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JP-2026075058-A - A pull-rod type curtain operating mechanism and a curtain to which it is applied.

JP2026075058AJP 2026075058 AJP2026075058 AJP 2026075058AJP-2026075058-A

Abstract

[Problem] To provide a pull-rod type curtain operating mechanism that can withstand large torsional forces while being miniaturized, and a curtain to which this mechanism is applied. [Solution] The pull-rod type curtain operating mechanism comprises a drive connector, a control lever, a lifting mechanism, a release mechanism, and an operating mechanism. The control lever comprises a fixed rod, a release rod, and a lifting operating member. The lifting mechanism comprises an annular rope wheel, a winding unit, and a driven member. When the lifting operating member extends relative to the release rod, the annular rope wheel and the driven member rotate synchronously in the positive rotational direction, causing the operating mechanism to transmit a torsional force to the roll bar and wind up the shielding material. When the release rod extends relative to the fixed rod, the driven member rotates the drive shaft of the operating mechanism in the negative rotational direction, releasing the engagement between the swing latch of the operating mechanism and the drive connector. At this time, the drive connector and the roll bar release the shielding material from the roll bar. [Selection Diagram] Figure 3

Inventors

  • 陳 琳
  • 楊 晶晶

Assignees

  • 億豊総合工業股▲分▼有限公司

Dates

Publication Date
20260507
Application Date
20250930
Priority Date
20241021

Claims (13)

  1. Applied to a curtain and used to operate the opening and closing of the curtain, the curtain is a pull-rod type curtain operating mechanism having a roll bar and a shielding material connected to the roll bar, The aforementioned pull-rod type curtain operating mechanism comprises a drive connector, a base, a control lever, a lifting mechanism, a lock release mechanism, and an operating mechanism. The drive connector is fixed to one end of the roll bar so that the roll bar can rotate together with the drive connector, and its inner wall surface has at least one first contact portion. The base is provided corresponding to the end of the roll bar, The control lever is provided below the base and comprises a fixed rod, a release rod, and a lifting/lowering operating member, wherein the fixed rod is fixed to the base, the release rod is extendable and retractable relative to the fixed rod by at least a portion of it extending from below the fixed rod, and the lifting/lowering operating member is extendable and retractable relative to the release rod by at least a portion of it extending from below the release rod. The lifting mechanism is located within the base and is configured to interlock with the lifting operation member of the control lever via a lifting cord. It comprises an annular rope wheel, a winding unit, and a driven member. The annular rope wheel is rotatable in the axial direction of the roll bar and has a plurality of second contact points on its inner circumferential surface. The winding unit is connected to the annular rope wheel and, when the force applied to the annular rope wheel is released, rotates the annular rope wheel to return it to its original position. The driven member has a plurality of teeth on its outer circumference, is located within the base coaxially with the annular rope wheel, and corresponds to each of the plurality of second contact points. The device comprises a plurality of elastic arms, one end of which the lifting cord is fixed to the annular rope wheel, and the other end extends from the base and is inserted into the control lever and fixed to the lifting operating member, and when the lifting operating member receives force and extends toward the unlocking rod, the lifting cord moves together with the lifting operating member and rotates the annular rope wheel in the positive rotation direction, and when the annular rope wheel rotates in the positive rotation direction, the plurality of elastic arms are each engaged with the plurality of second contact parts, thereby rotating the driven member in the positive rotation direction in synchronization with the annular rope wheel. The unlocking mechanism is disposed within the base and configured to interlock with the unlocking rod of the control lever via an unlocking cord, and includes a movable member, the movable member being movably disposed within the base and having a pressing portion, one end of the unlocking cord fixed to the movable member, the other end extending from the base and inserted into the control lever and fixed to the unlocking rod, and when the unlocking rod receives force and extends relative to the fixed rod, the unlocking cord moves together with the unlocking rod, thereby moving the movable member in a first direction, engaging the pressing portion of the movable member with a plurality of teeth provided on the outer circumference of the driven member, and rotating the driven member in a negative rotation direction opposite to the positive rotation direction. The operating mechanism is connected between the lifting mechanism and the drive connector and comprises a drive shaft and at least one swing latch, the drive shaft extending along the axial direction of the roll bar, one end of which is inserted into the drive connector and the other end of which is fixed to the driven member so that the drive shaft can rotate together with the driven member in the same direction, and at least one swing latch is swingably provided between the drive shaft and the drive connector. Eventually, the lifting operation member receives force and rotates the annular rope wheel, the driven member, and the drive shaft in the positive rotational direction, thereby engaging at least one of the swing latches with at least one of the first contact portions of the drive connector, transmitting a torsional force to the roll bar to wind up the shielding material. When the force applied to the lifting operation member is released, the winding unit rotates the annular rope wheel in the negative rotational direction. As the annular rope wheel rotates in the negative rotational direction, the multiple elastic arms of the driven member slide over the tops of the multiple second contact portions, and at this time, the annular rope wheel does not rotate together with the driven member. In this pull-rod type curtain operating mechanism, when the unlocking rod receives force and extends relative to the fixed rod and rotates the driven member in the negative rotational direction, the driven member rotates the drive shaft of the operating mechanism in sync with the negative rotational direction, thereby disengaging at least one of the swinging latches and preventing it from engaging with at least one of the first contact portions of the drive connector, at which point the drive connector and the roll bar rotate freely relative to the drive shaft under the weight of the shielding material, thereby enabling the shielding material to be deployed.
  2. The unlocking mechanism further comprises at least one return spring provided between the base and the movable member, wherein when the unlocking rod receives force and extends relative to the fixed rod and the unlocking cord moves the movable member in the first direction, at least one of the return springs elastically deforms, and thereafter, when the force applied to the unlocking rod is released, at least one of the return springs imparts return elasticity to the movable member, thereby returning the movable member to its original position. The pull-rod type curtain operating mechanism according to claim 1, wherein, during the return process, the pressing portion of the moving member slides over the tops of a plurality of teeth provided on the outer circumference of the driven member, and the moving member is configured not to rotate the driven member.
  3. The aforementioned moving member further comprises a main body and a pressing member, The pull-rod type curtain operating mechanism according to claim 2, wherein the main body has a groove and a locking edge, the pressing member has a fixed end and an engaging end therewith, the fixed end is provided in the groove of the main body, the engaging end is pivotable in a direction deviating from the fixed end after being subjected to force, but is restricted by the locking edge and cannot pivot in the direction opposite to the direction of deviation when subjected to force in a stationary state, and the pressing portion of the moving member is located at the engaging end of the pressing member.
  4. The pull-rod type curtain operating mechanism according to claim 2, wherein the pressing portion of the moving member is a rack structure, and the plurality of teeth of the rack structure are right-angled teeth.
  5. The base has a shaft column, and the unlocking cord extends from the end fixed to the moving member, then bypasses the arcuate surface of the shaft column, extends from the base, and is then inserted into the control lever and fixed to the unlocking rod, according to claim 1.
  6. The operating mechanism further comprises a sleeve, which is fitted onto the drive shaft and has an axial groove and at least one through groove. The drive shaft has a positioning rib that fits into the axial groove, and rotates the sleeve by contacting one of the groove walls on both sides of the axial groove depending on the different rotation directions of the drive shaft. The pull-rod type curtain operating mechanism according to claim 1, wherein at least one of the swing latches swivels to a retracted position where it does not extend out of the through groove, because the amount of rotation of the drive shaft when the drive shaft is rotated in the negative rotation direction by the driven member is greater than the amount of rotation of the sleeve, thereby disengaging from at least one of the first contacts of the drive connector and thus allowing the roll bar to spin freely relative to the sleeve of the operating mechanism and deploy the shielding material.
  7. The aforementioned operating mechanism further comprises a retaining spring, and the base comprises a cylinder structure having a locking wall. The retaining spring is fitted onto the sleeve, with one end abutting against the locking wall of the cylinder structure, and the other end inserted into the axial groove and in contact with the positioning rib of the drive shaft in a manner that it engages with the rib. The pull-rod type curtain operating mechanism according to claim 6, wherein at least one of the swinging latches engages with the first contact portion of the drive connector, and when the drive connector and the roll bar attempt to rotate in the negative rotational direction due to the weight of the shielding material, the retaining spring applies a restraining force to the roll bar.
  8. The winding unit comprises a spring storage wheel and a spiral spring, The spring storage wheel is rotatably fitted onto the spring storage support of the base and is connected to the annular rope wheel so as to rotate together with the annular rope wheel, one end of the spiral spring is fixed to the spring storage support of the base and the other end is fixed to the spring storage wheel, and the spiral spring is coiled with the spring storage support as its approximate axis. When the spring storage wheel rotates relative to the spring storage column, the spring storage wheel is tightened or loosened in accordance with the change in the direction of rotation of the spring storage wheel. In the pull-rod type curtain operating mechanism according to claim 1, when the lifting operating member receives force and extends toward the unlocking rod and rotates the annular rope wheel in the positive rotation direction, the annular rope wheel rotates the spring storage wheel in the energy storage direction, thereby gradually tightening the spiral spring, and when the force applied to the lifting operating member is released, the spring storage wheel rotates in the opposite direction to the energy storage direction under the action of the unwinding elasticity of the spiral spring, and rotates the annular rope wheel in the negative rotation direction, and the spiral spring is gradually loosened in the spring storage wheel.
  9. The driven member further comprises a main body and a plurality of support elastic sheets, The main body is configured such that each of the multiple elastic arms is elastically pivotable relative to the main body, and the multiple support elastic sheets are provided at positions corresponding to each of the multiple elastic arms, so that when the multiple elastic arms extend toward the multiple second contact portions and the annular rope wheel is rotated in the positive rotational direction, the multiple elastic arms are in contact with the multiple second contact portions in a manner that they are locked to each other. The pull-rod type curtain operating mechanism according to claim 1, wherein one end of each of the support elastic sheets is integrally connected to the corresponding elastic arm, and the other end is in contact with the main body.
  10. The driven member further comprises a main body and a plurality of support elastic sheets, The main body is configured such that each of the multiple elastic arms is elastically pivotable relative to the main body, and the multiple support elastic sheets are provided at positions corresponding to each of the multiple elastic arms, so that when the multiple elastic arms extend toward the multiple second contact portions and the annular rope wheel is rotated in the positive rotational direction, the multiple elastic arms are in contact with the multiple second contact portions in a manner that they are locked to each other. The pull-rod type curtain operating mechanism according to claim 1, wherein one end of each of the support elastic sheets is integrally connected to the main body, and the other end is in contact with the corresponding elastic arm.
  11. A curtain comprising a roll bar, a shielding material, and a pull-rod type curtain operating mechanism, The shielding material is configured such that one end is connected to the roll bar and it is rolled up or released by the roll bar. The aforementioned pull-rod type curtain operating mechanism is provided for operating the opening and closing of the curtain and comprises a drive connector, a base, a control lever, a lifting mechanism, a lock release mechanism, and an operating mechanism. The drive connector is fixed to one end of the roll bar so that the roll bar can rotate together with the drive connector, and its inner wall surface has at least one first contact portion. The base is provided corresponding to the end of the roll bar, The control lever is provided below the base and comprises a fixed rod, a release rod, and a lifting/lowering operating member, wherein the fixed rod is fixed to the base, the release rod is extendable and retractable relative to the fixed rod by at least a portion of it extending from below the fixed rod, and the lifting/lowering operating member is extendable and retractable relative to the release rod by at least a portion of it extending from below the release rod. The lifting mechanism is disposed within the base and configured to interlock with the lifting operating member of the control lever via a lifting cord, and comprises an annular rope wheel, a winding unit, and a driven member, the annular rope wheel being rotatable in the axial direction of the roll bar and having a plurality of second contact portions on its inner circumferential surface, the winding unit being connected to the annular rope wheel and, when the force applied to the annular rope wheel is released, rotates the annular rope wheel to return it to its original position, the driven member having a plurality of teeth on its outer circumference, being disposed within the base coaxially with the annular rope wheel, and comprising a plurality of elastic arms, each corresponding to a plurality of the plurality of second contact portions, one end of the lifting cord being fixed to the annular rope wheel, and the other end extending from the base and being inserted into the control lever and fixed to the lifting operating member, when the lifting operating member receives force and extends toward the unlocking rod, the lifting cord moves in accordance with the lifting operating member and rotates the annular rope wheel in the positive rotational direction. The unlocking mechanism is disposed within the base and configured to interlock with the unlocking rod of the control lever via an unlocking cord, and includes a movable member, the movable member being movably disposed within the base and having a pressing portion, one end of the unlocking cord fixed to the movable member, the other end extending from the base and inserted into the control lever and fixed to the unlocking rod, and when the unlocking rod receives force and extends relative to the fixed rod, the unlocking cord moves together with the unlocking rod, thereby moving the movable member in a first direction, engaging the pressing portion of the movable member with a plurality of teeth provided on the outer circumference of the driven member, and rotating the driven member in a negative rotation direction opposite to the positive rotation direction. The operating mechanism is connected between the lifting mechanism and the drive connector and comprises a drive shaft and at least one swing latch, the drive shaft extending along the axial direction of the roll bar, one end of which is inserted into the drive connector and the other end of which is fixed to the driven member so that the drive shaft can rotate together with the driven member in the same direction, and at least one swing latch is swingably provided between the drive shaft and the drive connector. When the lifting/lowering operating member receives force and extends toward the unlocking rod, causing the annular rope wheel to rotate in the positive rotation direction, the plurality of elastic arms of the driven member engage with the plurality of second contact portions provided on the inner circumferential surface of the annular rope wheel, thereby rotating the driven member in sync with the annular rope wheel in the positive rotation direction, and simultaneously rotating the drive shaft of the operating mechanism in sync with the positive rotation direction, engaging at least one of the swing latches with at least one of the first contact portions of the drive connector, thereby transmitting a torsional force to the roll bar to wind up the shielding material. When the force applied to the lifting/lowering operating member is released, the winding unit rotates the annular rope wheel in the negative rotation direction, and when the annular rope wheel rotates in the negative rotation direction, the plurality of elastic arms of the driven member slide over the tops of the plurality of second contact portions, and at this time the annular rope wheel does not rotate together with the driven member. In this curtain, when the unlocking rod receives force and extends relative to the fixed rod and rotates the driven member in the negative rotational direction, the driven member rotates the drive shaft of the operating mechanism in sync with the negative rotational direction, thereby disengaging at least one of the swinging latches and preventing engagement with at least one of the first contact portions of the drive connector, at which point the drive connector and the roll bar rotate freely relative to the drive shaft under the weight of the shielding material, thereby allowing the shielding material to be deployed.
  12. The unlocking mechanism further comprises at least one return spring provided between the base and the movable member, wherein when the unlocking rod receives force and extends relative to the fixed rod and the unlocking cord moves the movable member in the first direction, at least one of the return springs elastically deforms, and thereafter, when the force applied to the unlocking rod is released, at least one of the return springs imparts return elasticity to the movable member, thereby returning the movable member to its original position. The curtain according to claim 11, wherein, during the return process, the pressing portion of the moving member slides over the tops of a plurality of teeth provided on the outer circumference of the driven member, and the moving member is configured not to rotate the driven member.
  13. The aforementioned moving member further comprises a main body and a pressing member, The curtain according to claim 11, wherein the main body has a groove and a locking edge, the pressing member has a fixed end and an engaging end therewith, the fixed end is provided in the groove of the main body, the engaging end is pivotable in a direction deviating from the fixed end after being subjected to force, but is restricted by the locking edge from pivoting in the direction opposite to the direction of deviation, and the pressing portion of the movable member is located at the engaging end of the pressing member.

Description

This invention relates to a pull-rod type curtain operating mechanism and a curtain to which the same is applied, and more particularly to a pull-rod type curtain operating mechanism and a curtain to which the same is applied, which is compact, can withstand large torsional forces, has few constraints on appearance design, and can be applied to wide curtains. Curtains are often used in building openings such as windows and doors to regulate lighting and ensure privacy. Generally, curtains that allow for vertical adjustment of the blackout area can be divided into two types based on their operating mechanism: those with exposed operating cords and those without. Curtains with exposed operating cords use a circular, circulating control cord to control their deployment or retraction. The user can control the raising or lowering of the blackout portion of the curtain by pulling both sides of the control cord downwards. However, the circular control cord can become tangled or wrapped around other parts of the curtain, which can be inconvenient. Existing blinds have concealed operating cords, allowing the user to control the unfolding and folding of the curtain by operating the operating tube and a pull member at the bottom of the tube. When the curtain is folded, the user extends the operating tube to unfold the curtain downwards, and then repeatedly extends the hook member to fold the curtain upwards. However, such blinds suffer from a large upper beam mechanism that restricts the overall design of the curtain. Furthermore, the only means of stopping the movement is a retaining spring that tightens and locks a hollow sleeve to prevent rotation due to the weight of the louvers, limiting its resistance to torsional forces. Therefore, they are unsuitable for wide curtains with heavy blackout sections. Consequently, the market demands a pull-rod type curtain with a thinner, more compact operating mechanism that can resist greater torsional forces and offers fewer limitations on curtain width. This is a partially exploded perspective view showing one embodiment of a pull-rod type curtain operating mechanism and a curtain to which the same is applied according to the present invention.The curtain shown in Figure 1 is depicted with the shielding material and part of the upper beam omitted.Figure 1 is an exploded perspective view of a pull-rod type curtain operating mechanism.Figure 1 is an exploded perspective view showing the pull-rod type curtain operating mechanism from a different angle.Figure 1 is a top view of the pull-rod type curtain operating mechanism.This is a partial cross-sectional view taken along line A-A in Figure 5.This is a partial cross-sectional view along the line B-B in Figure 5.This is a partial cross-sectional view taken along line A-A in Figure 5.This is a schematic diagram illustrating the operation of the lifting mechanism of a pull-rod type curtain operating mechanism.This is a schematic cross-sectional view of a driven member of a pull-rod type curtain operating mechanism according to another embodiment of the present invention.This is a cross-sectional view along the line C-C in Figure 5.This is a cross-sectional view along line D-D in Figure 5.This is a partial cross-sectional view along the line E-E in Figure 5.This is a schematic diagram illustrating the operation of a pull-rod type curtain operating mechanism.Figure 1 is a magnified view of a pull-rod type curtain operating mechanism, with the first casing omitted.This is a schematic diagram illustrating the operation of the lock release mechanism for a pull-rod type curtain operating mechanism.Figure 15 is a perspective view showing the main body of the movable member of the lock release mechanism.This is a partially enlarged view of a pull-rod type curtain operating mechanism according to another embodiment of the present invention, with the first casing omitted. The technical content and features of the present invention will be described in detail below with reference to the drawings, with reference to several embodiments. Referring to Figures 1 and 2, in the first embodiment of the present invention, the pull-rod type curtain operating mechanism 100 is applied to a curtain 200. The curtain 200 has an upper beam 220, a roll bar 240, and a shielding material 260. The upper beam 220 is substantially rectangular in shape and houses the roll bar 240 inside. The roll bar 240 extends along an axis A1 and is rotatable about the axis A1 in a positive rotation direction D1 and in the opposite negative rotation direction D2. The curtain operating mechanism 100 is provided at one end of the roll bar 240. The upper beam 220 comprises two fixing brackets 222, two upper beam side covers 224, and one plate 226. Each fixing bracket 222 is substantially L-shaped, with its shorter side facing upward and fixed to the plate 226, and its longer side positioned perpendicular to the horizontal plane of the building and fixedly connected to the curtain o