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CN-224232132-U - Knob structure and medical equipment

CN224232132UCN 224232132 UCN224232132 UCN 224232132UCN-224232132-U

Abstract

The application discloses a knob structure and medical equipment, which relates to the technical field of medical equipment accessories, and is characterized in that a rotary shaft is rotatably arranged on a mounting frame, a first sleeve is sleeved on the rotary shaft, the first sleeve is connected with the mounting frame, a second sleeve is rotatably connected with the first sleeve around the axis of the rotary shaft, a containing cavity is formed between the first sleeve and the second sleeve, a damping medium is arranged in the containing cavity, a knob piece is connected with the rotary shaft and the second sleeve, can drive rotation axis and second sleeve and rotate around the axial lead of rotation axis in step to the second sleeve can do relative rotation with first sleeve, and damping medium can provide rotary resistance for the second sleeve this moment, thereby need exert certain effort just can rotate knob spare, can prevent to take place because of the condition of forceful excessively, leads to knob spare excessive rotation, makes rotatory knob spare can obtain better experience sense, and can reduce the mechanical abrasion of rotatory damping spare.

Inventors

  • FENG LIFENG

Assignees

  • 北京万东医疗科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250522

Claims (12)

  1. 1. A knob structure, comprising: A mounting frame; The rotating shaft is rotationally connected with the mounting frame around the axis of the rotating shaft; The rotary damping piece comprises a first sleeve and a second sleeve, the first sleeve is sleeved on the rotary shaft and is connected with the mounting frame, the second sleeve is rotationally connected with the first sleeve around the axial lead of the rotary shaft, a containing cavity is formed between the first sleeve and the second sleeve, and damping medium is arranged in the containing cavity; The knob piece is connected with the rotating shaft and the second sleeve, and the knob piece is rotated, so that the rotary damping piece provides rotary resistance for the knob piece when the rotating shaft and the second sleeve are driven to rotate around the axial lead of the rotating shaft.
  2. 2. The knob structure according to claim 1, wherein the first sleeve has a through hole, the rotation shaft is movably disposed through the through hole, and one end of the rotation shaft extends out of the through hole to be connected with the knob member.
  3. 3. The knob structure according to claim 1, wherein the first sleeve and the second sleeve are arranged in an extending direction of an axial line of the rotary shaft, one of the first sleeve and the second sleeve is provided with an annular groove, the other of the first sleeve and the second sleeve includes an annular projection inserted into the annular groove, and a gap between the annular projection and an inner peripheral side wall of the annular groove forms the accommodation chamber.
  4. 4. The knob structure according to claim 3, wherein the annular projection has a bottom surface which is opposite to and spaced apart from a bottom surface of the annular groove.
  5. 5. The knob structure according to claim 3, wherein the annular groove has a groove width a in a direction perpendicular to an axis of the rotation shaft, and the annular projection has a width b, and both a and b become gradually larger in a direction away from a groove bottom surface of the annular groove.
  6. 6. The knob structure according to claim 3, wherein the side wall of the rotary damper defining the annular groove is further formed with a receiving groove communicating with a notch end of the annular groove, the annular protrusions being sequentially inserted into the receiving groove and the annular groove; The rotary damping piece further comprises a sealing structure, wherein the sealing structure is arranged in the accommodating groove and extends around the annular protrusion for one circle to seal a gap between the notch end of the annular groove and the annular protrusion.
  7. 7. The knob structure according to claim 6, wherein one end of the annular protrusion away from the bottom surface of the annular groove is provided with a cover body, and the cover body is covered at the notch end of the annular groove and abuts against the sealing structure.
  8. 8. The knob structure according to claim 6, wherein the sealing structure comprises: The first sealing ring is arranged in the accommodating groove and sleeved on the annular protrusion; The second sealing ring is arranged in the accommodating groove, and is arranged with the first sealing ring at intervals along the direction perpendicular to the axial line of the rotating shaft, and the second sealing ring and the first sealing ring are respectively positioned on two opposite sides of the annular protrusion.
  9. 9. The knob structure according to claim 1, further comprising a connection member having a fitting groove and a connection hole communicating with the fitting groove, the rotation shaft extending into the fitting groove, the connection member extending into the fitting groove from the connection hole and being connected with the rotation shaft.
  10. 10. The knob structure according to claim 1, wherein the knob member has an assembling groove, an inner wall surface of the assembling groove is provided with at least one of a convex portion and a concave portion, an outer peripheral surface of the second sleeve is provided with at least the other of the convex portion and the concave portion, the second sleeve is provided in the assembling groove, and the convex portion is engaged with the concave portion.
  11. 11. The knob structure according to claim 1, wherein an end surface of the first sleeve facing the mounting bracket has at least one of a mounting portion and a mounting groove, and a side surface of the mounting bracket facing the first sleeve has at least the other of the mounting portion and the mounting groove, the mounting portion being in plug-fit with the mounting groove.
  12. 12. A medical device comprising a device body and a knob structure according to any one of claims 1-11, said mounting bracket being connected to said device body.

Description

Knob structure and medical equipment Technical Field The application relates to the technical field of medical equipment accessories, in particular to a knob structure and medical equipment. Background In the related art, the operation design of a medical device often employs a knob as a component for parameter adjustment, specifically, a user manually rotates the knob to drive a potentiometer or encoder (collectively referred to herein as "potentiometer" for convenience of description) connected thereto to rotate synchronously. The potentiometer converts mechanical displacement into electric signals in the rotation process and outputs the electric signals, so that the accurate adjustment and motion control of the operation parameters of the medical equipment are realized. However, because the rotation response of the potentiometer rotating shaft is too sensitive, when a user manually operates, once the force is applied improperly (such as with excessive force), the problem of excessive rotation of the knob is easily caused, the operation hand feeling is poor, and the user experience is poor. Disclosure of utility model The embodiment of the application provides a knob structure and medical equipment, which can solve the technical problem that a potentiometer is easy to rotate excessively. In a first aspect, embodiments of the present application provide a knob structure, comprising: A mounting frame; The rotating shaft is rotationally connected with the mounting frame around the axis of the rotating shaft; The rotary damping piece comprises a first sleeve and a second sleeve, the first sleeve is sleeved on the rotary shaft and is connected with the mounting frame, the second sleeve is rotationally connected with the first sleeve around the axial lead of the rotary shaft, a containing cavity is formed between the first sleeve and the second sleeve, and damping medium is arranged in the containing cavity; The knob piece is connected with the rotating shaft and the second sleeve, and the knob piece is rotated, so that the rotary damping piece provides rotary resistance for the knob piece when the rotating shaft and the second sleeve are driven to rotate around the axial lead of the rotating shaft. In some embodiments, the first sleeve has a through hole, the rotating shaft movably penetrates through the through hole, and one end of the rotating shaft extends out of the through hole to be connected with the knob. In some embodiments, the first sleeve and the second sleeve are arranged along an extending direction of an axial line of the rotating shaft, one of the first sleeve and the second sleeve is provided with an annular groove, the other of the first sleeve and the second sleeve includes an annular protrusion inserted into the annular groove, and a gap between the annular protrusion and an inner peripheral side wall of the annular groove forms the accommodation chamber. In some of these embodiments, the annular projection has a bottom surface that is opposite and spaced apart from a bottom surface of the annular recess. In some embodiments, the groove width of the annular groove is a, and the width of the annular protrusion is b, wherein a and b are gradually increased in a direction away from the groove bottom surface of the annular groove along a direction perpendicular to the axis of the rotation shaft. In some embodiments, the side wall of the rotary damping member defining the annular groove is further formed with a receiving groove, the receiving groove is communicated with the notch end of the annular groove, and the annular protrusions are sequentially inserted into the receiving groove and the annular groove; The rotary damping piece further comprises a sealing structure, wherein the sealing structure is arranged in the accommodating groove and extends around the annular protrusion for one circle to seal a gap between the notch end of the annular groove and the annular protrusion. In some embodiments, a cover body is arranged at one end of the annular protrusion, which is far away from the groove bottom surface of the annular groove, and the cover body covers the notch end of the annular groove and is abutted with the sealing structure. In some of these embodiments, the sealing structure comprises: The first sealing ring is arranged in the accommodating groove and sleeved on the annular protrusion; The second sealing ring is arranged in the accommodating groove, and is arranged with the first sealing ring at intervals along the direction perpendicular to the axial line of the rotating shaft, and the second sealing ring and the first sealing ring are respectively positioned on two opposite sides of the annular protrusion. In some embodiments, the knob structure further includes a connection member having a fitting groove and a connection hole communicating with the fitting groove, the rotation shaft extending into the fitting groove, the connection member extending from the connection hole into th