CN-122008993-A - Ratchet wheel adjusting mechanism of vehicle-mounted movable table plate

Abstract

The invention provides a vehicle-mounted movable table ratchet wheel adjusting mechanism, which enables an operator to adjust the front and rear positions of a table according to use requirements, ensures that the whole table is reliably locked after the table is adjusted in place, and ensures that the position of the table is stable and reliable in the driving process. The device comprises two guide rails, wherein each guide rail comprises a middle guide cavity in the width direction and downward metal plate pressing strips at two sides in the width direction, and a locking gap is reserved between the downward metal plate pressing strip positioned at the outer side and the bottom of the guide rail; the horizontal connecting seat comprises a bottom plate and a cover cap, wherein the cover cap is arranged on the bottom plate to form a cavity area, a ratchet wheel locking mechanism and two groups of linear racks, locking blocks are arranged at the outer ends of the linear racks, and locking pressing teeth protruding downwards and protruding sideways are arranged at the lower parts of the locking blocks.

Inventors

• LIU KUI
• FANG QICAI

Assignees

• 昆山誉球模塑有限公司

Dates

Publication Date

20260512

Application Date

20251223

Claims (10)

1. 1. On-vehicle removal table ratchet adjustment mechanism, its characterized in that includes: Each guide rail comprises a middle guide cavity in the width direction and downward metal plate pressing strips at two sides in the width direction, and a locking gap is reserved between the downward metal plate pressing strip positioned at the outer side and the bottom of each guide rail; A table rod; a table plate; the horizontal connecting seat comprises a bottom plate and a cover cap, wherein the cover cap is arranged on the bottom plate in a covering manner to form a cavity area; A ratchet wheel; A ratchet locking mechanism; the outer end of each group of linear racks is provided with a locking block, and the lower part of the locking block is downwards convex and provided with a laterally convex locking pressing tooth; The two ends of the bottom plate in the length direction are respectively provided with a locking block guide groove, the bottom of the table rod is provided with a lower protruding block, the middle part of the length direction of the cover is provided with a penetrating positioning hole, the ratchet wheel is positioned in the cavity area, the bottom of the table rod penetrates through the positioning hole and is fixedly connected with the ratchet wheel, the table rod rotates to drive the ratchet wheel to rotate, the ratchet wheel locking mechanism is arranged at the side of the ratchet wheel and is positioned in the cavity area, two groups of linear racks are respectively arranged at the front and rear positions of the cavity area, racks of each group of linear racks are respectively meshed and connected with the ratchet wheel, the locking block of each group of linear racks penetrates through the locking block guide groove, and locking pressing teeth at the corresponding side are arranged towards the guide gap of the guide rail at the corresponding side; When the ratchet locking mechanism locks the ratchet, the locking pressing teeth are fixed relative to the guide gap, and when the ratchet locking mechanism does not lock the ratchet, the table rod rotates to drive the ratchet to rotate, so that the locking pressing teeth are inserted into the guide gap or far away from the guide gap.
2. 2. The ratchet wheel adjusting mechanism of the vehicle-mounted mobile table board of claim 1, wherein the ratchet wheel locking mechanism is used for performing three modes of operation of single right-handed operation, single left-handed operation and bidirectional locking operation on a ratchet wheel.
3. 3. The vehicle-mounted mobile table ratchet adjusting mechanism according to claim 2 is characterized in that in a single right-handed state, the table rod can only rotate in a right-handed mode to drive a ratchet wheel to rotate in a right-handed mode, in a single left-handed state, the table rod can only rotate in a left-handed mode to drive the ratchet wheel to rotate in a left-handed mode, and in a bidirectional locking state, the table rod cannot rotate to enable the ratchet wheel to be completely locked.
4. 4. The ratchet wheel adjusting mechanism of the vehicle-mounted mobile table plate according to claim 3, wherein the ratchet wheel locking mechanism comprises a locking base body, two groups of clamping leg mechanisms and a clamping leg driving switching mechanism, each group of clamping leg mechanisms comprises clamping legs and springs, the locking base body is a U-shaped block, the locking base body is arranged in the cavity area, U-shaped notches are arranged towards the ratchet wheel, and guide grooves for guiding the linear racks are formed between two sides of the U-shaped block of the locking base body and front and rear end walls of the cavity area.
5. 5. The mechanism of claim 4, wherein each set of clamping legs comprises a mounting end and a clamping leg end, the directions of the clamping leg ends of the two sets of clamping legs are different, and the clamping leg ends of each set of clamping legs are clamped on the gear teeth of the ratchet wheel and only enable the ratchet wheel to rotate unidirectionally.
6. 6. The ratchet wheel adjusting mechanism of the vehicle-mounted mobile table plate of claim 4, wherein the clamping foot driving switching mechanism comprises an adapter block, a driving knob and two limiting bouncing mechanisms, a torsion shaft avoiding hole and two bouncing avoiding holes are formed in the top of the cover, the rotating shaft end of the driving knob penetrates through the torsion shaft avoiding hole and then is fixedly connected with the adapter block, corresponding clamping feet are respectively arranged on two sides of the adapter block, the outer ends of the two groups of clamping feet are respectively pressed and attached to the corresponding periphery of the adapter block through springs, the telescopic columns of the two groups of limiting bouncing bar mechanisms are protruded outwards of the bouncing avoiding holes, and the driving end of the driving knob is located in an area between the two groups of telescopic columns in a bidirectional locking state.
7. 7. The ratchet adjustment mechanism for a vehicle mobile table as claimed in claim 6, wherein the adapter block is a cam block structure.
8. 8. The ratchet wheel adjusting mechanism for the vehicle-mounted mobile table plate of claim 1, wherein a lower convex table angle is respectively arranged on two sides of the length direction of the bottom plate.
9. 9. The ratchet wheel adjusting mechanism for a vehicle-mounted mobile table plate of claim 1, wherein a rotary supporting frame is arranged at the top of the table rod, a lower protruding rod of the rotary supporting frame is inserted into an inner cavity of the table rod, and the rotary output end of the rotary supporting foot is fixedly provided with the table plate.
10. 10. The ratchet wheel adjusting mechanism for a vehicle-mounted movable table board as claimed in claim 9, wherein the rotating support frame is provided with locking mechanisms corresponding to the rotating parts of the table rod and the table board respectively.

Description

Ratchet wheel adjusting mechanism of vehicle-mounted movable table plate Technical Field The invention relates to the technical field of vehicle-mounted desktops, in particular to a vehicle-mounted movable desktop ratchet wheel adjusting mechanism. Background In order to cope with some urgent work or entertainment demands handled on the vehicle, the on-board desk has been developed so that the space in the vehicle instantaneously becomes a high-efficiency office or recreational room. In long distance driving, the rear-row passengers can easily place notebook computers for video conferences or editing documents, or put electronic products on a desk plate for entertainment during rest. However, the existing vehicle-mounted table board is generally fixed in position, can only be adjusted and set in the overturning angle or the rotating angle, and cannot be adjusted in longitudinal position according to the front-rear position adaptation of a user in a carriage, because the space in the carriage is relatively small and the vehicle-mounted table board needs to be moved once, then, the stand column for supporting the table plate needs to be independently arranged, the guide rail needs to be arranged at the bottom of the stand column, and the emergency such as braking needs to be dealt with under the moving state of the vehicle, so that the table plate and the guide rail need to be reliably locked when the table plate does not need to be moved, and therefore, the existing front-back movement adjusting mechanism cannot be matched with the vehicle-mounted table plate for arrangement. Furthermore, it is highly desirable to develop an adjusting mechanism applicable to the vehicle-mounted mobile table to adjust the front and rear positions of the table, so as to ensure that the vehicle-mounted table can adjust the front and rear positions according to requirements. Disclosure of Invention Aiming at the problems, the invention provides the vehicle-mounted movable table ratchet adjusting mechanism, which enables an operator to adjust the front and rear positions of the table according to the use requirement, ensures that the whole table is reliably locked after the table is adjusted in place, and ensures that the position of the table is stable and reliable in the driving process. On-vehicle removal table ratchet adjustment mechanism, its characterized in that includes: Each guide rail comprises a middle guide cavity in the width direction and downward metal plate pressing strips at two sides in the width direction, and a locking gap is reserved between the downward metal plate pressing strip positioned at the outer side and the bottom of each guide rail; A table rod; a table plate; the horizontal connecting seat comprises a bottom plate and a cover cap, wherein the cover cap is arranged on the bottom plate in a covering manner to form a cavity area; A ratchet wheel; A ratchet locking mechanism; the outer end of each group of linear racks is provided with a locking block, and the lower part of the locking block is downwards convex and provided with a laterally convex locking pressing tooth; The two ends of the bottom plate in the length direction are respectively provided with a locking block guide groove, the bottom of the table rod is provided with a lower protruding block, the middle part of the length direction of the cover is provided with a penetrating positioning hole, the ratchet wheel is positioned in the cavity area, the bottom of the table rod penetrates through the positioning hole and is fixedly connected with the ratchet wheel, the table rod rotates to drive the ratchet wheel to rotate, the ratchet wheel locking mechanism is arranged at the side of the ratchet wheel and is positioned in the cavity area, two groups of linear racks are respectively arranged at the front and rear positions of the cavity area, racks of each group of linear racks are respectively meshed and connected with the ratchet wheel, the locking block of each group of linear racks penetrates through the locking block guide groove, and locking pressing teeth at the corresponding side are arranged towards the guide gap of the guide rail at the corresponding side; When the ratchet locking mechanism locks the ratchet, the locking pressing teeth are fixed relative to the guide gap, and when the ratchet locking mechanism does not lock the ratchet, the table rod rotates to drive the ratchet to rotate, so that the locking pressing teeth are inserted into the guide gap or far away from the guide gap. It is further characterized by: The ratchet locking mechanism is used for carrying out three modes of operation of single right-handed rotation, single left-handed rotation and bidirectional locking on the ratchet; in the single-right-rotation state, the table rod can only rotate right to drive the ratchet wheel to rotate right, in the single-left-rotation state, the table rod can only rotate left to drive the ratchet wheel to rotate left; The ratchet