Double-gear adjusting mechanism for middle armrest of seat

Abstract

The utility model belongs to the technical field of seats, and particularly relates to a seat middle armrest double-gear adjusting mechanism which comprises a rotating shaft capable of being arranged on a seat backrest and a seat armrest capable of rotating around the rotating shaft, and a support hinged to the rotating shaft and capable of being fixed to the seat backrest is arranged on one side of the rear portion of the seat armrest. A limiting plate is hinged to the portion, close to the rotating shaft, of the support, a locking plate is hinged to the outer side of the limiting plate, the support is connected with an elastic piece which enables the limiting plate to rotate and apply force in the anticlockwise direction all the time, and the other end of the locking plate is connected with an unlocking assembly and a reset spring. The reset spring drives the locking plate to rotate anticlockwise so that the locking teeth on the locking plate can be clamped to the locking grooves in the limiting plate to limit anticlockwise rotation of the seat armrest, and the seat armrest adjusting mechanism has the advantages that two-gear adjustment is achieved, after the backrest is adjusted backwards, the seat armrest can still be horizontally placed, and placed water cups / beverages and other objects are stable and do not scatter; arms placed on the handrails are comfortable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of seat, especially relates to a seat middle handrail double-gear adjusting mechanism. BACKGROUND

[0002] At present, the middle armrest of the rear seat has only one opening position gear, cannot be adjusted twice, and has no locking device, resulting in inconvenience in some occasions. SUMMARY

[0003] The utility model discloses a seat middle armrest double-gear adjusting mechanism, when the backrest is adjusted to the second gear, the armrest can also be adjusted to keep the corresponding horizontal state, so that the comfort of the armrest support under different backrest angles is realized.

[0004] The utility model discloses a seat middle armrest double-gear adjusting mechanism, when the backrest is adjusted to the second gear, the armrest can also be adjusted to keep the corresponding horizontal state, so that the comfort of the armrest support under different backrest angles is realized.

[0005] A seat middle armrest double-gear adjusting mechanism, including the pivot that can be set on the seat backrest and the seat armrest that rotates around pivot, the side of seat armrest rear portion is provided with the support that is hinged on pivot and can be fixed on seat backrest, the support on pivot is hinged with the limiting plate, the outside of limiting plate is hinged with the locking plate, the support is connected with the elastic member that always rotates limiting plate to the counterclockwise direction and exerts force, the other end of locking plate is provided with the unlocking assembly and the return spring, the return spring promotes the counterclockwise rotation of locking plate to make the lock tooth on locking plate be connected on the lock slot on limiting plate, to limit the counterclockwise rotation of seat armrest.

[0006] As a further optimization of the above technical solution, the elastic member is a tension spring or a torsion spring.

[0007] As a further optimization of the above technical solution, the limiting plate is a first strip-shaped plate, one end of the first strip-shaped plate is hinged on the support, and the other end of the first strip-shaped plate is provided with the lock slot.

[0008] As a further optimization of the above technical solution, the lock slot is a triangular-shaped slot, which includes a straight side and an arc-shaped side recessed towards the hinge shaft side of the limiting plate.

[0009] As a further optimization of the above technical solution, the locking plate is a second strip-shaped plate arranged vertically, the upper end of the second strip-shaped plate is hinged on the support, the lower end of the second strip-shaped plate is connected with the unlocking assembly, and the middle part of the side of the second strip-shaped plate facing the limiting plate is provided with the lock tooth that can be connected on the lock slot of the limiting plate.

[0010] As a further optimization of the above technical solutions, the lock tooth is a triangular-shaped protrusion, the triangular-shaped protrusion has a straight side and an arc-shaped side protruding outward, and the triangular-shaped protrusion is matched with the lock slot on the limiting plate.

[0011] As a further optimization of the above technical solutions, the unlocking assembly comprises a spring seat arranged at the tail of the bracket, the lower end of the locking plate is connected with a guide rod, the guide rod extends out of the seat armrest through the spring seat and is connected with an unlocking pull belt, and the reset spring is sleeved on the guide rod between the spring seat and the locking plate.

[0012] As a further optimization of the above technical solutions, the rear part of the seat armrest is provided with a trapezoidal slot capable of accommodating the bracket and preventing the bracket from interfering with the seat armrest during rotation, the bracket is a trapezoidal body, and the trapezoidal body has a movable gap of the seat armrest with the front side wall of the trapezoidal slot.

[0013] As a further optimization of the above technical solutions, an arc-shaped hole is arranged on the bracket between the hinge shaft of the locking plate and the limiting plate, a limiting column is arranged on the seat armrest and extends into the arc-shaped hole, and the limiting column rotates along the arc-shaped hole to support or drive the limiting plate when the seat armrest rotates around the rotating shaft.

[0014] The positive effects of the present application compared with the prior art are as follows:

[0015] When the backrest is located at the first gear position slightly inclined backward, the limiting plate is locked with the locking plate under the action of the reset spring, and the armrest remains in a horizontal state; when the backrest is adjusted to the second gear position backward, the unlocking pull belt is pulled to drive the locking plate to rotate, the locking plate is unlocked with the limiting plate, the limiting column of the armrest drives the limiting plate to rotate to the end of the arc-shaped hole on the bracket, and the armrest remains in a horizontal state, so that the armrest is comfortable when arms are placed thereon, and the stability of the cup / beverage and other articles placed on the armrest is not affected; the problem that the armrest is tilted and the arms placed thereon are not comfortable and the cup / beverage is spilled due to the inclination when the backrest is placed at the second gear position is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of the present application at the first gear position.

[0017] Figure 2 is Figure 1 an enlarged view of A of the present application.

[0018] Figure 3 is a perspective view of the present application at the first gear position.

[0019] Figure 4 is Figure 3An enlarged view of B in FIG. 1. DETAILED DESCRIPTION

[0020] The utility model will be further described in conjunction with the specific embodiments of the drawings, referring to Figures 1-4 :

[0021] A double-gear adjusting mechanism for a seat armrest in the middle, comprising a rotating shaft 13 arranged on a seat backrest 11 and a seat armrest 10 rotating around the rotating shaft 13, one side of the rear part of the seat armrest 10 is provided with a bracket 20 hinged on the rotating shaft 13 and fixable on the seat backrest 11, a limiting plate 21 is hinged on the bracket 20 close to the rotating shaft 13, a locking plate 24 is hinged on the outside of the limiting plate 21, an elastic member 32 is connected on the bracket 20, which always exerts a force on the limiting plate 21 to rotate it counterclockwise, the other end of the locking plate 24 is provided with an unlocking assembly 26 and a return spring 29, the return spring 29 promotes the counterclockwise rotation of the locking plate 24 so that the locking teeth 23 on the locking plate 24 are clamped on the locking groove 22 on the limiting plate 21 to limit the counterclockwise rotation of the seat armrest 10.

[0022] As a further optimization of the above technical solution, the elastic member 32 is a tension spring or a torsion spring.

[0023] As a further optimization of the above technical solution, the limiting plate 21 is a first strip-shaped plate, one end of the first strip-shaped plate is hinged on the bracket 20, and the other end of the first strip-shaped plate is provided with the locking groove 22.

[0024] As a further optimization of the above technical solution, the locking groove 22 is a quasi-triangle groove, which comprises a straight side and an arc-shaped side recessed to the hinged shaft side of the limiting plate 21.

[0025] As a further optimization of the above technical solution, the locking plate 24 is a second strip-shaped plate arranged vertically, the upper end of the second strip-shaped plate is hinged on the bracket 20, the lower end of the second strip-shaped plate is connected with the unlocking assembly 26, and the middle part of the side of the second strip-shaped plate facing the limiting plate 21 is provided with the locking teeth 23 clamped on the locking groove 22 on the limiting plate 21.

[0026] As a further optimization of the above technical solution, the locking teeth 23 are quasi-triangle protrusions, which have a straight side and an arc-shaped side protruding outward, and the triangle protrusions are matched with the locking groove 22 on the limiting plate 21.

[0027] As further optimization of the above technical solutions, the unlocking assembly 26 comprises a spring seat 27 arranged at the tail of the bracket 20, the lower end of the locking plate 24 is connected with a guide rod 28, the guide rod 28 extends out of the seat armrest through the spring seat 27 and is connected with an unlocking pull belt 25, the reset spring 29 is sleeved on the guide rod 28 between the spring seat 27 and the locking plate 24.

[0028] As further optimization of the above technical solutions, the rear part of the seat armrest 10 is provided with a trapezoidal slot 12 capable of accommodating the bracket 20 and the seat armrest 10 to rotate without interfering with the bracket 20, the bracket 20 is a trapezoidal body, and the trapezoidal body and the front side wall of the trapezoidal slot 12 have a movable gap of the seat armrest 10.

[0029] As further optimization of the above technical solutions, the bracket 20 between the hinge shaft of the locking plate 24 and the limiting plate 21 is provided with an arc-shaped hole 31, the seat armrest 10 is provided with a limiting column 30 extending into the arc-shaped hole 31, and when the seat armrest 10 rotates around the rotating shaft 13, the limiting column 30 rotates along the arc-shaped hole 31 to support or drive the limiting plate 21.

[0030] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still make simple replacements or modifications to the technical solutions or technical features recorded in the foregoing embodiments by similar technologies, and these simple replacements or modifications do not make the essence of the corresponding technical solutions deviate from the spirit and essence of the technical solutions of the embodiments of the present application, and still fall within the protection scope of the present application.

Claims

1. A dual-position adjustment mechanism for a seat's center armrest, comprising a pivot that can be disposed on the seat back and a seat armrest that rotates around the pivot, characterized in that: A bracket is provided on one side of the rear of the seat armrest, which is hinged to the pivot and can be fixed to the seat back. A limit plate is hinged to the bracket near the pivot. A locking plate is hinged to the outer side of the limit plate. An elastic element is connected to the bracket, which always applies force to rotate the limit plate counterclockwise. The other end of the locking plate is connected to an unlocking component and a return spring. The return spring causes the locking plate to rotate counterclockwise so that the locking teeth on the locking plate engage with the locking grooves on the limit plate, thereby restricting the counterclockwise rotation of the seat armrest.

2. The dual-position adjustment mechanism for the center armrest of a seat according to claim 1, characterized in that: The elastic element is a tension spring or a torsion spring.

3. The dual-position adjustment mechanism for the center armrest of a seat according to claim 1, characterized in that: The limiting plate is a first strip plate, one end of which is hinged to the bracket, and the other end of which is provided with the locking groove.

4. The dual-position adjustment mechanism for the center armrest of a seat according to claim 3, characterized in that: The locking groove is a triangular groove, which includes a straight side and an arc-shaped side that is concave towards the hinge axis of the limiting plate.

5. The dual-position adjustment mechanism for the center armrest of a seat according to claim 1, characterized in that: The locking plate is a vertically arranged second strip plate. The upper end of the second strip plate is hinged to the bracket, and the lower end of the second strip plate is connected to the unlocking component. The middle part of the side of the second strip plate facing the limiting plate is provided with locking teeth that can be engaged with the locking groove on the limiting plate.

6. The dual-position adjustment mechanism for the center armrest of a seat according to claim 5, characterized in that: The locking teeth are triangular protrusions, each having a straight side and an outwardly protruding arc-shaped side, and the triangular protrusions match the locking grooves on the limiting plate.

7. The dual-position adjustment mechanism for the center armrest of a seat according to claim 1, characterized in that: The unlocking assembly includes a spring seat located at the rear of the bracket, a guide rod connected to the lower end of the locking plate, the guide rod extending beyond the seat armrest through the spring seat and connected to an unlocking pull strap, and a reset spring fitted on the guide rod between the spring seat and the locking plate.

8. The dual-position adjustment mechanism for the center armrest of a seat according to claim 1, characterized in that: The rear of the seat armrest is provided with a trapezoidal groove that can accommodate the bracket and prevent the seat armrest from interfering with the bracket when rotating. The bracket is a trapezoidal body, and the front side wall of the trapezoidal body and the trapezoidal groove have an movable gap for the seat armrest.

9. The dual-position adjustment mechanism for the center armrest of a seat according to claim 1, characterized in that: An arc-shaped hole is provided on the bracket between the hinge shaft of the locking plate and the limiting plate, and a limiting post is provided on the seat armrest that extends into the arc-shaped hole. When the seat armrest rotates around the pivot, the limiting post rotates along the arc-shaped hole to support or drive the limiting plate.

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