Seat headrest adjusting mechanism

Abstract

The utility model discloses a seat headrest adjusting mechanism, which comprises a seat main body, an unlocking handle and a headrest moving plate, the headrest moving plate is arranged on the seat main body, the unlocking handle is arranged between the seat main body and the headrest moving plate, and the unlocking handle is arranged on the lower surface of the headrest moving plate through a clamping unit. A tooth-shaped groove is formed in the seat body, an elastic protrusion matched with the tooth-shaped groove is arranged on the headrest moving plate, and the elastic protrusion deforms inwards and is separated from the tooth-shaped groove through movement of the unlocking handle, so that height adjustment of the headrest moving plate is achieved. When the seat headrest is adjusted, the unlocking handle returns to the original position through the reset spring, at the moment, the bottom of the unlocking handle abuts against the corresponding elastic protrusion part on the headrest moving plate, the elastic protrusion on the headrest moving plate cannot deform, the headrest moving plate can be fixed in the corresponding tooth-shaped groove of the seat body, the structure is optimized, the seat headrest adjusting function is achieved, the structure is simple, and cost is lower.

Description

Technical Field

[0001] The utility model relates specifically to a seat headrest adjustment mechanism. Background Art

[0002] The seat belts in cars are designed according to adult standards. If used for babies, the seat belts will get stuck on the baby's neck, which will cause greater harm to the baby in the event of an accident. For this reason, there is a child seat that is specially designed for babies and can be used in various ways.

[0003] The existing child safety seat headrest structure and operation are relatively complex and costly. Utility Model Content

[0004] The purpose of the utility model is to provide a seat headrest adjustment mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seat headrest adjustment mechanism, comprising a seat body, a release handle and a headrest movable plate, the headrest movable plate being arranged on the seat body, the release handle being arranged between the seat body and the headrest movable plate, and the release handle being installed on the lower surface of the headrest movable plate through a positioning unit, a toothed groove being provided in the seat body, and an elastic protrusion being matched with the toothed groove being provided on the headrest movable plate, the elastic protrusion being deformed inwardly and disengaged from the toothed groove by moving the release handle, thereby realizing the height adjustment of the headrest movable plate.

[0006] Preferably, the locking unit includes a locking slot formed on the surface of the headrest movable plate and a locking column provided on the unlocking handle and adapted to the locking slot.

[0007] Preferably, the lock release handle is provided with a boss, and the boss has an end point with a return spring disposed upward.

[0008] Preferably, a baffle connected to a return spring is provided on the side of the headrest movable plate facing the unlocking handle.

[0009] Preferably, both sides of the surface of the headrest movable plate are provided with sliding grooves, and the lock release handle is provided with a sliding column, the sliding column extends into the sliding groove, and two sliding columns are provided.

[0010] Preferably, the movement trajectory of the unlocking handle is arc-shaped.

[0011] The technical effects and advantages of the utility model are as follows: the seat headrest adjustment mechanism is realized by pulling the unlocking handle, at which time the unlocking handle moves upward, and the elastic protrusion at the bottom of the headrest movable plate is squeezed by the corresponding toothed groove on the seat body, and can be deformed inwardly and disengaged from the toothed groove, thereby realizing the height adjustment of the headrest movable plate; when the unlocking handle is released, the unlocking handle returns to its original position through the reset spring, and at this time the bottom of the unlocking handle hits the corresponding elastic protrusion on the headrest movable plate, and the elastic protrusion on the headrest movable plate cannot be deformed, and the headrest movable plate can be fixed in the corresponding toothed groove of the seat body, and the seat headrest adjustment function is realized by optimizing the structure, with a simple structure and lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the headrest movable plate of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the return spring of the utility model;

[0015] Figure 4 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0016] Figure 5 It is a schematic diagram of the back structure of the unlocking handle of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the back side of the headrest movable plate of the utility model;

[0018] Figure 7 It is a structural schematic diagram of the back side of the headrest movable plate and the unlocking handle connected to each other in the present utility model.

[0019] In the figure: 1. seat body; 2. release handle; 3. headrest movable plate; 4. toothed groove; 5. elastic protrusion; 6. boss; 7. return spring; 8. baffle; 9. slide groove; 10. slide column. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] In order to facilitate the adjustment of the headrest movable plate 3, refer to Figure 1-Figure 7As shown, it includes a seat body 1, a lock release handle 2 and a headrest movable plate 3, the headrest movable plate 3 is arranged on the seat body 1, the lock release handle 2 is arranged between the seat body 1 and the headrest movable plate 3, and the lock release handle 2 is installed on the lower surface of the headrest movable plate 3 through a clamping unit, a toothed groove 4 is opened in the seat body 1, and an elastic protrusion 5 matched with the toothed groove 4 is arranged on the headrest movable plate 3. The elastic protrusion 5 is deformed inwardly and disengaged from the toothed groove 4 by moving the lock release handle, so that the height adjustment of the headrest movable plate 3 is achieved, the seat body 1 and the headrest movable plate 3 have toothed grooves 4 at the corresponding matching parts, the headrest movable plate 3 has an elastic protrusion 5 at the matching part of the corresponding toothed groove 4, the lock release handle 2 and the reset spring 7, the lock release handle 2 is fixed together with the headrest movable plate 3 by screws through a clamping position or a BOSS column, and then fixed through the corresponding clamping groove on the seat body 1 by the clamping position or screws on the headrest movable plate 3.

[0022] In order to adjust the height of the headrest movable plate 3, refer to Figure 1-Figure 7 As shown, the locking unit includes a slot provided on the surface of the headrest movable plate 3 and a locking column provided on the unlocking handle 2 and adapted to the slot. By inserting the locking column into the slot, the unlocking handle 2 and the headrest movable plate 3 can be fixed together. The unlocking handle 2 is provided with a protrusion 6, and the end of the protrusion 6 is provided with a return spring 7 upward. When the unlocking handle 2 is released, the unlocking handle 2 returns to its original position through the return spring 7. At this time, the bottom of the unlocking handle 2 hits the corresponding elastic protrusion 5 on the headrest movable plate 3, and the elastic protrusion 5 on the headrest movable plate 3 cannot be deformed. The headrest movable plate 3 is provided with a baffle 8 connected to the return spring 7 on the side facing the unlocking handle 2. When the return spring 7 is deformed, the movement of the headrest movable plate 3 is driven by the baffle 8. Slide grooves 9 are provided on both sides of the surface of the headrest movable plate 3, and a slide column 10 is provided on the unlocking handle 2, and the slide column 10 extends into the slide groove 9, and two slide columns 10 are provided. When the slide column 10 slides in the slide groove 9 and slides to the end of the slide groove 9, the headrest movable plate 3 can be driven to move by the unlocking handle 2. The moving track of the unlocking handle 2 is arc-shaped.

[0023] When in use, if the headrest movable plate 3 needs to be adjusted, the release handle 2 is pulled. At this time, the release handle 2 moves upward, and the elastic protrusion 5 at the bottom of the headrest movable plate 3 is squeezed by the corresponding toothed groove 4 on the seat body 1, and can be deformed inward and disengaged from the toothed groove 4, thereby realizing the height adjustment of the headrest movable plate 3. When the release handle 2 is released, the release handle 2 returns to its original position through the return spring 7. At this time, the bottom of the release handle 2 hits the corresponding elastic protrusion 5 on the headrest movable plate 3, and the elastic protrusion 5 on the headrest movable plate 3 cannot be deformed, so the headrest movable plate 3 can be fixed in the corresponding toothed groove 4 of the seat body 1.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention.

Claims

1. A seat headrest adjustment mechanism, characterized in that: The invention comprises a seat body (1), a lock release handle (2) and a headrest movable plate (3), wherein the headrest movable plate (3) is arranged on the seat body (1), the lock release handle (2) is arranged between the seat body (1) and the headrest movable plate (3), and the lock release handle (2) is installed on the lower surface of the headrest movable plate (3) through a locking unit, a tooth-shaped groove (4) is provided in the seat body (1), and an elastic protrusion (5) matched with the tooth-shaped groove (4) is provided on the headrest movable plate (3), and the elastic protrusion (5) is deformed inwardly and disengaged from the tooth-shaped groove (4) by moving the lock release handle, thereby realizing the height adjustment of the headrest movable plate (3).

2. A seat headrest adjustment mechanism according to claim 1, characterized in that: The locking unit comprises a locking slot formed on the surface of the headrest movable plate (3) and a locking column arranged on the unlocking handle (2) and adapted to the locking slot.

3. A seat headrest adjustment mechanism according to claim 1, characterized in that: The lock release handle (2) is provided with a boss (6), and the boss (6) has an end point with a return spring (7) facing upward.

4. A seat headrest adjustment mechanism according to claim 3, characterized in that: A baffle (8) connected to a return spring (7) is provided on the side of the headrest movable plate (3) facing the lock release handle (2).

5. The seat headrest adjustment mechanism according to claim 1, characterized in that: Slide grooves (9) are provided on both sides of the surface of the headrest movable plate (3), and a slide column (10) is provided on the lock release handle (2). The slide column (10) extends into the slide groove (9), and two slide columns (10) are provided.

6. The seat headrest adjustment mechanism according to claim 1, characterized in that: The moving track of the lock release handle (2) is arc-shaped.

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