Bidirectional headrest mechanism with middle unlocking function

Abstract

An unlocking base is fixed above a base metal plate, both the unlocking base and the base metal plate are provided with installation holes for a headrest insertion rod to penetrate through, the two sides of the headrest insertion rod are inserted into the installation holes, two unlocking push plates are arranged on the unlocking base in a sliding mode in the Y direction, locking pins are arranged on the two unlocking push plates, and the locking pins are connected with the unlocking base. The two locking pins are clamped in notches in the two sides of the headrest insertion rod, the inner ends of the two unlocking push plates are arranged in an inclined plane mode, return springs are arranged between the outer ends of the two unlocking push plates and the unlocking base, a button push block is connected between the two unlocking push plates in a contact mode, and a push block sliding groove is formed in the unlocking base. The button push block is arranged in the push block sliding groove in a sliding mode, a return spring is arranged between the button push block and the unlocking base, the button push block is connected with an unlocking button, the button push block can be driven to slide by pressing the unlocking button, therefore, the two unlocking push plates are extruded to slide outwards, and then unlocking of the headrest insertion rod is achieved. The headrest is simple in structure and convenient to operate, and unlocking of the two sides of the headrest insertion rod can be achieved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a two-way headrest mechanism with a middle unlocking function. Background Art

[0002] At present, with the rapid development of the national economy, people's living standards are constantly improving, and the pursuit of a comfortable and fast life has made cars increasingly popular. People who pursue a high-quality life are more looking forward to the humanized and convenient design of car functions. As the component that passengers most often touch in a car, car seats directly affect the passengers' riding comfort. The seat headrest provides passengers with good head support. Different passengers have different requirements for the height of the headrest at different times, so the height adjustment function of the headrest is often used. However, the existing two-way headrests for seats have the following defects: the unlocking component is relatively complicated to install, and the stability is poor during subsequent use. The space required for the unlocking process is large, and usually only one side of the headrest rod can be unlocked, which makes the headrest inflexible. Utility Model Content

[0003] In response to the problems existing in the above-mentioned prior art, the present invention aims to provide a two-way headrest mechanism with central unlocking, so as to solve the problems that the unlocking components of the existing headrest mechanism are complex in structure and difficult to achieve bilateral unlocking.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a two-way headrest mechanism of middle unlocking, including a headrest plug rod, a plurality of slots are provided on both sides of the headrest plug rod, an unlocking base and a base sheet metal, the unlocking base is fixed above the base sheet metal, both of which are provided with mounting holes for the headrest plug rod to pass through, the two sides of the headrest plug rod are inserted into the mounting holes, and two unlocking push plates are provided on the unlocking base for sliding along the Y direction, the two unlocking push plates are symmetrically arranged on the left and right, and locking pins are provided on the two unlocking push plates, which are one by one clamped to the corresponding heights on both sides of the headrest plug rod. When the locking cam is in the unlocked position, the button push block is moved in a direction of rotation relative to the unlocking base so that the locking cam can be moved in a direction opposite to the unlocking base, thereby releasing the locking cam and releasing the locking cam.

[0005] In the above scheme: the inner ends of the two unlocking push plates are arranged obliquely inward from front to rear, the push block slide groove is arranged obliquely downward from front to rear, and the two ends of the button push block are arranged with inclined surfaces matching the inner ends of the unlocking push plates. Pressing the unlocking button can drive the button push block to slide obliquely downward along the push block slide groove, so that the two ends of the button push block can move backward relative to the unlocking push plate, thereby squeezing the two unlocking push plates, and then causing the two unlocking push plates to slide outward respectively to separate the locking pin from the notch, and finally unlocking the headrest rod.

[0006] In the above scheme: the unlocking push plate is provided with a through hole for the corresponding side of the headrest insertion rod to pass through, and a margin is left between the through hole and the headrest insertion rod for the unlocking push plate to move outward. The locking pin is arranged in the through hole and is clamped inwardly in the groove on the corresponding side. The structure is simple and the design is ingenious.

[0007] In the above solution, the locking pin and the corresponding unlocking push plate are integrally injection-molded, which is convenient to process and has good quality stability.

[0008] In the above scheme: a button cover is fixedly provided on the unlocking base above the middle part of the button push block, the unlocking button is embedded in the button cover, and when the unlocking button is pressed, it can push the button push block to slide along the push block slide groove, which has a simple structure and is easy to operate.

[0009] The beneficial effects of the utility model are:

[0010] Pressing the unlock button can drive the button push block to slide along the push block slot, thereby squeezing the two unlock push plates, causing the two unlock push plates to slide outward to separate the locking pins from the notches, thereby unlocking the headrest rod. When the headrest height is adjusted to an appropriate position and the pressing force applied to the unlock button is removed, the unlock button can return to its original position under the action of its own return spring, the button push block can return to its original position under the action of the return spring, and the two unlock push plates can also return to their original position under the action of the return spring, so that the two locking pins are respectively engaged in the notches on both sides of the headrest rod, thereby locking the headrest rod. In short, the utility model has a simple structure, and the unlock button is arranged in the middle of the headrest mechanism, which has a good appearance consistency. A single press can unlock both sides of the headrest rod, making it easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 This is a schematic diagram of the headrest rod.

[0014] Figure 3This is the assembly diagram of the unlocking base and the base sheet metal.

[0015] Figure 4 This is a schematic diagram of the assembly of the unlock button on the button cover.

[0016] Figure 5 This is a diagram of the installation of the headrest bushing.

[0017] Figure 6 It is a structural diagram of two unlocking push plates and a button push block.

[0018] Figure 7 It is a structural diagram of the push block chute. DETAILED DESCRIPTION

[0019] like Figure 1 As shown in FIG. 7 , a two-way headrest mechanism with a middle unlocking function is mainly composed of a headrest rod 1, an unlocking base 4 and a base sheet metal 5. A plurality of notches are provided on both sides of the headrest rod 1 at intervals in the upper and lower directions.

[0020] The unlocking base 4 is fixed above the base sheet metal 5, and both are provided with mounting holes for the headrest rod 1 to pass through. The headrest bushing 6 is clamped in the mounting hole of the base sheet metal 5, and the two sides of the headrest rod 1 pass through the mounting holes of the unlocking base 4 and are inserted into the corresponding 5 headrest bushings 6.

[0021] Two unlocking push plates 7 are mounted on the unlocking base 4, sliding along the Y-direction (i.e., the left-right direction). The two unlocking push plates 7 are symmetrically arranged. Each unlocking push plate 7 is equipped with a locking pin 9, which engages with correspondingly high notches on either side of the headrest rod 1. The inner ends of the two unlocking push plates 7 are inclined, and a return spring 10 is installed between the outer ends of each unlocking push plate 7 and the unlocking base 4. A push button block 8 is connected to the two unlocking push plates 7. A push block slot 11 is provided on the unlocking base 4, and the push button block 8 slides within the slot 11 and is secured to the unlocking base 4 with a return spring 10.

[0022] The middle part of the button push block 8 is connected to the unlock button 2. Pressing the unlock button 2 can drive the button push block 8 to slide along the push block slide groove 11, thereby squeezing the two unlock push plates 7, so that the two unlock push plates 7 slide outward respectively to separate the locking pin 9 from the slot, thereby unlocking the headrest rod 1.

[0023] After the headrest rod 1 is unlocked, it can be adjusted to a suitable slot, and then the pressing force applied to the unlock button 2 is cancelled. The unlock button 2 can return to its original position under the action of its own return spring, the button push block 8 can return to its original position under the action of the return spring, and the two unlock push plates 7 can also return to their original positions under the action of the return spring, so that the two locking pins 9 are respectively engaged in the slots on both sides of the headrest rod 1, thereby locking the headrest rod 1.

[0024] Preferably, the inner ends of the two unlocking push plates 7 are arranged obliquely inward from front to rear, the push block slide 11 is arranged obliquely downward from front to rear, and the two ends of the button push block 8 are arranged with inclined surfaces matching the inner ends of the unlocking push plates 7. Pressing the unlocking button 2 can drive the button push block 8 to slide obliquely downward along the push block slide 11, so that the two ends of the button push block 8 can move backward relative to the unlocking push plate 7, thereby squeezing the two unlocking push plates 7, and then causing the two unlocking push plates 7 to slide outward respectively to separate the locking pin 9 from the notch, and finally realize the unlocking of the headrest insertion rod 1.

[0025] Preferably, the unlocking push plate 7 is provided with a through hole 71 for the corresponding side of the headrest rod 1 to pass through, and a margin is left between the through hole 71 and the headrest rod 1 for the unlocking push plate 7 to move outward. The locking pin 9 is arranged in the through hole 71 and is inwardly engaged in the groove on the corresponding side. The structure is simple and the design is ingenious.

[0026] Preferably, the unlocking push plate 7 is limited to the unlocking base 4 on the left and right sides, and the front end face and / or rear end face of the unlocking push plate 7 are provided with ribs for contacting the inner wall surface of the unlocking base 4 to eliminate the gap and avoid shaking. The contact between the ribs and the inner wall surface is equivalent to line-surface contact, which can also avoid excessive friction affecting the left and right sliding of the unlocking push plate 7.

[0027] Preferably, the locking pin 9 and the corresponding unlocking push plate 7 are integrally injection-molded, which is convenient to process and has good quality stability.

[0028] Preferably, a button cover 3 is fixedly provided on the unlocking base 4 above the middle of the button push block 8, and the unlocking button 2 is embedded in the button cover 3. When the unlocking button 2 is pressed, it can push the button push block 8 to slide along the push block slide groove 11. The structure is simple and the operation is convenient.

Claims

1. A two-way headrest mechanism with a central unlocking function, comprising a headrest insertion rod (1), wherein a plurality of notches are provided on both sides of the headrest insertion rod (1), and the mechanism is characterized in that: The invention also includes an unlocking base (4) and a base sheet metal (5), wherein the unlocking base (4) is fixed on the top of the base sheet metal (5), and both are provided with mounting holes for the headrest plug rod (1) to pass through, and both sides of the headrest plug rod (1) are inserted into the mounting holes, and two unlocking push plates (7) are provided on the unlocking base (4) for sliding along the Y direction, and the two unlocking push plates (7) are symmetrically arranged on the left and right, and the two unlocking push plates (7) are provided with locking pins (9), and the two locking pins (9) are clamped in the corresponding height slots on both sides of the headrest plug rod (1), and the inner ends of the two unlocking push plates (7) are arranged in an inclined surface, and the outer ends of the two unlocking push plates (7) and the unlocking base (4) are arranged in an inclined surface. A return spring (10) is provided. A button push block (8) is in contact and connected between the two unlocking push plates (7). A push block slide groove (11) is provided on the unlocking base (4). The button push block (8) is slidably arranged in the push block slide groove (11) and a return spring (10) is provided between the button push block (8) and the unlocking base (4). An unlocking button (2) is connected to the middle of the button push block (8). Pressing the unlocking button (2) can drive the button push block (8) to slide along the push block slide groove (11), thereby squeezing the two unlocking push plates (7), so that the two unlocking push plates (7) slide outward respectively to separate the locking pin (9) from the notch, thereby unlocking the headrest insertion rod (1).

2. The two-way headrest mechanism with center unlocking according to claim 1, characterized in that: The inner ends of the two unlocking push plates (7) are arranged obliquely inward from front to back, the push block chute (11) is arranged obliquely downward from front to back, and the two ends of the button push block (8) are arranged in an inclined surface matching the inner ends of the unlocking push plates (7). Pressing the unlocking button (2) can drive the button push block (8) to slide obliquely downward along the push block chute (11), so that the two ends of the button push block (8) can move backward relative to the unlocking push plates (7), thereby squeezing the two unlocking push plates (7).

3. The center-unlocking two-way headrest mechanism according to claim 2, characterized in that: The unlocking push plate (7) is provided with a through hole (71) for the corresponding side of the headrest insertion rod (1) to pass through, and a margin for the unlocking push plate (7) to move outward is left between the through hole (71) and the headrest insertion rod (1), and the locking pin (9) is provided in the through hole (71) and is inwardly engaged in the notch on the corresponding side.

4. The two-way headrest mechanism with center unlocking according to claim 3, characterized in that: The locking pin (9) and the corresponding unlocking push plate (7) are integrally injection-molded.

5. The two-way headrest mechanism with center unlocking according to claim 2, characterized in that: A button cover plate (3) is fixedly provided on the unlocking base (4) above the middle portion of the button push block (8); the unlocking button (2) is embedded in the button cover plate (3); and when the unlocking button (2) is pressed, it can push the button push block (8) to slide along the push block slide groove (11).

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