Ultra-thin headrest for car seat

Abstract

The present invention discloses an ultra-thin headrest for a car seat, comprising a headrest body and a seat back, wherein the headrest body is located on the top of the seat back and is provided with a group of connecting accessories, and the headrest body is moved away from or close to the seat back through the adjustable structure of the connecting accessories. The present invention has firm positioning, compact and reasonable structure, convenient and quick operation, and combined with ultra-thin connecting accessories, the thickness of the headrest can be controlled within 40mm, and the front and rear adjustment of the headrest is realized. The design of the guide component ensures the stability during the adjustment and movement process, which conforms to the development concept of integration and thinness of the seat back and headrest, and the invention has broad market application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of automobile seats, in particular to an ultra-thin headrest for an automobile seat. Background Art

[0002] At present, the traditional car seat headrests on the market, such as Figure 1 As shown, the headrest body 1 is mostly independent of the top of the seat, and is inserted into the headrest guide sleeve 4 in the seat back 2 and locked through two pull-out connecting rods 3 that can move up and down. The specific unlocking and locking structures are arranged on the backrest, or the unlocking and locking structures are arranged on the headrest. In order to accommodate the moving mechanism inside the headrest, most of the headrest bodies are more than 100 mm thick, and the thickness is large and the weight is heavy. There are very few ultra-thin headrests with a thickness controlled within 40 mm.

[0003] The Chinese utility model patent L-shaped ultra-thin car seat headrest, patent number is 201721823718.6, the patent authorization time is September 14, 2018, and it involves an automobile accessory, including headrest foam and headrest rod, the headrest foam is in an inverted L shape, the headrest rod includes an installation headrest rod and a reinforcement headrest rod, the installation headrest rod includes an installation vertical rod and a reinforcement horizontal rod, the reinforcement horizontal rod and part of the installation vertical rod are arranged in the horizontal section of the headrest foam, the installation vertical rod extends vertically downward and extends out of the lower side of the horizontal section of the headrest foam, the reinforcement headrest rod includes a reinforcement vertical rod and a reinforcement horizontal rod, both of the reinforcement vertical rod and the reinforcement horizontal rod are arranged in the vertical section of the headrest foam, the upper ends of the two sections of the reinforcement vertical rods are also provided with a reinforcement diagonal rod extending upward and arranged at the intersection of the horizontal section and the vertical section of the headrest foam, the installation headrest rod and the reinforcement headrest rod are both integral structures formed integrally with the headrest foam in a mold. Compared with the existing conventional technology, the headrest is thinner in thickness, and is still connected to the seat by a plug-in rod, and can only be adjusted in the up and down positions, and it is difficult to adjust the front and rear positions.

[0004] With the continuous development of the new energy vehicle industry, energy saving and weight reduction have become the development direction of the entire interior decoration industry and even the entire vehicle. In recent years, seats, as an important component of automobile interior decoration, have gradually transitioned to being lighter and thinner. How to develop an ultra-thin headrest for automobile seats that can be adjusted in the front and rear directions and whose thickness can be controlled within 40mm has become a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0005] The purpose of the present invention is to provide an ultra-thin headrest for a car seat, which realizes an integrated and lightweight design of a seat back and a headrest, and realizes the front and rear adjustment function of the ultra-thin headrest, so that it can better adapt to market development.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The invention discloses an ultra-thin headrest for a car seat, comprising a headrest body and a seat back, wherein the headrest body is located on the top of the seat back and is provided with a group of connecting accessories, and the headrest body is moved away from or close to the seat back through an adjustable structure of the connecting accessories.

[0008] Preferably, the thickness of the headrest body is set to H, and H≤40mm.

[0009] Preferably, the seat back is configured as an ultra-thin structure, and the headrest body is connected to the top front side of the seat back through the connecting accessory.

[0010] Preferably, the seat back adopts an existing thick structure, a U-shaped groove is reserved at the top of the seat back, and the headrest body is connected to the U-shaped groove through the connecting accessory.

[0011] Preferably, the connecting accessory includes an unlocking mechanism and a locking mechanism that cooperate with each other, the unlocking mechanism is located on one side of the headrest body, and the locking mechanism is located on one side of the seat back, the unlocking mechanism and the locking mechanism are assembled together through a connecting support plate, the connecting support plate is installed on the seat back, and the connecting support plate is located on the side of the seat back that fits the headrest body.

[0012] Preferably, the unlocking mechanism comprises an unlocking synchronization rod, an unlocking push rod and a return spring, one end of the unlocking synchronization rod passes through and is connected in the second sliding guide sleeve and can rotate around the axis of the second sliding guide sleeve, the second sliding guide sleeve is connected to the upper part of the connecting support plate and close to the center position; the unlocking synchronization rod is horizontally placed and installed on the headrest body, the rotating tooth head at the other end of the unlocking synchronization rod cooperates with the translational rack at the top inner side of the unlocking push rod, and the outer side of the unlocking push rod is connected with an unlocking button; the center hole of the return spring is sleeved on the headrest body, one working end of the return spring abuts against the air avoidance platform of the headrest body, and the other working end of the return spring abuts against the spring limiter; the outer side of the unlocking push rod is provided with a square through groove for air avoidance;

[0013] The locking mechanism includes a locking pin and a locking shift block. The locking pin is installed in the mounting groove of the unlocking synchronization rod located at the end of the seat back side through a connecting screw. The locking shift block is connected to the frame of the seat back. The locking shift block is provided with a plurality of shift grooves distributed at equal intervals. When the unlocking synchronization rod moves horizontally along the second sliding guide sleeve, it drives the locking pin to be embedded in the shift groove for locking and positioning.

[0014] Preferably, the unlocking synchronization rod includes a shaft core and a sleeve, the shaft core and the rotating tooth head are integrally formed, the sleeve is sleeved on the shaft core, one end of the sleeve is positioned and connected to the headrest body, and the outer periphery of the sleeve matches the inner hole of the second sliding guide sleeve.

[0015] Preferably, the connecting accessory also includes two groups of guide components, and the guide components include a first sliding guide sleeve and a sliding guide rod. The first sliding guide sleeve is positioned and connected to the connecting support plate, one end of the sliding guide rod is connected to the headrest body, and the other end of the sliding guide rod is connected to the inner hole of the first sliding guide sleeve, and moves horizontally along the axis direction of the first sliding guide sleeve when moving.

[0016] Preferably, two sets of the first sliding guide sleeves and sliding guide rods that match each other are located on both sides of the bottom of the connecting support plate 503 .

[0017] Preferably, the second sliding guide sleeve is connected to the upper part of the connecting support plate and close to the center position, and one second sliding guide sleeve and two first sliding guide sleeves are arranged in a triangle.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are:

[0019] The present invention discloses an ultra-thin headrest for a car seat, comprising a headrest body and a seat back, wherein the headrest body is moved away from or close to the seat back through an adjustable structure of a connecting accessory, wherein the thickness H of the headrest body is ≤ 40 mm; the present invention realizes the installation connection of the ultra-thin headrest, and realizes the front and rear position adjustment of the headrest through the design of the connecting accessory. The present invention has firm positioning, compact and reasonable structure, and convenient and quick operation. Combined with the ultra-thin connecting accessory, the thickness of the headrest can be controlled within 40 mm, and the front and rear adjustment of the headrest is realized. The design of the guide component ensures the stability during the adjustment and movement process, which is in line with the development concept of integration and lightness of the seat back and headrest. The invention has broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the structure of a pull-out headrest in the prior art;

[0022] Figure 2 This is a schematic diagram of an ultra-thin headrest for a car seat of the present invention;

[0023] Figure 3 A perspective view of the connection position of the ultra-thin headrest for the automobile seat of the present invention;

[0024] Figure 4 This is a front view of the unlocking mechanism of the present invention;

[0025] Figure 5 It is a three-dimensional schematic diagram of the unlocking mechanism of the present invention;

[0026] Figure 6 It is a three-dimensional schematic diagram of the locking mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the assembly of the unlocking synchronization rod of the present invention;

[0028] Figure 8 This is an exploded schematic diagram of the unlocking synchronization rod of the present invention;

[0029] Fig. 9 This is a schematic diagram of an explosion of the unlock button of the present invention;

[0030] Description of reference numerals: 1, headrest body; 2, seat back; 3, pull-out connecting rod; 4, headrest guide sleeve; 5, connecting accessories; 501, unlocking mechanism; 502, locking mechanism; 503, connecting support plate; 504, first sliding guide sleeve; 505, sliding guide rod; 506, second sliding guide sleeve;

[0031] 501-1, unlocking synchronization rod; 501-2, unlocking push rod; 501-3, return spring; 501-4, unlocking button;

[0032] 501-11, rotating gear head; 501-12, shaft core; 501-13, shaft sleeve;

[0033] 501-21, translation rack; 501-22, spring limiter; 501-23, square through slot;

[0034] 501-41, button housing; 501-42, button body; 501-43, return spring;

[0035] 502-1, locking pin; 502-2, connecting screw; 502-3, locking gear block. DETAILED DESCRIPTION

[0036] like Figure 2-8 As shown, an ultra-thin headrest for a car seat comprises a headrest body 1 and a seat back 2, wherein the headrest body 1 is located on the top of the seat back 2 and is provided with a set of connecting accessories 5, and the headrest body 1 is moved away from or close to the seat back 2 through the adjustable structure of the connecting accessories 5. Specifically, the thickness of the headrest body 1 is set to H, and H is ≤ 40 mm.

[0037] In one embodiment, the seat back 2 is configured as an ultra-thin structure, and the headrest body 1 is connected to the top front side of the seat back 2 through the connecting accessory 5 .

[0038] In another embodiment, the seat back 2 adopts an existing thick structure, a U-shaped groove is reserved on the top of the seat back 2, and the headrest body 1 is connected to the U-shaped groove through the connecting accessory 5.

[0039] like Figure 3-8 As shown, the connecting accessory includes an unlocking mechanism 501 and a locking mechanism 502 that cooperate with each other, the unlocking mechanism 501 is located on one side of the headrest body 1, and the locking mechanism 502 is located on one side of the seat back 2, the unlocking mechanism 501 and the locking mechanism 502 are assembled together through a connecting support plate 503, the connecting support plate 503 is installed on the seat back 2, and the connecting support plate 503 is located on the side where the seat back 2 and the headrest body 1 are in contact.

[0040] Specifically, Figure 4 , 5 As shown, the unlocking mechanism 501 includes an unlocking synchronization rod 501-1, an unlocking push rod 501-2 and a return spring 501-3, one end of the unlocking synchronization rod 501-1 is connected to the second sliding guide sleeve 506 and can rotate around the axis of the second sliding guide sleeve 506, and the second sliding guide sleeve 506 is connected to the upper part of the connecting support plate 503 and close to the center position; the unlocking synchronization rod 501-1 is horizontally placed and installed on the headrest body 1, and the rotating tooth head 501-11 at the other end of the unlocking synchronization rod 501-1 cooperates with the translation rack 501-21 at the inner top of the unlocking push rod 501-2. The teeth of the rotating gear head 501-11 mesh with the teeth on the translation rack 501-21, and the outer side of the unlocking push rod 501-2 is connected with an unlocking button 501-4; the center hole of the reset spring 501-3 is sleeved on the headrest body 1, one working end of the reset spring 501-3 abuts on the air avoidance platform of the headrest body 1, and the other working end of the reset spring 501-3 abuts on the spring stopper 501-22; the outer side of the unlocking push rod 501-2 is provided with a square through groove 501-23 for air avoidance, and the square through groove 501-23 is mainly provided to avoid the installation of other parts at the corresponding position. The specific reset spring 501-3 adopts a torsion spring, which is easy and quick to install.

[0041] like Figure 6-8As shown, the locking mechanism 502 includes a locking pin 502-1 and a locking shift block 502-3. The locking pin 502-1 is installed in the mounting groove of the unlocking synchronization rod 501-1 located at the side end of the seat back 2 through a connecting screw 502-2. The locking shift block 502-3 is welded or locked to the frame of the seat back 2 through a bolt assembly. The locking shift block 502-3 is provided with a plurality of shift slots distributed at equal intervals. When the unlocking synchronization rod 501-1 moves horizontally along the second sliding guide sleeve 506, it drives the locking pin 502-1 to be embedded in the shift slot for locking and positioning. Specifically, the locking shift block 502-3 cooperates with the locking pin 502-1 to form a shift limit when the headrest moves forward and backward at different distances.

[0042] like Figure 7 , 8 As shown, the unlocking synchronization rod 501-1 includes a shaft core 501-12 and a shaft sleeve 501-13. The shaft core 501-12 is integrally formed with the rotating tooth head 501-11. The shaft sleeve 501-13 is sleeved on the shaft core 501-12. One end of the shaft sleeve 501-13 is riveted to the headrest body 1. The outer periphery of the shaft sleeve 501-13 matches the inner hole of the second sliding guide sleeve 506. During the adjustment operation, the shaft sleeve 501-13 moves with the headrest body 1 and the second sliding guide sleeve 506 plays a positioning and guiding role for the shaft sleeve 501-13 during the movement.

[0043] Specifically, Fig. 9 As shown, the unlocking button 501-4 includes a button shell 501-41, a button body 501-42 and a return spring 501-43. The button shell 501-41 is snap-fitted and fixed in the reserved mounting groove of the headrest body 1, and the button body 501-42 is movably mounted in the central groove of the button shell 501-41. The central column of the button body 501-42 passes through the central hole of the button shell 501-41 and contacts the outer end face of the unlocking push rod 501-2. The return spring 501-43 is sleeved on the central column of the button body 501-42, and both ends of the return spring 501-43 abut against the bottom surface of the central groove of the button shell 501-41 and the inner side surface of the pressing end face of the button body 501-42. When adjusting the spacing, the button body 501-42 is manually pressed to drive the unlocking push rod 501-2 to move inward, thereby driving the unlocking synchronization rod 501-1 and the locking pin 502-1 to rotate by rotating the tooth head 501-11, and the headrest body 1 can be pulled to move horizontally after unlocking. The unlocking button is independently set through structural improvement. Compared with the prior art, the unlocking button is separated from the seat back, which is more convenient and quick to operate, occupies less space, and has a more compact structure.

[0044] like Figure 3 , 5 As shown in Figures 6 and 7, the connecting attachment 5 also includes two groups of guide components, the guide components include a first sliding guide sleeve 504 and a sliding guide rod 505, the first sliding guide sleeve 504 is positioned and connected to the connecting support plate 503, one end of the sliding guide rod 505 is connected to the headrest body 1, specifically, the sliding guide rod 505 is made of metal material, one end of the sliding guide rod 505 is connected to the headrest body 1 by riveting or screwing, the other end of the sliding guide rod 505 is connected to the inner hole of the first sliding guide sleeve 504, and moves horizontally along the axis direction of the first sliding guide sleeve 504 when moving. Specifically, two groups of the first sliding guide sleeve 504 and the sliding guide rod 505 that match each other are located on both sides of the bottom of the connecting support plate 503. The setting of the guide component improves the stable balance of positioning, and at the same time plays a guiding role when sliding to adjust the front and rear positions, avoiding the problem of tilting and blocking, thereby effectively improving the smoothness of the adjustment of the component.

[0045] The second sliding guide sleeve 506 is connected to the upper part of the connecting support plate 503 and close to the center position, and one second sliding guide sleeve 506 and two first sliding guide sleeves 504 are arranged in a triangle. The triangular arrangement structure can effectively maintain the stability of the structure and ensure the smoothness of the front and rear adjustment process. In addition, in other embodiments, the guide assembly is set to one or more groups, such as three or four groups, and the unlocking mechanism 501 is set to at least one group, and can also be set to two groups. The installation position of the guide assembly and the unlocking mechanism 501 is adjusted according to the structure of the headrest body 1 and the seat back 2. The arrangement method is not limited to a triangle, and can also be a quadrilateral or other shapes.

[0046] The adjustment process of the headrest body 1 of the present invention is as follows:

[0047] First, when the headrest body 1 and the seat back 2 are fitted together, Figure 3 As shown, at this time, the locking pin 502-1 is installed in the installation groove at the end of the unlocking synchronization rod 501-1 and is located outside the locking gear block 502-3;

[0048] When the headrest body 1 moves forward and needs to be away from the seat back 2, as shown in FIG. Figure 4As shown, first press the button body 501-42 on the unlocking button 501-4, the unlocking push rod 501-2 is pushed inward, and the return spring 501-3 is in a compressed state; because the teeth of the rotating tooth head 501-11 are meshed with the teeth on the translation rack 501-21, the shaft core 501-12 and the rotating tooth head 501-11 are integrally formed, and the rotating tooth head 501-11 drives the shaft core 501-12 to rotate clockwise, thereby driving the locking pin 502-1 at the other end to rotate clockwise, and the locking pin rotates 90° to play a role. Unlocking action; then the headrest body 1 is moved forward to an appropriate position. When the headrest body 1 stops moving, the button body 501-42 is released. Under the action of the return spring 501-43, the button body 501-42 is reset, and the push force of the button body on the unlocking push rod 501-2 is released. The rotating tooth head 501-11 is driven to rotate in the opposite direction by the translation rack 501-21, thereby driving the unlocking synchronization rod 501-1 and the locking pin 502-1 to rotate in the opposite direction and slide into the closest gear slot on the locking gear block 502-3, thereby realizing the locking positioning function. When the locking pin 502-1 is embedded in any gear slot, the position of the locking pin 502-1 along the circumferential rotation direction is the same as the initial state, and the unlocking push rod 501-2 will move outward in the opposite direction to the initial position.

[0049] By repeating the above operation process, the headrest body 1 can be moved horizontally, thereby adjusting the headrest body 1 away from or close to the seat back 2. The realization of this adjustment function can meet the adaptation of different passengers to the headrest position and improve the riding comfort.

[0050] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A headrest for a car seat, characterized in that: The invention comprises a headrest body (1) and a seat back (2), wherein the headrest body (1) is located on the top of the seat back (2) and is provided with a group of connecting accessories (5), and the headrest body (1) is moved away from or close to the seat back (2) through the adjustable structure of the connecting accessories (5); The connecting accessory comprises an unlocking mechanism (501) and a locking mechanism (502) that cooperate with each other, wherein the unlocking mechanism (501) is located on one side of the headrest body (1), and the locking mechanism (502) is located on one side of the seat back (2), and the unlocking mechanism (501) and the locking mechanism (502) are assembled together via a connecting support plate (503), wherein the connecting support plate (503) is mounted on the seat back (2), and the connecting support plate (503) is located on the side of the seat back (2) that is in contact with the headrest body (1); The unlocking mechanism (501) comprises an unlocking synchronization rod (501-1), an unlocking push rod (501-2) and a return spring (501-3); one end of the unlocking synchronization rod (501-1) is connected to the second sliding guide sleeve (506) and can rotate around the axis of the second sliding guide sleeve (506); the second sliding guide sleeve (506) is connected to the upper part of the connecting support plate (503) and close to the center position; the unlocking synchronization rod (501-1) is horizontally placed and installed on the headrest body (1); the rotating tooth head (501-11) at the other end of the unlocking synchronization rod (501-1) is ) cooperates with the translation rack (501-21) at the top of the inner side of the unlocking push rod (501-2), and the outer side of the unlocking push rod (501-2) is connected with an unlocking button (501-4); the center hole of the return spring (501-3) is sleeved on the headrest body (1), one working end of the return spring (501-3) abuts on the air avoidance platform of the headrest body (1), and the other working end of the return spring (501-3) abuts on the spring stopper (501-22); the outer side of the unlocking push rod (501-2) is provided with a square through groove (501-23) for air avoidance; The locking mechanism (502) comprises a locking pin (502-1) and a locking shift block (502-3); the locking pin (502-1) is installed in a mounting groove of the unlocking synchronization rod (501-1) located at the side end of the seat back (2) through a connecting screw (502-2); the locking shift block (502-3) is connected to the frame of the seat back (2); a plurality of shift grooves distributed at equal intervals are arranged on the locking shift block (502-3); when the unlocking synchronization rod (501-1) moves horizontally along the second sliding guide sleeve (506), the locking pin (502-1) is driven to be embedded in the shift groove for locking and positioning; The unlocking synchronization rod (501-1) comprises an axis core (501-12) and a sleeve (501-13), the axis core (501-12) and the rotating tooth head (501-11) are integrally formed, the sleeve (501-13) is sleeved on the axis core (501-12), one end of the sleeve (501-13) is positioned and connected to the headrest body (1), and the outer periphery of the sleeve (501-13) matches the inner hole of the second sliding guide sleeve (506); The connecting accessory (5) also includes two sets of guide components, and the guide components include a first sliding guide sleeve (504) and a sliding guide rod (505). The first sliding guide sleeve (504) is positioned and connected to the connecting support plate (503). One end of the sliding guide rod (505) is connected to the headrest body (1). The other end of the sliding guide rod (505) passes through the inner hole of the first sliding guide sleeve (504), and moves horizontally along the axis direction of the first sliding guide sleeve (504) when moving.

2. The headrest for a car seat according to claim 1, characterized in that: The thickness of the headrest body (1) is set to H, and H is ≤ 40 mm.

3. The headrest for a car seat according to claim 1, characterized in that: The headrest body (1) is connected to the top front side of the seat back (2) via the connecting accessory (5).

4. The headrest for a car seat according to claim 1, characterized in that: A U-shaped groove is reserved at the top of the seat back (2), and the headrest body (1) is connected to the U-shaped groove via the connecting accessory (5).

5. The headrest for a car seat according to claim 1, characterized in that: Two sets of the first sliding guide sleeves (504) and sliding guide rods (505) that match each other are located on both sides of the bottom of the connecting support plate (503).

6. The headrest for a car seat according to claim 1, characterized in that: The second sliding guide sleeve (506) is connected to the upper part of the connecting support plate (503) and close to the center position, and one second sliding guide sleeve (506) and two first sliding guide sleeves (504) are arranged in a triangle.

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