Headrest opening adjustment device

Abstract

The present invention relates to a headrest opening and adjusting device, comprising a headrest body, a chair back and a linkage, wherein the headrest body is slidably arranged on the chair back, and a headrest fixing member is fixedly installed on the back of the headrest body; headrest side wings are slidably sleeved on both sides of the headrest body, and an inclined groove and a gear groove are provided on the chair back, and the linkage member is slidably arranged inside the inclined groove and the gear groove, and the end of the linkage member passes through the headrest side wing and is rotatably connected with the headrest side wing; a storage groove is provided in the middle of the headrest body, and a gear fixing block is slidably sleeved inside the storage groove, one end of the gear fixing block extends into the interior of the chair back and is slidably sleeved with the chair back, and the other end of the gear fixing block is fixedly connected with a spring, and the other end of the spring is fixedly connected with the inner wall of the storage groove. The present invention proposes a headrest opening and adjusting device, which has the effect of being easy to adjust and use.

Description

Technical Field

[0001] The invention relates to the technical field of headrests, in particular to a headrest opening and adjusting device. Background Art

[0002] A child safety seat is a seat that can be installed on a car seat for children to sit on, which can effectively improve the safety of children in the car. In the event of a car collision or sudden deceleration, a child car safety seat can reduce the impact force on the child and restrict the child's body movement to reduce their injuries. Usually, existing child safety seats are equipped with an adjustable headrest, but the left and right wings of the headrest cannot be opened or closed when in use, or the left and right wings need to be adjusted separately, which is complicated in structure, cumbersome in operation, and inconvenient for users to use.

[0003] In order to solve the above problems, a headrest opening and adjusting device is proposed in the present application. Summary of the invention

[0004] The present invention designs a headrest opening and adjusting device, which solves the technical problem that existing child safety seats are equipped with headrests that can be adjusted up and down, but the left and right wings of the headrest cannot be opened or folded when in use, or the left and right wings need to be adjusted separately, the structure is complicated, the operation is cumbersome, and the user is inconvenient to use.

[0005] In order to solve the above-mentioned technical problems, the present invention adopts the following solutions:

[0006] A headrest opening and adjusting device comprises a headrest main body and a chair back, the headrest main body being slidably arranged on the chair back, headrest side wings being slidably sleeved on both sides of the headrest main body, a linkage member being arranged on the headrest main body, an inclined groove being provided on the chair back, the middle part of the linkage member being hinged to the headrest main body, the lower end of the linkage member being slidably arranged in the inclined groove, the upper end of the linkage member being connected to the headrest side wings, when the headrest main body slides up and down along the chair back, the linkage member is driven to move up and down, the lower end of the linkage member moves inward or outward along the inclined groove, driving the upper end of the linkage member to move outward or inward, thereby making the headrest side wings open or close.

[0007] Furthermore, the linkage member includes a first connecting rod and a second connecting rod, and the middle parts of the first connecting rod and the second connecting rod are hinged in an X shape.

[0008] Furthermore, the middle hinge of the linkage is fixed on the headrest body, the upper end of the linkage is rotatably connected to the long slot holes on the headrest side wings on the same side, and the lower end of the linkage is slidably connected to the oblique slot of the seat back.

[0009] Furthermore, the inclined groove includes a left inclined groove and a right inclined groove, the left inclined groove and the right inclined groove are both arranged longitudinally, the spacing between the left inclined groove and the right inclined groove increases from bottom to top, and the lower ends of the linkage parts are respectively arranged in the inclined grooves on the same side.

[0010] Furthermore, a gear slot is provided on the seat back, a storage slot is provided in the middle of the headrest body, and a gear fixing block is slidably sleeved inside the storage slot, one end of the gear fixing block extends into the gear slot and is slidably sleeved with the gear slot, the other end of the gear fixing block is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner wall of the storage slot;

[0011] Slide grooves are provided on both sides of the middle part of the headrest body, and a gear adjustment block is slidably connected to the slide groove, the bottom of the gear adjustment block is pressed against the top of the gear fixing block, the top of the gear adjustment block is fixedly connected to a headrest gear adjustment belt, and the top of the headrest gear adjustment belt is fixedly connected to a pull ring.

[0012] Furthermore, long openings are provided on both sides of the middle part of the chair back, a limiting rod is installed on the back of the headrest body, one end of the limiting rod passes through the long opening and is fixedly connected to the headrest fixing piece, and is slidably connected to the inner wall of the long opening.

[0013] Furthermore, a headrest fixing piece is fixedly mounted on the back of the headrest body, and the headrest fixing piece is used to connect the headrest body and the chair back, and enables the headrest body to move up and down along the chair back.

[0014] Furthermore, the interior of the headrest body is hollow, and a slot hole is provided on each of the left and right sides of the headrest body. An insert block that matches the slot hole on the same side is provided on the side wing of the headrest. The insert block is inserted in the slot hole and can slide left and right.

[0015] Furthermore, the long slot hole is provided in the middle section of the plug block, and a receiving groove for receiving the upper end of the linkage member and allowing the linkage member to move left and right is provided at the lower end of the plug block.

[0016] Furthermore, the plurality of gear slots are arranged transversely and overlap and intersect with the oblique slots.

[0017] The headrest opening and adjusting device has the following beneficial effects:

[0018] When the pull ring is pulled, the gear adjustment block rotates through the adjustment belt transmission, driving the gear fixing block to disengage from the gear slot on the seat back, and the headrest body can then slide up and down. When sliding up, one end of the linkage member opens under the action of the seat back inclined slot, causing the other end of the linkage member to open as well, thereby driving the side wings to open; when the headrest slides down, one end of the linkage member closes under the action of the seat back inclined slot, causing the other end of the linkage member to close as well, thereby driving the side wings of the headrest to close, so that when the headrest height is adjusted, the headrest side wings 1 are linked to open and close, thereby facilitating adjustment and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : A structural schematic diagram of a headrest opening and adjusting device proposed by the present invention;

[0020] Figure 2 : A schematic diagram of the structure of a seat back in a headrest opening adjustment device proposed by the present invention;

[0021] Figure 3 : A schematic diagram of a partially disassembled structure of a headrest opening and adjusting device proposed by the present invention;

[0022] Figure 4 : A partial cross-sectional structural diagram of a headrest opening and adjusting device proposed by the present invention;

[0023] Figure 5 : A schematic diagram of a partially disassembled structure of a headrest opening and adjusting device proposed by the present invention;

[0024] Figure 6 : A schematic diagram of the assembly structure of a headrest opening and adjusting device proposed by the present invention.

[0025] Description of reference numerals:

[0026] 1—side wing of headrest; 1-1—long slot hole; 2—headrest body; 3—linkage member; 3-1—one end of the linkage member; 3-2—middle part of the linkage member; 3-3—the other end of the linkage member; 4—headrest gear adjustment belt; 5—pull ring; 6—gear adjustment block; 7—gear fixing block; 8—headrest fixing member; 9—seat back; 91—oblique slot; 92—gear slot; 10—spring. DETAILED DESCRIPTION

[0027] Combine the following Figures 1 to 6 , the present invention is further described:

[0028] The headrest opening adjustment device proposed by the present invention comprises a headrest body 2, a seat back 9 and a linkage member 3, wherein the headrest body 2 is slidably arranged on the seat back 9, and a headrest fixing member 8 is fixedly installed on the back of the headrest body 2;

[0029] The headrest body 2 is slidably sleeved with the headrest side wings 1 on both sides, the seat back 9 is provided with an inclined groove 91 and a gear groove 92, the linkage member 3 is slidably arranged inside the inclined groove 91 and the gear groove 92, and the end of the linkage member 3 passes through the headrest side wings 1 and is rotatably connected with the headrest side wings 1;

[0030] A storage slot is provided in the middle of the headrest body 2, and a gear fixing block 7 is slidably sleeved inside the storage slot, one end of the gear fixing block 7 extends into the gear slot 92 and is slidably sleeved with the gear slot 92, and the other end of the gear fixing block 7 is fixedly connected to a spring 10, and the other end of the spring 10 is fixedly connected to the inner wall of the storage slot;

[0031] The interior of the headrest body 2 is hollow, and a slot hole is provided on each of the left and right sides of the headrest body 2. An insertion block matching the slot hole on the same side is provided on the headrest side wing 1. The insertion block is inserted in the slot hole and can slide left and right; a long slot hole is provided in the middle section of the insertion block, and a accommodating groove for accommodating the upper end of the linkage member 3 and allowing it to move left and right is provided at the lower end of the insertion block.

[0032] Slide grooves are provided on both sides of the middle part of the headrest body 2, and a gear adjustment block 6 is slidably connected to the slide groove. The bottom of the gear adjustment block 6 is pressed against the top of the gear fixing block 7. The top of the gear adjustment block 6 is fixedly connected to the headrest gear adjustment belt 4, and the top of the headrest gear adjustment belt 4 is fixedly connected to a pull ring 5.

[0033] The linkage member 3 includes a first link and a second link, and the middle parts of the first link and the second link are hinged in an X shape; the length of the lower end of the hinge of the linkage member 3 is less than the length of the upper end of the hinge; the middle hinge of the linkage member 3 is fixed on the headrest body 2, and the upper ends of the linkage member 3 are rotatably connected to the long slots on the headrest side wings 1 on the same side, and the lower ends of the linkage member 3 are slidably connected to the inclined grooves 91 of the seat back 9; the inclined grooves 91 include a left inclined groove and a right inclined groove, and the left inclined groove and the right inclined groove are both longitudinally arranged, and the spacing between the left inclined groove and the right inclined groove increases from bottom to top, and the lower ends of the linkage member 3 are respectively arranged in the inclined grooves 91 on the same side; a plurality of gear slots 92 are transversely arranged, and two inclined slots 91 are longitudinally arranged, and the gear slots 92 and the inclined slots 91 are overlapped and cross-arranged and do not affect each other, and the interior of the headrest body 2 is hollow to cooperate with the opening and closing of the headrest side wings 1 on both sides and the movement of the upper and lower ends of the linkage member 3.

[0034] It should be noted that, in conjunction with the Figure 3 A long slot hole 1-1 is provided on the side wing 1 of the headrest.

[0035] In an optional embodiment, long openings are opened on both sides of the middle part of the seat back 9, and a limiting rod is installed on the back of the headrest body 2. One end of the limiting rod passes through the long opening and is fixedly connected to the headrest fixing part 8, and is slidably connected to the inner wall of the long opening.

[0036] In an optional embodiment, one end of the linkage 3 is rotatably connected to the long slot hole of the headrest side wing 1, the middle part of the linkage 3 is rotatably connected to the headrest body 2 through a rotating shaft, and the other end of the linkage 3 is slidably connected to the inclined slot 91 of the seat back 9.

[0037] It should be noted that, in conjunction with the Figure 3 One end of the linkage member 3 is 3-3, and one end 3-3 of the linkage member 3 is rotatably connected to the long slot hole 1-1 of the headrest side wing 1, the middle part of the linkage member 3 is 3-2, and the middle part 3-2 of the linkage member 3 is rotatably connected to the headrest body 2 through a rotating shaft, and the other end of the linkage member 3 is 3-1, and 3-1 of the linkage member 3 is slidably connected to the inclined slot 91 of the seat back 9.

[0038] In an optional embodiment, the outer wall of the headrest fixing member 8 is slidably connected to the outer wall of the seat back 9 .

[0039] In an optional embodiment, the top end of the headrest position adjustment belt 4 extends to the outside of the headrest body 2 and is slidably connected to the headrest body 2 .

[0040] A fan-shaped or inverted triangle opening is provided on the rear side of the headrest body 2 to facilitate the installation of the linkage member 3 .

[0041] The working principle of the present invention is as follows:

[0042] When the pull ring 5 is pulled, the gear adjustment block 6 is rotated through the adjustment belt 4, driving the gear fixing block 7 to disengage from the gear slot 92 on the seat back 9, and the headrest body 2 can then slide up and down. When sliding up, one end 3-1 of the linkage 3 opens under the action of the inclined slot 91, so that the other end 3-3 of the linkage 3 also opens, thereby driving the side wing 1 to open; when the headrest slides down, one end 3-1 of the linkage 3 is folded under the action of the inclined slot 91, so that the other end 3-3 of the linkage 3 also closes, thereby driving the headrest side wing 1 to close, so that when the headrest height is adjusted, the headrest side wing 1 is linked to open and close, thereby facilitating adjustment and use.

[0043] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A headrest opening adjustment device, comprising a headrest body (2) and a seat back (9), wherein the headrest body (2) is slidably arranged on the seat back (9), characterized in that: The headrest body (2) is slidably sleeved with headrest side wings (1) on both sides, a linkage member (3) is provided on the headrest body (2), an inclined groove (91) is provided on the chair back (9), the middle part of the linkage member (3) is hinged to the headrest body (2), the lower end of the linkage member (3) is slidably arranged in the inclined groove (91), the upper end of the linkage member (3) is connected to the headrest side wings (1), and when the headrest body (2) slides up and down along the chair back (9), the linkage member (3) is driven to move up and down, and the lower end of the linkage member (3) moves along the chair back (9). The inclined groove (91) moves inward or outward, driving the upper end of the linkage member (3) to move outward or inward, thereby causing the headrest wing (1) to open or close; the linkage member (3) comprises a first connecting rod and a second connecting rod, the middle parts of the first connecting rod and the second connecting rod are hinged in an X shape; the middle hinge part of the linkage member (3) is fixed to the headrest body (2), the upper end of the linkage member (3) is rotatably connected to the long slot holes on the headrest wing (1) on the same side, and the lower end of the linkage member (3) is connected to the inclined groove (91) of the chair back (9). 1) Sliding connection; the inclined groove (91) comprises a left inclined groove and a right inclined groove, the left inclined groove and the right inclined groove are both arranged longitudinally, the spacing between the left inclined groove and the right inclined groove increases from bottom to top, and the lower ends of the linkage members (3) are respectively arranged in the inclined grooves (91) on the same side; the seat back (9) is also provided with a gear slot (92), the middle part of the headrest body (2) is provided with a storage slot, and the storage slot is slidably sleeved with a gear fixing block (7), one end of the gear fixing block (7) extends into the gear slot (92) and is in contact with the gear fixing block (7). The gear slot (92) is slidably sleeved, the other end of the gear fixing block (7) is fixedly connected to a spring (10), and the other end of the spring (10) is fixedly connected to the inner wall of the storage slot; both sides of the middle part of the headrest body (2) are provided with sliding slots, and the sliding slots are slidably connected to a gear adjustment block (6), the bottom of the gear adjustment block (6) is pressed against the top of the gear fixing block (7), the top of the gear adjustment block (6) is fixedly connected to a headrest gear adjustment belt (4), and the top of the headrest gear adjustment belt (4) is fixedly connected to a pull ring (5).

2. The headrest opening adjustment device according to claim 1, characterized in that: Long openings are provided on both sides of the middle of the seat back (9), and a limiting rod is installed on the back of the headrest body (2). One end of the limiting rod passes through the long opening and is fixedly connected to the headrest fixing member (8), and is slidably connected to the inner wall of the long opening.

3. The headrest opening and adjusting device according to claim 1, characterized in that: A headrest fixing member (8) is fixedly mounted on the back of the headrest body (2), and the headrest fixing member (8) is used to connect the headrest body (2) and the chair back (9) and enable the headrest body (2) to move up and down along the chair back (9).

4. The headrest opening adjustment device according to claim 1, characterized in that: The headrest body (2) is hollow inside, and a slot hole is provided on each of the left and right sides of the headrest body (2). An insert block that matches the slot hole on the same side is provided on the headrest side wing (1), and the insert block is inserted into the slot hole and can slide left and right.

5. The headrest opening adjustment device according to claim 4, characterized in that: The long slot hole is provided in the middle section of the insert block, and the lower end of the insert block is provided with a receiving groove for receiving the upper end of the linkage member (3) and allowing the linkage member (3) to move left and right.

6. The headrest opening and adjusting device according to claim 1, characterized in that: The plurality of gear slots (92) are arranged transversely and overlap and intersect with the inclined slot (91).

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