Headrest for automobile seat

Abstract

A headrest for an automobile seat comprises a pillowcase, a pillow body, a pillow frame and a pillow rod, the pillow frame can be rotatably connected to an upper cross rod of the pillow rod, a reset torsion spring and a limiting block are arranged on the pillow rod in a sleeved mode, one end of the reset torsion spring is connected with the limiting block, the other end of the reset torsion spring is connected with the pillow frame, a button is arranged on the pillow body, and the button is arranged on the pillow body. The button abuts against a transmission piece on the pillow frame through a transmission rod, the transmission piece is connected with the pillow frame through a first reset structure, the transmission piece abuts against one end of the unlocking piece, the unlocking piece is rotatably connected to a transverse shaft of the pillow frame and can be buckled with the limiting block, and the unlocking piece is connected with the pillow frame through a second reset structure. The utility model has the advantages that the button controls the buckling and mutual separation of the unlocking piece and the limiting block through the transmission rod and the transmission piece, the transmission piece is in direct contact with the unlocking piece, the structure is compact, the transmission efficiency is high, the unlocking effect is good, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile headrests, in particular to a headrest used for automobile seats. Background Art

[0002] There is a Chinese invention patent application with application number CN201910403220.1 and titled "Foldable Automobile Seat Headrest Frame", which discloses a foldable automobile seat headrest frame, wherein the headrest rod is in an "n" shape, and the top of the "n" shape is bent forward, the horizontal rod of the headrest rod is clamped between the main base frame and the rear pressure block, and the headrest base frame can rotate around the horizontal rod of the headrest rod; the unlocking bracket and the rotating locking plate are respectively rotatably installed on the rear side of the main base frame, the unlocking bracket includes an integrally injection-molded first leg, a second leg, a connecting rod and a connecting pin, the connecting pin is inserted into the pin hole of the rotating locking plate and can slide left and right in the pin hole, the rotating locking plate is rotatably installed through the unlocking shaft, the fixed locking plate is fixedly sleeved on the horizontal rod of the headrest rod, and the locking head of the rotating locking plate is inserted into the corresponding locking notch on the fixed locking plate to achieve locking, and the inner end of the unlocking button horizontally passes through the right side wall of the main base frame and then rests on the first leg. The new linkage unlocking mechanism is simple in structure, reliable in function, and low in manufacturing cost, which can avoid unlocking failure during use. However, the unlocking of the seat headrest frame requires a two-stage transmission, in which the unlocking bracket and the rotating locking plate are connected by a connecting rod. Both ends of the connecting rod require a large range of motion, which is prone to rust or stress fatigue after long-term use, affecting the unlocking effect. Therefore, the structure of the car seat headrest frame needs to be further improved. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a headrest for automobile seats with a compact inner frame structure, good unlocking transmission effect and long service life in view of the above-mentioned existing technical status.

[0004] The technical solution adopted by the utility model to solve the above technical problems is as follows: the headrest for a car seat comprises a pillowcase, a pillow body, a pillow frame and a pillow rod, the pillow frame is rotatably connected to the upper cross bar of the pillow rod, a reset torsion spring and a limit block are sleeved on the pillow rod, one end of the reset torsion spring is connected to the limit block, and the other end of the reset torsion spring is connected to the pillow frame, and the utility model is characterized in that: a button is arranged on the pillow body, the button contacts with a transmission member on the pillow frame through a transmission rod, the transmission member is connected to the pillow frame through a first reset structure, the transmission member contacts with one end of an unlocking member, the unlocking member is rotatably connected to the horizontal axis of the pillow frame and can be buckled with the limit block, the unlocking member is connected to the pillow frame through a second reset structure, when the button is pressed, the transmission rod pushes the transmission member, the transmission member pushes the unlocking member, the unlocking member is disengaged from the limit block, and when the button is released, the transmission member and the unlocking member are reset respectively.

[0005] As an improvement, the pillow frame may preferably be provided with a transmission rod installation groove, and the transmission rod can be slidably connected in the transmission rod installation groove.

[0006] As a further improvement, the pillow frame may preferably include an outer frame and an inner frame, the inner frame being embedded in the outer frame, the transmission rod mounting groove being arranged on the outer frame, the transmission rod passing through the side wall of the inner frame, and the transmission member, unlocking member, limit block, reset torsion spring and transverse axis being all arranged in the inner frame.

[0007] As a further improvement, the transmission member may preferably be a transmission block, a transmission block convex portion is provided at the bottom of the transmission block, and the transmission rod contacts the transmission block convex portion.

[0008] As a further improvement, the first reset structure may preferably be a first torsion spring, one end of the first torsion spring is connected to the transmission block, and the other end of the first torsion spring is connected to the inner frame.

[0009] As a further improvement, the unlocking member may preferably be an unlocking block, the middle part of which is connected to the horizontal axis, one end of which is in contact with the transmission block, the other end of which is provided with an unlocking block convex portion, and a limiting block groove which can be snapped into the unlocking block convex portion is provided on the limiting block corresponding to the unlocking block convex portion.

[0010] As a further improvement, the second reset structure may preferably be a second torsion spring sleeved on the transverse axis, one end of the second torsion spring is connected to the unlocking block, and the other end of the second torsion spring is connected to the inner frame.

[0011] As an improvement, the button may preferably include a button shell, a button body and a button spring, wherein the button spring is sleeved on the button body, the button body is plugged into the button shell, and the end of the button body contacts the transmission rod.

[0012] As an improvement, a cross bar may be preferably provided on the inner frame, and a limit block convex portion is provided on the limit block, and the limit block convex portion can contact the cross bar.

[0013] As an improvement, a positioning strip may be preferably provided at the bottom of the pillow rod, on which pillow rod positioning grooves are distributed, with a gap left between the pillow rod positioning grooves and the corresponding pillow rods, and a welding rod sandwiched in the gap that can fix the pillow rod and the corresponding pillow rod positioning grooves after melting.

[0014] Compared with the prior art, the advantages of the utility model are: the button controls the snapping and mutual disengagement of the unlocking member and the limit block through the transmission rod and the transmission member, the transmission member is in direct contact with the unlocking member, the structure is compact, the transmission efficiency is high, the unlocking effect is good, and the service life is long; the pillow frame adopts the structure of an outer frame and an inner frame, which saves materials, and the inner frame can be disassembled and replaced, which facilitates the maintenance of the headrest and reduces the replacement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0016] Figure 2 for Figure 1 The structural breakdown diagram of

[0017] Figure 3 yes Figure 1 The structural decomposition diagram after removing the positioning strip;

[0018] Figure 4 yes Figure 3 The structural decomposition diagram after removing the pillowcase and pillow body;

[0019] Figure 5 yes Figure 4 Further structural decomposition diagram of ;

[0020] Figure 6 yes Figure 5 A bottom view of the unexploded inner frame and pillow rod connection structure;

[0021] Figure 7 yes Figure 6 Sectional view along line AA;

[0022] Figure 8 yes Figure 6 The cross section along line BB;

[0023] Fig. 9 yes Figure 6 The structural breakdown diagram of

[0024] Fig.10 yes Fig. 9 A stereogram from another angle. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 10As shown, the headrest for a car seat of this embodiment comprises a pillowcase 1, a pillow body 2, a pillow frame 3 and a pillow rod 4, wherein the pillow frame 3 is rotatably connected to an upper cross bar 41 of the pillow rod 4, a reset torsion spring 42 and a limit block 43 are sleeved on the pillow rod 4, one end of the reset torsion spring 42 is connected to the limit block 43, and the other end of the reset torsion spring 42 is connected to the pillow frame 3, a button 5 is arranged on the pillow body 2, and the button 5 contacts a transmission member 6 on the pillow frame 3 through a transmission rod 51, and the transmission The transmission member 6 is connected to the pillow frame 3 through the first reset structure, the transmission member 6 contacts one end of the unlocking member 7, the unlocking member 7 is rotatably connected to the transverse axis 31 of the pillow frame 3 and can be locked with the limit block 43, the unlocking member 7 is connected to the pillow frame 3 through the second reset structure, when the button 5 is pressed, the transmission rod 51 pushes the transmission member 6, the transmission member 6 pushes the unlocking member 7, the unlocking member 7 is disengaged from the limit block 43, when the button 5 is released, the transmission member 6 and the unlocking member 7 are reset respectively. The pillow frame 3 is provided with a transmission rod installation groove 32, and the transmission rod 51 can be slidably connected in the transmission rod installation groove 32.

[0027] The pillow frame 3 includes an outer frame and an inner frame 30, wherein the inner frame 30 is embedded in the outer frame, the transmission rod mounting groove 32 is arranged on the outer frame, the transmission rod 51 passes through the side wall of the inner frame 30, and the transmission member 6, the unlocking member 7, the limit block 43, the reset torsion spring 42, and the horizontal axis 31 are all arranged in the inner frame 30. The transmission member 6 is a transmission block, and a transmission block convex portion 61 is arranged at the bottom of the transmission block 6, and the transmission rod 51 contacts the transmission block convex portion 61. The first reset structure is a first torsion spring 62, one end of which is connected to the transmission block, and the other end of which is connected to the inner frame 30.

[0028] The unlocking member 7 is an unlocking block, the middle part of which is connected to the horizontal shaft 31, one end of which contacts the transmission block, and the other end of which is provided with an unlocking block protrusion 71, and a limiting block groove 431 capable of inserting the unlocking block protrusion 71 is provided on the limiting block 43 corresponding to the unlocking block protrusion 71. The second reset structure is a second torsion spring 72 sleeved on the horizontal shaft 31, one end of which is connected to the unlocking block, and the other end of which is connected to the inner frame 30.

[0029] The button 5 includes a button shell, a button body 52 and a button spring 53. The button spring 53 is sleeved on the button body 52. ​​The button body 52 is plugged into the button shell. The end of the button body 52 contacts the transmission rod 51. A cross bar 33 is provided on the inner frame 30. A limit block convex portion 432 is provided on the limit block 43. The limit block convex portion 432 can contact the cross bar 33. A positioning strip 8 is provided at the bottom of the pillow rod 4. The positioning strip 8 is provided with pillow rod positioning grooves 81. A gap is left between the pillow rod positioning grooves 81 and the corresponding pillow rod 4. A welding rod 82 is sandwiched in the gap to fix the pillow rod 4 and the corresponding pillow rod positioning grooves 81 after melting.

[0030] Working principle: the button pushes the transmission rod, the transmission rod pushes the transmission part to rotate, the transmission part presses the unlocking part, the unlocking part disengages from the limit block, and the pillow frame rotates and folds under the action of the reset torsion spring; the pillow frame is manually pushed to reset, the unlocking part is re-engaged with the limit block and repositioned.

Claims

1. A headrest for a car seat, comprising a pillowcase (1), a pillow body (2), a pillow frame (3) and a pillow rod (4), wherein the pillow frame (3) is rotatably connected to an upper cross bar (41) of the pillow rod (4), a return torsion spring (42) and a limit block (43) are sleeved on the pillow rod (4), one end of the return torsion spring (42) is connected to the limit block (43), and the other end of the return torsion spring (42) is connected to the pillow frame (3), characterized in that: A button (5) is provided on the pillow body (2). The button (5) contacts a transmission member (6) on the pillow frame (3) through a transmission rod (51). The transmission member (6) is connected to the pillow frame (3) through a first reset structure. The transmission member (6) contacts one end of an unlocking member (7). The unlocking member (7) is rotatably connected to a transverse axis (31) of the pillow frame (3) and can be locked with a limit block (43). The unlocking member (7) is connected to the pillow frame (3) through a second reset structure. When the button (5) is pressed, the transmission rod (51) pushes the transmission member (6), and the transmission member (6) pushes the unlocking member (7). The unlocking member (7) is disengaged from the limit block (43). When the button (5) is released, the transmission member (6) and the unlocking member (7) are reset respectively.

2. The headrest according to claim 1, characterized in that: The pillow frame (3) is provided with a transmission rod installation groove (32), and the transmission rod (51) can be slidably connected in the transmission rod installation groove (32).

3. The headrest according to claim 2, characterized in that: The pillow frame (3) comprises an outer frame and an inner frame (30), the inner frame (30) is embedded in the outer frame, the transmission rod mounting groove (32) is arranged on the outer frame, the transmission rod (51) passes through the side wall of the inner frame (30), and the transmission member (6), the unlocking member (7), the limit block (43), the reset torsion spring (42), and the transverse axis (31) are all arranged in the inner frame (30).

4. The headrest according to claim 3, characterized in that: The transmission member (6) is a transmission block, a transmission block convex portion (61) is provided at the bottom of the transmission block, and the transmission rod (51) contacts the transmission block convex portion (61).

5. The headrest according to claim 4, characterized in that: The first reset structure is a first torsion spring (62), one end of the first torsion spring (62) is connected to the transmission block, and the other end of the first torsion spring (62) is connected to the inner frame (30).

6. The headrest according to claim 4, characterized in that: The unlocking member (7) is an unlocking block, the middle part of which is connected to the transverse shaft (31), one end of which contacts the transmission block, the other end of which is provided with an unlocking block convex portion (71), and a limiting block groove (431) capable of being inserted into the unlocking block convex portion (71) is provided on a limiting block (43) corresponding to the unlocking block convex portion (71).

7. The headrest according to claim 6, characterized in that: The second reset structure is a second torsion spring (72) sleeved on the transverse axis (31), one end of the second torsion spring (72) is connected to the unlocking block, and the other end of the second torsion spring (72) is connected to the inner frame (30).

8. The headrest according to any one of claims 1 to 7, characterized in that: The button (5) comprises a button shell, a button body (52) and a button spring (53); the button spring (53) is sleeved on the button body (52); the button body (52) is plugged into the button shell; and the end of the button body (52) contacts the transmission rod (51).

9. The headrest according to any one of claims 3 to 7, characterized in that: A cross bar (33) is arranged on the inner frame (30), and a limit block convex portion (432) is arranged on the limit block (43), and the limit block convex portion (432) can contact the cross bar (33).

10. The headrest according to any one of claims 1 to 7, characterized in that: A positioning strip (8) is provided at the bottom of the pillow rod (4), and pillow rod positioning grooves (81) are distributed on the positioning strip (8). A gap is left between the pillow rod positioning groove (81) and the corresponding pillow rod (4), and a welding rod (82) is sandwiched in the gap to fix the pillow rod (4) and the corresponding pillow rod positioning groove (81) after melting.

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