Seat headrest

Abstract

The utility model provides a seat headrest, which belongs to the technical field of automobiles and comprises a headrest support rod, a seat cushion, a seat cushion and a seat cushion, the front wing is arranged on the base shell, a front-back overturning unit is arranged in the base shell and connected with the base shell, front-back overturning of the front wing relative to the base shell is achieved, and a height adjusting unit is arranged between the base shell and the headrest supporting rod; the front-back overturning unit comprises an overturning part fixed with the front wing, the overturning part can overturn front and back relative to the base shell, a latch part is arranged on the overturning part, a ratchet part is arranged in the base shell, and ratchets on the ratchet part are meshed with part of latches on the latch part; the height adjusting unit comprises a plurality of locking grooves formed in a seat headrest supporting rod, a locking part is arranged in the base shell, and the locking part can stretch into one locking groove to limit the relative position between the base shell and the headrest supporting rod; the headrest has the advantage that the use experience of a user is improved through front-back overturning adjustment and height adjustment of the headrest.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to a seat headrest. Background Art

[0002] The car seat headrest is a driving comfort configuration and safety protection product. It is installed on the top of the car seat backrest. It can support the head of the passenger while driving, provide a comfortable sitting feeling for the passenger, and reduce the injury to the passenger's neck in the event of an accident. The existing seat headrest is adjustable in height to adapt to the use of people of different heights, but the seat headrest cannot be adjusted in the front and back direction, which is not comfortable and affects the user experience. Utility Model Content

[0003] The utility model aims to solve the above problems in the prior art and proposes a seat headrest which can be adjusted in height and flipped forward and backward.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a seat headrest, comprising:

[0005] A headrest support rod, on which a base shell is disposed;

[0006] A front wing, which is arranged on a base shell, wherein a front-back flipping unit is arranged in the base shell and connected to the base shell, so that the front wing can be flipped back and forth relative to the base shell, and a height adjustment unit is arranged between the base shell and the headrest support rod;

[0007] A front-to-back flip unit, comprising a flip part fixed to the front wing, the flip part can be flipped back and forth relative to the base shell, and a latching tooth part is provided on the flip part, a ratchet part is provided inside the base shell, and the ratchet teeth on the ratchet part are meshed with some latching teeth on the latching tooth part;

[0008] The height adjustment unit comprises a plurality of locking grooves arranged on the seat headrest support rod, a locking part is arranged in the base shell, and the locking part can extend into one of the locking grooves to limit the relative position between the base shell and the headrest support rod.

[0009] In the above-mentioned seat headrest, a mounting frame is arranged in the base shell, the ratchet part is rotatably arranged on the mounting frame, and an omega spring is arranged between the ratchet part and the mounting frame, and the omega spring includes a first connecting part and a second connecting part, the first connecting part passes through the ratchet part and is rotatably connected to the ratchet part, and the second connecting part passes through the mounting frame and is rotatably connected to the mounting frame.

[0010] In the above-mentioned seat headrest, an unlocking section is provided on the latching tooth part along the front-to-back flipping direction of the flipping part, and when the ratchet on the ratchet part runs to the unlocking section, the ratchet and the latching tooth do not contact each other; and an unlocking block and a locking block are respectively provided at the front and rear ends of the latching tooth part.

[0011] In the above-mentioned seat headrest, an elastic member is arranged between the mounting frame and the flip portion.

[0012] In the above-mentioned seat headrest, a supporting portion is also fixedly provided on the flip portion, and the flip portion and the supporting portion are respectively fixed to two ends of the front wing.

[0013] In the above-mentioned seat headrest, the locking portion includes an abutting section and an expansion section, the abutting section abuts against the base shell, a transverse displacement portion is arranged in the base shell and connected with the expansion section, the expansion section is stuck in one of the locking grooves, and the linear movement of the transverse displacement portion can drive the expansion section to open and disengage from the locking groove.

[0014] In the above-mentioned seat headrest, there are two headrest support rods, each of which is provided with a plurality of locking grooves, and there are two locking parts, and the expansion sections on the two locking parts are connected to the transverse displacement part.

[0015] In the above-mentioned seat headrest, an adjustment operating portion is provided on the base shell, and the adjustment operating portion abuts against the lateral displacement portion.

[0016] In the above-mentioned seat headrest, a mounting plate is fixedly arranged in the base shell, a transverse displacement groove is formed on the mounting plate, and the transverse displacement portion is located in the transverse displacement groove and can move linearly in the transverse displacement groove.

[0017] In the above-mentioned seat headrest, a limiting groove is provided on the mounting plate, the locking ring is located in the limiting groove, and the expansion section of the locking portion can move in the limiting groove.

[0018] Compared with the prior art, in the utility model, a latching portion is provided on the flipping portion, and a ratchet portion is provided in the base shell. When the front wing is flipped, the ratchet on the ratchet portion meshes with part of the latching teeth on the latching portion to lock the flipping portion in the latching position, so that when the headrest is flipped forward and backward, it can be locked in multiple latching positions, so that the flipping adjustment angle and range are stable; and the locking between the locking portion and one of the locking grooves makes the relative position of the base shell relative to the headrest support rod fixed to the seat body adjustable, that is, the height position of the headrest is adjustable, and the front and rear flipping adjustment and height adjustment of the headrest enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the internal structure after removing the base shell;

[0021] Figure 3 It is one of the schematic diagrams of the internal structure of the seat headrest;

[0022] Figure 4 It is a schematic diagram of the assembly connection between the flip part and the supporting part;

[0023] Figure 5 It is one of the cross-sectional structural schematic diagrams of the front and rear flipping unit;

[0024] Figure 6 This is the second schematic diagram of the cross-sectional structure of the front and rear flip unit;

[0025] Figure 7 This is the second schematic diagram of the internal structure of the seat headrest;

[0026] Figure 8 is a schematic diagram of the connection between the height adjustment unit and the headrest support rod;

[0027] Fig. 9 Schematic diagram of the connection between the mounting plate and the headrest support rod.

[0028] In the figure, the headrest support rod 100; the base shell 200; the front wing 201; the flip part 300; the latch part 301; the mounting frame 302; the omega spring 303; the first connecting member 304; the second connecting member 305; the cross bar 306; the unlocking section 307; the unlocking block 308; the locking block 309; the elastic member 310; the supporting part 311; the ratchet part 312; the locking groove 400; the locking part 401; the abutting section 402; the expansion section 403; the lateral displacement part 404; the adjustment operation part 405; the mounting plate 406; and the limiting groove 407. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] like Figure 1-Figure 9 As shown, a seat headrest comprises:

[0032] A headrest support rod 100, on which a base shell 200 is disposed;

[0033] The front wing 201 is arranged on the base shell 200. A front-back flipping unit is arranged in the base shell 200 and connected to the base shell 200 to realize the front-back flipping of the front wing 201 relative to the base shell 200. A height adjustment unit is arranged between the base shell 200 and the headrest support rod 100.

[0034] The front-to-back flip unit includes a flip part 300 fixed to the front wing 201, and the flip part 300 can flip forward and backward relative to the base shell 200, and a latching tooth part 301 is provided on the flip part 300, and a ratchet part 312 is provided inside the base shell 200, and the ratchet teeth on the ratchet part 312 are meshed with some of the latch teeth on the latching tooth part 301;

[0035] The height adjustment unit includes a plurality of locking grooves 400 arranged on the headrest support rod 100 , a locking portion 401 is arranged in the base shell 200 , and the locking portion 401 can extend into one of the locking grooves 400 to limit the relative position between the base shell 200 and the headrest support rod 100 .

[0036] In this embodiment, a latching portion 301 is provided on the flipping portion 300, and a ratchet portion 312 is provided in the base shell 200. When the front wing 201 is flipped, the ratchet on the ratchet portion 312 engages with a part of the latching teeth on the latching portion 301, locking the flipping portion 300 in the latching position, so that when the headrest is flipped forward and backward, it can be locked in multiple latching positions, so that the flipping adjustment angle and range are stable; and the locking between the locking portion 401 and one of the locking grooves 400 makes the relative position of the base shell 200 relative to the headrest support rod 100 fixed to the seat body adjustable, that is, the height position of the headrest is adjustable, and the front and rear flipping adjustment and height adjustment of the headrest enhance the user experience.

[0037] Preferably, a mounting frame 302 is provided in the base shell 200, the ratchet portion 312 is rotatably provided on the mounting frame 302, and an omega spring 303 is provided between the ratchet portion 312 and the mounting frame 302, the omega spring 303 includes a first connecting portion and a second connecting portion, the first connecting portion passes through the ratchet portion 312 and is rotatably connected to the ratchet portion 312, and the second connecting portion passes through the mounting frame 302 and is rotatably connected to the mounting frame 302.

[0038] Specifically, a cross bar 306 is fixedly provided on the mounting frame 302, and a first connecting member 304 is hingedly provided on the ratchet portion 312. The first connecting member 304 is fixed to the cross bar 306 so that the ratchet portion 312 can rotate relative to the mounting frame 302, and a second connecting member 305 is provided on the flip portion 300. The second connecting member 305 is sleeved on the cross bar 306 and can rotate relative to the cross bar 306. The shape of the omega spring 303 is close to "Ω"; the first connecting member 304 includes two first splints, and the second connecting member 305 includes two second splints. The two first splints are located between the two second splints.

[0039] Further preferably, along the front and rear flipping direction of the flipping portion 300, an unlocking section 307 is provided on the latch portion 301, and when the ratchet on the ratchet portion 312 runs to the unlocking section 307, the ratchet and the latch are not in contact; and an unlocking block 308 and a locking block 309 are respectively provided at the front and rear ends of the latch portion 301.

[0040] In this embodiment, if Figure 5-Figure 6 As shown, at this time, the elastic force applied by the omega spring 303 to the latch portion 301 is directed downward. When the flip portion 300 flips upward, the flip portion 300 drives the front wing 201 to flip together. At this time, the latch on the latch portion 301 rotates upward by one position relative to the ratchet on the ratchet portion 312. At this time, under the elastic force of the omega spring 303, the ratchet locks the latch, and the flip portion 300 cannot flip downward under the action of the ratchet. As the flip portion 300 drives the front wing 201 to flip again, the latch on the latch portion 301 rotates upward by one position relative to the ratchet on the ratchet portion 312. By analogy, the flip part 300 can be continuously flipped upward according to the needs of the user until it is flipped to an angle that the user is satisfied with and is locked in the corresponding position. The flip part 300 and the front wing 201 remain at this angle to support the user's head. When resetting, the flip part 300 needs to be further flipped upward until the unlocking section 307 of the ratchet is disengaged from the locking tooth. As the flip part 300 continues to flip, the unlocking block 308 abuts against the ratchet part 312, driving the ratchet part 312 to move forward together until the direction of the omega spring 303 is flipped. At this time, the elastic force of the omega spring 303 is directed upward, and the ratchet part 312 remains separated from the locking tooth part 301 under the action of the elastic force of the omega spring 303. Afterwards, the flip portion 300 can be flipped downward, and the latch tooth portion 301 starts to reset. The locking block 309 on the latch tooth portion 301 abuts against the ratchet portion 312, driving the ratchet portion 312 to flip downward and reset until the direction of the omega spring 303 is flipped back to the initial position. At this time, the ratchet returns to the meshing state with the latch tooth, and then the front wing 201 can be flipped upward again to realize the front and rear flip adjustment of the headrest.

[0041] Further preferably, an elastic member 310 is disposed between the mounting frame 302 and the flip portion 300 .

[0042] In this embodiment, the elastic member 310 includes a torsion spring, one end of which is connected to the first connecting member 304, and the other end of which is connected to the second connecting member 305, to provide elastic force assistance when the flip part 300 flips downward and resets.

[0043] Further preferably, a supporting portion 311 is fixedly provided on the flip portion 300 , and the flip portion 300 and the supporting portion 311 are respectively fixed to two ends of the front wing 201 .

[0044] In this embodiment, the flip portion 300 is fixed to the upper portion of the front wing 201 , and the support portion 311 is provided to support the lower portion of the front wing 201 , thereby ensuring the stability of the front wing 201 .

[0045] Specifically, the support portion 311 includes an elliptical support ring, one end of the support ring is fixed to the flip portion 300 , and the other end of the support ring is fixed to the front wing 201 .

[0046] Preferably, the locking portion 401 includes an abutment section 402 and an expansion section 403. The abutment section 402 abuts against the base shell 200. A transverse displacement section 404 is provided in the base shell 200 and is connected to the expansion section 403. The expansion section 403 is stuck in one of the locking grooves 400. The linear movement of the transverse displacement section 404 can drive the expansion section 403 to open and disengage from the locking groove 400.

[0047] In this embodiment, the locking portion 401 is made of elastic material, and the expansion section 403 is stuck in the locking groove 400, which can limit the movement and adjustment of the headrest in the vertical direction. As the transverse portion 404 moves in the horizontal direction, the expansion section 403 is driven to open, and the expansion section 403 is moved from the locking groove 400 to complete the unlocking between the headrest support rod 100. When the expansion section 403 is reset, it can drive the transverse portion 404 to reset.

[0048] Further preferably, there are two headrest support rods 100 , each of which is provided with a plurality of locking grooves 400 , and there are two locking portions 401 , and the expansion sections 403 on the two locking portions 401 are both connected to the transverse displacement portion 404 .

[0049] In this embodiment, in order to ensure the installation stability of the headrest, two headrest support rods 100 are generally provided, and the unlocking and locking of the locking grooves 400 on the two headrest support rods 100 can be realized synchronously through a transverse portion 404 .

[0050] Further preferably, an adjustment operation portion 405 is provided on the base shell 200 , and the adjustment operation portion 405 abuts against the lateral displacement portion 404 .

[0051] In this embodiment, in order to facilitate the operation of the transverse displacement portion 404 from the outside, an adjustment button is provided on the base shell 200 as the adjustment operation portion 405. When the adjustment button is pressed, the transverse displacement portion 404 abutting against it moves linearly to complete the unlocking of the headrest support rod 100. When the transverse displacement portion 404 is reset under the elastic action of the expansion portion, the adjustment button will also be driven to reset.

[0052] Further preferably, a mounting plate 406 is fixedly provided in the base shell 200 , a transverse movement groove is provided on the mounting plate 406 , and the transverse movement portion 404 is located in the transverse movement groove and can move linearly in the transverse movement groove.

[0053] It is worth mentioning that mounting blocks are provided on both sides of the mounting plate 406 , and the headrest support rod 100 passes through the mounting blocks and can slide up and down relative to the mounting blocks.

[0054] In this embodiment, a transverse movement cavity is formed between the transverse movement groove opened on the mounting plate 406 and the base shell 200 , so that the transverse movement portion 404 can only move in a straight line, and the mounting frame 302 is located on the mounting plate 406 .

[0055] Further preferably, a limiting groove 407 is provided on the mounting plate 406 , the locking portion 401 is located in the limiting groove 407 , and the expansion section 403 of the locking portion 401 can move in the limiting groove 407 .

[0056] In this embodiment, the setting of the limiting groove 407 can prevent the locking portion 401 from shifting in the vertical direction when the expansion section 403 is elastically expanded.

[0057] Specifically, an abutment block is provided on the back of the limiting groove 407, the expansion section 403 and the abutment end are arranged around the headrest support rod 100, the abutment section 402 abuts against the abutment block, a transverse hole is provided on the transverse portion 404, and the expansion section 403 passes through the limiting groove 407 and extends into the transverse hole to abut against the transverse portion 404.

[0058] It should be noted that in the present utility model, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0059] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0060] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A seat headrest, characterized in that: include: A headrest support rod, on which a base shell is disposed; A front wing, which is arranged on a base shell, wherein a front-back flipping unit is arranged in the base shell and connected to the base shell, so that the front wing can be flipped back and forth relative to the base shell, and a height adjustment unit is arranged between the base shell and the headrest support rod; A front-to-back flip unit, comprising a flip part fixed to the front wing, the flip part can be flipped back and forth relative to the base shell, and a latching tooth part is provided on the flip part, a ratchet part is provided inside the base shell, and the ratchet teeth on the ratchet part are meshed with some latching teeth on the latching tooth part; The height adjustment unit comprises a plurality of locking grooves arranged on the seat headrest support rod, a locking part is arranged in the base shell, and the locking part can extend into one of the locking grooves to limit the relative position between the base shell and the headrest support rod.

2. A seat headrest according to claim 1, characterized in that: A mounting frame is arranged in the base shell, the ratchet part is rotatably arranged on the mounting frame, and an omega spring is arranged between the ratchet part and the mounting frame, the omega spring includes a first connecting part and a second connecting part, the first connecting part passes through the ratchet part and is rotatably connected to the ratchet part, and the second connecting part passes through the mounting frame and is rotatably connected to the mounting frame.

3. A seat headrest according to claim 2, characterized in that: An unlocking section is provided on the latching tooth part along the front and rear flipping direction of the flipping part. When the ratchet on the ratchet part runs to the unlocking section, the ratchet and the latching tooth are not in contact. An unlocking block and a locking block are respectively provided at the front and rear ends of the latching tooth part.

4. A seat headrest according to claim 2, characterized in that: An elastic member is arranged between the mounting frame and the flipping portion.

5. The seat headrest according to claim 1, characterized in that: A supporting portion is also fixedly arranged on the flip portion, and the flip portion and the supporting portion are respectively fixed to two ends of the front wing.

6. The seat headrest according to claim 1, characterized in that: The locking portion includes an abutment section and an expansion section, the abutment section abuts against the base shell, a transverse displacement portion is provided in the base shell and connected to the expansion section, the expansion section is stuck in one of the locking grooves, and the linear movement of the transverse displacement portion can drive the expansion section to open and disengage from the locking groove.

7. A seat headrest according to claim 6, characterized in that: There are two headrest support rods, each of which is provided with a plurality of locking grooves, and there are two locking parts, and the expansion sections on the two locking parts are connected to the transverse displacement part.

8. The seat headrest according to claim 6, characterized in that: The base shell is provided with an adjustment operation part, and the adjustment operation part abuts against the lateral displacement part.

9. The seat headrest according to claim 6, characterized in that: A mounting plate is fixedly arranged in the base shell, a transverse movement groove is opened on the mounting plate, and the transverse movement part is located in the transverse movement groove and can move linearly in the transverse movement groove.

10. A seat headrest according to claim 9, characterized in that: The mounting plate is provided with a limiting groove, the locking ring is located in the limiting groove, and the expansion section of the locking portion can move in the limiting groove.

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