Adjustable headrest structure of seat

Abstract

The utility model provides an adjustable headrest structure of a seat. The adjustable headrest structure comprises a mounting plate and a headrest main body, a first hinge seat is arranged on the mounting plate, a groove is formed in the headrest main body, a second hinge seat is movably arranged in the groove in a limiting manner, and a connecting rod is hinged between the hinge end of the first hinge seat and the hinge end of the second hinge seat; the arc beads on the two sides of the end face of the end, opposite to the hinged end, of the second hinged base abut against the interiors of the concave arc grooves in the two sides of the concave face of the groove correspondingly. A user can pull the headrest body upwards, the multiple concave arc grooves vertically formed in the two sides of the concave face move upwards relative to the arc beads on the two sides of the end face of the second hinge base, and therefore the concave arc grooves in the lower positions of the two sides of the concave face abut against the arc beads on the two sides of the end face of the second hinge base. The headrest body moves upwards relative to the second hinge seat, and then the headrest body ascends to support the head of a user. And the headrest main body meets the multi-angle adjustment requirement of the user, so that the headrest main body can support the head of the user more comfortably.

Description

Technical Field

[0001] The utility model relates to the technical field of seat accessories, in particular to an adjustable headrest structure for a seat. Background Art

[0002] The headrest on a seat is a comfort configuration item, and its main function is to provide a comfortable support for users. For example, the headrest on a car seat can provide additional head support for drivers and passengers, reduce fatigue during long-term driving or riding, especially during long-distance trips. The headrest on a car seat can help adjust the head angle, avoid compression of the jugular vein, thus reducing fatigue and being beneficial to safe driving.

[0003] Currently, the headrest on a seat usually does not have the functions of height adjustment and forward / backward tilt adjustment. Therefore, users cannot adjust the height of the headrest on the seat according to their own height for better adaptation to support the head, and users cannot adjust the headrest on the seat to tilt forward or backward according to their own needs for better adaptation to support the head. Thus, the headrest structure on the seat needs to be improved. Content of the Utility Model

[0004] The utility model aims to provide an adjustable headrest structure for a seat to solve the problem that the headrest on the seat usually does not have the functions of height adjustment and forward / backward tilt adjustment as mentioned in the above background art. Therefore, users cannot adjust the height of the headrest on the seat according to their own height for better adaptation to support the head, and users cannot adjust the headrest on the seat to tilt forward or backward according to their own needs for better adaptation to support the head. Thus, the headrest structure on the seat needs to be improved.

[0005] The technical solution adopted by the utility model to solve the technical problem is as follows: an adjustable headrest structure for a seat, including a mounting plate and a headrest body; a first hinge seat is provided on the mounting plate, a groove is provided on the headrest body, a second hinge seat is limited and movable in the groove, a connecting rod is hinged between the hinge end of the first hinge seat and the hinge end of the second hinge seat; arc beads are respectively provided on both sides of the end face of the second hinge seat opposite to the hinge end, a plurality of concave arc grooves arranged vertically are respectively opened on both sides of the concave surface of the groove, and the arc beads on both sides of the end face of the second hinge seat opposite to the hinge end respectively abut against the concave arc grooves on both sides of the concave surface of the groove.

[0006] In some embodiments, first polygonal round blocks are respectively provided on both sides of one end of the connecting rod, second polygonal round blocks are respectively provided on both sides of the other end of the connecting rod, first polygonal round holes are respectively provided on both sides of the hinged end of the first hinge seat, second polygonal round holes are respectively provided on both sides of the hinged end of the second hinge seat, the first polygonal round blocks on both sides of one end of the connecting rod respectively abut against the first polygonal round holes on both sides of the hinged end of the first hinge seat, and the second polygonal round blocks on both sides of the other end of the connecting rod respectively abut against the second polygonal round holes on both sides of the hinged end of the second hinge seat.

[0007] In some embodiments, guide bars are respectively provided on both sides of the end face of the second hinge seat opposite to the hinged end, guide grooves are respectively formed on both concave sides of the groove, and the guide bars on both sides of the end face of the second hinge seat opposite to the hinged end are respectively slidably located in the guide grooves on both concave sides of the groove.

[0008] In some embodiments, limiting walls are respectively provided on the edges of both sides of the end face of the second hinge seat opposite to the hinged end, limiting grooves are respectively formed on both sides of the headrest main body corresponding to the groove, and the limiting walls on the edges of both sides of the end face of the second hinge seat opposite to the hinged end are respectively slidably located in the limiting grooves on both sides of the groove.

[0009] In some embodiments, the headrest main body includes a bottom plate and a headrest body, the headrest body is connected to the front part of the bottom plate, and the groove is located on the back of the bottom plate.

[0010] In some embodiments, a through hole is formed through the middle of the bottom plate, and an adjusting plate is detachably connected to the front part of the bottom plate. The adjusting plate corresponds to the through hole so as to form the groove on the back of the bottom plate and so as to form the concave surface of the groove on one surface of the adjusting plate.

[0011] In some embodiments, the adjusting plate is screwed to the front part of the bottom plate.

[0012] In some embodiments, a plurality of screw holes are formed through the mounting plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] In the present utility model, a first hinge seat is provided on an installation plate, a groove is provided on a headrest main body, a second hinge seat is limited and movable in the groove, and a connecting rod is hinged between the hinge ends of the first hinge seat and the second hinge seat; arc beads are respectively provided on both sides of the end surface of the second hinge seat opposite to the hinge end, and a plurality of concave arc grooves arranged vertically are respectively opened on both sides of the concave surface of the groove. The arc beads on both sides of the end surface of the second hinge seat opposite to the hinge end are respectively abutted in the concave arc grooves on both sides of the concave surface of the groove, so that the present utility model can realize the adjustment of the up-and-down height of the headrest main body, and can also realize the forward or backward tilt adjustment of the headrest main body, so as to make the headrest main body meet the multi-angle adjustment needs of users and support the user's head more comfortably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an adjustable headrest structure for a seat;

[0016] Figure 2 It is a schematic diagram of the split structure of an adjustable headrest structure for a seat;

[0017] Figure 3 It is a schematic diagram of the split structure among the first hinge seat, the second hinge seat and the connecting rod of an adjustable headrest structure for a seat;

[0018] Figure 4 It is a schematic diagram of the structure of the installation plate of an adjustable headrest structure for a seat;

[0019] Figure 5 It is a schematic diagram of the structure of the headrest main body of an adjustable headrest structure for a seat from one side view;

[0020] Figure 6 It is a schematic diagram of the structure of the headrest main body of an adjustable headrest structure for a seat from the other side view;

[0021] Figure 7 It is an exploded structure schematic diagram of an adjustable headrest structure for a seat from one side view;

[0022] Figure 8 It is an exploded structure schematic diagram of an adjustable headrest structure for a seat from the other side view.

[0023] Description of the reference numerals:

[0024] 100, Adjustable headrest structure; 10, mounting plate; 101, screw hole; 20, headrest main body; 201, bottom plate; 2011, groove; 20111, concave surface; 201111, concave arc groove; 201112, guide groove; 2012, limit groove; 2013, through hole; 2014, adjusting plate; 202, headrest body; 301, first hinge seat; 3011, first polygonal round hole; 302, second hinge seat; 3021, limit wall; 3022, guide bar; 3023, arc bead; 3024, second polygonal round hole; 303, connecting rod; 3031, first polygonal round block; 3032, second polygonal round block. Detailed implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0026] In addition, in the present invention, the descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features.

[0027] Please refer to Figures 1 to 8 As shown, the present invention provides the following technical solution: An adjustable headrest structure 100 for a seat, including a mounting plate 10 and a headrest main body 20; a first hinge seat 301 is provided on the mounting plate 10, a groove 2011 is provided on the headrest main body 20, a second hinge seat 302 is limited and movable in the groove 2011, and a connecting rod 303 is hinged between the hinged ends of the first hinge seat 301 and the second hinge seat 302; arc beads 3023 are respectively provided on both sides of the end surface of the second hinge seat 302 at the end opposite to the hinged end, a plurality of concave arc grooves 201111 arranged vertically are respectively opened on both sides of the concave surface 20111 of the groove 2011, and the arc beads 3023 on both sides of the end surface of the second hinge seat 302 at the end opposite to the hinged end are respectively abutted in the concave arc grooves 201111 on both sides of the concave surface 20111 of the groove 2011.

[0028] In the adjustable headrest structure 100 of the seat provided in this embodiment, when it is necessary to install the adjustable headrest structure 100 at the top of the seat backrest, the user can fix the mounting plate 10 to the top of the seat backrest with bolts. Then, when the user sits on the seat, the head can be supported by the adjustable headrest structure 100 located at the top of the seat backrest. When the user needs to adjust the headrest main body 20 to lean forward to support the head, the user can pull the headrest main body 20 forward. At this time, the second hinge seat 302 on the back of the headrest main body 20 rotates upward relative to the connecting rod 303, and the connecting rod 303 rotates downward relative to the first hinge seat 301 on the mounting plate 10. Thus, the second hinge seat 302 is forced to lean forward to support the headrest main body 20 to lean forward, and then the headrest main body 20 leans forward to support the user's head, meeting the user's usage requirements. When the user needs to adjust the headrest main body 20 to lean backward to support the head, the user can push the headrest main body 20 backward. At this time, the second hinge seat 302 on the back of the headrest main body 20 rotates downward relative to the connecting rod 303, and the connecting rod 303 rotates upward relative to the first hinge seat 301 on the mounting plate 10. Thus, the second hinge seat 302 is forced to lean backward to support the headrest main body 20 to lean backward, and then the headrest main body 20 leans backward to support the user's head, meeting the user's usage requirements. When the user needs to adjust the rising height of the headrest main body 20, the user can pull the headrest main body 20 upward. At this time, several concave arc grooves 201111 arranged vertically on both sides of the concave surface 20111 move upward relative to the arc beads 3023 on both sides of the end face of the second hinge seat 302. Thus, the concave arc grooves 201111 with a lower position on both sides of the concave surface 20111 can abut against the arc beads 3023 on both sides of the end face of the second hinge seat 302 to realize the upward movement of the headrest main body 20 relative to the second hinge seat 302, so that the second hinge seat 302 supports the headrest main body 20 to rise. Then, the headrest main body 20 rises to support the user's head, meeting the user's usability requirements. When the user needs to adjust the descending height of the headrest main body 20, the user can push the headrest main body 20 downward. At this time, several concave arc grooves 201111 arranged vertically on both sides of the concave surface 20111 move downward relative to the arc beads 3023 on both sides of the end face of the second hinge seat 302. Thus, the concave arc grooves 201111 with a higher position on both sides of the concave surface 20111 abut against the arc beads 3023 on both sides of the end face of the second hinge seat 302 to realize the downward movement of the headrest main body 20 relative to the second hinge seat 302, so that the second hinge seat 302 supports the headrest main body 20 to descend. Then, the headrest main body 20 descends to support the user's head, meeting the user's usability requirements. In the present utility model, the up and down height adjustment of the headrest main body 20 can be realized, and the forward or backward inclination adjustment of the headrest main body 20 can be realized. Thus, the headrest main body 20 meets the user's multi-angle adjustment requirements, making the headrest main body 20 support the user's head more comfortably.

[0029] Please refer to with emphasisFigure 3 and Figure 4 As shown in and

[0030] , in some embodiments, first polygonal round blocks 3031 are respectively provided on both sides of one end of the connecting rod 303, second polygonal round blocks 3032 are respectively provided on both sides of the other end of the connecting rod 303, first polygonal round holes 3011 are respectively provided on both sides of the hinged end of the first hinge seat 301, and second polygonal round holes 3024 are respectively provided on both sides of the hinged end of the second hinge seat 302. The first polygonal round blocks 3031 on both sides of one end of the connecting rod 303 respectively abut against the first polygonal round holes 3011 on both sides of the hinged end of the first hinge seat 301, and the second polygonal round blocks 3032 on both sides of the other end of the connecting rod 303 respectively abut against the second polygonal round holes 3024 on both sides of the hinged end of the second hinge seat 302.

[0030] During specific implementation: when the user pulls the headrest main body 20 forward to lean forward, the first polygonal round blocks 3031 on both sides of one end of the connecting rod 303 can be respectively stressed and rotate downward in the first polygonal round holes 3011 on both sides of the hinged end of the first hinge seat 301, and the second polygonal round holes 3024 on both sides of the hinged end of the second hinge seat 302 can be respectively stressed and rotate upward on the second polygonal round blocks 3032 on both sides of the other end of the connecting rod 303. Thus, when the user stops pulling the headrest main body 20 forward to lean forward, the first polygonal round blocks 3031 on both sides of one end of the connecting rod 303 can respectively be inertia-tightened against the first polygonal round holes 3011 on both sides of the hinged end of the first hinge seat 301 due to the lack of force, and the second polygonal round holes 3024 on both sides of the hinged end of the second hinge seat 302 can respectively be inertia-tightened against the second polygonal round blocks 3032 on both sides of the other end of the connecting rod 303 due to the lack of force, thereby realizing self-locking of the forward tilt angle of the headrest main body 20 after adjustment. When the user pushes the headrest main body 20 backward to lean backward, the first polygonal round blocks 3031 on both sides of one end of the connecting rod 303 can be respectively stressed and rotate upward in the first polygonal round holes 3011 on both sides of the hinged end of the first hinge seat 301, and the second polygonal round holes 3024 on both sides of the hinged end of the second hinge seat 302 can be respectively stressed and rotate downward on the second polygonal round blocks 3032 on both sides of the other end of the connecting rod 303. Thus, when the user stops pushing the headrest main body 20 backward to lean backward, the first polygonal round blocks 3031 on both sides of one end of the connecting rod 303 can respectively be inertia-tightened against the first polygonal round holes 3011 on both sides of the hinged end of the first hinge seat 301 due to the lack of force, and the second polygonal round holes 3024 on both sides of the hinged end of the second hinge seat 302 can respectively be inertia-tightened against the second polygonal round blocks 3032 on both sides of the other end of the connecting rod 303 due to the lack of force, thereby realizing self-locking of the backward tilt angle of the headrest main body 20 after adjustment. Through such a setting, through the cooperation between the first hinge seat 301, the connecting rod 303 and the second hinge seat 302, the forward tilt angle or the backward tilt angle of the headrest main body 20 can be self-locked, so that the headrest main body 20 can stably support the user's head after the adjustment of the angle.

[0031] Please refer to particularly Figures 4 to 6 As shown, in some embodiments, on both sides of the end face of the second hinge seat 302 at the end opposite to the hinge end, there are respectively provided guide bars 3022. On both sides of the concave surface 20111 of the groove 2011, there are respectively provided guide grooves 201112. The guide bars 3022 on both sides of the end face of the second hinge seat 302 at the end opposite to the hinge end are respectively slidably located in the guide grooves 201112 on both sides of the concave surface 20111 of the groove 2011.

[0032] During specific implementation: when the user adjusts the height of the headrest main body 20 to move the headrest main body 20 up or down relative to the second hinge seat 302, the guide bars 3022 on both sides of the end face of the second hinge seat 302 can respectively slide in the guide grooves 201112 on both sides of the concave surface 20111, so as to realize that the second hinge seat 302 provides a guide for the headrest main body 20 to move up and down linearly, so that the arc beads 3023 on both sides of the end face of the second hinge seat 302 can accurately correspond to and abut against different concave arc grooves 201111 on both sides of the concave surface 20111. Through such a setting, the second hinge seat 302 can provide a guide for the headrest main body 20 to move up and down linearly.

[0033] Please refer to particularly Figures 4 to 6 As shown, in some embodiments, on both sides of the edge of the end face of the second hinge seat 302 at the end opposite to the hinge end, there are respectively provided limiting walls 3021. On both sides of the headrest main body 20 corresponding to the groove 2011, there are respectively provided limiting grooves 2012. The limiting walls 3021 on both sides of the edge of the end face of the second hinge seat 302 at the end opposite to the hinge end are respectively slidably located in the limiting grooves 2012 on both sides of the groove 2011.

[0034] During specific implementation: when the user adjusts the height of the headrest main body 20 to move the headrest main body 20 up or down relative to the second hinge seat 302, the limiting walls 3021 on both sides of the edge of the end face of the second hinge seat 302 can respectively slide in the limiting grooves 2012 on both sides of the concave surface 20111. Since the limiting grooves 2012 on both sides of the concave surface 20111 are both located inside the headrest main body 20, the second hinge seat 302 can be respectively limited to slide in the limiting grooves 2012 on both sides of the concave surface 20111 through the limiting walls 3021 on both sides of the edge, so as to prevent the second hinge seat 302 from detaching from the groove 2011 on the back of the headrest main body 20. Through such a setting, the groove 2011 on the back of the headrest main body 20 can limit the second hinge seat 302 to move therein.

[0035] Please refer to particularly Figures 6 to 8As shown, in some embodiments, the headrest main body 20 includes a bottom plate 201 and a headrest body 202. The headrest body 202 is connected to the front of the bottom plate 201, and a groove 2011 is located on the back of the bottom plate 201.

[0036] During specific implementation: The bottom plate 201 of the headrest main body 20 is used to form the groove 2011 to limit the second hinge seat 302 to move within the groove 2011. The headrest body 202 is used to contact the user's head, and the headrest body 202 is made of an elastic material such as silicone or sponge. Through such a setting, the headrest main body 20 can contact the user's head through the headrest body 202.

[0037] Please refer to Figures 6 to 8 As shown, in some embodiments, a through hole 2013 is formed through the middle of the bottom plate 201, and an adjusting plate 2014 is detachably connected to the front of the bottom plate 201. The adjusting plate 2014 corresponds to the through hole 2013 to form the groove 2011 on the back of the bottom plate 201 and to form the concave surface 20111 of the groove 2011 on one side of the adjusting plate 2014.

[0038] During specific implementation: When assembling the adjustable headrest structure 100, the end of the second hinge seat 302 opposite to the hinge end can be placed in the through hole 2013, and then the adjusting plate 2014 is connected to the front of the bottom plate 201. Thus, the adjusting plate 2014 at the front of the bottom plate 201 corresponds to the through hole 2013 in the middle of the bottom plate 201 to form the groove 2011 on the back of the bottom plate 201, and a concave surface 20111 of the groove 2011 is formed on one side of the bottom plate 201. Then, the groove 2011 can limit the second hinge seat 302 to move within it. Through such a setting, the adjustable headrest structure 100 is convenient to assemble.

[0039] Please refer to Figure 7 As shown, in some embodiments, the adjusting plate 2014 is screwed to the front of the bottom plate 201.

[0040] During specific implementation: The adjusting plate 2014 is screwed to the front of the bottom plate 201, so that the user can disassemble and assemble the adjusting plate 2014 on the bottom plate 201 by screwing on or off the screws. Through such a setting, the adjusting plate 2014 can be detachably connected to the front of the bottom plate 201.

[0041] Please refer to Figure 1 As shown, in some embodiments, a plurality of screw holes 101 are formed through the mounting plate 10.

[0042] During specific implementation: When it is necessary to install the adjustable headrest structure 100 at the top of the back of the seat, bolts can be inserted into the screw holes 101 on the mounting plate 10 for bolt fixation with the top of the back of the seat. Through such a setting, the adjustable headrest structure 100 can be bolt-mounted at the top of the back of the seat for the user's head to rest against.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.

[0044] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable headrest structure for a seat, characterized in that: It comprises a mounting plate and a headrest body; a first hinge seat is arranged on the mounting plate, a groove is arranged on the headrest body, a second hinge seat is movable in a limited position in the groove, a connecting rod is hinged between the hinge end of the first hinge seat and the hinge end of the second hinge seat; arc beads are respectively arranged on both sides of the end surface of the second hinge seat at the opposite end of the hinge end, a plurality of concave arc grooves arranged vertically are respectively opened on both sides of the concave surface of the groove, and the arc beads on both sides of the end surface of the second hinge seat at the opposite end of the hinge end respectively abut against the concave arc grooves on both sides of the concave surface of the groove.

2. The adjustable headrest structure of the seat according to claim 1, characterized in that: A first polygonal round block is provided on both sides of one end of the connecting rod, and a second polygonal round block is provided on both sides of the other end of the connecting rod. A first polygonal circular hole is provided on both sides of the hinge end of the first hinge seat, and a second polygonal circular hole is provided on both sides of the hinge end of the second hinge seat. The first polygonal round blocks on both sides of one end of the connecting rod respectively abut against the first polygonal circular holes on both sides of the hinge end of the first hinge seat, and the second polygonal round blocks on both sides of the other end of the connecting rod respectively abut against the second polygonal circular holes on both sides of the hinge end of the second hinge seat.

3. The adjustable headrest structure of a seat according to claim 1, characterized in that: The second hinged seat is provided with guide strips on both sides of the end surface opposite to the hinged end, and the concave surface of the groove is provided with guide grooves on both sides. The guide strips on both sides of the end surface of the second hinged seat opposite to the hinged end can be slidably located in the guide grooves on both sides of the concave surface of the groove.

4. The adjustable headrest structure of a seat according to claim 1, characterized in that: The second hinged seat is located at the opposite end of the hinged end and has limiting walls on both sides of the edge. The headrest body is provided with limiting grooves on both sides corresponding to the groove. The limiting walls on both sides of the edge of the end surface of the second hinged seat is located at the opposite end of the hinged end and can be slidably located in the limiting grooves on both sides of the groove.

5. The adjustable headrest structure of a seat according to claim 1, characterized in that: The headrest body comprises a bottom plate and a headrest body, wherein the headrest body is connected to the front part of the bottom plate, and the groove is located at the back of the bottom plate.

6. The adjustable headrest structure of a seat according to claim 5, characterized in that: A through hole is formed in the middle of the bottom plate, and an adjustment plate is detachably connected to the front of the bottom plate. The adjustment plate corresponds to the through hole so that the groove is formed on the back of the bottom plate and the concave surface of the groove is formed on one side of the adjustment plate.

7. The adjustable headrest structure of a seat according to claim 6, characterized in that: The adjusting plate is screwed to the front of the base plate.

8. The adjustable headrest structure of a seat according to claim 1, characterized in that: A plurality of screw holes are formed through the mounting plate.

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