Seat device with magnetically fixed headrest

Abstract

A seat device with a magnetically fixed headrest comprises a seat unit, a first magnetic unit, a fixing unit and a second magnetic unit, the seat unit comprises a sitting main body, a chair back main body and a headrest main body, the first magnetic unit comprises a first magnetic body with a first magnetic surface, and the fixing unit comprises a second magnetic body with a second magnetic surface. The fixing unit comprises a fixing main body and a positioning structure, the positioning structure extends outwards from the side edge of the fixing main body, the second magnetic attraction unit comprises a second magnetic attraction body with a second magnetic attraction surface, the first magnetic attraction body and the second magnetic attraction body magnetically attract each other, the first magnetic attraction surface is larger than the second magnetic attraction surface, and the second magnetic attraction surface is larger than the first magnetic attraction surface. The second magnetic attraction body can be attracted to any position on the first magnetic attraction face through the second magnetic attraction face. Therefore, the seat is stable in structure and difficult to damage, and a user can adjust the position of the headrest in a large range.

Description

Technical Field

[0001] This utility model relates to a seating device, and more particularly to a seating device with a magnetically fixed headrest. Background Technology

[0002] Modern people spend long hours using computers, which means sitting in chairs for extended periods. Standard office chairs (including gaming chairs) provide comfortable support, helping users maintain good posture and reduce fatigue and discomfort during long work sessions. Most office chairs have headrests that support the cervical spine, reducing muscle tension and soreness, as well as pressure on the shoulders and upper back, providing comfort and health support so users can maintain good posture and reduce fatigue even during prolonged use.

[0003] Some chairs have headrest supports on the backrest with adjustable height using a locking mechanism to allow users to find the right position. However, the exposed headrest support structure can affect the appearance. Other chairs have concealed headrest adjustment mechanisms, which also allow users to adjust the headrest position.

[0004] US12042059B2 describes a head support assembly with multiple magnets to allow the headrest to be adjusted to two positions. However, the magnets are locked within the head support assembly, making them easy for the user to disassemble, and the overall structure is not stable. Furthermore, the multiple magnets are spaced apart horizontally, limiting the adjustment position of the headrest and making it particularly difficult to move the headrest left or right. Utility Model Content

[0005] In view of this, the main objective of this utility model is to provide a seat device with a magnetically fixed headrest that makes it easier for users to adjust the position of the headrest over a wide range.

[0006] The present invention relates to a seat device with a magnetically fixed headrest, comprising a seat unit, a first magnetic attraction unit, a fixing unit, and a second magnetic attraction unit.

[0007] The seat unit includes a seating body, a backrest body connected to the seating body, and a headrest body detachably connected to the backrest body.

[0008] The first magnetic unit includes a first magnetic body disposed on the main body of the chair back and having a first magnetic surface.

[0009] The fixing unit includes a fixing body disposed on the headrest body and a positioning structure disposed on the side of the fixing body, the positioning structure extending outward from the side of the fixing body.

[0010] The second magnetic unit includes a second magnetic body disposed on the fixed body and having a second magnetic surface. The first magnetic body and the second magnetic body magnetically attract each other. The first magnetic surface is larger than the second magnetic surface, so that the second magnetic body can attract any position on the first magnetic surface with the second magnetic surface.

[0011] In one embodiment, the fixing body has a surrounding wall, a bottom wall connected to the bottom of the surrounding wall, and a side block connected to the top of the surrounding wall, and the second magnetic body is housed in the space defined by the surrounding wall, the bottom wall and the side block.

[0012] In one embodiment, the second magnetic accumulator has a lower magnetic structure and an upper magnetic structure connected to the lower magnetic structure, the upper magnetic structure being accommodated in an opening defined by the side stop.

[0013] In one embodiment, the fixing body further has a fixing surface disposed on the side block, the second magnetic surface is the surface of the upper magnetic structure, and the fixing surface is connected to the second magnetic surface and located on the same plane.

[0014] In one embodiment, the headrest body has a headrest surface and a headrest opening disposed on the headrest surface, the fixing body is disposed in the headrest opening, and the fixing surface is connected to the headrest surface and located on the same plane.

[0015] In one embodiment, the distance between the two sides of the lower magnetic structure is greater than the distance between the two sides of the upper magnetic structure, so that the side of the second magnetic attractor presents a stepped structure.

[0016] In one embodiment, the upper magnetic structure and the lower magnetic structure are circular sheets.

[0017] In one embodiment, the seat unit further includes a cover sleeve disposed on the main body of the seat back, the cover sleeve covering the first magnetic body.

[0018] In one embodiment, the positioning structure is disposed inside the headrest body, and the positioning structure is provided with a plurality of perforations.

[0019] In one embodiment, the positioning structure further includes a plurality of positioning pieces, which are disposed on the sides of the fixing body, and a plurality of through holes are provided on the plurality of positioning pieces.

[0020] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various embodiments of this utility model. Specifically, the features of the claims of this utility model can be combined with each other in any way.

[0021] The beneficial effects of this utility model are that the first magnetic surface is larger than the second magnetic surface, so that the second magnetic body can be attracted to any position on the first magnetic surface by the second magnetic surface. This allows the user to directly adjust the position of the headrest body. The fixing surface is connected to the second magnetic surface and is located on the same plane. The fixing surface is connected to the headrest surface and is located on the same plane. This not only makes the back of the headrest body flat, but also allows the second magnetic body to be set outward as much as possible to attract the first magnetic body with the greatest magnetic force. The perforations on the plurality of positioning pieces of the positioning structure allow foam material to flow in. After the foam material hardens, the fixing unit is firmly fixed in the headrest body, making the structure more stable and less prone to damage. Attached Figure Description

[0022] Figure 1 This is a front view schematic diagram of a first embodiment of the seat device with a magnetically fixed headrest of this utility model;

[0023] Figure 2 This is an exploded three-dimensional structural diagram of a headrest body in the first embodiment;

[0024] Figure 3 This is a top view of a fixed unit in the first embodiment;

[0025] Figure 4 This is a side cross-sectional view of the fixing unit in the first embodiment;

[0026] Figure 5 This is a three-dimensional schematic diagram of the first magnetic accumulator and the headrest body in the first embodiment;

[0027] Figure 6 This is a partial perspective view of a second embodiment of the seat device with a magnetically fixed headrest of this utility model; and

[0028] Figure 7 This is a three-dimensional schematic diagram of the headrest body of the second embodiment.

[0029] Explanation of markings in the diagram:

[0030] 3: Seat unit; 31: Seating body; 32: Backrest body; 33: Headrest body; 331: Headrest surface;

[0031] 332: Headrest opening; 34: Covering cover; 4: First magnetic unit; 41: First magnetic body; 411: First magnetic surface;

[0032] 5: Fixed unit; 51: Fixed body; 511: Surrounding wall; 512: Bottom wall; 513: Side block; 514: Fixed surface;

[0033] 52: Positioning structure; 521: Positioning piece; 522: Perforation; 6: Second magnetic unit; 61: Second magnetic body;

[0034] 611: Second magnetic attraction surface; 612: Lower magnetic structure; 613: Upper magnetic structure. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0036] Please see Figure 1 , Figure 2 and Figure 3 This is a first embodiment of a seat device with a magnetically fixed headrest according to the present invention. The seat device with a magnetically fixed headrest includes a seat unit 3, a first magnetic attraction unit 4, a fixing unit 5, and a second magnetic attraction unit 6.

[0037] The seat unit 3 includes a seating body 31, a backrest body 32 connected to the seating body 31, a headrest body 33 detachably connected to the backrest body 32, and a cover 34 disposed on the backrest body 32.

[0038] The first magnetic unit 4 includes a first magnetic body 41 disposed on the chair back body 32 and having a first magnetic surface 411.

[0039] The fixing unit 5 includes a fixing body 51 disposed on the headrest body 33, and a positioning structure 52 disposed on the side of the fixing body 51, the positioning structure 52 extending outward from the side of the fixing body 51.

[0040] The second magnetic unit 6 includes a second magnetic body 61 disposed on the fixed body 51 and having a second magnetic surface 611.

[0041] The first magnetic 41 and the second magnetic 61 are magnetically attracted to each other. In the first embodiment, the first magnetic 41 and the second magnetic 61 are both magnets. The first magnetic 41 and the second magnetic 61 are magnetically attracted to each other. In actual implementation, the first magnetic 41 or the second magnetic 61 can also be made of a metal that can be magnetically attracted (such as iron), and should not be limited thereto.

[0042] Please see Figure 1 The seat unit 3 is a general office chair or gaming chair. In actual implementation, other chairs with headrests can also be used, and this should not be a limitation. The cover 34 is a fabric structure. In actual implementation, the cover 34 can also be made of leather, plastic, etc., and this should not be a limitation.

[0043] The first magnetic clasp 41 is disposed on the main body of the chair back 32, positioned approximately at the occupant's head. This allows the height of the main body of the chair back 32 to be increased, thereby increasing the height distance of the first magnetic clasp 41. The cover 34 covers the main body of the chair back 32 and also the first magnetic clasp 41 to provide a comfortable seating experience. The second magnetic clasp 61 can magnetically attract the first magnetic clasp 41 through the cover 34.

[0044] Please see Figure 2 The headrest body 33 has a headrest surface 331 and a headrest opening 332 disposed on the headrest surface 331. The fixing body 51 is disposed in the headrest opening 332. The headrest surface 331 of the headrest body 33 is flat, but not limited thereto. The headrest opening 332 is located in the middle of the headrest surface 331.

[0045] See also Figure 3 The positioning structure 52 has a plurality of (two or more) positioning pieces 521 and a plurality of through holes 522 disposed on the plurality of positioning pieces 521. The positioning structure 52 is provided with a plurality of through holes 522. The plurality of positioning pieces 521 are disposed on the sides of the fixing body 51. In the first embodiment, the positioning pieces 521 on the upper and lower sides of the fixing body 51 are square pieces, each square piece is provided with two through holes 522. The positioning pieces 521 on the left and right sides of the fixing body 51 are arc-shaped pieces, each arc-shaped piece is provided with four through holes 522. In actual implementation, the positioning structure 52 can also use other structures, and should not be limited to the example of this preferred embodiment.

[0046] The positioning structure 52 is disposed inside the headrest body 33, which is also filled with a hardening foam material. During the manufacturing of the headrest body 33, the positioning structure 52 is placed in a mold, and then the foam material is filled into the mold. Once the foam material in the mold hardens, it forms the headrest body 33. During filling, the foam material enters the perforations 522 of the positioning structure 52. After the foam material hardens, it tightly clamps the positioning structure 52, fixing the fixing unit 5 into the headrest body 33. The positioning structure 52 also provides structural rigidity to the hardened foam material. In practice, the headrest body 33 can also be made of other materials and should not be limited thereto. In some embodiments, the back of the headrest body 33 is formed from a hardening foam material, while the front and sides of the headrest body 33 use an additional elastic cushioning material.

[0047] See Figure 2 , Figure 3 ,and Figure 4The fixing body 51 has a surrounding wall 511, a bottom wall 512 connected to the bottom of the surrounding wall 511, and a side stop 513 connected to the top of the surrounding wall 511. The second magnetic 61 is accommodated in the space defined by the surrounding wall 511, the bottom wall 512, and the side stop 513. The positioning structure 52 extends laterally from the side of the surrounding wall 511. In some embodiments, the second magnetic 61 is adhesively attached to the fixing body 51. In some embodiments, the fixing body 51 is made of elastic rubber to allow the second magnetic 61 to be inserted into the space defined by the surrounding wall 511, the bottom wall 512, and the side stop 513.

[0048] In the fixed body 51, the surrounding wall 511 is formed in a circle, the bottom wall 512 is connected to the bottom end of the surrounding wall 511 and closes the bottom end of the surrounding wall 511, the side block 513 is connected to the top end of the surrounding wall 511 and extends inward to form a circular opening structure, the opening shape of the headrest opening 332 and the outer ring shape of the side block 513 are matched to each other so that the side block 513 can be tightly set in the headrest opening 332.

[0049] In this first embodiment, the second magnetic accumulator 61 has a lower magnetic structure 612 and an upper magnetic structure 613 connected to the lower magnetic structure 612. The upper magnetic structure 613 and the lower magnetic structure 612 are circular sheets, wherein the centers of the upper magnetic structure 613 and the lower magnetic structure 612 are on the same axis. In actual implementation, the second magnetic accumulator 61 can also use other shapes and structures, and should not be limited thereto.

[0050] The distance between the two sides of the lower magnetic structure 612 is greater than the distance between the two sides of the upper magnetic structure 613, so that the side of the second magnetic accumulator 61 presents a stepped structure. The lower magnetic structure 612 is a large circular plate, and the upper magnetic structure 613 is a small circular plate. The upper magnetic structure 613 is housed in the opening defined by the side block 513, and the lower magnetic structure 612 is housed in the internal space of the surrounding wall 511. The space defined by the second magnetic accumulator 61 and the surrounding wall 511, the bottom wall 512 and the side block 513 are tightly fitted, so that the fixing body 51 tightly covers the side and bottom of the second magnetic accumulator 61. The top surface of the upper magnetic structure 613 is the second magnetic surface 611, which is exposed to the outside and is not covered by the fixing body 51.

[0051] See Figure 1 , Figure 4 ,and Figure 5The fixing body 51 also has a fixing surface 514 disposed on the side block 513. The second magnetic surface 611 is the surface of the upper magnetic structure 613. The fixing surface 514 is connected to the second magnetic surface 611 and is located on the same plane. The fixing surface 514 is connected to the headrest surface 331 and is located on the same plane. Therefore, the fixing surface 514, the second magnetic surface 611 and the headrest surface 331 present the same plane. The first magnetic body 41 is a square plate and the second magnetic surface 611 is a plane. When the headrest body 33 is placed on the cover 34 outside the first magnetic body 41 with the headrest surface 331, the second magnetic surface 611 can adhere to the cover 34 and generate the maximum magnetic attraction between it and the first magnetic body 41.

[0052] In some embodiments, the first magnetic surface 411 may also have curvature, and the planes formed by the fixed surface 514, the second magnetic surface 611 and the headrest surface 331 may also have curvature. The two curved planes cooperate with each other, so that the first magnetic body 41 and the first magnetic body 41 have the maximum magnetic attraction force.

[0053] The first magnetic surface 411 is larger than the second magnetic surface 611, so that the second magnetic body 61 can be attracted to any position on the first magnetic surface 411 by the second magnetic surface 611. This allows the user to adjust the up-down and left-right positions of the headrest body 33 on the chair back body 32. After the position is adjusted, the first magnetic body 41 and the second magnetic body 61 attract each other to fix the position of the headrest body 33.

[0054] Please see Figure 6 ,and Figure 7 This is a second embodiment of the seat device with a magnetically fixed headrest of the present invention. The second embodiment is largely the same as the first embodiment, and the similarities will not be described in detail here. The difference is that in the second embodiment, the fixing body 51 in the above scheme has a rectangular structure as a whole. The distance between the left and right sides of the fixing body 51 is greater than the distance between the top and bottom sides. The distance between the left and right sides of the headrest body 33 is greater than the distance between the top and bottom sides.

[0055] The surrounding wall 511 is rectangular in shape. The side block 513 is constructed at the top of the surrounding wall 511 and forms a rectangular opening. The positioning structure 52 surrounds the outside of the surrounding wall 511 and protrudes outward. A positioning piece 521 and a plurality of through holes 522 are respectively provided on the left and right sides of the surrounding wall 511. The second magnetic 61 in the fixing unit 5 has a rectangular structure and is tightly covered by the fixing body 51. In actual implementation, the fixing body 51 can also take other shapes and should not be limited thereto.

[0056] The headrest surface 331, the fixed surface 514, and the second magnetic surface 611 are located on the same plane, so that the second magnetic surface 611 is closest to the surface of the headrest body 33 without protruding, so that the first magnetic body 41 and the second magnetic body 61 can generate the maximum magnetic attraction force.

[0057] As can be seen from the above description, the new type of seat device with a magnetically fixed headrest does indeed have the following effects:

[0058] I. Concealed Design:

[0059] The cover 34 covers the backrest body 32 and the first magnetic body 41, which not only provides a comfortable riding experience, but also eliminates the need for a separate headrest support structure and headrest height adjustment structure in the seat unit 3. Therefore, this new invention features a hidden headrest adjustment design.

[0060] II. Not easily damaged:

[0061] The back of the headrest body 33 is formed of a hardening foam material. During the manufacturing process of the headrest body 33, the foam material enters the perforation 522 of the positioning structure 52. After the foam material hardens, it will tightly lock the positioning structure 52 and fix the fixing unit 5 in the headrest body 33. The fixing unit 5 is not fixed by clamps or screws and is difficult to remove by normal means. It can be regarded as an irremovable or permanently installed component. Therefore, this utility model has the advantage of not being easily damaged.

[0062] III. Adjustment range of headrest position:

[0063] The first magnetic surface 411 is a large square surface, and the second magnetic surface 611 is a small circular surface. The left-right distance and the top-bottom distance of the first magnetic surface 411 are both greater than the structural width of the second magnetic surface 611. In addition, there is only one second magnetic body 61 in this invention. The second magnetic body 61 can be attached to any position on the first magnetic surface 411. The user can freely adjust the position of the headrest body 33. Therefore, this invention can improve the position adjustment range of the headrest.

[0064] In summary, the first magnetic surface 411 is larger than the second magnetic surface 611, allowing the second magnetic body 61 to adhere to any position on the first magnetic surface 411, providing the user with the freedom to adjust the position of the headrest body 33. The fixing surface 514, the second magnetic surface 611, and the headrest surface 331 are located on the same plane, allowing the second magnetic body 61 to be positioned outwards without protruding, enabling the first magnetic body 41 and the second magnetic body 61 to make closer contact and generate the maximum magnetic attraction. The foaming material used in the manufacturing process of the headrest body 33 can cover the positioning piece 521 and pass through the perforation 522. After the foaming material hardens, it firmly fixes the fixing unit 5, making it difficult to remove by normal means. Therefore, the purpose of this utility model can indeed be achieved.

[0065] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

[0066] The scope of protection of this utility model is not limited to the specific embodiments described above, but also includes any combination of the technical features in the above specific embodiments to form the implementation scheme.

Claims

1. A seating device having a magnetically fixed headrest, characterized by, A seat unit includes a seat body, a back body connected to the seat body, and a headrest body detachably connected to the back body. A first magnetic unit includes a first magnetic body disposed on the back body and having a first magnetic surface. A fixing unit includes a fixing body disposed on the headrest body, and a positioning structure disposed on a side of the fixing body and extending outward from the side of the fixing body. A second magnetic unit includes a second magnetic body disposed on the fixing body and having a second magnetic surface, the first magnetic body and the second magnetic body being magnetically attracted to each other, the first magnetic surface being larger than the second magnetic surface, so that the second magnetic body can be attracted to any position on the first magnetic surface with the second magnetic surface. The fixing body has a surrounding wall, a bottom wall connected to a bottom of the surrounding wall, and a side block connected to a top of the surrounding wall, the second magnetic body being accommodated in a space defined by the surrounding wall, the bottom wall, and the side block.

2. The seat device having a magnetically fixed headrest according to claim 1, wherein The second magnetic body has a lower magnetic structure and an upper magnetic structure connected to the lower magnetic structure, the upper magnetic structure being accommodated in an opening defined by the side block.

3. The seat arrangement having a magnetically fixed headrest of claim 2, wherein, The fixing body further has a fixing surface disposed on the side block, the second magnetic surface being a surface of the upper magnetic structure, the fixing surface being connected to the second magnetic surface and located in the same plane.

4. The seat arrangement having a magnetically fixed headrest of claim 3, wherein, The headrest body has a headrest surface and a headrest opening disposed on the headrest surface, the fixing body being disposed in the headrest opening, the fixing surface being connected to the headrest surface and located in the same plane.

5. The seat arrangement having a magnetically fixed headrest of claim 4, wherein, The lower magnetic structure has a distance between two sides thereof, and the upper magnetic structure has a distance between two sides thereof, the distance between the two sides of the lower magnetic structure being greater than the distance between the two sides of the upper magnetic structure, so that the side edges of the second magnetic body have a stepped structure.

6. The seat arrangement having a magnetically fixed headrest of claim 3, wherein, The upper magnetic structure and the lower magnetic structure are circular plates.

7. The seat arrangement having a magnetically fixed headrest of claim 3, wherein, The seat unit further includes a cover disposed on the back body, the cover covering the first magnetic body.

8. The seat apparatus having a magnetically fixed headrest according to claim 1, wherein The positioning structure is disposed inside the headrest body, and a plurality of through holes are disposed on the positioning structure.

9. The seat apparatus having a magnetically fixed headrest according to claim 1, wherein The positioning structure further has a plurality of positioning plates, the plurality of positioning plates being disposed on the side of the fixing body, and the plurality of through holes being disposed on the plurality of positioning plates.

10. The seat arrangement having a magnetically fixed headrest of claim 9, wherein, ​

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