Seat headrest capable of being quickly disassembled and assembled and office chair

Abstract

The utility model relates to the technical field of chairs, and particularly discloses a seat headrest capable of being quickly disassembled and assembled and an office chair. The seat headrest capable of being rapidly disassembled and assembled comprises a headrest body, an adjusting part connected with the headrest body, a main body part installed on a seat main body, a sliding connecting part used for connecting the adjusting part and the main body part, and a limiting part used for limiting the relative position between the adjusting part and the main body part. The limiting part comprises an installation limiting sleeve piece, and the installation limiting sleeve piece comprises a limiting buckle arranged on the main body part and a first limiting block which is arranged on the adjusting part and matched with the limiting buckle. The automobile seat has the beneficial effects that the steps of installing the main body part on the seat main body and installing the adjusting part on the headrest by adopting screws and the like can be completed in advance by a manufacturer, and a consumer only needs to realize quick installation between the adjusting part and the main body part through the limiting part, so that the assembly operation is more convenient; meanwhile, under the structure, a consumer can conveniently disassemble the headrest, and the seat can be conveniently stored.

Description

Technical Field

[0001] The utility model relates to the technical field of chairs, in particular to a quick-disassembly and assembly seat headrest and an office chair. Background Art

[0002] The office chairs currently on the market generally include casters, chair legs, gas rods, chassis, seat, armrests, backrest connection (angle bracket), backrest and headrest, etc. The overall size of the office chair is large and the shape is irregular. Therefore, in order to facilitate the transportation of office chairs, the processing manufacturers usually make a preliminary combination of some parts, and the rest of the parts are assembled by consumers after they obtain the products.

[0003] After the office chair is initially assembled in the factory, the headrest is usually kept separate from the chair back and other parts to facilitate the transportation of the office chair, which means that consumers need to assemble the office chair themselves after obtaining it. However, many office chairs currently on the market require consumers to install the headrest on the chair back using screws and other structures, making the installation steps of the headrest not quick and convenient enough. Moreover, under this structure, manufacturers usually need to provide consumers with more screws and other parts than required to avoid missing or damaged parts, and to ensure smooth installation for consumers. This model also increases the production costs of manufacturers. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a seat headrest that can be quickly disassembled and assembled. After the manufacturer completes the initial assembly of the office chair, the consumer can quickly install the headrest on the chair back after obtaining the office chair, and the operation is convenient and quick. At the same time, the structure also makes it convenient for the consumer to quickly remove the headrest, which is conducive to the storage of the office chair and other tasks.

[0005] The utility model is realized through the following technical solutions.

[0006] A quick-disassembly and assembly seat headrest, characterized in that it includes a headrest body, an adjustment part connected to the headrest body, a main body part installed on the seat body, a sliding connection part for connecting the adjustment part and the main body part, and a limiting part for limiting the relative position between the adjustment part and the main body part; wherein the limiting part includes an installation limiting kit, the installation limiting kit includes a limiting buckle arranged on the main body part and a first limiting block arranged on the adjustment part and adapted to the limiting buckle; a second limiting block is also arranged on the adjustment part for contacting with the main body part, a sliding limiting path is formed between the first limiting block and the second limiting block, and the first limiting block is placed on the sliding limiting path at an end away from the headrest body.

[0007] Under this structure, when the manufacturer performs the preliminary assembly of the office chair, the adjustment part and the headrest body can be assembled to form a headrest assembly, and the body part can be installed on the seat body, usually on the chair back. After the consumer connects the adjustment part in the headrest assembly with the body part, the headrest body is installed on the chair back, i.e., the seat body, and the assembly of the seat is completed.

[0008] When the consumer obtains the office chair, the adjustment part and the main body are first connected by means of a sliding connection part. For example, the sliding connection part may adopt a structure in which a groove and a convex block cooperate with each other, and when the two cooperate, they can limit the relative movement of the adjustment part and the main body in the horizontal direction, but still ensure the relative sliding between the main body and the adjustment part in the vertical direction.

[0009] The adjusting part is moved in the vertical direction until the limit buckle contacts the limit block, and then the limit buckle can be toggled to separate the two, and the adjusting part can continue to move relative to the main body in the vertical direction, so that the main body can enter the sliding limit path. Then, the force applied to the limit buckle is stopped, so that when the adjusting part and the main body slide relative to each other in the vertical direction, the first limit block contacts the limit buckle and the second limit block contacts the main body itself at both ends of the sliding limit path, thereby preventing the main body from escaping from the sliding limit path and causing the main body and the adjusting part to separate.

[0010] When disassembling the headrest body, it is only necessary to move the adjustment part until the limit buckle contacts the first limit block, and then move the limit buckle to move the two away from each other. At this time, the movement of the adjustment part is no longer restricted, and the main body can be separated from the sliding limit path from the end away from the headrest body on the sliding limit path, so that the headrest body is separated from the seat body including the seat back, and the headrest body is disassembled. Under this structure, screws and other parts are no longer needed in the overall disassembly and assembly process of the headrest body.

[0011] As a further improvement of the present invention, a guiding inclined surface structure is provided on the end of the first limit block away from the sliding limit path, and a resisting surface structure is provided on the end close to the sliding limit path. With this structure, there is no need to move the limit buckle when installing the headrest, which further improves the convenience of installation.

[0012] As a further improvement of the present invention, a pressure guide block is connected to the limit buckle, and an anti-slip structure is provided on the pressure guide block to facilitate consumers to disassemble the headrest.

[0013] As a further improvement of the present invention, the sliding connection part includes a connection block provided on the main body part and a connection slide groove provided on the adjustment part, and the connection slide groove is adapted to the connection sliders provided on both sides of the connection block. The sliding connection part adopts a structure in which the slide groove and the slider cooperate, so that the main body part can slide into the sliding restriction path, making the overall installation of the headrest smoother.

[0014] As a further improvement of the present invention, the connecting slider is provided with a plurality of fixed protrusions, and the connecting slider contacts the front and rear walls of the inner wall of the connecting slide groove through the fixed protrusions. Under this structure, when the main body and the adjustment part slide relative to each other, the sliding friction between the two is mainly caused by the fixed protrusions and the inner wall. Since the contact area between the fixed protrusions and the inner wall is small, the sliding friction is also relatively small, which can facilitate consumers to adjust the position of the headrest.

[0015] As a further improvement of the present invention, the limiting part further includes a sliding limiting kit, which includes a limiting convex part arranged on the connecting block and a limiting concave part group arranged on the adjusting part, and the limiting concave part group includes a plurality of limiting concave parts arranged along the sliding limiting path. When the consumer moves the headrest, the limiting concave part can guide the limiting convex part, so that the limiting convex part falls into the nearby limiting concave part to form an engagement, thereby fixing the position of the headrest.

[0016] As a further improvement of the present invention, an elastic pressure structure is provided on the connecting slider, and a pressure surface that contacts the front wall in the inner wall of the connecting slot is provided on the elastic pressure structure. When the connecting slider is embedded in the connecting slot, the inner wall of the connecting slot includes a front wall, a side wall and a rear wall that contact the connecting slider, wherein the front wall refers to the inner wall far away from the position of the limiting recess among the three inner walls, the rear wall is close to the position of the limiting recess, or even on the same plane, and the side wall connects the rear wall and the front wall. Therefore, the elastic pressure structure can drive the limiting protrusion and the limiting recess to fit tightly together, forming a snap-fit ​​effect; at the same time, it ensures the tight fit between the fixed protrusion and the inner wall, and can strengthen the static friction between the fixed protrusion and the inner wall, further ensuring that the headrest will not move easily when no force is applied to adjust the position.

[0017] As a further improvement of the present invention, the connection block is provided with two symmetrically arranged limiting protrusions, and the adjustment portion is provided with two symmetrically arranged limiting recess groups.

[0018] As a further improvement of the present invention, the limiting convex part is a limiting ball. Under this structure, the force required by the consumer to move the headrest is small, and the wear of the limiting convex part itself is small, which is conducive to the long-term use of the headrest.

[0019] An office chair is provided with any one of the above-mentioned quick-detachable seat headrests.

[0020] The beneficial effect of the utility model is that during the installation of the headrest, the preliminary assembly steps such as connecting the main body with the seat body and the adjustment part with the headrest using screws and other mounting parts can be completed in advance by the manufacturer, and the consumer only needs to use the limiter to quickly install the adjustment part and the main body, which is more convenient for the overall operation and improves the consumer's experience. At the same time, under this structure, it is also convenient for consumers to disassemble the headrest and store the seat. For the manufacturer, the steps involving screw installation are no longer performed by the consumer, so the manufacturer no longer needs to provide consumers with screws and other parts that exceed the required amount, reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings are provided for combining with the preferred implementation cases of the present invention to help understand the purpose and advantages of the present invention, wherein:

[0022] Figure 1 A schematic side view of a seat body with a quick-detachable seat headrest structure installed on the backrest;

[0023] Figure 2 It is a schematic diagram of the structure of the main body from the first perspective;

[0024] Figure 3 It is a schematic diagram of the structure of the main body and the connecting block from a front view;

[0025] Figure 4 It is a schematic diagram of the front viewing angle structure of the adjustment part;

[0026] Figure 5 This is a schematic diagram of the structure from the first viewing angle after the main body and the adjustment part are installed;

[0027] Figure 6 This is a schematic diagram of the front view structure after the main body and the adjustment part are installed;

[0028] Figure 7 for Figure 6 The cross-sectional view of the structure at perspective XX and perspective YY after the middle main body and the adjustment part are installed;

[0029] Figure 8 for Figure 6 A cross-sectional view of the structure from a YY perspective after the middle main body and the adjustment part are initially connected;

[0030] Fig. 9 This is a schematic diagram of the viewing angle structure after the main body and the adjustment part are installed;

[0031] Fig.10 for Fig. 9 Cross-sectional view of the structure from perspective ZZ after the middle main body and adjustment part are installed.

[0032] in, Figure 7 The XX perspective is used to show the engagement relationship between the limiting protrusion and the limiting recess; the YY perspective is used to show the positional relationship between the limiting buckle and the first limiting block when the main body is placed in the sliding limiting path. Figure 8 It is used to show the positional relationship between the limit buckle and the first limit block when the connecting slider is placed outside the sliding limit path. Fig.10 It is used to show the positional relationship between the connecting slider and the connecting groove when the connecting slider is embedded in the connecting groove. DETAILED DESCRIPTION

[0033] The utility model is further described in detail below based on the accompanying drawings and implementation cases.

[0034] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0035] Embodiment 1:

[0036] A quick disassembly and assembly seat headrest comprises a headrest body A, an adjustment part 1, a main body 2, a sliding connection part 3 and a limit part 4. After the manufacturer completes the preliminary assembly of the seat, the adjustment part 1 is installed on the headrest body A to form a headrest assembly, and the main body 2 is installed on the seat body B. Figure 1 As shown, the main body 2 is usually installed on the backrest of the seat. Therefore, when the consumer assembles the headrest, he only needs to install and connect the adjustment part 1 in the headrest to be installed with the main body 2.

[0037] The sliding connection part 3 is used for the installation connection between the main body 2 and the adjustment part 1. In this embodiment, the sliding connection part 3 can adopt a structure in which a slide groove or a slide rail cooperates with a slider, etc. This structure is a common structure in the prior art, so it will not be described in detail in this embodiment.

[0038] During the installation of the headrest, it is first necessary to form a preliminary connection between the main body 2 and the adjustment part 1 through the sliding connection part 3. In this embodiment, the sliding connection structure preferably adopts a combination structure of a connecting slide groove 302 and a connecting block 301.

[0039] like Figure 5 As shown, the adjusting portion 1 is provided with two connecting grooves 302; Figure 2~3As shown, a connecting block 301 is provided on the main body 2 , and connecting sliders 301 - 1 are provided on both sides of the connecting block 301 .

[0040] like Figure 5 As shown, the bottom of the connecting slot 302 on the adjusting part 1 is provided with an opening for accommodating the connecting slider 301-1 to slide and fit therein. Only when a part of the connecting slider 301-1 slides and fits into the connecting slot 301-1 through the opening, the front wall, the rear wall and the side wall on the inner wall of the connecting slot 302 can fit with the connecting slider 301-1. Fig.10 The connecting groove 302 limits the range of movement of the connecting slider 301 - 1 relative to the connecting groove 302 on the horizontal plane, that is, the preliminary connection between the adjusting part 1 and the main body 2 is achieved.

[0041] The front wall refers to the inner wall farthest from the position of the limiting recess 402-2 among the three inner walls, the rear wall is close to the position of the limiting recess 402-2, and preferably, they are on the same plane, and the side wall connects the rear wall and the front wall. After the adjustment part 1 and the main body 2 are preliminarily connected, the horizontal positional relationship between the adjustment part 1 and the main body 2 is fixed, and the two can only slide relative to each other in the vertical direction under the guidance of the sliding connection part 3.

[0042] After the adjustment part 1 and the main body 2 are preliminarily connected, the limiting part 4 limits the relative position of the main body 2 and the adjustment part in the vertical direction by installing the limiting kit 401. Figure 7-8 As shown, the installation limit kit 401 includes a first limit block 401-2 arranged on the adjustment part 1 and a limit buckle 401-1 arranged on the main body 2. After the adjustment part 1 and the main body 2 form a preliminary connection, continue to push the headrest to be installed downward until it is as shown in FIG. Figure 8 As shown, the limit buckle 401-1 will conflict with the first limit block 401-2, preventing further relative sliding. Then, the limit buckle 401-1 is driven to drive it away from the first limit block 401-2 and keep it, so that there is no conflict between the two. At this time, the headrest assembly can continue to be pushed downward until the limit buckle 401-1 passes over the first limit block 401-2. Finally, the limit buckle 401-1 is stopped from being driven, and the limit buckle 401-1 returns to its position, completing the installation of the headrest.

[0043] After the headrest is installed, the main body 2 is placed in the sliding limit path α formed by the first limit block 401-2 and the second limit block 101, as shown in FIG. Figure 7When the adjusting part 1 is driven to slide downward, the main body 2 will eventually collide with the second limit block 101; and when the adjusting part 1 is driven to move upward, the first limit block 401-2 can collide with the limit buckle 401-1 on the main body 2, preventing the main body 2 from sliding out of the sliding limit path α and causing the headrest body A to separate from the seat body.

[0044] When the headrest is to be disassembled, the adjustment part 1 is first lifted up so that the limit buckle 401-1 conflicts with the first limit block 401-2, and then the limit buckle 401-1 is driven away from the first limit block 401-2 and maintained so that there is no conflict between the two. At the same time, the adjustment part 1 is continued to be lifted up until the limit buckle 401-1 passes over the first limit block 401-2 and the connecting slider 301-1 is completely disengaged from the connecting slide groove 302. At this time, the headrest as a whole is separated from the seat body B.

[0045] Preferably, the first limit block 401-2 is provided with a guiding inclined surface structure at one end away from the sliding limiting path α, and a resisting surface structure at one end close to the sliding limiting path α. Figure 7-8 Therefore, when installing the headrest as a whole, after the main body 2 and the adjustment part 1 are initially connected by the sliding connection part 3, the adjustment part 1 can be directly and continuously pressed down to complete the installation. Only when the headrest is disassembled, it is necessary to drive the limit buckle 401-1 away from the first limit block 401-2 and keep it, which further facilitates the installation of the headrest.

[0046] Preferably, if Figure 2~3 As shown, the limiting buckle 401 - 1 is connected to a pressure guide block 401 - 1 a , and the pressure guide block 401 - 1 a is provided with an anti-slip structure, which can facilitate consumers to disassemble the headrest.

[0047] Preferably, if Figure 2 As shown, the connecting slider 301-1 is provided with a fixing protrusion 301-2. In this embodiment, each connecting slider 301-1 is provided with eight fixing protrusions 301-2, of which four fixing protrusions 301-2 are used to contact with the front wall of the inner wall of the connecting slide groove 302, and the remaining four fixing protrusions 301-2 are used to contact with the rear wall. Under this structure, compared with the connecting slider 301-1 directly contacting with the inner wall of the connecting slide groove 302, it is possible to reduce the contact area between the two while ensuring that the connecting slider 301-1 is embedded in the connecting slide groove 302, so that the resistance encountered by the connecting slider 301-1 when sliding is reduced, and the up and down adjustment of the headrest body A is generally smoother.

[0048] Preferably, the limiting portion 4 can limit the relative position relationship between the adjusting portion 1 and the main body portion 2 and also includes the effect of being able to fix the main body portion 2 at any position within the sliding limiting path α. Since the adjusting portion 1 is connected to the headrest body A and the main body 2 is connected to the seat body B, this effect actually serves the height adjustment work of adjusting the headrest body A.

[0049] Therefore, in this embodiment, the limiter 4 also includes a sliding limiter kit 402, so that the relative position between the adjustment part 1 and the main body 2 can be fixed after relative sliding, so that after the consumer completes the height adjustment of the headrest body A, the headrest body A can be guaranteed not to move. Figure 3~4 and Figure 7 As shown, the sliding limiter kit 402 includes a limiter protrusion 402-1 provided on the connecting block 301, and a limiter recess group provided on the adjusting part 1. The limiter recess group includes a plurality of limiter recesses 402-2, and the limiter recesses 402-2 are arranged along the sliding limiter path α, so when the height of the headrest body A is adjusted, the limiter protrusion 402-1 is embedded and slid out between the plurality of limiter recesses 402-2, until the consumer adjusts the headrest body A to the desired height, the limiter protrusion 402-1 is guided by the concave surface of the closest limiter recess 402-2, and is embedded in the limiter recess 402-2 to form a snap fit, thereby achieving the effect of fixing the relative position.

[0050] Preferably, if Figure 2~3 As shown, an elastic pressure structure 301 - 3 is provided on the connecting slider 301 - 1 , and the surface of the elastic pressure structure 301 - 3 that contacts the inner wall of the connecting slide groove 302 after applying pressure is the pressure surface, and in this embodiment, specifically the front wall of the inner wall.

[0051] During the long-term use of the connecting slider 301-1, the part in contact with the inner wall of the connecting slot 302 will inevitably wear out, which will easily lead to a gap between the connecting slider 301-1 and the connecting slot 302, so that the connecting slider 301-1 can be displaced on the horizontal plane relative to the connecting slot 302, and finally the limiting protrusion 402-1 will be separated from the limiting concave part 402-2, resulting in the main body 2 being unable to be fixed at any position within the sliding limiting path α. After the elastic pressure structure 301-3 is provided, the connecting slider 301-1 is driven close to the rear wall by the contact between the pressure surface and the front wall. In this embodiment, the limiting recess 402-2 on the adjustment part 1 is arranged on the same side as the rear wall. When the connecting slider 301-1 is tightly fitted against the rear wall, the limiting protrusion 402-1 is also driven to be tightly fitted into the limiting recess 402-2. At the same time, after the connecting slider 301-1 is tightly fitted against the rear wall, the static friction between the two is enhanced, which jointly ensures the fixing effect of the headrest body A.

[0052] Preferably, if Figure 3~4 As shown, two limiting protrusions 402-1 are provided on the connecting block 301, and the two limiting protrusions 402-1 are symmetrically arranged. To adapt to the two limiting protrusions 402-1, two groups of symmetrically arranged limiting protrusions 402-1 should be provided on the adjusting part 1. Under this structure, it can ensure that the fixing of the sliding limiting kit 402 is more secure, and further ensure that the headrest body A is not easily offset in the vertical direction after adjustment.

[0053] Preferably, in this embodiment, the limiting protrusion 402-1 includes a limiting ball 402-1a structure, which protrudes from the connecting block 301 and can slide. In the process of adjusting the height of the headrest body A, the limiting ball 402-1a can slide to reduce the friction between it and the adjustment part 1. At the same time, the rotation of the limiting ball 402-1a can make different surfaces rub against each other, which can ensure that only part of the structure on the limiting protrusion 402-1 is involved in the long-term friction and is worn, thereby extending the service life of the limiting protrusion 402-1.

[0054] Embodiment 2:

[0055] An office chair is preliminarily installed by the manufacturer to facilitate the transportation of the office chair. During the preliminarily installation, the main body 2 is fixed to the back of the office chair by a fixing structure. In this embodiment, the back of the chair is provided with threads, and the main body 2 is fixed to the back of the chair by screws. The headrest body A is connected to the adjustment part 1 through a connecting piece. After receiving it, the consumer quickly installs the headrest body A on the back of the chair through the sliding connecting piece and the limiting part 4, and assembles the main body of the chair to obtain a fully functional office chair. The remaining components of the chair are mature existing technologies, so they will not be described in detail in this embodiment.

[0056] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the implementation cases of the utility model.

Claims

1. A quick-disassembly seat headrest, characterized in that: The invention comprises a headrest body (A), an adjustment part (1) connected to the headrest body (A), a main body (2) mounted on a seat body (B), a sliding connection part (3) for connecting the adjustment part (1) and the main body (2), and a limiting part (4) for limiting the relative position between the adjustment part (1) and the main body (2); The limiting portion (4) comprises an installation limiting kit (401), and the installation limiting kit (401) comprises a limiting buckle (401-1) arranged on the main body (2) and a first limiting block (401-2) arranged on the adjustment portion (1) and adapted to the limiting buckle (401-1); The adjustment portion (1) is also provided with a second limit block (101) for contacting the main body portion (2); a sliding limit path is formed between the first limit block (401-2) and the second limit block (101); the first limit block (401-2) is disposed on an end of the sliding limit path away from the headrest main body (A).

2. The quick-disassembly seat headrest according to claim 1, characterized in that: The first limiting block (401-2) is provided with a guiding inclined surface structure at one end away from the sliding limiting path, and a resisting surface structure at one end close to the sliding limiting path.

3. The quick-disassembly seat headrest according to claim 1, characterized in that: The limiting buckle (401-1) is connected to a pressure guide block (401-1a), and the pressure guide block (401-1a) is provided with an anti-slip structure.

4. The quick-disassembly seat headrest according to claim 1, characterized in that: The sliding connection portion (3) comprises a connection block (301) arranged on the main body portion (2), and a connection slide groove (302) arranged on the adjustment portion (1), wherein the connection slide groove (302) is adapted to connection sliding blocks (301-1) arranged on both sides of the connection block (301).

5. The quick-detachable seat headrest according to claim 4, characterized in that: A plurality of fixing protrusions (301-2) are arranged on the connecting sliding block (301-1), and the connecting sliding block (301-1) abuts against the front wall and the rear wall of the inner wall of the connecting sliding groove (302) through the fixing protrusions (301-2).

6. The quick-detachable seat headrest according to claim 4, characterized in that: The limiting portion (4) further comprises a sliding limiting kit (402), the sliding limiting kit (402) comprising a limiting protrusion (402-1) arranged on the connecting block (301), and a limiting recess group arranged on the adjusting portion (1), the limiting recess group comprising a plurality of limiting recesses (402-2) arranged along the sliding limiting path.

7. The quick-detachable seat headrest according to claim 6, characterized in that: The connecting sliding block (301-1) is provided with an elastic pressure structure (301-3), and the elastic pressure structure (301-3) is provided with a pressure surface that contacts the front wall of the inner wall of the connecting sliding groove (302).

8. The quick-detachable seat headrest according to claim 6, characterized in that: The connection block (301) is provided with two symmetrically arranged position-limiting protrusions (402-1), and the adjustment portion (1) is provided with two symmetrically arranged position-limiting recesses.

9. The quick-detachable seat headrest according to claim 6 or 8, characterized in that: The limiting convex portion (402-1) comprises a limiting ball (402-1a).

10. An office chair, characterized in that: The invention comprises a quick-disassembly seat headrest as claimed in any one of claims 1 to 9.

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