Quickly-assembled headrest for office chair

Abstract

The utility model discloses a fast-assembly type headrest for an office chair. The fast-assembly type headrest comprises a headrest body, a headrest support and a clamping assembly. The headrest body is clamped and fixed to the top edge of the chair back through the clamping assembly. The headrest body is connected with the clamping assembly through the headrest support. By arranging the clamping seat, the pre-fixing piece and the locking assembly, the headrest can be quickly fixed on the chair back. Wherein the headrest is preliminarily hung at the top of the corresponding chair back through the clamping seat. And the clamping part is bent upwards through the outer end of the pre-fixing piece. When the pre-fixing piece is overturned inwards to the limit position, the clamping part can be embedded into the top edge of the chair back and is matched with the locking assembly to lock the rotating angle of the pre-fixing piece, and then rapid installation and locking of the headrest are achieved. No auxiliary tool is needed in the whole process, and installation and follow-up disassembly by a user are facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of office chair technology, specifically relating to a quick-release headrest for office chairs. Background Technology

[0002] In the prior art, in order to improve the comfort of the human body when leaning back in an office chair, a headrest structure is usually set on the back of the chair so that the human body can place its head on the headrest in a sitting position, thereby providing comfortable rest support and protecting the human body's head and neck.

[0003] Currently, existing headrests are typically installed by first securing a mounting bracket to the chair back with screws. Then, the headrest is slidably attached to the mounting bracket via a headrest support, allowing the user to adjust the headrest height as needed. However, when the user needs to disassemble and replace the headrest for washing or to transport the headrest and chair back separately, both the headrest and the mounting bracket must be removed from the chair back. The screw-fixed mounting bracket makes this disassembly process inconvenient.

[0004] In addition, headrests and chair backs are usually packaged separately, and consumers usually have to assemble the headrest themselves. The traditional assembly of the fixed base and headrest bracket usually requires screws to lock it in place, which is inconvenient when assembling the headrest. It also requires the use of hand tools. Without hand tools, it is impossible to assemble. Therefore, there is an urgent need for a headrest that can be quickly assembled and disassembled to meet the needs of users. Utility Model Content

[0005] To overcome the shortcomings of existing technology, this utility model provides a quick-release headrest for office chairs, so as to solve the technical problem of cumbersome installation and disassembly of headrests for office chairs.

[0006] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0007] A quick-release headrest for office chairs includes a headrest body, a headrest bracket, and a snap-fit ​​assembly. The headrest body is snapped and fixed to the top edge of the chair back via the snap-fit ​​assembly. The headrest body and the snap-fit ​​assembly are connected by the headrest bracket.

[0008] The snap-fit ​​assembly includes a snap-fit ​​base, a pre-fitted component, and a locking component. The snap-fit ​​base is mounted on the top of the corresponding chair back. The pre-fitted component is rotatably connected to the bottom of the snap-fit ​​base and has an upwardly bent snap-fit ​​portion at its outer end. The snap-fit ​​portion can engage with the top edge of the chair back when the pre-fitted component is flipped inward to its limit position. The locking component is rotatably connected to the snap-fit ​​base and is used to lock the rotation angle of the pre-fitted component.

[0009] Furthermore, the locking assembly includes a locking member, a ball bearing, and a spring. The locking member is rotatably connected to the locking seat and has a locking hook on its inner side. The pre-fitting member has a groove that mates with the locking hook. When both the pre-fitting member and the locking member are rotated inward to their extreme positions, the locking hook on the locking member abuts against the groove. The ball bearing is mounted on the locking seat and can extend outward via the spring when the locking member is rotated to its extreme position, thereby locking the position of the locking member.

[0010] Furthermore, the locking seat has a locking groove that mates with the ball bearing. The ball bearing slides within the locking groove and can extend outward under the drive of a spring. The locking member has a locking groove that mates with the ball bearing. When the locking member rotates to its limit position, the opening of the locking groove aligns with the opening of the locking slot. The ball bearing in the locking slot moves outward under the drive of the spring and embeds itself into the locking groove on the locking member, thereby locking the position of the locking member.

[0011] Furthermore, the pre-fitting part has a protruding positioning part. A positioning groove that mates with the positioning part is provided on the top edge of the chair back.

[0012] Furthermore, the headrest also includes a headrest bracket. The headrest body and the snap-fit ​​assembly are connected via the headrest bracket. The headrest bracket and the snap-fit ​​assembly are slidably engaged. The snap-fit ​​bracket is provided with a locking component for locking the headrest bracket when it slides to a designated position.

[0013] Furthermore, a sliding groove is provided on the outer side of the latching seat. The headrest bracket slides into the latching seat via the sliding groove. Mounting slots communicating with the sliding groove are provided on both sides of the sliding groove. The locking assembly is installed within the mounting slots. The locking assembly includes a locking rod and a spring plate. The locking rod is slidably connected within the mounting slot and can extend outward into the sliding groove under the action of the spring plate, embedding itself into the corresponding toothed groove on the headrest bracket.

[0014] Furthermore, a sponge is provided between the spring sheet and the inner wall of the mounting groove.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This invention enables the quick attachment of a headrest to a chair back by using a snap-fit ​​connector, a pre-installed fastener, and a locking assembly. The headrest is initially attached to the top of the chair back via the snap-fit ​​connector. The pre-installed fastener has an upward-bending snap-fit ​​portion. When the pre-installed fastener is flipped inward to its limit position, the snap-fit ​​portion engages with the top edge of the chair back, and the locking assembly locks the rotation angle of the pre-installed fastener, thus achieving quick installation and locking of the headrest. The entire process requires no auxiliary tools, facilitating user installation and subsequent disassembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the pre-fitting component and locking component in this utility model;

[0019] Figure 3 This is a schematic diagram showing the snap-fit ​​component of this utility model snapped onto the chair back.

[0020] Figure 4 This is a schematic diagram of the locking component in this utility model.

[0021] Reference numerals: 1. Headrest body; 2. Headrest bracket; 3. Snap-fit ​​assembly; 4. Snap-fit ​​seat; 5. Pre-fitting component; 6. Locking assembly; 7. Snap-fit ​​part; 8. Locking element; 9. Locking hook part; 10. Positioning part; 11. Locking rod; 12. Spring plate. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1 and 2 As shown, a quick-release headrest for an office chair includes a headrest body 1, a headrest bracket 2, and a snap-fit ​​assembly 3. The headrest body 1 is snapped and fixed to the top edge of the chair back via the snap-fit ​​assembly 3. The headrest body 1 and the snap-fit ​​assembly 3 are connected by the headrest bracket 2. The headrest bracket 2 and the snap-fit ​​assembly 3 are slidably engaged and can be locked when slid to a designated position, thereby allowing the headrest height to be freely adjusted.

[0025] The specific structure is as follows: the snap-fit ​​assembly 3 includes a snap-fit ​​base 4, a pre-fitted component 5, and a locking assembly 6. The snap-fit ​​base 4 has an open-bottomed slot. The snap-fit ​​base 4 is hung on the top of the corresponding chair back via the slot. The pre-fitted component 5 is rotatably connected to the bottom of the snap-fit ​​base 4, and its outer end has an upwardly bent snap-fit ​​portion 7. The snap-fit ​​portion 7 can engage with the top edge of the chair back when the pre-fitted component 5 is flipped inward to its limit position, thereby securing the snap-fit ​​base 4 to the chair back. The locking assembly 6 is rotatably connected to the snap-fit ​​base 4 and is used to lock the rotation angle of the pre-fitted component 5, preventing it from flipping downward during use and causing the snap-fit ​​base 4 and the headrest body 1 to detach from the chair back body.

[0026] like Figure 2 and 3 As shown, the locking assembly 6 includes a locking member 8, a ball, and a spring. The locking member 8 is rotatably connected to the locking seat 4 and has a locking hook 9 on its inner side. The pre-fitting member 5 has a groove that mates with the locking hook 9. When both the pre-fitting member 5 and the locking member 8 are rotated inward to their extreme positions, the locking hook 9 on the locking member 8 abuts against the groove, maintaining the rotation angle of the pre-fitting member 5. The ball is mounted on the locking seat 4 and can extend outward via the spring when the locking member 8 is rotated to its extreme position, thereby locking the position of the locking member 8.

[0027] Specifically, the locking base 4 has a locking groove that mates with the ball. The ball slides within the locking groove and can extend outward under the drive of a spring. The locking member 8 has a locking groove that mates with the ball. When the locking member 8 rotates to its limit position, the locking groove aligns with the opening of the locking groove. The ball in the locking groove moves outward under the drive of the spring until it is embedded in the locking groove on the locking member 8, thereby locking the position of the locking member 8.

[0028] Furthermore, the snap-fit ​​portion 7 of the pre-attachment 5 is provided with a protruding positioning portion 10. A positioning groove that mates with the positioning portion 10 is provided on the top edge of the chair back. During installation, the installation position of the pre-attachment 5 on the top edge of the chair back is determined by the interaction between the positioning portion 10 and the positioning groove.

[0029] like Figure 4 As shown, a locking assembly is provided on the outer side of the locking seat 4 for locking the headrest bracket 2 when it slides to a designated position. Specifically, a sliding groove is provided on the outer side of the locking seat 4. The headrest bracket 2 slides into the locking seat 4 through the sliding groove. Mounting slots communicating with the sliding groove are provided on both sides of the sliding groove. The locking assembly is installed in the mounting slot and includes a locking rod 11 and a spring plate 12. The locking rod 11 is slidably connected in the mounting slot and can extend outward into the sliding groove under the action of the spring plate 12, cooperating with the toothed groove on the headrest bracket to lock the adjusted height of the headrest body 1.

[0030] In this embodiment, the outer end of the locking rod 11 is arc-shaped, which allows the user to push the headrest bracket upward when applying upward force to the headrest bracket.

[0031] Furthermore, a sponge is provided between the spring plate 12 and the inner wall of the mounting groove to reduce the noise generated when the headrest body 1 is adjusted in height.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick-release headrest for an office chair, comprising a headrest body (1), a headrest bracket (2), and a snap-fit ​​assembly (3); the headrest body (1) is snapped and fixed to the top edge of the chair back via the snap-fit ​​assembly (3); the headrest body (1) and the snap-fit ​​assembly (3) are connected via the headrest bracket (2), characterized in that: The snap-fit ​​assembly (3) includes a snap-fit ​​base (4), a pre-fitting component (5), and a locking component (6); the snap-fit ​​base (4) is hung on the top of the corresponding chair back; the pre-fitting component (5) is rotatably connected to the bottom of the snap-fit ​​base (4), and the outer end is provided with an upwardly bent snap-fit ​​part (7); the snap-fit ​​part (7) can be embedded in the top edge of the chair back when the pre-fitting component (5) is flipped inward to the limit position; the locking component (6) is rotatably connected to the snap-fit ​​base (4) and is used to lock the rotation angle of the pre-fitting component (5).

2. A quick-release headrest for an office chair according to claim 1, characterized in that: The locking assembly (6) includes a locking member (8), a ball, and a spring; the locking member (8) is rotatably connected to the locking seat (4) and has a locking hook (9) on its inner side; the pre-fitting member (5) has a hook groove that cooperates with the locking hook (9); when the pre-fitting member (5) and the locking member (8) are both rotated inward to the limit position, the locking hook (9) on the locking member (8) abuts against the hook groove; the ball is installed on the locking seat (4) and can extend outward by the spring when the locking member (8) is rotated to the limit position, thereby locking the position of the locking member (8).

3. A quick-release headrest for an office chair according to claim 2, characterized in that: The card holder (4) has a locking groove that cooperates with the ball; the ball is slidably connected in the locking groove and can extend outward under the drive of the spring; the locking member (8) has a locking groove that cooperates with the ball; when the locking member (8) rotates to the limit position, the locking groove and the opening of the locking groove are aligned; the ball in the locking groove moves outward under the drive of the spring and is embedded in the locking groove on the locking member (8), thereby realizing the position locking of the locking member (8).

4. A quick-release headrest for an office chair according to claim 1, characterized in that: The pre-fitting part (7) of the pre-fitting part (5) is provided with a protruding positioning part (10); a positioning groove that cooperates with the positioning part (10) is provided on the top edge of the chair back.

5. A quick-release headrest for an office chair according to claim 1, characterized in that: It also includes a headrest bracket (2); the headrest body (1) and the snap-fit ​​assembly (3) are connected by the headrest bracket (2); the headrest bracket (2) and the snap-fit ​​assembly (3) are slidably engaged; the snap-fit ​​seat (4) is provided with a locking component for locking the headrest bracket (2) when it slides to a designated position.

6. A quick-release headrest for an office chair according to claim 5, characterized in that: The outer side of the card holder (4) is provided with a sliding groove; the headrest bracket (2) slides with the card holder (4) through the sliding groove; both sides of the sliding groove are provided with mounting grooves that communicate with the sliding groove; the locking assembly is installed in the mounting groove; the locking assembly includes a locking rod (11) and a spring plate (12); the locking rod (11) is slidably connected in the mounting groove and can extend outward into the sliding groove under the action of the spring plate (12) and embed into the corresponding toothed groove on the headrest bracket.

7. A quick-release headrest for an office chair according to claim 6, characterized in that: A sponge is provided between the spring sheet (12) and the inner wall of the mounting groove.

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