Quick-release cover plate and detachable chair back assembly

Abstract

The utility model discloses a quick-release cover plate and a detachable chair back assembly, the quick-release cover plate comprises a cover-shaped covering part, the top end of the covering part is provided with at least one dismounting opening in a hollowed-out manner, and the dismounting opening is configured to assist a user in pulling the covering part; the covering part is provided with an outer surface and an inner surface, a columnar insertion part is arranged on the inner surface of the covering part, and the insertion part is configured to be in insertion fit with the slotted hole of the connecting carrier. According to the quick-release cover plate and the detachable chair back assembly provided by the invention, the disassembly opening is formed in the shielding part, so that a user can insert tools such as a screwdriver into the disassembly opening and pries the quick-release cover plate to separate the quick-release cover plate from the connecting carrier, the disassembly operation of the quick-release cover plate is relatively easy, the quick-release cover plate cannot be damaged, and the service life of the quick-release cover plate is prolonged. Repeated dismounting and mounting can be realized; moreover, the quick-release cover plate is convenient to mount and dismount, so that a manufacturer can deliver the chair back component to a user to assemble, and each component of the chair back can be packaged separately during packaging and transportation, so that the space is saved, and packaging and transportation are convenient.

Description

Technical Field

[0001] The utility model generally relates to the technical field of seats, and in particular to a quick-release cover plate and a detachable chair back assembly. Background Art

[0002] Chairs are essential seating in people's daily lives, and with the advancement of technology, the comfort, functionality, and aesthetics of chairs are constantly improving. There is a chair in the existing market that connects armrests to the backrest so that when the backrest is flipped, the armrests can rotate synchronously with the backrest, so that no matter the user is in a sitting position or a lying position, the armrests are always located on both sides of the backrest and can always provide support for the user's arms; and the armrests are rotatably connected to the backrest, so that the user can not only rotate the armrests to a comfortable support angle, but also flip the armrests to fit the backrest, so that the overall space occupied by the chair becomes smaller and easier to store.

[0003] In order to improve the aesthetics of the seat, the armrest used for connecting to the backrest is recessed to form a groove, and the connecting structure between the armrest and the backrest is arranged in the groove. A cover plate is arranged on the groove so that the connection trace between the armrest and the backrest is hidden in the cover plate, and the outer surface of the cover plate and the armrest are connected as a whole, so that the appearance is more integrated and simple. Figure 9-10 As shown, since the outer surface of the existing cover plate is relatively flat, it is connected to the outer surface of the armrest after being embedded in the groove to form a complete plane, and the side wall of the cover plate fits the groove wall of the groove. Even with tools such as a screwdriver, it is difficult to pry the cover plate out from the gap between the cover plate and the groove; this is because, in order to improve user experience and save users assembly steps, manufacturers assemble the armrests on the chair backs according to unified standards at the factory to form a whole. That is to say, manufacturers usually assemble the armrests, cover plates and backrests in advance before transportation, and pack the assembled chair back components together for transportation.

[0004] However, this solution has the following problems: packaging and transporting the chair back assembly after assembly not only takes up a large space and increases transportation costs, but also during use by the user, if the armrest is damaged or the damping between the armrest and the backrest needs to be adjusted, the cover needs to be removed. Because the cover is tightly embedded in the groove, it is not convenient to pry it open even with the help of tools. Users often need to use brute force to remove the cover until it is damaged. Not only is the disassembly operation very troublesome, but the cover cannot be used again after removal. The manufacturer needs to provide additional cover for users, which will also increase the manufacturing cost of the seat. Summary of the invention

[0005] In view of the above-mentioned defects or shortcomings in the prior art, it is desired to provide a quick-release cover and a detachable chair back assembly. By providing a disassembly port on the cover portion, the user can insert a tool such as a screwdriver into the disassembly port and thereby pry the quick-release cover apart from the connection carrier, thereby making the disassembly operation of the quick-release cover easier and causing no damage to the quick-release cover, and the cover can be repeatedly disassembled and installed. Furthermore, the quick-release cover is easy to install and disassemble, and the manufacturer can have the chair back assembly assembled by the user. During packaging and transportation, the various chair back components can be packaged separately, saving space and facilitating packaging and transportation.

[0006] The effect of the utility model is achieved in this way:

[0007] In a first aspect, the present application provides a quick-release cover plate, comprising a cover-shaped covering portion, the top of the covering portion being hollowed out and provided with at least one disassembly opening, the disassembly opening being configured to assist a user in moving the covering portion; the covering portion having an outer surface and an inner surface, a columnar plug-in portion being provided on the inner surface of the covering portion, the plug-in portion being configured to be plug-fitted into a slot of a connection carrier.

[0008] In some embodiments of the present application, the side wall of the plug-in portion near the top extends outward to form a clamp head, and the width of the clamp head changes from narrow to wide and then to narrow again from the top of the plug-in portion to the covering portion, so that the clamp head has two inclined surfaces facing opposite directions, and the clamp head can be inserted into or removed from the slot hole by means of the inclined surfaces. By setting the clamp head to a structure similar to an ellipsoid, whether the clamp head is inserted into or removed from the slot hole of the connection carrier, it can be inserted or removed smoothly along the inclined surface on the clamp head, avoiding the clamp head being difficult to be removed or being damaged when being removed due to abutting against the connection carrier.

[0009] In some embodiments of the present application, a plurality of avoidance openings are hollowed out on the side wall of the plug-in part, and the plug-in part can realize elastic deformation with the help of the avoidance openings during the plug-in process. When the plug-in part is inserted into or pulled out of the slot hole of the connection carrier, the plug-in part is squeezed by the slot hole, so that the side wall of the plug-in part can be elastically deformed and shrink inward through the avoidance openings, so that the diameter of the clamp head is reduced when the clamp head is inserted, and when the clamp head passes through the slot hole, the plug-in part is restored with the help of the reset elastic force, and the clamp head can be firmly inserted into the slot hole or smoothly separated from the slot hole, further improving the convenience of the installation and removal operation of the quick-release cover plate.

[0010] In some embodiments of the present application, the disassembly opening is opened at the corner between the top of the cover and the side wall, so that the disassembly opening is located in a remote position, which is not easy to affect the flatness of the outer surface of the cover, and is convenient for the user to insert a tool such as a screwdriver from the side and use the lever principle to pry open the quick-release cover plate, which is easy to disassemble.

[0011] In some embodiments of the present application, the cover portion is provided with a pair of left-right symmetrical disassembly openings with the center of the circle of the outer surface of the cover portion as the symmetry point. Not only does the quick-release cover plate have a symmetrical aesthetic appearance, but also during disassembly, the user can insert a screwdriver or other tool into the disassembly openings on both sides, so that when the quick-release cover plate is pried, the left and right sides are evenly stressed and slide upward, causing less damage to the quick-release cover plate.

[0012] In some embodiments of the present application, a plurality of disassembly openings are arranged in a ring shape on the upper edge of the covering portion, with the center of the circle on the outer surface of the covering portion as the center. This not only makes the covering portion more colorful in appearance and serves as a decoration, but also allows the user to select a suitable part for prying from the plurality of disassembly openings for disassembly, making the operation more convenient.

[0013] In some embodiments of the present application, the disassembly opening is provided at the top of the cover portion, and the disassembly opening avoids the side wall of the cover portion, making the position of the disassembly opening more conspicuous and convenient for users to insert tools such as screwdrivers; moreover, the disassembly opening can be provided in various shapes, such as flower shape, diamond shape, circle, etc., so as to make the appearance of the cover portion more diverse and improve the aesthetics of the quick-release cover.

[0014] In a second aspect, the present application provides a detachable chair back assembly, including an armrest, a backrest, and a quick-release cover plate, wherein the armrest is rotatably connected to both sides of the backrest, a connection groove is recessed on the armrest, the connection groove is configured to be provided with a connection structure connected to the backrest, and the quick-release cover plate is covered in the connection groove. The connection structure between the armrest and the backrest in the connection groove is covered by the quick-release cover plate, making the armrest more integrated and simple in appearance.

[0015] In some embodiments of the present application, the side end of the backrest extends outward to form a limiting portion, and a limiting groove is correspondingly provided at the bottom end of the connecting groove. When the armrest rotates relative to the backrest, the limiting portion slides in the limiting groove; a limiting plate is also provided in the connecting groove, and the limiting plate is connected to the limiting portion by a threaded connection, so that the armrest is clamped in the middle by the limiting plate and the backrest. When the armrest is rotated and adjusted, the limiting portion slides in the limiting groove, thereby limiting the angle range of the armrest rotation; and by providing a limiting plate in the connecting groove that is threadedly connected to the limiting portion, the armrest is clamped in the middle by the limiting plate and the backrest, so that the armrest is not easy to detach from the backrest during use, and the stability is better.

[0016] In some embodiments of the present application, a plug hole is provided in the center of the limit plate, and when the quick-release cover is placed on the connection slot, the plug part and the plug hole are plugged together, and the clamp passes through and is inserted into the plug hole. The plug-in cooperation between the plug part and the plug hole makes the connection strength between the quick-release cover and the armrest higher.

[0017] The quick-release cover and detachable chair back assembly provided by the present application have a disassembly opening on the cover portion, so that the user can insert a tool such as a screwdriver into the disassembly opening and use it to pry the quick-release cover apart from the connection carrier. As a result, the disassembly operation of the quick-release cover is relatively easy, and the quick-release cover will not be damaged, and can be repeatedly disassembled and installed. In addition, the quick-release cover is easy to install and disassemble, which also allows the manufacturer to have the chair back assembly assembled by the user. When packaging and transporting the chair back assembly, there is no need to assemble it in advance, so that the various chair back components can be packaged separately, saving space and facilitating packaging and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a chair back assembly provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the connection structure between the chair back components provided in an embodiment of the present application;

[0021] Figure 3 A schematic cross-sectional structure diagram of a chair back assembly provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of the quick-release cover provided in an embodiment of the present application;

[0023] Figure 5 A schematic diagram of the side structure of the quick-release cover provided in an embodiment of the present application;

[0024] Figure 6 A schematic diagram of the top view of the quick-release cover provided in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the top view of the quick-release cover when the disassembly openings are distributed in a ring shape provided in an embodiment of the present application;

[0026] Figure 8 A schematic diagram of the top view of the quick-release cover when the disassembly opening avoids the side wall of the covering portion provided in the embodiment of the present application;

[0027] Fig. 9 A three-dimensional structural schematic diagram of a chair back assembly provided by the prior art;

[0028] Fig.10 A schematic diagram of the three-dimensional structure of a cover plate provided in the prior art.

[0029] The figures are marked as follows: 1-quick release cover, 110-covering part, 111-disassembly opening, 120-plug-in part, 121-clamp, 122-avoidance opening, 2-armrest, 210-connecting groove, 211-limiting groove, 220-limiting plate, 221-plug-in hole, 3-backrest, 310-limiting part. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0031] Please refer to the attached Figure 1-8 The embodiment of the present application provides a quick-release cover plate 1, including a cover-shaped covering portion 110, the top of the covering portion 110 is hollowed out and provided with at least one disassembly opening 111, and the disassembly opening 111 is configured to assist the user in moving the covering portion 110; the covering portion 110 has an outer surface and an inner surface, and a columnar plug-in portion 120 is provided on the inner surface of the covering portion 110, and the plug-in portion 120 is configured to be plugged into and matched with a slot of a connection carrier.

[0032] Please refer to the attached Figure 4-6 In the present embodiment, by providing a disassembly opening 111 on the covering portion 110, the user can insert a tool such as a screwdriver into the disassembly opening 111 and use the tool to pry the quick-release cover 1 to separate it from the connection carrier. As a result, the disassembly operation of the quick-release cover 1 is relatively easy and will not cause damage to the quick-release cover 1, and the quick-release cover 1 can be repeatedly disassembled and installed. Moreover, the quick-release cover 1 is easy to install and disassemble, which also allows the manufacturer to hand over the chair back assembly to the user for assembly. When packaging and transporting the chair back assembly, there is no need to assemble it in advance, so that the various chair back components can be packaged separately, saving space and facilitating packaging and transportation.

[0033] Please refer to the attached Figure 4-5 In some embodiments of the present application, the side wall of the plug-in portion 120 near the top extends outward to form a clamping head 121. From the top of the plug-in portion 120 to the covering portion 110, the width of the clamping head 121 changes from narrow to wide and then to narrow, so that the clamping head 121 has two inclined surfaces facing opposite directions. The clamping head 121 can be inserted into or removed from the slot hole with the help of the inclined surfaces.

[0034] Please refer to the attached Figure 9-10The clamp head of the existing cover plate is a truncated cone structure with a narrow front end and a wide rear end. When the cover plate is inserted into the connection carrier, the vertical surface of the rear side of the clamp head tightly abuts against the end surface of the front side of the slot hole, so that the clamp head cannot be easily removed from the slot hole. If it is pulled out by brute force, it is likely to cause damage to the parts. In this embodiment, by setting the clamp head 121 to a structure similar to an ellipsoid, whether the clamp head 121 is inserted into or pulled out of the slot hole of the connection carrier, it can be smoothly inserted or pulled out along the inclined surface on the clamp head 121, avoiding the clamp head 121 abutting against the connection carrier, which makes it difficult to pull out or causes damage when pulling out.

[0035] Please refer to the attached Figure 4-5 In some embodiments of the present application, a plurality of avoidance openings 122 are hollowed out on the side wall of the plug-in portion 120 , and the plug-in portion 120 can achieve elastic deformation with the help of the avoidance openings 122 during the plug-in process.

[0036] In this embodiment, since the diameter of the slot is often smaller than the diameter of the clamp head 121, if the rigidity of the plug-in part 120 is high and difficult to deform, the clamp head 121 may not be able to pass through the slot smoothly. Therefore, by providing an avoidance opening 122 on the plug-in part 120, when the plug-in part 120 is inserted into or pulled out of the slot of the connection carrier, the plug-in part 120 is squeezed by the slot, so that the side wall of the plug-in part 120 can be elastically deformed and shrink inward through the avoidance opening 122, so that the diameter of the clamp head 121 is reduced when it is inserted. When the clamp head 121 passes through the slot, the plug-in part 120 is restored by the reset elastic force, and the clamp head 121 can be firmly inserted into the slot or smoothly separated from the slot, further improving the convenience of the installation and removal operation of the quick-release cover 1.

[0037] Please refer to the attached Figure 4-6 In some embodiments of the present application, the disassembly opening 111 is opened at the corner between the top and the side wall of the cover portion 110. This makes the disassembly opening 111 relatively remote, which is not easy to affect the flatness of the outer surface of the cover portion 110, and is convenient for the user to insert a tool such as a screwdriver from the side and use the lever principle to pry open the quick-release cover plate 1, which is easy to disassemble.

[0038] Please refer to the attached Figure 4-6 In some embodiments of the present application, a pair of left-right symmetrical disassembly openings 111 are provided on the covering portion 110 with the center of the circle of the outer surface of the covering portion 110 as a symmetric point.

[0039] In this embodiment, by providing a pair of symmetrical disassembly openings 111, not only the quick-release cover 1 has a symmetrical aesthetic in appearance, but also during the disassembly operation, the user can insert tools such as screwdrivers into the disassembly openings 111 on both sides, so that when the quick-release cover 1 is pried, the left and right sides thereof are evenly stressed and slide upward, which causes less damage to the quick-release cover 1 and avoids the quick-release cover 1 from bending or even cracking due to the prying force on one side, thereby making it impossible to reuse.

[0040] Please refer to the attached Figure 7 In some embodiments of the present application, a plurality of disassembly openings 111 are arranged in a ring shape along the upper edge of the covering portion 110 with the center of the circle of the outer surface of the covering portion 110 as the center.

[0041] In this embodiment, a plurality of disassembly openings 111 arranged in a ring are provided on the cover portion 110, which not only makes the cover portion 110 more colorful in appearance and serves a decorative purpose, but also allows the user to select a suitable prying position from the plurality of disassembly openings 111 for disassembly operation, making the operation more convenient.

[0042] Please refer to the attached Figure 8 In some embodiments of the present application, the disassembly opening 111 is opened at the top of the covering portion 110 , and the disassembly opening 111 avoids the side wall of the covering portion 110 .

[0043] In this embodiment, the disassembly opening 111 is arranged to avoid the side wall of the covering portion 110, so that the position of the disassembly opening 111 is more conspicuous, which is convenient for the user to insert tools such as a screwdriver; not only that, the disassembly opening 111 can also be set to various richer shapes, such as flower shape, diamond shape, circle, etc., so that the appearance of the covering portion 110 is richer, thereby improving the aesthetics of the quick-release cover 1.

[0044] Please refer to the attached Figure 1-3 The embodiment of the present application also provides a detachable chair back assembly, including an armrest 2, a backrest 3 and a quick-release cover plate 1. The armrest 2 is rotatably connected to both sides of the backrest 3. A connecting groove 210 is recessed on the armrest 2. The connecting groove 210 is configured to be provided with a connecting structure connected to the backrest 3. The quick-release cover plate 1 is covered in the connecting groove 210.

[0045] In this embodiment, the quick-release cover plate 1 is covered on the connection groove 210 of the armrest 2 so that the connection structure between the armrest 2 and the backrest 3 in the connection groove 210 is covered by the quick-release cover plate 1, making the armrest 2 more integrated and simple in appearance.

[0046] Among them, preferably, after the quick-release cover 1 is inserted into the connecting groove 210, the outer surface of the covering portion 110 is flush with the outer surface of the armrest 2, so that in appearance, the quick-release cover 1 and the armrest 2 are connected as a whole, and the armrest 2 is more integrated and simple.

[0047] Please refer to the attached Figure 1-3 In some embodiments of the present application, the side end of the backrest 3 extends outward to form a limiting portion 310, and a limiting slot 211 is correspondingly provided at the bottom end of the connecting slot 210. When the armrest 2 rotates relative to the backrest 3, the limiting portion 310 slides in the limiting slot 211; a limiting plate 220 is also provided in the connecting slot 210, and the limiting plate 220 is connected to the limiting portion 310 by a threaded connection, so that the armrest 2 is clamped in the middle by the limiting plate 220 and the backrest 3.

[0048] In this embodiment, when the armrest 2 is rotated and adjusted, the limiting portion 310 slides in the limiting groove 211, thereby limiting the angular range of rotation of the armrest 2; and, by providing a limiting plate 220 threadedly connected to the limiting portion 310 in the connecting groove 210, the armrest 2 is clamped in the middle by the limiting plate 220 and the backrest 3, so that the armrest 2 is not easily detached from the backrest 3 during use, and has better stability; not only that, the limiting plate 220 is connected to the limiting portion 310 by a threaded connection, which not only makes the installation and disassembly operations between the two simple, but also the user can adjust the tightness between the limiting plate 220 and the limiting portion 310 by screwing the screws on the limiting plate 220, thereby adjusting the tightness between the armrest 2 and the backrest 3.

[0049] Among them, preferably, the side wall of the backrest 3 extends outward to form two symmetrical limiting portions 310, and the bottom end of the connecting groove 210 is correspondingly provided with two symmetrical limiting grooves 210, so that the armrest 2 is limited by the two limiting portions 310 when rotating, and the rotation adjustment process is more stable.

[0050] Please refer to the attached Figure 1-3 In some embodiments of the present application, the center of the limit plate 220 is hollowed out to form a plug hole 221. When the quick-release cover 1 is covered on the connection slot 210, the plug portion 120 and the plug hole 221 are plugged together, and the clamp head 121 passes through and is inserted into the plug hole 221. The plug-in cooperation between the plug portion 120 and the plug hole 221 makes the connection strength between the quick-release cover 1 and the armrest 2 higher.

[0051] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means more than three.

[0052] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A quick-release cover plate (1), characterized in that: The invention comprises a cover-shaped covering portion (110), the top end of the covering portion (110) being hollowed out and provided with at least one disassembly opening (111), the disassembly opening (111) being configured to assist a user in moving the covering portion (110); the covering portion (110) having an outer surface and an inner surface, a columnar plug-in portion (120) being provided on the inner surface of the covering portion (110), the plug-in portion (120) being configured to be plugged into and matched with a slot of a connection carrier.

2. The quick-release cover (1) according to claim 1, characterized in that: The side wall of the plug-in portion (120) near the top extends outward to form a clamping head (121); from the top of the plug-in portion (120) to the covering portion (110), the width of the clamping head (121) changes from narrow to wide and then to narrow again, so that the clamping head (121) has two inclined surfaces facing opposite directions, and the clamping head (121) can be clamped inwardly into or outwardly out of the slot hole by means of the inclined surfaces.

3. The quick-release cover (1) according to claim 1, characterized in that: A plurality of avoidance openings (122) are hollowed out on the side wall of the plug-in portion (120), and the plug-in portion (120) can achieve elastic deformation with the aid of the avoidance openings (122) during the plug-in process.

4. The quick-release cover (1) according to claim 1, characterized in that: The disassembly opening (111) is opened at a corner between the top end and the side wall of the covering portion (110).

5. The quick-release cover (1) according to claim 4, characterized in that: With the center of the circle of the outer surface of the covering portion (110) as a symmetric point, the covering portion (110) is provided with a pair of left-right symmetrical disassembly openings (111).

6. The quick-release cover (1) according to claim 1, characterized in that: A plurality of disassembly openings (111) are arranged in a ring shape along the upper edge of the covering portion (110), with the center of the circle on the outer surface of the covering portion (110) as the center.

7. The quick-release cover (1) according to claim 1, characterized in that: The disassembly opening (111) is opened at the top end of the covering portion (110), and the disassembly opening (111) avoids the side wall of the covering portion (110).

8. A detachable chair back assembly, characterized in that: The invention comprises an armrest (2), a backrest (3) and a quick-release cover plate (1) according to any one of claims 1 to 7, wherein the armrest (2) is rotatably connected to two sides of the backrest (3), a connecting groove (210) is recessed on the armrest (2), the connecting groove (210) is configured to be provided with a connecting structure connected to the backrest (3), and the quick-release cover plate (1) is covered in the connecting groove (210).

9. The detachable seat back assembly according to claim 8, characterized in that: The side end of the backrest (3) extends outward to form a limiting portion (310), and a limiting slot (211) is correspondingly provided at the bottom end of the connecting groove (210). When the armrest (2) rotates relative to the backrest (3), the limiting portion (310) slides in the limiting slot (211); a limiting plate (220) is also provided in the connecting groove (210), and the limiting plate (220) is connected to the limiting portion (310) by means of a threaded connection, so that the armrest (2) is clamped between the limiting plate (220) and the backrest (3).

10. The detachable seat back assembly according to claim 9, characterized in that: The center of the limiting plate (220) is hollowed out to form a plug hole (221); when the quick-release cover plate (1) is covered on the connection groove (210), the plug portion (120) and the plug hole (221) are plugged and matched, and the clamping head (121) passes through and is clamped into the plug hole (221).

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