Quickly-assembled positioning expansion kit

Abstract

The utility model provides a quick-assembly type positioning expansion suite, which comprises an expansion sleeve and a positioning screw rod penetrating through the expansion sleeve, the positioning screw rod comprises a screw rod body and a positioning column sleeved in the middle of the screw rod body, one end of the screw rod body is provided with a pushing part, one end of the positioning column is connected with the expansion sleeve through threads, and the expansion sleeve is connected with the positioning column through threads. The other end of the positioning column is of a prism structure; according to the utility model, through the design of the quick-assembly positioning expansion sleeve, the steps and the number of parts during furniture assembly are reduced, and through the integrated design, additional wood pins or a plurality of parts are not needed to be matched for positioning, so that the assembly efficiency is improved; the combination mode of the positioning screw rod and the expansion sleeve can effectively avoid the problem that locking is not firm due to too deep or too shallow screwing-in, connection stability and furniture firmness are guaranteed, shaking is reduced, and the furniture can be independently placed without additional fixing. And by adopting a built-in structure, the overall attractiveness of the furniture is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of furniture quick assembly connectors, specifically to a quick-installation positioning expansion kit. Background Technology

[0002] Existing furniture assembly connectors are generally two-in-one or three-in-one eccentric parts that are directly tightened or embedded for positioning and tightening. Their main disadvantages are: (1) The furniture assembly process is complicated and inefficient. For example, the most commonly used three-in-one (plastic seat, screw, eccentric lock nut) disassembly and assembly parts not only require screws and plastic seats to be driven into the surface of the board, but also require wooden dowels for positioning; (2) If the screw is screwed into the plastic seat too deeply or too shallowly, the eccentric nut will not be able to hook the screw head, resulting in the inability to lock; (3) The tightening method results in an unstable lock and wobbling. The assembled furniture must be fixed separately. For example, the back panel can be placed independently by fixing it with screws; (4) The exposed eccentric nut holes on the board are large and not aesthetically pleasing; (5) The cost of use is high. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a quick-installation positioning expansion kit. It integrates positioning and fastening functions; enables rapid and stable furniture assembly; is simple to process, highly efficient, and low-cost; and results in naturally aesthetically pleasing assembled furniture with no or very small exposed holes. It can be used for both 90° right-angle connections and 180° straight-line connections.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A quick-release positioning expansion kit is provided, comprising an expansion sleeve and a positioning screw passing through the expansion sleeve, wherein:

[0006] The positioning screw includes a screw body and a positioning post sleeved in the middle of the screw body. One end of the screw body is provided with a pushing part. The end of the positioning post located at the pushing part is connected to an expansion sleeve by a thread. The other end of the positioning post has a prism structure.

[0007] The expansion sleeve is provided with several sets of expansion slots circumferentially at one end of the pushing part.

[0008] Preferably, a push head is provided at one end of the screw body opposite to the push part.

[0009] Preferably, the cross-section of the pushing part is conical, and the expansion sleeve extends to the inner side of one end of the pushing part with an expansion protrusion, the expansion protrusion having a wedge-shaped slope corresponding to the pushing part.

[0010] Preferably, the outer periphery of the pushing part contacts the expansion protrusion, and the pushing part and the expansion protrusion are respectively provided with anti-slip threads extending in opposite directions.

[0011] Preferably, the outer peripheral edge of the expansion sleeve located at one end of the expansion groove is chamfered.

[0012] Preferably, the expansion sleeve has an external thread extending from the outer periphery of one end of the expansion groove.

[0013] Preferably, the prism cross-section of the positioning post is polygonal or has a plum blossom shape.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This utility model provides a quick-install positioning expansion kit. The quick-install positioning expansion kit design reduces the steps and number of parts required when assembling furniture. Through its integrated design, it eliminates the need for additional wooden dowels or multiple parts for positioning, improving assembly efficiency. The connection between the positioning screw and the expansion sleeve effectively avoids insecure locking caused by excessive or insufficient screwing, ensuring connection stability and furniture sturdiness, reducing wobbling, and allowing for independent placement without additional fixing. Due to its built-in structure, the exposed eccentric nut holes on the panels are smaller, thus enhancing the overall aesthetics of the furniture. The quick-install positioning expansion kit design simplifies the production process and material usage, potentially reducing overall operating costs, thus benefiting both consumers and manufacturers. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is the main view of the utility model;

[0019] Figure 3 This is a cross-sectional view of the present invention.

[0020] In the diagram: 1. Expansion sleeve; 2. Positioning screw; 3. Screw body; 4. Positioning pin; 5. Pushing part; 6. Expansion groove; 7. Pushing head; 8. Expansion protrusion; 9. Anti-slip thread; 10. Chamfer; 11. External thread. Detailed Implementation

[0021] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0024] The following combination Figures 1 to 3 This invention describes a quick-release positioning expansion kit.

[0025] like Figures 1 to 3 As shown, this utility model provides a quick-installation positioning expansion kit, including an expansion sleeve 1 and a positioning screw 2 passing through the expansion sleeve 1, wherein:

[0026] The positioning screw 2 includes a screw body 3 and a positioning pin 4 sleeved in the middle of the screw body 3. One end of the screw body 3 is provided with a pushing part 5. The positioning pin 4 is located at one end of the pushing part 5 and is connected to an expansion sleeve 1 by a thread. The other end of the positioning pin 4 has a prism structure.

[0027] The expansion sleeve 1 is provided with several sets of expansion slots 6 circumferentially at one end of the pushing part 5. The expansion slots 6 are used to expand when the pushing part 5 is pushed, so as to fix the expansion sleeve 1.

[0028] Preferably, a push head 7 is provided at one end of the screw body 3 opposite to the push part 5. When the push head 7 is struck, the screw body 3 can be inserted to push the push part 5 and realize the expansion sleeve 1 expansion.

[0029] Preferably, the cross-section of the pushing part 5 is conical, and the expansion sleeve 1 extends to the inner side of one end of the pushing part 5 and is provided with an expansion protrusion 8. The expansion protrusion 8 is provided with a wedge-shaped slope corresponding to the pushing part 5. The wedge-shaped slope of the expansion protrusion 8 cooperates with the conical structure of the pushing part 5 to realize the expansion of the expansion sleeve 1.

[0030] Preferably, the outer periphery of the pushing part 5 is in contact with the expansion protrusion 8, and the pushing part 5 and the expansion protrusion 8 are respectively provided with anti-slip threads 9 extending in opposite directions. The anti-slip threads 9 can effectively prevent the screw body 3 from being passively retracted.

[0031] Preferably, the outer peripheral edge of the expansion sleeve 1 located at the expansion groove 6 is provided with a chamfer 10, which facilitates the insertion of the expansion sleeve 1.

[0032] Preferably, the expansion sleeve 1 has an external thread 11 extending from the outer periphery of one end of the expansion groove 6, and the external thread 11 is used to connect furniture panels.

[0033] Preferably, the prism cross-section of the positioning post 4 is polygonal or plum blossom-shaped. In this embodiment, the prism is hexagonal. The positioning post 4 of the hexagonal prism can be twisted and rotated by a tool to retract the screw body 3, thereby removing the expansion sleeve 1.

[0034] This utility model provides a quick-install positioning expansion kit. The quick-install positioning expansion kit design reduces the steps and number of parts required when assembling furniture. Through its integrated design, it eliminates the need for additional wooden dowels or multiple parts for positioning, improving assembly efficiency. The connection between the positioning screw 2 and the expansion sleeve 1 effectively avoids insecure locking caused by excessive or insufficient screwing, ensuring connection stability and furniture sturdiness, reducing wobbling, and allowing for independent placement without additional fixing. Due to its built-in structure, the exposed eccentric nut holes on the panels are smaller, thus enhancing the overall aesthetics of the furniture. The quick-install positioning expansion kit design simplifies the production process and material usage, potentially reducing overall operating costs, thus benefiting both consumers and manufacturers.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A quick-release positioning expansion kit, characterized in that, It includes an expansion sleeve and a positioning screw passing through the expansion sleeve, wherein: The positioning screw includes a screw body and a positioning post sleeved in the middle of the screw body. One end of the screw body is provided with a pushing part. The end of the positioning post located at the pushing part is connected to an expansion sleeve by a thread. The other end of the positioning post has a prism structure. The expansion sleeve is provided with several sets of expansion slots circumferentially at one end of the pushing part.

2. The quick-release positioning expansion kit according to claim 1, characterized in that, The screw body is provided with a push head at one end opposite to the push part.

3. The quick-release positioning expansion kit according to claim 1, characterized in that, The cross-section of the pushing part is conical, and the expansion sleeve extends to the inner side of one end of the pushing part with an expansion protrusion. The expansion protrusion is provided with a wedge-shaped slope corresponding to the pushing part.

4. A quick-release positioning expansion kit according to claim 3, characterized in that, The outer periphery of the pushing part contacts the expansion protrusion, and the pushing part and the expansion protrusion are respectively provided with anti-slip threads extending in opposite directions.

5. A quick-release positioning expansion kit according to claim 1, characterized in that, The expansion sleeve has a chamfered edge on the outer periphery of one end of the expansion groove.

6. A quick-release positioning expansion kit according to claim 1, characterized in that, The expansion sleeve has an external thread extending from one end of the expansion groove.

7. A quick-release positioning expansion kit according to claim 1, characterized in that, The prism cross-section of the positioning post is polygonal or has a plum blossom shape.

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