A table top splicing self-locking connector
Patent Information
- Application Number
- CN202522366423.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-07
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-11-07
AI Technical Summary
[0002]桌台面拼接是家具生产加工过程中常见的一道流程，现阶段两块台板之间拼接的方式常见的有：胶水拼接、榫卯拼接、螺钉拼接等主流方式，但是这些方式都有一定的限制和缺陷；最常见的通病是：承载力上限不高，受力点集中于拼接处，由螺钉、榫卯、胶水等零部件承担压力，受力面积小，受力集中，无法承受较大的压力，当受力超过承载限度时，会导致拼接处断；
通过限位导槽和限位导块的螺纹锁紧配合，将夹块和固定块分别于两块板上，利用螺纹调节间距，实现夹持定位，以将两块板拼接固定，且可起到拉直齐平的效果。固定完毕后可利用定位盖、连接杆和装饰盖板盖设在板块的槽口处进行遮挡，不但可以美化外观，且可以进一步提升结构强度，益于增加抗弯折能力。而本装置的拼接锁定方式，相较胶水粘合的方式，承载力更强，接缝较小，且不易受到温度变化的影响而出现松脱，而相较榫卯连接的方式，加工要求精度更低，同时连接点不易出现开裂等现象，另外相比较螺丝固定的方式来说，不会因为台面过大而导致螺钉位置过度受力导致螺孔胀坏开裂，同时对于木材硬度要求较低。本装置结构简单，锁紧力强，且便于安装拆卸，有益于校准后的二次调整。
Smart Images
Figure CN224729885U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tabletop splicing connectors, specifically a tabletop splicing self-locking connector. Background Technology
[0002] Tabletop splicing is a common process in furniture manufacturing. Currently, the most common methods for splicing two tabletops include glue splicing, mortise and tenon splicing, and screw splicing. However, these methods all have certain limitations and defects. The most common problem is that the upper limit of load-bearing capacity is not high. The stress is concentrated at the splicing point, and the pressure is borne by screws, mortise and tenon joints, glue, and other components. The stress area is small and the stress is concentrated, which cannot withstand large pressure. When the stress exceeds the load-bearing limit, it will cause the splicing point to break. Secondly, the above methods have certain requirements on the thickness and size of the board. When the thickness of the board is less than a certain level, the adhesive area of the splicing surface and the position of the tenon and mortise joint are limited, which cannot achieve a sufficient connection effect. At the same time, when the size of the board is too large, its own weight increases; and the force point of the board and the connection point is far away, the lever arm increases, which leads to greater stress on the connector at the connection point and makes it more prone to breakage. Utility Model Content
[0003] (a) Technical problems to be solved In view of the above-mentioned shortcomings of the existing technology, the present invention provides a tabletop splicing self-locking connector, which can effectively solve the problems of the existing technology.
[0004] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a self-locking connector for tabletop splicing, including a fixing block and a fixing frame, and a screw fixedly connected to the fixing block. It also includes a positioning cover, a connecting rod, and a decorative cover plate covering the front of the fixing block, screw, and fixing frame. The positioning cover and the decorative cover plate are fixedly connected to the left and right sides of the connecting rod. The right end of the fixing frame has a through hole adapted to the screw. A clamping block is movably arranged inside the fixing frame. A guide hole is opened in the middle of the clamping block, and a threaded sleeve is rotatably installed in the guide hole. The left end of the screw passes through the through hole and the guide hole and is threadedly connected to the threaded sleeve. The outer wall of the threaded sleeve is provided with a ring array of connecting teeth. A worm gear that meshes with the connecting teeth is rotatably installed inside the clamping block, and an internal hexagonal end block is fixedly provided at the front end of the worm gear.
[0005] Furthermore, the fixing block is circular, the left side of the fixing frame is square, the right end of both the fixing frame and the clamping block is semi-circular, the diameter of the right semi-circular part of the fixing frame is equal to the diameter of the fixing block, and the outer diameter of the clamping block is adapted to the inner diameter of the fixing frame.
[0006] Furthermore, symmetrical limit guide grooves are provided on the upper and lower sides of the screw, and a limit guide block that slides within the limit guide groove is fixedly installed in the guide hole.
[0007] Furthermore, the front end of the fixing block is provided with a positioning groove, the rear end of the positioning cover is fixedly connected with a positioning ring that matches the positioning groove, the front side of the fixing block is provided with a screw hole, and the front end of the positioning cover is inserted with a bolt that matches the screw hole.
[0008] Furthermore, the longitudinal section height of the connecting rod is adapted to the longitudinal section diameter of the screw, and the rear surface of the connecting rod is provided with an arc-shaped groove adapted to the screw.
[0009] Furthermore, a reinforcing seat is fixedly connected to the rear surface of the decorative cover plate, and a groove adapted to the screw is provided on the rear side of the reinforcing seat. The inner corners of the upper and lower ends of the reinforcing seat are rounded, and the outer diameter of the rear end of the reinforcing seat is adapted to the inner diameter of the fixed frame.
[0010] (III) Beneficial Effects Compared with the known prior art, the technical solution provided by this utility model has the following beneficial effects: By using the threaded locking mechanism of the limiting guide groove and the limiting guide block, the clamping block and the fixing block are respectively attached to the two plates. The spacing is adjusted using the threads to achieve clamping and positioning, thus splicing and fixing the two plates together and achieving a straightening and flushing effect. After fixing, the positioning cover, connecting rod, and decorative cover plate can be used to cover the groove of the plate to conceal it, which not only beautifies the appearance but also further enhances the structural strength and increases the resistance to bending. Compared with glue bonding, the splicing and locking method of this device has stronger load-bearing capacity, smaller joints, and is less susceptible to loosening due to temperature changes. Compared with mortise and tenon joints, it requires lower processing precision and is less prone to cracking at the connection point. In addition, compared with screw fixing, it avoids excessive stress on the screw position due to an excessively large table surface, which could cause the screw hole to expand and crack. It also has lower requirements for the hardness of the wood. This device has a simple structure, strong locking force, and is easy to install and disassemble, which is beneficial for secondary adjustments after calibration. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.
[0012] Figure 1 This is a schematic diagram of the usage state of this utility model; Figure 2 This is a cross-sectional view of the structure of this utility model in use. Figure 3 This is a front view schematic diagram of the structure of this utility model; Figure 4 This is a structural breakdown diagram of the present invention; Figure 5 This is a rear view schematic diagram of the structure of the positioning cover, connecting rod and decorative cover plate in this utility model; Figure 6 This is a front sectional view of the structure of this utility model; Figure 7 This is a side view sectional diagram of the structure at the clamping block in this utility model.
[0013] The labels in the diagram represent: 1. Fixing block; 2. Screw; 3. Fixing frame; 4. Through hole; 5. Clamping block; 6. Guide hole; 7. Limiting guide groove; 8. Limiting guide block; 9. Screw sleeve; 10. Connecting teeth; 11. Worm gear; 12. Socket hexagon end block; 13. Positioning groove; 14. Screw hole; 15. Positioning cover; 16. Positioning ring; 17. Bolt; 18. Connecting rod; 19. Decorative cover plate; 20. Reinforcing seat; 21. Arc-shaped groove. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0015] Please see Figure 1-7 This utility model provides an embodiment of a tabletop splicing self-locking connector, including a fixing block 1 and a fixing frame 3, and a screw 2 fixedly connected to the fixing block 1. It also includes a positioning cover 15, a connecting rod 18 and a decorative cover plate 19 covering the front of the fixing block 1, the screw 2 and the fixing frame 3. The positioning cover 15 and the decorative cover plate 19 are fixedly connected to the left and right sides of the connecting rod 18. The right end of the fixing frame 3 has a through hole 4 that matches the screw 2. A clamping block 5 is movably arranged inside the fixing frame 3. A guide hole 6 is opened in the middle of the clamping block 5, and a screw sleeve 9 is rotatably installed in the guide hole 6. The left end of the screw 2 passes through the through hole 4 and the guide hole 6 and is threadedly connected to the screw sleeve 9. The outer wall of the screw sleeve 9 is provided with a connecting tooth 10 arranged in a ring array. A worm gear 11 that meshes with the connecting tooth 10 is rotatably installed inside the clamping block 5, and an internal hexagonal end block 12 is fixedly arranged at the front end of the worm gear 11.
[0016] As a preferred embodiment of this example, Figure 3 and Figure 6 As shown, the fixing block 1 is circular, the left side of the fixing frame 3 is square, and the right ends of both the fixing frame 3 and the clamping block 5 are semi-circular. The diameter of the semi-circular right side of the fixing frame 3 is equal to the diameter of the fixing block 1, and the outer diameter of the clamping block 5 matches the inner diameter of the fixing frame 3. This structure ensures that the surface of the fixing block 1 has no obvious sharp edges, and the side of the fixing frame 3 closest to the fixing block 1 is also arc-shaped. Thus, when the fixing block 1 and the fixing frame 3 are tightened by the cooperation of the screw 2 and the screw sleeve 9, the fixing block 1 and the fixing frame 3 will be pulled tightly against the inner wall of the wooden board in the reserved groove. The arc shape allows them to fit tightly in the reserved groove, and the shape of the clamping block 5 facilitates its translation within the fixing frame 3 and allows it to fit against the inner wall of the fixing frame 3 when clamped.
[0017] As a preferred embodiment of this example, Figure 6 and Figure 7 As shown, symmetrical limit guide grooves 7 are provided on the upper and lower sides of the screw 2, and a limit guide block 8 is fixedly installed in the guide hole 6, which slides within the limit guide groove 7. This structure is used to limit and guide the screw 2 by sliding the limit guide block 8 in the limit guide groove 7, so that the screw 2 cannot rotate within the guide hole 6. Therefore, when the screw sleeve 9 rotates, it will not drive the screw 2 to rotate, but the screw 2 can be driven to move laterally within the guide hole 6 through the thread action.
[0018] As a preferred embodiment of this example, Figure 4 , Figure 5 and Figure 6 As shown, the front end of the fixing block 1 has a positioning groove 13, and the rear end of the positioning cover 15 is fixedly connected to a positioning ring 16 that matches the positioning groove 13. The front side of the fixing block 1 has a screw hole 14, and the front end of the positioning cover 15 is fitted with a bolt 17 that matches the screw hole 14. The compatibility between the positioning ring 16 and the positioning groove 13 in this structure allows for alignment during installation by inserting the positioning ring 16 into the positioning groove 13, thus preventing misalignment. The bolt 17 can fix the positioning cover 15 to the front side of the fixing block 1, ensuring that the positioning cover 15, the connecting rod 18, and the decorative cover plate 19 can cover the front side of the fixing block 1, the screw 2, and the fixing frame 3.
[0019] As a preferred embodiment of this example, Figure 4 and Figure 5As shown, the longitudinal section height of the connecting rod 18 is adapted to the longitudinal section diameter of the screw 2, and an arc-shaped groove 21 adapted to the screw 2 is provided on the rear surface of the connecting rod 18. This structure allows the front side of the screw 2 to be covered after the connecting rod 18 is placed in the reserved groove on the wooden board, and the screw 2 can be fitted and connected by the arc-shaped groove 21 fitting against the surface of the screw 2.
[0020] As a preferred embodiment of this example, Figure 4 and Figure 5 As shown, a reinforcing seat 20 is fixedly connected to the rear surface of the decorative cover plate 19, and a groove adapted to the screw 2 is provided on the rear side of the reinforcing seat 20. The inner corners of the upper and lower ends of the reinforcing seat 20 are rounded, and the outer diameter of the rear end of the reinforcing seat 20 is adapted to the inner diameter of the fixed frame 3. This structure allows the reinforcing seat 20 to be inserted into the fixed frame 3 to cover the front opening of the fixed frame 3 with the decorative cover plate 19. The reinforcing seat 20 can also provide close support to the inner wall of the fixed frame 3. Together with the positioning ring 16 and the connecting rod 18, it can enhance the overall strength of the fixing block 1, the screw 2 and the fixed frame 3, improve the stress strength at the joint, and provide support when the wooden board bends, thereby increasing the load-bearing capacity of the connector.
[0021] Working principle: In use, grooves are first made at the joint of the two plates to fit the fixing block 1, screw 2, and fixing frame 3, respectively. Figure 1 and Figure 2 As shown, the fixing block 1, screw 2, and fixing frame 3 are then placed into the pre-cut slot. Next, the internal hexagonal end block 12 is turned using an external hexagonal wrench, causing it to rotate the worm gear 11. The worm gear 11 engages with the meshing connecting teeth 10, causing the threaded sleeve 9 to rotate. As the threaded sleeve 9 rotates, its inner wall engages with the outer wall of the screw 2 through a threaded connection, causing the screw 2 to be subjected to threaded action. Simultaneously, due to the limiting guide block 8's limitation within the limiting guide groove 7, the screw 2 cannot rotate. Therefore, under the action of the thread, the screw 2 will translate within the threaded sleeve 9 but will not rotate. When the threaded sleeve 9 translates, it changes the distance between the fixing block 1 and the clamping block 5. Continuing to rotate the wrench... The internal hexagonal end block 12 causes the clamping block 5 and the fixing block 1 to continuously move closer together, so as to continuously pull the two plates closer together and make them fit tightly until the two plates are tightly connected and flush. After locking multiple sets of connecting parts in this way, the positioning ring 16 on the rear side of the positioning cover 15 is inserted into the positioning groove 13, and the connecting rod 18 is inserted into the groove of the screw 2 on the plate. At the same time, the reinforcing seat 20 on the rear side of the decorative cover 19 is inserted into the fixing frame 3. The positioning cover 15 and the decorative cover 19 are respectively attached to the front side of the fixing block 1 and the fixing frame 3. Finally, the bolt 17 is inserted into the positioning ring 16, and the bolt 17 is tightened with a screwdriver according to the screw hole 14 until the positioning cover 15 and the fixing block 1 are attached and fixed.
[0022] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this 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 of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
[0023] In the description of this application, it should be understood that the terms "front", "rear", "left", "right", 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.
[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A self-locking connector for tabletop splicing, characterized in that: The system includes a fixing block (1) and a fixing frame (3), as well as a screw (2) fixedly connected to the fixing block (1). It also includes a positioning cover (15), a connecting rod (18), and a decorative cover plate (19) covering the front of the fixing block (1), screw (2), and fixing frame (3). The positioning cover (15) and decorative cover plate (19) are fixedly connected to the left and right sides of the connecting rod (18). The right end of the fixing frame (3) has a through hole (4) adapted to the screw (2). The clamping block (5) is provided inside. A guide hole (6) is provided in the middle of the clamping block (5). A threaded sleeve (9) is rotatably installed in the guide hole (6). The left end of the screw (2) passes through the through hole (4) and the guide hole (6) and is threadedly connected to the threaded sleeve (9). The outer wall of the threaded sleeve (9) is provided with connecting teeth (10) in an annular array. A worm (11) that meshes with the connecting teeth (10) is rotatably installed in the clamping block (5). An internal hexagonal end block (12) is fixedly provided at the front end of the worm (11).
2. The tabletop splicing self-locking connector according to claim 1, characterized in that: The fixing block (1) is circular, the left side of the fixing frame (3) is square, the right end of the fixing frame (3) and the clamping block (5) are both semi-circular, the diameter of the right semi-circular part of the fixing frame (3) is equal to the diameter of the fixing block (1), and the outer diameter of the clamping block (5) is adapted to the inner diameter of the fixing frame (3).
3. The tabletop splicing self-locking connector according to claim 1, characterized in that: The screw (2) has symmetrically provided limit guide grooves (7) on its upper and lower sides, and a limit guide block (8) that slides in the limit guide groove (7) is fixedly provided in the guide hole (6).
4. The tabletop splicing self-locking connector according to claim 1, characterized in that: The front end of the fixing block (1) is provided with a positioning groove (13), and the rear end of the positioning cover (15) is fixedly connected with a positioning ring (16) that matches the positioning groove (13). The front side of the fixing block (1) is provided with a screw hole (14), and the front end of the positioning cover (15) is provided with a bolt (17) that matches the screw hole (14).
5. A tabletop splicing self-locking connector according to claim 1, characterized in that: The longitudinal section height of the connecting rod (18) is adapted to the longitudinal section diameter of the screw (2), and the rear surface of the connecting rod (18) is provided with an arc-shaped groove (21) adapted to the screw (2).
6. The tabletop splicing self-locking connector according to claim 1, characterized in that: The rear surface of the decorative cover plate (19) is fixedly connected to a reinforcing seat (20), and the rear side of the reinforcing seat (20) is provided with a groove that matches the screw (2). The inner corners of the upper and lower ends of the reinforcing seat (20) are rounded, and the outer diameter of the rear end of the reinforcing seat (20) matches the inner diameter of the fixed frame (3).