A high-tensile fastening nut

Abstract

This utility model provides a high-tensile-strength fastening nut, relating to the field of furniture hardware technology. It includes a locking groove body and an expansion body. The bottom surface of the locking groove body has an insertion port. The lower parts of the first and second sides of the locking groove body are elastic. The lower parts of the third and fourth sides of the locking groove body have insertion holes with first serrations inside. The first side faces the second side, and the third side faces the fourth side. The expansion body is connected to the bottom surface of the locking groove body via a connecting strip. The expansion body is adapted to the insertion port and has two insertion parts with second serrations that are adapted to the first serrations. The connecting strip is plastic, driving the expansion body to move towards the insertion port so that the expansion body inserts into the insertion port and the insertion parts insert into the insertion holes, thereby causing the expansion body to push the first and second sides outward. This utility model can achieve a better expansion effect.

Description

Technical Field

[0001] This utility model relates to the field of furniture hardware technology, and in particular to a high-tensile fastening nut. Background Technology

[0002] A connector is a connecting mechanism used in furniture. It is used to assemble the finished product by installing and locking it onto the pre-processed furniture substrate. Furniture on the market generally uses "three-in-one connectors" or "four-in-one connectors" to connect the panels. However, these methods leave visible holes (eccentric wheels) in the furniture, making the connectors partially or completely visible after assembly. This reduces the overall aesthetics and durability of the furniture, and limits its design flexibility and design possibilities.

[0003] Furniture production and sales are gradually trending towards a front-end sales, back-end manufacturing model. The factory processes the panels, which are then transported to the end consumer for assembly. In this model, economy and convenience are crucial factors to consider both the production and installation processes. Currently, furniture on the market uses "three-in-one connectors" to join panels, which cannot be pre-installed in the factory and must be tightened with screws on-site. This easily leads to problems such as missing, incorrectly installed, or damaged hardware. Since the installation site is often far from the factory, these issues result in very high after-sales costs. Furthermore, the cumbersome on-site installation significantly increases labor costs and can lead to a poor delivery experience for the end consumer.

[0004] Post-production furniture transportation is a crucial part of the delivery service. Using pre-assembled "three-in-one connectors" prevents the flat packaging of panels during transport, increasing transportation costs and the probability of panel damage. This hinders the establishment of the furniture factory's delivery system and is detrimental to improving production efficiency.

[0005] With the widespread adoption of online shopping and efficient furniture sales methods like IKEA, easy packaging, tool-free assembly, and standardized installation of furniture are becoming increasingly important. Traditional three-in-one connectors require a more cumbersome process, more tools, and more steps, which limits their effectiveness in this sales model. The industry trend demands a convenient, robust, tool-free, and quick-assembly connector product.

[0006] The current trend of furniture customization is sweeping the industry, and non-standard size customization and non-standard product production bring greater processing difficulties to furniture manufacturers. The process of assembling cabinets using traditional "three-in-one connectors" requires high precision in hole machining and panel dimensional accuracy. Errors can easily lead to uneven panel placement after cabinet assembly.

[0007] Furniture products often encounter special situations such as after-sales repairs after delivery to the end consumer. Furniture using "three-in-one connectors" to join panels requires disassembling the entire cabinet. In residential environments, cumbersome after-sales service can easily lead to dissatisfaction among end consumers. Therefore, the need for connectors that allow for the removal of individual panels is becoming increasingly important.

[0008] Furthermore, furniture or cabinets assembled and delivered using "three-in-one connectors" often experience loosening of the internal cam lock components after prolonged use, sometimes even detaching from the pre-drilled holes in the panels. This can cause the cabinet structure to become loose and wobbly. Such issues require frequent tightening of the cam locks, making furniture maintenance cumbersome and burdensome. To address this stability issue, expansion joints are used. However, current expansion joints are mostly separate units, requiring pre-positioning for accurate expansion. Inaccurate positioning can easily lead to the expansion joint failing to expand or expanding poorly. Utility Model Content

[0009] To address the problems of component disarray and limitation caused by the separate design of expansion components in existing technologies, this invention provides a high-tensile-strength fastening nut that can achieve better expansion effect.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A high-tensile strength fastening nut, comprising:

[0012] The lock slot body has an insertion port on its bottom surface. The lower parts of the first and second sides of the lock slot body are elastic. The lower parts of the third and fourth sides of the lock slot body have insertion holes. The insertion holes are provided with first serrations. The first side is opposite to the second side, and the third side is opposite to the fourth side.

[0013] An expansion body is connected to the bottom surface of the locking groove body via a connecting strip. The expansion body is adapted to the insertion port. The expansion body is provided with two insertion parts, and the two insertion parts are provided with second serrations. The second serrations are adapted to the first serrations.

[0014] The connecting strip is plastic and drives the expansion body to move towards the socket so that the expansion body is inserted into the socket and the insertion part is inserted into the socket hole, thereby causing the expansion body to push the first side and the second side outward.

[0015] As described above, the high-tensile fastening nut further includes a groove on the top surface of the locking groove body, the groove including a locking part, and the ratio of the cross-sectional length of the locking part to the cross-sectional length of the locking groove body is 1:2 to 1:4.

[0016] In the high-tensile fastening nut described above, the ratio of the cross-sectional length of the locking portion to the cross-sectional length of the locking groove body is 1:3.

[0017] As described above, the high-tensile fastening nut further includes an insertion part, and two bosses are provided between the insertion part and the locking part. The two bosses are arranged opposite each other and are elastic.

[0018] As described above, the high-tensile fastening nut further includes a first inclined surface on the back of the first side, a second inclined surface on the back of the second side, and an expansion body having a third and a fourth inclined surface arranged opposite to each other. The third inclined surface is connected to the connecting strip, the third inclined surface is adapted to the first inclined surface, and the fourth inclined surface is adapted to the second inclined surface.

[0019] In one state, when the expansion body is inserted into the socket, the first inclined surface and the second inclined surface are subjected to a vertically upward compressive force, causing the first side surface and the second side surface to expand outward.

[0020] As described above, the high-tensile fastening nut further has reverse teeth on both the first and second sides.

[0021] As described above, the high-tensile fastening nut further features a cross-shaped socket and an overall cross-shaped expansion body.

[0022] As described above, the high-tensile fastening nut further has an inverted U-shaped socket.

[0023] Compared with the prior art, the advantages of this utility model are as follows:

[0024] 1. The locking groove body and the expansion body of this utility model are integrally cast, which avoids the components being scattered and can be produced by a single mold, thus reducing costs.

[0025] 2. The first sawtooth in the locking groove body of this utility model cooperates with the second sawtooth in the expansion body to prevent the two from separating accidentally.

[0026] 3. The locking part of the slot of this utility model has a large space, which can provide a certain degree of fault tolerance when installing the plate. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the fastening nut in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the fastening nut in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the fastening nut in an embodiment of the present invention;

[0031] Figure 4 This is a front view of the fastening nut in an embodiment of this utility model;

[0032] Figure 5 This is a top view of the fastening nut in an embodiment of this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the expansion body in an embodiment of this utility model;

[0034] Figure 7 This is a schematic diagram of the structure of the expansion body in an embodiment of this utility model;

[0035] Figure 8 This is a schematic diagram of the expansion body being inserted into the lock groove body in an embodiment of this utility model;

[0036] In the figure: 1. Locking groove body; 2. Expansion body; 3. Connecting strip; 4. Insertion port; 5. First side; 6. Second side; 7. Third side; 8. Fourth side; 9. Insertion hole; 10. First serration; 11. Insertion part; 12. Second serration; 13. Groove; 14. Insertion part; 15. Locking part; 16. Boss; 17. First inclined surface; 18. Second inclined surface; 19. Third inclined surface; 20. Fourth inclined surface; 21. Back teeth. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] Example:

[0039] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, in the embodiments of this utility model are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0040] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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.

[0041] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] This utility model provides a technical solution: a high-tensile fastening nut, comprising a locking groove body 1 and an expansion body 2. The bottom surface of the locking groove body 1 has an insertion port 4. The lower parts of the first side surface 5 and the second side surface 6 of the locking groove body 1 are elastic. The lower parts of the third side surface 7 and the fourth side surface 8 of the locking groove body 1 have insertion holes 9. The insertion holes 9 are provided with first serrations 10. The first side surface 5 is opposite to the second side surface 6, and the third side surface 7 is opposite to the fourth side surface 8. The expansion body 2 is connected to the bottom surface of the locking groove body 1 through a connecting strip 3. The expansion body 2 is adapted to the insertion port 4. The expansion body 2 is provided with two insertion parts 11, and the two insertion parts 11 are provided with second serrations 12. The second serrations 12 are adapted to the first serrations 10. The connecting strip 3 is plastic and drives the expansion body 2 to move towards the insertion port 4 so that the expansion body 2 is inserted into the insertion port 4 and the insertion parts 11 are inserted into the insertion holes 9, thereby causing the expansion body 2 to push the first side surface 5 and the second side surface 6 outward.

[0044] Specifically, see Figures 1 to 8 This fastening nut is integrally cast. The locking groove body 1 and the expansion body 2 are connected and fixed by the connecting strip 3. This avoids the problem of components easily falling apart due to traditional separate designs, and also allows for production using a single mold, reducing costs. The connecting strip 3 has a certain degree of plasticity, and the shape and size of the locking groove body 1 are adapted to the shape and size of the insertion port 4. Thus, the expansion body 2 can be manually moved to engage with the insertion port 4 of the locking groove body 1. Because the expansion body 2 is a single unit that engages and limits the insertion with the insertion port 4, and because the expansion body 2 has a certain area, while traditional insertion positioning mostly relies on point-to-point limiting, this fastening nut significantly increases the contact area during limiting, thereby reducing the occurrence of misalignment. At the same time, during this process, the insertion part 11 on the expansion body 2 is also inserted into the insertion hole 9 on the locking groove body 1. The first sawtooth 10 in the insertion hole 9 and the second sawtooth 12 on the insertion part 11 move in one direction to achieve self-locking, allowing the expansion body 2 to move upward but not downward, thereby improving the stability after expansion and thus obtaining a better expansion effect.

[0045] As an optional implementation, in some implementations, the fastening nut can also be set up separately according to actual use requirements, that is, the connection between the expansion body 2 and the locking groove body 1 is detachable, such as snap-fit ​​or plug-in.

[0046] As an optional implementation, in some embodiments, the top surface of the lock groove body 1 has a groove 13, the groove 13 includes a locking part 15, and the ratio of the cross-sectional length of the locking part 15 to the cross-sectional length of the lock groove body 1 is 1:2 to 1:4.

[0047] Specifically, see again Figure 5The locking part 15 of the slot 13 has ample space for adjusting the locking rod. This provides a certain degree of tolerance during plate installation to avoid installation errors and ensure effective cooperation between the locking rod and the locking slot body 1.

[0048] In the above embodiment, the ratio of the cross-sectional length of the locking part 15 to the cross-sectional length of the locking groove body 1 is 1:3. This ratio provides sufficient tolerance while meeting the locking force requirements during installation.

[0049] In the above embodiment, the slot 13 further includes an insertion portion 14, and two protrusions 16 are provided between the insertion portion 14 and the locking portion 15. The two protrusions 16 are arranged opposite to each other and are elastic. See again... Figure 5 The distance between the two bosses 16 is slightly smaller than the length of the locking rod to be installed. In this way, the elastic setting of the bosses 16 can ensure that the locking rod can pass through the locking part 15 under the action of external force, and can also prevent the locking rod from returning to the insertion part 14 without the action of external force, thereby improving the stability of the installation.

[0050] As an optional implementation, in some embodiments, the back of the first side 5 is provided with a first inclined surface 17, the back of the second side 6 is provided with a second inclined surface 18, and the expansion body 2 has a third inclined surface 19 and a fourth inclined surface 20 arranged opposite to each other. The third inclined surface 19 is connected to the connecting strip 3, the third inclined surface 19 is adapted to the first inclined surface 17, and the fourth inclined surface 20 is adapted to the second inclined surface 18. In one state, when the expansion body 2 is inserted into the socket 4, the first inclined surface 17 and the second inclined surface 18 are subjected to a vertically upward squeezing force, which drives the first side 5 and the second side 6 to expand outward.

[0051] Specifically, see again Figure 2 , Figure 3 , Figure 6 and Figure 7 The first inclined surface 17 inside the locking groove body 1 has the same inclination as the third inclined surface 19 of the expansion body 2, and the second inclined surface 18 inside the locking groove body 1 has the same inclination as the fourth inclined surface 20 of the expansion body 2. Thus, when the locking groove body 1 and the expansion body 2 move relative to each other, the first side surface 5 and the second side surface 6, being elastic, will expand outwards under force. When using ultra-thin plates with lower strength, the locking groove body 1 is installed on the edge of the plate, with its first side surface 5 and second side surface 6 facing the length direction of the plate, and its third side surface 7 and fourth side surface 8 facing the width direction of the plate. Expansion in the width direction can cause the edge of the plate to crack. Therefore, this fastening nut can ensure expansion and maintain the stability of the accessory installation while preventing the plate from being excessively squeezed, deformed, or damaged.

[0052] As an optional implementation, in some embodiments, both the first side surface 5 and the second side surface 6 are provided with reverse teeth 21. See again... Figure 4 This further increases the friction between the material and the inner wall of the substrate.

[0053] As an optional implementation, in some embodiments, the socket 4 is cross-shaped, and the entire expansion body 2 is cross-shaped. The cross structure provides good stability and facilitates positioning.

[0054] As an optional implementation, in some embodiments, the jack 9 is shaped like an inverted U. This shape allows for insertion with the plug part 11, and the arc-shaped top can evenly distribute vertical forces to both sides, avoiding local stress concentration and improving stability.

[0055] Instructions for using this high-tensile strength fastening nut: See again Figure 8 First, the expansion body is manually bent to the insertion port of the locking groove body. Then, the two are aligned and the expansion body is temporarily fixed on a flat surface. Finally, the locking groove body is tapped to cause relative movement between it and the expansion body (the locking groove body moves downwards). After they are inserted, the first and second sides of the locking groove body expand outwards, and at the same time, the insertion part and the insertion hole complete self-locking. In addition, the connecting strip of this fastening nut will break under force after the locking groove body and the expansion body are fully inserted.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] The above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made based on the substance of the content of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A high-tensile-strength fastening nut, characterized in that, include: The lock slot body has an insertion port on its bottom surface. The lower parts of the first and second sides of the lock slot body are elastic. The lower parts of the third and fourth sides of the lock slot body have insertion holes. The insertion holes are provided with first serrations. The first side is opposite to the second side, and the third side is opposite to the fourth side. An expansion body is connected to the bottom surface of the locking groove body via a connecting strip. The expansion body is adapted to the insertion port. The expansion body is provided with two insertion parts, and the two insertion parts are provided with second serrations. The second serrations are adapted to the first serrations. The connecting strip is plastic and drives the expansion body to move towards the socket so that the expansion body is inserted into the socket and the insertion part is inserted into the socket hole, thereby causing the expansion body to push the first side and the second side outward.

2. The high-tensile-strength fastening nut according to claim 1, characterized in that, The top surface of the lock groove body has a groove, the groove includes a locking part, and the ratio of the cross-sectional length of the locking part to the cross-sectional length of the lock groove body is 1:2 to 1:

4.

3. The high-tensile-strength fastening nut according to claim 2, characterized in that, The ratio of the cross-sectional length of the locking part to the cross-sectional length of the locking groove body is 1:

3.

4. The high-tensile-strength fastening nut according to claim 3, characterized in that, The slot also includes an insertion part, and two protrusions are provided between the insertion part and the locking part. The two protrusions are arranged opposite each other and are elastic.

5. The high-tensile-strength fastening nut according to claim 1, characterized in that, The back of the first side is provided with a first inclined surface, the back of the second side is provided with a second inclined surface, the expansion body has a third inclined surface and a fourth inclined surface that are disposed opposite to each other, the third inclined surface is connected to the connecting strip, the third inclined surface is adapted to the first inclined surface, and the fourth inclined surface is adapted to the second inclined surface; In one state, when the expansion body is inserted into the socket, the first inclined surface and the second inclined surface are subjected to a vertically upward compressive force, causing the first side surface and the second side surface to expand outward.

6. The high-tensile-strength fastening nut according to claim 1, characterized in that, Both the first side and the second side are provided with reverse teeth.

7. The high-tensile-strength fastening nut according to claim 1, characterized in that, The socket is cross-shaped, and the entire expansion body is cross-shaped.

8. The high-tensile-strength fastening nut according to claim 1, characterized in that, The socket is inverted U-shaped.

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