Novel bolt pair

Abstract

The utility model relates to a novel bolt pair which comprises a bolt and a nut, the bolt comprises a bolt head and a stud, the stud is sleeved with a tensioning sleeve piece, the tensioning sleeve piece comprises a first tensioning half sleeve and a second tensioning half sleeve, and the first tensioning half sleeve and the second tensioning half sleeve are connected in a sleeved mode. The inner side of the end, away from the bolt head, of the first tensioning half sleeve and the inner side of the end, away from the bolt head, of the second tensioning half sleeve are provided with tensioning inclined faces, a frustum is integrally formed at one end of the nut, and the frustum comprises inclined driving faces used for being inserted into the inner sides of the tensioning inclined faces. And the frustum on the nut is matched with the expansion inclined surface of the expansion suite, so that the automatic expansion function is realized. By means of the design, the penetrating gap can be effectively eliminated, displacement or shaking of an object relative to the bolt is prevented, and the fixing effect and the structural stability are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a novel bolt pair. Background Technology

[0002] In existing mechanical assemblies and building structures, bolt assemblies are one of the main fasteners connecting two or more components. Traditional bolt assemblies typically consist of a bolt, nut, and optional washer, achieving a tight connection between parts through threaded engagement. However, in certain applications, especially those requiring high precision and stability, traditional bolt assemblies have limitations.

[0003] In traditional bolt assemblies, there is usually a certain gap between the bolt and the hole on the connected parts during installation. While this gap facilitates assembly, it can cause the parts to shift or wobble relative to the bolt during use, affecting the stability and safety of the overall structure.

[0004] While additional washers can be used to distribute pressure and reduce the risk of loosening, these measures cannot completely eliminate relative movement caused by perforation gaps. Especially in environments with frequent vibration or large load variations, this relative movement can exacerbate wear and even lead to connection failure.

[0005] Therefore, in response to the above-mentioned technical problems, this application makes improvements to enhance the fixing effect of the connected components and ensure that the connected components remain stable under various working conditions without any movement. Utility Model Content

[0006] This invention proposes a novel bolt pair that enhances the fixing effect of connected components, ensuring that the connected components remain stable under various working conditions and do not move, thus solving the aforementioned problems existing in the prior art.

[0007] The technical solution of this utility model is implemented as follows: a novel bolt assembly includes a bolt and a nut. The bolt includes a bolt head and a stud. A tensioning kit is sleeved on the stud. The tensioning kit includes a first tensioning half-sleeve and a second tensioning half-sleeve. An expansion inclined surface is formed on the inner side of the end of the first tensioning half-sleeve and the second tensioning half-sleeve away from the bolt head. A truncated cone is integrally formed on one end of the nut. The truncated cone includes an inclined driving surface for inserting into the inner side of the expansion inclined surface.

[0008] Preferably, a connecting member is provided between the first tensioning half-set and the second tensioning half-set, the connecting member being used to connect the first tensioning half-set and the second tensioning half-set together.

[0009] Preferably, the connector includes a connecting sheet for fixing one side of the first tensioning half-sleeve to one side of the second tensioning half-sleeve, and the connecting sheet has a V-shaped notch.

[0010] Preferably, the connector includes a first magnetic block fixed on both sides of the first tensioning half-sleeve and a second magnetic block fixed on both sides of the second tensioning half-sleeve, wherein the first magnetic block and the second magnetic block are attracted to each other.

[0011] Preferably, it also includes a positioning sleeve, which is fitted onto the stud and abuts against the bolt head. The positioning sleeve has a protrusion protruding toward the first tensioning half sleeve and the second tensioning half sleeve. Both the first tensioning half sleeve and the second tensioning half sleeve have a notch for the protrusion to engage.

[0012] Preferably, it also includes a gasket, which is fitted onto the outside of the frustum and abuts against the nut.

[0013] Preferably, both the first tensioning half-sleeve and the second tensioning half-sleeve have several anti-slip protrusions on their outer side walls.

[0014] In summary, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model achieves automatic tensioning by fitting a tensioning kit onto the stud and utilizing the engagement of the cone-shaped nut with the expansion-inclined surface of the tensioning kit. This design effectively eliminates through-hole gaps, prevents displacement or wobbling of objects relative to the bolt, and significantly improves the fixing effect and structural stability.

[0016] 2. The connector is designed to keep the first tensioning half-sleeve and the second tensioning half-sleeve as one unit, which makes it easy to fit over the stud during installation and ensures that it can smoothly enter the through hole of the component, thus simplifying the installation process.

[0017] 3. A connecting sheet with a V-shaped notch is used as the connector, which can be broken during the tensioning process, thereby ensuring that the tensioning kit can fully unfold and press against the inner wall of the perforation, improving the fixing effect.

[0018] 4. Using magnetic blocks as connectors allows the first and second tensioning half-sleeves to separate after tensioning and supports reuse, reducing maintenance costs and increasing service life. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is an exploded view of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the tensioning kit of the present invention in Embodiment 1;

[0023] Figure 4 This is a schematic diagram of the tensioning kit of this utility model in Embodiment 2;

[0024] Figure 5 This is a schematic diagram of the structure of the present invention for connecting two components without a positioning sleeve;

[0025] Figure 6 This is a schematic diagram of the structure of the present invention for connecting two components with a positioning sleeve.

[0026] In the diagram: 1. Bolt; 11. Bolt head; 12. Stud; 2. Nut; 21. Frustum; 22. Inclined drive surface; 31. First tensioning half-sleeve; 32. Second tensioning half-sleeve; 33. Opening inclined surface; 34. Notch; 35. Anti-slip protrusion; 4. Connecting sheet; 41. V-shaped notch; 51. First magnetic block; 52. Second magnetic block; 6. Positioning sleeve; 61. Protrusion; 7. Washer. Detailed Implementation

[0027] The following will refer to the appendix in the embodiments of this utility model. Figure 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. 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.

[0028] Example 1:

[0029] like Figures 1 to 3As shown, this utility model discloses a novel bolt assembly, including a bolt 1 and a nut 2. The bolt 1 includes a bolt head 11 and a stud 12. A tensioning kit is fitted onto the stud 12, specifically including a first tensioning half-sleeve 31 and a second tensioning half-sleeve 32. The inner side of the end of the first tensioning half-sleeve 31 and the second tensioning half-sleeve 32 away from the bolt head 11 has an opening inclined surface 33. Additionally, a truncated cone 21 is integrally formed on one end of the nut 2, and the truncated cone 21 includes an inclined driving surface 22 for insertion into the inner side of the opening inclined surface 33. This utility model achieves automatic tensioning by fitting a tensioning kit onto the stud 12 and utilizing the cooperation between the truncated cone 21 on the nut 2 and the opening inclined surface 33 of the tensioning kit. This design effectively eliminates through-hole gaps, prevents displacement or wobbling of objects relative to the bolt 1, and significantly improves the fixing effect and structural stability.

[0030] A connector is provided between the first tensioning half-set 31 and the second tensioning half-set 32 ​​to connect them together. In this embodiment, the connector specifically includes a connecting sheet 4, which is used to fix one side of the first tensioning half-set 31 to one side of the second tensioning half-set 32. The connecting sheet 4 has a V-shaped notch 41. By using the connecting sheet 4 with the V-shaped notch 41 as the connector, the first tensioning half-set 31 and the second tensioning half-set 32 ​​remain as one unit, making it easy to fit over the stud 12 during installation and ensuring that it can smoothly enter the through hole of the component to be connected. The connecting sheet 4 will be broken during the tensioning process, thereby ensuring that the tensioning kit can fully unfold and press against the inner wall of the component's through hole, improving the fixing effect.

[0031] Furthermore, this utility model also includes a positioning sleeve 6, which is used to fit onto the stud 12 and abut against the bolt head 11. Additionally, the positioning sleeve 6 has a protrusion 61 protruding towards the first tensioning half-sleeve 31 and the second tensioning half-sleeve 32, and both the first tensioning half-sleeve 31 and the second tensioning half-sleeve 32 have recesses 34 for the protrusion 61 to engage with. If this utility model is used to fix the two components as shown in Figure 5, without the presence of the positioning sleeve 6, it would be impossible to position the tensioning assembly correctly to simultaneously tension the components through the perforations. The function of the positioning sleeve 6 is to help ensure that the tensioning assembly is in the correct position. Figure 6 As shown, especially in the case of multiple connecting parts, all through holes can be tightened at the same time. However, it should be noted that if the tightening kit itself is in the right position, there is no need to put the positioning sleeve 6 on the stud 12.

[0032] In addition, this utility model also includes a washer 7, which is sleeved on the outside of the cone 21 and abuts against the nut 2. The nut 2 is pressed against the connected parts by the washer 7. The washer 7 should be selected with an appropriate thickness, so that the cone 21 on the nut 2 can just be inserted into the inner side of the lower end of the first tension half sleeve 31 and the second tension half sleeve 32, and can also press the washer 7 against the connected parts.

[0033] In this utility model, the outer walls of the first tensioning half-sleeve 31 and the second tensioning half-sleeve 32 are provided with a number of anti-slip protrusions 35. The anti-slip protrusions 35 enhance the friction between the tensioning kit and the inner wall of the connecting component through hole, further preventing the object from shifting relative to the bolt 1, and improving the overall stability and safety.

[0034] When using this utility model, the appropriate tensioning kit, nut 2 with a suitable cone 21, positioning sleeve 6 and washer 7 should be selected according to the perforation depth and diameter of the parts to be connected.

[0035] If the positioning sleeve 6 is used, first install the positioning sleeve 6 on the stud 12. If it is not needed, do not install it. Then, put the tensioning kit (the first tensioning half-sleeve 31 and the second tensioning half-sleeve 32 connected by the connector) on the stud 12. With the positioning sleeve 6, make the protrusion 61 on the positioning sleeve 6 enter the recess 34 on the first tensioning half-sleeve 31 and the second tensioning half-sleeve 32. Then, pass the bolt 1 with the tensioning kit through the through hole of the two parts to be connected.

[0036] Next, fit the appropriate washer 7 onto the outside of the frustum 21, then screw the nut 2 into the stud 12 and tighten it gradually. As the nut 2 tightens, the inclined drive surface 22 of the frustum 21 gradually inserts into the inner side of the expansion inclined surface 33 of the tensioning kit, pushing the first tensioning half-sleeve 31 and the second tensioning half-sleeve 32 to expand outward, thus tightening them against the inner wall of the perforation. If a connecting sheet 4 is used, the sheet will break during the tightening process; when the nut 2 is fully tightened, the tensioning kit has fully expanded and tightly fits against the inner wall of the perforation, eliminating the perforation gap and ensuring that the connected parts will not shift or wobble relative to the bolt 1, and the bolt head 11 and the washer 7 are pressed against both sides of the connected parts, such as Figure 6 As shown.

[0037] Example 2

[0038] like Figure 4As shown, this embodiment is basically the same as embodiment 1, except that the connector in this embodiment is not the connecting sheet 4. The connector in this embodiment includes a first magnetic block 51 fixed on both sides of the first tensioning half-sleeve 31 and a second magnetic block 52 fixed on both sides of the second tensioning half-sleeve 32. The first magnetic block 51 and the second magnetic block 52 attract each other. Using the magnetic blocks as connectors allows the first tensioning half-sleeve 31 and the second tensioning half-sleeve 32 to be separated after tensioning, and supports reuse, reducing maintenance costs and increasing service life.

[0039] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", 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 limiting the scope of protection of this utility model.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel bolt pair comprising a bolt and a nut, the bolt comprising a bolt head and a shank, characterized in that: The threaded stud is sleeved with a tensioning sleeve set, which comprises a first tensioning half sleeve and a second tensioning half sleeve, and the inner side of the end of the first tensioning half sleeve and the second tensioning half sleeve away from the bolt head is provided with an opening expanding inclined surface, and the end of the nut is integrally formed with a conical frustum, and the conical frustum comprises an inclined driving surface for being inserted into the inner side of the opening expanding inclined surface.

2. A novel bolt pair according to claim 1, characterized in that: The first tensioning half sleeve and the second tensioning half sleeve are provided with a connecting piece therebetween, which is used for connecting the first tensioning half sleeve and the second tensioning half sleeve together.

3. A novel bolt pair according to claim 2, characterized in that: The connecting piece comprises a connecting sheet, which is used for fixedly connecting one side of the first tensioning half sleeve and one side of the second tensioning half sleeve, and the connecting sheet is provided with a V-shaped notch.

4. A novel bolt pair according to claim 2, characterized in that: The connecting piece comprises a first magnetic attraction block fixed on the two sides of the first tensioning half sleeve and a second magnetic attraction block fixed on the two sides of the second tensioning half sleeve, and the first magnetic attraction block and the second magnetic attraction block are attracted together.

5. A novel bolt pair according to claim 1, characterized in that: Further comprising a positioning sleeve, which is sleeved on the threaded stud and abuts against the bolt head, and the positioning sleeve is provided with a protrusion protruding towards the first tensioning half sleeve and the second tensioning half sleeve, and the first tensioning half sleeve and the second tensioning half sleeve are both provided with a notch for matching the protrusion.

6. A novel bolt pair according to claim 1, characterized in that: Further comprising a gasket, which is sleeved on the outer side of the conical frustum and abuts against the nut.

7. A novel bolt pair according to claim 1, characterized in that: The outer side wall of the first tensioning half sleeve and the second tensioning half sleeve is both provided with a plurality of anti-skid protrusions.

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