Unequal-pitch bolt and nut structure

Abstract

The utility model provides a bolt and nut structure with unequal screw pitches, which belongs to the technical field of mechanical fasteners and comprises a first bolt and an unequal screw pitch mechanism, the unequal screw pitch mechanism is arranged in the first bolt and comprises the first bolt, a sliding groove, a butt joint clamping block and a second bolt, the sliding groove is formed in the first bolt, the butt joint clamping block is connected in the sliding groove in a sliding mode, and the lower end of the butt joint clamping block is fixedly connected with a second bolt. According to the device, the unequal-pitch structure is additionally arranged, so that the stress of the thread teeth is more uniform, and in the loading process, due to the change of the pitch, the stress conditions of all circles of thread teeth are different; therefore, various problems, such as looseness and breakage, caused by uneven stress in the traditional equal-pitch thread are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical fasteners, and in particular relates to a bolt and nut structure with unequal pitches. Background Art

[0002] In the prior art, bolts and nuts are standard parts that are widely used in modern industry due to their compact structure, low production cost, flexible installation, and reusability. Usually, in situations where static loads and temperature changes are not large, threaded connections can be effectively locked through preload.

[0003] The authorization publication number "CN 219366551 U" records "a bolt and nut anti-loosening structure". The utility model discloses a bolt and nut anti-loosening structure, including a nut, a bolt and an anti-loosening member; wherein a first connecting hole is provided on the nut; wherein a second connecting hole is provided on an axial end of the bolt that matches the nut; and the anti-loosening member is configured as a bending member, one end of the anti-loosening member is inserted through the first connecting hole, and the other end of the anti-loosening member is inserted through the second connecting hole. The anti-loosening member is respectively inserted through the first connecting hole and the second connecting hole, thereby increasing the force between the bolt and the nut, limiting the relative rotation between the bolt and the nut, not only effectively achieving the purpose of anti-loosening, but also simplifying the installation process, effectively improving the installation efficiency.

[0004] The above patent can solve the problem that the other end of the anti-loosening member is inserted into the second connecting hole. The anti-loosening member is respectively inserted into the first connecting hole and the second connecting hole, thereby increasing the force between the bolt and the nut and limiting the relative rotation between the bolt and the nut. It not only effectively achieves the purpose of anti-loosening, but also simplifies the installation process and effectively improves the installation efficiency. However, the above patent has certain defects when used. The traditional bolt and nut structure lacks the design of unequal pitch mechanism, and cannot realize the complex flow state of the material inside the screw, thereby failing to achieve higher transmission efficiency. At the same time, it also fails to use the design of different positions and angles of the spiral to realize the transmission of materials of different shapes and sizes, so its adaptability and flexibility are limited. Utility Model Content

[0005] The purpose of the utility model is to provide a bolt and nut structure with unequal pitches, aiming to solve the problem that the traditional bolt and nut structure in the prior art cannot realize the complex flow state of the material inside the screw due to the lack of unequal pitch mechanism design, thereby failing to achieve higher transmission efficiency. At the same time, it also fails to utilize the design of different positions and angles of the spiral to realize the transmission of materials of different shapes and sizes, so its adaptability and flexibility are limited.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bolt and nut structure with unequal pitches comprises:

[0008] First bolt;

[0009] An unequal pitch mechanism is arranged in the first bolt, and the unequal pitch mechanism includes a first bolt, a sliding groove, a docking block and a second bolt. The sliding groove is opened in the first bolt, the docking block is slidably connected in the sliding groove, and the lower end of the docking block is fixedly connected to the second bolt.

[0010] As a preferred solution of the utility model, a nut is rotatably connected to the threaded surface of the first bolt, and two side ends of the nut are respectively fixedly connected to two first connectors.

[0011] As a preferred solution of the utility model, two first rotating shafts are rotatably connected in the two first connectors respectively, and two auxiliary brackets are fixedly connected to the circumferential surfaces of the two first rotating shafts respectively.

[0012] As a preferred solution of the utility model, two second rotating shafts are respectively fixedly connected in the two auxiliary brackets, and a plurality of second connectors are respectively fixedly connected to the circumferential surfaces of the two second rotating shafts.

[0013] As a preferred solution of the present invention, the lower ends of the plurality of second connectors are respectively fixedly connected with two anti-loosening fasteners.

[0014] As a preferred solution of the utility model, two fixing grooves are respectively provided in the two anti-loosening fixers.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. In this solution, two anti-loosening retainers are fixedly mounted on the lower ends of the multiple second connectors. This design ensures that when the fastener is subjected to vibration or is in an unstable environment, the retainer can tightly bite the contact surface to provide additional friction to prevent the nut from loosening due to vibration. When the second connector adjusts its position with the rotation of the auxiliary bracket and the second shaft, the anti-loosening retainer also changes its contact angle accordingly, ensuring that it can provide effective anti-loosening effect in any orientation.

[0017] 2. In this scheme, the present device is used to solve the problem that the traditional bolt and nut structure cannot realize the complex flow state of the material inside the screw due to the lack of unequal pitch mechanism design, thus failing to achieve higher transmission efficiency. At the same time, it also fails to utilize the design of different positions and angles of the spiral to realize the transmission of materials of different shapes and sizes, so its adaptability and flexibility are limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a first side perspective view of the utility model;

[0020] Figure 2 It is an exploded view of the utility model;

[0021] Figure 3 It is a cross-sectional view of the utility model;

[0022] Figure 4 It is a second side perspective view of the utility model;

[0023] In the figure: 1. first bolt; 2. sliding groove; 3. docking block; 4. second bolt; 5. nut; 6. first connector; 7. first rotating shaft; 8. auxiliary bracket; 9. second rotating shaft; 10. second connector; 11. anti-loosening fastener; 12. fixing groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] See also Figure 1-Figure 4 , the utility model provides the following technical solutions:

[0027] A bolt and nut structure with unequal pitches comprises:

[0028] First bolt 1;

[0029] The unequal pitch mechanism is arranged in the first bolt 1, and the unequal pitch mechanism includes the first bolt 1, the sliding groove 2, the docking block 3 and the second bolt 4. The sliding groove 2 is opened in the first bolt 1, the docking block 3 is slidably connected in the sliding groove 2, and the lower end of the docking block 3 is fixedly connected with the second bolt 4.

[0030] In a specific embodiment of the utility model, the unequal pitch bolt and nut 5 structure uses the first bolt 1 as the basic component, and a sliding groove 2 is designed inside it. This structure allows the docking block 3 to be slidably connected inside it, providing flexible adjustment space for the access of the second bolt 4. The second bolt 4 fixedly connected to the lower end of the docking block 3 can adjust its position in the sliding groove 2 according to actual needs, thereby changing the relative position between the first bolt 1 and the second bolt 4 to achieve the effect of unequal pitch. This design enables the bolt assembly to adapt to more varied application scenarios, such as fastening in a limited space, or fastening materials of different thicknesses, thereby improving the versatility and adaptability of the fastener. At the same time, by adjusting the position of the docking block 3, the fastening force can be fine-tuned to meet the requirements of different fastening strengths, thereby enhancing the stability and safety of the structure.

[0031] For details, please refer to Figure 1-Figure 4 A nut 5 is rotatably connected to the threaded surface of the first bolt 1, and two side ends of the nut 5 are respectively fixedly connected to two first connectors 6.

[0032] In this embodiment: the threaded surface of the first bolt 1 forms a rotational connection with the nut 5, which means that the nut 5 can rotate along the thread of the bolt to achieve tightening or loosening of the bolt, and two first connectors 6 are fixedly assembled on both side ends of the nut 5. These connectors not only enhance the structural stability of the nut 5 itself, but also provide additional connection points.

[0033] For details, please refer to Figure 1-Figure 4 Two first rotating shafts 7 are rotatably connected in the two first connectors 6 , and two auxiliary brackets 8 are fixedly connected to the circumferential surfaces of the two first rotating shafts 7 .

[0034] In this embodiment: the two first connectors 6 are each equipped with a first rotating shaft 7, which can rotate freely in the connector, and two auxiliary brackets 8 are fixedly installed on the circumferential surface of the first rotating shaft 7. This design allows the auxiliary brackets 8 to change position following the rotation of the first rotating shaft 7, providing additional support and guiding for the rotation of the nut 5. During the tightening or disassembly process, the auxiliary brackets 8 can resist the surrounding structure to prevent the nut 5 from shifting, thereby ensuring the smoothness and accuracy of the rotation and reducing the problem of loose tightening caused by shaking or inaccurate positioning.

[0035] For details, please refer to Figure 1-Figure 4 Two second rotating shafts 9 are respectively fixedly connected in the two auxiliary brackets 8 , and a plurality of second connectors 10 are respectively fixedly connected to the circumferential surfaces of the two second rotating shafts 9 .

[0036] In this embodiment: the internal structure of the two auxiliary brackets 8 is respectively fixedly assembled with a second rotating shaft 9, and the circumferential surfaces of these rotating shafts are respectively fixedly connected to multiple second connectors 10. This design means that when the auxiliary bracket 8 rotates with the first rotating shaft 7, the second rotating shaft 9 will also rotate accordingly, thereby driving the second connector 10 to change its orientation within a certain range. These connectors can be docked with external tools or fixed points to provide additional support and stability for the tightening operation.

[0037] For details, please refer to Figure 1-Figure 4 The lower ends of the plurality of second connectors 10 are respectively fixedly connected with two anti-loosening fixers 11 .

[0038] In this embodiment: the lower ends of multiple second connectors 10 are each fixedly equipped with two anti-loosening fixtures 11. This design ensures that when the fastener is subjected to vibration or is in an unstable environment, the fixture can tightly bite the contact surface to provide additional friction to prevent the nut 5 from loosening due to vibration. When the second connector 10 adjusts its position with the rotation of the auxiliary bracket 8 and the second shaft 9, the anti-loosening fixture 11 also changes its contact angle accordingly to ensure that it can provide effective anti-loosening effect in any orientation.

[0039] For details, please refer to Figure 1-Figure 4 Two fixing grooves 12 are respectively provided in the two anti-loosening fixing devices 11 .

[0040] In the present embodiment: two fixing grooves 12 are respectively provided inside the two anti-loosening fixers 11, and the design of these fixing grooves 12 is intended to enhance the connection stability between the fixers and the contact surface. When the anti-loosening fixers 11 are in contact with the surface of the target object, the fixing grooves 12 can be embedded in the unevenness of the surface, thereby effectively preventing the fasteners from loosening due to vibration or external force by increasing the contact area and the bite force.

[0041] The working principle and use process of the utility model are as follows: when using the bolt and nut 5 structure with unequal pitches, first, the position of the docking block 3 in the sliding groove 2 in the first bolt 1 is adjusted as needed, so as to set the pitch between the first bolt 1 and the second bolt 4 to adapt to materials of different thicknesses or specific tightening requirements. Next, the nut 5 is screwed into the threaded surface of the first bolt 1. The first connectors 6 on both sides of the nut 5 provide additional connection points for convenient tightening operations using tools. During the tightening process, the first rotating shaft 7 drives the auxiliary bracket 8 to rotate, and the second rotating shaft 9 in the auxiliary bracket 8 rotates accordingly, and the connected second connector 10 adjusts its position accordingly to ensure the stability and guidance of the nut 5 during the tightening process. At the same time, the second connecting shaft 7 is connected to the auxiliary bracket 8. The anti-loosening fixture 11 at the lower end of the connector 10 is tightly engaged with the contact surface, and the friction is enhanced by the fixing groove 12 to prevent the fastener from loosening under vibration or external force. The entire device is linked at multiple levels, which not only realizes the flexible adjustment of unequal pitches, but also improves the efficiency, stability and safety of the fastening operation. It is particularly suitable for high-strength fastening requirements under complex working conditions. The use of this device solves the problem that the traditional bolt and nut 5 structure lacks the design of unequal pitch mechanism, and cannot realize the complex flow state of the material inside the screw, thereby failing to achieve higher transmission efficiency. At the same time, it also fails to utilize the design of different positions and angles of the spiral to realize the transmission of materials of different shapes and sizes, so its adaptability and flexibility are limited.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bolt and nut structure with unequal pitch, characterized in that include: A first bolt (1); An unequal pitch mechanism is provided in a first bolt (1), comprising the first bolt (1), a sliding groove (2), a docking block (3) and a second bolt (4), wherein the sliding groove (2) is provided in the first bolt (1), the docking block (3) is slidably connected in the sliding groove (2), and the lower end of the docking block (3) is fixedly connected with the second bolt (4).

2. The bolt and nut structure with unequal pitch according to claim 1, characterized in that: A nut (5) is rotatably connected to the threaded surface of the first bolt (1), and two side ends of the nut (5) are respectively fixedly connected to two first connectors (6).

3. The bolt and nut structure with unequal pitch according to claim 2, characterized in that: Two first rotating shafts (7) are rotatably connected in the two first connectors (6), and two auxiliary brackets (8) are fixedly connected to the circumferential surfaces of the two first rotating shafts (7).

4. The bolt and nut structure with unequal pitch according to claim 3, characterized in that: Two second rotating shafts (9) are respectively fixedly connected inside the two auxiliary brackets (8), and a plurality of second connectors (10) are respectively fixedly connected to the circumferential surfaces of the two second rotating shafts (9).

5. The bolt and nut structure with unequal pitch according to claim 4, characterized in that: The lower ends of the plurality of second connectors (10) are respectively fixedly connected to two anti-loosening fixers (11).

6. The bolt and nut structure with unequal pitch according to claim 5, characterized in that: Two fixing grooves (12) are respectively provided in the two anti-loosening fixers (11).

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