Spring locking type nut

Abstract

The utility model discloses a spring locking type nut, which comprises a nut main body, a nut mounting seat, a mounting groove, a spring, an upper opening part, a lower opening part and a positioning mechanism, the lower part of the nut main body is connected with the nut mounting seat, the nut main body and the nut mounting seat are of an integrated structure, the mounting groove is arranged in the nut main body, and the spring is arranged in the mounting groove. A spring is clamped in the installation groove, the outer side wall of the spring is tightly attached to the inner side wall of the nut body, an upper opening part is arranged on the side wall of the upper end of the nut body, a lower opening part is arranged on the side wall of the lower end of the nut body, the head of the spring is located at the upper opening part, and the tail of the spring is located at the lower opening part. Positioning mechanisms are symmetrically arranged on the outer side wall of the nut mounting seat, original vibration loosening force on a connected object can be converted into holding force through the spring, then the anti-loosening performance is improved, and the locking force on the connected object is further improved through the positioning mechanisms.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to the technical field of a spring locking nut. Background Art

[0002] Locking nuts are mainly used in machinery, aviation, aerospace, automobile and other fields. Their core function is to prevent bolts and screws from loosening under dynamic loads such as vibration and impact, thereby ensuring the normal operation of equipment and machinery. Specifically, locking nuts achieve self-locking by increasing the friction between bolts and screws to prevent loosening and falling off. In addition, locking nuts can also prevent bolts and screws from falling off due to corrosion and aging in special environments such as high temperature, high pressure, high humidity, corrosion, etc., to ensure the safe operation of equipment and machinery. Locking nuts can also improve work efficiency because they can reduce the maintenance time of machines and equipment, reduce maintenance costs, and protect the safe and stable operation of production equipment and factories. Therefore, locking nuts are widely used.

[0003] At present, the existing nuts generally include a nut body and a threaded through hole on the nut body. When in use, it is only necessary to align the threaded through hole of the nut with the external threaded part of the bolt or the screw and screw it in to achieve a fixed connection. However, when the object to be fixedly connected vibrates, the nut of this structure will cause a certain loosening of the fixed connection between the nut and the bolt or the screw, thereby affecting the reliability of the fixed connection of the connected object and further reducing the service life.

[0004] In order to solve the problems raised in the background technology, publication number CN202040189U discloses a locking nut, which includes a nut body, a threaded through hole is provided on the nut body, and a plurality of protrusions are pressed inwardly on the side wall of the nut body. The protrusions are pressed inwardly on the side wall of the nut body, so that when the nut is screwed into the bolt or screw, the protrusions can make the internal thread in the threaded through hole on the nut body better engage with the external thread of the bolt or screw, and when the connected object vibrates, the connected object can be well locked. However, this structure still has the following shortcomings:

[0005] 1. Although the structure is provided with a protrusion to increase the locking force between the nut and the connection, when a large vibration force is generated, the protrusion cannot convert the original vibration loosening force on the connection into a clamping force, which leads to a decrease in the anti-loosening performance and is prone to loosening after long-term use.

[0006] 2. The structure lacks a positioning mechanism and cannot further increase the locking force of the nut on the connection, thus affecting subsequent use. Utility Model Content

[0007] The purpose of the utility model is to solve the problems in the prior art and to propose a spring locking nut which can utilize a spring to convert the original vibrating loosening force on the connection object into a clamping force, thereby improving the anti-loosening performance and further improving the locking force on the connection object through a positioning mechanism.

[0008] To achieve the above-mentioned purpose, the utility model proposes a spring locking nut, comprising a nut body, a nut mounting seat, a mounting groove, a spring, an upper opening portion, a lower opening portion, and a positioning mechanism. A nut mounting seat is connected to the bottom of the nut body, and the nut body and the nut mounting seat are an integrated structure. A mounting groove is provided inside the nut body, and a spring is inserted into the mounting groove. The outer side wall of the spring is tightly attached to the inner side wall of the nut body, the upper end side wall of the nut body is provided with an upper opening portion, and the lower end side wall of the nut body is provided with a lower opening portion. The head of the spring is located at the upper opening portion, and the tail of the spring is located at the lower opening portion. The outer side wall of the nut mounting seat is symmetrically provided with a positioning mechanism.

[0009] Preferably, a threaded hole is provided inside the nut mounting seat, and an inner side wall of the threaded hole is provided with an internal thread.

[0010] Preferably, sliding grooves cooperating with the positioning mechanism are symmetrically provided on both sides of the interior of the nut mounting seat.

[0011] Preferably, the positioning mechanism includes a positioning rod, a rod head, and a locking plate. The positioning rod is movably arranged in a slide groove, one end of the positioning rod extends to the outside of the nut mounting seat and is connected to the rod head, and the other end of the positioning rod extends to the inside of the nut mounting seat and is connected to the locking plate, and the locking plate has an arc structure.

[0012] Preferably, the side walls of the rod head are symmetrically provided with clamping blocks, the outer side walls of the nut mounting seat are provided with clamping grooves matching with the clamping blocks, and the rod head is clamped in the clamping grooves through the clamping blocks.

[0013] Preferably, the card block and the card slot are both cylindrical structures.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model can improve the anti-loosening performance of the nut through the coordinated use of the nut body, the nut mounting seat, the mounting groove and the spring. First, the spring is installed in the interior of the nut body through the mounting groove, and then the nut body is installed on the connection object. When the connection object generates a large vibration, the contraction force of the spring will fit closely with the nut body, and then the original vibration loosening force on the connection object will be converted to the spring, thereby forming a clamping force on the nut body, thereby improving the anti-loosening performance of the nut body. The utility model is easy to install, reusable and has high working efficiency, and solves the problem that the protrusion cannot convert the original vibration loosening force on the connection object into a clamping force, thereby causing a decrease in anti-loosening performance.

[0016] 2. The utility model can further improve the locking force of the nut body on the connection object by using the slide groove, the positioning mechanism, the block and the groove in coordination. First, the rod head is pushed, and the rod head moves forward, thereby driving the positioning rod to move, and the positioning rod drives the locking plate to move until the locking plate and the outer part of the connection object are firmly locked. At this time, the block on the rod head is inserted into the groove, thereby fixing the positioning mechanism on the nut mounting seat, and using the locking plate to firmly lock the connection object, thereby further improving the locking force of the nut body on the connection object, extending the service life of the nut body, and solving the problem that the nut lacks a positioning mechanism and cannot further improve the locking force of the nut on the connection object. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a spring locking nut of the utility model;

[0018] Figure 2 It is a schematic diagram of a spring of a spring locking nut of the utility model;

[0019] Figure 3 It is a rear view of a spring locking nut of the utility model;

[0020] Figure 4 It is a cross-sectional view of a nut mounting seat of a spring locking nut of the utility model;

[0021] In the figure: 1-nut body, 2-nut mounting seat, 3-mounting groove, 4-spring, 5-upper opening, 6-lower opening, 7-positioning mechanism, 71-positioning rod, 72-rod head, 73-locking plate, 8-threaded hole, 9-internal thread, 10-slide groove, 11-block, 12-slot. DETAILED DESCRIPTION

[0022] See also Figure 1 , Figure 2 , Figure 3The utility model discloses a spring locking nut, comprising a nut body 1, a nut mounting seat 2, a mounting groove 3, a spring 4, an upper opening portion 5, a lower opening portion 6, and a positioning mechanism 7. The nut body 1 is connected to the nut mounting seat 2 below, and the nut body 1 and the nut mounting seat 2 are an integrated structure. The nut body 1 is provided with a mounting groove 3 inside, and a spring 4 is inserted into the mounting groove 3. The outer side wall of the spring 4 is tightly attached to the inner side wall of the nut body 1. The upper end side wall of the nut body 1 is provided with an upper opening portion 5, and the lower end side wall of the nut body 1 is provided with a lower opening portion 6. The head of the spring 4 is located at the upper opening portion 5, and the tail of the spring 4 is located at the lower opening portion 6. The outer side wall of the nut mounting seat 2 is symmetrically provided with a positioning mechanism 7. First, the spring 4 is installed inside the nut body 1 through the mounting groove 3, and then the nut body 1 is installed on the connection object. When the connection object generates a large vibration, the contraction force of the spring 4 will fit closely with the nut body 1, and then the original vibration loosening force on the connection object will be converted to the spring 4, thereby forming a clamping force on the nut body 1, thereby improving the anti-loosening performance of the nut body 1, and the nut body 1 is easy to install, reusable, and has high work efficiency.

[0023] See also Figure 4 The utility model provides a spring locking nut, wherein a threaded hole 8 is provided inside the nut mounting seat 2, and an inner side wall of the threaded hole 8 is provided with an internal thread 9. Both sides of the interior of the nut mounting seat 2 are symmetrically provided with slide grooves 10 that cooperate with the positioning mechanism 7. The positioning mechanism 7 includes a positioning rod 71, a rod head 72, and a locking piece 73. The positioning rod 71 is movably arranged in the slide groove 10, and one end of the positioning rod 71 extends outward from the nut mounting seat 2 and is connected to the rod head 72, and the other end of the positioning rod 71 extends outward from the nut mounting seat 2 and is connected to the locking piece 73. The locking piece 73 is in an arc structure, and the side walls of the rod head 72 are symmetrically provided with a card block 11. The outer wall of the nut mounting seat 2 is provided with a slot 12 that cooperates with the block 11, and the rod head 72 is connected to the slot 12 through the block 11. The block 11 and the slot 12 are both cylindrical structures. First, the rod head 72 is pushed, and the rod head 72 moves forward, thereby driving the positioning rod 71 to move, and the positioning rod 71 drives the locking plate 73 to move until the locking plate 73 is firmly locked with the outer top of the connection object. At this time, the block 11 on the rod head 72 is inserted into the slot 12, thereby fixing the positioning mechanism 7 on the nut mounting seat 2, and using the locking plate 73 to firmly lock the connection object, thereby further improving the locking force of the nut body 1 on the connection object and extending the service life of the nut body 1.

[0024] Working process of this utility model:

[0025] The spring locking nut of the utility model is first installed in the inner part of the nut body 1 through the installation groove 3, and then the nut body 1 is installed on the connection object. When the connection object generates a large vibration, the contraction force of the spring 4 will fit closely with the nut body 1, and then the original vibration loosening force on the connection object is converted to the spring 4, thereby forming a clamping force on the nut body 1, thereby improving the anti-loosening performance of the nut body 1, and then pushing the rod head 72, the rod head 72 moves forward, and then drives the positioning rod 71 to move, and the positioning rod 71 drives the locking plate 73 to move until the locking plate 73 is firmly locked with the outer top of the connection object. At this time, the clamping block 11 on the rod head 72 is clamped into the clamping groove 12, thereby realizing the fixing of the positioning mechanism 7 on the nut mounting seat 2, and using the locking plate 73 to firmly lock with the connection object, thereby further improving the locking force of the nut body 1 on the connection object and extending the service life of the nut body 1.

[0026] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A spring locking nut, characterized in that: The invention comprises a nut body (1), a nut mounting seat (2), a mounting groove (3), a spring (4), an upper opening portion (5), a lower opening portion (6), and a positioning mechanism (7). The nut body (1) is connected to the nut mounting seat (2) below, and the nut body (1) and the nut mounting seat (2) are an integrated structure. The nut body (1) is provided with a mounting groove (3) inside, and a spring (4) is inserted into the mounting groove (3). The outer side wall of the spring (4) is tightly attached to the inner side wall of the nut body (1). The upper end side wall of the nut body (1) is provided with an upper opening portion (5), and the lower end side wall of the nut body (1) is provided with a lower opening portion (6). The head of the spring (4) is located at the upper opening portion (5), and the tail of the spring (4) is located at the lower opening portion (6). The outer side wall of the nut mounting seat (2) is symmetrically provided with a positioning mechanism (7).

2. A spring locking nut according to claim 1, characterized in that: A threaded hole (8) is provided inside the nut mounting seat (2), and an inner side wall of the threaded hole (8) is provided with an internal thread (9).

3. A spring locking nut according to claim 2, characterized in that: Slide grooves (10) that match the positioning mechanism (7) are symmetrically provided on both sides of the nut mounting seat (2).

4. A spring locking nut as claimed in claim 3, characterized in that: The positioning mechanism (7) comprises a positioning rod (71), a rod head (72), and a locking plate (73); the positioning rod (71) is movably arranged in the slide groove (10); one end of the positioning rod (71) extends outward from the nut mounting seat (2) and is connected to the rod head (72); the other end of the positioning rod (71) extends outward from the nut mounting seat (2) and is connected to the locking plate (73); the locking plate (73) is in an arc structure.

5. A spring locking nut as claimed in claim 4, characterized in that: The side wall of the rod head (72) is symmetrically provided with a clamping block (11), the outer side wall of the nut mounting seat (2) is provided with a clamping groove (12) matched with the clamping block (11), and the rod head (72) is clamped in the clamping groove (12) through the clamping block (11).

6. A spring locking nut according to claim 5, characterized in that: The clamping block (11) and the clamping slot (12) are both cylindrical structures.

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