Anti-loosening bolt

Abstract

The anti-loosening bolt comprises a bolt head, a first main rod is arranged on the right side of the bolt head, a first thread set is arranged in the first main rod, a connecting rod is installed at the right end of the first main rod, and a second main rod is arranged on the right side of the connecting rod; the connecting piece is arranged on the right side of the first main rod, and a nut body is arranged on the outer side of the first main rod; the anti-theft assembly is arranged in the bolt head, a connecting base is arranged on the outer side of the anti-theft assembly, an anti-theft structure is arranged on the outer side of the connecting base, the anti-theft assembly comprises a limiting rod, a spring body and a connecting block, the spring body is arranged on the outer side of the limiting rod, and the connecting block is installed on the front side of the spring body. According to the anti-loosening bolt, the thread grooves in the opposite directions are formed in the same bolt so that loosening between the bolt and the nut can be prevented, and meanwhile the anti-theft structure is additionally arranged so that the anti-theft effect can be effectively achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field, concretely is a kind of bolt of anti-loosening. BACKGROUND

[0002] When assembling large machines, bolts are needed to fix them, and bolt assemblies are used to fasten and connect two parts with through holes, which are widely used in production and life, and have become an indispensable part in industrial production. However, the parts are prone to loosen after being tightened by the bolt assembly, especially in high-speed vehicles and continuously running machines. During long-term machine operation, different degrees of vibration may occur, which may cause the bolt to loosen or even fall off. If the fastening bolt of the running machine falls off, it may affect the safety of personnel and cause great property loss. Therefore, it is very important to design a bolt that can prevent loosening, such as:

[0003] The utility model discloses a kind of double hexagonal bolt head bolts, the utility model discloses the elastic force of pressure spring is extruded fixed block side wall's limit rod to bolt body, make the nut fastening in the outer side wall of bolt body, through the limit rod side wall of sawtooth is engaged in the thread groove of bolt body, further prevent nut from separating from bolt body when vibrating;The utility model discloses by pushing push rod, make push rod slide to the direction of limit rod, make fixed block slide away from bolt body, make pressure spring contract and generate elastic force, simultaneously make limit rod slide away from bolt body, at this time, it can rotate bolt body, make bolt body move in nut interior and carry out the fastening of implement, by stopping pushing push rod, by the elastic force of pressure spring push fixed block and limit rod reset, make limit rod extrude bolt body again, make bolt body and nut fixed to implement fastening.

[0004] In combination with the existing scheme and actual production and processing, the existing bolt has the following defects, such as:

[0005] 1. Although the existing bolt can prevent the nut from separating from the bolt body when vibrating, it is difficult to avoid loosening of the bolt and the nut when the bolt is subjected to the same force as the thread direction when the outer thread direction of the bolt is consistent. By providing opposite direction thread grooves on the same bolt, loosening between the bolt and the nut can be prevented.

[0006] 2. Although the existing bolt can fasten the implement by the bolt body and the nut, it is easy to be quickly removed and stolen by people. The anti-theft structure can play a role in preventing theft of the bolt. Therefore, the utility model provides a bolt that can prevent loosening to solve the above problems. UTILITY MODEL CONTENTS

[0007] The utility model discloses a purpose lies in providing a kind of anti-loose bolt, the anti-loose bolt, by being set up opposite direction thread groove on same bolt can prevent loose between bolt and nut, simultaneously, install anti-theft structure can effectively play the effect of theft prevention.

[0008] To realize the above-mentioned purpose, the utility model provides the following technical scheme: an anti-loose bolt, including bolt head, the right side of the bolt head is provided with first main rod, and first threaded group is arranged in the inside of first main rod, the right end of first main rod is installed with connecting rod, and the right side of connecting rod is provided with second main rod, and second threaded group is arranged in the inside of second main rod;

[0009] Connecting piece is arranged at the right side of first main rod, and the outside of first main rod is provided with nut body;

[0010] Anti-theft assembly is arranged in the inside of bolt head, and the outside of anti-theft assembly is provided with connecting seat, and the outside of connecting seat is provided with anti-theft structure.

[0011] Preferably, the first threaded group is arranged at equal intervals on the first main rod, and the orientation of the first threaded group is opposite to the orientation of the second threaded group.

[0012] Preferably, the diameter of the connecting rod is smaller than the diameter of the connecting piece, and the connecting rod is connected to the connecting piece.

[0013] Preferably, the anti-theft assembly includes a limiting rod, a spring body, and a connecting block, the outside of the limiting rod is provided with the spring body, and the front side of the spring body is installed with the connecting block.

[0014] Preferably, the connecting block is slidably connected to the bolt head, and the connecting block is symmetrically arranged about the connecting seat on the inside.

[0015] Preferably, the outside of the connecting seat is provided with a limiting plate of disc structure, and the connecting seat is symmetrically arranged about the center line of the bolt head, and the connecting seat is in the shape of a trapezoid.

[0016] Preferably, the outside of the bolt head is connected with a protective cover, the inside of the protective cover is provided with positioning strips distributed at equal angles, and the positioning strips are connected to positioning grooves on the outside of the bolt head at equal angles.

[0017] Preferably, the left side of the protective cover is provided with an anti-theft cap in the shape of a semicircle, and the diameter of the protective cover is larger than the diameter of the bolt head.

[0018] Preferably, the anti-theft structure includes a limiting plate arranged on the outside of the connecting seat, and the limiting plate is connected to the protective cover arranged in the protective cover.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the anti-loosening bolt can prevent loosening between the bolt and the nut by opening thread grooves in opposite directions on the same bolt, and at the same time, the addition of an anti-theft structure can effectively play an anti-theft role.

[0020] 1. It is provided with a first thread group and a second thread group. The first thread group is opened at equal intervals inside the first main rod, and the second thread group is opened at equal intervals inside the second main rod. The orientation of the first thread group is opposite to that of the second thread group. The bolt body, consisting of the bolt head, the first main rod, the connecting rod, and the second main rod, is screwed in with the nut body. The direction of the nut body when connected to the first main rod is opposite to that when connected to the second main rod, which facilitates the anti-loosening function of the bolt.

[0021] 2. It is equipped with a cross block and a positioning strip. By aligning the center of the protective cover with the center of the bolt head, the cross block with the cross groove on the left side of the bolt head, and the positioning strip with the positioning groove, the protective cover is pushed and the positioning strip and positioning groove are engaged. After the cross block connected to the protective cover is engaged with the bolt head, it is easy to realize the positioning connection between the reinforcing bolt and the anti-theft structure.

[0022] 3. It is equipped with an anti-theft assembly and an anti-theft cap. By pressing the limiting plate, the spring body is compressed. When the outer side of the limiting plate is flush with the outer side of the bolt head, the protective cover is pushed until the limiting plate engages with the limiting groove opened in the protective cover. The protective cover is restricted to the outer side of the bolt head. The end of the protective cover away from the bolt head is connected to the anti-theft cap with a hemispherical structure, which facilitates the anti-theft function of the bolt. Attached Figure Description

[0023] Figure 1 This is a frontal cross-sectional view of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the connection between the bolt head and the positioning strip of this utility model;

[0025] Figure 3 This is a schematic diagram of the overall exploded structure of the connection between the first main rod and the nut body of this utility model;

[0026] Figure 4 This is a schematic diagram of the overall structure of the anti-theft assembly and the connecting seat of this utility model;

[0027] Figure 5 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0028] In the figure: 1, bolt head; 2, first main rod; 3, first thread group; 4, connecting rod; 5, second main rod; 6, second thread group; 7, connecting piece; 8, nut body; 9, anti-theft assembly; 901, limiting rod; 902, spring body; 903, connecting block; 10, connecting seat; 11, limiting plate; 12, protective cover; 13, limiting groove; 14, "cross" block; 15, positioning strip; 16, anti-theft cap; 17, positioning groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] Please refer to Figures 1-5 The utility model provides a technical scheme: an anti-loose bolt, which comprises a bolt head 1, a first main rod 2, a first thread group 3, a connecting rod 4, a second main rod 5, a second thread group 6, a connecting piece 7, a nut body 8, an anti-theft assembly 9, a limiting rod 901, a spring body 902, a connecting block 903, a connecting seat 10, a limiting plate 11, a protective cover 12, a limiting groove 13, a "cross" block 14, a positioning strip 15, an anti-theft cap 16 and a positioning groove 17.

[0031] Specifically as Figure 1 And Figure 3 shown, first, the inside of the first main rod 2 is equally spaced to form the first thread group 3, and the inside of the second main rod 5 is equally spaced to form the second thread group 6; the direction of the first thread group 3 is opposite to the direction of the second thread group 6; the first main rod 2 and the second main rod 5 are connected through the connecting rod 4; the diameter of the connecting rod 4 is smaller than the diameter of the connecting piece 7; the outer side of the connecting rod 4 is clamped and connected with the connecting piece 7 in a circular ring structure; when the bolt composed of the bolt head 1, the first main rod 2, the connecting rod 4 and the second main rod 5 is screwed well, the center of the second main rod 5 is aligned with the center of the nut body 8; the nut body 8 is screwed into the outer end of the second main rod 5; the nut body 8 is tightly connected with the bolt; when the nut body 8 is connected with the first main rod 2, the turning direction is opposite to that when the nut body 8 is connected with the second main rod 5; the nut body 8 is prevented from falling off the bolt, and the anti-loose function of the bolt is realized.

[0032] Specifically as Figure 1 And Figure 2As shown in the figure, after the bolt is installed, the center of the protective cover 12 is aligned with the center of the bolt head 1, so that the "cross" block 14 arranged on the right side of the protective cover 12 is aligned with the "cross" groove arranged on the left side of the bolt head 1, and the positioning strips 15 arranged at equal angles on the inner side of the protective cover 12 are aligned with the positioning grooves 17 arranged at equal angles on the outer side of the bolt head 1. The protective cover 12 is pushed so that the positioning strips 15 and the positioning grooves 17 are clamped and connected to strengthen the stability of the connection between the protective cover 12 and the bolt head 1. After the "cross" block 14 of the protective cover 12 is clamped with the bolt head 1, the pushing of the protective cover 12 is stopped, so that the positioning and connection between the bolt and the anti-theft structure are strengthened.

[0033] Specifically, as shown in Figure 1 、 Figure 4 and Figure 5 When the positioning strips 15 are aligned with the anti-theft cap 16 on the outer side of the bolt head 1, the limiting plate 11 is pressed, so that the limiting plate 11 in the disc structure generates a pushing force on the inner side of the trapezoidal structure connecting seat 10. The connecting seat 10 is arranged symmetrically about the center line of the bolt head 1. The left and right sides of the connecting seat 10 are provided with connecting blocks 903. The connecting blocks 903 contained in the anti-theft assembly 9 are penetrated by the limiting rods 901. The inner side of the connecting block 903 has a spring body 902 also penetrated by the limiting rod 901. The connecting seat 10 generates a pushing force on the spring body 902 through the connecting block 903, so that the spring body 902 is compressed. When the outer side of the connecting seat 10 is flush with the outer side of the bolt head 1, the protective cover 12 is pushed until the limiting groove 13 opened in the protective cover 12 is aligned with the center of the limiting plate 11. The spring body 902 returns to the initial state. In this process, the spring body 902 and the bolt head 1 are in sliding connection until the limiting plate 11 and the limiting groove 13 opened in the protective cover 12 are clamped. The protective cover 12 is limited on the outer side of the bolt head 1. The end of the protective cover 12 away from the bolt head 1 is connected with the anti-theft cap 16 in the semicircular ball structure. The bolt is prevented from being unscrewed and stolen when no one is present. The anti-theft function of the bolt is realized. This is the use method of the anti-loose bolt.

[0034] The standard parts used in the utility model can be purchased from the market. The special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. The circuit connection adopts the conventional connection mode in the existing technology. The details are not described here. The contents not described in detail in the description belong to the existing technology known to the professional technicians in the field.

[0035] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and 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 loosening-preventing bolt, comprising a bolt head (1), a first main rod (2) arranged at the right side of the bolt head (1), a first thread group (3) formed in the inside of the first main rod (2), a connecting rod (4) mounted at the right end of the first main rod (2), a second main rod (5) arranged at the right side of the connecting rod (4), and a second thread group (6) formed in the inside of the second main rod (5); characterized in that Further comprising: a connecting piece (7) arranged at the right side of the first main rod (2), and a nut body (8) arranged at the outside of the first main rod (2); a theft-preventing assembly (9) formed in the inside of the bolt head (1), a connecting seat (10) arranged at the outside of the theft-preventing assembly (9), and a theft-preventing structure arranged at the outside of the connecting seat (10).

2. A self-locking bolt according to claim 1, wherein: The first thread group (3) is arranged at equal intervals on the first main rod (2), and the direction of the first thread group (3) is opposite to the direction of the second thread group (6).

3. The anti-loosening bolt according to claim 1, wherein: The diameter of the connecting rod (4) is smaller than the diameter of the connecting piece (7), the connecting rod (4) is connected to the connecting piece (7) in a clamping manner, and the connecting piece (7) has a circular ring structure.

4. The anti-loosening bolt of claim 1, wherein: The theft-preventing assembly (9) comprises a limiting rod (901), a spring body (902), and a connecting block (903), the spring body (902) is arranged at the outside of the limiting rod (901), and the connecting block (903) is mounted at the front side of the spring body (902).

5. A self-locking bolt according to claim 4, wherein: The connecting block (903) is connected to the bolt head (1) in a sliding manner, and the connecting block (903) is arranged symmetrically about the connecting seat (10) on the inside.

6. A self-locking bolt according to claim 5, wherein: The connecting seat (10) is arranged symmetrically about the center line of the bolt head (1) in an up-down manner, and the connecting seat (10) has a trapezoidal structure.

7. The anti-loosening bolt of claim 1, wherein: The bolt head (1) is connected to a protective cover (12) in a clamping manner, the protective cover (12) is arranged at the inside of the bolt head (1), the protective cover (12) is arranged at the inside of the bolt head (1), the protective cover (12) is arranged at the inside of the bolt head (1), and the protective cover (12) is arranged at the inside of the bolt head (1).

8. A self-locking bolt according to claim 7, wherein: The protective cover (12) is arranged at the left side of the bolt head (1), and the protective cover (12) has a semicircular ball structure.

9. The anti-loosening bolt of claim 1, wherein: The theft-preventing structure comprises a limiting plate (11) arranged at the outside of the connecting seat (10), and the limiting plate (11) is connected to the protective cover (12) in a clamping manner.

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