Bolt fastener anti-loose locking structure and bolt fastener thereof

Abstract

The invention relates to the technical field of bolt fasteners, in particular to a bolt fastener anti-loose locking structure and a bolt fastener thereof.The bolt fastener anti-loose locking structure comprises a clamping groove formed in a bolt body, the clamping groove is communicated with the outside of the bolt body, an inserting piece is movably installed in the clamping groove, a sliding groove is formed in the side wall face of the clamping groove, and the inserting piece is movably installed in the sliding groove. The sliding groove communicates with the outside of the bolt body, a clamping block is slidably installed in the sliding groove, and a threaded part is arranged on the side, close to the outside of the bolt body, of the clamping block. The clamping block is provided with a first inclined face, the side wall face of the inserting piece is provided with a second inclined face, and the first inclined face is used for being matched with the second inclined face in an abutting mode. A locking structure is arranged in the bolt body, and a glue filling structure is arranged in the locking structure. The invention aims to improve the anti-loosening performance of the bolt fastener and improve the utilization rate of the thread glue when the thread glue is applied to the bolt fastener.

Description

Technical Field

[0001] The invention relates to the technical field of bolt fasteners, and in particular to a bolt fastener anti-loosening locking structure and a bolt fastener thereof. Background Art

[0002] Bolts are a type of fastener commonly used in the industrial field and need to be used in conjunction with nuts to fasten two parts with through holes.

[0003] When bolts are used for connection, the connection between the bolt and its matching nut may become loose due to mechanical vibration, thereby reducing the fastening effect of the bolt connection. The conventional solution to this problem in the prior art is usually to apply thread glue to the connection between the bolt and the nut, or to use a double nut fastening structure.

[0004] Among them, the double-nut type anti-loosening structure can be found in patent number: CN114294315B, and the patent name is: A double-nut constrained anti-loosening bolt structure. Its anti-loosening and tightening effect is improved, but the double-nut anti-loosening structure will force the axial size of the bolt tightening structure to increase, which is difficult to use in work scenarios with limited space.

[0005] At this time, thread glue can be used for fastening. For the thread glue fastening method, the commonly used glue application method is to first apply thread glue on the thread of the nut, and then screw the thread together. However, this will cause the part of the bolt where the nut passes to be attached with a portion of thread glue during the process of screwing the nut into the bolt, and eventually the thread glue carried by the nut will be lost when it reaches the designated fastening position, resulting in a waste of thread glue. Moreover, as the distance the nut is screwed into the bolt increases, the thread glue lost will be more.

[0006] To this end, a bolt fastener anti-loosening locking structure and a bolt fastener thereof are proposed. Summary of the invention

[0007] The object of the present invention is to provide a bolt fastener anti-loosening locking structure and a bolt fastener thereof, so as to improve the anti-loosening performance of the bolt fastener and improve the thread glue utilization rate when the thread glue is applied to the bolt fastener.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A loosening prevention and locking structure for a bolt fastener, including a card slot opened on the bolt body, the card slot communicating with the outside of the bolt body, a inserting piece movably installed in the card slot, a sliding groove opened on the side wall surface of the card slot, the sliding groove communicating with the outside of the bolt body, a clamping block slidably installed in the sliding groove, and a threaded portion provided on the side of the clamping block close to the outside of the bolt body; a first inclined surface is opened on the clamping block, and a second inclined surface is opened on the side wall surface of the inserting piece, and the first inclined surface is used for abutting and cooperating with the second inclined surface; a locking structure is arranged in the bolt body, and a glue filling structure is arranged in the locking structure.

[0010] Based on this solution, when the nut is not screwed onto the bolt, first pull out the inserting piece from the card slot, then insert the bolt into the hole specially opened for connection, and then screw the nut onto the bolt. During this process, since the clamping block does not abut against the inserting piece, when the threaded portion on the clamping block is subjected to the extrusion force exerted by the threads in the nut, it will not generate additional friction on the nut, but cause the clamping block to yield into the sliding groove. So the clamping block will not cause additional obstruction to the process of screwing the nut onto the bolt.

[0011] After screwing the nut onto the bolt for a certain distance to make the bolt fastener reach the designed pre-tightening force, insert the inserting piece into the card slot. At this time, the second inclined surface portion on the inserting piece presses against the first inclined surface portion on the clamping block, so that the clamping block is pushed out of the sliding groove by the mutual extrusion of the two inclined surfaces. Thus, the threaded portion on the clamping block is in close fit with the threads of the nut, and the tightness of this fit gradually increases with the depth of insertion of the inserting piece. Until the inserting piece is inserted to the deepest position in the card slot, the fit between the threaded portion and the nut reaches the tightest state. Subsequently, lock the relative positions of the clamping block and the inserting piece through the locking structure, so that the clamping block and the inserting piece remain in an abutting state, and further keep the fit between the threaded portion and the nut in the tightest state.

[0012] At this time, due to the mutual extrusion between the inserting piece and the clamping block, the extrusion force at the abutting part between the threaded portion and the threads of the nut is higher than the extrusion force at the mating part between the nut and the bolt, thereby increasing the friction between the nut and the threaded portion, increasing the difficulty of rotating the nut, and also increasing the difficulty of unscrewing the nut from the bolt, so as to improve the anti-loosening performance of the bolt fastener and reduce the risk of the nut loosening from the bolt due to vibration or other reasons.

[0013] In the case of applying thread glue, before the above work process, thread glue can be filled into the glue filling structure first. This part of the thread glue will be activated during the working process of the locking structure and accurately inject the internally filled thread glue into the thread engagement surface between the bolt and the nut, thereby improving the utilization rate of the thread glue.

[0014] Preferably, the locking structure includes a first installation groove formed in the bolt body. The two ends of the first installation groove are respectively communicated with the outside of the bolt body and the card slot. A second installation groove is formed in the insert piece, and the second installation groove is a through groove. A card belt is movably installed in the first installation groove and the second installation groove together. A first serrated portion is arranged on one side wall surface of the card belt. A limiting block is fixedly installed at one end of the card belt. A locking block is arranged at the end of the card belt that is not connected to the limiting block. A matching groove for passing through the card belt is formed in the locking block. A second serrated portion for restricting the movement of the first serrated portion is arranged on one side wall surface of the matching groove.

[0015] With this arrangement, before inserting the insert piece into the card slot, first insert the card belt into the first installation groove from the outside of the bolt until the limiting block on the card belt abuts against the bolt. At this time, the card belt extends out of the other end of the first installation groove and extends outside the card slot. Subsequently, when inserting the insert piece into the card slot, first insert the card belt into the second installation groove, and then insert the insert piece into the card slot. When the insert piece is inserted to the deepest part of the card slot, the card belt extends out of the other end of the second installation groove. At this time, then sleeved the locking block onto the card belt and push the locking block to the position where it abuts against the bolt. By using the cooperation between the second serrated portion of the locking block and the first serrated portion of the card belt, the locking block can only move unidirectionally on the card belt. Therefore, the locking block locks the position of the insert piece at this time, thus ensuring that the insert piece remains in a stable and reliable working position during the working process of the fastener of the present invention, and improving the reliability of the present invention.

[0016] Specifically, the cooperation relationship between the locking block and the card belt is as follows: When the locking block moves on the card belt towards the bolt, the second serrated portion and the first serrated portion abut against each other through the inclined plane portion of the serrated shape. Therefore, by using the cooperation with the serrated inclined plane of the first serrated portion, a certain dislocation can occur between the first serrated portion and the second serrated portion, and then by means of the material elasticity, the second serrated portion can cross the first serrated portion in this movement direction; when the locking block moves on the card belt away from the bolt, the second serrated portion and the first serrated portion abut against each other through the flat portion of the serrated shape, so that the second serrated portion and the first serrated portion cannot be dislocated. Because of this, at this time, the tooth top of the serrated shape of the second serrated portion abuts against the tooth root of the first serrated portion, so it is difficult to make the first serrated portion undergo sufficient elastic deformation to cross the second serrated portion, so the locking block cannot move away from the bolt.

[0017] Preferably, the glue filling structure includes a receiving groove formed in the block. One end of the receiving groove communicates with the outside of the block from the first inclined surface, and the other end of the receiving groove communicates with the outside of the block. A push rod is fixedly installed on the second inclined surface, and the push rod is aligned with one end of the receiving groove on the first inclined surface.

[0018] With this setting, thread sealant can be first loaded into the receiving groove of the clamping block, and then the installation operation can be carried out. At this time, when the insert is inserted into the card slot, before the second inclined surface cooperates with the first inclined surface, since the push rod is aligned with one end of the receiving groove on the first inclined surface, the push rod will first align with and insert into the opening of the receiving groove. After that, when the insert continues to be inserted deeper into the card slot, the push rod will first bend, and the axis of the bent push rod is parallel to the axis of the receiving groove. Then this part of the push rod will move along the receiving groove with the insertion movement of the insert, so as to be able to push out the thread sealant loaded in the receiving groove. Moreover, the thread sealant extruded from the receiving groove can directly enter the thread engagement surface between the bolt and the nut, thereby improving the utilization rate of the thread sealant and preventing waste of the thread sealant.

[0019] It is worth mentioning that the viscosity of the thread sealant is relatively large and it is not easy to fill it into a narrow space. Simply increasing the cross-sectional area of the receiving groove to solve this problem will have a negative impact on the mechanical properties of the clamping block. To solve this problem, on the basis of the above solution, the receiving groove can be opened on the side wall surface of the clamping block, and the side surface of the receiving groove is communicated with the external space of the clamping block. Thus, when filling the thread sealant onto the clamping block, it can be filled from the side, so that the thread sealant can easily fill the space of the receiving groove, and there is no need to increase the size of the receiving groove, which is beneficial to improving the operation convenience of the present invention and extending the service life.

[0020] On this basis, a flat chamfer can be provided at the end of the push rod aligned with the receiving groove, and the flat chamfer is provided on the side wall surface of the push rod close to the second inclined surface. Thus, when the push rod is exactly aligned with the opening of the receiving groove on the first inclined surface, the flat chamfer can serve as a guide for the bending deformation of the push rod. The flat chamfer reduces the area of the end face of the push rod, so that after the push rod is aligned with the receiving groove and abuts against the side surface of the receiving groove, the abutting area is reduced, and thus it is easier to bend under the action of subsequent extrusion force.

[0021] Preferably, a protruding portion is provided on the insert, and a groove is provided on the side wall surface of the card slot for receiving the protruding portion.

[0022] With this setting, the cooperation of the protruding portion and the groove can be utilized to ensure that the insert always maintains the same axial position and does not shift during the process of inserting into the card slot. Thus, it is beneficial to ensure that the push rod on the insert can accurately align with the receiving groove in the card slot that is not easy to observe visually, and further enables the operation of the present invention to be completed accurately and quickly, which helps to improve the construction efficiency.

[0023] Preferably, a cotton sleeve is provided at the end of the push rod aligned with the receiving groove. The shape of the cotton sleeve is spherical, and the cross-sectional area of the cotton sleeve is larger than the cross-sectional area of the receiving groove.

[0024] With this setting, during the process of the push rod moving along the receiving groove to push out the thread glue filled in the receiving groove, since the cross-sectional area of the cotton sleeve is larger than that of the receiving groove, the cotton sleeve will deform, thereby forming a piston head on the end of the push rod with the same cross-sectional area and shape as the receiving groove. This ensures that the thread glue in the receiving groove can be completely pushed out of the receiving groove, improving the reliability of the present invention. At the same time, because the cotton sleeve is provided, after the thread glue in the receiving groove is completely pushed out, it is the cotton sleeve rather than the push rod that contacts the thread of the nut. Due to the soft characteristic of the material of the cotton sleeve itself, the designer does not need to worry about the cotton sleeve damaging the thread of the nut. Therefore, the tolerance value can be selected more loosely during design, reducing the design difficulty.

[0025] Preferably, as a bolt fastener applying the above-mentioned anti-loosening locking structure of the bolt fastener, it includes a cap portion and a screw rod. Among them, the screw rod is fixedly connected to the cap portion, the card slot is opened at one end of the screw rod away from the cap portion, and the thread portion meshes with the screw rod.

[0026] Based on this setting, after the bolt fastener and the nut are connected and installed, the extrusion force between the card block and the nut in the anti-loosening locking structure of the bolt fastener can be increased, thereby improving the tightness of the connection between the nut and the bolt fastener, making it more difficult for the two to separate, and thus improving the anti-loosening performance. At the same time, after the bolt and the nut are connected, the thread glue filled in the glue filling structure can be accurately injected into the thread engagement surface of the bolt and the nut, thereby improving the utilization rate of the thread glue.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. By setting the anti-loosening locking structure and the locking structure of the bolt fastener, through the mutual extrusion between the inclined surface 1 on the card block and the inclined surface 2 on the insert piece, the card block is pushed out of the sliding groove, so that the extrusion force at the contacting part between the thread portion and the thread of the nut is higher than the extrusion force at the mating part between the nut and the bolt, thereby increasing the friction between the nut and the thread portion and increasing the difficulty of screwing the nut out of the bolt, thus improving the anti-loosening performance of the bolt fastener and reducing the risk of the nut loosening from the bolt due to vibration or other reasons. Finally, the position of the insert piece is locked through the locking structure, so that the anti-loosening performance can be maintained.

[0029] 2. By setting the glue filling structure, when the insert is inserted into the card slot, before the second inclined surface cooperates with the first inclined surface, the push rod will first align with and insert into the opening of the receiving groove. After that, when the insert continues to be inserted deeper into the card slot, the push rod will bend, and the axis of the bent push rod will be parallel to the axis of the receiving groove. Thus, this part of the push rod will move along the receiving groove with the insertion movement of the insert, so as to be able to push out the thread glue loaded in the receiving groove. Moreover, the thread glue extruded from the receiving groove can directly enter the thread engagement surface of the bolt and the nut, thereby improving the utilization rate of the thread glue and preventing waste of the thread glue.

[0030] 3. By setting the cotton sleeve, during the process that the push rod moves along the receiving groove to push out the thread glue loaded in the receiving groove, since the cross-sectional area of the cotton sleeve is larger than that of the receiving groove, the cotton sleeve will deform, so as to form a piston head on the end of the push rod with the same cross-sectional area and shape as that of the receiving groove, thereby ensuring that the thread glue in the receiving groove can be completely pushed out of the receiving groove and improving the reliability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 is a front view structural schematic diagram of the present invention;

[0033] Figure 3 is Figure 1 a partial enlarged schematic diagram of part A in

[0034] Figure 4 is Figure 2 a partial enlarged schematic diagram of part B in

[0035] Figure 5 is Figure 2 a sectional schematic diagram of the S-S section in

[0036] Figure 6 is Figure 5 a partial enlarged schematic diagram of part C in

[0037] Figure 7 is Figure 5 a partial enlarged schematic diagram of part D in

[0038] Figure 8 is Figure 5 a partial enlarged schematic diagram of part E in

[0039] Figure 9 is Figure 7 a state schematic diagram when the push rod just aligns with the opening of the receiving groove.

[0040] In the figure: 1. Bolt body; 2. Insert piece; 3. Clamping block; 4. Locking block; 11. Cap portion; 12. Screw rod; 13. Card slot; 14. Slide groove; 21. Protruding portion; 22. Groove; 23. Second inclined surface; 24. First inclined surface; 25. Accommodating groove; 26. Push rod; 27. Cotton sleeve; 28. Flat chamfer; 31. Threaded portion; 41. Card belt; 42. First serrated portion; 43. Limit block; 44. First installation groove; 45. Fitting groove; 46. Second serrated portion; 47. Second installation groove. Specific embodiments

[0041] The following content will clearly explain the specific embodiments of the present invention with the help of the attached drawings listed in the foregoing "Brief Description of the Drawings", so as to enable readers to more completely and objectively understand the working principle and corresponding technical effects of the present invention.

[0042] As Figures 1 to 9 shown, a specific embodiment of the present invention is shown. Among them, several points need to be explained in advance: First, the anti-loosening and locking structure of the bolt fastener of the present invention needs to be used in cooperation with the bolt fastener. The bolt fastener selected in this embodiment includes a cap portion 11 and a screw rod 12. The screw rod 12 is fixedly connected to the cap portion 11 to form a bolt body 1. Among them, a card slot 13 is opened at one end of the screw rod 12 away from the cap portion 11, and its threaded portion 31 meshes with the screw rod 12; Second, in this embodiment, plastic is used as the material of the push rod 26 to simultaneously obtain good elasticity and structural strength, which helps the push rod 26 to smoothly push the thread glue out of the accommodating groove 25. However, the plastic push rod 26 has a limited service life and is not suitable for use in the connection of components that need to be disassembled and assembled frequently. If it needs to be applied in a working condition that requires frequent disassembly and assembly, under the condition of using a material with good elasticity, the fixed connection between the push rod 26 and the insert piece 2 can be changed to a rotating connection, thereby avoiding fatigue breakage of the push rod 26 at the connection part with the insert piece 2.

[0043] When manufacturing the present invention, first, a card slot 13 is opened on the screw rod 12. The card slot 13 communicates with the outside of the screw rod 12. An insert piece 2 is movably installed in the card slot 13. A slide groove 14 is opened on the side wall surface of the card slot 13. The slide groove 14 communicates with the outside of the screw rod 12. A clamping block 3 is slidably installed in the slide groove 14. A threaded portion 31 is provided on the side of the clamping block 3 close to the outside of the screw rod 12; An inclined surface one 24 is opened on the clamping block 3, and an inclined surface two 23 is opened on the side wall surface of the insert piece 2. The inclined surface one 24 is used for abutting and cooperating with the inclined surface two 23; A locking structure is jointly arranged in the screw rod 12 and the cap portion 11, and a glue filling structure is arranged in the locking structure.

[0044] Among them, the locking structure includes a first installation groove 44 opened at the top end of the cap portion 11, and the first installation groove 44 continues to be opened downward until it communicates with the card slot 13. A second installation groove 47 is opened in the insert piece 2, and the second installation groove 47 is a through groove; a card belt 41 is movably installed in the first installation groove 44 and the second installation groove 47 together. A first serrated portion 42 is provided on one side wall surface of the card belt 41. A limiting block 43 is fixedly installed at one end of the card belt 41. A locking block 4 is provided at one end of the card belt 41 that is not connected to the limiting block 43. A fitting groove 45 for passing through the card belt 41 is opened in the locking block 4. A second serrated portion 46 for restricting the movement of the first serrated portion 42 is provided on one side wall surface of the fitting groove 45.

[0045] The glue filling structure includes a receiving groove 25 opened in the block 3. One end of the receiving groove 25 communicates with the outside of the block 3 from the first inclined surface 24, and the other end of the receiving groove 25 communicates with the outside of the block 3; a push rod 26 is fixedly installed on the second inclined surface 23, and the push rod 26 is aligned with one end of the receiving groove 25 on the first inclined surface 24.

[0046] In addition, the receiving groove 25 is opened on the side wall surface of the block 3, and the side surface of the receiving groove 25 communicates with the external space of the block 3. A cotton sleeve 27 is provided at one end of the push rod 26 aligned with the receiving groove 25. The shape of the cotton sleeve 27 is spherical, and the cross-sectional area of the cotton sleeve 27 is larger than the cross-sectional area of the receiving groove 25. A flat chamfer 28 is provided at one end of the push rod 26 aligned with the receiving groove 25. The flat chamfer 28 is provided on the side wall surface of the push rod 26 close to the second inclined surface 23. A protruding portion 21 is provided on the insert piece 2, and a groove 22 is opened on the side wall surface of the card slot 13 for accommodating the protruding portion 21.

[0047] When the present invention works, when the nut is not screwed onto the bolt body 1, first take out the insert piece 2 and the block 3, and fill the receiving groove 25 in the block 3 with thread glue. Then, install the block 3 back into the sliding groove 14. At this time, due to the viscosity of the thread glue, the block 3 will not fall out of the sliding groove 14, and it takes a few minutes for the thread glue to initially solidify. Therefore, it is sufficient to perform subsequent operations before the thread glue undergoes a gluing effect.

[0048] Subsequently, insert the bolt into the hole specifically opened for connection, and then screw the nut onto the bolt. During this process, since the block 3 does not abut against the insert piece 2, when the threaded portion 31 on the block 3 is subjected to the extrusion force exerted by the threads in the nut, it will not generate additional friction on the nut, but cause the block 3 to yield into the sliding groove 14. Thus, the block 3 will not cause additional obstruction to the process of screwing the nut onto the bolt.

[0049] After screwing the nut onto the bolt for a certain distance to make the bolt fastener reach the designed pre-tightening force, first insert the tape 41 into the first installation groove 44 from the outside of the bolt until the limit block 43 on the tape 41 abuts against the bolt. At this time, the tape 41 extends out from the other end of the first installation groove 44 and extends outside the card slot 13. Subsequently, when inserting the insert piece 2 into the card slot 13, first insert the tape 41 into the second installation groove 47, and then insert the insert piece 2 into the card slot 13.

[0050] During the process of inserting the insert piece 2 into the card slot 13, the second inclined surface part on the insert piece 2 presses against the first inclined surface part on the clamping block 3, so that the clamping block 3 is pushed out of the sliding groove 14 through the mutual extrusion of the two inclined surfaces. As a result, the threaded part 31 on the clamping block 3 is in close fit with the thread of the nut, and the tightness of this fit gradually increases with the insertion depth of the insert piece 2. Until the insert piece 2 is inserted to the deepest position in the card slot 13, the fit between the threaded part 31 and the nut reaches the tightest state. Subsequently, the relative positions of the clamping block 3 and the insert piece 2 are locked through the locking structure, so that the clamping block 3 and the insert piece 2 are kept in contact with each other, and further the fit between the threaded part 31 and the nut is kept in the tightest state.

[0051] What also occurs synchronously during this process is that when the insert piece 2 is inserted into the card slot 13, before the second inclined surface 23 and the first inclined surface 24 are in cooperation, since the push rod 26 is aligned with one end of the receiving groove 25 on the first inclined surface 24, the push rod 26 will first be aligned with and inserted into the opening of the receiving groove 25. After that, when the insert piece 2 continues to be inserted deeper into the card slot 13, the push rod 26 will first bend, and the axis of the bent push rod 26 is parallel to the axis of the receiving groove 25. So this part of the push rod 26 will move along the receiving groove 25 with the insertion movement of the insert piece 2, so as to be able to push out the thread glue loaded in the receiving groove 25. And the thread glue extruded from the receiving groove 25 can directly enter the thread engagement surface between the bolt and the nut, thus improving the utilization rate of the thread glue and preventing waste of the thread glue.

[0052] After all the above operations are completed, due to the mutual extrusion between the insert piece 2 and the clamping block 3, the extrusion force at the abutting part between the threaded part 31 and the thread of the nut is higher than the extrusion force at the mating part between the nut and the bolt. This increases the frictional force between the nut and the threaded part 31, making it more difficult to rotate the nut, and also increasing the difficulty of unscrewing the nut from the bolt. Thereby improving the anti-loosening performance of the bolt fastener and reducing the risk of the nut loosening from the bolt due to vibration or other reasons.

[0053] After the insert piece 2 is inserted to the deepest part of the card slot 13, the tape 41 extends from the other end of the second installation groove 47. At this time, the locking block 4 is sleeved on the tape 41, and the locking block 4 is pushed to a position where it abuts against the bolt. By the cooperation of the second serrated portion 46 of the locking block 4 and the first serrated portion 42 of the tape 41, the locking block 4 can only move unidirectionally on the tape 41. Thus, the position of the insert piece 2 is locked at this time, and the abutting relationship between the first inclined surface 24 and the second inclined surface 23 is also locked, so as to ensure that the insert piece 2 remains in a stable and reliable working position during the working process of the fastener of the present invention, and improve the reliability of the present invention.

[0054] It should be emphasized that based on the content recorded in the above text, although the beneficial effects of the present invention have been elaborated in detail and corresponding specific implementation manners have been provided, however, those of ordinary skill in the art can still, on the premise of fully understanding the working principle of the present invention, make conventional substitutions, deformations and other changes that do not require creative labor based on the given technical solutions to achieve the same technical effects. However, this should not be considered as exceeding the scope of the present invention. Specifically, the scope of the invention of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bolt fastener anti-loosening locking structure, characterized in that: The invention comprises a slot (13) provided on a bolt body (1), the slot (13) being connected to the outside of the bolt body (1), an inserting piece (2) being movably installed in the slot (13), a sliding groove (14) being provided on the side wall surface of the slot (13), the sliding groove (14) being connected to the outside of the bolt body (1), a block (3) being slidably installed in the sliding groove (14), a threaded portion (31) being provided on a side of the block (3) close to the outside of the bolt body (1); a first inclined surface (24) being provided on the block (3), a second inclined surface (23) being provided on the side wall surface of the inserting piece (2), the first inclined surface (24) being used to abut against the second inclined surface (23); a locking structure being provided in the bolt body (1), and a glue filling structure being provided in the locking structure.

2. A bolt fastener anti-loosening locking structure according to claim 1, characterized in that: The locking structure comprises a mounting groove (44) provided in the bolt body (1), the two ends of the mounting groove (44) being respectively connected to the outside of the bolt body (1) and the clamping groove (13); a mounting groove (47) is provided in the inserting piece (2), and the mounting groove (47) is a through groove; a clamping belt (41) is movably installed in the mounting groove (44) and the mounting groove (47); a serrated portion (42) is provided on one side wall of the clamping belt (41); a limiting block (43) is fixedly installed on one end of the clamping belt (41); a locking block (4) is provided on the end of the clamping belt (41) not connected to the limiting block (43); a matching groove (45) for passing the clamping belt (41) is provided in the locking block (4); a serrated portion (46) for limiting the movement of the serrated portion (42) is provided on one side wall of the matching groove (45).

3. The anti-loosening locking structure of a bolt fastener according to claim 2, characterized in that: The glue filling structure comprises a receiving groove (25) provided on the card block (3), one end of the receiving groove (25) being connected to the outside of the card block (3) from the inclined surface 1 (24), and the other end of the receiving groove (25) being connected to the outside of the card block (3); a push rod (26) being fixedly mounted on the inclined surface 2 (23), and the push rod (26) being aligned with one end of the receiving groove (25) on the inclined surface 1 (24).

4. The anti-loosening locking structure of a bolt fastener according to claim 3, characterized in that: The receiving groove (25) is provided on the side wall surface of the card block (3), and the side surface of the receiving groove (25) is communicated with the external space of the card block (3).

5. The anti-loosening locking structure of a bolt fastener according to claim 3, characterized in that: A cotton sleeve (27) is arranged on one end of the push rod (26) aligned with the receiving groove (25). The cotton sleeve (27) is spherical in shape, and the cross-sectional area of ​​the cotton sleeve (27) is larger than the cross-sectional area of ​​the receiving groove (25).

6. The anti-loosening locking structure of a bolt fastener according to claim 3, characterized in that: A flat chamfer (28) is provided on one end of the push rod (26) aligned with the receiving groove (25), and the flat chamfer (28) is provided on a side wall of the push rod (26) close to the second inclined surface (23).

7. The anti-loosening locking structure of a bolt fastener according to claim 3, characterized in that: The inserting piece (2) is provided with a protruding portion (21), and a groove (22) is provided on the side wall surface of the clamping slot (13), and the groove (22) is used to accommodate the protruding portion (21).

8. A bolt fastener, comprising a cap (11) and a screw (12), wherein the screw (12) is fixedly connected to the cap (11), characterized in that: The bolt fastener is provided with any one of the bolt fastener anti-loosening locking structures of claims 1 to 7, the slot (13) is provided on one end of the screw rod (12) away from the cap portion (11), and the threaded portion (31) is meshed with the screw rod (12).

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