Anti-loosening bolt for adjusting tooth difference

Abstract

The present invention relates to the technical field of bolts, and in particular to an anti-loosening bolt with tooth difference adjustment, comprising a bolt and an anti-rotation structure at least arranged at one end of the bolt; the anti-rotation structure comprises a base, an adjuster, a sliding sleeve, a retaining ring and a head which are sequentially sleeved on the bolt; a plurality of first adjustment structures are arranged on the base, a plurality of second adjustment structures are arranged on the adjuster, and the first adjustment structures and the second adjustment structures are meshed one by one; a plurality of third adjustment structures are arranged on the adjuster, a plurality of fourth adjustment structures are arranged on the sliding sleeve, and the third adjustment structures and the fourth adjustment structures are meshed one by one; the number of the first adjustment structure and the fourth adjustment structure is different, and the first adjustment structure and the second adjustment structure, and the third adjustment structure and the fourth adjustment structure are fully meshed and connected. The present invention provides an anti-loosening bolt with tooth difference adjustment, which can lock the bolt in real time through the adjustment of the adjustment structure, and will not loosen in the environment of long-term use.

Description

Technical Field

[0001] The invention relates to the technical field of bolts, and in particular to an anti-loosening bolt with tooth difference adjustment. Background Art

[0002] Anti-loosening bolts are mainly used to control the loosening and failure of running connecting parts under vibration conditions, especially in mechanical equipment under vibration working conditions. Measures need to be taken to prevent parts from loosening and affecting the normal operation of mechanical connecting parts.

[0003] The anti-loosening bolt in the prior art includes: an anti-loosening bolt and an anti-loosening washer, and a main anti-loosening nut, an anti-loosening tooth is provided between the main anti-loosening nut and the anti-loosening washer, the tooth end angle of the anti-loosening tooth is θ1, and the thread inclination angle on the anti-loosening bolt is θ2. Since the tooth end angle θ1 is greater than the thread inclination angle θ2, the purpose of anti-loosening is achieved.

[0004] However, in the prior art, the anti-loosening bolt is used in an environment of long-term vibration. Since the height difference between the tooth end angle θ1 and the thread inclination angle θ2 decreases as the distance decreases, the bolt cannot be locked in real time, so it will still loosen slowly, causing the connection to separate. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to solve the defect in the prior art that the anti-loosening nut will still loosen after long-term use and cannot lock the bolt in real time, thereby providing an anti-loosening bolt with tooth difference adjustment that can lock the bolt in real time through adjustment of the adjustment structure and will not loosen under long-term use.

[0006] In order to solve the above technical problems, the present invention provides a bolt and an anti-rotation structure at least arranged at one end of the bolt; the anti-rotation structure comprises a base, an adjuster, a sliding sleeve, a retaining ring and a head which are sequentially sleeved on the bolt;

[0007] The base is connected to the fastener, the head is connected to the bolt and inserted into the base, suitable for pressing the base; the retaining spring connects the head and the sliding sleeve, limiting the sliding sleeve from slipping relative to the head;

[0008] The base is provided with a plurality of first adjustment structures, the adjuster is provided with a plurality of second adjustment structures, and the first adjustment structures and the second adjustment structures are meshed one by one; the adjuster is provided with a plurality of third adjustment structures, the sliding sleeve is provided with a plurality of fourth adjustment structures, and the third adjustment structures and the fourth adjustment structures are meshed one by one;

[0009] The number of the first adjustment structure and the second adjustment structure is different from that of the third adjustment structure and the fourth adjustment structure. The first adjustment structure and the second adjustment structure, and the third adjustment structure and the fourth adjustment structure are fully meshed and connected.

[0010] Furthermore, the number of the first adjustment structures and the second adjustment structures is 25, and the number of the third adjustment structures and the fourth adjustment structures is 26.

[0011] Furthermore, the first adjustment structure, the second adjustment structure, the third adjustment structure, and the fourth adjustment structure are all right-angled wedge-shaped teeth.

[0012] Furthermore, a fixing portion is provided on a side of the base facing away from the regulator.

[0013] Furthermore, the cross-section of the fixing portion is a rounded rectangle.

[0014] Furthermore, a fifth adjustment structure is included, and the fifth adjustment structure includes: at least two protrusions arranged at intervals along the circumference of the head;

[0015] At least two recessed portions are arranged at intervals along the inner wall of the sliding sleeve and are suitable for the protrusion to be inserted into so as to limit the rotation of the head relative to the sliding sleeve.

[0016] Furthermore, the number of the protruding portions and the number of the recessed portions are both six.

[0017] Furthermore, an opening is provided along the circumference of the head, and the opening provides a receiving space for the retaining spring.

[0018] Furthermore, a positioning structure is included, and the positioning structure includes: a positioning groove, which is provided on one of the sliding sleeve or the retaining spring;

[0019] A positioning protrusion is arranged on the other of the sliding sleeve or the retaining spring, and is suitable for the positioning protrusion to be inserted into the positioning groove to limit the rotation of the sliding sleeve relative to the retaining spring.

[0020] Furthermore, the retaining spring is an elastic member.

[0021] The technical solution of the present invention has the following advantages:

[0022] 1. The anti-loosening bolt for tooth difference adjustment provided by the present invention comprises: a bolt and an anti-rotation structure at least provided at one end of the bolt; the anti-rotation structure comprises a base, an adjuster, a sliding sleeve, a retaining spring and a head which are sequentially sleeved on the bolt; the base is connected to the fastener, the head is connected to the bolt and inserted into the base, and is suitable for pressing the base; the retaining spring connects the head and the sliding sleeve to limit the sliding of the sliding sleeve relative to the head; a plurality of first adjustment structures are provided on the base, a plurality of second adjustment structures are provided on the adjuster, and the first adjustment structure and the second adjustment structure are meshed in a one-to-one correspondence; a plurality of third adjustment structures are provided on the adjuster, and a plurality of fourth adjustment structures are provided on the sliding sleeve, and the third adjustment structure and the fourth adjustment structure are meshed in a one-to-one correspondence; the number of the first adjustment structure and the second adjustment structure is different from that of the third adjustment structure and the fourth adjustment structure, and the first adjustment structure and the second adjustment structure, and the third adjustment structure and the fourth adjustment structure are fully meshed and connected.

[0023] Since the number of the first adjustment structure and the second adjustment structure is different from that of the third adjustment structure and the fourth adjustment structure, when the adjuster rotates in the axial direction of the bolt, the rotation angle of the second adjustment structure is greater than the rotation angle of the fourth adjustment structure, so that the position of the sleeve is offset, and the angle difference between the second adjustment structure and the fourth adjustment structure can be used to make precise adjustments, so that the adjuster and the sleeve are accurately installed on the base, and during the installation process, the position deviation between the base and the head is adjusted. At the same time, since the number of the first adjustment structure and the second adjustment structure is different from that of the third adjustment structure and the fourth adjustment structure, the locking position of the sleeve on the head within one week can be increased, so that the head can stay at each locking position, thereby achieving the purpose of real-time locking. In addition, a retaining spring is provided on the head to limit the slippage of the sleeve relative to the head, thereby increasing the reliability of the anti-loosening bolt for tooth difference adjustment.

[0024] 2. The anti-loosening bolt for tooth difference adjustment provided by the present invention is provided with a fixing portion on the side of the base facing away from the adjuster; when in use, due to the setting of the fixing portion, the base can be inserted into the mounting hole of the required fastening component to prevent the anti-loosening bolt for tooth difference adjustment from rotating relative to the required fastening component, thereby achieving the purpose of forced braking.

[0025] 3. In the anti-loosening bolt for adjusting the tooth difference provided by the present invention, the retaining spring is an elastic member. When the retaining spring is installed, the retaining spring is elastically deformed under the action of external force, so that the positioning protrusion can move from one positioning groove to another positioning groove for fixing, thereby locking the sliding sleeve and preventing the sliding sleeve from slipping relative to the head. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of the anti-loosening bolt for adjusting the tooth difference provided by the present invention;

[0028] Figure 2 for Figure 1 Exploded diagram of

[0029] Figure 3 It is a schematic diagram of the structure of the bolt;

[0030] Figure 4 is a schematic diagram of the structure of the base;

[0031] Figure 5 Schematic diagram of the regulator structure;

[0032] Figure 6 is a schematic diagram of the structure of a nut;

[0033] Figure 7 is a schematic diagram of the structure of the sliding sleeve;

[0034] Figure 8 It is a schematic diagram of the structure of the retaining spring.

[0035] Description of reference numerals:

[0036] 1-bolt; 2-base; 21-fixing part; 3-adjuster; 4-first adjusting structure; 5-second adjusting structure; 6-third adjusting structure; 7-fourth adjusting structure; 8-sleeve; 81-recessed part; 82-positioning groove; 9-circlip; 91-positioning protrusion; 92-assembly hole; 10-head; 101-protrusion; 102-opening; 11-nut. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] like Figures 1 to 8 As shown, an anti-loosening bolt with tooth difference adjustment provided by the embodiment of the present invention comprises a bolt 1 and an anti-rotation structure at least provided at one end of the bolt 1; the anti-rotation structure comprises a base 2, an adjuster 3, a sleeve 8, a retaining spring 9 and a head 10 which are sequentially sleeved on the bolt 1; the base 2 is connected to the fastener to be fastened, the head 10 is connected to the bolt 1 and inserted into the base 2, suitable for pressing the base 2; the retaining spring 9 connects the head 10 and the sleeve 8 to limit the sleeve 8 from slipping relative to the head 10; a plurality of first adjustment structures are provided on the base 2 4, the regulator 3 is provided with a plurality of second adjustment structures 5, and the first adjustment structures 4 and the second adjustment structures 5 are meshed one by one; the regulator 3 is provided with a plurality of third adjustment structures 6, and the sliding sleeve 8 is provided with a plurality of fourth adjustment structures 7, and the third adjustment structures 6 and the fourth adjustment structures 7 are meshed one by one; the number of the first adjustment structures 4 and the second adjustment structures 5 is different from the number of the third adjustment structures 6 and the fourth adjustment structures 7, and the first adjustment structure 4 and the second adjustment structure 5 are fully meshed and connected with the third adjustment structure 6 and the fourth adjustment structure 7.

[0040] Among them, the first adjustment structure 4 is arranged on the base 2, the second adjustment structure 5 and the third adjustment structure 6 are arranged on both sides of the adjuster 3 respectively, and the fourth adjustment structure 7 is arranged on the sliding sleeve 8. During installation, the base 2 is first connected with the fastener to be fastened, and the bolt 1 and the head 10 are inserted along the base 2, wherein the bolt 1 and the head 10 are an integral connecting part, and the adjuster 3 and the sliding sleeve 8 are sequentially sleeved along the head 10. Since the number of the first adjustment structure 4 and the second adjustment structure 5 is different from that of the third adjustment structure 6 and the fourth adjustment structure 7, when the adjuster 3 rotates in the axial direction of the bolt 1, the rotation angle of the second adjustment structure 5 is greater than the rotation angle of the fourth adjustment structure 7, so that the position of the sliding sleeve 8 is offset, so that the angle difference between the second adjustment structure 5 and the fourth adjustment structure 7 can be used to perform precise adjustment, so that the adjuster 3 and the sliding sleeve 8 are accurately installed on the base 2. In the process of installation, the position deviation between the base 2 and the head 10 is adjusted. At the same time, since the number of the first adjustment structure 4 and the second adjustment structure 5 is different from that of the third adjustment structure 6 and the fourth adjustment structure 7, the locking position of the sliding sleeve 8 to the head 10 can be increased within one week, so that the head 10 can stay at each locking position, thereby achieving the purpose of real-time locking. A retaining spring 9 is provided on one side of the sliding sleeve 8 to limit the sliding of the sliding sleeve 8 relative to the head 10, thereby increasing the reliability of the anti-loosening bolt of the tooth difference adjustment.

[0041] like Figure 1 and Figure 2As shown, the anti-loosening bolt for tooth difference adjustment also needs to be used in conjunction with a nut 11. The structure of the nut 11 is the same as that of the head 10, but a thread is provided inside the nut 11. In actual use, if one side of the fastener needs to be tightened, the base 2 and the adjuster 3, the sleeve 8, and the retaining spring 9 can be directly installed on the head 10 of the bolt 1; if both sides of the fastener need to be tightened, it is necessary to separately install the nut 11 at the other end of the bolt 1, and install the base 2 and the adjuster 3, the sleeve 8, and the retaining spring 9 on the nut 11 for tightening.

[0042] like Figure 1 and Figure 2 As shown, the function can be realized when the number of the first adjustment structure 4, the second adjustment structure 5, the third adjustment structure 6, and the fourth adjustment structure 7 is greater than or equal to two. Specifically, the number of the first adjustment structure 4 and the second adjustment structure 5 can be 25, and the number of the third adjustment structure 6 and the fourth adjustment structure 7 can be 26. The first adjustment structure 4 and the second adjustment structure 5, and the third adjustment structure 6 and the fourth adjustment structure 7 can increase the locking position of the sliding sleeve 8 on the head 10 through the numerical difference; the head 10 can have 650 locking points within 360°, that is, 360° / (360° / 25-360° / 26)=650, so that the head 10 can stop 650 times for each rotation, and stop at each locking position, so as to lock at each locking position, and achieve the effect of real-time locking.

[0043] like Figure 4 and Figure 5 As shown, the first adjustment structure 4 and the second adjustment structure 5, the third adjustment structure 6, and the fourth adjustment structure 7 are all right-angled wedge-shaped teeth. In this embodiment, the fully meshing connection is that two right-angled wedge-shaped teeth arranged opposite to each other are connected to each other, so as to realize the close connection of the first adjustment structure 4 and the second adjustment structure 5, the third adjustment structure 6, and the fourth adjustment structure 7, and there is no gap after the connection. Since the first adjustment structure 4 and the second adjustment structure 5, the third adjustment structure 6, and the fourth adjustment structure 7 are right-angled wedge-shaped teeth, in the actual use process, taking the first adjustment structure 4 and the second adjustment structure 5 as an example, the second adjustment structure 5 on one side of the regulator 3 rotates toward the right-angled side of the first adjustment structure 4 on the base 2, but due to the setting of the right-angle side, the second adjustment structure 5 will be stuck during the rotation, so it will not rotate, thereby realizing forced braking of the regulator 3 and the base 2 to achieve the purpose of preventing loosening. Among them, the third adjustment structure 6 and the fourth adjustment structure 7 are the same as the first adjustment structure 4 and the second adjustment structure 5.

[0044] As a replaceable embodiment, the first adjustment structure 4, the second adjustment structure 5, the third adjustment structure 6, and the fourth adjustment structure 7 can be right-angled teeth; that is, the cross-section of each of the first adjustment structure 4, the second adjustment structure 5, the third adjustment structure 6, and the fourth adjustment structure 7 is a rectangular parallelepiped. During use, since the first adjustment structure 4 and the second adjustment structure 5 have right-angled sides on both sides, when rotating, the second adjustment structure 5 will be stuck due to the setting of the right-angled sides, so that it will not rotate, thereby achieving forced braking of the regulator 3 and the base 2 to achieve the purpose of preventing loosening.

[0045] like Figure 4 As shown, a fixing portion 21 is provided on the side of the base 2 facing away from the regulator 3, and the cross section of the fixing portion 21 is a rounded rectangle. When in use, due to the setting of the fixing portion 21, the base 2 can be inserted into the mounting hole of the part to be fastened, and the fastener is completely and tightly connected, fixing the relative position of the bolt 1 and the fastener to be fastened, preventing the bolt 1 from rotating relative to the part to be fastened, and cooperating with the first adjustment structure 4, the second adjustment structure 5, the third adjustment structure 6, and the fourth adjustment structure 7, thereby achieving the purpose of forced braking. The cross section of the fixing portion 21 is set to a rounded rectangle, which fully increases the utilization rate of the fixing portion 21 and facilitates processing.

[0046] As an alternative embodiment, the cross section of the fixing portion 21 can also be made into a triangle. Of course, it can also be other shapes, which can be set according to actual conditions.

[0047] Furthermore, a fifth adjustment structure is also included, and the fifth adjustment structure includes: at least two protrusions 101, which are arranged at intervals along the circumference of the head 10; at least two recesses 81, which are arranged at intervals along the inner wall of the sleeve 8 and are suitable for the protrusions 101 to be inserted, so as to limit the rotation of the head 10 relative to the sleeve 8. In this embodiment, the number of the protrusions 101 and the recesses 81 is adapted, and specifically the number of the protrusions 101 and the recesses 81 are both six. Of course, it can also be set to multiple, which is set according to the actual situation. At this time, the locking position is increased by the numerical difference between the first adjustment structure 4 and the second adjustment structure 5, the third adjustment structure 6 and the fourth adjustment structure 7, and the fifth adjustment mechanism; specifically, 360° / 6-(360° / 25-360° / 25)×X>0, and X is equal to or less than 108. Taking the maximum integer value of X, we get X=108. At the same time, substituting 108 into 360° / (360° / 6-(360° / 25-360° / 26)*X), the resulting value is 1950. Therefore, after the first adjustment structure 4 and the second adjustment structure 5 are combined with the third adjustment structure 6 and the fourth adjustment structure 7 and the fifth adjustment mechanism, there are a total of 1950 locking positions. Since the diameter of the bolt 1 is limited, after having 1950 locking positions, the distance between two adjacent locking positions can reach the micron level, thereby achieving the purpose of real-time locking and further achieving the purpose of preventing loosening.

[0048] like Figure 3 and Figure 6 As shown, an opening 102 is provided along the circumference of the head 10, wherein the depth of the opening 102 is greater than the height of the retaining spring 9. The opening 102 provides a receiving space for the retaining spring 9, so that the retaining spring 9 is installed in the receiving space, thereby limiting the slipping of the sleeve 8, improving the reliability of the anti-loosening bolt for tooth difference adjustment, and further achieving the purpose of anti-loosening.

[0049] like Figure 7 and Figure 8 As shown, it also includes a positioning structure of the retaining spring 9 arranged on the sleeve 8, and the positioning structure includes: a plurality of positioning grooves 82, which are arranged at intervals on the sleeve 8; a plurality of positioning protrusions 91, which are arranged at intervals on the retaining spring 9, wherein the retaining spring 9 is a non-endless retaining spring 9, and the positioning protrusion 91 is arranged on a side of the non-endless retaining spring 9 close to the sleeve 8, which is suitable for the positioning protrusion 91 to be inserted into the positioning groove 82 to limit the rotation of the sleeve 8 relative to the retaining spring 9.

[0050] Specifically, the clamp 9 is an elastic member. The number of the positioning grooves 82 is twice the number of the positioning protrusions 91; in this embodiment, the number of the positioning protrusions 91 is 6, and the number of the positioning grooves 82 is 12; when installing the clamp 9, the clamp 9 is inserted into the assembly hole 92 on the clamp 9, and the clamp 9 can be elastically deformed under the action of external force, so that the positioning protrusion 91 moves from one of the positioning grooves 82 to another positioning groove 82 for fixing, thereby locking the sliding sleeve 8; the setting of the positioning grooves 82 and the positioning protrusions 91 increases the rotation resistance of the clamp 9 relative to the sliding sleeve 8, thereby preventing the rotation of the clamp 9 from causing slippage, and increasing reliability.

[0051] As an alternative implementation, the positioning protrusion 91 may also be provided on the sliding sleeve 8 ; and the positioning groove 82 may be provided on the retaining ring 9 .

[0052] As an alternative implementation, the retaining ring 9 may also be an open retaining ring. In actual use, the type of retaining ring can be selected according to needs.

[0053] Specific installation method: the base 2 is sleeved in sequence along the extension direction of the bolt 1, and the fixing part 21 is inserted into the installation hole on the required fastening component, and then the bolt 1, the head 10, and the adjuster 3 are inserted in sequence, so that the first adjustment structure 4 on the adjuster 3 is fully meshed and connected with the second adjustment structure 5 on the base 2; and the sliding sleeve 8 is sleeved on the head 10, so that the third adjustment structure 6 on the other side of the adjuster 3 is fully meshed and connected with the fourth adjustment structure 7 on the sliding sleeve 8; then the retaining ring 9 is inserted into the opening 102 of the head 10, and the retaining ring 9 is inserted into the assembly hole 92, so that the positioning protrusion 91 on the retaining ring 9 is rotated from one of the positioning grooves 82 to the adjacent positioning groove 82, that is, the installation on one side is completed; then the base 2 is Insert the other end of the bolt 1, and insert the fixing part into the mounting hole on the required fastening component, then screw in the nut 11 in turn, and sleeve the adjuster 3 on the nut 11, so that the first adjustment structure 4 on the adjuster 3 is fully meshed and connected with the second adjustment structure 5 on the base 2; and sleeve the sliding sleeve 8 on the nut 11, so that the third adjustment structure 6 on the other side of the adjuster 3 is fully meshed and connected with the fourth adjustment structure 7 on the sliding sleeve 8; then insert the retaining ring 9 into the opening 102 of the nut 11, and then insert the retaining ring 9 clamp into the assembly hole 92, so that the positioning protrusion 91 on the retaining ring 9 is rotated from one of the top grooves to the adjacent positioning groove, and the installation of the nut 11 on the other side of the bolt 1 and the base 2, the adjuster 3, the sliding sleeve 8 and the retaining ring 9 is completed.

[0054] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A tooth difference adjustment anti-loosening bolt, characterized in that: It comprises a bolt (1) and an anti-rotation structure provided at least at one end of the bolt (1); the anti-rotation structure comprises a base (2), an adjuster (3), a sliding sleeve (8), a retaining spring (9) and a head (10) which are sequentially sleeved on the bolt (1); The base (2) is connected to the fastener, the head (10) is connected to the bolt (1) and inserted into the base (2), suitable for pressing the base (2); the adjuster (3) and the sliding sleeve (8) are sequentially sleeved on the head (10), a fifth adjustment structure is provided between the head (10) and the sliding sleeve (8), and the fifth adjustment structure is used to limit the rotation of the head (10) relative to the sliding sleeve (8); the retaining spring (9) connects the head (10) and the sliding sleeve (8), and limits the sliding sleeve (8) from slipping relative to the head (10); The base (2) is provided with a plurality of first adjustment structures (4), the adjuster (3) is provided with a plurality of second adjustment structures (5), the first adjustment structures (4) and the second adjustment structures (5) being meshed in a one-to-one correspondence; the adjuster (3) is provided with a plurality of third adjustment structures (6), the sliding sleeve (8) is provided with a plurality of fourth adjustment structures (7), the third adjustment structures (6) and the fourth adjustment structures (7) being meshed in a one-to-one correspondence; The number of the first adjustment structure (4) and the fourth adjustment structure (7) is different; the first adjustment structure (4) and the second adjustment structure (5) are fully meshed and connected; and the third adjustment structure (6) and the fourth adjustment structure (7) are fully meshed and connected.

2. The anti-loosening bolt for adjusting the tooth difference according to claim 1, characterized in that: The number of the first adjustment structures (4) and the second adjustment structures (5) is 25, and the number of the third adjustment structures (6) and the fourth adjustment structures (7) is 26.

3. The anti-loosening bolt for adjusting the tooth difference according to claim 2, characterized in that: The first adjustment structure (4), the second adjustment structure (5), the third adjustment structure (6), and the fourth adjustment structure (7) are all right-angled wedge-shaped teeth.

4. The anti-loosening bolt for adjusting the tooth difference according to claim 1, characterized in that: A fixing portion (21) is provided on a side of the base (2) facing away from the regulator (3).

5. The anti-loosening bolt for adjusting the tooth difference according to claim 4, characterized in that: The cross section of the fixing portion (21) is a rounded rectangle.

6. The anti-loosening bolt for adjusting the tooth difference according to claim 5, characterized in that: The fifth adjustment structure comprises: At least two protrusions (101) are arranged at intervals along the circumference of the head (10); At least two recessed portions (81) are arranged at intervals along the inner wall of the sliding sleeve (8) and are suitable for receiving the protruding portion (101) to be inserted therein, so as to limit the rotation of the head portion (10) relative to the sliding sleeve (8).

7. The anti-loosening bolt for adjusting the tooth difference according to claim 6, characterized in that: The number of the protruding portions (101) and the number of the recessed portions (81) are both six.

8. The anti-loosening bolt for adjusting the tooth difference according to any one of claims 1 to 7, characterized in that: An opening (102) is provided along the circumference of the head (10), and the opening (102) provides a receiving space for the clamping spring (9).

9. The anti-loosening bolt for adjusting the tooth difference according to claim 8, characterized in that: Also included is a positioning structure, the positioning structure comprising: A positioning groove (82) is provided on one of the sliding sleeve (8) or the retaining spring (9); A positioning protrusion (91) is provided on the other of the sliding sleeve (8) or the retaining spring (9), and is suitable for the positioning protrusion (91) to be inserted into the positioning groove (82) to limit the rotation of the sliding sleeve (8) relative to the retaining spring (9).

10. The anti-loosening bolt for adjusting the tooth difference according to any one of claims 1 to 7, characterized in that: The clamping spring (9) is an elastic member.

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