Thread locking structure

Abstract

The utility model discloses a thread locking structure, which relates to the technical field of thread locking and comprises a main body piece, a locked piece, a locking nut and a locking screw. The main body piece is provided with a mounting cavity, the mounting cavity is provided with a first inner wall, and a first through hole penetrates through the first inner wall. The locked piece is provided with a second through hole, the locked piece is arranged corresponding to the first inner wall, and the second through hole and the first through hole are arranged oppositely. And the locking nut is arranged in the mounting cavity. The locking screw is provided with a threaded end, and the threaded end sequentially penetrates through the first penetrating hole and the second penetrating hole and extends into the mounting cavity. The threaded end of the locking screw is guided in the first direction to enter a threaded hole of the locking nut, so that the locking nut moves on the inner plane of the mounting cavity to adjust the matched alignment position. The locking nut rotates along the axis extending in the first direction, and the locking nut can be installed in a rotation stopping mode and linearly moves in the first direction to abut against the first inner wall so that the locked piece can be locked on the main body piece.

Description

Technical Field

[0001] This utility model relates to the field of threaded fastening technology, and in particular to a threaded fastening structure. Background Technology

[0002] Fasteners are a general term for mechanical parts used to fasten two or more parts (or components) together to form a single unit. They are commonly used in equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters, and supplies. Common fasteners include screws and lock nuts. In use, the lock nut is usually inserted into the main component, and then the lock screw is passed through a hole in the component being fastened, so that the nut of the screw rests against the component being fastened. When there is a misalignment between the main component and the component being fastened, causing eccentricity between the hole and the lock screw, the screw can easily become misaligned. Utility Model Content

[0003] The main purpose of this invention is to propose a threaded locking structure that aims to reduce the skewing of the screw.

[0004] To achieve the above objectives, the threaded locking structure proposed in this utility model includes:

[0005] The main body has a mounting cavity, the mounting cavity having a first inner wall in a first direction, and the first inner wall having a first through hole;

[0006] The locked member has a second through hole arranged along a first direction, the locked member is disposed corresponding to the first inner wall, and the second through hole is aligned with the first through hole;

[0007] A locking nut is disposed within the mounting cavity; and,

[0008] A locking screw has a threaded end, which passes through the second through hole and the first through hole in sequence and extends into the mounting cavity;

[0009] The threaded end of the locking screw is guided into the threaded hole of the locking nut along the first direction, and the locking nut moves within the mounting cavity to adjust the mating and alignment position.

[0010] The locking nut moves along an axis extending in a first direction. The locking nut is capable of anti-rotation installation and moves linearly along the first direction until it abuts against the first inner wall, so that the locked part is locked onto the main body. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0012] Figure 1 A schematic diagram of an embodiment of the threaded locking structure provided by this utility model;

[0013] Figure 2 for Figure 1 A partial structural diagram of the main component;

[0014] Figure 3 for Figure 2 A schematic diagram of the structure when the lock nut is fastened;

[0015] Figure 4 for Figure 2 A schematic diagram showing the position of the locking nut in the structure;

[0016] Figure 5 for Figure 2 The anti-rotation mechanism of the locking nut in the structure is illustrated in the schematic diagram.

[0017] Figure 6 for Figure 1 A schematic diagram of the filling port structure;

[0018] Figure 7 for Figure 1 A cross-sectional structural diagram of the main component.

[0019] Explanation of icon numbers:

[0020] 1. Main body; 11. Mounting cavity; 111. First inner wall; 112. First through hole; 113. Second inner wall surface; 114. Third inner wall; 115. Positioning groove; 12. Loading port; 121. First port wall; 122. Second port wall; 2. Locked part; 21. Second through hole; 22. Countersunk hole; 3. Locking nut; 4. Locking screw; 41. Threaded end; 42. Nut.

[0021] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] Fasteners are a general term for mechanical parts used to fasten two or more parts (or components) together into a single unit. They are commonly used in equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters, and supplies. Common fasteners include screws and lock nuts. In use, the lock nut is usually inserted into the main component, and then the lock screw is passed through a hole in the locked component, with the nut of the screw resting against the locked component. When there are errors between the main component and the locked component, such as the cumulative tolerances and assembly tolerances between the main component and the locked component, it is easy for the lock screw to become misaligned, skewed, or not properly positioned, causing eccentricity between the hole and the lock screw, and easily leading to skew of the screw.

[0026] This utility model proposes a threaded locking structure.

[0027] Please see Figure 1 , Figure 2 and Figure 3In one embodiment of this utility model, the threaded locking structure includes a main body 1, a locked member 2, a locking nut 3, and a locking screw 4. The main body 1 has a mounting cavity 11, which has a first inner wall 111 in a first direction, and a first through hole 112 passing through the first inner wall 111. The locked member 2 has a second through hole 21 arranged along the first direction, and the locked member 2 is disposed corresponding to the first inner wall 111, with the second through hole 21 and the first through hole 112 aligned. The locking nut 3 is disposed within the mounting cavity 11. The locking screw 4 has a threaded end 41, which passes sequentially through the second through hole 21 and the first through hole 112, and extends into the mounting cavity 11. The threaded end 41 of the locking screw 4 is guided into the threaded hole of the locking nut 3 along the first direction, and the locking nut 3 moves within the mounting cavity 11 to adjust the mating position; the locking nut 3 moves along the axis extending in the first direction, the locking nut 3 can be anti-rotated and moves linearly along the first direction until it abuts against the first inner wall 111, so that the locked part 2 is locked onto the main body 1.

[0028] In the technical solution of this utility model, by setting an installation cavity 11, after the threaded end 41 passes through the second through hole 21 and the first through hole 112 in sequence and extends into the installation cavity 11, the threaded end 41 can enter the threaded hole of the locking nut 3, and the locking nut 3 can move in the plane of the installation cavity 11, so that the locking nut 3 is aligned with the second through hole 21, reducing the skewness of the locking screw 4; then, when the locking screw 4 is rotated, the locking nut 3 stops rotating, and the locking nut 3 can slide along the first direction and abut against the first inner wall 111, thereby locking the locked part 2 onto the main body 1; by allowing the locking nut 3 to move in the plane of the installation cavity 11 to adjust the mating and alignment position, the locking nut 3 can be aligned with the second through hole 21, and the skewness of the locking screw 4 is reduced overall.

[0029] The main component 1 can be the outer shell of the product. In this case, the locked component 2 can be an accessory or decorative part locked onto the outer shell. The diameter of the first through hole 112 is larger than the outer diameter of the threaded end 41 of the locking screw 4, so that the threaded end 41 of the locking screw 4 can pass through the first through hole 112. And the opening size of the first through hole 112 is smaller than that of the locking nut 3, so as to prevent the locking nut 3 from passing through the first through hole 112. The threaded hole of the locking nut 3 is flared along the first direction, so that when there is a slight eccentricity between the threaded end 41 and the locking nut 3, the threaded end 41 can be inserted into the threaded hole of the locking nut 3, thereby facilitating the locking screw 4 to drive the locking nut 3 to move within the plane of the mounting cavity 11.

[0030] Please see Figure 2 , Figure 4 and Figure 5 The inner wall of the mounting cavity 11 has a second inner wall surface 113 in a second direction. The second inner wall surface 113 is planar, so that the peripheral end of the locking nut 3 abuts against the second inner wall surface 113 to prevent rotation. When the peripheral end of the locking nut 3 abuts against the second inner wall surface 113, the locking nut 3 can be locked. The second inner wall surface 113 can be a straight line or a curved surface, as long as it can apply a reverse pressure to the locking nut 3 when the peripheral end of the locking nut 3 abuts against the second inner wall surface, so as to limit the rotation of the locking nut 3.

[0031] Specifically, after the threaded end 41 of the locking screw 4 is guided into the threaded hole of the locking nut 3 along the first direction, the locking nut 3 moves within the inner plane of the mounting cavity 11. When the locking screw 4 rotates, the locking nut 3 rotates a certain angle, and its peripheral end abuts against the second inner wall surface 113, thereby locking the locking nut 3. The rotatable angle of the locking nut 3 depends on the axial position of the locking nut 3, the size of the locking nut 3, and the position of the second inner wall surface 113.

[0032] Two second inner wall surfaces 113 are provided and arranged opposite each other in the second direction. The distance between the two second inner wall surfaces 113 is smaller than the diameter of the circumscribed circle of the locking nut 3 and larger than the diameter of the inscribed circle of the locking nut 3. By setting the distance between the two second inner wall surfaces 113 to be smaller than the diameter of the circumscribed circle of the locking nut 3, after the locking nut 3 rotates a certain angle, the opposite two ends of the locking nut 3 on the periphery respectively abut against the two inner wall surfaces, thereby limiting the rotation of the locking nut 3. By setting the distance between the two second inner wall surfaces 113 to be larger than the diameter of the inscribed circle of the locking nut 3, it is possible to ensure that the locking nut 3 can move within the inner plane of the mounting cavity 11.

[0033] Specifically, the cross-section of the mounting cavity 11 perpendicular to the axis extending in the first direction can be square, and the locking nut 3 can be a square nut. The side length of the cross-section of the mounting cavity 11 is greater than the diameter of the inscribed circle of the locking nut 3, and the side length of the cross-section of the mounting cavity 11 is less than the diameter of the circumscribed circle of the locking nut 3. In other feasible embodiments, the cross-section of the mounting cavity 11 perpendicular to the axis extending in the first direction can be a regular hexagon, a regular octagon, etc.

[0034] When the cross section of the mounting cavity 11 perpendicular to the axis extending in the first direction is a regular polygon, and the number of sides of the cross section of the mounting cavity 11 perpendicular to the axis extending in the first direction is odd, the distance between one corner of the cross section of the mounting cavity 11 and the opposite side must be less than the diameter of the circumcircle of the locking nut 3 and greater than the diameter of the incircle of the locking nut 3.

[0035] Please see Figure 3 , Figure 6 and Figure 7 To facilitate the insertion of the locking nut 3 into the mounting cavity 11, a loading port 12 is provided on the peripheral end of the main body 1. The loading port 12 is connected to the mounting cavity 11 and is used for the locking nut 3 to pass through. When the locking nut 3 is inserted into the mounting cavity 11, it can be inserted into the loading port 12 and pushed into the mounting cavity 11 from the loading port 12. The shape and size of the loading port 12 are not limited here.

[0036] The mounting cavity 11 has a third inner wall 114 opposite to the first inner wall 111. The third inner wall 114 has a positioning groove 115, which is aligned with the first through hole 112 to accommodate and limit the movement of the locking nut 3. After the locking nut 3 is inserted into the mounting cavity 11, it can be at least partially inserted into the positioning groove 115. When the threaded end 41 passes sequentially through the second through hole 21 and the first through hole 112 and extends into the mounting cavity 11, it facilitates the insertion of the threaded end 41 into the threaded hole of the locking nut 3. The cross-section of the positioning groove 115 can be circular, or it can depend on the shape of the locking nut 3. It is only necessary to ensure that the positioning groove 115 has depth so that when at least a portion of the locking nut 3 is located within the positioning groove 115, the movement of the locking nut 3 in the plane is limited.

[0037] Please see Figure 1 , Figure 2 and Figure 3 The mounting cavity 11 has a third inner wall 114 opposite to the first inner wall 111. The third inner wall 114 has a positioning groove 115 for the locking nut 3 to be positioned and accommodated. The oral cavity wall of the loading port 12 includes a first oral wall 121 near the locked member 2 and a second oral wall 122 away from the locked member 2. The second oral wall 122 is located on the bottom wall of the positioning groove 115 near the locked member 2. After the locking nut 3 is loaded into the mounting cavity 11 from the loading port, the locking nut 3 can fall into the positioning groove 115, thus achieving the positioning and accommodation of the locking nut 3 within the positioning groove 115.

[0038] Specifically, the positioning groove 115 is formed on the third inner wall 114, and the third inner wall 114 is not higher than the second opening wall 122 of the loading port 12. The third inner wall 114 may also be lower than the second opening wall 122 of the loading port 12.

[0039] The cross-sectional area of ​​the positioning groove 115 gradually decreases from its opening towards its bottom. This ensures that the locking nut 3 can automatically align itself when it falls into the positioning groove 115.

[0040] A countersunk hole 22 is formed on the side of the locked component 2 away from the main body 1, and the nut 42 of the locking screw is located in the countersunk hole 22. By providing the countersunk hole 22, the nut 42 of the locking screw can be protected, reducing the exposure of the nut 42 of the locking screw.

[0041] The difference between the diameter of the second through hole 21 and the diameter of the threaded end 41 of the locking screw 4 is no greater than 0.1 mm. This reduces the eccentricity of the locking screw 4 relative to the second through hole 21, ensuring that the locking screw 4 moves with the second through hole 21.

[0042] The first through hole 112, the second through hole 21, the locking nut 3, and the locking screw 4 are configured as locking groups in a one-to-one correspondence. Multiple locking groups are provided and spaced apart along the circumference of the locked member 2. The cooperation of multiple locking groups can improve the stability of the locking of the locked member 2 on the main body 1.

[0043] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A threaded locking structure, characterized in that, include: The main body has a mounting cavity, the mounting cavity having a first inner wall in a first direction, and the first inner wall having a first through hole; The locked member has a second through hole arranged along a first direction, the locked member is disposed corresponding to the first inner wall, and the second through hole is aligned with the first through hole; A locking nut is disposed within the mounting cavity; and, A locking screw has a threaded end, which passes through the second through hole and the first through hole in sequence and extends into the mounting cavity; The threaded end of the locking screw is guided into the threaded hole of the locking nut along the first direction, and the locking nut moves within the mounting cavity to adjust the mating and alignment position. The locking nut moves along an axis extending in a first direction. The locking nut is capable of anti-rotation installation and moves linearly along the first direction until it abuts against the first inner wall, so that the locked part is locked onto the main body.

2. The threaded locking structure as described in claim 1, characterized in that, The inner wall of the mounting cavity has a second inner wall surface in a second direction. The second inner wall surface is planar, so that the peripheral end of the locking nut abuts against the second inner wall surface to prevent rotation.

3. The threaded locking structure as described in claim 2, characterized in that, Two second inner wall surfaces are provided and are arranged opposite each other in the second direction. The distance between the two second inner wall surfaces is less than the diameter of the circumcircle of the locking nut and greater than the diameter of the incircle of the locking nut.

4. The threaded locking structure as described in claim 1, characterized in that, A loading port is provided on the peripheral end of the main body, and the loading port is connected to the mounting cavity. The loading port is used for the locking nut to pass through.

5. The threaded locking structure as described in claim 4, characterized in that, The mounting cavity has a third inner wall disposed opposite to the first inner wall, and the third inner wall is provided with a positioning groove for the locking nut to be accommodated and positioned. The oral cavity wall of the loading port includes a first oral cavity wall close to the locked member and a second oral cavity wall away from the locked member, the second oral cavity wall being located on the bottom wall of the positioning groove on the side close to the locked member.

6. The threaded locking structure as described in claim 1, characterized in that, The mounting cavity has a third inner wall that is disposed opposite to the first inner wall. The third inner wall is provided with a positioning groove that is aligned with the first through hole for the locking nut to be accommodated and positioned.

7. The threaded locking structure as described in claim 6, characterized in that, The cross-sectional area of ​​the positioning groove gradually decreases from the opening of the groove towards its bottom.

8. The threaded locking structure as described in claim 1, characterized in that, A countersunk hole is formed on the side of the locked component away from the main component, and the nut of the locking screw is located in the countersunk hole.

9. The threaded locking structure as described in claim 1, characterized in that, The difference between the diameter of the second through hole and the diameter of the threaded end of the locking screw is no greater than 0.1 mm.

10. The threaded locking structure as described in claim 1, characterized in that, The first through hole, the second through hole, the locking nut, and the locking screw are configured as locking groups in a one-to-one correspondence. Multiple locking groups are provided and are spaced apart along the circumference of the locked part.

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