A push-pull locking dust cover

Abstract

The present invention relates to a push-pull locking dust cover, comprising a connecting nut and an inner shell assembled in the connecting nut; a stop structure is provided on the inner wall of the connecting nut, an axial stop platform is provided on the outer circumference of the inner shell, and a gap that cooperates with the stop structure is provided on the axial stop platform; an end cover is connected to one end of the inner shell, and a spring is installed between the axial stop platform and the end cover; during assembly, the plug-in end of the inner shell is inserted into the tail end of the connecting nut, and after the stop structure passes through the corresponding gap, the connecting nut rotates relative to the inner shell and squeezes the spring, and the stop structure abuts against the axial stop platform under the action of the spring force, thereby realizing the assembly between the inner shell and the connecting nut. The present invention enables the inner shell and the connecting nut to be flexibly assembled and disassembled through structural design, and is assembled and unlocked with the connector in a push-pull manner. The structure is simple, avoiding the defects of inconvenient assembly and disassembly of threaded connections and low processing efficiency, while having the advantages of high reliability, diverse structural settings, and a wide range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, in particular to a push-pull locking dust cover for a connector. Background Art

[0002] The existing connector includes a connector housing and a dust cover mounted on the connector housing. Commonly used locking and fixing methods for the dust cover include a threaded connection and a push-pull connection.

[0003] The threaded connection is fixed to the housing by screwing the thread, such as Figure 1 This type of dust cover is connected to the connector housing through threads, which makes it inconvenient to disassemble and assemble when working at height on communication equipment, and the thread processing efficiency is low.

[0004] The push-pull connection is achieved by a locking structure or feature provided on the connector housing, such as Figure 2 This type of dust cover may cause slight interference fit between the connecting nut and the inner housing to be damaged due to the axial force during use, and its reliability is relatively low. Summary of the Invention

[0005] In response to the defects of the existing technology, the present invention designs a push-pull locking dust cover. The inner shell and the connecting nut can be flexibly assembled to form a dust cover. The dust cover and the connector are assembled and unlocked in a push-pull manner. The structure is simple, avoiding the defects of inconvenient assembly and disassembly of threaded connections and low processing efficiency. At the same time, it has the advantages of high reliability, diverse structural settings, and a wide range of applications.

[0006] The present invention is specifically implemented through the following technical solutions. According to the present invention, a push-pull locking dust cover includes a connecting nut and an inner shell assembled in the connecting nut; the inner wall of the connecting nut is provided with a stop structure; one end of the inner shell is a plug-in end for plugging with a connector plug-in, and the other end is used to connect to the end cover; an axial stop platform is provided on the inner shell, which is arranged around the outer circumference of the inner shell, and a gap corresponding to the stop structure is provided on the axial stop platform; the inner shell also includes a spring, which is axially limited between the axial stop platform and the end cover;

[0007] When assembling the inner housing and the connecting nut, the inner housing's plug-in end is inserted into the connecting nut's rear end. After the stop structure inside the connecting nut passes through the corresponding gap, the connecting nut rotates relative to the inner housing and compresses the spring. The stop structure, under the action of the spring force, abuts against the axial stop, completing the assembly between the inner housing and the connecting nut. This solution allows for flexible assembly between the inner housing and the connecting nut, saves assembly space, and has the advantage of high reliability.

[0008] Furthermore, the inner shell also includes an assembly stop, which is arranged close to the gap and is axially located between the axial stop and the end cover; after the connecting nut and the inner shell are assembled, the assembly stop is located between the gap and the stop structure to prevent accidental touch from causing the stop structure to rotate, causing the connecting nut and the inner shell to separate.

[0009] Furthermore, the inner shell also includes a radial stop platform, which is arranged on the outer circumferential surface of the inner shell, and a stop area is formed between the radial stop platform and the assembly stop platform; after the inner shell and the connecting nut are assembled, the stop platform structure is located in the stop area, and the radial stop platform and the corresponding assembly stop platform are used to achieve radial limitation of the stop platform structure, thereby preventing the connecting nut from excessively rotating and causing the stop platform structure to fall out of the gap, resulting in separation of the connecting nut from the inner shell.

[0010] Furthermore, the assembly stop is provided with a bevel or rounded feature on one side close to the gap, and the stop structure is provided with a bevel or rounded feature on one side close to the corresponding assembly stop. The stop structure and the corresponding assembly stop are matched through the bevel or rounded features. Under the action of torque force, the stop structure can squeeze the corresponding assembly stop and enter the corresponding stop area to achieve abutment with the axial stop.

[0011] Furthermore, the axial direction of the assembly stop is perpendicular to or has a certain angle with the circumference of the axial stop.

[0012] Furthermore, there are two axial stop platforms, both located on one side of the end cover. The one close to the plug-in end of the inner shell is defined as the first axial stop platform, and the one close to the end cover is defined as the second axial stop platform. The outer diameter of the first axial stop platform is larger than the outer diameter of the spring, and the outer diameter of the second axial stop platform is smaller than the inner diameter of the spring. The spring is installed between the first axial stop platform and the end cover, and the second axial stop platform is sleeved inside the spring. When the connecting nut and the inner shell are plugged into each other, the stop platform structure passes through the gap of the first axial stop platform and is stopped by the second axial stop platform, thereby avoiding excessive plug-in force causing the spring to be stuck.

[0013] Furthermore, the axial length of the assembly stop is smaller than the axial distance between the first axial stop and the second axial stop, and the axial distance between the assembly stop and the second axial stop is larger than the axial length of the stop structure.

[0014] Furthermore, a radial stop platform is provided on the side of the first axial stop platform close to the end cover, and a stop area is formed between the radial stop platform and the corresponding assembly stop platform. The axial length of the radial stop platform is smaller than the axial spacing between the first axial stop platform and the second axial stop platform, and the axial spacing between the radial stop platform and the second axial stop platform is greater than the axial length of the stop platform structure.

[0015] Furthermore, the axial lengths of the assembly stop platform and the radial stop platform are both equal to the axial distance between the first axial stop platform and the second axial stop platform.

[0016] Furthermore, a limiting groove is provided on the outer circumference of the plug-in end of the inner housing, and a transition structure is also provided at the plug-in end of the inner housing. Through this transition structure and the reducing structure within the connecting nut, the distance between the inner housing and the connecting nut at the plug-in end of the dust cover is greater than the distance between the inner housing and the connecting nut inside the dust cover. When the dust cover and the connector plug are plugged together, the locking member on the connector is inserted between the inner housing and the connecting nut and eventually enters the limiting groove and is compressed by the connecting nut, thereby achieving locking between the dust cover and the connector plug. When unlocking, the connecting nut is pulled outward, and the compression spring of the connecting nut moves outward, causing the reducing structure on the inner wall of the front end of the connecting nut to move to the connector locking member, thereby increasing the radial spacing at the locking member. The locking member pops out of the limiting groove, and the dust cover and connector plug are unlocked. Through the above solution, the dust cover and the connector plug are assembled and unlocked in a push-pull manner, avoiding the defects of inconvenient assembly and disassembly of threaded connections and low processing efficiency.

[0017] Compared with the prior art, the present invention has significant advantages and beneficial effects. By means of the above technical solution, the push-pull locking dust cover of the present invention can achieve considerable technological advancement and practicality, and has a wide range of utilization value. It has at least the following advantages:

[0018] The present invention enables the inner shell and the connecting nut to be flexibly assembled and disassembled through structural design. The stop structure in the connecting nut passes through the gap on the inner shell and squeezes the spring, and finally enters the stop area under the action of torque force, and is pushed by the spring to abut against the axial stop platform on the inner shell. When disassembling, the connecting nut is rotated, and the stop structure squeezes the spring and can escape from the gap on the inner shell.

[0019] The connecting nut is provided with a reducing structure at the plug-in end, and the inner housing is provided with a transition structure at the plug-in end. The reducing and transition structures make the distance between the inner housing and the connecting nut at the plug-in end of the dust cover larger than the distance between the inner housing and the connecting nut inside the dust cover, so that the locking member on the connector can smoothly enter between the inner housing of the dust cover and the connecting nut, and finally get stuck in the limiting groove on the inner housing, and be pressed by the connecting nut to achieve the locking between the dust cover and the connector, achieving the effect of dustproof and water drainage. To unlock the dust cover and the connector, you only need to pull the connecting nut outward. The connecting nut moves outward and compresses the spring to move the reducing structure at its plug-in end to the locking member position. The distance at the locking member becomes larger, allowing the locking member to disengage, achieving unlocking.

[0020] The present invention has a simple structure, avoids the defects of inconvenient assembly and disassembly of threaded connection and low processing efficiency, and has the advantages of high reliability, diverse structural settings and wide application range.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the existing dust cover and connector being connected by threads;

[0023] Figure 2 This is a schematic diagram of an existing dust cover and connector using a push-pull connection;

[0024] Figure 3 Schematic diagram of the dust cover of the present invention, wherein (a) is a three-dimensional diagram of the dust cover, and (b) is a longitudinal sectional view of the dust cover.

[0025] Figure 4 Schematic diagrams of the structure of the assembly stop on the inner shell, wherein (a) is a schematic diagram in which the axial direction of the assembly stop is perpendicular to the axial stop, and (b) is a schematic diagram in which the axial direction of the assembly stop is at a certain angle to the axial stop;

[0026] Figure 5 Schematic diagram of the assembly process of the inner housing and the connecting nut, wherein (a) is a schematic diagram before assembly, (b) is a schematic diagram during assembly; (c) is a transverse cross-sectional view after assembly;

[0027] Figure 6 It is a cross-sectional view of the dust cover and the connector plug-in after being plugged and locked together;

[0028] Figure 7 Schematic diagrams of the inner shell and the connecting nut structure, wherein (a) is a schematic diagram of the inner shell outer circumference further provided with a radial stop platform, and (b) is a schematic diagram of the inner stop platform structure of the connecting nut;

[0029] Figure 8 It is a schematic diagram of an axial stop platform 2 provided outside the inner shell, wherein (a) is a schematic diagram of an assembly in which the axial length of the stop platform is equal to the axial distance between the first axial stop platform and the second axial stop platform, and (b) is a schematic diagram in which a radial stop platform is further provided on the basis of (a).

[0030]

Components and symbols

[0031] 1: Connecting nut; 9: Stop structure;

[0032] 2: Inner shell; 9-1: First stop structure;

[0033] 3: End cover; 9-2: Second stop structure;

[0034] 4: Axial stopper; 10: Limiting groove;

[0035] 4-1: first axial stop; 11: transition structure;

[0036] 4-2: Second axial stop; 12: Locking piece;

[0037] 5: gap; 13: first radial stop;

[0038] 5-1: first gap; 14: second radial stop;

[0039] 5-2: second gap; 15: first stop area;

[0040] 6: Spring; 16: Second stop area;

[0041] 7: Assembly stop; 17: First inclined surface;

[0042] 7-1: first assembly stop; 18: second inclined surface;

[0043] 7-2: Second assembly stop; 19-connector to plug-in.

[0044] 8: variable diameter structure; DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments and drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Generally, the descriptions and embodiments shown in the drawings herein can be implemented by various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of protection claimed, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] like Figure 3 As shown, the present invention provides a push-pull locking dust cover, comprising a connecting nut 1 and an inner housing 2 disposed within the connecting nut. The inner wall of the connecting nut is provided with two or more stopper structures 9, which are evenly distributed along the same circumference of the inner wall of the connecting nut. The inner housing is a hollow structure, with an end cap 3 connected to one end and an opening at the other end for mating with a connector plug.

[0047] like Figure 4-Figure 7As shown, in one embodiment, an axial stop platform 4 is provided on the outer circumference of the inner shell body. The axial stop platform is provided around the outer circumference of the inner shell body, and two or more gaps 5 that cooperate with the stop platform structure are provided on the axial stop platform. The two or more gaps are evenly distributed along the circumference of the axial stop platform. An assembly stop platform 7 is provided on the side of the axial stop platform close to the end cover. The assembly stop platform is provided close to the gap and is axially located between the axial stop platform 4 and the end cover 3. An assembly stop platform is provided on the side of the axial stop platform close to the end cover on each side of the gap. A spring 6 is also installed between the axial stop platform and the end cover. The outer diameters of the axial stop platform and the end cover are both larger than the outer diameter of the spring, so that the spring is axially limited between the axial stop platform and the end cover, and the assembly stop platform is radially located inside the spring.

[0048] The end of the inner shell with an end cover is defined as the tail end, and the end without an end cover is defined as the plug-in end. The inner wall of one end of the connecting nut is provided with a diameter-reducing structure 8. The end of the connecting nut with the diameter-reducing structure is defined as the front end, and the other end is defined as the tail end. When the inner shell and the connecting nut are assembled, the plug-in end of the inner shell is inserted into the tail end of the connecting nut. After the stop structure in the connecting nut passes through the corresponding gap, the connecting nut rotates relative to the inner shell and squeezes the spring. The stop structure abuts against the axial stop under the action of the spring force, thereby realizing the assembly between the inner shell and the connecting nut. After the connecting nut and the inner shell are assembled, the assembly stop is located between the gap and the stop structure to prevent accidental touch from causing the stop structure to rotate, causing the connecting nut and the inner shell to separate.

[0049] The circumferential direction of the inner shell and the connecting nut is defined as radial, and the direction perpendicular to the radial is defined as axial. Figure 4 As shown, in one embodiment, the axial length of the assembly stop is less than the axial distance between the axial stop and the end cover, and the axial distance between the assembly stop and the end cover is greater than the axial length of the stop structure on the inner wall of the connecting nut. The two gaps on the axial stop are defined as a first gap 5-1 and a second gap 5-2; the axial stop on one side of the first gap is provided with a first assembly stop 7-1 close to the end cover, and the axial stop on one side of the second gap is provided with a second assembly stop 7-2 close to the end cover; at the same time, a first stop structure 9-1 and a second stop structure 9-2 are provided in the connecting nut. As shown Figure 5As shown in (c), when the inner shell and the connecting nut are assembled, the plug-in end of the inner shell is inserted into the tail end of the connecting nut, and the first stop structure 9-1 and the second stop structure 9-2 in the connecting nut are respectively plugged into the first gap and the second gap on the outer circumference of the inner shell, and the first stop structure and the second stop structure in the connecting nut respectively pass through the first gap and the second gap and squeeze the spring toward the end cover of the inner shell. During the continued plug-in process, the first stop structure and the second stop structure squeeze the spring and gradually approach the end cover. At this time, the connecting nut is rotated clockwise or counterclockwise (clockwise rotation or counterclockwise rotation mainly depends on which side of the gap the assembly stop is set), and the first stop structure passes through the gap between the first assembly stop and the end cover. At the same time, the second stop structure passes through the gap between the second assembly stop and the end cover. Then the plug-in and rotation operations are stopped, and the first stop structure and the second stop structure in the connecting nut are rebounded by the spring under the action of the spring force to abut against the axial stop, thereby realizing the assembly between the inner shell and the connecting nut. When the two need to be disassembled, the connecting nut can be continued to be rotated in the direction of rotation during assembly. Under the action of the spring force, the first stop structure and the second stop structure are respectively disengaged from the second gap and the first gap, thereby realizing the disassembly of the inner shell and the connecting nut.

[0050] On the basis of the above embodiment, a limiting groove 10 is further provided on the outer circumference of the plug-in end of the inner shell, and a transition structure 11 is further provided at the plug-in end of the inner shell, through which the outer diameter d of the plug-in end of the inner shell is smaller than the outer diameter D of the non-plug-in end of the inner shell. The diameter-reducing structure of the inner wall at the front end of the connecting nut makes the inner diameter N of the end where the connecting nut and the connector are plugged in larger than the inner diameter n inside the connecting nut. Through the transition structure on the inner shell and the diameter-reducing structure inside the connecting nut, the distance between the inner shell and the connecting nut at the plug-in end of the dust cover is larger than the distance between the inner shell and the connecting nut inside the dust cover, so that when the dust cover and the connector are plugged in, the locking piece 12 on the connector can be smoothly inserted between the inner shell and the connecting nut. At the same time, the radial dimension of the connector locking piece is larger than the distance between the inner shell and the connecting nut inside the dust cover, and finally the connector locking piece is stuck in the limiting groove on the outer circumference of the inner shell and is pressed by the connecting nut, so as to realize the locking between the dust cover and the connector plug-in, such as Figure 6 To unlock, pull the coupling nut away from the connector plug ( Figure 6 Pull the connecting nut to the right as shown), and the connecting nut compresses the spring and moves toward the rear end of the inner shell ( Figure 6 As shown in the figure, it moves to the right), so that the reducing structure of the inner wall of the front end of the connecting nut moves to the connector locking member, thereby increasing the radial spacing at the locking member, and the locking member pops out of the limit groove, which can realize the unlocking between the dust cover and the connector plug-in.

[0051] In one embodiment, the locking member 12 may be a locking ball.

[0052] The above is the structure and assembly method of the inner housing and the connecting nut in one embodiment of the present invention. In another embodiment, in order to avoid excessive rotation of the inner housing and the connecting nut after assembly, causing the stop structure in the connecting nut to come out of the gap on the axial stop platform and cause misunderstanding, as shown in FIG. Figure 7 and Figure 5 As shown in Figure (c), at least two radial stop platforms are further provided on the outer circumference of the inner housing, and the radial stop platforms are located within the spring. The two radial stop platforms are defined as a first radial stop platform 13 and a second radial stop platform 14. The first radial stop platform 13 is located between the first assembly stop platform 7-1 and the second gap 5-2, and the second radial stop platform 14 is located between the second assembly stop platform 7-2 and the first gap 5-1. A first stop area 15 is formed between the first assembly stop platform 7-1 and the first radial stop platform 13, and a second stop area 16 is formed between the second assembly stop platform 7-2 and the second radial stop platform 14. The circumferential dimension of the inner shell or the connecting nut is defined as the radial width. The radial width of the first stop area (i.e., the radial distance between the first assembly stop 7-1 and the first radial stop 13) is greater than the radial width of the first stop structure 9-1 of the inner wall of the connecting nut, so that the first stop structure 9-1 can fall into the first stop area 15; the radial width of the second stop area (i.e., the radial distance between the second assembly stop 7-2 and the second radial stop 14) is greater than the radial width of the second stop structure 9-2 of the inner wall of the connecting nut, so that the second stop structure 9-2 can fall into the second stop area 16. After the inner shell and the connecting nut are assembled, the first stop structure 9-1 is located in the first stop area 15, and the second stop structure 9-2 is located in the second stop area 16. The first assembly stop 7-1 and the first radial stop 13 prevent the first stop structure 9-1 from escaping from the first gap or the second gap, and the second assembly stop 7-2 and the second radial stop 14 prevent the second stop structure 9-2 from escaping from the first gap or the second gap, thereby achieving the effect of radial stopping.

[0053] Furthermore, the axial lengths of the first radial stop platform 13 and the second radial stop platform 14 are both smaller than the axial distance between the axial stop platform and the end cover, and the axial distance between the first radial stop platform and the end cover is greater than the axial length of the first stop platform structure, as shown in FIG. Figure 6(a) is shown. The axial distance between the second radial stop and the end cover is greater than the axial length of the second stop structure. During disassembly, press the end cover toward the inside of the connecting nut and rotate the connecting nut in the direction of rotation during assembly, so that the first stop structure passes between the first radial stop and the end cover, and at the same time, the second stop structure passes between the second radial stop and the end cover, and continues to rotate. Under the action of the spring force, the first stop structure and the second stop structure respectively disengage from the second gap and the first gap, thereby achieving the disassembly of the inner shell and the connecting nut. The connecting nut can also be rotated in the opposite direction of rotation to that during assembly, so that the first stop structure passes between the first assembly stop and the end cover, and at the same time, the second stop structure passes between the second assembly stop and the end cover, and continues to rotate. Under the action of the spring force, the first stop structure and the second stop structure respectively disengage from the first gap and the second gap, thereby achieving the disassembly of the inner shell and the connecting nut.

[0054] In the above embodiment, the axial direction of the assembly stop is perpendicular to the circumference of the axial stop. Figure 4 As shown in (a), in other embodiments, there is a certain angle between the axial direction of the assembly stop and the circumference of the axial stop. However, the assembly stop has an axial component and can still play a stopping role, such as Figure 4 (b) shown.

[0055] In other embodiments, the axial lengths of the first assembly stop and the second assembly stop may be equal to the axial distance between the axial stop and the end cover, such as Figure 8 As shown in (a), the first assembly stop is provided with a first bevel 17 or a rounded feature on the side close to the first gap, the second assembly stop is provided with a first bevel or a rounded feature on the side close to the second gap, and the first stop structure and the second stop structure connected to the inner wall of the nut are provided with a second bevel 18 or a rounded feature on the side close to the corresponding assembly stop, as shown in FIG. Figure 7 As shown, after the stop structure passes through the corresponding gap, it mates with the corresponding assembly stop through an inclined surface or rounded corner feature. The first and second inclined surfaces guide the stop structure to squeeze the corresponding assembly stop, creating an interference fit. Ultimately, under the action of torque, the stop structure squeezes the corresponding assembly stop and eventually enters the corresponding stop area. During disassembly, the connecting nut is rotated in the same direction as during assembly, and the first stop structure is released from the second gap, and the second stop structure is released from the first gap.

[0056] On the basis of the above embodiment, an axial stop platform can also be provided on the inner side of the end cover, such as Figure 8(a) is shown. The axial stop platform close to the plug-in end of the inner shell is defined as the first axial stop platform 4-1, and the axial stop platform close to the end cover is defined as the second axial stop platform 4-2. The outer diameter of the first axial stop platform is larger than the outer diameter of the spring, and the outer diameter of the second axial stop platform is smaller than the inner diameter of the spring. The spring is installed between the first axial stop platform and the end cover, and the second axial stop platform is sleeved inside the spring. When the inner shell and the connecting nut are plugged into each other, the stop platform structure on the inner wall of the connecting nut passes through the corresponding gap. During the further plug-in process, the stop platform structure presses against the second axial stop platform. At this time, the connecting nut is rotated to screw the stop platform structure into the corresponding stop area. After loosening the connecting nut, the stop platform structure is pushed to abut against the first axial stop platform under the action of the spring force. This solution can avoid the defects of the spring coil being stuck due to excessive plug-in force, and the product having a bad feel due to excessive plug-in force. By adding a second axial stop between the first axial stop and the end cap, near the end cap, during the insertion of the inner housing and the connecting nut, the stop structure compresses the spring to a certain extent before pressing against the second axial stop, thereby preventing excessive spring compression and the resulting spring coiling. Of course, in this embodiment, the axial spacing between the assembly stop and the second axial stop is greater than the axial length of the stop structure, allowing the stop structure to smoothly pass through the gap between the assembly stop and the second axial stop into the corresponding stop area.

[0057] Alternatively, the axial length of the assembly stop is equal to the axial length between the first axial stop and the second axial stop. The stop structure on the inner wall of the connecting nut has a first inclined surface, and the assembly stop has a second inclined surface. The stop structure and the corresponding assembly stop cooperate with each other through the first and second inclined surfaces to guide the interference fit into the corresponding stop area. When disassembling, the connecting nut is rotated, the first stop structure disengages from the second gap, and the second stop structure disengages from the first gap.

[0058] In the above embodiments, the inner housing and the connecting nut can be disassembled again after being assembled.

[0059] In other embodiments, when the inner housing and the connecting nut do not need to be disassembled after assembly, if there is only one first axial stop, the axial lengths of the first and second assembly stops are equal to the axial distance between the first axial stop and the end cap, and the axial lengths of the first and second radial stops are equal to the axial distance between the first axial stop and the end cap. Furthermore, the assembly stop has a first bevel 17 or a rounded feature on the side adjacent to the corresponding gap, and the stop structure on the inner wall of the connecting nut has a second bevel 18 or a rounded feature on the side adjacent to the corresponding assembly stop. After the stop structure passes through the corresponding gap, the first and second bevels create an interference fit with the corresponding assembly stop, guiding the assembly into the corresponding stop area.

[0060] When the inner shell and the connecting nut do not need to be disassembled after assembly, if there are two axial stops, namely the first axial stop and the second axial stop, the axial length of the first assembly stop is equal to the axial distance between the first axial stop and the second axial stop, and the axial length of the first radial stop is equal to the axial distance between the first axial stop and the second axial stop. The stop structure passes through the corresponding gap and rests on the second axial stop. The connecting nut is rotated, and the stop structure and the corresponding assembly stop are guided by the interference fit of the first bevel and the second bevel. Under the action of the torque force, the stop structure finally enters the corresponding stop area. By setting the second axial stop, it is possible to avoid the spring coil being stuck due to excessive insertion force, and the defect of poor product feel due to excessive insertion force.

[0061] The present invention is not limited to the above-mentioned two stop structures, two gaps, two assembly stops and two radial stop platforms. In other embodiments, there can also be three stop structures, three gaps, three assembly stops and three radial stop platforms. In short, the number of stop structures, gaps, assembly stops and radial stop platforms is equal, and multiple stop structures are evenly distributed along the same circumference of the inner wall of the connecting nut, and multiple gaps are evenly distributed along the circumference where the first axial stop platform is located. The assembly stop is arranged on one side of the gap, and the radial stop is arranged on one side of the corresponding assembly stop, and a stop area is formed between the radial stop and the corresponding assembly stop.

[0062] The above description is merely an embodiment of the present invention and does not constitute any form of limitation to the present invention. The present invention may also have other forms of embodiments based on the above structures and functions, which are not listed here one by one. Therefore, any simple modification, equivalent changes, and modifications made to the above embodiments by any person skilled in the art in accordance with the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A push-pull locking dust cover, characterized in that:

4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. When the inner shell and the connecting nut are assembled, the plug-in end of the inner shell is inserted into the tail end of the connecting nut, and the stop structure in the connecting nut passes through the corresponding gap and is stopped by the second axial stop platform. The connecting nut rotates relative to the inner shell and squeezes the spring. The stop structure abuts against the first axial stop platform under the action of the spring force to realize the assembly between the inner shell and the connecting nut; after the assembly of the connecting nut and the inner shell is completed, the assembly stop is located between the gap and the stop structure to prevent accidental touch from causing the stop structure to rotate, causing the connecting nut and the inner shell to separate.

2. The push-pull locking dust cover according to claim 1, characterized in that: A radial stop platform is also provided on the side of the first axial stop platform close to the end cover, and the radial stop platform is located in the spring, and a stop area is formed between the radial stop platform and the assembly stop platform; after the inner shell and the connecting nut are assembled, the stop platform structure is located in the stop area, and the radial stop platform and the corresponding assembly stop platform are used to achieve radial limitation of the stop platform structure, so as to prevent the connecting nut from excessively rotating and causing the stop platform structure to fall out of the gap, resulting in separation of the connecting nut from the inner shell.

3. The push-pull locking dust cover according to claim 2, characterized in that: The axial length of the radial stop platform is less than the axial distance between the first axial stop platform and the second axial stop platform, and the axial distance between the radial stop platform and the second axial stop platform is greater than the axial length of the stop platform structure; or, The axial length of the radial stop stage is equal to the axial distance between the first axial stop stage and the second axial stop stage.

4. The push-pull locking dust cover according to claim 2, wherein: The assembly stop is provided with a bevel or rounded feature on one side close to the gap, and the stop structure is provided with a bevel or rounded feature on one side close to the corresponding assembly stop. The stop structure and the corresponding assembly stop are matched through the bevel or rounded features. Under the action of torque force, the stop structure can squeeze the corresponding assembly stop and enter the corresponding stop area to achieve abutment with the first axial stop.

5. The push-pull locking dust cover according to any one of claims 1 to 4, characterized in that: The axial direction of the assembly stop is perpendicular to or has a certain angle with the circumference of the first axial stop.

6. The push-pull locking dust cover according to claim 1, characterized in that The axial length of the assembly stop is less than the axial distance between the first axial stop and the second axial stop, and the axial distance between the assembly stop and the second axial stop is greater than the axial length of the stop structure; or, The axial length of the assembly stop is equal to the axial distance between the first axial stop and the second axial stop.

7. The push-pull locking dust cover according to claim 1, characterized in that A limiting groove is also provided on the outer circumference of the plug-in end of the inner shell, and a transition structure is also provided at the plug-in end of the inner shell. Through the transition structure and the variable diameter structure in the connecting nut, the distance between the inner shell and the connecting nut at the plug-in end of the dust cover is greater than the distance between the inner shell and the connecting nut inside the dust cover. When the dust cover and the connector plug-in are plugged in, the locking piece on the connector is inserted between the inner shell and the connecting nut and finally enters the limiting groove and is tightened by the connecting nut, thereby realizing the locking between the dust cover and the connector plug-in.

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