CN114852008A - Dustproof coiler - Google Patents

Abstract

The application discloses dustproof coiler includes: the device comprises a main body bracket, a mandrel, a dustproof part and a positioning structure; the two opposite side walls of the main body bracket are provided with accommodating through holes, and the end part of the mandrel is limited in the accommodating through holes; the dustproof parts are arranged on two side walls of the main body support, cover the accommodating through holes and are provided with packaging structures matched with the end parts of the mandrels, and the packaging structures are buckled on the end parts of the mandrels; the positioning structure is arranged between the dustproof part and the main body support around the accommodating through hole and used for positioning the packaging structure on two side walls of the support main body and forming a mandrel rotating gap between the packaging structure and the end part of the mandrel. This application covers the holding through-hole through the dustproof part that sets up, and has played dustproof effect under the pivoted prerequisite that does not influence the dabber. In addition, the dustproof part of this embodiment simple structure realizes the installation under not influencing the original space of coiler to the space utilization of coiler has been improved.

Description

Dustproof coiler

Technical Field

The application relates to the technical field of automobile equipment, in particular to a dustproof retractor.

Background

Retractors are important automotive safety devices that function in conjunction with safety webbing to secure personnel in the seat during a crash to reduce the likelihood of injury or death.

A typical retractor generally includes a main body bracket, a spindle, a locking assembly, and a coil spring assembly, but the connection between the respective components is complicated, so that there is a certain gap between the respective components after the connection, and such a gap may allow foreign materials such as dust to enter the retractor. Particularly, in some environments with more dust, such as mountainous cross country and sandy beach, the whole environment has more sand and dust, and the sand and dust can easily enter the interior of the retractor, so that the normal use of the retractor is influenced.

Therefore, how to improve the dustproof effect of the retractor becomes a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The embodiment of the application provides a dustproof coiler to solve the problem of how to promote the dustproof effect of coiler among the prior art.

The embodiment of the application provides a dustproof coiler, includes: the device comprises a main body support and a mandrel, wherein accommodating through holes are formed in two opposite side walls of the main body support, and the end part of the mandrel is limited in the accommodating through holes; it is characterized by comprising: a dust-proof component and a positioning structure;

the dustproof parts are arranged on two side walls of the main body support, cover the accommodating through hole and are provided with packaging structures matched with the end parts of the mandrels, and the packaging structures are buckled on the end parts of the mandrels;

the positioning structure is arranged between the dustproof component and the main body support in a surrounding mode of the containing through hole and used for positioning the packaging structure on two side walls of the support body and enabling a mandrel rotating gap to be formed between the packaging structure and the end portion of the mandrel.

Optionally, the end portions of the mandrel are the end portions of the mandrel located on the inner surfaces of the two side walls of the main body support, and the dustproof components are arranged on the inner surfaces of the two side walls of the main body support;

the main part of dustproof part is the flat cyclic annular, packaging structure sets up in being close to the ring center and encircles the ring center position, and for dustproof part's main part is in be protruding form on the circumferential direction of dabber, protruding form be with the tip assorted structure of dabber.

Optionally, the end portions of the mandrel, which are located on the inner surfaces of the two side walls of the main body support, are in a positive step structure, and the protrusions matched with the end portions of the mandrel are in a negative step structure.

Optionally, the outer end face of the reverse step structure is provided with an inclined slope.

Optionally, the positioning structure includes a first positioning hole, a second positioning hole and a positioning pin;

the first positioning holes are arranged on two side walls of the main body support around the accommodating through hole according to a preset distance, and the preset distance enables the positioning structure to form a mandrel rotating gap between the packaging structure and the end part of the mandrel;

the second positioning hole is opposite to the first positioning hole and is arranged on the main body of the dustproof component;

the positioning pin penetrates through the first positioning hole and the second positioning hole so as to position the dustproof component on two side walls of the support main body.

Optionally, the main body of the dust-proof component comprises two half-ring bodies with the same structure, and the two half-ring bodies are spliced by the positioning structure to form the main body of the dust-proof component.

Optionally, the method further includes: a dust cover and a securing structure;

the dust cover is provided with a structure matched with the appearance of the main body bracket, and is buckled on the main body bracket;

the fixing structure is arranged between the dust cover and the main body bracket and used for fixedly mounting the dust cover on the main body bracket.

Optionally, the end portion of the mandrel is located on the outer surface of the side wall of the main body support, and the dustproof member is disposed on the outer surface of the two side walls of the main body support;

the main part of dustproof part is the flat cyclic annular, packaging structure sets up in being close to the ring center and encircles the ring center position, and relative in the radial direction of dabber dustproof part's main part is protruding form, packaging structure with it makes dabber pivoted running clearance to have between the circumference terminal surface of the tip of dabber.

Optionally, the method further includes: the spring coiling assembly comprises a spring coiling cover and a spring coiling seat, wherein the spring coiling cover and the spring coiling seat are assembled in an inverted buckling mode, and an inclined plane is arranged at the buckling position.

Optionally, the method further includes: a locking assembly comprising a locking base plate and a locking cover;

the middle boss of the locking bottom plate is matched with the outer ring surface of the end part of the mandrel to form a clearance surface;

the locking lug boss of the locking bottom plate and the groove of the locking cover are assembled in an embedded mode, and the edge of the locking bottom plate and the locking cover are assembled in a sealing mode.

Compared with the prior art, the method has the following advantages:

the embodiment of the application provides a dustproof coiler, includes: the device comprises a main body bracket, a mandrel, a dustproof part and a positioning structure; the two opposite side walls of the main body bracket are provided with accommodating through holes, and the end part of the mandrel is limited in the accommodating through holes; the dustproof parts are arranged on two side walls of the main body support, cover the accommodating through hole and are provided with packaging structures matched with the end parts of the mandrels, and the packaging structures are buckled on the end parts of the mandrels; the positioning structure is arranged between the dustproof component and the main body support in a surrounding mode of the containing through hole and used for positioning the packaging structure on two side walls of the support body and enabling a mandrel rotating gap to be formed between the packaging structure and the end portion of the mandrel. This application embodiment covers the holding through-hole through the dustproof part that sets up, and has played dustproof effect under the pivoted prerequisite that does not influence the dabber. In addition, the dustproof part of this embodiment simple structure realizes the installation under not influencing the original space of coiler to the space utilization of coiler has been improved.

Drawings

Fig. 1 is a schematic structural diagram of a dustproof retractor provided in an embodiment of the present application.

Fig. 2 is an exploded view of the dustproof retractor provided in the embodiment of the present application.

Fig. 3 is an assembly diagram of a main body bracket and a dust-proof component according to an embodiment of the present application.

Fig. 4 is an assembly schematic view of the dustproof member provided by the embodiment of the present application assembled to the mandrel and the body bracket.

Fig. 5 is an enlarged view at a in fig. 2.

Fig. 6 is a schematic structural diagram of a dust-proof component provided in an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a dust cover provided in an embodiment of the present application.

Reference numerals: the dustproof retractor 100 comprises a main body support 1, an accommodating through hole 11, a side wall 12, a mandrel 2, an end portion 21, a dustproof component 3, a main body 31, an encapsulation structure 32, a positioning structure 4, a first positioning hole 41, a positioning pin 42, a dustproof cover 5, a fixing structure 6, a rising pin 61, a shaft pin 62, a first pin hole 63, a second pin hole 64, a coil spring assembly 7, a coil yellow cover 71, a coil spring seat 72, a locking assembly 8, a locking bottom plate 81, a locking cover 82, a ratchet assembly 83 and a vehicle sensing assembly 84.

Detailed Description

In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments of the present application. The embodiments of this application are capable of embodiments in many different forms than those described herein and can be similarly generalized by those skilled in the art without departing from the spirit and scope of the embodiments of this application and, therefore, the embodiments of this application are not limited to the specific embodiments disclosed below.

The embodiment of the application provides a dustproof retractor, and figure 1 is a structural schematic diagram of the dustproof retractor provided by the embodiment of the application. Fig. 2 is an exploded view of the dustproof retractor provided in the embodiment of the present application. Fig. 3 is an assembly diagram of a main body bracket and a dust-proof component according to an embodiment of the present application. Fig. 4 is an assembly schematic view of the dustproof member provided by the embodiment of the present application assembled to the mandrel and the body bracket. Fig. 5 is an enlarged view at a in fig. 2. Fig. 6 is a schematic structural diagram of a dust-proof component provided in an embodiment of the present application. Fig. 7 is a schematic structural diagram of a dust cover provided in an embodiment of the present application.

The embodiment of the present application provides a dustproof retractor 100, include: main part support 1, dabber 2, dustproof part 3 and location structure 4. Wherein the main body bracket 1 is the supporting main body 31 of the whole dustproof retractor 100, and other parts of the dustproof retractor 100 are assembled through the main body bracket 1 to form the complete dustproof retractor 100. For example, other components include a locking assembly 8 and a coil spring assembly 7, as shown in fig. 1 and 2, the main body support 1 is a frame structure as a whole in the transverse direction, the main body support 1 has two opposite side walls 12, and a receiving through hole 11 for defining an end portion 21 of the mandrel 2 is provided on the two opposite side walls 12, the mandrel 2 is located in the inner space of the main body support 1, and the end portion 21 of the mandrel 2 is defined in the receiving through hole 11. The locking assembly 8 is located on the side wall 12 of the right side of the main body support 1, and the coil spring assembly 7 is located on the side wall 12 of the left side of the main body support 1. Wherein, locking subassembly 8 includes locking bottom plate 81, ratchet subassembly 83, car feel subassembly 84 and locking lid 82, is conventional part based on each part in locking subassembly 8, and the specific connected mode of each part will not be described here again. The wrap spring assembly 7 includes a wrap spring cover, a wrap spring, and a wrap spring seat 72. Based on the fact that each component in the coil spring assembly 7 is a conventional component, the specific connection mode of each component will not be described in detail here.

In the embodiment of the present application, after the end portion 21 of the spindle 2 is assembled in the receiving through hole 11, in order to maintain the rotation of the end portion 21 of the spindle 2, a sealing state is not formed between the end portion 21 of the spindle 2 and the receiving through hole 11, that is, a gap is formed between the end portion 21 of the spindle 2 and the receiving through hole 11, so that some fine impurities such as dust, liquid, etc. can enter the locking assembly 8 on the right side wall 12 and the coil spring assembly 7 on the left side wall 12 through the gap, and the normal use and the service life of the dustproof retractor 100 are affected. In order to avoid this, as shown in fig. 1 to 7, the present embodiment is provided with a dust-proof component 3, the dust-proof component 3 is disposed on two side walls 12 of the main body bracket 1, the dust-proof component 3 covers the receiving through hole 11, and has a packaging structure 32 matching with the end portion 21 of the mandrel 2, and the packaging structure 32 is fastened to the end portion 21 of the mandrel 2. Specifically, the end portions 21 of the mandrel 2 may be the end portions 21 of the mandrel 2 located on the inner surfaces of the two side walls 12 of the main body support 1, correspondingly, the dustproof member 3 is arranged on the inner surfaces of the two side walls 12 of the main body support 1, the dustproof member 3 has a packaging structure 32 matched with the end portions 21 of the mandrel 2 arranged on the inner surfaces of the two side walls 12 of the main body support 1, and the packaging structure 32 is fastened to the end portions 21 of the mandrel 2 located on the inner surfaces of the two side walls 12 of the main body support 1. Of course, the end portions 21 of the core shaft 2 may be the end portions 21 of the core shaft 2 located on the outer surfaces of the two side walls 12 of the main body support 1, and correspondingly, the dustproof member 3 may also be disposed on the outer surfaces of the two side walls 12 of the main body support 1, the dustproof member 3 has a packaging structure 32 matched with the end portions 21 of the core shaft 2 disposed on the outer surfaces of the two side walls 12 of the main body support 1, and the packaging structure 32 is fastened to the end portions 21 of the core shaft 2 located on the outer surfaces of the two side walls 12 of the main body support 1. The specific structure of the dust-proof members 3 located on the inner and outer surfaces of the side walls 12 of the body frame 1 will be described below.

Specifically, the end portions 21 of the mandrel 2 are the end portions 21 of the mandrel 2 located on the inner surfaces of the two side walls 12 of the main body frame 1, the end portions 21 of the mandrel 2 at both ends have the same structure, the dust-proof members 3 are provided on the inner surfaces of the two side walls 12 of the main body frame 1, and the dust-proof members 3 located on the end portions 21 of the mandrel 2 at both ends have the same structure. The main body 31 of the dust-proof component 3 is in a flat ring shape, and the encapsulation structure 32 is disposed near and around the ring center and is convex relative to the main body 31 of the dust-proof component 3 in the circumferential direction of the mandrel 2. The body 31 of the dust-proof part 3 is arranged in a flat ring shape in order to reduce the occupation of the inner space of the body support 1, and in order to have a central opening which can be sleeved with the end 21 of the mandrel 2, i.e. the dust-proof part 3 is sleeved on the end 21 of the mandrel 2. The package structure 32 is located near and around the center of the ring, and is convex relative to the main body 31 of the dust-proof component 3, and the convex is a structure matching with the end 21 of the mandrel 2. And the height of the projection is slightly higher than the thickness of the end portion 21 of the core shaft 2 in order to enclose the end portion 21 of the core shaft 2 while reducing the occupation of the inner space of the body support 1 as much as possible. Further, the end portions 21 of the core shaft 2 located on the inner surfaces of the two side walls 12 of the main body support 1 are in a positive step structure, and the convex shape matched with the end portion 21 of the core shaft 2 is set to be in a negative step structure. In addition, the outer end face of the reverse step structure is set to be an inclined slope, and impurities such as dust falling on the outer end face of the reverse step structure can be separated from the outer end face of the reverse step structure by setting the outer end face of the reverse step structure to be the inclined slope.

After the dustproof member 3 is sleeved on the end portion 21 of the mandrel 2, in order to not affect the normal rotation of the end portion 21 of the mandrel 2, the dustproof member 3 needs to be sleeved on the specified position of the end portion 21 of the mandrel 2, and therefore, the dustproof member 3 is sleeved on the specified position of the end portion 21 of the mandrel 2 through the arranged positioning structure 4 in the embodiment of the application. Specifically, the positioning structure 4 is disposed between the dust-proof component 3 and the main body bracket 1 around the receiving through hole 11, and is used for positioning the encapsulating structure 32 on the two side walls 12 of the bracket main body 31 and forming a rotation gap of the mandrel 2 between the encapsulating structure 32 and the end portion 21 of the mandrel 2.

Further, in the present embodiment, the positioning structure 4 includes a first positioning hole 41, a second positioning hole, and a positioning pin 42. The first positioning holes 41 are arranged on the two side walls 12 of the main body support 1 around the receiving through hole 11 according to a predetermined distance, which is determined after calculation and measurement, so that the positioning structures 4 form a rotating clearance of the mandrel 2 between the packaging structure 32 and the end portion 21 of the mandrel 2. The second positioning hole is provided in the main body 31 of the dust-proof member 3 so as to oppose the first positioning hole 41, and the positioning pin 42 penetrates through the first positioning hole 41 and the second positioning hole to position the dust-proof member 3 on the inner surfaces of the both side walls 12 of the holder main body 31. Wherein, location structure 4 encircles 11 intervals of holding through-hole and sets up, and location structure 4 sets up to at least two, and location structure 4 of this embodiment is 90 degrees settings with adjacent interval angle, and the quantity of location structure 4 sets up to four.

In this embodiment, in order to facilitate sleeving the dust-proof component 3 on the end 21 of the mandrel 2, the dust-proof component 3 may be provided as two half-rings having the same structure, that is, the main body 31 of the dust-proof component 3 includes two half-rings having the same structure, and the two half-rings are spliced by the positioning structure 4 to form the main body 31 of the dust-proof component 3. Specifically, when the dustproof member 3 is provided as two half-rings having the same structure, one of the half-rings may be first sleeved on the half-circumference wall of the end portion 21 of the mandrel 2, and the half-ring may be positioned between the packaging structure 32 and the end portion 21 of the mandrel 2 by the positioning structure 4 according to a predetermined distance. Then, another half ring body is sleeved on the other half peripheral wall of the end portion 21 of the mandrel 2, and the half ring body is positioned between the packaging structure 32 and the end portion 21 of the mandrel 2 according to a preset distance through the positioning structure 4. After the two half-rings are combined, a convex packaging structure 32 can be formed.

The above is a specific structure in which the dust-proof members 3 are located on the inner surfaces of the both side walls 12 of the main body frame 1, and a specific structure (not shown) in which the dust-proof members 3 are located on the outer surfaces of the both side walls 12 of the main body frame 1 will be described below. Specifically, tip 21 of dabber 2 is the tip 21 of dabber 2 that is located the surface of main part support 1's lateral wall 12, the tip 21 at the both ends of dabber 2 is inequality structure, dustproof part 3 sets up the surface at main part support 1's both sides wall 12, cover in holding through-hole 11, dustproof part 3's main part 31 is the annular of flat ring, packaging structure 32 sets up and is close to the ring center and encircle the ring center position, and be protruding form in dabber 2's radial direction relative to dustproof part 3's main part 31, it makes dabber 2 pivoted running clearance to have between packaging structure 32 and the circumference terminal surface of dabber 2's tip 21, the size of this clearance is that the clearance value is minimum under the prerequisite that does not influence dabber 2 pivoted, can effectively prevent that the dust from entering into the mechanism of the both sides of main part support 1 from the clearance like this. The body 31 of the dust-proof part 3 is arranged in a flat ring shape in order to reduce the space occupied by the internal space of the mechanism on both sides of the body support 1, and in order to have a central opening which can be fitted over the end 21 of the mandrel 2, i.e. the dust-proof part 3 is fitted over the end 21 of the mandrel 2.

After the dustproof member 3 is sleeved on the end portion 21 of the mandrel 2, in order to not affect the normal rotation of the end portion 21 of the mandrel 2, the dustproof member 3 needs to be sleeved on the specified position of the end portion 21 of the mandrel 2, and therefore, the dustproof member 3 is sleeved on the specified position of the end portion 21 of the mandrel 2 through the arranged positioning structure 4 in the embodiment of the application. Specifically, the positioning structure 4 is disposed between the dust-proof component 3 and the main body bracket 1 around the receiving through hole 11, and is used for positioning the encapsulating structure 32 on the two side walls 12 of the bracket main body 31 and forming a rotation gap of the mandrel 2 between the encapsulating structure 32 and the end portion 21 of the mandrel 2. The specific structure of the positioning structure 4 can be referred to above, and will not be repeated herein.

In addition, in order to further prevent impurities such as dust from entering the coil spring assembly 7, the present embodiment inversely assembles the cover 71 and the seat 72, and an inclined slope is provided at the joint, so that the impurities such as dust can be effectively prevented from entering the coil spring assembly. Similarly, in order to further prevent impurities such as dust from entering into the locking assembly 8, in the embodiment of the present application, the middle boss of the locking base plate 81 is engaged with the outer ring surface of the end portion 21 of the mandrel 2 to form a clearance surface, and the locking boss of the locking base plate 81 and the groove of the locking cover 82 are fitted in an embedded manner, and the edges of the locking cover 82 and the locking base plate 81 are fitted in a closed manner, so that impurities such as dust can be effectively prevented from entering into the locking assembly 8. Particularly in some environments with a large amount of dust, the dust can be prevented from entering the dust-proof retractor 100.

In addition, in the embodiment of the present application, in order to further prevent impurities such as dust from entering into the inner space of the main body bracket 1, a dust cover 5 and a fixing structure 6 are further provided. Wherein, dust cover 5 has the structure with the appearance assorted of main part support 1, and dust cover 5 lock is adorned in main part support 1. The fixing structure 6 is arranged between the dust cover 5 and the main body support 1 and is used for fixedly packaging the dust cover 5 on the main body support 1. The dust cover 5 is of a U-shaped structure as a whole, the fixing structures 6 are respectively arranged at the edge positions of the U-shaped structure, and as shown in fig. 7, the fixing structures 6 are arranged at the front end and the rear end of the U-shaped structure. The fixing structure 6 comprises an expansion pin 61, a shaft pin 62, a first pin hole 63 and a second pin hole 64, the expansion pin 61 is arranged at the front end of the dust cover 5, and the first pin hole 63 is opposite to the expansion pin 61 and is arranged on the bottom wall of the main body bracket 1. An axle pin 62 is provided at the rear end of the dust cover 5, and in particular on the inner surface of the rear end of the dust cover 5, and a second pin hole 64 is provided on the main body bracket 1 opposite to the axle pin 62. The expanding pin 61 is inserted into the first pin hole 63 in the vertical direction, and the shaft pin 62 is inserted into the second pin hole 64 in the horizontal direction, thereby fixing the dust cover 5 to the main body bracket 1.

The embodiment of the present application provides a dustproof retractor 100, includes: the device comprises a main body bracket 1, a mandrel 2, a dustproof part 3 and a positioning structure 4; two opposite side walls 12 of the main body bracket 1 are provided with accommodating through holes 11, and an end portion 21 of the mandrel 2 is limited in the accommodating through hole 11; the dustproof parts 3 are arranged on two side walls 12 of the main body support 1, the dustproof parts 3 cover the accommodating through holes 11 and are provided with packaging structures 32 matched with the end portions 21 of the core shafts 2, and the packaging structures 32 are buckled on the end portions 21 of the core shafts 2; the positioning structure 4 is disposed between the dust-proof component 3 and the main body bracket 1 around the accommodating through hole 11, and is configured to position the encapsulating structure 32 on the two side walls 12 of the bracket main body 31, and to form a rotation gap of the mandrel 2 between the encapsulating structure 32 and the end 21 of the mandrel 2. This application embodiment covers holding through-hole 11 through the dustproof part 3 that sets up, and has played dustproof effect under the pivoted prerequisite that does not influence dabber 2. In addition, the dustproof component 3 of the embodiment has a simple structure, and is installed without influencing the original space of the retractor, so that the space utilization rate of the retractor is improved.

Although the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application, and those skilled in the art can make variations and modifications without departing from the spirit and scope of the present application, therefore, the scope of the present application should be determined by the claims that follow.

Claims (10)

1. A dust retractor, comprising: the device comprises a main body support and a mandrel, wherein accommodating through holes are formed in two opposite side walls of the main body support, and the end part of the mandrel is limited in the accommodating through holes; it is characterized by comprising: a dust-proof component and a positioning structure;

the dustproof parts are arranged on two side walls of the main body support, cover the accommodating through hole and are provided with packaging structures matched with the end parts of the mandrels, and the packaging structures are buckled on the end parts of the mandrels;

the positioning structure is arranged between the dustproof component and the main body support in a surrounding mode of the containing through hole and used for positioning the packaging structure on two side walls of the support body and enabling a mandrel rotating gap to be formed between the packaging structure and the end portion of the mandrel.

2. The dustproof retractor according to claim 1 wherein the ends of the spindle are the ends of the spindle located on the inner surfaces of both side walls of the main body bracket, and the dustproof members are provided on the inner surfaces of both side walls of the main body bracket;

the main part of dustproof part is the flat cyclic annular, packaging structure sets up in being close to the ring center and encircles the ring center position, and for dustproof part's main part is in be protruding form on the circumferential direction of dabber, protruding form be with the tip assorted structure of dabber.

3. The dustproof retractor according to claim 2, wherein the ends of the spindle located on the inner surfaces of the two side walls of the main body bracket have a positive step structure, and the protrusions matching with the ends of the spindle are arranged in a negative step structure.

4. The dustproof retractor according to claim 3, wherein the outer end face constituting the reverse step structure is provided as an inclined slope.

5. The dustproof retractor according to claim 1 wherein the positioning structure comprises a first positioning hole, a second positioning hole and a positioning pin;

the first positioning holes are arranged on two side walls of the main body support around the accommodating through hole according to a preset distance, and the preset distance enables the positioning structure to form a mandrel rotating gap between the packaging structure and the end part of the mandrel;

the second positioning hole is opposite to the first positioning hole and is arranged on the main body of the dustproof component;

the positioning pin penetrates through the first positioning hole and the second positioning hole so as to position the dustproof component on two side walls of the support main body.

6. The dustproof retractor according to any one of claims 2 to 5 wherein the main body of the dustproof member comprises two half-ring bodies having the same structure, and the two half-ring bodies are spliced by the positioning structure to form the main body of the dustproof member.

7. The dustproof retractor according to claim 1, further comprising: a dust cover and a securing structure;

the dust cover is provided with a structure matched with the appearance of the main body bracket, and is buckled on the main body bracket;

the fixing structure is arranged between the dust cover and the main body bracket and used for fixedly mounting the dust cover on the main body bracket.

8. The dustproof retractor according to claim 1, wherein the end portion of the spindle is an end portion of the spindle located on an outer surface of the side wall of the main body bracket, and the dustproof member is provided on outer surfaces of both side walls of the main body bracket;

the main part of dustproof part is the flat cyclic annular, packaging structure sets up in being close to the ring center and encircles the ring center position, and relative in the radial direction of dabber dustproof part's main part is protruding form, packaging structure with it makes dabber pivoted running clearance to have between the circumference terminal surface of the tip of dabber.

9. The dustproof retractor according to claim 1, further comprising: the spring coiling assembly comprises a spring coiling cover and a spring coiling seat, wherein the spring coiling cover and the spring coiling seat are assembled in an inverted buckling mode, and an inclined plane is arranged at the buckling position.

10. The dustproof retractor according to claim 1, further comprising: a locking assembly comprising a locking base and a locking cover;

the middle boss of the locking bottom plate is matched with the outer ring surface of the end part of the mandrel to form a clearance surface;

the locking lug boss of the locking bottom plate and the groove of the locking cover are assembled in an embedded mode, and the edge of the locking bottom plate and the locking cover are assembled in a sealing mode.

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