CN104314946A - Elastic check ring and connector using elastic check ring - Google Patents

Abstract

The invention relates to a circlip and a connector using the circlip. The circlip includes a body whose axis of the ring structure extends along the front and rear directions. There are a plurality of grooves, and the body part between adjacent grooves forms an elastic claw whose claw end can be elastically deformed when the force is applied in the front and rear directions. In the present invention, the body of the elastic retaining ring is a whole ring structure without opening, and the body part between adjacent grooves forms elastic claws, and the elastic retaining ring can be installed in the retaining ring installation groove through the elastic deformation of the claw ends of the elastic claws. The elastic retaining ring is a full ring structure, so the elastic retaining ring is evenly stressed when bearing the axial force, and the overall force is realized, and the deformation of the elastic retaining ring without an open structure will not be too large and difficult to come out of the retaining ring installation groove .

Description

Elastic retaining ring and connector using the elastic retaining ring

technical field

The invention relates to an elastic circlip used for axially limiting components and a connector using the elastic circlip.

Background technique

In many fields of production and life, circlips are used to axially limit parts. For example, in the field of connectors, the connector includes a connector housing and a dust cover. The connector housing is provided with external threads. The connecting nut is used to screw with the external thread on the connector housing. The dust cover housing is provided with an axial limit structure that restricts the axial movement of the connecting nut relative to the dust cover shell. The axial limit The structure includes a limit step and an elastic retaining ring. The axial movement of the connecting nut relative to the dust cover shell is limited by the limit step and the elastic retaining ring on both sides of the connecting nut in the axial direction. The limit step and the dustproof The cover housing is integrated, and the elastic circlip is a later assembly part. The performance of the elastic circlip plays a vital role in the axial limit of the connecting nut. Existing circlips, such as a circlip disclosed in Chinese patent CN102720743A, include a C-shaped structure of the circlip body, and the C-shaped structure of the circlip body has expansion and contraction characteristics. When in use, the circlip body is directly installed on the dustproof In the retaining ring installation groove on the cover housing, the outer edge of the retaining ring body is axially limited in cooperation with the connecting nut. The problems existing in this kind of circlip are: 1. The circlip realizes elastic expansion and contraction through the opening structure of the incomplete ring, and the stability of the circlip after assembly is not good. Due to the existence of the opening structure, the circlip The ring body is easy to come out of the retaining ring installation groove when it is subjected to axial force; 2. The existence of the opening structure also makes the elastic retaining ring must be made of metal materials. When the components are used outdoors, due to many environmental factors, especially In the outdoor environment where the salt spray resistance of the parts is relatively high, the surface of the retaining ring must be treated with corrosion resistance, which will greatly increase the production cost of the retaining ring.

Contents of the invention

The object of the present invention is to provide a circlip that is not easy to come out of the mounting groove of the circlip; the object of the present invention is also to provide a connector using the circlip.

In order to solve the above problems, the technical solution of the connector in the present invention is:

A circlip, comprising a body whose axis of the entire annular structure extends along the front-to-rear direction, a plurality of grooves are spaced around the circumference on the inner peripheral surface or the outer peripheral surface of the body, and the body parts between adjacent grooves form a front-to-back A claw whose claw end is elastically deformable when a force is applied in a direction.

The body is made of plastic.

The plastic is nylon or PEI material.

The shape of the groove is arc-shaped.

The front and rear sides of the claw are respectively provided with chamfered structures and sharp edge structures.

The technical scheme of the connector in the present invention is:

The connector includes a housing provided with a retaining ring installation groove, an elastic retaining ring is arranged in the retaining ring installation groove, the elastic retaining ring includes a body whose axis of the entire ring structure extends along the front and rear directions, and the inner or outer peripheral surface of the body A plurality of grooves are arranged at intervals around the circumference, and the body part between adjacent grooves forms an elastic claw whose claw end can be elastically deformed when force is applied in the front and rear directions.

The body is made of plastic.

The plastic is nylon or PEI material.

The shape of the groove is arc-shaped.

The front and rear sides of the claw are respectively provided with chamfered structures and sharp edge structures.

The beneficial effects of the present invention are: the body of the elastic retaining ring in the present invention is a full ring structure without openings, the body part between adjacent grooves forms elastic claws, and the elastic retaining ring can be installed on the elastic deformation of the claw ends of the elastic claws. In the installation groove of the retaining ring, since the retaining ring is a full ring structure, the force on the retaining ring is uniform when bearing the axial force, and the overall force is realized, and the deformation of the retaining ring without the opening structure will not be too large and difficult Comes out of the retaining ring mounting groove.

Further, the body of the whole annular structure ensures the strength of the elastic retaining ring, so the body can be made of plastic, which reduces the weight of the product on the one hand, and on the other hand can achieve corrosion resistance at low cost.

Description of drawings

Fig. 1 is a structural schematic diagram of a dustproof cover in a connector embodiment of the present invention;

Fig. 2 is a schematic structural view of the circlip in Fig. 1;

Fig. 3 is the A-A direction sectional view of Fig. 2;

FIG. 4 is a perspective view of FIG. 2 . the

Detailed ways

The embodiment of the connector is shown in Figure 1: the connector includes a socket and a dust cover with a dust cover housing 3, and the dust cover housing is rotatably equipped with a connecting nut 1 whose rotation axis extends in the front and rear directions, and the dust cover housing is rotatable. Limiting steps 2 and retaining ring installation grooves are arranged at intervals on the cover housing. A circlip 4 is arranged in the retaining ring installation groove. The limiting steps cooperate with the retaining ring to limit the axial movement of the connecting nut 1 . The circlip includes a body 8 whose axis of the entire annular structure extends along the front-to-rear direction. The body is made of nylon plastic. The inner peripheral surface of the body 8 is provided with a plurality of grooves 9 at intervals around the circumference. In this embodiment, the grooves The number is eight, the shape of the groove is arc-shaped, and the body part between adjacent grooves forms a claw 10, and the claw end of the claw can be elastically deformed when subjected to the force in the front and rear direction, and the front side of the claw is provided with There is a chamfer structure 7, and a sharp edge structure 5 is provided on the rear side of the claw.

When assembling the dust cover, first set the connecting nut on the dust cover shell, and then install the elastic retaining ring on the dust cover shell from back to front, and then install the elastic retaining ring from the rear to the front During the assembly process, the dust cover shell gives back pressure to the claw end of the spring claw, so the claw end of the spring claw elastically deforms backward, and the claw end of the spring claw is elastically interference fit with the dust cover shell , the spring claws will be pressed by the dust cover shell and deformed backwards. The chamfered structure helps the elastic retaining ring to fit smoothly on the dust cover shell. When the elastic retaining ring moves to the retaining ring installation groove, each spring The claw ends of the claws are reset. At this time, the diameter of the circle surrounded by the claw ends of each elastic claw is smaller than the outer diameter of the dust cover shell, and the elastic retaining ring is firmly limited in the retaining ring installation groove. The rib structure can further ensure that the elastic circlip does not easily come out of the installation groove of the circlip, and the circlip can rotate freely without affecting the relative rotation of the connecting nut and the dust cover. The circlip adopts a closed structure of a complete ring, which can improve the stability of the circlip after assembly, realize the overall force, and overcome the defect that it is easy to fall out when the axial force is applied; the design of the groove and the control of the number can ensure the stability of the structure. At the same time, it can also reduce the difficulty of assembly, improve assembly efficiency and make it suitable for mass production.

In other embodiments of the connector: the socket can also be replaced by a plug, and the plug housing of the plug is rotatably equipped with a connecting nut for screwing with the socket housing, and the elastic retaining ring is arranged on the plug housing to limit the connection. The nut moves axially; of course, the circlip can also be applied to other parts of the plug housing or the socket housing to use on other parts that need to be axially limited. When the circlip is a circlip for a hole, the claw And the groove can be arranged on the outer peripheral surface of the body; the body of the circlip can also be made of other plastic materials or metal materials such as PEI; the shape of the groove can also be rectangular, trapezoidal or other shapes; the number of grooves It can also be set according to needs, such as three, four, five or other numbers; the chamfered structure and sharp edge structure on the bullet claw can also be replaced by a circular arc-shaped edge structure.

Embodiments of the circlip are shown in FIGS. 1-4 : the specific structure of the circlip is the same as that of the circlip described in the connector embodiments above, and will not be described in detail here. In other embodiments of the elastic circlip, the elastic circlip can also be applied in fields other than connectors that require axial positioning of workpieces.

Claims (10)

1. a circlip, it is characterized in that: the body that the axis comprising whole loop configuration extends along the longitudinal direction, the inner peripheral surface of body or outer circumferential face are provided with multiple groove around circumference is spaced apart, and the body portion between adjacent grooves forms the bullet pawl by pawl end elastically deformable during fore-and-aft direction active force.

2. circlip according to claim 1, is characterized in that: described body is made of plastics.

3. circlip according to claim 2, is characterized in that: described plastics are nylon or PEI material.

4. circlip according to claim 1, is characterized in that: the shape of described groove is circular arc.

5. the circlip according to claim 1 ~ 5 any one, is characterized in that: the both sides, front and back of described bullet pawl are respectively arranged with chamfering structure and cusped edge structure.

6. connector, comprise the housing being provided with back-up ring mounting groove, circlip is provided with in back-up ring mounting groove, it is characterized in that: the body that the axis that circlip comprises whole loop configuration extends along the longitudinal direction, the inner peripheral surface of body or outer circumferential face are provided with multiple groove around circumference is spaced apart, and the body portion between adjacent grooves forms the bullet pawl by pawl end elastically deformable during fore-and-aft direction active force.

7. connector according to claim 6, is characterized in that: described body is made of plastics.

8. connector according to claim 7, is characterized in that: described plastics are nylon or PEI material.

9. connector according to claim 6, is characterized in that: the shape of described groove is circular arc.

10. the connector according to claim 6 ~ 9 any one, is characterized in that: the both sides, front and back of described bullet pawl are respectively arranged with chamfering structure and cusped edge structure.