JP3365232B2 - connector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting a male member, and more particularly, to an insertion having an annular projection at a distance from a tip. The present invention relates to a connector to which a male member having an end can be connected. 2. Description of the Related Art Conventionally, as this kind of connector, a connector described in Japanese Patent Application Laid-Open No. 8-233181 (shown in FIG. 8) is known. That is, a male member 30 having an insertion end 31 having an annular protrusion 31a at a distance from the tip.
And a housing member 10 having a shaft hole 13 penetrating from one end to the other end, and a housing portion 10 having an inwardly extending receiving hole 12 at one end in the axial direction into which the insertion end 32 of the male member 30 can be inserted.
C is fitted on the outer periphery of an annular clip fitting portion 15 formed at one end of the housing portion 10 having a pair of stopper holes 17 which penetrate in the radial direction and are close to one end of the housing portion 10. And a clip 20 having a shape. The clip 20 projects radially inward from the inner peripheral surface of the main body 21 and a pair of inward projections 2 inserted into a pair of stopper holes 17 of the clip fitting portion 15.
2 and 22, the pair of inward projections 22 and 22 include a pair of locking claws 22a and 22a protruding inward in the radial direction from the pair of stopper holes 17 and 17 and a pair of locking claws. 22a, 22a are provided with guide surfaces 23, 23, each having a gradually decreasing diameter inward, and when inserting the insertion end 32 of the male member 30 into the receiving hole 12 of the female member 1, the insertion end 3
The two annular projections 31 abut on the guide surfaces 23, 23 of a fixed width of the pair of locking claws 22a, 22a, and the inward projections 22,
Since the ring 22 can be pushed outward in the radial direction, the annular projection 31 is snap-engaged with the pair of locking claws 22a, 22a to connect the male member 30 and the female member 1. [0004] However, when the spring rigidity of the elastic material of the clip is increased, the holding force of the male member can be increased, but the insertion energy of the male member also increases.
Connection becomes difficult, and it is difficult to balance the holding force of the clip and the insertability of the male member. In view of such a problem, the present inventor can increase the spring rigidity of the elastic material of the clip to increase the holding force of the clip with respect to the male member, and can easily connect the male member to the same degree as in the prior art. It is an object to provide a connector provided with a clip. In order to achieve the above object, a connector according to the present invention has an insertion end at one end in the axial direction having an annular projection at a distance from the tip. A male member, a female member having a housing portion having an inwardly extending receiving hole through which the insertion end can be inserted, and a pair of radially extending stop holes provided in the housing portion near one end. And a C-shaped clip having spring elasticity fitted on the outer periphery of the clip fitting portion, the clip protruding radially inward from the inner peripheral surface of the main body. And a pair of inward projections inserted through the pair of stopper holes, and the pair of inward projections includes a pair of locking claws projected radially inward from the pair of stopper holes. The locking claws on the inner surface gradually decrease in diameter toward the inside A guide surface, wherein when the insertion end of the male member is inserted into the receiving hole of the female member, the annular projection of the insertion end contacts the guide surface of the pair of inward projections. The engaging claw can be pushed outward in the radial direction, so that the annular projection snap-engages with the pair of engaging claws to connect the male member and the female member. When the insertion end of the member is relatively inserted into the receiving hole of the female member, a clip moves toward the other end with respect to the female member, and the clip is provided at the clip fitting portion that abuts. Both or one of the hole wall surface on the other end side of each of the pair of stopper holes and the contact surface on the other end side of the clip is provided with an inclined surface inclined inward in the radial direction toward one end side. The connector is characterized in that the connector is configured as described above. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of the connector of the present invention illustrating a state in which a male member (indicated by a two-dot chain line) is inserted and connected. The same portions as those of the conventional technique shown in FIG. The connector according to the present invention comprises a cylindrical female member 1;
The clip 20 is detachably attached to the female member 1. When the insertion end 31 of the male member 30 is inserted into the female member 1, the male member 30 can be prevented from being pulled out by the clip 20. On the outer peripheral surface of the insertion end 31 of the male member 30, an annular projection 31a for engaging with the clip 20 is provided at a distance from the tip 32. The female member 1 has a shaft hole 14 communicating from one end to the other end.
A housing portion 10 having a receiving hole 12 extending inward from one end into which the insertion end portion 31 can be inserted, and a hose connection portion 11 for connecting the hose 4 to the other end. The housing portion 10 has a receiving hole 12 extending inward in the axial direction so that the insertion end portion 32 of the male member 30 can be inserted into one end portion in the axial direction.
Is formed in an annular clip fitting portion 15 for mounting the clip. The clip fitting portion 15 has a pair of stop holes 17, 17 extending in the radial direction. The C-shaped clip 20 is fitted around the outer periphery of the clip fitting portion 15 of the housing portion 10. The female member 1 is integrally formed of fiber reinforced plastic so as to be lightweight and have high strength. The inner diameter of the receiving hole 12 formed in the housing portion 10 of the female member 1 is such that one end located at the clip fitting portion 15 has a male member 30.
Of the male member 30 is formed to have a small diameter so that the distal end of the male member 30 can be inserted therein. A small-diameter through-hole 1 communicating with the hose 4 at the axis of the hose connection 11 through the receiving hole 12
3, a shaft hole 1 extending from one end of the female member 1 to the other end.
4 are configured. In the small diameter portion inside the receiving hole 12,
Seal members 14, 14 such as O-rings for hermetically sealing the peripheral surface of the distal end portion of the inserted end portion 31 of the inserted male member 30 are mounted. The clip fitting portion 15 for fitting the clip 20 is formed thin, and the thin portion is provided with a pair of stop holes 17 extending in the radial direction. The clip 20 is integrally formed of fiber reinforced plastic to increase spring rigidity, protrudes radially inward from the inner peripheral surface of the C-shaped main body 21, and is formed on the clip fitting portion 15. A pair of inward projections 22, 22 inserted through a pair of stop holes 17, 17, and the pair of inward projections 22, 22 project radially inward from the pair of stop holes 17, 17. Locking claws 23, 23
And a pair of locking claws 23, 23 having guide surfaces 23 a, 23 each having a gradually decreasing diameter inward on the inner surface on one end side.
a. More specifically, the clip 20 has a pair of stopper wall holes 17 provided in the clip fitting portion 15, a hole wall surface 17 a on the other end side of the pair of stopper holes 17, and both end surfaces 24, 24 of the clip at one end. It is formed on a slope inclined inward in the radial direction toward the side. Therefore, as shown in FIG. 2, when the insertion end 31 of the male member 1 is inserted from one end of the female member 1 into the receiving hole 12 in the direction of the arrow (a), first, the annular protrusion 31a of the insertion end 31 is Guide surface 23 of a pair of locking claws 23, 23
a, 23a, the clip 20 moves in the other end direction with respect to the female member 1, and the pair of stop holes 17 provided in the clip fitting portion 15 has a hole wall surface 17 on the other end side.
a, 17a and the contact surfaces 24, 24 on the other end of the clip abut, and then forcefully insert, as shown in FIG. 3, the clip 20 is brought into contact with the hole wall surfaces 17a, 17a on the other end. The clip moves relatively to the clip fitting portion 15 along both inclined surfaces of the other contact surfaces 24, 24 on the other end side of the clip and increases in diameter. Finally, as shown in FIG. The annular projection 31a of 31 passes through a pair of locking claws 23, 23,
The male member 30 and the female member 1 can be connected by snap-engaging the pair of locking claws 23 behind the annular projection 31. As shown in FIG. 4, the clip 20 is provided with an operating portion 25 protruding outward in the radial direction at one of the free ends of the clip body 21. The operating portion 25 allows the clip fitting portion 15 to be engaged. The diameter of the clip body 21 attached to the male member 30 can be expanded, and the connection between the male member 30 and the female member 1 can be released. The clip 20 has a hole wall 17a at the other end,
17a and the other end side abutment surfaces 24, 24 of the clip can move relative to the clip fitting portion 15 along the inclined surface and can be expanded in diameter. The pawls 23, 23 are pushed outward in the radial direction to spread the frictional resistance energy until the annular projection 31a passes through the pair of locking pawls 23, 23. It is possible to reduce the insertion energy to instantaneously engage the snub, reduce the spring elasticity of the clip, increase the holding force of the clip to the male member, and reduce the male member to the same level as before. A connector that can be easily connected can be provided. Note that the present invention is not limited to the above embodiment. For example, as shown in FIG. 5, when the insertion end of the male member is relatively inserted into the receiving hole of the female member 1, the clip 20 moves toward the other end of the female member 1 and comes into contact with the female member 1. The hole wall surface 17b at the other end of each of the pair of stop holes 17 and the inward projection 2 of each of the clips 20
2 of the two contact surfaces, in this case, the clip 20
Only the other end side contact surface 24 may be formed as an inclined surface inclined inward in the radial direction toward one end. Further, as shown in FIG. 6, the pair of stop holes 17 in contact with each other, the hole wall surface 17c on the other end side of the pair of stop holes 17 of the clip fitting portions 15 and the main body 21 of the clip 20 respectively. Of the pair of stopper holes 17 of the clip fitting portion 15 is formed on the other end side abutting surface 21a on an inclined surface which inclines radially inward toward one end side of the hole wall surface 17c on the other end side. No problem. Moreover, a portion 17c of the hole wall surface on the other end side may be formed as an inclined surface inclined inward in the radial direction toward the one end side. As shown in FIG. 7, the outer peripheral edge portion 17c of the hole wall surface at the other end is formed on a slope inclined inward in the radial direction toward one end, and the main body 2 of the clip 20 is formed.
Only the abutment surface of the other end 1 may be formed as an inclined surface inclined inward in the radial direction toward the one end. As described above, the present invention can of course be implemented in other embodiments. However, these can be implemented by appropriately combining them, and can be implemented in other forms without departing from the gist of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a main part sectional view of a connector for explaining a state in which a male member is inserted and connected to a female member. FIG. 2 is a cross-sectional view of a main part showing a state before inserting and connecting a male member to a female member in the connector of FIG. 1; FIG. 3 is an essential part cross-sectional view showing a state immediately before a male member is inserted and connected to the female member in FIG. 2; FIG. 4 is a front view of the clip shown in FIG. 1; FIG. 5 is a cross-sectional view of a principal part showing another embodiment for explaining the features of the present invention. FIG. 6 is a cross-sectional view of a principal part showing still another embodiment for describing the features of the present invention. FIG. 7 is a cross-sectional view of a principal part showing still another embodiment for explaining the features of the present invention. FIG. 8 is a sectional view showing a conventional connector. DESCRIPTION OF SYMBOLS 1 ... Female member 10 ... Housing part 12 ... Receiving hole 15 ... Clip fitting part 17, 17 ... A pair of stopper holes 17a, 17b, 17c ... Others End side hole wall surface 20 Clips 22, 22 A pair of inward projections 23 Locking claw 23a Guide surfaces 21a, 21b, 24 ... Other end contact surface 30 ..Male member 31... Insertion end 31a.

Claims (1)

(57) [Claim 1] A male member having an insertion end having an annular projection at a position spaced from the tip at one end in the axial direction, and the insertion end can be inserted. A female member having a housing portion having a receiving hole extending inwardly, an annular clip fitting portion having a pair of radially extending stopper holes provided near one end of the housing portion, and the clip A C-shaped clip having spring elasticity fitted on the outer periphery of the fitting portion, wherein the clip protrudes radially inward from the inner peripheral surface of the main body and is inserted into the pair of stopper holes. An inward projection, and the pair of inward projections includes a pair of locking claws protruding radially inward from the pair of stopper holes, and the pair of locking claws face inward on the inner surface, respectively. A guide surface having a gradually decreasing diameter, and the insertion end of the male member is inserted into the receiving surface of the female member. Since the annular projection of the insertion end abuts on the guide surface of the pair of locking claws when inserting the pair of locking claws, the pair of locking claws can be pushed outward in the radial direction. An annular protrusion snap-engages with the pair of locking claws to connect the male member and the female member, wherein the insertion end of the male member is relatively inserted into the receiving hole of the female member; When the clip moves, the clip moves in the other end direction with respect to the female member, and the other end of the clip and the hole wall surface at the other end of each of the pair of stop holes provided in the clip fitting portion that abuts on the clip. A connector characterized in that both or one of the side contact surfaces is formed with an inclined surface inclined inward in the radial direction toward one end.