JP2003031304A - Lever type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lever type connector capable of preventing deterioration of a seal property due to shrinkage during molding. SOLUTION: An annular seal ring 14 is fit on an outer circumferential face of a female side connector housing 10, and a lever 20 provided with a cam groove 24 is attached to an outer circumferential face of a hood part 12 covering its periphery. A male side connector housing 40 is provided with a cylindrical fitting part 41 capable of fitting in the female side connector housing 10 and a cam pin 43 is protrudedly provided on its outer circumferential face. In a normally fit state, an interior of the cylindrical fitting part 41 is sealed from an exterior by adherence of the seal ring 14 to a seal face S of an inner circumference of the cylindrical fitting part 41. Since the cam pin 43 is arranged deviated in a fitting direction to the seal face S, even when sinking occurs on the back side of the cam pin 43 during molding, deterioration of a sealing property due to this can be prevented.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof type lever-type connector. 2. Description of the Related Art Japanese Patent Laid-Open No.
There is one described in 102,747 gazette. this is,
As shown in FIG. 7, a female connector housing 2 to which a lever 1 is attached and a male connector housing 3 that can be fitted to the female connector housing 2 are provided. The female connector housing 2 is provided with a hood portion 4 so as to cover the outer periphery of the rear portion from the outer periphery thereof. A lever 1 having a cam groove 6 is rotatably attached to the outer surface of the hood portion 4. On the other hand, the male connector housing 3 includes a tubular fitting portion 7 into which the female connector housing 2 can be fitted, and a cam pin 8 protrudes from an outer surface of the tubular fitting portion 7. When the cam pin 8 is engaged with the cam groove 6 and the lever 1 is rotated, the male and female connector housings 2 and 3 are drawn by the cam action of the cam pin 8 and the cam groove 6, and are properly fitted. In the normal fitting state, the inside of the tubular fitting portion 7 is sealed from the outside by the seal ring 5 being in close contact with the inner peripheral surface near the front end of the tubular fitting portion 7. [0005] In the connector having the above-described structure, sinking may occur on the surface of the cylindrical fitting portion 7 on the back side of the cam pin 8 during molding. Then, the seal ring 5 did not adhere well to the recess thus formed, and there was a possibility that the sealing performance was reduced. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lever-type connector capable of preventing a decrease in sealing performance due to generation of sink during molding. [0004] In order to solve the above-mentioned problems, a lever-type connector according to the first aspect of the present invention rotatably supports a lever having a cam groove and has an annular ring around the lever. A connector housing having a seal ring fitted therein and another connector housing having a cylindrical fitting portion having a cam pin protruding from an outer surface thereof, wherein the cam pin is engaged with the cam groove and a lever is provided. By rotating, the one connector housing is fitted inside the cylindrical fitting portion by the cam action of the cam pin and the cam groove, and the seal ring is formed inside the cylindrical fitting portion. A lever-type connector adapted to be in intimate contact with a peripheral sealing surface, wherein the cam pins are arranged so as to be shifted from the sealing surface in a fitting direction. According to the first aspect of the present invention, since the cam pins are displaced in the fitting direction with respect to the sealing surface, even if sinks occur on the back side of the cam pins during molding, Thus, it is possible to prevent the sealing performance from being reduced due to the above. Next, an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1, 2 and 5, the lever-type connector according to the present embodiment includes a female connector housing 10 to which a lever 20 is attached.
(Corresponding to "one connector housing" of the present invention, FIG. 5)
) And a male connector housing 40 (corresponding to the “other connector housing” of the present invention) that can be fitted with the female connector housing 10. The female connector housing 10 accommodates a plurality of female terminal fittings (not shown) therein, and has a wire cover 11 attached to the back. Also, from the outer periphery of the rear part of the female connector housing 10,
A substantially rectangular cylindrical hood portion 12 protruding forward is provided so as to cover the periphery of the female connector housing 10. A seal mounting concave portion 13 having a concave shape along the outer peripheral surface is provided in a portion of the female connector housing 10 on the inner side of the hood portion 12, and an annular seal ring 14 is fitted therein. A pair of support shafts 15 protrude from both left and right side surfaces of the hood portion 12, and a lever 20 is supported by the support shafts 15. The lever 20 is made of a synthetic resin material, and has a pair of plate-like arm portions 22 integrally provided at both ends of an operation portion 21 which is long on the left and right, and has a gate shape as a whole. The lever 20 rotates between a fitting start position shown in FIG. 2 and a fitting completion position shown in FIG. 4 by fitting a bearing hole 23 formed in the arm portion 22 to the support shaft 15. Operable. A spiral cam groove 24 centering on the support shaft 15 is formed in the arm 22, and one end of the cam groove 24 opens as an inlet 24 </ b> A on the outer peripheral edge of the arm 22. When the lever 20 is at the mating start position,
As shown in (2), the receiving port 24A is positioned so as to be aligned with the relief groove 17 of the hood portion 12 and to face the cam pin 43 of the mating male connector housing 40. On the other hand, the male connector housing 40 is formed of a synthetic resin material, and is provided with a male terminal fitting housing (not shown) provided inside the electric device C (only a part is shown in the figure). A substantially rectangular tubular fitting portion 41 that protrudes from the surface of the device C and into which the female connector housing 10 can be fitted.
And A plurality of male tabs 42 of male terminal fittings protrude from the cylindrical fitting portion 41. A pair of cam pins 43 project from the left and right outer surfaces of the cylindrical fitting portion 41, and the cam pins 43 penetrate through the relief grooves 17 of the hood portion 12 and engage with the cam grooves 24. When the lever 20 is rotated in a state where the cam pin 43 and the cam groove 24 are engaged, the cam action causes the male and female connector housings 1 to rotate.
0, 40 are fitted / removed. The cylindrical fitting portion 41 is fitted into a gap between the hood portion 12 and the female connector housing 10, and when the two connector housings 10 and 40 are fitted, the outer peripheral portion of the seal ring 14 is cylindrical. The inside of the cylindrical fitting portion 41 is sealed from the outside by being in close contact with the inner peripheral surface of the shape fitting portion 41 and the sealing surface S near the distal end. In the cylindrical fitting portion 41, the cam pin 43 is provided at a position displaced to the back side in the fitting direction with respect to the seal surface S. Next, the operation of this embodiment will be described. To fit the male and female connector housings 10, 40, the hood portion 12 of the female connector housing 10 is connected to the cylindrical fitting portion while the lever 20 is held at the fitting start position as shown in FIGS. The connector housings 10 and 40 are fitted shallowly so as to cover the connector housing 41. Then, the cam pin 43
Fits into the receiving port 24 </ b> A of the cam groove 24. Subsequently, when the lever 20 is rotated toward the fitting completed position, the cam pin 43 moves in the cam groove 24 and the cam action causes the two connector housings 1 to move.
0 and 40 approach (see FIG. 3). And lever 20
When reaches the fitting completed position, as shown in FIGS. 4 and 6,
The two connector housings 10 and 40 are in a properly fitted state, and the male tab 42 and the female terminal fitting in the female connector housing 10 are electrically connected. In the normal fitting state, the distal end of the cylindrical fitting portion 41 is fitted into the gap between the hood portion 12 and the female connector housing 10, and the seal ring 14 is in close contact with the sealing surface S. Fitting part 4
1 is in a sealed state. As described above, according to the present embodiment, since the cam pins 43 are displaced in the fitting direction with respect to the seal surface S, even if sink marks occur on the back side of the cam pins 43 during molding, This can prevent the sealing performance from being reduced. The technical scope of the present invention is not limited by the above-described embodiments. For example, the followings are also included in the technical scope of the present invention. (1) In the above embodiment, the lever is attached to the female connector housing and the cam pin is provided to the male connector housing. However, the lever is attached to the male connector housing and the cam pin is provided to the female connector housing. Is also good. (2) In the above embodiment, the cam pin is located on the back side in the fitting direction with respect to the sealing surface, but the cam pin may be arranged on the distal end side in the fitting direction with respect to the sealing surface.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state in which male and female connector housings are detached in this embodiment. FIG. 2 is a side view showing a state in which both male and female connector housings are detached. FIG. FIG. 4 is a side view showing a state in which the housings are being fitted. FIG. 4 is a side view showing a state in which the male and female connector housings are properly fitted. FIG. 5 is a cross-sectional view showing a state in which the male and female connector housings are detached. FIG. 7 is a cross-sectional view showing a state in which both connector housings are properly fitted. FIG. 7 is a cross-sectional view showing a conventional lever-type connector. 24 cam groove 40 male connector housing (other connector housing) 41 cylindrical fitting portion 43 cam pin S sealing surface

Claims (1)

1. A connector housing having a lever having a cam groove rotatably supported and an annular seal ring fitted around the lever, and a cam pin protruding from an outer surface. The other connector housing having a cylindrical fitting portion is provided, and the cam pin is engaged with the cam groove to rotate a lever. A connector housing is fitted inside the cylindrical fitting portion, and the seal ring is in close contact with an inner peripheral sealing surface of the cylindrical fitting portion. A lever-type connector, wherein the lever-type connector is arranged to be displaced from the sealing surface in a fitting direction.