JPH0562992U - Low insertion force connector - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the reliability of electrical connection of a low insertion force connector that can be connected to a mating connector with a small force. A terminal housing substrate 3 having an open terminal housing portion 14 and an inner housing 5 composed of a cover 4 which is rotatably pivoted to face the terminal housing substrate, and an end of the inner housing on the side of a mating connector. A spring 6 for urging the inner housing in the opening direction and an outer housing 7 for inserting and housing the inner housing. The inner housing is provided with a locking portion 18, and the outer housing is provided with a temporary locking portion 35 for the locking portion. A first structure in which the main locking portions 36 are sequentially arranged in the insertion direction of the inner housing, and a housing that also includes a terminal accommodating substrate and a cover and the end portion of the housing on the mating connector side are biased in the closing direction. The spring and the other end of the housing are rotatably provided. The cover is locked and held with the end of the mating connector side of the housing opened, and the end of the mating connector side is closed. It is a second structure constituted by a rotation lock member for fixing the cover so as not to rotate in the twisted state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a low insertion force connector that can be connected to a mating connector or the like with a small force.

[0002]

[Prior Art]

 FIG. 8 shows a conventional low insertion force connector disclosed in Japanese Patent Laid-Open No. 50-27980. The connector 80 includes upper and lower housings 82 and 83 that are rotatably pivoted by a hinge 81, a vane 84 that urges the housings 82 and 83 in the closing direction (arrow C direction), and the housings 82 and 83. It is composed of terminals 85 and 85 mounted on the.

Then, the upper and lower housings 82 and 83 are opened, and the terminal portions 87 and 87 of the circuit board 86 are sandwiched and connected between the terminals 85 and 85 by the biasing force of the spring 84. However, in the above-mentioned conventional structure, since the terminals 85 and 87 are pressed and connected only by the biasing force of the spring 84, the contact force is reduced due to the settling of the spring 84 or the like. Further, there is also a problem that the circuit board 86 is detached when an external force in the housing opening direction (arrow E direction) acts on the rear ends of the housings 82 and 83.

[0004]

[Problems to be solved by the device]

 The present invention has been made in view of the above points, and an object thereof is to provide a low insertion force connector that can always bond terminals with a constant force and does not cause connection disconnection even when an external force is applied. To do.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides an inner housing including a terminal receiving substrate having an open terminal receiving portion, and a cover rotatably pivoted to face the terminal receiving substrate. It is composed of a spring for urging the end portion of the inner housing on the side of the mating connector and an outer housing for inserting and housing the inner housing. The inner housing is provided with a locking portion, and the outer housing is provided with A first structure in which a temporary locking portion and a main locking portion with respect to the locking portion are sequentially arranged in the insertion direction of the inner housing, and a terminal accommodating substrate having an open terminal accommodating portion, and the terminal accommodating substrate And a spring for urging the end of the housing on the side of the mating connector to close, and a rotatably mounted other end of the housing. From , A rotation lock member that locks and holds the cover with the end portion of the housing on the mating connector side open, and fixes the cover so as not to rotate with the end portion of the mating connector side closed. Adopt each of the second structure.

[0006]

[Action]

 In the first structure, the mating connector side end of the inner housing is opened by the biasing force of the spring in a state where the mating portion of the inner housing is engaged with the temporary mating portion of the outer housing. Therefore, the terminal portion of the mating connector can be inserted into the terminal accommodating portion of the inner housing without any resistance. Then, by pushing the outer housing, the inner housing is slidably closed in the outer housing, and the locking portion is movably engaged and fixed to the main locking portion, and the terminal portion is fixed by the outer housing. It is pinched and connected by the force of.

In the second structure, the cover is locked by the rotation lock member in an open state, and the mating terminal portion is inserted through the end opening without resistance. Then, the lock member is released, the housing is closed by the urging force of the spring, and the terminals are joined to each other. Further, the lock member fixes the cover in a closed state, holds the joined state of the terminals, and prevents the housing from being opened unexpectedly by an external force.

[0008]

Embodiment FIG. 1 is an exploded perspective view showing a first embodiment of a low insertion force connector according to the present invention, and FIG. 2 is a perspective view showing the same assembled state. The low insertion force connector 1 includes a terminal accommodating substrate 3 made of synthetic resin for accommodating the terminals 2, and a cover 4 made of synthetic resin rotatably and rotatably opposed to the terminal accommodating substrate 3. The inner housing 5, a winding spring 6 for urging the cover 4 and the terminal accommodating substrate 3 in a direction (arrow A direction) that opens the front end of the inner housing 5 (the end on the mating connector side), and the inner housing 5 And an outer housing 7 made of a synthetic resin for accommodating.

The terminal 2 has a spring tongue 8 for electrical contact on the front side and a locking hole 9 on the middle part, and an electric wire 10 is connected to the rear side. In the terminal accommodating board 3, a plurality of partition walls 12 are erected in parallel on a bottom plate 11 to form a terminal accommodating portion 14 having an opening 13 at the upper and front and rear ends, and the terminals are formed on the inner surface of the bottom plate 11. A locking projection 15 capable of engaging with the second locking hole 9 is provided, a cover pivot hole 16 is provided substantially at the center of the partition wall 12 at both ends, and a spring fixing hole 17 is provided at the rear end thereof. 12. Tapered inclined surfaces 12a and 12b are formed at the upper end of 12 with the pivot hole 16 as a boundary, and locking projections 18 are provided on the outer surface near the rear end of the bottom plate 11, and A stop projection 19 is provided on the outer surface of the tip.

Further, the cover 4 is provided with a terminal pressing protrusion 23 having an engaging groove 22 for the partition wall 12 of the terminal accommodating substrate 3 on the inner surface of the top plate 21, and both sides of the front half of the top plate 21 are provided. A guide wall 24 is vertically provided along the outer surfaces of the partition walls 12 on both sides of the terminal accommodating substrate 3, and a pivot shaft 25 for the cover pivot hole 16 is provided on the inner surface of the guide wall 24 so as to project from the ceiling. A spring fixing hole 26 is provided at the rear end of the plate 21, and a locking ridge 27 positioned corresponding to the locking ridge 18 of the terminal accommodating substrate 3 is provided on the outer surface near the rear end of the top plate 21, A stop ridge 28 is provided on the outer surface of the top end of the top plate 21.

The winding spring 6 has a leg portion 31 extending from the winding portion 30 in a cross shape, and a hook portion 32 is bent and formed at a front end of the leg portion 31, and an initial opening angle α of the leg portion 31 is formed. 2 in a state in which the winding portion 30 is inserted through the rotary shaft of the cover 4 and the hooking portion 32 is engaged with the spring fixing holes 17 and 26 of the inner housing 5. As shown in, the cover 4 is biased in the opening direction in the direction (a direction) in which the tip opening 13 of the inner housing 5 is opened. In that state, the inner housing 5 is inserted into the outer housing 7.

The outer housing 7 is formed in a substantially rectangular tube shape having a rectangular guide hole 34 for inserting the inner housing. The upper and lower inner walls of the guide hole 34 have locking projections 18 of the inner housing 5. , 27 for the temporary locking groove 35 and the main locking groove 36 are sequentially provided in the insertion direction of the inner housing, that is, the temporary locking groove 35 is provided near the insertion opening, and the main locking projection 36 is provided near the wire lead-out opening. The outer wall is provided with a locking arm 37 for the mating female connector.

FIG. 3 is a vertical cross-sectional view showing a state where the low insertion force connector (male connector) 1 is inserted into the mating female connector 39. Here, as shown in FIG. 2, the inner housing 5 of the male connector 1 has its locking projections 18 and 27 engaged with the temporary locking groove 35 of the outer connector 7 to open the tip opening 13 largely. The tab terminal 40 of the mating female connector 39 can be inserted without resistance from the opening 13 because the tab terminal 40 is temporarily locked.

By further pushing the outer housing 7 in the insertion direction (arrow B direction), the locking projections 18, 27 are disengaged from the temporary locking groove 35 and slide in the guide hole 34, and at the same time, the inner housing 5 is moved. The tip end opening 13 is gradually closed by contacting the opening end 41 of the guide hole 34, and the mating tab terminal 40 is connected to the spring tongue 8 of the terminal 2 and the pressing projection 23 of the cover 4, as shown in FIG. It is clamped between and connected. At the same time, the locking ridges 18, 27 engage with the main locking groove 36, and the stop ridge 19 abuts against the tip of the outer housing 7, so that the inner housing 5 is fixedly held in the outer housing 7. ..

FIG. 5 is an exploded perspective view showing a second embodiment of the low insertion force connector according to the present invention, and FIG. 6 shows the same assembled state. The low insertion force connector 43 is a synthetic resin that locks the terminal accommodating substrate 44, the cover 45, the terminal 46, the winding panel 47, and the terminal accommodating substrate 44 and the cover 45 in the open state and fixes them in the closed state. And a rotation lock member 48 made of metal.

The terminal accommodating board 44 has a terminal accommodating portion 49, a cover pivot hole 50, and a spring fixing hole 51, which are similar to those in the previous example, and a locking projection 53 for the mating connector 60 is provided on the outer surface of the bottom plate 52. The pivot holes 55 for the rotation lock member 48 are provided at the rear ends of the partition walls 54 on both sides.

Further, the cover 45 has a terminal pressing protrusion 56, a rotating shaft 57 and a spring fixing hole 58 similar to those in the previous example, and a locking protrusion 61 for the mating connector 60 is provided on the outer surface of the top plate 59. An engaging groove 62 for the lock member 48 is provided on the inner surface of the rear end of the top plate 59. The cover 45 and the terminal housing substrate 44 form a housing 63.

The winding spring 47 is one in which the leg portion 65 is opened in a V shape and the initial opening angle α is set to a large value. The winding portion 66 is fixed to the rotating shaft 57, and the leg portion 65 is fixed to each. With the holes 51 and 58 engaged with each other, the cover 45 and the terminal accommodating substrate 44 are urged in the direction of closing the tip opening 67 of the housing 63 (direction C).

The rotation lock member 48 is formed by connecting ear pieces 69 to both sides of the lock bar 68 and projecting a rotation shaft 70 on the inner surface of the ear piece 69. The lock bar 68 is rotatably provided so as to be engaged with the pivot hole 55 of the terminal accommodating substrate 44. The inner surface 68a of the lock bar 68 is the outer surface of the rear end portion of the cover 45, and the outer surface 68b of the lock bar 68 is the rear end of the cover. The engaging grooves 62 on the inner surface of the inner part can be engaged with each other.

In FIG. 6, the rotation lock member 48 of the low insertion force connector 43 engages the inner surface 68 a of the lock bar 68 with the outer surface of the rear end portion of the cover 45, and the biasing force of the winding spring 47 in the arrow C direction. Against this, the front end opening 67 of the housing 63 is opened wide. In this state, the tab terminal 71 of the mating connector 60 can be freely inserted into the terminal accommodating portion 49 through the opening 67.

On the outer wall 72 of the housing of the mating connector 60, lock plates 74, 74 having engaging projections 73 for the locking projections 53, 61 of the connector 43 are rotatably provided via a hinge. A locking claw 75 is projected from the outer wall 72, and an engaging hole 76 for the locking claw 75 is provided in the lock plate 74.

Then, while the terminals 46 and 71 of both connectors 43 and 60 are in contact with each other, the lock member 48 is rotated in the arrow D direction to release the engagement with the cover 45. The pressing protrusion 56 of the cover 45 is pressed onto the terminal 71 by the urging force of the coil spring 47. Further, as shown in FIG. 7, the lock member 48 is brought into engagement and abutment with the engagement groove 62 of the cover 45 to fix the housing 63 in the closed state. Hold. Next, the locking plates 74, 74 of the mating connector 60 are rotated to engage the engaging projections 73 with the locking projections 53, 61, and prevent the connector 43 from slipping out. The lock plate 74 is prevented from being disengaged from rotation by a locking claw 75.

[0023]

[Effect of the device]

 As described above, according to the present invention, since the joined state of the terminals in the housing is maintained by the outer housing and the rotation lock member, it is possible to improve the reliability of the electrical connection between the terminals over time. .. Further, the outer housing and the rotation lock member can prevent the housing from being opened unexpectedly and prevent the terminals from being disconnected.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a low insertion force connector according to the present invention.

FIG. 2 is a perspective view showing an assembled state (temporary locking state) of the same.

FIG. 3 is a vertical sectional view showing an assembled state (temporary locking state) of the same.

FIG. 4 is a vertical sectional view showing an assembled state (fully locked state) of the same.

FIG. 5 is an exploded perspective view showing a second embodiment of the low insertion force connector according to the present invention.

FIG. 6 is an exploded perspective view showing an assembled state and a mating connector of the same.

FIG. 7 is a vertical sectional view showing a state of assembly with a mating connector.

FIG. 8 is a vertical cross-sectional view showing a conventional example.

[Explanation of symbols]

 1,43 Low insertion force connector 3,44 Terminal accommodating board 4,45 Cover 5 Inner housing 6,47 Spring 7 Outer housing 14,49 Terminal accommodating part 18,27 Locking projection 35 Temporary locking groove 36 Regular locking groove 48 Rotation lock member 63 Housing

Claims (2)

[Scope of utility model registration request] 1. An inner housing composed of a terminal accommodating substrate having an open terminal accommodating portion, and a cover pivotally mounted so as to face the terminal accommodating substrate, and a mating connector side end of the inner housing. A spring for biasing the inner housing in an opening direction and an outer housing for inserting and housing the inner housing.
A low insertion force connector, characterized in that a temporary locking portion and a main locking portion for the locking portion are sequentially arranged in the outer housing in the insertion direction of the inner housing. 2. A housing comprising a terminal accommodating substrate having an open terminal accommodating portion and a cover rotatably and pivotally mounted facing the terminal accommodating substrate, and a mating connector side end portion of the housing. A spring that urges in the closing direction and a rotatably provided at the other end of the housing. The cover is locked and held while the end of the housing on the mating connector side is opened, and the end of the mating connector is formed. A low insertion force connector comprising a rotation lock member for fixing the cover so as not to rotate in a closed state.