KR100783419B1 - Connector - Google Patents

Abstract

A connector is provided to reduce a cut of a cam unit effectively even through an actuator is rotated repeatedly and maintaining the shape of the cam unit, thereby preventing the workability of click or contact pressure from being deteriorated and surely maintaining the actuator in a locking/unlocking position. A connector includes plural first contacts and second contacts, an insulator(20), an actuator(60), and a plastic cam unit(63). The plural first contacts and second contacts are constructed with conductive metal materials. The insulator has the first and second contact and is constructed with plastic materials with insertion grooves into which a contact object is inserted. The actuator is supported to be rotated between locking position and unlocking position in the insulator. The plastic cam unit is contacted to the contact object by pushing the first and second contact.

Description

Connector {Connector}

1 is a perspective view of the connector according to an embodiment of the present invention seen from the rear side.

2 is a perspective view from the front of the connector.

3 is an exploded perspective view seen from the rear of the connector;

4 is an exploded perspective view seen from the front of the connector;

5 is a plan view of the connector when the actuator is in the locked position.

6 is a cross-sectional view taken along the line VI-VI of FIG. 5.

7 is an enlarged perspective view of an actuator unit.

FIG. 8A is a cross sectional view along line VIIIa-VIIIa of FIG. 1 when the FPC is in the uninserted state and the actuator is in the unlocked position, and FIG. 8B is the FPC in the uninserted state and the actuator is unlocked. A cross-sectional view taken along line VIIIb-VIIIb in FIG. 1 when in position.

FIG. 9A is a cross sectional view along line VIIIa-VIIIa of FIG. 1 when the FPC is in the inserted state and the actuator is in the unlocked position, and FIG. 9B is a view in which the FPC is in the inserted state and the actuator is in the unlocked position. It is sectional drawing along the VIIIb-VIIIb line of FIG.

(A) is a cross sectional view along the line VIIIa-VIIIa of FIG. 1 when the FPC is in the inserted state and the actuator is in rotation, and (b) is when the FPC is in the inserted state and the actuator is in rotation It is sectional drawing along the VIIIb-VIIIb line of FIG.

FIG. 11A is a cross sectional view along line VIIIa-VIIIa in FIG. 1 when the FPC is in the inserted state and the actuator is rotated to the locked position, and FIG. 11B is rotated to the locked position when the FPC is in the inserted state. It is sectional drawing along the VIIIb-VIIIb line of FIG.

** Description of protection of major reference symbols **

10: connector 20: insulator

21: First half 22,23: Stepped

24: first contact surface 25: insertion hole

26: rear wall 27: engaging groove with floor

28: through fitting groove 29: bottom with fitting groove

30: rear side wall 31: support recess

40: first contact 41: upper side

42: lower side 43: elastic connection

44: To-be-pressed surface (to-be-pressed) 45,46: Contact convex (connection)

47: hook-shaped conductive portion 50: second contact

51: upper side 52: lower side

53: elastic connection part 54: the surface to be crimped (compressed part)

55, 56: convex part (connection part) 57: hook-shaped conduction part

58: second contact surface 59: projection prevention portion

60: actuator 61: control panel

62: connecting piece 63: cam part

64: support shaft 65: lock holding surface

66: curved surface 67: recessed portion

68a: non-locking side 68b: facing side

69a: first rotational contact surface 69b: second rotational contact surface

70: substrate 80: FPC (connection object)

The present invention relates to a connector for electrically conducting a connection object such as a substrate and a flexible printed circuit board (FPC).

Japanese Patent No. 3484659 discloses an insulator composed of a metallic (conductive) contact electrically connecting a substrate and a connection object such as a flexible printed circuit board (FPC), an insulating material supporting the contact, and an actuator rotatably supported by the insulator. Disclosed is a connector having a. The contact is made by connecting the middle part of the upper side and the lower side with a connecting spring. The front end of the upper side and the lower side can contact the connecting object, and the cam portion formed at the end of the actuator can contact the rear end of the upper side of the contact. Do.

In this invention, when an actuator rotates to a predetermined locked position, the cam part contacts the cam storage recessed part formed in the back end part of a contact lower side part, and rotates to the back end part of a contact upper side part. Then, the rear end of the contact upper side moves upward from the initial position, and thus the front end of the upper contact side of the contact moves in a direction closer to the connection object, so that the contact pressure of the contact front end and the connection object is increased.

In addition, when the actuator rotates to the locked position, the force is exerted from the rear end of the upper edge of the contact portion and the cam storage recess to the cam portion, thereby preventing rotation of the actuator from the locked position to the initial position. Direction of rotation). Therefore, the contact pressure of the contact front end part and the connection object is kept high.

In the connector described in Japanese Patent No. 3484659, the cam portion is in rotational contact with the cam storage recess when the actuator rotates between the initial position and the locked position. When the actuator is rotated repeatedly, the cam portion made of resin is used for punching metal. It is easy to shave by repeated sliding movement with the cam accommodating recessed part formed. When the shaving occurs in this way, the dimension of the cam portion is reduced, so when the actuator is rotated to the locked position, the rear end portion of the upper edge of the connector cannot be crimped to a desired position, and as a result, the contact pressure of the front end portion of the connector and the connection object may drop. There was.

In addition, by forming a convex portion which rotates in contact with the connector during the rotation operation of the actuator on the surface of the cam portion, it is possible to improve the operability of the actuator and at the same time obtain an appropriate click feeling, and also to hold the actuator at an arbitrary rotation position during the operation process. I'm letting you. However, since this convex part becomes a resistance at the time of rotation of an actuator, the convex part becomes easy to shave, and there exists a possibility that these effects may become thin.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connector which can suppress deformation due to shaving of a synthetic resin cam portion, and does not degrade reliability or workability even when the actuator is repeatedly rotated, and the actuator can be reliably locked and held.

The connectors of the present invention are all made of a conductive metal material and alternately arranged in a row, and hold a plurality of first and second contacts, and the first and second contacts, and the insertion hole into which the connection object is inserted. An insulator made of a synthetic resin material having a branch; an actuator supported by the non-locked position and a locked position by the insulator; and the actuator formed at the end of the insulator side of the actuator, when rotated to the locked position. A connector having a cam portion made of synthetic resin for pressing the first and second contacts to contact the connection object, wherein a first rotational contact surface is formed on one of the first contact and the second contact, and the actuator is provided with the actuator. The first rotational contact when is rotated between the unlocked position and the locked position The first to-be-contacted surface is formed in rotational contact, and a recess is formed in a portion facing the other contact of the cam portion, the bottom surface of which constitutes an opposing surface, and the other contact is formed in the other contact. And when the actuator rotates between the non-locked position and the vicinity of the locked position, a second contacted surface is formed in which the opposed interfacing surface is relatively rotated without contact.

It is preferable that the said 1st to-be-contacted surface is a flat surface, and the said cam part has a flat lock holding surface which surface-contacts with the said 1st to-be-contacted surface, when the said actuator rotated to the said locked position.

It is also preferable that the second to-be-contacted surface is a flat surface, and the cam portion has a flat lock holding surface that is in surface contact with the second to-be-contacted surface when the actuator is rotated to the locked position.

The first contact may be a contact attached to the insulator from the insertion hole side, and the second contact may be a contact attached to the insulator from the side opposite to the insertion hole.

(Example)

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In addition, in the following description, the front-back direction is based on the arrow direction shown in FIGS.

The connector 10 has an insulator 20, a first contact 40, a second contact 50 and an actuator 60 as a large component.

The insulator 20 is obtained by injection molding an insulating and heat resistant synthetic resin material, and a substrate 70 is fixed to the bottom surface thereof (see the imaginary line in Fig. 8A. Other drawings are omitted). 3 and 4, the rear half of the insulator 20 is concave than the first half 21, and the rear half of the insulator 20 has two stepped portions 22 that decrease as it goes back. 23) is formed. The upper surface of the stepped section 23 is the first contacted surface 24 that is a horizontal plane (flat surface). A horizontally long rectangular insertion hole 25 for inserting the flexible printed circuit board (connected object, hereinafter referred to as FPC) 80 is drilled on the front surface of the insulator 20. As shown to FIG. 8 thru | or 11, the back end of the insertion hole 25 is terminated just before the front part 21 and the rear part wall 26. As shown to FIG. On the bottom surface of the insertion hole 25 of the insulator 20, a plurality of bottom engaging grooves 27 extending in the front-rear direction are recessed side by side in the left-right direction. As shown in FIGS. 8-11, this bottom engaging groove 27 penetrates through the rear wall 26 and reaches the inside of the step 23. In addition, the upper surfaces of the rear wall 26 and the stepped portion 22 are connected to the engaging grooves 27 having a corresponding bottom within the interior of the insulator 20, which overlap with them, and have a bottomed engagement. The same number of through engagement grooves 28 as the grooves 27 are formed. In addition, there are several floors extending from the front end of the bottom surface of the insertion hole 25 to the rear end surface of the step 23 between the adjacent engaging engagement grooves 27 (penetrating engagement grooves 28). The engaging groove 29 is recessed. In addition, support recesses 31 are formed on opposite surfaces of the rear side wall 30 on the left and right sides of the insulator 20.

The first contact 40 is made of a conductive metal material and has a substantially 'E' shape when viewed from the side. That is, all have the upper side part 41 and the lower side part 42 extending in the front-back direction, and the elastically deformable elastic connection part 43 which connects the middle part of the upper side part 41 and the lower side part 42. As shown in FIG. A compressed surface 44 (compressed portion) is formed near the rear end of the lower side of the upper side 41, and a contact convex for electrically conducting with the FPC 80 near the front end of the lower side of the upper side 41 is formed. The parts (connections) 45 are protruding. A contact convex portion 46 for electrically conducting with the FPC 80 is protruded at a position facing the contact convex portion 45 on the upper side of the lower side portion 42, and a hook at the front end of the lower side portion 42. The shape conduction part 47 is formed.

The first contact 40 is fixed to the insulator 20 by inserting each lower side portion 42 from the front surface (insertion hole 25) of the insulator 20 into each of the bottom engaging grooves 27. . At this time, the first half of the upper side 41 and the lower side 42 is positioned in the insertion hole 25, and the rear end of the upper side 41 is rearward from the engaging groove 28 through the insulator 20. Outside) to engage the hook-shaped conducting portion 47 with the front end of the bottom of the insulator 20. Thus, the 1st contact 40 fixed to the insulator 20 electrically connects with the board | substrate 70 by the hook-shaped conduction part 47 soldered to the land part of the board | substrate 70 (FIG. a)).

The second contact 50 is made of a conductive metal material and has a substantially 'E' shape from the side. That is, all have the upper side part 51 and the lower side part 52 which extend substantially in the front-back direction, and the elastically deformable elastic connection part 53 which connects the middle part of the upper side part 51 and the lower side part 52. As shown in FIG. A compressed surface 54 (compressed portion) is formed near the rear end of the lower side of the upper side 51, and contact convex for electrically conducting with the FPC 80 near the front end of the lower side of the upper side 51. The part (connection part) 55 protrudes. The contact convex part 56 for electrically conducting with the FPC 80 is protruded in the position facing the contact convex part 55 of the upper side of the lower side part 52, and the hook part is located in the back end of the lower side part 52. The shape conduction part 57 is formed. In addition, a second contact surface 58, which is a horizontal plane (flat surface), is formed near the rear end portion of the upper surface of the lower side portion 52, and a projection preventing portion 59 is provided on the front and rear of the second contact surface 58 to protrude therefrom. It is.

The second contact 50 is fixed to the insulator 20 by inserting each of the upper side 51 and the lower side 52 into the corresponding engagement grooves 29 with the corresponding bottoms from the rear surface of the insulator 20. do. At this time, the first half portion 51 and the first half portion 52 of the lower portion 52 and the elastic connection portion 53 is placed in the insertion hole 25, and the hook-shaped conduction portion 57 is placed at the rear end of the bottom of the insulator 20. Keep fit When the second contact 50 is fixed to the insulator 20, since the positions of the front ends of the first contact 40 and the second contact 50 are shifted back and forth, the first contact 40 and the second contact 50. ) Constitutes a so-called Garjija shape. In this way, the second contact 50 fixed to the insulator 20 is electrically connected to the substrate 70 by soldering the hook-shaped conductive portion 57 to the land portion of the substrate 70 (FIG. 8). (A)). In addition, when the second contact 50 is fixed to the insulator 20, the second contact surface 58 of the second contact 50 and the first contact surface 24 of the insulator 20 are coplanar from the side. It is located above.

The actuator 60 is obtained by injection molding a heat-resistant synthetic resin material, and includes a control unit 61 extending in the left and right directions, a plurality of connecting pieces 62 arranged side by side extending downward from the bottom surface of the control unit 61, and It has the cam part 63 extended in the left-right direction provided connected to the lower end of the connection piece 62, and the support shaft 64 which protruded in the left-right side of the cam part 63. As shown in FIG. The cam portion 63 is formed with a flat lock retaining surface 65 over its entire length. In addition, the part on the opposite side to the lock holding surface 65 of the cam part 63 becomes the crimped curved surface 66 formed over the cam part 63 whole length.

The recessed part 67 is formed in the part which faces the 2nd contact 50 of the cam part 63 opposite the operation part 61 on the opposite end surface. The non-locking holding surface 68a is formed in the part in which the recessed part 67 of the cross section opposite to the operation part 61 of the cam part 63 is not formed, and the lock holding surface 65 and the non-locking holding surface 68a are formed. The first rotational contact surface 69a which consists of curved surfaces is formed in each part between (circle). On the other hand, the bottom surface of each concave portion 67 is the opposing surface 68b, and the second rotary contact surface 69b made of the curved surface is formed at each portion connecting the lock retaining surface 65 and the opposing surface 68b. Formed.

The actuator 60 is rotatably supported around the support shaft 64 by the insulator 20 by engaging the left and right support shafts 64 with the support recesses 31 on the left and right sides of the insulator 20, respectively. In the gap between the adjacent connecting pieces 62, the rear end of the upper side 41 of the corresponding first contact 40 and the rear end of the upper side 51 of the second contact 50 are inserted in a relatively movable manner. Penetrates. When the left and right support shafts 64 are fitted into the left and right support recesses 31 in this manner, as shown in FIG. 8B, the projection preventing portion 59 of the second contact 50 is cam portion 63. Since it is located immediately after the ()), the left and right support shafts 64 are prevented from escaping from the left and right support recesses 31. In addition, each of the non-locking holding surfaces 68a and the first rotational contact surface 69a of the cam portion 63 faces each of the first to-be-contacted surfaces 24 of the insulator 20, and each recess of the cam portion 63 is formed. (67) (the opposing surface 68b and the second rotary contact surface 69b) face the second contacted surface 58 of each second contact 50, respectively.

The actuator 60 is rotatable between the locked position shown in FIG. 11 rotated backward from the locked position and the locked position which stands substantially with respect to the insulator 20 shown to FIG. 1, FIG. 8, and FIG.

Next, the operation of the connector 10 having the above configuration will be described with reference to FIGS. 8 to 11.

In the state shown in FIG. 8, that is, the FPC 80 is not inserted into the insertion hole 25 of the insulator 20, and the actuator 60 is in the unlocked position, the non-locking holding surface of the actuator 60 is shown. 68a is in surface contact with the first to-be-contacted surface 24 and the second to-be-contacted surface 58, and the locking retaining surface 65 and the first rotational contact surface 69a of the cam portion 63 are prevented from falling out. ), The actuator 60 is held in the unlocked position. In this state, when the FPC 80 is inserted into the insertion hole 25 of the insulator 20 from the front, as shown in FIG. 9, the FPC 80 is connected to the first contact 40 in the insertion hole 25. It enters between the upper edge part 41 and the front edge part of the lower edge part 42, and between the upper edge part 51 and the lower edge part 52 of the 2nd contact 50.

In the case where the FPC 80 is to be temporarily held, the contact convex portion 45 and the contact convex portion 46 of the first contact 40 and the second contact 50 shown in FIG. 8 are free. The space | interval and the space | interval of the contact convex part 55 and the contact convex part 56 are made into the LIF (Low Insertion Force) structure which makes it narrower than the thickness of the FPC80. In this case, when the FPC 80 enters between the contact convex portion 45 and the contact convex portion 46 and between the contact convex portion 55 and the contact convex portion 56, the elastic connecting portion 43 as shown in FIG. ) And the elastic connecting portion 53 slightly deformed so that the upper side portion 41 and the upper side portion 51 rotate slightly in the clockwise direction of FIG. 9 with respect to the elastic connecting portion 43 and the elastic connecting portion 53, respectively. In addition, the contact convex portion 45, the contact convex portion 46 of the first contact 40, the contact convex portion 55 and the contact convex portion 56 of the second contact 50 are disposed on the upper and lower sides of the FPC 80. By abutting both surfaces, it is possible to temporarily hold the FPC 80 through the first contact 40 and the second contact 50.

In addition, when the insertion force of the FPC 80 is to be made no-load, it is set as the ZIF (Zero Insertion Force) structure. In this case, in the free state of the first contact 40 and the second contact 50 shown in FIG. 8, the distance between the contact convex portion 45 and the contact convex portion 46 and the contact convex portion 55 and the convex portion 55 are convex. By making the space | interval of the part 56 larger than the thickness of the FPC 80, insertion of the FPC 80 at no load is attained.

In addition, according to the specification of the FPC 80, electrical connection can be performed only at the upper surface (contact convex portions 45 and 55) or the lower surface (contact convex portions 46 and 56), or at both upper and lower sides.

In this state, when the operation part 61 is picked up and the actuator 60 is rotated toward the locked position (back side) about the support shaft 64, the cam part 63 rotates as shown in FIG.

At this time, as shown in FIG. 10A, the upper curved portion 41 is elastically connected because the curved curved surface 66 of the cam portion 63 is in rotational contact with the compressed surface 44 of the upper edge 41. Rotate counterclockwise around (43). For this reason, the contact pressure of the contact convex part 45, the contact convex part 46, and the FPC80 becomes high, and the conduction state of the 1st contact 40 and the FPC80 is assured. At this time, each of the first rotational contact surfaces 69a of the cam portion 63 is in rotational contact with each of the first to-be-contacted surfaces 24 of the insulator 20 facing each other.

Similarly, as shown in FIG.10 (b), when the curved surface 66 for crimping of the cam part 63 rotates in contact with the to-be-pressed surface 54 of the upper side 51, the upper side part 51 is an elastic connection part. Rotate counterclockwise around (53). For this reason, the contact pressure of the contact convex part 55, the contact convex part 56, and FPC80 becomes high, and the conduction state of the 2nd contact 50 and FPC80 is assured. At this time, the opposing interfacial surfaces 68b of the cam portion 63 do not contact the second contact surface 58 of the second contact 50 facing each other, and each second rotational contact surface 69b is locked in FIG. 11. Only a slight rotational contact is made to each of the second to-be-contacted surfaces 58 facing immediately before reaching the position.

By this rotation operation, the contact protrusions 45, 46, 55, 56 corresponding to the pattern (not shown) formed on the FPC 80 are turned on, respectively.

As shown in FIG. 11, when the actuator 60 reaches the locked position, the crimped curved surface 66 of the cam portion 63 is the rear end portion and the upper edge portion 51 of the compressed surface 44 of the upper edge portion 41. Is engaged in a surface contact state with the rear end portion of the to-be-compressed surface 54. In addition, since the lock retaining surface 65 of the cam portion 63 engages in surface contact with the first to-be-contacted surface 24 of the insulator 20 and the second to-be-contacted surface 58 of the lower side portion 52, the actuator 60 is held in the locked position. At this time, a straight line connecting the first to-be-contacted surface 24 and each to-be-adhered surface 44 from the first to-be-contacted surface 24 and each to-be-adhered surface 44 of each step 23 to the cam portion 63. Direction (up and down direction in FIG. 11) acts, and from the respective compressed surfaces 54 and the second to-be-contacted surfaces 58 to the cam portion 63, the to-be-compressed surface 54 and the second to-be-contacted surface ( 58) the reaction force in the linear direction is connected. However, since the first to-be-contacted surface 24 of the insulator 20 and the second to-be-contacted surface 58 of the second contact 50 are the horizontal planes orthogonal to these reaction forces, the actuator 60 is closed by these reaction forces. It can be held securely in the locked position, and the actuator 60 can be prevented from rotating to the non-locked position due to external factors such as vibration and shock. In addition, when the actuator 60 is incompletely operated, for example, the actuator 60 cannot be pushed to the locked position completely (it can only be rotated until just before the locked position), the cam part by each of the first contact 40 and the second contact 50 can be rotated. The reaction force to the actuator 60 rotates in the locked position direction by the reaction force to the 63, and the actuator 60 automatically rotates to the normal locked position, thereby preventing the incomplete operation of the actuator 60. Can be.

In addition, since the stepped portion on the lock retaining surface 65 side of the cam portion 63 is engaged with the insulator 20 (and the first contact 40) or the second contact 50, the lock retaining surface of the cam portion 63. Each shape of the 65, the first to-be-contacted surface 24 of the insulator 20, and the second to-be-contacted surface 58 of the second contact 50 can be simplified to a straight line, a plane, or the like. Therefore, the shape precision and productivity of the insulator 20, the 1st contact 40, and the 2nd contact 50 can be improved, and since stress does not concentrate, intensity stability can be improved.

In addition, when the actuator 60 rotates from the non-locked position to the locked position, the first rotational contact surface 69a of the cam portion 63 rotates in contact with the first to-be-contacted surface 24 of the insulator 20. Since the 63 and the insulator 20 are formed of synthetic resin, the cam portion 63 is hardly worn (deformed) by the insulator 20. In addition, while the actuator 60 rotates from the non-locked position to the locked position, the opposed surface 68b of the cam portion 63 does not contact the second contact surface 58 of the second contact 50 made of metal. In addition, since the second rotary contact surface 69b only slightly contacts the second contacted surface 58 just before reaching the locked position, the second contacted surface of the lower side portion 52 of the second contact 50 The amount of wear (deformation) of the cam portion 63 generated by the 58 is very small.

As described above, even when the actuator 60 is repeatedly rotated, wear hardly occurs in the cam portion 63. For this reason, even when the actuator 60 is rotated repeatedly, when the actuator 60 is rotated to the locked position, the contact portions 45, 46, 55, 56 of the upper side 41 are moved by the cam portion 63. And the contact pressure of the FPC 80 can be reliably maintained, and the actuator 60 can be reliably held in the locked position.

In addition, when the actuator 60 is rotated between the non-locked position and the locked position, each first rotational contact surface 69a makes sliding contact with each of the first to-be-contacted surfaces 24, so that an appropriate click feeling can be obtained. have.

In addition, since the shape of the cam portion 63 can be maintained, workability such as reliability and click feeling of the actuator 60 operation can be maintained.

In the present embodiment, the upper surface of the rear end portion of the lower side portion 42 of the first contact 40 is covered with the stepped portion 23, and the upper surface of the lower side portion 52 of the second contact 50 is exposed. However, the upper end of the rear end of the lower side 42 of the first contact 40 is exposed, and the upper end of the rear end of the lower side 52 of the second contact 50 is covered with the step 23, and the cam portion 63 is exposed. Each recessed part 67 of the () may be formed at a position facing the lower side part 42. In this case, when a plane corresponding to the second contacted surface 58 is formed on the upper surface of the rear end of the lower side 42 and the actuator 60 is rotated to the locked position, the rear end of the lower side 52 The lock retaining surface 65 of the cam portion 63 is brought into contact with the first to-be-contacted surface 24 of the stepped portion 23 covering the upper portion of the portion.

In addition, the connection object may be other than FPC, for example, a flexible flat cable (FFC).

According to the present invention, since the cam part made of synthetic resin is greatly suppressed by the sliding motion of the contact made of metal, and then the sliding part is made with the insulator made of synthetic resin, it is possible to effectively suppress the cam part shaving even if the actuator is repeatedly rotated. It can hold the shape of a cam part. As a result, it is possible to prevent a drop in contact pressure (decrease in reliability) due to shaving of the cam portion and a decrease in workability such as a feeling of click, and the actuator can be reliably held in the non-locked position and the locked position.

Claims (4)

A plurality of first and second contacts, all made of a conductive metal material and alternately arranged in a row; An insulator made of a synthetic resin material which holds the first and second contacts and has an insertion hole into which a connection object is inserted; An actuator supported by the insulator to be rotatable between a non-locked position and a locked position; A connector having a synthetic resin cam portion formed at an end of the actuator on the insulator side to press the first and second contacts to contact the connection object when the actuator is rotated to the locked position. A first rotational contact surface is formed on one of the first contact and the second contact, Forming in the insulator a first to-be-contacted surface in which the first rotational contact surface is in rotational contact when the actuator rotates between the unlocked position and the locked position, On the part facing the other contact of the cam part, a recess is formed in which the bottom surface constitutes the opposite surface, And said second contact is formed with a second to-be-contacted surface which rotates relative to said opposing face without contacting when said actuator rotates between said non-locked position and said locked position vicinity. The method of claim 1, The first contacted surface is a flat surface, And the cam portion has a flat lock retaining surface in surface contact with the first to-be-contacted surface when the actuator is rotated to the locked position. The method according to claim 1 or 2, The second contacted surface is a flat surface, And the cam portion has a flat lock retaining surface which is in surface contact with the second to-be-contacted surface when the actuator is rotated to the locked position. The method of claim 3, wherein The connector which made the said 1st contact into the contact attached to the said insulator from the said insertion hole side, The connector which made the said 2nd contact into the said insulator from the opposite side to the said insertion hole.

Images