JP3534898B2 - Quick connection terminal device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quick connection terminal device.

[0002]

2. Description of the Related Art A first conventional example is shown in FIG. That is,
This quick-connect terminal device includes a body 73 having an electric wire insertion hole 70, a terminal housing portion 71, and a release button hole 72 that communicate with each other,
A locking spring 74 that locks an electric wire (not shown) stored in the terminal storage portion 71 and inserted through the electric wire insertion hole 70, and a release button that is stored in the release button hole 72 and presses the locking spring 74. 75 and. Reference numeral 76 is a conductive plate that supports the locking spring 74.

When the electric wire is inserted through the electric wire insertion hole 70 and gets over the locking spring 74, the locking spring 74 is locked to the electric wire to prevent the electric wire from being pulled out. When the release button 72 is pushed in this state, the lock spring 74 operates in the release direction and the electric wire can be pulled out. A second conventional example is shown in FIG. That is,
In this quick-connect terminal device, the release button 75 is formed small enough to fit in the release button hole 72, and the driver 77 is attached to the release button hole 7.
2 and push it between the inner surface of the release button hole 72 and the release button 75, so that the release button 75 causes the locking spring 7 to move.
I try to press 4.

A third conventional example is shown in FIG. That is, in this quick-connect terminal device, the base end of the locking spring 74 is connected to the conductive plate 76 to form a fulcrum 78, and the release button 75 is integrally formed at the tip of the locking spring 74. Since the distance from the fulcrum portion 78 to the release button 75 is longer than the distance from the fulcrum portion 78 to the locking spring 74, the releasing operation can be performed with a light force.
80 is an electric wire to be inserted.

[0005]

However, in the first conventional example, the release button 75 requires a large release operation force, and a crack 80 is formed at a position where the release button 75 contacts the edge of the locking spring 74. There was a risk of cracking or chipping. Therefore, the release button 75 is required to be made of a material having a high surface hardness that does not break at the edge of the locking spring 74.

In the second conventional example, a crack 81 is formed in the body 73 when the release button 75 is pressed against the locking spring 74 by pushing the driver 77. For this reason, the body 73 is required to have a thickness that does not crack, and the body is increased in size. In the third conventional example, an insulating button for not directly touching the release button 75 was necessary. In addition, the terminal structure is complicated and the cost is high. Further, since the stroke of the force point required to move the action portion is long, the terminal shape becomes large in consideration of the fatigue.

Therefore, an object of the present invention is to provide a quick-connect terminal in which the releasing operation force is small, the workability is good, the occurrence of cracks can be prevented, the structure is simple and downsized, and the insulating button is not separately required. It is to provide a device.

[0008]

According to a first aspect of the present invention, there is provided a quick-connect terminal device having a body having a wire insertion hole, a terminal housing portion and a release button hole communicating with each other, and the wire insertion hole housed in the terminal housing portion. A locking spring that locks the inserted electric wire, and a fulcrum part that is supported by the inner surface of the body and that has an operating part exposed from the release button hole, and pushes the operating part with the fulcrum part as a fulcrum. A release button housed in the release button hole having an action portion for pressing the locking spring in the release direction, the body has an opening, and the release button hole is provided.
Has a cover that closes the opening, and the cover is attached
It is attached in contact with the member, and the release button has the fulcrum
The lock spring is supported by the inner surface of the cover and is set with respect to the lock spring such that the pressing direction of the acting portion is the releasing operation direction of the lock spring.
Is bent inward so that the bent part
It is characterized in that it is located near the fulcrum portion .

According to a second aspect of the present invention, in the first aspect, the pressing direction of the acting portion is the releasing operation direction of the locking spring so that the electric wire can be pulled out and the locking spring is pressed. It is the time when it is in the state of being.

[0010]

According to the fast connecting terminal device of the present invention, since the release button has the operating portion, the fulcrum portion and the operating portion, the operating force of the operating portion can be operated with a light operating force by the principle of leverage. , Good light release operability can be obtained and workability is improved. Further, since the action portion can be brought into contact with the flat surface portion of the locking spring, there is no fear that the release button is cracked or chipped due to the edge of the locking spring. Therefore, the release button can be made of a material having low surface hardness. Materials can be used, cost can be reduced, and quality can be improved. In addition, the structure is simpler and smaller than conventional ones, and no separate insulating button is required. Furthermore, because the release button is set for the lock spring so that the pressing direction of the action part is the unlocking movement direction of the lock spring, compare with the case of inclining the lock spring and applying the release operation force. As a result, the dispersion of the force applied during the release operation is reduced, and the workability can be improved.

According to the second aspect of the quick-connect terminal device, in the first aspect, the pressing direction of the acting portion is the releasing operation direction of the locking spring so that the electric wire can be pulled out. In addition to the action of claim 1, in the state of pressing the wire, the releasing operation force can be applied orthogonally to the locking spring in the electric wire withdrawing state in which the greatest force is applied in the releasing operation. , The force applied at the time of the releasing operation can be used without waste, and the workability can be further improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. That is, this quick-connect terminal device has a body 1
And a lock spring 2 and a release button 3. Body 1 is
It has an electric wire insertion hole 4, a terminal accommodating portion 5 and a release button hole 6 which communicate with each other. The body 1 of the embodiment is a resin-made cylindrical socket main body having a partition wall 32 at the center. One side of the partition wall 32 is an insertion port for a lamp base, and an internal thread portion 22 into which a lamp base (not shown) is screwed is provided. The other side of the partition wall 32 has a terminal accommodating portion 5, and the opening 7 is closed by a resin cover 8 having elasticity. This cover 8
The release button hole 6 and the wire insertion hole 4 are formed in the
The claw 20 is integrally provided, and the cover 8 is fixed by locking the claw 20 in a recess 21 formed in the body 1 by resin elasticity. The cover 8 may be attached to the body 1 by elastically deforming the body 1 side. Further, the hollow cylindrical portion 9 is projected from the partition wall 32 so as to approach the back surface of the cover 8, and a screw insertion hole 9a is formed at the tip. The body 1 abuts the mounting member 11 with the outer surface of the cover 8 as a mounting surface, and the mounting screw 13 is inserted into the tubular portion 9 from the lamp base insertion opening side of the partition wall 32, and is inserted into the screw insertion hole 9a to further cover the cover. Through the insertion hole 10 formed in 8,
The cover 8 is clamped between the body 1 and the mounting member 11 by tightening the screw holes 12 formed in the mounting member 11, and the body 1 is mounted on the mounting member 11. Reference numeral 23 is a side contact piece with which the side electrode of the lamp base contacts, and 24 is a central contact piece with which the center electrode of the lamp base contacts.

The locking spring 2 locks the electric wire housed in the terminal housing portion 5 and inserted through the electric wire insertion hole 4. In the locking spring 2 of the embodiment, one end of the strip is bent so as to incline inward, and the other end of the strip is bent inward in a Z shape to form the conductive portion 15, and the whole is formed. It is surrounded by a conductive plate 14.
A pair of locking springs 2 are provided and individually connected to the side contact piece 23 and the central contact piece 24. The electric wire inserted through the electric wire insertion hole 4 enters between the conductive plate 14 and the tip of the locking spring 2, and when it gets over the locking spring 2, the tip of the locking spring 2 bites into the electric wire, so that the electric wire is opposite. It cannot move in the opposite direction and is retained.

The release button 3 has an operation portion 16 exposed from the release button hole 6 and a fulcrum portion 17 supported on the inner surface of the body 1.
It has an action portion 18 that pushes the lock spring 2 in the releasing direction by pushing the operating portion 16 around the fulcrum portion 17 as a fulcrum, and is housed in the release button hole 6. The release button of the embodiment is substantially T-shaped as shown in FIG. 2, one end of the T-shaped shoulder portion is the fulcrum portion 17, the other end is the operation portion 16, and the end portions of the leg portions are The acting portion 18 is used. The operation portion 16 has a groove 16a formed therein so that the tip of the driver can be engaged with the groove 16a to facilitate the releasing operation. Further, the mounting member 11 is provided with a hole 27 aligned with the release button hole 6, and the operation portion 16
Is slightly protruded from the hole 27 so that the surface of the operating portion 16 is substantially flush with the surface of the mounting member 11 when the wire is inserted. The fulcrum portion 17 abuts against and is supported by the inner surface of the cover 8. Further, the action portion 18 is formed to be long in the direction perpendicular to the rotation direction so that the locking springs 2 of different polarities (only one is shown) can be released at the same time, and the sliding action of the action portion 18 on the locking spring 2 is made. The contact surface is formed into a curved surface having an arc shape as an example. The action portion 18 abuts on the flat surface portion of the locking spring 2, but presses the leg length L of the release button 3 having a substantially T-shape so as to press the flat surface portion perpendicularly, that is, in the releasing direction of the locking spring 2. It is set. That is, the longer the leg length L is, as shown in FIG. 3A, the longer the leg length L is, as shown in FIG. 3B, the more the pressing direction of the action portion 18 approaches the horizontal direction. The pressing direction B of the action portion 18 can be matched with the releasing direction of 2. In particular, the largest release operation force is required in the state where the lock spring 2 can be pushed to pull out the electric wire, and it is preferable that the pressing direction of the action portion 18 coincides with the release direction at this position. 21 is a reinforcing rib that extends between the fulcrum portion 17 and the action portion 18,
A crack is prevented when a force is applied to the operation portion 18.

When the operating portion 16 of the release button 3 is pressed in the direction of arrow D, an operating force acts in the direction of arrow A, the operating portion 18 comes into contact with the locking spring 2 and a force is applied, and the fulcrum 17 Rotates in the direction of arrow C and abuts against and is supported by the inner surface of the cover 8. When force is further applied to the operation portion 16, the cover 8
The release button 3 rotates around a fulcrum 17 supported by the fulcrum, and the lock spring 2 is pressed in the release direction by the force of the action portion 18 in the pressing direction B, and the lock spring 2 is elastically deformed to cause the electric wire Release the retainer. In this case, the distance from the fulcrum portion 17 to the operating portion 16 is made larger than the distance from the fulcrum portion 17 to the operating portion 18, increasing the force applied to the operating portion 18 and reducing the operating force of the operating portion 16. There is.

According to this embodiment, the release button 3 is operated by the operation unit 1.
6. Since the fulcrum portion 17 and the action portion 18 are provided, the action force of the action portion 18 can be operated by a light operation force by the lever principle, and thus a good light release operability can be obtained and workability is improved. improves. In addition, the action portion 18 is connected to the locking spring 2
Since the release button 3 can be brought into contact with the flat surface of the release button 3, there is no risk of cracking or chipping of the release button 3 due to the edge of the locking spring 2 as in the conventional case. Therefore, since the release button 3 can use a material having low surface hardness, Various materials can be used, cost can be reduced, and quality can be improved. In addition, the structure is simpler and smaller than conventional ones, and no separate insulating button is required.

Further, since the release button 3 is set for the lock spring 2 so that the pressing direction of the action portion 18 is the release operation direction of the lock spring 2, the lock spring 2 is tilted. Compared with the case where the release operation force is applied, the force applied during the release operation is less dispersed, and the workability can be improved.
Further, the pressing direction of the action portion 18 becomes the releasing operation direction of the locking spring 2 when the locking spring 2 is pressed so that the electric wire can be pulled out, and therefore when the largest force is applied in the releasing operation. Since a releasing operation force can be applied orthogonally to the locking spring 2 in a certain electric wire pulling-out state, the force applied during the releasing operation can be used without waste, and the workability can be further improved.

[0018]

According to the quick connecting terminal device of the present invention, since the release button has the operating portion, the fulcrum portion and the operating portion, the operating force of the operating portion can be operated with a light operating force by the principle of leverage. As a result, good light release operability can be obtained and workability is improved. Further, since the action portion can be brought into contact with the flat surface portion of the locking spring, there is no fear that the release button is cracked or chipped due to the edge of the locking spring. Therefore, the release button can be made of a material having low surface hardness. Materials can be used, cost can be reduced, and quality can be improved. In addition, the structure is simpler and smaller than conventional ones, and no separate insulating button is required. Furthermore, because the release button is set for the lock spring so that the pressing direction of the action part is the unlocking movement direction of the lock spring, compare with the case of inclining the lock spring and applying the release operation force. As a result, the dispersion of the force applied during the releasing operation is reduced, and the workability can be improved.

According to the quick-connect terminal device of the second aspect, in the first aspect, the pressing direction of the acting portion is the releasing operation direction of the locking spring, and the locking spring allows the electric wire to be pulled out. In addition to the effect of claim 1, the releasing operation force can be applied orthogonally to the lock spring in the electric wire withdrawing state in which the greatest force is applied during the releasing operation. , The force applied at the time of the releasing operation can be used without waste, and the workability can be further improved.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view of a release button.

FIG. 3 is an explanatory diagram illustrating a pressing direction of an operation portion of a release button.

FIG. 4 is a cross-sectional view of a first conventional example.

FIG. 5 is a cross-sectional view of a second conventional example.

FIG. 6 is a perspective view of a main part of a third conventional example.

[Explanation of symbols]

1 body 2 locking spring 3 Release button 4 Wire insertion hole 5 terminal storage 16 Operation part 17 fulcrum 18 Action part

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-160172 (JP, A) JP-A-54-142589 (JP, A) Actual flat 4-69871 (JP, U) Actual flat 4- 121664 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01R 4/48

Claims (2)

(57) [Claims] 1. A body having a wire insertion hole, a terminal housing portion and a release button hole communicating with each other, and a locking spring for locking the wire housed in the terminal housing portion and inserted through the wire insertion hole. An operating portion that has an operating portion exposed from the release button hole, has a fulcrum portion supported on the inner surface of the body, and presses the operating portion with the fulcrum portion as a fulcrum to press the locking spring in the releasing direction. And a release button housed in the release button hole, the body has an opening, and the release button hole has the release button hole.
It has a cover that closes the mouth, and the cover contacts the mounting member.
The release button is attached to the inner surface of the cover.
Is, as the pressing direction of the working portion is releasing operation direction of the locking spring, is set against the locking spring, further the locking spring is inclined inwardly at one end of the strip
Bent, and the bent part is located near the fulcrum part
A quick-connect terminal device characterized in that 2. The quick-setting according to claim 1, wherein the pressing direction of the acting portion becomes the releasing operation direction of the locking spring when the locking spring is pressed so that the electric wire can be pulled out. Terminal device.