JPH1074544A - Quick-connection terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quick-connection terminal device for easily checking the connected condition of a wire. SOLUTION: An indicating member 20 is spring-energized counterclockwise by an elastic spring 23. An indicator 24 is stored in a case 1 when a wire is not connected. When the wire is inserted from a wire insertion hole 71 , the wire is held between each of a locking piece 511 and a contact piece 521 and a terminal piece 31. When the end of the wire thrusts the thrusted portion 21 of the indicating member 20 across a position where it is held between each of the locking piece 511 and the contact piece 521 and the terminal piece 31, the indicating member 20 which overcomes the spring energization of the elastic spring 23 is rotationally moved clockwise and the indicator 24 is exposed outside the case 1. As a result, the connected condition of the wire is easily judged by visibly recognizing the indicator 24 from the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quick-connect terminal device used for wiring equipment, breakers, and the like.

[0002]

2. Description of the Related Art Conventionally, screws have not been used for the purpose of facilitating the work of connecting electric wires to wiring devices, breakers, and the like, and ensuring uniformity of the connection state to ensure the reliability of the connection. A so-called quick connection terminal device that can be connected to the terminal is used. As such a quick connection terminal device, for example, an electric wire is inserted through an electric wire insertion hole formed in a case, and the electric wire is supported between a terminal plate provided in the case and a contact spring formed of a leaf spring. In some cases, an electric wire is electrically connected to a terminal plate.

[0003]

In the quick-connecting terminal device having the above-described structure, an operator is required to improve the electric connection between the electric wire inserted into the case through the electric wire insertion hole and the terminal plate. After inserting the wire into the case, pull the wire in the opposite direction, check the connection between the wire and the terminal board with the touch of your hand, and perform the connection work so that the connection is good, or The stripping margin of the wire so that the electrical connection with the terminal board is good is displayed in advance on the outer surface of the case, and the wire is inserted through the wire insertion hole into the case to the position where the coating is stripped. , Had connected the wires.

[0004] However, when the worker performs the connection work by the feel of the hand, there is a problem that the sense of each worker varies, and the connection state is not uniform. In addition, if the stripping amount of the wire coating is different from the amount indicated in the case, it takes time and effort to correct it, and it is insufficient as a means for checking whether the connection state is good or not. If the connection state is not good, there is also a problem that the electric wire is easily detached from the terminal plate.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to easily confirm the connection state of an electric wire and to improve the connection state. Another object of the present invention is to provide a quick-connecting terminal device that prevents a problem such as disconnection of an electric wire.

[0006]

According to the first aspect of the present invention, in order to achieve the above object, a case having an electric wire insertion hole through which an electric wire is inserted and an inner storage portion communicating with the electric wire insertion hole is provided. A terminal plate that is placed in the housing portion and is in contact and conduction with the conductor of the electric wire inserted through the electric wire insertion hole, a contact spring that biases the conductor in the terminal plate direction and clamps the conductor between the terminal plate, It has a pressed part pressed by the tip of the conductor, is urged to one side when the electric wire is not connected, and displays the unconnected state of the electric wire, and the electric wire conductor is inserted from the electric wire insertion hole, When the pressed part is pressed by the tip of the conductor beyond the pinch position where the tip of the conductor is pinched between the terminal plate and the contact spring, it moves to the other side by overcoming the biasing force to one side By doing so, the display member that displays the connection completion state of the electric wire Since Eteiru, the position of the display member, the connection state of the electric wire can be easily determined. Therefore, the connection operation can be performed while confirming the connection state of the electric wires by the display member, so that the connection state of the electric wires can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, when the conductor of the electric wire is inserted through the electric wire insertion hole, the portion of the conductor that comes into contact with the pressed portion gradually moves from the front end portion of the conductor to the side surface. Then, when the display member moves to a position where the connection completion state of the electric wire is displayed, the pressed portion is held in a state in contact with the side surface of the conductor, so the urging force of the display member is applied to the side surface of the conductor, Since it does not join in the direction that the wire comes out,
It is possible to make it difficult for the electric wire to come off.

According to a third aspect of the present invention, in the first aspect of the invention, when the electric wire is in one of the connection completed state and the connection uncompleted state, the electric wire is exposed outside the case and is visible from the outside. When the connection state of the electric wire is switched to the other state, it is stored in the case,
Since the display portion is provided on the display member and held in a state in which it is invisible from the outside, the connection state of the electric wires can be easily determined based on whether the display portion is visible or invisible.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the contact spring includes a lock piece that locks with the conductor of the electric wire,
On the display member, an operation unit that protrudes outside of the case and performs an operation of pulling out the electric wire, and from the position where the display member has moved from one side to the other side when the connection of the electric wire is completed, the operation unit is operated to change the display member. Further, since an unlocking portion is provided for pressing the locking piece in a direction to bend when the locking piece is moved in the same direction, the locking piece is locked with the conductor of the electric wire to prevent the wire from coming off. Can be. In addition, the electric wire can be easily pulled out by bending the lock piece using the unlocking portion.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the display member is rotatably attached to the case, and the rotation radius of the unlocking portion is shorter than the rotation radius of the operation portion. In addition, the operating force of the unlocking portion when pulling out the electric wire can be reduced. According to a sixth aspect of the present invention, in the first aspect of the present invention, a measurement terminal for measuring insulation resistance is provided on the terminal plate, and when the display member is on one side when the electric wire is not connected, the terminal is closed by the display member. The measurement terminal is not exposed to the outside, and when the display member moves to the other side when the connection of the wire is completed, an opening is provided in the case to expose the measurement terminal to the outside. The wire insertion hole through which the wire is inserted can be easily determined. When the electric wire connection is completed, the measurement pin can be inserted through the opening and the measurement pin can be brought into contact with the measurement terminal to measure the insulation resistance.

According to a seventh aspect of the present invention, in the first aspect of the present invention, an elastic spring piece having one end serving as a fixed end fixed to the display member and the other end serving as a free end contacting the case is formed integrally with the display member. Since the elastic spring piece urges the display member to one side, the number of components can be reduced by integrally forming the elastic spring piece with the display member.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the quick-connect terminal device of the present invention is applied to a breaker will be described with reference to FIGS. FIGS. 1 (a) as shown in ~ (c), breaker B is synthesized first and second cover 3 ₁ on both sides of the body 2 which is formed into a substantially box-shaped insulating material such as a resin, 3 ₂
And a contact opening / closing unit (not shown) having a conventionally well-known structure is provided inside the case 1. Then, on one of the ends in the longitudinal direction of the case 1, an input-side connecting terminals 60 ₁ consisting of screw terminals, 60 ₂ are provided, on the other hand, the output side connection consisting of fast imaging terminal device of the present invention A terminal portion A is provided. The structure and operation of the breaker B excluding the output connection terminal portion A according to the present invention are conventionally well-known,
The description and illustration are omitted because they are not the gist of the present invention.

FIG. 2 is an exploded perspective view of the output side connection terminal portion A. Side of the body first cover 3 ₁ is coupled 2
On the side surface (hereinafter, referred to as a left side surface), a display member storage recess 4 in which the display member 20 is stored, and a first terminal member 30 and a contact spring which communicate with the display member storage recess 4. first terminal portion housing recess 5 serving inner housing portion locking spring 50 ₁ is accommodated is provided. Further, an electric wire insertion hole ₇₁ which opens to the outside communicates with the first terminal portion housing recess 5,
Opening hole 8 communicating with display member storage recess 4 and opening to the outside
₁ is respectively provided on the coupling surface of the left side surface and the first cover 3 ₁ of the body 2.

On the other hand, a second cover to which the body 2 is connected
3_TwoThe side surface of the display member housing the display member 20 is
The storage recess 4 communicates with the display member storage recess 4 and a second
Terminal member 40 and lock spring 50 serving as a contact spring_TwoIs stored
A second terminal member storage recess 6 serving as an inner storage portion is provided.
And communicates with the second terminal member storage recess 6 to open to the outside.
Wire insertion hole 7_TwoCommunicating with the display member storage recess 4 and
Opening hole 8 opening at the part _TwoIs the second cover 3_TwoAnd body 2
And are provided on the coupling surfaces with the respective components.

The first and second terminal members 30, 40 have ends.
Terminal strips 31 and 41 serving as daughter boards are provided.
Lock spring 50 for 1 and 41₁, 50_TwoLock tab 5 provided on
1₁, 51_TwoAnd contact piece 52₁, 52_TwoAre facing each other
You. Lock Tab 51₁, 51_TwoAnd contact piece 52₁, 52
_TwoBend both ends of the strip of conductive material with elasticity
Center piece 53₁, 53_TwoAre formed at both ends. Chain lock
Piece 51₁, 51_TwoIs the central piece 53 ₁, 53_TwoLinking site with
And the first and second terminal members 30, 4
0, the terminal pieces 31 and 41 provided at
Touch piece 52₁, 52_TwoIs bent in a substantially S-shape. Center
Piece 53₁, 53_TwoAre formed in a plate shape, and the first and
The contact pieces 32 and 42 of the second terminal members 30 and 40
ing.

Also, the first and second terminal members 30, 40
Fixed contacts 34 and 44 are formed at the other end of the
Input side connection terminal 6 via contact opening / closing unit of B
0₁, 60_TwoIt is connected to the. In addition, the first and second
Terminal pieces 31 and 41 of the connection terminals 30 and 40 and the fixed contacts 3
Measuring terminals 33 and 43 are connected from the connecting portions with
Each of the measuring terminals 33 and 43 is provided with an opening 8₁,
8_TwoMeasurement pin (to be shown)
) For contact and conduction. That is, the book
In the embodiment, the measuring terminals 33 and 43 are formed in the opening 8.₁, 8_TwoWhen
Since it is disposed at the opposite position, the opening hole 8 ₁, 8_TwoTo
Easy contact of inserted measuring pins with measuring terminals 33 and 43
Conduction can be performed, and the insulation resistance can be measured.

The display member 20 is made of an insulating material such as a synthetic resin.
And the electric wire insertion hole 7₁, 7 _TwoFrom the power
Pressed part 21 pressed by the tip of the wire, and body
Rotating shaft that fits into the shaft hole 9a of the bearing portion 9 protruded into the inside 2
22 and a tip 23 a are formed on the outer peripheral surface of the bearing 9.
The connection between the elastic spring piece 23 locked in the locking recess 10 and the electric wire
Display part 24 for displaying the connection state, and an end of the display part 24
Operation unit 25 protruding from the surface and display using the operation unit 25
By rotating the member 20 clockwise in FIG.
The lock spring 50₁, 50_TwoTablet Lock Piece 51₁, 51_Two
To lock the lock piece 51.₁, 51_TwoTo the terminal strips 31, 41
And an unlocking portion 26 that bends away from the opening.
The rotation shaft 22 is inserted into the shaft hole 9a of the bearing portion 9, and the display member
20 is attached to the case 1 so as to be rotatable about a rotation shaft 22.
Is attached. Here, the tip 2 of the elastic spring piece 23
3a is a free end locked in the locking recess 10 of the bearing portion 9.
The display member 20 is rotated counterclockwise in FIG.
I'm biased. Further, the elastic spring piece 23 is connected to the display member 20.
The output side connection terminal portion A is formed integrally with the
The number of parts can be reduced and the size can be reduced.
You.

As shown in FIG. 1, when the electric wires are not connected, the display member 20 is spring-biased counterclockwise in the figure, and the display portion 24 is housed in the case 1. The display unit 24 cannot be visually recognized, and the display member 20 displays the incomplete connection state of the electric wires. Therefore, since the display unit 24 is invisible from the outside,
The operator can easily determine the disconnected state of the electric wire. In addition, since the display unit 24 is housed in the case 1 and closes the openings 8 ₁ and 8 ₂ , the operator can easily identify the wire insertion holes 7 ₁ and 7 ₂ through which the wires are inserted.
Also, when inserting the electric wire, the electric wire is erroneously inserted into the opening 8 ₁ ,
It can be prevented from insertion into 8 _2.

Next, when connecting the electric wires, FIG.
(A) as shown in ~ (c), when inserted through the wire insertion holes 7 _1, 7 ₂ from the wire 70 provided in the case 1, locking spring 50 _1, 50 ₂ of the locking pieces 51 _1, 51 ₂ And contact piece 5
2 _1, 52 and _2, between the terminal pieces 31, 41 of the first and second terminal members 30 and 40, the conductor 71 coated was peeled electric wire 70 is sandwiched, lock piece 51 _1, 51 The leading edge of the _second bites into the conductor 71 to prevent the wire 70 from falling off. Therefore, the electric wire insertion hole 7
_1, 7 ₂ by simply inserting the wire 70, together with electric wires 70 are held, is the electrical connection to the first and second terminal members 30 and 40 is made.

Here, the ends of the conductors 71 inserted through the electric wire insertion holes 7 ₁ and 7 ₂ are connected to the terminal pieces 31 and 41 and the lock pieces 5.
Beyond 1 _1, 51 ₂ and the contact piece 52 _1, 52 ₂ and the nip position of the presses the pressed portion 21 of the display member 20, the display member 20 overcomes the spring force of the elastic spring piece 23, FIG. At 3, it rotates clockwise about the rotation shaft 22. At this time, the display unit 24 of the display member 20 moves outward from the opening 11 of the case 1 and is exposed outside the case 1 to display a state in which the connection of the electric wire 70 is completed. Therefore, the operator can easily confirm that the electric wire 70 has been connected since the display unit 24 is visible. In addition, the worker can perform the connection work of the electric wire 70 while checking the connection state of the electric wire 70 by looking at the display unit 24, and can reliably connect the electric wire 70 to the terminal member 20. It is possible to prevent a problem such as dropout.

When connecting the electric wire 70, the conductor 71
When the conductor 71 is further inserted after the distal end of the conductor 71 contacts the pressed portion 21, the portion of the conductor 71 that contacts the pressed portion 21 gradually moves from the distal end of the conductor 71 to the side surface. Then, when the display member 20 moves to a position where the connection completion state of the electric wire 70 is displayed, the pressed portion 21 is held in a state of contacting the side surface of the conductor 71. At this time, since the spring biasing force of the display member 20 is applied to the side surface of the conductor 71 and is not applied in the direction in which the conductor 71 comes off, the conductor 71 becomes difficult to come off.

Further, the display section 24 of the display member 20 is
Since it has moved outward from the opening 11 of the
33 and 43 are exposed to the outside, and the measuring pins (not shown)
8) opening hole 8₁, 8_TwoFrom the case 1
By contacting the fixed terminals 33 and 43, the insulation resistance is reduced.
It can be easily measured. Next, the connected power
When the line 70 is removed, as shown in FIGS.
Next, the operator pulls the operation unit 25 in the clockwise direction in the figure.
The display member 20 is rotated clockwise in FIG.
When the unlocking portion 26 of the display member 20 is locked
Yeah 50₁, 50_TwoTablet Lock Piece 51₁, 51_TwoPress the chain
Lock 51₁, 51 _TwoTo separate the terminals from the terminal strips 31 and 41
The locking piece 51₁, 51_TwoIs conductor 71
Then, the electric wire 70 can be easily pulled out. So
Then, after the electric wire 70 is pulled out, the operator operates the operation unit 2.
5 is released, the display member 20
Rotated counterclockwise in the figure by the urging force
To return to the normal position and display the incomplete connection status.

[0023] Thus, by operating the operation unit 25, by deflecting in the direction of unlocking portion 26 is pulled away lock piece 51 _1, 51 ₂ from the terminal strip 31 and 41, easily wire 70
Can be pulled out. Here, the rotation radius of the unlocking portion 26, since shorter than turning radius of the operating section 25, required to deflect the locking pieces 51 _1, 51 ₂ with the unlocking portion 26 The force can be reduced, and the electric wire 70 can be easily pulled out.

In this embodiment, the quick-connecting terminal device of the present invention is applied to a breaker. However, the present invention is not intended to limit the application of the present invention to a breaker. Needless to say, it may be applied to Further, in the present embodiment, the lock spring is used as the contact spring, but it is needless to say that a leaf spring or a coil spring may be used instead of the lock spring.

[0025]

According to the first aspect of the present invention, as described above, a case having an electric wire insertion hole through which an electric wire is inserted, an inner storage portion communicating with the electric wire insertion hole, and a case accommodated in the inner storage portion. A terminal plate that makes contact and conduct with the conductor of the electric wire inserted through the electric wire insertion hole, a contact spring that urges the conductor in the terminal plate direction and clamps the conductor between the terminal plate, When the electric wire is not connected, it is urged to one side to display the incomplete connection state of the electric wire, the electric wire conductor is inserted through the electric wire insertion hole, and the end of the electric conductor is connected to the terminal plate. When the pressed portion is pressed by the tip of the conductor beyond the holding position held between the contact spring and the contact spring, it overcomes the biasing force to one side and moves to the other side,
Since the display device includes the display member for displaying the connection completion state of the electric wire, the connection state of the electric wire can be easily determined based on the position of the display member. Therefore, since the connection operation can be performed while confirming the connection state of the electric wires by the display member, the connection state of the electric wires can be improved, and the electric wires can be hardly pulled out.

According to a second aspect of the present invention, when the conductor of the electric wire is inserted through the electric wire insertion hole, the portion of the conductor that comes into contact with the pressed portion gradually moves from the front end portion of the conductor to the side surface, and the display member is connected to the electric wire. When it moves to the position where the connection completion state is displayed, the pressed part is held in a state in contact with the side surface of the conductor, and the urging force of the display member is applied to the side surface of the conductor, and is not applied in a direction in which the electric wire is pulled out. This has the effect of making it difficult for the wires to come off.

According to a third aspect of the present invention, when the electric wire is in one of the connection completed state and the connection non-completion state, the electric wire is exposed to the outside of the case and held in a state that can be visually recognized from the outside. When the connection state is switched to the other state, the display member is provided in the display member, which is housed in the case and held in a state that is invisible from the outside. Accordingly, there is an effect that the connection state of the electric wire can be easily determined.

According to a fourth aspect of the present invention, a contact spring includes a locking piece that locks with a conductor of an electric wire, and a display member protrudes outside the case to perform an operation of pulling out the electric wire; When the display member is moved from one side to the other side at the time of completion, the operating portion is operated, and when the display member is further moved in the same direction, an unlocking portion that presses in a direction to bend the locking piece. Since the locking piece is provided, the locking piece is locked with the conductor of the electric wire, so that the electric wire can be prevented from coming off. In addition, there is also an effect that the electric wire can be easily pulled out by bending the lock piece using the unlocking portion.

According to a fifth aspect of the present invention, the display member is rotatably attached to the case, the turning radius of the unlocking portion is shorter than the turning radius of the operation portion, and the unlocking when the electric wire is pulled out. Since the operation force of the section can be weakened, there is an effect that the work of pulling out the electric wire becomes easy. According to a sixth aspect of the present invention, a measurement terminal for measuring insulation resistance is provided on the terminal plate, and when the display member is on one side when the electric wire is not connected, the terminal is closed by the display member and the measurement terminal is exposed to the outside. When the display member moves to the other side when the connection of the electric wire is completed, an opening for exposing the measurement terminal to the outside is provided in the case, so when the electric wire is not connected, the opening is closed by the display member. In addition, there is an effect that the wire insertion hole through which the wire is inserted can be easily determined. In addition, when the connection of the electric wires is completed, there is also an effect that the measurement pin can be inserted through the opening hole, the measurement pin can be brought into contact with the measurement terminal, and the insulation resistance can be measured.

According to a seventh aspect of the present invention, an elastic spring piece having one end serving as a fixed end fixed to the display member and the other end serving as a free end abutting on the case is integrally formed with the display member, and the elastic spring piece is displayed. Since the member is spring-biased to one side, the number of components can be reduced and the size can be reduced by integrally forming the elastic spring piece with the display member.

[Brief description of the drawings]

FIGS. 1A and 1B show a quick-connecting terminal device of the present embodiment, in which FIG. 1A is a partially cutaway sectional view, FIG. 1B is a side view, and FIG.

FIG. 2 is an exploded perspective view of a main part of the above.

3A and 3B show a connection completed state of the above, wherein FIG. 3A is a partially cutaway sectional view, FIG. 3B is a side view, and FIG. 3C is a bottom view.

4A and 4B show a state when the electric wire is pulled out, in which FIG. 4A is a partially cutaway sectional view, FIG. 4B is a side view, and FIG. 4C is a bottom view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Case 7 ₁ Wire insertion hole 20 Display member 21 Pressed part 23 Elastic spring piece 24 Display part 31 Terminal piece 51 ₁ Locking piece 52 ₁ Contact piece

Continued on the front page (72) Inventor Takanobu Tanaka 1048 Kazumasa Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. Inventor Yasushi Matsui 1048 Kadoma Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Works, Ltd.

Claims (7)

[Claims] A case having an electric wire insertion hole through which an electric wire is inserted, and an inner storage portion communicating with the electric wire insertion hole;
A terminal plate that is housed in the inner storage portion and that is in contact with and conductive to a conductor of an electric wire inserted through the electric wire insertion hole; and that the conductor is biased in the direction of the terminal plate so that the conductor is in contact with the terminal plate. Having a pressed portion pressed by the tip of the conductor, and being urged to one side when the electric wire is not connected, to display an unconnected state of the electric wire,
The conductor of the electric wire is inserted through the electric wire insertion hole, and the tip of the conductor exceeds the pinching position where the tip of the conductor is pinched between the terminal plate and the contact spring, and the pressed portion is pressed against the tip of the conductor. A quick-connect terminal device, comprising: a display member for displaying a connection completed state by overcoming the biasing force to one side and moving to the other side. 2. When a conductor of an electric wire is inserted through the electric wire insertion hole, a portion of the conductor abutting on the pressed portion gradually moves from a front end portion of the conductor to a side surface, and the display member is moved. 2. The quick-connect terminal device according to claim 1, wherein when the wire is moved to a position where the connection completion state of the electric wire is displayed, the pressed portion is held in a state in which it is in contact with the side surface of the conductor. 3. When the electric wire is in one of a connection completed state and a connection uncompleted state, the electric wire is exposed to the outside of the case and held in a state that can be visually recognized from the outside, and the connection of the electric wire is performed. When the state switches to the other state,
The quick-connect terminal device according to claim 1, wherein a display unit housed in the case and held in a state invisible from the outside is provided on the display member. 4. An operation section for projecting outside of the case to perform an operation of pulling out an electric wire, wherein the contact spring includes a lock piece that locks with a conductor of the electric wire, From the position where the display member has moved from one side to the other side, operating the operation unit, when the display member is further moved in the same direction, an unlocking unit that presses in the direction to bend the lock pieces. 2. The quick-connect terminal device according to claim 1, further comprising: 5. The speed as set forth in claim 4, wherein said display member is rotatably attached to said case, and a turning radius of said unlocking portion is shorter than a turning radius of said operation portion. Termination device. 6. A terminal for measuring insulation resistance is provided on the terminal plate, and when the display member is on one side when an electric wire is not connected, the terminal is shielded by the display member and the measurement terminal is exposed to the outside. 2. The quick-connecting terminal device according to claim 1, wherein an opening for exposing the measuring terminal to the outside is provided in the case when the display member moves to the other side when the connection of the electric wire is completed. 7. An elastic spring piece having one end serving as a fixed end fixed to the display member and the other end serving as a free end abutting on the case is formed integrally with the display member, and the elastic spring piece is provided on the display member. The quick-connect terminal device according to claim 1, wherein the member is biased to one side by a spring.