JPS647583Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crimp spring in a conductor connector used for connecting and holding electric wires such as a terminal block.

As a conductor connector for connecting and holding electric wires such as terminal blocks to conductive plates, in order to simplify the installation of the electric wires, the conductor is exposed from the end of the electric wire, and this conductor is inserted through the electric wire insertion hole, and the conductor is operated. Various devices have been devised in which a compression spring is pressed into contact with a conductive wire by a piece, and the conductive wire is brought into elastic contact with the conductive plate.

The object of the present invention is to provide a crimp spring that minimizes tilting resistance until just before the electric wire is clamped by the crimp spring, so that the movement of the actuating piece is facilitated, and that the holding force is strong in the clamping state. (a) A flexure made of a plate spring material, in which an angular conductor crimping part that clamps the conductor is formed by standing up from a base that is held so as not to be tilted, and a locking part is provided at the end thereof. a flexible plate; (b) rotatably supported by a locking portion of the flexible plate;
a pressure bonding plate that hangs downward from the support portion along the back surface of the flexible plate, and has its lower end in contact with the top of the flexible plate while the crimp portion of the flexible plate is in pressure contact with the conductor; a holding member that holds the pressure plate in a floating position centered on the locking portion and spaced apart from the pressure bonding portion until the pressure bonding portion is in pressure contact with the pressure bonding portion; an actuating piece that presses the plate to tilt the bending plate toward the conductive plate, and as the press plate moves due to the pressure of the actuating piece, the bending plate is tilted about the base as a fulcrum; The conductor is crimped to the conductive plate by the conductor crimping section, and during the tilting, the press-contact plate is kept in a floating state by the holding member to reduce the resistance of the tilting operation by the operating piece, and the holding action of the holding member is activated immediately before the end of crimping. As a countermeasure, the lower end of the hanging part is in contact with the bending plate, the conductor crimping part is made into a closed triangular shape to prevent it from expanding, and the steel of the crimping part is increased to strengthen the conductor holding. This is what I did.

A first embodiment of the present invention will be described with reference to FIGS. 1 and 2.

Referring to FIG. 1, reference numeral 1 denotes a plate-shaped terminal block made of synthetic resin, the bottom surface of which is connected to a rail x, and a large number of terminal blocks are successively assembled onto the rail x. The terminal block 1 is provided with two left and right storage gaps 3, 3 partitioned by a partition wall 2 on one side thereof.

On the upper surface of the peripheral wall 4 surrounding the storage gaps 3, 3 from below, there is mounted a conductive plate 5 having inclined portions 7, 7 on both sides of which are inclined upward in the expansion direction, and the horizontal portion 6 of the conductive plate 5 is mounted.
is fitted between the lower end of the partition wall 2 and the peripheral wall 4. An insertion hole 4a is formed in the side of the peripheral wall 4, through which a terminal of a tester can be inserted and connected to the conductive plate 5.

Further, an upper wall 8 is formed at the upper part of the storage gaps 3, 3, and an insertion opening 9 is provided between the upper end of the peripheral wall 4 and the outer end of the upper wall 8, and communicates with the upper surface of the inclined portion 7 of the conductive plate 5. Furthermore, an inlet 10 is provided between the upper end of the partition wall 2 and the inner side of the upper wall 8, through which an actuating piece 26 (to be described later) passes.

The lower surface of the upper wall 8 is formed with a receiving surface 14 that is perpendicular to the insertion opening 9 and a holding surface 15 that is inclined slightly upwardly inside the receiving surface 14 . The holding surface 15
constitutes the holding member of the present invention together with the contact guide piece 24 described later.

A compression spring made up of the bending plate 17 and the compression plate 23 is housed in the storage gaps 3, 3. Here, the bending plate 17 is made of a leaf spring material, and its base 18 is tightly fitted between the conductive plate 5 and the lower end of the partition wall 2 and held immovably, and is bent upwardly from the base 18. In a state in which no pressure is applied, which will be described later, it maintains the position shown in FIG. 1 and is spaced apart corresponding to the conductive plate 5. The bending plate 17 has an angular conducting wire crimping part 19 bent near its base 18, and a locking part 20 is provided in a U-shaped curve on the outside thereof, and the curved end is coated and crimped. Section 21.

On the back of the bending plate 17, there is a pressure contact plate 23 whose upper end is curved at approximately 90 degrees, a straight contact guide piece 24 is formed at the end, and the entire body is slightly curved inward.
is arranged, and the contact guide piece 24 is connected to the locking part 20.
By hanging it on the bending plate 17, it is suspended along the back surface of the bending plate 17 at the position shown in FIG.

Furthermore, an actuating piece 26 is provided on the back of the pressure contact plate 23 along the partition wall 2 so as to be movable up and down, and a cam surface 28 on the lower surface of a pressing portion 27 formed at the lower end of the pressure member 26 that bulges outward is attached to the back surface of the pressure contact plate 23. Due to the restoring elasticity of the bending plate 17, the engaging jaw 29 at the upper end of the pressing part 27 comes into contact with the locking surface 30 formed on the side of the passage port 10 of the upper wall 8 and is held in its position. ing. An operating rod 31 is attached to the operating piece 26 and is attached to the partition wall 2.
Saw teeth 32 formed along the inner surface of the
The bending plate 1 is attached to the engaging teeth 33 formed on the upper end of the partition wall 2.
It can be latched and held in an appropriate position by the restoring elasticity of 7, and by slightly tilting the operating rod 31 outward, the engagement is released and it becomes possible to move up and down.

The holding of the electric wire a in the terminal block 1 will now be described.

As shown on the left in FIG. 1, the electric wire a is inserted through the insertion opening 9, and the conductive wire b is placed on the conductive plate 5 along the inclined portion 7.

Then, as shown in FIG. 2, the actuating piece 26 is lowered against the biasing force of the bending plate 17, and the cam surface 28 of the pressing part 27 presses the pressing plate 23, and as the amount of the lowering increases, Increase the amount of pressure. At this time, since the contact guide piece 24 is in contact with the holding surface 15, the pressure contact plate 23 moves forward while being prevented from tilting, and transmits the pressing force to the bending plate 17, thereby causing the bending plate 17 to bend. The plate 17 is tilted about the base 18 as a fulcrum.

During this tilting movement, the lower end of the pressure contact plate 23
Since the operating piece 26 is separated from the flexible plate 17, the tilting operation of the operating piece 26 can be performed smoothly without resistance.

As a result, the conductor crimping part 19 first comes into contact with the conductor b and presses it against the inclined part 12, electrically connecting the conductor b and the conductive plate 10, and using the contact end of the conductor crimping part 19 as a fulcrum. The U-shaped curve is bent, and the covering crimping part 21 is made of synthetic resin covering c.
contact with the Just before the end of the clamping operation by the bending plate 17, the contact guide piece 24 escapes from the holding surface 15, releases its contact, and comes into contact with the receiving surface 14 on the lower surface of the upper wall 8. , the pressure contact plate 23 rapidly tilts around the locking portion 20 to the position shown in FIG.

With the conducting wire b being held between them, the lower end of the pressure contact plate 23 comes into contact with the vicinity of the bent portion of the angular conducting wire crimping portion 19. Therefore, the crimping part 19 is formed in a closed triangular shape, and even if the crimping part 19 is strongly pressed against the conductor b side by the pressing force of the actuating piece 26 due to contact with the lower end of the pressing plate 23, It is difficult to expand and is prevented from bending, and therefore the crimp portion 19 is given steel properties and can be sufficiently pressurized to firmly hold the conductor.

In the contact state, the actuating piece 26 is immovably locked by engagement between the saw teeth 32 on the inner surface of the actuating rod 31 and the partition wall 2a, thereby ensuring that the conducting wire b is held in place.

In the embodiment described above, when the operating rod 31 is tilted to release the engagement with the partition wall 2a, the contact guide piece 24 of the pressure contact plate 23 comes into contact with the holding surface 15 again due to the return movement of the bending plate 17. Therefore, the pressing plate 23 in contact with the pressing portion 27 rapidly tilts, kicking up the actuating plate 15a and returning it to the state shown in FIG.

FIG. 3 shows a second embodiment of the present invention, in which the pressure contact plate 2
The holding member for maintaining the floating state of No. 3 is replaced with the holding surface 15 and the contact guide piece 24 of the above embodiment, and
0, and to explain this structure, a square conductor crimping part 19a is bent and formed on the bending plate 17a in the storage gaps 3, 3, and a connecting pin is provided at the end of the bending plate 17a. Then, attach this to the locking part 20a.
It is said that A pressure contact plate 23a is suspended from the back of the bending plate 17a by being rotatably supported by a connecting pin of the locking portion 20a, and the spring is connected between the pressure contact plate 23a and the bending plate 17a. 40 is interposed.

To explain its operation, when the pressure contact plate 23a is pressed with the actuation piece 26, the spring 40 is interposed between the pressure contact plate 23a and the bending plate 17a, and the biasing force is applied to the base 18a of the bending plate 17a. Since it is stronger than the restoring elasticity with the fulcrum at
a gently tilts around the base 18a as a fulcrum. Later, when the tip of the conductor crimping portion 19a of the bending plate 23a contacts the conductor b and the tilting of the bending plate 23a is prevented, the spring 40 is resisted by the pressing force of the actuating piece 26a, The pressure contact plate 23a is connected to the locking portion 20.
It tilts using the connecting pin a as a fulcrum, and its lower end contacts the vicinity of the bent portion of the wire crimping portion 19a, thereby forming the wire crimping portion 19a into a closed triangular shape to increase its holding force.

FIG. 4 shows a third embodiment of the present invention, in which a bending plate 17b and a pressure contact plate 23b are formed by bending a single leaf spring, and the base 18
The square conductor crimping part 19b is made to stand up from b.
A bending plate 17b is formed by bending the bending plate 17b, and the end thereof is bent outward 41 and placed along the back of the bending plate 17b to form a pressure contact plate 23b, In the bending plate 41, a spring action stronger than the restoring elasticity with the base 18a of the bending plate 17a as a fulcrum is generated, thereby making the bending part serve as a holding member that holds the pressure contact plate 23a at the floating position. It is something.

To briefly explain the operation of this embodiment, the actuating piece 2
6, the bending portion 41 is bent by the bending plate 17a.
Since a spring action stronger than the restoring elasticity with the base 18a as the fulcrum is generated, the bending plate 17b swings with the base 18b as the fulcrum while being maintained apart from the lower end of the pressure contact plate 23b, and the flexure plate 17b swings around the base 18b as the fulcrum. When the tip contacts the conducting wire b and the tilting of the bending plate 23 is prevented, the pressing plate 23b resists the urging force of the bending portion 41 due to the pressing force of the actuating piece 26, and presses its lower end into the conducting wire crimping portion. The conductive wire crimping portion 19b is in contact with the vicinity of the bent portion of the conductive wire 19b to form a closed triangular shape, thereby preventing the conductive wire from bending and increasing the conductive wire holding force.

As clarified by the description of the above embodiments, the present invention has an angular conductor crimping portion 1 that clamps the conductor b.
The locking portion 20 of the bending plate 17 formed by the
The pressure contact plate 23 is rotatably supported by the holding member 1.
5, 40, and 41 to separate the lower end of the pressure contact plate 23 from the bending plate 17, and after the pressure bonding portion 19 comes into contact with the conductor b by the pressure of the actuation piece 26, the lower end is separated by the pressing force of the actuation piece 26. Since it is brought into contact with the bending plate 17, during the tilting of the bending plate 17 about the base 18, the holding operation by the operating piece 26 can be performed smoothly with minimum tilting resistance. Further, just before the end of the crimping, the lower end contacts the crimped portion 19 to increase its steel properties,
It has excellent effects such as strengthening the wire retention.

[Brief explanation of the drawing]

The attached drawings show embodiments of the present invention; FIG. 1 is a front view of the terminal block 1 of the first embodiment, FIG. 2 is a front view of the same side in an operating state, and FIG. 3 is a front view of the terminal block 1 of the second embodiment. FIG. 4 is a front view showing the outline of the third embodiment. DESCRIPTION OF SYMBOLS 1... Terminal block, 2... Partition wall, 3... Storage gap, 5... Conductive plate, 15... Holding surface, 17, 17a, 17b... Flexible plate, 19, 19a, 19b... Crimp part, 23, 2
3a, 23b...pressure plate, 24...contact guide piece, 26
... Actuation piece, 40... Spring, 41... Bent part, a... Electric wire, b... Conductor.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) An angular conductor crimping part that is made of a plate spring material and that clamps the conductor is formed upright from a base that is held so as not to be tiltable, and a locking part is provided at the end thereof. (b) rotatably supported by a locking portion of the flexible plate;
a pressure bonding plate that hangs downward from the support portion along the back surface of the flexible plate, and has its lower end in contact with the top of the flexible plate while the crimp portion of the flexible plate is in pressure contact with the conductor; (c) the crimp plate; a holding member that holds the pressure plate in a floating position centered on the locking portion and spaced apart from the pressure bonding portion until the pressure bonding portion is in pressure contact with the pressure bonding portion; and an actuating piece that presses the plate to tilt the bending plate toward the conductive plate, and as the press plate moves due to the pressure of the actuating piece, the bending plate is tilted about the base as a fulcrum to tilt the bending plate toward the conductive plate. Crimp the conductor to the conductive plate using the conductor crimping section,
1. A crimp spring in a conductor connector, characterized in that, just before the crimp ends, the holding action of the retaining member is disabled so that the lower end of the hanging portion comes into contact with a bending plate.