JPS6344951Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a terminal block that connects each electric wire as an end treatment of the electric wire, and more particularly to a terminal block that facilitates fixing of a connecting terminal attached to the tip of a conductor wire to a connecting seat.

In the conventional terminal block a, as shown in FIG. 1, a conductive plate d is mounted in the left-right direction across a partition wall c on support parts b formed on the left and right sides, and the terminal block is divided by the partition wall c. The left and right parts of the conductive plate d are used as connection seats e and e, and a connection terminal y in the shape of a ring or the like is fixed to the tip of the conductor x by crossing the insertion hole f of the conductive plate d to the connection seats e and e. A fixing bolt g is screwed through the fitting hole z and the insertion hole f of the connecting terminal y through the washer from above, and the connecting terminal y is held between the conductive plate d and the washer. By doing so, the conducting wires x, x are electrically connected by the conductive plate d.

In the terminal block a having the configuration illustrated above, when attaching the connecting terminal y to the connecting seats e, e, use one hand to insert the connecting terminal y into the fitting hole until the connecting terminal y is fixed with the bolt g. It is necessary to hold the conductive plate d in a position where z coincides with the insertion hole f of the conductive plate d, and the rotation operation of the bolt g using a tool must be performed with one hand, making the installation operation difficult. .

The present invention aims to eliminate the drawbacks of the conventional device, and the present invention is to provide a plurality of connecting seats each electrically connected to each other in an appropriate relationship by the conductive plate, and the screws of the conductive plate are A crimping piece having an insertion hole vertically aligned with the hole is biased downward by a first spring, and a support piece for freely suspending the fixing bolt is attached above the insertion hole of the crimping piece. The abutment plate, which is disposed in a biased manner and hangs downward from the inner end of the crimp piece, is engaged with the support piece by the downward bias so that the abutment plate is in an engagement relationship that is released by inward pressing of the abutment plate. a connection in which the crimping piece and the support piece are engaged, and in the engaged state, the crimping piece and the support piece are urged upwardly by a second spring which is weaker than the first spring, and the conductive plate and the crimping piece are attached to the end of the conductor. A gap is formed into which the terminal is inserted, and when the contact plate of the crimp piece is pressed by the tip of the connecting terminal to release the engagement, the crimp piece resists the second spring. Then, the first spring acts, the crimp piece moves downward, and the connection terminal is temporarily held between the crimp piece and the conductive plate.

An embodiment of the present invention will be described with reference to the accompanying drawings.

Reference numeral 1 denotes a terminal block, which is formed into a plate shape from an insulating resin material such as polycarbonate, and has a back plate 2.
A bottom plate 3, support parts 4 extending upward from both ends of the bottom plate 3, and a thick wall part 6 such as a partition wall 5 separating the left and right parts are integrally formed on one surface, and the upper ends of the support parts 4, 4 are integrally formed. A conductive plate 8 is mounted in the left-right direction across the partition wall 5, and the conductive plate 8 is divided by the partition wall 5.
The upper left and right parts are used as connection seats 7, 7, and screw holes 9, 9 are formed on the left and right sides of the conductive plate 8, respectively. A crimp piece 13 is disposed on each of the connection seats 7, 7, and an insertion hole 14 is formed at a position vertically aligned with the screw hole 9. The inner end of the crimp piece 13 hangs downward from the groove 8a of the conductive plate 8 to form an abutting piece 15, and an engagement step 15a is formed on the inner surface of the lower end of the abutting piece 15, which is further extended downward. A spring seat piece 16 is formed by extending the spring seat piece 16 into a widthwise direction, and then bending it outward at a right angle.
The outer corner surface of the bent portion of the spring seat piece 16 is brought into contact with the tip of the support leg 5a hanging below the partition wall 5. Further, at the outer end of the crimp piece 13, an auxiliary terminal 17 is provided that projects obliquely upward.

Furthermore, support pieces 20 are disposed on the crimp pieces 13, respectively, and the fixing bolts 18 are inserted into through-holes 21 formed above and below the screw holes 9 to suspend them. A hanging piece 22 hangs downward from the groove 8a and has an engagement step 22a on its inner surface, and the hanging piece 22 is brought into contact with the abutment piece 15 from the inside. Further, the lower end of the hanging piece 22 is bent outward at a right angle to form a spring support piece 23 located on the spring seat piece 16 and protruding in the width direction. Further, the outer corner surface of the upwardly bent portion of the crimp piece 13 contacts the arcuate surface of the upper part of the partition wall 5, and is restrained from moving upward by the projection 5b of the partition wall 5.

A spring 27 (first spring) that causes springing work is attached between the spring seat piece 16 and the spring support piece 23,
Due to the biasing action, the engagement steps 15a and 22a are formed on the contact piece 15 and the hanging piece 22, respectively, in the position shown in FIG.
and engage each other.

Also, on the bottom plate 3 is a coil spring 30 (second spring) that produces a spring action that is weaker than the spring 27.
is placed, and its biasing force is applied to the lower surfaces of the left and right spring seat pieces 16. Therefore, as shown in FIG. 2, the crimp piece 13 and the support piece 20 are connected to each other in the connecting seat 7, and the support piece 20 floats to the upper limit position where it cannot move upward, and the conductive wire is connected between the conductive plate 8 and the crimp piece 13. A mounting gap s is formed into which the connecting terminal y of x is inserted. In this state, when the contact piece 15 of the crimp piece 13 is pressed with the tip of the connecting terminal y as shown in FIG.
Since it is connected to the tip of the foot lever 5a and is supported by the outer corner surface of the contact piece 15, it is tilted in the direction of the arrow in FIG. Since it is supported and tilted around this point as a fulcrum as shown in the figure, the engagement stages 15a and 22a are disengaged and the connection between the crimp piece 13 and the support piece 20 described above is made as shown in Fig. 4. It will be canceled. Therefore, since the support piece 20 is restrained so that it cannot move upward, the spring 27 acts against the urging force of the coil spring 30.
The spring seat piece 16 is pushed down in the direction, and the crimp piece 13 instantly descends to clamp the connecting terminal y with the conductive plate 8. At this time, the U-shaped or round-shaped fitting hole z formed in the connection terminal y is made to match the screw hole 9 vertically. After this, as shown in FIG.
By manually lowering the support piece 20 against the pressure and screwing the fixing bolt 18 into the screw hole 9, the connection of the conducting wire x is completed.

In addition, numeral 35 is a display plate mounted in the fitting groove 36 at the upper part of the back plate 2, and notches 37 slightly inclined downward are formed on both side edges of the fitting groove 36, and the display plate 35 By inserting one end edge of the plate 35 into the notch 37 from an oblique direction, the fitting groove 3
It is easy to install it inside the 6.

As clarified by the above construction, the present invention allows the fixing bolt 18 to freely rotate above the insertion hole 14 of the crimp piece 13 provided on the connection seat 7 by being biased downward by the first spring 27. The supporting piece 20 suspended by the crimping piece 13 is disposed in an upwardly biased manner, and the crimping piece 13 and the supporting piece 20 are brought into an engagement relationship that is released when the abutting plate 15 of the crimping piece 13 is pressed inward. The crimping piece 13 and the support piece 20 are then urged upward by the second spring 30, which is weaker than the first spring 27, in the engaged state. Since a gap s is formed between the conductive plate 8 and the crimping piece 13 into which the connecting terminal y attached to the end of the conductor x is inserted, the tip of the connecting terminal y inserted through the gap s can be crimped. When the contact plate 15 of the piece 13 is pressed to release the engagement, the first spring 27 acts on the crimp piece 13 against the second spring 30, causing the crimp piece 13 to move downward. Since the connection terminal is temporarily held between the crimp piece 13 and the conductive plate 8, there is no need to hold the conductor 10 by hand when attaching the conductor 10 to the connection seat 7. 20, the conductive plate 8 is vertically held in a position that precisely matches the screw hole 9 above, so there is no need for a search operation to match the screw hole 9 during the screwing operation, and the installation is extremely easy. Since it is simple, there are excellent effects such as being able to easily attach the conductor x to the connection seat 7.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional terminal block a, Figs. 2 to 5 show an embodiment of the present invention, Fig. 2 is a partially cutaway front view of the terminal block 1, and Figs. FIG. 3 is a front view of the main parts showing the operation of attaching the conducting wire x to the stand 1; 1... Terminal block, 8... Conductive plate, 13... Crimp piece, 18... Fixing bolt, 21... Spring seat piece,
20...Support piece, 23...Spring support piece, 27...
Spring (first spring), 30... Coil spring (second spring), x... Conductor, y... Connection terminal.

Claims (1)

[Scope of utility model registration request] A first crimping piece having an insertion hole vertically aligned with the screw hole of the conductive plate is attached to a plurality of connection seats, each of which is electrically connected in an appropriate relationship by the conductive plate.
A supporting piece for freely hanging the fixing bolt is disposed above the insertion hole of the crimp piece, and is biased upwardly from the inner end of the crimp piece. The contact plate hanging down is engaged with the support piece by the downward bias in an engagement relationship that is released by inward pressing of the contact plate, and in this engaged state, the crimp piece and the support piece is biased upward by a second spring weaker than the first spring to form a gap between the conductive plate and the crimp piece into which a connecting terminal attached to the end of the conductor is inserted, and the tip of the connecting terminal When the contact plate of the crimp piece is pressed to release the engagement, the first spring acts on the crimp piece against the second spring, and the crimp piece moves downward. A terminal block characterized in that a connection terminal is temporarily held between a crimp piece and a conductive plate.