JPH037027Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention is a method for electrically connecting a conductive terminal such as a round crimp terminal to a conductive terminal plate by pressing a washer piece by tightening a terminal screw. When making a connection, the terminal screw is configured to be able to be held in two states: a state in which it is removed from the terminal board and the conductive terminal can be inserted, and a state in which it is inserted into the screw hole of the terminal board and the conductive terminal is temporarily fastened. The present invention relates to a terminal connecting device that prevents screws from falling off during terminal attachment work and allows conductive terminals to be easily connected.

<Prior art> This type of conventional general terminal connection device is
The configuration is as shown in the figure. That is, the terminal block main body 1 is integrally molded from an insulating material such as plastic, and when a large number of the same devices are installed in parallel, a partition plate is used to ensure electrical insulation from other adjacent terminal connecting devices. 2, a central partition wall 3 that divides the partition plate 2 into left and right halves, a pair of guide walls 4 and 5 provided in parallel below the central partition wall 3, and a left end wall and a right end wall at both left and right ends of the partition board 2. walls 6, 7,
The lower rail attachment part 8, a protrusion 9 for fitting into another adjacent terminal connection device, and a fitting groove (not shown) on the back thereof are integrally molded. Terminal board 10
is a rectangular flat plate made of a conductor supported by the central partition wall 3 and the left and right end walls 6, 7, with the left and right sides having
Notches 10c and 10d are provided with screw holes 10a and 10b, and are used to pass movable members 11 and 12 that touch both sides of the central partition wall 3 and move up and down.
is formed. Both movable members 11 and 12 are bilaterally symmetrical, and have a retaining piece 1 at one end.
Guide rods 11b and 12 in which 1a and 12a are formed
square washer pieces 11c, 1 in the orthogonal direction from the other end of b
2c has an extended shape. Then, the terminal screws 13, 14 are inserted into the respective washer pieces 11c, 12c, and the heads 13a, 14 of the terminal screws 13, 14 are inserted into the respective washers 11c, 12c.
a and spring wires 15, 16 are rotatably supported, guide rods 11b, 12b are inserted into notches 10c, 10d of terminal plate 10 and guided,
The terminal screws 13 and 14 are brought into contact with and separated from the screw holes 10a and 10b of the terminal plate 10 by the movable members 11 and 12 sliding on the side surfaces of the central partition wall 3 and moving up and down. Moreover, between both guide walls 4 and 5,
A leaf spring 17 bent into a substantially U-shape is inserted so as to be wrapped around the boss 18.
The pressing parts 17a and 17b, each of which has bent end edges, are the respective retaining pieces 1 of both movable members 11 and 12.
1a and 12a are elastically abutted.

When connecting the conductive terminal T, when it is pulled upward like the movable member 12 on the right side, the retaining piece 12a is moved from the pressing part 17 of the leaf spring 17.
Since the terminal screw 14 is held in a state separated from the terminal board 10 by being elastically supported by the terminal board 10, the conductive terminal T is placed on the screw hole 10b of the terminal board 10 in this state. Thereafter, when the movable member 12 is pushed down, the terminal screw 13 passes through the conductive terminal T and enters the screw hole 10a of the terminal board 10, so that the conductive terminal T is temporarily fixed. When this screw 13 is screwed into the screw hole 10a with a screwdriver and tightened, the conductive terminal T is pressed against the terminal plate 10 by the washer piece 11c and electrically connected. In this work, the terminal screws 13 and 14 are connected to the movable members 11 and 1.
It is supported by 2 and does not fall off.

<Problems to be solved by the invention> However, the terminal connection device
The terminal screws 13, 14 and the movable members 11, 12 are arranged on the upper part of the terminal board 1.
Since the leaf spring 17 is disposed to support in two states, ie, close to and away from zero, the shape is relatively large.
In particular, this type of terminal connection device is used, for example, as a wiring relay device in a control panel by arranging a large number of the same terminal connection device, so there is a problem that the terminal connection device becomes very large when viewed as a whole.

Further, guide rods 11b, 1 are provided with retaining pieces 11a, 11b at the tips of the movable members 11, 12.
2b are inserted into the notches 10c and 10b of the terminal board 10, so when assembling it is necessary to attach the movable members 11 and 12 to the terminal block main body 1 before the terminal board 10. It is necessary to provide temporary fixing means to prevent the members 11 and 12 from falling off, which has the disadvantage of poor assembly efficiency.

Furthermore, the approximately U-shaped leaf spring 17 must be assembled into the terminal block main body 1 while being pressurized inward and deformed in the closing direction. In other words, since a force is applied in a parallel direction to the cutting plate 2, for example, when the movable members 11 and 12 are pulled upward, a force is applied to the guide rods 11b and 12b in a direction that causes them to incline inwardly, thereby creating a gap, etc. As a result, the movable members 11 and 12 not only do not move downward smoothly, but also may fall toward the front side.

<Purpose of the invention> The present invention was devised in view of the above problems, and includes a movable member that supports the terminal screw and an elastic member that elastically supports the vertical movement of the terminal screw on one side of the terminal board. By configuring
It is an object of the present invention to provide a terminal connecting device that is small in size, has good assemblability, and can smoothly connect conductive terminals.

<Means for Solving the Problems> In order to achieve the above object, the terminal connecting device of the present invention includes a central partition wall, a pair of left and right sliver stands along both sides of the partition wall, and a pair of sliver stands located forwardly below the partition wall. A terminal block main body is integrally formed with a protruding support rib, and a screw hole and a guide hole are provided on both sides of the partition wall, which is inserted into the terminal block main body at a position below the support rib and perpendicular to the partition wall. A conductive terminal plate formed with a conductive terminal plate, a pair of mounting pieces that are in pressure contact with the upper and lower surfaces of the support rib and are attached to the support rib from the front side in a gripping state, and a pressing portion that faces each of the slide bases are bent. an elastic member integrally formed with a pair of formed elastic pieces, and a guide rod which is slidably held in the vertical direction by a pressing portion of the elastic member and the slide base, and whose lower end is inserted into the guide hole. A pair of L-shaped movable members each having a convex portion formed in the center of one side surface that is in contact with the pressing portion and having a washer piece extending orthogonally from the upper end of the guide rod, and a washer of the movable member. The gist of the device is that it includes a pair of terminal screws that are inserted and supported in the insertion holes of the pieces and are opposed to each other so as to be screwed into the screw holes.

<Operation> The terminal connecting device configured as described above has a movable member that is inserted into the guide hole of the terminal board and slides on the slide base of the terminal block main body, at the center of one side of the slide rod, which elastically contacts the movable member. Since the convex part that engages with the pressing part of the elastic piece of the elastic member that contacts and holds the elastic member is formed, the movable member and the elastic member can be positioned above the terminal plate, respectively, and the movable member and the elastic member can be positioned on the upper and lower sides of the terminal plate. It is much more compact than conventional devices in which a movable member and an elastic member are arranged. In addition, when assembling, the guide rod of the movable member is inserted into the guide hole of the terminal board, so after inserting the terminal board into the terminal block body, the movable member is inserted with its guide rod from above the guide hole. The movable member can be attached without any temporary fixing means.

In addition, the elastic member can be easily installed by simply pushing a pair of mounting pieces between the ribs from the front side without applying any force that would cause deformation as in conventional methods, and the elastic member is movable. Since the guide rod of the member is urged to be pressed against the rear slide base, the guide rod can be held so as to smoothly move downward, and the movable member can be prevented from falling forward.

<Example> Hereinafter, an example of the present invention will be explained in detail based on the drawings.

1 to 4, the terminal block main body 20 includes a partition plate 21 for ensuring electrical insulation from other terminal connection devices adjacent to each other, and the upper part of the partition plate 21 is divided into left and right halves. A central partition wall 22;
A pair of slide bases 23 formed along the left and right side surfaces of the central partition wall 22, a pair of support ribs 24 disposed below the central partition wall 22 with a slight gap therebetween, and A holding base 2.5 formed at a predetermined interval below, a pair of guide ribs 26 on both sides of the upper part, a pair of support protrusions 27 on both sides of the center part, and a rail mounting part 28 provided at the lower end of the partition plate 21. , an engaging convex portion 29 for fitting into another adjacent terminal connecting device, and a recess (not shown) on its back surface are integrally molded of plastic.

The terminal board 30 is made of a conductive rectangular flat plate that is substantially the same as the conventional one, and screw holes 30a and 30b, which serve as female screws, are cut on both left and right sides.
A rectangular guide hole 3 is provided on the inner side of each of a and 30b.
0c and 30d are perforated. Then, it is inserted and held between both support ribs 24 and a holding base 25, and both ends are supported by support protrusions 27.

The elastic member 31 inserted in contact with the upper surface of the terminal plate 30 is formed by bending a substantially U-shaped leaf spring member. Attachment pieces 31b and 31c that protrude in parallel from the lower side are inserted and attached to both sides of the support rib 24, and are formed by bending the ends of elastic pieces 31d and 31e that protrude from both ends of the upper side of the main body piece 31a. pressing parts 31f, 31g
are facing the slide stands 23, 23, respectively.

The movable members 32 and 33 are bilaterally symmetrical, and the guide rod 3 extends from one side of the rectangular washer pieces 32a and 33a into which the terminal screw 34 is inserted in the orthogonal direction.
Guide rods 32b and 33b that have an approximately L-shaped cross section with extending portions 2b and 33b that slide on the slide table 23;
The guide holes 30c, 30 of the terminal plate 30 are located at the tip of the terminal plate 30.
Locking claws 32c and 33 for preventing slippage that can be inserted into d
c is formed, and the guide rods 32b,
Pressing portions 31f, 3 of elastic member 31 in 33b
A convex portion 3 is provided at the center of one side where 1g is elastically abutted.
2d and 33d are formed respectively. The head 34a of the terminal screw 34 and the spring wire 35 are rotatably supported at the peripheral edge of the insertion hole of the washer pieces 32a, 33a.

Next, the operation of the embodiment apparatus configured as described above will be explained. Right side of Figure 1 and A-A of Figure 1
FIG. 3, which shows a line cross section, shows a movable member 3 for connecting a conductive terminal T made of, for example, a round crimp terminal.
3 is shown in a raised state. When the movable member 33 is pulled up, the locking claw 33c at the end of the guide rod 33 that slides on the slide base 23 comes into contact with the lower end surface of the slide base 23 as shown in FIG. The upper limit position is regulated. At this time, the elastic member 31
The pressing portion 31g contacts the lower surface side of the convex portion 33d of the movable member 33 and supports the movable member 33 without moving downward or falling forward.
is held upwardly away from the terminal plate 30 as shown by the two-dot chain line in FIG.
and the terminal screw 34.

Next, when the movable member 32 is pushed down from the above state as shown in FIG. 4, which shows the left side of FIG. 1 and a cross section taken along line B-B in FIG. At the same time, the guide rod 32b slides on the slide base 23 and is guided by the guide hole 30c to restrict the movement direction, so that the lower end of the terminal screw 34 passes through the ring portion of the conductive terminal T and the terminal 30 screw holes 30
Enter a. At this time, the pressing portion 31f of the elastic member 31 that comes into sliding contact with one side of the guide rod 32b is pressed against the convex portion 3.
2b and maintains the above-mentioned state, and the conductive terminal T is temporarily fixed. In this state, when the terminal screw 34 is screwed into the screw hole 30a with a screwdriver and fastened, the conductive terminal is attached to the terminal board 3 by the washer piece 32a.
0 and is electrically connected.

This terminal connection device has an elastic member 3 at approximately the center of guide rods 32b and 33b of movable members 32 and 33.
Convex portions 32d, 3 that engage with the pressing portions 3f, 3g of 1
3d, the movable members 32, 33
In addition, the elastic members 31 for holding the terminal screws 34, 34 in the upper and lower predetermined positions for temporarily fixing the conductive terminals T are attached to the movable members 32, 3 with respect to the terminal plate 30.
3 and the terminal screw 34, the device is much smaller as is clear from the comparison with the conventional device shown in FIG.

Also, when assembling, the terminal block 30 is formed with guide holes 30c and 30b through which the guide rods 32b and 33b of the movable members 32 and 33 can be inserted. After inserting the guide rods 32b and 33
b is inserted from above between the slide base 23 and the elastic pieces 31d and 31e of the elastic member 31, and the lower end is inserted into the guide holes 30c and 30d.
Since the movable members 32 and 33 provided with the terminal screws 34 can be attached last, there is no need for temporary fixing means for the movable members 32 and 33 as in the conventional device shown in FIG. All you have to do is push it in, which greatly improves the ease of assembly.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various embodiments can be considered based on the scope of the claims.For example, in the embodiment, the elastic member 31 is a plate spring, but it can be It is also possible to use springs, wire springs or springs.

<Effects of the Invention> As explained above, according to the terminal connecting device of the present invention, the elastic member for holding the movable member supporting the terminal screw in two vertically moved positions for temporary fixing of the conductive terminal, Since the movable member is located on the same side of the terminal board, it can be much smaller than conventional devices in which the movable member and the elastic member are located on both sides of the terminal board, making the installation space more effective. can be used.

In addition, a guide hole is drilled in the terminal block through which the guide rod of the movable member can be inserted, and the movable member supporting the terminal screw can be installed after the terminal block and elastic member are inserted into the terminal block body, which is different from conventional devices. As such, there is no need for temporary fixing means for the movable member at all, and the elastic member can simply be pushed in without applying any force that would deform it. This greatly improves ease of assembly and allows the movable member to move forward. It can also prevent you from falling.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the terminal connection device of the present invention, in which FIG. 1 is a front view, FIG. 2 is an exploded perspective view, and FIGS. 3 and 4 are partially omitted diagrams. 1 is a cross-sectional view taken along line A-A and line B-B, and FIG. 5 is a front view of the conventional device. 20... Terminal block body, 22... Center bulkhead, 23
...Slide base, 24...Support rib, 30...Terminal board, 30a, 30b...Screw hole, 30c, 30
d...Screw hole, 31...Elastic member, 31b, 31
c...Mounting piece, 31d, 31e...Elastic piece, 31
f, 31g...Bending portion, 32, 33...Movable member, 32a, 33a...Washer piece, 32b, 33b
...Guide rod, 32d, 33d...Protrusion, 34...
...Terminal screw.

Claims (1)

[Scope of utility model registration request] a terminal block main body integrally formed with a central partition wall, a pair of left and right slide stands along both sides of the partition wall, and a support rib protruding forward below the partition wall;
A conductive terminal plate is inserted into the terminal block body at a position below the support rib and perpendicular to the partition wall, and has a screw hole and a guide hole formed on both sides of the partition wall, and above the support rib. an elastic member that is integrally formed with a pair of mounting pieces that are in pressure contact with the lower surface and gripped from the front side of the support rib; and a pair of elastic pieces that have bent pressing portions facing each of the slide bases; , a guide rod that is vertically slidably clamped by the pressing portion of the elastic member and the slide base and whose lower end is inserted into the guide hole has a convex portion in the center of one side of the guide rod that is in contact with the pressing portion; A pair of L-shaped movable members are formed, each having a washer piece extending orthogonally from the upper end of the guide rod, and each movable member is inserted and supported into the insertion hole of the washer piece of each movable member and is screwed into the screw hole. 1. A terminal connection device comprising a pair of terminal screws that are preferably opposed to each other.