JP2001035561A - Clamping terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformize deformation of a spring by arranging a push button consisting of an insulating material so as to laterally straddle the support part of a conductive from above by a pair of mutually separated leg parts thereof, and touching it to a spring larger in width than that of the support part, which presses the lower surface of the support part on the outside of the support part. SOLUTION: A pair of leg parts 31 of a push button 6 straddles a support part 37A of a terminal 11 and abut on both edges of a spring tip part 42A, which extend sideward over both lateral sides of the support part 37A. When the push button 6 is depressed from above, the inclined surface 6A is descended until it touches the top wall 37 of the terminal 11. At that time, a horizontal flat part 42 of a spring 13 is depressed down to a position shown by a virtual line by the leg parts 31 to separate the support part 37A of the terminal 11 from the spring tip part 43A. According to this, a conductor 10 inserted through the hole 5 of a housing body can be inserted between the support part 37A and the spring 13. Since the push button 6 presses both edges of the spring with the leg parts, the spring can be deformed uniformly as a whole in the lateral direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp terminal suitable for use with a conductor such as a telephone line.

[0002]

2. Description of the Related Art FIG. 6 is an exploded perspective view of a main part of a conventional example of such a clamp terminal. The clamp terminal 101 shown in the figure includes a conductive terminal 103 which is housed in a housing 102 made of an insulating material (its outer shape is indicated by a virtual line), and a spring 104.
And an insulating push button 106. Terminal 1
Numeral 03 has a conductor supporting portion 107, and a leaf spring 104 is pressed against the lower surface of the supporting portion 107. The spring 104 is wider than the support 107, and one of the side edge portions 108 is located outside the support 107. Push button 106
Is shown in a state where it is taken out of the housing 102, but when pressed with a finger, it comes into contact with the portion 108 of the spring 104 from the direction of arrow X to push down the spring 104, and
Can be separated from the

FIG. 7 is a view taken along line VII-VII of FIG. However, unlike FIG. 6, the push button 106 is incorporated into the housing
8 is shown in a state of abutting. As shown by the imaginary line, the spring 104, which is pushed down by the push button 106 on one side portion 108 in the width direction, has its entire width inclined downward to the right as shown in the figure. The conductor 110 is connected to the support 107 of the terminal 103 and the spring 1 from outside the housing 102.
08 is inserted into the gap 112 formed between the first and the second.

FIG. 8 is a view similar to FIG. 7 showing a state in which the conductive wire 110 is clamped by the spring 104 and the support portion 107 where the finger separates from the push button 106 to return to the original position. Since the conducting wire 110 is biased to one side in the width direction of the spring 104, the spring 104 is inclined to the upper right as shown.

[0005]

As shown in FIG. 7, in the conventional clamp terminal 101, when the push button 106 is pressed, the spring 104 is tilted, and the tilt is smaller than the dimension in which the push button 106 is lowered. And conductor 1
There is a direction in which the gap 112 into which the part 10 is to be inserted becomes narrower. Therefore, even if the operator presses the push button 106 strongly, the lead wire 110 may be hooked on the spring 104 and take time to insert.

[0008] As shown in FIG.
Is clamped to the upper right, and when this state continues for a long period of time, the spring 104
Have a habit of inclining like that, for example, with a diameter of 0.9-1.
The initial conductor 110 having a diameter of 2 mm has a diameter of 0.4 to 0.5 m.
When attempting to replace the conductor with a thinner m, the thinner conductor may not be able to be clamped.

Accordingly, an object of the present invention is to provide a clamp terminal which can solve all of the above-mentioned problems in the conventional clamp terminal.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a housing made of an insulating material, a terminal made of a conductive material to be accommodated in the housing, and a housing in the housing. A clamp terminal having a spring that is in pressure contact with the terminal and a push button made of an insulating material that is housed in the housing and can press the spring.

The features of the present invention in such a clamp terminal are as follows. The terminal is formed with a support portion for the conductor inserted into the housing, and the spring is pressed against the lower surface so that the conductor can be clamped by the lower surface of the support and the spring. . The spring is formed wider than a width of the support portion in a direction orthogonal to a direction in which the conductor extends, and extends outward beyond both sides in the width direction of the support portion. The push button has a pressing portion protruding from the housing and a pair of legs extending from the pressing portion toward the spring, and can press the spring from above to separate it from the lower surface of the support portion. like,
The pair of legs are separated from each other, straddle the support in the width direction, and are in contact with the spring from above on the outside of the support.

In one embodiment of the present invention, an inner end of a lead wire insertion hole formed in the housing so that the pair of legs can guide a lead wire inserted into the housing between the two legs. And is separated from each other by substantially the same width as the width of the conductive wire insertion hole.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the clamp terminal according to the present invention will be described below with reference to the accompanying drawings.

A clamp terminal 1 shown in a perspective view in FIG.
Has a housing 2 made of an insulating material, and the housing 2 is formed of a main body 3 and a lid 4 that is attached to and detached from the main body 3. A lead wire insertion hole 5 is formed in the main body 3, a part of the push button 6 protrudes from a top 7 of the main body 3, and a bottom 9
The legs 12 of the terminals 11 (see FIG. 2) can be seen from above.

FIGS. 2 and 3 show an exploded perspective view of the clamp terminal 1 and an assembled state of the clamp terminal III-II in FIG.
It is I sectional drawing. However, in FIG. 2, the illustration of the cover 4 is omitted, and some parts are shown in a cutaway view.

As is apparent from FIG.
Is a terminal 11 that fits into the main body 3 of the housing 2 in the directions indicated by arrows A, B, and C, in addition to the housing 2, and a leaf spring 1
3 and a push button 6. The body 3 has a top 7
21, a recess 21 surrounded by the bottom 9 and the first and second side walls 16, 17, a push button fitting hole 22 formed in the top 7, a lead wire insertion hole 5 formed in the first side wall 16, and a bottom 9 has a pair of cutouts 24.

The push button 6 is made of an insulating material. The push button 6 is slidable in the upper and lower parts 26 and the hole 22 of the main body 3 when housed in the main body 3. And a lower part 27 to be fitted. The upper portion 26 has an operating recess 28 on the top surface, into which the tip of a small flathead screwdriver can be inserted to push the push button 6. The lower portion 27 has a pair of legs 31 extending downward in parallel with each other. The legs 31 have an inclined surface 32A and a horizontal surface 32B, and an inclined surface 6A is formed between the legs 31. Projection 33 formed on the side surface of lower part 27
Fits into the portion 34 of the concave portion 21 in the main body 3 to prevent the push button 6 from coming out of the main body 3 upward.

The terminal 11 is a bent product of a conductive metal plate, and has a flat portion 36 substantially the same as the flat shape of the concave portion 21.
And the concave portion 21 is bent at a right angle to the flat portion 36.
Top wall 37, bottom wall 38, and side wall 3 contacting the inner peripheral surface of
9, and a pair of legs 12 extend from the bottom wall 38 (see also FIG. 3).

The spring 13 has a vertical flat portion 41, a horizontal flat portion 42, and a curved portion 43 interposed between the flat portions 41 and 42. The spring 13 is housed in the recess 21 so that the curved portion 43 and the vertical flat portion 41 are located between the spring guide protrusion 44 formed in the recess 21 and the first side wall 16.

As is apparent from FIG. 3, in the assembled main body 3, the top wall 37, the bottom wall 38, and the side wall 39 of the terminal 11 are provided.
Are in contact with the inner peripheral surface of the concave portion 21 of the main body 3. Terminal 1
One leg 12 extends downward through a notch 24 in the body 3. The spring 13 has a vertical flat portion 41 between the projection 44 of the concave portion 21 and the side wall 39 of the terminal 11. The horizontal flat portion 42 extends horizontally or slightly to the upper right,
The tip portion 42A is connected to the conductor supporting portion 37A of the top wall 37 of the terminal 11.
(See also FIG. 4) from below. In the push button 6, one leg 31 shown is positioned deeper than the top wall 37 of the terminal 11, and the horizontal surface 32 </ b> B of the leg 31 abuts on the tip 42 </ b> A of the spring 13 from above. The top wall 7 and the first and second side walls 1 of the main body 3 assembled as described above.
When the body 3 is closed by inserting the bosses 46 (see FIG. 2) formed on the side surfaces of the lids 6 and 17 into the assembling holes (not shown) provided in the lid 4, the push buttons 6 and the terminals 11 are closed.
And the spring 13 are housed in the housing 2 so as not to fall off.

In FIG. 3, when a finger or a driver touches the push button 6 and pushes it from above, the push button 6
Can be lowered until the inclined surface 6A comes into contact with the top wall 37 of the terminal 11, and when descending, the leg portion 31 pushes down the horizontal flat portion 42 of the spring 13 to the position shown by the phantom line. The support portion 37A is separated from the spring tip portion 42A. Therefore, the conductor 1 inserted through the hole 5 of the main body 3
0 (indicated by phantom lines) can also be inserted between the support 37A and the spring 13. When the finger is released from the push button 6, the flat portion 42 in the horizontal direction of the spring 13 moves in the direction to return to the original position.
0 can be clamped. When removing the conductor 10 from the housing 2, the push button 6 may be pressed to separate the spring tip 42 </ b> A from the conductor 10.

FIG. 4 is a perspective view of the terminal 11 when the top wall 37 is viewed from the front. In the terminal 11, the flat portion 36
The through-hole 51 and the conductor supporting portion 37A of the top wall 37 are formed by partially notching the top wall 37. In the support portion 37A, the width W of the top wall 37 is narrower by the cutout, and a relatively wide spring tip portion 42A (shown by a phantom line) that contacts the support portion 37A from below is formed by the support portion 37A.
Extending to the side beyond both sides. Such a support portion 37
A continues to the inner end of the insertion hole 5 of the main body 3 (see FIG. 3), and preferably has the same width as the insertion hole 5.

FIG. 5 is a drawing showing a main part of a cross section taken along line VV of FIG. The pair of leg portions 31 of the push button 6 straddle the support portion 37A of the terminal 11 and abut on both edge portions 53 and 54 of the spring tip portion 42A that extend laterally beyond both sides in the width direction of the support portion 37A. ing. As shown in the drawing, one of the pair of legs 31 enters the through hole 51 and contacts the edge 54. The distance between the legs 31 is slightly larger than the width of the support portion 37A, and is substantially the same as or slightly larger than the width of the inner end of the insertion hole 5 of the main body 3. The push button 6 pushes both edges 53 and 54 of the spring tip 42A evenly, and moves the spring tip 42A downward in parallel as indicated by the phantom line, and the opening is substantially rectangular and has no distortion. The part 40 can be formed. Housing 2
The lead wire 10 that enters the insertion portion 40 from the insertion hole 5 is smoothly guided by the leg portions 31 located on the left and right sides, and can be located at the center in the width direction of the spring tip portion 42A.

[0022]

According to the clamp terminal thus formed, (1) Since the push button presses both side edges of the spring with the pair of legs, the entire width of the spring is uniformly deformed. It does not tilt with respect to the conductor supporting portion unlike the above. (2) The spring thus deformed has its entire width separated from the conductor supporting portion by an equal distance, and can form a relatively wide space for inserting a conductor between the spring and the conductor supporting portion. (3) The lead wire inserted into the space is guided by the two legs of the push button located near the inner end of the lead wire insertion hole of the housing, and can smoothly reach the space. (4) Since the conductive wire can be located at the center in the width direction of the spring, the entire width of the conductive wire is clamped with a uniform pressure by the spring and the conductive wire support. If the conductor is a stranded wire, the clamping pressure is eccentric and only a part of the stranded wire is acted upon to prevent the entire stranded wire from being clamped. There is no such thing as giving. The stranded wire is sandwiched between the legs of the push button,
There is no scatter. (5) Since the spring whose entire width is uniformly deformed does not have a habit that the spring inclines in the width direction unlike the related art, this clamp terminal can be used even for a long period of time even if the spring is thick. And a thin conductive wire can be clamped without distinction.

[Brief description of the drawings]

FIG. 1 is a perspective view of a clamp terminal.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is a sectional view of a main part taken along line III-III of FIG. 1;

FIG. 4 is a perspective view of a terminal.

FIG. 5 is a sectional view of a main part taken along line VV of FIG. 3;

FIG. 6 is a perspective view of a main part of a conventional clamp terminal.

FIG. 7 shows a state in which the spring is pressed, as indicated by VII- in FIG.
Sectional drawing of VII line principal part.

FIG. 8 is a view similar to FIG. 7, showing a state where the conductor is clamped.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamp terminal 2 Housing 6 Push button 10 Conductor 11 Terminal 13 Spring 31 Leg 37A Support part

Claims (2)

[Claims] 1. A housing made of an insulating material, a terminal made of a conductive material contained in the housing, a spring pressed into the terminal in the housing, and an insulating material placed in the housing and capable of pressing the spring. In a clamp terminal having a push button made of a material, a support portion for a lead wire inserted into the housing is formed on the terminal, and the lead wire can be clamped by a lower surface of the support portion and the spring. The spring is pressed against the lower surface, and the spring is formed to be wider than the width of the support portion in a direction orthogonal to the direction in which the conductive wire extends, and extends across both sides in the width direction of the support portion. A pusher protruding from the housing, and a pair of pushbuttons extending from the pusher toward the spring. The pair of legs are separated from each other and straddle the support in the width direction so that the spring can be pressed from above and separated from the lower surface of the support. The clamp terminal is in contact with the spring from above from outside the portion. 2. A pair of legs are located adjacent to an inner end of a lead wire insertion hole formed in the housing so that a lead wire inserted into the housing can be guided between the legs. The clamp terminal according to claim 1, wherein the clamp terminals are separated from each other by a width substantially equal to a width of the conductive wire insertion hole.