JPH0644035Y2 - Levitation mechanism of screws in terminal block - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for lifting a screw of an external electric wire connecting member in a terminal block used for electric / control equipment or the like.

[0002]

Structure and Problems of Prior Art FIG. 4 is a plan view of a conventional terminal block used for electric and control equipment, and FIG. 5 is CC of FIG.
It is a line sectional view. In the figure, the terminal block 50 has a case 51 made of synthetic resin and a conductive metal fitting 52 made of conductive metal attached to the case 51. The conductive metal fitting 52 has an external electric wire connection terminal portion 53 at one end and a connection terminal portion 54 connected to an electron tube socket or the like at the other end. An external wire connection member 55 is attached to the external wire connection terminal portion 53. The external electric wire connecting member 55 includes a moving member 56 movably supported at one end of the conductive metal fitting 52 in a vertical direction,
And a screw 57 rotatably attached to the moving member 56. The lower end of the moving member 56 is elastically biased upward by a coil spring 58. A nut 59 is attached to the back surface of the external wire connection terminal 53 of the conductive fitting 52. Insert a crimping terminal (not shown) at the end portion of the external electric wire to be connected to the terminal block 50 between the lower end of the screw 57 and the external electric wire connecting terminal portion 53, and screw the screw 57 with a driver (not shown). When the moving member 56 is pushed down and the screw 57 is fastened to the nut 59, the crimp terminal at the end portion of the external electric wire is moved to the moving member 56 and the external electric wire connecting terminal portion 53.
The external electric wire is electrically connected to the terminal block 50. The external electric wire connecting member 55 on the lower end side of FIG. 5 shows such a state. This terminal block 50
Has a screw 57 attached to the moving member 56 and is elastically urged upward by a coil spring 58 to be lifted, so that the screw 57 is connected when the crimp terminal of the external electric wire is connected.
Need not be removed from the nut 59. Therefore, there is an advantage that the time for connecting the external electric wire can be shortened as compared with the case where the screw 57 is not lifted by the moving member 56.

However, in the terminal block 50 having the above-described structure, the coil spring 58 for elastically biasing the moving member 56 is required, and the number of parts is increased. Therefore, the cost is increased and the terminal block 50 is assembled. There is a problem that it takes time.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention was devised in view of the above circumstances, and it is an object of the present invention to reduce the number of parts, the cost, and the time for assembling a terminal block in a terminal block having a mechanism for floating a screw. And

[0005]

This invention is composed of an insulating case and a terminal assembly provided in the case.
It is provided with a conductive metal member made of a conductive metal and fixed to the case, and an external wire connecting member assembled on one end side of the conductive metal member, and the conductive metal member is made of one conductive metal plate,
A base portion extending from the mounting end side of the external electric wire connecting member toward the connection terminal portion provided at the other end, a bent portion provided at the base portion, one end connected to the bent portion, and the other end of the external electric wire connecting member. The external electric wire connecting member includes a moving member supported at one end of the conductive metal fitting so as to be vertically movable, and a screw rotatably attached to the moving member. However, the moving member of the external electric wire connecting member is elastically biased upward by the pressing portion of the conductive metal fitting.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a terminal block according to the present invention,
2 is a sectional view taken along the line AA, and FIG. 3 is a sectional view taken along the line BB in FIG. The terminal block 10 includes an insulating case 20 and a terminal assembly 30 provided in the case 20. Figure 1
As shown in FIG. 3, the terminal assembly 30 includes a conductive metal fitting 31 made of a conductive metal and fixed to the case 20, and a conductive metal fitting 31.
And an external electric wire connecting member 39 assembled on one end side of the. As shown in FIGS. 2 and 3, the conductive metal fitting 31 is made of a single conductive metal plate, has an external wire connecting terminal portion 32 for connecting a crimp terminal of an external wire at one end, and an electron tube socket at the other end. Connection terminal portion 33 for connection to
And a base portion 34 is formed between the external electric wire connection terminal portion 32 and the connection terminal portion 33. External wire connection terminal 32
Has a hole 35 through which a screw 41 of an external electric wire connecting member 39 described later passes, and a nut 36 arranged concentrically with the hole 35 is attached to the back surface of the external electric wire connecting terminal portion 32. A bent portion 37 that is bent vertically downward is provided at a side end portion of the base portion 34.
One end is connected to the bent portion 37, and the other end has a holding portion 38 that contacts the lower end side of the external electric wire connecting member 39. As shown in FIG.
1 has a moving member 40 movably supported in a vertical direction on the external electric wire connecting terminal portion 32, and a screw 41 rotatably attached to the moving member 40, and the lower end side of the moving member 40 is a conductive metal fitting. The pressing member 38 is in contact with the pressing member 38, and the moving member 40 is elastically biased upward by this.

A procedure for connecting a crimp terminal (not shown) of an external electric wire to the terminal block 10 constructed as described above will be described. The crimp terminal of the external electric wire is inserted between the lower end of the screw 41 and the external electric wire connecting terminal portion 32. When the screw 41 is pushed vertically downward by a driver (not shown), the moving member 4
0 descends against the elasticity of the pressing portion 38 of the conductive fitting 31. The tip of the screw 41 has a hole 35 in the external wire connection terminal portion 32.
To contact the nut 36. Screw 41 with screwdriver
When the nut is fastened to the nut 36, the crimp terminal of the external electric wire is sandwiched and fixed between the moving member 40 and the external electric wire connecting terminal portion 32. As a result, the crimp terminal of the external electric wire is electrically connected to the terminal block 10. The terminal assembly 30 on the lower end side of FIG. 2 shows that state. As described above, the screw levitation mechanism in the terminal block of the present invention can achieve the same effect as the mechanism for levitation the screw using the coil spring.

[0008]

As described above, the screw levitation mechanism in the terminal block of the present invention can omit the coil spring and reduce the number of parts of the terminal block by utilizing a part of the conductive metal fitting. . Therefore, the cost of the terminal block and the assembly time can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a terminal block 10 according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is a plan view showing a conventional terminal block 50.

5 is a sectional view taken along line CC of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Terminal block 20 Case 30 Terminal assembly 31 Conductive metal fittings 33 Connection terminal part 34 Base part 37 Bending part 38 Holding part 39 External electric wire connecting member 40 Moving member 41 Screw

Claims (1)

[Scope of utility model registration request] 1. An insulating case and a terminal assembly provided in the case, wherein the terminal assembly is made of a conductive metal and is fixed to the case by a conductive metal fitting and one end of the conductive metal fitting. And an external electric wire connecting member assembled on the side, wherein the conductive fitting is made of one conductive metal plate,
A base portion extending from a mounting end side of the external electric wire connecting member toward a connection terminal portion provided at the other end, a bending portion provided at the base portion, one end connected to the bending portion, and the other end being the external electric wire. The external wire connecting member includes a moving member supported at one end of the conductive metal fitting so as to be vertically movable, and a rotatably attached to the moving member. And a screw, and the moving member of the external electric wire connecting member is elastically biased upward by the pressing portion of the conductive metal fitting.