JP2018160358A - Terminal arrangement of electrical machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the terminal arrangement of electrical machine capable of exhibiting screw up terminal function by engaging only with a stopper, without supporting one end of a coil spring.SOLUTION: A terminal arrangement of electrical machine includes a terminal screw 41 having a male screw part to which a stopper is attached, a terminal block 42 to which this terminal screw is screwed, a guide holding part 43 for guiding the stopper to advance and retreat freely for the terminal block at least when the terminal screw separates from the terminal block, and preventing withdrawal of the stopper at the terminal screw holding position, and a coil spring 45 placed in a spring arrangement part formed at one side part of the guide holding part. The coil spring includes coils 45a, 45b, first ends 45c, 45e extending from one end side of the coils, and coming into contact with a lateral face facing the guide part along the male screw part, and second ends 45d, 45f extending from the other end side of the coils, and coming into contact with a lateral part deviated from the male screw part in the face of the stopper facing the terminal block, in a state where the terminal screw is at the terminal screw holding position.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a terminal device for an electrical device that connects connection conductors.

Electrical devices such as operation switches and indicator lamps include a terminal device for connecting a connection conductor. As this terminal device, a so-called screw-up terminal is used in which a terminal screw is pushed up by using a spring force in order to facilitate connection of connection conductors.
As this screw up terminal, what was described, for example in patent document 1 is proposed.
The screw-up terminal described in Patent Document 1 has a terminal cover formed in an L-shaped cross section with a holding portion and an insulating portion connected to the terminal cover, and a terminal plate for screwing a terminal screw facing the holding portion. The terminal screw is composed of a male screw portion, a head portion having a driver groove, and a neck portion that is provided between the male screw portion and the head portion and is loosely fitted with a fastening member for fastening the connection conductor. Is formed in a substantially L shape in side view from the gold main body and the display piece. Then, a torsion coil spring is attached to the inner surface of the insulating portion on the holding portion side. One end of the torsion coil spring is held by the insulating portion, and the other end is disposed so as to engage with the terminal screw and the display portion.

  That is, the other end of the torsion coil spring is engaged with the side surface of the display portion when the terminal screw is screwed to the terminal plate through the terminal portion of the connecting conductor, and the terminal screw is loosened from the terminal plate from this state. Thus, when the abutment and the display portion are raised, the side surface of the display portion is engaged with the lower surface of the award portion, and the terminal screw head is held in contact with the holding portion.

Japanese Utility Model Publication No. 6-68312

By the way, in the terminal device described in Patent Document 1, the other end of the torsion coil spring is engaged with the bottom surface of the terminal screw at the timing when the terminal screw comes out of the terminal plate, and the head of the terminal screw is moved. It can hold | maintain in the state contact | abutted to the holding | maintenance part, and acts as a screw up terminal. However, the terminal device described in Patent Document 1 has a problem that it is necessary to fix and support one end of the torsion coil spring on the insulating portion. In addition, when the terminal screw is tightened to the terminal plate through the terminal of the connecting conductor, it is necessary to receive the display portion so that the other end of the torsion coil spring does not engage the head side of the terminal screw. If not provided, there is a problem that it cannot be applied.
Therefore, the present invention has been made paying attention to the problems of the prior art described in the above-mentioned Patent Document 1, and does not support one end of the coil spring, and engages only with the gold and functions as a screw-up terminal. It aims at providing the terminal device of the electric equipment which can demonstrate.

  In order to achieve the above object, a terminal device for an electrical device according to an aspect of the present invention includes a terminal screw having a male screw portion to which a metal fitting is attached, a terminal plate to which the terminal screw is screwed, and at least a terminal screw. Is formed on one side of this guide holding part, which guides the gold so that it can move forward and backward with respect to the terminal board and prevents the gold from coming out at the terminal screw holding position. A coil spring arranged in the arranged spring arrangement part, the coil spring extending from one end side of the coil part and the coil part, and contacting the side surface facing the guide part along the male screw part. Extending from the other end side of the coil portion and the coil portion, the terminal screw is in contact with a side portion that is disengaged from the male screw portion on the surface facing the terminal plate of the gold in a state where the terminal screw is in the terminal screw holding position. 2 ends.

  According to one aspect of the present invention, the second end of the coil spring that holds the terminal screw at the terminal screw holding position is disposed so as to be in contact with the side portion that is disengaged from the male screw portion. The length can be set long, and the second end can be brought into contact with the abutting member from the terminal screw holding position of the terminal screw to the connection conductor connection position. For this reason, it is not necessary to provide the support part which supports a coil spring, and can make a terminal device a simple structure.

1 is a perspective view showing a terminal device according to an embodiment of the present invention by cutting out one side surface thereof. It is a perspective view which shows the state which inserted the terminal of the connection conductor of the terminal device of FIG. It is a perspective view which shows the state which fixed the connection conductor of the terminal device of FIG. It is an expanded sectional view which shows a terminal device. It is an expanded sectional view which shows the connection operation | movement of the connection conductor to a terminal device. It is a perspective view which shows a coil spring.

  Next, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

Further, the embodiment described below exemplifies an apparatus and a method for embodying the technical idea of the present invention, and the technical idea of the present invention is the material, shape, structure, The layout is not specified as follows. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.
Hereinafter, an embodiment in which the terminal device according to the present invention is applied to an operation switch will be described.
As shown in FIG. 1, the operation switch 1 includes an operation unit 2, a connecting base 3, and a contact unit 4.

  The operation unit 2 opens and closes the contact of the contact unit 4, and includes an operation unit main body 11, a push button 12, and a mounting nut 13. The operation portion main body 11 includes a cylindrical head portion 11a that slidably supports the push button 12, and a connecting body portion 11b that protrudes from the head portion 11a to the opposite side of the push button 12. A male threaded portion 11c is formed on the coupling body 11b on the head 11a side, and a mounting nut 13 is screwed into the male threaded portion 11c. The connecting nut 11b is inserted into a through-hole formed in the mounting panel (not shown) and the connecting base 3 is mounted on the end protruding from the mounting panel. By making the contact, the operation switch 1 can be fixed to the mounting panel.

The connection base 3 connects the operation part 2 and the contact part 4, is detachably attached to the body part 11 b of the operation part 2, and the contact part 4 is attached to the opposite side of the operation part 2. .
The contact portion 4 includes three contact units 5A, 5B, and 5C each having an open / close contact mechanism. In this case, it is not always necessary to provide three contact units, and one to three contact units can be used according to the purpose of use.

Since each of the contact units 5A to 5C has the same structure, the internal structure will be described with the contact unit 5A as a representative.
As shown in FIGS. 2 and 3, the contact unit 5 </ b> A includes a contact frame 21 attached to the connection base 3 and a contact case 22 attached to the opposite side of the contact frame 21 from the connection base 3. I have.

The contact frame 21 holds a movable contact 23 at the center, and holds a movable contact holder 24 that is interlocked with the push button 12 of the operation unit 2 so as to be slidable to the left and right.
The contact case 22 has a pair of fixed contacts 25a and 25b that are arranged at a predetermined distance in the vertical direction facing the movable contact 23, and 26A and 26B connected to the fixed contacts 25a and 25b. It has. A contact mechanism 27 is constituted by the pair of fixed contacts 25 a and 25 b and the movable contact 23. In the present embodiment, the movable contact 23 has a configuration of a contact (normally open contact) separated from the fixed contacts 25a and 25b in a state where the push button 12 is not pressed, but the push button 12 is pressed. In a state in which the movable contact 23 is not in contact with the fixed contacts 25a and 25b, the b contact (normally closed contact) may be used.

The terminal devices 26A and 26B are for connecting a connection terminal 32 attached to the tip of a connection cable 31 as an external connection conductor shown in FIGS. 2 and 5, and have a screw-up terminal configuration.
Since the terminal devices 26A and 26B are configured to be symmetrical with respect to each other, the configuration of the terminal device 26A will be described. As shown in an enlarged view in FIG. 4, the terminal device 26 </ b> A includes a terminal screw 41, a terminal plate 42, a guide holding portion 43, a spring mounting portion 44, and a torsion coil spring 45.

The terminal screw 41 includes a head portion 41a, a male screw portion 41b integrally connected to the head portion 41a, and a disc spring 41c and an abutment 41d attached to the head portion 41a side of the male screw portion 41b. The metal 41d is for tightening the connection terminal 32 and is fitted to the head 41a side of the male screw portion 41b without falling off.
The terminal plate 42 is formed in a rectangular plate shape, one end is integrally connected to the fixed contact 25a, and the other end is bent and held in a support recess 21a formed in the contact frame 21 by bending, for example, 90 degrees. The plate surface is inclined to the lower left. The terminal plate 42 is formed with a female screw portion 42 a into which the male screw portion 41 b of the terminal screw 41 is screwed. An insertion hole 22 a through which the connection terminal 32 of the connection cable 31 is inserted is formed in the extended contact point case 22 of the terminal plate 42.

The guide holding portion 43 is formed to extend to the right end side in a direction perpendicular to the right surface of the terminal plate 42 of the contact case 22, and the abutment 41 d of the terminal screw 41 is perpendicular to the terminal plate 42. Guide to move freely.
The guide holding portion 43 includes a side wall 43a formed on the inner surface of the lower side surface portion 22b in which the insertion hole 22a of the contact case 22 is formed, extending obliquely downward to the right in a direction perpendicular to the terminal plate 42, and the contact case 22 A side wall 43b that extends in a direction perpendicular to the terminal plate 42 obliquely from the left end of the partition wall 22c formed integrally with the partition wall 22c separated from the contact mechanism 27 is provided.

Here, as for the side wall 43a, the edge part by the side of the terminal board 42 is formed to the opening part of the penetration hole 22a. A stopper piece 43c with which the abutment 41d abuts is disposed at the end of the side wall 43a opposite to the terminal plate 42 side. On the other hand, a spring mounting portion 44 is formed between the partition wall 22c and the side wall 43b.
The spring mounting portion 44 includes an upper side wall 44a parallel to the partition wall 22c, a protruding portion 44b projecting downward to the left end side of the partition wall 22c of the upper side wall 44a, an opening portion 44c provided on the side wall 43b, and the opening portion. A lower side wall 44d extending in parallel with the upper side wall 44a from the right end side of 44c and a projecting portion 44e protruding from the lower side wall 44d toward the upper side wall 44a are formed in a substantially triangular shape.

  Here, the width of the opening 44c in the front-rear direction (that is, the direction orthogonal to the paper surface in FIG. 4) is a length that allows insertion of second ends 45d and 45f of a torsion coil spring 45 described later. It is narrower than the width in the front-rear direction of the gold 41d. Therefore, the side wall 43b can guide the abutment 41d of the terminal screw 41 with respect to the terminal plate 42 so as to advance and retract even at the position of the opening 44c.

A torsion coil spring 45 is mounted on the spring mounting portion 44. As shown in FIG. 6, the torsion coil spring 45 has a pair of coil portions 45 a and 45 b that are arranged on a straight line in the front-rear direction and separated by a predetermined distance. The coil part 45a is left-handed and the coil part 45b is right-handed.
The coil portion 45a is formed with a first end portion 45c extending leftward in the tangential direction from the inner end and a second end portion 45d extending downward from the outer end of the coil portion 45a. The second end portion 45d includes a rod portion 45d1 that extends to the left in the tangential direction from the outer end of the coil portion 45a, a rod portion 45d2 that is bent 90 degrees from the tip of the rod portion 45d1 and extends downward, and this rod. 45d3 which is bent slightly to the left from the lower end of the portion 45d2 and extends obliquely downward, and a rod portion which is bent 90 degrees from the lower end of the rod portion 45d3 and away from the male screw portion 41b of the terminal screw 41, ie, extending forward 45d4.

  The coil portion 45b is formed with a first end portion 45e extending leftward from the inner end and a second end portion 45f extending downward from the outer end of the coil portion 45b. The second end portion 45f includes a rod portion 45f1 that extends to the left in the tangential direction from the outer end of the coil portion 45b, a rod portion 45f2 that is bent 90 degrees from the tip of the rod portion 45f1 and extends downward, and this rod. The rod portion 45f3 is bent slightly to the left from the lower end of the portion 45f2 and extends obliquely downward, and the rod portion 45f4 is bent 90 degrees from the lower end of the rod portion 45f3 and extended backward.

The first end 45c and the left end of the first end 45e are connected and integrated by a connecting portion 45g to form a torsion coil spring 45 having two coil portions 45a and 45b. . Here, the interval between the second end portions 45d and 45f is set to be larger than the outer diameter of the male screw portion 41b of the terminal screw 41 and narrower than the width of the abutting metal 41d.
As shown in FIG. 5, the torsion coil spring 45 has a rod 45d2 and a second end 45f of the second end 45d with respect to the first ends 45c and 45e, as shown in FIG. The rod portion 45f2 is set to be approximately 90 degrees.

In the torsion coil spring 45, the coil portions 45a and 45b are inserted into the spring mounting portion 44 in a space surrounded by the upper side wall 44a, the lower side wall 44d and the protruding portion 44e, and the first end portions 45c and 45e are inserted into the upper side wall. The second end portions 45d and 45f are projected to the guide holding portion 43 side through the opening portion 44c.
The second end portions 45 d and 45 f of the torsion coil spring 45 have terminal screw holdings in which the terminal screw 41 is separated from the terminal plate 42 and the abutment 41 d is in contact with the stopper piece 43 c of the guide holding unit 43. In this state, the metal plate 41d is in contact with the front / rear position sandwiching the male thread portion 41b of the protrusion 41e extending in the front / rear direction formed on the surface facing the terminal plate 42 of the metal 41d. In this state, a rod portion 45d4 bent forward of the second end portion 45d of the torsion coil spring 45 and a rod portion 45f4 bent rearward of the second end portion 45f are formed on the metal 41d. It abuts on a protrusion 41f extending in the front-rear direction.

Next, the operation of the above embodiment will be described with reference to FIG.
First, as shown in FIG. 5 (a), the terminal screw 41 is separated from the terminal plate 42, and the second end portions 45d and 45f of the torsion coil spring 45 are attached in the direction in which the metal 41d is separated from the terminal plate 42. It is assumed that the contact 41d is in the terminal screw holding position where it abuts against the stopper piece 43c. At this terminal screw holding position, a gap is formed between the tip of the male screw portion 41 b of the terminal screw 41 and the terminal plate 42 so that the connection terminal 32 of the connection cable 31 can be inserted. At this time, the second ends 45d and 45f of the torsion coil spring 45 are in contact with the metal 51d so that the male screw 41b is sandwiched between the front and back, so that the metal 51d is not inclined and is parallel to the terminal plate 42. Retained.

In addition, the bar portion 45d4 bent to the front of the second end portion 45d of the coil spring 45 and the bar portion bent to the rear of the second end portion 45f of the protrusion 41e extending in the front-rear direction of the metal 41d. Since 45f4 is in contact, the gold 41d can be held more stably.
With the terminal screw 41 in the terminal screw holding position, as shown in FIG. 5 (a), the connection terminal 32 of the connection cable 31 is opposed to the insertion hole 22a of the contact case 22 from the lower left side, and this posture is changed. The connection terminal 32 of the connection cable 31 is moved obliquely upward to the right. As a result, the connection terminal 32 is inserted into the gap between the terminal plate 42 and the end portion of the male screw portion 41b of the terminal screw 41 through the insertion hole 22a. And the center of the through-hole 32a formed in the connection terminal 32 shall be in the state which substantially corresponds with the center of the external thread part 41b.

  In the inserted state of the connection terminal 32 of the connection cable 31, as shown in FIG. 5B, for example, a screwdriver is inserted from the opening 22 d facing the head 41 a of the terminal screw 41 of the contact case 22 to insert the terminal screw. After engaging the engaging groove of the head 41 a of the terminal 41, the terminal screw 41 is twisted and pushed against the torsional force of the coil spring 45 toward the terminal plate 42, and the male screw portion 41 b is inserted into the female screw of the terminal plate 42. It abuts on the part 42a. At this time, in the torsion coil spring 45, the second end portions 45d and 45f rotate counterclockwise around the coil portions 45a and 45b, and the coil portions 45a and 45b are respectively wound up. For this reason, the coil diameter of coil part 45a and 45b becomes short.

  In this state, as shown in FIG. 5 (c), the screwdriver is rotated so that the male screw portion 41 b of the terminal screw 41 is screwed into the female screw 42 a of the terminal plate 42, and the metal 41 d is connected to the connecting terminal 32 of the connecting cable 31. The terminal screw 41 is tightened so as to generate an elastic force in a direction away from the terminal plate 42 by the disc spring 41c. Accordingly, the connection terminal 32 of the connection cable 31 can be fixed between the metal 41d of the terminal screw 41 and the terminal plate 42.

  At this time, by screwing the male screw portion 41b of the terminal screw 41 with the female screw portion 42a of the terminal plate 42, the head portion 41a of the terminal screw 41 is moved to the terminal plate 42 side. Move to the plate 42 side. For this reason, the second end portions 45d and 45f of the torsion coil spring 45 are in contact with the protrusions 41e formed on the opposing surfaces of the rod portions 451d4 and 45f4 of the tip 41d of the metal plate 41d. From the state, the intermediate bar portions 45d2 and 42f2 come into contact with the end portion of the metal 41d, and finally, as shown in FIG. 5C, the connecting portions of the bar portions 45d3 and 45d4 and the bar portion 45f3 and The connection part of 45f4 will be in the state which contacts the corner | angular part of the upper surface of this money 41d. Also in this case, the coil portions 45a and 45b of the torsion coil spring 45 are wound and the coil diameter is minimized.

  Thus, in the state where the connection terminal 32 of the connection cable 31 is sandwiched between the contact 41d of the terminal screw 41 and the terminal plate 42, the rod portions 45d3 and 45d4 of the second end 45d of the torsion coil spring 45 are connected. And the connecting portion of the rod portions 45f3 and 45f4 of the second end portion 45f are in contact with the corner portion of the upper side surface of the metal 41d. In addition, the thickness of the connection terminal 32 of the connection cable 31 is set to be thinner than the thickness of the abutment 41d.

  For this reason, in a state where the connection terminal 32 of the connection cable 31 is not inserted, the male screw portion 41 b of the terminal screw 41 is screwed into the female screw portion 42 a of the terminal plate 42, and the metal 41 d comes into direct contact with the terminal plate 42. However, the rod portion 45d4 of the second end portion 45d and the rod portion 45f4 of the second end portion 45f of the torsion coil spring 45 come into contact with the upper end portion of the metal 41d. It is possible to prevent the second end portions 45d and 45f from coming off from the gold 41d.

  To remove the connection terminal 32 of the connection cable 31 from the fixed state of the connection terminal 32 of the connection cable 31, by rotating the terminal screw 41 counterclockwise with a screwdriver in the state of FIG. The head 41 a of the terminal screw 41 moves in a direction away from the terminal plate 42. At this time, the gold 41d also moves away from the terminal plate 42 in the same manner as the head 41a, so that the second ends 45d and 45f of the torsion coil spring 45 are connected to the upper ends of the gold 41d. The rod portions 45d3 and 45f3 are opposed to each other in the surface of the metal plate 41d facing the terminal plate 42 while being in contact with the corner portion.

  For this reason, as shown in FIG. 5B, the rod 45d2 of the second end 45d of the torsion coil spring 45 in a state in which the male screw 41b of the terminal screw 41 is detached from the female screw 42d of the terminal plate 42. And the connection part of 45d3 and the connection part of the bar parts 45f2 and 45f3 of the 2nd end part 45f are contacting the protrusion 45e of the metal 41d. Therefore, in this state, by removing the screwdriver from the head portion 41a of the terminal screw 41, the torsional force of the torsion coil spring 45 moves the metal 41d away from the terminal plate 42, and the terminal screw 41 returns to the terminal screw holding position.

  Thus, according to the above embodiment, the torsion coil spring 45 contacts the terminal screw 41 in the state where the terminal screw 41 is in the terminal screw holding position where the terminal screw 41 is separated from the terminal plate 42 and the contact piece 41d is in contact with the stopper piece 43c. A surface of the gold 41d facing the terminal plate 42 is supported. The torsion coil spring 45 has two coil portions 45a and 45b, first end portions 45c and 45e provided at one end of each of the coil portions 45a and 45b, and second end portions 45d and 45f provided at the other end. The first end portions 45c and 45e are in contact with the upper side wall 44a of the spring mounting portion 44, and the second end portions 45d and 45f are in contact with the surface of the terminal screw 41 facing the terminal plate 42 of the metal 41d. .

Therefore, when the terminal screw 41 is pushed into the terminal plate 42 side or screwed into the terminal plate 42, the second end portions 45d and 45f move to the first end portions 45c and 45e side, thereby A force pressing the ends 45c and 45e against the upper side wall 44a acts.
For this reason, it is not necessary to provide a support portion so that the torsion coil spring 45 does not move, it is only necessary to arrange the torsion coil spring 45 in the spring mounting portion 44, and it is not necessary to separately arrange a support member. .

In addition, since the second end portions 45d and 45f of the torsion coil spring 45 are provided at positions away from the male screw portion 41b of the terminal screw 41 in the front-rear direction, the length is not affected by the male screw portion 41b. Can be lengthened.
For this reason, while the terminal screw 41 moves from the terminal screw holding position to the position where the connection terminal 32 of the connection cable 31 is fixed, the rod portions 45d4 and 45f4 at the tip portion or the rod portions 45d2 and 45f2 at the center portion are moved to the terminal screw 41. Therefore, there is no need to separately provide a member for restricting the rotation of the second end portions 45d and 45f. Therefore, the configuration of the terminal devices 26A and 26B can be simplified and the size can be reduced. Furthermore, assembly work is also facilitated.

  The coil portions 45a and 45b of the torsion coil spring 45 are tightened as the second end portions 45d and 45f move when the terminal screw 41 moves from the terminal screw holding position toward the terminal plate 42. It is wound to be For this reason, the coil diameter of the coil parts 45a and 45b becomes the maximum diameter at the terminal screw holding position, and the coil diameter decreases as the terminal screw 41 moves toward the terminal plate 42. Therefore, the size of the storage portion for storing the coil portions 45a and 45b of the spring mounting portion 44 can be reduced as compared with the case where the coil portions 45a and 45b are rolled up by the movement of the second end portions 45d and 45f. it can.

  That is, when the coil portions 45a and 45b are wound in the reverse direction to the above embodiment, the coil diameter increases as the second end portions 45d and 45f move toward the first end portions 45c and 45e. Therefore, the size of the storage portion of the coil portion is designed with the coil diameter when the second end portions 45d and 45f are closest to the first end portions 45c and 45e. growing.

  In addition, although the said embodiment demonstrated the case where the 1st end parts 45c and 45e of the two coil parts 45a and 45b were connected by the connection part 45g as the torsion coil spring 45, it is limited to this. Instead, even if the connecting portion 45g is divided at the intermediate portion to form two torsion coil springs and these are respectively attached to the spring mounting portion 44, the same effect as in the above embodiment can be obtained. .

Further, one of the divided torsion coil springs may be omitted, and the abutment 41d of the terminal screw 41 may be supported by a torsion coil spring having one coil portion.
Moreover, although the said embodiment demonstrated the case where the coil parts 45a and 45b became a winding direction, it is not limited to this, The coil parts 45a and 45b can also be made into a winding-up direction.

  Moreover, although the said embodiment demonstrated the case where the inner side of the two coil parts 45a and 45b was made into the 1st end parts 45c and 45e, and the outer side was made into the 2nd end parts 45d and 45f, it is not limited to this. Alternatively, the outer sides of the coil portions 45a and 45b may be the first end portions 45c and 45e, and the inner side may be the second end portions 45d and 45f. In this case, when the second end portions 45d and 45f are in contact with the male screw portion 41b of the terminal screw 41, the intermediate rod portions 45d2 and 45f2 may be inclined outward so as to avoid the male screw portion 41b.

  Moreover, although the said embodiment demonstrated the case where a terminal device was applied to a pushbutton switch, it applies not only to this but as a terminal device of various electric equipments, such as a changeover switch, an indicator lamp, an electromagnetic contactor, and an electromagnetic relay. be able to. In this case, the presence or absence of the contact portion does not matter.

  DESCRIPTION OF SYMBOLS 1 ... Operation switch, 2 ... Operation part, 3 ... Connection base, 4 ... Contact part, 5A-5C ... Contact unit, 21 ... Contact frame, 22 ... Contact case, 22a ... Insertion hole, 26A, 26B ... Terminal device, DESCRIPTION OF SYMBOLS 31 ... Connection cable, 32 ... Connection terminal, 41 ... Terminal screw, 41a ... Head, 41b ... Male screw part, 41c ... Belleville spring, 41d ... Gold, 42 ... Terminal board, 42a ... Female screw part, 43 ... Guide holding part 43a, 43b ... side wall, 43c ... stopper piece, 44 ... spring mounting part, 45 ... torsion coil spring, 45a, 45b ... coil part, 45c, 45e ... first end part, 45d, 45f ... second end part , 45g ... connecting part

Claims (6)

A terminal screw having a male thread part with a metal fitting, and
A terminal plate to which the terminal screw is screwed;
A guide holding portion that guides the gold so that it can move forward and backward with respect to the terminal plate from at least when the terminal screw is separated from the terminal plate, and prevents the gold from coming out at the terminal screw holding position;
A coil spring disposed in a spring mounting portion formed on one side of the guide holding portion,
The coil spring extends from one end side of the coil portion, a first end contacting the side surface facing the guide holding portion along the male screw portion, and extending from the other end side of the coil portion. And a second end portion in contact with a side portion of the metal facing the terminal plate in a state where the terminal screw is located at the terminal screw holding position. Terminal equipment.   The terminal device for an electric device according to claim 1, wherein a pair of the coil springs are provided across a male screw portion of the terminal screw.   The terminal device for an electrical device according to claim 2, wherein the first end portions of the pair of coil springs are connected to each other.   The first end portion and the second end portion of the coil portion are connected so that the terminal screw is in a tightening direction when moving from the terminal screw holding position toward the direction in which the male screw portion is screwed to the terminal plate. The terminal device for an electric device according to any one of claims 1 to 3, wherein the terminal device is an electric device.   5. The terminal device for an electrical device according to claim 1, wherein the spring mounting portion includes a storage portion that stores a coil portion of the coil spring.   The terminal device for an electrical device according to any one of claims 1 to 5, wherein a rod portion bent in a direction away from the male screw portion is formed at a tip of the second end portion.

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