WO2001073897A1

WO2001073897A1 - Terminal device

Info

Publication number: WO2001073897A1
Application number: PCT/JP2001/002518
Authority: WO
Inventors: Takashi Ishii; Masashi Fujimoto; Shigeki Makimoto; Shigetoshi Fujitani; Masami Takeda; Yasuo Oonishi; Atsushi Matsumoto
Original assignee: Idec Izumi Corporation
Priority date: 2000-03-29
Filing date: 2001-03-27
Publication date: 2001-10-04

Abstract

A terminal device, comprising a first terminal (2), a washer (3), an energizing means (4), and a pivot (5), wherein a screw hole (2a) allowing one end (1a) of a screw (1) to be threaded therein is formed in the first terminal (2), the washer (3) holds the screw (1) rotatably, the energizing means (4) provides an energizing force to depart the screw (1) from the screw hole (2a) to the washer (3), the pivot (5) controls the other end (3b) side position of the washer (3) while the screw (1) is departed from the screw hole (2a) by the energizing force, and a second terminal (906) is inserted between the screw (1) and the first terminal (2) from the outside with the screw (1) separated from the screw hole (2a) and the screw hole (1) is threaded into the screw hole (2a) with a tool so as to electrically connect the first terminal (2) to the second terminal (906), whereby the terminal device can be downsized while assuring an insert port of a size sufficient to easily insert the terminal from the outside.

Description

^ Description Terminal equipment

Technical field

The present invention relates to a terminal device.

Background art

FIG. 12 is a sectional view showing a conventional contact block (terminal device) E9. FIG. 13 is a partial side sectional view of the structure of FIG. 12 as viewed from the direction in which the second terminal 906 is inserted. The reference numerals in FIG. 13 correspond to those in FIG.

How to use the conventional contact block E9 will be described. First, insert the second terminal 906 from the outside into the insertion port W between the tip of the screw 901 and the first terminal 902, rotate the screw 901 with a dryno (not shown), The screw 901 is screwed into the screw hole 902 a of the first terminal 902, and the second terminal 906 is sandwiched between the washer 903 and the first terminal 902. Thus, the first terminal 902 and the second terminal 906 are electrically connected. In this state, screw 901 is reversely rotated with a screwdriver, and screw 901 is removed from screw hole 902a. The coil panel 900 in Fig. 13 applies biasing force to the washer 903 to separate the screw 901 from the screw hole 902a, so when the screw 901 comes out of the screw hole 902a, It is separated from the first terminal 902 together with the washer 903. As a result, the second terminal 906 is released from the first terminal 902.

Since the conventional contact block E9 has the above configuration, the entrance W must be sufficiently wide in order to easily insert the second terminal 906. To this end, the screw 901 is sufficiently separated from the first terminal 902. However, since the screw 901 was sufficiently separated from the first terminal 902, there was a problem that the contact block E9 became large and could not be miniaturized. The present invention has been made in order to solve the above-described problems, and to provide a terminal device that can be reduced in size while securing a wide enough opening for easily inserting a terminal from the outside. The purpose is to: Disclosure of the invention

The terminal device of the present invention includes: a screw; a first terminal provided with a screw hole into which one end of the screw is screwed; a washer provided with one end for rotatably holding the screw; A biasing means for applying a biasing force to the washer separating the screw from the screw hole of the terminal; and regulating the position of the other end of the washer while the screw is separated from the screw hole of the first terminal by the biasing force. A second terminal is externally inserted between the screw and the first terminal in a state where the screw is separated from the screw hole of the first terminal, and one end of the screw is inserted by a tool. The first terminal and the second terminal are electrically connected by being screwed into a screw hole of the first terminal.

Further, in the terminal device of the present invention, the position of the other end of the washer is regulated by the fulcrum at the same time that the screw comes off the screw hole of the first terminal.

Further, in the terminal device of the present invention, another device is mounted on a side of the fulcrum opposite to the washer.

Further, in the terminal device of the present invention, the screw is a Phillips screw. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic diagram showing a terminal device of the present invention.

FIG. 2 is a schematic diagram showing the terminal device of the present invention.

FIG. 3 is a schematic diagram showing a terminal device of the present invention.

FIG. 4 is a perspective view showing a contact block according to Embodiment 1 of the present invention. FIG. 5 is a front sectional view showing the contact block according to the first embodiment of the present invention. FIG. 6 is a top view showing a sems according to the first embodiment of the present invention.

FIG. 7 is a side view showing a sems according to the first embodiment of the present invention.

FIG. 8 is a side view showing an application example of the contact block according to the first embodiment of the present invention.

FIG. 9 is a side view showing an application example of the contact block according to the first embodiment of the present invention. ·

FIG. 10 is a top view showing a sems according to the second embodiment of the present invention.

FIG. 11 is a side view showing a sems according to the second embodiment of the present invention.

FIG. 12 is a front sectional view showing a conventional contact block.

FIG. 13 is a partial side sectional view showing a conventional contact block.

FIG. 14 is a side view showing an application example of a conventional contact block. BEST MODE FOR CARRYING OUT THE INVENTION

1 to 3 are schematic diagrams for explaining the principle of the terminal device of the present invention. 1 to 3 correspond to each other. First, the configuration of the terminal device of the present invention will be described. The terminal device of the present invention includes a male screw 1, a first terminal 2, a washer 3, a biasing means 4, and a fulcrum 5. The first terminal 2 is provided with a screw hole 2 a into which one end 1 a of the screw 1 is screwed. One end 3a of washer 3 holds screw 1 rotatably. The biasing means 4 is formed of, for example, a coil panel, and applies a biasing force to the washer 3 to separate the screw 1 from the screw hole 2 a of the first terminal 2. The fulcrum 5 is composed of, for example, a part of the housing M of the terminal device, and while the screw 1 is separated from the screw hole 2a of the first terminal 2 by the above-described biasing force, the other end 3b of the washer 3 is provided. Regulate position.

Next, the operation will be described in the case where the second terminal 906 is electrically connected to the first terminal 2. The screw 1 is in a state of being separated from the screw hole 2a provided in the first terminal 2. Hereinafter, such a state is called a return state (FIG. 1). _Λ

4 In the return state, the second terminal 906 is inserted from the outside between the screw 1 and the first terminal 2, and the screw 1 is rotated in the forward direction by a tool (not shown) such as a screwdriver. One end 1a is screwed into the screw hole 2a, and the second terminal 906 is sandwiched between the washer 3 and the first terminal 2. As a result, the first terminal 2 and the second terminal 906 are electrically connected (FIG. 3).

Next, a case where the second terminal 906 is opened from the first terminal 2 will be described. In the state shown in Fig. 3, the screw 1 is rotated in the reverse direction by the tool, and one end la of the screw 1 is removed from the screw hole 2a. The biasing means 4 applies a biasing force to the washer 3 to separate the screw 1 from the screw hole 2 a of the first terminal 2. As a result, when one end 1a of the screw 1 comes out of the screw hole 2a, the screw 1 together with the washer 3 is pressed by the urging force from the screw hole 2a of the first terminal 2 in the direction in which the urging force acts; Being separated. The other end 3b of the washer 3 comes into contact with the fulcrum 5 on the way (FIG. 2). As a result, the position of the other end 3b of the washer 3 is regulated by the fulcrum 5, so that the screw 1 is rotated around the fulcrum 5 together with the washer 3 by the urging force, and then the stationary member (for example, the casing) The second terminal 906 can be released from the first terminal 2 by being pressed against the M wall).

Conventionally, the screw 901 was sufficiently separated from the first terminal 902 in order to sufficiently widen the inlet W between the tip of the screw 901 and the first terminal 902. On the other hand, in the present invention, the screw 1 is rotated. Thereby, a sufficiently wide inlet W can be secured between one end 1 a of the screw 1 and the first terminal 2. Therefore, the second terminal 906 from the outside can be easily inserted between one end 1 a of the screw 1 and the first terminal 2. In addition, the distance between the other end 3b of the washer 3 and the first terminal 2 can be shortened, and an empty area S near the fulcrum 5 can be formed, so that the terminal device can be downsized.

1 to 3 are schematic diagrams, and the terminal device of the present invention is not limited to the shapes shown in FIGS. For example, the urging means 4 is illustrated as a coil panel, but may be a plate panel or a wire panel. In addition, the fulcrum 5 and the above-mentioned stationary member may be formed of a part of the housing, or may be formed of a member different from the housing. The second terminal 906 is a so-called round crimp "

In addition to wiring with 5 terminals and Y-shaped crimp terminals, it may be simple wiring without them.

An embodiment to which the above principle of the present invention is applied will be described below.

FIG. 4 is a perspective view showing a contact block (terminal device) E1 according to the first embodiment of the present invention. FIG. 5 shows a cross section of the contact block E1 viewed from the front direction Z in FIG. The reference numerals in FIG. 5 correspond to those in FIG.

The contact block E1 includes a terminal mechanism M1, M2, a switch mechanism M3, and a housing M4, and has a symmetric structure with respect to a center line C-C.

First, the terminal mechanism M1 will be described. Since the terminal mechanism M2 has the same configuration as the terminal mechanism Ml, the description is omitted.

The terminal mechanism M1 includes a negative male screw 101, fixed terminal 102, washer 103, coil panel 104, and fulcrum 105. Screw 101, fixed terminal 102, washer 103, coil panel 104, fulcrum 105 is screw 1, first terminal 2, washer 3, urging means 4, fulcrum 5 in Fig. 1, respectively. It corresponds to. In addition, the coil panel 104 may be a leaf spring or a wire spring in addition to the illustration.

The screw 101 and the fixed terminal 102 are provided in an internal space (hereinafter, referred to as a Sems moving space) M S1 of the housing M4. In the Sems moving space M S1, an elongated and thin projection W 4 (a part of the housing M 4) is provided in the direction X in which the urging force acts. The screw 101 can move in the direction X along the convex portion W4 in the sems moving space MS1. A screw hole 102 a into which one end 101 a of the screw 101 is screwed is provided below the sems movement space MS 1. Above the Sems moving space M S1, an opening MW 1 for inserting a minus drier (not shown) as a tool is provided. An opening MW2 for inserting the second terminal 906 is provided near one end 101a of the screw 101 in the return state and the fixed terminal 102.

The screw portion of the screw 101 has a substantially cylindrical shape. The bottom of the thread (one end 101a) is circular and perpendicular to the side of the thread. The top view and the side view of the screw 101 and the washer 103 are shown in FIGS. 6 and 7, respectively (the reference numerals in FIGS. 6 and 7 correspond to those in FIG. 5. One end 1 of the washer 103). On the 03a side, a through hole 103h is provided, and the screw 101 passes through the through hole 103h with play. One end 103 of the 3 a side rotatably holds the screw 101. Further, the screw 101 is configured so as not to fall off from the washer 103. The configuration consisting of washers 103 is called sems.

Returning to FIG. 5, one end of the coil spring 104 is in contact with the other end 103 b of the washer 103, and the other end is in contact with the inner wall of the housing M 4. As a result, the coil panel 104 applies a biasing force to the washer 103 to separate the screw 101 from the screw hole 102a of the fixed terminal 102. The fulcrum 105 is formed by a part of the housing M4, and the screw 101 is being separated from the screw hole 102a of the fixed terminal 102 by the urging force. Limit the position of end 103 b.

Next, the operation of the terminal mechanism M1 is the same as that described in the principle of the invention.c That is, first, the case where the second terminal 906 is electrically connected to the fixed terminal 102 is described. explain. In the return state, the screw 101 is held apart from the fixed terminal 102. In the return state, insert the second terminal 906 from the outside through the opening MW2 between the screw 101 and the fixed terminal 102. On the other hand, the screw 101 is rotated in the forward direction from the outside through the opening MW 1 by the driver, and one end 101 a of the screw 101 is screwed into the screw hole 102 a, and the second terminal 90 6 is sandwiched between the washer 103 and the fixed terminal 102. As a result, the fixed terminal 102 and the second terminal 906 are electrically connected.

Next, a case where the second terminal 906 is opened from the fixed terminal 102 will be described. Use a screwdriver to rotate the screw 101 in the reverse direction, and remove one end 101 a of the screw 101 from the screw hole 102 a. The coil spring 104 applies a biasing force to the washer 103 to separate the screw 101 from the screw hole 102 a of the fixed terminal 102. By this, When one end 101 a of the screw 101 comes off the screw hole 102 a, the screw 101 is pulled away in the direction X by the urging force of the coil panel 104 together with the washer 103. Then, on the way, the other end 103 b of the washer 103 comes into contact with the fulcrum 105. As a result, the position of the other end 103 of the washer 103 is restricted by the fulcrum 105. The screw 101 rotates around the fulcrum 105 together with the washer 103 by the urging force. Then, it is pressed against the inner wall of the housing M4 and stops.

Also, even when the second terminal 906 is attached to the screw 101, the screw 101 is rotated to move the second terminal 906 to the inner wall of the opening MW2 of the housing M4. By hitting W2, the second terminal 906 is more securely removed from the screw 101.

Conventionally, the screw 901 was sufficiently separated from the first terminal 902 in order to sufficiently widen the inlet W between the tip of the screw 901 and the first terminal 902. On the other hand, in the first embodiment, the screw 101 is rotated. As a result, it is possible to secure a sufficiently large 揷 entrance W between one end 101 of the screw 101 and the fixed terminal 102 <Therefore, the second terminal 90 from the outside can be secured. 6 can be easily inserted between one end 101 a of the screw 101 and the fixed terminal 102. Moreover, the distance between the other end 103 b of the washer 103 and the fixed terminal 102 can be shortened, and the contact block E 1 can be reduced in size.

Based on the rotation of the screw 101 described above, the contact block E1 in FIG. 5 could be obtained from the conventional structure in FIG. 12 as follows.

First, in the contact block E1, the screw 101 comes out of the screw hole 102a of the fixed terminal 102, and at the same time, the other end 103b of the washer 103 comes to the point 105. It is configured to be regulated by Specifically, the dimension L1 in the direction X from the fulcrum 105 to the fixed terminal 102, and the dimension from the other end 103b of the washer 103 to one end la of the screw 101 L 2 (FIG. 7) should be almost equal. As a result, as shown in FIG. 2, the distance L3 between the one end 1a of the screw 1 immediately before the rotation and the first terminal 2 can be omitted, and the contact block E1 can be reduced in size. Can be achieved. By reducing the size and omitting the distance L3 by the above rotation, the dimension of the coil panel 904 in FIG. 13 in the direction of expansion and contraction is adjusted to fit in the area S1 (FIG. 12) above the first terminal 902. did. However, since the washer 903 extends below the screw 901 as shown in FIG. 13, the coil spring 904 cannot be arranged in the region S1. Therefore, as shown in FIG. 7, the other end 103 b of the washer 103 was bent so as to be located on the other end 101 b of the screw 101. The other end 1, 0 3 b side of the washer 1 0 3 is bent to the other end 1 0 1 b side of the screw 1 0 1, and the coil spring 10 4 is positioned from one end 10 1 a side of the screw 10 1 Move to the other end 101b side. This allows the coil panel 104 to be arranged in the region above the fixed terminal 102.

Since the coil spring 104 was arranged in the area above the fixed terminal 102, the thickness L4 (FIG. 4) of the contact block E1 was shortened. Therefore, when a plurality of contact blocks are used in a stack, the entire device can be accommodated in a limited short dimension L6, but conventionally only two, for example, as shown in Fig. 14, can be accommodated. In form 1, as shown in Fig. 8, three contact blocks: E1 can be stored. The reference numerals in FIG. 8 correspond to those in FIG. M5 is a switch for operating a plurality of contact blocks E1. For example, the switch M5 is a push button switch for simultaneously turning on or off a plurality of contact blocks E1 described later.

Further, in the production of the contact block E1, the sems (the screw 101 and the washer 103), the fixed terminal 102 and the coil panel 104 can be assembled from the front direction Z (FIG. 4). At this time, the coil spring 104 is assembled in the sems moving space MS1 in a contracted state.However, the coil spring 104 is shorter than the conventional coil spring 904, so that, for example, the coil spring 104 is bent in an L shape. It is hard to cause trouble.

Also, as shown in FIG. 7, since the other end 103 b of the washer 103 does not exist around the screw portion of the screw 101, when manufacturing the sems, the washer 103 is screwed to the screw 103. To 1 _A thread can be formed on the screw 101 by rolling while _Q- threaded. This makes it easier to manufacture sems and reduces costs.

In addition, since the coil panel 104 is arranged in the region above the fixed terminal 102, the second terminal 906 may enter the coil panel 104 when inserted into the opening MW2. In order to prevent this, a partition wall W1 (part of the housing M4) that covers the coil panel 104 is provided. The partition wall W1 is dimensioned so as not to hinder the movement of the washer 103. By providing the partition wall W 1, the coil panel 104 can be protected from the second terminal 906. Also, when the screw 101 rotates, the second terminal 906 hits the inner wall W2 of the opening MW2 of the housing M4 and is surely removed from the screw 101. However, the IEC (International Electrotechnical Commission: International In consideration of the IP20 standard of the Electricity Standards Council), the frame W should be sufficiently thick so that no one's finger touches the other end 101b of the screw 101 in the restored state. 3 (part of the housing M4) surrounded the opening MW1. As a result, it is possible to prevent the other end 101b from being touched in the return state, and to more reliably prevent electric shock. Further, when the dimension L 7 (FIG. 12) of the conventional contact block E 9 and the dimension L 5 (FIG. 5) of the contact block E 1 of the present invention are configured to be equal, the embodiment will be described. In the case of 1, since the screw 101 is disposed inside the contact work E1 as compared with the conventional case, the frame portion W3 can be made thicker by that amount.

Next, the switch mechanism M3 will be described.

The switch mechanism M3 is arranged between the terminal mechanisms Ml and M2. The switch mechanism M3 includes an actuator 107, a spring 108 and a movable terminal 109.

The end of the fixed terminals 102 of both the actuators 107, the springs 108, and the terminal mechanisms Ml and M2 are connected to the internal space of the housing M4 (hereinafter referred to as the movable terminal moving space) MS2. It is provided. Openings MW 3, MW 4 through which the actuator 107 can pass are provided in a portion where the center line C-C of the housing M 4 passes. You can move in the direction of the center line C-C. One end of the spring 108 is fixed to the actuator 107, the other end is fixed to the housing M4, and biased in the direction from the opening MW3 to the opening MW4. Giving mosquitoes to クThe factory holds the movable terminal 109. With the above configuration, when the lower end of the actuator 107 is pushed from the outside and set in the opening MW4, the fixed terminals 102 of both the terminal mechanisms Ml and M2 come into contact with the movable terminal 109. Then, they are electrically connected to each other through the movable terminal 109, and the upper end of the actuator 107 reaches the upper part of the opening MW3 (this state is called an ON state). The lower end of the actuator 107 When the push is stopped from the outside, the upper end of the actuator 107 fits into the opening MW3 due to the biasing force of the panel 108, and both the fixed terminals 102 of the terminal mechanism MlM2 are electrically connected to each other. The lower end of the box 107 projects from the opening MW4 (this state is called the off state).

Further, as shown in FIG. 9, a plurality of contact blocks E1 can be overlapped on the center line C—C. The reference numerals in FIG. 9 correspond to those in FIG. In this case, the actuator 107 of the upper contact block E1 is inserted into the opening MW3 of the lower contact block E1. As a result, the upper and lower contact blocks E1 are interlocked with each other. When the lower contact block E1 is turned on, the upper contact block E1 is also turned on, and the lower contact block E1 is turned on. When E1 is turned off, the upper contact block E1 is also turned off. In addition, the upper contact block E1 is formed in a free space S that can be created on the opposite side of the fulcrum 105 from the washer 103. As a result, the overall dimension in the direction of the center line C—C between the lower contact block E 1 and the upper contact block E 1 can be shortened, and the size can be reduced.

The other device mounted on the lower contact block E1 may be a device having a different configuration from the contact block E1.

Next, a second embodiment of the present invention will be described.

Since the flat screw 1 101 rotates about the fulcrum 105, as shown in Fig. 9, it does not face the front of the flat screwdriver 9 07 inserted from the direction X, but the upper contact block. E Tilt to the 1 side. Therefore, a minus driver 9 0 ^ ^

It is difficult to rotate screw 101 with 7. Therefore, as shown in FIGS. 10 and 11, the screw 101 is replaced with a male Phillips screw 101P. 10 and 11 correspond to FIGS. 6 and 7. Other configurations of the contact block E1 are the same as those of the first embodiment. Since the tip of a Phillips screwdriver 9 08 (tool) is sharply conical, it can be stabbed into the Phillips screwdriver 101P and turned obliquely, not from directly in front of the screw 101. As a result, as shown in FIG. 11, the plus screwdriver 1908 can be easily inserted into the plus screw 101P from the direction X, and can be rotated.

Note that the terminal device applied to the present invention may be any device to which a terminal is externally connected, and may be, for example, an electrical device such as a power supply device in addition to the contact work El and the pushbutton switch device E2 in FIG. Good. In particular, the present invention is effective for a device in which components are densely arranged, such as the contact block E1.

According to the present invention, when the position of the other end of the washer is regulated by the fulcrum, the screw rotates around the fulcrum together with the washer by the urging force. By this rotation, a sufficiently large insertion opening can be secured between one end of the screw and the first terminal. Thereby, the second terminal from the outside can be easily inserted between one end of the screw and the first terminal. In addition, the distance between the other end of the washer and the first terminal can be shortened, and the size can be reduced.

In addition, by rotating the screw at the same time as the screw is separated from the first terminal, the distance between one end of the screw immediately before the rotation and the first terminal can be omitted, and the size can be further reduced.

In addition, the overall dimensions of the terminal device and another device can be reduced, and the size can be reduced.

Even if the other end of the screw turns around the fulcrum and faces another device, the Phillips screwdriver can be easily inserted into the Phillips screw and rotated. Industrial applications ^ _{2 The} present invention has utility as a terminal device to which terminals are externally connected, such as a push button switch device and a power supply device.

Claims

Scope of IO billing

(1) Male screw and

A first terminal provided with a screw hole into which one end of the screw is screwed,

A washer provided with one end for rotatably holding the screw,

Biasing means for applying a biasing force to the washer for separating the screw from the screw hole of the first terminal;

While the screw is being separated from the screw hole of the first terminal by the urging force, a fulcrum that regulates the position of the other end of the washer,

With

In a state where the screw is separated from the screw hole of the first terminal, a second terminal is externally inserted between the screw and the first terminal, and one end of the screw is connected to the first terminal by a tool. A terminal device that is electrically connected to the first terminal and the second terminal by being screwed into the screw hole.

(2) The terminal device according to claim 1, wherein the position of the other end of the washer is regulated by the fulcrum at the same time that the screw is removed from the screw hole of the first terminal.

(3) The terminal device according to claim 1, wherein another device is mounted on a side of the fulcrum opposite to the washer.

(4) The terminal device according to claim 3, wherein the screw is a brass screw.