JP2010272374A - Terminal block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a terminal block capable of securing attaching/detaching workability of a crimp terminal, by eliminating a swollen portion of a cable, or the like, connected to the crimp terminal. <P>SOLUTION: The terminal block for fixing a crimp terminal is provided with a terminal inserting hole into which the crimp terminal is inserted, a core part which moves in a perpendicular direction with respect to a terminal face of the crimp terminal inserted into the terminal hole, and a screw which has a rotating axis, crossing the core part and moves the core part by rotation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a terminal block that is connected by fixing a crimp terminal with a screw or the like, and relates to a terminal block that ensures workability of attaching / detaching a crimp terminal by eliminating a protruding portion of a cable or the like connected to the crimp terminal. It is.

  The terminal block is configured to be connected by fixing a crimp terminal provided at the end of the cable to a conductive base. There are various fixing methods. In recent years, the spring type is often used, but in the case of high current products such as power supplies, there is a demand for a screw type from the viewpoint of fixing strength. Such an apparatus is shown, for example, in Patent Document 1 below.

  A configuration example of a conventional screw terminal block will be described with reference to FIG. Here, FIG. 2A is a top sectional view of the terminal block, and FIG. 2B is a front view of the terminal block. In FIG. 2, the electronic device 10 is a module of a programmable controller, for example. The terminal block 20 is attached to the front surface of the electronic device 10 and is electrically connected to the electronic device 10, and includes a pedestal 21, a plurality of screws 22, and a plurality of washers 23. The plurality of screws 22 are provided in a row in the longitudinal direction of the pedestal 21, and are screwed in a direction perpendicular to the pedestal 21. The washer 23 is provided penetrating each screw 22. The crimp terminal 30 is connected to a cable, is fixed to the pedestal 21 via a washer 23 in parallel with the front surface of the pedestal 21, and is electrically connected to the electronic device 10 via the terminal block 20.

  The operation of attaching such a device will be described. The crimp terminal 30 is attached in parallel with the front surface of the base 21. Then, the crimp terminal 30 is fixed to the pedestal 21 by passing the screw 22 with the washer 23 through the crimp terminal 30 and rotating the screw 22 in the screwing direction. Thereby, the electronic device 10 and the crimp terminal 30 are electrically connected.

Japanese Patent Laid-Open No. 7-73913

  However, in this terminal block 20, since the surface of the crimp terminal 30 is mounted horizontally with respect to the front surface of the terminal block 20, a protruding portion such as a cable connected to the crimp terminal 30 after fixing is inevitably generated, and the area of this protruding portion Must be secured. In addition, downsizing of the electronic device 10 is required, and along with this downsizing, the interface area itself for attaching the terminal block 20 is also narrowed. For this reason, when a plurality of electronic devices 10 are used in series, for example, in a module such as a programmable controller, an adjacent module is affected and the workability of attaching and detaching the crimp terminal 30 is very poor.

  Accordingly, an object of the present invention is to realize a terminal block that ensures workability of attaching and detaching a crimp terminal by eliminating a protruding portion of a cable or the like connected to the crimp terminal.

In order to achieve such a problem, the invention according to claim 1 of the present invention is:
In the terminal block that fixes the crimp terminal to the base,
A terminal insertion hole for inserting the crimp terminal;
A core that moves in a direction perpendicular to the terminal surface of the crimp terminal inserted into the terminal insertion hole;
It has a rotating shaft that intersects with the core part, and is provided with a screw that moves the core part by rotating.
Invention of Claim 2 is invention of Claim 1, Comprising:
The core has a rack;
The screw has a spur gear that meshes with the rack of the core portion.
Invention of Claim 3 is invention of Claim 1 or 2, Comprising:
A washer is provided at the tip of the core and holds the crimp terminal.
Invention of Claim 4 is invention in any one of Claims 1-3, Comprising:
It is attached to an electronic device.

  According to the present invention, the crimp terminal is inserted in a direction intersecting the front surface of the terminal block, and the screw having the rotation axis in the direction intersecting the front surface of the terminal block is rotated, thereby being perpendicular to the terminal surface of the crimp terminal. By moving the core portion in the direction and fixing the crimp terminal, the protruding portion of the cable or the like connected to the crimp terminal can be eliminated, and the workability of attaching / detaching the crimp terminal can be ensured.

It is the block diagram which showed one Example of this invention. It is the block diagram which showed the conventional terminal block.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. (A) is a top sectional view of the terminal block, (b) is a front view of the terminal block.

  First, the configuration of the terminal block according to the embodiment of the present invention will be described. In FIG. 1, an electronic device 1 is, for example, a programmable controller module, a temperature controller, a measuring instrument, a control device, or the like. The terminal block 2 is attached to the front surface of the electronic device 1 and is electrically connected to the electronic device 1, and includes a pedestal 3, a plurality of terminal insertion holes 4, a plurality of core portions 5, a plurality of washers 6, and a plurality of screws 7. Have. The plurality of terminal insertion holes 4 have holes formed in the front vertical direction of the pedestal 3 and have a substantially rectangular cross section in which the longitudinal direction of the pedestal 3 is the longitudinal direction, and are formed in a row in the longitudinal direction of the cross section. . The core portion 5 is formed with a rack in the longitudinal direction, and moves in a direction perpendicular to the longitudinal side surface of the hole of the terminal insertion hole 4. The washer 6 is attached near the tip of the core part 5. The screw 7 has a rotation axis perpendicular to the front direction of the pedestal 3, that is, a direction perpendicular to the moving direction of the core portion 5, intersects the core portion 5, and a spur gear 71 is provided on the outer periphery of the rotation shaft. The spur gear 71 is meshed with the rack of the core part 5. The plurality of crimp terminals 8 have concentric terminals, are connected to cables, are respectively inserted into the terminal insertion holes 4, are fixed by washers 6, and are electrically connected to the electronic device 1 through the terminal block 2. The

Next, a specific operation will be described. The spur gear 71 is rotated by inserting the crimp terminal 8 into the terminal insertion hole 4 and rotating the screw 7. The rack of the core part 5 meshing with the spur gear 71 changes the movement of the screw 7 in the rotational direction to the movement of the core part 5 in the moving direction, and the core part 5 moves. The core 5 rotates the screw 7 clockwise to move the crimping terminal 8 in a direction of pressing the side surface of the terminal insertion hole 4 to fix the crimping terminal 8 with the washer 6. Thereby, the crimp terminal 8 is electrically connected to the electronic apparatus 1 via the terminal block 2. On the contrary, the crimp terminal 8 is released from the washer 6 by rotating the screw 7 counterclockwise.

  Therefore, by inserting the crimp terminal 8 in the front vertical direction of the terminal block 2 and rotating the screw 7 having the rotation axis in the front vertical direction of the terminal block 2, the core is perpendicular to the terminal surface of the crimp terminal 8. By moving the portion 5 and fixing the crimp terminal 8 to the base 2, the protruding portion of the cable or the like connected to the crimp terminal 8 can be eliminated, and workability of attaching / detaching the crimp terminal can be ensured.

  Further, the area of the terminal block 2 after the crimp terminal 8 is attached can be made compact, and the electronic device 1 can be downsized. Moreover, the influence by the instrumentation of the adjacent electronic device 1 is not exerted.

In addition, although the structure which changes the movement of the rotation direction of the screw 7 to the movement of the movement direction of the core part 5 by the rack of the spur gear 71 and the core part 5 is shown, if the outer periphery of the core part 5 is removed instead of the rack. A helical gear is provided on the outer peripheral portion of the screw 7 instead of the spur gear 71 and meshes with each other so that the movement in the rotational direction of the screw 7 is changed to the movement in the moving direction of the core portion 5. It may be configured to change.
Moreover, although the some terminal insertion hole 4 showed the structure in which a hole is formed in the front perpendicular direction of the base 3, the several terminal insertion hole 4 is a structure in which a hole is formed in the diagonal direction with the front of the base 3. But it ’s okay.
Further, the screw 7 has a configuration having a rotation axis perpendicular to the front surface of the pedestal 3, that is, a direction perpendicular to the moving direction of the core portion 5. It may be configured. That is, the screw 7 may be configured to have a rotation axis that intersects the moving direction of the core portion 5.

  Moreover, although the structure which provides the washer 6 was shown, if the magnitude | size of the front-end | tip of the core part 5 is large enough to fix the crimp terminal 8, it is not necessary to provide the washer 6.

  The crimp terminal 8 is a concentric terminal, but may be a U-shaped terminal or the like.

DESCRIPTION OF SYMBOLS 1 Electronic device 2 Terminal block 3 Base 4 Terminal insertion hole 5 Core part 6 Washer 7 Screw 71 Spur gear

Claims (4)

In the terminal block to fix the crimp terminal,
A terminal insertion hole for inserting the crimp terminal;
A core that moves in a direction perpendicular to the terminal surface of the crimp terminal inserted into the terminal insertion hole;
A terminal block comprising: a rotating shaft that intersects with the core portion; and a screw that moves the core portion by rotating. The core has a rack;
The terminal block according to claim 1, wherein the screw has a spur gear that meshes with a rack of the core portion.   The terminal block according to claim 1, further comprising a washer provided at a distal end portion of the core portion and holding the crimp terminal.   The terminal block according to claim 1, wherein the terminal block is attached to an electronic device.

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