JPH07192791A - Cable connector terminal - Google Patents

Abstract

PURPOSE:To improve the reliability on the connection of a terminal by providing a terminal board with a pushing-wide part which pushes wide the inner edge of the insertion hole of a terminal by giving large transformation to as the terminal is fastened. CONSTITUTION:When the insertion hole 41 of a terminal 4 is set on the male screw 2 erected on a terminal board 1, the terminal 4 is circumscribed about an engaging part 14. Subsequently, a washer 53 is set on the male screw 2 and is laid on the terminal 4, and then fastened with a nut 51, whereupon the terminal 4 is fastened, being pressed toward the terminal board 1, and the inner edge 41 a of the insertion hole 41 bites in the tail part 13a, and contacts with one side 11 of the terminal board, thus it is connected. Hereby, the terminal 4 ceases to rotate with the screw in of the fastening member 5, so the reliability on the connection of the terminal 4 can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire connecting terminal for connecting a terminal to a terminal portion of a terminal plate on which a male screw is erected.

[0002]

2. Description of the Related Art Conventionally, there is an electric wire connecting terminal of this type having a structure shown in FIG. This is a terminal board 1
A tightening member including a terminal portion 3 in which a male screw 2 is provided upright, and a nut 51 and a washer 52 which are tightened toward the terminal plate 1 by screwing the terminal 4 inserted in the male screw 2 through the insertion hole 4a into the male screw 2. 5, and is comprised.

The process of connecting the terminal 4 to the terminal plate 1 of this wire connecting terminal will be described below. After inserting the insertion hole 41 of the terminal 4 into the male screw 2 provided upright on the terminal plate 1, and then inserting the washer 52 into the male screw 2 to overlap the terminal 4, the terminal 4 is attached to the terminal plate 1 with the nut 51. When tightened by screwing the male screw toward the male screw, the terminal 4 is connected to the terminal board 1.

[0004]

In the above-mentioned conventional wire connection terminal, the terminal 4 is the nut 51 of the tightening member 5.
Therefore, when it is tightened by screwing the male screw toward the terminal plate 1, it is rotated together with the nut 51, and the torque of the screw cannot be effectively used.
The terminal board 1 cannot be sufficiently tightened.

Particularly, in the case of a high-capacity type, since the diameter of the terminal 4 becomes large, a large torque is required for tightening, and it is difficult to completely control the rotation of the terminal 4 against the large torque. , The terminal 4 rotates with screwing and cannot be tightened sufficiently, resulting in insufficient connection.
Further, when the terminal 4 is tightened with a large torque, the electric wire 6 connected to the terminal 4 is forcibly rotated and twisted in the tightening direction, and the electric wire 6 is connected with the stress caused by the twist. Therefore, the electric wire 6 rotates in the direction in which the stress is released, and the tightening is loosened, which may reduce the reliability of the connection of the terminal 4.

The present invention has been made in view of the above circumstances. An object of the present invention is to connect an electric wire, in which a terminal inserted in a male screw does not rotate with screwing of a tightening member and the reliability of connection is improved. It is to provide terminals.

[0007]

In order to solve the above-mentioned problems, according to a first aspect of the present invention, a terminal portion in which a male screw is erected on a terminal plate and a terminal in which an insertion hole is inserted in the male screw are formed in the male screw. In the electric wire connection terminal including a tightening member that is tightened toward the terminal plate by screwing, the terminal plate locally deforms the inner edge portion of the insertion hole of the terminal as the terminal is tightened. It is configured to be provided with a push-spreading portion that spreads by pushing.

According to a second aspect of the present invention, a terminal portion in which a male screw is erected on a terminal plate, a terminal to be inserted into the male screw through an insertion hole, and a tightening for tightening the terminal toward the terminal plate by screwing. In the electric wire connection terminal including the attached member, the terminal is formed by extending an extending piece from an inner edge portion of the insertion hole toward a center of the hole, and the terminal plate is formed as the terminal is tightened. A fitting portion into which the extended piece of the terminal is fitted is provided.

According to a third aspect of the present invention, in the second aspect, the extending piece has an elastic force that presses the fitting portion toward the center of the male screw.

[0010]

According to the first aspect of the present invention, the male screw set up on the terminal plate is inserted through the through hole of the terminal, and the terminal is screwed into the male screw toward the terminal plate by the fastening member. When the terminal is tightened, the insertion hole of the terminal bites into the expanding portion provided on the terminal plate, and the inner edge of the insertion hole is expanded by locally deforming the terminal hole. It stops rotating as it goes.

According to the second aspect of the present invention, by inserting the insertion hole of the terminal into the male screw erected on the terminal plate and screwing the terminal with the fastening member toward the male screw toward the terminal plate. When tightened, the terminal has an extension piece that extends from the inner edge of the insertion hole toward the center of the hole and fits into the fitting portion provided in the terminal portion. It will not rotate.

According to the third aspect, the extension piece is
The elastic force presses the fitting portion of the terminal plate toward the center of the male screw.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. Members having substantially the same functions as those of the conventional example are designated by the same reference numerals.

This wire connection terminal is composed of a terminal plate 1, a male screw 2, a terminal portion 3, a terminal 4 and a tightening member 5.

The terminal plate 1 is made of a conductive material such as copper alloy and is formed into a substantially rectangular parallelepiped shape. The one surface 11 has a star shape in plan view and is higher than the thickness of the terminal 4 in the substantially center thereof. The push-spreading portion 13 is provided with a taper so that the cross-sectional area becomes larger toward the portion closer to the one surface 11.

The male screw 2 is formed by cutting a thread groove with a metal material such as stainless steel, and the star-shaped spread portion 13 is formed.
Is erected in the center of.

The terminal portion 3 is made of an insulating material such as plastic and is formed into a substantially rectangular parallelepiped shape.
The terminal connecting portion 3a is provided so as to be cut out.
Then, in the terminal connecting portion 3a, the terminal plate 1 is inserted at one end in the longitudinal direction into the terminal portion 3 described later to be appropriately connected to an electric component by a conductive wire or the like, and the other end is positioned at the edge thereof. As described above, the other surface 12 is disposed so as to be in contact with each other.

The terminal 4 is formed of a metal material such as stainless steel in a substantially annular shape having an insertion hole 41, and an electric wire connecting portion 42 is provided by extending from one end of the outer edge portion in the centrifugal direction of the ring. The electric wire 6 is caulked and fixed to the electric wire connecting portion 42.

The tightening member 5 comprises a nut 51 and a washer 53. The nut 51 is formed by cutting a thread groove with a metal material such as stainless steel, and the washer 53 is formed with a metal material such as stainless steel and has a substantially bell shape with one opening 53a and the other top 53b. , Its top 53
An insertion hole 53c smaller than the opening 53a is provided at the center of b.

Next, the process of connecting the terminal 4 to the terminal plate 1 of this wire connecting terminal will be described below with reference to FIGS. 2 (a) and 2 (b). When the insertion hole 41 of the terminal 4 is inserted into the male screw 2 erected on the terminal board 1, the terminal 4 has an inner edge portion 41a of the star spread portion 13 of the terminal board 1 as shown in FIG. It circumscribes the mold ridge portion 13a. Then, the washer 53 is inserted into the male screw 2 through the opening 53a and the terminal 4 is inserted.
The washer 53 with the nut 51.
When tightened by screwing on the male screw toward,
The terminal 4 is pressed toward the terminal plate 1 by the open end 53d of the washer 53 and is tightened, and the inner edge portion 41a of the insertion hole 41 bites into the ridge portion 13a, as shown in FIG.
As shown in FIG. 3, only the part that bites into the star-shaped ridge part 13a is locally expanded by being plastically deformed to be expanded and contacted with the one surface 11 of the terminal plate 1 to be connected.

In such an electric wire connecting terminal, as described above, in the terminal 4, only the portion where the inner edge portion 41a of the insertion hole 41 bites into the ridge portion 13a of the expanding portion 13 has a locally larger plasticity. By being expanded by being deformed, it will not rotate together with the tightening of the tightening member 5, so that it will be sufficiently tightened toward the terminal plate 1, and the electric wire 6 connected to the terminal 4 will also be screwed in the direction of screwing. Since it does not rotate, the stress due to twisting due to unreasonable rotation does not occur, the electric wire 6 does not rotate in the direction to release the stress and loosening the tightening, and the reliability of the connection of the terminal 4 is improved. Can be made.

In this embodiment, the insertion hole 41 of the terminal 4 is used.
The inner edge portion 41a of the is tightened until it is plastically deformed toward the terminal plate 1, but may be elastically deformed as long as it is locally locally deformed, and in that case,
The tightening force is small, and the terminal 4 can be easily removed from the terminal board 1 again.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described below based on. The members having substantially the same functions as those in the first embodiment are designated by the same reference numerals, and
Only the points different from the examples will be described.

In the first embodiment, the terminal plate 1 is provided with the star-shaped spread portion 13 in a plan view, and the terminal 4 has no unevenness on the inner edge portion 41a of the insertion hole 41, but in this embodiment. In the example, the terminal plate 1 is provided with the substantially cylindrical fitting portion 14 having the groove portion 14a on the outer periphery, and the terminal 4 is provided with the extending piece 43 from the inner edge portion 41a of the insertion hole 41. Has become.

More specifically, the fitting portion 14 is a substantially columnar shape having a thickness higher than the thickness of the terminal 4 substantially at the center of the one surface 11 of the terminal plate 1, and a plurality of groove portions 14a near the one surface 11 on the outer periphery. It has a taper so that it becomes shallower and is formed along the axial direction.

The terminal 4 has an inner edge portion 41a of the insertion hole 41.
The extending pieces 43, which are the same number as the groove portions 14a, extend slightly obliquely toward the center of the hole so as to have an elastic force toward the center of the male screw 2.

Next, the process of connecting the terminal 4 to the terminal plate 1 of this wire connection terminal will be described below with reference to FIGS. 4 (a) and 4 (b). When the insertion hole 41 of the terminal 4 is inserted into the male screw 2 provided upright on the terminal plate 1, the terminal 4 has a fitting portion so that the extension piece 43 thereof abuts the groove portion 14a as shown in FIG. Circumscribe to 14. Subsequently, the washer 53 is inserted into the male screw 2 through the opening 53a and overlapped with the terminal 4,
When the washer 53 is tightened by screwing the washer 53 with the nut 51 toward the terminal plate 1, the terminal 4 is tightened by being pressed toward the terminal plate 1 by the open end 53d of the washer 53. The extension pieces 43 are pressed into the groove portions 14a of the fitting portion 14 by elastic force in the center direction of the male screw to be fitted, and the extension pieces 43 taper the groove portions 14a as shown in FIG. While being pressed along and elastically deformed, the one side 11 of the terminal plate 1 is contacted and connected.

In such an electric wire connecting terminal, as described above, in the terminal 4, the extending piece 43 is elastically moved toward the center of the male screw in the groove portion 14a of the fitting portion 14 provided in the terminal plate 1. Since they are pressed into contact with each other to be fitted and do not rotate when the tightening member 5 is screwed, they are sufficiently tightened toward the terminal plate 1, and the electric wire 6 connected to the terminal 4 also rotates in the screwing direction. Since it does not occur, stress due to twisting due to unreasonable rotation does not occur, so the electric wire 6 does not rotate in the direction to release the stress and tightening does not loosen, and the reliability of connection of the terminal 4 is improved. You can

In this embodiment, the extension piece 43 of the terminal 4 is used.
Has elasticity in the direction of the center of the male screw 2, but does not need to have elasticity when the design accuracy of itself and the groove portion 14a of the fitting portion 14 is high. At that time, it has elasticity. It is not necessary to extend it obliquely, which facilitates processing.

Further, in the first and second embodiments, the tightening member 5 is composed of the nut 51 and the washer 53, but when it can be integrally formed, it is integrally formed. May be used, in which case the number of parts can be reduced.

[0031]

According to the first aspect of the present invention, the male screw erected on the terminal plate is inserted into the through hole of the terminal, and the terminal is screwed into the male screw toward the terminal plate by the fastening member. When the terminal is tightened, the insertion hole of the terminal bites into the expanding portion provided on the terminal plate, and the inner edge of the insertion hole is expanded by locally deforming the terminal hole. Since it does not rotate together with it, the reliability of the connection of the terminals can be improved.

According to a second aspect of the present invention, when the male screw set up on the terminal plate is inserted into the through hole of the terminal and the terminal is tightened by the fastening member, the male screw is screwed toward the terminal plate. Since the extension piece extending from the inner edge of the insertion hole toward the center of the hole fits in the fitting portion provided in the terminal, the terminal rotates together with the screwing of the tightening member. Therefore, the reliability of the connection of the terminals can be improved.

According to the third aspect of the present invention, the extending piece presses the fitting portion of the terminal plate in the direction of the center of the male screw by its elastic force, so that the effect of the first aspect can be further enhanced. You can

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a connecting process of the above.

FIG. 3 is a perspective view of a second embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a connecting process of the above.

FIG. 5 is a perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal plate 13 Push-out part 14 Fitting part 2 Male screw 3 Terminal part 4 Terminal 41 Insertion hole 41a Inner edge part 43 Extension piece 5 Tightening member

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[Procedure amendment]

[Submission date] February 13, 1995

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

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[Fig. 2]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 4

[Correction method] Change

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[Figure 4]

Claims (3)

[Claims] 1. A wire connection comprising: a terminal portion in which a male screw is erected on a terminal plate, and a tightening member that is tightened toward the terminal plate by screwing the terminal having the through hole inserted into the male screw into the male screw. In the terminal, the terminal plate is provided with a push widening portion that locally widens and pushes the inner edge portion of the insertion hole of the terminal to spread as the terminal is tightened. . 2. An electric wire provided with a terminal portion in which a male screw is erected on a terminal plate, a terminal which is inserted into the male screw through an insertion hole, and a tightening member which tightens the terminal by screwing toward the terminal plate. In the connection terminal, the terminal is formed by extending an extending piece from the inner edge portion of the insertion hole toward the center of the hole, the terminal plate, as the terminal is tightened, the extending piece of the terminal An electric wire connecting terminal, characterized in that a fitting portion for fitting is provided. 3. The wire connecting terminal according to claim 2, wherein the extending piece has an elastic force that presses the fitting portion toward the center of the male screw.