JP3181960B2 - Blade receiving spring block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade spring block used in a table tap.

[0002]

2. Description of the Related Art A blade receiving spring block incorporated in a table tap is formed by providing a blade receiving spring for inserting a plug blade into a terminal plate. When a table tap is made, the blade receiving spring block includes a voltage side electrode blade receiving spring block provided with a voltage side electrode blade receiving spring and a ground side electrode blade receiving spring block provided with a ground side electrode blade receiving spring. other,
The grounding table tap can be formed by incorporating a ground blade receiving spring block provided with a blade receiving spring for grounding.

In this case, the blade support spring of the voltage side electrode, the blade support spring of the ground side electrode, and the blade support spring for grounding are arranged at the positions of the apexes of the triangle. The blade receiving springs of the side poles are not parallel and are arranged in a state of being inclined with respect to each other, so that the terminal and the blade are formed in the same shape as the voltage side pole blade receiving spring block and the ground side pole blade receiving spring block. When sharing the receiving spring,
It is necessary to attach the blade receiving springs to the terminals at different angles.
For this purpose, a mounting piece is protruded from the terminal, and a blade receiving spring is attached to this mounting piece at a required angle with a caulking pin, thereby producing a voltage-side pole blade receiving spring block or a ground-side pole blade receiving spring block. Like that.

[0004]

However, when the blade receiving spring is mounted on the mounting piece provided on the terminal at a required angle with a caulking pin to form a blade receiving spring block, the blade receiving spring is centered on the caulking pin. There is a problem that the angle may go out of order and the blade receiving spring may not be attached at an accurate angle.

[0005] The present invention has been made in view of the above points, and has as its object to provide a blade receiving spring block to which a blade receiving spring can be attached at an accurate angle.

[0006]

A blade receiving spring block according to the present invention is provided with a mounting piece 21 protruding from a terminal plate 1 and four positioning dowels 12 on the surface of the mounting piece 21.
The blade spring 2 is formed by projecting at the position of the apex of the square , and bending and extending the receiving spring pieces 5 on two opposing sides of the bottom plate piece 4 formed into a square to form the blade receiving spring 2. The bottom plate piece 4 is fixed with a caulking pin 13, the blade receiving spring 2 is attached to the terminal plate 1, and the positioning dowels 12 are brought into contact with the end faces of each side of the bottom plate piece 4. It is.

[0007]

The four positioning dowels 12 are provided on the surface of the mounting piece 21 protruding from the terminal plate 1, and the square bottom plate 4 of the blade receiving spring 2 is fixed to the surface of the mounting piece 21 by caulking pins 13. The blade receiving spring 2 is attached to the terminal plate 1 and the bottom plate piece 4
The above-mentioned positioning dowels 12 are brought into contact with the end faces of the respective sides, so that the bottom plate piece 4 can be positioned by contact with the positioning dowels 12, and the blade receiving spring 2 can be prevented from rotating. .

[0008]

The present invention will be described below in detail with reference to examples. The terminal plate 1 is formed of an elongated metal plate, and a plurality of mounting pieces 21 are provided at equal intervals along the longitudinal direction so as to project integrally to the side. As shown in FIG. 2, mounting holes 16 are formed in the center of each mounting piece 21, and a positioning dowel 12 is provided on the surface (upper surface) of the mounting piece 21 at each vertex of a square surrounding the mounting hole 16. Are protruded by stamping press working. The blade receiving spring 2 is formed by bending a blade receiving spring piece 5 on each of two opposing sides of the bottom plate piece 4 at a substantially right angle, and the bottom plate piece 4 is formed in a square shape.

The blade receiving spring 2 is mounted on each mounting piece 21 of the terminal plate 1 so that the blade receiving spring block A is provided.
When attaching the blade receiving spring 2 to the mounting piece 21, the bottom plate piece 4 of the blade receiving spring 2 is addressed to the upper surface of the mounting piece 21, and the bottom plate piece 4 is attached to the mounting hole 16. By caulking through the caulking pin 13, it is possible to perform the operation. At this time, as shown in FIGS. 1 and 3, the positioning dowels 12 protruding from the upper surface of the mounting piece 21 are in contact with the end faces of the respective sides of the bottom plate piece 4. Positioning prevents the blade receiving spring 2 from rotating around the caulking pin 13.
In mounting the blade receiving spring 2 in this manner,
Since the positioning dowel 12 is provided at the position of the apex of the square and the bottom plate piece 4 is formed in a square, besides mounting the blade receiving spring 2 at an angle shown in FIG. 1A or FIG. The blade receiving spring 2 can be attached at an angle shown in FIG. 1 (b) or FIG. 3 (b).

A grounding table tap is used by using the blade receiving spring block A formed by attaching the blade receiving spring 2 to the terminal plate 1 as described above as the grounding side pole blade receiving block 3 and the voltage side pole blade receiving spring block 6. Can be assembled. FIG. 5 shows an example of a grounding table tap. The grounding-side pole blade receiving spring block 3 formed as described above using the same shape as the terminal plate 1 and the blade receiving spring 2 and the voltage The side pole blade receiving spring block 6 is used, and the ground blade receiving spring block 10 is further used. The earth blade receiving spring block 10 has a plurality of mounting pieces 24 projecting sideways at equal intervals on the elongated terminal plate 8 and fixes the base of the blade receiving spring 9 on the upper surface of each mounting piece 24 by caulking pins. It is formed by attaching. The terminal 1 of the ground-side pole blade receiving spring block 3 and the voltage-side pole blade receiving spring block 6 and the terminal plate 8 of the ground blade receiving spring block 10 are provided with connection terminals 23 to which terminal screws 22 are attached. An earth terminal 37 protrudes from one end of the terminal plate 8 of the earth blade receiving spring block 10.

In FIG. 5 , reference numeral 7 denotes an inner shell, which is formed on an inner body 7a and an inner cover 7b so as to be divided into upper and lower parts. Created as excellent. A partition wall 20 is provided integrally in the inner body 7a,
A terminal plate accommodating chamber 27 for accommodating the terminal plates 1 and 1 of the ground-side pole blade receiving spring block 3 and the voltage-side pole blade receiving spring block 6 and a blade receiving spring housing chamber 28 for accommodating these blade receiving springs 2 and 2 are provided. The blade receiving spring housing chamber 29 for housing the blade receiving spring 9 of the ground blade receiving spring block 10 is formed so as to open upward and downward. One end of the inner body 7a has a power cord outlet 3
8 are provided. The inner cover 7b is provided with an arc-shaped slit-shaped plug blade insertion port 30 vertically communicating with the blade receiving spring housing chambers 27 and 28 of the inner body 7a. In FIG. 5 , reference numeral 11 denotes an outer shell, which is formed on the outer body 11a and the outer cover 11b so as to be divided into upper and lower parts. Each of the outer body 11a and the outer cover 11b is formed of a thermoplastic resin such as polyvinyl chloride and has excellent impact resistance. It has been created as a thing. At both ends of the outer body 11a, mounting holes 34 are provided for hanging a grounding table tap on a wall surface or the like. Is provided.

The ground-side pole blade receiving spring block 3 and the voltage-side pole blade receiving spring block 6 accommodate the terminal plates 1, 1 in the terminal plate accommodating chambers 27, 27, and connect the blade receiving springs 2, 2 to each other. By accommodating the blade receiving springs 28 and 28 in the blade receiving springs 28 and 28, the blade receiving springs 2 and 2 are opposed to each other and the terminal plates 1 and 1 are arranged in parallel. It is housed in and fixed. The ground blade receiving spring block 10 has the blade receiving spring 9 inserted into the blade receiving spring accommodating chamber 29 from below, and the terminal plate 8 is arranged along the lower surface of the inner body 7a. Then, as shown in FIG.
By inserting the terminal plate 8 of the ground blade receiving spring block 10 between the inner body 7a and the outer body 11a, the ground blade receiving spring block 10 is fixed by being fitted into the outer body 11a. The inner body 7a and the outer body 11a are formed by fitting the protrusion 42 of the outer body 11a into the recess 41 of the inner body 7a and locking the locking claw 44 of the outer body 11a into the locking recess 43 of the inner body 7a. , So that they can be combined. Further, the inner cover 7b is fitted into the outer cover 11b to be integrated, and the inner cover 7b and the outer cover 11b are fitted with the projections (not shown) of the outer cover 11b in the concave portions 45 of the inner cover 7b. At the same time, by locking the locking claw 48 of the outer cover 11b with the locking recess 47 of the inner cover 7b,
So that they can be combined.

Then, the inner cover 7b and the outer cover 11b are put on the inner body 7a and the outer body 11a.
By screwing the assembling screws 51 passed through the through holes 49 and 50 of the outer body 11a into the screw holes 52 of the inner cover 7b, a grounding table tap as shown in FIG. 6 can be assembled. In this embodiment, the blade receiving springs 2 and 9 are arranged to face the respective blade insertion openings 30 of the outer cover 11b. Can be connected to the respective blade receiving springs 2, 9 in contact. In the embodiment shown in the drawings, by turning the blade along the blade insertion port 30,
A convex boss 53 formed on each of the blade receiving springs 2 and 9 is engaged with a hole provided in the blade to prevent the blade from being removed. In this grounding table tap, the power cord can be connected by inserting the power cord from the power cord insertion port 38 and connecting the power cord to the connection terminal 23 with the terminal screw 22. The ground can be obtained by connecting a ground cord or the like to the ground terminal 37.

When the blade receiving spring block A prepared as shown in FIGS. 1 to 3 is used as the ground side pole blade receiving spring block 3 and the voltage side pole blade receiving spring block 6, the terminal of the mounting piece 4 is used. As shown in FIG. 4, the inclination angle of the center line of the blade receiving spring 2 with respect to the direction of projection from the plate 1 is, for example, 36 degrees for the ground-side pole blade receiving spring block 3 and for the voltage-side pole blade receiving spring block 6 as shown in FIG. In some cases, it is necessary to set a slightly different inclination angle, such as setting each to 34 °. In this case, the blade receiving spring block 3 is swaged to the mounting piece 21 at the predetermined set angle,
After being attached in the manner described above, four positioning dowels 12 are punched out on the mounting piece 21 at positions corresponding to the respective sides of the bottom plate piece 4 of the blade receiving spring 2 so that the blade receiving spring 2 is prevented from rotating. Good to do.

[0015]

As described above, according to the present invention, the mounting piece is provided on the terminal plate so as to protrude, and four positioning dowels are provided on the surface of the mounting piece at the apexes of the square to form a square . A receiving spring piece is bent and extended on each of two opposite sides of the bottom plate piece to be formed to form a blade receiving spring, and the bottom plate piece is fixed to the surface of the mounting piece by caulking and the blade receiving spring is attached to the terminal plate. Since the positioning dowels are brought into contact with the end face of each side of the bottom plate piece at the time of attachment, the bottom plate piece can be positioned on the surface of the mounting piece by contacting the positioning dowel. The blade receiving spring can be attached at an accurate angle while preventing the receiving spring from rotating. Moreover, the four positioning dowels are square tops
At the position of the point, it protrudes from the mounting piece and
Since the bottom plate of the spring is formed in a square shape,
Even if you make a different orientation at 90 ° angle, each side of the bottom plate piece
Each positioning dowel can be brought into contact with the end face,
Locks the spring in any direction different at a 90 ° angle
It can be attached in the state where it is done.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, in which (a),
(B) is a perspective view of each part.

FIG. 2 is a plan view of a part of the terminal plate according to the first embodiment;

FIGS. 3A and 3B show a part of the above, and FIGS.
Are plan views.

FIG. 4 is a partial plan view of the same.

FIG. 5 is an exploded perspective view of a grounding table tap.

FIG. 6 is a perspective view of the grounding table tap according to the first embodiment;

FIG. 7 is a perspective view of a lower half of the grounding table tap according to the third embodiment.

[Explanation of symbols]

 1 terminal plate 2 blade receiving spring 3 bottom plate side 6 receiving spring piece 12 positioning dowel 13 swaging pin 21 mounting piece

Claims (1)

(57) [Claims] 1. A mounting plate is provided on a terminal plate so as to protrude, and four positioning dowels are provided on the surface of the mounting plate at the vertices of a square.
At the position of, the receiving spring piece is bent and extended on each of two opposite sides of the square bottom plate piece to form a blade receiving spring, and the bottom plate piece is fixed to the surface of the mounting piece by caulking pins A blade receiving spring is attached to the terminal plate, and the positioning dowels are brought into contact with end faces of respective sides of the bottom plate piece.