JPH0443983Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〔Technical field〕 This invention relates to a wiring device.

[Background technology]

For example, in an exposed double electrical outlet, a pair of blade receiving springs are attached to a device body made of a resin material. Each blade receiving spring has a mounting seat plate and a main body of the blade receiving spring integrally provided on both sides thereof as its main parts. The mounting seat plate includes a press-fitting piece, and the press-fitting piece is fixed to the instrument body by being press-fitted into a press-fitting hole formed in the instrument body. This mounting seat plate is provided with a terminal screw to which a lead wire is connected. Connecting parts are integrally protruded from two places on the mounting seat plate,
The main body of the blade receiving spring is integrally provided via each connecting portion. This main body consists of a first blade retaining spring piece and a second blade retaining spring piece facing each other, and these spring pieces are not directly connected, but are elastically connected through the connecting portion. It is supported. This makes it easier for both spring pieces to open.

However, with conventional spring pieces, when the plug blade is inserted, the entire bottom surface of the spring piece comes into contact with the device body, so the resistance when opening increases, making it difficult to push the plug blade. It was very hot. Further, the blade receiving spring is formed by punching out a metal plate, but the burr formed at that time is often left on the lower end, so this burr is removed when the blade is opened. This had become a form of resistance and was obstructing the opening of the blade holder spring. As a result, the tactile sensation when inserting the plug blade was not very good.

[Purpose of invention]

In view of the above circumstances, the purpose of this invention is to provide a wiring device in which the plug blade is easy to insert and has a good feel at that time.

[Disclosure of invention]

In order to achieve the above object, the wiring device according to the invention has a blade receiving spring formed by punching a metal plate attached to the device body, and this blade receiving spring is attached to a mounting seat plate fixed to the device body. and a first blade receiving spring piece and a second blade receiving spring piece integrally formed on the mounting seat plate and facing each other, wherein at least when the plug blade is inserted, the double-edged receiving spring The device is characterized in that a contact portion that makes point contact with the instrument body is provided at the lower end of at least one of the pieces, and the contact portion is chamfered.

This invention will be explained in detail below with reference to drawings showing embodiments thereof.

FIG. 1 is a partially exploded perspective view of an example of the wiring device according to this invention, and FIG. 2 is an enlarged view of the main parts thereof. This embodiment is an exposed double outlet. As shown in the figure, the appliance body 1 is integrally molded using a resin material, and screw insertion holes 3 are formed in the four corners of the body base plate 2 for attaching an outlet to the wall surface. There is. A cover attachment boss 4 for screwing an outlet cover (not shown) is integrally provided at the center of the body base plate portion 2 in a protruding manner. Partition receiving pieces 5 are integrally provided on both sides of the cover attachment boss 4, and a partition projecting piece 6 is provided around the outer circumference of the partition receiving piece 5. The partition receiving piece 5 is used as an intermediate wall, and spring mounting receiving walls 7, 7 are integrally provided on both left and right sides thereof, respectively. Each spring mounting receiving wall 7 is provided with one pair of press-fit receiving holes 8 and one pair of screw holes 9.

By the way, the blade holder springs 10 are arranged in a pair on the left and right, each including a central mounting seat plate 11 and a pair of blade holder spring bodies as main parts. The mounting seat plate 11 has a planar shape that fits over the upper surface of the spring mounting receiving wall 7, and has a press-fit protrusion 12 that is press-fitted into the press-fit receiving hole 8, and a press-fit protrusion 12 that is press-fitted into the screw hole 9. Terminal screws 13 are provided. As shown in FIG.
is screwed into a screw hole of the blade receiving spring 10 to fix an end of a lead wire (not shown) or a terminal provided at the end. On both sides of the mounting seat plate 11, mounting bases 15, 15 having vertical ribs 14 stand up so as to face each other. This mounting base 15 is bent in a direction opposite to the direction in which it stands up and faces, and has connecting portions 16, 16 at its ends, respectively. The connecting portion 16 is oriented parallel to the mounting seat plate 11, and a pair of opposing opening/closing support pieces 17, 17 protrudes from both sides thereof.
One of the opening/closing support pieces 17 is short and the other is long, and the longer opening/closing support piece 17 extends toward a receiving groove 18 formed on both sides of the spring mounting receiving wall 7 in the instrument body 1. . The long opening/closing support piece 17 is provided with a first blade receiving spring piece 19 on its lateral side, and the short opening/closing support piece 17 is provided with a second blade receiving spring piece 19 on its lateral side.
The blade receiving spring pieces 20 are provided so as to be lined up together. The two blade receiving spring pieces 19 and 20 are attached to the plug 21
A blade guide 23 for receiving the blade 22 of the blade and a clamping part 24 to which the blade 22 is held are respectively provided. Second horizontal connection part 2
5 and 26 to be integrally connected. The first one on the longer side of both lateral connection parts 25 and 26
The lower end contact portion 25a of the horizontal connection portion 25 is connected to the receiving groove 1.
It is positioned so as to face a semicircular receiving protrusion 27 provided perpendicularly on the top of the blade 8, leaving a slight distance S. Since the lower end contact portion 25a is bent due to elastic deformation, the lower end contact portion 25a is bent by the receiving projection 2, as shown in FIG.
7 in a point contact manner. When the lower end contact portion 25a comes into contact with the receiving protrusion 27, it slides on the receiving protrusion 27 as the first blade receiving spring piece 19 opens. At the time of sliding, the burr left on one side of the lower end contact portion 25a is caught on the receiving protrusion 27, and the first blade receiving spring piece 19
In order to obstruct the opening operation, as shown in FIG. 2, a chamfer 25b is provided at the location corresponding to the burr to remove the burr.

As mentioned above, the first and second double-edged receiving spring pieces 19,
20 is independently separated so that the plug blade 22 can be easily inserted, but the first blade receiving spring piece 19
Since the lower end 25a of the tool body 1 is guided by making point contact with the tool body 1, the plug blade 22 can be inserted smoothly without interfering with the opening operation. Furthermore, since the lower end portion 25a is chamfered 25b, the opening operation becomes even smoother, and the sensation when inserting the stopper blade 22 is also good.

Note that the projection for point contact may be integrally provided on one side of the blade receiving spring.

[Effects of the invention] As seen above, the wiring device according to this invention has a blade holder spring formed by punching a metal plate attached to the device body, and this blade holder spring is fixed to the device body. a mounting seat plate formed integrally with the mounting seat plate and facing each other;
A wiring device comprising a blade receiving spring piece and a second blade receiving spring piece, wherein the lower end of at least one of the double-edged receiving spring pieces is in point contact with the instrument body at least when the plug blade is inserted. Since the contact part is provided with a chamfered surface, it is easy to insert the stopper blade, and the feel at that time is also good.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view showing an example of the wiring device according to this invention, Figure 2 is an enlarged view of its main parts,
FIG. 3 is a cross-sectional view showing the assembled state of the blade retaining spring, and FIG. 4 is a cross-sectional view showing the point contact state of the blade retaining spring pieces when inserting the blade. 1... Instrument body, 10... Blade holder spring, 11...
...Mounting seat plate, 19...First blade receiver spring piece, 20...
Second blade receiving spring piece, 21... plug, 25a... lower end, 25b... chamfering.

Claims (1)

[Scope of utility model registration request] A blade holder spring formed by punching out a metal plate is attached to the instrument body, and this blade holder spring is
A wiring device comprising a mounting seat plate fixed to a device body, and a first blade receiving spring piece and a second blade receiving spring piece integrally formed on the mounting seat plate and facing each other, the wiring device including at least a plug plug. A contact portion is provided at the lower end of at least one of the double-edged receiving spring pieces to make point contact with the instrument body when the blade is inserted, and the contact portion is chamfered. Wiring equipment.