JP2654086B2 - Insert plug - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an insertion plug used by being inserted into an outlet.

[Prior Art] A plug blade block 10 having a pair of plug blades 12 as shown in FIGS.
And a terminal fitting 21 for connecting the electric wire 1 to the blade 12 and holding the blade block 10 so as to be rotatable around a rotation axis 14 ′ along the direction in which the blades 12 are arranged. It is known that the support blade 20 is provided and the plug blade 12 is rotatably connected to the terminal fitting 21. The support body 20 is a terminal fitting 21
Is formed by combining a pair of halves 20a 'and 20b', and a pin 42 is inserted into a hole 41 formed in both halves 20a 'and 20b' to mount the pin 42. The two halves 20a 'and 20b' are joined by tightening
-128481).

[Problem to be Solved by the Invention] In the above-mentioned conventional configuration, a pin 42 is required as a separate member in order to connect the two halves 20a 'and 20b'. Moreover, since a process of caulking the pins 42 is required, there is a problem that the assembling work is troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an insertion plug which reduces the number of parts and facilitates an assembling operation.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, an outer shell which is simultaneously formed so as to cover a support is provided, and a protrusion provided on one of a pair of half bodies and the other are provided. The concave portion provided in the half body is unevenly coupled with the concave portion to form a support, and a step portion for damping the material forming the outer shell body around the storage concave portion for storing the blade block in the support is formed. It is.

[Operation] According to the above configuration, the two halves can be connected only by unevenly connecting the projections and the recesses of the two halves. These parts are not required, and the assembly becomes easy.

Furthermore, when the blade block is rotated, the two halves may open when the blade block is rotated, but the half shell is simultaneously formed so as to cover the support. The body can be held by the outer shell to prevent the mouth from opening.
In addition, since the step is provided around the storage recess, it is possible to prevent the material of the outer shell from flowing into the storage recess when the outer shell is simultaneously formed.

[Embodiment] As shown in FIGS. 1 and 5, a blade block 10 in which the base of a blade 12 is held on both side surfaces of a movable body 11, and a support for rotatably holding the blade block 10 Body 20 and an outer shell 30 covering the periphery of the support 20. Each support 20 has a pair of terminal fittings 21 electrically connected to the blade 12.
Is attached.

The movable body 11 of the blade block 10 is formed of an insulating material such as a synthetic resin in a shape in which the front side is flat and the rear side is arcuate, and the recesses on both sides are fitted with the base of the blade 12. 13 are formed. A cutout groove 13a is formed in a part of the periphery of the recess 13 on the front side of the movable body 11. The blade 12 has notches 12a on both side edges, and the notch 12a
The blade 12 protrudes forward of the movable body 11 in such a manner that both sides of the notch groove 13a are engaged. Thus, notch 12a
The notch 13a is fitted to both sides of the notch groove 13a, so that the blade 12 is held in the movable body 11 without fluctuation. A rotating shaft 14 is formed at a portion of the blade 12 that is fitted into the recess 13 of the movable body 11. Rotating shaft 14
Is formed in a shape in which a stopper pin 14b protrudes from the center of a large-diameter main shaft 14a, and the main shaft 14a engages with the terminal fitting 21.

The movable body 11 of the blade block 10 is housed in a housing recess 22 of a support body 20 formed of an insulating material such as a synthetic resin. The storage recess 22 is formed at the front of the support body 20 and is open both forward and vertically. The support body 20 is formed by joining a pair of half bodies 20a and 20b.
A plurality of (four) connecting hooks 23 are provided on 0a as projections toward the other half body 20b, and the other half body 20b is formed as a concave portion engaging with the connecting hook 23. Is formed. As shown in FIG. 2, the connecting hooks 23 are provided one by one on both sides of the storage recess 22, and a pair is provided on the rear portion of the support 20, and the two half bodies 20a, 20
The two halves 20a, 2
0b is connected without lifting at any part. That is, when the half bodies 20a and 20b are fixed at one place (for example, a conventional example as disclosed in Japanese Patent Application Laid-Open No. 61-128481), at a place far from the fixing part, the two half bodies 20a , 20b may be opened, but as described above, by fixing the two halves 20a, 20b at three places, the opening can be prevented. By the way, the terminal metal 21 is held between the two halves 20a and 20b of the support 20, and the front end of the terminal metal 21 is exposed on the inner peripheral surface of the storage recess 22. The rear end protrudes from the rear surface of the support 20. A portion of the terminal fitting 21 that is exposed inside the storage recess 22 is provided with a rotation shaft 14 of the blade block 10.
A shaft hole 25 that fits into the main shaft 14a is formed,
An annular ridge 25a is formed on the periphery of the shaft hole 25 so as to protrude on the opposite side to the movable body 11. The ridge 25a has a spring washer 26
Are brought into contact with each other, and a stopper pin 14b protruding from the rotating shaft 14 is caulked and fixed to the spring washer 26. That is, the spring washer 26
In the form where the terminal fitting 21 is sandwiched between the base of the blade 12 and
The blade 12 is rotatably held with respect to the terminal fitting 21. Since the spring washer 26 has a spring force for pressing the terminal fitting 21 toward the blade 12, an appropriate frictional force acts between the blade 12 and the terminal 21. The terminal 12 can be stopped at an arbitrary position with respect to the terminal fitting 21. On the other hand, terminal fittings protruding from the rear surface of the support 20
At the rear end of the terminal 21, a terminal portion 21a serving as a crimp terminal is formed. Therefore, by crimping the terminal portion 21a against the electric wire 1, the electric wire 1 is connected to the terminal portion 21a. A pair of press-fitting pieces 27 are protruded from front and rear intermediate portions of each terminal fitting 21, respectively. The press-fitting piece 27 is formed in a tapered shape, and is press-fitted into a fixing hole 28 formed in one half body 20b. As shown in FIG. 3, a pair of convex ribs 29 protrude from the half body 20b, and fixing holes 28 are formed on both sides of each convex rib 29, respectively. As described above, the terminal fitting 21 is fixed to the half body 20b by press-fitting the press-fitting piece 27 into the fixing hole 28, and the blade 12 is rotatably connected to each terminal fitting 21. Therefore, the blade block 10 is held by the half body 20b with respect to the half body 20b. When the other half body 20a is connected to the half body 20b holding the blade block 10 and the terminal fitting 21 in this manner, the blade block 1
0 is held rotatably.

That is, the assembling process of the blade block 10 and the support 20 is summarized as follows. First, as shown in FIG. 4 (a), the blade 12 and the terminal fitting 21 are rotatably connected by the spring washer 26, and then, as shown in FIG. 4 (b), between the blades 12. The movable body 11 is clamped, and then the terminal fitting 21 is pressed into the fixing hole 28 of one half body 20b as shown in FIG. 4 (c). Thereafter, as shown in FIG. 4 (d), the other half body 20a may be connected, and the electric wire 1 may be connected to the terminal portion 21a.

While the blade block 10 and the support body 20 are combined,
After the electric wire 1 is connected to the terminal fitting 21, as shown in FIG. 5, an outer shell 30 made of pinyl chloride or the like is formed on the support 20.
Are simultaneously formed. Here, through holes 31a and 31b are formed at portions of the support 20 where the coupling hooks 23 are formed, and the through holes 31a and 31b pass through a part of the coupling hole 24 to form the support 20. It penetrates both sides. Further, the support 20 is located adjacent to the front of the coupling hole 24 formed at the front end of the support 20.
Are formed on the front and back of the device. further,
The peripheral surface of the support 20 near the through holes 31a and 31b is formed in an uneven shape. Therefore, the outer shell 30 is
When formed simultaneously, the material forming the outer shell
a, 31b, and 32 are also filled, the locking hook 23 is fixed by the outer shell 30, and the two halves 20a, 20b and the outer shell 30 are securely connected. Further, the bonding strength of the outer shell 30 to the support 20 is also increased by the unevenness of the peripheral surface of the support 20. A step 33 is formed substantially all around the storage recess 22 of the support 20, and when the outer shell 30 is simultaneously formed, the outer shell 30 is formed.
The material forming 30 is dammed by step 33.

[Effect of the Invention] As described above, the present invention provides an outer shell that is simultaneously formed so as to cover a support, and includes a projection provided on one of a pair of halves and a recess provided on the other half. And a concave and convex are formed to form a support, and in the support, a step portion is formed around the storage recess for accommodating the blade block, which dams the material forming the outer shell. The two halves can be joined simply by making the protrusions and recesses of the projections and depressions concave and convex, and no other parts are required to join the two halves, making assembly easier. It has advantages.

Furthermore, when the blade block is rotated, the two halves may open when the blade block is rotated, but the half shell is simultaneously formed so as to cover the support. There is an advantage that the body can be held by the outer shell and opening can be prevented. In addition, since the step is provided around the storage recess, there is an advantage that the material of the outer shell can be prevented from flowing into the storage recess when the outer shell is simultaneously formed. It is.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIGS. 2 (a) and 2 (b) are a rear view and a side view respectively showing one half used in the embodiment, and FIGS. 3 (a) (b) ) Is a partially cutaway rear view and a plan view of the other half body used in the same as above.
Fig. 5 is a process diagram showing an assembling sequence of the blade block and the support member in the above, Fig. 5 is an external perspective view of the same, Fig. 6 is a perspective view showing a conventional example, and Fig. 7 is an exploded perspective view of the same. FIG. 10 ... Blade block, 12 ... Blade blade, 14 ... Rotating axis, 20 ...
… Support, 20a, 20b …… Half body, 21 …… Terminal fitting, 23…
... connecting hook, 24 ... connecting hole, 33 ... step.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-128480 (JP, A) JP-A-62-219737 (JP, A) JP-A-62-76174 (JP, A) 95071 (JP, U)

Claims (1)

(57) [Claims] A blade block having a pair of blades projecting therefrom;
A support for holding a blade block so that a pair of terminal fittings each having one end electrically connected to the blade are provided and rotatable around a rotation axis along a direction in which the blades are arranged; An outer shell that is simultaneously molded in a form to cover the support, and the support is formed by unevenly connecting a protrusion provided on one of the pair of halves and a recess provided on the other half. An insert plug, wherein a step portion is formed around the storage recess for accommodating the blade block in the support, and a step portion for damping the material forming the outer shell is formed.