JPH0648783Y2 - Socket housing - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket housing which is used in a signal indicator lamp or the like and accommodates and holds a socket for supplying power to a light source.

[0002]

2. Description of the Related Art Conventionally, for example, in an automatic machine or a production line, a signal indicator lamp for illuminating various signals by irradiating light of a plurality of colors on the surroundings is installed,
It is used for worker safety and equipment maintenance. The signal indicator light is formed by arranging a plurality of light sources along a predetermined axis, and for example, a globe of a different color is covered for each light source so that each colored light is radiated to the surroundings. An incandescent light bulb is applied as the light source.

Power is supplied to the light source through a socket housed in a socket housing made of a synthetic resin material or the like. The socket housings are connected in a plurality of stages along the above-mentioned predetermined axis using a shaft or the like, whereby a plurality of light sources are arranged along the above-mentioned predetermined axis. FIG. 4 is a vertical cross-sectional view showing the structure of a socket housing 10 that has been conventionally used in a signal indicator light. This socket housing 10 is for accommodating and holding a screw-type socket (for example, Japanese Industrial Standard E10 socket) 1 for supplying power to an Edison base ball,
It has a cylindrical socket housing portion 2 and a pair of holding arm portions 3 integrally provided on the side opposite to the opening edge of the socket housing portion 2. A step portion 4 having a radius larger than the inner radius is formed at the opening edge of the socket housing portion 2,
A hole 6 for leading out the lead wire 5 is formed in the bottom portion. A boss portion 7 is integrally provided on the holding arm portion 3, and a shaft 8 is inserted through the boss portion 7. The shaft 8 is for connecting a plurality of socket housings 10 in a plurality of stages, and the boss portion 7 holds a space between the adjacent socket housings 10.

FIG. 5 is a plan view of the socket 1. The screw-in type socket 1 has an opening edge 11 which is widened outward and a tip 12 which is formed in a sawtooth shape. When this socket 1 is press-fitted into the socket accommodating portion 2,
The serrated tip portion 12 bites into the step portion 4 of the socket accommodating portion 2, whereby the socket 1 is firmly locked in the socket accommodating portion 2.

In the signal indicator lamp, an Edison base sphere having a screw type base is usually used as a light source. This is because there is no high-pressure light bulb in the Swan base sphere with a plug-in base, whereas the Edison base sphere has a high pressure light bulb, and the Edison base sphere is more available in Japan than the Swan base sphere. This is because it is easier. However, it may not always be easy to obtain the Edison base ball overseas, and it may not be appropriate to use a screw-type socket corresponding to the Edison base ball depending on the export destination. In addition, the Edison base sphere is
Since there is a drawback that the bulb easily burns out because of looseness caused by vibration, it is not suitable when the signal indicator lamp is installed in a place where strong vibration occurs.

Therefore, in signal indicator lamps for export or for use in places of strong vibration, a Swan base bulb having a plug-in base may be used as a light source. In this case, the plug-in type socket shown in FIGS. 6 (a) and 6 (b) is used. 6 (a) is a front view and FIG. 6 (b) is a front view.
Is a plan view. This plug-in socket is, for example, a Japanese Industrial Standard BA9s socket, and has a cylindrical socket body 21 having a mounting groove 21a that engages with an engaging protrusion provided on the base of the light source, and is attached to the bottom of the socket body 21. It has an earth lug 22.

When this plug-in socket is used, the plug-in socket cannot be locked with the socket housing 10 for the screw-in socket shown in FIG. 4, so another dedicated socket housing is required. .

[0008]

As described above, in the prior art, since the socket housings having different configurations are used for the screw-type socket and the plug-in type socket, different sockets are used depending on the type of socket to be used. It is necessary to produce the housing, which causes an increase in production cost. Therefore, there has been a demand for a socket housing that can be used as both a screw-in type socket and a plug-in type socket.

Therefore, an object of the present invention is to solve the above-mentioned technical problems and to provide a socket housing which can be commonly used by a screw-in type socket and a plug-in type socket.

[0010]

SUMMARY OF THE INVENTION To achieve the above object, a socket housing of the present invention comprises a cylindrical screw-type socket whose opening edge is expanded outward and an earth lug projecting outward. A socket housing that can be shared with a cylindrical plug-in type socket provided at the bottom, and has a cylindrical socket accommodating part capable of accommodating both the screw-in type socket and the insert-type socket. An engagement step portion for engaging the opening edge of the screw-type socket is formed at the opening edge of the socket accommodating portion, and an engagement for engaging the ground lug of the plug-in type socket at the bottom portion of the socket accommodating portion. It is characterized by forming a recess.

[0011]

According to the above construction, when the screw-type socket is press-fitted into the socket accommodating portion, the opening edge of the socket engages with the engaging step formed on the opening edge of the socket accommodating portion, whereby the screw-in type The socket is retained. Also, when the insertion type socket is press-fitted into the socket accommodating part, the ground lug provided at the bottom of the socket engages with the engaging recess provided at the bottom of the socket accommodating part, whereby the insertion type socket is accommodated in the socket. It will be retained by being locked to the part.

[0012]

Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. FIG. 1 is a vertical sectional view of a socket housing 30 according to an embodiment of the present invention, and FIG.
1 is shown in FIG. 1 (b), and FIG.
2 shows a state in which two are accommodated. 2 is a perspective view of the socket housing 30 in a state in which the socket is not accommodated, and FIG. 3 is a bottom view thereof.

The socket housing 30 is made of a synthetic resin material, and has a cylindrical socket accommodating portion 31 capable of accommodating both the screw-type socket 51 and the insertion-type socket 52, and the socket accommodating portion. It has a pair of mounting arm portions 32 integrally formed on the bottom of the portion 31. An engagement step portion 33 with which the opening edge 51 </ b> A of the screw-type socket 51 is engaged is formed at the opening edge of the socket accommodating portion 31. The diameter of the inner peripheral surface of the engagement step portion 33 is larger than the diameter of the inner peripheral surface of the inner portion of the socket housing portion 31. Further, the lead wire 5 is provided on the bottom of the socket accommodating portion 31.
A hole 34 for leading out the holes 3 and 54 is formed, and a pair of engagement recesses 35 capable of engaging with the ground lug 55 of the insertion-type socket 52 are formed on the inner peripheral surface at positions symmetrical with respect to the hole 34. , 36 are formed. This engaging recess 35, 36
Is a hole 4 that penetrates the bottom surface 37 of the socket housing 30.
2 and 43 are continuous with each other, and the engagement of the ground lug 55 can be released by inserting a jig such as a driver through the holes 42 and 43.

The mounting arm portion 32 is for connecting the plurality of socket housings 30 in a plurality of stages by the shaft 38 when the socket housing 30 is applied to a signal indicator lamp. The mounting arm portion 32 has a recess 39 for allowing the shaft 38 to pass therethrough. The shaft 38 is housed in the recess 39, a plurality of socket housings 30 are connected to the shaft 38 via tubular spacers 40, and the tip portions of the pair of shafts 38 are fixed to each other by a holding member (not shown). By holding
With the mounting arm portion 32 sandwiched between the spacers 40,
The socket housing 30 is locked to the shaft 38.

The screw-type socket 51 has an opening edge 51.
A is expanded outward, and the tip of the opening edge 51A is formed in a sawtooth shape. This screw type socket 51
When is pressed into the socket housing portion 31 of the socket housing 30, the opening edge 51 </ b> A having a serrated tip is bited into the inner peripheral surface of the engagement step portion 33 of the socket housing portion 31. As a result, the screw-type socket 51 is firmly locked in the socket accommodating portion 31.

On the other hand, the plug-in type socket 52 has a cylindrical socket body 56 and an earth lug 55 which is provided at the bottom of the socket body 56 and projects outward. The body of the socket body 56 has a mounting groove 57 for engaging a protrusion formed on the insertion type base.
Are formed. When this insertion-type socket 52 is press-fitted into the socket accommodating portion 31, the ground lug 55 comes into contact with the inner peripheral surface 41 of the socket accommodating portion 31 and elastically deforms inward. When the tip of the ground lug 55 reaches the engagement recesses 35 and 36 by further press-fitting the socket 52 from this state, the ground lug 55 is restored to the original shape in the recesses 35 and 36. In this state, as shown in FIG. 1 (b), the ground lug 55 engages with the engaging recesses 35 and 36, so that the socket 52 is prevented from being pulled out.

As described above, according to the socket housing 30 of the present embodiment, the engagement step portion 33 formed on the opening edge of the socket accommodating portion 31 is engaged with the opening edge of the screw-type socket 51 by biting. And the socket housing 3
The grounding lug 55 of the plug-in socket 52 can be engaged with the engagement recesses 35 and 36 formed in the bottom portion of 1. In this way, the socket housing 30 can accommodate and hold both the screw-type socket 51 and the plug-in type socket 52.

Therefore, of the Edison base ball and the Swan base ball, the readily available light bulb can be appropriately applied to the signal indicator lamp. In addition, when the signal indicator light is installed and used in a place with strong vibration, even when it is necessary to use the Swan base sphere as a light source, even if a special socket housing is not newly used, A socket housing can be used. In this way, one socket housing can be used for both the screw-in type socket and the plug-in type socket, so that it is not necessary to manufacture different socket housings for each type of socket, which contributes to reduction in production cost. You can

The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the mounting arm portion 32 provided integrally with the socket accommodating portion 33 is provided with the open concave portion 39 for accommodating the shaft 38. However, instead of the concave portion 39, A hole through which the shaft 38 is inserted may be formed, or a boss portion functioning as a spacer may be integrally formed as in the configuration of the related art shown in FIG. Further, the mounting arm portion 32 does not necessarily have to be provided when it is used for purposes other than the signal indicator light. Also, in the above example,
Although the engaging recesses 35 and 36 are continuous with the holes 42 and 43 penetrating the bottom surface 37 of the socket housing 30, the holes 42 and 43 do not necessarily have to be provided. However, the recesses 3 at the time of molding the socket housing 30 by providing the holes 42 and 43
5 and 36 are easily formed, and the holes 42 and 4
There is an advantage that the lead wire connected to the ground lug 55 can also be pulled out from 3. Further, in the above embodiment, the screw-type socket 51 in which the tip of the opening edge is formed in a sawtooth shape is applied, but the shape of the tip of the opening edge does not need to be a sawtooth shape, and the socket housing 30 is used. The socket housing 30 may be used to house and retain any threaded socket having an open edge shaped to engage the engagement step 33 of FIG. Besides, various design changes can be made without changing the gist of the present invention.

[0020]

As described above, according to the socket housing of the present invention, both the screw type socket and the insertion type socket can be accommodated and held in the socket accommodating portion. As a result, the socket housing can be shared by the screw type socket and the plug type socket. As a result, it is not necessary to separately manufacture the socket housing for the screw-type socket and the plug-in type socket, which can contribute to the reduction of the production cost.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a socket housing according to an embodiment of the present invention. (a) shows the state in which the screw-in type socket is accommodated, and (b) shows the state in which the plug-in type socket is accommodated.

FIG. 2 is a perspective view of the socket housing.

FIG. 3 is a bottom view of the socket housing.

FIG. 4 is a vertical sectional view showing a conventional technique.

FIG. 5 is a plan view of a screw-type socket.

FIG. 6 is a diagram showing a configuration of a plug-in type socket. (a) is a front view and (b) is a plan view.

[Explanation of reference numerals] 30 socket housing 31 socket accommodating portion 33 engaging step portion 35, 36 engaging recess 51 screw-in type socket 52 plug-in type socket 51A opening edge 55 ground lug

Claims (1)

[Scope of utility model registration request] 1. A socket housing which can be commonly used as a cylindrical screw-type socket whose opening edge is widened outward and a cylindrical plug-in socket having an earth lug protruding outwardly provided at the bottom. There is a cylindrical socket accommodating portion capable of accommodating both the screw type socket and the insertion type socket, and the opening edge of the socket accommodating portion is engaged with the opening edge of the screw type socket. The socket housing is characterized in that an engaging step portion for forming the socket is formed, and an engaging recess for engaging with the ground lug of the plug-in type socket is formed in the bottom portion of the socket housing portion.