JPH07230852A - Connecting device - Google Patents

Abstract

PURPOSE:To provide a connecting device which can be disconnected from a mating side connecting device by comparatively weak force while joining to the mating side connecting device with practical strength. CONSTITUTION:In an apparatus body 1, a protrusive stand 21 is protrusively arranged on one surface, and inserting holes 22 to protrude a pair of contactors are arranged in a tip surface of the protrusive stand 21. The protrusive stand 21 is inserted in a cylindrical holding wall formed on a front surface of the apparatus body of a mating side connecting device, and locking claws 41 to engage with locking holes formed in an inner peripheral surface of the holding wall, are protrusively arranged on both side surfaces of the protrusive stand 21. The locking claws 41 are continuously integrally formed on spring plates 42 forme in an arc shape. Guide grooves 23 to pass the locking claws 41 are formed on both side surfaces of the protrusive stand 21, and the spring plates 42 are housed inside of a spring plate housing chamber 24 communicated with the guide grooves 23, and both ends of the spring plates 42 are brought into contact with an inner wall surface opposing to the contactors 31 in the spring plate housing chamber 24. Thereby, since the locking claws 41 can advance/retreat freely to/from the protrusive stand 21, holding power to the mating side connecting device can be set comparatively weak.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device in which a pin-shaped contactor is projectingly provided on a body and is held by the counterpart connecting device in a state where the contactor is inserted into the counterpart connecting device.

[0002]

2. Description of the Related Art Conventionally, as this type of connecting device,
There is a plug provided with a blade used in general electric equipment. An outlet or the like is used as the counterpart connection device for the plug as the connection device. Further, in order to prevent the outlet from being easily pulled out from the plug, a device provided with various locking mechanisms has been proposed (Japanese Utility Model Application No. 5).
No. 6-172223 (Japanese Utility Model Laid-Open No. 58-79879), a microfilm obtained by photographing the contents of the specification and the drawings attached thereto, and Japanese Patent Laid-Open No. 55-117883).

[0003]

By the way, in the state where the plug is inserted into the outlet, the plug is held by the outlet with a relatively strong force, and in the case where the lock mechanism is provided, it is held more firmly. Therefore,
If a large amount of tension is applied to the electric wire by hooking the electric wire connected to the plug with a foot or the like, the electric device may be pulled by the electric wire and fall, or the electric wire may be broken.

An object of the present invention is to solve the above-mentioned problems, and to provide a connecting device which can be connected to the counterpart connecting device with practical strength, but which can be detached from the counterpart connecting device with relatively weak force. Is what you are trying to do.

[0005]

In order to achieve the above-mentioned object, the invention has one aspect in which a protrusion is formed between opposing surfaces of holding walls which are formed in the counterpart connecting device and at least part of which oppose each other. At least a connector provided with a body projecting from the base and a pin-shaped contact protruding from the tip surface of the protrusion and inserted into the counterpart connecting device and electrically connected to an external electric wire. Locking pawls that engage with the locking holes formed on the facing surface of the holding wall in a concave-convex manner are formed integrally with the arc-shaped spring plate,
A guide groove through which the locking claw passes is provided on the side surface of the protrusion, and a spring plate storage chamber that communicates with this guide groove and stores the spring plate is formed inside the body, and the spring plate is formed on the inner wall surface of the spring plate storage chamber. It is characterized in that both ends of the above are brought into contact with each other so that the locking claws can be projected and retracted from the side surface of the projecting base.

According to a second aspect of the present invention, in the first aspect of the invention, the blade insertion opening into which the blade of the plug is inserted is opened on one surface adjacent to the projecting surface of the projecting base in the body to insert the blade. It is characterized in that a blade receiving portion for receiving a plug blade of a plug inserted through a mouth and an electric path for electrically connecting the blade receiving portion to a contact are housed in the body. According to a third aspect of the present invention, in the first aspect of the present invention, an introduction hole for introducing an electric wire into the inside is provided on one surface of the body adjacent to the projecting surface of the projecting stand, and the electric wire introduced into the body through the introduction hole. The electric wire connecting portion connected to the core wire and the electric path electrically connecting the electric wire connecting portion to the contact are housed in the body.

The invention of claim 4 relates to claim 2 or claim 3.
In the invention, the outer shell made of resin that covers at least the surface of the body except the protrusion is formed on the body at the same time.

[0008]

According to the structure of the invention of claim 1, at least a locking claw for engaging concave and convex with a locking hole formed in the facing surface of the holding wall is integrally formed with the arc-shaped spring plate, and is engaged with the side surface of the protrusion. A guide groove through which the pawl passes is provided, and a spring plate storage chamber that communicates with this guide groove and stores the spring plate is formed inside the body, and both ends of the spring plate are brought into contact with the inner wall surface of the spring plate storage chamber. Since the locking claws are projected forward and backward from the side surface of the projecting stand, the contactor is projected on the tip end surface of the projecting stand projecting on the body, and the projecting stand is provided on the holding wall provided on the counterpart connection device. Since the locking claw that is inserted between the facing surfaces and that is provided so as to be able to advance and retreat on the side surface of the protruding base engages with the locking hole provided in the holding wall, the locking claw when connected to the counterpart connection device It is held by the engagement of the locking hole with the locking hole. Moreover, since the locking claw can be moved back and forth with respect to the protrusion, it is possible to set the coupling strength to the counterpart connection device to be relatively small, and to release the coupled state with the counterpart connection device with a comparatively small force. It is possible.
This means that even if tension is applied to the external wire by hooking it with the external wire when it is connected, the electric wire connected to the external wire collapses because it easily comes off from the counterpart connection device. It is possible to prevent accidents such as disconnection of electric wires and disconnection of electric wires.

According to the second aspect of the present invention, the plug blade insertion opening into which the plug blade of the plug is inserted is opened on one surface of the container adjacent to the projecting surface of the projecting base, and the plug blade is inserted through the plug blade insertion opening. Since the blade receiving portion that receives the plug blade of the plug and the electric path that electrically connects the blade receiving portion to the contactor are housed inside the body, a configuration that connects to the counterpart connection device using the pin-shaped contactor However, it can be used for electric devices equipped with general plugs. That is, this connecting device functions as an adapter for changing the connection form between a general plug and the counterpart connecting device. Further, since the contactor and the blade insertion port are formed on the surfaces adjacent to each other in the body, compared with the case where the insertion direction of the contact and the insertion direction of the blade are the same, it is It is possible to reduce the protruding size from the other party connecting device in the mounted state, and when the other party connecting device is fixed to the wall surface etc., it accidentally collides with the body and falls off from the other party connecting device. The possibility can be reduced.

According to the structure of the invention of claim 3, an introduction hole for introducing the electric wire into the inside is provided on one surface of the container adjacent to the projecting surface of the projecting stand, and the core wire of the electric wire introduced into the inside of the container through the introduction hole. Since the electric wire connection part to be connected with and the electric path for electrically connecting the electric wire connection part to the contactor are housed in the body,
Compared to the case where the inserting direction of the contact and the introducing direction of the electric wire are the same, it is possible to reduce the projecting dimension from the mating connecting device when it is attached to the mating connecting device, and the mating connecting device has a wall surface, etc. It is possible to reduce the possibility of accidentally colliding with the body and dropping out of the other party's connecting device when it is fixed to.

In the structure of the fourth aspect of the present invention, since the resin outer cover covering at least the surface of the body except the protrusion is simultaneously formed on the body, the impact applied to the body due to dropping or the like is caused by the resin outer cover. It can be alleviated and damage to the body can be prevented.

[0012]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. First, as shown in FIGS. 1 to 3, the body 1 is a body 10 formed of an insulating material such as synthetic resin.
It is formed by connecting the cover 20 and the cover 20 with the assembly screw 2. The assembly screw 2 passes through the cover 20 and the body 1
The cover 20 is inserted into the body 1 and is screwed into the boss 11 formed in the body 10.
Connect to 0. A protrusion 21 is provided on the outer surface of the cover 20, and a round pin-shaped contactor 31 is inserted into a pair of insertion holes 22 that are opened in the tip end surface of the protrusion 21. The contact 31 has a threaded portion 32 formed at one end in the longitudinal direction.
A nut 33 is screwed into 2 (the nut is screwed here, but the contact 31 may be integrally formed with a nut-shaped collar).

The inside of the body 10 is divided into two chambers by a partition wall 12, and a blade receiving member 30 formed of a sheet metal of a good conductor is installed in each chamber. A blade receiving portion 35 having a shape in which a pair of spring pieces 34 are opposed to each other is formed at one end of the blade receiving member 30, and a screw portion 32 of a contact 31 is screwed into the other end of the blade receiving member 30. An electric circuit board 37 having a screw hole 36 is extended. Therefore, the contact 31
The screw receiving portion 3 of the blade receiving portion 3 is screwed into the screw hole 36 of the electric circuit board 37 and screwed to the position of the nut 33.
5 and the contactor 31 are electrically connected via the electric circuit board 37. The electric path plate 37 of the blade receiving member 30 is provided with a positioning protrusion 38 for positioning with respect to the body 10 and the cover 20. Body 10 and cover 20
A plug blade insertion opening 13 for introducing the plug blade of the plug into the blade receiving portion 32 is opened at a portion straddling the joint with.

By the way, the locking claws 4 are provided on both sides of the protrusion 21.
1 projects forward and backward. The locking claw 41 is continuously and integrally formed with a spring plate 42 formed in an arc shape by a synthetic resin so as to have flexibility in a direction substantially perpendicular to the longitudinal direction of the contactor 31, and on both side surfaces of the protrusion 21. The guide groove 23 through which the locking claw 41 passes is formed along the longitudinal direction of the contactor 31. Further, two spring plate storage chambers 24 communicating with the guide groove 23 are formed so as to extend over the projecting base 21 and the cover 20. These two spring plate storage chambers 24 are covered by the cover 20.
When viewed from the back surface side of the, it is formed in a T shape and is opposed to each other with the contactor 31 interposed therebetween. Then, the spring plates 42 are stored in the spring plate storage chambers 24, respectively.
Both end portions of the above are brought into contact with the inner wall surface of the spring plate accommodating chamber 24 facing the contactor 31. In addition, the locking claw 41 which is integrally formed with the spring plate 42 is moved from the spring plate storage chamber 24 to the guide groove 2
It is made to project to the side surface of the projecting stand 21 through 3. here,
Since the spring plate 42 formed in an arc shape has flexibility in a direction substantially perpendicular to the longitudinal direction of the contactor 31, the locking claw 41 protruding from the side surface of the protrusion 21 is substantially parallel to the longitudinal direction of the contactor 31. It is possible to move forward and backward with respect to the protrusion 21 in the orthogonal direction.

On the other hand, the counterpart connecting device for connecting this connecting device is formed, for example, in a shape as shown in FIG. That is, a rectangular tubular holding wall 51 formed over the entire circumference is provided around the front surface (upper surface in FIG. 4) of the body 50, and the protrusion 21 is inserted into the space surrounded by the holding wall 51. It is possible. An insertion opening 52 into which the contact 31 is inserted is opened on the front surface of the body 50, and the protrusion 21 is formed on the inner surface of the holding wall 51.
When the locking claw 4 is inserted into the portion surrounded by the retaining wall 51.
The engaging hole 53 which engages 1 is formed. Further, the body 50 is formed to have the same dimensions as the embedded wiring device standardized by JIS, etc., and is a mounting frame for three large squares standardized for the embedded wiring device, etc. It can be attached to.

However, if the body 50 is fixed to a wall surface and the body 1 of the connection device of this embodiment is connected to the body 50, the plug blade of a plug used in general electric equipment can be obtained. By inserting into the body 1, general electric equipment can be connected to the body 50. Here, as shown in FIG. 5, the device body 50 and the device body 1 are held by the engagement claw 41 engaging with the engagement hole 53.
Since it can move back and forth, the coupling strength can be made relatively small, and even if a leg or the like is hooked on the wire connected to the plug, the body 1 is easily disengaged from the body 50 and a large tension is applied to the wire. It can be prevented from acting.
Further, since the protruding direction of the contactor 31 from the body 1 and the direction in which the plug blade of the plug is inserted into the body 1 are orthogonal to each other, the body 50 in the state in which the body 1 is connected to the body 50. Body 1 from
It is possible to reduce the projecting dimension of.

(Embodiment 2) The basic structure of this embodiment is the same as that of the embodiment 1, and the common parts are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 6, the connecting device according to the present embodiment has a vinyl chloride outer cover 3 that covers the entire surface of the body 1 excluding the peripheral portions of the protrusion 21 and the blade insertion opening 13.
Is formed on the body 1 by simultaneous molding. The outer cover 3 made of vinyl chloride softens the impact when the body 1 is dropped and prevents damage to the body 1.

(Embodiment 3) As shown in FIGS. 7 and 8,
The basic configuration of the connection device in this embodiment is almost the same as that of the first embodiment, and the common parts are denoted by the same reference numerals and the description thereof is omitted. The connecting device in the present embodiment introduces the electric wire 15 into the body 1 instead of the plug blade insertion opening 13 opened in the portion extending over the joint between the body 10 and the cover 20 in the first embodiment. The introduction hole 4 is formed by the notches 14 and 24 provided in the body 10 and the cover 20. Here, as the electric wire 15 in the present embodiment, an example in which two connecting wires 15a are shielded in parallel is illustrated, but the electric wire 15 is not limited to this and may be an electric wire having a different structure. It goes without saying that it is okay. In addition, mountain-shaped ridges 14a and 24a are provided on the surfaces of the notches 14 and 24 facing each other, and the ridges are formed on the coating of the electric wire 15 introduced into the body 1 from the introduction hole 4. The electric wires 15 are prevented from coming off by biting the tips of 14a and 24a.

On the other hand, in each chamber inside the body 10 divided into two chambers by the partition wall 12, a terminal member 60 formed of a sheet metal of a good conductor is installed. The terminal member 60 includes an electric circuit board 37 having a screw hole 36 into which the screw portion 32 of the contact 31 is screwed, and a terminal board 61 to which the core wire of the connecting wire 15 a of the electric wire 15 is connected. Is provided with a screw hole 63 into which the connection screw 62 is screwed. Therefore, Example 1
Similarly, by screwing the screw portion 32 of the contactor 31 into the screw hole 36 of the electric circuit board 37 and screwing it to the position of the nut 33, the terminal plate 61 and the contactor 31 are electrically connected via the electric circuit board 37. Is connected to. Further, the core wire of the connecting wire 15a of the electric wire 15 can be electrically connected to the terminal board 61 by using the connecting screw 62, so that the electric wire 15 and the contact 31 can be electrically connected.

(Embodiment 4) As shown in FIG. 9, the basic structure of the connecting device in this embodiment is almost the same as that of the third embodiment, and the common parts are designated by the same reference numerals and the description thereof will be omitted. Omit it. In the connection device according to the present embodiment, one end of the terminal plate 72 is projected outward from one surface adjacent to the projecting surface of the projecting base 71 of the body 70, and the caulking portion 73 formed at the end portion of the terminal plate 72 is provided. The core wire of the connecting wire 15a of the electric wire 15 is caulked and fixed. Further, the entire body 70 excluding the protrusion 71 and the end portion of the electric wire 15 are simultaneously molded with vinyl chloride and coated to form an outer cover 74. Therefore, the outer cover 74 made of vinyl chloride can reduce the impact when the body 70 falls and prevent the body 70 from being damaged.

[0021]

According to the invention of claim 1, a projecting stand formed on one surface of the projecting stand, the projecting stand being inserted between the facing surfaces of the holding walls which are formed in the counterpart connecting device and at least part of which face each other, and the projecting stand. In a connecting device comprising a pin-shaped contactor protruding from a tip end surface, inserted into a counterpart connecting device, and electrically connected to an external electric wire, a locking hole formed at least on a facing surface of a holding wall. A locking claw that engages in a concave-convex shape is integrally formed with an arc-shaped spring plate, and a guide groove through which the locking claw passes is provided on the side surface of the projection base. Since the chamber is formed inside the body and both ends of the spring plate are brought into contact with the inner wall surface of the spring plate storage chamber to cause the locking claws to project forward and backward from the side surface of the projection base, the chamber is projected. A contactor is projected on the tip surface of the protrusion, and the protrusion is inserted between the opposing surfaces of the holding wall provided on the counterpart connection device. Since the locking claws provided on the side surface of the projecting base so as to be able to move forward and backward engage with the locking holes provided in the holding wall, the locking claws and the locking holes are formed when connected to the counterpart connection device. Is held by the engagement of. Moreover,
Since the locking claw can move back and forth with respect to the protrusion, it is possible to set the coupling strength to the counterpart connecting device to a relatively small value, and to release the coupled state with the counterpart connecting device with a comparatively small force. You can do it. As a result, even when external wires are connected, even if tension is applied to the external wires by hooking them with their feet, etc., they can easily come off from the other party's connection device, and the electrical equipment connected to the external wires may fall over. This has the effect of preventing accidents such as wire breakage.

According to a second aspect of the present invention, a plug blade insertion opening into which the plug blade of the plug is inserted is opened on one surface adjacent to the projecting surface of the projecting base of the body, and the plug inserted through the plug blade insertion opening. Since the blade receiving part that receives the blade and the electric path that electrically connects the blade receiving part to the contactor are housed inside the body, a configuration is used that connects to the counterpart connection device using a pin-shaped contactor. However, there is an effect that it can be used for an electric device provided with a general plug. Further, since the contactor and the blade insertion port are formed on the surfaces adjacent to each other in the body, compared with the case where the insertion direction of the contact and the insertion direction of the blade are the same, it is It is possible to reduce the protruding size from the other party connecting device in the mounted state, and when the other party connecting device is fixed to the wall surface etc., it accidentally collides with the body and falls off from the other party connecting device. This has the effect of reducing the possibility.

According to a third aspect of the present invention, an introduction hole for introducing an electric wire into the inside is provided on one surface of the body adjacent to the projecting surface of the projecting base, and the core is connected to the core wire of the electric wire introduced into the body through the introduction hole. Since the electric wire connection part and the electric path that electrically connects the electric wire connection part to the contactor are housed inside the body, compare when the contactor insertion direction and the electric wire introduction direction match. Then, it is possible to reduce the protruding dimension from the counterpart connecting device when it is attached to the counterpart connecting device, and when the counterpart connecting device is fixed to a wall surface or the like, it accidentally collides with the body and the counterpart connecting device There is an effect that it is possible to reduce the possibility of being dropped from.

According to the fourth aspect of the present invention, since the resin outer cover covering at least the surface of the body except the protrusion is simultaneously formed on the body, the impact applied to the body due to dropping or the like is mitigated by the resin outer cover. Therefore, there is an effect that damage to the body can be prevented.

[Brief description of drawings]

1A and 1B show a first embodiment, in which FIG. 1A is a plan view of a back surface of a cover forming a body, and FIG. 1B is a plan view of a front surface of the cover.

FIG. 2 is an exploded perspective view of the entire same as above.

FIG. 3 is an overall perspective view of the above.

FIG. 4 is a perspective view showing an example of a counterpart connection device to the above.

FIG. 5 is a sectional view of an essential part showing a state in which the same is connected to a counterpart connection device.

FIG. 6 is an overall perspective view showing a second embodiment.

FIG. 7 is an overall perspective view showing a third embodiment.

FIG. 8 is an exploded perspective view of the entire same as above.

FIG. 9 is a partially cutaway perspective view showing a fourth embodiment.

[Explanation of symbols]

 1 Body 20 Cover 21 Protrusion 24 Spring Plate Storage Chamber 31 Contact 41 Locking Claw 42 Spring Plate

Claims (4)

[Claims] 1. A body having a projecting base projecting on one surface, which is inserted between opposing surfaces of holding walls, at least a part of which is formed in the mating connecting device, and a mating body projecting on a tip end surface of the projecting base. In a connection device comprising a pin-shaped contactor inserted into the connection device and electrically connected to an external electric wire,
At least a locking claw that engages with the locking hole formed on the opposite surface of the holding wall in a concave-convex shape is integrally formed with the arc-shaped spring plate, and a guide groove through which the locking claw passes is provided on the side surface of the projection base. A spring plate storage chamber that communicates with the spring plate and stores the spring plate is formed inside the body, and both ends of the spring plate are brought into contact with the inner wall surface of the spring plate storage chamber so that the locking claws can move forward and backward from the side surface of the protrusion. A connecting device characterized in that it is protruded to the inside. 2. A blade for opening a plug blade insertion opening into which a plug blade of a plug is inserted on one surface adjacent to a projecting surface of a projecting base in a body and receiving a plug blade of a plug inserted through the plug blade insertion opening. The connection device according to claim 1, wherein a receiving portion and an electric path for electrically connecting the blade receiving portion to the contact are housed in the body. 3. An electric wire connecting portion connected to the core wire of the electric wire introduced into the body through the introduction hole provided on one surface of the body adjacent to the projecting surface of the projecting stand, the surface being adjacent to the protruding surface. 2. The connection device according to claim 1, wherein: and an electric path for electrically connecting the electric wire connecting portion to the contactor are housed in the body. 4. The connecting device according to claim 2, wherein a resin outer cover that covers at least the surface of the body except the protrusion is formed on the body at the same time.