JPH06310012A - Switch - Google Patents

Abstract

PURPOSE:To decrease the number of stopper parts and surely position an auxiliary unit base by forming a guide part which is made to slide vertically to a switchgear main body in an auxiliary unit base and forming a fixing groove and a connecting hole in the auxiliary unit and the switch main body. CONSTITUTION:At the time of installation of an auxiliary unit 20 in a switchgear main body 50, at first a unit 20 is inserted from a direction crossing a movement direction of a main body cross bar 4 at right angles, and a fixing projected part 2a of the unit 20 is fitted with a fixing groove 5a of the main body 50 to connect the unit. In this case, since a connection claw 1a is extended long from the bottom face position of the auxiliary unit base 2, the claw touches the upper face of the main body base 5, the stopper 1 is pushed up vertically by both guide parts 2a of the auxiliary unit base 2, and the elastic part 1c is brought into contact with a contact part 2C of the base 2 and sagged. At the time the claw 1a reaches the position of a connection hole 5b, the elastic part 1c resores its previous state, the stopper 1 is guided with guide part 2c and connected with a connection face and thus the unit 20 is fixed in the main body 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved mounting structure for mounting an auxiliary unit on a switch body.

[0002]

2. Description of the Related Art A switch has a contact portion having a main circuit contact and an auxiliary contact. For example, when more auxiliary contacts than the number of auxiliary contacts incorporated in the switch main body are required, the auxiliary unit is connected to the switch main body. It is attached to and used.

Conventionally, when the auxiliary unit 20 is attached to the switch main body 50 in this manner, the auxiliary unit 20 and the switch main body 50 are shown as shown in FIGS. The auxiliary unit 20 of FIG. 17 has a stopper 1 and an auxiliary unit base 2, and the stopper 1 has an engaging claw 1a and an operating portion 1.
b, the auxiliary unit base 2 has an engaging portion 3a inside.
And an abutting portion 2b on which the stopper 1 is mounted. A spring 8 for pressing the stopper 1 is mounted between the stopper 1 and the contact portion 2b of the auxiliary unit base 2. Figure 1
The main body base 5 of 8 is the fixed convex portion 2a of the auxiliary unit 20.
A main body fixing groove 5a for engaging with, a engaging hole 5b for engaging with the engaging claw 1a of the stopper 1, and a main body crossbar 4 for holding a contact to be opened and closed and having an engaging recess 4a. .

In the switch configured as described above,
When attaching the auxiliary unit 20 to the switch main body 50, first insert the auxiliary unit 20 from a direction orthogonal to the operation direction of the main body crossbar 4, and fix the fixing projection 2a of the auxiliary unit 20 to the fixing groove of the switch main body 50. Engage according to 5a. At this time, since the tip of the engaging claw 1a is longer than the bottom position of the auxiliary unit base 2, the stopper 1 is pushed up vertically in the direction of inserting the auxiliary unit base 2 into the main body base 5 by contacting the upper surface of the main body base 5. The spring 8 is sandwiched between the abutment portion 2b and the stopper 1 and is in a contracted state.

The engaging claw 1a is the engaging hole 5b of the switch body 50.
When the position is reached, the spring 1 restores and extends to return the stopper 1 itself, the engaging claw 1a is caught by the engaging surface of the engaging hole 5b, and the auxiliary unit 20 is fixed to the switch body 50. At this time, the engaging portion 3 of the auxiliary unit crossbar 3
The a is slid in accordance with the movement of the main body crossbar by being engaged with and connected to the engaging concave portion 4a of the main body crossbar 4.
When removing the auxiliary unit 20 from the switch main body 50, the auxiliary unit 20 is held in a state in which the push-up engagement claw 1a is raised from the upper surface of the main body base 5 with the hand or the like of the stopper 1 while keeping the auxiliary unit 20 in the main body crossbar 4a. It can be detached from the switch body 50 by pulling it out in the direction orthogonal to the operation direction.

Further, FIGS. 19 and 20 show actual fairness 4-2707.
It is a figure of the conventional auxiliary unit 20 and switch main body 50 shown by the 5th publication. FIG. 19 is a partial perspective view of a conventional switch body 50. FIG. 20 shows a conventional auxiliary auxiliary unit 20.
FIG. In FIG. 19, the auxiliary unit base 2 includes a hook portion 9 and an engaging portion 10, and a stopper 1 having an engaging claw 1a and an operating portion 1b is arranged between the hook portions. Reference numeral 3 is an auxiliary unit crossbar, and an engaging portion 3a is provided at a lower portion.
Equipped with. In FIG. 20, reference numeral 5 denotes a main body base, which is provided with an engaging recess 11, a paragraph 12, and a groove 13. Reference numeral 4 denotes a main body crossbar provided with an engagement projection 14.

In the switch configured as described above,
When the auxiliary unit 20 is to be attached to the switch body 50, the auxiliary unit 20 is inserted from the front side of the switch body 50 and the forward engaging projection 10 is the engaging projection 1 of the main body crossbar.
4 and 14 are inserted, and further inserted into the engagement recess 11 and engaged. At this time, the auxiliary unit crossbar engagement portion 3a is inserted into and engaged with the engagement protrusions 14, 14 of the switch body 50. At the same time, the engaging claws 1a of the stopper 1 make the switch body 50
The step portion 12 is crossed over and engaged with the inside of the step portion 12, and the hook portions 9 are respectively inserted into and engaged with the groove 13.
The auxiliary unit 20 is attached to the switch body 50.
Further, when removing the auxiliary unit 20 from the switch body 50, the stopper operating portion 1b of the stopper 1 is pushed up by a hand or the like to disengage the two step portions 12, and the auxiliary unit 20 is pulled out to the front side of the switch body 50. Switch body 50
Can be removed more.

[0008]

Since the conventional switch uses the auxiliary unit fixing method as described above, there is a problem in that a spring must be incorporated in the auxiliary unit, the number of parts is large, and the assembly is difficult. It was In the conventional switch disclosed in Japanese Utility Model Publication No. 4-27075,
One end of the stopper is fixed to the auxiliary unit base, and in order to release the engagement, the engaging claw moves in a circular arc around the fixed one end. In order to get over the step, it is necessary to provide the engaging claw of the stopper with an inclined engaging surface. Therefore, when engaging, a gap is generated and positioning is poor at the time of attachment, resulting in large backlash, or because the inclined engaging surface of the engaging claw and the step portion are brought into contact and engaged with each other, the auxiliary unit is likely to come off due to an external force. Occurs. This misalignment is
For example, there has been a problem that the sliding portions of the main body crossbar and the auxiliary unit crossbar are misaligned and the operation of the crossbar is defective.

The present invention has been made to solve the above problems, and an object thereof is to reduce the number of parts, obtain a fixing method that is easy to manufacture, and provide a more reliable fixing method. .

[0010]

A switch according to a first aspect of the present invention slidably supports a main body crossbar on a main body base, and slidably supports an auxiliary unit crossbar which is engaged with and interlocks with the main body crossbar. It consists of an auxiliary unit base that supports and is fixedly held in the main body base by being inserted from a direction orthogonal to the operation direction of the main body crossbar, and a stopper having an engaging claw that engages with an engaging hole provided in the main body base. In the auxiliary unit, this stopper is provided with an elastic portion that acts so as to exert a force perpendicular to the direction in which the auxiliary unit base is inserted into the main body base, and the engaging hole of the main body base and the engaging surface of the engaging claw of the stopper are provided as stoppers. Is formed in parallel with the sliding direction of the auxiliary unit base, and a stopper for the stopper to slide vertically to the switch body 50 is provided on the auxiliary unit base and the switch body 50. It is provided with a engaging hole with.

In the switch according to the second aspect of the present invention, an elastic unit into which an elastic material such as a metal spring plate is inserted and a stopper provided with an engaging claw are mounted on the auxiliary unit base.

In the switch according to the third aspect of the present invention, the stopper mounting portion of the auxiliary unit base is provided with an elastic portion which is changed in thickness and extends obliquely in the main body base direction, and a stopper which contacts the tip of the elastic portion is provided. It is attached to the auxiliary unit.

A switch according to a fourth aspect of the invention is one in which the stopper of the auxiliary unit base of the first, second and third aspects is provided in the insertion direction of the auxiliary unit.

A switch according to a fifth aspect of the invention has a shape memory alloy inserted in a stopper.

[0015]

[Operation] By configuring the switch as described above,
Due to the action of the elastic portion integrally formed with the stopper, the stopper operates vertically with respect to the direction in which the auxiliary unit base is inserted into the main body base by the guide portion provided on the auxiliary unit base. The engagement claw of the stopper engages with the engagement surface of the engagement claw of the switch body, and the auxiliary unit is fixedly held by the switch body.

Further, the auxiliary unit is fixed to the switch body by a stopper into which a shape memory alloy whose shape is changed so that the engaging claw of the stopper engages with the engaging surface of the engaging hole of the switch body is inserted. Hold.

[0017]

【Example】

Embodiment 1 FIGS. 1 to 10 are views showing an embodiment of the present invention. Figure 1
FIG. 4 is a partial cross-sectional view of a side surface of the auxiliary unit 20. FIG. 2 is a front view of the auxiliary unit 20 of FIG. FIG. 3 is a perspective view of the auxiliary unit base 2 of FIG. FIG. 4 is a perspective view of the auxiliary unit crossbar 3. FIG. 5 is a perspective view of the stopper of the auxiliary unit 20 of FIG. FIG. 6 is an enlarged view of the stopper 1 and the guide portion 2C of the auxiliary unit 20.

1 to 6, 1 is a stopper and 2 is an auxiliary unit base. The auxiliary unit base 2 is provided with a fixed convex portion 2a, an abutting portion 2b for mounting a stopper, and a guide portion 2c on the lower portion. The stopper 1 is an engaging claw 1a having an engaging surface formed substantially parallel to the sliding direction of the stopper 1,
An operation portion 1b for hooking a hand or the like when the auxiliary unit 20 is detached from the switch body 50, and an elastic portion 1c having a thickness different from that of the operation portion 1b are provided. An auxiliary unit crossbar 3 having an engaging portion 3a is supported on the auxiliary unit base 2.

7 and 9 are side and front views of the switch main body 50, and FIG. 8 is a perspective view of the main body crossbar. Figure 10
FIG. 4 is an attachment diagram in which the auxiliary unit 20 is attached to the switch body 50. 7 to 10, the main body crossbar 4 has an engaging recess 4a in the upper portion. Reference numeral 5 denotes a main body base, which has a fixing groove 5a for inserting and engaging the fixing convex portion 2a of the auxiliary unit 20 and an engaging surface provided substantially parallel to the sliding direction of the stopper 1 and engaging with the engaging claw 1a. A mating engagement hole 5b is provided.

In the switch configured as described above,
When attaching the auxiliary unit 20 to the switch main body 50, first insert the auxiliary unit 20 from a direction orthogonal to the operation direction of the main body crossbar 4, and fix the fixing projection 2a of the auxiliary unit 20 to the fixing groove of the switch main body 50. Engage according to 5a. At that time, since the engaging claw 1a extends longer than the bottom surface position of the auxiliary unit base 2, it comes into contact with the upper surface of the main body base 5, and the stopper 1 moves the auxiliary unit 20 to the main body base by both guide portions 2c of the auxiliary unit base 2. The elastic portion 1c hits the contact portion 2b of the auxiliary unit base 2 and is deflected by being pushed up vertically in the direction of insertion into the auxiliary unit base 5. Engaging claw 1
When a comes to the position of the engaging hole 5b of the switch body 50, the elastic portion 1c restores and extends, so that the stopper 1 itself is guided by the guide portion 2c and returned vertically, and is engaged as shown in FIG. The claw 1a is engaged with the engagement surface of the engagement hole 5b, and the auxiliary unit 20 is fixed to the switch body 50.

At this time, the engaging portion 3a of the auxiliary unit crossbar 3 engages with and is connected to the engaging concave portion 4a of the main body crossbar 4 so that it operates according to the movement of the main body crossbar. When removing the auxiliary unit 20 from the switch body 50, the stopper 1 is vertically guided and moved by the guide portion 2c of the auxiliary unit base 2 by pushing up the operation portion 1b of the stopper 1 with a hand or the like. It is possible to remove the auxiliary unit 20 from the switch main body 50 by pulling out the auxiliary unit 20 in the direction orthogonal to the operation direction of the main body crossbar 4 while keeping the engagement claw 1a raised from the upper surface of the main body base 5. is there.

Embodiment 2 FIG. 11 is a sectional view of a stopper according to Embodiment 2 of the present invention.
In the stopper 1 of the first embodiment, as shown in FIG. 11, an elastic material such as a metal spring 6 is inserted and integrally molded to be used as one component. , The durability is improved.

Embodiment 3 FIG. 12 is a partial sectional view of a side surface of an auxiliary unit 20 according to Embodiment 3 of the present invention. FIG. 13 is a perspective view of the auxiliary unit 20 according to the third embodiment of the present invention. In FIG. 12 and FIG. 13, an elastic portion 2d in which the thickness of the auxiliary unit base 2 is changed in the stopper mounting portion is obliquely extended in the direction of the main body base 5, and an elastic portion 2d is formed on the upper surface of the stopper 1. A flat portion 1d is provided.

In the third embodiment, when the auxiliary unit 20 is to be attached to the switch main body 50, the auxiliary unit 20 is first inserted from the direction orthogonal to the operation direction of the main body crossbar 4, and the fixed convex portion 2a of the auxiliary unit 20 is inserted. Is engaged with the fixing groove 5a of the switch body 50. At that time, the engaging claw 1
Since a extends longer than the bottom surface of the auxiliary unit base 2, the stopper 1 comes into contact with the upper surface of the main body base 5 and the stopper 1 is guided by both guide portions 2c of the auxiliary unit base 2.
0 is pushed up perpendicular to the direction of inserting the main body base 5,
The flat portion 1d hits the elastic portion 2d provided on the auxiliary unit base 2, and the elastic portion 2d is bent. Engaging claw 1a
Is located at the engagement hole 5b (see FIG. 18) of the switch body 50, the elastic portion 2d is restored and the flat portion 1d is pushed, whereby the stopper 1 itself is returned vertically by the guide portion 2c, and the engagement is performed. The claw 1a is engaged with the engagement surface of the engagement hole 5b, and the auxiliary unit 20 can be fixed to the switch body 50. Needless to say, it can be removed.

Fourth Embodiment FIG. 14 is a partial sectional view of a side surface of an auxiliary unit according to a fourth embodiment. FIG. 15 is a mounting view of the auxiliary unit 20 to the switch main body 50 according to the fourth embodiment of the present invention. In FIG. 14, the stopper mounting portion of the auxiliary unit base 2 is referred to as the auxiliary unit 2
By providing the auxiliary unit 20 in the insertion direction of 0, the auxiliary unit 20 is fixed to the switch main body 50. In this case, it is not necessary to provide the main body engaging hole 5b as in the first embodiment, and as shown in FIG. 15, the stopper is provided on the side wall portion 5c of the main body fixing groove 5a provided on the upper surface of the main body base 5. 1 engaging claw 1a
Is engaged, the auxiliary unit 20 is fixed to the switch main body 50.

Embodiment 5 FIG. 16 is a sectional view of a stopper according to Embodiment 5 of the present invention.
In FIG. 16, the shape memory alloy 7 is inserted into the stopper 1 and integrally molded to form a single component. After inserting the fixing convex portion 2a of the auxiliary unit 20 into the fixing groove 5a of the switch body 50, heat is applied to the shape memory alloy 7 that is shrunk to a small size as shown in FIG.
As shown in (b), the shape of the stopper 1 can be changed, the engaging claw 1a of the stopper 1 can be caught on the engaging surface of the engaging hole 5b, and the auxiliary unit 20 can be fixed to the switch body 50.

[0027]

As described above, according to the present invention, it is possible to provide an auxiliary unit which is easy to assemble and inexpensive because of the reduction in the number of parts.

Further, the engaging hole of the main body base and the engaging surface of the engaging claw of the stopper are formed substantially parallel to the sliding direction of the stopper, and a guide portion for sliding the stopper is inserted into the main body base. Since it is formed perpendicular to the direction, there is no need to tilt the engaging surface of the engaging claws of the stopper, and there is no rattling, so positioning can be performed accurately, and the auxiliary unit can be easily attached and fixed to the switch body. it can.

If the stopper is formed by inserting an elastic material such as a metal spring plate, it is possible to obtain the effect of improving the durability against bending.

By providing the stopper mounting portion in the insertion direction of the auxiliary unit and engaging the engaging claws of the stopper with the side wall portions of the fixing groove, it is possible to fix the switch body without providing the engaging claws. can get.

When the shape memory alloy is inserted into the stopper so that the stopper has a small contracted shape, when the auxiliary unit is inserted into the switch main body, the stopper does not hit the main body and is easily attached. After that, when the shape memory alloy is heated, the shape is changed and the engaging claws are engaged with the engaging holes, so that the auxiliary unit can be securely fixed to the switch body.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a side surface of an auxiliary unit according to a first embodiment of the present invention.

FIG. 2 is a front view of the auxiliary unit according to the first embodiment of the present invention.

FIG. 3 is a perspective view of the auxiliary unit base of FIG.

FIG. 4 is a perspective view of the auxiliary unit crossbar of FIG.

FIG. 5 is a perspective view of the stopper according to the first embodiment of the present invention.

FIG. 6 is an enlarged view of a stopper of the auxiliary unit and a guide portion 2C.

FIG. 7 is a side view of a switch body according to the first embodiment of the present invention.

FIG. 8 shows a perspective view of a main body crossbar.

FIG. 9 is a front view of a switch body according to the first embodiment of the present invention.

FIG. 10 is a view showing the auxiliary unit attached to the switch main body according to the first embodiment of the present invention.

FIG. 11 is a sectional view of a stopper according to a second embodiment of the present invention.

FIG. 12 is a partial cross-sectional view of a side surface of an auxiliary unit according to a third embodiment of the present invention.

FIG. 13 is a perspective view of an auxiliary unit according to a third embodiment of the present invention.

FIG. 14 is a partial sectional view of a side surface of an auxiliary unit according to a fourth embodiment of the present invention.

FIG. 15 is a mounting view of an auxiliary unit to a switch main body according to a fourth embodiment of the present invention.

16A and 16B are a cross-sectional view of a stopper according to a fifth embodiment of the present invention and a cross-sectional view showing an engaged state thereof.

FIG. 17 is a partial side sectional view of a conventional auxiliary auxiliary unit.

FIG. 18 is a partial perspective view of a conventional switch body.

FIG. 19 is a perspective view of a conventional auxiliary auxiliary unit.

FIG. 20 is a partial perspective view of a conventional switch body.

[Explanation of symbols]

 1 stopper 1a stopper engaging claw 1b stopper operating portion 1c stopper elastic portion 1d stopper flat portion 20 auxiliary unit 2 auxiliary unit base 2a auxiliary unit fixing projection 2b auxiliary unit base contact portion 2c auxiliary unit base guide Part 2d Elastic part of auxiliary unit base 3 Auxiliary unit crossbar 3a Engagement part of auxiliary unit crossbar 4 Main body crossbar 4a Engagement recess of main body crossbar 50 Switch body 5 Main body base 5a Switch body fixing groove 5b Switch body engagement Dowel hole 5c Side wall of fixed groove 6 Metal spring plate 7 Shape memory alloy 8 Spring 9 Hook of auxiliary unit 10 Engagement protrusion of auxiliary unit 11 Engagement recess of switch body 12 Step part of switch body 13 Opening and closing Groove of main body of switch 14 Engagement protrusion of crossbar of main body of switch

[Procedure amendment]

[Submission date] July 7, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

Further, FIGS. 19 and 20 show actual fairness 4-2707.
It is a figure of the conventional auxiliary unit 20 and switch main body 50 shown by the 5th publication. FIG. 19 is a perspective view of a conventional auxiliary unit 20 . FIG. 20 is a perspective view of a conventional switch body 50 . In FIG. 19, the auxiliary unit base 2 includes a hook portion 9 and an engaging portion 10, and the engaging claw 1 is provided between both hook portions.
A stopper 1 having a and an operating portion 1b is arranged.
Reference numeral 3 is an auxiliary unit crossbar, which is provided with an engaging portion 3a at the bottom. In FIG. 20, 5 is a main body base, which is an engaging recess 11
And a stepped portion 12 and the groove 13 and. Reference numeral 4 denotes a main body crossbar provided with an engagement projection 14.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

In the switch configured as described above,
When the auxiliary unit 20 is to be attached to the switch body 50, the auxiliary unit 20 is inserted from the front side of the switch body 50 and the forward engaging projection 10 is the engaging projection 1 of the main body crossbar.
4 and 14 are inserted, and further inserted into the engagement recess 11 and engaged. At this time, the auxiliary unit crossbar engaging portion 3a is inserted and engaged between the engaging protrusions 14 of the switch body 50. At the same time, the engaging claws 1a of the stopper 1 make the switch body 5
The hooks 9 are inserted into the grooves 13 and are engaged with each other, and the auxiliary unit 20 is attached to the switch body 50. Further, when removing the auxiliary unit 20 from the switch body 50, the stopper operating portion 1b of the stopper 1 is pushed up by a hand or the like to disengage the two step portions 12, and the auxiliary unit 20 is pulled out to the front side of the switch body 50. It can be detached from the switch body 50.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

[0015]

[Operation] By configuring the switch as described above,
Due to the action of the elastic portion integrally formed with the stopper, the stopper operates vertically with respect to the direction in which the auxiliary unit base is inserted into the main body base by the guide portion provided on the auxiliary unit base. The engaging claws of the stopper engage the switch body.
The auxiliary unit is fixedly held by the switch body by engaging with the engaging surface of the hole .

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0030

[Correction method] Change

[Correction content]

[0030] provided a stopper mounting portion in the insertion direction of the auxiliary unit, by engagement pawl of the stopper is engaged with the wall side portion of the fixing groove, the effect that can be fixed without providing the engagement hole of the switch body can get.

Claims (5)

[Claims] 1. A switch main body comprising a main body crossbar for holding a contact for opening and closing an electric current, and a main body base for slidably supporting the main body crossbar, and an auxiliary unit crossbar which is engaged with and interlocks with the main body crossbar. And an auxiliary unit base that slidably supports the auxiliary unit crossbar and is fixedly held by the main body base by being inserted from a direction orthogonal to the operation direction of the main body crossbar, and slidably supported by the auxiliary unit base. And a switch provided with an auxiliary unit comprising a stopper that holds the auxiliary unit base on the main body base by an engaging claw that engages with an engaging hole provided on the main body base, wherein the auxiliary unit base is A stopper that forms a guide that slides the stopper perpendicular to the insertion direction and is provided in the engagement hole of the main body base. Top to form a resilient portion integrally to, switchgear, characterized in that approximately parallel to form an engagement surface of the engagement hole of the body base of the engaging hole and the stopper and the sliding direction of the stopper. 2. The switch according to claim 1, wherein an elastic material such as a metal spring plate is inserted into the elastic portion of the stopper. 3. The switch according to claim 1, wherein the stopper mounting portion of the auxiliary unit base is provided with an elastic portion obliquely extending in a main body base direction by changing a thickness thereof, so that the stopper is elastically attached to the elastic portion. A switch characterized by fixing an auxiliary unit that gives force to the switch body. 4. The switch according to claim 1, 2, or 3, wherein the stopper mounting portion is provided on an insertion side of an auxiliary unit base to be inserted into the main body base. 5. The switch according to claim 1, wherein a shape memory alloy is inserted in the stopper.