JP2549571Y2 - DC shift switch structure - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates to relates to a DC variable speed switch structure, and more particularly, relates to an improvement in the mounting of the forward and reverse switching lever.

[0002]

2. Description of the Related Art In a conventional DC speed change switch structure of this type, a forward / reverse switching lever is mounted on the upper surface of a case body using a separate shaft member so as to be rotatable. A pin for actuating a forward / reverse switch is rotatably inserted into the hole of the reverse switch lever.

[0003]

However, in the conventional example, since a separate shaft member is used for mounting the forward / reverse switching lever, it is not easy to attach the forward / reverse switching lever to the case body. In addition, there is a problem that a separate shaft member is required, which increases the cost.

The present invention has been made in view of the above-mentioned problems. The purpose of the present invention is to make it easy to attach a forward / reverse switching lever to a case main body. it is the shaft member or the like is not necessary to provide a DC variable speed switch structure can reduce the cost.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, a lever turning surface is formed on an upper surface of a case body, and a rotation support shaft is formed on the lever turning surface. The front and rear holes are provided in the reverse switching lever, and the rotation support shaft is inserted in the front hole of the forward / reverse switching lever, and the pin body that operates the forward / reverse rotation switch is inserted in the rear hole so as to be rotatable.
And the case body has a rear surface, left and right side surfaces and
Attach the heat sink member that is configured with the upper part integrally,
The left and right side surfaces of the heat radiating plate member are the left and right side surfaces of the case body.
And the upper surface of the heatsink plate member is above the case body.
Surface portion, and further formed on the upper surface portion of the heat sink member.
The rotation support shaft is inserted into the insertion hole,
Forward / reverse switching level between the housing and the rotating surface of the case body.
Characterized in that it was Kyogo the bar.

[0006]

[Function] With this configuration, the forward / reverse switching lever is released.
The case body lever is inserted into the insertion hole formed in the upper part of the hot plate member.
-Insert the rotating shaft formed on the rotating surface, and
Of the case body and the rotating surface of the case body.
Therefore , the attachment of the forward / reverse switching lever to the case body is simplified, and a shaft member or the like for this attachment is not required, so that the cost can be reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 is a longitudinal sectional view of a DC variable speed switch structure according to the present invention, FIG. 2 is a cut away plan view the part.

[0008] DC variable speed switch structure according to the present invention includes a case body 1 and the base member 2 and the substrate 3 and the heat radiating plate member 36. A lever rotation surface portion 1b is formed in the front half of the upper surface portion 1a of the case body 1, and a rotation support shaft 30 is protrudingly provided at the front center of the lever rotation surface portion 1b. A rotation support shaft 3 is provided at the center of the rear portion of the rotation surface 1b.
An arc-shaped long hole 31 centered at 0 is formed. A receiving portion 4 is provided on an upper portion of the base 2, a support shaft 5 is provided upright on the receiving portion 4, and an opening 6 is formed on a front surface portion 2 b of the base 2. 2, a main switch 7 is provided.

In the case main body 1, a changeover switch mechanism 8 is housed in an upper part thereof. The changeover switch mechanism 8 is provided with a switching member 9, the switching member 9, the bearing bore 9a of the central portion, has rotatably supported support shaft 5 provided on the base 1, the bearing hole 9a Is provided between the contact portion 10a of the terminal 10 of the main switch 7 and the contact portion 11a of the terminal 11. A switching contact 1 is provided before and after the switching member 9.
2 and 13 are provided in a state where they are urged outward by springs 14 and 15. In a neutral state, the switching contacts 12 and 13 are in contact with the contact portions 16a and 17a of the motor terminals 16 and 17. A pin body 32 is provided at the rear of the upper surface of the switching member 9.
Are projected, and the pin body 32 is
Through the long hole 31 and protrudes above the lever rotation surface portion 1b.

Reference numeral 33 denotes a forward / reverse switching lever. Holes 34 and 35 are provided at an intermediate portion and a rear portion of the forward / reverse switching lever 33. The forward / reverse switching lever 33 has a rotation support shaft provided in the hole 34. The pin body 32 is rotatably inserted into the hole 35 and provided on the case body 1. An operation shaft unit 18 for the main switch 7 is provided in the base 2, and the operation shaft unit 18 includes a block-shaped operation body 19, and a central portion of the upper surface of the operation body 19 is provided at a central portion thereof. The support shaft 20 is provided in a state of being urged upward by a spring 21. A spring support 2 is provided on the rear surface of the operation body 19.
2 is formed, and an operation shaft 23 is provided on the front surface of the operation body 19.
Is provided. The coil spring 24 is provided on the spring support 22.
The rear end of the coil spring 24 is in contact with the rear surface 2 c of the base 2, and the operating shaft 23 projects forward from the opening 6 by the urging force of the coil spring 24. The end of the operation shaft 23 is connected to the trigger 25. The forward end of the forward / reverse switching lever 33 is movably mounted on the upper surface 25a of the trigger 25.

A movable contact 26 is provided above the operating body 19 while being held by the support shaft 20. The movable contact 26 is in contact with the terminal contact 10b of the main switch 7. 29 is a field effect transistor (FET)
, Which is connected to the control circuit of the substrate 3.

A heat sink 36 is mounted on the outer surface of the case body 1. The radiator plate member 36 has a rear surface portion 37.
And left and right side portions 38 and 39 and an upper surface portion 40, and the upper surface portion 40 is a piece. An insertion hole 41 is formed at a rear portion of the upper surface portion 40. And
The radiator plate member 36 has a rear surface portion 37 formed in the case body 1.
The left and right side portions 38 and 39 are attached to the case body 1 by contacting the left and right side portions 38 and 39 to the left and right side portions of the case body 1 and the upper surface portion 40 to the upper surface portion of the case body 1 respectively. The upper surface 40 of the rotation contact shaft 36 is in contact with the upper surface of the forward / reverse switching lever 33, and the upper end of the rotation support shaft 30 is inserted into the insertion hole 41 of the upper surface 40. As a result, the forward / reverse switching
The bar 33 is located above the upper surface 40 of the heat sink 36 and the case 1.
It will be sandwiched between the surface part.

Next, the operation will be described. When the forward / reverse switching lever 33 is in the neutral position, the motor terminals 16 and 17 do not come into contact with the terminals 10 and 11, so that the trigger 25
The motor does not work even if you pull. Forward / reverse switching lever 33
Is operated to the forward rotation position, the forward / reverse switching lever 33 rotates about the rotation support shaft 30, the switching member 9 rotates via the pin body 32, and the switching contacts 12 and 13 of the switching member 9 The terminals 16 and 17 and the terminals 10 and 11 are short-circuited. In this state, by pulling the trigger 25 with a finger,
The operating body 19 is moved against the coil spring 24, and the movable contact body 26 is moved. When the movable contact 26 short-circuits one of the terminal contacts 10b and 40 of the main switch 7, the current flows through the field-effect transistor 29 to the motor terminal 1.
The motor flows from the motors 6 and 17 to a motor (not shown) so that the speed of the motor can be controlled. Further, when the trigger 25 is pulled with a finger, the movable contact 26 is moved to the other terminal contact 10.
b, 50 are short-circuited, and the current is
The motor flows from the motor terminals 16 and 17 to the motor without passing through the motor 9, and the motor speed is kept constant.

According to the above-described embodiment, the lever rotating surface portion 1b is formed on the upper surface portion 1a of the case body 1, the rotation support shaft 30 is formed on the lever rotating surface portion 1b, and the forward / reverse switching lever 3 is provided.
3 is provided with front and rear holes 34, 35, and the rotation support shaft 30 is inserted into the front hole 34 of the forward / reverse switching lever 33, and the rear hole 3.
A pin body 3 for actuating a forward / reverse rotation changeover switch mechanism 8;
2 was rotatably inserted respectively, since the upper surface portion 40 of the radiator plate member 36 mounted on the outside of the case body 1 abuts against the upper surface of the forward-reverse switching lever 33, forward-reverse switching lever 3
3 is an upper surface of the heat sink 36 and an upper surface of the case 1.
Between the forward and reverse switching lever 33
Mounting to the case body 1 is simplified.

[0015]

As described above, according to the present invention, a lever rotation surface is formed on the upper surface of the case body, a rotation support shaft is formed on the lever rotation surface, and front and rear holes are formed in the forward / reverse switching lever. A rotating shaft is inserted in a front hole of the forward / reverse switching lever, and a pin body for operating a forward / reverse switching switch is rotatably inserted in a rear hole of the forward / reverse switching lever.
The body has a rear surface, left and right side surfaces, and a top surface integrated.
The radiator plate member to be formed is attached, and the left and right sides of the radiator plate member
The surface portion is on the left and right side surface portions of the case body, and the heat radiating plate portion
The upper surface of the material is located on the upper surface of the case body, and
The rotation support shaft is inserted into an insertion hole formed in the upper surface of the heat sink.
To insert the upper surface of the heat sink and the case body.
The forward / reverse switching lever is sandwiched between the moving surface and
Therefore, the forward / reverse switching lever is located on the upper surface of the heat sink.
Formed in the lever rotation surface of the case body in the insertion hole formed in
Insert the rotating shaft into the upper part of the heat sink
The cable is sandwiched between the
Can be easily retained and attached to the main body ,
This eliminates the need for a shaft member or the like for this
Can be reduced.

Further , the heat radiating plate member is fixed together with the case body.
With an upper surface to clamp the reverse switching lever
By extending the upper surface, the heat sink member
Electronic parts such as field effect transistors in contact with the rear part
The heat generated by the product can be dissipated more
By increasing the heat dissipation effect by using metal as the material
Can be.

[Brief description of the drawings]

1 is a longitudinal sectional view of a DC variable speed switch structure according to the present invention.

FIG. 2 is a plan view in which the same portion is broken.

FIG. 3 is a transverse sectional view of the same.

FIG. 4 is a longitudinal sectional view of the same.

FIG. 5 is a perspective view of a heat sink member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Case main body 1b Lever rotation surface part 8 Changeover switch mechanism 30 Rotation support shaft 33 Forward / reverse switching lever 34 Hole part 36 Heat sink plate member 37 Rear surface parts 38 and 39 Left and right side parts 40 Top part 41 Insertion hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A lever rotation surface portion is formed on an upper surface portion of a case body, a rotation support shaft is formed on the lever rotation surface portion, and a forward / reverse switching lever is provided with front and rear holes, and the forward / reverse switching lever has A rotating shaft is inserted into the hole at the front, and a pin body that operates a forward / reverse rotation switch is inserted into the hole at the rear so as to be rotatable .
And the case body has a rear surface, left and right side surfaces and an upper surface.
Attach a heat sink member that has a surface part integrally, and
The left and right side portions of the heat sink member are the left and right side portions of the case body.
And the upper surface portion of the heat sink member is the upper surface of the case body.
Part, and further formed on the upper surface part of the heat sink member
Inserting the rotation support shaft into the insertion hole, the upper surface of the heat sink member
The forward / reverse switching lever between the
DC shift switch structure, characterized in that it has Kyogo the over.