JP2557093Y2 - Blade type switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a blade type switch used for a ground switch of an electric system of a railway vehicle, for example.

[0002]

2. Description of the Related Art A blade type switch of this type includes an insulating mounting plate, front and rear blade receivers mounted on the mounting plate,
The blades are pivotally supported by one blade receiver, inserted into the other blade receiver, and closed across the front and rear blade receivers. The blade support of this type of prior art blade type switch includes a blade support mounted on a mounting plate, and a pair of blade support pieces which are inserted and inserted into insertion grooves of the blade support.

[0003]

However, in this prior art, the pair of blade receiving pieces are inserted into the insertion grooves of the blade receiving base and attached, and the pair of blade receiving pieces themselves are resilient. Since the blade is only in contact with the blade, it is necessary to perform the rubbing so that the contact pressure between the blade and the blade receiver when the blade is inserted between the pair of blade receiving pieces is good. In addition, there is a drawback in that the rubbing operation requires skill of an operator. Furthermore, since the blade receiving base and the blade receiving piece are separate parts,
There is a drawback that the workability is low because the number of parts is large and assembly of both parts is required.

[0004] An object of the present invention is to avoid the above-mentioned drawbacks and to set the contact pressure between the blade and the blade receiving piece to an appropriate level without requiring a troublesome rubbing operation. An object of the present invention is to provide a blade-type switch that can be assembled with the number of parts and simple assembly work.

[0005]

Means for solving the problems of the present invention include an insulating mounting plate, front and rear blade supports mounted on the mounting plate, and one blade support pivotally supported by the other blade support. In a blade-type switch including a plate-shaped blade that is inserted and closed across the front and rear blade supports, the front and rear blade supports are
It comprises a substantially U-shaped blade receiving portion attached to the mounting plate, and a pair of blade receiving pieces extending integrally from the upper edge of the blade receiving portion, and the other blade receiving portion has the pair of blade receiving pieces. 1 is applied to the blade inserted between the pair of blade receiving pieces.
Further comprising a pair of leaf springs tightened in a direction toward the pair of blade receiving member to each other, the pair of leaf springs, Ho to the blade receiving member
It is held parallel to and spaced from the blade support.
At approximately right angles to the free end of the blade holder
A curved free end portion that curves to
The leaf spring of FIG.
It is an object of the present invention to provide a blade type switch which is fastened together with a pair of blade receiving pieces by a tightening screw penetrating the pair of blade receiving pieces and a nut screwed to the tightening screw.

[0006]

As described above, if the blade receiving base of the blade receiving member and the pair of blade receiving members are integrally formed, the work of assembling them is unnecessary, but the pair of blade receiving members on the blade insertion side is not required. Since the contact pressure against the plate-like blade is maintained by a pair of leaf springs applied to the outer surface thereof, penetrating through the pair of blade receivers, and tightening together with the pair of blade receivers, There is no need for cumbersome rubbing work that requires the skill of the operator.

[0007] In particular, the pair of leaf springs has a holding portion.
In parallel with the corresponding blade support
Are held apart from each other and their free ends correspond
Curved to engage the free end of the
The tightening pressure of the tightening screw is
Blade receiving piece as pressing force against blade receiving piece at free end
Is transmitted as it is, the spring pressure can be adjusted by adjusting the tightening interval of the blade receiving piece, and therefore, the contact pressure between the blade and the blade receiving piece can be finely adjusted and properly set. .

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a switch according to the present invention; FIG.
This blade-type switch 10 has an insulating mounting plate 1
2 and the front and rear blade receivers 1 mounted on the mounting plate 12.
4 and 14 'and a plate-like blade 16 pivotally supported by one blade receiver 14 and inserted into the other blade receiver 14' and closed across the front and rear blade receivers 14 and 14 '. I have.

The front and rear blade receivers 14 and 14 ′ comprise a substantially U-shaped blade support portion 18 and a pair of blade support pieces 20 and 20 ′ extending integrally from the upper edge of the blade support portion 18. ing.

The blade cradle portion 18 has a bottom wall 22 including an extension piece 22a extending integrally rearward or forward, and the bottom wall 22 is located at a position deviated from the pair of blade cradle pieces 20, 20 '. At a position between the bolt rod 26 penetrating the extension piece 22a of the bottom wall 22 so as to be tightened by the nut 24 embedded and mounted in the mounting plate 12, and the mounting plate 12 at a position between the pair of blade receiving pieces 20, 20 '. And is attached to the mounting plate 12 by screws 30 passing through the bottom wall 22 and fastened by nuts 28 on the upper surface thereof.

The pair of blade receiving pieces 20 and 20 ′ are particularly shown in FIG.
And as shown in FIG. 4, they extend integrally from the squeezed upper edge of the blade pedestal portion 18 so that
The interval of 0 'has an interval substantially close to the thickness of the blade 16 inserted therebetween.

The pair of blade receiving pieces 20, 2
0 'has two ridges 32, 32' on its opposite inner surface, as can be seen in particular from FIG.
2 ′, the pivot portion and the insertion portion of the blade 16 have the double blade receiver 14,
It is provided to reliably contact the pair of blade receiving pieces 20 and 20 'of 14'. These ridges 32, 32 '
As shown in FIG. 5, the pair of blade receiving pieces 20, 20 'can be formed by sheet metal processing so as to protrude from the back side.

The blade receiver 14 on the insertion side is applied to the outer surfaces of the pair of blade receivers 20, 20 ', and the pair of blade receivers 2 is provided.
A pair of blade receiving pieces 2 is attached to the blade 16 inserted between 0 and 20 '.
It further comprises a pair of leaf springs 34, 34 'for tightening 0, 20'. The pair of leaf springs 34, 34 '
As shown in, substantially corresponding blade receiving pieces 20, 20 to 'Rights
So that they are spaced apart from the blade receiving pieces 20 and 20 '
The holding parts 34a, 34'a to be held and the corresponding blade supports
Engages approximately perpendicularly to the plate surface at the free end of the bar 20, 20 '
And free curved end portions 34b, 34'b .

The holding portion 34 of the pair of leaf springs 34, 34 ′
a, 34 ′ a are, in the illustrated example, apertures of the blade support portion 18.
Is the part inclined to engage with the inclined part 18a
Consists of Also, the curvature of the pair of leaf springs 34, 34 '
The free end portions 34b, 34'b have their upper ends approaching each other
Curved in the direction. These paired leaf springs 34, 3
4 ′ is a holding portion 34a, 34′a and a curved free end portion 3
4b, 34'b on the holding portions 34a, 34'a side
A pair of blade receiving pieces 20, 20 'is tightened together with a pair of blade receiving pieces 20, 20' by a tightening screw 36 which penetrates through the pair of blade receiving pieces 20, 20 'and a nut 38 screwed to the tightening screw 36. The blade receiving pieces 20, 20 'are spring-biased in a direction approaching each other to maintain the contact pressure against the plate-like blade 16.

Of particular note are the leaf springs 34, 3
4 'is parallel to the corresponding blade support 20, 20'
Are held apart and their free end portions 34b, 3b
4'b is at the free end of the corresponding blade receiving piece 20, 20 '.
Since it is curved to engage at a right angle, tighten it
The clamping pressure of the reed 36 allows the leaf springs 20, 20 'to bend freely.
For the blade receiving pieces 20, 20 'of the end portions 34b, 34'b.
And the corresponding blade receiving pieces 20, 20 '
As it is transmitted as it is, tightening of the blade receiving pieces 20, 20 '
The spring pressure can be adjusted by adjusting the interval.
And Therefore, the leaf springs 34, 34
Therefore, when the blade receiving pieces 20 and 20 ′ are applied with back pressure,
To slightly adjust the degree of tightening of the mounting screw 36
Therefore, the contact pressure between the blade 16 and the blade receiving pieces 20, 20 'is appropriate.
Can be set to

As shown in FIGS. 2 and 4, the plate-like blade 16 has a pivot bolt 40 penetrating a pair of blade receiving pieces 20, 20 'of a blade receiver 14', and a screw on the pivot bolt 40. The combined nut 42 pivotally supports the pair of blade receiving pieces 20 and 20 ′, and can pivot about the pivot bolt 40.

As described above, the blade type switch 10 of the present invention can be used, for example, as a ground switch of an electric system of a railway vehicle.
The blade 16 is normally closed by inserting the blade body 14 between the blade receiving pieces 20 and 20 ′ of the blade body 14. In this state, the plate-shaped blade 16 is applied to the outer surfaces of the pair of blade receiving pieces 20 and 20 ′ of the blade receiver 14 and mutually tightened together with the pair of blade receiving pieces 20 and 20 ′ by the tightening screw 36. It is clamped between a pair of blade receiving pieces 20, 20 'by leaf springs 34, 34' clamped in the approaching direction. Therefore, the blade 16 maintains the predetermined contact pressure and
4 is engaged. In particular, since the leaf springs 34 and 34 ′ adjust the tightening interval in accordance with the tightening state of the tightening screw 36 and adjust the spring pressure, the blade receiving pieces 20 and 2 ′
0 ′ can be given an appropriate contact pressure, and the blade receiving piece 2
Rubbing of 0 and 20 'becomes easy.

[0018]

According to the present invention, as described above, since the blade receiving base of the blade receiving member and the pair of blade receiving pieces are formed integrally, the work of assembling them is not necessary. The pair of blade receiving pieces on the insertion side are applied to the outer surface thereof.
Since the contact pressure against the plate-shaped blade is maintained by the pair of leaf springs, there is no need for a troublesome rubbing operation requiring skill of the operator. In particular, since the pair of leaf springs are fastened together with the blade receiving piece by a tightening screw penetrating the blade receiving piece,
The contact pressure between the pair of blade receiving pieces and the plate-like blade inserted therebetween can be appropriately adjusted by the tightening condition of the tightening screw, and thus there is a practical advantage that the sliding can be easily performed.

Further, the pair of leaf springs has a corresponding blade support.
Parallel to the blade and spaced apart from this blade support
And the free end of the tip is the free end of the corresponding blade support.
Because they are engaged at almost right angles, tighten the tightening screws
The pressure is applied to the blade support at the free end of the leaf spring.
Since the force is transmitted to the blade receiving piece as it is, the blade receiving piece
Adjust the tightening interval of the
Therefore, the contact pressure between the blade and the blade
It can be adjusted and set to a predetermined appropriate value.

[Brief description of the drawings]

FIG. 1 is a top view of the blade type switch according to the present invention.

FIG. 2 is a side view of the blade type switch according to the present invention.

FIG. 3 is a front view of the blade type switch according to the present invention.

FIG. 4 is a rear view of the blade type switch according to the present invention.

FIG. 5 is an enlarged sectional view of a pair of blade receiving pieces used in the present invention.

[Explanation of symbols]

10 blade type switch 12 mounting plate 14, 14 'before and after the blade receiving 16 blade 18 blade cradle portion 18a inclined portion 20, 20' a pair of blade receiving member 22 the bottom wall 22a extending piece 24 a nut 26 bolt rod 28 the nut 30 screw 32, 32 'ridges 34, 34 ' leaf springs 34a, 34'a holding portions 34b, 34'b curved free end portions 36 fastening screws 38 nuts 40 pivot bolts 42 nuts

Claims (1)

(57) [Scope of request for utility model registration] 1. An insulative mounting plate, front and rear blade receivers mounted on the mounting plate, and straddled by one blade receiver and inserted into the other blade receiver to straddle the front and rear blade receivers. The front and rear blade supports are integrally formed from an upper edge of the substantially U-shaped blade support portion attached to the mounting plate and the upper edge of the blade support portion. The other blade receiver is applied to the outer surface of the pair of blade receivers, and the pair of blade receivers is attached to the blade inserted between the pair of blade receivers. And a pair of leaf springs for tightening the blade receiving pieces in a direction approaching each other, wherein the pair of leaf springs are substantially parallel to the blade receiving pieces.
That is held at an interval from the blade receiving piece
Part and the plate surface of the free end of the blade receiving piece are engaged substantially at right angles.
A curved free end portion that curves to
The leaf spring is tightened together with the pair of blade receiving pieces by a tightening screw penetrating the pair of blade receiving pieces between the holding portion and the curved free end portion, and a nut screwed to the tightening screw. A blade-shaped switch.