JP2003304665A - Ground brush device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ground brush device, which is arranged so that the rolling-in part of a flat spring for pressurizing a brush does not fly out in a direction opposite to the rolling-in direction with the vibration from a wheel and where a stopper for preventing overinsertion of the flat spring and a bolt attached to a journal box do not interfere with each other, and which can be attached even to a small mounting space. <P>SOLUTION: In the ground brush device, where a brush 2 is installed in the brush insertion groove of a brush holding box 1, and the mounted brush 2 is pressurized with the flat spring 10 having a spiral part so as to bring it into contact with a spring 15 attached to the wheel, a pair of sidewalls 23 projected sideways are provided a terminal 22 for fixing a lead wire 8 so that the spiral part of the spring hooks on the sidewall 23, thereby preventing the flat spring 10 from easily flying out of the head of the brush by vibration. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground brush device used for returning a current supplied from a pantograph of an electric train, a locomotive or the like to a rail.

[0002]

2. Description of the Related Art FIG. 4 is a partial sectional side view of a conventional ground brush device, FIG. 5 is a side view of a brush used in the conventional ground brush device, and FIG. 6 is a thin leaf spring used in the conventional ground brush device. FIG. 3 is a side view showing a state in which a spring fixing metal fitting having one end L-shaped and the other end U-shaped (hereinafter referred to as a U-shaped spring fixing metal fitting) is integrated, and a brush 2 is inserted into a brush insertion groove of a brush holding box 1. The lower part of the brush 2 is pressed by a thin leaf spring 10 having a spiral portion fixed to a U-shaped spring fixing fitting 11 to contact the slip ring 15.

The thin leaf spring 10 and the U-shaped spring fixing fitting 11 are fixed by rivets 12, and the thin leaf spring 10 is fixed to the brush 2.
In order not to jump out when the pressure is applied, the thin plate spring jumping out prevention stopper 13 is locked to the pin 3 which is swaged and attached to the brush holding box 1. It should be noted that the U-shaped spring fixing member 11 and the thin plate spring protrusion preventing stopper 13 are fixed by rivets 14.

Further, the tip of the U-shaped spring fixing member 11 is bent to form a stopper 21 for preventing the thin plate spring from being inserted too much, and a slip ring is inserted when the thin plate spring 10 and the U-shaped spring fixing member 11 are inserted into the brush holding box 1. I try not to touch 15. A terminal 7 is fixed to the upper side surface of the brush 2 by caulking the copper tube 5, and a lead wire 8 is fixed to the upper portion of the terminal 7.
The head of the brush 2 is provided with a guide 4 provided with a V-shaped groove for the purpose of stabilizing the pressing force of the thin leaf spring 10 and further pressing it vertically. In FIG. 5, 6 is a guide fixing concave and convex portion and 9 is a terminal.

Further, for the purpose of efficiently returning the current supplied from the pantograph to the rail, the brush holding box 1 is insulated by the shaft box on the mounting side and the insulating plate 17, and the ground brush device is bolted. It is attached to the axle box at 16.

A packing 18 and a cover 19 are attached to the brush holding box 1 with bolts 20 for the purpose of protecting the brush 2 and the thin leaf spring 10 from stones and dust from the line.

Since the conventional grounding brush device has the above-mentioned structure and is used at the location where it is attached to the axle box of the axle of the vehicle, large vibration of the wheel is easily transmitted to the thin leaf spring 10.
Further, the thin leaf spring 10 is characterized in that the force easily escapes in the direction opposite to the winding direction of the spiral portion. Therefore, the vertical force of the thin leaf spring 10 cannot be maintained only by the guide 4 attached to the head of the brush 2 due to the vibration from the wheel, and the spiral portion of the thin leaf spring 10 moves in the direction opposite to the winding direction from the guide 4 due to the vibration. There is a risk of jumping out.

Further, in recent years, various devices have been attached to an axle in order to improve the performance of a vehicle, and the installation space of the ground brush device has become small and its position has been limited. In particular,
Since the width of the U-shaped spring fixing metal fitting 11 of the conventional ground brush device is wide, there is a problem that the stopper 21 for preventing the excessive insertion of the thin leaf spring at the tip and the bolt 16 attached to the axle box are likely to interfere with each other.

[0009]

SUMMARY OF THE INVENTION The present invention prevents a spiral portion of a thin leaf spring which presses a brush by vibration from a wheel from popping out in a direction opposite to a winding direction, and a stopper for preventing excessive insertion of the thin leaf spring. (EN) Provided is a grounding brush device which can be mounted in a small mounting space without interference of bolts mounted on the axle box.

[0010]

SUMMARY OF THE INVENTION The present invention is a slip ring in which a brush is mounted in a brush insertion groove of a brush holding box, and the mounted brush is pressed by a spring having a spiral portion and mounted on a wheel. In the grounding brush device that is brought into contact with the lead wire, a pair of laterally protruding side walls is provided on the upper portion of the terminal to which the lead wire is fixed, and the spiral part of the spring is hooked on the side walls to cause vibration from the brush head. (EN) Provided is a ground brush device which prevents a spring from jumping out.

Further, the present invention provides a grounding brush device in which an L-shaped spring fixing metal fitting provided with a spring for pressing the brush, a stopper for preventing protrusion and a stopper for preventing excessive insertion of the spring is integrated.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a partial cross-sectional side view of a ground brush device according to an embodiment of the present invention, FIG. 2 is a side view of a brush used in the ground brush device according to an embodiment of the present invention, and FIG. 3 is a view of an embodiment of the present invention. FIG. 2 is a side view showing a state in which a thin leaf spring and an L-shaped spring fixing metal fitting used in the grounding brush device are integrated, and a brush 2 is mounted on a brush holding box 1 and the brush 2 is an L-shaped spring on a slip ring 15. The structure is such that the thin leaf spring 10 fixed to the fixing fitting 24 applies pressure.

In FIG. 2, 4 is a guide having a V-shaped groove on the upper portion, 5 is a copper tube for fixing the brush 2 and the terminal 22, 6 is a guide fixing uneven portion, and a lead wire is provided on the upper portion of the guide 4. The terminal 22 to which 8 is fixed is placed, and a pair of side walls 23 protruding in the lateral direction are provided on the upper side of the terminal 22 and on the side opposite to the lead wire fixing side. A terminal 9 is attached to one end of the lead wire 8.

On the other hand, 12 in FIG. 3 is a thin leaf spring 10.
A rivet for fixing the (spring) to the L-shaped spring fixing metal fitting 24, a stopper 25 for preventing the thin plate spring from popping out, 2
6 is a stopper for preventing excessive insertion of the thin leaf spring, and 14 is a rivet for fixing both stoppers.

Further, 3 in FIG. 1 is a stopper 2 for preventing the thin plate spring from protruding, which is fixed to an L-shaped spring fixing fitting 24.
5 is a pin for locking 5; 16 is a bolt for mounting the brush holding box 1; 17 is an insulating plate for insulating the brush holding box 1 and a shaft box (not shown) on the mounting side;
Is a packing provided between the brush holding box 1 and the cover 19, and 20 is a bolt for attaching the packing 18 and the cover 19.

As shown in FIGS. 1, 2 and 3, a pair of laterally projecting side walls 23 is provided on the upper side of the terminal 22 to which the lead wire 8 is fixed and on the side opposite to the lead wire fixing side. On the other hand, one end of the thin leaf spring 10 (the portion on the side where the spiral portion is not formed) is attached to the L-shaped spring fixing fitting 24 with the rivet 1.
In addition to fixing with 2, the thin-plate spring protrusion preventing stopper 25 and the thin-plate spring excessive insertion preventing stopper 26 were fixed to the L-shaped spring fixing fitting 24 with the rivets 14.

Next, the brush 2 was assembled to have the structure shown in FIG. 2, and then the brush 2 was mounted in the brush insertion groove 27 provided in the brush holding box 1 shown in FIG. Further, the thin leaf spring 10 is fixed to an L-shaped spring fixing metal fitting 24 that is bent upward so that the center and the lower portion are straight so that the head of the brush 2 is pressed by the spiral portion of the thin leaf spring 10.
Was inserted into a predetermined position of the brush holding box 1 and the spiral part was placed on the head of the brush 2, more specifically, on the upper part of the guide 4. Next, in order to prevent the thin leaf spring 10 from popping out when the brush 2 is pressed, the L-shaped spring fixing metal fitting 5 to which the thin leaf spring 10 is fixed is caulked to the brush holding box 1 and attached to the pin 3 for preventing the thin leaf spring from popping out. It was locked with a stopper 25.

When the brush 2 is replaced, the stopper 25 for preventing the thin leaf spring from projecting from the pin 3 is released to release the pressure, and the thin leaf spring 10 is removed from the brush holding box 1.
The brush 2 can be easily replaced by pulling out.

In the present invention, it is preferable to use a thin leaf spring as the spring for pressing the brush. Further, the terminal to which the lead wire is fixed corresponds to a conventional terminal, and in the present invention, it is necessary to provide a pair of side walls projecting in the lateral direction above the terminal. It is preferable that the pair of laterally projecting side walls is formed to have a diameter larger than the outer diameter of the spiral portion of the thin leaf spring by 2 to 3 mm, and further, in terms of strength, it is formed in a U-shape. The position where the protruding side wall is provided is not limited to any position as long as it does not deviate from the outer diameter of the thin leaf spring, but the part on the opposite side to the part where the lead wire is fixed at the top of the terminal (hereinafter referred to as the anti-lead wire fixing side). It is preferable to provide it.

The spring fixing fitting of the thin leaf spring corresponds to a conventional U-shaped spring fixing fitting, but in the embodiment of the present invention, one end is straight and the other end is L-shaped. A stopper for preventing the thin plate spring from popping out is formed on the upper portion of the spring fixing member, and a stopper for preventing the spring insertion is formed on the lower portion. The ends of both of these stoppers were bent to form a protruding portion, and the intermediate portion thereof was fixed to a spring fixing metal fitting with a rivet or the like to be integrated.

[0021]

In the grounding brush device of the present invention, since the spiral portion of the spring is hooked on the side wall, the spiral portion of the thin leaf spring that pressurizes the brush by the vibration from the wheel does not pop out in the direction opposite to the winding direction. The thin plate spring insertion stopper and the spring insertion prevention stopper are L
Since it is provided integrally with the L-shaped spring fixing metal fitting, the bolts that are attached to the stopper shaft box for preventing excessive insertion do not interfere with each other, and the integrated L-shaped spring fixing metal fitting can be mounted even in a small mounting space.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a ground brush device according to an embodiment of the present invention.

FIG. 2 is a side view of a brush used in the ground brush device according to the embodiment of the present invention.

FIG. 3 is a side view showing a state in which a thin leaf spring and an inverted L-shaped spring fixing fitting used in the ground brush device according to the embodiment of the present invention are integrated.

FIG. 4 is a partial cross-sectional side view of a conventional ground brush device.

FIG. 5 is a side view of a brush used in a conventional ground brush device.

FIG. 6 is a side view showing a state in which a thin leaf spring used in a conventional ground brush device and an inverted L-shaped spring fixing fitting are integrated.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Brush holding box, 2 ... Brush, 3 ... Pin, 4 ... Guide, 5 ... Copper tube, 6 ... Guide fixing uneven | corrugated part, 7, 22 ... Terminal, 8 ... Lead wire, 9 ... Terminal, 10 ... Thin leaf spring, 1
1 ... U-shaped spring fixing metal fittings, 12, 14 ... Rivet, 13
... stopper for preventing thin spring from jumping out, 15 ... slip ring, 16 ... bolt, 17 ... insulating plate, 18 ... packing, 19 ... cover, 20 ... bolt, 21, 26 ... stopper for preventing thin spring from being inserted too much, 23 ... side wall, 24 ...
L-shaped spring fixing bracket, 25 ... Stopper for preventing thin plate spring from popping out, 27 ... Brush insertion groove.

Continued front page    (72) Inventor Norio Yamakawa             Namie, 3-3-1 Ayukawa-cho, Hitachi City, Ibaraki Prefecture             Within Hitachi Chemical Co., Ltd. (72) Inventor Koichi Matsuoka             38-8, Hikarimachi, Kokubunji, Tokyo 38 Foundation             Corporate Railway Technical Research Institute (72) Inventor Yasuya Terada             38-8, Hikarimachi, Kokubunji, Tokyo 38 Foundation             Corporate Railway Technical Research Institute (72) Minoru Kondo             38-8, Hikarimachi, Kokubunji, Tokyo 38 Foundation             Corporate Railway Technical Research Institute F term (reference) 5H613 AA01 AA02 BB05 BB15 BB28                       GA13 GA16 GB08 GB09 GB13                       PP03

Claims (2)

[Claims] 1. A ground brush in which a brush is mounted in a brush insertion groove of a brush holding box, and the bonded brush is pressed by a spring having a spiral portion to contact a slip ring mounted on a wheel. In the device, a pair of laterally projecting side walls is provided above the terminal to which the lead wire is fixed, and the spiral of the spring is caught on the side walls to prevent the spring from jumping out from the brush. apparatus. 2. The ground brush device according to claim 1, wherein an L-shaped spring fixing fitting provided with a spring for pressing the brush, a spring popping-out preventing stopper, and a spring insertion preventing stopper is integrated.