JP2000014090A - Rotary conducting brush and coil spring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conducting brush having such a conducting front end section that can be reduced in exchanging frequency due to the suppressed abrasion of the section and, at the same time, can be exchanged easily as single parts. SOLUTION: The conducting front end section of a rotary conducting brush is composed of a cylindrical member 2 which can rotate around a shaft 3. The member 2 and shaft 3 are supported by coil springs 4 and 5 in such a way that the shaft 3 is supported by the elastic supporting materials 4a and 5a of the springs 4 and 5 which work as struts and the member 2 is supported by the elastic second supporting materials 4b and 5b of the springs 4 and 5 which are bent from the supporting materials 4a and 5a to hold the member 2 from both sides by exercising independent moduli of elasticiticity in opposite directions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current-carrying brush, and more particularly, to a current-carrying brush in which abrasion of a current-carrying tip portion is suppressed, and that only a current-carrying tip portion can be easily replaced as a single item. Concerning energizing brush. Further, the present invention relates to a coil spring suitable for being used as a support for such an energized brush.

[0002]

2. Description of the Related Art In a manufacturing process of an electric product such as a television, in order to supply electric power to each electric product for performance inspection or the like, an energizing brush is installed at a predetermined position on a manufacturing line. At the same time, a method has been adopted in which electric appliances are mounted on a pallet one by one and conveyed on a production line, and the pallets reaching the predetermined position are sequentially brought into contact with the energizing brush.

FIG. 4 shows an example of the configuration of a conventional energizing brush. The energizing brush unit 21 includes a square energizing tip (for example, brass) 22 to which power is supplied from a power supply source (not shown) via a power supply wiring 26;
Coil spring (support material) for supporting the current-carrying tip 22
23 and 24 are integrated into a main body case 25 (or a cover or the like). The upper surface of the energizing tip 22 is a contact surface 22a with the pallet. (In the drawing, the inside of the main body case 25 is drawn in a perspective view.)

FIG. 5 shows an example of the structure of a pallet and the positional relationship between the pallet and the energizing brush unit 21. The pallet 31 is a plate-shaped member for mounting an electric product, has an outlet 32 for inserting a power plug of the mounted electric product (not shown) on the upper surface, and a conductive member for the outlet 32. Connected counter electrode surfaces (for example, those made of copper) 33 and 34 are provided on the bottom surface.
(In the figure, the current-carrying electrode surfaces 33, 34 and the like are drawn in a perspective view.)

When the pallet 31 is conveyed and moved in a direction indicated by an arrow in FIG. 5A from a position away from the energizing brush unit 21 as shown in FIG. 5A, the counter electrode surfaces 33 and 34 of the pallet 31 are moved as shown in FIG. 5B. It comes into contact with the energizing tip 22 of the energizing brush unit 21. By stopping the pallet 31 in a state in which the current-carrying electrode surfaces 33 and 34 are in contact with the current-carrying tip 22, the power from the power supply source is supplied to the pallet 31 via the current-carrying electrode surfaces 33 and 34 and the outlet 32. Since the electric product is continuously supplied to the above electric product, performance inspection of the electric product can be performed.

[0006]

However, the conventional energizing brush configured as shown in FIG. 4 has the following disadvantages (a) and (b). (A) The pallet 31 is provided only at a specific portion where the current-carrying tip 22 is located.
, The current-carrying tip 22 is greatly worn. That is, as shown in FIG. 6, first, the corners (corner portions) of the pallet 31 collide with the corners of the energizing tip 22 and rub against each other. The energizing electrode surface 33) is in contact with the energizing tip 22 (top surface).
Guided by 22a, the current-carrying electrode surfaces 33, 34 and the contact surface 22a come into contact with each other while rubbing each other. Therefore, at first, this corner of the current-carrying tip 22 is particularly worn. And
If this corner wears out to a certain extent, the contact surface 22a
As the area becomes smaller and its shape becomes uneven,
This time, the wear of the contact surface 22a is accelerated.

[0007] When the current-carrying tip 22 wears out,
Since the contact between the current-carrying electrode surfaces 33 and 34 becomes poor, power supply to the electric products on the pallet 31 is hindered. As a result, the current-carrying tip 22 must be replaced frequently, which increases maintenance costs.

(B) Since the energizing brush unit 21 is an integral type in which the energizing tip 22 and the supporting members 23 and 24 are built in the main body case 25, if only the energizing tip 22 is to be replaced as a single unit, the energizing brush unit 21 The entire disassembly and assembly must be performed, which is very troublesome. In order to save this trouble, the entire energized brush unit 21 is often replaced when the energized tip 22 is replaced, so that the maintenance cost is further increased.

The disadvantages (a) and (b) described above are caused not only by the current-carrying brush shown in FIG. 5 used in the manufacturing process of electric products, but also by the conventional DC motor (DC power motor). A carbon brush (a conductive brush having a conductive tip made of carbon) also existed.

FIG. 7 shows an example of the configuration of a carbon brush of a conventional DC motor. The carbon brush 41 is supplied from an electric power supply (not shown) to an electrode plate 44.
And a power supply tip portion 42 made of carbon to which power is supplied via the power supply wire 45 (the front surface is a contact surface 42a), and the electrode plate 44 and the power supply tip while the power supply wire 45 is passed through. And a coil spring (support material) 43 fixed at both ends to the portion 42.

In the carbon brush 41, the energizing tip 42 rubs against a coil (not shown) of the DC motor only at a specific portion, so that the energizing tip 42 is also severely worn, and the coil spring 43 and the energizing tip 42 Is fixed, the entire carbon brush 41 is often replaced when the energizing tip 42 is replaced.

Accordingly, an object of the present invention is to reduce the frequency of replacement of the current-carrying tip by suppressing the wear of the current-carrying tip, and to simply replace the current-carrying tip alone as a single item. It is an object of the present invention to provide an energizing brush capable of performing the following. Another object of the present invention is to provide a coil spring suitable for use as a support member for such a current-carrying brush.

[0013]

According to a first aspect of the present invention, there is provided a rotary energizing brush having a conductive energizing tip and a support member for supporting the energizing tip. An energizing brush that energizes the moving body by contacting a moving object (hereinafter also referred to as a moving body) with the energizing tip, the energizing tip having a shape rotatable in at least one direction around a predetermined center of rotation. Characterized by comprising the following members.

According to the energizing brush, the energizing tip portion is
It is made of a member having a shape rotatable in at least one direction around a predetermined center of rotation. Therefore, if the energizing brush is installed in such a direction that the rotatable direction coincides with the moving direction of the moving body (for example, the pallet 31 or the coil of the DC motor in FIG. 5), the moving body collides with the energizing tip. By doing so, the energizing tip portion starts rotating, and the energizing tip portion comes into contact with the moving body while rotating with the subsequent movement of the moving body.

As described above, the energizing tip comes into contact with the moving body while rotating, and the energizing tip comes into contact with the moving body at a different portion for each rotation angle position of the energizing tip.
Therefore, the wear of the current-carrying tip portion is significantly suppressed as compared with the conventional case where the current-carrying tip portion contacts the moving body while rubbing only at a specific portion. As a result, the frequency of replacement of the current-carrying tip is significantly reduced, so that maintenance costs can be kept low.

[0016] In the rotary energizing brush according to the first aspect, as an example, the energizing tip is formed of a columnar member rotatable around an axis.
It is preferable that this shaft is supported by a support material (that is, the current-carrying tip is indirectly supported via the shaft).

As a result, the moving body comes into contact with the circumferential surface of the columnar member, so that the moving body and the current-carrying front end are compared with, for example, a case where the current-carrying front end is formed of a spherical member. The contact state is improved by widening the contact range of. Further, by removing the columnar member from the shaft, only the current-carrying tip can be easily replaced as a single unit. As a result, the maintenance cost can be further reduced as compared with the case where the entire energizing brush is replaced when the energizing tip is replaced as in the related art.

Further, in the rotary energizing brush according to the second aspect, as an example, the supporting member for supporting the shaft is formed of a resilient member.
It is preferable that the columnar member, which is the current-carrying tip, is sandwiched and supported from both ends of the shaft by the second support member made of an elastic member.

Thus, the impact and stress when the moving body collides with the energizing tip or when the energizing tip contacts the moving body while rotating is reduced by the elasticity of the supporting member for supporting the shaft and the energizing tip. Can be absorbed and suppressed very well by both the elasticity and the elasticity of the second support member which sandwiches and supports from both ends. Further, when the energizing tip comes into contact with the moving body, the elasticity of these supporting members makes the energizing tip uniformly contact the moving body, so that a good contact state is maintained.

The magnitude of the force required to rotate the current-carrying tip is determined by the elasticity of the second support member that sandwiches and supports the current-carrying tip from both ends. By appropriately selecting the magnitude of the elasticity of the support material, the force required to rotate the current-carrying tip portion according to the magnitude of the force applied from the moving body when the moving body actually collides is The size can be adjusted appropriately.

Further, in the rotary energizing brush according to the third aspect, as an example, the support member for supporting the shaft and the second support member may be bent at one place as described in the fourth aspect. It is preferable that the two side portions of the coil spring having the character shape have elasticity independently in directions different from each other so as to be separated from each other by the bent portion.

Accordingly, since these two types of support members are shared by one coil spring, the number of parts can be reduced. Further, for example, a power supply from a power supply source can be supplied to the current-carrying tip portion using the coil spring as a supply path. As a result, the coil spring is also used as a power supply wiring, so that the number of components can be further reduced.

Next, the coil spring according to the present invention comprises:
According to a fifth aspect of the present invention, by forming a bent shape, both side portions bordering the bent portion have elasticity independently in directions different from each other.

As illustrated in FIG. 8, the elasticity (spring force) of the coil spring is such that the coil spring 51 expands and contracts in the longitudinal direction as shown in FIG. And elasticity generated from stress with respect to inclination in a direction perpendicular to the longitudinal direction as shown in FIG. 8C. But,
In the conventional coil spring, the elasticity as shown in FIGS. 8B and 8C is exerted only in one direction determined by the direction of the coil spring.

Therefore, for example, the support member and the second support member in the above-described rotary energizing brush according to the present invention,
In a product including two or more types of components required to exhibit elasticity independently in different directions from each other, when using the coil springs 51 for those components, separate coil springs are required. 51 was required.

On the other hand, according to the coil spring of the present invention, since the coil spring has a bent shape, both side portions bordering the bent portion exhibit elasticity independently in different directions. Therefore, two or more types of components required to exhibit elasticity independently in different directions can be shared by one coil spring, so that the number of components can be reduced as compared with the conventional case. Become.

Further, by appropriately determining the position of the bent portion on the coil spring, the ratio of the elasticity of both sides with respect to the bent portion can be arbitrarily set. The direction of elasticity can be arbitrarily set by appropriately determining the bending angle.

The coil spring according to the present invention may be manufactured by bending a conventional coil spring (a coil spring as a product) as shown in FIG. Alternatively, it may be manufactured by a method of bending at a coil winding stage in a manufacturing process of a coil spring.

[0029]

Next, an example in which the rotary energizing brush according to the present invention is applied to an energizing brush which comes into contact with a pallet on a production line of an electric product such as the energizing brush unit 21 in FIG. 4 will be described. .

FIG. 1A shows an external configuration of the rotary energizing brush unit 1. As shown in FIG. FIG. 1B shows components constituting the rotary energizing brush unit 1 of FIG. 1A. This part includes:
A cylindrical energizing tip (roller) 2, a shaft 3, and L
-Shaped coil springs 4,5 and wiring washers 6,7
, Pins 8, 9, body base 10, fixing screw 11,
There are 12.

The current-carrying tip 2 is made of a conductive material (for example, brass), and its circumferential surface is a contact surface 2a with the pallet. A through hole 2b for passing the shaft 3 is formed in the center of the current-carrying tip 2. The shaft 3 is made of a material having lubricity (for example, plastic), and has thin through holes 3a and 3b for inserting pins 8 and 9 near both ends thereof. Shaft 3
Has a role as an axis for rotating the energizing tip 2 around it.

The L-shaped coil springs 4 and 5 are examples of the coil spring according to the present invention. The L-shaped coil springs 4 and 5 are made of a conductive material (for example, steel), and have an L-shape bent at an angle of 90 ° at one place. Thereby, the L-shaped coil spring 4,
Reference numeral 5 indicates that the two sides (long sides 4a and 5a corresponding to the long side of the L-shape and short sides 4b and 5b corresponding to the short side) of the bent portion are independent from each other in a direction orthogonal to each other. It has elasticity.

The L-shaped coil springs 4, 5 have the following roles. (1) With the shaft 3 passed through the current-carrying tip 2, both sides of the shaft 3 as viewed from the current-carrying tip 2 are short side portions 4 b,
By being inserted into the shaft 5b, the shaft 3 is supported, and the energizing tip 2 is sandwiched and supported from both ends of the shaft 3. (2) The shaft 3 is supported as a support at the long sides 4a and 5a. (3) It becomes a power supply path (wiring) from the main body base 10 to the energization tip 2.

The L-shaped coil springs 4 and 5 are a conventional coil spring 51 as a product as shown in FIG.
Is bent at a 90 ° angle at a position corresponding to the bent portion in FIG. The wire diameter and size of the coil spring 51 and the position of the bent portion exhibit elasticity that can sufficiently absorb and suppress the impact and stress from the pallet in view of the roles of (1) to (3). In addition, it may be determined so as not to cause a voltage drop or heat generation.

Further, the magnitude of the force required to rotate the energizing tip 2 is determined by the elasticity of the short sides 4b, 5b that support the energizing tip 2 from both ends. By determining the wire diameter and size of the coil spring 51 and the position of the bent portion so that the magnitude of the elasticity of the short sides 4b and 5b is appropriately selected, the pallet is added when the pallet actually collides. Depending on the magnitude of the force, the magnitude of the force required to rotate the energizing tip 2 can be adjusted.

Returning to FIG. 1B, the wiring washers 6 and 7 are wiring members obtained by soldering copper wires 6c and 7c to general screw washers 6a and 6b, 7a and 7b. The wiring washers 6 and 7 serve as a normal washer and serve as a power supply path (main power supply path) from the main body base 10 to the energizing tip 2 for supplying power having a large load capacity due to high voltage. It has a role as an auxiliary power supply path for the L-shaped coil springs 4 and 5).

The pins 8 and 9 are general split pins (or pine needles), and the shaft 3 is passed through the current-carrying tip 2 so that both sides are inserted into the short sides 4b and 5b. Fix 3 (prevent the shaft 3 from coming off)
Have a role. (Note that, in order to prevent the shaft 3 from slipping out, the through hole 3 is formed in the shaft 3 as in this example.
Instead of providing the pins a and 3b and inserting the pins 8 and 9, an appropriate method such as cutting a screw into the shaft 3 and screwing a nut may be used. )

The main body base 10 is a plate-shaped member made of a conductive material, and performs electric wiring from power supply sources (not shown) and through holes 10a and 10b for passing the fixing screws 11 and 12. And a terminal portion (screw) 10c serving as a terminal in this case. The main body base 10 has a role as a base of the energizing brush unit and a role as a wiring terminal for supplying electric power to the energizing brush unit by performing electric wiring from a power supply source.

The fixing screws 11 and 12 are general screw materials, and are inserted into the long sides 4 a and 5 a of the coil springs 4 and 5 through the through holes of the main body base 10.
It has a role of fixing the long sides 4 a and 5 a as the support to the main body base 10.

To complete the rotary energizing brush unit 1 of FIG. 1A from these parts 2 to 12, the shaft 3 is passed through the energizing tip 2 and the screw washers 6a and 7a, and both sides of the shaft 3 are L-shaped coils. The pins 8, 9 are inserted into the short sides 4b, 5b of the springs 4, 5, and
Plug in. Then, the fixing screws 11, 12 are passed through the main body base 10 and the screw washers 6b, 7b, and the fixing screws 11, 12 are inserted into the long sides 4a, 5a of the coil springs 4, 5.
Insert. By such a simple assembly process, the rotary energized brush unit 1 is completed.

In the rotary energizing brush unit 1, the L-shaped coil springs 4, 5 support a supporting member as a column supporting the shaft 3 and a supporting member for sandwiching and supporting the energizing tip 2 from both ends. Since the L-shaped coil springs 4 and 5 are also used as power supply wiring, the number of parts is reduced.

In order to replace the energized tip 2,
Remove the pins 8 and 9 and turn on the current-carrying tip 2, screw washer 6a,
7a, the short sides 4b, 5b are detached from the shaft 3, and a new energizing tip, screw washers 6a, 7a, short sides 4b, 5
It is sufficient to insert the pins 8 and 9 through the shaft 3 into b. Therefore, only the energization tip 2 can be easily replaced as a single item.

Further, since the assembling process is simple, the parts other than the current-carrying end portion 2 can be easily replaced as a single unit. Also, part 2
Since all of Nos. To 12 are obtained by simply processing a general-purpose part, the manufacturing cost of the rotary energized brush unit 1 is reduced by reducing the unit cost of the part.

Next, an operation when the rotary energizing brush unit 1 comes into contact with the pallet 31 of FIG. 5 will be described. When the rotary energizing brush unit 1 is installed on a production line, as shown in FIG. 2, the energizing tip 2 is installed in such a direction that the rotating direction of the energizing tip 2 matches the moving direction of the pallet 31 (the direction of the arrow in the figure). I do.

When the pallet 31 is conveyed and moved in a direction indicated by an arrow in FIG. 2 from a position away from the rotary energizing brush unit 1 as shown in FIG. 2A, first, as shown in FIG. When the corner collides with the circumferential surface of the energizing tip 2, the energizing tip 2 starts rotating around the shaft 3.

Subsequently, as shown in FIG.
The long sides 4a, 5a as the columns for supporting the shaft 3 are elastically deformed, so that the current-carrying electrode surfaces 33, 34 (typically, the current-carrying electrode surface 33 in the figure) are provided on the rotating current-carrying tip 2. You will be guided smoothly. Then, as shown from the state in FIG. 3, the energizing tip 2 rotates and comes into contact with the energizing electrode surfaces 33 and 34 of the moving pallet 31. (For example, even when the pallet 31 moves in the direction opposite to the direction shown in FIG. 2, the state shown in FIG. (Contacts 33 and 34.)

FIG. 2B shows a state in which the counter electrode surfaces 33, 34 of the pallet 31 are in contact with the energizing tip 2 of the rotary energizing brush unit 1. When the pallet 31 is stopped in this state, the electric power from the power supply source is continuously supplied to the electric product (not shown) on the pallet 31 via the current-carrying electrode surfaces 33 and 34 and the outlet 32. Inspection of product performance can be performed.

As described above, the energizing tip 2 makes contact with the pallet 31 while rotating, and the energizing tip 2 contacts the pallet 31 at different positions on the circumferential surface for each rotation angle position of the energizing tip 2. Therefore, abrasion of the current-carrying tip 2 is significantly suppressed. As a result, the frequency of replacement of the energizing tip 2 is significantly reduced, so that maintenance costs can be kept low. In addition, as described above, when the energizing tip 2 is replaced, only the energizing tip 2 can be easily replaced as a single item, so that the maintenance cost can be further reduced.

Further, when the pallet 31 collides with the current-carrying tip 2 or when the current-carrying tip 2 is rotated, the electrode surface 3 is turned on.
The impact and stress when contacting the
The elasticity of the long sides 4a, 5a as a support for
Short side 4 supporting the current-carrying tip 2 from both ends
Both the elasticity of b and 5b make it possible to absorb and suppress very well.

Further, the current-carrying tip 2 has a counter electrode surface 33,
When the contact is made, the elasticity of the long sides 4a, 5a and the short sides 4b, 5b causes the current-carrying tip 2 to uniformly adhere to the electrode surfaces 33, 34. Will be maintained.

In the above example, the L-shaped coil springs 4 and 5 share the support as a support for supporting the shaft 3 and the support for sandwiching and supporting the current-carrying tip 2 from both ends. ing. However, the present invention is not limited to this, and separate components may be used as these supporting members.

Further, in the above example, both the support member as a support for supporting the shaft 3 and the support member for sandwiching and supporting the energizing tip 2 from both ends are formed by coil springs. However, the present invention is not limited to this, and one or both of these support members may be formed of an elastic member (for example, a leaf spring or the like) other than the coil spring.

In the above example, both ends of the shaft 3 are supported, and the current-carrying tip 2 is supported by being sandwiched from both ends of the shaft 3. However, the present invention is not limited to this.
May be supported only from one end of the shaft 3.

In the above example, the L-shaped coil springs 4 and 5 are manufactured by bending a conventional coil spring 51 as a product as shown in FIG. However, the present invention is not limited to this, and the L-shaped coil springs 4 and 5 may be manufactured by a method in which the L-shaped coil springs are bent at the coil winding stage in the coil spring manufacturing process.

In the above example, the current-carrying tip 2 is formed of a columnar member rotatable around the shaft 3. However, the present invention is not limited to this, and the energization tip 2 may be formed of a member having an appropriate shape that is rotatable in at least one direction around a predetermined rotation center. Here, for example, if the energizing tip 2 is formed of a spherical member (such as a trackball in a mouse as a pointing device) that can rotate in all directions around the center of the sphere, if the pallet 31
When the moving direction of the
Irrespective of the installation direction of the
Can be brought into contact with the pallet 31 while rotating.

Further, in the above example, the rotary energizing brush according to the present invention is applied to the energizing brush for bringing into contact with the pallet 31 on which the electric product is mounted. However, the present invention is not limited to this, and the rotary energizing brush according to the present invention may be applied to an energizing brush for contacting an electric product directly conveyed without being mounted on a pallet on an electric product manufacturing line. Further, all kinds of energizing brushes (for example, a carbon brush of a DC motor as shown in FIG. 7) other than an energizing brush installed on a production line of electric products,
The rotary energizing brush according to the present invention may be applied.

In the above example, the L-shaped coil springs 4 and 5, which are examples of the coil spring according to the present invention, are used.
Is applied to the rotary energizing brush unit 1. However, the present invention is not limited to this, and the coil spring according to the present invention is applied to all types of products having two or more types of constituent elements required to exhibit elasticity independently in different directions. The element may be shared by this coil spring).

At this time, the wire diameter and size of the coil spring, the position of the bent portion on the coil spring, and the bending angle (whether the angle is set to 90 ° as in the case of the L-shaped coil springs 4 and 5 or other angles) Or the number of bent portions (whether it is one or two or more like the L-shaped coil springs 4 and 5) may be appropriately determined for each product to be adopted. In addition, the present invention is not limited to the above-described embodiments, and may take various other configurations without departing from the gist of the present invention.

[0059]

As described above, according to the rotary energizing brush according to the first aspect of the present invention, the energizing tip contacts the moving body while rotating, and the rotational angular position of the energizing tip. Each time the energizing tip comes into contact with the moving body at a different portion, wear of the energizing tip is significantly suppressed. As a result, the frequency of replacement of the current-carrying tip is significantly reduced, so that maintenance costs can be reduced.

Further, in the rotary energizing brush according to the first aspect, as in the second aspect, the energizing tip is constituted by a columnar member rotatable around an axis, and this axis is supported. In the case of supporting with a material, the following effects can be further obtained. Since the moving body comes into contact with the circumferential surface of the columnar member, the contact state is improved by widening the contact range between the moving body and the current-carrying tip. By removing the columnar member from the shaft, only the current-carrying tip can be easily replaced as a single item, so that the maintenance cost can be further reduced.

According to a second aspect of the present invention, in the rotary energizing brush according to the third aspect, the supporting member for supporting the shaft is formed of a resilient member, and the cylindrical shape is the energizing tip. In the case where the above member is sandwiched and supported from both ends of the shaft by the second support members made of an elastic member, the following effects are further obtained.

The impact or stress when the moving body collides with the energizing tip or when the energizing tip rotates and contacts the moving body is reduced by the elasticity of the supporting material for supporting the shaft and the energizing tip by both ends. Both the elasticity and the elasticity of the second support member sandwiched and supported from above can be absorbed and suppressed very well.
When the current-carrying tip comes into contact with the moving body, the elasticity of these supporting members makes the current-carrying tip uniformly contact the moving body, so that a good contact state can be maintained.

The magnitude of the force required to rotate the current-carrying tip is determined by the elasticity of the second support member that sandwiches and supports the current-carrying tip from both ends. By appropriately selecting the elasticity of the material, the magnitude of the force required to rotate the current-carrying tip according to the magnitude of the force applied from the moving body when the moving body actually collides Can be adjusted appropriately.

Further, in the rotary energizing brush according to the third aspect, as in the fourth aspect, the supporting member for supporting the shaft and the second supporting member are bent to form a bent portion. When both sides of the coil spring having elasticity are independently formed in different directions from each other, the following effects can be further obtained.

Since these two types of support members are shared by one coil spring, the number of parts can be reduced. The power from the power supply source can be supplied to the current-carrying tip portion using the coil spring as a supply path, whereby the coil spring is also used as the power supply wiring, so that the number of parts can be further reduced. .

Next, according to the coil spring according to the fifth aspect of the present invention, since the coil spring has a bent shape, both side portions bordering the bent portion can be independently elastically deformed in different directions from each other. Demonstrate the nature. Therefore, it is required to exhibit elasticity independently in different directions.
When using coil springs for products that include more than one type of components, these components can be shared by one coil spring, thus reducing the number of parts of the product. it can.

By appropriately determining the position of the bent portion on the coil spring, it is possible to arbitrarily set the elasticity ratio of both sides with respect to the bent portion. The direction of elasticity can be arbitrarily set by appropriately determining the bending angle.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a configuration of a rotary energizing brush according to the present invention.

FIG. 2 is a view showing an example of the arrangement of the rotary energizing brush of FIG. 1;

FIG. 3 is a view showing an example of a state of contact between the rotary energizing brush of FIG. 1 and a pallet of FIG. 5;

FIG. 4 is a diagram showing an example of a configuration of a conventional energizing brush.

FIG. 5 is a diagram illustrating an example of the configuration of a pallet;

6 is a diagram showing an example of a state of contact between the energizing brush of FIG. 4 and the pallet of FIG. 5;

FIG. 7 is a diagram illustrating an example of a configuration of a conventional carbon brush.

FIG. 8 is a diagram showing an example of a configuration and the like of a conventional coil spring.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rotary energizing brush unit, 2 ... Energizing tip (roller), 3 ... Shaft, 4, 5 ... L-shaped coil spring, 4a, 5a ... Long side of coil spring, 4
b, 5b: short side of coil spring 6, 7, wiring washer 8, 9, pin 10, main body base 1,
1, 12: fixed screw, 31: pallet, 32: pallet outlet, 33, 34: pallet current-carrying electrode surface

Claims (5)

[Claims] 1. An energizing brush having a conductive energizing tip, and a support member for supporting the energizing tip, and energizing the moving object by contacting the object by bringing the moving object into contact with the energizing tip. A rotary energizing brush, wherein the energizing tip is formed of a member capable of rotating in at least one direction around a predetermined center of rotation. 2. The rotary energizing brush according to claim 1, wherein the energizing tip is formed of a columnar member rotatable around an axis, and the support member supports the axis. And a rotating energizing brush. 3. The rotary energizing brush according to claim 2, wherein the support member is made of an elastic member, and supports the columnar member by sandwiching the cylindrical member from both ends of the shaft. A rotary energizing brush, further comprising a second support member made of a member. 4. The rotary energizing brush according to claim 3, wherein the support member for supporting the shaft and the second support member form an L-shape bent at one position, thereby forming a boundary between the bent portions. The rotary energizing brush according to claim 1, wherein the both side portions of the coil spring have independent elasticity in different directions from each other. 5. A coil spring having a bent shape, whereby both side portions bordering a bent portion have elasticity independently in different directions.