JP3000833U - Collector brush - Google Patents

Abstract

(57) [Summary] [Structure] A case 2 having an opening 5 formed on one side, a current collector 3 housed in the case 2 so as to project and retract from the opening 5, and a current collector 3 And a biasing means for projecting and biasing the biasing means, and the biasing means is interposed between the current collector 3 and the wall 6 facing the opening 5 of the case 2.
The conductive wire 13 is connected to the contact portion of the elastic body 4 with respect to the opposing wall 6. [Effect] Since the conductive wire 13 is connected to the contact portion of the elastic body 4 that does not move even if the current collector 3 reciprocates, the conductive wire 13 is connected to the reciprocating motion of the current collector 3.
There is no fatigue disconnection, and it can perform its function stably for a long period of time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a current collecting brush that feeds power to a moving body by sliding on a power feeding rail.

[0002]

[Prior art]

 Conventionally, as a method of supplying power to a moving body, when the moving distance of the moving body is relatively short, a method of connecting with a power feeding cable has been adopted, but the moving distance is long and the power feeding cable is an obstacle. In this case, a power feeding rail connected to the power source is arranged along the moving path of the moving body, and a collecting brush that slides on the feeding rail is arranged on the moving body. The method of connecting with the above load is adopted. Referring to FIG. 6, reference numeral 31 is a movable body that can move along a fixed path, and a power supply rail 32 connected to a three-phase power source (not shown) is arranged along the moving path. Then, a current collecting brush 33 is attached to the moving body 31 so as to slide on each power feeding rail 32 in accordance with the movement thereof, and the current collecting brush 33 and a three-phase motor 35 as a load are connected by a conductive wire 34. It is connected. In this way, power is supplied from the power source to the three-phase motor 35 through the power feeding rail 32, the current collecting brush 33, and the conductive wire 34. The power supply rail 32 may be arranged on the moving body 31 side and the current collecting brush 33 may be arranged on the fixed side.

As shown in FIGS. 7 and 8, a conventional current collecting brush 33 has a current collector 43, which is projectable and retractable from the opening 42 in a case 41 having an opening 42 formed on one side thereof. The housing 41 is housed, and a wall facing the opening 42 of the case 41 is formed by a lid 44 that can be attached to the case body 42a. The current collector 43 is urged to project from the opening 42 by being interposed, the conductive wire 46 is connected to the current collector 43, and the conductive wire 46 is drawn from the window 47 formed near the lid 44 on the side wall of the case 41. I have put it out.

According to such a configuration of the current collecting brush 33, since the current collector 43 can move in and out and is pressed toward the power feeding rail 32 by the compression coil spring 45, the length of the power feeding rail 32 is increased. Even if there is unevenness in the direction or undulations in the up-down direction, the current collector 43 follows and moves back and forth, and the current collector 43 always moves in contact with the power supply rail 32 to move the moving body 3. Along with this, the power supply rail 32 slides on the power supply rail 32 to reliably supply power.

[0005]

[Problems to be solved by the device]

 However, as described above, when the current collector 43 moves back and forth in the longitudinal direction of the power feeding rail 32 in accordance with the unevenness and the swell in the vertical direction, the conductive wire 46 is connected to the current collector 43. As shown by the solid line and the phantom line in FIG. 8, the conductive wire 46 also repeats the vertical movement together with the current collector 43, so that a considerably large repetitive stress is applied to the connection portion 48 between the conductive wire 46 and the current collector 43. There is a problem in that the conductive wire 46 often breaks at this portion due to fatigue.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to propose a current collecting brush in which the conductive wire is prevented from being broken due to reciprocating movement of the current collector.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides the case 2 in which the opening 5 is formed on one side and the case 2 in the case 2 in the claim 1, as indicated by the reference numerals in the drawings. In the current collecting brush 1 including the current collector 3 that is housed and arranged so as to project and retract from the opening 5, and the urging means that urges the current collector 3 to project, the urging means is the case 2. The elastic body 4 having conductivity is interposed between the counter wall 6 facing the opening 5 and the current collector 3, and the conductive wire 13 is connected to the contact portion of the elastic body 4 with respect to the counter wall 6. The configuration will be adopted.

According to a second aspect of the present invention, the elastic body 4 is made of phosphor bronze, and the configuration according to the first aspect is adopted.

According to a third aspect of the invention, the structure according to claim 1 or 2 in which the elastic body 4 is composed of the substantially C-shaped leaf spring material 11 is adopted.

In the fourth aspect, the intermediate portion 11b of the substantially C-shaped leaf spring material 11 serves as a contact portion for the current collector 3, and both end portions 11a serve as a contact portion for the facing wall 6. The configuration according to claim 3 is adopted.

According to a fifth aspect, the structure according to any one of the first to fourth aspects is adopted in which the contact portion of the elastic body 4 with respect to the current collector 3 is brazed 12.

According to a sixth aspect of the present invention, the configuration according to any one of the first to fourth aspects is adopted in which the contact portion of the elastic body 4 with respect to the current collector 3 is screwed 22.

According to a seventh aspect of the present invention, both ends 11a of the substantially C-shaped leaf spring member 11 are provided with C-shaped outwardly projecting engaging portions 17, and the engaging portions 17 are engaged with each other. The concavity 18 to be fitted is formed on the current collector 3, and the vicinity of the engaging portion 17 is brazed to the current collector 3 by brazing 12.

According to an eighth aspect, the structure according to any one of the first to seventh aspects is adopted in which the contact portion of the elastic body 4 is fixed to the facing wall 6 of the case 2 with the fixing screw 15. Is.

According to a ninth aspect, the window 16 is opened at a side portion of the facing wall 6 of the case 2, and the conductive wire 13 is led out from the window 16 to the outside of the case 2. Is adopted.

According to a tenth aspect of the present invention, a conductive member 19 having a tip 19 a fixed to the elastic body 4 and fixed by penetrating the opposing wall 6 of the case 2 is provided, and the conductive wire 13 is connected to the conductive member 19. The configuration according to any one of claims 1 to 8 is adopted.

In the eleventh aspect, the current collector 3 is housed in the case 2 having the opening 5 formed on one side so that the current collector 3 can project and retract from the opening 2. The opposing wall 6 to the casing 5 is composed of a lid 7 that can be attached to the case body 2a, and a substantially C-shaped leaf spring material 11 having conductivity is interposed between the lid 7 and the current collector 3. Then, the contact portion of the leaf spring material 11 with respect to the current collector 3 is fixed by brazing 12 or screw fixing 22, and the contact portion of the leaf spring material 11 with respect to the lid body 7 is fixed to the lid body 7 and electrically conductive. A configuration in which the line 13 is connected is adopted.

[0018]

[Action]

 According to claim 1 of the present invention, since the elastic body 4 having conductivity is interposed between the opposing wall 6 and the current collector 3, a current flows from the current collector 3 to the elastic body 4. Since the conductive wire 13 is connected to the contact portion of the elastic body 4 that does not move even if the current collector 3 reciprocates, the conductive wire 13 is connected to the reciprocating motion of the current collector 13. There is no fatigue disconnection, and it can perform its function stably for a long period of time. As the elastic body 4, any material and shape can be used as long as it has sufficient conductivity and can secure a necessary displacement amount and elastic coefficient.

In the second aspect, since the elastic body 4 is made of phosphor bronze, it is possible to easily secure sufficient conductivity, a necessary displacement amount, and an elastic coefficient.

According to the third aspect, since the elastic body 4 is composed of the substantially C-shaped leaf spring material 11, both the required energizing area and the required displacement amount can be secured at the same time, and the manufacturing is easy.

In the fourth aspect, since the intermediate portion 11b of the substantially C-shaped leaf spring material 11 is used as the abutting portion against the current collector 3, the contact area with the current collector 3 is large and A stable contact state can always be ensured, and a stable energization state can be maintained between both without fixing them to each other. Of course, it goes without saying that they may be fixed to each other.

According to the fifth aspect, since the contact portion between the elastic body 4 and the current collector 3 is brazed 12, it is possible to maintain a stable energized state between them.

According to the sixth aspect, since the abutting portion between the elastic body 4 and the current collector 3 is fixed with the screw 22, it is possible to maintain a stable energized state between them.

According to the present invention, when the both ends 11 a of the C-shaped leaf spring material 11 and the current collector 3 are brazed together 12, the engagement is made to project from both ends 11 a of the leaf spring material 11. Since the portion 17 is fitted into and engaged with the concave portion 18 formed in the current collector 3, reciprocating motion of the current collector 3 causes repetitive stress acting on both end portions 11 a of the leaf spring material 11 to be applied to the engaging portion 17. It is possible to eliminate the possibility of peeling due to repeated stress directly acting on the brazed portion 12 and to maintain a stable energized state for a long period of time.

Since the contact portion of the elastic body 4 is fixed to the facing wall 6 of the case 2, the connecting portion of the conductive wire 13 connected to this contact portion is completely fixed. It is possible to eliminate the risk of fatigue disconnection.

According to the ninth aspect, since the window 16 is opened at the side portion of the facing wall 6 of the case 2, the conductive wire 13 can be easily led out of the case 2 from the window 16.

According to the tenth aspect of the invention, the conductive wire 19 is connected to the outside of the case 2 by providing the conductive member 19 having the tip 19a fixed to the elastic body 4 and penetrating the facing wall 6 of the case 2. can do.

Further, in the eleventh aspect, a substantially C-shaped leaf spring material 11 having conductivity is interposed between the cover body 7 and the current collector 3 which form the facing wall 6, and The contact portion of the spring material 11 with respect to the current collector 3 is fixed by brazing 12 or a screw 22, and the contact portion of the leaf spring material 11 with respect to the lid 7 is fixed to the lid 7 and the conductive wire 13 is provided. The cover 7 is attached to the case 2 so that the current collector 3 is housed in the case 2 with the current collector 3 fixed to the cover 7 via the leaf spring material 11. This makes it easy to assemble.

[0029]

【Example】

 Hereinafter, an embodiment of the current collecting brush of the present invention will be described with reference to FIGS.

Example 1 First, a first example will be described with reference to FIGS. 1 and 2. A current collecting brush 1 is composed of a case 2, a current collector 3, and an elastic body 4.

The case 2 has a flat rectangular box shape, and a case main body 2 a having an opening 5 formed on one side wall having a narrow width along the long side, leaving both ends in the longitudinal direction, and a wall facing the opening 5. The cover body 7 is attached to the case body 2a so as to form the body 6. A locking piece 8 is provided which is elastically deformable from the vicinity of both ends of the lid 7 and has an engaging portion 8a protruding outwardly at its tip, and engaging holes 9 are formed in both end walls of the case body 2a. By pressing the piece 8 into the case body 2a, the engaging portion 8a is inserted into and engaged with the engaging hole 9, and the lid 7 is attached. Further, mounting flanges 10 are provided so as to project from both longitudinal ends of the case body 2a.

The current collector 3 is made of a copper plate, has a thickness that allows the current collector 3 to be movably fitted in the case 2, and a current collector 3 a protruding from the opening 5 of the case 2 so as to be retractable and one side wall of the case 2. And a flange portion 3b which is engaged with both end portions of the casing to prevent it from coming out of the case 2.

The elastic body 4 is composed of a substantially C-shaped leaf spring material 11 made of phosphor bronze. Both ends 11 a of the elastic body 4 are brazed 12 to be electrically connected to the current collector 3 and mechanically. Is fixed. Further, the intermediate portion 11b of the leaf spring material 11 is in contact with the lid body 7 in a state where the leaf spring material 11 is elastically compressed, whereby the current collector 3 is attached so as to project from the opening 5. It is energized. A connection terminal 13a provided at one end of the conductive wire 13 is brazed 14 to the intermediate portion 11b of the leaf spring material 11 to electrically connect the leaf spring material 11 and the conductive wire 13. Further, it is fixed to the lid body 7 with a fixing screw 15 penetrating the connection terminal 13a and the middle portion 11b of the leaf spring material 11. Further, the connection terminal 13a of the conductive wire 13 is led out of the case 2 through a window 16 opened in the side wall of the case body 2a.

According to the above configuration, when the current collecting brush 1 moves relative to the power feeding rail (not shown), the current collector 3 slides on the power feeding rail, so that the current collecting body moves from the power feeding rail. 3 flows a current, and a substantially C-shaped leaf spring material 11 made of phosphor bronze having good conductivity is interposed between the current collector 3 and the lid body 7. A current flows through the intermediate portion 11b via both ends 11a of the spring material 11, and the current is taken out from the connection terminal 13a connected to the intermediate portion 11b to the conductive wire 13 to supply power to a load (not shown).

At this time, the middle portion 11b of the leaf spring material 11 to which the conductive wire 13 is connected does not move even if the current collector 3 reciprocates due to the unevenness of the power feeding rail or the swell in the vertical direction. Since the conductive wire 13 does not move due to the reciprocating movement of the current collector 3, the conductive wire 13 does not become disconnected due to fatigue, and the function can be stably performed for a long period of time.

Further, since the elastic body 4 is composed of the substantially C-shaped leaf spring material 11 made of phosphor bronze, it is possible to easily secure sufficient conductivity, a necessary displacement amount and an elastic coefficient. In addition, it is possible to easily manufacture while simultaneously securing both the required energizing area and the amount of displacement at the same time.

Further, since both ends 11a of the leaf spring material 11 and the current collector 3 are brazed to each other 12, a stable energization state can be maintained between them, and the middle portion 11b of the leaf spring material 11 can be maintained. On the other hand, since the connection terminal 13a of the conductive wire 13 is brazed 14, a complete conductive state can be secured from the collector 3 to the conductive wire 13.

Furthermore, since the intermediate portion 11b of the leaf spring material 11 is fixed to the lid 7 with the fixing screw 15, the connecting portion of the conductive wire 13 is completely fixed, and there is no fear of fatigue disconnection. Further, the cover body 7 is mounted on the case body 2a such that the current collector 3 is housed in the case body 2a while the current collector 3 is fixed to the lid body 7 via the leaf spring material 11. Therefore, the current collecting brush 1 can be easily assembled.

Second Embodiment Next, a second embodiment will be described with reference to FIG. The same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Only different portions of the configuration will be described.

In FIG. 3, a C-shaped outwardly projecting engaging portion 17 is provided at both ends 11 a of the leaf spring material 11, and a concave portion 18 into which the engaging portion 17 is fitted and engaged is provided with a current collector 3. , And the portion near the engaging portion 17 is brazed 12 to the current collector 3. Further, the tip 19a is fixed to the leaf spring material 11 by brazing 20, and a conductive member 19 penetrating the lid 7 is provided, and a nut 21 screwed to the conductive member 19 is used to connect the conductive wire 13 to the conductive wire 13. The connection terminal 13a is electrically connected to the conductive member 19 and mechanically fixed to the lid 7.

According to this embodiment, when the both ends 11 a of the leaf spring material 11 and the current collector 3 are brazed together 12, the engaging portions 17 projecting from the both ends 11 a of the leaf spring material 11 collect current. Since the recesses 18 formed in the body 3 are fitted and engaged, the reciprocating movement of the current collector 3 can support the repetitive stress acting on both end portions 11a of the plate elastic member 11 by the engaging portions 17, so that brazing Since the repeated stress does not act directly on the 12th part, the fear of peeling of the brazing 12 can be eliminated, and a stable energized state can be maintained for a long period of time. Further, by providing the conductive member 19 penetrating the lid 7, the conductive wire 13 can be connected outside the case 2.

Third Embodiment Next, a third embodiment will be described with reference to FIG. The same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Only different portions of the configuration will be described.

In FIG. 4, both ends 11a of the leaf spring material 11 are fixed to the current collector 3 by brazing 12 in the above embodiment, but in this embodiment, both ends 11a of the leaf spring material 11 are fixed. It is fixed to the current collector 3 with a space 22 for electrical connection and mechanical fixation. In this way, the stable energization between the two can be maintained even by screwing.

Further, in this embodiment, the intermediate portion 11b of the leaf spring material 11 is not fixed only by being brought into contact with the lid body 7, but the tip of the conductive wire 13 is brazed 14 to the intermediate portion 11b to electrically connect the lid portion 7 to the lid portion 7. Connected. By connecting the conducting wire 13 to the intermediate portion 11b of the leaf spring material 11 that is brought into contact with the lid body 7 as described above, the connecting portion of the conductive wire 13 does not move even when the current collector 3 reciprocates. Since the conductive wire 13 is scarcely present, the conductive wire 13 is not broken due to fatigue, and the structure is simple.

Fourth Embodiment Next, a fourth embodiment will be described with reference to FIG. The same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Only different portions of the configuration will be described.

In FIG. 5, in the above embodiment, both end portions 11 a of the substantially C-shaped leaf spring material 11 are brought into contact with and fixed to the current collector 3, and the intermediate portion 11 b is fixed or brought into contact with the lid body 7. However, in this embodiment, the intermediate portion 11b of the substantially C-shaped leaf spring material 11 is brought into contact with the current collector 3 and both end portions 11a are brought into contact with the lid body 7, both of which are brazed to each other. The ends of the conductive wire 13 are not brazed with screws, screws 22 or fixing screws 15 but are brazed 14 to the ends 11a for electrical connection.

As described above, by bringing the intermediate portion 11b of the substantially C-shaped leaf spring material 11 into contact with the current collector 3, a large contact area with the current collector 3 can be secured and a stable contact state can be obtained. Can always be secured. Therefore, even if the leaf spring material 11 and the current collector 3 are not fixed to each other, a stable energization state can be maintained between them. Further, by connecting the conductive wire 13 to the end portion 11a of the leaf spring material 11 that is brought into contact with the lid body 7, even if the current collector 3 moves back and forth, the connection portion of the conductive wire 13 does not move. Almost no conductive wire 13 is broken due to fatigue. In this embodiment, the structure is extremely simple.

The present invention is not limited to the above embodiments, but can be carried out in a state in which the respective constituent elements are variously combined based on the description in each claim.

[0049]

[Effect of device]

 According to the first aspect of the present invention, since the elastic body having conductivity is interposed between the opposing wall and the current collector, a current flows from the current collector to the elastic body, and the current in the elastic body is collected. Since the conductive wire is connected to the abutting part against the opposing wall that does not move even if the current collector reciprocates, the conductor wire does not fatigue and disconnect with the reciprocating motion of the current collector, and it is stable over a long period of time. It exerts the effect that it can fulfill its function.

According to the second aspect, since the elastic body is made of phosphor bronze, it is possible to easily secure sufficient conductivity, a necessary displacement amount, and an elastic coefficient.

According to the third aspect, since the elastic body is made of the substantially C-shaped leaf spring material, both the required energization area and the required displacement amount can be secured at the same time, and the manufacturing is easy.

According to the fourth aspect, since the intermediate portion of the substantially C-shaped leaf spring member is the contact portion with the current collector, the contact area with the current collector is large and a stable contact state is always maintained. Therefore, it is possible to maintain a stable energization state between the two without fixing them to each other.

According to the fifth aspect, since the contact portion between the elastic body and the current collector is brazed, it is possible to maintain a stable energized state between them.

According to the sixth aspect, since the abutting portion between the elastic body and the current collector is fixed with a screw, a stable energized state can be maintained between them.

According to the seventh aspect, when the both ends of the elastic body and the current collector are brazed, the engaging portions projecting from both ends of the substantially C-shaped leaf spring material are used as the current collector. Since it is fitted and engaged in the formed concave part, the reciprocating action of the current collector can support the repetitive force acting on both ends of the elastic body by the engaging part, and the repetitive stress acts directly on the brazed part. The fear of peeling can be eliminated, and stable energization can be maintained for a long period of time.

According to the eighth aspect, since the contact portion of the elastic body is fixed to the facing wall of the case, the connection portion of the conductive wire connected to this contact portion can be completely fixed, and the fatigue disconnection The fear of can be completely eliminated.

According to the ninth aspect, since the window is opened at the side portion of the opposite wall of the case, the conductive wire can be easily led out of the case from the window.

According to the tenth aspect, since the tip end is fixed to the elastic body and the conductive member penetrating the opposite wall of the case is provided, the conductive wire can be connected outside the case.

Further, according to the eleventh aspect, a substantially C-shaped leaf spring material having conductivity is interposed between the cover body and the current collector forming the facing wall, and the current collection of the leaf spring material is performed. The contact part to the body is fixed by brazing or screwing, the contact part to the lid of the leaf spring material is fixed to the lid, and the conductive wire is connected, so the leaf spring material is attached to the lid. By assembling the current collector into the case with the current collector fixed via the cover and attaching the lid to the case, the assembly can be easily performed.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a current collecting brush according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a vertical sectional front view of a current collecting brush according to a second embodiment of the present invention.

FIG. 4 is a vertical sectional front view of a current collecting brush according to a third embodiment of the present invention.

FIG. 5 is a vertical sectional front view of a current collecting brush according to a fourth embodiment of the present invention.

FIG. 6 is a schematic configuration diagram of a power feeding device using a current collecting brush.

FIG. 7 is a vertical cross-sectional front view of a conventional collecting brush.

8 is a cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 Current Collection Brush 2 Case 2a Case Body 3 Current Collector 4 Elastic Body 5 Opening 6 Opposing Wall 7 Lid 11 Leaf Spring Material 11a Both Ends 11b Intermediate Part 12 Brazing 13 Conductive Wire 15 Fixing Screw 16 Window 17 Engaging Part 18 Recess 19 conductive member 22 screw

Claims (11)

[Scope of utility model registration request] 1. A case having an opening formed on one side, a current collector housed in the case so as to project and retract from the opening, and a biasing means for biasing the current collector to project. In the provided current collecting brush, the urging means is composed of a conductive elastic body interposed between a wall facing the opening of the case and the current collector, and the biasing means conducts electricity to a contact portion of the elastic body against the facing wall. A current collecting brush characterized by connecting wires. 2. The current collecting brush according to claim 1, wherein the elastic body is made of phosphor bronze. 3. The current collecting brush according to claim 1, wherein the elastic body is formed of a substantially C-shaped leaf spring material. 4. The current collecting brush according to claim 3, wherein an intermediate portion of the substantially C-shaped leaf spring member is a contact portion for the current collector, and both end portions are a contact portion for the opposing wall. . 5. The current collecting brush according to claim 1, wherein a contact portion of the elastic body with respect to the current collector is brazed. 6. The current collecting brush according to claim 1, wherein a contact portion of the elastic body with respect to the current collector is fixed with a screw. 7. A C-shaped outwardly protruding engaging portion is provided at both ends of a substantially C-shaped leaf spring material, and a concave portion into which this engaging portion is fitted and engaged is formed in the current collector. The current collecting brush according to claim 3, wherein a portion near the engaging portion is brazed to the current collector. 8. The current collecting brush according to claim 1, wherein an abutting portion of an elastic body is fixed to a facing wall of the case. 9. The current collecting brush according to claim 1, wherein a window is opened in a side portion of the opposite wall of the case, and the conductive wire is led out of the case from the window. 10. A conductive member having a tip fixed to an elastic body and fixed by penetrating an opposite wall of the case, and a conductive wire is connected to the conductive member. Current collecting brush described in crab. 11. A lid body in which a current collector is housed in a case having an opening formed in one side so as to project and retract from the opening, and a wall facing the opening of the case can be attached to a case body. And a conductive C-shaped leaf spring material is interposed between the lid body and the current collector, and the contact portion of the leaf spring material with respect to the current collector is brazed or screwed. The current collecting brush is characterized in that the contact portion of the leaf spring material with respect to the lid is fixed to the lid and a conductive wire is connected.