Slide wire current collector

Abstract

The utility model discloses a slide wire current collector which comprises a current collector body, the current collector body is provided with a plurality of brush accommodating parts, the brush accommodating parts are used for installing electric brushes, two sides of each brush accommodating part are provided with limiting grooves, the upper parts of the electric brushes abut against middle connecting sections of constant-force springs, and two ends of each middle connecting section are curved ends of the constant-force springs. One side of the electric brush is provided with a limiting sliding groove, the brush containing part is provided with an anti-disengagement protruding part corresponding to the limiting sliding groove, the limiting sliding groove is clamped in the anti-disengagement protruding part, stable brush pressure is kept between the electric brush and the sliding contact line component through the constant-force spring, excessive abrasion of the electric brush caused by brush pressure change is avoided, and the service life of the electric brush is prolonged. And the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of current collector technology, specifically to a sliding contact line current collector. Background Technology

[0002] For mechanical equipment that needs to be moved, sliding contact current collectors and sliding contact lines are often used to provide power. The current collector usually moves with the mechanical equipment, and brushes are installed on it to slide and connect to the sliding contact line, thereby ensuring continuous power supply. In the prior art, such as patent publication number CN209336502U, a current collector for a sliding contact line is disclosed, including a brush in contact with the sliding contact line, the brush being rotatably connected to an intermediate shaft, and a mounting component. The intermediate shaft is slidably mounted on the mounting component, and a limiting mechanism is provided between the intermediate shaft and the mounting component to control the maximum distance the intermediate shaft moves towards the sliding contact line. Spring clamping mechanisms are respectively provided between the two ends of the brush and the mounting component. The spring clamping structure is as follows: the two ends of the brush and the mounting component are respectively connected by a limiting shaft, and a compression spring is provided on the limiting shaft between the brush and the mounting component. The compression spring of the spring clamping mechanism clamps the brush and the sliding contact line to make them in close contact. However, the compression spring has a large deformation, and the force varies for objects with different heights and pressures. This is not conducive to reducing the wear generated when the brush slides in contact with the sliding contact line, and is not conducive to further improving the service life of the brush. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background art and to provide a sliding contact line current collector.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A sliding contact line current collector includes a current collector body with a plurality of brush-receiving portions for mounting brushes. Limiting grooves are provided on both sides of the brush-receiving portions. The upper part of the brush abuts against the middle connecting section of a constant force spring. Both ends of the middle connecting section are coiled ends of the constant force spring, and the two coiled ends are respectively installed in the limiting grooves on both sides. A limiting groove is provided on one side of the brush, and an anti-detachment protrusion is provided on the side wall of the brush-receiving portion corresponding to the limiting groove. The limiting groove is engaged with the anti-detachment protrusion.

[0006] In some embodiments of this utility model, a roller is arranged in the limiting groove, and the roller is used to install the coiled end of the constant force spring, which is wound around the roller.

[0007] In some embodiments of this utility model, the sidewall of the limiting groove is provided with a support end, and the support end is provided with an arc-shaped contact end surface corresponding to the curved end.

[0008] In some embodiments of this invention, the upper part of the brush is provided with a transitional rounded chamfer.

[0009] In some embodiments of this utility model, the brush contacts the conductive sheet of the sliding contact line component, and the back of the sliding contact line component is mounted in the groove of the guide rail by a second snap fastener.

[0010] In some embodiments of this utility model, the current collector body includes a fixed base housing, the brush receiving part is arranged inside the fixed base housing, the brush receiving part penetrates through the fixed base housing, and a top end cap is attached to the upper part of the fixed base housing by screws.

[0011] In some embodiments of this utility model, a wiring part is arranged inside the fixed base housing. The wiring part is located on one side of the brush housing. A circuit board terminal block is installed inside the wiring part, and the brush is connected to the circuit board terminal block through a wire.

[0012] In some embodiments of this utility model, first buckles are symmetrically arranged inside the wiring section, and the circuit board terminal block is installed inside the wiring section through the first buckles.

[0013] In some embodiments of this utility model, the side of the brush receiving part is provided with a wiring opening, and the adjacent brush receiving parts are provided with a wiring space. The wire passes through the wiring opening and then through the wiring space to reach the connection part.

[0014] In some embodiments of this utility model, the limiting groove and the limiting slide groove are located on different sides, and the limiting slide groove and the wiring opening are located on the same side.

[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0016] 1. By applying elastic restoring force to the brush through a constant force spring, the brush pressure between the brush and the sliding contact line component can be maintained stably. The brush is always in contact with the sliding contact line component during the sliding process, reducing the possibility of poor contact between the brush and the sliding contact line component, and avoiding excessive wear of the brush due to changes in brush pressure. At the same time, the constant force spring adopts a double-coil curved end design, which makes the force on both sides uniform, the stability more reliable, and helps to improve the service life.

[0017] 2. Wiring openings are provided on the side of the brush section, and wiring spaces are set between adjacent brush sections. After the wires pass through the wiring openings, they reach the circuit board terminal block of the wiring section through the wiring space, making the internal structure of the mounting housing more compact. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the wiring opening arrangement of this utility model;

[0021] Figure 3 This is a schematic diagram of the sliding contact line component of this utility model;

[0022] Figure 4 This is a schematic diagram of the arrangement of the limiting slide groove of this utility model;

[0023] Figure 5 This is a schematic diagram showing the arrangement of the anti-detachment protrusions of this utility model;

[0024] Figure 6 This is a schematic diagram of the initial state of the brush of this utility model;

[0025] Figure 7 This is a schematic diagram of the wear limit state of the brush of this utility model;

[0026] Figure 8 This is a schematic diagram of Embodiment 2 of the present invention;

[0027] Explanation of key figure labels:

[0028] 1. Current collector body; 10. Brush housing; 11. Limiting groove; 12. Support end; 13. Anti-detachment protrusion; 14. Fixing base housing; 15. Wiring part; 16. Wiring opening; 17. Wiring space; 18. First buckle; 19. Top end cover; 2. Brush; 20. Transition rounded chamfer; 21. Limiting slide groove; 22. Wire; 3. Sliding contact line component; 30. Guide rail; 4. Constant force spring; 40. Intermediate connecting section; 41. Curved end; 140. Wire insertion opening; 150. Circuit board terminal block; 190. Screw. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0030] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0031] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0032] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0033] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0034] Example 1, see Figure 1-7 :

[0035] A current collector for a sliding contact line includes a current collector body 1, which has several brush-holding portions 10 for mounting brushes 2. The brushes 2 contact the conductive plates of the sliding contact line component 3. Limiting grooves 11 are provided on both sides of the brush-holding portions 10. The upper part of the brushes 2 abuts against the middle connecting section 40 of a constant force spring 4. Both ends of the middle connecting section 40 are coiled ends 41 of the constant force spring 4. The two coiled ends 41 are respectively installed in the limiting grooves 11 on both sides. After the constant force spring 4 is installed, it is in the initial state and under tension. The spring force acts on the brushes 2 on the lower side of the middle connecting section 40, so that the brushes 2 contact the conductive plates of the sliding contact line component 3. The double coiled end design makes the force on both sides uniform, the stability more reliable, and helps to improve the service life. The current collector slides back and forth along the sliding contact line. As the working time goes by, the brushes 2 wear down continuously. When the brushes 2 wear down to the limit, the service life of the brushes 2 is over and they need to be replaced with new brushes 2.

[0036] As one implementation, the upper part of the brush 2 is provided with a transition arc chamfer 20, which makes the corner where the brush 2 contacts the constant force spring 4 smoother and the constant force spring 4 less prone to damage.

[0037] In one implementation, the brush 2 is a carbon brush.

[0038] In one embodiment, the number of the brush holder 10 and the corresponding brushes 2 is 2-6. Preferably, the number of brushes 2 is 4, and the 4 brushes 2 are arranged side by side along the width direction of the brushes 2.

[0039] In one embodiment, a roller is arranged in the limiting groove 11. The roller is used to install the coiled end 41 of the constant force spring 4, and the coiled end 41 is wound around the roller.

[0040] In one embodiment, the sidewall of the limiting groove 11 is provided with a plurality of supporting ends 12, which are divided into left and right rows in any sidewall of the limiting groove 11, and the supporting ends 12 are provided with arc-shaped contact end faces corresponding to the curved ends 41.

[0041] The brush 2 is provided with a limiting groove 21 on one side, and the brush receiving part 10 is provided with an anti-detachment protrusion 13 on the side wall corresponding to the limiting groove 21. The limiting groove 21 is locked in the anti-detachment protrusion 13 to prevent the brush 2 from detaching from the brush receiving part 10.

[0042] In one embodiment, the back of the sliding contact line component 3 is mounted in the slot of the guide rail 30 via a second snap fastener.

[0043] In one embodiment, the current collector body 1 includes a fixed base housing 14, and the brush receiving portion 10 is arranged inside the fixed base housing 14, penetrating through the fixed base housing 14 to facilitate the installation of the constant force spring 4 and the brush 2. A top end cover 19 is fastened to the upper part of the fixed base housing 14 by screws 190. It is understood that the top end cover 19 and the fixed base housing 14 are respectively provided with a number of mounting holes.

[0044] In one embodiment, a wiring portion 15 is arranged inside the fixed base housing 14. The wiring portion 15 is located on one side of the brush housing 10. A circuit board terminal block 150 is installed inside the wiring portion 15. The brush 2 is connected to the circuit board terminal block 150 through a wire 22. The output port of the circuit board terminal block 150 faces outward from the fixed base housing 14. The fixed base housing 14 has a wire insertion opening 140 corresponding to the output port.

[0045] In one embodiment, a first latch 18 is arranged inside the wiring part 15. There are two first latches 18, which are symmetrically arranged on both sides of the wiring part 15. The circuit board terminal block 150 is installed inside the wiring part 15 through the first latches 18.

[0046] In one embodiment, the brush receiving part 10 is provided with a wiring opening 16 on its side, and a wiring space 17 is provided between adjacent brush receiving parts 10. The wire 22 passes through the wiring opening 16 and then through the wiring space 17 to reach the circuit board terminal block 150 of the wiring part 15.

[0047] In one embodiment, the limiting groove 11 and the limiting slide 21 are located on different sides, and the limiting slide 21 and the wiring opening 16 are located on the same side.

[0048] Example 2, see Figure 8 :

[0049] The same embodiment 1 is repeated, but the number of the brush-containing part 10 and the corresponding brush 2 is 4, and the four brushes 2 are arranged in two rows and two columns.

[0050] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A sliding contact line current collector, characterized in that: The device includes a current collector body (1), which is provided with several brush-holding parts (10). The brush-holding parts (10) are used to install brushes (2). Limiting grooves (11) are provided on both sides of the brush-holding parts (10). The upper part of the brush (2) abuts against the middle connecting section (40) of the constant force spring (4). Both ends of the middle connecting section (40) are the coiled ends (41) of the constant force spring (4). The two coiled ends (41) are respectively installed in the limiting grooves (11) on both sides. A limiting slide groove (21) is provided on one side of the brush (2). The brush-holding parts (10) are provided with anti-detachment protrusions (13) corresponding to the limiting slide groove (21). The limiting slide groove (21) is locked in the anti-detachment protrusions (13).

2. The sliding contact line current collector according to claim 1, characterized in that: A roller is arranged in the limiting groove (11). The roller is used to install the coiled end (41) of the constant force spring (4). The coiled end (41) is wound around the roller.

3. A sliding contact line current collector according to claim 2, characterized in that: The side wall of the limiting groove (11) is provided with a support end (12), and the support end (12) is provided with an arc-shaped contact end face corresponding to the curved end (41).

4. A sliding contact line current collector according to claim 1, characterized in that: The upper part of the brush (2) is provided with a transition arc chamfer (20).

5. A sliding contact line current collector according to claim 1, characterized in that: The brush (2) contacts the conductive sheet of the sliding contact line component (3), and the back of the sliding contact line component (3) is installed in the groove of the guide rail (30) by a second buckle.

6. A sliding contact line current collector according to any one of claims 1-5, characterized in that: The current collector body (1) includes a fixed base housing (14), the brush receiving part (10) is arranged inside the fixed base housing (14), the brush receiving part (10) penetrates the fixed base housing (14), and a top end cap (19) is fastened to the upper part of the fixed base housing (14) by screws (190).

7. A sliding contact line current collector according to claim 6, characterized in that: The mounting housing (14) has a wiring section (15) located on one side of the brush housing (10). A circuit board terminal block (150) is installed in the wiring section (15), and the brush (2) is connected to the circuit board terminal block (150) through a wire (22).

8. A sliding contact line current collector according to claim 7, characterized in that: The wiring section (15) is symmetrically arranged with first buckles (18), and the circuit board terminal block (150) is installed in the wiring section (15) through the first buckles (18).

9. A sliding contact line current collector according to claim 7, characterized in that: The brush holder (10) has a wiring opening (16) on its side, and a wiring space (17) is provided between adjacent brush holders (10). The wire (22) passes through the wiring opening (16) and then through the wiring space (17) to reach the connector (15).

10. A sliding contact line current collector according to claim 9, characterized in that: The limiting groove (11) and the limiting slide groove (21) are located on different sides, while the limiting slide groove (21) and the wiring opening (16) are located on the same side.

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