Carbon commutator convenient to install

Abstract

The utility model relates to the field of carbon commutators, and particularly discloses a convenient-to-install carbon commutator, which comprises a carbon sleeve and commutator segments, a plurality of commutator segments are fixed on the periphery of the carbon sleeve in an annular array manner, the bottom of one side of each commutator segment is provided with a turn wire fixing device, the turn wire fixing device comprises a base and a fixing bolt, and the side surface of the base is provided with a turn wire placing groove. A turn wire fixing groove is formed below the turn wire placing groove; limiting grooves are formed in the left side and the right side of the fixing plug pin; two limiting block placing grooves are symmetrically formed in the inner wall of the plug pin inserting groove; through holes are formed in the bottoms of the limiting block placing grooves; one end of the connecting rod is located in the limiting block placing groove and connected with the limiting block, the periphery of the connecting rod is sleeved with the spring, the turn wire fixing device is arranged on the commutator segment, the turn wire of the stator winding is fixed through the turn wire fixing device, a welding connection mode is replaced, the turn wire can be fixed, replacement can be facilitated during replacement, and the replacement efficiency is improved. The workload of workers is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of carbon commutators, in particular to a carbon commutator which is easy to install. Background Art

[0002] The commutator is an important component of the motor. Its function is to alternate the direction of the current in the armature winding to ensure that the direction of the electromagnetic torque remains unchanged.

[0003] During use, the commutator will oxidize or burn due to long-term operation, resulting in poor contact and sparks. The sparks will cause the commutator segments on the outer periphery of the commutator to be burned, and the burned commutator needs to be replaced. Replacing the burned commutator is relatively cumbersome. For example, the existing carbon commutator is generally welded with one end of the stator winding to the copper sheet on the carbon commutator, such as the carbon commutator with patent number CN1125525C. The carbon commutator with this connection method requires a lot of time and effort to replace, so a carbon commutator that is easy to install is needed. Utility Model Content

[0004] The present invention aims to solve the technical problems mentioned in the above background technology and proposes the following technical solutions:

[0005] A carbon commutator that is easy to install includes a carbon sleeve and eight commutator segments, the eight commutator segments being fixed in an annular array to the outer periphery of the carbon sleeve. A wire turn fixing device is provided at the bottom of one side of the eight commutator segments, the wire turn fixing device including a base and a fixing pin. A wire turn placement groove is provided on the side of the base, a pin slot is provided on the top of the base, one end of the fixing pin is located in the pin slot, the pin slot is connected to the top of the wire turn placement groove, a wire turn fixing groove is provided below the wire turn placement groove, the position and size of the wire turn fixing groove correspond to the position and size of the pin slot, limit slots are provided on the left and right sides of the fixing pin, two limit block placement grooves are symmetrically provided on the inner wall of the pin slot, a through hole is provided at the bottom of the limit block placement groove, a connecting rod is provided in the through hole, one end of the connecting rod is located outside the base, the other end of the connecting rod is located in the limit block placement groove and connected to the limit block, a spring is sleeved on the outer periphery of the connecting rod, the spring is located in the limit block placement groove, and one end of the spring is fixedly connected to one side of the limit block.

[0006] Preferably, the bottom of the wire turn fixing groove is a semicircular structure, and the shape of the bottom of the fixing pin is consistent with the shape of the bottom of the wire turn fixing groove.

[0007] Preferably, the upper side of the limiting groove is a bevel structure, and the upper side of the limiting block is a bevel structure.

[0008] Preferably, a pull ring is provided at one end of the connecting rod.

[0009] Preferably, an extraction block is provided on the top of the fixing pin, and a card slot is provided on the extraction block.

[0010] The beneficial effects of the utility model are:

[0011] 1. By setting a turn wire fixing device on the commutator segment, the turn wires of the stator winding are fixed by the turn wire fixing device, replacing the welding connection method. This not only fixes the turn wires, but also facilitates replacement during replacement, reduces the workload of the staff, and improves work efficiency.

[0012] 2. By providing a pull ring at one end of the connecting rod, it is convenient for workers to pull the connecting rod.

[0013] 3. By arranging an extraction block above the fixed latch and arranging a card slot on the extraction block, the fixed latch can be taken out from the latch slot through the card slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic structural diagram of a turn wire fixing device according to an embodiment of the present utility model;

[0016] Figure 3 This is a cross-sectional view of a turn wire fixing device according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the fixing pin structure in the second embodiment of the present utility model.

[0018] In the figure: 1. Carbon sleeve; 2. Commutator segment; 3. Turn wire fixing device; 3-1. Base; 3-2. Fixing pin; 3-21. Limiting groove; 3-3. Turn wire placement groove; 3-4. Pin slot; 3-41. Limiting block placement groove; 3-42. Through hole; 3-5. Turn wire fixing groove; 5. Connecting rod; 6. Pull ring; 7. Limiting block; 8. Spring; 9. Extraction block; 9-1. Slot. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it should be understood that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The connection methods described in the terms "fixed connection" and "fixed arrangement" include but are not limited to "welding", "riveting", "adhesion" and "threaded connection". The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device.

[0021] The directions or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0022] Example 1

[0023] Reference Figure 1-3 A carbon commutator that is easy to install includes a carbon sleeve 1 and eight commutator segments 2. The eight commutator segments 2 are fixed in a ring array on the outer periphery of the carbon sleeve 1. A turn wire fixing device 3 is provided at the bottom of one side of the eight commutator segments 2. The turn wire fixing device 3 includes a base 3-1 and a fixing pin 3-2. A turn wire placement groove 3-3 is provided on the side of the base 3-1. A pin slot 3-4 is provided on the top of the base 3-1. One end of the fixing pin 3-2 is located in the pin slot 3-4. The pin slot 3-4 is connected to the top of the turn wire placement groove 3-3. A turn wire fixing groove 3-5 is provided below the turn wire placement groove 3-3. The turn wire fixing groove 3- 5 position, size and the position of the latch slot 3-4 correspond to the size, limit slots 3-21 are set on the left and right sides of the fixed latch 3-2, two limit block placement slots 3-41 are symmetrically set on the inner wall of the latch slot 3-4, a through hole 3-42 is set at the bottom of the limit block placement slot 3-41, a connecting rod 5 is set in the through hole 3-42, one end of the connecting rod 5 is located outside the base 3-1, and the other end of the connecting rod 5 is located in the limit block placement slot 3-41 and connected to the limit block 7. A spring 8 is sleeved on the outer periphery of the connecting rod 5, the spring 8 is located in the limit block placement slot 3-41, and one end of the spring 8 is fixedly connected to one side of the limit block 7.

[0024] Preferably, the bottom of the wire turn fixing groove 3 - 5 is a semicircular structure, and the bottom shape of the fixing pin 3 - 2 is consistent with the bottom shape of the wire turn fixing groove 3 - 5 .

[0025] Preferably, the upper side of the limiting groove 3 - 21 is a bevel structure, and the upper side of the limiting block 7 is a bevel structure.

[0026] Preferably, a pull ring 6 is provided at one end of the connecting rod 5 .

[0027] In actual operation, when installing the carbon commutator, the carbon sleeve 1 can be first fitted onto the rotor shaft, and then the turns of the stator winding can be pressed into the turn fixing grooves 3-3 respectively. Then, the fixing pin 3-2 can be inserted into the pin slot 3-4. The bottom of the fixing pin 3-2 can press the turns into the turn fixing grooves 3-5. At this time, the two limit blocks 7 in the pin slot 3-4 are located in the limit grooves 3-21 on the left and right sides of the fixing pin 3-2 to prevent the limit pin 3-2 from falling off from the pin slot 3-4. The installation of the carbon commutator is completed.

[0028] When disassembly is required, it is only necessary to pull the pull ring at one end of the connecting rod 5 so that the limit block 7 connected to the other end of the connecting rod 5 overcomes the elastic force of the spring 6 and moves in the pulling direction until the limit block 7 is separated from the limit groove 3-21 on the fixed pin 3-2. At this time, the fixed pin 3-2 is pulled out of the pin slot 3-4, and finally the turn wire is taken out of the turn wire placement groove 3-3.

[0029] Example 2

[0030] Reference Figure 4 The difference between this embodiment and the first embodiment is that an extraction block 9 is provided on the top of the fixed pin 3-2, and a card slot 9-1 is provided on the extraction block 9, so that the staff can easily remove the fixed pin 3-2 from the pin slot 3-3.

Claims

1. A carbon commutator that is easy to install, comprising a carbon sleeve (1) and eight commutator segments (2), wherein the eight commutator segments (2) are fixed in an annular array on the outer periphery of the carbon sleeve (1), characterized in that: A turn wire fixing device (3) is provided at the bottom of one side of the eight commutator segments (2), and the turn wire fixing device (3) includes a base (3-1) and a fixed pin (3-2). A turn wire placement groove (3-3) is provided on the side of the base (3-1), and a pin slot (3-4) is provided on the top of the base (3-1). One end of the fixed pin (3-2) is located in the pin slot (3-4), and the pin slot (3-4) is communicated with the top of the turn wire placement groove (3-3). A turn wire fixing groove (3-5) is provided below the turn wire placement groove (3-3). The position and size of the turn wire fixing groove (3-5) correspond to the position and size of the pin slot (3-4). Limiting grooves (3-21) are provided on the left and right sides of the latch (3-2); two limiting block placement grooves (3-41) are symmetrically provided on the inner wall of the latch slot (3-4); a through hole (3-42) is provided at the bottom of the limiting block placement groove (3-41); a connecting rod (5) is provided in the through hole (3-42); one end of the connecting rod (5) is located outside the base (3-1); the other end of the connecting rod (5) is located in the limiting block placement groove (3-41) and connected to the limiting block (7); a spring (8) is sleeved on the outer periphery of the connecting rod (5); the spring (8) is located in the limiting block placement groove (3-41); and one end of the spring (8) is fixedly connected to one side of the limiting block (7).

2. A carbon commutator that is easy to install according to claim 1, characterized in that: The bottom of the wire turn fixing groove (3-5) is a semicircular structure, and the bottom shape of the fixing pin (3-2) is consistent with the bottom shape of the wire turn fixing groove (3-5).

3. The carbon commutator that is easy to install according to claim 2, characterized in that: The upper side of the limiting groove (3-21) is a bevel structure, and the upper side of the limiting block (7) is a bevel structure.

4. The carbon commutator that is easy to install according to claim 3, characterized in that: A pull ring (6) is provided at one end of the connecting rod (5).

5. The carbon commutator that is easy to install according to claim 3, characterized in that: An extraction block (9) is provided on the top of the fixed latch (3-2), and a card slot (9-1) is provided on the extraction block (9).

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