Commutator with positioning function

Abstract

The utility model relates to the technical field of commutators, and discloses a commutator with a positioning function, which comprises a commutator main body, and further comprises a first flexible bushing fixed on the inner wall of the commutator main body, and a second flexible bushing fixed on the inner wall of the commutator main body, the positioning mechanism is fixed at the tail end of the commutator main body, and the positioning mechanism comprises a positioning flange and a positioning sleeve which is fixed on the positioning flange and coincides with the axial lead of the positioning flange; the multiple arc-shaped elastic pieces are fixed to the positioning sleeve at equal intervals in the circumferential direction; the second flexible lining is fixed on the inner wall of the arc-shaped elastic sheet; through the arrangement of the first flexible bushing and the positioning mechanism, the commutator main body can be reliably positioned during installation, the installation stability of the commutator main body is improved, the position deviation caused by processing precision or too long operation time is eliminated, and the axial lead of the commutator main body and the axial lead of the motor armature are always kept consistent.

Description

Technical Field

[0001] The present application relates to the technical field of commutators, and in particular to a commutator with a positioning function. Background Art

[0002] The commutator, also known as the "rectifier", is an important component on the armature of a DC motor and an AC commutator motor. It is composed of many copper sheets separated by mica sheets in a cylindrical or disc shape. Each copper sheet is connected to several armature winding elements. When the armature rotates, the copper sheets contact the fixed brushes one after another. In a DC motor, the AC power in the armature winding is converted into DC power between the brushes through the brushes and the commutator. In an AC commutator motor, the frequency of the AC power between the brushes is made to meet the working requirements.

[0003] In the prior art, the commutator is usually directly fixed on the motor armature and connected to the armature winding elements, and rotates with the rotation of the motor armature winding. However, the commutator lacks the necessary installation and positioning accessories. Due to the processing accuracy or long running time, it is difficult to ensure that the axis line of the commutator is always consistent with the axis line of the motor armature. This causes the commutator to rotate eccentrically when the motor armature rotates, posing a high safety hazard.

[0004] In order to solve the above problems, the present application proposes a commutator with a positioning function. Utility Model Content

[0005] In order to solve the problem that it is difficult to ensure that the axis center line of the commutator is always consistent with the axis center line of the motor armature, the present application provides a commutator with a positioning function.

[0006] The present application provides a commutator with a positioning function using the following technical solution:

[0007] A commutator with a positioning function, comprising a commutator body, and further comprising:

[0008] a first flexible bushing fixed to an inner wall of the commutator body;

[0009] A positioning mechanism, the positioning mechanism is fixed at the rear end of the commutator body, and the positioning mechanism includes a positioning flange and a positioning sleeve fixed on the positioning flange and coincident with the axis of the positioning flange;

[0010] Arc-shaped elastic sheets, a plurality of which are fixed on the positioning sleeve at equal intervals along the circumferential direction;

[0011] A second flexible bushing is fixed to the inner wall of the arc-shaped elastic sheet.

[0012] Preferably, it also includes:

[0013] A plurality of first anti-skid convex strips are fixed on the inner wall of the first flexible bushing at equal intervals along the circumferential direction, and the length direction of the first anti-skid convex strips is parallel to the axis of the first flexible bushing.

[0014] Preferably, it also includes:

[0015] A plurality of second anti-slip convex strips are fixed on the inner wall of the second flexible bushing at equal intervals along a horizontal direction.

[0016] Preferably, a locking mechanism is further included, and the arc-shaped elastic sheet is locked on the motor armature by the locking mechanism.

[0017] Preferably, the locking mechanism comprises:

[0018] A steel ring, wherein the steel ring is bent into a circular ring structure, and fixing blocks are fixed at both ends of the steel ring;

[0019] an adjusting bolt, wherein the adjusting bolt passes through the fixing block;

[0020] A locking nut is installed on the protruding end of the adjusting bolt by threaded engagement.

[0021] Preferably, it also includes:

[0022] Positioning convex strips, two of the positioning convex strips are fixed at intervals on the outer wall of the arc-shaped elastic sheet, and the steel ring is located on the inner side of the two positioning convex strips.

[0023] Preferably, it also includes:

[0024] A locking bolt is provided with a mounting hole on the positioning flange and a threaded hole on the end surface of the commutator body. The locking bolt penetrates the mounting hole and is screwed into the threaded hole by threaded engagement.

[0025] In summary, this application includes the following beneficial technical effects:

[0026] 1. Through the first flexible bushing and positioning mechanism, the installation of the commutator body can be reliably positioned, the stability of the installation of the commutator body can be improved, the position deviation caused by the processing accuracy or the long running time can be eliminated, and the axis center line of the commutator body and the axis center line of the motor armature can be ensured to be always consistent;

[0027] 2. The arc-shaped elastic sheet is locked on the motor armature through the provided locking mechanism, so as to further improve the stability of the installation of the commutator body, eliminate the delay, and ensure the synchronous rotation of the commutator body and the motor armature.

[0028] Other additional advantages and beneficial effects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0030] Figure 2 It is a schematic diagram of the axonometric structure of the utility model;

[0031] Figure 3 It is a schematic diagram of the axonometric structure of the locking mechanism in the utility model.

[0032] Explanation of the accompanying drawings: 1. Commutator body; 11. Threaded hole; 2. First flexible bushing; 21. First anti-slip ridge; 3. Positioning mechanism; 31. Positioning flange; 311. Mounting hole; 32. Positioning sleeve; 33. Arc-shaped elastic sheet; 331. Positioning ridge; 34. Second flexible bushing; 341. Second anti-slip ridge; 4. Locking mechanism; 41. Steel ring; 42. Fixing block; 43. Adjusting bolt; 44. Locking nut; 5. Locking bolt. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0034] The embodiment of the present application discloses a commutator with a positioning function. Figure 1-Figure 3 A commutator with a positioning function includes a commutator body 1, and also includes: a first flexible bushing 2, a positioning mechanism 3, an arc-shaped elastic sheet 33 and a second flexible bushing 34.

[0035] Specifically, by Figure 1 and Figure 2As shown, the first flexible bushing 2 is fixed to the inner wall of the commutator body 1, the positioning mechanism 3 is fixed to the tail end of the commutator body 1, and the positioning mechanism 3 includes a positioning flange 31 and a positioning sleeve 32 fixed on the positioning flange 31 and coincident with the axis of the positioning flange 31, a plurality of arc-shaped elastic sheets 33 are fixed on the positioning sleeve 32 at equal intervals along the circumferential direction, and the second flexible bushing 34 is fixed to the inner wall of the arc-shaped elastic sheet 33. Therefore, when in use, after the commutator body 1 is connected to the motor armature, the positioning flange 3 1 is fixed at the tail end of the commutator body 1. At this time, the first flexible bushing 2 will fit closely to the outer wall of the motor armature. Under the action of the arc-shaped elastic sheet 33, the second flexible bushing 34 will also fit closely to the outer wall of the motor armature. The elastic force of the arc-shaped elastic sheet 33 can correct the position of the commutator body 1, improve the installation stability of the commutator body 1, eliminate the position deviation caused by machining accuracy or long running time, and ensure that the axis center line of the commutator body 1 is always consistent with the axis center line of the motor armature.

[0036] It should be noted that the first flexible bushing 2 and the second flexible bushing 34 can be made of flexible materials such as rubber and silicone, preferably silicone material, because silicone has excellent high temperature resistance and flexibility. In addition, silicone also has good chemical corrosion resistance and can be used for a long time in corrosive environments such as acids and alkalis.

[0037] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, it also includes: a first anti-slip ridge 21, a plurality of first anti-slip ridges 21 are fixed on the inner wall of the first flexible bushing 2 at equal intervals along the circumferential direction, and the length direction of the first anti-slip ridge 21 is parallel to the axial center line of the first flexible bushing 2. By setting the first anti-slip ridge 21, the relative rotation between the commutator body 1 and the motor armature can be resisted, thereby improving the stability of the commutator body 1.

[0038] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, it also includes: a second anti-slip ridge 341, a plurality of second anti-slip ridges 341 are fixed on the inner wall of the second flexible bushing 34 at equal intervals in the horizontal direction, and the second anti-slip ridges 341 have similar functions to the aforementioned first anti-slip ridges 21, except that the second anti-slip ridges 341 and the first anti-slip ridges 21 have different extension directions. By setting the second anti-slip ridges 341, the relative sliding of the commutator body 1 and the motor armature along the axial centerline can be resisted, thereby further improving the stability of the commutator body 1.

[0039] Preferably, by Figure 1 and Figure 3 As shown, in this embodiment, a locking mechanism 4 is further included, and the arc-shaped elastic piece 33 is locked on the motor armature by the locking mechanism 4.

[0040] Specifically, the locking mechanism 4 includes: a steel ring 41, an adjusting bolt 43 and a locking nut 44. The steel ring 41 is bent into a circular ring structure, and fixed blocks 42 are fixed at both ends of the steel ring 41. The adjusting bolt 43 passes through the fixed block 42, and the locking nut 44 is installed on the protruding end of the adjusting bolt 43 by threaded engagement. Therefore, after the positioning mechanism 3 is fixed to the tail end of the commutator body 1, the steel ring 41 is sleeved on the arc-shaped elastic sheet 33, and then the locking nut 44 is tightened to make the two fixed blocks 42 close to each other, which is used to reduce the diameter of the steel ring 41 and tighten the arc-shaped elastic sheet 33 so that the arc-shaped elastic sheet 33 clamps the motor armature, thereby further improving the stability of the commutator body 1.

[0041] Preferably, by Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, it also includes; positioning ridges 331, two positioning ridges 331 are fixed at intervals on the outer wall of the arc-shaped elastic sheet 33, and the steel ring 41 is located on the inner side of the two positioning ridges 331, which is used to limit the position of the steel ring 41 to prevent the steel ring 41 from sliding.

[0042] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, it also includes: a locking bolt 5, a mounting hole 311 is opened on the positioning flange 31, and a threaded hole 11 is opened on the end face of the commutator body 1. The locking bolt 5 passes through the mounting hole 311 and is screwed into the threaded hole 11 by threaded engagement. The positioning flange 31 is fixed to the rear end of the commutator body 1 by the locking bolt 5, and the installation is convenient and stable. It should be noted that the positioning flange 31 is not limited to being fixed by the locking bolt 5. In actual use, other available installation methods can also be selected, such as a retaining spring. However, as a preferred embodiment, the locking bolt 5 has the advantage of being easy to assemble and disassemble.

[0043] The implementation principle of a commutator with a positioning function in the embodiment of the present application is as follows: the commutator body 1 of the utility model is sleeved on the motor armature for assembly when in use, and then the positioning flange 31 is fixed to the tail end of the commutator body 1 by a locking bolt 5. At this time, the first flexible bushing 2 will fit tightly against the outer wall of the motor armature, and under the action of the arc-shaped elastic sheet 33, the second flexible bushing 34 will also fit tightly against the outer wall of the motor armature, and the elastic force of the arc-shaped elastic sheet 33 can correct the position of the commutator body 1, improve the installation stability of the commutator body 1, eliminate the position deviation caused by machining accuracy or long running time, and ensure that the axis center line of the commutator body 1 is always consistent with the axis center line of the motor armature;

[0044] Finally, the steel ring 41 is sleeved on the arc-shaped elastic sheet 33, and the locking nut 44 is tightened to bring the two fixing blocks 42 closer to each other, so as to reduce the diameter of the steel ring 41, tighten the arc-shaped elastic sheet 33, and clamp the motor armature, thereby further improving the stability of the commutator body 1.

[0045] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0046] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0047] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A commutator with a positioning function, comprising a commutator body (1), characterized in that: Also includes: A first flexible bushing (2), wherein the first flexible bushing (2) is fixed to the inner wall of the commutator body (1); A positioning mechanism (3), the positioning mechanism (3) being fixed at the rear end of the commutator body (1), and the positioning mechanism (3) comprising a positioning flange (31) and a positioning sleeve (32) fixed on the positioning flange (31) and coinciding with the axis of the positioning flange (31); Arc-shaped elastic sheets (33), a plurality of the arc-shaped elastic sheets (33) being fixed on the positioning sleeve (32) at equal intervals along the circumferential direction; A second flexible bushing (34), wherein the second flexible bushing (34) is fixed on the inner wall of the arc-shaped elastic sheet (33).

2. A commutator with positioning function according to claim 1, characterized in that: Also includes: A first anti-slip convex strip (21), wherein a plurality of the first anti-slip convex strips (21) are fixed to the inner wall of the first flexible bushing (2) at equal intervals along the circumferential direction, and the length direction of the first anti-slip convex strip (21) is parallel to the axis of the first flexible bushing (2).

3. The commutator with positioning function according to claim 1, characterized in that: Also includes: Second anti-slip convex strips (341), a plurality of the second anti-slip convex strips (341) are fixed on the inner wall of the second flexible bushing (34) at equal intervals in the horizontal direction.

4. The commutator with positioning function according to claim 1, characterized in that: It also comprises a locking mechanism (4), and the arc-shaped elastic piece (33) is locked on the motor armature by means of the locking mechanism (4).

5. The commutator with positioning function according to claim 4, characterized in that: The locking mechanism (4) comprises: A steel ring (41), wherein the steel ring (41) is bent into a circular ring structure, and fixing blocks (42) are fixed at both ends of the steel ring (41); an adjusting bolt (43), wherein the adjusting bolt (43) passes through the fixing block (42); A locking nut (44) is installed on the protruding end of the adjusting bolt (43) by means of threaded engagement.

6. A commutator with positioning function according to claim 5, characterized in that: Also includes; Positioning convex strips (331), two of the positioning convex strips (331) are fixed at intervals on the outer wall of the arc-shaped elastic sheet (33), and the steel ring (41) is located on the inner sides of the two positioning convex strips (331).

7. The commutator with positioning function according to claim 1, characterized in that: Also includes: A locking bolt (5) is provided with a mounting hole (311) on the positioning flange (31), and a threaded hole (11) is provided on the end surface of the commutator body (1). The locking bolt (5) passes through the mounting hole (311) and is screwed into the threaded hole (11) by means of a threaded screwing.

Images