Commutator

Abstract

The utility model relates to the technical field of commutators, and discloses a commutator, which comprises a commutator main body, the front surface of the commutator main body is provided with a plurality of chutes which are arranged in a circumferential manner and are arranged at equal intervals, the cross section of each chute is T-shaped, and the interior of each chute is provided with a commutator segment. According to the commutator, the sliding grooves are T-shaped and are matched with the I-shaped commutator segments, so that sliding connection between the commutator segments and the sliding grooves can be realized, the installation speed is improved, the commutator segments can be limited in the radial direction away from the commutator main body, and the phenomenon of commutator segment flying is effectively reduced; meanwhile, when the commutator segments are connected with the sliding grooves in a sliding mode, telescopic rods in the two limiting assemblies can be extruded through extrusion pieces to give way, springs are compressed, when the telescopic rods reach the fixing grooves, the telescopic rods can reset under the reset of the springs, the telescopic rods enter the fixing grooves, the purpose of fixing the commutator segments is achieved, and the service life of the commutator segments is prolonged. And the commutator segments can be prevented from axially moving along the commutator main body.

Description

Technical Field

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

[0002] For DC motors, the commutator changes the direction of rotation of the motor. It is a key component for the motor to achieve forward and reverse rotation. Through the equipped contacts, the motor can be reversed, thereby changing the direction and speed of the torque output by the motor. At the same time, the commutator can also ensure that the direction of the electromagnetic torque remains unchanged, allowing the motor to rotate continuously and stably.

[0003] The existing patent (announcement number: CN219554125U) discloses a slot-type commutator, including a commutator body, a commutator segment and a through slot. The commutator segment is arranged on the outside of the commutator body, the through slot is opened inside the commutator body, the through slot is arranged inside the reinforcing structure, the commutator segment is arranged inside the fixing structure, the fixing structure includes a fixing bolt, a through hole and a fixing slot, the through hole is opened inside the commutator segment, the fixing slot is opened inside the commutator body, the through hole at one end of the fixing bolt is inserted into the inside of the fixing slot, and the outside of the fixing bolt is provided with an external thread. The utility model is provided with a fixing structure, in order to prevent the commutator segment from flying during use, so through the coordinated use of the fixing bolt, the through hole and the fixing slot, the commutator segment can be fixed, so that the commutator segment is more stable when rotating, and because the material of the fixing bolt is the same as that of the commutator segment, it does not affect the use of the commutator segment, thereby improving the fixing effect.

[0004] When the above-mentioned commutator is in use, the commutator segments can be fixed by the coordinated use of the fixing bolt, the through hole and the fixing groove, so that the commutator segments are more stable during rotation. Since the material of the fixing bolt is the same as that of the commutator segments, it does not affect the use of the commutator segments, thereby improving the fixing effect. However, through the threaded connection of the fixing bolt, when the motor is working, it will vibrate itself, which can easily cause the fixing bolt to loosen, thereby reducing the fixing effect. At the same time, the fixing through the fixing bolt is more cumbersome during installation, and it is difficult to control the tightening force of the bolt, which can easily cause damage to the commutator segments. Utility Model Content

[0005] In response to the shortcomings of the prior art, the present application provides a commutator having the advantages of easy installation and good fixing effect. It solves the problem that the motor itself vibrates during operation, which easily causes the fixing bolt to loosen, thereby reducing the fixing effect. At the same time, the fixing through the fixing bolt is more cumbersome during installation, and it is difficult to control the tightening force of the bolt, which easily causes damage to the commutator segment.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a commutator, comprising a commutator body, a front surface of the commutator body is provided with a plurality of circumferentially arranged and equidistant slide grooves, and the cross section of each of the slide grooves is T-shaped, a commutator segment is provided inside each of the slide grooves, and the cross section of each of the commutator segments is set to be I-shaped, and a through-limiting groove is provided on a side surface of the middle end of each of the commutator segments;

[0007] Both sides of the middle end of each slide slot are provided with outwardly extending fixing slots, and the inner side wall of each fixing slot is installed with a limiting component;

[0008] Each of the limiting components comprises a sleeve, a telescopic rod and a spring.

[0009] Through the above scheme, by setting the slide groove to a T shape, combined with the I-shape of the commutator segment, the sliding connection between the commutator segment and the slide groove can be achieved, the installation speed can be improved, and at the same time, the commutator segment can be limited in the radial direction away from the commutator body, effectively reducing the flying phenomenon of the commutator segment. At the same time, when the commutator segment and the slide groove are slidably connected, the extrusion sheet can be used to squeeze the telescopic rods in the two limiting components to make way and compress the spring. When the telescopic rod reaches the fixed groove, the telescopic rod can be reset under the reset of the spring, so that the telescopic rod enters the fixed groove, thereby achieving the purpose of fixing the commutator segment and preventing the commutator segment from moving axially along the commutator body.

[0010] Furthermore, each of the telescopic rods is slidably plugged into a sleeve adjacent thereto, and both ends of each of the springs are fixedly connected to the telescopic rod adjacent thereto and to the inner wall of the sleeve, respectively.

[0011] Through the above solution and the provision of the spring, the purpose of automatic resetting of the telescopic rod can be achieved.

[0012] Furthermore, one end of each telescopic rod away from the sleeve is rounded.

[0013] Through the above solution, the rounded corner setting of the telescopic rod can play a guiding role when entering the fixing groove, thereby facilitating the entry of the telescopic rod.

[0014] Furthermore, each of the commutator segments is slidably connected to a sliding groove adjacent thereto.

[0015] Through the above solution, the lateral movement of the commutator segment can be limited by the sliding connection between the commutator segment and the slide groove.

[0016] Furthermore, the edges of the front and rear ends of the two inner side walls of each commutator segment are rounded, and the front and rear ends of each commutator segment are fixedly connected with an extrusion sheet.

[0017] Through the above solution, by setting the squeezing sheet, it is possible to achieve the purpose that when the reversing sheet is slidably connected with the sliding groove, the squeezing sheet can squeeze the two telescopic rods away from each other.

[0018] Furthermore, each of the telescopic rods is plugged into a limiting groove adjacent to it, and a width of each of the limiting grooves is equal to a diameter of the telescopic rod adjacent to it.

[0019] Through the above solution, the longitudinal movement of the commutator segment can be limited by the cooperation of the telescopic rod and the limiting groove.

[0020] Furthermore, each of the commutator segments is fixedly connected to an inner wall away from the commutator body with four reinforcing ribs.

[0021] Through the above solution, by providing reinforcing ribs, the side away from the commutator body can be supported to improve its overall strength.

[0022] Furthermore, each of the commutator segments has the same length as the commutator body.

[0023] Through the above solution, by making the commutator segments and the commutator body have the same length, it can be ensured that the center of gravity of the commutator is stable during rotation, thereby ensuring the smoothness of rotation.

[0024] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0025] The commutator is configured such that the slide groove is set in a T-shape, which cooperates with the I-shape of the commutator segment, so that the commutator segment and the slide groove can be slidably connected, thereby improving the installation speed and limiting the radial direction of the commutator segment away from the commutator body, effectively reducing the flying phenomenon of the commutator segment. At the same time, when the commutator segment and the slide groove are slidably connected, the extrusion sheet can squeeze the telescopic rods in the two limiting components to make way and compress the spring. When the telescopic rod reaches the fixed groove, the telescopic rod can be reset under the reset of the spring, so that the telescopic rod enters the fixed groove, thereby achieving the purpose of fixing the commutator segment and preventing the commutator segment from moving axially along the commutator body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the overall structure of this application;

[0027] Figure 2 For this application Figure 1 A schematic diagram of the structure enlargement in the middle;

[0028] Figure 3 This is the front view of the overall structure of this application;

[0029] Figure 4 This is a schematic diagram of the structure of the limit assembly of this application;

[0030] Figure 5 This is a schematic diagram of the commutator segment structure of this application.

[0031] In the figure:

[0032] 1. Commutator body; 2. Slide groove; 3. Commutator segment; 4. Limiting groove; 5. Fixing groove; 6. Limiting assembly; 601. Sleeve; 602. Telescopic rod; 603. Spring; 10. Extrusion sheet; 11. Reinforcing rib. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] See also Figure 1 , Figure 3 and Figure 5 A commutator in this embodiment includes a commutator body 1, a front side of the commutator body 1 is provided with a plurality of circumferentially arranged and equidistant slide grooves 2, and the cross section of each slide groove 2 is T-shaped, a commutator segment 3 is provided inside each slide groove 2, and the cross section of each commutator segment 3 is set to be I-shaped, and a penetrating limiting groove 4 is provided on a side surface of the middle end of each commutator segment 3.

[0035] See also Figure 1 and Figure 4 Both sides of the middle end of each slide groove 2 are provided with outwardly extending fixed grooves 5, and the inner wall of each fixed groove 5 is installed with a limiting component 6. The end of each telescopic rod 602 away from the sleeve 601 is rounded. The rounded corner setting of the telescopic rod 602 can play a guiding role when entering the fixed groove 5, which facilitates the entry of the telescopic rod 602.

[0036] See also Figure 1 , Figure 2 and Figure 3Each commutator segment 3 is slidably connected to the slide groove 2 adjacent to it. Through the sliding connection between the commutator segment 3 and the slide groove 2, the neck movement of the commutator segment 3 can be limited. The edges of the front and rear ends of the two inner side walls of each commutator segment 3 are rounded. The front and rear ends of each commutator segment 3 are fixedly connected with an extrusion sheet 10. Through the setting of the extrusion sheet 10, when the commutator segment 3 is slidably connected to the slide groove 2, the extrusion sheet 10 can squeeze the two telescopic rods 602 away from each other. Each telescopic rod 602 is plugged into the limiting groove 4 adjacent to it. The width of each limiting groove 4 is equal to the diameter of the telescopic rod 602 adjacent to it. Through the cooperation of the telescopic rod 602 and the limiting groove 4, the longitudinal movement of the commutator segment 3 can be limited.

[0037] See also Figure 1 , Figure 2 and Figure 5 Each commutator segment 3 is fixedly connected to the inner wall away from the commutator body 1 with four reinforcing ribs 11. By setting the reinforcing ribs 11, the side away from the commutator body 1 can be supported to improve its overall strength. Each commutator segment 3 is the same length as the commutator body 1. By making the commutator segment 3 and the commutator body 1 the same length, it can be ensured that the center of gravity of the commutator is stable during rotation, thereby ensuring the smoothness of rotation. Each limit assembly 6 includes a sleeve 601, a telescopic rod 602 and a spring 603. Each telescopic rod 602 is slidably plugged into the sleeve 601 adjacent to it. The two ends of each spring 603 are respectively fixedly connected to the telescopic rod 602 adjacent to it and the inner wall of the sleeve 601. By setting the spring 603, the purpose of automatic resetting of the telescopic rod 602 can be achieved.

[0038] A commutator in the present embodiment, by setting the slide groove 2 to be T-shaped, combined with the I-shape of the commutator segment 3, can realize the sliding connection between the commutator segment 3 and the slide groove 2, improve the installation speed, and at the same time, can limit the commutator segment 3 in the radial direction away from the commutator body 1, effectively reducing the flying phenomenon of the commutator segment 3. At the same time, when the commutator segment 3 is slidably connected with the slide groove 2, the telescopic rod 602 in the two limiting components 6 can be squeezed out of place by the squeezing sheet 10, and the spring 603 can be compressed. When the telescopic rod 602 reaches the fixed groove 5, the telescopic rod 602 can be reset under the reset of the spring 603, so that the telescopic rod 602 enters the fixed groove 5, thereby achieving the purpose of fixing the commutator segment 3 and preventing the commutator segment 3 from moving axially along the commutator body 1.

[0039] The working principle of the above embodiment is as follows: when in use, by slidingly connecting the commutator segment 3 with the slide groove 2, when the extrusion sheet 10 of the commutator segment 3 contacts the two telescopic rods 602, the two telescopic rods 602 can be squeezed away from each other by the extrusion sheet 10, and at the same time, with the rounded corner setting at one end of the commutator segment 3, the telescopic rod 602 can enter the interior of the sleeve 601. When the telescopic rod 602 reaches the fixed groove 5 provided in the commutator segment 3, the spring 603 loses pressure, thereby driving the telescopic rod 602 to reset, so that the telescopic rod 602 enters the interior of the fixed groove 5, thereby achieving the purpose of quick installation of the commutator segment 3.

[0040] It should be noted 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A commutator, comprising a commutator body (1), characterized in that: The front side of the commutator body (1) is provided with a plurality of slide grooves (2) arranged in a circumferential manner and at equal distances, and the cross section of each of the slide grooves (2) is in the shape of a T, a commutator segment (3) is provided inside each of the slide grooves (2), and the cross section of each of the commutator segments (3) is in the shape of an I, and a through-going limiting groove (4) is provided on a side surface of a middle end of each of the commutator segments (3); Both sides of the middle end of each of the slide grooves (2) are provided with outwardly extending fixing grooves (5), and the inner side wall of each of the fixing grooves (5) is installed with a limiting component (6); Each of the position limiting components (6) comprises a sleeve (601), a telescopic rod (602) and a spring (603).

2. A commutator according to claim 1, characterized in that: Each telescopic rod (602) is slidably plugged into a sleeve (601) adjacent thereto, and two ends of each spring (603) are respectively fixedly connected to the telescopic rod (602) adjacent thereto and to the inner wall of the sleeve (601).

3. A commutator according to claim 1, characterized in that: One end of each telescopic rod (602) away from the sleeve (601) is rounded.

4. A commutator according to claim 1, characterized in that: Each of the commutator segments (3) is slidably connected to a slide groove (2) adjacent thereto.

5. A commutator according to claim 1, characterized in that: The edges of the front and rear ends of the two inner side walls of each commutator segment (3) are rounded, and the front and rear ends of each commutator segment (3) are fixedly connected to an extrusion sheet (10).

6. A commutator according to claim 1, characterized in that: Each telescopic rod (602) is plugged into a limiting groove (4) adjacent to it, and the width of each limiting groove (4) is equal to the diameter of the telescopic rod (602) adjacent to it.

7. A commutator according to claim 1, characterized in that: The inner wall of each commutator segment (3) away from the commutator body (1) is fixedly connected with four reinforcing ribs (11).

8. A commutator according to claim 1, characterized in that: Each of the commutator segments (3) has the same length as the commutator body (1).

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