Via hole slip ring with stable connection

Abstract

The utility model discloses a via hole slip ring with stable connection, the via hole slip ring with stable connection comprises a stator, and a rotor and a fixed ring which are pivotally arranged in the stator, the fixed ring is in threaded connection with the rotor, the inner wall of the fixed ring is provided with a shallow-to-deep guide groove, two sides of the rotor are provided with telescopic movable blocks, and the movable blocks are connected with the stator. One end of the movable block is provided with a first abutting part, the other end of the movable block is provided with a second abutting part, the second abutting part abuts against the deepest position of the guide groove, and when the fixing ring is rotated, the first abutting part moves towards the axis direction of the rotor. The first abutting part can be synchronously pushed to be tightly attached to the rotating shaft of the equipment only by rotating the fixing ring, the friction force between the first abutting part and the rotating shaft is increased due to the fact that the first abutting part is arc-shaped, the fixing ring is in threaded connection with the rotor, stable supporting force is provided for the movable block, and stable connection between the rotating shaft and the rotor is guaranteed; and the product has the advantages of stable connection and quick installation.

Description

Technical Field

[0001] The utility model relates to the technical field of slip rings, in particular to a through-hole slip ring with stable connection. Background Art

[0002] Through-hole slip ring is a general term for a series of conductive slip rings with a hole in the center. It is mainly used to transmit precision signals, weak current, large current, and high voltage. It has the main characteristics of low torque, low loss and maintenance-free, low electrical noise, and ultra-long life. Through-hole slip ring is also called hollow shaft slip ring.

[0003] The through-hole slip ring consists of a stator and a rotor. The rotor is usually mounted on the rotating shaft of the equipment and finally connected and fixed to the rotating shaft by fasteners on the rotor. This fixing method is time-consuming and cumbersome. Therefore, the applicant has made a useful design and found a solution to the above problem. The technical solution to be introduced below was produced in this context. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned traditional through-hole slip ring design and provide a product with stable connection and quick installation.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] A through-hole slip ring with a stable connection includes a stator, a rotor pivotally arranged in the stator, and a fixed ring. The fixed ring is threadedly connected to the rotor. The inner wall of the fixed ring is provided with a guide groove from shallow to deep. Retractable movable blocks are provided on both sides of the rotor. One end of the movable block is provided with a first interference portion, and the other end of the movable block is provided with a second interference portion. The second interference portion abuts the deepest part of the guide groove. When the fixed ring is rotated, the first interference portion moves toward the axial center direction of the rotor.

[0007] Preferably, the rotor is provided with a sliding groove for the movable block to move, the sliding groove is provided with a yield groove for accommodating the first interference portion, and the rotor is provided with an extension portion.

[0008] Preferably, inclined blocks are provided on both sides of the movable block and abut against the side walls of the sliding groove.

[0009] Preferably, pushing parts are provided on both sides of the fixing ring.

[0010] Preferably, the first and second contact portions are arc-shaped, and inclined surfaces are provided at the entrances at both ends of the first contact portion.

[0011] Preferably, the guide groove is shaped as a semi-arc.

[0012] Beneficial effects:

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model only needs to rotate the fixing ring to synchronously push the movable block toward the axis of the rotor. The first contact portion is tightly attached to the rotating shaft of the equipment, thereby increasing the contact area between the first contact portion and the rotating shaft and increasing the friction force. Moreover, since the fixing ring is threadedly connected to the rotor, the fixing ring can provide a stable supporting force for the movable block after rotation, ensuring a stable connection between the rotating shaft and the rotor, so that the product has the advantages of stable connection and quick installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a through-hole slip ring with stable connection according to the utility model;

[0016] Figure 2 This is a schematic diagram of the side cross-sectional structure of a through-hole slip ring with stable connection according to the present invention;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged view of a through-hole slip ring with stable connection;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of a through-hole slip ring with stable connection according to the present invention;

[0019] Figure 5 For this utility model Figure 4 A partial enlarged view of a through-hole slip ring with stable connection B;

[0020] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0021] Figure numerals: 1, stator; 2, rotor; 3, fixed ring; 4, movable block; 21, slide groove; 22, give way groove; 23, extension part; 31, guide groove; 32, pushing part; 41, first interference part; 42, second interference part; 43, inclined block; 411, inclined surface. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" 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, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] In the embodiments of the present invention, "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0025] Reference example Figures 1 to 5 A through-hole slip ring with stable connection includes a stator 1, a rotor 2 pivotally arranged in the stator 1, and a fixed ring 3. The fixed ring 3 is threadedly connected to the rotor 2. The inner wall of the fixed ring 3 is provided with a guide groove 31 from shallow to deep. Retractable movable blocks 4 are provided on both sides of the rotor 2. One end of the movable block 4 is provided with a first interference portion 41, and the other end of the movable block 4 is provided with a second interference portion 42. The second interference portion 42 abuts the deepest part of the guide groove 31. When the fixed ring 3 is rotated, the first interference portion 41 moves toward the axial center direction of the rotor 2.

[0026] It is worth mentioning that the rotor 2 is provided with a chute 21 for the movable block 4 to move, and the chute 21 is provided with a clearance groove 22 for accommodating the first interference portion 41. The rotor 2 is provided with an extension portion 23. When the diameter of the rotating shaft of the device is the same as the diameter of the inner wall of the rotor 2, the first interference portion 41 will be squeezed by the rotating shaft and enter the clearance groove 22, so that the rotor 2 can be sleeved on the rotating shaft. When the fixed ring 3 rotates, in order to prevent the rotor 2 from rotating with it, it is necessary to prevent the extension portion 23 from rotating by the extension portion 23, or the extension portion 23 and the pushing portion 32 from rotating in opposite directions, thereby causing the fixed ring 3 to rotate.

[0027] It is worth mentioning that the movable block 4 is provided with inclined blocks 43 on both sides, and abuts against the side walls of the chute 21. The inclined blocks 43 increase the friction of the movable block 4 in the chute 21 to prevent the movable block 4 from falling off the chute 21 during transportation.

[0028] It is worth mentioning that a push portion 32 is provided on both sides of the fixing ring 3, and the push portion 32 is used by the user to rotate the fixing ring 3;

[0029] It is worth mentioning that the first and second contact portions 41, 42 are arc-shaped. Inclined surfaces 411 are provided at the entrances at both ends of the first contact portion 41. The arc shape of the first contact portion 41 increases the contact area with the rotating shaft and increases the friction force. The arc shape of the second contact portion 42 is used in conjunction with the guide groove 31. The inclined surfaces 411 facilitate the rotating shaft to expand the distance between the first contact portions 41 so as to accommodate the rotating shaft into the stator 1.

[0030] It is worth mentioning that the shape of the guide groove 31 is set to be semi-arc-shaped. The semi-arc-shaped guide groove 31 will gradually push the movable block 4 to move, so as to better control the moving distance of the movable block 4.

[0031] The operating principle of the present invention is now described as follows:

[0032] The stator 1 is placed on the rotating shaft. At this time, the extension part 23 should be pressed to prevent the rotor 2 from rotating. At the same time, a thrust is applied to the pushing part 32 to rotate the fixing ring 3. As the fixing ring 3 rotates, the second contact part 42 gradually moves from the deepest part of the guide groove 31 to the shallowest part of the guide groove 31. The guide groove 31 pushes the first contact part 41 to press tightly against the outer wall of the rotating shaft. Since the fixing ring 3 is threadedly connected to the rotor 2, the fixing ring 3 can provide a stable supporting force for the movable block 4 after rotation, ensuring a stable connection between the rotating shaft and the rotor 2.

[0033] The above design solution can enable the product to achieve the advantages of stable connection and quick installation.

[0034] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A through-hole slip ring with stable connection, comprising a stator (1), a rotor (2) pivotally arranged in the stator (1), and a fixed ring (3), characterized in that: The fixing ring (3) is threadedly connected to the rotor (2); the inner wall of the fixing ring (3) is provided with a guide groove (31) extending from shallow to deep; retractable movable blocks (4) are provided on both sides of the rotor (2); one end of the movable block (4) is provided with a first contact portion (41); the other end of the movable block (4) is provided with a second contact portion (42); the second contact portion (42) contacts the deepest part of the guide groove (31); when the fixing ring (3) is rotated, the first contact portion (41) moves toward the axial center direction of the rotor (2).

2. The through-hole slip ring with stable connection according to claim 1, characterized in that: The rotor (2) is provided with a sliding groove (21) for the movable block (4) to move, the sliding groove (21) is provided with a relief groove (22) for accommodating the first contact portion (41), and the rotor (2) is provided with an extension portion (23).

3. The through-hole slip ring with stable connection according to claim 2, characterized in that: Inclined blocks (43) are provided on both sides of the movable block (4) and abut against the side walls of the sliding groove (21).

4. The through-hole slip ring with stable connection according to claim 1, characterized in that: Pushing parts (32) are provided on both sides of the fixing ring (3).

5. The through-hole slip ring with stable connection according to claim 1, characterized in that: The first contact portion (41) and the second contact portion (42) are arranged in an arc shape, and inclined surfaces (411) are provided at the entrances at both ends of the first contact portion (41).

6. The through-hole slip ring with stable connection according to any one of claims 2 to 5, characterized in that: The guide groove (31) is configured to be in a semi-arc shape.

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