Ultra-light torque conductive slip ring

Abstract

The utility model relates to an ultra-light torque conductive slip ring. The fixed shaft isolation sleeve is adopted at the fixed shaft end to fix the fixed shaft, a certain sealing protection effect is achieved, meanwhile, the fixed shaft sealing ring is utilized to conduct sealing protection on the inner cavity of the shell at the fixed shaft end, and the bearing is adopted at the rotating shaft end to conduct rotating supporting on the rotating shaft. The inner cavity of the shell at one end of the rotating shaft is sealed and protected through the bearing pressing ring, the pressing cover sealing ring and the rotating shaft sealing ring, so that the sealing performance of the conductive contact part of the fixed shaft and the rotating shaft is effectively realized, external impurities and water are prevented from entering to influence the conductive effect and the use safety, and the layout and the number of the sealing rings are optimally designed; therefore, the rotating torque of the rotating shaft is smaller, and the application to small-torque conductive parts can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive slip rings, in particular to an ultra-light torque conductive slip ring. Background Art

[0002] A conductive slip ring is also called a collector ring, a slip ring, a current collector ring, a bushing, etc. It can be applied to any electromechanical system that requires continuous rotation while transmitting power and signals from a fixed position to a rotating position. The conductive slip ring can improve the system performance, simplify the system structure, and avoid the twisting of wires during rotation. In the existing conductive slip rings, in order to seal the inside, multiple layers of seals are often used to ensure the sealing performance during the rotation process. However, the use of multiple layers of sealing rings increases the friction between the sealing rings and the moving structure, resulting in an increase in the rotational torque of the conductive slip ring, thus unable to meet the low-torque conductive connection requirements. Content of the Utility Model

[0003] In view of the problems existing in the prior art, the utility model discloses an ultra-light torque conductive slip ring. The technical solution adopted is that a pressing cover is press-fitted at one end of the outer shell with interference fit. The center of the pressing cover is rotatably fitted with a rotating shaft passing through it. A fixed shaft is inserted through the other end of the outer shell. The fixed shaft and the rotating shaft are respectively conductive connection columns. An interference fit sleeve is sleeved between the fixed shaft and the outer shell to fix the fixed shaft through the interference fit sleeve and form a protective isolation between the fixed shaft and the outer shell. The end of the rotating shaft is rotatably inserted into the end of the fixed shaft and is coaxial, and the rotating shaft and the fixed shaft achieve rotational conductive contact. A fixed shaft sealing ring is installed between the inner cavity side wall of the outer shell and the circumferential wall of the end of the fixed shaft to seal and protect the inner cavity of the outer shell at one end of the fixed shaft. A pressing cover sealing ring is snap-fitted on the inner side of the pressing cover. A bearing is press-fitted on the rotating shaft. The outer ring of the bearing is press-fitted with the outer shell. A bearing pressing ring and a bearing pressing washer are slidably inserted through the rotating shaft on both sides of the bearing. One end of the bearing pressing ring presses on the pressing cover sealing ring, and the other end presses on the side of the inner ring of the bearing. One end of the bearing pressing washer presses on the end of the rotating shaft, and the other end presses on the side of the inner ring of the bearing. The bearing is pressed and limited by the bearing pressing ring and the bearing pressing washer, so that the bearing rotatably supports the rotating shaft. A rotating shaft sealing ring is installed between the inner cavity side wall of the outer shell and the circumferential wall of the end of the rotating shaft to seal and protect the inner cavity of the outer shell at one end of the rotating shaft through the bearing pressing ring, the pressing cover sealing ring and the rotating shaft sealing ring.

[0004] As a preferred embodiment of the present utility model, one end of the fixed shaft is fixedly connected with a fixed contact plate, and a plug-in slot is provided at the central position; one end of the rotating shaft is fixedly connected with a moving contact plate, and a plug connector is fixedly connected at the central position. The moving contact plate is rotationally buckled and attached to the fixed contact plate, and the plug connector is correspondingly inserted into the plug-in slot to realize the coaxial rotation of the rotating shaft at the end of the fixed shaft and conduct electrical contact.

[0005] Advantages of the present utility model: In the present utility model, a fixed shaft isolation sleeve is used to fix the fixed shaft at the end of the fixed shaft and has a certain sealing and protective effect. At the same time, a fixed shaft sealing ring is used to seal and protect the inner cavity of the housing at one end of the fixed shaft. While at the end of the rotating shaft, a bearing is used to rotatably support the rotating shaft, and the inner cavity of the housing at one end of the rotating shaft is sealed and protected by a bearing pressing ring, a pressing cover sealing ring and a rotating shaft sealing ring, effectively realizing the sealing of the electrical contact part between the fixed shaft and the rotating shaft, avoiding the entry of external impurities and moisture and affecting the electrical conductivity and use safety. The layout and quantity of the sealing rings are optimized, making the rotation torque of the rotating shaft smaller, which can meet the application in the electrical conductive part with small torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 is the overall structural schematic diagram of the present utility model;

[0007] Figure 2 is the half-sectional view of the overall structure of the present utility model;

[0008] Figure 3 is the exploded view of the overall structure of the present utility model;

[0009] Figure 4 is the structural schematic diagram of the fixed shaft and the rotating shaft of the present utility model.

[0010] In the figure: 1 housing, 2 pressing cover, 3 fixed shaft, 301 fixed contact plate, 302 plug-in slot, 4 rotating shaft, 401 moving contact plate, 402 plug connector, 5 pressing cover sealing ring, 6 bearing pressing ring, 7 bearing, 8 bearing top pressure ring, 9 rotating shaft sealing ring, 10 fixed shaft sealing ring, 11 fixed shaft isolation sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] Embodiment 1

[0012] As Figures 1 to 4As shown in the figure, a super-light torque conductive slip ring of the present utility model has a pressing cover 2 press-fitted with interference fit at one end of the housing 1. The center of the pressing cover 2 is rotatably fitted with a rotating shaft 4 passing through. The other end of the housing 1 is connected with a fixed shaft 3. The fixed shaft 3 and the rotating shaft 4 are respectively conductive connection columns. An interference fit sleeve 11 is sleeved between the fixed shaft 3 and the housing 1 to fix the fixed shaft 3 through the interference fit sleeve 11 and form a protective isolation between the fixed shaft 3 and the housing 1. One end of the fixed shaft 3 is fixedly connected with a fixed contact plate 301, and a plug-in slot 302 is opened at the center position; one end of the rotating shaft 4 is fixedly connected with a moving contact plate 401, and a plug 402 is fixedly connected at the center position. The moving contact plate 401 is rotationally buckled and attached to the fixed contact plate 301, and the plug 402 is correspondingly inserted into the plug-in slot 302 to realize the coaxial rotation of the rotating shaft 4 at the end of the fixed shaft 3 and conduct electrical contact.

[0013] A fixed shaft sealing ring 10 is installed between the inner cavity side wall of the housing 1 and the circumferential wall of the end of the fixed shaft 3 to seal and protect the inner cavity of the housing 1 at one end of the fixed shaft 3. A pressing cover sealing ring 5 is snap-fitted and installed on the inner side surface of the pressing cover 2. A bearing 7 is installed on the rotating shaft 4 with interference fit. The outer ring of the bearing 7 is installed with interference fit with the housing 1. A bearing pressing ring 6 and a bearing pressing ring 8 are slidably inserted on the rotating shaft 4 on both sides of the bearing 7. One end of the bearing pressing ring 6 presses against the pressing cover sealing ring 5, and the other end presses against the side surface of the inner ring of the bearing 7. One end of the bearing pressing ring 8 presses against the end of the rotating shaft 4, and the other end presses against the side surface of the inner ring of the bearing 7. The bearing 7 is pressed and limited by the bearing pressing ring 6 and the bearing pressing ring 8, so that the bearing 7 rotates and supports the rotating shaft 4. A rotating shaft sealing ring 9 is installed between the inner cavity side wall of the housing 1 and the circumferential wall of the end of the rotating shaft 4. The inner cavity of the housing 1 at one end of the rotating shaft 4 is sealed and protected by the bearing pressing ring 6, the pressing cover sealing ring 5 and the rotating shaft sealing ring 9.

[0014] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more than two.

[0015] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0016] The components not described in detail herein are prior art.

[0017] Although the specific embodiments of the present utility model have been described in detail above, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present utility model, and the modifications or deformations without creative labor are still within the protection scope of the present utility model.

Claims

1. An ultra-light torque conductive slip ring, characterized in that: The invention comprises a shell (1), one end of the shell (1) is covered with a pressing cover (2) by interference fit, the center of the pressing cover (2) is rotatably fitted through a rotating shaft (4), the other end of the shell (1) is connected with a fixed shaft (3), a fixed shaft isolation sleeve (11) is sleeved between the fixed shaft (3) and the shell (1) by interference fit, the end of the rotating shaft (4) is rotatably inserted into the end of the fixed shaft (3) and is coaxial, a fixed shaft sealing ring (10) is installed between the inner cavity side wall of the shell (1) and the circumferential wall of the end of the fixed shaft (3), a pressing cover sealing ring (5) is snap-fitted on the inner side of the pressing cover (2), and the rotating shaft (4) is provided with a fixed shaft (3) and a fixed shaft (3) seal ring (10) is installed between the inner cavity side wall of the shell (1) and the circumferential wall of the end of the fixed shaft (3), a pressing cover sealing ring (5) is snap-fitted on the inner side surface of the pressing cover (2), and a fixed shaft (3) is provided on the rotating shaft (4). A bearing (7) is installed with an interference fit, and the outer ring of the bearing (7) is installed with an interference fit with the housing (1). A bearing clamping ring (6) and a bearing pressing ring (8) are slidably connected on both sides of the bearing (7) on the rotating shaft (4). One end of the bearing clamping ring (6) presses on the clamping cover sealing ring (5), and the other end presses on the side surface of the inner ring of the bearing (7). One end of the bearing pressing ring (8) presses on the end of the rotating shaft (4), and the other end presses on the side surface of the inner ring of the bearing (7). A rotating shaft sealing ring (9) is installed between the inner cavity side wall of the housing (1) and the circumferential wall of the end of the rotating shaft (4).

2. According to claim 1, the ultra-light torque conductive slip ring is characterized in that: One end of the fixed shaft (3) is fixedly connected to a fixed contact plate (301), and a plug-in slot (302) is provided at the center.

3. The ultra-light torque conductive slip ring according to claim 2, characterized in that: A movable contact plate (401) is fixedly connected to one end of the rotating shaft (4), and a plug connector (402) is fixedly connected to the center position; the movable contact plate (401) is rotated and snap-fitted onto the fixed contact plate (301), and the plug connector (402) is correspondingly plugged into the plug slot (302).

Images