Rotary coupler convenient to disassemble and assemble

Abstract

The utility model discloses a rotary coupler convenient to disassemble and assemble, which comprises a shell and a rotor shaft, the rotor shaft is arranged in the shell, two stator assemblies are arranged on the shell, two rotor assemblies are arranged on the rotor shaft, the rotor assemblies and the stator assemblies are arranged in a one-to-one correspondence manner, and the stator assemblies are arranged in the shell. One stator assembly and one rotor assembly form a coupling structure; an isolation structure is arranged between the two coupling structures; and one end of the shell is open. The device has the advantages that the device can be directly fixed after the shell is matched with bolts, compared with an existing welding installation mode, installation and disassembly operation is convenient and fast, lossless disassembly can be achieved, and the use cost is reduced; through the mode that the sealing cover and the shell are sealed in a matched mode, the sealing cover is convenient to disassemble, after the sealing cover is disassembled, internal components of the shell can be conveniently taken out for overhaul, and the overhaul efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire pressure monitoring, in particular to a rotary coupler which is convenient for disassembly and assembly. Background Art

[0002] The rotary coupler is a non-contact signal transmission or energy transmission device, which can achieve 1:1 signal or energy transmission by using the transformer principle. The rotary coupler adopts the transformer principle, and the primary coil and the secondary coil realize non-contact signal or energy transmission through electromagnetic coupling. The primary magnetic cylinder and the secondary magnetic cylinder of the product are separated from each other and maintain a certain gap to meet the requirements of relative rotational motion. The coils are wound on the primary and secondary magnetic cylinders, and the electromagnetic induction principle is used to realize the transmission of electrical signals and electrical energy between the high-speed rotating components and the stationary components under non-contact conditions. It is essentially equivalent to a transformer. When the alternating voltage U1 is applied to both ends of the primary coil, an induced voltage U2 will be generated at both ends of the secondary coil. When U1 is determined, the size of U2 can be controlled by controlling the number of coil turns. When working, the rotor coil rotates at high speed and has no contact with the stator coil, so that the transmission of electrical signals and electrical energy under specific conditions can be met. The rotary coupler is mainly used in tire pressure monitoring systems, which can power tire pressure sensors and transmit tire pressure sensor signals. It is widely used in wheels or tires.

[0003] In the tire pressure monitoring system on the aircraft, since the housing of the rotary coupler is installed by welding and is not convenient to disassemble, there are certain inconveniences during maintenance and inspection. When the coupler fails, it can only be directly replaced, which has a high cost. Utility Model Content

[0004] The purpose of the present invention is to provide a rotary coupler that is easy to disassemble and assemble in order to solve the above-mentioned problem. The preferred technical solution among the many technical solutions provided by the present invention has the following technical effects: easy installation and disassembly, convenient maintenance, low cost of use, etc., as described below for details.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a rotary coupler that is convenient for disassembly and assembly, comprising a housing and a rotor shaft, wherein the rotor shaft is arranged inside the housing, two stator assemblies are arranged on the housing, and two rotor assemblies are arranged on the rotor shaft, wherein the rotor assemblies are arranged in a one-to-one correspondence with the stator assemblies, and one stator assembly and one rotor assembly form a coupling structure;

[0007] An isolation structure is provided between the two coupling structures;

[0008] One end of the shell is open, the rotor shaft is inserted through the open end of the shell and then passes through the middle of the other end, and a sealing cover is provided at the open end of the shell;

[0009] The end of the shell is provided with a plurality of threaded holes;

[0010] The shell surface is provided with a plurality of locking screws for fixing the stator assembly, and the locking screws penetrate into the shell from the shell surface and are pressed against the stator assembly;

[0011] The shell body is provided with a shell wire outlet hole, and the rotor shaft is provided with a shaft wire outlet hole.

[0012] Preferably, the stator assembly consists of a bushing, a first half magnetic ring and a first frame, the first half magnetic ring is arranged inside the bushing, the first frame is arranged inside the first half magnetic ring, and a stator coil is arranged on the first frame.

[0013] Preferably, the rotor assembly consists of a second half magnetic ring and a second skeleton, the second half magnetic ring is sleeved on the outside of the rotor shaft, the second skeleton is arranged on the second half magnetic ring, and a rotor coil is arranged on the second skeleton, and the rotor coil corresponds to the position of the stator coil.

[0014] Preferably, the isolation structure comprises a first isolation cover and a second isolation cover, wherein the first isolation cover is arranged between the two stator assemblies, and the second isolation cover is arranged between the two rotor assemblies.

[0015] Preferably, the first isolation cover is an annular structure, consisting of an outer positioning ring and an outer isolation plate, the outer wall of the outer positioning ring is connected to the inner wall of the shell, and the two ends are respectively connected to the two bushings, and the outer isolation plate is arranged in the middle of the inner wall of the outer positioning ring.

[0016] Preferably, the second isolation cover consists of an inner positioning ring and an inner isolation plate, the inner isolation plate is arranged in the middle of the outer wall of the inner positioning ring, the inner positioning ring is sleeved on the outer side of the rotor shaft, and the two ends are respectively connected to the two second half magnetic rings.

[0017] Preferably, one end of the rotor shaft is rotatably engaged with the housing via a bearing, a sleeve is provided at the other end of the rotor shaft, a bearing seat supporting the sleeve is provided on the sealing cover, and the sleeve is rotatably engaged with the bearing seat via a bearing.

[0018] In summary, the beneficial effects of the utility model are: 1. It can be fixed directly by the shell with bolts. Compared with the existing welding installation method, the installation and disassembly operations are convenient, and non-destructive disassembly can be achieved, which reduces the use cost;

[0019] 2. The sealing cover and the shell are sealed together, which makes it easy to remove the sealing cover. After removing the sealing cover, the internal components of the shell can be easily taken out for maintenance, thereby improving maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a main structural schematic diagram of the utility model;

[0022] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0023] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure along the BB direction;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the utility model.

[0025] The following are the descriptions of the reference numerals:

[0026] 1. Shell; 2. Bushing; 3. First half magnetic ring; 4. First isolation cover; 5. Bearing seat; 6. Sealing cover; 7. Bushing; 8. Second half magnetic ring; 9. Second frame; 10. Second isolation cover; 11. First frame; 12. Rotor shaft; 13. Locking screw; 14. Shell outlet hole; 15. Threaded hole; 16. Shaft outlet hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0028] See also Figure 1-Figure 4As shown, the utility model provides a rotary coupler that is easy to disassemble and assemble, including a housing 1 and a rotor shaft 12, wherein the rotor shaft 12 is arranged inside the housing 1, and two stator assemblies are arranged on the housing 1, and two rotor assemblies are arranged on the rotor shaft 12, wherein the rotor assemblies are arranged in a one-to-one correspondence with the stator assemblies, and one stator assembly and one rotor assembly form a coupling structure; the two coupling structures are respectively a power supply coupling structure and a communication coupling structure, which are respectively used for powering the tire pressure monitoring sensor and transmitting the monitoring signal;

[0029] An isolation structure is arranged between the two coupling structures, and the isolation structure is used to eliminate the mutual influence between the two sets of coupling structures; the isolation structure includes a first isolation cover 4 and a second isolation cover 10, the first isolation cover 4 is arranged between the two stator assemblies, and the second isolation cover 10 is arranged between the two rotor assemblies; the first isolation cover 4 is an annular structure, consisting of an outer positioning ring and an outer isolation plate, the outer wall of the outer positioning ring is connected to the inner wall of the shell 1, and the two ends are respectively connected to the two bushings 2, and the outer isolation plate is arranged in the middle of the inner wall of the outer positioning ring; the second isolation cover 10 is composed of an inner positioning ring and an inner isolation plate, the inner isolation plate is arranged in the middle of the outer wall of the inner positioning ring, the inner positioning ring is sleeved on the outside of the rotor shaft 12, and the two ends are respectively connected to the two second half magnetic rings 8; at the same time, the outer isolation plate corresponds to the inner isolation plate in position, and a small diameter annular gap will be formed between the two, thereby further reducing the mutual influence between the two coupling structures;

[0030] One end of the housing 1 is open, and the rotor shaft 12 is inserted through the open end of the housing 1 and then passes through the middle of the other end. A sealing cover 6 is provided at the open end of the housing 1.

[0031] The end of the housing 1 is provided with a plurality of threaded holes 15, and the threaded holes 15 are used to fit bolts to mount the housing 1 at a fixed position corresponding to the wheel, and the rotor shaft 12 is fixedly connected to the transmission structure of the wheel and rotates with the wheel;

[0032] The surface of the housing 1 is provided with a plurality of locking screws 13 for fixing the stator assembly, and the locking screws 13 penetrate into the interior of the housing 1 from the surface of the housing 1 and are tightened against the stator assembly; the stator assembly is composed of a bushing 2, a first half magnetic ring 3 and a first skeleton 11, the first half magnetic ring 3 is arranged inside the bushing 2, the first skeleton 11 is arranged inside the first half magnetic ring 3, and a stator coil is arranged on the first skeleton 11; the rotor assembly is composed of a second half magnetic ring 8 and a second skeleton 9, the second half magnetic ring 8 is sleeved on the outside of the rotor shaft 12, the second skeleton 9 is arranged on the second half magnetic ring 8, and a rotor coil is arranged on the second skeleton 9, and the rotor coil corresponds to the position of the stator coil;

[0033] The shell 1 is provided with a shell outlet hole 14 for connecting external power lines and signal lines. The rotor shaft 12 is provided with a shaft outlet hole 16 for connecting the power line and signal line of the tire pressure monitoring sensor end.

[0034] One end of the rotor shaft 12 is rotatably matched with the housing 1 through a bearing, and the other end of the rotor shaft 12 is provided with a sleeve 7. A bearing seat 5 supporting the sleeve 7 is provided on the sealing cover 6, and the sleeve 7 is rotatably matched with the bearing seat 5 through a bearing. After removing the locking screw 13 and the sealing cover 6, the bearing seat 5 and the sleeve 7 are removed, and the two coupling structures can be taken out separately for inspection and parts replacement. The disassembly and assembly operation is convenient, and the use cost can be reduced compared with the existing rotary coupler.

[0035] By adopting the above structure, the shell 1 can be directly fixed with bolts. Compared with the existing welding installation method, the installation and disassembly operations are convenient, and non-destructive disassembly can be achieved, thereby reducing the cost of use. The sealing cover 6 is convenient to disassemble by sealing in cooperation with the shell 1, and after removing the sealing cover 6, the internal components of the shell 1 can be conveniently taken out for maintenance, thereby improving the maintenance efficiency.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A rotary coupler that is easy to disassemble and assemble, characterized in that: The invention comprises a housing (1) and a rotor shaft (12), wherein the rotor shaft (12) is arranged inside the housing (1), two stator assemblies are arranged on the housing (1), and two rotor assemblies are arranged on the rotor shaft (12), wherein the rotor assemblies are arranged in a one-to-one correspondence with the stator assemblies, and one stator assembly and one rotor assembly form a coupling structure; An isolation structure is provided between the two coupling structures; One end of the shell (1) is open, the rotor shaft (12) is inserted through the open end of the shell (1) and then passes through the middle of the other end, and a sealing cover (6) is provided at the open end of the shell (1); The end of the housing (1) is provided with a plurality of threaded holes (15); The surface of the housing (1) is provided with a plurality of locking screws (13) for fixing the stator assembly, and the locking screws (13) penetrate into the interior of the housing (1) from the surface of the housing (1) and are pressed against the stator assembly; The housing (1) is provided with a housing wire outlet hole (14), and the rotor shaft (12) is provided with a shaft wire outlet hole (16).

2. A rotary coupler that is easy to disassemble and assemble according to claim 1, characterized in that: The stator assembly consists of a bushing (2), a first half magnetic ring (3) and a first frame (11); the first half magnetic ring (3) is arranged inside the bushing (2); the first frame (11) is arranged inside the first half magnetic ring (3); and a stator coil is arranged on the first frame (11).

3. A rotary coupler that is easy to disassemble and assemble according to claim 2, characterized in that: The rotor assembly consists of a second half magnetic ring (8) and a second frame (9); the second half magnetic ring (8) is sleeved on the outside of the rotor shaft (12); the second frame (9) is arranged on the second half magnetic ring (8); a rotor coil is arranged on the second frame (9); and the rotor coil corresponds to the position of the stator coil.

4. The rotary coupler that is easy to disassemble and assemble according to claim 3, characterized in that: The isolation structure comprises a first isolation cover (4) and a second isolation cover (10), wherein the first isolation cover (4) is arranged between the two stator assemblies, and the second isolation cover (10) is arranged between the two rotor assemblies.

5. The rotary coupler convenient for assembly and disassembly according to claim 4, characterized in that: The first isolation cover (4) is an annular structure, consisting of an outer positioning ring and an outer isolation plate. The outer wall of the outer positioning ring is connected to the inner wall of the shell (1), and the two ends are respectively connected to the two bushings (2). The outer isolation plate is arranged in the middle of the inner wall of the outer positioning ring.

6. The rotary coupler that is easy to disassemble and assemble according to claim 4, characterized in that: The second isolation cover (10) is composed of an inner positioning ring and an inner isolation plate, wherein the inner isolation plate is arranged in the middle of the outer wall of the inner positioning ring, and the inner positioning ring is sleeved on the outer side of the rotor shaft (12), and the two ends are respectively connected to the two second half magnetic rings (8).

7. The rotary coupler that is easy to disassemble and assemble according to claim 1, characterized in that: One end of the rotor shaft (12) is rotatably engaged with the housing (1) via a bearing, the other end of the rotor shaft (12) is provided with a shaft sleeve (7), the sealing cover (6) is provided with a bearing seat (5) supporting the shaft sleeve (7), and the shaft sleeve (7) is rotatably engaged with the bearing seat (5) via a bearing.

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