Insulation encoder

Abstract

The utility model belongs to the technical field of motor fittings, and relates to an insulating encoder, which comprises an insulating shaft connected with a power source and a connecting disc connected with an encoder main body, an insulating sleeve and an insulating washer are sequentially fixed at the front end of the insulating shaft, and the front end face of the insulating sleeve is connected with the rear end face of the insulating washer in an abutting manner. The rear end of the insulating sleeve is provided with a T-shaped flange, the connecting disc is sleeved on the insulating sleeve, the inner wall of the connecting disc is in contact connection with the outer wall of the insulating sleeve, the rear end face of the connecting disc is in contact connection with the front end face of the T-shaped flange, and the bottom of an inner cavity at the front side of the connecting disc is in contact connection with the rear end face of the insulating washer. The insulating encoder provided by the utility model has the advantages of simple structure, good insulating effect and wide adaptability.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor accessories and relates to an insulating encoder. Background Art

[0002] An encoder is a rotary sensor that converts the position and displacement of a rotating component into a series of digital pulse signals. These pulse signals are collected and processed by the control system, which issues a series of instructions to adjust the operating state of the equipment. Rotary encoders are also a common component of motors.

[0003] During motor operation, the rotary encoder can monitor parameters such as current, speed, and the relative position of the shaft in the circumferential direction in real time, determine the status of the motor body and the driven equipment, and further control the operating conditions of the motor and equipment in real time, thereby realizing many specific functions such as servo and speed regulation.

[0004] However, due to various reasons, electric charges easily accumulate during motor operation, generating shaft voltage across the shaft. When the charge accumulates to a certain level, it breaks through the oil film, forming a loop between the shaft, the base, and the housing, generating shaft current. This shaft current can damage the rotary encoder. Therefore, the use of an insulated encoder is essential. However, most existing insulated encoders have complex structures or affect their normal operation. In view of this, it is necessary to develop a new insulated encoder. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an insulating encoder with the advantages of simple structure, good insulation effect and wide adaptability.

[0006] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0007] An insulating encoder comprises an insulating shaft connected to a power source and a connecting disk connected to an encoder body, an insulating sleeve and an insulating washer being fixed to the front end of the insulating shaft in sequence, the front end face of the insulating sleeve being in contact with the rear end face of the insulating washer, the rear end of the insulating sleeve being provided with a T-shaped flange, the connecting disk being sleeved on the insulating sleeve, the inner wall of the connecting disk being in contact with the outer wall of the insulating sleeve, the rear end face of the connecting disk being in contact with the front end face of the T-shaped flange, and the bottom of the inner cavity on the front side of the connecting disk being in contact with the rear end face of the insulating washer.

[0008] In the above-mentioned insulating encoder, the insulating shaft includes a core shaft and an insulating layer wrapped around the core shaft, and the insulating sleeve and insulating gasket are made of insulating material as a whole; further, the insulating material adopts conventional insulating materials in this field, preferably non-polar rubber with excellent insulating properties such as NR, SBR and IIR.

[0009] In the above-mentioned insulating encoder, the insulating layer is made of insulating resin, and the insulating layer is integrally formed on the core shaft by casting; the core shaft is preferably made of a material with good strength, such as a metal material.

[0010] In the above-mentioned insulating encoder, an outer convex ring is formed at the front end of the insulating shaft, and the front end surface of the outer convex ring is in contact with the rear end surface of the T-shaped flange.

[0011] In the above-mentioned insulating encoder, the front end of the insulating shaft is threaded with a coaxial locking bolt, and the locking bolt is sleeved with a flat washer and the insulating washer. After the locking bolt is threaded with the insulating shaft, the insulating washer, insulating sleeve and connecting plate are locked.

[0012] In the above-mentioned insulating encoder, the front end face of the insulating shaft, the front end face of the insulating sleeve and the bottom of the inner cavity on the front side of the connecting disk are located in the same plane, the rear end face of the insulating washer is simultaneously in contact with the front end face of the insulating shaft, the front end face of the insulating sleeve and the bottom of the inner cavity on the front side of the connecting disk, and the rear end face of the flat washer is in contact with the front end face of the insulating washer.

[0013] In the above-mentioned insulating encoder, the flat washer, the insulating washer, the T-shaped flange of the insulating sleeve and the outer convex ring of the insulating shaft have the same outer diameter.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model provides an insulating encoder that is connected to a power source via an insulating shaft and to an encoder body via a connecting disk. The connecting disk and the insulating shaft are spaced apart and separated by an insulating sleeve and an insulating washer. Thus, the insulating shaft forms a first layer of insulation, while the insulating sleeve and insulating washer form a second layer of insulation, thereby completely isolating the encoder body from the power source. This insulating encoder has the advantages of a simple structure, good insulation performance, and wide adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is an axial cross-sectional view of the utility model;

[0018] Figure 3 It is an exploded view of the utility model;

[0019] Figure numerals: 1. insulating shaft; 2. connecting plate; 3. insulating sleeve; 4. insulating washer; 5. T-shaped flange; 6. core shaft; 7. insulating layer; 8. outer convex ring; 9. locking bolt; 10. flat washer. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-3 :

[0021] An insulating encoder comprises an insulating shaft 1 connected to a power source and a connecting disk 2 connected to an encoder body, wherein an insulating sleeve 3 and an insulating washer 4 are fixed to the front end of the insulating shaft 1 in sequence, the front end face of the insulating sleeve 3 is in contact with the rear end face of the insulating washer 4, and the rear end of the insulating sleeve 3 is provided with a T-shaped flange 5, and the front end of the insulating shaft 1 is formed with an outer convex ring 8, and the front end face of the outer convex ring 8 is in contact with the rear end face of the T-shaped flange 5. The connecting disk 2 is sleeved on the insulating sleeve 3, and the front end of the insulating shaft 1 is screwed with a coaxial locking bolt 9, and the locking bolt 9 is sleeved with a flat washer 10 and the insulating washer 4. After the locking bolt 9 is screwed to the insulating shaft 1, the insulating washer 4, the insulating sleeve 3 and the connecting disk 2 are locked.

[0022] During assembly, the insulating sleeve 3 and connecting disc 2 are sequentially inserted into the front end of the insulating shaft 1. Then, the flat washer 10 and insulating washer 4 are sequentially inserted into the locking bolt 9. The locking bolt 9 is screwed onto the front end of the insulating shaft 1. The combination of the outer convex ring 8, locking bolt 9, and flat washer 10 forms the axial limit structure at each end. After the screw connection is completed, the axial limit structure cooperates with the locking insulating washer 4, insulating sleeve 3, and connecting disc 2. Finally, the encoder body is connected to the connecting disc 2 and the insulating shaft 1 is connected to the power source (such as a motor) to complete the assembly. After assembly is completed, the inner wall of the connecting disk 2 is in contact with the outer wall of the insulating sleeve 3, the rear end face of the connecting disk 2 is in contact with the front end face of the T-shaped flange 5, and the bottom of the inner cavity on the front side of the connecting disk 2 is in contact with the rear end face of the insulating gasket 4. Through the wrapping of the T-shaped flange 5, the outer wall of the insulating sleeve 3 and the insulating gasket 4, the connecting disk 2 and the insulating shaft 1 are completely separated by the insulating material. Therefore, the insulating shaft 1 of this embodiment forms a first layer of insulation structure, and the insulating sleeve 3 and the insulating gasket 4 form a second layer of insulation structure, thereby obtaining better insulation performance.

[0023] Furthermore, the insulating shaft 1 includes a core shaft 6 and an insulating layer 7 wrapped around the core shaft 6, and the insulating sleeve 3 and the insulating gasket 4 are made of insulating materials as a whole; further, the insulating material adopts conventional insulating materials in this field, preferably non-polar rubbers with excellent insulating properties such as NR, SBR and IIR.

[0024] Furthermore, the insulating layer 7 is made of insulating resin, and the insulating layer 7 is integrally formed on the core shaft 6 by casting; the core shaft 6 is preferably made of a material with good strength, such as a metal material.

[0025] Preferably, in order to make the above-mentioned installation structure more stable, the front end face of the insulating shaft 1, the front end face of the insulating sleeve 3 and the bottom of the inner cavity on the front side of the connecting disk 2 are located in the same plane, and the rear end face of the insulating washer 4 is simultaneously in contact with the front end face of the insulating shaft 1, the front end face of the insulating sleeve 3 and the bottom of the inner cavity on the front side of the connecting disk 2, and the rear end face of the flat washer 10 is in contact with the front end face of the insulating washer 4.

[0026] Preferably, the flat washer 10 , the insulating washer 4 , the T-shaped flange 5 of the insulating sleeve 3 and the outer protruding ring 8 of the insulating shaft 1 have the same outer diameter.

[0027] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An insulating encoder, characterized in that: The invention comprises an insulating shaft (1) connected to a power source and a connecting disk (2) connected to an encoder body, wherein an insulating sleeve (3) and an insulating gasket (4) are fixed to the front end of the insulating shaft (1) in sequence, the front end face of the insulating sleeve (3) is in contact with the rear end face of the insulating gasket (4), the rear end of the insulating sleeve (3) is provided with a T-shaped flange (5), the connecting disk (2) is sleeved on the insulating sleeve (3), the inner wall of the connecting disk (2) is in contact with the outer wall of the insulating sleeve (3), the rear end face of the connecting disk (2) is in contact with the front end face of the T-shaped flange (5), and the bottom of the inner cavity on the front side of the connecting disk (2) is in contact with the rear end face of the insulating gasket (4).

2. An insulating encoder according to claim 1, characterized in that: The insulating shaft (1) comprises a core shaft (6) and an insulating layer (7) wrapped around the core shaft (6); the insulating sleeve (3) and the insulating gasket (4) are entirely made of insulating material.

3. An insulating encoder according to claim 2, characterized in that: The insulating layer (7) is made of insulating resin, and the insulating layer (7) is integrally formed on the core shaft (6) by casting.

4. The insulating encoder according to claim 1, characterized in that: An outer convex ring (8) is formed at the front end of the insulating shaft (1), and the front end surface of the outer convex ring (8) is in contact with the rear end surface of the T-shaped flange (5).

5. The insulating encoder according to claim 4, characterized in that: The front end of the insulating shaft (1) is screwed with a coaxial locking bolt (9), and a flat washer (10) and the insulating washer (4) are sleeved on the locking bolt (9). After the locking bolt (9) is screwed with the insulating shaft (1), the insulating washer (4), the insulating sleeve (3) and the connecting plate (2) are locked.

6. The insulating encoder according to claim 5, characterized in that: The front end face of the insulating shaft (1), the front end face of the insulating sleeve (3), and the bottom of the inner cavity on the front side of the connecting disk (2) are located in the same plane; the rear end face of the insulating washer (4) is simultaneously in contact with the front end face of the insulating shaft (1), the front end face of the insulating sleeve (3), and the bottom of the inner cavity on the front side of the connecting disk (2); and the rear end face of the flat washer (10) is in contact with the front end face of the insulating washer (4).

7. The insulating encoder according to claim 6, characterized in that: The flat washer (10), the insulating washer (4), the T-shaped flange (5) of the insulating sleeve (3) and the outer convex ring (8) of the insulating shaft (1) have the same outer diameter.

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