Servo motor with resolver with good oil and water resistance and servo motor

Abstract

The utility model provides a wire harness's good oil -proof waterproof performance's servo motor rotates the transformer, including the stator with stator framework, stator core and stator winding, with stator winding and from stator framework connector outward leading wire harness that is open, and wire harness includes many soft electric wires, and soft electric wire is many strands copper core or many strands aluminum core soft electric wire, through wrapping cylindrical oil -proof waterproof plug on wire harness, make it be integral moulding injection -moulded part, set up the connecting lug plate at its outer wall to lock in servo motor cover back, make the part of soft electric wire in oil -proof waterproof plug to be the wrapping part, make the wrapping part's outer skin and oil -proof waterproof plug melt as a whole, make the wrapping part have the outer skin, expose the inner wire body's exposure section, make the inner wire body four around being located in exposure section be wrapped by oil -proof waterproof plug, can isolate the oil or water along the outer skin and inner wire body and flow, and wire harness's oil -proof waterproof performance is better, the utility model provides a servo motor, and oil -proof waterproof performance is better, and electric control device is not easy to damage.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotating transformer technical field, concretely relates to a kind of wire harness oil-proof and waterproof good rotating transformer for servo motor. BACKGROUND

[0002] Rotating transformer is a kind of precision angle, position, speed detection device, applicable to all using rotary encoder occasions, especially high temperature, severe cold, damp, high speed, high vibration and other rotary encoders cannot work normally, due to the above characteristics of rotating transformer, can completely replace photoelectric encoder, is widely applied in angle, position detection system in servo system, robot system, mechanical tool, automobile, electric power, aerospace and other fields.

[0003] For servo system, rotating transformer is mostly arranged at the non-output end of servo motor, and its linear speed is usually fixed on the cover plate of the non-output end of servo motor, and the oil-proof and waterproof of this kind of servo motor mostly focuses on the cooperation of end cover and main shaft or shell (such as Chinese patent CN110429737A, CN210183146U), and does not pay attention to the oil and water leakage along the rotating transformer connecting wire harness, since rotating transformer is in high temperature and high pressure environment, the oil and water leakage of this part will cause oil to flow out to the external electric control device along the wire harness, causing damage to the electric control device, thereby affecting the use of servo system. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming one or more defects in prior art, and provides a kind of wire harness oil-proof and waterproof good rotating transformer for servo motor and a kind of servo motor with the rotating transformer.

[0005] To achieve the above-mentioned purpose, the product in the technical scheme adopted by the utility model is a wire harness oil-proof and waterproof good rotating transformer for servo motor, comprising:

[0006] Stator, the stator includes stator framework, stator core, stator winding and connector, the stator framework is annular, the connector is connected to the outer wall of the stator framework and extends horizontally outward, the connector is integrally formed with the stator framework;

[0007] Wire harness, the wire harness is in conduction with the stator winding and leads out from the connector outward;

[0008] Oil-proof and waterproof plug of cylindrical shape is wrapped on the wire harness, the oil-proof and waterproof plug is integrally formed injection molding part, and the outer wall is provided with connecting lug plate, and the connecting lug plate is locked on the back of servo motor cover plate;

[0009] The wire harness comprises a plurality of flexible wires, the flexible wires are multi-strand copper core or multi-strand aluminum core flexible wires, the part of the flexible wires in the oil-proof and water-proof plug is a wrapping part, the outer skin of the wrapping part is integrated with the oil-proof and water-proof plug to isolate the oil or water flowing along the outer skin, the wrapping part also has an exposed section with the outer skin stripped off to expose the inner wire body, the periphery of the inner wire body at the exposed section is wrapped by the oil-proof and water-proof plug to isolate the oil or water flowing along the inner wire body.

[0010] Preferably, the exposed section has two sections, and the two sections of the exposed section are arranged at intervals.

[0011] Further preferably, the two sections of the exposed section are disconnected, and the oil-proof and water-proof plug is also provided with an adapter plate, the adapter plate is located at the disconnected part between the two sections of the exposed section, and the two sections of the exposed section are connected on both sides of the adapter plate and are conducted through the adapter plate.

[0012] Further preferably, the two sections of the exposed section of all the flexible wires are conducted through the same adapter plate.

[0013] Further preferably, all the flexible wires are divided into two layers, and the exposed sections on the flexible wires in the same layer are connected on the same surface of the adapter plate.

[0014] Further preferably, the adapter plate is a PCB circuit board, and both sides of the adapter plate are provided with solder pads for soldering the exposed sections and a circuit for connecting the solder pads on both sides.

[0015] Preferably, one end of the oil-proof and water-proof plug is provided with an annular flange, and the connecting lug plate is arranged on the annular flange and extends in the radial direction of the oil-proof and water-proof plug.

[0016] Preferably, the connecting lug plate is provided with a through hole, and the connecting lug plate is locked on the back surface of the servo motor cover plate through a bolt penetrating in the through hole.

[0017] To achieve the above-mentioned purpose, the product in the technical scheme adopted by the utility model is a servo motor, the end of the servo motor is provided with a groove for embedding a rotary transformer, and the rotary transformer is any one of the above-mentioned rotary transformers.

[0018] Preferably, the end of the servo motor is also provided with a cover plate for covering the groove, the back surface of the cover plate is connected with a mounting block, and the mounting block is provided with a radial through hole for penetrating the oil-proof and water-proof plug.

[0019] Thanks to the above-mentioned technical scheme, the utility model has the following advantages compared with the prior art:

[0020] This utility model provides a rotary transformer for servo motors with excellent oil and water resistance. It includes a stator with a stator frame, stator core, and stator windings, and a wire harness connected to the stator windings and extending outwards from a connector on the stator frame. The wire harness includes multiple flexible wires, which are multi-strand copper or aluminum core flexible wires. A cylindrical oil and water resistant plug is wrapped around the wire harness, making it a single injection-molded part. Connecting lugs are provided on its outer wall to lock it to the back of the servo motor cover. The portion of the flexible wire inside the oil and water resistant plug is the wrapping part, with the outer sheath of the wrapping part integrated with the plug. The wrapping part also has an exposed section where the outer sheath can be peeled off to reveal the inner wire. The inner wire in the exposed section is surrounded by the oil and water resistant plug, effectively preventing oil or water from flowing out along both the outer sheath and the inner wire, thus improving the oil and water resistance of the wire harness. The servo motor provided by this utility model also has better oil and water resistance, and the electronic control components are less prone to damage. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the servo motor in this utility model.

[0022] Figure 2 yes Figure 1 The assembly and disassembly diagram shows that only the rotary transformer was assembled and disassembled.

[0023] Figure 3 yes Figure 2 A three-dimensional schematic diagram of the servo motor cover and the oil-proof and waterproof plug.

[0024] Figure 4 yes Figure 2 A three-dimensional schematic diagram of the oil-proof and waterproof plug and the wiring harness.

[0025] Figure 5 yes Figure 4 A 3D diagram with the oil-proof and waterproof plug removed.

[0026] The components are: 1. Cover plate; 2. Groove; 3. Mounting block; 10. Stator; 11. Stator frame; 12. Stator core; 13. Connector; 20. Wire harness; 21. Flexible wire; 211. Wrapping part; 212. Outer sheath; 213. Inner wire body; 214. Exposed section; 30. Oil and water resistant plug; 31. Connecting ear plate; 311. Through hole; 32. Adapter plate; 321. Solder pad; 33. Annular flange. Detailed Implementation

[0027] like Figures 1 to 5As shown, the utility model provides a wire harness good in oil and water resistance for the resolver of servo motor, and it comprises: stator 10, wire harness 20, stator 10 includes stator framework 11, stator core 12, stator winding (not shown in drawing) and connector 13, stator framework 11 is annular, connector 13 is connected in the outer wall of stator framework 11 and extends horizontally outward, connector 13 is integrally formed (injection molding) with stator framework 11;Wire harness 20 is in conduction with stator winding and leads out from connector 13 outward;Wire harness 20 is wrapped with cylindrical oil and water prevention plug 30, oil and water prevention plug 30 is integrally formed injection molding part, and the outer wall is provided with connecting lug plate 31, and connecting lug plate 31 is locked on the back of servo motor cover plate 1;Wire harness 20 includes multiple flexible wires 21, and flexible wire 21 is multiple copper core or multiple aluminum core flexible wire, and the part of flexible wire 21 in oil and water prevention plug 30 is wrapping part 211, and the outer skin 212 of wrapping part 211 is fused into one with oil and water prevention plug 30 by injection molding, so as to isolate the oil or water flowing along the outer skin 212;Wrapping part 211 also has exposure section 214 of peeling outer skin 212 and exposing inner wire body 213, and the four around inner wire body 213 in exposure section 214 is wrapped (the wrapping is realized by injection molding) by oil and water prevention plug 30, so as to isolate the oil or water flowing along the inner wire body 213 between the adjacent core wires.

[0028] The resolver can isolate the oil or water flowing along the outer skin by fusing the wrapping part outer skin and the oil and water prevention plug, and can isolate the oil or water flowing along the inner wire body between the adjacent core wires and between the core wire and the outer skin by injection molding, so the oil and water resistance of the wire harness is better, and the oil liquid is not easy to flow out to the external electric control device, so as to avoid damaging the electric control device.

[0029] In the embodiment, the exposure section 214 has two sections, the two sections of exposure section 214 are arranged at intervals, and the two sections of exposure section 214 are disconnected, in order to realize the conduction of the two sections of exposure section 214, further, the adapter plate 32 is arranged in the oil and water prevention plug 30, the adapter plate 32 is arranged at the disconnected position between the two sections of exposure section 214, and the two sections of exposure section 214 are connected to the two sides of the adapter plate 32 and realize the conduction through the adapter plate 32.

[0030] In order to facilitate operation, further, the adapter plate 32 is a PCB circuit board, the two sides of the adapter plate 32 are provided with the solder pad 321 for soldering the exposure section, and the circuit (not shown in the drawing) for connecting the two sides of the solder pad 321, at the same time, the two sections of exposure section 214 of all the flexible wires 21 are in conduction through the same adapter plate 32, specifically, all the flexible wires 21 are divided into two layers, the flexible wires 21 in the same layer are arranged in a line, and the exposure sections 214 on the flexible wires 21 in the same layer are connected to the same surface of the adapter plate 32.

[0031] For the convenience of connection and positioning, in the embodiment, the oil and water proof plug 30 is provided with a ring flange 33 at one end, and the connecting lug plate 31 is arranged on the ring flange 33 and extends along the radial direction of the oil and water proof plug 30, and further, the connecting lug plate 31 is provided with a through hole 311, and the connecting lug plate 31 is locked on the back of the servo motor cover plate 1 by the bolt (not shown in the figure) penetrating in the through hole 311.

[0032] The utility model also requests protecting a kind of servo motor, the end of the servo motor is provided with recess 2 for embedding rotary transformer, rotary transformer is above-mentioned rotary transformer, simultaneously, the end of the servo motor is also provided with cover plate 1 for covering recess 2, the back of cover plate 1 is connected with mounting block 3, and radial through-hole for embedding oil and water proof plug 30 is arranged on mounting block 3, and the oil and water proof property of the servo motor at rotary transformer wire harness is better, and electric control device is not easy to be damaged.

[0033] The above embodiment is only for illustrating the technical concept and characteristics of the utility model, and its purpose is to enable the person skilled in the art to understand the content of the utility model and to implement it, and it cannot limit the protection scope of the utility model, and any equivalent change or modification according to the spirit and essence of the utility model shall be covered within the protection scope of the utility model.

Claims

1. A resolver for a servo motor with good oil and water resistance of a wire harness, comprising: a stator, the stator comprising a stator skeleton, a stator core, a stator winding and a connector, the stator skeleton being annular, the connector being connected to an outer wall of the stator skeleton and extending outwardly horizontally, the connector being integrally formed with the stator skeleton; and a wire harness, the wire harness being in electrical communication with the stator winding and leading outwardly from the connector; characterized in that: a cylindrical oil and water resistant plug is wrapped on the wire harness, the oil and water resistant plug being an integrally formed injection molded part, an outer wall of the oil and water resistant plug being provided with a connecting lug plate, the connecting lug plate being locked to a back surface of a cover plate of the servo motor; the wire harness comprises a plurality of flexible wires, a portion of the flexible wires located inside the oil and water resistant plug being a wrapped portion, an outer skin of the wrapped portion being integrally formed with the oil and water resistant plug to isolate oil or water flowing along the outer skin, the wrapped portion further having an exposed section where the outer skin is peeled off to expose an inner wire body, the inner wire body located at the exposed section being wrapped by the oil and water resistant plug to isolate oil or water flowing along the inner wire body; the exposed section has two sections, the two sections of the exposed section being arranged in a spaced apart manner; the two sections of the exposed section are disconnected, an adapter plate is further provided in the oil and water resistant plug, the adapter plate being located at a disconnected position between the two sections of the exposed section, the two sections of the exposed section being connected to two sides of the adapter plate and being in electrical communication through the adapter plate; the two sections of the exposed section of all the flexible wires are in electrical communication through the same adapter plate; all the flexible wires are divided into two layers, the exposed sections on the flexible wires located in the same layer being connected to the same surface of the adapter plate; the adapter plate is a PCB circuit board, both sides of the adapter plate being provided with solder pads for soldering the exposed sections and a circuit for connecting the solder pads on both sides; one end of the oil and water resistant plug is provided with an annular flange, the connecting lug plate being arranged on the annular flange and extending in a radial direction of the oil and water resistant plug; the connecting lug plate is provided with a through hole, the connecting lug plate being locked to the back surface of the cover plate of the servo motor through a bolt inserted in the through hole; the resolver is the resolver according to any one of claims 1 to 8; the end of the servo motor is further provided with a cover plate for covering the recess, a mounting block being connected to a back surface of the cover plate, the mounting block being provided with a radial through hole for inserting the oil and water resistant plug. ​ ​ ​ ​ ​ 2. The resolver for a servo motor with good oil and water resistance of a wire harness according to claim 1, characterized in that: ​ 3. The resolver for a servo motor with good oil and water resistance of a wire harness according to claim 2, characterized in that: ​ 4. The resolver for a servo motor with good oil and water resistance of a wire harness according to claim 3, characterized in that: ​ 5. The resolver for a servo motor with good oil and water resistance of a wire harness according to claim 4, characterized in that: ​ 6. The resolver for a servo motor with good oil and water resistance of a wire harness according to claim 3, characterized in that: ​ 7. The resolver for a brushless motor according to claim 1, wherein: ​ 8. The resolver for a servo motor with good oil and water resistance of a wire harness according to claim 1, characterized by: ​ 9. A servo motor, the end portion of which is provided with a recess for embedding a rotary transformer, characterized in that: ​ 10. The servomotor of claim 9, wherein: ​

Images