Magnet yoke assembly of silicone oil clutch

Abstract

The utility model discloses a magnet yoke assembly of a silicone oil clutch, which comprises a magnet yoke mounting frame, a coil bracket arranged in the magnet yoke mounting frame, a magnet yoke coil wound on the coil bracket, a protective layer wrapped and wound outside the magnet yoke coil, and a protective plastic shell arranged outside the protective layer. By arranging the protection layer wrapping and winding the magnet yoke coil and the protection plastic shell located outside the protection layer, an effective protection system for the magnet yoke coil is formed, and damage of external factors to the magnet yoke coil and the connecting end of the magnet yoke coil and the contact pin is avoided to the maximum extent; the problem of disconnection between the magnet yoke coil and the contact pin in subsequent high-pressure injection molding is effectively avoided, the reliability and stability of the magnet yoke assembly under complex working conditions are remarkably improved, and normal operation of the whole silicone oil clutch is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of silicone oil clutch accessories, in particular to a magnetic yoke assembly of silicone oil clutch. BACKGROUND

[0002] In the magnetic yoke assembly of silicone oil clutch, the traditional structure mainly includes a magnetic yoke mounting frame, a coil support arranged in the magnetic yoke mounting frame, and a magnetic yoke coil wound on the coil support. The wire ends at both ends of the magnetic yoke coil are connected with the pins, and then the magnetic yoke mounting frame is injection molded outside the magnetic yoke coil to form a complete magnetic yoke assembly structure (for details, please refer to the disclosure in the application number 2019111990690, a double-way oil return mechanism of an electrically controlled silicone oil fan clutch).

[0003] However, in this traditional production process, since the magnetic yoke mounting frame is formed by high-pressure injection molding, the high temperature and strong extrusion force generated during the injection molding process will have a serious impact on the connection part of the pins and the magnetic yoke coil. Specifically, the high temperature will change the material properties of the connection part, reducing its connection strength and stability, and the strong extrusion force will directly act on the connection part, making the connection of the pins and the magnetic yoke coil prone to breaking due to heat and extrusion. Once this connection is broken, the entire magnetic yoke assembly will become a defective product and cannot work normally, which not only leads to a large amount of waste of raw materials and increases production costs, but also seriously affects the production efficiency and yield of the product, restricting the large-scale production and application of the silicone oil clutch magnetic yoke assembly in related fields.

[0004] In summary, in the existing technology of the silicone oil clutch magnetic yoke assembly, the connection part of the magnetic yoke coil and the pins is subjected to heat and extrusion during high-pressure injection molding, which needs to be solved to improve product quality and yield, meet the growing market demand and promote further development of the industry. UTILITY MODEL CONTENTS

[0005] The utility model provides a magnetic yoke assembly of silicone oil clutch in view of the deficiency in the background art.

[0006] The technical scheme adopted by the utility model is: a magnetic yoke assembly of silicone oil clutch, comprising a magnetic yoke mounting frame, a coil support arranged in the magnetic yoke mounting frame, and a magnetic yoke coil wound on the coil support, further comprising a protective layer wrapped around the magnetic yoke coil and a protective plastic shell arranged outside the protective layer.

[0007] Further, the protective shell is injection molded by low-pressure process, and the coil support is injection molded by high-pressure process.

[0008] Further, the protective layer is Teflon.

[0009] Further, the protective plastic shell is externally spaced with a plurality of convex points.

[0010] Further, the convex points include cylindrical convex points and semi-circular cone convex points, which are externally spaced on the protective plastic shell.

[0011] Further, one side of the coil support is provided with a pin boss extending from the opening of the magnetic yoke mounting bracket, the end of the magnetic yoke coil is electrically connected with the pin on the pin boss through the pin boss, and the protective plastic shell can extend to cover the lower part of the pin boss.

[0012] Further, the coil support is provided with a wire groove extending to the lower part of the pin boss.

[0013] The beneficial effects of the utility model are:

[0014] I. Improve product quality

[0015] By adding the protective layer wrapped around the magnetic yoke coil and the protective plastic shell outside the protective layer, a double protection structure for the connecting end between the magnetic yoke coil and the pin is successfully constructed. The protective layer can buffer the extrusion force generated during the high-pressure injection molding process to some extent, avoiding its direct action on the connecting end (the connecting end should be understood as the connecting section of the wire between the magnetic yoke coil and the pin); and the protective plastic shell further enhances the overall protection effect of the connecting end, preventing it from being affected by external environmental factors and various adverse effects that may occur during the injection molding process. This structural design greatly reduces the risk of disconnection of the pin and the magnetic yoke coil due to heat and extrusion, effectively reduces the occurrence of defective products, significantly improves the quality stability and reliability of the product, and ensures that the magnetic yoke assembly can play a long-term stable role in the silicone oil clutch.

[0016] II. Improve yield and reduce production cost

[0017] Due to the effective solution of the problem of high defective product rate caused by the damage of the connecting end, the yield of the product has been greatly improved. In the mass production process, the improvement of the yield means that the waste of raw materials is greatly reduced, and the human, material and other resources in the production process can be more efficiently utilized, thereby significantly reducing the production cost of unit product. This not only helps enterprises to improve their economic benefits and market competitiveness, but also to a certain extent promotes the cost control and resource optimization allocation of the entire silicone oil clutch industry, and promotes the sustainable development of the industry.

[0018] III. Enhance product structure stability and durability

[0019] The existence of the protective layer and the protective plastic shell not only protects the connecting end, but also reinforces and stabilizes the entire magnetic yoke coil. They can reduce displacement or deformation of the magnetic yoke coil in the process of use due to external factors such as vibration and impact, maintain the winding structure integrity of the magnetic yoke coil, and further enhance the structural stability of the magnetic yoke assembly as a whole. The improvement of the structural stability helps to prolong the service life of the magnetic yoke assembly, improve its durability, reduce the equipment downtime and maintenance cost caused by product failure, and provides a strong guarantee for the stable operation of the related equipment.

[0020] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

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

[0022] Figure 2 It is a rear schematic diagram of the hidden magnetic yoke mounting rack.

[0023] Figure 3 It is a cross-sectional schematic diagram after the hidden magnetic yoke mounting rack.

[0024] Figure 4 It is a structural schematic diagram of the mounting rack.

[0025] Figures 1-4 Magnetic yoke mounting rack, coil support, magnetic yoke coil, protective layer, protective plastic shell, cylindrical protrusion, semicircular conical protrusion, opening, pin protrusion, pin, wire slot. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.

[0028] The utility model provides a kind of silicon oil clutch's magnetic yoke assembly.

[0029] In the embodiment, referring to Figures 1-4 The magnetic yoke assembly of the silicone oil clutch comprises a magnetic yoke mounting frame 1, a coil support 2 arranged in the magnetic yoke mounting frame 1, and a magnetic yoke coil 3 wound on the coil support 2, and further comprises a protective layer 4 wrapped around the magnetic yoke coil 3 and a protective plastic shell 5 arranged outside the protective layer.

[0030] In the above technical solution, the protective layer wrapped around the magnetic yoke coil and the protective plastic shell outside the protective layer form an effective protection system for the magnetic yoke coil, which maximally avoids damage to the magnetic yoke coil and its connection end with the pin by external factors, effectively avoids the disconnection between the magnetic yoke coil and the pin in subsequent high-pressure injection, significantly improves the reliability and stability of the magnetic yoke assembly under complex working conditions, and ensures the normal operation of the entire silicone oil clutch.

[0031] Specifically, the protective shell is made of low-pressure injection molding, and the coil support is made of high-pressure injection molding.

[0032] In the embodiment, the protective shell is made of low-pressure injection molding, which effectively reduces the thermal stress and mechanical stress on the internal structure, especially the magnetic yoke coil and the connection end of the pin, during the injection molding process, reduces the risk of damage to the connection end caused by high-pressure injection, and improves the yield of the product; at the same time, the coil support is made of high-pressure injection molding, which can ensure that the coil support has sufficient strength and precision to stably support the magnetic yoke coil, so that the structure of the entire magnetic yoke assembly is more stable and durable.

[0033] Specifically, the protective layer is Teflon.

[0034] In the embodiment, Teflon is selected as the protective layer because it has excellent high-temperature resistance, corrosion resistance, low friction coefficient, and good insulation performance, which can effectively protect the magnetic yoke coil from high temperature and pressure damage during high-pressure injection molding, and can resist the erosion of various harsh environmental factors on the magnetic yoke coil during long-term use, further prolonging the service life of the magnetic yoke assembly and ensuring the safety and stability of electrical insulation.

[0035] Specifically, a plurality of protrusions are arranged on the outer surface of the protective plastic shell.

[0036] In the embodiment, the protrusions arranged on the outer surface of the protective plastic shell can increase the friction between the magnetic yoke mounting frame and the protective plastic shell, effectively avoiding the relative rotation between the two. In the current structure, the pin boss of the coil support protrudes from the opening of the magnetic yoke mounting frame, and if the two rotate relative to each other, the force will be completely applied to the pin boss, which may cause the pin boss to break. Through the above structure, the pressure on the pin boss can be shared, improving the stability of the product.

[0037] Specifically, the convex points include cylindrical convex points 6 and semi-circular cone convex points 7, which are arranged on the outer circle of the protective plastic shell in an interval manner.

[0038] In the embodiment, the convex points with different structures are adopted to further improve the anti-skid performance.

[0039] Specifically, one side of the coil support is provided with a pin boss 9 extending from the opening 8 of the magnetic yoke mounting bracket, the end of the magnetic yoke coil passes through the pin boss 9 and is electrically connected with the pin 10 on the pin boss 9, and the protective plastic shell can extend to wrap the lower part of the pin boss.

[0040] In the embodiment, the protective plastic shell can extend to wrap the lower part of the pin boss, so that the wiring end of the magnetic yoke coil and the pin boss is protected between the protective plastic shell and the pin boss, the connection part of the pin boss and the magnetic yoke coil is protected in all directions, the key connection part is prevented from being exposed to the external environment and being disturbed by dust, moisture, mechanical impact and other factors, the probability of connection loosening, short circuit and other faults is effectively reduced, and the long-term stability and reliability of the electrical connection between the magnetic yoke coil and the pin are ensured.

[0041] Specifically, the coil support is provided with a wire groove 11 extending to the lower part of the pin boss.

[0042] In the embodiment, the wire groove extending to the lower part of the pin boss is arranged on the coil support, an orderly wiring channel is provided for the wire of the magnetic yoke coil, the wire can be arranged in an orderly manner in the process of connecting the pin, the disorder of the wire such as winding and crossing is avoided, the local electric field concentration and electromagnetic interference problem caused by uneven distribution of the wire is reduced, meanwhile, the wire groove plays a certain fixing and protection role for the wire, the stability of the overall structure of the magnetic yoke assembly is enhanced, and the reliability and durability of the product are further improved.

[0043] Skilled persons should know that although the utility model has been described according to the above specific embodiments, the utility model idea is not limited to the utility model, and any modification using the utility model idea will be included in the patent protection range.

Claims

1. A magnetic yoke assembly for a silicone oil clutch, comprising a yoke mount, a coil support disposed within the yoke mount, and a yoke coil wound on the coil support, characterized by: The protection layer is wrapped around the magnetic yoke coil, and the protection plastic shell is arranged outside the protection layer.

2. The magnetic yoke assembly of a silicone oil clutch of claim 1, wherein: The protection shell is formed by low-pressure injection molding, and the coil support is formed by high-pressure injection molding.

3. The magnetic yoke assembly of a silicone oil clutch of claim 1, wherein: The protection layer is Teflon.

4. The magnetic yoke assembly of a silicone oil clutch of claim 1, wherein: A plurality of convex points are arranged on the outer periphery of the protection plastic shell.

5. The magnetic yoke assembly of a silicone oil clutch of claim 4, wherein: The convex points include cylindrical convex points and semi-circular cone convex points, which are arranged on the outer periphery of the protection plastic shell.

6. The magnetic yoke assembly of a silicone oil clutch of claim 1, wherein: One side of the coil support is provided with a pin boss extending from the opening of the magnetic yoke mounting frame, the end of the magnetic yoke coil is electrically connected with the pin on the pin boss through the pin boss, and the protection plastic shell can extend to cover the lower part of the pin boss.

7. The magnetic yoke assembly of the silicone oil clutch of claim 6, wherein: The coil support is provided with a wire groove extending to the lower part of the pin boss.

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