CN200986837Y - Electromagnet structure improvement - Google Patents

Abstract

An improved structure of electromagnet is prepared as setting iron sheet ring formed by punching in a mould, combining iron sheet ring with plastic material to form a hollow top cover with screw teeth on top, forming a bobbin for winding coil at bottom of top cover, setting a movable iron core in bobbin and sleeving it in a cylindrical shell to expose end of movable iron core out of top cover for riveting top cover and shell, setting bottom cover at bottom of shell for riveting bottom cover.

Description

Electromagnet structure improvement

technical field

The utility model relates to an improvement of an electromagnet structure, especially a top cover structure of an electromagnet formed by combining an iron sheet ring and a plastic material by using an injection molding processing method, so as to meet the requirements of the manufacturing cost reduction specification. And it can limit the magnetic field to the fixed circuit to produce linear motion, especially suitable for electromagnets or similar structures.

Background technique

Press, an electromagnet is a component that converts magnetic energy into linear reciprocating power. For example, any mechanism that requires intermittent action can be designed and used, so it can be used in a wide range of applications. The common electromagnet structure is composed of a cylinder The body is formed by turning a cylindrical shell with a threaded head at one end by lathe processing machine, and after anti-rust plating treatment, a cover is combined at the bottom of the shell. However, these common electromagnet structures not only cause waste of raw materials, but also must meet the specifications after anti-rust plating treatment. Therefore, the inspection accuracy is high and the procedures are complicated, resulting in high processing costs. And the product The inconsistency is also high, so it is not suitable for mass production.

In view of this, the inventor of the present invention aimed at the shortcomings of the above-mentioned structure to be improved, and devoted himself to research and design of the assembly system, hoping to effectively improve the above-mentioned shortcomings, which is the motivation for the invention to be developed by the utility model.

Contents of the invention

The main purpose of the utility model is to provide an improved structure of the electromagnet, so that the product can more easily meet the specifications of the precision requirements, and improve the working time and the output of the product, so as to reduce the manufacturing cost.

In order to achieve the above purpose, the improved structure of the electromagnet provided by the utility model is mainly formed by a punching and forming and the peripheral ring is provided with a plurality of slotted holes for riveting of the shell, which is lined in a mold , processed by plastic injection molding, and through the multiple perforations set on the iron sheet ring or the side of the top flange, it is convenient for the material to be combined when the plastic is injected, and the iron sheet ring and the plastic material can be tightly combined , and form a hollow top cover with screw teeth on the top, and a bobbin for coil winding is formed at the bottom, and a movable iron core is passed through the bobbin, and is sleeved in a cylindrical shell, so that The end of the movable iron core is exposed outside the top cover, and the top cover and the shell are riveted and fixed to each other, and the bottom of the shell is riveted and fixed with a bottom cover equipped with a fixed iron core, so that the magnetic field is limited to The fixed circuit is used to drive the movable iron core to produce linear motion, thereby eliminating the complicated processing procedures such as top cover turning and plating, so as to reduce the cost of manufacturing and improve the product to more easily meet the specifications required for precision.

Other characteristics and specific embodiments of the utility model can be further understood in the following detailed description with accompanying drawings.

Description of drawings

Fig. 1 is a three-dimensional appearance view of the utility model.

Fig. 2 is a structural exploded schematic diagram of the utility model.

Fig. 3 is a sectional view of the utility model.

Fig. 4 is an exploded schematic diagram of the structure of the second embodiment of the present invention.

Fig. 5 is a sectional view of the second embodiment of the present invention.

Detailed ways

Please refer to FIGS. 1 to 3 , the utility model is composed of a casing 10 , a bottom cover 20 , a top cover 30 and a movable iron core 40 .

Among them, the housing 10 is formed by stamping one or more pieces of magnetically permeable metal plates with corresponding tenons 11 and sockets 12 on both sides, and is bent and pressed together to form a cylindrical housing 10. Protruding pieces 13 and 14 are respectively provided at the two ends of the housing 10 , and protruding ribs 15 and 16 are provided on the two side edges of the protruding pieces 13 and 14 for riveting of the bottom cover 20 and the top cover 30 .

The bottom cover 20 is provided with a perforation 21 in the center, and a fixed iron core 22 is fixed in the perforation 21, and an inclined surface 23 is provided on the top surface of the fixed iron core 22 to increase the magnetic contact area with the movable iron core 40 , and a groove 24 corresponding to the lug 14 at the bottom end of the housing 10 is provided on the side edge of the bottom cover 20 .

The top cover 30 is provided with a stamped iron ring 31, and the peripheral ring is provided with a plurality of slots 311 corresponding to the top protruding piece 13 of the housing 10, and the flange at the top of the iron ring 31 The side of 312 is provided with a plurality of perforated holes 313, which can be used for the convenience of feeding and combining the materials when the plastic is injected, so as to facilitate the close combination of two different materials, and the iron ring 31 is lined in a mold, and processed by plastic injection molding. The iron ring 31 is combined with the injected plastic material to form a top cover 30 with a shaft hole 32, and the top end of the top cover 30 has a thread 33 on the outer edge of the shaft hole 32, and the bottom of the top cover 30 is A bobbin 34 is formed, and a bottom plate 35 is provided at the bottom of the bobbin 34 so that the coil 36 can be wound between the bobbins 34 .

The movable iron core 40 is provided with a conical end 41 at the bottom to correspond to the inclined surface 23 of the fixed iron core 22, while the top is provided with a slot 42 for connecting the moving parts, and a side edge is provided with a The fixing hole 43 is vertical and runs through the sectional groove 42 , and a ring groove 44 is provided below the fixing hole 43 .

When assembling, align the groove 24 of the lower cover 20 with the protruding piece 13 at the bottom of the housing 10 and cover it, and rivet the ribs 15 on both sides of the protruding piece 13 to the bottom cover 20 to fix it, so as to achieve easy assembly convenience; and the movable iron core 40 is arranged in the shaft hole 32 of the top cover 30, and installed inside the housing 10, and the front end of the movable iron core 40 is exposed, and the top cover 30 iron sheet ring The slot hole 311 on the periphery of the housing 10 is aligned with the lug 14 on the top of the housing 10, and the ribs 16 on both sides of the lug 14 are riveted on the top cover 30 to fix it, and then a nut 50 is screwed on the top cover. On the thread 33 of the cover 30, a gasket 51 is sleeved at the end of the movable iron core 40, and a C-shaped ring 52 is fastened on the ring groove 44 to form a brand-new electromagnet structure. The thread 33 of the electromagnet top cover 30 is formed by injection molding of plastic material, so when the nut 50 is screwed, even if the precision is not good, the effect of automatic tapping can still be produced when the screw is locked, and it is easy to meet the requirements. It can meet the requirements of the standard, and can save complicated processing procedures such as turning teeth and anti-rust plating treatment, so as to reduce its manufacturing cost.

Please refer to Fig. 4, shown in Fig. 5, it is another embodiment of the present utility model, mainly is that a bottom end portion is the permeable magnet block 37 of an oblique cone surface 371 inside the iron ring 31 of top cover 30, and The core of the magnet guide block 37 is provided with a perforation 372, and the top outer edge ring is provided with an external thread 373, so that the magnet guide block 37 is closely combined with the plastic material and fixed on the iron ring 31 flange during injection molding. A plurality of piercing holes 313 provided on the side of 312 can also be arranged on the ring sheet, which can also achieve the effect of convenient feeding and joint combination when setting out the molding, and can also make the plastic material and the iron sheet ring 31 tightly combined and fixed to A top cover 30 is formed, and the annular groove 44 of the movable iron core 40 is arranged on the side edge of the bottom, and the conical end 41 is arranged on the top end, so that it corresponds to the inclined surface 371 of the magnet block 37 in the pre-cover 30, A shaft 45 is fixed at the end of the conical end 41. When assembling, the movable iron core 40 is arranged in the bobbin 34 of the top cover 30, and the shaft 45 of the movable iron core 40 protrudes from the top. cover 30, and the ring groove 44 at the bottom end is exposed to the bottom cover 20, and a gasket 51 is sleeved to be fastened by a C-shaped ring 52, and the bottom cover 20, the top cover 30 and the housing 10 are riveted and fixed to each other at the same time, And when the top cover 30 coil 36 is energized to generate excitation, the magnetic field can also be limited in the fixed circuit, so that the movable iron core 40 is affected by the magnetic circuit to generate magnetism, and moves to the guide magnet block 37, and drives the moving parts to perform work. In this way, an electromagnet structure is formed.

To sum up, the utility model can indeed achieve the expected purpose of the invention, providing an electromagnet structure that is easy to meet the precision requirements and specifications, and can improve the working time and reduce the manufacturing cost, and is suitable for mass production, so it has practical value. .

Claims (5)

1. An improved electromagnet structure, which is provided with a shell, a bottom cover and a top cover. The shell is a cylindrical shell made of arc-shaped sheets, and a bottom cover is riveted on the two ends of the shell respectively. And a top cover, and a movable iron core is arranged inside the shaft hole of the top cover, so that the end of the movable iron core is exposed to the outside. It is characterized in that: the top cover is lined by a stamped iron ring In the mold, and processed by plastic injection molding, a top cover with a shaft hole in the center is formed, and the outer edge of the shaft hole on the top of the top cover has screw teeth, and the bottom forms a spool, and there is a bottom plate at the bottom of the spool. A coil is wound between the bobbins. 2. The improved structure of the electromagnet according to claim 1, wherein the iron ring of the top cover is provided with a plurality of slot holes for riveting and fixing the casing. 3. The improved structure of the electromagnet according to claim 1, wherein the upper ring of the iron sheet ring of the top cover is provided with a plurality of perforated holes. 4. An improved electromagnet structure as claimed in claim 1, characterized in that: wherein the iron ring of the top cover is provided with a plurality of hollow holes on the side ring of the top flange. 5. The improvement of a kind of electromagnet structure as claimed in claim 1, characterized in that: wherein the iron sheet ring of the top cover is provided with a magnet-conducting block, and the outer edge ring of the top end of the magnet-conducting block is provided with external threads, The center is provided with a perforation, and the bottom end is provided with an oblique cone.

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