TWI788140B - Anti-corrosion magnetic gear - Google Patents

Abstract

An anti-corrosion magnetic gear having a shaft seat, a magnet ring, an anti-corrosion film, two sealing rings and a side-cover ring is provided. The shaft seat includes a base and a shaft extending from the base. The magnet ring is sleeved on the shaft and has an outer ring surface and two opposite side planes. The outer ring surface is connected between the side planes. The anti-corrosion film covers on the outer ring surface and shields part of the side planes. Each sealing ring is sleeved on the shaft and separately located on both sides of the magnet ring to abut against the anti-corrosion film on each side plane. The side-cover ring locks the shaft and presses each sealing ring and the magnet ring longitudinally toward the base to avoid the magnet ring being corroded by corrosive chemicals in a working environment.

Description

Anti-corrosion magnetic wheel

The invention relates to a magnetic wheel, in particular to a corrosion-resistant magnetic wheel capable of protecting a magnet ring from corrosive chemical substances.

Gears are very common transmission parts in various manufacturing industries. However, under long-term contact, there will still be wear problems, and then particles will be generated, which will seriously affect the process of circuit boards or wafers. yield. Therefore, a Magnetic Gear is derived to replace the gear. The Magnetic Gear does not have the teeth of the traditional gear, but uses the attraction and repulsion of the magnetic coupling force to achieve the purpose of transmission.

The general magnetic wheel is usually equipped with a magnet ring on a metal shaft seat. However, in some wet processes with acid-base liquids, acid-base mist or chemical vapors, it is easy to cause metal corrosion, or in production lines such as circuit boards and wafers in pickling or chemical cleaning processes, The magnet ring exposed to the working environment for a long time is easily corroded by acid and alkali substances or corrosive chemicals, which will cause it to malfunction and need to be replaced. Therefore, how to make the magnetic wheel effectively anti-corrosion and operate permanently without replacement is an urgent need to improve Shortcomings.

In view of this, the present inventor aimed at the above-mentioned deficiencies in the prior art, devoted himself to research and combined with the application of theories, and tried his best to solve the above-mentioned problems, which became the goal of the inventor's improvement.

The main purpose of the present invention is to effectively prevent the magnet ring from being corroded by corrosive chemical substances in the working environment.

In order to achieve the above object, the present invention provides an anti-corrosion magnetic wheel, which includes a shaft seat, a magnet ring, a corrosion-resistant film, two sealing rings and a side cover ring. The shaft seat includes a base and a shaft extending from the base. Rod, the magnet ring is sleeved on the shaft rod, the magnet ring has an outer ring surface and two opposite side planes, the outer ring surface is connected between the side planes, the anti-corrosion film covers the outer ring surface and covers at least In one part, each sealing ring is set on the shaft and is located on both sides of the magnet ring respectively. Each sealing ring touches the anti-corrosion film on each side plane respectively. ring and magnet ring.

The present invention also has the following effects: through the positioning hole passing through the base to the shaft hole, the positioning member can penetrate to tighten the rotating shaft and fix it on the shaft seat. The thread sealant is coated on the surface of the internal thread and the external thread, so that it can be completely sealed after screwing to prevent the penetration of corrosive chemicals from the thread. With the clamping plane on the outer edge of the base and the side cover ring, it can be clamped by tools to facilitate force locking. The sealing rings are accommodated in the annular grooves, so that the sealing rings are not directly exposed and corroded by corrosive chemicals.

The detailed description and technical content of the present invention will be described as follows with accompanying drawings, but the attached drawings are only for illustration purposes and are not intended to limit the present invention.

The present invention provides a corrosion-resistant magnetic wheel. Please refer to FIGS.

In this embodiment, the shaft seat 10 is a plastic part, but the invention is not limited thereto. For example, the shaft seat 10 can also be made of corrosion-resistant metal parts or other corrosion-resistant materials. The shaft base 10 includes a base 11 and a shaft 12 , the shaft 12 extends longitudinally from a side of the base 11 . Specifically, both the base 11 and the shaft 12 are cylindrical and have the same axis, and the diameter of the shaft 12 is smaller than that of the base 11 . The shaft seat 10 has a shaft hole 13 , the shaft hole 13 runs through the base 11 and the shaft rod 12 longitudinally, so that the shaft seat 10 can be sleeved on a rotating shaft (not shown). Moreover, the base 11 is also provided with a positioning hole 14, which penetrates from the outer edge of the base 11 to the shaft hole 13, and is used for a positioning piece (not shown) to penetrate to tighten the rotating shaft. fixed on the shaft seat 10. In this embodiment, the positioning hole 14 is a screw hole and the positioning member is a bolt, but the present invention is not limited thereto, for example, the positioning member can also be a pin. In addition, the shaft hole 13 can also be a non-circular hole, so that the shaft seat 10 can form a tight fit with the rotating shaft without using a positioning piece and a positioning hole 14 without slipping.

The magnet ring 20 is an annular magnet, and the present invention does not limit the magnetism of the magnet, and the designer can make adjustments according to different requirements. The magnet ring 20 is sheathed on the shaft 12 . The magnet ring 20 has an outer ring surface 21 and two opposite side planes 22 , and the outer ring surface 21 is connected between the two side planes 22 .

The anti-corrosion film 30 covers the outer ring surface 21 and shields at least a part of each side plane 22 . In this embodiment, the anti-corrosion film 30 can be a protective layer formed through organic coating, inorganic coating, metal coating, surface hardening treatment, cathodic treatment or anodic treatment, but the present invention is not limited to this, as long as it can It only needs to effectively prevent the erosion of corrosive chemical substances, and the designer can also adjust the composition and thickness of the anti-corrosion film 30 according to the requirements of different working environments.

Each sealing ring 40 is sleeved on the shaft 12 and located on the left and right sides of the magnet ring 20 respectively, and each sealing ring 40 abuts against the anti-corrosion film 30 on each side plane 22 respectively. In this embodiment, the sealing ring 40 is an O-ring, but the invention is not limited thereto.

The side cover ring 50 is locked to the shaft 12 , and longitudinally presses the sealing rings 40 and the magnet ring 20 toward the base 11 , so that the sealing rings 40 are tightly clamped on the anti-corrosion films 30 of the side planes 22 . In this embodiment, the side cover ring 50 is a plastic part, but the present invention is not limited thereto. For example, the side cover ring 50 can also be made of corrosion-resistant metal parts or other corrosion-resistant materials, and the side cover ring 50 is preferably made of the same material as the shaft seat 10 to facilitate manufacturing and assembly. The inner edge of the side cover ring 50 is provided with an internal thread 51 , and the end of the shaft 12 is provided with an external thread 15 , and the internal thread 51 is screwed to the external thread 15 to lock the side cover ring 50 on the shaft 12 . Preferably, a thread sealant A is coated on the surface of the internal thread 51 and the external thread 15, so that the internal thread 51 and the external thread 15 are completely sealed through the cured thread sealant A after screwing, thereby avoiding corrosive chemicals. Substance penetrates through threads. Moreover, the outer edges of the base 11 and the side cover ring 50 are respectively provided with two opposite clamping planes 16, 52, so that when the side cover ring 50 is locked on the shaft rod 12, tools (such as: pliers) can be used. ) are clamped on each clamping plane 16, 52 to facilitate locking by applying force.

To further illustrate, the base 11 is recessed with an annular groove 17 on the side extending from the shaft 12 , and the side cover ring 50 is recessed with another annular groove 53 facing the side of the base 11 . The sealing rings 40 are accommodated in the annular grooves 17 , 53 respectively, so that the sealing rings 40 are not directly exposed and corroded by corrosive chemicals.

It should be noted that the magnet ring 20 has a thickness t, each sealing ring 40 has a diameter D, and each annular groove 17, 53 has a width w and a depth d. In this embodiment, the width w is greater than the diameter D, and the diameter D is greater than the depth d, so that each sealing ring 40 will protrude outside each annular groove 17, 53, so that the magnet ring when the side cover ring 50 is locked 20 is capable of contacting each sealing ring 40 for longitudinal compression, so that each sealing ring 40 is elastically deformed. Moreover, the anti-corrosion film 30 has a shielding length l for shielding the side plane 22 . The sum of the shielding length l and the 1/2 width w is greater than the thickness t, thereby ensuring that each sealing ring 40 abuts against the anti-corrosion film 30 to play a sealing effect, thereby preventing corrosive chemicals from coming out of the anti-corrosion film 30 and The magnet ring 20 is corroded by penetration between the seal rings 40 . In this embodiment, the shielding length l is equal to the thickness t of the magnet ring 20 , but the invention is not limited thereto.

In summary, the present invention has industrial applicability, novelty and progress, fully meets the requirements for patent application, and should be filed in accordance with the Patent Law. Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can evolve various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and deformations should belong to the protection scope of the patent application for the present invention.

10: shaft seat 11: base 12: shaft 13: shaft hole 14: positioning hole 15: external thread 16, 52: clamping plane 17, 53: Annular groove 20: magnet ring 21: Outer ring surface 22: side plane 30: anti-corrosion film 40: sealing ring 50: side cover ring 51: internal thread A: thread sealant d: depth D: diameter l: masking length t: thickness w: width

Fig. 1 is the perspective view of the present invention.

Fig. 2 is a three-dimensional exploded view of the present invention.

Fig. 3 is a sectional view of the present invention.

10: shaft seat

11: base

12: shaft

13: shaft hole

14: positioning hole

15: external thread

16, 52: clamping plane

17: Annular groove

20: magnet ring

21: Outer ring surface

22: side plane

30: anti-corrosion film

40: sealing ring

50: side cover ring

51: internal thread

D: diameter

t: thickness

Claims (10)

An anti-corrosion magnetic wheel, comprising: a shaft seat comprising a base and a shaft extending from the base; A magnet ring is sheathed on the shaft, the magnet ring has an outer ring surface and two opposite side planes, and the outer ring surface is connected between the side planes; an anti-corrosion film covering the outer annular surface and covering at least a part of each side plane; two sealing rings, sleeved on the shaft and respectively located on both sides of the magnet ring, each of the sealing rings abuts against the anti-corrosion film on each of the side planes; and One side cover ring locks the shaft rod and presses each of the sealing ring and the magnet ring longitudinally toward the base. The anti-corrosion magnetic wheel according to claim 1, wherein the base and the side cover ring are respectively provided with an annular groove opposite to each other, and each of the sealing rings is respectively accommodated in each of the annular grooves. The anti-corrosion magnetic wheel according to claim 2, wherein each of the sealing rings has a diameter, and each of the annular grooves has a width, and the width is larger than the diameter. The anti-corrosion magnetic wheel as claimed in claim 3, wherein the magnet ring has a thickness, the anti-corrosion film has a shielding length shielding each of the side planes, and the sum of the shielding length and 1/2 of the width is greater than the thickness . The anti-corrosion magnetic wheel according to claim 2, wherein each of the sealing rings has a diameter, each of the annular grooves has a depth, and the diameter is greater than the depth. The anti-corrosion magnetic wheel as described in claim 1, wherein the side cover ring is provided with an internal thread, the shaft is provided with an external thread, and the internal thread is screwed to the external thread to lock the side cover ring to the shaft . The anti-corrosion magnetic wheel according to claim 6, wherein the surfaces of the internal thread and the external thread are coated with a thread sealant. The anti-corrosion magnetic wheel according to claim 6, wherein the outer edges of the base and the side cover ring are respectively provided with two opposite clamping planes. The anti-corrosion magnetic wheel according to claim 1, wherein the shaft seat has a shaft hole, and the shaft hole runs through the base and the shaft longitudinally. The anti-corrosion magnetic wheel as claimed in claim 9, wherein the base is provided with a positioning hole, and the positioning hole penetrates from the outer edge of the base to the shaft hole.

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