CN2838137Y - Non-contact transmission unit - Google Patents

Abstract

A non-contact transmission unit includes a fixed shaft, a magnetic ring, a clamping piece, and a fixing piece; the fixed shaft has an inclined surface; the magnetic ring is sleeved on the fixed shaft, and the inner circumference of the magnetic ring and the inclined surface of the fixed shaft form an embedding groove; the inner circumference of the clamping piece is inclined, and the clamping piece is arranged in the embedding groove of the fixed shaft, so that the inner circumference of the clamping piece abuts against the inclined surface of the fixed shaft; the fixing piece is arranged on the fixed shaft to abut against the clamping piece.

Description

Non-contact transmission unit

technical field

The utility model relates to a transmission device, in particular to a non-contact transmission unit.

Background technique

In order to require high precision in modern industry, most instruments and equipment must be operated in a clean room, and traditional contact transmission devices are prone to generate dust that affects air quality during operation. Therefore, modern industries gradually use non-contact transmission devices to replace Conventional contact transmission.

Please refer to Fig. 12, a transmission unit 90 of the existing non-contact transmission device includes a transmission shaft 92, a magnet 94, and a fixed nut 96, wherein the transmission shaft 92 has a base 922 and a base 922 Extended shaft portion 924, the magnet 94 is sleeved on the shaft portion 924, and the fixing nut 96 is locked on the shaft portion 924 and abuts against the magnet 94, and the magnet 94 can be driven by magnetic force The transmission shaft 92 rotates.

However, in order to make the magnet 94 smoothly drive the transmission shaft 92 to rotate, the fixed nut 96 must be tightly locked on the transmission shaft 92, so that the fixed nut 96 is easy to rub against the magnet 94 to produce metal particles when locked. Then affect the air quality in the clean room. In addition, when the fixing nut 96 is tightly locked on the transmission shaft 92, it is easy to cause the magnet 94 to be broken due to too tight locking. Therefore, the non-contact transmission unit 90 Particles affecting air quality are easily produced by friction, and the magnet 94 is easily damaged.

Utility model content

The main purpose of the utility model is to provide a non-contact transmission unit, which is less likely to produce particles after friction and is not easily damaged.

In order to achieve the above purpose, a non-contact transmission unit provided by the utility model is characterized in that it includes:

a fixed shaft with a slope;

a magnetic ring sleeved on the fixed shaft, the inner peripheral surface of the magnetic ring and the slope of the fixed shaft form a slot;

An urging member, the inner peripheral surface of which is inclined, the urging member is arranged in the slot of the fixed shaft, so that the inner peripheral surface of the urging member abuts against the inclined surface of the fixed shaft; and

A fixing part used for resisting the pressing part is arranged on the fixing shaft.

In a preferred embodiment of the present invention, the fixed shaft has a base for abutting against one side of the magnetic ring.

In a preferred embodiment of the present invention, the fixed shaft has a first shaft extending from the base and a second shaft extending from the first shaft, the second shaft The portion extends obliquely from the first shaft portion, so that the outer peripheral surface of the second shaft portion forms the slope.

In a preferred embodiment of the present invention, the fixed shaft has a third shaft portion extending from the second shaft portion, and the outer peripheral surface of the third shaft portion has threads.

In a preferred embodiment of the present invention, the pressing member has a first tooth portion, and the fixing member has a second tooth portion on the side opposite to the first tooth portion, and the second tooth portion can be fit in the first tooth portion.

In a preferred embodiment of the present invention, the fixing shaft, the resisting member, and the fixing member are made of plastic material.

In a preferred embodiment of the present invention, the fixing member is a nut.

In a preferred embodiment of the present invention, the outer peripheral surface of the fixing member is hexagonal.

In a preferred embodiment of the present invention, wherein the first shaft part has two side faces, the inner peripheral surface of the magnetic ring has two side faces corresponding to the side faces of the first shaft part, whereby the magnetic ring When sleeved on the first shaft part, the magnetic ring cannot rotate on the spot.

In a preferred embodiment of the present invention, the outer peripheral surface of the pressing member has two side surfaces corresponding to the side surfaces of the magnetic ring, so that the pressing member can be embedded in the inner peripheral surface of the magnetic ring.

Description of drawings

The following preferred embodiments are listed below in conjunction with the accompanying drawings, in order to describe the structure and effect of the present utility model in detail; wherein the drawings used are first briefly described as follows:

Fig. 1 is the front view of a preferred embodiment of the utility model;

Fig. 2 is a sectional view along line 2-2 in Fig. 1;

Fig. 3 is a combined schematic diagram of a preferred embodiment of the present invention.

Fig. 4 is a front view of the fixed shaft provided by a preferred embodiment of the present invention;

Fig. 5 is a side view of Fig. 4;

Fig. 6 is a front view of the magnetic ring provided by a preferred embodiment of the present invention;

Fig. 7 is a side view of Fig. 6;

Fig. 8 is a front view of the urging member provided by a preferred embodiment of the present invention;

Fig. 9 is a side view of Fig. 8;

Fig. 10 is a front view of a fixing member provided by a preferred embodiment of the present invention;

Figure 11 is a side view of Figure 10; and

Fig. 12 is a combined schematic diagram of a conventional non-contact transmission unit.

Detailed ways

Please refer to FIG. 1 to FIG. 3 , the non-contact transmission unit 10 provided by a preferred embodiment of the present invention includes a fixed shaft 20 , a magnetic ring 30 , a pressing member 40 , and a fixing member 50 .

As shown in FIGS. 4 and 5 , the fixed shaft 20 is made of plastic material. The fixed shaft 20 has a substantially circular base 22 , a first shaft 24 extending integrally from the base 22 , A second shaft portion 26 extending integrally from the first shaft portion 24, and a third shaft portion 28 integrally extending from the second shaft portion 26, wherein the first shaft portion 24 has two mutually parallel The side surface 242 of the second shaft part 26 extends obliquely from the first shaft part 24, so that the outer peripheral surface of the second shaft part 26 forms a slope 262, and the outer peripheral surface of the third shaft part 28 is Has thread.

As shown in Figures 6 and 7, the magnetic ring 30 is sheathed on the first shaft portion 24 and the second shaft portion 26, and one side of the magnetic ring 30 is against the base 22, the magnetic ring The outer peripheral surface of 30 is circular, and its inner peripheral surface has two side surfaces 32 corresponding to the side surfaces 242 of the first shaft part 24, so that when the magnetic ring 30 is sleeved on the first shaft part 24, the magnetic The ring 30 can be fixed on the first shaft portion 24 without rotating in situ. In addition, when the magnetic ring 30 is sleeved on the second shaft portion 26, the inner peripheral surface of the magnetic ring 30 is in contact with the second shaft. An embedded groove 34 is formed on the outer peripheral surface of the portion 26 .

As shown in Fig. 8 and Fig. 9, the urging member 40 is made of plastic material, the urging member 40 is sleeved on the second shaft portion 26, and embedded in the embedded groove 34, the urging member 40 The outer peripheral surface 42 of the pressing member 40 has two side surfaces 422 corresponding to the side surfaces 32 of the magnetic ring 30, the inner peripheral surface 44 of the pressing member 40 is inclined, and the inner peripheral surface 44 of the pressing member 40 The inclination direction is the same as the inclination direction of the inclined surface 262 of the second shaft portion 26, so that when the pressing member 40 is embedded in the embedded groove 34, the inner peripheral surface 44 of the pressing member 40 is in contact with the first In addition, one side of the pressing member 40 protrudes from the magnetic ring 30 , and one side of the pressing member 40 protruding from the magnetic ring 30 has a first tooth portion 46 .

As shown in Figures 10 and 11, the fixing member 50 is a nut made of plastic material, the outer peripheral surface of the fixing member 50 is hexagonal, and the inner peripheral surface of the fixing member 50 has the same shape as the first The corresponding thread on the outer peripheral surface of the triaxial part 28 makes the fixing part 50 screwable on the third shaft part 28. In addition, the side of the fixing part 50 opposite to the pressing part 40 has a second tooth part 52 , the second tooth portion 52 can engage with the first tooth portion 46 , so that the fixing member 50 can abut against the pressing member 40 .

When the user wants to combine the non-contact transmission unit 10 provided by the present utility model, as shown in FIG. The base 22 is then embedded with the pressing member 40 in the slot 34 along the outer peripheral surface of the second shaft portion 26 . At this time, the pressing member 40 has one side of the first tooth portion 46 It protrudes from the magnetic ring 30, and then the fixing member 50 is screwed and locked on the third shaft portion 28, so that the second tooth portion 52 fits in the first tooth portion 46, so that the fixing member 50 can be Press against the pressing member 40, so that the combination of the non-contact transmission unit 10 provided by the utility model is completed; since the fixed shaft 20, the pressing member 40, and the fixing member 50 are all made of plastic material It is made so that when the fixing piece 50 is locked on the third shaft portion 28, particles affecting the air quality are not likely to be generated between the fixing piece 50 and the pressing piece 40 due to friction. In addition, the pressing piece 40 The magnetic ring 30 is tightly pressed against the magnetic ring 30 by the abutment of the fixing member 50, so that the magnetic ring 30 is fixed on the fixed shaft 20, and the magnetic ring 30 is not easy to be broken due to the locking of the fixing member 50 too tightly .

Therefore, the non-contact transmission unit 10 provided by the present invention is less likely to affect the quality of the air, and the magnetic ring 30 is less likely to be damaged.

Claims (10)

1. a contactless gear unit is characterized in that, includes:

One fixed axis has an inclined-plane;

One magnetic rings is sheathed on this fixed axis, and the inner peripheral surface of this magnetic rings and the inclined-plane of this fixed axis form a caulking groove;

One forcing piece, inner circumferential surface are skewed, and this forcing piece is located at the caulking groove of fixed axis, make the inner peripheral surface of this forcing piece be connected to the inclined-plane of this fixed axis; And

One in order to replace the fixture of this forcing piece, is located at this fixed axis.

2. according to the described contactless gear unit of claim 1, it is characterized in that, wherein this fixed axis have one for a side of this magnetic rings against base portion.

3. according to the described contactless gear unit of claim 2, it is characterized in that, wherein this fixed axis has the second axle part that a first axle part that is extended by this base portion and is extended by this first axle part, this the second axle part is extended by this first axle part obliquely, makes the outer peripheral face of this second axle part form this inclined-plane.

4. according to the described contactless gear unit of claim 3, it is characterized in that wherein this fixed axis has the 3rd axial region that is extended by this second axle part, the outer peripheral face of the 3rd axial region has screw thread.

5. according to the described contactless gear unit of claim 1, it is characterized in that wherein this forcing piece has one first tooth portion, this fixture has one second tooth portion with respect to a side of this first tooth portion, and this second tooth portion can chimeric this first tooth portion.

6. according to the described contactless gear unit of claim 1, it is characterized in that, wherein this fixed axis, this forcing piece, and this fixture is made by plastic material.

7. according to the described contactless gear unit of claim 1, it is characterized in that wherein this fixture is to be nut.

8. according to the described contactless gear unit of claim 7, it is characterized in that wherein the outer peripheral face of this fixture is to be hexagon.

9. according to the described contactless gear unit of claim 3, it is characterized in that wherein this first axle part has two side faces, the inner peripheral surface of this magnetic rings have two with the corresponding side, side of this first axle part.

10. according to the described contactless gear unit of claim 9, it is characterized in that, wherein the outer peripheral face of this forcing piece have two with the corresponding side, side of this magnetic rings, make that this forcing piece is the inner peripheral surface that can be embedded at this magnetic rings.

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