TWM611075U - Speed reducer and rotating shaft - Google Patents

Abstract

The model provides a rotating shaft, which is applied to a reducer and connected to a main shaft. The rotating shaft is detachably sleeved with a fixed ring and includes a shaft body, a flange, a central hole and at least one slit groove. The shaft body includes a first end and a second end, and the second end is opposite to the first end. The flange is located at the second end and protrudes radially outward from the shaft body. The central hole is arranged on the shaft body and is used for the main shaft to be inserted. The section groove is located at the second end, and the section groove is axially opened on the shaft body and communicated with the central hole. Wherein, the main shaft is inserted into the central hole from the second end, the fixing ring is sleeved on the second end to tighten the main shaft, and the fixing ring is axially restricted by the flange. Thereby, the fixed ring can be prevented from falling off from the rotating shaft during the assembling process of the reducer.

Description

Reducer and shaft

The new model relates to a speed reducer and a rotating shaft, and particularly relates to a speed reducer and a rotating shaft which can prevent the fixed ring of the speed reducer from falling off from the rotating shaft.

There are many ways to increase the output torque of the mechanism. Among them, increasing the input power source is a more direct way, such as replacing a high-power motor, etc. However, increasing the input power source may cause the strength of the original transmission structure to be unable to withstand changes. To reduce its service life, although the material or specifications of the transmission structure can be replaced, the cost will be relatively increased, and increasing the input power source also means an increase in energy consumption.

Without changing the input power source, changing the ratio of torque transmission between the input end and the output end has become a practical way, for example: reducing the input end wheel diameter, increasing the output end wheel diameter, etc., within the allowable range of structural strength Inside, users can change transmission structures with different gear ratios according to their needs to achieve the desired output torque.

Accordingly, various reducers have been developed to meet such demands. The reducer is a precision mechanism that uses many gears to match each other. Different configurations are derived from different input sources and output mechanisms, including gear reducers, worm gear reducers, planetary reducers, vertical reducers, and horizontal reducers. Type reducer, etc., and the structure of various applications has now been modularized. Users can evaluate the actual application conditions such as input power source and output structure to select the most suitable type and specification of reducer, without having to calculate the structure by themselves. Strength or wasting time to assemble parts, thus greatly improving the convenience of use.

However, with the increase in opportunities for the use of various reducers, relevant industries must increase the production capacity of reducers to meet market demand while maintaining good quality. Generally speaking, the speed reducer is equipped with a fixed ring, the purpose of which is to tighten the main shaft when the motor main shaft and the reducer are combined, so as to achieve a close arrangement of the two. However, when the assembly plant purchases the reducer from the reducer manufacturer and assembles it, it is necessary to loosen the fixing ring first so that the motor spindle can be inserted into the shaft of the reducer. This method can easily cause the fixing ring to fall off and be lost.

In view of this, how to prevent the fixed ring of the reducer from falling off and losing has become the goal of the relevant industry's efforts.

According to an embodiment of the present invention, there is provided a rotating shaft applied to a reducer and connected to a main shaft. The rotating shaft is detachably sleeved with a fixed ring and includes a shaft body, a flange, a central hole and at least one slit. The shaft body includes a first end and a second end, and the second end is opposite to the first end. The flange is located at the second end and protrudes radially outward from the shaft body. The central hole is arranged on the shaft body and is used for the main shaft to be inserted. The aforementioned at least one cutaway groove is located at the second end, and the aforementioned at least one cutaway groove is axially opened on the shaft body and communicated with the central hole. Wherein, the main shaft is inserted into the central hole from the second end, the fixing ring is sleeved on the second end to tighten the main shaft, and the fixing ring is axially restricted by the flange.

Thereby, the groove is cut so that the second end of the shaft can be deformed in the radial direction to reduce the central hole. The structure of the flange can prevent the fixing ring from being displaced in the axial direction and falling off the shaft, and avoiding the loss of the fixing ring.

According to the rotating shaft of the foregoing embodiment, the flange may include a chamfer that is away from the fixing ring.

According to the rotating shaft of the foregoing embodiment, the number of at least one groove can be three, and the three grooves surround the central hole at intervals.

According to the rotating shaft of the foregoing embodiment, it may further include a convex ring that protrudes radially from the shaft body and includes a bearing surface facing the second end. A restricting groove is formed between the convex ring and the flange, and the bearing surface provides The fixing ring abuts against the top, and the fixing ring is limited in the restricting groove.

According to an embodiment of the present invention, a reducer is provided, which is connected to a main shaft and includes a rotating shaft, a sun gear, a plurality of planetary gears, and a fixed ring. The rotating shaft is connected with the main shaft and includes a shaft body, a flange, a central hole and at least one section groove. The shaft body includes a first end and a second end. The flange is located at the second end and protrudes radially outward from the shaft body. The central hole is provided on the shaft body for the spindle to be inserted into. The aforementioned at least one slit is located at the second end. At the end, the aforementioned at least one section groove is axially opened on the shaft body and communicated with the central hole. The sun gear is located at the first end. The aforementioned plural planetary gears mesh with the sun gear. The fixing ring is detachably sleeved on the second end of the rotating shaft. Wherein, the main shaft is inserted into the central hole from the second end, the fixing ring is pressed against the main shaft, and the fixing ring is axially restricted by the flange.

According to the reducer of the aforementioned embodiment, the fixing ring may further include a main body, a shaft hole and a slot. The shaft hole axially penetrates the main body and allows the rotating shaft to be inserted. The slot is opened in the main body so that the main body forms a C-shaped structure.

According to the speed reducer of the aforementioned embodiment, the fixing ring may further include a pressing mechanism, which is arranged on the main body to reduce the slot, so that the inner wall of the fixing ring is pressed against the rotating shaft.

According to the reducer of the aforementioned embodiment, the flange may include a chamfer that is away from the fixing ring.

According to the reducer of the aforementioned embodiment, the number of at least one groove is three, and the three grooves surround the central hole at intervals.

According to the reducer of the foregoing embodiment, the rotating shaft may further include a convex ring that protrudes radially from the shaft body and includes a bearing surface facing the second end, and a restricting groove is formed between the convex ring and the flange to support The surface is supported by the fixed ring, and the fixed ring is limited in the restricting groove.

The embodiments of the present invention will be described below with reference to the drawings. For the sake of clarity, many practical details will be explained in the following description. However, the reader should understand that these practical details should not be used to limit the present model. In other words, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplification of the drawings, some conventionally used structures and elements will be drawn in a simple schematic manner in the drawings; and repeated elements may be represented by the same or similar numbers.

In addition, when a component (or mechanism or module, etc.) is “connected”, “configured” or “coupled” to another component in this document, it can mean that the component is directly connected, directly disposed, or directly coupled to another component It can also mean that an element is indirectly connected, indirectly disposed, or indirectly coupled to another element, that is, there are other elements between the element and another element. When it is clearly stated that a certain element is "directly connected", "directly arranged" or "directly coupled" to another element, it means that there is no other element between the element and another element. The terms first, second, third, etc. are only used to describe different elements or components, and there are no restrictions on the elements/components themselves. Therefore, the first element/component can also be referred to as the second element/component. And the combination of components/components/mechanisms/modules in this article is not a combination of general well-known, conventional or conventional in this field. Whether the components/components/mechanisms/modules themselves are conventional or not can not be used to determine whether the combination relationship is It can be easily completed by ordinary knowledgeable persons in the technical field.

Please refer to FIG. 1, FIG. 2, FIG. 3, and FIG. 4. In which, FIG. 1 is a three-dimensional schematic diagram of a reducer 10 according to an embodiment of the present invention; FIG. 2 is a diagram of the embodiment in FIG. A partial exploded view of the reducer 10; Fig. 3 shows a perspective view of the shaft 100 and the fixed ring 400 of the embodiment in Fig. 1; Fig. 4 shows a side view of the shaft 100 of the embodiment in Fig. 1. It can be seen from FIGS. 1 and 2 that the reducer 10 is connected to a main shaft (not shown) and includes a rotating shaft 100, a sun gear 200, a plurality of planetary gears 300 and a fixed ring 400. It can be seen from Figures 3 and 4 that the rotating shaft 100 can be connected to the main shaft and includes a shaft body 110, a flange 120, a central hole 130 and at least one section groove 140. The shaft body 110 includes a first end 111 and a first end 111 Two ends 112, the flange 120 is located at the second end 112 and protrudes radially outward from the shaft body 110, the central hole 130 penetrates the shaft body 110 for the main shaft to be inserted, the slit 140 is located at the second end 112, and the slit 140 shaft The direction is opened on the shaft 110 and communicated with the central hole 130. The sun gear 200 is located at the first end 111, and the plural planetary gears 300 are meshed with the sun gear 200. By changing the ratio of the number of teeth between the two, the torque from the power source can be converted to a certain ratio before being transmitted to the output end. The fixing ring 400 is detachably sleeved on the second end 112 of the rotating shaft 100. The main shaft is inserted into the central hole 130 from the second end 112, the fixing ring 400 can press the main shaft, and the fixing ring 400 is axially restricted by the flange 120.

Thereby, the slit 140 allows the second end 112 of the shaft 110 to be deformed in the radial direction to reduce the central hole 130. The structure of the flange 120 can prevent the fixing ring 400 from being displaced in the axial direction and falling off the shaft 100. The fixing ring 400 is missing.

In detail, the second end 112 and the first end 111 of the rotating shaft 100 can be used to connect the main shaft and a driven mechanism, respectively. And as shown in Figure 3, the number of slits 140 of the shaft 100 can be three, and the three slits 140 surround the central hole 130 at intervals, penetrate the shaft wall in the radial direction and communicate with the central hole 130, when the shaft 110 When the second end 112 of the shaft is tightened by the fixing ring 400, the force can be evenly distributed on the shaft 110, so that the shaft wall of the shaft 110 can be compressed inward with equal deformation, ensuring that the shaft 100 and the main shaft can be coaxial The heart is connected and tightly bound. Of course, the number of slits 140 and the length of the grooves 140 extending in the axial direction can be changed according to actual requirements, and the present invention is not limited by this.

As shown in Fig. 4, the rotating shaft 100 may further include a convex ring 150, which protrudes radially from the shaft 110 and includes a bearing surface 160 facing the second end 112. Between the convex ring 150 and the flange 120, a convex ring 150 is formed. The restricting groove 170 and the bearing surface 160 can allow one side of the fixing ring 400 to abut against in the axial direction, and the fixing ring 400 can be restricted in the restricting groove 170. The bearing surface 160 provides a restriction to prevent the fixing ring 400 from displacing toward the first end 111, and the flange 120 can provide a restriction on the other side of the fixing ring 400 to limit the axial displacement of the fixing ring 400 toward the second end 112. The fixing ring 400 is effectively positioned by the axial restriction on both sides.

Please refer to FIG. 5, and also refer to FIG. 4, where FIG. 5 is a perspective view of the fixing ring 400 of the embodiment in FIG. 1. It can be seen from FIG. 5 that the fixing ring 400 may further include a main body 410, a shaft hole 420 and a slot 430. The shaft hole 420 axially penetrates the main body 410 and allows the rotation shaft 100 to be inserted. The slot 430 is opened in the main body 410 so that the main body 410 forms a C-shaped structure. The size of the shaft hole 420 can be changed by changing the size of the slot 430.

In detail, the fixing ring 400 may further include a tightening mechanism 440, such as bolts and threads, fasteners or hooks, etc., which are arranged on both sides or the periphery of the slot 430 of the main body 410, by adjusting the tightening mechanism 440 is used to reduce the slot 430, so the second end 112 of the shaft body 110 can be deformed in the radial direction to reduce the central hole 130 by cooperating with the slit 140, and then the main shaft is pressed against the rotating shaft 100.

Please refer to Fig. 6 and Fig. 5 together. Fig. 6 is a schematic cross-sectional view of the rotating shaft 100 and the fixing ring 400 of the embodiment in Fig. 3 along the cutting plane line 6-6. The flange 120 may include a chamfer 121 that is far away from the fixing ring 400. The chamfer 121 is a bevel structure with a gradually expanding diameter from the second end 112 to the first end 111 in the axial direction of the flange 120, so that the fixing ring 400 is more smoothly sleeved on the second end 112 of the rotating shaft 100 during initial installation. However, the angle and related dimensions of the chamfer 121 can be changed according to actual requirements, which does not limit the present invention.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be subject to the definition of the attached patent application scope.

10: reducer 100: shaft 110: Shaft 111: first end 112: second end 120: flange 121: chamfer 130: Center hole 140: ditch 150: convex ring 160: bearing surface 170: limit slot 200: Sun gear 300: Planetary gear 400: fixed ring 410: Subject 420: Shaft hole 430: slot 440: Urgent Organization

Figure 1 shows a three-dimensional schematic diagram of a reducer according to an embodiment of the present invention; Figure 2 shows a partial exploded view of the reducer of the embodiment in Figure 1; Figure 3 is a perspective schematic view of the rotating shaft and the fixing ring of the embodiment in Figure 1; Figure 4 shows a side view of the shaft of the embodiment shown in Figure 1; Fig. 5 is a perspective view of the fixing ring of the embodiment in Fig. 1; and Fig. 6 is a schematic cross-sectional view of the rotating shaft and the fixed ring of the embodiment in Fig. 3 along the cutting plane line 6-6.

100: shaft

110: Shaft

120: flange

130: Center hole

140: ditch

400: fixed ring

410: Subject

440: Urgent Organization

Claims (10)

A rotating shaft is applied to a reducer and connected to a main shaft. The rotating shaft is detachably sleeved with a fixed ring and includes: One-axis body, including: A first end; and A second end, which is arranged opposite to the first end; A flange located at the second end and protruding radially outward from the shaft body; A central hole provided on the shaft body for the main shaft to be inserted; and At least one cutaway groove located at the second end, the at least one cutaway groove is axially opened on the shaft body and communicated with the central hole; Wherein, the main shaft is inserted into the central hole from the second end, the fixing ring is sleeved on the second end to tighten the main shaft, and the fixing ring is axially restricted by the flange. The shaft according to claim 1, wherein the flange includes: A chamfer, away from the fixed ring. The rotating shaft according to claim 1, wherein the number of the at least one slit is three, and the three slits surround the central hole at intervals. The shaft as described in claim 1, further including: A convex ring protrudes radially from the shaft body and includes a bearing surface facing the second end, a restricting groove is formed between the convex ring and the flange, and the bearing surface is supported by the fixing ring, and The fixed ring is restricted to the restricting groove. A reducer connected to a main shaft and containing: A rotating shaft connected to the main shaft and containing: A shaft body including a first end and a second end; A flange located at the second end and protruding radially outward from the shaft body; A central hole arranged on the shaft body for the main shaft to be inserted; and At least one cutaway groove located at the second end, the at least one cutaway groove is axially opened on the shaft body and communicated with the central hole; A sun gear located at the first end; A plurality of planetary gears are meshed with the sun gear; and A fixing ring detachably sleeved on the second end of the rotating shaft; Wherein, the main shaft is inserted into the central hole from the second end, the fixing ring presses the main shaft, and the fixing ring is axially restricted by the flange. The reducer according to claim 5, wherein the fixed ring further includes: A subject A shaft hole axially penetrates the main body and allows the shaft to be inserted; and A slot is opened in the main body so that the main body forms a C-shaped structure. The reducer according to claim 6, wherein the fixed ring further includes: A pressing mechanism is arranged on the main body to reduce the slot so that an inner wall of the fixing ring presses the rotating shaft. The reducer according to claim 6, wherein the flange includes: A chamfer, away from the fixed ring. The speed reducer according to claim 6, wherein the number of the at least one slit is three, and the three slits surround the central hole at intervals. The reducer according to claim 6, wherein the shaft further includes: A convex ring protrudes radially from the shaft body and includes a bearing surface facing the second end, a restricting groove is formed between the convex ring and the flange, and the bearing surface is supported by the fixing ring, and The fixed ring is restricted to the restricting groove.

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