CN212250989U - Reducer and shaft - Google Patents

Abstract

The present invention provides a rotating shaft, which is applied to a reducer and connected to a main shaft. The rotating shaft is provided with a fixing ring which can be detachably mounted thereon and comprises a shaft body, a flange, a center hole and at least one groove. The shaft body comprises a first end and a second end, and the second end is arranged opposite to the first end. The flange is located at the second end and protrudes radially outward from the shaft body. The center hole is arranged in the shaft body and is provided for the main shaft to be inserted therein. The groove is located at the second end, and the groove is axially opened in the shaft body and is connected to the center hole. The main shaft is inserted into the center hole from the second end, and the fixing ring is mounted on the second end to tighten the main shaft, and the fixing ring is axially limited by the flange. In this way, the fixing ring can be prevented from falling off the rotating shaft during the assembly process of the reducer.

Description

Reducer and shaft

technical field

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

Background technique

There are many ways to output torque of the lifting 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 unbearable. Changes to reduce its service life, although the material or specifications of the transmission structure can be replaced, the cost will also be relatively increased, and increasing the input power source will also mean an increase in energy consumption.

In the case of not 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 diameter of the input end wheel, increasing the output end wheel diameter, etc., if the structural strength allows Within the range, users can replace the transmission structure with different gear ratios according to their needs to achieve the desired output torque.

Accordingly, various reducers have been developed to meet such needs. The reducer is a precision mechanism that is matched with many gears. According to different input sources and output mechanisms, different configurations are also derived, including gear reducers, worm gear reducers, planetary reducers, vertical reducers and Horizontal 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, no need to calculate by themselves. Structural strength or waste of time assembling parts, thus greatly improving ease of use.

However, with the increase in the application opportunities of various reducers, the relevant industry must increase the production capacity of the reducers to meet the market demand while maintaining good quality. Generally speaking, the reducer is equipped with a fixing ring, the purpose of which is to tighten the main shaft when the motor main shaft and the reducer are combined to achieve a close arrangement of the two. However, when the assembly factory purchases the reducer from the reducer manufacturer and assembles it, the fixing ring needs to be loosened so that the motor main shaft can be inserted into the rotating shaft of the reducer. This method is easy to cause the fixing ring to fall off and lose.

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

Utility model content

According to an embodiment of the present invention, there is provided a rotating shaft, which is applied to a reducer and is connected to a main shaft. The rotating shaft is detachably sleeved by a fixing ring and includes a shaft body, a flange, a center hole and at least one cut 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 at least one cut groove is located at the second end, and the at least one cut groove is axially opened on the shaft body and communicated with the central hole. 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 limited by the flange.

Thereby, the groove allows the second end of the shaft body to deform radially to reduce its center hole, and the structural arrangement of the flange can prevent the fixed ring from being displaced from the shaft due to axial displacement, thereby avoiding the loss of the fixed ring.

The shaft according to the foregoing embodiment, wherein the flange may include a chamfer, which is remote from the fixing ring.

According to the rotating shaft of the foregoing embodiment, the number of the at least one slit can be three, and the three slits are spaced around the central hole.

According to the rotating shaft of the foregoing embodiment, it may further include a convex ring, which radially protrudes from the shaft body and includes a bearing surface facing the second end, a limiting groove is formed between the convex ring and the flange, and the bearing surface is for the fixed ring to abut against. top, and the fixing ring is limited to the limiting groove.

According to an embodiment of the present invention, a reducer is provided, which is connected to the 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 cut 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 arranged on the shaft body and is used for the main shaft to be inserted, and the at least one slit is located at the second end, The aforesaid at least one sectional groove is axially opened on the shaft body and communicated with the central hole. The sun gear is at the first end. The aforementioned plurality of planetary gears are meshed with the sun gear. The fixing ring is detachably sleeved on the second end of the rotating shaft. 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 limited by the flange.

According to the speed reducer of the foregoing embodiment, wherein the fixing ring may further comprise a main body, a shaft hole and a slot. The shaft hole axially penetrates the main body and is used for inserting the rotating shaft. 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 compresses the rotating shaft.

According to the speed reducer of the foregoing embodiment, wherein the flange may include a chamfer, which is remote from the fixing ring.

According to the speed reducer of the aforementioned embodiment, the number of the at least one cut groove is three, and the three cut grooves are spaced around the central hole.

According to the speed reducer of the foregoing embodiment, the rotating shaft may further include a convex ring, which radially protrudes from the shaft body and includes a bearing surface facing the second end, a limiting groove is formed between the convex ring and the flange, and the bearing surface is used for fixing The ring abuts against the top, and the fixing ring is limited to the limiting groove.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of a reducer according to an embodiment of the present invention;

FIG. 2 is a partial exploded view of the reducer of the embodiment of FIG. 1;

FIG. 3 is a three-dimensional schematic diagram of the rotating shaft and the fixing ring of the embodiment of FIG. 1;

FIG. 4 is a side view of the rotating shaft of the embodiment of FIG. 1;

FIG. 5 is a schematic perspective view of the fixing ring of the embodiment of FIG. 1; and

FIG. 6 is a schematic cross-sectional view of the rotating shaft and the fixing ring of the embodiment of FIG. 3 along the section line 6-6.

Detailed ways

Embodiments of the present invention will be described below with reference to the accompanying drawings. For the sake of clarity, many practical details are set forth in the following description. The reader should understand, however, that these practical details should not limit the invention. That is, in some embodiments of the novel, these practical details are unnecessary. Furthermore, for the purpose of simplifying the drawings, some well-known and conventional structures and elements will be shown in the drawings in a simplified and schematic manner; and repeated elements will possibly be designated by the same or similar numerals.

In addition, when a certain element (or mechanism or module, etc.) is "connected", "arranged" or "coupled" to another element herein, it may mean that the element is directly connected, directly arranged or directly coupled to the other element, It may also mean that an element is indirectly connected, indirectly arranged or indirectly coupled to another element, that is, there is another element interposed between the element and the other element. When it is expressly stated that an element is "directly connected", "directly arranged" or "directly coupled" to another element, it means that no other element is interposed between the said element and the other element. The terms first, second, and third are only used to describe different elements or components, and do not limit the elements/components themselves. Therefore, the first element/component may also be referred to as the second element/component. And the combination of elements/components/mechanisms/modules in this article is not a generally well-known, conventional or well-known combination in this field, and it cannot be determined whether the combination relationship is easy based on whether the components/components/mechanisms/modules themselves are well-known. It can be easily accomplished by those skilled in the art.

Please refer to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , wherein FIG. 1 shows a three-dimensional schematic diagram of a reducer 10 according to an embodiment of the present invention; FIG. 2 shows a partial explosion of the reducer 10 of the embodiment of FIG. 1 3 is a schematic perspective view of the rotating shaft 100 and the fixing ring 400 of the embodiment of FIG. 1 ; FIG. 4 is a side view of the rotating shaft 100 of the embodiment of FIG. 1 . 1 and 2 , the reducer 10 is connected to the 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 . 3 and 4, the rotating shaft 100 can be connected with the main shaft and includes a shaft body 110, a flange 120, a central hole 130 and at least one groove 140. The shaft body 110 includes a first end 111 and a second end 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 and is used for the main shaft to be inserted, the cut groove 140 is located at the second end 112 , and the cut groove 140 is axially opened on the shaft body 110 And communicate with the central hole 130 . The sun gear 200 is located at the first end 111 , and the planetary gears 300 are engaged with the sun gear 200 . By changing the ratio of the teeth between the two, the torque from the power source can be converted in a certain proportion and then 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 limited by the flange 120 .

Thereby, the slit 140 enables the second end 112 of the shaft body 110 to deform in the radial direction to reduce the central hole 130 thereof. The structural arrangement of the flange 120 can prevent the fixing ring 400 from falling off the shaft 100 due to axial displacement, preventing the Loss of retaining ring 400.

Specifically, the second end 112 and the first end 111 of the rotating shaft 100 can be used to connect the main shaft and the driven mechanism, respectively. And as shown in FIG. 3 , the number of the grooves 140 of the rotating shaft 100 can be three, and the three grooves 140 are spaced around the central hole 130 and pass through the shaft wall in the radial direction to communicate with the central hole 130 . When the second end 112 is pressed by the fixing ring 400 , its force can be evenly distributed on the shaft body 110 , so that all parts of the shaft wall of the shaft body 110 can be compressed inward by an equal amount of deformation, ensuring that the rotating shaft 100 and the main shaft can be coaxially Hearts are connected and tightly bound. Of course, the number of the slits 140 and the length of the grooves 140 extending in the axial direction can be changed according to actual needs, and the present invention is not limited thereto.

As shown in FIG. 4 , the rotating shaft 100 may further include a convex ring 150 , which radially protrudes from the shaft body 110 and includes a bearing surface 160 facing the second end 112 , a limiting groove 170 is formed between the convex ring 150 and the flange 120 , The bearing surface 160 can be used for one side of the fixing ring 400 to abut against in the axial direction, and the fixing ring 400 can be limited to the limiting groove 170 . The bearing surface 160 provides a limit to prevent the fixing ring 400 from displacing toward the first end 111 , and the flange 120 can provide a limit 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 restraint on both sides.

Please refer to FIG. 5 , and please refer to FIG. 4 , wherein FIG. 5 is a three-dimensional schematic diagram of the fixing ring 400 of the embodiment of FIG. 1 . As can be seen from FIG. 5 , 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 is used for inserting the rotating shaft 100 . 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 .

Specifically, the fixing ring 400 may further include a pressing mechanism 440 , such as bolts and threads, fasteners or hooks, etc., disposed on both sides or around the slot 430 of the main body 410 , by adjusting the pressing mechanism The second end 112 of the shaft body 110 can be radially deformed to reduce the central hole 130 of the shaft body 110 in order to reduce the slot 430 , so that the main shaft can be pressed against the rotating shaft 100 .

Please refer to FIG. 6 , and please refer to FIG. 5 , wherein FIG. 6 is a schematic cross-sectional view of the rotating shaft 100 and the fixing ring 400 of the embodiment of FIG. 3 along the section line 6 - 6 . The flange 120 may include a chamfer 121 away from the fixing ring 400 . The chamfer 121 is a bevel structure with a gradually expanding diameter of the flange 120 from the second end 112 toward the first end 111 in the axial direction, so that the fixing ring 400 can be The second end 112 of the rotating shaft 100 is sleeved more smoothly during initial installation. Although the angle and relative dimensions of the chamfer 121 can be changed according to actual requirements, the present invention is not limited thereto.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. The scope of protection shall be defined by the appended claims.

【Symbol Description】

10: Reducer

100: Spindle

110: Shaft body

111: First End

112: Second End

120: Flange

121: Chamfer

130: Center hole

140: Cut trench

150: convex ring

160: bearing surface

170: Limit slot

200: sun gear

300: Planetary gear

400: fixing ring

410: Subject

420: Shaft hole

430: Slotted

440: Press agency.

Claims (10)

1. A rotating shaft, applied to a reducer and connected to a main shaft, the rotating shaft is detachably sleeved for a fixing ring and is characterized in that comprising: Axle, including: the first end; and The second end is opposite to the first end; a flange, located at the second end and protruding radially outward from the shaft body; a center hole, which is arranged on the shaft body and is used for the spindle to be inserted; and at least one cut groove, located at the second end, the at least one cut 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 press the main shaft, and the fixing ring is axially limited by the flange. 2. The shaft of claim 1, wherein the flange comprises: Chamfer away from this retaining ring. 3 . The rotating shaft of claim 1 , wherein the number of the at least one cut groove is three, and the three cut grooves are spaced around the central hole. 4 . 4. The rotating shaft of claim 1, wherein, further comprising: a convex ring, radially protruding from the shaft body and including a bearing surface facing the second end, a restriction groove is formed between the convex ring and the flange, the bearing surface is for the fixing ring to abut against, and the fixing ring confined to the confinement slot. 5. A reducer, connected to the main shaft and characterized by comprising: 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 center hole, which is arranged on the shaft body and is used for the main shaft to be inserted; and at least one cut groove, located at the second end, the at least one cut groove is axially opened on the shaft body and communicated with the central hole; a sun gear at the first end; a plurality of planetary gears meshing with the sun gear; and a fixing ring, which 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 presses the main shaft, and the fixing ring is axially limited by the flange. 6. The reducer of claim 5, wherein the fixing ring further comprises: main body; a shaft hole, which axially penetrates the main body and is inserted into the rotating shaft; and A slot is opened in the main body to make the main body form a C-shaped structure. 7. The reducer of claim 6, wherein the fixing ring further comprises: The pressing mechanism is arranged on the main body to reduce the slot so that the inner wall of the fixing ring can press the rotating shaft. 8. The reducer of claim 6, wherein the flange comprises: Chamfer away from this retaining ring. 9 . The reducer of claim 6 , wherein the number of the at least one cut groove is three, and the three cut grooves are spaced around the central hole. 10 . 10. The reducer of claim 6, wherein the shaft further comprises: a convex ring, radially protruding from the shaft body and including a bearing surface facing the second end, a restriction groove is formed between the convex ring and the flange, the bearing surface is for the fixing ring to abut against, and the fixing ring confined to the confinement slot.

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