CN210949711U - Single-stage cycloidal speed reducer, mechanical transmission device and valve - Google Patents

Abstract

The utility model relates to a single-stage cycloidal reducer, mechanical transmission and valve, the single-stage cycloidal reducer includes casing and drive mechanism, drive mechanism sets up in the casing and includes eccentric shaft, swinging wheel, depolarization dish and the output shaft that connects gradually; one of the swinging wheel and the depolarization disc is provided with a first insertion block, the other one of the swinging wheel and the depolarization disc is provided with a first insertion slot, the first insertion block is inserted into the first insertion slot to realize the connection of the swinging wheel and the depolarization disc, and a radial gap exists between the first insertion slot and the first insertion block; similarly, one of the depolarization disc and the output shaft is provided with a second insertion block, the other one of the depolarization disc and the output shaft is provided with a second insertion slot, the second insertion block is inserted into the second insertion slot to realize the connection of the depolarization disc and the output shaft, and a radial gap exists between the second insertion slot and the second insertion block. The utility model discloses a single-stage cycloid reduction gear has small, compact structure, and the advantage that the drive ratio is big can be used on the car betterly to promote the passenger space of car.

Description

Single-stage cycloidal speed reducer, mechanical transmission device and valve

Technical Field

The utility model relates to a mechanical transmission technical field, concretely relates to single-stage cycloid reduction gear, mechanical transmission and valve.

Background

At present, with the popularization of the concept of minimizing the mechanical space and maximizing the occupied space, various automobile manufacturers are dedicated to developing miniaturized automobile parts. The speed reducer is a main component for reducing the rotating speed and increasing the torque in the automobile transmission system. For the current automobiles, in order to achieve a higher reduction ratio, a multi-stage transmission mechanism is often required, which results in a larger axial size of the speed reducer and is not beneficial to reducing the volume of the speed reducer. Therefore, it is necessary to provide a reduction gear which is small in size, compact in structure and capable of realizing a large transmission ratio, thereby saving an installation space and maximizing a passenger space in a vehicle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a single-stage cycloid reduction gear, mechanical transmission and valve, this single-stage cycloid reduction gear have realized realizing higher reduction ratio in lower axial height to can eliminate the vibration that the oscillating wheel brought, reduce the fluctuation of output rotational speed, the part is few moreover, and is with low costs.

In order to achieve the above object, the utility model provides a single-stage cycloidal reducer, which comprises a shell and a transmission mechanism arranged in the shell; the transmission mechanism comprises an eccentric shaft, a swinging wheel, a depolarization disc and an output shaft which are connected in sequence, and the swinging wheel is meshed with the shell part;

wherein: one of the swinging wheel and the depolarization disc is provided with a first insertion block, the other one of the swinging wheel and the depolarization disc is provided with a first insertion slot, the first insertion block is inserted into the first insertion slot, and a radial gap is formed between the first insertion slot and the first insertion block;

one of the depolarization disc and the output shaft is provided with a second insertion block, the other one of the depolarization disc and the output shaft is provided with a second insertion slot, the second insertion block is inserted into the second insertion slot, and a radial gap exists between the second insertion slot and the second insertion block.

Optionally, a counterweight is arranged on the eccentric shaft, and the counterweight is pressed against the swinging wheel.

Optionally, the wobble wheel has a first surface, the depolarizing disc has opposing second and third surfaces, the output shaft has a fourth surface; the first surface is disposed axially face-to-face with the second surface, and the third surface and the fourth surface are disposed axially face-to-face; one of the first surface and the second surface is provided with the first inserting block, and the other surface is provided with the first slot; one of the third surface and the fourth surface is provided with the second insert block, and the other is provided with the second slot.

Optionally, the first insert block and the second insert block both extend in a radial direction, and the first insert block and the second insert block are perpendicular to each other.

Optionally, the number of the first insertion blocks is two, and the two first insertion blocks are arranged on the same surface in a centrosymmetric manner, and/or the number of the second insertion blocks is two, and the two second insertion blocks are arranged on the same surface in a centrosymmetric manner.

Optionally, the first insert block is disposed on the first surface, the second insert block is disposed on the fourth surface, and the first slot and the second slot are both disposed on the depolarization disc.

Optionally, the first slot is a through slot penetrating through the second surface and the third surface, and/or the second slot is a through slot penetrating through the third surface and the second surface.

Optionally, the eccentric shaft is configured to be connected to a motor shaft, and the motor shaft is disposed coaxially with the output shaft.

Optionally, the first insert block is circumferentially matched with the first slot, and/or the second insert block is circumferentially matched with the second slot.

In order to achieve the above object, the present invention further provides a mechanical transmission device, which includes a motor and the single-stage cycloidal reducer as described above, wherein an eccentric shaft of the single-stage cycloidal reducer is connected with a motor shaft of the motor.

To achieve the above object, the present invention also provides a valve, comprising: the valve comprises a motor, the single-stage cycloid speed reducer and the valve body, wherein an eccentric shaft of the single-stage cycloid speed reducer is connected with a motor shaft of the motor, and an output shaft of the single-stage cycloid speed reducer is connected with the valve body.

Optionally, the valve is an air valve.

The utility model discloses a single-stage cycloid reduction gear, mechanical transmission and valve have following advantage:

the single-stage cycloid speed reducer comprises a shell and a transmission mechanism arranged in the shell, wherein the transmission mechanism comprises an eccentric shaft, a swinging wheel, a deviation eliminating disc and an output shaft which are connected in sequence; the swinging wheel and the depolarization disc are connected through the matching of the first insert block and the first insert groove, but a gap exists between the first insert groove and the first insert block in the radial direction so as to allow the swinging wheel and the depolarization disc to move relatively in the radial direction; meanwhile, the depolarization disc and the output shaft are connected through the matching of the second insertion block and the second insertion groove, but a gap exists between the second insertion groove and the second insertion block in the radial direction. During the in-service use, the internal tooth of casing and the external tooth part meshing of swinging wheel, and because the internal tooth receives the restriction of external tooth, make swinging wheel be rotation and revolution motion, and swinging wheel's rotation speed has also obtained the speed reduction for input speed, and swinging wheel transmits low-speed rotation motion for the output shaft afterwards, nevertheless at the in-process that swinging wheel transmitted rotation motion for the output shaft, need the revolution to offset for the output shaft, in order to avoid causing the interference to the rotation motion of output shaft, and the utility model discloses in, through the radial clearance between first slot and the first inserted block, and the radial clearance between second slot and the second inserted block offsets swinging of swinging wheel, thereby avoid the revolution swing to cause the interference to the output shaft, done like this and realized realizing higher reduction ratio in lower axial height, and the part is few, and is with low costs.

Second, the utility model discloses a single-stage cycloid reduction gear is through setting up the vibration of balancing weight in order to reduce cycloid reduction gear on the eccentric shaft to reduce the fluctuation of output speed, also prolonged cycloid reduction gear's life, and reduced the noise.

Drawings

Fig. 1 is a schematic structural diagram of a single-stage cycloidal reducer according to an embodiment of the present invention, showing a motor shaft connected to the single-stage cycloidal reducer;

FIG. 2 is an exploded schematic view of the single stage cycloidal reducer of FIG. 1;

FIG. 3 is an axial cross-sectional view of the single-stage cycloidal reducer of FIG. 1 with section lines omitted;

FIG. 4 is a schematic diagram showing the relationship between the wobble wheel, the depolarization disc and the output shaft of the single-stage cycloidal reducer of FIG. 1;

FIG. 5 is a schematic view of the construction of the eccentric shaft of the single-stage cycloidal reducer of FIG. 1;

FIG. 6 is a schematic view of the single stage cycloidal reducer of FIG. 1 as applied to an air valve;

fig. 7 is a schematic view of the single-stage cycloid speed reducer of fig. 1 applied to an air valve, showing an internal structure of the single-stage cycloid speed reducer.

In the figure:

10-single-stage cycloidal reducer;

100-a housing;

110-accommodating cavity, 111-internal teeth;

200-a transmission mechanism;

210-an eccentric shaft;

211-a counterweight block;

220-a wobble wheel;

221-outer teeth;

230-depolarization disc;

240-output shaft;

251-first insert, 252-first slot, 253-second insert, 254-second slot;

20-a motor;

21-a motor shaft;

30-air valve body.

Detailed Description

To make the objects, advantages and features of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise, and the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. The same or similar reference numbers in the drawings identify the same or similar elements.

As shown in fig. 1 to 4, the present embodiment provides a single-stage cycloid speed reducer 10 including a housing 100 and a transmission mechanism 200; the transmission mechanism 200 is disposed in the housing 100, and the transmission mechanism 200 includes an eccentric shaft 210, a swinging wheel 220, a depolarization disc 230, and an output shaft 240, which are connected in sequence. Wherein: one of the swinging wheel 220 and the depolarization disc 230 is provided with a first insertion block 251, the other of the swinging wheel 220 and the depolarization disc 230 is provided with a first insertion groove 252, and the first insertion block 251 is inserted into the first insertion groove 252; meanwhile, one of the depolarizing disk 230 and the output shaft 240 is provided with a second insertion block 253, and the other of the depolarizing disk 230 and the output shaft 240 is provided with a second insertion groove 254, and the second insertion block 253 is inserted into the second insertion groove 254. The connection between the swinging wheel 220 and the depolarization disc 230 is realized by the engagement of the first insertion block 251 and the first insertion groove 252, but a radial gap exists between the first insertion block 251 and the first insertion groove 252, so that the swinging wheel 220 and the depolarization disc 230 can move relatively in the radial direction. Similarly, the connection between the depolarization disc 230 and the output shaft 240 is achieved by the engagement between the second insertion block 253 and the second insertion groove 254, but a radial gap is also formed between the second insertion block 253 and the second insertion groove 254, so that the depolarization disc 230 and the output shaft 240 can move relative to each other in the radial direction.

Specifically, the wobble wheel 220 has a first surface, the depolarizing disk 230 has second and third opposing surfaces, and the output shaft 240 has a fourth surface. In this embodiment, a first surface of the wobble wheel 220 is disposed axially opposite a second surface of the depolarization disc 230, and a third surface of the depolarization disc 230 and a fourth surface of the output shaft 240 are disposed axially opposite. Preferably, one of the first surface and the second surface is provided with a first insert 251, and the other is provided with a first slot 252. Preferably, one of the third surface and the fourth surface is provided with a second insert 253, and the other is provided with a second slot 254. When the first insert block 251 is inserted into the first insert groove 252, the width of the first insert groove 252 in the radial direction is larger than that of the first insert block 251 to form a radial gap; when the second insert 253 is inserted into the second insert groove 254, the second insert groove 254 has a radial width larger than that of the second insert 253 to form a radial gap.

The housing 100 may be cylindrical, and the housing 100 has a containing cavity 110, the inner wall of the containing cavity 110 is provided with inner teeth 111 distributed along the circumferential direction, and the bottom wall of the containing cavity 110 is provided with an output hole (not labeled in the figure). The swinging wheel 220 is embedded in the accommodating chamber 110 and is eccentrically disposed with respect to the housing 100, and the swinging wheel 220 is connected to the eccentric shaft 210. Specifically, the outer teeth 221 distributed along the circumferential direction are provided on the outer surface of the swinging wheel 220, wherein a part of the outer teeth 221 and a part of the inner teeth 111 are engaged with each other, and a gap is provided between the other part of the outer teeth 221 and the other part of the inner teeth 111. The depolarizing disk 230 is connected to the wobble wheel 220 by the cooperation of the first insert 251 and the first slot 252, while the depolarizing disk 230 is also connected to the output shaft 240 by the cooperation of the second insert 253 and the second slot 254. The output shaft 240 extends through the output hole to the outside of the housing 100.

More specifically, the eccentric shaft 210 is adapted to be connected to a motor shaft 21 so that the single-stage cycloid speed reducer 10 is powered by the motor. Under the driving of the motor, the eccentric shaft 210 drives the oscillating wheel 220 to revolve around the motor shaft 21, and simultaneously, the oscillating wheel 220 also rotates under the action of the internal teeth 111 and the external teeth 221. In this embodiment, the number of the internal teeth 111 is N, the number of the external teeth 221 is N, and when the eccentric shaft 210 is driven by the motor to drive the swinging wheel 220 to revolve one turn, the internal teeth 111 and the external teeth 221 are relatively shifted by N-N teeth to rotate the swinging wheel 220. When the swinging wheel 220 revolves N/(N-N) turns, the swinging wheel 220 rotates one turn, and the reduction ratio of the rotation to the revolution is (N-N)/N. That is, the rotation of the swinging wheel 220 is decelerated with respect to the output rotation speed of the motor, and the swinging wheel 220 transmits the decelerated rotation to the output shaft 240. Alternatively, the motor shaft 21 may be arranged coaxially with the output shaft 240.

When the swing wheel 220 transmits power to the output shaft 240 via the depolarization disc 230 by the engagement of the first insertion block 251 and the first insertion groove 252 and the engagement of the second insertion block 253 and the second insertion groove 254, the revolution of the swing wheel 220 is canceled by the clearance between the insertion blocks and the insertion grooves, so that the revolution of the swing wheel 220 is not transmitted to the output shaft 240, thereby ensuring smooth rotation of the output shaft 240.

In practice, the first insert 251 may be disposed on the first surface or the second surface. Likewise, the second insert 253 may be disposed on the third surface or the fourth surface. Referring to fig. 2 in combination with fig. 4, in an embodiment, the first insertion block 251 is disposed on the first surface, and the second insertion block 253 is disposed on the fourth surface. Accordingly, the first slot 252 is disposed on the second surface, and the second slot 254 is disposed on the third surface, i.e., the first slot 252 and the second slot 254 are disposed on the depolarizing disc 230.

Optionally, the first insert block 251 and the second insert block 253 each extend in a radial direction to form an elongated structure such as a rectangle. Preferably, the number of the first insertion blocks 251 is two, and the two first insertion blocks 251 are arranged on the first surface in a central symmetry manner. Similarly, the number of the second inserts 253 may be two, and the two second inserts 253 are disposed on the fourth surface in a central symmetry manner. Thus, the two first inserts 251 are positioned on the same straight line, and the two second inserts 253 are also positioned on the same straight line. Accordingly, the first insertion groove 252 matches the width of the first insertion block 251 in the circumferential direction, and the second insertion groove 254 matches the width of the second insertion block 253 in the circumferential direction. The arrangement has the advantages that the stress condition of the insert block and the depolarization disc 230 can be improved and the service life of the single-stage cycloidal speed reducer 10 can be prolonged in the process of transmitting power by the single-stage cycloidal speed reducer 10. Here, the term "width in the circumferential direction" is matched to mean that, theoretically, the insert piece and the slot are tightly fitted in the circumferential direction without relative movement.

Further, the first insert 251 and the second insert 252 are arranged perpendicular to each other, and the stress condition of the depolarization disc 230 may be more uniform. In particular, when the first insertion groove 252 penetrates from the second surface to the third surface to form a through groove, and the second insertion groove 254 penetrates from the third surface to the second surface to form a through groove, and the first insertion block 251 and the second insertion block 252 have the same or substantially the same shape and size, the first insertion groove 253 and the second insertion groove 254 may not be distinguished, thereby facilitating the assembly of the single-stage cycloidal reducer 10.

In the present embodiment, the power is transmitted by inserting the insert block into the slot, and in practice, the smaller the gap between the insert block and the slot in the circumferential direction, the higher the transmission accuracy of the single-stage cycloidal reducer, for example, as described above, the width of the first insert block 251 in the circumferential direction matches the width of the first slot 252, and the width of the second insert block 253 in the circumferential direction matches the width of the second slot 254, so as to improve the transmission accuracy of the single-stage cycloidal reducer 10.

Further, the oscillating wheel 220 generates a large noise due to vibration when revolving around the motor shaft 21, and the single-stage cycloidal reducer 10 is used. In contrast, as shown in fig. 5, a weight 211 is further disposed on the eccentric shaft 210, and the weight 211 is pressed against the swinging wheel 220 to offset noise generated when the swinging wheel 220 revolves.

The single-stage cycloidal speed reducer of the embodiment can be applied to various fields to be used as a driving or speed reducing device.

Further, the present embodiment also provides a mechanical transmission device, which includes a motor and the single-stage cycloidal reducer of the present embodiment, wherein an eccentric shaft of the single-stage cycloidal reducer is connected with a motor shaft of the motor, so that the motor cooperates with the single-stage cycloidal reducer to perform speed reduction, as a situation that a mechanical action is required on an automobile, for example.

Further, this embodiment still provides a valve, including motor, the single-stage cycloid reduction gear and the valve body of this embodiment, and the eccentric shaft of single-stage cycloid reduction gear with the motor shaft of motor is connected, simultaneously the output shaft of single-stage cycloid reduction gear with the valve body is connected. Further, the valve is an air valve.

As shown in fig. 6 and 7, the air valve may be used in an automobile engine combustion control device or in a fuel cell power generation control device. Specifically, the air valve includes a motor 20, a single-stage cycloid speed reducer 10, and an air valve body 30, an eccentric shaft 210 of the single-stage cycloid speed reducer 10 is connected to a motor shaft 21 of the motor 20, and an output shaft 240 of the single-stage cycloid speed reducer 10 is connected to the air valve body 30. The driving force provided by the motor 20 is transmitted to the air valve body 30 via the single-stage cycloid speed reducer 10 to control the opening or closing of the air valve body 30.

Although the present invention is disclosed above, it is not limited thereto. Various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (12)

1. A single-stage cycloid speed reducer is characterized by comprising a shell and a transmission mechanism arranged in the shell; the transmission mechanism comprises an eccentric shaft, a swinging wheel, a depolarization disc and an output shaft which are connected in sequence, and the swinging wheel is meshed with the shell part;

wherein: one of the swinging wheel and the depolarization disc is provided with a first insertion block, the other one of the swinging wheel and the depolarization disc is provided with a first insertion slot, the first insertion block is inserted into the first insertion slot, and a radial gap is formed between the first insertion slot and the first insertion block;

one of the depolarization disc and the output shaft is provided with a second insertion block, the other one of the depolarization disc and the output shaft is provided with a second insertion slot, the second insertion block is inserted into the second insertion slot, and a radial gap exists between the second insertion slot and the second insertion block.

2. The single stage cycloidal reducer of claim 1 in which a counterweight is disposed on the eccentric shaft, the counterweight bearing against the wobble wheel.

3. The single stage cycloidal reducer of claim 1 or 2 wherein the wobble wheel has a first surface, the depolarizing disc has opposing second and third surfaces, the output shaft has a fourth surface; the first surface is disposed axially face-to-face with the second surface, and the third surface and the fourth surface are disposed axially face-to-face; one of the first surface and the second surface is provided with the first inserting block, and the other surface is provided with the first slot; one of the third surface and the fourth surface is provided with the second insert block, and the other is provided with the second slot.

4. The single stage cycloidal reducer of claim 3 wherein the first and second inserts each extend in a radial direction and the first and second inserts are perpendicular to each other.

5. The single stage cycloidal reducer of claim 4 in which there are two of said first inserts, both of said first inserts being disposed centrosymmetrically on a common surface, and/or in which there are two of said second inserts, both of said second inserts being disposed centrosymmetrically on a common surface.

6. The single stage cycloidal reducer of claim 5 wherein said first insert is disposed on said first surface and said second insert is disposed on said fourth surface, said first insert slot and said second insert slot each being disposed on said depolarizing disc.

7. The single stage cycloidal reducer of claim 6 in which said first slot is a through slot through said second and third surfaces and/or said second slot is a through slot through said third and second surfaces.

8. The single stage cycloidal reducer of claim 1 or 2 wherein the eccentric shaft is adapted for connection to a motor shaft, the motor shaft being disposed coaxially with the output shaft.

9. The single stage cycloidal reducer of claim 1 or 2 wherein the first plug is circumferentially mated with the first socket and/or the second plug is circumferentially mated with the second socket.

10. A mechanical transmission, characterized by comprising an electric motor and a single-stage cycloidal reducer according to any one of claims 1-9, the eccentric shaft of said single-stage cycloidal reducer being connected to the motor shaft of said motor.

11. A valve, comprising: a motor, a single stage cycloidal reducer according to any one of claims 1-9 and a valve body, the eccentric shaft of the single stage cycloidal reducer being connected to the motor shaft of the motor, while the output shaft of the single stage cycloidal reducer is connected to the valve body.

12. The valve of claim 11, wherein the valve is an air valve.

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