CN113217583A

CN113217583A - Power plant

Info

Publication number: CN113217583A
Application number: CN202010080835.8A
Authority: CN
Inventors: 翁嘉明; 段琴飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-05
Filing date: 2020-02-05
Publication date: 2021-08-06

Abstract

The power device of the invention mainly comprises: the power shaft, compression spring, transmission module and output end, the compression spring is set outside the power shaft, and the compression spring has two opposite ends respectively located at the extending direction of the power shaft, one end is a fixed end, the other end is a movable end, the movable end can receive an external force to shorten the length of the compression spring and reduce the inner diameter, the output torque force of the power shaft is increased by the action force generated after the compression spring is compressed by the external force, and the output torque force is transmitted to the output end through the transmission module.

Description

Power plant

Technical Field

The invention relates to a power device which has a simple structure and can increase torsion, and the power device can be widely applied to the existing motor or mechanical transmission.

Background

Accordingly, there are various power devices in the market to drive an output shaft to provide power, for example, a motor can convert electric energy into mechanical energy to drive a power output source of a machine, and different torque and power output can be achieved by different driving modes of a rotor. In the power transmission mode, the rotation speed and the torque force are reversely presented in a seesaw mode. The common power device is used for driving machinery and must be assisted with a gear speed change device to convert and integrate the torque force and the rotating speed; however, in the conversion and integration process, the power lost by the conversion is too large to meet the use principle of economical energy conservation.

For example, Taiwan patent publication No. M334199, the structure of kinetic energy for converting gravity into torque, discloses a main frame, a plurality of swing arms and a plurality of gravity members. The main frame is composed of a wheel-shaped base disc radially and outwards provided with four support arms, the base disc is in shaft coupling linkage with a central shaft, one end of each swing arm is in shaft coupling with each support arm, each gravity piece is respectively connected with each swing arm, and a stop part is protruded and extended in the axial direction of each support arm to be adjacent to each swing arm, so that the swing arms are limited to do reciprocating rotary swing motion on a vertical plane on one side of each support arm, and the horizontal distance between each gravity piece and the axis of the main frame is changed, so that the gravity of the gravity pieces is converted into torsion, and the main frame is braked to rotate to do work.

The energy stored in the gravity piece is in direct proportion to the mass of the gravity piece and the rotating speed of the gravity piece, so that the energy stored in the gravity piece can be increased continuously as long as the mass of the gravity piece and the rotating speed of the base plate are continuously improved. In fact, it is the simplest and most convenient method to directly promote the mass of the gravity piece, but the mass of the gravity piece is greatly promoted, so that the power consumption of the motor is greatly increased, the stress on the center shaft and the base plate of the gravity piece is increased, the economic benefit is greatly reduced, and the torque output efficiency cannot be greatly improved under the condition of limited increase of the power consumption of the motor.

Disclosure of Invention

In view of the above, the present invention provides a power device with a simple structure and capable of increasing torque, which can be widely applied to the existing motors or mechanical transmissions.

The technical means adopted by the invention are as follows.

To achieve the above objects, the present invention provides a power device, comprising: a power shaft driven by a power to rotate; a compression spring, which is sleeved outside the power shaft, and has two opposite ends respectively located at the extending direction of the power shaft, one end of the compression spring is a fixed end, the other end is a movable end, the movable end can bear a rotary external force, so that the length of the compression spring is shortened and the inner diameter is reduced; a transmission module, which is linked with the power shaft; and an output end connected with the transmission module and driven by the transmission module to rotate.

In a preferred aspect, a shaft sleeve is further provided, the shaft sleeve is sleeved outside the compression spring, and a fixing member is disposed at the fixed end of the shaft sleeve and the compression spring.

In a preferred aspect, a control member is further provided, and the control member provides the external force to the movable end.

In a preferred aspect, one end of the sleeve is shorter than the compression spring, leaving the free end exposed.

In a preferred aspect, a through hole is formed at a position of the sleeve corresponding to the compression spring for fixing the fixing member.

In another preferred aspect, the transmission module comprises: a transmission gear disposed around the power shaft; a transmission member having a tooth portion engageable with the transmission gear; a transmission shaft, which is axially arranged at one end of the power shaft by a one-way bearing (which can be a needle bearing), a proper position around the outer side of the transmission shaft is provided with a first external gear, and the other end of the transmission shaft, which is opposite to the power shaft, is axially arranged at the output end; and at least one rotating gear disposed around the transmission shaft and meshing the rotating gear with the first external gear; wherein, a second external gear is arranged at a proper position around the outer side of the power shaft, and the transmission gear is meshed with the second external gear; when the power shaft rotates, the second external gear drives the transmission gear and the transmission member, the transmission member drives the rotating gear, and the rotating gear drives the transmission shaft, so that the output end can rotate.

In another preferred aspect, the transmission module comprises: the transmission gear is a double-layer gear, and the diameters of a first layer gear and a second layer gear of the transmission gear are different; the annular fluted disc is a dish-shaped disc body, an inner gear is arranged on the inner side wall of the annular fluted disc, an opening is arranged at the center of the disc, and the force output end extends from the opening to the back; wherein, a second external gear is arranged at a proper position around the outer side of the power shaft, at least one transmission gear is arranged around the power shaft, and the first layer gear is meshed with the second external gear; then the annular fluted disc is sleeved with the power shaft, so that the power shaft penetrates out of the opening, and the internal gear is meshed with the second layer of gear; when the power shaft rotates, the second external gear drives the transmission gear, and the transmission gear drives the annular fluted disc to enable the output end to rotate.

In a preferred aspect, the first layer of gears of the transmission gear has a larger diameter than the second layer of gears.

Drawings

Fig. 1 is a schematic structural diagram of a power plant according to a first embodiment of the present invention.

Fig. 2 is a perspective view showing the structure of the compression spring according to the present invention.

Fig. 3 is an exploded view of a power unit according to a second embodiment of the present invention.

Fig. 4 is a perspective view showing a structure of a power unit according to a second embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a test structure according to the present invention.

Description of the figure numbers:

power shaft 10

Direction of extension 101

Second external gear 11

Compression spring 20

Hollow part 21

Fixed end 22

Free end 23

Transmission module 30

Drive gear 31

First layer gear 311

Second layer gear 312

Transmission member 32

Tooth 321

Drive shaft 33

First external gear 331

Rotating gear 34

One-way bearing 35

Annular toothed disc 36

Internal gear 361

Opening 362

Output end 40

Control member 50

Sliding bearing 51

Shaft sleeve 61

Securing member 62

Through hole 63

Cylinder 71

First plate 72

Second plate 73

A rod 74.

Detailed Description

Unless otherwise indicated, the following terms used in the present application have the definitions given below. It is noted that, as used in this application, the singular forms "a," "an," and "the" are intended to include both one and more than one of the referenced item, e.g., at least one, at least two, or at least three, and not to imply that there is only a single referenced item. In addition, the term "comprising", "having" or the like as used herein means that the combination of the elements or components described is not exclusive of other elements or components not specified. It should also be noted that the term "or" is generally also inclusive of "and/or" in a sense unless the content clearly dictates otherwise. The terms "about" or "substantially" are used herein to modify the error of any slight variation that does not alter its nature.

Fig. 1 is a schematic structural diagram of a power plant according to a first embodiment of the present invention. The power device of the invention at least comprises: a power shaft 10, a compression spring 20, a transmission module 30 and an output end 40.

The power shaft 10 can be driven to rotate by a power, which can be a motor or a mechanical drive.

The compression spring 20 is sleeved outside the power shaft 10, please refer to fig. 2, and the compression spring 20 is cylindrical, and is made of steel pipe by lathing, and has a through hollow portion 21 for being sleeved outside the power shaft 10, two opposite ends of the compression spring 20 are respectively located in the extending direction 101 of the power shaft 10, one end of the compression spring is a fixed end 22, the other end is a movable end 23, and the movable end 23 can be subjected to an external force (for example, a rotational external force), so that the length of the compression spring 20 is shortened and the inner diameter is reduced; in the embodiment shown in the figures, a control element 50 is further provided, the control element 50 provides the external force to the movable end 23, the control element 50 can be a control rod that is axially disposed on the power shaft 10 by a sliding bearing 51, so that a user can control the control element 50 by hand, and the sliding bearing 51 enables the control element 50 to move along the extending direction 101, thereby providing the external force to push the movable end 23 of the compression spring 20 to compress, so as to shorten the length and reduce the inner diameter of the compression spring 20. Of course, the control member 50 may be controlled by an automatic assembly.

The transmission module 30 is linked with the power shaft 10, in the embodiment shown in the figure, the transmission module has a transmission gear 31, a transmission member 32, a transmission shaft 33 and at least a rotation gear 34, the transmission gear 31 is disposed around the power shaft 10, the transmission member 32 has a tooth portion 321 capable of meshing with the transmission gear 31, the transmission shaft 33 is axially disposed at one end of the power shaft 10 by a one-way bearing 35 (which may be a needle bearing), a first external gear 331 is disposed at a proper position around the outer side of the transmission shaft 33, and the other end of the transmission shaft 33 opposite to the power shaft 10 is axially disposed at the output end 40; at least one rotation gear 34 is disposed around the transmission shaft 33 such that the rotation gear 34 is engaged with the first external gear 331.

Wherein, a second external gear 11 is arranged at a proper position around the outer side of the power shaft 10, and the transmission gear 31 is meshed with the second external gear 11; when the power shaft 10 rotates, the second external gear 11 drives the transmission gear 31 and the transmission member 32, the transmission member 32 drives the rotating gear 34, and the rotating gear 34 drives the transmission shaft 33, so that the output end 40 rotates; if a torque force needs to be increased, a user can operate the control element 50 by hand, and the sliding bearing 51 enables the control element 50 to move along the extending direction 101, so as to provide an external force to push and compress the movable end 23 of the compression spring 20, so that the length of the compression spring 20 is shortened and the inner diameter of the compression spring 20 is reduced, when the inner diameter of the compression spring 20 is reduced, the control element can be fixed on the power shaft 10 in a tightening manner, and the power shaft 10 is driven to rotate in an accelerating manner by an acting force generated after the compression spring 20 is compressed by the external force, so that the output torque force of the power shaft 10 is increased and is transmitted to the output end 40 through the transmission module 30.

Referring to fig. 3, the transmission module has at least one transmission gear 31 and an annular gear disc 36, the transmission gear 31 is a double-layer gear, the first layer gear 311 and the second layer gear 312 have different diameters, wherein the diameter of the first layer gear 311 is preferably larger than that of the second layer gear 312, and the at least one transmission gear 31 is disposed around the power shaft 1; the annular gear 36 is a dish-shaped disk having an inner gear 361 on the inner side wall, an opening 362 at the center of the disk, and the output end 40 extending from the opening 362 to the back.

When the power shaft 10 rotates, referring to fig. 4, the second external gear 11 drives the first layer gear 311 to rotate the transmission gear 31, and then the second layer gear 312 drives the internal gear 361 to rotate the annular gear 36, so that the output end 40 has power for use. Because the first gear 311 and the second gear 312 have different diameters and different tooth ratios, the gear 361 with a large diameter is driven, so that the power transmitted from the power shaft 10 to the output end 40 is reduced in rotation speed and increased in torsion. Similarly, if the torque force needs to be increased, the control element 50 can be operated to make the compression spring 20 generate the acting force after being compressed by the external force to drive the power shaft 10 to rotate at an accelerated speed, so as to increase the output torque force of the power shaft 10, and transmit the increased output torque force to the output end 40 through the transmission module 30.

In the second embodiment, the transmission gear 31 is disposed around the power shaft 10 and the annular fluted disc 36, so as to offset the eccentric force of the gear transmission, make the power transmission more direct and quieter, and bear the power with larger torque; next, the power shaft 10 passes through the annular toothed disc 36, so that the power shaft 10 and the output end 40 are coaxial, which can reduce the space required for disposing the acceleration and deceleration mechanism, and can be used as an accelerator when the power shaft 10 is opposite to the output end 40. Since the power shaft 10 and the output end 40 are coaxially arranged, the space required for arranging them in the mechanical device is greatly reduced. Furthermore, the end of the power shaft 10 can extend to the output end 40 and be combined with other mechanisms, so as to effectively utilize the power of the power shaft 10. For example, a speed reduction mechanism is connected to the end of the power shaft 10, and two different rotational speeds and torque outputs can be obtained by inputting at the same rotational speed. The invention can be widely applied to the existing motor or mechanical transmission, for example, the invention can be arranged on an electric bicycle as power transmission, and the invention has smaller volume, can be easily arranged at the middle position of the electric bicycle, and can increase the driving stability and controllability at the center of gravity.

Furthermore, the power device of the present invention further comprises a shaft sleeve 61, as shown in fig. 1, the shaft sleeve 61 is sleeved outside the compression spring 20, and a fixing member 62 is disposed between the shaft sleeve 61 and the fixed end 22 of the compression spring 20; wherein, a through hole 63 is disposed at a position of the shaft sleeve 61 corresponding to the compression spring 20 for fixing the fixing element 62, the shaft sleeve 61 and the compression spring 20 can be mutually fixed on the power shaft 10, and one end of the shaft sleeve 61 is shorter than the compression spring 20, so that the movable end 23 is exposed to be pushed by the control element 50. Of course, one end of the sleeve 61 may also extend outside the power shaft 10, and the second external gear 11 may be integrally formed with the sleeve 61.

In order to confirm that the torque force of the present invention can be controlled, a compression spring with 7 effective turns is used, the wire diameter is 4mm, the inner diameter is 6mm and the pitch is 2mm, and the present invention is applied to the test structure shown in fig. 5 to test the output torque force, the test structure is provided with the power shaft 10 and the compression spring 20, the compression spring 20 is sleeved outside the power shaft 10, one end of the power shaft 10 is sleeved in a cylinder 71, the cylinder 71 is welded and fixed on a first plate 72, the other end of the power shaft 10 is configured on a second plate 73, the first plate 72 and the second plate 73 are arranged oppositely, and the other end of the power shaft 10 passes through the second plate 73 and is configured with a rod 74, the length of the rod 74 is 1 meter, and a load can be hung at the tail end of the rod 74; the set load can be applied to the power shaft in the measuring process, and the torsion is calculated by multiplying the load by the vertical distance from the axis of the power shaft to the load, namely the length of the rod body, so that the performances of the compression spring, such as torsion under different loads and the like, can be tested; from the above test structure, it can be known that the torsion is 2.4kg when the length of the compression spring is shortened by 4mm, and the torsion is 9.6kg when the length of the compression spring is shortened by 8 mm; the test structure can confirm that the output torque can be surely increased when the length of the compression spring is shortened.

Claims

1. A power plant, comprising:

a power shaft driven by a power to rotate;

a compression spring, which is sleeved outside the power shaft, wherein the compression spring is provided with two opposite ends which are respectively positioned at the extending direction of the power shaft, one end of the compression spring is a fixed end, the other end of the compression spring is a movable end, and the movable end is subjected to an external force to shorten the length of the compression spring and reduce the inner diameter;

a transmission module, which is linked with the power shaft; and

an output end connected to the transmission module and driven by the transmission module to rotate.

2. The power device as claimed in claim 1, wherein a sleeve is provided, the sleeve is sleeved outside the compression spring, and a fixing member is provided at the fixed end of the sleeve and the compression spring.

3. The power device as claimed in claim 2, wherein a control member is provided, the control member providing the external force to the movable end.

4. The power unit of claim 2, wherein one end of said sleeve is shorter than said compression spring, leaving said free end exposed.

5. The power device as claimed in claim 2, wherein the bushing has a through hole corresponding to the compression spring for fixing the fixing member.

6. The power device according to any one of claims 1 to 5, wherein the transmission module comprises:

a transmission gear disposed around the power shaft;

a transmission member having a tooth portion engaged with the transmission gear;

a transmission shaft, which is arranged at one end of the power shaft by a one-way bearing shaft, a first external gear is arranged at a proper position around the outer side of the transmission shaft, and the other end of the transmission shaft, which is opposite to the power shaft, is arranged at the output end by a shaft; and

at least one rotating gear disposed around the transmission shaft and engaging the rotating gear with the first external gear;

wherein, a second external gear is arranged at a proper position around the outer side of the power shaft, and the transmission gear is meshed with the second external gear; when the power shaft rotates, the second external gear drives the transmission gear and the transmission member, the transmission member drives the rotating gear, and the rotating gear drives the transmission shaft, so that the output end can rotate.

7. The power device according to any one of claims 1 to 5, wherein the transmission module comprises:

at least one transmission gear which is a double-layer gear, wherein the diameter of the first layer gear is different from that of the second layer gear, and the transmission gear is configured around the power shaft; and

the annular fluted disc is a dish-shaped disc body, an inner gear is arranged on the inner side wall of the annular fluted disc, an opening is arranged at the center of the disc, and the force output end extends from the opening to the back;

wherein, a second external gear is arranged at a proper position around the outer side of the power shaft, and the first layer gear is meshed with the second external gear; then the annular fluted disc is sleeved with the power shaft, so that the power shaft penetrates out of the opening, and the internal gear is meshed with the second layer of gear; when the power shaft rotates, the second external gear drives the transmission gear, and the transmission gear drives the annular fluted disc to enable the output end to rotate.

8. The power plant of claim 7, wherein said first layer of gears of said drive gear has a larger diameter than said second layer of gears.