Efficient motor

Abstract

The invention discloses a high-efficiency motor, and relates to the technical field of motors, the high-efficiency motor comprises a motor, the front end of the motor is provided with a transmission case, the transmission case is internally provided with a controllable variable-speed belt wheel mechanism used for changing output distribution of the motor, and the front side of a variable-speed belt wheel is provided with an adjusting mechanism used for adjusting the variable-speed belt wheel. And a pressing rotating mechanism used for driving the adjusting mechanism is arranged at the upper end of the adjusting mechanism, and the problem is solved by arranging the controllable speed change belt wheel mechanism, the adjusting mechanism and the pressing rotating mechanism. The problems that in the using process of a traditional motor, due to the fact that connection driving is directly conducted in the transmission process, the output torque is small and fixed, meanwhile, the rotating speed is relatively fixed, under the load condition, the motor is prone to heating, the working efficiency is reduced, the motor is prone to being burnt out, variable using scenes of the motor are not facilitated, and the working efficiency is reduced are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to a high-efficiency electric machine. BACKGROUND

[0002] Electric machines convert intangible electric power into tangible mechanical movement, thereby driving almost all modern mechanical equipment, and are the core executive components of automation, electrification and intelligence. Electric machines have the advantages of high efficiency, environmental friendliness, simple mechanism and easy maintenance, and provide convenience in modern industry and our lives.

[0003] In the traditional use of electric machines, the output torque is small and fixed, and the speed is relatively fixed during direct connection and driving in the transmission process. In the case of load, the electric machine is prone to heat and reduces the working efficiency, and is prone to burn out the electric machine, which is not conducive to the use of the electric machine in a variable scene, and reduces the working efficiency. SUMMARY

[0004] To solve the problems in the background art, the present application provides a high-efficiency electric machine, which can adjust and increase the output torque of the electric machine, reduce the working speed to meet various working requirements, optimize the electric machine to improve the energy efficiency and performance of the electric machine, and solve the problems in the traditional use of electric machines, such as small and fixed output torque, relatively fixed speed during direct connection and driving in the transmission process, prone to heat and reduce the working efficiency of the electric machine in the case of load, prone to burn out the electric machine, not conducive to the use of the electric machine in a variable scene, and reduce the working efficiency.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a high-efficiency electric machine, comprising an electric machine, a transmission box is arranged at the front end of the electric machine, a controllable variable speed pulley mechanism for changing the output distribution of the electric machine is arranged inside the transmission box, an adjusting mechanism for adjusting the controllable variable speed pulley mechanism is arranged at the front side of the controllable variable speed pulley mechanism, and a pressing and rotating mechanism for driving the adjusting mechanism is arranged at the upper end of the adjusting mechanism.

[0006] As a preferred embodiment of the present application, the controllable variable speed pulley mechanism comprises a transmission steel belt, both ends of the transmission steel belt are provided with variable speed pulleys, the variable speed pulleys are movably connected with the transmission steel belt in engagement, the variable speed pulley at one end of the transmission steel belt is fixedly connected with the output end of the electric machine, and the variable speed pulley at the other end of the transmission steel belt is fixedly connected with an output transmission rod penetrating through the transmission box.

[0007] As preferred of the present application, the variable speed pulley comprises a first variable speed pulley, a second variable speed pulley and a first spring, the front of the first variable speed pulley is provided with the second variable speed pulley, a plurality of transmission heads fixedly connected with the second variable speed pulley are arranged between the second variable speed pulley and the first variable speed pulley, a plurality of transmission grooves matched with the transmission heads are arranged on one side of the first variable speed pulley close to the second variable speed pulley, and the transmission grooves are internally provided with the first spring.

[0008] As preferred of the present application, the adjusting mechanism comprises a transmission gear, a transmission rack meshed with the transmission gear is arranged at the front of the transmission gear, step gears are arranged at the left and right ends of the transmission rack, the lower end of the step gear is meshed and connected with the transmission rack, adjusting racks are arranged at the left and right sides of the upper surface of the transmission rack, the adjusting racks are meshed and connected with pinions of the step gears, and a pressure plate is arranged at one end of the adjusting rack close to the variable speed pulley.

[0009] As preferred of the present application, the transmission box is internally provided with a support plate, the support plate is movably connected with the step gear through a gear shaft rod, a first positioning rod is arranged on the upper surface of the support plate, a first sliding rod is fixedly connected with one side of the transmission rack close to the first positioning rod, a sliding groove movably connected with the first sliding rod is arranged on the first positioning rod, a second positioning rod perpendicular to the first positioning rod is fixedly connected with the upper surface of the first positioning rod, second sliding rods are fixedly connected with the sides of the adjusting racks close to the second positioning rod, and sliding grooves movably connected with the second sliding rods are arranged on the second positioning rod.

[0010] As preferred of the present application, the pressing transmission mechanism comprises an output transmission rod, the bottom of the output transmission rod is fixedly connected with the upper surface of the transmission gear, a transmission groove is arranged on the upper surface of the output transmission rod, a second spring is arranged at the bottom of the transmission groove, a variable speed adjusting knob is arranged on the upper surface of the output transmission rod, a plurality of contraction grooves are arranged on the cylindrical surface of the bottom end of the variable speed adjusting knob, a third spring is arranged in the contraction grooves, a compression transmission head is fixedly connected with one end of the third spring, and the other end of the third spring is fixedly connected with the bottom of the contraction groove.

[0011] As preferred of the present application, the cylindrical surface of the upper end of the output transmission rod is provided with a positioning protrusion, a positioning head for positioning the output transmission rod is fixedly connected in the transmission box, and the positioning head and the positioning protrusion of the output transmission rod are matched with each other.

[0012] Compared with the prior art, the present application has the following beneficial effects: 1The present application sets up controllable variable speed pulley mechanism, adjusting mechanism and pressing rotating mechanism, when the user uses, through operating pressing rotating mechanism to drive adjusting mechanism, through adjusting mechanism to adjust controllable variable speed pulley mechanism, the size of the output torque of motor can be adjusted, and the speed of motor can also be adjusted.

[0013] 2, the present application sets up controllable variable speed pulley mechanism, when the user uses, through adjusting mechanism to adjust the distance between second variable speed pulley and first variable speed pulley, through the distance between first variable speed pulley and second variable speed pulley, the distance of second spring can be adjusted, through the adjustment of the distance between second spring and the center of first variable speed pulley, the speed and transmission torque of driven variable speed pulley are changed, and the stability of variable speed pulley is increased through first spring.

[0014] 3, the present application sets up adjusting mechanism, when the user uses, the driving transmission gear can be driven through pressing rotating mechanism, the movement of transmission rack gear is driven through the rotation of transmission gear, the rotation of stepped gear is driven through the movement of transmission rack gear, and the movement of adjusting rack is driven through the rotation of stepped gear, so that controllable variable speed pulley mechanism is adjusted, the symmetrical design of two sides of adjusting rack can realize linkage reverse movement, the length of transmission steel belt can not be changed when adjusting two variable speed pulleys, and the breakage of transmission steel belt is avoided.

[0015] 4, the present application sets up pressing rotating mechanism, when the user uses, the bottom of variable speed adjusting knob is pressed into the transmission slot in the upper end of output transmission rod through pressing variable speed adjusting knob, the output transmission rod is rotated through rotating variable speed adjusting knob, the transmission gear is driven through the rotating output transmission rod, so that the speed of equipment is adjusted, the variable speed adjusting knob can be directly pushed into the transmission slot in the upper end of output transmission rod through the design of compression transmission head and third spring, the transmission gear is popped out through the third spring on the transmission guide rail of rotating transmission slot, and the user can be prevented from being mistaken through the design of second spring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the present application; Figure 2 It is the internal structure schematic diagram of the present application; Figure 3 It is the transmission structure and the internal structure schematic diagram of transmission box; Figure 4 It is the main view of transmission mechanism and the internal structure of transmission box; Figure 5 It is provided for the embodiment of the present application Figure 4 It is the enlarged view of A place in the present application; Figure 6 It is the split view of variable speed pulley of the present application.

[0017] In the figure: 1, motor; 2, transmission box; 3, speed regulation knob; 4, output transmission rod; 5, transmission gear; 6, step gear; 7, transmission rack; 8, support plate; 9, first positioning rod; 10, adjustment rack; 11, transmission steel belt; 12, first speed change wheel; 13, second speed change wheel; 14, second spring; 15, compression transmission head; 16, third spring; 17, first spring; 18, speed change pulley; 19, pressure plate; 20, second positioning rod; 21, positioning head; 22, transmission head; 23, transmission groove. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0019] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0020] Secondly, "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0021] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application herein. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0022] Embodiment 1 Reference Figures 1-6 For the first embodiment of the present application, a high-efficiency motor is provided, which comprises a motor 1, the front end of the motor 1 is provided with a transmission box 2, the inside of the transmission box 2 is provided with a controllable speed change pulley mechanism for changing the output distribution of the motor, the front side of the controllable speed change pulley mechanism is provided with an adjustment mechanism for adjusting the controllable speed change pulley mechanism, the upper end of the adjustment mechanism is provided with a pressing rotation mechanism for driving the adjustment mechanism.

[0023] Specifically, by setting the controllable variable speed pulley mechanism, the adjusting mechanism and the pressing rotating mechanism, the user can adjust the output torque of the motor 1 and the rotating speed of the motor 1 by operating the pressing rotating mechanism to drive the adjusting mechanism and adjusting the controllable variable speed pulley mechanism.

[0024] Further, the user can adjust the output torque and the rotating speed of the motor 1 by operating the pressing rotating mechanism to drive the adjusting mechanism and adjusting the controllable variable speed pulley mechanism, so as to meet the change of various practical requirements.

[0025] Embodiment 2 The second embodiment of the application provides a high-efficiency motor, the controllable variable speed pulley mechanism comprises a transmission steel belt 11, both ends of the transmission steel belt 11 are provided with variable speed pulleys 18, the variable speed pulleys 18 are movably connected with the transmission steel belt 11, the variable speed pulley 18 at one end of the transmission steel belt 11 is fixedly connected with an output end of the motor 1, the variable speed pulley 18 at the other end of the transmission steel belt 11 is fixedly connected with an output transmission rod 4 penetrating a transmission box 2, the variable speed pulley 18 comprises a first variable speed pulley 12, a second variable speed pulley 13 and a first spring, the front surface of the first variable speed pulley 12 is provided with the second variable speed pulley 13, a plurality of transmission heads 22 fixedly connected with the second variable speed pulley 13 are arranged between the second variable speed pulley 13 and the first variable speed pulley 12, a plurality of transmission grooves 23 matched with the transmission heads 22 are formed in one side of the first variable speed pulley 12 close to the second variable speed pulley 13, the first spring 17 is arranged in the transmission groove 23, and the transmission head 22 is movably connected with the transmission groove 23.

[0026] Specifically, by setting the controllable variable speed pulley mechanism, the user can adjust the distance between the second variable speed pulley 13 and the first variable speed pulley 12 by the adjusting mechanism, the distance of the transmission steel belt 11 can be adjusted by the distance between the first variable speed pulley 12 and the second variable speed pulley 13, the rotating speed and the transmission torque of the driven variable speed pulley 18 are changed by the adjustment of the distance between the transmission steel belt 11 and the center of the first variable speed pulley 12, and the stability of the variable speed pulley 18 is improved by the first spring 17.

[0027] Further, the user can adjust the distance between the first variable speed pulley 12 and the second variable speed pulley 13 by the adjusting mechanism, the transmission steel belt 11 can be extruded by the change of the distance between the second variable speed pulley 13 and the first variable speed pulley 12, the distance between the transmission steel belt 11 and the center of the different variable speed pulleys 18 is changed by the extrusion, and the variable speed adjustment is achieved.

[0028] Embodiment 3 A third embodiment of the present invention provides a high-efficiency motor. The adjusting mechanism includes a transmission gear 5, a transmission rack 7 meshing with the transmission gear 5 in front of the transmission gear 5, stepped gears 6 at both ends of the transmission rack 7, the lower large gear of the stepped gear 6 meshing with the transmission rack 7, adjusting racks 10 on both sides of the transmission rack 7, the adjusting racks 10 meshing with the small gears of the stepped gears 6, and a pressure plate 19 at the end of the adjusting rack 10 near the speed-changing pulley 18. The transmission box 2 is internally configured with... A support plate 8 is provided, which is movably connected to the stepped gear 6 via a gear shaft. A first positioning rod 9 is provided on the top of the support plate 8. A first sliding rod is fixedly connected to the side of the transmission rack 7 near the first positioning rod 9. A sliding groove is provided on the first positioning rod 9 to engage and movably connect with the first sliding rod. A second positioning rod 20 perpendicular to the first positioning rod 9 is fixedly connected to the top of the first positioning rod 9. A second sliding rod is fixedly connected to the side of the adjusting rack 10 near the second positioning rod 20. A sliding groove is provided on the second positioning rod 20 to engage and movably connect with the second sliding rod.

[0029] Specifically, by setting an adjustment mechanism, the user can drive the transmission gear 5 by pressing and rotating the mechanism. The rotation of the transmission gear 5 drives the transmission rack 7 to move. The moving transmission rack 7 drives the stepped gear 6 to rotate. The rotating stepped gear 6 drives the adjustment rack 10 to move, thereby adjusting the controllable speed-changing pulley mechanism. Through the symmetrical design, the adjustment racks 10 on both sides can achieve linkage and reverse movement. The length of the transmission steel belt 11 can be changed while adjusting the two speed-changing pulleys 18, avoiding the transmission steel belt 11 from breaking. The design of the slide groove and slide rail increases the stability of the rack movement.

[0030] Furthermore, during use, the user drives the transmission gear 5 by pressing and rotating the mechanism. The transmission gear 5 drives the transmission rack 7 to move, and the moving transmission rack 7 drives the step gear 6 to rotate. The rotating step gear 6 drives the movement of the adjusting rack 10, thereby adjusting the controllable speed-changing pulley mechanism.

[0031] Example 4 In a fourth embodiment of the present invention, a high-efficiency motor is provided. The pressing transmission mechanism includes an output transmission rod 4. The bottom of the output transmission rod 4 is fixedly connected to the top of the transmission gear 5. A transmission slot is provided on the top of the output transmission rod 4. A second spring 14 is provided at the bottom of the transmission slot. A speed adjustment knob 3 is provided on the top of the output transmission rod 4. A plurality of contraction grooves are provided on the cylindrical surface at the bottom of the speed adjustment knob 3. A third spring 16 is provided inside the contraction groove. One end of the third spring 16 is fixedly connected to a compression transmission head 15. The other end of the third spring 16 is fixedly connected to the bottom of the contraction groove. A positioning protrusion is provided on the cylindrical surface at the top of the output transmission rod 4. A positioning head 21 for positioning the output transmission rod 4 is fixedly connected inside the transmission box 2. The positioning head 21 cooperates with the positioning protrusion of the output transmission rod 4.

[0032] Specifically, by setting up a press-and-rotate mechanism, when using the device, the user presses the speed adjustment knob 3 so that the bottom of the speed adjustment knob 3 is pressed into the transmission slot at the upper end of the output transmission rod 4. By rotating the speed adjustment knob 3, the output transmission rod 4 is rotated. The rotating output transmission rod 4 drives the transmission gear 5 to adjust the speed of the device. Through the design of the compression transmission head 15 and the third spring 16, the speed adjustment knob 3 can be directly pushed into the transmission slot at the upper end of the output transmission rod 4. The third spring 16 on the transmission guide rail of the rotating transmission slot pops the transmission gear 5 out for transmission. The design of the second spring 14 can prevent the user from accidentally touching the control.

[0033] Furthermore, during use, the user presses the speed adjustment knob 3 to press the bottom of the speed adjustment knob 3 into the transmission slot at the upper end of the output transmission rod 4. By rotating the speed adjustment knob 3, the output transmission rod 4 is rotated. When rotating, the third spring 16 on the output transmission rod 4 pushes the compression transmission head 15 into the guide rail of the transmission slot. The rotating output transmission rod 4 drives the transmission gear 5 to adjust the equipment. After adjustment, the second spring 14 pops the speed adjustment knob 3 out.

[0034] Working principle: During use, if the user wants to adjust the driving torque and speed of the motor, they can press the speed adjustment knob 3 so that the bottom of the speed adjustment knob 3 is pressed into the transmission slot at the upper end of the output transmission rod 4. By rotating the speed adjustment knob 3, the output transmission rod 4 is rotated. When rotating, the third spring 16 on the output transmission rod 4 compresses the transmission head 15 and pushes it into the guide rail of the transmission slot. The rotating output transmission rod 4 drives the transmission gear 5, which in turn drives the transmission rack 7. The moving transmission rack 7 drives the stepped gear 6 to rotate. The rotating stepped gear 6... The movement of the drive adjustment rack 10 adjusts the controllable speed-changing pulley mechanism. Through the symmetrical design, the adjustment racks 10 on both sides can achieve linked reverse movement, thereby adjusting the distance between the first speed-changing pulley 12 and the second speed-changing pulley 13. Adjusting the distance between the first speed-changing pulley 12 and the second speed-changing pulley 13 can compress the transmission steel belt 11 by changing the distance between the centers of the transmission steel belt 11 and the different speed-changing pulleys 18, thereby achieving speed regulation.

[0035] In summary, through the cooperation of motor 1, transmission box 2, speed adjustment knob 3, output transmission rod 4, transmission gear 5, stepped gear 6, transmission rack 7, adjusting rack 10, transmission steel belt 11, second spring 14, compression transmission head 15, and speed change pulley 18, the output torque of the motor can be adjusted to increase, and the operating speed can be reduced to meet various working requirements, thus optimizing and improving the energy efficiency and performance of the motor.

[0036] The motors, transmission gears, transmission racks, adjusting racks, stepped gears, speed-changing pulleys, and springs used in this application can be additionally equipped with protective measures of common knowledge in this technical field under different usage environments. These measures include, but are not limited to, the following: for example, protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing. These are common technical means used by those skilled in the art.

[0037] It should be noted that (motor, cylinder, screw, gear, worm gear, electric telescopic rod, damper, spring) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are all common knowledge in the art, and therefore will not be described in detail in this application document.

[0038] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0039] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0040] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A high efficiency electric machine characterized by: The utility model provides an adjustable transmission mechanism of motor, including motor (1), the front end of motor (1) is provided with transmission case (2), the inside of transmission case (2) is provided with controllable variable speed pulley mechanism for changing motor output distribution, the front side of controllable variable speed pulley mechanism is provided with adjusting mechanism for controllable adjustment variable speed pulley mechanism, the upper end of adjusting mechanism is provided with press rotating mechanism for driving adjusting mechanism.

2. A high efficiency electric machine as recited in claim 1, wherein: The controllable variable speed pulley mechanism includes a transmission steel belt (11), both ends of the transmission steel belt (11) are provided with variable speed pulleys (18), the variable speed pulleys (18) are movably connected with the transmission steel belt (11), the variable speed pulley (18) at one end of the transmission steel belt (11) is fixedly connected with the output end of the motor (1), and the variable speed pulley (18) at the other end of the transmission steel belt (11) is fixedly connected with an output transmission rod (4) penetrating through the transmission case (2).

3. A high efficiency electric machine as recited in claim 2, wherein: The variable speed pulley (18) includes a first variable speed pulley (12), a second variable speed pulley (13) and a first spring, the front of the first variable speed pulley (12) is provided with the second variable speed pulley (13), a plurality of transmission heads (22) fixedly connected with the second variable speed pulley (13) are arranged between the second variable speed pulley (13) and the first variable speed pulley (12), one side of the first variable speed pulley (12) close to the second variable speed pulley (13) is provided with a plurality of transmission grooves (23) matched with the transmission heads (22), the transmission grooves (23) are provided with the first springs (17) in the inside, and the transmission heads (22) are movably connected with the transmission grooves (23).

4. A high efficiency electric machine as recited in claim 2, wherein: The adjusting mechanism includes a transmission gear (5), a transmission rack (7) engaged with the transmission gear (5) is arranged in front of the transmission gear (5), step gears (6) are arranged at both ends of the transmission rack (7), the lower end of the step gear (6) is engaged with the transmission rack (7), adjusting racks (10) are arranged at both sides of the transmission rack (7), the adjusting racks (10) are engaged with pinions of the step gears (6), and one end of the adjusting rack (10) close to the variable speed pulley (18) is provided with a pressure plate (19).

5. A high efficiency electric machine as recited in claim 4, wherein: The inside of the transmission case (2) is provided with a support plate (8), the support plate (8) is movably connected with the step gear (6) through a gear shaft rod, the upper surface of the support plate (8) is provided with a first positioning rod (9), the side of the transmission rack (7) close to the first positioning rod (9) is fixedly connected with a first sliding rod, the first positioning rod (9) is provided with a sliding groove engaged movably with the first sliding rod, the upper surface of the first positioning rod (9) is fixedly connected with a second positioning rod (20) perpendicular to the first positioning rod (9), and the side of the adjusting rack (10) close to the second positioning rod (20) is fixedly connected with a second sliding rod.

6. A high efficiency electric machine as recited in claim 4, wherein: The pressing transmission mechanism comprises an output transmission rod (4), the bottom of the output transmission rod (4) is fixedly connected with the upper surface of a transmission gear (5), the upper surface of the output transmission rod (4) is provided with a transmission slot, the bottom of the transmission slot is provided with a second spring (14), the upper surface of the output transmission rod (4) is provided with a speed adjusting knob (3), the cylindrical surface of the bottom end of the speed adjusting knob (3) is provided with a plurality of contraction grooves, the inside of the contraction grooves is provided with a third spring (16), one end of the third spring (16) is fixedly connected with a compression transmission head (15), the other end of the third spring (16) is fixedly connected with the bottom of the contraction grooves.

7. A high efficiency electric machine as recited in claim 2, wherein: The cylindrical surface of the upper end of the output transmission rod (4) is provided with a positioning protrusion, the inside of the transmission box (2) is fixedly connected with a positioning head (21) for positioning the output transmission rod (4), and the positioning head (21) and the positioning protrusion of the output transmission rod (4) are matched with each other.

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