A motor with added counterweight

By inserting a counterweight at the bottom of the motor rotor and utilizing the cooperation of a return spring and a locking block, the replacement cost problem caused by the fixed inertia of the motor is solved, enabling flexible adjustment of the inertia and effective heat dissipation, and simplifying the disassembly and installation process of the motor.

CN224438702UActive Publication Date: 2026-06-30SUZHOU JINZHONGWEI TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU JINZHONGWEI TECH CO LTD
Filing Date
2025-07-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The rotational inertia of existing motors is relatively fixed, which means that the motor needs to be replaced when a different inertia is required, increasing costs.

Method used

A motor structure with added counterweight was designed. By inserting the counterweight into the bottom of the motor rotor and using the cooperation of a return spring and a locking block, the counterweight can be detached and installed, increasing the moment of inertia. Heat is also dissipated by an exhaust fan, simplifying the assembly and disassembly process of the device.

Benefits of technology

It enables motors with adjustable inertia as needed, reducing the cost of replacing motors and improving the efficiency of disassembly and installation of the device, while effectively dissipating heat.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a motor with an added counterweight, relating to the field of motors. It includes a front cover mechanism comprising a motor front cover, an extended internal thread block, a first internal thread mounting block, and a mounting thread rod. A rear cover mechanism is located at the top of the front cover mechanism, comprising a motor rear cover, a second internal thread mounting block, a motor stator, and an exhaust fan. A rotor mechanism is internally located within the rear cover mechanism, comprising a motor rotor, a stabilizing groove, a counterweight, a hollow hole, a moving slot, a moving opening, a return spring, a locking block, and a protrusion. In this utility model, the return spring's reset mechanism moves the locking block into the stabilizing groove, thereby stabilizing the motor rotor and the counterweight. The counterweight, mounted at the bottom of the motor rotor, increases the device's inertia. The detachable counterweight facilitates replacement with counterweights of different weights.
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Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor with added counterweights. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It is widely used in industries such as industry, transportation, home appliances, and robotics. It utilizes an energized coil to generate a rotating magnetic field, which acts on the rotor to form a magnetoelectric torque.

[0003] In existing technologies, the rotational inertia of motors is relatively fixed. In actual use, when different inertia is required, the motor often needs to be replaced, which increases costs. Utility Model Content

[0004] The purpose of this invention is to provide a motor with an added counterweight to solve the problem mentioned in the background art that the moment of inertia of the motor is relatively fixed, and in actual use, the motor often needs to be replaced when different moments of inertia are required, which increases the cost.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: It includes a front cover mechanism, comprising a motor front cover, an extended internal thread block, a first internal thread mounting block, and a mounting thread rod. A rear cover mechanism is provided at the top of the front cover mechanism, comprising a motor rear cover, a second internal thread mounting block, a motor stator, and an exhaust fan. A rotor mechanism is provided inside the rear cover mechanism, comprising a motor rotor, a stabilizing groove, a counterweight, a hollow hole, a moving groove, a moving opening, a return spring, a locking block, and a protrusion.

[0006] In a preferred embodiment, the bottom outer wall of the motor front cover is fixedly connected to one side of the extended internal thread block, and three sets of extended internal thread blocks are provided. The top outer wall of the motor front cover is fixedly connected to one side of the first internal thread mounting block.

[0007] In a preferred embodiment, the inner wall of the first internal thread mounting block is threadedly connected to the outer wall of the mounting thread rod, and the inner wall of the motor front end cover is provided with a ball bearing.

[0008] In a preferred embodiment, the top of the motor front end cover is movably connected to the bottom of the motor rear end cover, and the outer wall of the motor rear end cover is fixedly connected to one side of the second internal thread mounting block, and the inner wall of the second internal thread mounting block is threadedly connected to the outer wall of the mounting thread rod.

[0009] In a preferred embodiment, the top of the motor rear end cover is fixedly connected to the bottom of the exhaust fan, and the inner wall of the motor rear end cover is engaged with the top of the motor stator, the bottom of the motor stator is engaged with the inner wall of the motor front end cover, and a ball bearing is provided on the inner wall of the motor rear end cover.

[0010] In a preferred embodiment, the inner wall of the motor stator is rotatably connected to the outer wall of the motor rotor, and the top outer wall of the motor rotor is rotatably connected to the inner wall of the rear end cover of the motor via ball bearings, and the bottom outer wall of the motor rotor is rotatably connected to the inner wall of the front end cover of the motor via ball bearings.

[0011] In a preferred embodiment, the bottom outer wall of the motor rotor is provided with a stabilizing groove, the counterweight is provided with a hollow hole, and the inner wall of the hollow hole is movably connected to the outer wall of the motor rotor. The inner wall of the hollow hole is provided with a moving groove, and the bottom of the moving groove is provided with a moving opening.

[0012] In a preferred embodiment, the inner wall of the moving groove is fixedly connected to one end of the return spring, and the other end of the return spring is fixedly connected to one side of the locking block. The outer wall of the locking block is movably connected to the inner wall of the moving groove, and the outer wall of the locking block is movably connected to the inner wall of the stabilizing groove. The bottom wall of the locking block is fixedly connected to the top of the protrusion, and the outer wall of the protrusion is movably connected to the outer wall of the moving opening.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, when it is necessary to increase the inertia, the bottom of the motor rotor is inserted into the hollow hole, and the protrusion is engaged, causing the protrusion to move inside the moving port. At the same time, the locking block moves inside the moving groove. The movement of the locking block compresses the return spring. As the counterweight moves, it causes the locking block to move towards the stabilizing groove. When the locking block is aligned with the stabilizing groove, the protrusion is released, and the return spring resets the locking block to move into the stabilizing groove, thereby stabilizing the motor rotor and the counterweight. The counterweight is installed at the bottom of the motor rotor, thereby increasing the inertia of the device. The detachable design of the counterweight facilitates the replacement of counterweights of different weights.

[0015] 2. In this utility model, the two ends of the motor rotor are respectively connected to the interior of the front end cover and the rear end cover of the motor. At the same time, the motor stator is covered on the outer wall of the motor rotor. The installation threaded rod passes through the interior of the first internal threaded mounting block and enters the interior of the second internal threaded mounting block. Rotating the installation threaded rod stabilizes the front end cover and the rear end cover of the motor. The exhaust fan is turned on to generate exhaust force, thereby extracting the heat inside the device. This facilitates the overall assembly of the device, and the exhaust fan facilitates the removal of heat from inside the device. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a motor with an added counterweight provided by this utility model;

[0017] Figure 2 Exploded view of a motor with added counterweight provided by this utility model;

[0018] Figure 3 An exploded view of the rotor mechanism of a motor with added counterweights provided by this utility model;

[0019] Figure 4 A cross-sectional view of the counterweight block of a motor with an added counterweight block provided by this utility model.

[0020] Legend:

[0021] 1. Front cover mechanism; 101. Motor front cover; 102. Extended internal thread block; 103. First internal thread mounting block; 104. Mounting thread rod; 2. Rear cover mechanism; 201. Motor rear cover; 202. Second internal thread mounting block; 203. Motor stator; 204. Exhaust fan; 3. Rotor mechanism; 301. Motor rotor; 302. Stabilizing groove; 303. Counterweight block; 304. Hollow hole; 305. Moving groove; 306. Moving opening; 307. Return spring; 308. Locking block; 309. Protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution comprising: a front cover mechanism 1, which includes a motor front cover 101, an extended internal thread block 102, a first internal thread mounting block 103, and a mounting thread rod 104; a rear cover mechanism 2 is provided on the top of the front cover mechanism 1; the rear cover mechanism 2 includes a motor rear cover 201, a second internal thread mounting block 202, a motor stator 203, and an exhaust fan 204; and a rotor mechanism 3 is provided inside the rear cover mechanism 2; the rotor mechanism 3 includes a motor rotor 301, a stabilizing groove 302, a counterweight block 303, a hollow hole 304, a moving groove 305, a moving opening 306, a return spring 307, a locking block 308, and a protrusion 309.

[0024] In one embodiment, the bottom outer wall of the motor front cover 101 is fixedly connected to one side of the extended internal thread block 102, and three sets of extended internal thread blocks 102 are provided. The top outer wall of the motor front cover 101 is fixedly connected to one side of the first internal thread mounting block 103.

[0025] Specifically: Three sets of extended internal thread blocks 102 are provided, and the three sets of extended internal thread blocks 102 are bolted to the external device, which allows the user to easily remove and replace the motor without completely disassembling the whole machine, reducing the difficulty of rework. At the same time, the user can install and prepare the gearbox of the whole machine in advance, without having to wait until the motor is needed to arrange it, thereby improving the user's delivery capacity.

[0026] In one embodiment, the inner wall of the first internal thread mounting block 103 is threadedly connected to the outer wall of the mounting thread rod 104, and the inner wall of the motor front end cover 101 is provided with a ball bearing.

[0027] Specifically, the installation of the threaded rod 104 facilitates the assembly and disassembly of the entire device.

[0028] In one embodiment, the top of the motor front end cover 101 is movably connected to the bottom of the motor rear end cover 201, and the outer wall of the motor rear end cover 201 is fixedly connected to one side of the second internal thread mounting block 202, and the inner wall of the second internal thread mounting block 202 is threadedly connected to the outer wall of the mounting thread rod 104.

[0029] Specifically: The two ends of the motor rotor 301 are connected to the interior of the motor front cover 101 and the motor rear cover 201, respectively. At the same time, the motor stator 203 covers the outer wall of the motor rotor 301. The threaded rod 104 is used to penetrate the interior of the first internal threaded mounting block 103 and enter the interior of the second internal threaded mounting block 202. Rotating the threaded rod 104 stabilizes the motor front cover 101 and the motor rear cover 201, which facilitates the overall assembly of the device.

[0030] In one embodiment, the top of the motor rear end cover 201 is fixedly connected to the bottom of the exhaust fan 204, and the inner wall of the motor rear end cover 201 is engaged with the top of the motor stator 203, the bottom of the motor stator 203 is engaged with the inner wall of the motor front end cover 101, and a ball bearing is provided on the inner wall of the motor rear end cover 201.

[0031] Specifically: the exhaust fan 204 facilitates the removal of heat from inside the device.

[0032] In one embodiment, the inner wall of the motor stator 203 is rotatably connected to the outer wall of the motor rotor 301, and the top outer wall of the motor rotor 301 is rotatably connected to the inner wall of the motor rear end cover 201 via ball bearings, and the bottom outer wall of the motor rotor 301 is rotatably connected to the inner wall of the motor front end cover 101 via ball bearings.

[0033] Specifically: the use of ball bearings ensures the stability of the motor rotor 301 during rotation.

[0034] In one embodiment, a stabilizing groove 302 is provided on the bottom outer wall of the motor rotor 301, a hollow hole 304 is provided inside the counterweight block 303, and the inner wall of the hollow hole 304 is movably connected to the outer wall of the motor rotor 301. A moving groove 305 is provided on the inner wall of the hollow hole 304, and a moving opening 306 is provided at the bottom of the moving groove 305.

[0035] Specifically: The detachable design of the counterweight 303 facilitates the replacement of counterweights 303 of different weights.

[0036] In one embodiment, the inner wall of the moving groove 305 is fixedly connected to one end of the return spring 307, and the other end of the return spring 307 is fixedly connected to one side of the locking block 308. The outer wall of the locking block 308 is movably connected to the inner wall of the moving groove 305, and the outer wall of the locking block 308 is movably connected to the inner wall of the stabilizing groove 302. The bottom wall of the locking block 308 is fixedly connected to the top of the protrusion 309, and the outer wall of the protrusion 309 is movably connected to the outer wall of the moving port 306.

[0037] Specifically: the reset spring 307 drives the locking block 308 to move into the inside of the stabilizing groove 302, thereby stabilizing the motor rotor 301 and the counterweight 303. The counterweight 303 is installed at the bottom of the motor rotor 301, thereby increasing the inertia of the device.

[0038] Working principle: When an increase in inertia is required, the bottom of the motor rotor 301 is inserted into the hollow hole 304, and the protrusion 309 is engaged, causing it to move inside the moving port 306. Simultaneously, this moves the locking block 308 inside the moving groove 305. The movement of the locking block 308 compresses the return spring 307. As the counterweight 303 moves, the locking block 308 moves towards the stabilizing groove 302. When the locking block 308 aligns with the stabilizing groove 302, the protrusion 309 is released, and the return spring 307 resets the locking block 308 to the stabilizing position. The groove 302 is used to stabilize the motor rotor 301 and the counterweight 303. The two ends of the motor rotor 301 are connected to the interior of the motor front cover 101 and the motor rear cover 201, respectively. At the same time, the motor stator 203 covers the outer wall of the motor rotor 301. The mounting threaded rod 104 passes through the interior of the first internal thread mounting block 103 and enters the interior of the second internal thread mounting block 202. The mounting threaded rod 104 is rotated to stabilize the motor front cover 101 and the motor rear cover 201. The exhaust fan 204 is turned on to generate exhaust force, thereby extracting the heat inside the device.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A motor with added counterweights, characterized in that, include: The front cover mechanism (1) includes a motor front cover (101), an extended internal thread block (102), a first internal thread mounting block (103), and a mounting thread rod (104). The front cover mechanism (1) is provided with a rear cover mechanism (2) at its top. The rear cover mechanism (2) includes a motor rear cover (201), a second internal thread mounting block (202), a motor stator (203), and an exhaust fan (204). The rear cover mechanism (2) is provided with a rotor mechanism (3) inside. The rotor mechanism (3) includes a motor rotor (301), a stabilizing groove (302), a counterweight (303), a hollow hole (304), a moving groove (305), a moving opening (306), a return spring (307), a locking block (308), and a protrusion (309).

2. The motor with added counterweight according to claim 1, characterized in that: The bottom outer wall of the motor front cover (101) is fixedly connected to one side of the extended internal thread block (102), and three sets of extended internal thread blocks (102) are provided. The top outer wall of the motor front cover (101) is fixedly connected to one side of the first internal thread mounting block (103).

3. The motor with added counterweight according to claim 2, characterized in that: The inner wall of the first internal thread mounting block (103) is threadedly connected to the outer wall of the mounting thread rod (104), and the inner wall of the motor front end cover (101) is provided with a ball bearing.

4. The motor with added counterweight according to claim 1, characterized in that: The top of the motor front end cover (101) is movably connected to the bottom of the motor rear end cover (201), and the outer wall of the motor rear end cover (201) is fixedly connected to one side of the second internal thread mounting block (202), and the inner wall of the second internal thread mounting block (202) is threadedly connected to the outer wall of the mounting thread rod (104).

5. A motor with added counterweights according to claim 4, characterized in that: The top of the motor rear end cover (201) is fixedly connected to the bottom of the exhaust fan (204), and the inner wall of the motor rear end cover (201) is engaged with the top of the motor stator (203). The bottom of the motor stator (203) is engaged with the inner wall of the motor front end cover (101). The inner wall of the motor rear end cover (201) is provided with a ball bearing.

6. The motor with added counterweight according to claim 1, characterized in that: The inner wall of the motor stator (203) is rotatably connected to the outer wall of the motor rotor (301), and the top outer wall of the motor rotor (301) is rotatably connected to the inner wall of the motor rear end cover (201) through ball bearings. The bottom outer wall of the motor rotor (301) is rotatably connected to the inner wall of the motor front end cover (101) through ball bearings.

7. A motor with added counterweights according to claim 1, characterized in that: The bottom outer wall of the motor rotor (301) is provided with a stabilizing groove (302), the counterweight (303) is provided with a hollow hole (304), and the inner wall of the hollow hole (304) is movably connected to the outer wall of the motor rotor (301). The inner wall of the hollow hole (304) is provided with a moving groove (305), and the bottom of the moving groove (305) is provided with a moving opening (306).

8. A motor with added counterweight according to claim 7, characterized in that: The inner wall of the moving groove (305) is fixedly connected to one end of the return spring (307), and the other end of the return spring (307) is fixedly connected to one side of the locking block (308). The outer wall of the locking block (308) is movably connected to the inner wall of the moving groove (305), and the outer wall of the locking block (308) is movably connected to the inner wall of the stabilizing groove (302). The bottom wall of the locking block (308) is fixedly connected to the top of the protrusion (309), and the outer wall of the protrusion (309) is movably connected to the outer wall of the moving port (306).