A motor soft starter
By setting mounting holes and strip holes on the mounting plate of the motor soft starter, and utilizing the design of the fixed cover and hinge plate, the instability problem of the motor soft starter during installation and disassembly is solved, achieving stable installation and convenient disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LUOKA ELECTRIC CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-26
Smart Images

Figure CN224418704U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soft starter technology, and more specifically to a motor soft starter. Background Technology
[0002] In the use of motors, a motor soft starter is often provided to control and start the motor. Generally, it achieves a smooth start and stop process by gradually increasing the motor current and torque, so as to reduce the mechanical and electrical stress of the motor and system, extend the service life of the motor, and provide better protection and control characteristics.
[0003] Motor soft starters typically have mounting plates on both the top and bottom, with two holes drilled in them for bolts to pass through and secure them. However, this structure is too cumbersome to install and disassemble. Some modern motor soft starters have modified the mounting holes to include a round hole and a key-shaped hole that extends in a strip with a width smaller than the diameter. This allows the bolt head to pass through the round hole during installation, and then the strip can be slid to engage with the bolt's shank. Disassembly is as simple as pulling it up. While this structure facilitates installation, it sacrifices stability. After installation, the motor soft starter is prone to bouncing up or even falling off due to vibration. Utility Model Content
[0004] In summary, to overcome the shortcomings of the prior art, this utility model provides a motor soft starter that is easy to assemble and disassemble and is stable.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a motor soft starter, comprising a soft starter body, wherein each of the upper and lower sections of the soft starter body is provided with a mounting plate, the mounting plate is provided with a mounting hole and a strip hole with a width smaller than the mounting hole and communicating with the mounting hole from above, and further comprising a fixing cover, the number of fixing covers being consistent with the number of mounting holes, the fixing cover being hinged to the mounting plate, the hinge position of the fixing cover and the mounting plate being located at the mounting hole, and a fixing groove adapted to the head of a bolt being provided between the fixing cover and the mounting plate.
[0006] With this setup, during installation, you can first align the mounting hole with the head of the bolt and press it in using the conventional installation method. Then, release the soft starter, and it will fall due to gravity. At this point, the bolt will enter the slotted hole. Afterward, you can control the fixing cover to swing on the mounting plate, covering the head of the bolt in the fixing groove. This way, the bolt will be restricted in the fixing and cannot bounce off, making it more stable. When disassembling, you only need to pull up the fixing cover to disassemble in the conventional way. It is easy to assemble and disassemble without the need for additional tools.
[0007] Furthermore, the mounting plate has a hinge plate at one end facing the fixing cover, located on both sides of the strip hole. The fixing groove is located between the hinge plates on both sides. The fixing cover is hinged to the hinge plate. A baffle is provided below the fixing cover facing the mounting hole.
[0008] With this setup, the fixing cover can be installed using conventional methods such as passing the hinge shaft through the hinge plate and fixing cover, which is more convenient. After installation, the fixing groove is in a fixed state, making it easier for the bolt head to enter. The fixing cover only needs to block the outlet of the fixing groove with the position of the baffle.
[0009] Furthermore, the fixed cover is hinged to the hinge plates on both sides of each of the strip holes.
[0010] With this configuration, the hinge plate is positioned between the two hinge plates, meaning its width is less than the distance between them. This ensures that the hinge plate, regardless of its shape, will no longer obstruct the swing of the fixed cover, allowing for smoother movement.
[0011] Furthermore, a positioning block is provided on the side of the hinge plate facing the strip hole, and when the baffle is located below the fixing groove, the positioning block is located on the side of the fixing cover facing away from the strip hole.
[0012] With this setup, during installation, the fixing cover will be pressed in through the positioning block to block the fixing groove. In this way, the positioning block can limit the fixing cover, preventing it from bouncing up due to vibration, making it more stable. When disassembling, it can be forcibly pulled up.
[0013] Furthermore, the positioning block is an arc-shaped elongated strip.
[0014] This design, with its curved, elongated shape, facilitates the pressing and pulling processes, making operation convenient and the structure simple.
[0015] Furthermore, the bottom surface of the baffle is provided with a pull plate.
[0016] With this design, when lifting the fixed cover, you can pull it up by holding the pull plate. The pull plate increases the point of force application, making it easier to operate.
[0017] Furthermore, the baffle is located at the position of the mounting hole.
[0018] With this design, if the cover is closed during installation, there is no need to pull it up. The bolt head will naturally push it out as it passes through the mounting hole during installation, making the operation more convenient.
[0019] Furthermore, the width of the baffle is smaller than the mounting hole.
[0020] With this configuration, the baffle can be inserted into the mounting hole and press against the mounting surface behind it. The head of the bolt will not contact the bottom surface of the baffle and will not lift it up, making it more stable.
[0021] Furthermore, the side of the baffle facing the strip hole is an inclined surface with its inner edge sloping downwards.
[0022] With this design, when the bolt head vibrates slightly in the fixing groove and hits the inclined surface, it will be pulled tight along the inclined surface, further preventing it from being shaken out and making it more stable. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 1 .
[0024] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model. Figure 2 .
[0025] Figure 3 This is a partial exploded view of an embodiment of the present invention.
[0026] Figure 4 for Figure 3 Enlarged view of part A.
[0027] The labels in the diagram mean: 1. Soft starter body, 2. Mounting plate, 201. Mounting hole, 202. Strip hole, 203. Hinge plate, 2031. Positioning block, 3. Fixing cover, 301. Fixing groove, 302. Baffle, 303. Pull plate. Detailed Implementation
[0028] This specific embodiment is merely an explanation of the present embodiment and is not intended to limit the present embodiment. After reading this specification, those skilled in the art can make modifications to the present embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present embodiment.
[0029] Referring to the accompanying drawings, this utility model provides the following technical solution: a motor soft starter, including a soft starter body 1, with a mounting plate 2 respectively provided on the upper and lower sections of the soft starter body 1. The mounting plate 2 is provided with a mounting hole 201 and a strip hole 202 with a width smaller than the mounting hole 201 and communicating with the mounting hole 201 from above. It also includes a fixing cover 3, the number of fixing covers 3 being the same as the number of mounting holes 201. The fixing cover 3 is hinged to the mounting plate 2, and the hinge position of the fixing cover 3 and the mounting plate 2 is located at the mounting hole 201. A fixing groove 301 adapted to the head of a bolt is provided between the fixing cover 3 and the mounting plate 2.
[0030] With this setup, during installation, you can first align the mounting hole 201 with the head of the bolt and press it in using the conventional installation method. Then, release the soft starter, and it will fall due to gravity. At this time, the bolt will enter the slotted hole 202. After that, you can control the fixing cover 3 to swing on the mounting plate 2, covering the head of the bolt in the fixing groove 301. In this way, the bolt will be restricted in the fixing and cannot bounce off, making it more stable. When disassembling, you only need to pull up the fixing cover 3 to disassemble it in the conventional way. It is easy to disassemble and assemble without the need for additional tools.
[0031] In a preferred embodiment, the mounting plate 2 facing the fixing cover 3 has a hinge plate 203 located on both sides of the strip hole 202. The fixing groove 301 is located between the hinge plates 203 on both sides. The fixing cover 3 is hinged to the hinge plate 203. A baffle 302 is provided below the fixing cover 3 facing the mounting hole 201.
[0032] With this setup, the fixing cover 3 can be installed using conventional methods such as passing the hinge shaft through the hinge plate 203 and the fixing cover 3, which is more convenient. After installation, the fixing groove 301 is in a fixed state, making it easier for the bolt head to enter. The fixing cover 3 only needs to block the outlet of the fixing groove 301 with the position of the baffle 302.
[0033] In this preferred embodiment, the fixed cover 3 is hinged to the hinge plates 203 on both sides of each strip hole 202.
[0034] With this configuration, the hinge plate 203 is hinged to both of them at a position between them, meaning its width is less than the distance between them. This way, the hinge plate 203, regardless of its shape, will no longer hinder the swing of the fixed cover 3, making the movement smoother.
[0035] In a preferred embodiment, the hinge plate 203 is provided with a positioning block 2031 on the side facing the strip hole 202. When the baffle 302 is located below the fixing groove 301, the positioning block 2031 is located on the side of the fixing cover 3 facing away from the strip hole 202.
[0036] With this configuration, during installation, the fixing cover 3 will pass through the positioning block 2031 and be pressed in to block the fixing groove 301. In this way, the positioning block 2031 can play a limiting role for the fixing cover 3, preventing the fixing cover 3 from bouncing up due to vibration, making it more stable. When disassembling, it can be forcibly pulled up.
[0037] In this preferred embodiment, the positioning block 2031 is an arc-shaped elongated strip.
[0038] This design, with its curved, elongated shape, facilitates the pressing and pulling processes, making operation convenient and the structure simple.
[0039] In this preferred embodiment, the bottom surface of the baffle 302 is provided with a pull plate 303.
[0040] With this configuration, when pulling up the fixed cover 3, you can pull it up by holding the pull plate 303. The pull plate 303 increases the force application point, making it more convenient to operate.
[0041] In this preferred embodiment, the baffle 302 is located at the position of the mounting hole 201.
[0042] With this setup, if the fixing cover 3 is in the closed state during installation, there is no need to pull it up. When the bolt head passes through the mounting hole 201 during installation, it will naturally push it out, making the operation more convenient.
[0043] In this preferred embodiment, the width of the baffle 302 is smaller than that of the mounting hole 201.
[0044] With this configuration, the baffle 302 can be inserted into the mounting hole 201 and press against the mounting surface behind it. The head of the bolt will not contact the bottom surface of the baffle 302 and will not lift it up, making it more stable.
[0045] In this preferred embodiment, the side of the baffle 302 facing the strip hole 202 is an inclined surface with the inner side sloping downwards.
[0046] With this design, when the bolt head vibrates slightly in the fixing groove 301 and hits the inclined surface, it will be pulled tight along the inclined surface, further preventing it from being shaken out and making it more stable.
[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be included within the scope of protection of the present invention.
Claims
1. A motor soft-starter comprising a soft-starter body, upper and lower sections of the soft-starter body are respectively provided with an installation plate, the installation plate is provided with an installation hole and a strip-shaped hole with a width less than the installation hole and communicating with the installation hole above, characterized in that: It also includes a fixing cover, the number of which is the same as the number of mounting holes. The fixing cover is hinged to the mounting plate, and the hinge position between the fixing cover and the mounting plate is located at the mounting hole. A fixing groove adapted to the head of the bolt is provided between the fixing cover and the mounting plate.
2. The motor soft starter according to claim 1, characterized in that: The mounting plate has hinge plates at one end facing the fixing cover, located on both sides of the strip hole. The fixing groove is located between the two hinge plates. The fixing cover is hinged to the hinge plates. A baffle is provided below the fixing cover facing the mounting hole.
3. A motor soft starter according to claim 2, characterized in that: The fixed cover is hinged to the hinge plates on both sides of each of the strip holes.
4. A motor soft starter according to claim 3, characterized in that: The hinge plate has a positioning block on the side facing the strip hole. When the baffle is below the fixing groove, the positioning block is located on the side of the fixing cover facing away from the strip hole.
5. A motor soft starter according to claim 4, characterized in that: The positioning block is an arc-shaped elongated strip.
6. A motor soft starter according to claim 2, characterized in that: The bottom surface of the baffle is provided with a pull plate.
7. A motor soft starter according to claim 2, characterized in that: The baffle is located at the position of the mounting hole.
8. A motor soft starter according to claim 7, characterized in that: The width of the baffle is smaller than the mounting hole.
9. A motor soft starter according to claim 8, characterized in that: The side of the baffle facing the strip hole is an inclined surface with the inner edge sloping downwards.