Sealing structure of motor controller

Abstract

The utility model relates to the technical field of motor controllers, in particular to a sealing structure of a motor controller, which comprises a controller body, the controller body is detachably connected with a protective shell, the protective shell is provided with an abutting structure, the abutting structure comprises a sliding frame connected in the protective shell in a sliding manner, and the sliding frame is provided with a sealing cover. A sealing ring is fixedly connected to the sliding frame, a first lead screw is rotationally connected to the protective shell, the sliding frame is in threaded connection with the first lead screw, a connecting shaft is rotationally connected to the protective shell, a stop block is fixedly connected to the bottom of the connecting shaft, and an anti-disengaging groove is formed in the sliding frame. The sliding frame is driven by the first lead screw to drive the sealing ring to abut against the sealing groove in the controller body, and the situation that due to the fact that gaps exist between the sealing ring and the controller body, external water vapor, dust and other impurities enter the controller body through the gaps, and normal work of electronic elements is affected is avoided.

Description

Technical Field

[0001] This utility model relates to a motor controller, specifically a sealed structure for a motor controller, and belongs to the field of motor controller technology. Background Technology

[0002] A motor controller is an electronic device used to control the operation of a motor. It receives control signals from the outside (such as speed commands, direction commands, etc.) and uses internal circuits and algorithms to precisely control the motor to achieve functions such as starting, stopping, accelerating, decelerating, and reversing.

[0003] However, most motor controllers are sealed using simple rubber sealing rings. These rings are typically placed between the protective housing and the motor controller. Since there is no external force to compress them, the sealing rings are prone to displacement under the influence of long-term vibration, temperature changes, and other factors. This results in gaps between the sealing rings and the motor controller, allowing external moisture, dust, and other impurities to easily enter the motor controller and affect the normal operation of electronic components. Utility Model Content

[0004] The purpose of this invention is to provide a sealing structure for a motor controller to solve the above-mentioned problems. The first lead screw drives the slide frame to make the sealing ring abut against the sealing groove on the controller body, thereby preventing gaps between the sealing ring and the controller body from allowing external moisture, dust and other impurities to enter the controller body through these gaps and affect the normal operation of electronic components.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a sealing structure for a motor controller, comprising a controller body, a protective shell detachably connected to the controller body, a clamping structure provided on the protective shell, the clamping structure comprising a slide frame slidably connected inside the protective shell, a sealing ring fixedly connected to the slide frame, a first lead screw rotatably connected to the protective shell, the slide frame being threadedly connected to the first lead screw, a connecting shaft rotatably connected to the protective shell, a stop block fixedly connected to the bottom of the connecting shaft, and an anti-disengagement groove provided on the slide frame.

[0006] Preferably, a guide post is fixedly connected inside the protective shell, and the sliding frame is slidably connected to the guide post.

[0007] Preferably, a rotating rod is fixedly connected to the connecting shaft, and the first lead screw is provided with an internal hexagonal groove for use with an internal hexagonal wrench.

[0008] Preferably, the connecting shaft and the protective shell are fixed together by a limiting structure. The limiting structure includes a guide sleeve fixedly connected to the protective shell, a slide rod slidably connected inside the guide sleeve, a limiting plate fixedly connected to the slide rod, and two limiting grooves on the connecting shaft. The limiting plate engages with one of the limiting grooves.

[0009] Preferably, a first spring is connected between the slide rod and the guide sleeve, with one end of the first spring fixedly connected to the slide rod and the other end fixedly connected to the guide sleeve.

[0010] Preferably, a pull rod is fixedly connected to the slide rod, and the pull rod abuts against the guide sleeve.

[0011] Preferably, the protective shell and the controller body are installed through an installation structure, the installation structure including a guide frame fixedly connected to the protective shell, a slider slidably connected inside the guide frame, an installation block slidably connected on the slider, and the installation block sliding with the controller body.

[0012] Preferably, the mounting block has a trapezoidal cross-section, and a second spring is connected between the mounting block and the slider. One end of the second spring is fixedly connected to the mounting block, and the other end is fixedly connected to the slider.

[0013] Preferably, a second lead screw is rotatably connected to the slider, and the second lead screw is threadedly connected to the guide frame.

[0014] Preferably, a connecting rod is fixedly connected to the mounting block, the connecting rod is slidably connected to the slider, and a pull plate is fixedly connected to the connecting rod, the pull plate abutting against the guide frame.

[0015] The beneficial effects of this utility model are as follows: a protective shell is detachably connected to the controller body, the protective shell is provided with a clamping structure, a sealing ring is fixedly connected to the slide frame, a first lead screw is rotatably connected to the protective shell, the slide frame is threadedly connected to the first lead screw, a connecting shaft is rotatably connected to the protective shell, a stop block is fixedly connected to the bottom of the connecting shaft, and an anti-disengagement groove is provided on the slide frame. The first lead screw drives the slide frame to cause the sealing ring to clamp against the sealing groove on the controller body, thus preventing gaps between the sealing ring and the controller body from causing external moisture, dust, and other impurities to enter the controller body through these gaps and affect the normal operation of electronic components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below;

[0018] Figure 3This is a schematic diagram of the connection structure between the sliding frame and the protective shell of this utility model;

[0019] Figure 4 for Figure 3 The enlarged schematic diagram of section B is shown below;

[0020] Figure 5 This is a schematic diagram of the connection structure between the guide post and the protective shell of this utility model;

[0021] Figure 6 for Figure 5 The enlarged schematic diagram of section C is shown.

[0022] In the diagram: 1. Controller body; 2. Protective shell; 3. Clamping structure; 301. Sliding frame; 302. Sealing ring; 303. First lead screw; 304. Guide post; 305. Connecting shaft; 306. Stop block; 307. Rotating rod; 308. Anti-detachment groove; 4. Limiting structure; 401. Guide sleeve; 402. Sliding rod; 403. Limiting plate; 404. Limiting groove; 405. First spring; 406. Pull rod; 5. Mounting structure; 501. Guide frame; 502. Sliding block; 503. Mounting block; 504. Second spring; 505. Second lead screw; 506. Connecting rod; 507. Pull plate. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this utility model. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0024] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] Please see Figure 1-6As shown, a sealing structure for a motor controller includes a controller body 1, a protective shell 2 detachably connected to the controller body 1, a clamping structure 3 provided on the protective shell 2, the clamping structure 3 including a sliding frame 301 slidably connected inside the protective shell 2, a sealing ring 302 fixedly connected to the sliding frame 301, a first lead screw 303 rotatably connected to the protective shell 2, the sliding frame 301 and the first lead screw 303 being threadedly connected, a connecting shaft 305 rotatably connected to the protective shell 2, a stop block 306 fixedly connected to the bottom of the connecting shaft 305, and an anti-disengagement groove 308 provided on the sliding frame 301.

[0026] As a technical optimization of this utility model, a guide post 304 is fixedly connected inside the protective shell 2, and the sliding frame 301 is slidably connected to the guide post 304. A rotating rod 307 is fixedly connected to the connecting shaft 305. The first lead screw 303 is provided with an internal hexagonal groove for use with an internal hexagonal wrench. After the protective shell 2 is installed, the internal hexagonal wrench can be inserted into the internal hexagonal groove on the first lead screw 303. By rotating the first lead screw 303, the first lead screw 303 drives the sliding frame 301 to move downward. When the sliding frame 301 moves, it will slide with the guide post 304. The setting of the guide post 304 makes the movement of the sliding frame 301 more stable. At this time, the sliding frame 301 will drive the sealing ring 302 to abut against the sealing groove on the controller body 1, so as to prevent the sealing ring 302 from having gaps with the controller body 1, which would cause external moisture, dust and other impurities to enter the controller body 1 through these gaps and affect the normal operation of electronic components.

[0027] As a technical optimization of this utility model, the connecting shaft 305 and the protective shell 2 are fixed together by a limiting structure 4. The limiting structure 4 includes a guide sleeve 401 fixedly connected to the protective shell 2. A slide rod 402 is slidably connected inside the guide sleeve 401. A limiting plate 403 is fixedly connected to the slide rod 402. The connecting shaft 305 is provided with two limiting grooves 404. The limiting plate 403 engages with one of the limiting grooves 404. A first spring 405 is connected between the slide rod 402 and the guide sleeve 401. One end of the first spring 405 is fixedly connected to the slide rod 402, and the other end is fixedly connected to the guide sleeve 401. A pull rod 406 is fixedly connected to the slide rod 402. The pull rod 406 abuts against the guide sleeve 401. When it is necessary to adjust the sealing ring... When replacing 302, the sliding rod 402 is pulled by the pull rod 406 to slide against the guide sleeve 401. When the sliding rod 402 slides, the first spring 405 contracts, and at the same time, the sliding rod 402 drives the limiting plate 403 to move, so that the limiting plate 403 is no longer engaged with the limiting groove 404. At this time, the connecting shaft 305 can be rotated 90 degrees by the rotating rod 307. After rotation, the pull rod 406 can be released, so that the limiting plate 403 is engaged with the connecting shaft 305 under the action of the first spring 405. The engagement of the limiting plate 403 with the connecting shaft 305 makes it easy to fix the connected shaft 305 after rotation. At this time, the stop block 306 is no longer located in the anti-disengagement groove 308. At this time, the sliding frame 301 can be driven by the first lead screw 303 to slide off the sliding frame 301 from the first lead screw 303 and the guide post 304, so that the sealing ring 302 can be replaced.

[0028] As a technical optimization of this utility model, the protective shell 2 and the controller body 1 are installed via an installation structure 5. The installation structure 5 includes a guide frame 501 fixedly connected to the protective shell 2, a slider 502 slidably connected within the guide frame 501, and an installation block 503 slidably connected to the slider 502. The installation block 503 slides with the controller body 1. The cross-section of the installation block 503 is trapezoidal. A second spring 504 is connected between the installation block 503 and the slider 502. One end of the second spring 504 is fixedly connected to the installation block 503, and the other end is fixedly connected to the slider 502. A second lead screw 505 is rotatably connected to the slider 502 and threadedly connected to the guide frame 501. A connecting rod 506 is fixedly connected to the installation block 503 and slidably connected to the slider 502. A pull rod is fixedly connected to the connecting rod 506. Plate 507, the pull plate 507 abuts against guide frame 501. When the protective shell 2 is installed on the controller body 1, the sealing ring 302 on the protective shell 2 engages with the sealing groove on the controller body 1. When the guide frame 501 drives the inclined side of the mounting block 503 to abut against the edge of the controller body 1, the mounting block 503 will retract into the slider 502, and the second spring 504 will retract. After the sealing ring 302 is engaged, the slider 502 will slide out of the mounting block 503 and engage with the controller body 1 under the action of the second spring 504. At this time, an internal hexagonal wrench can be inserted into the internal hexagonal groove on the second lead screw 505. By rotating the second lead screw 505, the second lead screw 505 and the guide frame 501 are threaded together, causing the slider 502 and the mounting block 503 to move upward, so that the mounting block 503 abuts against the controller body 1. By the mounting block 503 abutting against the controller body 1, it is convenient to install the protective shell 2 and the controller body 1.

[0029] In use, when the protective shell 2 is installed onto the controller body 1, the sealing ring 302 on the protective shell 2 engages with the sealing groove on the controller body 1. When the guide frame 501 drives the inclined side of the mounting block 503 to abut against the edge of the controller body 1, the mounting block 503 retracts into the slider 502, and the second spring 504 retracts. After the sealing ring 302 engages, the slider 502 slides out from the mounting block 503 and engages with the controller body 1 under the action of the second spring 504. At this time, an internal hexagonal wrench can be inserted into the internal hexagonal groove on the second lead screw 505. By rotating the second lead screw 505, the threaded engagement between the second lead screw 505 and the guide frame 501 causes the slider 502 and the mounting block 503 to move upward, making the mounting block 503 abut against the controller body 1. This abutment facilitates the installation of the protective shell 2 between the protective shell 2 and the controller body 1. After the protective shell 2 is installed, an internal hexagonal wrench can be inserted into the internal hexagonal groove on the first lead screw 303. By rotating the first lead screw 303, the threaded drive of the first lead screw 303 causes the sliding frame 301 to move downward. During this movement, the sliding frame 301 will engage with the guide post 304. The sliding guide post 304 makes the sliding frame 301 move more smoothly. At this time, the sliding frame 301 will drive the sealing ring 302 to abut against the sealing groove on the controller body 1, preventing gaps between the sealing ring 302 and the controller body 1 from allowing external moisture, dust and other impurities to enter the controller body 1 through these gaps and affect the normal operation of electronic components. When the sealing ring 302 needs to be replaced, the sliding rod 406 pulls the sliding rod 402 and the guide sleeve 401 to slide. When the sliding rod 402 slides, the first spring 405 contracts, and at the same time the sliding rod 402 drives the limit plate 403 to move. This causes the limiting plate 403 to no longer engage with the limiting groove 404. At this time, the connecting shaft 305 can be rotated 90 degrees by the rotating rod 307. After rotation, the pull rod 406 can be released, causing the limiting plate 403 to engage with the connecting shaft 305 under the action of the first spring 405. The engagement of the limiting plate 403 with the connecting shaft 305 facilitates the fixation of the rotated connecting shaft 305. At this time, the stop block 306 is no longer located in the anti-disengagement groove 308. At this time, the sliding frame 301 can be driven by the first lead screw 303, causing the sliding frame 301 to slide off the first lead screw 303 and the guide post 304, allowing the sealing ring 302 to be replaced.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A sealed structure for a motor controller, comprising a controller body (1), characterized in that: The controller body (1) is detachably connected to a protective shell (2). The protective shell (2) is provided with a clamping structure (3). The clamping structure (3) includes a sliding frame (301) slidably connected inside the protective shell (2). A sealing ring (302) is fixedly connected to the sliding frame (301). A first lead screw (303) is rotatably connected to the protective shell (2). The sliding frame (301) is threadedly connected to the first lead screw (303). A connecting shaft (305) is rotatably connected to the protective shell (2). A stop block (306) is fixedly connected to the bottom of the connecting shaft (305). An anti-detachment groove (308) is provided on the sliding frame (301).

2. The sealing structure of a motor controller according to claim 1, characterized in that: The protective shell (2) is fixedly connected to a guide post (304), and the sliding frame (301) is slidably connected to the guide post (304).

3. The sealing structure of a motor controller according to claim 2, characterized in that: A rotating rod (307) is fixedly connected to the connecting shaft (305), and the first lead screw (303) is provided with an internal hexagonal groove for use with an internal hexagonal wrench.

4. The sealing structure of a motor controller according to claim 3, characterized in that: The connecting shaft (305) and the protective shell (2) are fixed together by a limiting structure (4). The limiting structure (4) includes a guide sleeve (401) fixedly connected to the protective shell (2). A slide rod (402) is slidably connected inside the guide sleeve (401). A limiting plate (403) is fixedly connected to the slide rod (402). The connecting shaft (305) is provided with two limiting grooves (404). The limiting plate (403) engages with one of the limiting grooves (404).

5. The sealing structure of a motor controller according to claim 4, characterized in that: A first spring (405) is connected between the slide rod (402) and the guide sleeve (401). One end of the first spring (405) is fixedly connected to the slide rod (402), and the other end is fixedly connected to the guide sleeve (401).

6. The sealing structure of a motor controller according to claim 5, characterized in that: A pull rod (406) is fixedly connected to the slide rod (402), and the pull rod (406) abuts against the guide sleeve (401).

7. The sealing structure of a motor controller according to claim 1, characterized in that: The protective shell (2) and the controller body (1) are installed together by an installation structure (5). The installation structure (5) includes a guide frame (501) fixedly connected to the protective shell (2). A slider (502) is slidably connected inside the guide frame (501). An installation block (503) is slidably connected on the slider (502). The installation block (503) slides with the controller body (1).

8. The sealing structure of a motor controller according to claim 7, characterized in that: The mounting block (503) has a trapezoidal cross-section. A second spring (504) is connected between the mounting block (503) and the slider (502). One end of the second spring (504) is fixedly connected to the mounting block (503), and the other end is fixedly connected to the slider (502).

9. The sealing structure of a motor controller according to claim 8, characterized in that: A second lead screw (505) is rotatably connected to the slider (502), and the second lead screw (505) is threadedly connected to the guide frame (501).

10. The sealing structure of a motor controller according to claim 9, characterized in that: A connecting rod (506) is fixedly connected to the mounting block (503). The connecting rod (506) is slidably connected to the slider (502). A pull plate (507) is fixedly connected to the connecting rod (506). The pull plate (507) abuts against the guide frame (501).

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