Waterproof motor controller
By designing the wire harness through the wire holes and ducts of the cover plate in the motor controller and filling in the sealant structure, the water leakage problem caused by shaking during driving is solved, and a good sealing effect is achieved.
Patent Information
- Application Number
- CN202421778197.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-25
AI Technical Summary
During driving, existing motor controllers are prone to loose gaps between the connector and the controller due to jitter, resulting in water leakage.
A waterproof motor controller is designed, which includes a shell with an open top and a controller module installed in the shell. It passes through the wire harness through the wire holes and wire slots of the cover plate, and fills the sealant in the wire slot to form a good sealing effect.
It achieves a good seal between the wire harness and the cover plate, avoids water leakage, and the combination of sealant and wire trough is more stable and reliable, improving the overall sealing effect.
Smart Images
Figure CN223007728U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of controllers, and particularly relates to a waterproof motor controller. Background Art
[0002] With the increasing challenges faced by global energy and the environment, electric drive systems are gradually replacing traditional fuel drive systems. As a key functional component in the electric drive system, the motor controller is used to control the motor to achieve purposes such as starting, running, speed regulation, and stopping according to the operating requirements of the whole machine, and has achieved great development and wide application. The motor controller needs to be connected to the motor, battery, and control system, and usually has reserved connectors. At present, there are two ways to reserve connectors. One is to directly fix the connector on the controller. The connector and the controller in this structure belong to a hard connection. The vibration during vehicle driving will cause the wire to pull the connector, easily forming a loose gap between the connector and the controller, resulting in water leakage. The other is to connect the wire out of the controller and then connect the wire to the connector. This method realizes the soft connection between the controller and the connector, but the connector wire harness of this structure is more, and how to seal the wire harness and the controller has become an urgent problem to be solved. Summary of the Utility Model
[0003] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is: how to provide a waterproof motor controller with a clever structural design, not easy to leak water, and good sealing effect.
[0004] To solve the above technical problems, the utility model adopts the following technical solutions:
[0005] A waterproof motor controller, characterized in that it includes a housing with an open top and a controller module installed in the housing. The controller module includes a circuit board installed at the bottom of the housing and a connector connected to the circuit board through a wire harness; a cover plate is sealingly fitted on the open mouth of the housing. The top of the cover plate has a wire groove formed by depression. One end of the wire groove communicates with the edge of the cover plate, and the other end has an end plate integrally provided with the cover plate. The end plate has a through wire hole; the side wall of the wire groove has a groove extending circumferentially; the wire harness passes through the wire hole and the wire groove, and the wire groove is filled with sealant.
[0006] With the above structure, the wire harness passes through the wire hole and the wire groove of the cover plate, and the gap between the wire hole and the wire harness is filled with the sealant filled in the wire groove, so as to form a good seal between the wire harness and the cover plate. In addition, due to the groove extending circumferentially in the wire groove, the sealant enters the groove, making the combination of the sealant and the wire groove more stable and reliable in the length direction of the wire groove.
[0007] Further, the wire groove includes a semi-circular side wall at the bottom and two vertical side walls arranged tangentially; at least two of the grooves are arranged at intervals along the length direction of the wire groove.
[0008] Further, a sealing cover is fitted on the wire groove. A limiting plate perpendicular to the sealing cover and corresponding to the groove is arranged on the sealing cover. The limiting plate is fitted and inserted into the groove, and an arc-shaped groove facing the wire groove is formed in the middle.
[0009] Further, first blind holes formed by downward stretching are arranged on both sides of the wire groove on the cover plate; bolt holes corresponding to the first blind holes are arranged on the sealing cover, and the sealing cover is connected to the first blind holes by screws passing through the bolt holes.
[0010] In this way, by connecting the sealing cover to the first blind holes with screws, while ensuring the sealing at the screw connection points, the cover plate can also press the sealing glue, enabling the sealing glue to flow into the gaps between the wire harnesses under pressure, thereby forming a good seal.
[0011] Further, a first counterbore coaxially arranged is formed at the first blind hole; a second counterbore coaxially arranged is formed by deep drawing at the bolt hole, and the other side of the second counterbore forms a column shape and is arranged in cooperation with the first counterbore.
[0012] Further, a positioning groove extending along the outside of the wire groove is arranged on the cover plate; a convex rib cooperating with the positioning groove is arranged on the sealing cover.
[0013] Further, an installation groove matching the sealing cover is formed by concave formation on the cover plate, and the sealing cover is fitted on the installation groove and is flush with the cover plate.
[0014] Further, the housing is in a U-shaped groove shape, and sealing plates are installed at both ends; limiting strips arranged opposite to each other are arranged on the opposite side walls of the housing, and the limiting strips extend along the length direction of the housing at the open end of the housing; buckles corresponding to the limiting strips are arranged on both sides of the cover plate and are clamped on the limiting strips.
[0015] Further, second blind holes formed by inward deep drawing are arranged at both ends of the cover plate; bolt holes corresponding to the second blind holes are arranged on the sealing plate, and they are connected to the second blind holes by screws.
[0016] Further, a plurality of wiring copper columns for connecting power lines or bus bars are vertically arranged on the circuit board. Connection holes corresponding to the wiring copper columns are arranged on the cover plate, and the upper ends of the wiring copper columns pass through the connection holes.
[0017] In summary, the utility model has the advantages of ingenious structural design, not easy to leak water, good sealing effect, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of this embodiment.
[0019] Figure 2 is Figure 1 exploded structural schematic diagram of.
[0020] Figure 3 It is a schematic diagram of the structure of the wire groove part of the cover plate.
[0021] Figure 4 and Figure 5 is a schematic diagram of the structure of the sealing cover.
[0022] Figure 6 is a schematic diagram of the structure of the cover plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The present utility model will be further described in detail below in conjunction with the embodiments.
[0024] During specific implementation: As Figures 1 to 6 shown, a waterproof motor controller includes a housing 1 with an open top and a controller module 5 installed in the housing 1. The controller module 5 includes a circuit board 51 installed at the bottom of the housing 1 and a connector connected to the circuit board 51 through a wire harness. A plurality of wiring copper posts 52 for connecting power lines or busbars are vertically arranged on the circuit board 51; a cover plate 2 is sealingly fitted on the open mouth of the housing 1. The cover plate 2 has connection holes corresponding to the wiring copper posts 52, and the upper ends of the wiring copper posts 52 pass through the connection holes.
[0025] In this embodiment, the housing 1 is in a U-shaped groove shape, and sealing plates 4 are installed at both ends; limiting strips 11 are provided opposite to each other on the opposite side walls of the housing 1, and the limiting strips 11 extend along the length direction of the housing 1 at the open mouth of the housing 1; both sides of the cover plate 2 have buckles corresponding to the limiting strips 11 and are clamped on the limiting strips 11, as Figure 6 shown.
[0026] The top of the cover plate 2 has a wire groove 21 formed by depression. One end of the wire groove 21 communicates with the edge of the cover plate 2, and the other end has an end plate integrally provided with the cover plate 2. The end plate has a through hole 22; a groove 23 extending circumferentially is provided on the side wall of the wire groove 21; the wire harness passes through the through hole 22 and the wire groove 21, and the wire groove 21 is filled with sealant.
[0027] The wire groove 21 includes a semi-circular side wall at the bottom and two vertical side walls arranged tangentially; at least two grooves 23 are arranged at intervals along the length direction of the wire groove 21. A sealing cover 3 is fitted on the wire groove 21. A limiting plate 31 perpendicular to the sealing cover 3 is arranged corresponding to the groove 23. The limiting plate 31 is fitted and inserted into the groove 23, and an arc-shaped groove opposite to the wire groove 21 is formed in the middle. The cover plate 2 is concavely formed with a mounting groove matching the sealing cover 3. The sealing cover 3 is fitted on the mounting groove and is flush with the cover plate 2.
[0028] The cover plate 2 has a first blind hole 24 formed by downward stretching, and the first blind hole 24 is located on both sides of the wire groove 21; the sealing cover 3 has a bolt hole corresponding to the first blind hole 24, and the sealing cover 3 is connected to the first blind hole by a screw passing through the bolt hole. A first counterbore is coaxially arranged at the first blind hole 24; a second counterbore is drawn and formed coaxially at the bolt hole, and the other side of the second counterbore forms a column and is arranged in cooperation with the first counterbore.
[0029] The cover plate 2 has a positioning groove 25 extending along the outside of the wire groove 21; the sealing cover 3 has a convex rib arranged in cooperation with the positioning groove 25.
[0030] Both ends of the cover plate 2 have second blind holes 26 formed by inward drawing. The sealing plate 4 has bolt holes corresponding to the second blind holes and is connected to the second blind holes 26 by screws.
[0031] It is assembled. The sealing plate 4 is installed at both ends of the housing by bolts, and sealant is used for sealing between the two. Then, the wire harness on the circuit board passes through the wire holes and wire grooves of the cover plate. The buckles on both sides of the cover plate are snapped onto the limiting strips of the housing, and the sealing plate is connected to the second blind holes of the cover plate by screws. Sealant is used for sealing between the cover plate and the housing and the sealing plate. After pulling out an appropriate length of the wire harness from the wire groove, sealant is filled in the wire groove. After filling, the sealing cover is covered on the wire groove, and the sealing cover is fixed to the first blind hole by screws. Since the limiting plate on the inner side of the sealing cover is inserted into the groove, the sealant can be further extruded into the gaps between the wire harnesses, thereby improving the sealing effect.
[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
Claims
1. A waterproof motor controller, characterized in that: The invention comprises a housing (1) with an open top and a controller module (5) installed in the housing (1), wherein the controller module (5) comprises a circuit board (51) installed at the bottom of the housing (1) and a connector connected to the circuit board (51) via a wiring harness; a cover plate (2) is sealingly fitted on the open top of the housing (1), the top of the cover plate (2) has a wire groove (21) formed in a concave shape, one end of the wire groove (21) is connected to the edge of the cover plate (2), and the other end has an end plate integrally arranged with the cover plate (2), the end plate has a wire hole (22) arranged through the end plate; the side wall of the wire groove (21) has a groove (23) extending in the circumferential direction; the wiring harness passes through the wire hole (22) and the wire groove (21), and the wire groove (21) is filled with sealant.
2. The waterproof motor controller according to claim 1, characterized in that: The wire trough (21) comprises a semicircular side wall at the bottom and two vertical side walls arranged tangentially to each other; at least two grooves (23) are arranged at intervals along the length direction of the wire trough (21).
3. The waterproof motor controller according to claim 2, characterized in that: The wire groove (21) is matched with a sealing cover (3), and a limiting plate (31) corresponding to the groove (23) is vertically arranged on the sealing cover (3). The limiting plate (31) is inserted in the groove (23) in a matching manner, and has an arc groove in the middle thereof arranged opposite to the wire groove (21).
4. The waterproof motor controller according to claim 3, characterized in that: The cover plate (2) has a first blind hole (24) formed by stretching downward, and the first blind hole (24) is located on both sides of the wire slot (21); the sealing cover (3) has bolt holes arranged corresponding to the first blind holes (24), and the sealing cover (3) is connected to the first blind hole by means of screws passing through the bolt holes.
5. The waterproof motor controller according to claim 4, characterized in that: The first blind hole (24) has a coaxially arranged first countersunk hole; the bolt hole is deep-drawn to form a coaxially arranged second countersunk hole, the other side of the second countersunk hole is formed into a columnar shape and is arranged in coordination with the first countersunk hole.
6. The waterproof motor controller according to claim 3, characterized in that: The cover plate (2) has a positioning groove extending along the outer side of the wire groove (21); the sealing cover (3) has a convex ridge arranged to cooperate with the positioning groove.
7. The waterproof motor controller according to claim 3, characterized in that: The cover plate (2) is concavely formed with mounting grooves matching the sealing cover (3) at the top and bottom, and the sealing cover (3) fits on the mounting groove and is flush with the cover plate (2).
8. The waterproof motor controller according to claim 1, characterized in that: The shell (1) is in the shape of a U-shaped groove, and sealing plates (4) are installed at both ends; the two opposite side walls of the shell (1) are provided with limiting strips (11) arranged opposite to each other, and the limiting strips (11) are extended along the length direction of the shell (1) and arranged at the open part of the shell (1); the two sides of the cover plate (2) are provided with buckles corresponding to the limiting strips (11) and are buckled on the limiting strips (11).
9. The waterproof motor controller according to claim 8, characterized in that: The two ends of the cover plate (2) have second blind holes formed by inward drawing, and the sealing plate (4) has bolt holes arranged corresponding to the second blind holes and is connected to the second blind holes by means of screws.
10. The waterproof motor controller according to claim 1, characterized in that: A plurality of copper connection posts (52) for connecting power lines or busbars are vertically arranged on the circuit board (51), and connection holes corresponding to the copper connection posts (52) are provided on the cover plate (2), and the upper ends of the copper connection posts (52) pass through the connection holes.