A new high protection sealing structure for junction box seat and junction box cover

Abstract

The application relates to the technical field of motor junction boxes, in particular to a novel high-protection sealing structure for a junction box seat and a junction box cover, which comprises a motor shell, a junction seat is arranged on the side surface of the motor shell, a box body structure is arranged on the side surface of the motor shell, an installation structure is connected between the box body structure and the motor, a closing structure is arranged between a bottom shell and a top cover, a sealing structure is connected between the top cover and the closing structure, a junction structure is arranged on the side surface of the bottom shell, and a locking structure is arranged on the inner side of the junction structure; the box body structure can provide double sealing protection for the junction box, the installation structure can guarantee the stability of the junction box mounted on the motor, the closing structure can fasten the bottom shell and the top cover, the sealing structure can seal the fasteners to prevent oxidation, meanwhile, the sealing structure can avoid the loss of parts, the junction structure can guarantee the sealing performance of the cable connection, and the locking structure can avoid the loosening of the cable connection and improve the tensile resistance of the cable.

Description

Technical Field

[0001] This invention relates to the field of motor junction box technology, specifically a novel highly protective sealing structure for junction box base and junction box cover. Background Technology

[0002] Motor junction boxes are key components connecting the internal windings of a motor to external power cables, and are widely used in various industrial motor equipment such as fans, pumps, machine tools, and construction machinery. Because motors often operate in harsh environments outdoors, including humid, dusty, spray-prone, and even slightly corrosive conditions, the junction boxes require stringent protection and sealing performance, including waterproofing, dustproofing, and oil resistance.

[0003] Traditional junction boxes often rely on a single layer of rubber gasket sandwiched between the bottom and top covers for sealing, with the seal achieved solely by screws pressing the gasket together. After prolonged vibration and alternating hot and cold temperatures, the rubber gasket is prone to permanent compression deformation and localized rebound failure, leading to gaps at the connection. Rainwater, dust, and other impurities can easily seep into the box from the mating surface between the cover and the base, causing short circuits in the terminals, winding insulation breakdown, and ultimately motor failure. Furthermore, the four corner bolts of conventional junction boxes are directly exposed, making them susceptible to oxidation and rust over time, hindering maintenance. The screws also lack anti-loosening mechanisms, and the vibrations from long-term motor operation can cause the nuts to loosen, reducing the cover's clamping force and further compromising the seal. Finally, traditional cable connectors use only a single rubber sealing ring to wrap the cable, relying solely on threaded compression for sealing, resulting in poor sealing. Additionally, the cable is prone to loosening and detachment under external force, affecting the internal seal and potentially causing the wiring to come loose. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a novel highly protective sealing structure for junction box bases and junction box covers.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a novel high-protection sealing structure for junction box base and junction box cover, including a motor housing, a junction box base installed on the side of the motor housing, a box structure provided on the side of the motor housing, an installation structure connected between the box structure and the motor, a closing structure provided between the bottom shell and the top cover, a sealing structure connected between the top cover and the closing structure, a wiring structure provided on the side of the bottom shell, and a locking structure provided on the inner side of the wiring structure.

[0006] Specifically, the box structure includes a bottom shell, a top cover, a second sealing ring, and a reinforcing component. The bottom shell is located on the side of the motor housing, the terminal block is located in the middle of the bottom shell, and the top cover is located on the top side of the bottom shell. A second sealing ring is provided between the bottom shell and the top cover to achieve a preliminary sealing effect. A reinforcing component is also provided between the bottom shell and the top cover to further improve the sealing effect and limit the connection between the bottom shell and the top cover.

[0007] Specifically, the reinforcing component includes a connecting ring, which is fixedly connected to the top side of the bottom shell. The connecting ring has an annular structure and is slidably connected to the bottom side of the top cover.

[0008] Specifically, the reinforcing component further includes a push sleeve and a first sealing ring. Both the push sleeve and the first sealing ring are annular structures. The outer side of the first sealing ring abuts against both the connecting ring and the inner side of the top cover. The inner side of the first sealing ring is provided with a push sleeve. The surfaces of the first sealing ring and the push sleeve that abut against each other are mutually cooperating conical surfaces. The top side of the push sleeve abuts against the top cover. The first sealing ring is made of elastic rubber.

[0009] Specifically, the installation structure includes an installation positioning groove, the side of the motor housing is provided with an installation positioning groove, the bottom of the bottom shell is located in the installation positioning groove and fixed by a screw, a guide frame is fixedly connected to the side of the motor housing, the guide frame is located outside the terminal block, the middle part of the bottom shell is slidably connected to the guide frame, and a bottom pad is fixedly connected to the bottom side of the bottom shell, the bottom side of the bottom shell abuts against the motor housing through the bottom pad.

[0010] Specifically, a closed structure is provided between the bottom shell and the top cover. The closed structure includes fastening screws. Each of the four corners of the top cover is rotatably connected to a fastening screw. Each of the four corners of the bottom shell is provided with a limiting groove corresponding to the fastening screw. A hexagonal nut is slidably connected to the inner side of the limiting groove. A second spring is fixedly connected between the bottom side of the hexagonal nut and the bottom shell. The fastening screws are threadedly connected to the corresponding hexagonal nuts.

[0011] Specifically, a sealing structure is connected between the top cover and the closing structure. The sealing structure includes threaded caps. Each of the four corners of the top cover is threaded with a corresponding fastening screw, and the fastening screw is located on the bottom side of the corresponding threaded cap.

[0012] Specifically, a fastening post is slidably connected to the top of the fastening screw, and a first spring is fixedly connected between the fastening post and the fastening screw. A cross groove is opened at the top of the fastening post, and the top of the fastening post has a hexagonal structure. A mating groove is opened on the inner side of the top cover to cooperate with the top of the fastening post. The top of the fastening post is engaged with the top cover through the mating groove.

[0013] Specifically, the side of the bottom shell is provided with a wiring structure, which includes a wiring screw hole. The side of the bottom shell has a wiring screw hole, and a threaded mounting sleeve is threadedly connected to the side of the bottom shell through the wiring screw hole. A cable passes through the middle of the threaded mounting sleeve. A washer is provided on the side of the threaded mounting sleeve, which abuts against the end of the wiring screw hole on the bottom shell. Multiple hollow rubber rings are provided on the inner side of the threaded mounting sleeve. The hollow rubber rings are hollow ring structures made of elastic rubber. A support baffle is fixedly connected to the inner side of the bottom shell. The cable passes through the support baffle. The multiple hollow rubber rings are clamped between the support baffle and the threaded mounting sleeve. The inner side of the hollow rubber rings is in close contact with the outer side of the cable.

[0014] Specifically, the wiring structure has a locking structure on its inner side, which includes a positioning slot. The threaded mounting sleeve has a positioning slot at its end located inside the bottom shell. The inner side of the support baffle is slidably connected to the threaded mounting sleeve. A third spring is fixedly connected between the inclined sliding rod and the support baffle. The end of the inclined sliding rod is an inclined structure, and the inclined end of the inclined sliding rod engages with the threaded mounting sleeve through the positioning slot.

[0015] Specifically, the threaded mounting sleeve has multiple engaging blocks slidably connected to its side. The end of the engaging block facing the outside of the threaded mounting sleeve is a hemispherical structure, and the hemispherical end of the engaging block abuts against the inner side of the wiring screw hole opened on the bottom shell. The other end of the engaging block is a triangular structure, and the triangular end of the engaging block abuts tightly against the outer surface of the cable. The washer restricts the sliding range of the engaging block to prevent it from coming off.

[0016] The beneficial effects of this invention are: (1) A novel high-protection sealing structure for junction box base and junction box cover of the present invention, wherein a box structure is provided on the side of the motor housing, and an installation structure is connected between the box structure and the motor. The box structure can provide double sealing protection for the junction box, and the installation structure can ensure the stability of the junction box installed on the motor.

[0017] (2) A novel high-protection sealing structure for junction box base and junction box cover of the present invention is provided between the bottom shell and the top cover, and a sealing structure is connected between the top cover and the closing structure. The bottom shell and the top cover can be fastened by the closing structure, and the fasteners can be sealed to prevent oxidation by the sealing structure, while avoiding the loss of parts.

[0018] (3) A novel high-protection sealing structure for junction box base and junction box cover of the present invention has a wiring structure on the side of the bottom shell and a locking structure on the inner side of the wiring structure. The wiring structure can ensure the sealing performance of the cable connection and the locking structure can prevent the cable connection from loosening and improve the cable's tensile strength. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the motor and the mounting positioning groove of the present invention; Figure 3 This is a schematic diagram of the connection structure between the bottom shell and the top cover of the present invention; Figure 4 This is a schematic diagram of the connection structure between the bottom shell and the bottom pad of the present invention; Figure 5 This is a schematic diagram of the connection structure between the bottom shell and the connecting ring of the present invention; Figure 6 This is a schematic diagram of the connection structure between the top cover and the push sleeve of the present invention; Figure 7 This is a schematic diagram of the connection structure between the top cover and the connecting ring of the present invention; Figure 8 This is a schematic diagram of the connection structure between the push sleeve and the first sealing ring of the present invention; Figure 9 This is a schematic diagram of the connection structure between the fastening screw and the hexagonal nut of the present invention; Figure 10 This is a schematic diagram of the connection structure between the top cover and the threaded cap of the present invention; Figure 11 This is a schematic diagram of the connection structure between the bottom shell and the threaded mounting sleeve of the present invention; Figure 12 This is a schematic diagram of the connection structure between the threaded mounting sleeve and the support baffle of the present invention; Figure 13 This is a schematic diagram of the connection structure between the threaded mounting sleeve and the hollow rubber ring of the present invention.

[0021] In the diagram: 1. Motor housing; 2. Box structure; 201. Bottom shell; 202. Top cover; 203. Connecting ring; 204. Push sleeve; 205. First sealing ring; 206. Second sealing ring; 3. Sealing structure; 301. Threaded cap; 302. Fastening post; 303. First spring; 304. Mating groove; 4. Wiring structure; 401. Cable; 402. Threaded mounting sleeve; 403. Wiring screw hole; 404. 405 Support baffle; 406 Washer; 5. Hollow rubber ring; 5. Mounting structure; 501 Mounting positioning groove; 502 Guide frame; 503 Base pad; 6. Terminal block; 7. Closing structure; 701 Limiting slide groove; 702 Fastening screw; 703 Hexagonal nut; 704 Second spring; 8. Locking structure; 801 Inclined slide bar; 802 Positioning slot; 803 Third spring; 804 Engaging block. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figure 2 , Figure 3 , Figure 4 , Figure 9 and Figure 13 As shown, a novel high-protection sealing structure for a junction box base and junction box cover according to the present invention includes a motor housing 1, a junction box 6 mounted on the side of the motor housing 1, a side box structure 2 of the motor housing 1, an installation structure 5 connecting the box structure 2 and the motor, a closing structure 7 between the bottom shell 201 and the top cover 202, a sealing structure 3 connecting the top cover 202 and the closing structure 7, a wiring structure 4 on the side of the bottom shell 201, and a locking structure 8 on the inner side of the wiring structure 4.

[0024] Specifically, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11As shown, the housing structure 2 includes a bottom shell 201, a top cover 202, a second sealing ring 206, and a reinforcing assembly. Both the bottom shell 201 and the top cover 202 are made of stainless steel. The bottom shell 201 is fixedly connected to the side of the motor housing 1 by screws, and the terminal block 6 is located in the middle of the bottom shell 201. The top cover 202 is located on the top side of the bottom shell 201. The reinforcing assembly includes a connecting ring 203, a pushing sleeve 204, and a first sealing ring 205. The connecting ring 203 has an annular structure and is fixedly connected to the top side of the bottom shell 201. The connecting ring 203 is slidably connected to the bottom side of the top cover 202. Both the pushing sleeve 204 and the first sealing ring 205 have annular structures. The first sealing ring 205 is made of elastic rubber, and its outer side simultaneously abuts against the connecting ring 203 and the inner side of the top cover 202. The inner side of the first sealing ring 205 is provided with a push sleeve 204. The surfaces of the first sealing ring 205 and the push sleeve 204 that abut against each other are mutually cooperating conical surfaces. The top side of the push sleeve 204 abuts against the top cover 202. The box structure 2 can provide double sealing protection for the junction box. First, the junction box, which is composed of a stainless steel bottom shell 201 and a top cover 202, is fixed to the side of the motor housing 1 by screws to protect the terminal block 6 and the connection point of the cable 401 on the inner side. When the top cover 202 is closed with the bottom shell 201, the second sealing ring 206 between the two provides a preliminary sealing effect for the junction box. At the same time, the connecting ring 203 on the bottom shell 201 slides into the bottom side of the top cover 202 to position the installation of the top cover 202. A detachable push sleeve 204 and a first sealing ring 205 are provided between the bottom shell 201 and the top cover 202. When the top cover 202 is closed, the inner side of the top cover 202 will push the push sleeve 204 downward. The push sleeve 204 squeezes the first sealing ring 205 through its conical surface, causing the first sealing ring 205 to expand radially. Its outer side is in close contact with the inner side of the connecting ring 203 and the inner side of the top cover 202. Combined with the second sealing ring 206 directly set on the contact surface between the top cover 202 and the bottom shell 201, a multi-directional sealing effect is achieved, preventing the sealing performance from decreasing due to motor vibration.

[0025] Specifically, such as Figure 2 , Figure 4 , Figure 5 , Figure 9As shown, the mounting structure 5 includes a mounting positioning groove 501, a guide frame 502, and a base pad 503. The mounting positioning groove 501 is provided on the side of the motor housing 1, and the bottom of the base housing 201 is located within the mounting positioning groove 501 and fixed by screws. The guide frame 502 is fixedly connected to the side of the motor housing 1, and is located outside the terminal block 6. The middle part of the base housing 201 is slidably connected to the guide frame 502. The base pad 503 is fixedly connected to the bottom side of the base housing 201, and the bottom side of the base housing 201 abuts against the motor housing 1 through the base pad 503. The mounting structure 5 ensures the stability of the terminal block when installed on the motor; that is, during installation, the bottom of the base housing 201 is aligned with the mounting positioning groove 501 on the side of the motor housing 1 and inserted, and the mounting positioning groove 501 positions the base housing 201. Meanwhile, the guide frame 502 on the side of the motor housing 1 passes through the middle of the bottom housing 201. The guide frame 502 is located on the outside of the terminal block 6, and the middle of the bottom housing 201 is slidably connected to the guide frame 502. The guide frame 502 guides the installation of the bottom housing 201. The bottom side of the bottom housing 201 abuts against the motor housing 1 through the bottom pad 503, which provides cushioning and assists in sealing. Finally, the bottom housing 201 is fixed in the mounting positioning groove 501 by screws, thus completing the installation of the box structure 2.

[0026] Specifically, such as Figure 5 , Figure 6 , Figure 9 As shown, the closing structure 7 includes fastening screws 702, limiting grooves 701, hexagonal nuts 703, and a second spring 704. A fastening screw 702 is rotatably connected to each of the four corners of the top cover 202, and limiting grooves 701 are respectively provided at the four corners of the bottom shell 201 corresponding to the fastening screws 702. A hexagonal nut 703 is slidably connected to the inner side of the limiting groove 701, and a second spring 704 is fixedly connected between the bottom side of the hexagonal nut 703 and the bottom shell 201. The fastening screws 702 are threadedly connected to the corresponding hexagonal nuts 703. The closing structure 7 can fasten the bottom shell 201 and the top cover 202; that is, when closing the top cover 202 and the bottom shell 201, the top cover 202 is placed on the top side of the bottom shell 201, and the fastening screws 702 at the four corners of the top cover 202 correspond to the limiting grooves 701 at the four corners of the bottom shell 201. The top cover 202 and the bottom shell 201 can be fixed by rotating the fastening screw 702 to connect it with the hexagonal nut 703 in the limiting slide groove 701. The hexagonal nut 703 is slidably connected in the limiting slide groove 701, and its bottom side is elastically connected to the bottom shell 201 by the second spring 704. This ensures that before tightening the fastening screw 702, the hexagonal nut 703 will always be in contact with the end of the fastening screw 702 under the push of the second spring 704, which facilitates operation.

[0027] Specifically, such as Figure 1 , Figure 3 , Figure 7 , Figure 9 , Figure 10 As shown, the sealing structure 3 includes a threaded cap 301, a fastening post 302, a first spring 303, and a mating groove 304. A threaded cap 301 is threadedly connected to each of the four corners of the top cover 202, corresponding to a fastening screw 702. The fastening screw 702 is located on the bottom side of the corresponding threaded cap 301. A fastening post 302 is slidably connected to the top of the fastening screw 702, and a first spring 303 is fixedly connected between the fastening post 302 and the fastening screw 702. The top of the fastening post 302 has a cross-shaped groove, and the top of the fastening post 302 has a hexagonal structure. The inner side of the top cover 202 has a mating groove 304 that mates with the top of the fastening post 302. The top of the fastening post 302 engages with the top cover 202 through the mating groove 304. The sealing structure 3 can seal the fasteners to prevent oxidation and avoid loss of parts. That is, the end of the fastening post 302 has a cross-shaped groove, and the user can rotate the fastening screw 702 through the fastening post 302 to fix the top cover 202 and the bottom shell 201. At the same time, the fastening post 302... 02 and the fastening screw 702 are always located inside the top cover 202 to prevent parts from being lost. A first spring 303 connects the fastening post 302 and the fastening screw 702. When the user rotates the fastening post 302 with a screwdriver or other tools, they need to press it simultaneously to disengage the top of the fastening post 302 from the mating groove 304, at which point the fastening post 302 can be rotated freely. When the fastening screw 702 is tightened, after releasing the fastening post 302, the fastening post 302 will automatically slide into the mating groove 304 under the push of the first spring 303, thus preventing the fastening screw 702 from loosening. Finally, tightening the threaded cap 301 can seal the fastening screw 702 and the fastening post 302 inside the top cover 202, providing a sealing and protection function to prevent oxidation of the metal parts.

[0028] Specifically, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 11 , Figure 12 and Figure 13As shown, the wiring structure 4 includes a wiring screw hole 403, a threaded mounting sleeve 402, a cable 401, a washer 405, a hollow rubber ring 406, and a support baffle 404. A wiring screw hole 403 is provided on the side of the bottom shell 201, and a threaded mounting sleeve 402 is threadedly connected to the side of the bottom shell 201 through the wiring screw hole 403. A cable 401 passes through the center of the threaded mounting sleeve 402, and a washer 405 is provided on the side of the threaded mounting sleeve 402, which abuts against the end of the wiring screw hole 403 on the bottom shell 201. Multiple hollow rubber rings 406 are provided on the inner side of the threaded mounting sleeve 402; each hollow rubber ring 406 is a hollow ring structure made of elastic rubber. A support baffle 404 is fixedly connected to the inner side of the bottom shell 201. The cable 401 passes through the support baffle 404. Multiple hollow rubber rings 406 are clamped between the support baffle 404 and the threaded mounting sleeve 402. The inner side of the hollow rubber ring 406 is in close contact with the outer side of the cable 401. The sealing performance of the connection of the cable 401 can be guaranteed by the wiring structure 4. That is, when connecting the cable 401, the multiple hollow rubber rings 406 are first placed inside the threaded mounting sleeve 402 in sequence. Then, the cable 401 passes through the threaded mounting sleeve 402 and the hollow rubber rings 406 inside and extends an appropriate length. Then, the threaded mounting sleeve 402 is threaded into the corresponding wiring screw hole 403. At this time, the end of the cable 401 will pass through the corresponding opening on the support baffle 404. During the tightening of the threaded mounting sleeve 402, the inner contact surface of the threaded mounting sleeve 402 pushes the hollow rubber rings 406, clamping multiple hollow rubber rings 406 between the support baffle 404 and the threaded mounting sleeve 402. Due to the hollow structure of the hollow rubber rings 406, they gradually deform after being compressed, causing the pressure between the hollow rubber rings 406 and the outer side of the cable 401 and the inner side of the threaded mounting sleeve 402 to gradually increase. Multiple hollow rubber rings 406 deform synchronously, achieving multiple seals at the cable 401 entry point. The washer 405 located on the side of the threaded mounting sleeve 402 abuts against the end of the wiring screw hole 403 opened on the bottom shell 201, serving as a limit and auxiliary seal.

[0029] Specifically, such as Figure 12 and Figure 13As shown, the locking structure 8 includes a positioning slot 802, an inclined slide rod 801, a third spring 803, and a locking block 804. The threaded mounting sleeve 402 has a positioning slot 802 at its end located inside the bottom shell 201, and the inclined slide rod 801 is slidably connected to the inner side of the support baffle 404 corresponding to the threaded mounting sleeve 402. A third spring 803 is fixedly connected between the inclined slide rod 801 and the support baffle 404. The end of the inclined slide rod 801 is an inclined structure. The inclined end of the inclined slide rod 801 is engaged with the threaded mounting sleeve 402 through the positioning slot 802. Multiple engagement blocks 804 are slidably connected to the side of the threaded mounting sleeve 402. The end of the engagement block 804 facing the outside of the threaded mounting sleeve 402 is a hemispherical structure. The hemispherical end of the engagement block 804 abuts against the inner side of the wiring screw hole 403 opened on the bottom shell 201. The other end of the engagement block 804 is a triangular structure. The triangular end of the engagement block 804 abuts tightly against the outer surface of the cable 401. The washer 405 supports the engagement block 804. The sliding range is limited to prevent it from coming off; the locking structure 8 can prevent loosening at the connection of cable 401 and improve the tensile strength of cable 401. Specifically, multiple engagement blocks 804 are slidably connected to the side of the threaded mounting sleeve 402. The end of the engagement block 804 facing the outside of the threaded mounting sleeve 402 is a hemispherical structure. When the threaded mounting sleeve 402 is fully screwed into the wiring screw hole 403, the hemispherical end of the engagement block 804 will abut against the inside of the wiring screw hole 403 on the bottom shell 201, thereby pushing the engagement block 804 to slide inward until the triangular end of the engagement block 804 engages with the outer sheath of cable 401, improving the tensile strength of cable 401. On the other hand, when the threaded mounting sleeve 402 is screwed into the wiring screw hole 403, the end of the threaded mounting sleeve 402 located inside the bottom shell 201 gradually approaches the support baffle 404. Under the elastic force of the third spring 803, the inclined slide rod 801, which is slidably connected to the inner side of the support baffle 404, slides along the positioning groove 802 at the end of the threaded mounting sleeve 402 and is locked into the positioning groove 802, thereby realizing the locking between the threaded mounting sleeve 402 and the support baffle 404 and preventing the threaded mounting sleeve 402 from loosening and unrotating due to vibration. After the cable 401 is fixed, the wiring operation between the cable 401 head and the terminal block 6 can be carried out.

[0030] In use, the junction box, consisting of a stainless steel bottom shell 201 and a top cover 202, is first fixed to the side of the motor housing 1 by screws, protecting the wiring dock 6 and the connection point of the cable 401 on the inner side. When the top cover 202 and the bottom shell 201 are closed, the second sealing ring 206 between them provides a preliminary sealing effect for the junction box. At the same time, the connecting ring 203 on the bottom shell 201 slides into the bottom side of the top cover 202 to position the installation of the top cover 202. A detachable push sleeve 204 and a first sealing ring 205 are provided between the bottom shell 201 and the top cover 202. When the top cover 202 is closed, the inner side of the top cover 202 will push the push sleeve 204 downward. The push sleeve 204 squeezes the first sealing ring 205 through its conical surface, causing the first sealing ring 205 to expand radially. Its outer side is in close contact with the inner side of the connecting ring 203 and the inner side of the top cover 202. Combined with the second sealing ring 206 directly set on the contact surface between the top cover 202 and the bottom shell 201, a multi-directional sealing effect is achieved, preventing the sealing performance from decreasing due to motor vibration.

[0031] During installation, align the bottom of the base shell 201 with the mounting positioning groove 501 on the side of the motor housing 1 and insert it. The mounting positioning groove 501 positions the base shell 201. Simultaneously, the guide frame 502 on the side of the motor housing 1 passes through the middle of the base shell 201. The guide frame 502 is located outside the terminal block 6, and the middle of the base shell 201 is slidably connected to the guide frame 502, which guides the installation of the base shell 201. The bottom side of the base shell 201 abuts against the motor housing 1 via a bottom pad 503, which provides cushioning and assists in sealing. Finally, the base shell 201 is fixed into the mounting positioning groove 501 using screws, thus completing the installation of the housing structure 2.

[0032] When closing the top cover 202 and the bottom shell 201, the top cover 202 is placed on the top side of the bottom shell 201. The fastening screws 702 at the four corners of the top cover 202 correspond to the limiting slide grooves 701 at the four corners of the bottom shell 201. By rotating the fastening screws 702, they are threaded into the hexagonal nuts 703 in the limiting slide grooves 701, thus fixing the top cover 202 and the bottom shell 201. The hexagonal nuts 703 are slidably connected in the limiting slide grooves 701, and their bottom sides are elastically connected to the bottom shell 201 through the second spring 704. This ensures that before tightening the fastening screws 702, the hexagonal nuts 703 will always be in contact with the end of the fastening screws 702 under the push of the second spring 704, facilitating operation.

[0033] The end of the fastening post 302 has a cross groove, allowing the user to rotate the fastening screw 702, thereby fixing the top cover 202 and the bottom shell 201. Simultaneously, the fastening post 302 and the fastening screw 702 remain inside the top cover 202, preventing parts from being lost. A first spring 303 connects the fastening post 302 and the fastening screw 702. When the user rotates the fastening post 302 using a screwdriver or other tools, they must simultaneously press down to disengage the top of the fastening post 302 from the mating groove 304, allowing free rotation of the fastening post 302. When the fastening screw 702 is tightened, releasing the fastening post 302 causes it to automatically slide into the mating groove 304 under the push of the first spring 303, preventing the fastening screw 702 from loosening. Finally, tightening the threaded cap 301 will seal the fastening screw 702 and the fastening post 302 inside the top cover 202, providing a sealing and protection function to prevent oxidation of the metal parts.

[0034] When connecting cable 401, multiple hollow rubber rings 406 are first placed inside the threaded mounting sleeve 402. Then, cable 401 is passed through the threaded mounting sleeve 402 and the hollow rubber rings 406 inside, extending an appropriate length. The threaded mounting sleeve 402 is then threaded into the corresponding wiring screw hole 403. At this time, the end of cable 401 will pass through the corresponding opening on the support baffle 404. During the tightening of the threaded mounting sleeve 402, the inner contact surface of the threaded mounting sleeve 402 pushes the hollow rubber rings 406, clamping multiple hollow rubber rings 406 between the support baffle 404 and the threaded mounting sleeve 402. Due to the hollow structure of the hollow rubber rings 406, they gradually deform after being compressed, causing the pressure between the hollow rubber rings 406 and the outer side of cable 401 and the inner side of the threaded mounting sleeve 402 to gradually increase. Multiple hollow rubber rings 406 deform synchronously, achieving multiple seals at the cable 401 entry point. The washer 405 located on the side of the threaded mounting sleeve 402 abuts against the end of the wiring screw hole 403 opened on the bottom shell 201, which serves to limit and assist in sealing.

[0035] Multiple engaging blocks 804 are slidably connected to the side of the threaded mounting sleeve 402. The end of the engaging block 804 facing the outside of the threaded mounting sleeve 402 has a hemispherical structure. When the threaded mounting sleeve 402 is fully screwed into the wiring screw hole 403, the hemispherical end of the engaging block 804 will abut against the inside of the wiring screw hole 403 on the bottom shell 201, thereby pushing the engaging block 804 to slide inward until the triangular end of the engaging block 804 engages with the outer sheath of the cable 401, improving the tensile strength of the cable 401. On the other hand, when the threaded mounting sleeve 402 is screwed into the wiring screw hole 403, the end of the threaded mounting sleeve 402 located inside the bottom shell 201 gradually approaches the support baffle 404. Under the elastic force of the third spring 803, the inclined slide rod 801, which is slidably connected to the inner side of the support baffle 404, slides along the positioning groove 802 at the end of the threaded mounting sleeve 402 and is locked into the positioning groove 802, thereby realizing the locking between the threaded mounting sleeve 402 and the support baffle 404 and preventing the threaded mounting sleeve 402 from loosening and unrotating due to vibration. After the cable 401 is fixed, the wiring operation between the cable 401 head and the terminal block 6 can be carried out.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel high-protection sealing structure for junction box base and junction box cover, characterized in that, Includes a motor housing (1), a terminal block (6) is installed on the side of the motor housing (1), a box structure (2) on the side of the motor housing (1), and an installation structure (5) connecting the box structure (2) and the motor. The box structure (2) includes a bottom shell (201), a top cover (202), a second sealing ring (206), and a reinforcing component. The bottom shell (201) is provided on the side of the motor housing (1). The terminal block (6) is located in the middle of the bottom shell (201). The top cover (202) is provided on the top side of the bottom shell (201). The second sealing ring (206) is provided between the bottom shell (201) and the top cover (202) to achieve a preliminary sealing effect. The reinforcing component is also provided between the bottom shell (201) and the top cover (202) to further improve the sealing effect and limit the connection between the bottom shell (201) and the top cover (202).

2. The novel high-protection sealing structure for a junction box base and a junction box cover according to claim 1, characterized in that: The reinforcing component includes a connecting ring (203), which is fixedly connected to the top side of the bottom shell (201). The connecting ring (203) is a ring structure and is slidably connected to the bottom side of the top cover (202).

3. A novel high-protection sealing structure for a junction box base and a junction box cover according to claim 2, characterized in that: The reinforcing component also includes a push sleeve (204) and a first sealing ring (205). Both the push sleeve (204) and the first sealing ring (205) are annular structures. The outer side of the first sealing ring (205) abuts against both the connecting ring (203) and the inner side of the top cover (202). The inner side of the first sealing ring (205) is provided with the push sleeve (204). The surfaces of the first sealing ring (205) and the push sleeve (204) that abut against each other are mutually cooperating conical surfaces. The top side of the push sleeve (204) abuts against the top cover (202). The first sealing ring (205) is made of elastic rubber.

4. A novel high-protection sealing structure for a junction box base and a junction box cover according to claim 1, characterized in that: The mounting structure (5) includes a mounting positioning groove (501). The mounting positioning groove (501) is provided on the side of the motor housing (1). The bottom of the bottom shell (201) is located in the mounting positioning groove (501) and fixed by a screw. A guide frame (502) is fixedly connected to the side of the motor housing (1). The guide frame (502) is located outside the terminal block (6). The middle part of the bottom shell (201) is slidably connected to the guide frame (502). A bottom pad (503) is fixedly connected to the bottom side of the bottom shell (201). The bottom side of the bottom shell (201) abuts against the motor housing (1) through the bottom pad (503).

5. A novel high-protection sealing structure for a junction box base and a junction box cover according to claim 1, characterized in that: A closed structure (7) is provided between the bottom shell (201) and the top cover (202). The closed structure (7) includes a fastening screw (702). A fastening screw (702) is rotatably connected to each of the four corners of the top cover (202). A limiting groove (701) is provided at each of the four corners of the bottom shell (201) corresponding to the fastening screw (702). A hexagonal nut (703) is slidably connected to the inner side of the limiting groove (701). A second spring (704) is fixedly connected between the bottom side of the hexagonal nut (703) and the bottom shell (201). The fastening screw (702) is threadedly connected to the corresponding hexagonal nut (703).

6. A novel high-protection sealing structure for a junction box base and a junction box cover according to claim 5, characterized in that: A sealing structure (3) is connected between the top cover (202) and the closing structure (7). The sealing structure (3) includes a threaded cap (301). A threaded cap (301) is threadedly connected to each of the four corners of the top cover (202) to a fastening screw (702). The fastening screw (702) is located on the bottom side of the corresponding threaded cap (301).

7. A novel high-protection sealing structure for a junction box base and a junction box cover according to claim 6, characterized in that: The top end of the fastening screw (702) is slidably connected to a fastening post (302), and a first spring (303) is fixedly connected between the fastening post (302) and the fastening screw (702). The top end of the fastening post (302) is provided with a cross groove, and the top end of the fastening post (302) is a hexagonal structure. The inner side of the top cover (202) is provided with a mating groove (304) that matches the top end of the fastening post (302). The top end of the fastening post (302) is engaged with the top cover (202) through the mating groove (304).

8. A novel high-protection sealing structure for a junction box base and a junction box cover according to claim 1, characterized in that: The bottom shell (201) has a wiring structure (4) on its side. The wiring structure (4) includes a wiring screw hole (403). The bottom shell (201) has a wiring screw hole (403) on its side. A threaded mounting sleeve (402) is threadedly connected to the side of the bottom shell (201) through the wiring screw hole (403). A cable (401) passes through the middle of the threaded mounting sleeve (402). A washer (405) is provided on the side of the threaded mounting sleeve (402) and connects to the wiring screw hole (403) on the bottom shell (201). The ends of the threaded mounting sleeve (402) are in contact with each other. The inner side of the threaded mounting sleeve (402) is provided with a plurality of hollow rubber rings (406). The hollow rubber rings (406) are hollow ring structures made of elastic rubber. The inner side of the bottom shell (201) is fixedly connected to a support baffle (404). The cable (401) passes through the support baffle (404). The plurality of hollow rubber rings (406) are clamped between the support baffle (404) and the threaded mounting sleeve (402). The inner side of the hollow rubber rings (406) is in close contact with the outer side of the cable (401).

9. A novel high-protection sealing structure for a junction box base and a junction box cover according to claim 8, characterized in that: The wiring structure (4) is provided with a locking structure (8) on its inner side. The locking structure (8) includes a positioning slot (802). The threaded mounting sleeve (402) is provided with a positioning slot (802) at its end located inside the bottom shell (201). The inner side of the support baffle (404) is slidably connected to the threaded mounting sleeve (402) with a sloping slide rod (801). A third spring (803) is fixedly connected between the sloping slide rod (801) and the support baffle (404). The end of the sloping slide rod (801) is a sloping structure. The sloping end of the sloping slide rod (801) is engaged with the threaded mounting sleeve (402) through the positioning slot (802).

10. A novel high-protection sealing structure for a junction box base and a junction box cover according to claim 9, characterized in that: The threaded mounting sleeve (402) has multiple engagement blocks (804) slidably connected to its side. The end of the engagement block (804) facing the outside of the threaded mounting sleeve (402) is a hemispherical structure. The hemispherical end of the engagement block (804) abuts against the inner side of the wiring screw hole (403) opened on the bottom shell (201). The other end of the engagement block (804) is a triangular structure. The triangular end of the engagement block (804) abuts tightly against the outer surface of the cable (401). The washer (405) restricts the sliding range of the engagement block (804) to prevent it from coming off.

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