Junction box, motor base and motor

Abstract

The embodiment of the utility model provides a junction box, a motor base and a motor. The junction box comprises a junction box base and a first sealing gasket, the first sealing gasket comprises a first plane gasket, a first convex rib ring arranged on the first face of the first plane gasket and a second convex rib ring arranged on the second face of the first plane gasket, and the first face is the face, used for making contact with the junction box base, of the first plane gasket. The second surface is the surface, in contact with the base body, of the first plane pad, and the first surface and the second surface are the front and back surfaces of the first plane pad; a groove ring is arranged on the junction box base, and the groove ring is matched with the first convex rib ring; wherein after the junction box base, the first sealing gasket and the base body are fixedly connected, the first convex rib ring and the groove ring are clamped so as to realize sealing between the junction box base and the first sealing gasket, and the second convex rib ring is compressed so as to realize sealing between the first sealing gasket and the base body. The sealing performance can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a junction box, a motor base and a motor. Background Art

[0002] The junction box is an important accessory of electrical equipment. Its main function is to connect the power line and control line together and provide power to the electrical equipment. It also has the functions of distributing line current, protecting the line and facilitating maintenance and repair.

[0003] At present, the sealing performance of the connection between the junction box and the motor base is not enough, resulting in a gap between the motor junction box and the motor base, which allows dust to enter the interior and affect the motor performance. Summary of the invention

[0004] The embodiments of the present invention provide a junction box, a motor base and a motor, which can improve the sealing performance.

[0005] According to a first aspect, a junction box provided by an embodiment of the present invention includes a junction box base and a first sealing gasket, wherein:

[0006] The first sealing gasket is used to seal the connection between the junction box base and the motor base; the first sealing gasket includes a first plane gasket, a first convex rib ring arranged on a first surface of the first plane gasket, and a second convex rib ring arranged on a second surface of the first plane gasket, the first surface is a surface of the first plane gasket used to contact the junction box base, the second surface is a surface of the first plane gasket used to contact the base body, and the first surface and the second surface are the front and back surfaces of the first plane gasket;

[0007] The junction box base is provided with a groove ring, and the groove ring is adapted to the first convex rib ring;

[0008] Among them, after the junction box base, the first sealing gasket and the base body are fixedly connected, the first convex rib ring is clamped with the groove ring to achieve sealing between the junction box base and the first sealing gasket, and the second convex rib ring is compressed to achieve sealing between the first sealing gasket and the base body.

[0009] In one embodiment, the height of the first convex rib ring is greater than the depth of the groove ring, the width of the first convex rib ring is less than the width of the groove ring, and the difference between the height of the first convex rib ring and the depth of the groove ring is a first preset value, so that after the first convex rib ring is inserted into the groove ring, the height of the first convex rib ring is compressed by the first preset value.

[0010] In one embodiment, the junction box base includes a first planar portion and a second planar portion that are not in the same plane, the first planar portion is hollow in the middle, the second planar portion is located at the hollow position of the first planar portion, each portion of the outer edge of the second planar portion is connected to each portion of the inner edge of the first planar portion, the second planar portion protrudes toward the bottom of the junction box base relative to the first planar portion, and the groove ring is located on the second planar portion.

[0011] In one embodiment, the first sealing gasket also includes a plurality of pins arranged on the first surface, and a plurality of sockets are provided on the junction box base, and the positions of the plurality of pins on the first surface correspond one-to-one to the positions of the plurality of sockets on the junction box base, so that when the first rib ring is inserted into the groove ring, each pin on the first sealing gasket is inserted into the socket at the corresponding position on the junction box base.

[0012] In one embodiment, the plurality of pins are arranged on the first rib ring, and correspondingly, the plurality of insertion holes are opened in the groove ring.

[0013] In one embodiment, a plurality of first bolt holes are provided on the junction box base, a plurality of second bolt holes are provided on the first sealing gasket, and a plurality of third bolt holes are provided on the base body of the motor base adapted to the junction box. The positions of the plurality of first bolt holes on the junction box base, the positions of the plurality of second bolt holes on the first sealing gasket, and the positions of the plurality of third bolt holes on the base body correspond one to one. By means of bolts penetrating the first bolt holes, the second bolt holes, and the third bolt holes, a fixed connection between the junction box base, the first sealing gasket, and the motor base is achieved.

[0014] In one embodiment, the junction box further comprises a junction box cover and a second sealing gasket assembled between the junction box cover and the junction box base, wherein:

[0015] The junction box cover has a first clamp ring and a second clamp ring, the first clamp ring and the second clamp ring are located on different planes; the second sealing gasket includes a second plane gasket, an outer ring convex rib and an inner ring convex rib, the outer ring convex rib and the inner ring convex rib are located on the same surface of the second plane gasket, and the inner ring convex rib and the outer ring convex rib have different heights; the first clamp ring is matched with the outer ring convex rib, and the second clamp ring is matched with the inner ring convex rib, so that when the second sealing gasket and the junction box cover are assembled, the outer ring convex rib is snapped into the first clamp ring, and the inner ring convex rib is snapped into the second clamp ring.

[0016] In one embodiment, the junction box cover has a third plane portion and a fourth plane portion that are not on the same plane, the middle of the third plane portion is hollow, the fourth plane portion is located at the hollow position of the third plane portion, each part of the outer edge of the fourth plane portion is connected to each part of the inner edge of the third plane portion, and the fourth plane portion protrudes toward the top of the junction box cover relative to the third plane portion; wherein:

[0017] The first collar is a circle of flange located on the outer periphery of the third plane portion, and the second collar is a circle of steps formed by the height difference between the fourth plane portion and the third plane portion;

[0018] The height of the inner ring convex rib is greater than the height of the outer ring convex rib, and the height difference between the inner ring convex rib and the outer ring convex rib is a first height difference; the height difference between the fourth plane portion and the third plane portion is a second height difference; the first height difference is greater than the second height difference, and the difference between the first height difference and the second height difference is a second preset value, so that when the second sealing gasket and the junction box cover are assembled, the inner ring convex rib is compressed by the second preset value.

[0019] In one embodiment, a stop ring is provided on the port plane of the junction box base that contacts the second sealing gasket, and the inner ring rib is sleeved on the stop ring to achieve assembly between the second sealing gasket and the junction box base;

[0020] Among them, the size of the stop ring is larger than the inner ring size of the inner ring rib, and the difference between the size of the stop ring and the inner ring size of the inner ring rib is a third preset value, so that the assembly of the second sealing gasket and the junction box base has an interference fit of the third preset value.

[0021] According to a second aspect, an embodiment of the present invention provides a motor base including a base body and a junction box disposed on the base body, wherein the junction box is the junction box provided in the first aspect.

[0022] According to a third aspect, a motor provided by an embodiment of the present invention includes the motor base provided by the second aspect.

[0023] The junction box, motor base and motor provided by the embodiments of the present invention have at least the following technical effects individually or in combination:

[0024] (1) After the junction box base, the first sealing gasket and the base body are fixedly connected, the first convex rib ring will be stuck in the groove ring, thereby achieving a seal between the junction box base and the first sealing gasket. At the same time, the second convex rib ring is compressed, and the compressed second convex rib ring will achieve a seal between the first sealing gasket and the base body. It can be seen that the first sealing gasket can achieve a seal between the junction box base and the base body, thereby improving the sealing performance.

[0025] (2) In one embodiment, the height of the first convex rib ring is greater than the depth of the groove ring, and the difference between the height of the first convex rib ring and the depth of the groove ring is a first preset value, so that after the first convex rib ring is inserted into the groove ring, the first convex rib ring will be compressed, and the compression amount is the first preset value. Since the width of the first convex rib ring is less than the width of the groove ring, the compressed first convex rib ring will widen inside the groove ring, thereby filling the groove ring. By compressing the height of the first convex rib ring, the junction box base and the first sealing gasket can be tightly fitted, thereby enhancing the sealing effect.

[0026] (3) In one embodiment, the junction box base includes a first plane portion and a second plane portion, the first plane portion and the second plane portion are not on the same horizontal plane, the middle of the first plane portion is hollow, and the second plane portion is located at the hollow position of the first plane portion, and each part of the inner edge of the first plane portion is connected to each part of the outer edge of the second plane portion, thereby ensuring that the first plane portion and the second plane portion are seamlessly connected. The second plane portion protrudes toward the bottom of the junction box base relative to the first plane portion, that is, the plane where the second plane portion is located protrudes outward, and the groove ring is located on the second plane portion, so that it is convenient to assemble the junction box base with the first sealing gasket and the base body of the motor base.

[0027] (4) In one embodiment, a plurality of pins are provided on the first surface, and a plurality of sockets are provided on the junction box base. The positions of the pins on the first surface correspond to the positions of the sockets on the junction box base, so that when the first rib ring is inserted into the groove ring, the pins on the first sealing gasket will be inserted into the corresponding sockets on the junction box base. The cooperation between the pins and the sockets not only plays a positioning role, but also can prevent the first sealing gasket from falling off from the junction box base, making it easy to assemble.

[0028] (5) In one embodiment, the first clamp ring is matched with the outer ring rib, so that the outer ring rib can be clamped into the first clamp ring, so as to realize the clamping connection of the outer periphery of the first clamp ring of the junction box cover and the second sealing gasket, and realize the first sealing. The second clamp ring is matched with the inner ring rib, so that the inner ring rib can be clamped into the second clamp ring, so as to realize the clamping connection of the second clamp ring of the junction box cover and the inner periphery of the second sealing gasket, and realize the second sealing. It can be seen that when the junction box cover and the second sealing gasket are assembled, the outer ring rib will be clamped into the first clamp ring, and the inner ring rib will be clamped into the second clamp ring, so as to realize double sealing and improve the sealing effect. Moreover, the plane where the first clamp ring is located and the plane where the second clamp ring is located are not at the same height, and the inner ring ribs have a height difference. In this way, the clamping position of the first clamp ring and the outer ring rib is not on the same plane as the clamping position of the second clamp ring and the inner ring rib, so that a labyrinth-like sealing method can be realized, and the sealing effect is very good. It can be seen that based on the double sealing and labyrinth sealing method, dust can be prevented from entering the inside of the junction box, so that the junction box reaches the IP66 protection level.

[0029] (6) In one embodiment, the first clamp ring and the second clamp ring are both formed by a height difference, so that the first clamp ring and the second clamp ring are both step-type clamp rings. Compared with the groove-type clamp ring, the step-type clamp ring is simpler to manufacture. The height difference between the inner ring rib and the outer ring rib is the first height difference, and the height difference between the fourth plane part and the third plane part on the junction box cover is the second height difference. The first height difference and the second height difference are not the same, and the first height difference is greater than the second height difference. In this way, when the second sealing gasket and the junction box cover are assembled, the height difference between the inner ring rib and the outer ring rib will be compressed, so that the inner ring rib and the second clamp ring of the junction box cover are tightly contacted together, achieving a perfect fit, and eliminating the influence of the casting deformation of the junction box cover on the sealing effect.

[0030] (7) In one embodiment, the inner ring rib is sleeved on the stop ring, and the second plane pad of the second sealing gasket is in contact with the port plane of the junction box base, so that the second sealing gasket and the junction box base are assembled, which has both good sealing effect and convenient assembly. Since the size of the stop ring is smaller than the inner ring size of the inner ring rib, when the inner ring rib is sleeved on the stop ring, the inner ring rib will be tightly clamped on the stop ring, further improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 is a bottom schematic diagram of a junction box base in one embodiment of the present invention;

[0033] Figure 2 is a schematic diagram of a first surface of a first sealing gasket in one embodiment of the present invention;

[0034] Figure 3 is a schematic diagram of a second surface of a first sealing gasket in one embodiment of the present invention;

[0035] Figure 4 is a cross-sectional schematic diagram of a first sealing gasket in one embodiment of the present invention;

[0036] Figure 5 An exploded view of a junction box base, a first sealing gasket and a base body in an unassembled state in one embodiment of the present invention;

[0037] Figure 6 It is a structural schematic diagram of a junction box cover in one embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the structure of a second sealing gasket in one embodiment of the present invention;

[0039] Figure 8 is a cross-sectional schematic diagram of a second sealing gasket in one embodiment of the present invention;

[0040] Fig. 9 A schematic diagram of the top of a junction box base in one embodiment of the present invention;

[0041] Fig.10 The figure is an exploded view of the junction box cover, the second sealing gasket and the junction box base in an unassembled state in one embodiment of the present invention.

[0042] Reference numerals:

[0043]

[0044] DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] In a first aspect, an embodiment of the present invention provides a junction box, see Figure 1 to Figure 5 The junction box comprises a junction box base 10 and a first sealing gasket 20, wherein:

[0047] The first sealing gasket 20 is used to seal the connection between the junction box base 10 and the motor base body 30; the first sealing gasket 20 includes a first plane gasket 25, a first convex rib ring 21 arranged on the first surface of the first plane gasket 25, and a second convex rib ring 24 arranged on the second surface of the first plane gasket 25, the first surface is the side of the first plane gasket 25 used to contact the junction box base 10, the second surface is the side of the first plane gasket 25 used to contact the base body 30, and the first surface and the second surface are the front and back surfaces of the first plane gasket 25;

[0048] The junction box base 10 is provided with a groove ring 11, and the groove ring 11 is adapted to the first rib ring 21;

[0049] Among them, after the junction box base 10, the first sealing gasket 20 and the base body 30 are fixedly connected, the first convex rib ring 21 is clamped with the groove ring 11 to achieve the seal between the junction box base 10 and the first sealing gasket 20, and the second convex rib ring 24 is compressed to achieve the seal between the first sealing gasket 20 and the base body 30.

[0050] The function of the first sealing gasket 20 is to seal the connection between the junction box base 10 and the motor base body 30, that is, the first sealing gasket 20 is arranged between the junction box base 10 and the motor base body 30. The first sealing gasket 20 includes a first plane gasket 25, a first convex rib ring 21 and a second convex rib ring 24. The first convex rib ring 21 is arranged on the first surface of the first plane gasket 25, and the second convex rib ring 24 is arranged on the second surface of the first plane gasket 25. The first surface and the second surface are the front and back surfaces of the first plane gasket 25. The first surface is used to contact the junction box base 10, and the second surface is used to contact the base body 30. As the name implies, the so-called convex rib ring refers to a circle of convex ribs.

[0051] Among them, a groove ring 11 is provided on the junction box base 10, and the groove ring 11 is adapted to the first rib ring 21, so that the first rib ring 21 can be inserted into the groove ring 11. As the name implies, the so-called groove ring 11 refers to a circle of grooves. When the junction box base 10, the first sealing gasket 20 and the base body 30 are fixedly connected, the first rib ring 21 will be inserted into the groove ring 11, thereby achieving the seal between the junction box base 10 and the first sealing gasket 20. At the same time, the second rib ring 24 is compressed, and the compressed second rib ring 24 will achieve the seal between the first sealing gasket 20 and the base body 30. It can be seen that the first sealing gasket 20 can achieve the seal between the junction box base 10 and the base body 30.

[0052] The cross sections of the first convex rib ring 21 and the second convex rib ring 24 may be arc-shaped.

[0053] In one embodiment, the height of the first rib ring 21 is greater than the depth of the groove ring 11, the width of the first rib ring 21 is less than the width of the groove ring 11, and the difference between the height of the first rib ring 21 and the depth of the groove ring 11 is a first preset value, so that after the first rib ring 21 is inserted into the groove ring 11, the height of the first rib ring 21 is compressed by the first preset value.

[0054] The height of the first convex rib ring 21 is greater than the depth of the groove ring 11, and the difference between the height of the first convex rib ring 21 and the depth of the groove ring 11 is a first preset value, so that after the first convex rib ring 21 is inserted into the groove ring 11, the first convex rib ring 21 will be compressed, and the compression amount is the first preset value. Since the width of the first convex rib ring 21 is smaller than the width of the groove ring 11, the compressed first convex rib ring 21 will become wider in the groove ring 11, thereby filling the groove ring 11. It can be seen that the width of the first convex rib ring 21 is only slightly smaller than the width of the groove ring 11. For example, the width of the first convex rib ring 21 is only 0.2 mm smaller than the width of the groove ring 11.

[0055] The first preset value can be set as needed, for example, if the height of the first convex rib ring 21 is 2 mm and the depth of the groove ring 11 is 1.5 mm, then the first preset value is 0.5 mm. After the first convex rib ring 21 is inserted into the groove ring 11, the height of the first convex rib ring 21 will be compressed to 1.5 mm, that is, a compression amount of 0.5 occurs, causing the first convex rib ring 21 to become wider, thereby filling the groove ring 11 which is slightly wider than the first convex rib ring 21.

[0056] In one embodiment, see Figure 1The junction box base 10 includes a first plane portion 15 and a second plane portion 14 which are not in the same plane. The middle of the first plane portion 15 is hollow, and the second plane portion 14 is located at the hollow position of the first plane portion 15. Each part of the outer edge of the second plane portion 14 is connected to each part of the inner edge of the first plane portion 15. The second plane portion 14 protrudes toward the bottom of the junction box base 10 relative to the first plane portion 15, and the groove ring 11 is located on the second plane portion 14.

[0057] That is, the junction box base 10 includes a first plane portion 15 and a second plane portion 14, the first plane portion 15 and the second plane portion 14 are not on the same horizontal plane, the middle of the first plane portion 15 is hollow, and the second plane portion 14 is located at the hollow position of the first plane portion 15, and each part of the inner edge of the first plane portion 15 is connected to each part of the outer edge of the second plane portion 14, thereby ensuring that there is no gap between the first plane portion 15 and the second plane portion 14. The second plane portion 14 protrudes toward the bottom of the junction box base 10 relative to the first plane portion 15, that is, the plane where the second plane portion 14 is located protrudes outward, and the groove ring 11 is located on the second plane portion 14, so that it is convenient to assemble with the first sealing gasket 20 and the base body 30 of the motor base.

[0058] In one embodiment, see Figure 1 and Figure 2 The first sealing gasket 20 also includes a plurality of pins 22 arranged on the first surface, and a plurality of plug holes 12 are provided on the junction box base 10. The positions of the plurality of pins 22 on the first surface correspond to the positions of the plurality of plug holes 12 on the junction box base 10 one by one, so that when the first rib ring 21 is inserted into the groove ring 11, each pin 22 on the first sealing gasket 20 is inserted into the plug hole 12 at the corresponding position on the junction box base 10.

[0059] The pin 22 refers to a protrusion, and the insertion hole 12 refers to a hole structure into which the pin 22 can be inserted.

[0060] It can be seen that a plurality of pins 22 are provided on the first surface, and a plurality of jacks 12 are provided on the junction box base 10, the number of the pins 22 is the same as the number of the jacks 12, and the positions of the pins 22 on the first surface correspond to the positions of the jacks 12 on the junction box base 10, so that when the first rib ring 21 is inserted into the groove ring 11, each pin 22 on the first sealing gasket 20 will be inserted into the corresponding jack 12 on the junction box base 10. The cooperation between the pins 22 and the jacks 12, in addition to playing a positioning role, can also prevent the first sealing gasket 20 from falling off from the junction box base 10, which is convenient for assembly.

[0061] The plurality of pins 22 are arranged on the first rib ring 21 , and correspondingly, the plurality of insertion holes 12 are opened in the groove ring 11 .

[0062] It is understandable that the first surface of the first sealing gasket 20 is provided with a first rib ring 21, and since the first sealing gasket 20 is very narrow in actual scenes and lacks space, the pin 22 is provided on the first rib ring 21, which can save space. At the same time, the insertion hole 12 is provided in the groove ring 11.

[0063] For example, four pins 22 are arranged on the first rib ring 21, and the four pins 22 are evenly distributed. Correspondingly, four insertion holes 12 are arranged in the groove ring 11, and the four insertion holes 12 are also evenly distributed.

[0064] In one embodiment, see Figure 1 to Figure 5 The junction box base 10 is provided with a plurality of first bolt holes 13, the first sealing gasket 20 is provided with a plurality of second bolt holes 23, and a plurality of third bolt holes 31 are provided on a base body 30 of a motor base adapted to the junction box. The positions of the plurality of first bolt holes 13 on the junction box base 10, the positions of the plurality of second bolt holes 23 on the first sealing gasket 20, and the positions of the plurality of third bolt holes 31 on the base body 30 correspond to each other one by one. By means of bolts penetrating the first bolt holes 13, the second bolt holes 23, and the third bolt holes 31, the junction box base 10, the first sealing gasket 20, and the motor base are fixedly connected.

[0065] For example, four first bolt holes 13 are provided on the junction box base 10, four second bolt holes 23 are provided on the first sealing gasket 20, and four third bolt holes 31 are provided on the base body 30. The positions of the four first bolt holes 13 on the junction box base 10, the positions of the four second bolt holes 23 on the first sealing gasket 20, and the positions of the four third bolt holes 31 on the base body 30 correspond one to one. After the bolts pass through the first bolt holes 13, the second bolt holes 23, and the third bolt holes 31, the bolts and nuts are tightened to achieve fixed connection between the junction box base 10, the first sealing gasket 20, and the motor base.

[0066] In one embodiment, see Figure 6 to Figure 10 The junction box may further include a junction box cover 40 and a second sealing gasket 50 assembled between the junction box cover 40 and the junction box base 10, wherein:

[0067] The junction box cover 40 has a first clamp ring 41 and a second clamp ring 42, and the first clamp ring 41 and the second clamp ring 42 are located on different planes; the second sealing gasket 50 includes a second plane gasket 54, an outer ring convex rib 51 and an inner ring convex rib 52, the outer ring convex rib 51 and the inner ring convex rib 52 are located on the same surface of the second plane gasket 54, and the inner ring convex rib 52 and the outer ring convex rib 51 have different heights; the first clamp ring 41 is matched with the outer ring convex rib 51, and the second clamp ring 42 is matched with the inner ring convex rib 52, so that when the second sealing gasket 50 and the junction box cover 40 are assembled, the outer ring convex rib 51 is snapped into the first clamp ring 41, and the inner ring convex rib 52 is snapped into the second clamp ring 42.

[0068] The junction box cover 40 has a first clamp ring 41 and a second clamp ring 42. The so-called clamp ring refers to a ring-shaped structure used for clamping with other components. The second sealing gasket 50 has an outer ring convex rib 51 and an inner ring convex rib 52. As the name implies, the outer ring convex rib 51 is a structure located on the outer periphery of the second sealing gasket 50, and the inner ring convex rib 52 is a structure located on the inner periphery of the second sealing gasket 50. The first clamp ring 41 is matched with the outer ring convex rib 51, so that the outer ring convex rib 51 can be clamped into the first clamp ring 41, so that the first clamp ring 41 of the junction box cover 40 and the outer periphery of the second sealing gasket 50 are clamped, and the first sealing is achieved. The second clamp ring 42 is matched with the inner ring convex rib 52, so that the inner ring convex rib 52 can be clamped into the second clamp ring 42, so that the second clamp ring 42 of the junction box cover 40 and the inner periphery of the second sealing gasket 50 are clamped, and the second sealing is achieved. That is to say, when the junction box cover 40 and the second sealing gasket 50 are assembled, the outer ring rib 51 will be clamped into the first clamp ring 41, and the inner ring rib 52 will be clamped into the second clamp ring 42, so as to achieve double sealing and improve the sealing effect.

[0069] The first clamp ring 41 and the second clamp ring 42 are located on different planes, that is, the plane where the first clamp ring 41 is located and the plane where the second clamp ring 42 is located are not at the same height. The inner ring convex rib 52 and the outer ring convex rib 51 have different heights, that is, the height of the inner ring convex rib 52 is different from the height of the outer ring convex rib 51, and the inner ring convex rib 52 and the inner ring convex rib 52 have a height difference. In this way, the clamping position of the first clamp ring 41 and the outer ring convex rib 51 and the clamping position of the second clamp ring 42 and the inner ring convex rib 52 are not on the same plane, so that seals of different heights can be formed, which can also be called a labyrinth sealing method, and the sealing effect is very good. It can be seen that based on the double sealing and labyrinth sealing method, dust can be prevented from entering the inside of the junction box, so that the junction box reaches the protection level of IP66.

[0070] In one embodiment, see Figure 6 to Figure 8, the junction box cover 40 has a third plane portion 44 and a fourth plane portion 45 which are not on the same plane, the middle of the third plane portion 44 is hollow, the fourth plane portion 45 is located at the hollow position of the third plane portion 44, each part of the outer edge of the fourth plane portion 45 is connected to each part of the inner edge of the third plane portion 44, and the fourth plane portion 45 protrudes toward the top of the junction box cover 40 relative to the third plane portion 44; wherein:

[0071] The first collar 41 is a flange located on the outer periphery of the third plane portion 44, and the second collar 42 is a step formed by the height difference between the fourth plane portion 45 and the third plane portion 44;

[0072] The height of the inner ring convex rib 52 is greater than the height of the outer ring convex rib 51, and the height difference between the inner ring convex rib 52 and the outer ring convex rib 51 is a first height difference; the height difference between the fourth plane portion 45 and the third plane portion 44 is a second height difference; the first height difference is greater than the second height difference, and the difference between the first height difference and the second height difference is a second preset value, so that when the second sealing gasket 50 and the junction box cover 40 are assembled, the inner ring convex rib 52 is compressed by the second preset value.

[0073] That is to say, the junction box cover 40 includes a third plane portion 44 and a fourth plane portion 45, the middle of the third plane portion 44 is hollow, the fourth plane portion 45 is located in the inner circle of the third plane portion 44, and each part of the outer edge of the fourth plane portion 45 is connected to each part of the inner edge of the third plane portion 44, thereby realizing seamless connection between the third plane portion 44 and the fourth plane portion 45. The first collar 41 is a flange located at the outer periphery of the third plane portion 44, and it can be seen that the first collar 41 is formed by the height difference between the third plane portion 44 and the flange of its outer periphery. There is a height difference between the fourth plane portion 45 and the third plane portion 44, and the second collar 42 is a step formed by the height difference, and it can be seen that the second collar 42 is formed by the height difference between the fourth plane portion 45 and the third plane portion 44. It can be seen that the first collar 41 and the second collar 42 are both formed by the height difference, so that the first collar 41 and the second collar 42 are both step-type collars. Compared with the groove-type collar, the step-type collar is simpler to make.

[0074] That is, an inner ring convex rib 52 and an outer ring convex rib 51 are arranged on the same surface of a second plane pad 54 which is hollow in the middle, the inner ring convex rib 52 is located at the inner peripheral edge of the second plane pad 54, and the outer ring convex rib 51 is located at the outer peripheral edge of the second plane pad 54. The height of the inner ring convex rib 52 is greater than the height of the outer ring convex rib 51, and the height difference between the inner ring convex rib 52 and the outer ring convex rib 51 is the first height difference. The height difference between the fourth plane portion 45 and the third plane portion 44 on the junction box cover 40 is the second height difference. The first height difference and the second height difference are not the same, but the first height difference is greater than the second height difference, and the difference between the first height difference and the second height difference is a second preset value.

[0075] For example, the first height difference is 3mm, the second height difference is 2mm, and the difference between the first height difference and the second height difference, i.e., the second preset value, is 1mm. Thus, when the second sealing gasket 50 and the junction box cover 40 are assembled, the height difference between the inner ring rib 52 and the outer ring rib 51 will be compressed by 1mm, i.e., the compression amount is 1mm. Thus, the inner ring rib 52 and the second clamping ring 42 of the junction box cover 40 are in tight contact with each other, achieving a perfect fit, and eliminating the influence of the casting deformation of the junction box cover 40 on the sealing effect.

[0076] The width of the inner ring convex rib 52 may be greater than the width of the outer ring convex rib 51. At this time, the height of the inner ring convex rib 52 is greater than the height of the outer ring convex rib 51, and the width of the inner ring convex rib 52 is greater than the width of the outer ring convex rib 51. It can be seen that the inner ring convex rib 52 can provide a stronger sealing performance than the outer ring convex rib 51.

[0077] In one embodiment, see Fig. 9 and Fig.10 A stop ring 17 is provided on the port plane 16 on the junction box base 10 that contacts the second sealing gasket 50, and the inner ring rib 52 is sleeved on the stop ring 17 to realize the assembly between the second sealing gasket 50 and the junction box base 10; wherein, the size of the stop ring 17 is larger than the inner ring size of the inner ring rib 52, and the difference between the size of the stop ring 17 and the inner ring size of the inner ring rib 52 is a third preset value, so that the assembly of the second sealing gasket 50 and the junction box base 10 has the interference of the third preset value.

[0078] That is to say, a stop ring 17 is provided on the port plane 16 on the junction box base 10, and the port plane 16 is a plane on the junction box base 10 that contacts the second sealing ring. The so-called stop ring 17 refers to a circle of protrusions formed on the port plane 16 of the junction box base 10, and the circle of protrusions can be called a stop. Since the stop is ring-shaped, it can be more vividly called a stop ring 17. The inner ring convex rib 52 is sleeved on the stop ring 17, and at this time, the second plane pad 54 of the second sealing gasket 50 contacts the port plane 16 of the junction box base 10, thereby realizing the assembly of the second sealing gasket 50 and the junction box base 10. It can be seen that the assembly of the second sealing gasket 50 and the junction box base 10 is realized by the sleeve connection of the stop ring 17 and the inner ring convex rib 52. It has both good sealing effect and the advantage of easy assembly.

[0079] Among them, the size of the stop ring 17 is smaller than the inner ring size of the inner ring rib 52, so when the inner ring rib 52 is sleeved on the stop ring 1732, the inner ring rib 52 will be tightly clamped on the stop ring 17, further increasing the sealing effect. The difference between the size of the stop ring 17 and the inner ring size of the inner ring rib 52 is a third preset value, so that the assembly of the second sealing gasket 50 and the junction box base 10 has an interference of the third preset value. The third preset value should not be too large or too small. While ensuring that the inner ring rib 52 is tightly clamped on the stop ring 17, it is also necessary to avoid excessive deformation of the second sealing gasket 50, thereby avoiding shortening the service life due to excessive deformation. For example, the third preset value is set within the range of 1mm to 2mm.

[0080] Among them, a fourth bolt hole 43 can be opened on the junction box cover 40, a fifth bolt hole 53 can be opened on the second sealing gasket 50, and a sixth bolt hole 18 can be opened on the junction box base 10. After the bolt 60 penetrates the fourth bolt hole 43 on the junction box cover 40, the fifth bolt hole 53 on the second sealing gasket 50 and the sixth bolt hole 18 on the junction box base 10, it is tightened with a nut to achieve a fixed connection between the junction box cover 40, the second sealing gasket 50 and the junction box base 10.

[0081] It can be seen that in addition to assembling the second sealing gasket 50 and the junction box base 10 together through the cooperation of the stop ring 17 and the inner circle rib 52, and assembling the second sealing gasket 50 and the junction box cover 40 together through the cooperation of two clamping rings and two circles of ribs, the junction box cover 40, the second sealing gasket 50 and the junction box base 10 are fixedly connected by the cooperation of bolts, bolt holes and nuts, thereby increasing the firmness and reliability of the assembly.

[0082] In a second aspect, an embodiment of the present invention provides a motor base, which includes a base body 30 and a junction box disposed on the base body 30, and the junction box is the junction box provided in the first aspect.

[0083] In a third aspect, an embodiment of the present invention provides a motor, which includes the motor base provided in the second aspect.

[0084] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0085] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solution of the present invention should be included in the scope of protection of the present invention.

Claims

1. A junction box, characterized in that: It comprises a junction box base (10) and a first sealing gasket (20), wherein: The first sealing gasket (20) is used to seal the connection between the junction box base (10) and the motor base body (30); the first sealing gasket (20) comprises a first plane gasket (25), a first convex rib ring (21) arranged on a first surface of the first plane gasket (25), and a second convex rib ring (24) arranged on a second surface of the first plane gasket (25); the first surface is a surface of the first plane gasket (25) used for contacting the junction box base (10), the second surface is a surface of the first plane gasket (25) used for contacting the base body (30), and the first surface and the second surface are the front and back surfaces of the first plane gasket (25) to each other; The junction box base (10) is provided with a groove ring (11), and the groove ring (11) is adapted to fit the first rib ring (21); After the junction box base (10), the first sealing gasket (20) and the base body (30) are fixedly connected, the first convex rib ring (21) is snap-fitted with the groove ring (11) to achieve sealing between the junction box base (10) and the first sealing gasket (20), and the second convex rib ring (24) is compressed to achieve sealing between the first sealing gasket (20) and the base body (30).

2. The junction box according to claim 1, characterized in that: The height of the first convex rib ring (21) is greater than the depth of the groove ring (11), the width of the first convex rib ring (21) is less than the width of the groove ring (11), and the difference between the height of the first convex rib ring (21) and the depth of the groove ring (11) is a first preset value, so that after the first convex rib ring (21) is inserted into the groove ring (11), the height of the first convex rib ring (21) is compressed by the first preset value.

3. The junction box according to claim 1, characterized in that: The junction box base (10) comprises a first plane portion (15) and a second plane portion (14) which are not in the same plane, the first plane portion (15) is hollow in the middle, the second plane portion (14) is located at the hollow position of the first plane portion (15), each part of the outer edge of the second plane portion (14) is connected to each part of the inner edge of the first plane portion (15), the second plane portion (14) protrudes toward the bottom of the junction box base (10) relative to the first plane portion (15), and the groove ring (11) is located on the second plane portion (14).

4. The junction box according to claim 1, characterized in that: The first sealing gasket (20) further comprises a plurality of pins (22) arranged on the first surface, a plurality of insertion holes (12) are provided on the junction box base (10), and positions of the plurality of pins (22) on the first surface correspond to positions of the plurality of insertion holes (12) on the junction box base (10) in a one-to-one manner, so that when the first rib ring (21) is inserted into the groove ring (11), each pin (22) on the first sealing gasket (20) is inserted into the insertion hole (12) at a corresponding position on the junction box base (10).

5. The junction box according to claim 4, characterized in that: The plurality of pins (22) are arranged on the first rib ring (21), and correspondingly, the plurality of insertion holes (12) are opened in the groove ring (11).

6. The junction box according to claim 1, characterized in that: The junction box base (10) is provided with a plurality of first bolt holes (13), the first sealing gasket (20) is provided with a plurality of second bolt holes (23), and a base body (30) of a motor base adapted to the junction box is provided with a plurality of third bolt holes (31). The positions of the plurality of first bolt holes (13) on the junction box base (10), the positions of the plurality of second bolt holes (23) on the first sealing gasket (20), and the positions of the plurality of third bolt holes (31) on the base body (30) correspond to each other. By means of bolts penetrating the first bolt holes (13), the second bolt holes (23), and the third bolt holes (31), the junction box base (10), the first sealing gasket (20), and the motor base are fixedly connected.

7. The junction box according to claim 1, characterized in that: It also includes a junction box cover (40) and a second sealing gasket (50) assembled between the junction box cover (40) and the junction box base (10), wherein: The junction box cover (40) has a first clamping ring (41) and a second clamping ring (42), wherein the first clamping ring (41) and the second clamping ring (42) are located on different planes; the second sealing gasket (50) comprises a second plane gasket (54), an outer ring convex rib (51) and an inner ring convex rib (52), wherein the outer ring convex rib (51) and the inner ring convex rib (52) are located on the same plane of the second plane gasket (54), and the inner ring convex rib (52) and the outer ring convex rib (51) have different heights; the first clamping ring (41) is matched with the outer ring convex rib (51), and the second clamping ring (42) is matched with the inner ring convex rib (52), so that when the second sealing gasket (50) and the junction box cover (40) are assembled, the outer ring convex rib (51) is inserted into the first clamping ring (41), and the inner ring convex rib (52) is inserted into the second clamping ring (42).

8. The junction box according to claim 7, characterized in that: The junction box cover (40) comprises a third plane portion (44) and a fourth plane portion (45) which are not on the same plane, the middle of the third plane portion (44) is hollow, the fourth plane portion (45) is located at the hollow position of the third plane portion (44), each part of the outer edge of the fourth plane portion (45) is connected to each part of the inner edge of the third plane portion (44), and the fourth plane portion (45) protrudes toward the top of the junction box cover (40) relative to the third plane portion (44); wherein: The first collar (41) is a circle of flange located on the outer periphery of the third plane portion (44), and the second collar (42) is a circle of steps formed by the height difference between the fourth plane portion (45) and the third plane portion (44); The height of the inner ring convex rib (52) is greater than the height of the outer ring convex rib (51), and the height difference between the inner ring convex rib (52) and the outer ring convex rib (51) is a first height difference; the height difference between the fourth plane portion (45) and the third plane portion (44) is a second height difference; the first height difference is greater than the second height difference, and the difference between the first height difference and the second height difference is a second preset value, so that when the second sealing gasket (50) and the junction box cover (40) are assembled, the inner ring convex rib (52) is compressed by the second preset value.

9. The junction box according to claim 7, characterized in that: A stop ring (17) is provided on the port plane (16) on the junction box base (10) that contacts the second sealing gasket (50), and the inner ring rib (52) is sleeved on the stop ring (17) to achieve assembly between the second sealing gasket (50) and the junction box base (10); wherein the size of the stop ring (17) is larger than the inner ring size of the inner ring rib (52), and the difference between the size of the stop ring (17) and the inner ring size of the inner ring rib (52) is a third preset value, so that the assembly of the second sealing gasket (50) and the junction box base (10) has an interference fit of the third preset value.

10. A motor base, characterized in that: It comprises a base body (30) and a junction box arranged on the base body (30), and the junction box is the junction box according to any one of claims 1 to 9.

11. A motor, characterized in that: The invention comprises the motor base as claimed in claim 10.

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