Waterproof motor

Abstract

A waterproof motor comprises a bracket and a shell. The bracket comprises a bottom wall, a side wall extending upwards from the periphery of the bottom wall and a waterproof wall unit arranged at the end, away from the bottom wall, of the side wall. The waterproof wall unit is provided with an annular first waterproof wall and an annular second waterproof wall surrounding the first waterproof wall at intervals. The height of the first waterproof wall is larger than that of the second waterproof wall. The first waterproof wall and the side wall define an internal space located in the first waterproof wall. A first groove is defined among the first waterproof wall, the second waterproof wall and the side wall. The housing is connected with the waterproof wall unit, goes deep into the first groove and covers the internal space.

Description

Technical Field

[0001] The invention relates to a motor, in particular to a waterproof motor. Background Art

[0002] The existing motor includes a bracket, a housing combined with the bracket, and a stator group located in the housing and the bracket. When the motor is installed in an outdoor environment, if it rains, rainwater may penetrate into the interior through the gap between the bracket and the housing, which may cause damage to the stator group. Therefore, there is still room for improvement in the waterproofness of the existing motor. Summary of the invention

[0003] One of the objects of the present invention is to provide a waterproof motor that can solve at least one of the above problems.

[0004] The waterproof motor of the present invention includes a bracket, including a bottom wall, a side wall extending upward from the periphery of the bottom wall, and a waterproof wall unit arranged at one end of the side wall away from the bottom wall, the waterproof wall unit has a first waterproof wall in an annular shape and a second waterproof wall in an annular shape and spaced around the first waterproof wall, the height of the first waterproof wall is greater than the height of the second waterproof wall, the first waterproof wall and the side wall define an internal space located in the first waterproof wall, and a first groove is defined between the first waterproof wall, the second waterproof wall and the side wall; and a shell, which is connected to the waterproof wall unit and extends into the first groove and covers the internal space.

[0005] In some implementations, the second waterproof wall forms a plurality of openings.

[0006] In some implementations, the waterproof wall unit further includes a third waterproof wall that is annular and spaced around the second waterproof wall, and the height of the second waterproof wall is greater than the height of the third waterproof wall.

[0007] In some implementations, the waterproof wall unit further includes a plurality of connection blocks respectively connected to the side wall and the third waterproof wall.

[0008] In some implementations, the waterproof wall unit further includes a plurality of guide blocks respectively connected to the side wall and the third waterproof wall, and the guide blocks are respectively located below at least a portion of the opening.

[0009] In some implementations, each guide block has two downwardly inclined guide slopes.

[0010] In some embodiments, a second groove is defined between the second waterproof wall and the third waterproof wall, the outer shell is cylindrical and has a top wall, a surrounding wall extending downward from the periphery of the top wall, and an outer annular wall extending radially outward and downward from the surrounding wall, and the surrounding wall and the outer annular wall extend into the first groove and the second groove respectively.

[0011] In some implementations, the surrounding wall has an inner wall surface and an outer wall surface opposite to the inner wall surface and connected to the outer annular wall, and the inner wall surface is located radially outside the first waterproof wall.

[0012] In some implementations, a heat sink is further included which is disposed on the bottom wall and has a plurality of heat sink fins which are spaced apart from each other.

[0013] The beneficial effect of the present invention is that the outer shell is joined to the waterproof wall unit and extends into the first groove and covers the internal space, and the height of the first waterproof wall and the second waterproof wall gradually increases from the outside to the inside, forming two layers of waterproof lines from the outside to the inside, which can effectively prevent rainwater from penetrating from the joint of the bracket and the outer shell, thereby achieving a waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the accompanying drawings, in which:

[0015] Figure 1 is a perspective view of a first embodiment of the waterproof motor of the present invention;

[0016] Figure 2 is a perspective exploded view of the first embodiment;

[0017] Figure 3 Is Figure 1 A sectional view obtained by the cutting line II II II;

[0018] Figure 4 yes Figure 3 A partial enlarged view of;

[0019] Figure 5 is a three-dimensional view of a bracket of the first embodiment;

[0020] Figure 6 is a top view of the bracket of the first embodiment;

[0021] Figure 7 Is Figure 6 A schematic side view of a partial section obtained by the cutting line VI I-VI I;

[0022] Figure 8 is a perspective view of a second embodiment of the waterproof motor of the present invention;

[0023] Fig. 9 is an exploded perspective view of the second embodiment;

[0024] Fig.10 Is Figure 8 A sectional view obtained by the cutting line XX;

[0025] Fig.11 is a perspective view of a third embodiment of the waterproof motor of the present invention;

[0026] Fig.12 is an exploded perspective view of the third embodiment; and

[0027] Fig.13 Is Fig.11 A sectional view obtained by the cutting line XI I I-XI II.

[0028] BCPI-240332 Page 3 / 7 DETAILED DESCRIPTION

[0029] Before the present invention is described in detail, it should be noted that similar components are denoted by the same reference numerals in the following description.

[0030] See also Figures 1 to 3 A first embodiment of the waterproof motor of the present invention is suitable for being installed in an outdoor environment. The waterproof motor comprises a bracket 1, a housing 2, a stator assembly 3, a heat sink 4 and a shaft 5.

[0031] Matching reference Figures 4 to 6 The bracket 1 includes a bottom wall 11, a side wall 12 extending upward from the periphery of the bottom wall 11, a waterproof wall unit 13 disposed at one end of the side wall 12 away from the bottom wall 11, and four mounting wings 14 connected to the side wall 12 and protruding outward. The waterproof wall unit 13 has a first waterproof wall 131 in an annular shape, a second waterproof wall 132 in an annular shape and spaced around the first waterproof wall 131, a third waterproof wall 133 in an annular shape and spaced around the second waterproof wall 132, eight connecting blocks 134 respectively connecting the side wall 12 and the third waterproof wall 133, and four guide blocks 135 respectively connecting the side wall 12 and the third waterproof wall 133. The number of the connecting blocks 134 and the guide blocks 135 is not limited to this, as long as there are multiple.

[0032] See also Figures 4 to 7The height of the first waterproof wall 131 is greater than the height of the second waterproof wall 132, and the height of the second waterproof wall 132 is greater than the height of the third waterproof wall 133, so that the first waterproof wall 131, the second waterproof wall 132 and the third waterproof wall 133 are in a stepped shape. The first waterproof wall 131 and the side wall 12 define an internal space 136 located inside the first waterproof wall 131. A first groove 137 is defined between the first waterproof wall 131, the second waterproof wall 132 and the side wall 12, and a second groove 138 is defined between the second waterproof wall 132 and the third waterproof wall 133. The second waterproof wall 132 forms eight annularly spaced openings 132a, and the guide blocks 135 are respectively located below at least part of the openings 132a, and each guide block 135 has two downwardly inclined guide slopes 135a. Specifically, the guide blocks 135 are located at four positions corresponding to the openings 132a of the mounting wings 14, and the connection blocks 134 are divided into four groups, two by two, and are respectively arranged at the remaining four openings 132a below which do not have the guide blocks 135, but the present embodiment is not limited thereto. The mounting wings 14 are suitable for allowing a plurality of positioning members (not shown, such as bolts) to pass through to install the waterproof motor of the present invention at the application site.

[0033] The housing 2 is coupled to the waterproof wall unit 13 and extends into the first groove 137 and covers the internal space 136. The housing 2 includes a cylindrical top wall 21, a surrounding wall 22 extending downward from the periphery of the top wall 21, and an outer ring wall 23 extending radially outward and downward from the surrounding wall 22. The surrounding wall 22 and the outer ring wall 23 are stepped and extend into the first groove 137 and the second groove 138 respectively. The surrounding wall 22 has an inner wall surface 221 and an outer wall surface 222 opposite to the inner wall surface 221 and connected to the outer ring wall 23. The inner wall surface 221 is located radially outside the first waterproof wall 131. The stator group 3 is located inside the bracket 1 and the housing 2, and includes a stator 31 located on the relatively outer side in the radial direction and a winding group 32 located on the relatively inner side in the radial direction. The shaft 5 can be driven by the stator assembly 3 to rotatably penetrate the bracket 1 and the housing 2 to output power to the outside. The heat sink 4 is disposed on the bottom wall 11 and includes a plurality of fins 41, which are suitable for helping the waterproof motor of the present invention to dissipate heat.

[0034] See also Figure 3 , Figure 4 , Figure 6 and Figure 7Since the waterproof motor of the present invention is arranged in an outdoor environment, when it rains, when the housing 2 is combined with the bracket 1, the surrounding wall 22 and the outer ring wall 23 extend into the first groove 137 and the second groove 138 of the waterproof wall unit 13 respectively, and the heights of the first waterproof wall 131, the second waterproof wall 132 and the third waterproof wall 133 are gradually increased from the outside to the inside, forming a multi-layer waterproof line from the outside to the inside, which can effectively prevent rainwater from penetrating from the combination of the bracket 1 and the housing 2. Even if a little rainwater seeps in along the outer ring wall 23, it will eventually flow into the first groove 137 due to the guiding effect of the lower end of the surrounding wall 22 of the outer shell 2. However, the rainwater flowing into the first groove 137 will flow into the second groove 138 through the opening 132a and flow out through the guiding slope 135a of the guide block 135 to leave the waterproof motor of the present invention, thereby preventing rainwater from seeping into the internal space 136, achieving a waterproof effect, and the stator group 3 will not be at risk of damage. Similarly, even if a little rainwater penetrates through the joint between the outer shell 2 and the axis 5 and the outer shell 2, due to the guiding effect of the inner wall surface 221 of the surrounding wall 22, the rainwater will flow downward along the inner wall surface 221 and finally flow into the first groove 137. The rainwater flowing into the first groove 137 will flow into the second groove 138 through the opening 132a and flow out through the guiding slope 135a of the guide block 135 to leave the waterproof motor of the present invention, thereby achieving the same waterproof effect.

[0035] It should be noted that, in other embodiments, the waterproof wall unit 13 may also only have the first waterproof wall 131 and the second waterproof wall 132, and the third waterproof wall 133, the connecting block 134 and the guide block 135 are omitted. The outer ring wall 23 is also omitted in the outer shell 2. The surrounding wall 22 of the outer shell 2 is connected to the waterproof wall unit 13 and extends into the first groove 137 and covers the internal space 136. The height of the first waterproof wall 131 and the second waterproof wall 132 is gradually increased from the outside to the inside, forming two layers of waterproof lines from the outside to the inside, which can effectively prevent rainwater from penetrating from the joint of the bracket 1 and the outer shell 2, and can also achieve the waterproof effect. The relevant test has been passed by SGS through the test specification IEC 60529Edition 2.2:2013--IPX5.

[0036] It is worth mentioning that, since the present invention forms a pressure difference between the inside and outside of the motor by setting up the first waterproof wall 131, the second waterproof wall 132 and the third waterproof wall 133, it is difficult for dust to enter through the pores, thereby achieving a dustproof effect. The relevant test has passed the test specification IEC 60529Edition 2.2:2013--IP5X by SGS.

[0037] See also Figures 8 to 10A second embodiment of the waterproof motor of the present invention comprises a bracket 1', a housing 2', a stator assembly 3, a plurality of heat sinks 4' and an axis 5. The second embodiment is similar to the first embodiment, except that the bracket 1', the housing 2' and the heat sink 4' are different from those of the first embodiment.

[0038] The bracket 1' comprises a bottom wall 11', a side wall 12' extending upward from the periphery of the bottom wall 11', a waterproof wall unit 13' disposed at one end of the side wall 12' away from the bottom wall 11', and four mounting wings 14' connected to the waterproof wall unit 13' and protruding outward. The function of the mounting wings 14' is the same as that of the first embodiment, and will not be described in detail. The waterproof wall unit 13' is detachably disposed at the end of the side wall 12' away from the bottom wall 11', which is different from the waterproof wall unit 13' of the first embodiment, which is integrally formed with the side wall 12 (see Figure 3 ). The waterproof wall unit 13' includes a first waterproof wall 131', a second waterproof wall 132', a third waterproof wall 133' and a waterproof cover plate 130' connected to the side wall 12' for the first waterproof wall 131', the second waterproof wall 132' and the third waterproof wall 133' to be installed. A first groove 137' is defined between the first waterproof wall 131' and the second waterproof wall 132', and a second groove 138' is defined between the second waterproof wall 132' and the third waterproof wall 133'.

[0039] The height of the side wall 12' is greater than that of the side wall 12 of the first embodiment (see Figure 2), and the end of the side wall 12' away from the bottom wall 11' forms a connection flange 121 for the waterproof wall unit 13' to lock. The inner space defined by the bottom wall 11' and the side wall 12' can be used to set components such as circuit boards. The housing 2' is cylindrical and connected to the waterproof wall unit 13', and has a top wall 21, a surrounding wall 22 extending downward from the periphery of the top wall 21, and an outer ring wall unit 24 arranged at the lower end of the surrounding wall 22. The lower end of the surrounding wall 22 forms a connection flange 223 for the outer ring wall unit 24 to lock. The outer ring wall unit 24 has a first outer ring wall 241 extending downward, a second outer ring wall 242 surrounding the first outer ring wall 241 and a third outer ring wall 243 surrounding the second outer ring wall 242. The first outer ring wall 241 and the second outer ring wall 242 are stepped and extend into the first groove 137' and the second groove 138' respectively. The third outer ring wall 243 covers and surrounds the third waterproof wall 133'. When the outer shell 2' is combined with the bracket 1', the first outer ring wall 241 and the second outer ring wall 242 extend into the first groove 137' and the second groove 138' of the waterproof wall unit 13 respectively, and the third outer ring wall 243 covers and surrounds the third waterproof wall 133', and cooperates with the first waterproof wall 131', the second waterproof wall 132' and the third waterproof wall 133' to gradually increase in height from the outside to the inside, forming a multi-layer waterproof line from the outside to the inside, which can also effectively prevent rainwater from penetrating from the joint of the bracket 1' and the outer shell 2'.

[0040] See also Figures 11 to 13A third embodiment of the waterproof motor of the present invention is similar to the second embodiment, except that the waterproof wall unit 13" of the bracket 1" has a different pattern. The waterproof wall unit 13" includes a first waterproof wall 131", a second waterproof wall 132", a third waterproof wall 133" and a waterproof cover plate 130" connected to the side wall 12' for setting the first waterproof wall 131", the second waterproof wall 132" and the third waterproof wall 133". The waterproof cover plate 130" has an inclined surface 130a" and a plurality of ribs 130b" radially arranged on the inclined surface 130a". Similarly, when the outer shell 2' is combined with the bracket 1", the first outer ring wall 241 and the second outer ring wall 242 extend into the first groove 137' and the second groove 138' of the waterproof wall unit 13 respectively, and the third outer ring wall 243 covers and surrounds the third waterproof wall, and cooperates with the height of the first waterproof wall 131", the second waterproof wall 132" and the third waterproof wall 133" to gradually increase from the outside to the inside, forming a multi-layer waterproof line from the outside to the inside, which can also effectively prevent rainwater from penetrating from the joint of the bracket 1" and the outer shell 2'. It should be noted that no matter the first embodiment, the second embodiment or the third embodiment, they all have a good waterproof structure that can achieve IP55 level waterproof and dustproof effect, and the components such as circuit boards are arranged on the brackets 1', 1", 1", which can be more convenient for maintenance and replacement.

[0041] To sum up, when the waterproof motor of the present invention is combined with the bracket 1 through the shell 2, the surrounding wall 22 and the outer ring wall 23 extend into the first groove 137 and the second groove 138 of the waterproof wall unit 13 respectively, and cooperate with the first waterproof wall 131, the second waterproof wall 132 and the third waterproof wall 133. The heights of the three walls are gradually increased from the outside to the inside, forming a multi-layer waterproof line from the outside to the inside, which can effectively prevent rainwater from penetrating from the combination of the bracket 1 and the shell 2. Even if a little rainwater infiltrates along the outer ring wall 23, it will eventually flow into the first groove 137 due to the guiding effect of the lower end of the surrounding wall 22 of the housing 2, and the rainwater in the first groove 137 will flow into the second groove 138 through the opening 132a and flow out of the waterproof motor of the present invention through the guiding slope 135a of the guiding block 135, thereby preventing rainwater from infiltrating into the internal space 136, achieving the waterproof effect, and the stator assembly 3 will not be damaged. It has been measured that the dustproof and waterproof effect of IP55 can be achieved. Therefore, the purpose of the present invention can be achieved.

[0042] The above descriptions are merely embodiments of the present invention and should not be used to limit the scope of the present invention. That is, any simple equivalent changes and modifications made according to the claims and description of the present invention still fall within the scope of the present invention.

Claims

1. A waterproof motor, characterized in that: Include: A bracket, comprising a bottom wall, a side wall extending upward from the periphery of the bottom wall, and a waterproof wall unit arranged at one end of the side wall away from the bottom wall, the waterproof wall unit having an annular first waterproof wall and an annular second waterproof wall spaced around the first waterproof wall, the height of the first waterproof wall being greater than the height of the second waterproof wall, the first waterproof wall and the side wall defining an internal space within the first waterproof wall, and a first groove being defined between the first waterproof wall, the second waterproof wall and the side wall; and The outer shell is connected to the waterproof wall unit and extends into the first groove and covers the inner space.

2. The waterproof motor according to claim 1, characterized in that: The second waterproof wall forms a plurality of openings.

3. The waterproof motor according to claim 2, characterized in that: The waterproof wall unit also includes a third waterproof wall that is annular and spaced around the second waterproof wall, and the height of the second waterproof wall is greater than that of the third waterproof wall.

4. The waterproof motor according to claim 3, characterized in that: The waterproof wall unit also includes a plurality of connection blocks respectively connected to the side wall and the third waterproof wall.

5. The waterproof motor according to claim 3, characterized in that: The waterproof wall unit also includes a plurality of guide blocks respectively connected to the side wall and the third waterproof wall, and the guide blocks are respectively located below at least part of the opening.

6. The waterproof motor according to claim 5, characterized in that: Each guide block has two downwardly inclined guide slopes.

7. The waterproof motor according to claim 4, characterized in that: A second groove is defined between the second waterproof wall and the third waterproof wall. The outer shell is cylindrical and has a top wall, a surrounding wall extending downward from the periphery of the top wall, and an outer annular wall extending radially outward and downward from the surrounding wall. The surrounding wall and the outer annular wall extend into the first groove and the second groove respectively.

8. The waterproof motor according to claim 7, characterized in that: The surrounding wall has an inner wall surface and an outer wall surface opposite to the inner wall surface and connected to the outer annular wall. The inner wall surface is located radially outside the first waterproof wall.

9. The waterproof motor according to claim 1, characterized in that: The invention also comprises a heat sink arranged on the bottom wall, wherein the heat sink has a plurality of heat sink fins spaced apart from each other.

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