Electric Motor

Abstract

The present invention discloses a motor, which includes: a stator, a power board, a stator adapter and a stator insulator; the stator insulator is used to accommodate the stator, and the power board is connected to the stator insulator through the stator adapter; the first end of the stator adapter in the axial direction of the motor is engaged with the power board, and the second end of the stator adapter in the axial direction of the motor is provided with a plurality of support members of different lengths, and the end surface of the stator insulator facing the stator adapter has a plurality of slots of corresponding depths and positions, and the slots are used to accommodate the support members, and the plurality of support members are arranged at equal intervals in the circumferential direction. The stator insulator of the motor has support members of different lengths, and when these support members of different lengths are matched and engaged with corresponding or non-corresponding slots respectively, the height of the power board can be adjusted.

Description

Technical Field

[0001] The present invention relates to the field of machinery, and in particular to an electric motor. Background Art

[0002] In the stator structure of the existing brushless DC water pump motor, the position of the fixed water pump power board cannot be changed, which makes the overall water pump height unable to be adjusted. The maximum installation height of the power board has determined the height of the water pump motor. When a water pump motor with a smaller height is required, the overall size of the stator part can only be modified and the mold opened again.

[0003] The production process of the stator part is integrated injection molding, and the insulating plastic on the outside of the stator is an integrated structure. The assembly height of the power board cannot be adjusted, which brings a problem: users need a water pump structure with a lower height, the stator part cannot be lowered, and the end cover of the water pump cannot be lowered. If the requirements are to be met, the stator needs to be re-molded, and the versatility is poor. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a motor in order to overcome the defect that the position of the power board in the prior art cannot be adjusted.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] An electric motor comprises: a stator, a power board, a stator adapter and a stator insulating member;

[0007] The stator insulator is used to accommodate the stator, and the power board is connected to the stator insulator through the stator adapter;

[0008] The first end of the stator adapter in the axial direction of the motor is engaged with the power board, and the second end of the stator adapter in the axial direction of the motor is provided with a plurality of support members, and the plurality of support members extend toward the second end of the stator adapter and have at least a first extension length and a second extension length, and the first extension length is greater than the second extension length. The end surface of the stator insulator facing the stator adapter has a plurality of slots, and the slots are used to accommodate the support members. The plurality of slots have at least a first depth and a second depth, and the first depth and the second depth correspond to the first extension length and the second extension length respectively. The plurality of support members are arranged at equal intervals in the circumferential direction, and the positions of the plurality of slots correspond to the positions of the plurality of support members.

[0009] In the present solution, the stator insulating member of the motor has support members of different lengths. When these support members of different lengths are matched and engaged with corresponding slots, the power board is closer to the stator. When these support members of different lengths are matched with non-corresponding slots, for example, when a longer support member is inserted into a shallower slot, the power board can be further away from the stator. Therefore, when the motor has higher power and the power board needs a larger heat dissipation space, there is no need to redesign the stator part, and only the stator adapter needs to be re-engaged. Therefore, the motor realizes that the fixed height of the power board is adjustable and avoids re-molding the stator part.

[0010] Preferably, the support member includes a first support member, a second support member and a third support member, and the card slot includes a first card slot, a second card slot and a third card slot;

[0011] The first support member has the first extension length, the second support member has the second extension length, and the third support member has a third extension length, wherein the third extension length is smaller than the second extension length;

[0012] The depths of the first card slot, the second card slot and the third card slot correspond to the extension lengths of the first support member, the second support member and the third support member respectively;

[0013] The first support member, the second support member and the third support member are arranged in sequence in a clockwise direction or a counterclockwise direction along the circumference of the stator adapter.

[0014] In this solution, the sizes of the various supporting members and the corresponding card slots are increased or decreased in sequence in the same direction, which can facilitate the step-by-step adjustment of the height of the power board.

[0015] Preferably, the motor also includes a casing, which is configured to have a redundant space between the power board and the inner end surface of the casing facing the power board, and the height of the redundant space is configured to allow a support member with a first extension length to be inserted into a slot with a second depth.

[0016] In this solution, sufficient redundant space is provided inside the housing of the motor to facilitate the adjustment of the stator adapter.

[0017] Preferably, the housing includes a first shell, and the first shell is detachably connected to a first end of the stator insulator in the axial direction of the motor.

[0018] In this solution, the first shell is detachable, so it is convenient to disassemble the first shell and adjust the stator adapter inside it.

[0019] Preferably, the stator insulator includes an annular outer peripheral portion, and the first housing and the stator insulator are connected via a fastener inserted through the outer peripheral portion.

[0020] Preferably, the stator insulator comprises an annular outer circumference and an inner circumference arranged inside the outer circumference, the stator is arranged in an inner cavity of the inner circumference, and the slot is formed between the outer circumference and the inner circumference.

[0021] Preferably, the inner peripheral portion includes a plurality of the extension portions, the plurality of the extension portions are arranged at equal intervals in the circumferential direction and have a receiving groove opening toward the inner peripheral side, and the receiving groove is a part of the internal cavity.

[0022] Preferably, the stator adapter also includes an annular main body portion, a first end of the annular main body portion in the axial direction of the motor is provided with a snap buckle for engaging with the outer peripheral edge of the power board, and a second end of the annular main body portion in the axial direction of the motor is provided with the support member.

[0023] Preferably, the plurality of support members are in sheet shape and have the same width.

[0024] In this solution, the support part is configured to be sheet-shaped with the same width, so that when the stator adapter is adjusted, the support part can be matched with the slot.

[0025] Preferably, the plurality of support members have an arc in a circumferential direction of the motor.

[0026] In this solution, since the stator adapter is rotated to achieve adjustment, the support member is arranged to have an arc in the circumferential direction to facilitate its matching with the slot.

[0027] The positive and progressive effect of the present invention is that the stator insulating member of the motor has support members of different lengths. When these support members of different lengths are matched and engaged with corresponding slots, the power board is closer to the stator. When these support members of different lengths are matched with non-corresponding slots, for example, when longer support members are inserted into shallower slots, the power board can be further away from the stator. Therefore, when the motor has higher power and the power board needs a larger heat dissipation space, there is no need to redesign the stator part, and only the stator adapter needs to be re-engaged. Therefore, the motor realizes that the fixed height of the power board is adjustable and avoids re-molding the stator part. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of a motor according to a preferred embodiment of the present invention.

[0029] Figure 2 Schematic diagram of the cross-sectional structure of a motor according to a preferred embodiment of the present invention.

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of a stator adapter according to a preferred embodiment of the present invention.

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of a stator insulator according to a preferred embodiment of the present invention.

[0032] Figure 5 Schematic diagram of the cross-sectional structure of a stator insulator according to a preferred embodiment of the present invention.

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of a stator according to a preferred embodiment of the present invention.

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of a motor in a low size according to a preferred embodiment of the present invention, wherein the first housing is removed.

[0035] Figure 8 It is a schematic diagram of the exploded structure of a motor in a low size according to a preferred embodiment of the present invention, wherein the first housing is removed.

[0036] Fig. 9 It is a schematic diagram of the three-dimensional structure of a motor in high size according to a preferred embodiment of the present invention, wherein the first housing is removed.

[0037] Fig.10 It is a schematic diagram of the exploded structure of a motor in high size according to a preferred embodiment of the present invention, wherein the first housing is removed.

[0038] Description of reference numerals:

[0039] Motor 100

[0040] Housing 101

[0041] First housing 105

[0042] Inner end surface 106

[0043] Redundant Space 107

[0044] Second housing 112

[0045] The third housing 113

[0046] Bolt 115

[0047] Stator 120

[0048] Rotor 130

[0049] Power board 140

[0050] Stator adapter 141

[0051] Annular main body 143

[0052] Buckle 145

[0053] The first support member 147

[0054] The second support member 149

[0055] The third support member 151

[0056] Stator insulation 160

[0057] Internal cavity 161

[0058] Peripheral part 163

[0059] Inner circumference 165

[0060] Extension 167

[0061] Receiving slot 169

[0062] First card slot 171

[0063] Second card slot 172

[0064] The third card slot 173

[0065] Rotating shaft 180

[0066] Bushing 190 DETAILED DESCRIPTION

[0067] The present invention is further described below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0068] like Figure 1-2 As shown, the motor 100 includes: a housing 101 , a stator 120 , a rotor 130 , a power board 140 , a stator adapter 141 and a stator insulator 160 .

[0069] The housing 101 includes a first housing 105, a second housing 112, and a third housing 113. The first housing 105, the stator insulator 160, the second housing 112, and the third housing 113 are Figure 2 The first housing 105 is connected together in sequence from top to bottom by a plurality of bolts 115 (fasteners) at the edge. The first housing 105 is detachably connected to the first end of the stator insulator 160 in the axial direction of the motor 100. The first housing 105 is detachable, so that it is convenient to disassemble the first housing 105 and adjust the stator adapter 141 inside it.

[0070] like Figure 6As shown, the stator 120 has an annular structure to form a closed magnetic circuit. The material of the stator 120 can adopt the stator 120 material in the prior art, which will not be repeated here. In other embodiments, the stator 120 can also adopt other shapes and structures that can provide a closed magnetic circuit, and the present invention is not limited to this.

[0071] In this embodiment, the rotor 130 is a cylindrical component sleeved on the rotating shaft 180, but the present invention is not limited thereto, and those skilled in the art can select the shape and structure of the rotor 130 as needed.

[0072] The power board 140 is a plate-shaped structure and is used to control voltage, current, and on-off from a power source and provide power to the rotor 130 and / or the stator 120 .

[0073] The stator insulator 160 is used to accommodate the stator 120. In this embodiment, the stator insulator 160 is made of plastic and is integrally injection-molded on the outer surface of the stator 120.

[0074] The stator adapter 141 is used to connect the power board 140 and the stator insulator 160 . The power board 140 is connected to the stator insulator 160 through the stator adapter 141 .

[0075] like Figure 3 As shown, the first end of the stator adapter 141 in the axial direction of the motor 100 is engaged with the power board 140, and the second end of the stator adapter 141 in the axial direction of the motor 100 is provided with a plurality of support members, and the plurality of support members extend toward the second end of the stator adapter 141 and have at least a first extension length and a second extension length, and the first extension length is greater than the second extension length. The end surface of the stator insulator 160 facing the stator adapter 141 has a plurality of slots, and the slots are used to accommodate the support members, and the plurality of slots have at least a first depth and a second depth, and the first depth and the second depth correspond to the first extension length and the second extension length, respectively. The plurality of support members are arranged at equal intervals in the circumferential direction, and the positions of the plurality of slots correspond to the positions of the plurality of support members. The "corresponding" here means that the extension length and the depth are substantially the same, but not absolutely the same. The difference in depth relative to the extension length is within a certain range and does not affect the implementation of the present invention, and can be considered to fall within the protection scope of the present invention.

[0076] The stator insulating member 160 of the motor 100 has support members of different lengths. When these support members of different lengths are matched and engaged with corresponding slots, the power board 140 is closer to the stator 120. When these support members of different lengths are matched with non-corresponding slots, for example, when a longer support member is inserted into a shallower slot, the power board 140 can be further away from the stator 120. Therefore, when the motor 100 has higher power and the power board 140 needs a larger heat dissipation space, there is no need to redesign the stator 120 part, and only the stator adapter 141 needs to be re-engaged. Therefore, the motor 100 realizes that the fixed height of the power board 140 is adjustable and avoids re-molding the stator 120 part.

[0077] The support member includes a first support member 147 , a second support member 149 and two third support members 151 , and the card slot includes a first card slot 171 , a second card slot 172 and two third card slots 173 .

[0078] The first support member 147 has a first extension length, the second support member 149 has a second extension length, and the third support member 151 has a third extension length, which is smaller than the second extension length.

[0079] The depths of the first clamping groove 171 , the second clamping groove 172 and the third clamping groove 173 correspond to the extension lengths of the first support member 147 , the second support member 149 and the third support member 151 , respectively.

[0080] The first support member 147, the second support member 149 and the third support member 151 are sequentially arranged in a clockwise direction or a counterclockwise direction along the circumference of the stator adapter 141. The sizes of each support member and the corresponding slot are sequentially increased or decreased in the same direction, which can facilitate the step-by-step adjustment of the height of the power board 140.

[0081] Of course, those skilled in the art may also disrupt the arrangement order of the supports as needed.

[0082] In this embodiment, four support members and four slots are provided, and three extension lengths and three slot depths are provided, so as to achieve three-level adjustment of the height of the power board 140. In other embodiments, only two support members and two slots may be provided, so as to achieve two-level adjustment of the height of the power board 140, or more extension lengths and slot depths may be provided to achieve more-level adjustment.

[0083] like Figure 3 As shown, the stator adapter 141 also includes an annular main body 143, and a buckle 145 for engaging with the outer peripheral edge of the power board 140 is provided at the first end of the annular main body 143 in the axial direction of the motor 100, and a support is provided at the second end of the annular main body 143 in the axial direction of the motor 100.

[0084] Preferably, the plurality of support members are in sheet shape and have the same width.

[0085] In this solution, the support portion is configured to be sheet-shaped with the same width, so that when the stator adapter 141 is adjusted, the support member can be matched with the slot.

[0086] Preferably, the plurality of supports have an arc in a circumferential direction of the motor 100 .

[0087] In this solution, since the stator adapter 141 is rotated to achieve adjustment, the support member is arranged to have an arc in the circumferential direction to facilitate its matching with the slot.

[0088] like Figure 4-5 As shown, the stator insulator 160 includes an annular outer peripheral portion 163 , and the first housing 105 is connected to the stator insulator 160 via a fastener inserted through the outer peripheral portion 163 . The outer peripheral portion 163 forms a part of the housing 101 .

[0089] The stator insulator 160 further includes an inner circumference portion 165 disposed inside the outer circumference portion 163 , the stator 120 is disposed in the inner cavity 161 of the inner circumference portion 165 , and a slot is formed between the outer circumference portion 163 and the inner circumference portion 165 .

[0090] Preferably, the inner peripheral portion 165 includes a plurality of extension portions 167 , which are arranged at equal intervals in the circumferential direction and have a receiving groove 169 opening toward the inner peripheral side, and the receiving groove 169 is a part of the inner cavity 161 .

[0091] The first shell 105 of the housing 101 is configured to have a redundant space 107 between the power board 140 and the inner end surface 106 of the housing 101 facing the power board 140, and the height of the redundant space 107 is configured to allow a support member having a first extension length to be inserted into a slot having a second depth. Sufficient redundant space 107 is provided inside the housing 101 of the motor 100 to facilitate adjustment of the stator adapter 141.

[0092] The motor 100 further includes a rotating shaft 180 and a sleeve 190. The rotor 130 is sleeved on the rotating shaft 180, and the sleeve 190 is disposed between the stator 120 and the rotor 130. The rotation of the rotor 130 drives the rotating shaft 180 to rotate.

[0093] The following is based on Figure 7-10 The operation of the motor 100 of this embodiment will be described.

[0094] like Figure 7-8As shown, when the power of the motor 100 is small and the heat dissipation requirement is not high, a low-size motor 100 installation method is adopted, and each support member of the stator adapter 141 is inserted into a slot of corresponding depth, that is, the first support member 147 is inserted into the first slot 171, the second support member 149 is inserted into the second slot 172, the third support member 151 is inserted into the third slot 173, and so on. At this time, all the support members are immersed in the slots, so that after the assembly is completed, the following is formed. Figure 7 In the illustrated low-size motor 100 , the power board 140 is closest to the stator 120 and the rotor 130 .

[0095] like Figure 9-10 As shown, the power of the motor 100 is relatively large, and the heat dissipation requirement is relatively high. A high-size motor 100 is installed. First, the bolts 115 are removed, the first housing 105 is removed, and the power board 140 and the stator adapter 141 are moved upward along the axial direction so that the support member is disengaged from the slot, and then the longer support member of the stator adapter 141 is inserted into the shallower slot, that is, from Figure 8 In the state of the stator adapter 141, the stator adapter 141 is rotated 90° around the central axis (since four support members are provided in this embodiment, it is rotated 90°), so that the first support member 147 is inserted into the third slot 173. Since the extension length of the first support member 147 is longer than the depth of the third slot 173, the power board 140 is lifted, so that after the assembly is completed, the following is formed. Fig. 9 In the illustrated high-sized motor 100 , the power board 140 is farthest from the stator 120 and the rotor 130 .

[0096] The height of the power board 140 depends on the slot into which the highest support member is inserted.

[0097] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0098] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An electric motor, characterized in that: It includes: stator, power board, stator adapter and stator insulation; The stator insulator is used to accommodate the stator, and the power board is connected to the stator insulator through the stator adapter; The first end of the stator adapter in the axial direction of the motor is engaged with the power board, and the second end of the stator adapter in the axial direction of the motor is provided with a plurality of support members, and the plurality of support members extend toward the second end of the stator adapter and have at least a first extension length and a second extension length, and the first extension length is greater than the second extension length. The end surface of the stator insulator facing the stator adapter has a plurality of slots, and the slots are used to accommodate the support members. The plurality of slots have at least a first depth and a second depth, and the first depth and the second depth correspond to the first extension length and the second extension length respectively. The plurality of support members are arranged at equal intervals in the circumferential direction, and the positions of the plurality of slots correspond to the positions of the plurality of support members.

2. The electric motor according to claim 1, characterized in that The support member includes a first support member, a second support member and a third support member, and the card slot includes a first card slot, a second card slot and a third card slot; The first support member has the first extension length, the second support member has the second extension length, and the third support member has a third extension length, wherein the third extension length is smaller than the second extension length; The depths of the first card slot, the second card slot and the third card slot correspond to the extension lengths of the first support member, the second support member and the third support member respectively; The first support member, the second support member and the third support member are arranged in sequence in a clockwise direction or a counterclockwise direction along the circumference of the stator adapter.

3. The electric motor according to claim 1, characterized in that The motor also includes a housing, which is configured to have a redundant space between the power board and an inner end surface of the housing facing the power board, and the height of the redundant space is configured to allow a support member with a first extension length to be inserted into a slot with a second depth.

4. The electric motor according to claim 3, characterized in that The housing includes a first shell detachably connected to a first end of the stator insulator in an axial direction of the motor.

5. The electric motor according to claim 4, characterized in that The stator insulator includes an annular outer peripheral portion, and the first housing and the stator insulator are connected via a fastener inserted through the outer peripheral portion.

6. The electric motor according to claim 1, characterized in that The stator insulator includes an annular outer peripheral portion and an inner peripheral portion arranged on the inner peripheral side of the outer peripheral portion, the stator is arranged in an inner cavity of the inner peripheral portion, and the clamping groove is formed between the outer peripheral portion and the inner peripheral portion.

7. The electric motor according to claim 6, characterized in that The inner peripheral portion includes a plurality of extension portions, which are arranged at equal intervals in the circumferential direction and have a receiving groove opening toward the inner peripheral side, and the receiving groove is a part of the internal cavity.

8. The electric motor according to claim 1, characterized in that The stator adapter also includes an annular main body, a first end of which in the axial direction of the motor is provided with a snap-fit ​​for engaging with the outer peripheral edge of the power board, and a second end of which in the axial direction of the motor is provided with the support.

9. The electric motor according to claim 8, characterized in that The plurality of support members are in sheet shape and have the same width.

10. The electric motor according to claim 9, characterized in that The plurality of support members have an arc in a circumferential direction of the motor.

Images