CN212676987U - Bobbin assembly and motor including the same - Google Patents
Bobbin assembly and motor including the same Download PDFInfo
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- CN212676987U CN212676987U CN202021749253.6U CN202021749253U CN212676987U CN 212676987 U CN212676987 U CN 212676987U CN 202021749253 U CN202021749253 U CN 202021749253U CN 212676987 U CN212676987 U CN 212676987U
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- terminal
- bobbin
- terminal block
- circuit board
- flange portion
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- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 abstract description 4
- 230000004048 modification Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
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Abstract
The utility model provides a bobbin group subassembly reaches motor including this bobbin group subassembly can avoid the circuit board to take place the slope effectively. A bobbin assembly for a motor (M), comprising: a bobbin having a main body portion (41) that is cylindrical and extends in an axial direction, and around which a coil wire (L) is wound, and a terminal block (44); the terminal block protrudes from the main body portion to the radial outside and is used for winding a coil wire (L); a plurality of terminal pins (5) that protrude from the outer surface of the terminal block in the radial direction; and a circuit board supported by the terminal block and connected to the plurality of terminal pins, wherein first protrusions (441) are provided on both ends of the outer surface in the radial direction, which are located outside the plurality of terminal pins, in the direction orthogonal to the (X) direction, the first protrusions are formed over the entire axial range of the outer surface in the radial direction, and the circuit board is supported by the first protrusions and floats up from the root portions of the terminal pins.
Description
Technical Field
The utility model relates to a coiling has wire-wound bobbin subassembly and reaches motor including this bobbin subassembly.
Background
Conventionally, there is known a motor including a bobbin assembly including: a bobbin including a main body portion that is cylindrical and extends in an axial direction and around which a coil wire is wound, and a terminal block that is configured to protrude radially outward from the main body portion; a plurality of terminal pins that protrude from the radially outer surface of the terminal block, respectively, and around which a coil wire drawn out from the main body is wound; and a circuit board having a through hole, supported on a radially outer side surface of the terminal block in such a manner that the terminal pin passes through the through hole, and electrically connected to the plurality of terminal pins.
In the bobbin assembly having the above-described configuration, the coil wire wound around the root portion of the terminal pin may be pressed against the radially outer side surface of the terminal block by the portion around the through-hole of the circuit board, thereby causing a wire breakage.
To solve this problem, the following structure has been proposed: a projection is provided at a central portion between the terminal pins on a radially outer surface of the terminal block, and the circuit board is supported by the projection so as to be separated from the radially outer surface.
However, when the circuit board is supported only by the projection at the center of the terminal block as described above, both ends of the circuit board are not supported and are likely to be inclined.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems, and it is an object of the present invention to provide a bobbin assembly and a motor including the same, which can effectively prevent a circuit board from being inclined.
In order to achieve the above object, a first aspect of the present invention provides a bobbin assembly for a motor, including: a bobbin including a main body portion that is cylindrical and extends in an axial direction and around which a coil wire is wound, and a terminal block that protrudes radially outward from the main body portion; a plurality of terminal pins that protrude from radially outer side surfaces of the terminal block, respectively, and around which the coil wire drawn out from the main body is wound; and a circuit board supported by the terminal block so that the terminal pins can pass through the circuit board and connected to the plurality of terminal pins, wherein first protrusions are provided on both ends of the outer surface in the radial direction on the outer side of the plurality of terminal pins in a direction orthogonal to the axial direction, the first protrusions are formed over the entire axial range of the outer surface in the radial direction, and the circuit board is supported by the first protrusions and is raised from the root portions of the terminal pins.
According to the above configuration, since the circuit board is supported by the first protrusions provided on the outer side surface in the radial direction in the direction orthogonal to the axial direction on both end sides outside the plurality of terminal pins, the circuit board is less likely to be inclined and can be supported in a balanced manner than when the circuit board is supported by the protrusions provided on the central portion of the outer side surface in the radial direction. Further, by forming the first protrusions over the entire axial range of the radially outer side surface, the area of the first protrusions supporting the circuit board is increased, so that the circuit board is less likely to be inclined, and the strength of the terminal block in the axial direction can be increased by the first protrusions, so that the terminal block is less likely to be deformed by a force applied in the axial direction.
Furthermore, the utility model discloses a bobbin assembly of second aspect is on the basis of the bobbin assembly of the first aspect, characterized by, the bobbin includes: a first flange portion that protrudes radially outward from one end side in an axial direction of the main body portion; and a second flange portion that protrudes radially outward from the other end side in the axial direction of the body portion, wherein the axial dimension of the first flange portion is larger than the axial dimension of the second flange portion, and the terminal block is formed on the outer peripheral side of the first flange portion.
According to the above configuration, by forming the terminal block in the first flange portion having a larger axial dimension than the second flange portion, the ability of the terminal block to receive an axial urging force can be further increased, and the following can be avoided: the terminal block is deformed due to axial stress, and thus the terminal pin is driven to move and fall down.
In addition, a third aspect of the present invention is the bobbin assembly according to the first aspect of the present invention, wherein a first inclined surface extending in an axial direction is formed at an edge of the first protrusion near the terminal pin, and the first inclined surface extends obliquely from the first protrusion side toward the terminal pin side.
According to the above configuration, by forming the first inclined surface extending in the axial direction on the edge of the first protrusion close to the terminal pin, the first inclined surface extending obliquely from the first protrusion side toward the terminal pin side, the gap between the first protrusion and the terminal pin can be increased to avoid interference of the coil wire with the first protrusion when the coil wire is wound around the terminal pin. This improves the operability of the wound coil wire.
In addition, the bobbin assembly according to a fourth aspect of the present invention is the bobbin assembly according to the first aspect of the present invention, wherein a plurality of second protrusions are provided between the terminal pins to support the circuit board on the radial outer side surface.
According to the above configuration, since the second protrusion for supporting the circuit board is provided between the plurality of terminal pins, the circuit board can be supported at a plurality of positions in the direction orthogonal to the axial direction by the first protrusion located outside the plurality of terminal pins and the second protrusion located between the plurality of terminal pins. Thus, the circuit board can be more uniformly supported, and the circuit board can be effectively prevented from being inclined.
In addition, according to a fifth aspect of the present invention, in the bobbin assembly according to the fourth aspect of the present invention, the second protrusion is formed over an entire axial range of the radially outer side surface.
According to the above configuration, by forming the second projection over the entire axial range of the radially outer surface of the terminal block, the support area for the circuit board is increased, and the circuit board is less likely to be inclined.
In addition, a bobbin assembly according to a sixth aspect of the present invention is the bobbin assembly according to the first aspect of the present invention, wherein an inclined surface is provided on an axial end side of the terminal block corresponding to a portion of the coil wire drawn out from the main body portion toward the terminal pin, and the inclined surface extends obliquely toward the radial inner side from the radial outer side surface.
According to the above configuration, the inclined surface is provided on one axial side of the terminal block corresponding to the portion of the coil wire drawn out from the main body toward the terminal pin, and the inclined surface extends obliquely inward in the radial direction from the radially outer surface, whereby the coil wire can be guided when the coil wire is drawn out from the main body toward the terminal pin. This makes the winding operation easier.
In addition, according to a seventh aspect of the present invention, in addition to any one of the bobbin assemblies according to the first to sixth aspects of the present invention, the bobbin includes a first flange portion that protrudes outward in a radial direction from one end side in an axial direction of the main body portion, the terminal block is formed on an outer peripheral side of the first flange portion, and an axial dimension of the terminal block is larger than an axial dimension of the first flange portion.
According to the above configuration, by making the axial dimension of the terminal block larger than the axial dimension of the first flange portion, the ability of the terminal block to receive axial force can be further enhanced, and the following can be avoided: the terminal block is deformed by the axial force, and the terminal pin is moved and falls down.
Further, the bobbin assembly according to an eighth aspect of the present invention is the bobbin assembly according to any one of the first to sixth aspects of the present invention, wherein the radial outer side surface has an axial dimension larger than an axial dimension of the terminal pin.
According to the above configuration, the strength of the terminal block for supporting the terminal pin can be increased, and the difference in the direction of the strength of the terminal pin can be reduced.
Furthermore, a ninth aspect of the present invention provides a motor, characterized by comprising: any one of the bobbin assemblies of the first to eighth aspects.
In addition, a motor according to a tenth aspect of the present invention is the motor according to the ninth aspect, wherein the bobbin assemblies are provided in a pair in an axial direction, and the terminal blocks of the pair of bobbin assemblies are adjacent to each other with a gap therebetween.
According to the above structure, a pair is provided by arranging any one of the bobbin assemblies in the first to eighth aspects in the axial direction, and the terminal blocks of the pair of bobbin assemblies are made adjacent to each other with a gap therebetween. Thereby, the following can be avoided: when the stator cores are in contact with each other, if the terminal blocks are also in contact with each other, the position of the stator core may be shifted due to manufacturing tolerances.
Drawings
Fig. 1 is a side sectional view showing the overall structure of a motor including a bobbin assembly according to the present embodiment.
Fig. 2 is a perspective view showing the overall structure of a motor including the bobbin assembly of the present embodiment.
Fig. 3 is a perspective view showing a schematic structure of a bobbin assembly in which a coil wire is not wound according to the present embodiment.
(symbol description)
M motor
1 case 10 groove
2 stator core
3 rotating shaft
4 bobbin
41 body part
42 first flange part
43 second flange part
44 terminal block
441 first projection
441a first inclined surface
442 second inclined surface
L coil wire
5 terminal pins.
Detailed Description
Hereinafter, embodiments of a bobbin assembly and a motor including the same according to embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a side sectional view showing the overall structure of a motor including a bobbin assembly according to the present embodiment. Fig. 2 is a perspective view showing the overall structure of a motor including the bobbin assembly of the present embodiment. Fig. 3 is a perspective view showing a schematic structure of a bobbin assembly in which a coil wire is not wound according to the present embodiment.
Hereinafter, for convenience of explanation, the axial direction of the motor is X, one end is X1, the other end is X2, one of the directions orthogonal to the axial direction X is Y, one end is Y1, the other end is Y2, the directions orthogonal to X, Y are Z, one end is Z1, and the other end is Z2.
(integral Structure of Motor)
Fig. 1 illustrates a side sectional view of the motor taken along the XZ plane. As shown in fig. 1, the motor M includes: a casing 1, the casing 1 being substantially cylindrical, and having covers provided at both ends in the X direction; two bobbins 4, the two bobbins 4 being arranged to overlap in the X direction and housed inside the case 1; stator cores 2, the two stator cores 2 being mounted on the inner circumferential side of the bobbin 4 such that pole teeth are arranged in the circumferential direction; and a rotor having a rotating shaft 3 and a magnet fixed to an outer peripheral side of the rotating shaft 3, the rotating shaft 3 extending in the X direction.
As shown in fig. 1, the housing 1 is divided into substantially two parts (a first part and a second part) in the X direction, the first part and the second part are arranged in the X direction so as to be in contact with each other, and correspondingly, the stator cores 2 are arranged in the X direction so as to be in contact with each other in the housing 1.
As shown in fig. 2, in the motor M configured as described above, the recess 10 is formed in the substantially central portion of the housing 1 in the X direction, the recess 10 is substantially rectangular, and the terminal blocks 44 of the two bobbins 4 abut in the X direction and protrude from the recess 10. The groove 10 is provided larger than the two terminal blocks 44 arranged side by side.
(bobbin assembly)
Hereinafter, a bobbin assembly including the bobbin 4, the terminal pin 5, the coil wire L, and a circuit board (not shown) will be described in detail with reference to fig. 3.
The bobbin assembly includes a bobbin 4, two terminal pins 5 and a circuit board.
In fig. 1, two bobbins 4 are arranged to overlap in the X direction so that terminal blocks 44 abut each other. Only one bobbin 4 on the X1 side of the two bobbins 4 is illustrated in fig. 3.
As shown in fig. 3, the bobbin 4 includes: a body portion 41 having a cylindrical shape extending in the X direction, the body portion 41 being wound with a coil wire L (see fig. 2); a first flange portion 42, the first flange portion 42 protruding radially outward from the body portion 41 on the X2 side of the body portion 41; a second flange portion 43, the second flange portion 43 protruding radially outward from the body portion 41 on the X1 side of the body portion 41; and a terminal block 44 that protrudes radially outward from the first flange 42, the terminal block 44 being provided with a terminal pin 5.
In the present embodiment, the first flange portion 42 and the second flange portion 43 are both formed integrally with the main body portion 41, and the terminal block 44 is formed integrally with the first flange portion 42. The dimension in the X direction of the first flange 42 is larger than the dimension in the X direction of the second flange 43, and the dimension in the X direction of the terminal block 44 is larger than the dimension in the X direction of the first flange 42.
In the case where the bobbins 4 are arranged in the X direction, the terminal blocks 44 of the bobbins 4 are arranged with a gap in the X direction. Thereby, the following can be avoided: when the stator cores 2 abut against each other, if the terminal blocks 44 also abut against each other, there is a possibility that the position of the stator core 2 may be shifted due to manufacturing tolerances.
Accordingly, by further increasing the dimension of terminal block 44 in the X direction in addition to increasing the dimension of first flange portion 42 in the X direction, the ability of terminal block 44 to receive a biasing force in the X direction (i.e., in the axial direction) can be increased, and thus, the following can be avoided: when the terminal block 44 is biased in the X direction, the terminal pin 5 is moved and falls down toward the main body 41 by being deformed by the force.
As shown in fig. 3, a radially outer surface is formed on the Z1 side of the terminal block 44, two terminal pins 5 arranged in the Y direction are formed on the radially outer surface, and the dimension of the radially outer surface in the X direction is larger than the dimension of the terminal pins 5 in the X direction. First protrusions 441 protruding toward Z1 are formed on the radially outer surface of the terminal block 44 on both sides of the two terminal pins 5 in the Y direction. The two first protrusions 441 are formed in an elongated shape over the entire range of the terminal block 44 in the X direction, and first inclined surfaces 441a are formed on the edges of the first protrusions 441 on the side closer to the terminal pins 5, with the first inclined surfaces 441a on the Y2 side being inclined from the Y2 side toward the Y1 side toward the Z2 side, and the first inclined surfaces 441a on the Y1 side being inclined from the Y1 side toward the Y2 side toward the Z2 side.
According to the above configuration, by forming the radially outer side surface of the terminal block 44 to have a dimension in the X direction larger than the dimension in the X direction of the terminal pin 5, the support strength of the terminal block 44 to the terminal pin 5 can be increased, and even if the terminal block 44 is biased in the X direction, the terminal block 44 is not deformed, and the terminal pin 5 does not move and the main body portion 41 falls down.
By forming the first protrusions 441 on both sides of the two terminal pins 5 in the Y direction and forming the two protrusions 441 over the entire range of the terminal block 44 in the X direction, the circuit board can be supported over the entire range of the terminal block 44 in the X direction when the circuit board is mounted on the terminal block 44. This increases the area of the terminal block 44 supporting the circuit board, and the circuit board is less likely to be inclined.
In the bobbin 4 configured as described above, the first inclined surfaces 441a are formed on the edges of the two first protrusions 441 on the side closer to the terminal pin 5, and therefore, when the coil wire L is wound around the terminal pin 5, the gap between the terminal pin 5 and the first protrusions 441 increases, and the space for accommodating the coil wire L increases. Thereby, it is possible to avoid the interference of the coil line L with the edge of the first protrusion 441 and the interference with the winding operation of the coil line L.
As shown in fig. 1, the second inclined surface 442 is provided on the X1 side of the radially outer surface of the terminal block 44 located on the X1 side, and the second inclined surface 442 is provided on the X2 side of the radially outer surface of the terminal block 44 located on the X2 side.
According to the above configuration, by providing the second inclined surface 442 on the radially outer surface of the terminal block 44, the winding of the coil wire L can be guided when the coil wire L is wound around the terminal pin 5, and the coil wire L can be more easily wound around the terminal pin 5.
Further, although not shown, the circuit board is formed with a plurality of through holes (not shown) corresponding to the terminal pins 5, and the plurality of terminal pins 5 are supported by the first projection 441 so as to penetrate the plurality of through holes, and are floated from the root portions of the terminal pins 5.
(effects of the utility model)
Since the circuit board is supported by the first protrusions 441 provided on both end sides of the radial outer surface of the terminal block 44 in the Y direction orthogonal to the X direction (i.e., the axial direction), the circuit board is less likely to be inclined and can be supported in a balanced manner than when the circuit board is supported by a protrusion provided at the center of the radial outer surface. Further, by forming the first projection 441 over the entire axial range of the radially outer side surface, the area of the first projection 441 supporting the circuit board is increased, so that the circuit board is less likely to be inclined, and the strength of the terminal block 44 in the axial direction is increased by the first projection 441, so that the terminal block 44 is less likely to be deformed by a force applied in the axial direction.
(modification example)
A modification of the above embodiment will be described below.
In the above embodiment, as shown in fig. 3, the two first protrusions 441 are formed only on both sides in the Y direction of the radially outer surface of the terminal block 44, but the present invention is not limited to this, and a second protrusion (not shown) may be further formed between the two terminal pins 5.
In this modification, since the other arrangements except for the second projection are the same as those of the above-described embodiment, detailed description thereof is omitted.
As described above, three protrusions in total, two first protrusions 441 and one second protrusion, are formed in the Y direction on the outer surface of the terminal block 44 in the radial direction. This makes it possible to more uniformly support the circuit board by the terminal block 44 when the circuit board is mounted on the terminal block 44, and to more effectively prevent the circuit board from being inclined.
Although the embodiment and the modification of the present invention have been described above, the elements of the embodiment and the modification may be used in combination to obtain the technical means of the present invention without departing from the spirit of the present invention.
In the above-described embodiment and the modifications thereof, the first flange portion and the second flange portion are both formed integrally with the body portion of the bobbin, but are not limited thereto, and may be formed separately.
In the above-described embodiment and the modifications thereof, two terminal pins and two first protrusions are formed, but the number is not limited thereto, and may be other numbers.
In the above-described embodiment and the modifications thereof, the bobbin assemblies are attached to the substantially central portion of the housing of the motor in the X direction, but the bobbin assemblies are not limited thereto, and may be formed at both ends of the housing in the X direction.
In the above-described embodiment and the modifications thereof, the terminal block 44 and the terminal block 44 are arranged in the X direction with a gap therebetween, but the present invention is not limited thereto, and both may be in direct contact.
Claims (10)
1. A bobbin assembly for a motor, comprising: a bobbin including a main body portion that is cylindrical and extends in an axial direction and around which a coil wire is wound, and a terminal block that protrudes radially outward from the main body portion; a plurality of terminal pins that protrude from radially outer side surfaces of the terminal block, respectively, and around which the coil wire drawn out from the main body is wound; and a circuit board which is supported by the terminal block so that the terminal pins can pass through the circuit board and is connected to the plurality of terminal pins,
first protrusions are provided on both end sides of the radially outer surface on the outer side of the plurality of terminal pins in a direction orthogonal to the axial direction,
the first projection is formed over the entire axial range of the radially outer side surface,
the circuit board is supported by the first projection and floats with respect to the root of the terminal pin.
2. The bobbin assembly of claim 1 wherein,
the bobbin includes:
a first flange portion that protrudes radially outward from one end side in an axial direction of the main body portion; and
a second flange portion projecting radially outward from the other end side in the axial direction of the body portion,
the axial dimension of the first flange portion is greater than the axial dimension of the second flange portion,
the terminal block is formed on an outer peripheral side of the first flange portion.
3. The bobbin assembly of claim 1 wherein,
a first inclined surface extending in the axial direction is formed on an edge of the first protrusion near the terminal pin, and the first inclined surface extends obliquely from the first protrusion side toward the terminal pin side.
4. The bobbin assembly of claim 1 wherein,
a second protrusion for supporting the circuit board is provided between the plurality of terminal pins on the radially outer side surface.
5. The bobbin assembly of claim 4,
the second protrusion is formed over the entire axial range of the radially outer side surface.
6. The bobbin assembly of claim 1 wherein,
a second inclined surface is provided on one axial end side of the terminal block corresponding to a portion of the coil wire drawn out from the main body portion toward the terminal pin,
the second inclined surface extends obliquely from the radially outer side surface toward a radially inner side.
7. The bobbin assembly according to any one of claims 1 to 6,
the bobbin includes a first flange portion,
the first flange portion protrudes radially outward from one end side in the axial direction of the body portion,
the terminal block is formed on an outer peripheral side of the first flange portion,
the terminal block has an axial dimension larger than an axial dimension of the first flange portion.
8. The bobbin assembly according to any one of claims 1 to 6,
the radial outer side surface has an axial dimension larger than an axial dimension of the terminal pin.
9. A motor, comprising:
the bobbin assembly of any one of claims 1 to 8.
10. The motor of claim 9,
the bobbin assemblies are arranged in a pair along the axial direction,
the terminal blocks of a pair of the bobbin assemblies are adjacent with a gap therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021749253.6U CN212676987U (en) | 2020-08-20 | 2020-08-20 | Bobbin assembly and motor including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021749253.6U CN212676987U (en) | 2020-08-20 | 2020-08-20 | Bobbin assembly and motor including the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212676987U true CN212676987U (en) | 2021-03-09 |
Family
ID=74819994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021749253.6U Active CN212676987U (en) | 2020-08-20 | 2020-08-20 | Bobbin assembly and motor including the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212676987U (en) |
-
2020
- 2020-08-20 CN CN202021749253.6U patent/CN212676987U/en active Active
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