CN211940649U - Motor fixing clamp - Google Patents
Motor fixing clamp Download PDFInfo
- Publication number
- CN211940649U CN211940649U CN202020302336.4U CN202020302336U CN211940649U CN 211940649 U CN211940649 U CN 211940649U CN 202020302336 U CN202020302336 U CN 202020302336U CN 211940649 U CN211940649 U CN 211940649U
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- motor
- positioning hole
- support table
- side positioning
- jig
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Abstract
A motor fixing jig capable of easily and reliably positioning a motor in a radial direction even if a dimension in the axial direction of a flange protruding from one end surface in the axial direction of the motor is small. The utility model discloses an anchor clamps for motor is fixed includes: a base; a protrusion portion protruding upward from the base; a support table which is provided above the base, has a jig-side positioning hole surrounding the protruding portion and a first support body on which the motor is placed with a flange inserted into the jig-side positioning hole, and can be raised and lowered between an upper position at which an upper end of the protruding portion is removed from the motor-side positioning hole of the motor placed on the support table and a lower position at which the upper end of the protruding portion is inserted into the motor-side positioning hole of the motor placed on the support table; and a driving mechanism for lifting the support base, wherein the difference between the radial dimensions of the inner circumferential surface of the motor-side positioning hole and the outer circumferential surface of the protrusion is smaller than the difference between the radial dimensions of the inner circumferential surface of the jig-side positioning hole and the outer circumferential surface of the flange.
Description
Technical Field
The present invention relates to a motor fixing jig, and more particularly to a motor fixing jig for positioning and supporting a motor.
Background
Motors have been used in various vehicles (e.g., automobiles and electric vehicles), daily necessities (e.g., household sweeping robots), production facilities (e.g., winding machines), and the like. The composition and performance requirements of the motor often vary depending on the application scenario. For example, there is a motor of the following structure including: a housing having a substantially cylindrical shape; a stator having a substantially cylindrical shape and housed in the housing; and a rotor that is built in the stator and includes a rotating shaft extending in an axial direction of the stator, a first cover and a second cover that close both ends of the housing in the axial direction are formed on one end side and the other end side of the housing in the axial direction, respectively, an annular flange is formed integrally with the first cover, the flange protrudes from the first cover to the one end side, and the rotating shaft protrudes from the flange to the one end side.
In assembling the motor configured as described above, it is often necessary to position the motor using a jig, and conventionally, it is considered to provide a positioning hole in the jig, which is adapted to a flange of the motor and into which the flange is fitted, to position the motor in the radial direction with respect to the jig. However, when the axial length of the flange of the motor is small, if the difference between the radial dimensions of the positioning hole of the jig and the flange of the motor is set small, it is difficult to fit the flange of the motor into the positioning hole of the jig, and if the difference between the radial dimensions of the positioning hole of the jig and the flange of the motor is set large, it is difficult to accurately position the motor in the radial direction with respect to the jig.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems, and an object of the present invention is to provide a motor fixing device that can easily and reliably position a motor in a radial direction even if a dimension in the axial direction of a flange protruding from an end surface in the axial direction of the motor is small.
In order to achieve the above object, a first aspect of the present invention provides a motor fixing jig for positioning and supporting a motor, the motor having a housing, a shaft, and a flange, the shaft reaching the flange protruding from an end surface of the housing, the flange having a motor-side positioning hole, the motor fixing jig comprising: a base, a protruding portion protruding upward from the base; a support table provided above the base, having a jig-side positioning hole surrounding the protruding portion and a first support body on which a motor is placed with a flange inserted into the jig-side positioning hole, and being capable of being raised and lowered between an upper position at which an upper end of the protruding portion is removed from the motor-side positioning hole of the motor placed on the support table and a lower position at which the upper end of the protruding portion is inserted into the motor-side positioning hole of the motor placed on the support table; and a drive mechanism that moves the support base up and down, wherein a difference in radial dimension between an inner peripheral surface of the motor-side positioning hole and an outer peripheral surface of the protrusion is smaller than a difference in radial dimension between an inner peripheral surface of the jig-side positioning hole and an outer peripheral surface of the flange.
According to the above configuration, the support base has the jig-side positioning hole surrounding the protruding portion and the first support body on which the motor is placed so that the flange is inserted into the jig-side positioning hole, and can be raised and lowered between the upper position at which the upper end of the protruding portion is removed from the motor-side positioning hole of the motor placed on the support base and the lower position at which the upper end of the protruding portion is inserted into the motor-side positioning hole of the motor placed on the support base, and the difference in radial dimension between the inner peripheral surface of the motor-side positioning hole and the outer peripheral surface of the protruding portion is smaller than the difference in radial dimension between the inner peripheral surface of the jig-side positioning hole and the outer peripheral surface of the flange. Accordingly, the motor can be easily roughly positioned in the radial direction with respect to the motor fixing jig by the engagement of the flange of the motor with the jig-side positioning hole at the upper position, and then finely positioned in the radial direction with respect to the motor fixing jig by the engagement of the motor-side positioning hole with the projecting portion at the lower position.
In addition, according to a second aspect of the present invention, in addition to the motor fixing jig of the first aspect, the motor side positioning hole is concentrically provided with the rotary shaft in a manner separated from the rotary shaft, and an upper end portion of the protruding portion is formed in a tubular shape into which the rotary shaft of the motor placed on the support table is inserted.
According to the above configuration, the motor-side positioning hole is provided concentrically with the rotary shaft so as to be separated from the rotary shaft, and the upper end portion of the protruding portion is formed in a tubular shape into which the rotary shaft of the motor mounted on the support base can be inserted. This allows the protrusion to guide the rotating shaft of the motor.
In the motor fixing jig according to the third aspect of the present invention, in addition to the motor fixing jig according to the second aspect, a chamfer is provided at an upper end of the protruding portion so as to extend over an entire outer peripheral edge.
According to the above configuration, the upper end of the protruding portion is chamfered over the entire outer peripheral edge. Thus, the protruding portion can be more easily inserted into the motor-side positioning hole by the chamfering. Furthermore, the chamfer of the upper end of the protrusion helps to guide the motor to be on the same axis as the jig when coarsely positioned.
The motor fixing jig of the fourth aspect of the present invention is the motor fixing jig of the third aspect, wherein the motor has a protrusion protruding from the outer peripheral surface of the housing, the support table has the circumferential positioning portion which is placed from both sides in the circumferential direction and the projection butt of the motor on the support table, the circumferential positioning portion includes: a first positioning portion that abuts the projection of the motor placed on the support table from one side in the circumferential direction; and a second positioning portion that is in contact with the projection of the motor placed on the support table on the other side in the circumferential direction and is movable in the horizontal direction with respect to the first positioning portion.
According to the above configuration, the first positioning portion and the second positioning portion are respectively brought into contact with the projection formed on the housing of the motor from both sides in the circumferential direction, whereby the motor can be positioned in the circumferential direction.
Furthermore, the motor fixing jig according to a fifth aspect of the present invention is characterized in that the driving mechanism includes a cylinder and a spring.
According to the above configuration, the vertical position of the support base can be controlled easily and reliably by lifting the support base by the drive mechanism including the cylinder and the spring.
Drawings
Fig. 1 is a schematic diagram showing an overall configuration of a motor fixing jig according to an embodiment of the present invention.
Fig. 2 is a sectional view showing a structure of a motor fixing jig according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view showing a state where the motor is roughly positioned by the motor fixing jig according to the embodiment of the present invention.
Fig. 4 is a cross-sectional view showing a state where the motor is precisely positioned by the motor fixing jig according to the embodiment of the present invention after the rough positioning shown in fig. 3.
(symbol description)
1, a motor;
10 a shell;
11 a rotating shaft;
12a flange;
121 motor side positioning holes;
122 motor side chamfer;
2a motor fixing jig;
20a base;
21a projection;
211 a protruding portion peripheral wall portion;
212a protrusion central aperture;
212a clamp side chamfer;
22 a support table;
220a first support part;
220a clamp side positioning hole;
220b a first support body;
220c, chamfering the clamp side;
221a second support portion;
221a second support center hole;
221b a second support body;
23 a drive mechanism;
231 cylinders;
232 compression coil spring;
24 circumferential locating portions;
241 a first positioning part;
242 second positioning portion.
Detailed Description
Hereinafter, a specific embodiment of the motor fixing jig of the present invention will be described with reference to fig. 1 to 4. Fig. 1 is a schematic diagram showing an overall configuration of a motor fixing jig according to an embodiment of the present invention. Fig. 2 is a sectional view showing a structure of a motor fixing jig according to an embodiment of the present invention. Fig. 3 is a cross-sectional view showing a state where the motor is roughly positioned by the motor fixing jig according to the embodiment of the present invention. Fig. 4 is a cross-sectional view showing a state where the motor is precisely positioned by the motor fixing jig according to the embodiment of the present invention after the rough positioning shown in fig. 3. In the drawings of the present invention, for convenience of explanation, the short side direction of the base in fig. 1 is defined as the X direction, one side of the X direction is defined as the X1 side, the other side is defined as the X2 side, the long side direction of the base in fig. 1 is defined as the Y direction, one side of the Y direction is defined as the Y1 side, the other side is defined as the Y2 side, the direction orthogonal to the X direction and the Y direction is defined as the Z direction (corresponding to the vertical direction in the present invention), one side of the Z direction is defined as the Z1 side, and the other side is defined as the Z2 side.
The motor used in the present invention is an inner rotor type motor. As shown in fig. 3 and 4, the specific internal structure of the motor is not marked, but the housing 10, the rotary shaft 11, and the flange 12 are marked with a motor-side positioning hole 121 and a motor-side chamfer 122. The motor 1 is, for example, about 1.8kg, and includes: a case 10 having a substantially cylindrical shape and having a protrusion (not shown) formed on an outer circumferential surface thereof; a stator which is built in the housing 10 and includes a stator core in which a plurality of pole teeth protruding radially inward are formed along a circumferential direction and a winding which is wound in a tooth slot formed by the plurality of pole teeth; a rotor which is built in the stator and includes a permanent magnet (not shown) and a rotating shaft 11, the permanent magnet being provided on an outer peripheral surface of the rotating shaft 11; and a first cover and a second cover that cover both end portions of the case from both sides in the axial direction (i.e., Z direction) of the motor 1, respectively.
Further, a flange 12 is provided extending from the first cover body toward the Z2 side, the flange 12 has a motor side positioning hole 121 opened at the center, and a motor side chamfer 122 is formed on the lower end surface of the motor side positioning hole 121 over the entire circumference.
Further, although not shown, a projection is formed on the outer peripheral surface of the housing 10 of the motor 1.
(general structure of Motor fixing clip 2)
The schematic structure of the motor fixing jig 2 will be described below with reference to fig. 1 and 2. As shown in fig. 2, the motor fixing jig 2 includes: a base 20; a protrusion 21, the protrusion 21 being sleeve-shaped and protruding from the base 20 toward Z1 side, including a protrusion peripheral wall portion 211 and a protrusion center hole 212, and a jig-side chamfer 212a (refer to fig. 3) formed at a portion of an upper end face of the protrusion center hole 212 corresponding to the motor-side chamfer 122, the jig-side chamfer 212a being formed to be inclined radially outward from the upper end face of the protrusion center hole 212; a support base 22 provided in an annular shape above the base 20, having a jig-side positioning hole 220a surrounding the protruding portion 21 and a first support body 220b on which the motor 1 is placed with the flange 12 inserted into the jig-side positioning hole 220a, and being capable of being raised and lowered between an upper position at which the upper end of the protruding portion 21 is removed from the motor-side positioning hole 121 of the motor 1 placed on the support base 22 and a lower position at which the upper end of the protruding portion 21 is inserted into the motor-side positioning hole 121 of the motor 1 placed on the support base 22; and a drive mechanism 23, the drive mechanism 23 is positioned between the support table 22 and the base 20, and supports the support table 22 to be able to move up and down.
As shown in fig. 1 and 2, the support base 22 is configured by a first support part 220 and a second support part 221, wherein the first support part 220 and the second support part 221 are both formed in a substantially disk shape, the first support part 220 is formed by a substantially annular first support main body 220b and a jig-side positioning hole 220a surrounded by the first support main body 220b, the second support part 221 is located below the first support part 220, and the second support part 221 is configured by a substantially annular second support main body 221b and a second support center hole 221a surrounded by the second support main body 221 b. As shown in fig. 2, second support body 221b of second support portion 221 includes a large diameter portion having a larger diameter than a small diameter portion formed in this order from Z1 side to Z2 side, and a small diameter portion extending from the large diameter portion toward Z2 side and fitted around its outer periphery with compression coil spring 232 (a part of drive mechanism 23 described below).
Further, as shown in fig. 1, a circumferential positioning portion 24 is provided to protrude from an upper surface of the first support portion 220, and the circumferential positioning portion 24 includes: a first positioning portion 241, the first positioning portion 241 protruding from the upper surface of the support table 22 in a needle shape; and a second positioning portion 242, the second positioning portion 242 including a needle-like front end portion protruding in the circumferential direction and a cylinder (not shown).
When the motor 1 is placed on the support base 22 by a robot or the like, the first positioning portion 241 abuts against the projection on the housing 10 of the motor 1 from one circumferential side, and the distal end portion of the second positioning portion 242 abuts against the projection on the housing 10 of the motor 1 from the other circumferential side. Thereby, the motor 1 is positioned in the circumferential direction.
Further, the drive mechanism 23 includes: an air cylinder 231, the air cylinder 231 is provided with two positions by separating the center of the supporting table 22 (the center of the clamp side positioning hole 220a is consistent with the center of the second supporting center hole 221 a), the Z1 side end of the piston part of the air cylinder 231 is connected with the supporting table 22, and the Z2 side end is connected with the base 20; and a compression coil spring 232, the Z1 end of the compression coil spring 232 being connected to the second support table 221, and the Z2 end being connected to the base 20.
As described above, by providing the driving mechanism 23 including the air cylinder 231 and the compression coil spring 232, it is possible to provide a driving force for rough positioning and fine positioning of the motor 1 on the motor fixing jig 2.
As shown in fig. 3, when roughly positioning the motor 1, the shaft 11 of the motor 1 is inserted into the protrusion center hole 212 of the protrusion 21, the flange 12 is inserted into the jig side positioning hole 220a of the support table 22, and the end surface of the motor 1 on the Z2 side abuts against the upper surface of the support table 22, whereby the flange 12 is restricted within the radial range defined by the jig side positioning hole 220 a. This enables the motor 1 to be roughly positioned in the radial direction by the motor fixing jig 2.
Further, in the above case, as shown in fig. 3, the one-side clearance amount d1 between the outer peripheral surface of the flange 12 and the inner peripheral surface of the jig-side positioning hole 220a is approximately 0.08mm to 0.1 mm.
Further, as shown in fig. 4, when the motor 1 is finely positioned, the cylinder 231 of the drive mechanism 23 is operated, the piston moves downward to move the support base 22 downward (i.e., toward Z2 in fig. 4), and the flange of the motor 1 also moves downward in synchronization with the downward movement and is fitted into the upper end of the projection 21 (i.e., the end on the Z1 side in fig. 4), whereby the upper end of the projection 21 is inserted into the gap between the outer peripheral surface of the rotating shaft 11 of the motor and the inner peripheral surface of the motor-side positioning hole 121 in the center of the flange 12, and at this time, the one-side gap amount d2 between the inner peripheral surface of the motor-side positioning hole 121 of the flange 12 of the motor 1 and the outer peripheral surface of the projection 21 is 0.005mm to 0.020 mm. Thus, the difference in radial dimension between the inner peripheral surface of the motor-side positioning hole 121 and the outer peripheral surface of the protrusion 21 is smaller than the difference in radial dimension between the outer peripheral surface of the flange 12 of the motor 1 and the inner peripheral surface of the jig-side positioning hole 220 a. This enables the motor 1 to be precisely positioned in the radial direction by the motor fixing jig 2.
Thus, the motor fixing jig 2 can easily and reliably position the motor 1 in the radial direction even if the dimension in the axial direction of the flange 12 protruding from the one end surface in the axial direction of the motor 1 is small.
(Process of coarse positioning and fine positioning of Motor 1)
The rough positioning and the fine positioning of the motor 1 will be roughly described below. After the motor 1 is preliminarily assembled (that is, the stator and the rotor are assembled in the housing), the robot or the like conveys the motor 1 to a predetermined position above the motor fixing jig 2 and places the motor 1 on the support table 22 of the motor fixing jig 2, whereby the motor 1 is suspended by its own weight from the motor fixing jig 2 supported by the compression coil spring 232 and held at the upper position, and the motor 1 is roughly positioned in the radial direction and is substantially on the same axis as the protrusion 21 of the motor fixing jig 2 by the restriction of the jig side positioning 220a of the support table 22, and then the driving mechanism 23 starts to operate, the pressure in the chamber of the cylinder 231 becomes small, the piston moves downward to move the support table 22 in synchronization with the downward movement, and at the same time, the motor 1 placed on the support table 22 also moves downward, the upper end portion of the protrusion 21 is fitted in the gap between the outer peripheral surface of the rotating shaft 11 and the inner surface of the motor side positioning hole 121, the motor 1 is precisely positioned in the motor fixing jig 2 in the radial direction.
Although the embodiments of the present invention have been described above, the elements of the embodiments can be used in combination to obtain the technical aspects of the present invention without departing from the spirit of the present invention, in addition to the technical aspects described in the embodiments.
In the above embodiment, the motor-side positioning hole is formed in the center of the motor flange, but the present invention is not limited thereto, and may be formed so as not to be concentric with the flange.
In the above embodiment, the support base is formed of two parts, i.e., the disk-shaped first support part and the disk-shaped second support part, but the present invention is not limited thereto, and may be formed of one support part.
In the above embodiment, both portions of the support base are formed in a disk shape, but the present invention is not limited thereto, and may be formed in a quadrangular shape or other shapes.
Claims (5)
1. A motor fixing jig for positioning and supporting a motor, the motor including a housing, a rotating shaft, and a flange, the rotating shaft and the flange protruding from one end surface of the housing, the flange including a motor-side positioning hole, the motor fixing jig comprising:
a base seat is arranged on the base seat,
a protrusion protruding upward from the base;
a support table provided above the base, having a jig-side positioning hole surrounding the protruding portion and a first support body on which a motor is placed with a flange inserted into the jig-side positioning hole, and being capable of being raised and lowered between an upper position at which an upper end of the protruding portion is removed from the motor-side positioning hole of the motor placed on the support table and a lower position at which the upper end of the protruding portion is inserted into the motor-side positioning hole of the motor placed on the support table; and
a drive mechanism for lifting and lowering the support table,
the difference in radial dimension between the inner peripheral surface of the motor-side positioning hole and the outer peripheral surface of the protruding portion is smaller than the difference in radial dimension between the inner peripheral surface of the jig-side positioning hole and the outer peripheral surface of the flange.
2. The motor fixing clip according to claim 1,
the motor side positioning hole is concentrically arranged with the rotating shaft in a manner of separating from the rotating shaft,
the upper end of the protruding part is in a cylindrical shape into which a rotating shaft of the motor placed on the support table can be inserted.
3. The motor fixing clip according to claim 2,
the upper end of the protruding portion is provided with a chamfer over the entire outer periphery.
4. The motor fixing clip according to claim 3,
the motor has a protrusion protruding from an outer circumferential surface of the housing,
the support table has a circumferential positioning portion that abuts against the projection of the motor placed on the support table from both sides in the circumferential direction,
the circumferential positioning portion includes:
a first positioning portion that abuts the projection of the motor placed on the support table from one side in the circumferential direction; and
and a second positioning portion that is in contact with the projection of the motor placed on the support table on the other side in the circumferential direction and is movable in the horizontal direction with respect to the first positioning portion.
5. The motor fixing clip according to claim 4,
the driving mechanism comprises a cylinder and a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020302336.4U CN211940649U (en) | 2020-03-12 | 2020-03-12 | Motor fixing clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020302336.4U CN211940649U (en) | 2020-03-12 | 2020-03-12 | Motor fixing clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211940649U true CN211940649U (en) | 2020-11-17 |
Family
ID=73193895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020302336.4U Active CN211940649U (en) | 2020-03-12 | 2020-03-12 | Motor fixing clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211940649U (en) |
-
2020
- 2020-03-12 CN CN202020302336.4U patent/CN211940649U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 600, Changsheng Road, Pinghu Economic Development Zone, Jiaxing City, Zhejiang Province, 314200 Patentee after: NIDECO Intelligent Equipment (Zhejiang) Co.,Ltd. Address before: No. 600, Changsheng Road, Pinghu Economic Development Zone, Jiaxing City, Zhejiang Province, 314200 Patentee before: NIDEC MACHINERY (ZHEJIANG) Corp. |
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| CP01 | Change in the name or title of a patent holder |