JP4394227B2 - Motor stator assembly device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stator assembling apparatus for a motor capable of assembling a stator at a predetermined position on a case by aligning an upper jig with a lower jig.
[0002]
[Prior art]
FIG. 7 is a perspective view of a stator and case of a conventional motor. A stator assembly 100 houses a stator 102 in a case 101.
The case 101 is a substantially cylindrical block, and forms an inner cylinder portion 101a that accommodates the core 104. In order to accommodate the core 104 in a predetermined phase in the inner cylinder portion 101a, the protruding portion 103c of the laminated plate 103 is formed. ... (... indicates a plurality. The same applies hereinafter) formed with a concave portion 101b for accommodating the convex portion 104a of the core 104.
[0003]
The stator 102 is formed by winding a plurality of coils 105... Around a core 104 in which a plurality of laminate plates 103... Are stacked. Is formed with a bobbin portion 103b for winding... And a projection 103c for insertion into the case 101 at a predetermined position on the disc 103a. The coil 105 is a lead wire 105a for supplying power. Is provided. Next, problems that occur when the stator 102 is housed in the case 101 will be described.
[0004]
[Problems to be solved by the invention]
FIG. 8 is an explanatory diagram when assembling a stator and a case of a conventional motor. When the width dimension of the protrusion 103c of the laminated plate 103 is A, the width dimension of the protrusion 104a of the core 104 is B. In addition, since the core 104 is a member in which the laminated plates 103 are stacked, the width dimension B includes many variations. Further, if it is attempted to reduce the variation in the width dimension of the convex portion 104a of the core 104, the cost increases. On the other hand, when the width dimension of the concave portion 101b of the case 101 is C, the width dimension C must be set to a dimension commensurate with the width dimension B including many variations. For example, when the width dimension B is small, the case The positioning of the stator 102 with respect to 101 becomes inaccurate, and the stator 102 cannot be assembled to the case 101 with high accuracy.
The case 101 is a substantially cylindrical block, and the process of forming the concave portion 101b in the inner cylinder portion 101a that houses the core 104 is extremely difficult and expensive.
[0005]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a motor stator assembling apparatus that can accurately assemble a stator to a case and can eliminate difficult processing of the case by using the assembling apparatus. .
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a motor stator assembling apparatus according to claim 1 sets a cylindrical case on a lower jig, sets a cylindrical stator on an upper jig, and places an upper jig on a lower jig. It is a device that can assemble the stator at a predetermined position to the case, and the lower jig is positioned in the radial direction of the case by fitting one end of the case to the base on which the case is placed Alignment with the upper side jig by standing on the side of the case so as not to interfere with the case, the radial side positioning block for positioning, the rotation side positioning pin for positioning in the rotation direction of the case by fitting the case The upper jig is placed in a cylinder fitted to the inner peripheral surface of the stator along a lead wire extending from the stator so that the position of the stator in the rotational direction is reduced. And a stopper mechanism for preventing the stator fitted in the cylinder from falling, and a rotation-side positioning arm for positioning the upper jig in the rotational direction with respect to the lower jig by fitting to the guide shaft. all SANYO equipped, stopper mechanism, and characterized in that it consists a shaft passed through the cylinder, the stopper piece tip was hiding at the bottom of the cylinder protrudes by turning the shaft is attached to the lower end of the shaft To do.
[0007]
Position the lead wire extending from the stator on the mark pin to determine the position in the rotation direction of the stator, set the stator on the cylinder, prevent the stator from falling with the stopper mechanism, and complete the setting of the stator on the upper jig . Next, the case is positioned in the radial direction by fitting one end of the case to the radial side positioning block, and the lower jig is positioned in the rotational direction by fitting the case to the rotation side positioning pin. Complete the set of cases on the base. The stator is assembled to the case at a predetermined position by aligning the rotation side positioning arm of the upper jig with the guide shaft of the lower jig and aligning the upper jig with the lower jig.
[0008]
For example, when a protrusion is provided on a laminated plate constituting the core of the stator, and a concave portion for fitting the protrusion is provided in the case, and the stator is assembled to the case, the width of the protrusion overlaps the laminated plate. Since there are many variations, the stator cannot be assembled accurately in the case. A stator assembly apparatus for a motor that can assemble a stator in a predetermined position on a case by setting a cylindrical case on a lower jig, setting a stator on an upper jig, and aligning the upper jig with a lower jig. By using it, the assembly accuracy of the positional accuracy of the stator with respect to the case is improved. Further, by using the motor stator assembly device, for example, difficult processing for forming a recess in the case is omitted, and the manufacturing cost of the motor is reduced.
[0010]
The stator is set in the cylinder of the upper jig, and the stator is supported so that the tip of the stopper piece protrudes from the bottom of the cylinder by turning the shaft.
The stopper mechanism is composed of a shaft that penetrates the cylinder and a stopper piece that is attached to the lower end of the shaft and that protrudes from the tip hidden behind the cylinder by turning the shaft. Therefore, the assembly of the motor stator assembly device is improved.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is an exploded perspective view of a motor assembled by a motor stator assembling apparatus according to the present invention.
The motor 10 houses a stator 12 in a substantially cylindrical case 11, and a rotor 13 is rotatably housed in the stator 12, and is covered with an upper cover 14 from the upper part of the case 11 and covered with a lower cover 15 from the lower part of the case 11. It is a thing. 16... Are mounting screws for the upper cover 14, and 17... Are mounting screws for the lower cover 15.
[0012]
The case 11 is a cylindrical block formed by cutting aluminum or the like. The case 11 is formed with a fitting portion 11b of the stator 12 inside the main body portion 11a, and a motor mounting hole 11c is formed outside the main body portion 11a. It is a thing.
The stator 12 forms a core 22 by combining a plurality of laminated plates 21..., A plurality of coils 23... Are wound around the core 22, and lead wires 24. · · · Is drawn.
[0013]
In the rotor 13, a magnet 26 is attached to the rotor yoke 25, and a shaft 28 is attached to the rotor yoke 25 via a boss 27.
The upper cover 14 is formed with a fitting portion 14b fitted to the case 11 in the main body portion 14a, the bearing 14c of the shaft 28 is attached to the main body portion 14a, and the fitting hole 14d of the mounting screw 16. Is formed.
The lower cover 15 is formed with a fitting portion 15b fitted to the case 11 in the main body portion 15a, a shaft bearing 15c is attached to the main body portion 15a, and a fitting hole 15d of a mounting screw 17 is formed in the main body portion 15a. It is a thing.
[0014]
The stator 12 is fixed to the case 11 by shrink fitting, that is, the case 11 is heated to a predetermined temperature (for example, 180 to 200 ° C.), and the fitting portion 11b of the case 11 is engaged. In this state, the stator 12 is accommodated in a state in which the diameter is increased.
[0015]
FIG. 2 is an exploded perspective view of the motor stator assembly apparatus according to the present invention. The motor stator assembly apparatus 30 (hereinafter abbreviated as “stator assembly apparatus 30”) has the case 11 shown in FIG. And a lower jig 40 placed on the upper jig 50 and an upper jig 50 for supporting the stator 12 at a predetermined position.
[0016]
The lower jig 40 has a radial positioning block 42 for positioning the case 11 in the radial direction shown in FIG. 1 attached to the base 41, and a center pin 43 to be fitted to the upper jig 50 stands on the radial positioning block 42. 11 is attached to the base 41, the guide shaft 45 fitted to the upper jig 50 is set up on the base 41, and the support block 46 that supports the case 11 at a predetermined height is provided. The base 41 is slidably attached.
[0017]
Since the lower jig 40 has the center pin 43 standing on the radial side positioning block 42, the upper jig 50 can be centered by fitting it into a center hole 57 of the upper jig 50 described later. The stator 12 can be fitted to the case 11 shown while being centered, and the stator 12 can be stored in the case 11.
[0018]
Since the lower jig 40 has the support block 46 attached to the base 41, the stator 12 can be accommodated with the lower end of the case 11 shown in FIG. Therefore, it is possible to deal with a motor that needs to be pulled out, and the versatility of the stator assembling apparatus 30 can be expanded. Further, in this case, since the support block 46 is slidably attached to the base 41, it is possible to cope with the assembly of the stator having cases having different diameters.
[0019]
The upper jig 50 is provided with a mark 52 for determining the position of the stator 12 in the rotational direction shown in FIG. 1 attached to the cylinder 51, and a pair of stopper mechanisms 53A and 53B for preventing the stator 12 from dropping. A rotation-side positioning arm 54 for positioning the upper jig 50 in the rotation direction with respect to the jig 40 is attached to the cylinder 51, and a handle 55 for moving the upper jig 50 is attached to the cylinder 51.
The cylinder 51 is formed with a center hole 57 to be fitted to the center pin 43 and through holes 58 and 58 for attaching the stopper mechanisms 53A and 53B. The rotation side positioning arm 54 is fitted to the guide shaft 45 at the tip. The groove 54a to be formed is formed. Reference numeral 51 a denotes the bottom of the cylinder 51.
[0020]
FIG. 3 is a plan view of the motor stator assembling apparatus according to the present invention. The stopper mechanism 53A is attached to the shaft 61 passed through the through hole 58 (see FIG. 2) of the cylinder 51 and the lower end of the shaft 61. By rotating the shaft 61, the stopper piece 62 protruding from the tip hidden behind the bottom 51a of the cylinder 51, the operation rod 63 attached to the upper end of the shaft 61, and the rotation range of the shaft 61 attached in the middle of the shaft 61 are regulated. It consists of a fan-shaped plate 64.
The stopper mechanism 53B is a mechanism having the same configuration as the stopper mechanism 53A, and is symmetrical to the stopper mechanism 53A with respect to the center line L of the rotation side positioning arm 54, and detailed description thereof is omitted.
[0021]
The stopper mechanism 53A includes a shaft 61 that penetrates the cylinder 51, and a stopper piece 62 that is attached to the lower end of the shaft 61 and rotates from the bottom 51a of the cylinder 51 by turning the shaft 61. 12 can be easily supported by the cylinder 51 or can be easily released from the cylinder 51, so that the operability of the stator assembling apparatus 30 can be improved and the assemblability of the stator 12 can be improved.
[0022]
4 is a cross-sectional view taken along line 4-4 of FIG. 3 and shows a front cross-sectional view of the stator assembling apparatus. The stator assembling apparatus 30 sets the cylindrical case 11 on the lower jig 40 and the upper jig 50. A device in which the stator 12 can be assembled to the case 11 at a predetermined position by setting the cylindrical stator 12 and aligning the upper jig 50 with the lower jig 40, and the lower jig 40 is in an upright state. A positioning block 42 for positioning the case 11 in the radial direction by fitting one end of the case 11 to the base 41 on which the case 11 is placed, and positioning in the rotation direction of the case 11 by fitting the case 11 And a guide shaft 45 (see FIG. 2) for aligning with the upper jig 50 by standing on the side of the case 11 so as not to interfere with the case 11. The upper jig 50 is a mark for determining the position of the stator 12 in the rotational direction by being placed along the lead wires 24 extending from the stator 12 to the cylinder 51 fitted to the inner peripheral surface of the stator 12. The upper jig 50 rotates with respect to the lower jig 40 by fitting to the guide pin 45, the stopper mechanisms 53A and 53B for preventing the stator 12 fitted to the cylinder 51 from dropping, and the guide shaft 45 (see FIG. 2). The rotation side positioning arm 54 for positioning in the direction is provided.
[0023]
Next, the operation of the stator assembling apparatus described above will be described.
FIGS. 5A to 5C are operation explanatory views (first half) of the motor stator assembling apparatus according to the present invention.
In (a), the position of the stator 12 in the rotational direction is determined by aligning the lead pins 24... To do.
[0024]
In (b), the operating rods 63, 63 of the stopper mechanisms 53A, 53B are operated, the shafts 61, 61 are rotated as indicated by the arrows (2), (2), and the shafts 61, 61 are rotated to rotate the bottom of the cylinder 51. The tips of the stopper pieces 62 and 62 hidden in 51a are protruded as indicated by arrows (3) and (3), the stopper pieces 62 and 62 prevent the stator 12 from falling, and the stator 12 is set on the upper jig 50. do.
[0025]
In (c), the stator 12 is shrink-fitted into the case 11, that is, a case 11 heated to a predetermined temperature (for example, 180 to 200 ° C.) is prepared, and the case 11 is calibrated. The case 11 is positioned in the radial direction by fitting one end of the case 11 to the side positioning block 42, and the case 11 is positioned in the rotating direction by fitting the case 11 to the rotation side positioning pin 44. The case 11 is set on the base 41 of the jig 40 as indicated by arrows (4) and (4).
[0026]
FIGS. 6A to 6C are operation explanatory views (second half) of the motor stator assembling apparatus according to the present invention.
In (a), the groove 54a of the rotation side positioning arm 54 of the upper jig 50 is aligned with the guide shaft 45 of the lower jig 40, and the upper jig 50 is aligned with the lower jig 40 as shown by the arrow (5). A stator 12 having a normal temperature is assembled at a predetermined position to the case 11 which has been heated to a temperature of 10 mm and expanded in diameter.
[0027]
In (b), by operating the operating rods 63 and 63 of the stopper mechanisms 53A and 53B (one 53B is not shown), the shafts 61 and 61 are rotated as shown by the arrow (6), and the shafts 61 and 61 are rotated. The tips of the stopper pieces 62, 62 are stored in the bottom 51a of the cylinder 51 as shown by the arrow (7).
[0028]
In (c), the upper jig 50 is lifted as shown by arrow (8), and the setting of the stator 12 to the case 11 is completed. Then, the case 12 is cooled to room temperature, so that the stator 12 is fixed to the case 11. That is, the cylindrical case 11 is set on the lower jig 40, the stator 12 is set on the upper jig 50, and the upper jig 50 is aligned with the lower jig 40, thereby assembling the stator 12 at a predetermined position on the case 11. By using the stator assembly device 30 that can be attached, the assembly accuracy of the stator 12 with respect to the case 11 can be improved.
[0029]
In the embodiment, as shown in FIG. 3, the pair of stopper mechanisms 53A and 53B are provided. However, the present invention is not limited to this, and only one stopper mechanism may be provided.
In FIG. 3, the stopper mechanisms 53A and 53B may be provided with a lock mechanism so that the stopper pieces 62 and 62 are locked.
[0030]
【The invention's effect】
The present invention exhibits the following effects by the above configuration.
In the first aspect of the present invention, for example, when a protrusion is provided on a laminated plate constituting the core of the stator, and a recess is provided in the case for fitting the protrusion, and the stator is assembled to the case, the width dimension of the protrusion is When the laminated plates are stacked, there are many variations, and the stator cannot be assembled to the case with high accuracy. A stator assembly apparatus for a motor that can assemble a stator in a predetermined position on a case by setting a cylindrical case on a lower jig, setting a stator on an upper jig, and aligning the upper jig with a lower jig. By using it, the assembly accuracy of the stator with respect to the case can be improved. As a result, the yield of motor assembly can be improved and the defect rate can be reduced.
Further, by using the motor stator assembly device, for example, it is possible to omit a difficult process of forming a recess in the case, and to reduce the manufacturing cost of the motor. As a result, the cost of the motor can be reduced, the yield of the motor assembly can be improved, and the defect rate can be reduced.
[0031]
The stopper mechanism consists of a shaft that penetrates the cylinder, and a stopper piece that is attached to the lower end of the shaft and that protrudes from the tip hidden behind the cylinder by turning the shaft. The stator is easily supported by the cylinder. Or since it was made easy to open | release from a cylinder, the improvement of the assembly | attachment property of the stator assembly apparatus of a motor can be aimed at.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a motor assembled by a motor stator assembling apparatus according to the present invention. FIG. 2 is an exploded perspective view of a motor stator assembling apparatus according to the present invention. FIG. 4 is a sectional view taken along line 4-4 of FIG. 3. FIG. 5 is an explanatory diagram of the operation of the motor stator assembly device according to the present invention (first half).
FIG. 6 is an operation explanatory view of the motor stator assembly device according to the present invention (second half)
FIG. 7 is a perspective view of a stator and case of a conventional motor. FIG. 8 is an explanatory diagram when assembling the stator and case of a conventional motor.
DESCRIPTION OF SYMBOLS 10 ... Motor, 11 ... Case, 12 ... Stator, 30 ... Stator assembly apparatus, 40 ... Lower jig, 41 ... Base, 42 ... Radial side positioning block, 45 ... Guide shaft, 50 ... Upper jig, 51 ... Cylinder, 51a ... bottom, 52 ... mark pin, 53A, 53B ... stopper mechanism, 54 ... rotation side positioning arm, 58 ... through hole, 61 ... shaft, 62 ... stopper piece.

Claims (1)

A device that can set a cylindrical case on the lower jig, set a cylindrical stator on the upper jig, and align the upper jig with the lower jig to assemble the stator at a predetermined position on the case Because
The lower jig includes a radial side positioning block for positioning the case in the radial direction by fitting one end of the case to a base on which the case in a standing state is placed, and a rotation direction of the case by fitting the case Rotation side positioning pin for positioning in and a guide shaft that aligns with the upper jig by standing on the side of the case so as not to interfere with the case,
The upper jig is a cylinder that fits on the inner peripheral surface of the stator, a marker pin that determines the position in the rotation direction of the stator by following a lead wire extending from the stator, and prevents the stator fitted to the cylinder from falling. a stopper mechanism for state, and are not provided with a rotation-side positioning arm for positioning in the rotational direction of the upper jig relative to the lower jig by fitting the guide shaft,
The stopper mechanism comprises: a shaft that penetrates a cylinder; and a stopper piece that is attached to a lower end of the shaft and that protrudes from a tip that is hidden at the bottom of the cylinder by turning the shaft. .

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