JP3174672U - Motor coupling device - Google Patents

Abstract

A motor coupling device that is easy to assemble is provided.
A motor coupling device includes a motor, a first transmission component 41, a second transmission component 42, and a machine seat 200, and the motor can be assembled directly on the side of the machine seat 200. A first accommodation space for fixing the first transmission component 41 is provided inside the large-diameter portion 22 formed at the first end of the drive shaft 20 of the motor. A second transmission component 42 is fixed on the axis 201 on the side of the machine seat 200. The second transmission component 42 is coaxially connected to the first transmission component 41 provided on the drive shaft 20 and transmits. Thereby, the drive shaft 20 of the motor, the first transmission component 41, the shaft center 201 of the machine seat 200, and the second transmission component 42 provided on the shaft center 201 are coaxially connected to the large portion of the drive shaft 20. The motor can directly drive the axis 201 of the machine seat 200 by being assembled in the diameter portion 22.
[Selection] Figure 6

Description

  The present invention relates to a motor coupling device, and more particularly to an assembly structure between a motor and a machine seat.

  As shown in Patent Document 1, a conventional industrial sewing machine is a sewing machine that employs a direct drive transmission coupling structure. When a motor drives a coupling and rotates a needle bar shaft, At the same time, the shaft seat is moved by the coupling gear to interlock the main shaft. Further, when the main shaft is rotating, the yarn feeding device provided at the end of the main shaft and the shuttle shaft are further moved, and the needle bar needle of the needle bar shaft is fed to it to match the step yarn feeding device.

  Further, as shown in Patent Document 2, in the direct drive transmission structure of the sewing machine, the transmission main shaft of the sewing machine is placed in the accommodation space in the sewing machine base, and a plurality of transmission parts are installed on the transmission main shaft.

Taiwan Notice No. M256387 Taiwan Notice No. M252720 Specification

Among the above-described conventional industrial sewing machines, in Patent Document 1, when a transmission system in which the needle bar shaft is moved by the motor shaft center and the main shaft rotates is transmitted indirectly through a belt having another tooth profile. It is necessary. Moreover, in patent document 2, the assembly in a transmission main shaft is complicated using a coupling and a motor shaft center, and there exists a fault on use assembly and transmission efficiency.
The present invention has been made in view of the above-described problems, and an object thereof is to provide a motor coupling device that can be easily assembled.

  The inventor of this application improves the external drive mechanism by the conventional industrial sewing machine, and provides a motor coupling device. In the present invention, the motor is directly assembled on the side of the machine seat. The motor has a drive shaft. The first end of the drive shaft has a large diameter portion. The second end of the drive shaft has a small diameter portion that penetrates the motor body. A first accommodation space that is a coaxial core is provided inside the large-diameter portion. The first housing space is provided to fix the first transmission component. A second transmission component is fixed on the axial center of the side of the machine seat. The second transmission component fixed on the shaft center is connected coaxially to the first transmission component provided on the drive shaft and transmits. As a result, the motor drive shaft, the first transmission component, the shaft center of the machine seat, and the second transmission component provided on the shaft center are assembled coaxially within the large-diameter portion of the drive shaft, The axis of the machine seat can be driven directly.

  In another aspect of the present invention, the motor is assembled directly on the side of the machine seat. The motor has a drive shaft. The first end of the drive shaft has a large diameter portion. The second end of the drive shaft has a small diameter portion that penetrates the motor body. A first accommodation space that is a coaxial core is provided inside the large-diameter portion. The first transmission component is provided by integral molding in the first accommodation space of the large diameter portion. Further, the second transmission component is fixed on the axial center of the side of the machine seat. By utilizing the fact that the second transmission component on the shaft center is connected to the first transmission component on the drive shaft in a coaxial manner, the drive shaft of the motor, the first transmission component, and the seat The shaft center and the second transmission component provided on the shaft center are assembled coaxially in the large-diameter portion of the drive shaft, and the motor can directly drive the shaft center of the machine seat.

The technical means according to the present invention has the following advantages compared with the prior art.
In this discussion, the first transmission component on the drive shaft and the second transmission component on the shaft center ensure that the drive shaft is directly coaxial and assembled on the machine seat axis. Since it is not necessary to perform complicated operations such as extra coaxial correction before the assembly, the assembly can be easily performed. In addition, the length space required when the two shafts are fitted can be reduced, and the space where the motor is coupled to the machine seat can be greatly reduced.
Moreover, in one aspect | mode, there exists a function of thermal radiation other than having assembled by coaxial by the integrally formed electric fan and 2nd power transmission components. In yet another aspect, when the electric fan is rotating integrally with the second transmission component using the vent hole on the end lid, the generated airflow can be smoothly moved to achieve an efficient heat dissipation effect. .

  Also, in one aspect, during transmission, the coupling between the transmission parts is used to directly receive the torque applied by rotating between the two shafts, and at the same time, the tolerance of the shaft center Is automatically and slowly performed to further remove torque. As a result, when transmitting power, it is possible to greatly reduce the vibration phenomenon caused by tolerances. In particular, it is possible to avoid the momentary sudden vibration that occurs at the time of start-up. The smoothness and accuracy of transmission can be secured.

  Further, when performing subsequent maintenance and repair, the cost required for maintenance and repair can be saved by changing the coupling that directly receives the transmitted torque. Moreover, since the service life of the first transmission component and the second transmission component can be extended by installing the coupling, the service life of the motor can be increased.

1 is a perspective view of a motor coupling device according to a first embodiment of the present invention. 1 is an exploded perspective view of a motor coupling device according to a first embodiment of the present invention. It is a disassembled perspective view which shows the other direction of the motor coupling device by 1st Embodiment of this invention. It is the disassembled perspective view which expanded the power transmission components and coupling of the motor coupling device by 1st Embodiment of this invention. 1 is a cross-sectional view of a motor coupling device according to a first embodiment of the present invention. 1 is a cross-sectional view of a motor coupling device according to a first embodiment of the present invention. It is a perspective view which shows the motor coupling device by 2nd Embodiment of this invention. It is sectional drawing which shows the motor coupling device by 2nd Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
As shown in FIGS. 1 to 3, the motor 100 of the motor coupling device according to the first embodiment of the present invention is directly assembled to the machine seat 200. An axis 201 extends from the side of the machine seat 200. The main body 10 as the motor main body of the motor 100 has a drive shaft 20, and a stator and a rotor (not shown) are installed between the drive shaft 20 and the main body 10.

  As shown in FIGS. 4 and 5, a small-diameter portion 21 that can penetrate through the main body 10 of the motor 100 is formed at one end of the drive shaft 20 that is the second end. A small diameter portion 21 that penetrates the motor 100 is provided with a handle 30 that can be selectively assembled and fixed by the main body 10 of the motor 100. The other end of the drive shaft 20 that is the first end is swollen and forms a large diameter portion 22. A first housing space 221 having a relatively large inner diameter is recessed in the large diameter portion 22. A second storage space 222 having a relatively small inner diameter is recessed from the end wall 220 of the first storage space 221 of the large-diameter portion 22 toward the inside. The first accommodation space 221 and the second accommodation space 222 are coaxial with the large diameter portion 22. Further, the first transmission component 41 is fixed in the first accommodation space 221.

  A screw hole 220 a is provided in the end wall 220 of the first accommodation space 221 of the large diameter portion 22. The first transmission component 41 is provided with a through hole 411 at the position of the screw hole 220 a corresponding to the first accommodation space 221. Since the through hole 411 through the first transmission component 41 and the screw hole 220a of the end wall 220 of the first accommodating space 221 correspond to each other, the plurality of fixing screws 412 are used to drive the first transmission component 41. The shaft 20 is fixedly locked to the end wall 220 of the large diameter portion 22 of the shaft 20.

  On the 1st transmission component 41, the 1st junction convex part 413 is provided with a space | interval. The second transmission component 42 is provided with a second joint protrusion 421 corresponding to the relative surface of the first transmission component 41. A through hole 422 is provided in the second bonding convex portion 421. By selectively sandwiching the coupling 43 between the first transmission component 41 and the second transmission component 42, the first transmission component 41 on the drive shaft 20 is connected to the second transmission component 42 on the shaft center 201. Connected to each other coaxially.

  The coupling 43 is formed in a shape that can be joined to each other in order to correspond to the design of the uneven structure in which the second transmission component 42 and the first transmission component 41 face each other. The coupling 43 can be manufactured from a material having elasticity such as rubber.

  As shown in FIG. 6, when assembling, the first transmission component 41 is first fixed to the screw hole 220 a of the end wall 220 of the first accommodation space 221 with the fixing screw 412. Further, the second transmission component 42 is fixed to the shaft center 201 of the machine seat 200 with respect to the through hole 422 provided in the second joint convex portion 421 using the fixing screw 423. Next, with the first joint convex part 413 and the second joint convex part 421 that can join the first transmission part 41 and the second transmission part 42 to each other on the relative surfaces, the motor 100 causes the drive shaft 20 to be The core 201 is assembled coaxially.

In addition, when the coupling 43 is sandwiched, the coupling 43 directly receives the torque applied by rotating between the two shafts, and at the same time, the torque of the shaft center is automatically and gradually reduced. Further, it is removed so that it can be easily assembled coaxially in the radial direction.
In the present embodiment, if necessary, the first transmission component 41 may be directly formed integrally with the end wall 220 of the large-diameter portion 22 of the drive shaft 20, and a fixing lock structure of the fixing screw 412 and the screw hole 220a. Instead, the assembly work can be simplified.

  After the assembly, as shown in FIG. 6, most of the first transmission component 41, the second transmission component 42, and the coupling 43 are all accommodated in the first accommodation space 221 of the large diameter portion 22. The shaft center 201 of the machine seat 200 extends through the first accommodation space 221 of the drive shaft 20 and is directly accommodated in the second accommodation space 222 that communicates with the first accommodation space 221. Further, the drive shaft 20 is provided with a recessed section 23 at the outer edge portion of the large diameter portion 22. The bearing 24 is fitted into the recessed section 23 at the outer edge of the large diameter portion 22, and the bearing 25 is fitted to the crossing portion between the small diameter portion 21 and the large diameter portion 22 of the drive shaft 20.

  The drive shaft 20 of the motor 100 includes a first transmission component 41 provided in the first accommodation space 221, a second transmission component 42 provided on the shaft center 201 of the machine seat 200, and a coupling 43. , It can be reached that the drive shaft 20 is assembled directly and coaxially with the shaft 201. As a result, the space required for joining both shafts is reduced, and the shaft center 201 is connected to the first transmission component 41 and the second transmission via the bearings 24 and 25 installed at the front and rear ends of the large diameter portion 22. It slides and rotates with the drive shaft 20 through the part 42.

  Further, the electric fan 50 is provided on the axis 201 of the machine seat 200. The relative device of the electric fan 50 is provided between the motor 100 and the machine seat 200. Further, a concave shaft 51 is provided at the center of the blade of the electric fan 50. Accordingly, the concave shaft 51 accommodates and fits the second transmission component 42 that is similarly fitted on the shaft center 201.

  Further, since the main body 10 of the motor 100 has a structural gap that exists between the machine seat 200 and the motor 100, the motor 100 is connected to the outside through an end cover 60 that is sandwiched between the motor seat 100 and the machine seat 200. The gap portion in the assembly structure of the motor 100 is isolated. As a result, the purpose of preventing dust is achieved, and the end cover 60 may also limit the utility of the relative position of the electric fan 50. In the present embodiment, a plurality of ventilation holes 61 are provided on the end lid 60. Thereby, the electric fan 50 is useful for the heat dissipation effect that rotates the airflow and moves the airflow.

(Second Embodiment)
A motor coupling device according to a second embodiment of the present invention is shown in FIGS. The main parts of the second embodiment are substantially the same as those of the first embodiment, and the same reference numerals are used for mutual reference, and the related description is omitted.

  In the present embodiment, the electric fan 50 </ b> A is integrally formed coaxially with the second transmission component 42. Accordingly, the second transmission component 42 can be integrally formed at the shaft center portion of the electric fan 50 </ b> A, and the electric fan 50 </ b> A can be fixedly connected to the shaft core 201. Similarly, it occurs when the electric fan 50 </ b> A rotates integrally with the second transmission component 42 through the ventilation hole 61 on the end lid 60 positioned between the motor 100 and the machine seat 200. The airflow can move more smoothly and dissipate heat, reducing noise and failure rate.

  The motor coupling device according to the above-described embodiment has a structure of the first transmission component 41 of the drive shaft 20 and the second transmission component 42 of the shaft center 201, and the coupling 43 interposed between the two transmission components is combined. That you are using. Therefore, the motor 100 needs to perform an operation such as extra coaxial correction before assembly as shown in FIGS. 5 and 6 through the purpose of driving the axis 201 of the seat 200 directly coaxially. Absent. The motor 100, the shaft center 201 of the machine seat 200, the first transmission component 41, the second transmission component 42, and the coupling 43 are all driven coaxially in the motor coupling device. In the motor coupling device of the above embodiment, when transmitting power, the coupling 43 sandwiched between the first transmission component 41 and the second transmission component 42 is connected to the large-diameter portion 220 of the drive shaft 20. It receives the mechanical torque of the transmission parts inside, and at the same time, the tolerance of the shaft center is automatically and gradually reduced to remove the torque. As a result, it is possible to greatly reduce the vibration phenomenon caused by the tolerance when transmitting power, and in particular, to avoid the instantaneous vibration that occurs at the time of start-up. The smoothness and accuracy of power transmission can be secured.

  When performing subsequent maintenance and repair, it is possible to replace the coupling 43 that has been naturally worn by directly receiving the transmitted torque. This can save costs for maintenance and repair. Further, since the service life of the first transmission component 41 and the second transmission component 43 can be extended by installing the coupling 43, the service life of the motor 100 can be increased.

  In the above description, the preferred embodiments described in this specification are illustrative and do not limit the technical scope of the present invention. Therefore, other modifications may be made without departing from the spirit and essential specific matters. Can be implemented in the manner described above.

DESCRIPTION OF SYMBOLS 10 ...... Main body 20 ... Drive shaft 21 ... Small diameter part 22 ... Large diameter part 23 ... Concave section 24 ... Bearing 25 ... Bearing 30 ... ... Handle 41 ... First transmission part 42 ... Second transmission part 43 ... Coupling 50 ... Fan 50A ... Fan 51 ... Recessed shaft 60 ... ··· End lid 61 ··· Ventilation hole 100 ··· Motor 200 ··· Machine seat 201 · · · Center axis 220 · · · End wall 220a · · · Screw hole 221 · · · One accommodation space 222... Second accommodation space 411... Through hole 412... Fixing screw 413 ... First joint projection 421 ... Second joint projection 422・ Through hole 423 ... Fixing screw

Claims (10)

A motor coupling device comprising a motor, a first transmission component, a second transmission component, and a machine seat, wherein the motor can be directly assembled to a side of the machine seat;
The first end of the motor drive shaft has a large diameter portion;
The second end of the drive shaft of the motor has a small diameter portion that penetrates the motor body,
In the inside of the large-diameter portion, in order to fix the first transmission component, a first accommodating space that is a coaxial center is provided,
Fixing the second transmission component on the axis of the side of the machine seat;
The second transmission component on the shaft center and the first transmission component on the drive shaft are coaxially connected to each other and transmitted, the drive shaft of the motor, the first transmission component, The shaft center of the machine seat and the second transmission component provided on the shaft center are coaxially assembled inside the large diameter portion of the drive shaft, and the motor is directly connected to the machine seat. A motor coupling device capable of driving an axis. A coupling sandwiched between the first transmission component and the second transmission component;
After the first transmission component, the second transmission component, and the coupling are assembled corresponding to each other, both are accommodated in the first accommodation space of the large diameter portion,
A second housing space is recessed from the end wall of the first housing space to the inside,
The motor coupling device according to claim 1, wherein the shaft center of the machine seat is accommodated in the second accommodation space directly after passing through the first accommodation space. A motor coupling device comprising a motor, a first transmission component, a second transmission component, and a machine seat, wherein the motor can be directly assembled to a side of the machine seat;
The first end of the motor drive shaft has a large diameter portion;
The second end of the drive shaft of the motor has a small diameter portion that penetrates the motor body,
A first housing space that is a coaxial core is provided inside the large diameter portion,
The first transmission component is formed by integral molding in the first accommodation space of the large diameter portion,
Fixing the second transmission component on the axis of the side of the machine seat;
The second transmission component on the shaft center and the first transmission component on the drive shaft are coaxially connected to each other and transmitted, the drive shaft of the motor, the first transmission component, The shaft center of the machine seat and the second transmission component provided on the shaft center are coaxially assembled in the large diameter portion of the drive shaft, and the motor is directly connected to the shaft center of the machine seat. A motor coupling device characterized in that the motor can be driven. A concave section is provided on the outer edge of the large diameter portion,
4. The shaft center is rotated together with the drive shaft by fitting a bearing at the concave section and a cross-intersection of the small diameter portion and the large diameter portion. The motor coupling device described in 1. A first joint convex portion is provided with an interval on the first transmission component,
4. The motor coupling device according to claim 1, wherein the second transmission component is provided with a plurality of second joint protrusions that can be coaxially connected in correspondence with a relative surface of the first transmission component. 5. . A fan provided between the motor and the machine seat;
The motor coupling device according to claim 1, wherein a concave shaft is provided in the electric fan, and the second transmission component is fixedly accommodated. A fan provided between the motor and the machine seat;
The motor coupling device according to claim 1 or 3, wherein the electric fan is integrally formed coaxially with the second transmission component. An end lid sandwiched between the motor and the machine seat;
The end cover isolates a gap portion between the motor and the machine seat,
The motor coupling device according to claim 1, wherein a plurality of ventilation holes are provided on the end lid, which is useful for an effect of moving the airflow movement. A coupling sandwiched between the first transmission component and the second transmission component;
A second housing space is recessed from the end wall of the first housing space to the inside,
The motor coupling device according to claim 3, wherein the shaft center is accommodated in the second accommodation space directly after passing through the first accommodation space.   The motor coupling device according to claim 1, further comprising a handle provided at a portion of the small-diameter portion that penetrates the motor body of the drive shaft.

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