TWM569770U - Driving device of sewing machine motor - Google Patents

Abstract

A driving device for a sewing machine motor is mounted on a front end of a sewing machine, a main shaft is disposed on an end surface of the sewing machine, and the driving device comprises an inner joint and a shell module, wherein the inner joint is directly assembled on the main shaft And a rotor set is disposed outside the inner socket, the housing module is provided with a receiving slot and a stator set is disposed therein, and the receiving slot is provided with an assembly port corresponding to the inner socket; when assembled, the housing mold The assembly port corresponds to the position of the inner socket, and is assembled with the inner socket on the front end surface of the vehicle, so that the rotor group and the stator assembly are relatively positioned in the receiving groove after assembly, and the inner joint uses the sewing machine. The original bearing on the main shaft is used for its operation, and the spindle can be rotated to perform the sewing operation without additional assembly of the bearing.

Description

Sewing machine motor drive

The present invention provides a driving technique for the sewing machine motor, and more particularly a driving device that is disposed on the front of the sewing machine to drive the main shaft of the sewing machine.

The sewing machine is a high-speed operation tool, and provides stable and accurate power output during high-speed operation. It is a major issue in maintaining the sewing quality of the sewing machine. The important part that affects the driving effect of the sewing machine motor includes the transmission structure and the positioning detection structure. .

Regarding the transmission structure, common motor drive structures usually include a front cover, a stator coil set, a rear cover, a mandrel rotor, a combination of a bearing and an encoder (ENCODER, positioning detection component), etc., since the motor itself has its own When the mandrel is assembled with the sewing machine head, since the front end itself has its own main shaft, how to correctly assemble the motor spindle and the front spindle is a major problem in the installation of the conventional motor.

At present, a motor spindle rotor is known to be fixed with the front and rear bearings, and the transmission structure of the front spindle of the sewing machine is coupled with a component such as a coupling, or the sleeve is coupled with the front and rear bearings of the spindle rotor and the front spindle. The combined transmission structure, the assembly work of the prior art mentioned above involves a wide variety of components, which makes the assembly step more complicated, wherein the motor spindle and the front spindle require high concentricity in assembly, and thus the assembly requirements of the conventional motor structure are high. The assembly work is difficult and requires a lot of experience to be applied to ensure the assembly quality, which not only takes time and labor, but also increases the difficulty of subsequent maintenance and maintenance work.

Furthermore, regarding the positioning detection structure, in order to determine the relative position of the N-pole and S-pole magnets of the rotor, it is common to add a magnet group in addition to the rotor magnet for the encoder to pass the additional magnet. Group to obtain the phase data of the motor spindle rotor magnet. It is common to fix the encoder substrate to the back cover, and install an annular magnet with N and S poles on the motor spindle, and correct the two poles to be aligned with the magnets on the rotor to allow the encoder to use the detection. The annular magnet obtains the relative position of the rotor N and S pole magnets, or the sensor transmits and detects another set of positioning magnets that rotate with the motor to indirectly detect the rotational speed or phase of the motor shaft.

The inductive encoders of the prior art described above indirectly obtain the relevant parameters of the motor spindle by sensing the additionally added magnet components. The difference between the two is directly assembled on the motor shaft, and the other is transmitted through the belt. However, the parameters are not directly sensed by the mandrel rotor, and the annular magnet is used for indirect detection. The relative position between the rotor and the magnet will also cause phase error with the use, and the previous case will also have a phase. The error can not effectively sense the relevant parameters of the motor spindle rotation, which in turn affects the control of sewing related functions. In view of this, the inventors have studied and improved the transmission structure and the positioning detection structure in the prior art, thereby providing a driving device for the sewing machine motor which is easy to assemble and has precise control.

The main purpose of the present invention is to provide a driving device for a sewing machine motor which is simplified in structure and easy to assemble. For this purpose, the driving device of the sewing machine motor is installed on one of the sewing machine heads. A spindle is disposed on the end surface, and the driving device comprises: an inner socket directly assembled on the main shaft, and a rotor group is sleeved outside the inner socket; a housing module is provided with a receiving groove A stator assembly is disposed, and the receiving slot is provided with an assembly port corresponding to the inner socket; when assembled, the housing module corresponds to the position of the inner socket by the assembly port to be assembled with the inner socket The end face of the vehicle head and the rotor set and the stator set are positioned opposite to each other in the receiving groove to drive the spindle to rotate and perform a sewing operation.

The inner socket is provided with a positioning member for setting the rotor assembly, and the housing module extends to the receiving slot to extend an abutting member for the stator assembly to abut the abutment. And the assembly is positioned to be positioned at the periphery of the rotor group on the inner socket.

The driving device further includes a sensing component directly mounted on the stator assembly for detecting the relative position of the rotor group.

The housing module has a motor cover provided with the receiving slot and a deflector disposed between the motor cover and the front end, and the inner socket is sleeved with a first fan, and the first fan is opposite to the first fan. Located at the opening of the baffle.

The baffle plate has a sheet shape.

The inner socket is relatively extended from the housing module after assembly to set a hand wheel.

The housing module has a motor cover and a guiding member, and the guiding device is disposed between the front end and the motor cover, and the inner connecting sleeve is further provided with a first fan. The first fan is located opposite the opening of the guide.

The foregoing guiding member has a plurality of air guiding spaces, and is provided with an air outlet communicating with the outside.

The inner socket is relatively extended from the housing module after assembly to set a second fan.

The second fan outer cover has an air guiding cover.

A temporary piece is disposed on the outer end surface of the air hood, and the temporary piece corresponds to the position of the end of the inner socket, and can be removed to expose the end of the inner socket when needed.

The inner socket is provided with an outer tube at the end, and a peripheral component is assembled and assembled after the temporary piece is removed.

Compared with the prior art, the stator set of the present invention is directly connected to the main shaft through the inner socket, eliminating the arrangement of the coupling, and the bearing arrangement is eliminated between the rotor group and the stator group, and the sensing component is directly built in the motor cover. The position corresponding to the rotor group is directly sensed, so that the creation can be quickly assembled to obtain an accurate assembly alignment effect, and the sensing effect is more accurate to obtain more accurate spindle running parameters, and the sewing is smooth. Work for a wider range of sewing applications. The following description is based on the technical means of this creation and the following description.

Referring to FIG. 1 to FIG. 5 , a perspective view, an exploded view, a cross-sectional view, an exploded perspective view of a peripheral component, and a three-dimensional assembled view of a peripheral component are shown in the first embodiment of the present invention. The driving device 100 is mounted on the front end A1 of the sewing machine. The front end of the front end A1 is provided with a main shaft A11. The driving device 100 mainly includes an inner connecting base 10, a housing module 20, a sensing component 30, A hand wheel 40, a first fan 50, a second fan 60, and a peripheral component 200.

The inner socket 10 is directly assembled on the main shaft A11, and a rotor group 11 is sleeved outside the inner socket 10.

The housing module 20 includes a motor cover 21 and a baffle 22 disposed between the motor cover 21 and the front A1. The motor cover 21 is provided with a receiving slot 201 and a stator assembly 23 is disposed therein, and the receiving slot 201 is provided with an assembly opening 202 corresponding to the inner socket 10.

When assembled, the housing module 20 is assembled to the end surface of the front end A1 by the assembly port 202 corresponding to the position of the inner socket 10, and the rotor assembly 11 and the stator assembly 23 are assembled. The opposite position is located in the accommodating groove 201 for driving the spindle A11 to perform a sewing operation.

The inner socket 10 in the embodiment is directly connected to the main shaft A11 at the front end of the head A1, and can be operated by the bearing (not shown) of the main shaft A11 to further exhibit the effect of lower resistance operation. .

The other end of the inner socket 10 is provided with a positioning member 12, as shown in FIG. 3, for the rotor set 11 to be set, and the housing module 20 is disposed inside the receiving slot 201 at the assembly opening 202. An abutting member 203 is extended, and the stator assembly 23 is reliably connected to the abutting member 203 so as to be fitted to the periphery of the rotor assembly 11 positioned on the inner socket 10 so that the rotor assembly 11 and the stator assembly 23 are assembled. It can maintain a proper running distance between the two and achieve good positioning.

The housing module 20 includes a sensing component 30. The sensing component 30 is directly disposed on the stator assembly 23 for detecting the relative position of the rotor assembly 11. The sensing component 30 can directly detect the magnetic poles on the rotor assembly (N pole). , S pole) distribution position and state, no need to install additional ring magnet for indirect detection, and at the same time eliminate the installation of ring magnet (not revealed on the way) level correction operation, you can directly get the most accurate operation status Sensing effect, improve the accuracy of obtaining the rotation parameters of the rotor group, and make more and more precise control effects during sewing operations, increasing its usability.

The inner socket 10 is relatively extended from the assembly port 202 of the housing module 20 after assembly. In this embodiment, a hand wheel 40 is mounted at the assembly socket 202 of the inner socket 10 for manual operation of the spindle. Rotating, the driving device 100 only needs to assemble the inner socket 10 directly on the main shaft A11, and then assembles the housing module 20, and finally penetrates the end of the inner socket 10 of the housing module 20. With the hand wheel 40 installed, the whole installation can be completed, the assembly process is simplified, and the assembly is quick and convenient.

A first fan 50 is disposed on the inner socket 10. As shown, the first fan position 50 is between the rotor group 11 and the front end A1, and the first fan 50 is opposite to the opening of the deflector 22. At 221, the profit airflow dissipates heat to the front A1 through the opening 221.

The deflector 22 of the embodiment is in the form of a sheet, and can be disposed on the recessed end slot A12 at the end surface of the front end A1, and directly uses the space of the terminating slot A12 to set the first fan 50 for simplifying the driving device 100. The setting space.

Furthermore, the inner socket 10 can be provided with a second fan 60 in the region extending from the assembly opening 202 for the heat dissipation airflow to directly dissipate the motor cover 21. The second fan 60 shown in this embodiment can be combined with the foregoing. The hand wheel 40 is integrated and integrated. In actual implementation, in addition to being integrally formed, the inner ring 10 can be separately locked.

The position at which the end of the inner socket 10 is exposed is assembled as shown in the fourth and fifth figures.

Please refer to FIG. 6 to FIG. 10 , which are a perspective view, an exploded view, a cross-sectional view, an exploded perspective view of a peripheral component, and a three-dimensional combination of peripheral components. The second embodiment is disclosed in the second embodiment. The driving device 100A is mounted on the front end A2 of the sewing machine, and a spindle A21 is disposed on the end surface of the front end A2. The driving device 100A mainly includes an inner socket 10, a housing module 20A, a sensing component 30, A first fan 50, a second fan 60A, an air hood 70A, an outer tube 80A, and a peripheral component 200.

The main components of the second embodiment are similar to those of the first embodiment and have the same functions, and the same reference numerals are given to the same reference numerals and the description thereof is omitted. The assembly of the inner housing 10 and the first fan 50 in cooperation with the main shaft A21 is the same as that of the first embodiment. The housing module 20A also includes the sensing assembly 30. The motor cover 21A has a different shape and is provided with the receiving slot 201A. The stator set 23 is accommodated and assembled with a guide member 24A to be assembled on the front A2.

The guide member 24A in the second embodiment has a thicker body and has an opening 241A. The air guiding space is formed on the body, and an air outlet 242A communicating with the outside is disposed on the lower side. The first fan 50 also guides the cooling airflow through the opening 241A to dissipate the head A2.

The second hand fan 60A is an independent setter, so that an air guiding cover 70A and an air guiding cover are separately provided, because the second hand fan 60A is an independent setter. The 70A has an opening for external airflow to enter and is blown away along the surface of the motor cover 21A to improve heat dissipation efficiency.

The outer end surface of the air guiding cover 70A in the second embodiment is provided with a temporary connecting piece 71A corresponding to the position of the end of the inner connecting seat 10, and can be removed to expose the end of the inner connecting seat 10 when necessary. After the end of the inner socket 10 is exposed, it can be disposed by an outer cylinder 80A, as shown in the figures 9 and 10, for assembly with the selected peripheral component 200.

By the implementation of the present invention, the arrangement of the coupling and the bearing in the prior art can be omitted, and the sensing component directly senses the magnetic pole of the rotor to obtain accurate spindle rotation parameters, which is convenient for assembly and can greatly improve the driving device. The quality of the operation is different from the conventional technology.

The above description is based on the technical means of the present invention to illustrate the preferred embodiments, and is not intended to limit the scope of the patent application of the present invention, and the same technical means as the present invention is used for the simple replacement of components or the equalization of similar institutions. Replacement shall be within the scope of the patent application scope of this creation.

A1‧‧‧ front

A11‧‧‧ spindle

A12‧‧‧Terminal slot

A2‧‧‧ front

A21‧‧‧ spindle

100‧‧‧ drive

100A‧‧‧ drive unit

10‧‧‧Internal seat

11‧‧‧Rotor group

12‧‧‧ Positioning parts

20‧‧‧Shell module

20A‧‧‧Shell module

21‧‧‧Motor cover

21A‧‧‧Motor cover

201‧‧‧ accommodating slots

201A‧‧‧ accommodating slots

202‧‧‧Assembly

203‧‧‧Receiving parts

22‧‧‧Baffle

221‧‧‧ openings

23‧‧‧stator group

24A‧‧‧Connector

241A‧‧‧ openings

242A‧‧ vents

30‧‧‧Sensing components

40‧‧‧Handwheel

50‧‧‧First fan

60‧‧‧second fan

60A‧‧‧second fan

70A‧‧‧wind hood

71A‧‧‧Temporary film

80A‧‧‧Outer

200‧‧‧ peripheral components

1 is a perspective view of the first embodiment of the creation; FIG. 2 is an exploded perspective view of the first embodiment of the creation; FIG. 3 is a cross-sectional view of the first embodiment of the creation; 3 is an exploded perspective view of a connecting peripheral component of an embodiment; FIG. 5 is a perspective assembled view of a connecting peripheral component of the first embodiment of the present invention; FIG. 6 is a perspective external view of the second embodiment of the present invention; 2 is an exploded perspective view of a second embodiment of the present invention; FIG. 9 is an exploded perspective view of a connecting peripheral component of the second embodiment of the present invention; FIG. 10 is a second embodiment of the present creation The three-dimensional combination diagram of the peripheral components is connected.

Claims (12)

A driving device for a sewing machine motor is mounted on a front end of a sewing machine, the front end of which is provided with a main shaft, and the driving device comprises: an inner connecting seat, directly assembled on the main shaft, and externally sleeved on the inner connecting seat a housing assembly is provided with a receiving slot and a stator assembly is disposed therein, and the receiving slot is provided with an assembly port corresponding to the inner socket; when assembled, the housing module is assembled by the assembly The position of the inner socket is matched with the inner socket to be assembled on the end surface of the vehicle head, and the rotor assembly and the stator assembly are positioned opposite to each other in the receiving groove to drive the spindle to rotate. Perform sewing work. The driving device of the sewing machine motor according to claim 1, wherein the inner socket is provided with a positioning member for setting the rotor assembly, and the housing module extends inside the receiving slot at the assembly opening. An abutting member is provided for the stator assembly to abut against the abutting member for fitting to be positioned at a periphery of the rotor assembly on the inner socket. The driving device of the sewing machine motor according to claim 1 or 2, wherein the driving device further comprises a sensing component directly mounted on the stator set for detecting the relative position of the rotor set. The driving device of the sewing machine motor according to claim 1, wherein the housing module has a motor cover provided with the receiving groove and a deflector disposed between the motor cover and the front end, and the inner cover The socket is further provided with a first fan, and the first fan is opposite to the opening of the deflector. A driving device for a sewing machine motor according to claim 4, wherein the deflector is in the form of a sheet. The driving device of the sewing machine motor according to claim 1 or 2 or 4, wherein the inner socket is relatively extended from the housing module after assembly to set a hand wheel. The driving device of the sewing machine motor according to claim 1, wherein the housing module has a motor cover and a guiding member provided with the receiving groove, and the guiding member is disposed on the front end and the motor cover And the inner socket is sleeved with a first fan, and the first fan is opposite to the opening of the guiding member. The driving device of the sewing machine motor according to claim 7, wherein the guiding member has a plurality of air guiding spaces, and is provided with an air outlet communicating with the outside. A driving device for a sewing machine motor according to claim 1 or 2 or 7, wherein the inner socket is relatively extended from the housing module after assembly to provide a second fan. The driving device of the sewing machine motor according to claim 9, wherein the second fan outer cover is provided with an air guiding cover. The driving device of the sewing machine motor according to claim 10, wherein the outer surface of the air guiding cover is provided with a temporary piece corresponding to the position of the end of the inner connecting seat, and can be removed when needed. The end of the inner socket. The driving device of the sewing machine motor according to claim 11, wherein the inner socket is provided with an outer cylinder at the end, and a peripheral component is assembled and assembled after the temporary patch is removed.