TWI539727B - Coupling device for direct drive motor - Google Patents

Description

Direct drive motor coupling

The invention relates to a direct drive type motor coupling device, in particular to a simple structure design, which can effectively reduce the manufacturing cost, and achieves a large saving assembly procedure, reduces the swaying degree during transmission, and can transmit a direct drive with a large horsepower output. Motor coupling device.

According to the current mechanical power transmission, the indirect transmission of the pulley has been greatly improved to be replaced by a direct drive type. The direct drive motor is assembled between the drive shaft and the mechanical power shaft, mainly by using a coupling device. A joint is made to allow for a deviation from the centerline of both the drive shaft and the mechanical power shaft of the modified direct drive motor.

Please refer to the "Motor Assembly Structure" of China's Announcement No. M408878, the "Modified Structure of the Front Cover of the Motor for Driving the Pump" in China's Announcement No. 498935, and the "Must of the Announcement No. M256387" "The structure of the shaft" and the "pre-assembled structure of the motor" of China's Announcement No. I397623, mainly disclose the structure of the coupling device installed between the drive shaft and the driven shaft of the direct drive motor. The first transmission member and the second transmission member of the device are respectively combined with the direct drive motor by the transmission shaft and the mechanical transmission shaft, and then the engagement end surface of the first transmission member corresponds to the engagement end surface of the second transmission member, and The joint end faces of the first transmission member and the second transmission member are formed with concave and convex protruding teeth and grooves, and rubber joints are formed between the joint end faces of the first transmission member and the second transmission member. a cushion, and a convex tooth and a groove are formed on both ends of the cushion to respectively respectively The engaging end faces of the transmission member and the second transmission member are engaged with each other. Thereby, when the power transmission operation is to be performed, the direct drive motor is driven to drive the first drive member to be driven by the drive shaft of the direct drive motor, and the first transmission member of the rotation is a cushion formed by the engagement group. The second transmission member is driven to rotate, and the machine connected by the second transmission member is rotated by the transmission shaft to achieve the effect of driving the driven shaft.

However, the "Motor Assembly Structure" of China's Announcement No. M408878, China's Announcement No. 498,935, "Improved Structure for Motors for Driving Pumps", and China's Announcement No. M256387, "Providing Sewing Machines for Direct Drives" The existing direct drive type motor coupling device disclosed in the "coupling structure" and the "assembly structure of the motor" disclosed in the above-mentioned Japanese Patent No. I397623 is composed of at least three components of a first transmission member, a second transmission member and a cushion. The assembly of a plurality of components relatively increases the manufacturing cost in manufacturing, and as the number of assembled components increases, the tolerance due to assembly is relatively increased, resulting in sloshing and wear between the components when the components are easily actuated. Rapid damage, and in order to increase the load such as swaying, the existing coupling device often has three to four convex teeth and grooves formed on the joint end faces of the first transmission member and the second transmission member, with a view to a plurality of convexities The tooth and the groove are designed to be subjected to an average load such as shaking to reduce the damage rate. However, the first transmission member and the second transmission member are formed by the convex teeth and the groove of the joint end face. The more the number of the work system, the more complicated it is, so that the number of the teeth and the number of grooves increases, which further increases the cost of the coupling device.

Furthermore, the first transmission member usually needs to be screwed together with the driven shaft of the direct drive motor, in addition to the doubt that the screw is loosened due to vibration, and the direct drive motor is driven. The shear stress relationship of the shaft rotation makes the output horsepower output value of the direct drive motor limited, that is to say, the larger the horsepower output, the larger the volume of the coupling device and the direct drive motor must be. Starting the sewing machine, in the first transmission, The abrasion between the rubber cushion and the second transmission member is quite remarkable, which is one of the reasons why the coupling device is swayed and worn and quickly damaged.

The reason is that the present inventors have in view of the above-mentioned lack of manufacture and use of the direct-drive motor coupling device, and have been assisted by many years of experience in manufacturing and design in related fields, and have been ingeniously The drive motor coupling device was developed and improved, and the present invention was developed.

The invention relates to a direct drive type motor coupling device, the main purpose of which is to provide a simple structure design, which can effectively reduce the manufacturing cost, and achieve a large saving assembly procedure, reduce the swaying degree during transmission, and can transmit a large horsepower. Output direct drive motor coupling.

In order to achieve the above-mentioned implementation, the inventors have developed the following direct drive type motor coupling device, which comprises: a direct drive motor, which is formed with a corresponding two convex teeth on one end surface of the drive shaft of the direct drive motor. And a shaft hole is disposed at a center of the end surface of the forming tooth; the coupling member includes a rod portion and a positioning ring portion, and the rod portion of the coupling member is sleeved on the direct drive motor a groove is formed in a hole of the shaft of the transmission shaft, and a groove is formed on a peripheral wall of the rod portion of the coupling member, and an O-ring is disposed in the groove portion of the shaft portion of the coupling member to be driven by the direct drive motor The wall of the hole of the shaft is in contact with each other, and the rod portion of the coupling member is sleeved with the transmission shaft of the direct drive motor, and the positioning ring portion is formed at the periphery of the other end, and the second end of the positioning ring portion is provided with two inlays. The hole corresponds to the two convex teeth of the drive shaft of the direct drive motor, and the end face of the positioning ring portion is provided with a shaft hole recessed toward the center of the rod portion, and a shaft hole is arranged to be driven a shaft; two bushings respectively embedded in the two through holes of the coupling member, and the sleeve is recessed with a card slot for each The direct drive motor has two convex teeth corresponding to the latches of the drive shaft.

The direct drive type motor coupling device as described above, wherein the bushing is further provided with a wear portion at a groove wall of the card slot.

The direct drive type motor coupling device as described above, wherein the peripheral wall of the shaft portion of the coupling member is provided with a plurality of keyholes, and the peripheral wall of the driven shaft is provided with a plurality of flat locking surfaces for the coupling shaft The locking hole of the peripheral wall of the rod portion corresponds to the locking hole of the coupling member, and the locking hole of the coupling member is connected with the locking member to be locked with the locking surface of the peripheral wall of the driven shaft.

The direct drive type motor coupling device as described above, wherein the coupling member has a positioning ring portion further provided with a screw hole at a side adjacent to the insertion hole.

Therefore, the direct drive motor coupling device of the present invention directly molds the two convex teeth by the drive shaft of the direct drive motor, which is relatively easy to process, in addition to reducing the number of connecting components, reducing the manufacturing cost, and greatly saving assembly. program.

The direct drive motor coupling device of the present invention is a two-protrusion tooth directly formed by the transmission shaft, corresponding to the card slot of the two bushings of the coupling device, so that the tolerance between the transmission shaft and the driven shaft When it is rotated, it is automatically buffered and eliminated, and a wear-resistant portion is further formed by the groove of the groove groove, so that the degree of wear of the bushing can be greatly reduced.

In addition, in the direct drive type motor coupling device of the present invention, the two convex teeth directly formed by the transmission shaft correspond to the latches of the card slots of the two bushings, which can reduce the swaying degree during the transmission, and the relationship between the two axes The torsional stress generated by the instant start or high-speed rotation can have a relatively high bearing capacity, so that a large horsepower output can be transmitted.

The direct drive type motor coupling device of the invention is designed by arranging an O-ring from the rod portion of the coupling member, and the hole wall and the O-shape of the hole are formed when the hole of the transmission shaft is sleeved on the rod portion The ring is in conflict with the positioning, and the spindle of the drive shaft of the direct drive motor is automatically corrected with the spindle of the driven shaft, and no cumbersome work of additional concentric correction before assembly is required.

(1)‧‧‧Direct drive motor

(11)‧‧‧Drive shaft

(12)‧‧‧ convex teeth

(13) ‧‧‧ Holes

(2) ‧‧‧Couplings

(21) ‧‧‧ Rod

(211) ‧‧‧ trench

(212)‧‧‧O-ring

(213)‧‧‧Keyhole

(22)‧‧‧Axis hole

(23)‧‧‧Locker

(24) ‧‧‧ positioning ring

(241)‧‧‧ Holes

(242)‧‧‧Spiral holes

(3)‧‧‧ bushing

(31)‧‧‧ card slot

(32)‧‧‧ Wear parts

(4) ‧‧‧ slave units

(41)‧‧‧ Driven shaft

(411)‧‧‧Lock junction

First Figure: An exploded view of the present invention

Second figure: a partially enlarged exploded view of the present invention

Third figure: a combined perspective view of the present invention

Fourth Figure: A cross-sectional view of the combination of the present invention

Figure 5: Side sectional view of the combination of the present invention

In order to make the technical means of the present invention and the effects thereof can be more completely and clearly disclosed, the details are as follows. Please refer to the disclosed drawings and drawings: first, please refer to the first and second As shown, the direct drive motor coupling device of the present invention is mainly composed of a direct drive motor (1), a coupling member (2) and a bushing (3); wherein: the direct drive motor ( 1) a corresponding two convex teeth (12) are formed on one end surface of the drive shaft (11) of the direct drive motor (1), and the transmission shaft (11) is located at the formed two convex teeth (12) The end surface of the end face is provided with a hole (13); the coupling member (2), as shown in the fourth figure, includes a rod portion (21) and a positioning ring portion (24) for fastening the coupling shaft The rod portion (21) of the piece (2) is sleeved in the bore (13) of the drive shaft (11) of the direct drive motor (1), and the groove is provided on the peripheral wall of the rod portion (21) (211) The O-ring (212) is disposed in the groove (211) and is in contact with the hole wall of the hole (13) of the transmission shaft (11), so that the rod portion (21) can be stably positioned. In the bore (13) of the transmission shaft (11), the rod portion (21) of the coupling member (2) and the direct drive motor ( 1) The drive shaft (11) is sleeved to form the positioning ring portion (24) at the other end periphery, and a shaft hole (22) is recessed from the end surface of the positioning ring portion (24) toward the rod portion (21), and a plurality of keyholes (213) are provided on a peripheral wall of the rod portion (21) of the coupling member (2) to The hole (22) communicates with the lock hole (23), and the second end of the positioning ring portion (24) is provided with two holes (241), wherein the two holes are provided. (241) corresponds to the two teeth (12) of the drive shaft (11) of the direct drive motor (1), and the bushing (3) is respectively disposed in the two holes (241), and the positioning is further provided. The end surface of the ring portion (24) is provided with a screw fixing hole (242) on the side of the adjacent two insertion holes (241), and the screw fixing hole (242) is locked with a fan via a screw or the like; the bushing (3) ), which may be an elastomer such as rubber, in which the bushing (3) is embedded in the two holes (241) of the coupling member (2), and is concave at the center of the bushing (3). a card slot (31) is provided for the direct drive motor (1), wherein the two convex teeth (12) of the drive shaft (11) respectively correspond to the latch, wherein the bushing (31) of the bush (3) The groove wall is further formed with a wear portion (32) to provide better wear resistance when it is in contact with the side of the male tooth (12) of the drive shaft (11) of the direct drive motor (1).

Accordingly, when assembling, please refer to the third and fourth figures together, and insert the two bushings (3) into the fitting holes (241) of the positioning ring portion (24). Then, the O-ring (212) is sleeved into the rod portion (21) of the coupling member (2) to be clamped in the groove (211) of the rod portion (21) of the coupling member (2), and the operation is additionally performed. The fan can be further locked to the screw hole (242) of the positioning ring portion (24); the shaft hole (22) of the coupling member (2) is further directed toward the driven shaft of the driven unit (4) (41) ), to be engaged with the driven shaft (41) of the driven unit (4), and then the locking member (23) is connected to the locking hole (213) of the peripheral wall of the coupling member (2) to follow The unit (4) is locked by a flat locking surface (411) provided on the peripheral wall of the transmission shaft (41) to radially rotate the coupling member (2) and the driven unit (4) by the transmission shaft (41). Fixed to complete assembly of the coupling member (2) and the driven unit (4) by the transmission shaft (41).

The direct drive motor (1) is continuously assembled to the driven unit (4). At this time, the shaft (21) of the coupling member (2) which has been assembled with the driven unit (4) by the drive shaft (41) is Correspondingly fits into the direct drive motor (1) the hole (13) of the center of the drive shaft (11), and uses the rod portion (21) to sleeve the O-ring (212) and the drive shaft (11) The hole wall of the hole (13) is in abutment position, and the center of the drive shaft (11) of the direct drive motor (1) is automatically corrected by the center of the drive shaft (41) with the driven unit (4), otherwise Referring to the fifth figure, at this time, the two convex teeth (12) of the direct drive motor (1) whose end face of the drive shaft (11) is formed are correspondingly attached to the coupling member (2). The bushing (3) is in the card slot (31), and the direct drive motor (1) is locked with the driven unit (4) to complete the direct drive motor (1) and the coupling member (2). Assembly between the slave unit and the slave unit (4).

When the direct drive motor (1) is actuated, the drive shaft (11) of the direct drive motor (1) is a bushing (3) equipped with its two convex teeth (12) and the coupling member (2). The latch of the card slot (31) drives the coupling member (2) to rotate together with the transmission shaft (11), and at the same time, the driven unit (4) that is locked with the coupling member (2) is driven by the transmission shaft ( 41) Also connected via the coupling member (2), and the drive shaft (11) of the direct drive motor (1) rotates synchronously, thereby achieving the effect of the radial coaxial drive.

Since the direct drive motor coupling device of the present invention is designed, the two convex teeth (12) are directly formed on the drive shaft (11) of the direct drive motor (1), and the two bushings (3) are embedded and fixed on the two. The positioning ring portion (24) of the coupling member (2) is integrally fixed with the coupling member (2), so that the drive shaft (11) and the driven unit of the direct drive motor (1) can be reduced ( 4) The number of connected components between the drive shafts (41) can save the manufacturing cost and assembly procedure, and reduce the tolerances caused by component assembly, thus greatly reducing the direct drive motor (1) its drive shaft (11) The driven unit (4) is driven by the coupling member (2) When the drive shaft (41) is rotated, the swaying effect is reduced, thereby reducing the components of the direct drive motor (1), the drive shaft (11), the driven unit (4) being driven by the drive shaft (41), and the coupling member (2). The sloshing and rapid damage situation can be effectively reduced due to the swaying degree during transmission. For the direct drive motor (1), the drive shaft (11) and the driven unit (4) are driven by the drive shaft (41). Or the torsional stress generated by high-speed rotation can also have a relatively high bearing capacity, and can achieve a large horsepower output.

The foregoing embodiments or drawings are not intended to limit the implementation of the direct drive motor coupling device of the present invention. Any changes or modifications made by those skilled in the art should be considered as direct drive without departing from the invention. Type of motor coupling device patent.

As can be seen from the above structures and embodiments, the present invention has the following advantages:

1. The direct drive motor coupling device of the present invention directly molds the two convex teeth by the drive shaft of the direct drive motor, which is easy to process, in addition to reducing the number of connecting components, reducing the manufacturing cost, and greatly saving the assembly process. .

2. The direct drive motor coupling device of the present invention is a two-cranked tooth directly formed by the drive shaft, corresponding to the card slot of the two bushings of the coupling member device, so that the spindle between the drive shaft and the driven shaft When the tolerance is rotated, it is automatically buffered and eliminated, and the wear-resistant portion is further formed by the groove of the groove groove, so that the degree of wear of the bushing can be greatly reduced.

3. The direct drive type motor coupling device of the present invention is designed to reduce the sway of the transmission when the two convex teeth directly formed by the transmission shaft correspond to the latches of the card slots of the two bushings during transmission, for the two axes Due to the torsional stress generated by the instant start or high-speed rotation, it can have a relatively high bearing capacity, so it can transmit a large horsepower output.

4. The direct drive type motor coupling device of the present invention is designed by arranging an O-ring from the rod portion of the coupling member, and the hole wall and the hole of the hole are formed when the hole of the transmission shaft is sleeved on the rod portion. Type ring The position of the drive shaft of the direct drive motor is automatically corrected with the spindle of the driven shaft without the cumbersome work of additional concentric correction before assembly.

In summary, the embodiments of the present invention can achieve the expected functions, and the specific structures disclosed therein have not been seen in similar products, nor have they been disclosed before the application, and have fully complied with the requirements and requirements of the Patent Law. If you apply for an invention patent in accordance with the law, you are welcome to review it and grant a patent.

(1)‧‧‧Direct drive motor

(11)‧‧‧Drive shaft

(12)‧‧‧ convex teeth

(13) ‧‧‧ Holes

(2) ‧‧‧Couplings

(21) ‧‧‧ Rod

(211) ‧‧‧ trench

(212)‧‧‧O-ring

(213)‧‧‧Keyhole

(22)‧‧‧Axis hole

(23)‧‧‧Locker

(24) ‧‧‧ positioning ring

(241)‧‧‧ Holes

(242)‧‧‧Spiral holes

(3)‧‧‧ bushing

(31)‧‧‧ card slot

(32)‧‧‧ Wear parts

(4) ‧‧‧ slave units

(41)‧‧‧ Driven shaft

(411)‧‧‧Lock junction

Claims (6)

A direct drive type motor coupling device comprises: a drive-by-drive motor, wherein a corresponding end of a drive shaft of the direct drive motor is formed with a corresponding two convex teeth, and the drive shaft is located at the formed two convex teeth The center of the end surface is provided with a hole; a coupling member includes a rod portion and a positioning ring portion, so that the rod portion of the coupling member is sleeved in the hole of the drive shaft of the direct drive motor, and The peripheral wall of the shaft of the shaft member is provided with a groove, and an O-ring is arranged in the groove portion of the shaft of the coupling member to contact the hole of the hole of the drive shaft of the direct drive motor, and The shaft portion of the coupling member is sleeved with the transmission shaft of the direct drive motor, and the positioning ring portion is formed at the periphery of the other end, and two holes are provided on the end surface of the positioning ring portion to drive the shaft with the direct drive motor. The two convex teeth correspond to each other, and the end surface of the positioning ring portion is provided with a shaft hole recessed toward the center of the rod portion, and the shaft hole is sleeved with a driven shaft; the two bushings are respectively embedded in the shaft hole a second insertion hole of the coupling member, and a slot is recessed in the bushing, so as to correspond to the two convex teeth of the drive shaft of the direct drive motor And a wear-resistant portion is provided on the groove wall of the bushing of the bushing. The direct drive type motor coupling device according to claim 1, wherein the peripheral wall of the shaft portion of the coupling member is provided with a plurality of keyholes, and the peripheral wall of the driven shaft is provided with a plurality of flat locking surfaces. Corresponding to the locking hole of the connecting rod peripheral wall of the coupling member, and the locking hole of the coupling member is connected with the locking member to be locked with the locking surface of the peripheral wall of the driven shaft. . The direct drive type motor coupling device according to claim 2, wherein the positioning ring portion of the coupling member is further provided with a screw hole on a side adjacent to the insertion hole. A direct drive type motor coupling device comprises: a drive-by-drive motor, wherein a corresponding end of a drive shaft of the direct drive motor is formed with a corresponding two convex teeth, and the drive shaft is located at the formed two convex teeth a hole is formed in the center of the end face; a coupling member, comprising a rod portion and a positioning ring portion, the rod portion of the coupling member is sleeved in a bore of the drive shaft of the direct drive motor, and is disposed on a peripheral wall of the shaft portion of the coupling member a groove is provided, and an O-ring is arranged in the groove portion of the coupling member to contact the hole of the drive shaft of the direct drive motor, and the rod portion of the coupling member is The drive shaft of the direct drive motor is sleeved to form the positioning ring portion at the periphery of the other end, and two insertion holes are formed on the end surface of the positioning ring portion to correspond to the two convex teeth of the drive shaft of the direct drive motor. Further, an end hole of the positioning ring portion is provided with a shaft hole recessed toward the center of the rod portion, and a shaft is disposed on the shaft hole; and two bushings are respectively embedded in the two holes of the coupling member. And a card slot is recessed in the bushing, and each of the two teeth corresponding to the drive shaft of the direct drive motor is correspondingly engaged. The direct drive type motor coupling device of claim 4, wherein the peripheral wall of the shaft portion of the coupling member is provided with a plurality of keyholes, and a plurality of flat locking surfaces are provided on the peripheral wall of the driven shaft to Corresponding to the locking hole of the peripheral portion of the shaft portion of the coupling member, and the locking hole of the coupling member is connected with the locking member to be locked and locked with the locking surface of the peripheral wall of the driven shaft. The direct drive type motor coupling device according to claim 5, wherein the positioning ring portion of the coupling member is further provided with a screw hole on a side adjacent to the insertion hole.