TWM440976U - Sewing machine having easy assembled direct-drive motor - Google Patents

Description

M440976 V. New description: [New technical field] [0001] This creation relates to a sewing machine, especially a sewing machine with a direct-drive motor that is easy to assemble. [Prior Art] [0002] A conventional sewing machine includes a sewing machine table fixedly mounted on a table and having a spindle, and a motor having a transmission wheel and a clutch pedal disposed under the table top, the transmission wheel_spindle is provided by a belt connection. When the sewing machine is started, the motor is continuously rotated, and when the user presses the clutch pedal, the power generated by the motor is transmitted to the main shaft through the belt, thereby driving the sewing machine platform. If the belt tightness is not well adjusted, the motor will not be able to smoothly drive the sewing machine, which may cause the machine, belt and motor of the sewing machine to malfunction or be damaged, and the belt will be driven by the belt for a long time. The sewing machine is actuated, resulting in a smooth sewing of the fabric

[0003] In order to improve the above-mentioned conventional sewing machine, which needs to be driven by a belt and a transmission wheel, and has problems due to aging or damage of the belt, the creator designed a sewing machine of the Republic of China Patent No. 542259 to be directly driven by a mini-actuator. The device configuration is improved. The utility model comprises: a micro actuating device arranged on one side of the sewing machine; and a transmission mechanism arranged inside the sewing machine and driven by the micro actuating device. A protrusion is formed on the front end of the housing of the micro-actuator, and a hole for the fastener to pass through is provided on the protrusion to lock the micro-actuator to one side of the outside of the sewing machine. In addition, it has an axis extending outside the casing, and has a core on the axis. HU21424#单号 A〇101 Page 3 of 18 1012045774-0 M440976

The joint of the moving mechanism. The lower transmission mechanism is composed of a first transmission shaft and a second transmission shaft. The lower transmission mechanism is disposed at the bottom of the sewing machine. When the first transmission shaft is pivotally connected to the sewing machine, the first transmission shaft and the sewing machine are arranged. A bearing is arranged to facilitate the smooth running of the first transmission shaft, and an engagement portion is formed at one end of the first transmission shaft and is coupled to the joint portion of the shaft core. When the microactuator is driven, the shaft center can drive the first The transmission shaft rotates, and a connecting member is disposed on one end of the first transmission, the connecting member is configured to connect the first transmission shaft to the second transmission shaft, and at the same time, the connecting member has a plurality of holes for locking the fastener to pass through the first On the two transmission shafts, the first and second transmission shafts can be stably connected. After the first transmission shaft is driven, the second transmission shaft is rotated, so that the second transmission shaft can drive the subsequent bottom yarn supply mechanism or the seam mechanism. Actuate to allow the sewing machine to sewn the fabric.

[0004] However, in such a transmission mode, more components are required, and the first transmission shaft and the second transmission shaft are connected by a connecting member, and the locking member is locked with the first transmission shaft and the second transmission shaft. It is necessary to pay attention to the position and tightness of the locking. If the locking degree of the locking is not uniform, the first transmission shaft and the second transmission shaft cannot be coaxially positioned. Under the high speed transmission of the motor, there will be uneven force. The impact on the sewing machine can even cause damage to the machine, and it takes a long time and effort to accurately balance the locking lock. [New Content] [0005] The main purpose of this creation is to solve the problem of the combination of the direct drive servo motor and the shaft adjustment by screw locking. It needs to be very precise, otherwise it will not work smoothly or even damage the machine at high speed. The problem occurs, so the consumption of 10121424f single number A0101 page 4 / a total of 18 pages 1012045774-0 M440976 time and cost. In order to achieve the above object, the present invention provides a sewing machine having an easy-assembled direct drive motor comprising a sewing machine body and a motor body. The main body of the sewing machine includes a sewing machine table for sewing a cloth, and a shaft inserted in the sewing machine table to provide a driving force for the sewing cloth of the sewing machine table. The shaft includes a first connecting portion disposed at one end of the shaft and inserted into the sewing machine platform, a second connecting portion disposed at the other end of the shaft relative to the first connecting portion, and a first connecting portion a driving segment of the connecting segment and the second connecting segment and having a diameter that tapers from the first connecting segment to the second connecting segment. The shaft has an assembly direction extending from the second connecting section to the first connecting section. The motor body includes a rotor that incorporates the shaft, a stator that houses the rotor, and an outer casing that houses the rotor and the stator and is mounted to the sewing machine table. The rotor includes an inner wall portion that is tapered in the assembly direction and is tightly fitted to the driving segment. The outer casing includes an assembly portion that is assembled with the sewing machine platform and houses the stator, and is coupled to the assembly portion and is a support portion through which the second connecting section passes.

Further, the driving section protrudes from a linking portion, and the rotor includes a positioning groove disposed on the inner wall portion for receiving the linking portion and rotating the shaft against the interlocking portion when the rotor rotates. [0008] Further, the linking portion includes a receiving groove disposed in the driving segment, and a positioning pin disposed in the receiving slot. [0009] Further, the motor body includes a gasket sleeved on the shaft and located between the rotor and the support portion, and a lock that locks in the assembly direction and causes the gasket to press the rotor Solid. HU2U24#单单 A〇101 Page 5 of 18 1012045774-0 M440976 [0010] Further, the motor body includes a first bearing disposed on the second connecting section and connected to the supporting portion. [0011] Further, the sewing machine body has a second bearing for the first connecting section to pass through. [0012] The present invention has the beneficial effects of:

[0013] By the tapered design of the driving section and the inner wall portion of the rotor, the user only needs to sleeve the rotor on the shaft and assemble along the assembly direction, and the shaft is assembled. Will gradually fit tightly to the center of the rotor, so that the rotor and the shaft can be easily assembled in a concentric manner, and the locking portion and the gasket enhance the tightness of the rotor and the shaft, so that the rotor The shaft is driven at high speed to drive the sewing machine. In addition, in order to avoid the situation that the rotor and the shaft are idling because the rotor rotates too fast, the present invention uses the linkage to interlock the rotation of the shaft to avoid the lack of friction between the rotor and the shaft. And idling. [Embodiment]

[0014] The detailed description and technical content of the present invention will now be described as follows: [0015] Please refer to FIG. 1, FIG. 2 and FIG. 3, respectively, for the combination of the sewing machine with the direct-drive motor that is easy to assemble. Schematic, structural exploded view and sectional view, as shown in the figure: The present invention is a sewing machine having a direct drive motor that is easy to assemble, and includes a sewing machine main body 1 and a motor main body 2. The sewing machine main body 1 includes a sewing machine table 11 for sewing a sewing cloth, and a shaft 12 that is inserted into the sewing machine table 11 to provide a driving force of the sewing machine table 11 to a sewing cloth. The shaft 12 is disposed on the shaft 12 - the end plug 10121424 is strictly numbered A0101. Page 6 / 18 pages 1012045774-0 M440976 is disposed on the first connecting section 121 of the sewing machine table 11, and is disposed on the shaft 12 The other end is opposite to the second connecting section 122 of the first connecting section 121, and the first connecting section 121 and the second connecting section 122 are connected, and the diameter is gradually changed from the first connecting section 121 to the second connecting section 122. The reduced drive segment 123.

An extension portion 124 is protruded from the driving portion 123. The shaft 12 has an assembly direction D extending from the second connecting portion 122 to the first connecting portion 121. The motor main body 2 includes a rotor 21 for arranging the shaft 12, a stator 22 provided with the rotor 21, and a casing 23 for accommodating the rotor 21 and the stator 22 and mounted on the sewing machine table 11. The rotor 21 includes an inner wall portion 211 which is tapered in the assembly direction D and is tightly fitted to the driving portion 123, and a coupling portion 124 is disposed on the inner wall portion 211 and abuts when the rotor 21 rotates. The interlocking portion 124 interlocks with the positioning groove 212 for rotating the shaft 12. The outer casing 23 includes an assembly portion 231 which is assembled with the sewing machine table 11 and houses the stator 22, and is connected to the assembly portion 231 for the first portion. The support portion 232 is formed by the two connecting segments 122. [0016] In a specific embodiment of the present invention, the motor body 2 has a first bearing 26, and the sewing machine body 1 has a second bearing 13, wherein the second bearing 13 has a set of the shaft 12 The collar 131 protects the shaft 12 from direct contact with the second bearing 13 to avoid damage to the shaft 12 under high speed operation. The assembly of the present invention is as follows: First, the second bearing 13 is mounted in the sewing machine table 11, and the shaft 12 is placed, and the first connecting portion 121 of the shaft 12 is inserted into the sewing machine table 11 and Pass through the second bearing 13. Then, the rotor 21 is sleeved on the shaft 12 along the assembly direction D, and the rotor 21 is pushed to the driving section 123 along the assembly direction D. Because the inner wall portion 211 and the driving segment 123 are tapered, When the rotor 21 is pushed to the driving section 123, it will be matched with the driving section 123 and can no longer be 1012045774-0 1Q121424f single number A0101 page 7 / total 18 pages M440976 forward, at this time the rotor 21 and the shaft 12 is concentric positioning. In order to prevent the rotor 21 from being displaced in a direction opposite to the assembly direction D to disengage the shaft 12 from a position concentric with the rotor 21, the motor body 2 includes a gasket 24 and a locking portion 25, the gasket 24 After the rotor 21 is tightly fitted to the driving section 123, the second connecting section 122 is sleeved in the assembly direction, and the shaft 12 is abutted against the rotor 21, and then the locking portion 25 is sleeved thereon. After the spacer 24, and in the assembly direction]), the spacer 24 is pressed to urge the rotor 21 to fix the rotor 21 to the driving section 123. Then, the first bearing 26 and the stator 22 are respectively sleeved on the locking portion 26 and the rotor 21, and finally the outer casing 23 is sleeved, and the assembly portion 231 is assembled with the sewing machine table 11, and The support portion 232 sleeves the second connecting portion 122 of the shaft 12 . The driving section 123 and the inner wall portion 211 of the rotor 21 are tapered to have a tapered design, so that the shaft 12 is tightly fitted to the rotor 21, and the shaft is strengthened by the locking portion 25 and the spacer 24. The degree of tight fit of the rotor 21 with the rotor 21 allows the rotor 21 to smoothly drive the shaft 12' and thereby drive the sewing machine under high speed operation. [0017] Please refer to FIG. 4, FIG. 5 and FIG. 6, which are schematic diagrams of the assembly of the rotor of the sewing machine with the direct-drive motor which is easy to assemble, the operation diagram (1) and the actuation diagram (2), as shown in the figure: In the above, in order to avoid the idling between the rotor 21 and the shaft 12 due to the rotation speed of the rotor 21 being too fast, the driving section 123 is convexly provided with the linking portion 124, and the rotor 21 includes the inner wall portion 211. The positioning slot 212 of the linking portion 124 is further disposed. In the specific implementation of the present invention, the linking portion 124 includes a receiving slot 125 disposed in the driving segment 123, and a The positioning pin 126 of the receiving groove 125. The length of the locating pin 126 is greater than the depth of the accommodating slot 25, and the positioning pin 126 is placed in the accommodating slot 125, and there is a part of the convex A0101 page 8 / 18 pages 1012045774 -0 M440976, in addition to the driving segment 123, when the rotor 21 is assembled, the positioning groove 212 provided on the inner wall portion 211 corresponds to a portion of the positioning pin 126 protruding from the driving portion 123, the rotor The portion of the positioning pin 126 that is outside the driving segment 123 is accommodated in the positioning groove 212. When the rotor 21 is rotated by the magnetic repulsion (or magnetic attraction) of the stator 22, the positioning pin 126 is rotated by the positioning groove 21 2 to interlock the rotation of the shaft 12, avoiding the rotor 21 and the shaft. The rods 12 are idling due to insufficient friction.

[0018] The creation of the driving section and the inner wall portion of the rotor is such that the user only needs to sleeve the rotor on the shaft and move along the assembly direction when assembling. The shaft will gradually fit tightly to the center of the rotor, so that the rotor and the shaft can be assembled in a concentric manner in an easy and simple manner, and the locking portion and the spacer enhance the tight fit of the rotor and the shaft. To the extent that the rotor is able to drive the shaft at high speeds to drive the sewing machine. In addition, in order to avoid the situation that the rotor and the shaft are idling because the rotor rotates too fast, the present invention uses the linkage to interlock the rotation of the shaft to avoid the lack of friction between the rotor and the shaft. And idling. The conventional motor is integrated with the shaft center, and a bearing is used inside and outside to support the transmission of the guiding core and the main shaft. The motor main body of the present invention is assembled separately from the shaft, and the inside only needs to be installed in the second connecting section. The first bearing can be used, reducing the number of components and saving costs. [0019] The above description has been made in detail, but the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited by this, that is, the patent application scope is applied according to the present creation. Equivalent changes and modifications shall remain within the scope of the patents of this creation. 1〇1历历4#单编号除1 Page 9/18 pages 1012045774-0 M440976 [Simple description of the drawing] [0020] Fig. 1 is a schematic view showing the combination of a sewing machine having a direct-drive motor that is easy to assemble. [0021] FIG. 2 is a schematic exploded view showing the structure of a sewing machine having a direct drive motor that is easy to assemble. [0022] FIG. 3 is a cross-sectional view of a sewing machine having a direct drive motor that is easy to assemble. [0023] FIG. 4 is a schematic view showing the assembly of a rotor of a sewing machine having a direct drive motor that is easy to assemble. [0024] FIG. 5 is a schematic view (1) of the operation of the sewing machine with a direct drive motor that is easy to assemble. [0025] FIG. 6 is a schematic view (2) of the operation of the sewing machine with a direct drive motor that is easy to assemble. [Description of main component symbols] [0026] 1———— ......... Sewing machine body < [0027] 11 · · · · .......... Sewing machine platform [0028] 12 · · ·.............Pure. [0029] 121 ·.. ..........The first connection section [0030] 122 ··. ...... ....Second connection section [0031] 123 ··· ..... drive section [0032] 124 ··· .......... linkage section [0033] 1 〇1214^单编号125 ·· · A0101 .......... accommodating slot page 10 / total 18 pages 1012045774-0 M440976

126...............Positioning pin [0035] 13..................Second bearing [0036] 131... ...... collar [0037] 2....... ...... motor body [0038] 21...... ....... rotor [0039] 211. ..... ....... Inner wall [0040] 212..................Positioning groove [0041] 22...... ....... Stator [0042] 23.................. Housing [0043] 231...... ....... Assembly [0044] 232 ..... ..... Support [0045] 24...... .......shims [0046] 25..................Locking [0047] 26 ...... [0048] D....... ...... Assembly direction 1 () 121424 # single number A0101. Page 11 / a total of 18 pages 1012045774-0

Claims (1)

M440976, the scope of application for patents: 1. A sewing machine having a direct-drive motor that is easy to assemble, comprising: a sewing machine body, a sewing machine table including a sewing fabric, and a sewing machine table provided on the sewing machine platform to provide a sewing cloth for the sewing machine platform a shaft of the driving force, the shaft includes a first connecting portion disposed at one end of the shaft and inserted into the sewing machine table, and a second connecting portion disposed at the other end of the shaft relative to the first connecting portion And a driving segment connecting the first connecting segment and the second connecting segment and having a diameter tapered from the first connecting segment to the second connecting segment, the shaft having a second connecting segment to the first An assembly direction in which the connecting section extends; a motor main body, a rotor that fits the shaft, a stator provided with the rotor, and a casing that houses the rotor and the stator and is mounted on the sewing machine platform, The rotor includes an inner wall portion that is tapered in the assembly direction and is tightly fitted to the driving segment, the outer casing includes an assembly portion that is assembled with the sewing machine platform and houses the stator, and a set Connecting portion and the second portion for supporting the connection section is bored. 2. The sewing machine of claim 1, wherein the driving section has a coupling portion, and the rotor includes a coupling portion disposed on the inner wall portion and the rotor is disposed on the rotor When the rotation is performed, the positioning groove that the shaft rotates is interlocked against the linking portion. 3. The sewing machine of claim 2, wherein the linking portion comprises a receiving groove provided in the driving section, and a positioning pin placed in the receiving groove. 4. The sewing machine of claim 1, wherein the motor body comprises a gasket sleeved on the shaft and located between the rotor and the support portion, and a gasket Lock in the assembly direction and make lfll21424f single number A0101 page 12 / 18 pages 1012045774-0 M440976 The gasket presses the locking part of the rotor. 5. The sewing machine of claim 1, wherein the motor body comprises a first bearing disposed on the second connecting section and coupled to the support. 6. The sewing machine of claim 1, wherein the sewing machine body has a second bearing for the first connecting section to pass through. Views ^ Single Number A0101 1012045774-0 Page 13 of 18