JP4717920B2 - Sewing machine transmission and heat dissipation structure - Google Patents

Description

  The present invention relates to a power transmission and heat dissipation structure for a sewing machine, and it is possible to reduce the assembly space and reduce noise by incorporating a motor in a partition of the main body by using a precision simple and novel power transmission component and a good heat dissipation device. A good heat dissipation effect is achieved.

  Sewing machines are essential equipment for the apparel garment industry. In the past, traditional sewing machines maintained normal machine operation by stepping. Along with the progress of the times, now it is powered by an automatic motor regardless of whether it is an industrial sewing machine or a small household sewing machine. Obviously a significant level up is seen.

  Also, in order to meet various apparel sewing demands, traditional sewing machines have created various processing machines with different special functions from the original simple structure design. In this industry, related products have been actively researched and developed, and many improved products have been born and have been patented.

As shown in FIG. 1, although the functional structure of each part described above continues to improve, as shown in FIG. 1, a known sewing machine transmission motor is still old and is usually provided under the surface of the machine. The connection arrangement is complicated. The disadvantages existing in the design are as follows.
(1) Since the motor is arranged below the machine table surface, an incision hole for hooking a belt and connecting to the transmission main shaft must be added on the machine table, and the distance is long and takes a space.
(2) At least two belt gears and two belts are arranged on the transmission main shaft, and the lower thread drive shaft and needle bar drive shaft are rotated together by their movements, but there are too many parts and the assembly is troublesome. In addition, vibration, noise, and failure are likely to occur between the components when the motor rotates, and the motor is also subjected to an unreasonable force and becomes high temperature, and failure is likely to occur.

  In order to solve the above-mentioned drawbacks of the known sewing machine, the present invention provides a transmission and heat dissipation structure for the sewing machine. This achieves the purpose of reducing the production cost by reducing the assembly space by means of elaborately simple transmission parts and a good heat dissipation device. In addition, the assembly of the sewing machine is further simplified, and the product is not only durable but also convenient to maintain.

  In order to achieve the above-described object, the transmission and heat dissipation structure of the sewing machine designed by the present invention is such that a motor for transmitting power is directly built in the main body of the sewing machine and a heat dissipation structure is provided. It mainly comprises a main body spindle, a needle bar drive shaft, a lower thread drive shaft, and a transmission belt. The main body main shaft is directly fitted with a motor behind it, a heat dissipation shaft is provided between the motor and the main body main shaft, and a first belt gear is installed on the main body main shaft. A second belt gear is provided at one end of the needle bar drive shaft. A third belt gear is provided at one end of the lower thread drive shaft. The transmission belt is installed on the first belt gear, the second belt gear, and the third belt gear. The bottom plate and the two side plates are provided with air inlets, and the outer peripheral edge of the partition opening is provided with an air outlet. When the motor is directly connected and built into the partition at the lower rear of the main body using the above-mentioned components, the combination space is reduced, and the main spindle is also a single transmission belt and the lower thread drive shaft and needle bar drive shaft are simultaneously connected. Interlocked. The overall structure is elaborate and simpler to assemble. In addition, a heat radiating shaft is provided between the motor and the main spindle, and the air inlet and the air outlet are installed in accordance therewith, so that noise is reduced and a good heat radiating effect is achieved.

  The present invention is an accurate and simple, novel transmission component and a good heat dissipation device, and incorporates a motor in the partition of the main body, thereby reducing the assembly space and reducing noise and achieving a good heat dissipation effect. Have

As shown in FIGS. 2 to 6 of the present invention, the transmission and heat dissipation structure of the sewing machine designed according to the present invention is such that a motor for transmitting power is directly arranged on the main body 60 of the sewing machine. It mainly comprises a main body main shaft 10, a needle bar drive shaft 30, a lower thread drive shaft 40, and a transmission belt 50.
The main body spindle 10 is directly fitted with a motor 20 at the rear thereof, a heat dissipation shaft 23 is provided between the motor 20 and the main body spindle 10, and a first belt gear 11 is installed on the main body spindle 10.
The needle bar drive shaft 30 is provided with a second belt gear 31 at one end thereof.
The lower thread drive shaft is provided with a third belt gear 41 at one end thereof.
The transmission belt 50 is installed on the first belt gear 11, the second belt gear 31, and the third belt gear 41.
When implementing, since the partition 61 is provided in the back of the main body 60 of a sewing machine, if the front stage of the motor 20 and the heat radiation shaft 23 are inserted from the opening 62 at the back of the main body 60 and mounted in the partition 61, the combination space is reduced. Thus, the main body 60 and the motor 20 are integrated. Further, a bush 22 is fitted and fixed between the motor shaft 21 and the main body main shaft 10, and bearings 12 and fixing parts 13 are provided at both ends of the main body main shaft 10, and are fitted and mounted on the main body 60. Bearings 32 and fixed parts 33 are provided on both the left and right ends of the needle bar drive shaft 30, and a manual gear 34 is externally attached to one side of the needle bar drive shaft 30. A bearing 42 and a fixing part 43 are provided at the other end of the lower thread drive shaft 40, and a cam 44 is coupled to the end.

  As shown in FIGS. 4 and 5, the front stage of the motor 20 and the heat dissipation shaft 23 are inserted into the partition 61 of the main body 60 from the opening 62 at the rear of the main body 60 and mounted in a built-in state. In order to provide a good heat dissipation effect, an air inlet 71 and an air inlet 81 are provided on both the corresponding bottom plate 70 and the two side plates 80, and an air outlet 90 is provided at the outer peripheral edge of the opening 62 of the partition 61. Is provided.

  As a result, as shown in FIGS. 3 to 6, the motor 20 that transmits power is directly connected to the lower portion of the main body 60 to be integrated, thereby reducing the combination space and further stabilizing the entire main body 60. During operation, the heat radiation shaft 23, the air inlet 71 of the bottom plate 70, the air inlet 81 of the two side plates 80, and the air outlet 90 provided at the outer peripheral edge of the opening 62 of the partition 61 provide good heat dissipation, and the main body. The main shaft 10 simultaneously interlocks the lower thread drive shaft 40 and the needle bar drive shaft 30 by a single transmission belt 50. The overall structure is therefore elaborate and simple to assemble, effectively reducing production costs, and the product is not only durable but also easy to operate and maintain. In addition, the single transmission belt 50 is designed so that there is no error during transmission of the main body spindle 10, the needle bar drive shaft 30, and the lower thread drive shaft 40, and the motor 20 that transmits power is arranged directly behind the lower portion of the main body 60 of the sewing machine. As a result, the operation is further stabilized and noise reduction and failure can be prevented.

It is an internal transmission structure figure of a well-known sewing machine. It is an exploded view regarding the transmission structure of this invention. It is a three-dimensional figure regarding the transmission structure of this invention. It is an external view regarding the transmission structure of this invention. It is a three-dimensional figure regarding the transmission and heat dissipation structure of this invention. It is an external view of the whole assembly of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main body main shaft 11 1st belt gear 12 Bearing 13 Fixed component 20 Motor 21 Motor shaft 22 Bush 23 Radiating shaft 30 Needle bar drive shaft 31 Second belt gear 32 Bearing 33 Fixed component 34 Manual gear 40 Lower thread drive shaft 41 Third belt gear 42 Bearing 43 Fixed component 44 Cam 50 Transmission belt 60 Main body 61 Partition 62 Opening 70 Bottom plate 71 Air inlet 80 Side plate 81 Air inlet 90 Air outlet

Claims (4)

In the power transmission and heat dissipation structure of the sewing machine, where the motor that transmits power is directly provided on the main body of the sewing machine, and the heat dissipation device is arranged,
A main body in which a transmission structure is installed in the main body and a heat dissipation device is disposed;
The main body spindle , wherein a motor is fitted on the rear end, and a heat dissipation shaft is provided between the motor and the first belt gear .
A needle bar drive shaft provided with a second belt gear at one end;
A lower thread drive shaft provided with a third belt gear at one end;
A first belt gear, a second belt gear, and a transmission belt provided on the third belt gear;
Thus, the a transmission structure motor to reduce the combined space by coupling arranged directly integrated on the body, the body main axis also simultaneously drives the bobbin thread drive shaft and the needle bar driving shaft by a single transmission belt Sewing machine transmission and heat dissipation structure. In transmission and heat dissipation structure of the sewing machine according to claim 1, a partition provided in the lower rear portion of the main body, the motor front and radiator shaft internal state from the opening provided in part by being inserted into the partition after the body A transmission and heat dissipation structure for a sewing machine, which is mounted and has a bush fitted and fixed between the motor shaft and the main body shaft.   The transmission and heat dissipation structure of the sewing machine according to claim 1, wherein both ends of the main body spindle are provided with bearings and fixing parts fitted on the main body, respectively, and bearings and fixing parts are provided at both left and right ends of the needle bar drive shaft, A transmission and heat dissipation structure for a sewing machine characterized in that a manual gear is externally attached to one side of the needle bar drive shaft, a bearing and a fixing part are provided on the other end of the lower thread drive shaft, and a cam is connected to the end. . The transmission and heat dissipation structure of the sewing machine according to claim 1, wherein the heat dissipation structure is composed of a combination of a motor and a heat dissipation shaft as a transmission structure, and an air inlet is provided on the bottom plate of the main body, and the two side plates are opposed to each other. transmission and heat radiation structure of the sewing machine air inlets provided in the partition opening periphery edge, wherein the kite with an air outlet.

Images