Electric control of sewing machine and sewing machine

Abstract

The utility model provides an electric control of a sewing machine and the sewing machine, and belongs to the technical field of sewing equipment. The electronic controller comprises a shell, the shell is provided with a containing cavity used for installing a motor, the side wall of the containing cavity is provided with a first heat dissipation groove or / and a second heat dissipation groove which can be opposite to cooling fins of a circuit board, and the first heat dissipation groove or / and the second heat dissipation groove penetrate through the side wall of the containing cavity. Air flow generated when the motor rotates can flow along the side wall of the containing cavity and flow out of the first heat dissipation groove or / and the second heat dissipation groove. When the electric controller is used, air flow generated during rotation of the motor can smoothly flow out of the first heat dissipation grooves or / and the second heat dissipation grooves, the flowability of the air flow is better, heat dissipation is better conducted on the heat dissipation fins, and the heat dissipation effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewing equipment technical field relates to a sewing machine's electric control and sewing machine. BACKGROUND

[0002] The motor is installed on the electric control of the sewing machine, and the electric control is installed on the casing of the sewing machine. The back of the electric control is provided with a circuit board. During operation, the circuit board and electronic components on the circuit board will generate heat. Among them, the main control chip and the capacitor are prone to generate more heat. When the heat is too large, it affects the normal operation of the circuit board.

[0003] In order to solve the above technical problems, the patent document with the application number 201721068260.8 discloses a kind of sewing machine electric control device, including electric control shell, circuit board is fixed in shell;One end of shell is provided with a metal heat sink, heat sink and shell inner cavity are fixed with circuit board between;Heat sink includes integrally formed heat dissipation part one and heat dissipation part two;Heat dissipation part one is arranged on the upper side of circuit board;Heat dissipation part two is formed in the lower end of heat sink and is arranged on the circumferential side of circuit board;The space formed by heat dissipation part one, heat dissipation part two and shell inner cavity cavity wall is provided with circuit board.

[0004] In the prior art, there is also a ventilation hole on the electric control for heat dissipation. The ventilation hole is opposite to the circuit board. The disadvantage of this structure is that the airflow is not easy to flow out of the ventilation hole, resulting in poor heat dissipation effect. SUMMARY

[0005] The utility model discloses in view of the above problems existing in prior art, provide a kind of sewing machine's electric control, the technical problem to be solved by the utility model is: how to improve heat dissipation effect.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A kind of sewing machine's electric control, including shell, the shell has the containing cavity for installing motor, it is characterized in that, the containing cavity side wall is provided with the heat dissipation groove one or / and heat dissipation groove two that can be opposite with the fin of circuit board, the heat dissipation groove one or / and heat dissipation groove two are through containing cavity side wall, airflow generated when motor rotates can flow along containing cavity side wall and flow out of heat dissipation groove one or / and heat dissipation groove two.

[0008] The working principle is that the electric control is installed on the housing of the sewing machine, the motor is installed in the accommodating cavity, and a large amount of heat is generated on the heat dissipation fin. The heat dissipation groove one and / or the heat dissipation groove two are arranged on the side wall of the accommodating cavity and opposite to the heat dissipation fin. When the motor rotates, the airflow generated by the hand wheel installed on the rotating shaft of the motor rotates with the rotating shaft, and the airflow enters the accommodating cavity through the heat dissipation groove one and / or the heat dissipation groove two. The airflow flows along the side wall of the accommodating cavity, and then smoothly flows out of the heat dissipation groove one and / or the heat dissipation groove two. The flowability of the airflow is better, so that the heat dissipation fin is better cooled, and the heat dissipation effect is improved.

[0009] In the electric control of the sewing machine, the heat dissipation groove one and / or the heat dissipation groove two extend along the circumference of the side wall of the accommodating cavity.

[0010] The heat dissipation groove one and / or the heat dissipation groove two are arranged to extend along the circumference of the side wall of the accommodating cavity. Under the centrifugal force when the motor rotates, the airflow flows out of the heat dissipation groove one and the heat dissipation groove two at a high speed along the tangent direction of the side wall, further improving the heat dissipation effect.

[0011] In the electric control of the sewing machine, the heat dissipation groove one and / or the heat dissipation groove two extend from the outside to the inside along the inner wall of the accommodating groove and penetrate the inner wall of the accommodating groove.

[0012] The heat dissipation groove one and / or the heat dissipation groove two also penetrate the inner wall of the accommodating groove. This structure makes the airflow flow out of the inner wall of the accommodating groove, and more airflow cools the heat dissipation fin, better improving the heat dissipation effect.

[0013] In the electric control of the sewing machine, the side wall of the accommodating cavity is further provided with a heat dissipation groove three opposite to the capacitor device, and the heat dissipation groove three extends along the circumference of the side wall of the accommodating cavity.

[0014] In this structure, the flowing airflow flows out of the heat dissipation groove three to cool the capacitor device. The heat dissipation groove three extends along the circumference of the side wall of the accommodating cavity. Under the centrifugal force when the motor rotates, the airflow flows out of the heat dissipation groove three at a high speed along the tangent direction of the side wall, bringing better heat dissipation effect.

[0015] In the electric control of the sewing machine, the side wall of the accommodating cavity is further provided with a heat dissipation groove four, and the heat dissipation groove four penetrates the side wall of the accommodating cavity.

[0016] The heat dissipation groove four is used for auxiliary heat dissipation, so that more airflow cools the circuit board, better improving the heat dissipation effect.

[0017] In the electric control of the sewing machine, the accommodating cavity is cylindrical, and the heat dissipation groove one and the heat dissipation groove two are distributed on the circumference of the side wall of the accommodating cavity.

[0018] The accommodating cavity is cylindrical, and the side wall thereof is arc-shaped, and when the motor rotates, the airflow flows along the inner wall of the arc-shaped wall, so that the airflow flows more smoothly, the airflow can flow out of the heat dissipation groove I and / or the heat dissipation groove II more quickly, and a better heat dissipation effect is brought.

[0019] In the electric control of the sewing machine, the housing is further provided with a baffle, and the baffle is located outside the side wall of the accommodating cavity and opposite to the heat dissipation groove III.

[0020] During the rotation of the motor, the airflow generated by the motor can easily carry dust into the housing, and the baffle arranged outside the accommodating cavity can block the dust from entering the circuit board from the heat dissipation groove III, thereby playing a dustproof role.

[0021] The utility model also provides a sewing machine, the sewing machine includes any one of the electric control.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] When the electric control is used, the airflow generated by the rotation of the motor can flow out of the heat dissipation groove I and / or the heat dissipation groove II smoothly, the airflow has better flowability, the heat dissipation fins are better cooled, and the heat dissipation effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structure diagram of the electric control Figure 1 ;

[0025] Figure 2 It is a structure diagram of the electric control Figure 2 ;

[0026] Figure 3 It is a structure diagram of the electric control installed on the machine shell.

[0027] In the figure: 1 housing, 2 accommodating cavity, 3 side wall, 4 heat dissipation groove I, 5 heat dissipation groove II, 6 inner wall, 7 heat dissipation groove III, 8 heat dissipation groove IV, 9 baffle, 10 machine shell. DETAILED DESCRIPTION

[0028] The following is a specific embodiment of the utility model, and the technical scheme of the utility model is further described in combination with the drawings, but the utility model is not limited to these embodiments.

[0029] For example, Figure 1 And 3As shown, the electronic control unit includes a housing 1, which has a receiving cavity 2 for mounting a motor. The side wall 3 of the receiving cavity 2 is provided with a heat dissipation groove 4 or / and a heat dissipation groove 5 that can be opposite to the heat sink of the circuit board. The heat dissipation groove 4 or / and the heat dissipation groove 5 penetrate the side wall 3 of the receiving cavity 2. The airflow generated when the motor rotates can flow along the side wall of the receiving cavity 2 and flow out from the heat dissipation groove 4 or / and the heat dissipation groove 5.

[0030] The electrical control is installed on the sewing machine housing 10, and the motor is installed in the receiving cavity 2. A significant amount of heat is generated on the heat sink. Heat dissipation slot 4 and / or heat dissipation slot 5 are located on the side wall 3 of the receiving cavity 2 and opposite to the heat sink. The airflow generated when the motor rotates (a handwheel is mounted on the motor shaft; the airflow is generated when the handwheel rotates with the shaft and enters the receiving cavity 2 through heat dissipation slot 4 and / or heat dissipation slot 5) flows along the side wall 3 of the receiving cavity 2, and then flows smoothly out through heat dissipation slot 4 and / or heat dissipation slot 5. This improved airflow enhances heat dissipation for the heat sink and improves the overall cooling effect.

[0031] like Figure 1 As shown, in this embodiment, heat dissipation groove 4 and heat dissipation groove 5 extend circumferentially along the side wall 3 of the receiving cavity 2.

[0032] Heat dissipation slot 1 4 and heat dissipation slot 2 5 are arranged to extend circumferentially along the side wall 3 of the receiving cavity 2. Under the centrifugal force when the motor rotates, the airflow passes through heat dissipation slot 1 4 and heat dissipation slot 2 5 at high speed along the tangential direction of the side wall 3, further improving the heat dissipation effect.

[0033] like Figure 1 As shown, in this embodiment, heat dissipation groove 4 and heat dissipation groove 5 extend from the outside to the inside along the inner wall 6 of the receiving groove and penetrate through the inner wall 6 of the receiving groove.

[0034] Heat dissipation slot 1 4 and heat dissipation slot 2 5 also penetrate the inner wall 6 of the receiving slot. This structure allows airflow to flow out from the inner wall 6 of the receiving slot, and more airflow to dissipate heat from the heat sink, thus improving the heat dissipation effect.

[0035] like Figure 1 As shown, in this embodiment, a heat dissipation groove 3 7 that can be opposite to the capacitor component is also provided on the side wall 3 of the receiving cavity 2. The heat dissipation groove 3 7 extends circumferentially along the side wall 3 of the receiving cavity 2.

[0036] In this structure, the airflow flows out from the heat dissipation slot 3 7 to dissipate heat from the capacitor components. The heat dissipation slot 3 7 extends circumferentially along the side wall 3 of the receiving cavity 2. Under the centrifugal force when the motor rotates, the airflow flows out at high speed through the heat dissipation slot 3 7 along the tangential direction of the side wall 3, resulting in better heat dissipation.

[0037] like Figure 1Or 3, in the embodiment, the side wall 3 of the accommodating cavity 2 is further provided with a fourth heat dissipation groove 8 penetrating through the side wall 3 of the accommodating cavity 2.

[0038] The fourth heat dissipation groove 8 is used for assisting heat dissipation, so that more air flow is used to dissipate heat of the circuit board, and the heat dissipation effect is improved.

[0039] As shown in Figure 2 Or 3, in the embodiment, the accommodating cavity 2 is cylindrical, and the first heat dissipation groove 4 and the second heat dissipation groove 5 are distributed on the circumferential direction of the side wall 3 of the accommodating cavity 2.

[0040] The accommodating cavity 2 is cylindrical, and the side wall 3 of the accommodating cavity 2 is arc-shaped, so that when the motor rotates, the air flow flows along the arc-shaped inner wall 6, the air flow flows out of the first heat dissipation groove 4 and / or the second heat dissipation groove 5 more quickly, and the heat dissipation effect is better.

[0041] As shown in Figure 2 In the embodiment, the shell 1 is further provided with a blocking strip 9, and the blocking strip 9 is located outside the side wall 3 of the accommodating cavity 2 and opposite to the third heat dissipation groove 7.

[0042] During the rotation of the motor, the air flow generated by the motor is easy to carry dust into the shell 1, and the blocking strip 9 arranged outside the side wall 3 of the accommodating cavity 2 can block the dust from entering the circuit board from the third heat dissipation groove 7, so that the dust is prevented from entering the circuit board.

[0043] The utility model further provides a sewing machine, the sewing machine includes the above-mentioned any kind of electric control.

[0044] The specific embodiments described in the present application are only examples of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace, but will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. An electrical control for a sewing machine, comprising a housing (1) having a receiving cavity (2) for mounting a motor, characterized in that, The side wall (3) of the receiving cavity (2) is provided with a heat dissipation groove one (4) or / and a heat dissipation groove two (5) that can be opposite to the heat sink of the circuit board. The heat dissipation groove one (4) or / and the heat dissipation groove two (5) penetrate the side wall (3) of the receiving cavity (2). The airflow generated when the motor rotates can flow along the side wall of the receiving cavity (2) and flow out from the heat dissipation groove one (4) or / and the heat dissipation groove two (5).

2. The electronic control system for a sewing machine according to claim 1, characterized in that, The first heat dissipation groove (4) and / or the second heat dissipation groove (5) extend circumferentially along the side wall (3) of the receiving cavity (2).

3. The electronic control system for a sewing machine according to claim 1, characterized in that, The first heat dissipation groove (4) and / or the second heat dissipation groove (5) extend from the outside to the inside along the inner wall (6) of the receiving groove and penetrate the inner wall (6) of the receiving groove.

4. The electronic control system for a sewing machine according to claim 1, 2, or 3, characterized in that, The side wall (3) of the cavity (2) is also provided with a heat dissipation groove (7) that is opposite to the capacitor component. The heat dissipation groove (7) extends circumferentially along the side wall (3) of the cavity (2).

5. The electronic control system for a sewing machine according to claim 1, 2, or 3, characterized in that, The side wall (3) of the receiving cavity (2) is also provided with a heat dissipation groove (8), which penetrates the side wall (3) of the receiving cavity (2).

6. The electronic control system for a sewing machine according to claim 1, 2, or 3, characterized in that, The cavity (2) is cylindrical, and the heat dissipation groove one (4) and heat dissipation groove two (5) are distributed on the circumferential direction of the side wall (3) of the cavity (2).

7. The electronic control system for a sewing machine according to claim 4, characterized in that, The housing (1) is also provided with a baffle (9), which is located on the outside of the side wall (3) of the receiving cavity (2) and opposite to the heat dissipation groove (7).

8. A sewing machine, characterized in that, The sewing machine includes an electronically controlled device as described in any one of claims 1-7.

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