Transmission device and electric tool thereof

Abstract

The utility model provides a transmission device and an electric tool thereof, the transmission device is used for the electric tool, the transmission device is provided with a driving motor to provide power for the electric tool, the transmission device further comprises a cooling device, the cooling device is provided with a first cooling piece and a second cooling piece, the first cooling piece and the second cooling piece are oppositely arranged, and the first cooling piece and the second cooling piece are arranged oppositely. The first cooling part and the second cooling part can get close to each other or get away from each other, a containing space exists between the first cooling part and the second cooling part, the driving motor is arranged in the containing space, and at least one part of the driving motor is attached to the cooling device, so that heat generated in the running process of the driving motor is dissipated to the cooling device. And the first cooling part and the second cooling part can move relatively, so that the cooling device can be suitable for driving motors of more models, and the practicability of the cooling device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to a transmission device and an electric tool thereof. Background Art

[0002] Electric tools are usually driven by motors. However, in actual use, there is a problem: when the electric tool is used for a long time, the temperature of the drive motor increases, which shortens the service life of the drive motor. The internal structure of the electric tool is compact and the heat is not easy to dissipate. Utility Model Content

[0003] Therefore, the utility model provides a transmission device and an electric tool thereof to solve the problem that the internal heat of the electric tool is not easy to dissipate, thereby increasing the service life of the driving motor.

[0004] To solve the above problems, the utility model provides a transmission device, which is used for an electric tool. The transmission device is provided with a driving motor to provide power to the electric tool. The transmission device also includes: a cooling device, the cooling device having a first cooling component and a second cooling component, the first cooling component and the second cooling component are arranged opposite to each other, and the first cooling component and the second cooling component can be close to each other or far away from each other, there is an accommodating space between the first cooling component and the second cooling component, the driving motor is arranged in the accommodating space, and at least a part of the driving motor is in contact with the cooling device.

[0005] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the cooling device includes a first cooling component and a second cooling component, and there is an accommodation space between the first cooling component and the second cooling component, so that the drive motor can be placed in the accommodation space, and the drive motor and at least a part of the cooling device fit each other, so that the heat generated by the drive motor during operation can be transferred to the cooling device, thereby reducing the temperature of the drive motor, wherein the first cooling component and the second cooling component can move relative to each other, so that the cooling device can be applicable to more models of drive motors, thereby enhancing the practicality of the cooling device.

[0006] Furthermore, the cooling device includes: a heat dissipation pipe, which is arranged inside the first cooling component, and the heat dissipation pipe covers the entire first cooling component, and liquid flows in the heat dissipation pipe to reduce the temperature of the drive motor.

[0007] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: a heat dissipation pipe is provided inside the first cooling component, and liquid is stored in the heat dissipation pipe. The liquid flows in the heat dissipation pipe to take away the heat of the drive motor, thereby reducing the temperature of the drive motor. The heat dissipation pipe covers the entire first cooling component, thereby improving the cooling effect of the cooling device.

[0008] Furthermore, the first cooling component includes: a liquid replenishing port, which is connected to the heat dissipation pipe so that liquid can be replenished into the heat dissipation pipe through the liquid replenishing port.

[0009] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the liquid replenishing port is connected with the heat dissipation pipe, which is convenient for the staff to replenish liquid into the heat dissipation pipe through the liquid replenishing port, thereby avoiding the lack of liquid in the heat dissipation pipe affecting the cooling effect.

[0010] Furthermore, the cooling device also includes: a pump body, which is arranged on a side of the first cooling component away from the second cooling component, and the pump body drives the liquid to flow.

[0011] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the pump body is arranged on the side of the first cooling component away from the second cooling component to avoid the pump body occupying the accommodation space, and the pump body can drive the liquid to flow, so that the liquid can reduce the temperature of the drive motor.

[0012] Furthermore, the cooling device also includes: a telescopic member, which is arranged between the first cooling member and the second cooling member, and one end of the telescopic member is fixedly connected to the first cooling member, and the other end of the telescopic member is fixedly connected to the second cooling member.

[0013] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: a telescopic member is provided between the first cooling member and the second cooling member, and the telescopic member can slide and retract to adjust the distance between the first cooling member and the second cooling member, thereby adjusting the size of the accommodating space, so that the cooling device can be suitable for more models of drive motors.

[0014] Furthermore, the telescopic member includes: a telescopic tube, a telescopic rod, and the telescopic rod is slidably arranged in the telescopic tube. When the telescopic rod extends out of the telescopic tube, the second cooling member is away from the first cooling member.

[0015] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the telescopic member is composed of a telescopic tube and a telescopic rod, at least a portion of the telescopic rod is arranged in the telescopic tube, and the distance between the first cooling member and the second cooling member is adjusted by telescoping, thereby adjusting the size of the accommodating space, so that the cooling device can be suitable for more models of drive motors.

[0016] Furthermore, the transmission device also includes: a transmission shaft, which is in transmission connection with the drive motor.

[0017] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the drive motor rotates after being energized, driving the transmission shaft to rotate around its own axis, thereby transmitting power.

[0018] Furthermore, the transmission device also includes: a driving gear, which is arranged at one end of the transmission shaft away from the driving motor, and the driving gear is fixedly connected to the transmission shaft, so that the transmission shaft drives the driving gear to rotate.

[0019] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the driving gear is fixedly connected to the transmission shaft, and when the transmission shaft rotates around its own center, it drives the driving gear to rotate, and then transmits power to the driving gear.

[0020] Furthermore, the transmission device also includes: a driven gear, and the driven gear is meshed with the driving gear.

[0021] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the driven gear and the driving gear mesh with each other, so that the driving gear drives the driven gear to rotate.

[0022] Furthermore, the present application also provides an electric tool, which includes a transmission device.

[0023] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the electric tool of the present application is provided with a transmission device of any technical solution of the present application, therefore, it has all the beneficial effects of the transmission device of any technical solution of the present application, which will not be repeated here.

[0024] After adopting the technical solution of the utility model, the following technical effects can be achieved:

[0025] (1) The cooling device comprises a first cooling member and a second cooling member, wherein there is an accommodation space between the first cooling member and the second cooling member, so that the drive motor can be placed in the accommodation space, and the drive motor and at least a portion of the cooling device are in contact with each other, so that the heat generated by the drive motor during operation can be transferred to the cooling device, thereby reducing the temperature of the drive motor, wherein the first cooling member and the second cooling member can move relative to each other, so that the cooling device can be applied to more models of drive motors, thereby enhancing the practicality of the cooling device;

[0026] (2) A heat dissipation pipe is provided inside the first cooling element. Liquid is stored in the heat dissipation pipe. The liquid flows in the heat dissipation pipe to take away the heat of the drive motor, thereby reducing the temperature of the drive motor. The heat dissipation pipe covers the entire first cooling element, thereby improving the cooling effect of the cooling device.

[0027] (3) A telescopic rod is provided between the first cooling component and the second cooling component. The telescopic rod can slide and retract to adjust the distance between the first cooling component and the second cooling component, thereby adjusting the size of the accommodating space, so that the cooling device can be suitable for more models of drive motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1A schematic diagram of the structure of an electric tool provided by an embodiment of the utility model;

[0029] Figure 2 is a partial schematic diagram of a transmission device;

[0030] Figure 3 for Figure 2 Enlarged view of area A

[0031] Figure 4 It is a structural schematic diagram of a cooling device;

[0032] Figure 5 This is the distribution diagram of the heat pipe.

[0033] Description of reference numerals:

[0034] 100: transmission device; 110: driving motor; 120: cooling device; 121: first cooling member; 121a: liquid replenishing port; 122: second cooling member; 123: accommodating space; 124: heat dissipation pipe; 125: pump body; 126: telescopic member; 126a: telescopic tube; 126b: telescopic rod; 130: transmission shaft; 140: driving gear; 150: driven gear; 200: electric tool. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] The present application provides a transmission device 100. The transmission device 100 is as shown in the attached Figure 2 As shown, the transmission device 100 is used for an electric tool. The transmission device 100 is provided with a driving motor 110 to provide power to the electric tool. The transmission device 100 also includes: a cooling device 120. The cooling device 120 has a first cooling component 121 and a second cooling component 122. The first cooling component 121 and the second cooling component 122 are arranged opposite to each other, and the first cooling component 121 and the second cooling component 122 can be close to each other or away from each other. There is an accommodating space 123 between the first cooling component 121 and the second cooling component 122. The driving motor 110 is arranged in the accommodating space 123, and at least a portion of the driving motor 110 is in contact with the cooling device 120.

[0037] Specifically, the cooling device 120 is as shown in the attached Figure 4As shown, the cooling device 120 is provided with a first cooling component 121 and a second cooling component 122. The first cooling component 121 and the second cooling component 122 are arranged opposite to each other. There is an accommodating space 123 between the first cooling component 121 and the second cooling component 122, so that the drive motor 110 can be provided in the accommodating space 123. The drive motor 110 and the cooling device 120 fit each other, so that when the temperature of the drive motor 110 rises, the heat can be transferred to the cooling device 120, thereby reducing the temperature of the drive motor 110. The first cooling component 121 and the second cooling component 122 can move relatively, so that the cooling device 120 can be applicable to more models of drive motors 110, thereby enhancing the practicality of the cooling device 120.

[0038] For example, the cooling device 120 includes: a heat dissipation pipe 124 , which is disposed inside the first cooling component 121 , and the heat dissipation pipe 124 covers the first cooling component 121 , and liquid flows in the heat dissipation pipe 124 to reduce the temperature of the drive motor 110 .

[0039] For example, see the attached Figure 5 As shown, a heat dissipation pipe 124 is laid on the first cooling component 121, and the heat dissipation pipe 124 covers the entire first cooling component 121. The heat dissipation pipe 124 forms a loop so that liquid can circulate. The liquid in the heat dissipation pipe 124 is a coolant. During the flow of the coolant, the temperature of the drive motor 110 is reduced.

[0040] Specifically, the first temperature-cooling component 121 includes a liquid replenishing port 121 a , which is in communication with the heat dissipation pipe 124 , so that liquid can be replenished into the heat dissipation pipe 124 through the liquid replenishing port 121 a .

[0041] Specifically, as attached Figure 4 As shown, the first cooling component 121 is provided with a liquid replenishing port 121a, which is connected to the heat dissipation pipe 124, so that the staff can replenish the cooling liquid into the heat dissipation pipe 124 through the liquid replenishing port 121a to avoid the lack of cooling liquid in the heat dissipation pipe 124 affecting the cooling effect.

[0042] For example, the cooling device 120 further includes: a pump body 125 , which is disposed on a side of the first cooling component 121 away from the second cooling component 122 , and the pump body 125 drives the liquid to flow.

[0043] For example, as shown in the attached Figure 4 As shown, the pump body 125 is arranged on a side of the first cooling component 121 away from the second cooling component 122 to prevent the pump body 125 from occupying the accommodation space 123 . The pump body 125 can drive the liquid to flow so that the liquid can reduce the temperature of the drive motor 110 .

[0044] In addition, the second cooling component 122 is also provided with a heat dissipation pipe 124, and the heat dissipation pipe 124 covers the entire second cooling component 122 to form a loop. A second fluid replenishment port is provided on the second cooling component 122, and the second fluid replenishment port is connected to the heat dissipation pipe 124, so that the staff can inject coolant into the heat dissipation pipe 124 through the second fluid replenishment port. A pump body 125 is provided on the side of the second cooling component 122 away from the first cooling component 121, and the pump body 125 drives the coolant to circulate.

[0045] Specifically, the cooling device 120 also includes: a telescopic member 126, which is disposed between the first cooling member 121 and the second cooling member 122, and one end of the telescopic member 126 is fixedly connected to the first cooling member 121, and the other end of the telescopic member 126 is fixedly connected to the second cooling member 122.

[0046] Specific instructions, as attached Figure 4 As shown, the telescopic member 126 is disposed between the first cooling member 121 and the second cooling member 122. The telescopic member 126 can slide and retract to adjust the distance between the first cooling member 121 and the second cooling member 122, thereby adjusting the size of the accommodating space 123, so that the cooling device 120 can be suitable for more models of drive motors 110.

[0047] For example, the telescopic member 126 includes a telescopic tube 126a and a telescopic rod 126b. The telescopic rod 126b is slidably disposed in the telescopic tube 126a. When the telescopic rod 126b extends out of the telescopic tube 126a, the second cooling member 122 is away from the first cooling member 121.

[0048] For example, as shown in the attached Figure 4 As shown, the telescopic member 126 is composed of a telescopic tube 126a and a telescopic rod 126b, at least a portion of the telescopic rod 126b is arranged in the telescopic tube 126a, and the distance between the first cooling member 121 and the second cooling member 122 is adjusted by telescoping, thereby adjusting the size of the accommodating space 123, so that the cooling device 120 can be suitable for more models of drive motors 110.

[0049] Specifically, the transmission device 100 further includes a transmission shaft 130 , which is transmission-connected to the drive motor 110 .

[0050] Specific instructions, as attached Figure 3 As shown, the driving motor 110 rotates after being energized, driving the transmission shaft 130 to rotate around its own axis, thereby transmitting power.

[0051] For example, the transmission device further includes: a driving gear 140, which is disposed at one end of the transmission shaft 130 away from the driving motor 110, and the driving gear 140 is fixedly connected to the transmission shaft 130, so that the transmission shaft 130 drives the driving gear 140 to rotate.

[0052] For example, as shown in the attached Figure 3 As shown, the driving gear 140 is fixedly connected to the transmission shaft 130 . When the transmission shaft 130 rotates around its own axis, it drives the driving gear 140 to rotate, thereby transmitting power to the driving gear 140 .

[0053] Specifically, the transmission device 100 further includes a driven gear 150 , and the driven gear 150 is meshed with the driving gear 140 .

[0054] Specific instructions, as attached Figure 3 As shown, the driven gear 150 and the driving gear 140 are meshed with each other, so that the driving gear 140 drives the driven gear 150 to rotate.

[0055] The present application also provides an electric tool 200, as shown in the attached Figure 1 As shown, the power tool 200 includes the transmission device 100 .

[0056] The electric tool 200 of the present application is provided with the transmission device 100 of any technical solution of the present application, and therefore, it has all the beneficial effects of the transmission device 100 of any technical solution of the present application, which will not be described in detail here.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A transmission device, characterized in that: The transmission device (100) is used for an electric tool, the transmission device (100) is provided with a driving motor (110) to provide power to the electric tool, and the transmission device (100) further comprises: A cooling device (120), the cooling device (120) comprising a first cooling component (121) and a second cooling component (122), the first cooling component (121) and the second cooling component (122) being arranged opposite to each other, and the first cooling component (121) and the second cooling component (122) being able to approach each other or move away from each other, an accommodating space (123) being present between the first cooling component (121) and the second cooling component (122), the driving motor (110) being arranged in the accommodating space (123), and at least a portion of the driving motor (110) being in contact with the cooling device (120).

2. The transmission device according to claim 1, characterized in that: The temperature reduction device (120) comprises: A heat dissipation pipe (124), the heat dissipation pipe (124) being arranged inside the first cooling component (121), and the heat dissipation pipe (124) completely covers the first cooling component (121), and liquid flows in the heat dissipation pipe (124) to reduce the temperature of the drive motor (110).

3. The transmission device according to claim 2, characterized in that: The first cooling element (121) comprises: A liquid replenishing port (121a), the liquid replenishing port (121a) being in communication with the heat dissipation pipe (124), so that the liquid is replenished into the heat dissipation pipe (124) through the liquid replenishing port (121a).

4. The transmission device according to claim 2, characterized in that: The temperature reduction device (120) further includes: A pump body (125), the pump body being arranged on a side of the first cooling component (121) away from the second cooling component (122), and the pump body (125) driving the liquid to flow.

5. The transmission device according to claim 1, characterized in that: The temperature reduction device (120) further includes: A telescopic member (126), the telescopic member (126) being arranged between the first cooling member (121) and the second cooling member (122), and one end of the telescopic member (126) being fixedly connected to the first cooling member (121), and the other end of the telescopic member (126) being fixedly connected to the second cooling member (122).

6. The transmission device according to claim 5, characterized in that: The telescopic member (126) comprises: Telescopic tube (126a); A telescopic rod (126b), wherein the telescopic rod (126b) is slidably disposed in the telescopic tube (126a), and when the telescopic rod (126b) extends out of the telescopic tube (126a), the second cooling component (122) is away from the first cooling component (121).

7. The transmission device according to claim 1, characterized in that: The transmission device (100) further comprises: A transmission shaft (130), the transmission shaft (130) being transmission-connected to the drive motor (110).

8. The transmission device according to claim 7, characterized in that: The transmission device (100) further comprises: A driving gear (140), the driving gear (140) being arranged at one end of the transmission shaft (130) away from the drive motor (110), the driving gear (140) being fixedly connected to the transmission shaft (130), so that the transmission shaft (130) drives the driving gear (140) to rotate.

9. The transmission device according to claim 8, characterized in that: The transmission device (100) further comprises: A driven gear (150), the driven gear (150) and the driving gear (140) are meshed with each other.

10. An electric tool, characterized in that: The electric tool (200) comprises the transmission device (100) according to any one of claims 1 to 9.

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