Handheld Power Tools

Abstract

A handheld power tool provided by the present invention comprises: a main body; a first interface and a second interface are arranged on the main body; a first power source; which is used to be connected to the first interface so as to provide power to the handheld power tool; a second power source; which is used to be connected to the second interface so as to provide power to the handheld power tool; an avoidance structure, which has a first state and a second state, in the first state, the avoidance structure allows the first power source to access the first interface and prevents the second power source from accessing the second interface; in the second state, the avoidance structure allows the second power source to access the second interface and prevents the first power source from accessing the first interface; an embodiment of the present application provides a handheld power tool that can avoid connecting two power sources at the same time.

Description

Technical Field

[0001] The invention relates to a gardening tool, in particular to a handheld electric tool. Background Art

[0002] At present, with the increase in workload, the power of handheld power tools is also getting bigger. In order to meet the voltage requirements of handheld power tools for energy sources, battery packs with higher voltages are used, but the higher the voltage, the heavier the handheld weight. Therefore, larger battery packs are often carried on the body, so handheld power tools use two types of battery packs and backpack batteries. Some handheld power tools have two battery pack interfaces. The two battery pack interfaces are used to connect the battery pack and the backpack battery, respectively. However, this can easily lead to the situation where the battery pack and the backpack battery are connected to the handheld power tool at the same time, that is, when the battery pack is connected to the handheld power tool, the backpack battery may be connected to the handheld power tool at the same time. When the backpack battery is connected to the handheld power tool, the battery pack may be connected to the handheld power tool at the same time. This can easily cause the handheld power tool to fail.

[0003] Therefore, it is necessary to provide a handheld electric tool to overcome the above-mentioned defects. Summary of the invention

[0004] In view of this, an embodiment of the present application provides a handheld power tool that can avoid being connected to two power sources at the same time.

[0005] The above-mentioned object of the present invention can be achieved by adopting the following technical scheme: a handheld electric tool, comprising:

[0006] A main body; the main body is provided with a first interface and a second interface;

[0007] A first power source; used to be connected to the first interface to provide power to the handheld power tool;

[0008] A second power source; used to be connected to the second interface to provide power to the handheld power tool;

[0009] The avoidance structure has a first state and a second state. In the first state, the avoidance structure allows the first power supply to access the first interface and prevents the second power supply from accessing the second interface; in the second state, the avoidance structure allows the second power supply to access the second interface and prevents the first power supply from accessing the first interface.

[0010] As a preferred implementation, the avoidance structure is configured on one of the first power source, the second power source and the main body.

[0011] As a preferred embodiment, the avoidance structure includes a connecting portion and a stop portion; the connecting portion is used to connect to the first power supply or the second power supply, and the stop portion is used to enable the avoidance structure to switch between the first state and the second state.

[0012] As a preferred embodiment, the connecting portion is connected to the second power source.

[0013] In the first state, the stopper can abut against the first power source after the first power source is connected to the first interface, so as to form a first avoidance space between the stopper and the main body to limit the second power source from connecting to the second interface;

[0014] In the second state, after the second power source is connected to the second interface, the stop portion can cover at least a portion of the first interface along the installation direction of the first interface to prevent the first power source from being connected to the first interface.

[0015] As a preferred embodiment, the connecting portion is connected to the first power source.

[0016] In the first state, after the first power source is connected to the first interface, the stopper can cover at least a portion of the second interface along the installation direction of the second interface to prevent the second power source from being connected to the second interface;

[0017] In the second state, the stopper can abut against the second power source after the second power source is connected to the second interface, so as to form a second avoidance space between the stopper and the main body to limit the first power source from connecting to the first interface.

[0018] As a preferred embodiment, the connecting portion is a longitudinally extending tube body that is sleeved with the first power source or the second power source; the stopper portion is arranged on the outer wall of the tube body, and the stopper portion protrudes radially from the outer wall of the tube body.

[0019] As a preferred embodiment, the avoidance structure includes a linkage mechanism, and the linkage mechanism includes a first stopper and a second stopper that prevents the second power source from being connected to the second interface.

[0020] When the avoidance structure is in the first state, the first power source is connected to the first interface, the first power source triggers the first stopper, the first stopper drives the second stopper, and the second stopper prevents the second power source from connecting to the second interface;

[0021] When the avoidance structure is in the second state, the second power supply is connected to the second interface, the second power supply triggers the second stopper, the second stopper drives the first stopper, and the first stopper prevents the first power supply from connecting to the first interface.

[0022] As a preferred implementation, the first power source is a battery pack; the second power source is a backpack power source, including a backpack or a waist bag, and a battery pack installed on the backpack or the waist bag.

[0023] As a preferred implementation, the handheld power tool is a blowing device, the main body includes a blower housing, and the first interface and the second interface are both arranged on the blower housing.

[0024] As a preferred implementation, the first interface has a first access terminal; the second interface has a second access terminal, and the first access terminal and the second access terminal extend toward the same side of the housing.

[0025] The beneficial effect of the handheld power tool provided by the present application is that the handheld power tool described in the embodiment of the present application is provided with an avoidance structure, and the avoidance structure has a first state and a second state, so that through the first state, when the first power source is connected to the first interface, the second power source can be prevented from being connected to the second interface. And through the second state, when the second power source is connected to the second interface, the first power source can be prevented from being connected to the first interface. In this way, the main body is prevented from being connected to the first power source and the second power source at the same time. Therefore, the embodiment of the present application provides a handheld power tool that can avoid being connected to two power sources at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0027] Figure 1 is a structural schematic diagram of a handheld power tool provided by an embodiment of the present invention;

[0028] Figure 2 It is a structural schematic diagram of an avoidance structure provided in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 11. Main body; 15. Second power supply; 16. First interface; 18. Second interface; 19. Avoidance structure; 21. First stop surface; 23. Second stop surface; 26. Connecting part; 28. Stop part; 29. ​​Housing; 31. Opening; 33. Installation chamber; 41. Threaded cover; 44. Socket; 46. First access terminal; 47. Cable plug; 48. Second access terminal. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 and Figure 2 A handheld power tool provided in one embodiment of the present application includes: a main body 11; a first interface 16 and a second interface 18 are provided on the main body 11; a first power source; which is used to be connected to the first interface 16 to provide power to the handheld power tool; a second power source 15; which is used to be connected to the second interface 18 to provide power to the handheld power tool; an avoidance structure 19, which has a first state and a second state, and in the first state, the avoidance structure 19 allows the first power source to access the first interface 16 and prevents the second power source 15 from accessing the second interface 18; in the second state, the avoidance structure 19 allows the second power source 15 to access the second interface 18 and prevents the first power source from accessing the first interface 16.

[0033] It can be seen from the above technical solution that the handheld power tool described in the embodiment of the present application is provided with an avoidance structure 19, and the avoidance structure 19 has a first state and a second state, so that when the first power source is connected to the first interface 16, the second power source 15 can be prevented from being connected to the second interface 18 through the first state. And when the second power source 15 is connected to the second interface 18, the first power source can be prevented from being connected to the first interface 16 through the second state. In this way, it is prevented that the main body 11 is connected to both the first power source and the second power source 15 at the same time.

[0034] In this embodiment, the handheld power tool of the embodiment of the present application can be, for example, a hair dryer. Of course, the handheld power tool is not limited to a hair dryer, but can also be other tools, such as a lawn mower, etc., which is not specified in this application.

[0035] In this embodiment, the main body 11 includes a housing 29, and in this embodiment, the housing 29 is a fan housing, and a flow channel for airflow is formed in the fan housing. Furthermore, a fan for forming a negative pressure is provided in the main body 11. Thus, the gas outside the main body 11 can enter the flow channel under the action of negative pressure and form an airflow. Furthermore, a motor for driving the fan to rotate is also provided in the main body 11. Of course, the main body 11 is not limited to being provided with a fan and a motor, and other equipment can also be provided, which is not specified in this application.

[0036] Furthermore, the main body 11 is provided with a first interface 16 and a second interface 18. Specifically, for example Figure 1 As shown, the first interface 16 and the second interface 18 are arranged on the fan housing.

[0037] In this embodiment, the first power supply is used to be connected to the first interface 16 so as to provide power to the handheld power tool. Thus, when the first power supply is connected to the first interface 16, the first power supply can supply power to the main body 11. Specifically, for example, the first power supply is used to supply power to the motor in the main body 11. Of course, the first power supply is not limited to supplying power to the motor, but can also supply power to other devices, which is not specified in this application. Further, the first power supply can be a battery pack. For example, the first power supply is a battery pack with a power supply voltage of 20V. Of course, the power supply of the first power supply is not limited to 20V, but can also be other voltages, such as 25V, which is not specified in this application.

[0038] Furthermore, further, the first interface 16 may be a dedicated interface for a common battery pack, for connecting a common battery pack.

[0039] Specifically, the first interface 16 has a first access terminal 46. The first access terminal 46 is used to connect to the first power source. When the first access terminal 46 is connected to the first power source, the current in the first power source can flow into the main body 11 through the first access terminal 46, thereby powering the handheld power tool.

[0040] More specifically, the first interface 16 may be provided with a hollow installation chamber 33. The installation chamber 33 is used to install the first power source. A battery clip for fixing the first power source is provided in the installation chamber 33. The first access terminal 46 includes a positive terminal and a negative terminal provided in the installation chamber 33. The positive terminal is used to connect the positive electrode of the first power source. The negative terminal is used to connect the negative electrode of the first power source.

[0041] Furthermore, the installation chamber 33 is open toward one side of the housing 29. Specifically, Figure 1As shown, the installation chamber 33 has an opening 31 that opens outward. Thus, the first power supply can be placed in the installation chamber 33 through the opening 31. Further, a slide rail is installed in the opening 31. The first power supply can move along the slide rail to enter the installation chamber 33.

[0042] Furthermore, the first interface 16 is disposed inside the housing 29. Thus, the positive terminal and the negative terminal in the first interface 16 can be protected by the housing 29 to prevent the positive terminal and the negative terminal from being damaged by external devices. Of course, the first interface 16 is not limited to being disposed inside the housing 29, and the first interface 16 can also be disposed outside the housing 29, which is not specified in this application.

[0043] In this embodiment, the second power supply 15 is used to be connected to the second interface 18 so as to provide power to the handheld power tool. Thus, when the second power supply 15 is connected to the second interface 18, the second power supply 15 can supply power to the main body 11. Specifically, for example, the second power supply 15 is used to supply power to the motor in the main body 11. Of course, the second power supply 15 is not limited to supplying power to the motor, but can also supply power to other devices, which is not specified in this application. Further, the second power supply 15 can be a backpack power supply, including a backpack or a waist bag, and a battery pack installed on the backpack or the waist bag. For example, the second power supply 15 is a backpack power supply with a power supply voltage of 80V. Of course, the power supply of the second power supply 15 is not limited to 80V, but can also be other voltages, such as 60V, which is not specified in this application. However, the voltage of the second power supply is higher than the voltage of the first power supply, so that the different requirements of the main body 11 for the power supply voltage can be met by the first power supply and the second power supply 15.

[0044] Furthermore, the second interface 18 may be a backpack power supply dedicated cable interface for connecting the backpack power supply.

[0045] Furthermore, the second interface 18 has a second access terminal 48. The second access terminal 48 is used to connect to the second power source 15. Therefore, when the second access terminal 48 is connected to the second power source 15, the current in the second power source 15 can flow into the main body 11 through the second access terminal 48, thereby supplying power to the main body 11.

[0046] Furthermore, if Figure 1 As shown, the first access terminal 46 and the second access terminal 48 extend toward the same side of the housing 29. Thus, the first power source and the second power source 15 can be connected to the same side of the housing 29. When the second power source 15 is connected to the second interface 18, the avoidance structure 19 can extend toward the first interface 16, so as to form a stop for the first interface 16 in the installation direction. In this way, the first access terminal 46 and the second access terminal 48 are prevented from extending toward both sides of the housing 29, and the avoidance structure 19 is not easy to form a stop for the first interface 16.

[0047] Further, the extension direction of the first access terminal 46 may be consistent with the extension direction of the second access terminal 48, so that the access direction of the first interface 16 is consistent with the access direction of the second interface 18. Of course, the extension direction of the first access terminal 46 may not be consistent with the extension direction of the second access terminal 48. This application does not make any provisions for this.

[0048] Specifically, the access direction of the first interface 16 is the direction in which the first power source is connected to the first interface 16. Specifically, the first power source is installed in the installation chamber 33 through the opening 31. In this way, the direction in which the first power source is connected to the first interface 16 is the moving direction of the first power source in the opening 31. Figure 1 As shown, the opening 31 of the first interface 16 is open toward the left side of the housing 29. Therefore, the movement direction of the first power source in the opening 31 is the left-right direction. Thus, the access direction of the first interface 16 is the left-right direction.

[0049] The access direction of the second interface 18 is the direction in which the second power source 15 is connected to the second interface 18. Specifically, the second power source 15 is connected to the second interface 18 by contacting the jack 44 on it with the plug of the second interface 18. In this way, the direction in which the second power source 15 is connected to the second interface 18 is the extension direction of the plug. Figure 1 As shown, the plug of the second interface 18 extends in the left-right direction. Therefore, the direction in which the second power source 15 is connected to the second interface 18 is the left-right direction.

[0050] More specifically, the second interface 18 may be a four-core or five-core cable socket for mating with a backpack battery plug. Figure 1 The second interface 18 is as follows Figure 1 The cable socket is capable of connecting a cable having a Figure 1 The backpack battery of the cable plug 47 shown in the figure. Further, the cable plug 47 is circular. The cable plug 47 includes a threaded cover 41 and a socket 44 arranged in the threaded cover 41. The cable socket matched with the cable plug 47 has a second access terminal 48. The second access terminal 48 includes: a plug core for matching the socket 44. When the cable plug 47 is inserted into the cable socket, the plug core contacts the socket 44, and the current of the backpack battery flows into the main body 11 through the plug core, thereby supplying power to the main body 11.

[0051] Furthermore, the second interface 18 is located on one side of the housing 29. Figure 1 As shown, the second interface 18 is located on the left side of the housing 29 .

[0052] Furthermore, the opening 31 of the second interface 18 and the first interface 16 are located on the same side of the housing 29. Figure 1As shown, the opening 31 of the second interface 18 and the first interface 16 are both located on the left side of the housing 29. Specifically, the plug of the cable socket extends toward the side of the housing 29 where the opening 31 of the first interface 16 is located. Thus, the first power source 15 and the second power source 15 can be connected to the housing 29 from the same side of the housing 29.

[0053] Furthermore, the second interface 18 is disposed inside the housing 29. Thus, the ferrule inside the second interface 18 can be protected by the housing 29 to prevent the ferrule from being damaged by external devices. Of course, the second interface 18 is not limited to being disposed inside the housing 29, and the second interface 18 can also be disposed outside the housing 29, which is not specified in this application.

[0054] Furthermore, the first access terminal 46 and the second access terminal 48 are staggered in a direction perpendicular to the extension direction of the first access terminal 46 and / or the second access terminal 48. The first access terminal 46 and the second access terminal 48 are staggered, that is, the first interface 16 and the second interface 18 are arranged side by side in the left-right direction.

[0055] In this embodiment, the avoidance structure 19 has a first state and a second state. In the first state, the avoidance mechanism allows the first power supply to access the first interface 16, and prevents the second power supply 15 from accessing the second interface 18. This ensures that the first power supply and the second power supply 15 cannot access the first interface 16 and the second interface 18 at the same time. In the second state, the avoidance mechanism allows the second power supply 15 to access the second interface 1816, and prevents the first power supply 15 from accessing the first interface 16. This ensures that the first power supply and the second power supply 15 cannot access the first interface 16 and the second interface 18 at the same time. Therefore, the first state and the second state of the avoidance structure 19 can prevent the main body 11 from being connected to the first power supply and the second power supply 15 at the same time.

[0056] In one embodiment, the avoidance structure 19 is configured on one of the first power source, the second power source 15 and the main body 11. Specifically, the avoidance structure 19 can be configured on the first power source. Alternatively, the avoidance structure 19 can be configured on the second power source 15. Alternatively, the avoidance structure 19 can be configured on the main body 11. For example, Figure 1 As shown, the avoidance structure 19 is used to be configured on the second power source 15 .

[0057] Specifically, the avoidance structure 19 can be fixed to one of the first power source, the second power source 15 and the main body 11. The fixing method can be screw fixing, bolt fixing, welding fixing, integral molding fixing, etc., which is not specified in this application. Therefore, by fixing the avoidance structure 19 to one of the first power source, the second power source 15 and the main body 11, the avoidance structure 19 can be formed into a whole with one of the first power source, the second power source 15 and the main body 11, so as to reduce the steps of installing and disassembling the avoidance structure 19, thereby simplifying the operation.

[0058] In one embodiment, the first power source and the second power source 15 can be connected to the first interface 16 and the second interface 18 in the same direction respectively. The avoidance structure 19 includes a connecting portion 26 and a stopper 28. The connecting portion 26 is used to connect to the first power source or the second power source 15, and the stopper 28 is used to realize the switching of the avoidance structure between the first state and the second state.

[0059] In a specific embodiment, the connecting portion 26 is connected to the second power supply 15. In the first state, the stop portion 28 can, after the first power supply is connected to the first interface 16, when the second power supply 15 is installed along the installation direction toward the second interface, the stop portion 28 can resist the first power supply, thereby preventing the second power supply from continuing to be installed toward the second interface, so that the stop portion 28 and the first power supply can cooperate with the main body 11 to form a first avoidance space that limits the second power supply 15 from connecting to the second interface 18; in the second state, after the second power supply 15 is connected to the second interface 18, the stop portion 28 can cover at least a portion of the first interface 16 along the installation direction of the first interface 16, thereby preventing the first power supply from connecting to the first interface 16 along the installation direction.

[0060] More specifically, for example Figure 1 As shown, when the connecting portion 26 is connected to the cable plug 47 of the second power supply 15, the avoidance structure 19 can move with the cable plug 47 of the second power supply 15. When the first power supply is connected to the first interface 16, it is not restricted by the stopper 28, in the first state. When the first power supply is connected to the first interface 16, part of the first power supply extends out of the installation chamber 33 through the opening 31. When the cable plug 47 of the second power supply 15 is moved toward the second interface 18, the avoidance structure 19 also moves toward the second interface 18. When the stopper 28 abuts against the first power supply protruding out of the first interface 16, the first power supply will limit the second power supply 15 from continuing to move toward the second interface 18, and the first power supply, the first stopper surface 21 and the second interface 18 are surrounded by a first avoidance space. Due to the existence of the first avoidance space, the jack 44 in the cable plug 47 on the second power supply 15 cannot continue to be installed toward the second interface, so that the second power supply 15 cannot be connected to the second interface 18. As a result, when the first power supply is connected to the first interface 16, the second power supply 15 cannot be connected to the second interface 18.

[0061] Further, the second power source 15 is connected to the second interface 18 in the second state. After the second power source 15 is connected to the second interface 18, the stopper 28 extends radially outward from the cable plug 47 of the second power source 15, and extends to face the first interface 16 and covers at least part of the slide rail in the first interface 16 along the installation direction of the first interface 16. Thus, the first interface 16 is at least partially blocked, thereby preventing the first power source from being connected to the first interface 16.

[0062] Further, the avoidance structure 19 is not limited to being arranged on the cable plug 47 of the second power supply 15, but can also be arranged on the connector. Specifically, the connector is used to connect the cable plug 47 and the second interface 18, so that the cable plug 47 can be connected to the second interface 18 through the connector. Therefore, when the specifications of the cable plug 47 are not compatible with the specifications of the second interface 18, the cable plug 47 can be connected to the second interface 18 through the connector. At this time, the connector can be an adapter. Specifically, the connector has a first connection end and a second connection end. The first connection end is used to adapt to the cable plug 47 of the second power supply 15. The second connection end is used to adapt to the second interface 18. Therefore, the second power supply 15 can be connected to the second interface 18 through the first connection end and the second connection end.

[0063] In another specific embodiment, the connecting portion 26 is connected to the first power supply. In the first state, the stop portion 28 can cover at least a portion of the second interface 18 along the installation direction of the second interface 18 after the first power supply is connected to the first interface 16 to prevent the second power supply 15 from being connected to the second interface 18; in the second state, the stop portion 28 can, after the second power supply 15 is connected to the second interface 18 and when the first power supply is connected to the first interface 16, resist against the second power supply 15 to form a second avoidance space between the main body 11 and the main body 11 to limit the first power supply from being connected to the first interface 16.

[0064] More specifically, when the connecting portion 26 is sleeved on the first power source, the avoidance structure 19 can move with the first power source. In the first state, the first power source is not restricted by the stopper 28 when it is connected to the first interface 16. After the first power source 15 is connected to the first interface 16, the stopper 28 extends radially outward from the first power source 15, and extends to face the second interface 18 and covers at least part of the second interface 18 along the installation direction of the second interface. In this way, the second interface 1816 is at least partially blocked. Thus, the second power source 15 is prevented from being connected to the second interface 1816.

[0065] When the second power supply 15 is connected to the second interface 18, the second power supply 15 forms a protrusion outside the second interface 1816. Therefore, when the first power supply 15 moves toward the first interface 16, the avoidance structure 19 also moves toward the first interface 16. Since the stopper 28 extends radially outward from the first power supply 15, when the stopper 28 abuts against the second power supply 15 protruding outside the second interface 18, the second power supply 15 will limit the first power supply 15 from continuing to move toward the first interface 16. A second avoidance space is enclosed between the second power supply 15, the first stopper surface 21 and the first interface 16. Due to the existence of the second avoidance space, the second power supply 15 cannot be connected to the second interface 18.

[0066] Furthermore, the connecting portion 26 is a longitudinally extending tube that can be sleeved. Figure 1 As shown, the tube body is sleeved on the cable plug 47 of the second power source 15. Of course, the connecting portion 26 is not limited to a tube body, and can also be other structures, such as the connecting portion 26 is a ring. This application does not make any provisions for this.

[0067] The stopper 28 is a stopper plate disposed on one side of the outer wall of the tube body, and the stopper 28 protrudes radially from the outer wall of the tube body. Figure 2 As shown, the stop plate has a first stop surface 21 and a second stop surface 23 that are opposite to each other.

[0068] In one embodiment, the avoidance structure 19 includes a linkage mechanism. The linkage mechanism includes a first stopper and a second stopper, and the first stopper can drive the second stopper to move, so that the linkage mechanism can be in a first state and a second state.

[0069] When the avoidance structure is in the first state, the first power supply is connected to the first interface 16, the first power supply triggers the first stopper, the first stopper drives the second stopper, and the second stopper prevents the second power supply 15 from connecting to the second interface 18; when the avoidance structure is in the second state, the second power supply 15 is connected to the second interface 18, the second power supply 15 triggers the second stopper, the second stopper drives the first stopper, and the first stopper prevents the first power supply from connecting to the first interface 16.

[0070] Furthermore, the first stopper and the second stopper may be connected via a four-bar mechanism to form a linkage mechanism.

[0071] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0072] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A handheld electric tool, characterized in that: It includes: A main body; the main body is provided with a first interface and a second interface; First power source; It is used to be connected to the first interface so as to provide power to the handheld power tool; Second power supply; It is used to be connected to the second interface so as to provide power to the handheld power tool; a avoidance structure having a first state and a second state, wherein in the first state, the avoidance structure allows the first power supply to access the first interface and prevents the second power supply from accessing the second interface; in the second state, the avoidance structure allows the second power supply to access the second interface and prevents the first power supply from accessing the first interface, and the avoidance structure is configured on one of the first power supply and the second power supply; The avoidance structure includes a connecting portion and a stopping portion; the connecting portion is used to connect to the first power source or the second power source, and the stopping portion is used to enable the avoidance structure to switch between the first state and the second state.

2. The handheld power tool according to claim 1, characterized in that: The connecting portion is connected to the second power source, In the first state, the stopper can abut against the first power source after the first power source is connected to the first interface, so as to form a first avoidance space between the stopper and the main body to limit the second power source from connecting to the second interface; In the second state, after the second power source is connected to the second interface, the stop portion can cover at least a portion of the first interface along the installation direction of the first interface to prevent the first power source from being connected to the first interface.

3. The handheld power tool according to claim 1, characterized in that: The connecting portion is connected to the first power source, In the first state, after the first power source is connected to the first interface, the stopper can cover at least a portion of the second interface along the installation direction of the second interface to prevent the second power source from being connected to the second interface; In the second state, the stopper can abut against the second power source after the second power source is connected to the second interface, so as to form a second avoidance space between the stopper and the main body to limit the first power source from connecting to the first interface.

4. The handheld power tool according to claim 1, characterized in that: The connecting portion is a longitudinally extending tube body that is sleeved with the first power source or the second power source; the stopper portion is arranged on the outer wall of the tube body, and the stopper portion protrudes radially from the outer wall of the tube body.

5. The handheld power tool according to claim 1, characterized in that: The first power source is a battery pack; the second power source is a backpack power source, including a backpack or a waist bag, and a battery pack installed on the backpack or the waist bag.

6. The handheld power tool according to claim 1, characterized in that: The handheld electric tool is a blowing device, the main body includes a blower housing, and the first interface and the second interface are both arranged on the blower housing.

7. The handheld power tool according to claim 6, characterized in that: The first interface has a first access terminal; the second interface has a second access terminal, and the first access terminal and the second access terminal extend toward the same side of the housing.

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