Adapter and electric tool system

Abstract

The present invention provides an adapter and a power tool system having the adapter. The adapter includes: an input port coupled to a single-voltage output interface provided on a single-voltage battery pack or a multi-voltage output interface provided on a multi-voltage battery pack to obtain the output voltage of the single-voltage battery pack or the multi-voltage battery pack; an output port electrically connected to the input port and coupled to the input interface provided on the power tool to output the output voltage to the power tool; and a switching mechanism that cooperates with the input port and is configured to: when the switching mechanism is in a first state, the input port is coupled to the single-voltage output interface; when the switching mechanism is in a second state, the input port is coupled to the multi-voltage output interface. Compared to the prior art, the adapter of the present invention can expand the application range of single-voltage battery packs and multi-voltage battery packs.

Description

Technical Field

[0001] The present invention relates to an adapter and an electric tool system having the adapter. Background Art

[0002] Generally speaking, different power tools have different rated operating voltages, such as handheld hair dryers and handheld electric drills. Therefore, manufacturers need to configure corresponding battery packs for each power tool. When users have multiple power tools, they must equip them with battery packs of various specifications. This not only increases the user's maintenance difficulty, but also requires a large amount of space to store the numerous battery packs. Furthermore, different power tools have different usage rates. For example, handheld hair dryers are typically used more frequently in the fall and less frequently in other seasons. Furthermore, different users use different power tools at different frequencies. For example, some users use hair dryers more frequently but power drills less frequently. This causes the battery pack paired with the power drill to remain idle for long periods of time, resulting in a waste of resources.

[0003] In order to solve the above problems, technicians have designed a battery pack with a multi-voltage output interface. The multi-voltage output interface has multiple coupling states, so that different voltages can be output through different coupling states, thereby achieving the purpose of pairing a battery pack with multiple power tools, thereby improving the utilization rate of the battery pack and reducing the difficulty of maintenance for users. However, the voltage input interface provided on traditional old power tools is matched with the output interface provided on the single-voltage battery pack, and the output interface provided on the single-voltage battery pack can only output one voltage. As a result, this multi-voltage output interface does not match the voltage input interface provided on traditional old power tools, making it impossible for existing old power tools to use the multi-voltage output battery pack. Secondly, the voltage input interface provided on the new power tool only matches the multi-voltage output interface, but does not match the output interface provided on the single-voltage battery pack, so that the new power tool cannot use the single-voltage battery pack.

[0004] In view of the above problems, it is necessary to provide an adapter to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide an adapter that can connect the multi-voltage output interface provided on a multi-voltage battery pack with the voltage input interface provided on an old power tool, or connect the single-voltage output interface provided on a single-voltage battery pack with the voltage input interface provided on a new power tool, so that the old power tool can use the multi-voltage battery pack and the new power tool can also use the single-voltage battery pack, thereby expanding the scope of use of the single-voltage battery pack and the multi-voltage battery pack.

[0006] To achieve the above-mentioned objectives, the present invention provides an adapter, comprising: an input port, the input port being coupled to a single-voltage output interface provided on a single-voltage battery pack or a multi-voltage output interface provided on a multi-voltage battery pack to obtain the output voltage of the single-voltage battery pack or the multi-voltage battery pack; an output port, the output port being electrically connected to the input port and coupled to an input interface provided on an electric tool to output the output voltage to the electric tool; and a switching mechanism, the switching mechanism cooperating with the input port and being configured such that: when the switching mechanism is in a first state, the input port is coupled to the single-voltage output interface; when the switching mechanism is in a second state, the input port is coupled to the multi-voltage output interface.

[0007] As a further improvement of the present invention, the input port includes a first input terminal, a second input terminal, a third input terminal and a fourth input terminal arranged in sequence; the switching mechanism includes a base, an elastic element cooperating with the base and a connecting terminal arranged on the base; when the elastic element undergoes elastic deformation, the connecting terminal is electrically disconnected from the second input terminal and the third input terminal; when the elastic element is reset, the connecting terminal is electrically connected to the second input terminal and the third input terminal.

[0008] As a further improvement of the present invention, the input port includes a first input terminal, a second input terminal, a third input terminal and a fourth input terminal arranged in sequence; the switching mechanism includes a base, an elastic element cooperating with the base and a connecting terminal arranged on the base; the connecting terminal includes a first connecting terminal and a second connecting terminal; when the elastic element undergoes elastic deformation, the first connecting terminal is electrically disconnected from the first input terminal and the second input terminal, and the second connecting terminal is electrically disconnected from the third input terminal and the fourth input terminal; when the elastic element is reset, the first connecting terminal is electrically connected to the first input terminal and the second input terminal, and the second connecting terminal is electrically connected to the third input terminal and the fourth input terminal.

[0009] As a further improvement of the present invention, when the elastic element undergoes elastic deformation, the base moves in the direction in which the input port is docked with the single-pressure output interface or in the vertical direction.

[0010] As a further improvement of the present invention, the input port includes a first input terminal, a second input terminal, a third input terminal and a fourth input terminal arranged in sequence; the switching mechanism includes a button partially located outside the shell and a switching terminal mounted on the button and cooperating with the input terminal group; when the button is pressed, the switching terminal presses against the second input terminal and the third input terminal under the action of the button so that the second input terminal and the third input terminal are electrically connected.

[0011] As a further improvement of the present invention, the input port includes a first input terminal, a second input terminal, a third input terminal and a fourth input terminal arranged in sequence; the switching mechanism includes a button partially located outside the shell and a switching terminal installed on the button and cooperating with the input terminal group; the switching terminal includes a first switching terminal and a second switching terminal; when the button is pressed, the first switching terminal presses against the first input terminal and the second input terminal under the action of the button so that the first input terminal and the second input terminal are electrically connected, and the second switching terminal presses against the third input terminal and the fourth input terminal under the action of the button so that the third input terminal and the fourth input terminal are electrically connected.

[0012] As a further improvement of the present invention, the button moves along the direction in which the input port and the multi-pressure output interface are docked or in the vertical direction.

[0013] As a further improvement of the present invention, the input port includes a first input terminal, a second input terminal, a third input terminal and a fourth input terminal arranged in sequence; a second contact terminal is provided at an end of the second input terminal away from the single-voltage output interface or the multi-voltage output interface; a third contact terminal is provided at an end of the third input terminal away from the single-voltage output interface or the multi-voltage output interface; the switching mechanism is provided with a giveway groove; the second contact terminal elastically supports the third contact terminal through the giveway groove and electrically connects the second input terminal and the third input terminal.

[0014] As a further improvement of the present invention, the switching mechanism is further provided with a first abutting portion; the first abutting portion is configured such that: when the first abutting portion is located between the second contact terminal and the third contact terminal, the second contact terminal elastically abuts the first input terminal, and the third contact terminal elastically abuts the fourth input terminal.

[0015] As a further improvement of the present invention, the switching mechanism is further provided with a second abutting portion; the second abutting portion is configured such that: when the second abutting portion is located between the second contact terminal and the third contact terminal, the second contact terminal is electrically disconnected from the first input terminal and the third input terminal, and the third contact terminal is electrically disconnected from the second input terminal and the fourth input terminal.

[0016] As a further improvement of the present invention, the switching mechanism moves vertically or in a docking direction between the input port and the single-pressure output interface.

[0017] As a further improvement of the present invention, the input port includes a fixed input terminal group and a movably set input signal terminal; when the input port is docked with the single-voltage output interface, the input signal terminal is configured to at least partially enter the adapter so that the input signal terminal is electrically disconnected from the single-voltage output interface, and the input terminal group is inserted into the single-voltage output interface; when the input port is docked with the multi-voltage output interface, the input terminal group and the input signal terminal are inserted into the multi-voltage output interface.

[0018] As a further improvement of the present invention, the input terminal group includes a first input terminal, a second input terminal, a third input terminal and a fourth input terminal arranged in sequence, and the input signal terminal is located between the second input terminal and the third input terminal; the output port includes an output terminal group and an output signal terminal; the output terminal group includes a first output terminal, a second output terminal, a third output terminal and a fourth output terminal arranged in sequence, and the output signal terminal is located between the second output terminal and the third output terminal; the first output terminal is connected to the first input terminal, the second output terminal is connected to the input signal terminal, the fourth output terminal is connected to the fourth input terminal, and the second input terminal is connected to the output signal terminal.

[0019] As a further improvement of the present invention, the input port further includes an input signal terminal, and the input signal terminal is arranged on the base.

[0020] The present invention also provides an electric tool system, comprising: a first electric tool, which can cooperate and work with a single-pressure battery pack; a second electric tool, which can cooperate and work with a multi-pressure battery pack; and the aforementioned adapter; the adapter can enable the first electric tool to cooperate and work with the multi-pressure battery pack; the adapter can enable the second electric tool to cooperate and work with the single-pressure battery pack.

[0021] The beneficial effect of the present invention is that the adapter of the present invention can connect the multi-voltage output interface provided on the multi-voltage battery pack with the voltage input interface provided on the old power tool, or connect the single-voltage output interface provided on the single-voltage battery pack with the voltage input interface provided on the new power tool, so that the old power tool can use the multi-voltage battery pack and the new power tool can also use the single-voltage battery pack, thereby expanding the scope of use of the single-voltage battery pack and the multi-voltage battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of a single-pressure output interface and a single-pressure input interface.

[0023] Figure 2 It is a structural diagram of a multi-voltage output interface and a first type of multi-voltage input interface.

[0024] Figure 3 It is a structural diagram of the multi-voltage output interface and the second multi-voltage input interface.

[0025] Figure 4 It is a three-dimensional schematic diagram of the adapter according to the first embodiment of the present invention.

[0026] Figure 5 yes Figure 4 A perspective schematic diagram of the adapter shown from another angle.

[0027] Figure 6 yes Figure 4 Schematic diagram of the matching of the input port and output port of the adapter shown.

[0028] Figure 7 It is a perspective schematic diagram of an adapter according to a second embodiment of the present invention.

[0029] Figure 8 yes Figure 7 A schematic diagram of the coordination of the input port, output port, and second switching mechanism of the adapter is shown.

[0030] Figure 9 is a schematic diagram of another embodiment of the second switching mechanism.

[0031] Figure 10 2 is a perspective schematic diagram of an adapter according to a third embodiment of the present invention.

[0032] Figure 11 yes Figure 10 Schematic diagram showing that the first abutting portion of the adapter is located between the second contact terminal and the third contact terminal.

[0033] Figure 12 yes Figure 10 Schematic diagram showing that the second abutting portion of the adapter is located between the second contact terminal and the third contact terminal.

[0034] Figure 13 yes Figure 10 Schematic diagram showing that the clearance groove of the adapter is located between the second contact terminal and the third contact terminal.

[0035] Figure 14 It is a three-dimensional schematic diagram of the third switching mechanism.

[0036] Figure 15 It is a three-dimensional schematic diagram of another embodiment of the third switching mechanism.

[0037] Figure 16 It is a three-dimensional schematic diagram of a power tool system. DETAILED DESCRIPTION

[0038] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Figure 1 The figure shows a schematic diagram of the structure of a single-voltage output interface 10' provided on a single-voltage battery pack and a single-voltage input interface 20' provided on an old power tool. The single-voltage output interface 10' includes a first output terminal 11', a second output terminal 12', a third output terminal 13', and a fourth output terminal 14'. The single-voltage input interface 20' includes a first input terminal 21', a second input terminal 22', a third input terminal 23', and a fourth input terminal 24'. The first output terminal 11' is a positive electrode, the second output terminal 12' is a signal terminal, the third output terminal 13' is a charging terminal, and the fourth output terminal 14' is a negative electrode; the first input terminal 21' is a positive electrode, the second input terminal 22' is a signal terminal, the third input terminal 23' is a charging terminal, and the fourth input terminal 24' is a negative electrode.

[0040] Figure 2The figure shows a schematic structural diagram of a multi-voltage output interface 10" provided on a multi-voltage battery pack and a multi-voltage input interface 20" provided on a new electric tool. It should be noted that the multi-voltage output interface described in the present application has at least two coupling states so that the multi-voltage output interface outputs different voltages under different coupling states. The multi-voltage input interface refers to an interface that matches the multi-voltage output interface to obtain the voltage output by the multi-voltage output interface. The multi-voltage output interface 10" includes a first output terminal 11" (positive pole), a second output terminal 12" (positive pole), an output signal terminal 15", a third output terminal 13" (negative pole) and a fourth output terminal 14" (negative pole) arranged in sequence. The multi-voltage input interface 20" includes a first input terminal 21" (positive pole), a second input terminal 22" (positive pole), an input signal terminal 25", a third input terminal 23" (negative pole) and a fourth input terminal 24" (negative pole). The second input terminal 22 ″ and the third input terminal 23 ″ are electrically connected as opposite polarity electrodes, so that the multi-voltage input interface 20 ″ obtains the series voltage output by the multi-voltage output interface 10 ″. Figure 3 The figure shows a schematic structural diagram of a multi-voltage output interface 10" provided on a multi-voltage battery pack and another multi-voltage input interface 30" provided on a new power tool. The multi-voltage input interface 30" includes a first input terminal 31" (positive pole), a second input terminal 32" (positive pole), an input signal terminal 35", a third input terminal 33" (negative pole) and a fourth input terminal 34" (negative pole). The first input terminal 31" and the second input terminal 32" are electrically connected to the same-pole electrodes, and the third input terminal 33" and the fourth input terminal 34" are electrically connected to the same-pole electrodes, so that the multi-voltage input interface 30" obtains the parallel voltage output by the multi-voltage output interface 10".

[0041] Due to their different structures, single-pressure battery packs are not compatible with new power tools, and dual-pressure battery packs are also not compatible with old power tools. This limits the scope of application of single-pressure battery packs and dual-pressure battery packs, resulting in a waste of resources.

[0042] To this end, the present invention discloses an adapter 100 to solve the problems that many old power tools in users' hands cannot be matched with dual-pressure battery packs, and many single-pressure battery packs cannot be matched with new power tools. Figure 4 、 Figure 5 as well as Figure 6 As shown, the adapter 100 includes a housing 10 , an input port 20 , an output port 30 matched with the input port 20 , and a first switching mechanism 40 .

[0043] See also Figure 4 、 Figure 5 as well as Figure 6As shown, the housing 10 includes a top wall 11, a bottom wall 12 disposed opposite the top wall 11, a front wall 13 adjacent to the input port 20 and the output port 30, a rear wall 14 disposed opposite the front wall 13, and side walls 15 located on both sides of the top wall 11. The top wall 11, bottom wall 12, front wall 13, rear wall 14, and side walls 15 collectively form a receiving cavity (not shown) to accommodate the input port 20, the output port 30, and the first switching mechanism 40. An output terminal slot 111 communicating with the receiving cavity is provided at one end of the top wall 11 adjacent to the front wall 13. An input terminal slot 131 communicating with the receiving cavity is provided between the front wall 13 and the bottom wall 12. The bottom wall 12 and side walls 15 collectively form an insertion slot 151 for slidingly inserting a single-voltage output interface provided on a single-voltage battery pack or a multi-voltage output interface provided on a multi-voltage battery pack. A slide rail 152 is provided on the side of the sidewall 15 facing the insertion slot 151 to guide the sliding insertion of a single-pressure battery pack or a multi-pressure battery pack. In this embodiment, the slide rail 152 is a groove. However, it is understood that the slide rail 152 may also be a protrusion, and the present invention does not limit the specific structure of the slide rail 152.

[0044] See also Figure 4 、 Figure 5 as well as Figure 6As shown, the input port 20 couples with a single-voltage output interface on a single-voltage battery pack or a multi-voltage output interface on a multi-voltage battery pack to obtain the output voltage of the single-voltage or multi-voltage battery pack. The input port 20 includes an input terminal group 21 fixedly mounted within the input terminal slot 131 and a removable input signal terminal 22. The input terminal group 21 includes a first input terminal 211, a second input terminal 212, a third input terminal 213, and a fourth input terminal 214, arranged in sequence. The input signal terminal 22 is located between the second input terminal 212 and the third input terminal 213. The input signal terminal 22 is configured so that when the input port 20 is connected to the single-voltage output interface, the input signal terminal 22 at least partially retracts into the adapter 100, disconnecting the input signal terminal 22 from the single-voltage output interface and inserting the input terminal group 22 into the single-voltage output interface. When the input port 20 is connected to the multi-voltage output interface, the input terminal group 21 and the input signal terminal 22 insert into the multi-voltage output interface. The output port 30 is electrically connected to the input port 20 and coupled to an input interface provided on the power tool to output the output voltage to the power tool. The output port 30 includes an output terminal group 31 and an output signal terminal 32 installed in the output terminal slot 111. The output terminal group 31 includes a first output terminal 311, a second output terminal 312, a third output terminal 313, and a fourth output terminal 314 arranged in sequence. The output signal terminal 32 is located between the second output terminal 312 and the third output terminal 313. The first input terminal 211 is electrically connected to the first output terminal 311, the second input terminal 212 is electrically connected to the output signal terminal 32, the fourth input terminal 214 is electrically connected to the fourth output terminal 314, and the input signal terminal 22 is electrically connected to the second output terminal 312.

[0045] See also Figure 6 as well as Figure 5As shown, the first switching mechanism 40 includes a base 41, an elastic element 42, and a connecting terminal 43. The input signal terminal 22 is mounted on the base 41; one end of the elastic element 42 is mounted on the base 41, and the other end is mounted on the housing 10; and the connecting terminal 43 is mounted on the base 41. When the input port 20 is connected to the single-pressure output interface provided on the single-pressure battery pack, and the output port 30 is connected to the dual-pressure input interface provided on the new power tool, the input signal terminal 22 is supported by the single-pressure battery pack and moves at least partially into the housing 10 along the direction of connection between the input port 20 and the single-pressure output interface. This causes the base 41 to move under the influence of the input signal terminal 22 or the single-pressure battery pack. At this time, the elastic element 42 undergoes elastic deformation, and the connecting terminal 43 is electrically disconnected from the second input terminal 212 and the third input terminal 213. The input terminal group 21 is then connected to the single-pressure output interface to obtain the output voltage of the single-pressure battery pack. At this time, the input signal terminal 22 is inoperative, and the first switching mechanism 40 is in the first state. The second input terminal 212 functions as a signal terminal and communicates with the new power tool via the output signal terminal 32. The first input terminal 211 and the fourth input terminal 214 transmit the output voltage of the single-voltage battery pack to the new power tool via the first output terminal 311 and the fourth output terminal 314. When the input port 20 is connected to the multi-voltage output interface of the dual-voltage battery pack, and the output port 30 is connected to the single-voltage input interface of the old power tool, the base 41 is reset by the elastic element 42, thereby resetting the connection terminal 43 and the input signal terminal 22, and the first switching mechanism 40 is in the second state. At this point, the connection terminal 43 is electrically connected to the second input terminal 212 and the third input terminal 213, allowing the input port 20 to receive the first voltage output by the multi-voltage battery pack. The input signal terminal 22 is operational and communicates with the old power tool via the second output terminal 312. The first input terminal 211 and the fourth input terminal 214 transmit the first voltage to the old power tool via the first output terminal 311 and the fourth output terminal 314. In this embodiment, the multi-voltage battery pack is a dual-voltage battery pack, and the first voltage is the series voltage output by the dual-voltage battery pack. In this case, the second input terminal 212 and the third input terminal 213 are electrically connected as opposite-polarity electrodes.

[0046] In this embodiment, the connection terminal 43 is used to electrically connect the second input terminal 212 and the third input terminal 213. However, it is understandable that in other embodiments, the connection terminal 43 may further include a first connection terminal (not shown) and a second connection terminal (not shown). The first connection terminal and the second connection terminal are configured such that when the elastic element 42 undergoes elastic deformation, the first connection terminal is electrically disconnected from the first input terminal 211 and the second input terminal 212, and the second connection terminal is electrically disconnected from the third input terminal 213 and the fourth input terminal 214. At this time, the first switching mechanism 40 is in the first state. When the elastic element 42 is reset, the first connection terminal is electrically connected to the first input terminal 211 and the second input terminal 212, and the second connection terminal is electrically connected to the third input terminal 213 and the fourth input terminal 214, so that the input port 20 obtains the second voltage output by the multi-voltage battery pack. At this time, the first switching mechanism 40 is in the second state. In this embodiment, the multi-voltage battery pack is a dual-voltage battery pack, and the second voltage is the parallel voltage output by the dual-voltage battery pack. At this time, the first input terminal 211 and the second input terminal 212 are electrically connected to the same-pole electrodes, and the third input terminal 213 and the fourth input terminal 214 are electrically connected to the same-pole electrodes.

[0047] In this embodiment, when the elastic element 42 is elastically deformed, the base 41 is arranged to be aligned with the docking direction between the input port 20 and the single pressure output interface (ie, direction BB, as shown in FIG. Figure 5 However, it is understood that, in other embodiments, the base 41 can also be configured to move in the vertical direction (ie, direction CC, as shown). Figure 5 When the input port 20 is docked with the single-voltage output interface, the base 41 is vertically retracted into the adapter 100 under the action of the input signal terminal 22 or the single-voltage battery pack, so that the input signal terminal 22 is electrically disconnected from the single-voltage output interface.

[0048] Figure 7 The adapter 200 of the second embodiment of the present invention is shown. Figure 7 as well as Figure 8As shown, the structure of the adapter 200 is similar to that of the adapter 100, including a housing 10, an input port 20, an output port 30, a yielding mechanism 50, and a second switching mechanism 60. The yielding mechanism 50 includes a base 51 and an elastic element 52 that cooperates with the base 51. The input signal terminal 22 is mounted on the base 51. One end of the elastic element 52 is mounted on the base 51, and the other end is mounted on the housing 10. When the input port 20 is connected to the single-pressure output interface provided on the single-pressure battery pack, the input signal terminal 22 at least partially enters the housing 10 under the support of the single-pressure battery pack, thereby disconnecting the input signal terminal 22 from the single-pressure output interface. At this time, the base 51 moves under the action of the input signal terminal 22 or the single-pressure battery pack, causing the elastic element 52 to undergo elastic deformation. The second switching mechanism 60 includes a button 61 partially located outside the housing 10, and a switching terminal 62 mounted on the button 61 and mating with the input terminal assembly 21. When the input port 20 is docked with the multi-voltage output interface provided on the multi-voltage battery pack and the button 61 is pressed, the switching terminal 62, under the action of the button 61, abuts against the second input terminal 212 and the third input terminal 213, electrically connecting the second and third input terminals 212, 213. This allows the input port 20 to receive the first voltage output by the multi-voltage battery pack, at which point the second switching mechanism 60 is in the second state. In this embodiment, the multi-voltage battery pack is a dual-voltage battery pack, and the first voltage is the series voltage output by the dual-voltage battery pack. In this case, the second input terminal 212 and the third input terminal 213 are electrically connected as opposite-polarity electrodes.

[0049] Figure 9The figure shows a second switching mechanism 70 of the second embodiment of the adapter 200. The second switching mechanism 70 includes a button 71, a first switching terminal 72 mounted on the button 71, and a second switching terminal 73. When the input port 20 is docked with the multi-voltage output interface provided on the multi-voltage battery pack and the button 71 is pressed, the first switching terminal 72, under the action of the button 71, abuts against the first input terminal 211 and the second input terminal 212, thereby electrically connecting the first input terminal 211 and the second input terminal 212. The second switching terminal 73, under the action of the button 71, abuts against the third input terminal 213 and the fourth input terminal 214, thereby electrically connecting the third input terminal 213 and the fourth input terminal 214. This allows the input port 20 to receive the second voltage output by the multi-voltage battery pack. At this time, the second switching mechanism 70 is in the second state. In this embodiment, the multi-voltage battery pack is a dual-voltage battery pack, and the second voltage is the parallel voltage output by the dual-voltage battery pack. At this time, the first input terminal 211 and the second input terminal 212 are electrically connected to the same-pole electrodes, and the third input terminal 213 and the fourth input terminal 214 are electrically connected to the same-pole electrodes.

[0050] In the aforementioned embodiment, the buttons 61 and 71 of the switching mechanisms 60 and 70 are configured to move the switching terminal 62 or the first switching terminal 72 and the second switching terminal 73 along the docking direction between the input port 20 and the dual-pressure output interface. However, it is understood that in other embodiments, the buttons 61 and 71 can also be configured to move the switching terminal 62 or the first switching terminal 72 and the second switching terminal 73 along the vertical direction (i.e., direction CC, such as Figure 5 shown) move.

[0051] Figure 10 The adapter 300 of the third embodiment of the present invention is shown. Figure 10 as well as Figure 11As shown, the adapter 300 includes a housing 10, an input port 80, an output port 30, a yield mechanism 50, and a third switching mechanism 90. The input port 80 includes an input terminal group 81 and an input signal terminal 82. The input terminal group 81 includes a first input terminal 811, a second input terminal 812, a third input terminal 813, and a fourth input terminal 814, which are arranged in sequence. The input signal terminal 82 is located between the second input terminal 812 and the third input terminal 813. The first input terminal 811 is electrically connected to the first output terminal 311, the second input terminal 812 is electrically connected to the output signal terminal 32, the fourth input terminal 814 is electrically connected to the fourth output terminal 314, and the second output terminal 312 is electrically connected to the input signal terminal 82. The first input terminal 811 is provided with a first contact terminal 8111 at one end away from the single-voltage output interface or the multi-voltage output interface, the second input terminal 812 is provided with a second contact terminal 8121 at one end away from the single-voltage output interface, the third input terminal 813 is provided with a third contact terminal 8131 at one end away from the single-voltage output interface, and the fourth input terminal 814 is provided with a fourth contact terminal 8141 at one end away from the single-voltage output interface. Figure 11 as well as Figure 14 As shown, the third switching mechanism 90 includes an operating portion 91 located outside the housing 10 and a supporting portion 92 located inside the housing 10. The supporting portion 92 includes a first supporting portion 921, a second supporting portion 922, and a clearance groove 923 located between the first supporting portion 921 and the second supporting portion 922. The thickness of the first supporting portion 921 is greater than that of the second supporting portion 922. When the operating portion 91 is pushed so that the first supporting portion 921 is located between the second contact terminal 8121 and the third contact terminal 8131, the third switching mechanism 90 is in the second state. The second contact terminal 8121 elastically abuts the first contact terminal 8111 under the action of the first supporting portion 921, and the third contact terminal 8131 elastically abuts the fourth contact terminal 8141 under the action of the first supporting portion 921, thereby allowing the input port 80 to obtain the second voltage output by the multi-voltage battery pack. In this embodiment, the multi-voltage battery pack is a dual-voltage battery pack, and the second voltage is the parallel voltage output by the dual-voltage battery pack. At this time, the first input terminal 811 and the second input terminal 812 are electrically connected to the same polarity electrodes, and the third input terminal 813 and the fourth input terminal 814 are electrically connected to the same polarity electrodes. Figure 12As shown, when the operating portion 91 is pushed so that the second abutting portion 922 is located between the second contact terminal 8121 and the third contact terminal 8131, the third switching mechanism 90 is in the first state, the second contact terminal 8121 is electrically disconnected from the first contact terminal 8111 and the third contact terminal 8131, and the third contact terminal 8131 is electrically disconnected from the second contact terminal 8121 and the fourth contact terminal 8141; at this time, the input port 90 can be connected to the single-voltage output interface provided on the single-voltage battery pack. Figure 13 As shown, when the operating portion 91 is pushed so that the clearance slot 923 is located between the second contact terminal 8121 and the third contact terminal 8131, the third switching mechanism 90 is in the second state. The second contact terminal 8121 and the third contact terminal 8131 are elastically abutted against each other through the clearance slot 923, thereby allowing the input port 80 to receive the first voltage output by the multi-voltage battery pack. In this embodiment, the second state has two conditions: one outputting the first voltage and the other outputting the second voltage. In this embodiment, the multi-voltage battery pack is a dual-voltage battery pack, and the first voltage is the series voltage output by the dual-voltage battery pack. In this case, the second input terminal 812 and the third input terminal 813 are electrically connected as opposite-polarity electrodes.

[0052] In this embodiment, the first abutting portion 921, the second abutting portion 922 and the clearance groove 923 are arranged along the vertical direction, and the operating portion 91 moves vertically. However, it is understandable that the first abutting portion 921, the second abutting portion 922 and the clearance groove 923 can also be arranged along the docking direction of the input port 80 and the single pressure output interface, such as Figure 15 At this time, the first abutting portion 921, the second abutting portion 922, and the clearance groove 923 move along the docking direction of the input port 80 and the single pressure output interface under the action of the operating portion 91.

[0053] See also Figure 16 As shown, the present invention further discloses a tool system 400, comprising a battery pack 401, a power tool 402, and an adapter 403 connecting the battery pack 401 and the power tool 402. The adapter 403 is the adapter 100, the adapter 200, or the adapter 300. When the battery pack 401 is a single-voltage battery pack, the power tool 402 is a power tool equipped with a multi-voltage input interface; when the battery pack 401 is a multi-voltage battery pack, the power tool 402 is a power tool equipped with a single-voltage input interface.

[0054] Compared with the existing technology, the adapters 100, 200, and 300 of the present invention can connect the multi-voltage output interface set on the multi-voltage battery pack to the old power tool, or connect the single-voltage output interface set on the single-voltage battery pack to the voltage input interface set on the new power tool, so that the old power tools can use the multi-voltage battery pack and the new power tools can also use the single-voltage battery pack, thereby expanding the scope of use of the single-voltage battery pack and the multi-voltage battery pack.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An adapter, characterized in that: include: an input port coupled to a single-voltage output interface provided on a single-voltage battery pack or a multi-voltage output interface provided on a multi-voltage battery pack to obtain an output voltage of the single-voltage battery pack or the multi-voltage battery pack; an output port, the output port being electrically connected to the input port and coupled to an input interface provided on the power tool to output the output voltage to the power tool; as well as a switching mechanism, the switching mechanism cooperating with the input port and configured such that: when the switching mechanism is in a first state, the input port is coupled to the single-voltage output interface; and when the switching mechanism is in a second state, the input port is coupled to the multi-voltage output interface; The input port includes a fixed input terminal group and a movable input signal terminal; when the input port is connected to the single-voltage output interface, the input signal terminal is configured to at least partially enter the adapter so that the input signal terminal and the single-voltage output interface are electrically disconnected, and the input terminal group is inserted into the single-voltage output interface; when the input port is connected to the multi-voltage output interface, the input terminal group and the input signal terminal are inserted into the multi-voltage output interface; The input terminal group includes a first input terminal, a second input terminal, a third input terminal and a fourth input terminal arranged in sequence; When the switching mechanism is in the first state, the switching mechanism electrically disconnects the second input terminal from the first input terminal and / or the third input terminal, and electrically disconnects the third input terminal from the second input terminal and / or the fourth input terminal; when the switching mechanism is in the second state, the switching mechanism electrically connects the second input terminal to the third input terminal; or, the first input terminal is electrically connected to the second input terminal, and the third input terminal is electrically connected to the fourth input terminal.

2. The adapter according to claim 1, wherein: The switching mechanism includes a base, an elastic element cooperating with the base, and a connecting terminal arranged on the base; when the elastic element undergoes elastic deformation, the connecting terminal is electrically disconnected from the second input terminal and the third input terminal; when the elastic element is reset, the connecting terminal is electrically connected to the second input terminal and the third input terminal.

3. The adapter according to claim 1, wherein: The switching mechanism includes a base, an elastic element cooperating with the base, and connecting terminals arranged on the base; the connecting terminals include a first connecting terminal and a second connecting terminal; when the elastic element undergoes elastic deformation, the first connecting terminal is electrically disconnected from the first input terminal and the second input terminal, and the second connecting terminal is electrically disconnected from the third input terminal and the fourth input terminal; when the elastic element is reset, the first connecting terminal is electrically connected to the first input terminal and the second input terminal, and the second connecting terminal is electrically connected to the third input terminal and the fourth input terminal.

4. The adapter according to claim 2 or 3, wherein: When the elastic element undergoes elastic deformation, the base moves in the direction in which the input port is docked with the single-pressure output interface or in the vertical direction.

5. The adapter according to claim 1, wherein: The switching mechanism includes a button partially located outside the housing of the adapter and a switching terminal mounted on the button and cooperating with the input terminal group; When the button is pressed, the switch terminal abuts against the second input terminal and the third input terminal under the action of the button so that the second input terminal and the third input terminal are electrically connected.

6. The adapter according to claim 1, wherein: The switching mechanism includes a button partially located outside the housing of the adapter and a switching terminal mounted on the button and cooperating with the input terminal group; the switching terminal includes a first switching terminal and a second switching terminal; When the button is pressed, the first switching terminal abuts against the first input terminal and the second input terminal under the action of the button so that the first input terminal and the second input terminal are electrically connected, and the second switching terminal abuts against the third input terminal and the fourth input terminal under the action of the button so that the third input terminal and the fourth input terminal are electrically connected.

7. The adapter according to claim 5 or 6, wherein: The button moves along the direction in which the input port and the multi-pressure output interface are docked or in the vertical direction.

8. The adapter according to claim 1, wherein: A second contact terminal is provided at one end of the second input terminal away from the single-voltage output interface or the multi-voltage output interface; a third contact terminal is provided at one end of the third input terminal away from the single-voltage output interface or the multi-voltage output interface; the switching mechanism is provided with a clearance groove; the second contact terminal elastically abuts against the third contact terminal through the clearance groove, thereby electrically connecting the second input terminal and the third input terminal.

9. The adapter according to claim 8, wherein: The switching mechanism is further provided with a first abutting portion; the first abutting portion is configured such that when the first abutting portion is located between the second contact terminal and the third contact terminal, the second contact terminal elastically abuts the first input terminal, and the third contact terminal elastically abuts the fourth input terminal.

10. The adapter according to claim 8, wherein: The switching mechanism is also provided with a second abutting portion; the second abutting portion is configured so that: when the second abutting portion is located between the second contact terminal and the third contact terminal, the second contact terminal is electrically disconnected from the first input terminal and the third input terminal, and the third contact terminal is electrically disconnected from the second input terminal and the fourth input terminal.

11. The adapter according to claim 8, 9 or 10, wherein: The switching mechanism moves vertically or in a docking direction between the input port and the single-pressure output interface.

12. The adapter according to claim 1, wherein: The input signal terminal is located between the second input terminal and the third input terminal; the output port includes an output terminal group and an output signal terminal; the output terminal group includes a first output terminal, a second output terminal, a third output terminal and a fourth output terminal arranged in sequence, and the output signal terminal is located between the second output terminal and the third output terminal; the first output terminal is connected to the first input terminal, the second output terminal is connected to the input signal terminal, the fourth output terminal is connected to the fourth input terminal, and the second input terminal is connected to the output signal terminal.

13. The adapter according to claim 2 or 3, wherein: The input port further includes an input signal terminal, and the input signal terminal is arranged on the base.

14. A power tool system, characterized in that: include: a first electric tool capable of cooperating with and working with a single-pressure battery pack; a second power tool capable of cooperating with and operating with a multi-voltage battery pack; as well as The adapter according to any one of claims 1 to 13; The adapter enables the first power tool to cooperate and work with the multi-voltage battery pack; The adapter enables the second electric tool to cooperate and work with the single-pressure battery pack.

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