Lock for rechargeable battery

Abstract

A rechargeable battery for supplying power to a power tool. The rechargeable battery comprises a locking device for releasably connecting the rechargeable battery to the power tool, wherein the locking device comprises at least one first lever element and a second lever element hingedly connected together such that the locking device is reversibly movable from a locked position to a released position, wherein in the locked position the rechargeable battery is securely connected to the power tool and in the released position the rechargeable battery is removable from the power tool.

Description

Technical Field

[0001] The present invention relates to a system comprising a power tool and a rechargeable battery for supplying electrical power to the power tool.

[0002] Furthermore, the present invention relates to a rechargeable battery for supplying electrical power to power tools. Background Technology

[0003] Systems consisting of power tools and rechargeable batteries as energy suppliers are widely known in the prior art. Furthermore, rechargeable batteries for supplying electrical power to power tools are also widely known in the prior art.

[0004] Typically, a rechargeable battery used to supply power to a power tool is releasably connected to the tool via an interface. The interface has mechanical and electrical components. The mechanical components are used to mechanically attach the rechargeable battery to the power tool in a form-fit connection. The electrical components are used to transfer electrical energy from the rechargeable battery to the power tool. The mechanical components are typically a rail system that allows the rechargeable battery to be pushed onto the power tool. The electrical components are typically configured as plug contacts, i.e., a plug and a socket, so that the plug on the rechargeable battery can be inserted into a corresponding socket on the power tool. When the rechargeable battery is pushed onto the power tool by means of the rails, the plug of the rechargeable battery connects to the socket of the power tool.

[0005] Significant mechanical stresses in the form of vibration or impact may occur during the use of power tools with connected rechargeable batteries. In particular, when the power tool is constructed as a hammer drill or chisel, relatively strong vibrations may occur in most applications. Because the power tool and the rechargeable battery have different masses, they vibrate differently from each other. This results in relative movement between the power tool and the rechargeable battery, potentially damaging both the mechanical and electrical connections at the interface between them. Specifically, the plug-and-socket connection between the rechargeable battery and the power tool is sensitive to these relative movements or vibrations. Summary of the Invention

[0006] Therefore, the object of the present invention is to provide a system comprising a power tool and a rechargeable battery for supplying electrical energy to the power tool, which at least solves the above-mentioned problems, and a rechargeable battery for supplying electrical energy to the power tool.

[0007] This objective is achieved in particular by a system comprising a power tool and a rechargeable battery for supplying electrical power to the power tool.

[0008] According to the invention, it is proposed that the rechargeable battery comprises a locking device for releasably connecting the rechargeable battery to the power tool, wherein the locking device comprises at least one first lever element and a second lever element which are connected together in a hinged manner, such that the locking device can be reversibly moved from a locked position to a released position, wherein in the locked position the rechargeable battery is firmly connected to the power tool and in the released position the rechargeable battery can be removed from the power tool.

[0009] Thus, a better connection between the power tool and the rechargeable battery can be achieved in the assembled state, so that a relative movement between the power tool and the rechargeable battery is reduced. In other words: a play between the power tool and the rechargeable battery can be eliminated.

[0010] The second lever element can be configured in an elastic manner. Thus, a pre-load can be generated in the locking device.

[0011] According to an advantageous embodiment of the invention, the rechargeable battery can comprise a third lever element for reversibly actuating the second lever element from the first position to the second position.

[0012] This can make it easier to manipulate the locking device for releasably connecting the rechargeable battery to the power tool.

[0013] According to an advantageous embodiment of the invention, the second lever element can be at least partially configured in an elastic manner.

[0014] Thus, the locking device can generate a pre-load for a higher contact pressure of the rechargeable battery on the power tool.

[0015] According to an advantageous embodiment of the invention, the locking device can be configured as a toggle mechanism.

[0016] Thus, the locking device can also be implemented in a simple manner.

[0017] According to an advantageous embodiment of the invention, at least one elastic stop element can be present between the rechargeable battery and the power tool, wherein the at least one elastic stop element is positioned opposite the locking device.

[0018] Furthermore, the object is achieved by a rechargeable battery for supplying a power tool with electrical energy.

[0019] According to the invention, it is proposed that the rechargeable battery comprises a locking device for releasably connecting the rechargeable battery to the power tool, wherein the locking device comprises at least one first lever element and a second lever element which are connected together in a hinged manner, such that the locking device can be reversibly moved from a locked position to a released position, wherein in the locked position the rechargeable battery is firmly connected to the power tool and in the released position the rechargeable battery can be removed from the power tool.

[0020] Thus, a better connection between the power tool and the rechargeable battery can be achieved in the assembled state, thereby reducing the relative movement between the power tool and the rechargeable battery. In other words: play between the power tool and the rechargeable battery can be eliminated.

[0021] Further advantages will become apparent from the following description of the drawings. Various exemplary embodiments of the invention are illustrated in the drawings.

[0022] The drawings, specification, and claims may contain many combinations of features. The skilled person will also conveniently consider these features individually and combine them to produce useful further combinations. BRIEF DESCRIPTION OF DRAWINGS

[0023] In the drawings:

[0024] Figure 1 a rear perspective view of the power tool and the rechargeable battery in the assembled state is shown;

[0025] Figure 2 a rear perspective view of the power tool and the rechargeable battery in the disassembled state is shown;

[0026] Figure 3a a perspective detail view of the rechargeable battery interface of the power tool is shown;

[0027] Figure 3b a perspective cross-sectional view of the rechargeable battery interface of the power tool is shown;

[0028] Figure 4 a cross-sectional side view of the rechargeable battery is shown, wherein the locking device is in a first state;

[0029] Figure 5 a perspective view of the rechargeable battery is shown, wherein the locking device is in a first state;

[0030] Figure 6 a cross-sectional side view of the rechargeable battery is shown, wherein the locking device is in a second state;

[0031] Figure 7 a perspective view of the rechargeable battery is shown, wherein the locking device is in a second state;

[0032] Figure 8 a cross-sectional side view of the rechargeable battery is shown, wherein the locking device is in the third state;

[0033] Figure 9 a perspective view of the rechargeable battery is shown, wherein the locking device is in the third state;

[0034] Figure 10 a cross-sectional side view of the rechargeable battery is shown, wherein the locking device is in the fourth state;

[0035] Figure 11 a perspective view of the rechargeable battery is shown, wherein the locking device is in the fourth state;

[0036] Figure 12 a cross-sectional side view of the rechargeable battery is shown, wherein the locking device is in the fifth state; and

[0037] Figure 13 a perspective view of the rechargeable battery is shown, wherein the locking device is in the fifth state. DETAILED DESCRIPTION

[0038] Figure 1 a system 1 comprising a power tool 2 in a first state and a rechargeable battery 3 is shown, wherein the rechargeable battery 3 is connected to the power tool 2. The rechargeable battery 3 is used to supply the power tool 2 with electrical energy.

[0039] The rechargeable battery 3 can also be referred to as a battery pack or a battery.

[0040] In Figure 2 the power tool 2 and the rechargeable battery 3 are shown in a second state, wherein the rechargeable battery has been removed or pulled out of the power tool 2 in the direction A.

[0041] The power tool 2 is configured in the form of a hammer drill, for example. Alternatively, the power tool 2 can be configured in the form of a grinder, a saw, a chisel hammer, etc.

[0042] Figure 1 The power tool 2 in

[0043] The housing 4 of the power tool 2 has a front end 4a, a rear end 4b, a top side 4c and a bottom side 4d.

[0044] A drive in the form of an electric motor, a transmission, an impact mechanism and a control device are positioned in the interior of the housing 4 of the power tool 2. The drive, the transmission, the impact mechanism and the control device are not shown in the figures.

[0045] The tool assembly 5 is positioned at the front end 4a of the housing 4 of the power tool 2 and serves to receive and hold a tool. In the present exemplary embodiment, the tool is a drill bit, as the power tool 2 is configured as a hammer drill. The tool is not shown in the figures.

[0046] The main handle 6 is positioned at the rear end 4b of the housing 4 of the power tool 2 and is used by the user to hold and guide the power tool 2. The user of the power tool 2 is not shown in the figures.

[0047] The auxiliary handle 7 is likewise positioned at the front end 4a of the housing 4 of the power tool 2 and is used by the user, in addition to the main handle 6, to hold and guide the power tool 2. From Figure 1 and Figure 2 It can be clearly seen that the auxiliary handle 7 is arranged in front of the tool assembly 5 in the direction of the arrow A. The auxiliary handle 7 is releasably connected to the housing 4 of the power tool 2.

[0048] From Figure 1 and Figure 2 It can likewise be clearly seen that the rechargeable battery interface 8 is positioned at the rear end 4b of the housing 4 of the power tool 2. The rechargeable battery interface 8 is arranged below the main handle 6 in the direction of the arrow C and serves to receive and hold the rechargeable battery 3.

[0049] The rechargeable battery interface 8 essentially comprises mechanical connection means and electrical connection means. The mechanical connection means serve to attach the rechargeable battery 3 to the power tool 2 in a form-fit manner on the power tool side. In contrast, the electrical connection means serve to electrically attach the rechargeable battery 3 to the power tool 2 on the power tool side, such that electrical energy can be transferred from the rechargeable battery 3 to the power tool 2.

[0050] As Figure 3a and Figure 3b indicated, the mechanical connection means are configured in the form of essentially two grooves 9 and a first recess 10a and a second recess 10b. The grooves 9 can also be referred to as recesses or channels. As described below, the grooves 9 serve to receive corresponding tracks 11 on the rechargeable battery 3. The first recess 10a and the second recess 10b serve to receive lever elements of the rechargeable battery 3, such that a form-fit and force-fit connection can be formed between the rechargeable battery 3 and the power tool 2. As Figure 4 indicated, the first recess 10a and the second recess 10b have an essentially triangular cross-sectional area with an undercut in the direction of the arrow A.

[0051] As Figure 3a and Figure 3b indicated, the electrical connection means essentially consist of four plugs 12. The four plugs 12 serve to be plugged into corresponding sockets 13 on the rechargeable battery 3, thereby establishing an electrical connection between the rechargeable battery 3 and the power tool 2.

[0052] As shown in the drawing, the rechargeable battery 3 comprises a rechargeable battery housing 14 having a front side 14a, a rear side 14b, a top side 14c and a bottom side 14d.

[0053] A number of energy storage cells 15a and a control device 15b are positioned in the interior of the rechargeable battery housing 14. The energy storage cells 15a serve to receive, store and output electrical energy. In the present exemplary embodiment, the energy storage cells 15a are based on lithium-ion technology.

[0054] A power tool interface 16 is positioned on the top side 14c of the rechargeable battery housing 14. The power tool interface 16 likewise essentially comprises mechanical connection means and electrical connection means. The mechanical connection means serve to attach the rechargeable battery 3 to the power tool 2 in a form-fit manner on the rechargeable battery side. In contrast, the electrical connection means serve to electrically attach the rechargeable battery 3 to the power tool 2 on the rechargeable battery side, such that electrical energy can be transferred from the rechargeable battery 3 to the power tool 2. The electrical connection means are arranged on the top side 14c of the rechargeable battery housing 14 and in the vicinity of the front side 14a.

[0055] As indicated in the drawing, in particular Figure 2 , the mechanical connection means are configured in the form of essentially two rails 11. The rails 11 are designed here such that they can be received in corresponding grooves 9 of the rechargeable battery interface 8 on the power tool 2.

[0056] As indicated in the drawing, in particular Figure 2 , the electrical connection means of the power tool interface 16 of the rechargeable battery 3 essentially consist of four sockets 13. The four sockets 13 serve to receive corresponding plugs 11 on the mechanical connection means of the rechargeable battery interface 8 of the power tool 2, thereby establishing an electrical connection between the rechargeable battery 3 and the power tool 2.

[0057] Furthermore, an elastic stop element 17 is provided at the rechargeable battery interface 8 of the power tool 2. As can be most clearly apparent from the drawing, Figure 4 , the elastic stop element 17 is positioned such that it can exert its elastic spring force between the power tool interface 16 and the rechargeable battery interface 8.

[0058] As is likewise apparent from the drawing, the rechargeable battery 3 furthermore comprises a locking device 18. The locking device 18 serves to releasably connect the rechargeable battery 3 to the power tool 2 and extends from the top side 14c to the rear side 14b of the rechargeable battery housing 14.

[0059] The locking element 18 essentially comprises a first lever element 19, a second lever element 20, a third lever element 21, a first rotary joint 22, a second rotary joint 23, a third rotary joint 24 and a fourth rotary joint 25.

[0060] The first lever element 19 comprises an elongated base body 26 having a first end 26a and a second end 26b. The first lever element 19 can be referred to as a locking element. The first end 26a of the base body 26 is rotatably positioned on the top side 14c of the rechargeable battery housing 14 by means of a first rotational joint 22. A first hook-like element 27a and a second hook-like element 27b are provided at the second end 26b of the base body 26, each extending substantially at an obtuse angle to the longitudinal orientation of the base body 26. The first hook-like element 27a and the second hook-like element 27b are designed to be introduced into corresponding recesses in the rechargeable battery interface 8 of the power tool 2. The shape of the hook-like elements 27a, 27b substantially corresponds to the shape of the recesses 10a, 10b.

[0061] Furthermore, a second rotational joint 23 is present at the first end 26a of the base body 26. The second rotational joint 23 is positioned obliquely above the first rotational joint 22 in the direction of the arrow D. As described in more detail below, the first rotational joint 22 and the second rotational joint 23 are arranged relative to one another such that a concentric rotational movement of the first lever element 19 occurs as a result of a pivoting of the first lever element 19 about the pivot point of the second rotational joint 23.

[0062] The second lever element 20 substantially comprises a curved base body 28. The second lever element 20 can be referred to as a connecting element. The second lever element 20 connects the first lever element 19 to the third lever element 21. The curved base body 28 can also be referred to as an arc-shaped base body. The curved base body 28 is configured such that the second lever element 20 has a certain spring function or spring action. To this end, the curved base body 28 has a length-to-thickness ratio and is made of a material that gives the second lever element 20 a certain flexibility or elasticity. As is apparent from the figures, the profile of the curved base body 28 substantially follows the curved transition from the top side 14c to the rear side 14b of the rechargeable battery housing 14. The curved transition from the top side 14c to the rear side 14b of the rechargeable battery housing 14 can also be referred to as an arc, a rounded side edge or a rounding. The curved base body 28 is configured in this way in order to be applied to the top side 14c and the rear side 14b of the rechargeable battery housing 14 in a space-saving manner.

[0063] The first end 20a of the second lever element 20 is rotatably connected to the first lever element 19 by means of the second rotational joint 23, such that the first lever element 19 and the second lever element 20 can be pivoted relative to one another about the pivot point of the second rotational joint 23.

[0064] A third rotational joint 24 is provided at the second end 20b of the second lever element 20.

[0065] The third lever element 21 has a flat, elongated base 29, which includes a first end 29a and a second end 29b. The third lever element 21 may also be referred to as an operating element. The third lever element 21, configured as an operating element, is used by the user of the locking device 18 as an actuating element to operate the locking device 18.

[0066] According to an alternative embodiment, the locking device 18 may also be configured without the third lever element 21. In this embodiment of the locking device 18, the second lever element 20 serves as an actuating element that a user can use to operate the locking device 18. The first end 29a of the third lever element 21 is connected to the rear side 14b of the rechargeable battery housing 14 via a third rotary joint 24, such that the third lever element 21 can pivot or rotate relative to the rechargeable battery housing 14 about the third rotary joint 24. A fourth rotary joint 25 is positioned near the first end 29a of the third lever element 21. Figure 4 It can be clearly seen that the fourth rotary joint 25 is arranged above the third rotary joint 24 along the direction of arrow D. The second end 20b of the second lever element 20 is rotatably connected to the first end 29a of the third lever element 21 via the fourth rotary joint 25, so that the second lever element 20 and the third lever element 21 can pivot or rotate relative to each other.

[0067] As mentioned above, the locking device 18 is used to releasably connect the rechargeable battery 3 to the power tool 2. For this purpose, the locking device 18 can be reversibly moved from a locked position to a released position. In the locked position, the power tool interface 16 of the rechargeable battery 3 is relatively securely connected to the rechargeable battery interface 8 of the power tool 2 by means of the locking device 18. This connection is at least secure enough that even vibrations generated during the use of the power tool 2 will not cause relative movement between the power tool 2 and the connected rechargeable battery 3.

[0068] The main functions of locking device 18 are as follows: Figures 4 to 13 As shown in the image. Specifically, Figures 4 to 13 This illustrates how the locking device 18 moves from the released position to the locked position. In the locked position, the rechargeable battery 3 and the power tool 2 are connected together (see [reference]). Figure 1 Furthermore, in the release position, the rechargeable battery 3 and the power tool 2 can be separated from each other (see [link]). Figure 2 ).

[0069] exist Figure 4 and Figure 5The image shows a rechargeable battery 3 with the locking device 18 in a first position. This first position is a release position, in which the rechargeable battery 3 can be removed from the power tool 2 or pulled out of the power tool 2 in the direction of arrow A. In the release position, the rechargeable battery 3 is not connected to the power tool 2 in a form-fit or force-fit manner. The second end 29b of the third lever element 21 has been moved as far as possible in the direction of arrow D and is therefore in its highest position. Figure 4 It is evident that the resilient stop element 17 is not compressed or is still relaxed, so the resilient stop element 17 does not apply spring force to the rechargeable battery 3, or only applies minimal spring force.

[0070] exist Figure 6 and Figure 7 The image shows a rechargeable battery 3 with the locking device 18 in the second position. The second end 29b of the third lever element 21 has been moved downward (i.e., pushed) a certain distance in the direction of arrow C. The first end 29a of the third lever element 21 rotates about the pivot point of the third rotary joint 24 relative to the rear side 14b of the rechargeable battery housing 14.

[0071] The first end 20a of the second lever element 20 moves in the direction of arrow A, and the first lever element 19 rotates about the pivot point of the first rotary joint 22. The second rotary joint 23 compensates for the relative movement of the first lever element 19 and the second lever element 20, because the first lever element 19 rotates concentrically about the pivot point of the second rotary joint 23. Figure 6 It is evident that the first and second hook-shaped elements move in the direction of arrow D due to the rotational movement of the first lever element and engage in the two recesses 10a and 10b of the rechargeable battery interface 8 of the power tool 2. Simultaneously, the second end 20b of the second lever element 20 moves in the direction of arrow C. As the third lever element 21 rotates about the pivot point of the third rotary joint 24, the fourth rotary joint 25 rotates concentrically about the pivot point of the third rotary joint 24.

[0072] from Figure 6 It is evident that the rechargeable battery 3 moves in the direction of arrow B due to the movement of the locking device 18, causing the elastic stop element 17 to be compressed. A certain spring force from the elastic stop element 17 acts on the rechargeable battery 3.

[0073] exist Figure 8 and Figure 9In Fig. 6, the rechargeable battery 3 is shown, wherein the locking device 18 is in the third position. The second end 29b of the third lever element 21 has been moved (i.e. pushed) further in the arrow direction C downwards. The first end 29a of the third lever element 21 has been pivoted further around the pivot point of the third pivot joint 24 in relation to the rear side 14b of the rechargeable battery housing 14. The first end 20a of the second lever element 20 has been moved further in the arrow direction A, and at the same time, the second end 20b of the second lever element 20 has been moved further in the arrow direction C. The first and second hook elements 27a, 27b have been moved further in the arrow direction D due to the pivoting movement of the first lever element 19, and are further engaged in the two recesses 10a, 10b of the rechargeable battery interface 8 of the power tool 2. The rechargeable battery 3 is moved in the arrow direction B by the movement of the locking device 18, so that the resilient stop element 17 is further compressed between the rechargeable battery 3 and the power tool 2. The resilient stop element 17 is pressed with a greater spring force against the rechargeable battery 3.

[0074] In Figure 10 and Figure 11 In Fig. 6, the rechargeable battery 3 is shown, wherein the locking device 18 is in the third position. The second end 29b of the third lever element 21 has been moved (i.e. pushed) further in the arrow direction C downwards. The first end 29a of the third lever element 21 has been pivoted further around the pivot point of the third pivot joint 24 in relation to the rear side 14b of the rechargeable battery housing 14. The first end 20a of the second lever element 20 has been moved further in the arrow direction A, and at the same time, the second end 20b of the second lever element 20 has been moved further in the arrow direction C. The first and second hook elements 27a, 27b have been moved further in the arrow direction D due to the pivoting movement of the first lever element 19, and are further engaged in the two recesses 10a, 10b of the rechargeable battery interface 8 of the power tool 2. The rechargeable battery 3 is moved in the arrow direction B by the movement of the locking device 18, so that the resilient stop element 17 is further compressed between the rechargeable battery 3 and the power tool 2. The resilient stop element 17 is pressed with a greater spring force against the rechargeable battery 3.

[0075] In Figure 12 and Figure 13In the middle, the rechargeable battery 3 is shown, wherein the locking device 18 is in the fifth or end position. The second end 29b of the third lever element 21 has been moved (i.e. pushed) further in the direction of the arrow C downwards, so that the third lever element 21 lies flat against the rear side 14b of the rechargeable battery housing 14. The first end 20a of the second lever element 20 is moved further in the direction of the arrow A, and at the same time, the second end 20b of the second lever element 20 is moved further in the direction of the arrow C. The first and second hook-like elements 27a, 27b are moved further in the direction of the arrow D due to the rotational movement of the first lever element 19, and now fully engage in the two recesses 10a, 10b of the rechargeable battery interface 8 of the power tool 2. The rechargeable battery 3 has now been moved as far as possible in the direction of the arrow B by the movement of the locking device 18. The resilient stop element 17 is now fully compressed between the rechargeable battery 3 and the power tool 2. The resilient stop element 17 presses with the maximum spring force on the rechargeable battery 3 in the direction of the arrow A.

[0076] The rechargeable battery 3 is now fully and securely connected to the power tool 2.

[0077] According to an alternative embodiment of the locking device 18, the locking device 18 can also be configured without the second and fourth rotational joints 23, 25.

[0078] List of reference signs

[0079] 1 system

[0080] 2 power tool

[0081] 3 rechargeable battery

[0082] 4 housing of the power tool

[0083] 4a front end of the housing of the power tool

[0084] 4b rear end of the housing of the power tool

[0085] 4c top side of the housing of the power tool

[0086] 4d bottom side of the housing of the power tool

[0087] 5 tool fitting

[0088] 6 main handle

[0089] 7 auxiliary handle

[0090] 8 rechargeable battery interface

[0091] 9 slot

[0092] 10a first recess

[0093] 10b second recess

[0094] 11 track

[0095] 12 plug

[0096] 13 socket

[0097] 14 rechargeable battery housing

[0098] 14a front side of the rechargeable battery housing

[0099] 14b rear side of the rechargeable battery housing

[0100] 14c top side of the rechargeable battery housing

[0101] 14d bottom side of the rechargeable battery housing

[0102] 15a energy storage cell

[0103] 15b control device

[0104] 16 power tool interface

[0105] 17 stop element

[0106] 18 locking device

[0107] 19 first lever element

[0108] 20 second lever element

[0109] 20a first end of the second lever element

[0110] 20b second end of the second lever element

[0111] 21 third lever element

[0112] 22 first rotary joint

[0113] 23 second rotary joint

[0114] 24 third rotary joint

[0115] 25 fourth rotary joint

[0116] 26 elongated base body of the first lever element

[0117] 26a first end of the elongated base body

[0118] 26b second end of the elongated base body

[0119] 27a second hook-like element

[0120] 27b second hook-like element

[0121] 28 curved base body of the second lever element

[0122] 29a first end of the third lever element

[0123] 29b second end of the third lever element

Claims

1. A system (1) comprising a power tool (2) and a rechargeable battery (3) for supplying electrical energy to the power tool (2). Its features are, The rechargeable battery (3) includes a locking device (18) for releasably connecting the rechargeable battery (3) to the power tool (2), wherein the locking device (18) includes at least one first lever element (19) and a second lever element (20) articulated together, such that the locking device (18) can reversibly move from a locked position to a released position, wherein in the locked position the rechargeable battery (3) is securely connected to the power tool (2), and in the released position the rechargeable battery (3) can be removed from the power tool (2), wherein the locking device (18) is configured as a toggle mechanism.

2. The system (1) as described in claim 1. Its features are, The rechargeable battery (3) includes a third lever element (21) for reversibly actuating the second lever element (20) from a first position to a second position.

3. The system (1) as described in claim 1 or 2. Its features are, The second lever element (20) is at least partially constructed in an elastic manner.

4. The system (1) as described in claim 1 or 2. Its features are, At least one resilient stop element (17) is present between the rechargeable battery (3) and the power tool (2), wherein the at least one resilient stop element (17) is positioned opposite to the locking device (18).

5. A rechargeable battery (3) for supplying electrical energy to the power tool (2) of the system (1) as described in any one of claims 1 to 4, Its features are, The rechargeable battery (3) includes a locking device (18) for releasably connecting the rechargeable battery (3) to the power tool (2), wherein the locking device (18) includes at least one first lever element (19) and a second lever element (20) articulated together, such that the locking device (18) can reversibly move from a locked position to a released position, wherein in the locked position the rechargeable battery (3) is securely connected to the power tool (2), and in the released position the rechargeable battery (3) can be removed from the power tool (2).

Images