Machine tool with protective element

Abstract

The invention relates to a mechanical tool (1), in particular a jack hammer, the machine tool has a housing (3), a working axis (9) extending in a longitudinal direction, at least one rechargeable battery interface device (19, 21) for detachably connecting at least one rechargeable battery (15, 17) to the machine tool (1), and a first side handle (5) having a first main extension direction (33) and a second side handle (7) having a second main extension direction (35). The side handles (5, 7) are arranged substantially symmetrically with respect to the working axis (9). At least one decoupling device (39, 41) is provided for a damping connection of the side handle (5, 7) to the housing (3). At least one rechargeable battery interface device (19, 21) is coupled to the side handle (5, 7). At least one protection device (75, 77) is provided for protecting the rechargeable battery (15, 17) coupled to the rechargeable battery interface device (19, 21). The at least one protection device (75, 77) has an interior (93) for at least partially receiving the at least one rechargeable battery (15, 17). The at least one protection device (75, 77) is connected directly to the housing (3) or is a one-piece assembly of the housing (3).

Description

Technical Field

[0001] The invention relates to a machine tool, in particular a jack hammer, of the type defined in more detail in the preamble of patent claim 1. Background Art

[0002] DE 10 2018 210 189 A1 discloses an impact hammer with a housing, wherein the center of gravity of the machine tool is arranged substantially on the working axis. The machine tool has a rechargeable battery interface, via which a rechargeable battery pack can be detachably connected to the machine tool. The handles are each connected to the housing via a damping unit. It is further disclosed that the rechargeable battery pack is arranged below the handle and is protected by a protective element connected to the handle.

[0003] Disadvantageously, protection of the rechargeable battery pack in such embodiments may be inadequate or undesirably less, particularly in the event that the machine tool is dropped or in the event of an impact. Summary of the invention

[0004] The object of the present invention is to provide a machine tool, in particular a jack hammer, in which the protection of a rechargeable battery connected to the machine tool is improved.

[0005] This object is achieved by the subject matter of independent claim 1. Further advantageous embodiments of the invention can be seen in the corresponding dependent claims.

[0006] A machine tool, in particular a jack hammer, is proposed, which has a housing, a working axis extending in a longitudinal direction, at least one rechargeable battery interface device for detachably connecting at least one rechargeable battery to the machine tool, and a first side handle and a second side handle, wherein the side handles are arranged substantially symmetrically about the working axis, wherein at least one decoupling device is provided for a vibration-damping connection of the side handle to the housing, wherein at least one rechargeable battery interface device is coupled to the side handle, wherein at least one protective device is provided for protecting a rechargeable battery coupled to the rechargeable battery interface device, and wherein at least one protective device has an interior for at least partially receiving at least one rechargeable battery.

[0007] According to the invention, it is proposed that the protection device is directly connected to the housing or is an integral component of the housing.

[0008] The machine tool designed according to the invention has the following advantages: in particular in all operating states of the machine tool, at least one rechargeable battery connected to at least one rechargeable battery interface device is protected from damage in a simple manner to the desired extent. This is achieved by arranging the protection device fixedly to the housing, which allows the protection device to be designed to be particularly stable and robust and the forces acting on the protection device to be transmitted directly to the housing of the machine tool. In an embodiment according to the invention, the protection device is arranged on the housing independently of the decoupling device. In the solution according to the invention, the protection device is therefore not affected by the damping properties of the decoupling device, whereby an improved protection of the rechargeable battery connected to the rechargeable battery interface device can be achieved.

[0009] Furthermore, by arranging at least one protective device fixedly to the housing, the decoupling device is also particularly well protected, since the at least one decoupling device, due to its indirect connection to the protective device, is at least not directly exposed to shocks, vibrations, etc., for example caused by the machine tool falling or dropping.

[0010] In addition, by connecting at least one rechargeable battery interface to the side handle during operation of the machine tool, a decoupling of the rechargeable battery connected to the rechargeable battery interface device from the housing is provided, so that vibrations and shocks occurring during operation of the machine tool act on the rechargeable battery interface device and therefore also on the rechargeable battery connected to the rechargeable battery interface device, in particular only to a greatly reduced extent.

[0011] The connection between the protection device and the housing can be configured to be either non-detachable or detachable.

[0012] The first side handle and the second side handle each define a first main extension direction and a second main extension direction, wherein when the side handle is in an unloaded state, these main extension directions are particularly arranged to extend substantially perpendicularly to the longitudinal direction and substantially in the transverse direction. The center of gravity of the machine tool in the upright position is preferably substantially located on the working axis.

[0013] Since the rechargeable battery interface device is arranged on the first side handle and / or the second side handle, the installation height of the machine tool in the longitudinal direction is advantageously low. In addition, when the rechargeable battery is arranged on the rechargeable battery interface device, the user's view of the machine tool is advantageously not blocked by the rechargeable battery. In addition, compared to the arrangement of the rechargeable battery interface device in the end area of ​​the machine tool facing away from the tool holder, the center of gravity of the proposed machine tool is advantageously arranged to be close to the machined surface. Therefore, compared to the arrangement of the rechargeable battery in the end area of ​​the machine tool facing away from the tool holder, during operation of the machine tool, the maximum drop height of the rechargeable battery connected to the rechargeable battery interface device is also reduced, so that the risk of damage to the rechargeable battery connected to the rechargeable battery interface device is reduced.

[0014] The decoupling device reduces mechanical effects such as impact, vibration, etc., acting on a user holding the machine tool by the side handle during operation of the machine tool. In addition, the rechargeable battery connected to the rechargeable battery interface device is also protected from mechanical influences by the decoupling device, and its influence on the rechargeable battery connected to the rechargeable battery interface device is greatly reduced.

[0015] In an advantageous embodiment of the machine tool according to the invention, at least two rechargeable battery interface devices are provided, wherein a first rechargeable battery interface device is operatively connected to the first side handle and a second rechargeable battery interface device is operatively connected to the second side handle, wherein a protective device is assigned to each battery interface device. Furthermore, provision may also be made for a common protective device to be provided for at least two rechargeable battery interface devices.

[0016] The protective device can be arranged on the housing in a particularly simple manner by means of a screw connection. This makes it easier to replace the protective device. Alternatively or in addition, it can also be provided that at least one protective device can be arranged on the housing by means of at least one clamping connection (for example a tensioning belt or the like).

[0017] The arrangement of the protective device is particularly simple and the degree of freedom in designing the protective device is particularly great if at least one protective device is designed in at least two parts.

[0018] In an advantageous embodiment of the machine tool according to the invention, at least one inner portion of the protective device is designed such that, when a rechargeable battery is connected to the rechargeable battery interface device, a movement of at least one associated rechargeable battery in a movement direction or about a rotation axis is possible to a limited extent. In this way, contact between the protective device arranged for relative movement and the rechargeable battery connected to the rechargeable battery interface device can be reliably prevented during operation of the machine tool.

[0019] In an advantageous embodiment of the machine tool according to the invention, the at least one protective device is designed such that, when the rechargeable battery is connected to the rechargeable battery interface device and the machine tool falls in any direction, the at least one protective device comes into contact with the flat base before the rechargeable battery is connected to the rechargeable battery interface device. This ensures particularly good protection of the rechargeable battery connected to the rechargeable battery interface device in any operating situation.

[0020] If the rechargeable battery interface device is arranged on the side of the corresponding side handle facing the tool holder in the longitudinal direction and is in particular directly connected to the corresponding side handle, an improved embodiment of the invention is achieved with regard to the center of gravity, the user's field of vision in the direction of the working area and the structural length of the machine tool.

[0021] In order to easily allow the rechargeable battery to be arranged on the respective rechargeable battery interface device in the insertion direction, at least one protective device can have a recess which is substantially oriented in the transverse direction for the operational connection of the rechargeable battery to the rechargeable battery interface device. In principle, it can also be provided that the protective device is designed in such a way that the rechargeable battery can be arranged on the respective rechargeable battery interface device in any orientation in the insertion direction.

[0022] The insertion device for the operational connection of the rechargeable battery to the rechargeable battery interface device can be angled relative to the main extension direction of the corresponding side handle, wherein the angle is between -30° and 90°, in particular between 0° and 30°, and preferably about 20°.

[0023] In an advantageous embodiment of the machine tool according to the invention, at least one rechargeable battery interface device has at least two connection areas for connecting the respective rechargeable battery interface device to the respective side handle, wherein the two connection areas are spaced apart from one another in the lateral direction. In this way, a safe and stable connection of the rechargeable battery interface device to the respective side handle can be achieved.

[0024] In an advantageous development of the invention, the rechargeable battery interface device can be flexibly connected to the respective side handle in at least one connection region. This allows further damping of the rechargeable battery connected to the rechargeable battery interface device to be achieved. This can be particularly advantageous if the decoupling device of the respective side handle is in an extreme position in an operating state in which the damping properties of the decoupling device are reduced or the decoupling device has no damping properties. Furthermore, provision can also be made for the rechargeable battery interface device to be hinged to the respective side handle in at least one connection region. Provision can also be made for the rechargeable battery interface device to be fixedly or rigidly connected to the respective side handle in both connection regions.

[0025] In an advantageous embodiment of the invention, in order to decouple the side handle from the housing, a first decoupling device is provided, which has a first spring device and a first lever device, by means of which the first side handle is rotatably articulated at a first pivot point fixed to the housing, and a second decoupling device is provided, which has a second spring device and a second lever device, by means of which the second side handle is rotatably articulated at a second pivot point fixed to the housing, wherein the first spring device is fixedly mounted to the housing on the one hand and connected to the first lever device on the other hand, and wherein the second spring device is fixedly mounted to the housing on the one hand and connected to the second lever device on the other hand. The spring device is designed in particular as a tension spring and reduces vibrations acting on the side handle during operation of the machine tool.

[0026] Other advantages can be seen in the following description of the drawings. Different exemplary embodiments of the present invention are shown in the drawings. The drawings, the description and the claims contain many combined features. Those skilled in the art will also conveniently consider these features individually and combine these features to form useful additional combinations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the attached picture: Figure 1 shows a side view of a machine tool designed as a jack hammer with a chisel arranged in a tool holder, wherein the machine tool is shown in an unloaded idle state; Figure 2 Shown according to Figure 1 3D view of the jack hammer; Figure 3 Shown according to Figure 1 and Figure 2 The jack hammer corresponds to Figure 1 A side view of a jack hammer shown without a housing portion; and Figure 4 Shown according to Figures 1 to 3 Side view of a jack hammer arranged on a flat base.

[0028] Exemplary embodiments Figures 1 to 4 The machine tool 1 is shown in each case in the form of a jack hammer. However, the machine tool 1 can also be designed in the form of a screwdriver, a drill, a hammer drill or the like.

[0029] The machine tool 1 designed as a jack hammer is shown in the figures in an idle position, i.e. in an unactivated state, and has a housing 3, which can be designed in one piece or in multiple pieces. Furthermore, the machine tool 1 has a first side handle 5 and a second side handle 7, which are substantially symmetrical about a working axis 9, which defines the longitudinal axis or longitudinal direction of the machine tool 1. In the present case, the tool holder 11 engages with a tool 13, which is designed as a chisel in the working axis 9.

[0030] The interior of the housing 3 essentially contains an electric motor and an impact device. The impact device can also be referred to as an impact mechanism or an impact device. The electric motor and the impact device are connected to each other in such a way that a pulse-shaped impact is generated and transmitted to the tool holder 11. Neither the electric motor nor the impact device is shown in the figure.

[0031] In order to supply electrical energy to the machine tool 1 and in particular to the electric motor, in the present case a first rechargeable battery 15 and a second rechargeable battery 17 are provided, wherein the first rechargeable battery 15 is operably connected to a first rechargeable battery interface device 19 and the second rechargeable battery 17 is operably connected to a second rechargeable battery interface device 21.

[0032] According to alternative embodiments, it is also possible to use only one rechargeable battery or more than two rechargeable batteries.

[0033] The housing 3 has a lower end 23 in the longitudinal direction 9 and an opposite upper end 25, in the region of which the tool holder 11 is provided. Furthermore, the housing 3 has a first side region 27 and a second side region 29. The side regions 27, 29 form opposite boundaries of the housing 3 in a transverse direction 31. The transverse direction 31 is perpendicular to the working axis 9 and is substantially identical in the present case to the main extension directions 33, 35 of the side handles 5, 7 when the machine tool 1 is in the idle state.

[0034] The first side handle 5 is arranged in a first side region 27 of the housing 3 and the second side handle 7 is arranged in a second side region 29 of the housing.

[0035] Provided in Figure 3 A decoupling device 37 is visible in more detail in the drawing, by means of which the side handles 5 and 7 are decoupled to a certain extent from the housing 3 and thus from shocks, vibrations etc. which are transmitted to the housing 3 via the chisel 13 during operation of the machine tool 1.

[0036] In the present case, the decoupling device 37 has a first decoupling device 39 assigned to the first side handle 5 and a second decoupling device 41 assigned to the second side handle 7. The first decoupling device 39 has a first lever device 45 and a first spring device designed as a tension spring 43, wherein the first lever device 45 is hinged to a first pivot point 47 fixed to the housing on the one hand and is connected to the first side handle 5 on the other hand. The first tension spring 43 is fixedly mounted to the housing at one end and is connected to a first hinge point 49 at the other end, which is located between the first pivot point 47 fixed to the housing and the first side handle 5. Thus, the first side handle 5 can be displaced when performing a circular cross-sectional movement relative to the housing about the first pivot point 47 fixed to the housing 3, so that the first main extension direction 33 can be rotated within a certain angle range relative to the transverse direction 31.

[0037] Similarly, the second decoupling device 41 has a second lever device 53 and a second spring device designed as a tension spring 51, wherein the second lever device 53 is hinged to a second pivot point 55 fixed to the housing on the one hand and is connected to the second side handle 7 on the other hand. The second tension spring 51 is fixedly mounted to the housing at one end and is connected to a second hinge point 57 at the other end, which is located between the first pivot point 47 fixed to the housing and the first side handle 5. Therefore, the second side handle 7 can be displaced when performing a circular cross-sectional movement relative to the housing about the second pivot point 55 fixed to the housing 3, so that the second main extension direction 35 can be rotated within a certain angle range relative to the transverse direction 31.

[0038] The first pivot point 47 fixed to the housing is arranged between the second pivot point 55 fixed to the housing and the second side handle 7 in the transverse direction 31. Therefore, the second pivot point 55 fixed to the housing is arranged between the first pivot point 47 fixed to the housing and the first side handle 5 in the transverse direction 31. In this case, the lever devices 45 and 53 are designed to bend in opposite directions so that they can simultaneously move the first side handle 5 and the second side handle 7 downward and upward in the direction of the working axis by rotational movement around the corresponding pivot point 47 or 55 fixed to the housing.

[0039] Provision can be made for two tension springs 43 , 51 to be assigned to each decoupling device 39 , 41 , so that the two tension springs 43 interact with the first lever device 45 and the two tension springs 51 interact with the second lever device 53 .

[0040] The first rechargeable battery interface device 19 is arranged on the first side handle 5. Similarly, the second rechargeable battery interface device 21 is arranged on the second side handle 7. The first rechargeable battery interface device 19 is substantially mirror-symmetrical to the second rechargeable battery interface device 21, wherein the connection between the second rechargeable battery interface device 21 and the second side handle 7 is described below as representing the connection between the first rechargeable battery interface device 19 and the first side handle 5.

[0041] The second rechargeable battery interface device 21 has a substantially planar base plate 61 and a connection device 63 for receiving a second rechargeable battery 17, wherein the second rechargeable battery 17 is operatively connected to the connection device 63 via a movement in an insertion direction 65 and can be released from the connection device 63 in a movement direction oriented in the opposite direction. With the help of the connection device 63, the second rechargeable battery 17 can be removably connected to the machine tool 1 both mechanically and electrically. The releasable connection of the second rechargeable battery 17 allows electrical energy to be transferred from the rechargeable batteries 15, 17 to electrical consumers (e.g. an electric motor) of the machine tool 1. It is possible to supply the machine tool 1 using only a single rechargeable battery.

[0042] The insertion direction 65 forms an angle 67 with respect to the second main extension direction 35 of the second side handle 7 , wherein the angle 67 is approximately 20° in the present case.

[0043] In the present case, the second rechargeable battery interface device 21 has a first connection area 69 and a second connection area 71, wherein the second rechargeable battery interface device 21 is connected to the second side handle 7 via the two connection areas 69 and 71 without a connection fixed to the housing. The first connection area 69 and the second connection area 71 are arranged at a distance from one another in the transverse direction 31, wherein the first connection area 69 is arranged in the area facing the working axis 9 and the second connection area 71 is arranged in the area facing the second side handle 7. In the first connection area 69, the second rechargeable battery interface device 21 is substantially rigidly connected to the second side handle 7 in the area adjacent to the housing 3. In the present case, the second connection area 71 is flexible and allows a movement of the second rechargeable battery interface device 21 relative to the second side handle 7, which accordingly produces an additional decoupling of the second rechargeable battery interface device 21 relative to the housing 3.

[0044] In this case, a protective device 75 or 77 is assigned to each rechargeable battery interface device 19, 21 and protects the rechargeable battery 15 or 17 from blows or impacts in the event that the machine tool 1 falls or falls over, such as in Figure 47. The protective device 75 is designed so that, for example, when the machine tool 1 falls over in any operating state, before the corresponding rechargeable battery 15 or 17 comes into contact with the surface 79 of the base, which is flat in this case, the protective device protects the corresponding rechargeable battery 15, 17 from blows or impacts. The first protective device 75 and the second protective device 77 are both arranged on the housing 3 so that the first rechargeable battery interface device 19 and the second rechargeable battery interface device 21 can be displaced relative to the first protective device 75 or the second protective device 77.

[0045] The first protection device 75 and the second protection device 77 are arranged and designed relative to one another in a substantially mirror-symmetrical manner about the working axis 9. The second protection device 77 is described in more detail below as a representative of the first protection device 75.

[0046] In the present case, the second protective device 77 is designed in two parts - with a first part 81 and a second part 83, wherein the first part 81 can be detachably connected to the second part 83 in an operational connection, in particular via a plurality of threaded connections. Again, the parts 81, 83 connected to each other can be detachably arranged on the housing 3 via a plurality of threaded connections. By connecting the protective device 77, 79 to the housing 3, a particularly good protection of the rechargeable batteries 15, 17 can be achieved. According to an alternative embodiment, it can also be provided that the first part and / or the second part is fixedly (i.e., non-detachably) connected to the housing 3 of the machine tool 1 and is, for example, integral with the housing 3.

[0047] In the present case, the first component 81 and the second component 83 have a circumferential frame 85 or 87 or a bracket, which are connected to one another via one or more connecting elements 89. Preferably, the connecting element 89 is formed together by the first component 81 and the second component 83. Preferably, the connecting element 89 is arranged on the side of the protective device 77, 79 facing the tool holder 11.

[0048] The second protective device 77 has a recess 91 which enables the rechargeable battery 17 to be arranged on the second rechargeable battery interface device 21 in the insertion direction 65. In alternative embodiments, the recess can also be provided at other positions, so that the arrangement of the rechargeable battery on the second rechargeable battery interface device can have essentially almost any insertion direction 65.

[0049] In the mounted state of the second protection device 77, i.e. when the two components 81 and 83 are connected to one another and to the housing 3 of the machine tool 1, the protection device 77 forms a type of holder with an interior 93. In the present case, the protection device 77 is designed such that the rechargeable battery 17 can in the present case be arranged completely in the interior 93 defined by the protection device 77.

[0050] The interior 93 of the guard 77 is designed such that the rechargeable battery 17 can be displaced within a defined angular range about the pivot point 55 fixed to the housing, in particular during operation of the machine tool 1 , without coming into contact with the guard 77 .

[0051] In an alternative embodiment, the protective device 77 can also be one-piece or multi-piece. In an alternative embodiment, the parts 81, 83 can be designed essentially as desired and do not have to form a circumferential frame. In addition, it can also be provided that, when the machine tool is in the unloaded state, the rechargeable battery is not completely arranged in the interior, but at least partially protrudes from the interior. In this case, however, the protective device is preferably also designed so that when the machine tool falls or falls in absolutely any direction, the protective device first comes into contact with the flat base.

Claims

1. A machine tool (1), in particular a jack hammer, comprising a housing (3), a working axis (9) extending in a longitudinal direction, at least one rechargeable battery interface device (19, 21) for detachably connecting at least one rechargeable battery (15, 17) to the machine tool (1), and a first side handle (5) having a first main extension direction (33) and a second side handle (7) having a second main extension direction (35), wherein the side handles (5, 7) are arranged substantially symmetrically with respect to the working axis (9), wherein at least one decoupling device (39, 41) is provided for a vibration-damping connection of the side handles (5, 7) to the housing (3), wherein at least one rechargeable battery interface device (19, 21) is coupled to the side handle (5, 7), wherein at least one protection device (75, 77) is provided for protecting the rechargeable battery (15, 17) coupled to the rechargeable battery interface device (19, 21), and wherein the at least one protection device (75, 77) is provided for protecting the rechargeable battery (15, 17) coupled to the rechargeable battery interface device (19, 21), and wherein the at least one protection device (75, 77) is provided for protecting the rechargeable battery (15, 17) coupled to the rechargeable battery interface device (19, 21). 77) has an interior (93) for at least partially receiving the at least one rechargeable battery (15, 17), characterized in that At least one protection device (75, 77) is directly connected to the housing (3) or is an integral component of the housing (3).

2. The machine tool according to claim 1, characterized in that At least two rechargeable battery interface devices (19, 21) are provided, wherein a first rechargeable battery interface device (19) is operably connected to a first side handle (5) and a second rechargeable battery interface device (21) is operably connected to a second side handle (7), wherein a protective device (75, 77) is assigned to each battery interface device (19, 21).

3. The machine tool according to claim 1 or 2, characterized in that: At least one protective device (75, 77) is arranged on the housing (3) by means of at least one screw connection.

4. A machine tool according to any one of the preceding claims, characterised in that At least one protective device (75, 77) is arranged on the housing (3) by means of at least one clamping connection.

5. A machine tool according to any one of the preceding claims, characterised in that At least one protective device (75, 77) is designed in at least two parts (81, 83).

6. A machine tool according to any one of the preceding claims, characterised in that At least one interior (93) of the protective device (75, 77) is designed such that, when said rechargeable battery (15, 17) is connected to a rechargeable battery interface device (19, 21), a movement of at least one associated rechargeable battery (15, 17) in a movement direction or about an axis of rotation (47, 55) is possible to a defined extent.

7. A machine tool according to any one of the preceding claims, characterised in that At least one protective device (75, 77) is designed so that, when the rechargeable battery (15, 17) is connected to the rechargeable battery interface device (19, 21) and the machine tool (1) falls in any direction, the at least one protective device (75, 77) contacts the flat base (79) before the rechargeable battery (15, 17) is connected to the rechargeable battery interface device (19, 21).

8. A machine tool according to any one of the preceding claims, characterised in that The rechargeable battery interface device (19, 21) is arranged on a side of the corresponding side handle (5, 7) facing the tool holder (11) relative to the longitudinal direction (9).

9. A machine tool according to any one of the preceding claims, characterised in that At least one protective device (75, 77) has a recess (91) which points essentially in a lateral direction (31) for an operational connection of a rechargeable battery (15, 17) to the rechargeable battery interface device (19, 21).

10. A machine tool according to any one of the preceding claims, characterised in that The insertion direction (65) for connecting the rechargeable battery (15, 17) to the rechargeable battery interface device (19, 21) is angled (67) relative to the main extension direction (33, 35) of the respective side handle (5, 7), wherein the angle (67) is between -30° and 90°, in particular between 0° and 30°, and preferably about 20°.

11. A machine tool according to any one of the preceding claims, characterised in that At least one rechargeable battery interface device (19, 21) has at least two connection areas (69, 71) for connecting the corresponding rechargeable battery interface device (19, 21) to the corresponding side handle (5, 7), wherein the two connection areas (69, 71) are spaced apart from each other in the transverse direction (31).

12. The machine tool according to claim 11, characterized in that The rechargeable battery interface device (19, 21) is flexibly connected to the corresponding side handle (5, 7) in at least one connection area (69, 71).

13. A machine tool according to any one of the preceding claims, characterised in that A first decoupling device (39) is provided, the first decoupling device having a first spring device (43) and a first lever device (45), the first side handle (5) being rotatably hinged on a first pivot point (47) fixed to the housing by means of the first spring device and the first lever device, and a second decoupling device (41) is provided, the second decoupling device having a second spring device (51) and a second lever device (53), the second side handle (7) being rotatably hinged on a second pivot point (55) fixed to the housing by means of the second spring device and the second lever device, wherein the first spring device (43) is fixedly mounted to the housing on the one hand and connected to the first lever device (45) on the other hand, and wherein the second spring device (51) is fixedly mounted to the housing on the one hand and connected to the second lever device (53) on the other hand.

Images