EP4321302A1 - Shock absorber device for a battery - Google Patents

Abstract

A machine tool (1), in particular a chisel hammer, is provided with a housing (3), a working axis (9) running in a longitudinal direction, and at least one battery interface device (19, 21) for releasably connecting at least one battery (15, 17). the machine tool (1) and a first side handle (5) with a first main extension direction (33) and a second side handle (7) with a second main extension direction (35). The side handles (5, 7) are arranged essentially symmetrically to the working axis (9). At least one decoupling device (39, 41) is provided for the vibration-damping connection of the side handles (5, 7) to the housing (3). A protective device (75) is provided for protecting an accumulator (15, 17) coupled to the battery interface device (19, 21). The protective device (75) has an interior (93) for at least partially accommodating at least one accumulator (15, 17). The protective device (75) comprises the housing (3) in the circumferential direction with respect to the longitudinal direction (9) and is connected to at least one side handle (5, 7) via at least one connecting device (78).

Description

The present invention relates to a machine tool, in particular a chisel hammer, according to the type defined in more detail in the preamble of patent claim 1.

From the EP 3 943 251 A1 a chisel hammer with a housing is known, wherein a drive device of the chisel hammer can be supplied with energy from accumulators. Two laterally arranged handles are provided, with a decoupling device being provided which is intended to reduce vibrations acting on the handles during operation. The chisel hammer is intended for the arrangement of two accumulators, which can each be arranged on a side of the housing facing away from a tool holder and thus above the housing by means of a battery interface device on the housing. A protective device is provided to protect the batteries.

Disadvantageously, such a chisel hammer has a large construction height in the longitudinal direction of the chisel hammer. In the event of the chisel hammer tipping or falling, the accumulators can be exposed to large forces due to the possibly large fall height, so that a protective device must be particularly stable and solid

In addition, from the DE 10 2018 210 189 A1 a percussion hammer with a housing is known, with a center of gravity of the machine tool being arranged essentially on the working axis. The machine tool has a battery interface via which a 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 battery pack is arranged below a handle and is protected by a protective element connected to the handle.

Disadvantageously, protection of the battery pack in such an embodiment can be insufficient or undesirably low, particularly in the event of a fall of the machine tool or in the event of impacts.

It is the object of the present invention to provide a machine tool, in particular a chisel hammer, in which the installation height of the machine tool is reduced and reliable protection of accumulators connected to the machine tool can be achieved in a structurally simple manner.

The object is solved by the subject matter of independent claim 1. Further advantageous embodiments of the invention can be found in the corresponding subclaims.

There is a machine tool, in particular a chisel hammer, with a housing, a working axis running in a longitudinal direction, at least one battery interface device for a releasable connection of at least one battery to the machine tool and a first side handle with a first main extension direction and a second side handle with a second main extension direction, wherein the side handles are arranged substantially symmetrically to the longitudinal direction, wherein at least one decoupling device is provided for the vibration-damping connection of the side handles to the housing, wherein a protective device is provided for protecting an accumulator coupled to the battery interface device, and wherein the protective device has an internal volume of at least partially accommodating the at least one accumulator.

According to the invention, it is proposed that the protective device encompasses the housing in the circumferential direction with respect to the longitudinal direction and is connected to at least one side handle via at least one connecting device.

A machine tool designed according to the invention has the advantage that accumulators connected to the at least one battery interface device can be easily protected against damage to the desired extent, particularly in all operating states of the machine tool. This is achieved by the design of the protective device encompassing the housing, which means that the protective device can be supported on the housing in a simple manner. In addition, accumulators connected to the battery interface device are protected from vibrations during operation by coupling the battery interface device to the side handles that are decoupled from the housing by means of the decoupling device.

Furthermore, a machine tool designed according to the invention has an advantageously low installation height in the longitudinal direction of the machine tool. This is achieved in that the protective device encompasses the housing and is therefore not arranged on a side of the housing facing away from a tool holder. Furthermore, compared to an arrangement of the battery interface device in an end region of the machine tool facing away from a tool holder, a center of gravity of the proposed machine tool is advantageously arranged close to a processing surface. This also ensures a maximum fall height The accumulator connected to the battery interface device is reduced in operation of the machine tool compared to an arrangement of the accumulator in an end region of the machine tool facing away from the tool holder, so that the risk of damage to an accumulator connected to the battery interface device is reduced.

The first side handle and the second side handle each define a first main extension direction and a second main extension direction, respectively, wherein the main extension directions in an unloaded state of the side handles are arranged in particular essentially perpendicular to the longitudinal direction and extend essentially in a transverse direction. A center of gravity of the machine tool in an upright position preferably lies essentially on a working axis of the machine tool defined by the tool holder.

The decoupling device reduces mechanical effects on a user who holds the machine tool by the side handles during operation of the machine tool, such as impacts, shocks or the like. In addition, an accumulator connected to the battery interface device is also protected from mechanical influences by the decoupling device or their effects on an accumulator connected to the battery interface device are greatly reduced.

In an advantageous embodiment of a machine tool according to the invention, the connecting device enables the protective device to move essentially in the longitudinal direction relative to the housing. This makes it easy to decouple the protective device and thereby also the battery interface device from the housing. In addition, the housing can act as a guide for the protective device and contribute to the stability of the protective device.

In a structurally simple embodiment of the invention, the connecting device has at least two levers, the protective device being connected to the first side handle by means of a first lever and to the second side handle by means of a second lever. The protective device is coupled to the side handles via the levers and is protected from vibrations acting on the housing during operation of the machine tool by the decoupling device, comparable to the side handles.

Particularly good protection of accumulators connected to the battery interface device can be achieved if the connecting device has at least two flexible elements, the protective device being connected to the by means of a first flexible element first side handle and connected to the second side handle by means of a second flexible element. The flexible elements can further dampen vibrations affecting the protective device and thus also the accumulators during operation of the machine tool. In addition, additional protection is also guaranteed in the event of a fall or fall of the machine tool.

In a preferred embodiment of a machine tool according to the invention, the flexible elements are made of an elastomeric material. In principle, any materials with resilient or damping properties can be used.

In order to limit the freedom of movement of the protective device relative to the housing in the longitudinal direction and thereby achieve good fall protection, the protective device can have a first stop area and the housing can have a second stop area, the protective device and the housing coming into contact with one another via the stop areas when the Protective device relative to the housing is displaced in the longitudinal direction from a rest position by a defined limit value.

Alternatively or additionally, it can be provided that the protective device has a third stop area and the housing has a fourth stop area, the third stop area and the fourth stop extending essentially in the longitudinal direction. Through an interaction of the third stop area with the fourth stop area, which are preferably designed to be circumferential, on the one hand guidance of the protective device relative to the housing is created to dampen vibrations. On the other hand, this interaction ensures that the protective device is supported on the housing, for example in the event of a fall or fall of the machine tool. When the machine tool is at rest, there is a distance between the third stop area and the fourth stop area, particularly on the circumference, which is selected such that jamming of the protective device relative to the housing during operation of the machine tool is reliably prevented.

An improved embodiment of the invention with respect to a center of gravity, a user's view in the direction of a work area and a structural length of the machine tool is achieved if the protective device and thus also the battery interface device and an accumulator optionally connected to the battery interface device are on a side facing a tool holder with respect to the longitudinal direction of the respective side handle and in particular in the longitudinal direction below the side handles.

In an advantageous embodiment of a machine tool according to the invention, the protective device has at least two battery interface devices, the battery interface devices being arranged in particular substantially symmetrically to the longitudinal axis. It can also be provided that the protective device has three, four or more battery interface devices. At least one accumulator can be connected to a battery interface device. It can also be provided that two, three or more accumulators can be operatively connected to a battery interface device.

In order to enable an accumulator to be arranged in an insertion direction on the respective battery interface device in a simple manner, at least one protective device can have a recess pointing essentially perpendicular to the longitudinal direction and perpendicular to a transverse direction for the operative connection of an accumulator to the battery interface device. In principle, it can also be provided that the protective device is designed in such a way that an arrangement of a battery on the respective battery interface device in any oriented insertion direction is possible.

In an advantageous embodiment of a machine tool according to the invention, at least one protective device is designed such that when the battery is connected to the battery interface device and the machine tool falls in any direction, the at least one protective device comes into contact with a flat surface in front of the battery connected to the battery interface device. In this way, particularly good protection of an accumulator connected to a battery interface device can be ensured in any operating situation.

In an advantageous embodiment of the invention, for decoupling the side handles from the housing, there is a first decoupling device, which has a first spring device and a first lever device, by means of which the first side handle is rotatably articulated to a first pivot point fixed to the housing, and a second decoupling device, which a second spring device and a second lever device, by means of which the second side handle is rotatably articulated to a second pivot point fixed to the housing, the first spring device being mounted fixed to the housing on the one hand and connected to the first lever device on the other hand, and the second spring device being mounted fixed to the housing on the one hand and on the other hand is connected to the second lever device. The spring devices are designed in particular as tension springs and reduce vibrations acting on the side handles during operation of the machine tool.

Further advantages result from the following description of the figures. Various exemplary embodiments of the present invention are shown in the figures. The figures, the description and the claims contain numerous features in combination. The person skilled in the art will also expediently consider the features individually and combine them into further sensible combinations.

Fig. 1

eine Seitenansicht einer als Meißelhammer ausgestalteten Werkzeugmaschine mit einem in einer Werkzeugaufnahme angeordneten Meißel, wobei die Werkzeugmaschine in einem unbelasteten Ruhezustand gezeigt ist;

Fig. 2

eine dreidimensionale Ansicht des Meißelhammers gemäß Fig. 1;

Fig. 3

eine Fig. 1 entsprechende Seitenansicht des Meißelhammers gemäß Fig. 1 und Fig. 2, wobei der Meißelhammer ohne ein Gehäuseteil dargestellt ist;

Fig. 4

eine gegenüber der Darstellung in Fig. 1 um 90° gedrehte Seitenansicht des Meißelhammers gemäß Fig. 1 bis Fig. 3; und

Fig. 5

eine Seitenansicht des auf einem planen Untergrund angeordneten Meißelhammers gemäß Fig. 1 bis Fig. 4, wobei eine Schutzeinrichtung in einer geschnittenen Ansicht ersichtlich ist.

Show it:

Fig. 1

a side view of a machine tool designed as a chisel hammer with a chisel arranged in a tool holder, the machine tool being shown in an unloaded rest state;

Fig. 2

a three-dimensional view of the chisel hammer according to Fig. 1 ;

Fig. 3

one Fig. 1 Corresponding side view of the chisel hammer according to Fig. 1 and Fig. 2 , wherein the chisel hammer is shown without a housing part;

Fig. 4

one compared to the representation in Fig. 1 Side view of the chisel hammer rotated through 90° Fig. 1 to Fig. 3 ; and

Fig. 5

a side view of the chisel hammer arranged on a flat surface Fig. 1 to Fig. 4 , whereby a protective device can be seen in a sectioned view.

Examples:

In Fig. 1 to Fig. 5 A machine tool 1 is shown in the form of a chisel hammer. However, it is also possible for the machine tool 1 to be designed in the form of a screwdriver, a drill, a hammer drill or the like.

The machine tool 1 designed as a chisel hammer is shown in the figures in a rest position, ie a non-actuated state, and has a housing 3, which can be designed in one piece or in several parts. Furthermore, the machine tool 1 has a first side handle 5 and a second side handle 7, which are essentially symmetrical to a working axis 9, which defines a longitudinal axis or longitudinal direction of the machine tool 1. In the present case, a tool holder 11 is in engagement with a tool 13 designed as a chisel, which lies in the working axis 9.

Inside the housing 3 there is an electric motor and a striking device. The striking device can also be referred to as a striking mechanism or striking mechanism device. The electric motor and the impact device are connected to one another in such a way that pulse-like impacts are generated and transmitted to the tool holder 11. Neither the electric motor nor the impact device are shown in the figures.

To supply the machine tool 1 and in particular the electric motor with electrical energy, a first accumulator 15 and a second accumulator 17 are provided in the present case, the first accumulator 15 being in operative connection with a first battery interface device 19 and the second accumulator 17 being in operative connection with a second battery interface device 21 . The battery interface devices 19, 21 are arranged on a protective device 75, which will be discussed in more detail later.

According to an alternative embodiment, it is also possible that only one accumulator or more than two accumulators are used.

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

The first side handle 5 is arranged in the first side area 27 and the second side handle 7 in the second side area 29 of the housing 3, which is opposite the first side area 27 in the transverse direction 31.

It's an in Fig. 3 decoupling device 37, which can be seen in more detail, is provided, 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 and the like transmitted to the housing 3 via the chisel 13 during operation of the machine tool 1.

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 spring device designed as a tension spring 43 and a first lever device 45, the first lever device 45 being articulated on the one hand to a first pivot point 47 fixed to the housing and on the other hand being connected to the first side handle 5. The first tension spring 43 is on the one hand mounted fixed to the housing and connected at the other end to a first articulation point 49, which lies between the first pivot point 47 fixed to the housing and the first side handle 5. The first side handle 5 can thus be displaced relative to the housing 3 in a circular section-shaped movement about the first pivot point 47 fixed to the housing, so that the first main extension direction 33 can be rotated relative to the transverse direction 31 by a certain angular range.

Comparably to this, the second decoupling device 41 has a second spring device designed as a tension spring 51 and a second lever device 53, the second lever device 53 being articulated on the one hand to a second pivot point 55 fixed to the housing and, on the other hand, being connected to the second side handle 7. The second tension spring 51 is, on the one hand, mounted fixed to the housing and, on the other hand, is connected to a second articulation point 57, which lies between the first pivot point 47 fixed to the housing and the first side handle 5. The second side handle 7 can thus be displaced relative to the housing 3 in a circular section-shaped movement about the second pivot point 55 fixed to the housing, so that the second main extension direction 35 can be rotated relative to the transverse direction 31 by a certain angular range.

It can be provided that each decoupling device 39, 41 is assigned two tension springs 43, 51, so that two tension springs 43 interact with the first lever device 45 and two tension springs 51 with the second lever device 53.

The first pivot point 47 fixed to the housing is arranged in the transverse direction 31 between the second pivot point 55 fixed to the housing and the second side handle 7. Consequently, the second pivot point 55 fixed to the housing is arranged in the transverse direction 31 between the first pivot point 47 fixed to the housing and the first side handle 5. The lever devices 45 and 53 are designed to be curved in opposite directions in such a way that they enable a simultaneous movement of the first side handle 5 and the second side handle 7 in the direction of the working axis downwards and upwards by a rotational movement about the respective pivot point 47 or 55 fixed to the housing.

In the exemplary embodiment shown, the protective device 75 is arranged on a side of the side handles 5, 7 facing the tool holder 11 and has a housing 77 which surrounds or surrounds the housing 3 of the machine tool 1 on the circumference. The protective device 75 is designed essentially symmetrically to a central longitudinal plane of the machine tool 1.

In the present case, the protective device 75 is connected to the side handles 5, 7 via a connecting device 78. The connecting device 78 comprises a first lever 79, by means of which the protective device 75 is connected to the first side handle 5, and a second lever 81, by means of which the protective device 75 is connected to the second side handle 9. The first lever 79 has a first articulation point 83 in an area of the first side handle 5 close to the housing and a second articulation point 84 in an outer area of the protective device 75 in the transverse direction 31. Comparably, the second lever 81 has a third articulation point 85 in a region of the second side handle 7 close to the housing and a fourth articulation point 86 in an outer region of the protective device 75 in the transverse direction 31. The second articulation point 84 and the fourth articulation point 86 are thus arranged in areas of the protective device 75 that are far apart from one another in the transverse direction 31.

The protective device 75 can be moved via the linkage by means of the levers 79 and 81 to the side handles 5, 7 during operation of the machine tool 1 with the side handles 5, 7 relative to the housing 3 of the machine tool 1, the protective device 75 being connected via the interaction of the decoupling device 37 the levers 79, 81 can be displaced to a defined extent in the longitudinal direction 9 relative to the housing 3 of the machine tool 1 during operation of the machine tool 1.

In the rest position of the machine tool 1 shown in the figures, there is a small distance between the housing 77 of the protective device 75 and the housing 3 of the machine tool 1 transversely to the working axis 9 in order to prevent the protective device 75 from jamming relative to the housing 3 during operation of the machine tool 1 impede.

In order to ensure good protection for the accumulators 15, 17 connected to the battery interface devices 19, 21 during operation of the machine tool 1 and in particular in the event of a fall, fall or the like of the machine tool 1, the housing 77 of the protective device 75 has a first stop area 87 and that Housing 3 has a second stop area 88 intended to cooperate with the first stop area 87. The first stop area 87 and the second stop area 88 have a defined distance from one another in the longitudinal direction 9 in the rest position of the machine tool 1. If the protective device 75 is displaced in a direction facing away from the tool holder 11 with respect to the longitudinal direction 9 during operation of the machine tool 1 or in particular in the event of a fall, fall or the like of the machine tool 1, the housing 77 of the protective device 75 comes over the first stop area after overcoming the distance 87 in contact with the second stop area 88 of the housing 3. This provides additional support for the Protective device 75 on the housing 3 and thereby also improved protection of accumulators 15, 17 connected to the battery interface devices 19, 21.

In addition, the protective device 75 in this case has a third, preferably completely circumferential stop area 89. The housing 3 has a fourth stop area 90, which is intended to cooperate with the third stop area 89 of the protective device 75. For example, if the machine tool 1 falls or falls, a part of the third circumferential stop area 89 of the protective device 75 comes into contact with a part of the fourth stop area 90 of the housing 3. The protective device 75 preferably lies on the housing 3 over a continuous area in the longitudinal direction 9 so that a good supporting effect is achieved and accumulators 15, 17 connected to the battery interface devices 19, 21 are particularly well protected.

The first battery interface device 19 is here in an area of the protective device 75 assigned to the first side handle 5, i.e. H. arranged on the same side of the machine tool 1 with respect to the transverse direction 31 as the first side handle 5. Comparable to this is the second battery interface device 21 in an area of the protective device 75 assigned to the second side handle 7, i.e. H. arranged on the same side of the machine tool 1 with respect to the transverse direction 31 as the second side handle 7 and on a side of the machine tool 1 opposite the side of the first side handle 5.

The first battery interface device 19 is designed to be essentially mirror-symmetrical with respect to the working axis 9 to the second battery interface device 21, with the first battery interface device 19 being described below as a representative of the second battery interface device 21.

The first battery interface device 19 has a substantially flat base plate 61 and a connection device 63 for receiving the first battery 15, the first battery 15 being operatively connected to the connection device 63 via a movement in the insertion direction 65 and in an oppositely oriented direction of movement from the connection device 63 is solvable. With the help of the connection device 63, the second accumulator 17 can be detachably connected to the protective device 75 and thus connected to the machine tool 1 both mechanically and electrically. Due to the releasable connection of the first accumulator 15, electrical energy can be transferred from the accumulators 15, 17 to the consumers, e.g. B. the electric motor, the machine tool 1. It is possible for only a single accumulator to be used to supply the machine tool 1.

In the present case, the insertion direction 65 is oriented perpendicular to the longitudinal direction 9 and to the transverse direction 31 in a front direction 95. In alternative embodiments, it can basically be oriented in any direction and, for example, extend in the transverse direction 31. In addition, the insertion direction 65 can have an angle relative to the front direction 95, the transverse direction 31 and/or the longitudinal direction 9.

To accommodate the first battery 15, the protective device 75 has a recess 91, which enables the first battery 15 to be arranged in the insertion direction 65 on the first battery interface device 19. In alternative embodiments, the recess can also be provided at other positions, so that an arrangement of the battery on the first battery interface device with basically almost any oriented insertion directions 65 is possible.

In a mounted state of the first protective device 75, the protective device 75 forms a kind of cage with an interior 93. The protective device 75 is designed in the present case in such a way that the accumulator 17 can be arranged completely in the interior 93 defined by the protective device 75.

The protective device 75 can basically be made in one piece or in several parts. It can be provided that the battery is not completely arranged in the interior when connected to the battery interface device, but rather protrudes at least partially from the interior.

In this case, however, the protective device 75 is preferably also designed in such a way that if the machine tool 1 falls or falls in a fundamentally arbitrary direction, the protective device 75 comes into contact with a flat surface 97 in front of an accumulator 15 connected to the battery interface device 19, so that the accumulator 15 is protected to the desired extent by the protective device 75.

Claims (12)

Machine tool (1), in particular a chisel hammer, with a housing (3), a working axis running in a longitudinal direction (9), at least one battery interface device (19, 21) for a releasable connection of at least one battery (15, 17) to the machine tool (1 ) and a first side handle (5) with a first main extension direction (33) and a second side handle (7) with a second main extension direction (35), the side handles (5, 7) being arranged essentially symmetrically to the longitudinal direction (9), wherein at least one decoupling device (39, 41) is provided for the vibration-damping connection of the side handles (5, 7) to the housing (3), wherein a protective device (75) for protecting an accumulator (15) coupled to the battery interface device (19, 21), 17) is provided, and wherein the protective device (75) has an interior (93) for at least partially accommodating at least one accumulator (15, 17), characterized in that the protective device (75) covers the housing (3) of the machine tool (1) with respect to the longitudinal direction (9) in the circumferential direction and is connected to at least one side handle (5, 7) via at least one connecting device (78). Machine tool according to claim 1, characterized in that the connecting device (78) is designed such that the protective device (75) is movable substantially in the longitudinal direction (9) relative to the housing (3). Machine tool according to one of the preceding claims, characterized in that the connecting device (78) has at least two levers (79, 81), the protective device (75) being connected to the first side handle (5) by means of a first lever (79) and by means of a second Lever (81) is connected to the second side handle (7). Machine tool according to one of the preceding claims, characterized in that the connecting device (78) has at least two flexible elements, the protective device being connected to the first side handle (5) by means of a first flexible element and to the second side handle (7) by means of a second flexible element. connected is. Machine tool according to claim 4, characterized in that the flexible elements are made of an elastomeric material. Machine tool according to one of the preceding claims, characterized in that the protective device (75) has a first stop area (87) and the housing (3) of the machine tool (1) has a second stop area (88), the protective device (75) and the housing (3) of the machine tool (1) come into contact with one another via the stop areas (87, 88) when the protective device (75) relative to the housing (3) of the machine tool (1) starts from a rest position by a value greater than a defined limit value is displaced in the longitudinal direction (9). Machine tool according to one of the preceding claims, characterized in that the protective device (75) has a third stop area (89) and the housing (3) of the machine tool (1) has a fourth stop area (90), the third stop area (89) and the fourth stop area (90) extend essentially in the longitudinal direction (9). Machine tool according to one of the preceding claims, characterized in that the protective device (75) is arranged with respect to the longitudinal direction (9) on a side of the respective side handle (5, 7) facing a tool holder (11). Machine tool according to one of the preceding claims, characterized in that the protective device (75) has at least two battery interface devices (19, 21), the battery interface devices (19, 21) being arranged in particular substantially symmetrically to the longitudinal axis (9). Machine tool according to one of the preceding claims, characterized in that the protective device (75) has at least one recess (91) pointing essentially perpendicular to the longitudinal direction (9) and perpendicular to a transverse direction (31) for the operative connection of an accumulator (15, 17) with the Battery interface device (19, 21). Machine tool according to one of the preceding claims, characterized in that the protective device (75) is designed such that when the accumulator (15, 17) is connected to at least one battery interface device (19, 21) and the machine tool (1) falls in any direction, the protective device (75) comes into contact with a flat surface (97) in front of the accumulator (15, 17) connected to the battery interface device (19, 21). Machine tool according to one of the preceding claims, characterized in that a first decoupling device (39), which has a first spring device (43) and a first lever device (45), by means of which the first side handle (5) is rotatable at a first pivot point (47) fixed to the housing ) is articulated, and a second decoupling device (41), which has a second spring device (51) and a second lever device (53), by means of which the second side handle (7) is rotatably articulated to a second pivot point (55) fixed to the housing, is provided , wherein the first spring device (43) is, on the one hand, mounted fixed to the housing and, on the other hand, is connected to the first lever device (45), and wherein the second spring device (51) is, on the one hand, mounted fixed to the housing and, on the other hand, is connected to the second lever device (53).

Images