Pedal assembly and operation machine

Abstract

The utility model relates to the technical field of pedal assemblies, and discloses a pedal assembly and an operation machine. The pedal assembly comprises a fixed unit and a movable unit, the fixed unit is used for being arranged on the carrier plate, the fixed unit comprises at least two rail seats, the rail seats are arranged at intervals in the first direction, the movable unit comprises a pedal body and at least two rails, and the rails are arranged on the pedal body at intervals in the first direction. The rail extends in the second direction perpendicular to the first direction, the end, close to the carrying plate, of the rail protrudes out of the pedal body, the rail base is connected with and bears the rail, and the rail base and the rail can move relatively in the second direction. Due to the design of the track and the track seat, the pedal assembly can avoid other mechanisms on the carrier plate under the condition that the size of the track is not reduced, and the extending distance of the pedal body is increased.

Description

Technical Field

[0001] This utility model relates to the field of pedal assembly technology, specifically to pedal components and operating machinery. Background Technology

[0002] The bottom of the operator's cab of the operating machinery is usually equipped with a retractable step. When working, the step is extended by electric cylinder or hydraulic cylinder to facilitate personnel to enter and exit the operator's cab. When not working, the step is retracted to prevent the width of the vehicle from exceeding the limit during driving.

[0003] In related technologies, the pedals are generally installed on the track of the carrier plate. In some scenarios, the track is prone to interfering with other structures on the carrier plate, which hinders the layout design of other structures.

[0004] For example, in engineering cranes, the pedal assembly can rotate relative to the operator's cab under the action of a push rod mechanism on the side, so that personnel can view the surrounding environment of the turntable behind the operator's cab and the operation of the equipment.

[0005] In order to make the pedal avoid the push rod mechanism, the track on the side where the pedal and push rod mechanism are located needs to be shortened. However, shortening the track will reduce the extension distance of the pedal and the usable stepping area, which will affect the normal use of the pedal. Utility Model Content

[0006] In view of this, the present invention provides a pedal assembly and a working machine to solve the problem of insufficient pedal extension distance.

[0007] In a first aspect, the present invention provides a pedal assembly, including a fixed unit and a movable unit. The fixed unit is used to mount on a carrier plate and includes at least two rail seats, which are spaced apart in a first direction. The movable unit includes a pedal body and at least two tracks, which are spaced apart on the pedal body in the first direction. The tracks extend in a second direction perpendicular to the first direction, and one end of the track near the carrier plate protrudes from the pedal body. The rail seats connect to and support the tracks, and the rail seats and the tracks are capable of relative movement in the second direction.

[0008] Beneficial effects: The track and rail base can move relative to each other in the second direction, and the movable unit can extend or retract relative to the carrier plate under the action of the track, realizing the extension and retraction of the pedal body; on the one hand, making the rail base as a fixed unit can reduce the size of the fixed unit in the second direction and reduce the space occupied by the fixed unit on the carrier plate; on the other hand, the track is indirectly set on the carrier plate through the rail base, which can also create a certain gap between the track and the carrier plate; the design of the track and rail base helps the pedal assembly to avoid other mechanisms on the carrier plate without reducing the size of the track, thereby increasing the extension distance of the pedal body.

[0009] In one alternative embodiment, the rail base includes at least two first connecting portions, which are spaced apart in the second direction, and the rail connects to the first connecting portions.

[0010] Beneficial effects: Multiple first connecting parts form multiple support points for the track, which helps to reduce the length of the cantilever beam formed by the track, better support the moving unit, and ensure the safety of personnel when stepping on it and the smoothness of extension and retraction.

[0011] In one alternative embodiment, the end of the track near the carrier plate protrudes from the pedal body, and the maximum spacing of the first connecting portions is less than the length of the track extending out of the pedal body.

[0012] Beneficial effects: By making the track protrude from the pedal body, the rail seat can move along the track outside the pedal body during the extension process, thereby reducing the size of the pedal body while ensuring the stepping area during extension, which helps the pedal body avoid other mechanisms on the carrier plate; Since the maximum spacing of the first connecting part is less than the length of the track extending from the pedal body, in the extreme extension state, the first connecting part can be entirely located at the part of the track protruding from the pedal body, which helps the pedal body to fully extend from the carrier plate and make fuller use of the surface of the pedal body.

[0013] In one alternative embodiment, the rail base includes a support and a rolling element, the support being disposed on the carrier plate and the rolling element being rotatably disposed on the support; the rail is provided with a rail groove, the rail groove being open on one side facing the first direction, and the rolling element being embedded in the rail groove.

[0014] Beneficial effects: The use of rolling connection can reduce running resistance and improve the smoothness of extension and retraction. At the same time, the rolling elements are embedded in the track groove, which helps to better withstand the force from the moving unit.

[0015] In one alternative embodiment, the bracket is located at the bottom of the carrier plate, the bracket includes a second connecting portion connected to the carrier plate, and the rolling element is located on the side of the second connecting portion away from the carrier plate in the second direction.

[0016] Beneficial effects: When the pedal body is extended and in use, the force of the movable unit is applied to the rail seat through the rolling element, and the carrier plate generates a reaction force on the movable unit through the second connecting part. By setting the rolling element on the side of the second connecting part away from the carrier plate, the lever arm length between the movable unit and the rolling element can be reduced, the torque generated by the force can be reduced, and the load-bearing capacity of the rail seat can be improved.

[0017] In one optional embodiment, the rail base further includes a roller, the roller comprising a first shaft segment, a stepped portion and a second shaft segment arranged sequentially along its own axial direction, the diameter of the stepped portion being larger than that of the first shaft segment and the second shaft segment, the first shaft segment being fixedly mounted on the bracket, and the rolling element being rotatably sleeved on the second shaft segment.

[0018] Beneficial effects: The rolling elements are rotatably mounted via rollers. The stepped section separates the rolling elements from the support, preventing the support from interfering with the rotation of the rolling elements. It also keeps the support away from the track, preventing interference between the support and the track during operation.

[0019] In one alternative embodiment, the bracket includes a first limiting portion, and the pedal body includes a second limiting portion. The first limiting portion is located on the side of the rolling element away from the carrier plate in the second direction. The first limiting portion is used to contact and position the second limiting portion to limit the travel of the movable unit during retraction.

[0020] Beneficial effects: Setting the first limiting part as a limit can prevent the rolling element from leaving the track groove when retracting, thus improving the reliability of the pedal assembly; since the second limiting part is located on the pedal body, the bracket does not directly hit the track when limiting, which helps to reduce the impact on the track and prevent the track from deforming under force, thus reducing the smoothness of extension and retraction.

[0021] In an alternative embodiment, a drive unit is further included, connected between the movable unit and the carrier plate, the drive unit being used to drive the movable unit to extend and retract in the second direction.

[0022] Beneficial effects: The driving component drives the moving unit to move, and the fixed unit supports the moving unit. By separating the structures responsible for supporting and driving, it helps to reduce the load on the driving component, so as to select a relatively small driving component and thus avoid other structures on the carrier plate.

[0023] In one alternative embodiment, the driving component is a telescopic cylinder, one end of which is disposed on the carrier plate and the other end of which is disposed on the movable unit.

[0024] Beneficial effects: Using a telescopic cylinder as the driving component allows the connection between the driving component and the moving unit to extend beyond the carrier plate, thereby increasing the extension distance of the pedal body.

[0025] Secondly, this utility model also provides a working machine, including a control room and a pedal assembly provided by this utility model. The control room includes a carrier plate located at the inlet and outlet of the control room, and the pedal assembly is disposed on the carrier plate.

[0026] Beneficial effects: The pedal assembly includes the pedal assembly provided by this utility model, and therefore has the corresponding beneficial effects brought by the pedal assembly, which will not be elaborated here. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a top view of a pedal assembly according to an embodiment of the present utility model, in which the carrier plate is shown by dashed lines to show the pedal assembly below the carrier plate;

[0029] Figure 2 This is a top view schematic diagram of a pedal assembly according to an embodiment of the present utility model;

[0030] Figure 3 This is a top view of the rail base according to an embodiment of the present utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 101. Rail base; 1011. Bracket; 1012. Rolling element; 1013. Roller; 102. Pedal body; 1021. Second limiting part; 1022. Anti-slip block; 103. Rail; 104. Driving component; 2. Carrier plate; 3. Push rod. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a," "an," and "comprising" as used herein may also mean including the plural forms. The terms "comprising," "including," and "having" are inclusive and therefore indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0035] Although terms such as "first," "second," etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Furthermore, in the description of this application, unless otherwise expressly specified and limited, the terms "set up" and "connected" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "end," "length," "inner," "outer," etc. Such spatial relative terms are intended to include different orientations of the mechanism in use or operation, in addition to those depicted in the figure. For example, if the mechanism in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The mechanism may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0037] In related technologies, a retractable pedal is typically constructed by using a track in conjunction with a slider or roller. When in use, the pedal extends to facilitate stepping on it, and when not in use, the pedal retracts to reduce the overall size of the machinery and improve its maneuverability.

[0038] However, the track requires installation space, which can affect the layout of other structures. For example, in some related technologies, the pedal assembly consists of a multi-stage telescopic pedal combination, with a push rod connected to the top pedal to drive the entire pedal assembly to swing relative to the control cab. Because installation space needs to be reserved for the push rod, the available installation space for the second-stage pedal connected to the top pedal is correspondingly reduced. Specifically, the length of the track fixed to the top pedal is shortened, resulting in a corresponding reduction in the extension distance of the second-stage pedal and a smaller usable stepping area, affecting the normal use of the pedal.

[0039] The following is combined with Figures 1 to 3 The following describes an embodiment of the present invention. In the present invention, the first direction is shown by the X-axis and the second direction is shown by the Y-axis.

[0040] Reference Figure 1 , Figure 2 , Figure 3 According to an embodiment of the present invention, in one aspect, a pedal assembly is provided, including a fixed unit and a movable unit. The fixed unit is used to be mounted on a carrier plate 2 and includes at least two rail seats 101, which are spaced apart in a first direction. The movable unit includes a pedal body 102 and at least two tracks 103, which are spaced apart on the pedal body 102 in the first direction. The tracks 103 extend in a second direction perpendicular to the first direction, and one end of the track 103 near the carrier plate 2 protrudes from the pedal body 102. The rail seats 101 connect to and support the tracks 103, and the rail seats 101 and the tracks 103 are capable of relative movement in the second direction.

[0041] The track 103 and the track base 101 can move relative to each other in the second direction. The movable unit can extend or retract relative to the carrier plate 2 under the action of the track 103, thereby realizing the extension and retraction of the pedal body 102.

[0042] In this utility model, the carrier plate 2 refers to the structure used to install the pedal assembly. In related technologies, the track 103 is often set on the carrier plate 2 (that is, the track 103 is used as a fixing unit). Since the track 103 extends continuously in the extension direction, it will occupy a large installation area on the carrier plate 2.

[0043] On the one hand, this utility model uses the rail base 101 as a fixing unit, which can reduce the size of the fixing unit in the second direction and reduce the space occupied by the fixing unit on the carrier plate 2. On the other hand, the rail 103 is indirectly set on the carrier plate 2 through the rail base 101, which can also create a certain gap between the rail 103 and the carrier plate 2, thereby leaving installation space for other structures between the rail 103 and the carrier plate 2.

[0044] Therefore, the design of the track 103 and the rail base 101 helps the pedal assembly to avoid other mechanisms on the carrier plate 2 without reducing the size of the track 103, thereby increasing the extension distance of the pedal body 102.

[0045] In some embodiments, there are two rails 103 and two rail seats 101. The two rails 103 are respectively disposed on both sides of the pedal body 102, and the two rail seats 101 are disposed at intervals in a first direction and are respectively connected to the two rails 103. Using two rail seats 101 can minimize the installation space occupied by the pedal assembly on the carrier plate 2 while ensuring the support effect for the movable unit.

[0046] It is understandable that in actual use scenarios, the carrier plate 2 can take on different structures, and this utility model does not limit this.

[0047] For example, in Figure 1 In the illustrated embodiment, the carrier plate 2 is movably disposed at the bottom of the operator's cab and is specifically designed for mounting the pedal assembly. A push rod 3 is also connected to the carrier plate 2, which can push the carrier plate 2 to move horizontally. Alternatively, the carrier plate 2 can be a pedal located one level above the pedal assembly in a multi-stage pedal assembly, or it can be the floor of the operator's cab.

[0048] In some embodiments, the rail base 101 includes at least two first connecting portions, which are spaced apart in a second direction, and the rail 103 is connected to the first connecting portions. The multiple first connecting portions form multiple fulcrums of the rail 103, which helps to reduce the length of the cantilever beam formed by the rail 103, better support the movable unit, and ensure the safety of personnel when stepping on it and the smoothness of its extension and retraction.

[0049] Optionally, the rail base 101 includes two first connecting parts. The provision of two first connecting parts helps to reduce the size of the rail base 101 in the second direction while ensuring the support effect, thereby reducing the installation space occupied by the pedal assembly on the carrier plate 2.

[0050] In some embodiments, the end of the track 103 near the carrier plate 2 protrudes from the pedal body 102. It is understood that the portion extending beyond the carrier plate 2 constitutes the footing area of ​​the pedal body 102, while the portion not extending beyond the carrier plate 2 cannot be used for footing and occupies mounting space on the carrier plate 2 when retracted. By making the track 103 protrude from the pedal body 102, the rail base 101 can move along the track 103 beyond the pedal body 102 during extension, thereby reducing the portion of the pedal body 102 that cannot extend beyond the carrier plate 2. This reduces the size of the pedal body 102 while maintaining the footing area during extension, helping the pedal body 102 avoid other mechanisms on the carrier plate 2.

[0051] Optionally, in some embodiments, the maximum spacing of the first connecting portion is less than the length of the track 103 extending out of the pedal body 102, so that in the extreme extension state, the first connecting portion can be entirely located in the portion of the track 103 protruding out of the pedal body 102, which helps to make the pedal body 102 fully extend out of the carrier plate 2 and make fuller use of the surface of the pedal body 102.

[0052] In some embodiments, the rail base 101 includes a bracket 1011 and a rolling element 1012. The bracket 1011 is disposed on the carrier plate 2, and the rolling element 1012 is rotatably disposed on the bracket 1011. The rail 103 is provided with a rail groove, which is open on one side facing the first direction, and the rolling element 1012 is embedded in the rail groove.

[0053] The use of rolling connection can reduce running resistance and improve the smoothness of extension and retraction. At the same time, the rolling element 1012 is embedded in the track groove, which helps to better withstand the force from the moving unit.

[0054] For example, in some embodiments, the bracket 1011 is located at the bottom of the carrier plate 2, the bracket 1011 includes a second connecting portion connected to the carrier plate 2, and the rolling element 1012 is located in a second direction on the side of the second connecting portion away from the carrier plate 2.

[0055] Setting the rail base 101 at the bottom of the carrier plate 2 helps to better conceal the pedal assembly when it is retracted. When the pedal body 102 is extended for use, the force of the movable unit acts on the rail base 101 through the rolling element 1012. The carrier plate 2 generates a reaction force on the movable unit through the second connecting part. By setting the rolling element 1012 on the side of the second connecting part away from the carrier plate 2, the lever arm length between the movable unit and the rolling element 1012 can be reduced, the torque generated by the force can be reduced, and the load-bearing capacity of the rail base 101 can be improved.

[0056] In some embodiments, refer to Figure 2 and Figure 3The rail base 101 also includes a roller 1013, which includes a first shaft section, a stepped portion and a second shaft section arranged sequentially along its own axial direction. The diameter of the stepped portion is larger than that of the first shaft section and the second shaft section. The first shaft section is fixedly mounted on the bracket 1011, and the rolling element 1012 is rotatably sleeved on the second shaft section.

[0057] The rolling element 1012 is rotatably mounted via the roller 1013. The stepped portion separates the rolling element 1012 from the bracket 1011 to prevent the bracket 1011 from interfering with the rotation of the rolling element 1012. On the other hand, it also keeps the bracket 1011 away from the track 103 to prevent the bracket 1011 and the track 103 from interfering with each other during operation.

[0058] At this time, refer to Figure 3 In some embodiments, the first and second shaft segments of the roller 1013 may be provided with external threads, and the roller 1013 and the rolling element 1012 are installed by a nut. The rolling element 1012 may be a bearing, with the inner ring of the bearing secured by a nut and a stepped portion, while the outer ring of the bearing can rotate freely.

[0059] To prevent mistaken identity, in some embodiments, the first and second shaft segments may have different diameters and / or lengths to quickly determine the mounting orientation of the roller 1013 during assembly.

[0060] It should be noted that, in addition to the rolling element 1012, the rail base 101 can also cooperate with the rail 103 in other ways to achieve support for the rail 103 and relative movement between the rail base 101 and the rail 103. For example, as mentioned above, the rail 103 can also cooperate with the slider to achieve extension and retraction, in which case the rail 103 can be a linear guide rail.

[0061] In some embodiments, the bracket 1011 includes a first limiting portion, and the pedal body 102 includes a second limiting portion 1021. The first limiting portion is located on the side of the rolling element 1012 away from the carrier plate 2 in a second direction. The first limiting portion is used to contact and position the second limiting portion 1021 to limit the stroke of the active unit when it is retracted.

[0062] Setting the first limiting part as a limit can prevent the rolling element 1012 from dislodging from the track groove when retracting, thus improving the reliability of the pedal assembly. Since the second limiting part 1021 is located on the pedal body 102, the bracket 1011 does not directly hit the track 103 when the limit is set, which helps to reduce the impact on the track 103 and prevent the track 103 from deforming under force, thus reducing the smoothness of extension and retraction.

[0063] In some embodiments, the pedal body 102 further includes anti-slip blocks 1022, with a plurality of anti-slip blocks 1022 protruding in an array on the front side of the pedal body 102 to increase the friction when stepping on the pedal and improve the safety of the pedal body 102.

[0064] In some embodiments, the pedal assembly further includes a drive member 104 connected between the movable unit and the carrier plate 2, the drive member 104 being used to drive the movable unit to extend and retract in a second direction.

[0065] The driving unit 104 drives the movable unit to move, and the fixed unit carries the movable unit. By separating the structures responsible for carrying and driving, it helps to reduce the load on the driving unit 104, so as to select a relatively small driving unit 104 and thus avoid other structures on the carrier plate 2.

[0066] Optionally, in some embodiments, the drive member 104 is a telescopic cylinder, with one end of the telescopic cylinder mounted on the carrier plate 2 and the other end mounted on the movable unit. Using a telescopic cylinder as the drive member 104 allows the connection between the drive member 104 and the movable unit to extend beyond the carrier plate 2, thereby increasing the extension distance of the pedal body 102 and making fuller use of the surface of the pedal body 102.

[0067] Secondly, this utility model also provides a working machine, including a control room and a pedal assembly provided by this utility model, the pedal assembly being disposed at the entrance and exit of the control room.

[0068] The pedal assembly includes the pedal assembly provided by this utility model, and therefore has the beneficial effects brought by the pedal assembly, which will not be elaborated here.

[0069] The pedal assembly can be mounted in the operator's cab in different ways. Exemplarily, in some embodiments, the operator's cab includes a carrier plate 2 located at the entrance / exit of the operator's cab, and the pedal assembly is mounted on the carrier plate 2 (e.g., it can be mounted at the bottom of the carrier plate 2). Further, the working machinery may also include a push rod 3, with the carrier plate 2 movably mounted in the operator's cab. The push rod 3 connects the carrier plate 2 and other structures of the operator's cab for driving the carrier plate 2 to move, and the pedal assembly avoids the push rod 3.

[0070] In some embodiments, the working machinery further includes a pedal assembly disposed at the bottom of the carrier plate 2, the pedal assembly being part of the pedal assembly and being the uppermost part of the pedal assembly.

[0071] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A pedal assembly, characterized in that, include: A fixing unit is used to be mounted on a carrier plate (2), the fixing unit comprising at least two rail seats (101), each of the rail seats (101) being spaced apart in a first direction; The active unit includes a pedal body (102) and at least two tracks (103), each of the tracks (103) being spaced apart on the pedal body (102) in a first direction, the tracks (103) extending in a second direction perpendicular to the first direction, a rail seat (101) connecting to and carrying the tracks (103), and the rail seat (101) and the tracks (103) being able to move relative to each other in the second direction.

2. The pedal assembly according to claim 1, characterized in that, The rail base (101) includes at least two first connecting parts, which are spaced apart in the second direction, and the rail (103) is connected to the first connecting parts.

3. The pedal assembly according to claim 2, characterized in that, One end of the track (103) near the carrier plate (2) protrudes from the pedal body (102), and the maximum distance between the first connecting parts is less than the length of the track (103) extending out of the pedal body (102).

4. The pedal assembly according to claim 1, characterized in that, The rail base (101) includes a bracket (1011) and a rolling element (1012). The bracket (1011) is disposed on the carrier plate (2), and the rolling element (1012) is rotatably disposed on the bracket (1011). The track (103) is provided with a track groove, which is open on the side facing the first direction, and the rolling element (1012) is embedded in the track groove.

5. The pedal assembly according to claim 4, characterized in that, The bracket (1011) is located at the bottom of the carrier plate (2). The bracket (1011) includes a second connecting part that connects to the carrier plate (2). The rolling element (1012) is located on the side of the second connecting part away from the carrier plate (2) in the second direction.

6. The pedal assembly according to claim 4, characterized in that, The rail base (101) further includes a roller (1013), which includes a first shaft segment, a stepped portion and a second shaft segment arranged sequentially along its own axial direction. The diameter of the stepped portion is larger than that of the first shaft segment and the second shaft segment. The first shaft segment is fixedly mounted on the bracket (1011), and the rolling element (1012) is rotatably sleeved on the second shaft segment.

7. The pedal assembly according to claim 4, characterized in that, The bracket (1011) includes a first limiting part, and the pedal body (102) includes a second limiting part (1021). The first limiting part is located on the side of the rolling element (1012) away from the carrier plate (2) in the second direction. The first limiting part is used to contact and position the second limiting part (1021) to limit the stroke of the active unit when it is retracted.

8. The pedal assembly according to claim 1, characterized in that, It also includes a drive unit (104) connected between the movable unit and the carrier plate (2), the drive unit (104) being used to drive the movable unit to extend and retract in the second direction.

9. The pedal assembly according to claim 8, characterized in that, The driving component (104) is a telescopic cylinder, one end of which is mounted on the carrier plate (2), and the other end of which is mounted on the movable unit.

10. A type of operating machinery, characterized in that, include: The control room includes a carrier plate (2) located at the entrance and exit of the control room; The pedal assembly according to any one of claims 1 to 9 is disposed on the carrier plate (2).

Images