Stop device, brake, drive axle and vehicle

Abstract

The utility model relates to a stopping device, a brake, a drive axle and a vehicle, the stopping device comprises a shell with an in-shell space, a stopping piece used for limiting the relative position of a piece to be stopped relative to the shell and a supporting piece used for providing supporting force for the stopping piece, and the stopping piece and the supporting piece are both arranged in the shell space; according to the technical scheme, under the action of the supporting force provided by the supporting piece to the stopping piece, the external force borne by the stopping piece is overcome through the supporting force provided by the supporting piece, combination of the stopping piece and the shell is kept, and the situation that the stopping piece is separated from the shell under the action of the external force is avoided; and the to-be-stopped part can be continuously stopped, and stable use of the to-be-stopped part is guaranteed.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a stop device, a brake, a drive axle, and a vehicle. Background Technology

[0002] In related technologies, it is necessary to restrict the installation position of some stop components (such as the brake backing plate of a brake) to prevent excessive displacement. Therefore, some stop components are set to restrict the position of the stop components. However, in some extreme cases, the stop components may be subjected to external forces, causing them to deform and resulting in failure of the stop components. For example, the stop components may come out of the housing, causing the stopping effect on the brake backing plate to fail. Utility Model Content

[0003] This application provides a stop device that improves the stopping stability of the stop member, thereby at least partially solving the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a stop device is provided, comprising: According to the first aspect of this application, a stop device is provided, the stop device comprising:

[0005] A shell, having an internal space;

[0006] A stop member, used to define the relative position of the stop member with respect to the housing, and coupled to the housing; and

[0007] A support member is provided to the stop member to keep the stop member engaged with the housing under the action of the support member;

[0008] The stop and the support are located within the shell space.

[0009] Optionally, along a projection plane parallel to the first direction, the projection plane of the outer peripheral contour of the support member at least partially overlaps with the projection plane of the outer peripheral contour of the stop member, so that the support member can provide a supporting force to the stop member at least in the second direction.

[0010] Wherein, the first direction intersects with the second direction.

[0011] Optionally, along the first direction, the support member and the stop member are either fixedly connected or movably connected.

[0012] Optionally, the stop defines a central space extending along a first direction;

[0013] At least a portion of the support member contacts the boundary of the central space defined by the stop member.

[0014] Optionally, the stop is located between the stop members in the second part of the support member.

[0015] Optionally, the stop defines a central space extending along a first direction;

[0016] When the support member and the stop member are fixedly connected, the first part of the support member passes through the central space to form a fixed connection with the stop member, and the second part is located on the side of the stop member away from the stop member along the first direction, so that the stop member is located between the second part of the support member and the stop member.

[0017] Optionally, along a projection plane perpendicular to the first direction, the projection of the outer periphery of the first portion of the support member lies within the projection of the outer periphery of the second portion, and the projection of the outer periphery of the second portion lies within the projection of the outer periphery of the support member.

[0018] Optionally, the first part and the second part are integrally formed.

[0019] Optionally, along the first direction, the stop member has a first end face opposite to the support member, and the support member has a second end face opposite to the stop member;

[0020] Along the first direction, the distance between the first end face and the second end face is defined as the first dimension, and the thickness of the stop member is defined as the second dimension. Then, the ratio of the first dimension to the second dimension ranges from 1.2 to 1.3.

[0021] Optionally, the outer peripheral wall of the support member around the first direction is spaced apart from the inner peripheral wall of the housing.

[0022] Optionally, the housing has a first engagement portion and the stop has a second engagement portion. When the first engagement portion and the second engagement portion are engaged, the position of the stop relative to the housing is restricted so that the stop remains engaged with the housing.

[0023] Optionally, the first joint is constructed as a groove structure formed on the inner peripheral wall of the housing.

[0024] Optionally, the support member has a continuous ring structure.

[0025] Optionally, the stop component is configured as a brake backplate of a brake.

[0026] According to a second aspect of this application, a brake as described above is provided, the brake comprising:

[0027] The stop device is the stop device described above.

[0028] According to a third aspect of this application, a drive axle is provided, including a stop device as described above or a brake as described above.

[0029] According to a fourth aspect of this application, a vehicle is provided, including a stop device as described above, a brake as described above, or a drive axle as described above.

[0030] The beneficial effect of this application is that it provides a stopping device that improves the stopping stability of the stop member.

[0031] More specifically, some embodiments of this application may produce the following specific beneficial effects:

[0032] In the stopping device of this application embodiment, the stopping device includes: a housing having an internal space, a stopping member for defining the relative position of the part to be stopped relative to the housing, and a support member for providing support force to the stopping member. The stopping member and the support member are both disposed within the housing space, and the stopping member is connected to the housing. Through the above technical solution, under the action of the support force provided by the support member to the stopping member, the external force on the stopping member is overcome by the support force provided by the support member, so that the stopping member is kept connected to the housing, and the stopping member is prevented from separating from the housing under the action of external force. It can play a continuous stopping role for the part to be stopped and ensure the stable use of the part to be stopped.

[0033] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0036] Figure 1 This is a schematic diagram of the overall structure of the drive bridge provided in an exemplary embodiment of this application;

[0037] Figure 2 This is an internal cross-sectional view of the drive axle provided in an exemplary embodiment of this application;

[0038] Figure 3 This is provided in an exemplary embodiment of this application. Figure 2 Enlarged structural diagram at point A in the diagram;

[0039] Figure 4 This is a schematic diagram of the connection structure between the stop member, the support member, and the fasteners provided in an exemplary embodiment of this application;

[0040] Figure 5 This is an exploded view of the connection structure between the stop member, the support member, and the fasteners provided in an exemplary embodiment of this application.

[0041] Figure 6 This is a schematic diagram of the structure of the support member provided in an exemplary embodiment of this application;

[0042] Figure 7 yes Figure 3 Enlarged structural diagram at point B in the diagram;

[0043] Figure 8 This is a schematic diagram of the overall vehicle structure provided in an exemplary embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100. Stop device;

[0046] 110. Shell; 110a. Internal space of the shell; 111. First joint;

[0047] 120. Stop; 120a. Central space; 121. Second joint; 122. Fourth end face; 123. Fifth end face;

[0048] 130. Support component; 131. First part; 132. Second part; 133. Second end face; 134. Third end face;

[0049] 140. Fasteners;

[0050] L1, first dimension; L2, second dimension;

[0051] g. Interval;

[0052] 10. Brake; 101. Stopping component; 1011. First end face; 102. Brake spring;

[0053] 1. Drive axle;

[0054] H. Vehicle. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0056] Reference Figure 3 As shown, for ease of explanation, the corresponding figures use the directions of up, down, left, and right to illustrate the relative positional relationships between the parts in this application, which should not be construed as limitations on absolute positions.

[0057] Furthermore, in this application, the first direction corresponds to the left-right direction and the second direction corresponds to the up-down direction, as above. Here, the first direction indicates the front-back direction only for the convenience of introducing the specific embodiments of this application. There is no absolute correspondence between the first direction and the left-right direction. Similarly, there is no absolute correspondence between the second direction and the up-down direction.

[0058] The first and second directions in this application are only for expressing relative positional relationships; they merely indicate approximate locations rather than absolute geometric relationships.

[0059] In related technologies, it is necessary to limit the installation position of some stop members 101 (such as the brake backing plate of the brake 10) to prevent excessive displacement. Therefore, some stop members 120 are provided to limit the position of the stop members 101. However, in some extreme cases, the stop members 120 may be subjected to external forces, causing them to deform and fail to stop the stop members 101. For example, the stop members 120 may come out of the housing 110, resulting in the failure of the stopping effect on the brake backing plate.

[0060] The external force on the stop member 120 can be the preload force applied by the brake spring 102 to the brake back plate of the brake 10, or the deformation caused by the stop member 120 after being subjected to a large vibration force, resulting in the separation between the stop member 120 and the housing 110. Alternatively, the joint part on the housing 110 that is connected to the stop member 120 may be a groove structure. If the machining accuracy of the groove structure is incorrect, the stop member 120 may come out of the groove structure and fail to stop the brake back plate.

[0061] The stop 120 is constructed as a retaining ring with a radial opening. When subjected to external force, the two ends of its opening will approach each other, causing the stop 120 to shrink and deform, and then fall off the housing 110, resulting in failure.

[0062] The stop 120 in this application can be the brake retaining ring in the brake 10.

[0063] According to a first aspect of this application, a stop device 100 is provided, with reference to... Figures 1 to 7 The stop device 100 includes: a housing 110, a stop member 120, and a support member 130.

[0064] The housing 110 has an internal space 110a, in which the stop 120 and the support 130 are both disposed.

[0065] The stop member 120 is used to define the relative position of the stop member 101 relative to the housing 110 and is coupled to the housing 110. The support member 130 is used to provide a supporting force to the stop member 120 so that the stop member 120 remains coupled to the housing 110 under the supporting force provided by the support member 130.

[0066] Through the above technical solution, under the supporting force provided by the support member 130 to the stop member 120, the supporting force provided by the support member 130 overcomes the external force on the stop member 120, thereby realizing the connection between the stop member 120 and the housing 110, preventing the stop member 120 from separating from the housing 110 under the action of external force, and enabling it to continuously stop the stop member 101, ensuring the stable use of the stop member 101.

[0067] It should be noted that the external force on the stop 120 is the same as the external force described above, and will not be repeated here.

[0068] The supporting force provided by the support member 130 can provide a certain support for the stop member 120, preventing the stop member 120 from detaching from the housing 110, thus preventing the stop member 120 from detaching, that is, preventing the brake member from separating from the housing 110.

[0069] In some embodiments, along a projection plane parallel to the first direction, the projection plane of the outer peripheral contour of the support member 130 at least partially overlaps with the projection plane of the outer peripheral contour of the stop member 101, and the support member 130 is capable of providing support force to the stop member 120 at least in the second direction, wherein the first direction intersects the second direction.

[0070] By projecting the outer periphery of the support member 130 along a projection plane parallel to the first direction, the projection plane of the outer periphery of the stop member 101 is at least partially overlapped with the projection plane of the outer periphery of the stop member 101, so as to ensure that the support member 130 can provide a supporting force to the stop member 120 at least in the second direction, so that the stop member 120 remains engaged with the housing 110 under the force of the supporting force provided by the support member 130 and does not separate from the housing 110.

[0071] Based on this, the first direction and the second direction are arranged to intersect, thereby enabling the support member 130 to provide support force to the stop member 120.

[0072] It should be noted that the first direction can be set at an angle to the second direction or it can be set perpendicular to it. In this application, the first direction is set perpendicular to the second direction as an example.

[0073] In some embodiments, reference Figure 3 Along the first direction, the support member 130 and the stop member 101 are fixedly or movably connected.

[0074] By fixing the support member 130 to the stop member 101 along the first direction, the support member 130 can be more stable under the action of the stop member 101. The reason for the greater stability is that the stop member 101 is heavier than the stop member 120. Therefore, the support member 130 can be fixedly connected to the stop member 101. At the same time, along the projection plane parallel to the first direction, the projection plane of the outer periphery of the support member 130 and the projection plane of the outer periphery of the stop member 101 at least partially overlap. This further improves the ability of the support member 130 to provide stable support force to the stop member 120 at least in the second direction, which can prevent the inner diameter of the stop member 120 from shrinking in the radial direction, thereby ensuring that the stop member 120 can remain connected to the housing 110.

[0075] It should be noted that in order to prevent the inner diameter of the stop 120 from shrinking in the radial direction, that is, to prevent the two ends of the opening of the stop 120 from getting close to each other, the function of the support 130 is to keep the stop 120 in a supported state, so as to prevent it from deforming and falling off the housing 110.

[0076] By making the support member 130 and the stop member 101 movably connected, it is easy to install and disassemble, and has greater flexibility.

[0077] It should be noted that the movable connection between the support member 130 and the stop member 101 can be configured such that the support member 130 and the stop member 101 are in contact but not connected by a connecting member, that is, the part of the support member 130 surrounding the support member 130 is used, that is, the two are connected by a sleeve.

[0078] The support member 130 and the stop member 101 can be fixedly connected by fasteners 140, which can be fastening bolts or welded.

[0079] In some embodiments, reference Figure 4 and Figure 5 The stop 120 defines a central space 120a extending along a first direction, and at least a portion of the support 130 contacts the boundary of the central space 120a defined by the stop 120.

[0080] By having at least a portion of the support member 130 contact the boundary of the central space 120a defined by the stop member 120, the overall structural complexity of the stop device 100 can be simplified. At the same time, the contact between the support member 130 and the stop member 120 defining the central space 120a can better transmit the supporting force and ensure the stability of the force transmission.

[0081] For example, the central space 120a is configured to communicate with the housing space 110a, and the central space 120a allows the drive shaft of the differential to pass through.

[0082] In some embodiments, reference Figure 3 The stop 120 is located between the second part 132 of the support 130 and the stop 101.

[0083] By positioning the stop 120 between the stop members 101 and the second portion 132 of the support 130, the stop 120 can be restricted by the second portion 132 of the support 130, thereby further improving the stability of the stop 120.

[0084] In some embodiments, reference Figure 3 The stop member 120 defines a central space 120a that extends along a first direction. When the support member 130 and the stop member 101 are fixedly connected, the first part 131 of the support member 130 passes through the central space 120a to form a fixed connection with the stop member 101. The second part 132 is located on the side of the stop member 120 away from the stop member 101 along the first direction, so that the stop member 120 is located between the second part 132 of the support member 130 and the stop member 101.

[0085] By passing the first part 131 of the support member 130 through the central space 120a to form a fixed connection with the stop member 101, and the second part 132 located on the side of the stop member 120 away from the stop member 101 along the first direction, the stop member 120 is located between the first part 131 and the second part 132 of the support member 130, which can ensure stable support for the stop member 120 and ensure the stability of the relative position and contact state between the stop member 101 and the housing 110.

[0086] In some embodiments, along a projection plane perpendicular to the first direction, the projection of the outer periphery of the first portion 131 of the support 130 lies within the projection of the outer periphery of the second portion 132, and the projection of the outer periphery of the second portion 132 lies within the projection of the outer periphery of the support 130.

[0087] Through the projection plane perpendicular to the first direction, the projection of the outer periphery of the first part 131 of the support member 130 is located within the projection of the outer periphery of the second part 132, and the projection of the outer periphery of the second part 132 is located within the projection of the outer periphery of the support member 130. Since the first part 131 of the support member 130 is fixedly connected to the stop member 101, when the second part 132 of the support member 130 contacts the stop member 120, the support member 130 will play a supporting role for the stop member 120, and at the same time, it will also play a limiting role for the stop member 120 in the first direction, which can further improve the stability of the stop member 120 in use.

[0088] In some embodiments, reference Figure 5 and Figure 6 The first part 131 and the second part 132 are integrally formed.

[0089] By integrally molding the first part 131 and the second part 132 of the support member 130, it is easy to install the entire support member 130 with the stop member 101 and the stop member 120. Furthermore, the entire support member 130 has no welding or splicing points, thus it can better withstand high stress and high load, and reduce deformation or damage caused by local stress concentration.

[0090] In some embodiments, along a first direction, the stop member 101 has a first end face 1011 opposite to the support member 130, and the support member 130 has a second end face 133 opposite to the stop member 101.

[0091] Along the first direction, the distance between the first end face 1011 and the second end face 133 is defined as the first dimension L1, and the thickness of the stop member 120 is defined as the second dimension L2. The ratio of the first dimension L1 to the second dimension L2 ranges from 1.2 to 1.3.

[0092] By setting the ratio of the first dimension L1 to the second dimension L2 to a range of 1.2 to 1.3, the stop 120 can be allowed to have a certain range of displacement in the first direction, which can absorb the vibration and impact on the stop 120 to a certain extent and reduce the noise and vibration of the overall structure.

[0093] Specifically, the second end face 133 is disposed at the end of the second part 132 of the support member 130, while the end face of the first part 131 of the support member 130 that passes through the end of the central space 120a is defined as the third end face 134, and the two ends of the stop member 120 along the first direction are defined as the fourth end face 122 and the fifth end face 123.

[0094] During initial installation, the third end face 134 is pressed against a portion of the first end face 1011 of the stop member 101, the fourth end face 122 is pressed against another portion of the first end face 1011 of the stop member 101, and a gap is reserved between the fifth end face 123 of the stop member 120 and the second end face 133 of the support member 130.

[0095] In a specific design, the thickness of the stop 120 can be set to 4mm, that is, the second dimension L2 is 4mm. During the initial installation, a gap of 0.5mm to 1mm is reserved between the fifth end face 123 of the stop 120 and the second end face 133 of the support 130. Therefore, the stop 120 can be connected with the housing 110 to prevent it from falling off.

[0096] In some embodiments, reference Figure 7 The support member 130 has a gap g between its outer peripheral wall surface in the first direction and the inner peripheral wall surface of the housing 110.

[0097] By having a gap g between the outer peripheral wall of the support member 130 and the inner peripheral wall of the housing 110 in the first direction, this technical solution can avoid generating large frictional forces between the support member 130 and the housing 110.

[0098] In some embodiments, the housing 110 has a first engagement portion 111 and the stop member 120 has a second engagement portion 121. When the first engagement portion 111 and the second engagement portion 121 are engaged, the position of the stop member 120 relative to the housing 110 is restricted so that the stop member 120 remains engaged with the housing 110.

[0099] At the same time, the engagement of the first joint 111 and the second joint 121 can limit the position of the stop member 120 relative to the housing 110, further ensuring the stable engagement of the housing 110 and the stop member 120.

[0100] In some embodiments, the first joint 111 is configured as a groove structure formed on the inner peripheral wall of the housing 110.

[0101] The width of the groove structure in this application along the first direction is greater than the thickness of the stop member 120 along the first direction.

[0102] In some embodiments, the support member 130 has a continuous ring structure, which can prevent the support member 130 from shrinking significantly after being subjected to external force.

[0103] Specifically, the support member 130 can be made of materials such as metal, non-metal, or plastic, and the support member 130 is a closed-loop structure.

[0104] In some embodiments, the stop 101 is configured as the brake backplate of the brake 10.

[0105] The stop 120, through its tight fit with the brake backing plate of the brake 10, ensures that the brake backing plate is maintained in the correct position after assembly. The supporting force of the support 130 can prevent the stop 120 from shifting position due to factors such as vibration and impact during long-term use, thereby ensuring the stability and reliability of the brake backing plate of the brake 10.

[0106] According to the second aspect of this application, reference to Figure 2 A brake 10 as described above is provided. The brake 10 includes a stop device 100, which is the stop device 100 described in the above embodiment.

[0107] The brake 10 has all the beneficial effects of the aforementioned stop device 100, which will not be repeated here.

[0108] Furthermore, the brake 10 is more stable and reliable during use.

[0109] The brake 10 of this application includes brake spring 102, brake back plate and other brake components. The installation between the components of the brake components and the corresponding braking principle are the relevant braking principles in the prior art, and will not be described in detail here.

[0110] According to the third aspect of this application, with reference to Figure 1 A drive axle 1 is provided, including a stop device 100 as described above or a brake 10 as described above.

[0111] The vehicle H has all the beneficial effects of the aforementioned stop device 100 or brake 10, which will not be repeated here.

[0112] The drive axle 1 in this application can be a motor drive axle 1.

[0113] According to the fourth aspect of this application, with reference to Figure 8 A vehicle H is provided, including a stop device 100 as described above, a brake 10 as described above, or a drive axle 1 as described above.

[0114] The vehicle H has all the beneficial effects of the aforementioned stop device 100, which will not be repeated here.

[0115] The vehicle H has all the beneficial effects of the aforementioned brake 10, which will not be repeated here.

[0116] The vehicle H has all the beneficial effects of the aforementioned drive axle 1, which will not be repeated here.

[0117] The vehicle H can be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions on it.

[0118] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0119] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0120] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0121] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A stop device, characterized in that The stop device comprises: a housing having a housing inner space; a stop piece for defining a relative position of the stop piece relative to the housing and being combined with the housing; and a support piece for providing a support force to the stop piece to keep the stop piece combined with the housing under the action of the support piece; wherein the stop piece and the support piece are located in the housing inner space.

2. The stop device according to claim 1, wherein a projection of an outer peripheral contour of the support piece on a projection plane parallel to the first direction at least partially overlaps a projection of an outer peripheral contour of the stop piece on the projection plane to enable the support piece to provide the support force to the stop piece at least in the second direction; wherein the first direction intersects the second direction.

3. Stopper device according to claim 2, characterized in that The support piece and the stop piece constitute a fixed connection or a movable connection in the first direction.

4. Stopper device according to any one of claims 1 to 3, characterized in that The stop piece defines a middle space penetrating in the first direction; At least a part of the support piece contacts a boundary of the middle space defined by the stop piece.

5. Stop device according to any one of claims 1 to 3, characterized in that The stop piece is located between the second part of the support piece and the stop piece.

6. Stopper device according to claim 5, characterized in that The stop piece defines a middle space penetrating in the first direction; When the support piece and the stop piece constitute a fixed connection, a first part of the support piece penetrates the middle space to constitute the fixed connection with the stop piece, and a second part of the support piece is located on a side of the stop piece away from the stop piece in the first direction, so that the stop piece is located between the second part of the support piece and the stop piece.

7. Stopper device according to claim 5, characterized in that A projection of an outer peripheral contour of the first part of the support piece on a projection plane perpendicular to the first direction is located within a projection of an outer peripheral contour of the second part of the support piece, and the projection of the outer peripheral contour of the second part is located within a projection of an outer peripheral contour of the support piece.

8. Stopper device according to claim 5, characterized in that The first part and the second part are integrally formed.

9. Stopper device according to claim 5, characterized in that The stop piece has a first end surface opposite to the support piece in the first direction, and the support piece has a second end surface opposite to the stop piece in the first direction; A distance between the first end surface and the second end surface in the first direction is defined as a first size, and a thickness of the stop piece is defined as a second size, and a ratio of the first size to the second size is in a range of 1.2 to 1.

3.

10. Stopper device according to any one of claims 1 to 3, characterized in that An outer peripheral wall surface of the support piece around the first direction has a gap with an inner peripheral wall surface of the housing.

11. Stopper device according to claim 5, characterized in that The housing has a first combining part, and the stop piece has a second combining part, and when the first combining part and the second combining part are combined, the position of the stop piece relative to the housing is limited to keep the stop piece combined with the housing.

12. Stopper device according to claim 11, characterized in that The first combining part is configured as a groove structure opened in the inner peripheral wall surface of the housing.

13. Stop device according to claim 12, characterized in that The support piece has a continuous annular structure.

14. Stopper according to any one of claims 1 to 3, characterized in that The stop piece is configured as a brake back plate of a brake.

15. A brake characterized by The brake comprises: a stop device as claimed in any one of claims 1 to 14.

16. A drive axle characterized by The drive axle comprises the stop device as claimed in any one of claims 1 to 14 or the brake as claimed in claim 15.

17. A vehicle characterized by comprising: including a stop device as claimed in any one of claims 1 to 14 or a brake as claimed in claim 15 or a drive axle as claimed in claim 16.

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