Vehicle brake structure and low speed vehicle

Abstract

The application provides a carrier brake structure and a low-speed carrier. The carrier brake structure comprises a wheel, a wheel frame and a locking component. The wheel is provided with a slot. The wheel frame is rotationally connected with the wheel. The locking component is rotationally connected with the wheel frame. The locking component comprises a pedal part and a locking column arranged on the inner side of the pedal part. The pedal part comprises an elastic part and a rotationally connected part. The elastic part is connected with the locking column and the rotationally connected part respectively. The carrier brake structure is arranged on the side of the wheel, thereby avoiding the abrasion of the tire, improving the parking stability of the wheel brake, and setting the pedal to realize the locking and unlocking of the wheel. The user does not need to bend down, and the convenience of locking and unlocking the wheel is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle wheel brakes, specifically to a vehicle braking structure and a low-speed vehicle. Background Technology

[0002] Currently, low-speed vehicles often use tire brakes to lock and unlock the wheels. However, tire brakes wear down the tires over time. Furthermore, due to the complexity of the operating environment, mud, grass, and other debris can get mixed between the tire brake structure and the wheel frame, which reduces the braking stability of the tire brake system. Utility Model Content

[0003] The purpose of this application is to provide a vehicle braking structure and a low-speed vehicle to solve the problem of low braking stability of low-speed vehicles.

[0004] In a first aspect, this application provides a vehicle braking structure, including: a wheel, the wheel being provided with a slot;

[0005] A wheel frame, which is rotatably connected to the wheel;

[0006] A bicycle locking assembly is rotatably connected to the wheel frame. The bicycle locking assembly includes a pedal portion, a locking post disposed on the inner side of the pedal portion, and a sliding portion disposed on the outer side of the pedal portion. The pedal portion includes a spring portion and a rotating connection portion, and the spring portion is respectively connected to the sliding portion and the rotating connection portion.

[0007] When the pedal is rotated downwards under force, the locking pin slides into the slot and the elastic part is in a stretched state, locking the wheel. When the pedal is rotated upwards under force, the locking pin slides out of the slot and the elastic part is in its original length state, unlocking the wheel.

[0008] The vehicle braking structure provided in this application is located on the side of the wheel, which avoids tire wear, improves the parking stability of the wheel brake, and provides a pedal to lock and unlock the wheel without requiring the user to bend over, thus improving the convenience of locking and unlocking the wheel.

[0009] In one embodiment, the wheel includes a roller and a spline portion disposed on the side of the roller;

[0010] The spline portion includes a connecting portion and a plurality of slots, the plurality of slots being arranged circumferentially on the connecting portion.

[0011] In one embodiment, the spline portion is disposed on the outer or inner side of the wheel;

[0012] The locking assembly is located on the outside or inside of the wheel;

[0013] The spline portion and the locking assembly are located on the same side of the wheel.

[0014] In one embodiment, the wheel frame includes a top cover, an inner side plate and an outer side plate vertically connected to the top cover;

[0015] The outer side plate is rotatably connected to the vehicle locking assembly, or...

[0016] The inner side plate is rotatably connected to the vehicle locking assembly.

[0017] In one embodiment, the locking assembly includes a sliding portion disposed on the outer side of the locking assembly;

[0018] The sliding part includes a sliding shaft and a locking part connected to the sliding shaft;

[0019] The locking part is a cylinder, and the sliding shaft is a cylinder;

[0020] The diameter of the locking part is larger than the diameter of the sliding shaft.

[0021] In one embodiment, the wheel frame includes a positioning groove; the locking part is engaged with the outside of the positioning groove;

[0022] The positioning groove provides space for the sliding part to move.

[0023] In one embodiment, the wheel frame includes a connecting hole, and a fixing part that mates with the rotating connecting part is provided at the connecting hole.

[0024] In one embodiment, the wheel frame includes a fixing part that engages with the rotating connection part.

[0025] In one embodiment, the fixing part is welded to the wheel frame.

[0026] In one embodiment, the wheel frame includes a limiting part, which is disposed on one side of the inner side plate or the outer side plate;

[0027] The limiting part is used to restrict the rotation of the brake assembly.

[0028] In one embodiment, the vehicle braking structure further includes a spring force sensor, which is used to acquire spring force data of the spring force component.

[0029] Secondly, this application provides a low-speed vehicle, which includes the aforementioned vehicle braking structure. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in 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.

[0031] Figure 1 This is a perspective view of a vehicle braking structure provided in an embodiment of this application;

[0032] Figure 2 This is a perspective view of another vehicle braking structure provided in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram of a wheel provided in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of a wheel frame provided in an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of a braking assembly provided in an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of another braking assembly provided in an embodiment of this application;

[0037] Figure 7 This is a schematic diagram of a low-speed vehicle provided in an embodiment of this application;

[0038] Figure 8 This is a schematic diagram of another low-speed vehicle provided in the embodiments of this application. Detailed Implementation

[0039] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0042] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of facilitating the description and simplification, and does not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately varied depending on the orientation of the constituent elements being described. Therefore, the use of terms not limited to those described in the specification may be appropriately replaced as needed.

[0043] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the meaning of these terms in this disclosure as appropriate.

[0044] Please refer to Figures 1-8 , Figure 1 This is a perspective view of a vehicle braking structure provided in an embodiment of this application; Figure 2 This is a perspective view of another vehicle braking structure provided in the embodiments of this application; Figure 3 This is a schematic diagram of a wheel provided in an embodiment of this application; Figure 4 This is a schematic diagram of a wheel frame provided in an embodiment of this application; Figure 5 This is a schematic diagram of a braking assembly provided in an embodiment of this application; Figure 6 This is a schematic diagram of another braking assembly provided in an embodiment of this application; Figure 7 This is a schematic diagram of a low-speed vehicle provided in an embodiment of this application; Figure 8 This is a schematic diagram of another low-speed vehicle provided in the embodiments of this application.

[0045] This application provides a vehicle braking structure 1, including:

[0046] Wheel 10, wheel 10 is provided with slot 122;

[0047] Wheel frame 20, which is rotatably connected to the wheel 10;

[0048] A bicycle locking assembly 30 is rotatably connected to the wheel frame 20. The bicycle locking assembly 30 includes a pedal part 31 and a locking post 32 disposed inside the pedal part 31. The pedal part 31 includes a spring part 311 and a rotating connection part 312. The spring part 311 is connected to a sliding part 33 and the rotating connection part 312 respectively.

[0049] The locking pin 32 is used in conjunction with the slot 122 to lock the wheel 10.

[0050] When the pedal part 31 is rotated downward under force, the locking pin 32 slides into the slot 122 and the elastic part 311 is in a stretched state, locking the wheel 10. When the pedal part 31 is rotated upward under force, the locking pin 32 slides out of the slot 122 and the elastic part 311 is in its original length state, unlocking the wheel 10.

[0051] The wheel frame 20 includes a connecting hole, and a fixing part that cooperates with the rotating connecting part 312 is provided at the connecting hole to realize the rotating connection between the wheel frame 20 and the locking assembly 30.

[0052] The rotating connection part 32 can be a screw, and the fixing part provided at the connection hole of the wheel frame 20 is a nut, thus realizing the rotating connection between the wheel frame 20 and the brake assembly 30.

[0053] In one embodiment, the fixing part is welded to the wheel frame 20.

[0054] When braking is required, the user presses the pedal 31, causing the locking assembly 20 to rotate and move downwards to the locked position. The locking pin 32 slides into the slot 122, and the elastic part 311 is stretched. The locking pin 32 locks the wheel 10, preventing it from rotating, thus locking the wheel 10. When braking is required to unlock, the user lifts the pedal 31, causing the locking assembly 20 to rotate and move upwards to the unlocked position. The locking pin 32 slides out of the slot 122, and the elastic part 311 returns to its original length, thus unlocking the wheel 10. Currently, existing technologies achieve braking by adding positioning springs, brake grooves, and unlocking grooves. The braking principle is as follows: the brake groove is located below the unlocking groove, and a spacer block is set between the brake groove and the unlocking groove. The positioning spring is connected to the elastic part 311. When the positioning spring is in the unlocking groove, the elastic part 311 is in its original length state. When the positioning spring is driven to slide down into the brake groove, the elastic part 311 is stretched, thus achieving braking. However, this principle requires adding positioning springs, brake grooves, and unlocking grooves, increasing costs. In addition, the positioning spring will wear down the spacer block during use. When the spacer block is worn to a high degree, it will cause brake failure and poor braking stability. The vehicle braking structure provided in this application embodiment does not require additional positioning springs or other hardware, and also solves the problem of poor braking stability caused by the wear of the spacer block in the prior art.

[0055] The vehicle braking structure provided in this application is located on the side of the wheel, which avoids tire wear, improves the parking stability of the wheel brake, and provides a pedal to lock and unlock the wheel without requiring the user to bend over, thus improving the convenience of locking and unlocking the wheel.

[0056] In one embodiment, the wheel 10 includes a roller 11 and a spline portion 12 disposed on the side of the roller 11; the spline portion 12 includes a connecting portion 121 and a plurality of slots 122, the plurality of slots 122 being circumferentially disposed on the connecting portion 121.

[0057] The multiple slots 122 are distributed at intervals, and there is no limit to the distance between adjacent slots 122, nor is there a limit to the size of the slots 122.

[0058] In one embodiment, the spline portion 12 is disposed on the outer or inner side of the wheel 10; the locking assembly 30 is disposed on the outer or inner side of the wheel 10; and the spline portion 12 and the locking assembly 30 are disposed on the same side of the wheel 10.

[0059] Please refer to Figure 1 , Figure 1 This is a perspective view of a vehicle braking structure provided in an embodiment of this application. Figure 1The spline portion 12 is located on the outer side of the wheel 10, and the locking assembly 30 is located on the outer side of the wheel 10. Please refer to [link / reference]. Figure 2 , Figure 2 This is a perspective view of another vehicle braking structure provided in the embodiments of this application. Figure 2 The spline portion 12 is located on the inner side of the wheel 10, and the locking assembly 30 is located on the inner side of the wheel 10.

[0060] In one embodiment, the wheel frame 20 includes an upper cover 21, an outer side plate 22 and an inner side plate 23 vertically connected to the upper cover 21; the outer side plate 22 is rotatably connected to the locking assembly 30, or the inner side plate 22 is rotatably connected to the locking assembly 30.

[0061] When the locking assembly 30 is located on the outer side of the wheel 10, the outer side plate 22 is rotatably connected to the locking assembly 30; when the locking assembly 30 is located on the inner side of the wheel 10, the inner side plate 23 is rotatably connected to the locking assembly 30.

[0062] In one embodiment, the locking assembly 30 includes a sliding portion 33 disposed on the outer side of the locking assembly 30; the sliding portion 33 includes a sliding shaft 331 and a locking portion 332 connected to the sliding shaft 331; the locking portion 332 is a cylinder, and the sliding shaft 331 is a cylinder; the diameter of the locking portion 332 is larger than the diameter of the sliding shaft 331.

[0063] In one embodiment, the wheel frame 20 includes a positioning groove 24; the locking part 332 is engaged on the outside of the positioning groove 24; the positioning groove 24 provides space for the sliding part 32 to move.

[0064] The locking part 332 is locked on the outside of the positioning groove 24, and the sliding part 33 slides in the positioning groove 24, so that the sliding part 33 slides along a predetermined route, reducing the risk of deviation and improving the stability of low-speed vehicle braking.

[0065] The locking part 332 can also be a screw.

[0066] In one embodiment, the wheel frame 20 includes a limiting part 25, which is disposed on one side of the inner side plate 23 or the outer side plate 22; the limiting part 25 is used to restrict the sliding of the brake assembly 30.

[0067] In order to prevent the brake assembly 25 from rotating excessively, a positioning part 25 is provided to lock the brake assembly 30.

[0068] In this embodiment, when the brake assembly 30 is located on the outer side of the wheel 10, the limiting part 25 is located on one side of the outer side plate 22; when the brake assembly 30 is located on the inner side of the wheel 10, the limiting part 25 is located on one side of the inner side plate 23. In one embodiment, the vehicle brake structure 1 further includes a spring force sensor, which is used to acquire the spring force data of the spring force part 311, and the spring force data is used to analyze the locking state of the wheel 10. The location of the spring force sensor is not limited.

[0069] For example, the elastic sensor is connected to the controller of the low-speed vehicle. The controller acquires the elastic data from the elastic sensor and determines the current elastic force value of the elastic part 311 based on the elastic data. If the current elastic force value is greater than or equal to a preset elastic force value, it is considered that the user has pressed the pedal part 31 in place, locking the wheel 10. If the current elastic force value is less than the preset elastic force value, it is considered that the user has not pressed the pedal part 31 in place, and the wheel is not locked. Optionally, the low-speed vehicle can be equipped with an indicator light. The controller is connected to the indicator light. If the current elastic force value is greater than or equal to the preset elastic force value, the controller instructs the indicator light to illuminate a first color light to indicate to the user that the wheel 10 is currently locked. If the current elastic force value is less than the preset elastic force value, the controller instructs the indicator light to illuminate a second color light to indicate to the user that the wheel 10 is not currently locked and that the user needs to press the pedal part 31 more forcefully. For example, the first color is green, and the second color is red. The location of the indicator light is not limited.

[0070] Optionally, the installation sequence of each component in the vehicle braking structure is as follows: one end of the elastic part 311 is installed on the sliding shaft 331, and the other end of the elastic part 311 is installed on the rotating connection part 312. The rotating connection part 312 is installed together with the fixing part at the connection hole of the wheel frame 20 to realize the rotatable connection between the brake assembly 30 and the wheel frame 20. Then, the locking part 332 is connected to the sliding shaft 331, and finally the wheel 10 is installed on the wheel frame 20.

[0071] In one embodiment, the vehicle braking structure 1 further includes a slope sensor and a slope display connected to the slope sensor. The slope sensor is used to collect slope data and display the slope. The wheel 10 includes two splined portions 12 disposed on the side of the roller 11 and a switching device. The first splined portion is disposed inside the second splined portion. The splines of both the first and second splined portions are retractable structures, with the splines extending out and forming slots 122 between adjacent splines. The first splined portion has more splines than the second splined portion, so that the first splined portion can form... The number of slots 122 exceeds the number of slots 122 that can be formed by the second spline section. The user can operate the switching device to switch between the first and second spline sections. For example, when the user observes that the slope sensor displays a large slope, the user manually operates the switching device to switch the currently operating second spline section to the first spline section. At this time, the splines of the second spline section retract, and the splines of the first spline section extend. When the user observes that the slope sensor displays a small slope, the user manually operates the switching device to switch the currently operating first spline section to the second spline section. At this time, the splines of the first spline section retract, and the splines of the second spline section extend. The positions of the slope sensor and the slope display are not limited.

[0072] Please see Figures 7-8 , Figure 7 This is a schematic diagram of a low-speed vehicle provided in an embodiment of this application. Figure 8 This is a schematic diagram of another low-speed vehicle provided in the embodiments of this application, wherein the low-speed vehicle 100 includes the aforementioned vehicle braking structure 1.

[0073] in, Figure 7 The low-speed vehicle shown has the splined section 12 and the locking assembly 30 located on the outer side of the wheel 10. Figure 8 The low-speed vehicle shown has a splined section 12 and a locking assembly 30 located inside the wheel 10.

[0074] The low-speed vehicle 100 may be equipped with one or more vehicle braking structures 1.

[0075] The low-speed vehicle 100 may include a controller connected to a spring sensor, which can analyze the locking status of the wheels based on the spring data.

[0076] The low-speed vehicle 100 may include indicator lights, and a controller is connected to the indicator lights. The controller can control the indicator lights to light up a first color, a second color, or other colors.

[0077] Among them, the low-speed vehicle 100 can be a campervan.

[0078] Optionally, the low-speed vehicle 100 may also include a microphone device. The controller is connected to the microphone device. When the current spring force value is analyzed to be greater than or equal to a preset spring force value, the controller instructs the microphone device to play a first preset voice message to inform the user that the wheels are currently locked. When the current spring force value is less than the preset spring force value, the controller instructs the microphone device to play a second preset voice message to inform the user that the wheels are not currently locked and that the user needs to press the pedal 31 harder. For example, the first preset voice message is "The wheels are locked" and the second preset voice message is "The wheels are not locked, please continue to press the pedal".

[0079] In one embodiment, the vehicle braking structure 1 includes: a wheel 10, the wheel 10 having a slot 122; a wheel frame 20 rotatably connected to the wheel 10; and a vehicle locking assembly 30 rotatably connected to the wheel frame 20. The vehicle locking assembly 30 includes a pedal portion 31 and a locking pin 32 disposed inside the pedal portion 31. The pedal portion 31 includes a spring portion 311 and a rotating connection portion 312. The spring portion 311 is connected to a sliding portion 33 and the rotating connection portion 312 respectively.

[0080] In one embodiment, the wheel frame 20 includes a connecting hole, at which a fixing part is provided to cooperate with the rotating connecting part 312, thereby realizing the rotatable connection between the wheel frame 20 and the locking assembly 30.

[0081] In one embodiment, the wheel 10 includes a roller 11 and a spline portion 12 disposed on the side of the roller 11; the spline portion 12 includes a connecting portion 121 and a plurality of slots 122, the plurality of slots 122 being circumferentially disposed on the connecting portion 121.

[0082] In one embodiment, the spline portion 12 is disposed on the outer or inner side of the wheel 10; the locking assembly 30 is disposed on the outer or inner side of the wheel 10; and the spline portion 12 and the locking assembly 30 are disposed on the same side of the wheel 10.

[0083] In one embodiment, the wheel frame 20 includes an upper cover 21, an outer side plate 22 and an inner side plate 23 vertically connected to the upper cover 21; the outer side plate 22 is rotatably connected to the locking assembly 30, or the inner side plate 22 is rotatably connected to the locking assembly 30.

[0084] In one embodiment, the locking assembly 30 includes a sliding portion 33 disposed on the outer side of the locking assembly 30; the sliding portion 33 includes a sliding shaft 331 and a locking portion 332 connected to the sliding shaft 331; the locking portion 332 is a cylinder, and the sliding shaft 331 is a cylinder; the diameter of the locking portion 332 is larger than the diameter of the sliding shaft 331.

[0085] In one embodiment, the wheel frame 20 includes a positioning groove 24; the locking part 332 is engaged on the outside of the positioning groove 24; the positioning groove 24 provides space for the sliding part 32 to move.

[0086] In one embodiment, the wheel frame 20 includes a limiting part 25, which is disposed on one side of the inner side plate 23 or the outer side plate 22; the limiting part 25 is used to restrict the sliding of the brake assembly 30.

[0087] In one embodiment, the vehicle braking structure 1 further includes a spring force sensor, which is used to acquire spring force data of the spring force part 311, and the spring force data is used to analyze the locking state of the wheel 10.

[0088] 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.

[0089] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0090] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0091] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0092] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A vehicle braking structure, characterized in that, The vehicle braking structure includes: A wheel, wherein the wheel is provided with a slot; A wheel frame, which is rotatably connected to the wheel; A wheel locking assembly is rotatably connected to the wheel frame. The wheel locking assembly includes a pedal portion, a locking pin disposed on the inner side of the pedal portion, and a sliding portion disposed on the outer side of the pedal portion. The pedal portion includes a spring portion and a rotating connection portion, and the spring portion is connected to the sliding portion and the rotating connection portion respectively. The locking pin is used to cooperate with the slot to lock the wheel.

2. The vehicle braking structure according to claim 1, characterized in that, The wheel includes a roller and a spline portion disposed on the side of the roller; The spline portion includes a connecting portion and a plurality of slots, the plurality of slots being arranged circumferentially on the connecting portion.

3. The vehicle braking structure according to claim 2, characterized in that, The spline portion is disposed on the outer or inner side of the wheel; The locking assembly is located on the outside or inside of the wheel; The spline portion and the locking assembly are located on the same side of the wheel.

4. The vehicle braking structure according to claim 1, characterized in that, The wheel frame includes a top cover, an inner side plate and an outer side plate vertically connected to the top cover; The outer side plate is rotatably connected to the vehicle locking assembly, or... The inner side plate is rotatably connected to the vehicle locking assembly.

5. The vehicle braking structure according to claim 1, characterized in that, The sliding part includes a sliding shaft and a locking part connected to the sliding shaft; The locking part is a cylinder, and the sliding shaft is a cylinder; The diameter of the locking part is larger than the diameter of the sliding shaft.

6. The vehicle braking structure according to claim 5, characterized in that, The wheel frame includes a positioning groove; the locking part is engaged with the outside of the positioning groove; The positioning groove provides space for the sliding part to move.

7. The vehicle braking structure according to claim 1, characterized in that, The wheel frame includes a connecting hole, and a fixing part that mates with the rotating connecting part is provided at the connecting hole.

8. The vehicle braking structure according to claim 4, characterized in that, The wheel frame includes a limiting part, which is disposed on one side of the inner side plate or the outer side plate; The limiting part is used to restrict the rotation of the brake assembly.

9. The vehicle braking structure according to claim 1, characterized in that, The vehicle braking structure also includes a spring force sensor and a slope sensor. The spring force sensor is used to acquire the spring force data of the spring force part, and the slope sensor is used to collect slope data.

10. A low-speed vehicle, characterized in that, The low-speed vehicle includes the vehicle braking structure as described in any one of claims 1-9.

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