Integrated braking and parking device

Abstract

The utility model discloses an integrated braking and parking device which comprises a pedal plate and a braking assembly in transmission connection with the pedal plate, and further comprises a parking plate in transmission connection with the pedal plate and provided with a braking groove of a one-way limiting structure. The parking pawl is connected with the fixing component through an elastic piece, and the elastic piece is used for forcing the parking pawl to be meshed with the braking groove so as to prevent the parking plate from returning; an energy storage element is arranged between the parking pin shaft and the parking pawl, and the energy storage element stores or releases energy when the distance between the parking pawl and the parking pin shaft changes; the guide structure is fixed on the parking plate and comprises a separation limiting part and a guide surface; braking, parking and unlocking are achieved through different strokes of the pedal. The vehicle brake system has the advantages that the problems that braking and parking of an existing vehicle brake system need to be controlled by two parts, and operability is poor can be effectively solved. The operation process of the driver is greatly simplified, the operation complexity is reduced, and the convenience in the driving process is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle braking and parking devices, specifically an integrated braking and parking device. Background Technology

[0002] The braking mechanism is activated by pressing the brake pedal, which actuates the brake cable. The other end of the brake cable is connected to the wheel hub brake or the motor output shaft. The movement of the brake cable causes the friction surfaces to press together, thereby achieving wheel hub braking or motor output shaft braking, bringing the vehicle to a stop.

[0003] The parking mechanism is a structure that keeps the brake pedal pressed down at the end of the braking process (with the brake pedal not released) when the vehicle stops. This keeps the brake cable engaged and presses the friction surface firmly, thus keeping the vehicle stationary and achieving the parking function.

[0004] Traditional braking systems require two control components. For example, the Chinese patent publication CN220465465U entitled "Brake Pedal Structure and Vehicle" allows for single-foot operation by using a parking pedal and brake pedal that are set together. However, single-foot operation requires pressing different pedals. Although this can reduce the space occupied by the brake pedal and handbrake, it still essentially requires operation through two pedals, and its operability and integration are not high. Utility Model Content

[0005] The purpose of this invention is to provide an integrated braking and parking device that can effectively solve the problem that the existing vehicle braking system requires two components to control braking and parking, resulting in poor operability.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] An integrated braking parking device includes a foot pedal and a braking assembly tractively connected to the foot pedal, and further includes:

[0008] A parking plate is connected to the foot pedal, and the parking plate is provided with a brake groove with a one-way limiting structure.

[0009] A parking pawl is connected to a fixed component via an elastic element, the elastic element providing a way to force the parking pawl to engage with a brake groove to prevent the parking plate from resetting.

[0010] A parking pin and a parking pawl are provided with an energy storage element, which stores or releases energy when the distance between the parking pawl and the parking pin changes; and...

[0011] The guide structure, fixed to the parking plate, includes a separation limiting part and a guide surface;

[0012] When the pedal is pressed to its first stroke, the braking assembly applies the brakes.

[0013] When the foot pedal is pressed to the second stroke, the parking pawl engages with the brake groove to lock the parking plate, and the separation limit part prevents the parking pin from moving and maintains the energy storage state of the energy storage element.

[0014] When the foot pedal is pressed again to the unlocking stroke, the movement of the parking plate causes the separation limit part to disengage from the parking pin, and the energy storage element releases energy to drive the parking pin to cross the separation limit part and be positioned between the guide surface and the parking pawl.

[0015] When the parking plate is reset, the guide surface pushes the parking pin to move, forcing the parking pawl to disengage from the brake groove to unlock.

[0016] In the aforementioned integrated braking parking device, the guiding structure includes a first guide member, and the separation limiting part is disposed on the first guide member. Along the second stroke direction of the parking plate, the front end of the separation limiting part has a V-shaped cross-section. The V-shaped separation limiting part can precisely insert between the parking pin and the parking pawl, guiding the movement trajectory of the parking pin and separating it from the parking pawl. When the foot pedal is pressed to the second stroke to achieve parking, the V-shaped structure stably restricts the parking pin to a specific position, maintaining the energy storage state of the energy storage element and making the parking lock more reliable. When the foot pedal is pressed again to the unlock stroke, the contact method between the V-shaped separation limiting part and the parking pin facilitates smooth unlocking. As the parking plate moves, the parking pin more easily disengages from the opening of the V-shape and, driven by the energy released by the energy storage element, can more smoothly cross the separation limiting part.

[0017] In the aforementioned integrated brake-parking device, the guide surface is located at the rear of the first guide member and near the brake groove. The position of the guide surface ensures that when the parking plate resets, the parking pin can push the parking pawl out of the brake groove via the shortest and most direct path. Due to its proximity to the brake groove, the parking pin, under the influence of the guide surface, can precisely act on the parking pawl, reducing unnecessary displacement and energy loss, making the unlocking process more efficient and smooth, and improving the user experience.

[0018] In the aforementioned integrated braking parking device, the guiding structure further includes a second guiding member located behind the first guiding member. The tail of the first guiding member has a groove, and the front of the second guiding member has a protrusion that mates with the groove, forming a V-shaped guiding channel. When the parking pawl engages with the brake groove to lock the parking plate, the parking pin is located at the lowest point of the guiding channel or within the guiding channel that has already passed the lowest point. The V-shaped guiding channel precisely guides the movement trajectory of the parking pin. During parking, when the parking pawl engages with the brake groove to lock the parking plate, the two side walls of the V-shaped structure guide the parking pin, allowing it to smoothly reach or pass the lowest point of the guiding channel. This ensures that the parking pin is stably positioned as expected each time, avoiding deviation or wobbling, and providing a reliable basis for subsequent unlocking operations.

[0019] In the aforementioned integrated braking parking device, the first guide member has a first guide surface extending towards the entrance of the guide channel on its end face near the parking pin, and / or, the second guide member has a second guide surface on its side wall near the parking pin. The second guide surface is inclined towards the lowest point of the guide channel to guide the parking pin into the guide channel. During parking operation, when the parking pawl engages with the brake groove to lock the parking plate, these inclined guide surfaces act like a funnel, guiding the parking pin. During the second stroke of the pedal, the first guide surface effectively guides the parking pin into the guide channel. If the pedal is depressed beyond the second stroke, the second guide surface can guide the parking pawl into the guide channel when the parking plate returns to its original position, ensuring that the parking pin is accurately positioned at or beyond the lowest point of the guide channel, providing stable support for parking lock. This significantly improves the accuracy of the parking pin positioning. This design allows drivers to complete parking operations more quickly and accurately, reducing errors caused by unfamiliarity with the operation or time constraints.

[0020] In the aforementioned integrated braking parking device, the groove is provided with a fourth guide surface that slopes from the lowest point of the guide channel toward the outlet of the guide groove. During the unlocking phase, when the parking plate needs to move to disengage the separation limiting part from the parking pin, the energy storage element releases energy to drive the parking pin to slide along the fourth guide surface and disengage from the guide channel, smoothly moving toward the outlet of the guide groove. This greatly improves the success rate and efficiency of unlocking, providing users with a smoother operating experience.

[0021] In the aforementioned integrated braking parking device, the brake groove includes: a stop surface, which is not parallel to the parking plate's reset direction, and the stop surface abuts against the parking pawl to prevent the parking plate from resetting; a third guide surface is provided at the position opposite to the stop surface in the brake groove, the third guide surface being an inclined surface or an arc surface, so that after the parking pawl engages in the brake groove, the parking plate can continue to move relative to the parking pawl in the second stroke direction. When the parking pawl engages in the brake groove and the parking plate wants to reset, the stop surface can effectively prevent it from resetting; the third guide surface is set as an inclined surface or an arc surface, so that after the parking pawl engages in the brake groove, the two can move relative to each other when the parking plate continues to move. When the unlocking stroke is required, the third guide surface allows the parking pawl not to affect the parking plate's continued rotation in the parking direction, thereby allowing the guide structure to continue moving relative to the parking pin, so that the guide structure no longer obstructs the parking pin, allowing the parking pin to pass over the guide structure, thus achieving unlocking when the parking plate resets.

[0022] In the aforementioned integrated braking parking device, the projection of the guide surface onto the parking plate is at least partially located within the brake groove. This ensures that during unlocking, the movement path of the parking pin precisely corresponds to the position of the brake groove, improving the smoothness and reliability of unlocking, avoiding situations where unlocking is difficult or impossible, and providing the driver with a better operating experience.

[0023] In the aforementioned integrated brake-parking device, the device further includes a first elastic reset member and a second elastic reset member. The first elastic reset member is connected to the parking plate and is used to drive the parking plate to reset when the foot pedal is released. A preload gap is provided between the second elastic reset member and the parking plate, the size of which is equal to the displacement of the parking plate corresponding to the first stroke. When the foot pedal is in the first stroke, the second elastic reset member maintains its free length and does not deform. When the foot pedal is pressed to the second stroke, the displacement of the parking plate eliminates the preload gap, and the second elastic reset member begins to compress or stretch. The cooperation between the preload gap and the elastic reset member optimizes the operating feel. In the first stroke, the driver can feel relatively easy pedal resistance because only the first elastic reset member is working at this time. However, when entering the second stroke, the second elastic reset member begins to compress or stretch, and the pedal resistance changes significantly. This change provides the driver with an intuitive prompt, allowing the driver to clearly perceive the switch between braking and parking states, making the operating experience more comfortable and natural.

[0024] In the aforementioned integrated braking and parking device, a displacement limiting groove is formed on the parking plate, and a movable limiting shaft is provided within the displacement limiting groove. The limiting shaft is connected to a fixed component. The displacement limiting groove and the limiting shaft cooperate to precisely limit the movement range of the parking plate. During braking and parking operations, excessive displacement of the parking plate is prevented, avoiding braking or parking failure due to improper displacement and ensuring stable operation of the device.

[0025] Compared with the prior art, the advantages of this utility model are:

[0026] The braking and parking functions are achieved by pressing a foot pedal at different distances, effectively solving the problem of existing vehicle braking systems requiring two separate components for braking and parking, resulting in poor operability. Braking and parking functions can be easily achieved with just different pedal travels, eliminating the need for two separate components like in traditional systems. This greatly simplifies the driver's operation, reduces complexity, and improves convenience. Integrating braking and parking functions into one device significantly reduces the space required for vehicle chassis layout compared to traditional separate braking and parking structures. This not only benefits the overall vehicle layout design but also frees up more space for other chassis systems, improving space utilization, especially suitable for small vehicles or models with high space requirements. The unidirectional limiting structure of the brake groove, in conjunction with the parking pawl, ensures parking functionality while allowing sufficient clearance for relative movement between the parking pawl and brake groove during the unlocking stroke. This ensures that when the foot pedal is pressed again to the unlocking stroke, the parking plate can move beyond the second stroke, allowing the parking pin to pass the separation limit. The energy storage element stores energy when the distance between the parking pawl and the pin changes, providing active driving force for unlocking and avoiding the cumbersome operation of manual unlocking. The separation limit part blocks the movement of the pin in the parking state, maintaining the energy storage state of the energy storage element. When unlocking, the guide surface pushes the pin across the separation limit part through the movement of the parking plate, forcing the parking pawl to disengage from the brake groove, realizing the intelligent operation of "automatic unlocking upon re-stepping", without the need for an additional release device, simplifying the user's operation process.

[0027] The first stroke only triggers the braking components, meeting daily deceleration needs; the second stroke, through the cooperation of energy storage elements and guide structures, achieves parking lock, preventing accidental operation; the unlocking stroke, through the geometric design of the guide surface, ensures accurate positioning of the parking pin and pushes the pawl out, preventing jamming. By using the foot pedal to control different strokes and movements of the parking plate, the three functions of braking, parking, and unlocking can be achieved. Attached Figure Description

[0028] Figure 1 This is a front view of an integrated braking and parking device according to the present invention;

[0029] Figure 2This is a top view of an integrated braking and parking device according to the present invention;

[0030] Figure 3 This is a perspective view of an integrated braking and parking device according to the present invention;

[0031] Figure 4 This is a schematic diagram of the parking plate structure in this utility model;

[0032] Figure 5 This is a perspective view of the parking plate, parking pawl, and parking pin in this utility model;

[0033] Figure 6 This is a schematic diagram showing the position of the present invention in its initial stage;

[0034] Figure 7 This is a schematic diagram showing the position after the first stroke of this utility model;

[0035] Figure 8 This is a schematic diagram of the position during the second stroke of the present invention. Figure 1 ;

[0036] Figure 9 This is a schematic diagram of the position during the second stroke of the present invention. Figure 2 ;

[0037] Figure 10 This is a schematic diagram showing the position after the second stroke of this utility model;

[0038] Figure 11 This is a schematic diagram showing the position after the unlocking process of this utility model has ended.

[0039] The attached figures are labeled as follows:

[0040] Foot pedal 100, parking plate 200, brake groove 210, stop surface 211, third guide surface 212, displacement limiting groove 220, parking pawl 300, elastic element 310, parking pin 400, energy storage element 500, guide structure 600, first guide element 610, separation limiting part 611, guide surface 612, groove 613, first guide surface 614, fourth guide surface 615, second guide element 620, protrusion 621, second guide surface 622, guide channel 630, housing 700, first elastic reset element 710, second elastic reset element 720, limiting shaft 730. Detailed Implementation

[0041] An integrated braking parking device includes a foot pedal 100 and a braking assembly throttledly connected to the foot pedal 100, and further includes:

[0042] The parking plate 200 is connected to the foot pedal 100 in a transmission manner, and the parking plate 200 is provided with a brake groove 210 with a one-way limiting structure;

[0043] The parking pawl 300 is connected to the fixed component via an elastic element 310, which provides a way to force the parking pawl 300 to engage with the brake groove 210 to prevent the parking plate 200 from resetting.

[0044] An energy storage element 500 is provided between the parking pin 400 and the parking pawl 300. The energy storage element 500 stores or releases energy when the distance between the parking pawl 300 and the parking pin 400 changes; and...

[0045] The guide structure 600 is fixed to the parking plate 200 and includes a separation limiting part 611 and a guide surface 612.

[0046] When the foot pedal 100 is pressed to the first stroke, the braking assembly applies the brakes.

[0047] When the foot pedal 100 is pressed to the second stroke, the parking pawl 300 engages with the brake groove 210 to lock the parking plate 200, and the separation limiting part 611 blocks the movement of the parking pin 400 and maintains the energy storage state of the energy storage element 500.

[0048] When the foot pedal 100 is pressed again to the unlocking stroke, the movement of the parking plate 200 causes the separation limiting part 611 to disengage from the parking pin 400, and the energy storage element 500 releases energy to drive the parking pin 400 to cross the separation limiting part 611 and be positioned between the guide surface 612 and the parking pawl 300.

[0049] When the parking plate 200 is reset, the guide surface 612 pushes the parking pin 400 to move, forcing the parking pawl 300 to disengage from the brake groove 210 to unlock.

[0050] The braking and parking functions are achieved by pressing the foot pedal 100 at different distances, effectively solving the problem of existing vehicle braking systems requiring two separate components for braking and parking, resulting in poor operability. Braking and parking functions can be easily achieved with just different distances from a single foot pedal 100, eliminating the need for two separate components as in traditional devices. This greatly simplifies the driver's operation, reduces operational complexity, and improves convenience during driving. Integrating braking and parking functions into a single device significantly reduces the space required for vehicle chassis layout compared to traditional separate braking and parking structures. This not only benefits the overall vehicle layout design but also frees up more space for other systems on the chassis, improving space utilization, and is particularly suitable for small vehicles or models with high space requirements. The brake groove 210 of the one-way limiting structure cooperates with the parking pawl 300 to ensure the parking function and also provides a margin for relative movement between the parking pawl 300 and the brake groove 210 during the unlocking stroke of the parking plate 200. This ensures that when the foot pedal 100 is pressed again to the unlocking stroke, the parking plate 200 can move beyond the second stroke displacement, allowing the parking pin 400 to cross the separation limiting part 611. The energy storage element 500 stores energy when the distance between the parking pawl 300 and the pin changes, providing active driving force for unlocking and avoiding the cumbersome operation of manual unlocking. The separation limiting part 611 blocks the movement of the pin in the parking state, maintaining the energy storage state of the energy storage element 500. When unlocking, the guide surface 612 pushes the pin across the separation limiting part 611 through the movement of the parking plate 200, forcing the parking pawl 300 to disengage from the brake groove 210, realizing the intelligent operation of "automatic unlocking upon re-pressing" without the need for an additional release device, simplifying the user's operation process.

[0051] The first stroke only triggers the braking component, meeting daily deceleration needs; the second stroke, through the cooperation of the energy storage element 500 and the guide structure 600, achieves parking lock, preventing accidental operation; the unlocking stroke, through the geometric design of the guide surface 612, ensures accurate positioning of the parking pin 400 and pushes the pawl out, preventing jamming. By using the foot pedal 100 to control different strokes and movements of the parking plate 200, the three functions of braking, parking, and unlocking can be achieved.

[0052] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0053] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] See Figures 1 to 5 This utility model provides an embodiment of an integrated braking parking device, which includes a foot pedal 100, a housing 700, and a braking assembly that is pulsatorically connected to the foot pedal 100. The connection between the foot pedal 100 and the braking assembly can refer to the prior art. One end of the foot pedal 100 is rotatably connected to the housing 700. The user rotates the foot pedal 100 relative to the housing 700 by pressing the other end of the foot pedal 100. The rotation is controlled according to the pressing depth, which is the rotation amplitude of the foot pedal 100.

[0057] When the foot pedal 100 is pressed for the first stroke, no parking function is activated; only the foot pedal 100 actuates the braking components to produce a braking effect. A parking plate 200 and a parking pawl 300 are also provided within the housing 700. The parking plate 200 is pivotally mounted within the housing 700 and is connected to the foot pedal 100. Rotation of the foot pedal 100 causes the parking plate 200 to pivot relative to the housing 700. A brake groove 210 with a one-way limiting structure is provided on the parking plate 200. The brake groove 210 can be formed on the plate body of the parking plate 200 or on its circumference. For ease of design and manufacturing, in this embodiment, the brake groove 210 is located on the circumferential wall furthest from the rotation axis of the parking plate 200. The parking pawl 300 includes a pawl connecting rod and a pawl hook. A first pin is provided within the housing 700. One end of the pawl connecting rod is rotatably connected to the first pin, and the pawl hook is fixed to the other end of the pawl connecting rod, meaning the pawl hook can pivot relative to the first pin. An elastic element 310 is provided between the parking pawl 300 and the housing 700. The elastic element 310 can also be fixed to other fixed components besides the housing 700. The elastic element 310 provides a force to the parking pawl 300 in the direction of engaging the brake groove 210. Once the parking plate 200 is rotated to the correct position, the parking pawl 300 can engage the brake groove 210, thereby preventing the parking plate 200 from resetting. At this time, because the parking plate 200 cannot reset, the foot pedal 100 also cannot reset, and the braking assembly connected to the foot pedal 100 will also maintain the maximum braking state, realizing the parking function. That is, after the foot pedal 100 is pressed for the first stroke, if the foot pedal 100 is pressed for the second stroke, the parking pawl 300 engages the brake groove 210 to lock the parking plate 200, realizing parking.

[0058] The above structure realizes the braking and parking functions of the entire device, but it is also necessary to operate the foot pedal 100 to release the parking position. Therefore, this can be achieved through the following structure. A parking pin 400 is also provided inside the housing 700. In this embodiment, the parking pin 400 is rotatably connected to the housing 700, or it can be rotatably connected to other fixed components. To simplify the design, in this embodiment, the parking pin 400 is also rotatably connected to the first pin along with the parking pawl 300. An energy storage element is provided between the parking pin 400 and the parking pawl 300. The energy storage element stores or releases energy when the distance between the parking pin 400 and the parking pawl 300 changes. Generally, energy is stored when the distance between the parking pin 400 and the parking pawl 300 increases, and energy is released when the distance decreases. For example, a torsion spring can be used as the energy storage element to achieve the above purpose. A guide structure 600 is also provided on the parking plate 200. The guide structure 600 includes a separation limiting part 611 and a guide surface 612.

[0059] When the user depresses the pedal to the second stroke, the separation limiting part 611 of the guide structure 600 inserts between the parking pin 400 and the parking pawl 300. The parking pawl 300 is against the outer periphery of the parking plate 200. The separation limiting part 611 pushes the parking pin 400 to rotate away from the parking pawl 300, increasing the distance between them, and the energy storage element 500 begins to store energy. When the user depresses the pedal to the second stroke to park, the separation limiting part 611 remains between the parking pin 400 and the parking pawl 300 and maintains this state. Since the vehicle is already parked, the user can release the pedal 100, keeping the vehicle in a parked state. When the user presses the foot pedal 100 again to the unlocking position, the parking plate 200 moves, causing the separation limit part 611 to disengage from the parking pin 400. The energy storage element 500 releases energy to drive the parking pin 400 across the separation limit part 611 and position it between the guide surface 612 and the parking pawl 300. When the user releases the foot pedal 100, the parking plate 200 returns to its original position. The guide surface 612 then pushes the parking pin 400 to move, pushing the parking pawl 300 away from the brake groove 210, forcing the parking pawl 300 to disengage from the brake groove 210, thus unlocking the vehicle.

[0060] In the above embodiments, the braking assembly can also achieve braking via the parking plate 200. For example, a brake rope can be installed between the parking plate 200 and the braking assembly. The parking plate 200 is driven to swing by the foot pedal 100, and the parking plate 200 pulls the brake rope to drive the braking assembly to brake. Components such as the parking plate 200, parking pawl 300, and parking pin 400 can all be integrated into the housing 700. The housing 700 not only protects these components but also improves overall integration and facilitates installation. This device achieves a high degree of integration of braking and parking functions through the mechanical self-locking of the unidirectional limiting brake groove 210 and the parking pawl 300, the intelligent unlocking of the energy storage element 500 and the guide structure 600, multi-stage stroke control, and closed-loop integrated design. The various technical features complement each other functionally and are closely coordinated structurally, ultimately achieving comprehensive advantages such as simplified operation, space saving, high reliability, and convenient maintenance, providing an innovative solution for vehicle braking systems.

[0061] like Figure 4As shown, the guide structure 600 further includes a first guide member 610, a separation limiting part 611 disposed on the first guide member 610, and along the second stroke direction of the parking plate 200, the front end cross-section of the separation fiber cloth is V-shaped. The V-shaped separation limiting part 611 can accurately guide the movement trajectory of the parking pin 400. During the second stroke of the foot pedal 100, the two side walls of the V-shaped structure can separate the parking pin 400 and the parking pawl 300 like a track, and when parking is achieved in the second stroke, the parking pin 400 is stably restricted to a specific position, maintaining the energy storage state of the energy storage element 500, making the parking lock more reliable. Compared with other shapes, the V-shape has a better guiding effect and ensures the stability of the parking process. The side of the first guide member 610 slides in contact with the parking pin 400. The component force of the parking pin 400 on the first guide member 610 will push the parking plate 200 in the reset direction, which will increase the stability of the contact between the parking pawl 300 and the brake groove 210.

[0062] The guide surface 612 is located at the rear of the first guide member 610 and near the brake groove 210. The guide surface 612 is inclined to the movement trajectory of the parking plate 200 during reset, ensuring that the guide surface 612 can push the parking pin 400 away from the brake groove 210. The position of the guide surface 612 ensures that when the parking plate 200 is reset, the parking pin 400 can push the parking pawl 300 out of the brake groove 210 via the shortest and most direct path. Due to its proximity to the brake groove 210, the parking pin 400, under the action of the guide surface 612, can accurately act on the parking pawl 300, reducing unnecessary displacement and energy loss, making the unlocking process more efficient and smooth, and improving the user experience.

[0063] Furthermore, the guide structure 600 also includes a second guide 620 located behind the first guide 610. The tail of the first guide 610 is provided with a groove 613, and the front of the second guide 620 is provided with a protrusion 621 that cooperates with the groove 613. The two form a V-shaped guide channel 630. When the parking pawl 300 is engaged with the brake groove 210 to lock the parking plate 200, the parking pin 400 is located at the lowest point of the guide channel 630 or in the guide channel 630 that has already passed the lowest point. The second guide 620 is provided to prevent the user from accidentally jumping directly to the unlocking stroke due to an inability to accurately control the position of the second stroke. When the user presses the foot pedal 100 and passes the second stroke, the second guide 620 will block the parking pin 400, preventing it from directly passing the first guide 610. When the user releases the foot pedal 100, the parking plate 200 returns to its original position, and the parking pin 400 can then smoothly enter the guide channel 630. When the parking pawl 300 engages with the brake groove 210 to lock the parking plate 200, the parking pin 400 is located at the lowest point of the guide channel 630 or has already passed the lowest point of the guide channel 630. Thus, when the user presses the foot pedal to the unlocking stroke, the parking pin 400 can slide out along the guide channel 630, achieving the purpose of passing the first guide 610. The groove 613 of the first guide member 610 and the protrusion 621 of the second guide member 620 cooperate to form a V-shaped guide channel 630. This connection method enhances the stability of the entire guide structure 600. The groove 613 and the protrusion 621 cooperate with each other, which not only transmits force but also prevents relative displacement between the guide members to a certain extent, making the guide structure 600 more robust and reliable during long-term use. Moreover, the V-shaped structure itself has good mechanical properties and can better withstand the pressure and impact from the parking pin 400 and other components, further improving the structural stability of the entire device.

[0064] Based on the above embodiments, the first guide member 610 has a first guide surface 614 extending towards the entrance of the guide channel 630 on its end face near the parking pin 400, and / or, the second guide member 620 has a second guide surface 622 on its side wall near the parking pin 400. The second guide surface 622 is inclined towards the lowest point of the guide channel 630 to guide the parking pin 400 into the guide channel 630. In this embodiment, both the first guide surface 614 and the second guide surface 622 are provided. Their main purpose is to guide the parking pin 400 into the guide channel 630 during the second stroke. The first guide surface 614 plays a role during the second stroke, while the second guide surface 622 plays a guiding role when the parking plate 200 resets after the user has pressed the pedal past the second stroke. The first guide surface 614 of the first guide member 610 and the second guide surface 622 of the second guide member 620 are both inclined towards the guide channel 630. During parking operations, when the parking pawl 300 engages with the brake groove 210 to lock the parking plate 200, these inclined guide surfaces act like a funnel, guiding the parking pin 400. Regardless of any initial positional deviation of the parking pin 400, the guide surfaces gradually guide it into the guide channel 630, ensuring that the parking pin 400 is accurately positioned at or beyond the lowest point of the guide channel 630, providing stable support for parking and significantly improving the accuracy of the parking pin 400's positioning. The guide surface design makes the process of the parking pin 400 entering the guide channel 630 smoother. When performing parking operations, the driver does not need to precisely control the position of the parking pin 400; the guide surfaces automatically guide it into place. This reduces operational difficulty, shortens the time required for parking operations, and improves efficiency. Especially in emergency parking or frequent parking scenarios, this design allows drivers to complete parking operations more quickly and accurately, reducing errors caused by unfamiliarity with the operation or time constraints.

[0065] In addition, a fourth guide surface 615 is provided within the groove 613, inclined from the lowest point of the guide channel 630 towards the outlet of the guide groove. This fourth guide surface 615 guides the parking pin 400 smoothly towards the outlet of the guide groove. This prevents the parking pin 400 from getting stuck or shifting within the groove 613, ensuring it is accurately positioned between the guide surface 612 and the parking pawl 300, thereby pushing the parking pawl 300 away from the brake groove 210 for reliable unlocking. This design significantly improves the success rate and efficiency of unlocking, providing users with a smoother operating experience. By guiding the parking pin 400 along a predetermined path, the fourth guide surface 615 improves the reliability of the brake-parking device under various operating conditions. Whether in frequently used scenarios or under harsh environmental conditions (such as high temperature, low temperature, humidity, etc.), the fourth guide surface 615 ensures the accurate movement of the parking pin 400, thereby guaranteeing the normal operation of braking and parking functions and reducing the risk of failure due to abnormal component movement.

[0066] Based on the above embodiments, a brake groove 210 with a one-way limiting structure is implemented. The brake groove 210 includes a stop surface 211, which is not parallel to the reset direction of the parking plate 200. When the parking plate 200 resets, the parking pawl 300 abuts against the stop surface 211, generating a force that prevents the parking plate 200 from resetting, thus locking the parking plate 200 and achieving the parking function. Ideally, the stop surface should be perpendicular to the reset direction of the parking plate 200, meaning the force of the parking pawl 300 on the stop surface 211 completely prevents the parking plate 200 from resetting.

[0067] A third guide surface 212 is provided at the position opposite to the brake groove 210 and the stop surface 211, or at the top of the parking pawl 300. The third guide surface 212 is an inclined surface or an arc surface, so that after the parking pawl 300 is engaged in the brake groove 210, when the parking plate 200 continues to move, the third guide surface 212 can push the parking pawl 300 out of the brake groove 210, and the parking pawl 300 will not be able to prevent the parking plate 200 from continuing to move. The third guide surface 212 is designed to function during the unlocking stroke. The unlocking stroke requires the pedal 100 to be pressed further after the second stroke, causing the parking plate 200 to rotate. During the unlocking stroke, the parking pawl 300 interacts with the third guide surface 212. Guided by the third guide surface 212, the parking pawl 300 gradually disengages from the brake groove 210 without obstructing the movement of the parking plate 200. The continued movement of the parking plate 200 causes the guide structure 600 to continue moving. Eventually, the guide structure 600 will lose its obstruction to the parking pin 400, allowing the parking pin 400 to pass over the guide structure 600.

[0068] Continuing with the above embodiment, the projection of the guide surface 612 onto the parking plate 200 is at least partially located within the brake groove 210. When the parking plate 200 is reset, the guide surface 612 pushes the parking pin 400 to move, thereby unlocking. The fact that the guide surface 612's projection onto the parking plate 200 is at least partially located within the brake groove 210 ensures that the movement path of the parking pin 400 precisely corresponds to the position of the brake groove 210 during the unlocking process. This allows the parking pin 400 to more effectively force the parking pawl 300 out of the brake groove 210, reducing the operating force and time required for unlocking, improving the smoothness and reliability of unlocking, avoiding situations where unlocking is difficult or impossible, and providing the driver with a better operating experience.

[0069] Based on the above embodiment, a first elastic reset member 710 is provided inside the housing 700. The first elastic reset member 710 can be directly connected to the foot pedal 100 or to the parking plate 200. One end of the first elastic reset member 710 is fixed to the housing 700, and the other end of the first elastic reset member 710 is fixed to the parking plate 200. The rotation axis of the first elastic reset member 710 and the parking plate 200 do not coincide, so that the first elastic reset member 710 undergoes elastic deformation after the parking plate 200 rotates, thereby continuing the elastic potential energy. When the user releases the foot pedal 100, the elastic potential energy of the first elastic reset member 710 is released, driving the parking plate 200 to reset and simultaneously driving the foot pedal 100 to reset as well.

[0070] Since the first stroke only produces a braking effect, to park the vehicle, the pedal 100 needs to be pressed further into the second stroke. To allow the user to clearly perceive the pedal 100 transitioning from the first stroke to the second stroke, this solution includes a second elastic reset element 720 on the pedal 100 or the parking plate 200. In this embodiment, one end of the second elastic reset element 720 is fixed to the housing 700, and the other end is connected to the parking plate 200. A preload gap is reserved between the second elastic reset element 720 and the parking plate 200. The size of the preload gap is equal to the displacement of the corresponding parking plate 200 during the first stroke. That is, during the first stroke, the second elastic reset element 720 does not produce elastic deformation. Only when the pedal 100 enters the second stroke does the second elastic reset element 720 begin to accumulate elastic potential energy. At this time, the user can clearly perceive an increase in resistance, which serves as a foot sensor to remind the user that they are entering parking mode.

[0071] In this embodiment, both the first elastic reset member 710 and the second elastic reset member 720 are springs. By setting a preload gap and using two elastic reset members, a clear distinction between braking and parking functions is achieved. During the first stroke, the first elastic reset member 710 and the second elastic reset member 720 have distinct functions: only the first elastic reset member 710 acts on the parking brake 200, and the vehicle achieves the braking function; the second elastic reset member 720 does not participate in the operation, avoiding accidental triggering of the parking function and providing clear operational feedback to the driver, reducing operational errors. When the foot pedal 100 enters the second stroke, the second elastic reset member 720 begins to work, cooperating with the first elastic reset member 710 to complete the parking function, enabling the driver to precisely control the vehicle's state. The combination of preload clearance and elastic reset element optimizes the pedal feel. In the first stroke, the driver can feel relatively easy pedal resistance because only the first elastic reset element 710 is working at this time. When entering the second stroke, the second elastic reset element 720 begins to compress or stretch, and the pedal resistance will change significantly. This change provides the driver with an intuitive prompt, allowing the driver to clearly perceive the switching between braking and parking states, making the operating experience more comfortable and natural.

[0072] In addition, a displacement limiting groove 220 is formed on the parking plate 200, and a limiting shaft 730 is fixed inside the housing 700. The limiting shaft 730 passes through the displacement limiting groove 220. The limiting shaft 730 can limit the movement stroke of the parking plate 200, which also limits the depressing stroke of the foot pedal 100. During braking and parking operations, it prevents the parking plate 200 from excessively displacing, avoiding braking or parking failure due to improper displacement, and ensuring stable operation of the device. For example, in frequent braking and parking scenarios, it ensures the consistency and reliability of each operation and prevents accidents.

[0073] In the initial state, such as Figure 6 As shown, the parking pawl 300 and parking pin 400 approach each other under the action of the energy storage element 500, while the guide structure 600 maintains a certain distance from the parking pawl 300 and parking pin 400. When the foot pedal 100 is pressed to its first stroke, this device primarily performs the braking function. At this time, the guide structure 600 will approach the parking pawl 300 and parking pin 400, as... Figure 7 As shown, when braking is complete and the vehicle is ready to enter the parking state, the separation limiting part 611 of the guide structure 600 is about to insert between the parking pawl 300 and the parking pin 400. The foot pedal 100 is further depressed to its second stroke, and the separation limiting part 611 of the guide structure 600 separates the parking pin 400 and the parking pawl 300, as shown. Figure 8 , Figure 9As shown, because users cannot accurately judge the position of the second stroke, they can easily overstep and enter the unlocking stroke. Therefore, a structure combining the first guide 610 and the second guide 620 is adopted. Even if the user oversteps the second stroke and directly enters the unlocking stroke, when the user releases the foot pedal 100, the parking plate 200 will also return to its original position under the force of the first elastic reset member 710 and the second elastic reset member 720. That is, after releasing the foot pedal 100, the parking plate 200 will rotate back. At this time, under the guidance of the second guide surface 622, the parking pin 400 will enter the guide channel 630; as Figure 10 As shown, and in its lowest position, as the parking plate 200 returns to its original position, the parking pawl 300 will also re-engage in the brake groove 210, completing parking. When the user depresses the foot pedal 100 again to the unlocking stroke, the parking pin 400 is guided by the fourth guide surface 615 to slide out of the guide groove and, under the action of the energy storage element 500, approaches the parking pawl 300, as shown. Figure 11 As shown, the parking pin 400 is located between the guide surface 612 and the parking pawl 300. When the user releases the foot pedal 100, the parking plate 200 is reset under the elastic force of the first elastic reset member 710 and the second elastic reset member 720. During the reset process, the guide structure 600 is rotated. The guide surface 612 on the guide structure 600 will push the parking pawl 300 out of the brake groove 210 through the parking pin 400, so that the parking pawl 300 no longer hinders the reset of the parking plate 200, thus unlocking the parking plate.

[0074] Braking and parking functions can be achieved with just one foot pedal with varying travel distances of 100 degrees, eliminating the cumbersome operation of traditional two-pedal systems. This greatly simplifies the driver's workflow, reduces the probability of operational errors, and improves driving safety and convenience. During operation, the design of components such as the first elastic reset element 710 and the second elastic reset element 720 provides the driver with different tactile sensations in different braking and parking states, offering clear operational feedback to help the driver confirm the vehicle's status and avoid misoperation. The integrated design combines braking and parking functions into a single device, reducing the space required on the vehicle chassis, providing greater flexibility in overall vehicle layout design, and improving the utilization of interior space. This is particularly suitable for small vehicles or models with high space requirements.

[0075] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. An integrated braking and parking device, comprising a foot pedal and a braking assembly pulsatorically connected to the foot pedal, characterized in that, Also includes: A parking plate is connected to the foot pedal, and the parking plate is provided with a brake groove with a one-way limiting structure. A parking pawl is connected to a fixed component via an elastic element, the elastic element providing a way to force the parking pawl to engage with a brake groove to prevent the parking plate from resetting. A parking pin and a parking pawl are provided with an energy storage element, which stores or releases energy when the distance between the parking pawl and the parking pin changes; and... The guide structure, fixed to the parking plate, includes a separation limiting part and a guide surface; When the pedal is pressed to its first stroke, the braking assembly applies the brakes. When the foot pedal is pressed to the second stroke, the parking pawl engages with the brake groove to lock the parking plate, and the separation limit part prevents the parking pin from moving and maintains the energy storage state of the energy storage element. When the foot pedal is pressed again to the unlocking stroke, the movement of the parking plate causes the separation limit part to disengage from the parking pin, and the energy storage element releases energy to drive the parking pin to cross the separation limit part and be positioned between the guide surface and the parking pawl. When the parking plate is reset, the guide surface pushes the parking pin to move, forcing the parking pawl to disengage from the brake groove to unlock.

2. The integrated braking and parking device as described in claim 1, characterized in that, The guide structure includes a first guide member, and the separation limiting part is disposed on the first guide member. Along the second stroke direction of the parking plate, the front end cross section of the separation limiting part is V-shaped.

3. An integrated braking and parking device as described in claim 2, characterized in that, The guide surface is located at the rear of the first guide member and on the side close to the brake groove.

4. An integrated braking and parking device as described in claim 2 or 3, characterized in that, The guide structure also includes a second guide located behind the first guide. The tail of the first guide is provided with a groove, and the front of the second guide is provided with a protrusion that cooperates with the groove. The two form a V-shaped guide channel. When the parking pawl engages with the brake groove to lock the parking plate, the parking pin is located at the lowest point of the guide channel or in the guide channel that has already passed the lowest point.

5. An integrated braking and parking device as described in claim 4, characterized in that, The first guide member has a first guide surface extending towards the entrance of the guide channel on its end face near the parking pin, and / or the second guide member has a second guide surface on its side wall near the parking pin. The second guide surface is inclined towards the lowest point of the guide channel to guide the parking pin into the guide channel.

6. An integrated braking and parking device as described in claim 4, characterized in that, The groove is provided with a fourth guide surface that slopes from the lowest point of the guide channel toward the outlet of the guide groove.

7. An integrated braking and parking device as described in claim 1, characterized in that, The brake groove includes a stop surface, which is not parallel to the parking plate reset direction, and the stop surface abuts against the parking pawl to prevent the parking plate from resetting. A third guide surface is provided at the position opposite to the brake groove and the stop surface. The third guide surface is an inclined surface or an arc surface, so that after the parking pawl is engaged in the brake groove, the parking plate can continue to move relative to the parking pawl in the second stroke direction.

8. An integrated braking and parking device as described in claim 1, characterized in that, The projection of the guide surface onto the parking plate is at least partially located within the brake groove.

9. An integrated braking and parking device as described in claim 1, characterized in that, The integrated brake parking device also includes a first elastic reset component and a second elastic reset component; The first elastic reset member is connected to the parking plate and is used to drive the parking plate to reset when the foot pedal is released; A preload gap is left between the second elastic reset member and the parking plate, and the size of the preload gap is equal to the displacement of the parking plate corresponding to the first stroke; When the foot pedal is in the first stroke, the second elastic reset member maintains its free length and does not deform; When the foot pedal is pressed to the second stroke, the displacement of the parking plate eliminates the preload gap, and the second elastic reset member begins to compress or stretch.

10. An integrated braking and parking device as described in claim 1, characterized in that, The parking plate has a displacement limiting groove, and a movable limiting shaft is provided in the displacement limiting groove. The limiting shaft is connected to a fixed component.

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