Integrated braking and parking device

Abstract

The invention 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 the parking plate is 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 through 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] The invention relates to the technical field of vehicle braking and parking devices, and in particular to an integrated braking and parking device. Background Art

[0002] The braking mechanism drives the brake cable by stepping on the brake pedal. 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 drives the friction surface to be tightened, thereby achieving wheel hub braking or motor output shaft braking to stop the entire vehicle.

[0003] The parking mechanism is a structure that keeps the brake pedal at the end when the vehicle stops (the brake pedal is not released), so that the brake cable always drives the friction surface to be tightened and not loosened, and the vehicle always stops, realizing the parking function.

[0004] Traditional braking systems require two control components, such as the Chinese patent publication number CN220465465U entitled "Brake Pedal Structure and Vehicle". The parking pedal and brake pedal that are set together can also be operated with one foot, but the single foot needs to step on different pedals. Although it can reduce the space occupied by the brake pedal and the handbrake, it is essentially still operated by two pedals, and its operability and integration are not high. Summary of the invention

[0005] The object of the present invention is to provide an integrated braking and parking device, which can effectively solve the problem that the braking and parking of the existing vehicle braking system require two components to be controlled and the operability is poor.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] An integrated brake parking device comprises a foot pedal and a brake assembly connected to the foot pedal in a transmission manner, and further comprises:

[0008] A parking plate is connected to the pedal in a transmission manner, and the parking plate is provided with a brake groove of a one-way limiting structure;

[0009] A parking pawl connected to the fixed component via an elastic member, wherein the elastic member forces the parking pawl to engage with the brake groove to prevent the parking plate from being reset;

[0010] An energy storage element is provided 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; and,

[0011] A guide structure, fixed to the parking plate, comprising a separation limit portion and a guide surface;

[0012] When the foot pedal reaches the first stroke, the brake assembly realizes braking;

[0013] When the foot pedal is continuously depressed to the second stroke, the parking pawl engages with the braking groove to lock the parking plate, and the separation limiting portion blocks the movement of the parking pin shaft and maintains the energy storage state of the energy storage element;

[0014] When the foot pedal is depressed again to the unlocking stroke, the movement of the parking plate causes the separation limiting portion to disengage from the parking pin shaft, and the energy storage element releases energy to drive the parking pin shaft to cross the separation limiting portion and be positioned between the guiding surface and the parking pawl;

[0015] When the parking plate is reset, the guiding surface pushes the parking pin shaft to move, forcing the parking pawl to disengage from the braking groove to achieve unlocking.

[0016] In the above-mentioned integrated braking and parking device, the guiding structure includes a first guiding member, and the separation limiting portion is arranged on the first guiding member. Along the movement direction of the second stroke of the parking plate, the front cross-section of the separation limiting portion is V-shaped. The V-shaped separation limiting portion can accurately insert between the parking pin shaft and the parking pawl, guide the movement track of the parking pin shaft, and separate the parking pin shaft from the parking pawl. When the foot pedal is depressed to the second stroke to achieve parking, the V-shaped structure stably limits the parking pin shaft at a specific position, maintains the energy storage state of the energy storage element, and makes the parking lock more reliable. When the foot pedal is depressed again to the unlocking stroke, the contact mode between the V-shaped separation limiting portion and the parking pin shaft helps to achieve smooth unlocking. As the parking plate moves, the parking pin shaft is more likely to disengage from the opening of the V-shaped structure, and under the drive of the energy released by the energy storage element, it can cross the separation limiting portion more smoothly.

[0017] In the above-mentioned integrated braking and parking device, the guiding surface is arranged at the rear of the first guiding member and on the side close to the braking groove. The position of the guiding surface ensures that when the parking plate is reset, the parking pin shaft can push the parking pawl to disengage from the braking groove with the shortest and most direct path. Due to being close to the braking groove, under the action of the guiding surface, the parking pin shaft can accurately act on the parking pawl, reducing unnecessary displacement and energy loss, making the unlocking process more efficient and smooth, and improving the user operation experience.

[0018] In the above-mentioned integrated brake parking device, the guide structure also includes a second guide member located behind the first guide member, the tail of the first guide member is provided with a groove, and the front of the second guide member is provided with a protrusion that cooperates with the groove, and the two form a V-shaped guide channel. When the parking pawl is engaged in the brake groove to lock the parking plate, the parking pin shaft is located at the lowest point of the guide channel or in the guide channel that has passed the lowest point. The V-shaped guide channel can accurately guide the movement trajectory of the parking pin shaft. During the parking process, when the parking pawl is engaged in the brake groove to lock the parking plate, the two side walls of the V-shaped structure guide the parking pin shaft so that it can smoothly reach the lowest point of the guide channel or pass the lowest point. This ensures that the parking pin shaft can be stably located in the expected position every time, avoiding deviation or shaking, and provides a reliable basis for subsequent unlocking operations.

[0019] In the above-mentioned integrated brake parking device, the end surface of the first guide member close to the parking pin shaft is provided with a first guide surface extending in the direction of the entrance of the guide channel, and / or the side wall of the second guide member close to the parking pin shaft is provided with a second guide surface, and the second guide surface is inclined in the direction of the lowest point of the guide channel to guide the parking pin shaft into the guide channel. During the parking operation, when the parking pawl is inserted into the brake groove to lock the parking plate, these inclined guide surfaces can guide the parking pin shaft like a "funnel". During the process of the foot pedal stepping on the second stroke, the first guide surface can well guide the parking pin shaft into the guide channel. If the foot pedal steps on the second stroke, the parking pawl can be guided into the guide channel by the second guide surface when the parking plate is reset, ensuring that the parking pin shaft is accurately located at the lowest point of the guide channel or a position beyond the lowest point, providing stable support for parking locking. This greatly improves the accuracy of the parking pin shaft positioning. This design allows the driver to complete the parking operation more quickly and accurately, reducing mistakes caused by unskilled operation or time pressure.

[0020] In the above-mentioned integrated braking and parking device, a fourth guide surface is provided in the groove, which is inclined from the lowest point of the guide channel toward the exit direction of the guide groove. In the unlocking stage, when the parking plate needs to move to disengage the separation limiter from the parking pin shaft, the energy storage element releases energy to drive the parking pin shaft to slide along the fourth guide surface and disengage from the guide channel, and smoothly move toward the exit direction of the guide groove, which greatly improves the success rate and efficiency of unlocking and provides users with a smoother operating experience.

[0021] In the above-mentioned integrated braking and parking device, the braking groove includes: a stop surface, which is arranged non-parallel to the reset direction of the parking plate, and the stop surface abuts against the parking pawl to prevent the parking plate from resetting; a third guiding surface is provided at a position opposite to the stop surface of the braking groove, and the third guiding surface is an inclined surface or a curved surface, so that after the parking pawl is engaged in the braking groove, the parking plate can continue to move relative to the parking pawl along the second stroke direction. When the parking pawl is engaged in the braking groove and the parking plate wants to reset, the stop surface can effectively prevent its reset; the third guiding surface is an inclined surface or a curved surface, so that when the parking plate continues to move after the parking pawl is engaged in the braking groove, the two can move relative to each other. When an unlocking stroke is required, the third guiding surface can prevent the parking pawl from affecting the continuous rotation of the parking plate along the parking direction, so that the guiding structure can continue to move relative to the parking pin shaft, causing the guiding structure to lose the block on the parking pin shaft, allowing the parking pin shaft to cross the guiding structure and realizing the unlocking when the parking plate resets.

[0022] In the above-mentioned integrated braking and parking device, at least part of the projection of the guiding surface on the parking plate is located in the braking groove. At least part of the projection of the guiding surface on the parking plate being located in the braking groove ensures that during the unlocking process, the movement path of the parking pin shaft can accurately correspond to the position of the braking groove, improving the smoothness and reliability of unlocking, avoiding difficult unlocking or failure to unlock, and bringing a better operation experience to the driver.

[0023] In the above-mentioned integrated braking and parking device, the integrated braking and parking 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; there is a preload gap 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 remains at its free length and does not deform; when the foot pedal is depressed 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 of the preload gap and the elastic reset member optimizes the operating feel. In the first stroke, the driver can feel relatively light pedal resistance because only the first elastic reset member works at this time; when entering the second stroke, the second elastic reset member begins to compress or stretch, and the pedal resistance will change significantly. This change provides an intuitive prompt for the driver, allowing the driver to clearly perceive the switching between the braking and parking states, and the operation experience is more comfortable and natural.

[0024] In the above-mentioned integrated braking and parking device, a displacement limiting groove is provided on the parking plate, a movable limiting shaft is provided in the displacement limiting groove, and the limiting shaft is connected to the fixed component. The displacement limiting groove and the limiting shaft cooperate to accurately limit the movement range of the parking plate. During braking and parking operations, the parking plate is prevented from excessive displacement, and the problem of braking or parking failure caused by improper displacement is avoided, thereby ensuring stable operation of the device.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] The braking and parking functions can be realized by stepping on the pedal with different strokes, which can effectively solve the problem that the braking and parking of the existing vehicle braking system require two components to control and have poor operability. The braking and parking functions can be easily realized by only one pedal with different strokes, without the need to use two components to operate separately like the traditional device, which greatly simplifies the driver's operation process, reduces the complexity of operation, and improves the convenience during driving. Integrating the braking and parking functions in one device significantly reduces the layout space on the vehicle chassis compared to the traditional separate braking and parking structure. This is not only conducive to the layout design of the whole vehicle, but also frees up more space for other systems on the chassis, improves space utilization, and is especially suitable for small vehicles or models with high requirements for space layout. The brake groove of the one-way limit structure cooperates with the parking pawl, which can not only ensure the realization of the parking function, but also leave a margin for the relative movement of the parking pawl and the brake groove when the parking plate is unlocked, so that when the pedal is stepped on again to the unlocking stroke, the parking plate can move beyond the displacement of the second stroke, so that the parking pin shaft can pass the separation limit part. The energy storage element stores energy when the distance between the parking pawl and the pin shaft changes, providing active driving force for unlocking and avoiding the tedious operation of manual unlocking. The separation limit part blocks the movement of the pin shaft in the parking state to maintain the energy storage state of the energy storage element. When unlocking, the guide surface pushes the pin shaft 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 by stepping on it again", without the need for an additional release device, simplifying the user's operation process.

[0027] The first stroke only triggers the brake assembly to meet daily deceleration needs; the second stroke realizes parking lock through the cooperation of energy storage elements and guide structures to avoid misoperation; the unlocking stroke ensures accurate positioning of the parking pin shaft and pushes the pawl out of the way through the geometric design of the guide surface to avoid jamming. The three functions of braking, parking and unlocking can be realized by controlling the different strokes and movements of the parking plate with the foot pedal. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2A top view of an integrated braking and parking device of the present invention;

[0030] Figure 3 A three-dimensional diagram of an integrated braking and parking device of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the parking plate in the present invention;

[0032] Figure 5 A three-dimensional diagram of the parking plate, the parking pawl and the parking pin in the present invention;

[0033] Figure 6 It is a schematic diagram of the position at the initial stage of the present invention;

[0034] Figure 7 This is a schematic diagram of the position after the first stroke of the present invention is completed;

[0035] Figure 8 The position diagram of the second stroke process of the present invention is shown in FIG. Figure 1 ;

[0036] Figure 9 The position diagram of the second stroke process of the present invention is shown in FIG. Figure 2 ;

[0037] Figure 10 This is a schematic diagram of the position after the second stroke of the present invention is completed;

[0038] Figure 11 This is a schematic diagram of the position after the unlocking journey of the present invention is completed.

[0039] The accompanying drawings are marked 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 member 310, parking pin shaft 400, energy storage element 500, guide structure 600, first guide member 610, separation limit portion 611, guide surface 612, groove 613, first guide surface 614, fourth guide surface 615, second guide member 620, protrusion 621, second guide surface 622, guide channel 630, shell 700, first elastic return member 710, second elastic return member 720, limit shaft 730. DETAILED DESCRIPTION

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

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

[0043] The parking pawl 300 is connected to the fixed component through an elastic member 310, and the elastic member 310 provides a force to make the parking pawl 300 engage with the brake groove 210 to prevent the parking plate 200 from resetting;

[0044] A parking pin shaft 400 is provided with an energy storage element 500 between it 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 shaft 400 changes; and,

[0045] A guiding structure 600 is fixed on the parking plate 200 and includes a separation limiting portion 611 and a guiding surface 612;

[0046] When the foot pedal 100 is depressed to the first stroke, the braking assembly realizes braking;

[0047] When the foot pedal 100 is continuously depressed to the second stroke, the parking pawl 300 is snapped into the brake groove 210 to lock the parking plate 200. The separation limiting portion 611 blocks the movement of the parking pin shaft 400 and maintains the energy storage state of the energy storage element 500;

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

[0049] When the parking plate 200 resets, the guiding surface 612 pushes the parking pin shaft 400 to move, forcing the parking pawl 300 to disengage from the brake groove 210 to realize unlocking.

[0050] The functions of braking and parking are achieved by stepping on different strokes of the foot pedal 100, which can effectively solve the problem that the braking and parking of the existing vehicle braking system require two components for control and have poor operability. Only by different strokes of one foot pedal 100 can the functions of braking and parking be easily achieved, without the need to operate two components separately as in traditional devices, greatly simplifying the operation process of the driver, reducing the operation complexity, and enhancing the convenience during driving. Integrating the braking and parking functions into one device significantly reduces the layout space on the vehicle chassis compared with the traditional separate braking and parking structures. This is not only beneficial to the overall vehicle layout design but also can create more space for other systems on the chassis, improving the space utilization rate, especially suitable for small vehicles or models with high requirements for space layout. The braking groove 210 of the one-way limit structure cooperates with the parking pawl 300, which can not only ensure the realization of the parking function but also leave a margin for the relative movement of the parking pawl 300 and the braking groove 210 during the unlocking stroke for the parking plate 200, so as to ensure that when the foot pedal 100 is stepped on again to the unlocking stroke, the parking plate 200 can move a displacement exceeding the second stroke, enabling the parking pin 400 to cross the separation limit part 611. The energy storage element 500 stores energy when the distance between the parking pawl 300 and the pin changes, providing an active driving force for unlocking and avoiding the cumbersome operation of manual unlocking. The separation limit part 611 blocks the movement of the pin in the parking state to maintain the energy storage state of the energy storage element 500; the guiding surface 612 pushes the pin to cross the separation limit part 611 through the movement of the parking plate 200 during unlocking, forcing the parking pawl 300 to disengage from the braking groove 210, realizing the intelligent operation of "automatic unlocking by stepping on again", without the need for an additional release device, and simplifying the user operation process.

[0051] The first stroke only triggers the braking component to meet the daily deceleration requirements; the second stroke realizes parking locking through the cooperation of the energy storage element 500 and the guiding structure 600 to avoid misoperation; the unlocking stroke ensures the accurate positioning of the parking pin 400 and pushes the pawl to disengage through the geometric design of the guiding surface 612 to avoid jamming. By controlling different strokes and actions of the parking plate 200 with the foot pedal 100, the operations of braking, parking, and unlocking can be achieved.

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

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] See also Figures 1 to 5 This is an embodiment of an integrated braking parking device of the present invention, including a foot pedal 100, a shell 700 and a brake assembly that is transmission-connected to the foot pedal 100. The connection between the foot pedal 100 and the brake assembly can refer to the prior art. One end of the foot pedal 100 is rotatably connected to the shell 700. The user rotates the foot pedal 100 relative to the shell 700 by stepping on the other end of the foot pedal 100, and the rotation of the foot pedal 100 is controlled according to the stepping depth, that is, the rotation amplitude of the foot pedal 100.

[0057] When the foot pedal 100 is stepped on the first stroke, the parking function is not generated, and only the foot pedal 100 drives the brake assembly to produce a braking effect. A parking plate 200 and a parking pawl 300 are also provided in the housing 700. The parking plate 200 is swingably arranged in the housing 700 and is transmission-connected with the foot pedal 100. The parking plate 200 is driven to swing relative to the housing 700 by the rotation of the foot pedal 100. A brake groove 210 of a one-way limiting structure is provided on the parking plate 200. The brake groove 210 can be opened on the plate body of the parking plate 200 or on the peripheral surface of the parking plate 200. In order to facilitate design and manufacturing, the brake groove 210 in this embodiment is opened on the peripheral wall farthest 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 in 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, that is, the pawl hook can swing relative to the first pin. An elastic member 310 is also provided between the parking pawl 300 and the housing 700. The elastic member 310 can also be fixed on other fixed components except the housing 700. The elastic member 310 provides the parking pawl 300 with a force in the direction of engaging the brake groove 210. Once the parking plate 200 is rotated into place, the parking pawl 300 can be stuck in the brake groove 210, thereby preventing the parking plate 200 from being reset. At this time, since the parking plate 200 cannot be reset, the foot pedal 100 cannot be reset either, and the brake 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 stepped on for the first stroke, the foot pedal 100 is continued to be stepped on to the second stroke, and the parking pawl 300 is stuck in the brake groove 210 to lock the parking plate 200, thereby realizing parking.

[0058] The above structure realizes the braking and parking functions of the whole device, but it is also necessary to operate the foot pedal 100 to release the parking, so it can be realized by the following structure. A parking pin shaft 400 is also provided in the housing 700. In this embodiment, the parking pin shaft 400 is rotatably connected to the housing 700, and can also be rotatably connected to other fixed components. In order to simplify the design, the parking pin shaft 400 in this embodiment is also rotatably connected to the first pin shaft connected with the parking pawl 300. An energy storage element is provided between the parking pin shaft 400 and the parking pawl 300, and the energy storage element stores or releases energy when the distance between the parking pin shaft 400 and the parking pawl 300 changes. Generally, energy is stored when the distance between the parking pin shaft 400 and the parking pawl 300 becomes larger, and energy is released when the distance between the two becomes smaller. For example, the energy storage element can use a torsion spring to achieve the above purpose. A guide structure 600 is also provided on the parking plate 200, and the guide structure 600 includes a separation limit portion 611 and a guide surface 612.

[0059] When the user steps on the second stroke, the separation limiter 611 of the guide structure 600 is inserted between the parking pin shaft 400 and the parking pawl 300, and the parking pawl 300 is close to the outer periphery of the parking plate 200, and the separation limiter 611 pushes the parking pin shaft 400 to rotate away from the parking pawl 300, so that the distance between the two increases, and the energy storage element 500 starts to store energy. When the user steps on the second stroke to park, the separation limiter 611 is still located between the parking pin shaft 400 and the parking pawl 300 and maintains this state. Since the vehicle has been parked, the user can release the foot pedal 100 to keep the vehicle in the parking state. When the user steps on the pedal 100 again to the unlocking stroke, the parking plate 200 moves to disengage the separation limit portion 611 from the parking pin 400, and the energy storage element 500 releases energy to drive the parking pin 400 to cross the separation limit portion 611 and be located between the guide surface 612 and the parking pawl 300. When the user releases the pedal 100, the parking plate 200 is reset, and the guide surface 612 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, thereby achieving unlocking.

[0060] In the above embodiment, the brake assembly can also be braked by the parking plate 200. For example, a brake rope is arranged between the parking plate 200 and the brake assembly, and the parking plate 200 is driven to swing by the foot pedal 100. The parking plate 200 pulls the brake rope to drive the brake assembly to brake. The parking plate 200, the parking pawl 300, the parking pin 400 and other components can be integrated in the housing 700. Not only can the housing 700 protect the above components, but also improve the overall integration to bring convenience to the installation. The device realizes the high integration of the braking and parking functions through the mechanical self-locking of the one-way limit brake groove 210 and the parking pawl 300, the intelligent unlocking of the energy storage element 500 and the guide structure 600, the multi-stage stroke control and the closed integrated design. The various technical features complement each other in function and cooperate closely in structure, and finally achieve the comprehensive advantages of simplified operation, space saving, high reliability and convenient maintenance, providing an innovative solution for the vehicle braking system.

[0061] like Figure 4As shown in the figure, further, the guiding structure 600 includes a first guiding member 610. A separating and limiting portion 611 is provided on the first guiding member 610. Along the second stroke direction of the parking plate 200, the front cross-section of the separating fiber cloth is V-shaped. The V-shaped separating and limiting portion 611 can accurately guide the movement track of the parking pin 400. During the process of stepping on the foot pedal 100 to the second stroke, 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 at the second stroke, the parking pin 400 is stably restricted at 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-shaped guiding effect is better, ensuring the stability of the parking process. The side surface of the first guiding member 610 is in sliding contact with the parking pin 400. The component force of the parking pin 400 on the first guiding 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 braking groove 210.

[0062] The guiding surface 612 is located at the rear of the first guiding member 610 and on the side close to the braking groove 210. The guiding surface 612 is inclined with respect to the movement track when the parking plate 200 is reset, so as to ensure that the guiding surface 612 can push the parking pin 400 and push it away from the braking groove 210. The position of the guiding surface 612 ensures that when the parking plate 200 is reset, the parking pin 400 can push the parking pawl 300 out of the braking groove 210 along the shortest and most direct path. Due to being close to the braking groove 210, under the action of the guiding surface 612, the parking pin 400 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 operation experience.

[0063] Furthermore, the guiding structure 600 further includes a second guiding member 620 located behind the first guiding member 610. A groove 613 is provided at the tail of the first guiding member 610, and a protrusion 621 mating with the groove 613 is provided at the front of the second guiding member 620. The two form a V-shaped guiding channel 630. When the parking pawl 300 is inserted into the braking groove 210 to lock the parking plate 200, the parking pin shaft 400 is located at the lowest point of the guiding channel 630 or within the guiding channel 630 that has passed the lowest point. The second guiding member 620 is provided to prevent the user from directly jumping to the unlocking stroke without accurately controlling the position of the second stroke. When the user steps on the pedal 100 and passes the second stroke, the second guiding member 620 will block the parking pin shaft 400 to prevent the parking pin shaft 400 from directly passing over the first guiding member 610. When the user releases the pedal 100, the parking plate 200 resets, and the parking pin shaft 400 can then smoothly enter the guiding channel 630. When the parking pawl 300 is inserted into the braking groove 210 to lock the parking plate 200, the parking pin shaft 400 is located at the lowest point of the guiding channel 630 or within the guiding channel 630 that has passed the lowest point, so that when the user steps to the unlocking stroke, the parking pin shaft 400 can slide out along the guiding channel 630 to achieve the purpose of passing over the first guiding member 610. The groove 613 of the first guiding member 610 and the protrusion 621 of the second guiding member 620 cooperate to form a V-shaped guiding channel 630. This connection method enhances the stability of the entire guiding structure 600. The groove 613 and the protrusion 621 cooperate with each other, which can not only transmit force but also prevent relative displacement between the guiding members to a certain extent, making the guiding structure 600 more firm and reliable during long-term use. Moreover, the V-shaped structure itself has good mechanical properties and can better withstand the pressure and impact force from the parking pin shaft 400 and other components, further improving the structural stability of the entire device.

[0064] On the basis of the above embodiments, a first guiding surface 614 extending towards the entrance of the guiding channel 630 is provided on the end surface of the first guiding member 610 close to the parking pin shaft 400, and / or a second guiding surface 622 is provided on the side wall of the second guiding member 620 close to the parking pin shaft 400. The second guiding surface 622 is inclined towards the lowest point of the guiding channel 630 to guide the parking pin shaft 400 into the guiding channel 630. In this embodiment, both the first guiding surface 614 and the second guiding surface 622 are provided. The main purpose is to guide the parking pin shaft 400 into the guiding channel 630 during the second stroke. The first guiding surface 614 plays a role during the second stroke, while the second guiding surface 622 plays a guiding role when the parking plate 200 resets after the user steps on the second stroke. The first guiding surface 614 of the first guiding member 610 and the second guiding surface 622 of the second guiding member 620 are both inclined towards the guiding channel 630. During the parking operation, when the parking pawl 300 is engaged in the braking groove 210 to lock the parking plate 200, these inclined guiding surfaces can guide the parking pin shaft 400 like a "funnel". Regardless of any deviation in the position of the parking pin shaft 400 at the initial stage, the guiding surface can gradually guide it into the guiding channel 630, ensuring that the parking pin shaft 400 is accurately located at the lowest point of the guiding channel 630 or a position beyond the lowest point, providing a stable support for parking locking, which greatly improves the positioning accuracy of the parking pin shaft 400. The design of the guiding surface makes the process of the parking pin shaft 400 entering the guiding channel 630 smoother. When the driver performs the parking operation, there is no need to precisely control the position of the parking pin shaft 400 too accurately, and the guiding surface will automatically guide it into place. This reduces the operation difficulty, shortens the time required for the parking operation, and improves the use efficiency. Especially in the scenarios of emergency parking or frequent parking, this design enables the driver to complete the parking operation more quickly and accurately, reducing mistakes caused by unskilled operation or time pressure.

[0065] In addition, a fourth guiding surface 615 is provided in the groove 613 and is inclined from the lowest point of the guiding channel 630 towards the outlet of the guiding groove. The fourth guiding surface 615 can guide the parking pin shaft 400 to smoothly move towards the outlet direction of the guiding groove. This avoids the situation of the parking pin shaft 400 getting stuck or offset in the groove 613, ensuring that it can be accurately positioned between the guiding surface 612 and the parking pawl 300, and then pushing the parking pawl 300 out of the braking groove 210 to achieve reliable unlocking. This design greatly improves the success rate and efficiency of unlocking, providing a smoother operation experience for users. By guiding the parking pin shaft 400 to move along a predetermined path, the fourth guiding surface 615 improves the reliability of the braking and parking device under various working conditions. Whether in frequently used scenarios or in harsh environmental conditions (such as high temperature, low temperature, humidity, etc.), the fourth guiding surface 615 can ensure the accurate movement of the parking pin shaft 400, thus ensuring the normal realization of the braking and parking functions and reducing the risk of failures caused by abnormal movement of components.

[0066] Based on the above embodiments, to implement the braking groove 210 of the one-way limiting structure, the braking groove 210 includes a stop surface 211, which is not parallel to the reset direction of the parking plate 200. In this way, when the parking plate 200 is reset, the contact between the parking pawl 300 and the stop surface 211 can generate a force to prevent the parking plate 200 from resetting, locking the parking plate 200 to achieve the parking function. Of course, it is best that the stop plate is perpendicular to the reset direction of the parking plate 200, that is, the force of the parking pawl 300 on the stop surface 211 completely prevents the parking plate 200 from resetting.

[0067] A third guiding surface 212 is provided at the position of the braking groove 210 opposite to the stop surface 211 or at the top of the parking pawl 300. The third guiding surface 212 is an inclined surface or a curved surface. After the parking pawl 300 is caught in the braking groove 210 and the parking plate 200 continues to move, the third guiding surface 212 can push the parking pawl 300 out of the braking groove 210, and the parking pawl 300 will not be able to hinder the continuous movement of the parking plate 200. The setting of the third guiding surface 212 plays a role during the unlocking stroke. The unlocking stroke requires continuing to step on the foot pedal 100 to drive the parking plate 200 to rotate on the basis of the second stroke. During the process of reaching the unlocking stroke, the parking pawl 300 will interact with the third guiding surface 212. Under the guidance of the third guiding surface 212, the parking pawl 300 gradually exits the braking groove 210 and does not hinder the movement of the parking plate 200. The continuous movement of the parking plate 200 will drive the guiding structure 600 to continue to move. Eventually, the guiding structure 600 will lose the block on the parking pin shaft 400, so that the parking pin shaft 400 can cross the guiding structure 600.

[0068] Continuing from the above embodiments, the projection of the guiding surface 612 on the parking plate 200 is at least partially located within the braking groove 210. When the parking plate 200 resets, the guiding surface 612 pushes the parking pin 400 to move for unlocking. The fact that the projection of the guiding surface 612 on the parking plate 200 is at least partially located within the braking groove 210 ensures that during the unlocking process, the movement path of the parking pin 400 can accurately correspond to the position of the braking groove 210. In this way, the parking pin 400 can more effectively force the parking pawl 300 to disengage from the braking groove 210, reducing the operating force and time required for unlocking, enhancing the smoothness and reliability of unlocking, avoiding difficulties or failures in unlocking, and bringing a better operating experience to the driver.

[0069] Based on the above embodiments, a first elastic reset member 710 is provided within the housing 700. The first elastic reset member 710 can be directly connected to the foot pedal 100 or connected 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 and the rotational axis of the first elastic reset member 710 does not coincide with that of the parking plate 200, such that when the parking plate 200 rotates, the first elastic reset member 710 undergoes elastic deformation, thereby storing 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 also reset.

[0070] Since the first stroke only produces a braking effect and further deep pressing of the foot pedal 100 is required to enter the second stroke for parking, in order to enable the user to clearly perceive that the foot pedal 100 enters the second stroke from the first stroke, a second elastic reset member 720 is provided on the foot pedal 100 or the parking plate 200 in this solution. In this embodiment, one end of the second elastic reset member 720 is fixed to the housing 700, and the other end is connected to the parking plate 200, and a preload gap is reserved between the second elastic reset member 720 and the parking plate 200. The size of the preload gap is equal to the displacement of the parking plate 200 corresponding to the first stroke. That is, during the first stroke, the second elastic reset member 720 does not undergo elastic deformation. Only when the foot pedal 100 enters the second stroke does the second elastic reset member 720 begin to store elastic potential energy, and at this time, the user can clearly perceive an increase in resistance, reminding the user through the foot feeling that they are entering the 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 two elastic reset members, a clear distinction between the braking and parking functions is achieved. In the first stroke, the first elastic reset member 710 and the second elastic reset member 720 have clear division of labor. Only the first elastic reset member 710 acts on the parking plate 200, and the vehicle realizes the braking function. The second elastic reset member 720 does not participate in the work, avoiding the situation of accidentally triggering the parking function, providing clear operation feedback for the driver, and reducing operation errors. When the foot pedal 100 enters the second stroke, the second elastic reset member 720 starts to work and acts together with the first elastic reset member 710 to complete the parking function, enabling the driver to accurately control the vehicle state. The cooperation of the preload gap and the elastic reset member optimizes the operation feel. In the first stroke, the driver can feel relatively light pedal resistance because only the first elastic reset member 710 is working at this time; when entering the second stroke, the second elastic reset member 720 starts to compress or stretch, and the pedal resistance will change significantly. This change provides an intuitive prompt for the driver, allowing the driver to clearly perceive the switching between the braking and parking states, and the operation experience is 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 in the housing 700. The limiting shaft 730 is arranged in the displacement limiting groove 220. The movement stroke of the parking plate 200 can be limited through the limiting shaft 730, that is, the stepping stroke of the foot pedal 100 is limited. During braking and parking operations, the excessive displacement of the parking plate 200 is prevented, avoiding problems such as braking or parking failure caused by improper displacement, and ensuring the stable operation of the device. For example, in scenarios of frequent braking and parking, the consistency and reliability of each operation are guaranteed, and accidents are prevented.

[0073] In the initial state, as Figure 6 shown, the parking pawl 300 and the parking pin shaft 400 approach each other under the action of the energy storage element 500. At the same time, the guiding structure 600 is at a certain distance from the parking pawl 300 and the parking pin shaft 400. When the foot pedal 100 is stepped to the first stroke, the device mainly realizes the braking function. At this time, the guiding structure 600 will approach the parking pawl 300 and the parking pin shaft 400, as Figure 7 shown. When the braking is completed and ready to enter the parking state, the separation limiting portion 611 of the guiding structure 600 will be ready to insert between the parking pawl 300 and the parking pin shaft 400. When the foot pedal 100 is further stepped to the second stroke, the separation limiting portion 611 of the guiding structure 600 separates the parking pin shaft 400 and the parking pawl 300, as Figure 8 、 Figure 9As shown, since the user cannot grasp the position of the second stroke well, it is easy to step over and enter the unlocking stroke, the structure of the combination of the first guide member 610 and the second guide member 620 is adopted. Even if the user steps over the second stroke and directly reaches the unlocking stroke, when the user releases the pedal 100, the parking plate 200 will be reset under the action of the first elastic reset member 710 and the second elastic reset member 720, that is, after the pedal 100 is released, the parking plate 200 will rotate back. At this time, under the guidance of the second guide surface 622, the parking pin shaft 400 will enter the guide channel 630; Figure 10 As shown in the figure, the parking plate 200 is in the lowest position, and as the parking plate 200 returns to its original position, the parking pawl 300 will be re-engaged in the brake groove 210 to complete the parking. When the user steps on 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 approaches the parking pawl 300 under the action of the energy storage element 500, as shown in the figure. Figure 11 As shown, the parking pin shaft 400 will be located between the guide surface 612 and the parking pawl 300. When the user releases the foot pedal 100, the parking plate 200 will be 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 will be driven to rotate. 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 shaft 400, so that the parking pawl 300 no longer hinders the reset of the parking plate 200, thereby achieving unlocking.

[0074] The braking and parking functions can be realized only through different strokes of a foot pedal 100, saying goodbye to the cumbersome traditional two-pedal operation, greatly simplifying the driver's operating process, reducing the probability of operating errors, and improving driving safety and convenience. During operation, the design of components such as the first elastic reset member 710 and the second elastic reset member 720 enables the driver to have different body sensations in different braking and parking states, providing clear operating feedback to help the driver confirm the vehicle status and avoid misoperation. The integrated design integrates the braking and parking functions into one device, reducing the layout space on the vehicle chassis, providing more flexibility for the overall vehicle layout design, and improving the utilization rate of the vehicle's internal space. It is especially suitable for small vehicles or models with high requirements for space layout.

[0075] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. An integrated braking and parking device, comprising a foot pedal and a brake assembly connected to the foot pedal, characterized in that: Also includes: A parking plate is connected to the pedal in a transmission manner, and the parking plate is provided with a brake groove of a one-way limiting structure; A parking pawl connected to the fixed component via an elastic member, wherein the elastic member forces the parking pawl to engage with the brake groove to prevent the parking plate from being reset; An energy storage element is provided 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; and, A guide structure, fixed to the parking plate, comprising a separation limit portion and a guide surface; When the foot pedal reaches the first stroke, the brake assembly realizes braking; When the foot pedal is continuously stepped on to the second stroke, the parking pawl is engaged in the brake groove to lock the parking plate, and the separation limit portion blocks the movement of the parking pin shaft 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 portion to be out of contact with the parking pin shaft, and the energy storage element releases energy to drive the parking pin shaft to cross the separation limit portion and be positioned between the guide surface and the parking pawl; When the parking plate is reset, the guide surface pushes the parking pin shaft to move, forcing the parking pawl to disengage from the brake groove to achieve unlocking.

2. The integrated braking and parking device according to claim 1, wherein The guide structure comprises a first guide member, the separation limit portion is arranged on the first guide member, and along the second stroke movement direction of the parking plate, the front end cross section of the separation limit portion is V-shaped.

3. The integrated braking and parking device according to claim 2, characterized in that, The guide surface is arranged at the rear of the first guide member and close to one side of the braking groove.

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

5. An integrated braking and parking device according to claim 4, characterized in that, The end face of the first guide member close to the parking pin shaft is provided with a first guide surface extending toward the entrance of the guide channel, and / or the side wall of the second guide member close to the parking pin shaft is provided with a second guide surface, and the second guide surface is inclined toward the lowest point of the guide channel to guide the parking pin shaft into the guide channel.

6. The integrated braking and parking device according to claim 4, wherein, A fourth guide surface is arranged in the groove and is inclined from the lowest point of the guide channel toward the outlet direction of the guide groove.

7. An integrated braking and parking device according to claim 1, characterized in that, The brake groove comprises: a stop surface, which is arranged non-parallel to the reset direction of the parking plate, and the stop surface abuts against the parking pawl to prevent the parking plate from resetting; A third guide surface is provided at a position opposite to the stop surface of the brake groove, and 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 along the second stroke direction.

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

9. The integrated braking and parking device according to claim 1, characterized in that: The integrated brake parking device also includes a first elastic return member and a second elastic return 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 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 remains at its free length and does not deform. When the foot pedal is depressed to the second stroke, the displacement of the parking plate eliminates the preload clearance, and the second elastic reset member begins to compress or stretch.

10. An integrated braking and parking device as claimed in claim 1, wherein, A displacement limiting groove is formed on the parking plate, and a movable limiting shaft is arranged in the displacement limiting groove. The limiting shaft is connected to a fixed component.

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