Novel pedal feeling simulation device for automobile braking

Abstract

The utility model discloses a novel pedal feeling simulation device for automobile braking, which belongs to the field of automobile braking, solves the problem that the existing brake pedal feeling simulation device is complicated in structure and poor in flexibility, and comprises a cylinder body, a cylinder head, a cylinder tail and a pressing rod. The force of the lifting rod sliding up and down along with the pedal is used for driving the valve plate to synchronously move in the cylinder body, the angle of the closed elastic piece can be controlled through extrusion of liquid in the cylinder body in the moving process, and closing of the closed groove is controlled through vertical swinging of one end of the closed elastic piece in the closed groove. The damping force is provided for the vertical sliding of the lifting rod, the damping force is further provided for the lifting rod through the arrangement of the spring set in the cylinder body, the device can simulate the touch sense of the pedal more truly, the overall structure of the device is simple, additional control valves and pistons do not need to be additionally arranged, and the cost of the device is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of automobile braking, and in particular relates to a novel pedal feeling simulation device for automobile braking. Background Art

[0002] Electromechanical braking is an emerging braking technology that can meet the requirements of higher-level automotive autonomous driving. It combines electronic control technology and mechanical braking systems to provide vehicles with more efficient and intelligent braking solutions. The system achieves precise control of the vehicle's braking system through an electronic control unit. In this braking system, the brake pedal feel obtained by the driver when stepping on the brake pedal is usually achieved through a pedal feel simulation device. Currently, the industry usually uses elastic elements to simulate the pedal feel.

[0003] Chinese utility model patent CN215322503U discloses a pedal feel simulation device comprising: a cylinder body, one end of which is open, the other end is closed, and the inner cavity is filled with fluid; a piston is arranged in the cylinder body and divides the inner cavity of the cylinder body into a first cavity and a second cavity; an elastic element is located between the end of the cylinder body and the piston and can apply elastic restoring force to the piston as the piston moves; a damping channel connects the first cavity and the second cavity and is used to provide damping force when the fluid passes through;

[0004] The above design allows the piston to move up and down steadily inside the cylinder by pressing the brake pedal. When the piston moves, the liquid inside the cylinder will pass through the one-way valve inside the piston due to the squeezing of the piston. The process of the liquid passing through the piston can provide damping force for the pressing of the upper brake pedal. However, this design has certain problems when used. Specifically, it is necessary to install multiple sets of one-way valves in the piston to allow the liquid inside the cylinder to circulate. The operation of installing one-way valves inside the piston takes a certain amount of time. In addition, the installation of one-way valves invisibly increases the cost of equipment operation and affects the normal use of the equipment itself. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In order to solve the problems raised in the above background technology, the utility model adopts the following technical solutions.

[0007] A novel automobile brake pedal feel simulation device comprises a cylinder body, a cylinder head, a cylinder tail and a lifting assembly, wherein the cylinder head is fixedly mounted on the upper end of the cylinder body, the cylinder tail is fixedly mounted on the lower end of the cylinder body, sliding grooves which are in the same straight line and connected to the interior of the cylinder body are provided in the cylinder head and the cylinder tail, the lifting assembly is slidingly mounted inside the sliding groove, the cylinder body is filled with liquid, a damping mechanism for promoting the flow of liquid is arranged inside the cylinder body, a closed spring piece which can swing as the lifting assembly moves up and down is arranged in the damping mechanism, and the damping force on the lifting assembly is adjusted by the swing of the closed spring piece.

[0008] As a preferred technical solution of the utility model, the damping mechanism includes a matching base, a valve plate, a closing spring, a closing groove and a spring group. The matching base is slidably installed inside the cylinder body, the valve plate is fixedly installed on the upper surface of the matching base, a plurality of closing grooves are equidistantly provided inside the valve plate, a closing spring is fixedly installed at one end of the closing groove, the end of the closing spring slides up and down in the closing groove through the extrusion of the liquid inside the cylinder body, and a spring group is arranged inside the cylinder body at the bottom end of the matching base.

[0009] As a preferred technical solution of the utility model, the spring group is at least one of a disc spring and a cylindrical spring. When in use, the spring group is sleeved outside the lifting component, and a circular gasket is fixedly installed at the bottom end of the spring group.

[0010] As a preferred technical solution of the utility model, the mating base includes a connecting base plate, a mating groove and a reinforcement block. The connecting base plate is slidably connected to the inside of the cylinder body, the reinforcement block is fixedly installed on the upper surface of the connecting base plate, a reinforcement groove is provided on the valve plate corresponding to the reinforcement block, the reinforcement block passes through the reinforcement groove to fix the valve plate to the upper surface of the connecting base plate, and a mating groove corresponding to the closed groove is provided in the connecting base plate.

[0011] As a preferred technical solution of the utility model, the lifting assembly includes a lifting rod, a pressing boss and a top connecting block. The lifting rod moves through the sliding groove so that the lifting rod moves back and forth along the axis of the sliding groove. A pressing boss is fixedly provided on the side wall of the lifting rod. The bottom end of the pressing boss is in extrusion contact with the upper surface of the valve plate, and a top connecting block is fixedly installed on the top of the lifting rod.

[0012] As a preferred technical solution of the utility model, a bottom sealing ring is fixedly installed inside the cylinder tail at the bottom end of the lifting assembly, and the lifting rod passes through the sealing ring and is slidably connected to the inner wall of the sealing ring.

[0013] As a preferred technical solution of the utility model, the lifting assembly also includes a dust ring, which is sleeved on the outside of the lifting rod and fixedly installed inside the cylinder head.

[0014] As a preferred technical solution of the utility model, the cylinder head and the cylinder tail are both provided with channels communicating with the cylinder body, the outer ends of the channels are provided with sealing plugs, and the outer sleeves of the sealing plugs are provided with sealing gaskets.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) In the present invention, by setting a damping mechanism, the pressure rod is driven to move along the axial direction of the simulator, and the spring assembly is compressed to obtain a pedal feel. At the same time, the pressure rod drives the valve plate to move, and the damping fluid inside the simulator pushes the closing spring of the valve plate and passes through the closing groove. When the external force of the pedal arm is unloaded, the spring assembly drives the pressure rod and the valve plate back to the initial state. At this time, the closing spring is in a closed state due to the pressure of the damping fluid, and the damping fluid cannot pass through the closing groove, thereby generating a damping effect, so that the device can simulate the pedal touch more realistically, and the overall structure of the device is simple, without the need to add additional control valves and pistons, thereby reducing the cost of the device itself;

[0017] (2) In the utility model, by providing a sealing mechanism and a cylinder head and a cylinder tail, the upper and lower ends of the cylinder body can be sealed quickly and stably, thereby ensuring the overall sealing effect of the cylinder body and preventing leakage of liquid inside the cylinder body. In addition, subsequent discharge, replenishment or replacement of the liquid is simpler and more convenient, thereby improving the practical effect of the equipment itself and ensuring the stability of the equipment during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the overall external structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the internal structure of the cylinder body of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the disassembled structure of the damping mechanism of the utility model;

[0021] Figure 4 It is an enlarged structural schematic diagram of the damping mechanism in the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the matching base in the utility model;

[0023] Figure 6 It is a structural schematic diagram of the disc spring in the utility model;

[0024] Figure 7 It is a structural schematic diagram of the cylindrical spring in the utility model;

[0025] Figure 8 It is a structural schematic diagram of the lifting rod in the utility model;

[0026] Fig. 9 This is a schematic diagram of the connection structure of the lifting assembly in the utility model;

[0027] Fig.10 It is a schematic diagram of the structure of the utility model connected with the pedal.

[0028] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0029] 1. Cylinder body; 2. Cylinder head; 3. Cylinder tail; 4. Lifting assembly; 41. Pressure rod; 42. Pressing boss; 43. Top connecting block; 44. Bottom sealing ring; 45. Dust ring; 5. Damping mechanism; 51. Matching base; 511. Connecting bottom plate; 512. Matching groove; 513. Reinforcement block; 514. Reinforcement groove; 52. Valve plate; 53. Closing spring; 54. Closing groove; 55. Spring group; 551. Disc spring; 552. Cylindrical spring; 6. Sealing plug. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0033] Depend on Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a novel automobile brake pedal feel simulation device comprises a cylinder body 1, a cylinder head 2, a cylinder tail 3 and a lifting assembly 4, wherein the cylinder head 2 is fixedly mounted on the upper end of the cylinder body 1, the cylinder tail 3 is fixedly mounted on the lower end of the cylinder body 1, sliding grooves which are in the same straight line and communicated with the interior of the cylinder body 1 are opened in the cylinder head 2 and the cylinder tail 3, the lifting assembly 4 is slidably mounted in the sliding grooves, the cylinder body 1 is filled with liquid, a damping mechanism 5 for promoting the flow of liquid is arranged inside the cylinder body 1, a closing spring piece 53 which can swing with the up and down movement of the lifting assembly 4 is arranged in the damping mechanism 5, and the damping force on the lifting assembly 4 is adjusted by the swing of the closing spring piece 53.

[0034] In this embodiment, the damping mechanism 5 includes a matching base 51, a valve plate 52, a closing spring piece 53, a closing groove 54 and a spring group 55. The matching base 51 is slidably installed inside the cylinder body 1, and the valve plate 52 is fixedly installed on the upper surface of the matching base 51. A plurality of closing grooves 54 are equidistantly provided inside the valve plate 52. A closing spring piece 53 is fixedly installed at one end of the closing groove 54. The end of the closing spring piece 53 slides up and down in the closing groove 54 through the extrusion of the liquid inside the cylinder body 1. The spring group 55 is arranged at the bottom end of the matching base 51 inside the cylinder body 1. The device is directly connected to the brake system in use. When the pedal arm is rotated by an external force, the lifting assembly moves axially along the cylinder body 1, and the bottom end of the pedal presses the lifting assembly 4 to allow the lifting assembly 4 to slide inside the cylinder body 1, the cylinder head 2 and the cylinder tail 3. Specifically, when the lifting assembly 4 moves downward, the valve plate 52 and the matching base 51 will move downward synchronously driven by the lifting assembly 4. At this time, the closing spring piece 53 inside the valve plate 52 is squeezed and pushed by the liquid inside the cylinder body 1, and the closing spring piece 53 will be tilted to the upper end as a whole, so that the closing spring piece 53 is separated from the inside of the closing groove 54, and the overall opening of the closing groove 54 is expanded, which is convenient for the internal liquid to pass through the valve plate. 52 flows upward, and when the valve plate 52 moves downward, the spring group 55 is compressed into a power storage state under the push of the matching base 51, thereby obtaining a pedal feel. During the power storage process, it can provide a damping force for the lifting component 4. When the pedal is released, the lifting component 4 loses external extrusion. At this time, the spring group 55 will release its own accumulated elastic force to drive the lifting component 4 to move upward. During the upward movement of the lifting component 4, the upper end of the spring group 55 pushes the matching base 51 and the valve plate 52 to move upward synchronously. The upper surface of the closing spring sheet 53 is slowly reset to the closing groove 54 under the extrusion of the upper liquid until it is closed. The spring piece 53 fits completely with the closed groove 54. During the closing process of the closed spring piece 53, the damping fluid cannot pass through the closed groove 54, thereby generating a damping effect. When in use, the closed spring piece 53 is in a strip shape as a whole, and one end of the closed spring piece 53 is fixedly connected to the inner wall of the closed groove 54. The other side of the closed spring piece 53 will swing up and down inside the closed groove 54 with the different squeezing directions of the liquid. This swinging process can open or close the closed groove 54, providing damping force for the movement of the lifting assembly 4, thereby ensuring the working quality of the equipment when in use and being able to better simulate the feeling of using a pedal.

[0035] By the attached Figure 6 and Figure 7As shown, in this embodiment, the spring group 55 is at least one of the disc spring 551 and the cylindrical spring 552. When in use, the spring group 55 is sleeved on the outside of the lifting component 4, and a circular gasket is fixedly installed at the bottom end of the spring group 55. In use, two different elastic components can be used according to needs to provide a return damping force for the lifting component 4 during the return stroke. The installation of the circular gasket at the bottom end of the spring group 55 can further adjust the overall length of the spring group 55 and the distance between the spring group 55 and the valve plate 52, so as to control the magnitude of the elastic force of the spring group 55 itself.

[0036] By the attached Figure 5 As shown, in this embodiment, the matching base 51 includes a connecting bottom plate 511, a matching groove 512 and a reinforcing block 513. The connecting bottom plate 511 is slidably connected to the inside of the cylinder body 1, and the reinforcing block 513 is fixedly installed on the upper surface of the connecting bottom plate 511. A reinforcing groove 514 is provided on the valve plate 52 corresponding to the reinforcing block 513. The reinforcing block 513 passes through the reinforcing groove 514 to fix the valve plate 52 to the upper surface of the connecting bottom plate 511. A matching groove 512 corresponding to the closed groove 54 is provided in the connecting bottom plate 511. The overall specifications, shape and size of the matching groove 512 are consistent with the closed groove 54 inside the valve plate 52, which can assist the circulation of liquid. In use, the valve plate 52 is attached to the upper surface of the connecting bottom plate 511, and then The top of the reinforcement block 513 is aligned with the inner wall of the reinforcement groove 514, and then the top of the reinforcement block 513 is pressed into the reinforcement groove 514. The reinforcement block 513 consists of a bottom cylinder and an upper spherical block. When the reinforcement block 513 is pressed into the reinforcement groove 514, the spherical block at the upper end of the reinforcement block 513 first passes through the reinforcement groove 514, wherein the radius of the spherical block is slightly smaller than the inner diameter of the reinforcement groove 514, and then the spherical block passes through the reinforcement groove 514, so that the bottom cylinder on the surface of the reinforcement block 513 enters the reinforcement groove 514, completing the combination of the matching base 51 and the valve plate 52, and the opening of the matching groove 512 allows the liquid to pass through the matching base 51 to squeeze the closing spring 53, thereby realizing the damping force.

[0037] By the attached Figure 8As shown, in this embodiment, the lifting assembly 4 includes a pressure rod 41, a pressing boss 42 and a top connecting block 43. The pressure rod 41 movably passes through the sliding groove so that the pressure rod 41 reciprocates along the axis of the sliding groove. A pressing boss 42 is fixedly provided on the side wall of the pressure rod 41. The bottom end of the pressing boss 42 is in compression contact with the upper surface of the valve plate 52. A top connecting block 43 is fixedly installed on the top of the pressure rod 41. During use, the lifting assembly 4 can be quickly connected to the pedal as a whole through the use of the top connecting block 43. Then, by pressing the pedal, the position of the pressure rod 41 as a whole is squeezed, so that the pressure rod 41 slides inside the cylinder head 2, the cylinder tail 3 and the cylinder body 1, and slides on the slide. During the movement, the pressing boss 42 can be used, and the raised part of the pressing boss 42 itself can fit tightly with the upper surface of the valve plate 52. When the pressure rod 41 moves up and down, it can drive the valve plate 52 to move down synchronously. When the pressure rod 41 is subsequently acted upon by the spring group 55 and rebounds, the pressing boss 42 can also limit the highest position of the valve plate 52. When the lifting component 4 is processed and manufactured, a group of annular grooves can be opened on the outer surface of the pressure rod 41, and a clamp can be installed inside the groove. The clamp installed in the groove in the pressure rod 41 is used instead of the pressing boss 42, which simplifies the manufacturing process of the pressure rod 41 and reduces the use cost of the equipment.

[0038] By the attached Figure 8 As shown, in this embodiment, a bottom sealing ring 44 is fixedly installed at the bottom end of the lifting assembly 4 inside the cylinder tail 3, and the pressure rod 41 passes through the sealing ring 44 and is slidably connected to the inner wall of the sealing ring 44. During use, the use of the bottom sealing ring 44 can ensure the sealing of the sliding groove jointly opened inside the cylinder body 1, the cylinder head 2 and the cylinder tail 3. When the pressure rod 41 slides up and down in the sliding groove, the liquid inside the cylinder body 1 will not leak, thereby ensuring the sealing effect of the equipment itself.

[0039] By the attached Fig. 9 As shown, in this embodiment, the lifting assembly 4 also includes a dust ring 45, which is sleeved on the outside of the pressure rod 41 and fixedly installed inside the cylinder head 2. During use, the installation of the dust ring 45 can protect the external top part of the pressure rod 41, strengthen the sealing effect of the pressure rod 41 itself, and prevent external dust from following the up and down sliding of the pressure rod 41 into the cylinder body 1.

[0040] By the attached Figure 8 As shown, in this embodiment, the cylinder head 2 and the cylinder tail 3 are both provided with channels connected to the cylinder body 1, the outer ends of the channels are provided with sealing plugs 6, and the outer sides of the sealing plugs 6 are provided with sealing gaskets. During use, by installing the sealing plugs 6, the channels connecting the cylinder head 2 and the cylinder tail 3 with the cylinder body 1 can be quickly sealed and opened, and subsequent replenishment of liquid or discharge of excess liquid is very convenient, and the installation of the sealing gasket further enhances the sealing effect of the equipment itself.

[0041] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A novel automobile brake pedal feel simulation device, comprising a cylinder body (1), a cylinder head (2), a cylinder tail (3) and a lifting assembly (4), wherein the cylinder body (1) is fixedly mounted with the cylinder head (2) at the upper end, the cylinder body (1) is fixedly mounted with the cylinder tail (3) at the lower end, the cylinder head (2) and the cylinder tail (3) are provided with sliding grooves in the same straight line and connected with the inside of the cylinder body (1), and the lifting assembly (4) is slidably mounted in the sliding groove, characterized in that: The cylinder (1) is filled with liquid, and a damping mechanism (5) for promoting the flow of the liquid is arranged inside the cylinder (1). A closing spring (53) is arranged inside the damping mechanism (5) and can swing along with the upward and downward movement of the lifting component (4). The damping force on the lifting component (4) is adjusted by the swing of the closing spring (53).

2. The novel automobile brake pedal feel simulation device according to claim 1 is characterized in that: The damping mechanism (5) comprises a matching base (51), a valve plate (52), a closing spring piece (53), a closing groove (54) and a spring group (55); the matching base (51) is slidably mounted inside the cylinder body (1); the valve plate (52) is fixedly mounted on the upper surface of the matching base (51); a plurality of closing grooves (54) are equidistantly arranged inside the valve plate (52); a closing spring piece (53) is fixedly mounted at one end of the closing groove (54); the end of the closing spring piece (53) swings up and down in the closing groove (54) due to the squeezing of the liquid inside the cylinder body (1); and a spring group (55) is arranged inside the cylinder body (1) at the bottom end of the matching base (51).

3. The novel automobile brake pedal feel simulation device according to claim 2 is characterized in that: The spring group (55) is at least one of a disc spring (551) and a cylindrical spring (552). When in use, the spring group (55) is sleeved on the outside of the lifting component (4), and a circular gasket is fixedly installed at the bottom end of the spring group (55).

4. The novel automobile brake pedal feel simulation device according to claim 2 is characterized in that: The mating base (51) comprises a connecting base plate (511), a mating groove (512) and a reinforcing block (513); the connecting base plate (511) is slidably connected to the inside of the cylinder body (1); the reinforcing block (513) is fixedly mounted on the upper surface of the connecting base plate (511); a reinforcing groove (514) is provided on the valve plate (52) corresponding to the reinforcing block (513); the reinforcing block (513) passes through the reinforcing groove (514) to fix the valve plate (52) to the upper surface of the connecting base plate (511); and a mating groove (512) corresponding to the closing groove (54) is provided in the connecting base plate (511).

5. The novel automobile brake pedal feel simulation device according to claim 1 is characterized in that: The lifting assembly (4) comprises a pressure rod (41), a pressing boss (42) and a top connecting block (43); the pressure rod (41) moves through the sliding groove so that the pressure rod (41) moves back and forth along the axis of the sliding groove; a pressing boss (42) is fixedly arranged on the side wall of the pressure rod (41); the bottom end of the pressing boss (42) is in compression contact with the upper surface of the valve plate (52); and a top connecting block (43) is fixedly installed on the top of the pressure rod (41).

6. The novel automobile brake pedal feel simulation device according to claim 5 is characterized in that: A bottom sealing ring (44) is fixedly installed inside the cylinder tail (3) at the bottom end of the lifting assembly (4), and the pressure rod (41) passes through the sealing ring (44) and is slidably connected to the inner wall of the sealing ring (44).

7. The novel automobile brake pedal feel simulation device according to claim 6 is characterized in that: The lifting assembly (4) further comprises a dustproof ring (45), which is sleeved on the outside of the pressure rod (41) and fixedly installed inside the cylinder head (2).

8. The novel automobile brake pedal feel simulation device according to claim 1 is characterized in that: The cylinder head (2) and the cylinder tail (3) are both provided with channels communicating with the cylinder body (1), the outer ends of the channels are provided with sealing plugs (6), and the outer sides of the sealing plugs (6) are provided with sealing gaskets.

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