Braking force transmission structure, braking system and vehicle

Abstract

The utility model discloses a braking force transmission structure which is used for being connected between a pedal assembly and a braking assembly, and the pedal braking force transmission structure comprises an adapter shell (1), a first end (2) and a second end (3), the flexible protective cover (2) is arranged outside the adapter shell and connected with the first end of the adapter shell, and at least two elastic clamping pieces (21) are arranged in the flexible protective cover; the head end of the input rod (3) is used for being connected with a pedal assembly, and the tail end of the input rod (3) penetrates through a center hole of the flexible protective cover and a center hole of the adapter shell to be used for being connected with a brake assembly. The retainer (4) is arranged in the adapter shell and arranged on the input rod in a sleeving mode so that the retainer and the input rod can synchronously and linearly move, and the axial end face (42) of the retainer is provided with a protruding part (41) protruding outwards in the axial direction; when the input rod (3) moves in the first direction (P2), the protruding part (41) of the retainer extends out of the groove (11) and extrudes the flexible protective cover (2), so that the elastic clamping piece (21) of the flexible protective cover clamps the input rod, and the input rod is prevented from moving in the first direction.

Description

Technical Field

[0001] The utility model relates to a vehicle component, in particular to a transmission structure of braking force. Background Art

[0002] The vehicle braking system is an important part of automobile safety. Its main function is to slow down the moving vehicle or stop it when necessary.

[0003] The braking system of a modern car usually includes: a brake pedal, which the driver activates by stepping on the brake pedal; a brake pump assembly, which converts the mechanical force of the pedal into hydraulic pressure and then into mechanical force to push the brake to work when the driver steps on the brake pedal; the brake, which is the part that contacts the wheel and generates braking force; and a brake control system, such as an IPB system or a DPB system.

[0004] The IPB (Integrated Power Brake) system is an intelligent integrated braking system that combines the traditional braking system with intelligent control technology to achieve precise control and optimization of vehicle braking.

[0005] The DPB (Decoupled Power Brake) system is an advanced electronically controlled braking technology that combines the advantages of a modular braking system and an integrated braking system, giving the vehicle better stability and handling.

[0006] However, the current vehicle braking system still has some problems. For example, the stepped pedal often produces a loud impact noise due to its rapid rebound when it is reset. Utility Model Content

[0007] One of the purposes of the utility model is to provide a braking force transmission structure, which can effectively reduce the noise when the brake pedal is reset and improve the user experience.

[0008] In order to achieve the above object, the utility model proposes a braking force transmission structure, which is used to connect between a pedal assembly and a brake assembly, wherein the pedal braking force transmission structure includes:

[0009] The adapter housing has a groove on its end surface at the first end in the axial direction;

[0010] A flexible protective cover, which is arranged outside the adapter housing and connected to the first end of the adapter housing, and the flexible protective cover has at least two elastic clamping members built therein;

[0011] An input rod, the head end of which is used to connect with the pedal assembly, and the tail end of which passes through the center hole of the flexible protective cover and the center hole of the adapter housing to connect with the brake assembly;

[0012] A retainer is disposed in the adapter housing and sleeved on the input rod so as to be able to move linearly synchronously with the input rod, and an axial end surface of the retainer has a protrusion protruding axially outward;

[0013] When the input rod moves in the first direction, the protrusion of the retaining frame extends from the groove and presses the flexible protective cover, so that the elastic clamping member of the flexible protective cover clamps the input rod to hinder the movement of the input rod in the first direction.

[0014] Furthermore, in some embodiments of the present invention, the at least two elastic clamping members are arranged symmetrically in the circumferential direction with the axis of the flexible protective cover as the center of symmetry.

[0015] Furthermore, in some embodiments of the present invention, the flexible protective cover includes a disc portion provided at the tail end, a port portion provided at the head end, and a tapered portion connected between the disc portion and the port portion.

[0016] Furthermore, in some embodiments of the present invention, each of the elastic clamping members comprises:

[0017] An end portion built into the disc portion, the end portion having a pressure-bearing portion extending in a direction substantially parallel to an axial end surface of the disc portion;

[0018] a tilting foot built into the tapered portion;

[0019] The clamping portion is bent relative to the inclined support leg, and the clamping portion is built into the port portion.

[0020] Furthermore, in some embodiments of the present invention, the central hole of the flexible protective cover is a waist-shaped hole.

[0021] Furthermore, in some embodiments of the present invention, a tapered portion is provided on the outer circumferential surface of the input rod, and the outer diameter of the tapered portion gradually decreases along the first direction.

[0022] Furthermore, in some embodiments of the present invention, the first end of the adapter housing has a connecting groove extending in a circumferential direction, and the rear end of the flexible protective cover is clamped in the connecting groove.

[0023] Furthermore, in some embodiments of the present invention, the first end of the adapter housing has a flange, and a flange groove is provided on the inner wall of the flexible protective cover, and the flange is correspondingly clamped in the flange groove.

[0024] Furthermore, in some embodiments of the present invention, at least two protrusions are provided, which are arranged symmetrically in the circumferential direction with the axis of the retaining frame as the center of symmetry.

[0025] Another object of the utility model is to provide a braking system, which can effectively reduce the noise when the brake pedal is reset and improve the user experience.

[0026] Based on the above purpose, the utility model also provides a braking system, which includes the braking force transmission structure described above.

[0027] Another object of the utility model is to provide a vehicle with less braking noise.

[0028] Based on the above purpose, the utility model also provides a vehicle, which includes the braking system as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A braking force transmitting structure is partially shown.

[0030] Figure 2 A cross-sectional view of the braking force transmission structure described in the utility model in one embodiment is shown.

[0031] Figure 3 A schematic diagram of the three-dimensional structure of a retaining frame in the braking force transmission structure described in the utility model in one embodiment is shown.

[0032] Figure 4 The figure shows the state of the braking force transmission structure of the utility model in a natural state.

[0033] Figure 5 The figure shows the state of the braking force transmission structure of the utility model when the pedal is stepped on.

[0034] Figure 6 The figure shows the state of the braking force transmission structure of the utility model when the pedal rebounds quickly.

[0035] Figure 7 The figure shows the state of the brake force transmission structure pedal of the utility model when it is further reset.

[0036] Figure 8 A schematic diagram of the three-dimensional structure of a flexible protective cover in the braking force transmission structure described in the utility model in one embodiment is shown.

[0037] Fig. 9 A schematic diagram of the three-dimensional structure of an elastic clamping member in the braking force transmission structure described in the utility model in one embodiment is shown.

[0038] Fig.10 A schematic structural diagram of an input rod in the braking force transmission structure of the utility model in one embodiment is shown.

[0039] Fig.11 A schematic structural diagram of an adapter housing in the braking force transmission structure of the utility model in one embodiment is shown. DETAILED DESCRIPTION

[0040] The braking force transmission structure of the present invention will be further explained and illustrated below in conjunction with the accompanying drawings and specific embodiments of the specification. However, such explanation and illustration do not constitute an improper limitation on the technical solution of the present invention.

[0041] The vehicle's braking system is an important part of vehicle safety. Its main function is to slow down the moving vehicle or stop it when necessary.

[0042] The braking system of a vehicle mainly includes a pedal. When braking, the operator steps on the pedal, and then the braking force is transmitted to the brake assembly through the braking force transmission structure, such as the hydraulic pump of the brake assembly. When the brake needs to be released, the operator releases the pedal, and the pedal rebounds or resets under the action of the reset force. These working processes are all known.

[0043] However, in the current braking system, pedal resetting is often accompanied by loud noise, which affects the operator's experience.

[0044] For example, Figure 1 A braking force transmission structure is schematically shown. When braking, the pedal (not shown) is stepped on, and the input rod 3 is pushed to move in the braking direction P1 through the pedal connecting rod 10, thereby transmitting the braking force to the brake assembly. In this case, the retainer 4 for mounting the brake signal transmission element will move along with the input rod 3 in the braking direction P1, so that the retainer 4 leaves the inner axial end surface of the adapter housing 1.

[0045] When the operator releases the pedal, the input rod 3 will quickly rebound with the retaining frame 4 in the reset direction P2 opposite to the braking direction P1, which will cause the retaining frame 4 to hit the inner axial end surface of the adapter housing 1 with a large force, thereby generating obvious impact noise.

[0046] In order to solve the above problems, the utility model proposes a braking force transmission structure in one implementation.

[0047] Figure 2 A cross-sectional view of the braking force transmission structure described in the utility model in one embodiment is shown.

[0048] In some embodiments, the braking force transmission structure is used to connect between the pedal assembly and the brake assembly. Figure 2 As shown, the pedal braking force transmission structure may include:

[0049] The adapter housing 1 has a groove 11 formed on the end surface of the first end in the axial direction;

[0050] A flexible protective cover 2 for preventing pollutants from entering the interior of the adapter housing, which is arranged outside the adapter housing 1 and connected to the first end of the adapter housing 1, and the flexible protective cover 2 has at least two elastic clamping members 21 built therein;

[0051] An input rod 3, the head end of which is used to connect with a pedal assembly, such as a pedal connecting rod (not shown in the figure), and the tail end of which passes through the central hole of the flexible protective cover 2 and the central hole of the adapter housing 1 to be connected with a brake assembly (not shown in the figure);

[0052] The retainer 4 for mounting the brake signal transmission element is arranged in the adapter housing 1, and the retainer 4 is sleeved on the input rod 3 so as to be able to move axially synchronously with the input rod 3, such as Figure 3 As shown, the axial end surface 42 of the retainer 4 has a protrusion 41 protruding axially outward.

[0053] It should be noted that, in the present invention, a flexible protective cover refers to a protective cover that can be deformed to a certain extent under the action of force.

[0054] Figure 4 The figure shows the state of the braking force transmission structure of the utility model in a natural state.

[0055] like Figure 4 As shown, in the natural state when the pedal is not stepped on, the retaining frame 4 is located on the inner side of the first end of the adapter housing 1, and the protrusion 41 of the retaining frame 4 extends out through the groove 11 on the adapter housing. The protrusion 41 can naturally contact the rear end surface of the flexible protective cover, but does not squeeze the rear end surface of the flexible protective cover, or the squeezing force is very small and insufficient to deform the elastic clamp.

[0056] Figure 5 The figure shows the state of the braking force transmission structure of the utility model when the pedal is stepped on.

[0057] like Figure 5 As shown, when the pedal is stepped on, the input rod 3 moves in the braking direction P1, thereby transmitting the braking force to the brake assembly. In this case, the retainer 4 moves in the braking direction P1 along with the input rod 3, thereby causing the retainer 4 to leave the inner axial end surface of the adapter housing 1, and at this time, the protrusion 41 of the retainer 4 also escapes from the groove 11. Of course, at this time, the protrusion 41 of the retainer 4 does not contact the rear end surface of the flexible protective cover.

[0058] Figure 6 The figure shows the state of the braking force transmission structure of the utility model when the pedal rebounds quickly.

[0059] like Figure 6 As shown, when the pedal is released, the input rod 3 will quickly rebound with the retaining frame 4 in the reset direction P2 opposite to the braking direction P1. At this time, the protrusion 41 of the retaining frame 4 will extend from the groove 11 and first squeeze the rear end face 26 of the flexible protective cover 2, causing the rear end face 26 of the flexible protective cover to deform, thereby causing the built-in elastic clamping member 21 to deform, so that at least two elastic clamping members 21 are relatively close in the radial direction to apply a clamping force to the input rod. This clamping force acts like a "brake" to apply resistance to the movement of the input rod in the reset direction P2 (i.e., the first direction), thereby reducing the reset speed of the input rod. Figure 6 It can be seen that in this state, the axial end face 42 of the retainer 4 has not yet contacted the inner axial end face 12 of the adapter housing, so when the pedal rebounds quickly until the protrusion 41 squeezes the flexible protective cover, basically no impact noise is generated.

[0060] In this case, if Figure 7 As shown, as the input rod 3 further moves in the reset direction P2 at a slower reset speed, the retainer 4 continues to move in the reset direction P2 until its axial end face 42 contacts the inner axial end face 12 of the adapter housing 1. Since this process occurs at a low speed, the sound of the axial end face 42 contacting the inner axial end face 12 of the adapter housing 1 is almost eliminated. At the same time, during this process, the protrusion 41 further axially presses the rear end face 26 of the flexible protective cover 2, so that at least two elastic clamping members 21 continue to apply clamping force to the input rod 3 to brake its movement in the reset direction.

[0061] It can be seen that the utility model can significantly reduce and eliminate the "hard-on-hard" impact noise during the input rod resetting process through the above structure.

[0062] In some embodiments of the present invention, at least two elastic clamping members 21 are arranged symmetrically in the circumferential direction with the axis of the flexible protective cover as the symmetry center. The symmetrical arrangement can make the clamping force more stable.

[0063] Of course, in some other optional embodiments, at least two elastic clamping members may also be arranged in a non-centrosymmetrical manner.

[0064] In some embodiments of the present invention, the elastic clamping members may be provided in two, three, four or other numbers. Those skilled in the art may set the number of the elastic clamping members according to the required clamping force.

[0065] As described above, the flexible protective cover in the present invention not only has the basic protective function of preventing external pollutants from entering the adapter housing, but more importantly, in the present invention, it cooperates with other components to reduce noise.

[0066] In some more specific embodiments, Figure 8 As shown, the flexible protective cover as a whole can include a disc portion 22 arranged at the tail end, a port portion 24 arranged at the head end, and a conical portion 23 connected between the disc portion and the port portion. The flexible protective cover can be made of flexible material, such as rubber, and the elastic clamping part can be made of metal.

[0067] In addition, in some more specific embodiments, such as Figure 8 As shown, the central hole of the flexible protective cover 2 is a waist-shaped hole 27 (i.e., having a long axis and a short axis of unequal diameters), which allows the input rod to tilt and swing at a certain angle (e.g., a tilt and swing of plus or minus 3°) when being stepped on or reset, thereby further improving the user experience.

[0068] In some more specific embodiments, Fig. 9 and Figure 2 As shown, the elastic clamping members include: an end portion 211, which is built into the disc portion, and the end portion 211 has a pressure-bearing portion 2111 whose extension direction is basically parallel to the axial end surface of the disc portion 22, and the pressure-bearing portion 2111 is used to withstand pressure when the disc portion is squeezed by the protrusion and deforms inward; an inclined support leg 212, which is built into the conical portion 23; a clamping portion 213 for clamping the input rod 3, which is bent relative to the inclined support leg 212, and the clamping portion 213 is built into the port portion 24.

[0069] In addition, in some more specific embodiments, such as Figure 3 As shown, the retaining frame 4 is provided with the protrusion 41, so the rubber shock-absorbing block provided on the original retaining frame can be omitted. This improvement eliminates the sticking noise usually produced when the retaining frame is separated from the adapter housing.

[0070] In some more specific embodiments, Figure 3 As shown, at least two (for example, two) protrusions may be provided, which are arranged symmetrically in the circumferential direction with the axis of the cage 4 as the center of symmetry.

[0071] In some more specific embodiments, Fig.10As shown, a tapered portion 31 is provided on the outer circumferential surface of the input rod 3, and the tapered portion 31 is configured such that its outer diameter gradually decreases along the reset direction P2 (i.e., the first direction). The tapered portion is used to cooperate with the elastic clamping member, i.e., the elastic clamping member is clamped on the tapered portion, so that when the input rod 3 moves in the reset direction P2, the clamping force gradually increases, thereby further enhancing the "braking" effect on the input rod.

[0072] In some more specific embodiments, Fig.11 As shown, the first end of the adapter housing 1 has a connecting groove 13 extending in the circumferential direction, Figure 2 It can be seen that the rear end of the flexible protective cover is clamped in the connection groove 13, thereby achieving connection with the adapter housing.

[0073] In addition, if Figure 2 and Fig.11 As shown, in some more specific embodiments of the present invention, the first end of the adapter housing 1 also has a flange 14, and a flange groove 25 is correspondingly provided on the inner wall of the flexible protective cover 2, so that the flange 14 can be correspondingly clamped in the flange groove 25, thereby further realizing a stable connection between the adapter housing 1 and the flexible protective cover 2.

[0074] It can be seen that the braking force transmission structure described in the utility model has a simple structure and excellent noise reduction effect, and can make the pedal resetting process have damping, thereby further improving the user experience.

[0075] In another embodiment, the utility model further provides a braking system, which includes a pedal assembly, a brake assembly, and a braking force transmission structure as described above connected between the pedal assembly and the brake assembly. The braking system can effectively reduce the noise when the brake pedal is reset, thereby improving the user experience.

[0076] Since the present invention does not involve improvements to the pedal assembly and the brake assembly, the pedal assembly, the brake assembly and the braking process of the brake system will not be described in detail herein.

[0077] The present invention also provides a vehicle in another embodiment. The vehicle has a braking system as described above. The vehicle has less braking noise due to the adoption of the present invention.

[0078] It should be noted that the prior art part in the protection scope of the utility model is not limited to the embodiments given in the application documents. All prior art that does not contradict the scheme of the utility model, including but not limited to prior patent documents, prior public publications, prior public uses, etc., can be included in the protection scope of the utility model.

[0079] In addition, the combination of the various technical features in this case is not limited to the combination described in the claims of this case or the combination described in the specific embodiments. All technical features recorded in this case can be freely combined or combined in any way unless there is a contradiction between them.

[0080] It should also be noted that the above-listed embodiments are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made therewith are directly derived or easily associated with the contents disclosed by those skilled in the art from the present invention, and should all fall within the protection scope of the present invention.

Claims

1. A braking force transmission structure, which is used to connect between a pedal assembly and a brake assembly, characterized in that: The pedal braking force transmission structure comprises: An adapter housing (1) having a groove (11) formed on an end surface of a first end in an axial direction; A flexible protective cover (2) is arranged outside the adapter housing and connected to the first end of the adapter housing, wherein at least two elastic clamping members (21) are built into the flexible protective cover; An input rod (3), the head end of which is used to connect with the pedal assembly, and the tail end of which passes through the central hole of the flexible protective cover and the central hole of the adapter housing to connect with the brake assembly; A retainer (4) is arranged in the adapter housing and sleeved on the input rod so as to be able to move linearly synchronously with the input rod, and an axial end surface (42) of the retainer has a protrusion (41) protruding axially outward; When the input rod (3) moves in a first direction (P2), the protrusion (41) of the retaining frame extends from the groove (11) and presses the flexible protective cover (2), so that the elastic clamping member (21) of the flexible protective cover clamps the input rod to hinder the movement of the input rod in the first direction.

2. The braking force transmission structure according to claim 1, characterized in that: The at least two elastic clamping members (21) are arranged symmetrically in the circumferential direction with the axis of the flexible protective cover as the symmetry center.

3. The braking force transmission structure according to claim 1, characterized in that: The flexible protective cover comprises a disc portion (22) arranged at the rear end, a port portion (24) arranged at the head end, and a tapered portion (23) connected between the disc portion and the port portion.

4. The braking force transmission structure according to claim 3, characterized in that: Each of the elastic clamping members comprises: An end portion (211) built into the disc portion, the end portion having a pressure-bearing portion (2111) extending in a direction substantially parallel to an axial end surface of the disc portion; An inclined support foot (212) built into the tapered portion; A clamping portion (213) is bent relative to the inclined support leg, and the clamping portion is built into the port portion.

5. The braking force transmission structure according to claim 1, characterized in that: The central hole of the flexible protective cover is a waist-shaped hole (27).

6. The braking force transmission structure according to claim 1, characterized in that: A tapered portion (31) is provided on the outer circumferential surface of the input rod, and the outer diameter of the tapered portion gradually decreases along the first direction.

7. The braking force transmission structure according to claim 1, characterized in that: The first end of the adapter housing has a connecting groove (13) extending in the circumferential direction, and the rear end of the flexible protective cover is clamped in the connecting groove.

8. The braking force transmission structure according to claim 1, characterized in that: The first end of the adapter housing has a flange (14), and the inner wall of the flexible protective cover is provided with a flange groove (25), and the flange is correspondingly clamped in the flange groove.

9. The braking force transmission structure according to claim 1, characterized in that: At least two protrusions (41) are provided, and are arranged symmetrically in the circumferential direction with the axis of the retaining frame as the center of symmetry.

10. A braking system, characterized in that: It comprises a braking force transmission structure as claimed in any one of claims 1 to 9.

11. A vehicle, characterized in that: It comprises a braking system as claimed in claim 10 .

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