CN217374457U

CN217374457U - Pedal feel simulator and pedal assembly

Info

Publication number: CN217374457U
Application number: CN202122853072.9U
Authority: CN
Inventors: 张磊; 任立鹏; 李小康; 张竞争; 戴伟; 王奇; 李宏伟; 贾光欣; 邓霄荣
Original assignee: Qingzhi Automobile Technology Suzhou Co ltd
Current assignee: Qingzhi Automobile Technology Suzhou Co ltd
Priority date: 2021-11-21
Filing date: 2021-11-21
Publication date: 2022-09-06
Anticipated expiration: 2031-11-21

Abstract

The utility model provides a footboard sensation simulator and footboard subassembly. The pedal feel simulator includes a housing, a piston, a damping adjustment dial, a main spring, and a push rod. Wherein, a movable cavity is formed in the shell, and the piston is movably arranged in the movable cavity. The piston is provided with an air hole, a first space is formed between the first side of the piston and the movable cavity, a second space is formed between the second side of the piston and the movable cavity, and the shell is provided with a ventilation opening communicated with the first space. The damping adjusting disk is installed on the air hole in a one-way openable mode. A main spring is mounted in the second space for driving the piston towards its first side, a push rod is connected to the piston for driving the piston towards its second side, and a portion of the push rod protrudes from the first side of the housing. The utility model discloses a product structure is simpler, also more save material, compares in electron booster module in the past, and is more reliable.

Description

Pedal feel simulator and pedal assembly

Technical Field

The utility model relates to an automobile brake technical field particularly, relates to a footboard sensation simulator and footboard subassembly.

Background

At present, the pedal feel simulator part in the electric control brake booster is generally divided into: three schemes of presetting an unadjustable mode, presetting an adjustable mode and a pure feedback demodulation mode are adopted:

the preset non-adjustable type is generally made of a spring or a combined spring unit, and the structure is simple to manufacture and low in cost, so that the preset non-adjustable type is applied to most of decoupled brake master cylinder boosters. However, the preset spring type pedal simulator cannot provide good pedal feeling because the pedal feeling is nonlinear and complex, the universality is poor, different springs need to be replaced under different application conditions, and the development cost is undoubtedly increased.

The preset adjustable pedal simulator has the advantages of adjustable later damping and high universality, but the cost of the preset adjustable pedal simulator is far higher than that of a preset non-adjustable pedal simulator, and the market popularization is not facilitated.

The pure feedback regulation type simulator is generally combined with an electronic booster module to realize pedal feeling simulation, the mode structure and control are complex, better force theory pedal feeling is difficult to achieve, and the current market is lack of mature application.

From the foregoing, there is still a lack in the prior art of a low-cost and reliable pedal feel simulator for use in an electronically controlled brake booster.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a footboard sensation simulator and footboard subassembly to solve among the prior art and be used for the higher and unreliable technical problem of footboard sensation simulator cost among the decoupling type automotive electronics arresting gear.

In order to achieve the above object, according to one aspect of the present invention, there is provided a pedal feel simulator including: a shell, wherein a movable cavity is formed in the shell; the piston is movably arranged in the movable cavity, an air hole is formed in the piston, a first space is formed between the first side of the piston and the movable cavity, a second space is formed between the second side of the piston and the movable cavity, and a ventilation opening communicated with the first space is formed in the shell; the damping adjusting disc is installed on the air hole in a one-way openable mode, when the piston moves towards the second side of the piston, the damping adjusting disc opens the air hole, and air in the second space enters the first space through the air hole; when the piston moves towards the first side of the piston, the damping adjusting disc closes the air hole, and the air in the first space enters the second space through the damping adjusting disc; a main spring installed in the second space, the main spring for driving the piston toward the first side thereof; a push rod coupled to the piston for driving the piston toward the second side thereof, a portion of the push rod extending from the first side of the housing.

In one embodiment, the vent opening is located on a first side of the housing, and a portion of the pushrod protrudes through the vent opening.

In one embodiment, the push rod includes a connecting body connected to the piston and a first rod disposed on a first side of the connecting body, the first rod extending from the first side of the housing.

In one embodiment, the pushrod further comprises a second rod disposed on a second side of the connector, the second rod extending from the second side of the housing.

In one embodiment, a first sealing ring is disposed between the second rod and the housing.

In one embodiment, the piston is provided with a sliding groove, the connecting body is slidably arranged in the sliding groove, and the auxiliary spring is arranged between the connecting body and the piston.

In one embodiment, the second rod further passes through the piston.

In one embodiment, a second seal is mounted between the second rod and the piston.

In one embodiment, a third seal is mounted between the piston and the movable cavity.

According to another aspect of the present invention, there is provided a pedal assembly, comprising a pedal hinged to a base and a pedal feel simulator coupled to the pedal, wherein the pedal feel simulator is the pedal feel simulator described above.

By applying the technical scheme of the utility model, the part of the push rod extending out of the first side of the shell is pressed downwards, the push rod drives the piston to move towards the second side of the shell, the air hole is opened by the damping adjusting disc, the gas in the second space enters the first space through the air hole, and the pressing force overcomes the compression force of the main spring; when the push rod is released, the main spring drives the piston to move towards the first side of the piston, the damping adjusting disc closes the air hole, the second space is vacuumized, gas in the first space must enter the second space through the damping adjusting disc to cause damping force, at the moment, the characteristic that the gas flow slowly passes through the damping adjusting disc can be used, the atmospheric pressure difference is utilized to slow down the speed of the piston moving towards the first side of the piston, and therefore the foot feeling is simulated. Adopt the technical scheme of the utility model, realized the simulation of footboard sensation simulator hysteresis power through above-mentioned structure, compared in current product, the utility model discloses a product structure is simpler, and also more save material utilizes the size of adjusting the damping hole on the damping adjustment disk just can change the footboard and feel. The structure is a pure mechanical structure, and is more reliable compared with the traditional electronic booster module.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. In the drawings:

FIG. 1 shows a schematic structural view of an embodiment of a pedal feel simulator according to the present invention in a depressed state;

FIG. 2 shows a schematic structural view of an embodiment of the pedal feel simulator of FIG. 1 in a released state;

fig. 3 shows a schematic structural view of another embodiment of a pedal feel simulator according to the invention;

fig. 4 shows a schematic structural view of an embodiment of a pedal assembly according to the present invention.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Fig. 1 and 2 show an embodiment of the pedal feel simulator of the present invention, which includes a housing 10, a piston 20, a damping adjustment disk 30, a main spring 40, and a push rod 50. Wherein a movable cavity is formed in the housing 10, and the piston 20 is movably installed in the movable cavity. The piston 20 is provided with an air hole, a first space 11 is formed between the first side of the piston 20 and the movable cavity, a second space 12 is formed between the second side of the piston 20 and the movable cavity, and the shell 10 is provided with a ventilation opening communicated with the first space 11. The damping adjusting disk 30 is installed on the air hole in a one-way openable way, when the piston 20 moves towards the second side of the piston, the damping adjusting disk 30 opens the air hole, and the air in the second space 12 enters the first space 11 through the air hole; when the piston 20 moves towards its first side, the damping adjustment disk 30 closes the gas hole and the gas of the first space 11 enters the second space 12 through the damping adjustment disk 30. A main spring 40 is installed in the second space 12, the main spring 40 for driving the piston 20 toward a first side thereof, a push rod 50 connected to the piston 20 for driving the piston 20 toward a second side thereof, and a portion of the push rod 50 protruding from the first side of the housing 10.

By applying the technical scheme of the utility model, the part of the push rod 50 extending out from the first side of the shell 10 is pressed downwards, the push rod 50 drives the piston 20 to move towards the second side, the damping adjusting disc 30 opens the air hole, the air in the second space 12 enters the first space 11 through the air hole, and the pressing force overcomes the compression force of the main spring 40; when the push rod 50 is released, the main spring 40 drives the piston 20 to move towards the first side of the piston, the damping adjusting disc 30 closes the air hole, the second space 12 is vacuumized, air in the first space 11 must enter the second space 12 through the damping adjusting disc 30 to generate damping force, and the air flow can slowly pass through the damping adjusting disc 30, so that the speed of the piston 20 moving towards the first side of the piston is reduced by utilizing the atmospheric pressure difference, and the foot feeling is simulated. Adopt the technical scheme of the utility model, realized the simulation of footboard sensation simulator hysteresis power through above-mentioned structure, compared in current product, the utility model discloses a product structure is simpler, and also more save material utilizes the size of adjusting damping adjustment disk 30 and goes up the damping hole and just can change the footboard and feel. The structure is a pure mechanical structure, and is more reliable compared with the traditional electronic booster module.

As shown in fig. 1 and 2, in the solution of the present embodiment, the vent opening is located at the first side of the housing 10, and a portion of the push rod 50 protrudes through the vent opening. That is, the vent opening serves as an extension port of the push rod 50 and a vent hole through which the first space 11 communicates with the outside.

As another alternative, two openings may be formed in the housing 10, one of which serves as a ventilation opening and the other of which serves as an opening through which the push rod 50 protrudes from the housing 10.

As shown in fig. 1 and 2, in the present embodiment, the push rod 50 includes a connecting body 51 and a first rod 52 disposed on a first side of the connecting body 51, the connecting body 51 is connected to the piston 20, the first rod 52 extends from the first side of the casing 10, and the first rod 52 extending from the first side of the casing 10 is a control end of the pedal sensation simulator. More preferably, in the technical solution of the present embodiment, the push rod 50 further includes a second rod 53, the second rod 53 is disposed on a second side of the connecting body 51, and the second rod 53 extends from the second side of the casing 10. The second rod 53 extends from the second side of the housing 10, so that the entire push rod 50 can be mounted on the housing 10, and the operation of the push rod 50 is more stable. Preferably, a first sealing ring 61 is disposed between the second rod 53 and the casing 10, and the first sealing ring 61 can seal a gap between the second rod 53 and the casing 10, so as to prevent air from directly entering the second space 12 and damaging the relative sealing performance of the second space 12.

As shown in fig. 2, in the solution of the present embodiment, the second rod 53 further passes through the piston 20. More preferably, a second packing 62 is installed between the second rod 53 and the piston 20. The second sealing ring 62 can seal the gap between the second rod 53 and the piston 20, so as to prevent air from directly entering the second space 12 and damaging the relative tightness of the second space 12.

As an alternative embodiment, as shown in fig. 3, the second rod 53 may be eliminated, and no hole communicating with the second space 12 is formed in the housing 10.

More preferably, as shown in fig. 1 and 2, the piston 20 is provided with a sliding groove, the connecting body 51 is slidably mounted in the sliding groove, and the sub spring 80 is mounted between the connecting body 51 and the piston 20. The structure can provide more complex and changeable foot feeling for the pedal feeling simulator, and the use of a driver is more convenient. In addition, the original pedal feeling can be changed by changing the connecting body 51 to adapt to different requirements. The structure can provide more complex and changeable foot feeling for the pedal feeling simulator, and the use of a driver is more convenient. Alternatively, the secondary spring 80 may be replaced with a conical spring or a compound spring as desired.

As shown in fig. 1, in the solution of the present embodiment, it is more preferable that a third sealing ring 63 is installed between the piston 20 and the movable cavity, and a gap between the piston 20 and the movable cavity is formed by the third sealing ring 63, so as to ensure the relative sealing performance of the second space 12.

Alternatively, the first seal ring 61, the second seal ring 62 or the third seal ring 63 may be elastic seal rings.

As shown in fig. 4, the present invention further provides a pedal assembly, which includes a pedal plate 70 hinged to the base and a pedal feel simulator coupled to the pedal plate 70, wherein the pedal feel simulator is the pedal feel simulator. Adopt foretell footboard sensation simulator, realized the simulation of footboard sensation simulator hysteresis power, compared in current product, the utility model discloses a product structure is simpler, also more save material, and is more reliable.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the directional terms such as "front, back, upper, lower, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pedal feel simulator, comprising:

the device comprises a shell (10), wherein a movable cavity is formed in the shell (10);

the piston (20) is movably arranged in the movable cavity, an air hole is formed in the piston (20), a first space (11) is formed between the first side of the piston (20) and the movable cavity, a second space (12) is formed between the second side of the piston (20) and the movable cavity, and a ventilation opening communicated with the first space (11) is formed in the shell (10);

a damping adjustment disc (30) openably mounted on said gas hole in one direction, said damping adjustment disc (30) opening said gas hole through which gas of said second space (12) enters said first space (11) when said piston (20) moves towards its second side; when the piston (20) moves towards the first side of the piston, the damping adjusting disk (30) closes the air hole, and the gas in the first space (11) enters the second space (12) through the damping adjusting disk (30);

a main spring (40) mounted in the second space (12), the main spring (40) for driving the piston (20) towards a first side thereof;

a push rod (50) connected to the piston (20) for driving the piston (20) towards its second side, a portion of the push rod (50) protruding from the first side of the housing (10).

2. The pedal sensation simulator according to claim 1, wherein the ventilation opening is located on a first side of the housing (10), a portion of the push rod (50) protruding through the ventilation opening.

3. The pedal sensation simulator according to claim 1, wherein the push rod (50) comprises a connecting body (51) and a first rod (52) arranged on a first side of the connecting body (51), the connecting body (51) being connected to the piston (20), the first rod (52) protruding from the first side of the housing (10).

4. The pedal feel simulator according to claim 3, wherein said push rod (50) further comprises a second rod (53), said second rod (53) being disposed on a second side of said connecting body (51), said second rod (53) extending from said second side of said housing (10).

5. The pedal sensation simulator according to claim 4, characterized in that a first sealing ring (61) is provided between the second rod (53) and the housing (10).

6. The pedal feel simulator according to claim 4, wherein said piston (20) is provided with a sliding groove, said connecting body (51) is slidably mounted in said sliding groove, and a secondary spring (80) is mounted between said connecting body (51) and said piston (20).

7. The pedal feel simulator according to claim 6, wherein said second rod (53) also passes through said piston (20).

8. The pedal sensation simulator according to claim 7, characterized in that a second sealing ring (62) is mounted between the second rod (53) and the piston (20).

9. The pedal feel simulator according to claim 1, characterized in that a third sealing ring (63) is mounted between said piston (20) and said movable cavity.

10. A pedal assembly comprising a foot pedal (70) arranged in an articulated manner and a pedal feel simulator associated with said foot pedal (70), characterized in that said pedal feel simulator is as claimed in any one of claims 1 to 9.