Pressure sensing device simulating a vehicle brake pedal

Abstract

The embodiment of the present invention discloses a pressure sensing device simulating a vehicle brake pedal, comprising a pressure sensor fixed on an extension line of a travel path when the brake pedal is stepped on, a spring series body formed by at least two springs connected in series, and a limiter for limiting the amount of compression deformation of a portion of the springs in the spring series body, wherein the spring series body is arranged between the brake pedal and the pressure sensor, and the two ends of the spring series body respectively abut the brake pedal and the pressure sensor. The embodiment of the present invention can well simulate the travel change trend of a traditional brake pedal that is light at the front and tight at the back when braking, and provide a better user experience by arranging a spring series body formed by at least two springs connected in series between the brake pedal and the pressure sensor, the two ends of the spring series body respectively abut the brake pedal and the pressure sensor, and also arranging a limiter to limit the amount of compression deformation of a portion of the springs in the spring series body.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of vehicle simulation technology, and in particular to a pressure sensing device that simulates a vehicle brake pedal. Background Art

[0002] In simulated racing games, simulated driving teaching or simulated vehicle toys, the technical core of the simulated brake pedal is to use sensors to detect the travel changes of the brake pedal. Commonly used sensors include: 1. Potential linear sensor / angle sensor, which is the simplest pedal structure, and the change of linear sensor / angle sensor data is converted into the depth of the pedal position; 2. Hall sensor, which is essentially the same as the potentiometric linear / angle sensor in simulating the braking feeling of the vehicle, but its working principle is non-contact sensing, and it has the best life and reliability; 3. Pressure sensor, which reflects the travel changes of the brake pedal by detecting the pressure received; 4. Hydraulic sensor, which has a higher real braking feeling, but the structure is complex and relatively expensive.

[0003] When using the above-mentioned potential pure sensor / angle sensor, Hall sensor and pressure sensor, the simulated brake pedal can basically only reflect the active travel of the brake pedal in a single linear manner, which is not very consistent with the working state of the traditional brake pedal, which is loose at the front and tight at the back. Users cannot adapt immediately and cannot achieve a good simulation of the actual braking experience. Although the hydraulic sensor has better simulation performance, it has the defect of high cost. Moreover, the above-mentioned various simulated brake pedals still have the defect that users cannot selectively choose their own braking force and braking force style according to their preferences or game intensity. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a pressure sensing device for simulating a vehicle brake pedal, which can better simulate the change trend of the brake pedal travel.

[0005] To solve the above technical problems, an embodiment of the present invention adopts the following technical solution: a pressure sensing device simulating a vehicle brake pedal, comprising a pressure sensor fixed on an extension line of a travel path when the brake pedal is stepped on, a spring series body formed by at least two springs connected in series, and a limiter for limiting the compression deformation of a part of the springs in the spring series body, wherein the spring series body is arranged between the brake pedal and the pressure sensor and its two ends respectively abut against the brake pedal and the pressure sensor.

[0006] Furthermore, the pressure sensing device also includes a support rod, and each spring of the spring series body is a coil spring and is sleeved on the support rod.

[0007] Furthermore, each of the limit members corresponds to limiting the compression deformation of a spring, and the limit members include a first fixing seat and a second fixing seat respectively arranged at both ends of the spring with limited compression deformation to clamp the corresponding spring, and a stop block fixed on the first fixing seat and extending a predetermined length toward the second fixing seat to resist the second fixing seat when the spring is compressed to a predetermined length, and the length of the stop block is smaller than the length of the spring with limited compression deformation in the initial state.

[0008] Furthermore, the stop block is a single-piece gasket with a predetermined thickness or is formed by stacking a plurality of gaskets with a predetermined thickness.

[0009] Furthermore, a pressure block is sleeved on one end of the support rod close to the brake pedal, and one end of the spring series body close to the brake pedal is abutted against the brake pedal through the pressure block, and a slot for accommodating and positioning the pressure block is correspondingly provided on the brake pedal.

[0010] Furthermore, a gasket is provided between the pressing block and the spring series body.

[0011] Furthermore, the spring series body includes three springs connected in series, wherein a spring located in the middle cooperates with the limiting member and the compression deformation amount is limited by the limiting member.

[0012] Furthermore, the spring coefficients of the springs in the spring series are different.

[0013] Furthermore, an end of the support rod away from the brake pedal is provided with an axle rod arranged perpendicular to the support rod, and the support rod is pivotally connected to the support base of the brake pedal through the axle rod.

[0014] Furthermore, the pressure sensor is sleeved on the support rod and is located between the spring series body and the shaft rod, and the opposite end surfaces of the pressure sensor are pressed against the spring series body and the shaft rod through corresponding protective sheets.

[0015] By adopting the above technical scheme, the embodiment of the present invention has at least the following beneficial effects: the embodiment of the present invention arranges a spring series body formed by at least two springs connected in series between the brake pedal and the pressure sensor, and the two ends of the spring series body respectively abut the brake pedal and the pressure sensor, and a limiter is also arranged to limit the compression deformation of a part of the springs in the spring series body. When the user lightly steps on the brake pedal, each spring of the spring series body will be compressed and deformed. At this time, the stroke of the brake pedal is the sum of the deformations of each spring, and the stroke of the brake pedal increases at a larger growth rate according to the size of the pedaling force; and when the pedaling force reaches a certain value, those springs whose compression deformations are limited will not be further deformed even if they are subjected to greater pressure when the deformation has reached the limited value. At this time, when the user increases the pedaling force, the total deformation generated by the remaining springs is relatively reduced, which is manifested as the stroke of the brake pedal can only increase at a relatively small growth rate. Therefore, the stroke change trend of the traditional brake pedal, which is light at the front and tight at the back during braking, can be well simulated, and the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic structural diagram of an optional embodiment of the pressure sensing device for simulating a vehicle brake pedal according to the present invention.

[0017] Figure 2 The figure is an exploded schematic diagram of an optional embodiment of the pressure sensing device for simulating a vehicle brake pedal according to the present invention.

[0018] Figure 3 A cross-sectional view of an alternative embodiment of a pressure sensing device for simulating a vehicle brake pedal according to the present invention.

[0019] Figure 4 This is a schematic structural diagram of a pressure sensing device for simulating a vehicle brake pedal in an optional embodiment of the present invention, which cooperates with a brake pedal.

[0020] Figure 5 for Figure 4 Exploded schematic diagram of the structure shown. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] Please refer to Figure 1-Figure 4As shown, an optional embodiment of the present invention provides a pressure sensing device that simulates a vehicle brake pedal, including a pressure sensor 1 fixed on an extension line of a travel path when a brake pedal 4 is stepped on, a spring series body 2 formed by at least two springs 20 connected in series, and a limiter 3 for limiting the compression deformation amount of a portion of the springs 20 in the spring series body 2, wherein the spring series body 2 is arranged between the brake pedal 4 and the pressure sensor 1, and the two ends thereof respectively abut against the brake pedal 4 and the pressure sensor 1.

[0023] The embodiment of the present invention provides a spring series body 2 formed by at least two springs 20 connected in series between the brake pedal 4 and the pressure sensor 1, and the two ends of the spring series body 2 abut the brake pedal 4 and the pressure sensor 1 respectively. At the same time, a limiter 3 is provided to limit the compression deformation of a part of the springs 20 in the spring series body 2. When the user steps on the brake pedal 4 lightly, each spring 20 of the spring series body 2 will be compressed and deformed. At this time, the stroke of the brake pedal 4 is the sum of the deformations of each spring 20, and the stroke of the brake pedal 4 increases at a larger growth rate according to the size of the pedal force. When the pedal force reaches a certain value, those springs 20 with limited compression deformation will not be further deformed even if they are subjected to greater pressure when the deformation has reached the limited value. At this time, when the user increases the pedaling force, the total deformation generated by the remaining springs 20 is relatively reduced, which is manifested as the stroke of the brake pedal 4 can only increase at a relatively small growth rate. Therefore, the stroke change trend of the traditional brake pedal, which is light at the front and tight at the back during braking, can be well simulated, and the user experience is better.

[0024] In another optional embodiment of the present invention, the pressure sensing device further includes a support rod 7, and each spring 20 of the spring series body 2 is a coil spring and is sleeved on the support rod 7. In this embodiment, by further providing a support rod 7 and sleeved on the support rod 7 to form the spring series body 2, the spring can be well positioned to prevent the spring 20 from bending sideways and failing during the action.

[0025] In another optional embodiment of the present invention, each of the limit members 3 limits the compression deformation of a spring 20, and the limit member 3 includes a first fixing seat 30 and a second fixing seat 32 respectively arranged at both ends of the spring 20 with limited compression deformation to clamp the corresponding spring 20, and a stop block 34 fixed on the first fixing seat 30 and extending a predetermined length toward the second fixing seat 32 to resist the second fixing seat 32 when the spring 20 is compressed to a predetermined length, and the length of the stop block 34 is less than the length of the spring 20 with limited compression deformation in the initial state. In this embodiment, each limit member 3 limits the compression deformation of a spring 20, and specifically limits the limit member 3 to include the first fixing seat 30, the second fixing seat 32, and the stop block 34, so that when the spring 20 is compressed to a certain amount, the stop block 34 on the first fixing seat 30 resists the second fixing seat 32 so that the spring 20 cannot be further compressed, which plays a good limiting role.

[0026] In another optional embodiment of the present invention, the stopper 34 is a single washer with a predetermined thickness or is formed by stacking a plurality of washers with a predetermined thickness. Specifically, the number of washer layers can be increased or decreased according to actual needs to increase or decrease the travel of the spring 20 with a limited amount of compression deformation accordingly, so as to achieve a preload effect preferred by the user. Preferably, but not limited to, the washer is a flat washer, such as Figure 3 In the illustrated embodiment, the stopper 34 is formed by stacking a plurality of flat washers.

[0027] In another optional embodiment of the present invention, the end of the support rod 7 close to the brake pedal 4 is also sleeved with a pressure block 8, and the end of the spring series body 2 close to the brake pedal 4 is abutted against the brake pedal 4 through the pressure block 8, and the brake pedal 4 is correspondingly provided with a slot 9 for accommodating and positioning the pressure block 8. In this embodiment, the support rod 7 can be easily supported at the bottom of the brake pedal 4 by providing the pressure block 8 at one end of the support rod 7 to abut against the slot 9 on the brake pedal 4, and the pressure block 8 is sleeved on the support rod 7 and can move along the support rod 7. When disassembly is required, the pressure block 8 is pushed to withdraw from the slot 9, and the support rod 7 can be removed from under the brake pedal 4, and the disassembly operation is also very convenient.

[0028] In another optional embodiment of the present invention, a gasket 10 is provided between the pressing block 8 and the spring series body 2. In this embodiment, by providing the gasket 10 between the pressing block 8 and the spring series body 2, it can ensure that the pressing block 8 is subjected to a more balanced force.

[0029] In another optional embodiment of the present invention, the spring series body 2 includes three springs 20 connected in series, wherein the spring 20 in the middle cooperates with the limiter 3 and the compression deformation is limited by the limiter 3. In this embodiment, the spring series body 2 is formed by using three springs 20, and the limiter 3 is provided for the spring 20 in the middle, so the structure is relatively simple and symmetrical, and it is more convenient to assemble.

[0030] In another optional embodiment of the present invention, the spring coefficients of each spring 20 in the spring series 2 are different. In this embodiment, by using springs 20 with different spring coefficients, for example, springs 20 with a maximum elastic force corresponding to a standard compression amount equivalent to 10 kgf, 15 kgf, 20 kgf, and 30 kgf, the brake feedback force can be adjusted to better simulate the braking feeling of a real car, so as to achieve the desired pedal force feeling, and to prepare the braking force that the user is satisfied with, so as to achieve DIY customization.

[0031] In another optional embodiment of the present invention, combined with Figure 4 and Figure 5 As shown, the end of the support rod 7 away from the brake pedal 4 is provided with a shaft rod 11 arranged perpendicular to the support rod 7, and the support rod 7 is pivotally connected to the support base 12 of the brake pedal 4 through the shaft rod 11. In this embodiment, by pivoting the support rod 7 to the support base 12 by means of the shaft rod 11 arranged at one end, it can be ensured that the pressure sensing device can swing freely forward and backward around the shaft rod 11 to cater to the movement of the brake pedal 4 within the pedal stroke. At the same time, when the spring 20 needs to be replaced, it is only necessary to withdraw the pressing block 8 at one end of the support rod 7 from the card slot 9, so that the entire pressure sensing device can swing freely forward and backward around the shaft rod 11 and rotate out of the narrow space below the brake pedal 4, so that the user can replace the spring 20 with different stiffness coefficients according to needs.

[0032] In another optional embodiment of the present invention, the pressure sensor 1 is sleeved on the support rod 7 and is between the spring series body 2 and the shaft rod 11, and the opposite end surfaces of the pressure sensor 1 are respectively pressed against the spring series body 2 and the shaft rod 11 through corresponding protective sheets 13. In this embodiment, protective sheets 13 are respectively provided on the opposite end surfaces of the pressure sensor 1 to abut against the spring series body 2 and the shaft rod 11, which does not affect the force detection of the pressure sensor 1, and can also well protect the pressure sensor 1 and extend its service life.

[0033] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation on the present invention.

[0034] 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.

[0035] 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.

[0036] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A pressure sensing device simulating a vehicle brake pedal, characterized in that: The pressure sensing device includes a pressure sensor fixed on the extension line of the travel path when the brake pedal is stepped on, a spring series body formed by at least two springs in series, and a limiter for limiting the compression deformation of a part of the springs in the spring series body. The spring series body is arranged between the brake pedal and the pressure sensor and its two ends respectively abut the brake pedal and the pressure sensor. Each of the limiters corresponds to limiting the compression deformation of a spring. The limiter includes a first fixed seat and a second fixed seat respectively arranged at both ends of the spring with limited compression deformation and clamping the corresponding spring, and a stop block fixed on the first fixed seat and extending a predetermined length toward the second fixed seat and abutting the second fixed seat when the spring is compressed to the predetermined length. The length of the stop block is less than the length of the spring with limited compression deformation in the initial state.

2. The pressure sensing device for simulating a vehicle brake pedal according to claim 1, characterized in that: The pressure sensing device further comprises a support rod, and each spring of the spring series body is a coil spring and is sleeved on the support rod.

3. The pressure sensing device for simulating a vehicle brake pedal according to claim 1 or 2, characterized in that: The stopper block is a single-piece gasket with a predetermined thickness or is formed by stacking a plurality of gaskets with a predetermined thickness.

4. The pressure sensing device for simulating a vehicle brake pedal according to claim 2, characterized in that: The end of the support rod close to the brake pedal is also sleeved with a pressure block, and the end of the spring series body close to the brake pedal is abutted against the brake pedal through the pressure block, and the brake pedal is correspondingly provided with a slot for accommodating and positioning the pressure block.

5. The pressure sensing device for simulating a vehicle brake pedal according to claim 4, characterized in that: A gasket is arranged between the pressing block and the spring series body.

6. The pressure sensing device for simulating a vehicle brake pedal according to claim 1, characterized in that: The spring series body includes three springs connected in series, wherein a spring located in the middle cooperates with the limiting member and the compression deformation amount is limited by the limiting member.

7. The pressure sensing device for simulating a vehicle brake pedal according to claim 1 or 6, characterized in that: The spring coefficients of the springs in the spring series are different.

8. The pressure sensing device for simulating a vehicle brake pedal according to claim 2, characterized in that: An end of the support rod away from the brake pedal is provided with an axle rod which is arranged perpendicular to the support rod, and the support rod is pivotally connected to the support base of the brake pedal through the axle rod.

9. The pressure sensing device for simulating a vehicle brake pedal according to claim 8, characterized in that: The pressure sensor is sleeved on the support rod and is between the spring series body and the shaft rod, and the opposite end surfaces of the pressure sensor are pressed against the spring series body and the shaft rod through corresponding protective sheets.

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