Detection device for pedal travel sensor

Abstract

The present invention discloses a detection device for a pedal stroke sensor, which is used to detect the measurement accuracy of the pedal stroke sensor. The detection device for the pedal stroke sensor comprises a frame, a first fixing member, a driving member and a second fixing member. The first fixing member is arranged on the frame and is used to fix and install a vehicle brake valve so that a push rod in the vehicle brake valve is movably installed on the frame. The driving member is used to drive the push rod to move on the frame and obtain the driving activity displacement value of the push rod on the frame. The second fixing member is arranged on the frame and is used to fix a pedal stroke sensor to be detected so that the pedal stroke sensor is used to detect the detection activity displacement value of the push rod on the frame, compare the detection activity displacement value with the driving activity displacement value, and judge the measurement accuracy of the pedal stroke sensor by whether the difference between the two obtained numerical values ​​is within a certain allowable error range, thereby ensuring the braking effect and safety of the vehicle and providing customers with a good use experience.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a detection device for a pedal stroke sensor. Background Art

[0002] With the development of automobile application technology, it is necessary to provide a continuously changing full-stroke signal during the braking process of the brake pedal. This places high demands on the design of the pedal stroke sensor. However, the measurement accuracy of the pedal stroke sensor cannot be guaranteed after installation. Therefore, when the car is in use, it may lead to poor braking effect of the car, thereby affecting the safety performance of the car. Summary of the invention

[0003] The main purpose of the present invention is to provide a detection device for a pedal travel sensor, aiming to solve the problem that the measurement accuracy of the pedal sensor cannot be guaranteed, which affects the braking effect and safety performance of the car.

[0004] To achieve the above object, the present invention proposes a detection device for a pedal stroke sensor, which is used to detect the measurement accuracy of the pedal stroke sensor. The detection device for the pedal stroke sensor includes:

[0005] frame;

[0006] A first fixing member is provided on the frame and is used to fix the vehicle brake valve so that the push rod in the vehicle brake valve can be movably installed on the frame;

[0007] a driving member, used for driving the push rod to move on the frame and obtaining a displacement value of the driving movement of the push rod on the frame; and

[0008] The second fixing member is arranged on the frame and is used to fix the pedal stroke sensor to be detected, so that the pedal stroke sensor is used to detect the detection activity displacement value of the push rod on the frame.

[0009] Optionally, the driving member includes a driving motor, a guide rail and a bearing part, the guide rail is extended in a direction toward the first fixing member, the bearing part is slidably installed on the guide rail and is transmission-connected to the push rod, and the driving motor is drivingly connected to the bearing part to drive the bearing part to slide along the extension direction of the guide rail to drive the push rod to move.

[0010] Optionally, the driving member further comprises a movable rod, the movable rod is arranged on a side of the bearing portion facing the first fixing member, and an end of the movable rod away from the bearing portion is used to connect with the push rod;

[0011] The first fixing member includes a fixing plate, which is arranged facing the bearing portion, and the side of the fixing plate facing away from the bearing portion is used to fix the vehicle brake valve, and the fixing plate is provided with a first through hole in the sliding direction of the bearing portion, and the first through hole is used for the movable rod to pass through the fixing plate so that the movable rod is connected to the push rod.

[0012] Optionally, the frame includes a base plate, a load-bearing platform and at least two support columns, the base plate extends in a horizontal direction, the lower end of each support column is connected to the base plate, the upper end of each support column is fixed to the load-bearing platform, the second fixing member is arranged on the upper side of the load-bearing platform, the base plate, the load-bearing platform and at least two support columns form a accommodating space, and the accommodating space is used to accommodate at least part of the vehicle brake valve.

[0013] Optionally, the fixing plate is further provided with a second through hole, which is spaced apart from the first through hole, and the second through hole is used for allowing the drive motor and the guide rail to pass through the fixing plate, so that the drive motor and part of the guide rail are located in the accommodating space.

[0014] Optionally, the second fixing member is a clamping type elbow clamp, which includes a first handle and a vertical clamp. The vertical clamp is arranged on the upper side of the supporting platform, and the first handle is drivingly connected to the vertical clamp to drive the vertical clamp to approach or move away from the pedal travel sensor.

[0015] Optionally, the drive motor is a DC motor.

[0016] Optionally, the detection device for the pedal travel sensor also includes a third fixing member and a transmission connection portion, and the transmission connection portion is movably arranged on the frame through the third fixing member, so that the transmission connection portion can be disconnected from the pedal travel sensor and transmit the detected activity displacement value to the display terminal when the transmission connection portion is connected to the pedal travel sensor.

[0017] Optionally, the transmission connection part includes a mounting part and at least one probe arranged on the mounting part, one end of each of the probes is used to be electrically connected to the pedal travel sensor, and the other end is used to be electrically connected to the display terminal, so as to transmit the detected activity displacement value to the display terminal through each of the probes.

[0018] Optionally, the third fixing member includes a push-pull elbow clamp, which includes a second handle and a horizontal clamp, the horizontal clamp is transmission-connected to the mounting portion, and the second handle is drivingly connected to the horizontal clamp to drive the horizontal clamp rod to move on the frame and drive each of the probes to move, so that each of the probes is connected or disconnected from the pedal travel sensor.

[0019] In the technical solution of the present invention, the first fixing member is provided to fix the vehicle brake valve, a driving member is provided to drive the push rod to move and obtain the driving activity displacement value, and the second fixing member is provided to fix the pedal stroke sensor so that the pedal stroke sensor obtains the detection activity displacement value, and by comparing the detection activity displacement value with the driving activity displacement value, if the difference between the two values ​​is within a certain allowable error range, it means that the accuracy of the pedal stroke sensor is high and will not affect the braking effect and safety of the car; if the difference between the two values ​​is not within a certain allowable error range, it means that the accuracy of the pedal stroke sensor is low and will affect the braking effect and safety of the car, that is, the pedal stroke sensor needs to be adjusted, so that the measurement accuracy of the pedal stroke sensor product can be determined through the detection of the detection device for the pedal stroke sensor, thereby ensuring the braking effect and safety of the car, and providing customers with a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 A three-dimensional schematic diagram of an embodiment of a detection device for a pedal travel sensor provided by the present invention;

[0022] Figure 2 A three-dimensional schematic diagram from another angle of an embodiment of a detection device for a pedal travel sensor provided by the present invention.

[0023] Description of Figure Numbers:

[0024]

[0025] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] With the development of automobile application technology, it is necessary to provide a continuously changing full-stroke signal during the braking process of the brake pedal. This places high demands on the design of the pedal stroke sensor. However, the measurement accuracy of the pedal stroke sensor cannot be guaranteed after installation. Therefore, when the car is in use, it may lead to poor braking effect of the car, thereby affecting the safety performance of the car.

[0030] In view of this, the present invention provides a detection device for a pedal stroke sensor. Figure 1 and Figure 2 For an embodiment of a detection device for a pedal travel sensor provided by the present invention, please refer to Figure 1The detection device 100 for the pedal stroke sensor is used to detect the measurement accuracy of the pedal stroke sensor 120. The detection device 100 for the pedal stroke sensor includes a frame 1, a first fixing member 2, a driving member 3 and a second fixing member 4. The first fixing member 2 is arranged on the frame 1 to fix and install a vehicle brake valve 110 so that a push rod in the vehicle brake valve 110 is movably installed on the frame 1. The driving member 3 is used to drive the push rod to move on the frame 1 and obtain the driving activity displacement value of the push rod on the frame 1. The second fixing member 4 is arranged on the frame 1 to fix the pedal stroke sensor 120 to be detected so that the pedal stroke sensor 120 is used to detect the detection activity displacement value of the push rod on the frame 1.

[0031] In the technical solution of the present invention, the first fixing member 2 is set to fix the vehicle brake valve 110, the driving member 3 is set to drive the push rod to move and obtain the driving activity displacement value, and then the pedal stroke sensor 120 is fixed on the vehicle brake valve 110 by setting the second fixing member 4, so that the pedal stroke sensor 120 obtains the detection activity displacement value, and the detection activity displacement value is compared with the driving activity displacement value. If the difference between the two values ​​is within a certain allowable error range, it means that the accuracy of the pedal stroke sensor 120 is high and will not affect the braking effect and safety of the car; if the difference between the two values ​​is not within a certain allowable error range, it means that the accuracy of the pedal stroke sensor 120 is low, which will affect the braking effect and safety of the car, that is, the pedal stroke sensor 120 needs to be adjusted, so the measurement accuracy of the pedal stroke sensor 120 product can be determined by the detection device 100 for the pedal stroke sensor, thereby ensuring the braking effect and safety of the car, and providing customers with a good user experience. Wherein, the certain allowable error range is set to ±0.01mm.

[0032] The measurement principle of the pedal travel sensor 120 is based on the design of the Hall sensor, and can record the magnetic force vector of the magnetic field. When the vehicle brake valve 110 is braked, the magnetic strip in the vehicle brake valve 110 moves, and the sensing element in the pedal travel sensor 120 detects the change in the magnetic force of the magnetic field. Then, by programming the sensor, the corresponding detection control unit of the pedal travel sensor 120 is parameterized, and the final value obtained is the detection activity displacement value. It should be noted that the detection device 100 for the pedal travel sensor can be applied to the accuracy detection of pedal travel sensors of various models and specifications. The pedal travel sensor 120 to be detected can be a PWG series pedal travel sensor or a FPP series pedal travel sensor. In one embodiment of the present invention, the pedal travel sensor 120 to be detected is an FPP110 pedal travel sensor.

[0033] When the driving member 3 controls a certain output to drive the push rod to move, the displacement of the magnetic strip in the vehicle brake valve 110 can be calculated according to the output, and the driving activity displacement value can be obtained. It should be noted that the form of the driving member 3 is not limited, as long as it can drive the push rod in the vehicle brake valve 110 to move on the frame 1, and the output of the driving member 3 can be controlled, and the driving activity displacement value can be obtained by calculating the output of the driving member 3. The driving member 3 can be a cylinder or a motor.

[0034] See also Figure 1 and Figure 2 In one embodiment of the present invention, the driving member 3 includes a driving motor 31, a guide rail 32 and a bearing portion 33. The guide rail 32 is extended in a direction toward the first fixing member 2. The bearing portion 33 is slidably installed on the guide rail 32 and is transmission-connected to the push rod. The driving motor 31 is drivingly connected to the bearing portion 33 to drive the bearing portion 33 to slide along the extension direction of the guide rail 32 to drive the push rod to move. In this way, by arranging the driving motor 31, the guide rail 32 and the bearing portion 33, the actual braking condition of the vehicle brake valve 110 can be simulated as much as possible, thereby ensuring the accuracy of the measurement accuracy of the pedal stroke sensor 120 detected by the detection device 100 for the pedal stroke sensor. In addition, the displacement value of the driving activity can be accurately calculated according to the output power of the driving motor 31, further ensuring the accuracy of the final detection result.

[0035] It should be noted that the form of the drive motor 31 is not limited. The drive motor 31 can be either an AC motor or a DC motor. Furthermore, in one embodiment of the present invention, the drive motor 31 is a DC motor. Since the AC motor has a large degree of magnetic field interference, the use of a DC motor can reduce the degree of magnetic field interference to the pedal travel sensor 120, thereby further improving the detection accuracy of the detection device 100 for the pedal travel sensor.

[0036] Furthermore, the driving member 3 further comprises a movable rod 34, the movable rod 34 being arranged on the side of the bearing portion 33 facing the first fixing member 2, and the end of the movable rod 34 away from the bearing portion 33 is used to connect the push rod; the first fixing member 2 comprises a fixing plate 21, the fixing plate 21 is arranged facing the bearing portion 33, the side of the fixing plate 21 facing away from the bearing portion 33 is used to fix and install the vehicle brake valve 110, the fixing plate 21 is provided with a first through hole in the sliding direction of the bearing portion 33, the first through hole is used for the movable rod 34 to pass through the fixing plate 21, so that the movable rod 34 is connected to the push rod. The movable rod 34 has a high-precision displacement stroke by being connected to the bearing portion 33, so that the push rod connected to the movable rod 34 also has a high-precision displacement stroke, thereby ensuring the accuracy of the calculated driving activity displacement value, thereby improving the detection accuracy of the detection device 100 for the pedal stroke sensor.

[0037] It should be noted that the connection method between the movable rod 34 and the bearing part 33, and the connection method between the movable rod 34 and the push rod are not limited, and can be screwed or clamped. In one embodiment of the present invention, the connection method between the movable rod 34 and the bearing part 33, and the connection method between the movable rod 34 and the push rod are both screwed.

[0038] It should be noted that the form of the rack 1 is not limited, and can be a physical body, such as a mounting plate, or a virtual body, that is, the first fixing member 2 and the second fixing member 4 can be directly arranged on the ground. Figure 1In an embodiment of a detection device 100 for a pedal travel sensor provided by the present invention, the frame 1 includes a base plate 11, a carrying platform 12 and at least two support columns 13, the base plate 11 is extended in a horizontal direction, the lower end of each support column 13 is connected to the base plate 11, the upper end of each support column 13 is fixed to the carrying platform 12, the second fixing member 4 is arranged on the upper side of the carrying platform 12, the base plate 11, the carrying platform 12 and at least two support columns 13 form an accommodating space, the accommodating space is used to accommodate at least part of the vehicle brake valve 110, the placement of the vehicle brake valve 110 makes full use of the accommodating space, realizes the miniaturized design of the detection device 100 for a pedal travel sensor, and reduces the overall occupied space of the detection device 100 for a pedal travel sensor.

[0039] It should be noted that the number of the support columns 13 is an even number, so that the load-bearing platform 12 is evenly stressed and the balance of the load-bearing platform 12 is ensured. The number of the support columns 13 can be 2, 4, or 6. Figure 1 In an embodiment of the detection device 100 for the pedal travel sensor provided by the present invention, the number of the support columns 13 is 4.

[0040] For further information, see Figure 2 The fixing plate 21 is further provided with a second through hole, and the second through hole is spaced apart from the first through hole. The second through hole is used for the drive motor 31 and the guide rail 32 to pass through the fixing plate 21, so that the drive motor 31 and part of the guide rail 32 are located in the accommodating space. Placing the drive motor 31 and part of the guide rail 32 in this way fully utilizes the accommodating space, further miniaturizing the detection device 100 for the pedal stroke sensor, and greatly reducing the overall space occupied by the detection device 100 for the pedal stroke sensor.

[0041] The form of the second fixing member 4 is not limited, as long as it can fix the pedal travel sensor 120 to be detected and enable the pedal travel sensor 120 to obtain the detection activity displacement value. The second fixing member 4 can be a bolt, or the second fixing member 4 can also be a buckle structure. For further information, please refer to Figure 1In an embodiment of the detection device 100 for a pedal stroke sensor provided by the present invention, the second fixing member 4 is a clamping elbow clamp 41, and the clamping elbow clamp 41 includes a first handle 411 and a vertical clamp 412. The vertical clamp 412 is arranged on the upper side of the carrying platform 12. The first handle 411 is drivingly connected to the vertical clamp 412 to drive the vertical clamp 412 to approach or move away from the pedal stroke sensor 120. When the detection device 100 for a pedal stroke sensor performs detection, the first handle 411 is controlled to drive the vertical clamp 412 to press the pedal stroke sensor 120 tightly against the vehicle brake valve 110, thereby fixing the pedal stroke sensor 120 on the upper side of the pedal stroke sensor 120. When the pedal stroke sensor 120 to be detected needs to be replaced, the first handle 411 is controlled to drive the vertical clamp 412 away from the pedal stroke sensor 120. This facilitates the replacement of the pedal stroke sensor 120 to be detected and improves the detection efficiency.

[0042] The detection device 100 for the pedal stroke sensor also includes a third fixing member 5 and a transmission connection part 6. The transmission connection part 6 is movably arranged on the frame 1 through the third fixing member 5, so that the transmission connection part 6 can be disconnected from the pedal stroke sensor 120 and electrically connected, and when the transmission connection part 6 is connected to the pedal stroke sensor 120, the detection activity displacement value is transmitted to the display terminal, so that the staff can obtain the detection activity displacement value through the display terminal, and then compare the detection activity displacement value with the driving activity displacement value to obtain the final detection result. In addition, through the setting of the third fixing member 5, the transmission connection part 6 can be electrically connected to the pedal stroke sensor 120 when the detection device 100 for the pedal stroke sensor is working, and the connection between the transmission connection part 6 and the pedal stroke sensor 120 can be disconnected when the detection device 100 for the pedal stroke sensor stops working, thereby realizing energy-saving design.

[0043] Furthermore, the transmission connection part 6 includes a mounting part 61 and at least one probe 62 arranged on the mounting part 61, one end of each of the probes 62 is used to be electrically connected to the pedal travel sensor 120, and the other end is used to be electrically connected to the display terminal, so as to transmit the detected activity displacement value to the display terminal through each of the probes 62.

[0044] It should be noted that the number of the probes 62 is not limited. The probes 62 may be one, two, or more, as long as the transmission strength of the electrical signal of the pedal travel sensor 120 is sufficient. Figure 1In an embodiment of the detection device 100 for a pedal travel sensor provided by the present invention, the number of the probes 62 is 6.

[0045] Furthermore, the third fixing member 5 includes a push-pull toggle clamp 51, and the push-pull toggle clamp 51 includes a second handle 511 and a horizontal clamp 512, the horizontal clamp 512 is transmission-connected to the mounting portion 61, and the second handle 511 is drivingly connected to the horizontal clamp 512 to drive the horizontal clamp 512 rod to move on the frame 1 and drive each of the probes 62 to move, so that each of the probes 62 is connected or disconnected with the pedal stroke sensor 120. When the detection device 100 for the pedal stroke sensor performs detection, the second handle 511 is controlled to drive the horizontal clamp 512 to drive each of the probes 62 to approach the The pedal stroke sensor 120 moves so that each of the probes 62 is electrically connected to the pin of the pedal stroke sensor 120, so that the detection result of the pedal stroke sensor 120 is transmitted to the display terminal. When the pedal stroke sensor 120 to be detected needs to be replaced or the detection device 100 for the pedal stroke sensor stops detecting, the second handle 511 is controlled to drive the horizontal clamp 512 to drive each of the probes 62 to move away from the pedal stroke sensor 120, thereby disconnecting the electrical connection between each of the probes 62 and the pedal stroke sensor 120, thereby realizing the energy-saving design of the detection device 100 for the pedal stroke sensor.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A detection device for a pedal stroke sensor, used to detect the measurement accuracy of the pedal stroke sensor, characterized in that: The detection device for the pedal travel sensor comprises: frame; A first fixing member is provided on the frame and is used to fix the vehicle brake valve so that the push rod in the vehicle brake valve is movably installed on the frame; A driving member, used for driving the push rod to move on the frame and obtaining a displacement value of the push rod on the frame, the driving member comprising a driving motor, a guide rail and a bearing part, the guide rail extending in a direction toward the first fixing member, the bearing part being slidably mounted on the guide rail and being drivingly connected to the push rod, the driving motor being drivingly connected to the bearing part to drive the bearing part to slide along an extension direction of the guide rail to drive the push rod to move; and, A second fixing member is provided on the frame and is used to fix the pedal stroke sensor to be detected, so that the pedal stroke sensor is used to detect the detection activity displacement value of the push rod on the frame; The third fixing member is arranged on the frame: The transmission connection part is movably arranged on the frame through the third fixing part, so that the transmission connection part can be disconnected from the pedal stroke sensor and electrically connected, and the detected activity displacement value is transmitted to the display terminal when the transmission connection part is connected to the pedal stroke sensor.

2. The detection device for a pedal travel sensor according to claim 1, characterized in that: The driving member further comprises a movable rod, which is arranged on a side of the bearing portion facing the first fixing member, and an end of the movable rod away from the bearing portion is used to connect with the push rod; The first fixing member includes a fixing plate, which is arranged facing the bearing portion, and the side of the fixing plate facing away from the bearing portion is used to fix the vehicle brake valve, and the fixing plate is provided with a first through hole in the sliding direction of the bearing portion, and the first through hole is used for the movable rod to pass through the fixing plate so that the movable rod is connected to the push rod.

3. The detection device for a pedal stroke sensor according to claim 2, characterized in that: The frame includes a base plate, a load-bearing platform and at least two support columns. The base plate is extended in a horizontal direction. The lower end of each support column is connected to the base plate, and the upper end of each support column is fixed to the load-bearing platform. The second fixing member is arranged on the upper side of the load-bearing platform. The base plate, the load-bearing platform and at least two support columns form a accommodating space, and the accommodating space is used to accommodate at least part of the vehicle brake valve.

4. The detection device for a pedal stroke sensor according to claim 3, characterized in that: The fixing plate is further provided with a second through hole, which is spaced apart from the first through hole. The second through hole is used for allowing the drive motor and the guide rail to pass through the fixing plate so that the drive motor and part of the guide rail are located in the accommodating space.

5. The detection device for a pedal stroke sensor according to claim 3, characterized in that: The second fixing member is a clamping type elbow clamp, which includes a first handle and a vertical clamp. The vertical clamp is arranged on the upper side of the supporting platform. The first handle is drivingly connected to the vertical clamp to drive the vertical clamp to approach or move away from the pedal travel sensor.

6. The detection device for a pedal travel sensor according to claim 1, characterized in that: The driving motor is a DC motor.

7. The detection device for a pedal stroke sensor according to claim 6, characterized in that: The transmission connection portion includes a mounting portion and at least one probe arranged on the mounting portion, one end of each of the probes is used to be electrically connected to the pedal travel sensor, and the other end is used to be electrically connected to the display terminal, so as to transmit the detected activity displacement value to the display terminal through each of the probes.

8. The detection device for a pedal stroke sensor according to claim 7, characterized in that: The third fixing member includes a push-pull toggle clamp, which includes a second handle and a horizontal clamp. The horizontal clamp is transmission-connected to the mounting portion, and the second handle is drivingly connected to the horizontal clamp to drive the horizontal clamp rod to move on the frame and drive each of the probes to move, so that each of the probes is connected or disconnected from the pedal travel sensor.

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