Side support sensing structure of two-wheeled vehicle

Abstract

The utility model relates to a two-wheeled vehicle temple sensing structure which is installed on a vehicle body and comprises a temple fixing plate serving as an installation reference, the temple fixing plate is rotationally connected with a temple foot and fixedly provided with a pressure sensor, and a buffering device is arranged on the stress face of the pressure sensor. The temple leg hits the buffer device when swinging, and the buffer device is used for reducing the slope of a pressure-resistance curve of the pressure sensor. The pressure sensor is installed on the side wall of the temple fixing plate and located on the swing path of the temple foot. The buffering device is used for obtaining a smooth resistance value curve, the state of the temple foot can be accurately judged, and then the riding intention of a vehicle is judged.

Description

Technical Field

[0001] The utility model relates to the technical field of two-wheeled vehicle state determination, in particular to a side support sensing structure of a two-wheeled vehicle. Background Art

[0002] With the development and widespread use of two-wheeled vehicles, riding safety issues have been taken seriously by the majority of users. Sometimes users are impatient and forget to put away the side stand when riding, which may cause bumps and collisions on the road and pose a safety hazard. At this time, a side stand detection device is needed to remind users to put away the side stand.

[0003] In addition, with the popularity of smart phones, more and more users want to travel without keys. Users hope to unlock and lock the car with just a mobile phone, and even further, to lock the car without feeling. Even if the user forgets to lock the car, the car can automatically make a judgment. When the user performs certain specific operations and the car detects that the user intends to stop riding, it can automatically lock the car, eliminating the operation of taking out the key to lock the car, which requires a set of behavior judgment devices. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a rationally structured two-wheeled vehicle side stand sensing structure, which can accurately determine whether the side stand leg is kicked up; and utilizes buffer components to obtain a gentle resistance curve, thereby optimizing the measurement results of the sensor.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A two-wheeled vehicle side stand sensing structure is installed on the vehicle body and comprises a side stand fixing plate as a mounting reference, a side stand foot is rotatably connected to the side stand fixing plate, a pressure sensor is fixedly installed on the side stand fixing plate, and a buffer component is arranged on the force-bearing surface of the pressure sensor; when the side stand foot swings, it hits the buffer component,

[0007] The buffer device is used to reduce the slope of the pressure-resistance curve of the pressure sensor.

[0008] The pressure sensor is installed on the side wall of the temple fixing plate and is located in the swing path of the temple foot.

[0009] A resistance device is arranged on the side of the pressure sensor facing away from the buffer component, and the resistance device is fixedly connected to the side support fixing plate.

[0010] The resistance device is a rigid member perpendicular to the side wall on which it is located and has a horizontal mounting surface for mounting the pressure sensor.

[0011] The buffer device comprises:

[0012] The buffer part is arranged near the side support fixing plate.

[0013] The fixed end is located on the side of the buffer away from the side support fixing plate.

[0014] The thickness of the buffer portion is greater than the thickness of the fixed end.

[0015] The pressure sensor is installed between the buffer part and the resistance device.

[0016] The side support legs are in surface contact with the buffer portion.

[0017] During the swinging process of the side support leg, the middle section thereof contacts the buffer part.

[0018] The pressure sensor transmits signals to the vehicle via a signal line.

[0019] The slope of the actual pressure-resistance curve of the pressure sensor is less than 1.

[0020] The beneficial effects of the utility model are as follows:

[0021] The utility model uses the principle that a pressure sensor senses the size of pressure to determine whether the side support leg is completely retracted. In conventional solutions, if a sensor is used, pressure is usually applied directly to the sensor. The curve of the sensor output resistance under force in this conventional usage is a straight line with a slope of 1. In the utility model, a buffer device is added to the sensor, and the buffer device can slowly release the instantaneous force generated when the side support leg hits the sensor. This slow release effect is reflected in the curve, and the resistance curve of the conventional sensor can be changed into a gentle curve with a smaller slope. After setting a threshold on this curve, since the part of the curve after the threshold point has the characteristics of a small slope, monotonically increasing, and gentle, when the side support leg acts on the sensor during long-term use, the actual resistance value output each time is similar. Compared with the threshold, these similar resistance values ​​have obvious and relatively stable differences. In this way, the judgment result of the side support leg state is clear and reliable by judging the difference between the threshold and the actual output resistance value.

[0022] In addition, compared with the conventional solution which also uses a combination of magnets and Hall sensors, the pressure sensor of the utility model does not have the safety risk caused by the loss of consumables, and has the advantages of waterproof function and cost saving by using only two signal lines.

[0023] The utility model does not require an additional chip, which is convenient for maintenance. The pressure sensor can be installed at the folded position of the side leg, or at the raised position of the side leg. In theory, it is only necessary to set a sensor at any extreme position of the movement of the side leg. By sensing the corresponding state of the side leg, it is possible to determine what riding intention the vehicle is in at this time. For example, if the sensor is used to sense the state of the folded side leg, then the vehicle's intention to park is determined. If the folded side leg is not sensed, it is determined that the vehicle has the intention to ride. If the sensor is used to sense the state of the kicked-up side leg, then the vehicle's intention to ride is determined. If the folded side leg is not sensed, it is determined that the vehicle has the intention to park. This supplements and improves the method for determining whether the user has stopped riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the parked state of the side support legs in one embodiment of the present utility model.

[0025] Figure 2 This is a schematic diagram of a side support leg folded up state in one embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the parked state of the side support legs in another embodiment of the present invention.

[0027] Figure 4 The utility model is a schematic diagram of an optional installation structure of the buffer component.

[0028] Figure 5 for Figure 4 Schematic diagram of the force deformation of the buffer component.

[0029] Figure 6 It is a comparison diagram of pressure-resistance curves of a conventional sensor and a sensor with a buffer device of the present invention. The blue straight line in the figure is the conventional sensor, and the green curve is the sensor with a buffer device.

[0030] Wherein: 1. side support fixing plate; 2. side support foot; 3. resistance device; 4. pressure sensor; 5. buffer component; 501. buffer part; 502. fixed end. DETAILED DESCRIPTION

[0031] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0032] like Figure 1-Figure 6 As shown, a two-wheeled vehicle side support sensing structure is installed on the vehicle body, including a side support fixing plate 1 as a mounting reference, a side support leg 2 is rotatably connected to the side support fixing plate 1, and a pressure sensor 4 is fixedly installed. A buffer component 5 is arranged on the force-bearing surface of the pressure sensor 4; when the side support leg 2 swings, it hits the buffer component 5.

[0033] The buffer device 5 is used to reduce the slope of the pressure-resistance curve of the pressure sensor 4 .

[0034] The pressure sensor 4 is installed on the side wall of the side support fixing plate 1 and is located on the swing path of the side support leg 2.

[0035] A resistance device 3 is provided on the side of the pressure sensor 4 facing away from the buffer component 5 , and the resistance device 3 is fixedly connected to the side support fixing plate 1 .

[0036] The resistance device 3 is a rigid member perpendicular to the side wall on which it is located and has a horizontal mounting surface for mounting the pressure sensor 4 .

[0037] The buffer device 5 comprises:

[0038] The buffer portion 501 is disposed close to the temple fixing plate 1.

[0039] The fixed end 502 is located at the side of the buffer portion 501 away from the temple fixing plate 1.

[0040] The thickness of the buffer portion 501 is greater than the thickness of the fixing end 502 .

[0041] The pressure sensor 4 is installed between the buffer portion 501 and the resistance device 3 .

[0042] The side support leg 2 is in surface contact with the buffer portion 501 .

[0043] During the swinging process of the side support leg 2 , the middle position thereof contacts the buffer portion 501 .

[0044] The pressure sensor 4 transmits signals to the vehicle via a signal line.

[0045] The slope of the actual pressure-resistance curve of the pressure sensor 4 is less than 1.

[0046] The specific structure, design and working principle of the utility model are as follows:

[0047] like Figure 1 As shown, the installation reference of the side support structure is the side support fixing plate 1, to which a spring is connected via a spring clip, and a side support foot 2 is also connected via a fixing bolt, and the spring is connected to the side support foot 2; a resistance device 3 is provided on the side of the side support fixing plate 1, and the resistance device 3 is used as a force reference.

[0048] The resistance device 3 may be an integrally formed part, or an independent rigid part connected to the side support fixing plate 1 by welding.

[0049] like Figure 1As shown, a pressure sensor 4 is arranged on the side of the resistance device 3 facing the side support leg 2, and a buffer component 5 is arranged on the pressure sensor 4. The function of the buffer component 5 is to make the pressure-resistance curve of the ordinary sensor with a slope of 1 flatter. Therefore, in theory, any material or device with elastic deformation ability can be used as the buffer component 5. Figure 4 and Figure 5 As shown, a specific structure for installing the buffer component 5 is provided as an example. Fixed ends 502 are set on both sides of the buffer component 5. At this time, the buffer component 5 is in an initial state without force, in contact with the pressure sensor 4, and a deformation space is reserved between the buffer component 5 and the mounting surface of the resistance device 3. When subjected to force, the buffer component 5 deforms, compresses the deformation space, and releases the external force to act on the pressure sensor 4, so that the pressure-resistance curve of the pressure sensor 4 is as follows Figure 6 The green gentle curve in the graph.

[0050] like Figure 1 and Figure 2 An embodiment shown, and Figure 3 In another embodiment shown, the pressure sensor 4 can be installed at the retracted position of the side support leg 2, or at the raised position of the side support leg 2. In theory, it is only necessary to set a sensor at any one of the movement limit positions of the side support leg 2, and by sensing the corresponding state of the side support leg 2, it is possible to determine what riding intention the vehicle is in at this time. For example, if the sensor is used to sense the state of the side support leg 2 being retracted, then the vehicle's parking intention is determined. If the side support leg 2 is not sensed to be retracted, then the vehicle is determined to have a riding intention; if the sensor is used to sense the state of the side support leg 2 being kicked up, then the vehicle's riding intention is determined. If the side support leg 2 is not sensed to be retracted, then the vehicle is determined to have a parking intention.

[0051] The pressure sensor 4 can be a resistance strain gauge or other small-volume pressure sensor 4, and the buffer component 5 can be rubber or other wear-resistant components with buffering effect to prevent the side support leg 2 from directly hitting the pressure sensor 4 and causing damage. The buffer component 5 can be replaced later. If it is worn, other buffer materials can be glued to the buffer component 5, which will not have much impact on the overall effect.

[0052] The following explanation is given using a resistance strain gauge as the pressure sensor 4 .

[0053] The resistance strain gauge is connected to two signal lines, and the microcomputer device determines the magnitude of the pressure on the resistance device 3 by detecting the resistance value of the device connected to the two signal lines. Taking the resistance strain gauge as an example, the resistance calculation formula is: R = ρL / A, where R is the strain gauge resistance, ρ is the resistivity of the strain gauge material, L is the strain gauge length, and A is the cross-sectional area of ​​the strain gauge.

[0054] When the buffer device is not under pressure from the side support leg 2, the resistance value of the resistance strain gauge is the initial value. When the buffer device is under pressure from the side support leg 2, the resistance strain gauge connected to it will receive the buffer pressure. At this time, L will increase, making the resistance value larger. At this time, the greater the pressure, the greater the resistance. In order to accurately determine the event of the side support being retracted, data can be collected in the laboratory environment to measure the pressure-resistance change curve of the device.

[0055] Select the kickstand of the specified model for testing. Fix the resistance device 3 at the selected position and do not change it. Under different ambient temperatures, test the pressure caused by the side support leg 2 on the resistance device 3 after it is folded. The pressure is replaced by the resistance value. The two are positively correlated. The greater the pressure, the greater the resistance. They are a functional relationship (according to the above formula R=ρL / A, which is a monotonically increasing linear function). The pressure is judged according to the resistance, and the folded state is indirectly judged.

[0056] Select 100 side support legs 2 for testing, and test the resistance change on the pressure sensor 4 when the side support is retracted under the environment of -30° to 80° (select the sensor working temperature). Record the resistance value of the pressure sensor 4 after the state is stable, and record the minimum resistance value A0 and the maximum resistance value B0.

[0057] 100 buffer devices were subjected to wear treatment and the above test was repeated to test the resistance changes of 10 wear levels and record the minimum value A. 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , A 8 , A 9 , A 10 , record the maximum value B 1 , B 2 , B 3 , B 4 , B 5 , B 6 , B 7 , B 8 , B 9 , B 10 .

[0058] Filter out the minimum and maximum values ​​of all values, and set the minimum value to A x , the maximum value is B x , their positions in the entire resistance change curve are as follows Figure 6 As shown. You can see A x With B xVery close, this is one of the design purposes, similar A x With B x The difference between the resistance value and the support judgment threshold is obvious, which makes it easier to distinguish the side support state. The following will mention how to determine the threshold.

[0059] At this point, it can be determined that the sensing structure can reliably determine the stress conditions.

[0060] The sensing structure provided by the present invention can accurately reflect the state of the side support, and the state that needs to be reflected in the end is: continuously reading the resistance value of the pressure sensor 4 within a unit time, and judging whether the resistance value within the time period is always greater than the judgment threshold, to judge whether the side support leg 2 is in a reliable retracted state.

[0061] The theoretical basis of the above judgment method is that the side support leg 2 will apply three different pressures to the pressure sensor 4 during the swinging process.

[0062] When the side support leg 2 has not yet contacted the buffer component 5, the pressure sensor 4 has an initial pressure value caused by installation and tightening;

[0063] When the side support leg 2 just contacts the buffer component 5, the pressure increases instantly;

[0064] When the side support leg 2 is tightened by the spring, the buffer device is deformed at the same time to absorb and distribute the pressure. At this time, the pressure on the pressure sensor 4 is reduced.

[0065] In the above pressure change process, the buffer component 5 plays a key role. In order to reflect the role of the buffer component 5, two sensor structures with and without the buffer component 5 are installed on the temple fixing plate 1 for comparison.

[0066] like Figure 6 As shown in the figure, when the buffer device 5 is not installed, the resistance curve tends to be a straight line, and the resistance output by the pressure sensor 4 tends to increase linearly, which can easily touch the safety line of the pressure sensor 4. In the structure with the buffer device 5, after the resistance curve increases at the moment of pressure, the deformation of the buffer device relieves the pressure acting on the pressure sensor 4, which is reflected in the curve as the second half of the resistance value changes rapidly and slowly, and the safety line of the pressure sensor 4 is not easily touched, so that the pressure sensor 4 is not easily damaged, that is, it is not easy to reach the upper limit of the range.

[0067] Without this buffer device, A x With B x The difference is too big, A x Very low, B xIf the buffer device is attached to the support device, and the pressure sensor 4 is placed in the middle to a certain extent, even if the spring on the foot support is deformed and aged, even if the temperature is affected, as long as the side support is retracted, the retraction pressure has a certain span, but the resistance value does not vary much, so that the resistance value is obviously different from the retraction judgment threshold, which is convenient for distinguishing the state of the side support and improving the judgment stability and compatibility of the product.

[0068] After obtaining the above pressure-resistance curve, set the judgment threshold at a reasonable position on the curve. The setting of the threshold determines the stability of the device. If the threshold is designed too low, the sensor will be triggered by mistake. If the threshold is designed too high, it may overlap with Ax, causing the sensor not to be triggered.

[0069] The utility model sets the judgment threshold on the resistance curve, at a position between the resistance corresponding to the pressure just received by the side support leg 2 and the resistance corresponding to the tightening pressure of the side support leg 2 .

[0070] In the resistance acquisition circuit of the resistance strain gauge, a microcomputer such as an MCU unit can determine whether the side support is retracted by continuously collecting the resistance value of the resistance strain gauge at a frequency of up to thousands of times per second.

[0071] Assume that the support judgment threshold is 0 x When collecting resistance values, numerical filtering is required. When the microcomputer collects resistance values ​​exceeding 0 x When the resistance value read for 50ms is greater than 0 x , the temple is considered to be retracted, otherwise it is considered to be not retracted. The duration of the collected signal is recommended to be more than 10ms.

[0072] The utility model adds a pressure sensor 4 with a buffer device 5 to the side support fixing plate 1, and can accurately judge the state of the side support leg 2 by collecting resistance data per unit time and comparing it with the judgment threshold. The pressure-resistance curve of the pressure sensor 4 of the utility model is a relatively gentle curve in the second half, and the measurement of the pressure sensor 4 is more accurate compared with the conventional linear curve.

[0073] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A two-wheeled vehicle side support sensing structure, mounted on the vehicle body, characterized in that: The invention comprises a side support fixing plate (1) serving as a mounting reference, a side support leg (2) being rotatably connected to the side support fixing plate (1), and a pressure sensor (4) being fixedly mounted thereon, and a buffer component (5) being arranged on the force-bearing surface of the pressure sensor (4); when the side support leg (2) swings, it hits the buffer component (5), The buffer device (5) is used to reduce the slope of the pressure-resistance curve of the pressure sensor (4).

2. The two-wheeled vehicle side support sensing structure according to claim 1, characterized in that: The pressure sensor (4) is installed on the side wall of the side support fixing plate (1) and is located at any extreme position on the swing path of the side support foot (2).

3. The two-wheeled vehicle side support sensing structure according to claim 2, characterized in that: A resistance device (3) is provided on the side of the pressure sensor (4) facing away from the buffer component (5), and the resistance device (3) is fixedly connected to the side support fixing plate (1).

4. The two-wheeled vehicle side support sensing structure as claimed in claim 3, characterized in that: The resistance device (3) is a rigid member perpendicular to the side wall where it is located, and has a horizontal mounting surface for mounting the pressure sensor (4).

5. The two-wheeled vehicle side support sensing structure according to claim 1, characterized in that: The buffer device (5) comprises: The buffer portion (501) is disposed close to the temple fixing plate (1). The fixed end (502) is located on the side of the buffer portion (501) away from the temple fixing plate (1). The thickness of the buffer portion (501) is greater than the thickness of the fixed end (502).

6. The two-wheeled vehicle side support sensing structure according to claim 5, characterized in that: The pressure sensor (4) is installed between the buffer part (501) and the resistance device (3).

7. The two-wheeled vehicle side support sensing structure according to claim 5, characterized in that: The side support leg (2) is in surface contact with the buffer portion (501).

8. The two-wheeled vehicle side support sensing structure according to claim 7, characterized in that: During the swinging process of the side support leg (2), the middle position of the side support leg (2) contacts the buffer portion (501).

9. The two-wheeled vehicle side support sensing structure according to claim 1, characterized in that: The pressure sensor (4) transmits a signal to the vehicle via a signal line.

10. The two-wheeled vehicle side support sensing structure according to claim 1, characterized in that: The slope of the actual pressure-resistance curve of the pressure sensor (4) is less than 1.

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