CN102721502A - Electric vehicle window closing force tester - Google Patents

Abstract

An electric window closing force tester, which is composed of two parts: the electrical structure part and the mechanical structure part; the force sensor is conveniently fixed on the window glass through the mechanical structure part, and is fixed on the car window glass when the window rises The force sensor generates a force signal due to pressure, and the signal line of the force sensor is connected to the AD conversion pin of the main chip of the electrical structure part, and the electrical structure part processes the AD sampling results and displays them in real time through the liquid crystal display circuit; The invention shows the force value in real time, is intuitive, portable, easy to install, and simple in structure. It has good practical value and broad application prospects in the technical field of automobile body safety testing instruments.

Description

An electric window closing force tester

technical field

The invention relates to an electric vehicle window closing force tester, in particular to a portable electric vehicle window closing force tester which can be directly installed on the window glass, and belongs to the technical field of automobile body safety testing instruments.

Background technique

The present invention adopts the definition of closing force in the Automobile Electric Window Regulator of the People's Republic of China Automobile Industry Standard. When the window glass of the car is raised, a force is applied in the opposite direction of operation to cause the motor to stall. At this time, the force of the lifter on the blocked object is the closing force. For the newly emerging anti-pinch window, foreign standards are formulated earlier than domestic ones. Regarding the closing force, there are two relevant international regulations that can be followed. One is the European regulation Directive2000/4/EC formulated in 2000, and the other is One is the US regulation FMVSS118 formulated in 2006, in which both regulations on the size of the closing force are stipulated to be less than 100N.

However, there is currently no device specially used to detect the closing force of the car window on the market. Some dynamometers that can be used for car window detection are also handheld liquid crystal display devices with external sensors, but the distance between the sensor and the window glass The installation method has not been elaborated. The present invention designs a mechanical structure that is easy to install. The sensor can be easily installed on the window glass, and the sensor signal is transmitted to the single-chip microcomputer, and the window closing force is displayed in real time through the liquid crystal display. size.

Contents of the invention

The invention discloses an electric vehicle window closing force tester, in particular to an electric vehicle window closing force tester which can be carried around, can be directly installed on the window glass, and can display the closing force in real time.

The scheme that the present invention realizes above-mentioned purpose is:

An electric vehicle window closing force tester, which consists of two parts: the electrical structure part and the mechanical structure part; the relationship between them is: the force sensor is conveniently fixed on the window glass through the mechanical structure part, and when the car window rises, it is fixed on the The force sensor on the window glass generates a force signal due to pressure, and the signal line of the force sensor is connected to the AD conversion pin of the main chip of the electrical structure part. The electrical structure part processes the AD sampling results and displays them in real time through the liquid crystal display circuit. display.

The electrical structural part includes main chip, power supply circuit and liquid crystal display three parts; the positional connection relationship between them is: the power supply circuit converts the external 12v power supply voltage into 5v voltage and connects it to the power supply pin of the main chip, and the power supply pin of the main chip The ordinary I/O port is connected to the LCD screen, and the LCD screen is driven to display the force value change in real time. The main chip is an ordinary 51 single-chip microcomputer with timer, I/O, and AD conversion. The ordinary IO port is mainly used to drive the LCD screen and connect the key switch; the force sensor force signal line is connected to the AD pin of the main chip. After that, the result will be displayed and output on the LCD screen; the power supply circuit is a power supply circuit using a voltage regulator chip, which is a three-terminal voltage regulator integrated circuit, its input terminal is connected to an external power supply, and its output terminal is 5v, which is connected to the power supply pin of the main chip , the ground terminal is grounded, its main function is to stabilize the external power supply voltage at 5v, and protect the main chip from the influence of external power supply voltage fluctuations; the LCD is a character image type liquid crystal display module, integrated LCD display and LCD control module ST7920, built-in 8192 Chinese characters, 128 characters and 64X256 dot matrix display RAM, directly connected to the main chip.

The mechanical structure part includes a glass clamp (1), a lower rod (2), an upper rod (3), an upper rod fork (4), a lower rod fork (10), a glass support tray (5), Upper rod sensor fixing screw (8), lower rod sensor fixing screw (11), upper and lower rod connecting pins (6), glass clamp fixing screw (7), force sensor (9), upper rod sensor fixing pin (12), Lower rod sensor retaining pin (13), glass clamp retaining nut (16) and rubber pad (14). Its position connection relationship is: the glass clamp (1) is installed on the vehicle window glass (15), a rubber pad (14) is installed between the glass clamp (1) and the vehicle window glass (15), and the glass clamp (1) The glass clamp fastening screw (7) is installed, the glass clamp fastening screw (7) is a standard part of M8, the glass clamp fastening nut (16) is installed on the glass clamp fastening screw (7), the glass clamp fastening nut (16) is the standard part of M8. One end of the upper rod (3) is connected to the glass clip (1), the other end is connected to the upper rod fork (4), and the upper rod (3) and the lower rod (2) are hinged through the upper and lower rod connecting pins (6) Together, one end of the lower rod (2) is connected to the glass support tray (5) and the other end is connected to the lower rod fork (10), where the upper rod fork (4) and the lower rod fork (10 ) is connected with a force sensor (9), and the force sensor (9) is connected with the upper rod fork (4) through the upper rod sensor fixing screw (8), and the upper end of the upper rod sensor fixing screw (8) is connected to the upper rod The fork (4) is connected together by the upper rod sensor fixing pin (12), the force sensor (9) and the lower rod fork (10) are connected together by the lower rod sensor fixing screw (11), and the lower rod sensor is fixed The upper end of the pin (11) is connected together with the lower rod fork (10) by the lower rod sensor fixing pin (13).

The shape of the glass clip (1) is shown in Figure 1(a) and Figure 1(b). The fixing groove is provided with two through holes for fixing. Since the glass clip is made of metal, it cannot directly contact the window glass (15). A rubber pad is added between the two. The function of the glass clip is to hold the An electric window closing force tester invented is conveniently fixed on the window glass (15);

The lower rod (2) is formed by connecting a round bar and a rectangular block with a groove, and its shape is shown in Figure 2 (a) and Figure 2 (b). The through holes on the rectangular block with a groove in the middle are mainly used for Install the connecting pin (6) of the upper and lower rods, so as to hinge the upper rod (3) and the lower rod (2) together, one end of the lower rod (2) is connected to the glass support tray (5), and the other end is connected to the fork of the lower rod (10) The function of the upper and lower rods is to transfer the force received by the glass support tray (5) to the force sensor (9) through the principle of leverage through cooperation with the upper rod;

The upper rod (3) is connected by a round bar and a rectangular block with a groove, the shape is shown in Figure 3 (a) and Figure 3 (b), and the through hole on the rectangular block with a groove in the middle is mainly used for Install the connecting pins of the upper and lower rods to hinge the upper rod and the lower rod together. One end of the upper rod is connected to the glass clip (1), and the other end is connected to the fork of the upper rod (4). The function of the upper rod is to connect with the The cooperation of the lower rod transfers the force received by the glass clamp (1) to the force sensor (9) through the principle of leverage;

The shape of the upper rod fork (4) is a cuboid with a U-shaped notch, as shown in Figure 4 (a) and Figure 4 (b), an upper rod is connected between the through holes on both sides of the upper rod fork The rod sensor fixing pin (12), the upper rod sensor fixing screw (8) is connected on the upper rod sensor fixing pin (12), the upper rod fork (4) is connected with the upper rod (3), and the upper rod fork The function of the shaped part (4) is to fix the upper end of the force sensor (9) through the upper rod sensor fixing screw (8) connected with the upper rod sensor fixing pin (12);

The glass support tray (5) is a cuboid iron sheet, the shape is shown in Figure 5 (a) and Figure 5 (b), and it is connected to the end of the lower rod (2). The function of the glass support tray (5) is to During the rising process of the car window, if an obstacle is encountered halfway, a force will be exerted on the glass support tray (5), and the glass support tray (5) will have a downward displacement when it is under pressure, so it is different from the lower rod ( 2) The lower rod fork (10) connected to the other end will press the sensor (9) upwards, thereby realizing the process of transferring the force received by the glass support tray (5) to the force sensor (9);

The upper and lower rod connecting pins (6) have a shape as shown in Figure 6. The head is a nut-shaped hexahedron, the upper half is a smooth cylindrical rod, the lower half is a screw thread, and the cylindrical rod part passes through the upper rod (3 ) and the through hole of the slotted rectangular block of the lower rod (2), the threaded part is mainly used for installing nuts to fix the upper rod (3) and the lower rod (2). The function of the upper and lower rod connecting pins (6) is to hinge the upper rod (3) and the lower rod (2) together, so that the lower rod (2) can rotate relative to the upper rod (3) without hindrance;

The fastening screw (7) is a standard connector that can be purchased on demand. In order to enable the glass clamp (1) to clamp the window glass (15), the distance between the installation center of the fastening screw and the uppermost end of the glass clamp (1) is about Equal to 1/2 of the height of the glass clamp, so the function of the fastening screw (7) is to enable the glass clamp (1) to clamp the window glass (15);

The upper rod sensor fixing screw (8) has a shape as shown in Figure 7(a) and Figure 7(b), and there is a through hole on the screw cap, and the function of the through hole is to pass through the upper rod sensor fixing pin (12) , hang on the upper rod fork (4), the threaded part of the lower end is connected to the self-threaded hole of the force sensor (9), the function of the upper rod sensor fixing screw (8) is to fix the upper end of the force sensor (9);

The force sensor (9) is a commercially available item selected on demand;

The lower rod fork (10) has the same shape as the upper rod fork, and the lower rod sensor fixing pin (13) is connected between the through holes on both sides of the lower rod fork, and the lower rod sensor fixing pin (13) is connected There is the lower rod sensor fixing screw (11), the lower rod fork (10) is connected with the lower rod (2), and the function of the lower rod fork (10) is to connect with the lower rod sensor fixing pin (13) The lower rod sensor fixing screw (11) fixes the lower end of the force sensor (9);

The lower rod sensor fixing screw (11) has the same shape as the upper rod sensor fixing screw (8). There is a through hole on the screw cap. The function of the through hole is to pass through the lower rod sensor fixing pin (13) and hang on the lower rod fork. On the shaped piece (10), the threaded part of its lower end is connected to the self-threaded hole of the force sensor (9), and the function of the lower rod sensor fixing screw (11) is to fix the lower end of the force sensor (9);

The upper rod sensor fixing pin (12) is a standard connector that can be purchased on demand, and its function is to connect the upper rod sensor fixing screw (8) to the upper rod fork (4);

The lower rod sensor fixing pin (13) is a standard connector that can be purchased on demand, and its function is to connect the lower rod sensor fixing screw (11) to the lower rod fork (10);

In the present invention, the rubber pad (14) is directly cut from a commercially available 2mm thick antistatic rubber to the same size as the glass clamp, and then directly placed between the window glass (15) and the glass clamp (1), The function of the rubber pad (14) is to prevent the window glass (15) from being scratched;

The glass clamp fastening nut (16) is a standard connecting piece selected on demand, and matches with the fastening screw (7).

Among them, the model of the microcontroller is STC12C48S2.

Wherein, the model of the power supply circuit regulator chip is LM7805.

Among them, the model of the liquid crystal display is HY-12864T-201.

Wherein, the model of the force sensor is CFBLSM.

Wherein, the width of the U-shaped fixing groove of the glass clip is 7-9mm.

Working principle of the present invention is:

The force sensor (9) is installed between the upper rod fork (4) and the lower rod fork (10) that are connected together with the lower rod (2) and the upper rod (3) respectively, and the force sensor (9) and The upper rod fork (4) is connected together by the upper rod sensor fixing screw (8), and the upper end of the upper rod sensor fixing screw (8) is connected with the upper rod fork (4) through the upper rod sensor fixing pin (12) Together, the force sensor (9) and the lower rod fork (10) are connected together through the lower rod sensor fixing screw (11), and the upper end of the lower rod sensor fixing screw (11) is connected to the lower rod fork (10) through The downrod sensor pins (13) are connected together.

Since the upper rod (3) is connected with the glass clip (1), the end connected with the upper rod (3) and the glass clip (1) can be relatively stationary relative to the window glass (15) during the raising process of the window. Install the force sensor (9) between the upper rod fork (4) and the lower rod fork (10), the upper rod fork (4) and the upper rod (3), the lower rod fork (10 ) and the lower rod (2), while the upper rod (3) and the lower rod (2) are hinged together through the upper and lower rod connecting pins (6), and the other end of the lower rod (2) is connected to the glass support tray (5) Connected together, so when the window glass (15) rises to the top with the glass clip (1) and acts on the glass support tray (5) forcefully, the lower bar (2) connected together with the glass support tray (5) ) moves downward, so the end of the upper rod (3) connected with the upper rod fork (4) moves upward, so the force sensor (9) is under pressure, and the sensor signal line (17) is connected to the main chip AD Conversion pin, the main chip analyzes and processes the AD conversion result and displays it in real time on the LCD screen.

In addition, the relationship between the force F1 acting on the glass support tray (5) and the force F2 output by the force sensor (9) is:

F1*a=F2*b

Where a is the distance between the position where the window is pushed onto the glass support tray (5) and the center of the upper and lower rod connecting pins (6), b is the distance between the center of the upper and lower rod connecting pins (6) and the center of the upper rod sensor fixing pin (8) distance.

Advantage and positive effect of the present invention are:

(1) Real-time display of force value, intuitive, portable and easy to install;

(2) Since the size of the force sensor is generally large, the closing force of the window is transferred to the sensor through the principle of leverage, and the closing force at a distance of 25mm from the upper frame of the window can be easily measured;

(3) Can be used as test equipment for automobile manufacturers.

Description of drawings

Figure 1(a) is the front view of the glass clamp, and Figure 1(b) is the left view of the glass clamp;

Figure 2(a) is the front view of the lower rod, and Figure 2(b) is the top view of the lower rod;

Figure 3(a) is the front view of the upper pole, and Figure 3(b) is the top view of the upper pole;

Figure 4(a) is the front view of the upper rod fork, and Figure 4(b) is the top view of the upper rod fork;

Figure 5(a) is the front view of the glass support tray, and Figure 5(b) is the left view of the glass support tray;

Fig. 6 is the connecting pin of upper and lower rods;

Figure 7(a) is the front view of the fixing screw of the upper rod sensor, and Figure 7(b) is the left view of the fixing screw of the upper rod sensor;

Fig. 8 is the structural representation of tester of the present invention;

Figure 9 is a schematic diagram of the electrical principle of the tester.

The symbols in the accompanying drawings are explained as follows:

1 is the glass clamp, 2 is the lower rod, 3 is the upper rod, 4 is the fork of the upper rod, 5 is the glass support tray, 6 is the connecting pin of the upper and lower rods, 7 is the fastening screw, 8 is the fixing screw of the upper rod sensor, 9 is the force sensor, 10 is the fork of the lower rod, 11 is the fixing screw of the lower rod sensor, 12 is the fixing pin of the upper rod sensor, 13 is the fixing pin of the lower rod sensor, 14 is the rubber pad, 15 is the window glass, 16 is Glass clip fastening nut, 17 is the sensor signal line;

a is the distance between the position where the window is pushed onto the glass support tray (5) and the center of the upper and lower rod connecting pins (6);

b is the distance between the center of the connecting pin (6) of the upper and lower rods and the center of the fixing pin (8) of the upper rod sensor.

Detailed ways

The invention relates to an electric vehicle window closing force tester, specifically referring to an electric vehicle window closing force tester which can be carried around, can be directly installed on the window glass, and can display the closing force in real time.

The scheme that the present invention realizes above-mentioned purpose is:

An electric vehicle window closing force tester, which consists of two parts: the electrical structure part and the mechanical structure part; the relationship between them is: the force sensor is conveniently fixed on the window glass through the mechanical structure part, and when the car window rises, it is fixed on the The force sensor on the window glass generates a force signal due to pressure, and the signal line of the force sensor is connected to the AD conversion pin of the main chip of the electrical structure part. The electrical structure part processes the AD sampling results and displays them in real time through the liquid crystal display circuit. display. Fig. 8 is a schematic structural diagram of the tester of the present invention; Fig. 9 is a structural diagram of the electrical principle of the tester.

The electrical structural part includes main chip, power supply circuit and liquid crystal display three parts; the positional connection relationship between them is: the power supply circuit converts the external 12v power supply voltage into 5v voltage and connects it to the power supply pin of the main chip, and the power supply pin of the main chip The ordinary I/O port is connected to the LCD screen, and the LCD screen is driven to display the force value change in real time. The main chip is an ordinary 51 single-chip microcomputer with timer, I/O, and AD conversion. In this project, STC12C48S2 is used. The ordinary IO port is mainly used to drive the LCD screen and connect the key switch; the force sensor force signal line is connected to To the AD pin of the main chip, after processing, the result will be displayed and output on the LCD screen; the power circuit is a power circuit using the LM7805 voltage regulator chip, and the LM7805 is a three-terminal voltage regulator integrated circuit. It is 5v, connected to the power supply pin of the main chip, and the ground terminal is grounded. Its main function is to stabilize the external power supply voltage at 5v and protect the main chip from the fluctuation of the external power supply voltage; the LCD screen is HY-12864T-201, It belongs to character image type liquid crystal display module, integrates LCD display screen and LCD control module ST7920, built-in 8192 Chinese characters, 128 characters and 64X256 dot matrix display RAM, directly connected to the main chip.

The mechanical structure part includes a glass clamp (1), a lower rod (2), an upper rod (3), an upper rod fork (4), a lower rod fork (10), a glass support tray (5), Upper rod sensor fixing screw (8), lower rod sensor fixing screw (11), upper and lower rod connecting pins (6), glass clamp fixing screw (7), force sensor (9), upper rod sensor fixing pin (12), Lower rod sensor retaining pin (13), glass clamp retaining nut (16) and rubber pad (14). Its position connection relationship is: the glass clamp (1) is installed on the vehicle window glass (15), a rubber pad (14) is installed between the glass clamp (1) and the vehicle window glass (15), and the glass clamp (1) The glass clamp fastening screw (7) is installed, the glass clamp fastening screw (7) is a standard part of M8, the glass clamp fastening nut (16) is installed on the glass clamp fastening screw (7), the glass clamp fastening nut (16) is the standard part of M8. One end of the upper rod (3) is connected to the glass clip (1), the other end is connected to the upper rod fork (4), and the upper rod (3) and the lower rod (2) are hinged through the upper and lower rod connecting pins (6) Together, one end of the lower rod (2) is connected to the glass support tray (5) and the other end is connected to the lower rod fork (10), where the upper rod fork (4) and the lower rod fork (10 ) is connected with a force sensor (9), and the force sensor (9) is connected with the upper rod fork (4) through the upper rod sensor fixing screw (8), and the upper end of the upper rod sensor fixing screw (8) is connected to the upper rod The fork (4) is connected together by the upper rod sensor fixing pin (12), the force sensor (9) and the lower rod fork (10) are connected together by the lower rod sensor fixing screw (11), and the lower rod sensor is fixed The upper end of the pin (11) is connected together with the lower rod fork (10) by the lower rod sensor fixing pin (13).

The shape of the glass clip (1) is shown in Figure 1(a) and Figure 1(b). There are two fixed through-holes on it. Since the glass clamp is made of metal, it cannot directly contact the window glass (15). A rubber pad is added between the two. The function of the glass clamp is to An electric vehicle window closing force tester of the present invention is conveniently fixed on the vehicle window glass (15);

The lower rod (2) is formed by connecting a round bar and a rectangular block with a groove, and its shape is shown in Figure 2 (a) and Figure 2 (b). The through holes on the rectangular block with a groove in the middle are mainly used for Install the connecting pin (6) of the upper and lower rods, so as to hinge the upper rod (3) and the lower rod (2) together, one end of the lower rod (2) is connected to the glass support tray (5), and the other end is connected to the fork of the lower rod (10) The function of the upper and lower rods is to transfer the force received by the glass support tray (5) to the force sensor (9) through the principle of leverage through cooperation with the upper rod;

The upper rod (3) is connected by a round bar and a rectangular block with a groove, the shape is shown in Figure 3 (a) and Figure 3 (b), and the through hole on the rectangular block with a groove in the middle is mainly used for Install the connecting pins of the upper and lower rods to hinge the upper rod and the lower rod together. One end of the upper rod is connected to the glass clip (1), and the other end is connected to the fork of the upper rod (4). The function of the upper rod is to connect with the The cooperation of the lower rod transfers the force received by the glass clamp (1) to the force sensor (9) through the principle of leverage;

The shape of the upper rod fork (4) is shown in Figure 4 (a) and Figure 4 (b), and the upper rod sensor fixing pin (12) is connected between the through holes on both sides of the upper rod fork, The rod sensor fixing pin (12) is connected with the upper rod sensor fixing screw (8), the upper rod fork (4) is connected with the upper rod (3), and the function of the upper rod fork (4) is to The upper rod sensor fixing screw (8) connected to the upper rod sensor fixing pin (12) fixes the upper end of the force sensor (9);

The glass support tray (5) is a cuboid iron sheet, the shape is shown in Figure 5 (a) and Figure 5 (b), and it is connected to the end of the lower rod (2). The function of the glass support tray (5) is to When the window is rising, if there is an obstacle in the middle, a force will be exerted on the glass support tray (5). When the glass support tray (5) is under pressure, it will have a downward displacement. (2) The lower rod fork (10) connected to the other end will press the sensor (9) upward, thereby realizing the process of transferring the force received by the glass support tray (5) to the force sensor (9);

The upper and lower rod connecting pins (6) have a shape as shown in Figure 6. The head is a nut-shaped hexahedron, the upper half is a smooth cylindrical rod, the lower half is a screw thread, and the cylindrical rod part passes through the upper rod (3 ) and the through hole of the slotted rectangular block of the lower rod (2), the threaded part is mainly used for installing nuts to fix the upper rod (3) and the lower rod (2). The function of the upper and lower rod connecting pins (6) is to hinge the upper rod (3) and the lower rod (2) together, so that the lower rod (2) can rotate relative to the upper rod (3) without hindrance;

The fastening screw (7) is a standard connector that can be purchased on demand. In order to enable the glass clamp (1) to clamp the window glass (15), the distance between the installation center of the fastening screw and the uppermost end of the glass clamp (1) is about Equal to 1/2 of the height of the glass clamp, so the function of the fastening screw (7) is to enable the glass clamp (1) to clamp the window glass (15);

The upper rod sensor fixing screw (8) has a shape as shown in Figure 7(a) and Figure 7(b), and there is a through hole on the screw cap, and the function of the through hole is to pass through the upper rod sensor fixing pin (12) , hang on the upper rod fork (4), the threaded part of the lower end is connected to the self-threaded hole of the force sensor (9), the function of the upper rod sensor fixing screw (8) is to fix the upper end of the force sensor (9);

This force sensor (9) is a commercially available part that can be purchased on demand, and its model is CFBLSM.

The lower rod fork (10) has the same shape as the upper rod fork, and the lower rod sensor fixing pin (13) is connected between the through holes on both sides of the lower rod fork, and the lower rod sensor fixing pin (13) is connected There is the lower rod sensor fixing screw (11), the lower rod fork (10) is connected with the lower rod (2), and the function of the lower rod fork (10) is to connect with the lower rod sensor fixing pin (13) The lower rod sensor fixing screw (11) fixes the lower end of the force sensor (9);

The lower rod sensor fixing screw (11) has the same shape as the upper rod sensor fixing screw (8). There is a through hole on the screw cap. The function of the through hole is to pass through the lower rod sensor fixing pin (13) and hang on the lower rod fork. On the shaped piece (10), the threaded part of its lower end is connected to the self-threaded hole of the force sensor (9), and the function of the lower rod sensor fixing screw (11) is to fix the lower end of the force sensor (9);

The upper rod sensor fixing pin (12) is a standard connector that can be purchased on demand, and its function is to connect the upper rod sensor fixing screw (8) to the upper rod fork (4);

The lower rod sensor fixing pin (13) is a standard connector that can be purchased on demand, and its function is to connect the lower rod sensor fixing screw (11) to the lower rod fork (10);

In the present invention, the rubber pad (14) is directly cut from a commercially available 2mm thick antistatic rubber to the same size as the glass clamp, and then directly placed between the window glass (15) and the glass clamp (1), The function of the rubber pad (14) is to prevent the window glass (15) from being scratched;

The glass clamp fastening nut (16) is a standard connecting piece selected on demand, and matches with the fastening screw (7).

Working principle of the present invention is:

The force sensor (9) is installed between the upper rod fork (4) and the lower rod fork (10) that are connected together with the lower rod (2) and the upper rod (3) respectively, and the force sensor (9) and The upper rod fork (4) is connected together by the upper rod sensor fixing screw (8), and the upper end of the upper rod sensor fixing screw (8) is connected with the upper rod fork (4) through the upper rod sensor fixing pin (12) Together, the force sensor (9) and the lower rod fork (10) are connected together through the lower rod sensor fixing screw (11), and the upper end of the lower rod sensor fixing screw (11) is connected to the lower rod fork (10) through The downrod sensor pins (13) are connected together.

Since the upper rod (3) is connected with the glass clip (1), the end connected with the upper rod (3) and the glass clip (1) can be relatively stationary relative to the window glass (15) during the raising process of the window. Install the force sensor (9) between the upper rod fork (4) and the lower rod fork (10), the upper rod fork (4) and the upper rod (3), the lower rod fork (10 ) and the lower rod (2), while the upper rod (3) and the lower rod (2) are hinged together through the upper and lower rod connecting pins (6), and the other end of the lower rod (2) is connected to the glass support tray (5) Connected together, so when the window glass (15) rises to the top with the glass clip (1) and acts on the glass support tray (5) forcefully, the lower bar (2) connected together with the glass support tray (5) ) moves downward, so the end of the upper rod (3) connected with the upper rod fork (4) moves upward, so the force sensor (9) is under pressure, and the sensor signal line (17) is connected to the main chip AD Conversion pin, the main chip analyzes and processes the AD conversion result and displays it in real time on the LCD screen.

In addition, the relationship between the force F1 acting on the glass support tray (5) and the force F2 output by the force sensor (9) is:

F1*a=F2*b

Where a is the distance between the position where the window is pushed onto the glass support tray (5) and the center of the upper and lower rod connecting pins (6), b is the distance between the center of the upper and lower rod connecting pins (6) and the center of the upper rod sensor fixing pin (8) distance.

Claims (6)

1. a power windows is closed force tester, it is characterized in that: it is made up of electrical structure part and physical construction part two parts; Force transducer is fixed on the glass for vehicle window through the physical construction part easily; When vehicle window rises; Be fixed on the force transducer on the glass for vehicle window and produce force signal because be under pressure; And the signal wire of force transducer is connected to the AD conversion pin of the master chip of electrical structure part, and the electrical structure part handles afterwards the AD sampled result through real-time the showing of liquid crystal display circuit;

Said electrical structure part comprises master chip, power circuit and liquid crystal display three parts; Power circuit converts external 12v supply voltage into power pin that 5v voltage is connected to master chip, and the common I/O mouth of master chip connects liquid crystal display, and driving liquid crystal is shielded real-time demonstration power value and changed; This master chip is to have timer, I/O, and common 51 single-chip microcomputers of AD conversion, common IO mouth are used for the driving liquid crystal screen, connect keyswitch; Force transducer force signal line is connected to master chip AD pin, through after handling the result is shown output through LCDs; This power circuit is the power circuit that adopts the voltage stabilizing chip; It is a circuit of three-terminal voltage-stabilizing integrated, its input termination external power supply, and output terminal is 5v; Connect the power pin of master chip; Earth terminal ground connection, its function are that external power supply voltage is stabilized in 5v, and the protection master chip does not receive the influence of external power supply voltage fluctuation; This LCDs is to belong to character picture type LCD MODULE, integrated LCD display screen and LCD control module ST7920, and built-in 8192 Chinese characters, 128 characters and 64X256 dot matrix display random access memory directly connect master chip;

Said physical construction part comprises glass folder (1), lower beam (2), upper boom (3), upper boom Y-piece (4), lower beam Y-piece (10), glass support pallet (5), upper boom sensor gib screw (8), lower beam sensor gib screw (11), goes up lower beam connecting pin (6), the solid screw (7) of glass clamping, force transducer (9), upper boom sensor fixing pin (12), lower beam sensor fixing pin (13), the solid nut (16) of glass clamping and rubber blanket (14); Glass folder (1) is installed on the glass for vehicle window (15); Between glass folder (1) and glass for vehicle window (15), rubber blanket (14) is housed; Glass is installed on the glass folder (1) clamps solid screw (7); Glass clamps solid nut (16) and is installed on the solid screw (7) of glass clamping; One end of upper boom (3) is connected on the glass folder (1); The other end is connected on the upper boom Y-piece (4), and upper boom (3) is hinged through last lower beam connecting pin (6) with lower beam (2), and an end of lower beam (2) is connected on the glass support pallet (5); The other end is connected on the lower beam Y-piece (10); Between upper boom Y-piece (4) and lower beam Y-piece (10), be connected with force transducer (9), force transducer (9) links together through upper boom sensor gib screw (8) with upper boom Y-piece (4), and the upper end of upper boom sensor gib screw (8) and upper boom Y-piece (4) link together through upper boom sensor fixing pin (12); Force transducer (9) links together through lower beam sensor gib screw (11) with lower beam Y-piece (10), and the upper end of lower beam sensor fixing pin (11) and lower beam Y-piece (10) link together through lower beam sensor fixing pin (13);

This glass folder (1) shape, it is Jiong shape that section configuration is looked on its left side, is specially a square iron plate; Middle method with the line cutting cuts out a U-shaped fixed groove; It is provided with two fixing through holes of using, and owing to the glass folder is a metal material, can not directly directly contact with glass for vehicle window (15); Between adds rubber blanket, and the function of glass folder is that this tester is fixed on the glass for vehicle window (15) easily;

This lower beam (2) is that the rectangular block round bar and trough of belt is formed by connecting; Through hole on the rectangular block of middle trough of belt is used to install lower beam connecting pin (6); Thereby it is upper boom (3), lower beam (2) is hinged; Lower beam (2) one ends are connected on the glass support pallet (5), and the other end is connected on the lower beam Y-piece (10), and the function of lower beam is through being transferred to force transducer (9) with power that cooperating of upper boom receives glass support pallet (5) through lever principle;

This upper boom (3) is that the rectangular block round bar and trough of belt is formed by connecting; Through hole on the rectangular block of middle trough of belt is used to install the lower beam connecting pin; Thereby it is upper boom, lower beam is hinged; Upper boom one end is connected on the glass folder (1), and the other end is connected on the upper boom Y-piece (4), and the function of upper boom is through being transferred to force transducer (9) with the power that glass folder (1) is received that cooperates of lower beam through lever principle;

This upper boom Y-piece (4) is shaped as the rectangular parallelepiped spare that has the U-shaped gap; Between the through hole on upper boom Y-piece two sides, be connected with upper boom sensor fixing pin (12); On upper boom sensor fixing pin (12), be connected with upper boom sensor gib screw (8); Upper boom Y-piece (4) links together with upper boom (3), and the function of upper boom Y-piece (4) is the upper end through upper boom sensor gib screw (8) the bed knife sensor (9) that is connected with upper boom sensor fixing pin (12);

This glass support pallet (5) is the iron plate of a rectangular parallelepiped; Be connected on lower beam (2) end; The function of glass support pallet (5) is in the process that vehicle window rises, if run into obstacle midway, will have acting force to be applied on the glass support pallet (5); Glass support pallet (5) is when being under pressure; Have downward displacement, lower beam Y-piece (10) the meeting upward pressure sensor (9) that therefore is connected with lower beam (2) other end, thus realized the power that glass support pallet (5) receives is transferred to the process of force transducer (9);

Should go up lower beam connecting pin (6); Its head is a nut shape hexahedron; The first half is smooth cylindrical bar, and the latter half is a screw thread, and its cylindrical bar partly passes the through hole of the rectangular block of upper boom (3) and lower beam (2) trough of belt; Threaded portion is used to install nut, fixedly upper boom (3) and lower beam (2); The function of last lower beam connecting pin (6) is that upper boom (3) and lower beam (2) is hinged, makes that lower beam (2) can be with respect to the accessible rotation of upper boom (3);

This trip bolt (7) is the standard web member of choosing as required; In order to make that glass folder (1) can clampingc car glass pane (15); This trip bolt mounting center and glass folder (1) topmost distance approximates 1/2nd of glass folder height greatly, so the effect of trip bolt (7) is to make that glass folder (1) can clampingc car glass pane (15);

This upper boom sensor gib screw (8); A through hole is arranged on screw cap; The effect of through hole is to pass upper boom sensor fixing pin (12); Hang on the upper boom Y-piece (4), its lower end threaded portion be connected to force transducer (9) from threaded hole, the function of upper boom sensor gib screw (8) is the upper end of bed knife sensor (9);

This force transducer (9) is commercial that chooses as required;

This lower beam Y-piece (10) shape is identical with the upper boom Y-piece; Between the through hole on lower beam Y-piece two sides, be connected with lower beam sensor fixing pin (13); On lower beam sensor fixing pin (13), be connected with lower beam sensor gib screw (11); Lower beam Y-piece (10) links together with lower beam (2), and the function of lower beam Y-piece (10) is the lower end through lower beam sensor gib screw (11) the bed knife sensor (9) that is connected with lower beam sensor fixing pin (13);

This lower beam sensor gib screw (11) shape is identical with upper boom sensor gib screw (8); A through hole is arranged on screw cap; The effect of through hole is to pass lower beam sensor fixing pin (13); Hang on the lower beam Y-piece (10), its lower end threaded portion be connected to force transducer (9) from threaded hole, the function of lower beam sensor gib screw (11) is the lower end of bed knife sensor (9);

This upper boom sensor fixing pin (12) is the standard web member of choosing as required, and its function is that upper boom sensor gib screw (8) is connected on the upper boom Y-piece (4);

This lower beam sensor fixing pin (13) is the standard web member of choosing as required, and its function is that lower beam sensor gib screw (11) is connected on the lower beam Y-piece (10);

This rubber blanket (14) is directly to be cut to glass folder same size from the thick electrostatic prevention rubber of commercially available 2mm; Directly pad is between glass for vehicle window (15) and glass folder (1) then, and the function of rubber blanket (14) is to prevent that glass for vehicle window (15) from being scratched;

It is the standard web member of choosing as required that this glass clamps solid nut (16), matches with trip bolt (7).

2. a kind of power windows according to claim 1 is closed force tester, it is characterized in that: the model of this single-chip microcomputer is STC12C48S2.

3. a kind of power windows according to claim 1 is closed force tester, it is characterized in that: the model of this power circuit voltage stabilizing chip is LM7805.

4. a kind of power windows according to claim 1 is closed force tester, it is characterized in that: the model of this LCDs is HY-12864T-201.

5. a kind of power windows according to claim 1 is closed force tester, it is characterized in that: the model of this force transducer is CFBLSM.

6. a kind of power windows according to claim 1 is closed force tester, it is characterized in that: the width of the U-shaped fixed groove of this glass folder is 7-9mm.

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