CN105905074A - Low-temperature hardening performance improvement device for rubber strip of automobile windscreen wiper - Google Patents

Abstract

The invention discloses a device for improving the performance of automobile wiper rubber strips hardened at low temperature, which is characterized in that: a wiper arm (1) is connected to a wiper chuck (3), and the rubber strip (9) is passed through a double-elastic high-carbon steel sheet (10) and the edge protection covers (5) at both ends are fixed on the deflector (2), the wiper clip (3) is fixed in the middle of the deflector (2), and the electric heater (7) is inlaid on the rubber strip (9) The lower end; the two ends of the electric heater (7) are provided with wiring ports (8), which are connected with wires and wires.

Description

A performance improvement device for low-temperature hardening of automobile wiper rubber strips

technical field

The invention belongs to the technical field of automobile driving safety, and is mainly applied to the performance improvement of the rubber strip of the windshield wiper of the automobile in a low-temperature environment, and in particular relates to a performance improving device for the low-temperature hardening of the rubber strip of the automobile wiper.

Background technique

With the development of the automobile industry, auto parts are also continuously optimized and improved. As one of the safety components on the car, although the structure is not very complicated, the wiper plays a very important role in ensuring driving safety. Wipers are used on cars to remove rain, snow, insects, dust and other dirt from the windshield to ensure a clear view of the driver. It is also very important to ensure that the windshield is clear when the car is driving in some low-temperature environments, which requires that the wiper strips can still work with the best performance in low-temperature environments. With the continuous optimization of wipers, the performance of wipers in low temperature conditions has also been improved accordingly.

Looking at the development and research of automobile wiper at home and abroad, the performance research of automobile wiper under low temperature conditions is mainly manifested in the following aspects:

1. Using the principle of aerodynamics, the wiper blade is divided into three-stage design, which can make the pressure evenly distributed on the entire wiper blade, thus improving the seamless wiping effect; and the design of the deflector is streamlined, Effective use of wind pressure, so that the wiper can better fit the glass, strengthen the wiping force of the wiper, and ensure clearer wiping; although this method can well adapt to the harsh working conditions of the car at high speed; However, the hardening problem of the rubber strip has not been well solved in some low-temperature harsh environments, thus causing the wiper to vibrate, make noise, and have poor wiping effect when wiping the rain, which seriously affects the driver's field of vision.

2. The rubber strip is made of natural rubber and other synthetic rubber with special treatment materials. This kind of rubber strip is difficult to wipe off ice and snow in the environment of wind and snow, and it cannot guarantee the working performance of the rubber strip at the best temperature. The best state range, and the special processing method increases the cost of manufacturing.

At this stage, there are still many limitations in the solutions to the related problems of wiping performance of wiper blades and hardening of rubber strips in low temperature environments.

Contents of the invention

The technical problem to be solved by the present invention is to provide a seamless wiping effect, no vibration and noise, and a streamlined flow guide when the car is running in a low-temperature environment, especially in a very low-temperature wind and snow weather. It is a wiper performance improvement device that effectively utilizes wind pressure and prevents rubber strips from hardening.

The technical solution of the present invention is: a device for improving the performance of automobile wiper rubber strips hardened at low temperature, including the connection between the wiper arm and the wiper clip. On the board, the wiper clip is fixed in the middle of the deflector, and the electric heater is inlaid at the lower end of the rubber strip; the two ends of the electric heater are provided with wiring ports, which are connected with wires and metal wires.

There is a specially treated groove on the metal card core that matches the U-shaped interface on the wiper arm. First, the bolt holes on the wiper card head are aligned with the bolt holes on the metal card core through the positioning bolts, and the positioning bolts are aligned with the bolt holes on the metal card core. The metal card core is also matched with the wiper clip having the through hole 1 and the through hole 2 and the relative position is fixed.

When the metal wire passes through the support column at the bottom of the wiper, it is connected to the support column in the form of a spiral telephone wire, and then leads to the through hole 1 of the wiper card along the lower edge of the wiper arm, and then passes through the specially treated metal wire. The core slot and the through hole 2 of the wiper clip enter the gap between the deflector and the rubber strip, and then lead the two metal wires to the left and right ends of the wiper through the gap between the deflector and the rubber strip At the edge protection cover, the metal wires are respectively connected to the left and right connection ports of the electric heater embedded in the lower end of the rubber strip through the through holes in the left and right edge protection covers.

A temperature sensor is arranged at the electric heating sheet, the temperature sensor is connected to the CPU, and the output end of the CPU is connected to the control coil of the control switch of the electric heating sheet.

The temperature sensor monitors the temperature at the heating plate, thereby indirectly monitoring the temperature of the rubber strip. After the temperature sensor detects the temperature data, it transmits the data to the CPU, and the CPU analyzes and processes the data; when the temperature is lower than the optimum value of the rubber strip When the working temperature range is off-line, the CPU closes the switch through the control coil of the control switch of the electric heater, and the electric heater heats up, thereby increasing the temperature of the electric heater and the rubber strip to maintain the optimum working temperature range of the rubber strip; when When the temperature is higher than the optimal working temperature range of the rubber strip, stop supplying power to the electric heater, so that the temperature of the electric heating plate and the rubber strip is maintained within the optimum working temperature range of the rubber strip; through such repeated adjustments, the temperature can be Maintain within the optimum working temperature range of the rubber strip.

Beneficial effects of the present invention: the device is inlaid with an electric heater at the lower end of the rubber strip—the place in contact with the windshield, and the electric heater is radiated heat by energizing the electric heater, and the rubber strip is heated by the heat emitted by the electric heater , so as to avoid the phenomenon that the rubber strip becomes hard in the low temperature environment. At the same time, the temperature sensor is used to monitor the temperature of the electric heater and the rubber strip, and then the heat emitted by the electric heater is adjusted through the temperature adjustment device controlled by the closed-loop circuit, so that the temperature of the rubber strip is just within its optimal temperature working range. The deterioration of the working performance of the rubber strip in the low temperature environment is avoided, thereby the vibration and noise of the wiper can be effectively reduced, and the wiping performance of the wiper and the clarity of the windshield can be improved.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a sectional view of the connecting part of the wiper card head 3;

Fig. 3 is a structural schematic diagram of the wiper card head 3;

Fig. 4 is a structural schematic diagram of the metal card core 17;

Fig. 5 is a schematic structural view of the edge protection cover 5;

Figure 6 is a schematic diagram of the temperature regulation system.

detailed description

A performance improvement device for low-temperature hardening of automobile wiper rubber strips, comprising a wiper arm 1 connected to a wiper clip 3, a rubber strip 9 fixed on a deflector 2 through double-elastic high-carbon steel sheets 10 and edge protection covers 5 at both ends On the top, the wiper clip 3 is fixed in the middle of the deflector 2, and the electric heater 7 is embedded in the lower end of the rubber strip 9; the two ends of the electric heater 7 are provided with connection ports 8, which are connected with the wires and wires.

The metal card core 17 matched with the U-shaped interface 4 on the wiper arm 1 has a specially treated groove 16. Firstly, the bolt hole 14 on the wiper card head and the bolt on the metal card core are connected through the positioning bolt 6. The holes 15 are aligned with each other, and at the same time, the positioning bolt 6 also cooperates the metal clamp 17 with the wiper clamp 3 with the through holes 1 12 and 2 13 and fixes the relative position; the wiper clamp 3 is fixed on the guide The middle position of the flow plate 2; the rubber strip 9 and the deflector 2 are fixed together by double-elastic high-carbon steel sheets 10 and the edge protection covers 5 at the left and right ends to prevent the rubber strip 9 from contacting the flow guide when the wiper is working. There is a relative movement between the plates 2, which affects the normal operation of the wiper; the electric heater 7 is inlaid on the lower end of the rubber strip 9 (where it contacts the windshield) during the production process of the rubber strip 9; It is provided with wiring port 8, which is convenient to be connected with electric wire and metal wire.

When the metal wire passes through the support column at the bottom of the wiper, it is connected to the support column in the form of a spiral telephone wire, and then leads along the lower edge of the wiper arm 1 to the through hole 1 12 of the wiper clamp, and then passes through the special treatment The metal core groove 16 and the through hole 2 13 of the wiper clip enter the gap 11 between the deflector and the rubber strip, and then lead the two metal wires through the gap 11 between the deflector and the rubber strip To the left and right edge protection covers 5 of the wiper, the metal wires are connected to the left and right wiring ports 8 embedded in the lower end of the rubber strip 9 through the through holes 18 in the left and right edge protection covers, so as to achieve The purpose of energizing the electric heater 7.

After electrifying the electric heater 7, the more heat that the electric heater 7 dissipates along with the prolongation of the electrification time, the hardening performance of the rubber strip 9 in a low-temperature environment is improved; but as the electric heater 7 generates heat gradually When the temperature reaches a certain high temperature, it will cause abnormal phenomena such as softening, melting, thermal oxidation, thermal decomposition and burning of the rubber strip 9; so a control system is needed to control all the conditions of the electric heater 7 when it is working. The heat emitted thereby controls the temperature of the rubber strip 9, so that the temperature of the rubber strip 9 should not be too low or too high, but just maintained within the optimal temperature working range of the rubber strip 9 performance.

The electric heater 7 is provided with a temperature sensor, the temperature sensor is connected to the CPU, and the output end of the CPU is connected to the control coil of the control switch of the electric heater 7 .

The temperature sensor monitors the temperature of the heating plate 7, thereby indirectly monitoring the temperature of the rubber strip 9. After the temperature sensor detects the temperature data, the data is sent to the CPU, and the CPU analyzes and processes the data; when the temperature is lower than the rubber strip 9 When the optimal working temperature range is off-line, the CPU closes the switch through the control coil of the control switch of the electric heating sheet 7, and the electric heating sheet 7 heats up, thereby increasing the temperature of the electric heating sheet 7 and the rubber strip 9 to maintain the maximum temperature of the rubber strip 9 Within the optimal operating temperature range; when the temperature is higher than the optimal operating temperature range of the rubber strip 9, stop supplying power to the electric heating sheet 7, so that the temperature of the electric heating sheet 7 and the rubber strip 9 is maintained at the optimal operating temperature of the rubber strip 9 Within the range; through such repeated adjustments, the temperature can be maintained within the optimal working temperature range of the rubber strip 9 .

Claims (5)

1. the performance improvement device of an automobile windscreen wiper rubber strip hardening at subcritical temerature, it is characterised in that: include wiper arm (1) and windscreen wiper Dop (3) connects, and rubber strip (9) is fixed on deflector (2) by double edge-protected lids (5) playing High Carbon Steel Strip (10) and two ends On, windscreen wiper dop (3) is fixed on the centre position of deflector (2), and electric heating piece (7) is embedded in rubber strip (9) lower end；Electric heating piece (7) two ends are provided with connection jaws (8), are connected with wire metal silk.

The performance improvement device of a kind of automobile windscreen wiper rubber strip hardening at subcritical temerature the most according to claim 1, it is characterised in that: Have the groove (16) of special handling on the metal the core of the card (17) matched with the U-shaped interface (4) on wiper arm (1), first pass through Bolt (6) makes the bolt hole (14) on windscreen wiper dop and the alignment of the bolt hole (15) on metal the core of the card, positions spiral shell simultaneously Bolt (6) also by metal the core of the card (17) with have through hole 1(12) and through hole 2(13) windscreen wiper dop (3) coordinate and relative position Fixing.

The performance improvement device of a kind of automobile windscreen wiper rubber strip hardening at subcritical temerature the most according to claim 1, it is characterised in that: When metal cords is by wiper bottom support column, the form using spiral telephone wire is connected with support column, then along The lower limb of wiper arm (1) goes between the through hole 1(12 of windscreen wiper dop), then by metal the core of the card groove (16) through special handling And the through hole 2(13 of windscreen wiper dop) enter into the gap (11) between deflector and rubber strip, the most respectively by two metal electricity Line is by edges at two ends protection cap (5) place, left and right of gap (11) lead-in wire between deflector and rubber strip to wiper, metal Wire the most respectively by the through hole (18) in the edges at two ends protection cap of left and right be embedded in rubber strip (9) lower end electric heating piece (7) Two ends, left and right connection jaws (8) are connected.

4., according to the performance improvement device of a kind of automobile windscreen wiper rubber strip hardening at subcritical temerature one of claim 1-3 Suo Shu, it is special Levy and be: described electric heating piece (7) place arranges temperature sensor, and temperature sensor is connected with CPU, CPU outfan and electric heating piece (7) the control coil controlling switch connects.

The performance improvement device of a kind of automobile windscreen wiper rubber strip hardening at subcritical temerature the most according to claim 4, it is characterised in that: Electric heating piece (7) place temperature is monitored by temperature sensor, thus is indirectly monitored the temperature of rubber strip (9), and temperature passes After sensor detects temperature data, transfer data to CPU, CPU and be analyzed data processing；When temperature is less than rubber strip (9) when optimum operating temperature range rolls off the production line, the CPU control coil Guan Bi switch controlling switch by electric heating piece (7), electric heating Sheet (7) heats, thus improves the temperature of electric heating piece (7) and rubber strip (9) to maintain the optimum work of rubber strip (9) Within temperature range；When temperature is reached the standard grade higher than the optimum operating temperature range of rubber strip (9), stop powering to electric heating piece (7), Within the temperature making electric heating piece (7) and rubber strip (9) maintains the optimum operating temperature range of rubber strip (9)；By so Regulation repeatedly so that temperature is able to maintain that within the operating temperature range that rubber strip (9) is optimum.