An explosion-proof electric rain wiper system for a forklift truck

Abstract

The utility model requests protect a kind of forklift explosion-proof electric wiper system, explosion-proof motor assembly is arranged with a restorator in its adoption, the wiper blade of wiper assembly is explosion-proof wiper blade, wiper blade includes wiper arm and buffer lining strip, wiper arm bottom is equipped with wiper blade, and inside of wiper blade is opened with inner buffer passage, the bottom of wiper blade is fixedly provided with main scraping lip, and the top of wiper blade is fixedly provided with butt strip.The forklift explosion-proof wiper, buffer lining strip can absorb impact energy, reduce the rigid vibration of wiper blade, indirectly reduce the possibility of spark generation, play the purpose of explosion-proof, further improve the safety of forklift in workshop environment with flammable and explosive gas or dust working.

Description

Technical Field

[0001] This invention relates to the field of forklift-related accessories technology, and in particular to an explosion-proof electric windshield wiper system for forklifts. Background Technology

[0002] Forklifts, as engineering vehicles, have higher explosion-proof requirements than ordinary vehicles due to their working environment. Currently, the reset function of the wiper motor in traditional forklifts is usually achieved through a rocker switch, but this cannot meet the requirements of explosion-proof forklifts. The explosion-proof wipers installed in the cab and windshield of current explosion-proof forklifts are typically manual. When customers require electric explosion-proof wipers, the existing system can only be controlled by an explosion-proof rotary switch with only a switching signal, and cannot achieve the reset function. Furthermore, the wiper blades used in the wiper assemblies of current explosion-proof forklifts also employ a conventional design.

[0003] Because forklifts typically operate in complex environments, unlike ordinary vehicles, their primary function extends beyond simply clearing rainwater from windshields. They also need to remove dust, dirt, and other solid debris to provide the driver with a clear view and ensure driving safety. In dusty environments, forklift wipers require enhanced explosion-proof performance. Even replacing the wiper blade material in traditional designs limits the improvement in explosion-proof capabilities. Utility Model Content

[0004] The purpose of this utility model is twofold: first, to solve the problem that current explosion-proof forklifts lack a reset function, making it difficult to meet customer needs in subsequent improvements; and second, to further improve the explosion-proof performance of the windshield wipers of explosion-proof forklifts.

[0005] Specifically, this utility model adopts the following technical solution: An explosion-proof electric windshield wiper system for forklifts includes an explosion-proof motor assembly, a switch controller, a transmission mechanism, and a wiper assembly. The explosion-proof motor assembly and the wiper assembly are connected via the transmission mechanism. The switch controller is connected to the explosion-proof motor via a circuit. The explosion-proof motor assembly is equipped with a resetter. The switch controller contains a reset control module and is connected to the resetter via a reset circuit. The wiper blade of the wiper assembly is an explosion-proof wiper blade. Specifically, the wiper blade includes a wiper arm and a buffer inner liner. A wiping blade is provided at the bottom of the wiper arm, and an inner buffer channel is opened inside the wiping blade. A main wiping lip is fixedly provided at the bottom of the wiping blade, and a connecting strip is fixedly provided at the top of the wiping blade.

[0006] The resetter in the above scheme is designed by utilizing the characteristic principle that a relay has two contacts, normally open and normally closed, combined with the circuit principle of the wiper motor itself, to achieve single-signal control of motor rotation and reset.

[0007] Furthermore, both the wiper arm and the wiper blade are arc-shaped, and the inner buffer channel on the wiper arm is adapted to the size of the buffer liner strip. The cross-section of both the inner buffer channel and the buffer liner strip is dovetail-shaped.

[0008] Furthermore, the buffer liner strip is inserted inside the inner buffer channel, and the buffer liner strip is made of elastic foam.

[0009] Furthermore, the wiper arm has a mating track inside, and the size of the mating track is adapted to the mating strip, while the mating strip is inserted into the inside of the mating track.

[0010] Furthermore, both the docking track and the docking strip are trapezoidal, and the wiper arm and the wiper blade are spliced ​​together through the docking track and the docking strip.

[0011] Furthermore, the main scraping lip is triangular in shape, and the bottom of the main scraping lip is rounded. Both sides of the main scraping lip are provided with receiving grooves A, and the receiving grooves A are isosceles trapezoids.

[0012] Furthermore, the wiper blade also includes a secondary scraper lip, and the top of the secondary scraper lip is provided with a scraper foot. The scraper foot is inclined and the angle between the scraper foot and the forklift windshield is 30 degrees. A receiving groove B is provided on the side wall of the scraper foot.

[0013] In the above solution, by inserting an elastic buffer strip inside the wiper blade, the buffer strip can absorb impact energy when the main wiper lip rubs against the glass or comes into contact with metal debris, reducing the hard vibration of the wiper blade and indirectly reducing the possibility of sparks, thus achieving the purpose of explosion prevention and improving the safety of forklifts working in workshop environments with flammable and explosive gases or dust. The main wiper lip is triangular with rounded corners at the bottom. The triangular structure allows the main wiper lip to form line contact with the glass, concentrating the wiping pressure and improving the efficiency of removing rainwater and dust. The rounded corner design avoids direct friction between the sharp edges and the glass, preventing scratches on the glass surface and reducing wear on the main wiper lip itself. Meanwhile, by using the main scraping lip and the secondary scraping lip together, a dual guarantee of pretreatment and fine scraping is achieved. The scraping feet of the secondary scraping lip first perform coarse treatment, removing large particles of debris and stubborn stains; then the main scraping lip performs fine scraping, removing residual rainwater and fine dust. The main scraping lip and the secondary scraping lip work together to form a progressive scraping process, which can adapt to more complex stain scenarios compared to a single scraping lip, effectively protecting the main scraping lip and extending its service life.

[0014] Compared with the prior art, the beneficial effects of this utility model are: First, this application improves the overall structure design by configuring a resetter and a reset circuit, thereby improving the reset function that is currently lacking in forklifts. Second, by improving the structural design of the wiper blades in the wiper assembly, the explosion-proof performance can be further enhanced. Third, by improving the structural design of the wiper blades, the cleaning effect can be enhanced and the service life extended. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the wiper blade of the wiper system of this utility model; Figure 2 This is a bottom view of the wiper blade of the wiper system of this utility model; Figure 3 This is an assembly drawing of the wiper blades of the wiper system of this utility model; Figure 4 for Figure 3 A bottom view; Figure 5 This is a three-dimensional view of the wiper blade of the wiper system of this utility model; Figure 6 This is a side view of the wiper blade of the wiper system of this utility model.

[0016] In the diagram: 1. Wiper arm; 11. Connecting rail; 2. Wiper blade; 21. Connecting strip; 22. Inner buffer channel; 23. Main wiper lip; 24. Receiving groove A; 25. Secondary wiper lip; 251. Scraper foot; 252. Receiving groove B; 3. Buffer inner liner. Detailed Implementation

[0017] The representative embodiments shown in the accompanying drawings will now be further refined. It should be understood that the following description is not intended to limit the embodiments to a single preferred embodiment. Rather, it is intended to cover alternatives, modifications, and equivalents that may be included within the substance and scope of the embodiments defined by the appended claims.

[0018] Our company has improved and developed an explosion-proof electric windshield wiper system for forklifts, which specifically includes an explosion-proof motor assembly, a switch controller, a transmission mechanism, and a wiper assembly. The explosion-proof motor assembly and the wiper assembly are connected through the transmission mechanism. The switch controller is connected to the explosion-proof motor through a circuit. The explosion-proof motor assembly is equipped with a reset device. The switch controller is equipped with a reset control module and is connected to the reset device through a reset circuit.

[0019] The reset device in this design utilizes the characteristic of a relay with normally open and normally closed contacts, combined with the circuit principle of the wiper motor itself, to achieve single-signal control of motor rotation and reset. The relay model selected is the Shanghai Songchuan 896H-1CH-C1-R1 relay. The motor is a TS16949 from Yueqing Shengtong Auto Parts Co., Ltd.

[0020] The specific operation involves connecting the relay's three pins (A, B, and C) to the motor's low-speed line, the power supply's negative line, and the motor's reset line, respectively. When the explosion-proof switch is closed, a signal is sent to the relay coil, causing pins A and B to close, thus connecting the low-speed line to the power supply's negative line, and the motor begins to rotate. When the explosion-proof switch is open, pins A and C close, connecting the low-speed line to the reset line, and the motor resets to its starting position. This layout effectively achieves the motor's reset function, thereby enabling the windshield wiper's reset function.

[0021] Meanwhile, the wiper blades of the wiper assembly were upgraded to explosion-proof blades and further improvements were made, specifically, such as... Figure 1-6 As shown, the wiper blade provided by this utility model includes a wiper arm 1 and a buffer inner liner 3. The wiper arm 1 is provided with a wiper blade 2 at the bottom, and the wiper blade 2 has an inner buffer channel 22 inside. The wiper blade 2 is fixedly provided with a main wiping lip 23 at the bottom, and a connecting strip 21 is fixedly provided at the top of the wiper blade 2.

[0022] Both the wiper arm 1 and the wiper blade 2 are arc-shaped, and the inner buffer channel 22 on the wiper arm 1 is adapted to the size of the buffer liner 3. The cross-sections of both the inner buffer channel 22 and the buffer liner 3 are dovetail-shaped. The buffer liner 3 is inserted inside the inner buffer channel 22, and the buffer liner 3 is made of elastic foam.

[0023] The wiper arm 1 has a mating track 11 inside, and the size of the mating track 11 is adapted to the mating strip 21. The mating strip 21 is inserted into the mating track 11. Both the mating track 11 and the mating strip 21 are trapezoidal, and the wiper arm 1 and the wiper blade 2 are spliced ​​together through the mating track 11 and the mating strip 21.

[0024] The wiper blade 2 has receiving grooves A24 on both sides of its bottom. When wiping, the receiving grooves A24 on both sides of the wiper blade 2 can increase the drainage effect and guide hard conductive materials such as metal shavings into the grooves. The receiving grooves A24 can physically collect the metal shavings that the rubber strip comes into contact with during the wiping process, avoiding the generation of sparks or accelerated wear at the friction interface between the rubber strip and the glass, thus improving the safety of the forklift in workshop environments with flammable and explosive gases or dust. The wiper blade 2 has an elastic buffer liner 3 inserted inside. When the wiper blade 2 collides with hard conductive materials such as metal shavings on the glass, the buffer liner 3 can absorb part of the impact energy, reduce the impact force, thereby reducing the possibility of sparks and also reducing the wear of the rubber strip.

[0025] like Figure 1-4As shown: When the main wiper lip 23 rubs against the glass or comes into contact with metal fragments, the buffer liner 3 can absorb the impact energy, reduce the hard vibration of the wiper blade 2, indirectly reduce the possibility of sparks, and achieve the purpose of explosion prevention, while protecting the main wiper lip 23 and reducing wear; the mating track 11 inside the wiper arm 1 is size-matched with the mating strip 21 on the top of the wiper blade 2, and both are trapezoidal, spliced ​​by a plug-in method; the trapezoidal structure has anti-detachment and locking characteristics, which can prevent the wiper blade 2 from slipping off the mating strip 21 of the wiper arm 1 during high-speed wiping or vibration. The wiper arm 1 and wiper blade 2 are both curved to conform to the curvature of the forklift cab windshield. This ensures that the main wiper lip 23 remains in close contact with the glass throughout the entire wiping stroke, reducing blind spots and ensuring clear visibility while avoiding excessive friction caused by excessive local pressure. During later maintenance, the buffer liner 3 or wiper blade 2 can be removed and replaced individually without complicated tools, reducing maintenance costs and time.

[0026] In addition, the main scraper lip 23 is triangular in shape, and the bottom of the main scraper lip 23 is rounded. Both sides of the main scraper lip 23 are provided with receiving grooves A24, which are isosceles trapezoids. The wiper blade 2 also includes a secondary scraper lip 25, and the top of the secondary scraper lip 25 is provided with a scraper foot 251. The scraper foot 251 is inclined, and the angle between the scraper foot 251 and the forklift windshield is 30 degrees. A receiving groove B252 is provided on the side wall of the scraper foot 251.

[0027] like Figure 4-5 As shown: The main scraping lip 23 is triangular with rounded corners at the bottom; the triangular structure allows the main scraping lip 23 to form line contact with the glass, concentrating the scraping pressure and improving the efficiency of removing rainwater and dust; the rounded corner design avoids direct friction between the sharp edges and the glass, preventing scratches on the glass surface and reducing wear on the main scraping lip 23 itself; the receiving grooves A24 on both sides of the main scraping lip 23 are isosceles trapezoidal, which can temporarily store scraped rainwater or small debris, preventing them from flowing back into the cleaned area during the scraping process and ensuring a clear field of vision; The scraper foot 251 at the top of the secondary scraper lip 25 is set at an angle of 30 degrees with the forklift windshield. The 30-degree angle can ensure that the scraper foot 251 effectively fits the glass, and can also use the scraping force in the inclined direction to remove stubborn debris on the glass surface in advance, such as dried dirt and metal shavings, to prevent these hard objects from entering the friction area of ​​the main scraper lip 23, thereby reducing the risk of wear and sparks on the main scraper lip 23. The receiving groove B252 on the side wall of the scraper foot 251 can divert debris and rainwater scraped by the scraper foot 251; on the one hand, it can prevent debris from accumulating on the edge of the scraper foot 251 and affecting the scraping effect; on the other hand, it can guide rainwater to drain quickly, prevent water from forming a water film on the glass surface, and further improve the clarity of vision. The main scraping lip 23 and the secondary scraping lip 25 work together to achieve dual protection of pretreatment and fine scraping. The scraper foot 251 of the secondary scraping lip 25 first performs coarse treatment to remove large particles of debris and stubborn stains; the main scraping lip 23 then performs fine scraping to remove residual rainwater and fine dust. The main scraping lip 23 and the secondary scraping lip 25 work together to form a progressive scraping process. Compared with a single scraping lip, it can adapt to more complex stain scenarios and effectively protect the main scraping lip 23, extending its service life.

[0028] Through the above structural design, firstly, this application has improved the overall structure by configuring a resetter and a reset circuit, thereby improving the reset function that is currently lacking in forklifts; thus facilitating the subsequent fulfillment of customer needs. Second, by improving the structural design of the wiper blades in the wiper assembly, the explosion-proof performance can be further enhanced. Third, by improving the structural design of the wiper blades, the cleaning effect can be enhanced and the service life extended.

[0029] It will be obvious to those skilled in the art that, based on the above teachings, certain modifications, combinations, and variations can be made.

Claims

1. An explosion-proof electric windshield wiper system for forklifts, comprising an explosion-proof motor assembly, a switch controller, a transmission mechanism, and a wiper assembly, wherein the explosion-proof motor assembly and the wiper assembly are connected via the transmission mechanism, and the switch controller is connected to the explosion-proof motor via an electrical circuit, characterized in that: The explosion-proof motor assembly is equipped with a resetter, and the switch controller is equipped with a reset control module and connected to the resetter through a reset circuit. The wiper blade of the wiper assembly is an explosion-proof wiper blade. Specifically, the wiper blade includes a wiper arm (1) and a buffer inner liner (3). The wiper arm (1) is provided with a wiper blade (2) at the bottom, and the wiper blade (2) has an inner buffer channel (22) inside. The wiper blade (2) is fixedly provided with a main wiper lip (23) at the bottom, and a connecting strip (21) is fixedly provided at the top of the wiper blade (2).

2. The explosion-proof electric windshield wiper system for forklifts according to claim 1, characterized in that: The wiper arm (1) and wiper blade (2) are both arc-shaped, and the inner buffer channel (22) on the wiper arm (1) is adapted to the size of the buffer inner liner (3). The cross-section of the inner buffer channel (22) and the buffer inner liner (3) are both dovetail-shaped.

3. The explosion-proof electric windshield wiper system for forklifts according to claim 2, characterized in that: The buffer liner (3) is inserted inside the inner buffer channel (22), and the buffer liner (3) is made of elastic foam.

4. The explosion-proof electric windshield wiper system for forklifts according to claim 1, characterized in that: The wiper arm (1) has a docking track (11) inside, and the docking track (11) is adapted to the size of the docking strip (21), while the docking strip (21) is inserted into the docking track (11).

5. The explosion-proof electric windshield wiper system for forklifts according to claim 4, characterized in that: The docking track (11) and the docking strip (21) are both trapezoidal, and the wiper arm (1) and the wiper blade (2) are spliced ​​together by the docking track (11) and the docking strip (21).

6. The explosion-proof electric windshield wiper system for forklifts according to claim 1, characterized in that: The main scraping lip (23) is triangular and the bottom of the main scraping lip (23) is rounded. Both sides of the main scraping lip (23) are provided with receiving grooves A (24), and the receiving grooves A (24) are isosceles trapezoids.

7. The explosion-proof electric windshield wiper system for forklifts according to claim 1, characterized in that: The wiper blade (2) also includes a secondary scraper lip (25), and the top of the secondary scraper lip (25) is provided with a shovel foot (251). The shovel foot (251) is inclined, and the angle between the shovel foot (251) and the forklift windshield is 30 degrees. A receiving groove B (252) is provided on the side wall of the shovel foot (251).

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