Multi-gear intermittent control circuit for false climbing windscreen wiper

Abstract

The utility model relates to the field of engineering machinery, in particular to a false climbing windscreen wiper multi-gear intermittent control circuit, which comprises a controller, a power supply and a windscreen wiper, the windscreen wiper comprises a windscreen wiper motor and a restorer for resetting control of the windscreen wiper, and the windscreen wiper motor is connected with the power supply to form a power supply loop. The controller is connected in series in a power supply loop of the wiper motor and performs circuit on-off control on the wiper motor, a reset line of the restorer is connected with a reset signal control port of the controller, a coil of the relay is connected with a signal output port of the controller to form a power supply loop, and the power supply loop is connected with the restorer. A normally open contact of the relay is installed on a power supply loop of the wiper motor. According to the windscreen wiper control circuit, on-off control is conducted on the power supply loop of the windscreen wiper motor through the controller, and multi-gear intermittent work of a windscreen wiper is achieved. The automatic reset function of the windscreen wiper is achieved through matched use of the relay and the reset device, and the automatic reset device has the advantages of being low in cost, high in control precision and high in response speed.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to a false climbing windshield wiper circuit for realizing multi-speed intermittent control. Background Art

[0002] The existing wiper systems of excavators are generally divided into two solutions: true climbing and false climbing. The true climbing solution has an independent wiper controller, which can realize intermittent function and has a higher cost. The false climbing solution generally only provides two-speed wiper motors, and the wipers are only divided into low speed and high speed. Different intermittent gear functions can also be achieved through different intermittent relays, but the circuit is complicated and the cost will also increase.

[0003] In order to solve the above problems, some wipers with multi-speed intermittent control functions have appeared on the market. However, these wipers are often complex in structure, high in manufacturing cost, and have problems such as low control accuracy and slow response speed in actual use. Utility Model Content

[0004] The utility model aims to provide a false climbing wiper circuit for realizing multi-speed intermittent control with low cost, high control accuracy and fast response speed in view of the above problems.

[0005] To achieve the above-mentioned purpose, the utility model discloses a false climbing wiper circuit for realizing multi-speed intermittent control, including a controller, a power supply and a wiper, and its structural characteristics are: the wiper includes a wiper motor and a resetter for resetting the wiper, the wiper motor is connected to the power supply to form a power supply circuit, the controller is connected in series in the power supply circuit of the wiper motor and controls the circuit on and off of the wiper motor, and the reset line of the resetter is connected to the reset signal control port of the controller.

[0006] The wiper works when the controller outputs current at the intermittent and continuous ports. When the output stops, the wiper stops working after returning to the initial reset position. By controlling the power outages at different times, the traditional multi-speed intermittent function achieved by adding different intermittent relays can be replaced. The reset device can ensure that the wiper can automatically return to the initial position after each work, which not only improves the convenience of using the wiper, but also increases its safety, avoiding the driver's sight being affected by the wiper stopping in an inappropriate position. By controlling the on-off control of the power supply circuit of the wiper motor by the controller, the working state of the wiper can be accurately controlled, and multi-speed intermittent control can be achieved to meet the wiping needs under different rainfalls, thereby improving the intelligence and applicability of the wiper.

[0007] It also includes a relay, the coil of the relay is connected to the signal output port of the controller to form a power supply circuit, and the normally open contact of the relay is installed on the power supply circuit of the wiper motor. The relay provides more possibilities for wiper control. By controlling the coil of the relay through the signal output of the controller, and then controlling its contact state, flexible control of the power supply circuit of the wiper motor can be achieved, further improving the flexibility and reliability of the circuit system.

[0008] The self-resetting contact of the resetter is electrically connected to the normally closed contact of the relay, so that a linkage relationship is formed between the resetter and the relay. When the resetter triggers the reset, the current forms a loop through the normally closed contact of the relay until the wiper returns to the initial position and the circuit is disconnected.

[0009] The system also includes a key switch, and the switch contact of the resetter is electrically connected to the ACC position of the key switch. When the key switch is switched to the ACC position, if the wiper is not in the initial position, the resetter is triggered to reset the wiper, further improving the coordination of the system.

[0010] The negative pole of the power supply is connected to the vehicle body to ensure the safe and stable operation of the circuit system.

[0011] A power switch is installed on the connection line between the negative pole of the power supply and the vehicle body. The setting of the power switch allows the driver to conveniently control the on and off of the entire circuit system, further improving the convenience and safety of the system.

[0012] In summary, the beneficial effects of the utility model are as follows: the new type of false climbing wiper proposed in the circuit realizes a multi-speed intermittent control circuit, and the controller controls the on-off of the power supply circuit of the wiper motor, thereby realizing the multi-speed intermittent operation of the wiper. At the same time, through the coordinated use of the relay and the resetter, the automatic reset function of the wiper is realized, which improves the convenience and safety of the wiper, making the entire circuit system more perfect and easy to operate and maintain. It also has the advantages of low cost, high control accuracy and fast response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the circuit structure of the utility model.

[0014] In the figure: key switch 1, controller 2, relay 3, power supply 4, power switch 5, wiper motor 6, resetter 7, wiper 8. DETAILED DESCRIPTION

[0015] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0016] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0017] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0018] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0019] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0020] A false climbing wiper realizes multi-speed intermittent control circuit, including a controller 2, a power supply 4 and a wiper 8, wherein the wiper 8 includes a wiper motor 6 and a resetter 7 for resetting the wiper, the wiper motor 6 is connected to the power supply 4 to form a power supply circuit, the controller 2 is connected in series in the power supply circuit of the wiper motor 6 and controls the circuit on and off of the wiper motor 6, and the resetter 7 is electrically connected to the reset signal control port of the controller 2. Figure 1 The setting of the resetter 7 can ensure that the wiper 8 can automatically return to the initial position after each work is completed, which not only improves the convenience of using the wiper 8, but also increases its safety, avoiding the driver's sight being affected by the wiper 8 stopping at an inappropriate position. The controller 2 controls the power supply circuit of the wiper motor 6 on and off, and can accurately control the working state of the wiper 8, realize multi-speed intermittent control, adapt to the wiping needs under different rainfall, and improve the intelligence and applicability of the wiper 8. The resetter 7 is a prior art, and the specific working principle refers to patent CN2017205235303.

[0021] See attached Figure 1, also includes a relay 3, the coil of the relay 3 is connected to the signal output port of the controller 2 and forms a power supply circuit, and the normally open contact of the relay 3 is installed on the power supply circuit of the wiper motor 6. The relay 3 provides more possibilities for the control of the wiper 8. The coil of the relay 3 is controlled by the signal output of the controller 2, and then the contact state is controlled, so that the flexible control of the power supply circuit of the wiper motor 6 can be realized, and the flexibility and reliability of the circuit system are further improved. The self-resetting contact of the resetter 7 is electrically connected to the normally closed contact of the relay 3. So that a linkage relationship is formed between the resetter 7 and the relay 3. When the resetter 7 triggers the reset, the current forms a loop through the normally closed contact of the relay 3 until the wiper returns to the initial position and the circuit is disconnected. It also includes a key switch 1, and the switch contact of the resetter 7 is electrically connected to the ACC gear of the key switch 1. When the key switch 1 is switched to the ACC gear, if the wiper is not in the initial position, the resetter 7 will be triggered to reset the wiper, further improving the coordination of the system. The wiper works when the intermittent and continuous gear ports of the controller 2 output current, and the wiper stops working when the output stops. By controlling the power-off at different times, the traditional multi-speed intermittent function achieved by adding different intermittent relays 3 can be replaced; by detecting the reset signal of the wiper itself (a high level when the wiper is not in the initial position, and a low level after turning to the initial position), it can be detected whether the wiper is in the initial position, and then the intermittent and continuous gear ports are controlled to output intermittent signals to achieve the wiper starting to intermittent at the initial position every time.

[0022] The negative pole of the power source 4 is connected to the vehicle body, which can ensure the safe and stable operation of the circuit system. A power switch 5 is installed on the connection line between the negative pole of the power source 4 and the vehicle body. The setting of the power switch 5 allows the driver to conveniently control the on and off of the entire circuit system, further improving the convenience and safety of the system.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A false climbing wiper circuit for realizing multi-speed intermittent control, comprising a controller (2), a power supply (4) and a wiper (8), characterized in that: The wiper (8) comprises a wiper motor (6) and a resetter (7) for resetting the wiper, the wiper motor (6) being connected to a power supply (4) to form a power supply circuit, the controller (2) being connected in series in the power supply circuit of the wiper motor (6) and performing circuit on / off control on the wiper motor (6), and a reset line of the resetter (7) being connected to a reset signal control port of the controller (2).

2. The false climbing wiper realizing multi-speed intermittent control circuit as claimed in claim 1, characterized in that: It also includes a relay (3), the coil of the relay (3) is connected to the signal output port of the controller (2) to form a power supply circuit, and the normally open contact of the relay (3) is installed on the power supply circuit of the wiper motor (6).

3. The false climbing wiper realizing multi-speed intermittent control circuit as claimed in claim 2, characterized in that: The self-resetting contacts of the resetter (7) are electrically connected to the normally closed contacts of the relay (3).

4. The false hill-climbing wiper realizing multi-speed intermittent control circuit as claimed in claim 3, characterized in that: It also includes a key switch (1), wherein the switch contacts of the resetter (7) are electrically connected to the ACC position of the key switch (1).

5. The false hill-climbing wiper realizing multi-speed intermittent control circuit as claimed in claim 1, characterized in that: The negative electrode of the power source (4) is connected to the vehicle body.

6. The false hill-climbing wiper realizing multi-speed intermittent control circuit as claimed in claim 5, characterized in that: A power switch (5) is installed on the connection line between the negative electrode of the power source (4) and the vehicle body.

Images