A safety protection device, a control method for a wiper assembly, and a vehicle

Abstract

The present invention provides a safety protection device, a control method for a wiper assembly and a vehicle, relating to the technical field of vehicles. The safety protection device includes a protection main body, a sensing element and a conductive member; the sensing element is used to be connected to an in-vehicle controller, the protection main body is used to be arranged at the rear edge of the engine hood, and a channel structure is arranged in the protection main body. One ends of two conductive members are respectively connected to two ends of the sensing element, and the other ends of the two conductive members are used to pass through the channel structure to be respectively connected to the positive electrode and the negative electrode of the in-vehicle power supply; the protection main body is used to elastically deform under force so that the two conductive members at the channel structure contact each other to short-circuit the sensing element. This safety protection device can ensure that the wiper arm will not be started when it is not placed back on the glass surface, protecting the integrity of the wiper arm and the paint surface at the rear edge of the hood, and also avoiding damage to the service life of the wiper arm.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a safety protection device, a control method for a wiper assembly, and a vehicle. Background Art

[0002] With the gradual development of automobiles, the requirements for the hidden layout of the front wiper of automobiles are getting higher and higher. When the wiper assembly is not in use, it is in the initial position, and most of it is usually hidden under the rear edge of the engine hood. The initial position of the wiper arm cannot be lifted. When replacing the wiper blade, the wiper arm needs to be set to the maintenance gear, that is, the upper limit position of the wiper arm, and then the wiper arm is lifted and locked to replace the wiper blade.

[0003] However, when the wiper blade is replaced, if the wiper arm is forgotten to be returned from the locked position to the glass surface, after the wiper assembly is started again, the wiper arm will interfere with the rear edge of the hood, resulting in damage to both the wiper arm and the paint surface of the rear edge of the hood, affecting the appearance, and even affecting the service life of the wiper arm.

[0004] In addition, even if the wiper arm is returned to the glass, however, if there is an obstacle between the hood and the wiper arm, it will cause the wiper motor to stall, and will also damage the hood and the wiper arm, and at the same time will affect the service life of the wiper motor.

[0005] In addition, in rainy days, the wiper assembly generally works continuously. If a car accident occurs or there is a car accident ahead, the continuously working wiper arm will cause harm to the pedestrians in front. Summary of the Invention

[0006] The present invention aims to solve at least one of the above technical problems.

[0007] To solve the above problems, the present invention provides a safety protection device, including a protection main body, a sensing element, and a conductive member; the sensing element is used to be connected to a vehicle-mounted controller, the protection main body is used to be arranged at the rear edge of the engine hood, and a channel structure is arranged in the protection main body. One ends of the two conductive members are respectively connected to the two ends of the sensing element, and the other ends of the two conductive members are used to pass through the channel structure to be respectively connected to the positive and negative poles of the vehicle-mounted power supply; the protection main body is used to elastically deform under force, so that the two conductive members at the channel structure are in contact to short-circuit the sensing element.

[0008] The safety protection device provided by the present invention, compared with the prior art, has but is not limited to the following beneficial effects:

[0009] After the safety protection device is installed at the rear edge of the engine hood, when the wiper blade needs to be replaced or cleaned, the wiper arm needs to be set to the maintenance position, and then the wiper arm is lifted and self-locked. Since the wiper arm is lifted away from the glass surface at this time, the lifted wiper arm will squeeze the protection main body. The two conductive parts in the channel structure of the protection main body that are deformed by the extrusion will come into contact with each other, causing the induction element to short-circuit. The corresponding electrical parameters received by the vehicle-mounted controller will change, and then the vehicle-mounted controller can control the wiper motor of the wiper assembly to stop, ensuring that the wiper arm will not be started when it is not placed back on the glass surface, protecting the integrity of the wiper arm and the paint surface at the rear edge of the hood, and also avoiding damage to the service life of the wiper arm.

[0010] In addition, when the wiper arm is placed back on the glass, since the protection main body is located at the rear edge of the engine hood, the protection main body can be regarded as the rear edge of the engine hood. Even if there is an obstacle between the wiper arm and the protection main body, when the wiper arm moves, the force will be transmitted to the protection main body through the obstacle, and the protection main body will then deform, causing the induction element to short-circuit, and finally the vehicle-mounted controller will control the wiper motor to stop.

[0011] Moreover, in rainy days, the wiper assembly generally works continuously. If a car accident occurs or there is a car accident ahead, if an external object or pedestrian hits the protection main body, after the protection main body deforms, the vehicle controller will also control the wiper motor to stop, which can protect pedestrians and avoid the working wiper assembly from causing harm to pedestrians.

[0012] Furthermore, the induction element is a pressure induction element and is located in the channel structure.

[0013] Furthermore, the conductive part includes a first conductive part and a second conductive part. The first conductive part and the second conductive part are spaced apart and oppositely arranged on the inner wall of the channel structure. When the protection main body undergoes elastic deformation under force, the first conductive part is used to contact the second conductive part.

[0014] Furthermore, the cross-sectional shape of the first conductive part is an arc ring, the outer ring of the arc ring is connected to the inner wall of the channel structure, the cross-sectional shape of the second conductive part is a protrusion, one end of the protrusion is connected to the inner wall of the channel structure, and the other end of the protrusion is used to pass through the opening of the arc ring and enter the arc ring.

[0015] Furthermore, the first conductive part includes a first wire and a first coating layer, and the first coating layer is coated on the surface of the first wire;

[0016] The second conductive part includes a second wire and a second coating layer, and the second coating layer is coated on the surface of the second wire;

[0017] Among them, the materials of the first coating layer and the second coating layer are both conductive materials.

[0018] Further, the protection main body is in a strip structure, and the protection main body is used to extend from one end to the other end along the rear edge of the engine hood.

[0019] Further, the protection main body is provided with a clamping portion, and the protection main body is used to be clamped with the rear edge of the engine hood through the clamping portion; and / or, the protection main body is used to be bonded to the rear edge of the engine hood.

[0020] The present invention also provides a control method for a wiper assembly. Based on the safety protection device as described above, the control method for the wiper assembly includes:

[0021] When the protection main body of the safety protection device is elastically deformed under force, two conductive members inside the protection main body come into contact to cause a short circuit of the sensing element;

[0022] When the vehicle-mounted controller receives a calibration signal generated due to the short circuit of the sensing element, the vehicle-mounted controller controls the wiper motor to stop.

[0023] The present invention also provides a vehicle, including the safety protection device as described above.

[0024] Since the technical improvement and beneficial effects of the vehicle are the same as those of the safety protection device, the vehicle will not be elaborated herein.

[0025] Further, the engine hood of the vehicle includes a hood body and a hood trim, the hood trim is arranged at the rear edge of the hood body, and the protection main body of the safety protection device is arranged at the rear edge of the hood trim. Description of the Drawings

[0026] Figure 1 It is a cross-sectional schematic diagram of the safety protection device according to an embodiment of the present invention;

[0027] Figure 2 It is a cross-sectional schematic diagram of the assembly of the safety protection device and the hood trim according to an embodiment of the present invention;

[0028] Figure 3 It is a circuit diagram of the safety protection device according to an embodiment of the present invention;

[0029] Figure 4 It is an exploded schematic diagram of the structure at the engine hood of the vehicle according to an embodiment of the present invention.

[0030] Description of the Reference Numerals:

[0031] 1. Protection main body; 11. First card slot; 12. First card strip; 13. Channel structure; 2. Induction element; 3. First conductive member; 31. First wire; 32. First coating layer; 4. Second conductive member; 41. Second wire; 42. Second coating layer; 5. Engine hood; 51. Hood body; 52. Hood trim; 521. Second card slot; 522. Second card strip; 6. Wiper assembly; 7. Tape. Detailed implementation manners

[0032] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given in conjunction with the accompanying drawings.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0034] Moreover, in the accompanying drawings, the X-axis represents the longitudinal direction (corresponding to the driving direction of the vehicle), that is, the front-rear position, and the positive direction of the X-axis (that is, the arrow direction of the X-axis) represents the front, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the rear.

[0035] At the same time, it should be noted that the meaning represented by the foregoing X-axis is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0036] Refer to Figure 1 、 Figure 2 and Figure 4 , a safety protection device according to an embodiment of the present invention includes a protection main body 1, an induction element 2, and a conductive member; the protection main body 1 is used to be arranged at the rear edge of the engine hood 5, and a channel structure 13 is arranged in the protection main body 1; the induction element 2 is used to be connected to the vehicle-mounted controller; one ends of the two conductive members are respectively connected to the two ends of the induction element 2, and the other ends of the two conductive members are used to pass through the channel structure 13 to be respectively connected to the positive and negative poles of the vehicle-mounted power supply; the protection main body 1 is used to elastically deform under force, so that the two conductive members come into contact to short-circuit the induction element 2.

[0037] In this embodiment, after the safety protection device is installed at the rear edge of the engine hood 5, when the wiper blade needs to be replaced or cleaned, the wiper arm needs to be turned to the maintenance position, and then the wiper arm is lifted and locked. Since the wiper arm is lifted away from the glass surface at this time, the lifted wiper arm will then squeeze the protection body 1. The two conductive parts inside the protection body 1 that are deformed by the extrusion will come into contact with each other, thereby causing the induction element 2 to short-circuit, and the electrical parameters of the induction element 2 will change. Since the induction element 2 is connected to the vehicle-mounted controller, that is to say, the vehicle-mounted controller will receive the information of the change in the electrical parameters of the induction element 2, and then the vehicle-mounted controller can control the wiper motor of the wiper assembly 6 to stop (specifically, it can control the vehicle power supply to no longer supply power to the wiper motor, or control the switch of the wiper motor to disconnect), ensuring that the wiper arm will not be started when it is not placed back on the glass surface, protecting the integrity of the wiper arm and the paint on the rear edge of the hood, and also avoiding damage to the service life of the wiper arm.

[0038] It can be understood that when the wiper arm is placed back on the glass surface, at this time, since the protection body 1 is no longer squeezed, the protection body 1 will return to its original shape, thereby causing the two conductive parts inside the protection body 1 to no longer contact, and also causing the electrical parameters of the induction element 2 to return to normal. At this time, the vehicle-mounted controller no longer restricts the vehicle power supply to the wiper motor, or the vehicle-mounted controller controls the switch of the wiper motor to be connected. After that, the driver can start the wiper assembly 6 through the wiper lever, so that the wiper motor drives the wiper arm to move.

[0039] In addition, in the prior art, even if the wiper arm is placed back on the glass, however, if there is an obstacle between the hood and the wiper arm, it will cause the wiper motor to stall, which will also damage the hood and the wiper arm, and at the same time will also affect the service life of the wiper motor. In this embodiment, since the protection body 1 is located at the rear edge of the engine hood 5, the protection body 1 can be regarded as the rear edge of the engine hood 5. Even if there is an obstacle between the wiper arm and the protection body 1, when the wiper arm moves, the force will be transmitted to the protection body 1 through the obstacle, and the protection body 1 will then deform, causing the induction element 2 to short-circuit, and finally the vehicle-mounted controller controls the wiper motor to stop.

[0040] In addition, in rainy days, the wiper assembly 6 generally works continuously. If a car accident occurs or there is a car accident ahead, if an external object or pedestrian hits the protection body 1, after the protection body 1 deforms, the vehicle controller will also control the wiper motor to stop, which can protect pedestrians and avoid the working wiper assembly 6 from causing harm to pedestrians.

[0041] See Figure 3 , optionally, the induction element 2 can be a pressure induction element, such as a varistor.

[0042] In this embodiment, according to the characteristics of the varistor, when two conductive members come into contact and cause a short circuit, due to the change in the voltage across its two ends, the resistance value of the varistor will decrease significantly, such as from an initial value of 1000 Ω to 400 Ω. After the vehicle-mounted controller monitors the decrease in this electrical parameter of the resistance value, it controls the wiper motor to stop. When the protection main body 1 is not subjected to external force, the protection main body 1 returns to its original shape, thereby separating the two conductive members, and the resistance value of the varistor returns to the initial value. The vehicle-mounted controller then no longer restricts the stop limit of the wiper motor.

[0043] Of course, in other embodiments, the sensing element 2 can also be other electrical components, as long as an electrical parameter can change after the two conductive members come into contact, and the changed electrical parameter can return after the two conductive members are separated.

[0044] Optionally, the sensing element 2 is located in the channel structure 13, and the protection main body 1 can play a role in protecting the sensing element. Moreover, the sensing element 2, the protection main body 1, and the conductive members can be used as a whole for convenient disassembly and assembly.

[0045] See Figures 1-3 , optionally, the conductive members include a first conductive member 3 and a second conductive member 4. The first conductive member 3 and the second conductive member 4 are spaced apart and oppositely arranged on the inner wall of the channel structure 13. When the protection main body 1 undergoes elastic deformation under force, the first conductive member 3 is used to contact the second conductive member 4. It can be understood that when the protection main body 1 does not deform, there is a gap between the first conductive member 3 and the second conductive member 4. After the protection main body deforms, the first conductive member 3 and the second conductive member 4 inside will come into contact.

[0046] Optionally, the cross-sectional shape of the first conductive member 3 is an arc-shaped ring, the outer ring of the arc-shaped ring is connected to the inner wall of the channel structure 13, one end of the cross-sectional shape of the second conductive member 4 is connected to the inner wall of the channel structure 13, and the other end of the cross-sectional shape of the second conductive member 4 extends into the opening of the arc-shaped ring.

[0047] In this embodiment, the cross-sectional shape of the first conductive member 3 is an arc-shaped ring, and the cross-sectional shape of the second conductive member 4 is a protrusion. One end of the protrusion and the outer ring of the arc-shaped ring are respectively connected to the inner wall of the channel structure 13 to ensure that the protection main body 1 can drive the two conductive members to move. The other end of the protrusion passes through the opening of the arc-shaped ring and enters the arc-shaped ring, just like Figure 1 and Figure 2 shown. In this way, no matter which direction the protection main body 1 is stressed, it will drive the first conductive member 3 and the second conductive member 4 to come into contact.

[0048] See Figure 1 and Figure 2, optionally, the first conductive member 3 includes a first wire 31 and a first coating layer 32, and the first coating layer 32 is coated on the surface of the first wire 31;

[0049] The second conductive member 4 includes a second wire 41 and a second coating layer 42, and the second coating layer 42 is coated on the surface of the second wire 41;

[0050] Wherein, the materials of the first coating layer 32 and the second coating layer 42 are both conductive materials.

[0051] In this embodiment, the first conductive member 3 includes a first wire 31 (a wire after removing the insulation layer) and a first coating layer 32. The first coating layer 32 is made of a conductive material. After the first coating layer 32 is coated on the first wire 31, the first conductive member 3 is formed; the second conductive member 4 includes a second wire 41 (also a wire after removing the insulation layer) and a second coating layer 42. The second coating layer 42 is also made of a conductive material. After the second coating layer 42 is coated on the second wire 41, the second conductive member 4 is formed.

[0052] It can be understood that the material of the protection main body 1 is an insulating material. At the same time, since the protection main body 1 needs to have the ability of certain elastic deformation, therefore, the material of the protection main body 1 can be rubber material, foam material, etc., and rubber material is preferred.

[0053] See Figure 4 , optionally, the protection main body 1 is in a strip structure, and the protection main body 1 is used to extend from one end of the rear edge of the engine hood 5 to the other end of the rear edge of the engine hood 5.

[0054] In this embodiment, if the protection main body 1 is in a strip structure, it can be arranged from one end of the rear edge of the engine hood 5 to the other end, maximizing the protection effect.

[0055] See Figure 3 , optionally, the sensing element 2 is arranged at one end of the channel structure 13, and the two conductive members are used to extend out from the other end of the channel structure 13.

[0056] In this embodiment, since the sensing element 2 is arranged at one end position of the channel structure 13, and the two conductive members both extend out from the other end of the channel structure 13, in this way, it can be ensured that the length of the contact between the two conductive members reaches the maximum, that is, no matter which position in the length direction of the protection main body 1 is squeezed, the two conductive members will be in contact.

[0057] See Figure 1 and Figure 2, optionally, the protection body 1 is provided with a clamping portion, and the protection body 1 is used to be clamped with the rear edge of the engine hood 5 through the clamping portion; and / or, the protection body 1 is used to be adhesively bonded to the rear edge of the engine hood 5.

[0058] In this embodiment, the protection body 1 can be clamped and fixed to the rear edge of the engine hood 5 through the clamping portion. Specifically, the protection body 1 is provided with a first card slot 11, and the first card slot 11 can be clamped with the rear edge of the engine hood 5. There can be two first card slots 11, and a first card strip 12 is formed between the two first card slots 11. The rear edge of the engine hood 5 is provided with a second card slot 521, and the first card strip 12 is used to be inserted into the second card slot 521. The rear edge of the engine hood 5 can also be used as a second card strip 522 and be inserted into the first card slot 11 at the same time. A tape 7 can be provided on the inner wall of the first card slot 11. While completing the clamping, the tape 7 is also adhesively bonded to the side surface of the rear edge of the engine hood 5, making the connection more firm.

[0059] Another embodiment of the present invention further provides a control method for a wiper assembly. Based on the safety protection device as described above, the control method for the wiper assembly 6 includes:

[0060] When the protection body 1 of the safety protection device is elastically deformed under force, the two conductive members inside the protection body 1 come into contact and cause the induction element 2 to short-circuit;

[0061] When the vehicle-mounted controller receives the calibration signal generated by the short-circuit of the induction element 2, the vehicle-mounted controller controls the wiper motor to stop.

[0062] Among them, the vehicle-mounted controller controlling the wiper motor to stop can be to control the vehicle-mounted power supply to no longer supply power to the wiper motor, or to control the switch of the wiper motor to be turned off. When the induction element 2 is a varistor, the calibration signal refers to the signal corresponding to the reduced resistance value.

[0063] Another embodiment of the present invention further provides a vehicle, including the safety protection device as described above.

[0064] Since the technical improvements and beneficial effects of the vehicle are the same as those of the safety protection device, the vehicle will not be elaborated herein.

[0065] See Figure 2 and Figure 4 , optionally, the engine hood 5 of the vehicle includes a hood body 51 and a hood trim 52. The hood trim 52 is provided at the rear edge of the hood body 51, and the protection body 1 of the safety protection device is provided at the rear edge of the hood trim 52.

[0066] In this embodiment, the protection main body is specifically installed at the rear edge of the hood trim. The hood trim plays a decorative role, and at the same time, it is joined and continued with the hood body to cover many areas not covered by the hood body, making the ventilation cover plate area under the hood body a harmless safety area.

[0067] The terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of the features.

[0068] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A safety protection device, characterized in that, It includes a protection body (1), a sensing element (2) and a conductive member; the sensing element (2) is used to connect to a vehicle-mounted controller, the protection body (1) is used to be arranged at the rear edge of the engine hood (5), and a channel structure (13) is arranged in the protection body (1). One ends of the two conductive members are respectively connected to two ends of the sensing element (2), and the other ends of the two conductive members are used to pass through the channel structure (13) to be respectively connected to the positive and negative poles of the vehicle-mounted power supply; the protection body (1) is used to elastically deform under force so that the two conductive members at the channel structure (13) contact to short-circuit the sensing element (2); the conductive member includes a first conductive member (3) and a second conductive member (4). When the protection body (1) elastically deforms under force, the first conductive member (3) is used to contact the second conductive member (4); when the vehicle-mounted controller receives a calibration signal generated by the short circuit of the sensing element (2), the vehicle-mounted controller controls the wiper motor to stop.

2. The safety protection device according to claim 1, wherein The sensing element (2) is a pressure sensing element and is located in the channel structure (13).

3. The safety protection device according to claim 1, characterized in that, The first conductive member (3) and the second conductive member (4) are arranged at intervals and oppositely on the inner wall of the channel structure (13).

4. The safety protection device according to claim 3, wherein The cross-sectional shape of the first conductive member (3) is an arc-shaped ring, the outer ring of the arc-shaped ring is connected to the inner wall of the channel structure (13), the cross-sectional shape of the second conductive member (4) is a protrusion, one end of the protrusion is connected to the inner wall of the channel structure (13), and the other end of the protrusion is used to pass through the opening of the arc-shaped ring and enter the arc-shaped ring.

5. The safety protection device according to claim 3, characterized in that, The first conductive member (3) includes a first wire (31) and a first coating layer (32), and the first coating layer (32) is coated on the surface of the first wire (31); the second conductive member (4) includes a second wire (41) and a second coating layer (42), and the second coating layer (42) is coated on the surface of the second wire (41); wherein, the materials of the first coating layer (32) and the second coating layer (42) are both conductive materials.

6. The safety protection device according to claim 1, characterized in that The protection body (1) is a strip-shaped structure, and the protection body (1) is used to extend from one end to the other end along the rear edge of the engine hood (5).

7. The safety protection device according to claim 1, wherein The protection body (1) is provided with a clamping portion, and the protection body (1) is used to be clamped to the rear edge of the engine hood (5) through the clamping portion; and / or, the protection body (1) is used to be adhesively bonded to the rear edge of the engine hood (5).

8. A control method for a windshield wiper assembly, based on the safety protection device according to any one of claims 1-7, characterized in that, The control method of the wiper assembly includes: When the protection body (1) of the safety protection device elastically deforms under force, the two conductive members inside the protection body (1) contact to short-circuit the sensing element (2); When the vehicle-mounted controller receives a calibration signal generated by the short circuit of the sensing element (2), the vehicle-mounted controller controls the wiper motor to stop.

9. A vehicle, characterized in that, It includes the safety protection device according to any one of claims 1-7.

10. The vehicle according to claim 9, characterized in that, The engine hood (5) of the vehicle includes a hood body (51) and a hood trim (52). The hood trim (52) is disposed at the rear edge of the hood body (51), and the protection main body (1) of the safety protection device is disposed at the rear edge of the hood trim (52).

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