All-wheel-drive vehicle high-low gear switch control system

Abstract

The utility model discloses a high-low gear switch control system for an all-wheel-drive vehicle. A control loop comprises a switch; the man-machine terminal drives the switch in the control loop; wherein the man-machine terminal comprises fan-shaped clad copper and a short circuit; the fan-shaped clad copper comprises first fan-shaped clad copper and second fan-shaped clad copper; one switch in the control loop is driven to be closed according to the fact that the two ends of the short-circuit sub are in contact connection with a group of first fan-shaped clad copper and second fan-shaped clad copper; the switch in the control loop is driven to be switched off according to the fact that at least one end of the transition of the first fan-shaped copper clad and the second fan-shaped copper clad from the two ends of the short circuit is not in contact connection with the first fan-shaped copper clad or the second fan-shaped copper clad; wherein the switch comprises a first switch and a second switch; the A end of the first switch and the A end of the second switch are jointly connected with a corresponding piece of first fan-shaped coated copper; the B end of the first switch and the B end of the second switch are connected with the two corresponding second fan-shaped copper clad plates respectively. Wherein the first fan-shaped clad copper is connected with a power supply V-.

Description

Technical Field

[0001] The present application relates to the field of switch control, and in particular to a high and low gear switch control system for an all-wheel drive vehicle. Background Art

[0002] At present, the preset functions of automobile function switches cannot meet the continuous needs of customers. The phenomenon of pre-designed instrument function switches being insufficient often occurs. Because the cost of developing a cab is very high, the design of the interior of a car's cockpit instrument panel function switches and other interior designs will generally be used for 3-5 years, and some will even be used for 5-10 years.

[0003] When the switch functions are not enough, the functions of two independently controlled switches with similar functions can be integrated into one switch for control. By changing the internal circuit design of the switch and fine-tuning the external dimensions of the switch, it can still be installed in the original installation hole. This greatly improves R&D efficiency and shortens the development cycle. It also saves the company the cost of re-issuing the mold for the switch panel of the dashboard in the cab, which is of great significance to the development of the company.

[0004] However, adding more human-computer interactions and corresponding more functions in the limited space requires adding more wiring harnesses and switches.

[0005] Chinese patent CN202022229969.X discloses a high- and low-gear conversion switch for heavy trucks, which is mainly designed to solve the problem that the high- and low-gear conversion switch components are easy to loosen when the driver switches between high and low gears, and accidents occur when switching between high and low gears, causing damage to the gearbox gears. However, this is switched by manual shifting, which is still relatively difficult to operate and is not very practical.

[0006] Chinese patent CN201910740129.9 discloses a manual gear control mechanism capable of transmitting high and low gear signals. The main function is to identify the current gear state of the vehicle through the signal information on the gear selection arm transmitted by the built-in high and low gear switching switch and the Hall sensor. However, the use of sensors is increased, thereby invisibly increasing the production cost, and it cannot be put into production and use well.

[0007] Therefore, the present application aims to solve the problem of high and low gear switch control of an all-wheel drive vehicle. A compact and flexible high and low gear switch human-machine terminal is designed based on the limited space in the original cab, and an adaptive design is made for the control circuit and the gas circuit. Utility Model Content

[0008] The utility model aims to provide a high and low gear switch control system for an all-wheel drive vehicle, which at least solves the above-mentioned problem of high and low gear switch control for an all-wheel drive vehicle and fully utilizes the original operating table holes.

[0009] The present utility model provides the following solution:

[0010] According to one aspect of the present utility model, there is provided a high and low gear switch control system for an all-wheel drive vehicle, and the high and low gear switch control system for the all-wheel drive vehicle includes: a human-machine terminal and a control circuit;

[0011] The control circuit includes a switch;

[0012] The human-machine terminal drives the switch in the control circuit;

[0013] Among them, the human-machine terminal includes a sector-shaped copper-clad and a short-circuiting element;

[0014] The sector-shaped copper-clad includes a first sector-shaped copper-clad and a second sector-shaped copper-clad;

[0015] According to the short-circuiting element contacting and connecting a group of the first sector-shaped copper-clad and the second sector-shaped copper-clad at both ends, one switch in the control circuit is driven to close;

[0016] According to the short-circuiting element contacting and connecting the group of the first sector-shaped copper-clad and the second sector-shaped copper-clad at both ends and then transitioning to at least one end not contacting and connecting with the first sector-shaped copper-clad or the second sector-shaped copper-clad, the switch in the control circuit is driven to disconnect;

[0017] Among them, the switch includes a first switch and a second switch;

[0018] The A end of the first switch and the A end of the second switch are commonly connected to a corresponding piece of the first sector-shaped copper-clad;

[0019] The B end of the first switch and the B end of the second switch are respectively connected to two corresponding pieces of the second sector-shaped copper-clad;

[0020] Among them, the first sector-shaped copper-clad is connected to the power supply V-;

[0021] Further, the control circuit further includes: a first relay, a second relay, and a third relay;

[0022] The coil of the first relay is connected in series with the first switch;

[0023] The coil of the third relay is connected in series with the second switch;

[0024] The coil of the third relay is connected in parallel with the coil of the second relay;

[0025] The switch contact of the second relay is connected in parallel with the switch contact of the first switch;

[0026] According to the conduction of the first switch or the conduction of the contact of the second relay, the A end of the coil of the first relay is connected to the power supply V-;

[0027] According to the conduction of the second switch, the A terminal of the wire coil of the third relay and the A terminal of the wire coil of the second relay are connected to the power supply V-.

[0028] The B terminals of the wire coils of the first relay, the second relay, and the third relay have a common terminal, which is connected to the power supply V+.

[0029] Further, it further includes: a first solenoid valve and a second solenoid valve;

[0030] The wire coil of the first solenoid valve is connected in series with the contact of the first relay;

[0031] The wire coil of the second solenoid valve is connected in series with the contact of the third relay;

[0032] According to the conduction of the open contact of the first relay, the A terminal of the wire coil of the first solenoid valve is connected to the power supply V+;

[0033] According to the conduction of the switch contact of the second relay, the A terminal of the wire coil of the second solenoid valve is connected to the power supply V+;

[0034] The B terminals of the wire coils of the first solenoid valve and the second solenoid valve have a common terminal, which is connected to the power supply V-.

[0035] Further, the human-machine terminal includes a first housing and a roller assembly;

[0036] The first housing is a hollow cylinder;

[0037] A shaft hole is provided on the inner wall of the A side of the first housing;

[0038] The roller assembly is installed inside the first housing. The wheel shaft on the B side of the roller assembly extends out and is connected to the bushing on the inner wall of the A side of the first housing, and the A side of the roller assembly is connected to the inner wall of the B side of the first housing;

[0039] There are through holes at the top and bottom of the first housing. The roller assembly includes a roller, and the outer contour of the roller is exposed from the top through hole;

[0040] The roller assembly includes a PCB substrate, and the PCB substrate includes pads and contacts;

[0041] The contacts are connected to the fan-shaped copper cladding, and the pads are connected to the wire harness;

[0042] The wire harness enters and exits from the bottom of the first housing, and is connected to the relay and the solenoid valve to form a control circuit.

[0043] Further, the roller assembly further includes: a second housing, a short circuit element, a gear position substrate, a gear position spring, and a pressing piece;

[0044] The A side and the B side of the gear position substrate are respectively provided with a wheel shaft;

[0045] Starting from the inner wall of the first housing A and ending at the inner wall of the first housing B, the roller assembly coaxially arranges a PCB substrate, a second housing, a short circuit element, a gear position substrate, a gear position spring, a pressing piece, and a roller in sequence.

[0046] Furthermore, the roller assembly further includes:

[0047] The second housing is provided with a shaft hole and is connected to the wheel shaft bushing on the A surface of the gear position substrate;

[0048] The A surface of the PCB substrate is connected to the inner wall of the first housing B;

[0049] The B surface of the PCB substrate is connected to the A side of the second housing;

[0050] On the B side of the second housing, a plurality of mutually insulated fan-shaped copper clads are arranged centered on the shaft hole;

[0051] The roller is provided with a shaft hole;

[0052] The wheel shaft on the B surface of the gear position substrate passes through the shaft hole provided on the roller and is fixedly connected, and the wheel shaft on the B surface of the gear position substrate is connected to the inner wall bushing of the first housing A.

[0053] Furthermore, the roller assembly further includes:

[0054] The B surface of the short circuit element is connected to the A surface of the gear position substrate;

[0055] One end of the A surface of the short circuit element is in contact connection with the first fan-shaped copper clad, and the other end is in contact connection with the second fan-shaped copper clad;

[0056] The roller drives the gear position substrate to rotate, so that the short circuit element changes to be in contact connection with one of a plurality of second fan-shaped copper clads, forming a conduction or disconnection state of the switch corresponding to the second fan-shaped copper clad.

[0057] Furthermore, the roller assembly further includes:

[0058] The edge of the pressing piece is fixedly connected to the edge of the second housing;

[0059] A movable gap is reserved between the A side of the pressing piece and the B side of the second housing;

[0060] The B side of the gear position spring is fixedly connected to the A side of the pressing piece,

[0061] The A side of the gear position spring is provided with an elastic protrusion;

[0062] On the B surface of the gear position substrate, gear position grooves are arranged in a fan shape centered on the wheel shaft of the gear position substrate;

[0063] The elastic protrusion on the A side of the gear position spring corresponds to the gear position groove on the B surface of the gear position substrate;

[0064] The roller drives the gear substrate to rotate, and the elastic protrusion on the A side of the gear spring passes over the gear groove on the B surface of the gear substrate;

[0065] Wherein, a through hole is provided between the gear spring and the pressing piece;

[0066] The wheel axle on the B surface of the gear substrate passes through the through hole.

[0067] Furthermore, the roller assembly further includes:

[0068] The roller drives the gear substrate to rotate, so that the short-circuiting element is changed to be in contact connection with one of a plurality of second sector-shaped copper claddings, forming a conducting or non-conducting state of the switch corresponding to the second sector-shaped copper cladding, and setting the relative position when the elastic protrusion on the A side of the gear spring passes over the gear groove on the B surface of the gear substrate;

[0069] According to the relative position when the elastic protrusion on the A side of the gear spring passes over the gear groove on the B surface of the gear substrate, the state that the elastic protrusion on the A side of the gear spring sinks into one of the gear grooves on the B surface of the gear substrate corresponds to a conducting state of a switch loop;

[0070] According to the state that the elastic protrusion on the A side of the gear spring sinks into one of the gear grooves on the B surface of the gear substrate corresponding to a conducting state of a switch loop, setting the stroke range of the roller.

[0071] Furthermore, it further includes:

[0072] According to the A end of the first switch and the A end of the second switch being commonly connected to correspond to a piece of first sector-shaped copper cladding and the stroke range of the roller, setting the coverage area of the first sector-shaped copper cladding;

[0073] The roller is painted with a mark, and the first housing is painted with characters;

[0074] According to the state that the elastic protrusion on the A side of the gear spring sinks into one of the gear grooves on the B surface of the gear substrate corresponding to a conducting state of a switch loop, the mark painted on the roller is aligned with the characters painted on the first housing.

[0075] By the above solution, the following beneficial technical effects are obtained:

[0076] In this application, by providing a roller on the plug-in component at a hole position of an operating table, the operating table can increase the control function without adding new hole positions, reducing the expenditure on mold costs.

[0077] In this application, by integrating the control end of the driving mode, the control operation for the vehicle to change the driving mode is simple and intuitive. Description of the Drawings

[0078] Figure 1 It is a structural diagram of a high - low gear switch control system for an all - wheel drive vehicle provided by one or more embodiments of the present utility model.

[0079] Figure 2 It is a schematic diagram of the appearance of a human - machine terminal of a high - low gear switch control system for an all - wheel drive vehicle provided by one or more embodiments of the present utility model.

[0080] Figure 3 It is an exploded view of a roller assembly of a high - low gear switch control system for an all - wheel drive vehicle provided by one or more embodiments of the present utility model.

[0081] Figure 4 It is a schematic diagram of a PCB board of a high - low gear switch control system for an all - wheel drive vehicle provided by one or more embodiments of the present utility model.

[0082] Figure 5 It is a schematic diagram of the switch function of a high - low gear switch control system for an all - wheel drive vehicle provided by one or more embodiments of the present utility model.

[0083] Figure 6 It is a schematic diagram of the control circuit of a high - low gear switch control system for an all - wheel drive vehicle provided by one or more embodiments of the present utility model.

[0084] Figure 7 It is a schematic diagram of a second housing of a high - low gear switch control system for an all - wheel drive vehicle provided by one or more embodiments of the present utility model.

[0085] Figure 8 It is a schematic diagram of the circuit of an integrated all - wheel drive high - low gear switch control of a specific embodiment of the present utility model.

[0086] Figure 9 It is a schematic diagram of the gear position and pin design inside the switch of a specific embodiment of the present utility model.

[0087] Reference numerals of the drawings:

[0088] 1. First housing; 2. Roller; 3. PCB substrate; 4. Pad; 5. Second housing; 6. Short - circuit connector; 7. Gear position substrate; 8. Gear position spring; 9. Pressure piece; 10. Sector - shaped copper - clad; 11. Elastic protrusion; 12. Gear position groove; 13. First switch; 14. Second switch; 15. First relay; 16. Second relay; 17. Third relay; 18. First solenoid valve; 19. Second solenoid valve;

[0089] First sector - shaped copper - clad 101; Second sector - shaped copper - clad 102. Detailed implementation manners

[0090] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0091] Figure 1 It is a structural diagram of a high and low gear switch control system for an all-wheel drive vehicle provided by one or more embodiments of the present utility model.

[0092] Figure 2 It is a schematic diagram of the appearance of a human-machine terminal of a high and low gear switch control system for an all-wheel drive vehicle provided by one or more embodiments of the present utility model.

[0093] Figure 3 It is a disassembled schematic diagram of a roller assembly of a high and low gear switch control system for an all-wheel drive vehicle provided by one or more embodiments of the present utility model.

[0094] Figure 4 It is a schematic diagram of a PCB board of a high and low gear switch control system for an all-wheel drive vehicle provided by one or more embodiments of the present utility model.

[0095] Figure 5 It is a schematic diagram of the switch function of a high and low gear switch control system for an all-wheel drive vehicle provided by one or more embodiments of the present utility model.

[0096] Figure 6 It is a schematic diagram of a control circuit of a high and low gear switch control system for an all-wheel drive vehicle provided by one or more embodiments of the present utility model.

[0097] Figure 7 It is a schematic diagram of a second housing of a high and low gear switch control system for an all-wheel drive vehicle provided by one or more embodiments of the present utility model.

[0098] As Figure 1 、 2 、shown in 3, the high and low gear switch control system for an all-wheel drive vehicle includes: a human-machine terminal and a control circuit;

[0099] The control circuit includes a switch;

[0100] The human-machine terminal drives the switch in the control circuit;

[0101] Among them, the human-machine terminal includes a fan-shaped copper-clad and a short-circuiting sub 6;

[0102] The fan-shaped copper-clad includes a first fan-shaped copper-clad 101 and a second fan-shaped copper-clad 102;

[0103] According to the connection of a group of first sector copper clads 101 and second sector copper clads 102 in contact at both ends of the short-circuiting sub 6, a switch in the drive control circuit is closed;

[0104] According to the transition of the two ends of the short-circuiting sub 6 from being in contact connection with this group of first sector copper clads 101 and second sector copper clads 102 to at least one end not being in contact connection with the first sector copper clad 101 or the second sector copper clad 102, the switch in the drive control circuit is disconnected;

[0105] Among them, the switch includes a first switch 13 and a second switch 14;

[0106] The A end of the first switch 13 and the A end of the second switch 14 are commonly connected to a corresponding first sector copper clad 101;

[0107] The B end of the first switch 13 and the B end of the second switch 14 are respectively connected to two corresponding second sector copper clads 102;

[0108] Among them, the first sector copper clad 101 is connected to the power supply V-.

[0109] Specifically, the human-machine terminal belongs to the switch in the control circuit. The control end of the human-machine terminal is the roller 2. By rotating the roller 2, the short-circuiting sub 6 is driven to change the connection or disconnection state with the first sector copper clad 101 and the second sector copper clad 102, forming a switch function.

[0110] The connection between the short-circuiting sub 6 and the sector copper clad is an electrical connection, and the short-circuiting sub 6 is driven to slide on the sector copper clad by rotating the roller 2.

[0111] One first sector copper clad 101 and one second sector copper clad 102 form the first switch 13, and one first sector copper clad 101 and another second sector copper clad 102 form the second switch 14. The first sector copper clad 101 is equivalent to the common end of the first switch 13 and the second switch 14, and the two switches share one short-circuiting sub 6. By the short-circuiting sub 6, the first sector copper clad 101 and the second sector copper clad 102 belonging to the first switch 13, and the first sector copper clad 101 and the second sector copper clad 102 belonging to the second switch 14 are respectively connected. At the same moment, only the first switch 13 is in the conducting state, or only the second switch 14 is in the conducting state, or both switches are not in the conducting state.

[0112] In this embodiment, the control circuit further includes: a first relay 15, a second relay 16, and a third relay 17;

[0113] The coil of the first relay 15 is connected in series with the first switch 13;

[0114] The coil of the third relay 17 is connected in series with the second switch 14;

[0115] The coil of the third relay 17 is connected in parallel with the coil of the second relay 16;

[0116] The switch contacts of the second relay 16 are in parallel with the switch contacts of the first switch 13;

[0117] According to the conduction of the first switch 13 or the conduction of the contacts of the second relay 16, the A terminal of the coil of the first relay 15 is connected to the power supply V-;

[0118] According to the conduction of the second switch 14, the A terminal of the coil of the third relay 17 and the A terminal of the coil of the second relay 16 are connected to the power supply V-;

[0119] The B terminals of the coils of the first relay 15, the second relay 16, and the third relay 17 have a common terminal, which is connected to the power supply V+.

[0120] Specifically, the first relay 15, the second relay 16, and the third relay 17 act as signal relays for switches to control the first solenoid valve 18 and the second solenoid valve 19.

[0121] Through the circuit connection where the coil of the first relay 15 is in series with the first switch 13, the coil of the third relay 17 is in series with the second switch 14, the coil of the third relay 17 is in parallel with the coil of the second relay 16, and the switch contacts of the second relay 16 are in parallel with the switch contacts of the first switch 13, the first switch 13 controls the connection of the coil of the first relay 15 to the power supply V-. Similarly, the second switch 14 controls the connection of the A terminal of the coil of the third relay 17 and the A terminal of the coil of the second relay 16 to the power supply V-. The B terminals of the coils of the first relay 15, the second relay 16, and the third relay 17 have a common terminal, which is connected to the power supply V+. When their A terminals are connected to the power supply V-, the relay contacts are conducted, realizing the function of indirectly controlling the solenoid valve.

[0122] Such as Figure 4 、 5 、6, 7 show that in this embodiment, it further includes: a first solenoid valve 18 and a second solenoid valve 19;

[0123] The coil of the first solenoid valve 18 is in series with the contacts of the first relay 15;

[0124] The coil of the second solenoid valve 19 is in series with the contacts of the third relay 17;

[0125] According to the conduction of the open contacts of the first relay 15, the A terminal of the coil of the first solenoid valve 18 is connected to the power supply V+;

[0126] According to the conduction of the switch contacts of the second relay 16, the A terminal of the coil of the second solenoid valve 19 is connected to the power supply V+;

[0127] The B terminal of the wire coil of the first solenoid valve 18 and the B terminal of the wire coil of the second solenoid valve 19 have a common terminal, which is connected to the power supply V-.

[0128] Specifically, the B terminal of the wire coil of the first solenoid valve 18 and the B terminal of the wire coil of the second solenoid valve 19 have a common terminal, which is connected to the power supply V-. The A terminal of the wire coil of the first solenoid valve 18 and the A terminal of the wire coil of the second solenoid valve 19 are respectively controlled by the open contact of the first relay 15 and the switch contact of the second relay 16.

[0129] In this embodiment, the human-machine terminal includes a first housing 1 and a roller assembly;

[0130] The first housing 1 is a hollow cylinder;

[0131] The inner wall of the first housing 1A is provided with a shaft hole;

[0132] The roller assembly is mounted inside the first housing 1. The wheel shaft on the B side of the roller assembly extends out and is connected to the bushing on the inner wall of the first housing 1A. The A side of the roller assembly is connected to the inner wall of the first housing 1B;

[0133] There are through holes at the top and bottom of the first housing 1. The roller assembly includes a roller 2, and the outer contour of the roller 2 is exposed from the top through hole;

[0134] The roller assembly includes a PCB substrate 3, and the PCB substrate 3 includes pads 4 and contacts;

[0135] The contacts are connected to the fan-shaped copper cladding, and the pads 4 are connected to the wire harness;

[0136] The wire harness enters and exits from the bottom of the first housing 1 and is connected to the relay and the solenoid valve to form a control circuit.

[0137] Specifically, there are circuits on the PCB substrate 3, and pads and contacts are provided for connection with the wire harness and the copper cladding, so as to combine switches, relays, and solenoid valves into a circuit.

[0138] The inner wall of the first housing 1A is provided with a shaft hole. The inner wall of the first housing 1B is not provided with a shaft hole, but is connected to a second housing 5. The second housing 5 has a shaft hole, so that the roller 2 can be mounted between the two shaft holes and connected by a bushing.

[0139] Among them, the second housing 5 is indirectly fixed to the inner wall of the first housing 1 through the PCB substrate 3. The A side of the PCB substrate 3 is connected to the inner wall of the first housing 1B; the B side of the PCB substrate 3 is connected to the A side of the second housing 5. The fan-shaped copper cladding is arranged on the B side of the second housing 5, and the contacts of the PCB substrate 3 are connected to the fan-shaped copper cladding through the through holes of the second housing 5.

[0140] In this embodiment, the roller assembly further includes: a second housing 5, a short circuit sub 6, a gear position substrate 7, a gear position spring 8, and a pressing piece 9;

[0141] The 7A side and the 7B side of the gear position substrate are respectively provided with axles.

[0142] Starting from the inner wall of the first housing 1A to the inner wall of the first housing 1B, the roller assembly is coaxially arranged with a PCB substrate 3, a second housing 5, a short-circuiting element 6, a gear position substrate 7, a gear position spring 8, a pressing piece 9, and a roller 2 in sequence.

[0143] Specifically, starting from the inner wall of the first housing 1A to the inner wall of the first housing 1B, the roller assembly is coaxially arranged with a PCB substrate 3, a second housing 5, a short-circuiting element 6, a gear position substrate 7, a gear position spring 8, a pressing piece 9, and a roller 2 in sequence. Among them, with the axle of the gear position substrate 7 as a reference, other components are provided with via holes or connection holes.

[0144] Among them, the PCB substrate 3, the second housing 5, the gear position spring 8, and the pressing piece 9 are directly or indirectly fixedly connected to the first housing 1, and the short-circuiting element 6, the gear position substrate 7, and the roller 2 are directly or indirectly fixedly connected.

[0145] Elastic contact is made between the two sets of fixing components through the elastic contact between the short-circuiting element 6 and the gear position substrate 7, and elastic contact is made between the short-circuiting element 6 and the copper coating on the second housing 5.

[0146] In this embodiment, the roller assembly further includes:

[0147] The second housing 5 is provided with an axle hole and is axially sleeved with the axle of the 7A side of the gear position substrate;

[0148] The 3A side of the PCB substrate 3 is connected to the inner wall of the first housing 1B;

[0149] The 3B side of the PCB substrate 3 is connected to the A side of the second housing 5;

[0150] On the B side of the second housing 5, a plurality of mutually insulated sector-shaped copper coatings 10 are arranged centered on the axle hole;

[0151] The roller 2 is provided with an axle hole;

[0152] The axle of the 7B side of the gear position substrate passes through the axle hole provided in the roller 2 and is fixedly connected, and the axle of the 7B side of the gear position substrate is axially sleeved with the inner wall of the first housing 1A.

[0153] Specifically, the roller 2 is provided with an axle hole, the axle of the 7B side of the gear position substrate passes through the axle hole provided in the roller 2 and is fixedly connected, the axle of the 7B side of the gear position substrate is axially sleeved with the inner wall of the first housing 1A, and the short-circuiting element 6 and the gear position substrate 7 rotate along with the roller 2 under the axial sleeve connection of the axle hole on the inner wall of the first housing 1A and the axle hole of the second housing 5.

[0154] In this embodiment, the roller assembly further includes:

[0155] The 6B side of the short-circuiting element 6 is connected to the 7A side of the gear position substrate;

[0156] One end of the short circuit connector 6 contacts and connects to the first fan-shaped copper-clad 101 on the A side, and the other end contacts and connects to the second fan-shaped copper-clad 102.

[0157] The roller 2 drives the gear substrate 7 to rotate, causing the short circuit connector 6 to change and contact and connect to one of the multiple second fan-shaped copper-clads 102, forming the on or off state of the switch corresponding to the second fan-shaped copper-clad 102.

[0158] Specifically, the roller 2 drives the gear substrate 7 to rotate, causing the short circuit connector 6 to change and contact and connect to one of the multiple second fan-shaped copper-clads 102, forming the on or off state of the switch corresponding to the second fan-shaped copper-clad 102. For example, if there are two second fan-shaped copper-clads 102, it forms the on or off state of the first switch 13 or the second switch 14.

[0159] In this embodiment, the roller assembly further includes:

[0160] The edge of the pressing piece 9 is fixedly connected to the edge of the second housing 5;

[0161] A movable gap is reserved between the A side of the pressing piece 9 and the B side of the second housing 5;

[0162] The B side of the gear spring 8 is fixedly connected to the A side of the pressing piece 9,

[0163] The A side of the gear spring 8 is provided with an elastic protrusion 11;

[0164] The gear grooves 12 are fan-shapedly arranged on the B side of the gear substrate 7 with the wheel shaft of the gear substrate 7 as the center;

[0165] The elastic protrusion 11 on the A side of the gear spring 8 corresponds to the gear grooves 12 on the B side of the gear substrate 7;

[0166] According to the rotation of the roller 2 driving the gear substrate 7, the elastic protrusion 11 on the A side of the gear spring 8 passes over the gear grooves 12 on the B side of the gear substrate 7;

[0167] Among them, a through hole is provided between the gear spring 8 and the pressing piece 9;

[0168] The wheel shaft on the B side of the gear substrate 7 passes through the through hole.

[0169] Specifically, in order to stabilize the on or off state of the first switch 13 and the second switch 14, a gear groove 12 is arranged in a fan shape on the surface of the gear substrate 7B with the axle center of the gear substrate 7 as the center. As the roller 2 drives the gear substrate 7 to rotate, the elastic protrusion 11 on the side of the gear spring 8A passes over the gear groove 12 on the surface of the gear substrate 7B. When the elastic protrusion 11 falls into the gear groove 12, it is the moment when the position state is stable. Corresponding to the elastic protrusion 11 falling into the gear groove 12, the short-circuiting element is made to conduct to connect the second sector-shaped copper coating 102 representing the first switch 13 and the common point first sector-shaped copper coating 101. Similarly, on another gear groove 12, corresponding to the elastic protrusion 11 falling into the gear groove 12, the short-circuiting element is made to conduct to connect the second sector-shaped copper coating 102 representing the second switch 14 and the common point first sector-shaped copper coating 101.

[0170] In this embodiment, the roller assembly further includes:

[0171] As the roller 2 drives the gear substrate 7 to rotate, the short-circuiting element 6 is changed to contact and connect with one of the multiple second sector-shaped copper coatings 102, forming the on or off state of the switch corresponding to the second sector-shaped copper coating 102, and setting the relative position when the elastic protrusion 11 on the side of the gear spring 8A passes over the gear groove 12 on the surface of the gear substrate 7B;

[0172] According to the relative position when the elastic protrusion 11 on the side of the gear spring 8A passes over the gear groove 12 on the surface of the gear substrate 7B, the state of the elastic protrusion 11 on the side of the gear spring 8A falling into one of the gear grooves 12 on the surface of the gear substrate 7B corresponds to the on state of a switch circuit;

[0173] According to the state of the elastic protrusion 11 on the side of the gear spring 8A falling into one of the gear grooves 12 on the surface of the gear substrate 7B corresponding to the on state of a switch circuit, the stroke range of the roller 2 is set.

[0174] Specifically, as the roller 2 is toggled, the short-circuiting element 6 continuously changes the state of connecting the first sector-shaped copper coating 101 and the second sector-shaped copper coating 102, realizing the control function of the switch.

[0175] An arrow is painted on the roller 2, and characters "4H", "4L", "2H" are painted on the first housing 1. Corresponding to the arrow on the roller 2 pointing to the characters, the switch state of the control circuit exactly corresponds to the working modes of "4H", "4L", "2H", so that the personnel can know which working mode the vehicle is set to currently.

[0176] In this embodiment, it further includes:

[0177] According to the A end of the first switch 13 and the A end of the second switch 14 being commonly connected to correspond to a piece of the first sector-shaped copper coating 101 and the stroke range of the roller 2, the coverage area of the first sector-shaped copper coating 101 is set.

[0178] The roller 2 is painted with a mark, and the first housing 1 is painted with characters;

[0179] According to the state that the elastic protrusion 11 on the A side of the gear spring 8 sinks into the gear groove 12 on the surface of one of the gear substrates 7B, corresponding to the conduction state of a switch circuit, the mark painted on the roller 2 is aligned with the characters painted on the first housing 1.

[0180] Specifically, in the top opening of the first housing 1, a light-transmitting window is added, the input end of the LED is connected to the power supply, or connected to the power supply through a switch, and the switching state of the working mode, etc. is indicated by the display state of the LED.

[0181] In the above embodiments, the A side, the B side, or the A surface and the B surface refer to, as shown in Figure 3 the surfaces of the PCB substrate 3, the second housing 5, the short-circuiting element 6, the gear substrate 7, the gear spring 8, the pressing piece 9, and the roller 2 that are successively oriented towards the A inner wall and the B inner wall of the first housing 1 respectively.

[0182] Through the above solution, the following beneficial technical effects are obtained:

[0183] In this application, by arranging a roller on the connector at a console hole position, the console can increase the control function without adding new hole positions, reducing the expenditure on mold costs.

[0184] In this application, by integrating the control end of the drive mode, the control operation for the vehicle to change the drive mode is simple and intuitive.

[0185] In a specific embodiment, an integrated all-wheel drive high-low gear switch, whose body is composed of a housing, a roller, a laser-printed mark, a circuit board, and a light-emitting diode backlight strip. The backlight strip is used for lighting the switch during night driving, the laser indication bar is used to indicate the position state of the switch, and the circuit board is used for external wiring.

[0186] Such as Figure 9As shown, the design of the gears and pins inside the switch is mainly used to provide wiring instructions for external wiring. Pin No. 1 to Pin No. 3 are defined as empty, Pin No. 4 is defined as connected to the control terminal of the front axle engagement solenoid coil, Pin No. 5 is defined as grounded, Pin No. 6 is defined as the control terminal of the high and low range relay coil of the transfer case, Pin No. 7 is defined as grounded, and Pin No. 8 is defined as the lighting power supply. The space of the switch circuit board is small, and the current it can carry is small, only 0.5 A, resulting in that another two working indicator lights cannot be added to indicate the working state of the switch, and it is not easy to implement the connection of the triple contact points. Due to the limitation of the switch size, it can only be designed in the form of a 3-gear 2-contact switch definition. Therefore, the switch is defined as a negative control switch, which mainly sends the low-potential signal of the switch to the instrument in the later stage to light up the indicator light of the instrument and improve the driving safety of the driver when using the switch.

[0187] Table 1

[0188]

[0189] As shown in Table 1, when it is defined that neither the front axle engagement solenoid nor the high and low range solenoid is energized, it is in the "2H" state, and at this time the vehicle is in the 4x2 high-speed gear state; when it is defined that the front axle engagement solenoid is energized and the high and low range solenoid is not energized, it is in the "4H" state, and at this time the vehicle is in the 4x4 high-speed gear state; when it is defined that both the front axle engagement solenoid and the high and low range solenoid are energized, it is in the "4L" state, and at this time the vehicle is in the 4x4 high-speed gear state.

[0190] As Figure 8 shown, the circuit controlled by the integrated all-wheel drive high and low range switch consists of a power supply, a fuse, an instrument, 1 front axle engagement solenoid, 1 transfer case high and low range solenoid, 1 control switch relay, 1 high and low range shift relay, 1 front axle engagement relay and related wire connection accessories. When the circuit is connected, it forms the overall schematic diagram of the integrated all-wheel drive high and low range switch in the "2H", "4H", and "4L" gears respectively to meet the required functions, including Wiring Table 2.

[0191] Table 2

[0192]

[0193]

[0194] 1. When the roller of the integrated all-wheel drive switch is in the "2H" state, it is equivalent to the "OFF" gear of the switch. At this time, it represents that the vehicle is in the 4x2 high-speed gear position, and at this time, neither the front axle engagement solenoid nor the high and low range solenoid works;

[0195] 2. When the integrated all-wheel drive switch roller is in the "4H" state and the 4x4 high-speed gear switch is pressed, pin 475# of the switch is grounded, forming a circuit loop for the front axle engagement relay. The current passes through the coil, causing the switch of the relay to close, and outputting a high-potential signal 473# to the front axle engagement solenoid valve, enabling the solenoid valve to operate, thereby realizing the 4x4 high-speed gear function;

[0196] 3. When the integrated all-wheel drive switch roller is in the "4L" state and the 4x4 low-speed gear switch is pressed, pin 476# of the switch is grounded. One path of 476 is sent to the coil of the high / low gear shift relay, forming a circuit loop for the high / low gear shift relay. The current passes through the coil, causing the switch of the relay to close, and outputting a high-potential signal 474# to the transfer case high / low gear solenoid valve to make the solenoid valve operate. Another path of #476 is sent to the control terminal "-" of the control switch relay, using #475 as the input terminal of the control switch relay, thereby outputting a ground signal to make the front axle engagement relay work simultaneously, thus controlling the operation of the front axle engagement solenoid valve and transmitting a low-potential signal to the instrument to light up the "4X4" indicator on the instrument, reminding the driver that the vehicle is currently in a 4-wheel drive state. Through the transfer of the "control switch relay" in the middle, it is used to control the switch, thereby realizing the linkage control of the 4x4 low-speed gear function. It is found through experimental verification that the switch control logic of this physical object achieves the expected effect.

[0197] The integrated all-wheel drive high / low gear shift switch generated by the above implementation method and setting method can realize driving the relay with a switch carrying a small current, thereby controlling the action of the solenoid valve to drive the action of the air pipe to realize the control of the 4x2 drive form high-speed gear function, the 4x4 drive form high-speed gear function, and the 4x4 drive form low-speed gear function, and can send the low-potential signal of the switch to the instrument to display the working state of 4x4, meeting the usage requirements of customers for vehicle use.

[0198] The communication bus mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, only a thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0199] The electronic device includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU, Central Processing Unit), a memory management unit (MMU, Memory Management Unit), and memory. The operating system can be any one or more computer operating systems that control the electronic device through processes. For example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system, etc. And in the embodiments of the present invention, the electronic device can be a handheld device such as a smart phone or a tablet computer, or an electronic device such as a desktop computer or a portable computer. There is no special limitation in the embodiments of the present invention.

[0200] The execution subject of the electronic device control in the embodiments of the present invention can be the electronic device, or a functional module in the electronic device that can call and execute a program. The electronic device can obtain the firmware corresponding to the storage medium, and the firmware corresponding to the storage medium is provided by the supplier. The firmware corresponding to different storage media can be the same or different, and this is not limited here. After the electronic device obtains the firmware corresponding to the storage medium, it can write the firmware corresponding to the storage medium into the storage medium. Specifically, it burns the firmware corresponding to the storage medium into the storage medium. The process of burning the firmware into the storage medium can be implemented by existing technologies and will not be elaborated in the embodiments of the present invention.

[0201] The electronic device can also obtain the reset command corresponding to the storage medium, and the reset command corresponding to the storage medium is provided by the supplier. The reset commands corresponding to different storage media can be the same or different, and this is not limited here.

[0202] At this time, the storage medium of the electronic device is the storage medium written with the corresponding firmware. The electronic device can respond to the reset command corresponding to the storage medium in the storage medium written with the corresponding firmware, so that the electronic device resets the storage medium written with the corresponding firmware according to the reset command corresponding to the storage medium. The process of resetting the storage medium according to the reset command can be implemented by existing technologies and will not be elaborated in the embodiments of the present invention.

[0203] For the convenience of description, when describing the above device, various units and modules are described separately according to their functions. Of course, when implementing the present application, the functions of each unit and module can be implemented in the same or multiple software and / or hardware.

[0204] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the technical field to which this utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless specifically defined.

[0205] For method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the embodiments of this utility model are not limited by the described action sequence, because according to the embodiments of this utility model, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential to the embodiments of this utility model.

[0206] From the description of the above embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0207] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit them; although this utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high and low gear switch control system for an all-wheel drive vehicle, characterized in that: The high and low gear switch control system of the all-wheel drive vehicle comprises: a human-machine terminal and a control circuit; The control loop includes a switch; The human-machine terminal drives a switch in the control loop; Wherein, the man-machine terminal includes a fan-shaped copper cladding and a short circuit; The fan-shaped copper coating includes a first fan-shaped copper coating and a second fan-shaped copper coating; A group of first sector-shaped copper cladding and a second sector-shaped copper cladding are connected according to the contact between the two ends of the short circuit, and a switch in the driving control loop is closed; According to the transition of the two ends of the short circuit from contact connection with the first sector-shaped copper clad group and the second sector-shaped copper clad group, at least one end is not in contact connection with the first sector-shaped copper clad group or the second sector-shaped copper clad group, the switch in the driving control loop is disconnected; Wherein, the switch includes a first switch and a second switch; The A end of the first switch and the A end of the second switch are commonly connected to a corresponding first sector-shaped copper clad piece; The B end of the first switch and the B end of the second switch are respectively connected to the corresponding two second fan-shaped copper clad pieces; Wherein, the first fan-shaped copper cladding is connected to the power supply V-.

2. The high and low gear switch control system of the all-wheel drive vehicle according to claim 1, characterized in that: The control loop also includes: a first relay, a second relay, and a third relay; The coil of the first relay is connected in series with the first switch; The coil of the third relay is connected in series with the second switch; The coil of the third relay is connected in parallel with the coil of the second relay; The switch contact of the second relay is connected in parallel with the switch contact of the first switch; According to the first switch being turned on, or the contact of the second relay being turned on, the coil A end of the first relay is connected to the power source V-; According to the conduction of the second switch, the coil A end of the third relay and the coil A end of the second relay are connected to the power supply V-; The coil B end of the first relay, the coil B end of the second relay and the coil B end of the third relay have a common end connected to a power source V+.

3. The high and low gear switch control system of the all-wheel drive vehicle according to claim 2, characterized in that: Also includes: a first solenoid valve and a second solenoid valve; The coil of the first solenoid valve is connected in series with the contact of the first relay; The coil of the second solenoid valve is connected in series with the contact of the third relay; According to the open contact of the first relay being turned on, the coil A end of the first solenoid valve is connected to the power supply V+; According to the switch contact of the second relay being turned on, the coil A end of the second solenoid valve is connected to the power supply V+; The end B of the coil of the first solenoid valve and the end B of the coil of the second solenoid valve have a common end, which is connected to a power source V-.

4. The high and low gear switch control system of the all-wheel drive vehicle according to claim 3, characterized in that: The human-machine terminal comprises a first housing and a roller assembly; The first shell is a hollow cylinder; The inner wall of the first housing A is provided with an axial hole; The roller assembly is mounted on the inner side of the first shell, the roller assembly B side protrudes out the wheel axle and is connected to the shaft sleeve on the inner wall of the first shell A, and the roller assembly A side is connected to the inner wall of the first shell B; The first housing has through holes at the top and bottom, the roller assembly includes a roller, and the outer contour of the roller is exposed from the top through holes; The roller assembly includes a PCB substrate, and the PCB substrate includes a pad and a contact; The contacts connect to the fan-shaped copper, and the pads connect to the wiring harness; The wiring harness enters and exits from the bottom of the first housing, connects the relay and the solenoid valve, and forms a control circuit.

5. The high and low gear switch control system of the all-wheel drive vehicle according to claim 4, characterized in that: The roller assembly further comprises: a second housing, a short circuit, a gear base plate, a gear spring and a pressing sheet; The A and B surfaces of the gear base are respectively provided with axles; Starting from the inner wall of the first shell A and ending at the inner wall of the first shell B, the roller assembly is coaxially arranged in sequence with a PCB substrate, a second shell, a short circuit, a gear substrate, a gear spring, a pressing sheet and a roller.

6. The high and low gear switch control system of the all-wheel drive vehicle according to claim 5, characterized in that: The roller assembly also includes: The second housing is provided with an axial hole, which is connected to the wheel axle sleeve on the A surface of the gear base plate; The surface A of the PCB substrate is connected to the inner wall of the first shell B; The B side of the PCB substrate is connected to the A side of the second housing; The second shell B side is provided with a plurality of mutually insulated fan-shaped copper claddings with the shaft hole as the center; The roller is provided with an axial hole; The wheel axle on the surface B of the shift base plate passes through the roller and is fixedly connected with the roller, and the wheel axle on the surface B of the shift base plate is connected with the inner wall sleeve of the first housing A.

7. The high and low gear switch control system of the all-wheel drive vehicle according to claim 6, characterized in that: The roller assembly also includes: The short-circuit sub-surface B is connected to the gear base plate surface A; One end of the short-circuit A surface is in contact with the first sector-shaped copper cladding, and the other end is in contact with the second sector-shaped copper cladding; The roller drives the shift base plate to rotate, so that the short-circuit sub-converter contacts and connects with one of the plurality of second sector-shaped copper claddings, thereby forming an on or off state of the switch corresponding to the second sector-shaped copper cladding.

8. The high and low gear switch control system of the all-wheel drive vehicle according to claim 7, characterized in that: The roller assembly also includes: The edge of the pressing sheet is fixedly connected to the edge of the second shell; A movable gap is reserved between the pressing sheet side A and the second shell side B; The shift spring B side is fixedly connected to the pressing plate A side, The gear spring has an elastic protrusion on the A side; The shift base plate B surface is provided with a shift groove in a sector shape with the axle of the shift base plate as the center; The elastic protrusion on the side of the shift spring A corresponds to the shift groove on the side B of the shift substrate; According to the roller driving the shift base plate to rotate, the elastic protrusion on the side of the shift spring A passes over the shift groove on the surface B of the shift base plate; Wherein, a through hole is provided between the shift spring and the pressing plate; The axle on the B surface of the gear substrate passes through the through hole.

9. The high and low gear switch control system of the all-wheel drive vehicle according to claim 8, characterized in that: The roller assembly also includes: According to the roller driving the shift substrate to rotate, the short-circuit sub-conversion is connected to one of the plurality of second sector-shaped copper clads to form an on or off state of the switch corresponding to the second sector-shaped copper clad, and the relative position of the elastic protrusion on the side of the shift spring A when passing through the shift groove on the surface B of the shift substrate is set; According to the relative position of the elastic protrusion on the side of the shift spring A when passing over the shift groove on the surface B of the shift substrate, the state in which the elastic protrusion on the side of the shift spring A is sunk into one of the shift grooves on the surface B of the shift substrate corresponds to the conduction state of a switch circuit; The travel range of the roller is set according to the state in which the elastic protrusion on the side of the shift spring A is sunk into the shift groove on the surface B of one of the shift substrates, corresponding to the conduction state of a switch circuit.

10. The high and low gear switch control system of the all-wheel drive vehicle according to claim 9, characterized in that: Also includes: According to the A end of the first switch and the A end of the second switch being connected together to a corresponding first sector-shaped copper cladding and the travel range of the roller, the coverage area of ​​the first sector-shaped copper cladding is set; The roller is painted with signs, and the first shell is painted with characters; According to the state in which the elastic protrusion on the side of the shift spring A sinks into the shift groove on the surface B of one of the shift substrates, corresponding to the on-state of a switch circuit, the mark painted on the roller is aligned with the characters painted on the first shell.

Images