CN201214443Y

CN201214443Y - Automobile steering wheel

Info

Publication number: CN201214443Y
Application number: CNU2008200585316U
Authority: CN
Inventors: 高卫民
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2008-05-16
Filing date: 2008-05-16
Publication date: 2009-04-01
Anticipated expiration: 2018-05-16

Abstract

The utility model discloses a hand warming automotive steering wheel which comprises a main boy; the main body comprises a wheel rim and a wheel spoke; the wheel rim comprises a part to be held by hands; the part to be held by bands is provided with a heating element and a temperature sensing element which are connected with a constant temperature controller by circuits. With the heating element, the temperature sensing element and the constant temperature controller, the steering wheel can automatically control the temperature of the part to be held by bands on the steering wheel. In cold days, when the temperature in the driving cab is quite low, the heating element can automatically raise the temperature of the outer surface of the steering wheel to the range comfortable to touch by hands, so that the driver can drive comfortably; when the inside of the car is warmed up, the constant temperature controller stops working and the temperature of the steering wheel will be kept in a certain range; the whole system has quite low operation cost, and is safe and reliable.

Description

Vehicle steering

Technical field

The utility model relates to a kind of vehicle steering, relates in particular to a kind of vehicle steering that can warm up hand.

Background technology

At present, automobile steering wheel is used imitation leather composite material or corium lining at the wheel rim place of shaking hands, to increase the traveling comfort of feel.And under the climatic conditions of cold, the driver into the car just, the surface temperature of steering wheel rim is the same with environment very low, air-conditioning will just can make vehicle interior temperature rise to comfort standard after starting a period of time in the car.This traveling comfort to steering vehicle causes certain influence.In the cold environment, common service orientation dish fine hair sheath is to increase warm feel in the winter time.The fine hair sheath is easily dirty, and Yi Chao influences feel.

The utility model content

The technical problems to be solved in the utility model provides a kind of can the heating automatically so that the vehicle steering of warm feel to be provided under cold environment.

In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of vehicle steering, comprise steering wheel main body, main body comprises wheel rim and spoke, include the position of shaking hands on the wheel rim, the position of shaking hands is provided with heater element and temperature-sensing element, and heater element, temperature-sensing element all are connected by circuit with a thermostat controller.

Preferably, thermostat controller is positioned at the inside of steering wheel main body.

Preferably, the outside face of wheel rim also is enclosed with overplate, and heater element is positioned at tectal inside.

Further, heater element is with the interior thermal insulation layer that also is provided with.

As the improved technical scheme of the utility model, also comprise a manual switch in the junction circuit of heater element and thermostat controller.

Preferably, above-mentioned hand switch is a soft-touch control.Soft-touch control is installed in the inside of steering wheel main body, and two of soft-touch control touch sheet and expose from the surface of wheel rim.

Preferably, heater element can be carbon fiber infrared electric heating line, silaatic electric heating element or resistor wire.

The utility model can be realized the temperature of shaking hands on the automatic guidance bearing circle and locating owing to be provided with heater element, temperature-sensing element and thermostat controller in bearing circle.In cold environment, under the lower situation of the indoor temperature of vehicle drive, heater element can automatically be brought up to the bearing circle hull-skin temperature scope of comfortable feel earlier, makes driver's operation comfortable; After warming up in the car, thermostat controller quits work, and the temperature of bearing circle will remain in certain scope, and the total system operating cost is lower, and safe and reliable.

Further, thermostat controller and heater element all are embedded in the bearing circle, and total system does not have external circuit and device, does not take interior space.In addition, whether the setting of soft-touch control is convenient to manual control and bearing circle is heated.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

A kind of vehicle steering front view that Fig. 1 relates to for the utility model.

Fig. 2 is the schematic cross-section at A-A place among Fig. 1.

Fig. 3 is touch switch circuit figure.

Fig. 4 is the thermostat controller circuit diagram.

Fig. 5 is heater circuit figure.

The specific embodiment

As shown in Figure 1 and Figure 2, the vehicle steering that the utility model relates to comprises main body 2, and main body 2 comprises wheel rim 3 and spoke 4 again.The outside face of wheel rim 3 is enclosed with

overplate

7, and 8 places, position of shaking hands of wheel rim 3 are provided with heater element 5, and the position of bearing circle is held at this position 8 of shaking hands exactly when normal driving, be total up to 2 places.Heater element 5 is positioned at the inside of overplate 7, and in order to make the very fast generation in bearing circle surface warm, heater element 5 should as close as possible overplate 7.A thermostat controller 6 is connected with heater element 5 by circuit, can control the work of heater element 5.Also be provided with hand switch 1 on steering wheel main body 2, hand switch 1 also is connected in the control circuit of heater element 5.In case heater element 5 energising is promptly heatable and be passed to the wheel rim top layer.Heater element 5 is not less than 50 millimeters in the length at each 8 place, position of shaking hands along the outer rim circular arc, and width can be no more than the diameter of section of wheel rim 3.Certainly, in order to reduce thermal loss, can be at heater element 5 with the interior thermal insulation layer 9 that is provided with, thermal insulation layer 9 has some necessary weighting materials with interior.

As shown in Figure 2, in the present embodiment, thermostat controller 6 is located at the inside of steering wheel rim 3, with heater element 5 by the circuit (not shown) that is connected.Thermostat controller 6 can the automatic guidance bearing circle temperature, be so specifically: when the bearing circle temperature was lower than preset value, thermostat controller 6 was connected the power supply of heater elements 5, begins bearing circle is heated; When temperature rose to expected value, thermostat controller 6 disconnected the power supply of heater element 5, stops heating.

A kind of circuit of thermostat controller 6 as shown in Figure 4, VT1 aerotron 3AX31 uses as temperature-sensing element among the figure, variable resistance RP is used for the preset value adjustment.When the bearing circle place of shaking hands temperature is lower than design temperature, the electric current I ceo of heat sensitive sensor 3AX31 diminishes, 1 pin is a low level, 2 pin output high potential after IC1A is anti-phase, the VT2 conducting, power-supply controller of electric RL adhesive as shown in Figure 5, thereby makes thermoconverter R (being above-mentioned heater element 5) energized work.Otherwise, when the bearing circle place of shaking hands temperature is higher than design temperature, 1 pin high level then, VT2 ends, and power-supply controller of electric RL discharges, thermoconverter R (heater element 5) outage.Used relay as power-supply controller of electric RL in this embodiment, in fact, the power of heater element 5 is very little, can use thermoconverter R to replace relay R L and directly be connected with VT2, as load.Having under the power supply situation, thermostat controller 6 can make the temperature at the position of shaking hands remain in the comfort standard automatically.In the circuit of Fig. 4, also be provided with a K switch, just above-mentioned hand switch 1 can manually be controlled the power supply of thermostat controller 6 by it, when promptly K disconnects, 6 outages of control thermostat controller, automatic heating function is closed; Have only connection K, thermostat controller 6 could carry out automatic guidance to heater element 5.

This hand switch 1 can be a soft-touch control, its circuit as shown in Figure 3, this soft-touch control also is installed in the inside of steering wheel main body 2, two of soft-touch control touch sheet A, B and need to expose from the surface of wheel rim 3, be convenient to staff and touch, can be arranged among wheel rim inboard, Fig. 1 the position shown in two marks 1 such as it.Principle of work is as follows: is touched and provides signal when touching sheet A, be added to trigger end 2 pin that IC555 triggers controller, trigger the controller upset through C4, and 3 pin output high level, K connects the power supply of thermostat controller 6; Touch another one and touch sheet B, signal is added to trigger end 6 pin that trigger controller through C3, triggers controller and resets, and the output of 3 pin transfers low level to, and K disconnects the power supply of thermostatic control electrical equipment 6.

When the driver into the car, when need starting heating function, touch the touch sheet A that is positioned at the steering wheel rim place earlier.The temperature sensor of being located in this bearing circle can detect the temperature of position, wheel rim handshake part, if be lower than preset value, then thermostat controller 6 is connected the power supply of heater element 5, and the temperature increase at the position of will shaking hands apace is to comfort standard; The temperature at position is in target temperature range if shake hands, and then thermostat controller 6 cuts off the power supply of heater element 5, stops heating.Preset value can be set between 20 ℃ to 26 ℃.If be in the warm environment, the temperature at the position of shaking hands is higher than preset value, and then the power supply of thermostat controller 6 meeting automatic cutout heater elements 5 can not heat again.

And if touched sheet B, then the power supply of thermostat controller 6 is disconnected, even the temperature at the position of shaking hands is lower than preset value, also can't realize automatic heating.

Preferably, above-mentioned heater element 5 can adopt the metallic resistor silk, and material is a 0Cr23A15 Aludirome series, and diameter is 0.2-0.3mm, and working current is 0.6 ampere.Two-wire twined and arranges when heater element 5 adopted the hot line material, did not produce the electromagnetic interference phenomenon.Perhaps adopt carbon fiber infrared electric heating line as heater element 5, thermal inertia is little, and heating is rapid, even, and heating power is fast.The soft electric heating film element that can also adopt high temperature resistant, high heat conduction, the silaatic electric heating element that insulating power are good, intensity is good, resistant to elevated temperatures fibre reinforced materials and the set of metal heating film circuit to form.Not only cost is low but also heating effect good for these heater elements 5.

Because all circuit and device all are arranged in the vehicle steering, compact conformation does not take interior space.The utility model is particularly suitable for being applied in the top grade of being particular about driving comfort, the luxury car.

Claims

1. vehicle steering, comprise steering wheel main body (2), described main body (2) comprises wheel rim (3) and spoke (4), include the position of shaking hands (8) on the wheel rim (3), it is characterized in that: the position of shaking hands (8) locate to be provided with heater element (5) and temperature-sensing element, and described heater element (5), temperature-sensing element all are connected by circuit with a thermostat controller (6).

2. vehicle steering as claimed in claim 1 is characterized in that: described thermostat controller (6) is positioned at the inside of steering wheel main body (2).

3. vehicle steering as claimed in claim 1 is characterized in that: the outside face of wheel rim (3) also is enclosed with overplate (7), and described heater element (5) is positioned at the inside of overplate (7).

4. vehicle steering as claimed in claim 3 is characterized in that: described heater element (5) is with the interior thermal insulation layer (9) that also is provided with.

5. vehicle steering as claimed in claim 1 is characterized in that: also comprise a manual switch (1) in the junction circuit of described heater element (5) and thermostat controller (6).

6. vehicle steering as claimed in claim 5 is characterized in that: described hand switch (1) is a soft-touch control.

7. vehicle steering as claimed in claim 6 is characterized in that: described soft-touch control is installed in the inside of steering wheel main body (2), and (A B) exposes from the surface of wheel rim (3) two touch sheets of soft-touch control.

8. vehicle steering as claimed in claim 1 is characterized in that: described heater element (5) is carbon fiber infrared electric heating line, silaatic electric heating element or resistor wire.