Steering wheel heating device and automobile steering wheel

Abstract

The utility model discloses a steering wheel heating device and an automobile steering wheel, and relates to the technical field of automobile steering wheel design, the device comprises a heating pad base material, one side of the heating pad base material is connected with a steering wheel body through gum, the other side of the heating pad base material is sewn with a plurality of first heating wires and a plurality of second heating wires through sewing threads, and the first heating wires and the second heating wires are alternately distributed; the control unit is electrically connected with the first heating wire and the second heating wire respectively, and the control unit is used for switching the serial connection mode and the parallel connection mode of the first heating wire and the second heating wire and controlling the heating duration of the first heating wire and the second heating wire. The first heating wires and the second heating wires which are alternately distributed are designed on the heating pad base material, the control unit is used for controlling the first heating wires and the second heating wires to be in a serial connection mode and a parallel connection mode, the total power density of the whole circuit is changed, heating time is shortened, meanwhile, temperature rise is accelerated, and the using body feeling is improved.

Description

Technical Field

[0001] This application generally relates to the technical field of automotive steering wheel design, and particularly relates to a steering wheel heating device and an automotive steering wheel. Background Art

[0002] Steering wheel heating has become an essential configuration for automobiles. During driving in winter, the steering wheel heating function is usually turned on. However, the heating speed of the steering wheel in a low-temperature environment is often too slow, so that the driver needs to wait for a long time to feel the heating temperature on the surface of the steering wheel, which affects the use experience of the steering wheel heating function. Therefore, we propose a steering wheel heating device and an automotive steering wheel to solve the above problems. Utility Model Content

[0003] In view of the above defects or deficiencies in the prior art, it is desirable to provide a steering wheel heating device and an automotive steering wheel that can improve the temperature rise rate.

[0004] In a first aspect, this application provides a steering wheel heating device, including:

[0005] A heating pad substrate, one side of the heating pad substrate is connected to the steering wheel body through an adhesive, and multiple first heating wires and multiple second heating wires are sewn on the other side thereof through sewing threads, and the two are alternately distributed;

[0006] A control unit, the control unit is electrically connected to the first heating wire and the second heating wire respectively, and the control unit is used to switch the series and parallel modes of the first heating wire and the second heating wire, and control the heating duration of the first heating wire and the second heating wire.

[0007] According to the technical solution provided by the embodiment of this application, the control unit includes: a control module, a first switch, a second switch, a third switch and a power supply module that are electrically connected;

[0008] The power supply module is used to supply power to the first heating wire and the second heating wire;

[0009] The control module is used to control the first switch and the third switch to be in a closed state, and control the second switch to be in an open state, so that the first heating circuit and the second heating circuit are in a parallel mode;

[0010] The control module is further used to control the first switch and the third switch to be in an open state, and control the second switch to be in a closed state when the heating duration of the first heating wire and the second heating wire in the parallel mode reaches a preset duration, so that the first heating circuit and the second heating circuit are in a series mode.

[0011] According to the technical solution provided by the embodiment of the present application, all the first heating wires are electrically connected to the control unit through a first connecting member to form a first heating circuit; all the second heating wires are electrically connected to the control unit through a second connecting member to form a second heating circuit.

[0012] According to the technical solution provided by the embodiment of the present application, the first connecting member includes a first heat shrinkable tube, a first wire harness, and a first connector; the second connecting member includes a second heat shrinkable tube, a second wire harness, and a second connector, and the first connector and the second connector are respectively connected to the control unit.

[0013] According to the technical solution provided by the embodiment of the present application, the first heating wire is connected to the first connecting member through a first heating wire jumper, and the second heating wire is connected to the second connecting member through a second heating wire jumper;

[0014] The connection part between the first heating wire jumper and the first connecting member is configured as a first wiring area;

[0015] The connection part between the second heating wire jumper and the second connecting member is configured as a second wiring area.

[0016] According to the technical solution provided by the embodiment of the present application, the first wiring area is located on the side of the heating pad substrate away from the adhesive, and the second wiring area is located between the heating pad substrate and the adhesive;

[0017] Or, the second wiring area is located on the side of the heating pad substrate away from the adhesive, and the first wiring area is located between the heating pad substrate and the adhesive.

[0018] According to the technical solution provided by the embodiment of the present application, both the first wiring area and the second wiring area are located on the side of the heating pad substrate away from the adhesive, and the first wiring area and the second wiring area are arranged in a staggered manner.

[0019] According to the technical solution provided by the embodiment of the present application, the sewing threads of the first heating wire and the sewing threads of the second heating wire are arranged in a staggered manner.

[0020] According to the technical solution provided by the embodiment of the present application, the sewing thread includes:

[0021] The surface thread and the bobbin thread, the surface thread is arranged on the side of the heating pad substrate away from the adhesive, and the bobbin thread is arranged on the heating pad substrate and is located between the heating pad substrate and the adhesive.

[0022] In a second aspect, the present application provides an automotive steering wheel, and the automotive steering wheel includes: a steering wheel heating device as described above.

[0023] As can be seen from the above technical solutions, the present application has at least the following beneficial effects:

[0024] The present application discloses a steering wheel heating device, which includes: a heating pad substrate, one side of which is connected to the steering wheel body through an adhesive, and the other side is sewn with a plurality of first heating wires and a plurality of second heating wires through sewing threads, and the first heating wires and the second heating wires are alternately distributed; further, the device also includes a control unit, which is electrically connected to the first heating wires and the second heating wires respectively, and the control unit is used to switch the series and parallel modes of the first heating wires and the second heating wires, and control the heating duration of the first heating wires and the second heating wires.

[0025] The present application designs the first heating wires and the second heating wires that are alternately distributed on the heating pad substrate, and uses the control unit to control the first heating wires and the second heating wires to be in series and parallel modes, changing the total power density of the entire circuit, thereby shortening the heating duration and accelerating the temperature rise while improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects, and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings.

[0027] Figure 1 It is a schematic structural diagram of the steering wheel heating device.

[0028] Figure 2 It is a schematic structural diagram of the control unit and each circuit in the parallel mode.

[0029] Figure 3 It is a schematic structural diagram of the control unit and each circuit in the series mode.

[0030] Figure 4 It is a change curve graph of time and temperature.

[0031] Figure 5 It is a schematic structural diagram of each heating wire and the connecting piece.

[0032] Figure 6 For Figure 5 The enlarged view of part A in

[0033] Figure 7 It is a schematic diagram of the first wiring area and the second wiring area.

[0034] Reference numerals in the figure: 1, heating pad substrate; 2, adhesive; 3, first heating wire; 4, second heating wire; 5, first connecting piece; 6, first heating circuit; 7, second heating circuit; 8, control module; 9, first switch; 10, second switch; 11, third switch; 12, power supply module; 13, first wiring area; 14, second wiring area; 15, top thread; 16, bottom thread; 17, second connecting piece. Detailed implementation manners

[0035] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the sake of convenience of description, only the parts related to the invention are shown in the accompanying drawings.

[0036] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0037] To make the steering wheel heating device provided by the embodiments of the present application clearer and easier to understand, the device will be introduced below with reference to the accompanying drawings. As Figure 1 shown, this figure is a schematic structural diagram of the steering wheel heating device provided by the embodiments of the present application. The device includes:

[0038] A heating pad substrate 1, one side of the heating pad substrate 1 is connected to the steering wheel body through an adhesive 2, and multiple first heating wires 3 and multiple second heating wires 4 are sewn on the other side thereof, and the two are alternately distributed; among them, the sewing threads of the first heating wires 3 and the sewing threads of the second heating wires 4 are arranged in a staggered manner, and the overall layout is more beautiful. Here, the steering wheel body can be a steering wheel foam layer, a leather layer, or other functional pads of the steering wheel, and the heating pad substrate 1 is attached to the above-mentioned functional pads through the adhesive 2. Specifically, as Figure 1 shown, the sewing thread includes: a surface thread 15 and a bottom thread 16. The surface thread 15 is arranged on the side of the heating pad substrate 1 away from the adhesive 2, and the bottom thread 16 is arranged on the heating pad substrate 1 and is located between the heating pad substrate 1 and the adhesive 2.

[0039] A control unit, the control unit is electrically connected to the first heating wire 3 and the second heating wire 4 respectively; among them, as Figure 5 shown, all the first heating wires 3 are electrically connected to the control unit through a first connector 5 to form a first heating circuit 6; all the second heating wires 4 are electrically connected to the control unit through a second connector 17 to form a second heating circuit 7. Specifically, the first connector 5 includes a first heat shrinkable tube, a first wire harness, and a first connector; the second connector 17 includes a second heat shrinkable tube, a second wire harness, and a second connector, and the first connector and the second connector are respectively connected to the control unit. Additionally, the first heating wire 3 is connected to the first connector 5 through a first heating wire thread pick-up, and the second heating wire 4 is connected to the second connector 17 through a second heating wire thread pick-up;

[0040] The connection part of the first heating wire thread pick-up and the first connector 5 is configured as a first wiring area 13;

[0041] The connection between the second heating wire lead and the second connecting member 17 is configured as the second wiring area 14.

[0042] Moreover, the contacts at these electrical connection positions can adopt clock spring connections to ensure the stability of the circuit connection.

[0043] The control unit is used to switch the series and parallel modes of the first heating wire 3 and the second heating wire 4, and control the heating duration of the first heating wire 3 and the second heating wire 4.

[0044] Specifically, the control unit includes: an electrically connected control module 8, a first switch 9, a second switch 10, a third switch 11, and a power supply module 12; here, the type of the control module 8 is, for example, an Electronic Control Unit (ECU).

[0045] The power supply module 12 is used to supply power to the first heating wire 3 and the second heating wire 4;

[0046] The control module 8 is used to control the first switch 9 and the third switch 11 to be in the closed state and the second switch 10 to be in the open state, as Figure 2 shown, so that the first heating circuit 6 and the second heating circuit 7 are in the parallel mode;

[0047] The control module 8 is also used to control the first switch 9 and the third switch 11 to be in the open state and the second switch 10 to be in the closed state when the heating duration of the first heating wire 3 and the second heating wire 4 in the parallel mode reaches the preset duration, as Figure 3 shown, so that the first heating circuit 6 and the second heating circuit 7 are in the series mode.

[0048] Furthermore, as Figure 7 shown, the first wiring area 13 is located on the side of the heating pad substrate 1 away from the adhesive 2, and the second wiring area 14 is located between the heating pad substrate 1 and the adhesive 2;

[0049] Or, the second wiring area 14 is located on the side of the heating pad substrate 1 away from the adhesive 2, and the first wiring area 13 is located between the heating pad substrate 1 and the adhesive 2.

[0050] Furthermore, both the first wiring area 13 and the second wiring area 14 are located on the side of the heating pad substrate 1 away from the adhesive 2, and the first wiring area 13 and the second wiring area 14 are arranged in a staggered manner.

[0051] Among them, the purpose of the above arrangement methods is to avoid the thickness stacking of the wiring areas, increasing the assembly difficulty, and moreover, if the wiring areas are thickly stacked, there will be more heat during heating, and ablation is likely to occur.

[0052] For example, Figure 4T1 in it is the maximum heating moment in the parallel mode, that is, the time node when the parallel mode switches to the series mode; Figure 4 T2 in it is the maximum heating moment in the series mode, that is, the time node when the series mode switches to the parallel mode. As Figure 2 shown, during the short-term preheating process, the control module 8 controls the first switch 9 and the third switch 11 to be in the closed state and the second switch 10 to be in the open state, so as to realize that the first heating wire 3 and the second heating wire 4 are in the parallel mode for heating. Assuming the power density is A0 (W / mm²), then full-power heating is realized during the short-term preheating process.

[0053] As Figure 3 shown, when heated to a certain time T1, the control module 8 controls the first switch 9 and the third switch 11 to be in the open state and the second switch 10 to be in the closed state, so that the first heating wire 3 and the second heating wire 4 are in the series mode, and the power density is changed to A0 / 4 (W / mm²), changing the power density to 1 / 4 of the original, and controlling the temperature heating to T2 at the power density of A0 / 4 (W / mm²) to ensure the heating constant temperature and ensure the temperature safety of the first wiring area 13, the second wiring area 14 and the steering wheel heating pad body.

[0054] Furthermore, the second heating wire 4 corresponding to the steering wheel decoration position and the heat conduction position of the heating pad substrate 1 is densely distributed; it is convenient for temperature conduction and auxiliary temperature rise. The heat conduction position here refers to the area that is relatively easy to conduct heat.

[0055] In this application, the first heating wire 3 and the second heating wire 4 are designed to be alternately distributed on the heating pad substrate 1, and the control unit is used to control the first heating wire 3 and the second heating wire 4 to be in series and parallel modes, changing the total power density of the whole circuit, thereby shortening the heating duration and accelerating the temperature rise while improving the use experience.

[0056] This application also provides an automobile steering wheel, including: a steering wheel heating device as described above. This automobile steering wheel has the functions and advantages of the steering wheel heating device, which will not be elaborated here in detail.

[0057] The above description is only the preferred embodiment of this application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in this application.

Claims

1. A steering wheel heating device, characterized in that, Including: A heating pad substrate (1), one side of the heating pad substrate (1) is connected to the steering wheel body through an adhesive (2), and multiple first heating wires (3) and multiple second heating wires (4) are sewn on the other side thereof by sewing threads, and the two are alternately distributed; A control unit, the control unit is electrically connected to the first heating wire (3) and the second heating wire (4) respectively, and the control unit is used to switch the series and parallel modes of the first heating wire (3) and the second heating wire (4), and control the heating duration of the first heating wire (3) and the second heating wire (4).

2. The steering wheel heating device according to claim 1, wherein The control unit includes: a control module (8), a first switch (9), a second switch (10), a third switch (11) and a power supply module (12) that are electrically connected; The power supply module (12) is used to supply power to the first heating wire (3) and the second heating wire (4); The control module (8) is used to control the first switch (9) and the third switch (11) to be in a closed state, and control the second switch (10) to be in an open state, so that the first heating circuit (6) and the second heating circuit (7) are in a parallel mode; The control module (8) is further used to control the first switch (9) and the third switch (11) to be in an open state, and control the second switch (10) to be in a closed state when the heating duration of the first heating wire (3) and the second heating wire (4) in the parallel mode reaches a preset duration, so that the first heating circuit (6) and the second heating circuit (7) are in a series mode.

3. The steering wheel heating device according to claim 2, wherein All the first heating wires (3) are electrically connected to the control unit through a first connector (5) to form a first heating circuit (6); all the second heating wires (4) are electrically connected to the control unit through a second connector (17) to form a second heating circuit (7).

4. The steering wheel heating device according to claim 3, wherein, The first connector (5) includes a first heat shrinkable tube, a first wire harness and a first connector; the second connector (17) includes a second heat shrinkable tube, a second wire harness and a second connector, and the first connector and the second connector are respectively connected to the control unit.

5. The steering wheel heating device according to claim 3, characterized in that, The first heating wire (3) is connected to the first connector (5) through a first heating wire thread; the second heating wire (4) is connected to the second connector (17) through a second heating wire thread; The connection part of the first heating wire thread and the first connector (5) is configured as a first wiring area (13); The connection part of the second heating wire thread and the second connector (17) is configured as a second wiring area (14).

6. The steering wheel heating device according to claim 5, characterized in that, The first wiring area (13) is located on the side of the heating pad substrate (1) away from the adhesive (2), and the second wiring area (14) is located between the heating pad substrate (1) and the adhesive (2); Or, the second wiring area (14) is located on the side of the heating pad substrate (1) away from the adhesive (2), and the first wiring area (13) is located between the heating pad substrate (1) and the adhesive (2).

7. The steering wheel heating device according to claim 5, characterized in that, Both the first wiring area (13) and the second wiring area (14) are located on the side of the heating pad substrate (1) away from the adhesive (2), and the first wiring area (13) and the second wiring area (14) are arranged in a staggered distribution.

8. The steering wheel heating device according to claim 1, characterized in that, The sewing threads of the first heating wire (3) and the sewing threads of the second heating wire (4) are arranged in a staggered distribution.

9. A steering wheel heating device according to claim 1 or 8, characterized in that, The sewing thread includes: The top thread (15) and the bobbin thread (16). The top thread (15) is arranged on the side of the heating pad substrate (1) away from the adhesive (2), and the bobbin thread (16) is arranged on the heating pad substrate (1) and located between the heating pad substrate (1) and the adhesive (2).

10. An automotive steering wheel, characterized in that, The vehicle steering wheel includes: a steering wheel heating device according to any one of claims 1-9.

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