Knob structure with rotary multi-section light guide body

Abstract

The invention discloses a knob structure with a rotary multi-section light guide body, and the structure comprises a circuit board which is provided with a back illumination LED lamp and is provided with an arc-shaped hole, and the arc-shaped hole penetrates through the front surface and the back surface of the circuit board; the potentiometer is arranged on the back surface of the circuit board and comprises a body part mounted on the circuit board and an embedded part rotationally arranged relative to the body part, and a jack is formed in the embedded part; the knob body is arranged above the circuit board and comprises a fixed base, a knob cover and a knob seat, the knob cover and the knob seat are arranged in a linkage mode, the knob seat is rotationally arranged relative to the fixed base, and a light outlet hole is formed in the knob cover; and a light guide. The multi-section light guide body is used for guiding light of the back illumination LED to the front face for irradiation, meanwhile, the gear structure of the knob body is used for driving the light guide body to rotate and synchronously driving the potentiometer to rotate, the potentiometer collects knob angle signals, and therefore the gear changing purpose is achieved, and the air conditioner temperature or the air outlet amount is adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile electronics, and more particularly to a knob structure with a rotatable multi-segment light guide. Background Art

[0002] The existing knobs for automobile air conditioning panels are all equipped with a lighting structure, which usually includes an LED lamp installed on the front of a circuit board and a light guide electrically connected to the LED lamp and passing through the knob housing, and the other end of the light guide is located on the knob body so that light can be displayed on the knob body.

[0003] The above-mentioned prior art has the following defects: since the LED lamp is installed on the front of the circuit board, the light guide has to pass through the knob housing, which increases the internal space of the knob, which is not conducive to the compactness and simplification of the structure and the reduction of production costs; secondly, the existing knob can adjust the temperature or air volume after turning, and there is a signal collection structure connected to the circuit board at the bottom of the knob. Therefore, how to redesign the light guide structure of the existing knob and enable the light guide to participate in the signal collection function when turning the knob has become the direction of our thinking. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and provides a knob structure with a rotatable multi-segment light guide. The multi-segment light guide is used to guide the light of the back-lit LED to the front side for illumination. At the same time, the gear structure of the knob body is used to drive the light guide to rotate, and the potentiometer is driven to rotate synchronously. The potentiometer collects the knob angle signal, thereby achieving the purpose of gear change, so as to adjust the air conditioner temperature or air volume.

[0005] To achieve the above object, the present invention provides the following technical solutions: A knob structure with a rotatable multi-segment light guide, comprising: A circuit board is provided with a back-lit LED lamp and an arc-shaped hole is opened thereon, and the arc-shaped hole is arranged through the front and back of the circuit board; The potentiometer is arranged on the back of the circuit board and comprises a main body portion mounted on the circuit board and an embedded portion rotatably arranged relative to the main body portion, wherein a jack is arranged on the embedded portion; The knob body is arranged above the circuit board and comprises a fixed base and a knob cover and a knob seat which are arranged in linkage. The knob seat is arranged to rotate relative to the fixed base, and a light outlet hole is arranged on the knob cover; The light guide includes a curved section, a connecting section and a conducting section. The curved section is arranged through the arc hole. One end of the curved section is inserted into the jack and cooperates with the embedded part and is arranged opposite to the back-lit LED lamp. The other end of the curved section is connected to the connecting section. The connecting section is positioned on the knob seat. The conducting section is positioned on the knob cover and is partially located in the light outlet hole. The conducting section is connected to one end of the connecting section away from the curved section.

[0006] Preferably, the back-lit LED lamp is arranged on the back side of the circuit board.

[0007] Preferably, the back-lit LED lamp is arranged on the front side of the circuit board, and the circuit board is provided with an opening connecting the front side and the back side of the circuit board at the back-lit LED lamp.

[0008] Preferably, the jack is arranged opposite to the backlit LED lamp.

[0009] Preferably, an accommodating portion is provided on the outer side of the knob seat, and an accommodating groove for accommodating the connecting section is provided on the accommodating portion.

[0010] Preferably, a plurality of groups of positioning grooves are provided on both sides of the accommodating groove on the accommodating portion, and matching positioning columns are provided at positions corresponding to the positioning grooves on the connecting section.

[0011] Preferably, a limiting opening is provided on the conducting section, an accommodating space is provided inside the knob cover corresponding to the light emitting hole, and two side limiting blocks for limiting the conducting section and a limiting protrusion located at the limiting opening are provided in the accommodating space.

[0012] Preferably, the bending section, the connecting section and the conducting section are fixed or integrally arranged.

[0013] Preferably, a connector hole is formed at one end of the connecting section close to the curved section, and a connector section inserted into the connector hole is provided on the curved section.

[0014] Preferably, a protective cover is installed on the back side of the circuit board below the potentiometer, and the curved section passes through the protective cover.

[0015] Beneficial effects of the present invention: The structural design of the present invention is reasonable. It uses a multi-section light guide to guide the light of the back-illuminated LED to the front illumination. At the same time, the gear structure of the knob body is used to drive the light guide to rotate, and the potentiometer is driven to rotate synchronously. The potentiometer collects the knob angle signal, thereby achieving the purpose of gear change, so as to realize the adjustment of the air conditioner temperature or air output. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure of a specific embodiment of the present invention is shown in FIG. Figure 1 ; Figure 2 The structure of a specific embodiment of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a structural schematic diagram reflecting the button body in a specific embodiment of the present invention; Figure 4 The exploded view of the button body is shown in the specific embodiment of the present invention; Figure 5 The structure of the circuit board is shown in the following figure. Figure 1 ; Figure 6 The structure of the circuit board is shown in the following figure. Figure 2 ; Figure 7 It is a structural schematic diagram reflecting a potentiometer according to a specific embodiment of the present invention; Figure 8 It is a structural schematic diagram of a light guide body according to a specific embodiment of the present invention; Fig. 9 It is a structural schematic diagram reflecting a bending section in a specific embodiment of the present invention; Fig.10 It is a structural schematic diagram reflecting the connection section of a specific embodiment of the present invention; Fig.11 It is a structural schematic diagram reflecting the conduction section of a specific embodiment of the present invention; Fig.12 It is a structural schematic diagram of a knob seat according to a specific embodiment of the present invention; Fig.13 It is a schematic diagram of the structure of the knob cover according to a specific embodiment of the present invention; Fig.14 It is a schematic diagram of a part of the structure inside the knob cover according to a specific embodiment of the present invention.

[0017] In the figure: 1. circuit board; 11. back-lit LED lamp; 12. arc-shaped hole; 13. opening; 14. protective cover; 1a. front; 1b. back; 2. potentiometer; 21. main body; 22. embedded part; 23. jack; 3. knob body; 31. fixed base; 4. knob cover; 41. light outlet; 42. accommodating space; 43. side limit block; 44. limit protrusion; 5. knob seat; 51. accommodating part; 52. accommodating groove; 53. positioning groove; 6. light guide; 7. bending section; 71. plug-in section; 8. connecting section; 81. positioning column; 82. plug-in hole; 9. conduction section; 91. limit opening. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-14 As shown, a knob structure with a rotatable multi-segment light guide comprises: a circuit board 1, on which a back-lit LED lamp 11 is provided, and an arc hole 12 is opened on the circuit board 1, and the arc hole 12 is set through the front side 1a and the back side 1b of the circuit board 1; a potentiometer 2, which is arranged on the back side 1b of the circuit board 1, and comprises a main body 21 installed on the circuit board 1 and an embedded part 22 rotatably arranged relative to the main body 21, and a plug hole 23 is arranged on the embedded part 22; a knob body 3, which is arranged above the circuit board 1, and comprises a fixed base 31 and a knob cover 4 and a knob seat 5 arranged in linkage, the knob seat 5 is rotatably arranged relative to the fixed base 31, and the knob cover 4 is provided with a light outlet hole 41; a light guide 6, which comprises a curved section 7, a connecting section 8, and a rotating section 9. 8 and a conducting section 9, the bent section 7 is arranged through the arc hole 12, one end of the bent section 7 is inserted into the jack 23 and cooperates with the embedded part 22 and is arranged opposite to the back-lit LED lamp 11, the other end of the bent section 7 is connected to the connecting section 8, the connecting section 8 is positioned and arranged on the knob seat 5, the conducting section 9 is positioned and arranged on the knob cover 4 and is partially located in the light emitting hole 41, and the conducting section 9 is connected to one end of the connecting section 8 away from the bent section 7; the back-lit LED lamp 11 is arranged on the back side 1b of the circuit board 1; the back-lit LED lamp 11 is arranged on the front side 1a of the circuit board 1, and the circuit board 1 is provided with an opening 13 connecting the front side 1a and the back side 1b of the circuit board 1 at the back-lit LED lamp 11; the jack 23 is arranged opposite to the back-lit LED lamp 11.

[0020] By adopting the above technical solution, in the present invention, a multi-segment light guide 6 is used to guide the light of the back-lit LED to the front side 1a for illumination, and at the same time, the gear structure of the knob body 3 is used to drive the light guide 6 to rotate, and synchronously drive the potentiometer 2 to rotate, and the potentiometer 2 collects the knob angle signal, thereby achieving the purpose of gear change, so as to adjust the air conditioning temperature or air volume. Among them, the back-lit LED light 11 irradiates light to the back side 1b of the circuit board 1, and the light guide 6 transmits light to the knob cover 4. In addition, as the knob cover 4 rotates, the light guide 6 will also rotate in the arc hole 12, and the light guide 6 drives the inner embedded part 22 to rotate relative to the main body 21, so that the potentiometer 2 can collect signals to achieve the functional adjustment of the gear.

[0021] As an improved specific implementation method, a receiving portion 51 is provided on the outer side of the knob seat 5, and a receiving groove 52 for receiving the connecting section 8 is provided on the receiving portion 51; a plurality of groups of positioning grooves 53 are provided on the receiving portion 51 on both sides of the receiving groove 52, and corresponding positioning columns 81 are provided at positions corresponding to the positioning grooves 53 on the connecting section 8; a limiting opening 91 is provided on the conducting section 9, and a receiving space 42 is provided inside the knob cover 4 corresponding to the light emitting hole 41, and two side limiting blocks 43 for limiting the conducting section 9 and a limiting protrusion 44 located at the limiting opening 91 are provided in the receiving space 42.

[0022] By adopting the above technical solution, the accommodating groove 52 is used to accommodate the connecting section 8, and the coordinated arrangement of the positioning column 81 and the positioning groove 53 can realize the stable positioning of the connecting section 8 in the accommodating groove 52. The arrangement of the limiting block 43 and the limiting protrusion 44 inside the accommodating space 42 can realize the good positioning of the conducting section 9.

[0023] As an improved specific implementation method, the bending section 7, the connecting section 8 and the conducting section 9 are fixed or integrally arranged. Of course, the bending section 7, the connecting section 8 and the conducting section 9 can also be separately connected and arranged. The specific embodiment of the present invention adopts a separate connection setting; a connector 23 is formed at one end of the connecting section 8 close to the bending section 7, and a connector section inserted into the connector 23 is provided on the bending section 7.

[0024] By adopting the above technical solution, the bending section 7, the connecting section 8 and the conducting section 9 are separately connected and arranged, which is convenient for production and manufacturing, and the installation matching degree is higher, which is convenient for installation and assembly. By setting the connector hole 23 and the connector section, the diameters of the connector hole 23 and the connector section are larger than the connecting section 8 and the bending section 7, which can increase the local strength of the connection.

[0025] As an improved specific implementation manner, a protective cover 14 is installed on the back side 1 b of the circuit board 1 below the potentiometer 2 , and the curved section 7 passes through the protective cover 14 .

[0026] By adopting the above technical solution, the provision of the protective cover 14 can play a good protective role for the potentiometer 2, and the provision of a hole on the protective cover 14 for the curved section 7 to pass through can also play a certain guiding role for the curved section 7.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A knob structure with a rotatable multi-segment light guide, characterized in that: include: A circuit board (1) is provided with a back-lit LED lamp (11) and an arc-shaped hole (12) is opened on the circuit board, and the arc-shaped hole (12) is arranged through the front side (1a) and the back side (1b) of the circuit board (1); A potentiometer (2) is arranged on the back side (1b) of the circuit board (1), and comprises a main body (21) mounted on the circuit board (1) and an embedded part (22) rotatably arranged relative to the main body (21), wherein a plug hole (23) is arranged on the embedded part (22); A knob body (3) is arranged above the circuit board (1), and comprises a fixed base (31) and a knob cover (4) and a knob seat (5) which are arranged in linkage, wherein the knob seat (5) is arranged to rotate relative to the fixed base (31), and a light outlet hole (41) is arranged on the knob cover (4); The light guide (6) comprises a curved section (7), a connecting section (8) and a conducting section (9); the curved section (7) is arranged through the arc hole (12); one end of the curved section (7) is inserted into the insertion hole (23) and is linked with the embedded part (22) and is arranged opposite to the back-lit LED lamp (11); the other end of the curved section (7) is connected to the connecting section (8); the connecting section (8) is positioned and arranged on the knob seat (5); the conducting section (9) is positioned and arranged on the knob cover (4) and is partially located in the light exit hole (41); and the conducting section (9) is connected to one end of the connecting section (8) away from the curved section (7).

2. The knob structure with a rotatable multi-segment light guide according to claim 1, characterized in that: The backlight LED lamp (11) is arranged on the back side (1b) of the circuit board (1).

3. The knob structure with a rotatable multi-segment light guide according to claim 1, characterized in that: The backlit LED lamp (11) is arranged on the front side (1a) of the circuit board (1), and an opening (13) connecting the front side (1a) and the back side (1b) of the circuit board (1) is arranged on the circuit board (1) at the backlit LED lamp (11).

4. The knob structure with a rotatable multi-segment light guide according to claim 2 or 3, characterized in that: The jack (23) is arranged opposite to the back-lit LED lamp (11).

5. The knob structure with a rotatable multi-segment light guide according to claim 4, characterized in that: An accommodating portion (51) is arranged on the outer side of the knob seat (5), and an accommodating groove (52) for accommodating the connecting section (8) is arranged on the accommodating portion (51).

6. The knob structure with a rotatable multi-segment light guide according to claim 5, characterized in that: A plurality of groups of positioning grooves (53) are provided on the receiving portion (51) at both sides of the receiving groove (52), and matching positioning columns (81) are provided on the connecting section (8) at positions corresponding to the positioning grooves (53).

7. The knob structure with a rotatable multi-segment light guide according to claim 6, characterized in that: A limiting opening (91) is provided on the conducting section (9), and an accommodating space (42) is provided inside the knob cover (4) corresponding to the light exit hole (41). Two side limiting blocks (43) for limiting the conducting section (9) and a limiting protrusion (44) located at the limiting opening (91) are provided in the accommodating space (42).

8. The knob structure with a rotatable multi-segment light guide according to claim 7, characterized in that: The bending section (7), the connecting section (8) and the conducting section (9) are fixed or integrally arranged.

9. The knob structure with a rotatable multi-segment light guide according to claim 7, characterized in that: A plug hole (23) is formed at one end of the connecting section (8) close to the curved section (7), and a plug section inserted into the plug hole (23) is provided on the curved section (7).

10. The knob structure with a rotatable multi-segment light guide according to claim 9, characterized in that: A protective cover (14) is installed on the back side (1b) of the circuit board (1) below the potentiometer (2), and the bent section (7) passes through the protective cover (14).

Images