Operating knob device

Abstract

The operating knob device (10) includes: an annular retaining member (20); an annular rotating member (25) disposed in the retaining part (20a) in a manner that allows rotation about an axis (A); an annular knob (30) that is allowed to move relative to the rotating member (25) in a direction along the axis (A) and is restricted to move relative to the rotating member (25) in a circumferential direction centered on the axis (A); a first transmission member (36) disposed in conjunction with the knob (30) and moving along the axis (A), and having conductivity; a second transmission member (38) mounted integrally with the rotating member (25) and having conductivity; and a resin film (50) sandwiched between the first transmission member (36) and the display panel (1), and between the second transmission member (38) and the display panel (1). This improves the transmittance of pressing and rotating operations.

Description

Technical Field

[0001] This invention relates to an operating knob device. Background Technology

[0002] For in-vehicle products such as navigation devices or central displays, display panels with capacitive touch detection are typically used. Operating these products requires touching a designated operating area on the smooth, non-protruding display panel with your finger; therefore, users need to visually confirm the location of this area.

[0003] Patent Document 1 discloses an operation knob device disposed on the surface of a display panel. The operation knob device includes a retainer fixed to the display panel, a press-type button, and a rotary knob. The electrostatic capacitance of the display panel changes due to the proximity of a transmission member within the button, thus the display panel can detect button press operations. The location of the change in electrostatic capacitance moves due to the transmission member within the knob, thus the display panel can detect knob rotation operations. The operation knob device protrudes from the display panel, allowing the user to operate the vehicle-mounted product without viewing the display panel.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: International Publication No. 2015 / 174092

[0007] In the operation knob device of Patent Document 1, a resin retaining member is sandwiched between the transmission member and the display panel, thus minimizing changes in the electrostatic capacitance of the display panel caused by the transmission member. Therefore, the operation knob device of Patent Document 1 has room for improvement in terms of the detectability of operation based on the display panel, i.e., the transmittance of operation based on the transmission member. Summary of the Invention

[0008] The objective of this invention is to provide an operating knob device that improves the transmissibility of pressing and rotating operations.

[0009] One aspect of the present invention provides an operating knob device comprising: an annular retaining member having an annular retaining portion and disposed adjacent to the display panel such that the axis of the retaining portion intersects with the display panel; an annular rotating member having a first end opposite to the display panel and a second end located on the opposite side of the display panel relative to the first end, and disposed in the retaining portion such that it is allowed to rotate about the axis; an annular knob disposed at the second end of the rotating member such that it is allowed to move relative to the rotating member in a direction along the axis and is restricted to move relative to the rotating member in a circumferential direction centered on the axis; a first transmission member disposed at the first end of the rotating member such that it moves along the axis in conjunction with the knob and is conductive; a second transmission member mounted at the first end such that it is integrally rotatable with the rotating member and is conductive; and a resin film covering the display panel side of the first transmission member and the second transmission member.

[0010] Compared to the walls of injection-molded resin articles, the film is thinner and allows for easier charge passage, thus increasing the electrostatic capacitance of the display panel 1, which changes due to the conductivity of the first or second transfer member. Therefore, the detectability of the display panel, i.e., the transmittance of knob operation, can be improved. Furthermore, even if, for example, the user is wearing gloves made of insulating material, the display panel can detect knob operation via the first or second transfer member.

[0011] Specifically, when the knob is pressed, the first transmission member disposed on the first end of the rotating member moves integrally toward the film attached to the display panel. For the display panel, the electrostatic capacitance changes due to the proximity of the conductive first transmission member, thus detecting the knob pressing operation. When the knob is rotated, the rotating member and the second transmission member mounted on the first end of the rotating member rotate integrally. For the display panel, the position changes due to the rotation of the conductive second transmission member, thus detecting the knob rotation operation.

[0012] Because the membrane prevents the first and second transmission members from contacting the display panel, damage to the display panel caused by knob operation can be prevented. Furthermore, it reduces noise generated by the collision between the first transmission member and the display panel during knob pressing.

[0013] Invention Effects

[0014] In the operating knob device of the present invention, the transmittance of the knob's pressing and rotating operations can be improved. Attached Figure Description

[0015] Figure 1 This is a perspective view of an operation knob device according to an embodiment of the present invention, arranged on a display panel.

[0016] Figure 2A This is a cross-sectional view of the operation knob device according to the first embodiment.

[0017] Figure 2B This is a cross-sectional view of the control knob device that has been pressed.

[0018] Figure 3 yes Figure 2A An exploded perspective view of the operating knob device.

[0019] Figure 4 yes Figure 3 An exploded perspective view of the retainer, ring member, and membrane.

[0020] Figure 5 yes Figure 3 An exploded perspective view of the rotating component, the first transmission component, the second transmission component, and the knob.

[0021] Figure 6 It is an exploded 3D view of the rotating parts, force-applying components, and stabilizers.

[0022] Figure 7 This is an exploded perspective view of the rotating component, the first transmission component, and the second transmission component when viewed from the display panel side.

[0023] Figure 8 This is a cross-sectional view showing the configuration structure of the second transmission member.

[0024] Figure 9 This is a front view showing the configuration of the stabilizer relative to the knob.

[0025] Figure 10 This is a cross-sectional view of the operation knob device according to the second embodiment.

[0026] Figure 11 yes Figure 10 An exploded perspective view of the retainer and the membrane.

[0027] Figure 12 This is a cross-sectional view of the operation knob device according to the third embodiment.

[0028] Figure 13 yes Figure 12 An exploded perspective view of the retainer, ring member, and membrane.

[0029] Figure 14 This is a cross-sectional view of the operation knob device according to the fourth embodiment.

[0030] Figure 15 yes Figure 14 An exploded perspective view of the retainer and the membrane.

[0031] Figure 16 This is a cross-sectional view of the operation knob device according to the fifth embodiment.

[0032] Figure 17 This is a perspective view showing the membrane of the operating knob device according to the sixth embodiment.

[0033] Figure 18 This is a perspective view showing the membrane of the operating knob device according to the seventh embodiment.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1...Display panel; 10...Operating knob device; 20...Retaining member; 20a...Retaining part; 20b...Protrusion; 20c...Engaging groove; 20d...Step part; 21...Opening part; 25...Rotating member; 25a...First end; 25b...Second end; 25c...Flange part; 25d...Mounting hole; 25e...Through hole; 25f...Configuration part; 25g...Through hole; 25h...First positioning rib; 25i... 25j... second positioning rib; 25k... mounting part; 251... through hole; 25m... recess; 25n... recess; 25o... sliding groove; 25r... block; 26... opening; 27... spring; 28... engaging member; 30... knob; 30a... inner wall; 30b... outer wall; 30c... end wall; 30d... open part; 30e... protrusion; 30f... retaining part; 30g... retaining part Part; 30h... through slot; 30i... partition; 30j... limiting part; 31... opening; 33... force-applying member; 33a... base; 33b... protrusion; 33c... head; 35... transmission member; 36... first transmission member; 36a... first end; 36b... second end; 36c... protrusion; 37... screw; 38... second transmission member; 39... retaining member; 39a... recess; 39b... 39c...Claw portion; 40...Spring; 45...Ring member; 45a...Base; 45b...Protrusion; 46...Opening; 50...Membrane; 50a...Wall portion; 50b...Wall portion; 50c...Through hole; 50d...Continuous portion; 51...Opening; 52a, 52b, 52c...Adhesive layer; 55...Stabilizer; 55a...Base; 55b...Sliding portion; 55c...Arm portion; A...Axis. Detailed Implementation

[0036] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0037] (First Implementation)

[0038] Figure 1 as well as Figure 2A The first embodiment of the present invention is shown, featuring an operation knob device 10. The display panel 1 equipped with the operation knob device 10 has a touch detection function that detects user operations by means of changes in electrostatic capacitance, and is mounted on in-vehicle products such as navigation devices or central displays.

[0039] like Figure 1 As shown, the operation knob device 10 is disposed in a designated operation area of ​​the display panel 1, protruding from the display panel 1 toward the interior of the vehicle. The operation knob device 10 is generally circular in shape and is arranged such that its axis A extends orthogonally relative to the display panel 1. The operation knob device 10 includes a knob (operation part) 30, and transmits the pressing and rotating operations of the knob 30 to the display panel 1.

[0040] like Figure 2A as well as Figure 3 As shown, the operation knob device 10 includes a holding member 20, a rotating member 25, a knob 30, a force-applying member 33, a transmission member 35, a ring member 45, and a membrane 50. The operation knob device 10 is fixed to the surface of the display panel 1 by the membrane 50 having an adhesive layer 52a. In this embodiment, the transmission member 35 includes a first transmission member 36 for transmitting the pressing operation of the knob 30 and a second transmission member 38 for transmitting the rotating operation of the knob 30.

[0041] The retaining member 20 and the ring member 45 are fixed to the film 50 adjacent to the display panel 1. The rotating member 25 is disposed on the retaining member 20 in a manner allowing rotation about axis A. The knob 30 is mounted on the rotating member 25 in a manner allowing linear movement along axis A, and integrally causes the rotating member 25 to rotate about axis A. A force-applying member 33 is disposed between the rotating member 25 and the knob 30, applying force to the knob 30 in a direction away from the display panel 1. A first transmission member 36 is mounted on the knob 30 and moves along axis A in conjunction with the linear movement of the knob 30. A second transmission member 38 is mounted on the rotating member 25 and rotates integrally with the rotating member 25.

[0042] like Figure 2BAs shown, when the knob 30 is pressed towards the display panel 1, the first transmission member 36 moves linearly towards the membrane 50. For the display panel 1, the electrostatic capacitance changes due to the proximity of the conductive first transmission member 36, thus detecting the pressing operation of the knob 30. When the hand is removed from the knob 30, the knob 30 and the first transmission member 36 move away from the display panel 1 under the action of the force-applying member 33. For the display panel 1, the release of the pressing operation is detected because the change in electrostatic capacitance caused by the first transmission member 36 disappears. During the pressing operation of the knob 30, the second transmission member 38 remains close to the display panel 1, and the area in the display panel 1 where the electrostatic capacitance changes due to the second transmission member 38 remains unchanged.

[0043] When in Figure 2A When the knob 30 is rotated in the specified state, the rotating member 25 and the second transmission member 38 rotate together with the knob 30 in the same direction. For the display panel 1, the rotation of the knob 30 can be detected because the position where the electrostatic capacitance changes due to the rotation of the conductive second transmission member 38 moves (rotates). When the rotation stops, the rotation of the rotating member 25 and the second transmission member 38 also stops. For the display panel 1, the position where the electrostatic capacitance changes stops can be detected, thus detecting the cessation of the rotation operation. The display panel 1 can detect the execution, cessation, or adjustment amount of the user-desired function by detecting the position where the change in electrostatic capacitance stops. During the rotation of the knob 30, the first transmission member 36 rotates together but remains away from the display panel 1; therefore, the electrostatic capacitance of the display panel 1 does not change due to the first transmission member 36.

[0044] Next, the components of the operating knob device 10 will be described in detail. It should be noted that in the following description, the side of the film 50 closest to the display panel 1 will sometimes be referred to as the outer side of the vehicle, and the side of the end wall portion 30c of the knob 30 furthest from the display panel 1 will sometimes be referred to as the inner side of the vehicle.

[0045] like Figure 3 as well as Figure 4 As shown, the retainer 20 is fixed to the outer periphery of the film 50 and holds other components relative to the display panel 1. The retainer 20 is made of an insulating resin (e.g., ABS). The retainer 20 is an annular cylindrical body with an opening (internal space) 21 that exposes a portion of the display panel 1.

[0046] A circular retaining portion 20a is provided on the inner periphery of the retaining member 20. This retaining portion 20a protrudes radially inward, restricting the movement of the rotating member 25 outward along axis A and holding the rotating member 25 so that it can rotate about axis A. The retaining member 20 is disposed on the display panel 1 such that the axis A of the retaining portion 20a extends orthogonally relative to the display panel 1. On the inner periphery of the retaining member 20, a plurality of triangular prism-shaped protrusions 20b protruding radially inward are arranged circumferentially adjacent to the retaining portion 20a on the inner side of the vehicle. Engaging grooves 20c are formed between adjacent protrusions 20b in the circumferential direction for engagement with the engaging member 28 described later. The inner end of the protrusion 20b is located on the outer side of the vehicle than the inner end of the retaining member 20, and a step portion 20d is formed through the inner end of these protrusions 20b.

[0047] like Figure 3 as well as Figure 5 As shown, the rotating member 25 is an annular plate having an opening (internal space) 26 communicating with the opening 21 and centered on axis A. The rotating member 25 is made of an insulating resin (e.g., PBT). See also... Figure 2A The rotating member 25 has a first end 25a disposed on the outer side of the vehicle and opposite to the film 50 (display panel 1), and a second end 25b disposed on the inner side of the vehicle and located on the side opposite to the film 50. The rotating member 25 is disposed within the holding portion 20a, such that the first end 25a abuts against the holding portion 20a, and the second end 25b is located at a position coplanar with the inner end of the holding member 20.

[0048] The outer diameter of the rotating member 25 is larger than the inner diameter of the retaining portion 20a, and smaller than the diameter of the imaginary circle (not shown) connecting the front ends of the plurality of protrusions 20b. A flange portion 25c is provided at the end of the rotating member 25 on the second end 25b side. This flange portion 25c protrudes radially outward and is disposed on the stepped portion 20d of the retaining member 20. The outer diameter of the flange portion 25c is larger than the diameter of the imaginary circle connecting the front ends of the plurality of protrusions 20b, and smaller than the inner diameter of the stepped portion 20d. Therefore, the rotating member 25 can rotate about axis A inside the retaining member 20.

[0049] like Figure 3As shown, a mounting hole 25d, consisting of a radially inwardly recessed circular cross-section, is provided on the outer periphery of the rotating member 25. A spring 27 and a spherical engaging member 28 are disposed within the mounting hole 25d. The diameter of the engaging member 28 is smaller than the diameter of the mounting hole 25d, and greater than the radial depth of the engaging groove 20c. When the rotating member 25 rotates relative to the retaining member 20, the engaging member 28 moves into the mounting hole 25d under the action of the inclined surface of the protrusion 20b, causing the spring 27 to contract. The engaging member 28, exerted outward force by the spring 27, engages with the engaging groove 20c, thereby holding the rotating member 25 relative to the retaining member 20 at a predetermined rotational angle position.

[0050] Reference Figure 2A The rotating component 25 is provided with a through hole 25e for allowing the knob 30 to move along axis A. (See reference...) Figure 6 A mounting portion 25f for mounting the force-applying member 33 and a recess 25n for mounting the stabilizer 55 (described later) are provided on the second end 25b side of the rotating member 25. (See reference...) Figure 7 The rotating member 25 has positioning ribs 25h and 25i for supporting the first transmission member 36 and a mounting part 25k for mounting the second transmission member 38. These components will be described in detail later.

[0051] like Figure 3 as well as Figure 5 As shown, the knob 30 is an annular cover with an opening 31 centered on axis A. This opening 31 communicates with the opening 21, thereby enabling visual identification of a portion of the display panel 1. The knob 30 is made of an insulating resin (e.g., PC / ABS). The knob 30 is positioned on the second end 25b side of the rotating member 25 in a manner that allows relative movement with respect to the rotating member 25 in the direction along axis A, but restricts relative movement with respect to the rotating member 25 in the circumferential direction centered on axis A.

[0052] Specifically, such as Figure 2A as well as Figure 5 As shown, the knob 30 has a conical inner wall portion 30a that divides into an opening 31, and a conical outer wall portion 30b that surrounds the outer side of the inner wall portion 30a. The inner wall portion 30a is disposed in the openings 21 and 26 of the retainer 21 and the rotating member 25 at the innermost position. The outer wall portion 30b is disposed on the outer side of the retainer 20 at the outermost position. The inner wall portion 30a and the outer wall portion 30b are concentric cylinders centered on axis A.

[0053] The inner wall portion 30a and the outer wall portion 30b are each sealed off on their inner side by an end wall portion 30c connected to them. The outer side ends of the inner wall portion 30a and the outer wall portion 30b are each open portions 30d. That is, an opening 31 is formed in the end wall portion 30c connected to the outer wall portion 30b, which allows for visual recognition of a portion of the display panel 1 through the opening 21, and the inner wall portion 30a is connected to the edge of the opening 31.

[0054] The inner wall portion 30a and the outer wall portion 30b are inclined in a manner that they move away from each other as they approach the opening portion 30d from the end wall portion 30c. The diameter of the outer end of the inner wall portion 30a located on the opening portion 30d side is smaller than the inner diameter of the rotating member 25, and the outer end of the inner wall portion 30a protrudes outward from the vehicle side beyond the rotating member 25. The diameter of the outer end of the outer wall portion 30b located on the opening portion 30d side is larger than the outer diameter of the retainer 20, and the outer end of the outer wall portion 30b protrudes outward from the vehicle side beyond the rotating member 25. The majority of the retainer 20 and the rotating member 25 are housed inside the inner wall portion 30a, the outer wall portion 30b, and the end wall portion 30c.

[0055] Next, refer to Figure 2A as well as Figure 5 A cylindrical protrusion (connecting portion) 30e is provided on the end wall portion 30c, penetrating the rotating member 25 and protruding towards the open portion 30d (outer side of the vehicle). Multiple protrusions 30e are provided at circumferential intervals relative to the end wall portion 30c (three in this embodiment). The total length of the protrusion 30e from the end on the end wall portion 30c side to the end on the open portion 30d side is longer than the thickness of the rotating member 25 from the second end 25b to the first end 25a, and shorter than the total length of the inner wall portion 30a.

[0056] like Figure 2A as well as Figure 7 As shown, the rotating member 25 is provided with through holes 25e corresponding to the plurality of protrusions 30e respectively. (Refer to...) Figure 6 The inner side of the through-hole 25e spatially communicates with the recess 25n for which the stabilizer 55 is disposed. The outer diameter of the through-hole 25e is larger than that of the protrusion 30e, allowing the protrusion 30e to pass through and enabling the protrusion 30e to move in the direction along axis A. Thus, relative movement of the knob 30 relative to the rotating member 25 is permitted in the direction along axis A. In addition, the protrusion 30e abuts against the wall of the through-hole 25e, thereby restricting the relative movement of the knob 30 relative to the rotating member 25 in the circumferential direction centered on axis A.

[0057] Reference Figure 5 as well as Figure 9The knob 30 also includes a limiting part 30j, which serves both as a guide for movement relative to the rotating member 25 along axis A and as a limiting function for movement relative to the rotating member 25 in the circumferential direction centered on axis A. Figure 9 The limiting portion 30j formed on the lower side is composed of a pair of ribs that also serve to support the stabilizer 55, with a [missing information] sandwiched between them. Figure 6 The block 25r shown has a configuration section 25f. Figure 9 The limiting portion 30j formed on the right side is composed of a pair of cylindrical ribs that protrude from a pair of protrusions respectively, with a [missing information] sandwiched between them. Figure 6 The block 25r shown has a configuration section 25f. Figure 9 The upper limiting portion 30j is composed of a rib that also supports the stabilizer 55 and an outer peripheral portion of the protrusion 30e, with a [missing information] sandwiched between them. Figure 6 The block 25r shown has a configuration section 25f.

[0058] like Figure 2A as well as Figure 2B As shown, the force-applying member 33 is disposed between the rotating member 25 and the knob 30, applying force to the knob 30 along axis A in a direction away from the rotating member 25. The force-applying member 33 is made of elastic rubber (e.g., silicone rubber) and is formed into a generally conical shape. However, the force-applying member 33 can also be a helical spring or a leaf spring, or it can be a resin spring with a shear structure provided on the rotating member 25.

[0059] Specifically, such as Figure 5 as well as Figure 6 As shown, multiple force-applying members 33 are arranged at equal intervals along the circumference on the second end 25b side of the rotating member 25 (four in this embodiment). Each force-applying member 33 has an annular base 33a, a protrusion 33b protruding from the base 33a in a conical shape, and a cylindrical head 33c provided at the front end of the protrusion 33b.

[0060] A mounting portion 25f for arranging a force-applying member 33 is provided at the second end 25b of the rotating member 25. The mounting portion 25f is a recess with a circular cross-section that allows the base 33a to be mounted, and is positioned at a different angle than the through hole 25e. The depth of the mounting portion 25f in the direction extending along axis A is shallower than the overall height of the force-applying member 33, and the head 33c of the force-applying member 33 protrudes from the second end 25b toward the knob 30. A through hole 25g extending through to the first end 25a is provided at the bottom of the mounting portion 25f. The through hole 25g allows for the... Figure 2A as well as Figure 2B The airflow is caused by the elastic deformation of the force-applying member 33. (See reference...) Figure 5A holding part 30f is provided on the inner surface of the end wall 30c of the knob 30 to hold the head 33c of the force-applying member 33.

[0061] like Figure 2A as well as Figure 5 As shown, the first transmission member 36 and the second transmission member 38 constituting the transmission member 35 are disposed between the inner wall portion 30a and the outer wall portion 30b of the knob 30, and are disposed on the first end 25a side, i.e., between the rotating member 25 and the membrane 50. The first transmission member 36 is mounted on the knob 30, and the second transmission member 38 is mounted on the rotating member 25. By pressing the knob 30, the first transmission member 36 moves along the axis A in conjunction, but the second transmission member 38 does not move. By rotating the knob 30, the first transmission member 36 rotates integrally, and the second transmission member 38 rotates integrally via the rotating member 25. That is, the first transmission member 36 moves relative to the second transmission member 38 along the axis A, but does not move relative to the second transmission member 38 in the circumferential direction centered on the axis A.

[0062] like Figure 5 as well as Figure 7 As shown, the first transmission member 36 is a C-shaped plate made of a conductive metal (e.g., brass). However, the first transmission member 36 can be made of any conductive material, and it can also be made of rubber or resin. The circumferential angle of the first transmission member 36 from the first end 36a to the second end 36b is approximately 270 degrees. The radial width of the first transmission member 36 is narrower than the radial width of the rotating member 25.

[0063] like Figure 2A As shown, the first transmission member 36 is connected to the protrusion 30e of the knob 30 by a screw (connecting member) 37. By fastening the screw 37, which passes through the through hole of the first transmission member 36, to the protrusion 30e, the knob 30 and the first transmission member 36 are maintained in an installed state relative to the rotating member 25. In addition, a plurality of (five in this embodiment) protrusions 36c are provided on the outer periphery of the first transmission member 36, which protrude radially outward and abut against the outer end face of the retaining portion 20a of the retaining member 20.

[0064] In the non-operated state of the knob 30, the protrusion 36c abuts against the retaining part 20a due to the force applied by the force-applying member 33, thereby causing the first transmission member 36 to retract to a position close to the first end 25a of the rotating member 25. Furthermore, due to the abutment between the protrusion 36c and the retaining part 20a, further movement of the knob 30, the rotating member 25, and the first transmission member 36 towards the interior of the vehicle is restricted. Figure 2B As shown, by pressing the knob 30, the first transmission member 36 advances along axis A to the position where it contacts the membrane 50.

[0065] Reference Figure 7 A pair of positioning ribs 25h and 25i are provided at the first end 25a of the rotating member 25 to assist in the configuration of the first transmission member 36 relative to the rotating member 25. The first positioning ribs 25h are provided in a circumferentially extending manner. The second positioning ribs 25i are provided in a generally U-shaped protrusion. Between the pair of positioning ribs 25h and 25i, a groove 25j is provided in the portion where the first transmission member 36 is configured, recessed from the outer side of the vehicle to the inner side of the vehicle.

[0066] like Figure 5 as well as Figure 7 As shown, the second transmission member 38 is an elliptical cylindrical plate made of a conductive metal (such as brass). However, the second transmission member 38 can be made of any conductive material, and it can also be made of rubber or resin.

[0067] The second transmission member 38 is disposed between the two ends 36a and 36b in a concentric circle with the first transmission member 36. The second transmission member 38 is disposed at the first end 25a of the rotating member 25 via a retaining member 39 and is exerted outward force by a spring 40. Figure 2A As shown, in the non-operational state of the knob 30, the second transmission member 38 protrudes from the first end 25a relative to the first transmission member 36 and abuts against the membrane 50.

[0068] like Figure 7 as well as Figure 8 As shown, the retaining member 39 has an elliptical cylindrical recess 39a corresponding to the shape of the second transmission member 38. The depth of the recess 39a in the direction extending along axis A is shallower than the thickness of the second transmission member 38, which protrudes from the end face of the retaining member 39. A pair of locking tabs 39b protruding inwards are provided on the retaining member 39. The locking tabs 39b have claw portions 39c for preventing disengagement from the rotating member 25. A protrusion 39d for one end of the spring 40 is provided at the center of the inner side of the retaining member 39.

[0069] Next, refer to Figure 7 as well as Figure 8A mounting portion 25k for mounting a retaining member 39 is provided at the first end 25a of the rotating member 25. The mounting portion 25k is provided adjacent to the outer side of one of the multiple configuration portions 25f. The mounting portion 25k has a pair of through holes 251 through which a locking piece 39b passes, and a recess 25m for mounting a spring 40. The through holes 251 are provided adjacent to positioning ribs 25h and 25i, respectively. The inner side of the through holes 251 communicates spatially with the recess 25n for mounting a stabilizer 55. The recess 25m is provided between the pair of through holes 251 in a recessed manner from the outer side to the inner side of the vehicle. Between the edge of the through hole 251 located on the second end 25b side and the claw portion 39c, a gap is ensured that allows the retaining member 39 to move relative to the rotating member 25 in the direction along axis A.

[0070] like Figure 3 as well as Figure 4 As shown, the ring member 45 is a cylindrical ring with an opening 46 centered on axis A. The opening 46 communicates with openings 21 and 31, exposing a portion of the display panel 1. The ring member 45 is made of an insulating resin (e.g., ABS). The ring member 45 is disposed between the inner circumferential surface of the opening 26 of the rotating member 25 and the inner wall portion 30a; that is, the ring member 45 is disposed inside the rotating member 25 and outside the inner wall portion 30a.

[0071] The ring member 45 has a base 45a fixed to the inner periphery of the membrane 50, and a protrusion 45b protruding from the outer periphery of the base 45a into the knob 30. The front end of the protrusion 45b located inside the vehicle is... Figure 2A In the non-operating state, the knob 30 shown is located on the side of the end wall 30c, closer to the open portion 30d of the knob 30.

[0072] Next, refer to Figure 3 as well as Figure 4 The film 50 is an annular component centered on axis A, having an opening 51 that exposes a portion of the display panel 1. The film 50 is made of a resin (e.g., PET) with excellent insulation, water resistance, and heat resistance. The film 50 is thinner than the minimum wall thickness of a resin molded article that can be manufactured by injection molding. Specifically, the thickness of the film 50 is preferably 0.05 mm or more and 0.2 mm or less, and in this embodiment, it is 0.1 mm. The film 50 is fixed to the outer end face of the retainer 20 and the ring member 45, and covers the display panel 1 side of the transfer member 36 and the second transfer member 38.

[0073] The outer diameter of the membrane 50 is the same as the outer diameter of the largest portion of the retainer 20, and the inner diameter of the membrane 50 is the same as the inner diameter of the smallest portion of the ring member 45. (Refer to...) Figure 2AIn the film 50, an adhesive layer 52a is provided on the outer side of the vehicle opposite to the display panel 1. An adhesive layer 52b is provided on the inner side of the film 50 to fix the retainer 20 to the outer periphery, and an adhesive layer 52c is provided on the inner periphery to fix the ring member 45.

[0074] like Figure 5 as well as Figure 6 As shown, the operating knob device 10 includes a stabilizer 55 that suppresses the tilt of the knob 30 relative to the rotating member 25 when a pressing operation is performed. Multiple stabilizers 55 are disposed between the rotating member 25 and the end wall portion 30c of the knob 30. In this embodiment, four stabilizers 55 are disposed at 90-degree intervals circumferentially around axis A.

[0075] Each stabilizer 55 has a base 55a, a pair of sliding portions 55b and a pair of arm portions 55c, and each stabilizer 55 is formed of wire.

[0076] like Figure 9 As shown, the base 55a is arranged adjacent to the radially outer side of the inner wall portion 30a. The base 55a of the adjacent stabilizer 55 extends in an orthogonal direction.

[0077] The base 55a is rotatably held in a retaining portion 30g that protrudes from the end wall portion 30c. The retaining portion 30g is provided near both ends of the base 55a in the longitudinal direction and has a pair of claws located at both ends of the base (wire) 55a and holding the base 55a.

[0078] The sliding portion 55b is continuous with the base 55a via the arm portion 55c and extends parallel to the base 55a. When viewed from the direction extending from axis A, the base 55a and the sliding portion 55b of the adjacent stabilizer 55 intersect in an orthogonal direction. That is, the base 55a of the first stabilizer 55 and the sliding portion 55b of the second stabilizer 55 adjacent to the first stabilizer 55 intersect.

[0079] like Figure 5 as well as Figure 6 As shown, the sliding portion 55b is disposed in the recess 25n formed at the second end 25b of the rotating member 25, and is held in the sliding groove 25o formed on the outer periphery of the rotating member 25.

[0080] The recess 25n is provided at four locations at different angles from the through hole 25e and the placement part 25f. The recess 25n is recessed from the inside of the vehicle to the outside of the vehicle and has a bottom surface that allows the sliding part 55b to move. The forming area of ​​the recess 25n, the forming area of ​​the through hole 25e, and the forming area of ​​the through hole 251 are spatially connected.

[0081] The sliding groove 25o is formed by an elongated hole that spatially communicates with the recess 25n and extends from the recess 25n to the outer peripheral surface of the rotating member 25. Two sliding grooves 25o are provided in each recess 25n, for a total of eight. A pair of sliding grooves 25o formed in a recess 25n extend in an orthogonal direction, accommodating sliding portions 55b of different stabilizers 55. By positioning the front end of the sliding portion 55b within the sliding groove 25o, movement of the sliding portion 55b along its second end 25b is permitted.

[0082] like Figure 6 as well as Figure 9 As shown, the arm portion 55c is continuous with the outer end of the base portion 55a and the inner end of the sliding portion 55b. The arm portion 55c extends in an orthogonal direction relative to the base portion 55a and the sliding portion 55b. As previously described, the base portion 55a is held on the knob 30 and the sliding portion 55b is held on the rotating member 25, thus the arm portion 55c is inclined relative to the bottom surface of the recess 25n. Through this inclination, the arms 55c of adjacent stabilizers 55 are arranged in three dimensions without interference.

[0083] It should be noted that the retaining part that holds the base 55a can also be provided on the rotating member 25, and the sliding groove that holds the sliding part 55b can be provided on the knob 30.

[0084] Next, the operation of the control knob device 10 will be explained.

[0085] like Figure 2A As shown, in the non-operating state of the knob 30, the knob 30 is held away from the rotating member 25 due to the force applied by the force-applying member 33. Consequently, the first transmission member 36, connected to the protrusion 30e, is located away from the membrane 50. Furthermore, the second transmission member 38 is held in contact with the membrane 50 due to the force applied by the spring 40.

[0086] In this non-operating state, the electrostatic capacitance of the portion of the display panel 1 opposite the first transmission member 36 does not change, while the electrostatic capacitance of the portion opposite the second transmission member 38 changes. However, the position where the electrostatic capacitance changes due to the second transmission member 38 is maintained at a predetermined position. Therefore, the display panel 1 can detect when the knob 30 is not operated.

[0087] When the knob 30 is pressed, it approaches the rotating member 25 against the force of the force-applying member 33. At this time, the base 55a of the stabilizer 55 is pressed due to the linear movement of the knob 30, and the sliding part 55b moves along the bottom surface of the recess 25n and the sliding groove 25o. As a result, the tilting of the knob 30 relative to the rotating member 25 is suppressed. In addition, due to the linear movement of the knob 30, the first transmission member 36 approaches or contacts the membrane 50 via the protrusion 30e.

[0088] Due to the pressing operation, the electrostatic capacitance of the display panel 1 changes not only in the portion opposite the second transmission member 38 but also in the portion opposite the first transmission member 36. Therefore, the area where the electrostatic capacitance of the display panel 1 changes is larger than in the non-operational state. By increasing this area of ​​electrostatic capacitance change, the display panel 1 can detect the pressing operation of the knob 30.

[0089] When the pressing operation stops, due to the force applied by the force-applying member 33, the knob 30 and the first transmission member 36 move inward relative to the rotating member 25. As a result, the change in electrostatic capacitance in the portion of the display panel 1 opposite the first transmission member 36 disappears, and therefore the area where the electrostatic capacitance changed is more localized compared to the pressing operation state. By reducing this area of ​​electrostatic capacitance change, the display panel 1 can detect the release of the pressing operation of the knob 30.

[0090] When the knob 30 is rotated, the second transmission member 38 rotates together with the rotating member 25. At this time, under the action of the force-applying member 33, the knob 30 is kept away from the rotating member 25, so the first transmission member 36 is also kept away from the membrane 50.

[0091] Due to the rotation operation, the electrostatic capacitance of the portion of the display panel 1 opposite to the first transmission member 36 remains unchanged, while the electrostatic capacitance of the portion opposite to the second transmission member 38 changes, but the position of the change rotates around axis A. Therefore, the display panel 1 can detect the rotation operation of the knob 30 and can detect the direction of rotation of the knob 30 (clockwise or counterclockwise).

[0092] When the rotation operation stops, the rotation of the rotating member 25 and the second transmission member 38 also stops. Therefore, the movement of the position in the display panel 1 where the electrostatic capacitance changes stops. Consequently, the display panel 1 detects the cessation of the rotation operation of the knob 30.

[0093] The operating knob device 10 configured as described above has the following characteristics.

[0094] Compared to the walls of injection-molded resin articles, the film 50 is thinner and allows for easier charge passage, thus increasing the electrostatic capacitance of the display panel 1, which changes due to the conductivity of the first or second transfer member 36. Therefore, the detectability of the display panel 1, i.e., the transmittance of knob operation, can be improved.

[0095] Furthermore, as in the operating knob device of Patent Document 1, by electrically connecting the knob, made of conductive material, to the first and second transmission members, and by having the human body contact the knob, a structure that does not increase the changing electrostatic capacitance is not required. Moreover, even if, for example, the user is wearing gloves made of insulating material, the display panel 1 can detect the operation of the knob 30 via the first transmission member 36 or the second transmission member 38.

[0096] Because the first transmission member 36 and the second transmission member 38 do not contact the display panel 1 due to the membrane 50, damage to the display panel 1 caused by the operation of the knob 30 can be prevented. Furthermore, the noise generated when the knob 30 is pressed due to the collision between the first transmission member 36 and the display panel 1 can be reduced.

[0097] The retaining member 20, the rotating member 25, and the knob 30 are formed in a ring shape, and a portion of the display panel 1 can be exposed through the openings 21, 26, and 31, thus ensuring the display area of ​​the display panel 1. In addition, since the first transmission member 36 and the second transmission member 38 are concentrated between the inner wall portion 30a and the outer wall portion 30b of the knob 30, the operating knob device 10 can be miniaturized.

[0098] The membrane 50 is annular, with a retainer 20 fixed to its outer periphery and a ring member 45 fixed to its inner periphery. Thus, the retainer 20 can prevent the intrusion of foreign matter (such as water and dust) from the outer periphery to the transfer members 36 and 38, and the ring member 45 can prevent the intrusion of foreign matter from the inner periphery to the transfer members 36 and 38. Furthermore, it can prevent malfunctions caused by unexpected assembly errors.

[0099] In detail, when the ring member 45 and the retainer 20 are not integrated due to the membrane 50, the ring member 45 and other assembly components (sub-assemblies) are assembled onto the display panel 1 by the operator at the delivery destination. If an error occurs in the assembly position, water or dust may enter through the gaps created by the error and adhere to the transfer members 36 and 38, potentially adversely affecting the detection of changes in electrostatic capacitance based on the display panel 1. Furthermore, if the knob 30 interferes with the ring member 45 due to assembly errors, there is a possibility of malfunctions such as the inability to properly press or rotate the knob 30. While providing a dedicated positioning tool can mitigate these malfunctions, it is difficult to eliminate them entirely.

[0100] In contrast, in this embodiment, the ring member 45 and the retainer 20 are separate components, but are integrated by the membrane 50. Therefore, all components, including the ring member 45, can be positioned in the operating area of ​​the display panel 1 in a single operation, thus preventing unexpected assembly errors. As a result, the intrusion of foreign objects and malfunctions associated with assembly errors can be eliminated.

[0101] (Second Implementation)

[0102] Figure 10 The operation knob device 10 of the second embodiment is shown. In this second embodiment, instead of... Figure 2A The ring member 45 shown in the first embodiment differs from the first embodiment in that the membrane 50 is provided with a wall portion 50a.

[0103] like Figure 11 As shown, the wall portion 50a is cylindrical and is formed within the inner circumference of the annular membrane 50 by deep drawing. (Refer to...) Figure 10 The diameter of the wall portion 50a is set to the dimension by which the wall portion 50a protrudes between the inner circumferential surface of the opening 26 of the rotating member 25 and the inner wall portion 30a of the knob 30. Furthermore, the amount by which the wall portion 50a protrudes from the body of the membrane 50 is its length between the inner circumferential surface of the rotating member 25 and the inner wall portion 30a of the knob 30. No [specific feature] is provided on the inner circumference of the membrane 50. Figure 4 The adhesive layer 52c used for the ring member 45 shown.

[0104] In the operating knob device 10 of this second embodiment, the same function and effect as in the first embodiment can be obtained. Furthermore, since the ring member 45 (see reference...) is replaced... Figure 2A The membrane 50 has an integrally formed cylindrical wall 50a, which effectively prevents foreign objects from entering the transmission members 36 and 38 from the inner periphery of the knob 30 without increasing the number of parts. In addition, the wall 50a of the membrane 50 is thinner and more flexible than the ring member 45, so even if it interferes with the knob 30 or the rotating member 25 due to assembly errors, it will not cause malfunctions.

[0105] (Third Implementation)

[0106] Figure 12 The operating knob device 10 of the third embodiment is shown. This third embodiment differs from the first embodiment in that a wall portion 50b is provided on the outer periphery of the membrane 50.

[0107] like Figure 13 As shown, the wall portion 50b is cylindrical and is formed on the outer periphery of the membrane 50 through deep drawing. Figure 13In the example, an adhesive layer 52b for retaining member 20 is provided on the outer periphery of the membrane 50, but this adhesive layer 52b may not be provided. (See reference...) Figure 12 The wall portion 50b protrudes outward from the outside of the retainer 20 and is fixed to the outer peripheral surface of the retainer 20 by fusion welding.

[0108] In the operating knob device 10 of this third embodiment, the same function and effect as in the first embodiment can be obtained. Furthermore, since a cylindrical wall portion 50b is integrally provided on the membrane 50, the intrusion of foreign objects from the outer periphery of the knob 30 to the transmission members 36 and 38 can be suppressed. Additionally, since the width (area) of the end face of the radially extending retainer 20 is relatively narrow, there is a possibility that the retainer 20 may detach from the membrane 50 when based on an adhesive layer 52b such as double-sided tape. However, by increasing the fixing area through the wall portion 50b, detachment and other adverse conditions can be effectively prevented.

[0109] (Fourth Implementation)

[0110] Figure 14 The operation knob device 10 according to the fourth embodiment is shown. In this fourth embodiment, when not in use Figure 2A The ring member 45 shown in the first embodiment differs from the first embodiment in that the membrane 50 is provided with the same wall portion 50a as in the second embodiment and the same wall portion 50b as in the third embodiment.

[0111] As mentioned earlier, the wall portion 50a needs to be located between the inner circumferential surface of the rotating member 25 and the inner wall portion 30a of the knob 30, while the wall portion 50b only needs to be able to be welded to the outer circumferential surface of the retaining member 20. Therefore, as Figure 15 As shown, the protrusion amount of the inner circumferential wall portion 50a of the membrane 50 is different from that of the outer circumferential wall portion 50b of the membrane 50. However, the protrusion amount of the inner circumferential wall portion 50a and the outer circumferential wall portion 50b can also be the same.

[0112] In the operating knob device 10 of this fourth embodiment, the same function and effect as in the first embodiment can be obtained. Furthermore, the number of components can be reduced, and the intrusion of foreign objects from the inward and outward transmission members 36, 38 of the knob 30 can be effectively suppressed.

[0113] (Fifth Implementation)

[0114] Figure 16 The operating knob device 10 of the fifth embodiment is shown. In this fifth embodiment, it differs from the second embodiment in that the knob 30 is provided with an annular through groove 30h that passes through the wall portion 50a.

[0115] The insertion slot 30h is provided at the outer end of the inner wall portion 30a of the knob 30. However, it is also possible to have the partition 30i, which is located at a distance from the inner wall portion 30a, protrude from the inner wall portion 30a and form the insertion slot 30h between them.

[0116] In the operating knob device 10 of this fifth embodiment, the same function and effect as in the second embodiment can be obtained. Furthermore, by means of the insertion slot 30h passing through the wall portion 50a, the intrusion of foreign objects from the inner periphery of the knob 30 to the transmission members 36, 38 can be effectively suppressed.

[0117] It should be noted that the structure in which the insertion slot 30h passes through the wall portion 50a can also be applied to the fourth embodiment. In addition, as long as the retainer 20 can be reliably fixed to the membrane 50 by the adhesive layer 52b, the wall portion 50b can be arranged at intervals relative to the outer peripheral surface of the retainer 20, and the insertion slot, which is provided on the outer wall portion 30b in the same manner as the insertion slot 30h, can pass through the wall portion 50b.

[0118] (Sixth Implementation Method)

[0119] Figure 17 A membrane 50 of the operating knob device according to a sixth embodiment is shown. In this sixth embodiment, the membrane 50 contains... Figure 2A The first embodiment differs from the first embodiment in that the contact position between the first transmission member 36 and the second transmission member 38 is provided with a through hole 50c that extends from one side to the other.

[0120] Through holes 50c extend radially relative to the annular membrane 50 and are provided at equal intervals along the circumference. In the radial direction of the membrane 50, the outer end of the through hole 50c is located closer to the inner side than the adhesive layer 52b disposed on the outer periphery. In the radial direction of the membrane 50, the inner end of the through hole 50c is located further outward than the adhesive layer 52c disposed on the inner periphery. The width of the through hole 50c in the circumferential direction of the membrane 50 is greater than... Figure 2A The first transmission member 36 and the second transmission member 38 shown are narrow in circumferential length.

[0121] Using the operating knob device of the membrane 50 according to the sixth embodiment, the same function and effect as the first embodiment can be achieved. Furthermore, since the portion of the membrane 50 with the through-hole 50c is not insulating, charge can pass through more easily. Therefore, the detectability of the display panel, i.e., the transmittance of knob operation based on the transmission member, can be improved.

[0122] (Seventh Implementation)

[0123] Figure 18The membrane 50 of the operating knob device according to the seventh embodiment is shown. This seventh embodiment differs from the sixth embodiment in that it has a through hole 50c extending circumferentially along the membrane 50.

[0124] Through hole 50c is provided in membrane 50 and Figure 2A The positions where the first transfer member 36 and the second transfer member 38 contact are shown. Multiple through holes 50c are provided circumferentially spaced relative to the annular membrane 50 (four in this embodiment), and are generally formed in a discontinuous (intermittent) circular shape. The width of the radially extending through holes 50c of the membrane 50 is greater than... Figure 2A The first transmission member 36 and the second transmission member 38 shown are narrow in the radial direction. Between adjacent through holes 50c in the circumferential direction, there is a continuous portion 50d that makes the inner and outer circumferential sides of the through hole 50c continuous.

[0125] The operating knob device of the membrane 50 using this seventh embodiment can achieve the same function and effect as the sixth embodiment.

[0126] It should be noted that the operating knob device 10 of the present invention is not limited to the structure of the above embodiment, but can be modified in various ways.

[0127] For example, the structure in which through holes 50c are provided on the membrane 50, as in the sixth or seventh embodiment, can also be applied to the membrane 50 of the first to fifth embodiments. Furthermore, the shape and number of through holes 50c are not limited to a structure extending radially or circumferentially, and can be changed as needed.

[0128] The membrane 50 is not limited to a circular shape; its inner and outer peripheries can also be polygonal. The shape of the inner periphery of the membrane 50 can also differ from the shape of the inner circumferential surface of the ring member 45, and the shape of the outer periphery of the membrane 50 can also differ from the shape of the outer circumferential surface of the retainer 20. The inner periphery of the membrane 50 can also protrude inward from the ring member 45, and the outer periphery of the membrane 50 can also protrude outward from the retainer 20.

[0129] The retainer 20 is not limited to a ring shape, as long as the inner or outer circumference of the part to which the rotating part 25 is disposed is circular. In addition, the retainer 20 and the retaining part 20a are not limited to a continuous structure in the circumferential direction, but can also be a discontinuous (intermittent) ring shape in the circumferential direction.

[0130] The retainer 20 is not limited to a circular shape; it may also have at least one of its outer and inner circumferential surfaces that is polygonal. For the knob 30, not only the shape of its outer circumference but also the shape of its inner circumference may be polygonal. The shape of the ring member 45 is also not limited to a circular shape and can be changed as needed.

[0131] The operation knob device 10 of the present invention can also be used in products other than vehicle-mounted products, as long as the product is equipped with a display panel 1 with touch detection function.

Claims

1. An operating knob device, wherein, The operating knob device includes: An annular retainer having an annular retaining portion and being disposed adjacent to the display panel such that the axis of the retaining portion intersects with the display panel; A ring-shaped rotating member having a first end opposite to the display panel and a second end located on the opposite side of the display panel relative to the first end, and is disposed in the holding portion in a manner that allows rotation about the axis; A ring-shaped knob is disposed on the second end side of the rotating member in a manner that allows relative movement relative to the rotating member in a direction along the axis and restricts relative movement relative to the rotating member in a circumferential direction centered on the axis. A first transmission member, which is disposed on the first end side of the rotating member in a manner that moves along the axis in conjunction with the knob, and is conductive; The second transmission member is mounted on the first end in a manner that allows it to rotate integrally with the rotating member, and is conductive; as well as A resin film covers the display panel side of the first and second transmission members and has a thickness thinner than the minimum wall thickness of a resin molded article that can be manufactured by injection molding, wherein the thickness of the resin film is 0.05 mm or more and 0.2 mm or less.

2. The operating knob device according to claim 1, wherein, The rotating component is disposed inside the retaining component. The knob has a cylindrical inner wall portion disposed inside the rotating member and a cylindrical outer wall portion disposed outside the retaining member. The first transfer member and the second transfer member are disposed between the inner wall portion and the outer wall portion.

3. The operating knob device according to claim 2, wherein, The operating knob device includes an annular ring member disposed between the first and second transmission members and the inner wall portion. The membrane is annular, with the retaining member fixed to the outer periphery and the ring member fixed to the inner periphery.

4. The operating knob device according to claim 2, wherein, The membrane is ring-shaped. An annular wall portion is provided on the inner periphery of the membrane, protruding between the first and second transmission members and the inner wall portion.

5. The operating knob device according to any one of claims 2 to 4, wherein, An annular wall portion is provided on the outer periphery of the membrane, protruding outward from the outside of the retainer and fixed to the outer peripheral surface of the retainer.

6. The operating knob device according to any one of claims 1 to 4, wherein, A through hole is provided on the membrane at the position where it contacts the first transfer member and the second transfer member.

7. The operating knob device according to claim 5, wherein, A through hole is provided on the membrane at the position where it contacts the first transfer member and the second transfer member.

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