JP3878071B2 - Operation unit of rice cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention relates to the structure of the operation part of a rice cooker (including a rice cooker).
[0002]
[Prior art]
As shown in FIG. 9, an operation unit 72 is provided on the front surface of the rice cooker body 71, and a plurality of switch buttons 73 made of a transparent synthetic resin are provided on the operation unit 72. The switch button 73 has a display portion 75 formed by insert molding of an opaque sheet in a recess on the back surface, leaving the outer peripheral edge 74, and the surface of the display portion 75 has “rice cooking”, “heat retention”, “cancel”, etc. Display is given. A switch operation projection 76 is provided on the back surface of the switch button 73, and the projection 76 faces the switch 81 on the operation board 79 through a transparent waterproof sheet 77 and a switch spacer 78.
[0003]
On the operation board 79, a light emitter 82 such as an LED and other electronic components are mounted. The light emitter 82 illuminates the back surface of the switch button 73. The display unit 75 is provided with a circular translucent part 83, and the user can see the light passing through the translucent part 83 from the outside of the switch button 73 (see arrow a in FIG. 9).
[0004]
[Problems to be solved]
However, according to the structure of the operation unit described above, the light of the light emitter 82 can be seen from the translucent part 83, but there is also a disadvantage that unnecessary light leaking outside from the outer peripheral edge 74 of the switch button 73 can also be seen ( (See arrow b in the figure).
[0005]
Then, this invention makes it a subject to prevent that the light of light-emitting bodies, such as LED, leaks from the outer periphery of a switch button, and to see only the light from a translucent part in the operation part of a rice cooker. .
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention attaches an operation board on which a switch, a light emitter and other electronic components are mounted inside the rice cooker body, and a plurality of the switches and the switch and the light emitter are opposed to each other. Each switch button is provided with an opaque display part leaving a transparent outer periphery, and a light-transmitting part is provided in the display part of the switch button facing the light emitter, each switch button being independent of the rice cooker body. In the operation part of the rice cooker that is exposed to the front side from the button hole, a light shielding sheet of a size that covers the entire range of each switch button is interposed on the back surface of the switch button, and the light transmittance of the switch button is inserted into the light shielding sheet. The structure which provided the translucent hole facing the part was employ | adopted.
[0007]
According to the above configuration, the light emitted from the light emitter is blocked by the light shielding sheet and does not leak from the outer peripheral edge of the switch button, and only the light passing through the light transmitting hole of the light shielding sheet passes through the light transmitting part of the switch button. Then, it goes out, that is, it can be seen from the outside.
[0008]
The light shielding sheet is formed by a single sheet facing a plurality of switch buttons, and a light shielding portion facing each switch button is formed to a size that covers the entire range of each switch button, and the light shielding portions are mutually connected. A configuration in which a cut is provided between them can be employed.
[0009]
If such a configuration is adopted, since there is only one light shielding sheet corresponding to a plurality of switch buttons, the handling thereof is convenient. Can be combined.
[0010]
In addition, a switch button without a translucent part is provided adjacent to a switch button having a translucent part among the plurality of switch buttons, and the light shielding part is also provided corresponding to the switch button without the translucent part. Configuration can be taken. In this case, since there is no light emitter facing the switch button without the light transmitting part, it seems that there is no light leakage, but the light of the light emitter corresponding to the adjacent switch button does not have the light transmitting part. It is possible to leak from the switch button. In order to prevent such leakage, a switch button without a translucent part is also provided with a corresponding light-shielding part.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. The rice cooker shown in FIG. 1 has a jar body 1 and a lid 2 attached to the jar body 1 so as to be freely opened and closed by a hinge. The jar body 1 includes a body member 3 and a bottom member 4 as shown in FIG. It consists of. At the front end portion of the body member 3, an operation portion 5 that rises at the same height as the front edge of the lid 2 is provided. A liquid crystal display unit 6 and various rice cooking condition setting keys 7 are provided on the upper surface of the lid 2.
[0012]
As shown in FIGS. 2 and 3, the operation unit 5 includes an operation recess 12 in the body member 3, and the switch buttons 8, 9, and 10 are provided in the operation recess 12. The switch buttons 8, 9, 10 are exposed from the three button holes of the operation panel 5a covering the surface of the operation recess 12, and a lid opening / closing hook 11 is provided at the center of the upper edge of the operation panel 5a.
[0013]
As shown in FIG. 5, the switch buttons 8, 9, and 10 are arranged with a switch button 8 at the center, a switch button 9 on the left side, and a switch button 10 on the right side when viewed from the front of the jar body 1. Both are oblong and long in the left-right direction, the center switch button 8 is the longest, and the left and right switch buttons 9, 10 are substantially the same length.
Hinge shafts 14, 14 in the left-right direction (oval major axis direction) are provided between the distal ends of a pair of arms 13, 13 projecting toward the hook 11 at the left and right ends of the switch button 8 at the center. In addition, the left and right switch buttons 9, 10 have their major axes inclined toward the hook 11 by a certain angle θ with respect to the horizontal line. Further, in a plan view (see FIG. 5B), the entire body is bent according to the curved surface of the body member 3.
[0014]
The left switch button 9 is provided with hinge shafts 15 and 15 projecting on both sides in the short axis direction, and the hinge shaft 15 on the hook 11 side and the hinge shaft 14 on the left side of the switch button 8 in the central portion are provided. They are connected by a flexible linear connecting part 16.
[0015]
The right switch button 10 is provided with a hinge shaft 18 in the longitudinal direction of the switch button 10 between the tips of a pair of arms 17 provided on the side edge on the hook 11 side. The hinge shaft 18 and the right hinge shaft 14 of the central switch button 8 are connected by a flexible linear connecting portion 19 similar to the above.
[0016]
Further, on the back surface of the side edge opposite to the hook 11 of the switch button 8 in the central portion, projections 21 and 21 for switch operation are provided separately on the left and right. Further, in the switch button 9 on the left side, on both sides of the hinge shafts 15 and 15, the switch operation protrusions 22 are respectively formed on the back surface of the side edge opposite to the hook 11 and the back surface of the end portion on the switch button 8 side. , 22 '. Further, in the right switch button 10, a switch operating projection 23 is provided on the back surface of the central portion of the side edge opposite to the hook 11.
[0017]
The switch buttons 8, 9, 10 are connected and integrated by the connecting portions 16, 19, and as a result, the whole is integrally formed of a transparent resin to form a one-part button member 24. At the time of molding, the display unit 25 (see FIG. 6) is formed by insert-molding opaque sheets on the back surfaces of the switch buttons 8, 9, and 10, respectively. As shown in FIG. 6, the characters “cooked rice” and “reheat” are displayed in two upper and lower rows on the display portion 25 of the switch button 8 in the center portion, and the vertical line in the center portion is displayed on the left display portion 25. "Heat insulation" is displayed on the left half and "Good night heat insulation" is displayed on the right half. In addition, on the display unit 25 of the switch button 10 on the right side, characters “Takeshike” are displayed. Since each of these display portions 25 is formed on the outer peripheral edge 26 side of each switch button 8, 9, 10, the portion of the display portion 25 is opaque, but each outer peripheral edge 26 remains transparent.
[0018]
In addition, circular light transmitting portions 30a, 30b, and 30c are provided on the display portion 25 of the central switch button 8 and the display portion 25 of the left switch button 9, respectively. The translucent portions 30b and 30c provided on the left switch button 9 are provided corresponding to the display of “heat retention” and “night heat retention”, respectively.
[0019]
A button member 24 formed by connecting and integrating the switch buttons 8, 9, and 10 is fitted into the opening of the operation recess 12. As shown in FIG. 4, hinge portions 27, 27 that support the hinge shafts 14, 14 of the switch button 8 at the center are provided on the same line on the periphery of the opening portion of the operation recess 12. In addition, hinge portions 28 and 28 that support the hinge shafts 15 and 15 of the left switch button 9 are provided at opposing positions. Further, a pair of left and right hinge portions 29 and 29 that support the hinge shaft 18 of the right switch button 10 are provided close to each other. The button member 24 engages the hinge shafts 14, 15, 18 with the hinge shafts 27, 28, 29, so that the switch buttons 8, 9, 10 are respectively connected to the flexible connecting portions 16, 19, respectively. It is supported so as to be swingable in the vertical direction without affecting the mutual operation.
[0020]
Engagement portions 31 of the operation panel 5a are provided at several locations in the opening portion of the operation recess 12. Further, switch holes 32, 32, 33, 33 ′, and 34 are provided on the inner bottom surface of the operation recess 12 so as to face the switch operating protrusions 21, 22, 22, 22 ′ and 23. These switch holes 32, 32, 33, 33 ′, 34 have switch spacers 37, 37, 57, 57 ′, 58 (FIG. 4, FIG. 4) of the spacer member 36 fixed to the lower surface of the operation recess 12 with screws 35. The upper end of FIG. Further, light emitter holes 38 and 39 are provided on the inner bottom surface of the operation recess 12 so as to face the switch button 8 at the center and the switch button 9 at the left side, respectively.
[0021]
Further, a light shielding sheet 41 (see FIG. 3) is attached to the back surface of the button member 24 inside the operation recess 12 described above. The light shielding sheet 41 is made of an opaque resin sheet, and opposes the switch buttons 8, 9, and 10 to hide the entire range of the switch buttons 8, 9, and 10 as shown in FIG. 6B. A central light shielding part 42, a left light shielding part 43, and a right light shielding part 44 having a size sufficient for the above are provided. Cuts 45 and 46 are provided between the respective light shielding portions 42 to 44.
[0022]
The central light shielding part 42 and the left light shielding part 43 are provided with light transmitting holes 47a, 47b, 47c facing the light transmitting parts 30a, 30b, 30c of the button member 24, respectively. Furthermore, semicircular small concave portions 48, 48, 49, 49 ′ opposed to the protrusions 21, 21, 22, 22 ′, 23 are formed on the side edges on the open side of the cuts 45, 46 of the central light-shielding portion 42. , 51 are provided.
[0023]
As shown in FIG. 3, the light shielding sheet 41 is overlapped on the back surface of the button member 24, straddles the left hinge shaft 14 and the connecting portion 16 continuous with the notch 45, and is formed with the notch 46. By straddling the hinge shaft 14 on the right side of the hinge and the connecting portion 19, the light shielding portion 42 is applied to the back surface of the switch button 8, and the left and right light shielding portions 43, 44 are applied to the back surfaces of the left and right switch buttons 9, 10. (Refer FIG.6 (d)).
[0024]
Further, the small recesses 48, 49, 49 ′, 51 are positioned by fitting into the protrusions 21, 22, 22 ′, 23, respectively. The light shielding portions 42, 43, 44 cover the entire back surfaces of the central switch button 8, the left switch button 9, and the right switch button 10, and the light transmitting holes 47 a to 47 c are respectively formed on the light transmitting portions 30 a to 30 c. Match. Further, a projecting piece 50 provided on the side edge of the right light shielding portion 44 opposite to the small recess 51 is inserted between the arms 17 of the hinge shaft 18 and engaged with the hinge shaft 18.
[0025]
On the other hand, a flexible waterproof sheet 52 is laid on the bottom surface of the operation recess 12, thereby closing the aforementioned switch holes 32, 33, 33 ′, 34 and the light emitter holes 38, 39. The portions of the waterproof sheet 52 corresponding to the switch holes 32, 33, 33 ′, and 34 are provided with bulging portions 53, 53, 54, 54 ′, and 55 (see FIGS. 3 and 6C). The lower ends of the protrusions 21, 21, 22, 22 ′ 23 are in contact with the upper surfaces of the protruding portions 53, 53, 54, 54 ′, 55. Further, the upper ends of the switch spacers 37, 37, 57, 57 ′, 58 of the spacer member 36 (see FIG. 7) are in contact with the lower surfaces of the bulging portions 53, 53, 54, 54 ′, 55.
[0026]
An operation board 56 is attached to the inside of the spacer member 36, and a required number of switches 59 such as tact switches and a light emitter 61 such as an LED are mounted on the operation board 56. Each light emitter 61 is inserted through the cylindrical portion 62 of the spacer member 36, and the tip portion thereof is inserted into the light emitter hole 38 (see FIG. 3).
[0027]
The two switches 59 and 59 corresponding to the two protrusions 21 and 21 of the switch button 8 at the center are connected in parallel to the load as shown in FIG.
[0028]
In the embodiment described above, when the user presses any one of the switch buttons 8, 9, 10, any one of the protrusions 21, 21, protrusions 22, 22 ′, and the protrusion 23 faces the switch spacer 37. , 37, 57, 57 ′, 58, the operation board-like switch 59 is operated. In this case, when the switch button 8 at the center is relatively long to the left and right, the switch 59 corresponding to any one of the protrusions 21 and 21 is operated even if the position shifted to the left end or the right end is pushed. Can do. In other words, by providing the two protrusions 21, the action of the switch button 8 is ensured, and the switch button 8 can be enlarged.
[0029]
In addition, when selecting “heat retention”, the switch button 9 on the left side pushes a portion shifted to the left end to operate the switch 59 corresponding to the protrusion 22 and also selects “night heat retention” that retains heat with low power. In such a case, the switch 59 corresponding to the protrusion 22 'is operated by pushing the part offset to the right end.
[0030]
When the corresponding switch 59 is actuated by pressing the switch button 8 or 9 and the light emitter 61 emits light, the light is transmitted through the waterproof sheet 52 and the light transmitting part 47a of the light shielding sheet 41 as indicated by an arrow a in FIG. ˜47c, the light transmitting portions 30a to 30c of the display portion and the switch buttons 8 and 9 are used to go outside. Other light is not blocked by the light shielding sheet 41 and leaks outside. Therefore, the user can see only the light emitted from the light transmitting portions 30a to 30c.
[0031]
If the light emitter 61 of the switch button 8 at the center portion emits light, light may reach the portion of the right switch button 10 adjacent to the light emitter 61, but the light corresponds to the switch button 10. Are blocked by the light shielding portion 44 provided to prevent leakage to the outside.
[0032]
【The invention's effect】
As mentioned above, according to this invention, it is prevented that light leaks from the outer periphery of the switch button provided in the operation part of the rice cooker, and only the light which passes the translucent part provided in the switch button is a user. Will be in the eyes. In addition, since each light shielding sheet has a light shielding portion corresponding to a plurality of switch buttons, light shielding can be achieved for all switch buttons by simply assembling one light shielding sheet, and the assembly workability is good. .
[0033]
Furthermore, by providing a light-shielding portion for a switch button having no light-transmitting portion, it is possible to prevent light from the light emitter facing the adjacent switch button from leaking.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first embodiment. FIG. 2 is a sectional view of the same. FIG. 3 is a partially enlarged sectional view of the same. FIG. 4 is a plan view of an operating unit. Plan view of member (b) Front view of (a) view (c) Transverse plan view of (b) view (d) Cross-sectional view along line dd of (a) view (e) e- view of (a) view Sectional view of line e [FIG. 6] (a) Top view of button member with insert-molded display part (b) Top view of light shielding sheet (c) Top view of waterproof sheet (d) Combination of button member and light shielding sheet FIG. 7 is a perspective view of the spacer member. FIG. 8 is a correspondence diagram between the switch button and the switch and a circuit diagram of the switch. FIG. 9 is a partially enlarged cross-sectional view of a conventional operation unit.
DESCRIPTION OF SYMBOLS 1 Jar body 2 Lid 3 Body member 4 Bottom member 5 Operation part 5a Operation panel 6 Liquid crystal display part 7 Rice cooking condition setting key 8 Switch button 9 Switch button 10 Switch button 11 Hook 12 Operation recessed part 13 Arm 14 Hinge axis 15 Hinge axis 16 Connection Part 17 arm 18 hinge shaft 19 connecting part 21 protrusion 22 protrusion 22 'protrusion 23 protrusion 24 button member 25 display part 26 outer peripheral edge 27 hinge part 28 hinge part 29 hinge part 30a translucent part 30b translucent part 30c translucent part 31 Joint portion 32 Switch hole 33 Switch hole 33 'Switch hole 34 Switch hole 35 Screw 36 Spacer member 37 Switch spacer 38 Light emitter hole 39 Light emitter hole 41 Light shield sheet 42 Center light shield 43 Left light shield 44 Right light shield 45 Cut 46 Cut 47a Translucent part 47b Translucent part 47c Translucent part 48 Small recess 4 8 'small concave portion 49 small concave portion 50 projecting piece 51 small concave portion 52 waterproof sheet 53 bulging portion 54 bulging portion 54' bulging portion 55 bulging portion 56 operation board 57 switch spacer 57 'switch spacer 58 switch spacer 59 switch 61 light emission Body 62 Tube

Claims (1)

An operation board (56) mounted with a switch, a light emitter and other electronic components is mounted inside the rice cooker body (1), and a plurality of transparent resins made of the transparent resin facing the switch or both of the switch and the light emitter (61) are mounted. The switch button (8, 9, 10) is provided with an opaque display part (25) leaving a transparent outer periphery, and the display part (25) of the switch button (8, 9) facing the light emitter (61). ) Are provided with translucent parts (30a, 30b, 30c), and the switch buttons (8, 9, 10) are exposed to the surface side from the independent button holes of the rice cooker body (1). In the operation section of
Set on SL plurality of switch button (8, 9, 10) farmland transparent portion adjacent to the switch button (8) with (30a) without the switch button of transparent portion (10),
The light-transmitting portions (30a, 30b, 30c) interposed the light shielding sheet (41) of the full range to cover the size of the back side to the respective switch buttons of the switch button (8,9) (8,9) with its The light shielding sheet (41) is provided with light transmitting holes (47a, 47b, 47c) facing the light transmitting parts (30a, 30b, 30c) of the switch buttons (8, 9),
The light-shielding sheet (41) is formed by a single sheet which is opposed to the plurality of all of the switch button (8, 9, 10), light shielding portions facing the each switch button (8, 9, 10) (42, 43, 44) is the form the entire range of the size covering the all of the switch button (8, 9, 10), and those provided with a notch (45, 46) between the light shielding part mutually operation of the cooker, characterized in that Oh Ru.

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