JP2012179142A - Small electric appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small electric appliance facilitating assembly of waterproof member.SOLUTION: A first body case 21 is provided with a display opening portion 42 for externally exposing a display portion 36a of a display device 36 on a built-in control board 32, a display window member 51 is disposed to close the display opening portion 42, and a front side panel 25 is disposed to cover the front side of the display window member. In order to prevent intrusion of water or the like between the display window member 51 and the front side panel 25 by which display of the display portion 36a is blurred, a waterproof sheet 52 of double-sided tape structure is bonded between an annular flat surface 43 of the body case 21 which is located on the outer peripheral side of the display window member 51, and the front side panel 25.

Description

  The present invention relates to a small electric device such as an electric razor or an electric toothbrush.

  As a small electric device, for example, an electric shaver, for example, as shown in Patent Document 1, electric parts such as a control board (control circuit), a secondary battery, and a display device are accommodated in a main body case, and a display unit of the display device is used. In order to be visible from the outside, the main body case is formed with a waterproof structure while forming an opening or the like.

  As an example of the structure of the display device portion, as shown in FIG. 7, for example, the main body case 71 is provided with a display opening 74 that allows the display portion 73a of the display device 73 on the built-in control board 72 to face the outside. A display window member 75 is disposed so as to close the display opening 74. The display window member 75 has a window portion 75a corresponding to the display opening portion 74, and a flange portion 75b for mounting around the window portion 75a. The flange portion 75b is fixed to the opening peripheral edge portion 74a by welding or the like. The The upper surface of the display window member 75 is covered with the panel member 76 so that the display portion 73a of the display device 73 can be visually recognized from the outside through the transmission portion 76a of the panel member 76 and the window portion 75a of the display window member 75. A possible configuration is possible. In such a structure, the display of the display part 73a may become unclear when water etc. permeate between the window part 75a of the display window member 75 and the transmission part 76a of the panel member 76. As a countermeasure, for example, a waterproof member 77 is interposed around the window portion 75a of the display window member 75, that is, between the flange portion 75b and the panel member 76, and a waterproof structure is provided between the window portion 75a and the panel member 76. It is preferable.

JP 2006-42898 A

  However, in the case of the above waterproof structure, if the work of assembling the waterproof member 77 is not performed accurately, a part of the waterproof member 77 may invade on the window portion 75a (on the display area), and the display portion 73a. There is a risk of hindering visual recognition. Further, when the waterproof member 77 having a double-sided tape structure is used, the waterproof member 77 can be reattached structurally, but once attached to the window 75a, the adhesive remains in the window 75a and becomes dirty or peeled off. When the window portion 75a is damaged, it is substantially difficult to reattach. As a result, there has been a problem that more carefulness is required for the mounting work of the waterproof member 77 so as not to fall into such a situation, leading to a reduction in work efficiency.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a small electric device that can easily perform a work of assembling a waterproof member.

  In order to solve the above-described problems, a small electric device according to the present invention includes a display device for displaying a state of the device to a user, and a display opening portion that exposes the display unit of the display device to the outside. A main body case in which an electrical component including the device is accommodated, a display window member provided in a display opening of the main body case, and a panel member provided so as to cover an upper surface of the display window member. A small-sized electric apparatus configured to be able to visually recognize a display unit of the display device through each transmission part of the panel member and the display window member, wherein the main body case and the panel member on an outer peripheral side from the display window member And a waterproof space is formed between the display window member and the panel member.

  Moreover, in the said structure, it is preferable that the said display window member is provided so that the said display opening part may be plugged up, and it is watertightly fixed so that the inside of the said main body case may become a waterproof structure with respect to the opening peripheral part.

Moreover, in the said structure, it is preferable that the said waterproof member is comprised with a double-sided tape, and each surface is comprised so that it can affix on each of the said main body case and the said panel member.
Moreover, in the said structure, it is preferable that the positioning part which positions the said waterproof member with respect to the said main body case is provided in at least one of the said main body case and the said waterproof member.

Moreover, in the said structure, it is preferable that the said waterproof member is an O-ring, and it is comprised so that it can contact | abut each of the said main body case and the said panel member.
Moreover, in the said structure, it is preferable that the said waterproof member is integrally molded by the said main body case.

  ADVANTAGE OF THE INVENTION According to this invention, the small electric equipment which can perform the assembly | attachment operation | work of a waterproof member easily can be provided.

The disassembled perspective view of the electric razor in this embodiment. (A) is sectional drawing of an electric shaver, (b) is sectional drawing of a holding part. The enlarged view for demonstrating arrangement | positioning with a main body case and a double-sided tape. The elements on larger scale of the holding part in another example. Sectional drawing of the holding part in another example. Sectional drawing of the holding part in another example. The schematic diagram for demonstrating arrangement | positioning of each member of the holding part in a prior art example.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1 and FIG. 2, the electric shaver for scissors 11 as a small electric device of the present embodiment includes a grip portion 12 that can be gripped by a user, and a head portion provided at the upper end of the grip portion 12. 13.

  At the upper end portion of the head portion 13, a plurality (five in this embodiment) of outer blades 14 capable of introducing body hair such as wrinkles are provided in parallel in the longitudinal direction of the head portion 13 along the front-rear direction of the head portion 13. ing. Further, as shown in FIG. 2, in the head portion 13, the outer blade 14 can be reciprocated along the width direction of the head portion 13 in the longitudinal direction of the outer blade 14 on the inner side of each outer blade 14. An inner blade 15 is provided for excision with the body hair introduced therein. The inner blade 15 can be driven by a linear motor 16 as a drive source provided inside the head portion 13.

  As shown in FIG. 1, the grip portion 12 includes first and second main body cases 21 and 22 that house and hold the control unit 31, and each of the main body cases 21 and 22. It has gripping cases 23 and 24 that form an appearance, and a front panel 25 provided on the front surface of the first main body case 21. A control unit 31 including a control board 32, a secondary battery 33, a switch element 34, and the like is accommodated inside the first and second main body cases 21 and 22, and a waterproof rubber 26 is provided between the coupling portions of the cases 21 and 22. A waterproof structure is provided. As shown in FIG. 2, the head unit 13 is connected above the first and second main body cases 21 and 22, and the control unit 31 in the cases 21 and 22 is wired (not shown) through the waterproof tube 35. Is electrically connected to the linear motor 16 of the head unit 13. The power supply from the secondary battery 33 to the linear motor 16 is controlled by the control of the control board 32 based on the operation of the switch element 34, and the drive of the linear motor 16 is controlled.

  On the front surface of the control board 32, a liquid crystal display device 36 for displaying device information such as the remaining charge of the secondary battery 33 and the usage time of the electric shaver 11 to the user is disposed. The front portion of the first main body case 21 is provided with a bulging portion 41 that bulges forward according to its shape so as to accommodate the display device 36. The bulging portion 41 is formed with a substantially rectangular display opening 42 penetratingly formed in the center portion of the front surface so that the display portion 36a of the display device 36 faces the outside. The bulging portion 41 is provided with a display window member 51 formed of a transparent or translucent member capable of visually recognizing the display on the display portion 36 a while closing the display opening 42.

  The display window member 51 has a window 51a corresponding to the display opening 42 with a thick central portion to constitute a magnifying lens or a reduction lens, and a mounting flange 51b around the window 51a. ing. As for the display window member 51, the window part 51a is arrange | positioned corresponding to the display opening part 42, and the flange part 51b is being fixed to the opening peripheral part 42a. In this case, the flange portion 51b is fixed to the opening peripheral edge portion 42a by welding so as to surround the display opening portion 42 (see FIG. 2B), and the display window is formed by the welding portion 44 surrounding the display opening portion 42. A waterproof structure is formed between the member 51 and the bulging portion 41 (first main body case 21). An annular flat surface 43 is provided on the outer peripheral portion of the opening peripheral portion 42a so as to slightly protrude forward from the opening peripheral portion 42a and surround the opening peripheral portion 42a.

  A front panel 25 is attached to the front surface of the first main body case 21 including the display window member 51 so as to cover it. The front panel 25 is provided with a transmission window 25 a corresponding to the window portion 51 a of the display window member 51. That is, the grip unit 12 is configured so that the user can visually recognize information displayed on the display unit 36 a of the display device 36 from the outside through the transmission window 25 a of the front panel 25 and the window unit 51 a of the display window member 51. Has been.

  Further, a waterproof sheet 52 is provided between the annular flat surface 43 of the first main body case 21 and the front panel 25 on the outer peripheral side of the display window member 51. The waterproof sheet 52 is formed in an annular shape in conformity with the annular flat surface 43 surrounding the display window member 51, and the front and rear surfaces are constituted by a double-sided tape having adhesive surfaces 52a and 52b. When attaching the front panel 25 to the main body cases 21 and 22, the adhesive surface 52 a of the waterproof sheet 52 is attached to the front panel 25 and the adhesive surface 52 b is attached to the annular flat surface 43, and the display window member 51 and the front panel 25 are attached. A waterproof space S is formed between the two. This prevents water or the like from entering between the display window member 51 and the front panel 25 and prevents the display on the display unit 36a from becoming unclear. In addition, the display opening 42 of the main body case 21 closed by the display window member 51 has a double waterproof structure, so that water from the display opening 42 into the main body cases 21 and 22 is sufficiently prevented. Will be.

  Incidentally, as shown in FIG. 3, the annular flat surface 43 of the first main body case 21 is provided with positioning portions 43 a and 43 b at the center portions in the width direction of the upper side and the lower side, respectively. On the other hand, also in the waterproof sheet 52, positioning portions 52c and 52d are provided in the center portion in the width direction according to the positions of the positioning portions 43a and 43b. That is, by attaching the waterproof sheet 52 to the annular flat surface 43 of the first main body case 21 by aligning the positioning portions 52c and 52d of itself with the positioning portions 43a and 43b of the annular flat surface 43, It is possible to easily perform the work of attaching the waterproof sheet 52 to an appropriate position.

  As shown in FIG. 1, the front panel 25 has a switch 54 mounted in its own switch mounting hole 25b. The switch 54 is supported between the front panel 25 and the first main body case 21 so that the user can perform a pushing operation, and the switch element 34 provided on the control board 32 is provided with a waterproof rubber 55 provided on the main body case 21. Operates through. Further, the switch 54 is provided with a lock member 56 so that the pushing operation of the switch 54 is restricted (locked). When the switch 54 is turned on by the user, the linear motor 16 is driven based on the power supply from the control unit 31 and the inner blade 15 reciprocally vibrates. The hair is removed.

This embodiment has the following effects.
(1) The first main body case 21 is provided with a display opening 42 that exposes the display portion 36a of the display device 36 on the built-in control board 32 to the outside, and a display window is provided so as to close the display opening 42 The member 51 is disposed, and the front panel 25 is disposed so as to cover the front surface thereof. Then, in order to prevent intrusion of water or the like between the display window member 51 and the front panel 25, which makes the display of the display unit 36 a unclear, the annular flatness of the main body case 21 located on the outer peripheral side of the display window member 51. A waterproof sheet 52 having a double-sided tape structure is stuck between the surface 43 and the front panel 25. That is, since the waterproof sheet 52 for waterproofing is configured to be adhered to the annular flat surface 43 of the main body case 21 that is sufficiently separated from the display area of the display unit 36a to the outer peripheral side, Even if the sticking position is slightly deviated, it is unlikely that the sticking position protrudes on the display area. Even if the waterproof sheet 52 needs to be pasted again, the adhesive of the waterproof sheet 52 remains on the window 51a of the display window member 51 or the like located on the display area of the display unit 36a, or the window 51a is damaged. The possibility of doing is low. As a result, the work of attaching the waterproof sheet 52 is not required to be extremely cautious, and the work can be easily performed, so that the work efficiency can be improved.

  Further, as compared with the case where a waterproof sheet 52 (waterproof member) is provided around the window portion 51 a of the display window member 51 as in the prior art, the waterproof sheet 52 on the outer peripheral side of the display window member 51 is formed in an annular flat shape. By providing it on the surface 43, it is possible to simultaneously obtain the effects of configuring the waterproof structure to increase the area of the waterproof structure while ensuring visibility and improving the work efficiency of the assembly work.

  (2) The display opening 42 of the main body case 21 has a waterproof structure by welding the display window member 51, but has a double waterproof structure by waterproofing the previous waterproof sheet 52. Thereby, it is possible to sufficiently prevent water from entering from the display opening 42 into the main body case 21.

(3) Since the waterproof sheet 52 is composed of a double-sided tape, the waterproof sheet 52 is easy to attach.
(4) When attaching the waterproof sheet 52 to the main body case 21, the positioning work 43a, 43b, 52c, 52d provided on each case is used as a reference for the attachment, so that the waterproof sheet 52 is attached to an appropriate position. It can be done easily.

In addition, you may change embodiment of this invention as follows.
-In the said embodiment, although the waterproof structure was comprised using the waterproof sheet 52 of a double-sided tape structure, it is not restricted to this. For example, in the embodiment shown in FIGS. 4 and 5, an O-ring 61 made of an elastic member is attached along the outer peripheral side surface 41 a of the bulging portion 41. Further, the front panel 25 is provided with an annular projecting portion 62 projecting from the inner side surface thereof and forming an annular shape along the outer periphery of the bulging portion 41, and the O-ring 61 includes the annular projecting portion 62 and the side surface 41 a of the bulging portion 41. And is held in contact. Thereby, intrusion of water or the like between the display window member 51 and the front panel 25 is prevented. Since the O-ring 61 is designed to be waterproof, since the O-ring 61 is mounted at a position sufficiently separated from the display area of the display unit 36a, a part of the O-ring 61 may protrude from the display area. Reduced.

  Further, as shown in FIG. 6, for example, a waterproof rubber 63 may be integrally formed on the side surface 41 a of the bulging portion 41. Similarly, since the waterproof rubber 63 is integrally formed at a position sufficiently separated from the display area of the display unit 36a, the protrusion of the waterproof rubber 63 on the display area is reduced.

In the above embodiment, the display opening 42 is provided in a substantially rectangular shape corresponding to the shape of the display portion 36a. However, the display opening 42 may be changed to other polygonal shapes or other shapes such as a semicircle, a circle, and an ellipse. Also good.
In the above embodiment, the display window member 51 and the opening peripheral edge portion 42a are welded to waterproof the display opening portion 42. However, the fixing method may be changed, and the waterproof structure may not be provided.

  In the above embodiment, the positioning portions 43a, 43b, 52c, and 52d are provided on both the first main body case 21 side and the waterproof sheet 52 side, but may be provided on only one of them or may be omitted. .

In the above embodiment, the liquid crystal display device 36 is used as the display device, but other display devices such as LEDs may be used.
-In the said embodiment, the apparatus information displayed on the display apparatus 36 is an example, Other information, for example, the connection state to a household commercial power supply, the replacement | exchange / inspection time of blades, such as the outer blade 14 and the inner blade 15, dedicated Information regarding the device such as the state of the drive mode, the lock state of the switch 54, the connection state with the external device, and the like may be displayed.

In the above embodiment, the visible area may be changed by printing the display window member 51, for example.
In the above embodiment, the head unit 13 may be changed to a configuration in which the head unit 13 is formed integrally with the grip unit 12.

  -Although it applied to the electric razor 11 for wrinkles in the said embodiment, you may apply to the electric razor which cuts off hair other than a wrinkle. Further, the present invention is not limited to an electric razor, and may be applied to other small electric devices that are small and require waterproofing, such as an electric toothbrush.

  In the above embodiment, the shapes, materials, configurations, etc. of the first and second main body cases 21, 22, the front panel 25, the display device 36, the display window member 51, etc. are examples, and other than the above, Also good.

  DESCRIPTION OF SYMBOLS 11 ... Electric razor (small electric equipment), 21, 22 ... 1st and 2nd main body case (main body case), 25 ... Front panel (panel member), 25a ... Transmission window (transmission part), 32 ... Control board, 36 ... Display device, 36a ... Display section, 43a, 43b, 52c, 52d ... Positioning section, 42 ... Display opening section, 42a ... Opening peripheral edge section, 51 ... Display window member, 51a ... Window section (transmission section) 52 ... Waterproof Sheet (waterproof member), 61 ... O-ring (waterproof member), 63 ... waterproof rubber (waterproof member), S ... space.

Claims (6)

A display device for displaying a state of the device to a user, a main body case having a display opening for facing a display unit of the display device to the outside, and containing an electrical component including the display device; and the main body case A display window member provided in the display opening and a panel member provided so as to cover an upper surface of the display window member, and externally through the panel member and each transmission portion of the display window member A small electric device configured to be able to visually recognize the display unit of the display device,
A waterproof member is provided between the main body case on the outer peripheral side of the display window member and the panel member, and a waterproof space is formed between the display window member and the panel member. Small electrical equipment to do. The small electric device according to claim 1,
The display window member is provided so as to close the display opening, and is watertightly fixed to the periphery of the opening so that the inside of the main body case has a waterproof structure. The small electric device according to claim 1 or 2,
The said waterproof member is comprised with the double-sided tape, Each surface was comprised so that it could affix on each of the said main body case and the said panel member, The small electric equipment characterized by the above-mentioned. In the small electrical equipment according to claim 3,
A small electric device, wherein a positioning portion for positioning the waterproof member with respect to the main body case is provided in at least one of the main body case and the waterproof member. The small electric device according to claim 1 or 2,
The waterproof member is an O-ring, and is configured to be able to contact each of the main body case and the panel member. The small electric device according to claim 1 or 2,
A small electric device, wherein the waterproof member is integrally formed with the main body case.

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