JP6940545B2 - Personal care equipment such as electric shavers - Google Patents

Description

The present invention is a housing to which a work head is attached, including a housing including an inner housing and an outer housing, and a light source housed in the inner housing and emitting light through transparent portions of the inner and outer housings. A display and a display that further comprises a display foil having different transparency and / or different color portions forming a display symbol, the display foil being sandwiched between the transparent parts of the inner and outer housings. The present invention relates to a personal care device including, in particular, a hair removal device such as an electric shaver or a hair remover. The present invention further relates to a method of manufacturing such a personal care device.

Other hair removal devices, such as electric shavers and hair removers, typically have one or more cutter elements driven by an electric drive in a vibrating fashion in which the cutter elements reciprocate under shear foil. Such cutter elements or undercutters may have an elongated shape and may reciprocate along their longitudinal axis. Other types of electric shavers use rotating cutter elements that can be driven in a vibrating or continuous fashion. The electric drive unit may include an electric motor or a magnetic linear motor, and the drive unit may include a drive train having elements such as an elongated drive transmission device that transmits the drive motion of the motor to the cutter element. It can be accepted in the handle part of the shaver.

On the other hand, if the motor is housed within the shaver head, such a drivetrain extending from the housing to the inside of the shaver head is not needed. Nevertheless, usually the electrical connection from the power source housed in the housing extends into the shaver head to power the motor from that power source. Such a power source may be a battery or a capacitor such as an accumulator.

Housings that house electric motors and / or power supplies often include elongated base elements that are closed by cover elements so that electronic components can be mounted and housed inside the housing. Nevertheless, since the housing should form a sealed container to protect the electronic components from liquids and moisture, a seal is provided between the base element and the cover element, such a seal , May include a seal ring extending between the opposing surfaces of the base element and the cover element.

Sealing of such housings is also needed to protect other electronic components from liquids and moisture. For example, personal care devices often include a display device for displaying various information to the user. Such an indication may indicate the state of charge of the battery, the state of cleaning, such as wear requiring replacement of the tool head, the level of the coating fluid pool, or other types of information such as instruction manual, speed mode, user mode, or styling mode. Can include a symbol indicating.

Such a display device may include at least one light source, such as an LED, for emitting light from inside the housing through a transparent portion of the housing, such light as the higher and lower transparent portions as well. / Or may form the aforementioned symbols guided through a display foil with different colored portions and illuminated by light guided through the display foil. The light source, as well as the power and control elements connected to the light source, such as electronic circuit boards, are received inside the housing that protects them from moisture, while the display foil is more contrasting. It may be located on the outside of the sealed housing container to provide clearer illumination of the display symbol.

More specifically, the display foil may be positioned outside the inner housing sealed against moisture or liquid, and inside the outer housing that surrounds or surrounds the inner housing, and thus the aforementioned display. The foil is sandwiched between the inner and outer housings. Such a two-shell or multi-shell housing may be desired in order to conceal the functional structure of the inner housing and provide good handling, aesthetic appearance, and modular configuration of various types of equipment. Each of the inner and outer housings can be individually adapted to different functions. For example, the outer housing is an organic form, while the inner housing can contain electronic components that are protected against moisture, position drivetrain elements, and form a functional platform to support the work head. And can meet other needs such as forming a non-slip surface, or an ergonomic handle with an attractive appearance.

However, such outer housings may not be sealed against moisture or liquid or foam or gel, so they may come into contact with the display foil placed between the outer and inner housings. There is sex. Such moisture in contact with the display foil can impair the visibility of the display symbol and, worse, melt the boundary between the transparent portion and the opaque portion and impair the function of the display foil.

Furthermore, when positioning the display foil between the inner and outer housings, manufacturing tolerances can cause misalignment of the display foil, so the display foil symbol is housed inside the inner housing as a light source. It can be difficult to align exactly with. Even if the misalignment is very small, light diffusion or stray light or shadowing can significantly impair the illumination of the symbol. Since there are usually multiple symbols located very close to each other, the light sources are also arranged in some sort of fairly dense matrix, even with a small misalignment, from the light source associated with the first symbol. The emitted light may be deflected and scattered over the second symbol.

The aforementioned type of personal care device is shown, for example, in U.S. Patent Application Publication No. 2009/0025229 (A1), which published a drive unit for a cutter element of an electric shaver, where the drive unit is from the shaver housing to the shaver. Includes a transmission pin that extends towards the head. Similar devices are known from US Pat. No. 7,841,090 (B2).

Additional electric shavers are, for example, US Pat. No. 3,748,371 (B), French Patent Application Publication No. 1391957 (A), UK Pat. No. 811,207 (B), and US Pat. No. 5, It is known from No. 704,126 (B).

U.S. Patent Application Publication No. 2009/0025229 (A1) U.S. Pat. No. 7,841,090 (B2) U.S. Pat. No. 3,748,371 (B) French Patent Application Publication No. 1391957 (A) British Patent No. 811,207 (B) U.S. Pat. No. 5,704,126 (B)

An object underlying the present invention is to avoid at least one of the drawbacks of the prior art and / or to further develop existing solutions, such as an electric shaver or an improved hair remover as a hair remover. To provide personal care equipment.

This object is solved by the characteristics of each of claims 1, 6, 10, and 15. Dependent claims 2-5, 7-9, 11-14, and 16-17 provide advantageous embodiments.

A more specific object underlying the present invention is personal care, such as an electric shaver or a hair remover as a hair remover, which has a clear display for displaying information and is well sealed against liquids. It is to provide easy manufacturing with a focus on the cost of the equipment.

A further object underlying the present invention is a hermetically sealed container housing for accommodating electrical components such as an electric motor and / or power source, and a display that is rich in contrast and provides good visibility. To provide an improved hair removal device, such as a shaver.

More specifically, the underlying objectives of the present invention are to combine an easily visible display with a seal on the housing of a personal care device, and the shape and / or dimensional tolerances of the housing elements to be connected, and /. Alternatively, the display is protected against moisture even if there are variations in the mounting forces that press the housing elements against each other due to tolerances and / or errors in the assembly process.

To achieve at least one of the above objectives, a personal care device as described above having a seal on both the inner and outer housing elements of the display foil is provided to display against liquids and moisture. It is proposed to protect the foil. More specifically, the display foil can be adhered to both the inner and outer housings by an adhesive on each of the sides of the display foil. By adhering the display foil to the outside of the inner housing and the inside of the outer housing in this way, water, or other liquids and moisture, or bubbles, or gels are prevented from entering the surface of the display foil, thereby preventing water, or other liquids and moisture, or bubbles from entering the surface of the display foil. Prevents the visibility from being impaired or the display foil from becoming defective.

To compensate for tolerances in the distance of the inner surface of the outer housing from the outer surface of the inner housing, and / or to compensate for the relative movement of the inner and outer housings due to gripping forces and / or deformation due to housing bending. In addition, an adhesive foam such as a PE foam or a PU foam can be used as an adhesive for adhering the display foil to the inner or outer housing.

The display foil can comprise a symbol to be illuminated, for example, by laser treatment of the display foil after the display foil is attached to the inner housing. Applying the symbol to the foil after fixing the foil to the inner housing helps to avoid misalignment of the symbol with respect to the inner housing and components such as the light source received therein.

In yet a further embodiment, the light emitted by the light source associated with the transparent housing portion aligned with one display symbol is restricted to be transmitted only to that display symbol, and other symbols are such light sources. The inner housing may be provided with an opaque shading fence inside the inner housing to prevent it from being illuminated by stray or scattered light due to.

These and other advantages will become apparent from the following description with reference to the drawings and possible embodiments.

FIG. 5 is a perspective view of an electric shaver having a shaver connected to a handle by a support structure. FIG. 3 is a schematic exploded view of an electric shaver housing showing a shell-like structure of a housing including an outer housing and an inner housing, and a display foil placed between them. FIG. 2 is a perspective exploded view of the inner housing of FIG. 2 in which an electronic core component including the LED array of the display is inserted into an elongated cup-shaped base element of the inner housing. FIG. 5 is a cross-sectional view of an electric shaver handle showing the placement of display foil between the inner and outer housings and the placement of light sources and shading fences within the inner housing. A schematic cross-sectional view of the display foil and an adhesive layer that secures the display foil to the inner and outer housings, wherein in the first aspect, two transparent adhesive layers that completely cover both sides of the display foil inner the display foil. And adhered to the outer housing. The bottom side of the display foil is adhered to the inner housing by a transparent adhesive layer that completely covers the display foil, and the top side of the display foil is attached to the outer housing by an adhesive layer with a window that opens the display area of the display foil. It is a schematic cross-sectional view of the display foil and the adhesive layer which are bonded and are similar to those in FIG. The top side of the display foil is adhered to the outer housing by a transparent adhesive layer that completely covers the display foil, and the bottom side of the display foil is attached to the inner housing by an adhesive layer with a window that opens the display area of the display foil. It is a schematic cross-sectional view of the display foil and the adhesive layer which are bonded and are similar to those in FIG. The bottom side of the display foil is adhered to the inner housing by a transparent adhesive layer that completely covers the display foil, and the top side of the display foil is outside by an adhesive foam layer with a window that opens the display area of the display foil. FIG. 5 is a schematic cross-sectional view of a display foil and an adhesive layer similar to FIG. 5 bonded to a housing. The top side of the display foil is adhered to the outer housing by a transparent adhesive layer that completely covers the display foil, and the bottom side of the display foil is attached to the inner housing by an adhesive foam layer with a window that opens the display area of the display foil. It is a schematic cross-sectional view of the display foil and the adhesive layer which are bonded and are similar to those in FIG.

In one aspect, in order to achieve at least one of the above objectives, a display foil disposed between the inner housing and the outer housing is sealed against the inner surface of the outer housing and the outer surface of the inner housing. A personal care device is proposed. More specifically, the display foil is applied to both the inner and outer housings by an adhesive on each of the main surfaces of the display foil so that the outer housing is adhered to the inner housing via the display foil. It will be glued. By adhering both sides of the display foil to the inner and outer housings in this way, water or other liquids and moisture are prevented from entering the display surface of the display foil, thereby impairing the visibility of the display symbol. And prevent the display foil from becoming defective.

More specifically, in order to prevent water or moisture from entering the display symbol, the adhesive encloses at least one closed sealing loop that surrounds the area of the display foil on which the display symbol is located. Such closed sealing loops can be formed and can extend along the outer edge of the display foil. Basically, such a closed sealing loop formed by an adhesive can be provided on each of the sides of the display foil so that the central areas on both sides of the display foil can remain open. .. However, instead, at least one of the main surfaces of the display foil is completely coated with adhesive so that the display foil is in full contact with the housing on at least one side to completely cover the corresponding housing element. May be adhered to.

More specifically, on one side of the display foil, the adhesive may form a transparent adhesive layer covering at least the main portion of the display foil, including the display area on which the display symbol is placed, of the display foil. On the other side of the opposite, the adhesive may form an adhesive layer with windows that leave the display symbol open or uncovered. In the window of such an adhesive layer, the display foil is not coated with an adhesive and can be separated from the transparent housing portion that covers the display foil.

Adhering at least one side of the display foil to the housing substantially completely, that is, covering at least one side of the display foil or at least most of the surface area of the side with an adhesive and adhering to the housing. Helps maintain the desired shape of the display foil and prevents folds, waviness, wrinkles, or other unwanted deformation of the display foil.

Both sides of the display foil may be adhered substantially completely to the inner and outer housings, in which case a transparent adhesive is used so that light can illuminate through the transparent adhesive layer, especially in the area of the display symbol. Then, the display foil is adhered to the inner and outer housings.

If a window is provided in one of the adhesive layers so that the central portion of the display is basically not adhered to the corresponding housing element, such a windowed adhesive layer is provided on the top surface of the display. , The display foil can be fixed to the outer housing. Alternatively, such a windowed adhesive layer may be provided on the bottom surface side of the display foil to connect the display foil to the inner housing.

Such an adhesive layer with a window that leaves the area of the display foil on which the display symbol is placed open can consist of or may contain an opaque adhesive. By using such an opaque adhesive that forms a window frame that surrounds the display area of the display foil, it is possible to prevent scattered light from illuminating areas other than the display area, thus illuminating. It is possible to improve the visibility of the symbol.

In a further aspect, the adhesive for adhering the display foil to the inner and / or outer housing may include an adhesive foam and / or may consist of a foamable material. For example, polyurethane (PU) foam or polyethylene (PE) foam can be used to secure the display to the inner or outer housing. The inside, which can occur to compensate for tolerances in the distance of the inner surface of the outer housing from the outer surface of the inner housing, and / or, for example, due to housing bending and / or gripping the housing with excessive force. The adhesive foam can be advantageous to compensate for the relative movement of the outer housing and to each other and / or to avoid the generation of air bubbles between the two adhesive layers. Advantageously, the adhesive foam may be elastic and / or deformable to allow such compensation. Further, such an adhesive foam can easily compensate for irregularities on the surface of the housing to provide a smooth surface that holds the display foil.

In particular, the adhesive layer with windows that leave the area of the display foil provided with the display symbol open can be formed of such an adhesive foam.

It may be advantageous to provide a multi-piece outer housing to avoid excessive force on the adhesive bond of the display foil or even loosening or detachment of the display foil from the inner and / or outer housing. More specifically, the outer housing can be composed of a plurality of housing parts, and the outer housing display to which the display foil is attached is substantially plate-like, which is received in the window of another outer housing part. An insert can be formed, which helps prevent the force exerted on the other housing component from being transmitted to the outer housing display. In other words, the outer housing display may form a windowpane that is inserted into the window frame formed by the other housing component. More specifically, the outer housing forming the insert so that the outer housing display can stick to the display foil even when the other housing component having the window is moved away from the display foil. The display can be inserted from the inside of the outer housing into the window of another housing component. More specifically, the other outer housing component having the window can overlap the outer housing display from the outside by the edge of the window.

The display foil is provided with the display symbol after it is attached to the inner housing so that it is accurately aligned with the light source received inside the inner housing, while allowing easy manufacture. May be good. More specifically, when manufacturing and / or assembling a personal care device, a plain display foil that does not yet have a display symbol can be glued onto the outer surface of the inner housing. After the display foil is adhered onto the inner housing, the display foil may be marked to produce the desired display symbol. More specifically, a laser processing process can be used to provide the desired symbol on the display foil attached to the inner housing.

The display foil may include a laser active layer. For example, a transparent foil having a laser active layer that becomes opaque when laser light is applied may be used. Alternatively, the laser active layer may be initially opaque, for example black, and the laser active layer may be configured such that the portion exposed to the laser beam is transparent. Laser activation also makes it possible to apply the laser process just before packing after the shaver is finally easily manufactured (eg, the shaver type is only the symbol shown on the laser display). Shavers can be adapted to a particular shaver type by applying a mold-specific display foil activation process). This process can reduce the number of inventors of the finished product.

Other processing processes may be used to mark the desired symbol on the display foil, for example by applying radiation onto the foil via a mask.

Providing a display symbol after attaching the display foil to the inner housing is advantageous not only in terms of precise alignment independent of tolerances when positioning the foil on the housing, but also for different models of personal care equipment. It enables easy distribution to avoid storage of different preset display foils, which reduces the number of different parts required and makes it easier to just-in-time the parts needed to assemble the embodiments. Will be delivered by.

After creating the symbol on the display foil, the outer housing may be glued to the display foil. This allows the manufacturing process to include three steps, which are carried out in sequence, with any other intermediate processing step in between: a plain display foil glued to the inner housing. A step, a step of marking the displayed symbol on the display foil, and then a step of gluing the outer housing onto the marked display foil. The optional intermediate step can include, for example, a heat application step to accelerate the curing of the adhesive, or a cooling step after laser marking the display foil.

The inner housing may be formed to include a transparent part and an opaque part to help illuminate the symbol of the display foil clearly and accurately without illuminating the adjacent area of the display foil. More specifically, the inner housing can include a transparent portion aligned with and positioned below the display symbol of the display foil and a non-transparent portion surrounding the transparent portion. The non-transparent portion can have a ring shape and / or can form a shadowing fence that prevents light passing through the transparent portion from diffusing into other portions adjacent to the display symbol.

More specifically, the inner housing can be formed as a two-component or multi-component component containing parts of different materials. For example, the inner housing may be a molded plastic component made from two different plastic components, one transparent and the other opaque.

If the display foil contains multiple display symbols that can be arranged in a regular pattern, such as a matrix of symbols, the inner housing can have multiple transparent portions aligned at the positions of the display symbols, said transparent. Each of the housing parts can be at least partially surrounded by a non-transparent housing part. The non-transparent housing portion that separates the transparent housing portions from each other may form a mesh or grid-like opaque structure that separates the transparent portions of the inner housing from each other, aligned with the display symbol. For example, the transparent portion of the inner housing can be formed from transparent hard plastic material components, and the non-transparent grid structure can be formed from opaque soft material plastic components.

In addition to, or as an alternative to, such a wall structure of the inner housing, including transparent and non-transparent parts, a shadowing fence structure may be provided between the inner surface of the inner housing and the light source. More specifically, such a shadowing fence structure inside the inner housing may include at least one non-transparent sleeve that surrounds at least one light source and extends from the light source to the inner surface of the inner housing. The longitudinal axis of such a sleeve can extend substantially perpendicular to the inner housing and / or display foil and / or substantially parallel to the main light emitting axis of the light source.

If there are multiple light sources associated with multiple display symbols, they form an optical pipe that directs the light from each light source to the display symbol associated with that light source, and such light is directed to another display symbol. A plurality of such sleeve-like shadowing fences can be provided to prevent the light from spreading. Further, when the display symbols and the light sources associated with them are arranged in a regular pattern such as a matrix of light sources, the sleeve-shaped shadowing fence is formed by recesses in the material and the corresponding display from the light source. Symbols, more specifically, can form a grid or mesh structure of opaque material with optical channels associated with such display symbols that extend to the transparent portion of the inner housing.

The light source may be located on a common circuit board for supplying electrical energy to the light source and / or controlling the light source. A sleeve-like shadowing fence forming an optical pipe can extend between such a circuit board and the inner housing, and the shadowing fence structure can be a circuit board in a fixed fashion, for example by gluing or press-fitting contact. And / or can be attached to the inner housing.

To compensate for the concavo-convex surfaces of the circuit board and / or inner housing, the shadowing fence structure allows complete contact of the surface of the circuit board and / or inner housing regardless of those concavo-convex parts. It can be made of sex material. More specifically, the shadowing fence structure can be formed of a sponge material such as porous rubber or sponge rubber capable of self-adapting its contour to the contact surface.

The inner housing can form a sealed, especially waterproof container, in which the motor and / or battery or accumulator or other power source and / or the ECU for controlling the light source of the motor and display Can be received and protected against liquids and moisture, the container can be formed by elongated pots or cups with a barrel structure, closed bottom side and open top side, motors, ECUs, and batteries. Can be fully accepted within such a cup element of the inner housing, which can be closed on the open top side by a cover element which can form the surface of the barrel-shaped container forming the inner housing.

Thereby, the barrel-shaped container forming the inner housing can have only two pieces, that is, a two-piece structure including the cup element and the cover element described above. Such a two-piece construction of the inner housing significantly reduces the sealing effort required to make the container waterproof. In particular, it may be sufficient to use only one ring seal to seal the interface between the cup element and the cover element, such an interface may have a circular shape, but an egg. Other contours, such as shaped or oval contours, may be possible.

The cup element may include a transparent portion aligned with the display foil.

The cup-shaped base element described above has an elongated shape that extends substantially the entire length of the inner housing and may have a length corresponding to at least 80% or 90% of the inner housing and / or handle, while. The cover element can have a length less than 20% or less than 10% of the length of the inner housing and / or the length of the handle. Such cover elements may have a disc-like or plate-like shape and may have a slightly dome-like or convex contour.

A connector for connecting to the support structure of the shaver head can be provided on the cover element described above.

The inner housing cover and cup elements can be tightly connected to each other and various known connection techniques such as shape fitting, screwing, welding, gluing, and / or snap fitting can be used. ..

A support frame fitted with the above components is inserted into the cup element to hold the display light source arrangement and / or the motor and / or ECU and / or battery in the proper position within the inner housing. It can be held in place in it and can provide sliding guide elements such as guide grooves and / or guide protrusions. Such a support frame may be formed by a circuit board that carries a light source and / or forms part of an ECU, or may include a circuit board.

To aid in sealing the inner housing, the inner housing can have only one opening, which may be an opening in the cover element over which the shaft protrudes. Optionally, there may be a second opening at the end opposite the cover element, which second opening may be provided for a charging connection. However, such a second opening may be avoided by integrating the charging connector within the inner housing, for example, by molding the charging pin as an integral part of the inner housing.

To allow communication with controls within the inner housing, the inner housing and / or outer housing can include a soft material portion that can be deformed to activate a switch located within the inner housing. ..

To allow access to the soft material portion of the inner housing associated with the switching means, the outer housing can have a soft material portion and / or a recess or opening through the recess or opening. , The soft material part of the inner housing can be deformed.

The outer housing can have a two-piece, three-piece, or multi-piece shell structure that includes multiple shell elements that can be connected to each other and can cover different parts of the inner housing. In particular, the outer housing can include two shell elements that extend to opposite sides of the inner housing and are connectable to each other. Such shell elements can have substantially-roughly-flute-like or chute-like contours so that both shell elements can substantially completely surround the inner housing. ..

In addition to such shell elements, the outer housing may further include a ring element connected to at least one of the shell elements described above. Such ring elements can help form a strong and strong outer housing structure, such ring elements can be located at the end of the housing facing the shaver head. More specifically, such a ring element can surround the shaft and may have an inner diameter that is significantly smaller than the maximum diameter of the inner housing.

Considering the handle as a whole, the handle may have an elongated shape in which the cross section can increase substantially continuously from the bottom surface of the handle to the top surface of the handle opposite to the bottom surface of the handle. In other words, the cross section of the handle can increase continuously towards the shaver head. This cross-sectional shape may vary, and such cross-sectional shapes may be substantially round and / or circular and / or oval and / or oval. "Substantially continuously" does not exclude some parts such as display parts or operation key parts whose cross section does not increase. Nevertheless, considering a larger proportion, the cross section of the handle can increase from the lower end to the upper end.

Further, the drive transmission device may include a shaft extending from the handle to the inside of the shaver head, or a shaft-like elongated drive element.

As mentioned earlier, a crank arm can be attached to the shaft to convert the rotational vibration of such a shaft into the linear vibration of at least one cutter element, such a crank arm within the shaver head. It can be positioned and / or can support at least one drive pin for driving the cutter element. For example, such drive pins may extend substantially parallel to the shaft, or may be fixed to the crank arm and extend eccentrically with respect to the shaft shaft. When the crank arm extends substantially perpendicular to the desired linear vibration of the cutter element in the neutral position, such drive pins are tangentially curved with respect to the desired cutter element vibration. It is moved along the path, thus performing a substantially linear vibration.

These and other features will become apparent from the examples shown in the drawings. As can be seen from FIG. 1, the shaver 1 may have a shaver housing 300 that forms a handle 2 for holding the shaver, which allows the shaver to be ergonomically gripped or held. -Roughly speaking-may have substantially different shapes such as a cylindrical shape or a box shape or a bone shape, and such a shaver handle 2 has an elongated shape of the handle (see FIG. 1). Due to this, it has a longitudinal axis 20.

More specifically, the handle 2 may have a round or circular or oval or oval cross-sectional shape, and a mixture of these shapes is also possible. Regardless of the cross-sectional shape, the cross-section can increase continuously from one end of the handle to the other end.

At one end of the handle 2, an electric shaver head 3 is attached to the handle 2, which can be rotatably supported around a swivel shaft 7 and around a tilt shaft 11, with the swivel shaft and tilt shaft 7 and. The eleven may extend substantially perpendicular to each other and perpendicular to the longitudinal handle shaft 20 described above.

Considering the horizontally long spindle 40 of the shaver head 3, the swivel axis 7 may extend parallel to such a spindle 40, and the tilt axis 11 extends perpendicular to such a spindle 40. You may be doing it. Such a spindle 40 is parallel to the larger side of the shaver head 3 and / or parallel to the longitudinal axis of the elongated cutter element 4 and / or parallel to the swing axis 8 of the cutter and / or longitudinal. It can be considered that it extends substantially perpendicular to the handle shaft 20 in the direction.

The shaver head 3 can include a pair of elongated cutter portions 100, each comprising an elongated cutter element 4 that can be driven in a reciprocating fashion along a reciprocating shaft 8 that can extend parallel to the spindle 40. .. The cutter element 4 can cooperate with and reciprocate under the shear foil 5 covering the cutter element 4.

As can be seen from FIGS. 1 to 3, the shaver head 3 is supported on the handle 2 by the support structure 30.

In addition to the support structure 30, an elongated drive transmission device may extend from the handle 2 into the shaver head 3 so as to connect the cutter element 4 to a motor 93 that may be housed inside the handle 2. Such an elongated drive transmission device 9 can include a shaft 90 that can be driven to rotate in a reciprocating fashion, i.e. to some extent back and forth. The crank element is rotatably fixed to the shaft 90 and may be housed inside the shaver head 3. Such a crank element can firmly support the drive pins for each of the cutter elements 4. The crank element extends laterally with respect to the longitudinal axis of the elongated cutter element 4 so that the drive pin moves back and forth along the longitudinal axis of the cutter element 4 when the shaft 90 is in the neutral position. obtain. More specifically, such drive pins move along a segment of the circle. However, such motion is along the longitudinal axis of the cutter element, as the rotational vibration has a limited amplitude and the circular segment is tangential to the longitudinal axis of the cutter element 4. It can be considered to be close to a linear movement.

As can be seen from FIG. 3, the housing 300 forming the handle 2 has a two-shell structure including an inner housing 301 and an outer housing 302 (including parts 305, 304, 302d) surrounding the inner housing 301. Can have.

The inner housing 301 houses the motor 93, a power storage device such as a battery or an accumulator, and an ECU (see FIG. 3), and the inner housing 301 is a waterproof container that protects such components from liquids and moisture. Can form.

More specifically, the inner housing 301 can have an elongated barrel-like structure including a cup-shaped or pot-shaped base element 306 with a closed bottom surface and an open top surface, the base element of the handle 2. It can extend substantially over the entire length (see FIGS. 2 and 3).

The base element 306 can have a plate-like or slightly dome-like shape and is opened by a cover element 307 forming the surface side of the inner housing 301 facing the shaver head 3 when the base element 306 is closed. The upper surface side is closed.

The cover element 307 includes an opening through which the shaft 90 penetrates the housing, and the cover element 307 is provided to the shaft 90 and the cover element 307 by an appropriate seal so that the inner housing 301 forms a waterproof container. Is sealed against.

As can be seen from FIG. 3, the charging connection, such as the charging pin 310, may project from the bottom surface side of the cover element 307 to allow charging of the battery inside the inner housing 301.

The inner housing 301 may include at least one soft material portion 309 associated with electronic switching means within the inner housing 301.

As can be seen from FIG. 3, the outer housing 302 may both have a shell structure comprising a pair of elongated shell elements 304 and 305 capable of substantially enclosing the inner housing 301 as a whole. Shell elements 304 and 305 may extend substantially the entire length of the inner housing 301 and / or handle 2.

The shell elements 304 and 305 may be positioned on opposite sides of the inner housing 301 and may be connected to each other so as to together form a gripping surface of a substantially conical or cylindrical handle 2.

Further, the outer housing 302 may include a ring element 303 that at least partially forms the upper surface side surface of the outer housing 302 facing the shaver head 3, which is greater than the maximum outer diameter of the inner housing 301. It can have a substantially smaller inner diameter. The ring element 303 is connected to at least one of the shell elements 304 and 305 and can cover the ring-shaped portion of the cover element 307 of the inner housing 301.

Further, there is a display 500 for displaying various information useful to the user of the device, such a display 500 may be arranged in the housing 300 forming the handle 2. Such a display 500 may include a plurality of display symbols 501an indicating information such as battery mounting status, cleaning status, recent shaving time, or other information as described above.

The display 500 includes a display foil 502 that may include transparent and non-transparent parts that form the symbol, or different colored parts that form such a symbol 501an, and the light source 503, such as an LED, is a display foil. Light can be emitted to illuminate the 502 symbol.

As can be seen from FIGS. 3-9, the display foil 502 can be positioned between the inner housing 301 and the outer housing 302, and the inner and outer housings 301, 302 can be housed in the inner housing 301. It may include a transparent portion that allows the light emitted from the 503 to be transmitted through the inner housing 301, the display foil 502, and the outer housing 302.

More specifically, the outer housing 302 may include a transparent outer housing display 302d that may be part of the shell structure and one of the shell elements of the shell structure. The outer housing display portion 302d may have a size comparable to that of the display foil 502 and / or may substantially cover the entire display foil 502.

As can be seen from FIG. 3, the outer housing display 302d can form an insert that can be formed by one of the shell elements 304 and can be further inserted into the window of the outer housing component. The shell element 304 is an edge of a window portion forming a kind of window frame, which is advantageous because it can overlap the outer side of the outer housing 302 at the edge portion. In other words, the outer housing display portion 302d can be inserted into the window portion of the shell element 304 from the inside of the shell element. As a result, the force that urges the outer housing 302 to separate from the display foil 502 is not transmitted to the outer housing display portion 302d and / or, as will be described later, adheres the display foil 502 to the inner and outer housings. It may not be impaired.

The inner housing 301 may have a transparent inner housing display 301d that may form an integral portion of the base element or cup element 306 described above. More specifically, the inner housing 301 may have a plurality of transparent portions in a region facing the display foil 502. Such a plurality of transparent portions 301d may be aligned with the display symbols 501an such that their respective display symbols are directly positioned in the center thereof on the upper surface of the corresponding transparent portion 301d.

Corresponding to the matrix pattern of the display symbols 501an, the transparent portion 301d of the inner housing 301 may also be arranged in the matrix pattern.

To avoid scattering light on different display symbols, the transparent portion 301d of the inner housing 301 may be separated from each other by a non-transparent, opaque inner housing portion 301o. When the transparent display units 301d are arranged in a matrix pattern, the opaque housing portion 301o may form a grid or net-like structure that forms a shadowing fence structure.

The inner housing 301 can be formed as a two-component or multi-component molded plastic part, for example the transparent inner housing display 301d can be made of clear hard plastic and is formed by the opaque housing portion 301o described above. The grid-like shadowing fence structure can be made of opaque soft plastic material.

As can be seen from FIGS. 4 to 9, the light source 503, which can be similarly arranged in the matrix pattern corresponding to the pattern of the display symbols 501an, controls the electric wire for supplying power to the light source 503 and the light source 503. It may be supported on a circuit board 504 which may include electronic circuit components for this purpose.

As can be seen from FIG. 3, the circuit board 504 including the light source 503 can be preassembled with the motor 93 and the battery compartment to form a preassembled mounting structure that can be inserted into the inner housing 301.

An optical shadowing fence 505 is provided between the circuit board 504 and the inner surface of the inner housing 301 to avoid scattering and diffusing light into the region between the circuit board 504 and the inner housing 301. You may. Such a fence structure 505 may include a sleeve for each light source 503, which may surround the associated light source 503 and extend from the circuit board 504 to the inner surface of the inner housing 301. When there are a plurality of light sources 503, a plurality of sleeve-shaped shadowing fences may be provided as a fence structure 505, each of which extends from the light source 503 to the associated display symbol 501a-n. It may have a matrix-like or grid-like or net-like structure for providing an optical pipe or an optical channel of the light source.

Such an inner shadowing fence structure 505 may be made of an elastic and / or sponge-like material such as a rubber sponge and may be in complete contact with the surfaces of the circuit board 504 and the inner housing 301. For example, the fence structure 505 may be secured to the circuit board 504 and / or the inner housing 301, for example by adhesive or press-fit contact.

As can be seen from FIGS. 5 to 9, the display foil 502 is adhered to the outer surface of the inner housing 301 and the inner surface of the outer housing 302 by the adhesive layers 506 and 507 on each side of the display foil 502. .. 520 of FIGS. 5 to 9 shows a black laser active layer, and 521 shows a white PET base foil.

On at least one side of the display foil 502, a continuous adhesive layer 506, 507 is provided to completely cover the display foil 502, such a continuous adhesive layer can be made of a transparent adhesive and allow light to pass through. There is an advantage that makes it possible to do. With such a continuous full size transparent adhesive layer, the display foil 502 or at least most of it is in complete contact with the corresponding inner or outer housing surface, thereby folds or wrinkles of the display foil 502 or other desirable. Prevents no deformation.

As can be seen from FIG. 5, such full size adhesive layers 506 and 507 can be provided on both sides of the display foil 502.

Alternatively, a frame that provides such a continuous full-size transparent adhesive layer on only one side of the display foil 502 and the other side of the display foil 502 has a window that opens the central portion of the display foil 502. The shape of the adhesive layer may be used to adhere to the corresponding housing component. The advantage of such windows is, on the one hand, to minimize or avoid the generation of air bubbles due to improper fixation of the adhesive layer to the housing, and on the other hand, to improve light transmission. ..

As can be seen from FIG. 6, the bottom surface side of the display foil 502 can be adhered to the inner housing 301 by a transparent adhesive layer 506 that completely covers the display foil 502, and the top surface side of the display foil 502 is the central portion of the display foil 502. Can be adhered to the outer housing 302 by a frame-shaped adhesive layer 507 having a central window 507w that opens.

Alternatively, as shown in FIG. 7, the bottom surface side of the display foil 301 is completely covered with the display foil 502 by the frame-shaped adhesive layer 506 having a central window 506w, while the top surface side of the display foil 502 is completely covered with the display foil 502. It can be adhered to the outer housing 302 by a continuous full size adhesive layer 507.

The frame-shaped adhesive layer having a central window can be formed of a non-transparent, opaque adhesive.

As can be seen from FIGS. 8 and 9, such a frame-like adhesive layer with a central window is a PU foam or PU foam or so as to compensate for the tolerance of the display foil 502 in the distance to the inner housing 301 or the outer housing 302. It can be formed of an adhesive foam such as a PE foam. Such an adhesive foam layer can have a multi-layer structure in which the foam material can form a central or inner layer and adhesive adhesive layers are provided on both sides to form the surface of the adhesive foam layer (FIG. 8 and FIG. 9).

As can be seen from FIGS. 8 and 9, the adhesive foam layer may be provided on the upper surface side of the display foil 502 to adhere the display foil to the outer housing 302, or may be provided on the bottom surface side of the display foil 502. The display foil may be adhered to the inner housing 301. The other side of the display foil 502 of these two examples of FIGS. 8 and 9 can be adhered to the other housing component by a continuous, substantially full size transparent adhesive layer.

As shown in FIGS. 5-9, the display foil 502 may include a laser active layer that allows the display symbol 501an to be created in the laser processing step in which the laser light is applied to the display foil 502.

Such laser treatment can be performed after the display foil 502 is adhered to the inner housing 301, which is advantageous. After applying the laser marking to the display foil 502 to form the display symbol 501, the outer housing 302, more specifically the outer housing display portion 302d, may be adhered to the top surface of the display foil 502. As mentioned above, alternative laser treatment may be applied at the end of the shaver assembly process.

In a further manufacturing step, the other shell elements 304 and 305 of the outer housing 302 may be assembled to form the outer housing 302.

As can be seen from FIGS. 2 and 3, the shaver's pre-assembled electronic core includes a light source 503 supported on the circuit board and, optionally, a circuit board 504 with a motor 93 and a battery compartment. The display foil 502 can be inserted into the inner housing 301 before the display foil 502 is glued onto the inner surface of the inner housing 301, and the inner housing 301 is completely closed before the display foil 502 is glued onto the inner housing 301. And / or can be sealed. Alternatively, the display foil 502 may be glued onto the inner housing 301 and / or laser marking of the display foil may be performed before the electronic core containing the circuit board 504 is inserted into the inner housing 301. ..

The dimensions and values disclosed herein should not be understood to be strictly limited to the exact numbers given. Rather, unless otherwise indicated, each such dimension is intended to mean both the stated value and the functionally equivalent range around that value. For example, the dimension disclosed as "40 mm" shall mean "about 40 mm".

Claims (16)

A personal care device, a housing (300) to which a work head (3) is attached.
A housing (300) including an inner housing (301) and an outer housing (302) and a transparent portion (301d, 302d) of the inner and outer housings (301, 302) housed in the inner housing (301). A display (500) comprising a light source (503) that emits light through, further comprising a display foil (502) having different transparency and / or different colored portions forming a display symbol (501). The display foil (502) comprises a display (500) sandwiched between the transparent portions of the inner and outer housings (301, 302), and the display foil (502) is the display foil (502). Adhesives (508) on each of the sides of 502) are glued to both the inner and outer housings (301, 302).
The adhesive (508) forms at least one closed sealing loop surrounding the display symbol (501) on each of the sides, and the display foil (502) is placed on the inner and outer housings (502). A personal care device that seals against 301, 302) and prevents liquids or moisture from coming into contact with the display foil (502) inside the sealing loop of the adhesive. On one side of the display foil (502), the adhesive (508) is a transparent adhesive layer (506, 507) covering at least most of the display foil (502), including the display symbol (501). ), And on the opposite side of the display foil (502), the adhesive (508) opens a central portion of the display symbol (501) and / or the display foil (502). The personal care device according to claim 1, wherein an adhesive layer (506, 507) having 506w, 507w) is formed. The personal care device according to claim 1 or 2, wherein the adhesives (508) on both sides of the display foil (502) are transparent adhesives. The personal care device according to claim 2, wherein the adhesive layer (506, 507) having the windows (506w, 507w) is made of a non-transparent adhesive. The personal care device according to any one of claims 1 to 4, wherein at least one side of the display foil (502) is adhered to the housing (300) by an adhesive foam. The adhesive layer (506, 507) having the window (506w, 507w) has an adhesive foam layer and / or an adhesive polyurethane foam layer and / or an adhesive polyethylene foam layer, and / or the window on the inner housing side. The personal care device according to any one of claims 1 to 5, which comprises providing. The outer housing (302) is composed of a plurality of housing portions, and the outer housing display portion (302d) to which the display foil (502) is adhered is another housing portion (304) of the outer housing (302). ), The personal care apparatus according to any one of claims 1 to 6, which forms a substantially plate-like transparent insert that is received in the window frame portion. The personal according to any one of claims 1 to 7, wherein the additional outer housing portion (304) having a window edge portion overlaps the outer surface of the outer housing display portion (302d) at the edge portion. Care device. A transparent hard plastic material component in which the inner housing (301) forms the at least one transparent inner housing display portion (301d) aligned with the display foil (502), and the inner housing display portion (301d). The preamble of claim 1 or the personal care according to any one of claims 1 to 8, which is a multi-component plastic molded part made of an opaque soft or hard plastic material portion (301o) surrounding the). Device. The inner housing (301) includes a grid-like shadowing fence structure (301o) made of an opaque material, the shadowing fence structure aligning with the display symbol (501) of the display foil (502). The plurality of transparent housing portions (301d) are separated from each other, and the shadowing fence structure passes through one of the plurality of transparent housing portions (301d) and of the display symbol (501). The personal care device according to any one of claims 1 to 9, which prevents the light transmitted to one of the two from being diffused and scattered toward one of the other display symbols (501). .. The at least one light source (503) is surrounded by a sleeve-shaped optical pipe (509) extending from the light source (503) to the inner surface of the inner housing (301), and the optical pipe (509) is the said. The invention according to any one of claims 1 to 10, which has a substantially straight longitudinal axis substantially parallel to the main emission direction of the light source (503) and substantially perpendicular to the display foil (502). The personal care device described. The optical pipe (509) is made of sponge material or rubber sponge and is formed on the inner surface of the inner housing (301) and on the surface of a circuit board (504) supporting at least one light source (503). The personal care device according to claim 11 , which is in contact. A plurality of light sources (503) are arranged in a pattern corresponding to the pattern of the display symbol (501), and the plurality of optical pipes (509) emit light emitted by each of the plurality of light sources (503). 11. Provided to limit to one of the display symbols (501), said plurality of optical pipes (509) are formed by a grid-like fence structure made of an opaque material. Or the personal care device according to 12. The method for manufacturing the personal care device according to any one of claims 1 to 13.
A step of fixing and attaching a plain display foil (502) to the inner housing (301), and
A method comprising the step of marking the display symbol (501) on the display foil (502) by a marking process after attaching the plain display foil (502). 14. The method of claim 14, wherein the marking process comprises applying laser light to the display foil (502). The marking process is applied after assembly of the shaver housing fitted with all the display parts, and / or the laser beam activation of the display foil is applied through both the outer and inner housings. 14 or 15.

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