JP4811919B2 - Electric razor - Google Patents

Description

  The present invention relates to an electric shaver and is an improved switch structure.

  With respect to the present invention, for example, Patent Document 1 discloses that a switch knob is slidably supported by a switch panel or a decorative panel provided separately from a main body case. In the electric shaver according to the present invention, when the switch knob is pushed up by a certain amount, the motor is activated and the inner blade of the main blade is driven to reciprocate, and when the switch knob is pushed up further, the shaving blade rises to move the movable blade. However, an electric razor having such a two-stage switching type switch knob is known from Patent Document 2. However, in the electric razor of Patent Document 2, the switch knob is slidably supported by a main body case divided into two parts at the front and rear.

Japanese Patent Laying-Open No. 2005-102916 (paragraph number 0023, FIG. 5) JP-A-4-261690 (paragraph number 0017, FIG. 2)

  According to the electric razor of Patent Document 1, since the switch knob is slidably supported by a switch panel separate from the main body case, an impression of appearance can be obtained by assembling a plurality of types of switch panels with different colors into the main body case. Electric razors with different can be commercialized as a series. However, since the engaging claw provided on the joint surface of the switch panel is press-fitted into the engaging hole of the main body case to fix the switch panel to the main body case, the switch panel may be rattled. The switch panel is covered with a decorative case to prevent the switch panel from rattling, but it is inevitable that the case structure is complicated by the amount of the decorative case.

  In the electric razor of Patent Document 2, a switch knob is directly assembled to the front case constituting the main body case, and is supported so as to be slidable. For this reason, particularly when using a sharp shaving blade, there is a risk that the dust enters the main body case from the slide gap between the front case and the switch knob, or from the slide gap between the front case and the shaving case. The dust that enters the main body case may rot and cause a strange odor, and may adhere to the switch terminal and cause poor conduction.

  It is an object of the present invention to provide an electric razor that can firmly fix a switch panel while avoiding a complicated case structure and can improve the operability of a switch knob that is slid. The object of the present invention is to ensure that when using a main blade or a razor blade, it is possible to reliably prevent fouling from entering the main body case, and therefore, it is hygienic and can eliminate electrical troubles such as poor conduction. To provide a razor.

  The electric razor of the present invention has a main blade 2 and a motor 4 for driving the main blade 2, and is further sandwiched between a front case 1a and 1b and a main body case 1 composed of front and rear cases 1a and 1b. A motor holder 10 to be fixed, a switch panel 41 assembled to the front surface of the main body case 1, and a switch knob 42 supported by the switch panel 41 so as to be slidable up and down are provided. On the front surface of the front case 1a, a left and right wide panel recess 39 for accommodating the switch panel 41 is formed. The switch panel 41 includes a guide recess 43 that slides and guides the switch knob 42 and a stopper portion 44 that is formed to bulge at the lower portion of the guide recess 43. 1a is engaged and mounted. Therefore, the switch panel 41 and the switch knob 42 engaged and mounted in the guide recess 43 are received on both side surfaces 39 s of the panel recess 39 so as not to be movable left and right.

  A restriction rib 46 protruding rearward is formed on the upper inner surface of the switch panel 41. Therefore, as shown in FIG. 6, in a state in which the switch panel 41 is fitted and mounted in the panel recess 39, the regulating rib 46 is sandwiched up and down by the stepped portion 74 formed in the front case 1a and the motor holder 10, so that the switch panel The vertical movement of 41 is restricted.

On the front surface of the front case 1a, an upper section chamber 38 that accommodates the left and right laterally long shaving blades 3 and a panel recess 39 having the same width as the upper section chamber 38 are formed adjacent to each other in the vertical direction. The inner section and the inner bottom of the upper section chamber 38 are partitioned by a vertical wall 32 formed in the motor holder 10 and a flange wall 33 continuous to the lower portion of the vertical wall 32. Flange wall of the restriction ribs 46, stepped portion 74 and the motor holder 10 of the front case 1a of the switch panel 41 to the upper end of the front and rear joint surface between the regulating rib 46 and the stepped portion 74 of the front case 1a by Flooding in flange wall 33 33 is held up and down.

  A lock mechanism is provided between the front case 1a and the switch knob 42 to hold the switch knob 42 in the off position. A one-letter finger holding rib 51 bulges toward the center of the plate surface of the switch knob 42, and a release button 60 for unlocking the previous locking mechanism is assembled to the center of the finger holding rib 51 in the width direction. .

  In the present invention, a wide panel recess 39 is formed on the front surface of the front case 1a, the switch panel 41 is engaged with the panel recess 39, and the switch knob 42 is engaged with the guide recess 43 of the switch panel 41. The switch panel 41 and the switch knob 42 are received on both side surfaces 39 s of the panel recess 39 so as not to be movable left and right.

  As described above, when the switch panel 41 is fitted into the panel recess 39 of the front case 1a to be engaged and mounted, and the switch panel 41 and the switch knob 42 are regulated and held on both side surfaces 39s of the panel recess 39 so as not to be movable left and right. Unlike conventional electric razors, the switch panel 41 and the switch knob 42 can be reliably prevented from rattling in the left-right direction. There is no need to provide a separate cosmetic case to prevent rattling. Therefore, according to the electric shaver of the present invention, the switch panel 41 can be firmly fixed to the main body case 1 while avoiding a complicated case structure.

  Since the left and right wide panel recesses 39 are provided and the side surfaces of the switch knob 42 are received by both side surfaces 39s, the left and right widths of the switch knob 42 can be made sufficiently larger than the conventional electric razor, and the switch knob 42 has a corresponding amount. Operability can be improved. For example, even when the user has a large hand or finger, the switching operation can be reliably performed by placing the fingertip on the switch knob 42 having a large area. Since the switch panel 41 is provided separately from the main body case 1, there is an advantage that electric shavers with different appearance impressions can be easily commercialized in series by preparing a plurality of types of switch panels 41 having different colors.

  According to the electric razor in which the regulating rib 46 provided on the upper inner surface of the switch panel 41 is sandwiched vertically between the stepped portion 74 formed on the front case 1a and the motor holder 10, the panel recess 39 is provided in the horizontal direction. In addition to the action of preventing rattling, the vertical movement of the switch panel 41 can be restricted at the same time, so that the switch panel 41 can be further firmly fixed to the main body case 1 to improve the robustness of the electric razor. There is also an advantage that the rattling noise of the switch panel 41 and the switch knob 42 can be reduced.

On the front surface of the front case 1a, an upper compartment 38 for accommodating the shaving blade 3 and a panel recess 39 having the same width as the upper compartment 38 are formed adjacent to each other in the vertical direction. In the electric razor in which the inner bottom is partitioned by the vertical wall 32 and the flange wall 33 formed in the motor holder 10, the upper ends of the front and rear joint surfaces of the regulation rib 46 and the stepped portion 74 of the front case 1 a are connected to the motor holder 10. Covering with the flange wall 33, the restriction rib 46 of the switch panel 41 is sandwiched up and down by the stepped portion 74 of the front case 1a and the flange wall 33 of the motor holder 10. The flange wall 33 can prevent the restriction rib 46 and the stepped portion 74 from entering the front and rear joint surfaces. Even if penetrated hair debris at the interface between the flange wall 33 and the restricting ribs 46, it is possible to prevent the hair debris from entering or being its reliably that the shaving debris on the shaving time enters into the casing 1 Therefore, it is possible to provide an electric razor that is hygienic and highly reliable because it can prevent electrical troubles such as generation of a strange odor and poor conduction. Even when the switch panel 41 is formed of a transparent plastic material, it is possible to eliminate the appearance of unsanitary impressions due to the entry of fuzz into the inner surface.

  A one-letter finger holding rib 51 bulges toward the center of the plate surface of the switch knob 42, and a release button 60 for unlocking the lock mechanism is assembled to the center of the finger holding rib 51 in the width direction. According to the electric razor, the fingertip applied to an arbitrary position of the switch knob 42 can be brought into contact with the finger rest rib 51 only by moving the fingertip up or down, and can be guided to the release button 60 at the center thereof. The fingertip can be placed at an appropriate position, and the usability of the electric razor can be further improved in combination with the fact that the left and right width of the switch knob 42 is sufficiently large.

(Embodiment) FIGS. 1 to 8 show an embodiment of an electric shaver according to the present invention. 1 to 3, the electric razor drives the main body case 1, the main blade 2 provided on the upper portion of the main body case 1, the shaving blade 3 provided on the upper front surface of the main body case 1, and the two blades 2 and 3. The motor 4 and the secondary battery 5 are configured.

  The main body case 1 is composed of a front case 1a and a rear case 1b which are divided into two parts in the front and rear directions. After the cases 1a and 1b are joined together in a lid shape, four screws 6 (Fig. 4) And is configured in a cylindrical case shape. A motor holder 10 and a plug case 11 are sandwiched and fixed between the upper and lower inner surfaces of the front and rear cases 1a and 1b.

  The main blade 2 includes an inner blade 13 formed of a slit blade and an outer blade 15 having a mesh blade structure that is held in an arch shape by an outer blade holder 14. As shown in FIG. 4, the rotational power of the motor 4 is converted into reciprocating power by the eccentric cam 16 and the vibrator 17, and then transmitted through a drive shaft 18 provided on the vibrator 17 so that the inner blade 13 reciprocates. Driven. The periphery of the drive shaft 18 is sealed with a packing 19 that prevents intrusion of hair chips. The outer blade holder 14 is detachably fitted to the upper head portion of the main body case 1 and is locked and held by lock claws 20 provided on both sides of the motor holder 10.

  In FIG. 6, the sharp shaving blade 3 is configured to be horizontally long with a fixed blade 22 composed of a comb blade fixed to a holder 21 and a movable blade 23 having a comb-tooth structure that reciprocally slides along the fixed blade 22. The movable blade 23 is driven to reciprocate using the reciprocating power of the previous vibrator 17. The sharp shaving blade 3 can swing up and down between a standby posture shown by a solid line in FIG. 6 and an operating posture shown by an imaginary line in FIG. At the same time, the passive arm 24 provided on the movable blade 23 engages with the driving claw 25 protruding from the front portion of the vibrator 17 to inherit the reciprocating power.

  Inside the main body case 1, electrical components such as the motor 4, the secondary battery 5, the control board 26, and the transformer 27, the vibrator 17, the motor holder 10, the plug case 11, and the like are accommodated. The plug case 11 is assembled with a power receiving plug 28 so as to be slidable. A changeover switch 29 that is slid according to whether the power supply voltage is 100 V or 200 V is provided below the front case 1a. The previous transformer 27 is provided to step down to 100V when the power supply voltage is 200V.

  The motor holder 10 protrudes from a flat plate-shaped fastening seat 31, a vertical wall 32 standing at the front upper surface of the fastening seat 31, a flange wall 33 continuous to the lower portion of the vertical wall 32, and a lower surface of the flange wall 33. It is made of a plastic molded product in which the receiving wall 34 and the previous locking claw 20 are integrally formed. The motor 4 is fastened and fixed to the fastening seat 31 by a screw 35 screwed from the upper surface side of the motor holder 10, and is positioned forward and backward by the receiving wall 34.

  On the front surface of the front case 1a, an upper section chamber 38 for housing the left and right laterally long shaving blades 3 and a panel recess 39 are formed adjacent to each other in the vertical direction. As shown in FIG. 6, the inner back and inner bottom of the upper compartment 38 are partitioned by the vertical wall 32 and the flange wall 33 of the motor holder 10. The panel recess 39 has the same width as that of the upper section chamber 38 and is sized to occupy the majority of the front case 1a, and the entire switch panel 41 is fitted and mounted therein. In this embodiment, when the entire left and right width of the main body case 1 is 50 mm, the left and right width of the panel recess 39 is set to 32.5 mm, which is set slightly larger than the left and right dimensions of the fine shaving blade 3.

  As shown in FIGS. 1 and 3, the switch panel 41 has a guide recess 43 that slides and guides the switch knob 42 on the front side of the panel and a bulge formed below the guide recess 43 to define the off position of the switch knob 42. The stopper part 44 to be provided. The left and right widths of the guide concave portion 43 and the stopper portion 44 are set to width dimensions that can be closely fitted in the panel concave portion 39.

  A pair of left and right downward engaging protrusions 45 are formed at the lower end of the stopper portion 44, and a linear regulating rib 46 projecting rearward and a pair of left and right engaging claws 47 are formed on the upper inner surface of the guide recess 43. And are integrally formed. The lower end surface of the panel recess 39 and the lower end surface of the guide recess 43 are each formed as a partially concave partial arc surface, and the lower surface of the switch knob 42 and the lower surface of the stopper portion 44 correspond to the previous partial arc surface. It is formed with a downward convex partial arc surface.

  A protrusion recess 48 for receiving the engagement protrusion 45 is formed at the lower end of the panel recess 39, and a claw hole 49 for receiving the engagement claw 47 is formed at the upper part of the panel recess 39. The left and right engaging protrusions 45 are inserted into and engaged with the protrusion recesses 48 from above, and the left and right engaging claws 47 are press-fitted and engaged with the claw holes 49 from the front in this state. It can be engaged and attached to 1a inseparably. In this assembled state, the surface of the stopper portion 44 is flush with the surface of the front case 1a. Openings 39 a and 43 a that allow the engaging legs 52 of the switch knob 42 to slide up and down are formed in the plate surface of the panel recess 39 and the switch panel 41. On one side of the stopper portion 44, a charging indicator lamp 7 that is turned on during charging is incorporated (see FIG. 1).

  The switch knob 42 is formed of a plate-like body having the same width as the switch panel 41 and occupying an area of 70% or more of the guide recess 43, and a single-letter-shaped finger retaining rib 51 is formed in a bulging manner on the front surface. A pair of left and right engaging legs 52 are integrally formed. The switch knob 42 is fitted into the guide recess 43, the engaging leg 52 is inserted into the openings 39a and 43a, and the claw portion at the tip of the engaging leg 52 is press-fitted into an engaging hole 58 of the slide plate 55 described later. As a result, the switch knob 42 and the slide plate 55 are integrated so as to be able to move together with the panel recess 39 and the plate surface of the switch panel 41 therebetween (see FIG. 8).

  In this assembled state, the surface of the switch knob 42 is flush with the stopper portion 44 and the surface of the front case 1a. The switch knob 42 can slide up and down within the vertical range of the previous openings 39a and 43a, and the knob side surface 42s is slid and guided by the side surfaces 39s of the panel recess 39 in a state in which left-right movement is restricted. Actually, the facing gap between the knob side face 42s and both side faces 39s of the panel recess 39 is set to 0.1 to 0.2 mm so that the switch knob 42 can be slid up and down while restricting left-right movement.

  A moderation mechanism is provided to hold the switch knob 42 at each of the OFF position shown in FIG. 1, the ON position where the switch knob 42 is pushed upward from the OFF position, and the shaving position where the switch knob 42 is further pushed up from the ON position. A lock mechanism for holding the knob 42 in the off position is provided.

  The moderation mechanism is provided between the front case 1a and the slide plate 55 disposed on the inner surface of the front case 1a. Specifically, as shown in FIG. 7, a pair of elastic claws 56 integrally formed on the lower surface of the slide plate 55 and a pair of upper and lower moderation pins (not shown) protruding from the inner surface of the front case 1a The mechanism is configured so that the switch knob 42 can be held in position each time the elastic claw 56 gets over the moderation pin. Engagement holes 58 that engage with the claw portions of the previous engagement legs 52 are formed on the left and right sides of the plate surface of the slide plate 55.

  The lock mechanism is provided between the front case 1 a and the switch knob 42 using the slide plate 55. Specifically, as shown in FIG. 7, a lock arm 59 that can be elastically deformed in the front-rear direction is integrally formed at the left and right center part of the slide plate 55, and a release button 60 is integrally formed on the front surface of the upper end. Further, a lock hole 61 is formed in the plate surface of the lock arm 59 located near the base end of the release button 60, and a protrusion 62 (see FIGS. 3 and 5) that falls into the lock hole 61 and engages with the inner surface of the front case 1a. Form. In a state in which the slide plate 55 is integrated with the switch knob 42 so as to be able to accompany, the release button 60 is exposed from the button window 63 formed in the central portion of the finger holding rib 51 as shown in FIG.

  When the switch knob 42 is in the OFF position, the protrusion 62 falls into the lock hole 61 and engages therewith, so that the switch knob 42 cannot be pushed up as it is. However, when the release button 60 exposed from the button window 63 is pushed in, the lock arm 59 is elastically deformed and the engagement state between the lock hole 61 and the protrusion 62 is released, so that the switch knob 42 is pushed up to the ON position. it can. Further, when the switch knob 42 is pushed up, the shaving blade 3 can be switched from the standby posture to the operating posture.

  In FIG. 7, the mechanism for switching the posture of the sharp shaving blade 3 includes a cantilevered operating arm 66 provided on the upper portion of the slide plate 55, and a link bar 67 that swings up and down in response to the sliding motion of the operating arm 66. And a switching lever 68 that is operated up and down by a link bar 67. A claw 69 at the upper end of the switching lever 68 is engaged with a step provided on the holder 21 of the sharpening blade 3. When the switch knob 42 is further pushed up from the ON position, the free end of the operating arm 66 comes into contact with and engages with one end of the link bar 67, and the link bar 67 is swung around the shaft 70. Slide down. As a result, the wrinkle blade 3 swings upward around the support shaft 71 and switches to the operating posture, and the passive arm 24 of the movable blade 23 engages with the driving claw 25 of the vibrator 17 so that the vibrator 17 Inherits reciprocal vibration. When the switch knob 42 is returned to the off position, the scraper blade 3 is returned to the standby position.

  The motor 4, secondary battery 5, transformer 27, control board 26, drive system such as the motor holder 10 and the vibrator 17, and the main blade 2 are all assembled to the front case 1a. Further, the switch panel 41, the switch After assembling the knob 42 and the wrinkle shaving blade 3 to the front and rear cases 1a and 1b, the rear case 1b is joined to the front case 1a and both are fastened with screws 6 to complete the electric razor. In this assembled state, the front case is used to prevent rattling of the switch panel 41 and at the same time to prevent hair dust from entering the inside of the main body case 1 through the upper section chamber 38 when using the shaving blade 3. The joining structure of 1a, the motor holder 10, and the switch panel 41 is comprised as follows.

  As shown in FIG. 6, at the upper joint surface between the switch panel 41 and the front case 1a, a regulation rib 46 provided on the back side of the switch panel 41 is provided with a stepped portion 74 formed on the front case 1a and the flange of the motor holder 10. The switch panel 41 is fixedly held so as not to move up and down by being sandwiched up and down by the wall 33. At the same time, the lateral movement of the switch panel 41 is restricted by the side edges of the panel recess 39. Further, the upper end of the joint surface between the step 74 of the front case 1a and the regulating rib 46 is covered with the flange wall 33 of the motor holder 10, and the upper joint surface of the flange wall 33, the switch panel 41, and the front case 1a is continuous. It is formed as a folded surface. The restriction rib 46 is formed integrally with the switch panel 41 and continuously over the entire width of the panel 41. Actually, the left and right width of the regulating rib 46 is set slightly smaller than the left and right width of the panel 41. The upper surface and the rear end surface of the holding wall 75 where the stepped portion 74 is formed are joined to the flange wall 33 and the receiving wall 34.

  As described above, when the joining surfaces of the flange wall 33 and the switch panel 41 and the switch panel 41 and the front case 1a are configured as a continuous folded curved surface having an orthogonal maze shape, fuzz attached to the upper surface of the flange wall 33 is In addition to intrusion while changing the intrusion direction several times along the continuous folding surface, it does not reach into the main body case 1 even under the situation where the reciprocating vibration of the electric razor acts. Therefore, the fluff in the upper section chamber 38 does not enter the front / rear joint surface between the restriction rib 46 and the stepped portion 74, and even if the hair fray enters the joint surface between the flange wall 33 and the restriction rib 46. In addition, it is possible to prevent further intrusion of fuzz on the continuous folding surface. Further, since the regulating rib 46 is formed over the entire width of the switch panel 41, the stepped portion 74 and the flange wall 33 can be continuously blocked by the regulating rib 46 over the entire lateral width direction, and the intrusion is caused by the previous continuous curved surface. In addition to the blocking action, it is possible to more reliably prevent the intrusion of hair fouling. When the switch panel 41 is formed of a transparent plastic material, the fluff that has entered the inner surface gives an unsanitary impression, but such a problem can be reliably prevented.

  Further, when the switch knob 42 is switched or when the switch panel 41 is pressed against the front case 1a by an external force acting on the upper portion of the switch panel 41, the motor 4, the receiving wall 34, and the front case 1a are clamped. Since the wall 75 and the guide recess 43 cooperate to receive the switch panel 41, the switch panel 41 can be well prevented from being bent and deformed by the previous external force, and the switch knob 42 can be slid in a stable state. The rear surface side of the motor 4 is received by a pair of upper and lower receiving ribs 76 provided on the inner surface of the rear case 1b, and a clamping portion 77 provided above the receiving rib 76 and receiving the upper corner of the motor 4. Yes.

  In addition to the above embodiment, the main blade 2 can have a rotary cutting blade structure. The moderation mechanism can be provided between the switch knob 42 and the side wall 39 s of the panel recess 39. The present invention can also be applied to an electric razor that does not include the sharp razor blade 3. In that case, the upper section chamber 38 is omitted, and the opening is closed by a wall integral with the front case 1a. In addition, the left and right widths of the guide recess 43 and the switch knob 42 are set to a width equal to or greater than the width on the basis of the left and right width of the shaving blade 3 to ensure the operability of the switch knob 42.

  If necessary to prevent the switch panel 41 from being bent and deformed, the receiving wall 34 is extended downward, and the receiving wall 34 is in contact with a portion surrounded by the receiving wall 34, the holding wall 75, and the guide recess wall. Providing the rib to be integrated with the front case 1a will further reliably prevent the switch panel 41 from being bent and deformed.

It is a front view of an electric razor. It is a side view of an electric razor. It is an exploded sectional view of an electric razor. It is a vertical front view of an electric razor. It is a vertical side view of an electric razor. It is a vertical side view of a razor head. It is a perspective view which shows the attitude | position switching structure of a sharp razor blade. It is a cross-sectional plan view in the finger rest rib part of an electric razor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body case 1a Front case 2 Main blade 3 Wedge shaving blade 4 Motor 10 Motor holder 38 Upper section chamber 39 Panel recessed part 39s Panel recessed side face 41 Switch panel 42 Switch knob 42s Switch knob knob side face 43 Guide recessed part 44 Stopper part

Claims (3)

A main blade (2) and a motor (4) for driving the main blade (2);
A main body case (1) constituted by two front and rear cases (1a) and (1b), a motor holder (10) clamped and fixed by the front and rear cases (1a) and (1b), and a main body case (1) A switch panel (41) assembled to the front surface of the switch, and a switch knob (42) supported by the switch panel (41) so as to be slidable up and down.
On the front surface of the front case (1a), a left and right wide panel recess (39) for accommodating the switch panel (41) is formed.
The switch panel (41) includes a guide recess (43) that slides and guides the switch knob (42), and a stopper portion (44) that is bulged and formed at the lower portion of the guide recess (43). The front case (1a) is engaged and mounted in a state of fitting into the panel recess (39).
The switch panel (41) and the switch knob (42) engaged with and fitted to the guide recess (43) are received on both side surfaces (39s) of the panel recess (39) so as not to be movable left and right .
A restriction rib (46) protruding rearward is formed on the upper inner surface of the switch panel (41).
In a state where the switch panel (41) is fitted and mounted in the panel recess (39), the regulation rib (46) is sandwiched up and down by the step portion (74) formed in the front case (1a) and the motor holder (10). An electric razor in which the vertical movement of the switch panel (41) is restricted . On the front surface of the front case (1a), an upper compartment (38) that accommodates the horizontally-long horizontal shaving blade (3), and a panel recess (39) having the same width as the upper compartment (38) are vertically adjacent. Formed in a state ,
The interior and bottom of the upper compartment (38) are partitioned by a vertical wall (32) formed in the motor holder (10) and a flange wall (33) continuous to the lower part of the vertical wall (32). ,
The upper ends of the front and rear joint surfaces of the regulation rib (46) and the step portion (74) of the front case (1a) are covered with the flange wall (33), and the regulation rib (46) of the switch panel (41) is The electric razor according to claim 1, wherein the electric razor is vertically sandwiched between the step (74) of (1a) and the flange wall (33) of the motor holder (10) . A lock mechanism is provided between the front case (1a) and the switch knob (42) to lock and hold the switch knob (42) in the off position.
A single-letter finger grip rib (51) bulges toward the center of the plate surface of the switch knob (42), and the lock mechanism is unlocked at the center of the finger grip rib (51) in the width direction. The electric shaver according to claim 2, wherein the button (60) is assembled .

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