JP5820712B2 - Small electrical equipment - Google Patents

Description

  The present invention has a cylindrical case having an opening at the lower end, a battery that is inserted and removed from the opening, and a bottom lid that closes the opening, and a small electric device in which the bottom lid 8 is detachably attached to the case 7 About.

  This type of small electric device is known from Patent Document 1. In this case, a bottom cover is disposed on the bottom opening of the main body case, and a fixed cam provided on the bottom cover is engaged with an engagement groove of the main body case to fix the bottom cover to the main body case. A dial for rotating the fixed cam is provided on the bottom surface of the bottom lid, and the dial and the fixed cam are integrally fixed with screws. By rotating the dial and changing the posture of the fixed cam with respect to the engaging groove, the bottom cover can be attached to and detached from the bottom opening of the main body case, and the battery stored therein can be taken out. A small electric device having a similar bottom cover can also be seen in Patent Document 2.

Japanese Patent Laid-Open No. 2002-177666 (paragraph numbers 0019, 0020, FIG. 1, FIG. 6) Japanese Patent Publication No. 5-38420 (page 2, column 4, lines 17-33, FIG. 4)

  Neither Patent Literature 1 nor 2 has a display unit that displays the loading direction of the battery.

  An object of the present invention is to provide a small electric device that is unlikely to cause an erroneous loading of a battery.

  The small electric device of the present invention has a cylindrical case 7 having an opening 6 at the lower end and a bottom lid 8 that closes the opening 6, and the bottom lid 8 is detachably attached to the case 7. The case 7 includes a case main body 9 and an inner bracket 10 accommodated in the case main body 9, and a battery holder 19 that holds at least one battery 4 is formed in the inner bracket 10. A display unit 110 that displays the insertion direction of the battery 4 is provided at the battery insertion port 19 a of the battery holder 19.

  The display unit 110 is formed integrally with the inner bracket 10, and protrudes toward the opening 6. The display unit 110 is provided on the protrusion 112, and a loading direction display body 113 having a shape imitating the shape of the battery 4. It consists of

  The loading direction indicator 113 is formed integrally with the projecting portion 112 and is formed as a convex or concave pattern.

  The protruding portion 112 is provided with an inclined surface 111 that is inclined toward the opening 6, and the loading direction indicator 113 is integrally formed on the inclined surface 111.

  In the housing of the present invention, the display unit 110 for displaying the insertion direction of the battery 4 is provided in the battery insertion port 19 a of the battery holder 19. According to this, the insertion position and direction of the battery 4 can be clearly displayed. Therefore, as long as the battery 4 is loaded in accordance with the display on the display unit 110, it is possible to reliably prevent an erroneous loading of the battery 4.

  The display unit 110 is configured by a projecting portion 112 that is formed integrally with the inner bracket 10 and projects toward the opening 6, and a loading direction display body 113 that is shaped like the shape of the battery 4. According to the display unit 110, the loading direction display body 113 imitating the shape of the battery 4 can understand the insertion direction of the battery 4 at a glance, so that a wrong loading of the battery 4 can be prevented more reliably. In addition, compared with the case where the display unit 110 is formed as an independent component, the number of components can be reduced, and the trouble of assembling the display unit 110 can be saved.

  When the insertion direction indication of the battery 4 is a printed matter such as a paint or a seal, the direction indication may be peeled off due to deterioration over time and disappear. However, if the loading direction indicator 113 is formed integrally with the protrusion 112 and formed as a convex or concave pattern, the loading direction indicator 113 deteriorates or disappears even when the usage period is long. And the display function of the loading direction indicator 113 can be exhibited in a stable state over a long period of time.

  When the inclined surface 111 inclined to the opening 6 is provided on the projecting portion 112 and the loading direction indicator 113 is integrally formed on the inclined surface 111, the loading direction indicator 113 can be easily viewed when the battery 4 is inserted. Can be oriented. Therefore, the loading direction display body 113 can be easily visually recognized, and the insertion position and direction of the battery 4 can be clearly displayed.

It is a lower longitudinal front view of the electric razor provided with the housing of this invention. It is a front view of an electric razor. It is a vertical front view of an electric razor. It is an upper vertical side view of an electric razor. It is the sectional view on the AA line in FIG. It is an exploded sectional view of a housing. It is a disassembled perspective view of a bottom cover. It is the BB sectional view taken on the line in FIG. It is a bottom view of the state which removed the bottom cover. It is CC sectional view taken on the line in FIG. It is the schematic which shows a feed circuit. It is a partial front view which shows the structure of a switch. It is the schematic which shows the dimensional relationship of a case main body lower part and a cover body. It is a vertical side view which shows another Example of a bottom cover. It is a figure which shows another Example of a terminal board. It is the partial front view and top view which show the modification of a deformation | transformation absorption part.

(Example) FIGS. 1-13 shows the Example of the small electric equipment which has the housing based on this invention, specifically, an electric shaver. In the present invention, front / rear, left / right, and upper / lower follow the cross arrows shown in the figure and the front / rear, left / right, and upper / lower indications shown near each arrow.

  In FIG. 2, the electric razor includes a housing 1, a cutting blade 2 provided at the upper end (one end) of the housing 1, a motor 3 that drives the cutting blade 2, and two batteries 4 that supply electric power to the motor 3. Consists of. A slide knob 5 that activates the motor 3 is disposed at the upper front of the housing 1. As shown in FIGS. 3 and 6, the housing 1 includes a case 7 having an opening 6 at the lower end and a bottom lid 8 disposed so as to close the opening 6. The case 7 includes a cylindrical case main body 9 and an inner bracket 10 accommodated in the case main body 9 (see FIG. 6). The bottom cover 8 is detachably provided on the case 7. By removing the bottom cover 8, the internal battery 4 can be replaced. As shown in FIGS. 3 and 4, a protective cap 100 for protecting the cutting blade 2 when not in use is detachably provided on the upper portion of the housing 1. The battery 4 may be a dry battery or a rechargeable battery.

  As shown in FIGS. 3 and 5, the cutting blade 2 includes an inner blade 12 formed of a slit blade and an outer blade 13 having a mesh blade structure that is held in an arch shape by an outer blade holder 14. The outer blade holder 14 is detachably fitted to the holder base 36 at the top of the housing 1 and is held in a non-removable manner by lock claws 15 provided on both sides of the case body 9.

  As shown in FIGS. 3 and 6, the inner bracket 10 includes an upper wall 17, a motor holder 18 provided at the center lower portion of the upper wall 17 and fixing the motor 3, and a battery holder 19 provided on the left and right of the motor holder 18. And a pair of left and right fastening bosses 20 projecting upward from the left and right ends of the upper wall 17 and a vibrator 21 provided between the pair of fastening bosses 20 are integrally formed. The pair of fastening bosses 20 also serve as fastening seats for fastening screws 42 that fix the case body 9 and the inner bracket 10. Further, the inner bracket 10 is integrally formed with a pair of left and right L-shaped locking portions 22 provided at the lower end of the motor holder 18 and a protrusion 23 protruding downward from the center of the lower end of the motor holder 18. ing. The pair of locking portions 22 are provided with support arms 24 protruding in four locations that define the assembly position of the inner bracket 10 with respect to the case body 9 before and after the pair of locking portions 22 and prevent the case body 9 from inwardly deforming ( (See FIG. 5).

  As shown in FIGS. 3 and 4, the vibrator 21 includes a portal vibration frame 25, a cam groove 26 formed on the lower surface of the vibration frame 25, and a pair of left and right members that are continuously provided from the lower ends on both sides of the vibration frame 25. The vibrating arm 27 and the drive shaft 28 formed on the upper surface of the vibrating frame 25 are configured. The upper end of the vibrating arm 27 is formed integrally with the previous fastening boss 20. The rotational power of the motor 3 is converted into reciprocating power by the eccentric cam 29 and the vibrator 21 provided on the output shaft, and then transmitted to the inner blade 12 via the drive shaft 28. The drive shaft 28 of the vibrator 21 and the inner blade 12 are connected via a float structure that can freely float up and down, and the inner blade 12 is pressed and urged by a float spring 28 a so as to be in close contact with the outer blade 13. .

  As shown in FIGS. 4 to 6, the case body 9 includes a cylindrical wall 31 having an oval cross-sectional shape, front and rear walls 32 and 33 (see FIG. 4) provided at the front and rear of the cylindrical wall 31, A step-like left and right wall 34 connecting the left and right ends of the walls 32 and 33 and an upper wall 35 connecting the front and rear walls 32 and 33 and the upper ends of the left and right walls 34 are made of a plastic molded product integrally formed in a cylindrical shape. The front and rear walls 32 and 33, the left and right walls 34, and the upper wall 35 close the upper opening of the case body 9 to constitute a holder base 36 that supports the outer blade holder 14. Thus, the case body 9 is formed in a cylindrical shape having the upper opening closed and the opening 6 at the lower end. A shaft window 37 for exposing the drive shaft 28 is opened at the center of the upper wall 35, and insertion holes 38 for inserting fastening screws 42 are formed on the left and right sides of the shaft window 37. Lock claws 15 for locking and holding the outer blade holder 14 are provided on the left and right ends of the upper wall 35 in a state of being biased outward by a spring (see FIG. 3).

  The case body 9 and the inner bracket 10 are assembled in the following manner. First, the motor 3 is fixed to the motor holder 18 of the inner bracket 10, and the movable terminal plate 70, the fixed terminal plate 71, and the first terminal plate 72 are assembled to the inner bracket 10. Details of these terminal boards 70 to 72 will be described later. The inner bracket 10 is inserted into the case body 9 from the opening 6 in a state where the terminal plates 70 to 72 are assembled. Next, a seal body 40 is attached between the drive shaft 28 and the shaft window 37 of the vibrator 21 to close the gap between the two 28 and 37, and its peripheral wall is brought into close contact with the upper surface of the peripheral wall of the shaft window 37. An O-ring 41 is disposed in each of the insertion holes 38 for inserting the fastening screws 42, and the lock claws 15 are disposed on the left and right ends of the upper wall. Finally, after the presser plate 43 formed by punching the stainless steel plate is placed on the upper surface of the upper wall 35 of the case body 9, the fastening screw 42 inserted through the screw insertion hole is formed on the fastening boss 20 that also serves as a fastening seat. The inner bracket 10, the case main body 9, and the presser plate 43 are fastened together by screwing into the screw holes 44. At the same time, the peripheral wall of the seal body 40 and the upper surface of the lock claw 15 are clamped by the presser plate 43.

  In the state in which the case main body 9 and the inner bracket 10 are assembled, the vibrator chamber R that houses the vibrator 21 is defined in the upper portion of the case 7. The vibrator chamber R is an internal space sandwiched between the upper wall 17 of the inner bracket 10 and the pair of left and right fastening bosses 20, the upper wall 35 of the case body 9, and the front and rear walls 32 and 33. A vibrator 21 is disposed in the chamber R. As described above, when the vibrator 21 is arranged in the vibrator chamber R, the contact member between the eccentric cam 29 and the vibrator 21, that is, the entire periphery of the generation source of the tapping sound, is each of the members 17, 20, 32, and 33. By covering with 35, sound leakage to the outside can be prevented, and therefore the electric razor can be silenced. Further, since the shaft window 37 and the insertion hole 38 have a gap sealed by the seal body 40 and the O-ring 41, when shaving or washing the electric razor with water, the shavings and water can be removed from the housing 1. Can be prevented from entering.

  As shown in FIG. 9, the lower ends of the left and right battery holders 19 face the opening 6, and serve as a battery insertion opening 19 a for inserting the battery 4 into the battery holder 19. As shown in FIGS. 1, 6, 9, and 10, a display portion 110 is integrally formed with the inner bracket 10 in the insertion port 19 a. Specifically, the display unit 110 is formed by a protruding portion 112 formed at the lower end of the engaging portion 22 and a loading direction display body 113. The protruding portion 112 is formed with an inclined surface 111 inclined downward from the front to the rear so as to face the opening 6, and a loading direction indicator 113 is formed on the inclined surface 111. The loading direction indicator 113 protrudes from the inclined surface 111 in a shape simulating the external shape of the battery 4 and has a convex pattern.

  As described above, the case 7 includes the case main body 9 and the inner bracket 10, and the vibrator 21, the locking portion 22, the protrusion 23, and the like are formed integrally with the inner bracket 10, thereby reducing the number of parts, The trouble of assembling the parts can be saved remarkably. Further, the fact that the fastening boss 20 also serves as a fastening seat for fastening the fastening screw 42 serves to reduce the number of parts and the labor of assembling each part, thereby reducing the manufacturing cost of the electric shaver as a whole. In addition, the fastening screw 42 can firmly integrate the case body 9, the inner bracket 10, and the vibrator 21. Further, since the vibrator 21 is provided integrally with the fastening boss 20 fastened by the fastening screw 42, vibration of the vibrator 21 can be well prevented from being generated to generate chatter noise, and the electric razor can be silenced. Can be

  A display unit 110 that displays the insertion direction of the battery 4 is provided in the battery insertion opening 19 a of the pair of left and right battery holders 19. The display unit 110 includes a projecting portion 112 projecting toward the opening 6 and a loading direction display body 113 having a shape imitating the shape of the battery 4. In this manner, when the display unit 110 is provided, the insertion direction of the battery 4 can be understood at a glance, so that the insertion position and direction of the battery 4 can be clearly displayed. Moreover, since the display part 110 was integrally formed with the inner bracket 10, the number of parts can be reduced compared with the case where the display part 110 is formed as an independent part. Moreover, the trouble of assembling the display unit 110 can be saved. Further, since the loading direction indicator 113 is formed integrally with the protruding portion 112 and formed as a convex pattern, the loading period is different from the case where the loading direction indication is a printed matter or a printed matter such as a sticker. Even in this case, the loading direction display 113 can be prevented from deteriorating or disappearing. Therefore, the display function of the loading direction indicator 113 can be exhibited in a stable state over a long period of time. It is also possible to determine the loading direction of the battery 4 by touching the loading direction display 113 with a fingertip. In addition, since the inclined surface 111 that faces the opening 6 and descends downward from the front to the rear is provided, the loading direction indicator 113 can be oriented in an easy-to-see direction, and the insertion position and direction of the battery 4 are further clarified. Can be The protruding portion 112 is integrally protruded further downward from the locking portion 22 that is integrally protruded downward from the inner bracket 10. The battery holder 19 is not limited to a structure in which a pair of left and right is provided, but may be a case 7 in which one battery is provided on either the left or right side and accommodates one battery. Further, the case 7 may be a case 7 in which two battery holders 19 are provided on either one of the left and right sides to accommodate two batteries 4. Furthermore, it may be a case 7 in which two battery holders 19 are provided on both the left and right sides to accommodate four batteries 4.

  As shown in FIGS. 1 and 7, the bottom lid 8 includes a lid body 46, an operation knob 47 that is rotatably provided on the lid body 46, and a lock body 48 that is coupled to the operation knob 47. Further, a terminal plate (second terminal plate) 73 constituting a power feeding circuit for supplying electric power to the motor 3 is disposed on the bottom cover 8. Details of the second terminal board 73 will be described later. The operation knob 47 is made of a plastic molded product in which a knob body 50 and a connecting shaft 51 that protrudes upward from the knob body 50 are integrally formed. The connecting shaft 51 connects the pair of elastic arms 52 divided by the slits 52a that bisect in the radial direction, the engaging claws 53 formed to protrude from the upper ends of the elastic arms 52, the elastic arms 52, and the knob body 50. It is composed of a stepped base shaft portion 51. The elastic arms 52 are not limited to the pair of elastic arms 52 in which the connecting shaft 51 is divided by the slits 52a, but may be configured as three or more elastic arms 52 that are radially expandable / contractible. The knob main body 50 is formed in substantially the same shape as the cross-sectional shape of the cylindrical wall 31 of the case main body 9 in plan view, and the pair of elastic arms 52 has a non-circular cross-section in which the cross-sectional outline shape has a flat portion. ing. In the vicinity of the left and right sides of the base shaft portion 51, a restriction protrusion 55 is provided facing upward, which is inserted into a restriction groove 61 of the lid body 46 to be described later and defines the rotation limit of the operation knob 47.

  As shown in FIG. 1 and FIG. 7, the lid body 46 is made of a plastic molded product in which a flange portion 58 is formed in a protruding manner on the periphery of the lower end of the lid body 57. A stepped shaft hole 59 is formed in the lid body 57 so as to penetrate vertically. A ring-shaped seal ring 60 is fitted and attached to the periphery of the lid main body 57, and a partial arc-shaped regulation groove 61 into which the previous regulation projection 55 is inserted is formed at two locations on the bottom surface of the lid main body 57. Is formed. In addition, on the upper surface of the lid 46, a pair of regulation walls 62 that prevent the rotation of the second terminal plate are provided in pairs (see FIG. 8). Due to the restricting projection 55 and the restricting groove 61, the operation knob 47 and the lid body 46 have a lock position where the longitudinal direction of the lid body 46 and the longitudinal direction of the operation knob 47 coincide with each other, the longitudinal direction of the lid body 46 and the operation knob. It is assembled so that it can be rotated 90 degrees between the unlocked position and the longitudinal direction of 47.

  As shown in FIGS. 7 and 8, on the case inner surface side of the bottom cover 8, a rod-shaped cleaning body 115 is provided for cleaning the hair adhering to the periphery of the cutting blade 2 or the periphery of the slide knob 5. is there. The cleaning body 115 is accommodated in the housing 1 in a state where the bottom lid 8 is attached to the case 7 (see FIG. 5). The cleaning body 115 is formed by a round shaft-shaped brush main body 116 and a brush portion 117 implanted in the brush main body 116. Four reinforcing ribs 118 for increasing the strength of the lid 46 are formed on the case inner surface side of the lid 46. The four reinforcing ribs 118 also serve as a mounting portion 119 for mounting the cleaning body 115. Specifically, as shown in FIG. 5, a U-shaped reinforcing rib 118 that receives the shaft end of the brush body 116, a pair of front and rear reinforcing ribs 118 that hold the middle part of the brush body 116, and the vicinity of the brush part 117. A mounting portion 119 is constituted by the provided reinforcing rib 118. In the present embodiment, the mounting portion 119 is configured by the reinforcing rib. However, a concave portion may be formed in the lid body 46, and the concave portion may be used as the mounting portion 119.

  The cleaning body 115 is detachably mounted on the mounting portion 119 so that the longitudinal direction of the lid body 46 coincides with the longitudinal direction of the cleaning body 115, that is, the axial center direction of the brush shaft 116. Specifically, as shown in FIG. 8, claws facing each other are formed at the protruding ends of the two reinforcing ribs 118 located at the center of the left and right sides, and the brush body 116 is engaged and held by these claws. ing. The U-shaped reinforcing rib 118 regulates the position of the cleaning body 115 in the left direction so that the cleaning body 115 can be held at an appropriate position. The right reinforcing rib 118 regulates the spread of the brush portion 117, and prevents the brush portion 117 from being sandwiched between the periphery of the opening 6 and the bottom lid 8 when the bottom lid 8 is attached to the case 7. It is preventing.

  As shown in FIG. 1 and FIG. 7, the lock body 48 is a plastic molded product in which a cylindrical connecting boss 63 and a locking body 64 that is formed so as to protrude from the upper position of the connecting boss 63 are integrally formed. Consists of. A step portion 65 and a mounting hole 66 are formed in the locking body 64 and the connection boss 63 so as to penetrate the lock body 48 in the vertical direction. The mounting hole 66 has a cross-sectional shape that matches the outer cross-sectional shape of the pair of elastic arms 52. With the connection boss 63 of the lock body 48 engaged with the connection shaft 51, The lock body 48 is coupled to be able to rotate together. Further, the mounting hole 66 is connected in a state where the locking body 64 of the lock body 48 is oriented in the same direction as the longitudinal direction of the operation knob 47 when the operation knob 47 and the lock body 48 are connected. Is formed. Further, on the outer peripheral surface of the connecting boss 63, a groove-shaped holding portion 67 that forms a moderation structure that holds the operation knob 47 with respect to the lid 46 together with the holding arm 96 provided on the second terminal plate 73 is equiangular. It is provided at four places at intervals. In addition, a circumferential rib 69 is formed on the peripheral edge of the lower end of the connecting boss 63 so as to face the case inner surface side of the lid 46 and the rib 69 when the lock body 48 is engaged with the connecting shaft 51. The second terminal board 73 is nipped and fixed. The rib 69 may be formed in an intermittent partial arc shape. The pinching and fixing described above may be fixed to such an extent that it can be prevented from being lifted, and there is no problem even if a slight gap exists between the case inner surface side of the lid 46 and the rib 69.

  The lid 46, the operation knob 47, and the lock body 48 are assembled in the following manner. First, the elastic arm 52 and the shaft portion 51 are inserted into the shaft hole 59 of the lid body 46 with the seal ring 68 attached to the proximal end portion of the shaft portion 51 of the operation knob 47. Next, the insertion hole 97 of the second terminal plate 73 is inserted into the elastic arm 52 and the shaft portion 51 from above. Further, the operation arm 47 and the lock body 48 are separated by inserting the elastic arm 52 into the mounting hole 66 of the lock body 48 and engaging the engaging claw 53 of the elastic arm 52 with the step portion 65 of the mounting hole 66. Link impossible. Thus, the lid 46 and the operation knob 47 are configured so that the locking body 64 is oriented in a direction that coincides with the longitudinal direction of the lid body 46 by rotating the operation knob 47, and the locking body. It is possible to switch to an unlocking posture in which 64 is oriented in a direction orthogonal to the longitudinal direction of the lid 46. In addition, the second terminal plate 73 is sandwiched and fixed around the insertion hole 97 by the annular rib 69 and the lid body 46 in a state where the lock body 48 is coupled to the coupling shaft 51. The vertical movement can be restricted. The seal ring 60 may be attached at any time, for example, when the three members are assembled or after the assembly.

  When the bottom lid 8 is attached to the case 7, as shown in FIG. 8, the operation knob 47 is rotated to the unlock position in the counterclockwise direction, and the longitudinal direction between the operation knob 47 and the lid body 46. Are orthogonal. In this state, the locking body 64 of the lock body 48 is oriented in a direction orthogonal to the longitudinal direction of the lid body 46. Next, the lid body 46 is inserted into the opening 6 of the case body 9 until the flange portion 58 comes into contact with the lower peripheral edge of the case body 9. Finally, the operation knob 47 is rotated 90 degrees clockwise in FIG. 8 to bring the lock body 48 into the locked position, whereby the lock body 64 of the lock body 48 is locked to the inner bracket 10. The bottom cover 8 is attached to the case 7 while being locked to the portion 22. At this time, there is no gap between the flange portion 58 and the lower peripheral edge of the case body 9 and between the locking body 64 and the locking portion 22, and the bottom lid 8 is not rattled against the case 7. Can be fixed. When the bottom cover 8 is removed, the operation knob 47 can be turned from the state shown in FIG. 5 in the counterclockwise direction to switch the lock body 48 to the unlocked position, so that it can be removed from the opening 6. Thereby, the battery 4 arranged in the housing 1 can be replaced or removed and charged. Note that the control knob 47 is turned 90 degrees clockwise from the state shown in FIG. 5 to the unlocked state, and the unlocked state is turned 90 degrees counterclockwise from the unlocked state. The protrusion 55 and the restriction groove 61 may be arranged. When the bottom lid 8 is removed from the opening 6, that is, when the operation knob 47 is unlocked, the longitudinal direction of the operation knob 47 is orthogonal to the longitudinal direction of the lid body 46. The cleaning body 115 in this state is protected by the connecting shaft 51, the longitudinal end portion of the operation knob 47, and the locking body 64 of the lock body 48 (see FIG. 8), and the cleaning body 115 is touched by fingers and the like. Can be prevented from being accidentally removed. As shown in FIG. 8, in the cleaning body 115, the locking body 64 covers a part above the cleaning body 115 in a state where the operation knob 47 is unlocked.

  As shown in FIG. 1, in a state where the bottom cover 8 is attached to the case 7, the connecting shaft 51 faces the case 7, and the protrusion 23 provided on the inner bracket 10 is inserted between the two elastic arms 52. Thus, the elastic arm 52 is prevented from being deformed inward. Therefore, even when a drop impact is applied to the bottom lid 8, it is possible to prevent the elastic arm 52 from being deformed and the engagement claw 53 from being detached from the step portion 65. Therefore, the mounting state of the bottom lid 8 with respect to the case 7 can be maintained and the internal parts such as the battery accommodated in the housing 1 can be reliably prevented from falling off. In addition, since the gap is sealed between the case 7 and the lid 46 and between the lid 46 and the operation knob 47 by the seal ring 60 and the seal ring 68, when shaving or using an electric razor When washing and washing with water, it is possible to prevent fluff and water from entering the housing 1. The connection shaft 51 facing the case 7 includes a structure in which the connection shaft 51 directly faces the case 7 and a structure in which the connection shaft 51 faces indirectly through the lock body 48. The structure in which the connecting shaft 51 directly faces the case 7 corresponds to a structure in which the connecting shaft 51 and the lock body 48 are integrally formed, and a structure in which only the locking body 64 is formed separately.

  According to the configuration of the bottom lid 8 as described above, the operation knob 47, the lock body 48, and the second terminal can be obtained simply by inserting the elastic arm 52 into the mounting hole 66 and engaging the engaging claw 53 with the step portion 65. The operation knob 47 and the lock body 48 can be assembled so that they can rotate together with the plate 73 in an axially inseparable manner. Therefore, it is not necessary to fasten with screws at the time of assembly as in the prior art, and the bottom lid 8 can be assembled easily and reliably with less effort. Further, since no screw is used, the number of parts can be reduced, and there is an advantage that the manufacturing cost of the housing can be reduced. Furthermore, there is no operation failure due to loosening of the screw, and the bottom cover 8 can be always attached and detached accurately. In addition, since the stepped portion 65 is continuously formed at the upper end of the mounting hole 66, it can be easily confirmed visually whether the engaging claw 53 is engaged with the stepped portion 65, and the bottom lid 8 can be surely secured. Can be assembled into. The lid body 46 of the bottom lid 8 may be configured to cover the entire outer surface of the case body 9. There are various conceivable structures for detachably attaching the bottom lid 8 to the case 7 such as a structure in which a claw is provided on the bottom lid 8 and engaged with the opening 6 of the case 7.

  When the cleaning body 115 is detachably mounted on the case inner surface side of the bottom lid 8, the cleaning body 115 can be accommodated in the housing. It is not necessary to carry the cleaning body 115, and the cleaning body 115 can easily perform cleaning. Further, the cleaning body 115 can be prevented from being lost or damaged. Furthermore, since the cleaning body 115 is not exposed to the outer surface, a simple appearance design can be achieved. Since the cleaning body 115 is detachably mounted on the mounting portion 119 configured using the reinforcing rib 118 that reinforces the lid body 46, it is not necessary to separately provide the mounting portion 119, and the manufacturing cost of the housing can be reduced. it can. In addition, since the cleaning body 115 formed in a rod shape is mounted on the mounting portion 119 in a state along the longitudinal direction of the lid body 46, the long cleaning body 115 is provided within the range of the lateral dimension of the lid body 46. Can do. The long cleaning body 115 is easier to operate with fingers than the short cleaning body, but requires a large space for its storage. However, by accommodating the cleaning body 115 in a state along the longitudinal direction of the lid body 46, the cleaning body 115 that is easy to handle can be suitably accommodated using the space on the inner surface of the lid body 46.

  As shown in FIGS. 6 and 11, a power supply circuit for supplying electric power from the battery 4 to the motor 3 is housed in the housing 1. The power feeding circuit includes a movable terminal plate 70, a fixed terminal plate 71, a first terminal plate 72, and a terminal plate (second terminal plate) 73. The movable terminal plate 70, the fixed terminal plate 71, and the first terminal plate 72 are assembled to the inner bracket 10, and the second terminal plate 73 is assembled to the lid body 46. Each terminal board 70-73 is formed with the stainless steel board material.

  As shown in FIGS. 4, 11, and 12, a switch 74 for turning on and off the power feeding circuit is provided between the housing 1 and the power feeding circuit. The switch 74 includes a movable side terminal 75 and a fixed side terminal 76 that are vertically opposed to each other, and a switching mechanism that operates the movable side terminal 75 to and from the fixed side terminal 76. The movable terminal 75 is provided at one end of the movable terminal plate 70, and the other end is connected to the positive electrode that is the upper end electrode of the left battery 4. The fixed terminal 76 is provided at one end of the fixed terminal plate 71, and the other end is connected to the positive terminal of the motor 3. The movable side terminal 75 and the fixed side terminal 76 are arranged in the vibrator chamber R in which the vibrator 21 is arranged in a state where both terminals 75 and 76 are positioned up and down. One end of the first terminal plate 72 is connected to the negative electrode that is the upper end electrode of the right battery 4, and the other end is connected to the negative electrode terminal of the motor 3. The left and right ends of the second terminal plate 73 are respectively connected to the negative electrode and the positive electrode, which are the lower end electrodes of the left and right batteries 4. Thus, the batteries 4 are connected in series, and the electric power of the batteries 4 can be supplied to the motor 3 by the contact and separation of the movable terminal 75 and the fixed terminal 76.

  7 and 11, the terminal plate (second terminal plate) 73 includes a main lead portion 94, end lead portions 94a provided on the left and right ends of the main lead portion 94, and end lead portions 94a. A spring contact (contact point) 95 having a cross-sectional shape rising from the rear of the end portion and a plate-shaped moderation piece 96 rising upward from the front and rear of the central portion of the main lead portion 94 are integrally formed by bending. An insertion hole 97 through which the connecting shaft 51 of the operation knob 47 is inserted is formed in the center of the main lead portion 94 between the pair of moderation pieces 96. That is, a pair of moderation pieces 96 are provided around the insertion hole 97. On the lead portion (plate surface) between the moderation piece 96 and the spring contact 95, a step-like deformation absorbing portion 99 formed by two bent portions is provided. Although the number of steps of the step-like deformation absorbing portion 99 of this embodiment is two, four bending portions may be formed to form a three-step step-shaped deformation absorbing portion 99, or there may be more steps. Also good. A pair of deformation absorbing portions 99 are provided on the left and right. As shown in FIG. 7, a deformation absorbing portion 99 is formed in a step shape on the lead portion (plate surface) between the moderation piece 96 and the spring contact 95, and the lead portion ( The plate surface is separated into a main lead portion 94 and an end lead portion 94a. The insertion hole 97 is not necessarily circular as in the present embodiment, and may be oval or square. Further, the insertion hole 97 does not need to be a complete circle as in this embodiment, and may be an incomplete circle. That is, the main lead portion 94 constituting the insertion hole 97 may be partially cut away.

  As described above, the deformation absorbing portion 99 is formed in a step shape. The terminal board 73 includes a main lead portion 94 where the moderation piece 96 rises and an end lead portion 94a where the contact point 95 rises. The main lead portion 94 and the end lead portion 94a are formed by a step-shaped deformation absorbing portion 99. The end lead portion 94 a is located below the main lead portion 94. Further, the vertical dimension h2 of the contact point 95 in the free state rising from the end lead part 94a is set larger than the vertical dimension h1 of the step of the step-shaped deformation absorbing part 99. Each battery 4 can be pressed against the upper terminal by the spring contact 95 rising from the left and right end lead portions 94a, and the power feeding circuit can be reliably connected. Further, the vertical dimension of the contact point 95 rising from the end lead part 94a in the accommodated state of the battery 4 is set to be the same as or slightly larger than the vertical dimension h1 of the step of the step-like deformation absorbing part 99. According to this, the contact 4 can be deformed while maintaining an elastic restoring force, and even if a strong impact force is generated, the contact 4 is not plastically deformed, and contact pressure is applied to the battery terminal over time. Can do.

  The moderation piece 96 is formed by a holding arm 96a and a partial spherical holding protrusion 98 formed at the upper end of the holding arm 96a. The holding arm 96a is formed to be wide on the base end side rising from the main lead portion 94 and narrower on the free end side to ensure strength. The straight line connecting the pair of moderation pieces 96 is orthogonal to the straight line connecting the pair of contact points 95. In this embodiment, the pair of contacts 95 and the insertion port 97 are arranged so that the straight line connecting the pair of contacts 95 passes through the center of the insertion hole 97 so that the straight line connecting the pair of contacts 95 crosses the insertion hole 97. ing. The moderation piece 96 is provided around the insertion hole 97 on a straight line that intersects with a straight line connecting the pair of contact points 95. Specifically, as shown in FIGS. 5 and 8, the moderation piece 96 is provided at an opposing position around the insertion hole 97, and a straight line connecting the pair of contact points 95 and a straight line connecting the pair of moderation pieces 96 are mutually connected. A straight line that is orthogonal and connects the pair of moderation pieces 96 passes through the center of the insertion hole 97. In addition, the part which becomes a reference | standard which connects a straight line is the part which engages with the holding | maintenance part 67 in the moderation piece 96, ie, holding protrusion 98, and the part which contacts the contact of the battery 4 in the contact 95, ie, contact part. 95a, which is the central part.

  The groove-shaped holding portion 67 and the moderation piece 96 provided in the lock body 48 described above constitute a moderation structure of the operation knob 47. In the moderation structure, the holding protrusion 98 provided on the moderation piece 96 is engaged with the holding portion 67, whereby the operation knob 47 can be held at the locked position and the unlocked position with respect to the lid body 46. (See FIG. 8). When the locking position is in the locked position, the locking body 64 and the locking portion 22 of the locking body 48 are in close contact with each other. Therefore, the position holding when the operation knob 47 is switched to the locked position, that is, the moderation structure can be omitted. it can. That is, a moderation structure in which the moderation piece 96 and the holding portion 67 are arranged so that the position can be held only in the unlocked posture can be obtained. The moderation piece 96 is not limited to a pair, and may be one or three or more.

  According to the second terminal plate 73 as described above, when the battery 4 is connected to the contact 95, the elastic deformation generated at the contact 95 and the elastic deformation generated at the moderation piece 96 when operating the moderation structure. It is possible to prevent the deformation of the main lead portion 94 caused by the deformation such as the bending by the deformation absorbing portion 99 and prevent the elastic deformation from affecting one side to the other side. Accordingly, each elastic force can be maintained in a proper state set in advance. Further, since the lock body 48 is sandwiched between the pair of moderation pieces 96, a moderation structure in which a firm sense of moderation can be obtained.

  The switching mechanism of the switch 74 includes a slide knob 5 that is reciprocated to the left and right along the outer surface of the case body 9, an eccentric cam 78 that converts the reciprocating operation of the slide knob 5 into a rotating operation, and the eccentric cam 78 that rotates together. The operation shaft 83 is configured to switch the contact / separation state of the movable terminal 75. The slide knob 5 is made of a plastic molded product, and a long hole-like operation groove 79 for operating the eccentric cam 78 is formed in the rear surface, and four engaging claws 81 project from the upper side and the lower side. Is formed. By engaging these engaging claws 81 with the guide grooves 80 formed in the case body 9, the slide knob 5 can slide left and right along the guide grooves 80. The slide knob 5 is disposed on the outer surface of the front wall 32 of the case body 9 so as to cover the outer surface of the eccentric cam 78. As shown in FIG. 2, a state where the slide knob 5 is located at the left end is a position where the power feeding circuit is turned off, and a state where the slide knob 5 is located at the right end is a position where the power feeding circuit is turned on.

  As shown in FIG. 12, the eccentric cam 78 is operated by a disk-shaped cam base 82, an operation shaft 83 having an operation portion that is formed to protrude from the rear surface of the cam base 82, and an operation groove 79 of the slide knob 5. It consists of the plastic molding which integrally formed the operation protrusion 84 and the moderation body 85 formed in the ring shape which can be elastically deformed. The operation shaft 83 is provided with a flat surface 86 to form an operation portion having a half-moon shaped cross section. A partial arc-shaped moderation protrusion 88 projects from the front wall 32 of the case body 9 so as to overlap the movement locus of the moderation body 85. The moderation structure includes a moderation body 85 and moderation protrusions 88.

  The slide knob 5 and the eccentric cam 78 are assembled in the following manner. First, the operation shaft 83 fitted with the O-ring 90 is inserted into the insertion hole 89 formed in the front wall 32 of the case body 9 so that the flat surface 86 of the operation portion contacts the operation piece 92 of the movable terminal 75. To do. Thereafter, the engaging claw 81 is fitted into the guide groove 80 at a position where the operation groove 79 of the slide knob 5 and the operation projection 84 of the eccentric cam 78 are engaged. Thus, the slide knob 5 is assembled at the left end position where the power feeding circuit is turned off, and is held in the moderation structure described above. Further, since the insertion hole 89 has a gap sealed by an O-ring 90, it is possible to prevent hairs and water from entering the housing 1 when shaving or washing the electric razor with water.

  When the slide knob 5 is slid rightward, the operation protrusion 84 is operated by the operation groove 79, and the eccentric cam 78 rotates clockwise. At this time, the eccentric cam 78 rotates while the moderator 85 is elastically deformed and gets over the moderation protrusion 88. When the slide knob 5 is slid to the right end, the eccentric cam 78 rotates about 90 degrees clockwise, and the flat surface 86 of the operation shaft 83 is inclined (see FIG. 11). When the flat surface 86 is inclined, the operation piece 92 of the movable side terminal 75 is pushed downward, and the movable side terminal 75 and the fixed side terminal 76 come into contact with each other. Thereby, the electric power of the battery 4 is supplied to the motor 3, and the motor 3 rotates. The rotation of the motor 3 is converted into reciprocating power by the eccentric cam 29 and the vibrator 21, and the power is transmitted to the inner blade 12 connected to the drive shaft 28 of the vibrator 21.

  When the electric razor is not used, the outer cap holder 14 and the outer surface of the slide knob 5 can be covered by attaching the protective cap 100 to the holder base 36 (see FIG. 4). When the slide knob 5 is covered with the protective cap 100 that protects the outer blade 13 in this way, for example, when the electric razor is carried in a state of being housed in a bag or the like, the slide knob 5 collides with another object to turn on. Can be surely prevented.

  As described above, when the movable side terminal 75 and the fixed side terminal 76 constituting the switch 74 are arranged in the vibrator chamber R partitioned by the wall, the contact portion between the terminals 75 and 76 is caused by the vibration of the vibrator 21. Relative sliding is possible. Therefore, it is possible to prevent the formation of an oxide film serving as an electric resistance at the contact portion between both terminals 75 and 76. In addition, even when an oxide film is formed after being unused for a long period of time, the oxide film can be peeled off by microvibration, so that the reliability of the electric shaver can be improved. Further, the air flow in the vibrator chamber R accompanying the reciprocating drive of the vibrator 21 can blow off dust and the like adhering to the terminals 75 and 76 to optimize the contact state of the terminals 75 and 76.

  When the slide knob 5 is disposed on the front wall 32 of the case body 9 that partitions the transducer chamber R, noise on the side facing the human body can be double-shielded by the case body 9 and the slide knob 5 during use. The razor can be silenced. When the slide knob 5 is slid left and right and the movable side and fixed side terminals 75 and 76 are contacted and separated via the eccentric cam 78, the housing 1 is gripped along the slide direction of the slide knob 5. The finger can prevent the slide knob 5 from being erroneously operated during use.

  If the moderation structure is constituted by the annular moderation body 85 provided on the eccentric cam 78 and the moderation protrusion 88 provided on the case body 9, the moderation structure can be simplified. In addition, when the moderation body 85 is formed in an annular shape, the moderation function can be exhibited accurately at both ends of the moderation protrusion 88 by exerting a large elastic force in a small space as compared with the moderation body formed in a cantilever shape.

  The dimensional relationship among the case 7, the lid 46, and the operation knob 47 is set as shown in FIG. When the bottom lid 8 is attached to the opening 6 of the case 7 with a lock structure, the outer dimension (V) defined at both ends of the lid 46 is equal to the outer dimension (W) defined at both ends of the operation knob 47. ) Can be used. As described above, when the outer dimension (V) of the lid 46 is set to be smaller than the outer dimension (W) of the operation knob 47 (V <W), when operating the operation knob 47, both fingers are used. 46 and 47 are not grasped at the same time, and only the operation knob 47 can be securely grasped and rotated. Therefore, it is possible to make the bottom cover 8 easy to perform the turning operation of the operation knob 47 and having good operability.

  Further, it is possible to adopt a form in which the outer dimension (V) defined at both side ends of the lid 46 is set smaller than the outer dimension (X) defined at both side ends of the case 7. Thus, when the outer dimension (V) of the lid body 46 is set smaller than the outer dimension (X) of the case 7 (V <X), the lid body 46 is located inside the operation knob 47 and the case 7. Therefore, for example, it is possible to prevent a direct impact from being applied to the lid body 46 due to dropping, and to prevent the lid body 46 from being damaged. Therefore, it is possible to prevent scattering of interior parts such as a battery housed in the housing.

  Further, the operation knob 47 includes a knob body 50, and the vertical dimension (Y) of the knob body 50 is set to be larger than the gap dimension (Z) defined by the lower end surface of the case 7 and the upper end surface of the knob body 50. Can take the form. Thus, if the vertical dimension (Y) of the knob body 50 is set larger than the gap dimension (Z) between the case 7 and the knob body 50 (Y> Z), the presence of the lid 46 is not shown. It can be a simple exterior design. The housing 1 has an oval shape in plan view, and satisfies the above dimensional relationship at any position on a vertical plane passing through the center thereof.

The housing having the above configuration can be implemented in the following manner.
The housing has a cylindrical case 7 having an opening 6 at the lower end, a battery 4 that is taken in and out of the opening 6 and accommodated in the case 7, and a bottom cover 8 that closes the opening 6, and the bottom cover 8 is a case. 7 and detachably attached to the case 7 through a lock structure provided between the bottom lid 8 and the bottom lid 8. The bottom lid 8 includes a lid 46 that closes the opening 6 and an operation knob 47 that is rotatably supported by the lid 46. The operation knob 47 includes a connecting shaft 51 that passes through the lid 46 and faces the case 7. The lock structure includes a lock body 48 connected to the connection shaft 51 of the operation knob 47, and a locking portion 22 provided on the case 7 side to which the lock body 48 is engaged and disengaged. The operation knob 47 and the lock body 48 are connected via a connecting shaft 51 so as to be able to rotate together in a state where they are engaged so as not to be relatively rotatable. In a state where the lid 46 closes the opening 6, the lock body 48 can be rotated with the operation knob 47 so that the lock body 48 can be engaged with and disengaged from the locking portion 22.
According to this configuration, the bottom cover 8 is configured so that the operation knob 47 and the lock body 48 can rotate together only by connecting the lock body 48 to the connection shaft 51 of the operation knob 47. According to such a bottom cover 8, it is not necessary to fasten with screws at the time of assembly as in the conventional case, and the bottom cover 8 can be assembled easily and reliably with less effort. Further, since no screw is used, the number of parts can be reduced, and there is an advantage that the manufacturing cost of the housing can be reduced. Furthermore, there is no operation failure due to loosening of the screw, and the bottom cover 8 can be always attached and detached accurately. In addition, with the lid 46 closing the opening 6, the lock body 48 is rotated with the operation knob 47 to engage and disengage with the locking portion 22, so that the bottom lid 8 can be attached to the case 7 with a simpler operation. Detachable.

The connection shaft 51 of the operation knob 47 is formed of an elastic shaft that can be expanded and contracted in the radial direction, and an engaging claw 53 is projected from the upper end thereof. The lock body 48 includes a connection boss 63, a mounting hole 66 penetrating the connection boss 63 in the vertical direction, a locking body 64 projecting above the connection boss 63, and a locking body continuously from the upper end of the mounting hole 66. 64 and a stepped portion 65 formed inside. In a state where the connecting shaft 51 of the operation knob 47 is inserted into the mounting hole 66 of the lock body 48, the engagement claw 53 engages with the step portion 65, and the operation knob 47 and the lock body 48 are separated in the axial direction. Link impossible.
According to this configuration, the operation knob 47 and the lock body 48 can be connected to each other in such a manner that the operation knob 47 and the lock body 48 cannot be separated in the axial direction simply by inserting the connection shaft 51 into the mounting hole 66. While simplifying, the labor of assembly can be saved.

The connecting shaft 51 of the operation knob 47 includes at least two elastic arms 52 that can expand and contract the coaxial 51 in the radial direction, and the engaging claws 53 project outwardly from the upper ends of the elastic arms 52. At the upper end of the connecting boss 63 of the lock body 48, a locking body 64 that engages and disengages with the locking portion 22 is provided. A downward projection 23 provided on the case 7 side is positioned at the upper ends of both elastic arms 52 and restricts deformation of the elastic arms 52 in the diameter reducing direction.
According to the above configuration, when the deformation of the elastic arm 52 in the reduced diameter direction is restricted by the downward projection 23 provided on the case 7 side, the elastic arm 52 is deformed even when a drop impact is applied to the bottom lid 8. The engagement claw 53 can be prevented from coming off from the step portion 65. Therefore, the mounting state of the bottom lid 8 with respect to the case 7 can be maintained and the internal parts such as the battery accommodated in the housing 1 can be reliably prevented from falling off.

The case 7 includes a case main body 9 and an inner bracket 10 housed in the case main body 9 and assembled with interior parts. A locking portion 22 having a lock structure and a protrusion 23 for restricting deformation of the elastic arm 52 in the reduced diameter direction are formed on the inner bracket 10.
According to the said structure, compared with the case where the latching | locking part 22 and the protrusion 23 are formed as an independent component, a number of parts can be reduced. Moreover, the trouble of assembling the locking part 22 and the protrusion 23 can be saved.

The housing has a cylindrical case 7 having an opening 6 at the lower end, a battery 4 that is taken in and out of the opening 6 and accommodated in the case 7, and a bottom lid 8 that closes the opening 6. The case 7 is detachably attached to the case 7 through a lock structure provided between the case 7 and the bottom lid 8. The bottom lid 8 includes a lid 46 that closes the opening 6, an operation knob 47 that is rotatably supported by the lid 46, and a metal terminal plate 73 that constitutes a power feeding circuit. The lock structure includes a lock body 48 that is rotatably connected to the connection shaft 51 of the operation knob 47, a locking portion 22 that is provided on the case 7 side and engages and disengages the lock body 48, and the lock body 48 is locked. And a moderation structure capable of holding the position at each position in the unlocked state. The moderation structure includes a plate-shaped moderation piece 96 provided integrally with the terminal plate 73, and a holding portion 67 provided on the lock body 48 or the connecting shaft 51, to which the moderation piece 96 is engaged and disengaged. The terminal plate 73 is provided with an elastically deformable contact point 95 for the battery 4 and an elastically deformable moderation piece 96 for moderation. A deformation absorbing portion 99 is provided in a lead portion (plate surface) between the contact point 95 and the moderation piece 96.
According to the above configuration, since the moderation piece 96 is provided on the terminal plate 73, it is not necessary to prepare the moderation piece 96 separately, and the cost can be reduced. Moreover, since the length of the moderation piece 96 can be increased, a clear operational feeling can be obtained when the position is maintained. Furthermore, since the moderation piece 96 is made of a plate material, a clearer operational feeling can be obtained. When the moderation piece 96 is made of metal, an even clearer operational feeling can be obtained. On the other hand, it is possible to prevent the elastic deformation that has occurred on the lead portion (plate surface) from affecting the other and changing the elastic force set for each. Specifically, when the battery 4 is connected to the contact 95, elastic deformation occurs in the contact 95, and when the moderation structure is operated, elastic deformation occurs in the moderation piece 96, and the influence of these elastic deformations is The contact 95 and the terminal plate 73 around the moderation piece 96 are also extended. Therefore, when the contact point 95 and the moderation piece 96 are elastically deformed, the elastic force of the contact point 95 or the moderation piece 96 is changed, which may cause a contact failure of the contact point 95 or a malfunction of the moderation structure. However, if the deformation absorbing portion 99 is provided in the lead portion (plate surface) between the contact point 95 and the moderation piece 96, the deformation absorbing portion 99 blocks the deformation generated in the terminal plate 73 due to one elastic deformation. Thus, it is possible to prevent the elastic deformation from affecting the other. Therefore, the elastic force of the contact point 95 and the moderation piece 96 can be maintained in an appropriate state. Accordingly, the power supply circuit can be configured without causing contact failure between the contact point 95 and the battery 4. Moreover, the moderation structure can exhibit the moderation function accurately.

The housing has a cylindrical case 7 having an opening 6 at the lower end, a battery 4 that is taken in and out of the opening 6 and accommodated in the case 7, and a bottom lid 8 that closes the opening 6. The case 7 is detachably attached to the case 7 through a lock structure provided between the case 7 and the bottom lid 8. The bottom lid 8 includes a lid 46 that closes the opening 6, an operation knob 47 that is rotatably supported by the lid 46, and a metal terminal plate 73 that constitutes a power feeding circuit. The lock structure includes a lock body 48 that is rotatably connected to the connection shaft 51 of the operation knob 47, a locking portion 22 that is provided on the case 7 side and engages and disengages the lock body 48, and the lock body 48 is locked. And a moderation structure capable of holding the position at each position in the unlocked state. The moderation structure includes a plate-shaped moderation piece 96 provided integrally with the terminal plate 73, and a holding portion 67 provided on the lock body 48 or the connecting shaft 51, to which the moderation piece 96 is engaged and disengaged. The terminal plate 73 is provided with an insertion hole 97 for allowing the connection shaft 51 of the operation knob 47 to be inserted, an elastically deformable contact 95 for the battery 4 and an elastically deformable moderation piece 96 for moderation. . A deformation absorbing portion 99 is provided in a lead portion (plate surface) between the contact point 95 and the moderation piece 96. A pair of contact points 95 are arranged on a straight line passing through the center of the insertion hole 97, and a moderation piece 96 is formed around the insertion hole 97 on a straight line intersecting the straight line.
According to the above configuration, since the moderation piece 96 is provided on the terminal plate 73 as described above, it is not necessary to prepare the moderation piece 96 separately, and the cost can be reduced. Moreover, since the length of the moderation piece 96 can be increased, a clear operational feeling can be obtained when the position is maintained. Furthermore, since the moderation piece 96 is made of a plate material, a clearer operational feeling can be obtained. When the moderation piece 96 is made of metal, an even clearer operational feeling can be obtained. One elastic deformation can affect the other and prevent a preset elastic force from changing, and each elastic force can be maintained in a set proper state. Further, since the distance from the contact point 95 to the moderation piece 96 can be increased as compared with the case where the moderation piece 96 is formed on a straight line passing through the center of the insertion hole 97, the influence of one elastic deformation reaches the other. Can be more reliably prevented. In addition, the space for providing the deformation absorbing portion 99 can be widened, and the reliable deformation absorbing portion 99 can be provided. Therefore, the power supply circuit can be configured without causing contact failure between the contact point 95 and the battery 4. Moreover, the moderation structure can exhibit the moderation function accurately.

A plate-like moderation piece 96 is provided at an opposing position around the insertion hole 97, and a straight line connecting the pair of contact points 95 and a line connecting the pair of moderation pieces 96 can be taken perpendicularly to each other.
According to the above configuration, the direction of the deformation stress when the contact point 95 and the moderation piece 96 are elastically deformed can be varied in the orthogonal direction. Therefore, it is further difficult for the influence of one elastic deformation to reach the other, and the elastic force of the contact point 95 and the moderation piece 96 can always be maintained in an appropriate state. Further, the distance between the contact point 95 and the moderation piece 96 can be maximized. Thereby, the space which provides the deformation | transformation absorption part 99 can be taken wide, and the deformation | transformation absorption part 99 with more certainty can be provided. Furthermore, since the moderation piece 96 is provided at a position opposite to the lock body 48, the lock body 48 and the operation knob 47 are accurately positioned at each position in the locked state and the unlocked state as a moderation structure that provides a firm sense of moderation. Can be held.

The housing has a cylindrical case 7 having an opening 6 at the lower end and a bottom lid 8 that closes the opening 6, and the bottom lid 8 has a lock structure provided between the case 7 and the bottom lid 8. The case 7 is detachably mounted. The bottom lid 8 includes a lid 46 that closes the opening 6 and an operation knob 47 that is rotatably supported by the lid 46. A cleaning body 115 is detachably provided on the case inner surface side of the bottom lid 8.
According to the said structure, the cleaning body 115 can be accommodated in a housing. Therefore, for example, even when the electric razor is carried in a state of being stored in a bag or the like, it is not necessary to carry the cleaning body 115 separately, and the cleaning with the cleaning body 115 can be easily performed. Further, the cleaning body 115 can be prevented from being lost or damaged. Furthermore, since the cleaning body 115 is not exposed to the outer surface, a simple appearance design can be achieved. When necessary, by removing the bottom cover 8 from the case 7, the cleaning body 115 can be separated from the bottom cover 8 and the necessary portions can be easily cleaned.

A plurality of reinforcing ribs 118 project from the case inner surface side of the lid 46. The cleaning body 115 is detachably mounted on a mounting portion 119 configured using the reinforcing rib 118.
According to the above configuration, when the cleaning body 115 is detachably mounted on the mounting portion 119 configured using the plurality of reinforcing ribs 118, the reinforcing rib 118 that reinforces the lid body 46 is mounted to which the cleaning body 115 is mounted. Since it also serves as the portion 119, it is not necessary to separately provide the mounting portion 119, and the structure of the lid body 46 can be simplified correspondingly, and the manufacturing cost of the housing can be reduced.

The left and right widths of the opening 6 and the lid 46 of the case 7 are set to be larger than the front and rear widths, and the outer shapes of the opening 6 and the lid 46 are formed in a horizontally long shape. The cleaning body 115 formed in a rod shape is mounted on the mounting portion 119 in a state along the longitudinal direction of the lid body 46.
According to the above configuration, the long cleaning body 115 can be provided within the range of the lateral dimension of the lid 46. The long cleaning body 115 is easier to operate with fingers than the short cleaning body, but requires a large space for its storage. However, by accommodating the cleaning body 115 in a state along the longitudinal direction of the lid body 46, the cleaning body 115 that is easy to handle can be suitably accommodated using the space on the inner surface of the lid body 46.

The connecting shaft 51 of the operation knob 47 faces the case 7 at the longitudinal center of the lid 46. The cleaning body 115 is mounted on the mounting portion 119 in a state adjacent to the connecting shaft 51.
According to the above configuration, the connecting shaft 51 can protect the fingers and the like from touching the cleaning body 115 when the bottom cover 8 is removed. Therefore, it is possible to prevent the cleaning body 115 from being accidentally removed from the mounting portion 119 by inadvertently touching the cleaning body 115 with a finger or the like, and the cleaning body 115 can be prevented from being lost or damaged. In addition, when the bottom cover 8 falls on the floor surface, the cleaning body 115 can be protected by the connecting shaft 51 to prevent the cleaning body 115 from being separated from the bottom cover 8.

The lock structure includes a lock body 48 coupled to the operation knob 47 so as to be able to rotate together with the operation knob 47, and a locking portion 22 provided on the case 7 side to which the lock body 48 is engaged and disengaged. The operation knob 47 is formed in a horizontally long shape similar to the lid body 46. In a state where the operation knob 47 is unlocked, both ends in the longitudinal direction of the operation knob 47 can be exposed to the outside of the outline of the lid body 46 to protect the cleaning body 115.
According to the above configuration, the cleaning body 115 can be protected by the operation knob 47 in addition to the connecting shaft 51. Therefore, the cleaning body 115 can be well prevented from being accidentally removed from the mounting portion 119, and the cleaning body 115 can be prevented from being lost or damaged. Further, it is possible to protect the cleaning body 115 from separating from the bottom cover 8 by protecting the cleaning body 115 from being directly subjected to a drop impact by the connecting shaft 51 and the operation knob 47.

The housing has a cylindrical case 7 having an opening 6 at the lower end and a bottom lid 8 that closes the opening 6, and the bottom lid 8 has a lock structure provided between the case 7 and the bottom lid 8. The case 7 is detachably mounted. The case 7 includes a case main body 9 and an inner bracket 10 housed in the case main body 9 and assembled with interior parts. The inner bracket 10 is formed with a pair of left and right battery holders 19 that hold the two batteries 4. A display unit 110 that displays the insertion direction of the battery 4 is provided in the battery insertion port 19 a of the battery holder 19.
According to the said structure, the insertion position and direction of the battery 4 can be displayed clearly. Therefore, as long as the battery 4 is loaded in accordance with the display on the display unit 110, it is possible to reliably prevent an erroneous loading of the battery 4.

The display unit 110 is formed integrally with the inner bracket 10, and protrudes toward the opening 6. The display unit 110 is provided on the protrusion 112, and a loading direction display body 113 having a shape imitating the shape of the battery 4. Consists of.
According to the above configuration, the loading direction display body 113 imitating the shape of the battery 4 can understand the insertion direction of the battery 4 at a glance, so that an erroneous loading of the battery 4 can be prevented more reliably. In addition, compared with the case where the display unit 110 is formed as an independent component, the number of components can be reduced, and the trouble of assembling the display unit 110 can be saved.

The loading direction indicator 113 is formed integrally with the protrusion 112 to form a convex or concave pattern.
When the insertion direction indication of the battery 4 is a printed matter such as a paint or a seal, the direction indication may be peeled off due to deterioration over time and disappear. However, when the loading direction indicator 113 is formed integrally with the protruding portion 112 as in the above configuration and formed as a convex or concave pattern, the loading direction indicator 113 is deteriorated even when the usage period is long. In addition, it is possible to eliminate the disappearance and to perform the display function of the loading direction indicator 113 in a stable state over a long period of time.

The projecting portion 112 is provided with an inclined surface 111 that is inclined toward the opening 6, and the loading direction indicator 113 is integrally formed on the inclined surface 111.
According to the above configuration, when the battery 4 is inserted, the loading direction indicator 113 can be oriented in an easy-to-see direction. Therefore, the loading direction display body 113 can be easily visually recognized, and the insertion position and direction of the battery 4 can be clearly displayed.

The housing has a cylindrical case 7 having an opening 6 at the lower end and a bottom lid 8 that closes the opening 6, and the bottom lid 8 has a lock structure provided between the case 7 and the bottom lid 8. The case 7 is detachably mounted. The bottom lid 8 includes a lid 46 that closes the opening 6, an operation knob 47 that is rotatably supported by the lid 46, and a terminal plate 73 that constitutes a power feeding circuit. The lock structure includes a lock body 48 that is rotatably connected to the connection shaft 51 of the operation knob 47, and a locking portion 22 that is provided on the case 7 side and engages and disengages the lock body 48. The terminal plate 73 disposed on the case inner surface side of the lid body 46 is sandwiched and fixed between the lid body 46 and the lower end portion of the lock body 48.
According to the above configuration, the vertical movement of the terminal plate 73 can be restricted only by connecting the lock body 48 to the connection shaft 51 of the operation knob 47. Therefore, the conduction function of the contact point 95 for the battery 4 provided on the terminal board 73 and the position holding function of the moderation piece 96 constituting the moderation structure can be exhibited accurately.

In the electric razor provided with the housing, the case 7 includes a case main body 9 and an inner bracket 10 housed in the case main body 9 and assembled with interior parts. A motor 3 having an eccentric cam 29 and a battery 4 for supplying electric power to the motor 3 are assembled to the inner bracket 10. A vibrator 21 that converts the rotational power of the motor 3 into reciprocating power and transmits the reciprocating power to the cutting blade 2 is formed integrally with the inner bracket 10.
According to the above configuration, it is possible to reduce the number of parts and to save the trouble of assembling the vibrator 21.

Fastening bosses 20 provided on both the left and right sides of the vibrator 21 are formed integrally with the inner bracket 10. The case body 9 and the inner bracket 10 are integrated with a fastening screw 42 screwed into the fastening boss 20 from the case body 9 side.
According to the above configuration, the case main body 9, the inner bracket 10, and the vibrator 21 can be firmly integrated. Further, since the vibrator 21 is provided integrally with the fastening boss 20 fastened by the fastening screw 42, vibration of the vibrator 21 can be well prevented from being generated to generate chatter noise, and the electric razor can be silenced. Can be

The vibrator 21 is disposed in the vibrator chamber R defined between the case body 9 and the inner bracket 10. On the inner surface of the case body 9 facing the transducer chamber R, movable and fixed switch terminals 75 and 76 for turning on and off the energization state of the motor 3 are arranged.
According to the above configuration, the contact portions of the terminals 75 and 76 can be relatively slid by the vibration of the vibrator 21. Therefore, it is possible to prevent the formation of an oxide film serving as an electric resistance at the contact portion between both terminals 75 and 76. In addition, even when an oxide film is formed after being unused for a long period of time, the oxide film can be peeled off by microvibration, so that the reliability of the electric shaver can be improved. Further, the air flow in the vibrator chamber R accompanying the reciprocating drive of the vibrator 21 can blow off dust and the like adhering to the terminals 75 and 76 to optimize the contact state of the terminals 75 and 76.

The transducer chamber R can be a space sandwiched between the upper wall 17 of the inner bracket 10 and the pair of left and right fastening bosses 20, the upper wall 35 of the case body 9, and the front and rear walls 32 and 33.
According to the above configuration, the electric razor can be silenced. This is because sound leakage to the outside is prevented by covering the contact portion between the eccentric cam 29 and the vibrator 21, that is, the entire periphery of the generation source of the tapping sound with the respective members 17, 20, 32, 33, and 35. This is because it can be prevented.

The switch 74 includes a movable side terminal 75 and a fixed side terminal 76 that are opposed to each other in the vertical direction, and a switching mechanism that operates the movable side terminal 75 to and from the fixed side terminal 76. The switching mechanism is rotated together with the slide knob 5 that is reciprocated to the left and right along the outer surface of the case body 9, the eccentric cam 78 that converts the reciprocating operation of the slide knob 5 into a rotating operation, and the eccentric cam 78. The operation shaft 83 is configured to switch the contact / separation state of the movable terminal 75.
According to the said structure, it can prevent that the slide knob 5 is operated accidentally at the time of use. This is because it is difficult to slide the slide knob 5 because the finger holding the electric razor in use often holds the housing 1 along the slide direction of the slide knob 5.

The slide knob 5 is disposed on the front wall 32 of the case body 9 that partitions the transducer chamber R.
According to the above configuration, at least the front surface side of the transducer chamber R can be covered with the double wall. Therefore, noise on the side facing the human body during use can be shielded by the front wall 32 of the case body 9 and the slide knob 5, so that the electric razor can be further silenced.

A moderation structure is provided between the eccentric cam 78 and the case body 9 to hold the eccentric cam 78 at each switching position when the switch 74 is in the on state and the off state. The moderation structure is configured by an elastically deformable annular moderation body 85 formed on the eccentric cam 78 and a moderation protrusion 88 provided on the case body 9 in a state of overlapping the movement locus of the moderation body 85. By sliding the slide knob 5, the moderation body 85 passes between one end and the other end of the moderation protrusion 88 while elastically deforming, and the eccentric cam 78 is held in either the on state or the off state. .
According to the above configuration, the moderation structure can be simplified. In addition, since the moderation body 85 is formed in an annular shape, a large elasticity can be exerted in a small space as compared with the moderation body formed in a cantilever shape, and the moderation function can be accurately exhibited at both ends of the moderation protrusion 88.

A protective cap 100 that covers the outer surface of the cutting blade 2 provided at one end of the housing 1 is detachably attached to the housing 1. The outer surface of the slide knob 5 when not in use is covered with a protective cap 100.
According to the above configuration, for example, when the electric razor is carried in a state of being stored in a bag or the like, the slide knob 5 can be reliably prevented from being turned on by colliding with another object.

Furthermore, the small electric equipment (electric razor) provided with the housing of the said structure can be implemented with the following form.
The bottom lid 8 includes a lid body 46 that closes the opening 6 and an operation knob 47 that is rotatably supported by the lid body 46. The operation knob 47 penetrates the lid body 46 and enters the inside of the case 7. The lock structure includes a lock body 48 that is connected to the connection shaft 51 of the operation knob 47 and a locking portion 22 that is provided on the case 7 side and engages and disengages the lock body 48. In addition, the operation knob 47 and the lock body 48 are connected to each other through a connecting shaft 51 so as to be relatively non-rotatably engaged with each other so that the operation knob 47 and the lock body 48 can rotate together. 48, the lock body 48 can be engaged with and disengaged from the engaging portion 22 by rotating the operation knob 47, and the bottom cover 8 is attached to the opening 6 of the case 7 with a lock structure. The outer dimension (V) defined at both ends of the lid body 46 is equal to both sides of the operation knob 47. In defined as outer dimension (W) housing is smaller than, and the electric shaver having the housing. The housing 1 has an oval shape in plan view, and satisfies the above dimensional relationship at any position on a vertical plane passing through the center thereof.

It has a cylindrical case 7 having an opening 6 at the lower end and a bottom lid 8 that closes the opening 6, and the bottom lid 8 is detachably attached to the case 7. The case 7 includes a case main body 9 and an inner bracket 10 housed in the case main body 9 and assembled with interior parts. The inner bracket 10 is formed with a battery holder 19 that holds at least one battery 4. ing. A small electric device in which a display unit 110 for displaying the insertion direction of the battery 4 is provided in the battery insertion port 19 a of the battery holder 19.
According to this, the insertion position and direction of the battery 4 can be clearly displayed. Therefore, as long as the battery 4 is loaded in accordance with the display on the display unit 110, it is possible to reliably prevent an erroneous loading of the battery 4.

The display unit 110 is formed integrally with the inner bracket 10, and protrudes toward the opening 6. The display unit 110 is provided on the protrusion 112, and a loading direction display body 113 having a shape imitating the shape of the battery 4. A small electrical device made up of.
According to the display unit 110, the loading direction display body 113 imitating the shape of the battery 4 can understand the insertion direction of the battery 4 at a glance, so that a wrong loading of the battery 4 can be prevented more reliably. In addition, compared with the case where the display unit 110 is formed as an independent component, the number of components can be reduced, and the trouble of assembling the display unit 110 can be saved.

A small electric device in which the loading direction indicator 113 is formed integrally with the projecting portion 112 and is formed as a convex or concave pattern.
When the insertion direction indication of the battery 4 is a printed matter such as a paint or a seal, the direction indication may be peeled off due to deterioration over time and disappear. However, if the loading direction indicator 113 is formed integrally with the protrusion 112 and formed as a convex or concave pattern, the loading direction indicator 113 deteriorates or disappears even when the usage period is long. And the display function of the loading direction indicator 113 can be exhibited in a stable state over a long period of time.

A small electric device in which a protruding portion 112 is provided with an inclined surface 111 inclined toward the opening 6, and a loading direction indicator 113 is integrally formed on the inclined surface 111.
When the inclined surface 111 inclined to the opening 6 is provided on the projecting portion 112 and the loading direction indicator 113 is integrally formed on the inclined surface 111, the loading direction indicator 113 can be easily viewed when the battery 4 is inserted. Can be oriented. Therefore, the loading direction display body 113 can be easily visually recognized, and the insertion position and direction of the battery 4 can be clearly displayed.

  FIG. 14 shows another embodiment of the bottom cover 8. In this embodiment, as shown in FIG. 14, the lock body 48 is formed of a plastic molded product in which a base portion 48a and a locking body 64 that is formed to project at a position opposite to the base portion 48a are integrally formed. A step portion 65 and a mounting hole 66 are formed inside the base portion 48a so as to penetrate the lock body 48 vertically. The connecting shaft 51 is integrally formed with one holding portion 67 that constitutes a moderation structure together with the moderation piece 96. The second terminal plate 73 is formed by bending one moderation piece 96 from the main lead portion 94. The second terminal board 73 can be fixed to the lid body 46 or the connecting shaft 51 by bonding or C-ring. The moderation structure of the above embodiment can hold the position only when the operation knob 47 is in the unlock position, but can hold the position only when the operation knob 47 is in the lock position. It may be. Since the other points are the same as those in the previous embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted.

  FIG. 15 shows another embodiment of the second terminal board (terminal board) 73. This embodiment is different from the previous embodiment in that a spring contact 95 having a U-shape is continuously formed from the deformation absorbing portion 99 that is bent and formed in a staircase shape. In this case, of the two bent portions forming the staircase, the lower bent portion is referred to as an end lead portion 94a. Since the other points are the same as those in the previous embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted. According to such a spring contact 95, since the spring contact 95 can be formed at the same time in the step of forming the deformation absorbing portion 99 with a press, the manufacturing cost of the second terminal plate 95 can be reduced. . Also in this embodiment, the deformation absorbing portion 99 is formed in a staircase shape, and the terminal plate 73 includes a main lead portion 94 where the moderation piece 96 rises and an end lead portion 94a where the contact point 95 rises. The portion 94 and the end lead portion 94 a are positioned below the main lead portion 94 by the step-shaped deformation absorbing portion 99. Further, the vertical dimension of the contact 95 in a free state rising from the end lead portion 94a is set to be larger than the vertical dimension of the step.

FIG. 16 shows a modification of the deformation absorbing portion 99 of the second terminal board 73.
FIGS. 16A to 16D are partial front views showing modifications of the deformation absorbing portion 99 of the second terminal board 73. In FIG. 16A, the deformation absorbing portion 99 is formed by an inverted U-shaped bent portion. In FIG. 16B, the deformation absorbing portion 99 is formed by a bellows-like continuous bending portion. As shown in FIGS. 16A and 16B, when the deformation absorbing portion 99 is formed of a bent portion, it is generated in the end lead portion 94a or the main lead portion 94 due to elastic deformation of the spring contact 95 or the moderation piece 96. The deformation stress is absorbed by the elastic deformation of the bent portion of the deformation absorbing portion 99, and the influence of one elastic deformation can be blocked from reaching the other. Moreover, in FIG.16 (c), the deformation | transformation absorption part 99 was formed by the V-shaped notch extended in the front-back direction. In FIG. 16 (d), the deformation absorbing portion 99 is formed by a plate thickness reducing portion in which the plate thickness is reduced. As shown in FIGS. 16C and 16D, when the deformation absorbing portion 99 is formed by a plate thickness reducing portion, the end lead portion 94a or the main lead portion 94 is formed by elastic deformation of the spring contact 95 or the moderation piece 96. The generated deformation stress is absorbed by elastic deformation of the thin portion of the deformation absorbing portion 99, and the influence of one elastic deformation can be blocked from reaching the other. As described above, the deformation absorbing portion 99 can be formed by a bent portion or a plate thickness reducing portion provided between the main lead portion 94 and the end lead portion 94a. FIG. 16E is a plan view showing a modification of the deformation absorbing portion 99 of the second terminal board 73. Here, the deformation absorbing portion 99 is formed by a narrow portion formed by a notch provided in the plate width direction of the lead portion including the end lead portion 94a and the main lead portion 94. As described above, even when the narrow portion is provided, the deformation stress is absorbed by the elastic deformation of the narrow portion and blocks the influence of one elastic deformation on the other, similarly to the above. be able to. Moreover, since the deformation | transformation absorption part 99 can be formed only by stamping and forming with a press machine, the manufacturing cost of the 2nd terminal board 95 can be reduced.

  In the above embodiment, the cutting blade 2 is composed of the inner blade 12 and the outer blade 13, but it is not necessary, and the cutting blade has a shape in which a plurality of thin wires intersecting the cutting blade are arranged on the blade surface of the inner blade 12. A blade, that is, a cutting blade in which the outer blade is omitted may be used. Furthermore, various electric appliances such as an electric toothbrush, an electric nail brush, a hair ball remover, and a flashlight can be considered as the small electric device of the present invention. Moreover, in the said Example, although the lock body 48 and the connection shaft 51 were fixed by engagement with the step part 65 and the engagement nail | claw 53, it is the structure which fixed the lock body 48 and the connection shaft 51 with the screw. Alternatively, the lock body 48 and the connecting shaft 51 may be integrally formed. In the case of integral formation, the lid body 46 may be configured as a two-divided case of front and rear, and coupled with screws or the like with the connecting shaft 51 sandwiched therebetween. The moderation body 85 is formed in an annular shape, but is not necessary, and may be formed in a polygonal shape including a straight portion or an M-shape. In short, the moderation body 85 may be connected to the cam base 82 at two or more locations so as to be elastically deformable. The operation knob 47 may be a circular dial.

2 Cutting blade 3 Motor 4 Battery 5 Slide knob 6 Opening 7 Case 8 Bottom lid 9 Case body 10 Inner bracket 17 Upper wall 19a Battery insertion port 20 Support wall 21 Vibrator 22 Locking portion 23 Protrusion 29 Eccentric cam 32 Front wall 33 Rear Wall 35 Upper wall 42 Fastening screw 46 Lid 47 Operation knob 48 Locking body 51 Connecting shaft 52 Elastic arm 52a Slit 53 Engaging claw 59 Shaft hole 63 Connecting boss 64 Locking body 65 Step portion 66 Mounting hole 69 Rib 74 Switch 75 Movable Side terminal 76 Fixed side terminal 78 Eccentric cam 83 Operation shaft 85 Moderation body 88 Moderation projection 96 Moderation piece 99 Deformation absorbing portion 100 Protection cap step portion 110 Display portion 111 Inclined surface 112 Projection portion 113 Loading direction display body 115 Cleaning body 118 Reinforcement rib 119 Mounting part R Vibrator chamber

Claims (2)

It has a cylindrical case (7) having an opening (6) at the lower end and a bottom lid (8) that closes the opening (6), and the bottom lid (8) is detachably attached to the case (7). A small electrical device,
The case (7) includes a case main body (9) and an inner bracket (10) accommodated in the case main body (9).
The inner bracket (10) is formed with a battery holder (19) for holding at least one battery (4),
A display section (110) for displaying the insertion direction of the battery (4) is provided at the battery insertion opening (19a) of the battery holder (19) ,
The display part (110) is formed integrally with the inner bracket (10), and is provided on the protrusion (112) protruding to the opening (6) side, and the protrusion (112). And a loading direction display body (113) having a shape imitating the shape,
The protruding portion (112) is provided with an inclined surface (111) that is inclined to face the opening (6).
A small electric device characterized in that a loading direction indicator (113) is integrally formed on an inclined surface (111) . The small electric device according to claim 1, wherein the loading direction indicator (113) is formed integrally with the protruding portion (112) and is formed as a convex or concave pattern .

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