Electric hair cutter or styling apparatus

Abstract: A rotating/reciprocating movement converting part is provided in a main body (1) and a connecting arrangement rod (9) is projected from the upper surface of the main body (1). When a shaver head (3) is mounted on the main body, the connecting arrangement is fitted to a connecting part (50) in the side of an inner cutting blade to transmit a reciprocating movement to an inner cutting blade (20). When a trimmer head is mounted on the main body, the recessed inside part of the driving rod 9 is fitted to a connecting part in the side of a movable cutting blade to transmit a reciprocating movement to a movable cutting blade. Thus, according to the present invention, problems such as an enlarged head and the deterioration of sharpness of a conventional electric hair cutter having a rotating/ reciprocating movement converting part provided in the head can be overcome.

Description: BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an electric hair cutter or styling apparatus which has a common main body and allows selectively changing between different hair cutting and styling devices, and in particular a trimmer head and a shaver head depending on usage. Description of Prior Art There have been hitherto proposed various kinds of types of electric hair cutters in which a head suitable for its usage can be selected and attached to a common main body. However, each of these electric hair cutters has a driving source and transmitting means for transmitting a rotating movement by the driving source in a main body side and a rotating/reciprocating movement converting part for converting the rotating movement transmitted by the transmitting means into a reciprocating movement and a cutting blade block in a head side. However, since the rotating/reciprocating movement converting part is provided in the head side in the above described conventional electric hair cutter, the head itself is undesirably large. Accordingly, it is inconvenient to store and carry the electric hair cutter, and it is costly to order a new electric hair cutter when the old hair cutter is lost or broken. Further, in the configuration having the rotating/reciprocating movement converting part arranged in the head, it is difficult to completely suppress vibration or noise. Besides, driving energy is divided so that sharpness is disadvantageously degraded. An electronic hair cutting or styling apparatus according to the preamble of claim 1 is known from the document US-A-3 869 790. It is also possible to use other changeable devices for hair styling purposes and the above shortcomings would also be present there correspondingly. SUMMARY OF THE INVENTION The present invention has been devised by considering the above described drawbacks and it is an object of the present invention to provide an electric hair cutting or styling apparatus which can be easily stored or carried without vibration or noise, which has excellent sharpness or corresponding features and in which a head with a cutting or styling device can be selectively attached depending on the needs of a user. The advantages of the invention are based on an apparatus including the features of claim 1. According to a first aspect of the present invention, there is provided an electric hair cutter which can select a shaver head or a trimmer head and exchange one for the other, the electric hair cutter comprising: a motor serving as a driving source provided in a main body; a shaver head having an inner cutting blade and an outer cutting blade and a trimmer head having a fixed cutting blade and a movable cutting blade, the shaver head and the trimmer head being selectively and detachably attached to the upper part of the main body, characterized in a driver portion for converting a rotating movement by the motor into a reciprocating movement; a driving rod protruding from the upper part of the main body to perform a reciprocating movement in association with the driver portion, wherein when the trimmer head is mounted on the main body, a connecting part in the side of the movable cutting blade provided in the trimmer head is connected to the driving rod, and when the shaver head is mounted on the main body, a connecting part in the side of the inner cutting blade provided in the shaver head is connected to the driving rod. Thus, the driver portion serving as the rotating/ reciprocating movement converting part which is conventionally provided in the head side can be arranged in the main body side. According to another aspect of the present invention, there is provided an electric hair cutter which allows selectively changing between a trimmer head and a shaver head. According to a further aspect of the present invention, there is provided an electric hair cutter which allows selectively changing between a trimmer head and a shaver head, characterized in that the driving rod is formed in a substantially recessed shape, the inside part of the recessed shape of the driving rod is used as the connecting part for the trimmer and the outside part is used as the connecting part for the shaver, the connecting part in the side of the movable cutting blade is formed in a protruding shape so as to be fitted to the connecting part for the trimmer of the driving rod and the connecting part in the side of the inner cutting blade is formed in a recessed shape so as to be fitted to the connecting part for the shaver of the driving rod. Thus, the connection states respectively corresponding to the movable cutting blade in the trimmer head and the inner cutting blade in the shaver head can be realised by the driving rod in a more compacted form. According to one further aspect of the present invention, there is provided an electric hair cutter which allows selectively changing between a trimmer head and a shaver head, characterized in that the connecting part in the part relating to the movable cutting blade located in the trimmer head is provided with a groove opened toward a direction in which the driving rod moves forward. Thus, the rigidity of the connecting part in the part relating to the movable cutting blade can be decreased. According to an aspect of the present invention, there is provided an electric hair cutter which allows to selectively change between a trimmer head and a shaver head, characterized in that the connecting part in the part relating to of the movable cutting blade arranged in the trimmer head is provided with a part protruding in a direction perpendicular to the advancing direction of the driving rod. Thus, a space is formed between the connecting part on the side of the movable cutting blade and the connecting part for the trimmer in the connecting part. According to an aspect of the present invention, there is provided an electric hair cutter which allows selectively changing between a trimmer head and a shaver head, characterized in that a foot part opposite to the edge of the movable cutting blade is located on the extension of a center line of the driving rod when the trimmer head is mounted on the main body. Thus, since the foot part serves as a supporting point of the rotating movement of the movable cutting blade, the influence of the force of a force spring is not applied to the pressing load on the blade of the cutting blade. According to an aspect of the present invention, there is provided an electric hair cutter which allows selectively changing between a trimmer head and a shaver head, characterized in that the shaver head is provided with a set lever for accommodating the inner cutting blade therein so as to be retractable and having a rotary supporting point part on which the set lever rotates relative to the shaver head, a hook part for engaging the set lever and a hanging part with which fingers engage. Thus, the inner cutting blade can be securely mounted in the shaver head and taken out as desired. According to an aspect of the present invention, there is provided an electric hair cutter which allows selectively changing between a trimmer head and a shaver head, characterized in that the rotary supporting point part is formed in the shapes of columns protruding from both ends in the width direction of the set lever and a rib passes through the entire width thereof and the hook part is provided with hooks through a space at both ends in the width direction of the set lever. Thus, the distance between a pair of columns in the rotary supporting point part can be maintained to a substantially fixed and the distance between a pair of hooks in the hook part can be changed in accordance with the bending or flexure of the set lever. According to an aspect of the present invention, there is provided an electric hair cutter which allows selectively changing between a trimmer head and a shaver head, characterized in that the hanging part is formed in a substantially circular arc shape protruding and extending longitudinally in a hook form from a side opposite to the rotary supporting part in the set lever and a groove is provided in the longitudinal direction on the upper surface side of the hanging part. Thus, the fingers can be easily engaged with the hanging part and a rod type member can be engaged with the groove thus provided. According to an aspect of the present invention, there is provided an electric hair cutter which can select a trimmer head or a shaver head and engage one for the other, characterized in that the configuration of the set lever from the hanging part to the hook part is asymmetrical with respect to a longitudinal center line. Thus, when force is exerted on the hanging part upon opening or closing the set lever, an asymmetric force is generated relative to the center line in the longitudinal direction to incline the set lever between the hanging part and the hook part. BRIEF DESCRIPTION OF THE DRAWINGS The object and other objects and advantages of the present invention will appear more clearly from the following specification in conjunction with the accompanying drawings in which: Fig. 1 is a schematic sectional view showing the internal structure of a shaver head. Fig. 2(a) is a side view of an electric hair cutter when a trimmer head is attached to a main body. Fig. 2(b) is a front view of the above. Fig. 2(c) is a front view of the shaver head. Fig. 3 shows a front view of the electric hair cutter when the shaver head is attached to the main body. Fig. 4 shows the main body when the head is not attached to the main body, Fig. 4 (a) is a partly sectional view of the main body, and Fig. 4 (b) is an enlarged view of a driving rod in Fig. 4(a). Fig. 5 is a sectional view of a trimmer cutting blade block to be mounted on the trimmer head. Fig. 6 shows a rear view of the trimmer cutting blade block connected to the driving rod. Fig. 7 (a) is a schematic view showing the same state as that of Fig. 6 as viewed from the front of the driving rod. Fig. 7(b) is an enlarged view of a connecting part in the side of a movable cutting blade in Fig. 7(a). Fig. 8 is a top view of a set lever. Fig. 9 is a perspective view of an alternative example of the set lever. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In general, in the figures there is shown an electric hair cutting or styling apparatus, comprising a main body 1 and at least two head portions 2, 3, said main body 1 including an electric motor 7 and each of said head portions including a hair cutting or styling device 11, 19. The head portions are changeably connected to the main body, wherein a connecting arrangement being arranged between the electric motor 7 and the hair cutting or styling device 11, 19. The connecting arrangement is provided in and/or at the main body 1, while the head portions are bearing the hair cutting or styling devices which are formed so as to transmit a reciprocating movement from the motor 7 via the connecting arrangement to the respective hair cutting or styling device 11, 19 of the respective head portion which is currently connected to the main body, because the user needs the corresponding function of the respective head portion. While in the following the invention is explained by referring to a trimmer and a cutter head 2, 3 as the head portions, it has to be kept in mind that also head portions with other hair cutting and styling functions can profit from the principles of the present invention. One example can be an epilation device. Now, the present invention will be described by way of an embodiment shown in the accompanying drawings. Fig. 2(a) is a side view of an electric hair cutter having a trimmer head 2 attached to a main body 1. Fig. 2(b) is a front view of the above electric hair cutter. Fig. 2(c) is a front view of a shaver head 3. In the trimmer head 2, the direction of the edge of a cutting blade of a trimmer cutting blade block 11 is inclined by an angle α with respect to the longitudinal direction of the main body 1, as shown in Fig. 2(a). This inclination is designed by considering the maneuverability for a user. As the angle α in the trimmer head, the angle desirably ranges from 30° to 60°. Of course, it is possible to use other angles. As shown in Fig. 2(c), a net type outer cutting blade is attached to the shaver head 3 so as to come into contact with an outer part. Now, the main body 1 will be described below in detail. The main body 1 is provided with head exchange buttons 4. When the head exchange buttons 4 are pushed from outside, the head is detachable. Therefore, the trimmer head 2 and the shaver head 3 can be selectively attached to the main body 1. In this case, for the head exchange button 4, it is to be understood that the different forms, positions and numbers of exchange buttons may be employed. Fig. 4 shows the main body 1 to which the head is not attached. Fig. 4(a) is a sectional view and Fig. 4(b) is an enlarged view of a driving rod 9 shown in Fig. 4(a). As shown in Fig. 4(a), a driving switch 5 is disposed in the front part of the main body 1. The driving switch 5 slides to control the supply of power to a motor 7 from a battery 6 accommodated in the main body 1 and control the vibration of the cutting blade block. An excentric shaft 8 is pressed-in and fitted to be fixed to the motor 7. The excentric shaft 8 is fitted to a groove provided in a driver portion 30. Further, the driving rod 9 connected to the driver 30 protrudes from the upper part of the main body 1. Accordingly, a rotational movement transmitted to the excentric shaft 8 from the motor 7 is converted into a reciprocating movement in the driver portion 30 and the reciprocating movement is transmitted to the driving rod 9. As shown in Fig. 4(b), the driving rod 9 is formed substantially in a recessed shape or U-shape in the inner part which is used as a connecting part 9a for a trimmer and the outer part which is used as a connecting part 9b for a shaver. A pair of protruding parts 9c is formed extending in the directions of both side surfaces from the connecting part 9b for the shaver. Further, a coil type biasing spring 10 is embedded in a substantially central part of the connecting part 9a for the trimmer. Now, the trimmer head 2 will be described in detail. Fig. 5 shows a sectional view of the trimmer cutting blade block 11 to be mounted on the trimmer head 2. Fig. 6 is a sectional view of the trimmer cutting blade block 11 in a state in which it is connected to the driving rod 9. Fig. 7(a) is a schematic view showing the above state as viewed from the front of the driving rod 9. Fig. 7(b) is an enlarged view of a connecting part 40 in the side of a movable cutting blade in Fig. 7(a). As shown in Fig. 5, a fixed cutting blade 13 is fixed to a fixing plate 12 made of synthetic resin and a movable cutting blade 14 is similarly fixed to a guide plate 15 made of synthetic resin. A pressing spring 16 is mounted on the fixing plate 12. The fixing plate 12 comes into resilient contact with the guide plate 15 through the pressing spring 16. The movable cutting blade 14 slides relative to the fixed cutting blade 13 in accordance with the reciprocating movement transmitted from the main body 1 so that hairs are cut. As shown in Figs. 6 and 7, the connecting part 40 in the side of the movable cutting blade provided in the guide plate 15 is fitted to the recessed or U-shaped connecting part 9a for the trimmer in the driving rod 9 protruding from the main body 1 so that the guide plate 15 is connected to the driving rod 9. A pair of protruding parts 40a are formed in the directions of both side surfaces in the connecting part 40 in the side of the movable cutting blade. Thus, the reciprocating movement of the driving rod 9 is transmitted to the movable cutting blade 14 fixed or rigid to the guide plate 15 through the protruding parts 40a. The protruding parts 40a are formed so that a space is formed between the connecting part 40 in the side of the movable cutting blade and the connecting part 9a for the trimmer upon connection thereof. The generated space allows the connecting part 40 to freely rotate by angle β even during the connection as shown in Fig. 7(b). Thus, unevenness generated during assembling and manufacturing steps may be tolerated to some degree. In order to tolerate the unevenness to a maximum degree in accordance with the above described method, both of the pair of protruding parts 40a may be formed in the same circular arc shapes and the centre of both of the circular arc shapes may be made to coincide with each other. According to the present invention, the connecting part 40 in the side of the movable cutting blade is provided with a groove 40b opened toward the direction in which the driving rod 9 moves forward to generate the bend or flexure of the connecting part 40, so that unevenness in dimension or inclination for the connecting part in the side of the movable cutting blade is further tolerated. As described above, according to the present invention, while the unevenness in the advancing direction of the driving rod 9 is permitted, unevenness in other directions is substantially not tolerated. Thus, the movable cutting blade block can be conversely securely held. Further, in order to prevent the deviation of the movable cutting blade 14, the center line of the force spring 10 embedded in the connecting part 9a for the trimmer of the driving rod 9 is aligned with the center line of the driving rod 9. Still further, the center line of the force spring 10 is set such that its extension line is superposed on a foot pat 14a as the supporting point of the rotating movement of the movable cutting blade 14. In this manner, the pressing load on the edge of the cutting blade is not increased nor decreased under the influence of the force spring 10. If the above described extension line is superposed on a position closer to the blade side of the cutting blade than to the foot part 14a, the pressing load on the edge of the cutting blade will be higher than a set load. On the contrary, if the extension line is superposed on a position further away from the blade of the cutting blade than the foot part 14a, the pressing load on the edge of the cutting blade will be lower than the set load. Now, the shaver head 3 will be described below. Fig. 1 is a schematic sectional view showing the internal structure of the shaver head 3. The shaver head 3 comprises an outer cutting blade frame 17, an inner cassette 18, an outer cutting blade 19, an inner cutting blade 20 and a set lever 21. The shaver head 3 is attached to the main body 1 by a hook extended from the head exchange button 4. The connecting part 9b for the shaver in the outside part of the driving rod 9 protruding from the main body 1 has a pair of protruding parts 9c. Since the inner cutting blade 20 is provided with a recessed or U-shaped connecting part 50 inside the inner cutting blade, when the shaver head 3 is attached to the main body 1, the connecting part 50 in the side of the inner cutting blade is fitted to the connecting part 9b for the shaver to be connected thereto. The reciprocating movement of the driving rod 9 is transmitted to the inner cutting blade 20 through the protruding parts 9c and the inner cutting blade 20 slides relative to the outer cutting blade 19 to cut hairs. The protruding parts 9c of the driving rod 9 are formed as a protrusion of substantially circular arc shape as viewed from the front sides thereof. The side face part of the connecting part 50 for the shaver which comes into contact with the protruding parts 9c is formed in a substantially recessed circular arc shape as viewed from the direction of its bottom face. Accordingly, upon transmission of power, the power is smoothly transmitted to the inner cutting blade without interference of the force spring 10 embedded in the driving rod 9. The outer cutting blade frame 17 is attached to the main body 1 by the head exchange button 4. The inner cassette 18 to which the thin outer cutting blade 19 with many cutting blade holes formed thereon is thermally welded is attached to the outer cutting blade frame 17. Although the inner cassette 18 can vertically freely slide, it is not detached from the outer cutting blade frame 17 by a stopper 17a. In the lower part of the inner cutting blade 20, the set lever 21 is provided. A cylindrical rotary supporting point part 21a provided in the set lever 21 is inserted into the inner cassette 18, so that the set lever 21 is rotatable about the rotary supporting point part 21a. An opened set lever 21' is brought to a rotating state about the rotary supporting point part 21a as a supporting point as illustrated in Fig. 1. In an ordinary using state, a hook part 21b provided in the set lever 21 is engaged with the inner cassette 18. Accordingly, the provision of the set lever 21 allows the inner cutting blade 20 to be detachably attached to the inner cassette 18. Fig. 8 shows a top view of the set lever 21. The rotary supporting point part 21a comprising a pair of cylindrical parts is provided at one end of the set lever and a hanging part 21c on which fingers are engaged is longitudinally formed in a hook shape at the other end opposite thereto. Further, a hook part 21b comprising a pair of hooks is provided near the hanging part 21c. While the set lever 21 has inside a space through which the driving rod 9 passes and performs a reciprocating movement, a rib 21d is extended throughout the entire width of the rotary supporting point part 21a so as to connect a pair of cylindrical parts together. Therefore, the distance between the both cylindrical parts is substantially fixed. On the other hand, since a rib or the like is not provided between a pair of hooks in the hook part 21b, the distance between the both hooks can be freely changed due to the bending or flexure of the hook part within a certain range. Accordingly, the rotary supporting point part 21a is not unexpectedly detached from the inner cassette 18 so that the hook part 21b can be easily fitted to and detached from the inner cassette 18. Since the hanging part 21c of the set lever 21 protrudes in a substantially circular arc shape when viewed from the top of the set lever 21, the hanging part is easily engaged with the bellies of fingers and the amount of engagement with nails or the like is also increased. Further, a groove 21e is longitudinally provided on the upper surface side of the hanging part 21c. The above described groove 21e is used as a hook part when a thin rod or the like is employed so that the set lever 21 can be more readily opened, Fig. 9 shows a perspective view of an alternative example of the set lever 21. One cylindrical wire is used to form a rotary supporting point part 21a, a hook part 21b and a hanging part 21c. Only the one wire from the hook part 21b to the hanging part 21c has a recessed part 21f. When force is exerted on the hanging part 21c, the unbalance in deformation is generated between the wire having the recessed part 21f and the wire having no recessed part in the hook part 21b and the hanging part 21c. As a result, the hook part 21b is slantingly inclined. Accordingly, the hook part 21b is fitted to or detached from the inner cassette 18 with ease. As mentioned above, according to the present invention, the driver which has been hitherto arranged in the head side is provided in the main body side, so that the head can be compactly formed, the electric hair cutter can be easily carried and stored and the cost required when the head is lost or broken can be lowered. Further, according to the present invention, since the driving source for the rotating movement and the rotating/reciprocating movement converting part are arranged in the same block in the main body, a structure can be obtained in which the vibration is hardly generated when the rotating movement is converted into the reciprocating movement. Consequently, noise and vibration can be reduced and sharpness can be improved. Still further, according to the present invention, when the movement is transmitted to the head, it is already converted into the reciprocating movement so that the driving rod and the connecting part in the side of the head transmit the movement without changing the connection state. Therefore, an influence of the unevenness in dimension is smaller than in the case when the rotating/ reciprocating movement conversion is carried out in the connecting part in the side of the head. In other words, a dimensional allowance for the unevenness in processes is improved. Still further, according to the present invention, since the connecting parts are provided in the different positions of the same member to adopt a proper connection state according to circumstances, the connection state suitable for each head can be realised and one head can be hardly subjected to the influence such as the abrasion, deformation or the like of the other head upon use. Still further, according to the present invention, when the trimmer head is attached to the main body, the inside part of the recessed or U-shaped driving rod can be connected to the movable cutting blade to use the electric hair cutter. In this case, since a relatively large load is exerted on the connecting part, the inside part of the recessed part or U-shaped part high in its rigidity is employed as the connecting part. Thus, the connection state is hardly changed so that the generation of noise or the deterioration of sharpness can be prevented. When the shaver head is attached to the main body, the outside part of the recessed part of the driving rod can be connected to the inner cutting blade to use the electric hair cutter. In this case, the inner cutting blade is relatively light so that the allowance for unevenness in connection states is low. Therefore, the outside part with low rigidity is employed as the connecting part so that the above described unevenness can be tolerated. Still further, according to the present invention, the rigidity in the connecting part in the side of the movable cutting blade can be lowered to tolerate a dimensional unevenness. It also prevents abrupt generation of excessive load on a driving source such as a motor upon the cutting. Further, according to the present invention, since a space is formed between the connecting part in the side of the movable cutting blade and the connecting part for the trimmer in the connecting part except for the protruding part, unevenness in the inclination of the connecting part in the movable cutting blade side and the connecting part for the trimmer which is generated upon assembly of the main body or assembly of the cutting blade block can be tolerated. Still further, according to the present invention, since the influence of the force spring is not applied to the pressing load on the edge of the cutting blade, the seizure between the fixed cutting blade and the movable cutting blade due to the increase of pressing load or the degradation of sharpness due to the decrease of pressing load can be prevented. Still further, according to the present invention, since the inner cutting blade is securely mounted on the shaver head, when the shaver head is attached to the main body, it can be readily attached to the main body without paying attention to the connected condition of the driving rod and the inner cutting blade. Even when the shaver head is detached from the main body, the inner cutting blade is kept mounted on the shaver head, so that the loss of the inner cutting blade can be prevented. Further, the inner cutting blade can be conveniently taken out, so that the inner cutting blade can be cleaned or replaced by another one to maintain a sanitary using state. Additionally, according to the present invention, the distance between a pair of columns in the rotary supporting point part is maintained to a substantially fixed, so that the set lever is prevented from being unexpectedly detached from the cassette of the main body. Since the distance between a pair of hooks in the hook part can be changed by the bend or flexure of the set lever, even when a side to which the set lever is attached has high rigidity, the set lever can be easily opened and closed. Furthermore, according to the present invention, since the hanging part is easily engaged with fingers, the set lever can be opened and closed without difficulty. Further, since the groove provided in the hanging part is engaged with a rod type member, the set lever can be readily opened or closed also by using a tool. Besides, according to the present invention, since the set lever is inclined between the hanging part and the hook part, even when the attaching part of the set lever has high rigidity, the set lever can be opened or closed with ease. On the other hand, since the inclination is hardly generated between the hook part and the rotary supporting point part, there is no fear that the set lever is unexpectedly detached from the cassette of the main body. Fig. 1. 1 main body 3 shaver head 9 driving rod 9b connecting part for shaver 19 outer cutting blade 20 inner cutting blade 21 set lever 21a rotary supporting point part 21b hook part 21c hanging part 30 driver 50 connecting part in the side of inner cutting blade

Claims: Electronic hair cutting or styling apparatus, which allows selectively changing between head portions (2, 3), comprising a main body (1) and at least two head portions (2,3), said main body (1) including an electric motor (7) and each of said head portions (2, 3) including a hair cutting or styling device (11, 19, 20), the head portions (2, 3) being changeably connected to the main body (1), wherein a connecting arrangement is arranged between the electric motor (7) and the hair cutting or styling device (11, 19, 20), wherein the connecting arrangement is provided in and/or on the main body (1), while the head portions (2, 3) bearing the hair cutting or styling devices (11, 19, 20) are formed so as to transmit a reciprocating movement from the motor (7) via the connecting arrangement to the respective hair cutting or styling device (11, 19, 20) of the respective head portion (2, 3) which is temporarily connected to the main body (1); said head portions being either a shaver head (3) having an inner cutting blade (20) and an outer cutting blade (19), or a trimmer head (2) having a fixed cutting blade (13) and a movable cutting blade (14), characterised in that said connecting arrangement comprises a driver portion for converting a rotating movement of the motor (7) into a reciprocating movement, and a driving rod (9) protruding from the upper part of the main body (1) to perform the reciprocating movement interlocking with the driver portion, and in that a connecting part (9a) for a trimmer for transmitting the reciprocating movement by being connected to a connecting part (40) on the side of the movable cutting blade (14), upon mounting the trimmer head (2) on the main body (1), and a connecting part (9b) for a shaver for transmitting the reciprocating movement by being connected to a connecting part (50) on the side of the inner cutting blade (20), upon mounting the shaver head (3) on the main body (1), are provided at separate positions of the driving rod (9). Apparatus according to claim 1, wherein said shaver head (3) and said trimmer head (2) are selectively and detachably attached to the upper part of the main body (1), wherein when the trimmer head (2) is mounted on the main body (1), the connecting part (40) on the side of the movable cutting blade (14) provided in the trimmer head (2) is connected to said driving rod (9), and when the shaver head (3) is mounted on the main body (1), the connecting part (50) on the side of the inner cutting blade (20) provided in the shaver head (3) is connected to said driving rod (9). Apparatus according to claim 1, wherein: said driving rod (9) is formed in a substantially recessed shape, the inside part (9a) having the recessed shape of the driving rod (9), is used as the connecting part for the trimmer (2) and the outside part (9c) is used as the connecting part for the shaver (3); the connecting part on the side of the movable cutting blade (14) is formed in a protruding shape (40a; 10) so as to be fitted to the connecting part of the driving rod (9) for the trimmer (2); and the connecting part on the side of the inner cutting blade (20) is formed in a recessed shape so as to be fitted to the connecting part of the driving rod for the shaver (3). Apparatus according to claim 3, wherein the connecting part on the side of the movable cutting blade (14) provided in the trimmer head (2) is provided with a groove opened toward a direction in which the driving rod (9) moves forward, and/or in particular the connecting part on the side of the movable cutting blade (14) provided in or on the trimmer head (2) is provided with a protruding part perpendicular to the advancing direction of the driving rod (9). Apparatus according to any one of claims 1 to 4, wherein a foot part opposite to the edge of the movable cutting blade (14) is located on the extension of a center line of the driving rod (9). Apparatus according to any one of claims 1 to 5, wherein said shaver head (3) is provided with a set lever for accommodating the inner cutting blade (20) therein so as to be retractable and has a rotary supporting point part (21 a) on which the set lever (21) rotates relative to the shaver head (3), a hook part (21b) for engaging the set lever (21) and a hanging part (21c) for engaging fingers. Apparatus according to claim 6, wherein said rotary supporting point part (21a) is formed in the shape of columns protruding from both ends in the width direction of the set lever (21), and a rib (2 1d) passes through the entire width thereof, and the hook part (21b) is provided with hooks through a space at both ends in the width direction of the set lever (21). Apparatus according to claim 6 or 7, wherein said hanging part is formed in a substantially circular arc type protruding shape extending longitudinally in a hook shape from a side opposite to the rotary supporting point part (21a) in the set lever (21). Apparatus according to claim 6, wherein the configuration of the set lever (21) from the hanging part to the hook part (21b) is asymmetrical with respect to a longitudinal center line.

Inventors: UENISHI YASUO, YAMAGISHI YUUJI, UENISHI, YASUO, YAMAGISHI, YUUJI, Uenishi, Yasuo c/o Shiga Kobayashi Seiko Co., Ltd., Yamagishi, Yuuji c/o Matsushita Electric Works,Ltd
Applicants: MATSUSHITA ELECTRIC WORKS LTD, MATSUSHITA ELECTRIC WORKS, LTD.
Application year: 2001
Main classification: B26B19
IPC codes: B26B19