JPH0246842Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Industrial application field) This invention allows the guide groove provided in the head, which is supported by the head of the holder so that it can freely swing from side to side, to be inserted and inserted so as to be able to move laterally from side to side. This invention relates to a skew safety razor which is provided with a cartridge holder so that it can be skewed and automatically returned to its original position.

(Prior art) Various ideas have been made to apply the pull-cut principle to make the cutting edge of a safety razor reciprocate, rotate, or move diagonally in order to improve the shaving quality and increase durability. However, a practical skew safety razor that can move the cartridge holder laterally as the head rotates, skews it, and automatically returns it to its original position has not yet been developed.

(Problems to be Solved by the Invention) In view of the above-mentioned circumstances, this invention is an incline which is provided with a swingable support means in which a head capable of supporting a commercially available spare blade cartridge holder in a horizontally movable manner is provided on the head of the holder. When shaving and lowering the razor, the razor is swung to either the left or right due to the resistance of the shaving hair, and the cartridge head allows the cartridge to move laterally within the head in the direction of the shaving head, allowing the razor to be shaved diagonally. It is an object of the present invention to provide a diagonal safety razor having a configuration that allows the user to shave hair and automatically return to the original position when the resistance from the hair is removed.

[Structure of the idea]

(Means for solving the problem) In order to achieve the above-mentioned purpose, this invention uses a guide pin that protrudes from the center of the back of the cartridge holder, which can be moved laterally while contacting the head provided on the holder head. A connecting means is provided which is engaged with a guide pin that penetrates the wall of the head provided with a notched long groove that can be guided and projects from the back, and a spring that can be driven in conjunction with the rotation and lateral movement of the cartridge holder. This is a diagonal safety razor with a mechanism attached as a return means that can automatically return to the original position.

The head may be pivoted to a main shaft provided on the holder head so as to be swingable from side to side, or may be formed so as to protrude from the holder head. In the latter case, a structure is provided in which a guide pin capable of supporting the cartridge holder can rotate while being guided by a long notched groove provided in the wall of the head.

A lever arm having a fork-shaped lever into which a guide pin can be inserted is rotatably pivoted to the main shaft, or two A lever arm having a lever that can be inserted between the guide pins is formed, and a configuration is provided in which the arm at the other end is connected to a spring mechanism part to serve as a return means.
There is also a connecting means that is provided with a guide head having inclined guide surfaces on both sides that engage between two guide pins and allow the cartridge holder to move laterally as the head rotates.

Furthermore, when the head is formed to protrude from the holder head, a rack is provided on the holder head that engages with a pinion rotatably attached to the tip of the guide pin along with the cartridge holder, so that the holder can be moved laterally. In place of a combination of a rack and a pinion, a gear consisting of an outer diameter or inner diameter partial gear and a pinion, and a rack that is movable laterally by inserting the tip of the guide pin and rotating it laterally, are used. Some devices have a configuration in which a spring mechanism is attached to the meshing pinion to bias it and return it to its original position.

(Function) To explain the function and effect of this device, see Figures 4 and 5.
As shown in the action explanatory diagram in the figure, a holder head 2 is constructed of a holder head 2 which can be fitted with a cartridge holder 6 into which a commercially available replaceable blade cartridge K can be attached, and can swingably support a head 4 having a guide groove 5 that can be moved laterally. When the safety razor is taken down for shaving, it is swung to the opposite side to the side of greater resistance depending on the density of the beard hair, and the cartridge holder 6 is guided by the guide groove 5 of the head 4 and held in the same position. The replaceable blade cartridge K then shaves while moving diagonally. Therefore, due to the pulling principle, the apparent shaving angle is reduced, the shaving quality is improved, and the durability of the blade edge is also improved. At this time, the guide pin 9 protruding from the back surface of the cartridge holder 6 moves laterally along the long notched groove 11 formed in the wall 10 of the head 4 until it reaches the left or right groove end and stops.

For example, a fork-shaped lever 12 as shown in FIG. 4 is used as an engaging means at the tip of the guide pin 9.
was provided at one end and a guide pin 9 was inserted therein, and the support hole 13 serving as the center of rotation was fixed to the shaft head of the main shaft 3 which was pivoted to the holder head 2, and was fixed to the side end of the main shaft 3. One end of the tension helical spring 21 is fixed to the tip of the arm 15 of the lever arm 14, which rotates the lever 12 in conjunction with the rotation of the head 4.The other end of the tension helical spring 21 is fixed to the handle 17 of the holder, and the lever arm 14
Automatic return is possible by means of a return means configured to always urge the device to return to its original neutral position. Furthermore, since the length of the spring 21 is fixed to the holder handle 17 by a set screw 20 whose length can be adjusted, the shaving quality can be optimized by adjusting the amount of diagonal movement of the head 4 according to the strength of beard hair, etc. can be made into

(Example) An example of this invention will be described below based on the drawings.

1 to 3 show a first embodiment of the oblique safety razor 1 of this invention. The cartridge holder 6 is fitted into a guide groove 5 provided in a head 4, which is fixed to a main shaft 3 mounted on the holder head 2 and pivoted so as to be tiltable from side to side. It is formed so that it can be easily moved on upper and lower V-shaped grooves 8 formed in the guide groove 5 via a bearing 7 or a low-friction sliding plate. The guide pin 9 protruding from the center of the back of the cartridge holder 6 is connected to the wall 1 of the head 4.
It is formed so as to be movable along the notched long groove 11 formed at 0 to the left and right groove ends. The tip of the guide pin 9 is held between a fork-shaped lever 12 and the support hole 13, which is the center of rotation thereof, is fixed to the shaft head of the main shaft 3, and the rotation of the head 4 fixed to the tip of the main shaft 3 is fixed. The lever 12 is rotated in the same direction in conjunction with the movement,
As the guide pin 9 that engages with the guide pin 9 moves, the stop pin 16 fixed to the tip of the arm 15 of the swingable lever arm 14 is inserted through the rotation notch 18 provided in the holder handle 17 and protrudes inside. A helical spring 21 is fixed to a set screw 20 that can be freely adjusted and screwed into an adjustment slot 19 formed in the longitudinal direction of the holder and provided between the tip of the spring and the intermediate part of the holder handle 17.
The lever arm 14 is always held at the holder handle 1.
The cartridge holder 9 and the head 4 can be automatically returned to their original positions by the spring force applied by the swing movement of the cartridge holder 9 and the head 4 through the guiding pin 9 which is held on the longitudinal center line of the cartridge holder 7 and held therebetween. It is composed of

In FIG. 2, a cartridge holder 6, which has a sheath-shaped groove S formed on its side into which a commercially available spare blade cartridge K can be inserted, is moved laterally into the guide groove 5 of the head 4 via a ball bearing 7 or a low-friction sliding plate. Indicates that it is inserted freely. Also, depending on the type of the replaceable blade cartridge K, different attachment means are formed on the cartridge holder so that it can be attached. Further, as shown in FIG. 3, the main shaft 3 mounted on the holder head 2 has its tip secured to a support hole 22 provided at the lower center of the head 4, and a lever arm 14 is attached to the shaft head on the other side. The support hole 13 is fixed and pivotably supported so as to be tiltable. Therefore, when the head 4 to which the cartridge holder 6 is attached is tilted, the lever arm 14 is also tilted at the same time, and the cartridge holder 6 is moved along the inclination angle of the head 4 so that the lever arm 14 is tilted by the same angle as the head 4. The cutting edge of the cartridge can be moved diagonally by being guided by the guide groove 5 of the head 4 through the guide pin 9 which is inserted into and engaged with the cartridge and moving in the same direction.

Figure 6 shows the second side of the oblique safety razor 1 of this invention.
This embodiment is different from the first embodiment in that the shape of the lever arm 23 made of an elastic body is such that the left and right ends of the arm 15 project downward from the support hole 13 which is the center of rotation of the lever arm 23 and are turned inward. Left and right locking arms 24, 24' shaped like hooks are provided in parallel with the central arm 15 and protrude, and a locking step portion 26 is provided at the tip of which the locking piece 25 facing inward can be struck from both sides.
is provided on the longitudinal center line of the holder head 2 to follow the lateral movement of the guide pin 9, and as the lever 12 inserted therein is rotated to the left, the left locking arm 24 of the lever arm 23 moves to the locking step. 26 and the rotation is restrained at the base of the locking arm 24, thereby accumulating the bending moment, while the right locking arm 24' separates from the locking step 26 and rotates to the left together with the lever arm 23. do. On the other hand, when the lever 12 is rotated to the right, the right locking arm 24' is locked to the locking step 26 to store energy and automatically return to its original position. Therefore, the structure is simpler than that of the first embodiment. 7 and 8 show a third embodiment and a fourth embodiment of the oblique safety razor 1 of this invention. In both of these, two guide pins 9 protruding from the back side of the cartridge holder 6 are arranged in parallel in the center, and a support hole 13 of a lever arm 28 is provided at one end with a tongue-shaped lever 27 that can be inserted between them. A seventh arm 29 is fixedly fixed to the shaft head of the main shaft 3 and is connected by simultaneous rotation of the head 4 and the lever arm 28, and an arm 29 formed from a spring plate on the side opposite to the lever 27 of the lever arm 28. In the third embodiment shown in the figure, a notch groove 31 is provided at a distance from the holder handle 17 so that left and right plate-like free ends can be formed above the holder handle 17 in the form of left and right plates bent outward. The tip of the arm 29 of the lever arm 28 is inserted between the left and right locking pieces 30, 30', and is engaged with the movement of the guiding pin 9. The bending moment generated at the base of the spring plate that collides with the base of the arm 29 and forms the arm 29 is stored and automatically returns to the original position. Further, as the lever 27 rotates clockwise, the tip of the arm 29 hits the base of the left locking piece 30', creating an opposite bending moment at the base of the arm 29.

In the fourth embodiment shown in FIG. 8, the left and right locking pieces 32, 32' provided on the holder handle 17 into which the arm 29 of the lever arm 28 formed from the spring plate is inserted are connected to the left and right locking pieces 32, 32'. 30 and 30', a lever 27 is provided with a notch groove 33 between it and the holder handle so that a free end can be formed downward, and the tip of the arm 29 is rotated as the guide pin 9 moves. It hits the tip of either of the left and right locking pieces 32, 32' on the opposite side to the direction of rotation of the left and right locking pieces 32, 32', and pushes it open downward while resisting the elasticity of the left and right locking pieces 32, 32'. A bending moment is generated at the base of the arm 29 to store energy so that the arm 29 can automatically return to its original position.

Next, FIGS. 9 and 10 show a fifth embodiment of the oblique safety razor 1 of this invention. FIG. 9 shows two guide pins 9 on the left and right protruding from the back of a transversely movable cartridge holder 6 which is fitted into a swingable head 4. The head 4 is supported by a main shaft 3 provided on the holder head 2. When the head 4 is pivoted to the left as shown in FIG. The holder head 2 serves as an alternative transverse guide means for the head 4.
The guide head 34 attached to the guide head 34 is formed to have a ladder-shaped outer contour, and the left and right slopes 35, 3
Two guide pins 9 protruding from the cartridge holder 6 along the slope formed by 5' and the top surface adjacent to each other are arranged in parallel at intervals of the guide pins 9 that can be guided laterally, as shown in FIG. When the guide pin 9 on one side descends down the slope 35 from the horizontal position where it makes point contact with the opposing slopes 35 and 35', for example to the horizontally inclined position shown in FIG. The notched long groove 1 is formed so as to rise on the surface, and is guided laterally along the notched long groove 11 provided in the wall body as the head 4 rotates to either the left or right side.
The cartridge holder 6, which is tilted to the groove end of 1, is moved sideways to enable diagonal movement. A leaf spring 36 is provided on the holder handle 17, which can be biased by the rotation of the head 4, so that it can automatically return to its original position.

Next, Figures 11 and 12 show the sixth part of this invention.
An example is shown. The head 4 is formed to protrude from the holder head, and serves as a wall 10. The cartridge holder 6 on which the replaceable blade cartridge K is mounted is slidably abutted on the side surface, and a guide pin 9 is provided protruding from the center of the back surface of the cartridge holder 6.
A pinion 37 is fixed to the tip of a guide pin 9 passed through a wall 10 having a long notched groove 11 through which the guide pin 9 can be inserted and guided, so that it can rotate with the tilting of the cartridge holder 6. A rack 38 that engages with the lower part of the pinion 37 is provided in the holder head 2 parallel to the long notched groove 11, and a bent end of a scissor-like leaf spring into which the tip of the guide pin 9 can be inserted. A spring mechanism section 39 is provided by attaching this to the holder handle section 17.

Therefore, while tilting, the cartridge holder 6 rolls in the same direction as the tilting direction along the rack 38 that is guided by the long notched groove 11 of the wall body 10 and engages with the rotation of the pinion 37 attached to the guide pin 9. This provides a means for automatically returning to the original position by means of a traverse guide means and a leaf spring which is biased by the movement of the guide pin 9.

Next, FIG. 13 shows a seventh embodiment of this invention.

In this case, the difference from the previous embodiment is that instead of a rack that meshes with the pinion 37, an outer diameter partial gear 40 is used.
Therefore, the notch guide groove 41 of the wall body 10 is formed in a partially arc shape.

FIG. 14 shows an eighth embodiment of this invention. This is achieved by using an inner diameter partial gear 42 instead of the outer diameter partial gear 40 of the previous example. Therefore, the wall 10
The center of the circle of the notched guide groove 43 formed in a partially circular arc shape is the same as that of the inner diameter partial gear 42, and is therefore located on the center line on the opposite side to the holder handle 17.

FIGS. 15 and 16 show a ninth embodiment of this invention.

The head wall 10 is provided with a partially arc-shaped cutout guide groove 44 that can guide the guide pin 9 protruding from the center of the back surface of the cartridge holder 6, and is provided protruding from the holder head 2 to guide the guide pin 9 through the cutout. A rack 45 is provided with a straight notched long groove 46 that abuts on the back of the wall 10 penetrated by the groove 44 and that fits into a square shaft provided at the tip of the guide pin 9 so as to be tiltable together with the cartridge holder 6. The rack 4 is provided with a rack 4 that can be tilted while sliding the guide pin 9 inside the notched long groove 46 in order to guide the cartridge holder 6 laterally.
5 is rotatably supported on the holder head 2, and a tension spring 48 is elastically mounted between a stop pin provided on the inner peripheral side surface of the pinion 47 and a stop pin provided on the holder handle 17. In addition to holding the rack 45 together with the cartridge holder 6 in a neutral position, the cartridge holder 6 is tilted relative to the inclined guide surfaces of guides 49 which are protruded from opposite right and left ends of the back surface of the wall 10 at appropriate positions. External cams formed on both left and right ends of the rack 45, which is rotated accordingly, tilt the rack 45, which has hit the guide 49, while guiding it with the external cam.
5 is laterally moved in its longitudinal direction, the tilting of the cartridge holder 6 is caused to move toward the wall 10 via the guide pin 9.
It is limited to the groove ends of the cutout guide groove 44 provided transparently and is stopped at a predetermined left and right tilting angle. On the other hand, the pinion 47 that meshes with the rack 45 is rotated to bias the tension spring 48 and return it to its original position. FIG. 16 shows that as the cartridge holder 6 rotates, the rack 45 pushed by the guide 49 moves laterally in the lateral direction of the arrow in the notched long groove 46 into which the square part of the tip of the guide pin 9 is inserted. Therefore, the pinion 47 that meshes with this rotates in the direction of the arrow and is biased by the elastic tension spring 48.

[Effect of idea]

Since this invention has the above configuration, it has the following advantages.

(1) A cartridge holder to which a commercially available spare blade cartridge can be attached is moved laterally, and the head can be rotated according to the resistance of the beard hair, allowing the blade tip to move diagonally to enable shaving and shaving. The head and cartridge holder can be automatically returned to their original positions after being lowered and there is no longer any resistance, reducing the apparent angle of the cutting edge and improving the shaving quality.The durability of the upper cutting edge is also relatively improved. The effect of this is significant.

(2) It is highly effective to provide a safety razor with a simple structure and disposable blades that cuts well at low cost.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective explanatory view (front view) showing the first embodiment of the oblique safety razor of this invention, Fig. 2 is an explanatory side sectional view (side view) thereof, and Fig. 3 is an overall explanatory view ( Fig. 4 is an explanatory diagram of its head rotating operation (front view), Fig. 5 is an explanatory diagram of its diagonal action (front view), and Fig. 6 is a second implementation of the diagonal safety razor of this invention. Overall perspective explanatory diagram (front view) showing an example,
Fig. 7 is an overall perspective explanatory view (front view) showing the third embodiment, Fig. 8 is an overall perspective explanatory view (front view) showing the fourth embodiment, and Fig. 9 is an overall perspective explanatory view (front view) showing the fifth embodiment. FIG. 10 is an explanatory diagram of the functional part (front view) in the rotating position of the head, FIG. 11 is an overall perspective explanatory diagram (front view) of the sixth embodiment, and FIG. Fig. 12 is a cross-sectional explanatory view (side view) taken along the line A-A' in Fig. 11, Fig. 13 is an explanatory view (front view) of the operation and function of the seventh embodiment, and Fig. 14 is an illustration of the operation of the eighth embodiment. Fig. 15 is an explanatory diagram of the functional parts (front view) of the ninth embodiment, and Fig. 16 is an explanatory diagram of the functional parts in the cartridge rotating position from Fig. 15 (front view). ). Explanation of symbols of main parts, 1... Oblique safety razor, 2... Holder head, 3... Main shaft, 4... Head, 5... Guide groove, 6... Cartridge holder, 9... Guide pin , 10...Wall body, 11...Notched long groove, 12...Lever, 13...Support hole, 14
... Lever arm, 15 ... Arm, 17 ... Holder handle, 27 ... Lever, 28 ... Lever arm, 29 ... Arm, 30, 30' ... Left and right locking pieces, 34 ... Guide head, 35, 35'... Left and right slope, 36... Leaf spring, 37... Pinion, 3
8... Rack, 39... Spring mechanism part, 40... Outer diameter partial gear, 41... Notch guide groove, 42... Inner diameter part gear, 43... Notch guide groove, 44... Notch guide groove , 45...Rack, 46...Notched long groove, 47...Pinion, 48...Tension spring, 49
...Guide, K...Replacement blade cartridge.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The head 4 is in contact with a head 4 which is supported by a main shaft 3 mounted on the holder head 2 and can be tilted from side to side.
A tilting support means for a cartridge holder 6 which is fitted in a guide groove 5 provided in the cartridge so that it can move laterally, and a wall 1 of a head 4 having a long cut groove 11 formed therethrough.
A lever arm 14 is attached to the shaft head of the main shaft 3, and a lever arm 14 is provided on one side with a lever 12 that can be tiltably engaged at the tip of a guide pin 9 that protrudes from the center of the back surface of the cartridge holder 6 that passes through the cartridge holder 6 at the rear. A traversing guide means for the cartridge holder 6 that is pivotably supported and can be traversed along the guide groove 5 via a lever 12 in the same direction as the tilting direction of the cartridge holder 6; and an arm provided on the other side of the lever arm 14. 15
A diagonal safety razor characterized by having means for automatically returning the cartridge holder 6 to its original position by interposing a spring member that can be elastically loaded on the holder handle 17. (2) A lever 12 formed in a fork shape into which the guide pin 9 can be inserted and engaged is fixed to the shaft head of the main shaft 3 using the support hole 13 of the lever arm 14 provided on one side as a fulcrum, and the lever 12 is fixed to the shaft head of the main shaft 3. A transverse guide means for the pin 9 moving in the same direction as the tilting direction, and an arm 1 provided on the other side of the lever arm 14.
5 and the holder handle portion 17, the skew safety razor has a return means equipped with a spring mechanism that connects the holder handle portion 17 to the holder handle portion 17. (3) Two guide pins 9 are arranged side by side, and the shaft head of the main shaft 3 is set at the support hole 13 of the lever arm 28, which has a tongue-like lever 27 on one side that can be inserted into the gap and engaged. Cartridge holder 6
Claim No. (1)
Diagonal safety razor as described in section. (4) Arm 29 provided on the other side of lever arm 28
is formed from a plate-shaped spring, and has a return means provided with a spring member inserted between left and right locking pieces 30, 30' made of an upwardly opening elastic body provided on the holder handle 17 and elastically loaded. A skew safety razor as set forth in claim (1) of patent registration.