JPH0693939B2 - Safety razor - Google Patents

Description

TECHNICAL FIELD The present invention relates to a safety razor in which a blade mounting member can be tilted in the width direction of the blade.

[Prior Art] A conventional safety razor of this type is described in Japanese Utility Model Laid-Open No. 62-69980. About this safety razor
This will be described with reference to FIGS.

As shown in FIGS. 26 and 27, a guide plate 51 is provided on the upper portion of the handle 50 so as to be tiltable in the width direction of the blade K, and the guide plate 51 is provided with a long groove 52 extending in the lateral direction. There is. And the guide plate
A blade body mounting member 53 for blade mounting is provided so as to be slidable laterally along the blade 51, and a guide pin 54 is projectingly provided at the center of the blade body mounting member 53. The guide pin 54 is slidable in the long groove 52, and its tip end is linked with a restoring means R for restoring the blade mounting member 53 to its original position when tilting and sliding.

That is, as shown in FIG. 28, the blade mounting member 53 is movable left and right with respect to the handle 50, and the blade mounting member 53 is also movable.
The guide plate 51 itself that guides the right and left 53 is tiltable in the width direction of the blade body K, and can be restored to the original position from any movement state.

[Problems to be Solved by the Invention] However, in the above safety razor, as shown in FIG. 28, the blade mounting member 53 itself laterally traverses along the guide plate 51, so that the blade mounting member 53 during use is in use. And the relationship between the handle and the handle 50 are not constant. That is, the blade mounting member 53
The left and right ends of the upper blade did not always protrude from the upper part of the handle 50 in the left-right direction by the same length. For example, when the guide plate 51 tilts to the left, the blade has a protrusion length to the left of the handle 50 that is longer than the protrusion length to the right, and conversely, when the guide plate 51 tilts to the right, it moves to the right. The projecting length of was long.

Therefore, there is a drawback that the user cannot easily grasp the left and right positions of the blade body K during use, which makes it difficult to use.

Therefore, in the present invention, by solving the above problems, the blade body mounting member is tiltable in the width direction of the blade body, and further, the position of the blade body with respect to the handle during use is not changed, so that it is easy to use. The purpose is to provide a safe razor.

[Means for Solving the Problems] In order to achieve the above object, a first aspect of the present invention is configured such that a blade mounting member to which a blade is mounted is supported by a supporting shaft with respect to a head portion at the upper end of a handle with the supporting shaft as a center. The blade body is supported so as to be tiltable in the width direction of the blade body and immovable in the length direction of the blade body, and the blade body mounting member is always provided between the blade body mounting member and the head portion in a handle and T-shape. The gist is that the restoring means for biasing and holding the original position before tilting is interposed.

In the second invention, a leaf spring is used as the restoring means,
The gist is that the central portion of the leaf spring is attached to the head portion, and both ends are engaged with the blade attachment member at positions apart from the support shaft.

According to a third aspect of the invention, a blade mounting member is mounted on a support shaft, the support shaft is rotatably supported in a shaft hole provided in the head portion of the handle, and a spring acting as a restoring means on the support shaft. The gist is to provide inside the handle.

[Operation] In the first invention, when no resistance is applied to the blade body on the blade body mounting member during use, the blade body mounting member and the handle are T-shaped, and the blade body mounting member is Although not tilted in the width direction, when there is a difference in resistance applied to the left and right ends of the blade body, the blade mounting member tilts in the width direction of the blade body about the support shaft due to the difference in the force. At this time, the positional relationship of the blade mounting member with respect to the handle does not change in the length direction of the blade. Then, when the resistance difference disappears, the inclined blade body mounting member is restored by the restoring means, and the blade body mounting member and the handle return to the original positional relationship.

Further, in the second invention, the direction in which the elastic force of the leaf spring acts and the tilting direction of the blade attachment member coincide with each other. Further, the force of tilting of the blade attachment member is transmitted to the leaf spring at a position away from the support shaft, and the leaf spring is bent.

In the third invention, the restoring force of the spring as the restoring means acts on the support shaft that rotates in the shaft hole as the blade mounting member tilts.

[Embodiment] The first to sixth embodiments of the present invention will be described below.
It will be described with reference to the drawings.

As shown in FIGS. 1 and 2, a head portion 1a extending in the left-right direction is formed at the upper end of the handle 1, and a shaft hole 2 is formed in the center portion in the left-right direction.
Is provided. A pair of accommodating holes 3a are provided on both left and right sides of the coaxial hole 2, and a mounting groove 4 is formed so as to connect both accommodating holes 3a immediately before the shaft hole 2.

Main body 6 of blade attachment member 5 provided on the head portion 1a
On the lower surface, a shaft hole 7 corresponding to the shaft hole 2 is provided at the center in the left-right direction, and on the upper surface of the main body 6, a through hole 8 communicating with the shaft hole 7 is provided.

A lower half portion of a columnar support shaft 9 is inserted into the shaft hole 2 on the head portion 1a, and the support shaft 9 is screwed and fixed by a screw 1b inserted into the head portion 1a from below. There is. The upper half of the support shaft 9 is inserted in the shaft hole 7 of the blade mounting member 5 so as to be capable of relative tilting, and the upper end of the support shaft 9 is screwed from above through the through hole 8 of the blade mounting member 5. Is screwed in.
The screw 10 prevents the blade body mounting member 5 from coming off from the support shaft 9 and allows the blade body mounting member 5 to tilt with respect to the support shaft 9. On the lower surface of the main body 6,
A pair of accommodating holes 3b are provided so as to correspond to the pair of accommodating holes 3a on the head portion 1a.

A leaf spring 11 is interposed between the main body 6 and the head portion 1a, and the leaf spring 11 acts as a restoring means for returning the blade attachment member 5 to its original position when the blade attachment member 5 tilts.

The leaf spring 11 extends in the left-right direction, and as shown in FIGS. 3 and 4, the fixing portion 12 located in the center of the left-right direction, and slightly rearward (downward in FIG. 4) from both left and right ends of the fixing portion 12. A pair of elastic portions 13 formed so as to project obliquely to the front side (upward in FIG. 4), and a pair of engaging portions 14 formed by bending the tips of both elastic portions 13 rearward. Has been done. Further, the tip ends 13a of the elastic portions 13 are bent upward, so that the bending portions 14 are located above the fixing portion 12. The fixed portion 12 is inserted and fixed in the mounting groove 4 of the handle 1, and both elastic portions 13 are moved back and forth in both accommodation holes 3a of the handle 1 as shown in FIGS. It can be accommodated. The distal end portions 13a of the elastic portions 13 are accommodated in the accommodation holes 3b of the blade mounting member 5, and the engaging surface 14a on the front surface of the engaging portion 14 (the upper surface in FIG. 4).
Is engaged with the inside of the accommodation hole 3b at a position away from the support shaft 9.

As shown in FIG. 1, the tips 15 are provided on both left and right sides of the main body 6.
a pair of support arms 15 in which a projects upward from the main body 6,
The shafts 15b are attached so as to be rotatable in the directions toward and away from each other. Both support arms 15 are constantly urged by springs 16 interposed between them and the main body 6 in a direction in which tips 15a approach each other, and the urging force causes the replaceable blade cartridge L to be supported in a sandwiched manner. It is like this.

As shown in FIG. 5, the safety razor of the present embodiment configured as described above has a solid line when there is no difference in the resistance applied to the left and right ends of the blade body K on the spare blade cartridge L during use. As shown by, the handle 1 and the blade mounting member 5 are T-shaped, and the blade mounting member 5 is not tilted in the width direction of the blade K, but due to the difference in beard density, thickness, etc. Blade K
When there is a difference in the resistance applied to the blade body mounting member 5, the blade body mounting member 5 tilts in the width direction of the blade body K due to the difference in the force, as indicated by the two-dot chain line. Therefore, it is possible to cut off and improve the shaving taste.

In this case, the blade mounting member 5 resists the elastic force of the leaf spring 11 and bends the elastic portion 13 of the leaf spring 11 to incline in the width direction of the blade K about the support shaft 9. If there is no difference in resistance applied to the blade body K of the inclined blade body mounting member 5, the restoring force of the leaf spring 11 bent by the tilting of the blade body mounting member 5 causes the engaging portion to move.
The front surface 14a of 14 transmits the blade body mounting member 5 and returns it to the original position again. When the blade body mounting member 5 tilts, the tilting occurs only around the support shaft 9, so that the blade body mounting member 5, that is, the blade body K, is different from the conventional example even in the tilted state, and is always above the handle 1. The same length in the left-right direction. Therefore, the left and right positions of the blade body K are easily grasped, and this safety razor is easy to use.

In addition, both ends of the leaf spring 11 are connected to both accommodation holes 3b of the blade mounting member 5.
The direction in which the elastic force of the leaf spring 11 acts coincides with the tilting direction of the blade mounting member 5, that is, the blade K.
Therefore, the leaf spring 11 is easily bent, and the blade body mounting member 5
Is smoothed, and the blade body mounting member 5 is smoothly restored to its original position by the restoring force of the leaf spring 11. Further, since the leaf spring 11 is engaged with the blade attachment member 5 at a position apart from the support shaft 9, the blade K responds to a slight difference in resistance applied to the blade K, and the blade K reacts to the resistance. Tiltability is also improved.

Since the leaf spring 11 is completely housed inside the head portion 1a and the blade mounting member 5 and is not exposed to the outside, it has an excellent appearance.

Next, another example of the first embodiment will be described with reference to FIG.

In the safety razor of this another example, instead of the support shaft 9 in the first embodiment, a support shaft 9a is used which is formed so as to be bent rightward at the intermediate portion and then extends upward again. The shaft hole 7 of the blade mounting member 5 is provided in the right part. The head portion 1a and the blade mounting member 5 are provided with accommodating holes 3a and 3b only in the left portion. Only the left elastic portion 13 is formed on the leaf spring 11a, and the elastic portion 13 has a front end portion 13a that bends forward and a front end portion 13a that bends rearward. Both engagement surfaces 14a are engaged with both front and rear surfaces inside the accommodation hole 3b. In the safety razor configured as described above, when the blade body mounting member 5 is inclined due to the resistance difference applied to the right and left ends of the blade body, the left side portion of the blade body mounting member 5 may be inclined more than the right side portion. Has become. Even in such a case, the blade body protrudes from the upper portion of the handle 1 in the left-right direction by the same length, so that the left-right position of the blade body can be easily grasped.

A second embodiment of the present invention will be described with reference to FIGS.

As shown in FIGS. 8 and 11, a back circular head portion 1c is fixed to the rear side of the handle 1 by a screw 17 screwed into the handle 1 from the front side. A shaft hole 2 is formed in the upper surface of the head portion 1c, and the lower end of the support shaft 9 is inserted and fixed in the coaxial hole 2 so as not to rotate. The blade mounting member 5 is attached to the upper end of the support shaft 9, and the blade mounting member 5 projects upward from the main body 18 into which the upper end of the support shaft 9 is inserted so that the upper end of the support shaft 9 can be tilted relative to each other. A pair of support arms 19 for attaching the replacement blade cartridge, a pair of operation knobs 19a for operating the support arms protruding below both support arms 19, and a pusher 120 located between both support arms 19. There is.

The body 18 of the blade mounting member 5 has a ring-shaped leaf spring 21.
The upper end of is fixed by a pair of screws 22 via a pressing plate 18a. The leaf spring 21 is located adjacent to the support shaft 9 and in front of it (to the right in FIG. 10).
21a is formed symmetrically about the support shaft 9.
The lower end of the leaf spring 21 is fixed by the screw 17 together with the head portion 1c between the handle 1 and the head portion 1c. The ring-shaped leaf spring 21 has elasticity to be twisted in the circumferential direction of the support shaft 9.

The upper and lower ends of the leaf spring 21 are fixed to the blade attachment member 5 and the handle 1, respectively, and the blade attachment member 5 tilts about the support shaft 9 against the elasticity of the leaf spring 21 in the width direction of the blade. It is possible.

When the blade mounting member 5 tilts, the tilting only occurs around the support shaft 9, so that the blade mounting member 5, that is, the blade body is different from the conventional example even in the tilted state. The same length in the left-right direction.
Therefore, the left and right positions of the blade body are easy to grasp, and this safety razor is easy to use. Further, in this embodiment, since the leaf spring 21 has a ring shape, when a difference in resistance applied to the left and right ends of the blade body occurs during use, as shown by a two-dot chain line in FIG. Leaf spring 21 due to the inclination of 5
The ring portion 21a is twisted in the circumferential direction around the support shaft 9 with the upper portion thereof fixed to the blade attachment member 5. In this case, since the leaf spring 21 has the ring portions 21a protruding to the left and right sides, the circumferential deformation of the support shaft 9 can be facilitated by utilizing the protruding portions to the left and right sides. Therefore, the inclination of the blade attachment member 5 also reacts to a slight difference in the resistance applied to the blade, and the inclination of the blade with respect to the resistance is also improved.

Both ring portions 21a of the leaf spring 21 in the second embodiment are
It may be formed by bending in a zigzag shape as shown in FIGS.

By doing so, the ring portion 21a of the leaf spring 21 is
When the blade attachment member 5 is twisted and twisted in the circumferential direction of the support shaft 9, the blade is easily deformed by extending the bent portion. Therefore, even if the difference in resistance applied to the blade body is small, the blade body mounting member 5 can be smoothly tilted.

Further, as shown in FIG. 14, not the leaf spring 21 but the leaf spring 21 as the restoring means for restoring the blade mounting member 5 to the original position before tilting.
The coil spring 23 may be used. The coil spring 23 is wound around the support shaft 9, and its upper and lower ends are fixed to the lower surface of the main body 18 and the upper surface of the handle 1, respectively. The coil spring 23 has an elastic force in the winding direction.

In this embodiment, when the blade mounting member 5 tilts,
The coil spring 23 is twisted around the support shaft 9, and the inclined blade body mounting member 5 returns to its original position by the restoring force of the twist.

Next, a third embodiment of the present invention will be described with reference to FIGS.

The handle 1 of this embodiment comprises a handle body 24 and a head portion 25 formed in an oblique shape on the upper end thereof. A storage hole 26 is formed inside the handle body 24, and an adjusting member 27 is inserted in the handle body 24 so as to be vertically movable and non-rotatable with respect to the handle body 24. A female screw portion 27a opening downward is formed in the adjusting member 27, and a hooking hole 28 is formed in the upper end of the adjusting member 27. An adjusting screw 29 is screwed into the female screw portion 27a of the adjusting member 27 from below, and the lower end of the adjusting screw 29 is attached to the handle body 24.
It protrudes downward through the lower part of. Then, an adjusting knob 30 for rotating the adjusting screw 29 is attached to the protruding portion.

Then, the adjusting member 27, the adjusting screw 29, and the adjusting knob 30.
The screw adjusting portion 31 is configured by.

A shaft hole 32, which opens at the upper end of the housing hole 26, is formed in the head portion 25 at a position corresponding to the housing hole 26 of the handle body 24 in the front-rear direction. The front end (left end in FIG. 17) is open, and the rear end (right end) is cap 25a.
Is attached. A support shaft 33 is rotatably inserted in the shaft hole 32, and a blade attachment member 5 is attached to a front end protruding portion of the support shaft 33. Since the support shaft 33 is rotatable within the shaft hole 32, the blade mounting member 5 can tilt in the width direction of the blade.

The support shaft 33 has a substantially central portion located above the storage hole 26, and as shown in FIG. 16, is cut and formed as a plate-like hooking portion 34, and a lower portion thereof is shown in FIG. As shown in FIG. 5, a hook hole 34a is provided. Locking hole 34a and the adjusting member
The upper and lower ends of the coil spring 35 are hooked in the hooking holes 28 on 27 at the original position before the tilt in which the blade mounting member 5 and the handle 1 form a T shape. The coil spring 35 is a restoring means for the blade mounting member 5, and its vertical elastic force is used.
That is, the coil spring 35 is pulled upward when the support shaft 33 rotates, and works to return the support shaft 33 to the original position.

In the third embodiment constructed as described above, the blade mounting member 5 is inclined to the right as shown by the solid line in FIG. 19 due to the resistance difference applied to the left and right ends of the blade during use. On the contrary, when the upper end of the coil spring 35 is inclined obliquely to the upper left as shown by the chain double-dashed line, the upper end of the coil spring 35 is also pulled obliquely upward to the right or obliquely upward to the left. When the difference in resistance applied to the blade is eliminated, the elastic force of the coil spring 35 returns the blade mounting member 5 to the original position.

When the pulling force of the coil spring 35 is adjusted by rotating the adjusting knob 30 to change the vertical position of the adjusting member 27,
The strength of the restoring force of the coil spring 35 can be adjusted,
As a result, the restoring force of the blade mounting member 5 to the original position can be adjusted.

Further, since the entire coil spring 35 is protected by the handle body 24, it is durable and less likely to be damaged.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. In this embodiment, unlike the third embodiment in which the plate-like hooking portion 34 is formed with respect to the substantially central portion of the support shaft 33 which is rotatable in the shaft hole 32, the storage hole 26 in the storage hole 26 is formed. A spring mounting portion (36) protruding upward is formed so as to project, the lower portion of the handle body (24) is a solid body, and the upper surface thereof is a spring locking portion (37). A coil spring 35 as a restoring means is interposed between the spring locking portion 37 and the lower end of the spring mounting portion 36. The tensile force of the coil spring 35 is used.

The safety razor of this embodiment has a support shaft 33 when the blade mounting member 5 tilts during use as shown in FIG.
The lower part of the spring mounting portion 36 also tilts left and right around the support shaft 33 as the center rotates, but the tilted spring mounting portion 36 is pulled by the coil spring 35 and returns to its original position.

In this embodiment as well, the handle 1 may be provided with the screw adjusting portion 31 to adjust the pulling force of the coil spring 35.

Finally, a fifth embodiment of the present invention will be described with reference to FIGS.

In this embodiment, as a restoring means, a pair of parallel plate springs 38 are provided on the handle body 24, and a plate-shaped spring engaging portion 39 located between the both plate springs 38 is provided from the substantially central portion of the support shaft 33. It is protruding.

In this embodiment, as shown in FIG. 25, when the blade engaging member 5 is inclined and the spring engaging portion 39 is inclined about the support shaft 33, one of the spring engaging portions 39 is Bend the leaf spring 38. Then, the restoring force of the leaf spring 39 is transmitted to the spring engaging portion 39, and the blade body mounting member 5 is inclined.
To the original position.

In this embodiment as well, a blade adjusting part 31 is provided in the handle 1, and the vertical position of both leaf springs 38 is changed to adjust the contact position with the lower end of the spring engaging part 39 up and down, thereby attaching the blade body. It is also possible to adjust the restoring force of the member 5.

[Effects of the Invention] As described in detail above, in the first invention, when a difference occurs in the resistance applied to the left and right ends of the blade body during use, the blade body mounting member causes the blade body to center around the support shaft. The shaving taste is improved by tilting in the width direction of the blade, while when the resistance difference disappears, it can be automatically restored to the original position before tilting by the restoring force of the restoring means. Even when the member is tilted, the positional relationship of the blade body with respect to the handle in the length direction of the blade body does not change, and therefore, the excellent effect that the position of the blade body is easy to grasp and easy to use is exhibited.

In addition, in the second aspect of the invention, the leaf spring is easily bent, the tilting of the blade body mounting member is smooth, and the blade body mounting member is smoothly restored to its original position by the restoring force of the leaf spring. Produce an effect.

Further, it has an excellent effect of reacting to a slight difference in resistance applied to the blade body and improving tiltability of the blade body with respect to the resistance.

According to the third aspect of the invention, the spring is protected by the handle, so that the spring is less likely to be damaged and has an excellent effect.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view of a first embodiment embodying the present invention, FIG. 2 is a perspective view of a blade mounting member, and FIG. 3 is a rear view showing a mounted state of a leaf spring. FIG. 5 is a plan view of the leaf spring, FIG. 5 is a front view of the safety razor of the first embodiment, FIG. 6 is a right side view of the same, and FIG. 7 is a partially exploded perspective view of another example of the first embodiment. FIG. 8 is a rear view of the safety razor of the second embodiment, FIG. 9 is a partial front view of the same, FIG. 10 is a left side view of the same, and FIG. 11 is a sectional view taken along the line AA of FIG. 12
FIG. 13 is a partial rear view of another example of the second embodiment, FIG. 13 is a partial side view of the same, FIG. 14 is a partial front view of another example of the second embodiment, and FIG. 15 is a third embodiment. Side view of a safety razor,
FIG. 16 is a plan view of the same, FIG. 17 is a sectional view taken along the line BB of FIG. 16, and FIG. 18 is a schematic rear view showing a normal state of the blade mounting member of the safety razor of the third embodiment. 19 is a schematic rear view showing the blade mounting member in a tilted state, FIG. 20 is a sectional view of the safety razor of the fourth embodiment, and FIG. 21 is a schematic rear view showing the blade mounting member in a normal state. FIG. 22 is a schematic rear view showing the tilting state of the blade mounting member, FIG. 23 is a sectional view of the safety razor of the fifth embodiment, and FIG. 24 is a normal state of the blade mounting member. FIG. 25 is a schematic rear view showing a tilted state of the blade mounting member, FIG. 26 is a perspective view of a conventional example, FIG. 27 is a sectional view, and FIG. 28 is a blade mounting. It is explanatory drawing which shows the movement state of a member. Handle 1, heads 1a, 1c, 25, blade mounting member 5, support shafts 9, 3
3, shaft hole 32, springs 11, 35, 38, blade body K.

Claims (3)

[Claims] 1. A blade body mounting member (5) to which a blade body (K) is mounted is supported by a support shaft (9, 33) with respect to the head portion (1a, 1c, 25) at the upper end of the handle (1). The blade body (K) is supported so as to be tiltable in the width direction of the blade body (K) and immovable in the length direction of the blade body (K), and the blade body mounting member (5) and the head portion are supported. Restoration means (11, 11a, 21) for constantly urging and holding the blade mounting member (5) between the (1a, 1c, 25) and the handle (1) in the original position before tilting, which is T-shaped. , 23,35,38), which is a safety razor. 2. A leaf spring (11) is used as the restoring means, the central portion of the leaf spring (11) is attached to the head portion (1a), and the blade is attached at both ends apart from the support shaft (9). Safety razor according to claim 1, characterized in that it is engaged with the member (5). 3. A blade attachment member (5) is attached to a support shaft (33), and the support shaft (33) is turned into a shaft hole (32) provided in the head portion (25) of the handle (1). A spring (35,3) that movably supports and acts as a restoring means on the support shaft (33).
8. A handle is provided inside the handle (1).
The listed safety razor.