KR200276579Y1 - Safety razor - Google Patents

Abstract

The present invention relates to a safety razor with improved function, in particular to replace the cartridge containing a plurality of razor blades freely detachably, giving homeostasis to the contact area and pressure distribution of the cartridge that is moved along the skin surface and interviewed Thus, even when abnormal pressure is applied to the cartridge, the technical idea of maintaining a predetermined cutting function can be performed while being sensitively swinging with a constant force without fear of skin damage.

Description

Safety razor

The present invention relates to a safety razor.

In particular, the present invention can be used to freely replace the cartridge containing a plurality of razor blade detachably, even if abnormal pressure is applied to the cartridge by giving homeostasis to the contact area and pressure distribution of the cartridge that is moved while interviewing it along the skin surface The present invention relates to a razor of improved function that allows a predetermined cutting function to be performed while being sensitively swinged with a constant force without fear of skin damage.

In addition, the present invention takes the form of a follow-up application for the Republic of Korea Patent Application No. 2000-35138 "shaver".

Japanese Patent Application Laid-Open No. 3-52,319, which is mentioned in the prior art of the above-mentioned patent application, firstly supports both support arms on both the left and right sides of the holder head so as to be pivotally supported by the shaft, and at the same time as the head of the holder between the support arms. Since the button is supported to allow elastic movement in the front and rear direction by the spring, when the button protrudes backwards, both support arms are closed together, whereas the button is pushed forward against the elastic force of the spring in which the button is installed. Mainly, both support arms are mutually actuated to be attached and detached from the cartridge, and the pusher is supported between the bent arms of both support arms protruding both the front and the outside of the holder head. It is pressed against the pressing surface of the cartridge and rotates along an angle with respect to the axes of both supporting arms.

However, if the closing force by the bending of both support arms entrained on the shaft of the cartridge both support arms is determined solely depending on the elastic force of the button spring, if the button is inadvertently pushed against the elastic force of this spring, both support arms There was a fear that the cartridge would break out due to the opening.

Japanese Patent Laid-Open No. 11-156068, proposed to correct the above problems, was designed and improved so that both support arms do not inadvertently be operated by ensuring the elastic force of the button spring using each conventional component as it is. To this end, it has a razor head and a holder for supporting it so that it can be oscillated, and by moving the operation part by the holder to rotate both support arms to open and close both support arms, and to make the head detachable to both support arms. In the cartridge, the pusher is movably supported with respect to the operating part, and an elastic body is supported between the operating part and the pusher, and the pusher is pushed by the head while the pusher is held close to the razor head by supporting the head with both supporting arms. The elastic force of the elastic body is generated between the operation portion and the two support arms It is configured to be transmitted to the closing force on both support arms via its linkage.

However, the above-described chargeable elective invention is fitted to both support holes in the center of the cartridge in order to achieve the opening and closing movement around the support shaft while both support arms are coupled to the head of the holder and the swing motion is performed around them. Both the support arms are opened and closed by the operation of the pusher, which is able to move back and forth for the elasticity of the cartridge, and the movement range of the cartridge swing has to be limited. The elasticity of the pusher and the two support arms are linked together at the same time as a single elastic body, which entails a mechanical force and an increase in frictional force. When the problem occurs in any one of the protrusions facing the front and rear of the cartridge can be implemented It includes the problem of not being able to.

In addition, the above-described cartridge configuration of each of the present invention is a razor blade; A cap encapsulating the razor blade; And a guard bar for skin protection. At this time, since pivot points for pivoting the cartridges are mostly placed in the center of the cartridges, there is a risk of skin damage caused by the blades in front of the pivot points when rotating in the reverse direction. As the pressure is transmitted to the skin without filtration, it contains a fatal flaw that it cannot cope properly with the condition of the user's skin, and also the pivot to prevent the increase of the force that the razor blade retracts when shaving according to the distribution of skin hair. Even if the point is set in the center of the guard bar, which is a somewhat downward position, if the pressure applied during shaving becomes abnormally large, the cartridge swinging around the pivot point will stop and in this case, the razor blade may get stuck in the skin and cause damage. As the problem emerges, there is a continuous solution for improvement. A situation that is required to.

Accordingly, the present invention improves the mounting structure of a cartridge having a displacement angle of sufficient fluidity range and a holder and a handle for supporting the cartridge so as to enable a sensitive and smooth operation along the skin surface and the curved surface. The elastic swing movement and the demounting operation of the reinforcement are performed by the star component which depends on each elastic body to provide the razor which guarantees the reliability of the product, improves durability and minimizes mechanical damage.

In particular, the present invention, even if the handle is pushed close to the skin by the user holding the handle, the force that the cartridge is pushed backwards due to the pressure pushed by the pivot point located on the front of the cartridge lower portion and the displacement proportional to this force It is possible to secure a sufficient flow width at an angle, and realizes the specificity that the skin contact surface and pressure, which maintains constant homeostasis despite various distributions of hair density, allow for safe and smooth shaving without damaging small protrusions on the skin. Its main purpose is to be established.

1 is a perspective view showing the assembled state of the handle, the head, the holder, the elastic operation unit and the cartridge in the present invention separated from each other.

Fig. 2 is a side cross-sectional view showing the assembled elastic operation section in the longitudinal direction, and showing a side view showing an operation relationship between the first and second pushers.

3 is an exploded perspective view of each of the elements for constructing the first pusher;

Figure 4 is a perspective view showing a coupled state of the elastic operation portion consisting of the assembly of the respective element.

Figure 5 is a bottom perspective view showing a state of engagement of the elastic operation portion.

Explanation of symbols on the main parts of the drawings

10: handle 20: head

30: elastic operation unit 40: fixing member

40a: hole 40b: guide groove

40c, 60b: elastic fixing protrusion 40d: fastening groove

50: first pusher 50a: stopper

50b: locking portion 60: second pusher

60a: pressing portion 60c: locking jaw

70: first elastic body 80: second elastic body

90 knob 90a support rack

90b: protruding jaw 100: holder

100a: rotating shaft 100b: coupling hole

100c: coupling piece 100d: cam surface

110: cartridge 110a: chapter groove

110b: thick meat

In order to achieve the above object, the present invention provides a safety razor comprising a razor head, an elastic operation unit, a holder, and a cartridge,

The pivot point between the cartridge and the handle is positioned in front of the lower part of the lower part of the cartridge based on the center line of the cartridge height to prevent skin damage by the razor blade.

The razor head forms mounting recesses and knob receptacles on the inner and outer surfaces thereof;

The elastic operation part seated in the mounting recess is elastically fitted to the first elastic body installed in the receiving hole and the fixing member for forming the guide groove and the elastic fixing protrusion on the upper and left and right sides of the receiving hole having the fastening groove. A first pusher having a separation preventing function, a second pusher placed in the guide groove with a pressing portion for forming another elastic fixing protrusion on the left / right and the knob fixed, and a second positioned between each elastic fixing protrusion Including an elastic body;

The holder coupled to the head is provided with a rotating shaft at both ends of the upper left and right and to form the engaging surface and the cam surface is given a restoring force by the first pusher;

The cartridge is characterized in that the cartridge is mounted / detached to the holder while forming a thick groove facing the second groove and the long groove formed in the rear end.

Shaver of the present invention will be more specifically reproduced through the following description with reference to the drawings.

1 is a separate assembly state of the handle, the head, the holder, the elastic control unit and the cartridge, the handle 10, which is given the handle function of the shaver of the present invention, some components so that the appropriate weight can be given in use. It is said that the heavy material (particularly, the metal material) is required, preferably to be assembled in the form of an insert along the longitudinal direction of the handle 10 in order to prevent the deformation of the handle 10.

At this time, the outer peripheral surface of the handle 10 may be assembled by adopting a soft rubber material to improve the feel and gripping during grip, through which heterogeneous harmony with the synthetic resin or metal can be realized. This creates a beautiful appearance of the shaver.

The razor head 20 refers to the more widely extended tip of the handle 10, and the pivot point and each component of the present invention, which will be described below, are positioned, mounted, and coupled through the head 20.

First, the head 20 is assembled to the upper and lower ends as the inner surface of the lower head 20 is connected to the mounting groove (20a) and the mounting groove (20a) toward the central portion of the mounting groove (20a) formed of a reinforcing rib. The pipeline 20b is provided, and the knob receiving opening 20c penetrates through the center of the outer surface of the upper head 20 so that the mounting recess 20a of the inside is exposed through the knob receiving opening 20c. do.

2, 3, 4, and 5 are perspective views showing the separation and coupling states of the elements constituting the elastic operation unit, respectively, as shown, the elastic operation unit 30 is assembled to allow a plurality of components to interwork with each other. It is largely divided into the fixing member 40 and the first and second pushers 50 and 60 and the first and second elastic bodies 70 and 80 and the knob 90.

The fixing member 40 is considered to be closely seated in the above-described mounting groove 20a, and forms a receiving hole 40a of a predetermined length in the longitudinal direction, and the top and left / right surfaces of the front face respectively. Extending to the outside, the center portion of the extended upper end is selected to cut the guide groove 40b, and the elastic fixing protrusion 40c is formed on the rear surface of the extended left and right surfaces.

At this time, the guide groove 40b is formed by setting a position slightly higher than the height of the fixing member 40 main body so that the locking step can be naturally formed by the height difference with the main body of the fixing member 40, and also accommodated. Selecting the bottom surface of the fixing member 40 so as to penetrate the ball 40a is provided with a fastening groove 40d formed in a predetermined length along the longitudinal direction of the receiving hole 40a.

In such a receiving hole 40a, a first elastic body 70 having a coil spring shape having sufficient elastic force is built in, and the first pusher 50 is elastically directed toward the pipe line 20b of the head 20. The fitting is a first pusher 50 is divided into a stopper (50a) protruding so that the position of the front and rear is wrapped toward the left / right and the bottom of the outer peripheral surface, the front is a rectangular shape, the tip is tapered, The rear surface of the stopper 50a maintains a circular shape in accordance with the shape of the storage hole 40a.

At this time, by partially cutting the lower end of the circular back portion, the engaging portion 50b having a shape protruding toward the lower portion is elastically provided integrally, and the engaging portion 50b is formed by the inner diameter of the receiving hole 40a. After being pushed inwardly, it is elastically restored and caught in the fastening groove 40d where the pressure is released after being introduced into the receiving hole 40a, thereby preventing the external detachment of the first pusher 50, and the stopper 50a. Due to this the immersion length of the first pusher 50 can be controlled.

The upper end of the fixing member 40, that is, the guide groove 40b is placed so that the second pusher 60 can be inserted in a slidable manner. The width of the second pusher 60 is the first pusher ( It is required to be the same as 50), and one side of the lower end by a height of the guide groove 40b from the upper end of the fixing member 40 by a predetermined length (as much as the maximum moving length of the second pusher) to the guide groove 40b. By positioning it, it is possible to control the movement length by the locking jaw of the main body of the fixing member 40, the tip of which maintains the tapered structure in the opposite direction to the first pusher (50).

The rear end of the second pusher 60 forms a pressing portion 60a having the same length and height as the left / right extending surface of the fixing member 40. The front left / right side of the pressing portion 60a is described above. Another elastic fixing protrusion 60b of the same shape facing the elastic fixing protrusion 40c is provided as if maintaining a pair, and the locking jaw 60c for fixing the knob 90 to be described later in the center of the plane. The center portion of the lower end of the pressing portion 60a is cut in the same semicircular shape along the curved upper end shape of the fixing member 40 so that the interference factor when the second pusher 60 is moved is excluded. Allowed for smooth movement.

Such elastic operation of the second pusher 60 may be possible by the coil spring-shaped second elastic body 80 disposed between each of the elastic fixing protrusions 40c and 60b, and the second elastic body 80 Maximum compression will be equal to the maximum travel length of the second pusher 60 as described above.

At this time, in the embodiment of the present invention, the second elastic body 80 is installed in a plurality of left / right, but it will be possible to install it in the singular, and if the elastic operation of the second pusher 60 can be possible, the second elastic body ( The mounting position of 80 may be sufficiently changed in the shaving process.

On the other hand, the knob 90 is to be closely coupled to the locking jaw (60c) of the pressing portion (60a) located directly from the outside from the outside through the knob receiving hole (20c) of the head (20). To this end, both the support racks 90a at the lower end of the knob 90 are immersed in the engaging jaw 60c and are elastically expanded to protrude elastically so that they can be firmly hooked to each other. To form.

In FIG. 1, the holder 100 may be preferably made of a solid metal material, and is rotatably coupled to the front of the head 20 on which the elastic manipulation unit 30 is assembled. The holder 100 is a pivot reference point for the swing operation of the cartridge 110 on the upper rear side to form a rod-shaped pivot shaft (100a) at both ends, the planar left / right coupling having a curved locking portion The ball (100b) is located, and extending the front surface of the coupling hole (100b) to form a plurality of coupling pieces (100c) integrally, so that the cam surface (100d) can be formed between the rotational shaft (100a) .

At this time, a first pusher 50 protruding toward the front of the head 20 through the conduit 20b is positioned between both the rotation shafts 100a of the holder 100, and the tapered tip and the cam surface 100d. The facing force is given to the restoring force to the stop position, through which the cartridge 110 containing a plurality of razor blades to maintain the configuration that is finally mounted on the holder 100.

Of course, the rotational force of the holder 100 is configured so that the elastic rotation in one direction by allowing a separate elastic means (for example, leaf spring or coil spring, etc.) closely placed between the head 20. It may be accompanied by a change in phase.

The cartridge 110 coupled to the holder 100 and swinging with respect to the pivot shaft 100a is consequently positioned such that the pivot shaft 100a, which is a pivot point, is positioned at the lower end (front) proper point of the cartridge 110. Large displacement angles and skin contact surface and pressure uniformity can be achieved.

Of course, the razor blade included in the cartridge 110 may be singular, so that the number is not particularly limited.

In addition, the cartridge 110 forms a long groove 110a in the longitudinal direction by selecting an intermediate portion of the rear end of the plane as a means for enlarging the coupling angle with the holder 100 and expanding the range of the rotation angle during the swing operation. The thick portion 110b is integrally provided by selecting the central portion thereof.

Under such a configuration, both coupling pieces 100c of the holder 100 may be fitted on the long groove 110a to maintain a close coupling state with each other, and at the same time, protrude toward the front of the head 20 through the conduit 20b. The reverse tapered surface of the tip of the second pusher (60), which faces the thick portion (110b), moves the second pusher (60) elastically in response to the operation of the knob (90), thereby strongly strengthening the thick portion (110b) after using the shaver. By pushing, the cartridge 110 can be detached.

Referring to the operation relationship of the present invention, the handle 10 and the holder 100 in the state where the elastic operation unit 30 is already mounted on the head 20 is separated from the cartridge 110 while maintaining the original coupled state. After the cartridge 110 is assembled and mounted for shaving, a simple and close assembly operation is performed by fitting both coupling pieces 100c of the holder 100 to the long groove as described in the above configuration. Can be achieved.

Thereafter, the cartridge 110 swings very sensitively and smoothly along the curved surface of the skin. The pivot point, which is the pivot shaft 100a of the cartridge 110, is located at the head 20, which is the center point of the cartridge 110, at the bottom of the cartridge 110. By rotating from the lower end by the rotational force of the combined holder 100, it is possible to overcome various cutting resistances according to the hair density and the curved surface of the skin with a constant force and pressure. The first pusher 50 is elastically swinging while supporting the holder 100, which responds sensitively due to the elastic operation of the elastic body, and is responsible for the cutting function of the hair without any skin damage.

That is, it is possible to perform a predetermined swing operation while maintaining a contact area and pressure corresponding to the curved surface of the skin constantly without causing a problem with the skin surface. Then, the cartridge 110 may be separated from the holder 100. In this case, the knob 90 of the upper end of the head 20 is pushed to the front, and accordingly, the second pusher 60, which has been retracted by the second elastic body 80, moves forward and the thick portion 110b of the cartridge 110 is moved. By pushing hard, the desired stripping operation can be carried out.

Therefore, the present invention significantly improves the trajectory of the cartridge moving in close contact with the fine skin condition and the curved surface, thereby maintaining the homeostatic properties of the friction area and pressure with the skin and abnormally applying pressure to the handle during shaving. As the cartridge retracts as it rotates, it prevents skin damage at the same time and the angle according to the restoring force to the original position is set in a very wide range, so that shaving can be freely done at a constant cutting pressure despite the various distribution of hair density. It maintains safety and smoothly and sensitively swings to enable hair cutting, while removing and removing cartridges can be performed reliably in continuous and repeatable operations without superior durability and mechanical interference. Can and To have a value on the conduct of assuring a stable use for a long time.

Claims (1)

In the safety razor which consists of a razor head, an elastic operation part, a holder, and a cartridge, The pivot point between the cartridge and the handle is positioned in front of the lower part of the lower part of the cartridge based on the center line of the cartridge height to prevent skin damage by the razor blade. The razor head forms mounting recesses and knob receptacles on the inner and outer surfaces thereof; The elastic operation part seated in the mounting recess is elastically fitted to the first elastic body installed in the receiving hole and the fixing member for forming the guide groove and the elastic fixing protrusion on the upper and left and right sides of the receiving hole having the fastening groove. A first pusher having a separation preventing function, a second pusher placed in the guide groove with a pressing portion for forming another elastic fixing protrusion on the left / right and the knob fixed, and a second positioned between each elastic fixing protrusion Including an elastic body; The holder coupled to the head is provided with a rotating shaft at both ends of the upper left and right and to form the engaging surface and the cam surface is given a restoring force by the first pusher; The cartridge is a safety razor, characterized in that the mounting / detachment to the holder while forming a thick groove facing the second pusher and the long groove formed in the rear end of the plane.