JPS59214481A - Hair cutter blade - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a hair cutter blade. [Background Art] A movable blade is connected to a fixed blade in order to remove hair debris stuck between the movable blade and the fixed blade or on the blade edge. Conventional examples that can be separated from each other are shown in FIGS. 1 to 1/X5.

In other words, l is a fixed plate, 2 is a fixed blade, 3 is a movable blade, 4 is a guide plate, 5 is a push-up spring, 6 is a pin, and 7 is a cleaning hook. In this state, a drive shaft (not shown) is fitted into the drive shaft fitting portion 8 of the guide plate 4 and reciprocated, whereby the movable blade 3 slides on the fixed blade 2. On the other hand, when cleaning, use the cleaning 7 with your finger P as shown in Figure 3.
When the claw 7 is pressed, the movable blade 3 rotates about the rear end 3a as a fulcrum, and the movable blade 3 separates from the fixed blade 2. Therefore, in this state, insert the cleaning brush A between the spaces and clean it.

However, this hair cutter blade has the disadvantage that it is necessary to hold down the cleaning hook 7 with one finger P during cleaning, which makes cleaning troublesome. Also, since the force of the finger P pressing down on the cleaning tool 7 during cleaning is not constant,
The tip of the movable blade 3 always moves up and down during cleaning. For this reason, the fourth
Figure and #! As shown in Fig. 5, the fitting part 10 of the guide plate 4 that positions and fits the tip end 9 of the push-up spring 5 is worn due to the back and forth and reciprocating movement of the push-up spring 5, which causes rattling. This has disadvantages in that the noise increases, the amplitude range of the movable blade 3 decreases, and the cutting quality deteriorates.

[Purpose of the invention]

Therefore, an object of the present invention is to provide a hair cutter blade that can be easily cleaned and that does not cause a decrease in cutting quality.

[Disclosure of the invention]

In the invention, the movable blade is pressed against the fixed blade by a push-up spring,
The separating means allows the movable blade to be separated from the fixed blade, the holding means maintains the separated state of the movable blade, and the releasing means returns the movable blade to the fixed blade. This is what I did. This eliminates the need to hold the movable blade in the open state with one hand as in the past, making cleaning easier.

Further, since the movable blade does not move unlike in the conventional case in the separated state, the fitting portion between the push-up spring and the guide plate does not wear out.

A hair cutter to which the first embodiment of the present invention is applied is shown in FIGS. 6 to 14. That is, 11 is motor 1
2 is a built-in housing, 13 is a switch, and 14 is a blade portion.The drive shaft 17 of an eccentric cam 16 attached to a motor shaft 15 protrudes from the tip of the blade portion 14, and a hair is attached to the tip of the blade portion 14. The cutter blade 18 is positioned by a positioning and retaining portion 19 and is detachably attached with a screw (not shown) or the like. This hair cutter blade] 8 is a fixed blade 22 attached to the heat seal boss 21 in the recess at the tip of the fixed plate 20.
The holes 23 are fitted, and they are fixed together by heat fusion of the heat seal boss 2J. The fixed blade 22 has movable blade sliding surfaces 25 and 26 on the front end, which is the cutting edge side, and the protrusion 24 on the rear end, and a movable blade fixing stepped surface 27 on the front edge of the sliding surface 25 on the rear end. A groove 28 is formed, and a return boss 29 is formed as a protrusion on the opposite side of the groove 28. The movable blade 30 has its front end and rear end on the cutting edge side in contact with the sliding surface 25, 26, but a guide plate 3] is placed approximately in the center of the upper surface of the movable blade 30 to prevent the guide plate 31 from locking. Movable blade 30Vc by hook 32
fixed in one piece. This guide plate 31 has a rectangular groove-shaped drive shaft fitting part 33 formed at a position corresponding to the installed end of the movable blade 30, and further has a cleaning hook 34 extending behind the movable blade 30.〇One side is fixed. A pin receiver 35 is provided at the rear end of the plate 20.
A pin 36 is installed on this, and a coil portion 38 of a push-up spring 37 is passed through the pin 36. Push-up spring 37
This is a wire spring formed into the shape shown in the figure.A U-shaped piece 39 formed at the center of the coil part 38 is placed against the fixing plate 20, and both end pieces 40 have a dogleg-shaped bent part 41 in the middle part. The guide plate 31 has a bending part 42 bent inwardly at its tip, and has a positioning fitting formed at the front end of the upper surface of the guide plate 31. The movable blade 30 is pressed into the fixed blade 22 by the torsion action of the coil part 38 while the U-shaped piece 39 supports the fixed plate 20 .

When this hair cutter blade is attached to the blade section 4, the drive shaft 17 is connected to the fitting section 33 of the guide plate 31 due to the dimensional relationship.
to fit. Therefore, when switch ]3 is turned on and motor]2 is activated, the rotation of the motor shaft 15 is caused by the eccentric cam.
6, the drive shaft J7 rotates within the rectangular groove of the fitting part 33, so that the guide plate 31 and the movable blade 3o work together to reciprocate left and right with respect to the fixed blade 22. do.

This is the state of use. At this time, the movable blade 30 contacts the fixed blade 22 with a predetermined pressure due to the screw spring action of the push-up spring 37, and the push-up spring 37
It is absorbed by the left and right swinging of both end pieces 40 and the bending and stretching action of the bending part 41.

On the other hand, when cleaning the blade edge, use the hair cutter blade.
4 and remove it from the cleaning hook 34 with your finger P as shown in Figure 12.
Press. At this time, as in the case of FIG. 3, the movable blade 30 rotates about the rear end corner edge 44 as a fulcrum and separates from the fixed blade 22. Furthermore, the cleaning hook 34 is pushed in the forward direction (toward the cutting edge) at the same time as the cleaning hook 34 is pushed. At this time, the bent portions 41 of both end pieces 40 of the push-up spring 37 are elastically deformed and extended, allowing the movable blade 30 to move forward. Then, by the tensile action of both end pieces 4o of the push-up spring 37, the rear end surface 45 of the movable blade 30 is locked to the stepped surface 270 corner green. the result,
The movable blade 30 is generated by the urging force in the closing direction due to the screw spring action of the push-up spring 37 and the tension action of both end pieces 40.
It is held at a position where the biasing forces in the opening direction are balanced, that is, for example, at the opened state position shown in FIG. 12. Therefore, in this state, the cleaning brush A can be inserted between the blade tips to clean the hair debris. On the other hand, to release the separated state of the movable blade 30, push down the movable blade 30 by pinching the cutting edges of the double-edged blades 22 and 30 as shown in FIG. At this time, since the sliding surface 46 of the movable blade 30 rotates about the return boss 29, the rear end corner edge 44 floats up, and when it rests on the rear end sliding surface 25 of the fixed blade 22, the both end pieces 40 The movable blade 30 slides to the original position (the position where the tension is removed) by the tension action, and is pressed against the fixed blade 22 by the screw action of the push-up spring 37.

With this configuration, it is not necessary to hold the cleaning hook 34 with one hand to maintain the open state of the movable blade 30, as in the conventional case, and cleaning becomes easier.

In addition, since the movable blade 30 does not move up and down in the open state as in the conventional case, there is no wear on the fitting part 33 due to the bent part 42 of the push-up spring 37, and there is no rattling, noise, or sharpness. There is no longer any decrease in Furthermore, it is easy to return to the original state. Further, the push-up spring 37 does not come off from the guide plate 31 during cleaning.

A second embodiment of the invention is shown in FIGS. 15 to 18. That is, a step surface 27a is formed on the front side of the rear end sliding surface 25a of the fixed blade 22a, a return #I47 that is continuous with the step bottom is formed on one side of the sliding surface 25a, and the sliding surface 25a is
The connecting portion of the return groove 47 and the side edge 48 on the opposite side of the sliding surface 25a are formed into curved or inclined surfaces. The movable blade 30 slides on the sliding surface 25a at the rear end when in use, but to release the movable blade 3o, press the return hook 34 and move it slightly forward as in the first embodiment, and the same operation will occur. and is held by the stepped surface 27a (Fig. Is17). Next, to release the holding of the movable blade, move the movable blade 3 as shown in Figure 18.
゜ is moved beyond its movable range in any one direction of the reciprocating direction. Then, the rear end surface 45 of the movable blade 30 becomes the stepped surface 2.
7a, the movable blade 3υ moves to the return groove 47 due to the tension action of the push-up spring 37, and further, the movable blade 3υ moves to the return groove 47 due to the lateral return action of both end pieces 40 of the push-up spring 37.
7 and the sliding surface 25a and the curved surface or inclined surface of the side line on the opposite side of the sliding surface 25a to move onto the p sliding surface 25a and return. The rest is the same as the first embodiment.

Note that the sliding movement 25a and the return groove 47 can be modified as shown in FIG. 19. However, the print surface #25
A is set to a size that prevents the movable blade 30 from coming off with normal amplitude.

A third embodiment of the invention is shown in FIGS. 20 to 26. This is done by providing a lifting boss 50 on the fixed plate 20g at the position of the rear end recess 49 of the fixed blade 22b which has a step surface 27b formed on the front side of the sliding surface 25b, and setting the height of the raised boss 50 on the sliding surface 25b of the fixed blade 22b. The boss 50 is made higher and continues from the part 28a that forms the step surface 27b of the fixed blade 22b.
A tapered surface 51 is formed on the surface. The operation of the movable blade 30 in the use state and the opening/disengaging operation are the same as those in the first and second embodiments, but the release operation of the holding state is performed by moving the movable blade 30 in the lateral direction as in the second embodiment. The rear end of the movable blade 30 is $
24 and 25 along the tapered surface 51 from 28a.
Lift it up onto the upper surface of the lift boss 50 as shown in the figure.

As a result, the rear end surface 45 of the movable blade 30 comes off the step surface 27b, and then returns to the original state on the sliding surface 25b due to the tensile force of the push-up spring 37 and the lateral return force (Fig. 26). .

The rest is the same as the first embodiment.

A fourth embodiment of the invention is shown in FIGS. 27 to 29. That is, holes 52 and 53 are formed in the front sides of the rear end sliding surfaces 25 of the fixed plate 20b and the fixed blade 22c, and the fixing bosses 54 are fitted into the fixing plates 20b so that they can freely protrude and retract. It forms a fixed price of $55. Movable blade 30
When opening, move the rear end corner edge 44 of the movable blade 30 forward and drop it into the fixing n55 in the same way as in the embodiment S], and apply the same action as in the first embodiment to the opening state. hold it.

On the other hand, when removing it, push up the fixing boss 54t and force the movable blade 30 into a horizontal state to release the rear end corner edge 44 of the movable blade 30 from the fixing groove 55.
The opening, which returns to the sliding surface 25 by the tensile action of 7, and the like are the same as in the first embodiment.

As a modification of this embodiment, as shown in FIG.
A boss 54' with a number 5 may be formed integrally with the fixed plate 20b. In this case, the holding release operation of the movable blade 30 is performed by pinching the blade edge and lifting the rear end corner edge 44 of the movable blade 30 from the $55 using the #1 edge as a fulcrum. It is separated and returned onto the sliding surface 25 by the action of the push-up spring 37.

A fifth embodiment of the invention is shown in FIGS. 31 to 40. That is, this hair cutter blade is capable of cutting and cutting, and the fixed blade 22d forms gaps 57 at the bottom of every plurality of cutting grooves 56, and the sliding surface 2 at the rear end.
5b has two movable blade fixing grooves 55a at predetermined intervals,
55b. In addition, in the push-up spring fitting portion 43a of the guide plate 31a attached to the movable blade 30, there is a fitting groove 58 for a gap.
The Kono hair cutter blade is completely formed with a fitting groove 59 for cutting, and the movable blade 30 is moved back and forth to change the level difference between the fixed blade tip and the movable blade tip. ), cut step (by holding a small knife, remove only 20-30% of the hair that has entered the entire blade groove), and cutting the hair that has entered the entire blade groove during the cut. . In other words, when there is a cut step as shown in Fig. 35, the depth of the shallow groove of the fixed blade 22d is usually smaller than that of the $56 groove, so the movable blade 30 slides back and forth across the entire blade groove, and the hair introduced into the rotation is removed. cut all. In addition, when there is a gap step as shown in Fig. 36, the depth of the shallow groove of the fixed blade 22d is larger than the shallow groove depth of #i56, so the movable blade 30 does not reciprocate in the cut groove portion, but slides only in the deep groove groove #57. In order to do this, only the hair introduced into the gap #I57 is cut. When cleaning, the rear end corner edge 44 of the movable blade 3° is supported by the clearing fixing groove 55a when in the clearing state and by the cutting fixing groove 55b when in the cutting state to keep them separated. Its operation and hold release operation are similar to the lX4 embodiment. The rest of the structure around the movable blade and the fixed blade is the same as that of the first embodiment. A sixth embodiment of the present invention is shown in FIGS. 41 and 42. This is information board 3
1b or the rear end of its cleaning hook 34.8, a fixing boss 60 is integrally provided to protrude toward the fixing plate 20c, and the fixing plate 20
A fixing hook 61 that fits into the boss 60 is provided at c. When cleaning, when the cleaning hook 34a is pushed down, the movable blade 30 is separated from the fixed blade 22, and at the same time the fixing boss 60 is fitted into the fixing hook 6. As a result, the movable blade 30 is held in the open state. On the other hand, to release the holding state, pinch the cutting edge as shown in FIG.
It returns to the fixed blade 22 by the action of. The rest is the same as the fsl embodiment [Effects of the invention] As described above, according to the hair cutter blade of the present invention,
Cleaning is easy because the open state is maintained, and there is no wear on the guide plate fitting part, and there is no reduction in cutting quality due to noise or a reduction in the vibration amplitude range. It has the effect of not coming off.

[Brief explanation of the drawing]

Figure 1 is a plan view of the conventional example, Figure 2 is a sectional view thereof, Figure 3 is a sectional view of the opened (cleaned) state, Figure 4 is an enlarged sectional view of the push-up spring fitting part, and Figure 5 is a sectional view of the conventional example. 6 is a perspective view of a hair cutter to which an embodiment of the tube 1 of the present invention is applied, FIG. 7 is an enlarged cross-sectional view of the blade, and FIG. 8 is a fixed blade of the hair cutter. 9 is a sectional view taken along line IX-IX, FIG. 10 is a plan view of the fixing plate, and FIG. 11 is a vertical sectional view. Fig. 13 is a plan view of the hair cutter blade, Fig. 14 is a cross-sectional view showing the return operation state, Fig. 15 is a plan view of the fixed blade of @2 Jiyanagi example,
Figure 16 is a 70■-xvi@ cross-sectional view, and Figure 17 is an open (
18 is a plan view of the hair cutter blade, FIG. 19 is a partial plan view of a modified example, and FIG. 20 is Ia
21 is a longitudinal sectional view thereof, FIG. 22 is a partial perspective view of the fixing plate, 23rd C is a partial plan view in the open state, and FIG. 24 is the returning operation. partial side view of the process;
Fig. 25 is a partial plan view thereof, Fig. 26 is a partial side view of the returned state, Fig. 27 is a plan view of the fixed blade and fixed plate of the fourth embodiment, and Fig. 28 is its , FIG. 29 is a sectional view of the opened state, FIG. 30 is a partial sectional view of the boss of the modified example, FIG. 31 is a plan view of the fixed blade of the fifth embodiment, and FIG.
The figure is a sectional view taken along the line -mII, FIG. 33 is a plan view of the guide plate, and FIG. 34 is a sectional view taken along the line XXXIv.
The figure is a plan view of the cut state, Fig. 36 is a plan view of the open state, Fig. 37 is a cross-sectional view of the cut state, M2S is a cross-sectional view of the open state, and Fig. 39 is a cross-sectional view of the cut state in the open state. ,
Fig. 40 is a sectional view of the opened state in the open state, jl! FIG. 41 is a sectional view of the sixth embodiment, and FIG. 42 is a sectional view of the sixth embodiment. 2 U, 2(la, 20b, 20c...
Fixed plate, 22 + 22a r22b, 22c,
22d - fixed blade, 25, 25a, 25b - sliding surface, 27, 27a, 27b... step surface (holding means), 28... groove, 29... return boss (holding release means), 30. =Movable blade, 31, 31a, 31
b... Information board, 34° 34a... Sweeping hook,
37... Oshiage, 44... Rear end corner edge, 45...
Rear end surface, 47... Return #I (holding release means>, 50
... Rising boss (holding release means), 5J... Taper, 54.54', 60... Fixing boss, 55,
55a, 55b...Fixing S (holding and holding release means>, 6]...Fixing hook (holding and holding release means)
Figure 1 156 2 Figure 2 Figure 4 Figure 6 Figure 11 9 Figure 7 Figure 10 Flexion Figure 27 Figure 29 Figure 28 Figure 30 Figure 39 Figure 41/

Claims (1)

[Scope of Claims] (υ A fixed blade, a movable blade that is slidably superimposed on the fixed blade, a push-up spring that presses the movable blade against the fixed blade, and a movable blade that presses the movable blade against the fixed blade; A hair cutter blade comprising a separating means for separating the blade, a holding means for maintaining the separated state of the movable blade, and a releasing means for releasing the separated state of the movable blade. (2) The movable hair cutter blade. The blade has an advanced position and a retreated position with respect to the fixed blade, and the separating means and the holding means separate and hold the movable blade in the respective positions. Hair cutter blade.