JPH0317827Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is an electric hair clipper in which a blade member in which an upper blade body is integrally fixed to a lower blade body is connected to a motor built in a case. This invention relates to a blade replacement device for an electric hair clipper that can be replaced by fitting and locking the tip of the operating rod with a single touch, regardless of the position of the operating rod.

(Prior art) Conventionally, in electric hair clippers, a blade member in which an upper blade body is integrally fixed to a lower blade body is attached to a rocker head protruding from the tip of an operating rod connected to a motor built in a case. As a means for connecting to the upper blade, there has been known a mechanism in which the upper blade body is provided with a recess into which the rocking head is inserted and locked.

(Problem to be solved by the invention) However, in the conventional type, the operating rod, which is driven by a motor built into the case, does not always stop at a fixed position, and does not operate when replacing the blade member. The blade member was replaced by moving the blade member so that the recessed part of the blade member was positioned on the rocking head of the rod, and then inserting and locking the blade member, but the problem was that adjusting the position was troublesome and it took time to replace it. It was hot.

The present invention has been made to solve the above-mentioned problems, and aims to provide a blade changing device for an electric hair clipper that allows the blade member to be replaced with a single touch no matter where the operating rod is located.

(Means for solving the problem) In order to solve the above problem, a clamp piece is vertically disposed opposite to the tip of the operating rod that is driven by a motor built in the case. A triangular sloped surface and sloped surfaces on both sides of the cylindrical hard resin material are provided on the front surface so that each clamping piece can be fitted and locked even when the gripping pieces are in different positions. An operating engagement portion, which is longer than the width of the upper blade body that swings from side to side, is provided on the upper blade body so as to project forwardly.

(Function) According to the present invention having the above configuration, no matter where the operating rod is located, the horizontal width of each inclined surface of the operating engagement portion is the same as the horizontal width of the upper blade body. Since the blade member is longer than the width, the clamping piece of each corresponding operating rod is located at least above one of the inclined surfaces, and when the blade member is pushed up while being engaged with the holding plate, it is pushed up on one of the inclined surfaces. The corresponding clamping piece comes into contact with the holder, and when pushed up further, the clamping piece slides while pressing on the inclined surface, so the upper blade body moves on the lower blade body in the direction of the pressing by the clamping piece, and the operating engagement At the time when the mating portion and the operating rod are located on the same central axis, the operating engaging portion is fitted and locked between the respective clamping pieces.

(Embodiment) An example of the implementation of the present invention will be explained in detail with reference to the drawings.A comb blade-like blade portion 1 is provided at the tip, and an adjustment screw hole 3 is provided at the center of the rear flat portion 2 and is attached on both sides. A lower blade main body 5 is formed by making screw holes 4 respectively, and an upper blade main body 6 is formed on the flat part 2 of the lower blade main body 5.
a connecting plate 8 on which an upper blade holding plate 7 is attached and fixed so that the upper blade holding plate 7 is placed on the lower blade main body 5 so as to be able to swing from side to side;
is fixed.

The connecting plate 8 has a protruding surface part 9 in the center thereof in a direction perpendicular to the comb-like blade part 1, and both sides of the protruding surface part 9 are bent downward into an L shape, and horizontal plates 10 are connected to the protruding surface parts 9, respectively. A fitting recess 11 is provided on the lower surface of the protrusion 9, and a protrusion piece 12 is provided by extending the rear edge of the protrusion 9 further rearward from the rear end of each horizontal plate 10. An adjustment screw hole 13 communicating with the adjustment screw hole 3 is bored in the center front side, and both horizontal plates 1
Mounting screw holes 14 communicating with the mounting screw holes 4 are drilled in each of the holes 0 and 4, and several adjustment grooves 15 are cut in the rear portions of both horizontal plates 10 in parallel with the comb-like blade portion 1. In addition, a rectangular hole 16 is formed near the rear of the protruding surface portion 9.

The upper blade body 6 is made of a hard synthetic resin with a comb-like blade part 17 at the tip and a sliding V groove 19 parallel to the comb-like blade part 17 on the rear flat part 18. A sliding connecting plate 20 made of aluminum is fixed, and furthermore, clamping pieces 23 are installed vertically on both sides of the tip of an operating rod 22 that protrudes from the case 21 at the rear center on the sliding connecting plate 20.
An operating engagement portion 24 is formed in a protruding manner, which is fitted and locked between the blades and is driven by the operating rod 22 to swing the upper blade body 6 from side to side on the lower blade body 5.

The operating engagement portion 24 is formed of a cylindrical hard resin material 25 having a diameter that can be tightly fitted between the respective clamping pieces 23, and the entire comb-like blade portion 1 is placed on the sliding connecting plate 20.
The cylindrical hard resin material 25 is planted so as to be inclined in seven directions, and the lower part of the front side of the comb-like blade part 17 side of the cylindrical hard resin material 25 is cut perpendicularly to the sliding connecting plate 20 to form a vertical surface 26. A triangular slope 27 inclined toward the rear side is provided on the upper part of the vertical surface 26 to form a comb-shaped blade portion 17.
and 28a and 28b are provided in series so as to face each other at right angles, and slopes 28a and 28b are provided in series with both hypotenuses 27a and 27b of the triangular slope 27 being the apexes, and as shown in FIGS. 5a and 5c, the slopes 28a and , 28b in the horizontal direction is longer than the horizontal swing width of the upper blade main body 6, and the inclined surfaces 28a, 2
The lower part of 8b is the curved surface 2 of the cylindrical hard resin material 25.
9 remains in the same shape.

The upper blade retaining plate 7, which allows the upper blade body 6 to swing from side to side on the lower blade body 5, is formed by bending the front and rear parts of a flat steel plate diagonally downward, respectively, to form an intermediate protrusion 30.
A front slope 31 and a rear slope 32 are provided on the front and rear sides, respectively, and the tip edge of the front slope 31 is further bent upward to provide a V-shaped end 33 that fits into the sliding V groove 19 from above. , the rear of the rear slope 32 is bent horizontally, a recessed notch 34 is provided in the center thereof, extension pieces 35 are stretched on both sides, and each extension piece 3 is
5 is bent at a right angle to provide a leg piece 36 that fits into any of the adjustment grooves 15, and extends between the intermediate protrusion 30 and the front slope 31 to form an opening 37. An oval adjustment hole 38 is formed in the intermediate protrusion 30 behind the opening 37 in a direction perpendicular to the opening 37 .

Then, the connecting plate 8 is placed on the flat part 2 of the lower blade main body 5, and the mounting screws 39 are inserted into the respective mounting screw holes 4 and 14 to fix both, and the respective adjusting screw holes Insert the adjustment screws 40 into the holes 3 and 13, place the upper blade body 6 at a predetermined position on the lower blade body 5, and insert the upper blade holding plate into the sliding V-groove 19 of the upper blade body 6. At the same time, the leg piece 36 of each extension piece 35 is fitted into one of the plural adjustment grooves 15, and the set adjustment screw is inserted into the adjustment oval hole 38. A nut 40a is screwed through the opening 37, and the triangular slope 27 of the actuating engagement portion 24 slightly protrudes from the opening 37, thereby forming the blade member A.

The upper blade body 6 of this blade member A is only resiliently pressed on the lower blade body 5 by the V-shaped end 33 at the front of the upper blade holding plate 7, using the adjustment screw 40 as a fulcrum. , can swing left and right using the V-shaped end portion 33 as a guide, and the adjustment oval hole 38
By moving the upper blade retaining plate 7 back and forth and fixing it with the adjustment screw 40, the position of the upper blade retaining plate 7 can be adjusted. The pressing force is adjusted by the tightness of the nut 40a.

Furthermore, when the comb-like blade part 17 of the upper blade body 6 is polished, the comb-like blade part 17 becomes gradually shorter, so hair cannot be cut unless the upper blade body 6 is moved forward. The piece 36 is fitted into the front one of the plural adjustment grooves 15, and the upper blade holding plate 7 is moved forward through the adjustment oval hole 38 to adjust the position of the upper blade main body 6. This prevents the blade from becoming distorted due to use.

On the other hand, the case 21 is provided with an operating rod 22 which is connected to a drive device (not shown) and protrudes from the case 21, as described above, with the clamping pieces 23 hanging down on both sides of the tip, which fit and lock into the operating engaging portion 24. However, each clamping piece 2 of the operating rod 22
3 is fitted and locked into the operating engagement portion 24, the triangular slope 27 portion must be lower than the upper plate 41 of the operating rod 22 and be formed parallel thereto so as not to contact the upper plate 41 of the operating rod 22. In addition, in order to facilitate the engagement of each clamping piece 23 with the operating engagement part 24, the lower edge of each clamping piece 23 has a forward end 23a at a high position, and gradually moves toward the rear side 23b. It is configured to be low. Further, at the lower part of the operating rod 22 of the case 21, a binding plate 4 for binding the blade member A is provided.
2 is permanently installed. This binding plate 42 is connected to the substrate 4
A holding plate 45 having a U-shaped bottom surface 44 is provided by bending the lower part of 3, and a fitting protrusion 46 that is fitted into the square hole 16 of the coupling plate 8 is protruded in the center of the holding plate 45. At the same time, a recessed part 47 is provided above the base plate 43, and the protruding plates 48 on both sides are bent into an inverted U-shape to engage with the protruding surface part 9 of the coupling plate 8.
However, it is recommended that the tip of the engagement piece 49 be bent outward to provide a curved surface 49a.

To explain the operation of the embodiment, in order to mount the blade member A in which the lower blade body 5 and the upper blade body 6 are integrated into the case 21, first attach the protruding piece 12 of the connecting plate 8 of the blade member A to the connecting plate 42. in contact with the U-shaped bottom surface 44 of
When the blade member A is pushed upward while the engagement piece 49 is in contact with the upper surface of the protrusion 9, the engagement piece 49 temporarily curves upward, but the protrusion 9 gradually slides on the curved surface 49a. Then, the curved surface 49a slides on the front edge 9a portion of the protruding surface portion 9,
Due to the elastic force of the engaging piece 49, the engaging piece 49
The coupling plate 42 is press-fitted into the fitting recess 11 on the lower surface of the blade member A, and the coupling plate 8 of the blade member A is coupled and fixed thereto. Simultaneously with this engagement and fixation, the actuation engaging portion 24 is fitted and locked between the two clamping pieces 23 of the actuation rod 22.

That is, in the process of the coupling plate 8 being coupled to the coupling plate 42, when the operating rod 22 and the operating engagement portion 24 are on the same central axis as shown in FIG. By pushing up in the direction of the case 21, each clamping piece 23 slides gradually deeper along the curved surface 29 at the periphery of each inclined surface 28a, 28b, and the binding plate 8 is joined and fixed to the binding plate 42. At the point in time, each clamping piece 23 comes into surface contact with the curved surface 29 of the operating engagement part 24, and as the operating rod 22 swings from side to side, the operating engagement part 24 is moved by each clamping piece 23. The upper blade body 6 swings from side to side on the lower blade body 5.

Further, as shown in FIG. 9, when the operating rod 22 and the operating engagement part 24 are not on the same central axis, the inclined surfaces 28a and 28b of the operating engagement part 24 vibrate to the left and right of the upper blade body 6, respectively. Each inclined surface 28a,
28b is configured to have a longer horizontal width L, which means that no matter where the operating rod 22 is located, each clamping piece 23 will be attached to each inclined surface 28a, 28b.
This means that it is always located on 8b.

Therefore, by pushing up the blade member A toward the case 21, one clamping piece 2 of the operating rod 22 is first removed.
The front end 23a of No. 3 is an inclined surface 28 facing this.
a, 28b, and by further pushing up the blade member A, the lower edge of one of the clamping pieces 23 gradually presses downward on one of the inclined surfaces, and this pressing force causes the lower edge of the clamping piece 23 to move upwardly. The blade body 6 gradually moves to the opposite side, and the other inclined surface comes into contact with the lower end of the other clamping piece 23, and finally the operating rod 22 and the operating engagement part 24 are located on the same central axis. , after that, as described above, each clamping piece 23 gradually deepens to each inclined surface 28a, 28b.
When the coupling plate 8 is fixed to the coupling plate 42, each clamping piece 23 comes into surface contact with the curved surface 29 of the actuating engagement part 24, As the actuating rod 22 swings from side to side, the actuating engagement part 24 is pressed by each clamping piece 23 and moves, and the upper blade main body 6 swings from side to side on the lower blade main body 5. In other words, the curved surface 29 of the actuation engagement portion 24 is
In order to easily contact and fix the operating rod 22 to the operating engagement portion 24, it plays a role of guiding the clamping piece 23 of the operating rod 22.

When the blade member A is further removed from the case 21 and replaced with another blade member, first the blade member A
When pushed downward, the engagement of the actuation engagement portions 24 is released from each clamping piece 23 of the actuation rod 22, and the engagement piece 49 of the binding plate 42 is also separated from the connection plate 9. As shown in FIG. 11, while the protruding piece 12 of the connecting plate 9 of the blade member A is retained near the U-shaped bottom surface 44, the blade member A as a whole becomes oblique with respect to the case 21, and the rectangular shape of the protruding surface portion 9 The fitting protrusion 46 of the binding plate 42 is fitted into the hole 16, and the blade member A is prevented from falling off from the case 21. After that, the blade member A is pulled upward and the protrusion piece 1
2 can be removed by releasing the locked state near the U-shaped bottom surface 44.

(Effect of the invention) Since the present invention is as described above, no matter where the operating rod is located, each clamping piece of the operating rod can be moved with one touch by simply pushing up the blade member without adjusting the position of the blade member. An operating engagement portion is fitted and locked in between.

[Brief explanation of drawings]

The figures show an example of the implementation of the present invention. Figure 1 is a perspective view of the blade member, Figure 2 is an exploded perspective view of the same, and Figure 3 shows the state in which the coupling plate is fixed on the lower blade body. Fig. 4 is a perspective view of the upper blade body; Fig. 5 is a perspective view of the upper blade body;
Figure a is an enlarged front view of the operating engagement part, b is a side view of the same, c is a plan view of the same, Figure 6 is a perspective view of the tip of the case, Figure 7 is a perspective view of the binding plate, and Figure 8 is a A front view showing the state immediately before mating when the actuating engagement part and the actuating rod are on the same central axis, and Figure 9 shows the mating state when the actuating engaging part and the actuating rod are not on the same central axis. FIG. 10 is an enlarged sectional view showing the state in which the blade member is set in the case body; FIG.
FIG. 1 is an enlarged sectional view showing a state in which the blade member is locked to the binding plate of the case body. In the figure, 6 is the upper blade main body, 21 is the case, 22 is the operating rod, 23 is the clamping piece, 24 is the operating engagement part, 25
is a cylindrical hard resin material, 26 is a vertical surface, 27 is a triangular slope, 27a, 27b are hypotenuses, 28a, 28b
is an inclined surface, and 29 is a curved surface.

Claims (1)

[Scope of utility model registration request] A vertical surface is provided on the lower front part of a cylindrical hard resin material with a diameter that can be tightly fitted between the clamping pieces vertically provided on both sides of the tip of the operating rod that protrudes from the case, and a vertical surface is provided on the upper part of the vertical surface to the rear side. In addition to providing a series of inclined triangular slopes, slopes are also provided on the left and right sides with both hypotenuses of the triangular slopes being the apexes, and the horizontal width of each slope swings to the left and right of the upper blade body. A blade changing device for an electric hair clipper, in which an operating engagement part formed to be longer than the swinging width is installed on the upper blade body so as to be inclined toward the front side.