JPS6232753Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an electric knife sharpener that uses a rotating whetstone to sharpen knives and other knives, and is equipped with a spare blade receiver to catch the blade of the knife when sharpening the knife. It is something.

This type of knife sharpening machine has a blade receiver fixed to the part facing the knife insertion opening, and this blade receiver receives the blade of the knife and also removes burrs that occur on the blade.

However, the blade receiver suffers wear and tear during use, and because the conventional blade receiver is fixed to one piece, it cannot be replaced with a new blade receiver, which is extremely inconvenient.

The primary purpose of this invention is to make the blade holder removable from the sharpening machine so that it can be replaced with a new blade holder. The second purpose is to store spare and unused blade holders using the dead space in the battery storage chamber, so that even small blade holders can be stored without fear of loss. shall be.

The details will be explained below based on the drawings.

The drawing shows an example of a knife sharpening machine according to this invention, in which a main body case 1 is a synthetic resin molded product made of ABS resin, etc., and a horizontally long rectangular base 2.
It consists of an upper case 3 whose transverse side is gate-shaped and which is connected to the upper case 3 by tapping screws a, and a battery storage chamber 4 is provided in the left half of the main case 1.
is formed, and an electric motor 5 is built in the center of the right half. The electric motor 5 has horizontal rotating shafts 6 and 7 on the left and right sides, and disc-shaped rotating grindstones 8 and 9 are fixed to both rotating shafts 6 and 7, respectively. Of these, the left rotating grindstone 8 is used for rough sharpening, The rotating grindstone 9 on the right side is used for final sharpening. Both left and right sides (knife sharpening surfaces) 1 of these rough whetstones 8 and finishing whetstones 9
A pair of symmetrical knife insertion guide grooves 11, 11 are provided at positions facing 0 and 10, and by inserting a knife into either the left or right groove 11, the bladed surface of either the left or right side of the knife can be sharpened. be able to.

Each guide groove 11 is carved obliquely from the front side 12 to the rear side 13 of the main body case 1 so that the front side is closer to the sharpening surfaces of the grindstones 8 and 9, and the bladed surface is at an optimal inclination. The side surface 14 facing each grinding surface 10 is inclined at the above-mentioned inclination angle so as to come into contact with the grindstones 8 and 9 at the corner. Further, in order to stably attach the cutter to the inclined side surface 14, a pair of leaf springs 14a are attached to the rear half side of each guide groove 11 for urging the cutter against the inclined side surface 14.

Cutlery drawer openings 15, 15 provided at the front end of the left and right knife insertion guide grooves 11 corresponding to the respective grindstones 8, 9
A step-down surface 16 is formed between the main body case front side surface 12 and the step-down surface 16, and blade receivers 17, 17 are removably mounted on this step-down surface.

In FIG. 3, each blade receiver 17 is made of synthetic resin such as polypropylene, which is more flexible than the ABS resin that forms the main body case 1 and is less likely to generate powder when the blade is rubbed against it. Ori,
It is formed into a rectangular parallelepiped shape that substantially matches the space surrounded by the step-down surface 16 and the respective side surfaces surrounding the rear and left and right sides thereof, and has a cylindrical fitting protrusion 18 at the center of its bottom surface. The protrusion 18 is connected to the stepped surface 1
By fitting into the circular fitting hole 19 transparently provided in the center of the receiver 17, the left, right and rear side surfaces of the receiver 17 come into close contact with the side surfaces surrounding the stepped surface 16, and the upper surface (blade receiving surface) 17a continues flush with the horizontal surface of the cutter drawer opening 15.

To remove this blade receiver 17 from the stepped surface 16, insert your fingers or a jig through the pair of abrasive powder outlet openings 21, 21 provided in the bottom wall 20 of the main body case 1, and This is done by pushing upward and removing it from the fitting hole 19.

The abrasive powder outlet ports 21, 21 are open below the rough whetstone 8 and the finishing whetstone 9, and have a U-shaped powder receiving tray 2.
2 is normally closed, and if abrasive powder from the grindstones 8 and 9 accumulates, the powder receiving tray 2 is removed and the abrasive powder is discarded.

2 to 6, four AA batteries 24 are inserted into the battery storage chamber 4 from the battery insertion slot 23 provided from the left side to the bottom of the main body case 1 toward the electrode end, and two batteries are inserted in the front and back. The two dry batteries 24 on the left side are housed in parallel, and the left ends of the two dry batteries 24 are supported by a lid 25 attached to the battery insertion slot 23. Also, electrode plates 27 and 28 are installed on the partition wall 26 formed at the right end of the battery storage chamber 4 at the front and rear. 27 approaches and separates from the switch plate 29. This switch plate 29 is provided on the front wall of the main body case 1 and is connected to the cathode of the motor 5. Lid body 25
A terminal plate 30 is provided on the terminal plate 30, and the front and rear batteries 24 on the left side are brought into contact with the terminal plate 30, so that the four batteries 24 are electrically connected in series.

Now, on the upper and lower surfaces of the battery storage chamber 4, guide rails 31 and 32 for battery insertion are vertically arranged parallel to the front and rear side walls of the main body case 1, extending from the left opening end in the left-right direction to the right partition wall end in the battery insertion direction, that is, in the left-right direction. Four of each are erected facing each other. Among these, the lower guide rail 32 has a pair of adjacent inner and outer rails 32 to support the circumferential surface of the battery 24, and the upper guide rail 31 restricts the movement of the battery 24.

The distance t between the opposing side surfaces of the two inner guide rails 31, 31 among the four upper guide rails 31 is set approximately equal to the left and right width of the blade receiver 17, and the battery in the valley 33 between the side surfaces. A pair of circular protrusions 34, 34 with holes, into which the fitting protrusion 18 of the blade receiver 17 is tightly fitted, is protruded from the part facing the insertion opening 23 side, and a pair of circular protrusions 34, 34 with holes are provided on the left and right, and the holes of the protrusions 34 are filled with spare or unused parts. When the fitting protrusion 18 of the blade holder 17 is inserted during use, the blade holder 17 will have the left and right sides aligned with the two inner sides.
The book is housed in the blade receiver housing 35 in the valley 33 in a state where the book is prevented from rotating by the opposing side surfaces of the book guide rails 31, 31.

Further, as shown in FIG. 6, the lid body 25 has an L-shape that matches the shape of the battery insertion port 23 of the battery storage chamber 4, and a small diameter hole is provided at the center of the upper side of the inner surface of the vertical side wall 36. A support shaft 37 is provided to protrude horizontally in the battery insertion direction, and the support shaft 37 supports the blade receiver housing 3.
It supports the blade receiver 17 housed in the housing part 5 and prevents the blade receiver 17 from detaching from the housing part 35 and falling under its own weight.

Now, insert the knife into the knife insertion guide groove 11,
Lightly place the bladed surface on the sharpening surface 10 of the whetstone 8 (or 9) and pull the knife toward you at an appropriate speed while holding down the switch button 29a, then the bladed surface will be sharpened sequentially from the base to the tip. can go. At this time, a burr is generated on the back side of the bladed surface at the same time, but this is caused by the blade receiving surface 17 of the blade receiving body 17 facing the blade drawer opening 15 side of the guide groove 11 when the blade is pulled.
Rub the blade against a to remove it.

In order to prevent the switch button 29a from being pressed by mistake when not in use, a gate-shaped erroneous operation prevention cover 38 is attached to the outer periphery of the main body case 1 so as to be slidable in the left and right direction. 38
Move the whetstones 8, 9 to the left side to expose the whetstones 8, 9 and the switch button 29a, and move the whetstones 8, 9 to the right side when not in use.
and covers the switch button 29a.

In the above embodiment, the blade receiver housing portion 35 is formed using the valley 33 between the upper guide rails, but the lower guide rail 3 opposite to the valley 33 is formed using the valley 33 between the upper guide rails.
It is also possible to make a design change such as forming a blade receiver housing part 35 in the valley 39 between 2 and 32.

In addition, there are rough whetstones 8 and finishing whetstones 9.
The present invention also anticipates the case of a type of sharpening using a single whetstone.

Furthermore, even if the knife insertion guide groove 11 is formed in a member separate from the main case 1, the part 1 of the member facing the knife drawer opening 15
It is also possible to attach the blade receiver 17 to the blade receiver 6 in a detachable manner.

As explained above, according to this invention, the blade holder 17 can be detachably attached to the edge 16 on the edge 16 of the blade drawer in the blade insertion guide groove 11. When the upper surface of the blade receiver 17 becomes worn out and becomes unusable, it can be replaced with a new blade receiver 17. Therefore, by replacing the blade receiver 17, which has a relatively short life, with a new one, it has become possible to significantly extend the life of the knife sharpening machine itself.

Moreover, the spare blade holder 17 or the blade holder 17 when not in use can be stored in a dead space in the battery storage chamber 4, i.e., on the battery insertion guide rail (31 or 3).
2) Since the blade receiver 17 can be stored in the blade receiver storage section 35 provided in the valley (33 or 39) between the blades, it is possible to always attach the blade receiver 17, which is extremely small and can be picked up with one's fingers, to the knife sharpener. There is no risk of losing it. In addition, this storage section 35
Since it is formed using the dead space in the battery storage chamber, there is no need to separately form a storage part in other parts, such as the outer wall of the main body case 1, and the manufacturing cost can be reduced accordingly. This has the advantage of making effective use of dead space within the main body case.

[Brief explanation of the drawing]

The drawings show an embodiment of the knife sharpening machine according to this invention, in which Fig. 1 is a perspective view with the lid, powder tray and blade holder removed, Fig. 2 is a plan view with main parts cut away, and Fig. 3 The figure is a sectional view taken along the - line in Figure 2.
4 is a perspective view of the main part of the case main body viewed from the bottom side, FIG. 5 is a sectional view taken along the line -- in FIG. 2, and FIG. 6 is a sectional view taken along the line -- in FIG. 2. 1...Main body case, 4...Battery storage chamber, 5...
Electric motor, 8... Grinding stone (rough grinding stone), 9... Grinding stone (finishing grinding stone), 11... Blade insertion guide groove, 15
...Knife drawer opening, 17...Blade receiver, 23...
Battery insertion slot, 24... Battery, 25... Lid, 3
1, 32...Battery insertion guide rail, 33,
39... Valley, 35... Blade receiver storage section.

Claims (1)

[Scope of utility model registration request] A knife insertion guide groove 11 is formed in the body case 1 in which an electric motor 5 and a rotary whetstone driven by the motor 5 are built in, and a knife insertion guide groove 11 is positioned above the rotary whetstone. In the knife sharpening machine having the storage chamber 4, a blade receiver 17 for receiving the bladed surface of the knife is removably attached to the cutter drawer side portion of the knife insertion guide groove 11, and is attached to the inside of the battery storage chamber 4 along the battery insertion direction. It is characterized by having a plurality of guide rails (31 or 32) for battery insertion, and a blade receiver storage part 35 for storing the blade receiver 17 is formed in the valley (33 or 39) between the guide rails. A knife sharpening machine.