JPS6135409Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grindstone fixture that holds a grindstone and makes it possible to keep the grindstone constantly moistened with water.

Traditionally, to sharpen knives (knives, hooks, machetes, etc.), a flat whetstone was placed on a rootstock to improve the stability of the whetstone.
While wetting the whetstone by pouring water on it, the blade was placed against the whetstone and moved back and forth to sharpen the knife.

However, with this method of sharpening the blade, the blade of the knife tends to come off the whetstone surface back and forth, so in order to prevent the blade from coming off the whetstone surface, it is necessary to adjust the position of the blade on the whetstone surface. Since the grinding is performed near the center of the whetstone, the center of the whetstone surface wears out quickly, and the whetstone becomes deformed into a concave lens shape with a concave center. If you keep sharpening the knife, the cross section of the knife's blade will not be sharp enough and its sharpness will deteriorate.
A disadvantage of whetstones sharpened in this way is that they often require the use of a grinder to create a perfectly flat surface.

In addition, if the whetstone is used in a dry and dry state, the grinding surface of the whetstone will become clogged with metal powder from the sharpening of the blade and wear debris of the whetstone, which will significantly reduce the performance of the whetstone. When using a synthetic whetstone, it is necessary to wet it with water or oil and wash it off.Especially with synthetic whetstones, simply keeping water on the whetstone surface during use is not sufficient to absorb water, and the whetstone must be washed before use. If you do not leave it in water for a considerable length of time (about a day and night),
This makes it impossible for the whetstone to fully demonstrate its performance.

The purpose of this project is to maintain the flatness of the conventional flat grindstone without causing it to wear into a concave lens shape and wear it evenly, and to keep the entire grindstone in a damp state at all times, and to add water to the surface of the grindstone as necessary while sharpening the knife. The purpose of this invention is to improve the efficiency of the sharpening work of cutlery, and to provide a novel effect in that the cross section of the cutlery's blade can be finished at an acute angle.

To explain the structure and usage of the present invention using drawings, as shown in Fig. 1, the present fixing device has one long side of a rectangular plate shaped like an arc, and the center part of the arc is extended to a desired length. A notch with a depth of about 5 mm is made in the length of the plate material, and a desired number of convex portions 2 are formed on the inner surface of the plate material.The presser plates 1 and 1' are arranged in parallel with each other with the notches facing upward. , 1', a U-shaped groove-shaped foamed water-absorbing material 3 is disposed on the inner surface of the holding plates 1, 1' so that its opening abuts against the notch of the holding plates 1, 1'. Each bolt nut 4,
4', the rectangular whetstone 5 is inserted into the U-shaped groove-shaped water absorbing material 3 as shown in Figures 2 and 3, and tightened with bolts and nuts 4 and 4'. 5 is fixed between the holding plates 1 and 1' while being wound around the water absorbing material 3, so the second
As shown in FIG.
Once soaked in water, the water-absorbing material 3 absorbs and retains water sufficiently to keep the whetstone 5 moist at all times, thereby exhibiting the effect of preventing the whetstone 5 from drying out.

The proposed grinding wheel fixing device has a grinding wheel 5 as shown in Fig. 4.
The front and rear surfaces of the surfaces are connected to both ends of the arcuate surfaces of the presser plates 1 and 1', and the arcuate surfaces of the presser plates 1 and 1' exist as extensions of the five surfaces of the whetstone, so when sharpening the blade of a knife, the whetstone The blade that slides back and forth on the 5 surfaces will not come off the front and rear sides of the whetstone 5, and you can safely use all 5 surfaces of the whetstone as a polishing surface, so the whetstone 5 is always worn flat and the concave lens Not only does this prevent the 5 surfaces of the whetstone from wearing out, but the presser plates 1 and 1' also serve as guide plates when sharpening the blade, allowing the blade to be used with a longer stroke when sharpening the blade. Since there is no need to worry about the blade coming off the surface of the whetstone 5, you can apply force to the blade while sharpening, so not only can you easily use a small whetstone 5 with a short length, but you can also sharpen the blade faster than before. It is something to do. Furthermore, the danger of cutting one's hand during sharpening work can be prevented.

In addition, even during the blade polishing work, the water absorbing material 3 of the present fixing tool contains sufficient water, and when the rear part of the water absorbing material 3 is pressed as shown in FIG.
The water supply effect is shown on the grinding surface through the
This will prevent the 5 surfaces of the whetstone from becoming contaminated by foreign objects, and will prevent the polishing process from occurring like traditional sharpening work with a whetstone.
Not only does it eliminate the troublesome work of washing the whetstone by soaking it in water or pouring a large amount of water onto the five sides of the whetstone, but also by keeping the water-absorbing material 3 of the fixing device constantly moistened with water. When using a synthetic whetstone or the like, there is an effect that the work of soaking the whetstone 5 in water by soaking it in water for a long time becomes unnecessary.

The proposed whetstone fixture can be used with the abrasive surface facing upward like a conventional whetstone, but when sharpening a sickle blade or a long blade such as a paper cutting blade, If you hold the fixing device in your hand and use it with the whetstone surface facing downward, you can sharpen the blade while visually observing it just like filing, making it even more effective, such as achieving precise sharpening. It is something.

In addition, if the proposed fixing device is wrapped in vinyl cloth or the like while the water-absorbing material 3 contains moisture, it will prevent moisture from evaporating for a long time and can be carried as is, so it can be used at work sites where there is no water at all. Even if the whetstone 5 is slightly worn out due to long-term use, you can easily sharpen the blade by holding it in place.If the whetstone 5 is slightly worn out due to long-term use, you can use it for the first time by gluing together a whetstone of the same shape as the whetstone 5 with adhesive. The whetstone 5 has a novel and unprecedented effect in that it can be used up to the end without having to throw it away because it has become too thin to use.

[Brief explanation of the drawing]

Figure 1 is a top view of the present proposal. FIG. 2 is a side view showing an example of use of the present invention. FIG. 3 is a front view showing an example of use of the present invention. FIG. 4 is a perspective view showing an example of use of the present invention. The main symbols are 1, 1': Holding plate. 2: Convex portion.
3: Water absorbing material. 4,4': Bolt nut. 5: Whetstone.

Claims (1)

[Scope of utility model registration request] One of the long sides of the rectangular plate is made into an arc shape, and a notch with a depth of 5 mm is made at the desired length in the center of the arc, and the desired number of protrusions 2 are formed on the inner surface of the plate. Two presser plates 1 and 1' are arranged in parallel with each other with the notch facing upward, and a U-shaped groove-shaped foamed water absorbing material 3 is placed between the inner surfaces of the presser plates 1 and 1'.
A grindstone fixing device is formed by arranging the openings of the two presser plates 1, 1' so as to abut the notches, and securing both ends of the two presser plates 1, 1' with bolt nuts 4, 4', respectively.