JPS6337202Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to saws with freely replaceable blades, and the blade can be replaced extremely smoothly and easily, and the saw blade can be reliably and firmly attached after the blade has been replaced. The saw blade holding member and handle member are integrated, making assembly easy and safe.
Regarding saws with excellent workability.

[Conventional technology]

In recent years, saws with freely replaceable blades have been devised, but when connecting the handle member or saw blade holding member to the saw blade member, complicated processing is applied to the handle member and saw blade member, and many fastenings are required. Since a tool is required, much time and effort is required to replace the blade, and even after the blade is replaced, it is difficult to securely and firmly integrate the handle member or saw blade holding member with the saw blade member. Therefore, it is difficult to exert a suitable cutting force, and there is also the risk of causing a dangerous accident such as the saw blade member and handle member or saw blade holding member coming off during work. However, many problems remained in terms of workability and safety.

[Problem that the invention attempts to solve]

This invention eliminates the need for complex machining on the saw blade body, handle member, saw blade holding member, etc., and eliminates the need for numerous fasteners, etc., making blade replacement extremely smooth and highly safe. In addition, there is no risk of the saw blade member 3 and the handle member or the saw blade holding member becoming loose or coming apart after they are connected, and is excellent in safety and cutting workability. The purpose of this product is to provide a saw.

[Means to solve the problem]

The above-mentioned purpose is to provide a protruding circular protrusion at the base end connected to the handle member, and to drill an engagement hole in the upper part of the plate at a constant distance from the base end. a saw blade comprising a saw blade, a saw blade back clamping part having an engagement hole drilled at a position corresponding to the engagement hole of the saw blade when the saw blade is stored, and a protruding part of the saw blade connected to the saw blade back clamping part. A saw blade holding member consisting of a storage part consisting of a substantially semicircular recess for storing the saw blade, and a handle insertion part connected to the storage part and having a notch part in the middle; When the other end is locked in the notch of the insertion part and the other end bent part is inserted into the engagement hole of the saw blade back clamping part, it is inserted into the engagement hole of the clamped saw blade, and then the opposite side A locking piece that protrudes from the engagement hole of the saw blade back holding part, and a handle member formed by fitting the handle insertion part of the saw blade holding member together with a part of the locking piece. The problem is solved by a saw.

〔Example〕

An embodiment of the present invention will be described below.

In the figure, 1 is a saw blade, 2 is a handle member, and 3 is a saw blade holding member. The saw blade 1 has a bulging circular protrusion 4 protrudingly provided at the end in the direction in which the handle member 2 is connected.
And an engagement hole 5 is provided in the saw blade 1 plate body toward the back of the saw blade.
is perforated. In addition, the saw blade holding member 3 has a saw blade back holding part 6 formed in the front part, and this saw blade back holding part 6 has an engagement hole for the saw blade 1 when the saw blade 1 is held therein. Similarly, an engagement hole 7 is bored at a location corresponding to 5. Further, a portion connected to the saw blade back holding portion 6 has a substantially semicircular shape corresponding to the bulged circular protrusion 4 for engaging and supporting the protrusion 4 of the saw blade 1 described above. Storage part 8 consisting of a recessed part
is formed. Reference numeral 9 denotes an insertion portion into the handle member 2 that is connected to the storage portion 8 . Reference numeral 10 denotes a locking piece, and a bent portion 10a at one end is locked in a notch 11 formed in the handle insertion portion 9, and a bent portion 10b at the other end is formed in the saw blade back holding portion 6. After passing through the engagement hole 5 of the saw blade 1 which is clamped, it protrudes from the engagement hole 7 of the saw blade back clamping part 6 on the opposite side, and the saw blade 1 is inserted more securely and firmly. This strengthens the connection between the saw blade holding member 3 and the saw blade holding member 3.

In other words, strong integral connectivity can be achieved between the circular bulging protrusion 4 at the end of the saw blade 1 and the approximately curved circular housing portion 8 of the saw blade holding member 3 that engages and supports the protrusion 4. However, in order to further prevent the saw blade 1 from wobbling to the perfect wall or coming off, this locking piece 10 is
There is an intervention. Note that this locking piece 10 is made of an elastic material.

In the present invention having the above configuration, first, when the saw blade 1 is to be held on the saw blade holding member 3, the approximately bulging circular protrusion 4 of the saw blade 1 is moved in a direction perpendicular to the base of the saw blade back holding part 6. If the protruding part 4 is inserted into the saw blade holding member 3 and then further rotated by 90 degrees toward the handle, the protruding part 4 will be smoothly stored in the storing part 8, which is a substantially semicircular recess of the saw blade holding member 3. Due to their mutual shapes, they are engaged and fixed in such a way that they cannot be pulled out.

Next, after the one end bent portion 10a of the locking piece 10 is locked into the notch 11 formed in the handle insertion portion 9, the other end bent portion 10b is inserted into the engagement hole 7 formed in the saw blade back holding portion 6.
The engagement hole 5 of the saw blade 1 is inserted into the
After it is inserted, it is made to protrude from the engagement hole 7 on the opposite side. Thereafter, the handle member 2 is completely fitted and fixed together with the locking piece 10 until the shoulder part 9a of the handle member 9 comes into contact with the insertion part previously formed on the handle member 2.

[Effect of idea]

In the present invention having the above configuration, a bulging circular protrusion 4 is protruded from the base end of the saw blade 1, and the saw blade holding member 3 corresponds to the bulging circular protrusion 4. Since the storage part 8 is formed of a substantially semicircular recess, it can be easily engaged and fixed, and especially in the present invention, the locking piece 10 can be easily engaged and fixed.
With this intervention, the saw blade 1 and the saw blade holding member 3 are more reliably and firmly connected as one body, and there is no risk of the saw blade 1 coming off or wobbling in either the axial or radial direction after being held. It is possible to provide a saw that is reliably and firmly integrated and has excellent safety and workability.

In addition, one end of this locking piece performs its intended function by simply locking into the notch without the need for complicated and time-consuming work such as welding, resulting in high manufacturing efficiency and ease of use when holding the saw blade body. The blade replacement operation can be performed extremely smoothly and easily without requiring a large number of fasteners, the saw blade main body, and the complicated machining of the saw blade main body holding member as in the prior art.

[Brief explanation of the drawing]

FIG. 1 is a front view of the saw of the present invention, FIG. 2 is a schematic exploded perspective view of the saw of the present invention, and FIG. 3 is a cross-sectional view showing the engaged state of the saw blade and the saw blade holding member. 1...Saw blade, 2...Handle member, 3...Saw blade holding member, 4...Protrusion, 5...Engagement hole, 6...Saw blade back holding part, 7...Engagement hole, 8... Storage section, 9...
Handle insertion member, 10...locking piece, 11...notch portion.

Claims (1)

[Scope of utility model registration request] A saw blade having a circular protrusion protruding from the base end connected to the handle member, and an engagement hole bored in the upper part of the plate body in front of the base end at a certain distance. , a saw blade back clamping part formed by drilling an engagement hole at a position corresponding to the saw blade engagement hole when the saw blade is stored; and a saw blade back clamping part connected to the saw blade back clamping part for storing the protruding part of the saw blade. A saw blade holding member consisting of a storage part consisting of a substantially semicircular recess, and a handle insertion part connected to the storage part and having a notch in the middle, the bent part at one end being inserted into the notch of the handle insertion part. When the bent part of the other end is inserted into the engagement hole of the saw blade back holding part,
A locking piece that is inserted into the engagement hole of the clamped saw blade and further protrudes from the engagement hole of the opposite saw blade back clamping part, and the handle insertion part of the saw blade holding member is A saw comprising a handle member fitted together with a part of the locking piece.