JPH0667002U - saw - Google Patents

Abstract

(57) [Summary] [Purpose] A saw blade member that is replaceable with respect to the handle member is securely and easily fixed while preventing rattling and slipping out. [Structure] Both ends 2b of a core 2a of the saw blade member 2 are formed in a taper shape in which a width diameter becomes narrower toward a tip, and at the both ends in the short side direction of the connecting member 4, Clamping having a groove having a taper angle of the core 2a and a groove width substantially equal to the thickness of the core 2a so that both ends of the core 2a are slidably abutted and clamped. The part 4a is provided. The screw 5 that exposes the knob 5a to the outside of the handle member and is screwed into the screw hole formed in the one holding portion 4a is the holding portion 4a.
The core 2a engaged with a is press-contacted to the other holding portion 4a so as to be freely contactable and separable.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a saw in which a saw blade member can be freely replaced with respect to a handle member. The saw blade member can be replaced very smoothly and easily, and the saw blade member is securely fixed to the handle member. The saw has excellent workability, ease of assembly, and safety.

[0002]

[Prior art]

 It is necessary to prepare multiple saws depending on the application, but it is economically burdensome to prepare many types of saws, and it takes a lot of storage space and is inconvenient to carry. Also, even if the saw blade is damaged, the handle can still be used, but the entire saw is often discarded. Therefore, in recent years, the saw blade members have been different depending on their applications, but in the handle member, various saws have almost the same diameter and shape, and the saw blade member is replaced with the handle member. Various kinds of free saws have been devised.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional saw, when the saw blade member is joined to the handle member, the handle member, the saw blade member and the connecting member are complicatedly processed, and more fasteners are required. It had to be expensive. Also, it takes a lot of time and labor for the replacement blade work, and it is difficult to obtain a reliable and firm fixed state between the handle member and the saw blade member, so it is difficult to exert a suitable cutting force. In addition, there is a risk that an unforeseen situation may occur, such as the saw blade member and handle member or connecting member coming off during work, and many problems remain in terms of workability and safety. It was

Therefore, in the present invention, such drawbacks are improved, and the saw blade member, the handle member, and the connecting member are not complicatedly processed, and a large number of fasteners for coupling are not required. The replacement blade operation can be performed extremely smoothly and with high safety, and there is no possibility of the saw blade member rattling with respect to the handle member or slipping out, and safety, It is an object of the present invention to provide a saw having excellent cutting workability and economy.

[0005]

[Means for Solving the Problems]

 The above-mentioned object consists of a saw blade member, a handle member, and a connecting member for connecting and fixing the saw blade member and the handle member, and the inside of the saw blade member with respect to the connecting member fixed to the handle member. In a saw in which a child can be inserted and removed freely, both ends of the core of the saw blade member are formed in a taper shape in which the width diameter becomes smaller toward the tip, and the connecting member has the above-mentioned both ends. The saw blade member has an inclination that is substantially the same as the taper angle of the core and has a width diameter that is approximately the same as the plate thickness of the core, and both sides of the core are slidably abutted and clamped. The grip member is provided, and further, the core of the saw blade member sandwiched between the handle member and the connecting member on one side of the handle member is inserted in the handle member on the other side. This is achieved by a saw characterized in that a fixing member that presses against the holding portion is attached to and detachable from the core. .

The fixing member may be a screw that exposes the knob to the outside of the handle member and is screwed into a hole formed in the holding portion of the connecting member.

Further, a concave portion into which the fixing member is inserted may be cut out at a portion of the core of the saw blade member where the fixing member abuts.

[0008]

[Action]

 Both sides of the core of the saw blade member are formed in a taper shape whose width diameter becomes smaller toward the tip, and the connecting member has substantially the same angle as the taper angle of the core of the saw blade member at both ends. Is provided and has a width diameter substantially equal to the plate thickness of the core, and is provided with a sandwiching portion that sandwiches both side ends of the core by slidingly abutting the core, and the handle member has a handle. Member and connecting member A saw blade member, which is inserted through a holding portion on one side of the holding member and is laterally held by the holding portion, a fixing member for pressing the core of the saw blade member to the holding portion of the other side is connected to the core. Since it is attached so that it can be separated, by engaging the core of the saw blade member with the pinching part of the connecting member fixed to the handle member, the core of the saw blade member is firmly attached without rattling to the connecting member. Not only is it clamped, but it is also clamped by a fixed member, so the saw blade member is not a handle member even if it is impacted. It is more firmly fixed without fear coming out.

[0009]

【Example】

 In the figure, reference numeral 1 is a saw of the present invention, which comprises a saw blade member 2, a handle member 3, a connecting member 4 connecting the saw blade member 2 and the handle member 3, and a screw 5.

The core 2a inserted into the handle member 3 of the saw blade member 2 is formed in a taper shape whose width diameter gradually becomes smaller toward the tip. It is preferable that the angle is about 1 to 3 or 4 degrees. A concave portion 2c is partially cut out at one side end 2b of the core 2a.

The handle member 3 has a structure in which half halves 3 a and 3 b obtained by vertically dividing a wooden elliptic cylinder into roughly two pieces are bonded together, and one of the half halves 3 a has a connecting member 4 on a surface facing the other half halves 3 b. A concave portion 3c having a depth similar to the thickness of the connecting member 4 is formed to fix the above.

The connecting member 4 is made of a long-diameter metal plate body, and has sandwiching portions 4a, which have grooves on both side edges in the short side direction of which the side ends 2b, 2b of the core 2a are slidably abutted. 4a is formed. The groove width of the holding portion 4a is set to be slightly larger than the thickness of the core 2a so that the core 2a of the saw blade member 2 can be engaged without rattling. Then, in order to slidably engage the core 2a of the saw blade member 2 between the sandwiching portions 4a, 4a, the inner width diameter between the sandwiching portions 4a, 4a is equal to the width diameter of the core 2a of the saw blade member 2. The angles formed by the sandwiching portions 4a, 4a are substantially the same as the taper angle of the core 2a of the saw blade member 2.

A screw hole 4b is formed through the one holding portion 4a of the connecting member 4, and a hole portion 3d formed on one side of the handle member 3 is inserted into the screw hole 4b. Then, the screw 5 having the knob 5a at the tip is screwed.

Reference numeral 4 c denotes a tongue piece that is a stopper when the tip end portion of the connecting member 4 is bent at a substantially right angle and is inserted into the handle member 3, and when the saw blade member 2 is pulled out. It also becomes the part to be tapped. Further, 4 d is a hole portion used to fix the connecting member 4 to the handle member 3, and is for connecting the connecting member 4 to the handle member 3 and then connecting the connecting member 4 with the connecting member 6.

In assembling the saw 1 of the present invention having the above-described structure, first, the connecting member 4 is housed in the recess 3c of the half piece 3a of the handle member 3 and fixed by the penetrating member 6, and then the other member The half pieces 3b are attached and fixed. Next, the core 2a of the saw blade member 2 is inserted into one end of the handle member 3 from the opening end of the connecting member 4, and the other end of the handle member 3 is tapped to remove the core 2a of the saw blade member 2. The layer 2a is further inserted into the connecting member 4, and the side end 2b of the core 2a is clamped and clamped between the clamping portions 4a, 4a to be fixed. Then, the knob 5a of the screw 5 that is screwed into the one holding portion 4a is rotated in the screwing direction, and the tip of the screw 5 presses the end surface of the recess 2c of the core 2a, so that the core 2a moves laterally. The core 2a is more firmly fixed by being pressed against the other holding portion 4a from the direction.

In addition, even if the side edge 2b of the core 2a and the clamping portion 4a are loosely pressed and clamped, and the screw 5 is also loosened, the tip of the screw 5 is placed in the recess 2c of the core 2a. In a certain case, even if the saw blade member 2 tries to come out of the handle member 3, the tip of the screw 5 comes into contact with the stepped portion of the recess 2c of the core 2a, so that an unexpected situation can be avoided.

When replacing the saw blade member, first, the screw 5 is sufficiently loosened, and then the tongue piece 4 c of the connection member 4 is tapped, so that the saw blade member 2 is easily separated from the handle member 3.

As shown in FIG. 4, a notch 4e is formed in the wall surface of the connecting member 4 immediately below the screw hole 4b into which the screw 5 is screwed. This is because the position of the screw hole 4b is set in advance so that the tip of the screw 5 presses the center of the side end 2b of the core 2a in order to press the core 2a strongly. If this notch 4e does not exist, the tip of the screw 5 is located on the wall surface of the connecting member 4, and it becomes impossible to press the center of the side end 2b of the core 2a.

[0019]

[Effect of device]

 As described above in detail, according to the saw of the present invention having the above-described configuration, the core of the saw blade member is engaged with the nipping portion of the connecting member fixed to the handle member to thereby taper the inner core and the nipping portion. The surfaces of the saw blade members are pressed and slid to each other, the core of the saw blade member is firmly and easily clamped against the connecting member without rattling, and the core member of the saw blade member can be contacted and separated from the outside by the fixing member. Since the blade can be pressed against the sandwiching portion on the other side of the lateral direction, the saw blade member is more firmly fixed without coming out of the handle member due to an impact or the like. Moreover, it is possible to perform extremely smooth and highly safe replacement blade work without complicated processing on the saw blade member, the handle member, and the connecting member, and without requiring a large number of fasteners for joining. Moreover, there is no risk of the saw blade member coming out of the handle member at all, and the safety, cutting workability, and economy are excellent.

Further, the fixing member is a screw that exposes the knob to the outside of the handle member and is inserted through a hole formed in the holding portion of the connecting member, and a portion of the core of the saw blade member where the screw abuts, If a recess is provided for the screw to enter, in the unlikely event that the side edge of the core and the clamping section are loosely pressed and the screw is loose, the tip of the screw will not be As long as it is in the recess, even if the saw blade member tries to come out of the handle member, the tip of the screw is prevented from coming into contact with the stepped portion of the recess of the core and coming out, so that an unforeseen situation can be reliably avoided. is there.

[Brief description of drawings]

FIG. 1 is a perspective view showing a connecting member and a saw blade member used in the saw of the present invention.

FIG. 2 is a schematic front view showing an engagement state of a connecting member and a saw blade member used in the saw of the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 saw 2 saw blade member 2a core 2b side end 2c recessed portion 3 handle portion 4 connection member 4a sandwiching portion 4b screw hole 5 screw 5a knob

Claims (3)

[Scope of utility model registration request] 1. A core of the saw blade member, which comprises a saw blade member, a handle member, and a connecting member for connecting and fixing the saw blade member and the handle member to the connecting member fixed to the handle member. In a saw that can be removably mounted, both ends of the core of the saw blade member are formed in a taper shape in which the width diameter becomes narrower toward the tip, and the connecting member has the saw blade at both ends. A holding member having an inclination substantially the same as the taper angle of the core of the member and having a width diameter substantially equal to the plate thickness of the core and slidingly abutting and sandwiching both side ends of the core. And a handle member and a connecting member on one side of the gripping member is inserted through the gripping member from the lateral direction to the gripping member on the other side. A saw characterized in that a fixing member which is pressed against the core is attached to and detachable from the core. 2. The saw according to claim 1, wherein the fixing member is a screw that exposes the knob to the outside of the handle member and is screwed into a hole formed in the holding portion of the connecting member. 3. The saw according to claim 1, wherein a recess into which the fixing member enters is cut out at a portion of the core of the saw blade member where the fixing member abuts.