JPH069901U - Foldable blade - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a foldable blade in which a holding member can be easily manufactured, and moreover, holding of the blade body by the holding member is stable and a retaining lever is difficult to separate from the blade body back portion during use. [Structure] Holding member 1 having guide surfaces 2 facing each other
And a blade body 5 rotatably pivoted between a fully open position and a fully closed position by being sandwiched between both guide surfaces 2 of the holding member 1,
At the holding member 1, at the fully open position of the blade body 5, a retaining lever 13 pivotally attached to the back portion of the blade body 5 in a disengageable manner and normally biased in an engaging direction with the back portion of the blade body 5, and the holding member 1. A handle body 8 which is mounted and accommodates the blade body 5 at the fully closed position of the blade body 5, wherein the holding member 1 is formed of an integral plate material having a U-shaped cross section, and the holding lever 1 is provided.
The tip of the blade 3 is engaged with and disengaged from the back of the blade 5 through a guide hole 3 provided in the bent portion of the holding member 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a foldable blade capable of folding a blade body such as a saw blade or a cutting blade into a handle body.

[0002]

[Prior art]

 As the foldable blade, a holding member having guide surfaces facing each other inside and a blade body rotatably pivoted between a fully open position and a fully closed position by being sandwiched between both guide surfaces of the holding member. , The retaining member is pivotally attached to the blade back in a fully open position of the blade so as to be disengageable from the blade back, and is normally attached to the holding member and a holding lever that is biased in the direction of engagement with the blade back. It is already known to have a handle body for accommodating the blade body at the fully closed position of the body.

However, in the above-mentioned prior art, since the holding member is formed by stopping two plates in parallel, a lot of man-hours are required in the manufacturing process, and the opening / closing operation of the blade body is required. When an external force perpendicular to the blade is applied, both side walls are easily opened partially, which makes the retention of the blade unstable and the retaining lever easily separates from the back of the blade during use. .

[0004]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to provide a foldable blade in which the holding member can be easily manufactured, and the holding member is stably held by the holding member, and the holding lever is difficult to separate from the back of the blade during use. It is in.

[0005]

[Means for Solving the Problems]

 The folding knife according to the present invention is rotatably pivoted between a holding member having opposing guide surfaces inside and a holding member sandwiched between the guide surfaces so as to be rotatable from a fully open position to a fully closed position. Attached to the blade body, a holding member that is releasably attached to the holding member so as to be disengageable from the blade body back at the fully opened position of the blade, and normally biased in the direction of engagement with the blade back, and a holding member And a handle for accommodating the blade body at the fully closed position of the blade body, the holding member is formed of an integral plate material having a U-shaped cross section, and the tip of the retaining lever is It is characterized in that it is engaged with and disengaged from the back of the blade through a guide hole provided in the bent portion.

The proximal end of the retaining lever preferably has a flat surface perpendicular to the blade body, particularly a circular or elliptical flat surface.

[0007]

[Action]

 When the folding blade is used, the blade is opened to the fully opened position with respect to the holding member and the handle, and the tip of the retaining lever is engaged with the back of the blade, so that the blade cannot rotate in the closing direction. Fixed. Further, when the use of the folding blade is finished, the base end of the holding lever is pushed down and the tip of the holding lever rises and is removed from the back of the blade body, and the blade body can rotate in the closing direction.

In the case where the base end of the retaining lever has a flat surface perpendicular to the blade body, when the base end of the retaining lever is pushed down, the thumb easily comes into contact with the flat surface.

[0009]

【Example】

 FIG. 1 is a vertical sectional view of a folding knife according to an embodiment of the present invention in use.

In FIG. 1, a holding member 1 made of a half-folded steel plate has a guide surface 2 facing each other, a longitudinal guide hole 3 is formed near the front end of the bent portion, and a notch is formed at the rear end. A step 4 is bored, and the base end of the blade body 5 is pivotally attached to the lower corner of the front end of the holding member 1 via the connecting shaft 6 while being sandwiched between the two guide surfaces 2. An engaging recess 7 is provided so as to correspond to the inner hole 3 of the bent portion.

Further, a handle body 8 (shown by a chain line) is attached to the holding member 1 by a central mounting shaft 9 and a fixed shaft 10 at an upper corner of the rear end, and the blade body 5 is at the fully open position shown in the figure. When the back end of the base end is locked to the connecting portion 11 at the front end of the bent portion of the holding member 1 and the step 12 on the base end surface is locked to the mounting shaft 9, it does not rotate further clockwise in use. Is held as.

A retaining lever 13 is pivotally attached to the upper corner of the rear end of the holding member 1 via the fixed shaft 10, and an engaging convex portion 14 bent inward is provided at the tip of the retaining lever 13. At the same time, the engaging convex portion 14 is fitted into the engaging concave portion 7 of the blade body 5 through the guide hole 3 of the bent portion of the holding member 1, and the base end of the retaining lever 13 has a substantially circular shape perpendicular to the blade body 5. A pressing portion 15 having a flat surface is provided, a compression coil spring 16 is interposed between the pressing portion 15 and the notch step 4 of the holding member 1, and the engaging convex portion 14 of the retaining lever 13 is The compression coil spring 16 constantly urges the blade body 5 toward the engaging recessed portion 7.

In the configuration of the use state, when the pressing portion 15 of the retaining lever 13 is pushed down by the thumb or the like against the repulsive force of the compression coil spring 16, the engaging convex portion 14 is disengaged from the engaging concave portion 7. At the same time, the blade body 5 can be rotated counterclockwise, and is finally partially housed in the lower edges of the holding member 1 and the handle body 8 as in the conventional method.

[0014]

[Effect of device]

 Since the folding blade according to the present invention is configured as described above, the holding member can be easily manufactured, and the holding member can be stably held by the holding member, and the holding lever can be separated from the back of the blade during use. Has a difficult effect. Further, when the base end of the retaining lever has a flat surface perpendicular to the blade, the detaching operation of the retaining lever and the back of the blade becomes easy.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a folding blade according to an embodiment of the present invention in use.

[Explanation of symbols]

 1 Holding Member 2 Guide Surface 3 Guide Hole 5 Blade 8 Handle 13 Locking Lever

Claims (2)

[Scope of utility model registration request] 1. A holding member having opposed guide surfaces inside, and a blade body that is rotatably pivoted between a fully open position and a fully closed position by being sandwiched between both guide surfaces of the holding member. At the fully open position of the blade body, the holding member is pivotally attached to the blade body back so as to be disengageable, and is normally attached to the holding member, and the holding lever is urged in the direction of engagement with the blade body back. And a handle for accommodating the blade at the fully closed position, the holding member is formed of an integral plate material having a U-shaped cross section, and the tip of the holding lever is provided in the bent portion of the holding member. A foldable blade characterized by being engaged with and disengaged from the back of the blade body via. 2. The folding blade according to claim 1, wherein the base end of the retaining lever has a flat surface perpendicular to the blade body.