JPH0647214Y2 - Folding knife - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a folding blade in which a blade body can be folded into a handle.

[Prior art]

In various conventional folding blades such as sickles and saws, the safety device that fixes the blade body drawn out from the handle to the handle in use state is a safety device when assembled due to the tolerance of parts. The engagement with the blade was often loose, and the engagement was loose. If such rattling occurs during use, it has been misunderstood as a defective product because it gives a user discomfort. However, this phenomenon is not left as if it was not a defective product, and if such rattling is left as it is, looseness of engagement will be worn out and the safety device will be easily disengaged from the blade body and suddenly during use. There is a risk of a large accident in which the blade body is disengaged and the blade body moves toward the handle, damaging the hand holding the handle. This is the same even when folded, and since the blade body is not locked to the handle, the blade body suddenly jumps out of the handle and injured a person or damaged an article in many cases.

[Problems to be solved by the device]

Conventional folding knives are used in an unstable state because there is no safety device that can accurately and reliably fix the blade to the handle regardless of whether it is used or not. Injuries often caused serious injuries, giving the user the impression that folding knives are dangerous.

The present invention aims to solve the above problems and provide a safe folding blade.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention supports the blade body (2) by the shaft (4) on the blade body holding portion (3) of the handle (1) and restricts the blade body holding portion (3). By fixing the blade body (2) to the blade body holding portion (3) by (5), the blade body (2)
A handle (1) of a blade (2) in which a blade can be freely folded so that the blade does not move relative to the blade holding part (3).
The safety device for restricting delusions with respect to the body has a restricting body (5) fixed to the shaft (4) of the handle (1) so as to freely swing, and an operating surface (52) facing the blade body ( ₂ ) is a blade. It becomes an inclined surface which is not parallel to the body (2) and faces the rotation direction of the regulating body (5), and the regulating body (3 ₁ ) on the side body (3 ₁ ) of the blade holding section (3) facing the regulating body (5) ( 5) A ball-shaped regulator (5 ₁ ) that can freely move up and down in the direction of 5) is provided at each end of the ball-shaped regulator (5 ₁ ) on the operation surface (5 ₂ ) side and the blade (2) side. There side plates (3 ₁₎ was支受with the side plate (3 ₁₎ so as to protrude from the further blade (2) blade body when pulled out from the bunch handle (1) beaded Kiseiko (5 ₁₎ (2) concave hole (7) of the blade body of the relationship that the diameter of the ball-shaped Kiseiko (5 ₁₎ greater than the diameter of the concavity to the ends of the side rides concave hole (7) (7) (2) And the restriction body (5) is an engaging portion of the shaft (4) The opposite end portion of the ₍₃₎ a bunch handle (1)
It is loosely engaged with the support body (8) provided on the upper part of the handle (1) to prevent it from rising from the handle (1), and the regulating body (5) is fixed to the handle (1) to swing the regulating body (5). A fixing body (6) consisting of a set screw for regulating the swing of (5) is provided on the regulation body (5) and is fixed to the side plate (3 ₁ ).

[Operation] The safety device of the present invention for accurately and surely regulating the blade body (2) with respect to the handle (1) uses the blade body (2) fixed to the blade body holding part (3) by the shaft (4). In order to clarify the state, the back (2 ₁₁ ) of the base (2 ₁ ) of the pull-out blade (2) is brought into contact with the back contact (3 ₃ ) of the blade holding section (3) while pulling out from the handle (1). , When the side plates (3 ₁ ) and (3 ₂ ) are held together, the blade body (2) is completely pulled out to the outside of the handle (1) and is restricted by the back contact (3 ₃ ) and rotates further. is not.
That is, the blade body (2) is in a state capable of cutting an object. However, in this state, since the blade body (2) is not provided with a safety device for the blade body holding portion (3), there is a risk that the blade body (2) may move delusionally such as returning to the handle (1) side. . Therefore, a safety device is one that secures the safety by controlling the delusion of the blade body (2) by the blade holding part (3).

The safety device regulating body (5) regulating body Kiseiko (5 ₁₎ having a (5) is beaded Kiseiko (5 ₁₎ direction towards and ball shaped actuating exerting a Kiseiko (5 ₁ ) and blade body (2) of the base (2 ₁₎ riding on the concave hole (7) base (2 ₁₎ strongly blade body by contact of (2) is firmly times with blade clamping unit (3) The movement is regulated, and the regulation can be performed without causing the slight movement.

Furthermore, the regulation body (5) itself should not be lost.
So that it can be fixed to the handle (1) by the fixing body (6).
On the contrary, when the blade body (2) is folded with respect to the handle (1), the regulation of the fixing body (6) to the handle (1) is loosened and the regulation body (5) is operated in the direction of releasing the regulation. When this action loosens the engagement between the restrictor (5 ₁ ) and the base portion (2 ₁ ) of the blade body (2), the blade body (2) is released from the regulation and becomes movable, and thereafter the blade body (2) is moved. It can be stored in the handle (1) by rotating the handle in the direction of the handle (1).

To further describe the operation of the safety device described above, the base (2 ₁ ) of the blade (2) in the blade holding portion (3) is held between the side plates (3 ₁ ) and (3 ₂ ) and the shaft is held. Since it is supported by (4), it can rotate. The range of rotation is the range in which the blade body (2) is folded from the handle (1) side and is ready to be used by being pulled out from the handle (1) side. When pulled out from ( ₁ ), the back portion (2 ₁₁ ) of the base portion (2 ₁ ) of the blade body (2) comes into contact with the back contact (3 ₃ ) of the blade body holding portion (3) and further rotation is restricted. It is possible to prevent the blade body (2) from rotating due to the reaction of the object to be cut during the cutting operation. However, since the regulation of the rotation of the blade body (2) with respect to the handle (1) in the folding direction cannot be regulated by the blade body holding portion (3), the regulation of the retracting rotation is accurate and secure. aught to be such without the looseness occurs in the regulation, regulating body (5) Kiseiko (5 ₁₎ of the blade when operated in a direction to restrict the rotation of (2) Kiseiko (5 ₁₎ Is a regulatory body (5)
Is moved to the side of the blade body (2) and is strongly engaged with and strongly locked to the blade body (2).

Further engagement between Kiseiko ((5 ₁₎ and blade body (2) is Kiseiko (5 ₁₎ the operation surface opposing the Kiseiko ((5 ₁₎ of the regulating body (5) above it ( The blade body (2) pushed down by 5 ₂ )
Is a powerful engagement without loose engagement to be pressed in the direction recessed hole (7) Kiseiko and ((5 ₁₎ of the recessed holes while riding the recessed hole (7) (7). The reverse Even when the regulation body (5) releases the regulation of the blade body (2), the regulation can be easily released by weakening the pressing of the regulation body (5) to the regulation body ((5 ₁ )).

〔Example〕

 An embodiment of the present invention will be described with reference to the accompanying drawings.

Although the embodiment shown in the drawings is a sickle, it may be a saw or the like, and the point is not limited to the above-mentioned embodiment as long as it is a foldable blade. In the illustrated embodiment, (1) is a handle formed of wood, plastic or the like, which has a blade accommodating groove (1 ₁ ) in the body.

(2) is a blade of a sickle, (3) is a blade holding part made of plastic, and the plate thickness of the base (2 ₁ ) of the blade (2) following the handle engaging part (3 ₄ ). The back plate (3 ₃ ) is followed by the side plates (3 ₁ ) and (3 ₂ ) with a fairly or slightly narrower space, and the blade body (2) holds the base (2 ₁ ) of the blade body. Between the side plates (3 ₁ ) and (3 ₂ ) of the part (3), the back part (2 ₁₁ ) is loosely fitted so as to contact the back contact (3 ₃ ) (Figs. 1, 2, 3). Further, the base portion (2 ₁ ) of the blade body (2) is rotatably attached to the blade body holding portion (3) by a shaft (4) (FIGS. 1, 2, and 4). ).

Although the shaft (4) is a screw in the embodiment, it may be a pin as long as the blade body (2) can be pivotally supported by the blade holding portion (3) so as to be pivotally supported. The blade body (2) can be replaced with a screw means instead of a screwed one.

(5) is a restricting body for restricting the rotation of the blade body (2), and an upper end portion thereof is swingable with respect to the blade body holding portion (3) on the blade body holding portion (3) by the shaft (4). Pivoted and regulated (5)
Of Kiseiko (5 ₁₎ and facing the operation surface (5 _2), the regulating body (5) swinging directions by Kiseiko (5 ₁₎ to strongly contact conversely away or to as stepped or sloped or of It has become a surface etc.

The operation surface (5 ₂₎ is not limited to the above embodiment, it is sufficient that Kiseiko (5 ₁₎ can be operated.

(5 ₁₎ is支受in blade body sandwiching portion regulating member (3) operation surface of (5) (5 ₂₎支受hole provided in the opposing portion between (3 ₅₎ in支受hole (3 ₅ ) Is a spherical regulation body that is loosely fitted in the direction of the direction ( ₁ ), and the bottom side of this regulation body (51) is the blade body (2).
When There was a used state is pulled out to the outside of the bunch handle (1), than the diameter of its base (2 ₁₎ of Kiseiko (5 ₁₎ and spherical bored on the facing surface of the Kiseiko (5 ₁₎ andゝNone freely elimination engages the concavity (7) having a small diameter with a diameter, also Kiseiko of (5 ₁₎ of the regulating body (5) and opposite surfaces contrast regulating body (5) operation surface (5 ₂₎ is a disjunction, when contacted Kiseiko (5 ₁₎ and the concave hole (7) forms the dense engagement, when spaced opposite and so engagement becomes loose Things (Fig. 1, Fig. 2,
Figure 5, Figure 7, Figure 8), Although Kiseiko (5 ₁₎ in the embodiment is spherical, the outer, distal end surface may be arcuate rod-shaped body, short concavity (7) to Kiseiko (5 ₁₎ is not acting blindly engagement and detachment can be blade body (2) is to be limited to the embodiments as long as it can be restricted in a state of riding.

A fixing member (6) is provided on the restriction member (5) so that the restriction member (5) is located at a predetermined position and does not move, and is fixed to the handle (1). ) Is provided with a threaded rod and the tip is attached to the handle (1), but the present invention is not limited to these examples, and the point is that the regulating body (5) can be regulated so as not to move against the handle (1). If

(8) is支受body, that the shaft (4) stop portion and opposite end portion (5 ₃₎ to overlap like bunch Pattern (1) in the provided regulation of the regulating member (5) (5) amounting float It regulates. (FIG. 1, FIG. 2, FIG. 7, FIG. 8).

[Effect of device]

In this invention, when the blade body (2) is pulled out to the outside of the handle (1) and put into use, the base portion (2 ₁ ) of the blade body (2) is supported by the blade holding portion (3), so that the base portion (2) is supported. The strength of ₁ ) becomes stronger, and the strength of the base of the blade is weaker in the conventional product, whereas the strength can be maintained. In other words, even with a blade having a small plate thickness, it is possible to use a sharp blade (2) that can sufficiently reinforce the base portion (2 ₁ ) and further increase the sharpness.

Since this blade body (2) can be attached to and detached from the blade body holding portion (3), it can be removed when exchanging the blade or when sharpening the blade, which is convenient for a sickle as in the embodiment. Once obtained, the blade is easy to sharpen and can be sharpened.

Then blade clamping unit (3) to the clamping been blade body (2) includes a base Kiseiko which is支受the blade clamping portion (3) at its base (5 ₁₎ of the Kiseiko (5) ( 2 ₁₎ strongly pushed base (2 ₁₎ to strongly contact the, base de side plate (3 ₂₎ (2 ₁₎
Strongly support. Further, the holding operation of the blade holding portion (3) of the base (2 ₁ ) of the blade (2) can be easily performed only by switching the restricting body (5). The blade body (2) pulled out of the handle is fixed to the handle (1) accurately and surely by the safety device, so that the blade body (2) may unexpectedly return in the direction of the handle (1). There is concern that the blade body (2) can be held by the fixing body (6) if the blade body (2) is not safe, and that the regulation body (5) is also delusional. It will be safe because it is attached to (3).

In addition, the operating surface of the restricting body (5) for operating the restrictor (5 ₁ ) is a step surface having a shallow depth or an inclined surface, so that the base portion (2 ₁ ) of the blade body (2) is held by the blade holding portion. Since the restrictor (5 ₁ ) is continuously pressed against the base (2 ₁ ) when it is fixed to (3), unlike the conventional locking means, there is no rattling.

Also to allow rotation of the release also regulation of the regulating operation surface (5) (5 ₂₎ Kiseiko (5 ₁₎ away from the strong regulation easily solved blade so far (2) .

Furthermore, regulation of the blade body Kiseiko (5 ₁₎ by (5) regulating body when brought into contact with (2) (5) of the raised operating surface by the reaction from Kiseiko (5 ₁₎ (5 ₂₎ It is to prevent the pressing force against the regulator (5 ₁ ) from becoming weaker. The end (5 ₃ ) of the regulator (5) on the opposite side of the shaft (4) to the blade holding part (3) is fixed to the blade holding part (3). When the support body (8) provided on the handle (1) supports the restriction body (5), the restriction body (5) is prevented from being lifted up by whatever force acts, and the rotation of the blade body (2) is restricted. Does not come loose.

Moreover, if the regulating body (5) is the fixing body (6) of the set screw, regulation of the grip (1) of the regulating body (5) can be performed accurately and surely, and the release of the regulation can be performed as accurately as the regulation. You can certainly do it. Furthermore, it is easy to maintain these regulations and the release of regulations.

Then, Kiseiko (5 ₁₎ in arc shape surface facing the spherical or blade body (2), when its diameter set larger than the diameter of the concavity (7), restricting the rotation of the blade (2) Regulatory body (5 ₁ )
When engaged with the recessed hole (7) of the base (2 ₁ ) of the blade (2),
Concave hole spherical regulating body to an open end (7) (5 ₁₎ becomes line contact to ride, good engagement is not generated looseness in the engagement portion because it is strong engagement joined by strong pressure on the contact portion with the can if, by the operation surface (5 ₂₎ inclined surface of the regulating member (5), restricted arc (5 ₁₎ relative to the blade body made of pressing force enables continuous pressing stepless added The effect of optimizing the fixing to the blade holding portion (3) of (2) is achieved.

[Brief description of drawings]

Drawing is a figure showing an example of the present invention, Fig. 1 is a front view of a sickle, Fig. 2 is a side view of a sickle, Fig. 3 is an enlarged end view of a section cut along line I-I, and Fig. 4 is a line taken along line II-II. Enlarged end view of the cutting part Fig. 5 is an enlarged end view of the cutting part of line III-III Fig. 6 is an enlarged end view of the cutting part of line VV Fig. 7 is a front view of a sickle with a folded blade Fig. 8 is a blade FIG. 4 is an enlarged view in which a body-holding portion is broken. 1: Handle, 2: Blade, 2 ₁ : Base, 2 ₁₁ : Back, 3: Blade holding part, 3 ₁ , 3 ₂ : Side plate, 3 ₃ : Back contact, 4: Shaft, 5: Restrictor, 5 ₁ :
Regulator, 5 ₂ : Operation surface, 5 ₃ : Edge part, 6: Fixing body, 7: Recessed hole,
8: Supporter

Claims (1)

[Scope of utility model registration request] 1. A blade body (2) is supported on a blade body holding portion (3) of a handle (1) by a shaft (4), and a blade body holding portion (3).
The blade holding part (3) holds the blade (2) by the restriction body (5).
In a blade that can be freely folded so that the blade body (2) does not move relative to the blade holding part (3) by being fixed to the safety of controlling the delusion of the handle body (1) of the blade body (2) apparatus, bunch handle (1) of the shaft (4) to the fastened rEGULATORY body swings freely (5) there to with blade (2) and facing the operation surface (5 ₂₎ of the blade body (2) It is non-parallel to the inclined surface facing the rotation direction of the regulating body (5), and the regulating body (5) is attached to the side plate (3 ₁ ) of the blade holding section (3) facing the regulating body (5).
The ball-shaped restrictor (5 ₁ ) that allows free ups and downs in the direction of is attached to the operation plate (5 ₂ ) side and the blade (2) side of the ball-shaped restrictor (5 ₁ ) by the side plate. (3 ₁₎ was支受with the side plate (3 ₁₎ so as to protrude from the further blade (2) and bunch pattern (1) from bead when drawn Kiseiko blade (2) side of (5 ₁₎ to end rides concave hole (7) concave hole diameter relationship for the large the Kiseiko pore size than the ball-shaped (7) (5 ₁₎ recessed holes (7) provided in the blade body (2), the regulating body (5) the axis (4) from遊係combined bunch handle (1) on the end portion of the engaging portion and the opposite side ₍₃₎ provided in the bunch handle (1)支受body (8) of A fixing body (6) which serves as a lifting prevention part and which is a set screw for fixing the regulating body (5) to the handle (1) to regulate the swing of the regulating body (5).
Folding tool which is characterized in that it is engaged with the side plate (3 ₁₎ arranged in the regulating body (5).