CN1305406A

CN1305406A - Folding knife

Info

Publication number: CN1305406A
Application number: CN 99807208
Authority: CN
Inventors: 丹尼尔·J·达格代尔
Original assignee: ATEZHOU HOLDING Co
Current assignee: ATEZHOU HOLDING Co
Priority date: 1998-05-08
Filing date: 1999-04-30
Publication date: 2001-07-25
Also published as: CA2333543A1; WO1999058302A8; EP1079956A1; EP1079956A4; WO1999058302A1

Abstract

A folding knife (10) includes a handle (12) and a blade (14) pivotally coupled to the handle (12). The handle (12) has first and second ends (16, 18) and a pair of side walls (20) extending between the two ends (16, 18). The handle (12) also includes a longitudinal slot (22) disposed between the pair of side walls for housing the blade (14). The blade (14) is pivotally coupled to the first end (16) of the handle (12) and is rotatable between a folded position, in which the blade (14) is situated in the longitudinal slot (22), and an extended position. Formed in a shank portion (46) of the blade (14) is an opening (48) for receiving a user's finger and improving the user's control of the knife (10) during a cutting operation.

Description

Jackknife

Invention field

The present invention relates to a kind of small instruments and tools, as cutter or saw with utensil.Say that more particularly the present invention relates to a kind of collapsible cutter, this cutter has a finger-hole, when cutting, this hole can make the user control cutter better.

Background of invention

We have understood the small instruments and tools that resembles collapsible cutter and saw and so on.Generally speaking, these instruments comprise shell and connected blade or saw blade, and wherein, this shell also can be used as handle.Blade is at one end pivotally connected with shell, and can move between stored position and expanded position.When not using, blade can be compressed into shell, when blade during, can cut at expanded position.

A shortcoming of these existing small instruments and tools is often to be difficult to control.When size of attempting to dwindle these small instruments and tools and weight, the size that also must dwindle handle, so the bigger more difficult handle of catching of user of hand.If the user can not catch the handle of small instruments and tools firmly, this user just can not control cutting operation preferably, and may damage workpiece.According to above-mentioned, a small instruments and tools need be provided, the user can control this small instruments and tools better in operating process.

Summary of the invention

According to an aspect of the present invention, jackknife comprises handle and the blade that is connected with handle.Handle comprises first end and second end and a pair of sidewall that stretches between two ends.Handle also comprises a cannelure, and this groove is positioned between this oppose side wall.Blade is connected with first end pivoting of handle.Blade comprises blade and shank portion, can rotate between folding position and expanded position, and blade is positioned at the cannelure of handle when the folding position.Shank portion at blade is formed with a perforate.This perforate is suitable for accepting user's finger, thereby in cutting operation, the user can control cutter better.

According to of the present invention one aspect in addition, jackknife comprises handle, blade and locking mechanism.Handle comprises first end and second end and a pair of sidewall of expanding between two ends.Handle has a cannelure that is positioned between sidewall.In addition, handle has a perforate, and this perforate is arranged in this oppose side wall near first end.Blade comprises blade and shank portion, and blade is connected with first end pivoting of handle.Blade can rotate between folding position and expanded position, and blade is positioned at the cannelure of handle when the folding position.The shank portion of blade is formed with a perforate, and the hole in the sidewall of this perforate and handle matches.These perforates can be suitable for accepting user's finger, thereby, when cutting operation, can improve the control of user's tool setting.Locking mechanism is connected with handle, can be meshed with blade, thereby blade can be fixed on folding position or expanded position.

According to a further aspect in the invention, provide a kind of improved jackknife.This cutter comprises handle and the blade pivotally connected with it.Blade comprises blade and shank portion.Improvement part comprises the perforate that at least one forms at the shank portion of blade.This at least one perforate is suitable for accepting user's finger, therefore can improve the control of user's tool setting in cutting operation.

By the introduction of the following drawings, detailed explanation and appended claim, those skilled in the art will be well understood to other characteristics of the present invention and advantage.The detailed description of accompanying drawing

Describe in detail in conjunction with the drawings and can understand the present invention more fully, wherein identical label is represented identical parts, wherein:

Fig. 1 is the perspective view according to jackknife of the present invention, and wherein this cutter contains the pivotally connected blade of (solid line) and expanded position (dotted line) in the folding position;

Fig. 2 is the three-dimensional exploded view of the jackknife of Fig. 1 blade when expanded position;

Fig. 3 is the cross-sectional view along the 3-3 line of Fig. 1.

The detailed description of embodiment

Referring to Fig. 1 and Fig. 2, the invention provides a kind of example small form factor instrument such as jackknife 10.Jackknife 10 comprises shell or handle 12 and is used for the blade 14 of cut workpiece (not shown).Though blade 14 is exemplified as blade, also can be saw blade.Blade 14 is pivotally connected with handle 12, and when not using blade, it can be kept in the handle 12.

Handle 12 comprises first end 16 and second end 18.Handle 12 also comprises pair of sidewalls 20, and this sidewall is in first end 16 and 18 expansions of second end.Handle 12 is preferably by can forming by durable plastic material, and available injection molded method or other method form.20 of sidewalls at handle 12 have a cannelure 22.When blade 14 during at stored position, as shown in Figure 1, cannelure 22 can be accepted blade 14.

Handle 12 has top edge 24 and feather edge 26, and these two edges expand to second end 18 from first end 16.In a preferred embodiment, top edge 24 is structurally curved, and is tapered towards second end 18, and converges at this and feather edge 26.Feather edge 26 has the approaching curved portion 28 of one and first end 16 and near the straight line portion substantially 30 of second end 18.The curved portion 28 of feather edge 26 comprises a groove 32.When blade during at stored position, but by these groove 32 contactor blades 12.In addition, when blade 14 during at the expanded position shown in Fig. 1 dotted line, groove 32 provides mechanical support point, and when the user took cutter 10, its finger can be against this strong point.

As shown in Figure 2, the sidewall 20 of handle 12 has a perforate 34, and this perforate is used for accepting bearing element 36.Bearing element 36 is assemblied on the handle 12 and by retainer ring 38 and is fixed in its position.In a preferred embodiment of the invention, bearing element 36 resembles a short tube, and its longitudinal axis along bearing element 36 is formed with a perforate 40.At the perforate 34 at sidewall 20 places and the perforate 40 coaxial and enough forefinger (not shown) that can accept the user greatly at bearing element 36 places, therefore, in cutting operation, the user can catch and control jackknife firmly.

First end 16 of blade 14 and handle 12 is pivotally connected and around bearing element 36 rotations.Blade 14 is preferably made by durable, corrosion-resistant material as stainless steel and so on, can form by casting or other production method.Blade 14 comprises working portion 42 and the shank portion 46 with blade 44.The shank portion 46 of blade 14 also is formed with a perforate 48, and bearing element 36 extends by its perforate.In a preferred embodiment of the invention, the perforate of the sidewall 20 of handle 12 34 matches with the perforate 48 of the shank portion 44 of blade 14, and two perforates 34 and 48 coaxial with the perforate 40 of bearing element 36 (Fig. 3).Therefore, blade 14 is around axle 50 rotations, and extend at this center by perforate 34,40 and 48.Jackknife 10 also can comprise belt clamp 66, and this belt clamp is installed in handle 12 places around the bearing element 36, is connected with the belt (not shown) for making cutter 10.

Jackknife 10 also comprises locking mechanism 52 (see figure 1)s, and wherein locking mechanism is installed on the handle 12.Locking mechanism 52 is meshed with the groove 54 (Fig. 2) that shank portion 46 places of blade 14 form, so that blade 14 is fixed on folding position or expanded position.As shown in Figure 2, these grooves 54 are positioned at the edge of shank portion 46 and radially separate around perforate 48.

Fully show the part of locking mechanism 52 among Fig. 2, this locking mechanism comprises locking pin 56, and this locking pin has one 58 and at the major part 60 of axle 58 1 ends.Spring 62 and alignment pin 64 are installed on the axle 58.Alignment pin 64 is positioned at the end of the axle 58 relative with major part 60, by spring 62 its biasing is meshed with the groove 54 of the shank portion 46 of blade 14.Therefore in order to loosen blade 14 from latched position, the user can push the major part 60 of locking pin 56, makes alignment pin 64 and corresponding grooves 54 break away from engagement, thus user's handle 12 rotating blades 14 relatively.

Therefore, the operation of jackknife 10 is as follows.When time spent not, blade 14 is in the cannelure 22 of handle 12, and locking mechanism 52 makes blade 14 at stored position.In order to launch blade 14, push locking pin 56, make alignment pin 64 and groove 54 break away from engagement.The user can launch blade 14 by part and relative handle 12 rotating blades 14 of catching the blade 14 that is exposed by groove 32 then.After blade 14 was fully launched, locking mechanism was meshed with blade 14 automatically, because spring 62 impels alignment pin 64 to enter in the groove 54.Therefore, blade 14 is locked in expanded position.In cutting operation, the user catch handle 14 simultaneously forefinger pass the perforate stretching, extension of bearing element 36 and middle finger against groove 32.Therefore jackknife 10 can make the user control cutter better because of the such structure of stable and firm handle 14 is arranged.By pressure-locking mechanism 52 and rotating blade 14, blade 14 can be stored in the cannelure 22 of handle 12.

It should be understood that foregoing description is the preferred embodiments of the present invention, but the present invention's form that be not limited to describe or that provide.For example, though the preferred embodiments of the present invention disclose a kind of jackknife, wherein for user's finger, blade rotates around perforate, and blade also can not need to rotate around finger-hole.In addition, can only on one of blade or handle, finger-hole be arranged.Also can provide more perforate to adapt to two or more fingers.And, be anticipated that, also can use other locking mechanism to be connected blade is fixed on storage or expanded position with cutter.These or other modification of being made in circuit elements design and arrangement does not depart from the scope that the appended claim of the present invention is described.

Claims

1. jackknife, it comprises:

Handle, this handle contain first and second ends and a pair of sidewall that stretches between two ends, have cannelure between this oppose side wall; With

Blade, this blade is connected with handle pivot also and can rotates between folding position and expanded position at first end, blade is positioned at cannelure in the folding position, described blade has blade and shank portion, the shank portion of blade is formed with a perforate, in order to the finger of accepting the user and the control that can improve user's tool setting in cutting operation.

2. jackknife as claimed in claim 1, wherein said handle comprise the perforate that this oppose side wall place near first end forms, and when blade during at expanded position, this hole and blade perforate match.

3. jackknife as claimed in claim 2, wherein said blade is around the axle pivot rotation of extending by described perforate center.

4. jackknife as claimed in claim 1, wherein said handle also comprises locking mechanism, in order to blade is fixed on folding or expanded position.

5. jackknife as claimed in claim 4, the shank portion of wherein said blade have at least one groove that forms in its edge, when blade during at folding or expanded position, and described locking mechanism and described at least one engagement.

6. jackknife as claimed in claim 5, wherein said locking mechanism comprises locking pin and spring, described spring makes locking pin biasing and described at least one engagement.

7. jackknife as claimed in claim 6, wherein said spring is the compression spring, described locking pin is included in the axle that first end has a major part and an alignment pin is arranged at second end, spring is positioned on the axle between major part and alignment pin, and described alignment pin can move into and shift out the engagement with described at least one groove of blade.

8. jackknife as claimed in claim 5, wherein said blade comprise two grooves, and it radially is positioned at the tapping around blade.

9. jackknife as claimed in claim 1, wherein said pair of sidewalls are included in the groove that supports finger in the cutting operation, and this groove is positioned at its feather edge place.

10. jackknife, it comprises:

Handle, this handle have first and second ends and a pair of sidewall that stretches betwixt, and this oppose side wall place that has cannelure and close first end between this oppose side wall is formed with a perforate.

Blade, this blade is connected with handle pivot also and can rotates between folding position and expanded position at first end, be positioned at the cannelure of handle at the folding position blade, described blade has blade and shank portion, shank portion is formed with a perforate and matches with the perforate of handle, and described perforate is used for accepting user's finger and can improving the control of user in the cutting operation tool setting; With

Locking mechanism, in order to blade is fixed on position folding or that launch, described locking mechanism is connected with described handle and meshes with described blade.

11. jackknife as claimed in claim 10, wherein said blade is around the axle pivot rotation of extending by described perforate center.

12. jackknife as claimed in claim 10, the shank portion of wherein said blade have at least one groove that forms in its edge, described locking mechanism and described at least one engagement are to guarantee that blade is at folding or expanded position.

13. jackknife as claimed in claim 12, wherein said locking mechanism comprises locking pin and spring, and described spring makes the locking pin biasing, with described at least one engagement.

14. jackknife as claimed in claim 13, wherein said spring is the compression spring, described locking pin is included in the axle that first end has a major part and an alignment pin is arranged at second end, spring is positioned on the axle between major part and alignment pin, and described alignment pin can move into and shift out the engagement with described at least one groove of blade.

15. jackknife as claimed in claim 10, wherein said pair of sidewalls is included in the groove that can support finger in the operating process, and this groove is positioned at its bottom margin place.

16. improved jackknife, it has one handle and the blade that is connected with handle pivot, this blade comprises blade and shank portion, improved part comprises at least one perforate that forms at the shank portion of blade, the control that this at least one perforate is used for accepting user's finger when cutting operation and improves user's tool setting.

17. require 16 described jackknifes as profit, wherein said handle comprises pair of sidewalls, the perforate of described at least one blade matches with at least one perforate that forms at this oppose side wall place, and described blade can be around the axle pivot rotation of extending by described perforate center.

18. jackknife as claimed in claim 17, wherein said pair of sidewalls are included in the groove that supports finger in the cutting operation, this groove is positioned at its bottom margin place.