CN102528777A

CN102528777A - Anti-breakage tool

Info

Publication number: CN102528777A
Application number: CN201010595133XA
Authority: CN
Inventors: 李积回
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-17
Filing date: 2010-12-17
Publication date: 2012-07-04

Abstract

The invention relates to a tool, in particular to an anti-breakage tool. The tool comprises a tool body, wherein the tool body extends backwards to the outside of a tool body; an external handle is arranged outside the tool handle body; the tool handle body comprises a tool handle connecting transitional part and a threaded part; the outside surface of the threaded part has threads; a mounting hole and a connecting hole, which are communicated, are formed in the external handle along a radical direction; the mounting hole and the tool handle connecting transitional part are sleeved together tightly; a bolt is arranged in the connecting hole; and the bolt passes through the connecting hole to be fixed with the threaded part by threads. With improvement in the design of the tool handle, the tail part of the tool is prevented from being broken, and the tool is safer.

Description

Anti-fracture cutter

Technical field

The present invention relates to a kind of cutter, particularly anti-fracture cutter.

Background technology

The round wooden handle cutter is with a long history.Because of no matter round wooden handle is anti-skidding, hold the theory that sensation all has its outstanding performance ergonomic.So, be leveraged to the present from Gu always.

Tradition system cutter adopts the lower steel of carbon containing to make cutter hub more, and " going into steel " or carburizing are adopted in the edge position.Insert handle of a knife position is adopted to forge and is processed fine stern, penetrates behind the wooden handle the fixing wooden handle of tail end bending.This structure generally adopts at round wooden handle cutter in the market, and there is following problem in this structure:

1, the gap that exists the service life of wooden handle and cutter hub is too big.Because wooden handle will have antiskid function, the timber material that is adopted generally can very hard (density is high) timber, but with the general wooden timber that loosens.Therefore, wooden handle will " rot " in the short time after use.After handle of a knife had rotted, cutter hub did not have handle just can not use.

2, because the cutter tail end is wanted fixedly wooden handle of bending, therefore can not be thick excessively, the bending part is because cutter uses post-etching (iron erosion) oxidation, and handle of a knife and cutter break away from when insufficient strength." fly out " and cause danger as when thing is cut in use, breaking away from then cutter hub.

3, the modern martensitic stain less steel that adopts is made the cutter hub material more.This material is through quenching, when the cutter tail forges heating or forge cause workpiece temperature to be elevated to austenitizing in the process after, the cutter hub material will change martensite.Poor toughness behind the transformation martensite fractures in the time of will bending dead knife wooden handle easily, perhaps cracks to have potential safety hazard.

Summary of the invention

In order to solve the technical problem that prior art exists, the present invention provides a kind of anti-fracture cutter, to solve cutter easily in the technical problem of tail break.

The technical scheme that the present invention adopts is following:

A kind of anti-fracture cutter, it comprises cutter hub, cutter hub extends back the handle of a knife body; Handle outside outside the handle of a knife body, being provided with, handle of a knife body comprise that handle of a knife connects transition part and screw thread portion, and screw thread portion outer surface is provided with screw thread; Outer handle radially is provided with the placement hole and the connecting hole of mutual perforation; Placement hole is connected the tight socket of transition part with handle of a knife, be provided with bolt in the connecting hole, and bolt passes connecting hole and screw thread portion is fixed through screw thread.

As a kind of preferred version; Said connecting hole comprises extension and card-tight part; The cross-sectional area of card-tight part is greater than extension; Bolt comprises interconnective top and body, and the top of card-tight part and bolt closely cooperates and tightens outer handle, and the body of bolt passes extension and screw thread portion is fixed through screw thread.

Further, the afterbody of said bolt has the cavity with screw thread portion threads engaged, and said cavity inner surface is provided with the screw thread that cooperates with screw thread portion, and screw thread portion and cavity are fixed through screw thread.

As a kind of preferred version, the screw thread of said screw thread portion outer surface is two pitch threads, and the screw thread of said bolt be pair pitch threads.

As a kind of preferred version, said cutter also comprises the cutter hoop that is arranged on outer handle outer surface.

Further, said cutter hoop is arranged on the connecting portion of outer handle and handle of a knife body, and an end is connected with outer handle, and the other end is connected with cutter hub.

Further again, said cutter hoop is arranged on outer handle is connected transition part with handle of a knife connecting portion.

As a kind of preferred version, it is long-pending greater than the screw thread cross section that cutter hub connects the transition part cross-sectional area.

Preferably, said cutter hub is a martensitic stain less steel.

The present invention has prevented cutter in tail break through the improvement to the handle of a knife design, has improved the security of cutter.

Description of drawings

Fig. 1 is the total figure of embodiment of the invention tool structures;

Fig. 2 is the structure chart of embodiment of the invention screw thread portion;

Fig. 3 is the vertical view of embodiment of the invention cutter hoop;

Fig. 4 is the front view of embodiment of the invention cutter hoop;

Fig. 5 is the left view of embodiment of the invention cutter hoop;

Fig. 6 is the profile of the outer handle of the embodiment of the invention;

Fig. 7 is the stereogram of the outer handle of the embodiment of the invention;

Fig. 8 is the left view of the outer handle of the embodiment of the invention;

Fig. 9 is the right view of embodiment of the invention bolt;

Figure 10 is the cutaway view of embodiment of the invention bolt.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed explanation.

Be illustrated in figure 1 as the total figure of structure of the embodiment of the invention.

A kind of anti-fracture cutter, it comprises cutter hub 1, cutter hub 1 extends back the handle of a knife body; Handle 3 outside outside the handle of a knife body, being provided with, outer handle 3 are wooden handle in the present embodiment, and the handle of a knife body comprises that handle of a knife connects transition part 5 and screw thread portion 6; Screw thread portion outer surface is provided with screw thread; Like Fig. 1 and Fig. 6～shown in Figure 8, outer handle 3 radially is provided with the placement hole 7 and connecting hole 8 of mutual perforation, and placement hole 7 is connected transition part 5 tight sockets with handle of a knife; Be provided with bolt 4 in the connecting hole 8, bolt 4 passes connecting hole and screw thread portion 6 and fixes through screw thread.

Like Fig. 1, Fig. 6, Fig. 9 and shown in Figure 10; Said connecting hole 8 comprises extension 81 and card-tight part 82, and the cross-sectional area of card-tight part 82 is greater than extension 81, and bolt 4 comprises interconnective top 41 and body 42; Because the cross-sectional area of card-tight part 82 is big; Therefore card-tight part 82 closely cooperates with the top 41 of bolt, and through the outer handle 3 of top 41 chuckings, the afterbody of bolt has the cavity 43 with screw thread portion 6 threads engaged; Cavity 43 inner surfaces are provided with the screw thread that cooperates with screw thread portion 6, and screw thread portion 6 and cavity 43 are fixed through screw thread.

Cutter hub and handle of a knife adopt the bolt fastening structure that can roll over dress, and replaceable wooden handle makes the life-span of handle of a knife and cutter hub equal.And after cutter is scrapped, wooden handle is separated with cutter hub, be convenient to the recycling that circulates, reach environmental requirement.Simultaneously, because the employing bolt arrangement, change cutter hub afterbody forges the fragility influence and the afterbody bending of processing the martensite phase transformation that causes and needs the little problem of volume, thereby the intensity of hilt is improved greatly, cuts thing " fly cutter " when difficult drop-off or use and causes danger.

It is meticulous that former cutter tail is eliminated in the design of bolt, bending insufficient strength that toughness is not enough, and the main change of aspect such as handle of a knife is insecure, existing metal fittings carry out supporting on the customizable or market.It makes the more traditional raising greatly of tensile strength of handle of a knife and cutter hub, and can change the thickness design according to the cutter of different serviceabilities, reaches different intensity.Client (consumer) changes wooden handle or fastening very simple when using, and does not need specialty and specific purpose tool to operate.

Wherein handle of a knife connection changeover portion 5 is the stressed in use bigger positions of cutter hub and hilt, and the long-pending relative screw thread of this segment body portion 6 is thick, bending resistance, and fatigue resistance improves.

As shown in Figure 2, screw thread portion 6 mainly plays the role of fastening, and for ease of assembling, adopts two tooth screw Design and Machining.The corresponding also two tooth screw designs of bolt.

Like Fig. 1 and Fig. 3～Fig. 5, cutter also comprises the cutter hoop 2 that is arranged on outer handle 3 outer surfaces, and cutter hoop 2 is arranged on the connecting portion of outer handle 3 and handle of a knife body, and promptly outer handle 3 is connected the connecting portion of transition part 5 with handle of a knife, and cutter hoop 2 one ends are connected with outer handle 3, and the other end is connected with cutter hub 1.

No matter the cutter hoop is traditional or the existing market circulation, the round wooden handle cutter has, and its effect mainly is the intensity of strengthening wooden handle; Because cutter hoop 2 is arranged on outer handle 3 is connected transition part 5 with handle of a knife connecting portion, so cutter hoop 2 also plays the point action that contacts with cutter hub 1 but in embodiments of the present invention; When making the firm wooden handle 3 of bolt 4, cutter hoop 2 is set in wooden handle 3 appearances, and this position is strengthened; Prop up then and withstand on cutter hub 1, making hilt is that wooden handle 3 is firm.

As stated, can realize preferably that just the present invention, the foregoing description are merely preferred embodiment of the present invention, be not to be used for limiting practical range of the present invention; Be that all equalizations of doing according to content of the present invention change and modification, all contained by claim of the present invention scope required for protection.

Claims

1. one kind resists the fracture cutter, and it comprises cutter hub (1), and cutter hub (1) extends back the handle of a knife body; Handle (3) outside outside the handle of a knife body, being provided with; It is characterized in that the handle of a knife body comprises that handle of a knife connects transition part (5) and screw thread portion (6), screw thread portion outer surface is provided with screw thread; Outer handle (3) radially is provided with the placement hole (7) and connecting hole (8) of mutual perforation; Placement hole (7) is connected closely socket of transition part (5) with handle of a knife, be provided with bolt (4) in the connecting hole (8), and bolt (4) passes connecting hole and screw thread portion (6) is fixed through screw thread.

2. cutter according to claim 1; It is characterized in that; Said connecting hole (8) comprises extension (81) and card-tight part (82), and the cross-sectional area of card-tight part (82) is greater than extension (81), and bolt (4) comprises interconnective top (41) and body (42); The top (41) of card-tight part (82) and bolt closely cooperates and tightens outer handle (3), and the body (42) of bolt (4) passes extension (81) and fixes through screw thread with screw thread portion (6).

3. cutter according to claim 2; It is characterized in that; The afterbody of said bolt has the cavity (43) with screw thread portion (6) threads engaged, and said cavity (43) inner surface is provided with the screw thread that cooperates with screw thread portion (6), and screw thread portion (6) is fixed through screw thread with cavity (43).

4. cutter according to claim 1 is characterized in that, the screw thread of said screw thread portion outer surface is two pitch threads, and the screw thread of said bolt be pair pitch threads.

5. cutter according to claim 1 is characterized in that, said cutter also comprises the cutter hoop (2) that is arranged on outer handle (3) outer surface.

6. cutter according to claim 5 is characterized in that, said cutter hoop (2) is arranged on the connecting portion of outer handle (3) and handle of a knife body, and an end is connected with outer handle (3), and the other end is connected with cutter hub (1).

7. cutter according to claim 6 is characterized in that, said cutter hoop (2) is arranged on outer handle (3) is connected transition part (5) with handle of a knife connecting portion.

8. cutter according to claim 1 is characterized in that, cutter hub connects transition part (5) cross-sectional area greater than screw thread portion (6) cross-sectional area.

9. according to each described cutter of claim 1～8, it is characterized in that said cutter hub is a martensitic stain less steel.