CN201095114Y

CN201095114Y - Hand knife convenient for replacing blade

Info

Publication number: CN201095114Y
Application number: CNU2007201845443U
Authority: CN
Inventors: 仇建平
Original assignee: HANGZHOU JUXING TECHNOLOGY Co Ltd
Current assignee: Hangzhou Great Star Industrial Co Ltd
Priority date: 2007-10-22
Filing date: 2007-10-22
Publication date: 2008-08-06
Anticipated expiration: 2017-10-22

Abstract

A manual knife which is convenient for the replacement of a blade belongs to the manual knife. The current technical product has the disadvantage of the separation of the blade, which is caused by the mis-operation during utilization. The utility model comprises a tool shank, a tool holder and a blade. The tool holder is connected with the tool shank through a pivot; the blade is installed on the tool holder. The utility model is characterized in that the tool holder comprises a main body, a cover board and a locking rod; the main body is provided with the concave part for the placement and location of the blade; the cover board is pivotally connected on one side of the main body to cover the concave part; a locking part is mounted on the cover board; the locking rod is mounted on the main body with forward and backward movement; an operation key which protrudes on the lateral side and a hiding lock head are mounted on the locking rod; and when the cover board covers the concave part, the lock head corresponds to the locking part on the cover board. The manual knife is convenient for the replacement of a blade, which does not cause the separation of the blade due to the mis-operation by pressing the finger on the tool shank; and the manual knife is favorable for the improvement of the working efficiency.

Description

Be convenient to substitute the hand knife of blade

The utility model belongs to hand knife, a kind of specifically hand knife of being convenient to substitute blade that is made of handle of a knife, knife rest, blade three parts.

By handle of a knife, knife rest, the hand knife that the blade three parts constitute is the version that favored by the user in the market, in order to realize different specification requirements, existing technical scheme has been carried out the corresponding techniques innovation with the corresponding techniques means to the different parts of hand knife, wherein a kind of structure that changes the outfit blade for convenience is: knife rest comprises and has the main body of putting the storehouse, the button that is connected the snap close at main body top and is arranged on the main body top by bearing pin, described main body is connected with handle of a knife through pivot, described blade through put storehouse Hatch Opening forward and be inserted in the described storing storehouse and with the snap close clamping.When changing the outfit blade, button press...withes one's finger down, force snap close to remove the clamping of snap close and blade around bearing pin swing, make blade become free free parts thus, can hand blade front end (being exposed at an end of putting the storehouse) and easily blade be got (pulling out) in the storing storehouse and go out; When turning around the blade that takes off in the back or the storing storehouse of will new blade packing into, push button equally and force snap close to leave position with the blade clamping, go into put storehouse with the blade plug-in mounting that is housed to this moment, unclamping finger makes button reset, snap close can homing be realized the constraint of blade with the blade clamping, the blade location is come off from the storing storehouse preventing.

Yet; use to find that through reality this kind constructed products remains in following defective: the user holds handle of a knife the blade front end is placed when implementing cutting action on the object; in order to increase the contact force of blade front end and object; usually with certain finger presses on knife rest main body top; the application of force direction of this push action is consistent with the direction of pressing keys; usually can touch button and produce maloperation; its consequence is to have removed the clamping of snap close and blade; blade loses constraint and comes off from putting the storehouse; reduce operating efficiency, have potential safety hazard.

Further, the space of putting the storehouse in the said structure is fixed, for can be with blade from being inserted in the described storing storehouse through putting storehouse Hatch Opening forward, the width in this storing storehouse (being the direction size of relative blade thickness) is always greater than blade thickness, therefore blade can be rolled to each side to knife rest in putting the storehouse in use, the degree of accuracy and the accuracy of influence cutting.

The technical assignment of the technical problems to be solved in the utility model and proposition is easily to produce maloperation when overcoming the use that prior art exists and the defective that causes blade to come off, a kind of blade difficult drop-off is provided, avoids the hand knife of being convenient to substitute blade of potential safety hazard, and eliminate the dancing of blade when using on this basis.For this reason, the utility model adopts following technical proposals:

Be convenient to substitute the hand knife of blade, comprise handle of a knife, knife rest and blade, knife rest is connected with handle of a knife through pivot, and blade is installed on the knife rest, it is characterized in that described knife rest comprises main body, cover plate and locking bar: a recess that is used to put with positioning blade is set on the described main body; Described cover plate is articulated in main body one side and covers described recess, and a lock part is set on it; Described locking bar is installed on the main body movably forward and backward, its have give prominence to the side control key and the tapered end hidden, and described cover plate is when covering described recess, this tapered end is corresponding with lock part on the cover plate.

This scheme becomes tool holder designs can separated structures, being about to cover plate is articulated on the main body, make the position of its change and main body by rotating plate, come out so that from wherein taking off blade and described recess is open to wherein putting blade, perhaps described recess is covered so that form the storing storehouse, guarantee safe and reliable the blade formation encirclement that is seated in the recess; Simultaneously, in order to guarantee that cover plate can cover recess reliably and can remove from the position that covers recess where necessary and come out recess is open, the special locking bar that moves forward and backward of on main body, installing, and on locking bar, be provided with to give prominence to and control key and the tapered end hidden in the side, make tapered end corresponding with lock part on the cover plate, when covering recess, make the tapered end of locking bar and lock part is sealed that cover plate is locked at this position, need be with recess is open when coming out, remove the sealed of tapered end and lock part, get final product rotating plate and come out recess is open.The relative prior art of this structure, because mode of operation when having changed the structure of knife rest and having changed the outfit blade, during use by giving prominence to controlling the key control locking bar and can make cover plate be in the state of demand in the side, this structure can not come off from putting in the storehouse because of cause blade to lose constraint by pressure knife, avoided maloperation and potential safety hazard, be beneficial to and increase work efficiency.

As to further the improving and replenishing of technique scheme, the utility model also comprises following additional technical feature, so that select for use when implementing:

Described lock part has a position-limited edge, forms the groove that holds described tapered end in the inboard of this position-limited edge.This structure can be spacing in groove with tapered end, guarantees the matching relationship of tapered end and lock part, cover plate is positioned at the state that covers recess.

In order to reduce to put the thickness in storehouse, can make cover plate be pressed on the blade, prevent that blade from rocking, the bottom surface of described groove is set to the inclined-plane.Perhaps described tapered end is set to the inclined-plane with the position that the bottom surface of described groove contacts.

Described lock part is given prominence to the edge at described cover plate, and the container cavity of a described lock part of correspondence is set on described main body.

Offer chute on the described main body, described locking bar is positioned at this chute.Guarantee the dexterity of action of locking bar thus.

Described locking bar upper support has the spring that described tapered end is applied elastic force to described lock part direction.Guarantee the matching relationship of tapered end and lock part, cover plate is positioned at the state that covers recess.

The end of described tapered end is provided with a sliding surface.So that tapered end and lock part are sealed smoothly.

The top of described knife rest is provided with the press section.Finger presses is exerted pressure to cutter at this position when being used to use cutter.

The beneficial effects of the utility model are: can be installed in blade on the knife rest reliably by cover plate, only otherwise open cover plate, blade just can not break away from knife rest, even producing maloperation by the finger slippage that is pressed in the knife rest top when using cutter also can not open cover plate and cause the blade accidental, avoided potential safety hazard, be beneficial to and increase work efficiency; Split type cutter frame structure helps improving the precision and the handling of product, is convenient to suitability for industrialized production; And cover plate can be with the blade pressure holding in the recess of main body, and the swing when avoiding using guarantees the degree of accuracy and the accuracy of cutting.

Fig. 1 is the outer shape schematic diagram of a preferred embodiment of the utility model.

Fig. 2 is the structural representation (tapered end and lock part are in locked state) that has the knife rest of blade shown in Figure 1.

Fig. 3 is the vertical view of Fig. 2.

Fig. 4 is that the A-A of Fig. 2 is to cutaway view.

Fig. 5 is that the B-B of Fig. 3 is to cutaway view.

Fig. 6 is that the C-C of Fig. 4 is to cutaway view.

Fig. 7 is that the D-D of Fig. 6 is to cutaway view Amplified image.

Fig. 8 is in the schematic diagram of removing locked state for the tapered end and the lock part of structure shown in Figure 2.

Fig. 9 is that the E-E of Fig. 8 is to cutaway view.

Figure 10 is that the F-F of Fig. 9 is to cutaway view.

The process schematic diagram of Figure 11 for cover plate shown in Figure 10 is opened.

Figure 12 is the view after the cover plate of structure shown in Figure 2 is opened.

Among the figure:

The 1-handle of a knife,

11-locatees snap close;

The 2-knife rest,

The 21-main body,

The 21a-tabular component,

The 21b-recess,

The 21c-projection,

The 21d-chute,

The 21e-container cavity,

21f-first location division,

21g-second location division,

The 21k-pivoting hole,

The 21h-side plate,

The 21j-through hole,

The 21i-press section,

The 22-cover plate,

The 22a-lock part,

The 22b-position-limited edge,

The 22c-groove,

The 22d-bottom surface,

The 23-bearing pin,

The 24-locking bar,

24a-controls key,

The 24b-tapered end,

The 24c-sliding surface,

The 25-spring;

The 3-blade,

The 31-draw-in groove;

The 4-pivot.

The technical solution of the utility model is described further with embodiment below in conjunction with accompanying drawing.

As shown in Figure 1, this hand knife of being convenient to substitute blade comprises handle of a knife 1, knife rest 2 and blade 3, wherein:

Has a not shown storing bin on the handle of a knife 1 (referring to Fig. 1), a location snap close 11 is set at the top of handle of a knife 1 to be used for cooperating with the first location division 21f of the knife rest 2 that hereinafter will address or the second location division 21g knife rest 2 is positioned at unlatching or rounding state, because this structure and the technical problems to be solved in the utility model are not contacted directly, therefore do not repeat them here.

Blade 3 top edge interpositions are equipped with two draw-in grooves 31, and this draw-in groove 31 is put the recess 21b (referring to Fig. 5,11,12) that is positioned at the knife rest main body with the protruding 21c clamping realization of the knife rest of hereinafter addressing 2 with blade 3.

Knife rest 2 (referring to Fig. 2～12) comprises main body 21, cover plate 22, locking bar 24 and spring 25, wherein:

Main body 21 assembles (referring to Fig. 4,7,9) by a tabular component 21a with two side plate 21h: the side of tabular component 21a is provided with the shape recess 21b identical with an end of blade 3 and rocks so that blade can be seated in wherein and be unlikely to have too significantly, be provided with protruding 21c outstanding in recess 21b in the upper edge of recess 21b, so that should projection 21c when being seated in blade in the recess 21b snap in the draw-in groove 31 of blade napex, stop blade in recess, to be deviate from; At the position that is positioned on the tabular component 21a above the recess 21b chute 21d and a container cavity 21e are set, two side plate 21h are connected to the both sides of tabular component 21a and chute 21d, container cavity 21e are covered, and offer the through hole 21j of corresponding chute 21d therein on side plate; The first location division 21f and second a plane location division 21g of a groove shape are set, so that cooperate the location of realizing with aforesaid location snap close 11 to knife rest in the rear end of tabular component 21a; Be provided with the press section 21i of large contact surface in tabular component 21a top rear position, finger presses is exerted pressure to cutter at this position when being used to use cutter.

Locking bar 24 is a rod component, the position, intermediate portion be that bulk places in the described chute 21d and by the through hole 21j on the side plate outwards outstanding one control key 24a, its front end is as tapered end 24b and point to described container cavity 21e, and the end of tapered end 24b is a sliding surface 24c;

Spring 25 is the helical form pressure-type, and it is supported on locking bar 24 rear ends and tapered end 24b is remained in the described container cavity 21e;

Cover plate 22 is a tabular component, it is connected the side that tabular component 21a offers recess 21b by a bearing pin 23, thereby can rotate around bearing pin 23, the edge is provided with an outstanding lock part 22a in the top, and this lock part 22a is positioned at aforesaid container cavity 21e so that sealed with described tapered end 24b when cover plate 22 being turned to tabular component 21a position overlapped; In order to increase the sealed degree of reliability between tapered end 24b and the lock part 22a, in the upper edge of lock part 22a a position-limited edge 22b is set, thereby forms the groove 22c that holds described tapered end 24b at the downside of this position-limited edge 22b; The bottom surface 22d of described groove 22c is the inclined-plane.

Above-mentioned knife rest 2 is through by pivot 4 in the pivoting hole 21k of tabular component 21a rear end and realizes knife rest 2 is assemblied on the handle of a knife 1.

The hand knife of said structure, usually under the state, cover plate 22 is positioned at the recess 21b that will put blade with tabular component 21a position overlapped and covers, lock part 22a on the cover plate 22 is positioned at container cavity 21e, under the support of spring 25, the tapered end 24b of locking bar 24 is inserted in the groove 22c of lock part 22a sealed with lock part 22a, cover plate 22 can not and be unlocked around bearing pin 23 rotations, this moment, blade 3 was positioned in the storing storehouse that is formed by recess 21b, and cooperate with bottom surface, the inclined-plane 22d of groove 22c by tapered end 24b, cover plate 22 is pressed on the blade 3, prevents that blade 3 from rocking; When needing to substitute blade, pull back with finger and to control key 24a, overcoming spring 25 elastic force makes locking bar 24 move backward, tapered end 24b is withdrawn from the groove 22c of lock part 22a, remove the sealed relation of tapered end 24b and lock part 22a, get final product rotating plate, come out recess 21b is open, can take out blade this moment, the blade that desire is substituted is seated in the recess 21b afterwards, projection 21c is stuck in the draw-in groove 31, rotating plate 22, returning back to common state promptly finishes the operation that substitutes blade (cover plate 22 goes to lock part 22a when contacting with the inclined plane shape sliding surface 24c of tapered end 24b therebetween, can control key 24a with hand control, the elastic force that can overcome spring 25 makes locking bar 24 move backward, abdicates the position for cover plate 22 resets, when lock part 22a was positioned at container cavity 21e, tapered end 24b was sealed with lock part 22a under the support of spring 25).

Need to prove, above-mentioned preferred embodiment is not the single angle from the technical problems to be solved in the utility model, but from obtain one on the whole the angle of all preferable product the utility model done once in detail introduced, therefore, appear at some technical characterictics in the above-mentioned preferred embodiment, it is not the essential features that solves the technical problems to be solved in the utility model, can not be interpreted as the utility model is comprised the restriction of scope, can also be other versions as handle of a knife to the location locking mode of knife rest, does not repeat them here.

Claims

1, is convenient to substitute the hand knife of blade, comprise handle of a knife (1), knife rest (2) and blade (3), knife rest (2) is connected with handle of a knife (1) through pivot (4), blade (3) is installed on the knife rest (2), it is characterized in that described knife rest (2) comprises main body (21), cover plate (22) and locking bar (24): a recess (21b) that is used for storing and positioning blade (3) is set on the described main body (21); Described cover plate (22) is articulated in main body (21) one sides and covers described recess (21b), and a lock part (22a) is set on it; Described locking bar (24) is installed on the main body (21) movably forward and backward, it has the tapered end of giving prominence in the side (24b) of controlling key (24a) and hiding, and when described cover plate (22) covered described recess (21b), this tapered end (24b) was corresponding with lock part (22a) on the cover plate.

2, the hand knife of being convenient to substitute blade according to claim 1 is characterized in that described lock part (22a) has a position-limited edge (22b), forms the groove (22c) that holds described tapered end (24b) in the inboard of this position-limited edge (22b).

3, the hand knife of being convenient to substitute blade according to claim 2, the bottom surface (22d) that it is characterized in that described groove (22c) is the inclined-plane.

4,, it is characterized in that described tapered end (24b) is the inclined-plane with the position that the bottom surface (22d) of described groove contacts according to claim 2 or the 3 described hand knifes of being convenient to substitute blade.

5, according to claim 1, the 2 or 3 described hand knifes of being convenient to substitute blade, it is characterized in that described lock part (22a) gives prominence at the edge of described cover plate (22), the container cavity (21e) of a described lock part of correspondence (22a) is set on described main body (21).

6, according to claim 1, the 2 or 3 described hand knifes of being convenient to substitute blade, it is characterized in that offering chute (21d) on the described main body (21), described locking bar (24) is positioned at this chute (21d).

7,, it is characterized in that described locking bar (24) upper support has the spring (25) that described tapered end (24b) is applied elastic force to described lock part (22a) direction according to claim 1, the 2 or 3 described hand knifes of being convenient to substitute blade.

8, the hand knife of being convenient to substitute blade according to claim 1 is characterized in that the end of described tapered end (24b) is provided with a sliding surface (24c).

9, the hand knife of being convenient to substitute blade according to claim 1 is characterized in that the top of described knife rest (2) is provided with press section (21i).