CN111037612B

CN111037612B - Art designing knife

Info

Publication number: CN111037612B
Application number: CN201911289082.5A
Authority: CN
Inventors: 陈香; 郭庆文
Original assignee: Jiangnan University
Current assignee: Jiangnan University
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-11-03
Anticipated expiration: 2039-12-13
Also published as: CN111037612A

Abstract

The invention discloses an art knife, which comprises a knife handle, a sliding component and a blade; the knife handle comprises a holding part with an accommodating space inside and an opening at one end, a transverse through sliding path is arranged on the holding part, an outward notch is formed at the opening end of the sliding path corresponding to the holding part, and positioning grooves are arranged on one side of the sliding path; the sliding assembly comprises a sliding sheet which is arranged in the accommodating space and can slide along the longitudinal direction, and a positioning piece of which one end is rotatably connected to the sliding sheet and the other end can be matched with the positioning groove through rotation; one end of the blade is detachably fixed on the sliding sheet, and the other end of the blade can extend out of the opening end of the holding part. The invention can solve the problem of labor waste and inconvenience when the blade is pushed out or retracted, can ensure the stable work of the blade, ensures the blade not to move, can also ensure the smoothness of manual push-pull, and has no labor waste in operation.

Description

Art designing knife

Technical Field

The invention relates to the technical field of cutters, in particular to an art knife.

Background

The art designing knife is also commonly called as a graver or a wallpaper knife, is a knife for art and handicraft, is mainly used for cutting objects with soft texture, mainly consists of a plastic knife handle and a knife blade, and has various sizes and models. Also have a small number for the metal handle of a knife, the blade is mostly the bevel connection, can follow the marking off rupture of blade with the blunt, appears new blade point, facilitates the use. Present art designer's sword is mostly pull formula structure, need roll back the blade when using up and accomodate, but present art designer's sword is when using blade cutting article, has the easy activity of blade, the not high problem of stability, and the blade releases or needs the thumb to carry out the push-and-pull of great dynamics when rolling back, and the operation is comparatively hard.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

The invention provides a knife which is provided in view of the problems existing in the prior art.

Therefore, an object of the present invention is to provide an art knife, which can solve the problem of labor and inconvenience when a blade is pushed out or retracted.

In order to solve the technical problems, the invention provides the following technical scheme: an art knife, comprising: the knife handle comprises a holding part with an accommodating space inside and an opening at one end, a transverse through sliding path is arranged on the holding part, an outward notch is formed at the opening end of the sliding path corresponding to the holding part, and a positioning groove is arranged at one side of the sliding path; the sliding assembly comprises a sliding sheet which is arranged in the accommodating space and can slide along the longitudinal direction, and a positioning piece of which one end is rotationally connected to the sliding sheet and the other end can be matched with the positioning groove through rotation; and a blade, one end of which is detachably fixed on the sliding sheet, and the other end of which can extend out of the opening end of the holding part.

As a preferable aspect of the utility knife of the present invention, wherein: a strip-shaped magnetic piece is fixed on one side of the accommodating space corresponding to the positioning groove; the setting element include with slider swivelling joint's first connector, can wind in the accommodation space the centre of rotation of first connector carries out the second connector that rotates to and detachable be fixed in on the second connector and can with bar magnetism spare takes place magnetic attraction's locking block, the cross section cooperation of locking block the bottom profile of constant head tank.

As a preferable aspect of the utility knife of the present invention, wherein: one side of the positioning groove corresponding to the tail end direction of the holding part is a first surface, and the first surface is perpendicular to the longitudinal direction of the sliding path; one side of the positioning groove corresponding to the opening end direction of the gripping part is a second surface, and the second surface is an arc-shaped curved surface protruding outwards.

As a preferable aspect of the utility knife of the present invention, wherein: the sliding assembly further comprises an elastic sheet, one end of the elastic sheet is fixed on the sliding sheet, and the other end of the elastic sheet is provided with a hook; be provided with on the first connector and correspond to the draw-in groove of crotch, work as the second connector breaks away from through the rotation the constant head tank makes the locking piece is higher than during the top of first face, the crotch can be embedded and be fixed in the draw-in groove.

As a preferable aspect of the utility knife of the present invention, wherein: the sliding path comprises a positioning section corresponding to the positioning groove, a locking starting section positioned at one end of the positioning section and corresponding to the tail end of the gripping part, and a locking releasing section positioned at the other end of the positioning section and corresponding to the opening end of the gripping part; the width of the locking starting section is smaller than that of the positioning section, and a first extrusion slope surface is arranged on one side, far away from the positioning groove, of the locking starting section; the width of the locking removing section is smaller than that of the positioning section, a second extrusion slope surface is arranged on one side, close to the positioning groove, of the locking removing section, and the locking removing section is communicated with the notch through a sliding seam.

As a preferable aspect of the utility knife of the present invention, wherein: the sliding assembly further comprises a driving member; the driving piece comprises an upright post fixed on the sliding piece and extending out of the sliding path and a pushing block fixed on the outer end head of the upright post; the width of the upright post is not larger than that of the sliding seam, and the width of the sliding seam is smaller than the cross-sectional dimension of the locking block.

As a preferable aspect of the utility knife of the present invention, wherein: the gripping part comprises two parallel side walls, and the two side walls are provided with mutually opposite sliding paths; the sliding sheet and the driving piece fixed on the sliding sheet jointly form a sliding module, and the sliding module is provided with two types of structures which are arranged symmetrically with each other.

As a preferable aspect of the utility knife of the present invention, wherein: the thickness of the second connector is matched with the inner side distance between two side walls of the holding part; the transverse length of the locking block is larger than the inner side distance of two side walls of the holding part.

As a preferable aspect of the utility knife of the present invention, wherein: the both sides symmetry of slide is provided with the gib block, just the width of gib block corresponds to the inboard interval of grabbing portion both sides wall.

As a preferable aspect of the utility knife of the present invention, wherein: the knife handle also comprises an end cover which is covered on the open end of the holding part, the end cover is detachably connected with the open end of the holding part, and an outlet for allowing the blade to pass through is arranged on the end cover.

As a preferable aspect of the utility knife of the present invention, wherein: the blade is connected to the sliding piece through the telescopic fixing component; the telescopic fixing assembly comprises a knife clamping piece, four groups of connecting rods connected to the periphery of the knife clamping piece and damping blocks respectively fixed to the tail ends of the connecting rods; the guide strip is provided with a window corresponding to the damping block, and the damping block can extend out of the window under the extrusion of the corresponding connecting rod; a micro-motion groove corresponding to the cutter clamping piece is formed in the sliding piece, and the cutter clamping piece penetrates through the micro-motion groove; the blade is detachably connected with the knife clamping piece.

As a preferable aspect of the utility knife of the present invention, wherein: the cutter clamping piece comprises a sliding ring penetrating through the micro groove and an extrusion bolt capable of being in threaded connection with the inner side wall of the sliding ring; the sliding ring is provided with a limiting seat which is positioned on one side of the sliding sheet, and the bolt head of the extrusion bolt is positioned on the other side of the sliding sheet; the blade is provided with a connecting hole which is sleeved on the periphery of the sliding ring and clamped between the bolt head and the sliding sheet.

As a preferable aspect of the utility knife of the present invention, wherein: the sliding ring is provided with a first connecting seat, a second connecting seat, a third connecting seat and a fourth connecting seat which respectively correspond to each connecting rod, and each connecting rod is hinged with the sliding ring through the corresponding connecting seat; the first connecting seat and the second connecting seat are located on the same side of the pair of stretching pieces, and the third connecting seat and the fourth connecting seat are located on the other side of the pair of stretching pieces.

As a preferable aspect of the utility knife of the present invention, wherein: the telescopic fixing assembly further comprises a pair of stretching pieces which are symmetrically arranged, one end of each stretching piece is fixed on the sliding ring, and the other end of each stretching piece is fixed on the guide strips on two sides of the sliding piece.

The invention has the beneficial effects that: the invention can solve the problem of labor waste and inconvenience when the blade is pushed out or retracted, can ensure the stable work of the blade, ensures the blade not to move, can also ensure the smoothness of manual push-pull, and has no labor waste in operation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

fig. 1 is an overall structure view of the utility knife.

Fig. 2 is a structural view of the blade and the telescopic fixing component fixed on the sliding component and a partial detailed view thereof.

Fig. 3 is an exploded view of the utility knife and its detail view.

Fig. 4 is a structural view of the slide module.

Fig. 5 is a front view of the slide assembly and the telescoping securing assembly.

FIG. 6 is a front view of the grip.

Fig. 7 is a schematic view showing the sliding process of the locking block in the sliding path.

Fig. 8 is a schematic view of the blade in an inner and outer telescopic state.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Referring to fig. 1 to 8, an embodiment of the present invention provides an art knife, which includes a knife handle 100, a sliding assembly 200 capable of sliding in a longitudinal direction in the knife handle 100, and a blade 300 connected to the sliding assembly 200 and capable of extending and retracting in and out along with the sliding assembly.

The handle 100 includes a grip 101 as a handle body, and the grip 101 may be a strip extending longitudinally, and has an accommodating space M therein, and one end of the grip is open and the other end is closed. The open end of the grip 101 is defined as an open end, and the opposite end (the closed end) is defined as a trailing end. The grip part 101 is provided with a transverse through sliding path 101a, an outward notch 101b is formed on the sliding path 101a corresponding to the opening end of the grip part 101, and a plurality of positioning grooves 101c with the same specification are equidistantly arranged on one side of the sliding path 101 a.

The sliding assembly 200 includes a sliding piece 201 disposed in the accommodating space M and capable of sliding relatively along the longitudinal direction of the grip 101, and the sliding assembly 200 further includes a positioning member 202 having one end rotatably connected to the sliding piece 201 and the other end capable of forming a fit with the positioning groove 101c through rotation.

The blade 300 of the present invention may be a conventional utility knife blade, one end of which is detachably fixed to the slider 201 and the other end of which is capable of extending out of the open end of the grip 101. The primary positioning of the position of the blade 300 can be realized after the positioning member 202 is inserted into a certain positioning slot 101c according to actual requirements.

The present invention can set: the direction of the side of the slide path 101a close to the positioning groove 101c is the same as the direction of the knife edge, and the direction of the side of the slide path 101a far from the positioning groove 101c is the same as the direction of the knife back.

Further, a strip-shaped magnetic member (not shown in the drawings) extending in the longitudinal direction is fixed on the inner side wall of the accommodating space M corresponding to one side of the positioning groove 101 c. The bar-shaped magnetic member may be a bar-shaped magnet. In addition, the positioning member 202 includes a first connector 202a rotatably connected to the sliding piece 201, a second connector 202b capable of rotating forward and backward around a rotation center of the first connector 202a in the accommodating space M, and a locking block 202c detachably fixed to the second connector 202b and capable of magnetically attracting the bar-shaped magnetic member. The locking piece 202c is preferably a hollow iron cylinder whose cross section fits the bottom contour of the positioning slot 101 c. Therefore, under the magnetic attraction of the bar-shaped magnetic member, the locking piece 202c can be attracted and fitted into any one of the positioning grooves 101c, resulting in the preliminary positioning. Preferably, the bottom contour of the positioning slot 101c is a circular arc shape matching the locking block 202 c. The locking block 202c and the second connector 202b of the present invention can be detachable by using threads (the second connector 202b has a transverse screw hole, and the outer side wall of the locking block 202c has a corresponding external thread) or directly fixed by inserting (the second connector 202b has a transverse insertion hole, and the locking block 202c is directly inserted into the insertion hole, and is only kept stable by friction).

Further, a side of the positioning groove 101c corresponding to the trailing direction of the grip 101 is a first surface 101c-1, and the first surface 101c-1 is perpendicular to the longitudinal direction of the sliding path 101 a. One side of the positioning groove 101c corresponding to the opening end direction of the grip 101 is a second surface 101c-2, and the second surface 101c-2 is an arc-shaped curved surface protruding outwards. Preferably, the junction between the bottom of the positioning slot 101c and the second surface 101c-2 can be tangent smoothly, so as to ensure the smoothness of the sliding of the locking block 202c in the sliding path 101 a.

Further, the sliding assembly 200 further includes an elastic piece 203 having one end fixed to the sliding piece 201, and the other end of the elastic piece 203 has a hook 203 a. The elastic piece 203 has elastic deformation, and is preferably a steel piece having toughness. The first connector 202a is provided with a slot 202a-1 corresponding to the hook 203a, and when the second connector 202b is rotated to be separated from the positioning slot 101c and the locking block 202c is higher than the top of the first surface 101c-1, the hook 203a can be inserted into the slot 202 a-1.

The slide path 101a includes a positioning section 101a-1 corresponding to the positioning groove 101c, a lock start section 101a-2 at one end of the positioning section 101a-1 corresponding to the rear end of the grip 101, and a lock release section 101a-3 at the other end of the positioning section 101a-1 corresponding to the open end of the grip 101, which are in communication with each other. The width of the locking starting section 101a-2 is smaller than that of the positioning section 101a-1, and a first extrusion slope 101a-21 is arranged on one side (in the direction of the knife back) of the locking starting section 101a-2 away from the positioning groove 101 c; the width of the unlocking section 101a-3 is smaller than that of the positioning section 101a-1, a second extrusion slope 101a-31 is arranged on one side (the direction of a knife edge) of the unlocking section 101a-3 close to the positioning groove 101c, the unlocking section 101a-3 is also communicated with the notch 101b through a sliding slot 101a-4, and the width of the sliding slot 101a-4 is smaller than that of the unlocking section 101 a-3.

The invention sets the following steps: when the locking block 202c slides to the unlocking section 101a-3, the hook 203a of the elastic piece 203 can be inserted into the slot 202a-1, so that the locking block 202c is higher than each positioning slot 101c, and the sliding assembly 200 can slide in the sliding path 101a without obstruction.

In the use process of the utility knife of the present invention, the initial state is set to the storage state of the blade 300.

As shown in FIG. 7, in the initial state, the lock block 202c is located in the area of the lock start segment 101 a-2.

When the utility knife needs to be used, the blade 300 is pushed out, and the positioning piece 202 moves to the area of the positioning section 101 a-1; due to the magnetic attraction of the bar-shaped magnetic member, the locking piece 202c can be attracted to be inserted into the nearest positioning groove 101c, and thus the primary positioning is realized.

When the blade 300 continues to slide outwards, the locking block 202c can touch the second extrusion slope 101a-31, and due to the slope lifting, the locking block 202c can be lifted to a higher height until the hook 203a on the elastic sheet 203 is embedded into the slot 202 a-1; at this time, the locking block 202c can be raised above each positioning groove 101c and kept in a stable state, and even if the sliding assembly 200 moves reversely to the region of the positioning section 101a-1, the locking block 202c cannot be fitted into the positioning groove 101c reversely due to the locking of the hook 203a, and therefore, in this state, the sliding assembly 200 and the blade 300 can slide arbitrarily in the region of the positioning section 101a-1 and the unlocking section 101 a-3.

When the blade 300 is moved backward and reversely, the sliding assembly 200 and the blade 300 can slide across the middle positioning section 101a-1 without hindrance until the locking block 202c touches the first pressing slope 101 a-21; due to the extrusion of the slope, the sinking first extrusion slope 101a-21 can gradually extrude the locking block 202c, and the elastic piece 203 is caused to disengage from the clamping groove 202a-1 due to the elastic deformation of the elastic piece 203, and finally the locking block 202c is disengaged from the locking and slides into the area of the locking starting section 101a-2 to return to the initial state.

Further, the elastic sheet 203 of the present invention is preferably configured as follows:

the elastic piece 203 comprises a straight plate area 203b, limiting fixing plates 203c symmetrically arranged on two sides of the center of the straight plate area 203b, and a hook 203a and a replacement hook 203d respectively fixed at two ends of the straight plate area 203b, wherein the hook 203a and the replacement hook 203d form central symmetry about the center of the straight plate area 203 b. The limit fixing plate 203c divides the straight plate region 203b into two insertion parts. Meanwhile, the sliding sheet 201 is also provided with an inserting position 201c for fixing the elastic sheet 203, the inserting position 201c is provided with a slot 201c-1 which extends longitudinally and is through at two ends, and the width of the slot 201c-1 is matched with the thickness of the straight plate area 203 b. Therefore, the two insertion parts of the straight plate region 203b can be inserted into the slot 201c-1, so that the detachable fixation is realized. When the hook 203a is irreversibly deformed or damaged due to long-term use, the elastic piece 203 may be reversely fixed so that the replacement hook 203d faces outward. Preferably, the overall contour of the outer edge of the insertion position 201c is circular, and the outer diameter of the outer edge corresponds to the length of the insertion part, so that the matching limitation and the structural stability of the elastic piece 203 are facilitated.

Further, to facilitate controlling the longitudinal sliding movement of the sliding assembly 200 and the blade 300, the sliding assembly 200 further includes a driving member 204. The driving member 204 comprises a column 204a fixed on the sliding sheet 201 and extending out of the sliding path 101a, and a pushing block 204b fixed on the outer end of the column 204 a; it should be noted that: the width of the post 204a is not greater than the width of the sliding slot 101a-4, and the width of the sliding slot 101a-4 is smaller than the cross-sectional dimension of the locking block 202c, so that the locking block 202c cannot slide into the sliding slot 101a-4 while the post 204a can slide into the sliding slot 101a-4 when sliding to the unlocking section 101 a-3.

Further, the grip 101 includes two side walls parallel to each other, and the two side walls are provided with sliding paths 101a facing each other. The invention sets the following steps: the sliding piece 201 and the driving piece 204 fixed on the sliding piece form a sliding module together, the sliding module is provided with two types of structures which are symmetrically arranged, different sliding modules can be assembled according to the use habits of the left hand and the right hand of a user, and the pushing block 204b can be installed on any side of the holding part 101 according to the requirements and is flexible and changeable.

Further, the thickness of the second connector 202b is matched with the inner space between two side walls of the grip part 101; the locking piece 202c has a lateral length greater than the inside distance between the two side walls of the grip 101. It is thus ensured that the second connector 202b can rotate freely in the accommodating space M, while the locking block 202c can only move in the sliding path 101 a.

Further, the two sides of the sliding piece 201 are symmetrically provided with guide bars 201a, and the width of the guide bars 201a corresponds to the inner side distance between the two side walls of the holding part 101, so that the sliding piece 201 can slide longitudinally in the accommodating space M, and the stability of the sliding piece 201 during sliding can be improved.

Further, the handle 100 further includes a cap 102 covering the open end of the grip 101, the cap 102 is detachably connected (e.g., snap-fit) with the open end of the grip 101, and the cap 102 is provided with a blade outlet 102a for allowing the blade 300 to pass through. When the end cap 102 is connected with the open end of the grip 101 by a snap, two sides of the end cap 102 are provided with hooks 102b, the outer side wall of the open end is provided with corresponding protrusions 101d, and the hooks 102b and the protrusions 101d are mutually matched to form a snap.

Further, the utility knife of the present invention further comprises a telescopic fixing assembly 400, and the blade 300 is connected to the sliding plate 201 through the telescopic fixing assembly 400. The arrangement of the telescopic fixture assembly 400 enables the blade 300 to maintain a stable state during use without internal and external movement.

Specifically, the telescopic fixing assembly 400 includes a knife clamp 401 for fixing the blade 300, four sets of links 402 connected to the periphery of the knife clamp 401, and damping blocks 403 respectively fixed to the ends of the respective links 402. The guide bar 201a is provided with a window 201a-1 corresponding to the damping block 403, and the damping block 403 can extend out of the window 201a-1 to press the inner side wall of the grip 101 under the pressing of the corresponding connecting rod 402. Preferably, four sets of connecting rods 402 are symmetrically distributed, and four damping blocks 403 are distributed in the shape of four corner points of a rectangle.

In addition, the sliding sheet 201 is provided with a micro-motion groove 201b corresponding to the knife clamping piece 401, and the knife clamping piece 401 passes through the micro-motion groove 201 b; the blade 300 is removably attached to the holder blade 401. The micro-groove 201b is a longitudinal groove of short length in which the clamping knife 401 can slide longitudinally to some extent.

When the blade 300 is used to cut an article, the blade 300 itself tends to slide in and out in a telescopic manner.

When the blade 300 has a tendency to extend outward, the two links 402 corresponding to the outer sides can be pushed outward by the knife clamping element 401 to have a tendency to expand toward both sides, and the tendency can push the corresponding damping blocks 403 to partially protrude out of the respective windows 201a-1 and to press the inner side walls of the grip portion 101 together to form a friction resistance; and the greater the tendency of the blade 300 to slip, the greater the friction. Preferably, the outer surface of the damping block 403 is coated with a resistance increasing layer for increasing friction force, and the resistance increasing layer may be a rubber layer.

When the blade 300 has a tendency to retract inwards, the two links 402 corresponding to the inner sides can be pushed inwards by the knife clamping piece 401, so that the two links also have a tendency to expand towards two sides, and the tendency can push the corresponding damping blocks 403 to partially protrude out of the respective windows 201a-1 and to jointly press the inner side walls of the gripping parts 101 to form friction resistance; and the greater the tendency of the blade 300 to slip, the greater the friction.

It should be noted that: only when external force directly acts on the blade 300 and causes the blade to have the tendency of stretching inward and outward, the telescopic fixing assembly 400 can be actuated to work to form extrusion friction. If the inward and outward extension and contraction of the blade 300 is controlled only by pushing the above-mentioned pushing block 204b, the telescopic fixing assembly 400 is not caused to operate because there is no tendency to push and pull the knife clamping member 401. Therefore, the above-mentioned principle of action can ensure that: when the blade 300 is used for cutting an article, the telescopic fixing assembly 400 can ensure that the article can stably work and does not move; when the blade needs to be manually controlled to stretch, the smoothness of manual pushing and pulling can be ensured by the stroke matching between the locking block 202c and the sliding path 101a, and the operation is not laborious.

Further, the insert holder 401 includes a slide ring 401a passing through the micro-motion groove 201b and a pressing bolt 401b capable of being screw-coupled with an inner sidewall of the slide ring 401 a. The slip ring 401a may be an annular structure, and its inner side wall has an internal thread, and the extrusion bolt 401b is connected with the internal thread fit of its inner side wall, realizes the mode of detachable connection. The sliding ring 401a is provided with a limiting seat which is positioned on one side of the sliding sheet 201, and the bolt head 401b-1 of the pressing bolt 401b is positioned on the other side of the sliding sheet 201, so that the sliding sheet 201 is positioned between the limiting seat and the bolt head 401 b-1. The blade 300 is provided with a connecting hole 301, the connecting hole 301 is sleeved on the periphery of the sliding ring 401a and clamped between the bolt head 401b-1 and the sliding sheet 201, and clamping and limiting of the blade 300 are achieved. The limiting seat can be a convex block structure and can be placed on one side of the micro groove 201 b.

Preferably, the sliding ring 401a is provided with a first connecting seat 401a-1, a second connecting seat 401a-2, a third connecting seat 401a-3 and a fourth connecting seat 401a-4 corresponding to each connecting rod 402. One end of each link 402 is hinged to the sliding ring 401a through a corresponding connecting seat (four connecting seats, i.e., the first connecting seat 401a-1 to the fourth connecting seat 401 a-4), and the other end is hinged to a corresponding damping block 403. The first and second connector holders 401a-1 and 401a-2 are located at the same side of the pair of tension members 404, and the third and fourth connector holders 401a-3 and 401a-4 are located at the other side of the pair of tension members 404. It should be noted that: when the sliding ring 401a of the present invention is provided with the connecting seat, it has the function of "limiting seat", and can be directly used as the limiting seat.

Further, the telescopic fixing assembly 400 further includes a pair of symmetrically disposed stretching members 404, one end of each of the two stretching members 404 is fixed to the sliding ring 401a, and the other end is fixed to the guide strips 201a on two sides of the sliding piece 201. Preferably, the two stretching members 404 are collinear in a natural state, and the stretching members 404 are preferably stretching springs, which can ensure that the clamping knife 401 after micro-movement can be restored to the natural state under the action of the stretching members 404, thereby improving stability.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. An art knife, which is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the knife handle (100) comprises a holding part (101) which is internally provided with an accommodating space (M) and one end of which is opened, wherein a transverse through sliding path (101a) is arranged on the holding part (101), an outward notch (101b) is formed on the sliding path (101a) corresponding to the opening end of the holding part (101), and a positioning groove (101c) is arranged on one side of the sliding path (101 a);

the sliding assembly (200) comprises a sliding sheet (201) which is arranged in the accommodating space (M) and can slide along the longitudinal direction, and a positioning piece (202) of which one end is rotatably connected to the sliding sheet (201) and the other end can be matched with the positioning groove (101c) through rotation; and the number of the first and second groups,

a blade (300) with one end detachably fixed on the sliding sheet (201) and the other end capable of extending out of the opening end of the grip part (101);

a strip-shaped magnetic piece is fixed on one side, corresponding to the positioning groove (101c), in the accommodating space (M); the locating piece (202) include with first connector (202a) of slide (201) swivelling joint, can wind in accommodation space (M) second connector (202b) that the rotation center of first connector (202a) rotated to and detachably be fixed in on second connector (202b) and can with bar magnetism spare takes place magnetic attraction's locking piece (202c), the cross section cooperation of locking piece (202c) the bottom profile of constant head tank (101 c).

2. The utility knife of claim 1, wherein: one side of the positioning groove (101c) corresponding to the tail end direction of the gripping part (101) is a first surface (101c-1), and the first surface (101c-1) is perpendicular to the longitudinal direction of the sliding path (101 a);

one side of the positioning groove (101c) corresponding to the direction of the opening end of the holding part (101) is a second surface (101c-2), and the second surface (101c-2) is an arc-shaped curved surface protruding outwards.

3. The utility knife of claim 2, wherein: the sliding assembly (200) further comprises an elastic sheet (203) with one end fixed on the sliding sheet (201), and the other end of the elastic sheet (203) is provided with a hook (203 a);

a clamping groove (202a-1) corresponding to the hook (203a) is formed in the first connecting head (202a), and when the second connecting head (202b) is separated from the positioning groove (101c) through rotation and the locking block (202c) is enabled to be higher than the top of the first face (101c-1), the hook (203a) can be embedded and fixed in the clamping groove (202 a-1).

4. The utility knife according to any one of claims 1 to 3, characterized in that: the sliding path (101a) comprises a positioning section (101a-1) corresponding to the positioning groove (101c), a locking start section (101a-2) located at one end of the positioning section (101a-1) and corresponding to the tail end of the grip (101), and a locking release section (101a-3) located at the other end of the positioning section (101a-1) and corresponding to the open end of the grip (101);

the width of the locking starting section (101a-2) is smaller than that of the positioning section (101a-1), and a first extrusion slope surface (101a-21) is arranged on one side, far away from the positioning groove (101c), of the locking starting section (101 a-2);

the width of the unlocking section (101a-3) is smaller than that of the positioning section (101a-1), a second extrusion slope surface (101a-31) is arranged on one side, close to the positioning groove (101c), of the unlocking section (101a-3), and the unlocking section (101a-3) is further communicated with the notch (101b) through a sliding seam (101 a-4).

5. The utility knife of claim 4, wherein: the sliding assembly (200) further comprises a drive (204);

the driving piece (204) comprises a vertical column (204a) fixed on the sliding sheet (201) and extending out of the sliding path (101a), and a pushing block (204b) fixed on the outer end of the vertical column (204 a); the width of the upright post (204a) is not larger than that of the sliding seam (101a-4), and the width of the sliding seam (101a-4) is smaller than the cross-sectional dimension of the locking block (202 c).

6. The utility knife according to any one of claims 1 to 3 and 5, characterized in that: the gripping part (101) comprises two parallel side walls, and the two side walls are provided with mutually opposite sliding paths (101 a);

the slider (201) and the drive element (204) fixed thereto together form a sliding module which is provided with two types of structures arranged symmetrically to each other.

7. The utility knife of claim 6, wherein: the thickness of the second connecting head (202b) is matched with the inner side distance of two side walls of the holding part (101); the transverse length of the locking block (202c) is larger than the inner space between two side walls of the holding part (101).

8. The utility knife of claim 7, wherein: the two sides of the sliding sheet (201) are symmetrically provided with guide strips (201a), and the width of each guide strip (201a) corresponds to the inner side distance between the two side walls of the gripping part (101).

9. The utility knife of claim 8, wherein: the knife handle (100) further comprises an end cover (102) covering the open end of the gripping part (101), the end cover (102) is detachably connected with the open end of the gripping part (101), and an outlet (102a) allowing the blade (300) to pass through is arranged on the end cover (102).