CN207403454U - A kind of pencil holding mechanism of penknife - Google Patents

Abstract

The utility model provides a kind of pencil holding mechanism of penknife, belongs to field of mechanical technique.It solves the problems, such as that the pencil holding mechanism pen clip stability of existing penknife is not high.The pencil holding mechanism of this penknife, penknife includes casing, the pencil holding mechanism includes may be contained within turntable, chuck and several pen clip blocks in casing, turntable can rotate and when rotating each pen clip block can be driven to clamp or unclamp pencil, chuck is fixed in casing, and there is annular projection on chuck, turntable is located on the inside of annular projection, circumferentially arranged with several positioning grooves on annular projection internal perisporium, turntable peripheral side is equipped with flexible positioning piece, and flexible positioning piece can rely on the elastic force of itself be embedded in positioning groove or deviate from from positioning groove when turntable rotates.It has many advantages, such as that pen clip stability is high and turntable being capable of normal rotation.

Description

A kind of pencil holding mechanism of penknife

Technical field

The utility model belongs to field of mechanical technique, is related to the pen clip machine of a kind of penknife more particularly to a kind of penknife Structure.

Background technology

Existing penknife is generally divided into hand penknife and electro-motion pencil sharpener, but either manually still electronic , it is substantially all and includes pencil holding mechanism and penknife structure, when sharpening a pencil, enter penknife after pencil is passed through pencil holding mechanism In structure, pencil is clamped using pencil holding mechanism, penknife structure is recycled to be cut in a manner of manually or automatically pencil, lead Pencil is unclamped by pencil holding mechanism again after the completion of pen cutting, finally again takes out pencil.

At present, the pencil holding mechanism structure used on penknife is more diversified, and the mode of pen clip is also more diversified, such as A kind of pencil holding mechanism [the application number for hand pulling type penknife that Chinese patent was once disclosed：201520881867.2], before it includes Lid, rear cover, chuck, three gripping blocks and the chuck drive mechanism for driving chuck rotation, chuck drive mechanism include knob And turntable, knob are arranged on protecgulum in a rotatable manner, between knob and chuck, knob is fixed with turntable to be connected turntable It connecing, turntable is fixedly connected with chuck, connecting pin there are three settings on protecgulum trailing flank, and the second pen-laying hole is equipped at chuck hub, The edge of chuck is set there are three equally distributed recess, and the guide groove there are three arc, three gripping blocks are set on chuck It between chuck and rear cover and is evenly distributed on around the second pen-laying hole, a jack is respectively arranged in each gripping block With a bayonet lock, the bayonet lock of three gripping blocks, which corresponds, to be located in three recesses, the jack and three guiding of three gripping blocks Slot corresponds connection, and three connecting pins are inserted into after being sequentially inserted into guide groove in jack.In pen clip, driven by turning knob Turntable and chuck mutually fixed with turntable rotate, and by the rotation of chuck three gripping blocks are driven mutually to gather pencil It clamps, and rotates backward to make three gripping blocks to separate by knob after the completion of cutting and unclamp pencil.

Although the pencil holding mechanism of above-mentioned hand pulling type penknife can realize the clamping and release of pencil, it there is also Some shortcomings：Drive three gripping blocks that pencil holder is next in chuck, chuck is still in the shape that can be freely rotated State, this means that three gripping blocks are in movable state.And during the cutting process, penknife structure always with pencil Peripheral side is in contact and while being cut around pencil rotation, so, pencil is to resistance caused by penknife structure Meeting reaction is on pencil and pencil is made to form the trend rotated.It will be by three after pencil generates rotation under the active force Gripping block outwards struts so that pencil cutting when be released, the stability of pen clip is caused to decline, pencil can therefore compared with Penknife structure is inclined and pencil is made not cut normally.In order to solve this problem, people make frequently with tension spring For solution, one end of tension spring is hooked on knob, and one end of tension spring is pulled on protecgulum, and spiral cover is made to possess three folders of drive always Tight block is clamped in the trend on pencil.

The content of the invention

The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of pen clip machine of penknife Structure, the technical problem to be solved is that the stability for how improving pen clip.

The purpose of this utility model can be realized by following technical proposal：

A kind of pencil holding mechanism of penknife, penknife include casing, which includes may be contained within turning in casing Disk, chuck and several pen clip blocks, the turntable can rotate and when rotating each pen clip block can be driven to clamp or unclamp pencil, It is characterized in that, the chuck is fixed in casing, and has annular projection on chuck, the turntable is located at annular projection Inside, circumferentially arranged with several positioning grooves on the annular projection internal perisporium, it is fixed that the turntable peripheral side is equipped with elasticity Position part, and when turntable rotates flexible positioning piece can rely on the elastic force insertion positioning groove of itself or from positioning groove it is de- Go out.

This pencil holding mechanism can be applied to hand penknife or electro-motion pencil sharpener, but either be used for which kind of penknife On, the process of pen clip is all identical.In practical application, turntable rotates for convenience, can be set at the top of casing The spiral cover that can be rotated, and spiral cover is attached with turntable by fastener, band turn can be facilitated by so rotating spiral cover Disk is rotated.In pen clip, pencil through spiral cover and is inserted into casing, pencil is also passed through when being inserted into casing Turntable is with chuck and positioned at the inside of each pen clip block.Then, by rotating spiral cover turntable is driven to rotate, and is rotated using turntable Each pen clip block is driven mutually to gather to clamp pencil.

When flexible positioning piece is not embedded into positioning groove, flexible positioning piece is withstood on the inner wall of annular projection, But since flexible positioning piece has elasticity, the inner wall of annular projection can squeeze flexible positioning piece during turntable rotates And flexible positioning piece is deformed, so that turntable can be smoothed out rotating.When turntable is turned to positioning groove face, The inner wall of annular projection just not again can flexible positioning piece cause to stop, then flexible positioning piece will be multiple under its own resilient effect Position, which deforms, to be simultaneously embedded into positioning groove, so that turntable is positioned, and while cutting is deficiency to the active force that pencil generates So that flexible positioning piece was deviate from out of positioning groove.When turntable is needed to rotate again, user is used with heavy-handed new rotation spiral cover The active force that family is applied on spiral cover enough deviates from flexible positioning piece out of positioning groove so that flexible positioning piece is fixed It deforms upon under the extruding of position groove inner wall and deviates from out of positioning groove so that turntable is in shape free to rotate again State.

It therefore, only need to be each fixed to set according to the rotational angle of the next turntable relative initial position of the pencil holder of different thicknesses The position of position groove, it is possible to it is recessed to ensure that flexible positioning piece is embedded into corresponding positioning while each pen clip block clamps pencil Turntable is positioned in slot, after turntable is positioned, the position of each pen clip block is also just fixed, then the work being subject to during pencil cutting It firmly can not just be reacted to again by each pen clip block on turntable, therefore improve the stability of pen clip well, to prevent rotation stop There is unintentional rotation and unclamps pencil in disk.

In the pencil holding mechanism of above-mentioned penknife, the positioning groove is arc groove, and positioning groove turns along turntable It is in arc transition between dynamic direction and the inner wall of annular projection.

It can so deviate from order to convex head from positioning groove, be determined turntable in positioning plush copper insertion positioning groove Position can be convenient for positioning plush copper deviate from from positioning groove so that turntable releases positions come while improving pen clip stability.

In the pencil holding mechanism of above-mentioned penknife, the turntable is vinyl disc, and the flexible positioning piece is with turning Disk is in the positioning plush copper of integral structure, and the shape of the positioning plush copper is identical with positioning groove.

Turntable is vinyl disc, and flexible positioning piece is the positioning plush copper in integral structure with turntable, since plastics are that have Certain elasticity, therefore plush copper is positioned also with certain elasticity.When turntable needs to rotate, the inner wall of annular projection, which squeezes, to be determined The outermost of position plush copper makes positioning plush copper be deformed to reduce rubbing between turntable and annular projection to the center position of turntable Wipe power.Then when turntable turns to positioning plush copper with positioning groove face, positioning plush copper is embedded under the elastic force effect of itself Turntable is positioned in positioning groove.Since positioning groove is arc groove, it is identical with positioning groove to position the shape of plush copper, therefore Positioning plush copper does not have extra gap after being embedded into positioning groove to be existed, and eliminates the shifting amount after turntable is positioned, into One step improves the stability of pen clip.And the shape of arc groove matches somebody with somebody the rotation direction and ring-type for closing positioning groove along turntable again It is in the structure of arc transition between the inner wall of protrusion, while easily facilitating turntable and be located to improve pen clip stability, and energy It is enough to deviate from from positioning groove convenient for positioning plush copper so that turntable releases positioning.

In the pencil holding mechanism of above-mentioned penknife, the turntable outer provides in strip and is the deformation of arc Slot, has the 4th pen-laying hole on the turntable, and the deformation slot is located between positioning plush copper and the 4th pen-laying hole.

If turntable is completely solid, then positioning plush copper is not allowed to be also easy to produce change when being squeezed be subject to annular projection inner wall Shape, and the rotation of turntable may be influenced.Therefore deformation slot is opened up in turntable outer, since deformation slot is the arc in strip Shape when the inner wall of annular projection squeezes positioning plush copper, can make convex head and certain deformation is formed by deforming slot, with Reduce annular projection inner wall suffered in turntable rotation process and act on the resistance positioned in plush copper, real using plush copper is positioned The normal rotation of turntable is not interfered with while existing turntable positioning again.

In the pencil holding mechanism of above-mentioned penknife, as another technical solution, the peripheral side of the turntable is equipped with Location hole, the flexible positioning piece are the spring and steel ball being arranged in location hole, and each positioning groove is spherical in shape, works as positioning The part of the steel ball of hole and positioning groove described in when opposite is under the elastic force effect of spring in embedded positioning groove.

In turntable rotation process, steel ball is withstood under the elastic force effect of spring on the inner wall of annular projection, but due to steel ball It is spherical in shape, steel ball is that line contacts with the inner wall of annular projection, although so steel ball is withstood on the inner wall of annular projection simultaneously The rotation of turntable is not influenced.

When turntable turns to, each pen clip block is next by pencil holder, and location hole is determined with current position on annular projection inner wall Position groove is opposite, then loses the stop of annular projection inner wall, steel ball will partly stretch under the effect of the elastic force of spring In positioning groove, so that turntable is positioned.It is because steel ball is spherical in shape again, and positioning groove is also spherical in shape, therefore again Steel ball can be deviate from out of positioning groove during the secondary rotation turntable with hand, so that turntable is again at shape free to rotate State.

In the pencil holding mechanism of above-mentioned penknife, on the chuck there is the 5th pen-laying hole, set on the chuck There is identical with pen clip number of blocks and one-to-one limiting slot, each limiting slot is circumferentially distributed in around the 5th pen-laying hole and each limit Position slot is connected with the 5th pen-laying hole, and pen clip block is located in corresponding limiting slot, has the 4th pen-laying hole on the turntable, There is the guide groove identical with pen clip number of blocks, each guide groove is arc-shaped and each guide groove is circumferentially distributed on the turntable Around the 4th pen-laying hole, misaligned, the described pen clip in the center of circle of arc where each guide groove and the center of circle of the 4th pen-laying hole There is pillar, the pillar is embedded in guide groove on block.

Guide groove is arc-shaped, and the center of circle of arc and the circle of the 4th pen-laying hole are misaligned where guide groove, that is also just suitable It is obliquely installed in guide groove, then when turntable rotates compared with chuck, the guide groove on turntable can be while follow The inner wall that turntable rotates one side guide groove together can squeeze pillar, so as to promote pen clip block along limiting slot stretch out clamp pencil or It is to inside contract to unclamp pencil.Cooperation in this way, realizing each pen clip block also being capable of phase in the case where chuck is fixed Mutually gather to clamp pencil, be also exactly as premise by this pen clip mode so that phase can be arranged between turntable and chuck To rotating, and finally turntable is realized by positioning the cooperation of plush copper and positioning groove during turntable is rotated relative to chuck Positioning, to improve the stability of pen clip.

In the pencil holding mechanism of above-mentioned penknife, the pen clip block is in square, has on the pen clip block and is in Arc-shaped clamping face.

In pen clip, each pen clip block is clamped pencil by respective clamping face, since clamping face is arc-shaped, then Each clamping face can just fit with the outer circumferential surface of pencil, so as to the way of contact in forming face and face.The contact side in face and face Formula enables between pen clip block and pencil there is no the stress point for pushing pen clip block outward open when pencil rotates, and further carries The high stability of pen clip.

Compared with prior art, chuck is fixed in penknife by the pencil holding mechanism of this penknife, and is passed through convex The cooperation of head and positioning groove realizes the positioning of turntable, makes each pen clip block that can be clamped in lead always under the action of no external force The outside of pen improves the stability of pen clip well；In addition, the deformation slot by setting strip on turntable, makes positioning Plush copper can be more prone to be deformed under the action of slot is deformed, to reduce annular projection suffered in turntable rotation process Inner wall acts on the resistance in positioning plush copper, and turntable is not being interfered with again just using while positioning plush copper realization turntable positioning Often rotate.

Description of the drawings

Fig. 1 is the structure diagram of penknife.

Fig. 2 is schematic diagram when spiral cover is opened in Fig. 1.

Fig. 3 is the sectional view of Fig. 1.

Fig. 4 is the structure diagram at penknife core.

Fig. 5 is the exploded view between the pencil holding mechanism turntable of this penknife and chuck.

Fig. 6 is state diagram when turntable rotation makes each pen clip block open completely.

Fig. 7 is state diagram when turntable rotation makes each pen clip block gather completely.

Fig. 8 is that turntable rotation makes each pen clip block portion divide state diagram when gathering.

In figure, 1, casing；2nd, penknife core；2a, the second pen-laying hole；2b, link slot；3rd, spiral cover；3a, the first pen-laying hole； 3b, connecting pin；4th, turntable；4a, the 4th pen-laying hole；4b, guide groove；4c, connection lug；4c1, jack；4d, positioning plush copper；4e、 Deform slot；5th, chuck；5a, annular projection；5a1, spacing breach；5a2, positioning groove；5b, the 5th pen-laying hole；5c, limiting slot； 5d, positioning tab；6th, pen clip block；6a, pillar；6b, clamping face；7th, sealing plate；7a, the 3rd pen-laying hole.

Specific embodiment

It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these embodiments.

Embodiment one

Shown in Fig. 1, Fig. 2 and Fig. 3, a kind of pencil holding mechanism of penknife, penknife includes casing 1 and is arranged at casing 1 Interior penknife core 2, the pencil holding mechanism include spiral cover 3, turntable 4, chuck 5 and several pen clip blocks 6, the upper end opening of casing 1, Spiral cover 3 is connected to the top of casing 1 and can be rotated compared with casing 1, and the first pen-laying hole 3a is equipped at 3 center of spiral cover, turns Disk 4 and chuck 5 may be contained in penknife core 2, and each pen clip block 6 is between turntable 4 and chuck 5.

As shown in Figures 2 and 3, at the upper surface center of penknife core 2 be equipped with the second pen-laying hole 2a, the second pen-laying hole 2a with First pen-laying hole 3a is oppositely arranged.There is the connecting pin 3b of several protrusions, each connecting pin 3b to be circumferentially distributed on for the bottom of spiral cover 3 Around one pen-laying hole 3a, the upper surface of penknife core 2 provides the quantity link slot 2b identical with connecting pin 3b, each link slot 2b is arc-shaped, and each link slot 2b is circumferentially distributed on around the second pen-laying hole 2a, and each connecting pin 3b passes through corresponding link slot 2b is simultaneously connected with turntable 4, and moving spiral cover 3 along link slot 2b by connecting pin 3b can be 2 turn compared with penknife core It is dynamic.

As shown in Figure 4 and Figure 5,5 peripheral side of chuck has several positioning tab 5d, and chuck 5 passes through positioning by fastener Lug 5d and be fixed in penknife core 2.The upper side of chuck 5 has an annular projection 5a, turntable 4 be located at annular projection 5a it is interior and It can be rotated compared with turntable 4.The peripheral side tool of annular projection 5a is there are two bayonet, and the top of turntable 4 is equipped with sealing plate 7, sealing plate 7 Upper tool is there are two being buckled, and sealing plate 7 is connected to by being buckled in the corresponding bayonet of insertion on chuck 5, and turntable 4 passes through 7 quilt of sealing plate It is located in annular projection 5a.The 3rd pen-laying hole 7a is equipped at 7 center of sealing plate, the 4th pen-laying hole 4a, card are equipped at 4 center of turntable At 5 center of disk be equipped with the 5th pen-laying hole 5b, the 3rd pen-laying hole 7a, the 4th pen-laying hole 4a and the 5th pen-laying hole 5b with second into Hole 2a is opposite.

As shown in figure 5, the upper side of chuck 5 has consistent with 6 quantity of pen clip block and one-to-one limiting slot 5c, it is each to limit Position slot 5c is circumferentially distributed on around the 5th pen-laying hole 5b, and each limiting slot 5c is connected with the 5th pen-laying hole 5b, each pen clip Block 6 is arranged in corresponding limiting slot 5c and pen clip block 6 can be slided along limiting slot 5c.The upper side of each pen clip block 6 has There is pillar 6a, there is the guide groove 4b identical with 6 quantity of pen clip block on turntable 4, each guide groove 4b is arc-shaped, each guide groove 4b It is circumferentially distributed on around the 4th pen-laying hole 4a, the center of circle of arc where each guide groove 4b does not weigh with the center of circle of the 5th pen-laying hole 5b It closes, in the upper end insertion guide groove 4b of pillar 6a, when spiral cover 3 drives turntable 4 to rotate, the inner wall of guide groove 4b can promote pillar 6a is moved forward and backward along limiting slot 5c, is gathered and is disperseed so as to fulfill each pen clip block 6.Each pen clip block 6 is each to press from both sides in square The clamping face 6b being arc-shaped is respectively provided on block 6, clamping face 6b is arranged to arc surface can just be with the outer circumferential surface of pencil It fits.

As shown in fig. 6, when the pillar 6a on each pen clip block 6 is located at one end of corresponding guide groove 4b, each pen clip block 6 is complete Gather entirely；It is on the contrary then as shown in fig. 7, when the pillar 6a on each pen clip block 6 is located at the other end of corresponding guide groove 4b, respectively Pen clip block 6 scatters completely.As shown in figure 8, and the pillar 6a on each pen clip block 6 is located at other positions of the guide groove 4b in addition to both ends When putting, each pen clip block 6 is in part and gathers state.

As shown in figure 5, the peripheral side of turntable 4 has the quantity connection lug 4c identical with the connecting pin 3b on spiral cover 3, ring There is the spacing breach 5a1 consistent with connection lug 4c quantity, each lug 4c that connects to be lacked through corresponding /V on shape protrusion 5a Mouth 5a1 is simultaneously extended outside annular projection 5a.Jack 4c1 is equipped on each connection lug 4c, the connecting pin 3b lower ends of 3 bottom of spiral cover are inserted Enter in the jack 4c1 on corresponding connection lug 4c, thus spiral cover 3 is formed with turntable 4 and connected, so that spiral cover 3 is when rotating Turntable 4 can be driven to rotate together.

As shown in figure 5, several positioning groove 5a2 are distributed in the inner circumferential side of annular projection 5a, the peripheral side of turntable 4, which is equipped with, works as Turntable 4 can be embedded in positioning groove 5a2 or the flexible positioning piece deviate from from positioning groove 5a2 when rotating.In the present embodiment, Turntable 4 is vinyl disc, and positioning the plush copper 4d, positioning groove 5a2 that flexible positioning piece is with turntable 4 is in integral structure are arc Slot, the shape of positioning plush copper 4d is identical with positioning groove 5a2, and rotation directions and annular projection of the positioning groove 5a2 along turntable 4 In arc transition between the inner wall of 5a, can so deviate from order to convex head 4d from positioning groove 5a2.4 outer of turntable is passed through Deformation slot 4e equipped with arc, deformation slot 4e are located in strip, deformation slot 4e between positioning plush copper 4d and the 4th pen-laying hole 4a. If turntable 4 is completely solid, then positioning plush copper 4d is not easy to be deformed when being squeezed be subject to annular projection 5a inner walls, And the rotation of turntable 4 may be influenced.Therefore the deformation slot 4e close to positioning plush copper 4d is opened up on turntable 4, due to deforming slot The presence of 4e when the inner wall of annular projection 5a squeezes positioning plush copper 4d, can make convex head 4d by deforming slot 4e and shape Into certain deformation, acted on reducing annular projection 5a inner walls suffered in 4 rotation process of turntable on positioning plush copper 4d Resistance is not interfering with the normal rotation of turntable 4 using positioning while plush copper realizes that turntable 4 positions again.

This pencil holding mechanism can be used for electric pencil sharpener or manual pencil sharpener, and before cutting pen, user wears pencil successively It crosses the first pen-laying hole 3a, the second pen-laying hole 2a, the 3rd pen-laying hole 7a, the 4th pen-laying hole 4a and the 5th pen-laying hole 5b and is inserted into In penknife core 2.Then, user rotates spiral cover 3 the turntable 4 in penknife core 2 to be driven to rotate.After turntable 4 rotates, respectively Guide groove 4b generates slip compared with corresponding pillar 6a, and the inner wall of guide groove 4b is made to generate extruding force to pillar 6a, thus The relatively corresponding pillar 6a of each guide groove 4b release forward corresponding pen clip block 6 during sliding.Each pen clip block 6 is released Afterwards so that each pen clip block 6 is mutually gathered, and since the limiting slot 5c residing for each pen clip block 6 is connected with the 5th pen-laying hole 5b, The clamping face 6b of so each pen clip block 6 will be attached on the peripheral side of pencil, so as to which pencil be clamped.

There is unintentional rotation and unclamps pencil in turntable 4 in order to prevent, therefore positioning plush copper is set in the outside of turntable 4 4d, and positioning groove 5a2 is set on the annular projection 5a inner walls of chuck 5, pass through while each pen clip block 6 clamps pencil Positioning plush copper 4d is embedded into corresponding positioning groove 5a2 to position turntable 4, after turntable 4 is positioned, guide groove on turntable 4 The position of 4b is just fixed, and the position of pillar 6a is also just fixed on such pen clip block 6 so that and pen clip block 6 can remain stationary as, So that pencil is clamped always.Since the degree of gathering of each pen clip block 6 is determined by the rotational angle of turntable 4, and Turntable 4, which will rotate how many angle, to be determined by the thickness of pencil, therefore can be set according to the rotational angle of turntable 4 The position of positioning groove 5a2, it is ensured that each pen clip block 6 positions plush copper 4d while pencil is clamped can just be embedded into correspondence Positioning groove 5a2 in.

Embodiment two

The present embodiment is essentially identical with the structure and principle of embodiment one, the difference is that：In the present embodiment, turntable 4 peripheral side is equipped with location hole, and flexible positioning piece is the spring and steel ball being arranged in location hole, and each positioning groove 5a2 is in Spherical shape, part steel ball is under the elastic force effect of spring in embedded positioning groove 5a2 when location hole is opposite with positioning groove 5a2.

In 4 rotation process of turntable, steel ball is withstood under the elastic force effect of spring on the inner wall of annular projection 5a, but due to steel Pearl is spherical in shape, and steel ball is that line contacts with the inner wall of annular projection 5a, although so steel ball withstands on the inner wall of annular projection 5a It goes up but has no effect on the rotation of turntable 4.

When turntable 4 turns to, each pen clip block 6 is next by pencil holder, and location hole is determined with current position on annular projection 5a Position groove 5a2 is opposite, then lose the stop of annular projection 5a inner walls, steel ball will under the effect of the elastic force of spring part It stretches into positioning groove 5a2, so that turntable 4 is positioned.It is because steel ball is spherical in shape again, and positioning groove 5a2 is also in Spherical shape, thus again with hand rotate spiral cover 3 when steel ball can be deviate from out of positioning groove 5a2 so that turntable 4 is again at State free to rotate.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (7)

1. a kind of pencil holding mechanism of penknife, penknife includes casing (1), which includes may be contained in casing (1) Turntable (4), chuck (5) and several pen clip blocks (6), the turntable (4) can rotate and rotate when can drive each pen clip Block (6) clamps or unclamps pencil, which is characterized in that the chuck (5) is fixed in casing (1), and is had on chuck (5) Annular projection (5a), the turntable (4) are located on the inside of annular projection (5a), on the annular projection (5a) internal perisporium circumferentially Equipped with several positioning grooves (5a2), the turntable (4) peripheral side is equipped with flexible positioning piece, and elastic when turntable (4) rotates The elastic force insertion positioning groove (5a2) or the abjection from positioning groove (5a2) that locating piece can rely on itself.

2. the pencil holding mechanism of penknife according to claim 1, which is characterized in that the positioning groove (5a2) is arc Shape slot, positioning groove (5a2) along turntable (4) rotation direction and annular projection (5a) inner wall between be in arc transition.

3. the pencil holding mechanism of penknife according to claim 2, which is characterized in that the turntable (4) be vinyl disc, institute The flexible positioning piece stated is the positioning plush copper (4d) in integral structure, the shape of the positioning plush copper (4d) with turntable (4) It is identical with positioning groove (5a2).

4. the pencil holding mechanism of penknife according to claim 3, which is characterized in that described turntable (4) outer has provided In strip and it is the deformation slot (4e) of arc, there is the 4th pen-laying hole (4a), the deformation slot on the turntable (4) (4e) is located between positioning plush copper (4d) and the 4th pen-laying hole (4a).

5. the pencil holding mechanism of penknife according to claim 1, which is characterized in that the peripheral side of the turntable (4) is set There is location hole, the flexible positioning piece is the spring and steel ball being arranged in location hole, and each positioning groove (5a2) is in ball Shape, the embedded positioning under the elastic force effect of spring of the part of the steel ball described in when location hole and opposite positioning groove (5a2) are recessed In slot (5a2).

6. the pencil holding mechanism of the penknife according to claim 1 or 2 or 3 or 4 or 5, which is characterized in that the chuck (5) there is the 5th pen-laying hole (5b), the chuck (5) is equipped with identical with pen clip block (6) quantity and one-to-one limit on Position slot (5c), each limiting slot (5c) be circumferentially distributed in around the 5th pen-laying hole (5b) and each limiting slot (5c) with the 5th into pen (5b) is connected in hole, and pen clip block (6) is located in corresponding limiting slot (5c), has the 4th pen-laying hole on the turntable (4) (4a), has the guide groove (4b) identical with pen clip block (6) quantity on the turntable (4), and each guide groove (4b) is in circular arc Shape and each guide groove (4b) is circumferentially distributed in around the 4th pen-laying hole (4a), the center of circle and the 4th of arc where each guide groove (4b) The center of circle of pen-laying hole (4a) is misaligned, has pillar (6a) on the pen clip block (6), and the pillar (6a) is embedded to be oriented to In slot (4b).

7. the pencil holding mechanism of penknife according to claim 6, which is characterized in that the pen clip block (6) is in square, There is the clamping face (6b) being arc-shaped on the pen clip block (6).