CN102777485A - Hinge mechanism - Google Patents

Abstract

The invention provides a hinge mechanism which adjusts an installing position after a reading device is arranged, is good in operation, and can restrain the number of parts. The hinge mechanism of the invention comprises an opening/closing body (b) fixed at the side of an original manuscript conveying body (Y) possessing a reading object pressing function, and a supporting body connected with the opening/closing body freely and arranged at the side of the reading device. The above supporting body comprises a fixing part(d) fixed at the side of the reading device and a sliding part (a) capable of being arranged on the fixing part. By making the sliding part move relatively relative to the fixing part, the relative position of the reading device (X) and the original manuscript conveying body (Y) can be adjusted; and by arranging a small gear at one side of the fixing part or the sliding part, and arranging a gear rack at the other side, protruding an operating part (20a) used for rotating the small gear out of the side exterior of the supporting body and using the operating part to operate the small gear, the sliding part moves forward and backward.

Description

Linkage

Technical field

The present invention relates to adjust the linkage of the reading device and the position of the support that is installed on this reading device.

Background technique

For the Gai Eryan of the reading device that can be installed on duplicating machine etc. through linkage with opening and closing, known have inserted the lid of carrying the conveying equipment of original copy.In this reading device, utilize the conveying equipment that is built in the lid, read the original copy that is transported between above-mentioned lid and the reading device.

In this device; Shown in figure 15; The lid Y that utilizes the H1 of pair of hinges mechanism, H2 will have the original copy conveying equipment is installed on the reading device X, and still according to the mounting point of this linkage H1, H2, the relation of the throughput direction of original copy and the read direction of original copy can produce and depart from.

For example, in scanning direction for CCD etc., promptly, for the read direction A of original copy, the throughput direction B of original copy not simultaneously, original copy can be transferred with respect to read direction obliquely.If original copy so is transferred with respect to read direction obliquely, the then copy image inclination that can become.

Therefore, must correctly manage the position of covering Y with respect to reading device X.

But the position of managing the assembly department of linkage H1, H2 is difficult tightly.Therefore, even making on-the-spotly, being installed on for the time being behind the reading device X must adjustment linkage H1, the position of H2.And, after the user side is provided with, can exist the position deviation or the original copy conveying equipment that cover because of certain reason crooked, need cover the situation of the position adjustment of Y.

As linkage with this position regulating function, the former known linkage that record in the patent documentation 1,2 is arranged.

The structure of former linkage that is documented in these patent documentations 1,2 is following; The slide member that the support that is installed in the reading device side possesses the fixed component that is fixed in reading device and can slide with respect to this fixed component, above-mentioned slide member is attached at the slide member side.

And, to move to glide direction α a little through linkage H2 a side, the inclination that Y is covered in adjustment makes the original copy throughput direction consistent with read direction.

With regard to the linkage of patent documentation 1; The back of slide member is positioned at than the back of said fixing parts leans on rear side; Make adjustment bolt member breakthrough form be formed in the through hole of the back of slide member, form tapped hole, combine with above-mentioned adjustment bolt thread in the back of fixed component.Through above-mentioned adjustment bolt is rotated with respect to fixed component, slide member moves with respect to fixed component.

But, in the position adjusting mechanism of this patent documentation 1, must adjust the operation of bolt from the back of reading device.In order to adjust the position, the operator need forward the back side or the mobile reading device of reading device to, and operability is poor.

The operating position that in addition, also can make above-mentioned adjustment bolt is in the place ahead.But, in this case, become opening under the state of lid and carry out operation below head stretched into it, exist because of covering the possibility of falling down to strike the operator.Especially the lid Y that possesses the original copy conveying equipment is heavier, so it strikes first-class comparatively dangerous.

On the other hand, the linkage of patent documentation 2 constitutes as follows, is projected into the adjustment bolt in the side outside of the slide part of support through rotation, and slide member is moved with respect to fixed component.Particularly, possess: be erected at the adjustment bolt between the bi-side of slide member; Rotatably will adjust the nut that bolt remains on the side of slide member; Be linked to above-mentioned adjustment bolt, and with its rotation the adjustment bolt axially movable action body; Be located at the cooperation protuberance on the action body; And be formed at fixed component, embed the cooperating recesses of the wire that cooperates protuberance.Through this cooperating recesses being become and the axle direction of intersecting of adjustment bolt, will be mobile with the slide member of its quadrature by the axial running transform of the rotation of adjustment bolt, thereby adjust the position of the lid that is linked to slide member.The linkage of this patent documentation 2 can carry out the adjustment operation from the side of device.

Patent documentation

Patent documentation 1: No. 3930267 communique of japanese

Patent documentation 2: TOHKEMY 2006-201293 communique

Because the position adjusting mechanism of the hinge of patent documentation 2 can carry out from the operation of the side of reading device, therefore good than the position adjusting mechanism operability of patent documentation 1, do not worry the bump that covers yet.

But there are many, the baroque problems of number of components in the position adjusting mechanism of the hinge of this patent documentation 2.

Summary of the invention

The object of the present invention is to provide a kind of number of components few, simple in structure and be used to adjust the good linkage of operability of position.

Linkage of the present invention possesses: be fixed on the original copy with the function of pushing the reading object thing and carry the switching body on side; And open and close body with this and rotate freely and link; And be installed on the support of reading device side; This support comprises fixing part that is fixed on above-mentioned reading device side and the slide part that can be slidably mounted on this fixing part, through the slide part that relatively moves with respect to said fixing portion, can adjust the relative position that above-mentioned reading device and original copy are carried body; Above-mentioned linkage is characterised in that; On a certain side in said fixing portion and slide part small gear is set, tooth bar is set, will be used to make the operation unit of above-mentioned small gear rotation to be projected into the side foreign side of above-mentioned support the opposing party; Through operating this operation unit rotary pinion, thereby slide part is moved forward and backward.

Effect of the present invention is following.

According to this invention, to compare with former linkage, number of components is few, and structure also can be oversimplified, and owing to can carry out the adjustment of position from the side of support, therefore operation easily, operability is good.

In addition, do not worry as opening that original copy is carried body and the situation of operating from the front of reading device is such that original copy is carried body drop time and clashed into.

Description of drawings

Fig. 1 is the figure of expression mode of execution of the present invention, is the sectional view that the angle of supporting part and housing main body is remained the state of 60 degree.

Fig. 2 is the figure of expression mode of execution of the present invention, is the plan view that the angle of supporting part and housing main body is remained the state of 60 degree.

Fig. 3 is the figure of expression mode of execution of the present invention, is the sectional view that the angle of supporting part and housing main body is remained the state of 90 degree.

Fig. 4 is the figure of expression mode of execution of the present invention, is the plan view that the angle of supporting part and housing main body is remained the state of 90 degree.

Fig. 5 is the stereogram of the supporting part of mode of execution of the present invention.

Fig. 6 is the partial sectional view that has amplified the installment state that is located at the action body on the supporting part of mode of execution of the present invention.

Fig. 7 is the partial enlarged drawing of Fig. 5.

Fig. 8 is the plan view of the supporting part of mode of execution of the present invention.

Fig. 9 is the partial enlarged drawing of Fig. 8.

Figure 10 is the Z-Z line sectional view of Fig. 9.

Figure 11 is the stereogram of first slide block of mode of execution of the present invention.

Figure 12 is a stereogram of observing mode of execution of the present invention from the rear.

Figure 13 is the side view of state of opening housing main body and the lifting feature of mode of execution of the present invention.

Figure 14 is the sectional view of state of opening housing main body and the lifting feature of mode of execution of the present invention.

Figure 15 is the plan view of the relation of expression reading device and lid.

Among the figure:

X-reading device, Y-(the formation original copy is carried body) lid, a-(slide part of formation support) supporting part; B-(formation opens and closes body) housing main body, c-(formation opens and closes body) lifting feature, d-(fixing part of formation support) fixed component; L-tooth bar; P-small gear, 20-spindle unit, 20a-operation unit.

Embodiment

At Fig. 1 ~ mode of execution of the present invention shown in Figure 14 is the linkage that is used for duplicating machine, and this linkage comprises: the supporting part a that is fixed on the reading device X side (with reference to Fig. 1, Figure 13) of duplicating machine; Rotate supported freely housing main body b through first back shaft 1 with above-mentioned supporting part a; And through second back shaft and the supported freely lifting feature c of above-mentioned housing main body b rotation.

And as also finding out from Figure 13, above-mentioned supporting part a is arranged on the recess that is formed at reading device X.

Above-mentioned supporting part a is provided with pair of upstanding sheet a2, a2 in the both sides of the plat part a1 of the reading device X side that is installed on above-mentioned duplicating machine, and between these both sides erected piece a2, a2, rear side erected piece a3 (with reference to Fig. 5) is set.

And, forming axis hole a5, a5 at above-mentioned pair of upstanding sheet a2, a2, above-mentioned first back shaft 1 is supported on this axis hole a5, a5.

In addition,, form axis hole a6, a6, be arranged among Fig. 5 the abridged as a pair of spindle unit 3,3 of the first action body at this axis hole a6, a6, and these spindle units 3,3 make shaft centre line consistent with each other than above-mentioned axis hole a5, a5 downside a little on the front.

And, as also can finding out, forming lip portions, and as shown in Figure 4 at the cardinal extremity of spindle unit 3,3 from Fig. 6, the front end of these spindle units 3,3 is keeping at interval and opposed each other.

Between above-mentioned erected piece a2, a2, be provided with fixed component d; This fixed component d comprises the plat part d1 that overlaps on the above-mentioned plat part a1 and is located at the erected piece d2 of the erected piece a2 side of the side among above-mentioned erected piece a2, the a2, and utilizes bolt member 13 (with reference to Fig. 5, Fig. 8) to be fixed on reading device X side.And, though not shown, the plat part a1 of supporting part a form supply above-mentioned bolt member 13 that connect, at the slotted hole that arrow α direction has length, supporting part a can slide with respect to fixed component d.

That is to say, in this embodiment, constitute support of the present invention, and the plat part a1 of supporting part a is a slide part of the present invention that the plat part d1 of fixed component d is a fixing part of the present invention by supporting part a and fixed component d.

Have again, on the erected piece d2 of fixed component d, be formed with tooth bar L in the top.

In addition,, on the erected piece a2 of the side of supporting part a, form axis hole a7, rotatably keep penetrating into inboard spindle unit 20 from the outside of erected piece a2 like Fig. 5, Fig. 7 ~ shown in Figure 10.A side end that in this spindle unit 20, is positioned at the outside of above-mentioned erected piece a2 possesses the operation unit 20a that can insert instruments such as screw-driver, forms outer screw section 20b at opposite side.

Between this outer screw section 20b and above-mentioned erected piece a2, the small gear p that rotates integratedly with spindle unit 20 is set.And in Fig. 5 ~ Fig. 9, symbol 21 is nuts, and this is combined in above-mentioned outer screw section 20b, the axial position of retainer shaft parts 20 and small gear p.

And, above-mentioned small gear p is located at and is formed on the tooth bar L position engaged of said fixing parts d.

Therefore,, make above-mentioned spindle unit 20 rotations, then move along tooth bar L small gear p rotation the time if operation unit 20a is operated from side as the supporting part a of support of the present invention.Its result, with respect to fixed component d, supporting part a moves (with reference to Fig. 5) in arrow α direction.That is to say that in above-mentioned lid Y, change and this linkage link the position of side, can adjust and cover the whole angle of Y.

And; On first back shaft 1 that is supported between axis hole a5, the a5, rotate and be supported with housing main body b freely; This housing main body b both sides of plate b1 above that forms hang down sheet b2, b2, and above-mentioned first back shaft, 1 perforation these hang down sheet b2, b2, and is supported on above-mentioned axis hole a5, a5.

In addition; At the above-mentioned sheet b2 that hangs down, b2, promptly, set up second back shaft 2 with a side opposition side that supports by first back shaft 1; Shown in figure 12, make the two ends of this second back shaft 2 outstanding, and link lifting feature c freely in this protruding terminus rotation from the sheet b2 that hangs down, b2.That is to say; Lifting feature c is for covering the shape of above-mentioned housing main body b; Make the two lateral plate c2 that hang down from the both sides of upper plate c1 the outside of sheet b2 of hanging down, and make the front end of second back shaft 2 connect this two lateral plate c2, support this lifting feature c freely thereby rotate along housing main body b.

And housing main body b and lifting feature c are that rotate each other round about at the center with first, second back shaft 1,2.

As stated, at the lifting feature c that is supported in second back shaft 2, promptly, between its two lateral plate c2, c2, be provided with second the action body 4.This second action body 4 comprises the spindle unit 4a that is erected between above-mentioned two lateral plate c2, the c2 and rotates and be located at the roller 4b on this spindle unit 4a freely, and these is positioned at than above-mentioned second back shaft 2 more lean on the position of below.And; At housing main body b, promptly, be formed with the rear side of first back shaft, 1 opposition side and make a concession recess b3 (with reference to Figure 12); When this second action body 4 rotates with lifting feature c, utilize and make a concession recess b3, the second action body 4 can not produce with housing main body b interferes.

And symbol c3, c3 are provided in a side of the installation sheet of the downside of above-mentioned two lateral plate c2, c2, are to be used for fixing at the lid Y of duplicating machine (with reference to Figure 13).That is to say that above-mentioned two lateral plate c2, c2 partly are insert cover Y and installation sheet c3, c3 are fixed on the structure on this lid Y.

In addition, be inserted with original copy conveying equipment from original copy to the reading part of reading device X that carry at this lid Y.That is to say that in this embodiment, lid Y constitutes original copy of the present invention and carries body.And, will carry the lid Y of body to be installed in housing main body b as original copy through lifting feature c, make and cover Y and can open and close with respect to reading device X.That is to say, in this embodiment, constitute switching body of the present invention by above-mentioned housing main body b and lifting feature c.

On the other hand; Between guide surface as the inboard opposed faces of hang down sheet b2, the b2 of housing main body b; Be inserted with first, second slide block 5,6 sliding freely, put the helical spring 7 of spring force at these first, second slide blocks 5, when being inserted with between 6 to good use in compression.

And; Under the effect of the spring force of above-mentioned helical spring 7; Above-mentioned first slide block 5 contacts with first back shaft, 1 pressure; Second slide block 6 contacts with the roller 4b pressure that constitutes the second action body, and these first, second slide blocks 5,6 are inserted in first back shaft 1 and constitute between the roller 4b of the second action body.Because the roller 4b pressure contact that so makes the second action body at second slide block 6, therefore need not apply lubricating grease at the contacting part of these the second action bodies 4 and second slide block 6.

And, shown in figure 11, on above-mentioned first slide block 5, form by sandwiching of constituting of the protuberance that is formed at its front and prevent parts 8 to sandwich the both sides that prevent parts 8 at this, form to sandwich and prevent that parts 8 from becoming the camming surface 9,9 at right angle with this.

And; As above-mentioned first the action body spindle unit 3,3 housing main body b with respect to supporting part a rotating process in; With first back shaft 1 is that circular motion is carried out at the center; And in the scope rotating process of 0 degree ~ 60 degree the above-mentioned camming surface 9,9 of pushing, thereby push first slide block 5 when making helical spring 7 crooked, first slide block 5 is separated from first back shaft 1.

In addition; The angle of supporting part a and housing main body b be below the set angle scope, when being scope below 60 degree in this mode of execution for example; Constituting spindle unit 3,3 contacts with camming surface 9,9; In the above scope of 60 degree to 90 degree, constitute maintenance as first move body the state that leaves from camming surface 9,9 of spindle unit 3,3.

And when housing main body b remained on the position of 90 degree with respect to supporting part a, the rear end of the upper plate b1 of housing main body b contacted with the rear side erected piece a3 of supporting part a, made it can not rotate 90 degree above (with reference to Fig. 3).

In addition, resist helical spring 7 as described above through first slide block 5 and move, make helical spring 7 bendings thus, but the spring force of helical spring 7 of this moment act as the power of ejection lid Y, promptly, act as the torque of opening the direction of covering Y.Therefore, for example at duplicating machine, opening from lid Y closing state when covering Y, the spring force of helical spring 7 becomes auxiliary force with respect to opening the power of covering Y.

On the contrary, when closing the lid Y of open mode, the spring force of helical spring 7 act as the rapid damping force that falls that is used to prevent to cover Y.

On the other hand, will contact under the state of camming surface 9,9 as spindle unit 3,3 pressure of the first action body, above-mentioned sandwiching prevents that parts 8 from becoming the structure between opposed that is projected into spindle unit 3,3.And above-mentioned on the sense of rotation of housing main body b and supporting part a sandwiches contact range or this length more than scope that the length that prevents parts 8 keeps being approximately identical to first slide block 5 that in housing main body b and supporting part a rotating process, contacts with spindle unit 3,3.Thereby, under the situation that the relative position of the spindle unit 3,3 and first slide block 5 changes, sandwich and prevent that parts 8 are bound at spindle unit 3, between 3.

Prevent that parts 8 are projected into as the spindle unit 3 of the first action body, between 3 owing to be located at sandwiching of first slide block 5; Therefore; Even for example the printed copy of reading object thing will get between the spindle unit 3,3 and first slide block 5, prevent that parts 8 from becoming interference and can not get into thereby sandwich.This finger for the people also can be described as identical.

And, for the original copy that do not sandwich above-mentioned duplicating or people's finger, in this mode of execution, prevent that parts 8 are projected between opposed of above-mentioned spindle unit 3,3 as long as sandwich, irrelevant with the form of the first action body etc.

Rotating the lifting feature c that is supported on second back shaft 2 freely is when for example duplicating the regulation page of thicker book, to the structure of the direction rotation opposite with housing main body b.

That is to say; In order to duplicate thicker book, this book is placed on reading device X, and under this state during to the direction rotatable cover Y of closing cap Y; With till above-mentioned book contacts, housing main body b and lifting feature c become one and are the center rotation with first back shaft 1 up to lid Y.

And; If lid Y touches above-mentioned book, then housing main body b stops its rotation, stops at this position; Cover the Y rotation if under the state that this housing main body b stops, further making; Then having only lifting feature c specifically is that rotate at the center with second back shaft 2, and as illustrated in fig. 13, supporting part a becomes parallel with the interval that lifting feature c maintenance is equivalent to the thickness of book.

The crooked situation of the helical spring 7 when next, detailed description housing main body b and lifting feature c rotate round about.

Is center when rotating integratedly at housing main body b and lifting feature c with first back shaft 1, and as spindle unit 3,3 pushings first slide block 5 of the first action body, but second slide block 6 touches the second action body 4 and is in it and moves the state that is prevented from this moment.Therefore, if utilize spindle unit 3,3 pushings first slide block 5, then have only first slide block 5 to move, thereby make helical spring 7 bendings as the first action body.

In addition, when lifting feature c rotates, become first slide block 5 before this and move and make the crooked state of helical spring 7.

And; At state that the rotation of housing main body b stops, be under the crooked state of helical spring 7; If lifting feature c is that rotate at the center with second back shaft 2; Then the roller 4b as the second action body 4 is that circular motion is carried out at the center with second back shaft 2, and in this process, pushes second slide block 6, makes helical spring 7 further crooked.

Thereby after lifting feature c rotated, during than housing main body b and lifting feature c unitary rotation, the crooked quantitative change of helical spring 7 was big.

On the other hand, at above-mentioned slide block 5 spring is set and accepts portion 10, and accept the front end of the chimeric freely adjustment bolt 11 of portion's 10 rotations at this spring.The adjustment bolt 11 that so is provided with is projected into and sandwiches the foreign side that prevents parts 8 via being formed at first slide block 5 and sandwiching the tapped hole 12 that prevents parts 8.

If this adjustment bolt 11 is rotated with respect to tapped hole 12, then adjust bolt 11 and moving axially, and make above-mentioned spring accept portion 10 to move, thereby crooked helical spring 7 can be adjusted the load of helical spring 7 with respect to tapped hole 12.

And Fig. 1 representes with respect to the aperture of the housing main body b of supporting part a and lifting feature c, promptly carries the aperture of the lid Y of body to remain the state of 60 degree as original copy.In addition, the aperture of with respect to the aperture of the housing main body b of supporting part a and lifting feature c, promptly covering Y at Fig. 3 remains 90 degree.

When above-mentioned lid Y was in the position of 60 degree, first, second slide block 5,6 kept initial position, thereby helical spring 7 is kept the maximum elongation state, and its spring force becomes minimum.In addition, in the scope of above-mentioned 60 degree to 90 degree, the spindle unit 3,3 that constitutes as the first action body leaves from the camming surface 9,9 of slide block 5.Thereby, in this state, the i.e. scope of 60 degree to 90 degree, by the spring force of helical spring 7, to open the torque of cover Y and become zero, in the scope of 60 degree to 90 degree, cover the free slewing area that Y is in the spring force effect of helical spring 7.

And, when the operation of printed copy, use hardly helical spring 7 the spring force effect 60 the degree to 90 the degree scope.But, when repairing duplicating machine etc., need open significantly and cover Y, can be opened to 90 degree this moment with lid Y.

And; If from cover the state of Fig. 1 that Y remains the aperture of 60 degree, rotate to the direction of closing cap Y, then at this moment state relatively is expressed as as follows; As spindle unit 3,3 pushing first slide block 5 of the first action body, make these first slide block, 5 opposing helical springs 7 and move.Therefore and at this moment, because second slide block 6 can not further retreat by the roller 4b that is pressed in the second action body 4, if first slide block 5 as above moves, then helical spring 7 is crooked and put spring force to good use.

In addition, if first slide block 5 opposing helical springs 7 and moving, then first back shaft 1 with as first move body spindle unit 3,3 brachium that is used for putting to good use torque with respect to first slide block 5 shorten gradually.

Therefore; In the relativeness of the spring force of helical spring 7 and the brachium of putting above-mentioned torque to good use, though change to the torque of opening the direction of covering Y, the torque settings of this first mode of execution does; Aperture at lid Y is 60 minimums when spending; Along with closing cap Y, it is big that this torque becomes, and its torque becomes maximum when above-mentioned aperture is 10 ~ 15 degree left and right sides.

And above-mentioned torque is as being used to make the damping force effect that Y can not close because of deadweight sharp of covering.

And; If aperture is less than above-mentioned 10 ~ 15 degree, then the crooked quantitative change of helical spring 7 is big, and the brachium of putting torque as described above to good use shortens; Act on moment on the whole by the closing direction that weight determined of lid Y; Power to opening the direction of covering Y weakens sharp, and in lid Y complete closing state, be aperture when being zero, it is maximum that the amount of bow of helical spring 7 becomes; Be used for becoming minimum, open the torque of covering Y and become minimum to the back shaft 1 of first slide block, 5 effect torques and the above-mentioned brachium of spindle unit 3,3.

Under the state of the torque that so will open lid, keep and cover the Y closing state, and utilize the deadweight of covering Y to push original copy for minimum.

The linkage utilization of this mode of execution is formed at the tooth bar L and the small gear p that is installed in erected piece a2 of fixed component d, can be from the position of its side adjustment linkage.And if form above-mentioned tooth bar L with fixed component d, then indivedual needed parts have only small gear p, fixedly spindle unit 20 and the nut 21 of small gear p in order to adjust the position.

Therefore, compare, can reduce number of components, make operation property good in the time of simplified structure with the former linkage of record in the above-mentioned patent documentation 2.

And, in the above-described embodiment, form tooth bar L in the fixing part side, in the slide part side small gear is installed, but also can tooth bar L be set in the slide part side, in the fixing part side small gear is set.

In addition; In this embodiment; Possesses lifting feature in relative rotation with housing main body b; Carry the lid Y of body as original copy in that this lifting feature is fixing, constitute the switching body, but also can use the position adjusting mechanism that has used above-mentioned tooth bar L and above-mentioned small gear p at the linkage that does not possess lifting feature, only constitute the switching body by housing main body b by lifting feature c and housing main body b.

And, also can use above-mentioned tooth bar L and above-mentioned small gear p not possessing the linkage that utilizes above-mentioned helical spring 7 to prevent to cover the rapid mechanism that falls of Y.In a word, so long as can open and close with respect to reading device X the hinge of ground mounting cover Y, no matter be which type of mechanism, can adopt the support of this mode of execution.

In addition, with regard to the linkage of this mode of execution that can adjust the position, when use is used for a plurality of linkage of mounting cover Y, need all not use the linkage of above-mentioned mode of execution in its integral body.

Utilize possibility on the industry

Be suitable as most and have the original copy of outfit linkage conveying equipment, duplicating machine.

Claims (2)

1. a linkage possesses: be fixed on the original copy with the function of pushing the reading object thing and carry the switching body on side; And open and close body with this and rotate freely and link; And be installed on the support of reading device side; This support comprises the fixing part that is fixed on above-mentioned reading device side and can be slidably mounted on the slide part of this fixing part, relatively moves with respect to said fixing portion through making above-mentioned slide part, can adjust the relative position that above-mentioned reading device and original copy are carried body; Above-mentioned linkage is characterised in that

A certain side in said fixing portion and above-mentioned slide part is provided with small gear, the opposing party tooth bar is set.

2. linkage according to claim 1 is characterized in that,

To be used to make the operation unit of above-mentioned small gear rotation to be projected into the side foreign side of above-mentioned support, and rotate above-mentioned small gear through operating this operation unit, thereby above-mentioned slide part is moved forward and backward.

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