Summary of the invention
Purpose of the present invention just provides a kind of manuscript pressing plate switch, described manuscript pressing plate switch is after being installed to manuscript press plate on the apparatus main body, in the process of keeping in repair, even manuscript press plate is opened to 90 ° with respect to apparatus main body, can prevent that also this manuscript press plate from freely falling down.
Another object of the present invention provides a kind of manuscript pressing plate switch that is easy to manuscript press plate is installed to the structure that apparatus main body gets on that has.
For achieving the above object, manuscript pressing plate switch of the present invention has following parts: be installed in the installing component on the apparatus main body; Support unit, it is the parts of supporting manuscript press plate, and is mounted to and can rotates with respect to above-mentioned installing component; Elastic device, elasticity are arranged between above-mentioned installing component and the above-mentioned support unit; It is characterized in that, be provided with rotation arrester between above-mentioned installing component and above-mentioned support unit, under the situation of the open angle when above-mentioned manuscript press plate is in maintenance, above-mentioned rotation arrester stops above-mentioned support unit to rotate to closing direction.
In addition, manuscript pressing plate switch of the present invention has following various parts: be installed in the installing component on the apparatus main body; Support unit, it is the parts of supporting manuscript press plate, and is mounted to and can rotates with respect to above-mentioned installing component; Elastic device, elasticity are arranged between above-mentioned installing component and the above-mentioned support unit; It is characterized in that, be provided with rotation arrester between above-mentioned installing component and above-mentioned support unit, under closing state, above-mentioned rotation arrester stops above-mentioned support unit to rotate to opening direction at above-mentioned manuscript press plate.
In addition, manuscript pressing plate switch of the present invention is under above-mentioned any situation, all the loading and unloading of above-mentioned rotation arrester are arranged on the above-mentioned manuscript pressing plate switch freely, and above-mentioned rotation arrester is that above-mentioned support unit is fixed on fixator pins on the above-mentioned installing component.
When having the such structure of first aspect present invention, under the state of the open angle when manuscript press plate being opened to maintenance, by means of rotation arrester support unit is fixed on the installing component, therefore when maintenance, can prevents effectively that manuscript press plate from falling down.
When the structure that has as second aspect present invention, in manuscript press plate being installed to the process that apparatus main body gets on, installing component is overlapped with support unit and be fixed together by rotation arrester, therefore can install to apparatus main body to manuscript press plate with state group and get on, so can obtain to be easy to carry out the effect of installation exercise with respect to contact glass closure.
When the structure that has as third aspect present invention, owing to be not used for preventing the optional feature that support unit rotates, so can obtain to make the device effect of compactness that becomes.
Embodiment
Below, describe manuscript pressing plate switch of the present invention in detail with reference to accompanying drawing.
Fig. 1~Fig. 3 is an example of manuscript pressing plate switch of the present invention.Manuscript pressing plate switch 1 of the present invention, be the linkage on a kind of apparatus main body 2 that is installed in duplicating machine, printing machine, facsimile recorder, scanner etc., it makes and can open and close with the upper surface of the represented manuscript press plate 3 of imaginary line with respect to this apparatus main body 2.As Fig. 1~shown in Figure 3, manuscript pressing plate switch 1 of the present invention is made of following part: installing component 4 can be installed on the rear upper end of apparatus main body 2 by installing tache parts (portion's material is unloaded in fetching) 6 with loading and unloading; Support unit 7 is connected on this installing component 4 freely by 5 rotations of first joint pin, and supporting manuscript press plate 3; Elastic device 21, elasticity are arranged between above-mentioned support unit 7 and the installing component 4; Lifting piece 9 rotates by second joint pin 8 and to be installed in free end one side of above-mentioned support unit 7 freely, and is installed in the rearward end of manuscript press plate 3 and constitutes.When usual the use, support unit 7 can be from the 0 ° off-position of manuscript press plate 3 with the upper surface contact that contacts glass 10 of apparatus main body 2, the maximum that turns to 60 °~70 ° is used the release position, and when maintenance, support unit 7 can also further turn to the release position when keeping in repair from maximum use release position.The feature of manuscript pressing plate switch 1 of the present invention is, be provided with rotation arrester 11, on the release position C and off-position when manuscript press plate 3 is in maintenance, above-mentioned rotation arrester 11 makes support unit 7 be fixed on the installing component 3 and prevents its rotation.
As Fig. 1~shown in Figure 3, installing component 4 is made of following part: be installed in the base plate 41 on the apparatus main body 2; From base plate 41 both side ends respectively to two blocks of side plates 42 that extend with the direction (comprising the roughly direction of quadrature) of base plate 41 quadratures; From the end (rearward end) of base plate 41 to the direction (comprising the roughly direction of quadrature) of these base plate 41 quadratures back plate 43 that extend, in the form of a substantially rectangular.Base plate 41 is made the essentially rectangular shape, and is provided with installing tache parts 6 it is installed in the mounting hole 44 of the flat key hole shape of using on the apparatus main body 2, and in the accompanying drawings, base plate 41 is fixed on the apparatus main body 2 by installing tache parts 6.Between two blocks of side plates 42, set up cam pin 12, and, particularly as shown in Figure 4, on two blocks of side plates 42, also be provided with first fixed pin holes 13 parallel with cam pin 12.
Particularly as shown in Figure 2, support unit 7 two blocks of side plates 72 having upper plate 71 and hang down from the both ends of this upper plate 71 and.As mentioned above, these two blocks of side plates 72 can be installed on two blocks of side plates 42 of installing component 4 rotationally by means of first joint pin 5.On the free end of two blocks of side plates 72, by second joint pin 8 lifting piece 9 can be installed rotationally, and be provided with and be used to gathering sill 73 that work pin 18 described later is entered.In addition, two blocks of side plates 72 of this support unit 7 near first joint pin, 5 one sides, set up backstop pin 15, and be provided with second fixed pin holes 14 of ovalize a little.
Label 16 is fixator pins, and it is provided with the tapered portion 16a towards end one side, and the E shape ring of not representing among the figure has been installed on another end.In addition, this E shape ring also can be replaced by packing ring, flange part or head.This fixator pins 16 can be inserted from first fixed pin holes 13 or second fixed pin holes, 14 these two pin-and-holes.First fixed pin holes 13 or second fixed pin holes 14 perhaps combine these two first fixed pin holes 13 and second fixed pin holes 14, have just constituted rotation arrester 11 of the present invention.
Lifting piece 9 is made and is covered support unit 7, and is made of following part: upper plate 91; Two blocks of side plates 92, from two ends of above-mentioned upper plate 91 respectively to extending with the direction (also comprising the roughly direction of quadrature) of upper plate 91 quadratures; Installing plate 93 is further from these two side plate 92 bendings laterally.Lifting piece 9 by a side of 8 supportings of second joint pin, work pin 18 is installed, and, manuscript press plate 3 is installed on the installing plate 93.In addition, being installed in the set screw 23 on the upper plate 91, is to be used for finely tuning manuscript press plate 3 with respect to the height of contact glass 10, so that can allow manuscript press plate 3 be pressed on equably on the upper surface of contact glass 10.In addition,, the structure that this lifting piece 9 is not set is arranged also, in this case, just manuscript press plate 3 is installed on the support unit 7 at the structure of manuscript pressing plate switch 1.
Two side plate 72 bendings to the inside and form grip block 74, a pair of first slide block 19 and second slide block 20 are by grip block 74 clampings, thereby can be slidingly received in the inside of support unit 7.First slide block 19 and second slide block 20 are made the rectangular tubular spare that the end is arranged of section.A pair of first slide block 19 and second slide block 20 are contained in the support unit 7 respectively sliding freely, and opening portion separately is relative.Be provided with the elastic device 21 that constitutes by compression helical spring at this a pair of first slide block 19 and second slide block, 20 inside.This elastic device 21 can be one or two, for example, can be arranged to two and perhaps overlap side by side, and the direction of leaving mutually respectively to this a pair of first slide block 19 and second slide block 20 applies acting force.
Be positioned at the bottom surface of second slide block 20 of second joint pin, 8 one sides, promptly the outside surface of sealing surface 20a is made tabular surface.This sealing surface 20a is by means of the elastic force pushing work pin 18 of elastic device 21, and also applies acting force making on support unit 7 and the direction that lifting piece 9 overlaps.
As shown in Figure 2, in the substantial middle portion as the sealing surface outside surface that is positioned at first joint pin, 5 one sides the opposing party, first slide block 19, be provided with cam part 22.This cam part 22 has the par, and the rake that begins to tilt gradually from this par.
Side when the place ahead that is gripping manuscript press plate 3 with hand, with the state on the contact glass 10 of manuscript press plate 3 above being pressed on apparatus main body 2 (make-position (referring to figs. 1 through Fig. 3)) when mentioning, because support unit 7 be a fulcrum and with respect to installing component 4 rotations with first joint pin 5, so the cam part 22 of first slide block 19 and the position of cam pin 12 butts, just move to rake gradually from the par, thereby first slide block 19 is also along with slip, and the compression helical spring of elastic device 21 extends gradually.And, when manuscript press plate 3 arrival are used open position with respect to the maximum of the upper surface of apparatus main body 2, surpassing on the open angle of this position, first slide block 19 is connected on the backstop pin 15, so first slide block 19 has just left cam pin 12, elastic device 21 is just inoperative.
In addition, manuscript pressing plate switch 1 of the present invention can stably be pressed on original copy on the upper surface of apparatus main body 2, and irrelevant with the thickness of original copy.
Promptly, at the thickness of original copy is under the situation of the such thickness of book shown in Figure 4, when this books original copy 24 being placed on the contact glass 10, and with manuscript press plate 3 when pressing down, just by means of work pin 18 pushings second slide block 20 that is installed on two blocks of side plates 92 that rotate with lifting piece 9, second slide block 20 just overcomes the elastic force of elastic device 21 to first slide block, 19 1 side shiftings, meanwhile, manuscript press plate 3 with lifting piece 9 with second joint pin 8 serve as that axle rotates, thereby can flatly cover on the upper surface of books original copy 24.Thus, manuscript pressing plate switch 1 of the present invention can stably be pressed on original copy on the upper surface of apparatus main body 2, and irrelevant with the thickness of original copy.
Below, the example of the rotation arrester 11 that uses manuscript pressing plate switch 1 of the present invention is described.Make manuscript press plate 3 be in closed condition with respect to contact glass 10 closures of apparatus main body 2, and the elastic force that makes installing component 4 and support unit 7 overcome elastic device 21 rotates, first fixed pin holes 13 on being arranged on installing component 4 is when second fixed pin holes 14 on being arranged on support unit 7 overlaps, fixator pins 16 is begun with the position that imaginary line is represented from Fig. 2, insert to each first fixed pin holes 13 and second fixed pin holes 14, then as among Fig. 1~Fig. 3 with shown in the solid line like that, by this fixator pins 16, the state that installing component 4 and support unit 7 are fixed on mutual coincidence and are restricted to the rotation of opening direction.
In this state, manuscript press plate 3 is moved on apparatus main body 2, the head 61 of installing tache parts 6 is pressed close to be arranged on the mounting hole 44 on the base plate 41 of installing component 4, and insert wherein, then when pulling or when pushing whole manuscript press plate 3, installing tache parts 6 engage with the base plate 41 of installing component 4, installing component 4 just temporarily is fixed on the apparatus main body 2, then, fixator pins 16 is disassembled, open manuscript press plate 3, tighten installing tache parts 6 again, perhaps as required, use other mounting screw or other stationary installation, installing component 4 is securely fixed on the apparatus main body 2, has just finished that thus manuscript pressing plate switch 1 is assembled in assembling operation on the apparatus main body 2.
Secondly, when particularly after contact glass 10 is disassembled, apparatus main body 2 being keeped in repair, will be as shown in Figure 5, employed angle (being 90 ° in the present embodiment) afterwards when earlier manuscript press plate 3 being opened to maintenance, again fixator pins 16 is inserted in first fixed pin holes 13 that is arranged on the installing component 4, then the end face of two of support unit 7 blocks of side plates 72 is connected on this fixator pins 16, two blocks of side plates 72 are stoped to the rotation of closing direction, thereby can prevent freely falling down of manuscript press plate.After having finished maintenance, fixator pins 16 is pulled out from first pin-and-hole 13, support unit 7 is rotated, just can close the operation of manuscript press plate 3.In addition, as the special expression of Fig. 5 institute, the inboard of the upper plate 71 by support unit 7 is connected on the back plate 43 of installing component 4 or is connected on the rearward end of two blocks of side plates 42, and the operation that manuscript press plate 3 is opened to greater than 90 ° is restricted.
Like this, according to the present invention, when being assembled in manuscript press plate 3 on the apparatus main body 2, owing to be under the state of support unit 7 and installing component 4 coincidences, both to be fixed together, make manuscript press plate 3 remain on the top closing state of contact glass 10, so can finish assembling operation at an easy rate, and when maintenance unit main body 2, the state of the open angle when manuscript press plate 3 being in be opened to maintenance, and stop the support unit 7 of manuscript pressing plate switch 1 to rotate, thereby when maintenance, can stop freely falling down of manuscript press plate 3 to closing direction.
Manuscript pressing plate switch of the present invention is a kind of manuscript pressing plate switch that manuscript press plate is such, weight is heavier that is particularly suitable for setting up original copy automatic feed device.