CN102880021B - Original pressing plate opening and closing device and office automation machine - Google Patents

Abstract

An opening and closing device for an original pressing plate comprises an assembling element, a supporting element for the original pressing plate, a cam slider, a pressing element and a compression spring. The assembling component has an assembling space and two standing side plates formed by two side portions of the assembling space, and the assembling space is assembled toward the device body. The supporting element has a back plate and two bent side plates formed by the back plate, and one side ends of the two side plates are rotatably assembled to the two side plates of the assembling element by a hinge pin. The cam slider is slidably received and assembled in the direction of the assembly element inside the support element. The compression element is connected with a cam part arranged at one side end of the cam slider and is arranged between two side plates of the assembly element. The compression spring is elastically disposed between the cam slider and the free end side of the support member. Wherein, the pressed element further comprises a sliding connection part contacted with the cam part surface.

Description

Original pressing plate opening and closing device and office automation machine

technical field

The present invention relates to an original pressing plate opening and closing device suitable for opening and closing office automation machines (office automation, office automation) such as copiers and printers, and an office automation machine using the original pressing plate opening and closing device.

Background technique

The known opening and closing device of the original pressing plate of the copier and the office automation machine using the opening and closing device of the original pressing plate are composed of an assembly element, a supporting element, a lifting element, an actuating element, a pressure element, and a cam slide It is composed of parts, a spring bearing element and an elastic means. Wherein, the assembling element has an assembling space and standing side panels formed by two sides of the assembling space, and assembles the assembling space toward the direction of the device body. The supporting element has at least one back plate and bent side plates formed by the back plate, and the two side plates are rotatably connected to the direction of the two side plates of the assembly element by a hinge pin. The lifting element has a back plate for assembling the original press plate and bent side plates formed by the back plate, and on the free ends of the two side plates of the supporting element, the two side plates are moved to the direction different from the supporting element by connecting pins. The direction of the pivot is rotatable. The actuating element is installed on the pivot installation part of the support element relative to the lifting element, and the pivot installation part is also used as the swing position with the connecting pin as the fulcrum when the lifting element rotates. The pivot of the pressure element is set between the two side plates of the assembly element, which is different from the position of the hinge pin. The cam slider abuts the cam portion to the pressure element, and is slidably accommodated and assembled in the supporting element. The spring bearing element abuts against the actuating element at the free end side of the supporting element, and is slidably accommodated and assembled. The elastic means is elastically arranged between the cam slider and the spring bearing element to enhance the rotation effect of the lifting element in the direction coincident with the supporting element, and at the same time strengthen the supporting effect of the supporting element in at least one opening direction of the original pressing plate. And have the document pressing plate opening and closing device and office automation machine of above-mentioned structure, as the record content of following patent document 1 is known.

【Patent Literature】

Patent Document 1 JP-A-2001-154287

In this known document press plate opening and closing device and office automation machine, the cam part of the cam slider made of synthetic resin and the pressure pin made of SUS metal cylindrical rod, or the same is made of synthetic resin. The spring bearing element and the actuating pin made of SUS metal cylindrical rod, viewed from the side, the circular surface of the pressure pin and the actuating pin will be in point contact with the plane of the cam slider and the spring bearing element, and will be in point contact with the plane viewed from the plane. In the state of line contact, each other is in a state of crimping under the influence of the compression spring. Therefore, when opening and closing the original pressing plate assembled with a particularly heavy automatic document feeder, when the original pressing plate is lifted up, since the elastic means uses a member with strong elastic force, the cam slider and the pressurized The pin, or the spring bearing element and the actuating pin will slide in point or line contact under high contact pressure with each other. Therefore, even if lubricating grease is applied to the parts in contact with each other, it is easy to cause wear or strange noise due to the exhaustion of the grease.

In addition, under high point contact pressure and high line contact pressure, the cam slider and spring bearing element made of synthetic resin are easy to let the pressure pin and The actuating pins are strongly pressed against each other, and there is a problem that they must withstand a pressure sufficient for deformation. However, in order to avoid this problem, it is necessary to increase the axial lengths of the pressure receiving pin and the actuating pin, which hinders the miniaturization of the device.

However, even if the above-mentioned problems can be solved by allowing the pressure pin and the actuating pin to rotate on their own, or rotatably assembling the roller tube on the periphery of the pressure pin and the actuating pin, due to the contact between the circular surface and the plane, it is still not effective. solve.

Similarly, the aforementioned problems between the frequently used cam slider and the pressure pin are also particularly noticeable during the normal opening and closing operation of the document presser plate, but in the document presser plate opening and closing device that does not have an elevating element , since there is no actuating pin relationship, there is no such problem between the actuating pin and the spring bearing element. Furthermore, even in the original pressing plate opening and closing device with the lifting element, since the spring bearing element and the actuating pin only slide when the original pressing plate is lifted and lowered, the frequency of use is not high, and the grease is exhausted. It also hardly occurs between the pressure member and the cam slider. However, when the spring bearing member is repeatedly subjected to the pressure exerted by the compression spring, especially when the original pressing plate is closed, the spring bearing member is subjected to strong deformation pressure, the pressure generated between the pressure receiving member and the cam slider will be derived. Same problem, same need to be solved as previous problem.

Furthermore, in the description of the present invention and the scope of patent application, the pressure pin and the actuation pin are regarded as the pressure element and the actuation element for explanation, this is because the pressure element and the actuation element, in addition to the pressure pin and the actuation pin, Also includes other broad concepts.

Contents of the invention

The purpose of the present invention is to solve the problems of the above-mentioned conventional technology, by increasing the contact area between the cam slider and the pressure element, or between the spring bearing element and the actuating element, to provide a solution to the above-mentioned conventional technology. point of the original press plate opening and closing device and office automation machines.

To achieve the above purpose, an opening and closing device for a document pressing plate of the present invention comprises an assembly element, a supporting element for an original pressing plate, a cam slider, a pressure receiving element and a compression spring. The assembling element has an assembling space and standing side panels formed by two sides of the assembling space, and assembles the assembling space toward the direction of the device body. The supporting element has a back plate and bent side plates formed by the back plate, and one end of the two side plates is rotatably assembled in the direction of the two side plates of the assembling element by a hinge pin. The cam slider is slidably accommodated and assembled in the direction of the assembly element inside the support element. The pressure element is connected with the cam portion installed on one side of the cam slider, and is arranged between the two side plates of the assembly element. A compression spring is elastically disposed between the cam slider and one side of the free end of the supporting element. Wherein, the pressure receiving element further includes a sliding contact portion in surface contact with the cam portion.

An opening and closing device for an original pressing plate of the present invention comprises an assembly element, a support element, a lift element, a pressure element, a cam slider and a compression spring. The assembling element has an assembling space and standing side panels formed by two sides of the assembling space, and assembles the assembling space toward the direction of the device body. The supporting element has at least one back plate and bent side plates formed by the back plate, and is rotatably connected to the two side plates of the assembly element by a hinge pin. The lifting element has at least one back plate, bent side plates formed by the back plate, and an original pressing plate. The orientation of the supporting element is pivotally mounted. The pivot of the pressure element is erected between the two side plates at the end of the assembly element. The cam slider abuts the cam portion to the pressure element, and is slidably accommodated and assembled inside the supporting element. The compression spring is elastically arranged between the cam slider and the lifting element to strengthen the rotation of the lifting element in the direction coincident with the support element, and strengthen the rotation of the support element in at least one direction toward the original pressing plate. Wherein, the pressure receiving element further includes a sliding contact portion in surface contact with the cam portion.

Furthermore, a document pressing plate opening and closing device of the present invention includes an assembly element, a supporting element, a lifting element, an actuating element, a pressure element, a cam slider, a spring bearing element and a compression spring. The assembling element has an assembling space and standing side panels formed by two sides of the assembling space, and assembles the assembling space toward the direction of the device body. The supporting element has at least one back plate and bent side plates formed by the back plate, and is rotatably connected to the two side plates of the assembly element by a hinge pin. The lifting element has a back plate, bent side plates formed by the back plate, and a top plate, and is assembled with an original pressing plate. The plate is rotatably pivoted in a direction different from the support member. The actuating element is installed at a position where the connecting pin is used as a fulcrum to pivot when the lifting element rotates, wherein the position is a pivot installation portion of the supporting element relative to the lifting element. The pivot of the pressure element is erected between the two side plates at the end of the assembly element. The cam slider abuts the cam portion to the pressure element, and is slidably accommodated and assembled inside the supporting element. The spring supporting element abuts against the operating element at the free end of the supporting element, and is slidably received and assembled. The compression spring is elastically arranged between the cam slider and the spring supporting element, so as to strengthen the rotation of the lifting element in the direction coincident with the support element, and strengthen the rotation of the support element in at least one direction toward the original pressing plate. Wherein, the pressure receiving element further includes a sliding contact portion in surface contact with the cam portion.

In the document pressing plate opening and closing device described above, the pressure receiving element rotates by coordinating the movement of the cam slider of the cam portion, so as to keep the surface contact between the cam portion and the sliding joint portion.

In addition, in the document pressing plate opening and closing device described above, an assembly foot is vertically installed in the assembly space of the assembly element, and the assembly foot is inserted into the assembly insertion hole provided on the device body so as to be movable up and down.

In addition, in the document pressing plate opening and closing device described above, the contact surfaces of the actuating element and the spring bearing element are formed by surface contact with each other.

In the document pressing plate opening and closing device described above, the actuating element is rotatable and includes an actuating pin and a lifting roller. The lifting roller is rotatably assembled on the actuating pin.

Furthermore, in the opening and closing device of the document pressing plate of the present invention, the pressure receiving element is rotatable and includes a pressure receiving pin and a sliding roller. The slide roller is rotatably assembled to the pressure pin.

In addition, in the document pressing plate opening and closing device described above, the pressure receiving element or the actuating element is provided with a cover covering the exposed end of the cam slider or the spring bearing element, and the cam slider is provided with a cover covering the pressure receiving element.

In addition, in the opening and closing device of the original pressing plate of the present invention, the cross-section of the pressure receiving element is approximately rectangular or is a stamped product, and is provided with a grease filling place for lubrication.

In addition, the office automation machine of the present invention uses the above-mentioned document presser plate opening and closing device between the device body and the document presser plate.

With the above structure, the present invention reduces the pressure per unit area between the pressure receiving element and the cam slider, between the actuating element and the spring bearing element, or between the actuating element and the spring bearing element, so that various Combination of the original press plate opening and closing device and the office automation machine using the original press plate opening and closing device, which can be between the cam slider and the pressure member and the spring bearing member and the actuating member during the original press plate opening and closing operation Between, or between the spring bearing element and the operating element, etc., where high contact pressure will occur, the effect of preventing wear or strange noise due to the loss of lubrication, or the deformation of the cam slider and the spring bearing element.

Furthermore, in the above-mentioned process, especially resin products such as cam sliders and spring bearing elements can be correspondingly reduced in material grade. In addition to reducing costs, it can also shorten the axial length of pressure-bearing elements and actuating elements to achieve Miniaturization effect of the original press plate opening and closing device.

Also, using the original pressing plate opening and closing device of the present invention between the actuating element and the spring bearing element can increase the frictional resistance and prevent the original pressing plate from being folded halfway during closing. At this time, setting concave-convex fitting means between the contact surface (sliding surface) of the operating element and the spring bearing element also has the effect of preventing halfway concave folding.

In addition, if a cover covering the exposed ends of the cam slider and the spring bearing element is installed on one side of the pressure receiving element and the operating element, the lubricating grease coated on the cam slider and the spring bearing element can be obtained. Effectively prevents originals from being stained.

Description of drawings

Fig. 1 is a general oblique view of the opening and closing device of the original pressing plate of the present invention;

Fig. 2 is a side view of the opening and closing device of the original pressing plate of the present invention;

Fig. 3 is a front view of the opening and closing device of the original pressing plate in Fig. 2;

Fig. 4 is an exploded oblique view of the opening and closing device of the original pressing plate in Fig. 2;

Fig. 5 is a side sectional view of the opening and closing device of the original pressing plate in Fig. 2;

6 to 7 are side sectional views illustrating the action of the document pressing plate opening and closing device of FIG. 2;

Fig. 8 is a side sectional view of another embodiment of the opening and closing device of the original pressing plate of the present invention;

Fig. 9 is a perspective view of the lifting roller used for the opening and closing device of the original pressing plate in Fig. 8;

Fig. 10 is a side sectional view illustrating the action of the document pressing plate opening and closing device of Fig. 8;

Fig. 11 is a side sectional view of another embodiment of the opening and closing device of the original pressing plate of the present invention;

Fig. 12 is a perspective view of the sliding roller used for the opening and closing device of the original pressing plate in Fig. 11;

13 to 14 are side sectional views illustrating the action of the document pressing plate opening and closing device of FIG. 11;

Fig. 15 is (a) oblique view and (b) side view of another embodiment of the sliding roller used in the original press plate opening and closing device in the present invention;

Fig. 16 is a perspective view of another embodiment of the sliding roller used in the opening and closing device of the original pressing plate in the present invention;

Fig. 17 is a side sectional view of another embodiment of the opening and closing device of the original pressing plate of the present invention; and

Fig. 18 is a side sectional view of another embodiment of the opening and closing device of the document pressing plate of the present invention.

[Description of main component symbols]

1, 27: Assembly components

1a, 27a: assembly space

1b, 2b, 6b, 25b, 27b: Side panels

1c: Rear plate

1d: Hinge pin assembly hole

1e: Assembly holes for pressure components

1f: Engagement pin engagement hole

2, 25: support element

2a, 6a, 25a: Backplane

2c, 25c: holding board

2d: guide ditch

2e: Hinge pin insertion hole

2f: connecting pin insertion hole

2g: engaging hole

2h: stop hole

3: hinge pin

3a: Bearing elements

3b, 4a: Spacers

3c, 4b, 9a: E-ring

3d, 4c, 9b: ring groove

3e: Bearing hole

4: Link pin

5, 20: Pressure components

5a, 20a: pressure pin

5b, 20b, 23, 24: Sliding rollers

5c, 15d, 20c, 23a, 24a: Sliding joints

5d, 15c, 20d, 23d, 24d: through holes

5e, 15e, 20e: curved part

6: Lifting element

6c: Assembly board

6d: connecting pin connecting hole

6e: Action pin connection hole

6f: Stopper pin insertion hole

7: height adjustment means

7a: Adjustment screw

7b: Nut

8: Stop element

8a: Assembly screws

9, 15: Actuating components

10, 21: Cam slider

10a, 21a: Cam part

10b, 11b, 16b, 26a: Openings

10c: Cover

11, 16, 26: Spring bearing elements

11a, 16a: abutting part

12: Elastic means

12a: Large diameter coil spring

12b: Small diameter coil spring

15a: Actuator pin

15b: Lifting roller

17: Thick original

20f: cover body

23b: bending part

23c: Ribs

23e: Grease filling place

24c: Assembly sheet

24d: reinforcement sheet

25d: top plate

25e: Platen

27c: Rear plate

28: Assembling the feet

A: Composite machine

a: device body

B, B', D, E, F, G: Opening and closing device of the original pressing plate

C: Original press board

c: Automatic document feeder

d: Original loading platform

e: Assembly insertion hole

Detailed ways

The drawing is a schematic diagram of one embodiment of the present invention. It is worth noting that, although the original press plate opening and closing device used in copiers or multifunctional machines is used for illustration below, the original pressing plate opening and closing device of the present invention can also be used in printers, printers, etc. other than copiers or multifunction machines Office automation machines such as fax machines and scanners.

Example 1

FIG. 1 is a schematic diagram of a composite machine of the present invention. In the illustration, a pair of document press plate opening and closing devices B, B' are passed through the top of the device body a of the compound machine A of the present invention, and a document press plate C with an automatic document feeder c can be opened and closed. Original press plate opening and closing devices B, B' The original pressing plate opening and closing device B on the left side of the figure is assembled with one side of the automatic document feeder c. Since the load is quite heavy during the opening and closing operation, Double compression springs are assembled, and the original pressing plate opening and closing device B' on the right is only assembled with one set of compression springs (not shown in the figure) because of its light load. However, the composition of the important components of the present invention differs only in the lateral width in principle, and the basic structure is the same. Therefore, in the following description, only the document pressing plate opening and closing device B on the left side will be described.

Fig. 2 to Fig. 7 are the schematic diagrams of specific embodiments of the original pressing plate opening and closing device B in Embodiment 1 of the present invention. The original opening and closing plate pressing device B of the present invention includes an assembly element 1, a supporting element 2, and a lifting element 6. A pressure receiving element 5 , a cam slider 10 , an actuating element 9 , a spring bearing element 11 and an elastic means 12 . Wherein, the assembly element 1 is assembled to the device body a. The supporting element 2 rotatably connects the two side plates 2b, 2b to the two side plates 1b, 1b of the assembly element 1 through the hinge pin 3 . The lifting member 6 is assembled with the original pressing plate C which is rotatably pivotally mounted in a direction different from that of the supporting member 2 via the connecting pin 4 in the direction of the side plates 2b, 2b of the supporting member 2 . The pressure receiving element 5 is arranged between the two side plates 1b, 1b of the assembly element 1 . The cam slider 10 abuts the cam portion 10 a on the pressure receiving element 5 , is lifted up by the holding plates 2 c , 2 c inside the supporting element 2 , and can be manually accommodated and assembled. The actuating element 9 is arranged between the two side plates 6b, 6b of the lifting element 6 . The spring bearing element 11 abuts against the operating element 9 and is slidably received and assembled inside the supporting element 2 . The elastic means 12 is arranged between the cam slider 10 and the spring bearing element 11 through elasticity, and strengthens the rotation of the lifting element 6 in the direction coincident with the supporting element, and at the same time strengthens the supporting element 2 in at least one opening direction toward the original pressing plate C rotation. In addition, the pressure receiving element 5 has a sliding contact portion 5c that is in surface contact with the cam portion 10a.

In more detail, the assembly element 1 is composed of an assembly space 1a assembled on the device body a, two side panels 1b, 1b and a rear panel 1c. Wherein, the two side plates 1b, 1b are formed by bending the two side ends of the assembly space 1a in a vertical direction (including a substantially vertical direction) relative to the assembly space 1a. The rear panel 1c is approximately rectangular, and is formed by bending one end (rear end) of the assembly space 1a to a vertical direction (including a slightly vertical direction) relative to the assembly space 1a, and one of the two sides is engaged with the assembly element 1 The two side panels 1b, 1b. In addition, the rear plate 1c can also be assembled with a stopper 8 by assembling screws 8a and 8a according to usage requirements. The stopper 8 determines the maximum opening angle (60 degrees) of the support member when the original pressing plate is opened and closed. Among other components, the marked marks 1d and 1d are hinge pin assembly holes, the marked marks 1e and 1e are pressure component assembly holes, and the marked marks 1f and 1f are engaging pin engaging holes not shown in the figure.

The supporting element 2 is composed of a back plate 2a, two side plates 2b, 2b formed by bending downward from both ends of the back plate 2a, and a holding plate 2c formed by bending inwardly from the lower ends of the two side plates 2b, 2b at the same time , composed of 2c. The two side plates 2b, 2b are the same as above, and they are rotatably connected in the direction of the two side plates 1b, 1b of the assembly element 1 by the hinge pin 3 . On the free end sides of the two side plates 2b, 2b, while the lifting element 6 is rotatably pivoted by the connecting pin 4, the two side ends of the actuating element 9 are provided with deep fitting guide grooves 2d, 2d. Among other components, the marked marks 2e and 2e are hinge pin insertion holes, the marked marks 2f and 2f are connecting pin insertion holes, the marked marks 2g and 2g are engaging holes, and the marked marks 2h and 2h are stoppers used in combination. moving hole.

The hinge pin 3 is a metal cylindrical rod provided with ring grooves 3d, 3d at both ends, and penetrates through the bearing holes 3e, 3e of the bearing elements 3a, 3a on the hinge pin assembly holes 1d, 1d of the assembly element 1, and connects The hinge pins of the supporting element 2 are inserted through the holes 2e, 2e, and the E-rings 3c, 3c of the locking ring grooves 3d, 3d are prevented from being pulled out by the spacers 3b, 3b.

The lifting element 6 is composed of a back plate 6a, two side plates 6b, 6b formed by bending from both sides of the back plate 6a to the vertical direction (including a slightly vertical direction) relative to the back plate 6a, and the two side plates 6b, 6b The assembly plate 6c formed by bending in the outer direction is composed of 6c. In addition, the lifting element 6 is also covered on the supporting element 2 . And on the side where the lifting element 6 is installed through the connecting pin 4 pivots, when the actuating element 9 of the round pin shape is assembled, the original pressing plate C is further installed on the assembling plates 6c, 6c. In addition, the height adjustment means 7 is formed by an adjustment screw 7a and a nut 7b assembled on the back plate 6a. It can be evenly pressed on the original supporting table d (invisible glass). Furthermore, in the structure of the document presser plate opening and closing device B, as described later, there is still a structure without a lifting element. In this case, the document presser plate C is assembled with a supporting element 2 . Furthermore, the indication mark 6f is a stopper pin insertion hole.

The connecting pin 4 is a cylindrical rod made of metal, and ring grooves 4c, 4c are provided at both ends, through the connecting pin insertion holes 2f, 2f of the supporting element 2 and the connecting pin connecting holes 6d, 6d of the lifting element 6. , the lifting element 6 is connected to the supporting element 2, and the gaskets 4a, 4a are used to prevent the E-rings 4b, 4b of the locking ring grooves 4c, 4c from being pulled out.

In the supporting element 2, the cam slider 10 and the spring bearing element 11 are slidably accommodated and assembled therein by being lifted up by the holding plates 2c and 2c. The cam slider 10 and the spring bearing element 11 are formed by a cylindrical column with a rectangular cross-section and a bottom surface. The pressure member 5 at one end of the cam slider 10 is provided with a flat upper surface that is inclined in one direction. At the same time as the cam portion 10a, a cover body 10c covering the exposed end of the pressure receiving element 5 is also provided. On the actuating element 9 at one end of the spring bearing element 11, an abutment portion 11a is protruded. It is worth mentioning that the abutting portion 11a is not an essential component, and one of the planes can be a flat portion. In addition, the cam slider 10 and the spring bearing element 11 are slidably accommodated in the supporting element 2 under the condition that the openings 10b, 10b and 11b, 11b (only one of them is shown in the figure) face each other, wherein the cam slider The cam portion 10a of the member 10 abuts against the pressure receiving element 5 , and the abutting portion 11a of the spring bearing element 11 abuts against the actuating element 9 .

In addition, in the embodiment, the actuating element 9 is provided with ring grooves 9b, 9b at both ends, and the E-rings 9a, 9a are engaged with the ring grooves 9b, 9b by passing through the actuating pin connecting holes 6e, 6e to prevent actuation. The element 9 is pulled out in the direction of the two side plates 6b, 6b of the lifting element 6. The actuating element 9 here is a cylindrical rod made of metal. In addition to the above-mentioned embodiment, it can also be formed by bending the top plate provided on the lifting element 6 inwardly. Moreover, the operating element 9 is rotatably assembled or fixed between the two side plates 6b, 6b.

Between the cam slider 10 and the spring bearing element 11, there are elastically arranged the openings 10b, 10b and 11b, 11b of the cam slider 10 and the spring bearing element 11 to the openings of the cam slider 10 and the spring bearing element 11. (only one of them is shown in the figure) is inserted inside, the elastic means 12 formed by the large-diameter coil springs 12a, 12a and the small-diameter coil springs 12b, 12b, through the aforementioned method, the cam portion 10a and the pressure member 5 are pressed Then, the abutting portion 11a is in a crimped contact state with the actuating element 9 . In addition, the number of elastic means 12 can be one or more than two, for example, two are juxtaposed, or as shown in the figure, the large-diameter coil springs 12a, 12a and the small-diameter coil springs 12b, 12b are overlapped and arranged. To strengthen the sliding effect of the cam slider 10 and the spring bearing element 11 in the direction away from each other.

The pressure element 5 is pivotally mounted on a metal pressure pin 5a between the two side plates 1b and 1b of the assembly element 1 and penetrates through the insertion hole 5d that connects the pressure pin 5a to the axial direction. The pressure receiving pin 5a is rotatably assembled and constituted by a sliding roller 5b made of synthetic resin. The cross-sectional shape of the sliding roller 5b is roughly quadrangular, and one side of the long axis end is used as a sliding joint 5c, which abuts against the flat cam portion 10a of the cam slider 10 . The contact surface of the cam part 10a and the slide roller 5b is coated with lubricating grease not shown in the figure. Moreover, the insertion hole 5d is provided in the position close to the lower end of the slide roller 5b, and the curved part 5e is attached to each corner|angular part. The material of the sliding roller 5b is not limited to synthetic resin, and may be materials such as sintered metal, ceramics, or machined objects.

In addition, the pressure pin 5a can be fixed to the pressure element assembly holes 1e, 1e by fastening its two ends, and the E-ring can also be used to prevent detachment and extraction. Or it can be rotatably assembled in the direction of assembling the pressure element assembling holes 1e, 1e. Furthermore, the pressure element 5 can be integrally formed by one or both of the pressure pin 5a and the sliding roller 5b, and can be rotatably assembled in the direction of assembling the pressure element assembly holes 1e, 1e. In addition, the cam portion can also be formed into a curved circular shape, and the sliding roller can be configured as a sliding contact portion abutting against the cam portion to form a shape in contact with the curved surface of the cam portion.

Next, the operation of the document pressing plate opening and closing device B in the aforementioned embodiment 1 will be described. As shown in Figure 2, Figure 3 and Figure 5, in the closed state of the original pressing plate C, because the weight of the original pressing plate C is greater than the elastic force of the elastic means 12 to push the original pressing plate C upward, the original pressing plate C can be closed by its own weight against the elastic force of the elastic means 12 and maintain a stable closed state. Furthermore, if the line of action of the elastic means 12 is moved below the pressure receiving element 5, the original pressing plate C can be rotated in the opening direction. In the closed state, the sliding roller 5b of the pressure element 5 makes surface contact with the sliding part 5c at the long axis end and the cam 10a of the cam slider 10, and uses the contact surface to bear the elastic force of the elastic means 12 in the most compressed state .

When the original pressing plate C is opened under the state shown in FIG. 1, FIG. 3 and FIG. The cam portion 10a moves from a high position to a low position while maintaining the surface contact state, so the original pressing plate C is opened under the elastic force of the elastic means 12 to counteract its own weight. When the original pressing plate C that is opened by hand is released, the cam portion 10a of the cam slider 10 will slide in one direction under the influence of the elastic means 12, and the abutment position of the sliding joint 5c of the sliding roller 5b will be affected by the cam slippery The frictional resistance of the cam portion 10a of the member 10 moving to a higher place, so that the original pressing plate C passes through the rotational moment generated by the support member 2 around the hinge pin 3 and the elastic force of the elastic means 12, as well as through the pressure member 5 and other The rotational moments generated by the sliding roller 5b abutting against the cam portion 10a of the cam slider 10 can be balanced with each other. Therefore, the original pressing plate C in the embodiment can maintain a stable and static state at an opening angle of more than 10 degrees.

And when closing and opening the original pressing plate C, the cam portion 10a resists the elastic force of the elastic means 12, and the original pressing plate C is affected by the slip joint portion 5c of the sliding roller 5b resisting sliding toward the high place of the cam portion 10a, so it is transparent. It is closed under the action of the pushing force of the hand relative to the original pressing plate C, the weight of the original pressing plate and the inertial force. However, when reaching a predetermined closing angle, such as 10 degrees, due to the automatic moment in the closing direction of the original press plate C, even if you let go of your hand, the press plate will automatically close. In addition, when the original pressing plate C is opened and closed, since the sliding contact portion 5c of the slide roller 5b and the cam portion 10a of the cam slider 10 are kept in surface contact, the load applied to the cam slider 10 is distributed, and the load on the cam slider 10 is also distributed. Since the lubricating grease can maintain its retention state, in addition to preventing excessive load from being applied to the cam slider 10, it is also effective against abrasion or strange noises caused by grease exhaustion over many years of use. prevent.

At this time, if a grease filling place is provided on the sliding surface of the sliding roller 5b and the cam portion 10a of the cam slider 10, the ability to maintain the grease can be further improved. And this grease filling place can be arranged on one of them of sliding roller or cam part or both are arranged simultaneously. The shape and location of the grease filling place are not limited to the above content.

And when the original is a thick and heavy original like a book, the original pressing plate C is pushed down after the heavy original is loaded on the original loading platform d (invisible glass). 6b rotates with the connecting pin 4 as the fulcrum, and the spring bearing element 11 is squeezed under the influence of the operating element 9 assembled on the two side plates 6b, 6b, and slides toward the direction of the cam slider 10 while resisting the elastic force of the elastic means 12 , the original pressing plate C will rotate with the lifting element 6 around the connecting pin 4 at the same time, and cover the upper surface of the heavy original horizontally. Therefore, the document pressing plate opening and closing device B of the present invention can stably press the document on the device body a regardless of the thickness of the document. Invisible glass is injected into the exposed part of the device body.

Example 2

8 to 10 are schematic diagrams of another embodiment of the actuating element of the document pressing plate opening and closing device. It is worth mentioning that, although the components with the same reference numerals have slightly different shapes, since they are the same as the components of the document pressing plate opening and closing device B in Embodiment 1, their descriptions are omitted. The actuating element 15 of the original pressing plate opening and closing device D in Embodiment 2 is erected between the two side plates 6b, 6b of the lifting element 6 by a pivot, and an actuating pin 15a of a metal cylindrical rod and the actuating pin 15a go to The insertion hole 15c provided in the axial direction passes through, and is rotatably assembled with respect to the actuation pin 15a, and is constituted by a lift roller 15b made of synthetic resin. The lifting roller 15b has a roughly quadrangular shape in section, and abuts the flat sliding portion 15d against the abutting portion 16a of the spring bearing element 16 . In addition, the marking mark 16b is the opening of one side end of the spring bearing element 16, and the contact surface between the abutting portion 16a of the spring bearing element 16 and the sliding contact portion 15d of the lifting roller 15b is coated with a not shown in the figure. Grease for lubrication. Moreover, the insertion hole 15c is provided in the approximate center part of the lifting roller 15b, and each corner part is further provided with the rounded part 15e.

It is worth noting that although the document press plate opening and closing device D in Embodiment 2 performs the same action as the document press plate opening and closing device B in the aforementioned embodiment 1, when the document is a heavy document 17 that is as thick as a book , the lifting roller 15b of the actuating element 15 will slide above the abutting portion 16a of the spring bearing element 16 by reversing the lifting element 6 . Therefore, in order to make surface contact with each other, while dispersing the load applied to the spring bearing member 16, since the retention state of lubricating grease is improved, it is possible to prevent the spring bearing member 16 from bearing an excessive load. It also prevents wear and noise caused by depleted grease even after years of use.

At this time, if a grease filling place is provided between the sliding surface of the lifting roller 15b and the abutting portion 16a of the spring bearing element 16, the maintaining ability of the grease can be further improved. The grease filling place can be set at one of the lifting roller 15b or the abutting portion 16a or at the same time. The shape and location of the grease filling place are not limited to the above content.

Example 3

11 to 14 are schematic diagrams of another embodiment of the pressure receiving device of the document pressing plate opening and closing device of the present invention. The pressure member 20 of the document presser plate opening and closing device E in Embodiment 3 is provided with a cover portion 20f covering the exposed end of the cam slider 21 exposed from the support member 2 thereof. As for the composition of other elements, the composition of the actuating element 15 is the same as that of the document pressing plate opening and closing device D in the second embodiment, and other components are the same as those of the original pressing plate opening and closing device B in the first embodiment. Therefore, the descriptions of elements with the same reference numerals are omitted here. In addition, although not shown in the figure, a cover body covering the exposed end of the supporting element of the spring bearing element can also be provided on one side of the operating element.

The pressure receiving element 20 in Example 3 has almost the same configuration as the pressure receiving element 5 in Example 1, but the pressure receiving element 20 is further provided with a cover portion 20f. In other words, although the pressure element 20 of the third embodiment is pivotally mounted on a metal pressure pin 20a between the two side plates 1b, 1b of the assembly element 1 and the pressure pin 20a is arranged on the shaft The insertion hole 20d in the direction penetrates through, and is rotatably assembled with respect to the pressure receiving pin 20a. It is composed of a sliding roller 20b made of synthetic resin, but there is an integrally formed part bent on the lower side of the sliding part 20c. A cover portion 20f is used to cover the exposed end of the supporting element. In addition, the cover portion 20f can also be disposed on other components and fixedly assembled in the direction of the sliding roller 20b. The cross-sectional shape of the sliding roller 20b is roughly rectangular, and part of the surface at the end of the long axis is used as a sliding joint 20c to abut against the inclined cam portion 21a of the cam slider 21 described later. In addition, reference numeral 21b is an opening at one side end of the cam slider 21 . The contact surface between the cam portion 21a and the sliding roller 20b is coated with lubricating grease, and the insertion hole 20d is provided in the axial direction of the lower part of the sliding roller 20b, and a curved portion 20e is provided at each corner. . In addition, the material of the sliding roller 20b is not limited to synthetic resin, and materials such as sintered metal, ceramics, and machined products may also be used. Further, the pressure receiving pin 20a and the sliding roller 20b may be formed individually or integrally, and are rotatably formed relative to the two side plates 1b, 1b of the assembly element 1 .

In Embodiment 3, the cover portion 20f provided on the slide roller 20b, as shown in FIGS. 12 to 14, covers the exposed end exposed from the support member 2 of the cam slider 21 when the original pressing plate is opened and closed. , so that when the original is placed on the original loading platform d (contact glass) as shown in FIG. .

Example 4

Fig. 15(a), (b) is a schematic diagram of another embodiment of the sliding roller of the pressure-receiving element of the document pressing plate opening and closing device of the present invention. In the figure, although the sliding part 23a of the cam slider 23 of the fourth embodiment is a plane, there is a curved part 23b formed on the opposite side thereof, and a plurality of ribs 23c are provided at the same time. In addition, the sliding joint portion 23a is further provided with a plurality of groove-shaped grease filling places 23e filled with lubricating grease. Furthermore, in the axial direction of the central part, an insertion hole 23d (not shown) through which the pressure receiving pin is rotatably inserted is provided. Also, the shape and number of grease filling places are not limited to this embodiment.

Example 5

Fig. 16 is a schematic diagram of another embodiment of the sliding roller of the pressure receiving element. In the figure, the sliding roller 24 of Embodiment 5 is stamped from a metal plate, and consists of a flat sliding joint 24a and is installed on both ends of the long axis of the sliding joint 24a, and is provided with common A pair of assembly pieces 24c, 24c passing through the through-holes 24b, 24b of the shaft center constitutes. In addition, although not explicitly shown in the figure, the insertion hole can also be penetrated by a pressure pin. In addition, the upper and lower ends of the sliding joint portion 24a are bent to form reinforcing pieces 24d, 24d.

It is worth mentioning that the purpose of the present invention can also be achieved by using the above-mentioned structural composition.

Example 6

Fig. 17 is a schematic diagram of another embodiment of the opening and closing device of the original pressing plate of the present invention. The document presser plate opening and closing device F of the sixth embodiment is different from the device of the first embodiment because it does not have a lifting element. In the figure, although the spring bearing element 26 with the opening 26a is installed, this element can also be omitted here. In the case of omission, the end of the elastic means 12 is in pressure contact with the inner side of the top plate 25d of the supporting element 25 . Although the original pressing plate opening and closing device F of Embodiment 6 does not have the lifting function of the original pressing plate opening and closing device C, since the structure of the pressure receiving element 5 is the same as that of Embodiment 1, it has the same function and effect, so it is omitted. illustrate. In addition, the support element 25 is formed by a back plate 25a, two side plates 25b, 25b bent from the lower parts of the two sides of the back plate 25a, and an embrace formed by bending the lower end portions of the two side plates 25b, 25b inwardly. Plates 25c, 25c and a top plate 25d formed by bending from one end of the back plate 25a. In addition, the indicator mark 25e indicating only one side is a pressing plate that presses against the top plate 25d. The other components marked with the same symbols as those in the document pressing plate opening and closing device B in Embodiment 1 are the same components, so the description is omitted here.

Example 7

Fig. 18 is a schematic diagram of yet another embodiment of the opening and closing device of the original pressing plate of the present invention. Compared with the sixth embodiment, the document pressing plate opening and closing device G of the seventh embodiment is different in that the assembly space 27a of the assembly element 27 is equipped with the assembly foot 28, and other structures such as the side plates 27b and the rear plate 27c are the same. The original pressing plate opening and closing device G of Embodiment 7 is assembled with the assembly foot 28 that can slide up and down the assembly insertion hole e provided on the device body a, and when the original is a heavy original that is as thick as a book, it has the function of The assembly element 27 rises upwards and horizontally covers the lifting function of the upper part of the heavy original. In addition, since the structure of the supporting member 25 is the same as that of the sixth embodiment, and the structure and operation principle of the pressure receiving member 5 are the same as those of the first embodiment, descriptions thereof are omitted.

Claims (16)

1. an opening-closing device of manuscript pressing plate, it comprises:

One assembly element, its have an assembling space and by these assembling space both sides the biside plate of standing that formed, and the direction of this assembling space toward device body to be assembled;

The support component of one manuscript pressing plate, its have a backboard and by this backboard the biside plate of bending that formed, and by a joint pin, the biside plate direction of one side of this biside plate toward this assembly element to be assembled rotationally;

One cam saddle, it receives assembling slidably in the inner direction toward this assembly element of this support component;

One pressure parts, it is connected with the cam part being installed in this cam saddle wherein side, and between the biside plate being arranged at this assembly element; And

One Compress Spring, it is flexibly arranged between the free end side of this cam saddle and this support component;

Wherein, this pressure parts more comprises the slide connecting part contacted with this cam part face.

2. opening-closing device of manuscript pressing plate as claimed in claim 1, wherein this pressure parts rotates by the movement of this cam part coordinating this cam saddle, keeps this cam part to contact with the face of this slide connecting part.

3. opening-closing device of manuscript pressing plate as claimed in claim 1, wherein the assembling space mounted perpendicular of this assembly element has an assembling foot, and this assembling foot can insert the assembling patchhole being arranged at this device body up or down.

4. opening-closing device of manuscript pressing plate as claimed in claim 1, wherein this pressure parts is rotatable.

5. opening-closing device of manuscript pressing plate as claimed in claim 1, wherein this pressure parts more comprises:

One by pad; And

One slip roller bearing, it is assembled in this rotationally by pad.

6. opening-closing device of manuscript pressing plate as claimed in claim 1, wherein this cam saddle is provided with the lid covering this pressure parts.

7. opening-closing device of manuscript pressing plate as claimed in claim 1, wherein the section of this pressure parts is in slightly rectangle.

8. opening-closing device of manuscript pressing plate as claimed in claim 1, wherein this pressure parts is punch process goods.

9. opening-closing device of manuscript pressing plate as claimed in claim 1, wherein this pressure parts is provided with consistent lubricant filling place of lubrication.

10. an opening-closing device of manuscript pressing plate, it comprises:

One assembly element, its have an assembling space and by these assembling space both sides the biside plate of standing that formed, and the direction of this assembling space toward device body to be assembled;

One support component, its have at least one backboard and by this backboard the biside plate of bending that formed, and by a joint pin, the biside plate direction of this biside plate toward this assembly element to be connected rotationally;

One lifting element, its have at least one backboard, by this backboard the biside plate of bending that formed and a manuscript pressing plate, this manuscript pressing plate allows the rotatable earth's axis pivot installing toward the direction being different from this support component of this biside plate at the free end of this support component biside plate by a connecting pin;

One pressure parts, its axle pivot is set up between the biside plate of this assembly element end;

One cam saddle, cam part is abutted against toward this pressure parts by it, and storage is assembled in the inside of this support component slidably; And

One Compress Spring, it, by being flexibly set between this cam saddle and this lifting element, strengthens this lifting element in the rotation overlapped on direction with this support component, and strengthens this support component toward the rotation at least one opening direction of this manuscript pressing plate;

Wherein, this pressure parts more comprises the slide connecting part contacted with this cam part face.

11. 1 kinds of opening-closing device of manuscript pressing plate, it comprises:

One assembly element, its have an assembling space and by these assembling space both sides the biside plate of standing that formed, and the direction of this assembling space toward device body to be assembled;

One support component, its have at least one backboard and by this backboard the biside plate of bending that formed, and by a joint pin, the biside plate direction of this biside plate toward this assembly element to be connected rotationally;

One lifting element, its have a backboard, by this backboard the biside plate of bending that formed and a top board, and being assembled with a manuscript pressing plate, this manuscript pressing plate allows this biside plate install toward the rotatable earth's axis pivot in the direction being different from this support component at the free end of this support component biside plate by a connecting pin;

One actuation element, it is installed in the position of circling round for fulcrum does with this connecting pin when this lifting element rotates, and wherein this position is the axle pivot installing department of this its support component of lifting element relatively;

One pressure parts, its axle pivot is set up between the biside plate of this assembly element end;

One cam saddle, cam part is abutted against toward this pressure parts by it, and storage is assembled in the inside of this support component slidably;

One spring fixed bearing element, its free end in this support component is abutted against this actuation element, and receives assembling slidably; And

One Compress Spring, it, by being flexibly set between this cam saddle and this spring fixed bearing element, strengthens this lifting element in the rotation overlapped on direction with this support component, and strengthens this support component toward the rotation at least one opening direction of this manuscript pressing plate;

Wherein, this pressure parts more comprises the slide connecting part contacted with this cam part face.

12. opening-closing device of manuscript pressing plate as claimed in claim 11, wherein the surface of contact of this actuation element and this spring fixed bearing element is formed by contacting with each other on surface.

13. opening-closing device of manuscript pressing plate as claimed in claim 12, wherein this actuation element is rotatable.

14. opening-closing device of manuscript pressing plate as claimed in claim 12, wherein this actuation element comprises:

One does untie-sell; And

One lifting roller bearing, it is assembled in this rotationally and does untie-sell.

15. opening-closing device of manuscript pressing plate as claimed in claim 11, wherein this pressure parts or this actuation element are provided with a lid of the bared end covering this cam saddle or this spring fixed bearing element.

16. 1 kinds of office automated machines, it uses the opening-closing device of manuscript pressing plate as described in any one of claim 1 to 15 between device body and manuscript pressing plate.