TWI646247B - Hinge and transaction machine with the hinge - Google Patents

Abstract

The invention provides a hinge with simple structure, small size and low price. For this reason, in a preferred embodiment, the hinge is provided with a friction torque generating means with an engaging mechanism, which includes a first engaging element, a second engaging element and an elastic means. The first engaging element is pivotally supported by the hinge rod and rotates together with the supporting element. The first engaging element has a plurality of recesses at a specific angular position of its axis. The second engaging element is pivotally supported by the hinge rod, and the second engaging element is opposite to the first engaging element and cannot rotate the assembly element. The second engaging element has a plurality of convex portions that fit into the concave portions of the first engaging element. The elastic means is installed on the hinge rod, and the first engaging element and the second engaging element are pressed against each other.

Description

Hinge and business machine provided with the hinge

The invention relates to a hinge and an office machine provided with the hinge. The hinge is connected to an original presser plate and an apparatus body of an office machine such as a photocopier or a compound machine (a machine equipped with a facsimile function or a printing function), so that the original The pressing plate can open and close the device body.

In the conventional technology, snap-in hinges are not generally used in the above-mentioned business machines, especially in photocopiers or multi-functional machines. Generally speaking, the structure of the heavy-duty manuscript pressing plate split hinge equipped with a manuscript automatic conveying device is more complicated and requires a more elastic compression coil spring. However, a lighter manuscript pressure without a manuscript automatic conveying device is provided. The hinged hinge of the plywood does not necessarily need to adopt the structural design as described above. Therefore, the current demand for slitting hinges for light original pressing plates is mainly focused on providing a hinge with a simple structure, which can generate an engagement stop effect at several slitting angles, and is inexpensive.

Generally, hinges that can cause the engagement stop action are commonly described in Japanese Patent Publication No. 2004-229106 (Patent Document 1) or Japanese Patent Publication No. 11-272187 (Patent Document 2), and are usually televisions. The support of the screen or the hinge of the display of the camera.

The opening and closing frequency of the hinge described in the above-mentioned Patent Document 1 or 2 is not high, and therefore, the operation can be sufficiently performed by its own structure. However, the hinge used in office machines such as photocopiers and multifunction machines has an opening frequency of about 100,000 times. Compared to the case of a television screen or video camera described in Patent Document 1 or 2, the opening and closing of office machines The frequency is not only much higher than that of TV screens and cameras, and when the original pressing plate of the business machine is in a closed state, the structure needs to be designed separately so that the original pressing plate will not suddenly open during transportation or after setting.

In view of the above-mentioned problems, an object of the present invention is to provide an inexpensive hinge and a business machine using the hinge, which have the advantages of small size and simple structure, and can not only Withstanding the high opening and closing frequency, the original pressing plate can also keep the closed state stably under the closing angle.

To achieve the above object, a hinge system of the present invention connects the device body and the original pressing plate, so that the original pressing plate opens and closes the device body. Among them, the hinge system includes: an assembly element, which is assembled on one side of the device body; a support element, which is assembled on one side of the original pressing plate; and a hinge lever, which is assembled on the assembly element with restricted rotation, The hinge lever can pivot to support the supporting element; and a friction torque generating means with an engaging mechanism, which is used to rotate the supporting element to the assembly element in a plurality of specific rotations based on the closed state of the original pressing plate. Engagement stop effect occurs at the angular position. The means for generating the friction torque with the engaging mechanism includes: a first engaging element, the hinge axis of which is pivotally supported on the hinge rod and rotates with the supporting element to hold the hinge shaft at a specific angular position of the axis of the first engaging element There are multiple recesses or protrusions in the relative position, and the first engagement element is made of a metal material with good abrasion resistance; a second engagement element is adjacent to the first engagement element and is restricted in rotation The second engaging element has a pair of convex or concave portions, the convex or concave portion of the second engaging element is fitted to the concave or convex portion of the first engaging element, and the second engaging element is It is composed of a metal material with good abrasion resistance; and an elastic means is mounted on the hinge rod and presses the first engaging element and the second engaging element to each other. Wherein, the convex portion or the concave portion provided on the first engaging element is sequentially dropped into the concave portion or the convex portion provided on the second engaging element by a plurality of rotation angles of the supporting element, so that the supporting element can be opposite to The engagement of the assembly element is stopped, and at the same time, the first recessed portion provided on one of the first engagement element and the second engagement element and located on the side of the device body is formed into a long hole shape, and the long hole shaped recess portion is opposite to the device The body receives a convex portion provided on the other of the first engaging element and the second engaging element from the opening angle of the original pressing plate of 0 degrees to a specific opening angle range, thereby forming a momentless state.

In addition, another hinge system of the present invention connects the device body and the original pressing plate, so that the original pressing plate opens and closes the device body. Among them, the hinge system includes: an assembly element, which is assembled on one side of the device body; a support element, which is assembled on one side of the original pressing plate; and a hinge lever, which is assembled on the assembly element with restricted rotation, The hinge lever can pivot to support the supporting element; and a friction torque generating means with an engaging mechanism, which is used to rotate the supporting element to the assembly element in a plurality of specific rotations based on the closed state of the original pressing plate. Engagement stop effect occurs at the angular position. The means for generating the friction torque with the engaging mechanism includes: a first engaging element, the axis of which is pivotally supported on the hinge rod and rotates with the supporting element to hold the first card The hinge element has a pair of convex or concave portions at the relative position of the hinge shaft at a specific angular position of the axis, and the first engagement element is made of a metal material with good wear resistance; a second engagement element, It is abutted against the first engaging element and pivotally supported by the hinge rod, so that the second engaging element cannot rotate to the assembly element. The second engaging element has a plurality of recesses or protrusions, and the recess or The convex part is fitted into the convex part or the concave part of the first engaging element, and the second engaging element is made of a metal material with good abrasion resistance; and an elastic means is installed on the hinge rod and makes The first engaging element and the second engaging element are crimped to each other. Wherein, the convex portion or the concave portion provided on the first engaging element is sequentially dropped into the concave portion or the convex portion provided on the second engaging element by a plurality of rotation angles of the supporting element, so that the supporting element can be opposite to The engagement of the assembly element is stopped, and at the same time, the first recessed portion provided on one of the first engagement element and the second engagement element and located on the side of the device body is formed into a long hole shape, and the long hole shaped recess portion is opposite to the device The body receives a convex portion provided on the other of the first engaging element and the second engaging element from the opening angle of the original pressing plate of 0 degrees to a specific opening angle range, thereby forming a momentless state.

In addition, according to another aspect of the present invention, a hinge system connects the device body and the original pressing plate, so that the original pressing plate opens and closes the device body. Among them, the hinge system includes: an assembly element, which is assembled on one side of the device body; a support element, which is assembled on one side of the original pressing plate; and a hinge lever, which is assembled on the assembly element with restricted rotation, The hinge lever can pivot to support the supporting element; and a friction torque generating means with an engaging mechanism, which is used to rotate the supporting element to the assembly element in a plurality of specific rotations based on the closed state of the original pressing plate. Engagement stop effect occurs at the angular position. The means for generating the friction torque with the engaging mechanism includes: a first engaging element, the hinge axis of which is pivotally supported on the hinge rod and rotates with the supporting element to hold the hinge shaft at a specific angular position of the axis of the first engaging element A relative position is provided with a first cam portion, the first cam portion is composed of a plurality of concave or convex portions, and the first engaging element is composed of a metal material with good wear resistance; Two engaging elements, which are opposite to the first engaging element and are pivotally supported by the hinge rod, so that the second engaging element cannot rotate the assembly element, and the second engaging element has a second cam portion, and the second cam The portion is composed of a pair of convex portions or concave portions. The convex portions or concave portions of the second cam portion are fitted to a plurality of concave portions or convex portions of the first engaging element. The second cam portion The second engaging element is made of a metal material with good abrasion resistance; and an elastic means is installed on the hinge rod and makes the first engaging element The engaging element and the second engaging element are crimped to each other. Among them, by multiple rotations on the supporting element The angle is such that the convex portion or the concave portion of the first cam portion provided on the first engaging element sequentially falls into the concave portion or the convex portion of the second cam portion provided on the second engaging element so that The supporting element can stop engaging with the assembly element, and at the same time, the first recessed portion provided on one of the first engaging element and the second engaging element and located on the device body side can be formed in a wide width. The wide and wide concave portion is in a range from the opening angle of the original pressing plate to a specific opening angle with respect to the device body, and the convex portion provided on the other of the first engaging element and the second engaging element is received. This results in a momentless state.

In a preferred embodiment, the engagement stopping effect is generated at least two of the opening positions of the original pressing plate relative to the device body at 0 degrees, 30 degrees, 45 degrees, 60 degrees, or 90 degrees.

In a preferred embodiment, the assembling element is provided with an assembling foot part, and the assembling foot part can be inserted into the assembling hole provided in the device body so as to be able to move up and down.

In a preferred embodiment, the hinge system is configured to adjust the elastic force of the elastic means.

In addition, in order to achieve the above object, an office machine according to the present invention includes the hinge described in any one of the above embodiments.

The present invention provides a hinge with the above structure, which requires a small number of parts and a simple structure, and can not only easily achieve miniaturization, but also be easily manufactured and supplied at a low price. In addition, the hinge provided by the present invention can prevent the original pressing plate from opening when it is closed, and even if the opening frequency is high, the change of the rotation torque with time is low, so it can be used stably for a long time.

1A, 1B, 1C‧‧‧ hinge

11‧‧‧Assembly components

11a‧‧‧ floor

11b‧‧‧Support bearing section

11c‧‧‧close hole

11d, 15a, 1802, 1808, 182, 20a

12‧‧‧Assemble the feet

12a‧‧‧ Pillar

12b‧‧‧Adhesive Department

13‧‧‧ support element

13a‧‧‧Pivot

13b, 191a, 192a, 193a, 194a, 195a, 196a ‧‧‧ circular shaft hole

13c‧‧‧Original Pressing Plate Assembly Department

13d‧‧‧Screw hole

13e, 13f‧‧‧Cutting Department

13g‧‧‧ protrusion

14‧‧‧ hinge lever

14a‧‧‧Head

14b‧‧‧Shaft

14c‧‧‧First deformed shaft

14d‧‧‧round shaft

14e‧‧‧Second deformation shaft

14f‧‧‧External thread

15‧‧‧first washer

15b‧‧‧oil storage hole

16A, 16B, 16C ‧‧‧ Friction torque generating means with engaging mechanism

17A, 17B, 17C‧‧‧First engaging element

1702a, 1702b, 1706a, 1706b, 172a, 172b

1703, 1707, 173‧‧‧ round hole

1704a, 1704b, 184a, 184b ‧‧‧ convex

1705, 171, 1801, 1807, 181‧‧‧ Disc Department

1708a, 1708b, 1709a, 1709b, 1710a, 1710b, 1711a, 1711b

1712‧‧‧The first cam part

174a, 174b, 175a, 175b, 176a, 176b, 177a, 177b, 1803a, 1803b, 1804a, 1804b, 1805a, 1805b, 1806a, 1806b

18A, 18B, 18C‧‧‧Second engagement element

1809a, 1809b ‧‧‧ ridge

1810‧‧‧Second cam section

183a, 183b‧‧‧Expansion

19‧‧‧ Flexible means

191, 192, 193, 194, 195, 196‧‧‧ disc springs

20‧‧‧Second washer

21‧‧‧nut

30‧‧‧ Photocopier

31‧‧‧device body

32‧‧‧Original Pressing Plate

33‧‧‧ Contact glass

34‧‧‧Operation Department

35‧‧‧Assembly hole

FIG. 1 is a schematic appearance diagram of a photocopier as an example of a business machine, which uses the hinge of Embodiment 1 of the present invention.

FIG. 2 is an explanatory diagram of the hinge of Embodiment 1 of the present invention, in which (a) is a perspective view, (b) is a perspective view viewed from another direction, and (c) is a front view.

Fig. 3 is an exploded perspective view of the first embodiment shown in Fig. 2.

FIG. 4 is a detailed structural perspective view of the first engaging element and the second engaging element of FIG. 3.

FIG. 5 is a schematic diagram of the engaging action during the opening and closing operation of the embodiment 1 shown in FIG. 2.

FIG. 6 is an explanatory diagram of a hinge according to Embodiment 2 of the present invention, where (a) is a perspective view, (b) is a perspective view viewed from another direction, and (c) is a front view.

Fig. 7 is an exploded perspective view of the second embodiment shown in Fig. 6.

FIG. 8 is a detailed structural perspective view of the first engaging element and the second engaging element of FIG. 7.

FIG. 9 is a schematic diagram of the engaging action during the opening and closing operation of the second embodiment shown in FIG. 6.

FIG. 10 is an explanatory diagram of a hinge according to Embodiment 3 of the present invention, in which (a) is a perspective view, (b) is a perspective view viewed from another direction, and (c) is a front view.

Fig. 11 is an exploded perspective view of the third embodiment shown in Fig. 10.

FIG. 12 is a detailed structural perspective view of the first engaging element and the second engaging element of FIG. 11.

FIG. 13 is a schematic diagram of the engaging action during the opening and closing operation of the third embodiment shown in FIG. 10.

In the following description, the hinge of the present invention connects the device body of the device body of the office machine such as a photocopier or a multifunction machine with the original pressing plate, so that the original pressing plate can open and close the device body. However, the hinge of the present invention is not limited to this, and it can also be applied to office machines such as printers, facsimiles, or scanners that have original crimping plates, or to various furniture with doors, display windows, etc.阖 Some equipment. Next, a preferred embodiment of the hinge of the present invention will be described in detail with reference to the related drawings, in which components having the same structure and function are denoted by the same component symbols. In addition, the present invention is not limited by the embodiments of the drawings. As long as it is within the scope of the patent application, various modified embodiments belong to the protection scope of the present invention.

1 to 5 show a hinge 1A according to the first embodiment of the present invention. Among them, the photocopier 30 shown in FIG. 1 includes elements such as a device main body 31, a document pressing plate 32, a contact glass 33, and an operation portion 34. The embodiment shown in FIG. 1 uses a pair of hinges 1A and 1A of the present invention to connect the apparatus body 31 of the photocopier 30 and the original pressing plate 32 so that the original pressing plate 32 opens and closes the device body 31. Here, the manuscript pressing plate 32 of the photocopier 30 is a type in which an automatic manuscript conveying device is not installed. Therefore, the two smaller and similar hinges 1A and 1A of the present invention are arranged in pairs. However, when an automatic document feeder is installed on the (Left side of the surface), other types of large hinges can also be used on the left side of the front, and the smaller hinge 1A of the present invention can be used only on the right side. As described above, the structure of the pair of left and right hinges 1A and 1A is the same in the illustrated embodiment. Therefore, the structure of only one of the hinges 1A will be described below.

The hinge 1A includes an assembly element 11, a support element 13, a hinge rod 14, and a friction torque generating means 16A with an engaging mechanism. The assembly element 11 is assembled on the side of the apparatus body 31 of the photocopier 30, and is made of SUS stainless steel, for example. The support element 13 is assembled on the side of the original pressure plate 32 of the photocopier 30, and is similarly made of SUS stainless steel, etc. Made of materials. The hinge rod 14 pivots and supports the support element 13 so that the support element 13 can rotate to the assembly element 11, and the hinge rod 14 is made of a material such as SUS stainless steel, for example. The friction torque generating means 16A with an engaging mechanism is to cause the card to be generated at a position where the rotation angle (opening angle) of the support member 13 is 0 degrees, 30 degrees, 60 degrees, and 90 degrees when the supporting member 13 rotates to the assembly member 11. Hoping to stop.

In the illustrated embodiment, the friction torque generating means 16A with the engaging mechanism is composed of the first engaging element 17A, the second engaging element 18A, and the elastic means 19. The first engaging element 17A is pivotally supported by the hinge rod 14 and rotates with the support element 13. The hinge rod 14 has its axis center in the same radius direction and is set at 0 degrees, 30 degrees, 60 degrees, and 90 degrees, respectively. A pair of recesses (including holes or holes) 174a (~ 177a) and 174b (~ 177b) facing each other, and the first engaging element 17A is made of, for example, a hardenable and annealed SK tool steel. The second engaging element 18A is pivotally supported by the hinge lever 14. The second engaging element 18A and the first engaging element 17A face each other, and the assembly element 11 cannot be rotated through the hinge lever 14. The second engaging element 18A has a pair of convex portions 184a and 184b (see FIG. 4). The convex portions 184a and 184b are fitted to the above-mentioned concave portions (holes) 174a and 174b of the first engaging element 17A, and the second card The closing element 18A, for example, is also made of SK tool steel. The elastic means 19 is composed of six disc springs 191 to 196 made of, for example, spring steel. The elastic means 19 is installed on the hinge rod 14 and presses the first engaging element 17A and the second engaging element 18A against each other. Pick up. The structure of each of the above elements will be described in more detail below.

The assembly element 11 includes a bottom plate 11a and a support bearing portion 11b. The support bearing portion 11b is formed by standing upright from the bottom plate 11a. An adhesive hole 11c is formed in the bottom plate 11a, and the adhesive portion 12b of the assembling leg portion 12 is inserted and tightly adhered. In addition, the support bearing portion 11 b is provided with a deformed shaft hole 11 d having an approximately elliptical shape, and the hinge rod 14 is inserted and penetrated. As shown in FIG. 5, the assembling element 11 inserts the pillar portion 12 a of the assembling leg portion 12 into the device body 31 of the photocopier 30. The assembling holes 35 provided on the rear upper surface are assembled into the apparatus body 31 of the photocopier 30.

The hinge lever 14 includes a head portion 14a and a shaft portion 14b. The shaft portion 14b includes a first deformed shaft portion 14c, and includes a circular shaft portion 14d and a second deformed shaft portion 14e. The vertical sectional shape of the shaft portion of the first deformed shaft portion 14c is the same as the shape of the deformed shaft hole 11d of the assembly element 11. The circular shaft portion 14d and the second deformed shaft portion 14e are provided from the first deformed shaft portion 14c toward the front end side. In addition, a male screw portion 14f is formed on an outer peripheral surface near the front end of the shaft portion 14b. The assembly element 11, the first washer 15, the support element 13, the first engagement element 17A, the second engagement element 18A, the disc springs 191 to 196, and the second washer 20 are sequentially installed on the shaft of the hinge lever 14. The component 14b is screwed onto the male screw portion 14f, so that the above-mentioned components are assembled into the state shown in FIG. 2. At this time, the first deformed shaft portion 14 c of the hinge rod 14 is inserted into the deformed shaft hole 11 d of the assembly element 11 and the deformed shaft hole 15 a of the first washer 15. Therefore, the assembly element 11 and the first washer 15 are non-rotatably mounted.于 于 articulated rod 14 is provided.

The first washer 15 includes, in addition to the deformed shaft hole 15 a described above, oil storage holes 15 b and 15 b. The shape of the deformed shaft hole 15 a is the same as the shape of the deformed shaft hole 11 d of the assembly element 11. The oil storage holes 15b, 15b are used to store the lubricant oil coated between the first washer 15 and the support member 13 to prevent the lubricant oil from being used up. The lubricating oil is used to reduce contact friction between the first washer 15 and the support member 13.

The supporting member 13 has a pivoting portion 13a, a circular shaft hole 13b, a manuscript pressing plate assembly portion 13c, screw holes 13d, 13d, and cutting portions 13e, 13f. The circular shaft portion 14d of the hinge rod 14 is inserted through the circular shaft hole 13b, thereby enabling the support element 13 to be rotatably assembled to the hinge rod 14. The original platen 32 of the photocopier 30 is screwed into the original platen assembly portion 13c through the screw holes 13d and 13d.

The first engaging element 17A is made of hardenable hard SK tool steel, and has a disc portion 171, bent portions 172a, 172b (see FIG. 4), a circular hole 173, and a recessed portion (in the illustrated embodiment). The holes in the middle are recesses) 174a and 174b, 175a and 175b, 176a and 176b, 177a and 177b. The bent portions 172 a and 172 b are provided at relative positions on the outer peripheral edge of the disk portion 171, and the circular hole 173 is provided at the center of the disk portion 171. The recesses 174a and 174b, 175a and 175b, 176a and 176b, 177a and 177b are respectively formed in pairs and face each other at 0, 30, 60 and 90 degrees in the same radial direction of the axis of the disk portion 171 on. When the first engaging element 17A is mounted on the shaft portion 14b of the hinge lever 14, the circular shaft portion 14d of the hinge lever 14 The circular hole 173 penetrating through the first engaging element 17A is inserted, and the bent portions 172 a and 172 b of the first engaging element 17A are respectively accommodated in the cutting portions 13 e and 13 f of the supporting element 13. Therefore, the first engaging element The element 17A is not rotatable to the supporting element 13, and the supporting element 13 and the first engaging element 17A can rotate together with the hinge rod 14. In addition, when the original pressing plate 32 is closed, the recesses 174a and 174b corresponding to the above-mentioned 0-degree position can form a momentless state within an angle range of -5 to +5 degrees of the original pressing plate 32. Therefore, the original pressing plate 32 Due to its weight, the plywood plate 32 can be kept in a closed state, so that the original platen plywood plate 32 does not open naturally when the original platen platen 32 is shaken or oscillated during transportation or installation.

The second engaging element 18A is also made of SK tool steel. The second engaging element 18A has a disc portion 181, a deformed shaft hole 182, expanded portions 183a, 183b, and convex portions 184a, 184b (see FIG. 4). And assembled with the first engaging element 17A facing each other. The expansion portions 183a, 183b are provided at relative positions on the outer periphery of the disc portion 181. The convex portions 184a and 184b are respectively provided on the expansion portions 183a and 183b, and protrude toward the first engaging element 17A side. The vertical cross-sectional shape of the shaft portion of the deformed shaft hole 182 of the second engaging element 18A is the same as the vertical cross-sectional shape of the shaft portion of the second deformed shaft portion 14 e of the hinge lever 14. When the second engaging element 18A is mounted on the shaft portion 14 b of the hinge lever 14, a part of the second deformed shaft portion 14 e of the hinge lever 14 is inserted into the deformed shaft hole 182 penetrating through the second engaging element 18A. Therefore, The second engaging element 18A cannot be rotated on the hinge rod 14, that is, it cannot be rotated on the assembly element 11. The convex portions 184a and 184b of the second engaging element 18A can be fitted into the concave portions 174a and 174b of the first engaging element 17A according to the relative rotation angle position between the second engaging element 18A and the first engaging element 17A. One of 175a, 175a and 175b, 176a and 176b, 177a and 177b, will stop engagement when they are fitted. In addition, the recesses 174a and 174b, 175a and 175b, 176a and 176b, 177a and 177b provided in the first engagement element 17A, and the projections 184a and 184b provided in the second engagement element 18A may be provided at opposite positions. This setting method can also be applied to the embodiments described below.

The elastic means 19 is composed of six spring steel disc springs 191 to 196. The disc springs 191 to 196 are used to press-contact the first engaging element 17A and the second engaging element 18A with each other, and the elastic means 19 penetrates. The circular shaft holes 191 a to 196 a of the disc springs 191 to 196 are rotatably attached to the second deformed shaft portion 14 e of the hinge lever 14. In the case of the illustrated embodiment, the arrangement directions of each of the disc springs 191 to 196 are as follows: Two of the disc springs 193 and 194 have convex surfaces arranged on the side facing the second engaging element 18A, and the other The four disc springs are The convex surfaces are arranged on a side facing the nut 21. However, the setting direction or number of the disc springs can be arbitrarily changed according to requirements. By increasing or decreasing the number of disc springs, the elastic force of the elastic means 19 can be adjusted.

On the front end side before the elastic element 19, the nut 21 is screwed to the external thread portion 14 f of the hinge rod 14 through the second washer 20. The shape of the deformed shaft hole 20a of the second washer 20 is the same as the vertical cross-sectional shape of the shaft portion of the second deformed shaft portion 14e of the hinge rod 14. The second washer 20 is non-rotatably assembled to the hinge rod 14 to prevent the nut 21 from loosening. . Further, a loosening preventing agent may be applied to the threaded surface of the nut 21 or the externally threaded portion 14f of the hinge rod 14. In addition, by increasing or decreasing the locking degree of the nut 21, the elastic force of the elastic means 19 can be adjusted.

Next, the operation of the hinge 1A will be described with reference to FIG. 5. In a state where the original presser plate 32 is mounted on the apparatus body 31 of the photocopying machine 30, the original presser plate assembly portion 13c assembled in the supporting member 13 of the hinge 1A of the original presser plate 32 will be parallel to the photoprinter together with the original presser plate 32. Machine's contact glass 33. At this time, the convex portions 184a and 184b of the second engaging element 18A of the hinge 1A (refer to FIGS. 3 and 4 at the same time) are fitted into the concave portions 174a and 174b of the first engaging element 17A to form a stable state. However, as described above, the recesses 174a and 174b of the first engaging element 17A are slightly longer than other recesses and have long arc-shaped holes. Therefore, when the original pressing plate 32 is closed, the original pressing plate 32 can be closed, for example. A torque-free state is formed in an angle range of -5 degrees to +5 degrees. Thereby, the original document pressing plate 32 can be stably maintained in a closed state due to its weight, and the original document pressing plate 32 can be prevented from being opened due to vibration or other factors during use or during transportation. Further, the concave portions 174a and 174b provided in the first engagement element 17A and the convex portions 184a and 184b provided in the second engagement element 18A may be provided at opposite positions.

Next, when the original pressing plate 32 is lifted to rotate the supporting element 13 upward, the first engaging element 17A that cannot rotate the supporting element 13 will also rotate on the circular shaft portion 11d of the hinge lever 14 together. At this time, the second engaging element 18A mounted on the circular shaft portion 11d of the hinge lever 14 does not rotate on the hinge lever 14. Therefore, when the first engaging element 17A (original pressing plate 32) rotates 30 degrees The convex portions 184a and 184b of the second engaging element 18A will be fitted to the concave portions 174a and 174b of the first engaging element 17A, respectively, and the engagement stop effect will be generated. Even if the operator lets go, the original pressing plate 32 will not fall, Thereby, the stopped state of the original pressing plate 32 at the 30-degree open position is ensured.

Next, similarly, the convex portions 184a and 184b of the second engaging element 18A will be fitted to the concave portions of the first engaging element 17A in a state where the original pressing plate 32 is opened at 60 degrees, respectively. 176a and 176b generate an engagement stop effect, thereby ensuring the stop state of the original pressing plate 32 at the 60-degree open position. When the original pressing plate 32 is opened at 90 degrees, the convex portions 184a and 184b of the second engaging element 18A are respectively fitted into the concave portions 177a and 177b of the first engaging element 17A to generate an engagement stop effect, thereby ensuring that The original pressing plate 32 is stopped at the 90-degree open position. The process of closing the manuscript pressing plate 32 is the same, and the same engagement stop effect will be produced at 60 and 30 degrees. Therefore, the manuscript pressing plate can be maintained in a stopped state at each position. In addition, the opening operation of the original pressing plate 32 at 90 degrees or more is stopped because the protruding portion 13g provided on the pivoting portion 13a of the supporting element 13 abuts the bottom plate 11a of the assembling element 11. This point is the same in the second and third embodiments described below.

6 to 9, the hinge 1B according to the second embodiment of the present invention will be described. The difference between the hinge 1B of the second embodiment and the hinge 1A of the first embodiment is the structure of the engaging element. The structure of the first engaging element 17B and the second engaging element 18B with the friction torque generating means 16B of the second embodiment is the same as the first of the friction torque generating means 16A with the engaging mechanism of the first embodiment described above. The structures of the engaging element 17A and the second engaging element 18A are different. The other constituent elements of the second embodiment are the same as those of the first embodiment. Therefore, the same constituent elements are denoted by the same element symbols as those of the first embodiment, and descriptions thereof are omitted. The first engaging element 17B and the second engaging element 18B of the second embodiment are also made of SK tool steel.

The main differences between the first engaging element 17B and the second engaging element 18B of the second embodiment shown in FIGS. 6 to 9 and the first engaging element 17A and the second engaging element 18A of the first embodiment are as follows. Said: In the first embodiment, the paired recesses 174a and 174b, 175a and 175b, 176a and 176b, 177a and 177b are provided at a plurality of rotation angle positions of the first engaging element 17A, but in the embodiment, In 2, the structure corresponding to the recessed portion is provided on the second engaging element 18B side. In addition, in Embodiment 1, the pair of convex portions 184a and 184b are provided on the second engaging element 18A. In Example 2, the structure corresponding to the convex portion is provided on the first engagement element 17B side. In other words, the first engaging element 17B in the hinge 1B of the second embodiment shown in FIGS. 6 to 9 has bent portions 1702a, 1702b, and a circular hole 1703. The circular shaft portion 14d of the hinge rod 14 is inserted. To the circular hole 1703, the bent portions 1702a and 1702b are respectively inserted into the cutting portions 13e and 13f of the support member 13. Thereby, the first engaging element 17B cannot rotate the supporting element 13, and when the original pressing plate 32 of the photocopier 30 is opened and closed, as the supporting element 13 rotates, the circular shaft portion 14 d of the hinge lever 14 Turn on. Circle of the first engaging element 17B The disk portion 1701 is provided with a pair of convex portions 1704a and 1704b. In addition, the second engaging element 18B of the hinge 1B of the second embodiment shown in FIG. 6 to FIG. 9 has a disk portion 1801, and the second deformed shaft portion 14e of the hinge rod 14 is inserted and penetrated through the disk portion 1801. The shaft hole 1802 is deformed, so that the second engaging element 18B is mounted on the assembly element 11, and the assembly element 11 cannot be rotated through the hinge rod 14. The second engaging element 18B has a pair of recessed portions (represented as recessed portions in the illustrated embodiment) that are disposed at the positions of 0 °, 30 °, 60 °, and 90 ° in the same radial direction of the axis. Holes) 1803a and 1803b, 1804a and 1804b, 1805a and 1805b, 1806a and 1806b. The recesses 1803a and 1803b are formed in the shape of a long hole similarly to the recesses 174a and 174b in the first embodiment. Further, the convex portions 1704a and 1704b provided in the first engaging element 17B and the concave portions 1803a and 1803b, 1804a and 1804b, 1805a and 1805b, 1806a and 1806b provided in the second engaging element 18B may be provided at opposite positions.

Therefore, when the original pressing plate 32 of the photocopier 30 is opened and opened, when the supporting element 13 is rotated, the first engaging element 17B and the supporting element 13 are rotated together. At this time, the convex portion on the first engaging element 17B 1704a and 1704b will be sequentially transferred and fitted to the respective paired recesses 1803a and 1803b, 1804a and 1804b, 1805a and 1805b, and 1806a provided in the second engagement member 18B according to the rotation angle position of the first engagement member 17B. An engagement stop action is generated with 1806b, and the original pressing plate 32 is held in a stopped state at each angular position (see FIG. 9). In addition, since the recesses 1803a and 1803b are long holes, the protrusions 1704a and 1704b fall into the recesses 1803a and 1803b within the opening angle range of -5 to +5 degrees of the original pressing plate 32. No torque state. Thereby, the original document pressing plate 32 can be stably maintained in a closed state due to its weight, and the original document pressing plate 32 can be prevented from being opened due to vibration or other factors during use or during transportation. The other operation modes are the same as those in the first embodiment, so detailed description is omitted here.

Next, a hinge 1C according to a third embodiment of the present invention will be described with reference to FIGS. 10 to 13. The difference between the hinge 1C of the third embodiment and the hinge 1A of the first embodiment is the material and structure of the engaging element. The material and structure of the first engaging element 17C and the second engaging element 18C with the friction torque generating means 16C of the third embodiment are the same as those of the friction torque generating means 16A with the engaging mechanism of the first embodiment. Materials and structures of the first engaging element 17A and the second engaging element 18A are different. The other constituent elements of the third embodiment are the same as those of the first embodiment. Therefore, the same constituent elements are denoted by the same element symbols as those of the first embodiment, and descriptions thereof are omitted. In addition, the first engaging element 17C and the second engaging element 18C of the third embodiment It can be, for example, made of chromium molybdenum steel (SCM), which has good quenching and annealing conditions, and has good mechanical properties.

The main differences between the first engaging element 17C and the second engaging element 18C of the third embodiment shown in FIGS. 10 to 13 and the first engaging element 17A and the second engaging element 18A of the first embodiment are as follows. Said: In the first embodiment, the paired recesses 174a and 174b, 175a and 175b, 176a and 176b, 177a and 177b are provided at a plurality of rotation angle positions of the first engaging element 17A, but in the embodiment, In 3, the structure corresponding to the recessed portion is replaced with the first cam portion 1712, and the first cam portion 1712 is formed on the disc portion 1705 of the first engagement element 17C (see FIG. 12). The first cam portion 1712 has concave portions 1708a and 1708b, 1709a and 1709b, 1710a and 1710b, 1711a and 1711b that extend radially from the circular hole 1707 to the outer periphery and are paired. In addition, in Embodiment 1, the pair of convex portions 184a and 184b are provided on the second engaging element 18A, but in Embodiment 3, the structure corresponding to the convex portion is replaced with the second cam portion 1810. The two cam portions 1810 are composed of a pair of convex portions 1809a and 1809b, and the convex portions 1809a and 1809b extend from the deformation shaft hole 1808 of the second engaging element 18C along the diagonal position toward the outer peripheral direction. In addition, the concave portions 1708a and 1708b, 1709a and 1709b, 1710a and 1710b, 1711a and 1711b provided in the first engaging element 17C, and the convex portions 1809a and 1809b provided in the second engaging element 18C may be provided in opposite directions. Location. In other words, the first engaging element 17C in the hinge 1C of the embodiment 3 shown in FIGS. 10 to 13 has the bent portions 1706a, 1706b and the circular hole 1707, and the circular shaft portion 14d of the hinge rod 14 is inserted. To the circular hole 1707, the bent portions 1706a and 1706b are respectively inserted into the cutting portions 13e and 13f of the support member 13. Thereby, the first engaging element 17C cannot rotate the supporting element 13, and when the original pressing plate 32 of the photocopier 30 is opened and closed, as the supporting element 13 rotates, the circular shaft portion 14 d of the hinge lever 14 Turn on. A first cam portion 1712 is provided on the disc portion 1705 of the first engaging element 17C. The first cam portion 1712 has fan-shaped radial shapes formed at positions of 0 °, 30 °, 60 °, and 90 °, respectively. The pair of concave stripe portions 1708a and 1708b, 1709a and 1709b, 1710a and 1710b, 1711a and 1711b. Wherein, the recessed portions 174a and 174b in the first embodiment are long holes. Correspondingly, the widths of the recessed portions 1708a and 1708b in this embodiment are larger than those of the other recessed portions 1709a and 1709b, 1710a and 1710b, and 1711a and The width of 1711b can form a torque-free state in the range of -5 ° to + 5 ° of the original pressure plate 32. Thereby, the original document pressing plate 32 can be stably maintained in a closed state under the influence of its weight, preventing the original document pressing plate 32 from being used. It is opened due to vibration and other factors during transportation or transportation. In addition, the second engaging element 18C in the hinge 1C of the third embodiment shown in FIGS. 10 to 13 has a disk portion 1807, and the second deformed shaft portion 14e of the hinge rod 14 is inserted through the disk portion 1807 and provided. The deformed shaft hole 1808 enables the second engaging element 18C to be mounted on the assembly element 11, and the assembly element 11 cannot be rotated through the hinge rod 14. As described above, the second engaging element 18C is formed with the second cam portion 1810, and the second cam portion 1810 is composed of a pair of convex portions 1809a and 1809b.

Therefore, when the original pressing plate 32 of the photocopier 30 is opened and opened, when the supporting element 13 is rotated, the first engaging element 17C and the supporting element 13 are rotated together. At this time, the second engaging element 18C is The second cam portion 1810 formed by the convex portions 1809a and 1809b will be sequentially transferred and fitted into the first cam portion 1712 provided in the first engagement element 17C according to the rotation angle position of the first engagement element 17C. The pair of recessed portions 1708a and 1708b, 1709a and 1709b, 1710a and 1710b, 1711a and 1711b cause the engagement stop action to keep the original pressure plate 32 in a stopped state at each angular position (see FIG. 13). The other operation modes are the same as those in the first embodiment, so detailed description is omitted here.

In addition, the present invention is not limited to the structure of each of the above embodiments. For example, in the first to third embodiments, the first engaging element can be rotated together with the supporting element after being assembled, and the second engaging element cannot be rotated to the assembled element after being assembled, but in other embodiments, the opposite can also be used. Way to set. After the second engaging element is assembled, it can also be rotated together with the supporting element, and after the first engaging element is assembled, it can also be set to be unable to rotate the assembled element. In addition, the recessed portion, the protruding portion, or the recessed portion and the protruding portion formed on the first engaging element or the second engaging element may be disposed at angular positions other than 0 degrees, 30 degrees, 60 degrees, and 90 degrees. In addition, the above-mentioned multiple concave portions, convex portions or concave strip portions, convex strip portions are not necessarily provided in the same radial direction, and multiple concave portions or concave strip portions may be provided in different radial directions, and at different radii. A plurality of convex portions or convex strip portions are provided in the direction so as to correspond to the above-mentioned concave portions or concave strip portions. In addition, it is not necessary to use a disc spring for the elastic means, and a compression coil spring may be used instead. Therefore, as long as those skilled in the art can easily think of the modified embodiments according to the above description, all belong to the protection scope of the present invention.

With the above configuration, the present invention can provide a hinge with a small number of required parts and a simple structure, which can not only easily achieve miniaturization, but also can be easily manufactured and supplied at a low price. In addition, when the original pressing plate is in a closed state relative to the device body, the hinge of the present invention can prevent the original pressing plate from being opened during its transportation or use, so it can be stable for a long time. To use.

Claims (7)

A hinge is used to connect a device body with a manuscript pressing plate, so that the manuscript pressing plate opens and closes the device body. The hinge includes: an assembly element that is assembled on one side of the device body; A supporting element, which is assembled to one side of the original pressing plate; a hinge lever, which is assembled to the assembly element with restricted rotation, the hinge lever is pivotably pivoted and supports the supporting element; and an engaging mechanism Means for generating frictional torque is to make the supporting element rotate and engage the assembly element, and the engagement stop action is generated at a plurality of specific rotation angle positions based on the closed state of the original pressing plate as a reference. The means for generating the friction torque includes: a first engaging element, the axis of which is pivotally supported by the hinge rod and co-rotates with the supporting element, and holds the hinge shaft at a specific angular position of the axis of the first engaging element There are a plurality of recesses or protrusions at the relative positions of the first engaging element, and the first engaging element is made of a metal material with good abrasion resistance; a second engaging element is adjacent to the first engaging element The second engaging element has a pair of convex portions or concave portions, and the convex portion or concave portion of the second engaging element is fitted into the concave portion of the first engaging element or A convex part, and the second engaging element is made of a metal material with good abrasion resistance; and an elastic means is installed on the hinge rod, and the first engaging element and the second engaging element The engaging elements are crimped to each other, and the convex or concave portions provided on the first engaging element are sequentially dropped into the concave or convex portions provided on the second engaging element by a plurality of rotation angles of the supporting element. The first recessed portion provided on one of the first engagement element and the second engagement element and located on the device body side is configured so that the supporting element can stop engaging with the assembly element. It has a long hole shape, and the long hole shaped recess is relative to the device body from the opening angle of the original pressure plate to a specific opening angle range, and is provided to the first engaging element and the second engaging element. The other side of the convex part, thereby forming weakness State. A hinge is used to connect a device body with a manuscript pressing plate, so that the manuscript pressing plate opens and closes the device body. The hinge includes: an assembly element that is assembled on one side of the device body; A supporting element, which is assembled to one side of the original pressing plate; a hinge lever, which is assembled to the assembly element with restricted rotation, the hinge lever is pivotably pivoted and supports the supporting element; and an engaging mechanism Means for generating frictional torque is to make the supporting element rotate and engage the assembly element, and the engagement stop action is generated at a plurality of specific rotation angle positions based on the closed state of the original pressing plate as a reference. The means for generating the friction torque includes: a first engaging element, the axis of which is pivotally supported by the hinge rod and co-rotates with the supporting element, and holds the hinge shaft at a specific angular position of the axis of the first engaging element There is a pair of convex portions or concave portions at a relative position of the first engaging element, and the first engaging element is made of a metal material with good abrasion resistance; a second engaging element is abutting the first engaging element The engaging element is pivotally supported by the hinge rod, so that the second engaging element cannot rotate to the assembly element. The second engaging element has a plurality of concave or convex portions, and the concave or convex portion of the second engaging element. Fit into the convex or concave part of the first engaging element, and the second engaging element is made of a metal material with good abrasion resistance; and an elastic means is installed on the hinge rod, and The first engaging element and the second engaging element are crimped to each other, and the convex or concave portions provided on the first engaging element are sequentially dropped into the first engaging element by a plurality of rotation angles of the supporting element. The concave or convex portion of the second engaging element is provided so that the supporting element can stop engaging with the assembly element, and at the same time, the supporting element can be disposed between the first engaging element and the second engaging element. One of the first recesses located on the side of the device body is configured as a long hole, and the long hole-shaped recess is in a range from the opening angle of the original pressing plate to a specific opening angle range with respect to the device body. The first engaging element and the second engaging element The other of the convex portion, thereby forming a torque-free state. A hinge is used to connect a device body with a manuscript pressing plate, so that the manuscript pressing plate opens and closes the device body. The hinge includes: an assembly element that is assembled on one side of the device body; A supporting element, which is assembled to one side of the original pressing plate; a hinge lever, which is assembled to the assembly element with restricted rotation, the hinge lever is pivotably pivoted and supports the supporting element; and an engaging mechanism Means for generating frictional torque is to make the supporting element rotate and engage the assembly element, and the engagement stop action is generated at a plurality of specific rotation angle positions based on the closed state of the original pressing plate as a reference. The means for generating the friction torque includes: a first engaging element, the axis of which is pivotally supported by the hinge rod and co-rotates with the supporting element, and holds the hinge shaft at a specific angular position of the axis of the first engaging element A first cam portion is provided at a relative position of the first cam portion. The first cam portion is composed of a plurality of concave or convex strip portions, and the first engaging element is made of a metal material with good abrasion resistance. A second engaging element, which is opposite to the first engaging element and is pivotally supported by the hinge rod, so that the second engaging element cannot rotate to the assembly element, and the second engaging element A second cam portion is provided. The second cam portion is composed of a pair of convex or concave portions. The convex or concave portions of the second cam portion are fitted to the first engaging element. A concave portion or a convex portion, the second cam portion is composed of a pair of convex portions or concave portions, and the second engaging element is made of a metal material with good abrasion resistance; and An elastic means is installed on the hinge rod and press-fits the first engaging element and the second engaging element to each other, wherein the first engaging element and the second engaging element are arranged on the first element by a plurality of rotation angles of the supporting element. The convex portion or the concave portion of the first cam portion of the engaging element sequentially falls into the concave portion or the convex portion of the second cam portion provided on the second engaging element, so that the supporting element The engagement with respect to the assembly element can be stopped, and at the same time, the first engagement element and the second engagement element can be disposed at the same time. One of the first concave strips on the side of the device body is formed in a wide width. The wide width of the concave portion is from the opening angle of the original pressing plate to a specific opening angle with respect to the device body. The range receives a convex portion provided on the other of the first engaging element and the second engaging element, thereby forming a moment-free state. The hinge as described in any one of the scope of claims 1 to 3, wherein the engagement stop effect is when the opening position of the original pressing plate relative to the device body is 0 degrees, 30 degrees, 45 degrees, At least two of 60 or 90 degrees. According to the hinge according to any one of claims 1 to 3, wherein the assembly element is provided with an assembly foot, and the assembly foot can be vertically inserted into an assembly provided in the device body. hole. The hinge according to any one of claims 1 to 3 of the scope of patent application, which is configured to adjust the elastic force of the elastic means. An office machine including the hinge according to any one of claims 1 to 6 of the scope of patent application.