TW202248547A - Hinge and business machine using the same - Google Patents

Abstract

This invention provides a hinge and a business machine using the same. The hinge includes an installation box installed on the side of the device body of the business machine and having a sliding member receiving part thereinside with one end open; a supporting member supporting the manuscript pressing plate, assembled to a pair of side plate portions of the installation box at the open end through a hinge shaft so as to be rotatable, and having an actuating cam portion on the side facing the sliding element receiving part; a sliding element accommodated in the sliding element receiving part and capable of sliding, wherein a passive cam portion is arranged on the side of the sliding element connected to the actuating cam portion; and an elastic part elastically arranged between the sliding element and the inner bottom part of the sliding element receiving part. Wherein, the side of the installation box, which faces the actuating cam portion, the passive cam portion and the sliding element, is provided with a partition portion.

Description

Hinges and business machines using the hinges

The present invention relates to a hinge, which is especially suitable for business machines such as small photocopiers, and connects the original pressing plate of such business machines to the device body in an openable and closable manner.

Conventional business machines used in offices, such as photocopiers, compound machines, facsimile machines, scanners, printing machines, etc., are mostly equipped with an original placement table with an exposure glass on the device body, and on the original placement table The upper cover is provided with an original pressing plate that can be opened and closed with it. The original document pressing plate makes the original document placed on the original document loading table close to the original document loading table, so as to prevent external light from passing through the exposure glass from affecting the imaging system in the device body. In order to install the document pressing plate on the device body so that it can be opened and closed relative to the device body, hinges of various structures are known in the prior art.

Hinges having the aforementioned functions are known, for example, as described in Japanese Patent Laid-Open No. 2018-21586. In the hinge described in Japanese Patent Laid-Open No. 2018-21586, the installation box is installed on the side of the device body, and the support for supporting the original press plate is installed on the installation box through the hinge shaft so that it can be opened and closed. It is slidably arranged in the installation box and abuts against the cam portion provided on the support member, and the elastic member composed of a compressed coil spring is elastically arranged between the slide member and the bottom of the installation box; in order to make the sliding smoother, the sliding Lubricating oil such as grease is applied between the member and the cam portion provided on the support member. In this way, when the hinge is installed on the device body, when the original is placed on the original loading table and the original pressing plate is closed, the end of the original will contact the cam portion coated with lubricating oil, which will cause the original to be dirty; In order to solve this problem, a shielding portion is provided on the side of the sliding member close to the original loading platform.

According to the hinge described in Japanese Patent Laid-Open No. 2018-21586, it prevents the end of the original from contacting the cam when the original is placed on the original table or the original pressing plate is closed, thereby preventing the end of the original from being lubricated. dirty. However, since lubricating oil is also applied between the slider and the mounting box, the end of the original will still touch the shielding portion provided on the slider, so the problem that the original is dirty by the lubricating oil cannot be sufficiently prevented.

The object of the present invention is to provide a hinge that can reliably prevent the end of the original from coming into contact with the cam when the original is placed on the original table or when the original is placed on the original table to open and close the original pressing plate. parts or sliders.

In order to solve the above-mentioned problems, the hinge of the present invention includes: an installation box, a supporting member, a slider and an elastic member; the installation box is installed on the side of the device body of the business machine, and has an open sliding member receiving part one by one inside; The part supports the original pressing plate, is assembled to the pair of side plates of the installation box on the open end side through a hinge shaft to be rotated, and has an actuating cam part on the side facing the sliding part receiving part; the sliding part is The slider is accommodated in the storage part to slide, and the side of the actuating cam part connected with the active cam part has a passive cam part; the elastic part is elastically arranged between the slider and the inner bottom of the slider storage part. Wherein, the side of the installation box is provided with a partition plate on the side facing the actuating cam portion, the passive cam portion and the sliding member.

In addition, in the hinge of the present invention, the supporting member is provided with a partition accommodating portion for accommodating the partition portion.

Furthermore, in the hinge of the present invention, the partition part is flat or curved, and the flat or curved partition is provided with singular or plural slits.

In addition, in the hinge of the present invention, the partition receiving portion is in the shape of a groove or a hole, or a groove-shaped receiving portion further cut on the front side or left and right sides.

In addition, in the hinge of the present invention, the elastic member is a compression coil spring, and a damper device is housed inside it, and the damper device starts to operate from a specific closing angle of the original pressing plate.

And, the office machine of the present invention uses the hinge as described above.

Due to the above structure of the present invention, even if the end of the document placed on the document stage for photocopying comes into contact with the hinge, the partition provided in the mounting box will function to prevent the end of the document from contacting the hinge provided in the slider. The passive cam part, the actuating cam part on the support side, and the front side of the slider can almost completely prevent the end of the original from being soiled by lubricating oil. In addition, the present invention can also provide a business machine that exhibits the above functions and effects.

Hereinafter, with reference to the drawings, taking a photocopier as an example of a business machine, the embodiment of the hinge of the present invention and the business machine using the hinge will be described.

As shown in FIG. 1, reference numeral 1 schematically represents a photocopier which is one example of office equipment. The photocopier 1 is not limited to the form shown in the figure, but also includes other structures. According to the drawings, the photocopier 1 includes a device body 2 and an original pressing plate 3. The original pressing plate 3 (hereinafter also referred to as a cover or cover 3 in the scope of this specification and patent claims) can be opened and closed through a hinge 10. Installed on the device body 2.

The hinge 10 of the present invention is used to openably install the original pressing plate 3 on the device body 2 of the photocopier 1, and usually has a pair of left and right. But because the structures of the two hinges 10 are the same, only one of them will be described below. Again, in the present embodiment, take photocopier 1 as the structure that has hinge 10, but except photocopier 1, business machines such as compound machine, facsimile machine, scanner, printing machine also can be used as between device body and original document press plate. Or a structure in which hinges 10 are provided between the lids. In addition, when describing the function and effect of the hinge 10 of the present invention, it is explained on the premise that the same structure has a pair of left and right.

The hinge 10 of the present invention includes a mounting box 5 , a sliding part 8 , a supporting part 7 and an elastic part 13 . The installation box 5 is installed on the rear upper end side of the device body 2, and has a slider receiving portion 5a with an open top (or one end is liberated); Sliding in the up and down direction, the upper side has a passive cam portion 8a; the supporting member 7 supports the original pressing plate 3 at the rear end of the original pressing plate 3, and is rotatably installed on the installation box 5 through the hinge shaft 9, and is provided on the lower side with a The active cam portion 7c connected to the driven cam portion 8a; the elastic member 13 is a member like a compressed coil spring elastically connected between the sliding member 8 and the installation box 5 . Wherein, the upper front end of the installation box 5 is provided with an upwardly extending flat plate partition 11 , which is opposite to the actuating cam 7c, the driven cam 8a, and the sliding member 8 . The shape and structure of the partition part 11 is flat in this embodiment, but if because of the design of the installation box or other reasons, the partition part 11 can also be designed as a shape other than flat, for example, curved or provided with a narrow Seam and other shapes. When the document presser 3 is closed, the support member 7 side is provided with a partition accommodating portion 7 d on the lower side thereof for accommodating the partition portion 11 . In addition, what is shown by the code|symbol 7f in the support board part 7b is the attachment hole for attaching the cover body 3. As shown in FIG.

In this embodiment, the mounting box 5 is a resin molded product such as POM rich in mechanical strength, and includes a flange portion 5b, a pair of side plate portions 5d, 5d, and a stopper portion 5e in addition to the slider housing portion 5a. The edge portion 5b is provided around the upper end of the mounting box 5, and a pair of side plate portions 5d, 5d protrude upward at a certain interval from the left and right sides of the flange portion 5b, and each has a shaft center hole 5c, 5c communicating with each other. A stopper portion 5e is provided on the rear side of the flange portion 5b. In addition, vertical reinforcement bars 5f, 5f are provided on the rear side of the installation box 5, and a female screw hole 5g for installation is provided on one side of the rear portion of the lower end side of the installation box 5.

The installation state of installation box 5 relative to device body 2, as shown in Figure 2, is that installation box 5 is inserted into the installation hole 2a that its rear end portion of the device body 2 of photocopier 1 establishes downwards, then inserts ( Or locked into) the mounting screw 4 on the rear end side of the device body 2 is locked into the internal threaded hole 5g for mounting to be fixed in the mounting hole 2a. In addition, here, the installation box 5 can be simply inserted and fixed or locked in the installation hole 2a.

Next, in this embodiment, the support member 7 is, like the mounting box 5, a resin molded product such as POM rich in mechanical strength, and includes a connecting portion 7a inserted between the side plate portions 5d and 5d provided on the mounting box 5. ; and the connecting portion 7a front side integrally formed, the rectangular support plate portion 7b in the left-right direction; the action cam portion 7c located at the lower part of the support plate portion 7b and the connecting portion 7a. The underside of its support plate portion 7b of the support member 7 is provided with a partition receiving portion 7d in the shape of a rectangular groove, but the shape and structure of the partition receiving portion 7d are not limited to the appearance of this embodiment, and can also be cut, for example. The shape of the front side or the left and right sides of the partition accommodating part 7d is made into a curved shape according to the shape of the partition part 11. Furthermore, the supporting member 7 is rotatably supported by the hinge shaft 9, and the hinge shaft 9 is inserted into the connection hole 7e provided on the connection part 7a through the shaft support holes 5c, 5c of the side plate parts 5d, 5d of the installation box 5. Also, as shown in FIG. 7 , the hinge shaft 9 has a round rod shape with a flange portion 9 a on one end side, and a peripheral groove 9 b on the other end side so as to be locked to the E ring 14 .

Then, a hollow slider 8 that is slidable in the vertical direction and has a planar rectangular shape is accommodated in the slider housing portion 5a provided in the attachment portion 5 . The outer surface of the slider 8 is provided with a passive cam portion 8a abutting against the actuating cam portion 7c, and an elastic member composed of a compressed coil spring is elastically provided between the inner bottom 5h of the installation box 5 and the inner top of the slider 8. 13. The form or quantity of the elastic member 13 is one in this embodiment, but because of the different torque required by the hinge 10, two or three may be required, and compression coil springs of different diameters can be overlapped and used. In addition, dampers can also be installed in the compression coil springs if required.

Therefore, as shown in FIGS. 3 and 4 , in the state where the original pressing plate 3 is closed, the original pressing plate 3 covers the upper surface of the original loading table 2 b, and the operating cam portion 7 c of the supporting member 7 presses the slider 8 . At this time, although the elastic member 13 is in the maximum compression state, the weight of the original pressing plate 3 generates a rotating torque around the hinge shaft 6, and the weight of the original pressing plate 3 wins, so the original pressing plate 3 The closed state can be maintained against the elastic force of the elastic member 13 . Moreover, the partition part is accommodated in the partition storage part.

When the operator wants to perform photocopying, he needs to set the original A on the original loading platform 2b. When he opens the original pressing plate 3 and loads the original A on the original loading platform 2b, it is often affected by the type and shape of the original A. Even if the end of the original A reaches the side of the hinge 10 as shown in FIGS. Therefore, the original document A can almost completely prevent the original document A from getting dirty due to contact with the lubricating oil applied to these positions.

Also, even if the original document A placed on the original document stage 2b does not contact the hinge 10 side when placed, it may deviate when the original document pressing plate 3 is closed and pressed down, and its end may contact the hinge 10 side. At this time, the partition portion 11 also prevents the end of the document A from contacting the active cam portion 7c, the driven cam portion 8a or the side of the slider 8, and thus prevents the document A from being soiled by lubricating oil.

Next, in the present invention, the baffle part 11 is extended toward the left and right directions and has a flat plate shape. As mentioned above, it can be designed as a curved shape arbitrarily, or a single or plural number of longitudinal slits are provided on the baffle part, all including Within the patent application scope of the present invention. The above-mentioned content is also applicable to the description of the partition housing part 7d.

Then, the hinge of the present invention is like other known hinges, when opening the original pressing plate 3, it can be opened without feeling the weight of the original pressing plate 3 itself by the elastic force of the elastic member 13; When the plywood 3 is at the middle opening and closing angle, the elastic force of the elastic member 13 and the weight of the original pressing plate 3 will reach a balance, so that the original pressing plate 3 can stop at the middle opening and closing angle and remain stationary. Furthermore, the opening angle of the original pressing plate 3 is determined by the rear end of the connecting portion 7a of the supporting member 7 abutting against the stopper portion 5e provided on the flange portion 5b of the mounting box 5 as shown in FIGS. 2 and 3 . limit. In this embodiment, the maximum opening angle of the document pressing plate 3 is 65°, but the opening angle of the present invention is not limited thereto.

To sum up, the hinge of the present invention has the above-mentioned structure, and is suitable for opening and closing the original press plate used in smaller models of photocopiers; in addition, the hinge of the present invention is small in size, simple in structure, and easy to operate. Preferably, even if it is contacted by the originals placed on the original loading table, the originals can be prevented from directly contacting the active cam part of the support member, the passive cam part provided on the slider, or even the partition part provided on the installation box. The sliding part, thereby preventing the original document from being soiled by the lubricating oil applied to the actuating cam part, the passive cam part, or the sliding part of the supporting part. Simultaneously, the hinge of the present invention is also applicable to business machines using similar hinges.

1: Business machine (photocopier) 2: Device body 2a: Mounting hole 2b: Original loading table 3: Original pressing board (cover body) 4: Mounting screws 5: Installation box 5a: Slider storage part 5b: flange part 5c: shaft support hole 5d: side panel 5e: stopper 5f: reinforcement bar 5g: Internal thread part for installation 5h: inner bottom 6: Hinge shaft 7: Support piece 7a: Connecting part 7b: Support plate part 7c: Actuating cam part 7d: Partition storage part 7e: Connection hole 7f: Mounting hole 8: Slider 8a: passive cam part 8b: inner top 8c: Elastic part storage part 9: Hinge shaft 9a: flange part 9b: Peripheral groove 10: hinge 11: partition part 13: Elastic part (compression coil spring) 14:E ring A: Original

Fig. 1 is an explanatory diagram of a photocopier in which the hinge of the present invention is installed in one example of business machines. Fig. 2 is a hinge of the present invention installed in a photocopier which is one example of business machines and an enlarged explanatory view viewed from other angles. Fig. 3 is a longitudinal sectional view showing the hinge of the present invention in use. Fig. 4 is also a longitudinal sectional view showing the hinge of the present invention in use. Fig. 5 is a schematic view of the hinge of the present invention, wherein (a) is an oblique view of the support member in a closed state; (b) is an oblique view of the support member in an open state. Figure 6 is a schematic diagram of the hinge of the present invention, wherein (a) is a side view of the original pressing plate in a closed state; (b) is a side view of the original pressing plate opened to the middle opening angle; (c) is the original pressing plate Side view opened to maximum angle state. Fig. 7 is an exploded oblique view of the hinge of the present invention. Fig. 8 is a schematic diagram of the installation box of the hinge of the present invention, wherein (a) is its front view; (b) is a cross-sectional view along line A-A in (a). Fig. 9 is a bottom view of the support of the hinge of the present invention. Fig. 10 is the bottom view of the slider of the hinge of the present invention.

5: Installation box

5b: flange part

5d: side panel

6: Hinge shaft

7: Support piece

7a: Connecting part

7b: Support plate part

7c: Actuating cam part

7d: Partition storage part

7f: Mounting hole

8: Slider

8a: passive cam part

10: hinge

11: partition part

Claims (6)

A hinge comprising: An installation box, which is installed on the side of the device body of an office machine, and has a slider receiving part with an open end inside; A supporting member, which supports an original pressing plate, is assembled to a pair of side plate portions of the installation box on the open end side through a hinge shaft to be rotated, and has an actuation on the side facing the slider receiving portion cam part; a slider, which is accommodated in the slider housing portion so as to slide, and has a driven cam portion on a side adjoining the actuating cam portion; and an elastic part, which is elastically arranged between the sliding part and the inner bottom of the sliding part receiving part; Wherein, the side of the installation box is provided with a partition part on the side facing the actuating cam part, the driven cam part and the sliding part. According to the hinge described in claim 1, the supporting member is provided with a partition housing part for storing the partition part. As for the hinge described in claim 1, the partition part is flat or curved, and a single or plural number of slits are provided on the flat or curved partition. As for the hinge described in Claim 2, the partition receiving portion is in the shape of a groove or a hole, or a groove-shaped receiving portion further cut on the front or left and right sides. As for the hinge described in Claim 1, the elastic member is a compressed coil spring, and a damper device is housed inside it, and the damper device starts to act from a specific closing angle of the original pressing plate. A business machine using the hinge according to any one of claims 1 to 5.

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