TW202001113A - Hinge and machines using the same - Google Patents

Abstract

A hinge includes a mounting member, a support member and a hinge shaft. The mounting member is mounted to the side of an apparatus body. The support member is mounted to the side of an opening/closing body. The hinge shaft rotatably supports the support member with respect to the mounting member. The support member has a pressing cam portion, and the mounting member has a case portion. A first slide member, a first elastic member and a fluid damper means are disposed in the case portion. The first slide member has a first pressure receiving cam portion in contact with the pressure cam portion. The first elastic member pushes the first slide member toward the support member. The fluid damper means has a piston rod integrally extending from the inside to the side of a damper body to the support member side. The first pressure receiving cam portion is formed with a guide hole extending in the sliding direction of the first slide member. A second slide member is slidably urged upward by a second elastic member in the guide hole and is mounted to the piston rod.

Description

Hinge and various machines using the hinge

The present invention relates to a machine which is preferably used to connect the opening and closing body of a manuscript plywood and the like to a business machine including a photocopier, a compound machine, a scanner, a facsimile machine, a printing machine, etc., or a furniture, etc. Hinge of the device body of various machines, etc.

Office equipment such as photocopiers are provided with a contact glass for reading manuscripts on the upper surface of the device body, and the manuscript pressing plate (opening body) is installed through a hinge so that it can be opened and closed in the up and down direction relative to the contact glass.

Previously, as such a hinge, the one described in Japanese Patent Laid-Open No. 2015-183840 is known. The hinge described in Japanese Patent Laid-Open No. 2015-183840 is a hinge that can open and close the original pressure plate to the device body, and its structure includes: a mounting member mounted on the device body side; The supporting member is installed on the side of the original pressing plate and has a pressing cam portion facing the mounting member side; a hinge shaft pivotally supports the supporting member with respect to the mounting member; and a first sliding member having a bearing against pressing The first pressed cam portion of the cam portion is provided to be movable toward the pressing cam portion; an elastic member is provided between the mounting member and the first sliding member; a fluid damping device is provided between the mounting member and the first sliding member It can buffer the rapid rotation of the supporting member in the direction of the cover of the original pressure plate; and a second sliding member connected to the piston rod of the fluid damping device and accommodated in the first slide in a slidable manner The guide hole of the member, when the supporting member rotates in the direction of the lid close, abuts against the pressing cam portion faster than the piston rod.

In the hinge described in Japanese Patent Laid-Open No. 2015-183840 mentioned above, when the supporting member rotates in the direction of the lid of the original pressure plate, the second sliding member abuts against the support faster than the piston rod of the prior art The pressing cam portion of the member has the effect of smoothing the rotation in the direction of the lid of the supporting member more smoothly. However, when the pressing cam portion collides with the second sliding member, it will inevitably produce a rapid braking effect. There is room for further improvement in the operation feel when the lid closing operation of the original pressure plate of the supporting member is performed.

The present invention is to further improve the above-mentioned problems of the prior art. The purpose of the present invention is to provide an opening and closing body for closing a manuscript pressing plate or the like. Even if the opening and closing body falls violently toward the device body, the fluid damping device will not act rapidly. Moreover, a hinge that can give full play to the smooth cushioning effect of the fluid damping device and various machines using the hinge.

In order to achieve the above object, the present invention is a hinge that connects the opening body to the device body in an openable manner. Its structure includes: A mounting member having a housing portion mounted longitudinally to the upper end of the rear of the device body; A supporting member is installed on the side of the opening and closing body, and at the same time, is rotatably installed on both sides of the mounting member through the hinge shaft; A first sliding member, which is arranged in the mounting member so as to be able to slide up and down, and has a first pressure cam portion on the top; A pressing cam portion provided on the lower side of the support member to contact the first pressed cam portion of the first sliding member; A first elastic member is formed by a coil spring provided between the first sliding member and the bottom side of the mounting member for allowing the first sliding member to be slidably pushed upward; A fluid damping device is provided in the first elastic member for easing the lowering action of the first sliding member; A second sliding member is slidably mounted on the front end side of the piston rod of the fluid damping device, and at the same time, its front end side is pressed against the pressing cam portion through the guide hole provided in the first sliding member; and A second elastic member is elastically arranged to push the second sliding member upward in a slidable manner.

Secondly, the present invention is characterized in that when the mounting member is made of synthetic resin, a metal reinforcing frame is provided inside to accommodate the first sliding member and the first elastic member and be connected to the hinge shaft.

Secondly, the present invention is characterized in that the second sliding member penetrates the guide hole provided in the first sliding member, and the horizontal cross section is oval or polygonal, and has a second pressure cam portion on the upper side, which faces from the lower side On the upper side and toward the axis of the axial center, there is a second spring accommodating hole for accommodating the second elastic member, and at its entrance there is a clamping portion that is clamped to the piston rod.

Secondly, the present invention is characterized by the time when the second pressure cam portion of the second sliding member abuts the pressing cam portion of the support member, and the fluid damper starts to be selected after starting to close the original pressure plate Before action.

Secondly, the present invention is characterized in that the second sliding member accommodates the piston rod in the second spring accommodating hole provided in the axial direction of the axial center portion, and while winding the piston rod, the piston rod A second elastic member is elastically arranged between.

Secondly, the feature of the present invention is that the second sliding member is locked to the first sliding member so that it does not come out of the first sliding member from above.

Secondly, the present invention is characterized in that a plurality of first elastic members are provided in the mounting member, and the fluid damping device is provided in at least one of them.

Also, the present invention is a machine that uses the hinge described in any one of the above.

According to the present invention, when the lid is opened and closed, the second sliding member that has been in contact with the pressing cam portion of the support member and slides upwards, when the fluid damping device is first introduced, it is better than using only the conventional fluid damping The device has better effect, that is, the buffering action is performed when the cover is completely closed, and the cover can be smoothly closed.

In the present invention, since the mounting member is strengthened by the reinforcement frame, even if a synthetic resin molded product is used for the mounting member, the opening member can be prevented from being destroyed by the first elastic member during the opening and closing operation of the opening body.

In the present invention, the second sliding member can be prevented from rotating when sliding, and the second sliding member can also be prevented from falling off from the piston rod.

In the present invention, by the time when the second pressure cam portion of the second sliding member abuts against the pressing cam portion of the support member, the fluid damper is selected to start functioning after closing the original pressure plate Before, you can solve the problem of installation space.

In the present invention, the second sliding member is slidably pushed upward by the second elastic member.

In the present invention, the second sliding member is locked to the first sliding member so that it does not come out of the first sliding member from above.

In the present invention, when there are a plurality of first elastic members, if a fluid damping device is provided on one of the first elastic members, the rapid opening and closing of the opening and closing body can be prevented, and the cost of the hinge can also be reduced.

The various machines of the present invention can fully exert the smooth cushioning effect of the fluid damping device even if the opening and closing body falls violently toward the device body.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, although the hinge of the present invention is applied to the opening and closing method to connect the opening and closing body, which is an example of a manuscript pressing plate, to an apparatus body of a photocopier, which is an example of various machines, for example, this embodiment The hinge of the invention can of course also be applied to a device body in which the cover or the opening body having the same purpose as the present invention can be opened and closed to the above-mentioned various machines other than the photocopier. Therefore, when used for a cover or open body other than the original plywood, this should be regarded as a cover or open body.

As shown in FIG. 1, a photocopying machine 1 as various machine examples includes: a device body 2; an original pressing plate 3 as an example of opening and closing; and a pair of left and right hinges 10L, 10R, etc., the original pressing plate 3 It is connected to the device body 2 by hinges 10L and 10R and can be opened and closed. A contact glass 4 is provided on the upper surface of the device body 2. An automatic document feeder 5 is provided on the document pressing plate 3. Since the automatic document feeder 5 is provided on the left portion of the document pressing plate 3, the load applied to the left hinge 10L is greater than the right hinge 10R. Therefore, the left hinge 10L uses a larger hinge than the right hinge 10R. The right hinge 10R of the embodiment does not have the fluid damping device 80 described later, and uses a single elastic member or torsion spring. Therefore, only the structure of the left hinge 10L will be described below. Of course, the fluid damping device 80 of this embodiment can be used for the right hinge 10R.

As shown in FIGS. 2(A) and (B), the hinge 10L includes: a mounting member 20, which is vertically mounted on the upper rear end of the device body 2; a supporting member 30, which is mounted on the side of the original pressing plate 3; and a hinge The shaft 40 pivotally supports the support member 30 relative to the mounting member 20.

As shown in FIGS. 3 and 4, the hinge 10L is assembled using a plurality of members. In the housing portion 21 of the mounting member 20, a reinforcement frame 50 that is slightly U-shaped in front view is provided. On the reinforcement frame 50, a fluid damping device 80 and a first elastic member 70 are provided. The support member 30 is hinged The shaft 40 is pivotally supported. The hinge shaft 40 passes through the first bearing hole 28 and the second bearing hole 57 provided in the two side plate portions 27 and 27 of the mounting member 20 and the two connecting portions 54 and 54 of the reinforcing frame 50 respectively.

As shown in FIG. 5, the damper accommodating side portion of the reinforcement frame 50 on the damper accommodating side in the mounting member 20 accommodates a first sliding member 60, a first elastic member 70 and a fluid damping device 80 . As shown in FIG. 6, a portion of the damper non-receiving side of the reinforcing frame 50 on the non-receiving side of the damper in the mounting member 20 contains a first sliding member 60 and a first elastic member 70.

As shown in FIGS. 7(A), (B), and (C), the support member 30 is, for example, a resin molded product having mechanical strength like polyacetal resin, and may also be made by stamping a metal plate. The mounting member 20 of the embodiment is likewise a resin molded product having mechanical strength like polyacetal resin. Although a part of the illustration is omitted on the surface of the support member 30, a plurality of rib structures or grooves are formed on the support member 30 to save resin material and reinforce the structure.

The support member 30 has a body portion 31; and arm portions 32L, 32R protruding left and right from the body portion 31. As shown in FIG. 5, a pressing cam portion 33 facing the mounting member 20 side is formed in the center portion of the body portion 31 in the front-rear direction.

As shown in FIG. 4, a connecting hole 34 is formed near the rear end of the body portion 31 of the support member 30. The connecting hole 34 penetrates the main body portion 31 right and left. Furthermore, a mounting groove 35 and a plurality of (four in this embodiment) mounting holes 36 are formed in the body portion 31 for mounting the first conductive plate 90 shown in FIG. 14. As shown in FIGS. 7(A) and (C), the mounting groove 35 is formed to extend from the right side portion of the front surface 31a of the body portion 31 through the lower surface 31c to the vicinity of the left end of the lower surface 32Ra of the right arm portion 32R.

In the vicinity of the left end of the left arm portion 32L and the right end of the right arm portion 32R, four screw insertion holes 37 for inserting screws (not shown) for fixing the support member 30 to the original pressing plate 3 are formed. The screw insertion holes 37 are provided at the two front and rear positions of the two arm portions 32L and 32R. Among the front and rear screw insertion holes 37 provided in the left arm portion 32L, the front screw insertion hole 37 is opened at a part of the mounting groove 35. Moreover, a pair of cylindrical protrusions 38 for positioning are provided between the lower surfaces 32La and 32Ra of the two arm portions 32L and 32R and between the screw insertion holes 37. In addition, the support member 30 can be made by stamping a metal plate like stainless steel without using a resin molded product. In this case, the present invention can also be implemented.

As shown in FIGS. 4 and 7, a protruding portion 39 protruding further rearward than the pressing cam portion 33 is provided on the upper end rear edge portion of the body portion 31 of the support member 30. As shown in FIG. 19, when the original pressure plate 3 is rotated to the maximum opening angle (85 degrees) relative to the apparatus body 2, the protrusion 39 abuts against the upper end edge portion 23a of the rear plate portion 23 of the mounting member 20 and restricts The opening angle of the original pressure plate 3.

As shown in FIG. 4, the mounting member 20 has a housing portion 21 that opens toward the support member 30 side. As shown in FIGS. 8(A) and (B), the mounting member 20 is a resin molded product formed of hard resin. A plurality of rib structures or grooves are formed on the surface of the mounting member 20 to save resin material and reinforce the structure. As shown in FIGS. 8(A) and (B), the mounting member 20 has a front plate portion 22, a rear plate portion 23, a bottom plate portion 24, a left side plate portion 25L and a right side plate portion 25R, and these surround Whereas the housing portion 21 is formed. A flange portion 26 is provided on the upper periphery of the mounting member 20. As shown in FIGS. 2(A) and (B), the mounting member 20 is fitted to the device body 2 by fitting a lower part of the flange portion 26 into the mounting hole 2 a of the device body 2. In the vicinity of the front end of the portion formed on the right side plate portion 25R of the flange portion 26, a mounting hole 26a for mounting the second conductive plate 100 shown in FIG. 15 is formed to penetrate vertically. In addition, the mounting member 20 may not use a resin molded product, and may be made by stamping a metal plate like stainless steel, or a forged product may be used. The present invention can be implemented in any of these cases.

As shown in FIGS. 8(A) and (B), a pair of left and right side plate portions 27 and 27 protruding upward are formed at the rear of the left side plate portion 25L and the right side plate portion 25R of the mounting member 20. In the vicinity of the upper ends of the side plate portions 27, 27, first bearing holes 28, 28 are formed, respectively. The two first bearing holes 28, 28 are coaxially penetrating the side plate portions 27, 27. A reinforcing frame 50 as shown in FIGS. 9(A) and (B) is embedded inside the mounting member 20. The reinforcing frame 50 is a metal member formed by bending a stainless steel plate, for example.

As shown in FIGS. 9(A) and (B), the reinforcing frame 50 is made of metal such as stainless steel, for example, and is used to reinforce the mounting member 20 made of synthetic resin. This is to prevent the mounting member 20 from being broken by compression and extension of the pair of first elastic members 70, 70 having high elasticity. Furthermore, even if the mounting member 20 is a molded product using synthetic resin, the reinforcement frame 50 may be omitted when the wall thickness is increased to have sufficient strength. The reinforcing frame 50 is slightly U-shaped when viewed from the front, and is formed with a bottom plate portion 51; left and right side plate portions 52L, 52R are bent upward from the left and right ends of the bottom plate portion 51 and erected; edge plate portions 53a, 53a, and 53b , 53b, respectively extending inward in the left-right direction from the front and rear edges of the two side plate portions 52L, 52R; and a pair of left and right connecting portions 54, 54 protruding upward from the rear of the two side plate portions 52L, 52R. In the bottom plate portion 51, a through hole 56 for mounting the fluid damping device 80 is formed. In the vicinity of the upper ends of the two connecting portions 54, second bearing holes 57 are formed, respectively. The two second bearing holes 57 coaxially penetrate the two connecting portions 54.

As shown in FIGS. 4, 5 and 6, the reinforcing frame 50 is fitted into the inner surface of the mounting member 20 and is provided in the housing portion 21. The first bearing holes 28 and 28 of the mounting member 20 and the second bearing holes 57 and 57 of the reinforcing frame 50 are in coaxial communication with each other.

As shown in FIGS. 10(A) and (B), the hinge shaft 40 is made of a metal such as stainless steel and has a cylindrical shaft portion 41 and a head formed at one end portion (right end portion) 41a of the shaft portion 41部42. The hinge shaft 40 is a metal member formed of, for example, stainless steel or the like. The other end (left end) 41b of the shaft 41 is hollow. As shown in FIG. 4, after inserting the shaft 41 through the first bearing holes 28 and 28 and the connecting hole 34 of the mounting member 20 and the support member 30, The other end 41b is riveted.

As shown in FIGS. 4, 5 and 6, the first sliding member 60 is made of synthetic resin, and is housed in the housing portion 21 of the mounting member 20 while being surrounded by the reinforcing frame 50. The first sliding member 60 is guided by the reinforcing frame 50 and slides up and down in the housing portion 21. As shown in FIG. 11(A), a first pressure-receiving cam portion 61 that abuts against the pressing cam portion 33 of the support member 30 is provided on the upper surface of the first sliding member 60. Moreover, a convex portion 60a, 60b is provided on the front and rear sides of the first sliding member 60, and the convex portion 60a, 60b is fitted into the edge plate portions 53a, 53a and 53b, 53b of the reinforcing frame 50, respectively When being guided, the posture when the reinforcement frame 50 slides in the up-down direction is controlled.

As shown in FIGS. 11(A), (B), and (C), a guide hole 62 is formed in a part of the first pressure cam portion 61. The guide hole 62 has a rectangular shape and faces the first sliding member 60. The sliding direction (up and down direction) extends. Inside the first sliding member 60, as shown in FIGS. 11(B) and (C), a pair of left and right cylindrical spring case portions 63L and 63R opening downward are formed. The guide hole 62 penetrates the first pressure receiving cam portion 61 from the spring case portion 63L on the left side, and is open on the surface of the first pressure receiving cam portion 61.

As shown in FIGS. 4, 5, 6 and 11, the first elastic members 70 and 70 are respectively accommodated in the two spring housing parts 63L and 63R. The first elastic members 70 and 70 are steel springs. In the embodiment, the spring housing portion 63L on one of the left and right spring housing portions 63L, 63R (the left side in this embodiment) accommodates one of the first elastic member 70 and the fluid damping device 80 together, the first The elastic member 70 surrounds the fluid damping device 80 and is disposed in the spring case portion 63L. The other first elastic member 70 is housed in the other spring housing portion 63R, and does not house the fluid damping device 80. Of course, the first elastic members 70 and 70 and the fluid damping devices 80 and 80 may be accommodated in the two spring housing parts 63L and 63R.

As shown in FIGS. 5 and 6, the upper ends 70 a and 70 a of the two first elastic members 70 and 70 are in pressure contact with the top surfaces 63 a of the spring housing portions 63L and 63R of the first sliding member 60, respectively. As shown in FIG. 5, the lower end 70 b of the first elastic member 70 provided in the left spring case portion 63L is pressure-contacted with the flange portion 83 of the damper body 81. As shown in FIG. 6, the lower end 70 b of the first elastic member 70 provided in the right spring case portion 63R is pressure-contacted with the upper surface 51 a of the bottom plate portion 51 of the reinforcing frame 50. The first sliding member 60 is elastically supported by the two first elastic members 70 and 70 so as to be movable in the vertical direction. The first sliding member 60 is in a contact state between the first pressure cam portion 61 of the first sliding member 60 and the pressing cam portion 33 of the supporting member 30 as the supporting member 30 rotates relative to the mounting member 20 The change is pushed upward by the two first elastic members 70 and slides in the vertical direction. In this embodiment, when the angle of the original platen 3 with respect to the device body 2 is in the range of 0 degrees to 85 degrees, as the support member 30 rotates relative to the mounting member 20, the pressing cam portion 33 and The contact state between the first pressure-receiving cam portions 61 changes. The "angle" herein means an angle formed by the upper surface of the contact glass 4 of the device body 2 and the lower surface of the original pressing plate 3.

4 and 7, as shown in FIG. 14, the first conductive plate 90 has: an upper plate portion 91 provided to cover the upper surface 31 b of the body portion 31 of the support member 30; and a front plate portion 92 from above The right end of the front edge of the plate portion 91 is bent downward and extends; the lower plate portion 93 is bent rearward from the lower end of the front plate portion 92 and extends to the right; and a right plate portion 94 is formed from the rear end of the right edge of the upper plate portion 91 The part bends downward and extends. The upper plate portion 91 and the lower plate portion 93 are portions that are electrically connected to the conductor member attached to the original pressing plate 3 side of the support member 30. A plurality of (four in this embodiment) through holes 95 are provided in the upper plate portion 91, and the through holes 95 communicate with the mounting holes 36 of the body portion 31, and the edge portion of each through hole 95 is fixed to each Mounting hole 36. The front plate portion 92 and the lower plate portion 93 are fitted into the mounting groove 35 of the body portion 31. Near the right end of the lower plate portion 93, a through hole 96 communicating with the front screw insertion hole 37 of the right arm portion 32R is provided. The lower plate portion 93 is inserted through the screw insertion hole 37 and the screw of the through hole 96 (not shown) ), and is screwed to the original pressure plate 3, and the lower plate portion 93 is fixed to the right arm portion 32R. A through hole 97 communicating with the first bearing hole 28 is provided on the right plate portion 94, and the inner edge of the through hole 97 contacts the outer peripheral surface of the shaft portion 41 of the hinge shaft 40 to allow the first conductive plate 90 and the hinge shaft 40 Mutual electrical conduction.

As shown in FIGS. 2, 4 and 8, the second conductive plate 100 is attached to the right side plate portion 25R of the mounting member 20. As shown in FIG. 15, the second conductive plate 100 has: an upper half 101 provided above the flange 26 of the mounting member 20; a lower half 102 provided below the flange 26; and A stepped portion 103 connects the upper half 101 and the lower half 102. The lower half 102 is a portion that is in contact with and electrically connected to the conductor member of the device body 2. The upper half 101 has a horizontal portion 101a extending forward and backward along the flange portion 26, and a vertical portion 101b extending upward from the rear end of the horizontal portion 101a. At the upper end of the vertical portion 101b, a through hole 104 fitted with the head 42 of the hinge shaft 40 is provided, and the upper end of the vertical portion 101b contacts the head 42 of the hinge shaft 40 to allow the second conductive plate 100 and the hinge shaft 40 are electrically connected to each other.

The hinge 10L configured as described above conducts the device body 2 and the original pressing plate 3 through the first conductive plate 90, the hinge shaft 40, and the second conductive plate 100, thereby ensuring electrical property between the device main body 2 and the original pressing plate 3 Ground connection.

Referring to FIG. 5, as shown in FIG. 12(C), since the fluid damping device 80 is a conventional technology, details of the internal structure are omitted, and it includes: a damper body 81 fixed to the housing of the mounting member 20 The reinforcing frame 50 in the portion 21; and a piston rod 82 extending integrally from the damper body 81 toward the support member 30 side, that is, upward. Near the lower end of the damper body 81, a flange portion 83 is formed. The fluid damping device 80 fits the lower end portion of the damper body 81 to the through hole 56 of the reinforcing frame 50, and locks the flange portion 83 to the upper surface 51a of the bottom plate portion 51 of the reinforcing frame 50. The damping device 80 is fixed to the reinforcing frame 50. In addition, although the fluid damping device 80 is provided in one of the first elastic members 70 and 70 composed of two sets of coil springs in this embodiment, it may be provided in the other.

Especially as shown in FIG. 12(D), on the upper side of the outer periphery of the piston rod 82, four first groove portions 82c, 82c... are provided at equal intervals. Here, the first groove portion 82c, At the lower part of 82c, four second groove portions 82f, 82f are provided. These second groove portions 82f, 82f... are transmitted through the circular groove 82d and the first A groove portion 82c, 82c... is set at an angle offset by 90 degrees. Further, here, the piston rod 82 is provided with the first spring accommodating hole 82a to a predetermined depth from the front end side toward the axial direction of the axial center portion.

In particular, as shown in FIG. 5, the second sliding member 110 is attached to the piston rod 82 so as to be able to slide vertically. This second sliding member 110, especially as shown in FIGS. 13(A) and 13(B), presents a rectangular shape matching the shape of the guide hole 62 of the first sliding member 60, which can slide at a fixed position without being guided The inside of the hole 62 rotates. The second sliding member 110 is provided with a second pressure cam portion 111 on the top, and as shown in FIGS. 13(C), (D), (E) and (F), a A second spring accommodating hole 113 having a circular shape in plan view, at the entrance portion of the second spring accommodating hole 113, a locking portion 113c is provided, which is composed of four convex portions 113a, 113a arranged at equal intervals. . And the concave portions 113b, 113b. Moreover, as shown in FIG. 5 in particular, between the piston rod 82 and the second sliding member 110, a second spring receiving hole 113 is accommodated and the second elastic member of the second sliding member 110 is slidably pushed upward 120, which is wound and elastically arranged on the piston rod 82.

When mounting this second sliding member 110 to the piston rod 82, first, the inlet of the second spring accommodating hole 113 of the second sliding member 110 shown in FIG. 13(E) is abutted to the upper end of the piston rod 82 When the convex portions 113a, 113a... of the locking portion 113c is pressed down to the first groove portion 82c, 82c provided at the upper end portion of the piston rod 82 as shown in FIG. 12(D). ....., when the lower end of the second sliding member 110 is inserted into the upper end of the piston rod 82, after passing through the circular groove 82d provided in the piston rod 82, it collides with the protrusions 82e, 82e... and stops . In this state, the second sliding member 110 is rotated to either the left or the right, so that the convex portions 113a, 113a... and the second groove portions 82f, 82f... are matched. When the second sliding member 110 is pressed downward from this state, since the convex portions 113a, 113a... are guided by the second groove portions 82f, 82f... and slide downward, the second sliding member 110 is attached to the piston rod 82 . In this state, even if the second sliding member 110 is pushed upward by the second elastic member 120 being slidably pushed upward, the second sliding member 110 will not collide with the piston rod 82 with a height difference The convex portions 82b, 82b at the upper end of... Stop and do not immediately protrude upward.

When configured as described above, especially as shown in FIGS. 16 to 19, since when the supporting member 30 rotates with the opening and closing operation of the original pressure plate 3, the second sliding member 110 is always in pressure contact with the pressing cam portion 33, When the manuscript pressing plate 3 performs the lid closing operation, the fluid damping device 80 does not move rapidly from a predetermined lid closing angle, and can allow the manuscript pressing plate 3 to perform a smoother lid closing operation.

Next, the action and effect of the hinge 10L when the document closing plate 3 is opened and closed will be described. The hinge 10L connects the original pressing plate 3 to the device body 2 in an openable and closable manner. The range of the opening and closing angle of the original pressing plate 3 relative to the device body 2 is from the angle of the fully covered closed state (full covered closed state), that is, 0 degrees to the maximum opening angle, that is, 85 degrees. Also, this full opening angle is not limited to the opening angle of this embodiment.

As shown in FIG. 16, when the closing angle of the original pressing plate 3 is 0 degrees, the total elastic force of the first elastic member 70 and the second elastic member 120 is resisted by the weight of the original pressing plate 3 to press against the supporting member The pressing cam portion 33 of 30 presses the first sliding member 60 and the second sliding member 110 downward to compress the first elastic members 70 and 70 and the second elastic member 120 to the maximum. In this closed state, since the weight of the original pressing plate 3 exceeds the total elastic force of the first elastic members 70, 70 and the second elastic member 120, the original pressing plate 3 maintains a stable closed state.

From this state, the front cover side of the original pressing plate 3 is lifted and lifted, and the original pressing plate 3 can be opened gently without feeling by the total elastic force of the first elastic members 70, 70 and the second elastic member 120. To its original weight. As shown in FIGS. 18(A) and (B), when the original pressure plate 3 reaches an opening angle of 60 degrees, due to the weight of the original pressure plate 3 and the total elastic force of the first elastic members 70, 70 and the second elastic member 120 The system is balanced, so even if you let go of the original pressure plate 3, the original pressure plate 3 will not naturally fall and close.

When the original pressure plate 3 is further opened from this intermediate angle, the second pressed cam portion 111 of the second sliding member 110 maintains the contact state with the pressing cam portion 33. This contact state between the pressing cam portion 33 and the second pressure receiving cam portion 111 of the second sliding member 110 continues until the fully opened position of the original pressure plate 3 shown in FIG. 19. That is, this contact state continues as shown in FIG. 19 until the maximum opening angle of the original pressure plate 3 is 85 degrees. At the maximum opening angle of the original pressure plate 3, the original pressure plate 3 is kept in an open state by reducing its rotational torque and the elasticity of the second elastic member 120 acting on the second sliding member 110.

When the original pressing plate 3 is closed from the fully opened state, by the pressing cam portion 33 of the supporting member 30, first, since the second sliding member 110 resists the elastic force of the second elastic member 120 and is pressed downward, the original pressing plate 3 The rebound was weak. Although the original pressure plate 3 is covered and closed, the elastic resistance of the second elastic member 120 gradually increases, but further because the pressing cam portion 33 of the support member 30 is pressed against the first elastic members 70, 70 acting on The first sliding member 60 does not quickly close the original pressure plate 3 due to its cushioning effect. In this way, when the cover closing angle of the original pressing plate 3 reaches 18 degrees, as shown in FIG. 17(A), since the upper end portion of the piston rod 82 contacts the second spring accommodating hole 113 provided in the second sliding member 110 And the fluid damping device 80 starts to function, so even if the rotational torque is increased, the original pressure plate 3 will not be quickly closed due to its own weight. In addition, although the supporting member 30 rotates as the original pressure plate 3 is closed, the first sliding member 60 and the second sliding member 110 are pressed by the pressing cam portion 33 of the supporting member 30 and resist the first elastic member 70, 70 and the elasticity of the second elastic member 120 slide downward, so there is no need to worry that the original pressure plate 3 is quickly closed.

As shown in FIG. 17(A), since the inner top portion 115 of the second spring receiving hole 113 provided in the second sliding member 110 abuts against the piston rod of the fluid damping device 80 at an angle of 18 degrees from the cover closing angle of the original pressing plate 3 The front end of the 82, so the fluid damping device 80 starts to function, even if the inertia of the original pressing plate 3 during the closing operation, or pressing the original pressing plate 3 downward during the closing operation, the original pressing plate 3 will not rush Cover closed.

Here, the second pressure cam portion 111 of the second sliding member 110 is originally set to have an opening angle of about 30 degrees from the original pressure plate 3, and is in contact with the pressing cam portion 33 of the support member 30, so that the fluid damping device The opening angle at which 80 starts to function is set to 18 degrees, which is an embodiment that can be appropriately selected. When constructed in this way, it also has the advantage of having a short hinge in the longitudinal direction or a short maximum compression height of the elastic member.

That is to say, in the present invention, especially when the cover closing operation of the original pressure plate 3 is performed, the fluid damper device 80 does not function from its predetermined cover closing angle as in the prior art, and because the second The second sliding member 110 which functions as the elastic member 120 performs a buffering action in advance when the lid closing operation of the original pressure plate 3 is performed, so the buffering action of the fluid damping device 80 will proceed smoothly.

In addition, the present invention is not limited to the above-mentioned embodiments, but covers various modified embodiments within the scope described in the scope of the patent application. For example, in the above-mentioned embodiments, although the example of applying the hinge of the present invention to the hinge connecting the device body of the photocopier and the original pressing plate is described, of course, the present invention is not only applicable to photocopiers, but also applicable to composite Machine, scanner, fax machine, etc.

Moreover, in the above-mentioned embodiment, although the example of applying the hinge of the present invention to a machine with an intermediate holding angle of 60 degrees of the original pressure plate is explained, of course, the present invention can also be applied to an intermediate holding angle of 60 Machines outside of degrees.

Moreover, in the above-mentioned embodiment, although an example in which two different sizes of hinges are used to connect the device body and the original pressure plate is shown, of course, two same size hinges or more than three hinges may be used to connect the device body and the original pressure Plywood.

The present invention has a structure as described above, so it is preferably used as a hinge that smoothes the movement of an opening body such as a manuscript pressing plate during a lid closing operation even when a fluid damping device is used, and various machines using the hinge .

1‧‧‧Copier 2‧‧‧device body 2a‧‧‧Mounting hole 3‧‧‧ original plywood 4‧‧‧Contact glass 5‧‧‧Automatic manuscript feeder 10L, 10R‧‧‧Hinges 20‧‧‧Installing components 21‧‧‧Housing 22‧‧‧Front Board Department 23‧‧‧Rear board 23a‧‧‧Upper edge 24‧‧‧Bottom board 25L‧‧‧Left plate part 25R‧‧‧Right side plate 26‧‧‧Flange 26a‧‧‧Mounting hole 27‧‧‧Parts on both sides 28‧‧‧First bearing hole 30‧‧‧Supporting member 31‧‧‧Body 31a‧‧‧front 31b‧‧‧Top 31c‧‧‧below 32L, 32R‧‧‧arm 32La, 32Ra ‧‧‧ below 33‧‧‧Press the cam 34‧‧‧Link hole 35‧‧‧Installation ditch 36‧‧‧Mounting hole 37‧‧‧Screw jack 38‧‧‧Bump 39‧‧‧Projection 40‧‧‧Hinge shaft 41‧‧‧Shaft 41a‧‧‧One end 41b‧‧‧The other end 42‧‧‧Head 50‧‧‧Reinforcement framework 51‧‧‧Bottom board 51a‧‧‧Top 52L, 52R‧‧‧side plate 53a, 53b‧‧‧Edge board 54‧‧‧Link 56‧‧‧Through hole 57‧‧‧Second bearing hole 60‧‧‧The first sliding member 60a, 60b ‧‧‧ convex 61‧‧‧The first pressure cam part 62‧‧‧Guide hole 63L, 63R‧‧‧Spring housing 63a‧‧‧Top 70‧‧‧The first elastic member 70a‧‧‧Upper 70b‧‧‧lower 80‧‧‧fluid damping device 81‧‧‧Damper body 82‧‧‧piston rod 82a‧‧‧The first spring receiving hole 82b‧‧‧Convex 82c‧‧‧First groove part 82d‧‧‧Circular groove 82e‧‧‧Protrusion 82f‧‧‧Second groove part 83‧‧‧Flange 90‧‧‧The first conductive plate 91‧‧‧ Upper Board Department 92‧‧‧Front Board Department 93‧‧‧ Lower board 94‧‧‧Right board 95‧‧‧Through hole 96‧‧‧Through hole 97‧‧‧Through hole 100‧‧‧Second conductive plate 101‧‧‧First half 101a‧‧‧Level 101b‧‧‧Vertical 102‧‧‧The second half 103‧‧‧Steps 104‧‧‧Through hole 110‧‧‧Second sliding member 111‧‧‧ Second pressure cam 113‧‧‧Second spring receiving hole 113a‧‧‧Convex 113b‧‧‧recess 113c‧‧‧Clamping Department 115‧‧‧Inner top 120‧‧‧Second elastic member

FIG. 1 is a perspective view showing a photocopier as an example of various machines including hinges according to an embodiment of the present invention. FIG. 2 (A) is an explanatory view showing a closed state of a manuscript pressing plate relative to the opening and closing body of the apparatus body; (B) is an explanatory view showing an open state of the manuscript pressing plate relative to the apparatus body. 3 is a perspective view showing the appearance of a hinge according to an embodiment of the present invention. 4 is an exploded perspective view showing the hinge. 5 is a cross-sectional view taken along line A-A of the hinge shown in FIG. 3. Fig. 6 is a sectional view taken along line B-B of the hinge shown in Fig. 3. 7(A) is a plan view showing the support member; (B) is a side view showing the support member shown in (A); (C) is a bottom view showing the support member shown in (A). 8(A) is a perspective view showing the mounting member; (B) is a perspective view showing the mounting member shown in (A) from another angle. 9(A) is a perspective view showing a reinforcement frame; (B) is a perspective view showing the reinforcement frame shown in (A) from another angle. 10(A) is a perspective view showing the hinge axis; (B) is a perspective view showing the hinge axis shown in (A) from another angle. 11(A) is a perspective view showing the first sliding member; (B) is a C-C cross-sectional view showing the first sliding member; (C) is a bottom view showing the first sliding member. 12(A) is a plan view showing the fluid damping device; (B) is a plan view showing the fluid damping device shown in the cross section of the piston rod; (C) is a front view showing the fluid damping device; (D) is showing A perspective view of a fluid damping device. 13(A) is a perspective view showing the second sliding member; (B) is a perspective view showing the second sliding member shown in (A) from another angle; (C) is a side view from the second sliding member Cross-sectional view viewed; (D) is a cross-sectional view viewed from the front of the second sliding member; (E) is a bottom view showing the second sliding member; (F) is DD showing the second sliding member of (D) Profile view. 14(A) is a perspective view showing the first conductive plate; (B) is a perspective view showing the first conductive plate shown in (A) from another angle. 15 is a perspective view showing a second conductive plate. 16(A) is a cross-sectional view showing the damper accommodating side when the angle of the support member is 0 degrees; (B) is a cross-sectional view showing the non-accommodating side of the damper at this time. FIG. 17(A) is a cross-sectional view showing the damper accommodating side when the angle of the support member is 18 degrees; (B) is a cross-sectional view showing the non-accommodating side of the damper at this time. 18(A) is a cross-sectional view showing the damper accommodating side when the angle of the supporting member is 60 degrees; (B) is a cross-sectional view showing the non-accommodating side of the damper at this time. FIG. 19 (A) is a cross-sectional view showing the damper accommodating side when the angle of the support member is 85 degrees; (B) is a cross-sectional view showing the non-accommodating side of the damper at this time.

10L‧‧‧Hinges

20‧‧‧Installing components

24‧‧‧Bottom board

25L‧‧‧Left plate part

25R‧‧‧Right side plate

26‧‧‧Flange

26a‧‧‧Mounting hole

27‧‧‧Parts on both sides

30‧‧‧Supporting member

31‧‧‧Body

31a‧‧‧front

31b‧‧‧Top

32L, 32R‧‧‧arm

36‧‧‧Mounting hole

40‧‧‧Hinge shaft

90‧‧‧The first conductive plate

92‧‧‧Front Board Department

94‧‧‧Right board

100‧‧‧Second conductive plate

Claims (8)

A hinge, which connects the opening and closing body to the device body in an openable manner, and its structure includes: A mounting member having a housing portion mounted longitudinally to the upper end of the rear of the device body; A supporting member, which is installed on the side of the opening and closing body, and is rotatably installed on both side plate portions of the mounting member through a hinge shaft; A first sliding member provided in the mounting member so as to be able to slide up and down, and having a first pressure cam portion on the top; A pressing cam portion provided on the lower surface side of the support member to contact the first pressed cam portion of the first sliding member; A first elastic member composed of a coil spring provided between the first sliding member and the bottom side of the mounting member for allowing the first sliding member to slide upwardly; A fluid damping device provided in the first elastic member for easing the lowering action of the first sliding member; A second sliding member is slidably mounted on the front end side of the piston rod of the fluid damping device, and at the same time, its front end side is press-contacted with the pressing cam portion through the guide hole provided in the first sliding member; and A second elastic member is elastically arranged to push the second sliding member upward in a slidable manner. The hinge as described in item 1 of the patent application scope, wherein when the mounting member is made of synthetic resin, a metal reinforcing frame is provided in the interior to accommodate the first sliding member and the first elastic member and Connect with hinge shaft. The hinge as described in item 1 of the patent application scope, wherein the second sliding member penetrates the guide hole of the first sliding member, and has a horizontal cross section of an ellipse or a polygon, with a second pressure cam on the upper side The part, from the lower side to the upper side and toward the axis of the axis, has a second spring accommodating hole for accommodating the second elastic member, and has a clamping part fixed to the piston rod at its entrance . The hinge as described in item 1 of the scope of the patent application, wherein the time when the second pressure cam portion of the second sliding member abuts the pressing cam portion of the support member is selected after starting to close the original pressure plate Before the fluid damper starts to function. The hinge as described in item 1 of the patent application scope, wherein the second sliding member accommodates the piston rod in a second spring accommodating hole provided in the axial direction of the axial center portion, and the piston rod is wound on one side, A second elastic member is elastically disposed between the piston rod and the piston rod. The hinge as described in item 1 of the patent application scope, wherein the second sliding member is locked to the first sliding member so that it does not come out of the first sliding member from above. The hinge as described in item 1 of the patent application scope, wherein the first elastic member is provided in plural in the mounting member, and the fluid damping device is provided in at least one of them. A machine that uses the hinge described in any one of patent applications 1 to 7.

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