KR100260951B1 - Upper housing structure of paper supplying device for copier - Google Patents

Abstract

PURPOSE: An upper housing structure of a paper supplying device for a copier is provided to simplify an upper housing structure by enabling the first and the second rotation roller equipped in the upper housing structure to stick to a rotation roller equipped in a lower housing structure by a torsion bar. CONSTITUTION: A plurality of insertion holes(114,114a) are diagonally formed so that a torsion bar(100) can adjusts a pinch pressure of a torsion bar(100) which pushes axes of rotation(50,52). One end of the torsion bar(100) inserted into the insertion holes(114,114a) of bending plates(110,112) is fixed to the insertion holes(114,114a) of the bending plates(110,112). One end of the torsion bar(100) is fixed to a support bracket(42). The other end is supported by pushing one side of the axes(50,52). A support plate(104) is equipped in the other end of the torsion bar(100).

Description

Upper housing structure of paper feeder for copier

The present invention relates to an upper housing structure of a paper feeder for a copier, and more particularly, to a rotary roller of a rotating shaft provided in an upper housing of a paper feeder for a copier. By providing a torsion bar that presses in close contact with the rotating roller, the number of parts is reduced to simplify the structure of the upper housing, thereby reducing the production cost, and making it easy to assemble and dismantle. An upper housing structure of a paper feeder.

In general, the copier has an original glass 4 on which an original is placed on the inner upper surface of the copier 2, as shown in FIG. 1, and a bottom surface spaced apart from the original glass 4 by a predetermined distance. The counter reflector 6 is inclined at a predetermined angle, and on one side of the counter reflector 6, a carriage 10 is installed to open the light source lamp 8 in one direction.

In addition, the first to fifth mirrors 14, 16, 18, 20, and 22 are disposed to face each other under the carriage 10 so as to sequentially reflect the light source 12, and the second to third mirrors. The lens 24 is provided between the 16 and 18, and a pair of developing part 26, the fixing part 28, and the drum 30 are provided in the site | part which opposes this 5th mirror 22, have.

In addition, a plurality of paper cassettes 34 are inserted and installed in the lower part of the copier 2 spaced apart from the drum 30 so as to be classified and stored according to the size of the copy paper 32. The paper cassette 34 A plurality of pairs of rotary rollers 36 are installed and fixed at one side of the sheet to move the paper 32 toward the drum 30.

And, Figure 2 is an enlarged view of the "A" portion of Figure 1 showing the paper feeder, for initially moving the paper 32 stacked on the paper cassette 34 to the paper feeder 40 A sensor 80 is installed between the rotary rollers 36, and the paper feeder 40 has an upper and lower housings spaced apart from each other vertically to accurately guide the paper 32 toward the drum 30. 46 and 48 are provided, and the lower housing 48 is formed to be concave in the center portion.

In addition, a pair of the first rotary roller 50a and the rotary roller 74, the second rotary roller 52a and the rotary roller 76 are in close contact with each other on both sides of the upper and lower housings 46 and 48. Is installed, and the inner and outer parts of the lower housing 48 and the rotary rollers 74 and 76 are respectively provided with the opening and closing member 84 and the sensor 82 in the spaced apart state, the sensor 82 Is connected to the solenoid 88 mounted on the bottom of the opening and closing member 84 via the rod 86 and the first rotary roller 50a of the upper housing 46 to transmit and block the rotational force It is configured to interconnect with the electronic clutch 78.

The first and second rotation rollers 50a and 52a of the upper housing 46 are provided on the first rotation shaft 50 and the second rotation shaft 52, respectively, and rotated by the rotation shafts 50 and 52. The first rotary roller 50a and the second rotary roller 52a are in close contact with the rotary rollers 74 and 76 of the lower housing 48, respectively.

3 and 4, one side of the second rotation shaft 52 is rotatably hinged to the fixing bracket 54 fixed to the inside of the support bracket 42. The pinch (Pinch) pressure that is continuously pressed by the support plate 58 of the) is applied, because the second rotary roller 52a is due to the continuous surface contact with the rotary roller 76 of the lower housing 48 This spring 70 is connected to the other end of the spring 70, one end of which is connected to the mounting portion 44 of the support bracket 42, to the extension plate 60 rearwardly extended to the support bracket 56 in order to prevent lifting. The extension plate 60 of the support bracket 56 is moved upwards by the compressive force of the support bracket 56, and the tip of the support bracket 56, that is, the tip portion of the support plate 58 detachably provided downwards. Is moved so that the support plate 58 presses the second rotary shaft 52, Rollers (52a) are in close contact face as lifting is prevented in the rotation roller 76 of the lower housing 48 is to maintain the condition.

In addition, both ends of the first rotation shaft 50 is inserted into the insertion hole 68 of the tip of the support bracket 64, which is rotatably hinged to the fixing bracket 62, and the first rotation shaft 50 is fastened. Spring 70 is connected to the mounting portion 44 of the support bracket 42 to the extension plate 66 of the support bracket 64 rotatably hinged to the fixed bracket 62 fixed to the inside of the support bracket 42 By connecting one end, the extension plate 66 of the support bracket 64 is moved upward by the elastic force of the spring 70, and the other end of the support bracket 64, that is, the first rotation shaft 50 is inserted. Since the insertion hole 68 is moved downward and the pinch pressure for pressing the first rotation shaft 50 acts, the first rotation roller 50a is prevented from being lifted by the rotation roller 74 of the lower housing 48. The surface is in close contact with the state.

Here, reference numeral 72 in the drawings shows a bearing.

The paper feeder of the conventional copier made as described above, first, when the user wants to copy the original, as shown in Figure 1 attached to the original, the document is placed on the upper surface of the platen 4, and then the copy button (shown) Omit), the light source lamp 8 emits light at the same time.

The light source 12 emitted from the light source lamp 8 illuminates an original placed on the document glass 4, and the light source 12 projected on the document is reflected downward of the document glass 4. After the axial magnification is processed by the lens 24 provided therebetween while passing through the first to fifth mirrors 14, 16, 18, 20, and 22, the image is irradiated onto the drum 30.

On the other hand, while the above state is achieved and the paper 32 laminated on the paper cassette 34 of the copier 2 passes through the sensor 80 installed on one side, the sensor 80 is connected to the paper 32. The initial movement and the jam of the paper 32 are sensed, and the paper 32 is moved in the direction of the paper feeder 40 according to the rotation of the rotary roller 36 installed thereafter.

Then, the paper 32 moved as described above is attached to the first drawing as shown in Figure 2, the first rotary roller 50a and the lower portion of the upper housing 46 installed at the inlet of the paper feed device 40 It is inserted inwardly by the rotation of the rotation roller 74 of the housing 48, and the front end of the inserted sheet 32 is slid along the space of the upper and lower housings 46 and 48 for continuous movement. It is done.

In addition, the front end of the paper 32 continuously moving and moving in the above state passes through the sensor 82 which is spaced apart from the second rotation roller 52a and installed to the outside. By operating the solenoid 88 installed thereafter, the opening / closing member 84 interlocked therewith is moved upward, so that the front end of the paper 32 that is eventually moved is in close contact with the opening / closing member 84, In addition, as the first rotation roller 50a continuously rotates, the paper 32 forms a curved loop and simultaneously forms an elastic force to be restored to a horizontal state.

In addition, in the above state, the drive motor or the electromagnetic clutch 78 connected to transmit and block the rotational force to the first rotation roller (50a) is operated, the rotation of the first rotation roller (50a) for a predetermined time In the stopped state, the entire loop amount of the paper 32 is formed.

Then, the loop amount of the paper 32 is determined in a state where the paper 32 is completely stopped for a predetermined time, and the opening and closing member 84 is opened downward by reactivation of the solenoid 88, and at the same time, The paper 32 is restored to a horizontal state due to the elastic force of the formed loop. The front end of the paper 32 is press-fitted and adhered between the second rotating rollers 52a to press the paper 32 into the drum 30. Will be moved to the side.

However, in the paper feeder of the conventional copier made as described above, the first and second rotary rollers 50a and 52a of the upper housing 46 are rotated rollers of the lower housing 48 to stably transport the paper 32. 74 and 76, respectively, the surface is in close contact with each other, and the support brackets rotatably hinged to one side of the first and second rotation rollers 50a and 52a to the fixing brackets 54 and 62 so as to maintain the surface contact. The first and second rotary rollers 50a and 52a are connected to the lower housing 48 by the pinch pressure that is pressed by using the tip of the 56 and 64 and the elastic force of the support plate 58 and the spring 70. The surface rollers are kept in close contact with the rotary rollers 74 and 76, which are in close contact with the rotation rollers 74 and 76 of the lower housing 48. Many parts such as fixing brackets (54, 62), support brackets (56, 64), support plate (58), spring (70) in order to maintain the Mounted on the load housing 46, the structure of the upper housing 46 is complicated, thereby increasing the production cost, there is a problem that the workability is reduced due to the complicated assembly and disassembly work.

The present invention has been made to solve the problems of the prior art as described above, the first and second rotary rollers provided in the upper housing is in close contact with the rotary roller provided in the lower housing by the torsion bar, and maintain the state The number of parts can be reduced, thereby simplifying the structure of the upper housing, thereby reducing the production cost, and providing the upper housing structure of the paper feeder for the photocopier, which improves workability by facilitating assembly and disassembly. There is a purpose.

The technical configuration of the present invention for achieving the above object is a flange of the support bracket of the paper feeder for the copier, the first rotation roller is in close contact with the rotation roller of the lower housing, the both ends of the first rotation shaft rotatably Is protruded. Is formed, one side of the support bracket is given a predetermined elasticity, a plurality of torsion bar is formed to face the approximately "c" shape is provided opposite, one end of the torsion bar is fixed to the support bracket , The other end is provided with a support plate for pressing and supporting one side of the rotary shaft to press the rotary shaft by the elasticity of the torsion bar.

In addition, the bending plate of the support bracket is characterized in that a plurality of through-holes are arranged in a diagonal direction to adjust the pinch pressure of the torsion bar by variably adjusting the position of the torsion bar.

1 schematically shows the interior of a typical copier

FIG. 2 is an enlarged view illustrating main parts of the portion “A” of FIG. 1; FIG.

3 is a plan view of the plane of FIG. 2 according to the prior art;

Figure 4 is an exploded perspective view showing the upper housing of the paper feeder for conventional copiers

5 is an exploded perspective view showing the upper housing of the paper feeder for the copier according to the present invention.

6 is a plan view of FIG.

7 is a side view of FIG. 6

Explanation of symbols on the main parts of the drawings

2: copier 4: platen glass

6: Opposing reflector 8: Light source lamp

10: carriage 12: light source

14: first mirror 16: second mirror

18: third mirror 20: fourth mirror

22: fifth mirror 24: lens

26: developing part 28: fixing unit

30: drum 32: copy paper

34: paper cassette 36: rotary roller

40: paper feed unit 42: support bracket

44: mounting portion 46: upper housing

48: lower housing 50: first rotating shaft

50a: first rotating roller 52: second rotating shaft

52a: 2nd rotating roller 54,62: fixed bracket

56, 64: support bracket 58: support plate

60, 66: extension 68: insertion hole

70: spring 72: bearing

74, 76: rotary roller 78: electromagnetic clutch

80, 82: sensor 84: opening and closing member

86: load 88: solenoid

100: torsion bar 102: fastening portion

104: support plate 110, 112: bending plate

114, 114a: insertion hole 116: flange

118: insertion hole

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The same parts as in Fig. 1, Fig. 2, Fig. 3, and Fig. 4 are denoted by the same reference numerals, and repeated description thereof will be omitted.

As shown in FIG. 5, one end of the support bracket 42 is provided at a position corresponding to the rotation roller 74 of the lower housing 48 so that the first rotation roller 50a is in close contact with the surface of the support bracket 42. In addition, the flange 116 to which both ends of the first rotation shaft 50 provided with the first rotation roller 50a are rotatably inserted is protruded.

The front end of the flange 116 is bent vertically downward from the flange 116 through the insertion hole 118 through which both ends of the first rotation shaft 50 is inserted.

6 and 7, one side of the support bracket 42 is provided with a predetermined elasticity, and a plurality of torsion bars 100 having a substantially “c” shape are formed. It is provided opposite.

At one end of the torsion bar 100, a fastening portion 102 bent vertically is formed, and a support bracket 42 is formed at an upper end of the support bracket 42 to which the fastening portion 102 of the torsion bar 100 is fixed. A plurality of bending plates 110 and 112 bent perpendicularly to are formed.

As illustrated in FIG. 5, the bent plates 110 and 112 may adjust the position of the torsion bar 100 so that the torsion bar 100 presses the rotation shafts 50 and 52. A plurality of penetrating holes 114 and 114a are formed to be arranged in a diagonal direction to adjust the pressure.

One end of the torsion bar 100 inserted into the insertion holes 114 and 114a of the bending plates 110 and 112 is fixed to the insertion holes 114 and 114a of the bending plates 110 and 112 through a predetermined fixing means.

In addition, one end of the torsion bar 100 is fixed to the support bracket 42, the other end is supported by pressing one side of the rotation shaft (50, 52), the other end of the torsion bar 100, plate-shaped support plate 104 Is provided.

The upper housing structure of the paper feeder for the copier according to the present invention configured as described above has a first rotary shaft 50 and a second rotary shaft 52 each provided with a first rotary roller 50a and a second rotary roller 52a. Silver ends of the support bracket 42 and the upper housing 46 is rotatably connected to both ends, the first rotation shaft 50 has both ends formed through the flange 116 of the support bracket 42 Inserted into the insertion hole 118 is rotatably mounted.

In addition, the first and second rotations of the upper housing 46 are provided in the plurality of insertion holes 114 and 114a, which are diagonally provided in the bending plates 110 and 112 bent downwardly perpendicular to the upper surface of the support bracket 42. The insertion holes 114 and 114a of the bending plates 110 and 112 appropriately according to the pinch pressure that the rollers 50a and 52a are brought into close contact with the rotary rollers 74 and 76 of the lower housing 48 when the copier 2 is assembled. Insert one end of the torsion bar 100 is fixed through a predetermined fixing means.

The support bracket 42 is mounted on the upper housing 46 rotatably provided with the second rotation shaft 52, and the support plate 104 is provided on the torsion bar 100 of the support bracket 42. It mounts so that it may be located in the upper end of this 1st rotation shaft 50 and the 2nd rotation shaft 52. FIG.

Subsequently, when the upper housing 46 having the support bracket 42 on which the torsion bar 100 is fixed is assembled to the lower housing 48 as described above, the first and second parts of the upper housing 46 are provided. The first and second rotary rollers 50a and 52a are pushed upward by a predetermined amount while the rotary rollers 50a and 52a abut against the rotary rollers 74 and 76 of the lower housing 48.

The first and second rotary rollers 50a and 52a also push the first and second rotary shafts 52 by a predetermined amount in the upward direction, but press and support the rotary shafts 50 and 52. The torsion bar 100 was bent as much as the push of the rotation shaft (50, 52) bar, the torsion bar 100 is to press the rotation shaft (50, 52) to the support plate 104 by the elasticity that is applied to itself Therefore, the first and second rotary rollers 50a and 52a provided on the first and second rotary shafts 52 are in close contact with the rotary rollers 74 and 76 of the lower housing 48 to stabilize the paper 32. Will be transferred to.

In addition, in the paper feeder for the copier according to the present invention, the lower end of the developing portion 26 of the copier 2 is pressed against the upper end of the support bracket 42, and the torsion bar 100 fixed to the support bracket 42 is provided. The force is transmitted as it is, the support plate 104 provided at one end of the torsion bar 100 by pressing one side of the rotation shaft (50, 52) the first and second rotation rollers (50a, 52a) of the upper housing 46 Is closely adhered to the rotary rollers 74 and 76 of the lower housing 48 so that the paper 32 is stably transported, which is equally applicable to the paper feeder 40 of the related art. The transmission path of the force is conventionally transmitted from the support bracket 42 to the fixed brackets 54 and 62, the spring 70, the support brackets 56 and 64, and the rotation shafts 50 and 52 so that the force is dispersed. In the present invention, the transmission path is shortened from the support bracket 42 to the torsion bar 100 and the rotation shafts 50 and 52, thereby further preventing the dispersion of the force and further adding the paper 32. It is reliably transferred to.

As described above, the upper housing structure of the paper feeder for the copier of the present invention reduces the parts of the upper housing of the paper feeder for conveying paper, thereby simplifying the structure of the upper housing and reducing the production cost. When assembling and disassembling, the work is easily made to improve workability.

Claims (2)

In order to guide the paper 32 toward the drum 30, the upper housing 46 and the lower housing 48 are provided to be spaced apart from each other, and both ends of the upper housing 46 are provided with rotating shafts 50 and 52. A first rotary roller (50a) and a second rotary roller (52a) is rotated by a), the first and second rotary rollers (50a, 52a) are provided at both ends of the lower housing 48 Fixing brackets 54 and 64 having support brackets 56 and 64 fixed to the inside of the support bracket 42 by pressing and supporting the first and second rotary shafts 52 so as to remain in close contact with the rollers 74 and 76. 62 is rotatably provided, and the springs 70 are connected to the extension plates 60 and 66 of the support brackets 56 and 64 so that the support brackets 56 and 64 are supported by the elastic force of the springs 70 and 64. In the paper feeder for the copier, which is to be rotated, One end of the support bracket 42 has a first rotation roller 50a is in close contact with the rotation roller 74 of the lower housing 48, the flange 116 is rotatably connected to both ends of the first rotation shaft (50) ) Is protruded. The one side of the support bracket 42 is given a predetermined elasticity, a plurality of torsion bar 100 made of a substantially "C" shape is provided facing, the torsion bar One end of the 100 is fixed to the bent plate (110, 112) of the support bracket 42, the other end of the paper for the copier, characterized in that the support plate 104 is provided to press and support one side of the rotation shaft (50, 52) Upper housing structure of the feeder. The method of claim 1, A plurality of insertion holes 114 and 114a penetrated diagonally in the bending plates 110 and 112 of the support bracket 42 to adjust the pinch pressure of the torsion bar 100 by variably adjusting the position of the torsion bar 100. The upper housing structure of the paper feeder for the copier, characterized in that formed as listed.