JPH07320804A - Wiring connection device - Google Patents

Abstract

PURPOSE:To realize the assembling and wiring work of plural parts concurrently in an optional direction by making a vertical part lower end contact with the electrode part of the other part by the elastic deformation of a fixed horizontal part of a wiring connection body composed of the horizontal and vertical parts. CONSTITUTION:A high voltage board 26 in the lower side of a transcription unit base 8 is connected to the sensor rod 42 for detecting toner residual quantity of the development part unit 11 of an image forming device. A wiring connection body 35 composed of a first nearly horizontal part 35a and a first nearly vertical part 35b is fixed to the base 8 via a locking claw 37a at the horizontal part 35a, and the vertical part 35b is extended in the base board 26 upper surface direction to pressedly abut on an electrode part 38 surface in a condition where the horizontal part 35a is elastically deformed. An upward connection terminal part 40 is provided on the second nearly vertical part of the connection body 35 to be connected to the laterally protruded pin 42a of a rod 42. The vertical part 35b can approach to the electrode part 38 from an optional direction, extremely facilitating wiring connection work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring connection device in an electronic device having an image forming apparatus such as a laser printer, a copying machine, a facsimile machine or the like, and other electric components.

[0002]

2. Description of the Related Art Conventionally, in electronic equipment having electrical components and the like, various connector devices have been used as devices for wiring and connecting two component boards. Generally, a connector device is composed of a male part such as a pin and a female part such as a socket, and the socket as the female part is curved in a dogleg shape or has an inverted J shape toward the insertion side of the pin. It is known that a pair of right and left nipping pieces made of metal (made of a spring plate) curved in a letter shape are supported in a cantilever manner.

For example, in a connector device as shown in FIGS. 6 (a) and 6 (b), a plate protruding upward from a first substrate 100 as a lower part provided with an electric circuit (not shown). The first socket 102, which is detachably fitted and engaged with the first pin 101 in the shape of a ring, has a pair of a pair of J-shaped curved and substantially opposed to the lower end of the vertical piece 103a of the spring plate 103. The holding piece 102a is formed by cutting and raising the holding pieces 102a, and the base of the horizontal piece 103b of the spring plate 103 is fixed to the second board 104 as another component by a locking claw 105 or the like.

Further, a second socket formed by cutting and raising a pair of holding pieces 107a, 107a, which are curved in an upside down J shape and are arranged to face each other, are formed at the upper end of the spring plate 103 extending above the second substrate 104. 106 is provided, and the second socket 106 is provided with a third substrate 1 as a third component above the second socket 106.
The second pin 109 extending in the horizontal direction from 08 is inserted and connected.

[0005]

However, according to the connector device described above, the first
The first pin 101 of the board 100 is inserted and attached from almost directly below, while the second pin 109 can also be inserted and attached to the second socket 106 from almost directly above. It is difficult to insert the pin 101 and the second pin 109 into the first socket 102 and the second socket 106 from an oblique direction deviated from the vertical,
There has been a problem that it takes time to connect wiring while incorporating a plurality of parts.

The present invention has been made to solve this technical problem, and provides a wiring connection device capable of carrying out the assembly of a plurality of parts and the wiring work almost at the same time, and the assembly direction can be arbitrarily set. That is the purpose.

[0007]

In order to achieve the above object, a wiring connecting device according to the present invention is a wiring connecting device for electrically connecting at least two components, and one component is Is a wire connection body that is bent in an L-shape or the like in a side view and is fixed at the substantially horizontal portion, the wire connection body including a substantially horizontal portion and a substantially vertical portion, and the substantially vertical portion of the wiring connector is the other component. And a lower end of the substantially vertical portion of the wiring connector is pressed against the surface of the electrode portion in a state where the substantially horizontal portion of the wiring connector is elastically deformed. .

According to a second aspect of the present invention, in the wiring connection device according to the first aspect, a connection terminal portion for a third component is provided in a substantially horizontal portion of the wiring connection body in a direction opposite to the substantially vertical portion. It is provided so as to extend to.

[0009]

EXAMPLES Next, examples embodying the present invention will be described. FIG. 1 is a schematic side sectional view of a laser beam printer 1 as an image forming apparatus, and FIG. 2 is a side view of a process unit and the like. In the printer 1 of this embodiment, a paper feed cassette 3 as a paper feed unit is detachably attached to a lower portion of a main body case 2, and recording sheets stacked in the paper feed cassette 3 by a plurality of paper feed rollers 4 and the like. A sheet P as a medium is separated sheet by sheet, and a transfer unit base 8 including a process unit 7 for image formation via a sheet guide plate 5 and a feed roller pair 6 and a transfer roller 9 as a transfer member. Sent between and.

The process unit 7 includes a photosensitive drum 10
A developing unit 11 including a toner tank and a developing roller 12, a charging device 13 including a charging roller, a cleaning (not shown) device, etc. are housed in a case as a kit to form a single unit. ing. A scanner unit 22 including a laser emitting section 23, a lens 24, a reflecting mirror 25, and the like is arranged above the process unit 7, and below the transfer unit table 8, the charging device 13 and the transfer roller 9 are elevated. A high voltage substrate 26 for applying a voltage is arranged, and a control substrate 27 is arranged below the fixing unit 15.

The surface of the photosensitive drum 10 precharged by the charging device 13 is irradiated with light emitted from the scanner unit 22 according to image data transmitted from an external device such as a host computer (not shown). The electrostatic latent image is formed on the surface of the photoconductor drum 10, and then the developing roller 12 is rotated to supply the charged powdery toner to visualize the latent image. After that, the toner image is transferred onto the paper P supplied between the photosensitive drum 10 and the transfer roller 9. Next, the paper P, which is conveyed by sliding on the paper passage guide member 32 on the front surface side (upper side) of the transfer unit base 8 which will be described later, passes between the heating roller 16 and the pressing roller 17 in the fixing unit 15. Then, heat and pressure are applied to the transferred image to fix the toner image on the paper P. After that, the paper is discharged to the paper tray 21 on the upper surface of the main body case 2 via the paper discharge guide plate 18, the intermediate roller pair 19, and the paper discharge roller pair 20.

The transfer unit base 8 is formed by injection molding with a synthetic resin having an electrical insulation property such as ABS resin. The transfer unit base 8 has one side on the upper surface of the base plate 8a.
As shown in FIG. 2, the conductive (metal) shaft 9 of the transfer roller 9 made of conductive sponge or conductive rubber or the like.
A bifurcated groove-shaped supporting portion 31 for vertically moving the bearings 30 (only one of which is shown in FIG. 2) at the left and right ends of a is projected upward. The bearing 30 is configured such that the transfer roller 9 is pressed against the lower circumferential surface of the photosensitive drum 10 by a biasing means (not shown) such as a metallic (conductive) coil. At least one of the bearings 30 is made of a conductive material (metal or a composite member in which carbon black, graphite, and metal powder are dispersed in a synthetic resin). Then, the one bearing 3 having the conductivity
The lower ends of the terminals (both not shown) of the wiring connected to 0 (or the biasing means) are pressed into contact with the flat plate-shaped electrode portion formed on the upper surface of the high-voltage board 26 to electrically connect them. .

A plurality of fins for guiding the paper P passing through the transfer portion toward the fixing unit 15 are provided on the upper surface of the horizontal plate portion in the downwardly open support step portion on the base plate 8a adjacent to the support portion 31. The passage-shaped guide member 32 is integrally projecting upward. At the position of the base plate 8a between the support portion 31 and the passage guide member 32, a static eliminator (not shown) for removing the electrostatic charge charged on the paper P passing through the transfer portion is erected upward. And is grounded via a wiring (not shown).

Next, an embodiment of the wiring connection device of the present invention will be described below with reference to FIGS. In the present embodiment, the remaining toner amount detecting portion of the developing unit 11 of the process unit 7 and the detecting circuit (not shown) of the high voltage substrate 26 are electrically connected to each other via the transfer unit base 8. To do. That is, a step portion 33 is formed on one side of the base plate 8a of the transfer unit table 8 as one component, and the wiring connector 35 as shown in FIG. The wiring connector 35 is configured by bending a conductive metal plate such as a copper plate, an aluminum plate, or a steel plate twice in an L shape in a side view. The wiring connector 35 includes a first substantially vertical portion 35b formed by bending downward from one end of the first substantially horizontal portion 35a, and a first substantially vertical portion 35b formed by bending upward from the other end of the first substantially horizontal portion 35a. 2 substantially vertical portion 35c,
The other end of the second substantially vertical portion 35c includes a second substantially horizontal portion 35d bent substantially horizontally.

The lower horizontal plate 33 of the stepped portion 33 is provided in a locking hole 36a formed in the middle of the first substantially horizontal portion 35a in the longitudinal direction.
A forked locking claw 37a integrally provided on the upper surface of a is fitted and fixed, while a locking hole 36b formed at a midway portion in the longitudinal direction of the second substantially horizontal portion 35d is provided with a stepped portion 33a. Upper horizontal plate 33
A forked locking claw 37b integrally provided on the upper surface of b is fitted and fixed.

The first vertical portion 35b extends toward a flat plate-shaped electrode portion 38 provided on the upper surface of a high-voltage board 26 as another component arranged below the first vertical portion 35b.
A saw-shaped contact portion 39 is formed at the lower end of b, and when the rear surface (lower surface) of the transfer unit base 8 is brought closer to the upper surface of the high-voltage board 26, the first substantially-shaped portion of the wiring connector 35 is formed. When the horizontal portion 35a is elastically deformed as shown by the chain double-dashed line in FIG. 5, the saw-shaped contact portion 39 at the lower end of the first substantially vertical portion 35b is pressed and brought into contact with the surface of the electrode portion 38. It is configured to be electrically connected.

According to this structure, even when the transfer unit base 8 is brought closer to the upper surface of the high-voltage board 26 in a tilted state, the lower end of the first substantially vertical portion 35b of the wiring connector 35 is formed. If there is no difficulty in the work itself of bringing the saw-shaped contact portion 39 into contact with the surface of the electrode portion 38, and if the vertical distance between the transfer unit base 8 and the high-voltage board 26 becomes a predetermined size, then FIG. As shown, the first substantially horizontal portion 35a itself is spring-elastic, so that the first substantially vertical portion 35b is connected to the electrode portion 3a.
Since it can be pressed toward 8, there is an effect that the electrical connection action can be ensured. In addition, the electrode portion 38
Also, since it is sufficient to form the flat plate on the surface of the high voltage substrate 26, the manufacturing cost can be reduced.

At the end of the second horizontal portion 35d, there is provided a second connection terminal portion 40 having a pair of upside-down inverted J-shaped holding pieces 40a, 40a which face each other and project upward. Set up. Then, when the process unit 7 is mounted so as to approach the upper surface of the transfer unit base 8, the laterally projecting pin 42a of the sensor rod 42 of the toner remaining amount detecting unit 41 projected from the developing unit 11 as the third component. Is a pair of clamping pieces 40a, 40a of the second connection terminal portion 40.
It is pushed in between and electrically connected.

As shown in FIGS. 3 and 4, the toner remaining amount detecting portion 41 has a developing roller 12 arranged in the vicinity of the bottom of the developing portion unit 11 with its axis substantially horizontal, and the developing roller 12. And the sensor rod 42 arranged substantially parallel to the axis of the developing roller 12, and the AC is applied to the developing roller 12 during the developing operation.
Bias voltage (eg voltage ± 800V, current 5mm
A, a bipolar pulse having a frequency of 1800 cycles / second) is applied, a voltage corresponding to the amount of the magnetic toner 43 existing at the bottom of the developing unit 11 is generated due to a dielectric phenomenon.
Occurs in 2. The voltage generated at this time is the developing roller 1
It is a differential waveform with respect to the AC bias current flowing in 2.

Therefore, as shown in FIGS. 3 and 4, the developing roller 12 is provided near the one side of the bottom of the developing unit 11.
The lower end of the terminal 44 slidably contacting the electrically conductive shaft 12a is brought into contact with the contact terminal 46 in the cylindrical case 45 having an upward opening provided on one side of the base plate 8a of the transfer unit base 8 to contact the contact terminal 46. The lower surface of the above is urged upward by the urging coil spring 47 having conductivity inside the cylindrical case 45 to ensure the electrical contact between the terminal 44 and the contact terminal 46. The wiring 4 connected to the biasing coil spring 47
8 is connected to a biasing terminal 50 formed of a conductive biasing coil spring in a cylindrical case 49 having a downward opening protruding downward from the lower surface of the base plate 8a. The flat plate-shaped electrode portion 51 of the voltage substrate 26 is pressed and brought into contact with the developing roller 12 from an AC bias voltage application circuit (not shown) on the high voltage substrate 26.

The detection signal (voltage signal) received by the sensor rod 42 is applied to the projecting pin 42a and the wiring connector 35.
And a half-wave rectification by a rectification circuit (not shown) on the high voltage substrate 26 via the electrode section 38, and then the detection signal is level-shifted by a predetermined detection circuit of the control substrate 27,
Input to the analog port of the CPU (not shown). However, when the toner remaining amount in the developing unit 11 is large, the detection signal (voltage value) is large, and when the toner remaining amount is below a certain level, the detection signal (voltage value) drops extremely, so that the development The operator is informed of the timing of toner supply in the sub-unit 11.

In the above-described embodiment, the wiring connector 35 is applied to the wiring connection of the toner remaining amount detecting section 41, but the wiring connection device of the present invention is for applying a voltage from the high voltage substrate 26 to the transfer roller 9. It is needless to say that the present invention can be applied as a wiring connecting device, and can also be applied to various electrical components such as OA equipment such as a facsimile and a copying machine and home electric appliances.

[0023]

As described above, claim 1
The wiring connecting device of the invention described is a wiring connecting device for electrically connecting at least two components, wherein one of the components is bent in an L-shape when viewed from the side to form a substantially horizontal portion and a substantially vertical portion. A wiring connector consisting of and is fixed at a substantially horizontal portion thereof, and a substantially vertical portion of the wiring connector is extended in a direction approaching an electrode portion formed on the other component, and Since the lower end of the substantially vertical portion is pressed against the surface of the electrode portion in a state where the substantially horizontal portion of the connector is elastically deformed, the substantially vertical portion of the wiring connector in one component is connected to the other component. It is possible to approach the electrode part in parallel with the electrode part in a parallel direction, and it is also possible to approach the electrode part from any direction such as an oblique direction, and it is possible to maximize the wiring connection work of the two parts.

In particular, in the case of connecting two parts by a wire connecting device at a plurality of positions separated from each other, the substantially vertical part of the wiring connector of one part approaches the electrode part of the other part. Due to the arbitrariness of the direction, the work of electrically connecting and wiring at a plurality of locations can be extremely easily performed. Moreover, since the lower end of the substantially vertical portion is pressed and brought into contact with the surface of the electrode portion in a state where the substantially horizontal portion of the wiring connector is elastically deformed, the substantially vertical portion can be moved from any direction as described above. The effect that the electrical connection can be surely executed even if the electrode part is approached is achieved.

The invention described in claim 2 is the same as claim 1
In the wiring connection device of the invention described above, a connection terminal portion for the third component is provided in a substantially horizontal portion of the wiring connection body so as to extend in a direction opposite to the substantially vertical portion. Therefore, when arranging the three parts so that they are stacked one above the other or when arranging them in three rows on the left and right, it is possible to bring the other parts close to each other with only the part on which the wiring connector is mounted as the center. The effect is that the wiring connection between the three components can be performed extremely easily via the substantially vertical portion and the connection terminal portion in opposite directions.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of a laser printer.

FIG. 2 is a partial side sectional view of a process unit and the like.

FIG. 3 is a side sectional view of a main part.

FIG. 4 is a sectional view taken along the line IV-IV of FIG.

FIG. 5 is a perspective view of a wiring connector.

6A is a side view of a conventional connector, and FIG. 6B is a perspective view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 printer 2 main body case 7 process unit 8 transfer unit base 8a base plate 9 transfer roller 10 photosensitive drum 11 developing section unit 12 developing roller 26 high voltage substrate 33 step section 35 wiring connector 35a first substantially horizontal section 35b first 1 substantially vertical portion 38 electrode portion 39 contact portion 40 second connection terminal portion 42 sensor rod 42a protruding pin

Claims (2)

[Claims] 1. A wiring connecting device for electrically connecting at least two components, wherein the one component is for wiring that is bent in an L shape or the like in a side view and has a substantially horizontal portion and a substantially vertical portion. The connection body is fixed at its substantially horizontal portion, the substantially vertical portion of the wiring connection body is extended in a direction approaching the electrode portion formed on the other component, and A wiring connecting device, characterized in that the lower end of the substantially vertical portion is pressed against the surface of the electrode portion while the horizontal portion is elastically deformed. 2. The substantially horizontal portion of the wiring connection body,
The wiring connection device according to claim 1, wherein a connection terminal portion for the third component is provided so as to extend in a direction opposite to the substantially vertical portion.