JP2021019463A

JP2021019463A - Power supply device and image forming apparatus

Info

Publication number: JP2021019463A
Application number: JP2019134814A
Authority: JP
Inventors: 研介藤原; Kensuke Fujiwara
Original assignee: Kyocera Document Solutions Inc
Current assignee: Kyocera Document Solutions Inc
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2021-02-15

Abstract

To provide a power supply device that completes discharge of a capacitor when being removed without damaging components.SOLUTION: A power supply device 15 comprises: a high frequency transformer that converts an input voltage input to a primary-side circuit into an output voltage output from a secondary-side circuit; a capacitor 23 that smooths the input voltage on the primary-side circuit; a substrate 25 on which the high frequency transformer and the capacitor 23 are provided; and a discharge member 24 that is formed of a conductive resin and is movable when the substrate 25 is attached to and detached from a printer body. When the substrate 25 is attached to the printer body, the discharge member 24 is separated from an anode terminal 23b or a cathode terminal 23c of the capacitor 23, and when the substrate 25 is removed from the printer body, is movable to come into contact with the anode terminal 23b and the cathode terminal 23c to establish conduction between the anode terminal 23b and the cathode terminal 23c.SELECTED DRAWING: Figure 3

Description

本発明は、電源装置と、この電源装置を備えた画像形成装置に関する。 The present invention relates to a power supply device and an image forming device including the power supply device.

画像形成装置等の電子機器は、画像形成部等の負荷部に低圧の電力を供給する電源装置を備える。電源装置は、例えば、商用交流電源から交流の入力電圧を入力し、一次コイル及び二次コイルを有するトランスを備えて入力電圧を直流の出力電圧に変換し、また、一次コイルに並列に接続された電解コンデンサによって入力電圧を平滑化している。電源蔵置は、高効率で動作するように、電解コンデンサの漏れ電流を極力低減するように構成される。 An electronic device such as an image forming apparatus includes a power supply device that supplies low-voltage power to a load portion such as an image forming portion. The power supply device, for example, inputs an AC input voltage from a commercial AC power supply, has a transformer having a primary coil and a secondary coil, converts the input voltage into a DC output voltage, and is also connected in parallel with the primary coil. The input voltage is smoothed by the electrolytic capacitor. The power storage is configured to reduce the leakage current of the electrolytic capacitor as much as possible so that it can operate with high efficiency.

なお、電源装置をオフにしてから、電解コンデンサに充電された電荷の放電が完了するまでには時間がかかることがある。そのため、電子機器を修理するサービスマンが、電源装置をオフにした直後に電源装置を取り外すと、電解コンデンサに残存した電荷によって感電するおそれがある。従って、電源装置は、取り外されるときに、電解コンデンサの電荷の放電を完了させる必要がある。 It may take some time from turning off the power supply device to completing the discharge of the electric charge charged in the electrolytic capacitor. Therefore, if a serviceman who repairs an electronic device removes the power supply device immediately after turning off the power supply device, there is a risk of electric shock due to the electric charge remaining in the electrolytic capacitor. Therefore, the power supply needs to complete the discharge of the electric charge of the electrolytic capacitor when it is removed.

例えば、特許文献１の画像形成装置は、外部電源と電気的に接続されたコンデンサと、コンデンサの両端と電気的に接続される少なくとも一対の配線と、画像形成装置の本体に対する電源ユニットの相対移動に関連付けて、一対の配線の少なくとも一方を通じてコンデンサを放電させるための放電機構とを備える。放電機構は、電源ユニットのスライド動作に応じて、コンデンサが装着された第１の基板上の配線と、アースされた第２の基板とを電気的に接続する。 For example, the image forming apparatus of Patent Document 1 includes a capacitor electrically connected to an external power supply, at least a pair of wirings electrically connected to both ends of the capacitor, and a relative movement of the power supply unit with respect to the main body of the image forming apparatus. In connection with, a discharge mechanism for discharging the capacitor through at least one of the pair of wires is provided. The discharge mechanism electrically connects the wiring on the first board on which the capacitor is mounted and the grounded second board according to the sliding operation of the power supply unit.

特開２０１３−０６１５９６号公報Japanese Unexamined Patent Publication No. 2013-061596

従来の電源装置は、上記したように自身のスライド動作によって放電を行う構成では、瞬時に放電を行う必要がある。しかしながら、急峻な放電は、コンデンサの端子でスパークを発生させる可能性があり、コンデンサや基板等の構成要素にダメージを与えるおそれがある。なお、コンデンサの端子部に予め放電抵抗を実装しておくことでコンデンサの残存電荷を放電する構成も考えられるが、放電抵抗のような不必要な部品を備えることでコストが掛かり、構成が複雑化するおそれがある。 In the configuration in which the conventional power supply device discharges by its own sliding operation as described above, it is necessary to discharge the power instantly. However, a steep discharge may cause sparks at the terminals of the capacitor, which may damage components such as the capacitor and the substrate. It is conceivable to mount a discharge resistor on the terminal of the capacitor in advance to discharge the residual charge of the capacitor, but it is costly and complicated to provide unnecessary parts such as a discharge resistor. There is a risk of becoming.

そこで、本発明は上記事情を考慮し、構成要素にダメージを与えることなく、取り外し時にコンデンサの放電を完了する電源装置を提供することを目的とする。 Therefore, in consideration of the above circumstances, it is an object of the present invention to provide a power supply device that completes the discharge of the capacitor at the time of removal without damaging the components.

本発明の電源装置は、一次側回路に入力された入力電圧を、二次側回路で出力される出力電圧に変換する変圧器と、前記一次側回路で前記入力電圧を平滑化するコンデンサと、前記変圧器及び前記コンデンサが設けられた基板と、導電性樹脂で構成され、前記基板を筐体に着脱する際に可動する放電部材と、を備え、前記放電部材は、前記基板を前記筐体に取り付けた場合に、前記コンデンサの陽極端子又は陰極端子から離間し、前記基板を前記筐体から取り外した場合に、前記陽極端子及び前記陰極端子に接触して前記陽極端子及び前記陰極端子を導通させるように可動することを特徴とする。 The power supply device of the present invention includes a transformer that converts an input voltage input to the primary circuit into an output voltage output by the secondary circuit, a capacitor that smoothes the input voltage in the primary circuit, and a capacitor. A substrate provided with the transformer and the capacitor, and a discharge member made of a conductive resin and movable when the substrate is attached to and detached from the housing, the discharge member includes the substrate with the housing. When the board is separated from the anode terminal or the cathode terminal of the capacitor and the substrate is removed from the housing, the capacitor comes into contact with the anode terminal and the cathode terminal to conduct the anode terminal and the cathode terminal. It is characterized by being movable so as to make it move.

上記した電源装置は、前記基板を前記筐体の取付部に締結する締結部材と、前記陽極端子及び前記陰極端子に接近する方向に前記放電部材を付勢する付勢部材と、を更に備え、前記締結部材は、前記基板及び前記取付部を貫通して締結され、前記取付部を貫通した前記締結部材が、前記付勢部材の付勢力に抗して前記放電部材を前記陽極端子及び前記陰極端子から離間する方向に押圧し前記放電部材は、前記締結部材による押圧が解除されると、前記付勢部材に付勢されて前記陽極端子及び前記陰極端子に接触するとよい。 The power supply device described above further includes a fastening member for fastening the substrate to the mounting portion of the housing, and an urging member for urging the discharge member in a direction approaching the anode terminal and the cathode terminal. The fastening member is fastened through the substrate and the mounting portion, and the fastening member penetrating the mounting portion attaches the discharge member to the anode terminal and the cathode against the urging force of the urging member. When the discharge member is pressed in a direction away from the terminal and the pressing by the fastening member is released, the discharge member may be urged by the urging member to come into contact with the anode terminal and the cathode terminal.

上記した電源装置では、前記放電部材は、前記基板に軸支される回動軸と、前記回動軸から一方に延長して形成されて回動に応じて前記陽極端子及び前記陰極端子に対して接近及び離間する接触部と、前記回動軸を挟んで前記接触部と反対側の他方に延長して形成された被押圧部とを備えて、回動可能に前記基板に取り付けられ、前記接触部を前記陽極端子及び前記陰極端子に接近する方向に付勢する付勢部材を更に備え、前記基板は、前記筐体の内壁に前記被押圧部を押し付けた状態で前記筐体に取り付けられ、前記放電部材は、前記被押圧部が前記筐体の内壁に押し付けられることで、前記付勢部材の付勢力に抗して前記接触部が前記陽極端子又は前記陰極端子から離間するように回動し、更に、前記放電部材は、前記被押圧部を前記筐体から離間させると、前記付勢部材に付勢されて前記陽極端子及び前記陰極端子に接触してもよい。 In the power supply device described above, the discharge member is formed with a rotating shaft pivotally supported by the substrate and extending from the rotating shaft to one side with respect to the anode terminal and the cathode terminal in response to rotation. A contact portion that approaches and separates from the contact portion and a pressed portion that is formed so as to extend to the other side opposite to the contact portion with the rotating shaft sandwiched therein are rotatably attached to the substrate. An urging member for urging the contact portion in a direction approaching the anode terminal and the cathode terminal is further provided, and the substrate is attached to the housing in a state where the pressed portion is pressed against the inner wall of the housing. The discharge member is rotated so that the contact portion is separated from the anode terminal or the cathode terminal against the urging force of the urging member by pressing the pressed portion against the inner wall of the housing. Further, the discharge member may be urged by the urging member and come into contact with the anode terminal and the cathode terminal when the pressed portion is separated from the housing.

上記した電源装置では、前記放電部材は、前記陽極端子及び前記陰極端子に対して接近する方向及び離間する方向に摺動可能に設けられ、前記放電部材を前記陽極端子及び前記陰極端子に接近する方向に付勢する付勢部材を更に備え、前記基板は、前記付勢部材の付勢力に抗して前記放電部材を前記陽極端子又は前記陰極端子から離間した状態で、前記放電部材を前記筐体の係合部に係合させて、前記筐体に取り付けられ、前記放電部材は、前記係合部による係合が解除されると、前記付勢部材に付勢されて前記陽極端子及び前記陰極端子に接触してもよい。 In the power supply device described above, the discharge member is slidably provided in a direction approaching and away from the anode terminal and the cathode terminal, and the discharge member approaches the anode terminal and the cathode terminal. The substrate further includes an urging member that urges in the direction, and the substrate holds the discharging member in a state of being separated from the anode terminal or the cathode terminal against the urging force of the urging member. The discharge member is attached to the housing by engaging with the engaging portion of the body, and when the engagement by the engaging portion is released, the discharge member is urged by the urging member to the anode terminal and the above. It may come into contact with the cathode terminal.

本発明の画像形成装置は、上記した電源装置と、前記負荷部として、用紙に画像を形成する画像形成部と、を備えていることを特徴とする。 The image forming apparatus of the present invention is characterized by including the above-mentioned power supply device and an image forming unit for forming an image on paper as the load unit.

本発明によれば、構成要素にダメージを与えることなく、取り外し時にコンデンサの放電を完了する電源装置を提供することが可能となる。 According to the present invention, it is possible to provide a power supply device that completes the discharge of a capacitor at the time of removal without damaging the components.

本発明の第１実施形態に係るプリンターを示す断面図である。It is sectional drawing which shows the printer which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る電源装置を示す回路図である。It is a circuit diagram which shows the power-source device which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る電源装置の、放電前の放電部材及びその周辺を示す断面図である。It is sectional drawing which shows the discharge member before discharge and the periphery thereof of the power source device which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る電源装置の、放電中の放電部材及びその周辺を示す断面図である。It is sectional drawing which shows the discharge member during discharge and its periphery of the power source device which concerns on 1st Embodiment of this invention. 本発明の第２実施形態に係る電源装置の、放電前の放電部材及びその周辺を示す断面図である。It is sectional drawing which shows the discharge member before discharge and its periphery of the power source device which concerns on 2nd Embodiment of this invention. 本発明の第２実施形態に係る電源装置の、放電中の放電部材及びその周辺を示す断面図である。It is sectional drawing which shows the discharge member during discharge and its periphery of the power source device which concerns on 2nd Embodiment of this invention. 本発明の他の実施形態に係る電源装置の、放電前の放電部材及びその周辺を示す断面図である。It is sectional drawing which shows the discharge member before discharge and the periphery thereof of the power-source device which concerns on another Embodiment of this invention. 本発明の他の実施形態に係る電源装置の、放電中の放電部材及びその周辺を示す断面図である。It is sectional drawing which shows the discharge member during discharge and the periphery thereof of the power source device which concerns on other Embodiment of this invention. 本発明の第３実施形態に係る電源装置の、放電前の放電部材及びその周辺を示す断面図である。It is sectional drawing which shows the discharge member before discharge and its periphery of the power source device which concerns on 3rd Embodiment of this invention. 本発明の第３実施形態に係る電源装置の、放電中の放電部材及びその周辺を示す断面図である。It is sectional drawing which shows the discharge member during discharge and its periphery of the power source device which concerns on 3rd Embodiment of this invention. 本発明の第３実施形態に係る電源装置の、放電中の放電部材及びその周辺を摺動方向から示す断面図である。It is sectional drawing which shows the electric discharge member during discharge and the periphery thereof from the sliding direction of the power source device which concerns on 3rd Embodiment of this invention.

先ず、本発明の第１実施形態に係るプリンター１（画像形成装置）の全体の構成について図１を参照しながら説明する。以下、説明の便宜上、図１における紙面手前側をプリンター１の前側とする。各図に適宜付される矢印Ｌ、Ｒ、Ｕ、Ｌｏは、それぞれプリンター１の左側、右側、上側、下側を示している。 First, the overall configuration of the printer 1 (image forming apparatus) according to the first embodiment of the present invention will be described with reference to FIG. Hereinafter, for convenience of explanation, the front side of the paper surface in FIG. 1 is referred to as the front side of the printer 1. Arrows L, R, U, and Lo appropriately attached to each figure indicate the left side, right side, upper side, and lower side of the printer 1, respectively.

プリンター１は、略箱型形状のプリンター本体２（筐体）を備え、プリンター本体２の下部には用紙を収納する給紙カセット３が設けられ、プリンター本体２の上部には排紙トレイ４が設けられる。 The printer 1 includes a substantially box-shaped printer main body 2 (housing), a paper feed cassette 3 for storing paper is provided in the lower part of the printer main body 2, and a paper output tray 4 is provided in the upper part of the printer main body 2. Provided.

プリンター本体２の内部には、排紙トレイ４の下方に露光部５が設けられ、露光部５の下方に、用紙に画像を形成する画像形成部６が設けられる。画像形成部６には、像担持体である感光体ドラム７が回転可能に設けられ、感光体ドラム７の周囲には、帯電部と、トナーコンテナに接続された現像部と、転写ローラーと、クリーニング部とが、感光体ドラム７の回転方向に沿って配置される。 Inside the printer main body 2, an exposure unit 5 is provided below the output tray 4, and an image forming unit 6 for forming an image on paper is provided below the exposure unit 5. A photoconductor drum 7, which is an image carrier, is rotatably provided in the image forming unit 6, and around the photoconductor drum 7, a charging unit, a developing unit connected to a toner container, a transfer roller, and the like, The cleaning unit is arranged along the rotation direction of the photoconductor drum 7.

また、プリンター本体２の内部には、用紙の搬送経路１０が設けられる。搬送経路１０の上流端には給紙部１１が給紙カセット３の近傍に設けられ、搬送経路１０の中流部には、感光体ドラム７と転写ローラーによって構成される転写部１２が設けられる。搬送経路１０の下流部には定着部１３が設けられ、搬送経路１０の下流端には排紙部１４が排紙トレイ４の近傍に設けられる。 Further, a paper transport path 10 is provided inside the printer main body 2. A paper feed section 11 is provided near the paper feed cassette 3 at the upstream end of the transport path 10, and a transfer section 12 composed of a photoconductor drum 7 and a transfer roller is provided at the middle stream portion of the transport path 10. A fixing portion 13 is provided in the downstream portion of the transport path 10, and a paper discharge portion 14 is provided in the vicinity of the paper discharge tray 4 at the downstream end of the transport path 10.

更に、プリンター本体２の内部には、プリンター１の各構成要素に電力を供給する電源装置１５と、プリンター１の各構成要素を制御する制御部１６とが備えられる。電源装置１５は、たとえば、プリンター本体２の電源収容部（図示せず）に取り付けられる。電源装置１５の詳細は後述する。 Further, inside the printer main body 2, a power supply device 15 for supplying electric power to each component of the printer 1 and a control unit 16 for controlling each component of the printer 1 are provided. The power supply device 15 is attached to, for example, a power supply accommodating portion (not shown) of the printer main body 2. Details of the power supply device 15 will be described later.

制御部１６は、ＣＰＵ（ＣｅｎｔｒａｌＰｒｏｃｅｓｓｉｎｇＵｎｉｔ）等からなり、ＲＯＭ（ＲｅａｄＯｎｌｙＭｅｍｏｒｙ）やＲＡＭ（ＲａｎｄｏｍＡｃｃｅｓｓＭｅｍｏｒｙ）等で構成される記憶部（図示せず）に接続される。制御部１６は、プリンター１の各構成要素に接続されていて、記憶部に記憶された制御プログラムや制御用データに基づいて演算処理を実行することにより各構成要素を制御する。例えば、制御部１６は、電気的に負荷の掛かるプリンター１の構成要素である画像形成部６等の負荷部１７へ電力を供給するために、負荷部１７に掛かる電流値のフィードバック制御によって電源装置１５を制御する。 The control unit 16 is composed of a CPU (Central Processing Unit) or the like, and is connected to a storage unit (not shown) composed of a ROM (Read Only Memory), a RAM (Random Access Memory), or the like. The control unit 16 is connected to each component of the printer 1 and controls each component by executing arithmetic processing based on the control program and control data stored in the storage unit. For example, the control unit 16 is a power supply device by feedback control of the current value applied to the load unit 17 in order to supply electric power to the load unit 17 such as the image forming unit 6 which is a component of the printer 1 which is electrically loaded. 15 is controlled.

次に、プリンター１の画像形成動作について説明する。プリンター１は、外部のコンピューター等から画像データが入力され、印刷開始の指示がなされると、画像形成動作を開始する。画像形成動作では、先ず、画像形成部６の帯電部が感光体ドラム７を帯電した後、露光部５が画像データに応じて感光体ドラム７を露光し、静電潜像が感光体ドラム７上に形成される。そして、画像形成部６の現像部が感光体ドラム７上の静電潜像をトナーで現像し、トナー像が感光体ドラム７上に形成される。 Next, the image forming operation of the printer 1 will be described. When image data is input from an external computer or the like and an instruction to start printing is given, the printer 1 starts an image forming operation. In the image forming operation, first, the charged part of the image forming part 6 charges the photoconductor drum 7, then the exposed part 5 exposes the photoconductor drum 7 according to the image data, and the electrostatic latent image is the photoconductor drum 7. Formed on top. Then, the developing unit of the image forming unit 6 develops the electrostatic latent image on the photoconductor drum 7 with toner, and the toner image is formed on the photoconductor drum 7.

一方、給紙部１１によって給紙カセット３から取り出された用紙が搬送経路１０上を転写部１２へ搬送され、感光体ドラム７上のトナー像が用紙に転写される。トナー像を転写された用紙は、定着部１３へ搬送され、用紙にトナー像が定着される。トナー像が定着された用紙は、排紙部１４から排紙トレイ４へ排出される。 On the other hand, the paper taken out from the paper feed cassette 3 by the paper feed unit 11 is conveyed to the transfer unit 12 on the transfer path 10, and the toner image on the photoconductor drum 7 is transferred to the paper. The paper on which the toner image is transferred is conveyed to the fixing unit 13, and the toner image is fixed on the paper. The paper on which the toner image is fixed is discharged from the paper ejection unit 14 to the output tray 4.

次に、電源装置１５の構成について、図２を参照しながら説明する。図２に示すように、電源装置１５は、商用の交流電源２０に接続されていて、高周波トランス２１（変圧器）と、一次整流回路２２と、コンデンサ２３と、放電部材２４とを備える。電源装置１５は、例えば、スイッチング方式を適用して、画像形成部６等の負荷部１７に低圧の電力を供給するように構成される。 Next, the configuration of the power supply device 15 will be described with reference to FIG. As shown in FIG. 2, the power supply device 15 is connected to a commercial AC power supply 20 and includes a high frequency transformer 21 (transformer), a primary rectifier circuit 22, a capacitor 23, and a discharge member 24. The power supply device 15 is configured to supply low-voltage power to a load unit 17 such as an image forming unit 6 by applying, for example, a switching method.

高周波トランス２１、一次整流回路２２、コンデンサ２３及び放電部材２４は、図３及び図４に示すように、基板２５に設けられる。基板２５の裏面には、電源装置１５の各部を接続する配線が設けられ、即ち、基板２５の裏面が半田面を構成する。基板２５は、半田面をプリンター本体２の電源収容部の取付部２６に対向させて、取付部２６に取り付けられる。基板２５は、ビス２７（締結部材）によって取付部２６に締結される。ビス２７は、基板２５に設けられた貫通穴２５ａに挿入されて、取付部２６に設けられた締結穴２６ａに螺合して締結され、更に、取付部２６を貫通して突出する。なお、取付部２６は、接地されて、接地探知として機能してもよい。 The high-frequency transformer 21, the primary rectifier circuit 22, the capacitor 23, and the discharge member 24 are provided on the substrate 25 as shown in FIGS. 3 and 4. Wiring for connecting each part of the power supply device 15 is provided on the back surface of the substrate 25, that is, the back surface of the substrate 25 constitutes a solder surface. The board 25 is attached to the attachment portion 26 with the solder surface facing the attachment portion 26 of the power supply accommodating portion of the printer main body 2. The substrate 25 is fastened to the mounting portion 26 with screws 27 (fastening members). The screw 27 is inserted into the through hole 25a provided in the substrate 25, screwed into the fastening hole 26a provided in the mounting portion 26 and fastened, and further penetrates and protrudes through the mounting portion 26. The mounting portion 26 may be grounded and function as a ground detection.

高周波トランス２１は、交流電源２０から交流の電力（入力電圧）を入力し、電磁誘導を利用して入力電圧を直流の出力電圧に変換する変圧器である。高周波トランス２１は、磁気結合された一次コイル２１ａ及び二次コイル２１ｂを有して構成される。電源装置１５は、一次コイル２１ａ側の一次側回路１５ａと、二次コイル２１ｂ側の二次側回路１５ｂとから構成される。 The high frequency transformer 21 is a transformer that inputs AC power (input voltage) from the AC power supply 20 and converts the input voltage into a DC output voltage by using electromagnetic induction. The high frequency transformer 21 includes a magnetically coupled primary coil 21a and a secondary coil 21b. The power supply device 15 includes a primary side circuit 15a on the primary coil 21a side and a secondary side circuit 15b on the secondary coil 21b side.

一次整流回路２２は、交流電源２０と高周波トランス２１との間に設けられ、交流電源２０から高周波トランス２１へ供給される電力の交流電流を整流する。一次整流回路２２は、例えば、４つのダイオードを組み合わせたブリッジ型整流回路で構成され、一次整流回路２２の出力側が高周波トランス２１の一次コイル２１ａに接続される。 The primary rectifier circuit 22 is provided between the AC power supply 20 and the high-frequency transformer 21 to rectify the AC current of the power supplied from the AC power supply 20 to the high-frequency transformer 21. The primary rectifier circuit 22 is composed of, for example, a bridge type rectifier circuit in which four diodes are combined, and the output side of the primary rectifier circuit 22 is connected to the primary coil 21a of the high frequency transformer 21.

コンデンサ２３は、一次整流回路２２と高周波トランス２１との間で、高周波トランス２１の一次コイル２１ａと並列に接続される。コンデンサ２３は、例えば、電解コンデンサであり、コンデンサ２３の陽極（一端）は、一次整流回路２２の出力側に接続されている。そして、コンデンサ２３は、一次整流回路２２から一次コイル２１ａに供給される交流の入力電圧を平滑化する平滑回路を構成し、入力電圧を充電して電荷を蓄積する。 The capacitor 23 is connected in parallel with the primary coil 21a of the high frequency transformer 21 between the primary rectifier circuit 22 and the high frequency transformer 21. The capacitor 23 is, for example, an electrolytic capacitor, and the anode (one end) of the capacitor 23 is connected to the output side of the primary rectifier circuit 22. Then, the capacitor 23 constitutes a smoothing circuit that smoothes the AC input voltage supplied from the primary rectifier circuit 22 to the primary coil 21a, charges the input voltage, and accumulates electric charges.

コンデンサ２３は、例えば、コンデンサ本体２３ａと、陽極端子２３ｂと、陰極端子２３ｃとから構成される。陽極端子２３ｂは、一次整流回路２２の出力側に接続され、陰極端子２３ｃは、接地されている。コンデンサ本体２３ａは、基板２５の表面側に設けられ、陽極端子２３ｂ及び陰極端子２３ｃは、基板２５を貫通して半田面に半田付けされる（取り付けられる）。 The capacitor 23 is composed of, for example, a capacitor body 23a, an anode terminal 23b, and a cathode terminal 23c. The anode terminal 23b is connected to the output side of the primary rectifier circuit 22, and the cathode terminal 23c is grounded. The capacitor body 23a is provided on the surface side of the substrate 25, and the anode terminal 23b and the cathode terminal 23c penetrate the substrate 25 and are soldered (attached) to the solder surface.

放電部材２４は、例えば、５００Ω〜１ｋΩの抵抗値の導電性樹脂で構成され、基板２５をプリンター本体２の取付部２６に着脱する際に可動するように構成される。放電部材２４は、基板２５の半田面側で、コンデンサ２３の陽極端子２３ｂ及び陰極端子２３ｃに対応する位置に配置される。放電部材２４は、基板２５をプリンター本体２に取り付けた場合に、陽極端子２３ｂ及び陰極端子２３ｃの少なくとも一方から離間し、基板２５をプリンター本体２から取り外した場合に、陽極端子２３ｂ及び陰極端子２３ｃに接近して接触するように移動する。 The discharge member 24 is made of, for example, a conductive resin having a resistance value of 500 Ω to 1 kΩ, and is configured to be movable when the substrate 25 is attached to or detached from the attachment portion 26 of the printer main body 2. The discharge member 24 is arranged on the solder side of the substrate 25 at a position corresponding to the anode terminal 23b and the cathode terminal 23c of the capacitor 23. The discharge member 24 is separated from at least one of the anode terminal 23b and the cathode terminal 23c when the substrate 25 is attached to the printer main body 2, and when the substrate 25 is removed from the printer main body 2, the anode terminal 23b and the cathode terminal 23c Move closer to and in contact with.

例えば、放電部材２４は、放電部材２４の一端側で基板２５に軸支される回動軸２４ａと、板状の接触部２４ｂと、板状の被押圧部２４ｃとを備えて一体的に形成され、回動軸２４ａの周りに回動可能に設けられる。回動軸２４ａは、例えば、基板２５の半田面と平行な軸方向を有し、基板２５の半田面側でコンデンサ２３の近傍に設けられる。 For example, the discharge member 24 is integrally formed by including a rotating shaft 24a pivotally supported by the substrate 25 on one end side of the discharge member 24, a plate-shaped contact portion 24b, and a plate-shaped pressed portion 24c. It is rotatably provided around the rotation shaft 24a. The rotating shaft 24a has, for example, an axial direction parallel to the solder surface of the substrate 25, and is provided near the capacitor 23 on the solder surface side of the substrate 25.

接触部２４ｂは、回動軸２４ａから一方に延長して形成されていて、コンデンサ２３の陽極端子２３ｂ及び陰極端子２３ｃに対応する位置に配置される。そして、接触部２４ｂは、放電部材２４の回動に応じて陽極端子２３ｂ及び陰極端子２３ｃに対して接近及び離間するように構成される。 The contact portion 24b is formed so as to extend from the rotation shaft 24a to one side, and is arranged at a position corresponding to the anode terminal 23b and the cathode terminal 23c of the capacitor 23. The contact portion 24b is configured to approach and separate from the anode terminal 23b and the cathode terminal 23c according to the rotation of the discharge member 24.

被押圧部２４ｃは、接触部２４ｂから更に延長して形成されていて、被押圧部２４ｃと基板２５との間には、取付部２６を挿入するための空間が設けられる。被押圧部２４ｃは、接触部２４ｂが陽極端子２３ｂ及び陰極端子２３ｃに接触した状態でも、基板２５から離間していて、例えば、接触部２４ｂと被押圧部２４ｃとが階段状を成している。 The pressed portion 24c is further extended from the contact portion 24b, and a space for inserting the mounting portion 26 is provided between the pressed portion 24c and the substrate 25. The pressed portion 24c is separated from the substrate 25 even when the contact portion 24b is in contact with the anode terminal 23b and the cathode terminal 23c, and for example, the contact portion 24b and the pressed portion 24c form a stepped shape. ..

放電部材２４の他端側には、放電部材２４と基板２５との間にばね２８（付勢部材）が取り付けられ、ばね２８は、陽極端子２３ｂ及び陰極端子２３ｃに接近する方向に放電部材２４を付勢している。ばね２８は、例えば、引張コイルばねで構成され、収縮する方向に付勢力を有する。 A spring 28 (a urging member) is attached between the discharge member 24 and the substrate 25 on the other end side of the discharge member 24, and the spring 28 is a discharge member 24 in a direction approaching the anode terminal 23b and the cathode terminal 23c. Is urging. The spring 28 is composed of, for example, a tension coil spring and has an urging force in a contracting direction.

電源装置１５の着脱動作について説明する。この電源装置１５をプリンター本体２に取り付けるとき、先ず、取付部２６が基板２５と放電部材２４の被押圧部２４ｃとの間に挿入されるように電源装置１５を配置する。そして、ビス２７を、基板２５の貫通穴２５ａに挿入して、取付部２６の締結穴２６ａに螺合させる。このとき、ビス２７を、締結穴２６ａを貫通させて放電部材２４の被押圧部２４ｃ側に突出させる。このように突出するビス２７が被押圧部２４ｃを押圧し、放電部材２４の接触部２４ｂは、ばね２８の付勢力に抗して陽極端子２３ｂ及び陰極端子２３ｃの少なくとも一方から離間する。 The attachment / detachment operation of the power supply device 15 will be described. When the power supply device 15 is attached to the printer main body 2, the power supply device 15 is first arranged so that the attachment portion 26 is inserted between the substrate 25 and the pressed portion 24c of the discharge member 24. Then, the screw 27 is inserted into the through hole 25a of the substrate 25 and screwed into the fastening hole 26a of the mounting portion 26. At this time, the screw 27 is made to penetrate the fastening hole 26a and protrude toward the pressed portion 24c side of the discharge member 24. The screw 27 protruding in this way presses the pressed portion 24c, and the contact portion 24b of the discharge member 24 is separated from at least one of the anode terminal 23b and the cathode terminal 23c against the urging force of the spring 28.

また、電源装置１５をプリンター本体２から取り外すとき、ビス２７を、取付部２６及び基板２５から取り外す。このとき、ビス２７は締結穴２６ａから被押圧部２４ｃ側に突出しなくなり、ビス２７による被押圧部２４ｃの押圧が解除される。そして、放電部材２４は、ばね２８によって付勢されて陽極端子２３ｂ及び陰極端子２３ｃに接近する方向に可動し、接触部２４ｂが陽極端子２３ｂ及び陰極端子２３ｃに接触する。これにより、陽極端子２３ｂ及び陰極端子２３ｃが導電性の放電部材２４を介して導通し、陽極端子２３ｂが放電部材２４及び陰極端子２３ｃを介して接地される。そのため、コンデンサ２３の残存電荷は、陽極端子２３ｂから放電部材２４及び陰極端子２３ｃを介して放電される。 Further, when the power supply device 15 is removed from the printer main body 2, the screw 27 is removed from the mounting portion 26 and the board 25. At this time, the screw 27 does not protrude from the fastening hole 26a toward the pressed portion 24c, and the pressing of the pressed portion 24c by the screw 27 is released. Then, the discharge member 24 is urged by the spring 28 and moves in a direction approaching the anode terminal 23b and the cathode terminal 23c, and the contact portion 24b comes into contact with the anode terminal 23b and the cathode terminal 23c. As a result, the anode terminal 23b and the cathode terminal 23c are electrically connected to each other via the conductive discharge member 24, and the anode terminal 23b is grounded via the discharge member 24 and the cathode terminal 23c. Therefore, the residual charge of the capacitor 23 is discharged from the anode terminal 23b via the discharge member 24 and the cathode terminal 23c.

上記した第１実施形態では、放電部材２４が回動軸２４ａの周りに回動する例を説明したが、本発明はこの例に限定されない。例えば、他の実施形態では、放電部材２４が陽極端子２３ｂ及び陰極端子２３ｃに対して接近する方向及び離間する方向に沿って移動するように構成されてもよい。この場合、基板２５の半田面側に、陽極端子２３ｂ及び陰極端子２３ｃに対して接近する方向及び離間する方向に延びるガイド部材を備えて、放電部材２４がこのガイド部材に沿って可動するように設けられるとよい。 In the first embodiment described above, an example in which the discharge member 24 rotates around the rotation shaft 24a has been described, but the present invention is not limited to this example. For example, in another embodiment, the discharge member 24 may be configured to move along a direction in which the discharge member 24 approaches and separates from the anode terminal 23b and the cathode terminal 23c. In this case, a guide member extending in a direction approaching and away from the anode terminal 23b and the cathode terminal 23c is provided on the solder surface side of the substrate 25 so that the discharge member 24 can move along the guide member. It is good to be provided.

また、上記した第１実施形態では、接触部２４ｂと被押圧部２４ｃとが階段状を成して放電部材２４が形成される例を説明したが、本発明はこの例に限定されない。例えば、他の実施形態では、被押圧部２４ｃと基板２５との間に取付部２６を挿入する空間が設けられていれば、接触部２４ｂに対して被押圧部２４ｃが傾斜するように放電部材２４が形成されてもよい。 Further, in the above-described first embodiment, an example in which the contact portion 24b and the pressed portion 24c form a stepped shape to form the discharge member 24 has been described, but the present invention is not limited to this example. For example, in another embodiment, if a space for inserting the mounting portion 26 is provided between the pressed portion 24c and the substrate 25, the discharge member is inclined so that the pressed portion 24c is inclined with respect to the contact portion 24b. 24 may be formed.

第１実施形態によれば、上記したように、プリンター１（画像形成装置）の電源装置１５は、一次側回路１５ａに入力された入力電圧を、二次側回路１５ｂで出力される出力電圧に変換する高周波トランス２１（変圧器）と、一次側回路１５ａで入力電圧を平滑化するコンデンサ２３と、高周波トランス２１及びコンデンサ２３が設けられた基板２５と、導電性樹脂で構成され、基板２５をプリンター本体２（筐体）に着脱する際に可動する放電部材２４とを備える。放電部材２４は、基板２５をプリンター本体２に取り付けた場合に、コンデンサ２３の陽極端子２３ｂ又は陰極端子２３ｃから離間し、基板２５をプリンター本体２から取り外した場合に、陽極端子２３ｂ及び陰極端子２３ｃに接触して陽極端子２３ｂ及び陰極端子２３ｃを導通させるように可動する。 According to the first embodiment, as described above, the power supply device 15 of the printer 1 (image forming device) converts the input voltage input to the primary side circuit 15a into the output voltage output to the secondary side circuit 15b. The substrate 25 is composed of a high-frequency transformer 21 (transformer) to be converted, a capacitor 23 for smoothing the input voltage in the primary circuit 15a, a substrate 25 provided with the high-frequency transformer 21 and the capacitor 23, and a conductive resin. It includes a discharge member 24 that is movable when it is attached to and detached from the printer main body 2 (housing). The discharge member 24 is separated from the anode terminal 23b or the cathode terminal 23c of the capacitor 23 when the substrate 25 is attached to the printer main body 2, and when the substrate 25 is removed from the printer main body 2, the anode terminal 23b and the cathode terminal 23c. It is movable so as to make the anode terminal 23b and the cathode terminal 23c conductive in contact with.

これにより、電源装置１５は、プリンター本体２からの取り外し動作に応じて自動的に、導電性の放電部材２４が陽極端子２３ｂ及び陰極端子２３ｃに接触して、陽極端子２３ｂ及び陰極端子２３ｃが放電部材２４を介して導通する。従って、電源装置１５の取り外し時に、コンデンサ２３の残存電荷を、陽極端子２３ｂから放電部材２４及び陰極端子２３ｃを介して放電することができる。 As a result, in the power supply device 15, the conductive discharge member 24 automatically comes into contact with the anode terminal 23b and the cathode terminal 23c in response to the removal operation from the printer main body 2, and the anode terminal 23b and the cathode terminal 23c are discharged. It conducts through the member 24. Therefore, when the power supply device 15 is removed, the residual charge of the capacitor 23 can be discharged from the anode terminal 23b via the discharge member 24 and the cathode terminal 23c.

更に、例えば、放電部材２４の抵抗値を５００Ω〜１ｋΩに設定することで、コンデンサ２３の陽極端子２３ｂや陰極端子２３ｃでのスパークの発生を抑制することができ、短時間でコンデンサ２３の残存電荷を放電することが可能となる。なお、陰極端子２３ｃの接地を利用するので、放電抵抗等の部品を備える必要がなく、放電抵抗等の部品を備える構成に比べて、コストを抑制すると共に、構成を簡易化することができる。 Further, for example, by setting the resistance value of the discharge member 24 to 500Ω to 1kΩ, it is possible to suppress the generation of sparks at the anode terminal 23b and the cathode terminal 23c of the capacitor 23, and the residual charge of the capacitor 23 can be suppressed in a short time. Can be discharged. Since the grounding of the cathode terminal 23c is used, it is not necessary to provide a component such as a discharge resistor, and the cost can be suppressed and the configuration can be simplified as compared with a configuration including a component such as a discharge resistor.

このように、電源装置１５は、構成要素にダメージを与えることなく、取り外し時にコンデンサ２３の放電を完了することができる。 In this way, the power supply device 15 can complete the discharge of the capacitor 23 at the time of removal without damaging the components.

また、電源装置１５は、基板２５をプリンター本体２の取付部２６に締結するビス２７（締結部材）と、陽極端子２３ｂや陰極端子２３ｃに接近する方向に放電部材２４を付勢するばね２８（付勢部材）とを更に備える。ビス２７は、基板２５及び取付部２６を貫通して締結され、取付部２６を貫通したビス２７が、ばね２８の付勢力に抗して放電部材２４を陽極端子２３ｂや陰極端子２３ｃから離間する方向に押圧する。放電部材２４は、ビス２７による押圧が解除されると、ビス２７に付勢されて陽極端子２３ｂ及び陰極端子２３ｃに接触する。 Further, the power supply device 15 has a screw 27 (fastening member) for fastening the substrate 25 to the mounting portion 26 of the printer main body 2 and a spring 28 (fastening member) for urging the discharge member 24 in a direction approaching the anode terminal 23b and the cathode terminal 23c. It is further provided with an urging member). The screw 27 is fastened through the substrate 25 and the mounting portion 26, and the screw 27 penetrating the mounting portion 26 separates the discharge member 24 from the anode terminal 23b and the cathode terminal 23c against the urging force of the spring 28. Press in the direction. When the pressure by the screw 27 is released, the discharge member 24 is urged by the screw 27 and comes into contact with the anode terminal 23b and the cathode terminal 23c.

これにより、電源装置１５の取り外し時においてビス２７の取り外し動作を利用する簡易な手法で、放電部材２４を陽極端子２３ｂ及び陰極端子２３ｃに接触させることができる。従って、既存の構成を利用することができ、コストを抑制すると共に、構成を簡易化することができる。 Thereby, the discharge member 24 can be brought into contact with the anode terminal 23b and the cathode terminal 23c by a simple method using the removal operation of the screw 27 when the power supply device 15 is removed. Therefore, the existing configuration can be used, the cost can be suppressed, and the configuration can be simplified.

次に、本発明の第２実施形態に係る電源装置３０について図５及び図６を参照しながら説明する。なお、第１実施形態の電源装置１５と同様の構成は説明を省略する。第２実施形態の電源装置３０において、高周波トランス２１、一次整流回路２２、コンデンサ２３及び基板２５は、第１実施形態の電源装置１５と同様の構成を有する。第２実施形態の電源装置３０は、第１実施形態の放電部材２４に対応する放電部材３１を備える。以下、第２実施形態の放電部材３１について、第１実施形態の放電部材２４と異なる構成を説明する。 Next, the power supply device 30 according to the second embodiment of the present invention will be described with reference to FIGS. 5 and 6. The same configuration as the power supply device 15 of the first embodiment will not be described. In the power supply device 30 of the second embodiment, the high frequency transformer 21, the primary rectifier circuit 22, the capacitor 23, and the substrate 25 have the same configurations as the power supply device 15 of the first embodiment. The power supply device 30 of the second embodiment includes a discharge member 31 corresponding to the discharge member 24 of the first embodiment. Hereinafter, the configuration of the discharge member 31 of the second embodiment different from that of the discharge member 24 of the first embodiment will be described.

放電部材３１は、第１実施形態の放電部材２４と同様に導電性樹脂で構成され、基板２５の端部に軸支される回動軸３１ａと、板状の接触部３１ｂと、板状の被押圧部３１ｃとを備えて一体的に形成され、回動軸３１ａの周りに回動可能に設けられる。回動軸３１ａは、例えば、基板２５の半田面と平行な軸方向を有し、基板２５の半田面側でコンデンサ２３の近傍に設けられる。 The discharge member 31 is made of a conductive resin like the discharge member 24 of the first embodiment, and has a rotating shaft 31a axially supported at the end of the substrate 25, a plate-shaped contact portion 31b, and a plate-shaped discharge member 31. It is integrally formed with the pressed portion 31c, and is rotatably provided around the rotation shaft 31a. The rotating shaft 31a has, for example, an axial direction parallel to the solder surface of the substrate 25, and is provided near the capacitor 23 on the solder surface side of the substrate 25.

接触部３１ｂは、回動軸３１ａから一方に延長して形成されていて、コンデンサ２３の陽極端子２３ｂ及び陰極端子２３ｃに対応する位置に配置される。そして、接触部３１ｂは、放電部材３１の回動に応じて陽極端子２３ｂ及び陰極端子２３ｃに対して接近及び離間するように構成される。 The contact portion 31b is formed so as to extend from the rotation shaft 31a to one side, and is arranged at a position corresponding to the anode terminal 23b and the cathode terminal 23c of the capacitor 23. The contact portion 31b is configured to approach and separate from the anode terminal 23b and the cathode terminal 23c according to the rotation of the discharge member 31.

被押圧部３１ｃは、回動軸３１ａを挟んで接触部３１ｂと反対側で、回動軸３１ａから接触部３１ｂと鈍角を構成する他方に延長して形成され、例えば、基板２５の半田面と反対側の表面側に傾斜して形成される。なお、被押圧部３１ｃと鈍角を構成する側の接触部３１ｂの表面が、陽極端子２３ｂ及び陰極端子２３ｃに対向すると共に、被押圧部３１ｃが、基板２５の端部から外側に突出して基板２５の表面側に傾斜するように、放電部材３１が配置される。 The pressed portion 31c is formed so as to extend from the rotating shaft 31a to the other side forming an obtuse angle with the contact portion 31b on the opposite side of the rotating shaft 31a to the contact portion 31b. It is formed so as to be inclined to the surface side on the opposite side. The surface of the contact portion 31b on the side forming an obtuse angle with the pressed portion 31c faces the anode terminal 23b and the cathode terminal 23c, and the pressed portion 31c projects outward from the end portion of the substrate 25 to form the substrate 25. The discharge member 31 is arranged so as to be inclined toward the surface side of the.

放電部材３１には、接触部３１ｂを陽極端子２３ｂ及び陰極端子２３ｃに接近する方向に付勢するばね３２（付勢部材）が取り付けられ、ばね３２は、例えば、回動軸３１ａに取り付けられるねじりコイルばねで構成される。 A spring 32 (a urging member) that urges the contact portion 31b in a direction approaching the anode terminal 23b and the cathode terminal 23c is attached to the discharge member 31, and the spring 32 is attached to, for example, a rotation shaft 31a. It consists of a coil spring.

電源装置３０の着脱動作について説明する。電源装置３０をプリンター本体２に取り付けるとき、基板２５（半田面）と交差した方向に立設されたプリンター本体２の内壁３３に電源装置３０を接近させて、放電部材３１の被押圧部３１ｃを内壁３３に押し付けた状態で電源装置３０を配置する。これにより、被押圧部３１ｃが内壁３３に押圧されて放電部材３１が回動し、放電部材３１の接触部３１ｂは、ばね３２の付勢力に抗して陽極端子２３ｂ及び陰極端子２３ｃの少なくとも一方から離間する。 The attachment / detachment operation of the power supply device 30 will be described. When the power supply device 30 is attached to the printer main body 2, the power supply device 30 is brought close to the inner wall 33 of the printer main body 2 erected in a direction intersecting the substrate 25 (solder surface), and the pressed portion 31c of the discharge member 31 is pressed. The power supply device 30 is arranged in a state of being pressed against the inner wall 33. As a result, the pressed portion 31c is pressed against the inner wall 33 to rotate the discharge member 31, and the contact portion 31b of the discharge member 31 resists the urging force of the spring 32 and at least one of the anode terminal 23b and the cathode terminal 23c. Separate from.

また、電源装置３０をプリンター本体２から取り外すとき、電源装置３０はプリンター本体２の内壁３３から離間することになる。このとき、放電部材３１の被押圧部３１ｃが内壁３３から離間するので、内壁３３による被押圧部３１ｃの押圧が解除される。そして、放電部材３１は、ばね３２によって付勢されて陽極端子２３ｂ及び陰極端子２３ｃに接近する方向に可動し、接触部３１ｂが陽極端子２３ｂ及び陰極端子２３ｃに接触する。これにより、陽極端子２３ｂ及び陰極端子２３ｃが導電性の放電部材３１を介して導通し、陽極端子２３ｂが放電部材３１及び陰極端子２３ｃを介して接地される。そのため、コンデンサ２３の残存電荷は、陽極端子２３ｂから放電部材３１及び陰極端子２３ｃを介して放電される。 Further, when the power supply device 30 is removed from the printer main body 2, the power supply device 30 is separated from the inner wall 33 of the printer main body 2. At this time, since the pressed portion 31c of the discharge member 31 is separated from the inner wall 33, the pressing of the pressed portion 31c by the inner wall 33 is released. Then, the discharge member 31 is urged by the spring 32 and moves in a direction approaching the anode terminal 23b and the cathode terminal 23c, and the contact portion 31b comes into contact with the anode terminal 23b and the cathode terminal 23c. As a result, the anode terminal 23b and the cathode terminal 23c are electrically connected to each other via the conductive discharge member 31, and the anode terminal 23b is grounded via the discharge member 31 and the cathode terminal 23c. Therefore, the residual charge of the capacitor 23 is discharged from the anode terminal 23b via the discharge member 31 and the cathode terminal 23c.

第２実施形態によれば、上記したように、プリンター１（画像形成装置）の電源装置３０において、放電部材３１は、基板２５に軸支される回動軸３１ａと、回動軸３１ａから一方に延長して形成されて回動に応じて陽極端子２３ｂ及び陰極端子２３ｃに対して接近及び離間する接触部３１ｂと、回動軸３１ａを挟んで接触部３１ｂと反対側の他方に延長して形成された被押圧部３１ｃとを備えて、回動可能に基板２５に取り付けられる。電源装置３０は、接触部３１ｂを陽極端子２３ｂ及び陰極端子２３ｃに接近する方向に付勢するばね３２（付勢部材）を更に備える。基板２５は、プリンター本体２（筐体）の内壁３３に被押圧部３１ｃを押し付けた状態でプリンター本体２に取り付けられる。そして、放電部材３１は、被押圧部３１ｃがプリンター本体２の内壁３３に押し付けられることで、ばね３２の付勢力に抗して接触部３１ｂが陽極端子２３ｂ又は陰極端子２３ｃから離間するように回動する。更に、放電部材３１は、被押圧部３１ｃをプリンター本体２の内壁３３から離間させると、ばね３２に付勢されて陽極端子２３ｂ及び陰極端子２３ｃに接触する。 According to the second embodiment, as described above, in the power supply device 30 of the printer 1 (image forming apparatus), the discharge member 31 is one of the rotating shaft 31a pivotally supported by the substrate 25 and the rotating shaft 31a. A contact portion 31b that is formed so as to be extended to and approaches and separates from the anode terminal 23b and the cathode terminal 23c according to rotation, and extends to the other side opposite to the contact portion 31b with the rotation shaft 31a in between. It is rotatably attached to the substrate 25 with the formed pressed portion 31c. The power supply device 30 further includes a spring 32 (a urging member) that urges the contact portion 31b in a direction approaching the anode terminal 23b and the cathode terminal 23c. The substrate 25 is attached to the printer main body 2 in a state where the pressed portion 31c is pressed against the inner wall 33 of the printer main body 2 (housing). Then, the discharge member 31 is rotated so that the contact portion 31b is separated from the anode terminal 23b or the cathode terminal 23c against the urging force of the spring 32 by pressing the pressed portion 31c against the inner wall 33 of the printer main body 2. Move. Further, when the pressed portion 31c is separated from the inner wall 33 of the printer main body 2, the discharge member 31 is urged by the spring 32 and comes into contact with the anode terminal 23b and the cathode terminal 23c.

これにより、電源装置３０の取り外し時において電源装置３０（基板２５）のプリンター本体２の内壁３３からの離間動作を利用する簡易な手法で、放電部材３１を陽極端子２３ｂ及び陰極端子２３ｃに接触させることができる。従って、既存の構成を利用することができ、コストを抑制すると共に、構成を簡易化することができる。 As a result, when the power supply device 30 is removed, the discharge member 31 is brought into contact with the anode terminal 23b and the cathode terminal 23c by a simple method using the operation of separating the power supply device 30 (board 25) from the inner wall 33 of the printer main body 2. be able to. Therefore, the existing configuration can be used, the cost can be suppressed, and the configuration can be simplified.

なお、上記した第２実施形態では、鈍角を構成する側の接触部３１ｂの表面が陽極端子２３ｂ及び陰極端子２３ｃに対向すると共に、被押圧部３１ｃが基板２５の表面側に傾斜するように、放電部材３１が配置され、基板２５と交差した方向に立設されたプリンター本体２の内壁３３に被押圧部３１ｃを押し付けた状態で基板２５が取り付けられる例を説明したが、本発明はこの例に限定されない。 In the second embodiment described above, the surface of the contact portion 31b on the side forming the obtuse angle faces the anode terminal 23b and the cathode terminal 23c, and the pressed portion 31c is inclined toward the surface side of the substrate 25. An example has been described in which the discharge member 31 is arranged and the substrate 25 is attached with the pressed portion 31c pressed against the inner wall 33 of the printer body 2 erected in the direction intersecting the substrate 25. Not limited to.

例えば、他の実施形態では、図７及び図８に示すように、鈍角を構成する側と反対側の接触部３１ｂの表面が陽極端子２３ｂ及び陰極端子２３ｃに対向すると共に、被押圧部３１ｃが基板２５の半田面側に傾斜するように、放電部材３１が配置されてもよい。この場合、基板２５の取付方向側のプリンター本体２の内壁３３、換言すれば、基板２５の半田面と対向するプリンター本体２の内壁３３に被押圧部３１ｃを押し付けた状態で基板２５が取り付けられる。なお、他の実施形態では、回動軸３１ａを基板２５の端部に配置する必要がなく、被押圧部３１ｃを基板２５の端部から外側に突出させる必要がない。 For example, in another embodiment, as shown in FIGS. 7 and 8, the surface of the contact portion 31b on the side opposite to the side forming the obtuse angle faces the anode terminal 23b and the cathode terminal 23c, and the pressed portion 31c is pressed. The discharge member 31 may be arranged so as to be inclined toward the solder surface side of the substrate 25. In this case, the substrate 25 is attached in a state where the pressed portion 31c is pressed against the inner wall 33 of the printer main body 2 on the mounting direction side of the substrate 25, in other words, the inner wall 33 of the printer main body 2 facing the solder surface of the substrate 25. .. In another embodiment, it is not necessary to arrange the rotating shaft 31a at the end of the substrate 25, and it is not necessary to project the pressed portion 31c outward from the end of the substrate 25.

次に、本発明の第３実施形態に係る電源装置４０について図９、図１０及び図１１を参照しながら説明する。なお、第１実施形態の電源装置１５やと同様の構成は説明を省略する。第３実施形態に係る電源装置４０において、高周波トランス２１、一次整流回路２２、コンデンサ２３及び基板２５は、第１実施形態の電源装置１５と同様の構成を有する。第３実施形態に係る電源装置４０は、第１実施形態の放電部材２４に対応する放電部材４１を備える。以下、第３実施形態の放電部材４１について、第１実施形態の放電部材２４と異なる構成を説明する。 Next, the power supply device 40 according to the third embodiment of the present invention will be described with reference to FIGS. 9, 10 and 11. The same configuration as the power supply device 15 of the first embodiment will not be described. In the power supply device 40 according to the third embodiment, the high frequency transformer 21, the primary rectifier circuit 22, the capacitor 23, and the substrate 25 have the same configurations as the power supply device 15 of the first embodiment. The power supply device 40 according to the third embodiment includes a discharge member 41 corresponding to the discharge member 24 of the first embodiment. Hereinafter, the configuration of the discharge member 41 of the third embodiment different from that of the discharge member 24 of the first embodiment will be described.

放電部材４１は、第１実施形態の放電部材２４と同様に導電性樹脂で構成され、板状の接触部４１ａと、被係合部４１ｂとを備えて一体的に形成され、基板２５の半田面上を摺動可能に設けられる。 The discharge member 41 is made of a conductive resin like the discharge member 24 of the first embodiment, and is integrally formed with a plate-shaped contact portion 41a and an engaged portion 41b, and solders the substrate 25. It is provided so as to be slidable on the surface.

基板２５の半田面には、放電部材４１を摺動可能に収容する収容部４３が設けられる。収容部４３は、例えば、コンデンサ２３の陽極端子２３ｂ及び陰極端子２３ｃに対応する位置から陽極端子２３ｂ及び陰極端子２３ｃに隣接する位置までに亘って所定の摺動方向に延長したレール状に形成される。収容部４３は、摺動方向との交差方向において接触部４１ａの両端部を収容するように構成される。また、収容部４３には、摺動方向との交差方向において中央に、摺動方向に延長したスリット４３ａが開口していて、スリット４３ａから被係合部４１ｂが露出される。 On the solder surface of the substrate 25, an accommodating portion 43 that slidably accommodates the discharge member 41 is provided. The accommodating portion 43 is formed in a rail shape extending in a predetermined sliding direction from a position corresponding to the anode terminal 23b and the cathode terminal 23c of the capacitor 23 to a position adjacent to the anode terminal 23b and the cathode terminal 23c, for example. Ru. The accommodating portion 43 is configured to accommodate both ends of the contact portion 41a in the direction intersecting the sliding direction. Further, in the accommodating portion 43, a slit 43a extending in the sliding direction is opened in the center in the intersecting direction with the sliding direction, and the engaged portion 41b is exposed from the slit 43a.

接触部４１ａは、収容部４３に収容されて、コンデンサ２３の陽極端子２３ｂ及び陰極端子２３ｃに対応する位置と陽極端子２３ｂ及び陰極端子２３ｃに隣接する位置との間を摺動可能に配置される。そして、接触部４１ａは、基板２５の半田面上を摺動することで陽極端子２３ｂ及び陰極端子２３ｃに対して接近及び離間するように可動する。 The contact portion 41a is accommodated in the accommodating portion 43, and is slidably arranged between a position corresponding to the anode terminal 23b and the cathode terminal 23c of the capacitor 23 and a position adjacent to the anode terminal 23b and the cathode terminal 23c. .. Then, the contact portion 41a moves so as to approach and separate from the anode terminal 23b and the cathode terminal 23c by sliding on the solder surface of the substrate 25.

被係合部４１ｂは、基板２５（半田面）と対向する接触部４１ａの表面に設けられ、基板２５（半田面）から離間する方向に突出して形成される。被係合部４１ｂは、接触部４１ａの摺動を妨げないように、収容部４３のスリット４３ａに緩嵌合されて露出される。なお、図＄では、被係合部４１ｂが接触部４１ａの中央に設けられる構成を例示するが、被係合部４１ｂが接触部４１ａの摺動方向の端部に設けられてもよい。 The engaged portion 41b is provided on the surface of the contact portion 41a facing the substrate 25 (solder surface), and is formed so as to project in a direction away from the substrate 25 (solder surface). The engaged portion 41b is loosely fitted and exposed in the slit 43a of the accommodating portion 43 so as not to hinder the sliding of the contact portion 41a. Although FIG. $ illustrates a configuration in which the engaged portion 41b is provided in the center of the contact portion 41a, the engaged portion 41b may be provided at the end portion of the contact portion 41a in the sliding direction.

放電部材４１には、放電部材４１を陽極端子２３ｂ及び陰極端子２３ｃに接近する方向に付勢するばね４２（付勢部材）が取り付けられる。なお、図＄では、ばね４２が被係合部４１ｂに取り付けられる構成を例示するが、ばね４２は接触部４１ａに取り付けられてもよい。ばね４２は、例えば、圧縮コイルばねで構成され、伸長する方向に付勢力を有する。 A spring 42 (a urging member) that urges the discharge member 41 in a direction approaching the anode terminal 23b and the cathode terminal 23c is attached to the discharge member 41. Although FIG. $ illustrates a configuration in which the spring 42 is attached to the engaged portion 41b, the spring 42 may be attached to the contact portion 41a. The spring 42 is composed of, for example, a compression coil spring and has an urging force in the extending direction.

電源装置４０の着脱動作について説明する。電源装置４０をプリンター本体２に取り付けるとき、基板２５（半田面）と交差した方向に立設されたプリンター本体２の係合部４４に放電部材４１の被係合部４１ｂを係合させる。例えば、被係合部４１ｂは、係合部４４と係合する被係合面をばね４２とは反対側に有する。そして、被係合部４１ｂを係合部４４に係合したまま、ばね４２の付勢力に抗して放電部材４１を摺動させることで、放電部材４１の接触部４１ａは、ばね４２の付勢力に抗して陽極端子２３ｂ及び陰極端子２３ｃの少なくとも一方から離間する。 The attachment / detachment operation of the power supply device 40 will be described. When the power supply device 40 is attached to the printer main body 2, the engaged portion 41b of the discharge member 41 is engaged with the engaging portion 44 of the printer main body 2 which is erected in the direction intersecting the substrate 25 (solder surface). For example, the engaged portion 41b has an engaged surface that engages with the engaging portion 44 on the side opposite to the spring 42. Then, while the engaged portion 41b is engaged with the engaging portion 44, the discharge member 41 is slid against the urging force of the spring 42, so that the contact portion 41a of the discharge member 41 is attached to the spring 42. It is separated from at least one of the anode terminal 23b and the cathode terminal 23c against the force.

また、電源装置４０をプリンター本体２から取り外すとき、電源装置４０はプリンター本体２の係合部４４から離間することになる。このとき、放電部材４１の被係合部４１ｂと係合部４４との係合が解除されるので、放電部材４１は、ばね４２によって付勢されて陽極端子２３ｂ及び陰極端子２３ｃに接近する方向に可動し、接触部４１ａが陽極端子２３ｂ及び陰極端子２３ｃに接触する。これにより、陽極端子２３ｂ及び陰極端子２３ｃが導電性の放電部材４１を介して導通し、陽極端子２３ｂが放電部材４１及び陰極端子２３ｃを介して接地される。そのため、コンデンサ２３の残存電荷は、陽極端子２３ｂから放電部材４１及び陰極端子２３ｃを介して放電される。 Further, when the power supply device 40 is removed from the printer main body 2, the power supply device 40 is separated from the engaging portion 44 of the printer main body 2. At this time, since the engagement between the engaged portion 41b and the engaging portion 44 of the discharge member 41 is released, the discharge member 41 is urged by the spring 42 and approaches the anode terminal 23b and the cathode terminal 23c. The contact portion 41a comes into contact with the anode terminal 23b and the cathode terminal 23c. As a result, the anode terminal 23b and the cathode terminal 23c are electrically connected to each other via the conductive discharge member 41, and the anode terminal 23b is grounded via the discharge member 41 and the cathode terminal 23c. Therefore, the residual charge of the capacitor 23 is discharged from the anode terminal 23b via the discharge member 41 and the cathode terminal 23c.

第３実施形態によれば、上記したように、プリンター１（画像形成装置）の電源装置４０において、放電部材４１は、陽極端子２３ｂ及び陰極端子２３ｃに対して接近する方向及び離間する方向に摺動可能に設けられる。電源装置４０は、放電部材４１を陽極端子２３ｂ及び陰極端子２３ｃに接近する方向に付勢するばね４２（付勢部材）を更に備える。そして、基板２５は、ばね４２の付勢力に抗して放電部材４１を陽極端子２３ｂ及び陰極端子２３ｃの少なくとも一方から離間した状態で、放電部材４１をプリンター本体２（筐体）の係合部４４に係合させて、プリンター本体２に取り付けられる。放電部材４１は、係合部４４による係合が解除されると、ばね４２に付勢されて陽極端子２３ｂ及び陰極端子２３ｃに接触する According to the third embodiment, as described above, in the power supply device 40 of the printer 1 (image forming apparatus), the discharge member 41 slides in the direction of approaching and away from the anode terminal 23b and the cathode terminal 23c. It is provided so that it can be moved. The power supply device 40 further includes a spring 42 (a urging member) that urges the discharge member 41 in a direction approaching the anode terminal 23b and the cathode terminal 23c. Then, in the substrate 25, the discharge member 41 is separated from at least one of the anode terminal 23b and the cathode terminal 23c against the urging force of the spring 42, and the discharge member 41 is engaged with the printer main body 2 (housing). It is engaged with 44 and attached to the printer main body 2. When the engagement portion 44 disengages the discharge member 41, the discharge member 41 is urged by the spring 42 and comes into contact with the anode terminal 23b and the cathode terminal 23c.

これにより、電源装置４０の取り外し時において電源装置４０（基板２５）のプリンター本体２の係合部４４からの離間動作を利用する簡易な手法で、放電部材４１を陽極端子２３ｂ及び陰極端子２３ｃに接触させることができる。また、放電部材４１を摺動させるように収容するため、放電部材４１を保護することもできる。 As a result, when the power supply device 40 is removed, the discharge member 41 is attached to the anode terminal 23b and the cathode terminal 23c by a simple method of utilizing the separation operation of the power supply device 40 (board 25) from the engaging portion 44 of the printer main body 2. Can be contacted. Further, since the discharge member 41 is slidably accommodated, the discharge member 41 can be protected.

本実施形態では、モノクロのプリンター１に本発明の構成を適用する場合について説明したが、他の異なる実施形態では、カラープリンター、複写機、ファクシミリ、複合機等の他の画像形成装置に本発明の構成を適用することも可能である。 In the present embodiment, the case where the configuration of the present invention is applied to the monochrome printer 1 has been described, but in other different embodiments, the present invention is applied to other image forming devices such as color printers, copiers, facsimiles, and multifunction devices. It is also possible to apply the configuration of.

１プリンター（画像形成装置）
２プリンター本体（筐体）
６画像形成部
１５電源装置
１５ａ一次側回路
１５ｂ二次側回路
２０交流電源
２１高周波トランス（変圧器）
２１ａ一次コイル
２１ｂ二次コイル
２２一次整流回路
２３コンデンサ
２３ｂ陽極端子
２３ｃ陰極端子
２４放電部材
２４ａ回動軸
２４ｂ接触部
２４ｃ被押圧部
２５基板
２６取付部
２７ビス（締結部材）
２８ばね（付勢部材）
３０電源装置
３１放電部材
３１ａ回動軸
３１ｂ接触部
３１ｃ被押圧部
３２ばね（付勢部材）
３３内壁
４０電源装置
４１放電部材
４１ａ接触部
４１ｂ被係合部
４２ばね（付勢部材）
４４係合部 1 Printer (image forming device)
2 Printer body (housing)
6 Image forming unit 15 Power supply device 15a Primary side circuit 15b Secondary side circuit 20 AC power supply 21 High frequency transformer (transformer)
21a Primary coil 21b Secondary coil 22 Primary rectifier circuit 23 Capacitor 23b Anode terminal 23c Cathode terminal 24 Discharge member 24a Rotating shaft 24b Contact part 24c Pressed part 25 Board 26 Mounting part 27 Screw (fastening member)
28 Spring (biasing member)
30 Power supply device 31 Discharge member 31a Rotating shaft 31b Contact part 31c Pressed part 32 Spring (urging member)
33 Inner wall 40 Power supply device 41 Discharge member 41a Contact part 41b Engagement part 42 Spring (biasing member)
44 Engagement part

Claims

A transformer that converts the input voltage input to the primary circuit into the output voltage output from the secondary circuit,
A capacitor that smoothes the input voltage in the primary circuit,
The transformer and the substrate on which the capacitor is provided, and
A discharge member that is made of conductive resin and moves when the substrate is attached to or detached from the housing.
With
The discharge member is separated from the anode terminal or the cathode terminal of the capacitor when the substrate is attached to the housing, and comes into contact with the anode terminal and the cathode terminal when the substrate is removed from the housing. A power supply device that is movable so as to conduct the anode terminal and the cathode terminal.

A fastening member that fastens the board to the mounting portion of the housing,
Further provided with the anode terminal and an urging member for urging the discharge member in a direction approaching the cathode terminal.
The fastening member is fastened through the substrate and the mounting portion, and the fastening member penetrating the mounting portion attaches the discharge member to the anode terminal and the cathode against the urging force of the urging member. Press in the direction away from the terminal,
The power supply device according to claim 1, wherein the discharge member is urged by the urging member to come into contact with the anode terminal and the cathode terminal when the pressing by the fastening member is released.

The discharge member is formed so as to extend from the rotation shaft to one side with a rotation shaft pivotally supported by the substrate, and approach and separate from the anode terminal and the cathode terminal according to the rotation. A portion and a pressed portion formed so as to extend to the other side opposite to the contact portion with the rotating shaft interposed therebetween are provided and rotatably attached to the substrate.
Further provided with an urging member for urging the contact portion in a direction approaching the anode terminal and the cathode terminal.
The substrate is attached to the housing in a state where the pressed portion is pressed against the inner wall of the housing.
When the pressed portion is pressed against the inner wall of the housing, the discharge member rotates so that the contact portion is separated from the anode terminal or the cathode terminal against the urging force of the urging member. And
The first aspect of the present invention is characterized in that, when the pressed portion is separated from the housing, the discharge member is urged by the urging member and comes into contact with the anode terminal and the cathode terminal. Power supply.

The discharge member is slidably provided in a direction approaching and away from the anode terminal and the cathode terminal.
Further provided with an urging member for urging the discharge member in a direction approaching the anode terminal and the cathode terminal.
The substrate engages the discharge member with the engaging portion of the housing in a state where the discharge member is separated from the anode terminal or the cathode terminal against the urging force of the urging member. Attached to the housing,
The power supply device according to claim 1, wherein the discharge member is urged by the urging member and comes into contact with the anode terminal and the cathode terminal when the engagement by the engaging portion is released. ..

The power supply device according to any one of claims 1 to 4.
An image forming apparatus including an image forming section for forming an image on paper as a load section from which the output voltage is output.