WO2013185584A1 - 电气设备 - Google Patents

电气设备 Download PDF

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Publication number
WO2013185584A1
WO2013185584A1 PCT/CN2013/077031 CN2013077031W WO2013185584A1 WO 2013185584 A1 WO2013185584 A1 WO 2013185584A1 CN 2013077031 W CN2013077031 W CN 2013077031W WO 2013185584 A1 WO2013185584 A1 WO 2013185584A1
Authority
WO
WIPO (PCT)
Prior art keywords
capacitor
circuit board
terminal
electrical device
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2013/077031
Other languages
English (en)
French (fr)
Inventor
陈景
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Toshiba Inverter Europe SAS
Original Assignee
Schneider Toshiba Inverter Europe SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Toshiba Inverter Europe SAS filed Critical Schneider Toshiba Inverter Europe SAS
Priority to EP13803427.7A priority Critical patent/EP2851913A4/en
Priority to JP2015516420A priority patent/JP2015527727A/ja
Priority to US14/407,402 priority patent/US20150144387A1/en
Publication of WO2013185584A1 publication Critical patent/WO2013185584A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • H01G2/06—Mountings specially adapted for mounting on a printed-circuit support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • H01G2/06—Mountings specially adapted for mounting on a printed-circuit support
    • H01G2/065—Mountings specially adapted for mounting on a printed-circuit support for surface mounting, e.g. chip capacitors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/111—Pads for surface mounting, e.g. lay-out
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
    • H05K3/325—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by abutting or pinching; Mechanical auxiliary parts therefor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters
    • H05K7/14322—Housings specially adapted for power drive units or power converters wherein the control and power circuits of a power converter are arranged within the same casing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/0302—Properties and characteristics in general
    • H05K2201/0311—Metallic part with specific elastic properties, e.g. bent piece of metal as electrical contact
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/03—Conductive materials
    • H05K2201/0302—Properties and characteristics in general
    • H05K2201/0314—Elastomeric connector or conductor, e.g. rubber with metallic filler
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/06—Thermal details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10015—Non-printed capacitor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10287—Metal wires as connectors or conductors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10325—Sockets, i.e. female type connectors comprising metallic connector elements integrated in, or bonded to a common dielectric support
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10409—Screws
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10431—Details of mounted components
    • H05K2201/10606—Permanent holder for component or auxiliary printed circuits mounted on a printed circuit board [PCB]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10621—Components characterised by their electrical contacts
    • H05K2201/10651—Component having two leads, e.g. resistor, capacitor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10742—Details of leads
    • H05K2201/1075—Shape details
    • H05K2201/1081—Special cross-section of a lead; Different cross-sections of different leads; Matching cross-section, e.g. matched to a land
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10742—Details of leads
    • H05K2201/1075—Shape details
    • H05K2201/10818—Flat leads
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
    • H05K2201/2018—Presence of a frame in a printed circuit or printed circuit assembly
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
    • H05K2201/2036—Permanent spacer or stand-off in a printed circuit or printed circuit assembly
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
    • H05K3/301—Assembling printed circuits with electric components, e.g. with resistors by means of a mounting structure
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
    • H05K3/4007—Surface contacts, e.g. bumps
    • H05K3/4015—Surface contacts, e.g. bumps using auxiliary conductive elements, e.g. pieces of metal foil, metallic spheres
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers

Definitions

  • the present invention relates to an electrical device, and more particularly to a structure in which a capacitor is mounted in an electrical device. Background technique
  • Capacitors are a common electronic component in electrical equipment, especially in electrical equipment such as variable frequency drives, using multiple bus capacitors. These bus capacitors are usually soldered to the bus board and are therefore difficult to disassemble and replace.
  • capacitors are distributed at different locations in the electrical equipment and generate a significant amount of heat when the electrical equipment is in operation.
  • a forced cooling device such as a fan is used.
  • the capacitor will also heat up during operation. The accumulation of this heat can result in damage to the capacitor or a reduction in life.
  • the capacitor Since the capacitor is usually soldered to the circuit board, especially for the user of the electrical device, the capacitor cannot be easily replaced, and the damage of the capacitor results in having to replace the entire electrical device, resulting in unnecessary waste. Since the life of other components of electrical equipment is usually longer than the life of a capacitor, the life of the entire electrical equipment is determined by the capacitor.
  • an object of the present invention is to provide a novel capacitor mounting structure by which a capacitor can be easily mounted on an electrical device and easily from the electrical
  • the device is disassembled, so that when the capacitor is damaged, it can be easily replaced, prolonging the life of the entire electrical device, and thus reducing the cost of the electrical device.
  • an electrical apparatus comprising a circuit board and a capacitor mounted on the circuit board, wherein the capacitor is detachably mounted on the circuit board.
  • the capacitor can be easily detached from the circuit board, when one of the capacitors is damaged, the damaged capacitor can be easily replaced with a new one, avoiding the damage of one capacitor in the prior art.
  • the entire electrical equipment is discarded or shut down for maintenance, thus saving costs.
  • the electrical device further includes a housing having an opening at a position corresponding to the capacitor and a hatch that can open and close the opening.
  • the opening for replacing the capacitor is specifically formed on the casing, the replacement operation of the capacitor is further facilitated.
  • the two pins of the capacitor are disposed on a bottom surface of the capacitor opposite to the circuit board, and two connection terminals respectively detachably connected to the pins of the capacitor are disposed on the circuit board, and The capacitors are mounted from top to bottom onto the board and electrically connected.
  • the pins of the capacitor are in the form of tabs extending from the bottom surface of the capacitor, and the connection terminals on the board are in the form of resilient clamping terminals.
  • This pin form facilitates the electrical connection between the pins of the capacitor and the terminals on the board.
  • one of the pins of the capacitor is a cylindrical terminal extending from a bottom surface of the capacitor, the inner circumference or the outer circumference of the cylindrical terminal is threaded, and the other pin is a capacitor.
  • a columnar terminal projecting at a position of a center of the cylindrical terminal on a bottom surface, one of the connection terminals on the circuit board being cylindrical, and having a cylindrical terminal capable of being coupled to the capacitor on an outer circumference or an inner circumference
  • the meshing threads, and the other of the connection terminals on the circuit board is a wiring track or an elastic terminal such as an elastic piece disposed on the circuit board at the center of the circumferential connection terminal.
  • a sleeve having an inner peripheral shape substantially the same as a peripheral shape of the body of the capacitor to guide the capacitor to the circuit board.
  • the mounting and dismounting of the capacitor can be further facilitated by providing a sleeve as a guide.
  • a step is provided on the sleeve to determine an insertion position of the capacitor.
  • the electrical device may comprise an adapter element detachably mounted on the circuit board and the capacitor mounted on the adapter element.
  • the switching element has two pins disposed on a bottom surface of the switching element opposite to the circuit board, and the two pins of the switching element are respectively on the one hand and the two pins of the capacitor mounted thereon
  • the connections are detachably connected to the two connection terminals provided on the circuit board, respectively, to electrically connect the capacitor to the circuit board.
  • the pins of the switching element are in the form of tabs extending from the bottom surface of the capacitor, and the connecting terminals on the board are in the form of resilient clamping terminals.
  • one of the pins of the adapter element is a cylindrical terminal extending from the bottom surface of the adapter element, the inner circumference or the outer circumference of the cylindrical terminal being threaded, and the other
  • the pin is a columnar terminal projecting from a position of the center of the cylindrical terminal on the bottom surface of the adapter element
  • one of the connection terminals on the circuit board is cylindrical, and has a peripheral or inner circumference capable of The cylindrical terminal of the capacitor engages with a thread
  • the other of the connection terminals on the circuit board is a wiring track or an elastic terminal provided on the circuit board at the center of the circumferential connection terminal.
  • a sleeve having an inner peripheral shape substantially the same as a peripheral shape of the body of the adapter member to guide the adapter member to the circuit board.
  • a step is provided on the sleeve to determine an insertion position of the adapter member.
  • FIG. 1 is a perspective view showing a variable frequency drive as an example of an electric device after removing a casing
  • FIG. 2 is a perspective view showing the variable frequency drive shown in FIG. 1;
  • Figure 3 is a perspective view showing a state in which the variable frequency drive shown in Figure 2 is opened when a closed capacitor-like cover is opened;
  • FIG. 4 is a perspective view showing a capacitor case in which a capacitor is mounted to a variable frequency drive
  • FIG. 5 is a schematic perspective view showing one embodiment of a capacitor mounting structure
  • FIG. 6 is a view showing a capacitor mounting structure shown in FIG. A schematic perspective view after installation of the capacitor
  • Figure 7 is a half cross-sectional view showing Figure 6 to show a capacitor mounting structure
  • FIG. 8 is an enlarged plan view of a portion surrounded by a circle A in Figure 7;
  • 9 is a schematic perspective view showing another embodiment of a capacitor mounting structure.
  • FIG. 10 is a schematic perspective view showing the capacitor mounting structure of FIG. 9 after capacitor mounting.
  • FIG. 11 is a half cross-sectional view showing FIG. To show the capacitor mounting structure; and
  • FIG. 12 is an enlarged view of a portion surrounded by the circle B in FIG. detailed description
  • variable frequency drive is taken as an example of an electric device, but it is to be noted that the present invention is not limited thereto, but can be applied to various electric devices including capacitors.
  • the variable frequency drive 100 of the present invention includes a housing 110 and a base portion 120 in which various electronic components including a capacitor 130 are disposed, and by the housing 110. cover. At the bottom of the base portion 120, a fan 140 is provided to draw outside cold air into the variable frequency drive 100 for cooling various electronic devices.
  • a plurality of capacitors 130 are disposed on the same side of the susceptor and detachably mounted to the circuit board 160 (the mounting structure of the capacitor will be described later in detail), and when the housing 110 is mounted to the pedestal portion 120, A capacitor compartment housing a plurality of capacitors 130 is formed.
  • a portion of the housing 110 above the capacitor is formed with an opening 150, and a cover 152 as a part of the housing 110 is openably and closably disposed to the opening 150 so that It is easy to open when replacing the capacitor 130.
  • Such openable and closable structures may take the form of snap-on, articulated, sliding, etc., which are well known in the art and, therefore, will not be described in detail herein.
  • a heat dissipation hole is formed in a side wall of a portion of the housing 110 corresponding to the capacitor chamber to discharge hot air.
  • replacement of the capacitor 130 can be accomplished by opening the hatch 152 and removing the damaged capacitor 130 from above and mounting the new capacitor 130 onto the board.
  • the mounting structure of the capacitor is designed such that the capacitor can be detachably coupled to and positioned on the circuit board 160, thereby facilitating the disassembly and mounting of the capacitor 130.
  • the capacitor 130 is substantially cylindrical, and two pins 131 and 131 are disposed on the bottom surface thereof. Two pins 131 vertically protrude from the bottom surface, and the pin 131 is a connecting piece. Shape Style.
  • On the circuit board 160 there are provided corresponding connection terminals in the form of elastic clamping terminals 161 and 161 which are routed through a circuit board (not shown) and corresponding other electronics The devices are connected.
  • a sleeve 162 that includes two portions 1621 and 1622 of different inner diameters, wherein the inner diameter of the large inner diameter portion 1621 is substantially the same as the outer diameter of the capacitor 130, thereby having a large inner diameter
  • a step portion is formed between the portion 1621 and the small inner diameter portion 1622.
  • the capacitor 130 When the capacitor 130 is mounted, the capacitor 130 is inserted vertically downward from the opening 150 of the capacitor chamber into the sleeve 162 such that the pin 131 of the capacitor 130 is inserted into the elastic clamping terminal 161 while the body of the capacitor 130 is inserted into the sleeve.
  • the upper connection terminals 161 are electrically connected to each other and the large inner diameter portion 1621 of the sleeve 162 plays a supporting positioning role for the capacitor 130, and on the other hand, since the step portion functions as a stopper, the force due to the downward force is prevented from being excessively large. The problem of damaging the pin 131 and the connection terminal 161.
  • guiding ribs or guiding grooves may be formed on the sleeve 162, and correspondingly formed on the cylindrical body of the capacitor 130. Guide groove or rib.
  • the sleeve 162 may not be formed on the circuit board, but may be formed on other components in the vicinity of the capacitor, such as on the inner side wall of the housing 120.
  • the stop member can be formed separately on the circuit board 160 without having to incorporate the stop member into the sleeve 162.
  • the second embodiment is different from the first embodiment in that the sleeve 16 2 is eliminated, and one connection terminal 161 on the circuit board 160 is cylindrical, and the other connection terminal (not shown) is formed in the circuit.
  • the inner circumference of the connection terminal 161 is formed with an internal thread.
  • two pins 131a and 131b of the capacitor 130 are formed on the bottom end of the capacitor, and one outer lead 13 lb is formed in a cylindrical shape on the outer circumference of the cylindrical outer lead 13 lb.
  • the face is formed with an external thread
  • the inner lead 131a is formed at the inner center position of the cylindrical outer pin 131b, and protrudes outward from the bottom surface of the capacitor 130 to a position substantially the same as or slightly higher than the height of the outer pin.
  • the outer lead 131b is engaged with the cylindrical connection terminal 161 on the circuit board 160 and tightened, while the inner lead 131a abuts on the connection terminal formed on the circuit board.
  • the connection terminals on the circuit board may be formed as slight protrusions on the circuit board, or in the form of elastic sheets.
  • the outer pin 131b of the capacitor 130 is described above as having an external thread, it may have an internal thread, and the terminal 161 on the corresponding circuit board has an external thread, which achieves a similar effect.
  • the inner pin is disposed at the center of the circle surrounded by the outer pin, it is not necessary that the inner pin is located at the center of the circle, and the inner pin may be off-center. Just ensure the electrical insulation distance between the inner and outer pins.
  • a corresponding guiding and positioning mechanism can likewise be provided.
  • a large diameter sleeve can be additionally provided on the outside of the terminal 161, similar to the sleeve 162 in the first embodiment, thereby Capacitor 130 acts as a guide and stop.
  • the damaged capacitor 130 when one of the capacitors 130 is damaged, the damaged capacitor 130 can be easily removed and replaced with a new one. In this way, the problem of the prior art equipment being discarded or shut down for refurbishment due to damage of one of the capacitors in the prior art is avoided.
  • the pin form of the capacitor differs from the pin form of the capacitor in the prior art in the above embodiments, this can be made by the capacitor manufacturer as required when customizing the capacitor, and a turn can be designed.
  • the adapter element has a form similar to that of the various embodiments, and an existing capacitor can be directly mounted to the adapter element to effect switching in the form of a terminal.
  • the switching element is in the shape of the capacitor 130 in the first and second embodiments, and a capacitor of the prior art can be mounted therein and appropriately fixed, and the pin of the prior art capacitor is connected through an internal wiring connection or the like. It is connected to the pins of the switching element, so that if the switching element is additionally prepared, any modification of the prior art capacitor can be avoided, achieving cost saving.
  • the shape of the capacitor 130 need not be a cylindrical shape, but may be any shape.
  • the position of the capacitor 130 does not have to be on the same side, as long as the corresponding opening and the openable cover can be set according to the specific position of the capacitor 130. . It is also possible to provide the opening and the cover only at the capacitor 130 which is easily damaged, for example, at the capacitor 130 where the heat dissipation condition is the worst, thereby facilitating replacement of the easily damaged capacitor 130. Even if it is not necessary to provide an opening, the housing of the electric device can be removed at the time of replacement, and a similar effect can be achieved by directly replacing it.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)

Description

电气设备 技术领域
本实用新型涉及一种电气设备, 并尤其涉及电气设备中安装电容器的结 构。 背景技术
电容器是电气设备中的一种常用电子元器件,尤其是在诸如变频驱动器 的电气设备中, 采用多个总线电容器。 这些总线电容器通常采用焊接等方式 固定到总线电路板上, 并因此很难拆卸和更换。
通常, 电容器分布在电气设备中的不同位置处, 在电气设备工作时, 会 产生大量的热量。 为了达到将这些热量散出到电气设备外侧的目的, 采用风 扇等强制冷却装置。 但是, 由于电容器的位置通常远离冷空气的流经路径, 导致一些电容器得不到艮好的降温。 同时, 电容器在工作时也会发热。 这些 热量的累积会导致电容器损坏或者寿命减少。
由于电容器通常是焊接在电路板上, 尤其对于电气设备的使用者来说, 无法方便地更换电容器, 电容器的损坏就导致不得不更换整个电气设备, 造 成不必要的浪费。 由于电气设备的其他元器件的寿命通常比电容器的寿命 长, 导致整个电气设备的寿命由电容器来决定。
为了克服这种问题, 在现有技术中, 提出了采用耐热性高或者寿命长的 电容器,但是,这种耐热性高和寿命长的电容器的成本明显高于普通电容器, 导致整个电气设备的成本增高。
因此, 存在一种对电容器的安装结构进行改进的需要。 实用新型内容
本实用新型是鉴于上述现有技术的问题而提出, 并且本实用新型的目的 在于提供一种新型的电容器安装结构, 通过该安装结构, 电容器可以容易地 安装于电气设备上并容易地从该电气设备上拆卸, 进而在电容器发生损坏 时, 可以方便地进行更换, 延长了整个电气设备的寿命, 并因此降低了电气 设备的成本。 根据本实用新型的一个方面, 提供了一种电气设备, 该电气设备包括电 路板和安装在电路板上的电容器, 其特征在于, 所述电容器可拆卸地安装在 该电路板上。
利用本实用新型, 由于电容器可以方便地从电路板上拆卸, 因此, 在其 中一个电容器损坏时, 可以容易地用新的电容器更换被损坏的电容器, 避免 了现有技术中由于一个电容器损坏而导致的整个电气设备被废弃或者停机 检修, 因此, 节省了成本。
所述电气设备还包括壳体, 所述壳体在与电容器相对应的位置处形成有 开口以及可打开和封闭该开口的舱盖。
由于在壳体上专门形成有更换电容器的开口, 因此, 进一步方便了对电 容器的更换操作。
优选的是, 所述电容器的两个引脚设置在电容器中的与电路板相对的底 面上, 而在电路板上设置有分别与所述电容器的引脚可拆卸连接的两个连接 端子, 将电容器从上到下安装到电路板上并实现二者的电连接。
作为一个实施例,所述电容器的引脚为从电容器的底面伸出的连接片的 形式, 而所述电路板上的连接端子为弹性夹紧端子的形式。
利用这种引脚形式, 可以方便电容器的引脚和电路板上的端子之间的电 连接。
作为另一个实施例, 所述电容器的其中一个引脚为从电容器的底面伸出 的圆筒状端子, 该圓筒状端子的内周或外周带有螺纹, 而另一引脚为从电容 器的底面所述圓筒状端子中心的位置处伸出的柱状端子, 所述电路板上的连 接端子中的一个为圓筒状, 并且在外周或内周具有能够与所述电容器的圓筒 状端子相啮合的螺纹,并且所述电路板上的连接端子中的另一个为设置在所 述电路板上、所述圓周状连接端子中心的布线轨迹或者弹性端子,如弹性片。
在所述电路板上还设置有套筒, 该套筒的内周形状与电容器的主体的外 周形状基本上相同, 以引导电容器安装到电路板上。
通过设置作为导引件的套筒, 可以进一步方便电容器的安装和拆卸。 所述套筒上设置有台阶部, 以确定电容器的插入位置。
作为一种替代形式, 所述电气设备可以包括一个转接元件, 该转接元件 可拆卸地安装在所述电路板上, 而所述电容器安装在该转接元件上。
利用转接元件, 可以不必对现有的电容器的端子形式进行修改, 由此, 降低了产品的成本并提高了本实用新型的通用性。
所述转接元件具有设置在转接元件的与电路板相对的底面上的两个引 脚, 所述转接元件的两个引脚一方面分别与其上所安装的电容器的两个引脚 相连接, 另一方面分別与电路板上设置的两个连接端子可拆卸地相连接, 以 将电容器与电路板电连接。
作为一个实施例,所述转接元件的引脚为从电容器的底面伸出的连接片 的形式, 而所述电路板上的连接端子为弹性夹紧端子的形式。
作为另一个实施例, 所述转接元件的其中一个引脚为从转接元件的所述 底面伸出的圆筒状端子, 该圆筒状端子的内周或外周带有螺纹, 而另一引脚 为从转接元件的底面所述圆筒状端子中心的位置处伸出的柱状端子,所述电 路板上的连接端子中的一个为圆筒状, 并且在外周或内周具有能够与所述电 容器的圆筒状端子相啮合的螺紋, 并且所述电路板上的连接端子中的另一个 为设置在所述电路板上、 所述圓周状连接端子中心的布线轨迹或者弹性端 子。
在所述电路板上还设置有套筒, 该套筒的内周形状与转接元件的主体的 外周形状基本上相同, 以引导转接元件安装到电路板上。
所述套筒上设置有台阶部, 以确定转接元件的插入位置。 附囹说明
本实用新型的上述和其他特征、 目的和优点将通过下面参照附图对本实 用新型优选实施方式的详细描述中变得更清楚, 图中:
图 1是示出作为电气设备的示例的变频驱动器去除外壳后的透视图; 图 2是示出图 1所示的变频驱动器的透视图;
图 3是示出图 2所示的变频驱动器在封闭电容器般的盖打开时的状态的 透视图;
图 4是示出将电容器安装到变频驱动器的电容器舱的透视图; 图 5是示出将电容器安装结构的一个实施例的示意性透视图; 图 6是示出图 5所示的电容器安装结构在电容器安装后的示意性透视 图;
图 7是示出图 6的半剖视图, 以显示电容器安装结构;
图 8是图 7中圆圏 A所围绕部分的放大视图; 图 9是示出电容器安装结构的另一个实施例的示意性透视图; 图 10是示出图 9中的电容器安装结构在电容器安装之后的示意性透视 图 11是示出图 10的半剖视图, 以显示电容器安装结构; 以及 图 12是图 11中圓圏 B所围绕的部分的放大视图。 具体实施方式
下面, 参照附图 1至 12, 详细描述根据本实用新型的优选实施方式。 在 下面的描述中, 以变频驱动器作为电气设备的示例, 但是要指出的是, 本实 用新型并不局限于此, 而是可以应用于各种包括电容器的电气设备。
如图 1至 4所示, 采用本实用新型的变频驱动器 100包括壳体 110和基 座部分 120,包括电容器 130在内的各种电子器件设置在该基座部分 120内, 并且由壳体 110覆盖。 在基座部分 120的底部, 设置有风扇 140, 以将外界 冷空气吸入到变频驱动器 100内, 用于冷却各种电子器件。 多个电容器 130 设置在基座的相同一侧上、 并可拆卸地安装到电路板 160上(电容器的安装 结构将在后面详细描述), 并且在壳体 110安装到基座部分 120上时, 构成 一个容纳多个电容器 130的电容器舱。 该电容器抢的顶部上, 即, 壳体 110 中的位于电容器之上的部分形成有开口 150, 并且作为壳体 110的一部分的 般盖 152可打开和可关闭地设置到该开口 150上, 以便在更换电容器 130时 方便打开。 这种可打开和可关闭的结构可以采用扣接式、 铰接式、 滑动式等 多种形式, 这些结构是本领域公知的结构, 因此, 在此不再详细描述。
在壳体 110的对应于电容器舱的部分的侧壁上形成有散热孔, 以将热空 气排出。
在其中一个电容器 130发生故障时, 可以通过打开舱盖 152, 并且从上 面取出损坏的电容器 130, 并将新的电容器 130安装到电路板上, 由此实现 了电容器 130的更换。
根据本实用新型, 电容器的安装结构设计成电容器可以可拆卸地与电路 板 160连接并定位于其上, 由此, 便于电容器 130的拆卸和安装。 下面, 参 照图 5至图 8 , 详细描述电容器安装结构的第一实施例。
如图 5至图 8所示, 电容器 130大致为圆柱形, 在其底面上设置有两个 引脚 131和 131 , 两个引脚 131从该底面竖直伸出, 该引脚 131为连接片形 式。 在电路板 160上, 设置有相应的连接端子, 该连接端子为弹性夹紧端子 161和 161形式, 这两个弹性夹紧端子 161经过电路板上的布线(未示出) 与相应的其他电子器件相连接。 在电路板 160上还固定有套筒 162, 该套筒 162包括两个不同内径的部分 1621和 1622,其中大内径部分 1621的内径基 本上与电容器 130的外径相同,由此,在大内径部分 1621和小内径部分 1622 之间形成台阶部。
在安装电容器 130时,将电容器 130从电容器舱的开口 150对准套筒 162 竖直向下插入, 使得电容器 130的引脚 131插入到弹性夹紧端子 161中, 同 时电容器 130的主体插入到套筒 162的大内径部分 1621内, 并且直到电容 器 130的底端面抵靠在大内径部分 1621和小内径部分 1622之间形成的台阶 部为止, 由此一方面确保了电容器的引脚 131和电路板上的连接端子 161彼 此电连接并且套筒 162的大内径部分 1621对电容器 130起到支撑定位作用, 另一方面, 由于台阶部起到止挡部的作用, 防止了由于向下用力过大而损坏 引脚 131和连接端子 161的问题。
为了便于电容器 130的引脚 131与电路板上的端子 161相互对准,在套 筒 162上可以形成有导引肋或导引槽, 而相应地在电容器 130的圓柱形主体 上形成相配合的导引槽或肋。
另外, 套筒 162可以不形成在电路板上, 而是可以形成在电容器附近的 其他部件上, 如形成在壳体 120的内侧壁上。 另外, 也可以在电路板 160上 单独形成止挡件, 而不必将止挡件结合到套筒 162内。
下面,参照图 9至图 12,详细描述根据本实用新型的电容器安装结构的 第二实施例。
第二实施例与第一实施例的不同之处在于: 取消了套筒 162, 且电路板 160上的一个连接端子 161为圆筒状, 而另一个连接端子(未示出)形成在 电路板上、由套筒围绕的区域的中心。连接端子 161的内圓周形成有内螺纹。 如图 12所示, 电容器 130的两个引脚 131a和 131b形成在电容器的底端上, 并且一个外引脚 13 lb形成为圓筒状,在该圓筒状的外引脚 13 lb的外周面形 成有外螺纹, 而内引脚 131a形成在圓筒状外引脚 131b的内部中心位置, 并 且从电容器 130的底面向外突出到与外引脚高度基本上相同或稍高的位置。 在安装电容器 130时, 外引脚 131b与电路板 160上的圓筒状连接端子 161 啮合, 并拧紧, 与此同时, 内引脚 131a抵靠在电路板上形成的连接端子上。 为了保证内引脚 131a与电路板上的端子良好接触, 电路板上的连接端子可 以在电路板上形成为略微突起, 或者是弹性片形式。
另外, 尽管上面描述了电容器 130的外引脚 131b具有外螺纹, 但是也 可以具有内螺纹, 而相应的电路板上的端子 161具有外螺纹, 这都会实现类 似的效果。 另外, 尽管在上面的描述中, 内引脚设置在外引脚所围绕的圆形 的中心, 但是, 实际上内引脚位于该圓形的中心并非是必要的, 内引脚可以 偏离中心设置, 只要保证内引脚和外引脚之间的电绝缘距离即可。
为了引导和定位电容器 130, 同样可以设置相应的导引和定位机构, 例 如可以在端子 161的外侧另外设置一个大直径套筒,类似于第一实施例中的 套筒 162, 由此起到对电容器 130引导和止挡的作用。
利用上面的各实施例, 在其中一个电容器 130损坏时, 可以方便地将损 坏的电容器 130取下, 并且用新的电容器更换。 这样, 避免了现有技术中由 于其中一个电容器损坏而导致整个设备废弃或者停机整修的问题。
另外, 尽管上面各实施例中, 电容器的引脚形式与现有技术中的电容器 的引脚形式有所不同,但是这可以通过在定制电容器时要求电容器厂家按照 要求制作, 另外, 可以设计一个转接元件, 该转接元件具有类似于各实施例 的形式, 并且, 现有的电容器可以直接安装到该转接元件上, 以实现端子形 式的转换。 例如, 该转接元件为第一和第二实施例中的电容器 130的形状, 并且现有技术的电容器可以安装在其中并适当固定, 并且通过内部接线连接 等将现有技术的电容器的引脚与转接元件的引脚相连接, 这样, 只要额外准 备这种转接元件, 就可以避免对现有技术的电容器进行任何改动, 达到了节 省成本的目的。
另夕卜,尽管上面参照本实用新型的优选实施方式详细地描述了本实用新 型, 但是,要理解的是, 本实用新型并不局限于此, 而是可以做出各种改进。 例如, 电容器 130的形状不必是圓柱形, 而是可以为任何形状, 另外, 电容 器 130的位置也不必一定位于相同一侧, 只要根据电容器 130的具体位置设 置相应的开口和可开启盖板即可。 也可以仅仅在容易损坏的电容器 130, 例 如位于散热条件最差的位置处的电容器 130处设置开口和盖板, 由此, 方便 更换这个容易损坏的电容器 130。 甚至, 不必设置开口, 而是在更换时将电 气设备的壳体取下, 直接进行更换也能达到类似的效果。
因此, 鉴于上面的描述, 本领域技术人员可以理解到在不背离本实用新 型的精髓和范围的前提下, 可以对在此描述的具体实施例进行各种修改、 替 代、 变型或者各个实施例中公开的特征可以相互结合而获得另一个新的实施 例, 而这些都应落入本实用新型的保护范围内。

Claims

权利要求
1. 一种电气设备(100 ), 该电气设备包括电路板 ( 160 )和安装在电路 板上的电容器 (130 ), 其特征在于, 所述电容器(130 )可拆卸地安装在该 电路板 ( 160 ) 上。
2. 如权利要求 1 所述的电气设备(100 ), 其特征在于, 所述电气设备 还包括壳体(120 ), 所述壳体在与电容器相对应的位置处形成有开口 (150 ) 以及可打开和封闭该开口的舱盖 〔152 )。
3. 如权利要求 1或 2所述的电气设备, 其特征在于, 所述电容器的两 个引脚 (131 ; 131a, 131b )设置在电容器中的与电路板相对的底面上, 而 在电路板 ( 160 ) 上设置有分别与所述电容器的端子可拆卸连接的两个连接 端子 (161 )。
4. 如权利要求 3所述的电气设备,其特征在于,所述电容器的引脚( 131 ) 为从电容器的底面伸出的连接片的形式, 而所述电路板上的连接端子为弹性 夹紧端子(161 ) 的形式。
5. 如权利要求 3所述的电气设备, 其特征在于, 所述电容器的其中一 个引脚为从电容器的底面伸出的圓筒状端子(131b ), 该圆筒状端子的内周 或外周带有螺纹, 而另一引脚为从电容器的底面所述圆筒状端子的内部的位 置处伸出的柱状端子(131a ); 且
所述电路板上的连接端子中的一个为圆筒状( 161 ), 并且在外周或内周 具有能够与所述电容器的圓筒状端子相啮合的螺纹,所述电路板上的连接端 子中的另一个设置在所述电路板上、所述圆筒状连接端子的内部与所述电容 器的柱状端子相对应的位置处。
6. 如权利要求 5所述的电气设备, 其特征在于, 所述电路板(160 )上 的连接端子中的另一个为设置在电路板上的布线或者设置在电路板上的弹 性片。
7. 如权利要求 4所述的电气设备, 其特征在于, 在所述电路板上还设 置有套筒(162 ),该套筒的内周形状与电容器的主体的外周形状基本上相同, 以引导电容器安装到电路板上。
8. 如权利要求 5所述的电气设备, 其特征在于, 在所述电路板上还设 置有套筒(162 ),该套筒的内周形状与电容器的主体的外周形状基本上相同, 以引导电容器安装到电路板上。
9. 如权利要求 7所述的电气设备, 其特征在于, 所述套筒 (162 )上设 置有台阶部, 以确定电容器的插入位置。
10. 如权利要求 8所述的电气设备, 其特征在于, 所述套筒 (162 )上 设置有台阶部, 以确定电容器的插入位置。
11. 如权利要求 1或 2所述的电气设备, 其特征在于, 所述电气设备包 括转接元件, 该转接元件可拆卸地安装在所述电路板上, 而所述电容器安装 在该转接元件上。
12. 如权利要求 11 所述的电气设备, 其特征在于, 所述转接元件具有 设置在转接元件的与电路板相对的底面上的两个引脚, 所述转接元件的两个 引脚一方面分别与其上所安装的电容器的两个引脚相连接, 另一方面分别与 电路板上设置的两个连接端子可拆卸地相连接, 以将电容器与电路板电连 接。
13. 如权利要求 12所述的电气设备, 其特征在于, 所述转接元件的引 脚为从电容器的底面伸出的连接片的形式, 而所述电路板上的连接端子为弹 性夹紧端子的形式。
14. 如权利要求 12所述的电气设备, 其特征在于, 所述转接元件的其 中一个引脚为从转接元件的所述底面伸出的圓筒状端子, 该圆筒状端子的内 周或外周带有螺纹, 而另一引脚为从转接元件的底面所述圓筒状端子内部的 位置处伸出的柱状端子; 并且
所述电路板上的连接端子中的一个为圓筒状,并且在外周或内周具有能 够与所述电容器的圓筒状端子相啮合的螺纹, 并且所述电路板上的连接端子 中的另一个设置在所述电路板上、所述圓周状连接端子的内部与所述转接元 件的柱状端子相对应的位置处。
15. 如权利要求 14所述的电气设备, 其特征在于, 所述电路板的连接 端子中的另一个为设置在电路板上的布线或者设置在电路板上的弹性片。
16. 如权利要求 13 所述的电气设备, 其特征在于, 在所述电路板上还 设置有套筒(162 ), 该套筒的内周形状与转接元件的主体的外周形状基本上 相同, 以引导所述转接元件安装到电路板上。
17. 如权利要求 14所述的电气设备, 其特征在于, 在所述电路板上还 设置有套筒, 该套筒的内周形状与转接元件的主体的外周形状基本上相同, 以引导转接元件安装到电路板上。
18. 如权利要求 16所述的电气设备, 其特征在于, 所述套筒上设置有 台阶部, 以确定转接元件的插入位置。
19. 如权利要求 17所述的电气设备, 其特征在于, 所述套筒上设置有 台阶部, 以确定转接元件的插入位置。
PCT/CN2013/077031 2012-06-14 2013-06-09 电气设备 Ceased WO2013185584A1 (zh)

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CN202758740U (zh) 2013-02-27

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