CN102201620A

CN102201620A - Power supply device

Info

Publication number: CN102201620A
Application number: CN2010101329094A
Authority: CN
Inventors: 侯贵智
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2010-03-25
Filing date: 2010-03-25
Publication date: 2011-09-28

Abstract

The invention provides a power supply device which comprises a housing, a power supply circuit, a power line and a terminal block, wherein the power supply circuit and the terminal block are arranged outside the housing and the terminal block is connected with the power supply circuit; and the housing is provided with a through hole, and the power line penetrates through the through hole to be connected with the terminal block. Thus, the power line of the power supply device provided by the invention is connected with the power supply circuit through the terminal block and the power line can be replaced conveniently. The terminal block arranged outside the housing can avoid electric shock accidents and the security can be improved.

Description

power supply unit

技术领域technical field

本发明涉及一种电源装置。The invention relates to a power supply device.

背景技术Background technique

传统的电源装置一般包括一个外壳、一个设置在该外壳内的电源电路及一个电源线。该电源线一般焊接至该电源电路。当电源线或者电源电路损坏而需要更换时，需拆焊及重新焊接该电源线。另外，当电源电路的结构模组化，只需更换电源电路中的某个模组，便能使整个电源电路适用于不同的电源规格(如，从连接单相三线电源更变为连接三相五线电源)时，需更换电源线，也涉及到拆焊及重新焊接电源线，而拆焊及焊接过程均较繁琐。传统的电源装置还有另一种形式，其包括一个连接至该电源电路的端子台，该端子台设置在外壳之外，该电源线通过连接至该端子台而连接至该电源电路。此种方法方便了电源线的更换，然而，由于端子台外露，容易造成触电事故。A traditional power supply device generally includes a casing, a power circuit and a power cord arranged in the casing. The power wire is generally soldered to the power circuit. When the power cord or power circuit is damaged and needs to be replaced, the power cord needs to be desoldered and re-soldered. In addition, when the structure of the power circuit is modularized, only one module in the power circuit needs to be replaced to make the entire power circuit suitable for different power specifications (for example, changing from connecting a single-phase three-wire power supply to connecting a three-phase When using a five-wire power supply), the power cord needs to be replaced, which also involves desoldering and re-soldering of the power cord, and the desoldering and welding processes are more cumbersome. There is another form of the conventional power supply device, which includes a terminal block connected to the power circuit, the terminal block is disposed outside the casing, and the power line is connected to the power circuit by being connected to the terminal block. This method facilitates the replacement of the power cord, however, because the terminal block is exposed, it is easy to cause electric shock accidents.

发明内容Contents of the invention

有鉴于此，有必要提供一种电源线更换方便、使用安全的电源装置。In view of this, it is necessary to provide a power supply device that is easy to replace the power cord and safe to use.

一种电源装置，其包括一个外壳、一个电源电路、一个电源线及一个端子台。该电源电路及端子台设置在该外壳内，且该端子台连接至该电源电路。该外壳开设有一个通孔，该电源线穿过该通孔连接至该端子台。A power supply device includes a casing, a power supply circuit, a power supply line and a terminal block. The power circuit and the terminal block are arranged in the casing, and the terminal block is connected to the power circuit. A through hole is opened in the shell, and the power line is connected to the terminal block through the through hole.

与现有技术相比，本发明的电源装置的电源线通过端子台与电源电路连接，电源线更换方便。端子台设置在外壳内，可避免触电事故的发生，提高了安全性。Compared with the prior art, the power line of the power supply device of the present invention is connected to the power circuit through the terminal block, and the power line is easy to replace. The terminal block is arranged in the casing, which can avoid the occurrence of electric shock accidents and improve safety.

附图说明Description of drawings

图1为本发明较佳实施方式的电源装置的结构示意图。FIG. 1 is a schematic structural diagram of a power supply device according to a preferred embodiment of the present invention.

图2为图1的电源装置的分解示意图。FIG. 2 is an exploded schematic diagram of the power supply device in FIG. 1 .

图3为图1的电源装置的另一分解示意图。FIG. 3 is another exploded schematic diagram of the power supply device in FIG. 1 .

主要元件符号说明Description of main component symbols

外壳 100Shell 100

壳体 102Shell 102

第一表面 102afirst surface 102a

第二表面 102bsecond surface 102b

盖板 104Cover 104

承载凹槽 106Bearing groove 106

底面 108Bottom 108

第一螺孔 110The first screw hole 110

第二螺孔 112Second screw hole 112

通孔 114Via 114

第三螺孔 116The third screw hole 116

电源电路 200Power circuit 200

端子台 300Terminal block 300

绝缘壳 302Insulation shell 302

固定螺孔 302aFixing screw hole 302a

凹槽 302bGroove 302b

接触件 304Contact piece 304

连接螺孔 304aConnecting screw hole 304a

连接螺钉 306Connecting screw 306

电缆固定头 400Cable gland 400

本体 402Ontology 402

第一端 402aFirst end 402a

第二端 402bSecond end 402b

开口 402cOpening 402c

固定件 404Fixing piece 404

连接螺母 406Connecting nut 406

压迫件 408Compression parts 408

圆管端 408aRound pipe end 408a

尖端 408bTip 408b

电源线 500Power cord 500

具体实施方式Detailed ways

请参考图1至图3，本发明较佳实施方式的电源装置10包括一个外壳100、一个电源电路200、一个端子台300、一个电缆固定头400、一个电源线500。Please refer to FIG. 1 to FIG. 3 , the power supply device 10 according to the preferred embodiment of the present invention includes a casing 100 , a power supply circuit 200 , a terminal block 300 , a cable fixing head 400 , and a power cord 500 .

外壳100包括一个方形的壳体102及一个盖板104。壳体102包括两个相互垂直且连接的第一表面102a及第二表面102b。第一表面102a开设有一个承载凹槽106，承载凹槽106包括一个平行第一表面102a的底面108，底面108上开设有两个第一螺孔110。第一表面102a上位于承载凹槽106的两侧分别开设有一个第二螺孔112。第二表面102b上开设有一个连通至承载凹槽106的通孔114。盖板104略大于承载凹槽106，用于覆盖承载凹槽106，其对应第一螺孔110的位置上开设有两个第三螺孔116，盖板104通过第二螺孔112及第三螺孔116由两个螺钉(图未标)螺合至壳体102上，以覆盖承载凹槽106，从而形成一个能容纳端子台300的承载空间(图未标)。The housing 100 includes a square shell 102 and a cover 104 . The housing 102 includes two perpendicular and connected first surfaces 102 a and second surfaces 102 b. The first surface 102 a defines a bearing groove 106 , the bearing groove 106 includes a bottom surface 108 parallel to the first surface 102 a, and two first screw holes 110 are defined on the bottom surface 108 . Two second screw holes 112 are respectively defined on the first surface 102 a at two sides of the bearing groove 106 . A through hole 114 connected to the bearing groove 106 is defined on the second surface 102b. The cover plate 104 is slightly larger than the bearing groove 106, and is used to cover the bearing groove 106. Two third screw holes 116 are provided at the position corresponding to the first screw hole 110. The cover plate 104 passes through the second screw hole 112 and the third screw hole. The screw holes 116 are screwed to the housing 102 by two screws (not shown), so as to cover the carrying groove 106 , thereby forming a carrying space (not shown) capable of accommodating the terminal block 300 .

端子台300包括一个绝缘壳302，三个接触件304及三个连接螺钉306。绝缘壳302由绝缘材料(如塑料)制成，其包括分别位于其两端的固定螺孔302a，及位于绝缘壳302中部的三个互不连通的凹槽302b，凹槽302b的形状与接触件304的形状相匹配。接触件304由导电材料(如铜)制成，其中间开设有一个连接螺孔304a，连接螺孔304a与连接螺钉306相匹配。接触件304的一端固定在凹槽302b中，另一端延伸至绝缘壳302之外，并连接至设置在外壳100之内的电源电路200。端子台300通过固定螺孔302a及第一螺孔110由两个螺钉螺合至壳体102的底面108上，以固定在外壳100的承载空间内。The terminal block 300 includes an insulating case 302 , three contacts 304 and three connecting screws 306 . The insulating case 302 is made of an insulating material (such as plastic), and it includes fixing screw holes 302a respectively located at its two ends, and three mutually disconnected grooves 302b located in the middle of the insulating case 302. The shape of the grooves 302b is consistent with that of the contacts 304 to match the shape. The contact piece 304 is made of conductive material (such as copper), and a connection screw hole 304 a is opened in the middle thereof, and the connection screw hole 304 a matches the connection screw 306 . One end of the contact piece 304 is fixed in the groove 302 b , and the other end extends out of the insulating case 302 and is connected to the power circuit 200 disposed inside the housing 100 . The terminal block 300 is screwed to the bottom surface 108 of the housing 102 by two screws through the fixing screw hole 302 a and the first screw hole 110 , so as to be fixed in the bearing space of the housing 100 .

电缆固定头400包括一个本体402、一个固定件404、一个连接螺母406及一个压迫件408。该本体402呈圆管状，其包括相对的第一端402a及第二端402b，本体402的外表面开设有螺纹，本体402的第一端402a沿本体402的轴向方向上开设有两个楔形的开口402c，两个开口402c以将第一端402a分为两半。本体402的外径与外壳100的通孔114直径相匹配，本体402的内径略大于电源线500的外径，以使电源线500能够穿过本体402。该固定件404大致呈圆环状且沿本体402的径向固定于本体402中部的外侧，固定件404的外径与连接螺母406的外径均大于外壳100的通孔114的直径。压迫件408大致呈圆锥状，其包括一个圆管端408a及一个尖端408b，圆管端408a可螺合至本体402的第一端402a，尖端408b自圆管端408a一侧沿圆管端408a的轴向方向延伸，且内径越来越小以致刚好能让电源线500穿过。当压迫件408螺合至本体402的第一端402a时，由于压迫件408的尖端408b的压力，本体402的第一端402a将沿其径向向内收缩，从而紧压电源线500以将其固定在电缆固定头400上。The cable fixing head 400 includes a body 402 , a fixing part 404 , a connecting nut 406 and a pressing part 408 . The body 402 is in the shape of a round tube, which includes opposite first ends 402a and second ends 402b. The outer surface of the body 402 is provided with threads, and the first end 402a of the body 402 is provided with two wedges along the axial direction of the body 402 Two openings 402c divide the first end 402a into two halves. The outer diameter of the body 402 matches the diameter of the through hole 114 of the casing 100 , and the inner diameter of the body 402 is slightly larger than the outer diameter of the power cord 500 so that the power cord 500 can pass through the body 402 . The fixing member 404 is substantially circular and fixed on the outer side of the body 402 along the radial direction of the body 402 . The outer diameter of the fixing member 404 and the connecting nut 406 are larger than the diameter of the through hole 114 of the housing 100 . The pressing member 408 is generally conical, and includes a round tube end 408a and a tip 408b. The round tube end 408a can be screwed to the first end 402a of the body 402, and the tip 408b extends from the side of the round tube end 408a along the round tube end 408a. The axial direction extends, and the inner diameter becomes smaller and smaller so that the power cord 500 can pass through. When the pressing piece 408 is screwed to the first end 402a of the body 402, due to the pressure of the tip 408b of the pressing piece 408, the first end 402a of the body 402 will shrink inward along its radial direction, thereby pressing the power cord 500 tightly to It is fixed on the cable gland 400 .

组装时，电源线500的一端依次穿过压迫件408及本体402的第一端402a，压迫件408螺合至本体402的第一端402a，以将电源线500固定至电缆固定头400。电源线500及本体402的第二端402b插入壳体102的通孔114，电缆固定头400的固定件404依次穿过电源线500及本体402的第二端402b，电缆固定头400螺合至本体402的第二端402b，以将电缆固定头400固定至外壳100。电源线500通过连接螺钉306螺合至接触件304，以将电源线500连接至端子台300，进而连接到电源电路200。盖板104固定至壳体102，以将端子台300封闭在外壳100之内。如此，电源线500连接至电源电路200。During assembly, one end of the power cord 500 passes through the pressing member 408 and the first end 402 a of the body 402 in turn, and the pressing member 408 is screwed to the first end 402 a of the body 402 to fix the power cord 500 to the cable fixing head 400 . The power cord 500 and the second end 402b of the body 402 are inserted into the through hole 114 of the housing 102, the fixing member 404 of the cable fixing head 400 passes through the power cord 500 and the second end 402b of the body 402 in turn, and the cable fixing head 400 is screwed to the The second end 402b of the body 402 is used to fix the cable fixing head 400 to the housing 100 . The power cord 500 is screwed to the contact piece 304 by the connecting screw 306 to connect the power cord 500 to the terminal block 300 and further to the power circuit 200 . The cover plate 104 is fixed to the housing 102 to enclose the terminal block 300 within the housing 100 . In this way, the power line 500 is connected to the power circuit 200 .

由于电源线500是通过端子台300连接至电源电路200，所以，只需通过拆装端子台300的连接螺钉306及电缆固定头400便能更换电源线500，使得电源线500的更换方便。另外，由于端子台300是设置在外壳100之内，使得电源线500连接电源后端子台300不外露，避免了触电事故发生。Since the power cord 500 is connected to the power circuit 200 through the terminal block 300, the power cord 500 can be replaced only by disassembling the connecting screw 306 and the cable fixing head 400 of the terminal block 300, making the replacement of the power cord 500 convenient. In addition, since the terminal block 300 is disposed inside the casing 100, the terminal block 300 is not exposed after the power cord 500 is connected to a power source, thereby avoiding electric shock accidents.

另外，电源线500靠近端子台300的一端还通过电缆固定头400固定至外壳100上，使得电源线500不易受拉扯影响与端子台300的连接，进而使电源线500与外壳100的连接更加稳定。可以理解，在本发明所针对的技术问题的背景下，电缆固定头400的设置属于一个优选的技术方案。In addition, the end of the power cord 500 close to the terminal block 300 is also fixed to the housing 100 through the cable fixing head 400, so that the connection between the power cord 500 and the terminal block 300 is not easily affected by pulling, thereby making the connection between the power cord 500 and the housing 100 more stable. . It can be understood that in the context of the technical problem addressed by the present invention, the arrangement of the cable fixing head 400 is a preferred technical solution.

在本实施方式中，端子台300所包括的接触件304的个数可应电源线500的不同而更换具有对应个接触件304的端子台(图未示)，如，当电源线500连接的是三相五线规格的电源时，可将端子台300更换为具有五个接触件304的端子台，再将各个接触件304对应的连接至电源电路200。In this embodiment, the number of contacts 304 included in the terminal block 300 can be replaced with a terminal block (not shown) with a corresponding number of contacts 304 according to the difference of the power cord 500, for example, when the power cord 500 is connected When the power supply is a three-phase five-wire power supply, the terminal block 300 can be replaced with a terminal block having five contact pieces 304 , and then each contact piece 304 is correspondingly connected to the power supply circuit 200 .

可以理解，承载凹槽106及通孔114设置在相互垂直的两个表面上是为了使电源线500通过通孔114进入外壳100后，电源线500无需弯曲便可被固定至端子台300上，以便安装。然而，本发明不限于此，该承载凹槽106及通孔114的位置可以根据具体情况而定。It can be understood that the bearing groove 106 and the through hole 114 are arranged on two surfaces perpendicular to each other so that after the power cord 500 enters the housing 100 through the through hole 114, the power cord 500 can be fixed to the terminal block 300 without bending. for installation. However, the present invention is not limited thereto, and the positions of the bearing groove 106 and the through hole 114 can be determined according to specific conditions.

可以理解，承载凹槽106的设置只是为了端子台300能收容至外壳100之内，因此，其它能达到上述目的的设置方式皆在本发明的范围之内。It can be understood that the arrangement of the carrying groove 106 is only for the purpose of receiving the terminal block 300 into the housing 100 , and therefore, other arrangements that can achieve the above purpose are within the scope of the present invention.

本技术领域的普通技术人员应当认识到，以上的实施方式仅是用来说明本发明，而并非用作为对本发明的限定，只要在本发明的实质精神范围之内，对以上实施例所作的适当改变和变化都落在本发明要求保护的范围之内。Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Alterations and variations are within the scope of the claimed invention.

Claims

1. A power supply device comprising a casing, a power supply circuit arranged in the casing and a power cord, characterized in that the power supply device also includes a terminal block arranged in the casing and connected to the power supply circuit , the casing is provided with a through hole, and the power line is connected to the terminal block through the through hole.

2. The power supply device according to claim 1, wherein the casing comprises a housing and a cover plate; the housing is provided with a bearing groove, and the cover plate covers the bearing groove to form A carrying space for carrying the terminal block.

3. The power supply device according to claim 2, wherein the casing comprises a first surface and a second surface which are perpendicular to each other and are connected, the carrying groove is arranged on the first surface, and the through hole is arranged on on the second surface and communicate with the bearing groove.

4. The power supply device as claimed in claim 3, wherein the carrying groove comprises a bottom surface parallel to the first surface, and the terminal block is disposed on the bottom surface.

5. The power supply device according to claim 1, wherein the terminal block comprises an insulating shell made of insulating material, a plurality of contacts made of conductive material and a plurality of connecting screws; the insulating shell is set There are a plurality of grooves which are not connected with each other, and each contact piece is provided with a connecting screw hole; the contact piece is accommodated in the groove, and each connecting screw is screwed into a connecting screw hole.

6. The power supply device as claimed in claim 5, wherein one end of each contact is fixed in the groove, and the other end extends out of the insulating case and is connected to the power circuit.

7. The power supply device as claimed in claim 1, further comprising a cable fixing head, the cable fixing head is fixed to the through hole to fix the power cord to the casing.

8. The power supply device according to claim 7, wherein the cable gland comprises a main body, a fixing member, a connecting nut and a pressing member; the main body is in the shape of a circular tube, which includes opposite first ends and The second end, the main body can accommodate the power cord and is arranged in the through hole, the fixing part is arranged in the middle of the main body, the pressing part and the connecting nut are respectively arranged at the first end and the second end of the main body on the two ends to fix the cable gland in the through hole.

9. The power supply device according to claim 8, wherein the outer surface of the main body is provided with threads, and the first end is provided with two wedge-shaped openings along the axial direction of the main body, so that the first end Divided into two halves; the fixing part is roughly annular and fixed on the outside of the middle part of the body along the radial direction of the body; the pressing part is roughly conical and includes a round tube end and a tip, and the round tube end Screwed to the first end, the tip extends from one side of the round tube end along the axial direction of the round tube end, and its inner diameter gradually becomes smaller and can be passed through by the power cord.