CN2508496Y - Cable TV transmission device with power supply isolating member - Google Patents

Abstract

The utility model provides a cable television transmitting device provided with a power insulating component, and the cable television transmitting device comprises a metal casing body, a main body part of a circuit board, an electric conducting terminal clamp which is arranged at a slot of the power connector, and a feedthrough capacitor which is arranged at the slot and positioned on the inner side of the axial direction of the terminal clamp; wherein, the feedthrough capacitor has a capacitor part which is connected with the casing body, an outer side connecting foot which is connected with the connecting part of the terminal clamp, and an inner side connecting foot which is connected with the circuit board; and the capacitor part is sealed and connected with a through hole of the corresponding slot of the casing body by a soldering tin or a metal sleeve ring. The utility model directly utilizes the metal power connector as a sheltering casing body which can sharply save the inner space of the casing body, and correspondingly lead the size of the casing body to be reduced; the radiated interference which is generated during the power terminal inputting the power is easily and safely sealed in the power connector to avoid leakage, thereby leading the cable television transmitting device to have better transmitting effect, thus the client-side can be provided with good receiving quality.

Description

CATV transmission device with isolated from power member

Technical field

The utility model relates to a kind of CATV transmission device, refers to a kind of CATV transmission device with isolated from power member especially.

Background technology

As CATV transmission equipment such as amplifier, distributor, splitters, joint power supply source terminal butt joint all need be set, so that being provided, wired TV transmissioning equipment internal circuit unit operates required power supply.Yet when power supply when terminal and joint enter transmission equipment, if screening effect is not good, its electromagnetic radiation will produce transmission equipment internal electrical components or other I/O port and disturb, and the rating signal quality of influence transmission.

The amplifier power supply insulating element of an existing CATV transmission device as shown in Figure 1, 2, comprise vertically be convexly set in one first inner one jiao metallic bulkhead 91 of a CATV transmission device case 90, in order to covering less metal second next door 93 of 91 areas of plane, a metal top cover 92, one relative first next door in described first next door 91, and one be embedded and be fixed in one of second next door, 93 1 apical margin grooves 931 and run through electric capacity 94.The described electric capacity 94 that runs through is from having an outside pin 941, a capacitance part 942 and an inboard pin 943 outside to inside, wherein outside pin 941 as shown in Figure 2, be welded in a power supply terminal 96 the inners that inwardly plug from power connection 95, capacitance part 942 is except that being supported in the described groove 931 in order to be embedded, and can cover back and loam cake 92 generation ground connection effects downwards in metal top cover 92,943 of inboard pins can connect to a circuit board 98 corresponding contacts by a lead 97.

Though above-mentioned isolated from power member can be by being all metal first next door 91, the loam cake 92 and second next door 93, and the electromagnetic radiation of power supply terminal 96 is produced buffer action, but its principal disadvantage is described first and second next door 91, the 93 described housing 90 inner quite spaces that need account for, described CATV transmission device overall volume can't be reduced, and loam cake 92 need closely be pressed on second next door, 93 upper limbs in actual installation, otherwise the electromagnetic radiation of power supply terminal 96 still may be isolated screening effect and destroy reality from loam cake 92 and the 93 upper limb slot leakages of second next door.

The utility model content

The purpose of this utility model is to provide a kind of CATV transmission device with isolated from power member, it directly with power connection as shielding casing to save the space and and then to dwindle the CATV transmission device volume.

For achieving the above object, the technical solution of the utility model is as follows:

A kind of CATV transmission device with isolated from power member comprises: a body, and have a metal shell and be located in a circuit board of described enclosure interior, described housing outwards convexes with the power connection for power supply terminal butt joint; One is located in the conducting terminal folder of described power connection internal slots, has the clamping part of the described power supply terminal of a clamping, and one is positioned at the axially inboard junction of described slot; Reaching one is located in described slot and is positioned at the electric capacity that runs through that terminal presss from both sides axial inboard, have a capacitance part, that connects to described housing and be connected to the outside pin that described terminal presss from both sides junction, and an inboard pin that connects to described circuit board, wherein run through between the corresponding perforation of capacitance part of electric capacity also can and be electrically conducted through scolding tin or metallic sheath ring seal with described housing.

Adopt such scheme, the utility model can directly be shielded in power connection inside with power supply terminal, reduces the housing volume to save the enclosure interior space, and by scolding tin or metallic sheath ring seal cooperation usefulness, can obtain good radiation isolation effect.

Below by preferred embodiment and accompanying drawing the CATV transmission device with isolated from power member of the present utility model is elaborated, in the accompanying drawing:

Description of drawings

Fig. 1 is an existing CATV transmission device partial perspective view with isolated from power member, wherein runs through electric capacity and still is unkitted the setting position;

Fig. 2 is in the CATV transmission device shown in Figure 1, with the described stereogram that runs through behind the electric capacity installing location.；

Fig. 3 is the exploded perspective view of the utility model one preferred embodiment;

Fig. 4 is the stereogram after the isolated from power portion 2 among Fig. 3 amplifies, wherein terminal folder 7 and run through electric capacity 8 through being welded as a whole;

Fig. 5 is the stereogram after the isolated from power portion 2 among Fig. 3 finishes with body 1 assembling;

Fig. 6 is the cutaway view along Fig. 5 cutting line VI gained;

Fig. 7 be among Fig. 5 the assembling isolated from power portion that finishes 2 and body 1 further for the peg graft cutaway view of back gained of conducting terminal 5;

Fig. 8 is the part exploded perspective view of another preferred embodiment of the utility model;

Fig. 9 is the partial sectional view after isolated from power portion 2 ' finishes with body 1 ' assembling among Fig. 8.

Embodiment

As shown in Figure 3, a preferred embodiment that the utlity model has the CATV transmission device of isolated from power member is to be that example describes with an amplifier, and it comprises a body 1 and is connected to an isolated from power portion 2 of described body 1.The metallic housing 31, one that described body 1 has a rectangular box body is positioned at upside and can covers a metallic lid 32 of described housing 31 upper limbs down, and is installed with a circuit board 4 that is fixed in described housing 31 inside.Outwards be convexly equipped with a short pipe shape power connection 312 in described housing 31 1 sidewalls 311, supply described CATV transmission device for a power supply terminal 5 butt joints and operate required power supply, a cylindrical pocket 313 is defined in power connection 312 inside, and a perforation 314 is then offered in described sidewall 311 corresponding described slots 313 axial inboards.Outwards convex with several Signal connectors 315 on other sidewall of described first housing 31, carry out the transmission of radio frequency (RF) signal for the signal terminal (not shown) butt joint of respective amount.

Shown in Fig. 3,4, described isolated from power portion 2 comprises that an insulation body 6, terminal folder 7 and run through electric capacity 8.Described insulation body 6 is short pipe shape equally, and can axially be inserted in the slot 313 of power connection 312, described insulation body 6 comprises a pipe shape tube wall 61, reach an axial passage 62 that defines by described tube wall 61 inside, shown in Fig. 6,7, described axial passage 62 from its axially the outside to inboard different segmentum laterale 621, interlude 622 and the medial segments 623 of size that also further form, with the above-mentioned power supply terminal 5 in ccontaining location, terminal folder 7 respectively and run through electric capacity 8.

Shown in Fig. 3,4,6, terminal folder 7 as above-mentioned be the interlude 622 that is located in axial passage 62, and comprise a cylindrical metallic wall body 71, and a grasping part 72 that defines by wall body 71 inside.But wall body 71 forms clamping near the inside radial depressions of axial outer end and is electrically conducted a clamping part 711 of described power supply terminal 5, and axially offer several flutings 712 along wall body 71, increasing the radial elastic of described clamping part 711, wall body 71 is axially inboard then inwardly to protrude out a junction 713 that is arc surface.

The described electric capacity 8 that runs through comprises a capacitance part 81, and the self-capacitance portion 81 axial outsides and an inboard outside pin 82 and an inboard pin 83 that oppositely protrudes out, and outside pin 82 and inboard pin 83 are relative connections in described capacitance part 81 inside.Especially as shown in Figure 6, axially the outside is partly also as above-mentioned and be located in the medial segment 623 of axial passage 62 for capacitance part 81, its inside line then is located in the perforation 314 of described housing 31 sidewalls 311, slightly be exposed to described perforation 314 axial inner edges 316 in running through electric capacity 8 axial inner edges 84 described in this preferred embodiment to convex, described perforation 314 forms and cooperates the inclined-plane 317 that runs through electric capacity 8 axial inboard circular cone profiles, runs through with block that electric capacity 8 inwardly moves axially or deviate from perforation 314.Run through the outside pin 82 of electric capacity 8 and the junction 713 of terminal folder 7 and connect, and inboard pin 83 further connects to circuit board 4 corresponding contacts by a lead 85.Aforementioned outside pin 82 is to constitute the described positive pole that runs through electric capacity 8 with the circuit of inboard pin 83 common conductings, but the outer rim of capacitance part 81 axial inside lines the negative pole 86 that relatively forms then embedding hold and essence is connected to perforation 314, see through to run through electric capacity 8 negative poles 86 and to bore a hole by this and 314 constitute ground paths to metal shell 31 corresponding sidewalls 311, and obtain the effect of radiation Isolated Shield.

Assembling of the present utility model, earlier as shown in Figure 4, the junction 713 that makes the outside pin 82 that runs through electric capacity 8 and terminal folder 7 after the welding, is inserted in insulation body 6 axial passages 62 corresponding positions with both one in advance; For another example shown in Fig. 5,6, insulation body 6 axially is inserted in the slot 313 of power connection 312, and will run through electric capacity 8 and be exposed to perforation 314 axial inner edge 84 outsides to convex and combine sealing with the 314 axial inner edges 316 of boring a hole with scolding tin 318, be welded between inboard pin 83 and circuit board 4 corresponding contacts with lead 85 again and constitute a power source path; Then as shown in Figure 7, power supply terminal 5 one ends are plugged the grasping part 72 that is placed in terminal folder 7, and pull and electrically conduct with terminal folder 7 through the folder of clamping part 711, and clamping part 711 is subjected to the pushing and pressing of terminal 7 outer rims and slightly radially elastic deflection, state as shown in Figure 7 outwardly.

Be another preferred embodiment of the utility model as shown in Figure 8, it also is provided with a metal collar 9 ' in running through electric capacity 8 ' axial inboard, comprises a circular body 91 ', reaches a collar flange 92 ' that radially protrudes out from described body 91 ' axial outer end.Its overall package as shown in Figure 9, the junction 713 ' that makes the outside pin 82 ' that runs through electric capacity 8 ' and terminal folder 7 ' is in advance after the welding, sheathed and welding is fixing with the described metal collar 9 ' for running through electric capacity 8 ' negative pole 86 ', again the black box after the above-mentioned welding is inserted in insulation body 6 ' and inserts the slot 313 ' of power connection 312 ', and the collar flange 92 ' that makes the metal collar 9 ' is butted on perforation 314 ' axial outer rim, whereby by running through electric capacity 8 ' negative pole 86 ', the metal collar 9 ' to metal shell 31 sidewalls 311 formations one ground path.

By above-mentioned structure and assembling mode, the utility model directly is installed in power connection 312 inside that housing 31 protrudes out with isolated from power portion 2, and directly utilize metal power connection 312 as shielding casing, compare existing apparatus and the isolated from power member is located at the design of enclosure interior, the utility model can significantly be saved the enclosure interior space, can make the housing reduction in bulk relatively; And by running through the scolding tin 318 or the metal collar 9 ' of 314 of electric capacity 8 negative poles 86 and perforation, more can easily the radiated interference that produces from power supply terminal 5 input power supplys be closed in power connection 312 inside really and not have the generation of leakage, make described CATV transmission device have better citation effect, and can provide client good rating quality.

Claims (9)

1. CATV transmission device with isolated from power member, it connects a power supply terminal to supply its required power supply and to comprise in specific place: a body, have a metal shell and be located in a circuit board of described enclosure interior, described housing one side direction is convexly equipped with an inside outward and defines the power connection of a slot for described power supply terminal butt joint, the corresponding described slot of described housing offers a perforation, and have one to make and be located in the terminal folder of described slot by conductive material, reach one and be located in described slot and be positioned at the electric capacity that runs through that described terminal presss from both sides axial inboard, it is characterized in that:

Described terminal anchor clamps have the clamping part of the described power supply terminal of a clamping, and one is positioned at the axially inboard junction of described slot;

The described electric capacity that runs through has one and connects the outside pin that capacitance part, to described housing is connected to described terminal folder junction, and an inboard pin that connects to described circuit board.

2. the CATV transmission device with isolated from power member as claimed in claim 1 is characterized in that:

Described body has a lid that can cover described housing relatively.

3. the CATV transmission device with isolated from power member as claimed in claim 1 is characterized in that:

Described CATV transmission device also comprises an insulation body that is sheathed on described slot inside, and its inside is defined an axial passage and pressed from both sides and run through electric capacity and be installed with for described power supply terminal, terminal.

4. the CATV transmission device with isolated from power member as claimed in claim 1 is characterized in that:

The described capacitance part embedding that runs through electric capacity is dissolved in the described housing perforation.

5. the CATV transmission device with isolated from power member as claimed in claim 4 is characterized in that:

The described axially inboard protruding axial inner edge that is exposed to described housing perforation of capacitance part that runs through electric capacity.

6. as claim 4 or 5 described CATV transmission devices, it is characterized in that with isolated from power member:

Intermarginal in described axial inboard periphery of capacitance part that runs through electric capacity and the described perforation axially is to seal through scolding tin.

7. as claim 4 or 5 described CATV transmission devices, it is characterized in that with isolated from power member:

Described housing perforation has the described inclined-plane that runs through the capacitance part profile of electric capacity of cooperation, moves inward with the described electric capacity that runs through of block.

8. the CATV transmission device with isolated from power member as claimed in claim 1 is characterized in that:

Described CATV transmission device also comprises a metal collar that is embedded at the perforation of described housing, and is sheathed and be electrically conducted for the described capacitance part that runs through electric capacity.

9. the CATV transmission device with isolated from power member as claimed in claim 8 is characterized in that: the described metal collar has and is butted on a bore a hole collar flange of axial outer rim of described housing.

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