Depart from and hide the full mould protection of arc device and small size high security surge protector
Technical field
The invention belongs to the protective device of electronic electric equipment, particularly a kind of the disengaging and screening arc device and surge protector.
Background technology
Along with the development of the industry such as electric power, communication, the range of application of surge protector is more and more wider, and the number of times breaking down in application is more and more.When surge protector is deteriorated or overload after, will breaking out of fire as can not be separated with device security with interchange or DC circuit in time time etc. accident, therefore the fail safe under the deteriorated or overload situations of surge protector more and more receives publicity.
Chinese patent CN 201320177720.6 discloses a kind of high security surge protector, comprise be arranged at least one overvoltage protection element of shell, for by the release unit of overvoltage protection element and alternating current circuit or DC circuit or device separates, for extinguishing the arc-control device of overvoltage protection element and alternating current circuit or DC circuit or device separates electric arc that process produces.Although this patent has solved application security problem, while carrying out full mould protection, volume is larger, thereby is difficult to meet the protection requirement of miniaturization communication equipment, LED electronic equipment etc.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art; a kind of disengaging and screening arc device and the full mould protection of small size high security surge protector that makes surge protector miniaturization is provided; to reduce the volume of surge protector, and meet overvoltage protection and the Secure Application requirement of full guard pattern.
Disengaging of the present invention and screening arc device, be made up of sliding part, metal clips and spring; Described sliding part by slide block, be positioned at spring placing cylinder on slide block, be positioned at the screening arc chamber of spring placing cylinder blind end, form with the auxiliary disengaging plate that hides the support strip that bottom surface, arc chamber joins and be positioned at spring placing cylinder cylindrical shell and hide arc chamber end face, the bottom surface of described support strip is higher than the bottom surface of slide block; Described metal clips is made up of the gland of welding contact-making surface, join with the linking arm that joins of welding contact-making surface, with linking arm; When use, spring fitting is in the hole of described spring placing cylinder, and its one end contacts with spring placing cylinder barrel, its other end and the device contacts that uses disengaging with screening arc device; The gland of metal clips is arranged on to use and departs from and hide on the device of arc device, electrode or electrode pin in the device of the welding contact-making surface of metal clips and use disengaging and screening arc device weld, and the linking arm of metal clips is placed on the end face of described auxiliary disengaging plate.
In disengaging of the present invention and screening arc device, the slide block, spring placing cylinder, screening arc chamber, support strip and the auxiliary disengaging plate that form sliding part can be the assemblys of split member, also can be integrated, but preferred integral structure.Form the preferred integral structure of welding contact-making surface, linking arm and gland of metal clips.
Aerogenesis insulating material or not aerogenesis insulating material making for described sliding part, preferably make of aerogenesis insulating material, because it is cooling that the gas that aerogenesis insulating material produces carries out electric arc on the one hand, strengthen on the other hand the air-blowing effect to electric arc, can accelerate the movement velocity of electric arc to arc control device.Aerogenesis insulating material can be selected polyformaldehyde or nylon, melamine.Described metal clips can be made by sprung copper, silver and alloy thereof, and preferred elastomeric copper is done.
The full mould protection of small size high security of the present invention surge protector, comprises shell, is positioned at shell for the box body of electronic devices and components is installed, overvoltage protection element group, the disengaging of said structure and screening arc device and arc-control device, described shell is made up of chassis and upper cover, described overvoltage protection element group is arranged in the cavity of box body, is provided with two pins and third electrode in overvoltage protection element group, or is provided with three pins, or is provided with four pins, described disengaging is two covers with hiding arc device, two covers depart from identical with screening arc apparatus structure, lay respectively at the both sides of overvoltage protection element group and be arranged on box body, two covers depart from the gland that hides the metal clips in arc device respectively with the first electrode being arranged on box body, the second electrode connects, two covers depart from the welding contact-making surface that hides the metal clips in arc device overvoltage protection element group during in normal condition respectively with overvoltage protection element group in a pin welding, in overvoltage protection element group in abnormal condition and after causing described welding contact-making surface to separate with the pin of overvoltage protection element group, under the effect of described spring restoring force, make sliding part produce motion, in the time that sliding part moves to set spacing position, under the effect of the auxiliary disengaging plate of the welding contact-making surface of metal clips in sliding part away from the pin after separating with it, screening arc chamber in sliding part covers the pin after separating with metal clips welding contact-making surface, when in overvoltage protection element group, arrange be three pins or four pins time, be not connected with the third electrode being arranged on box body with the pin of the welding contact-making surface welding of metal clips, described arc-control device is two covers, and a set of lower arc control device and lower point of arc wall by arranging on described chassis forms, and another set of upper arc control device and the upper point arc wall that covers setting from above forms.
The full mould protection of small size high security of the present invention surge protector, its overvoltage protection element group has following two kinds of structures:
1, overvoltage protection element group is limiting voltage type element group, and described limiting voltage type element group is made up of at least two piezo-resistances, and limiting voltage type element group is provided with two pins and third electrode, or is provided with three pins, or is provided with four pins.
2, overvoltage protection element group is made up of limiting voltage type element group and voltage switch type element group, described limiting voltage type element group is made up of at least two piezo-resistances, limiting voltage type element group is provided with the first pin, the second pin, the 3rd pin and the 4th pin, described voltage switch type element group is made up of at least one gas discharge tube, voltage switch type element group is provided with the first pin, the second pin and third electrode, the first pin of voltage switch type element group is connected with the 4th pin of limiting voltage type element group, the second pin of voltage switch type element group is connected with the 3rd pin of limiting voltage type element group, the first pin of limiting voltage type element group, the second pin is respectively used to depart from and the welding contact-making surface welding that hides the metal clips in arc device with two covers.
The full mould protection of above-mentioned small size high security surge protector, also comprise telecommunication equipment, described telecommunication equipment comprises printed board, sensitive switch, remote signalling the first electrode, remote signalling the second electrode and bonding conductor, printed board is fixed on described chassis, sensitive switch is two, be arranged on chassis by the fixed leg arranging on described chassis respectively, two sensitive switch series windings connect, the pin of two sensitive switches is connected with printed board respectively, the first remote signalling electrode, the second remote signalling electrode is arranged on chassis and with printed board and is connected by two holddown grooves on chassis respectively, one end of bonding conductor is connected with sensitive switch, its other end is connected with printed board.
The full mould protection of small size high security of the present invention surge protector, its shell, aerogenesis insulating material or not aerogenesis insulating material making for box body, preferably make of aerogenesis insulating material.
The operation principle of the full mould protection of small size high security of the present invention surge protector:
Surge protector is after working long hours or repeatedly impacting, limiting voltage type element group (piezo-resistance) in overvoltage protection element group is deteriorated gradually, temperature raises gradually, or there is especially big overload current to pass through, the temperature that causes limiting voltage type element group (piezo-resistance) raises fast, when the pin of limiting voltage type element group with depart from while reaching the fusing of scolder or melt temperature with the temperature that hides metal clips welding contact-making surface weld in arc device, the pin of the welding contact-making surface of described metal clips and limiting voltage type element group is disconnected from each other, remove the active force to sliding part and spring apply in disengaging and screening arc device, under the effect of spring restoring force, sliding part produces motion, in the time that sliding part moves to set spacing position, under the effect of the auxiliary disengaging plate of the welding contact-making surface of metal clips in sliding part away from the pin after separating with it, screening arc chamber in sliding part covers the pin after separating with metal clips welding contact-making surface, metal clips after separating and the pin of limiting voltage type element group are carried out to electrical isolation.
In the limiting voltage type element group of composition overvoltage protection element group, during in normal condition, telecommunication equipment can arrange according to actual needs in closure or open-circuit condition, in the limiting voltage type element group of composition overvoltage protection element group in abnormal condition and after causing the welding contact-making surface of metal clips to separate with the pin of limiting voltage type element group, depart from the sliding part hiding in arc device and move under the effect of spring restoring force, the support strip arranging on sliding part promotes the swing arm on sensitive switch, stop motion in the time that sliding part moves to extreme position, the swing arm of sensitive switch is also pushed to required travel position simultaneously, cause sensitive switch to carry out state conversion, thereby make remote signalling electrode 1, 2 state is changed, operating personnel are by remote signalling electrode 1, 2 state conversion, can determine the residing state of overvoltage protection element group.
The present invention has following beneficial effect:
1, due to disengaging of the present invention with hide arc device in overvoltage protection element group in abnormal condition and after causing described welding contact-making surface to separate with the pin of overvoltage protection element group; the welding contact-making surface that can make metal clips and pin after it separates away from; can cover the pin after separating with metal clips welding contact-making surface in chamber again; thereby this device can replace the moving block in release unit and the arc-control device in patent CN 201320177720.6; can not only make to adopt the device of this device to reduce volume, and can be cost-saving.
2, disengaging of the present invention is simple with screening arc apparatus structure, is convenient to processing and fabricating.
3, surge protector of the present invention departs from and hides arc device and supporting member has been carried out to corresponding improvement owing to having used; thereby under smaller size smaller, realized the full mould defencive function of L-N, L-PE, N-PE, its volume at least can be accomplished 1/5 left and right of the full mould protection surge protector volume forming on patent CN 201320177720.6 bases.
4, experiment shows; departing from the sliding part hiding in arc device to make metal clips leave fast the pin of limiting voltage type element group; when sliding part moves to spacing position; complete after the electrical separation of metal clips and limiting voltage type element group pin; surge protector i.e. complete and alternating current circuit, DC circuit or equipment departs from; in the time that its two ends apply high-voltage large current, there will not be secondary arcing phenomenon, thereby surge protector of the present invention has high fail safe.
5, owing to being provided with telecommunication equipment in surge protector of the present invention; thereby the residing state of convenient operation personnel control overvoltage protection element group; after overvoltage protection element group breaks down, can find in time and change, guarantee the safety of protected circuit or equipment.
Brief description of the drawings
Fig. 1 is disengaging of the present invention and a kind of structural representation that hides arc device;
Fig. 2 departs from and a kind of structural representation that hides sliding part in arc device;
Fig. 3 departs from and a kind of structural representation that hides metal clips in arc device;
Fig. 4 is a kind of structural representation of the full mould protection of small size high security of the present invention surge protector housing;
Fig. 5 is a kind of structural representation on the chassis of composition shell;
Fig. 6 is a kind of stereogram of function element and compound mode thereof in the full mould of small size high security of the present invention protection surge protector;
Fig. 7 is a kind of structural representation of overvoltage protection element group in the full mould protection of small size high security of the present invention surge protector;
Fig. 8 is the rear perspective view of overvoltage protection element group in Fig. 7;
Fig. 9 is a kind of structural representation of box body in the full mould protection of small size high security of the present invention surge protector;
Figure 10 is that the box body in Fig. 9 is rotated in a clockwise direction the schematic diagram of 90 °;
Figure 11 is the fundamental diagram of the full mould protection of small size high security of the present invention surge protector, this figure has also described and has departed from and the compound mode that hides arc device, arc-control device, telecommunication equipment, in figure, the metal clips in disengaging and screening arc device and the pin of limiting voltage type element group are in connection status;
Figure 12 is the fundamental diagram of the full mould protection of small size high security of the present invention surge protector, in figure, in the metal clips in disengaging and screening arc device and the process of the pin of limiting voltage type element group in being separated;
Figure 13 is the fundamental diagram of the full mould protection of small size high security of the present invention surge protector, in figure, depart from the sliding part hiding in arc device and moved to extreme position, under the effect of the auxiliary disengaging plate of the welding contact-making surface of metal clips in sliding part, away from the pin after separating with it, the screening arc chamber in sliding part covers the pin after separating with metal clips welding contact-making surface;
Figure 14 is a kind of structural representation of telecommunication equipment.
In figure, 1-departs from and hides arc device, 11-sliding part, 111-assists disengaging plate, 112-slide block, 113-spring placing cylinder, 114-hides arc chamber, 115-support strip, 12-metal clips, 121-welds contact-making surface, 122-linking arm, 123-gland, 13-spring, 2-shell, 21-chassis, arc control device under 211-, lower point of arc wall of 212-, 213-remote signalling electrode holddown groove, 214-sensitive switch fixed leg, 22-upper cover, the upper arc control device of 221-, upper point of arc wall of 222-, 3-limiting voltage type element group, 31-limiting voltage type element group the first pin, 32-limiting voltage type element group the second pin, 33-limiting voltage type element group the 3rd pin, 34-limiting voltage type element group the 4th pin, 4-voltage switch type element group, 41-voltage switch type element group the first pin, 42-voltage switch type element group the second pin, 5-arc-control device, 6-box body, 61-chute, 62-draw-in groove, 63-buckle, 64-divider wall, 65-spring fixed column, 7-telecommunication equipment, 71-printed board, 72-sensitive switch, 721-swing arm, 73-remote signalling the first electrode, 74-remote signalling the second electrode, 75-bonding conductor, 8-the first electrode, 9-the second electrode, 10-third electrode.
Embodiment
Also by reference to the accompanying drawings disengaging of the present invention and the structure that hides the full mould protection of arc device and small size high security surge protector are described further below by embodiment.
Embodiment 1
In the present embodiment, the structure of disengaging and screening arc device as shown in Figure 1, is made up of sliding part 11, metal clips 12 and spring 13; Described sliding part 11 as shown in Figure 2, by slide block 112, be positioned at spring placing cylinder 113 on slide block, be positioned at the screening arc chamber 114 of spring placing cylinder blind end, form with the auxiliary disengaging plate 111 that hides the support strip 115 that bottom surface, arc chamber joins and be positioned at spring placing cylinder cylindrical shell and hide arc chamber end face, the bottom surface of described support strip is higher than the bottom surface of slide block, sliding part is made of nylon, is integrated; As shown in Figure 3, the gland 123 of joining by welding contact-making surface 121, with the linking arm 122 that joins of welding contact-making surface, with linking arm forms described metal clips 12, makes by sprung copper, is integrated; Described spring 13 as shown in Figure 1, is stage clip.
When use, spring 13 is arranged in the hole of described spring placing cylinder, and its one end contacts with spring placing cylinder barrel, and its other end contacts with using the box body departing from the surge protector of screening arc device; The gland 123 of metal clips is arranged on the box body of surge protector, the pin welding of limiting voltage type element group in the welding contact-making surface 121 of metal clips and surge protector, and the linking arm 122 of metal clips is placed on the end face of described auxiliary disengaging plate 111.
Embodiment 2
In the present embodiment; the structure of the full mould protection of small size high security surge protector is as shown in Fig. 4, Fig. 5, Fig. 6; comprise shell 2, be positioned at shell for the box body 6 of electronic devices and components is installed; overvoltage protection element group, departs from described in embodiment 1 and hides arc device 1, arc-control device 5 and telecommunication equipment 7.
The shape approximation of described case body 2 is in square, formed by chassis 21 and upper cover 22, make of nylon, described upper cover 22 inwalls are provided with arc control device 221 and upper point arc wall 222 (seeing Figure 11, Figure 12, Figure 13), and the inwall on described chassis 21 is provided with lower arc control device 211, divides arc wall 212, remote signalling electrode holddown groove 213 and sensitive switch fixed leg 214 (seeing Fig. 5) down.Described box body 6 use nylon are made, box body middle part is provided with the cavity that limiting voltage type element group 3 and voltage switch type element group 4 are installed, the both sides of cavity are provided with the chute 61 that sliding part is installed, the chute of cavity one side is positioned at the bottom of box body and the groove face of chute upwards, the chute of cavity opposite side is positioned at the top of box body and the groove face of chute is downward, the end of chute front end is provided with the draw-in groove 62 perpendicular to chute, the bottom land of draw-in groove is provided with buckle 63, between draw-in groove 62 and chute 61, be provided with divider wall 64, on divider wall 64, be provided with stage clip fixed leg 65 and (see Fig. 9, Figure 10).Described overvoltage protection element group is made up of limiting voltage type element group 3 and voltage switch type element group 4, described limiting voltage type element group 3 is made up of 3 piezo-resistances, be provided with the first pin 31, the second pin 32, the 3rd pin 33 and the 4th pin 34, described voltage switch type element group 4 is made up of a gas discharge tube, be provided with the first pin 41, the second pin 42 and third electrode 10, the first pin 41 of voltage switch type element group is connected with the 4th pin 34 of limiting voltage type element group, the second pin 42 of voltage switch type element group is connected and (sees Fig. 7 with the 3rd pin 33 of limiting voltage type element group, Fig. 8).Arc-control device 5 is two covers, and a set of lower arc control device 211 that arranged by described chassis and lower point of arc wall 212 form, and the another set of upper arc control device 221 that arranged by upper cover and upper point arc wall 222 form.Departing from hiding arc device 1 is two covers, and two covers depart from the structure that hides arc device sees embodiment 1.The structure of telecommunication equipment 7 as shown in figure 14, comprises printed board 71, sensitive switch 72, remote signalling the first electrode 73, remote signalling the second electrode 74 and bonding conductor 75.
The compound mode of each member and device:
Box body 6 is placed on the chassis 21 of shell, and the overvoltage protection element group that limiting voltage type element group 3 and voltage switch type element group 4 form is arranged in the cavity at box body 6 middle parts.Two covers depart from and screening arc device 1 lays respectively at the both sides of overvoltage protection element group and is arranged on box body 2, their sliding part 11 combines by corresponding chute 61 on its slide block 112 and box body respectively, the gland 123 of their metal clips respectively with the first electrode 8 being arranged in box body respective card slot 62, the second electrode 9 connects, the welding contact-making surface 121 of their metal clips respectively with the first pin 31 of limiting voltage type element group 3, the second pin 32 welds, the linking arm 122 of their metal clips is placed on respectively the end face of the auxiliary disengaging plate 111 in sliding part separately, their stage clip 13 is arranged on respectively in the hole of the spring placing cylinder 113 in sliding part separately, and its one end contacts with spring placing cylinder barrel, and its other end contacts with corresponding stage clip fixed leg 65 on box body.Printed board 71 is fixed on described chassis 21, sensitive switch 72 is two, be arranged on chassis by the fixed leg 214 arranging on described chassis 21 respectively, two sensitive switch series windings connect, their pin is connected with printed board 71 respectively, the first remote signalling electrode 73, the second remote signalling electrode 74 are arranged on chassis and with printed board 71 and are connected by two holddown grooves 213 on chassis respectively, and one end of bonding conductor 75 is connected with sensitive switch 72, and its other end is connected with printed board 71.Above-mentioned device installs the upper cover 22 of shell on bonnet, completes assembling.
In use, when overvoltage protection element group is in abnormal condition and after causing the welding contact-making surface departing from and hide metal clips in arc device 1 to separate with the pin of limiting voltage type element group 3, under the effect of spring 13 elastic restoring forces, make sliding part 11 produce motion, in the time that sliding part 11 moves to set spacing position, under the effect of the auxiliary disengaging plate 111 of the welding contact-making surface 121 of metal clips in sliding part away from the pin after separating with it, screening arc chamber 114 in sliding part covers the pin after separating with metal clips welding contact-making surface, its principle and process are shown in Figure 11, Figure 12, Figure 13.