EP3226358B1 - Time relay socket - Google Patents
Time relay socket Download PDFInfo
- Publication number
- EP3226358B1 EP3226358B1 EP15862196.1A EP15862196A EP3226358B1 EP 3226358 B1 EP3226358 B1 EP 3226358B1 EP 15862196 A EP15862196 A EP 15862196A EP 3226358 B1 EP3226358 B1 EP 3226358B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wiring
- shell
- insulated
- cover plate
- ribs
- 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.)
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Links
- 230000007704 transition Effects 0.000 claims description 23
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 13
- 230000000977 initiatory effect Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
- H01R9/2491—Terminal blocks structurally associated with plugs or sockets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
- H01R13/512—Bases; Cases composed of different pieces assembled by screw or screws
Definitions
- a structure of arc isolating ribs is generally adopted between each plug bush and the corresponding wiring end, but owing to the limitation from a structure in which the inserts are mounted on the base with jacks, a fit clearance between each arc isolating rib and the base or the bottom plate is very close to the inserts, and especially the problem on a harmful clearance near the plug bush and the wiring end is extremely prominent, thereby leading to poor insulation effect among the inserts, and said clearance may still cause generation of electric arcs.
- the intermediate transition region arc isolating ribs 16 and the corresponding conducting sheet plug bush region arc isolating ribs 13 are arranged in a staggering manner.
- the cover plate 2 in the intermediate transition region 52 is provided with guide grooves 26 for accommodating conducting sheets
- the conducting sheet plug bush region 51 of the cover plate 2 is provided with insulated ribs 23, and the guide grooves 26 and the insulated ribs 23 are arranged in a staggering manner.
- the plug bush ends 3b of the eight conducting sheets 3 are arranged against the eight jacks 14 respectively, such that pins of the plug are plugged into the corresponding plug bush ends 3b respectively from the eight jacks 14, and are electrically connected with the plug bush ends 3b.
- the shell 1 and the cover plate 2 are fixedly connected to form a cavity in which the eight conducting sheets 3 are encapsulated.
- the time relay as illustrated in drawings comprises a conducting sheet plug bush region 51, an intermediate transition region 52 and a wiring end region 53.
- There are a plurality of forms provided for a structure in which the shell 1 and the cover plate 2 are fixedly connected wherein a preferred form is as illustrated in Figs. 1-4 , where the shell 1 and the cover plate 2 are fixedly connected by adopting a buckling structure.
- the shell 1 provided with arc isolating ribs only in the conducting sheet plug bush region 51 and the intermediate transition region 52, rather than in the wiring end region 53;
- the cover plate 2 is provided with insulated baffles 22 in the conducting sheet plug bush region 51, and provided with insulated ribs 23 in the wiring end region 53, and provided with guide grooves 26 for guiding the conducting sheets, rather than any arc isolating rib, in the intermediate transition region 52.
- the intermediate transition region arc isolating ribs 16 and the corresponding conducting sheet plug bush region arc isolating ribs 13 are arranged in a staggering manner.
- Each intermediate transition region arc isolating rib 16 is wider than each conducting sheet plug bush region arc isolating rib 13. Furthermore, as illustrated in Fig. 4 , the cover plate 2 in the intermediate transition region 52 is provided with guide grooves 26 for accommodating conducting sheets, the conducting sheet plug bush region 51 of the cover plate 2 is provided with insulated ribs 23, and the guide grooves 26 and the insulated ribs 23 are arranged in a staggering manner. As can be seen from Fig.
- the height difference H refers to a height difference between each insulated baffle 22 and each wiring seat 21, that is, a height from each insulated baffle 22 to the wiring end mounting surface 2a of each wiring seat 21 (see marks in Fig. 2 );
- the length difference L refers to a length difference from each insulated baffle 22 to each wiring seat 21, that is, a length from each insulated baffle 22 to an end surface 2b of each wiring seat 21 (see marks in Fig. 2 ).
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Distribution Board (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Description
- The present invention relates to a time relay, in particular to a time relay socket.
- Document
CN202840092 U discloses a time relay socket comprising a shell, a cover plate and eight conducting sheets, wherein the shell is provided with eight jacks, each jack corresponds to one conducting sheet, and plug bush ends of the eight conducting sheets arranged against the eight jacks on the shell respectively; the shell and the cover plate are fixedly connected to form a cavity in which the eight conducting sheets are located, wherein:each end of two ends of the cover plate is provided with: four wiring seats, one cover plate screw seat; each cover plate screw seat separates four wiring seats at the same end into two groups, with two wiring seats being in each group and wiring ends of the eight conducting sheets are mounted on the eight wiring seats respectively;each of the two ends of the shell is provided with a shell screw seat, wherein the shell screw seat is located between the two hole grooves at the same end and separates the two hole grooves at the same end. - Further, the time relay is an
electronic control device which has a control system (also referred to as an input loop) and a controlled system (also referred to as an output loop) and is generally applied to an automatic control circuit. The time relay is actually configured to control a higher current with a lower current. The time relay has a socket component which is also referred to a time relay socket. The time relay socket comprises a base, a bottom plate and eight inserts, wherein the eight inserts have higher voltage differences, the base and the bottom plate are fixedly connected to form a cavity, and the eight inserts are encapsulated inside the cavity. With respect to the existing time relay socket, because of its unreasonable structure, arc isolating ribs thereof are often arranged on a shell only, or a base only. For example, when the arc isolating ribs are arranged on the shell only, the base is provided with grooves corresponding to the arc isolating ribs, where a corresponding relationship between the arc isolating ribs and arc isolating grooves is adopted completely; in addition, the arc isolating ribs on the shell are often not separated into regions, and there is no any difference for the arc isolating ribs in an conducting sheet plug bush region, an intermediate transition region and a wiring end region, where a solution that all regions are penetrated with a long rib is adopted. And, all regions on the base are also penetrated with similar arc isolating ribs, such that the problem of poor insulating property is brought to the eight inserts, and therefore, electric arcs are generated among the inserts to affect the safety level, the service life and the control reliability of the product. Based on a working principle of the time relay socket, the basic structural requirements includes: an plug bush for a contact to be plugged is arranged at one end of each insert, and each plug bush is arranged against respective jack on the base; the other end of each insert is a wiring end for a lead wire to access, and each wiring end is arranged against respective wiring seat; because eight jacks need to be densely arranged in the center of the base, the eight plug bushes need to be close to each other, such that a distance between every two adjacent plug bushes may be less than a creepage distance; because of a requirement to a wiring space, each wiring end needs to have a wider size, and therefore a distance between every two adjacent wiring ends is very small, even less than a creepage distance. In order to satisfy the insulation requirement, with respect with the existing time relay socket, a structure of arc isolating ribs is generally adopted between each plug bush and the corresponding wiring end, but owing to the limitation from a structure in which the inserts are mounted on the base with jacks, a fit clearance between each arc isolating rib and the base or the bottom plate is very close to the inserts, and especially the problem on a harmful clearance near the plug bush and the wiring end is extremely prominent, thereby leading to poor insulation effect among the inserts, and said clearance may still cause generation of electric arcs. - The existing time relay socket adopts a structure of arranging arc isolating ribs and arc isolating grooves near the plug bushes of the inserts to reduce the damage degree of harmful clearances. But such structure has the following defects in that: owing to the reasons of technology, each arc isolating groove may not be made to be deep, an area of staggered overlap between each arc isolating rib and each arc isolating groove is very small, and therefore the structure in which the arc isolating ribs and the arc isolating grooves are arranged near the plug bushes is still not ideal for the insulation effect among the plug bushes, or to say, the effect of reducing the damage degree of harmful clearances is limited. In addition, the butt-joint plugging manner between the arc isolating ribs and the arc isolating grooves (the top edge of each arc isolating rib is aligned and plugged to each arc isolating groove), under the limitation from a forming technology of the base and the bottom plate, is difficult to ensure the alignment precision of the arc isolating ribs and the arc isolating grooves (unless the manufacturing cost of the base and the bottom plate is greatly increased), however, the alignment precision is directly related to the assembly efficiency of the time relay socket and the scrappage rate of parts. In order to not affect the assembly efficiency and reduce the scrappage rate, the fit clearance between each arc isolating rib and each arc isolating groove cannot be small, and the increase of the fit clearance is not conductive to the insulation among the plug bushes obviously.
- There never has been no an ideal solution for the existing time relay socket in terms of reducing the damage of harmful clearances near the wiring ends of the inserts, with the reason possibly residing in that: it is very difficult to form a solution with good practicability in terms of structural design and manufacturing technology.
- An objective of the present invention is to overcome the defects of the prior art and provides a time relay socket. According to the time relay socket, by means of the improvement to a wiring seat structure, harmful clearances possibly initiating electric arcs near wiring ends of conducting sheets is avoided, and meanwhile due to the adoption of a structure of arc isolating ribs that are mutually plugged in a staggering manner, harmful clearances possibly initiating electric arcs near jacks is avoided, and therefore the safety level of the product is effectively promoted, the service life of the product is prolonged, the control reliability of the product is improved, and the assembly between the shell and the cover plate can also be facilitated. In order to insulate electric arcs and provide a time relay socket with strong voltage resistance and high safety performance, the present invention adopts the following technical solutions.
- A time relay socket comprises a
shell 1, acover plate 2, and eight conductingsheets 3, wherein theshell 1 is provided with eightjacks 14, eachjack 14 corresponding to one conductingsheet 3;plug bush ends 3b of the eight conductingsheets 3 are arranged against the eightjacks 14 on theshell 1; theshell 1 and thecover plate 2 are fixedly connected to form a cavity in which the eight conductingsheets 3 are located. Each end of two ends of thecover plate 2 is provided with: fourwiring seats 21, one coverplate screw seat 25, and two insulatedbaffles 22; each coverplate screw seat 25 separates fourwiring seats 21 at the same end into two groups, with twowiring seats 21 being in each group; the twowiring seats 21 of each group are separated by a raised insulatedbaffle 22 on thecover plate 2, andwiring ends 3a of the eight conductingsheets 3 are mounted on the eightwiring seats 21 respectively. Each of the two ends of theshell 1 is provided with: twosunken hole grooves 11 and ashell screw seat 15, wherein theshell screw seat 15 is located between the twohole grooves 11 at the same end and separates the twohole grooves 11 at the same end, and a sunken space of eachhole groove 11 is accommodated with a group of twowiring seats 21 provided with one insulatedbaffle 22 and twowiring ends 3a. An insulated baffle is arranged on the cover plate of each wiring end. The solution in which two wiring seats share one hole groove of the shell enhances an isolation effect on electric arcs near the wiring ends of the conducting sheets, such that the voltage resistance of the product is improved. - Furthermore, as a more preferred solution, a conducting sheet plug bush region
arc isolating rib 13 is arranged between every twojacks 14 of the eightjacks 14 on theshell 1, thecover plate 2 is provided with eight insulatedribs 23 for separating theplug bush ends 3b of the eight conductingsheets 3, each conducting sheet plug bush regionarc isolating rib 13 on the shell only corresponds to one insulatedrib 23 on the cover plate, and the conducting sheet plug bush regionarc isolating ribs 13 on the shell and the insulatedribs 23 corresponding thereto on the cover plate are mutually parallel and are mutually plugged in a staggering manner. - The time relay comprises a conducting sheet
plug bush region 51, anintermediate transition region 52 and awiring end region 53; theshell 1 is provided with arc isolating ribs only in the conducting sheetplug bush region 51 and theintermediate transition region 52, rather than thewiring end region 53. In other words, the arc isolating ribs include: plug bush regionarc isolating ribs 13 in the conducting sheetplug bush region 51, intermediate transition regionarc isolating ribs 16 in theintermediate transition region 52 and insulatedbaffles 22 in thewiring end region 53. The insulatedbaffles 22 in thewiring end region 53 are arranged on the cover plate, the intermediate transition regionarc isolating ribs 16 in theintermediate transition region 52 are arranged on the shell, and therefore the sealing property and the isolation property are further improved, the problem of the harmful clearances possibly initiating electric arcs near the wiring ends of the conducting sheets is solved, and the insulation effect is good. - As a preferred solution, the intermediate transition region
arc isolating ribs 16 and the corresponding conducting sheet plug bush regionarc isolating ribs 13 are arranged in a staggering manner. - Further, each intermediate transition region
arc isolating rib 16 is wider than each conducting sheet plug bush regionarc isolating rib 13. - Furthermore, the
cover plate 2 in theintermediate transition region 52 is provided withguide grooves 26 for accommodating conducting sheets, the conducting sheetplug bush region 51 of thecover plate 2 is provided with insulatedribs 23, and theguide grooves 26 and the insulatedribs 23 are arranged in a staggering manner. - When the
outer shell 1 and thecover plate 2 are connected, the conducting sheet plug bush regionarc isolating ribs 13 and the insulated ribs corresponding thereto on thecover plate 2 may be positioned at different sides, or staggered from left to right or staggered from right to left. But as a preferred solution, all the conducting sheet plug bush regionarc isolating ribs 13 and the insulatedribs 23 corresponding thereto are located at the same side. - Preferably, two opposite side surfaces of each
hole groove 11 on theshell 1 are respectively provided withplug grooves 12 which are in plugging fit with the insulatedbaffles 22. Furthermore, eachhole groove 11 on theshell 1 is of a penetrated structure preferably, and the insulatedbaffle 22 accommodated in eachhole groove 11 extend out of theshell 1 from the interior of thehole groove 11 to form an insulated baffle for a lead wire to access. More preferably, a descendingstep 27 is arranged at each of two sides of the upper edge of each insulatedbaffle 22 of thecover plate 2, wherein the lower edge of each step is plugged into thecorresponding plug groove 12 of theshell 1, and the upper edge of each step can extend out of the shell. - Preferably, each insulated
baffle 22 is higher than a wiringend mounting surface 2a of eachwiring seat 21, and longer than an end surface 2b of eachwiring seat 21. A height difference H capable of isolating electric arcs is formed between each insulatedbaffle 22 and the wiringend mounting surface 2a of eachwiring seat 21, wherein the height difference H is 0.5 to 1 time of a creepage distance; a length difference L capable of isolating electric arcs is formed between each insulatedbaffle 22 and the end surface 2b of eachwiring seat 21, wherein the length difference L is 0.5 to 1 time of a creepage distance. - Preferably, a height size of an overlap part formed when the conducting sheet plug bush region
arc isolating ribs 13 and the insulatedribs 23 are mutually plugged in a staggering manner is 0.5 to 1 time of a creepage distance. - By means of a series of above technical solutions, the isolating property to electric arcs is improved, not only a solution is provided to perform electric arc blocking between the electric arc conducting sheet plug bush region and the intermediate transition region, but also a solution is provided to perform electric arc blocking between the
intermediate transition region 52 and thewiring end region 52. Moreover, due to the adoption of the technical solutions of the present invention, both the isolating effect among wiring ends in the wiring end region and the isolating effect among plug bush ends in the electric arc conducting sheet plug bush region are improved. Owing to the staggered arrangement structure, the shell can be well fit with the cover plate, such that the assembly is more convenient and compact, harmful clearances possibly initiating electric arcs are avoided, the safety level and the voltage resistance level of the product are effectively promoted, the service life of the product is prolonged, the control reliability of the product is improved, and meanwhile the wiring convenience is achieved. -
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Fig. 1 is a schematic stereogram of an overall structure of the embodiment of the time relay socket of the present invention. -
Fig. 2 is an exploded view of the embodiment of the time relay socket of the present invention as illustrated inFig. 1 . -
Fig. 3 is a planer structural schematic drawing of shell parts of the embodiment of the time relay socket of the present invention as illustrated inFig. 1 . -
Fig. 4 is a planer structural schematic drawing of cover plate parts of the embodiment of the time relay socket of the present invention as illustrated inFig. 1 . - Specific embodiments of the time relay socket of the present invention are further illustrated as below in conjunction with the embodiments provided by
Figs. 1 to 4 . The time relay socket of the present invention is not limited to the description in the following embodiments. - Referring to
Figs. 1-4 , the time relay socket of the present invention comprises ashell 1, acover plate 2 and eight conductingsheets 3. Theshell 1 is provided with eightjacks 14 for plugs (not shown in drawings) to plug. Each conductingsheet 3 adopts a known structure, wherein one end of the conducting sheet is awiring end 3a for a lead wire (not shown in drawings) to assess, and the other end of the conducting sheet is aplug bush end 3b for pins (not shown in drawings) of a plug to access and connect. Theplug bush ends 3b of the eight conductingsheets 3 are arranged against the eightjacks 14 respectively, such that pins of the plug are plugged into the correspondingplug bush ends 3b respectively from the eightjacks 14, and are electrically connected with theplug bush ends 3b. Theshell 1 and thecover plate 2 are fixedly connected to form a cavity in which the eight conductingsheets 3 are encapsulated. The time relay as illustrated in drawings comprises a conducting sheetplug bush region 51, anintermediate transition region 52 and awiring end region 53. There are a plurality of forms provided for a structure in which theshell 1 and thecover plate 2 are fixedly connected, wherein a preferred form is as illustrated inFigs. 1-4 , where theshell 1 and thecover plate 2 are fixedly connected by adopting a buckling structure. - Each of two ends of the
cover plate 2 is provided with fourwiring seats 21, one coverplate screw seat 25 and two insulatedbaffles 22, and there are eightwiring seats 21, two coverplate screw seats 25 and four insulatedbaffles 22 at two ends in total. Each coverplate screw seat 25 separates fourwring seats 21 into two groups, each group including twowiring seats 21, i.e., each coverplate screw seat 25 separates the fourwiring seats 21 at one end into two groups with twowiring seats 21 in one group, and there are four groups of wiring seats at two ends in total. The twowiring seats 21 in each group are separated by one insulatedbaffle 22, i.e., the twowiring seats 21 in each of four groups are separated by one insulatedbaffle 22, that is, each of the four insulatedbaffles 22 are arranged between the two wiring seats of each of four groups, such that a structure of separating thewiring seats 21 as illustrated inFig. 4 is formed at each end of thecover plate 2, according to an arrangement sequence from left to right: thewiring seat 21, theinsulated baffle 22, thewiring seat 21, the coverplate screw seat 25, thewiring seat 21, theinsulated baffle 22 and thewiring seat 21. Thewiring ends 3a of the eight conductingsheets 3 are mounted on the eightwiring seats 21 respectively, i.e., thewiring ends 3a of the eight conductingsheets 3 are mounted on wiringend mounting surfaces 2a of the eightwiring seats 21 respectively, and wiring holes in thewiring ends 3a are aligned to wiring holes in thewiring seats 21 to realize guide access. After the wiring ends 3a of the conductingsheets 3 are mounted onrespective wiring seats 21 respectively, the wiring ends 3a on the two conductingsheets 3 on the same group ofwiring seats 21 are isolated and insulated by theinsulated baffle 22, and the wiring ends 3a of the two conductingsheets 3, close to the coverplate screw seat 25, on two groups ofwiring seats 21 at the same end are also isolated and insulated by the coverplate screw seat 25. Because each insulated baffles 22 is located on a cover body, rather than the shell, theinsulated baffle 22 cannot generate gaps on the surface of the cover body to play a role of isolating electric arcs, and especially when theinsulated baffle 22, the coverplate screw seat 25 and thewiring seat 21 are of an integrally formed piece, theinsulated baffle 22, the coverplate screw seat 25 and thewiring seat 21 are combined seamlessly to further avoid harmful clearances possibly initiating electric arcs near thewiring seats 3a of the conductingsheets 3. - As illustrated in
Figs. 2-4 , theshell 1 provided with arc isolating ribs only in the conducting sheetplug bush region 51 and theintermediate transition region 52, rather than in thewiring end region 53; thecover plate 2 is provided withinsulated baffles 22 in the conducting sheetplug bush region 51, and provided withinsulated ribs 23 in thewiring end region 53, and provided withguide grooves 26 for guiding the conducting sheets, rather than any arc isolating rib, in theintermediate transition region 52. As a preferred solution illustrated inFig. 3 , the intermediate transition regionarc isolating ribs 16 and the corresponding conducting sheet plug bush regionarc isolating ribs 13 are arranged in a staggering manner. Each intermediate transition regionarc isolating rib 16 is wider than each conducting sheet plug bush regionarc isolating rib 13. Furthermore, as illustrated inFig. 4 , thecover plate 2 in theintermediate transition region 52 is provided withguide grooves 26 for accommodating conducting sheets, the conducting sheetplug bush region 51 of thecover plate 2 is provided withinsulated ribs 23, and theguide grooves 26 and theinsulated ribs 23 are arranged in a staggering manner. As can be seen fromFig. 4 , a condition under which a width d of each coverplate screw seat 25 is designed to be larger is satisfied, and the size of the width D generally can arrive at the requirement on a creepage distance, therefore, ideal insulating and arc isolating effects can be achieved as long as the coverplate screw seat 25 is higher than thewiring end 3a of each conductingsheet 3; owing to the limitation from an overall size, the thickness S of eachinsulated baffle 22 cannot be designed to be larger, and the size of the thickness S generally cannot arrive at a requirement on a creepage distance, therefore, it is necessary to perform an optimized design on the height difference H and the length difference L of eachinsulated baffle 22, in order to prevent electric arcs from passing through the insulated baffles possibly in a height direction and an extension direction. The height difference H refers to a height difference between eachinsulated baffle 22 and eachwiring seat 21, that is, a height from eachinsulated baffle 22 to the wiringend mounting surface 2a of each wiring seat 21 (see marks inFig. 2 ); the length difference L refers to a length difference from eachinsulated baffle 22 to eachwiring seat 21, that is, a length from eachinsulated baffle 22 to an end surface 2b of each wiring seat 21 (see marks inFig. 2 ). Therefore, in order to ensure that the electric arcs can possibly pass through theinsulated baffles 22 in a height direction and an extension direction, a preferred solution lies in that: eachinsulated baffle 22 is higher than the wiringend mounting surface 2a of eachwiring seat 21, and has a height difference H capable of isolating electric arcs; eachinsulated baffle 22 is longer than the end surface 2b of eachwiring seat 21, and has a length difference L capable of isolating electric arcs. The larger the sizes of the height difference H and the length difference L, the better the insulating and arc isolating effects. But space wastes will be caused if the sizes are too large, and therefore the preferred numerical range is: the height difference H being 0.5 to 1 time of the creepage distance; the length difference S being 0.5 to 1 time of the creepage distance. - Referring to
Figs. 1-4 , each of two ends of theshell 1 is provided with twosunken hole grooves 11 and ashell screw seat 15, wherein theshell screw seat 15 is located between the twohole grooves 11 at the same end and separates the two hole grooves at thesame end 11, i.e., there are fourhole grooves 11 at two ends of theshell 1 in total. The fourhole grooves 11 correspond to four groups ofwiring seats 21 at two ends of thecover plate 2 respectively, or to say, onehole groove 1 corresponds to one group of wiring seats 21. Each hole groove 11 is accommodated with a group of two wiring seats 21 that are provided with one insulated baffle 22 and two wiring ends 3a, wherein the specific mounting structure is as follows: eight conducting sheets 3 are mounted on the cover plate 2 respectively, and eight wiring ends 3a are mounted on wiring end mounting surfaces 2a of the eight wiring seats 21 on the cover plate 2 respectively; eight plug bush ends 3b are mounted on fixed positions, are arranged against the eight jacks 14 on the shell 1, on the cover plate 2 respectively; the shell 1 is buckled to the cover plate 2 from a direction of the conducting sheets 3, such that the conducting sheets 3 are buckled inside a cavity between the shell 1 and the cover plate 2, and the four group of wiring seats 21 (each group of wiring seats 21 is provided with two wiring seats 21 and one insulated baffle 22, and there are two wiring ends 3a on the two wiring seats 21 in total) are accommodated (also referred to as embedded) inside four hole grooves 11 of the shell 1 respectively; meanwhile, eight plug bush ends 3b of eight conducting sheets 3 are arranged against eight jacks 14 on the shell 1 respectively; of course, the shell 1 and the cover plate 2 are fixedly connected, such that the eight conducting sheets 3 are located in the cavity. The cavity is arranged inside theshell 1 and inside thecover plate 2 respectively with a well-known method. The cavity structure also has a function of positioning the eight conductingsheets 3 inside the cavity, and meanwhile a penetrated structure (not shown in drawings) by which the eight conductingsheets 3 can be communicated to the eightwiring seats 21 in the fourhole grooves 11 respectively is also provided. - To further improve the insulating and arc isolating effects, a preferred structure is as illustrated in
Figs. 1-3 , wherein each of two opposite side surfaces of eachhole groove 11 on theshell 1 is provided with aplug groove 12 which is in plugging fit with eachinsulated baffle 22. Of course, by means of plugging fit between eachinsulated baffle 22 and theplug groove 12 on theshell 1, the insulating and arc isolating performances of eachinsulated baffle 22 between the wiring ends 3a of the two conductingsheets 3 on the wiring seats 21 in one group are more reliable. Meanwhile, the connection with ideal connection strength can be established between eachinsulated baffle 22 and theshell 1. A descendingstep 27 is arranged at each of two sides of the upper edge of eachinsulated baffle 22, for example, theinsulated baffle 22 as illustrated inFig. 2 is inversely T-shaped, and each of two ends of the upper edge of theinsulated baffle 22 is sunken to form a step. - In order to ensure that a lead wire can access the
wiring end 3a of each conductingsheet 3 from outside, a through hole is formed in a position, corresponding to eachwiring end 3a, of theshell 1. Because a series of special structures includingwiring seats 21, wiring ends 3a,hole grooves 11,insulated baffles 22, pluggrooves 12 and the like are adopted in the present invention, the following preferred structure is possible to be realized: eachhole groove 11 of theshell 1 is of a penetrated structure, and eachinsulated baffle 22 accommodated inside eachhole groove 11 extend out of theshell 11 from the interior of thehole groove 11 to form an insulated baffle to which a lead wire accesses. By means of the penetrated structure of eachhole groove 11, eachwiring end 3a can be exposed out of theshell 1 to facilitate access of a lead wire, and eachinsulated baffle 22 is also correspondingly exposed out of theshell 11, such that the size of the height difference H of eachinsulated baffle 22 is designed to be larger; each insulated baffles 22 may also be not only configured to perform isolating and arc isolating among the wiring ends 3a of the conductingsheets 3, but also perform insulating and arc isolating among lead wires. Owing to such structure, harmful clearances caused by combination of theshell 1 and thecover plate 2 can be reduced. - There is no exception to the present invention. In order to improve insulating and arc isolating effects between plug bush ends 3b of the conducting
sheets 3, there is a need to adopt a structure of arc isolating ribs. Compared with the prior art, the arc isolating ribs of the present invention are different from existing arc isolating ribs in structure and effect, and the specific structure is as illustrated inFigs. 1-4 : the conducting sheet plug bush regionarc isolating rib 13 is arranged between every twojacks 14 of the eightjacks 14 in theshell 1, thecover plate 2 is provided with eightinsulated ribs 23 for separating the plug bush ends 3b of the eight conductingsheets 3, and the conducting sheet plug bush regionarc isolating ribs 13 and theinsulated ribs 23 are parallel and mutually plugged in a staggering manner. For example, in the solution as illustrated inFig. 3 andFig. 4 , all the conducting sheet plug bush regionarc isolating ribs 13 and theinsulated ribs 23 corresponding thereto are located at the same side when theshell 1 is connected with thecover plate 2. This staggered mutually plugging structure has the advantages that: each conducting sheet plug bush regionarc isolating rib 13 and eachinsulated rib 23 can form an overlap of a larger size in a height direction, or to say, a height size of a larger overlap part can be obtained between each conducting sheet plug bush regionarc isolating rib 13 and eachinsulated rib 23, and a full double-layer overlapped structure can be realized if necessary, without affecting the assembly convenience between theshell 1 and thecover plate 2, because the trouble caused by alignment is avoided. In order to achieve better insulating and arc isolating effects, a preferred solution lies in that: a height size of an overlap part formed when the conducting sheet plug bush regionarc isolating ribs 13 and theinsulated ribs 23 are mutually plugged in a staggering manner is 0.5 to 1 time of a creepage distance.
Claims (12)
- A time relay socket, wherein said time relay socket comprises a shell (1), a cover plate (2) and eight conducting sheets (3), wherein the shell (1) is provided with eight jacks (14), each jack (14) corresponds to one conducting sheet (3), and plug bush ends (3b) of the eight conducting sheets (3) arranged against the eight jacks (14) on the shell (1) respectively; the shell (1) and the cover plate (2) are fixedly connected to form a cavity in which the eight conducting sheets (3) are located, wherein:each end of two ends of the cover plate (2) is provided with: four wiring seats (21), one cover plate screw seat (25), and two insulated baffles (22); each cover plate screw seat (25) separates four wiring seats (21) at the same end into two groups, with two wiring seats (21) being in each group; the two wiring seats (21) of each group are separated by a raised insulated baffle (22) on the cover plate (2), and wiring ends (3a) of the eight conducting sheets (3) are mounted on the eight wiring seats (21) respectively;each of the two ends of the shell (1) is provided with: two sunken hole grooves (11) and a shell screw seat (15), wherein the shell screw seat (15) is located between the two hole grooves (11) at the same end and separates the two hole grooves (11) at the same end, and a sunken space of each hole groove (11) is accommodated with a group of two wiring seats (21) provided with one insulated baffle (22) and two wiring ends (3a).
- The time relay socket according to claim 1, wherein a conducting sheet plug bush region arc insulating rib (13) is arranged between every two jacks (14) of the eight jacks (14) on the shell (1), the cover plate (2) is provided with eight insulated ribs (23) for separating the plug bush ends (3b) of the eight conducting sheets (3), each conducting sheet plug bush region arc insulating rib (13) on the shell only corresponds to one insulated rib (23) on the cover plate, and the conducting sheet plug bush region arc isolating ribs (13) on the shell and the insulated ribs (23) corresponding thereto on the cover plate are mutually parallel and are mutually plugged in a staggering manner.
- The time relay socket according to claim 1, comprising a conducting sheet plug bush region (51), an intermediate transition region (52) and a wiring end region (53); the shell (1) is provided with arc isolating ribs only in the conducting sheet plug bush region (51) and the intermediate transition region (52), rather than in the wiring end region (53); the arc isolating ribs (16) in the intermediate transition region and the arc isolating ribs (13) in the conducting sheet plug bush region corresponding thereto are arranged in a staggering manner.
- The time relay socket according to claim 3, wherein the cover plate (2) in the intermediate transition region (52) is provided with guide grooves (26) for accommodating conducting sheets, the conducting sheet plug bush region (51) of the cover plate (2) is provided with insulated ribs (23), and the guide grooves (26) and the insulated ribs (23) are arranged in a staggering manner.
- The time relay socket according to claim 3, wherein each intermediate transition region arc isolating ribs (16) is wider than each conducting sheet plug bush region arc isolating rib (13).
- The time relay socket according to claim 2 or 4, wherein all the conducting sheet plug bush region arc isolating ribs (13) and the insulated ribs (23) corresponding thereto are located at the same side when the shell (1) is connected with the cover plate (2).
- The time relay socket according to claim 1, wherein each of two opposite side surfaces of each hole groove (11) on the shell (1) is provided with a plug groove (12) which is in plugging fit with each insulated baffle (22).
- The time relay socket according to claim 1, wherein each insulated baffle (22) is higher than a wiring end mounting surface (2a) of each wiring seat (21), and longer than an end surface (2b) of each wiring seat (21).
- The time relay socket according to claim 1, wherein a descending step (27) is arranged at each of two sides of the upper edge of each insulated baffle (22).
- The time relay socket according to claim 1, wherein each hole groove (11) of the shell (1) is of a penetrated structure, and the insulated baffle (22) accommodated in each hole groove (11) extends out of the shell (1) from the interior of the hole groove (11) to form an insulated baffle to which a lead wire access.
- The time relay socket according to claim 2, wherein a height size of an overlap part when the conducting sheet plug bush region arc isolating ribs (13) and the insulated ribs (23) are mutually plugged in a staggering manner is 0.5 to 1 time of a creepage distance.
- The time relay socket according to claim 8, wherein a height difference H capable of isolating electric arcs is formed between each of the insulated baffle (22) and the wiring end mounting surface (2a) of each wiring seat (21), wherein the height difference H is 0.5 to 1 time of a creepage distance; a length difference L capable of isolating electric arcs is formed between each of the insulated baffles (22) and an end surface (2b) of each wiring seat (21), wherein the length difference L is 0.5 to 1 time of a creepage distance.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410681845.1A CN104505655B (en) | 2014-11-24 | 2014-11-24 | Time relay socket |
PCT/CN2015/095121 WO2016082715A1 (en) | 2014-11-24 | 2015-11-20 | Time relay socket |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3226358A1 EP3226358A1 (en) | 2017-10-04 |
EP3226358A4 EP3226358A4 (en) | 2018-07-25 |
EP3226358B1 true EP3226358B1 (en) | 2019-10-30 |
Family
ID=52947386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15862196.1A Active EP3226358B1 (en) | 2014-11-24 | 2015-11-20 | Time relay socket |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3226358B1 (en) |
CN (1) | CN104505655B (en) |
TN (1) | TN2017000219A1 (en) |
WO (1) | WO2016082715A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104505655B (en) * | 2014-11-24 | 2017-01-18 | 浙江正泰电器股份有限公司 | Time relay socket |
CN107204531B (en) * | 2016-11-14 | 2023-08-04 | 秉岳电气(上海)有限公司 | Power supply connector and socket thereof |
CN107275813B (en) * | 2017-07-21 | 2019-08-27 | 中山大洋电机股份有限公司 | A kind of junction block |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10289742A (en) * | 1997-04-15 | 1998-10-27 | Matsushita Electric Works Ltd | Relay terminal block |
JP2003308902A (en) * | 2002-04-12 | 2003-10-31 | Omron Corp | Electric equipment connecting terminal |
CN201000557Y (en) * | 2006-09-30 | 2008-01-02 | 浙江工业大学 | Timing control device socket |
KR100973357B1 (en) * | 2008-01-16 | 2010-07-30 | 이원재 | Relay socket structure |
CN202094394U (en) * | 2011-04-20 | 2011-12-28 | 厦门宏远达电器有限公司 | Relay socket with indicating lamp |
CN202840092U (en) * | 2012-10-25 | 2013-03-27 | 浙江欣大继电器有限公司 | Time relay socket |
CN104505655B (en) * | 2014-11-24 | 2017-01-18 | 浙江正泰电器股份有限公司 | Time relay socket |
CN204349073U (en) * | 2014-11-24 | 2015-05-20 | 浙江正泰电器股份有限公司 | A kind of time relay socket |
-
2014
- 2014-11-24 CN CN201410681845.1A patent/CN104505655B/en active Active
-
2015
- 2015-11-20 EP EP15862196.1A patent/EP3226358B1/en active Active
- 2015-11-20 TN TN2017000219A patent/TN2017000219A1/en unknown
- 2015-11-20 WO PCT/CN2015/095121 patent/WO2016082715A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN104505655A (en) | 2015-04-08 |
WO2016082715A1 (en) | 2016-06-02 |
EP3226358A4 (en) | 2018-07-25 |
EP3226358A1 (en) | 2017-10-04 |
CN104505655B (en) | 2017-01-18 |
TN2017000219A1 (en) | 2018-10-19 |
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