CN114429871B - Moving contact pressure holding structure, moving contact assembly and dual power conversion switch - Google Patents
Moving contact pressure holding structure, moving contact assembly and dual power conversion switch Download PDFInfo
- Publication number
- CN114429871B CN114429871B CN202011180672.7A CN202011180672A CN114429871B CN 114429871 B CN114429871 B CN 114429871B CN 202011180672 A CN202011180672 A CN 202011180672A CN 114429871 B CN114429871 B CN 114429871B
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- movable contact
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- 230000009977 dual effect Effects 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 title 1
- 230000014759 maintenance of location Effects 0.000 abstract description 10
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
- H01H1/225—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member the supporting member being pivotable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
- H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/018—Application transfer; between utility and emergency power supply
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- Contacts (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Push-Button Switches (AREA)
Abstract
A moving contact pressure holding structure acts on a moving contact of a dual power supply change-over switch, wherein the moving contact pressure holding structure comprises at least one pair of spring holders and at least one pair of springs, corresponding two spring holders of the at least one pair of spring holders are mounted in a staggered manner relative to each other, the two spring holders are arranged to respectively mount two springs of the at least one pair of springs between the two spring holders in a parallel manner, and the moving contact is held between the two spring holders and is positioned between the two springs. A moving contact assembly comprising a moving contact pressure retention structure as described above. A dual power transfer switch comprising a moving contact pressure retaining structure as described above.
Description
Technical Field
The present disclosure relates to a moving contact pressure maintaining structure, and more particularly, to a pressure maintaining structure of a moving contact for a dual power transfer switch (ATS). The present disclosure also relates to a moving contact assembly comprising a moving contact pressure retention structure as described above. The present disclosure further relates to a dual power transfer switch including the moving contact pressure maintaining structure as described above.
Background
The moving contact of the dual power transfer switch (ATS) has a bi-directional contact so as to be able to contact a first stationary contact of a first power source and a second stationary contact of a second power source. The currently used moving contact pressure maintaining mechanism generally comprises two independent elastic piece devices respectively aiming at two contacts, which causes the problems of large occupied space and unstable contact pressure, particularly when the contact surface (silver point) of the moving contact becomes thin (i.e. overtravel becomes smaller) due to ablation, the change of the contact pressure is often larger, and the mechanical performance and the electrical performance of the dual-power transfer switch are affected.
In order to improve rated through-current capability and short-time withstand current performance of an ATS, a plurality of moving contacts are usually required to be installed side by side, and when the ATS work, wear of contact surfaces (silver points) of different moving contacts and fixed contacts is different, so that contact pressure of each moving contact is required to be independent of each other, and electric performance of each moving contact and fixed contact is ensured to be basically consistent, so that more stable and reliable ATS are obtained.
Disclosure of Invention
To address one or more of the deficiencies in the prior art, a moving contact pressure retention structure is presented according to one aspect of the present disclosure that acts on a moving contact of a dual power transfer switch.
The moving contact pressure holding structure includes at least one pair of spring holders and at least one pair of springs.
Corresponding two spring holders of the at least one pair of spring holders are mounted together staggered with respect to each other.
The two spring holders are arranged to mount two springs of the at least one pair of springs in parallel between the two spring holders, respectively.
The moving contact is held between the two spring holders and between the two springs.
The parallel connection of the springs enables the installation space to be small and compact, a plurality of moving contacts can be installed side by side, contact pressures of the moving contacts are mutually independent, and rated current capacity and short-time tolerance performance of the ATS are greatly improved.
According to the above aspect of the present disclosure, the at least one pair of spring holders includes a first spring holder and a second spring holder having the same structure and the same size.
The at least one pair of springs includes a first spring and a second spring.
According to the above aspects of the present disclosure, the first spring retainer includes a first base, a first L-shaped flange, and a first U-shaped portion.
The first L-shaped flange and the first U-shaped portion are at and extend from respective ends of the first base portion.
The first base defines an elongated first through hole therein.
According to the above aspects of the present disclosure, the first base portion is provided with a first stepped portion on a side thereof adjacent to the first L-shaped burring.
The first base is provided with a first slot on its side adjacent to the first U-shaped portion.
The first slot is between the first U-shaped portion and the first base.
According to the above aspects of the present disclosure, the second spring retainer includes a second base portion, a second L-shaped flange, and a second U-shaped portion.
The second L-shaped flange and the second U-shaped portion are at and extend from respective ends of the second base portion.
The second base defines an elongated second through hole therein.
According to the above aspects of the present disclosure, the second base portion is provided with a second stepped portion on a side thereof adjacent to the second L-shaped burring.
The second base is provided with a second slot on its side adjacent to the second U-shaped portion.
The second slot is between the second U-shaped portion and the second base.
According to the above aspects of the present disclosure, when the first and second spring holders are mounted alternately with respect to each other, the first and second steps can be brought together in sliding contact with respect to each other, the second L-shaped flange is in the first through hole, the first L-shaped flange is in the second through hole, the opening of the first U-shaped portion faces the second base, and the opening of the second U-shaped portion faces the first base.
According to the above aspects of the present disclosure, one end of the first spring abuts against the first spring holder.
The other end of the first spring abuts against and is guided by the second L-shaped flange.
One end of the second spring is abutted against the second spring retainer.
The other end of the second spring abuts against and is guided by the first L-shaped flange.
According to the above aspects of the present disclosure, the movable contact may pass through the first and second through holes and be mounted between the first and second L-shaped flanges.
When the moving contact is in a non-stressed state, the width of the moving contact is equal to the distance between the first L-shaped flanging and the second L-shaped flanging, and the moving contact cannot swing freely relative to the first L-shaped flanging and the second L-shaped flanging.
According to the various aspects of the present disclosure, the first slotted edge retains the first spring along its length.
The second notched edge holds the second spring along its length.
According to the above aspects of the present disclosure, the first spring is located between the first U-shaped portion and the first base.
The second spring is between the second U-shaped portion and the second base.
And the grooves are formed in the spring retainers, so that the inner cavity space of the spring retainers is increased, the total width W of the spring retainers is reduced, and the installation space is saved. Meanwhile, the inner cavity space can enable each spring to be limited, so that each spring is prevented from falling off.
According to another aspect of the present disclosure, a moving contact assembly is presented, wherein the moving contact assembly comprises at least one moving contact, at least one moving contact pressure retention structure as described above, and a moving contact bracket.
The moving contact pressure holding structure holds the moving contact therein.
The moving contact pressure maintaining structure is arranged in the moving contact support.
According to another aspect of the disclosure, the moving contact is mounted on the moving contact bracket through a pin shaft.
And a bracket slot is arranged below the moving contact bracket, and the width of the bracket slot is larger than that of the moving contact, so that the moving contact can swing around the pin shaft in the bracket slot.
According to the above-described other aspect of the present disclosure, the first spring holder of the movable contact pressure holding structure abuts against the movable contact bracket at its end near the first U-shaped portion.
The second spring holder of the moving contact pressure holding structure abuts against the moving contact bracket at its end close to the second U-shaped portion.
According to another aspect of the disclosure, the moving contact assembly further includes a stopper.
The limiting piece is provided with a buckle.
The movable contact support is provided with a clamping groove.
The limiting piece is arranged on the moving contact support and cannot fall off from the moving contact support through the matching of the clamping buckle and the clamping groove, and the limiting piece is arranged to span the first spring retainer and the second spring retainer, so that the first spring retainer and the second spring retainer cannot fall off from the moving contact support.
According to the disclosure, the first spring retainer and the second spring retainer are alternately installed in and restrained by the moving contact bracket. One end of the first spring is abutted against the first spring retainer, and the other end of the first spring is abutted against and guided by the second L-shaped flange. One end of the second spring is abutted against the second spring retainer, and the other end of the second spring is abutted against and guided by the first L-shaped flange. The moving contact is arranged between the first L-shaped flanging and the second L-shaped flanging. When the moving contact moves towards one direction (for example, leftwards), the moving contact pushes the second spring retainer to move leftwards (displacement is the same), and as the first spring retainer is fixed due to the limit of the moving contact support, the second spring retainer can push the first spring and the second spring to compress at the same time, and the compression amount of the two springs is the same as the displacement of the second spring retainer. At this time, the restoring force (namely, the contact pressure when contacting with the fixed contact) of the moving contact is simultaneously provided by two springs, namely, the effect of doubling the spring force value is realized through parallel connection of the springs.
The pressure of the moving contact is provided by the resultant force of two springs, the stroke of each spring is consistent with that of the moving contact, and the two springs can be regarded as a whole by the parallel springs, which is equivalent to arranging a spring with larger force value in a narrow space.
The technical scheme according to the disclosure has the following advantages:
1. The installation space is small
The springs are connected in parallel to provide contact pressure, so that the springs with smaller force values realize larger contact pressure, and when the force value of the springs is smaller, the volume of the springs can be smaller, and the installation space is saved.
2. The contact pressure in both directions is uniform
Even if the two spring force values are different, the contact pressure is the same when the movable contact moves leftwards/rightwards, and the pressure of the movable contact is not different from left to right due to the deviation of the spring force values.
3. The number of parts is reduced
The traditional contact pressure springs are independently acted left and right, namely, the left side spring provides leftward contact pressure, the right side spring provides rightward contact pressure, and the contact pressure of the scheme is simultaneously provided by the springs at the left side and the right side, so that the scheme saves half of the springs compared with the traditional scheme.
According to yet another aspect of the present disclosure, a dual power transfer switch is proposed, wherein the dual power transfer switch comprises a moving contact pressure holding structure as described above.
So that the disclosure may be better understood, and so that the contributions to the art may be better appreciated, it has been outlined, quite broadly, in order that the detailed description thereof herein may be better appreciated. There are, of course, embodiments of the disclosure that will be described below and which will form the subject matter of the appended claims.
As such, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present disclosure. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present disclosure.
Drawings
The present disclosure will be better understood and its advantages will be more clearly apparent to those skilled in the art from the following drawings. The drawings described herein are for illustration purposes only of selected embodiments and are not intended to limit the scope of the present disclosure in any way as opposed to all possible implementations.
Fig. 1 shows a schematic plan view of a moving contact assembly having a moving contact pressure retention structure according to the present disclosure;
Fig. 2 shows the moving contact of the moving contact assembly in contact closure with a first stationary contact corresponding to a first power source;
fig. 3 shows a perspective view of a first spring holder of a moving contact pressure retention structure according to the present disclosure;
fig. 4 shows a perspective view of a second spring holder of the moving contact pressure holding structure according to the present disclosure;
fig. 5 shows an assembly view of a moving contact pressure retention structure according to the present disclosure;
fig. 6 shows a cross-sectional view of a moving contact pressure retention structure according to the present disclosure;
fig. 7 illustrates a moving state of the moving contact pressure maintaining structure under a leftward arrow force according to the present disclosure;
fig. 8 and 9 illustrate the mating positional relationship of the first slot of the first spring retainer and the second slot of the second spring retainer with the first spring and the second spring, respectively, according to the present disclosure;
FIGS. 10 (a) - (c) schematically illustrate the motion of the moving contact pressure retention structure of the present disclosure under left arrow force and under right arrow force;
fig. 11 shows an assembly view of a moving contact, a first spring holder, a second spring holder, a first spring, and a second spring according to the present disclosure;
FIG. 12 shows a cross-sectional view of a moving contact assembly according to the present disclosure with one moving contact mounted;
Fig. 13 shows a perspective view of a moving contact assembly according to the present disclosure with a plurality of moving contacts (three) mounted.
Detailed Description
Specific embodiments in accordance with the present disclosure are described in detail below with reference to the various drawings.
Fig. 1 shows a schematic plan view of a moving contact assembly 2 with a moving contact pressure retention structure 1 according to the present disclosure, wherein the moving contact 3 of the moving contact assembly 2 is in a double position. Fig. 2 shows the moving contact 3 of the moving contact assembly 2 in contact closure with a first stationary contact 4 corresponding to a first power source (not shown). Also shown in fig. 1 and 2 is a second stationary contact 5 corresponding to a second power source (not shown), with the movable contact 3 being capable of contact closure with the second stationary contact 5 as the movable contact assembly 2 rotates.
According to one embodiment of the present disclosure, a moving contact pressure holding structure 1 is proposed, the moving contact pressure holding structure 1 acting on a moving contact 3 of a dual power transfer switch.
The moving contact pressure holding structure 1 includes at least one pair of spring holders and at least one pair of springs.
Corresponding two spring holders of the at least one pair of spring holders are mounted together staggered with respect to each other.
The two spring holders are arranged to mount two springs of the at least one pair of springs in parallel between the two spring holders, respectively.
The moving contact 3 is held between the two spring holders and is between the two springs.
The parallel connection of the springs enables the installation space to be small and compact, a plurality of moving contacts can be installed side by side, contact pressures of the moving contacts are mutually independent, and rated current capacity and short-time tolerance performance of the ATS are greatly improved.
According to the above-described embodiment of the present disclosure, the at least one pair of spring holders includes the first spring holder 6 (fig. 3) and the second spring holder 7 (fig. 4) having the same structure and the same size.
As shown in fig. 5, the at least one pair of springs includes a first spring 8 and a second spring 9.
According to the above-described various embodiments of the present disclosure, as shown in fig. 3, the first spring holder 6 includes a first base portion 6-1, a first L-shaped burring 6-2, and a first U-shaped portion 6-3.
The first L-shaped flanges 6-2 and the first U-shaped portions 6-3 are located at and extend from the two ends of the first base portion 6-1, respectively.
The first base portion 6-1 defines an elongated first through hole 6-1-1 therein.
According to the above-described respective embodiments of the present disclosure, the first base portion 6-1 is provided with the first stepped portion 6-1-2 on its side close to the first L-shaped burring 6-2.
The first base part 6-1 is provided with a first slot 6-1-3 on its side close to the first U-shaped part 6-3.
The first slot 6-1-3 is located between the first U-shaped portion 6-3 and the first base portion 6-1.
According to the above-described various embodiments of the present disclosure, as shown in fig. 4, the second spring holder 7 includes a second base portion 7-1, a second L-shaped burring 7-2, and a second U-shaped portion 7-3.
The second L-shaped flanges 7-2 and the second U-shaped portion 7-3 are respectively at and extend from both ends of the second base portion 7-1.
The second base 7-1 defines an elongated second through hole 7-1-1 therein.
According to the above-described respective embodiments of the present disclosure, the second base portion 7-1 is provided with the second stepped portion 7-1-2 on its side close to the second L-shaped burring 7-2.
The second base part 7-1 is provided with a second slot 7-1-3 on its side close to the second U-shaped part 7-3.
The second slot 7-1-3 is located between the second U-shaped portion 7-3 and the second base portion 7-1.
According to the above-described respective embodiments of the present disclosure, as shown in fig. 5 and 6, when the first spring holder 6 and the second spring holder 7 are mounted alternately with respect to each other, the first step portion 6-1-2 and the second step portion 7-1-2 can be brought into sliding contact with respect to each other, the second L-shaped burring 7-2 is in the first through hole 6-1-1, the first L-shaped burring 6-2 is in the second through hole 7-1-1, the opening of the first U-shaped portion 6-3 faces the second base portion 7-1, and the opening of the second U-shaped portion 7-3 faces the first base portion 6-1.
According to the above-described various embodiments of the present disclosure, one end of the first spring 8 abuts against the first spring holder 6.
The other end of the first spring 8 rests against the second L-shaped flange 7-2 and is guided by the second L-shaped flange 7-2.
One end of the second spring 9 abuts against the second spring holder 7.
The other end of the second spring 9 rests against the first L-shaped flange 6-2 and is guided by the first L-shaped flange 6-2.
According to the above-described various embodiments of the present disclosure, as shown in fig. 11, the movable contact 3 can pass through the first through hole 6-1-1 and the second through hole 7-1-1 and be installed between the first L-shaped burring 6-2 and the second L-shaped burring 7-2.
When the moving contact 3 is in a non-stressed state, the width of the moving contact 3 is equal to the distance between the first L-shaped flange 6-2 and the second L-shaped flange 7-2, and the moving contact 3 cannot swing freely relative to the first L-shaped flange 6-2 and the second L-shaped flange 7-2.
According to the various embodiments of the present disclosure described above, as shown in fig. 8 and 9, the edges of the first slots 6-1-3 retain the first springs 8 along the length of the first springs 8.
The edges of the second slots 7-1-3 hold the second springs 9 along the length of the second springs 9.
According to the above-described various embodiments of the present disclosure, the first spring 8 is located between the first U-shaped portion 6-3 and the first base portion 6-1.
The second spring 9 is located between the second U-shaped portion 7-3 and the second base portion 7-1.
And the grooves are formed in the spring retainers, so that the inner cavity space of the spring retainers is increased, the total width W of the spring retainers is reduced, and the installation space is saved. Meanwhile, the inner cavity space can enable each spring to be limited, so that each spring is prevented from falling off.
According to another embodiment of the present disclosure, a moving contact assembly is proposed, as shown in fig. 11 to 13, the moving contact assembly 2 comprising at least one moving contact 3, at least one moving contact pressure holding structure 1 as described above, and a moving contact bracket 10.
The moving contact pressure holding structure 1 holds the moving contact 3 therein.
The moving contact pressure holding structure 1 is provided in the moving contact holder 10.
According to the above-mentioned another embodiment of the present disclosure, as shown in fig. 12, the moving contact 3 is mounted on the moving contact bracket 10 through a pin 11.
A bracket slot 10-1 is arranged below the moving contact bracket 10, and the width of the bracket slot 10-1 is larger than that of the moving contact 3, so that the moving contact 3 can swing around the pin shaft 11 in the bracket slot 10-1 at a certain angle.
According to the above-described further embodiment of the present disclosure, the first spring holder 6 of the moving-contact pressure holding structure 1 abuts against the moving-contact bracket 10 at its end close to the first U-shaped portion 6-3.
The second spring holder 7 of the moving contact pressure holding structure 1 abuts against the moving contact bracket 10 at its end close to the second U-shaped portion 7-3.
According to the above-mentioned another embodiment of the present disclosure, as shown in fig. 13, the moving contact assembly 2 further includes a stopper 12.
The limiting piece 12 is provided with a buckle 12-1.
The movable contact support 10 is provided with a clamping groove 10-2.
The retainer 12 is mounted on the moving contact bracket 10 by the engagement of the clip 12-1 and the clip groove 10-2 and does not fall off from the moving contact bracket 10, and the retainer 12 is mounted so as to straddle the first spring holder 6 and the second spring holder 7, so that the first spring holder 6 and the second spring holder 7 do not fall off from the moving contact bracket 10.
As shown in fig. 13, on a quadrupole product (not shown) of the ATS, three moving contacts 3 are mounted for each phase (for example, but not limited thereto), so that higher rated current performance and short-time withstand performance can be achieved.
According to the present disclosure, as schematically shown in fig. 10 (a), the first spring holder 6 and the second spring holder 7 are alternately installed in the moving contact bracket 10 and are restrained by the moving contact bracket 10. One end of the first spring 8 abuts against the first spring holder 6, and the other end of the first spring 8 abuts against the second L-shaped flange 7-2 and is guided by the second L-shaped flange 7-2. One end of the second spring 9 abuts against the second spring holder 7, and the other end of the second spring 9 abuts against the first L-shaped flange 6-2 and is guided by the first L-shaped flange 6-2. The moving contact 3 is arranged between the first L-shaped flange 6-2 and the second L-shaped flange 7-2.
When the movable contact 3 moves in one direction (for example, leftward as shown in fig. 7 and 10 (b)), the movable contact 3 pushes the second spring holder 7 to move leftward (the displacement is the same), and the second spring holder 7 can push the first spring 8 and the second spring 9 to compress simultaneously due to the limitation of the movable contact bracket 10, and the compression amounts of the two springs are the same as the displacement of the second spring holder 7. At this time, the restoring force (i.e. the contact pressure when contacting the fixed contact) of the moving contact 3 is provided by two springs at the same time, i.e. the effect of doubling the spring force value is achieved by connecting the springs in parallel.
When the moving contact 3 moves in one direction (for example, rightward as shown in fig. 10 (c)), the moving contact 3 pushes the first spring holder 6 to move rightward (the displacement is the same), and the first spring holder 6 can push the first spring 8 and the second spring 9 to compress simultaneously due to the limit of the moving contact bracket 10, and the compression amounts of the two springs are the same as the displacement of the first spring holder 6. At this time, the restoring force (i.e. the contact pressure when contacting the fixed contact) of the moving contact 3 is provided by two springs at the same time, i.e. the effect of doubling the spring force value is achieved by connecting the springs in parallel.
The pressure of the moving contact 3 is provided by the resultant force of two springs, the stroke of each spring is consistent with that of the moving contact 3, and the two springs can be regarded as a whole by the parallel springs, which is equivalent to arranging a spring with larger force value in a narrow space.
According to yet another embodiment of the present disclosure, a dual power transfer switch (not shown) is proposed, wherein the dual power transfer switch comprises the moving contact pressure holding structure 1 as described above.
The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the embodiments.
Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of the various embodiments. Indeed, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. Although each of the dependent claims listed below may depend directly on only one claim, disclosure of various embodiments includes each dependent claim in combination with each other claim in the claim set.
No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. In addition, as used herein, the articles "a" and "an" are intended to include one or more items, and may be used interchangeably with "one or more". Furthermore, as used herein, the article "the" is intended to include one or more items recited in conjunction with the article "the" and may be used interchangeably with "one or more". Furthermore, as used herein, the term "set" is intended to include one or more items (e.g., related items, unrelated items, a combination of related and unrelated items, etc.), and can be used interchangeably with "one or more". Where only one item is intended, the phrase "only one item" or similar language is used. In addition, as used herein, the term "having" and variants thereof and the like are intended to be open-ended terms. Furthermore, the phrase "based on" is intended to mean "based, at least in part, on" unless explicitly stated otherwise. In addition, as used herein, the term "or" when used in series is intended to be inclusive and may be used interchangeably with "and/or" unless otherwise specifically indicated (e.g., if used in conjunction with "or" only one of ").
Claims (16)
1. A moving contact pressure maintaining structure, which acts on a moving contact of a dual power transfer switch, wherein,
The movable contact pressure retaining structure comprises at least one pair of spring retainers and at least one pair of springs;
Corresponding two spring holders of the at least one pair of spring holders are mounted together staggered with respect to each other;
the two spring retainers are arranged to mount two springs of the at least one pair of springs in parallel between the two spring retainers, respectively;
the moving contact is held between the two spring holders and between the two springs.
2. The movable contact pressure holding structure according to claim 1, wherein
The at least one pair of spring retainers includes a first spring retainer and a second spring retainer having the same structure and the same size;
the at least one pair of springs includes a first spring and a second spring.
3. The movable contact pressure holding structure according to claim 2, wherein
The first spring retainer includes a first base, a first L-shaped flange, and a first U-shaped portion;
The first L-shaped flange and the first U-shaped portion are at and extend from respective ends of the first base portion;
The first base defines an elongated first through hole therein.
4. The movable contact pressure holding structure according to claim 3, wherein
The first base part is provided with a first step part on one side of the first base part, which is close to the first L-shaped flanging;
the first base is provided with a first slot on one side thereof adjacent to the first U-shaped portion;
the first slot is between the first U-shaped portion and the first base.
5. The movable contact pressure holding structure according to claim 4, wherein
The second spring retainer includes a second base, a second L-shaped flange, and a second U-shaped portion;
The second L-shaped flange and the second U-shaped portion are at and extend from respective ends of the second base portion;
The second base defines an elongated second through hole therein.
6. The movable contact pressure holding structure according to claim 5, wherein
The second base part is provided with a second step part on one side of the second base part, which is close to the second L-shaped flanging;
the second base is provided with a second slot on one side thereof adjacent to the second U-shaped portion;
the second slot is between the second U-shaped portion and the second base.
7. The movable contact pressure holding structure according to claim 6, wherein
When the first and second spring holders are mounted together staggered with respect to each other, the first and second steps are slidably contacted together with respect to each other, the second L-shaped flange is in the first through hole, the first L-shaped flange is in the second through hole, the opening of the first U-shaped portion faces the second base, and the opening of the second U-shaped portion faces the first base.
8. The movable contact pressure holding structure according to claim 7, wherein
One end of the first spring is abutted against the first spring retainer;
the other end of the first spring is abutted against and guided by the second L-shaped flanging;
One end of the second spring is abutted against the second spring retainer;
the other end of the second spring abuts against and is guided by the first L-shaped flange.
9. The movable contact pressure holding structure according to claim 8, wherein
The movable contact can pass through the first through hole and the second through hole and is arranged between the first L-shaped flanging and the second L-shaped flanging;
When the moving contact is in a non-stressed state, the width of the moving contact is equal to the distance between the first L-shaped flanging and the second L-shaped flanging, and the moving contact cannot swing freely relative to the first L-shaped flanging and the second L-shaped flanging.
10. The movable contact pressure holding structure according to claim 7, wherein
The first slotted edge holds the first spring along its length;
The second notched edge holds the second spring along its length.
11. The movable contact pressure holding structure according to claim 10, wherein
The first spring is between the first U-shaped portion and the first base;
the second spring is between the second U-shaped portion and the second base.
12. A moving contact assembly, wherein
The moving contact assembly comprises at least one moving contact, at least one moving contact pressure holding structure according to one of claims 1 to 11 and a moving contact bracket;
The moving contact pressure holding structure holds the moving contact therein;
The moving contact pressure maintaining structure is arranged in the moving contact support.
13. The movable contact assembly of claim 12, wherein
The movable contact is arranged on the movable contact bracket through a pin shaft;
and a bracket slot is arranged below the moving contact bracket, and the width of the bracket slot is larger than that of the moving contact, so that the moving contact can swing around the pin shaft in the bracket slot.
14. The movable contact assembly of claim 13, wherein
The first spring retainer of the moving contact pressure retaining structure abuts against the moving contact bracket at an end thereof adjacent to the first U-shaped portion of the first spring retainer;
The second spring holder of the moving contact pressure holding structure abuts against the moving contact bracket at its end close to the second U-shaped portion of the second spring holder.
15. The movable contact assembly of claim 14, wherein
The movable contact assembly further comprises a limiting piece;
The limiting piece is provided with a buckle;
the movable contact support is provided with a clamping groove;
The limiting piece is arranged on the moving contact support and cannot fall off from the moving contact support through the matching of the buckle and the clamping groove, and
The limiting piece is arranged to span the first spring retainer and the second spring retainer, so that the first spring retainer and the second spring retainer cannot fall off from the movable contact support.
16. A dual power transfer switch, wherein the dual power transfer switch comprises the movable contact pressure holding structure according to one of claims 1 to 11.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011180672.7A CN114429871B (en) | 2020-10-29 | 2020-10-29 | Moving contact pressure holding structure, moving contact assembly and dual power conversion switch |
| EP21306463.7A EP3993002B1 (en) | 2020-10-29 | 2021-10-20 | Movable contact pressure maintaining structure, movable contact assembly and dual-power transfer switch |
| AU2021254658A AU2021254658B2 (en) | 2020-10-29 | 2021-10-22 | Movable contact pressure maintaining structure, movable contact assembly and dual-power transfer switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011180672.7A CN114429871B (en) | 2020-10-29 | 2020-10-29 | Moving contact pressure holding structure, moving contact assembly and dual power conversion switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114429871A CN114429871A (en) | 2022-05-03 |
| CN114429871B true CN114429871B (en) | 2025-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011180672.7A Active CN114429871B (en) | 2020-10-29 | 2020-10-29 | Moving contact pressure holding structure, moving contact assembly and dual power conversion switch |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3993002B1 (en) |
| CN (1) | CN114429871B (en) |
| AU (1) | AU2021254658B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115394598A (en) * | 2022-07-29 | 2022-11-25 | 河南平高电气股份有限公司 | A moving contact assembly of an isolating switch and the isolating switch |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2916899B1 (en) * | 2007-06-01 | 2009-07-10 | Schneider Electric Ind Sas | CONTACT DEVICE FOR AN ELECTRICAL AND AUXILIARY SIGNALING APPARATUS COMPRISING SUCH A DEVICE |
| JP5459885B2 (en) * | 2010-04-07 | 2014-04-02 | 株式会社新愛知電機製作所 | Power switch |
| US9865416B2 (en) * | 2016-04-21 | 2018-01-09 | Hartland Controls, Llc | Electrical power transfer switch |
| CN106960769B (en) * | 2016-12-26 | 2018-12-21 | 杜文福 | Safe lock and dual supply change over switch open circuit |
| CN108666159B (en) * | 2017-03-31 | 2019-12-24 | 施耐德电器工业公司 | Double-power-supply change-over switch |
| US11133141B2 (en) * | 2019-02-07 | 2021-09-28 | Hamilton Sundstrand Corporation | Relay contactor dual linear actuator module system |
| CN210743813U (en) * | 2019-12-31 | 2020-06-12 | 常熟开关制造有限公司(原常熟开关厂） | Dual-power transfer switch |
| CN113838686B (en) * | 2020-06-24 | 2023-05-26 | 施耐德电器工业公司 | Moving contact pressure retaining mechanism and dual power supply change-over switch |
-
2020
- 2020-10-29 CN CN202011180672.7A patent/CN114429871B/en active Active
-
2021
- 2021-10-20 EP EP21306463.7A patent/EP3993002B1/en active Active
- 2021-10-22 AU AU2021254658A patent/AU2021254658B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3993002B1 (en) | 2024-07-03 |
| EP3993002A1 (en) | 2022-05-04 |
| AU2021254658A1 (en) | 2022-05-19 |
| CN114429871A (en) | 2022-05-03 |
| AU2021254658B2 (en) | 2022-10-13 |
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