CN211743065U - Silver graphite contact safety unit - Google Patents
Silver graphite contact safety unit Download PDFInfo
- Publication number
- CN211743065U CN211743065U CN202020945667.XU CN202020945667U CN211743065U CN 211743065 U CN211743065 U CN 211743065U CN 202020945667 U CN202020945667 U CN 202020945667U CN 211743065 U CN211743065 U CN 211743065U
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- China
- Prior art keywords
- contact
- piece
- movable contact
- silver graphite
- movable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Contacts (AREA)
- Electromagnets (AREA)
Abstract
The utility model discloses a silver graphite contact safety unit, which comprises a fixed unit, a static contact component and a movable contact component, wherein the static contact component is arranged at the groove of the fixed unit, and the movable contact component is arranged at the upper part of an operating mechanism and is arranged in the U-shaped part of the fixed unit; the movable contact in the movable contact assembly and the silver graphite contact in the fixed contact assembly are oppositely arranged at a specified distance in a normally open state; the static contact assembly comprises a static contact piece, a fixing clamp and a silver graphite contact, wherein the silver graphite contact is abutted to the static contact piece and is wrapped together through the fixing clamp, the three parts are fixed by tin soldering to form the static contact assembly, and one end of the static contact piece extends out of the fixing clamp to serve as a wiring end. The utility model discloses a silver graphite contact of anti melt-bonding nature guarantees that move, static contact does not take place adhesion phenomenon in the use, has improved anti melt-bonding ability, has guaranteed better security and life.
Description
Technical Field
The utility model relates to a relay specifically is a silver graphite contact safety unit.
Background
The present railway signal relay is a special electromagnetic switch device in various railway signal equipment or systems, and is composed of electromagnetic coil, contact assembly, transmission part and parts for ensuring the connection and disconnection of contacts. Therefore, the railway provides strict technical indexes for the signal relay, the contact system has to act consistently, reliably and accurately, has enough circuit closing and opening functions and service life, and keeps high electrical insulation strength under the condition of large change of external temperature and humidity; has stable time characteristic and electric parameter characteristic.
The structure of the contact assembly in the existing railway signal relay adopts spot welding or riveting to fix the contact on the contact piece, the contact piece and the supporting piece are welded together, and the contact assembly is formed by injection molding. The existing contact material has poor fusion welding resistance, and the service life of the relay is influenced.
The existing structure drives a pull rod to act through an armature, the pull rod drives a movable contact to act, and then the movable contact and a static contact are disconnected. Meanwhile, the original static contact is in a cylindrical shape with the axial direction placed horizontally, the design is non-redundant, the contact area with the movable contact is small, the contact bounce is obvious, and the stability is poor.
SUMMERY OF THE UTILITY MODEL
To the relatively poor, the contact stability subalternation not enough between the contact of the relay contact resistance welding ability of prior art, the utility model aims to solve the problem that a silver graphite contact safety unit with high reliability and long service life is provided.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model relates to a silver graphite contact safety unit, which comprises a fixed unit, a static contact component and a movable contact component, wherein the static contact component is arranged at the groove of the fixed unit, and the movable contact component is arranged at the upper part of an operating mechanism and is arranged in the U-shaped part of the fixed unit; the movable contact in the movable contact assembly and the silver graphite contact in the fixed contact assembly are oppositely arranged at a specified distance in a normally open state.
The static contact assembly comprises a static contact piece, a fixing clamp and a silver graphite contact, wherein the silver graphite contact is abutted to the static contact piece and is wrapped together through the fixing clamp, the three parts are fixed by tin soldering to form the static contact assembly, and one end of the static contact piece extends out of the fixing clamp to serve as a wiring end.
The silver graphite contact is in a trapezoidal table shape, the upper bottom surface is a wide plane and is fixedly welded with the static contact piece, and the lower bottom surface is a narrow plane which is combined with the dynamic contact.
The movable contact assembly comprises a movable contact piece, a movable piece insert and a movable contact, wherein the movable contact piece is H-shaped, the middle connecting part of the H-shaped movable contact piece is provided with a round hole, each top end position of the H-shaped movable contact piece is fixedly provided with a movable contact respectively, the movable piece insert is an upper piece and a lower piece which can be buckled, the middle connecting part of the movable contact piece is clamped between the upper piece and the lower piece, the movable piece insert is provided with a round hole, and the movable contact piece and the round hole of the movable contact piece are concentrically sleeved on the operating mechanism.
The operating mechanism is a mandril, the upper part of the mandril is provided with a first-stage step, the upper end of the mandril is provided with a groove, and the movable contact assembly is sleeved between the step and the groove of the mandril; the upper end of a moving sheet insert of the moving contact assembly is abutted against the bottom surface of the first stop, the top surface of the first stop is abutted against the split retainer ring, and the split retainer ring is clamped in the groove at the upper end of the ejector rod; the ejector rod is fixedly connected with the iron core.
The utility model discloses still be equipped with the second backstop, its bottom surface butt is in step department, the above-mentioned and the ejector pin between the moving plate inserts of moving contact subassembly on the suit spring.
The utility model discloses still have the backplate, fixed unit installs in one side of backplate, and the wiring end of quiet contact piece passes the backplate and extends to the backplate opposite side.
The inner side of the U-shaped part of the fixing unit is provided with an arc-shaped bulge.
The utility model has the following beneficial effects and advantages:
1. the utility model discloses static contact among the silver-graphite contact safety unit adopts the silver-graphite contact of anti melt-bonding nature, and carries out the design of flattening with silver-graphite contact, increases the area of contact who moves, static contact, more is favorable to the contact resistance to be stable, guarantees to move, the static contact does not take place adhesion phenomenon in the use, has improved anti melt-bonding ability, has guaranteed better security and life.
2. Utility model provides a U-shaped portion inboard of fixed unit adopts the arc protruding, can restrict the movable contact subassembly and excessively rotate to guarantee movable contact and silver-graphite contact butt.
3. The utility model provides a move the contact and adopt redundant design, can guarantee better contact reliability.
4. The utility model provides a quiet joint piece has the step design to guarantee that quiet joint subassembly is reliably installed on fixed unit, can not fall out.
5. The utility model discloses still be equipped with the second backstop, its bottom surface butt is in step department, the above-mentioned and the ejector pin between the moving plate inserts of moving contact subassembly on the suit spring, the spring that is in compression state can provide the enough counter-force of moving contact subassembly, guarantee at the actuation in-process move, stationary contact reliably contacts, the difficult contact rebound phenomenon that takes place.
Drawings
Fig. 1 is a schematic structural view of a silver graphite contact safety unit of the present invention;
fig. 2 is an isometric view of the present invention;
FIG. 3 is a schematic view of the structure of the ejector pin of the present invention;
fig. 4A is a front view of a silver graphite contact according to the present invention;
FIG. 4B is a left side view of FIG. 4A;
FIG. 4C is a top view of FIG. 4A;
FIG. 5 is a schematic structural view of the middle stationary contact assembly of the present invention;
FIG. 6 is a schematic structural view of the middle moving contact assembly of the present invention;
FIG. 7 is a schematic view of the structure of the middle fixing unit of the present invention;
fig. 8 is a schematic view of the fixing unit after mounting the stationary contact piece.
Wherein, 1 is the backplate, 2 is fixed unit, 201 is the recess, 202 is U type portion, 202A is the arc arch, 3 is the quiet contact subassembly, 301 is the quiet contact piece, 302 is the fixation clamp, 303 is the silver graphite contact, 4 is the movable contact subassembly, 401 is the movable contact piece, 402 is the movable plate inserts, 403 is the movable contact, 5 is first backstop, 6 is the second backstop, 7 is the spring, 8 is the ejector pin, 9 is split washer.
Detailed Description
The invention will be further explained with reference to the drawings attached to the specification.
As shown in fig. 1, the present invention provides a silver graphite contact safety unit, which includes a fixing unit 2, a static contact component 3 and a movable contact component 4, wherein the static contact component 3 is installed at a groove 201 of the fixing unit 2, and the movable contact component 4 is installed at an upper portion of an operating mechanism and is disposed in a U-shaped portion 202 of the fixing unit 2; in the normally open state, the movable contact 403 of the movable contact assembly 4 is disposed to face the silver graphite contact 303 of the stationary contact assembly 3 at a predetermined distance.
The utility model discloses in, quiet joint subassembly 3 includes quiet joint piece 301, fixation clamp 302 and silver graphite contact 303, wherein silver graphite contact 303 and quiet joint piece 301 butt to wrap up together through fixation clamp 302, the three utilizes the fixed quiet joint subassembly 3 that forms of soldering, and the one end of quiet joint piece 301 is stretched out by fixation clamp 302 and is regarded as the wiring end.
As shown in fig. 7 to 8, the fixing unit 2 includes a groove 201 and a U-shaped portion 202, wherein an opening is formed at an upper portion of the groove 201, and a protrusion on the stationary contact piece 301 is fixed in the opening; round holes are formed in two sides of the U-shaped portion, and the bottom surface of the U-shaped portion of the fixing unit is fixedly connected with a yoke of the existing safety unit through the round holes by screws. The U-shaped part of the fixing unit 2 is installed on one side of a back plate 1, and the terminal of the static contact sheet 301 passes through the back plate 1 and extends to the other side of the back plate 1.
As shown in fig. 4A to 4C, the silver graphite contact 303 is trapezoidal and has a wide upper bottom surface and two extended sides as a base, and is fixedly welded to the stationary contact piece 301, and a narrow lower bottom surface, which is joined to and separated from the movable contact 403.
The static contact sheet 301 is a metal lath with a concave middle width direction, the fixing clip 302 is bent at the concave position, and the silver graphite contact 303 and the static contact sheet 301 are wrapped on the static contact sheet 301.
In this embodiment, the fixing clip 302 is a copper sheet, is soft and bendable, and has a middle large hollow hole and two side small hollow holes, the middle large hollow hole can be just blocked on the base through the trapezoidal platform of the silver graphite contact 303, the two side small hollow holes are just buckled on the side surface of the silver graphite contact 303 after being bent to supplement the concave part of the static contact piece 301, and are bent again to be tightly fastened on the back surface of the static contact piece 301, and then are fixed by soldering, so as to form the static contact assembly 3 shown in fig. 5.
As shown in fig. 6, the movable contact assembly 4 includes a movable contact piece 401, a movable contact insert 402 and a movable contact 403, wherein the movable contact piece 401 is an H-shaped structure having a circular hole at the middle connecting portion, four vertex positions of the H-shaped structure are respectively and fixedly installed with the movable contact 403, the movable contact insert 402 is an upper and a lower parts capable of being fastened, the middle connecting portion of the movable contact piece 401 is clamped between the upper and the lower parts, the movable contact insert 402 has a circular hole, and the circular hole of the movable contact piece 401 and the circular hole of the movable contact piece 402 are concentrically sleeved on the operating mechanism.
As shown in fig. 2 to 3, the operating mechanism is a push rod 8, a first step 801 is arranged on the upper portion of the push rod 8, a groove 802 is arranged on the upper end of the push rod 8, and the movable contact assembly 4 is sleeved between the step 801 and the groove 802 of the push rod 8; the upper end of a moving plate insert 402 of the moving contact assembly 4 is abutted against the bottom surface of the first stop catch 5, the top surface of the first stop catch 5 is abutted against the split retainer ring 9, and the split retainer ring 9 is clamped in the groove 802 at the upper end of the ejector rod 8; the bottom end of the ejector rod 8 is fixedly connected with the iron core of the existing safety unit.
The utility model discloses still be equipped with second backstop 6, its bottom surface butt is in step 801 department, and the top is gone up with ejector pin 8 between the moving plate inserts 402 of moving contact subassembly 4 and is gone up suit spring 7, as shown in fig. 1.
The utility model discloses a working process and principle as follows:
1) suction process
The coil sleeved outside the iron core is electrified, the iron core drives the ejector rod 8 to move upwards under the action of electromagnetic force, the movable contact assembly 4 is further driven to move upwards, the movable contact 403 and the silver graphite contact 303 in the fixed contact assembly 3 are tightly closed together, at the moment, the movable contact assembly 4 moves downwards in a string mode by 0.5mm under the action of jacking force, and the first stop 5 and the follow-up contact assembly 4 move downwards in a string mode by 0.5mm simultaneously. The spring 7 is also compressed by 0.5mm between the moving plate component 4 and the second stop 6 arranged at the step 801 and is in an energy storage state, so that the attraction is stable. In this embodiment, the length of the spring 7 in the divided state is 4mm, and the length in the free state before the mounting is 5 mm.
2) Breaking process
The coil sleeved outside the iron core loses power, the iron core loses electromagnetic attraction, the ejector rod 8 is driven to move downwards under the action of self gravity and the restoring force of the large spring in the magnetic power mechanism, the ejector rod returns to the original breaking position, the spring 7 recovers the original length, the movable contact assembly 4 drives the first stop 5 to ascend again, and the first stop 5 is stopped at the position of the split retainer ring 9.
Due to the arrangement of the spring 7 and the two stops, the limit is realized, and the non-adhesion during the breaking and the stable suction force can be ensured.
The utility model discloses overall structure is small, can reduce the fourth of original structure, has saved installation space, and the U-shaped portion inboard of fixed unit adopts arc arch 202A (totally four) can limit the excessive rotation of brake contact subassembly simultaneously to guarantee to move contact and silver-graphite contact butt.
The utility model discloses the static contact among the well silver-colored graphite contact safety unit adopts the silver-colored graphite contact of anti melt-solder ability, and carries out the design of flattening with silver-colored graphite contact, increases the area of contact who moves, static contact, more is favorable to the stable assurance of contact resistance to move, the adhesion phenomenon does not take place for static contact in the use, has guaranteed better security. The movable contact adopts a redundant design, namely, each side of the movable contact piece 401 is provided with two movable contacts which are four in number, and meanwhile, the contact surface of each static contact 303 and the movable contact 403 can ensure better contact reliability.
Claims (8)
1. A silver graphite contact security element characterized by: the device comprises a fixed unit, a static contact component and a movable contact component, wherein the static contact component is arranged at a groove of the fixed unit, and the movable contact component is arranged at the upper part of an operating mechanism and is arranged in a U-shaped part of the fixed unit; the movable contact in the movable contact assembly and the silver graphite contact in the fixed contact assembly are oppositely arranged at a specified distance in a normally open state.
2. The silver graphite contact security element of claim 1, wherein: the static contact assembly comprises a static contact piece, a fixing clamp and a silver graphite contact, wherein the silver graphite contact is abutted to the static contact piece and is wrapped together through the fixing clamp, the three parts are fixed by tin soldering to form the static contact assembly, and one end of the static contact piece extends out of the fixing clamp to serve as a wiring end.
3. The silver graphite contact security element of claim 2, wherein: the silver graphite contact is in a trapezoidal table shape, the upper bottom surface is a wide plane and is fixedly welded with the static contact piece, and the lower bottom surface is a narrow plane which is combined with the dynamic contact.
4. The silver graphite contact security element of claim 1, wherein: the movable contact assembly comprises a movable contact piece, a movable piece insert and a movable contact, wherein the movable contact piece is H-shaped, the middle connecting part of the H-shaped movable contact piece is provided with a round hole, each top end position of the H-shaped movable contact piece is fixedly provided with a movable contact respectively, the movable piece insert is an upper piece and a lower piece which can be buckled, the middle connecting part of the movable contact piece is clamped between the upper piece and the lower piece, the movable piece insert is provided with a round hole, and the movable contact piece and the round hole of the movable contact piece are concentrically sleeved on the operating mechanism.
5. The silver graphite contact security element of claim 1 or 3, wherein: the operating mechanism is a mandril, the upper part of the mandril is provided with a first-stage step, the upper end of the mandril is provided with a groove, and the movable contact assembly is sleeved between the step and the groove of the mandril; the upper end of a moving sheet insert of the moving contact assembly is abutted against the bottom surface of the first stop, the top surface of the first stop is abutted against the split retainer ring, and the split retainer ring is clamped in the groove at the upper end of the ejector rod; the ejector rod is fixedly connected with the iron core.
6. The silver graphite contact security element of claim 4, wherein: and a second stop is further arranged, the bottom surface of the second stop abuts against the step, and a spring is sleeved on the ejector rod between the upper surface of the second stop and the moving plate insert of the moving contact point assembly.
7. The silver graphite contact security element of claim 1, wherein: the fixing unit is arranged on one side of the back plate, and the wiring end of the static contact piece penetrates through the back plate to extend to the other side of the back plate.
8. The silver graphite contact security element of claim 1 or 3, wherein: the inner side of the U-shaped part of the fixing unit is provided with an arc-shaped bulge.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RS20220602A RS20220602A1 (en) | 2019-12-28 | 2020-07-03 | Relay having high reliability and high vibration resistance |
| PCT/CN2020/100234 WO2021237878A1 (en) | 2019-12-28 | 2020-07-03 | Relay having high reliability and high vibration resistance |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019113845456 | 2019-12-28 | ||
| CN201911384545.6A CN111261467A (en) | 2019-12-28 | 2019-12-28 | Silver graphite contact safety unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211743065U true CN211743065U (en) | 2020-10-23 |
Family
ID=70946758
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911384545.6A Withdrawn CN111261467A (en) | 2019-12-28 | 2019-12-28 | Silver graphite contact safety unit |
| CN202010473592.4A Pending CN111446128A (en) | 2019-12-28 | 2020-05-29 | Silver graphite contact safety unit |
| CN202020945667.XU Active CN211743065U (en) | 2019-12-28 | 2020-05-29 | Silver graphite contact safety unit |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911384545.6A Withdrawn CN111261467A (en) | 2019-12-28 | 2019-12-28 | Silver graphite contact safety unit |
| CN202010473592.4A Pending CN111446128A (en) | 2019-12-28 | 2020-05-29 | Silver graphite contact safety unit |
Country Status (3)
| Country | Link |
|---|---|
| CN (3) | CN111261467A (en) |
| RS (1) | RS20220602A1 (en) |
| WO (1) | WO2021237878A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111261467A (en) * | 2019-12-28 | 2020-06-09 | 沈阳铁路信号有限责任公司 | Silver graphite contact safety unit |
| WO2023272422A1 (en) * | 2021-06-28 | 2023-01-05 | 沈阳铁路信号有限责任公司 | Relay having anti-vibration and anti-melt welding properties |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5216396A (en) * | 1991-09-13 | 1993-06-01 | Eaton Corporation | Switching relay |
| CN203055832U (en) * | 2013-01-08 | 2013-07-10 | 乐清市新驰电气科技有限公司 | Contact structure of AC-DC circuit breaker |
| CN206893547U (en) * | 2017-05-09 | 2018-01-16 | 浙江英洛华新能源科技有限公司 | Arc blocking formula clapper type relay |
| CN207558709U (en) * | 2017-09-18 | 2018-06-29 | 浙江正泰电器股份有限公司 | The double-contact double-breakpoint structure of relay |
| CN107978489B (en) * | 2017-11-07 | 2020-01-21 | 华为技术有限公司 | Double-coil contactor and circuit control system |
| CN111261467A (en) * | 2019-12-28 | 2020-06-09 | 沈阳铁路信号有限责任公司 | Silver graphite contact safety unit |
-
2019
- 2019-12-28 CN CN201911384545.6A patent/CN111261467A/en not_active Withdrawn
-
2020
- 2020-05-29 CN CN202010473592.4A patent/CN111446128A/en active Pending
- 2020-05-29 CN CN202020945667.XU patent/CN211743065U/en active Active
- 2020-07-03 RS RS20220602A patent/RS20220602A1/en unknown
- 2020-07-03 WO PCT/CN2020/100234 patent/WO2021237878A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN111261467A (en) | 2020-06-09 |
| RS20220602A1 (en) | 2022-08-31 |
| WO2021237878A1 (en) | 2021-12-02 |
| CN111446128A (en) | 2020-07-24 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |