CN102225507A - Sealing ring pedestal group for electromagnetic relay and manufacturing method - Google Patents
Sealing ring pedestal group for electromagnetic relay and manufacturing method Download PDFInfo
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- CN102225507A CN102225507A CN2011101473723A CN201110147372A CN102225507A CN 102225507 A CN102225507 A CN 102225507A CN 2011101473723 A CN2011101473723 A CN 2011101473723A CN 201110147372 A CN201110147372 A CN 201110147372A CN 102225507 A CN102225507 A CN 102225507A
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- sealing ring
- base plate
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- reaming
- electromagnetic relay
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Abstract
The invention relates to a sealing ring pedestal group for an electromagnetic relay and a manufacturing method. A big hole of a big leading-out rod on each bottom plate of the pedestal group is equipped with a sealing ring in interference fit with the big hole, the sealing ring is welded with the bottom plate, and a sintered glass insulator is hermetically connected with the sealing ring. The internal diameter of the sealing ring is equal to the diameter of the big hole. The big hole is a step hole, wherein the chambering diameter on the bottom end is 1.0-1.8 mm more than that of the original aperture, and the chambering depth is 0.4-0.6 mm. The external diameter of a step on the outer ring surface of the sealing ring is in interference fit with the chambering internal diameter of the big hole, the height of the step is equal to or more than the chambering depth of the big hole. The bottom surface of the sintered glass insulator is higher than that of the bottom plate and positioned in the sealing ring. The manufacturing method includes the steps of: first chambering the big hole on the bottom plate, then manufacturing the sealing ring and pressing the sealing ring in the big hole of the bottom plate, and welding by laser; embedding the glass insulator sleeved on the leading-out rod in the sealing ring and sintering the glass insulator at a high temperature, and sealing the leading-out rod, the bottom plate and the sealing ring as a whole by the melted glass. The bottom plate in the invention does not need thickening, and the glass sealing interface is enlarged, sealed well and ensured in quality.
Description
(1) technical field
The present invention relates to the electromagnetic relay production technical field, be specially a kind of electromagnetic relay sealing ring base group and preparation method.
(2) background technology
A key component in the electromagnetic relay is the base group, is made up of base plate, leading-off rods and glass insulator at present.The bottom edge and the shell of base group weld together by Laser Welding, have formed the monolithic case of relay, and the base group is to link up the inside and outside bridge of relay.Present base group is that the glass insulator that is enclosed within on the leading-off rods is embedded in the macropore of base plate, is fixed by graphite mo(u)ld, and behind the high temperature sintering, the glass of melting and leading-off rods and base plate are bonding, and surface tension makes the glass insulator upper and lower surface be punctured into crescent simultaneously.
The quality of base group plays an important role to the performance of relay product.Every performance indications of relay product improve constantly at present, and the relay in the particularly military articles for use requires higher.Present base group is difficult to satisfy the demand, and particularly the sealing of base group is bad, and 10% alcohol leak detection gas leakage occurs.Analyze former because the big bore edges on the base plate only is 1.5mm apart from the outer peripheral minimum distance of base plate, when base plate and shell welding, be subjected to thermal shock big on every side near the weld seam.Because heat conduction path is short, the sole plate metal of big bore edges is subjected to localized hyperthermia's effect to produce expansion and distortion rapidly, though the nonmetal glass insulator coefficient of expansion of sealing-in is suitable with sole plate metal with it in the macropore, but be not to be under the condition of heating synchronously of sintering process, in the process of base plate and shell welding, because the poor thermal conduction of glass, glass practical distortion and flow of metal do not match.Under flow of metal stretched, glass insulator and sole plate metal seal interface produce to be destroyed, thereby causes gas leakage.After technical Analysis and verification experimental verification, glass insulator intensity is difficult to resist the broken ring power of bottom edge laser welding heat, sealing back 98% gas leakage point all be big leading-off rods glass insulator and sole plate metal boundary apart from weld seam 1.8mm scope outside the base plate in.
But the base arrangement of relay product, leading-off rods position are fixed., too big when though the base plate size increasing can reduce seal welding to the small product size influence to the influence of glass insulator, can't adopt.Base plate thickens the interface length that also can increase glass insulator and base plate sealing-in, but after base plate thickened, the glass sealing interface length increased limited, and can make the use that the relay overall weight increases influences product.So also be difficult to adopt the base set product that the plate that do not see the bottom so far thickens.
(3) summary of the invention
The objective of the invention is to design a kind of electromagnetic relay sealing ring base group and preparation method, at the macropore of original base plate, promptly embed sealing ring on the bottom plate hole of leading-off rods, glass insulator is packaged in the sealing ring, increases the glass sealing interface length, improves sealing.
The electromagnetic relay sealing ring base group of the present invention's design, the base plate outer rim matches with the shell base, 2～4 macropores are arranged on the base plate, bottom plate hole for big leading-off rods, the glass insulator of sintering connects big leading-off rods and the base plate of inserting thereon, and each macropore of this programme is furnished with the sealing ring of an external diameter and macropore internal diameter interference fit, and the height of sealing ring protrudes base plate bottom surface 1.5mm～1.9mm, sealing ring and base plate welding, the glass insulator sealing-in sealing ring of sintering.
Described sealing ring wall thickness 0.4mm～0.6mm.
Described macropore is a stepped hole, the bottom reaming be diameter greater than former aperture 1.0mm～1.8mm, the reaming degree of depth is 0.4mm～0.6mm.Described sealing ring outer ring surface one end has step, the internal diameter interference fit of the external diameter of sealing ring step and macropore reaming, and shoulder height is equal to or greater than the degree of depth of macropore reaming, and the sealing ring internal diameter is identical with the big bore dia of base plate.
The glass insulator bottom surface of described sintering is higher than the base plate bottom surface, is in the sealing ring.
The magnitude of interference that the external diameter of described sealing ring step cooperates with the external diameter of macropore reaming is 0.01mm～0.02mm.
The preparation method of the electromagnetic relay sealing ring base group of the present invention's design is as follows:
The macropore reaming of I, base plate
Macropore on the base plate, i.e. the bottom plate hole of big leading-off rods, the bottom reaming be diameter greater than former aperture 1.0mm～1.8mm, the reaming degree of depth is 0.4mm～0.6mm.
II, making sealing ring
The sealing ring internal diameter equates that with macropore diameter outer ring surface one end has step, the internal diameter interference fit of the external diameter of sealing ring step and macropore reaming, and shoulder height is equal to or greater than the degree of depth of macropore reaming.
III, sealing ring are installed
Sealing ring is pressed in the base plate macropore, laser welded seal ring and base plate.Elder generation spot welding sealing ring and base plate uniform four points on the circle that join are located during welding, finish the welding of full circle again.
The installation of IV, big leading-off rods
Be enclosed within glass insulator on the leading-off rods and be embedded in the sealing ring of macropore of base plate, fix with graphite mo(u)ld, high temperature sintering, the glass insulator melting, cooling back glass insulator and leading-off rods and base plate, sealing ring sealing-in are one.
The advantage of electromagnetic relay sealing ring base group of the present invention and preparation method is: 1, this structure base plate need not thickening, owing to installed sealing ring additional, glass insulator seal interface length increases more than 60%, and height because of sealing ring, a position that may leak air has also increased more than 50% apart from the weld seam minimum range, thereby when the base plate of base group and shell welding, can not destroy glass insulator and sole plate metal seal interface because of the deformation of Laser Welding thermometal, cause gas leakage, fill helium pressurization detection after adopting this structure, good seal, the seat group that do not see the bottom has the gas leakage point; 2, processing is simple, sealing ring and base plate firm welding, sealing ring and base plate weld longitudinally cutting face, fusion penetration reaches 0.5mm, is equivalent to the degree of depth of bottom plate hole step, and destructive testing detects sealing strength, this structure ruptures from glass interface, sealing ring and base plate welding position are excellent, and the power value all reaches 4000-5000N, the intensity raising; 3, outward appearance is improved, and the glass insulator of outstanding base plate bottom surface is in the sealing ring, and profile is uniform.
(4) description of drawings
Fig. 1 is the whole schematic bottom view of this electromagnetic relay sealing ring base group embodiment;
Fig. 2 is Fig. 1 macropore place profile;
Fig. 3 inserts the partial structurtes enlarged diagram of this electromagnetic relay sealing ring base group embodiment macropore for big leading-off rods and glass insulator.
The figure internal label is: 1, base plate, 2, sealing ring, 3, big leading-off rods, 4, glass insulator.
(5) specific embodiment
Electromagnetic relay sealing ring base group embodiment
The base plate 1 of this electromagnetic relay sealing ring base group embodiment as shown in Figure 1, 2, base plate 1 outer rim matches with the shell base, the lower-left of base plate and upper right 1 macropore arranged respectively, be the bottom plate hole of big leading-off rods, described macropore is a stepped hole, and this bore dia is 8mm, the bottom reaming is a diameter 9.4 (0.1,0) mm, the reaming degree of depth is 0.6 (0.1,0) mm.
Described sealing ring 2 is shown in Fig. 2,3, and wall thickness 0.5mm, internal diameter are 8 (0 ,+0.1) mm, and external diameter is 9 (0 ,+0.1) mm, highly is 2.3 (0 ,+0.15) mm.Outer ring surface one end has step, and the external diameter of sealing ring 2 steps is 9.4mm, and shoulder height is 0.5 (0 ,+0.1) mm, and with the internal diameter interference fit of macropore reaming, the magnitude of interference is 0.01mm.
As shown in Figure 3, weld in embedding of the step of sealing ring 2 one ends and base plate 1 stepped hole and with base plate 1, the glass insulator 4 that is inserted with big leading-off rods 3 is positioned at sealing ring 2, the glass insulator 4 sealing-in base plates 1 behind the sintering, big leading-off rods 3 and sealing ring 2.
The preparation method embodiment of this electromagnetic relay sealing ring base group
The macropore reaming of I, base plate 1
As shown in Figure 1, 2, the macropore on the base plate 1, i.e. the bottom plate hole of big leading-off rods, the aperture is 8mm, and the bottom reaming is diameter 9.4 (+0.01 ,-0.04) mm, and the reaming degree of depth is 0.6 (0.1,0) mm.
II, making sealing ring 2
As shown in Figure 1, 2, sealing ring 2 wall thickness 0.5mm, internal diameter are 8 (0 ,+0.1) mm, and external diameter is 9 (0 ,+0.1) mm, highly are 2.3 (0 ,+0.15) mm.Outer ring surface one end has step, and the external diameter of step is 9.4mm, and shoulder height is 0.5 (0 ,+0.1) mm, and with the internal diameter interference fit of macropore reaming, the magnitude of interference is 0.01mm.
III, sealing ring 2 are installed
The installation of IV, big leading-off rods 3
Be enclosed within glass insulator 4 on the leading-off rods 3 and be embedded in the sealing ring 2 of macropore of base plate 1, fix high temperature sintering, sintering parameter: press 850 ℃ of 5min air oxidations of sintering process, the 2X belt speed with graphite mo(u)ld; Glass insulator 4 meltings, cooling back glass insulator 4 and leading-off rods 3 and base plate 1, sealing ring 2 sealing-ins are one, as shown in Figure 3.
Carried out air-tight test by the electromagnetic relay sealing ring base group that the design and this preparation method obtain, test data is as shown in table 1, and two batches, ten samples of each batch are all qualified.Compare with the leak rate of intrinsic base group 10%, quality significantly improves, and has guaranteed the reliable in quality of relay product.
For detecting the bond strength and the glass sealing intensity of sealing ring and base plate Laser Welding, this sealing ring base group and medium base group have been carried out the engaging force test.Testing program is to get the base group that has sintered, on universal testing machine the relative base plate of leading-off rods is pulled out, and observes crack conditions, record fracture location and withdrawal force.The failure test data of medium base group and this sealing ring base group see Table 2.By table 2 data as can be seen, the power Value Data dispersiveness of medium base group is very big, and have many 2000-3000N levels than low value; And the power Value Data uniformity of sealing ring base group of the present invention is fine, and about 4000-5000N, intensity improves about 1 times mostly.From fracture location, the sealing structure is from the fracture at the interface of glass and sealing ring, and sealing ring and base plate welding position are excellent, observe the longitudinally cutting face of sealing ring and base plate weld, fusion penetration reaches 0.5mm, is equal to the degree of depth of bottom plate hole step, and welding is reliable.
Table 1 sealing ring base group test index data logger
Table 2 sealing ring base group and medium base group sealing strength test recording table
The foregoing description is the specific case that purpose of the present invention, technical scheme and beneficial effect are further described only, and the present invention is defined in this.All any modifications of within scope of disclosure of the present invention, being made, be equal to replacement, improvement etc., all be included within protection scope of the present invention.
Claims (7)
1. electromagnetic relay sealing ring base group, base plate (1) outer rim matches with the shell base, and 2～4 macropores are arranged on the base plate (1), is the bottom plate hole of big leading-off rods (3), the glass insulator of sintering (4) connects big leading-off rods (3) and the base plate of inserting thereon (1), it is characterized in that:
Each macropore is furnished with the sealing ring (2) of an external diameter and macropore internal diameter interference fit, the height of sealing ring (2) protrudes base plate (1) bottom surface 1.5mm～1.9mm, sealing ring (2) and base plate (1) welding, the glass insulator behind the sintering (4) sealing-in sealing ring (2), big leading-off rods (3) and base plate (1).
2. electromagnetic relay sealing ring base group according to claim 1 is characterized in that:
Described sealing ring (2) wall thickness 0.4mm～0.6mm.
3. electromagnetic relay sealing ring base group according to claim 2 is characterized in that:
Described macropore is a stepped hole, and the diameter of bottom reaming is greater than former aperture 1.0mm～1.8mm, and the reaming degree of depth is 0.4mm～0.6mm; Described sealing ring (2) outer ring surface one end has step, the external diameter of sealing ring (1) step and the internal diameter interference fit of macropore reaming, and shoulder height is equal to or greater than the degree of depth of macropore reaming, and the internal diameter of sealing ring (2) is identical with the big bore dia of base plate (1).
4. electromagnetic relay sealing ring base group according to claim 3 is characterized in that:
The magnitude of interference that the external diameter of described sealing ring (2) step cooperates with the external diameter of macropore reaming is 0.01mm～0.02mm.
5. according to each described electromagnetic relay sealing ring base group in the claim 1 to 4, it is characterized in that:
The glass insulator of described sintering (4) bottom surface is higher than base plate (1) bottom surface, is in the sealing ring (2).
6. the preparation method of electromagnetic relay sealing ring base group according to claim 1 is characterized in that step is as follows:
The macropore reaming of I, base plate (1)
Macropore on the base plate (1), the bottom plate hole of promptly big leading-off rods (3), bottom counter bore diameter are greater than former aperture 1.0mm～1.8mm, and the reaming degree of depth is 0.4mm～0.6mm;
II, making sealing ring (2)
Sealing ring (2) internal diameter equates that with macropore diameter outer ring surface one end has step, the external diameter of sealing ring (2) step and the internal diameter interference fit of macropore reaming, and shoulder height is equal to or greater than the degree of depth of macropore reaming;
(2 install for III, sealing ring
Sealing ring (2) is pressed in base plate (1) macropore, laser welded seal ring (2) and base plate (1);
The installation of IV, big leading-off rods (3)
Being enclosed within glass insulator (4) on the leading-off rods (3) is embedded in the sealing ring (2) of macropore of base plate (1), fix with graphite mo(u)ld, high temperature sintering, glass insulator (4) melting, cooling back glass insulator (4) and leading-off rods (3) and base plate (1), sealing ring (2) sealing-in are one.
7. the preparation method of electromagnetic relay sealing ring base group according to claim 6 is characterized in that:
Described Step II I, during welding the elder generation spot welding sealing ring (2) with base plate (1) join the circle on uniform four points, finish the welding of full circle again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101473723A CN102225507A (en) | 2011-06-02 | 2011-06-02 | Sealing ring pedestal group for electromagnetic relay and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101473723A CN102225507A (en) | 2011-06-02 | 2011-06-02 | Sealing ring pedestal group for electromagnetic relay and manufacturing method |
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| CN102225507A true CN102225507A (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101473723A Pending CN102225507A (en) | 2011-06-02 | 2011-06-02 | Sealing ring pedestal group for electromagnetic relay and manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689137A (en) * | 2012-05-23 | 2012-09-26 | 上海乐深电子有限公司 | Method for manufacturing thin-material spring plate with nut riveted in thickness direction |
| CN109093329A (en) * | 2018-08-16 | 2018-12-28 | 乐清市永成机械有限公司 | A kind of processing technology of Water pump head inner flow passage inserts |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689137A (en) * | 2012-05-23 | 2012-09-26 | 上海乐深电子有限公司 | Method for manufacturing thin-material spring plate with nut riveted in thickness direction |
| CN102689137B (en) * | 2012-05-23 | 2015-02-11 | 上海乐深电子有限公司 | Method for manufacturing thin-material spring plate with nut riveted in thickness direction |
| CN109093329A (en) * | 2018-08-16 | 2018-12-28 | 乐清市永成机械有限公司 | A kind of processing technology of Water pump head inner flow passage inserts |
| CN109093329B (en) * | 2018-08-16 | 2020-10-23 | 乐清市永成机械有限公司 | Processing technology of runner insert in water pump head |
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Application publication date: 20111026 |