CN208467492U - Band convex ribs screw for the welding of relay housing - Google Patents
Band convex ribs screw for the welding of relay housing Download PDFInfo
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- CN208467492U CN208467492U CN201820802929.XU CN201820802929U CN208467492U CN 208467492 U CN208467492 U CN 208467492U CN 201820802929 U CN201820802929 U CN 201820802929U CN 208467492 U CN208467492 U CN 208467492U
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Abstract
A kind of band convex ribs screw for the welding of relay housing, including threaded rod (1), threaded rod (1) upper end attachment screw welding surface (2), screw welding face (2) are equipped with convex ribs (3).Welding with traditional housing and mounting screw uses electric resistance welding, housing and screw welding contact form are the way of contact of the plane to plane, and the utility model in the welding plane of traditional welding screw be provided with convex ribs, substantially reduce the contact area between welding plane and housing, housing macroscopically actually carries out by the way of line face contact with screw, since the contact area of housing and screw greatly reduces, to greatly improve welding section current density, and then weld strength is improved；After housing and the improvement of mounting screw welding point form innovation, it can once weld, be reinforced without being brazed, non-oxidation after housing welding is thinning to wait visual conditions, and will not generate any influence to rear process.
Description
Technical field
The present invention provides a kind of band convex ribs screw for the welding of relay housing, belongs to relay electric resistance welding field.
Background technique
Under the overall background that the progress that electronic component production domesticization replaces gradually is accelerated, relay industry is as production domesticization generation
The main force replaced puts forward new requirements and challenges to every technique of domestic relay.Wherein relay housing and installation spiral shell
The traditional welding manner of the welding of nail has been unable to meet intensity requirement, appearance requirement and the process-cycle requirement of the new period.Tradition
Relay housing and mounting screw welding using electric resistance welding position then be brazed reinforce method realize both reliable weldering
It connects.In this technical process, housing first uses the welding of electric resistance welding progress first stage with screw, since weld strength far reaches
Less than the technique requirement of installation strength, the high-frequency induction heating fusing solder that must carry out second stage realizes the mesh that soldering is reinforced
, since high-frequency induction brazing must introduce scaling powder and coolant liquid, along with the flowing of solder in brazing process, reinforce back cover
Shell parts integrated oxidation blacks, and pickling is also needed to remove oxide.Even if solving problem of appearance by pickling, finally still have
15% or more enclosure portion is eliminated because of problem of appearance, and the housing thickness after pickling is thinning, is seriously affected subsequent sharp
The leakproofness of light edge sealing.
Furthermore using the welding manner of existing conventional bolt, period weld interval, every 100 relay housings needed 3 days,
Qualification rate is only 80%, and the entire process flow period is long, and damage of giving up is big, big to rear process influence degree.
In conclusion the prior art needs to can be only achieved weld strength by secondary welding, have process cycle long, raw material
Consume is big, and appearance is bad, to the biggish defect of use influence degree in subsequent process flow.
Summary of the invention
The present invention provides a kind of band convex ribs screw and welding method for the welding of relay housing, is welded using the present invention
Screw carries out welding, and there is primary welding just can reach prescribed strength, carry out without adding the welding raw material such as solder flux and coolant liquid
Secondary welding, material consume is small, and appearance yield is high, will not impact to the use of subsequent process flow.
Technical solution of the present invention:
For the band convex ribs screw of relay housing welding, packet welding surface, screw welding face is equipped with convex ribs.
It is previously described for the band convex ribs screw of relay housing welding, the shape of the convex ribs 3 is circular ring shape, polygonal annular
Or cross.
It is previously described for the band convex ribs screw of relay housing welding, the shape of the convex ribs (3) is circular ring shape.
It is previously described for the band convex ribs screw of relay housing welding, the height of the convex ribs is 0.4-0.8mm.
It is previously described for the band convex ribs screw of relay housing welding, the height of the convex ribs is 0.6mm.
It is previously described for the band convex ribs screw of relay housing welding, the width of the convex ribs is 0.2-0.6mm.
It is previously described for the band convex ribs screw of relay housing welding, the width of the convex ribs is 0.3mm.
Compared with prior art, the beneficial effects of the present invention are as follows:
(1) electric resistance welding is used with the welding of traditional housing and mounting screw, housing and screw welding contact form are plane
The way of contact to plane, and it is of the invention convex ribs are provided in the welding plane of traditional welding screw, housing is macro with screw
It is carried out by the way of line face contact in sight, since the contact area of housing and screw greatly reduces, to greatly improve
Welding section current density, and then improve weld strength；
(2) it after housing and mounting screw welding point form innovation are improved, can once weld, be reinforced without being brazed, cover
Non-oxidation after shell welding, it is thinning to wait visual conditions, and any influence will not be generated to rear process.
(3) it is welded using the screw, it is spot welding power first that process conditions are easier than ringless-type muscle screw,
AC spot-welding power supply must be selected using ringless-type muscle screw welding, and use the screw welding then to spot welding power no requirement (NR),
The power supplys such as alternating current and direct current, energy storage, transistor.Furthermore the requirement for electrode: ringless-type muscle screw is due to welding energy
In electrode, heating loss is excessive, it is desirable that and electrode must use the expensive Cu alloy material that hardness is high, electric conductivity and thermal conductivity are fabulous,
Such as aluminium oxide copper, chromium-zirconium-copper, and circular bar screw welding is used to substantially reduce since welding section current density increases 5 times
The thermal losses of electrode, therefore to electrode material without particular/special requirement, common spot-wedling electrode can weld.
(4) prior art is combined to be described further beneficial effects of the present invention:
1) in the prior art, total contact area of screw welding face and housing appearance is (with certain model relay implement body
Numerical simulation calculation)=screw welding face area S=π R2=3.14 × 6.25=19.625mm2, surface area, which illustrates, sees Fig. 4,
Electrode and screw contact area are annulus area S1=π R2-πr2=14.719mm2, see Fig. 5；It can be obvious from the above analysis
Find out S > S1, in a cyclic process of spot welding, the current density (current density=electric current ÷ of electrode and screw contact surface
Contact area) current density that is contacted with housing of > screw.Therefore a big chunk heat is between electrode and screw contact surface
Loss waste, fails effective for welding.
2) it is calculated with the parameter of convex ribs in embodiment 3, is optimal weldering from analyzing us above to show that S1 is far longer than S
Model is connect, S=π R can be calculated from Fig. 42=19.625mm2, circular bar area S2=π (R can be calculated from Fig. 62-
r2)=3.674mm2, wherein R=2.1mm, r=1.8, then can release screw area of a circle S=5S2, i.e., after increase circular bar
Contact area reduced 5 times more originally.That is the electricity of the contact surface in the case where electric current is constant between screw and housing
Current density increases 5 times.Therefore, after welding point innovative design, housing can once be welded with mounting screw, be added without soldering
Gu.
3) it is to verify the optimum size obtained, size mistake by a large amount of spot-welding tests that the present invention, which chooses height 0.6mm,
Although it is good that height can connect intensity, screw disk and housing gap are excessive after welding, and size is too low, directly affects weld strength；
Choosing width 0.6mm is also the optimum size that a large amount of soldering tests determine, width is wide or narrow weld strength is all not achieved and wants
It asks, in 0.6mm, intensity is best.
4) in terms of welding efficiency, using period weld interval after the invention every 100 by 3 days original (originally techniques
Must secondary soldering reinforce, also need progress pickling) become present 20min, 216 times of improved efficiency, qualification rate is from original 80%
Till now 99.99% is promoted, welding is carried out using transistor power supply, parameter are as follows: electric current I=2.1KA, time T=18ms, pressure
=40N, part producing data are shown in Table 1 within 2017.
The annual part producing data of table 1 2017
It can be seen that by the above creation data, after using electric resistance welding nut of the invention, enclosure portion spot welding is qualified
Rate qualification rate has substantially achieved 100%, and welding effective percentage is significantly promoted.
5) experimental example
In order to prove after increasing circular bar, welding efficiency is obviously improved effect, and applicant spy is for intensity pulling force, torsion
Power is tested, and experiment content is as follows:
Name of product: relay
Model specification: KJZC-4MH, JQX-6MC, JSB-74M
Kind of test: consignment test
It tests reason and purpose: after consumer products mounting screw increases circular bar on welding surface, it is strong to improve welding
Degree now needs to carry out weld strength pull test.
Test basis: it is carried out by Q/RJT040B-2009 " military relay welding technique and test stone " draw-bar donamometer.
Test specimen number: JB5124:5,5178:5,828:5.
Production batch: nothing
Test period: 2017.11.2-2017.11.2
Test data:
1 JB5124 pull test of table record
2 5178 pull test of table record
| Serial number | Apply the power of (100 ± 10) N, solder joint is secured, and weldment is not removed |
| 1# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
| 2# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
| 3# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
| 4# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
| 5# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
3 828 pull test of table record
| Serial number | Apply the power of (100 ± 10) N, solder joint is secured, and weldment is not removed |
| 1# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
| 2# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
| 3# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
| 4# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
| 5# | During test, apply the pulling force of 100N, the twisting resistance pass the test of 3Nm on weldment |
Detailed description of the invention
Attached drawing 1 is screw view；
Attached drawing 2 is technique assembling front view of the invention；
Attached drawing 3 is technique assembly left view of the invention；
Attached drawing 4 is screw and housing contact area schematic diagram in the prior art；
Attached drawing 5 is electrode and screw contact area schematic diagram in the prior art；
Attached drawing 6 is circular bar and housing contact area schematic diagram in the present invention.
The label in accompanying drawing is: 1- threaded rod, 2- welding platform, 3- convex ribs, 4- housing, electrode under 5-, 6- protruding portion, 7-
Top electrode.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment 1:
Convex ribs are equipped with for the band convex ribs screw of relay housing welding, including screw welding face 2, screw welding face 2
3。
The shape of the convex ribs 3 is ring triangular ring.
The shape of the convex ribs 3 is annular.
The height of the convex ribs 3 is 0.4-0.8mm.
The width of the convex ribs 3 is 0.2-0.6mm.
Embodiment 2: it for the welding of relay housing with convex ribs screw and the method for carrying out electric resistance welding using it, constitutes such as
Shown in Fig. 1, including threaded rod 1,1 upper end attachment screw welding surface 2 of threaded rod, screw welding face 2 are equipped with convex ribs 3.
The shape of the convex ribs 3 is four sides annular.
The height of the convex ribs 3 is 0.4mm.
The width of the convex ribs 3 is 0.2mm.
Embodiment 3: it for the welding of relay housing with convex ribs screw and the method for carrying out electric resistance welding using it, constitutes such as
Shown in Fig. 1, including threaded rod 1,1 upper end attachment screw welding surface 2 of threaded rod, screw welding face 2 are equipped with convex ribs 3.
The shape of the convex ribs 3 is diamond shape.
The height of the convex ribs 3 is 0.5mm.
The width of the convex ribs 3 is 0.4mm.
Embodiment 4: it for the welding of relay housing with convex ribs screw and the method for carrying out electric resistance welding using it, constitutes such as
Shown in Fig. 1, including threaded rod 1,1 upper end attachment screw welding surface 2 of threaded rod, screw welding face 2 are equipped with convex ribs 3.
The shape of the convex ribs 3 is circular ring shape.
The height of the convex ribs 3 is 0.6mm.
The width of the convex ribs 3 is 0.3mm.
Embodiment 5: it for the welding of relay housing with convex ribs screw and the method for carrying out electric resistance welding using it, constitutes such as
Shown in Fig. 1, including threaded rod 1,1 upper end attachment screw welding surface 2 of threaded rod, screw welding face 2 are equipped with convex ribs 3.
It is optimal using the effect of circular ring shape, the reason is that the ratio of welding surface shared by circular ring shape is evenly distributed.
The shape of the convex ribs 3 is cross.
The height of the convex ribs 3 is 0.7mm.
The width of the convex ribs 3 is 0.5mm.
Embodiment 6: it for the welding of relay housing with convex ribs screw and the method for carrying out electric resistance welding using it, constitutes such as
Shown in Fig. 1, including threaded rod 1,1 upper end attachment screw welding surface 2 of threaded rod, screw welding face 2 are equipped with convex ribs 3.
The shape of the convex ribs 3 is trapezoidal.
The height of the convex ribs 3 is 0.8mm.
The width of the convex ribs 3 is 0.6mm.
Claims (7)
1. the band convex ribs screw for the welding of relay housing, it is characterised in that: including screw welding face (2), screw welding face
(2) convex ribs (3) are equipped with.
2. the band convex ribs screw according to claim 1 for the welding of relay housing, it is characterised in that: the convex ribs
(3) shape is circular ring shape, polygonal annular or cross.
3. the band convex ribs screw according to claim 2 for the welding of relay housing, it is characterised in that: the convex ribs
(3) shape is circular ring shape.
4. the band convex ribs screw according to claim 1 for the welding of relay housing, it is characterised in that: the convex ribs
(3) height is 0.4-0.8mm.
5. the band convex ribs screw according to claim 1 for the welding of relay housing, it is characterised in that: the convex ribs
(3) height is 0.6mm.
6. the band convex ribs screw according to claim 1 for the welding of relay housing, it is characterised in that: the convex ribs
(3) width is 0.2-0.6mm.
7. the band convex ribs screw according to claim 1 for the welding of relay housing, it is characterised in that: the convex ribs
(3) width is 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820802929.XU CN208467492U (en) | 2018-05-28 | 2018-05-28 | Band convex ribs screw for the welding of relay housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820802929.XU CN208467492U (en) | 2018-05-28 | 2018-05-28 | Band convex ribs screw for the welding of relay housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208467492U true CN208467492U (en) | 2019-02-05 |
Family
ID=65219005
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820802929.XU Active CN208467492U (en) | 2018-05-28 | 2018-05-28 | Band convex ribs screw for the welding of relay housing |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465927A (en) * | 2018-05-28 | 2018-08-31 | 贵州振华群英电器有限公司（国营第八九厂） | Band convex ribs screw and its welding method for the welding of relay case |
-
2018
- 2018-05-28 CN CN201820802929.XU patent/CN208467492U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465927A (en) * | 2018-05-28 | 2018-08-31 | 贵州振华群英电器有限公司（国营第八九厂） | Band convex ribs screw and its welding method for the welding of relay case |
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