CN113300135A - Square folding spring contact - Google Patents
Square folding spring contact Download PDFInfo
- Publication number
- CN113300135A CN113300135A CN202110556539.5A CN202110556539A CN113300135A CN 113300135 A CN113300135 A CN 113300135A CN 202110556539 A CN202110556539 A CN 202110556539A CN 113300135 A CN113300135 A CN 113300135A
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- Prior art keywords
- contact
- spring
- reeds
- substrate
- square
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- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 46
- 244000273256 Phragmites communis Species 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 abstract description 4
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 239000000178 monomer Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/115—U-shaped sockets having inwardly bent legs, e.g. spade type
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The invention discloses a square folding spring contact piece which comprises a plurality of reeds, wherein the cross sections of the reeds are in a U-shaped structure in a closing-up shape, the reeds are sequentially nested and arranged, and the closing-up widths of the reeds are the same. The invention provides a square folding spring contact element, a plurality of spring leaves are sequentially nested and arranged, a plurality of rows of conductive contact areas can be formed at a closing opening, compared with the existing single row of contact elements, the conductive sectional area is effectively increased, the contact resistance is greatly reduced, and further the internal energy conversion is weakened, so that the square folding spring contact element can keep a low-temperature state at the same contact width to realize higher current conductivity, namely, the current carrying capacity is improved; a plurality of reeds are in coordination with the outside inserted sheet of centre gripping, promote the clamping-force, and then the long duration of use of extension whole high stable electricity connection is showing and is promoting life.
Description
Technical Field
The invention relates to the technical field of charging contacts, in particular to a square folding spring contact.
Background
With the rapid development of electronic technology, a large number of products gradually tend to be intelligent, and the basis of intelligent control of the products can be realized only by stable and efficient large-current electric energy supply. Therefore, the electrical connection plug is very important as an electrical energy supply terminal in a power supply device.
Because the large current contact used by the electric connection plug bush of the power supply device needs to have the performances of large current load and long plugging and unplugging life, the conductivity, yield strength and hardness (determining the wear resistance) of any material cannot simultaneously meet all requirements, and each material does not simultaneously meet all requirementsThere is also an upper limit to the species data. Therefore, after long-term use, the following problems occur: the effective conductive sectional area is reduced due to the abrasion and plastic deformation of the contact; the main factors associated with the contact resistance R (Ω) are: a. effective conductor conducting distance L (m), b resistivity p (omega mm) of conductor2Effective conductive cross section area A (mm) of conductor2)。
The corresponding principle expression is as follows:
therefore, under the condition that other parameters are not changed, the effective conductive sectional area A is reduced, and the corresponding contact resistance R is relatively larger. When conducting heavy current, the conducting capacity descends to can produce great internal energy, produce the phenomenon of generating heat of charging promptly, so simple adjustment contact material is difficult to satisfy the user to the reliability of heavy current contact long-time service, and the demand of security. Taking a rectangular electric connection plug bush as an example, the contact piece of the plug bush is connected with the rectangular insertion piece through clamping and contacting of the elastic pieces at two sides, the effective contact area is usually two contact areas, and the contact area A is relatively small. In other words, the contact area a of the contact cannot meet the charging demand for a large current regardless of wear and plastic deformation. Therefore, a large amount of electric energy is converted into internal energy by the large contact resistance R to be consumed, and finally, the phenomena of overheating in the charging process, low charging efficiency and the like are caused, so that the charging requirement of large current cannot be met.
Disclosure of Invention
The invention aims to provide a square folding spring contact piece which can ensure higher current conduction efficiency under the condition of the same contact width, and can prolong the service life of a high-stability electric connection state and higher current carrying capacity.
The invention discloses a square folding spring contact element, which adopts the technical scheme that:
the square folding spring contact piece comprises a plurality of reeds, the cross sections of the reeds are in a U-shaped structure in a closed shape, the reeds are sequentially arranged in a nested mode, and the closed width of the reeds is the same.
As preferred scheme, the reed includes first monomer and second monomer, first monomer includes first base plate and arranges many first feelers of first base plate both sides in, first feeler is kept away from first base plate one end and is equipped with the first arch of indent, the second monomer includes the second base plate and arranges many second feelers of second base plate both sides in, first base plate top is arranged in to the second base plate, many first feeler and many the second feeler is arranged at interval mutually, the second feeler is kept away from second base plate one end and is equipped with the second arch of indent.
Preferably, the extension lines defined by the plurality of first projections do not coincide with the extension lines defined by the plurality of second projections.
Preferably, the number of the reeds is two, the two reeds are respectively an outer layer reed and an inner layer reed, and the outer bottom surface of the inner layer reed is in contact with the inner bottom surface of the outer layer reed.
Preferably, the spring leaf further comprises a connecting piece, and the connecting piece is connected with the outer bottom surface of the outer layer spring leaf.
Preferably, the inner layer reed, the outer layer reed and the connecting sheet are welded or riveted in sequence.
Preferably, the spring leaf fixing device further comprises a fastener, the inner layer spring leaf and the outer layer spring leaf are welded and fixed, and the fastener penetrates through the inner layer spring leaf and the outer layer spring leaf in sequence to be locked and fixed with the connecting piece.
The invention discloses a square folding spring contact element, which has the beneficial effects that: the section of each reed is of a U-shaped structure in a closing-up shape, the plurality of reeds are sequentially nested and arranged, and the closing-up widths of the plurality of reeds are the same. The multiple reeds are sequentially nested and arranged, multiple rows of conductive contact areas can be formed at the closing-in position, compared with the existing single-row contact element, the conductive sectional area is effectively increased, the contact resistance is greatly reduced, the internal energy conversion is weakened, the high current conductivity can be realized by keeping the internal energy conversion in a low-temperature state in a state with the same contact width, and the current carrying capacity is improved; a plurality of reeds are in coordination with the outside inserted sheet of centre gripping, promote the clamping-force, and then the long duration of use of extension whole high stable electricity connection is showing and is promoting life.
Drawings
Fig. 1 is a schematic structural diagram of a square folded spring contact according to an embodiment of the present invention.
Fig. 2 is an exploded view of a square folded spring contact according to an embodiment of the present invention.
Fig. 3 is an exploded view of the outer leaf of a square folded spring contact according to an embodiment of the invention.
Figure 4 is a side view of a square shaped folded spring contact according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a square folded spring contact piece and a connecting piece according to an embodiment of the invention.
Figure 6 is a side view of a square shaped folded spring contact according to a second embodiment of the invention.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments and drawings of the specification:
the first embodiment is as follows:
referring to fig. 1 and 2, a square folded spring contact includes a plurality of spring leaves.
The following double-layer reeds are taken as an example, namely the number of the reeds is two, the two reeds are respectively an outer-layer reed 10a and an inner-layer reed 10b, the sections of the outer-layer reed 10a and the inner-layer reed 10b are in a U-shaped structure in a closed shape, the inner-layer reed 10b is nested in the outer-layer reed 10a, the outer bottom surface of the inner-layer reed 10b is in contact with the inner bottom surface of the outer-layer reed 10a, and the closed width of the outer-layer reed 10a is the same as that of the inner-layer reed 10 b.
The inner spring 10b is nested in the outer spring 10a, and two rows of strip-shaped conductive contact areas (one row includes a pair of strip-shaped conductive contact areas) can be formed at the receiving opening, as shown in fig. 4, i.e. the first conductive contact area 13 and the second conductive contact area 14. Compared with the existing single-row contact element, the conductive sectional area is effectively increased, the contact resistance is greatly reduced, and further internal energy conversion is weakened, so that the internal energy conversion can be kept in a low-temperature state at the same contact width to realize higher current conductivity, namely, the current carrying capacity is improved; outer reed 10a and inlayer reed 10b are outside inserted sheet of centre gripping in coordination, promote the clamping-force, and then the long time of use of the whole high stable electricity of extension is connected, is showing promotion life.
Referring to FIG. 3, preferably, the outer leaf spring 10a and the inner leaf spring 10b each comprise a first single body 11 and a second single body 12. The first unit 11 includes a first substrate 111 and a plurality of first contact bars 112 disposed on two sides of the first substrate 111, and an end of the first contact bar 112 away from the first substrate 111 is provided with a first protrusion 113 that is recessed inwards. The second unit 12 includes a second substrate 121 and a plurality of second bars 122 disposed on two sides of the second substrate 121, the second substrate 121 is disposed on the top of the first substrate 111, the plurality of first bars 112 and the plurality of second bars 122 are arranged at intervals, and an inwardly concave second protrusion 123 is disposed at one end of the second bar 122 away from the second substrate 121.
The traditional clamping piece clamping insertion piece forms a pair of strip-shaped conductive contact areas, the protruding structures of the multiple contact strips form multiple conductive contact blocks in the embodiment, and the multiple conductive contact blocks can be regarded as discontinuous strip-shaped conductive contact area structures. The structure has the advantages that when the inserting sheet or the clamping sheet is in a non-straight state, the inserting sheet and the contact element are warped in the connecting process, the effective conductive sectional area is reduced equivalently in the state, and the transmission of large current is seriously influenced. And the protruding of each touch strip of this embodiment all can independently centre gripping the inserted sheet contact of surperficial unevenness and switch on the heavy current. The adaptability of the product is enhanced, so that the product can exert better charging performance in any scene.
Further, the extension lines defined by the plurality of first protrusions 113 do not coincide with the extension lines defined by the plurality of second protrusions 123. That is, each single body forms two conductive contact areas, which are nested structures of the inner layer spring 10b and the outer layer spring 10a in this embodiment, so that there are four conductive contact areas in this embodiment, specifically, refer to the first conductive contact area 13, the second conductive contact area 14, the third conductive contact area 15, and the fourth conductive contact area 16 in fig. 4. Above-mentioned four regional structures can form comparatively firm centre gripping plane, and the stability of reinforcing centre gripping inserted sheet further promotes the stability of charging process.
Referring to fig. 5, the present embodiment further includes a connecting piece 20, and the connecting piece 20 is connected to the outer bottom surface of the outer layer spring 10 a. One end of the inner layer reed 10b, the outer layer reed 10a and one end of the connecting sheet 20 are welded or riveted in sequence, so that the three are in full contact, and the effective conductive sectional area is increased. The other end of the connecting sheet 20 is connected with a power supply device to form a complete and firm power supply structure.
Example two:
referring to fig. 6, in this embodiment, a fixed structure is replaced with a detachable structure on the basis of the first embodiment, that is, an external fastener 30 is added in this embodiment, the inner layer spring 10b and the outer layer spring 10a are welded or riveted and fixed unchanged, and the fastener 30 passes through the inner layer spring 10b and the outer layer spring 10a in sequence and is locked and fixed with the connecting piece 20. When the contact is damaged, it can be replaced by removing the fastener 30. Greatly shortens the maintenance time and reduces the maintenance cost.
The invention provides a square folding spring contact element, the section of each spring leaf is in a U-shaped structure in a closing-in shape, a plurality of spring leaves are sequentially nested and arranged, and the closing-in widths of the plurality of spring leaves are the same. The multiple reeds are sequentially nested and arranged, multiple rows of conductive contact areas can be formed at the closing-in position, compared with the existing single-row contact element, the conductive sectional area is effectively increased, the contact resistance is greatly reduced, the internal energy conversion is weakened, the high current conductivity can be realized by keeping the internal energy conversion in a low-temperature state in a state with the same contact width, and the current carrying capacity is improved; a plurality of reeds are in coordination with the outside inserted sheet of centre gripping, promote the clamping-force, and then the long duration of use of extension whole high stable electricity connection is showing and is promoting life.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The square folding spring contact piece is characterized by comprising a plurality of reeds, the cross sections of the reeds are in a U-shaped structure in a closed shape, the reeds are sequentially nested and arranged, and the closed widths of the reeds are the same.
2. The contact of a square folded spring as claimed in claim 1, wherein the spring comprises a first single body and a second single body, the first single body comprises a first substrate and a plurality of first contact strips disposed on both sides of the first substrate, an end of the first contact strip away from the first substrate is provided with a first protrusion, the second single body comprises a second substrate and a plurality of second contact strips disposed on both sides of the second substrate, the second substrate is disposed on top of the first substrate, the plurality of first contact strips and the plurality of second contact strips are spaced apart from each other, and an end of the second contact strip away from the second substrate is provided with a second protrusion.
3. The contact of claim 2, wherein the extension defined by the first plurality of projections is not coincident with the extension defined by the second plurality of projections.
4. The square folded spring contact of claim 3, wherein the number of the spring pieces is two, and the two spring pieces are an outer spring piece and an inner spring piece, and the outer bottom surface of the inner spring piece is in contact with the inner bottom surface of the outer spring piece.
5. The square shaped folded spring contact of claim 4, further comprising a connecting tab connected to the outer bottom surface of the outer leaf.
6. The square folded spring contact member as claimed in claim 5, wherein the inner leaf spring, the outer leaf spring and the connecting piece are welded or riveted in sequence.
7. The square folded spring contact member as claimed in claim 5, further comprising a fastener, wherein the inner leaf spring and the outer leaf spring are welded or riveted, and the fastener is locked and fixed with the connecting piece by passing through the inner leaf spring and the outer leaf spring in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110556539.5A CN113300135B (en) | 2021-05-21 | 2021-05-21 | Square folding spring contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110556539.5A CN113300135B (en) | 2021-05-21 | 2021-05-21 | Square folding spring contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113300135A true CN113300135A (en) | 2021-08-24 |
| CN113300135B CN113300135B (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110556539.5A Active CN113300135B (en) | 2021-05-21 | 2021-05-21 | Square folding spring contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113300135B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4270672A1 (en) * | 2022-04-25 | 2023-11-01 | Greenworks (Jiangsu) Co., Ltd. | Female terminal, socket, battery pack, power tool and power tool system |
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2021
- 2021-05-21 CN CN202110556539.5A patent/CN113300135B/en active Active
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| JP3117439B1 (en) * | 1999-07-06 | 2000-12-11 | 山一電機株式会社 | Pinching socket |
| CN102217142A (en) * | 2008-11-17 | 2011-10-12 | Jst公司 | Female terminal assembly |
| CN201435868Y (en) * | 2009-05-14 | 2010-03-31 | 陈建万 | Non-welding universal circuit board |
| CN103367954A (en) * | 2012-04-17 | 2013-10-23 | 苏州方林科技股份有限公司 | Battery connector terminal and battery assembly using battery connector terminal |
| CN104143716A (en) * | 2013-05-10 | 2014-11-12 | 町洋机电(中国)有限公司 | Multi-point contact low-impedance pluggable electric connector |
| US20170012272A1 (en) * | 2015-07-06 | 2017-01-12 | Makita Corporation | Battery pack |
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| Publication number | Publication date |
|---|---|
| CN113300135B (en) | 2023-10-31 |
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