CN108767540B - bendable leaf spring - Google Patents
bendable leaf spring Download PDFInfo
- Publication number
- CN108767540B CN108767540B CN201810537708.9A CN201810537708A CN108767540B CN 108767540 B CN108767540 B CN 108767540B CN 201810537708 A CN201810537708 A CN 201810537708A CN 108767540 B CN108767540 B CN 108767540B
- Authority
- CN
- China
- Prior art keywords
- contact
- grid
- pin
- leaf spring
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005452 bending Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
- H01R13/2414—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means conductive elastomers
Landscapes
- Springs (AREA)
Abstract
The invention relates to an electric connector, in particular to a bendable leaf spring, which comprises a cylindrical cage-shaped body, wherein one end of the cylindrical body is a non-contact end, the other end of the cylindrical body is an inserting hole end, the inserting hole end comprises grid bars which are integrally connected with the non-contact end and are arranged around the circumference of the bottom surface of the non-contact end, each grid bar is arched towards the axis direction on the inner wall close to the opening of the inserting hole end, a necking section is formed at the opening of the inserting hole end, the cross section thickness of the grid bars between the necking section and the bottom surface of the non-contact end is reduced along with the increase of the distance between the necking section and the bottom surface of the non-contact end, the inner diameter of the necking section and the outer diameter of a pin to be assembled are in interference fit, annular grooves are formed on the outer sides of the grid bars of the necking section, and a coordination ring is correspondingly arranged, and when the pin is inserted with the inserting hole of the inserting pin and the inserting hole are inserted, or when the pin inserting hole is relatively bent, the coordination ring forces the grid bars to be correspondingly bent. The invention can meet the requirement that the contact pin is inserted from any angle to be matched with the leaf spring, and the contact pin and the leaf spring can swing relatively and are in good contact.
Description
Technical Field
The present invention relates to electrical connectors, and more particularly to a flexible leaf spring.
Background
In the field of electrical connections, there is a type of pin-jack connector that is circular, and the pins often do not make direct hard contact with the internal bore of the jack, but instead mount contacts in the internal bore of the jack. The contact is an elastic structure, and the pin presses the contact during insertion so as to generate long-term contact force between the pin and the inner hole wall of the jack, thereby ensuring the durability and reliability of the electrical connection between the pin and the jack.
Among the contacts, there is a type of leaf spring, which is used in a large amount in socket contacts due to its low resistance, high reliability, and low cost. The socket using the leaf spring as the contact is called a leaf spring socket. The leaf spring is formed by integrally forming a metal flat plate, and the appearance of the leaf spring is a cylindrical cage-shaped body and comprises circular contact rings at two ends and grid bars connected with the two ends. The circular contact ring is arranged in the inner hole of the circular jack, and is fixedly contacted with the inner hole wall of the jack, and the grid is contacted with the contact pin during insertion. The manufacturing process of the leaf spring is generally as follows:
(1) The metal flat plate is divided into fence shapes by removing materials, and two ends of the fence are connected through a plurality of fence strips; (2) If necessary, the two ends of the fence or the grid bars can be shaped continuously; (3) rolling into a round cage-shaped body; (4) The elastic effect of the grid bar can be further enhanced according to the product requirement, such as bending and shrinking the middle part of the grid bar (such as a crown spring); or one end of the circular ring is twisted into a curve shape (such as a torsion spring) around the central axis relative to the other end, so that each grid strip is contracted towards the axis in the middle part, and a structure with two large ends and a small middle part is formed. The cage type leaf spring in use at present only allows the contact pin to be matched with the cage type leaf spring coaxially, and the contact pin cannot swing after being inserted into the leaf spring or is easy to contact poorly after the finger swings.
In view of this, improvements and enhancements are needed in the art.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the bendable leaf spring which can be matched with the contact pin in a different axis and can follow the contact pin to swing, so that the contact pin can be well contacted with the leaf spring when swinging.
The technical scheme of the invention is as follows: the utility model provides a flexible leaf spring, includes the cylindrical body of circle cage, the cylindrical body one end is the non-contact end, and the other end is the jack end, the jack end include with the non-contact end is integrative link to each other and around the grid that non-contact end bottom surface circumference set up, every the grid is in the inner wall arch to the axle center direction near jack end opening part the opening part of jack end forms the throat section, the throat section with the cross section thickness of grid between the non-contact end bottom surface increases with the distance of non-contact end bottom surface and reduces, the internal diameter of throat section realizes interference fit with the external diameter of the contact pin that will assemble, the grid outside of throat section is equipped with the annular and places the tone ring in the annular, when contact pin and jack are not coaxial to insert or when the relative bending of contact pin jack post-lock, the tone ring forces the corresponding harmonious bending of grid.
Preferably, the cross-sectional thickness of the grid between the necking section and the bottom surface of the non-contact end varies linearly.
Preferably, the transition generated when the cross section thickness of the grid between the necking section and the bottom surface of the non-contact end is changed to the necking section is an arc transition.
Preferably, the cross-sectional thickness of the grid at the junction with the bottom surface of the non-contact end is greater than the cross-sectional thickness of the grid at the necking section.
Preferably, the inner cavity formed by surrounding the non-contact end bottom surface by the grid is a jack end inner cavity, and the inner diameter of the bottommost end of the jack end inner cavity is equal to the outer diameter of the contact pin to be assembled.
The beneficial effects of the invention are as follows:
1. through setting up the cross section thickness with the grid that the distance of non-contact end bottom surface increases and reduces for the cavity internal diameter that forms after the grid encloses has the part that is greater than the contact pin external diameter, thereby makes the contact pin can have the space to realize 360 swings after getting into jack end inner chamber, and can not produce the interference when swinging, satisfies the crooked leaf spring of inserting of contact pin simultaneously.
2. The root of the grid bar is thick and thin near the opening, and when the leaf spring and the contact pin relatively swing or bend after the contact pin is inserted, the structure of the grid bar optimizes the stress distribution of the leaf spring, and the root of the grid bar can resist larger couple.
3. The cross section thickness of each grid bar near the opening of the jack end is arched towards the axis direction, a necking section is formed at the opening of the jack end, and the inner diameter of the necking section is in interference fit with the outer diameter of the contact pin to be assembled, so that the leaf spring is well contacted with the contact pin.
4. The grid strip of the necking section is provided with a ring groove for placing a coordination ring, the coordination ring is further fastened on the ring groove to contact the contact pin, when the contact pin is inserted with the jack in a different shaft or is bent relatively after the contact pin jack is inserted, the coordination ring forces the grid strip to bend correspondingly in a coordinated manner, so that the bending leaf spring is in good contact in a bending state, and the bending leaf spring can bend in any direction (360 degrees).
Drawings
Fig. 1 is a schematic view of the structure of the flexible leaf spring of the present invention.
FIG. 2 is a schematic cross-sectional view of a flexible leaf spring of the present invention
Fig. 3 is a schematic cross-sectional view of the flexible leaf spring of the present invention assembled with a pin.
Detailed Description
The invention will be further described in detail below with reference to the accompanying drawings:
referring to fig. 1 to 2, the present invention provides a bendable leaf spring, which includes a cylindrical cage-shaped body, one end of the cylindrical body is a non-contact end 1, the other end is a jack end 2, the jack end 2 includes a grid 4 integrally connected with the non-contact end 1 and circumferentially disposed around the bottom surface of the non-contact end 1, an inner cavity formed by the grid 4 after surrounding a circle is an inner cavity of the jack end 2, each grid 4 arches toward an axis direction near an opening of the jack end 2, a necking section 6 is formed at the opening of the jack end 2, so that an interference fit is realized between an inner diameter of the necking section 6 and an outer diameter of a pin to be assembled, an annular groove 5 for accommodating a coordination ring 3 is disposed at an outer side of the grid of the necking section 6, and when the pin is inserted into the jack end or when the pin jack is relatively bent after being inserted into the jack, the coordination ring 3 forces the grid 4 to bend correspondingly.
The cross-sectional thickness of the grating 4 between the reduced section 6 and the bottom surface of the non-contact end 1 decreases with increasing distance from the bottom surface of the non-contact end 1. The cross-sectional thickness of the grid 4 between the necking section 6 and the bottom surface of the non-contact end 1 changes linearly.
The transition generated when the thickness of the cross section of the grid between the necking section 6 and the bottom surface of the non-contact end 1 is changed to the necking section is arc transition.
The cross section thickness of the grid 4 at the connection part with the bottom surface of the non-contact end 1 is larger than that of the grid 4 at the necking section 6.
The inner cavity formed by surrounding the grid 4 around the bottom surface of the non-contact end 1 is the inner cavity of the jack end 2, and the inner diameter of the bottommost end of the inner cavity of the jack end 2 is equal to the outer diameter of the contact pin 7 to be assembled.
The working principle of the invention is as follows: as shown in fig. 3, after the pin 7 is inserted from the jack end 2, the head of the pin 7 enters the inner cavity of the jack end 2, since each grid 4 arches towards the axis direction near the inner wall of the opening of the jack end 2, a necking section 6 is formed at the opening of the jack end, the pin 7 is in interference fit with the leaf spring at the necking section 6, the contact tightness is increased, the cross section thickness of the grid 4 between the necking section 6 and the bottom surface of the non-contact end 1 is reduced along with the increase of the distance between the necking section 6 and the bottom surface of the non-contact end 1, when the cross section thickness of the grid 4 is reduced to the necking section 6, the thickness of the necking section 6 is increased again, and an annular groove 5 for the hooping of the coordination ring 3 is formed outside the grid 4 at the necking section 6, so that the head of the pin 7 can swing 360 degrees in the inner cavity of the jack end 2 after passing through the necking section 6, and meanwhile, due to the hooping action of the coordination ring, the pin 7 can keep good contact when swinging or bending relatively to the leaf spring. The electric connection in all directions is satisfied, and the electric connection structure is applicable to connection occasions inconvenient to coaxially insert, the root of the grid 4 is thick, and the opening is thin, so that the grid 4 is easy to bend, and the root can bear larger couple action when being bent.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (4)
1. The utility model provides a flexible leaf spring, includes circle cage-type tube-shape body, its characterized in that, tube-shape body one end is the non-contact end, and the other end is the jack end, the jack end include with non-contact end an organic whole link to each other and around the grid that non-contact end bottom surface circumference set up, every the grid is in the inner wall that is close to jack end opening department arch to the axle center direction, in the opening department of jack end forms the throat section, the throat section with the cross section thickness of grid between the non-contact end bottom surface increases with the distance of non-contact end bottom surface and reduces, the internal diameter of throat section realizes interference fit with the external diameter of contact pin that is to be assembled, the throat section is circular throat, the transition that produces when throat section with the cross section thickness variation of grid between the non-contact end bottom surface to the throat section is circular arc transition, the throat section's the grid outside is equipped with the annular and places the coordination ring in the annular, when contact pin and jack plug pin jack are inserted or when the relative curved coordination ring forces corresponding bending.
2. The flexible leaf spring of claim 1 wherein the cross-sectional thickness of the grate bar between the reduced mouth section and the non-contact end floor varies linearly.
3. The flexible leaf spring of claim 1 wherein the cross-sectional thickness of the grate bars at the junction with the non-contact end bottom surface is greater than the grate bar cross-sectional thickness at the necked down section.
4. The flexible leaf spring of claim 1 wherein the cavity defined by the grate around the perimeter of the non-contact end bottom surface is a socket end cavity having a bottommost inner diameter equal to the outer diameter of the pin to be assembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537708.9A CN108767540B (en) | 2018-05-30 | 2018-05-30 | bendable leaf spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537708.9A CN108767540B (en) | 2018-05-30 | 2018-05-30 | bendable leaf spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108767540A CN108767540A (en) | 2018-11-06 |
| CN108767540B true CN108767540B (en) | 2023-12-01 |
Family
ID=64004264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810537708.9A Active CN108767540B (en) | 2018-05-30 | 2018-05-30 | bendable leaf spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108767540B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207655A1 (en) * | 1992-03-11 | 1993-09-23 | Kostal Leopold Gmbh & Co Kg | Electrical pin contact cooperating with knife contact for automobile electrics - has additional spring reinforcing contact force provided by opposing contact arms clamping inserted knife contact |
| CN205900860U (en) * | 2016-07-15 | 2017-01-18 | 安徽凯迪电气有限公司 | Piece type plug terminal |
| CN107946847A (en) * | 2017-11-08 | 2018-04-20 | 武汉德泰纳新能源技术有限公司 | Open type connector plug jack contact |
| CN208284686U (en) * | 2018-05-30 | 2018-12-25 | 深圳乔合里科技股份有限公司 | Flexible leaf spring |
-
2018
- 2018-05-30 CN CN201810537708.9A patent/CN108767540B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207655A1 (en) * | 1992-03-11 | 1993-09-23 | Kostal Leopold Gmbh & Co Kg | Electrical pin contact cooperating with knife contact for automobile electrics - has additional spring reinforcing contact force provided by opposing contact arms clamping inserted knife contact |
| CN205900860U (en) * | 2016-07-15 | 2017-01-18 | 安徽凯迪电气有限公司 | Piece type plug terminal |
| CN107946847A (en) * | 2017-11-08 | 2018-04-20 | 武汉德泰纳新能源技术有限公司 | Open type connector plug jack contact |
| CN208284686U (en) * | 2018-05-30 | 2018-12-25 | 深圳乔合里科技股份有限公司 | Flexible leaf spring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108767540A (en) | 2018-11-06 |
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