CN104500552A - Pin structure for preventing hinge lining self-lubricating layer shedding - Google Patents
Pin structure for preventing hinge lining self-lubricating layer shedding Download PDFInfo
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- CN104500552A CN104500552A CN201410527569.3A CN201410527569A CN104500552A CN 104500552 A CN104500552 A CN 104500552A CN 201410527569 A CN201410527569 A CN 201410527569A CN 104500552 A CN104500552 A CN 104500552A
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- pin
- lubricating layer
- lining
- bearing pin
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Abstract
The invention relates to a pin structure for preventing hinge lining self-lubricating layer shedding. The pin structure comprises a pin main body in a fit connection relationship with a lining, and a pin head sleeving the end of the pin main body, the outer side of the pin head end connected to the pin main body forms a combined structure comprising multiple circular R corners and each adjacent R corners are in a transition connection relationship by an inclined plane with a certain gradient. Compared with the prior art, in pressing of the pin structure into the lining, at the beginning, the pin structure and the lining are in a clearance fit relationship and along with pin structure entrance, magnitude of interference is gradually produced. The head is subjected to excess arc treatment and the lining lubricating layer is subjected to gradual extrusion and thus the lubricating layer does not fall off. Finally, the hinge torque can be controlled in a design tolerance scope.
Description
Technical field
The present invention relates to a kind of pin shaft structure, especially relate to a kind of pin shaft structure preventing hinge bush self-lubricating layer from coming off.
Background technique
Automotive hinge, all will use self-lubricating bushing, and the structure of lining is generally skim PTFE lubricating layer that employing base material bonds, and then coordinates with stub axle and produces self-lubricating effect.Be the matching relationship of slight interference between lining and stub axle, lubrication should be produced and rotate, produce certain moment of torsion again.
In hinge design requires, lining lubricating layer is very important parts, and require not allow to come off in assembly process the phenomenon reduced with some areas.But in actual production, often in the process of assembling bearing pin, the scraping in by the process of lining of the head of bearing pin causes coming off of lubricating layer.Reduce due to lubricating layer or after coming off, hinge driving torque can be caused to decline and do not meet designing requirement.This phenomenon has certain probability of happening, is a kind of risk.Although moment of torsion defective products can be found in the inspection of rear operation moment of torsion, can cause and scrap, increase the cost that hinge manufactures.
Summary of the invention
Object of the present invention is exactly provide a kind of only have squeezing action to lubricating layer to overcome defect that above-mentioned prior art exists and do not produce scraping effect, ensure that the intact of lining lubricating layer, the pin shaft structure preventing hinge bush self-lubricating layer from coming off that the moment of torsion of hinge also can meet design requirement.
Object of the present invention can be achieved through the following technical solutions:
A kind of pin shaft structure preventing hinge bush self-lubricating layer from coming off, comprise the pin body be connected with lining, be set in the bearing pin head of pin body end, the composite structure that described bearing pin head and the outer side surface of pin body connecting end adopt the R angle of multiple arc-shaped to form, chamfered transition through having certain slope between adjacent R angle connects, make bearing pin in by lining like this, by the mode that connecting end place progressively imports, squeezing action is only had to lubricating layer and does not produce scraping effect, ensure that the intact of lining lubricating layer, the moment of torsion of hinge also can meet design requirement.
As preferred embodiment, the outer side surface of bearing pin head and pin body connecting end is the composite structure that two arc-shaped R angles are formed.
As the mode of execution be more preferably, the connection side that two arc-shaped R angles lay respectively at bearing pin head and pin body and the changeover portion formed between connection side and bearing pin head upper and lower surface.The gradient angle on the inclined-plane formed between two arc-shaped R angles is 150 °-170 °, and best mode of execution is 162 °.The radius at two arc-shaped R angles is 0.2mm-1.5mm.
By the way, bearing pin head bushing inlet part, is first pressed into lining.Just start to be Spielpassung, along with entering of bearing pin starts there is magnitude of interference gradually.Because head is excessive circular arc process and has the gradient of 162 °, lining lubricating layer, by progressively squeezing action process, comes off so can not send lubricating layer.The moment of torsion of final hinge can control in the tolerance range of design.Also have particular/special requirement to gradient in addition, if gradient is less than 150 °, so bearing pin imports lining generation lubricating layer and to come off risk, if higher than 170 °, bearing pin and lining straightway fit dimension can be made to reduce and affect the stability of moment of torsion.
Compared with prior art, the present invention has the following advantages:
One, cost does not increase: hinge pin processing technology is with equally employing cold-forging technique in the past;
Two, assemble convenient.Efficiency improves: bearing pin head new structure, convenient importing lining, and require to reduce to bearing pin positioning fixture location coaxality, press-in speed can be accelerated, and ensure that quality and improves efficiency;
Three, improve hinge assembly moment of torsion up-to-standard rate: lining lubricating layer is protected.Hinge moment of torsion is guaranteed.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram of existing bearing pin;
Fig. 2 is structural representation of the present invention;
Fig. 3 is partial structurtes schematic diagram of the present invention;
Fig. 4 is the partial structurtes schematic diagram of the present invention when assembling.
In figure, 1 be pin body, 2 be bearing pin head, 21 be arc-shaped R angle, 3 be lining, 31 be substrate layer, 32 for PTFE lubricating layer.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Comparative example
The structure of existing bearing pin as shown in Figure 1, also become by pin body and bearing pin head group, but existing bearing pin head in general its head is the structure at single R angle or natural R angle, so in use, the scraping in by the process of lining of the head of bearing pin causes coming off of lubricating layer.Reduce due to lubricating layer or after coming off, hinge driving torque can be caused to decline and do not meet designing requirement.
Embodiment
A kind of pin shaft structure preventing hinge bush self-lubricating layer from coming off, its structure as in Figure 2-4, comprise the pin body 1 be connected with lining, be set in the bearing pin head 2 of pin body end, the difference of the present invention and prior art is just: the composite structure that bearing pin head 2 adopts the R angle of multiple arc-shaped to form with the outer side surface of pin body 1 connecting end, chamfered transition through having certain slope between adjacent R angle connects, make bearing pin in by lining like this, by the mode that connecting end place progressively imports, squeezing action is only had to lubricating layer and does not produce scraping effect, ensure that the intact of lining lubricating layer, the moment of torsion of hinge also can meet design requirement.
In the present embodiment, bearing pin head 2 is the composite structure that two arc-shaped R angles 21 are formed with the outer side surface of pin body 1 connecting end.The connection side that two arc-shaped R angles 21 lay respectively at bearing pin head 2 and pin body 1 and the changeover portion formed between connection side and bearing pin head upper and lower surface.The gradient angle on the inclined-plane formed between two arc-shaped R angles 21 can between 150 °-170 °, and in the present embodiment, gradient adopts 162 °.The radius at two arc-shaped R angles can control between 0.2mm-1.5mm.By the way, in bearing pin head bushing inlet part, be first pressed into lining 3, lining 3 is made up of substrate layer 31, PTFE lubricating layer 32.Just start to be Spielpassung, along with entering of bearing pin starts there is magnitude of interference gradually.Because head is excessive circular arc process and has 162.Gradient, PTFE lubricating layer 32, by progressively squeezing action process, comes off so can not send lubricating layer.The moment of torsion of final hinge can control in the tolerance range of design.
Claims (6)
1. the pin shaft structure preventing hinge bush self-lubricating layer from coming off, comprises the pin body be connected with lining, is set in the bearing pin head of pin body end, it is characterized in that,
The composite structure that described bearing pin head and the outer side surface of pin body connecting end adopt the R angle of multiple arc-shaped to form, the chamfered transition through having certain slope between adjacent R angle connects.
2. a kind of pin shaft structure preventing hinge bush self-lubricating layer from coming off according to claim 1, is characterized in that, described bearing pin head and the outer side surface of pin body connecting end are the composite structure that two arc-shaped R angles are formed.
3. a kind of pin shaft structure preventing hinge bush self-lubricating layer from coming off according to claim 2, it is characterized in that, the connection side that two arc-shaped R angles lay respectively at bearing pin head and pin body and the changeover portion formed between connection side and bearing pin head upper and lower surface.
4. a kind of pin shaft structure preventing hinge bush self-lubricating layer from coming off according to claim 2, is characterized in that, the gradient angle on the inclined-plane formed between two arc-shaped R angles is 150 °-170 °.
5. a kind of pin shaft structure preventing hinge bush self-lubricating layer from coming off according to claim 4, is characterized in that, the gradient angle on the inclined-plane formed between two arc-shaped R angles is 162 °.
6. a kind of pin shaft structure preventing hinge bush self-lubricating layer from coming off according to claim 2, is characterized in that, the radius at two arc-shaped R angles is 0.2mm-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527569.3A CN104500552B (en) | 2014-10-09 | 2014-10-09 | Pin structure for preventing hinge lining self-lubricating layer shedding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527569.3A CN104500552B (en) | 2014-10-09 | 2014-10-09 | Pin structure for preventing hinge lining self-lubricating layer shedding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104500552A true CN104500552A (en) | 2015-04-08 |
| CN104500552B CN104500552B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410527569.3A Active CN104500552B (en) | 2014-10-09 | 2014-10-09 | Pin structure for preventing hinge lining self-lubricating layer shedding |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074701A (en) * | 2007-06-26 | 2007-11-21 | 中国航空工业第一集团公司成都飞机设计研究所 | Double-eccentric bushing and its adjustment |
| CN202991820U (en) * | 2012-12-27 | 2013-06-12 | 宁波广天赛克思液压有限公司 | Transmission shaft applied to hydraulic pump |
| CN203161791U (en) * | 2013-03-11 | 2013-08-28 | 慈溪市芮奇塑胶有限公司 | Front wheel fixing shaft for steamer |
| CN203585060U (en) * | 2013-09-27 | 2014-05-07 | 林士超 | Low-speed pivot structure assembly |
| CN204200829U (en) * | 2014-10-09 | 2015-03-11 | 上海奥林汽车安全系统有限公司 | Prevent the pin shaft structure that hinge bush self-lubricating layer comes off |
-
2014
- 2014-10-09 CN CN201410527569.3A patent/CN104500552B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074701A (en) * | 2007-06-26 | 2007-11-21 | 中国航空工业第一集团公司成都飞机设计研究所 | Double-eccentric bushing and its adjustment |
| CN202991820U (en) * | 2012-12-27 | 2013-06-12 | 宁波广天赛克思液压有限公司 | Transmission shaft applied to hydraulic pump |
| CN203161791U (en) * | 2013-03-11 | 2013-08-28 | 慈溪市芮奇塑胶有限公司 | Front wheel fixing shaft for steamer |
| CN203585060U (en) * | 2013-09-27 | 2014-05-07 | 林士超 | Low-speed pivot structure assembly |
| CN204200829U (en) * | 2014-10-09 | 2015-03-11 | 上海奥林汽车安全系统有限公司 | Prevent the pin shaft structure that hinge bush self-lubricating layer comes off |
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| Publication number | Publication date |
|---|---|
| CN104500552B (en) | 2017-02-08 |
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