CN204403105U - A kind of lock washer - Google Patents
A kind of lock washer Download PDFInfo
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- CN204403105U CN204403105U CN201520016708.6U CN201520016708U CN204403105U CN 204403105 U CN204403105 U CN 204403105U CN 201520016708 U CN201520016708 U CN 201520016708U CN 204403105 U CN204403105 U CN 204403105U
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- lock washer
- small tooth
- angle
- packing ring
- hardened layer
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Abstract
The utility model discloses a kind of lock washer, the material of lock washer is stainless steel, comprise large teeth and small tooth, the long limit of described small tooth cross section and minor face angle are 80 ~ 110 °, the degree of depth of small tooth is 0.1 ~ 0.3 millimeter, and the long limit of small tooth cross section and the angle of packing ring base plane are 5 ~ 10 °; The long limit of large teeth cross section and the included angle A of the base plane of lock washer are than large 0.1 ° ~ 1 ° of the lead angle B of matching used bolt or nut; The surface of described lock washer has the hardened layer that one deck is formed through low temperature carburization, low temperature nitriding or low-temperature nitrocarburizing process treating.Lock washer of the present utility model, anti-loosing effect is good, and the cost of product is also lower.
Description
[technical field]
The utility model relates to lock washer.
[background technique]
As shown in Figure 1, lock washer comprises the radial small tooth 101 and large teeth 102 that are separately positioned on packing ring two sides, and the facing angle of inclination of large teeth 102 is greater than the lead angle of matching used bolt or nut.As shown in Figure 2 with shown in Fig. 3, be respectively the plan view in the face at small tooth place and the face at large teeth place, packing ring is circular hollow structure, and small tooth and large teeth are distributed in the upper and lower surface of packing ring respectively, and the face teeth quantity at small tooth place is many, size is little; The face teeth quantity at large teeth place is few, size is large.
As shown in Figure 4, be the structural representation that two packing rings coordinate when forming two-fold self-locking packing ring.The canine tooth facing of two packing rings 1 and 2 is engaged mutually.During work, bolt sleeve is put into through hole or the tapped hole of the object of installation to be fixed after lock washer, the little tooth of upper surface of top-lock packing ring contacts with bolt head, the little tooth of lower surface of lower end lock washer and hard-wired object contact.If through hole, lock washer and nut overlap by stretch out at bolt one successively, and in one that now stretches out, the little tooth of upper surface of top-lock packing ring and hard-wired object contact, the little tooth of lower surface of lower end lock washer contacts with nut.When bolt head is screwed, or when screw bolt and nut is tightened, an outer side surface of two-fold self-locking anti-loosing packing ring, namely the cusp in the small tooth face of a packing ring is pressed into the contact surface of the object of installation to be fixed, another outer side surface of two-fold self-locking anti-loosing packing ring, namely in the cusp dump bolt head in the small tooth face of another packing ring or the contact surface of nut.When bolt is vibrated, bolt head is by the pine that shakes, or loosening trend can be produced between bolts and nuts, now the small tooth face of two panels packing ring is respectively by respective antagonization, the packing ring be wherein engaged with bolt head or nut can rotate to the direction of unclamping with bolt head or nut, thus the relative changing of the relative positions lifting of the large teeth of canine tooth facing inside band washer, because inside packing ring, the angle of inclination of canine tooth facing is greater than the lift angle of fixing bolt screw thread, so the lifting distance that two-fold self-locking anti-loosing packing ring produces because staggering is greater than the change of the fastening length that bolt looseness brings, lifting tension force produces a higher resistivity to stand judder in bolt joint, thus reach excellent anti-loosing effect.Two-fold self-locking anti-loosing packing ring has been widely used in the fields such as track traffic, petrochemical industry, the energy, automobile making, engineering machinery and marine industry.
At present, the anti-loosing effect of stainless steel two-fold self-locking packing ring is usually not so good on the market.And the stainless steel lock washer that Nord-Lock company of Sweden produces adopts its proprietary secret hardening technique process, thus obtain good anti-loosing effect, correspondingly, the price of product is also higher.
[model utility content]
Technical problem to be solved in the utility model is: make up above-mentioned the deficiencies in the prior art, proposes a kind of lock washer, and anti-loosing effect is better, and the cost of product is also lower.
Technical problem of the present utility model is solved by following technological scheme:
A kind of lock washer, the material of described lock washer is stainless steel, comprises large teeth and small tooth, and the long limit of described small tooth cross section and minor face angle are 80 ~ 110 °, the degree of depth of small tooth is 0.1 ~ 0.3 millimeter, and the angle of the transversal face length limit of small tooth and packing ring base plane is 5 ~ 10 °; The long limit of large teeth cross section and the included angle A of lock washer base plane are than large 0.1 ° ~ 1 ° of the lead angle B of matching used bolt or nut; The surface of described lock washer has the hardened layer that one deck is formed after low temperature carburization, low temperature nitriding or low-temperature nitrocarburizing process treating.
The beneficial effect that the utility model is compared with the prior art is:
Lock washer of the present utility model, for the packing ring of stainless steel, by the hardened layer that the specified structure matching surface low temperature carburization of teeth, low temperature nitriding or low-temperature nitrocarburizing process are formed, the large teeth that small tooth is sharp and angle of inclination is suitable that specific teeth structure is corresponding sharp-pointed, the corresponding higher surface hardness of hardened layer (exceeds the horizontal 400HV of universal hardness on the market
0.05).Like this, the small tooth point in the small tooth face when bolt is tightened outside packing ring more sharply, harder, more easily can be pressed into surface of contact, with surface of contact firm engagement.And the structure of large teeth makes the large teeth of occlusion mutually to offset one from another to carry out locking, and the structure of small tooth etc. can be coordinated, guarantee small tooth imbedding and contact face preferably, guarantee that anti-loosing effect is better.The hardened layer on lock washer surface adopts low temperature carburization, low temperature nitriding or low-temperature nitrocarburizing process to be formed, the easy easy control of processing procedure, thus the cost of lock washer is lower.
[accompanying drawing explanation]
Fig. 1 is the structural representation of existing lock washer;
Fig. 2 is the schematic top plan view in the face at the small tooth place of the lock washer shown in Fig. 1;
Fig. 3 is the schematic top plan view in the face at the large teeth place of the lock washer shown in Fig. 1;
Fig. 4 is the structural representation of the lock washer shown in two Fig. 1 when being combined to form two-fold self-locking packing ring;
Fig. 5 is the close-up schematic view of the relevant small tooth of lock washer in embodiment of the present utility model;
Fig. 6 is the close-up schematic view of the relevant large teeth of lock washer in embodiment of the present utility model;
Fig. 7 is the lock washer structure schematic diagram under the microscope of the 316L stainless steel in embodiment of the present utility model;
Fig. 8 is the lock washer structure schematic diagram under the microscope of 304 stainless steels in embodiment of the present utility model;
Fig. 9 is the impression figure of the nut contact surface that No. 1 lock washer is corresponding when testing in embodiment of the present utility model;
Figure 10 is the impression figure of the nut contact surface that No. 2 lock washers are corresponding when testing in embodiment of the present utility model;
Figure 11 is the impression figure of the nut contact surface that No. 3 lock washers are corresponding when testing in embodiment of the present utility model;
Figure 12 is the impression figure of the nut contact surface that No. 4 lock washers are corresponding when testing in embodiment of the present utility model.
[embodiment]
Contrast accompanying drawing below in conjunction with embodiment the utility model is described in further details.
Design of the present utility model is: the problem being solved anti-loosing effect aspect by the improvement matching surface hardened layer of packing ring teeth structure (teeth sharpness, the degree of depth, teeth inclination).For the lock washer of stainless steel, its disadvantage by prior heat treatment process (as quenching), surface hardness is improved.For this reason, the packing ring of most of manufacturer production on the market, adopt cold working to form work hardening layer on surface, after work-hardening, hardness is also only 250 ~ 400H V
0.05.Nord-Lock company of Sweden adopts its proprietary technology to process packing ring, but after process, washer face hardness is also only greater than 520HV
0.05.The present inventor proposes to form hardened layer to improve washer face hardness by carrying out low temperature carburization, low temperature nitriding or low-temperature nitrocarburizing process treating to the stainless steel lock washer of specified structure.And then in conjunction with specific architecture advances, make teeth sharply sharp, hardness is high, thus teeth easily can be pressed into surface of contact, with surface of contact strong bonded, strengthen anti-loosing effect.
The lock washer of this embodiment, material is stainless steel, such as Austenitic Stainless Steel.Packing ring comprises large teeth and small tooth, and the long limit of described small tooth cross section and minor face angle are 80 ~ 110 °, and the degree of depth of small tooth is 0.1 ~ 0.3 millimeter, and the long limit of small tooth cross section and the angle of packing ring base plane are 5 ~ 10 °; The described long limit of large teeth cross section and the included angle A of lock washer base plane are than large 0.1 ° ~ 1 ° of the lead angle B of matching used bolt or nut; The surface of described lock washer has the hardened layer that one deck is formed after low temperature carburization, low temperature nitriding or low-temperature nitrocarburizing process treating.
Particularly, as shown in Figure 5, be the close-up schematic view about small tooth cross section.Small tooth cross section is made up of long limit M and minor face N.In order to reach anti-loosing effect, when requiring that threaded fastener loosens, small tooth inversely can loosen direction deeper pressed-in nut, bolt head and the object that is fixed.For forward spiral marking connection (fastening clockwise), in the face of small tooth face time, along clockwise direction, minor face on front, long limit rear.For reverse thread connection (fastening counterclockwise), when small tooth face, along clockwise direction, long limit at front, minor face rear.Figure 5 shows that the small tooth of forward spiral marking connection.
The long limit of small tooth and minor face angle C=80 ~ 110 °.Current small tooth angle is on the market commonly and is greater than 110 °, is less than or equal to the scope of 150 °, when small tooth angle reduces to make tip more sharp-pointed, is more easily pressed into fixation, thus plays anti-loosing effect time fastening under identical moment.But too little small tooth angle can cause small tooth insufficient strength, is easily collapsed by pressure time fastening, thus affect anti-loosing effect or cause lock washer not to be recycled.When angle C is when the scope of 80 ~ 110 °, preferably in the scope of 85 ~ 100 °, empirical tests, can meet the requirement of sharpness on the one hand, on the other hand, intensity is also suitable.
Small tooth depth H 1=0.1 ~ 0.3 millimeter.Small tooth is too shallow, and the impression that nut, bolt head or the object that is fixed stay is also shallow, does not reach anti-loosing effect; Small tooth is too dark, and the prerequisite lower gasket intensity do not increased at gasket thickness can decline.When depth H 1 is when the scope of 0.1 ~ 0.3 millimeter, empirical tests, can produce enough dark impression on the one hand when locking, on the other hand, the thickness of packing ring and intensity are also suitable.
Transversal face length limit, small tooth tip and packing ring base plane angle D=5 ~ 10 °.D increases, and C can be made to reduce, is conducive to improving the sharpness of small tooth, but for a kind of lock washer of specification, when the small tooth degree of depth one regularly, D is larger, means that teeth quantity is more, adds processing cost.When D is within the scope of 5 ~ 10 °, packing ring has certain sharpness, and teeth reasonable quantity, processing cost is unlikely too high.
As shown in Figure 6, be the close-up schematic view about large teeth cross section.Large teeth cross section is made up of long limit P and minor face Q.According to the locking principle of two-fold lock washer, the facing angle of inclination A (i.e. the angle of transversal face length limit and lock washer base plane) of large teeth is greater than the lead angle B of matching used bolt or nut.For forward spiral marking connection (fastening clockwise), when canine tooth facing, along clockwise direction, the long limit of large teeth at front, minor face rear.For reverse thread connection (fastening counterclockwise), when canine tooth facing, along clockwise direction, the minor face of large teeth on front, long limit rear.Figure 6 shows that the large teeth of forward spiral marking connection.
Included angle A=(B+0.1 °) ~ (B+1 °) of the large long limit of teeth cross section and lock washer base plane.When using the screwing system of two-fold lock washer to loosen because vibration produces, the canine tooth facies occlusalis dentis of two lock washers producing the tangential force F along loosening direction, can be decomposed into further along the impacting force F1 of large teeth cross section long limit normal and the climbing power F2 along long side direction.A is less than B, can not be locking.Along with A increases, impacting force F1 increases, and climbing power F2 reduces, and two-fold lock washer canine tooth facing is interlocked mutually, and now, the impacting force that small tooth and embedded surface are born becomes large.But experiment finds, A is too large, when vibrating generation, impacting force F1 is very large, and power F2 is less in climbing, along with threaded fastener loosens, although two-fold lock washer can not the changing of the relative positions, but result is very large tangential force to be added between small tooth and embedded surface, and small tooth can be made on the contrary to slide relative to embedded surface, occlusion is caused to lose efficacy, also i.e. locking inefficacy, sharp-pointed teeth have also scratched the surface structure of embedded surface simultaneously.Therefore, when the scope of larger than B 0.1 ° ~ 1 ° of A, can stagger mutually when standing judder in the face that large teeth can be made mutually to be engaged, and the power produced by the two-fold packing ring changing of the relative positions is resisted loosening further, thus effectively locking.
To sum up, when above-mentioned three parameter C, D, H are in above-mentioned scope, when the angle of A and B also meets above-mentioned relation, the gasket construction that each angle, depth parameter limit coordinates follow-up cure process can reach anti-loosing effect preferably.
The acquisition of said structure parameter, can adopt the mode of machining to obtain.Such as, the lock washer bought on the market generally adopts the technique of punching press and forging and stamping to produce, the small tooth tip angle C of the two-fold self-locking anti-loosing packing ring of stainless steel all being greater than 110 °, being less than or equal in the scope of 150 °, for this reason by tool mechanical processing angle is become more sharp-pointed.Although but the mode of this tool sharpening can obtain above-mentioned teeth structure, efficiency is lower, and cost is also higher.For this reason, preferably, the disposable shaping of the mode of metal injection moulding can be adopted to obtain the packing ring of said structure parameter.Particularly, metal injection moulding is prepared gasket construction and is comprised the following steps:
11) prepare injection moulding mould, described mould comprises cavity and cast gate, the structure shape of the corresponding described lock washer of shape of described cavity.
12) injection moulding: from described cast gate encapsulation molding feeding to described cavity, forms the lock washer agent structure with described teeth structure in described cavity.Feeding is that powder of stainless steel and Bond are mixed to get.Obtained feeding is added in injection machine, goes out blank through injection moulding.
13) through degreasing, sinter, go cast gate process after, obtained described lock washer.
The lock washer of the more above-mentioned M10 specification obtained through metal injection moulding mode and impact style, in this embodiment, the structure characteristic of lock washer prepared by metal injection moulding mode is: the C of each little tooth is distributed in the scope of 92 ~ 98 °, H is 0.15 millimeter, D is 7.5 °, B is 3 °, A is 3.5 °, larger than B 0.5 ° of A.The structure characteristic of lock washer prepared by impact style is: the C of each little tooth is distributed in the scope of 125 ~ 135 °, and H is 0.12 millimeter, and D is distributed in the scope of 6 ~ 6.5 °, and B is 3 °, and A is 5 °, larger than B 2 ° of A.To sum up, the small tooth tip of lock washer prepared by metal injection moulding mode is more sharp-pointed, and structure characteristic is more stable, disposable shaping can obtain corresponding structure.And the small tooth of lock washer prepared by impact style is sharp-pointed not, large teeth angle of inclination is also suitable not, needs, again in conjunction with the mode grinding teeth of tool mechanical processing, to make it meet specified structure requirement.Comparatively speaking, impact style efficiency is much lower.
By the optimal way of above-mentioned metal injection moulding, disposable shaping can obtain the packing ring meeting structural requirement, preparation efficiency is high, and cost is low, is applicable to large-scale mass production.
In addition, the stainless steel surfaces of lock washer of the present utility model has the hardened layer that one deck is formed through low temperature carburization, low temperature nitriding or low-temperature nitrocarburizing process treating.Use common low temperature carburization, low temperature nitriding or low-temperature nitrocarburizing technique (such as low-temperature ion carburization process, cryogenic gas carburization process, low temperature plasma nitriding technique, low temperature gas nitriding technique, low-temperature ion nitrogen-carbon cocementing process, cryogenic gas nitrogen-carbon cocementing process, low temperature salt-bath nitridation process) one deck hardened layer can be formed at the stainless steel surfaces of packing ring.Owing to being the hardened layer that low temperature carburization, low temperature nitriding or low-temperature nitrocarburizing process are formed, so be respectively carbon containing hardened layer, nitrogenous hardened layer or hardened layer that is nitrogenous and carbon in this hardened layer.Carbon, nitrogen all do not close with the chromaking in stainless steel and cause the poor chromium of stainless steel, namely can not affect stainless decay resistance.It should be noted that, low-temperature nitrocarburizing process is different from low temperature carbonitriding processing mode herein, and the former occupies leading role for nitrogen, and the carbon amounts of interpolation is few, plays booster action.And the latter occupies leading role for carbon, the nitrogen amount of interpolation is few, plays booster action.And in this embodiment, low-temperature nitrocarburizing processing mode can be suitable for, but low temperature carbonitriding processing mode cannot be applicable to this.
Usually, the case depth 8 ~ 40 microns of washer face.As shown in FIG. 7 and 8, be the lock washer structure schematic diagram under the microscope of this embodiment, Figure 7 shows that 316L stainless steel, the surface of lock washer has the hardened layer in brilliant white that a layer thickness is about 35 ~ 40 microns.Figure 8 shows that 304 stainless steels, the surface of lock washer has the hardened layer in brilliant white that a layer thickness is about 20 ~ 25 microns.Use HV-1000A microhardness testers test packing ring surface hardness, load 50g, 5 seconds power retention times, after tested, the stainless steel lock washer surface hardness after above-mentioned low temperature carburization cure process also cleaning is greater than 900HV
0.05, at 920 ~ 1148HV
0.05scope in (contrast on the market, the surface hardness by means of only the stainless lock washer of material of the same race of stamping process manufacture is only 250 ~ 288HV
0.05).In addition, test Corrosion Protection, for the Austenitic Stainless Steel lock washer containing Mo, as 316L, resistance to neutral salt spray test more than 1000 hours, without to get rusty variable color, for the Austenitic Stainless Steel lock washer not containing Mo, as 304, resistance to neutral salt spray test more than 200 hours, without to get rusty variable color.
Further, for verifying the anti-loosing effect of the lock washer of this embodiment.Prepare the packing ring of following 4 examples: 1, the ordinary construction prepared of stamping process on the market, and stainless steel surfaces do not have the packing ring of hardened layer, 2 this kind of washer combinations is formed two-fold self-locking packing ring, is defined as No. 1; 2, the ordinary construction prepared of stamping process on the market, and stainless steel surfaces has the packing ring of one deck hardened layer, 2 this kind of washer combinations is formed two-fold self-locking packing ring, is defined as No. 2; 3, structure characteristic described in this embodiment of preparing of metal injection moulding technique, and stainless steel surfaces does not have the packing ring of hardened layer, is defined as No. 3; 4, structure characteristic described in this embodiment of preparing of metal injection moulding technique, and stainless steel surfaces does not have the packing ring of hardened layer, is defined as No. 4.The specification of packing ring is all broadside M10.
During checking, adopt torque spanner to carry out fastening installation and removal to above-mentioned 4 kinds of two-fold self-locking packing rings and A2-70 bolt, nut and the object that is fixed under 33Nm moment to test, observe the changing of the relative positions situation of two-fold lock washer, just there is anti-loosing effect when two packing rings stagger.After tested, in No. 1 packing ring, the large teeth of two packing rings can not stagger, and both are interlocked all the time, do not have anti-loosing effect.No. 2 packing rings, the large teeth of two packing rings can not stagger, and anti-loosing effect is not obvious.No. 3 packing rings, the large teeth of two packing rings can not stagger, and do not have anti-loosing effect.No. 4 packing rings, the large teeth of two packing rings can offset one from another, and anti-loosing effect is good.
Further, the impression on the nut surface after dismounting test is observed.As shown in figs. 9 to 12, the impression figure on nut surface corresponding to above-mentioned 4 packing rings is followed successively by.Almost impression is not had in Fig. 9, impression in Figure 10 in nut pressurized plane is short, wide and shallow, and when work is described, the upper surface small tooth of upper end packing ring can not be engaged the surface of contact of nut well, nut can loosen due to vibration, and the anti-loosing effect of packing ring is not good.In Figure 11, the impression of lock washer on nut surface of contact prepared by metal injection moulding technique is long and narrow, illustrate that the reference level of pad is flat and small tooth tip is enough sharp-pointed, but impression is dark not, can not stop loosening of nut well.And in Figure 12, metal injection moulding and the lock washer prepared through low temperature carburization treatment process, impression on nut is not only narrow, long, and it is enough dark, when showing work, small tooth tip is sharp-pointed and hardness is high, the upper surface small tooth of upper end packing ring effectively can be engaged the nut surface of contact on top, and the lower surface small tooth of lower end packing ring effectively can be engaged the fixed object surface of contact of bottom, so overall anti-loosing effect is good.
In sum, the lock washer of this embodiment, through the design of the hardened layer that design and the surface of dimensional structure have, surface hardness is better, after two washer combinations form two-fold self-locking anti-loosing packing ring, large teeth be convenient to loosen stagger locking, small tooth is enough sharp-pointed, and hardness is enough high, small tooth effectively can be engaged the surface of contact of bolt head, nut and object to be fixed, therefore has good anti-loosing effect.By above-mentioned teeth respective outer side edges hardened layer, the anti-loosing effect of lock washer is good.
Preferably, in Fig. 6, canine tooth depth of threat degree H2=0.1 ~ 0.3 millimeter.When facing tilt angle D mono-timing of large teeth, large teeth are too shallow, mean that the width of large teeth diminishes, and angle of swing that can be effectively locking is along with diminishing, and anti-loosing effect is imperfect; Large teeth are too dark, and the prerequisite lower gasket intensity do not increased at gasket thickness can decline.When depth H 2 is in the scope of 0.1 ~ 0.3 millimeter, large teeth width is moderate, and the thickness of packing ring and intensity are also better, and final anti-loosing effect also further better.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, make some substituting or obvious modification without departing from the concept of the premise utility, and performance or purposes identical, all should be considered as belonging to protection domain of the present utility model.
Claims (7)
1. a lock washer, the material of described lock washer is stainless steel, comprise large teeth and small tooth, it is characterized in that: the long limit of described small tooth cross section and minor face angle are 80 ~ 110 °, the degree of depth of small tooth is 0.1 ~ 0.3 millimeter, and the long limit of small tooth cross section and the angle of packing ring base plane are 5 ~ 10 °; The described long limit of large teeth cross section and the included angle A of the base plane of lock washer are than large 0.1 ° ~ 1 ° of the lead angle B of matching used bolt or nut; The surface of described stainless steel lock washer has the hardened layer that one deck is formed through low temperature carburization, low temperature nitriding or low-temperature nitrocarburizing process treating.
2. lock washer according to claim 1, is characterized in that: the degree of depth of described large teeth is 0.1 ~ 0.3 millimeter.
3. lock washer according to claim 1, is characterized in that: the thickness of described hardened layer is 8 ~ 40 microns.
4. lock washer according to claim 3, is characterized in that: the thickness of described hardened layer is 35 ~ 40 microns.
5. lock washer according to claim 3, is characterized in that: the thickness of described hardened layer is 20 ~ 25 microns.
6. lock washer according to claim 1, is characterized in that: the material of described lock washer is Austenitic Stainless Steel.
7. lock washer according to claim 1, is characterized in that: the structure of described lock washer is obtained by metal injection moulding technique.
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| CN201520016708.6U CN204403105U (en) | 2015-01-08 | 2015-01-08 | A kind of lock washer |
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| CN201520016708.6U CN204403105U (en) | 2015-01-08 | 2015-01-08 | A kind of lock washer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533925A (en) * | 2015-01-08 | 2015-04-22 | 森科五金(深圳)有限公司 | Lock washer manufacturing method and lock washer |
| CN106763092A (en) * | 2017-03-11 | 2017-05-31 | 王金娣 | A kind of stop nut |
| WO2019128856A1 (en) * | 2017-12-25 | 2019-07-04 | 比亚迪股份有限公司 | Anti-loosening washer for threaded connector and preparation method therefor |
| CN112212094A (en) * | 2020-11-02 | 2021-01-12 | 安徽理工大学 | Detachable anti-loose self-tightening gasket half-flange joint and using method thereof |
| US11181139B2 (en) | 2016-01-12 | 2021-11-23 | Ejot Gmbh & Co. Kg | Securing element |
| CN114183454A (en) * | 2021-12-17 | 2022-03-15 | 张家陶 | Interlocking type locknut |
-
2015
- 2015-01-08 CN CN201520016708.6U patent/CN204403105U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533925A (en) * | 2015-01-08 | 2015-04-22 | 森科五金(深圳)有限公司 | Lock washer manufacturing method and lock washer |
| US11181139B2 (en) | 2016-01-12 | 2021-11-23 | Ejot Gmbh & Co. Kg | Securing element |
| CN106763092A (en) * | 2017-03-11 | 2017-05-31 | 王金娣 | A kind of stop nut |
| WO2019128856A1 (en) * | 2017-12-25 | 2019-07-04 | 比亚迪股份有限公司 | Anti-loosening washer for threaded connector and preparation method therefor |
| EP3734089A4 (en) * | 2017-12-25 | 2021-02-17 | BYD Company Limited | Anti-loosening washer for threaded connector and preparation method therefor |
| CN112212094A (en) * | 2020-11-02 | 2021-01-12 | 安徽理工大学 | Detachable anti-loose self-tightening gasket half-flange joint and using method thereof |
| CN112212094B (en) * | 2020-11-02 | 2024-05-28 | 安徽理工大学 | Detachable anti-loose self-tightening gasket half flange joint and use method thereof |
| CN114183454A (en) * | 2021-12-17 | 2022-03-15 | 张家陶 | Interlocking type locknut |
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