CN105201995A - Bushing loose-proof structure - Google Patents
Bushing loose-proof structure Download PDFInfo
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- CN105201995A CN105201995A CN201510681886.5A CN201510681886A CN105201995A CN 105201995 A CN105201995 A CN 105201995A CN 201510681886 A CN201510681886 A CN 201510681886A CN 105201995 A CN105201995 A CN 105201995A
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- bolt
- lining
- inner sleeve
- bushing
- sleeve
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Abstract
The invention discloses a bushing loose-proof structure and belongs to the field of loose-proof structures. The bushing loose-proof structure comprises a bushing, a bolt and a nut, wherein the bushing comprises a rubber part, an inner sleeve and an outer sleeve; the outer surface of the inner sleeve is sleeved with the rubber part; the rubber part is sleeved with the outer sleeve; two or more grooves are formed in the inner circumferential surface of the inner sleeve, and axially and uniformly distributed along the inner circumferential surface of the inner sleeve; threads are formed at the lower end part of the bolt; a screw cap is arranged at the upper end part of the bolt; lug bosses are formed on the middle part of the bolt, axially and uniformly distributed at the periphery of the bolt, and in clearance fit with the grooves; the bolt penetrates through the bushing to match the lug bosses on the periphery of the bolt with the grooves in the inner circumferential surface of the inner sleeve; the threaded section of the bolt is fastened by the nut. Through adoption of the bushing loose-proof structure, the phenomena that the bolt looses and the bushing slips when the bolt pre-tightening force is reduced during long-term car driving, or a bolt mounting surface slips due to a relatively hard cast bushing mounting bracket can be effectively avoided.
Description
Technical field
The present invention relates to a kind of anti-loose structure field, in particular, the present invention relates to a kind of lining anti-loose structure.
Background technique
Lining is widely used in the car as buffer element, and the lining in chassis is ubiquitous, and great majority are rubber bushings, and engine mounting lining or suspension bushes have damping, every the effect such as making an uproar.Lining radial rigidity is much larger than rotational stiffness, and the difference of all directions rigidity makes lining to distribute load preferably, and rational dynamic changes process can improve the life-span of structure.The rubber element that what the buffering of lining or load distribution relied on is in lining, that is, in the course of the work, sleeve is fixed to lining, carrys out transmitted load by the distortion of rubber.
Under normal circumstances, sleeve is connected with lining mounting bracket by bolt, and under the effect of bolt pretightening, the frictional force of sleeve and mounting bracket makes sleeve maintain static in motor racing process.This lining mounting type can bring following problem: the first automobile is in movement process, and when fastening torque of bolt does not reach standard moment, the frictional force deficiency of sleeve and support has retrained the slip of lining, and lining rotational stiffness cannot be played a role; Second automobile is in travelling for a long time, and lining bolt can slowly get loose, the situation that the words checked not in time also can cause lining to skid, and even affects traffic safety; 3rd lining support is if foundry goods, and harder support makes lining bolt easily skid.
Through retrieval, China Patent No. CN201410564387.3, apply for March 25 2015 day for announcing, invention and created name is: micro-circular anti-loose structure, this application case relates to a kind of micro-circular anti-loose structure, and this structure comprises Socket casing, plug casing, seal ring, connecting ring, locking reed, rivet, jump ring etc.Described Socket casing adopts with connecting ring and is threaded, guide structure is designed with between Socket casing and plug casing, avoid connecting and relatively rotating in separation process, the locking reed of assembling in the annular groove of connecting ring, locking reed relies on rivet on connecting ring, can rotate with connecting ring, plug relevant position is processed with straight knurling or similar " V " type straight groove structure.Intermediate portion, locking reed both sides is " V " shape structure, and " V " shape both sides are non-symmetry structure, relies on the varying strength of reed diverse location, provides different moment of rotation, prevent connector accidental release.Present invention achieves the locking functions of micro-round thread bindiny mechanism, avoid micro-round thread linkage structure accidental release under the mechanical environment conditions such as vibration, impact, improve connection reliability, but this micro-circular anti-loose structure purposes is single, only can meet the locking functions of micro-round thread bindiny mechanism.
Summary of the invention
1. invent the technical problem that will solve
The object of the invention is to overcome the situation that in prior art, lining slides around sleeve axis, provide a kind of lining anti-loose structure, the present invention can effectively avoid automobile to travel the decline bolt that causes of lower bolt pretightening for a long time getting loose and lining skids, or the phenomenon that the bolt attachment face that causes of harder foundry goods lining mounting bracket skids.
2. technological scheme
For achieving the above object, technological scheme provided by the invention is:
A kind of lining anti-loose structure of the present invention, comprise lining, screw bolt and nut, described lining comprises rubber parts, inner sleeve and outer sleeve, the outer surface of described inner sleeve is arranged with rubber parts, described rubber parts is arranged with outer sleeve, the length of described inner sleeve is greater than the length of outer sleeve, and described inner sleeve inner peripheral surface is provided with two or more grooves, and described groove is axially uniformly distributed along inner sleeve inner peripheral surface;
Described bolt underpart is provided with screw thread, upper end portion is provided with nut, described bolt intermediate portion is provided with boss, described boss is uniformly distributed in the periphery of bolt vertically, described boss and groove Spielpassung, described bolt makes the fit depressions of boss on bolt periphery and inner sleeve inner peripheral surface through lining, and the thread section of described bolt passes through fastening nuts.
Further, Spielpassung between described groove and boss, gap control is within 1mm.
Further, described inner sleeve inner peripheral surface is provided with three grooves.
Further, be provided with compression spring between described nut and lining, described compression spring is spherical pad.
Further, described inner sleeve and outer sleeve are steel material.
3. beneficial effect
Adopt technological scheme provided by the invention, compared with prior art, there is following remarkable result:
(1) a kind of lining anti-loose structure of the present invention, in invention, bolt intermediate portion is provided with boss, boss is uniformly distributed in the periphery of bolt vertically, and inner sleeve inner peripheral surface is provided with two or more grooves, and groove is axially uniformly distributed along inner sleeve inner peripheral surface; Boss and groove Spielpassung, bolt makes the fit depressions of boss on bolt periphery and inner sleeve inner peripheral surface through lining, the use of bolt and inner sleeve assembly structure can effectively prevent lining from skidding around axis, avoid automobile to travel the lower bolt pretightening bolt caused that declines for a long time and get loose, or the bolt attachment face that harder foundry goods lining mounting bracket causes skids.
(2) a kind of lining anti-loose structure of the present invention, invention medi-spring pad is through techniques such as punching press, cold-heading, carbo-nitridings, pad is made to have deformation resilience ability, and compression spring is spherical pad herein, spherical pad has retaining effect, in bolt axis to there is stress in it when fastening, increases the frictional force between screw thread, and bolt when can both effectively prevent lining from installing gets loose.
(3) a kind of lining anti-loose structure of the present invention, the lining in invention, bolt and compression spring utilization rate is in the car high, and action effect is obvious, and structure is simple, can produce in batches as general part.
(4) a kind of lining anti-loose structure of the present invention, the anti-loose structure cost provided in invention is lower, production is easy to realize, and is convenient to installation and removal.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of lining anti-loose structure of the present invention;
Fig. 2 is the perspective view of lining in the present invention;
Fig. 3 is the left view of lining in the present invention;
Fig. 4 is the perspective view of medi-spring pad of the present invention.
Label declaration in schematic diagram:
1, rubber parts; 2, inner sleeve; 3, outer sleeve; 4, groove; 5, boss; 6, bolt; 7, nut; 8, compression spring.
Embodiment
For understanding content of the present invention further, the present invention is described in detail by reference to the accompanying drawings.
embodiment 1
Composition graphs 1, Fig. 2, Fig. 3 and Fig. 4, a kind of lining anti-loose structure of the present invention, comprise lining, bolt 6 and nut 7, lining is a kind of steel material, lining comprises rubber parts 1, inner sleeve 2 and outer sleeve 3, the outer surface of described inner sleeve 2 is arranged with rubber parts 1, described rubber parts 1 is arranged with outer sleeve 3, the length of described inner sleeve 2 is greater than the length of outer sleeve 3, described inner sleeve 2 inner peripheral surface is provided with two or more grooves 4, and described groove 4 is axially uniformly distributed along inner sleeve 2 inner peripheral surface; Described bolt 6 underpart is provided with screw thread, upper end portion is provided with nut, described bolt 6 intermediate portion is provided with boss 5, described boss 5 is uniformly distributed in the periphery of bolt 6 vertically, described boss 5 and groove 4 Spielpassung, gap control is within 1mm, and described bolt 6 makes the boss 5 on bolt 6 periphery match with the groove 4 of inner sleeve 2 inner peripheral surface through lining, and the thread section of described bolt 6 is fastening by nut 7.Be provided with compression spring 8 between described nut 7 and lining, described compression spring 8 is spherical pad.
In the present embodiment, the function of lining is mainly reflected on rubber parts 1, and rubber parts 1 is bonded into one by sulfuration and inner sleeve 2 and outer sleeve 3.Be relative motionless when inner sleeve 2 is urgent with mounting bracket bolt 6 under normal circumstances, but sometimes due to the reduction of bolt 6 pretightening force or the skidding of mounting bracket surface of contact, lining easily slide around sleeve axis.In order to avoid above-mentioned situation occurs, the bush structure of a kind of inner sleeve 2 with three grooves 4 is designed by turnery, three grooves 4 in 120 degree angle Central Symmetries and shape and size unanimously, the inside and outside fan-shaped arc length of each groove 4 part is 1/6th of respective full circle girth.During assembling, bolt 6 is through inner sleeve 2, in order to coordinate with the groove 4 on inner sleeve 2, bolt 6 end thread goes out three in 120 degree of equally distributed boss 5 in angle with the surface of lower portion also car, the shape of boss 5 is the same with the groove 4 on inner sleeve 2, size is more smaller than the groove 4 on inner sleeve 2, bolt 6 and inner sleeve 2 Spielpassung, in order to improve assembly precision, gap control is within 1mm.The quantity of groove 4 and boss 5, size and layout angle can be determined according to the bush structure of reality or technological requirement.In order to solve the problem that lining bolt 6 pretightening force reduces or bolt 6 gets loose, the compression spring 8 that assembling one is annular inside nut 7, compression spring 8 is truncated conical shape when not stressing, when nut 7 is tightened, compression spring 8 pressurized forms a plane, and now compression spring 8 has the trend returning to original form, and self is with certain spring-back force, this spring-back force is overcome by nut 7, makes nut 7 be not easy to loosen, thus prevents bolt 6 from loosening.Compression spring 8 is stamping part, and the pad complete to punching press carries out cold-heading, and effects on surface carries out the heat treatments such as carbo-nitriding.Compression spring 8 thickness 2mm, according to the difference of actual bolt 6 specification, the thickness of compression spring 8 can suitably change.The present embodiment medi-spring pad 8 is spherical pad, and spherical pad has retaining effect, and when fastening, it axially exists stress at bolt 6, and increase the frictional force between screw thread, the bolt 6 when can effectively prevent lining from installing gets loose.
In the present embodiment, bolt 6 makes the boss 5 on its periphery match with the groove 4 of inner sleeve 2 inner peripheral surface through lining.Spielpassung between boss 5 and groove 4, can prevent lining from sliding around bolt 6; Add spherical pad and have the auxiliary of retaining effect, axially there is stress at bolt 6 in it when fastening, increases the frictional force between screw thread, solves the problem that lining bolt 6 pretightening force reduces or bolt 6 gets loose.Reduction due to bolt 6 pretightening force can cause lining to slide around sleeve axis, in sum both be combined, and more effectively prevents lining from sliding around sleeve axis, thus ensure that automobile Security in the process of moving.
embodiment 2
A kind of lining anti-loose structure of the present embodiment, its basic structure is with embodiment 1, and difference is: the inner sleeve 2 in the present embodiment is with the bush structure of four grooves 4, and bolt 6 is got on the bus out four boss 5 matched with groove 4.
Schematically above be described the present invention and mode of execution thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the mode of structure similar to this technological scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (5)
1. a lining anti-loose structure, comprise lining, it is characterized in that: also comprise bolt (6) and nut (7), described lining comprises rubber parts (1), inner sleeve (2) and outer sleeve (3), the outer surface of described inner sleeve (2) is arranged with rubber parts (1), described rubber parts (1) is arranged with outer sleeve (3), the length of described inner sleeve (2) is greater than the length of outer sleeve (3), described inner sleeve (2) inner peripheral surface is provided with two or more grooves (4), described groove (4) is axially uniformly distributed along inner sleeve (2) inner peripheral surface,
Described bolt (6) underpart is provided with screw thread, upper end portion is provided with nut, described bolt (6) intermediate portion is provided with boss (5), described boss (5) is uniformly distributed in the periphery of bolt (6) vertically, described boss (5) and groove (4) Spielpassung, described bolt (6) makes the boss (5) on bolt (6) periphery match with the groove (4) of inner sleeve (2) inner peripheral surface through lining, and the thread section of described bolt (6) is fastening by nut (7).
2. a kind of lining anti-loose structure according to claim 1, is characterized in that: Spielpassung between described groove (4) and boss (5), gap control is within 1mm.
3. a kind of lining anti-loose structure according to claim 1, is characterized in that: described inner sleeve (2) inner peripheral surface is provided with three grooves (4).
4. a kind of lining anti-loose structure according to claim 1, is characterized in that: be provided with compression spring (8) between described nut (7) and lining, and described compression spring (8) is spherical pad.
5. a kind of lining anti-loose structure according to claim 4, is characterized in that: described inner sleeve (2) and outer sleeve (3) are steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510681886.5A CN105201995A (en) | 2015-10-21 | 2015-10-21 | Bushing loose-proof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510681886.5A CN105201995A (en) | 2015-10-21 | 2015-10-21 | Bushing loose-proof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105201995A true CN105201995A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510681886.5A Pending CN105201995A (en) | 2015-10-21 | 2015-10-21 | Bushing loose-proof structure |
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| Country | Link |
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| CN (1) | CN105201995A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980179A (en) * | 2018-07-28 | 2018-12-11 | 苏州速腾电子科技有限公司 | One kind is only loosened the screw a little |
| CN110576881A (en) * | 2018-06-08 | 2019-12-17 | 沈阳铁路信号有限责任公司 | Ballastless track bed transponder mounting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000193003A (en) * | 1998-11-10 | 2000-07-14 | Tokai Rubber Ind Ltd | Engine roll mount for automobile |
| CN103836103A (en) * | 2012-11-21 | 2014-06-04 | 重庆长安汽车股份有限公司 | Automobile rear suspension bushing |
| CN203780611U (en) * | 2014-03-12 | 2014-08-20 | 北京汽车股份有限公司 | Bushing and automobile |
| CN104589992A (en) * | 2015-01-26 | 2015-05-06 | 安徽江淮汽车股份有限公司 | Suspension structure |
| CN205207391U (en) * | 2015-10-21 | 2016-05-04 | 芜湖伯拉电子商贸有限公司 | Bush anti loosening structure |
-
2015
- 2015-10-21 CN CN201510681886.5A patent/CN105201995A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000193003A (en) * | 1998-11-10 | 2000-07-14 | Tokai Rubber Ind Ltd | Engine roll mount for automobile |
| CN103836103A (en) * | 2012-11-21 | 2014-06-04 | 重庆长安汽车股份有限公司 | Automobile rear suspension bushing |
| CN203780611U (en) * | 2014-03-12 | 2014-08-20 | 北京汽车股份有限公司 | Bushing and automobile |
| CN104589992A (en) * | 2015-01-26 | 2015-05-06 | 安徽江淮汽车股份有限公司 | Suspension structure |
| CN205207391U (en) * | 2015-10-21 | 2016-05-04 | 芜湖伯拉电子商贸有限公司 | Bush anti loosening structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110576881A (en) * | 2018-06-08 | 2019-12-17 | 沈阳铁路信号有限责任公司 | Ballastless track bed transponder mounting device |
| CN108980179A (en) * | 2018-07-28 | 2018-12-11 | 苏州速腾电子科技有限公司 | One kind is only loosened the screw a little |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |