CN102022418A - Dustproof apparatus applicable to flexible shaft - Google Patents
Dustproof apparatus applicable to flexible shaft Download PDFInfo
- Publication number
- CN102022418A CN102022418A CN2009101768328A CN200910176832A CN102022418A CN 102022418 A CN102022418 A CN 102022418A CN 2009101768328 A CN2009101768328 A CN 2009101768328A CN 200910176832 A CN200910176832 A CN 200910176832A CN 102022418 A CN102022418 A CN 102022418A
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- CN
- China
- Prior art keywords
- flexible axle
- proof boot
- flexible shaft
- dirt
- dust guard
- 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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Abstract
The present invention provides a dustproof apparatus applicable to flexible shaft, which comprises a metallic dustproof sleeve and a felt loop, wherein the metallic dustproof sleeve is of a cylinder-shaped structure with an annular groove provided therein, and the felt loop is installed in the annular groove. Threads are arranged in the inner wall of the right end of the metallic dustproof sleeve. The internal diameter of the left end of the metallic dustproof sleeve is a little bit lager than the external diameter of smaller end of the flexible shaft. The invention has the advantages that the sealing property of the flexible shaft is excellent, the apparatus is excellent in dustproof effect, applicable to dusty, oily and washy severe environment, simple in structure, long in service lifetime and small in size, no interfere with the fixed surface of other parts or the fixed surface of flexible shaft may occur; the friction of the flexible shaft does not increase after the installation of the apparatus; the flexible shaft has small friction force and small sense of force.
Description
Technical field
The invention belongs to mechanical design field, a kind of dust guard that is applied to flexible axle of specific design.
Background technique
Dust guard is the decision flexible axle reliability and the critical component in working life, the present invention relates to a kind of flexible axle dust guard that is applied to.
The sealing of flexible axle dust guard has directly determined the reliability and the working life thereof of flexible axle.Problems such as the sealing of dust guard is poor, the life-span is low all can directly cause flexible axle variety of issue in use to occur, and main cause is the gap that dust, oil, water have entered flexible axle mandrel and outer tube wall, and phenomenon is that flexible axle can not use and can not repair.
At present, known flexible axle dust guard mostly is to be the dirt-proof boot (seeing Fig. 1 bellows formula dirt-proof boot sectional drawing) of the stretching leather bellow formula made of material with fourth hydrogen rubber or plastic cement bellows.The termination of mandrel is passed from the dirt-proof boot center line, and dirt-proof boot one end and mandrel are fixed, and the other end and flexible axle rigid outer tube fixed end are connected and fixed.When flexible axle was worked, stretching leather bellow formula dirt-proof boot carried out relative movement with mandrel and outer tube, can stop that dust enters the gap of mandrel and outer tube wall.
This type of dirt-proof boot is applied in dust is few in the air, steam the is few good outside Environmental Conditions more, and be not suitable for the abominable operating mode of many dust, heavy wool, many water, evidence under this operating mode because dustproof poor effect can occur making flexible axle to occur freezing, stop up, rust is waited indefinitely phenomenon.And the diameter of the dirt-proof boot of stretching leather bellow formula is generally about 2 times of flexible axle central siphon diameter, easily takes place when narrow and small installing space or flexible axle are close to a mounted on surface and other parts or the surperficial phenomenon that contacts or interfere.When flexible axle was worked, self will move this dirt-proof boot with mandrel, and material is high-abrasive material not, and contacted or interfered the position repeated friction, caused the dirt-proof boot breakage, the dustproof inefficacy.In addition because this type of dirt-proof boot seals mandrel and ambient air fully, during flexible axle work in the bellows volume of sealing air can increase the frictional force of flexible axle like this with push-and-pull campaign increase with reduce, increased the power sense of flexible axle.
Summary of the invention
Purpose of the present invention: a kind of dust guard that is applied to flexible axle is provided, dustproof better effects if, volume is little, can not interfere with other parts or flexible axle fixed surface, can not increase the frictional force of flexible axle after the installation.
Realize the technological scheme of the object of the invention: a kind of dust guard that is applied to flexible axle is made up of a metal dirt-proof boot and felt collar, the metal dirt-proof boot be one columnar structured, inside is provided with a circular groove, felt collar is arranged in this circular groove; Be provided with screw thread on the right-hand member inwall of metal dirt-proof boot, the left end internal diameter of metal dirt-proof boot is bigger slightly than the thin end external diameter of flexible axle.
The outside annular knurl that adopts of above-mentioned metal dirt-proof boot is processed.
Above-mentioned metal dirt-proof boot adopts No. 45 steel.
Above-mentioned felt collar adopts industrial fine felt to make.
The thin end of above-mentioned felt collar and flexible axle is an interference fit.
The beneficial effect that the present invention obtains: (1) good dustproof effect, can make flexible axle have stronger sealing, can be applicable to the rugged environment service condition of many dust, heavy wool, many water; (2) simple in structure, the life-span is long, and volume is little, can not interfere with other parts or flexible axle fixed surface, can not increase the frictional force of flexible axle after the installation; (3) frictional force of flexible axle is little, and the power sense is little.
Description of drawings
Fig. 1 is a bellows formula dirt-proof boot sectional drawing;
Fig. 2 be dust guard of the present invention partly cut open figure;
Fig. 3 is the erection drawing of dust guard and flexible axle.
1-metal dirt-proof boot; The 2-felt collar; 3-flexible axle outer tube; 4-metal dirt-proof boot.
Embodiment
Shown in Fig. 2 and 3, a kind of dust guard of the present invention is made up of metal dirt-proof boot 1 and felt collar 2.Metal dirt-proof boot 1 be one columnar structured, metal dirt-proof boot 1 employed material is No. 45 steel, outside adopts annular knurl processing, inside is provided with a circular groove.Felt collar 2 is set in the circular groove of metal dirt-proof boot inside.The big end that is provided with screw thread and flexible axle 4 on the right-hand member inwall of metal dirt-proof boot 1 now cooperates with screw thread tightens sealing, and the left end internal diameter of metal dirt-proof boot 1 is bigger slightly than the thin end external diameter of flexible axle 4, and flexible axle 4 just can pass, and can freely stretch.It is material that felt collar 2 adopts industrial fine felt, is convenient to air turnover dirt-proof boot 4.Felt collar 2 is an interference fit with the thin end of flexible axle 4, can well seal like this, prevents that dust from entering dirt-proof boot 1 inside, and flexible axle 4 thin ends can be flexible from the central axis of dirt-proof boot 1 easily, and the shielding dust.
Claims (5)
1. dust guard that is applied to flexible axle, it is characterized in that: this dust guard is made up of a metal dirt-proof boot (1) and felt collar (2), metal dirt-proof boot (1) be one columnar structured, inside is provided with a circular groove, felt collar (2) is arranged in this circular groove; Be provided with screw thread on the right-hand member inwall of metal dirt-proof boot (1), the left end internal diameter of metal dirt-proof boot (1) is bigger slightly than the thin end external diameter of flexible axle (4).
2. a kind of dust guard that is applied to flexible axle as claimed in claim 1 is characterized in that: the outside annular knurl that adopts of above-mentioned metal dirt-proof boot (1) is processed.
3. a kind of dust guard that is applied to flexible axle as claimed in claim 1 is characterized in that: above-mentioned metal dirt-proof boot (1) adopts No. 45 steel.
4. a kind of dust guard that is applied to flexible axle as claimed in claim 1 is characterized in that: above-mentioned felt collar (2) adopts industrial fine felt to make.
5. as claim 1 or 4 described a kind of dust guards that are applied to flexible axle, it is characterized in that: above-mentioned felt collar (2) is an interference fit with the thin end of flexible axle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101768328A CN102022418A (en) | 2009-09-22 | 2009-09-22 | Dustproof apparatus applicable to flexible shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101768328A CN102022418A (en) | 2009-09-22 | 2009-09-22 | Dustproof apparatus applicable to flexible shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102022418A true CN102022418A (en) | 2011-04-20 |
Family
ID=43864070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101768328A Pending CN102022418A (en) | 2009-09-22 | 2009-09-22 | Dustproof apparatus applicable to flexible shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102022418A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285242A (en) * | 2015-06-01 | 2017-01-04 | 开开特股份公司 | As the brake cable of the executor of functional unit in motor vehicles |
| CN112037342A (en) * | 2019-05-14 | 2020-12-04 | 极易停(重庆)智慧科技有限责任公司 | Screw type parking pile and parking charging management system |
-
2009
- 2009-09-22 CN CN2009101768328A patent/CN102022418A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285242A (en) * | 2015-06-01 | 2017-01-04 | 开开特股份公司 | As the brake cable of the executor of functional unit in motor vehicles |
| CN106285242B (en) * | 2015-06-01 | 2019-04-02 | 开开特股份公司 | Brake cable as the actuator of functional unit in motor vehicle |
| CN112037342A (en) * | 2019-05-14 | 2020-12-04 | 极易停(重庆)智慧科技有限责任公司 | Screw type parking pile and parking charging management system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110420 |