CN100487296C - Locking device for metal expansion pipe - Google Patents
Locking device for metal expansion pipe Download PDFInfo
- Publication number
- CN100487296C CN100487296C CNB2007100193127A CN200710019312A CN100487296C CN 100487296 C CN100487296 C CN 100487296C CN B2007100193127 A CNB2007100193127 A CN B2007100193127A CN 200710019312 A CN200710019312 A CN 200710019312A CN 100487296 C CN100487296 C CN 100487296C
- Authority
- CN
- China
- Prior art keywords
- slug
- slide block
- locking device
- pipe
- metal
- 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.)
- Expired - Fee Related
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Abstract
The present invention relates to a metal expansion pipe locking device. It includes metal internal pipe and metal external pipe, in the metal external pipe interior a liner is mounted and is fixed by means of nut, on the metal internal pipe and liner a locking device is mounted respectively. Said invention also provides the concrete structure of said locking device and its concrete working principle.
Description
Technical field
The present invention relates to the telescopic pipe locking device.
Background technique
Vacuum cleaner is the cleaning device of Modern Family's indispensability.The sweep-up pipe of existing vacuum cleaner has all adopted shrinking structure basically, and this structure is that interior pipe is inserted in the outer tube, and locks by locking device.When needs are regulated the length of telescopic pipe, as long as unclamp locking mechanism, interior pipe on demand length from outer tube is extracted out or pushed, lock locking device again and get final product.
Existing locking device mainly contains two kinds of push-key type and twist lock types, push-key type adopts the push-and-pull locking key to finish lock function, push-key type is to finish the flexible of telescopic pipe by pushing away the button that is fixed on the locking device on the outer tube, it comprises outer tube, interior pipe and telescopic control device, the upper surface of interior pipe is provided with equidistant bayonet socket, lower surface is provided with the slip locating slot, and pipe is located slip in allowing by semicircle slide bar in outer tube; Twist lock type is to adopt the turn locking key to finish lock function.Their deficiency is: this phenomenon occurs easilier after 1) might slippage, especially parts depreciation when telescopic pipe is subjected to big active force, thereby have unsafe hidden danger; 2) the flexible distance of telescopic pipe is fixed value, telescopic pipe can not be locked onto the arbitrary position; 3) structure is complicated, the dismounting inconvenience, and fabricating cost is higher.
Summary of the invention
The objective of the invention is to: low and telescopic pipe can not be locked onto the shortcoming of arbitrary position at present dust collector expansion pipe strength, provide a kind of compact structure, the locking device for metal expansion pipe of the big and telescopic pipe locked position non-blind spot novel of strength.
The object of the present invention is achieved like this: a kind of locking device for metal expansion pipe, include metal inner pipe and metal outer pipe, be equipped with in the metal outer pipe by the fixing lining of nut, on metal outer pipe and the lining locking device is installed, described metal inner pipe upper surface is provided with groove, the groove dual-side is that symmetry is evenly equipped with several projections, respective slot position, lining two ends is provided with positioning block and embeds in the groove, lining upper surface respective slot position is provided with the hole, slide block is installed in the hole, be provided with slug in the hole, the slug upper end is provided with and the corresponding bayonet socket of projection shape, the side that slide block is relative with positioning block is equipped with counterbore, be provided with spring between the relative counterbore, described slug dual-side upper end is provided with the guide surface parallel with the hypotenuse of adjacent two projections, and slug is provided with guide surface by slide block side lower end, the corresponding push button attachment hole that is provided with the metal outer pipe upper surface of slide block upper surface is equipped with push button in the push button attachment hole.
Described projection is a ladder type wide at the top and narrow at the bottom, and the spacing between projection and the projection is a slug length.
Described slide block rear end is the arrow type, and the slide block both sides are provided with guide rail, and following corresponding guide rail position is provided with baffle plate on the lining.
The invention has the advantages that: the metal inner pipe upper surface is provided with groove, the groove dual-side is evenly equipped with several ladder type projections wide at the top and narrow at the bottom for symmetry, the slug upper end is provided with and the corresponding bayonet socket of projection shape, slug dual-side upper end is provided with the guide surface parallel with the hypotenuse of adjacent two projections, when promptly promoting the push button holddown spring, slug falls, thereby adjust the telescopic pipe collapsing length, because the spacing between projection and the projection is a slug length, when unclamping the push button spring reset, slug can block projection, also can projection and projection between be stuck, reaching the telescopic pipe collapsing length does not have the purpose of blind spot, can afford big active force, prevent the telescopic pipe slippage, simple in structure, easy accessibility reduces cost.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structural representation of metal outer pipe of the present invention and metal inner pipe;
Fig. 3 is the structural representation of a kind of lock state of the present invention;
Fig. 4 is the structural representation of the another kind of lock state of the present invention;
Fig. 5 is the structural representation of the flexible state of the present invention;
Fig. 6 is the A-A sectional view of Fig. 3;
Fig. 7 is the B-B sectional view of Fig. 3;
Fig. 8 is the structural representation of slug of the present invention;
Fig. 9 is the structural representation of slide block of the present invention;
Figure 10 is the left view of slide block of the present invention.
Among the figure: 1, metal outer pipe; 2, metal inner pipe; 3, lining; 4, locking device; 5, groove; 6, projection; 7, positioning block; 8, hole; 9, slide block; 10, slug; 11, bayonet socket; 12, counterbore; 13, spring; 14, push button attachment hole; 15, push button; 16, guide surface; 17, guide surface; 18 guide rails; 19 baffle plates.
Embodiment
Accompanying drawing is non-limiting to disclose a specific embodiment of the present invention, and the invention will be further described below in conjunction with accompanying drawing.
By Fig. 1 to Figure 10 as seen, locking device for metal expansion pipe, include metal outer pipe 1 and metal inner pipe 2, be equipped with in the metal outer pipe 1 by the fixing lining 3 of nut, metal inner pipe 2 upper surfaces are provided with groove 5, groove 5 dual-sides are evenly equipped with several ladder type projections 6 wide at the top and narrow at the bottom for symmetry, lining 3 two ends respective slot 5 positions are provided with positioning block 7 and embed in the groove 5, lining 3 upper surface respective slot 5 positions are provided with hole 8, arrow formula slide block 9 is installed in the hole 8, both sides, arrow formula slide block 9 rear end are provided with guide rail 18, following corresponding guide rail 18 positions are provided with baffle plate 19 on lining 3 holes 8, slug 10 is installed in the hole 8, slug 10 upper ends are provided with and projection 6 corresponding bayonet sockets 11, spacing between projection 6 and the projection 6 is slug 10 length, slug 10 dual-sides upper end is provided with the guide surface parallel with the hypotenuse of adjacent two projections 6 16, slug 10 is provided with guide surface 17 by slide block 9 side lower ends, slide block 9 and positioning block 7 relative sides are equipped with counterbore 12, be provided with spring 13 between the counterbore 12, the corresponding push button attachment hole 14 that is provided with metal outer pipe 1 upper surface of slide block 9 upper surfaces is equipped with push button 15 in the push button attachment hole 14.
Lock mode one: promote push button 15 and drive 9 pressure springs 13 that slide, slide block 9 moves forward to and withdraws from slug 10 fully, because slug 10 dual-sides upper end is provided with the guide surface parallel with the hypotenuse of adjacent two projections 6 16, make slug 10 landings in the groove 5 of metal inner pipe 2, it is the collapsing length of adjustable telescopic pipe, unclamp push button 15, spring 13 resets and promotes slide block 9, baffle plate 19 withstands slide block 9, the bayonet socket 11 that slides to slug 10 on the arrow formula slide block 9 promotion sluies 10 blocks projection 6, the telescopic pipe locking.
Lock mode two: promote push button 15 and drive 9 pressure springs 13 that slide, slide block 9 moves forward to and withdraws from slug 10 fully, because slug 10 dual-sides upper end is provided with the guide surface parallel with the hypotenuse of adjacent two projections 6 16, make slug 10 landings in the groove 5 of metal inner pipe 2, it is the collapsing length of adjustable telescopic pipe, because the spacing between projection 6 and the projection 6 is slug 10 length, unclamp push button 15, spring 13 resets and promotes slide block 9, baffle plate 19 withstands slide block 9, arrow formula slide block 9 promotes to slide to slug 10 on the slug 10 and is parked between projection 6 and the projection 6, the telescopic pipe locking.
As mentioned above, locking device for metal expansion pipe of the present invention reaches the purpose that locked position does not have blind spot.
This locking device for metal expansion pipe removes and can be applicable on the dust collector expansion pipe, also can be applicable on the telescopic pipe such as mowing machine.
Claims (3)
1. locking device for metal expansion pipe, include metal outer pipe and metal inner pipe, be equipped with in the metal outer pipe by the fixing lining of nut, on metal outer pipe and the lining locking device is installed, it is characterized in that: described metal inner pipe upper surface is provided with groove, the groove dual-side is that symmetry is evenly equipped with several projections, respective slot position, lining two ends is provided with positioning block and embeds in the groove, lining upper surface respective slot position is provided with the hole, slide block is installed in the hole, be provided with slug in the hole, the slug upper end is provided with and the corresponding bayonet socket of projection shape, the side that slide block is relative with positioning block is equipped with counterbore, be provided with spring between the relative counterbore, described slug dual-side upper end is provided with the guide surface parallel with the hypotenuse of adjacent two projections, and slug is provided with guide surface by slide block side lower end, the corresponding push button attachment hole that is provided with the metal outer pipe upper surface of slide block upper surface is equipped with push button in the push button attachment hole.
2. locking device for metal expansion pipe according to claim 1 is characterized in that: described projection is a ladder type wide at the top and narrow at the bottom, and the spacing between projection and the projection is the length of slug.
3. locking device for metal expansion pipe according to claim 1 is characterized in that: described slide block rear end is the arrow type, and the slide block both sides are provided with guide rail, and following corresponding guide rail position is provided with baffle plate on the lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100193127A CN100487296C (en) | 2007-01-15 | 2007-01-15 | Locking device for metal expansion pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100193127A CN100487296C (en) | 2007-01-15 | 2007-01-15 | Locking device for metal expansion pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101004234A CN101004234A (en) | 2007-07-25 |
| CN100487296C true CN100487296C (en) | 2009-05-13 |
Family
ID=38703558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100193127A Expired - Fee Related CN100487296C (en) | 2007-01-15 | 2007-01-15 | Locking device for metal expansion pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100487296C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012216884A1 (en) | 2012-09-20 | 2014-03-20 | Robert Bosch Gmbh | Absauganschlusssystem |
| CN107521657B (en) * | 2016-06-22 | 2021-06-29 | 北京臻迪机器人有限公司 | Locking mechanism of aircraft horn |
-
2007
- 2007-01-15 CN CNB2007100193127A patent/CN100487296C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101004234A (en) | 2007-07-25 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20100222 |