CN201324205Y - Locking mechanism for metal extension tube - Google Patents
Locking mechanism for metal extension tube Download PDFInfo
- Publication number
- CN201324205Y CN201324205Y CNU2008201379689U CN200820137968U CN201324205Y CN 201324205 Y CN201324205 Y CN 201324205Y CN U2008201379689 U CNU2008201379689 U CN U2008201379689U CN 200820137968 U CN200820137968 U CN 200820137968U CN 201324205 Y CN201324205 Y CN 201324205Y
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- positioning
- lining
- outer tube
- locking mechanism
- projection
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- Expired - Lifetime
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Abstract
The utility model discloses a locking mechanism for a metal extension tube, which comprises an outer tube and an inner tube. A bushing is fixed at one end of the outer tube; a sliding handle which can carry out reciprocating movement along the axial direction of the outer tube is movably arranged on the bushing; a plurality of positioning notches distributed at equal intervals are formed on the upper surface of the inner tube; at least a through hole is formed on the bushing corresponding to the upper surface of the inner tube; a positioning roller which can partially fall into each positioning notch is arranged in the through hole; and a bulge for blocking the positioning roller from being separated from the positioning notch is arranged on the sliding handle. No block force exists between the sliding handle and the inner tube when the sliding handle is driven, therefore, the locking mechanism is labor-saving during the operation in comparison with the prior art; and meanwhile, since the inner tube is positioned against the positioning roller and the outer tube, the positioning roller and the inner tube roll correspondingly when the inner tube moves correspondingly to the outer tube, thereby resulting in less friction. Therefore, compared with the prior art, the abrasion of parts is hard to be caused and the reliable positioning of the outer tube in the locking mechanism is further ensured.
Description
Technical field
The utility model relates to a kind of metal expansion pipe locking mechanism.
Background technology
Usually all adopt metal expansion pipe as sweep-up pipe on the existing dust catcher, to connect scrubbing brush and dust catcher body; It is the conducting metal telescoping tube that the part metals telescoping tube is also arranged certainly, and this conducting metal telescoping tube is used on some dust catcher that has electronic scrubbing brush usually, and its inside is typically provided with conducting element and is electrically connected electronic scrubbing brush and dust catcher body.
Certainly which kind of metal expansion pipe no matter, its structure include outer tube, insert the interior pipe and the fixing locking mechanism of inner and outer pipes in the outer tube.When needs are regulated the length of telescoping tube, as long as unclamp locking mechanism, interior pipe on demand length from outer tube is extracted out or pushed, lock locking mechanism again and get final product.
Employed on the metal current telescoping tube mainly is the push-key type locking mechanism, this locking mechanism generally include live be located at push-and-pull key on the outer tube, be fixed on the slide block on the push-and-pull key and be located in slip locating slot on the pipe, its principle is to mate when chimeric interior pipe and outer tube location when semicircle slide block and slip locating slot; And when slide block broke away from the slip locating slot, interior pipe is outer tube movable telescopic relatively just.The advantage of this locking mechanism is, chimeric tight between slide block and slip locating slot, can guarantee the reliable location of inner and outer pipes, yet also bring deficiency simultaneously, be that the user often will be taken bigger strength and stirred the push-and-pull key, just can force slide block to break away from the slip locating slot so that freely stretch interior the pipe.And slide block and inner pipe wall between long-term squeeze mill mutually after, very easily cause wearing and tearing, finally can't be reliably chimeric with the slip locating slot, pipe slippage in causing.
Summary of the invention
The utility model purpose is: at the deficiency of mentioning in the background technology, and provide a kind of both rapid operations, locate reliable metal expansion pipe locking mechanism again.
The technical solution of the utility model is: a kind of metal expansion pipe locking mechanism comprises outer tube and interior pipe; Described outer tube one end is fixed with lining, live on the lining establish one can be along outer axial tube to reciprocating sliding handle; The pipe upper surface is provided with some positioning recess that are equally spaced in described, the upper surface of corresponding interior pipe is provided with at least one through hole on the lining, be provided with a positioning roller that can partly fall in the positioning recess in this through hole, and aforementioned sliding handle is provided with the projection that this positioning roller of block breaks away from positioning recess.
Sliding handle described in the utility model specifically is tubular, is buckled mutually by handle loam cake and handle lower cover to form, and is sheathed on the lining; The aforementioned projection of moulding on the inner surface of wherein said handle loam cake; Then be fixed with a slide block on the inner surface of described handle lower cover, this slide block is positioned at a chute that extends vertically that is arranged on the lining, and the both sides of slide block have spring respectively and between the two ends of chute.
Have at the enterprising one-step shaping of described handle loam cake in the utility model and be positioned at protruding both sides, and be provided with the surperficial relative retaining muscle of through hole with lining, distance between these retaining muscle and the interior pipe upper surface is more than or equal to the diameter of positioning roller, clearance height between these retaining muscle and the lining is less than the diameter of positioning roller simultaneously
The both sides of slide block described in the utility model further form the slide block projection, and the two ends of chute then all form the chute projection, and the two ends of aforementioned each spring are set in respectively on slide block projection and the chute projection.
The shape of positioning recess described in the utility model is preferred wide at the top and narrow at the bottom trapezoidal.
The concrete operation principle of the utility model metal expansion pipe locking mechanism is as follows: under locking state, be located at the location ball in the lining through hole owing to have in any certain positioning recess that partly falls on the interior pipe, and because positioning roller is blocked by the projection that the sliding handle inner surface is provided with, can't outwards deviate from positioning recess, therefore pipe in can be reliably stuck is managed relative outer tube activity in preventing.
As the user along outer axial tube to towards moving sliding handle one segment distance of any thruster, make that the utility model just was in releasing orientation when the projection of sliding handle inner surface was left block position to positioning roller.This moment, the user just can manage to outside extraction or in inwardly inserting along outer axial tube easily, and need not to worry that positioning roller causes obstruction with internal pipe, will easily expelling by the positioning recess on the interior pipe because lack the positioning roller of protruding block.
When the user extracts interior pipe out or inserts the length that needs, positioning roller will fall in another corresponding positioning recess, this moment, the user only need unclamp sliding handle, under the effect of spring restoring force, make sliding handle reset, projection comes back to the block position to positioning roller, has just finished locking of the present utility model.
Why preferred wide at the top and narrow at the bottom the shape of positioning recess described in the utility model trapezoidal be because the inclined-plane, both sides in this positioning recess can help the lifting positioning roller, is convenient to positioning roller is easily expelled positioning recess.
In the utility model why with the diameter more than or equal to positioning roller of the retaining muscle of protruding both sides and the distance design between the interior pipe upper surface, its objective is and offer the enough activity spaces of positioning roller, guarantee that it can be expelled positioning recess completely, and the activity that can internally not manage relative outer tube causes any obstruction.
Why again with the retaining muscle of protruding both sides and the diameter less than positioning roller of the design of the clearance height between the lining, its objective is that the feasible positioning roller that is expelled positioning recess can't further break away from the through hole on the lining and enter the gap that keeps off between muscle and the lining in while the utility model.Its final purpose is in order to guarantee that positioning roller can be reliably in through hole falls into next positioning recess, and is unlikely to skew, even dislocation, causes the utility model can't accurately lock inner and outer pipes.
Another purpose of the present utility model provides a kind of conducting metal telescoping tube that adopts above-mentioned metal expansion pipe locking mechanism, this conducting metal telescoping tube mainly is used on the dust catcher that has electronic scrubbing brush, and its inside is provided with conducting element and is electrically connected electronic scrubbing brush and dust catcher body.
The utility model advantage is:
This metal expansion pipe locking mechanism described in the utility model, the sliding handle on it does not have drag when promoting and between the interior pipe, so compared to existing technology, it is especially laborsaving to operate; Simultaneously because interior pipe relies on positioning roller and outer tube location, when the relative outer tube of interior pipe is movable, relative rolling between positioning roller and interior pipe, frictional force is less, therefore be difficult for causing the wearing and tearing of part compared to existing technology, further guaranteed the reliable of inner and outer pipes location in the utility model.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the structural representation of a kind of specific embodiment of the utility model;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the B-B profile of Fig. 2;
Fig. 4 is the STRUCTURE DECOMPOSITION schematic diagram of Fig. 1 embodiment;
Fig. 5 is the structural representation of the relative outer tube activity of interior pipe among Fig. 1 embodiment;
Fig. 6 is the C-C profile of Fig. 5;
Fig. 7 is the structural representation of conducting metal telescoping tube;
Fig. 8 is the D-D profile of Fig. 7;
Fig. 9 is for adopting the dust catcher complete machine schematic diagram of conducting metal telescoping tube shown in Figure 7.
Wherein: 1, outer tube; 2, interior pipe; 21, positioning recess; 3, lining; 31, chute; 311, chute projection; 4, sliding handle; 41, handle loam cake; 411, projection; 412, retaining muscle; 42, handle lower cover; 421, reference column; 5, positioning roller; 6, slide block; 61, slide block projection; 62, perforate; 7, spring; 8, interior flat tube; 9, electronic scrubbing brush electric connection; 10, scrubbing brush joystick electric connection; 11, electronic scrubbing brush; 12, scrubbing brush joystick; 13, dust collector hose; 14, flexible pipe lead; 15, dust catcher body; 16, scrubbing brush plug.
The specific embodiment
Embodiment: in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 with Figure 6 shows that a kind of specific embodiment of the utility model metal expansion pipe locking mechanism, it comprises outer tube 1 and interior pipe 2; One end of described outer tube 1 is fixed with lining 3, is arranged with a tubular sliding handle 4 on the lining 3, and this sliding handle 4 is buckled mutually by handle loam cake 41 and handle lower cover 42 and forms.
Be fixed with a slide block 6 on the inner surface of described handle lower cover 42, this slide block 6 is set on the reference column 421 that takes shape in handle lower cover 42 inner surfaces by the perforate on it 62 in the present embodiment.Described lining 3 is provided with a chute 31 that extends vertically, and described slide block 6 is positioned at this chute 31, and the both sides of slide block 6 respectively and have spring 7 between the two ends of chute 31.
The both sides of slide block described in the present embodiment 6 form slide block projection 61, the two ends of chute 31 then all form chute projection 311, the two ends of aforementioned each spring 7 are set in respectively on slide block projection 61 and the chute projection 311, its objective is to guarantee that spring 7 can deflection, can concentrate to force on the slide block 6.
Form on the described handle loam cake 41 and be positioned at each protruding 411 both sides, and be provided with the surperficial relative retaining muscle 412 of through hole with lining 3, distance L between these retaining muscle 412 and interior pipe 2 upper surfaces is more than or equal to the diameter of positioning roller 5, and the clearance height H between these retaining muscle 412 and the lining 3 is less than the diameter of positioning roller 5 simultaneously.
Specifically in conjunction with Fig. 1, Fig. 2 and Fig. 5, shown in Figure 6, the concrete operation principle of the described metal expansion pipe locking mechanism of present embodiment is described below:
At first as shown in Figure 1 and Figure 2, under locking state, be located at the location ball 5 in lining 3 through holes in the present embodiment owing to there is part to fall in the interior positioning recess 21 of managing on 2, and because positioning roller 5 is blocked by the projection 411 that sliding handle 4 inner surfaces are provided with, can't outwards deviate from positioning recess 21, therefore pipe 2 in can be reliably stuck is managed 2 relative outer tube 1 activities in preventing.
As Fig. 5, shown in Figure 6, when the user axially promotes sliding handle 4 one segment distances along outer tube 1 towards the left side, make when the projection 411 of sliding handle 4 inner surfaces is left block position to positioning roller 5, just present embodiment is in releasing orientation.This moment the user just can be easily axially outwards extract out along outer tube 1 in pipe 2, and need not to worry that positioning roller 5 will internally manage 2 and cause obstruction will easily expelling because lack the positioning roller 5 of protruding 411 blocks by the positioning recess 21 on the interior pipe 2.
When the user extracts interior pipe 2 out need length, positioning roller 5 in the present embodiment will fall into corresponding two positioning recess 21 interior (this state does not provide accompanying drawing) in addition, this moment, the user only need unclamp sliding handle 4, under the effect of spring 7 restoring forces, make sliding handle 4 reset, the locking to present embodiment has just been finished in the projection 411 block positions that come back to positioning roller 5.
Why preferred wide at the top and narrow at the bottom the shape of positioning recess described in the present embodiment 21 trapezoidal be because the inclined-planes, both sides in this positioning recess 21 can help lifting positioning roller 5, is convenient to positioning roller 5 is easily expelled positioning recess 21.
In the present embodiment why with the retaining muscle 412 of protruding 411 both sides and the diameter more than or equal to positioning roller 5 of the design of the distance L between interior pipe 2 upper surfaces, its objective is and offer the enough activity spaces of positioning roller 5, guarantee that it can be expelled positioning recess 21 completely, and the activity that can internally not manage 2 relative outer tubes 1 causes any obstruction.
Why again with the retaining muscle 412 of protruding 411 both sides and the diameter less than positioning roller 5 of the design of the clearance height H between the lining 3, its objective is that the feasible positioning roller 5 that is expelled positioning recess 21 can't further break away from the through hole on the lining 3 and enter the gap that keeps off between muscle 412 and the lining 3 in the while present embodiment.Its final purpose is in order to guarantee that positioning roller 5 can be reliably in through hole falls into next positioning recess, and is unlikely to skew, even dislocation, causes present embodiment can't accurately lock inner and outer pipes.
The described this metal expansion pipe locking mechanism of present embodiment, the sliding handle 4 on it does not have drag when promoting and between the interior pipe 2, so compared to existing technology, it is especially laborsaving to operate; Simultaneously because interior pipe 2 relies on positioning roller 5 and outer tube 1 location, when the relative outer tube of interior pipe 21 is movable, 2 relative rollings of positioning roller 5 and interior pipe, frictional force is less, therefore be difficult for causing the wearing and tearing of part compared to existing technology, further guaranteed the reliable of inner and outer pipes location.
In conjunction with Fig. 7, Fig. 8 and shown in Figure 9, for adopting a kind of conducting metal telescoping tube of the foregoing description metal expansion pipe locking mechanism, outer tube 1 two ends of this conducting metal telescoping tube are fixed electronic scrubbing brush electric connection 9 and scrubbing brush joystick electric connection 10 respectively, and outer tube 1 inside is inserted with interior pipe 2 interior flat tube 8 arranged side by side, is furnished with the conducting element that is communicated with electronic scrubbing brush electric connection 9 and scrubbing brush joystick electric connection 10 in the interior flat tube 8.
This conducting metal telescoping tube specifically is installed on as shown in Figure 9 the dust catcher that has electronic scrubbing brush 11, electronic scrubbing brush electric connection 9 connects electronic scrubbing brush 11,10 connection scrubbing brushes of scrubbing brush joystick electric connection joystick 12, and scrubbing brush joystick 12 inserts dust catcher bodies 15 by the scrubbing brush plug 16 of being located at flexible pipe lead 14 on the dust collector hose 13 and end thereof again.
Claims (5)
1. a metal expansion pipe locking mechanism comprises outer tube (1) and interior pipe (2); It is characterized in that described outer tube (1) one end is fixed with lining (3), the last work of lining (3) establishes one can be along the axial reciprocating sliding handle (4) of outer tube (1); Pipe (2) upper surface is provided with some positioning recess that are equally spaced (21) in described, the upper surface that lining (3) is gone up corresponding interior pipe (2) is provided with at least one through hole, be provided with a positioning roller (5) that can partly fall in the positioning recess (21) in this through hole, and aforementioned sliding handle (4) is provided with the projection (411) that this positioning roller of block (5) breaks away from positioning recess (21).
2. metal expansion pipe locking mechanism according to claim 1 is characterized in that described sliding handle (4) is tubular, is buckled mutually by handle loam cake (41) and handle lower cover (42) to form, and is sheathed on the lining (3); The aforementioned projection of moulding (411) on the inner surface of wherein said handle loam cake (41); Then be fixed with a slide block (6) on the inner surface of described handle lower cover (42), this slide block (6) is positioned at be arranged on the lining (3) one chute (31) that extends vertically, and the both sides of slide block (6) respectively and have spring (7) between the two ends of chute (31).
3. metal expansion pipe locking mechanism according to claim 2, it is characterized in that forming on the described handle loam cake (41) and be positioned at projection (411) both sides, and be provided with the surperficial relative retaining muscle (412) of through hole with lining (3), distance (L) between these retaining muscle (412) and interior pipe (2) upper surface is more than or equal to the diameter of positioning roller (5), and the clearance height (H) between these retaining muscle (412) and the lining (3) is less than the diameter of positioning roller (5) simultaneously.
4. metal expansion pipe locking mechanism according to claim 2, the both sides that it is characterized in that described slide block (6) form slide block projection (61), the two ends of chute (31) then all form chute projection (311), and the two ends of aforementioned each spring (7) are set in respectively on slide block projection (61) and the chute projection (311).
5. according to claim 1 or 2 or 3 or 4 described metal expansion pipe locking mechanisms, it is characterized in that described positioning recess (21) is wide at the top and narrow at the bottom trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201379689U CN201324205Y (en) | 2008-11-10 | 2008-11-10 | Locking mechanism for metal extension tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201379689U CN201324205Y (en) | 2008-11-10 | 2008-11-10 | Locking mechanism for metal extension tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201324205Y true CN201324205Y (en) | 2009-10-14 |
Family
ID=41176184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201379689U Expired - Lifetime CN201324205Y (en) | 2008-11-10 | 2008-11-10 | Locking mechanism for metal extension tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201324205Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2488292A (en) * | 2007-12-22 | 2012-08-22 | Dyson Technology Ltd | Wand and handle assembly for a cleaning appliance |
| US8327504B2 (en) | 2007-12-22 | 2012-12-11 | Dyson Technology Limited | Wand assembly for a cleaning appliance |
| CN105792993A (en) * | 2013-11-08 | 2016-07-20 | 胡斯华纳有限公司 | Coupling apparatus for telescoping tubes |
| CN106108782A (en) * | 2016-08-18 | 2016-11-16 | 苏州市春菊电器有限公司 | Locking device and include rotational structure and the vacuum cleaner of this locking device |
| CN106166726A (en) * | 2016-08-25 | 2016-11-30 | 无锡市东北塘永丰橡塑厂 | A kind of multi-functional rubber hammer |
| CN106798522A (en) * | 2017-03-02 | 2017-06-06 | 小狗电器互联网科技（北京）股份有限公司 | A kind of suction-pipe structure in dust catcher |
| CN110753604A (en) * | 2017-06-16 | 2020-02-04 | Gb项目公司 | Rod for operating a tool provided with means for adjusting the length of the rod |
-
2008
- 2008-11-10 CN CNU2008201379689U patent/CN201324205Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2488292A (en) * | 2007-12-22 | 2012-08-22 | Dyson Technology Ltd | Wand and handle assembly for a cleaning appliance |
| GB2488292B (en) * | 2007-12-22 | 2012-11-14 | Dyson Technology Ltd | Wand assembley for a cleaning appliance |
| US8327504B2 (en) | 2007-12-22 | 2012-12-11 | Dyson Technology Limited | Wand assembly for a cleaning appliance |
| CN105792993A (en) * | 2013-11-08 | 2016-07-20 | 胡斯华纳有限公司 | Coupling apparatus for telescoping tubes |
| CN105792993B (en) * | 2013-11-08 | 2017-06-16 | 胡斯华纳有限公司 | For the coupling device of collapsible tubes |
| CN106108782A (en) * | 2016-08-18 | 2016-11-16 | 苏州市春菊电器有限公司 | Locking device and include rotational structure and the vacuum cleaner of this locking device |
| CN106166726A (en) * | 2016-08-25 | 2016-11-30 | 无锡市东北塘永丰橡塑厂 | A kind of multi-functional rubber hammer |
| CN106798522A (en) * | 2017-03-02 | 2017-06-06 | 小狗电器互联网科技（北京）股份有限公司 | A kind of suction-pipe structure in dust catcher |
| CN106798522B (en) * | 2017-03-02 | 2022-07-19 | 小狗电器互联网科技（北京）股份有限公司 | Suction pipe structure in dust collector |
| CN110753604A (en) * | 2017-06-16 | 2020-02-04 | Gb项目公司 | Rod for operating a tool provided with means for adjusting the length of the rod |
| CN110753604B (en) * | 2017-06-16 | 2023-07-07 | Gb项目公司 | Rod for operating a tool, provided with means for adjusting the length of the rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: KINGCLEAN ELECTRIC CO., LTD. Free format text: FORMER NAME: KINGCLEAN ELECTRIC CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 215009 Xiangyang Road, New District, Jiangsu, Suzhou, No. 1 Patentee after: Lexy Electric Co., Ltd. Address before: 215009 Xiangyang Road, New District, Jiangsu, Suzhou, No. 1 Patentee before: Kingclean Floorcare Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20091014 |
|
| CX01 | Expiry of patent term |