CN109882067A - Telescopic sleeve and ladder telescopic leg - Google Patents
Telescopic sleeve and ladder telescopic leg Download PDFInfo
- Publication number
- CN109882067A CN109882067A CN201910192501.7A CN201910192501A CN109882067A CN 109882067 A CN109882067 A CN 109882067A CN 201910192501 A CN201910192501 A CN 201910192501A CN 109882067 A CN109882067 A CN 109882067A
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- locking
- inner tube
- hole
- ladder
- swing arm
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003534 oscillatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Ladders (AREA)
Abstract
The present invention discloses a kind of telescopic sleeve, and inner tube, outer tube and the locking releasing mechanism being set in said inner tube including being mutually socketed sliding, the locking releasing mechanism includes actuator, pedestal, axis, swing arm and locking pin；The pedestal is fixed on said inner tube, the middle part of the swing arm is articulated in the pedestal by the axis, the locking pin is in the slidably outside of setting and extended said inner tube, the outer tube is equipped with lock hole, the actuator is slidingly arranged at said inner tube and the driving swing arm is swung, the other end of the swing arm is set to drive the locking pin insertion or exit the lock hole, to realize the mutually locking or release the lock of said inner tube and outer tube.Telescopic sleeve of the invention can mutually slide expansion after release the lock or realize locking after sliding is shunk, and reduce the occupied space of casing, easy to operate, easy to use.In addition, facilitating storage and carrying, and ladder telescopic leg aesthetic in appearance invention additionally discloses a kind of saving space.
Description
Technical field
The present invention relates to a kind of ladder more particularly to a kind of telescopic sleeve and ladder telescopic legs.
Background technique
The foot of ladder of extension ladder is typically all fixation, and the width of terraced body and foot of ladder is equal, when shrinking, each section ladder of terraced body
Column is collapsible in one section cleat stanchion of the lowermost, to make extension ladder folding to minimum state, greatlys improve transport just
Benefit.But stability is all bad when in use for these extension ladders, reason is that the width of its foot of ladder is smaller, and support range is small.
If only the foot of ladder of existing extension ladder is lengthened, increase support range, although the stability of its support can be improved,
Be, due to foot of ladder be it is fixed cannot folding, this will lead to extension ladder foot of ladder the space occupied mistake after folding again
Greatly, it is unfavorable for transporting and stores.In addition, though can be unfolded now with some foot of ladders or the extension ladder of folding, but these are stretched
Contracting, structure is complicated and exposed for terraced foot of ladder, so that inconvenient and shape is unsightly.
Summary of the invention
The purpose of the present invention is to provide a kind of telescopic sleeves, locking releasing mechanism are arranged in inside, so that the energy after release the lock
Mutually sliding is unfolded or realizes locking after sliding is shunk, and reduces the occupied space of casing, easy to operate, easy to use.
Another object of the present invention is to provide a kind of ladder telescopic leg, heel brace can stretch out supporting ladder when in use
Son makes ladder more steady, or shrinks when not in use, to save space, facilitates storage and carrying, and aesthetic in appearance.
To achieve the goals above, telescopic sleeve of the invention includes the mutual inner tube for being socketed sliding, outer tube and is set to
Locking releasing mechanism in said inner tube, the locking releasing mechanism include actuator, pedestal, axis, swing arm and locking pin；The pedestal is solid
The pedestal is articulated in by the axis due to the middle part of said inner tube, the swing arm, the locking pin is in slidably to be arranged
And the outside of extended said inner tube, the outer tube are equipped with lock hole, the actuator is slidingly arranged at said inner tube and drive
It moves the swing arm to swing, so that the other end of the swing arm is driven the locking pin insertion or is exited the lock hole, to realize
State the mutually locking or release the lock of inner tube and outer tube.
Compared with prior art, by sliding said inner tube and the outer tube mutually, recycle axis by the swing arm
It is set to the pedestal, locking pin is slidingly arranged at the outer of said inner tube and extended said inner tube, and utilize a driving
Part drives the swing arm, to make the swing arm swing and the locking pin is driven to be inserted into the lock hole of the outer tube, in turn
The relative position for locking said inner tube and the outer tube, so that said inner tube and the outer tube be made to reach lock after expansion or contraction
Fixed purpose；Occupied space can be reduced after said inner tube and external tube shrank locking, and when use only needs to drive the drive
Moving part movement, it is easy to operate, it is easy to use；In addition, can be kept away by the way that the locking releasing mechanism to be set in said inner tube
It is exposed to exempt from its, and then makes whole more attractive.
Preferably, the locking releasing mechanism further includes drive rod, one end of the drive rod connects the actuator, the other end
It extends to outside the outer tube.Since the actuator is located in said inner tube, the drive rod is set, the driving is made
Bar extends to the outer tube, so as to improve ease of use convenient for users to operation.
Specifically, the locking releasing mechanism further includes operation button, and the operation button is connected to the another of the actuator
End, slide actuator described in the drive rod pushing tow by pressing.
Preferably, the locking releasing mechanism further includes the first elastic component, first elastic component, which provides one, makes the locking pin
It is inserted into the elastic force of the lock hole.First elastic component can make the locking pin be automatically inserted into the lock hole, in turn
Said inner tube and the outer tube is set to realize automatic locking.
Specifically, first elastic component is torsional spring, and the torsional spring is placed on the axis and supports with the swing arm.
Preferably, the outer tube wall is equipped with the fixed link extended along said inner tube glide direction, the lock hole is opened up
In in the fixed link.The fixed link is set, and the lock hole is set in the fixed link, it can be to avoid the locking
Hole is opened in outside the outer tube, improves its aesthetics.
Preferably, the outside of said inner tube is equipped with sliding slot, the inner wall of the outer tube is equipped with sliding block, and the sliding block is slidably set
It is placed on the sliding slot.The cooperation of the sliding slot and the sliding block can make said inner tube sliding more stable, accurate.
Preferably, the central axis of the locking pin is vertical with the axis.
Specifically, the locking releasing mechanism further includes connecting shaft, and the connecting shaft and the locking pin connection, the pedestal are opened
Equipped with the elongated hole extended along the locking pin glide direction, the other end of the swing arm offers the relatively described elongated hole inclination
Driving inclined hole, the connecting shaft connecting shaft parallel and described with the axis is slidably arranged in the driving inclined hole and described
In elongated hole.By the way that the connecting shaft and driving inclined hole is arranged, the oscillatory forces of the swing arm can be made to be converted into the driving lock
The axial thrust that rationed marketing is slided to the lock hole realizes locking of the locking pin to said inner tube and outer tube.
A kind of ladder telescopic leg, including heel brace and the telescopic sleeve, the heel brace are connected to the outer end of said inner tube.
Preferably, the heel brace has mounting base, the mounting base is installed in the outer end of said inner tube.
Specifically, the ladder telescopic leg further includes foot pad and strut, is in vertically to be equipped with adjustment hole, institute on the heel brace
It states strut to be slidably adjustably set in the adjustment hole, and lower end is connect with the foot pad.
Specifically, the ladder telescopic leg further includes locking mechanism, and the locking mechanism engages with the strut, with locking
The foot pad.
Specifically, the locking mechanism includes locking piece, drive shaft and operating parts, and the side of the mounting base is equipped with connection
The through-hole of the adjustment hole, the drive shaft is articulated in the mounting base and is pivotally connected axis and the central axis of the adjustment hole hangs down
Directly, the both ends of the drive shaft are stretched out the outer tube and are connect with the operating parts, and the locking piece is fixed on the drive shaft, institute
Stating drive shaft turns can drive locking piece to extend into the adjustment hole or exit the adjustment hole by the through-hole, with institute
State strut engaging or separation.
Specifically, the locking mechanism further includes the second elastic component, and second elasticity, which provides one, moves back the locking piece
The elastic force of the adjustment hole out.By the way that second elastic component is arranged, can make the locking piece automatically with the strut
Engaging, achievees the purpose that self-locking.
Specifically, second elastic component is torsional spring, and one end of the torsional spring is supported with the locking piece, the torsional spring
The other end is supported with the mounting base.
Specifically, the locking piece is equipped with engaging tooth, and the outside of the strut is equipped with and the line for engaging tooth engagement
Road.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of extension ladder of the present invention.
Fig. 2 is the exploded view of the ladder telescopic leg of extension ladder of the present invention.
Fig. 3 is the cross sectional plan view of the internal structure of the ladder telescopic leg of extension ladder of the present invention.
Fig. 4 is the sectional structure chart of foot pad and locking mechanism in Fig. 3.
Fig. 5 is the cross sectional side view of the ladder telescopic leg of extension ladder of the present invention.
Fig. 6 is the enlarged drawing of part A in Fig. 5.
Fig. 7 is the sectional structure chart of locking releasing mechanism in Fig. 3.
Fig. 8 is the enlarged drawing of part B in Fig. 5.
Fig. 9 is state diagram when the sub- telescopic leg of extension ladder of the present invention is stretched out.
Specific embodiment
For the technology contents that the present invention will be described in detail, construction feature, the effect realized, below in conjunction with embodiment and match
Attached drawing is closed to be explained in detail.
As shown in Figure 1 and Figure 2, the present invention discloses a kind of extension ladder 100 comprising telescopic ladder body 101 and two is set relatively
The ladder telescopic leg 102 set, the ladder telescopic leg 102 include heel brace 1 and telescopic sleeve 2, and the telescopic sleeve 2 includes inner tube
21 and outer tube 22, the cross section of said inner tube 21 is in I-shaped structure, and said inner tube 21 is socketed in the outer tube 22 and opposite
The outer tube 22 slideably stretches out or retraction, and the heel brace 1 has mounting base 11, and the mounting base 11 is installed on said inner tube
In 21 outer end, so that the heel brace 1 is fixed on the outer of said inner tube 21.
Again shown in Fig. 4 as shown in Figure 2, Figure 3 and Figure 4, the ladder telescopic leg 102 further includes foot pad 3, strut 4 and locking mechanism 5, institute
State on heel brace 1 in being vertically equipped with adjustment hole 1a, the central axis of the adjustment hole 1a in the glide direction of said inner tube 21,
The strut 4 is slidably adjustably set in the adjustment hole 1a, and lower end is connect with the foot pad 3 by bulb joint,
Allow the extension ladder inclined in use, the foot pad 3 cooperates with supporting surface completely.The locking mechanism 5 with it is described
Strut 4 engages, to lock the foot pad 3.
Referring again to Fig. 4, Fig. 5 and Fig. 6, specifically, the locking mechanism 5 includes locking piece 51, drive shaft 52, operating parts
53 and second elastic component 54.The side of the mounting base 11 is equipped with accommodating cavity 11a and is connected to the adjustment hole 1a and the accommodating
The through-hole of chamber 11a, the drive shaft 52 is articulated in the mounting base 11 and the central axis of drive-connecting shaft and the adjustment hole 1a hang down
Directly.The both ends of the drive shaft 52 are stretched out the outer tube 22 and are fixedly connected with the operating parts 53, and the operating parts 53 is foot-operated
Plate.The locking piece 51 is fixed on the drive shaft 52 and is placed in the accommodating cavity 11a.Second elasticity, which provides one, makes institute
The elastic force that locking piece 51 exits the adjustment hole 1a is stated, specifically, second elastic component 54 is torsional spring, the torsional spring socket
In in the drive shaft 52 and being built in the accommodating cavity 11a, one end of the torsional spring is supported with the locking piece 51, described
The other end of torsional spring is supported with the mounting base 11.By the way that second elastic component 54 is arranged, the locking piece 51 can be made certainly
Dynamic ground engages with the strut 4, achievees the purpose that self-locking.Under the elastic force driving of the torsional spring, the drive shaft 52 is positive to be turned
It is dynamic that locking piece 51 can be driven to extend into the adjustment hole 1a by the through-hole, to engage with the strut 4；Or described in operation
Operating parts 53 rotates backward the drive shaft 52 and the locking piece 51 is driven to exit the adjustment hole 1a, with the strut
4 separation.The locking piece 51 is equipped with engaging tooth 51a, and the outside of the strut 4 is equipped with lines 4a, and the strut 4 is locked
When, the engaging tooth 51a is engaged with the lines 4a.By the way that the locking mechanism 5, the locking piece 51 and the strut is arranged
4 can engage or be detached from, so as to so that the strut 4 can be fixed in the adjustment hole 1a any one height, reach
The purpose of adjusting, and need to only operate the operating parts 53 and can unlock, it is easy to use.
Fig. 2, Fig. 3, Fig. 7 and Fig. 8 are please referred to, the telescopic sleeve 2 further includes the release the lock machine being set in said inner tube 21
Structure 23, the locking releasing mechanism 23 include actuator 231, pedestal 232,233, four swing arms 234 of axis, two locking pins 235 and two
Connecting shaft 236；The pedestal 232 is fixed on said inner tube 21, and the swing arm 234 is in bending structure, the swing arm 234 presents,
Lower setting, the swing arm 234 of top two is symmetrical set, the swing arm 234 of lower section two is symmetrical set, positioned at the upper and lower of the same side
Two swing arms 234 are overlapped setting in corresponding, and one end positioned at upper and lower two swing arms 234 of the same side is connected by a pivot pin 237
It connects, the middle part of four swing arms 234 is articulated in the pedestal 232 by the axis 233, and the axis 233 is perpendicular to institute
State the glide direction of inner tube 21.The locking pin 235 is located at same in the slidably outside of setting and extended said inner tube 21
The other end of upper and lower two swing arms 234 of side connects a connecting shaft 236, and the connecting shaft 236 connects a locking pin
235；The two sides of the outer tube 22 are equipped with lock hole 22a, are located at the same side and are equipped at least two lock hole 22a, two lock holes
22a is located at the both ends of the outer tube 22.The cross section of the actuator 231 matches with said inner tube 21, the driving
Part 231 is slidingly arranged at said inner tube 21 and can support with one end of the swing arm 234 to drive the swing arm 234 to swing,
The other end of the swing arm 234 can drive the locking pin 235 to be inserted into or exit the lock hole 22a, to realize said inner tube
21 with the mutually locking or release the lock of outer tube 22.Specifically, the central axis of the locking pin 235 is vertical with the axis 233.It is described
The middle part of connecting shaft 236 is connect with the locking pin 235, and the pedestal 232 is offered to be prolonged along 235 glide direction of locking pin
The elongated hole 232a stretched, the other end of the swing arm 234 offer the inclined driving inclined hole 234a of the relatively described elongated hole 232a,
The upper/lower terminal of the connecting shaft 236 connecting shaft 236 parallel and described with the axis 233 is slidably arranged in above and below respectively
In the two elongated hole 232a of 232 upper and lower of the driving inclined hole 234a and the pedestal of two swing arms 234.Pass through setting
The connecting shaft 236 and driving inclined hole 234a, can make the oscillatory forces of the swing arm 234 be converted into the driving locking pin 235
The axial thrust slided to the lock hole 22a realizes that locking pin 235 locks said inner tube 21 and outer tube 22.
Again as shown in Figures 2 and 4, the locking releasing mechanism 23 further includes drive rod 238, U-shaped part 239 and operation button 240,
One end of the drive rod 238 connects the actuator 231, and the other end is connect with the U-shaped part 239, and the U-shaped part 239 wraps
It encloses in outside the mounting base 11, the operation button 240 is connect with the U-shaped part 239, and the operation button 240 is set to institute
The side of heel brace 1 is stated, slide actuator 231 described in 238 pushing tow of drive rod by pressing.Due to the actuator
231 are located in said inner tube 21, therefore, the drive rod 238 are arranged, the operation button 240 is made to extend to the outer tube 22
Outside, so as to convenient for users to operation, raising ease of use.In addition, the two sides of the U-shaped part 239 are equipped with elongated keep away
Allow hole 239a, so that the drive shaft 52 passes through, the U-shaped part 239 can be driven to move operating the operation button 240 in this way
It when drive rod 238 described in dynamic and pushing tow, interfere the U-shaped part 239 will not with the drive shaft 52.
Again as shown in fig. 7, the locking releasing mechanism 23 further includes the first elastic component 241, first elastic component 241 provides one
The locking pin 235 is set to be inserted into the elastic force of the lock hole 22a.First elastic component 241 can make the locking pin 235
It is automatically inserted into the lock hole 22a, and then said inner tube 21 and the outer tube 22 is made to realize automatic locking.Specifically, described
One elastic component 241 is torsional spring, the torsional spring be placed on the axis 233 and with the pivot pin that connect upper and lower two swing arms 234
237 support.It is acted therefore it may only be necessary to which four swing arms 234 can be driven in a torsional spring.
In addition, again referring to Fig. 2, the I-shaped recess in the outside of said inner tube 21 forms sliding slot 21a, the outer tube
22 inner wall is equipped with sliding block 22b, and the sliding block 22b is slidingly arranged on the sliding slot 21a.The sliding slot 21a and the cunning
The cooperation of block 22b can be such that said inner tube 21 slides more stable, accurate.22 inner wall of outer tube is additionally provided with along said inner tube 21
The fixed link 22c that glide direction extends, the lock hole 22a are opened on the fixed link 22c, the fixed link 22c and institute
Sliding block 22b is stated to be fixedly connected.The fixed link 22c is set, and the lock hole 22a is set on the fixed link 22c, it can be with
It avoids the lock hole 22a from being opened in outside the outer tube 22, improves its aesthetics.
In summary and above-mentioned attached drawing and Fig. 9 are combined, the working principle of ladder telescopic leg 102 of the present invention is carried out below detailed
Thin description, as follows:
When needing to extend ladder telescopic leg 102, operation button 240 described in Manual press makes the operation button 240
The U-shaped part 239 is pushed, the U-shaped part 239 slides and pushes the drive rod 238, drives described in 238 pushing tow of drive rod
Moving part 231 is slided towards the direction of the swing arm 234, when the actuator 231 compresses one end of the swing arm 234, four
The swing arm 234 rotates around the axis 233 and compresses first elastic component 241, so that being located at upper and lower the two of the same side
A swing arm 234 swings and drives simultaneously the connecting shaft 236 of the side, and the connecting shaft 236 is in the driving inclined hole 234a and described
The direction of elongated hole 232a described in the collective effect lower edge of elongated hole 232a moves inward and the locking pin 235 is pushed inwardly to move
It is dynamic, so that the locking pin 235 is exited the lock hole 22a close to inner end of the outer tube 22.At this point, the outer tube 22 with it is described
Said inner tube 21 can be pulled out and discharge the operation button 240 by the mutual release the lock of inner tube 21.When said inner tube 21 is completely pulled out
When, the lock hole 22a close to outer end of outer tube 22 described in 235 face of locking pin, at this moment, in first elastic component
Under 241 elastic-restoring force effect, the swing arm 234 rotates and the connecting shaft 236 is driven to be displaced outwardly, thus described in driving
Locking pin 235 is inserted into the lock hole 22a, and at the same time, one end of the swing arm 234 is counter to push away the actuator 231, described
Actuator 231 drives the operation button 240 to reset by the drive rod 238 and the U-shaped part 239.At this moment, said inner tube
21 in stretch out states, and with 22 mutually locking of outer tube.When needing to shrink the ladder telescopic leg 102, only need
Operation button 240 described in Manual press are wanted, the locking releasing mechanism 23 unlocks said inner tube 21 and outer tube 22 again, then again by institute
The pushing tow into the outer tube 22 of inner tube 21 is stated, so that said inner tube 21 is completely disposed in the outer tube 22, the locking releasing mechanism 23
Folding finally can be completed to said inner tube 21 and outer tube 22 again automatic locking.
When needing using the foot pad 3, it is only necessary to operate the operating parts 53, the operating parts 53 is made to drive the drive
Moving axis 52 rotates and compresses second elastic component 54, and the drive shaft 52 drives the locking piece 51 to rotate, so that the lock
Determine 51 lower end of part and exit the adjustment hole 1a, at this moment, the strut 4 of connecting foot pad 3 can be inserted into the adjustment hole 1a
And the operating parts 53 is discharged after adjusting height, the locking piece 51 turns again under the reply masterpiece of second elastic component 54
It is dynamic, so that its lower end enters the adjustment hole 1a and engaging tooth 51a engages with the lines 4a on strut 4, and then described in locking
Strut 4.At this point, the foot pad 3 can be installed.
Compared with prior art, by the way that locking releasing mechanism 23 is arranged in said inner tube 21, and make said inner tube 21 and described
Outer tube 22 mutually slides, and recycles axis 233 that the swing arm 234 is set to the pedestal 232, slidably by locking pin 235
It is set to the outer of said inner tube 21 and extended said inner tube 21, and drives the swing arm 234 using an actuator 231, thus
It swings the swing arm 234 and the locking pin 235 is driven to be inserted into the lock hole 22a of the outer tube 22, and then described in locking
The relative position of inner tube 21 and the outer tube 22, so that said inner tube 21 and the outer tube 22 be made to reach lock after expansion or contraction
Fixed purpose；Said inner tube 21 and the outer tube 22, which are shunk, can reduce occupied space after locking, and when use only needs to drive institute
The movement of actuator 231 is stated, it is easy to operate, it is easy to use；In addition, by the way that the locking releasing mechanism 23 is set to said inner tube
It, can be exposed to avoid its in 21.Therefore, entire ladder telescopic leg 102 can stretch out support ladder when in use, keep ladder more steady
It is fixed, or shrink when not in use, to save space, facilitate storage and carrying, and aesthetic in appearance.
The above disclosure is only a preferred example of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore according to equivalent variations made by scope of the present invention patent, still falls within the range that the present invention is covered.
Claims (17)
1. a kind of telescopic sleeve, inner tube and outer tube including being mutually socketed sliding, it is characterised in that: further include being set in described
Locking releasing mechanism in pipe, the locking releasing mechanism include actuator, pedestal, axis, swing arm and locking pin；The pedestal is fixed on institute
Inner tube is stated, the middle part of the swing arm is articulated in the pedestal by the axis, and the locking pin is in slidably setting and can stretch
The outside of said inner tube out, the outer tube are equipped with lock hole, and the actuator is slidingly arranged at described in said inner tube and driving
Swing arm is swung, and so that the other end of the swing arm is driven the locking pin insertion or is exited the lock hole, to realize said inner tube
With the mutually locking or release the lock of outer tube.
2. telescopic sleeve as described in claim 1, it is characterised in that: the locking releasing mechanism further includes drive rod, the driving
One end of bar connects the actuator, and the other end extends to outside the outer tube.
3. telescopic sleeve as claimed in claim 2, it is characterised in that: the locking releasing mechanism further includes operation button, the behaviour
It is connected to the other end of the actuator, as button slide actuator described in the drive rod pushing tow by pressing.
4. telescopic sleeve as described in claim 1, it is characterised in that: the locking releasing mechanism further includes the first elastic component, described
First elastic component provides an elastic force for making the locking pin be inserted into the lock hole.
5. telescopic sleeve as claimed in claim 4, it is characterised in that: first elastic component is torsional spring, and the torsional spring is placed on
It is supported on the axis and with the swing arm.
6. telescopic sleeve as described in claim 1, it is characterised in that: the outer tube wall is equipped with along said inner tube glide direction
The fixed link of extension, the lock hole are opened in the fixed link.
7. telescopic sleeve as described in claim 1, it is characterised in that: the outside of said inner tube is equipped with sliding slot, the outer tube
Inner wall is equipped with sliding block, and the sliding block is slidingly arranged on the sliding slot.
8. telescopic sleeve as described in claim 1, it is characterised in that: the central axis of the locking pin is vertical with the axis.
9. telescopic sleeve as claimed in claim 8, it is characterised in that: the locking releasing mechanism further includes connecting shaft, the connection
Axis and the locking pin connection, the pedestal offer the elongated hole extended along the locking pin glide direction, the swing arm
The other end offers the inclined driving inclined hole of the relatively described elongated hole, the connecting shaft connecting shaft parallel and described with the axis
It is slidably arranged in the driving inclined hole and the elongated hole.
10. a kind of ladder telescopic leg, it is characterised in that: including heel brace and the described in any item telescopic sleeves of claim 1 to 9,
The heel brace is connected to the outer end of said inner tube.
11. ladder telescopic leg as claimed in claim 10, it is characterised in that: the heel brace has mounting base, the mounting base
It is installed in the outer end of said inner tube.
12. ladder telescopic leg as claimed in claim 11, it is characterised in that: the ladder telescopic leg further includes foot pad and branch
Bar, in adjustment hole is vertically equipped on the heel brace, the strut is slidably adjustably set in the adjustment hole, and lower end
It is connect with the foot pad.
13. ladder telescopic leg as claimed in claim 12, it is characterised in that: the ladder telescopic leg further includes locking mechanism,
The locking mechanism engages with the strut, to lock the foot pad.
14. ladder telescopic leg as claimed in claim 13, it is characterised in that: the locking mechanism includes locking piece, drive shaft
And operating parts, the side of the mounting base are equipped with the through-hole for being connected to the adjustment hole, the drive shaft is articulated in the mounting base
The outer tube and the operating parts are stretched out in central axis that is upper and being pivotally connected axis and the adjustment hole, the both ends of the drive shaft
Connection, the locking piece are fixed on the drive shaft, and the drive shaft turns can drive locking piece to extend by the through-hole
In the adjustment hole or the adjustment hole is exited, to engage or separate with the strut.
15. ladder telescopic leg as claimed in claim 14, it is characterised in that: the locking mechanism further includes the second elastic component,
Second elasticity provides an elastic force for making the locking piece exit the adjustment hole.
16. ladder telescopic leg as claimed in claim 15, it is characterised in that: second elastic component is torsional spring, the torsional spring
One end supported with the locking piece, the other end of the torsional spring is supported with the mounting base.
17. ladder telescopic leg as claimed in claim 14, it is characterised in that: the locking piece is equipped with engaging tooth, the branch
The outside of bar is equipped with and the lines for engaging tooth engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192501.7A CN109882067B (en) | 2019-03-13 | 2019-03-13 | Telescopic sleeve and ladder telescopic foot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192501.7A CN109882067B (en) | 2019-03-13 | 2019-03-13 | Telescopic sleeve and ladder telescopic foot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109882067A true CN109882067A (en) | 2019-06-14 |
| CN109882067B CN109882067B (en) | 2024-05-28 |
Family
ID=66932211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910192501.7A Active CN109882067B (en) | 2019-03-13 | 2019-03-13 | Telescopic sleeve and ladder telescopic foot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109882067B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112515409A (en) * | 2019-09-18 | 2021-03-19 | 明门瑞士股份有限公司 | Swing locking structure and shaking table |
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| CN209959163U (en) * | 2019-03-13 | 2020-01-17 | 东莞威信运动用品有限公司 | Telescopic sleeve and ladder telescopic foot |
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|---|---|---|---|---|
| AU2003268629B1 (en) * | 2003-12-12 | 2004-07-22 | Black Adda Pty Ltd | Support apparatus or accessory for a ladder |
| CN102341558A (en) * | 2009-03-03 | 2012-02-01 | 伟英企业有限公司 | Adjustable ladders and related methods |
| CN202360017U (en) * | 2011-11-14 | 2012-08-01 | 袁士风 | Underbed of extension ladder |
| JP2017036624A (en) * | 2015-08-12 | 2017-02-16 | 長谷川工業株式会社 | Extendable leg device |
| CN206016666U (en) * | 2016-08-02 | 2017-03-15 | 程飞 | A kind of telescopic foot of ladder |
| CN108825082A (en) * | 2018-08-18 | 2018-11-16 | 上海祈祿机械有限公司 | A kind of plug-type closed guard gate |
| CN209959163U (en) * | 2019-03-13 | 2020-01-17 | 东莞威信运动用品有限公司 | Telescopic sleeve and ladder telescopic foot |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112515409A (en) * | 2019-09-18 | 2021-03-19 | 明门瑞士股份有限公司 | Swing locking structure and shaking table |
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|---|---|
| CN109882067B (en) | 2024-05-28 |
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Address after: 523000 No. 8, 1st Road, Qiaotou third industrial zone, Houjie Town, Dongguan City, Guangdong Province Applicant after: Guangdong Qunwang Technology Co.,Ltd. Address before: 523000 Dongguan Weixin sporting goods Co., Ltd., Qiaotou third industrial zone, Houjie Town, Dongguan City, Guangdong Province Applicant before: DONGGUAN PRESTIGE SPORTING PRODUCTS Co.,Ltd. |
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