CN211422497U - Telescopic folding ladder - Google Patents
Telescopic folding ladder Download PDFInfo
- Publication number
- CN211422497U CN211422497U CN201921811219.4U CN201921811219U CN211422497U CN 211422497 U CN211422497 U CN 211422497U CN 201921811219 U CN201921811219 U CN 201921811219U CN 211422497 U CN211422497 U CN 211422497U
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- supporting leg
- pair
- folding ladder
- hinged
- horizontal
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Abstract
The utility model relates to a telescopic folding ladder, including the back supporting leg of top before the preceding supporting leg of a pair of slant back top and a pair of slant, the upper end of a pair of back supporting leg is articulated mutually with the upper end of a pair of preceding supporting leg respectively, is located and is provided with two piece at least horizontal footboards that parallel from the interval from bottom to top between a pair of preceding supporting leg, the preceding tip and the preceding supporting leg of horizontal footboard rotate to be connected, form parallelogram mechanism between the two horizontal footboards of upper and lower adjacent, are located to be provided with the support horizontal pole that is used for supporting the horizontal footboard rear portion of the top between a pair of back supporting leg, are located to be provided with the handrail that both sides portion respectively with preceding supporting leg sliding fit and scalable regulation between a. This flexible folding ladder compact structure, and the telescopic adjustment of handrail effectively practice thrift folding back space, reduce the occupation space in the collection dress cabinet, increase folding ladder's dress cabinet quantity.
Description
Technical Field
The utility model relates to a flexible folding ladder.
Background
The folding ladder is a civil engineering article and assists workers to fall down on the construction site, such as a movable stair. The folding ladder is opened when in use and folded after use, thereby being convenient for transfer. However, the existing folding ladder is provided with the handrail rod members so as to be used for holding when climbing the top of the folding ladder, and the handrail rod members cannot be folded, so that the length and the space are occupied in the process of carrying and loading the folding ladder, and the number of the components in the container is reduced.
Disclosure of Invention
An object of the utility model is to provide a telescopic folding ladder, the folding back space is effectively practiced thrift in this telescopic folding ladder's scalable regulation of handrail.
The technical scheme of the utility model lies in: the utility model provides a telescopic folding ladder, includes the back supporting leg of top before a pair of slant back top and a pair of slant, and the upper end of a pair of back supporting leg is articulated mutually with the upper end of a pair of preceding supporting leg respectively, is located and is provided with two piece at least horizontal footboards that parallel from the interval from bottom to top between a pair of preceding supporting leg, the preceding tip and the preceding supporting leg of horizontal footboard rotate to be connected, forms parallelogram mechanism between the two horizontal footboards of upper and lower adjacent, is located to be provided with the support horizontal pole that is used for supporting the horizontal footboard rear portion of the top between a pair of back supporting leg, is located to be provided with the handrail that both sides portion respectively with preceding supporting leg sliding fit and scalable regulation between a pair.
Furthermore, two sides of the rear part between two adjacent upper and lower transverse pedals are respectively provided with a connecting rod parallel to the front supporting leg, the lower end of the connecting rod is hinged with the rear part of the transverse pedal positioned on the lower side, the upper end of the connecting rod is hinged with the rear part of the transverse pedal positioned on the upper side or hinged with the middle part of the transverse pedal positioned on the uppermost side, and the lower part of the connecting rod is hinged with an inclined rod of which the other end is hinged with the rear supporting leg.
Furthermore, the lower side of the rear part of the transverse pedal positioned at the uppermost side is hinged with a lock catch hook plate which is buckled on the supporting cross rod and can be manually tripped through a pin shaft, and the pin shaft is sleeved with a torsion spring which has one end butted on the transverse pedal at the uppermost side and the other end butted on the lock catch hook plate to enable the lock catch hook plate to have lock catch force.
Further, the handrail includes the handrail pipe, the both ends of handrail pipe are fixed with respectively with preceding supporting leg sliding fit's grooved bar, the upper and lower part of preceding supporting leg is provided with the locking mechanical system who is used for grooved bar to lock under the extension or the contraction state respectively, the lower extreme of grooved bar is fixed with the sliding sleeve of cover on the preceding supporting leg, be provided with unlocking mechanism on the sliding sleeve.
Furthermore, the locking mechanism comprises positioning holes arranged at the upper part and the lower part of the front support leg, a V-shaped spring is arranged at the lower side of each positioning hole in the front support leg respectively, a convex button penetrating out of the positioning holes is arranged at one end of the V-shaped spring, and a locking hole matched with the convex button is arranged at the lower end part of the groove rod.
Further, release mechanism is including setting up the mounting groove on the sliding sleeve, be provided with one end rather than articulated button mutually in the mounting groove, the other end downside of button is provided with the projection that passes the sliding sleeve and make the convex button break away from the locking hole when being used for pressing the button, be provided with the reset spring of cover on the projection in the mounting groove.
Furthermore, the upper portion of preceding supporting leg still is fixed with the stopper, the lower extreme of sliding sleeve is provided with and cooperatees with the stopper and prevents the flange that the sliding sleeve slipped from the preceding supporting leg.
Further, the lower ends of the front supporting leg and the rear supporting leg are respectively provided with an anti-skid part.
Compared with the prior art, the utility model has the advantages of it is following: the telescopic folding ladder is compact in structure, the handrails can be telescopically adjusted, the folded space is effectively saved, the folding ladder is convenient to load into a cabinet, the occupied space in the cabinet is reduced, and the loading number of the folding ladder is increased; and the step board of this folding ladder is provided with the hasp, effectively improves this folding ladder's security.
Drawings
Fig. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
fig. 3 is a schematic view illustrating the extended state of the armrest of the present invention;
fig. 4 is a schematic view of the present invention in a folded state;
fig. 5 is a schematic view of the matching structure of the latch hook plate and the supporting cross bar of the present invention;
fig. 6 is a schematic structural view of the locking mechanism and the unlocking mechanism of the present invention;
fig. 7 is a schematic structural view of the sliding sleeve of the present invention;
fig. 8 is a sectional view of the sliding sleeve of the present invention;
fig. 9 is a schematic view of the sliding sleeve ascending limiting structure of the present invention;
in the figure: 10-front support leg 11-positioning hole 12-V-shaped spring 13-convex button 14-limiting block 20-rear support leg 21-support cross bar 30-transverse pedal 31-connecting rod 32-inclined rod 33-pin shaft 34-locking hook plate 35-torsion spring 40-armrest 41-armrest tube 42-grooved rod 421-locking hole 43-sliding sleeve 431-mounting groove 432-button 433-convex column 434-flange 44-return spring 50-antiskid part.
Detailed Description
In order to make the aforementioned features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.
Refer to fig. 1 to 9
The utility model provides a telescopic folding ladder, includes the back supporting leg 20 of top before a pair of slant back top's preceding supporting leg 10 and a pair of slant, and the upper end of a pair of back supporting leg is articulated mutually with the upper end of a pair of preceding supporting leg respectively, is located and is provided with two piece at least horizontal footboards 30 that parallel from the interval from bottom to top between a pair of preceding supporting leg, the preceding tip and the preceding supporting leg of horizontal footboard rotate to be connected, form parallelogram mechanism between the two adjacent horizontal footboards from top to bottom, are located to be provided with the support horizontal pole 21 that is used for supporting the horizontal footboard rear portion of the top between a pair of back supporting leg, are located to be provided with between a pair of preceding supporting leg both sides portion respectively with preceding supporting leg.
In this embodiment, in order to form a parallelogram mechanism between two adjacent transverse pedals, two sides of the rear portion between the two adjacent transverse pedals are respectively provided with a connecting rod 1 parallel to the front support leg, the lower end of the connecting rod is hinged with the rear portion of the transverse pedal located at the lower side, the upper end of the connecting rod is hinged with the rear portion of the transverse pedal located at the upper side or hinged with the middle portion of the transverse pedal located at the uppermost side, and the lower portion (approximately 1/3 position) of the connecting rod is hinged with a diagonal rod 32, the other end of which is hinged with the lower portion of the rear support leg. The stability of a parallelogram mechanism formed between two adjacent transverse pedals is improved through the inclined rod.
In this embodiment, in order to lock the top horizontal pedal, the rear lower side of the top horizontal pedal is hinged to a latch hook plate 34 fastened to the support rail and manually releasable through a pin 33, and the pin is sleeved with a torsion spring 35 having one end abutting against the top horizontal pedal and the other end abutting against the latch hook plate to enable the latch hook plate to have a latching force.
In this embodiment, in order to accomplish flexible regulation, the handrail includes handrail tube 41, handrail tube's both ends are fixed with respectively with preceding supporting leg sliding fit's notch pole 42, channel-section steel outside-in is detained on preceding supporting leg, the upper and lower part of preceding supporting leg is provided with the locking mechanical system who is used for the notch pole to extend or the locking under the contraction state respectively, the lower extreme of notch pole is fixed with the sliding sleeve 43 of cover on preceding supporting leg, be provided with unlocking mechanism on the sliding sleeve to accomplish the unblock of preceding supporting leg and notch pole through unlocking mechanism, so that accomplish the flexible of notch pole.
In this embodiment, the locking mechanism includes the locating hole 11 that sets up in the upper and lower part of preceding supporting leg, it is provided with V type spring 12 respectively to lie in each locating hole downside in the preceding supporting leg, the one end of V type spring is provided with the protruding button 13 of wearing out the locating hole, the lower tip of groove pole is provided with the locking hole 421 with protruding button matched with, stretches into the locking hole through the protruding button and accomplishes the locking of groove pole for the groove pole is unable flexible.
In this embodiment, in order to realize the unblock of grooved bar and preceding supporting leg, release mechanism is including setting up the mounting groove 431 on the sliding sleeve, be provided with one end rather than articulated button 432 in the mounting groove, the other end downside of button is provided with and is used for passing the sliding sleeve when pressing the button and makes the convex button break away from the projection 433 of locking hole, be provided with the reset spring 44 of cover on the projection in the mounting groove, can reset after making the button pressed through reset spring.
In this embodiment, in order to prevent the slot bar from slipping off from the front support leg, a stopper 14 is further fixed to the upper portion of the front support leg, and the stopper is provided on the lower side of the positioning hole located on the upper side. The lower end of the sliding sleeve is provided with a flange 434 which is matched with the limiting block to prevent the sliding sleeve from slipping off from the front supporting leg.
In this embodiment, in order to improve the frictional force between the front and rear support legs and the ground, the lower ends of the front and rear support legs are respectively provided with the anti-slip portions 50.
When the folding type pedal is used, the front supporting legs and the rear supporting legs are unfolded under the folding and contracting state, the rear ends of the transverse pedals at the uppermost side are supported on the supporting cross rods, and locking is completed through the locking hook plates. When the armrest is pulled upwards and is positioned at the highest point, the convex button of the V-shaped spring positioned at the upper part extends into the locking hole, so that the armrest is locked. When the button is pressed downwards, the convex button is separated from the locking hole, and the handrail can be retracted downwards.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (8)
1. The utility model provides a telescopic folding ladder, includes the back supporting leg of the preceding supporting leg of a pair of slant back top and a pair of slant front top, its characterized in that, the upper end of a pair of back supporting leg is articulated mutually with the upper end of a pair of preceding supporting leg respectively, is located and is provided with two piece at least horizontal footboards that parallel from the interval from bottom to top between a pair of preceding supporting leg, the preceding tip and the preceding supporting leg of horizontal footboard rotate to be connected, form parallelogram mechanism between the two adjacent horizontal footboards from top to bottom, are located to be provided with the supporting horizontal pole that is used for supporting the horizontal footboard rear portion of the top between a pair of back supporting leg, are located to be provided with the handrail that both sides portion respectively with preceding supporting leg sliding fit and.
2. The telescopic folding ladder according to claim 1, wherein two sides of the rear portion between two adjacent upper and lower lateral steps are respectively provided with a connecting rod parallel to the front support leg, the lower end of the connecting rod is hinged with the rear portion of the lateral step positioned at the lower side, the upper end of the connecting rod is hinged with the rear portion of the lateral step positioned at the upper side or hinged with the middle portion of the lateral step positioned at the uppermost side, and the lower portion of the connecting rod is hinged with a diagonal rod, the other end of which is hinged with the rear support leg.
3. The telescopic folding ladder as claimed in claim 1 or 2, wherein the rear lower side of the transverse pedal located at the uppermost side is hinged with a locking hook plate which is locked on the support cross bar and can be released manually through a pin shaft, and the pin shaft is sleeved with a torsion spring, one end of which is abutted against the transverse pedal at the uppermost side and the other end of which is abutted against the locking hook plate, so that the locking hook plate has locking force.
4. The telescopic folding ladder according to claim 1 or 2, wherein the handrail comprises a handrail tube, two ends of the handrail tube are respectively fixed with a grooved bar in sliding fit with the front support leg, the upper and lower parts of the front support leg are respectively provided with a locking mechanism for locking the grooved bar in an extended or contracted state, the lower end of the grooved bar is fixed with a sliding sleeve sleeved on the front support leg, and the sliding sleeve is provided with an unlocking mechanism.
5. The telescopic folding ladder of claim 4, wherein the locking mechanism comprises positioning holes disposed at the upper and lower parts of the front support leg, a V-shaped spring is disposed at the lower side of each positioning hole in the front support leg, a protruding button penetrating through the positioning holes is disposed at one end of the V-shaped spring, and a locking hole matched with the protruding button is disposed at the lower end part of the slot rod.
6. The telescopic folding ladder as claimed in claim 5, wherein the unlocking mechanism comprises a mounting groove disposed on the sliding sleeve, a button having one end hinged to the mounting groove is disposed in the mounting groove, a protruding post for passing through the sliding sleeve when the button is pressed to separate the protruding button from the locking hole is disposed at the lower side of the other end of the button, and a return spring sleeved on the protruding post is disposed in the mounting groove.
7. The telescopic folding ladder of claim 4, wherein a stopper is further fixed to the upper portion of the front support leg, and a flange cooperating with the stopper to prevent the sliding sleeve from slipping off the front support leg is provided to the lower end of the sliding sleeve.
8. The telescopic folding ladder of claim 1, 2, 5, 6 or 7, wherein the lower ends of the front and rear support legs are provided with a non-slip portion, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921811219.4U CN211422497U (en) | 2019-10-26 | 2019-10-26 | Telescopic folding ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921811219.4U CN211422497U (en) | 2019-10-26 | 2019-10-26 | Telescopic folding ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211422497U true CN211422497U (en) | 2020-09-04 |
Family
ID=72282656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921811219.4U Active CN211422497U (en) | 2019-10-26 | 2019-10-26 | Telescopic folding ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211422497U (en) |
-
2019
- 2019-10-26 CN CN201921811219.4U patent/CN211422497U/en active Active
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