CN209838255U - Ladder with adjustable height - Google Patents
Ladder with adjustable height Download PDFInfo
- Publication number
- CN209838255U CN209838255U CN201822057449.8U CN201822057449U CN209838255U CN 209838255 U CN209838255 U CN 209838255U CN 201822057449 U CN201822057449 U CN 201822057449U CN 209838255 U CN209838255 U CN 209838255U
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- ladder
- leg
- positioning
- piece
- rotating piece
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Abstract
The ladder comprises a first ladder leg and a second ladder leg, wherein the first ladder leg is rotationally connected with the second ladder leg, and the ladder further comprises a rotational positioning mechanism which rotationally connects the first ladder leg with the second ladder leg, the rotational positioning mechanism comprises a first rotating part, a second rotating part and a bolt part, one end of the first rotating part is rotationally connected with one end of the second rotating part, the other end of the first rotating part is fixedly connected with the first ladder leg, and the other end of the second rotating part is fixedly connected with the second ladder leg; one end of the second rotating piece is provided with an arc part, and the arc part is provided with a groove for the insertion of the bolt piece; the bolt piece is limited by the first ladder leg and/or the first rotating piece to move, and when the bolt piece is embedded into the groove, the first rotating piece and the second rotating piece are locked.
Description
Technical Field
The utility model relates to a ladder belongs to household articles technical field.
Background
Ladders are common tools used in everyday operations. Current ladder includes two sets of ladder legs usually, is the herringbone for the people's word ladder when two sets of ladder legs are the chevron shape, is a word ladder when two sets of ladder leg levels align, and this ladder expects when using to freely rotate the coincide when needs are folding, expects that the locking is stable when using, then current locking mechanical system has the structure complicacy, operates inconvenient scheduling problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design is reasonable, the stable ladder of locking.
The utility model provides a technical scheme that above-mentioned problem adopted is: the ladder comprises a first ladder leg and a second ladder leg, wherein the first ladder leg is rotationally connected with the second ladder leg, and the ladder further comprises a rotational positioning mechanism which rotationally connects the first ladder leg with the second ladder leg, the rotational positioning mechanism comprises a first rotating part, a second rotating part and a bolt part, one end of the first rotating part is rotationally connected with one end of the second rotating part, the other end of the first rotating part is fixedly connected with the first ladder leg, and the other end of the second rotating part is fixedly connected with the second ladder leg; one end of the second rotating piece is provided with an arc part, and the arc part is provided with a groove for the insertion of the bolt piece; the bolt piece is limited by the first ladder leg and/or the first rotating piece to move, and when the bolt piece is embedded into the groove, the first rotating piece and the second rotating piece are locked.
Wherein, the latch also comprises an elastic element which applies the acting force of the latch element tending to the circular arc part.
The pin piece is provided with a positioning pin, the first ladder leg or the first rotating piece is provided with a first positioning part and a second positioning part for positioning the pin piece, the first positioning part and the second positioning part have height difference in the vertical direction, and the positioning pin can switch positioning positions between the first positioning part and the second positioning part.
Wherein the first positioning portion and the second positioning portion are offset in a horizontal direction.
The first positioning part and the second positioning part are respectively L-shaped corners.
The groove comprises a first side edge and a second side edge, and the second side edge protrudes from the first side edge; in the unfolding process of the first ladder leg and the second ladder leg, the bolt piece passes over the first side edge and then is abutted against the second side edge.
The end of the plug pin piece, which is embedded into the groove, is an inclined surface, and the end of the inclined surface, which is abutted against the second side edge, is a high point.
The ladder comprises a first ladder leg and a second ladder leg, and is characterized by further comprising a handle, wherein the handle is fixedly connected with the plug pin piece, and extends towards the position between the first ladder leg and the second ladder leg and extends out of the first ladder leg.
The ladder comprises a first ladder leg and a second ladder leg, and is characterized by further comprising a pedal and a pin shaft for mounting the pedal, wherein the first ladder leg or the second ladder leg is provided with a mounting hole, the pin shaft penetrates through the mounting hole and is connected with the pedal, and the outer diameter of the pedal is larger than the pin shaft.
Wherein, a flanging is arranged at one end of the outer side of the pin shaft.
Compared with the prior art, the utility model, have following advantage and effect: the recess that is used for the locking in this application is a plurality of, and a plurality of recess can realize the fixed of a plurality of position, can realize multiple service function, and the operation is convenient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the rotational positioning mechanism of the present invention.
Fig. 3 is a schematic view of fig. 2 from another perspective.
Fig. 4 is a schematic structural diagram of the pedal and the pin of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Example 1
As shown in fig. 1 to 4, the ladder of the present embodiment includes a first ladder leg 1, a second ladder leg 2, the first ladder leg 1 and the second ladder leg 2 are rotatably connected, the present embodiment further includes two rotation positioning mechanisms for rotatably connecting the first ladder leg 1 and the second ladder leg 2, the two rotation positioning mechanisms are preferably provided at two sides of the first ladder leg 1 and the second ladder leg 2, respectively, the rotation positioning mechanism includes a first rotating member 3, a second rotating member 4 and a latch member 5, one end of the first rotating member 3 is rotatably connected to one end of the second rotating member 4, the other end of the first rotating member 3 is fixedly connected to the first ladder leg 1, and the other end of the second rotating member 4 is fixedly connected to the second ladder leg 2; one end of the second rotating piece 4 is provided with an arc part which is provided with a groove 40 for the insertion of the bolt piece 5; the bolt piece 5 is limited by the first ladder leg 1 and/or the first rotating piece 3. In this embodiment, one side of the latch member 5 abuts against the first rotating member 3, the other side of the latch member 5 abuts against the first ladder leg 1, and the latch member 5 is limited by the first ladder leg 1 and the first rotating member 3, so that when the latch member 5 is embedded into the groove 40, the first rotating member 3 and the second rotating member 4 are locked. In the embodiment, the connection mode that the bolt piece 5 is limited by the first ladder leg 1 is that two sides of the bolt piece 5 are limited by the first rotating piece 3 respectively. The circular arc portion is not limited to a standard circular arc, but refers to a relatively smooth circular arc surface, and the curvature of the circular arc surface can have a plurality of parameters. Preferably, the second rotation element 4 is provided with a number of recesses 40, so that a plurality of position fixes can be realized. The arrangement positions of the grooves 40 can be distributed according to requirements, preferably, one position of each groove 40 is that the ladder is used as a herringbone ladder, and the other position is that the ladder is used as a straight ladder.
The application also comprises an elastic element 6, said elastic element 6 exerting an action force on the latch element 5 tending towards the circular arc. The elastic element 6 is a spring which is pressed against the lower part of the bolt element 5, and the elastic element 6 applies acting force to the bolt element 5 tending to the circular arc part.
In this embodiment, the pin member 5 is fixedly provided with a positioning pin 51, the first ladder leg 1 or the first rotating member 3 is provided with a first positioning portion a and a second positioning portion B for positioning the pin member 5, the first positioning portion a and the second positioning portion B have a height difference in a vertical direction, and the positioning pin 51 can switch positioning positions between the first positioning portion a and the second positioning portion B. When the positioning pin 51 is positioned at the first positioning part a, the latch piece 5 is blocked by the first positioning part a for positioning; when positioning pin 51 is in second positioning portion B, latch member 5 is obstructed by second positioning portion B for positioning. In the operation of the present embodiment, when the positioning pin 51 is located at the first positioning portion a, the positioning pin 51 is inserted into the groove 40, and the first rotating member 3 and the second rotating member 4 are locked; when the positioning pin 51 is located at the second positioning portion B due to the vertical height difference between the first positioning portion a and the second positioning portion B, the positioning pin 51 is disengaged from the groove 40, and the first rotating member 3 and the second rotating member 4 can rotate.
In this embodiment, the first positioning portion a and the second positioning portion B are offset in the horizontal direction. The positioning pin 51 is displaced in both the horizontal direction and the vertical direction when shifted between the first positioning portion a and the second positioning portion B. When the first rotating member 3 and the second rotating member 4 need to rotate, the positioning pin 51 moves downwards against the resistance of the elastic member 6, then moves horizontally into the second positioning portion B, the user loosens the operation of the pin member 5, and the first rotating member 3 and the second rotating member 4 can still rotate.
In this embodiment, the first positioning portion a and the second positioning portion B are respectively L-shaped corners.
In this embodiment, the groove 40 includes a first side 401 and a second side 402, and the second side 402 protrudes from the first side 401; during the unfolding of the first ladder leg 1 and the second ladder leg 2, the latch member 5 passes over the first side 401 and abuts against the second side 402. In this structure, the bolt piece 5 can be separated from the limit insertion groove 40 of the second positioning portion B after being abutted by the second side edge 402, and the ladder is automatically locked when opened.
In this embodiment, one end of the latch member 5 inserted into the groove 40 is an inclined surface, and the inclined end of the inclined surface is a high point which is opposite to the second side 402. The high point contacts the second side 402 first, and the first side 401 corresponds to the low point end, in position.
In the embodiment, the ladder further comprises a handle 7, the handle 7 is fixedly connected with the latch member 5, and the handle 7 extends towards the space between the first ladder leg 1 and the second ladder leg 2 and extends out of the first ladder leg 1. The handle 7 is arranged on the inside and the outside without obstacles.
The ladder comprises a pedal 82 and a pin shaft 81 used for installing the pedal 82, wherein the first ladder leg 1 or the second ladder leg 2 is provided with an installation hole, the pin shaft 81 penetrates through the installation hole to be connected with the pedal 82, and the outer diameter of the pedal 82 is larger than the pin shaft 81. When the structure is installed, the pin shaft 81 penetrates through the first ladder leg 1 or the second ladder leg 2 from the outer side and is connected with the installation pedal 82, and the pedal 82 is limited horizontally because the outer diameter of the pedal 82 is larger than the pin shaft 81.
In this embodiment, a flange is provided at one end of the outer side of the pin 81. The arrangement of the flanging can prevent the pin shaft 81 from penetrating through the mounting hole and the pin from being disengaged.
The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The ladder is characterized by further comprising a rotary positioning mechanism which rotationally connects the first ladder leg and the second ladder leg, the rotary positioning mechanism comprises a first rotating piece, a second rotating piece and a bolt piece, one end of the first rotating piece is rotationally connected with one end of the second rotating piece, the other end of the first rotating piece is fixedly connected with the first ladder leg, and the other end of the second rotating piece is fixedly connected with the second ladder leg; one end of the second rotating piece is provided with an arc part, and the arc part is provided with a groove for the insertion of the bolt piece; the bolt piece is limited by the first ladder leg and/or the first rotating piece to move, and when the bolt piece is embedded into the groove, the first rotating piece and the second rotating piece are locked.
2. A ladder as set forth in claim 1 further including a resilient member which applies a force tending to the arcuate portion to the latch member.
3. A ladder as claimed in claim 1, characterized in that the latch member is provided with a positioning pin, the first leg or the first turning member is provided with a first positioning portion and a second positioning portion for positioning the latch member, the first and second positioning portions have a vertical height difference, and the positioning pin can switch the positioning position between the first and second positioning portions.
4. A ladder as set forth in claim 3 wherein said first and second positioning portions are offset horizontally.
5. A ladder as claimed in claim 3 or 4, characterised in that the first and second locating portions are each in the form of an L-shaped corner.
6. A ladder as claimed in claim 3 or claim 4, wherein said recess includes a first side and a second side, said second side projecting from said first side; in the unfolding process of the first ladder leg and the second ladder leg, the bolt piece passes over the first side edge and then is abutted against the second side edge.
7. A ladder as claimed in claim 6, characterized in that the end of the latching element engaging in the recess is bevelled and that the end of the bevel that is bevelled against the second side edge is a high point.
8. A ladder as claimed in claim 3 or 4, further comprising a handle fixedly connected to the latch member, the handle extending between the first leg and the second leg and extending beyond the first leg.
9. The ladder of claim 6, further comprising a pedal and a pin for mounting the pedal, wherein the first ladder leg or the second ladder leg is provided with a mounting hole, the pin penetrates through the mounting hole to be connected with the pedal, and the outer diameter of the pedal is larger than that of the pin.
10. A ladder as claimed in claim 9, wherein the pin is provided with a flange at one end thereof on the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822057449.8U CN209838255U (en) | 2018-12-07 | 2018-12-07 | Ladder with adjustable height |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822057449.8U CN209838255U (en) | 2018-12-07 | 2018-12-07 | Ladder with adjustable height |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209838255U true CN209838255U (en) | 2019-12-24 |
Family
ID=68889192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822057449.8U Active CN209838255U (en) | 2018-12-07 | 2018-12-07 | Ladder with adjustable height |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209838255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287640A (en) * | 2018-12-07 | 2020-06-16 | 江苏宙际杰智能科技股份有限公司 | Ladder with adjustable height |
-
2018
- 2018-12-07 CN CN201822057449.8U patent/CN209838255U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287640A (en) * | 2018-12-07 | 2020-06-16 | 江苏宙际杰智能科技股份有限公司 | Ladder with adjustable height |
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