CN210264482U - Self-locking double-layer folding ladder - Google Patents
Self-locking double-layer folding ladder Download PDFInfo
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- CN210264482U CN210264482U CN201920505558.3U CN201920505558U CN210264482U CN 210264482 U CN210264482 U CN 210264482U CN 201920505558 U CN201920505558 U CN 201920505558U CN 210264482 U CN210264482 U CN 210264482U
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Abstract
The utility model provides a from locking-type double-deck folding ladder, including two foot rest A, two foot rest B, two connecting rods, two footboards, spacing bar board and from the latch fitting, wherein, spacing bar board has bending deformation after the installation, and it warp right from the latch fitting produces the pulling force, and after the folding ladder expandes, when the position of setting for was reachd to the latch fitting, displacement under the pulling force effect, realization auto-lock limiting displacement lets the folding ladder after expanding expand state more stable, uses safelyr.
Description
Technical Field
The utility model relates to a from double-deck folding ladder of locking-type.
Background
The folding ladder has the advantages of small storage space and convenient use, and is often applied to the arrangement of lower containers in families or supermarkets. The folding ladder for the family is mostly single-layer or double-layer, and on the basis of meeting the requirements, the single-layer or double-layer folding ladder is smaller in size and better in stability. The two-layer folding ladder on the market is large in quantity, the supporting frame and the locking mechanism are often too simple and complex, the connection and assembly relation among parts is complex, the connection is unreliable, and certain danger exists during use.
Disclosure of Invention
The utility model provides a solve above-mentioned technical problem, provide a from double-deck folding ladder of locking-type, including two foot rest A, two foot rest B, two connecting rods, two footboards, spacing bar board and self-locking piece.
Two footboard parallel interval sets up, and the both sides of two footboard one ends all articulate there is same foot rest A, and the both sides that two footboards are close to middle part or the other end all articulate there is same root connecting rod, at this moment, foot rest A, connecting rod and two footboards are gone into four-bar linkage, through four-bar linkage's swing, realize folding receipts of folding ladder and open.
The upper ends of the two foot rests B are hinged with the upper end of the foot rest A through a hinge rod, and a hinge point is positioned on the outer side of the foot rest A, namely the hinge point is positioned on one side of the foot rest A away from the pedal; on the hinged rod, a spacer block is sleeved between the foot rest A and the foot rest B, and the foot rest A and the foot rest B are installed at intervals through the spacer block;
the foot rest B is a hollow pipe, and a strip-shaped hole is formed in the wall surface of one side, facing the foot rest A, of the foot rest B; from the restriction of latch fitting be in the bar is downthehole, and one end is followed the bar hole extend and with the one end of spacing bar is articulated, the other end of spacing bar with the middle part position that the one side of footboard was kept away from to the connecting rod is articulated, the middle part of spacing bar with the middle part of one side of footboard is kept away from to foot rest A is articulated, because foot rest A and foot rest B interval installation cause spacing bar produces deformation after the installation, has a little bending, and crooked spacing bar produces outside pulling force to the latch fitting.
When the four-bar linkage mechanism swings, the limiting strip-shaped plate is driven to swing, and the self-locking piece is further driven to slide in the strip-shaped hole; when the four-bar linkage mechanism swings to the state that the pedal is in the horizontal position, the bottoms of the two foot rests A and the two foot rests B form four supporting legs of the folding ladder, at the moment, the self-locking piece is positioned at the end of the upper end of the strip-shaped hole, a limiting hole is formed in the position of the end of the upper end, and the diameter of the limiting hole is larger than that of the strip-shaped hole; from the latch fitting is at least including the three sections that connect gradually, first section passes the bar hole extends out, and the diameter of second section is in between bar hole and the spacing hole, the diameter of third section is greater than spacing hole because crooked spacing bar board has outside pulling force to from the latch fitting, when the folding ladder expandes completely, is located from the latch fitting spacing hole position, under the pulling force drives, and second section card from the latch fitting is gone into spacing hole, at this moment, can't slide again in the bar hole from the latch fitting to realize self-locking function, when closing the folding ladder, only need press from the latch fitting, can resume the sliding function from the latch fitting.
Optionally, a hinged section used for hinging the limiting strip-shaped plate is further arranged outside the first section of the self-locking piece.
Optionally, the mounting hole has been seted up to the lower extreme end department in bar hole, the diameter of mounting hole is greater than the third section, and folding ladder expand and receive when closing, the slip stroke from the latch fitting is less than the distance of spacing hole and mounting hole, during the installation from the latch fitting, pass through earlier the latch fitting is put into from the latch fitting to the mounting hole, will be connected from the latch fitting and spacing bar board can.
Optionally, the supporting leg sleeves a foot pad, and the foot pad covers the mounting hole.
Optionally, the callus on the sole adopts rubber materials, because rubber materials's callus on the sole easily splits, the inside cladding of callus on the sole has the reinforcing steel sheet, the reinforcing steel sheet is located support foot bottom with between the callus on the sole.
Optionally, the reinforcing steel sheet comprises three sections which are connected in sequence, the first section is tightly attached to the foot rest A or the foot rest B and faces to one side of the foot rest B or the foot rest, the second section is tightly attached to the bottom of the supporting foot, and the third section is perpendicular to the second section and points to the ground.
Optionally, an anti-skid rubber pad is arranged on the pedal, and anti-skid grains are arranged on the anti-skid rubber pad.
It is right by the aforesaid the utility model discloses a description compares with prior art, the utility model discloses a from locking-type double-deck folding ladder, including two foot rest A, two foot rest B, two connecting rods, two footboards, spacing bar plate and from the latch fitting, wherein, spacing bar plate has bending deformation after the installation, and it is right that it warp from the latch fitting produces the pulling force, after folding ladder expandes, when the position of setting for is reachd from the latch fitting, displacement under the pulling force effect realizes auto-lock limiting displacement, lets folding ladder after the expansion expand state more stable, uses safelyr.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.
Wherein:
fig. 1 is a schematic structural view (side view) of a self-locking double-layer folding ladder of the present invention;
fig. 2 is a schematic structural view (front view) of a self-locking double-layer folding ladder of the present invention;
fig. 3 is a schematic structural view (axial side view) of a self-locking piece of the self-locking double-layer folding ladder of the present invention;
fig. 4 is a schematic structural view (cut-away view) of a foot pad of the self-locking double-layer folding ladder of the present invention;
the reference numerals of fig. 1-4 denote: 10-foot rest A, 20-foot rest B, 21-strip-shaped hole, 22-limiting hole, 23-mounting hole, 30-connecting rod, 40-pedal, 50-limiting strip-shaped plate, 60-self-locking piece, 61-first section, 62-second section, 63-third section, 64-hinged section, 70-foot rest and 71-reinforcing steel sheet.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention clearer and more obvious, the following description of the present invention with reference to the accompanying drawings and embodiments is provided for further details. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1 and 2, a self-locking double-deck folding ladder comprises two foot rests a10, two foot rests B20, two connecting rods 30, two pedals 40, a limiting strip-shaped plate 50 and a self-locking piece 60.
Two footboard 40 parallel interval sets up, and the both sides of two footboard 40 one ends all articulate there is same foot rest A10, and two footboard 40 are close to the both sides of middle part or the other end and all articulate there is same root connecting rod 30, at this moment, foot rest A10, connecting rod 30 and two footboard 40 go into four-bar linkage, and through four-bar linkage's swing, the receipts that realize folding ladder are closed and are expanded.
The upper ends of the two foot rests B20 are hinged with the upper end of the foot rest A10 through a hinge rod, and a hinge point is positioned on the outer side of the foot rest A10, namely the hinge point is positioned on one side of the foot rest A10 away from the pedal 40; on the hinged rod, a spacer block 70 is sleeved between the foot rest A10 and the foot rest B20, and the foot rest A10 and the foot rest B20 are installed at intervals through the spacer block 70.
Referring to fig. 1, the foot rest B20 is a hollow tube, and a strip-shaped hole 21 is formed in a wall surface of the foot rest B20 facing one side of the foot rest a 10; from locking piece 60 restriction is in the bar hole 21, and one end is followed bar hole 21 extends and with the one end of spacing bar plate 50 is articulated, spacing bar plate 50 the other end with the middle part position of one side of footboard 40 is kept away from to connecting rod 30 is articulated, spacing bar plate 50 the middle part with the middle part of one side of footboard 40 is kept away from to foot rest A10 is articulated, because foot rest A10 and foot rest B20 interval installation cause spacing bar plate 50 produces deformation after the installation, has a slight bending, as figure 2, crooked spacing bar plate 50 produces outside pulling force to self-locking piece 60.
When the four-bar linkage mechanism swings, the limiting strip-shaped plate 50 is driven to swing, and the self-locking piece 60 is driven to slide in the strip-shaped hole 21; when the four-bar linkage mechanism swings to the state that the pedal 40 is in the horizontal position, the bottoms of the two foot rests A10 and the two foot rests B20 form four supporting legs of the folding ladder, at the moment, the self-locking piece 60 is positioned at the end of the upper end of the strip-shaped hole 21, a limiting hole 22 is formed in the end of the upper end, and the diameter of the limiting hole 22 is larger than that of the strip-shaped hole 21; from locking piece 60 is at least including the three-section that connects gradually, and first section 61 passes bar hole 21 extends out, and the diameter of second section 62 is in between bar hole 21 and spacing hole 22, the diameter of third section 63 is greater than spacing hole 22, because crooked spacing bar plate 50 has outside pulling force to self-locking piece 60, when folding ladder is expanded completely, self-locking piece 60 is located spacing hole 22 position, under the pulling force drives, and self-locking piece 60's second section 62 card is gone into spacing hole 22, at this moment, self-locking piece 60 can't slide again in bar hole 21 to realize auto-lock function, when folding ladder, only need press self-locking piece 60, can resume self-locking piece 60's slip function.
Referring to fig. 3, the first section 61 of the self-locking member 60 is further provided with a hinge section 64 for hinging the position-limiting strip-shaped plate 50.
Referring to fig. 4, the foot pad 70 is sleeved on the supporting leg, and the mounting hole 23 is covered by the foot pad 70. Foot pad 70 adopts rubber materials, because rubber materials's foot pad 70 is easy to split, the inside cladding of foot pad 70 has reinforcing steel piece 71, reinforcing steel piece 71 is located supporting legs bottom with between the foot pad 70. The reinforcing steel sheet 71 comprises three sections which are connected in sequence, the first section is tightly attached to the foot stand A10 or the foot stand B20 and faces one side of the foot stand B20 or the foot stand, the second section is tightly attached to the bottom of the supporting foot, and the third section is perpendicular to the second section 62 and points to the ground.
It is right by the aforesaid the utility model discloses a description compares with prior art, the utility model discloses a from locking-type double-deck folding ladder, detain including foot rest A, foot rest B, footboard, synchronization piece and primary and secondary, through synchronization piece, can let the footboard expandes in step or receive and close, and synchronization piece is confined, can strengthen folding ladder's intensity and stability, but the primary and secondary is detained the split, and simple structure realizes the installation of closed synchronization piece, further improves folding ladder's an organic whole nature, stability and security.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (7)
1. A self-locking double-layer folding ladder is characterized by comprising two foot rests A, two foot rests B, two connecting rods, two pedals, a limiting strip-shaped plate and a self-locking piece,
the two pedals are arranged in parallel at intervals, two sides of one end of each pedal are hinged with the same foot rest A, two sides of each pedal, which are close to the middle part or the other end of each pedal, are hinged with the same connecting rod, and at the moment, the foot rest A, the connecting rod and the two pedals form a four-bar linkage;
the upper ends of the two foot rests B are hinged with the upper end of the foot rest A through a hinge rod, and a hinge point is positioned on the outer side of the foot rest A, namely the hinge point is positioned on one side of the foot rest A away from the pedal; on the hinged rod, a spacer block is sleeved between the foot rest A and the foot rest B, and the foot rest A and the foot rest B are installed at intervals through the spacer block;
the foot rest B is a hollow pipe, and a strip-shaped hole is formed in the wall surface of one side, facing the foot rest A, of the foot rest B; the self-locking piece is limited in the strip-shaped hole, one end of the self-locking piece extends out of the strip-shaped hole and is hinged with one end of the limiting strip-shaped plate, the other end of the limiting strip-shaped plate is hinged with the middle of one side, away from the pedal, of the connecting rod, and the middle of the limiting strip-shaped plate is hinged with the middle of one side, away from the pedal, of the foot stool A;
when the four-bar linkage mechanism swings, the limiting strip-shaped plate is driven to swing, and the self-locking piece is further driven to slide in the strip-shaped hole; when the four-bar linkage mechanism swings to the state that the pedal is in the horizontal position, the bottoms of the two foot rests A and the two foot rests B form four supporting legs of the folding ladder, at the moment, the self-locking piece is positioned at the end of the upper end of the strip-shaped hole, a limiting hole is formed in the position of the end of the upper end, and the diameter of the limiting hole is larger than that of the strip-shaped hole; the self-locking piece at least comprises three sections which are connected in sequence, the first section penetrates through the strip-shaped hole and extends out, the diameter of the second section is between the strip-shaped hole and the limiting hole, and the diameter of the third section is larger than the limiting hole.
2. The self-locking double-deck folding ladder as claimed in claim 1, wherein a hinge section for hinging the position-limiting strip-shaped plate is provided in addition to the first section of the self-locking member.
3. The self-locking double-layer folding ladder as claimed in claim 1, wherein the bottom end of the strip-shaped hole is provided with a mounting hole, the diameter of the mounting hole is larger than the third section, and when the folding ladder is unfolded and folded, the sliding stroke of the self-locking member is smaller than the distance between the limiting hole and the mounting hole.
4. The self-locking double-deck folding ladder as claimed in claim 3, wherein the supporting leg sleeves a foot pad covering the mounting hole.
5. The self-locking double-layer folding ladder as claimed in claim 4, wherein the foot pads are made of rubber materials, and the inside of the foot pads is wrapped with reinforcing steel sheets which are positioned between the bottoms of the supporting feet and the foot pads.
6. The self-locking double-layer folding ladder according to claim 5, characterized in that the reinforcing steel sheet comprises three sections connected in sequence, the first section is tightly attached to one side of the foot rest A or B facing the foot rest B or B, the second section is tightly attached to the bottom of the supporting foot, and the third section is perpendicular to the second section and faces the ground.
7. The self-locking double-layer folding ladder as claimed in claim 1, wherein the pedal is provided with an anti-slip rubber pad, and the anti-slip rubber pad is provided with anti-slip lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920505558.3U CN210264482U (en) | 2019-04-15 | 2019-04-15 | Self-locking double-layer folding ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920505558.3U CN210264482U (en) | 2019-04-15 | 2019-04-15 | Self-locking double-layer folding ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210264482U true CN210264482U (en) | 2020-04-07 |
Family
ID=70021973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920505558.3U Active CN210264482U (en) | 2019-04-15 | 2019-04-15 | Self-locking double-layer folding ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210264482U (en) |
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2019
- 2019-04-15 CN CN201920505558.3U patent/CN210264482U/en active Active
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