CN209908393U

CN209908393U - Ladder

Info

Publication number: CN209908393U
Application number: CN201821883770.5U
Authority: CN
Inventors: 程鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-15
Filing date: 2018-11-15
Publication date: 2020-01-07
Anticipated expiration: 2028-11-15

Abstract

The utility model discloses a ladder, which aims to overcome the problem that the ladder is inconvenient to store and carry due to the cross bar which improves the support stability in the prior art, and comprises a ladder body, wherein a support frame is arranged on the ladder body, a foot pad is fixedly arranged on the support frame, the support frame can be folded on the ladder body or unfolded from the ladder body, a locking mechanism is arranged between the support frame and the ladder body, and when the support frame is folded on the ladder body or unfolded from the ladder body, the locking mechanism can fix the support frame and the ladder body together; when the support frame is folded on the ladder body, the foot pad is supported at the lower end of the ladder body; when the support frame is unfolded from the ladder body, the support frame drives the foot pad to move to the outer side of the ladder body, and the foot pad can support the ladder body in the lateral direction of the ladder body, so that the ladder has the advantages of stable support, convenience in carrying, convenience in storage and reasonable structure.

Description

Ladder

Technical Field

The utility model belongs to the field of living tools, in particular to a ladder.

Background

The ladder is a common height-climbing tool in people's life, and the common ladder that has now on the market is straight ladder, double ladder, string ladder etc.. In most cases, the ladder can meet the use requirements of users, but in some cases, such as high use places or use places requiring frequent actions of users, the conventional ladder has unstable support between the bottom and the ground, which brings potential safety hazards.

In the ladder among the prior art, the bottom of ladder is fixed with the horizontal pole that a wide in the width of ladder, and the both ends of horizontal pole are fixed with the callus on the sole, and the support range of broad is favorable to improving the stability of support, but the horizontal pole is because the size is big, leads to the ladder to have the problem of not being convenient for to accomodate and carry.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough and problem that exists of prior art, the utility model provides a support stable, be convenient for accomodate and portable's ladder.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a ladder comprises a ladder body, wherein a support frame is arranged on the ladder body, a foot pad is fixedly arranged on the support frame, the support frame can be folded on the ladder body or unfolded from the ladder body, a locking mechanism is arranged between the support frame and the ladder body, and when the support frame is folded on the ladder body or unfolded from the ladder body, the locking mechanism can fix the support frame and the ladder body together; when the support frame is folded on the ladder body, the foot pad is supported at the lower end of the ladder body; when the support frame is unfolded from the ladder body, the support frame drives the foot pad to move to the outer side of the ladder body, and the foot pad can support the ladder body in the lateral direction of the ladder body.

Preferably, the lower end of the ladder body and the foot pad may together support the ladder body when the support frame is deployed from the ladder body.

Preferably, the upper end of the foot pad is provided with a first abutting surface, the lower end of the foot pad is provided with a second abutting surface and a third abutting surface, when the support frame is folded on the ladder body, the first abutting surface and the lower end of the ladder body abut together and can abut against the ground, and when the support frame is unfolded from the ladder body, the third abutting surface and the lower end of the ladder body can abut against the ground together.

Preferably, the first abutting surface is an arc-shaped surface, the lower end surface of the ladder body is also the arc-shaped surface, and when the first abutting surface abuts against and abuts against the lower end of the ladder body, the first abutting surface and the lower end surface of the ladder body are attached together.

Preferably, the lower end edge of the ladder body is rounded.

Preferably, the support frame is rotatably arranged on the ladder body, and the support frame can be folded on the ladder body or unfolded from the ladder body, so that the foot pad can be supported at the lower end of the ladder body or laterally support the ladder body.

Preferably, the locking mechanism comprises a lower pull rod, one end of the lower pull rod is rotatably connected to the support frame, the other end of the lower pull rod is rotatably connected with a sliding block, a sliding rail is fixedly arranged on the side face of the ladder body, the sliding block is slidably arranged on the sliding rail, the sliding block, the lower pull rod, the support frame and the sliding rail form a plane connecting rod mechanism, when the support frame is unfolded from the ladder body, the plane connecting rod mechanism is located at a dead point position, and therefore the support frame and the ladder body are fixed together.

Preferably, when the plane link mechanism is located at the dead point position, the rotation direction of the lower link with respect to the slider coincides with the sliding direction of the slider.

Preferably, the support frame is provided with a containing groove, and when the support frame is folded on the ladder body, the lower pull rod and the sliding block are contained in the containing groove together.

Preferably, the locking mechanism comprises a first clamping head and a second clamping head, the first clamping head is fixedly arranged on the ladder body, the second clamping head is fixedly arranged on the support frame, a rotating shaft is arranged on the first clamping head, the first clamping head is rotatably connected with the second clamping head through the rotating shaft, the first clamping head can slide along the length direction of the rotating shaft, when the support frame is folded on the ladder body or unfolded from the ladder body, the first clamping head slides, the first clamping head and the second clamping head can be clamped together, so that the support frame and the ladder body are fixed together, an elastic piece is arranged between the first clamping head and the second clamping head, the elastic piece forces the first clamping head to slide in the direction away from the second clamping head, a fastener is connected on the rotating shaft, and the fastener can clamp the first clamping head on the second clamping head.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

(1) in the utility model, the locking mechanism is arranged between the support frame and the ladder body, when the support frame is folded on the ladder body or unfolded from the ladder body, the locking mechanism can fix the support frame and the ladder body together, the support frame is prevented from shaking randomly relative to the ladder body, the ladder is convenient to carry, transport and store after being folded, and the firm structure after being unfolded is favorable for improving the stability of the support; when the support frame is folding on the ladder body, the support frame accessible rotates and folds on the ladder body, and the support frame extends the lower extreme of ladder body, and the callus on the sole bearing is at the lower extreme of ladder body, and the weight of the direct bearing ladder body of callus on the sole avoids locking mechanism to bear the weight of ladder body and support frame, has consequently improved locking mechanism's life.

(2) The utility model discloses in, expand from the ladder body when the support frame, the support frame drives the callus on the sole and removes to the outside of ladder body, and the callus on the sole can support the ladder body in the side direction of ladder body, and the support frame expandes the back, and the ladder body is kept away from to the callus on the sole, and the support scope grow of callus on the sole, when the user scrambles this ladder body, the callus on the sole mainly avoids ladder body side direction to rock, therefore this ladder has the support stable, conveniently carries, convenient advantage of accomodating.

(3) The utility model discloses in, expand from the ladder body when the support frame, the ladder body can be supported jointly to the lower extreme and the callus on the sole of ladder body, and during the use of this ladder, the support frame expands from the ladder body, and locking mechanism is together fixed with support frame and ladder body, and the lower extreme and the callus on the sole of ladder body all can support and lean on subaerial, and the lower extreme and the callus on the sole of ladder body undertake the weight of ladder body jointly, have consequently further improved the stability of support.

(4) In the utility model, a first abutting surface is formed at the upper end of the foot pad, a second abutting surface and a third abutting surface are formed at the lower end of the foot pad, when the support frame is folded on the ladder body, the first abutting surface and the lower end of the ladder body abut together, the second abutting surface can abut on the ground, the folded ladder is placed on the ground, and the second abutting surface can contact with the ground; when the support frame is unfolded from the ladder body, the third abutting surface and the lower end of the ladder body can abut against the ground together, the unfolded ladder is placed on the ground, and the third abutting surface is in contact with the ground; the surface contact is favorable for avoiding the foot pad from slipping, so that the stability of the support is further improved.

(5) Locking mechanism includes the lower pull rod, the one end of lower pull rod is rotated and is connected on the support frame, the other end of lower pull rod rotates and is connected with the slider, the fixed slide rail that is provided with in side of ladder body, the slider slides and sets up on the slide rail, the slider, the lower pull rod, support frame and slide rail constitute plane link mechanism, expand from the ladder body when the support frame, this plane link mechanism is located the dead point position, thereby support frame and ladder body are together fixed, when needs are with the support frame folding ladder body on, the bare-handed promotion slider of user slides or the pulling lower pull rod rotates and just can drive the support frame and fold the ladder body on, consequently this ladder body has convenient to use, and the operation is simple, the advantage of reliable.

Drawings

FIG. 1 is a schematic view of the support frame of the present invention shown deployed from the ladder body;

fig. 2 is a schematic structural diagram of the present invention at "a" in fig. 1;

FIG. 3 is a schematic view of the support frame of the present invention folded onto the ladder body;

fig. 4 is a schematic diagram of the explosion structure of the present invention;

fig. 5 is a schematic cross-sectional view of the connection position of the first engaging head and the second engaging head of the present invention;

fig. 6 is a schematic structural view of the support rod of the present invention;

fig. 7 is a schematic structural view of a first engaging head of the present invention;

FIG. 8 is a schematic view of the foot pad of the present invention at different viewing angles;

fig. 9 is a schematic structural diagram of the present invention at "B" in fig. 3;

in the figure: 1-ladder body, 2-support frame, 21-second clamping head, 211-second clamping tooth,

22-accommodating groove, 3-foot pad, 31-first abutting surface, 32-second abutting surface, 33-third abutting surface,

4-lower pull rod, 5-slide block, 6-slide rail, 7-first clamping head, 71-first clamping tooth, 8-rotating shaft,

9-fastener, 10-elastic element, 11-wheel assembly.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

In the ladder among the prior art, the bottom of ladder is fixed with the horizontal pole that a wide in the width of ladder, and the both ends of horizontal pole all are fixed with the callus on the sole, and the support range of broad is favorable to improving the stability of support, but the horizontal pole is because the size is big, leads to the ladder to have the problem of not being convenient for to accomodate and carry.

Referring to fig. 1 to 9, the utility model provides a ladder, overall structure bilateral symmetry, including ladder body 1, ladder body 1 can be a word ladder, double ladder, engineering ladder etc. and ladder body 1 is the double ladder in this embodiment.

Set up support frame 2 on the ladder body 1, support frame 2 is a member, the fixed callus on the sole 3 that is provided with on support frame 2, during the use of this ladder, callus on the sole 3 is direct contact with ground, callus on the sole 3 can adopt wear-resisting, skid-proof rubber materials makes, support frame 2 is collapsible on ladder body 1 or expand from ladder body 1, during the use of this ladder, thereby support frame 2 expands from the ladder and obtains great support range, the transport, when carrying this ladder, support frame 2 is folding on the ladder, consequently, the overall structure of this ladder is compact, occupation space is little, be favorable to accomodating and carrying.

Be provided with locking mechanism between support frame 2 and the ladder body 1, expand on ladder body 1 or from ladder body 1 when support frame 2 is folding, locking mechanism all can be in the same place support frame 2 and ladder body 1 are fixed, and locking mechanism can keep support frame 2 folding on ladder body 1 or keep ladder body 1 expansion relatively, avoids support frame 2 to rock at will relatively ladder body 1, has consequently improved the supporting effect, has made things convenient for the transportation and has accomodate.

Folding on ladder body 1 when support

frame

2, 2 accessible of support frame are rotated and are folded on ladder body 1, and support frame 2 extends ladder body 1's lower extreme, and 3 bearings of callus on the sole are at ladder body 1's lower extreme, and 3 direct bearing ladder body 1's of callus on the sole weight avoids locking mechanism to bear ladder body 1 and support frame 2's weight, has consequently improved locking mechanism's life.

Expand from ladder body 1 when support frame 2, support frame 2 drives callus on the sole 3 and removes to the outside of ladder body 1, callus on the sole 3 can be at ladder body 1's side direction support ladder body 1, support frame 2 expandes the back, ladder body 1 is kept away from to callus on the sole 3, callus on the sole 3's support scope grow, when the user scrambles this ladder body 1, callus on the sole 3 mainly avoids 1 side direction of ladder body to rock, consequently this ladder has long service life, support stably, conveniently carry, convenient advantage of accomodating.

The support frame 2 can be a pair of, and a pair of support frame 2 can expand respectively in the left and right sides of ladder body 1, and when a pair of support frame 2 was fixed on ladder body 1 through locking mechanism, fixed callus on the sole 3 that is provided with respectively on a pair of support frame 2, and the callus on the sole 3 on the support frame 2 can avoid rocking of ladder body 1 about the side.

When the support frame 2 is unfolded from the ladder body 1, the lower end of the ladder body 1 and the foot pad 3 can jointly support the ladder body 1, when the ladder is used, the support frame 2 is unfolded from the ladder body 1, the support frame 2 and the ladder body 1 are fixed together by the locking mechanism, the lower end of the ladder body 1 and the foot pad 3 can be abutted against the ground, the lower end of the ladder body 1 and the foot pad 3 jointly bear the weight of the ladder body 1, and therefore the supporting stability is further improved.

The upper end of callus on the sole 3 is formed with the first face 31 that supports, the first face 31 that supports is located the side of support frame 2 that supports, the lower extreme of callus on the sole 3 is formed with the second and supports and support face 32 and third and support face 33, the second supports and supports face 32 and third and support the below that face 33 all is located support frame 2, fold on ladder body 1 when support frame 2, the first lower extreme butt that supports face 31 and ladder body 1 together, the second supports and supports face 32 butt subaerial, this ladder that will fold falls to the ground places, the second supports and supports face 32 and can be in the same place with ground surface contact, great area of contact is favorable to the antiskid, consequently the ladder of folding also can fall to the ground smoothly and place.

Expand from ladder body 1 when support frame 2, but the third supports and leans on face 33 and ladder body 1's lower extreme butt jointly subaerial, and the third supports and leans on face 33 and ladder body 1's lower extreme to be in same horizontal plane, and this ladder after will expanding falls to the ground to place, and the third supports and leans on face 33 and ground surface contact together, and callus on the sole 3 skids when avoiding the user to climb this ladder body 1, has consequently further improved the stability of support.

First support to lean on face 31 to be the arcwall face, the lower terminal surface of ladder body 1 also is the arcwall face, and when first support to lean on face 31 and ladder body 1's lower extreme butt together, first support to lean on face 31 and ladder body 1's lower terminal surface laminating and support tightly together, when callus on the sole 3 bearing ladder body 1, the lower extreme of avoiding ladder body 1 slides on first support to face 31, has further improved the stability of bearing.

The lower extreme border of ladder body 1 has the fillet, and the fillet plays the guide effect at the in-process that callus on the sole 3 removed the lower extreme of ladder body 1, consequently makes things convenient for first support to face 31 and the lower extreme laminating of ladder body 1 to be in the same place.

The support frame 2 rotates and sets up on ladder body 1, rotates support frame 2, and support frame 2 can be collapsible to the ladder body 1 on or expand from ladder body 1 to callus on the sole 3 can bear at the lower extreme of ladder body 1 or at 1 side support ladder body 1 of ladder body. A pair of support frame 2 rotates respectively and sets up the left and right sides at ladder body 1, all fixes being provided with callus on the sole 3 on support frame 2, and callus on the sole 3 is fixed to be set up at the lower extreme of the support frame 2 that corresponds, and callus on the sole 3 is protruding to one side of support frame 2 to when support frame 2 is folded on ladder body 1, callus on the sole 3 can be in the same place with the lower extreme butt of ladder body 1.

Locking mechanism includes lower link 4, and the one end of lower link 4 is rotated and is connected on support frame 2, and the other end of lower link 4 rotates and is connected with slider 5, and the fixed slide rail 6 that is provided with in side of ladder body 1, and the length direction of slide rail 6 is unanimous with the length direction of ladder body 1, and slider 5 slides and sets up on slide rail 6, and slider 5, lower link 4, support frame 2 and slide rail 6 constitute plane link mechanism, when support frame 2 expandes from ladder body 1, this plane link mechanism is located the dead point position, thereby support frame 2 and ladder body 1 are fixed together.

When the plane link mechanism is located at the dead point position, the rotation direction of the lower link 4 with respect to the slider 5 coincides with the sliding direction of the slider 5.

When using this ladder, the bare-handed outside pulling support frame 2 of user, the support frame 2 just can be followed ladder body 1 and expanded, and the planar link mechanism is in the dead point position after expanding, and support frame 2 is fixed together relative ladder body 1, but consequently callus on the sole 3 side direction support ladder body 1. When the support frame 2 needs to be folded onto the ladder body 1, a user can push the sliding block 5 to slide or pull the lower pull rod 4 to rotate by hands, and the support frame 2 can be folded onto the ladder body 1, so that the ladder body 1 has the advantages of convenience in use, simplicity in operation and reliable structure.

The holding groove 22 is formed in the support frame 2, the holding groove 22 is formed in the side face of the support frame 2, and when the support frame 2 is folded on the ladder body 1, the lower pull rod 4 and the sliding block 5 are both held in the holding groove 22, so that the structure compactness is further improved.

The locking mechanism comprises a first clamping head 7 and a second clamping head 21, the first clamping heads 7 are fixedly arranged on the ladder body 1, the first clamping heads 7 are a pair, and the pair of first clamping heads 7 are fixedly arranged on the left side and the right side of the ladder. The second engaging heads 21 are fixedly disposed on the supporting frames 2, the second engaging heads 21 are a pair, and the pair of second engaging heads 21 are respectively fixedly disposed at the upper ends of the pair of supporting frames 2. Be provided with pivot 8 on the first joint head 7, pivot 8 is the bolt in fact, pivot 8 is a pair of, a pair of pivot 8 sets up respectively on a pair of first joint head 7, first joint head 7 rotates through pivot 8 and connects second joint head 21, first joint head 7 can slide along the length direction of pivot 8, fold on ladder body 1 or expand from ladder body 1 when support frame 2, slide first joint head 7, but first joint head 7 and second joint head 21 joint are in the same place to support frame 2 and ladder body 1 are fixed together.

Be provided with elastic component 10 between first joint head 7 and the second joint head 21, elastic component 10 is coil spring, elastic component 10 forces first joint head 7 to slide towards the direction of keeping away from second joint head 21, be connected with fastener 9 on the pivot 8, fastener 9 can be the bolt, fastener 9 threaded connection is on pivot 8, fastener 9 can be with first joint head 7 joint on second joint head 21, fastener 9's overall structure is the knob molding, the user can bare-handed rotation fastener 9 just can adjust the relation of connection between first joint head 7 and the second joint head 21, consequently, locking mechanism's operation convenience has further been improved.

The first clamping head 7 is provided with a plurality of first clamping teeth 71, the first clamping teeth 71 are uniformly arranged on the first clamping head 7 in the circumferential direction by taking the rotating shaft 8 as an axis, the first clamping teeth 71 are provided with a plurality of second clamping teeth 211 corresponding to the first clamping teeth 71 along the second clamping head 21, the second clamping teeth 211 are uniformly arranged on the second clamping head 21 in the circumferential direction by taking the rotating shaft 8 as the axis, and the first clamping teeth 71 and the second clamping teeth 211 can be mutually matched together, so that the first clamping head 7 and the second clamping head 21 can be meshed together at a plurality of angles.

The side of support frame 2 is rotated and is provided with wheel subassembly 11, and wheel subassembly 11 is close to the lower extreme of support frame 2, and when the ladder used, wheel subassembly 11 was unsettled, and wheel subassembly 11 does not influence the normal use of ladder, and during the ladder transport, ladder body 1 ground slope relatively, and wheel subassembly 11 can support and lean on subaerial to conveniently carry this ladder.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A ladder comprises a ladder body (1), and is characterized in that a support frame (2) is arranged on the ladder body (1), a foot pad (3) is fixedly arranged on the support frame (2), the support frame (2) can be folded on the ladder body (1) or unfolded from the ladder body (1), a locking mechanism is arranged between the support frame (2) and the ladder body (1), and when the support frame (2) is folded on the ladder body (1) or unfolded from the ladder body (1), the support frame (2) and the ladder body (1) can be fixed together by the locking mechanism; when the support frame (2) is folded on the ladder body (1), the foot pad (3) is supported at the lower end of the ladder body (1); when the support frame (2) is unfolded from the ladder body (1), the support frame (2) drives the foot pad (3) to move to the outer side of the ladder body (1), and the foot pad (3) can support the ladder body (1) in the lateral direction of the ladder body (1).

2. A ladder as claimed in claim 1, characterized in that the lower end of the ladder body (1) and the foot pads (3) jointly support the ladder body (1) when the support frame (2) is unfolded from the ladder body (1).

3. A ladder as claimed in claim 1 or 2, characterized in that the foot pads (3) are formed with a first abutment surface (31) at their upper end and a second abutment surface (32) and a third abutment surface (33) at their lower end, the first abutment surface (31) and the lower end of the ladder body (1) abutting together when the support frame (2) is folded onto the ladder body (1), the second abutment surface (32) being adapted to abut against the ground, and the third abutment surface (33) and the lower end of the ladder body (1) being adapted to abut together against the ground when the support frame (2) is unfolded from the ladder body (1).

4. A ladder as claimed in claim 3, characterized in that the first abutment surface (31) is an arc-shaped surface and the lower end surface of the ladder body (1) is also an arc-shaped surface, when the first abutment surface (31) and the lower end of the ladder body (1) abut together, the first abutment surface (31) and the lower end surface of the ladder body (1) abut and abut together.

5. A ladder as claimed in claim 4, characterized in that the lower end edge of the ladder body (1) is rounded.

6. A ladder as claimed in any one of claims 1 or 2 or 4 or 5, characterised in that the support frame (2) is rotatably arranged on the ladder body (1), the support frame (2) is rotated, the support frame (2) can be folded onto the ladder body (1) or unfolded from the ladder body (1), so that the foot mat (3) can be held at the lower end of the ladder body (1) or laterally support the ladder body (1) at the ladder body (1).

7. A ladder as claimed in claim 6, characterized in that the locking mechanism comprises a lower pull rod (4), one end of the lower pull rod (4) is rotatably connected to the support frame (2), the other end of the lower pull rod (4) is rotatably connected with a slide block (5), a slide rail (6) is fixedly arranged on the side of the ladder body (1), the slide block (5) is slidably arranged on the slide rail (6), the slide block (5), the lower pull rod (4), the support frame (2) and the slide rail (6) form a planar linkage mechanism, and when the support frame (2) is unfolded from the ladder body (1), the planar linkage mechanism is located at a dead center position, so that the support frame (2) and the ladder body (1) are fixed together.

8. A ladder as claimed in claim 7, characterized in that the direction of rotation of the lower link (4) relative to the slide (5) coincides with the sliding direction of the slide (5) when the planar linkage is in the dead centre position.

9. A ladder as claimed in claim 7 or 8, characterised in that the support frame (2) is provided with a receiving slot (22) and that the lower tie rod (4) and the slider (5) are received together in the receiving slot (22) when the support frame (2) is folded onto the ladder body (1).

10. A ladder according to claim 1 or 2 or 4 or 5 or 7 or 8, characterized in that the locking mechanism comprises a first engaging head (7) and a second engaging head (21), the first engaging head (7) is fixedly arranged on the ladder body (1), the second engaging head (21) is fixedly arranged on the support frame (2), a rotating shaft (8) is arranged on the first engaging head (7), the first engaging head (7) is rotatably connected with the second engaging head (21) through the rotating shaft (8), the first engaging head (7) can slide along the length direction of the rotating shaft (8), when the support frame (2) is folded on the ladder body (1) or unfolded from the ladder body (1), the first engaging head (7) is slid, the first engaging head (7) and the second engaging head (21) can be engaged together, thereby the support frame (2) and the ladder body (1) are fixed together, be provided with elastic component (10) between first joint head (7) and second joint head (21), elastic component (10) force first joint head (7) to slide towards the direction of keeping away from second joint head (21), are connected with fastener (9) on pivot (8), and fastener (9) can be with first joint head (7) joint on second joint head (21).