A ladder having foldable support legs

Abstract

The utility model belongs to the technical field of ladder with foldable support foot, especially a ladder with foldable support foot, including left side ladder leg and right side ladder leg, be provided with the footboard between left side ladder leg and right side ladder leg, the lower extreme of left side ladder leg and right side ladder leg all are fixedly provided with the anti -skidding plug, the inside of left side ladder leg and right side ladder leg sets up mounting seat, support foot is hinged on mounting seat, rotate support foot to folding state, support foot is in close contact with the inside of left side ladder leg or right side ladder leg, and support foot does not contact ground, rotate support foot to unfolding state, support foot part extends left side ladder leg or right side ladder leg, and the anti -skid pad and anti -skidding plug of support foot end portion support the ladder jointly, the anti -skidding plug is provided with the avoidance gap, and support foot can go in and out the avoidance gap in the process of rotating, the utility model provides a ladder with foldable support foot and support foot can be inboard storage.

Description

Technical Field

[0001] This utility model belongs to the technical field of ladders with foldable support legs, and specifically refers to a ladder with foldable support legs. Background Technology

[0002] Ladders are common climbing tools in people's lives, and the most common types on the market are straight ladders, A-frame ladders, and hanging ladders. In most cases, ladders can meet the user's needs, but in some situations, such as in places with great heights or where frequent movement is required, conventional ladders may become unstable at the bottom, posing a safety hazard. The main reason for this is that the width of the bottom support feet is insufficient.

[0003] Therefore, ladders with foldable support legs have emerged on the market. By unfolding the support legs, a wider base support width can be achieved. For example, Chinese Patent CN201721132012.5 describes a ladder that includes ladder bars and multiple steps fixed between the bars. Support legs are located on the outer sides of the ladder bars, with their upper ends hinged to the ladder bars. A pull rod is provided between the support legs and the ladder bars, with one end hinged to the support leg and the other end hinged to a slider. A guide rail is fixed on the ladder bars, cooperating with the slider. The movement of the slider on the guide rail causes the support legs to rotate relative to the ladder bars, allowing the support legs to extend / fold. When folded, the support legs rest against the sides of the ladder bars; when unfolded, the support legs provide auxiliary support to the ladder. This product significantly improves product stability. However, this product also has some shortcomings: a) When the ladder is folded and stored, the support legs are longer than the ladder bars. That is, when the ladder is folded and stored vertically, the support legs are in contact with the ground and support the entire ladder. The support legs themselves are auxiliary support units but bear the weight of the entire ladder, which puts a large load on the support bars; b) The support legs are located on the outside of the ladder. Collisions have occurred during transportation, handling and moving, which have a certain impact on the support legs. Summary of the Invention

[0004] The purpose of this invention is to provide a ladder with foldable and retractable support legs.

[0005] The purpose of this utility model is achieved as follows:

[0006] A ladder with foldable support legs includes a left ladder leg and a right ladder leg, with a footboard between the left and right ladder legs; anti-slip plugs are fixedly installed at the lower ends of both the left and right ladder legs; mounting seats are provided on the inner sides of the left and right ladder legs, and the support legs are hinged to the mounting seats; when the support legs are rotated to the folded state, the support legs rest against the inner side of the left or right ladder leg and do not touch the ground; when the support legs are rotated to the unfolded state, the support legs extend out of the left or right ladder leg, and the anti-slip pads and anti-slip plugs at the ends of the support legs jointly support the ladder;

[0007] The left ladder leg and / or anti-slip plug are provided with a clearance notch, which allows the support leg to move in and out of the clearance notch during rotation; the right ladder leg and / or anti-slip plug are provided with a clearance notch, which allows the support leg to move in and out of the clearance notch during rotation.

[0008] Furthermore, with the support leg in the extended state, the side wall of the support leg abuts against the upper surface inside the clearance notch, and the upper surface inside the clearance notch provides the support leg with a downward supporting force.

[0009] Furthermore, the mounting base is provided with a backing part, and the support leg is provided with a limiting part that cooperates with the backing part. When the backing part is locked onto the limiting part, the support leg can be kept in a folded state or an unfolded state.

[0010] Furthermore, the protruding part of the abutment portion and the limiting part are at least two recesses on the periphery of the support foot. The protruding part can be limited within the corresponding recess, thereby allowing the support foot to remain in a folded or unfolded state.

[0011] Furthermore, the mounting base is fixedly provided with a fixing rod, the end of which protrudes from the mounting base and forms the protrusion.

[0012] Furthermore, the mounting base has symmetrical protrusions on both sides, and the support foot has recesses on both sides that mate with the protrusions, with both protrusions acting on the support foot simultaneously.

[0013] Furthermore, the mounting base is integrally formed on the anti-slip plug, and the two sides of the mounting base extend to form hinge seats, with the support feet rotatably mounted on the hinge seats.

[0014] Furthermore, the support leg is in a folded state, and the support leg is vertically positioned inside the left or right ladder leg, parallel to the left / right ladder leg.

[0015] Furthermore, with the support legs folded, the anti-slip pads at the ends of the support legs can rest against the surface of the left or right ladder leg.

[0016] Furthermore, the mounting base does not contact the ground.

[0017] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0018] 1. This utility model adopts built-in support feet. In the folded state, the support feet rest against the inside of the left or right ladder leg. Furthermore, the support feet do not touch the ground in the folded state and do not need to bear the load of the ladder itself. The built-in, hidden support feet are less likely to collide during movement, thus protecting the support feet. Moreover, the built-in, hidden design does not obstruct user access; users can choose whether to unfold the support feet for use, making it more versatile.

[0019] 2. Since the support leg is located inside the left or right ladder leg when folded, a clearance notch is provided in the ladder leg and / or anti-slip plug. This clearance notch allows the support leg to unfold effectively, extending to the outside of the left or right ladder leg for auxiliary support. It also provides lateral protection to prevent lateral twisting. Preferably, in the unfolded state, the support leg rests directly against the upper surface of the clearance notch, providing face-to-face support and enhancing stability with auxiliary support.

[0020] 3. The support leg and the mounting base of this utility model are provided with an abutment part and a limiting part, so that the support leg can be kept in the unfolded state and the folded state. The user only needs to swing the support leg to the designated position. In order to prevent the support leg from hitting the left or right ladder leg when it is folded, the anti-slip pad at the end of the support leg can abut against the surface of the left or right ladder leg when it is folded. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the support leg of this utility model in the unfolded state;

[0022] Figure 2 This is a schematic diagram of the internal structure of the support leg of this utility model in the unfolded state;

[0023] Figure 3 yes Figure 2 A magnified structural diagram at point A;

[0024] Figure 4 This is a structural schematic diagram of the folded support leg of this utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of the support leg of this utility model in a folded state;

[0026] Figure 6 yes Figure 5 A magnified structural diagram at point B;

[0027] Figure 7This is one of the schematic diagrams of the structure in the explosion state of this utility model;

[0028] Figure 8 yes Figure 7 A magnified structural diagram at point C;

[0029] Figure 9 This is the second schematic diagram of the structure in the explosive state of this utility model;

[0030] Figure 10 yes Figure 9 A magnified structural diagram at point D.

[0031] In the diagram: 1-ladder; 10-ladder leg clearance notch; 11-left ladder leg; 12-right ladder leg; 13-foot pedal; 14-anti-slip plug; 140-anti-slip plug clearance notch; 142-upper surface of anti-slip plug clearance notch; 15-mounting base; 150-mounting base clearance notch; 151-hinge base; 152-upper surface of mounting base clearance notch; 153-hinge base pivot hole; 16-fixing rod; 161-protrusion; 2-support foot; 21-anti-slip pad; 28-recess; 29-support foot pivot hole. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Figure 1-10 As shown:

[0033] A ladder with foldable support legs includes a left ladder leg 11 and a right ladder leg 12, with a footboard 13 disposed between the left ladder leg 11 and the right ladder leg 12. The accompanying drawings of this application only show the bottom part of the ladder to illustrate the product structure. Ladder 1 is a conventional product on the market, therefore the main body of the ladder is not fully shown. Any ladder with any structure on the market is acceptable, such as a straight ladder, a telescopic ladder, etc. Anti-slip plugs 14 are fixedly installed at the lower ends of both the left ladder leg 11 and the right ladder leg 12. Mounting seats 15 are provided on the inner sides of the left ladder leg 11 and the right ladder leg 12. The support leg 2 is hinged to the mounting seat 15. Preferably, the pivot passes through the pivot hole 29 of the support leg and the pivot hole 153 of the hinge seat in sequence and rotatably connects the two. Of course, the pivot can be an independent part or a part integrally formed on the mounting seat or the support leg. When the support leg 2 is rotated to the folded state, the support leg 2 is close to the inner side of the left ladder leg 11 or the right ladder leg 12 and the support leg 2 does not touch the ground. When the support leg 2 is rotated to the unfolded state, the support leg extends out of the left ladder leg or the right ladder leg, and the anti-slip pad 21 and the anti-slip plug 14 at the end of the support leg jointly support the ladder 1. Users can choose whether to unfold the support leg for use according to their own needs.

[0034] The left ladder leg 11 and / or anti-slip plug 14 are provided with clearance notches, allowing the support leg 2 to move in and out of the clearance notches during rotation; the right ladder leg 12 and / or anti-slip plug 14 are provided with clearance notches, allowing the support leg 2 to move in and out of the clearance notches during rotation. Preferably, the anti-slip plug 14 and the mounting base 15 are connected together, therefore the anti-slip plug and the mounting base are provided with corresponding anti-slip plug clearance notches 140 and mounting base clearance notches 150, allowing the support leg to move in and out of the anti-slip plug clearance notches 140 and the mounting base clearance notches 150. To accommodate the anti-slip plug clearance notches 140 and the mounting base clearance notches 150, the left and right ladder legs are provided with matching ladder leg clearance notches 10.

[0035] With support leg 2 in the extended position, the sidewall of the support leg rests against the upper surface of the inner side of the clearance notch, and the upper surface of the inner side of the clearance notch provides downward support to the support leg. Figure 3 As shown, in the unfolded state, the upper surface of the support leg 2 abuts against the upper surface 152 of the mounting seat clearance notch and the upper surface 142 of the anti-slip plug clearance notch. By abutting against each other face to face, the support leg 2 is effectively supported, making the support leg more stable in the unfolded state.

[0036] The mounting base 15 is provided with a backing part, and the support leg 2 is provided with a limiting part that cooperates with the backing part. When the backing part is locked onto the limiting part, the support leg can be kept in a folded or unfolded state. The positions of the backing part and the limiting part can be interchanged, such as the backing part being provided on the support leg and the limiting part being provided on the mounting base. Preferably, the backing part is a protrusion 161, and the limiting part is at least two recesses 28 on the periphery of the support leg. The protrusion 161 can be limited within the corresponding recesses 28, thereby keeping the support leg 2 in a folded or unfolded state. The protrusion 161 can be at least one of the following: Option 1, the protrusion is a ball, and a spring provides force to the ball against the recess, and the mounting base is provided with a groove for placing the ball and the spring. Option 2, the mounting base is fixedly provided with a fixing rod 16, and the end of the fixing rod 16 protrudes from the mounting base and forms the protrusion. The fixing rod can be a screw rod, which is directly threaded onto the hinge seat 151; of course, the hinge seat is provided with a mounting groove, and the fixing rod can be placed directly into the mounting groove.

[0037] The mounting base 15 has symmetrical protrusions 161 on both sides, and the support foot 2 has recesses 28 on both sides that cooperate with the protrusions 161. The two protrusions 161 act on the support foot 2 at the same time.

[0038] The mounting base can be a separate component, fixed to the anti-slip plug, the left ladder leg, or the right ladder leg; the mounting base can also be integrally formed on the anti-slip plug, with the two sides of the mounting base extending to form hinged seats, and the support feet rotatably mounted on the hinged seats.

[0039] With support leg 2 folded, the support leg is vertically positioned inside the left or right ladder leg, parallel to the left / right ladder leg. When the support leg is folded, the anti-slip pad at the end of the support leg can rest against the surface of the left or right ladder leg.

[0040] The mounting base 15 does not contact the ground.

[0041] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A ladder with foldable support legs, comprising a left ladder leg (11) and a right ladder leg (12), wherein a footboard (13) is provided between the left ladder leg (11) and the right ladder leg (12); and an anti-slip plug (14) is fixedly provided at the lower end of both the left ladder leg (11) and the right ladder leg (12); characterized in that: Mounting bases (15) are provided on the inner sides of the left ladder leg (11) and the right ladder leg (12), and the support foot (2) is hinged to the mounting base (15); when the support foot is rotated to the folded state, the support foot (2) is close to the inner side of the left ladder leg (11) or the right ladder leg (12), and the support foot (2) does not touch the ground; when the support foot is rotated to the unfolded state, the support foot (2) extends out of the left ladder leg (11) or the right ladder leg (12), and the anti-slip pad (21) and the anti-slip plug (14) at the end of the support foot jointly support the ladder (1); The left ladder leg (11) and / or anti-slip plug (14) and / or mounting base (15) are provided with clearance notches, and the support leg (2) can enter and exit the clearance notches during rotation; the right ladder leg (12) and / or anti-slip plug (14) and / or mounting base (15) are provided with clearance notches, and the support leg (2) can enter and exit the clearance notches during rotation.

2. The ladder with foldable support legs according to claim 1, characterized in that: With the support leg extended, the side wall of the support leg rests against the upper surface inside the clearance notch, and the upper surface inside the clearance notch provides downward support to the support leg.

3. The ladder with foldable support legs according to claim 1 or 2, characterized in that: The mounting base (15) is provided with an abutment, and the support foot (2) is provided with a limiting part that cooperates with the abutment. When the abutment is locked onto the limiting part, the support foot (2) can be kept in a folded state or an unfolded state.

4. The ladder with foldable support legs according to claim 3, characterized in that: The protruding part (161) of the abutment part and the limiting part are at least two recesses (28) on the periphery of the support foot (2). The protruding part can be limited in the corresponding recess, so that the support foot (2) can be kept in a folded or unfolded state.

5. The ladder with foldable support legs according to claim 4, characterized in that: The mounting base (15) is fixedly provided with a fixing rod (16), the end of which protrudes from the mounting base (15) and forms the protrusion (161).

6. The ladder with foldable support legs according to claim 4 or 5, characterized in that: The mounting base (15) has symmetrical protrusions (161) on both sides, and the support foot (2) has recesses (28) on both sides that cooperate with the protrusions. The two protrusions act on the support foot (2) at the same time.

7. The ladder with foldable support legs according to claim 1, 2, 4, or 5, characterized in that: The mounting base (15) is integrally formed on the anti-slip plug (14), and the mounting base (15) extends on both sides to form a hinge seat (151), and the support foot (2) is rotatably set on the hinge seat (151).

8. The ladder with foldable support legs according to claim 7, characterized in that: The support leg (2) is in a folded state. The support leg (2) is vertically set inside the left ladder leg (11) or the right ladder leg (12). The support leg (2) is parallel to the left ladder leg (11) / right ladder leg (12).

9. The ladder with foldable support legs according to claim 7, characterized in that: The support leg (2) is in a folded state, and the anti-slip pad (21) at the end of the support leg can abut against the surface of the left ladder leg (11) or the right ladder leg (12).

10. The ladder with foldable support legs according to claim 1, 2, 4, 5, 8, or 9, characterized in that: The mounting base (15) does not contact the ground.

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