Telescopic herringbone ladder

Abstract

The utility model relates to a telescopic herringbone ladder which comprises a frame A and a frame B, the top end of the frame A is hinged to the top end of the frame B; the folding chair is characterized in that each of the frame A and the frame B comprises a telescopic side rod and a pedal; the antiskid supporting plate structure is arranged on the upper side edge of the pedal at the top end of the herringbone ladder in an extending manner, and the end parts of the two adjacent herringbone ladders are hinged through the side edge of the antiskid supporting plate, so that the area of a treading area at the top end of the herringbone ladder is increased, a user can turn around more conveniently, and the safety is higher; in addition, the adjusting device of the stop pin is directly installed on the pedal, extending and retracting of the stop pin are adjusted through a driving block in a stop module at the end of the pedal, and adjustment is more convenient and faster. In addition, the anti-skid module is arranged at the bottom end of the herringbone ladder, the herringbone ladder is provided with the anti-skid edge which can be completely attached to the ground in the unfolded state, the contact area is increased, the friction force is improved, and the anti-skid performance is better.

Description

Technical Field

[0001] The utility model relates to the technical field of ladders, in particular to a telescopic herringbone ladder. Background Art

[0002] The early herringbone ladders consisted of two fixed ladders and a positioning device disposed between the two fixed ladders. The top ends of the two fixed ladders were rotatably connected, and the two fixed ladders could be opened to form a herringbone ladder or folded to form a straight ladder. The herringbone ladder was an independent ladder with a wide range of applications.

[0003] At present, there are some problems when using general telescopic stepladders, among which the most important problems are anti-skid performance and adjustability. During use, the stepping area at the top position is small, and it is not easy for people to turn around after stepping on it; two adjacent frame structures are often fastened with ropes to ensure that the angle is fixed in the working state. In addition, a simple anti-skid rubber sleeve is nested at the bottom, which has a small contact area with the ground in an inclined state, is easy to fall off, and has poor stability; this method cannot solve the anti-skid problem at the contact point of the bottom end of the telescopic stepladder and the anti-skid problem at the top; in addition, in terms of adjustability, a common method is to manually adjust the pin hole position to select the length of the ladder, and then manually insert the stop pin structure. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a telescopic herringbone ladder, which can solve the problems of poor anti-slip performance and inconvenient telescopic adjustment of a general herringbone ladder.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a telescopic stepladder, comprising a frame A and a frame B; the top of the frame A is hingedly connected to the top of the frame B; the innovation lies in: the frame A and the frame B both include telescopic side rods and pedals;

[0006] The telescopic side rods have a pair and are arranged parallel to each other. The telescopic side rods include a plurality of side rod units nested and connected in the axial direction, and adjacent side rod units can be telescopically adjusted in the axial direction; the side rod units are provided with stop holes that cooperate with the pedals;

[0007] The pedal is arranged between two telescopic side rods parallel to each other, and the end of the pedal is nested on the side rod unit. An adjustable stop module is arranged near the end of the pedal. The stop module is embedded in the stop holes on the two side rod units to realize the stop locking between adjacent side rod units, or the stop module is withdrawn from the stop holes on the side rod units to realize the telescopic adjustment between adjacent side rod units.

[0008] The side of the frame A near the top is connected to the side of the frame B near the top through a protective rod, and the two ends of the protective rod are respectively hinged on the frame A and the frame B; the protective rod is a two-section structure and is hingedly connected by a hinge pin, and can rotate around the axis of the hinge pin;

[0009] The top of the frame A and the frame B are both horizontally provided with a top pedal, and an anti-skid support plate extends horizontally on the edge of the top pedal. The side edge of the anti-skid support plate on the top of the frame A is movably connected with the side edge of the anti-skid support plate on the top of the frame B via a hinge; anti-skid stripes are provided on the upper surface of the anti-skid support plate.

[0010] Furthermore, a U-shaped slot is provided on the bottom end of the frame A, and an anti-slip module is arranged in the U-shaped slot; the anti-slip module includes a snap-in plate and an anti-slip block; the snap-in plate is a rectangular plate structure, and the snap-in plate is embedded in the U-shaped slot at the bottom end of the frame A; the two ends of the snap-in plate extend out of the outside of the side rod unit; the anti-slip block is nested on the end of the snap-in plate; the anti-slip block has an anti-slip edge with an obtuse angle, and the connection between the two anti-slip edges is located at the midline position of the bottom end of the snap-in plate, and a plurality of anti-slip grooves are provided at the bottom end of the anti-slip edge; the anti-slip block is provided with a connecting groove that easily accommodates the end of the snap-in plate to be embedded.

[0011] Furthermore, the bottom end of the frame B is nested and wrapped with a non-slip rubber sleeve.

[0012] Furthermore, the pedal comprises a pedal housing and a nesting ring; the pedal housing is a rectangular shell structure, and the two ends of the pedal housing are opened, and one side is provided with an adjustment opening; the nesting ring has a pair of and is respectively embedded at the two ends of the pedal housing opening, and the nesting ring has a pin hole that is connected to the inner cavity of the pedal housing;

[0013] The stop module is installed on the pedal housing near the end position, and the stop module includes a stop pin, a pin body guide sleeve, a spring and a drive block; the pin body guide sleeve is arranged in the pedal housing, and a spring is arranged in the pin body guide sleeve; a limiting step is arranged on the outer contour of the stop pin, one end of the stop pin is embedded in the pin body guide sleeve and connected to the spring, and the other end of the stop pin extends through the pin hole to the nesting ring; the limiting step on the stop pin is pressed against the outer side of the pin hole for limiting; the drive block is connected to the side of the stop pin and passes through the adjustment port on the pedal housing; the position of the stop pin is adjusted by toggling the drive block, so that the end of the stop pin can enter and exit the stop hole on the side rod unit.

[0014] The advantages of the utility model are:

[0015] 1) In the utility model, an anti-skid support plate structure is extended on the side edge of the pedal at the top of the stepladder, and the ends of two adjacent stepladders are hingedly connected through the side edge of the anti-skid support plate. This connection method increases the treadable area at the top of the stepladder, which is more convenient for users to turn around and has higher safety. In addition, the adjustment setting of the stop pin is directly installed on the pedal, and the extension and retraction of the stop pin are adjusted by the driving block in the stop module at the end of the pedal, which makes the adjustment more convenient and quick. In addition, an anti-skid module is provided at the bottom end of the stepladder, and the stepladder has an anti-skid edge that can fully fit with the ground in the unfolded state, thereby increasing the contact area, improving the friction, and having better anti-skid performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 The utility model is a structural schematic diagram of a telescopic herringbone ladder.

[0018] Figure 2 The utility model is a cross-sectional view of a pedal of a telescopic herringbone ladder. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1 Figure 2 The telescopic stepladder shown comprises a frame A1 and a frame B2; the top end of the frame A1 is hingedly connected to the top end of the frame B2; the frame A1 and the frame B2 both comprise a telescopic side rod 3 and a pedal 4.

[0022] The telescopic side rods 3 have a pair and are arranged parallel to each other. The telescopic side rods 3 include a plurality of side rod units nested and connected in the axial direction, and adjacent side rod units can be telescopically adjusted in the axial direction; the side rod units are provided with stop holes that cooperate with the pedals 4.

[0023] The pedal 4 is arranged between two telescopic side rods 3 which are parallel to each other, and the end of the pedal 4 is nested in the side rod unit. An adjustable stop module 5 is arranged near the end position of the pedal 4. The stop module 5 is embedded in the stop holes on the two side rod units to realize the stop locking between adjacent side rod units, or the stop module 5 is withdrawn from the stop holes on the side rod units to perform telescopic adjustment between adjacent side rod units.

[0024] The side of frame A1 near the top is connected to the side of frame B2 near the top through a protective rod 6, and the two ends of the protective rod 6 are respectively hinged on frame A1 and frame B2; the protective rod is a two-section structure and is hingedly connected by a hinge pin, and can rotate around the axis of the hinge pin.

[0025] A top pedal is horizontally arranged at the top of both frame A1 and frame B2, and an anti-skid support plate 7 extends horizontally on the edge of the top pedal. The side edge of the anti-skid support plate 7 on the top of frame A1 and the side edge of the anti-skid support plate 7 on the top of frame B2 are movably connected by a hinge; anti-skid stripes are arranged on the upper surface of the anti-skid support plate 7.

[0026] A U-shaped slot is provided on the bottom end of the frame A1, and an anti-slip module 8 is arranged in the U-shaped slot; the anti-slip module 8 includes a snap-in plate 81 and an anti-slip block 82; the snap-in plate 81 is a rectangular plate-like structure, and the snap-in plate 81 is embedded in the U-shaped slot at the bottom end of the frame A1; both ends of the snap-in plate 81 extend out of the outside of the side rod unit; the anti-slip block 82 is nested on the end of the snap-in plate 81; the anti-slip block 82 has an anti-slip edge with an obtuse angle, and the connection between the two anti-slip edges is located at the midline position of the bottom end of the snap-in plate 81, and a plurality of anti-slip grooves are provided at the bottom end of the anti-slip edge; the anti-slip block 82 is provided with a connecting groove that easily accommodates the end of the snap-in plate 81 to be embedded.

[0027] The upper nesting of the bottom end of the frame B2 is wrapped with a non-slip rubber sleeve.

[0028] The pedal 4 includes a pedal shell 41 and a nesting ring 42; the pedal shell 41 is a rectangular shell structure, and the pedal shell 41 is opened at both ends, and an adjustment opening is opened on one side; the nesting ring 42 has a pair of and is respectively embedded at the two ends of the opening of the pedal shell 41, and a pin hole is opened on the nesting ring 42 to communicate with the inner cavity of the pedal shell 41.

[0029] The stop module 5 is installed on the pedal housing 41 near the end position, and the stop module 5 includes a stop pin 51, a pin body guide sleeve 52, a spring 53 and a drive block 54; the pin body guide sleeve 52 is arranged in the pedal housing 41, and a spring 53 is arranged in the pin body guide sleeve 52; a limiting step is arranged on the outer contour of the stop pin 51, one end of the stop pin 51 is embedded in the pin body guide sleeve 52 and connected to the spring 53, and the other end of the stop pin 51 passes through the pin hole and extends into the nesting ring 42; the limiting step on the stop pin 51 is pressed against the outer side of the pin hole for limiting; the drive block 54 is connected to the side of the stop pin 51 and passes through the adjustment port on the pedal housing 41; the position of the stop pin 51 is adjusted by toggling the drive block 54, so that the end of the stop pin 51 can enter and exit the stop hole on the side rod unit.

[0030] The working principle of the utility model is as follows: an anti-skid support plate structure is extended on the side edge of the pedal at the top of the stepladder, and the ends of two adjacent stepladders are hingedly connected through the side edge of the anti-skid support plate. This connection method increases the treadable area at the top of the stepladder, which is more convenient for users to turn around and has higher safety. In addition, the adjustment setting of the stop pin is directly installed on the pedal, and the extension and retraction of the stop pin are adjusted by the driving block in the stop module at the end of the pedal, which makes the adjustment more convenient and quick. In addition, an anti-skid module is set at the bottom end of the stepladder, and the stepladder has an anti-skid edge that can fully fit with the ground in the unfolded state, thereby increasing the contact area, improving friction, and having better anti-skid performance.

[0031] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. A telescopic stepladder, comprising a frame A and a frame B; the top of the frame A is hingedly connected to the top of the frame B; characterized in that: The frame A and the frame B both include telescopic side rods and pedals; The telescopic side rods have a pair and are arranged parallel to each other. The telescopic side rods include a plurality of side rod units nested and connected in the axial direction, and adjacent side rod units can be telescopically adjusted in the axial direction; the side rod units are provided with stop holes that cooperate with the pedals; The pedal is arranged between two telescopic side rods parallel to each other, and the end of the pedal is nested on the side rod unit. An adjustable stop module is arranged near the end of the pedal. The stop module is embedded in the stop holes on the two side rod units to realize the stop locking between adjacent side rod units, or the stop module is withdrawn from the stop holes on the side rod units to realize the telescopic adjustment between adjacent side rod units. The side of the frame A near the top is connected to the side of the frame B near the top through a protective rod, and the two ends of the protective rod are respectively hinged on the frame A and the frame B; the protective rod is a two-section structure and is hingedly connected by a hinge pin, and can rotate around the axis of the hinge pin; The top of the frame A and the frame B are both horizontally provided with a top pedal, and an anti-skid support plate extends horizontally on the edge of the top pedal. The side edge of the anti-skid support plate on the top of the frame A is movably connected with the side edge of the anti-skid support plate on the top of the frame B via a hinge; anti-skid stripes are provided on the upper surface of the anti-skid support plate.

2. A telescopic stepladder according to claim 1, characterized in that: A U-shaped slot is provided on the bottom end of the frame A, and an anti-slip module is arranged in the U-shaped slot; the anti-slip module includes a snap-in plate and an anti-slip block; the snap-in plate is a rectangular plate structure, and the snap-in plate is embedded in the U-shaped slot at the bottom end of the frame A; the two ends of the snap-in plate extend out of the outside of the side rod unit; the anti-slip block is nested on the end of the snap-in plate; the anti-slip block has an anti-slip edge with an obtuse angle, and the connection between the two anti-slip edges is located at the midline position of the bottom end of the snap-in plate, and a plurality of anti-slip grooves are provided at the bottom end of the anti-slip edge; the anti-slip block is provided with a connecting groove that easily accommodates the end of the snap-in plate to be embedded.

3. The telescopic stepladder according to claim 1, characterized in that: The bottom end of the frame B is nested and wrapped with an anti-slip rubber sleeve.

4. The telescopic stepladder according to claim 1, characterized in that: The pedal comprises a pedal housing and a nesting ring; the pedal housing is a rectangular shell structure, and is provided with openings at both ends of the pedal housing, and an adjustment opening is provided on one side; the nesting ring has a pair of holes respectively embedded at the two ends of the pedal housing opening, and a pin hole is provided on the nesting ring to communicate with the inner cavity of the pedal housing; The stop module is installed on the pedal housing near the end position, and the stop module includes a stop pin, a pin body guide sleeve, a spring and a drive block; the pin body guide sleeve is arranged in the pedal housing, and a spring is arranged in the pin body guide sleeve; a limiting step is arranged on the outer contour of the stop pin, one end of the stop pin is embedded in the pin body guide sleeve and connected to the spring, and the other end of the stop pin extends through the pin hole to the nesting ring; the limiting step on the stop pin is pressed against the outer side of the pin hole for limiting; the drive block is connected to the side of the stop pin and passes through the adjustment port on the pedal housing; the position of the stop pin is adjusted by toggling the drive block, so that the end of the stop pin can enter and exit the stop hole on the side rod unit.

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