CN2674056Y - telescopic ladder structure - Google Patents

Abstract

The utility model discloses a telescopic ladder structure aims at providing one kind and overlaps head and cavity ladder pipe and connect the external member card solid back again the adhesion be in the same place the stable difficult loose of packaging structure who takes off, connect the cladding that the external member has horizontal ladder board and avoid the rust to damage, easily receive to close and carry collection tensile assembly and have better security and life's telescopic ladder structure. The ladder comprises a plurality of ladder column units, transverse ladder boards and locking mechanisms; each section of ladder column unit consists of a hollow ladder tube, a sleeve head and a connecting sleeve member, and the pipe diameter of each hollow ladder tube is smaller as the position of each hollow ladder tube is higher, and the hollow ladder tubes are mutually telescopically sleeved; the locking mechanism is horizontally arranged, is connected with the connecting sleeve of the ladder column unit and is coated by the transverse ladder board; the sleeve head, the hollow ladder tube and the connecting sleeve are mutually clamped and fixed and then are bonded and fixed.

Description

telescopic ladder structure

technical field

The utility model relates to a telescopic ladder, more specifically to a telescopic ladder structure.

Background technique

The use of ladder frames has become an indispensable tool for people. For example, climbing appliances such as ladders or scaffolds are all effective tools for people to easily and quickly obtain or construct objects on high places.

A general ladder frame, as shown in Figure 1, the ladder frame 800 is composed of two ladder columns joined together. There are foot pads at the lower end of the ladder columns to prevent slipping, and there are pedals at an appropriate distance between them. font to use.

The traditional ladder frame is very inconvenient to carry due to its large overall volume, takes up a lot of space when retracted, and lacks flexibility in use.

Contents of the invention

The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, to provide a sleeve head, a hollow ladder tube and a connecting kit that are locked and fixed to each other and then glued together, the assembly structure is stable and not easy to loosen, and the connecting kit has The coating of the horizontal ladder plate avoids corrosion damage, and is a telescopic ladder structure that is easy to fold, carry, store, stretch, and assemble, and has good safety.

The telescopic ladder structure of the present utility model is realized through the following technical scheme. A telescopic ladder structure includes a plurality of ladder column units, horizontal ladder plates and locking mechanisms, and is characterized in that: the ladder column unit is composed of multiple Hollow ladder tubes with different pipe diameters are connected in series, wherein the upper end of each hollow ladder tube is sleeved with a ring sleeve and a connecting kit, and one end of the connecting kit is connected to a locking mechanism and a horizontal ladder plate arranged in a horizontal direction.

A telescopic ladder structure as described above is characterized in that: the annular sleeve head, the hollow ladder tube and the connecting sleeve are glued together. A telescopic ladder structure as described above, characterized in that: the annular sleeve head is respectively provided on the inner and outer ring walls, and is used to inject adhesive to make the mucus flow together with the hollow ladder tube and the connecting set aisle. A telescopic ladder structure as described above is characterized in that: the internal and external mucus flow channels of the annular sleeve are connected. A telescopic ladder structure as described above is characterized in that: a partial section of the upper end of the hollow ladder tube is formed with an annular groove, and the annular groove is fitted with the inner convex ring provided at the opposite position of the ring head. A telescopic ladder structure as described above, characterized in that: a partial section of the upper end of the hollow ladder tube is formed with a hemispherical tenon, and the hemispherical tenon and the hole provided at the opposite position of the ring sleeve are embedded in each other. combine. A telescopic ladder structure as described above is characterized in that the annular sleeve is provided with expansion joints. A telescopic ladder structure as described above, characterized in that: the connection kit has a socket pipe for covering the annular sleeve head, and an upright connecting plate arranged parallel to the pipe diameter direction of the socket pipe, and its pipe The peripheral edge is located between the parallel connecting plates and is provided with clamping and fixing holes. A telescopic ladder structure as described above, characterized in that: the locking mechanism includes a locking gate, a locking lever, a spring and a driving lever, wherein the two sides of the front end of the locking gate are hook ends for connecting with The upright connecting plates of the kit are interlocked, and the inner rear end has a spring groove for accommodating a spring, and a lock bar with one end against the spring. Connect to the fixing hole, the clamping fixing hole refers to the clamping fixing hole of the connecting kit inserted into the clamping fixing hole when the locking rod is moved forward when the driving lever is pivoted to the predetermined groove of the lock with the clamping shaft at its lower end. A telescopic ladder structure as described above, characterized in that: the lower end of the hollow ladder tube is provided with a buffer element, the buffer element is in the shape of a sleeve, and its upper end is fastened to the buttonhole of the hollow ladder tube by means of a hook In the middle, the outer periphery of the lower section is provided with an elastic sealing ring that maintains friction when in contact with the interior of the hollow ladder tube to reduce noise and cushion the collapse. A telescopic ladder structure as described above, characterized in that: the inside of the buffer element is covered with an adhesive film, and there is a hole on the adhesive film, the hole means that when the buffer element moves up and down, the air enters the adhesive film through the hole The chamber, the hole that promotes the cushioning effect.

Compared with the prior art, the telescopic ladder structure of the present utility model has the following beneficial effects:

1. In the telescopic ladder structure of the present utility model, the assembly structure in which the pulley, the hollow ladder tube and the connecting kit are clamped and fixed with each other and then glued together makes the telescopic ladder structure stable and not easy to loosen, and has better safety;

2. The connection kit is covered with a horizontal ladder plate to avoid corrosion damage;

3. Easy to fold, carry, collect, stretch and assemble.

Description of drawings

Fig. 1 is the perspective view of conventional ladder frame;

Fig. 2 is a perspective view of the utility model when it is folded;

Fig. 3 is a three-dimensional view of the utility model in use;

Fig. 4 is the three-dimensional exploded view of the ladder column unit and the transverse ladder plate of the present invention;

Fig. 5 is a perspective view and a partial sectional view of the combination of the ladder column unit and the transverse ladder plate of the present invention;

Fig. 6 is a combined sectional view of the ladder column unit and the transverse ladder plate of the present invention;

Fig. 7 is a sectional view of an embodiment of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

The telescopic ladder structure of the present utility model, as shown in Figure 2, the telescopic ladder 1 is in a retracted state, as shown in Figure 3, the telescopic ladder 1 is in an open state, and the telescopic ladder 1 includes a plurality of ladder column units 2, The horizontal ladder plate 3 and the locking mechanism 4 are ladder frames that rise step by step when they are unfolded and used, and are stacked on top of each other by the arrangement of the ladder column units with different pipe diameters when they are closed.

As shown in Figure 4, the ladder column unit 2 is composed of a hollow ladder tube 21, a sleeve head 22 and a connection kit 23. The sleeve head 22 is in the shape of a ring and is set on the outside of the upper end of the ladder tube 21, and a connection kit is set outside the sleeve head 22. 23. For the hollow ladder tube 21 of each ladder column unit, the higher the position, the smaller the diameter. The upper part of the hollow ladder tube 21 is formed with an annular groove 211, a hemispherical tenon 212 and a hole 213, and the lower part has a piercing hole. Hole 214; sleeve head 22 is provided with an inner convex ring 221, convex grain 222 and expansion joint 223 at the relative position of its upper section, and the bottom end of sleeve head 22 is provided with an outwardly protruding outer ring edge 224, and its inner and outer pipe walls are respectively A mucus flow channel 225, 226 is provided in the recess, and the inner and outer mucus flow channels 225, 226 are connected by a through hole 227. The top of the sleeve 22 is provided with an inner ring edge 228 (as shown in FIG. 6 ).

The connecting sleeve 23 has a socket pipe 231 which can cover the sleeve head, and an upright connecting plate 232 arranged parallel to the diameter direction of the socket pipe; the wall of the socket pipe 231 is provided with a relative fixing hole 233 , after it is inserted into the sleeve head 22, in addition to being tightly bonded to the sleeve head 22 by the adhesive, it can also be locked with screws; the peripheral edge of the tube is provided with a clamping fixing hole 234 between the parallel connecting plates.

The locking mechanism 4, as shown in Figure 4, and with reference to Figure 6, includes a locking gate 41, a locking bar 42, a spring 43 and a driving lever 44; the locking gate 41 has hook ends 411 on both sides of its front end, It can be engaged with the connecting plate 232 of the connection kit 23, and its internal rear end has a spring groove for accommodating the spring 43 (see Figure 5). One end of the lock lever 42 is pressed against the spring 43, and the other end is facing the connection kit. The clamping fixing hole 234 in the middle section is the mandrel 421 for the driving rod 44 to fork in. The driving rod is pivoted to the lock predetermined groove 412 with the clamping shaft 441 at its lower end, and the locking rod 42 is moved back and forth.

Referring to Fig. 5 at the same time, after the locking mechanism 4 is installed and positioned, the horizontal ladder plate 3 is sleeved on the outside of the locking mechanism 4, and locked to the upright connecting plate 232 of the connection kit by screws, and the lower end of the horizontal ladder plate 3 has a through hole. 31 stretches out for driving lever 44 lower ends.

The lower end of the hollow ladder tube 21 is provided with a buffer element 5, which is sleeve-shaped, and its upper end is hooked and fixed on the preset buttonhole 52 of the hollow ladder tube 21 by means of an outer hook 51. The elastic sealing ring 53 that maintains frictional force and reduces noise and buffers and folds when in contact with the inside of the ladder tube. As shown in Figure 6, an adhesive film 54 is provided inside it, and there are holes on the adhesive film 54 that air enters into the chamber in the adhesive film 54 to promote the buffering effect when the buffer element 5 moves up and down.

As shown in the figure, after the assembly is completed, since the bottom end of the hollow ladder tube is provided with a buffer element 5 and an elastic sealing ring 53, the contact buffer friction with the inner tube wall of the outer ladder tube can be increased to achieve the purpose of buffering the lifting; the upper end of the ladder tube is set The sleeve head 22 and the viscous flow channels 225 and 226 arranged on the inner and outer pipe walls are used for perfusion of adhesive to make it closely bonded to the ladder pipe 21 and the connecting kit 23, so the overall assembly is safe and stable, and the horizontal ladder plate can be lifted 3 is safe to use and the locking mechanism 4 is provided so that it is completely covered by the horizontal ladder plate 3, which has the functions of convenient control and avoiding damage caused by the infiltration of foreign objects.

When stretched, the lower piercing hole 214 of the inner hollow ladder tube is positioned by the locking bar 42 on the outer hollow ladder tube. When the locking bar 42 withdraws, the hollow ladder tube 21 will drop and close.

For the convenience of explanation, different figure numbers are used below. When closing, as shown in Figure 7, extend the lower end of the first layer of horizontal ladder plate 61 out of the driving rod 62 and turn clockwise to drive the locking rod 63 to withdraw from the clamping fixing hole and the piercing hole of the second layer of ladder tube, the second layer The second-layer ladder pipe 64 promptly falls down with the second-layer horizontal ladder plate 65 because of losing the retaining. When the second-layer horizontal ladder plate 65 falls to the point where the driving rod 66 at the lower end touches the first-layer horizontal ladder plate 61, The driving lever 66 rotates clockwise due to the force, and drives the locking lever 67 inside to withdraw from the clamping fixing hole, and the third-layer ladder pipe 68 and the third-layer horizontal ladder plate 69 fall down smoothly, and so on, all can be quickly completed. Ladder pipes and ladder plates are stacked and folded downwards.

To sum up, it can be seen that the telescopic ladder structure of the utility model has the effect of improving the safety of use, convenient and fast storage and use, and can improve the shortcomings of the ladder, but it has not been used publicly, which is in line with the provisions of the patent law , please approve.

It should be noted that the above descriptions are preferred specific embodiments of the present utility model. Within the scope not exceeding the spirit and concept of the present utility model, those skilled in the art can make various improvements and changes, all of which belong to this utility model. Protection scope of utility model.

Claims (11)

1. A telescopic ladder structure, including a plurality of ladder column units, horizontal ladder plates and locking mechanisms, characterized in that: the ladder column unit is composed of a plurality of hollow ladder tubes with different diameters connected in series, wherein each hollow The upper end of the ladder pipe is sleeved with an annular sleeve and a connecting kit, and one end of the connecting kit is connected to a locking mechanism arranged in a horizontal direction and a horizontal ladder plate. 2. The telescopic ladder structure according to claim 1, characterized in that: the annular sleeve, the hollow ladder tube and the connecting sleeve are bonded together. 3. The telescopic ladder structure as claimed in claim 1, characterized in that: said annular sleeve head is respectively provided with mucus for injecting adhesive into the inner and outer ring walls so that it can be bonded together with the hollow ladder tube and the connection kit. flow channel. 4. The telescopic ladder structure according to claim 1, characterized in that: the inner and outer mucus flow passages of the annular sleeve are connected. 5. The telescopic ladder structure according to claim 1, characterized in that: a partial section of the upper end of the hollow ladder tube is formed with an annular groove, and the annular groove and the inner convex ring arranged at the opposite position of the ring sleeve are mutually connected. Chimeric. 6. The telescopic ladder structure according to claim 1, characterized in that: a partial section of the upper end of the hollow ladder tube is formed with a hemispherical tenon, and the hemispherical tenon and the hole provided at the opposite position of the ring sleeve fit each other. 7. The telescopic ladder structure according to claim 1, characterized in that: said annular sleeve is provided with expansion joints. 8. The telescopic ladder structure according to claim 1, characterized in that: the connecting kit has a socket pipe for covering the annular sleeve head, and an upright connecting plate arranged parallel to the radial direction of the socket pipe, The peripheral edge of the tube is located between the parallel connecting plates and is provided with clamping and fixing holes. 9. The telescopic ladder structure according to claim 1, characterized in that: said locking mechanism includes a locking gate, a locking lever, a spring and a driving lever, wherein both sides of the front end of the locking gate are hook ends, For the interlocking of the upright connecting plate of the connecting kit, the inner rear end has a spring groove for accommodating the spring, and a lock bar with one end to withstand the spring. There is a clamping and fixing hole, and the clamping and fixing hole refers to the clamping and fixing hole that the driving lever is pivoted to the predetermined groove of the lock gate with the clamping shaft at its lower end, and is inserted into the clamping and fixing hole of the connecting kit when the locking lever is moved forward. 10. The telescopic ladder structure according to claim 1, characterized in that: the lower end of the hollow ladder tube is provided with a buffer element, the buffer element is in the shape of a sleeve, and its upper end is fastened to the hollow ladder tube by means of a hook. In the button hole, the outer periphery of the lower section is provided with an elastic sealing ring to maintain friction when in contact with the inside of the hollow ladder tube, so as to reduce noise and cushion the collapse. 11. The telescopic ladder structure as claimed in claim 10, characterized in that: the inside of the buffer element is covered with a film, and there is a hole on the film, the hole means that when the buffer element moves up and down, the air enters the glue through the hole. Compartments within the membrane, pores that promote a buffering effect.

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