One-key opening and closing type high-stability extension ladder

Abstract

The utility model discloses a one-key opening and closing type high-stability extension ladder which comprises two first extension supporting rods which are oppositely arranged, first mounting seats are arranged at the tops of the two first extension supporting rods, manual clutch control pieces are arranged on the two first mounting seats and connected with a driving end, and the driving end is connected with a second extension supporting rod. A first pedal is arranged between the two first mounting seats, a travel groove is formed in the bottom surface of the first pedal, and the two driving ends protrude out of the travel groove; a plurality of second telescopic supporting rod units are further included, the first pedals are obliquely arranged relative to the first telescopic supporting rods, and the second pedals and the first pedals are vertically arranged in parallel at intervals; a reinforcing connecting base is arranged at the bottom end of the first telescopic supporting rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of ladders, and particularly relates to a one-key opening and closing type telescopic ladder with high stability. Background Art

[0002] When each section of the support rod of the existing one - shaped telescopic ladder on the market is pulled out, it needs to be manually unlocked, and the operation is rather troublesome. Moreover, due to the long length of the one - shaped telescopic ladder, the overall stability is not good. In addition, the ladder pedal is vertically arranged with the two - side support rods, and when the one - shaped telescopic ladder is in use, it is placed obliquely, which causes the ladder pedal to tilt and the use is unstable. Content of the Utility Model

[0003] Aiming at the problems mentioned in the background art, the purpose of the utility model is to provide a one - key opening and closing type telescopic ladder with high stability to solve the problems mentioned in the above background art.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A one - key opening and closing type telescopic ladder with high stability includes two relatively arranged first telescopic support rods. At the tops of the two first telescopic support rods, there are first mounting seats. On each of the two first mounting seats, there is a manual clutch control part. The manual clutch control part is connected to the driving end. Between the two first mounting seats, there is a first pedal. A travel groove is formed on the bottom surface of the first pedal, and the two driving ends protrude from the travel groove. It also includes a number of second telescopic support rod units. The second telescopic unit includes two relatively arranged second telescopic support rods. At the tops of the two second telescopic support rods, there are second mounting seats. On each of the two second mounting seats, there is an automatic clutch control part. The second telescopic support rods in two adjacent second telescopic support rod units are telescopically connected to each other, and the contraction and expansion of the two adjacent second telescopic support rods are controlled by the automatic clutch control part. The second telescopic support rod at the bottommost end is telescopically connected to the top end of the first telescopic support rod through the manual clutch control part. Between the two second mounting seats, there is a second pedal. The first pedal is inclined relative to the first telescopic support rod, and the second pedal and the first pedal are arranged in parallel at an upper - lower interval. A strengthened connection base is arranged at the bottom end of the first telescopic support rod.

[0006] Preferably, the first mounting seat includes a first set of main bodies, the side walls of the first set of main bodies extend to form a first mounting cavity, the side walls of the first mounting cavity are provided with a first limiting groove, the manual clutch control component includes a first fixing plate, the first fixing plate is clamped and connected with a first locking rod, the first locking rod is placed in the first mounting cavity, and also includes a first positioning rod, one end of the first positioning rod is formed into a hook shape, clamped between the first locking rod and the first fixing plate and hooked on the first locking rod, and the other end is placed in the first limiting groove, a first fixing sleeve is provided on the rear end of the first mounting cavity, and the rear end of the first locking rod The end is sleeved in the first fixed sleeve, and also includes a first spring member, which is sleeved on the first locking rod, one end of which is abutted on the first fixed plate, and the other end is abutted on the first fixed sleeve, and the driving end includes a first extension rod formed by extending from the rear end of the first locking rod, and a shift rod is arranged on the end of the first extension rod, and the outer end of the shift rod extends out of the travel groove and is formed with a shift button part, the front end of the first locking rod passes through the first telescopic support rod and the second telescopic support rod to be locked, and the locking rod is pulled by the shift button part to realize the unlocking of the first telescopic support rod and the second telescopic support rod after being locked.

[0007] Preferably, the structure of the second mounting seat is consistent with the structure of the first mounting seat, including a second set body that is sleeved with the second telescopic support rod, the side wall of the second set body extending to form a second mounting cavity, the side wall of the second mounting cavity being provided with a second limiting groove, the automatic clutch control component including a second fixing plate, the second fixing plate being clamped and connected with the second locking rod, the second locking rod being placed in the second mounting cavity, and also including a second positioning rod, one end of the second positioning rod being connected to the second fixing plate, and the other end being placed in the second limiting groove, a second fixing sleeve being provided on the rear end of the second mounting cavity, the rear end of the second locking rod being sleeved in the second fixing sleeve, and also including a second spring member, the second spring member being sleeved on the second locking rod, one end of which abuts against the second fixing plate, and the other end abuts against the second fixing sleeve, a window being opened on the bottom surface of the second pedal, an arc-shaped guide portion being formed on the front end of the second fixing plate, and the side walls of the first fixing sleeve and the second fixing sleeve both extending upward to form an unlocking protrusion.

[0008] After the first locking rod in the manual clutch control component is pulled out, the second telescopic support rod above the first telescopic support rod can be pressed down. Subsequently, when the second mounting seat is close to the first mounting seat, the unlocking protrusion on the first mounting seat extends into the window and pushes the second fixing plate backwards through the arc-shaped guide portion of the second fixing plate, thereby unlocking the second telescopic support rod, so that the second telescopic support rod is retracted into the first telescopic support rod, and the same is true for the subsequent extension and retraction of the second telescopic support rod in each second telescopic support rod unit.

[0009] Preferably, the reinforcing connection base includes a middle connecting rod. Two cavities are formed inside the middle connecting rod. Telescopic extension rods are arranged in both cavities. The two telescopic extension rods can extend telescopically towards both sides of the middle connecting rod respectively, and fixing feet are arranged at the outer ends of the two telescopic extension rods.

[0010] Preferably, a connecting foot is arranged at the bottom of the first telescopic support rod. An embedding groove is formed on the connecting foot. Both ends of the reinforcing connection base are fixed in the embedding groove. Correspondingly, a notch for the reinforcing connection base to pass through is formed on the side of the first telescopic support rod.

[0011] In summary, the utility model mainly has the following beneficial effects:

[0012] In this application, by setting a manual clutch control part and an automatic clutch control part, one-key opening and closing can be realized. In addition, the driving end is installed on the bottom surface of the first pedal to prevent accidental touch and improve the use safety. And a reinforcing connection base is arranged at the bottom end of the first telescopic support rod, improving the stability of the ladder during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a partial structural schematic diagram of the utility model;

[0015] Figure 3 is a schematic structural diagram of the manual clutch control part of the utility model;

[0016] Figure 4 is a schematic structural diagram of the automatic clutch control part of the utility model;

[0017] Figure 5 is a schematic exploded view of the manual clutch control part of the utility model;

[0018] Figure 6 is Figure 5 the installation schematic diagram of the first positioning rod in

[0019] Figure 7 is the exploded structural schematic diagram of the automatic clutch control part;

[0020] Figure 8 is the exploded structural schematic diagram of the reinforcing connection base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] Reference Figures 1-8 , a one-key opening and closing type telescopic ladder with high stability described in this embodiment includes two relatively arranged first telescopic support rods 1. A first mounting seat 2 is provided at the top of the two first telescopic support rods. Manual clutch control parts are provided on both of the first mounting seats. The manual clutch control parts are connected to the driving ends. A first pedal 3 is provided between the two first mounting seats. A travel groove 4 is formed on the bottom surface of the first pedal. The two driving ends protrude from the travel groove; it further includes a plurality of second telescopic support rod units 5. The second telescopic unit includes two relatively arranged second telescopic support rods 6. Second mounting seats 7 are provided at the tops of the two second telescopic support rods. Automatic clutch control parts are provided on both of the second mounting seats. The second telescopic support rods in two adjacent second telescopic support rod units are telescopically connected to each other, and the contraction and expansion of the two adjacent second telescopic support rods are controlled by the automatic clutch control parts. The second telescopic support rod at the bottommost end is telescopically connected to the top end of the first telescopic support rod through the manual clutch control part. A second pedal 8 is provided between the two second mounting seats. The first pedal is inclined relative to the first telescopic support rod. The second pedal and the first pedal are arranged in parallel at an upper and lower interval; in this way, the pedal can be kept horizontal when the ladder is inclined, improving the stability of the ladder during use. A strengthened connection base 9 is provided at the bottom end of the first telescopic support rod.

[0024] Specifically, the first mounting seat includes a first set of main bodies 10, the side walls of the first set of main bodies extend to form a first mounting cavity 11, the side walls of the first mounting cavity are provided with a first limiting groove 12, the manual clutch control component includes a first fixing plate 13, the first fixing plate is clamped and connected with a first locking rod 14, the first locking rod is placed in the first mounting cavity, and also includes a first positioning rod 15, one end of the first positioning rod is formed into a hook shape, clamped between the first locking rod and the first fixing plate and hooked on the first locking rod, in particular, the first fixing plate is concave to form a groove 16 for placing the end of the first positioning rod 15, and the other end is placed in the first limiting groove 12, the rear of the first mounting cavity A first fixing sleeve 17 is provided on the end, the rear end of the first locking rod is sleeved in the first fixing sleeve, and also includes a first spring member 18, which is sleeved on the first locking rod, one end of which is abutted against the first fixing plate, and the other end is abutted against the first fixing sleeve, and the driving end includes a first extension rod 19 formed by extending from the rear end of the first locking rod, and a shift rod 20 is provided on the end of the first extension rod, the outer end of the shift rod extends out of the travel groove and is formed with a shift button portion 21, the front end of the first locking rod passes through the first telescopic support rod and the second telescopic support rod to be locked, and the first telescopic support rod and the second telescopic support rod are unlocked after being locked by pulling the locking rod by the shift button portion.

[0025] The structure of the second mounting seat is consistent with that of the first mounting seat, including a second set of main bodies 30 sleeved and connected with the second telescopic support rod, the side wall of the second set of main bodies extending to form a second mounting cavity 31, the side wall of the second mounting cavity is provided with a second limiting groove 32, the automatic clutch control member includes a second fixing plate 33, the second fixing plate is clamped and connected with a second locking rod 34, the second locking rod is placed in the second mounting cavity, and also includes a second positioning rod 35, one end of the second positioning rod is formed into a hook shape, clamped between the second locking rod and the second fixing plate and hooked on the second locking rod, in particular, the second fixing plate is concave to form a groove for placing the end of the second positioning rod, and the other end is placed in the second limiting groove, and the structure here is consistent with the installation structure of the above-mentioned first positioning rod 15;

[0026] A second fixing sleeve 36 is provided on the rear end of the second mounting cavity, and the rear end of the second locking rod is sleeved in the second fixing sleeve. It also includes a second spring member 37, which is sleeved on the second locking rod, one end of which abuts against the second fixing plate, and the other end abuts against the second fixing sleeve. A window 38 is opened on the bottom surface of the second pedal, and an arc-shaped guide portion 39 is formed on the front end of the second fixing plate. The side walls of the first fixing sleeve and the second fixing sleeve both extend upward to form an unlocking protrusion 40.

[0027] After pulling out the first locking rod in the manual clutch control member, the second telescopic support rod above the first telescopic support rod can be pressed down. Subsequently, when the second mounting seat approaches the first mounting seat, the unlocking protrusion on the first mounting seat extends into the window and pushes the second fixing plate backward through the arc-shaped guiding portion of the second fixing plate, thus unlocking the second telescopic support rod and enabling the second telescopic support rod to contract within the first telescopic support rod. The telescoping of the second telescopic support rod in each subsequent second telescopic support rod unit is also like this. In addition, both the first positioning rod and the second positioning rod are composed of two rods, and the two rods have different colors. In this embodiment, one is green and the other is red. After opening an observation hole on the pedal, the unlocking state of the ladder can be judged according to the different colors shown in the observation hole.

[0028] The strengthening connection base includes a middle connecting rod 41. Two cavities 42 are formed inside the middle connecting rod. Telescopic extension rods 43 are arranged in both cavities. The two telescopic extension rods can respectively telescope to both sides of the middle connecting rod. Fixed feet 44 are arranged at the outer ends of the two telescopic extension rods. A connecting foot 45 is arranged at the bottom of the first telescopic support rod. An engaging groove 46 is formed on the connecting foot. The two ends of the strengthening connection base are fixed in the engaging groove. Correspondingly, a notch 47 for the strengthening connection base to pass through is formed on the side of the first telescopic support rod.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A one-button opening and closing high-stability telescopic ladder, characterized by: The invention relates to a method of making the movable frame movable in a movable manner and a movable frame having a movable frame connected thereto, wherein the movable frame is movable in a movable manner and the movable frame is movable along the longitudinal axis of the movable frame. The movable frame is constructed so that the movable frame can be easily moved and the movable frame can be easily moved.

2. The one-button opening and closing high-stability telescopic ladder according to claim 1, characterized in that: The first mounting seat includes a first set of main bodies, the side walls of the first set of main bodies extend to form a first mounting cavity, the side walls of the first mounting cavity are provided with a first limiting groove, the manual clutch control component includes a first fixing plate, the first fixing plate is clamped and connected with a first locking rod, the first locking rod is placed in the first mounting cavity, and also includes a first positioning rod, one end of the first positioning rod is formed into a hook shape, clamped between the first locking rod and the first fixing plate and hooked on the first locking rod, and the other end is placed in the first limiting groove, a first fixing sleeve is provided on the rear end of the first mounting cavity, and the rear end sleeve of the first locking rod The first locking rod is connected to the first fixing sleeve and also includes a first spring member, which is sleeved on the first locking rod, one end of which is abutted against the first fixing plate, and the other end is abutted against the first fixing sleeve. The driving end includes a first extension rod formed by extending from the rear end of the first locking rod, and a shift rod is arranged on the end of the first extension rod. The outer end of the shift rod extends out of the travel groove and is formed with a shift button part. The front end of the first locking rod passes through the first telescopic support rod and the second telescopic support rod to be locked, and the locking rod is pulled by the shift button part to realize unlocking after the first telescopic support rod and the second telescopic support rod are locked.

3. The one-button opening and closing high-stability telescopic ladder according to claim 1, characterized in that: The structure of the second mounting seat is consistent with the structure of the first mounting seat, including a second set body that is sleeved with the second telescopic support rod, the side wall of the second set body extends to form a second mounting cavity, the side wall of the second mounting cavity is provided with a second limiting groove, the automatic clutch control component includes a second fixing plate, the second fixing plate is clamped and connected with the second locking rod, the second locking rod is placed in the second mounting cavity, and also includes a second positioning rod, one end of the second positioning rod is connected to the second fixing plate, and the other end is placed in the second limiting groove, a second fixing sleeve is provided on the rear end of the second mounting cavity, and the rear end of the second locking rod is sleeved in the second fixing sleeve, and also includes a second spring member, the second spring member is sleeved on the second locking rod, one end of which abuts against the second fixing plate, and the other end abuts against the second fixing sleeve, a window is opened on the bottom surface of the second pedal, an arc-shaped guide portion is formed on the front end of the second fixing plate, and the side walls of the first fixing sleeve and the second fixing sleeve both extend upward to form an unlocking protrusion.

4. The one-button opening and closing high-stability telescopic ladder according to claim 1, characterized in that: The reinforced connecting base includes a middle connecting rod, which has two cavities formed inside. Telescopic extension rods are arranged in the two cavities. The two telescopic extension rods can be respectively extended to both sides of the middle connecting rod, and fixed feet are arranged on the outer ends of the two telescopic extension rods.

5. The one-button opening and closing high-stability telescopic ladder according to claim 4, characterized in that: A connecting foot is provided at the bottom of the first telescopic support rod, and an embedding groove is formed on the connecting foot. Both ends of the reinforced connecting base are fixed in the embedding groove. Correspondingly, a notch for the reinforced connecting base to pass through is opened on the side of the first telescopic support rod.

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