TWM248902U - Improved structure of retractable ladder - Google Patents

Description

M248902 V. Creation instructions (1) [Technical field to which this creation belongs] This creation is about a telescopic ladder, which is reliable, easy to assemble, and has a more stable assembling structure. / 、 The improvement of the safety ladder of the telescopic ladder [previous technique] According to the press, the use of the ladder frame has become an inexhaustible equipment for people to climb, such as providing tools that can be used by people, such as the construction of ladders at high places. tool. ^ Easily and quickly obtain or ordinary ladder frames, as shown in Figure 1, connected to each other, with foot pads at the lower end of the ladder posts to prevent pedals at an appropriate distance. When used, they are A-shaped for the month. The use of / / space is provided with the traditional ladder frame separated. Due to its overall volume is ^ ^ convenient, the retractable space also needs to occupy a large space, lack of use; the purpose of carrying this is quite unreasonable. This resulted in the creation of Youben. Two shortcomings: study the way of improvement, and finally [contents of this creation] Multi-section = column "work": The purpose is to provide an improved structure of the telescopic ladder, which is composed of inin, connection kits, locking mechanisms and horizontal ladder plates. In order to pack, carry, store or stretch the user. Ladder tube: An improved structure of this kind of telescopic ladder, its connection kit and the hollow ", fixed and then fixed by adhesive, can be loosened for the purpose. For the improved structure of this kind of telescopic ladder created by the other locking machine 2 created by the hook, the connection package is designed to avoid rust damage due to being covered by the horizontal ladder.

-^ ----- M248902

Another purpose of creation. As for the detailed structure, application principle, function and effect of this creation, you can fully understand it according to the following description with reference to the drawings. [Multiple implementations of this creation] The retractable ladder 1 of this type of retractable ladder can be collapsed, or as shown in Figure 3, the column unit 2, the connection kit 3 and the horizontal ladder riser, when collapsed, By the ladders stacked on top of each other. The advanced structure, as shown in Figure 2, is shown in the extended state, which includes multiple 'plates'. When deployed, the high-column units are set with different tube diameters for each other. See Phases 4 and 5 for phases. As shown in the figure, each ladder column unit 2 is an inner ladder column unit 2a which is fitted with each other but has a small pipe diameter. The ladder column unit 2 has a middle-g shape, and the upper end is provided with a card hole 2 and a positioning hole 22. The lower section is provided with a through-hole 23 and a buckle hole 24. A stop ring 25 is provided at an appropriate height at the upper end of the through-hole 23. The connection kit 3 has a ring sleeve portion 31 and a shaft connection portion 32. The ring sleeve portion For the horizontal ground cover β, it is located at the upper end of the ladder post unit and is passed through by screws M to lock it to the column. There are several positioning mortises 34 in the interior. The tenon 34 is inserted into the card hole 21 of the ladder column unit for rapid assembly, and the inner wall of the tongue channel is provided with a viscous flow channel 35, and one end of the viscous flow channel 35 is provided with an injection hole 36 so as to inject an adhesive to make it adhere closely to the ladder column unit 2; And, it is provided with a through hole 30 which communicates with the internal channel 37 of the shaft connection portion 32; the shaft connection portion 3 2 ′ is integrally formed with the ring portion 3 1. , Inside the passage 37 through the front and rear, at the end of the channel 37 is provided with slots 38 for receiving the locking mechanism 4 is provided;

M248902 V. Creation instructions (3) The locking mechanism 4, as shown in the figure, includes a lock 41, a lock lever 4, 2, a spring 43, and a dial 44; the lock 41 is provided on each of its two wings. Insertion plates 41 i, 412 'The center is the sleeve 413' When it is inserted into the slot 38 of the shaft connection portion with the insertion plates 411, 412, the sleeve 413 is located on the channel 37 of the shaft connection portion; The spring 43 and the lock lever 42 are accommodated so that the end of the lock lever 42 abuts against the spring 43 and the other end is directly opposite the through hole 30 of the ring sleeve portion and the positioning hole 22 of the ladder column unit. The small-diameter mandrel 421 is for the dial key 44 to be dialed in. The dial key 44 is positioned at the bottom of the lower side of the tenon 441 into the reserved slot of the shaft joint. The fork-shaped dial arm 442 is inserted in one end. The mandrel 421 can be used to control the forward and backward movement of the lock lever 42. After the locking mechanism 4 is assembled into the shaft connection portion 32 and assembled and positioned, the lateral ladder plate 5 is sleeved outside the shaft connection portion 32. The hole 51 is used for extending the dial key ^ for dial control. A buffer element 6 is provided at the lower end of the hollow ladder pipe 21, and the buffer element 62 is cylindrical. The upper end of the hollow ladder pipe 21 is hooked to the buckle hole of the ladder column unit 2 by an outer hook 61. An elastic seal ring 62 is provided on the periphery of the lower section. Add friction to the ladder tube and reduce noise. i, as shown in Fig. 6, the inside of the film 63 is provided with a film 63 'the film 63 has holes on the surface, and is placed in a chamber that is slowly lowered into the air to promote = lower fruit ... and elasticity 2 As shown, the ladder column unit 2 has a buffer element 6 at the bottom end, which can be used for buffering and lifting. It is extremely safe and secure after assembly. It is tightly bonded and fixed, so it can be integrated, and it is easy to control and avoid foreign objects. brook

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Connection Kit 3 and Cross 2 5 :: Replacement

M248902 V. Creation Instructions (4) Enter the function that causes damage. · As shown in Figure 6, 'When the internal ladder column sheet ^ and the ladder column sheet = Γ the outside of the column has a slightly larger outer diameter, the second ^ 2 = at the inner convex ring 3U, the ladder column unit connection sleeve侔 Πϊ η The positioning hole 22 of the external ladder column unit, its = through-hole 30 of the kit, and the locking lever path, can be smoothly inserted and positioned when moving. Worry lock-like 42 moving away? The following is for easy explanation ’and is indicated by different drawing numbers. At the time of folding, such as the seventh-level ladder: single rotation, which drives the lock lever 72 to exit the second and the ground Γ is penetrated, the second-level ladder column unit 73 is lost due to the failure; the ladder plate 74 drops downwards. When the second layer of horizontal staircase 7: drop one / transverse staircase 76, the dial key 75 exits through the solid hole due to the lock lever 77 inside the force column unit. The plates are stacked and folded down. The decisive kit 3 is an improved structure of this kind of telescopic ladder that can be created with this ladder. Through the connection holes 21 „, a card body that provides quick assembly and positioning is provided tightly ΠΓ * 4 and the retaining ring 25 'plus mucus The setting of the flow channel 35 makes the whole unit 纟 41 σ solid, and the locking mechanism 4 is provided in the connection kit 3, which provides functions such as convenient installation, easy operation, and improved service life. As can be seen from the above, The modification of this kind of telescopic ladder 2 improves the safety of use, and the convenience and quickness of the use of the retractable ladder; ;;; Π = See the lack of the ladder, and it has not been seen in the public: I beg you to grant Zhunli, it is a virtue.

M248902

Page 9 M248902 Brief description of the drawings. Figure 1 is a perspective view of the ladder frame. Figure 2 is a folded perspective view of the creation. Figure 3 is a three-dimensional view of the creation of the creation. Figure 4 is a three-dimensional exploded view of the ladder column unit and the headboard of the creation. The sectional view of the combination of the stair column unit and the horizontal stair plate made by Taichi. Figure 7 is a sectional view of the embodiment of the creation. I: Telescopic ladder 2a: Inner ladder unit 4: Locking mechanism 21 Card hole 23 Piercing hole 25 Stop ring 2a2: Piercing hole 31 Ring sleeve portion 33 Screw 35 Mucus channel 37 Channel 3ll: Convex ring 42: Lock Rod 44: Dial key 2: Ladder post unit 3: Connection kit 5: Lateral ladder 22: Positioning hole 24: Buckle hole 2 a I: Stop ring 30: Through hole 32: Shaft joint 34: Positioning tongue 36: Glue injection Hole 38: Slot 41: Lock 43: Spring 4ll, 4 I2: Insertion plate

Page 10 M248902 Brief description of the drawings 413: Sleeve 421: Mandrel 441: Tenon 442: Dial arm 51 Through hole 6: Cushioning element 61 Hook 62 Elastic seal 63 Adhesive film 71 First layer dial key 72 Lock lever 73 Second-tier ladder column unit 74 Second-tier transverse ladder plate 75 Dial key 76 First-tier transverse ladder plate 77 Lock bar 78 Third-tier ladder column unit 79 Third-tier transverse ladder plate 800: ladder frame

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Claims (1)

M248902 ----- 6. Scope of patent application 2 An improved structure of a telescopic ladder, including most ladder column units, three-piece solid-fixing mechanism and horizontal ladder plate, among which each ladder column unit is a hollow ladder tube, and different official diameters of the department, It can be sleeved and stretched with each other. The upper end is provided with a horizontal two connection kit, which is provided with a locking machine to cover the ladder board inside the connection kit. 1 | Feng 撗 2 · If the improved structure of the telescopic ladder in the first scope of the patent application, A head Ϊ 吏, and then borrow the viscous flow channel formed inside the connection kit; i / main adhesive to make it tightly adhered and fixed . , Irrigation 3: If the improved structure of the telescopic ladder in item 1 of the scope of patent application, ίΐϊί = At the junction of the connection kit, there are positioning holes for the connection kit; = 2: The locking mechanism inside the transfer kit The locking rod can be 4. If = please call for the improved structure of the telescopic ladder in item 3 of the patent = the connection kit is to set the locking mechanism with its ring part and the ladder column unit 轴 shaft, intermediate weight.乂 Pregnant is connected by 4 groups. For example, the locking mechanism described in the improved structure of the telescopic ladder in item 4 of the patent scope is a locking brake inserted into the vehicle joint, so that the lock is located on the passage of the shaft joint. A spring and a locking rod are arranged in the sleeve, so that the through hole of the shaft connection portion is located in the positioning hole of the ladder column unit. Dry ^ 6. If the scope of patent application is 5th; the improvement of the extension and contraction of the staff: the locking mechanism is to use the dial with a fork-shaped toggle arm to control the forward and backward movement of the lock lever 7. If the scope of patent application is W telescopic ladder The improved structure includes the following: 6. The lower part of the ladder column unit described in the scope of the patent application is: Extending and using 胄 for external & The improved structure of Dizhu early 70 can penetrate the improved structure of the telescopic ladder that fixes the fixed item hole. The large retaining ring has an outer diameter slightly different from that of the outer ladder unit.蛊: When used in relative stretching, the retaining ring can be used to push against the fixing element ring of the external ladder column unit to ensure that it is the right one. The position of the Ping'er position hole, the through hole and the lock rod are in the correct phase. 9. If the improved structure of the telescopic ladder of item 1 of the patent application scope, a cushion element is provided at the lower end of the ladder column single / 0, the cushion element It is slightly sleeve-shaped. An elastic seal ring is arranged on the periphery of the lower section to maintain friction when contacting the inside of the ladder tube, and to reduce noise and buffer collapse. 10 · The improved structure of the telescopic ladder according to item 9 of the scope of patent application, wherein the buffer element is provided with an adhesive film inside, and a hole is formed on the adhesive film. When the buffer element moves up and down, air can enter through the hole A compartment inside the film to promote cushioning effect.