TWM538540U - Steering retractable working ladder - Google Patents

Description

Steering telescopic work ladder

The present invention relates to the technical field of a work ladder structure for construction or use by a general household or a professional worker, and more particularly to a steering telescopic work ladder.

People often suffer from the lack of working height due to the height limit of the body, which makes the efficiency of the project work lower. As a general home or professional worker, it is necessary to install, paint or repair the lamps at high places, or hydropower, In industries such as paints and upholstery, in order to carry out operations such as climbing or trimming, it is usually achieved by an A-shaped work ladder commonly known as a horse chair.

The conventional A-shaped work ladder has four ladder legs, each of which forms a ladder frame, and a plurality of pedals are arranged in parallel between the ladder legs of each ladder frame, and the ladder legs adjacent to each ladder frame A link is respectively provided as a separate holder, and the top side edges of each ladder frame are connected by a opening and closing device. In use, only the two ladder frames need to be separated, and the connecting rod is flattened and fixed, and the user can step on the pedal to board the A-shaped work ladder to work to compensate for the lack of working height.

Moreover, professional users of work ladders are generally used. In order to facilitate the use during construction, they can also directly sit on the A-shaped work ladder and use the change of the center of gravity to make the work ladder open and close continuously. The horizontal displacement to speed up the work can be said to be quite practical. However, such A-shaped work ladder structure still has some drawbacks in use:

1. Due to the fixed height of the A-shaped work ladder, it is often necessary to make the A-shaped work ladder form insufficient or too high due to the construction height of different heights. It is dangerous to have a high toe on the ladder, and it is inconvenient to bend over when the height is too high.

2. If the height of the A-shaped work ladder is increased, the inconvenience of carrying and storing may be caused by the extension of the volume length.

Therefore, how to deal with the above-mentioned fixed-width A-shaped work ladders, which are dangerous due to lack of height and thus high in height, are inconvenient to use, and the height of the work ladder is increased due to the extension of the volume length. The improvement of the creators, such as the inconvenience of use and the inconvenience of storage, is the difficult point to solve in this case.

The main purpose of the present invention is to provide a steering telescopic work ladder, comprising two ladder frames respectively comprising a plurality of ladder legs, a plurality of fixed pedals connecting the two ladder legs, and two movable ladder legs and a plurality of detachable pedals The two stepped legs of each ladder frame are respectively provided with a vertical through hole at the opposite end of the socketed movable step. The two ladder frames are relatively abutted at the corresponding stepped legs with a pivot hole and have a bolt. The pivoting group consisting of two turning guides and a nut is pivoted, and the two ladders of the pivoting group have a lateral displacement of the opening and closing swing, and the arc guiding surface of the turning guide is relatively tightly guided to form a slight angle of the two ladders. The yaw steering operation is flexible and provides progressive progress in use.

The second purpose of the present invention is to provide a steering retractable work ladder, wherein the limit components at the two ends of each detachable pedal are assembled to the two movable ladders when the two movable step legs of the two ladder legs are outwardly extended. The foot is fixed for extending the length and height according to the work requirement, and the two movable step legs can be contracted inwardly to the two ladder legs for shortening the volume length Degree and height are good for carrying and storage.

In order to achieve the above purpose and effect, the present invention has a steering telescopic work ladder, including two ladder frames, respectively comprising two ladder legs with longitudinal ground support, a plurality of fixed pedals connecting the two ladder legs, and two movable ladders. a foot and a plurality of detachable pedals, wherein the two movable step legs of each ladder frame are respectively sleeved at a ground end of the two ladder legs to form a combination of outward extension and inward contraction, and each ladder foot tube has a fixed ladder foot respectively a limit component, each detachable pedal is respectively provided with a limit component at both ends and is arranged on two ladder legs under the fixed pedals of each ladder frame, and the two ladder legs of each ladder frame are on the opposite end of the socket of the movable ladder A pivot hole is disposed respectively, and the two ladder frames are oppositely supported by the pivot holes in the corresponding step legs, and are pivotally combined by a pivoting group to form a combination of relative angular oscillations.

The pivoting group includes a two-turn guide piece and a nut having a head bolt and a set bolt, and the two-turn guide piece is stacked and set in a pivot hole position of the step ladder tube corresponding to the two ladder frame, The two-turn guide sheets respectively have a flat surface and abut against the ladder legs corresponding to the two ladder frames, and the two-turn guide sheets respectively have an arc guide surface and the arc guide surfaces of each other are relatively abutted, and the bolts pass through the two ladders. The pivot hole of the ladder leg tube and the second turn guide piece and the nut are assembled by the end screw. The head and the nut of the bolt force the two ladder leg tube to clamp the arc guide surface of the second turn guide piece relatively tightly. The pivoting of the bolt supports the lateral displacement of the opening and closing swing, and the arc guiding surface of the turning guide forms a slight angular yaw steering operation relative to the guiding two ladders.

The limiting component at each end of each detachable pedal is fixed to the two movable step legs when the two movable step legs of the two ladder legs are extended outward for extending the length and height.

According to the above description of the present invention, a further technical feature of the present invention is that each fixed pedal is arranged in parallel with two ladder legs of the ladder frame, and each ladder foot tube is solid. A plurality of limit slots for detachable pedals are arranged under the fixed pedals.

According to the above description of the present invention, a further technical feature of the present invention is that each detachable pedal is arranged in parallel with two movable step legs of the ladder frame, and each movable step foot is provided with a plurality of limit slots for arranging the detachable pedals.

According to the above description of the present invention, a further technical feature of the present invention is that the pivoting group comprises two bolts respectively arranged between the head of the bolt and the step tube and the bolt between the nut and the step tube. .

According to the above description of the present invention, a further technical feature of the present invention is that one end of each stepped foot tube is provided with a thickened reinforcing end, and one end of each step foot tube is connected to the movable step foot. A slip sleeve, the sleeve of the slip sleeve is set at the reinforcing end.

According to the above description of the present invention, a further technical feature of the present invention is that each of the opposite ends of each of the movable step foot sleeves is sleeved with a slip-slip sleeve, and each of the limit assemblies has a threaded section and a rotation. Handle.

(10) ‧‧‧With steering telescopic ladder

(1) ‧‧‧ ladder

(11) ‧‧‧Ladder tube

(111) (131)‧‧‧ Limit slots

(112) ‧ ‧ reinforced end

(113) ‧‧‧Sleeve sleeves

(114) ‧‧‧ pivot

(12)‧‧‧Fixed pedals

(13) ‧‧‧ activities

(132) ‧‧ ‧ slip foot cover

(14) ‧ ‧ detachable pedal

(15) ‧‧‧Limit components

(151)‧‧‧Thread segments

(152)‧‧‧Rotating the handle

(2) ‧‧‧ pivot group

(21)‧‧‧ bolts

(22) ‧‧‧Transfer guide

(221) ‧ ‧ flat joints

(222)‧‧‧Arc guide

(23)‧‧‧ Nuts

(24) ‧‧‧shims

The first picture is a three-dimensional combination diagram of the creation.

The second picture is a schematic plan view of the combination of the creation.

The third figure is a three-dimensional exploded view of the creation.

The fourth figure is a three-dimensional schematic diagram of the two movable step legs of the two-legged foot tube extending outward and fixed by the limiting component.

The fifth figure is a three-dimensional schematic diagram of the detachment of the stepped legs at both ends of the detachable pedal and the assembly of the movable ladder legs.

The sixth picture shows the stereoscopic display of the two ends of each detachable pedal on the movable step foot. intention.

The seventh figure is a schematic cross-sectional view of the sixth line VII-VII.

The eighth figure shows the steering operation of the arc guide surface of the turning guide piece which is relatively tightly guided to guide the two angles of the two ladders.

The ninth figure is a three-dimensional schematic view of the end of each step of the ladder foot tube sleeve with a thickened reinforcing end and a sleeve sliding sleeve.

In order to achieve the above-mentioned purpose and effect, and the technical means and structure adopted, the present invention will be described in detail with reference to the embodiments of the present invention.

Please refer to the first to ninth drawings for a steering telescopic work ladder (10), comprising: two ladder frames (1), respectively comprising two ladder legs (11) with longitudinal ground support, connecting the two The plurality of fixed pedals (12) of the ladder foot tube (11), and the two movable step legs (13) and the plurality of detachable pedals (14), and the two movable step legs (13) of each ladder frame (1) are respectively at the two steps The ground end of the tube (11) is sleeved to form a combination of outward extension and inward contraction, and each step tube (11) has a limit component (15) for fixing the movable step (13), each detachable The pedals (14) are respectively provided with limit assemblies (15) at both ends and are arranged on the two ladder legs (11) under the fixed pedals (12) of each ladder frame (1), and the two ladder legs of each ladder frame (1) The tube (11) is respectively provided with a vertical through hole (114) at the opposite end of the socket movable step (13), and the two ladder frame (1) is pivoted at the corresponding step tube (11) (114) Relatively abutting and pivoting with a pivotal group (2) to form a combination of relative angular oscillations.

The pivoting group (2) comprises a bolt (21) having a head and a second turning guide (22) and a nut (23) of the set bolt (21), and the two turning guides (22) are stacked And the set is at the position of the pivot hole (114) of the ladder leg (11) corresponding to the two ladder frames (1), and the two turn guides (22) Each has a flat surface (221) and abuts against the ladder tube (11) corresponding to the two ladder frames (1), and the two rotation guide sheets (22) respectively have an arc guiding surface (222) and an arc guide of each other The face (222) is relatively abutted, and the bolt (21) passes through the pivot hole (114) of the stepped leg tube (11) of the two ladder frame (1) and the two turn guide pieces (22) and passes through the end screw group. The nut (23), and the head of the bolt (21) and the nut (23) force the two ladder legs (11) to clamp the relatively tight pivotal joint of the arc guide surface (222) of the second turn guide (22). The bolt (21) supports the two ladder frames (1) to have a lateral displacement of the opening and closing swing, and the arc guiding surface (222) of the turning guide (22) forms a slight angle with respect to the tight guiding two ladders (1). Yaw steering operation.

The limiting component (15) at each end of each detachable pedal (14) is assembled to the two movable step legs (13) when the two movable step legs (13) of the two ladder legs (11) are outwardly extended. Fixed to extend the length and height.

The foregoing is the main technical feature of the present embodiment, which corresponds to the content of the first item of the patent application scope of the present application, and the purpose and implementation form of the present invention are known in detail, and the technical features described in the remaining subsidiary patent scopes are The detailed description or additional technical features of the first content of the patent application scope, and not to limit the scope of the first paragraph of the patent application scope, it should be noted that the first item of the patent application scope of the present application does not necessarily include the scope of the remaining subsidiary patents. Technical characteristics.

In the above first to ninth drawings, the fixed pedals (12) are arranged in parallel with two ladder legs (11) of the ladder frame (1), each stepped leg. The tube (11) is provided with a plurality of limiting slots (111) for arranging the detachable pedals (14) under the fixed pedals (12). Secondly, each detachable pedal (14) is arranged in parallel with two movable step legs (13) of the ladder frame (1), and each movable step foot (13) is provided with a detachable pedal (14) limiting slot (131). . Moreover, the pivoting group (2) comprises two spacers (24) respectively arranged between the head of the bolt (21) and the step tube (11) and the nut (23) and the step tube (11). Bolts (21). In addition, each step tube (11) is socketed One end of the movable step (13) is provided with a thickened reinforcing end portion (112), and one end of each stepped leg tube (11) is sleeved with a sliding sleeve (113), which is non-slip A sleeve (113) is sleeved at the reinforcing end (112). Finally, the opposite ends of the movable step legs (13) are respectively sleeved with a slip-slip sleeve (132), and each of the limit assemblies (15) has a threaded section (151) and a rotation Handle (152).

As shown in the fourth to sixth figures, each of the detachable pedals (14) of the present invention has a detachable pedal (14) which is detachably mounted by a limiting component (15) at both ends. 14) The set is arranged on the limit groove (111) of the two ladder leg (11), so that the two movable step legs (13) of each ladder frame (1) can be connected to the ground end of the two ladder leg (11) Length change operation for outward extension or inward contraction; therefore, when it is necessary to extend the length and height, the two movable step legs (13) are extended outward, and each detachable pedal (14) is limited at both ends. The component (15) is fixed to the limiting slot (131) of the two movable step legs (13) for use.

On the contrary, after the construction is completed, the detachable pedals (14) are removed and the detachable pedals (14) are set on the two ladders by the limit components (15) at both ends. a limiting groove (111) of the foot tube (11), and the two movable step legs (13) are inwardly contracted to the two stepped legs (11), as shown in the first figure, for shortening the volume length and height Conducive to carrying and storage.

As shown in the sixth to eighth figures, the present invention has the two pivoting guides (22) stacked by the pivoting group (2) and the set of the ladder legs (11) corresponding to the two ladders (1). Positioning of the pivot hole (114), the two turning guide pieces (22) respectively have a flat surface (221) and abut against the ladder leg tube (11) corresponding to the two ladder frames (1), and the two turning guide pieces (22) Each has an arc guiding surface (222) and the arc guiding surfaces (222) of each other are relatively abutting, and the bolt holes (21) pass through the pivot holes (114) of the ladder legs (11) of the two ladder frames (1). And the second turning guide piece (22) and the nut (23) is screwed out through the end, the head of the bolt (21) and the nut (23) forcing the two ladder legs (11) to force the two-turn guide piece (22) arc The guiding surface (222) is relatively tightly pivoted; accordingly, the bolt (21) supports the two ladder frames (1) to have a lateral displacement of the opening and closing oscillation, as indicated by the arrow at the lower end of the ladder frame (1) on the right side of the sixth figure. , can be moved outward with the left ladder frame (1) as a fulcrum; and the arc guiding surface (222) of the turning guide piece (22) forms a slight angular yaw steering relatively close to the guiding two ladder frame (1) The operation, as shown by the hollow arrow at the lower end of the ladder frame (1) on the right side of the sixth and eighth diagrams, can be yawed with the left ladder frame (1) as a fulcrum.

As described above, the combination of the creation structure can truly break through the difficulties and shortcomings of the current work ladder structure and use, and achieve the following advantages:

1. The head and nut (23) of the bolt (21) force the step tube (11) of the two ladder frame (1) to clamp the arc guide surface (222) of the second turn guide (22) relatively tightly. The pivoting, and the pivotal two ladders (1) have a lateral displacement of the opening and closing oscillation, and the arc guiding surface (222) of the turning guide (22) forms a slight angular deviation relative to the tight guiding two ladders (1) The steering operation of the pendulum.

2. The limiting component (15) at each end of each detachable pedal (14) is assembled to the two movable step legs (13) when the two movable step legs (13) of the two ladder legs (11) are extended outward. Fixed to extend the length and height of the work, and flexible to achieve the progressive use.

3. The detachable pedals (14) can also be removed and the detachable pedals (14) can be set on the two ladder legs (11) by the limiting components (15) at both ends. The limiting groove (111) and the two movable step legs (13) are inwardly contracted to the two ladder legs (11) for shortening the length and height to facilitate carrying and storage.

The above description is only a preferred embodiment for explaining the present creation, and is not intended to impose any form limitation on the creation, so that any modification related to the creation in the same creative spirit is made. Or the changer, other types that can be implemented according to the same effect, should still be included in the scope of protection of this creative intention.

In summary, the creation "turns to a telescopic work ladder", in fact In terms of usability and cost-effectiveness, it is indeed in full compliance with the needs of industrial development, and the disclosed structural creation is also an unprecedented innovative structure. Therefore, its "novelty" should be undoubtedly considered, and the structure of this creation can be more conventional. It is more effective, so it is also "progressive". It fully complies with the requirements of the application requirements for new patents in China's Patent Law. It is a patent application in accordance with the law, and we would like to ask the bureau for an early review and affirmation.

(10) ‧‧‧Retractable work ladder

(1) ‧‧‧ ladder

(11) ‧‧‧Ladder tube

(12)‧‧‧Fixed pedals

(13) ‧‧‧ activities

(14) ‧ ‧ detachable pedal

(15) ‧‧‧Limit components

(2) ‧‧‧ pivot group

Claims (7)

A steering telescopic work ladder comprises: two ladder frames, respectively comprising two ladder legs with longitudinal ground support, a plurality of fixed pedals connecting the two ladder legs, two movable ladder legs and a plurality of detachable pedals, each The two movable step legs of the ladder frame are respectively sleeved at the ground end of the two ladder legs to form a combination of outward extension and inward contraction, and each ladder foot tube has a limit component for fixing the movable ladder foot, each detachable The pedals are respectively provided with limit components at both ends and are arranged on two ladder legs under the fixed pedals of each ladder frame, and the two ladder legs of each ladder frame are respectively provided with a vertically arranged one at opposite ends of the socket movable ladder legs. a pivot hole, the two ladder frames are oppositely supported by the pivot holes in the corresponding step legs, and are pivotally combined by a pivoting group to form a combination of relative angular oscillations; the pivoting group includes a bolt with a head and a set of bolts a two-turn guide piece and a nut, the two-turn guide pieces are stacked and set in a pivot hole position of the ladder step tube corresponding to the two ladder frames, and the two-turn guide pieces respectively have a flat surface and abut against the two ladder frames Corresponding ladder leg tube, and the two turn guide sheets respectively have The arc guide faces and the arc guide faces of each other are relatively abutted, and the bolt passes through the pivot hole of the ladder leg of the two ladder frames and the two turn guide pieces, and the nut is assembled through the end screw, the head and the screw of the bolt The cap forces the two ladder legs to clamp the pivotal joint of the two-turn guide piece to the relatively tight pivotal joint, the bolt supports the two ladder frame to have the lateral displacement of the opening and closing swing, and the arc guiding surface of the turning guide piece is relatively tightly guided The two ladder frames form a slight angular yaw steering operation; wherein the limit components at the two ends of each detachable pedal are fixed to the two movable ladder legs when the two movable step legs of the two ladder legs are outwardly extended, Used to extend the length and height. The steering retractable work ladder according to claim 1, wherein each of the fixed pedals is arranged in parallel with two ladder legs of the ladder frame, and each of the ladder legs is provided with a plurality of limit switches for detachable pedals under the fixed pedal. groove. The steering telescopic work ladder according to claim 1, wherein each of the detachable pedals is arranged in parallel with two movable step legs of the ladder frame, and each movable step foot is provided with a plurality of limit slots for arranging the detachable pedals. The steering retractable work ladder according to claim 2, wherein each of the detachable pedals is arranged in parallel with two movable step legs of the ladder frame, and each movable step foot is provided with a plurality of limit slots for arranging the detachable pedals. The steering retractable work ladder according to any one of claims 1 to 4, wherein the pivoting group comprises two spacers respectively disposed between the head of the bolt and the stepped leg tube and the nut and the stepped leg Bolts between the tubes. The steering retractable work ladder according to claim 5, wherein one end of each ladder leg sleeve is provided with a thickened reinforcing end, and each end of the ladder leg sleeve has a stop. A sliding sleeve, the sliding sleeve sleeve is set at the reinforcing end. The steering telescopic work ladder according to claim 1, wherein the opposite ends of each of the movable step foot sleeves are respectively sleeved with a slip-slip sleeve, and each of the limit components has a threaded section and a rotating handle respectively. unit.