TWM544559U - Telescopic and height-adjustable working ladder - Google Patents

Description

Work ladder with telescopic adjustable height

The present invention relates to the technical field of a work ladder structure for general construction work or professional workers in construction, and in particular relates to a work ladder with a telescopic adjustable height.

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. And lateral displacement to speed up the work It can be said that it is 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 working ladder with a telescopic adjustable height. The two ladder frames forming the working ladder are respectively provided with two ladder legs, two telescopic ladder rods and a plurality of detachable pedals, and the telescopic ladder rods are respectively The upper end of the two ladder legs of the ladder frame is composed of a combination of an upward extension and a downward contraction, and when the upward extension is extended, the two ends of the detachable pedal are fixed to the two telescopic ladder rods assembled to the extension ladder tube, and Flexibility to achieve a high degree of progress in extension.

In order to achieve the above purpose and effect, the work ladder with the telescopic adjustable height includes two ladder frames, respectively comprising two ladder legs with longitudinal ground support, and connecting the two ladder legs a plurality of fixed pedals of the tube, and two telescopic ladder rods and a plurality of detachable pedals, wherein the two telescopic ladder rods of each ladder frame are respectively sleeved on the upper ends of the two ladder legs to form a combination of upward extension and downward contraction, and each ladder foot tube Each has a plurality of fixing screws for fixing the telescopic ladder rod and the detachable pedal, and the corresponding two telescopic ladder rods of the two ladder frames are oppositely abutted at the upper end, and are respectively pivoted by a pivoting group. Two telescopic ladder rods, the two pivoting groups supporting the two ladder frames to form a combination of relative angular oscillations.

Wherein, the telescopic ladder rods of the two ladder frames are extended upward, and the two ends of the detachable pedals are fixed to the two telescopic ladder rods for extending the use height.

According to the above description of the present invention, a further technical feature of the present invention is that each of the ladder legs further has a slip sleeve disposed at one end of the ground end.

According to the above description of the present invention, a further technical feature of the present invention is that the upper ends of the corresponding two telescopic ladder rods of the two ladder frames are respectively provided with a pivot hole and are opposite to the same axis for the pivoting group to be worn. Pivot.

According to the above description of the present invention, a further technical feature of the present invention is that the two pivoting groups comprise a two-turn guide piece and a nut with a head bolt and a set bolt, and the two-turn guide stack And the sleeves are disposed at the pivoting positions of the telescopic ladder rods corresponding to the two ladder frames, and the two rotation guide sheets respectively have a flat surface and are opposite to the telescopic ladder rods corresponding to the two ladder frames, and the two rotation guide sheets respectively have an arc guide Face and relatively close, the bolt passes through the pivot hole of the telescopic ladder rod of the two ladder frame and the second turning guide piece, and the nut is assembled by the end screw, and the head and the nut of the bolt force the two telescopic ladder rod clamp The arc guiding surface of the second guiding guide piece is relatively tight, the bolt supporting the two ladder frame has a lateral displacement of the opening and closing swing, and the arc guiding surface of the turning guide piece is relatively tightly guided to guide the two ladder frames to form an angular yaw steering operation. .

According to the above description of the present invention, a further technical feature of the present invention is that the two pivoting groups comprise two spacers respectively disposed between the head of the bolt and the telescopic ladder rod and between the nut and the telescopic ladder rod. bolt.

According to the above description of the present invention, a further technical feature of the present invention is that each stepped leg tube has a fixing hole for fixing the screw through the outer wall, and each telescopic ladder rod is provided with the same axis of the corresponding fixing hole at different positions. To a plurality of screw holes, each telescopic ladder rod has a different screw hole with respect to the fixing hole of the ladder leg tube, and is fixed by a fixing screw to form an upward and downward contraction limit.

(1) ‧‧‧ ladder

(11) ‧‧‧Ladder tube

(111)‧‧‧Sliding sleeves

(112)‧‧‧Fixed holes

(12)‧‧‧Fixed pedals

(13)‧‧‧ Telescopic ladder

(131)‧‧‧Pivot

(132)‧‧‧ Screw holes

(14) ‧ ‧ detachable pedal

(15)‧‧‧ fixing screws

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

The third picture is a schematic cross-sectional view of the creation.

The fourth figure is a three-dimensional schematic diagram of the two telescopic ladder rods of the two-legged foot tube extending upward and raised and fixed by fixing screws.

The fifth figure is a schematic diagram of the steering operation of the arc guiding surface of the creation turning guide piece which is relatively close to the two-segment frame.

The sixth figure is a schematic diagram of the right side ladder frame which is supported by the left ladder frame and straddles at the same time.

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 fourth figures to create a work ladder with telescopic adjustable height, including: two ladder frames (1), respectively comprising two ladder legs (11) with longitudinal ground support, connecting the two ladder legs a plurality of fixed pedals (12) of the tube (11), and two telescopic ladder rods (13) and a plurality of detachable pedals (14), and the two telescopic ladder rods (13) of each ladder frame (1) are respectively arranged on the two ladder legs (11) The opposite end of the grounding end is sleeved to form a combination of upward and downward contraction, and each of the stepped legs (11) has a plurality of fixing screws for fixing the telescopic ladder rod (13) and the detachable pedal (14) respectively ( 15), the corresponding two telescopic ladder rods (13) of the two ladder frames (1) are oppositely abutted at the upper end, and are respectively pivoted by a pivotal group (2). A ladder rod (13), the two pivoting groups (2) supporting the two ladder frames (1) to form a combination of relative angular oscillations.

Wherein, the two telescopic ladder rods (13) of the two ladder frames (1) are extended upward, and the two ends of each detachable pedal (14) are assembled to the two telescopic ladder rods (13) and fixed screws (15) The screw lock is fixed to extend the height of use.

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.

Further, the features of the components of the present invention are further described below. In the above first to fourth figures, each of the stepped legs (11) further has a sliding sleeve (111) at one end of the grounding end. Secondly, the upper end of the corresponding two telescopic ladder rods (13) of the two ladder frames (1) are respectively provided with a pivot hole (131) and are opposite to the same axis for pivoting the pivoting group (2). again Each of the pivoting groups (2) respectively includes a second turning guide (22) and a nut (23) having a head bolt (21) and a set bolt (21), and the two turning guides (22) The stacking group is set at the position of the two pivot holes (131) of the telescopic ladder rods (13) corresponding to the two ladder frames (1), and the two turning guide sheets (22) respectively have a flat surface (221) and abut against The two ladder frames (1) correspond to two telescopic ladder rods (13), and the two rotation guide sheets (22) respectively have an arc guiding surface (222) and are relatively abutted, and the bolts (21) pass through the two ladder ladders (1) The pivot hole (131) of the telescopic ladder rod (13) and the second turning guide piece (22) and the nut (23) are screwed through the end, and the head and the nut (23) of the bolt (21) Forcing the two telescopic ladder rods (13) to clamp the arc guide surface (222) of the two-rotation guide piece (22) relatively tightly, the bolt (21) supporting the two ladder frames (1) with lateral displacement of the opening and closing swing, and steering The arcuate guide surface (222) of the guide piece (22) forms an angular yaw steering operation relatively close to the two ladder frames (1). Moreover, each pivoting group (2) includes two spacers (24) respectively sleeved between the head of the bolt (21) and the telescopic ladder rod (13) and the nut (23) and the telescopic ladder rod (13) Bolts (21). Finally, each of the stepped legs (11) respectively has a fixing hole (112) for the fixing screws (15) to be worn on the outer wall, and each telescopic ladder rod (13) is provided with the same axis of the corresponding fixing hole (112) at different positions. a plurality of screw holes (132), each telescopic ladder rod (13) is fixed with a different screw hole (132) opposite to the fixing hole (112) of the ladder leg tube (11), and is fixed by a fixing screw (15) to form an upward direction The limit of stretching and contracting downwards.

As described above, the work ladder (10) has a telescopic height-adjustable height, and each of the telescopic ladder rods (13) has different screw holes (132) with respect to the fixing holes (112) of the ladder leg tube (11), so that the ladders are The two telescopic ladder rods (13) of the frame (1) can be extended outwardly or inwardly by the length of the two ladder legs (11); therefore, when the height is required to be extended, the system can be expanded and contracted. The ladder rod (13) is extended upward, and is fixed to the screw holes (132) of the two telescopic ladder rods (13) by fixing screws (15) at both ends of each detachable pedal (14) to extend upward. Adjust the height of use to achieve the progressive use of flexible use.

On the contrary, after the construction is completed, the detachable pedals (14) are removed, and the two telescopic ladder rods (13) are contracted inwardly to the two ladder legs (11), as shown in the first figure. It is used to shorten the length and height to facilitate carrying and storage.

As shown in the fifth to sixth figures, the present invention has a two-turn guide (22) stack by the pivotal group (2), and a two-turn guide (22) set to the two ladders (1). The position of the pivot hole (131) of the telescopic ladder rod (13), the two rotation guide sheets (22) respectively have a flat surface (221) and abut against the telescopic ladder rod (13) corresponding to the two ladder frames (1). Further, the two-turn guide sheets (22) respectively have an arc guide surface (222) and the arc guide surfaces (222) of each other are relatively abutted, and the telescopic ladder rods of the two ladder frames (1) are threaded by the bolts (21) ( 13) a pivot hole (131) and a second turn guide piece (22), and the bolt (21) is screwed to the end to screw the nut (23), the head of the bolt (21) and the nut (23) are forced The two telescopic ladder rods (13) clamp the arc guiding surface (222) of the second turning guide piece (22) relatively tightly; accordingly, the bolt (21) supports the two ladder frames (1) to have a lateral displacement of the opening and closing swing, As shown by the arrow at the lower end of the ladder frame (1) on the right side of Figure 6, the left ladder frame (1) can be used to support the outward movement; and the arc guide surface (222) of the guide guide (22) is relatively tightly guided. The two ladder frames (1) form a slight angular yaw steering operation, as shown by the hollow arrows at the lower end of the ladder frame (1) on the right side of the fifth and sixth figures, The frame (1) is yawed for support.

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

1. When each of the ladder frames (1) is extended outwardly of the two telescopic ladder rods (13) of the two ladder legs (11), the fixing screws (15) at the two ends of each detachable pedal (14) are assembled to the The two telescopic ladder rods (13) are fixed, which are used to extend upwards according to the needs of the work to adjust the use height, and reach the spirit Progressive use of live use.

2. The detachable pedals (14) can also be removed, and the two telescopic ladder rods (13) are contracted inwardly 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 of the "Working ladder with telescopic height-adjustable height" is practically and cost-effective, and it is indeed in full compliance with the development of the industry, and the disclosed structural creation is also an unprecedented innovative structure. Therefore, its "newness" should be undoubtedly considered, and this creation can be more effective than the conventional structure. Therefore, it is also "progressive". It fully complies with the requirements of the application requirements for new patents in the Chinese Patent Law. File a patent application and ask the bureau to review it early and give it affirmation.

(1) ‧‧‧ ladder

(11) ‧‧‧Ladder tube

(111)‧‧‧Sliding sleeves

(12)‧‧‧Fixed pedals

(13)‧‧‧ Telescopic ladder

(15)‧‧‧ fixing screws

(2) ‧‧‧ pivot group

(21)‧‧‧ bolts

Claims (7)

The utility model relates to a working ladder with a telescopic adjustable height, comprising: two ladder frames, respectively comprising two ladder legs with longitudinal ground support, a plurality of fixed pedals connecting the two ladder legs, and two telescopic ladder rods and a plurality of detachable pedals. The two telescopic ladder rods of each ladder frame are respectively sleeved on the upper end of the two ladder legs to form a combination of upward extension and downward contraction, and each of the ladder leg tubes has a plurality of fixing screws for fixing the telescopic ladder rod and the detachable pedal respectively. The corresponding two telescopic ladder rods of the two ladder frames are oppositely abutted at the upper end, and are respectively pivotally connected by a pivoting group to the two telescopic ladder rods, and the two pivoting groups support the two ladder frames. The combination has a combination of relative angular oscillations; wherein each telescopic ladder rod of the two ladder frames extends upward, and the two ends of each detachable pedal are fixed to the two telescopic ladder rods for extending the use height. The work ladder of claim 1 or 2, wherein each stepped leg tube further has a slip sleeve disposed at one end of the ground end. The work ladder of claim 1 or 2, wherein the upper end of the corresponding two telescopic ladder rods of the two ladder frames are respectively provided with a pivot hole and are opposite to the same axis for the pivoting group to be worn. Pivot. The work ladder of claim 2, wherein the upper end of the corresponding two telescopic ladder rods of the two ladder frames are respectively provided with a pivot hole and are opposite to the same axis for the pivoting group to be worn. Pivot. The working ladder with telescopic height-adjustable height according to any one of claims 3 to 4, wherein each of the pivoting groups respectively comprises a two-turn guide piece and a nut having a head bolt and a set bolt. a two-turn guide stack and a set of two pivot holes of the telescopic ladder corresponding to the two ladders, the two turn guides respectively having a flat surface and corresponding to the two telescopic ladder rods corresponding to the two ladders, the two The turning guides respectively have an arc guiding surface and are relatively abutting, and the bolt piercing group The pivot hole of the telescopic ladder rod of the two ladder frame and the second turning guide piece and the nut are assembled by the end screw, and the head and the nut of the bolt force the two telescopic ladder rods to be opposite to the arc guiding surface of the second turning guide piece Tightly, the bolt supports the two ladder frames to have a lateral displacement of the opening and closing swing, and the arc guiding surface of the turning guide piece forms an angular yaw steering operation relatively close to the guiding two ladder frames. The work ladder of claim 5, wherein each pivoting group comprises two bolts respectively arranged between the head of the bolt and the telescopic ladder rod and between the nut and the telescopic ladder rod. . The working ladder with the telescopic adjustable height according to any one of the preceding claims, wherein each of the stepped legs is respectively provided with a fixing hole for fixing the screw through the outer wall, and each telescopic ladder rod has corresponding positions at different positions. The fixing holes have the same axial plurality of screw holes, and the telescopic ladder rods are fixed with different screw holes to the fixing holes of the ladder leg tube, and are fixed by screwing with fixing screws to form a limit for upward and downward contraction.