CN201318118Y - Telescopic ladder and ladder rack - Google Patents

Abstract

The utility model provides a telescopic ladder and have ladder frame of this telescopic ladder, this telescopic ladder contains the grudging post that two intervals set up, and at least one rotating device, each grudging post all has several hollow form support columns, and its internal diameter is supreme convergent from down, so that the upside support column can be folded in the downside support column, each support column has two liang of corresponding fixed orificess of array, this rotating device has a dwang that rotationally between two horizontal corresponding support columns, and two pin joint units that are located this dwang both ends respectively, each pin joint unit has a control block that sets firmly in this dwang end, two baffle that touches respectively support in this control block both sides, and two are extended and can pass by this baffle respectively and stretch outstanding in the locating lever of fixed orifices. The fixed hole is matched with the rotating device, so that the telescopic ladder can be unfolded and folded layer by layer, and the effects of convenient storage and no space occupation are achieved.

Description

Telescopic Ladders and Ladder Frames

【Technical field】

The utility model relates to a ladder and a ladder frame, in particular to a retractable and retractable ladder and a ladder frame.

【Background technique】

Ladders are a very common tool for climbing in daily life or work. The existing ladders are mainly composed of two vertical poles arranged at intervals, and several connecting plates fixed between the two vertical poles. You can hold the pole in your hand and step on the connecting plate to perform climbing actions. Although the above-mentioned ladder can allow the user to reach the desired height smoothly, it cannot be folded after use, so it can only be stood upright against the wall or placed horizontally on the ground, which is not only difficult to carry, but also takes up a lot of space in storage, and causes The possibility of accidents due to people stumbling over the ladder, and the existing ladders cannot freely adjust the height according to the needs of users, so that users need to prepare ladders of various heights for different environmental requirements Replacement use takes up space for storage and also increases the burden on users.

【Content of utility model】

The purpose of the utility model is to provide a telescopic ladder that can be folded layer by layer, does not take up space for storage, and can adjust the height according to the needs of users.

Therefore, the telescopic ladder of the present invention includes two vertical stands arranged at intervals, each of which has a plurality of hollow support columns, and the inner diameter of each support column is tapered from bottom to top, so that the upper side supports The columns are telescopically folded into the lower support columns, and the feature is that each support column has multiple pairs of corresponding fixing holes, and the telescopic ladder also includes at least one rotating device, and the rotating device has a A rotating rod rotatably interposed between two horizontally corresponding supporting columns, and two pivot units respectively located at both ends of the rotating rod, each pivot unit has a long bar fixed at the end of the rotating rod shaped control block, two baffles respectively touching the two sides of the control block, two positioning rods extending from the baffle and protruding from the fixing hole, and two respectively sleeved on the Two elastic pieces on the positioning rod, each elastic piece is interposed between the corresponding baffle plate and the support column.

When the telescopic ladder is unfolded so that the fixing holes of the upper and lower support columns are aligned and communicated, and the rotating rod is rotated to a protruding position, the control block will be linked to a horizontal state to push the second baffle to squeeze The elastic member accumulates elastic force, and the positioning rod is interlocked by the baffle to protrude and be positioned in the fixing holes of the upper and lower support columns at the same time, so that the upper support column is supported by the lower support column. It is in a protruding positioning shape. When the handle is rotated to a retracted position, the control block will be linked to a longitudinal state, so that the elastic force of the elastic member will be released and pushed against the second baffle plate, and the positioning will be linked. The rod is separated from the fixing hole of the upper supporting column and positioned in the fixing hole of the lower supporting column, so that the upper supporting column is folded into the lower supporting column.

The utility model also provides a ladder frame, which is characterized in that it comprises two telescopic ladders according to claim 1, and each telescopic ladder also includes a seat board connecting the uppermost supporting columns of the two vertical frames, An engaging piece pivotally arranged on one side of the seat plate, and a boss fixed on the other side of the seat plate opposite to the engaging piece, wherein the engaging piece of a retractable ladder can Separately engaged with the boss of another telescopic ladder.

The beneficial effect of the utility model lies in that the telescopic ladder can be unfolded and folded layer by layer through the cooperation of multiple pairs of corresponding fixing holes on each supporting column and the rotating device, and can be used in response to different environments. It achieves the effect of convenient storage and does not take up space.

【Description of drawings】

Fig. 1 is a perspective view illustrating the structure of a preferred embodiment of the utility model telescopic ladder;

Fig. 2 is a front view, assisting in explaining the unfolding process of the support column of the preferred embodiment shown in Fig. 1 in the front view direction;

Fig. 3 is a side sectional view of a part, which assists in explaining the partial unfolded state of the support column in the side view direction of the preferred embodiment shown in Fig. 1;

Fig. 4 is a partial sectional view illustrating the partial sectional structure of the preferred embodiment in a folded state;

Fig. 5 is a perspective view illustrating the preferred embodiment, using the handle to rotate the detailed features;

Fig. 6 is a perspective view illustrating the overall folded state of the preferred embodiment;

Figure 7 is a perspective view illustrating a preferred embodiment of the ladder frame of the present invention; and

Fig. 8 is a side view to assist in explaining the shape of the engaging member and the hook ring in the preferred embodiment.

【Detailed ways】

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail. Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numerals.

Referring to Fig. 1 and Fig. 2, the preferred embodiment of the telescopic ladder 1 of the present utility model comprises two stands 2 arranged at intervals, each stand 2 has several hollow support columns 21, and each support column 21 The inner diameter of the frame is tapered from top to bottom, so that the upper support column 21 can be telescopically folded in the lower support column 21, and each stand 2 also has a The bottom column 22 is so that the bottom column 22 can be bent and folded relative to the lowermost support column 21, and each support column 21 has two sets of corresponding fixing holes 23, which are respectively located at the bottom of the support column 21. The upper and lower ends (as shown in FIG. 1 ), in detail, the fixing holes 23 of each supporting column 21 can be divided into fixing holes 23a on the upper side and fixing holes 23b on the lower side (as shown in FIG. 2 ).

Referring to Fig. 2,3, this retractable ladder 1 also comprises several rotating devices 3 (only shows 1 among Fig. 3), and several pedal devices 4 (only shows 1 among Fig. 3), each rotating device 3 has A rotating rod 31 rotatably interposed between two horizontally corresponding supporting columns 21, two pivot units 32 respectively located at two ends of the rotating rod 31, and a handle 33 fixed on the rotating rod 31, Each pivot unit 32 has a control block 321 which is fixed at the end of the rotating rod 31 and is generally in the shape of a strip, two baffle plates 322 respectively abutting against the two sides of the control block 321, and two baffle plates 322 respectively supported by the baffle plate. The plate 322 extends and can penetrate the positioning rod 323 protruding from the fixing hole 23, and two elastic members 324 respectively sleeved on the two positioning rods 323, each elastic member 324 is interposed between the corresponding baffle plate 322 and the support column 21 , the handle 33 is used to switch the position of the control block 321 of each pivot unit 32 by rotating the rotating rod 31 .

Each pedal device 4 has an inverted U-shaped bracket 41 transversely connected between the corresponding supporting columns 21, two pivot plates 42 ( Fig. 3 only shows 1) due to viewing angle, and several sleeves 43 fixed on the inverted U-shaped 41 of the bracket and respectively supplying corresponding positioning rods 323 to penetrate. In this embodiment, each elastic member The two ends of 324 abut against the corresponding baffle 322 and the sleeve 43, and the inverted U-shaped bracket 41 also has an inclined top plate 411, which is convenient for the user to step on.

Referring to Figure 3 and Figure 5 together, when the telescopic ladder 1 is unfolded so that the lower fixing hole 23b of the upper supporting column 21 is aligned with the upper fixing hole 23a of the lower supporting column 21, and the handle 33 is rotated to make the rotation When the rod 31 is in a protruding position, it will be linked with the control block 321 to be in a horizontal state to push the two baffles 322 to squeeze the elastic member 324 to accumulate elastic force, and the positioning rod 323 will be linked by the baffle 322 And protrude through and be positioned in the fixing holes 23a, 23b of the upper and lower support columns 21 at the same time, so that the upper support column 21 is protruding and positioned in the lower support column 21 . The user can extend the number of the support columns 21 according to the needs, and adjust the length of the telescopic ladder 1 in conjunction with the above-mentioned rotating device 3, so that the user can step on the inverted U-shaped bracket 41 of the pedal device 4 and to the desired height.

Referring to Fig. 4 and Fig. 5 together, when retracting the retractable ladder 1, rotate the handle 33 in a retracted position and simultaneously move the control block 321 into a longitudinal state, so that the elastic force of the elastic member 324 is released and Push the two baffles 322 so that the two baffles 322 are close to each other and move the positioning rod 323 to break away from the fixing holes 23a, 23b of the upper and lower support columns 21, so that the upper support columns 21 are closed at the bottom. In the side support columns 21, the fixing holes 23a, 23b of the upper and lower side support columns 21 are also in an unconnected state. After each support column 21 is folded from top to bottom in the above-mentioned manner, it can be reached as shown in Figure 6. Show the effect of storage.

By virtue of the above design, the telescopic ladder 1 of the present utility model has the following advantages in actual use:

(1) Streamlining of components:

The telescopic ladder 1 mainly uses the direction of the control block 321 to push against the baffles 322 located on both sides of the control block 321, and cooperates with the elastic member 324 to make the positioning rod 323 protrude or break away from the position. The above-mentioned fixing holes 23a, 23b allow the telescopic ladder to achieve the functions of stretching and collapsing, and the components are quite simplified.

(2) Convenient operation:

When the user operates the telescopic ladder 1, as long as he turns the handle 33 fixed on the rotating rod 31, he can change the direction of the control block 321 and link the positioning rod 323 to extend or retract the ladder. Telescopic ladder 1, so it is quite convenient and simple in operation.

(3) Beautiful appearance:

The rotating device 3 is hidden under the inverted U-shaped bracket 41 of the pedal device 4 from the appearance, so it is not easy to see the rotating device 3 directly from the appearance. Moreover, the pedal device 4 covers the rotating device 3 In addition, it can also be used for users to step on and climb directly, which has both beautiful and practical effects.

Referring to Fig. 7, the preferred embodiment of the ladder frame of the present utility model includes two telescopic ladders 1 shown in Fig. Seat plate 24, one engaging member 25 pivotally arranged on one side of the seat plate 24, one protrusion 26 fixed on the other side of the seat plate 24 opposite to the engaging member 25, and at least one The pedal device 4 between the corresponding supporting columns 21 is connected transversely. The ladder frame is assembled by engaging the engaging part 25 of each telescopic ladder 1 with the boss 26 of the other telescopic ladder 1, and the ladder frame also includes two The retractable ladder corresponds to the shackle 5 of the pedal device 4 (only one is shown in the figure because of the viewing angle), and a hook 6 hooked between the two shackles 5 .

Referring to FIG. 8 , it can be seen in more detail how the engaging member 25 engages with the boss 26 , and in this embodiment, the pedal device 4 closest to the seat plate 24 is called the first pedal device 4, and the pedal device 4 closest to the first pedal device and located below it is called the second pedal device 4, and each shackle 5 is locked on the second pedal device 4 of each retractable ladder 1, And the two shackles 5 face each other, so that the hook 6 can be hooked between the two shackles 5 to ensure its stability when the ladder frame is in use, and the two shackles 5 are locked on any All pedal devices 4 can achieve the same effect, and therefore should not be limited by the content disclosed in this embodiment. Moreover, the ladder frame utilizes two telescopic ladders 1 as two support points without leaning on the wall, which not only can be used flexibly without the restriction of the wall, but also can increase the stability during use, and also has the function of unfolding storage effect.

It can be seen from the above description that the telescopic ladder 1 of the present invention uses the handle 33 to change the orientation of the control block 321 of the rotating device 3, so that the upper support column 21 can protrude and be fixed in the lower support column 21. Extend the telescopic ladder 1, or make the upper support column 21 foldable in the lower support column 21 to achieve the effect of storage. The utility model ladder frame uses two telescopic ladders 1 as support points, which is more flexible Use, the advantage of better stability, so really can reach effect of the present utility model.

Claims (7)

1. telescopic ladder, comprise two stands that are provided with at interval, each stand all has several hollow form support columns, and the internal diameter of each support column is a convergent from bottom to up, so that upside support column telescopically collapses in the downside support column, it is characterized in that: each support column has the corresponding in twos fixing hole of array, this telescopic ladder also comprises at least one tumbler, this tumbler has a dwang between two horizontal corresponding support columns rotationally, and two hinged unit that lay respectively at these dwang two ends, each hinged unit has a controll block that is fixedly arranged on this dwang end and generally is strip, two are touched the baffle plate that is butted on these controll block both sides respectively, two are extended and can be stretched through by this baffle plate respectively and protrude in the backstay of described fixing hole, and two elastic components that are sheathed on respectively on this two backstay, each elastic component is between corresponding baffle plate and support column.

2. telescopic ladder as claimed in claim 1 is characterized in that: each stand also has a foundation that is hubbed on the support column of lower side, folds so that this foundation can bend with respect to the lower side support column.

3. telescopic ladder as claimed in claim 2, it is characterized in that: this telescopic ladder also comprises at least one device with pedal, have one and laterally connect that inverse-U-shape rack between the corresponding support column, two are connected in these support both sides and in order to the pivot connecting plate of the dwang that articulates this tumbler, and several sleeves that are fixedly arranged on this support and stretch through for corresponding backstay respectively, the two ends of each elastic component are to be resisted against on corresponding baffle plate and the sleeve.

4. telescopic ladder as claimed in claim 3 is characterized in that: this tumbler also has one and is fixed on this dwang in order to change the handle in this controll block orientation.

5. telescopic ladder as claimed in claim 4 is characterized in that: this inverse-U-shape rack also has a top plate portion that is obliquely installed.

6. ladder, it is characterized in that: comprise two described telescopic ladders of claim 1, each telescopic ladder also comprises seat board, the wherein fastener of a side that is hubbed at this seat board that connects the top side support column of two stands, and one be fixedly arranged on this seat board in contrast to the projection of an other side of this fastener, and wherein the fastener of a telescopic ladder is sticked on the projection of another telescopic ladder separably.

7. ladder as claimed in claim 6, it is characterized in that: each telescopic ladder also comprises at least one laterally device with pedal between the corresponding support column of connection, this ladder also comprises two hook rings that are locked on respectively on the corresponding device with pedal of this two telescopic ladder, and one colludes the hook of being located between this two hook ring.

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