CN103277647A - Foldable support - Google Patents

Abstract

The invention discloses a foldable bracket, which comprises a limit rod, a first movable bracket and a second movable bracket which are cross-connected flexibly, a chassis is installed on the top of the two movable brackets, and the two sides of the top of the first movable bracket are respectively provided with Slide rail, the cross section of the slide rail is inverted U-shaped, and the inner and outer sides of the slide rail are provided with symmetrical barb-shaped slide rail grooves; one end of the limit rod is connected with a limit angle iron, and the other end of the limit rod is inserted into a spring and After passing through the chassis, it is connected with the first knob; screws are arranged in the groove of the slide rail. In the present invention, by pulling the limit rod to drive the limit angle iron to rotate around the connecting pin, the different positions of the screws in the slide rail groove can be adjusted, so that the bracket can achieve the effect of supporting and folding back and forth, which is not only compact in structure and convenient in operation, but also saves The storage space can also adjust the height of the bracket according to the external conditions, which enhances the flexibility of work and is conducive to the promotion of production and use.

Description

A collapsible stand

technical field

The invention relates to a bracket, in particular to a foldable bracket.

Background technique

As a supporting tool, the bracket has been widely used in the field of machinery or electric cutting. At present, the brackets used in the market usually include support legs and support plates, which are fixed and installed. When using, the machine or other large objects need to be manually moved As for the support plate, this method of use is labor-intensive and time-consuming, and after use, the support is not easy to store, and it takes up a certain amount of space when stored. For this reason, there is an urgent need for a collapsible stand. At present, the collapsible stand can only be folded and used by disassembling the supporting feet or supporting plates. Yes, workers cannot adjust the height of the bracket at any time according to external conditions such as their own height.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention proposes a foldable bracket.

Technical solution: In order to solve the above-mentioned technical problems, a foldable bracket of the present invention includes a limit rod, a first movable bracket and a second movable bracket that are cross-movably connected, and a chassis is installed on the top of the two movable brackets. Slide rails are respectively provided on both sides of the top of the movable support, the cross section of the slide rails is inverted U-shaped, and symmetrical barb-shaped slide rail grooves are provided on the inner and outer sides of the slide rails; one end of the limit rod is connected to a limited Angle iron, the other end of the limit rod is inserted into the spring and connected with the first knob after passing through the chassis; screws are arranged in the groove of the slide rail.

The limit rod is connected with one end of the limit angle iron through a locking screw and locked to the limit angle iron, and the limit angle iron is also connected with the connecting pin inserted into the slide rail and rotates around the connecting pin.

The screw includes a head, a shaft and a threaded part, the threaded part is riveted on the first movable bracket, the shaft is stuck in the slide rail groove, and the head is exposed from the slide rail groove on the inner surface.

A limiting plate is provided on the second movable bracket, and a limiting pin matching the limiting plate is arranged on the limiting rod.

The shape of the limiting angle iron is arc-shaped.

The four corners of the chassis are respectively provided with shock absorbing pads, and the side of the chassis is provided with handles.

In the present invention, the slide rail and the chassis are welded together as a whole. The present invention is also provided with a second knob, the second knob is on the other side of the slide rail, and the screw is riveted on the first movable bracket. When the foldable support reaches a certain working state, the second knob is locked to prevent the first movable support from sliding.

Beneficial effects: a foldable bracket of the present invention, slide rails with slide rail grooves are respectively arranged on both sides of the movable bracket, the limit angle iron is driven to rotate around the connecting pin by pulling the limit rod, and the adjustment screw is in the slide rail groove different positions inside, so that the bracket can achieve the effect of supporting and folding back and forth. Compared with the prior art, the present invention has a compact structure, convenient operation, convenient storage and saving storage space, and the height of the bracket can also be adjusted according to external conditions such as height. The flexibility of work is greatly increased, which is conducive to the promotion of production and use.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is a schematic diagram of the working state of the present invention;

Fig. 3 is a state diagram in folding of the present invention;

Fig. 4 is a state diagram after folding of the present invention;

Fig. 5 is a schematic diagram of the structure of the slide rail in the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 to 5, a foldable bracket of the present invention includes a limit rod 6, a first movable bracket 1 and a second movable bracket 2 that are articulated in a cross, and a chassis 3 is installed on the top of the two movable brackets. The two sides of the top of the first movable support 1 are respectively provided with slide rails 4, the cross section of the slide rails 4 is inverted U-shaped, and the inner and outer surfaces of the slide rails 4 are provided with symmetrical barb-shaped slide rail grooves. The track groove includes a slide rail top 17, a slide rail tail 16 and a slide rail end 18; one end of the limit rod 6 is connected to a limit angle iron 5, and the other end of the limit rod 6 is inserted into a spring 11 and passes through the chassis 3 to connect with the first A knob 7 is connected; a screw 20 is arranged in the slide rail groove.

In this embodiment, the limit rod 6 is connected to one end of the limit angle iron 5 through the locking screw 10 and locked to the limit angle iron 5, and the limit angle iron 5 is also connected to the connecting pin 9 inserted into the slide rail 4 And take the connecting pin 9 as the axis to rotate. The screw 20 includes a head, a shaft and a threaded part, the threaded part is riveted on the first movable bracket 1, the shaft is stuck in the slide rail groove, and the head is exposed from the slide rail groove on the inner surface. The second movable bracket 2 is provided with a limiting plate 13 , and the limiting rod 6 is provided with a limiting pin 14 matched with the limiting plate 13 . The shape of the limiting angle iron 5 is arc-shaped. The four corners of the chassis 3 are respectively provided with shock absorbing pads 15 , and the sides of the chassis 3 are provided with handles 12 .

When the present invention is in working condition, the screw 20 is at the top 17 of the slide rail. In order to prevent the screw 20 from slipping out from the top 17 of the slide rail, an arc-shaped limit angle iron 5 is provided here to ensure that the chassis 3 is manipulated anyway, and the screw 20 All will not slide from the top 17 of the slide rail to the tail 16 of the slide rail, and at this moment the second knob 8 is in a locked state.

As shown in Figure 2, when the bracket needs to be folded, the second knob 8 is released, the second movable bracket 2 is stepped on, and the handle 12 is pulled, so that the screw 20 leaves the top 17 of the slide rail and reaches the end 18 of the slide rail. Pull the first knob 7, under the action of the spring 11, the limit rod 6 slowly moves towards the tail of the slide rail 16, under the action of the limit rod 6, the limit angle iron 5 rotates around the connecting pin 9, and reaches the position shown in Figure 2 In the position shown, the screw 20 can slide from the end portion 18 of the slide rail to the outer arc surface of the limit angle iron 5 .

As shown in FIG. 3 and FIG. 4 , under the action of force, the limiting pin 14 slides down the arc of the limiting plate 13 to the lower positioning surface of the limiting plate 13 , and the second knob 8 is locked after the bracket is folded.

When it is necessary to open the folded support to a working state, it is only necessary to repeat the above steps in order from bottom to top.

The above are only preferred embodiments of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can also be made without departing from the principles of the present invention, and these improvements and modifications should also be considered Be the protection scope of the present invention.

Claims (6)

1. folding bracket, it is characterized in that: comprise first travel(l)ing rest (1) and second travel(l)ing rest (2) that position-limited lever (6), intersection flexibly connect, the top of two travel(l)ing rests is equipped with chassis (3), first travel(l)ing rest (1) both sides, top are respectively equipped with slide rail (4), the cross section of described slide rail (4) is inverted U, and the inner side surface of slide rail (4) and outer side surface are provided with the barb type sliding-rail groove of symmetry; Described position-limited lever (6) one ends are connected with spacing angle bar (5), position-limited lever (6) the other end insert spring (11) and pass back, chassis (3) and first handle knob (7) be connected; Be provided with screw (20) in the sliding-rail groove.

2. folding bracket according to claim 1, it is characterized in that: described position-limited lever (6) is connected with an end of spacing angle bar (5) by lock screw (10) and to spacing angle bar (5) locking, spacing angle bar (5) also with insert slide rail (4) in connecting pin (9) be connected and serve as a rotation with connecting pin (9).

3. folding bracket according to claim 1, it is characterized in that: described screw (20) comprises head, axial region and screw section, described screw section is riveted on first travel(l)ing rest (1), and axial region is stuck in the sliding-rail groove, the sliding-rail groove of head exposing inside thereof face.

4. according to each described folding bracket of claim 1 to 3, it is characterized in that: described second travel(l)ing rest (2) is provided with limiting board (13), and position-limited lever (6) is provided with the position limit pin (14) suitable with limiting board (13).

5. according to each described folding bracket of claim 1 to 3, it is characterized in that: described spacing angle bar (5) be shaped as circular arc.

6. according to each described folding bracket of claim 1 to 3, it is characterized in that: four drift angle places of described chassis (3) are provided with beam (15) respectively, and side, chassis (3) is provided with handle (12).

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