CN2115450U

CN2115450U - Improved structure of undercarriage

Info

Publication number: CN2115450U
Application number: CN 92203274
Authority: CN
Inventors: 赖石旺
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-02
Filing date: 1992-03-02
Publication date: 1992-09-09

Abstract

The utility model relates to an improved structure of an undercarriage, which is composed of an upright stanchion, a connector, a supporting leg, etc. The upright stanchion is connected into a whole with the connector; the supporting leg is hinged with the connector; the connector is provided with a flange; the flange is provided with a through hole; the splitting end of the supporting leg is provided with a pair of arc-shaped guide grooves at the point corresponding to the through hole. A controlling pin which is provided with two flanges penetrates between the arc-shaped guide grooves and the flange of the connector; the arc-shaped guide grooves are provided with positioning holes. When the utility model is used, a supporting bracket can be adjusted to an ideal height as long as the controlling pin is pressed; the flanges of the controlling pin are fastened in the positioning holes on the arc-shaped guide groove by the restoring force of an elastic element. Therefore, the utility model has the advantages of simple structure, steady support, convenient adjustment, convenient fold and convenient storage.

Description

Improved structure of undercarriage

The utility model relates to a kind of foot rest, says it is a kind of light fixture that is applicable to, the improvement structure of the supporting frame of lighting installation, MIC microphone, parasols, tables and chairs and sports equipment etc. with having.

General the most common foot rest, in order to make it folding and firmly to stand, often must relend the supporting member that can amount between its king-rod and each leg and make supplemental support, make it unlikely and topple over, though but the so folding and the effect of firmly standing, but strict analysis gets up to find to have unavoidably some defectives to be solved, be one, foot rest commonly used does not all have the suitably effect of blocking each other owing to after folding or being expanded to the location, therefore only support with supporting member, stability and steadiness are bad; Its two, foot rest commonly used is owing to be limited by the fixed length of supporting member, therefore can't adapt to various actual demand and adjusts the height of vertical rod at any time, causes the inconvenience in the use; Its three, therefore foot rest that this is commonly used promptly can form the phenomenon that takes up room virtually owing to many give fixed number purpose supporting member, causes and puts, folding is to be difficult for, and structure is numerous and diverse, the manufacture cost height; Its four, foot rest that this is commonly used is owing to use supporting member to stand with auxiliary vertical rod, thus need be one by one when desiring folding this supporting member of bending earlier, then bend leg again, make it to dwindle whole volume, for collection, amount to action so can't realize operating fast.

In view of this, the inventor is through thinking in detail, and the long-pending experience of being engaged in the various product developmental research for many years, several times trial-production proposes the utility model eventually, and its main purpose is to provide a kind of improvement structure of foot rest, make it with the structure of simplifying most, the simplest and the most direct operation, to realize the foot rest adjustment, folding is quick and convenient, and the location of blocking firmly.

Two of the purpose of this utility model is to provide a kind of structure-improved of foot rest, and making it need not other supplemental support element can firmly stand, with reduce to put with folding after take up room, and relatively reduce manufacture cost.

Three of the purpose of this utility model is to enlarge its Applicable scope, makes it promptly applicable to light fixture, lighting installation and MIC microphone, again applicable to parasols, tables and chairs and sports equipment etc.

The purpose of this utility model realizes by following measure: include vertical rod, leg, joint, there is an open-work at the joint center and connects as one with this vertical rod fit, the edge integral shape that it is characterized in that this joint has bump, and appropriate location offers an open-work on this bump; Leg one end is the jag shape, and this jag end yoke is enclosed within the bump of joint, and hinge joint thereon; Offer a pair of arc guide barrel corresponding to through-hole position on the bump of joint on this jag end, on arc guide barrel, offer plural positioning hole; Control pin is located in respectively on arc guide barrel and the joint between the open-work, and one-body molded two flanges on it, this lip diameter are greater than the width of arc guide barrel, and is slightly less than the diameter of positioning hole on the arc guide barrel; Elastic element is set in respectively on the control pin, and after the assembling just on one of this control pin flange and joint in the open-work than the major diameter hole between the diapire.

To sum up state, it is significant that the utility model is compared effect with prior art:

One because the utility model does not adopt the supplemental support element, only by the blocking effect of positioning hole on control pin flange and the arc guide barrel, therefore, promptly simplifies the structure greatly, can guarantee firm support again; Its two, the utility model adjustment height needn't be restricted again and the fixed length of supporting member, and the support angle of only adjusting leg can arbitrarily change the foot rest height, and is therefore easy to adjust; Its three, volume is little after the utility model folding, is convenient to collection, and folding is easy to operate.

The accompanying drawing drawing is described as follows:

Fig. 1 is a three-dimensional exploded view of the present utility model.

Fig. 2 is the utility model three-dimensional combination figure.

The generalized section that Fig. 3 does not enter positioning hole for control pin in the utility model.

The generalized section that Fig. 4 enters positioning hole for control pin in the utility model.

Fig. 5 is the utility model leg schematic representation that is the level of state.

Fig. 6 is to tilt an angle schematic representation for the utility model leg.

Describe the utility model in detail below in conjunction with embodiment and accompanying drawing thereof:

At first see also Fig. 1, Fig. 2: the utility model is mainly combined by a vertical rod 1, joint 2, leg 3, control pin 4 and elastic element 5, wherein:

Vertical rod 1 is formed by tubulose or cylindrical metal or plastic material manufacturing;

Joint 2, its center have an one-body molded open-work 21, and this open-work 21 is sleeved on the lower end of vertical rod 1 and is fixedly connected with it; The another body formed bump 22 that has of joint 2 peripheries, the number of this bump 22 depend on the needs (being 3 in the present embodiment); Appropriate location at bump 22 offers a hole 221, and this hole is that the hole by two different-diameters combines, and a sector hole hole 222 diameters are big and another sector hole hole dia 223 is less.

Leg 3, leg 3 numbers are identical with the number of joint 2 bumps 22, (in the present embodiment being three).Leg 3 one ends are jag shape 31, and link respectively on the bump 22 of joint 3 with rivet 32 or bolt, jag end 31 corresponding to joint 2 bumps 22 on the position of hole 221, offer an arc guide barrel 33, these arc guide barrel 33 gyration center are the anchor point 32 of leg 3 and bump 22, offer positioning hole 331 on the guide groove 33, the number of positioning hole 331 is decided (being two in the present embodiment) that is the circular hole of diameter greater than guide groove 33 width is arranged on this arc guide barrel 33 on demand.

Control pin 4, its number is identical with the number of leg 3.This control pin 4 is made of bearing pin 41 and pin cap 42, and combination back integral body is arranged between the arc guide barrel 33 and the hole 221 on the joint 2 of leg 3.Control has a flange 43 on the bearing pin 41, on the pin cap 42 flange 44 is arranged also, and these two flanges, 43,44 diameters are greater than the width of arcuate furrow 33, and is slightly less than the diameter of positioning hole 331.

Elastic element 5 is a helical spring, and 4 supporting uses are sold in it and control, be set in respectively control respectively and sell on 4, and proper between the interior diapire than major diameter hole 222 of bearing pin flange 43 and hole 221 after the assembling, its elastic force of nationality can make control sell 4 and move axially.

For make after the folding leg 3 can with locate after vertical rod 1 is parallel merging phase, appropriate location at the bump 22 of joint 2 is offered a groove 23, be equiped with a spring 231 and steel ball 232 in this groove 23, and on the jag end 31 of leg 3, offer a hole 34 more smaller than steel ball 232 diameters with groove 23 corresponding parts, utilize working in coordination of this steel ball 232 and this hole 34, after making that leg 3 is folded to the location, this steel ball 232 can snap in this hole 34 in good time, unless the leg 3 after this folding of event is pulled again, otherwise unlikely coming off.

Below again in conjunction with other description of drawings working principle of the present utility model.See also Fig. 3, Fig. 4, when needs are adjusted bearing height of the present utility model or folding, earlier will be by pressure-controlled pin 4 compression elastic elements 5, thereby make control pin 4 that axial displacement take place to the right, at this moment,

flange

43,44 take the lead in withdraws from positioning hole 331, after breaking away from the blocking of this positioning hole, this leg 3 can be rotated motion for axle with hinge joint place 32 of joint 2, in rotation, offer arc guide barrel 33 on it along this control pin 4 and displacement, aimed at this controls pin at 4 o'clock until the positioning hole 331 that is displaced to desirable angle, this control is sold promptly under the elastic-restoring force effect of this elastic element 5 to left dislocation, during the boundary, flange 43 on the

control pin

4,44 enter in the selected positioning hole 331 in good time, make leg 3 engage the back with joint 2 and are one.The adjustment at leg 3 angles of inclination can reach control vertical rod height, to adapt to the needs of various different use condition.And after adjusting the location, because the blocking effect of control pin 4

flanges

43,44 and positioning hole 331 is arranged, can guarantee the firm of combination and worry that nothing shakes.Fig. 5, Fig. 6 promptly illustrate two kinds of user modes of the present utility model.

When desire is not used foot rest, only need to being the level of state with vertical rod 1 with these leg 3 switchings, at this moment, the steel ball 232 of installing can snap in the hole of establishing in these leg 3 jag ends 31 places 34 automatically on this joint 2, can obtain card and cause the location, no leg 3 gets loose and drops, and is difficult for and takes up room and cause to move.

Claims

1, a kind of structure-improved of foot rest, include vertical rod 1, leg 3, joint 2, there is an open-work at joint 2 centers and connects as one with this vertical rod 1 fit, it is characterized in that the edge integral shape of this joint 2 has bump 22, and appropriate location offers an open-work 221 on this bump 22; Leg 3 one ends are the jag shape, and these jag end 31 forks are enclosed within the bump 22 of joint 2, and hinge joint thereon; Offer a pair of arc guide barrel 33 corresponding to open-work 221 places on the bump 22 of joint 2 on this jag end 31, on arc guide barrel 33, offer plural positioning hole 331; Control pin 4 is located in respectively on arc guide barrel 33 and the joint 2 between the open-work 221, and one-body molded two flanges 43,44 on it, these flange 43,44 diameters are greater than the width of arc guide barrel 33, and is slightly less than the diameter of positioning hole 331 on the arc guide barrel 33; Elastic element 5 is set in respectively on the control pin 4, and after the assembling just on one of this control pin 4 flange 43 and joint 2 in the open-work 221 than major diameter hole 222 between the diapire.

2, according to the structure-improved of a kind of foot rest of claim 1, the appropriate location that it is characterized in that the bump 22 of described joint 2 is offered a groove 23, be equiped with a spring 231 and steel ball 232 in it, and the hole 34 of a diameter less than diameter of the steel ball offered in the corresponding position on the jag end 31 of this leg 3.

3, according to the structure-improved of a kind of foot rest of claim 1, it is characterized in that on the described joint 2 that set open-work 221 is combined by two different-diameters and concentric hole on the bump 22, one sector hole hole, 222 diameters are bigger, and another sector hole hole 223 diameters are less.

4, according to the structure-improved of a kind of foot rest of claim 1, it is characterized in that described control pin 4 is combined by bearing pin 41 and pin cap 42, flange 43 is arranged on the bearing pin 41, and flange 44 is arranged on the pin cap 42, and bearing pin and pin cap fuse after being arranged in open-work 221 on arc guide barrel 33 and the joint 2.