CN2241729Y

CN2241729Y - Fastener structure for extension bar of scaffold

Info

Publication number: CN2241729Y
Application number: CN 95227754
Authority: CN
Inventors: 黄朝明
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-11
Filing date: 1995-12-11
Publication date: 1996-12-04
Anticipated expiration: 2005-12-11

Abstract

The utility model relates to a fastener structure for an extension bar of a scaffold, which is composed of a big casing tube (1), a small casing tube (2), a ratchet bar (3), a snap ring (4), a forced fixing body (5), a snap (41), a tipping piece (411), a folding piece (412), etc. The small casing tube (2) just can be sleeved in the big casing tube (1); the end of the big casing tube (1) is fixed with the snap ring (4) and the snap (411); the ratchet bar (3) is fixedly connected in the small casing tube (2); the forced fixing body (5) is pivoted and sleeved outside the big casing tube; the forced fixing body (5) is provided with an inwardly tilting surface (51); when the forced fixing body (5) moves towards the snap ring (4), the inwardly tilting surface can bunt and presses the folding piece (412) on the front end, and bunt and embed into the ratchet of the ratchet bar (3), so that the telescopic rod of a scaffold does not shrink and shorten and the load can be born stably.

Description

The clamping structure of foot rest expansion link

The utility model relates to machinery and fixes connection class, particularly a kind of clamping structure of foot rest expansion link.

As everyone knows, the clamping structure of common foot rest expansion link is applied on the tripod of camera, on the frame pole bar that it is applied to fishing tackle that also has recently, the clamping structure of these expansion links great majority adopt cam to pull to compel and in the mode of the urgent clip of friction, force the expansion link of adjusting the back and keep its Len req, but because of these expansion links still need the axial support weight, often uneven or overweight or clamp holder malfunction or usefulness wearing and tearing for a long time because of loading, cause expansion link can't keep the location, cause automatic contraction, and then the weight that makes its support lands impaired, if valuables such as camera land, will cause very big loss, if fishing tackle falls into water or lands, to cause and descend pole again, not only time-consuming but also sweep angle to the greatest extent emerging.

The purpose of this utility model is the deficiency that exists at above-mentioned foot rest expansion link, support when providing a kind of clamping structure of foot rest expansion link promptly to shift to the snap-on ring and compel snap-on by the interior inclined-plane of its urgent solid, edgefold is to being embedded in the ratchet bar before making snap-on, fix the foot rest expansion link of adjusting the back thereby can push up pulls, and the weight of its burden of firm support

The technical solution of the utility model:

The deficiency that exists according to the clamping structure of present foot rest expansion link, the utility model adopts following clamping structure to solve this shortcoming, promptly be fixed with snap-on ring and snap-on thereof in big tube ends, and at the big embedded small casing that is with of sleeve pipe, and be connected with ratchet bar in the small casing, and at big sleeve pipe outer pivot cover one urgent solid, should compel to have an internal medicine face in the solid, should can when shifting to the snap-on ring, support urgent solid urgent snap-on in interior inclined-plane, make before the snap-on edgefold support and be embedded in the ratchet bar, but the weight of its burden of firm support just

Accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5 explanation structure of the present utility model and embodiment in conjunction with the accompanying drawings 1:

Fig. 1 is the cross-sectional schematic of the utility model.

Fig. 2 is the decomposing schematic representation of the utility model.

Fig. 3 is the action schematic diagram of the utility model.

Fig. 4 is the enforcement illustration of the utility model.

Fig. 5 is the another enforcement illustration of the utility model

(1) be big sleeve pipe, (2) are small casing, and (3) are ratchet bar, and (4) are the snap-on ring, and (5) for compeling solid, (6) are The Cloud Terrace, and (7) are frame pole seat, and (21) are hold-down screw, and (41) are snap-on, and (411) are oblique sheet, and (412) are tabs, and (51) are interior inclined-plane

The structure of accompanying drawing 2 explanation the utility model in conjunction with the accompanying drawings 1;

The utility model is made up of big sleeve pipe (1), small casing (2), ratchet bar (3), snap-on ring (4), urgent solid (5) etc., just can nested small casing (2) in the wherein big sleeve pipe (1), be that face just can hold face outside the cover small casing (2) within the big sleeve pipe (1), then can ccontaining and affixed ratchet bar (3) in small casing (2), with screw (21) locking small casing (2) and ratchet bar (3), and the cap body of hold-down screw (21) sinks in small casing (2) body as shown in Figure 2.Pipe end at big sleeve pipe (1) is fixed with snap-on ring (4), and snap-on ring (4) inboard is fixed with a snap-on (41), this snap-on (41) then extends an oblique sheet (411), and at oblique sheet (411) tail end lateral buckling one folding piece (412) in big sleeve pipe (1), make tabs (412) front end be supported the ratchet that is resisted against ratchet bar (3) when inside at oblique sheet (411), solid (5) is compeled in other socket one and in the contiguous big sleeve pipe of snap-on ring (4) (1) outside, should compel solid (5) and also be enclosed within oblique sheet (411) outside, and has inclined-plane in (51) in the inboard of compeling solid (5), inclined-plane (51) can be when urgent solid (5) be pulled to snap-on ring (4) in being somebody's turn to do, compel to support the oblique sheet (411) of snap-on (41), and make the preceding tabs (412) of oblique sheet (411) support gradually in the ratchet on the ratchet bar (3) into, can firm support the weight of burden.

In conjunction with the accompanying drawings 3, accompanying drawing 4, accompanying drawing 5 explanation action of the present utility model and embodiment:

As shown in Figure 3, when big sleeve pipe (1) urgent solid (5) is upward pushed away snap-on ring (4), inclined-plane (51) is tight against oblique sheet (411) in it, make tabs (412) even at the cost of one's life in the ratchet of ratchet bar (3), make small casing (2) can continue big relatively sleeve pipe (1) elongation, but can not shrink relatively, promptly big sleeve pipe (1), small casing (2) can't fold relatively again.So, guarantee the unlikely damage of falling of carrying weight of small casing (2) upper end.

In practical application, tripod as shown in Figure 4 is mainly used in the tripod of camera, goes up fine setting lifting structure by The Cloud Terrace (6), and is very convenient, practical with the tripod of this kind structure, guarantees that camera can not land to fall damage.Shown in the accompanying drawing 5 is the frame pole bar of fishing tackle, be provided with on the small casing (2) frame pole seat (7), when fishing rod group frame on frame pole seat (7), can not become flexible following yet.

The utility model is simple in structure, practical and convenient, firm, is a kind of desirable clamping structure.

Claims

1. the clamping structure of a foot rest expansion link, it is by big sleeve pipe (1), small casing (2), ratchet bar (3), snap-on ring (4), compel solid (5), snap-on (41), oblique sheet (411), tabs (412) is formed, wherein big sleeve pipe (1) but in fit small casing (2), it is characterized in that in small casing (2), being screwed a ratchet bar (3), at the end end of big sleeve pipe (1) with screw be connected a snap-on ring (4) and snap-on (41) thereof, this snap-on (41) then extends an oblique sheet (411), and at oblique tail end lateral buckling one folding piece (412) in big sleeve pipe (1) of sheet (411), and, promptly should compel the outside that solid (5) also is enclosed within oblique sheet (411) at the urgent solid (5) that has interior inclined-plane (51) near other one of the socket of big sleeve pipe (1) outside of snap-on ring (4).