CN208996617U - Mounting assembly for the rotation connection of folding ladder ladder leg - Google Patents

Abstract

For the mounting assembly of folding ladder ladder leg rotation connection, folding ladder includes at least four terraced legs；Mounting assembly, mounting assembly include metal inner lining and plastic wrapper, and metal inner lining is arranged in plastic wrapper；Fastener penetrates one of metal inner lining, plastic wrapper and two terraced legs and is fixedly connected, and fastener penetrates the rotation connection of one of metal inner lining, plastic wrapper and another two terraced legs.

Description

Mounting assembly for the rotation connection of folding ladder ladder leg

Technical field

The mounting assembly that the utility model relates to be rotatablely connected for folding ladder ladder leg.

Background technique

Folding ladder is the commonly used tool of ongoing operations.Existing folding ladder includes at least four ladder leg, wherein two terraced legs are One group, another two terraced legs are another group, and rotation connection is between two groups of ladder legs to realize folder function, the connection of currently available technology Part is single metalwork or unitary plastic part, and single metalwork does impact test, easily cause under the conditions of chilling temperatures The cracking of metalwork；And unitary plastic housing, stress intensity are again inadequate.

Utility model content

The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide a kind of structure design conjunction Reason, the mounting assembly for the rotation connection of folding ladder ladder leg haveing excellent performance.

The technical scheme in the invention for solving the above technical problem is: the installation for the rotation connection of folding ladder ladder leg Component, folding ladder include at least four terraced legs；Mounting assembly, mounting assembly include metal inner lining and plastic wrapper, metal inner lining It is arranged in plastic wrapper；Fastener penetrates one of metal inner lining, plastic wrapper and two terraced legs and is fixedly connected, and fastener penetrates gold Belong to the rotation connection of one of liner, plastic wrapper and another two terraced leg.

The utility model compared with prior art, has the following advantages that and effect: the utility model is by two kinds of unlike materials Components realize combination, impact resistance and stress intensity under cold conditions be obviously improved, specific significant progress.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model decomposing state.

Fig. 2 is the structural schematic diagram at another visual angle of the utility model.

Fig. 3 is the structural schematic diagram that metalwork described in the utility model is set in that plastics step on another embodiment.

Fig. 4 is the structural schematic diagram that plastics described in the utility model are stepped on.

Fig. 5 is the structural schematic diagram at another visual angle Fig. 4.

Fig. 6 is the structural schematic diagram of a terraced leg described in the utility model wherein embodiment.

Fig. 7 is the structural schematic diagram of another embodiment of terraced leg described in the utility model.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair The explanation of the utility model and the utility model is not limited to following embodiment.

Embodiment 1

As shown in Figures 1 to 3, a kind of folding ladder, the folding ladder include ladder 2 and compound pedal 1, and compound pedal 1 uses Connector 3 is mounted on ladder 2, and the ladder 2 includes terraced leg 21.Preferably, connector 3 be fastener, as rivet, screw, Lock pin etc. has axis class connector 3, and connector 3 wears ladder 2 and compound pedal 1 realizes installation.The compound pedal 1 includes plastics 11 and metalwork 12 are stepped on, the metalwork 12 is set in plastics and steps on 11.The metalwork 12, which is set in plastics, to be stepped on 11 and includes but is not limited to Such as two kinds of embodiments of Fig. 1 and Fig. 3, the former has plastics to step on 11 in 12 two sides of metalwork, and the latter only has unilateral side to have plastics to step on 11.

Metalwork 12 described in the present embodiment is located at the outer edge that plastics step on 11, and metalwork 12 steps on 11 outer edge along plastics Circumferentially extending is in open loop or closed loop, and metalwork 12 has at least one bending.The outer edge that plastics step on 11 is arranged in metalwork 12, To plastics step on 11 reinforced region and effect it is more excellent, the longer reinforcing effect of the extended distance of metalwork 12 equally under the conditions of degree of enclosing More preferably, but consider cost factor, the development length of metalwork 12 can select the highest mode of cost performance to implement as needed.Metal Vertical load capability improving after 12 bending of part.

Metalwork 12 described in the present embodiment is hollow tube, and hollow tube compares solid construction, and anti-yield behavior is stronger, weight It measures stronger.

Connector 3 described in the present embodiment is separately connected ladder 2 and metalwork 12 and compound pedal 1 is mounted on ladder 2.Ladder 2 and metalwork 12 be main load bearing component, using the connection structure, the load-carrying ability of compound pedal 1 is substantially improved.

As shown in figure 4, the front that plastics described in the present embodiment step on 11 is equipped with the groove body 10 for metal inlaying part 12, metalwork 12 are arranged in the groove body 10 and step on 11 with plastics and be fixedly connected.The mode being fixedly connected includes ordinary skill in the art hand Section, such as riveting, bonding, close-fitting, clamping, fastened by screw.

As shown in figure 5, it includes a flat main body 111 that plastics described in the present embodiment, which step on 11, along the outer edge of main body 111 Equipped with the surrounding edge 112 being fixedly connected with main body 111, the rib 113 being staggered in longitude and latitude is equipped in surrounding edge 112.

As shown in fig. 6, ladder 2 described in the present embodiment includes at least two terraced legs 21, compound 1 both ends of pedal are separately connected terraced leg 21, the ladder leg 21 includes aluminium alloy extrusions 211 and iron pipe 212, and the aluminium alloy extrusions 211 and iron pipe 212 combine parallel.Make It can rivet between preferred aluminium alloy extrusions 211 and iron pipe 212, weld or be bonded using colloid.The valence of iron pipe 212 in the structure Lattice are significantly lower than aluminium alloy extrusions 211, however the stress performance after the two structure is substantially improved, and cost of manufacture is reaching same Stress performance under the conditions of be greatly reduced.

As shown in fig. 7, aluminium alloy extrusions 211 described in the present embodiment has for the insertion of iron pipe 212 and cavity, iron pipe 212 If in this cavity.The space of aluminium alloy extrusions 211 indwelling installation iron pipe 212 in the structure, the two combinations matches degree is high, With rear reliable.

The present embodiment further includes the mounting assembly for the rotation connection of folding ladder ladder leg, and mounting assembly 4 includes metal inner lining 41 and plastic wrapper 42, metal inner lining 41 is arranged in plastic wrapper 42；The ladder 2 includes at least four terraced legs 21, as It is preferred that two terraced legs 21 are one group, another two ladder leg 21 is another group, fastener penetrate metal inner lining 41, plastic wrapper 42 with One of two terraced legs 21 are fixedly connected, and fastener penetrates the rotation connection of one of metal inner lining 41, plastic wrapper 42 and another two terraced leg 21. The present embodiment is 4 terraced legs, is shared to 2 mounting assemblies 4.In the prior art, single metal inner lining 41 is in chilling temperatures item Under part, impact test is done, the cracking of metal inner lining 41 is easily caused；And if unitary plastic housing 42, stress intensity again not Enough, after compound both in the application, impact resistance and stress intensity under cold conditions is obviously improved, specifically significantly into Degree.

The present embodiment further includes a plastics bridgeware 5 and the reinforcing rod 51 using tubing bending formation, the plastics bridge joint 5 both ends of part are separately connected the terraced leg 21 of two sides, and 51 both ends bending of reinforcing rod forms mounting portion, and the setting of reinforcing rod 51 is in two terraced legs 21 Inside, two mounting portions are fixedly connected on the inside of two terraced legs 21 respectively.This architecture enhance the stress of unitary plastic bridgeware 5 is strong Degree, is arranged suo loco, and reinforcing rod 51 has support effect to plastics bridgeware 5 again.

The length of two terraced legs 21 described in the present embodiment is greater than the length of another two terraced legs 21, further includes 5 He of a plastics bridgeware The reinforcing rod 51 formed using tubing bending, 5 both ends of plastics bridgeware are separately connected two relatively long terraced legs 21 of length End, 51 both ends bending of reinforcing rod form mounting portion, and for the setting of reinforcing rod 51 in two terraced 21 insides of leg, two mounting portions are terraced with two respectively It is fixedly connected on the inside of leg 21.

Above content is only illustrate to examples for clearly illustrating the present invention described in this specification.The utility model Person of ordinary skill in the field can make various modifications or additions to the described embodiments or using class As mode substitute, content without departing from the utility model specification or surmount model defined in the claims It encloses, all should belong to the protection range of the utility model.

Claims (1)

1. the mounting assembly for the rotation connection of folding ladder ladder leg, characterized in that folding ladder includes at least four terraced legs；Installation group Part, mounting assembly include metal inner lining and plastic wrapper, and metal inner lining is arranged in plastic wrapper；Fastener penetrates in metal One of lining, plastic wrapper and two terraced legs are fixedly connected, and fastener penetrates one of metal inner lining, plastic wrapper and another two terraced legs and rotates Connection.