CN2839009Y

CN2839009Y - Safety wheel structure

Info

Publication number: CN2839009Y
Application number: CN 200520129408
Authority: CN
Inventors: 李煌宝
Original assignee: 李煌宝
Current assignee: Isotech Products Inc
Priority date: 2005-10-19
Filing date: 2005-10-19
Publication date: 2006-11-22
Anticipated expiration: 2015-10-19

Abstract

The utility model relates to a safety wheel structure. The utility model comprises an outer wheel body made of polyurethane (PU) foaming material and a wheel hub made of plastic material. During manufacture, the shaped wheel hub is arranged in a mould, and the outer wheel body is directly shaped by foaming on the wheel hub, so that the outer wheel body is integrated with the wheel hub to form an inflation-free safety wheel; the wheel hub comprises a wheel frame, a wheel spoke and an axle seat. The utility model is characterized in that two laterally symmetrical raised ring bodies are arranged on the outer ring surface of the wheel frame of the wheel hub, and raised ring bodies respectively keep a distance from the left side and the right side of the outer ring surface; a plurality of lateral through holes are equally distributed on the raised ring bodies; an annular groove is formed between the left raised ring body and the right raised ring body, and a plurality of lateral ribs are equally distributed on the annular groove, so that the PU foaming material can be filled in the through holes and among the ribs of the raised ring bodies during shaping by foaming. Thus, the bonding strength between the outer wheel body and the wheel hub can be improved. The utility model also avoids the defects of the easy peeling and the separation of the outer wheel body due to insufficient bonding strength existing in the prior art.

Description

The safety wheel structure

Technical field

The utility model relates to a kind of safety wheel structure, refers to a kind of directly safety wheel structure of foaming on the wheel hub of a plastic material of polyurethane (PU) material of utilizing especially.

Background technology

Present electric cycle that uses or wheelchair etc., be safety and the comfort feature of taking the user into account, the used wheel of special requirement must be the safety wheel structure of exempting to inflate, it is to utilize the outer wheel body of PU foaming material formation to replace general inner tube of a tyre formula or inner tube free tire, and when making, can utilize plastic material to make a wheel hub earlier, described wheel hub comprises the wheel frame, spoke and axle block, can adopt injection forming method one-body molded, again in type wheel hub is inserted in the mould, directly on wheel frame outer ring surface, utilize wheel body outside the moulding one of polyurethane (PU) material foaming again, outer wheel body of described PU and wheel hub are combined closely to be integral, must not assemble again yet, promptly become the safety wheel of exempting to inflate; Yet, described safety wheel De Zhi ?generally little, and the outer wheel body of PU foaming material forming must have suitable thickness to keep buffering effect, cause bonded area between outer wheel body and the wheel hub and relative the diminishing of anchoring strength and deficiency, but safety wheel is born a heavy burden not little when using, the situation that outer wheel body and wheel hub are peeled off takes place during therefore existing safety wheel is everlasting and is used, and also thereby cause danger, this is the shortcoming that has the PU safety wheel now.

Summary of the invention

The utility model purpose is to provide a kind of safety wheel structure.

To achieve these goals, the utility model provides a kind of safety wheel structure, comprise a wheel hub and an outer wheel body, described wheel hub comprises the wheel frame, spoke and axle block, and described outer wheel body is directly moulding on the outer ring surface of wheel frame, outer wheel body and wheel hub form integral structure, wherein, outer ring surface epirelief at the wheel frame of wheel hub is put the convex ring body of two lateral symmetry, and each left side from its outer ring surface of each convex ring body, right side edge one segment distance, and equidistant several cross-perforatings of laying on the convex ring body, left again, form an annular recess between right two convex ring bodies, and on annular recess, equidistantly lay several transverse ribs and form toothed surfaces, make the PU material directly on the outer ring surface of the wheel frame of wheel hub outside the foaming one during wheel body, the outer wheel body of described PU can be inserted in each perforation of convex ring body and between each rib simultaneously, can promote the anchoring strength between outer wheel body and the wheel hub, solves the problem of anchoring strength deficiency between outer wheel body of existing PU safety wheel and the wheel hub thus.

Description of drawings

Fig. 1 is wheel hub one an embodiment stereo appearance figure of the present utility model;

Fig. 2 is the side sectional view of the 1st figure;

Fig. 3 is the utility model one embodiment stereo appearance figure;

Fig. 4 is the side sectional view of the 3rd figure.

Description of reference numerals: safety wheel 1; Wheel hub 10; Wheel frame 11; Spoke 12; Axle block 13; Outer ring surface 14; Convex ring body 15; Distance 16; Perforation 17; Annular recess 18; Rib 19; Outer wheel body 20.

The specific embodiment

Shown in figure 1,2,3,4, the utility model safety wheel 1 comprises a wheel hub 10 and an outer wheel body 20, wherein, described outer wheel body 20 is to form with polyurethane (PU) material, foam material or other similar material, and wheel hub 10 is to form with plastic material or similar material; Described wheel hub 10 comprises wheel frame 11, spoke 12 and axle block 13, can adopt injection forming method one-body molded, make wheel hub 10 become the wheel hub structure body of the enough compressive strength of a tool, and the shape or the dimensions of described spoke 12 and axle block 13 do not limit, can do different designs according to need; The processing procedure of described again safety wheel 1, can make a wheel hub 10 earlier, again in type wheel hub 10 is inserted in the forming mould, pour into the PU material again, make the PU material can be on the outer ring surface 14 of wheel frame 11 the direct outer wheel body 20 of foaming one, make to concern by similar material between outer wheel body 20 and the wheel hub 10 and clinkering is integral the formula structure; And of the present utility model being characterised in that: outer ring surface 14 epireliefs of the wheel frame 11 of described wheel hub 10 are put the convex ring body 15 of two lateral symmetry, and each is from the left and right side edge of outer ring surface 14 segment distance 16, and equidistant several cross-perforatings 17 of laying on the described convex ring body 15; Form an annular recess 18 between left and right again two convex ring bodies 15, and equidistant several transverse ribs 19 of laying on the described annular recess 18, annular recess 18 is formed as the toothed surfaces structure.

Again with reference to shown in the figure 3,4, outside making PU during wheel body 20, the outer wheel body 20 of described PU foaming can insert and be covered with simultaneously convex ring body 15 respectively bore a hole in 17 and each rib 18 of annular recess 18 between, make the marriage relation between outer wheel body 20 and the outer ring surface 14, except the link surface of the two surface contact, more increase respectively bore a hole 17 and each rib 18 in material intersect the link surface of being entangled with mutually, can promote the anchoring strength between outer wheel body 10 and the wheel hub 20 thus, and avoid prior art anchoring strength deficiency cause outer wheel body 10 easily and wheel hub 20 peel off the shortcoming of disengaging.

Again with reference to shown in Figure 4, because two convex ring bodies 15 are symmetricly set on the outer ring surface 14 of wheel frame 11, and each is from the left and right side edge of outer ring surface 14 segment distance 16, so wheel body 20 still can be coated on two convex ring bodies, 15 peripheries fully outside the described PU in the claimed range of safety wheel 1 dimensions, and have suitable thickness, to keep outer wheel body 20 due buffering effects.

Above-mentioned graphic and explanation of taking off only is embodiment of the present utility model, and is non-for limiting embodiment of the present utility model; Generally those skilled in the art comply with feature category of the present utility model, and other equivalence of being done changes or modifies, and all should be encompassed in the claim of following this case.

Claims

1. safety wheel structure, comprise a wheel hub and an outer wheel body, described wheel hub comprises wheel frame, spoke and axle block, and described outer wheel body is directly moulding on the outer ring surface of wheel frame, outer wheel body and wheel hub form integral structure, it is characterized in that: the outer ring surface epirelief of the wheel frame of described wheel hub is put the convex ring body of two left and right lateral symmetry, and each convex ring body each from the left and right side edge of its outer ring surface one segment distance, and equidistant several cross-perforatings of laying on two convex ring bodies; Form an annular recess between left and right again two convex ring bodies, and equidistant several transverse ribs of laying on the described annular recess.

2. safety wheel structure as claimed in claim 1 is characterized in that, described outer wheel body is to make with polyurethane material or other foam material.

3. safety wheel structure as claimed in claim 1 is characterized in that described wheel hub is to make with plastic material.

4. as claim 1 or 3 described safety wheel structures, it is characterized in that described wheel hub adopts injection forming method and makes one-body molded body.