CN203019968U

CN203019968U - Bearing type plastic wheel

Info

Publication number: CN203019968U
Application number: CN 201220496180
Authority: CN
Inventors: 吴松柏
Original assignee: DONGGUAN RUNFENG METAL PLASTIC Co Ltd
Current assignee: DONGGUAN RUNFENG METAL PLASTIC Co Ltd
Priority date: 2012-09-26
Filing date: 2012-09-26
Publication date: 2013-06-26
Anticipated expiration: 2022-09-26

Abstract

The utility model discloses a bearing type plastic wheel which comprises an inner wheel and an outer wheel connected with the inner wheel. A rotating shaft through hole is formed in the middle of a hub in the middle of the inner wheel, a groove is formed in the middle of a circumferencial face of the inner wheel, and a plurality of concave strips or convex strips are placed in the groove. The circumperencial face of the inner wheel is divided into an inner wheel left circumferencial face and an inner wheel right circumferencial face by the groove. A plurality of connecting holes are formed on the inner side of the inner wheel left circumferencial face and the inner side of the inner wheel right circumferencial face, and the middle portions of the connecting holes are communicated with the groove. The outer wheel is connected at the outer end of the circumferencial face of the inner wheel, and two sides of the outer wheel are used for wrapping the outer ends of the connecting holes of the inner wheel. The bearing type plastic wheel is novel in structure, and the circumferencial face part of the inner wheel and the inner circumferencial face of the outer wheel are enabled to be connected in an interspersed and injection mode. Texture hard materials such as polypropylene (PP) are adopted on the inner wheel, flexible materials such as polyurethane (PU) are adopted on the outer wheel, and the advantages of the PP and the PU are fully acted. The bearing weight of the bearing type plastic wheel is more than two times higher than that of an exiting plastic wheel, and the bearing weight reaches up to 450kg. The bearing type plastic wheel has the advantages of being low in cost and large in carrying capacity.

Description

The bearing type plastic wheel

Technical field

The utility model relates to the wheel for furniture part, relates in particular to a kind of bearing type plastic wheel.

Background technology

the structure of existing plastic wheel as shown in Figure 1, comprise interior take turns 300 with foreign steamer 301, it is interior that to take turns 300 are hard plastics, foreign steamer 301 is the soft plastic material, interiorly take turns the wheel hub 302 that 300 middle parts are provided with evagination, axle center hole 303 is offered at wheel hub 302 middle parts, offer a plurality of connecting bores 305 between periphery 304 at wheel hub 302 and interior the wheel, foreign steamer 301 injection mouldings are connected to the interior periphery of taking turns 304 to wheel hub 302 sides, the interior injection moulding of connecting bore 305 is connected with connecting strap 306, the effect of connecting strap 306 is foreign steamers 301 of holding dual-side, the defective of this structure is there is no to be connected to interior stressed foreign steamer periphery 306 of taking turns periphery 304 to hold, during weight more than bearing 200kg, foreign steamer periphery 306 can protrude outward and break away from and interiorly take turns 300 or plastic deformation occurs, badly influence service life and the quality of plastic wheel, therefore, need to improve the structure of existing plastic wheel.

The utility model content

The purpose of this utility model is, overcomes the defects of prior art, and a kind of bearing type plastic wheel of novel structure is provided.

For achieving the above object, the technical scheme that the utility model provides is as follows: a kind of bearing type plastic wheel, comprise interior the wheel, with the interior foreign steamer that is connected of taking turns, offer the rotating shaft through hole in the middle part of wheel hub in the middle part of interior the wheel, offer a groove in the middle part of interior periphery of taking turns, groove is provided with a plurality of recessed or raised lines, groove is separated into the interior periphery of taking turns interiorly to take turns left periphery and interiorly take turns right periphery, take turns left periphery and interior to take turns right periphery inboard interior, offer a plurality of connecting bores, the middle part of connecting bore and groove UNICOM; Foreign steamer is connected to the interior periphery outer end of taking turns, and the dual-side of foreign steamer coats the interior connecting bore outer end of taking turns.At the groove of interior wheel surface setting by the thickness that increases the foreign steamer contact and produced bounce after making the stressed rear compression effort of giving birth to of foreign steamer be subjected to the elastic space of groove to make the foreign steamer pressurized and restore to the original state.Be to make to be coated on interior hard shell of taking turns and to produce larger occlusal surface the raised line of interior wheel surface or recessed, make wheel produce and produce sliding phenomenon when reducing foreign steamer and rolling and between interior the wheel at the force of rolling friction that produces of rolling.

Interior both sides of taking turns all offer annular groove.Purpose is to prevent that plastic-injection is difficult for cooling generation shrink phenomenon because workpiece is too thick, reduces wheel intensity and alleviate quantity of plastics to reduce costs.

Interior material of taking turns is the PP material, aluminum alloy or cast iron, and the material of foreign steamer is PU material or TPR material.

Foreign steamer is taken turns injection moulding and is connected with interior.

Interior connecting bore of taking turns is 4 to 16.When this makes foreign steamer take turns in coating, connecting strap in connecting bore is tightly held outer wheel tread, make foreign steamer outwardly in order to avoid friction of rolling produces heat, disengaging is interior to be taken turns, and can prevent that foreign steamer from coating the situation generation that interior two sides of taking turns outwards break away from or pop simultaneously.

Interiorly take turns left periphery and interior the wheel offers a plurality of pits or raised line on right periphery,

Usefulness of the present utility model is, novel structure improves on the basis of existing plastic wheel, makes interior periphery part of taking turns and the interspersed injection moulding of foreign steamer inner peripheral surface be connected, the materials such as PP that material is hard are used for interior the wheel, the materials such as PU that are rich in toughness are used for foreign steamer, both advantages are fully played, the weight of load-bearing is existing more than 2 times of plastic wheel, more than can reaching 450kg, the material that expends is but lower than existing plastic wheel, has a cost low, the advantage that load-carrying is large.

Description of drawings

Fig. 1 is the cross-sectional view of existing plastic wheel;

Fig. 2 is bearing type plastic wheel block diagram described in the utility model;

Fig. 3 is the cross-sectional view of bearing type plastic wheel described in the utility model;

Fig. 4 is the interior wheel block diagram of bearing type plastic wheel described in the utility model;

Fig. 5 is the interior wheel front view of bearing type plastic wheel described in the utility model;

Fig. 6 is the interior wheel lateral plan of bearing type plastic wheel described in the utility model.

The specific embodiment

Be further described below in conjunction with accompanying drawing and the preferred embodiment technical scheme with regard to bearing type plastic wheel described in the utility model.

as extremely shown in Figure 6 in Fig. 2, bearing type plastic wheel described in the utility model, comprise interior take turns 1 with interior 1 foreign steamer that is connected 2 of taking turns, interior middle part of taking turns the wheel hub 10 at 1 middle part offers rotating shaft through hole 11, offer a groove 13 at interior 1 periphery 12 middle parts of taking turns, groove 13 is provided with a plurality of recessed or raised lines, the present embodiment is depicted as recessed 131, groove 13 is separated into interior 1 the periphery 12 of taking turns interiorly to take turns left periphery 121 and take turns right periphery 122 with interior, in interior left periphery 121 and interior right periphery 122 inboards of taking turns of taking turns, offer a plurality of connecting bores 14, the middle part of connecting bore 14 and groove 13 UNICOMs, foreign steamer 2 is connected to interior 1 periphery 12 outer ends of taking turns, and the limit, left side 21 of foreign steamer 2 and right edge 22 coat interior 1 connecting bore 14 outer ends of taking turns.

Interior 1 left side, the right side of taking turns offers respectively left annular groove 15, right annular groove 16.

Interior 1 the material of taking turns is the PP material, aluminum alloy or cast iron, and the material of foreign steamer 2 is PU material or TPR material.

Foreign steamer 2 is taken turns 1 injection moulding and is connected with interior.

Interior 1 the connecting bore 14 of taking turns is 4 to 16, and the connecting bore 14 of the present embodiment is 8.

The interior left periphery 121 of taking turns is taken turns right periphery 122 and is offered respectively a plurality of pits or raised line with interior, and the present embodiment is pit 123.

Above-described is only principle of the present utility model and preferred embodiment.Should be pointed out that to those skilled in the art, under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, also should be considered as belonging to protection domain of the present utility model.

Claims

1. bearing type plastic wheel, comprise interior the wheel, with the interior foreign steamer that is connected of taking turns, it is characterized in that: offer the rotating shaft through hole in the middle part of the wheel hub in the middle part of described interior the wheel, offer a groove in the middle part of interior periphery of taking turns, groove is provided with a plurality of recessed or raised lines, groove is separated into the interior periphery of taking turns interiorly to take turns left periphery and interiorly take turns right periphery, take turns left periphery and interior to take turns right periphery inboard interior, offer a plurality of connecting bores, the middle part of connecting bore and groove UNICOM; Foreign steamer is connected to the interior periphery outer end of taking turns, and the dual-side of foreign steamer coats the interior connecting bore outer end of taking turns.

2. bearing type plastic wheel according to claim 1, it is characterized in that: described interior both sides of taking turns all offer annular groove.

3. bearing type plastic wheel according to claim 1, it is characterized in that: described interior material of taking turns is the PP material, aluminum alloy or cast iron, the material of foreign steamer is PU material or TPR material.

4. bearing type plastic wheel according to claim 1 is characterized in that: described foreign steamer is taken turns injection moulding and is connected with interior.

5. according to claim 1,2,3 or 4 described bearing type plastic wheels, it is characterized in that: described interior connecting bore of taking turns is 4 to 16.

6. bearing type plastic wheel according to claim 1 is characterized in that: describedly interiorly take turns left periphery and interior the wheel offers a plurality of pits or raised line on right periphery.