CN205239814U

CN205239814U - Bicycle front fork structure

Info

Publication number: CN205239814U
Application number: CN201521098902.XU
Authority: CN
Inventors: 金宙渊
Original assignee: TIANJIN PROMADE SPORTS MACHINE Co Ltd
Current assignee: TIANJIN PROMADE SPORTS MACHINE Co Ltd
Priority date: 2015-12-23
Filing date: 2015-12-23
Publication date: 2016-05-18
Anticipated expiration: 2025-12-23

Abstract

The utility model relates to a technical field is made to the bicycle, especially relates to a bicycle front fork structure, include: left branch brace, right branch brace and well pipe, left branch brace, right branch brace with well tub of lower part welding, the front portion of left and right support arm is equipped with the arc arch, the arc arch is inserted the both sides of well pipe and rather than the welding together, well socle portion is the arc, and the both sides of well socle portion are equipped with the water conservancy diversion mouth. The utility model discloses simple structure, the structure of current two support arms of change, is welding the lower part both sides of inserting well pipe with the upper portion of two support arms before the welding, and the front portion that can effectively prevent left and right support arm like this intakes and is corroded, and in order to intake and ponding in the pipe in preventing, the arc extreme lower position well tub of lower part sets up a water conservancy diversion mouth, can effectively discharge ponding like this, prevent that left and right support arm from being corroded.

Description

Front fork structure of bicycle

Technical field

The utility model relates to bicycle manufacturing technology field, relates in particular to a kind of front fork structure of bicycle.

Background technology

Bicycle has been dissolved into as the vehicles in people's life, along with the change of people life style, the various bicycles with certain specific use that obtain that improve taking bicycle as basis enter in our life gradually, for example for the mountain bike of body-building, for improving derailleur of speed etc. Bicycle is mainly made up of body part, running part, undercarriage and safety device, can increase as required some annexes, the parts such as such as shelf, support and bicycle basket. Body part is mainly made up of vehicle frame, front fork, handlebar, saddle dish and front forked assembly etc., frame part is the basic structure body that forms bicycle, also be skeleton and the main body of bicycle, miscellaneous part is to be all also directly or indirectly arranged on vehicle frame, and vehicle frame comprises seat tube, down tube, center pillar, back vent and vertical fork etc. Safety device mainly refers to brake, i.e. brake, and brake is the important device that ensures bicyclist's personal safety. Bicycle front fork is under long-term service condition at present, and the weld between two support arms and middle pipe easily causes ponding, will corrode for a long time solder joint, causes front fork to damage.

Utility model content

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and a kind of front fork structure of bicycle is provided, and prevents that front fork solder joint is corroded, and improves the service life of front fork.

The utility model for achieving the above object, by the following technical solutions:

A kind of front fork structure of bicycle, comprise: left support arm, right support arm and middle pipe, described left support arm, right support arm and the welding of described middle pipe bottom, it is characterized in that: the front portion of described left and right supporting arms is provided with arc convex, described arc convex is inserted into the both sides of described middle pipe and welds together with it, described middle pipe bottom is curved, and the both sides of middle pipe bottom are provided with flow-guiding mouth. The utility model is simple in structure, change the structure of existing two support arms, is welding the both sides, bottom that the top of two support arms are inserted into middle pipe before welding, the front portion water inlet that can effectively prevent like this left and right supporting arms is corroded, the ponding in order to prevent water inlet in middle pipe, in the arc extreme lower position of middle pipe bottom, a flow-guiding mouth is set, can effectively ponding be discharged like this, prevented that left and right supporting arms is corroded.

Preferably, in described middle pipe and described left and right supporting arms, be socketed with protective jacket, the both sides of described protective jacket are with U-shaped mouth. In middle pipe bottom, a protective jacket is set, adopts the material of plastics, can prevent pipe and two positions that support arms weld in rainwater corrosion, and then the service life of improving front fork.

Preferably, the bottom of described left and right supporting arms is welded with respectively terminal pad. Terminal pad is set for being connected with front vehicle wheel, terminal pad middle part arranges a right angle incision, with bottom left, that have support arm welding, can strengthen like this weld strength of terminal pad.

The beneficial effects of the utility model are: the utility model is simple in structure, change the structure of existing two support arms, is welding the both sides, bottom that the top of two support arms are inserted into middle pipe before welding, the front portion water inlet that can effectively prevent like this left and right supporting arms is corroded, the ponding in order to prevent water inlet in middle pipe, in the arc extreme lower position of middle pipe bottom, a flow-guiding mouth is set, can effectively ponding be discharged like this, prevented that left and right supporting arms is corroded.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the structural representation of protective jacket in Fig. 1.

Detailed description of the invention

Describe detailed description of the invention of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment. As shown in Figure 1 to Figure 3, a kind of front fork structure of bicycle, comprise: left support arm 1, right support arm 2 and middle pipe 3, described left support arm, right support arm and the welding of described middle pipe bottom, the front portion of described left and right supporting arms is provided with arc convex 4, described arc convex is inserted into the both sides of described middle pipe and welds together with it, and described middle pipe bottom is curved, and the both sides of middle pipe bottom are provided with flow-guiding mouth 5. The utility model is simple in structure, change the structure of existing two support arms, is welding the both sides, bottom that the top of two support arms are inserted into middle pipe before welding, the front portion water inlet that can effectively prevent like this left and right supporting arms is corroded, the ponding in order to prevent water inlet in middle pipe, in the arc extreme lower position of middle pipe bottom, a flow-guiding mouth is set, can effectively ponding be discharged like this, prevented that left and right supporting arms is corroded.

As shown in Figure 2, in described middle pipe and described left and right supporting arms, be socketed with protective jacket 6, the both sides of described protective jacket are with U-shaped mouth 7. In middle pipe bottom, a protective jacket is set, adopts the material of plastics, can prevent pipe and two positions that support arms weld in rainwater corrosion, and then the service life of improving front fork. The bottom of described left and right supporting arms is welded with respectively terminal pad 8. Terminal pad is set for being connected with front vehicle wheel, terminal pad middle part arranges a right angle incision, with bottom left, that have support arm welding, can strengthen like this weld strength of terminal pad.

The utility model is simple in structure, change the structure of existing two support arms, is welding the both sides, bottom that the top of two support arms are inserted into middle pipe before welding, the front portion water inlet that can effectively prevent like this left and right supporting arms is corroded, the ponding in order to prevent water inlet in middle pipe, in the arc extreme lower position of middle pipe bottom, a flow-guiding mouth is set, can effectively ponding be discharged like this, prevented that left and right supporting arms is corroded.

The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a front fork structure of bicycle, comprise: left support arm, right support arm and middle pipe, described left support arm, right support arm and the welding of described middle pipe bottom, it is characterized in that: the front portion of described left and right supporting arms is provided with arc convex, described arc convex is inserted into the both sides of described middle pipe and welds together with it, described middle pipe bottom is curved, and the both sides of middle pipe bottom are provided with flow-guiding mouth.

2. front fork structure of bicycle according to claim 1, is characterized in that: in described middle pipe and described left and right supporting arms, be socketed with protective jacket, the both sides of described protective jacket are with U-shaped mouth.

3. front fork structure of bicycle according to claim 2, is characterized in that: the bottom of described left and right supporting arms is welded with respectively terminal pad.