Hard oxidation hanger device for suspension fork tube of bicycle

Abstract

The utility model aims to provide a hard oxidation hanger device for a bicycle suspension front fork tube, solves the problem that the thickness of an oxidation film on the inner wall is too low as the inner wall of the front fork tube cannot directly face a cathode during electrolysis, and comprises an anodic oxidation hanger capable of hanging a plurality of front fork tubes. And the auxiliary cathode hanger comprises a plurality of auxiliary cathode bars which can be inserted into the front fork tube.

Description

Technical Field

[0001] The utility model relates to the production and processing technology of bicycle shock-absorbing front fork tubes, and specifically relates to a hard anodizing fixture device for bicycle shock-absorbing front fork tubes. Background Art

[0002] At present, when producing and processing bicycle shock-absorbing tubes, surface oxidation treatment of the inner and outer walls is required to form an oxide film. The most common oxidation treatment method is to fix the workpiece on the anode in the electrolyte, and through the electrolytic anodic oxidation reaction between the electrolyte and the cathode, a dense anodic oxide film is formed on the inner and outer surfaces of the shock-absorbing front fork tube, and its main component is alumina.

[0003] At present, when a bicycle shock-absorbing tube undergoes electrolytic oxidation, due to the tubular structure of the front fork tube, its inner wall does not directly face the cathode in the electrolyte, and the oxidation reaction during electrolysis is relatively weaker than that of the outer wall, so the inner wall film thickness is relatively thin. When the outer surface film thickness of the shock-absorbing tube after hard anodizing is 25um, the inner surface film thickness is only 8um, and the wear resistance of the inner surface is unqualified. The inner and outer surfaces of this product are functional parts and have high requirements for wear resistance. If the inner surface film thickness is too low, the wear resistance cannot meet the requirements. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a hard anodizing fixture device for bicycle shock-absorbing front fork tubes, so as to improve the problem that the inner wall of the front fork tube cannot directly face the cathode during electrolysis, resulting in too low anodic oxide film thickness on the inner wall.

[0005] The utility model is realized through the following technical solutions:

[0006] A hard anodizing fixture device for bicycle shock-absorbing front fork tubes includes an anodic oxidation fixture capable of hanging multiple front fork tubes, and also includes an auxiliary cathode fixture. The auxiliary cathode fixture includes a plurality of auxiliary cathode rods that can be inserted into the front fork tubes.

[0007] Further, the auxiliary cathode fixture further includes a metal cross bar, and a plurality of metal cantilevers are connected to the metal cross bar. The ends of the metal cantilevers are connected to the auxiliary cathode rods.

[0008] Further, the anodic oxidation fixture includes an anodic conductive beam, an anodic frame, a metal upper support rod, and a metal lower support rod. The top of the anodic frame is connected to the anodic conductive beam. The metal upper support rod and the metal lower support rod are horizontally distributed up and down on the anodic frame. A plurality of metal upper teeth are connected to the metal upper support rod, and a plurality of metal lower teeth are connected to the metal lower support rod. The metal upper teeth and the metal lower teeth cooperate up and down to jointly clamp the front fork tube.

[0009] Further, the metal cross bar is horizontally fixed on the anode frame, and the connection between the metal cross bar and the anode frame is insulated.

[0010] Further, it further includes an auxiliary cathode conductive beam, and a plurality of metal connecting rods are connected to the auxiliary cathode conductive beam. The metal connecting rods vertically penetrate through the anode conductive beam and are fixedly connected to the metal cross bar, and the connection between the metal connecting rods and the anode conductive beam is insulated.

[0011] Further, the material of the anodic oxidation hanger is titanium material, and the auxiliary cathode rod is a lead rod.

[0012] The beneficial effects achieved by the present utility model compared with the prior art are as follows:

[0013] 1. By designing an auxiliary cathode hanger, the auxiliary cathode hanger includes a plurality of auxiliary cathode rods that can be inserted into the front fork tube, so that the inner wall of the front fork tube faces the auxiliary cathode rod, improving the conductivity during electrolysis of the inner wall of the front fork tube, and finally making the thickness of the oxide film on the inner wall and the outer wall of the front fork tube relatively consistent, avoiding too large a gap.

[0014] 2. The auxiliary cathode hanger further includes a metal cross bar, and a plurality of metal cantilevers are connected to the metal cross bar. The ends of the metal cantilevers are connected to the auxiliary cathode rods, with a compact structure, facilitating the connection of multiple auxiliary cathode rods into one body.

[0015] 3. The anodic oxidation hanger includes an anode conductive beam, an anode frame, a metal upper support rod, and a metal lower support rod. A plurality of metal upper clamping teeth are connected to the metal upper support rod, and a plurality of metal lower clamping teeth are connected to the metal lower support rod. The metal upper clamping teeth and the metal lower clamping teeth cooperate up and down to jointly clamp the front fork tube. Such a design can conveniently and quickly clamp the front fork tube, realize the fixation of the front fork tube, and facilitate the insertion of the auxiliary cathode rod into the interior of the front fork tube. Description of the Drawings

[0016] Figure 1 is a three-dimensional schematic diagram of the hard anodic oxidation hanger device for the bicycle shock-absorbing front fork tube of the present utility model;

[0017] Figure 2 is Figure 1 the enlarged schematic diagram of part A in

[0018] In the figure: 1. Auxiliary cathode conductive beam, 2. Anode conductive beam, 3. Anode frame, 4. Metal upper support rod, 5. Metal lower support rod, 6. Metal upper clamping teeth, 7. Metal lower clamping teeth, 8. Metal cross bar, 9. Auxiliary cathode rod, 10. Front fork tube. Detailed Embodiment

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0020] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. The present utility model will be further described below with reference to the drawings and embodiments.

[0021] As Figure 1-2 shown, this embodiment discloses a hard anodizing hanging tool device for a bicycle shock-absorbing front fork tube, which mainly includes an anodic oxidation hanging tool, an auxiliary cathode conductive beam 1, an auxiliary cathode hanging tool, etc. The main structure of the anodic oxidation hanging tool is made of titanium material. The anodic oxidation hanging tool includes an anodic conductive beam 2, an anodic frame 3, a metal upper support rod 4 and a metal lower support rod 5. The top metal hook of the anodic frame 3 is connected to the anodic conductive beam 2. The metal upper support rod 4 and the metal lower support rod 5 are horizontally distributed up and down on the anodic frame 3 and are fixedly connected. 20 - 30 metal upper teeth 6 are fixedly installed on the metal upper support rod 4, and the same number of metal lower teeth 7 are installed on the metal lower support rod 5. The metal upper teeth 6 and the metal lower teeth 7 are aligned up and down, and the metal upper teeth 6 and the metal lower teeth 7 cooperate up and down to jointly clamp the front fork tube 10.

[0022] The auxiliary cathode hanging tool mainly includes a metal cross bar 8 and auxiliary cathode rods 9 equal in number to the metal upper teeth 6, etc. The metal cross bar 8 is horizontally fixed on the anodic frame 3, and the connection between the metal cross bar 8 and the anodic frame 3 is insulated with a 10 mm thick Teflon layer. A plurality of metal cantilevers are fixedly connected to the metal cross bar 8, and the ends of the metal cantilevers are fixedly connected to the auxiliary cathode rods 9 one by one. The auxiliary cathode rods 9 are made of lead rods, and their outer diameters are smaller than the inner diameter of the front fork tube. When the metal upper teeth 6 and the metal lower teeth 7 cooperate up and down to jointly clamp the front fork tube, the auxiliary cathode rods 9 can be inserted into the front fork tube. Three metal connecting rods are connected to the auxiliary cathode conductive beam 1. The metal connecting rods vertically penetrate the anodic conductive beam 2 and are fixedly connected to the metal cross bar 8, and the connection between the metal connecting rod and the anodic conductive beam 2 is insulated.

[0023] The specific working process of the hard anodizing hanging tool device for the bicycle shock-absorbing front fork tube in this embodiment is as follows:

[0024] Insert the upper end of the front fork tube from bottom to top into the auxiliary cathode rod, so that the upper end of the front fork tube abuts against the metal upper clamping teeth. Then press down the end of the metal lower clamping teeth to make it bend downward, so that the metal lower clamping teeth abut against the lower end of the front fork tube, thereby enabling the metal upper clamping teeth and the metal lower clamping teeth to cooperate up and down to jointly clamp the front fork tube. At the same time, the auxiliary cathode rod is inserted into the front fork tube. When all the front fork tubes are assembled on the anodic oxidation hanger, immerse the entire anodic oxidation hanger into the electrolyte. During the electrolytic oxidation treatment, the outer wall of the front fork tube faces the cathode in the electrolytic cell, and the inner wall of the front fork tube faces the auxiliary cathode rod, which improves the electrical conductivity during the electrolysis of the inner wall of the front fork tube, and finally makes the thickness of the oxide film on the inner wall and the outer wall of the front fork tube relatively consistent, avoiding too large a gap. The anodic oxidation of the inner surface and the outer surface of the front fork tube can obtain equal oxide film layers, meeting the wear resistance requirements of the shock absorber tube.

Claims

1. A hard-oxidized hanger device for a bicycle suspension front fork tube, comprising an anodized hanger capable of hanging a plurality of front fork tubes, characterized in that: Also included is an auxiliary cathode hanger, the auxiliary cathode hanger including a plurality of auxiliary cathode rods that can be inserted into the front fork tube; The auxiliary cathode hanger also includes a metal crossbar, a plurality of metal cantilevers are connected to the metal crossbar, and the ends of the metal cantilevers are connected to the auxiliary cathode rod; The anodizing hanger comprises an anode conductive beam, an anode frame, a metal upper support rod and a metal lower support rod. The top end of the anode frame is connected to the anode conductive beam. The metal upper support rod and the metal lower support rod are horizontally distributed on the anode frame from top to bottom. The metal upper support rod is connected to a plurality of metal upper teeth, and the metal lower support rod is connected to a plurality of metal lower teeth. The metal upper teeth and the metal lower teeth cooperate with each other to clamp the front fork tube.

2. The bicycle suspension front fork tube hard oxidation hanger device according to claim 1, characterized in that: The metal cross bar is transversely fixed on the anode frame, and the connection between the metal cross bar and the anode frame is insulated.

3. The bicycle suspension front fork tube hard oxidation hanger device according to any one of claims 1-2, characterized in that: It also includes an auxiliary cathode conductive beam, which is connected to a plurality of metal connecting rods. The metal connecting rods vertically penetrate the anode conductive beam and are fixedly connected to the metal crossbar. The connection between the metal connecting rods and the anode conductive beam is insulated.

4. The bicycle suspension front fork tube hard oxidation hanger device according to any one of claims 1-2, characterized in that: The material of the anodizing hanger is titanium, and the auxiliary cathode rod is a lead rod.

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