Bicycle hub oil injection jig

Abstract

The technical problem to be solved by the utility model is to provide a bicycle hub oil injection jig which can inject oil to two ends of a hub at the same time, does not need to rotate the hub, simplifies operation steps, meets assembly requirements and saves oil injection equipment, and comprises an oil injection base and two oil injection heads, a positioning step for supporting the outer edge of the hub flange is arranged on the inner side wall of the positioning cavity, and a mounting hole is formed in the bottom of the positioning cavity; the oil injection head comprises an oil injection column capable of penetrating through the mounting hole and an oil distribution block arranged at the top end of the oil injection column, an oil guide groove is formed in the oil injection column, and a plurality of oil distribution holes communicated with the oil guide groove are formed in the top face of the oil distribution block.

Description

Technical Field

[0001] The utility model relates to the bicycle hub manufacturing industry, in particular to the technical field of hub tower base and disc brake, and specifically to a bicycle hub oiling jig. Background Art

[0002] The freehub end and the disc brake end of the bicycle hub are both lubricated and filled with oil, but the current operation method of this process is to use the two ends to inject oil separately, install the hub vertically on the support base with one end facing upward, and then use the oiling equipment to inject oil to the oiling surface of this end. Since the oiling surface is an annular surface, the hub needs to be rotated during the oiling process to ensure that the grease fully contacts the oiling surface.

[0003] However, this method is not only repetitive and cumbersome, but also inefficient. It also requires two devices to complete the process (because the oiling surfaces at both ends of the hub are at different heights, two oiling devices are required). In addition, during the rotating operation, the product will tip over due to the center of gravity, resulting in uneven grease. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a bicycle hub oiling jig, which can inject oil to both ends of the hub at the same time without rotating the hub, thus simplifying the operation steps, meeting the assembly requirements and saving oiling equipment.

[0005] The utility model is achieved through the following technical solutions;

[0006] A bicycle hub oiling jig comprises an oiling base and two oiling heads, wherein the oiling base is provided with a positioning cavity, an inner side wall of the positioning cavity is provided with a positioning step for supporting the outer edge of the hub flange, and a mounting hole is provided at the bottom of the positioning cavity;

[0007] The oil filling head comprises an oil filling column which can pass through the mounting hole and an oil dividing block arranged at the top of the oil filling column. An oil guide groove is arranged in the oil filling column, and a plurality of oil dividing holes connected with the oil guide groove are arranged on the top surface of the oil dividing block.

[0008] Furthermore, a flange portion is provided on the outer circumference of the top end of the oil injection column, and a sleeve is provided on the bottom surface of the oil distribution block, and the sleeve is threadedly connected to the outer circumference of the flange portion;

[0009] The bottom surface of the oil separation block and the top end surface of the oil injection column form a transition cavity that connects the oil separation hole and the oil guide groove.

[0010] Furthermore, the oil separation holes are distributed in an annular manner on the top surface of the oil separation block, and the number of the oil separation holes is 10-20.

[0011] Furthermore, the outlet end of the oil separation hole is a bell mouth.

[0012] Furthermore, a retaining ring groove is provided on the outer side of the oil filling column.

[0013] Furthermore, a mounting screw hole is processed at one end of the oil guide groove away from the flange portion.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. First install an oiling head in the mounting hole of the positioning cavity, and then place the hub in the positioning cavity so that the oiling surface at the lower end of the hub contacts the top surface of the oiling block of the oiling head; then insert another oiling head into the upper end of the hub so that its oiling block contacts the oiling surface at the upper end of the hub; the two oiling heads inject grease simultaneously, and the grease contacts the oiling surface through the oil guide groove and the oiling hole, so that the grease is evenly distributed on the corresponding oiling surface of the product;

[0016] The utility model simplifies the operation steps, meets the assembly requirements, and the amount of grease is relatively uniform, while saving an oiling device;

[0017] 2. The oil distributor is threadedly connected to the flange, which is convenient for connection, assembly and replacement of parts. The uniform oil distribution holes can evenly distribute the grease on the oiling surface, ensuring the oiling quality at both ends of the hub;

[0018] 3. The outlet end of the oil distribution hole is a bell mouth, so that the grease can be evenly spread during the oil filling process, thus ensuring the uniformity of the oil filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the bicycle hub oiling jig in use state according to the utility model;

[0020] Figure 2 This is a schematic diagram of the oil filling head of the utility model;

[0021] In the figure: 1. oil filling base, 2. positioning cavity, 3. positioning step, 4. mounting hole, 5. oil filling column, 6. oil distribution block, 7. oil guide groove, 8. mounting screw hole, 9. retaining ring groove, 10. oil distribution hole, 11. bell mouth, 12. flange part, 13. sleeve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] In the description of the utility model, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0024] like Figure 1-2 As shown, this embodiment discloses a bicycle hub oiling jig, including an oiling base 1 and two oiling heads. A circular positioning cavity 2 is processed on the oiling base 1, and an annular positioning step 3 is processed on the inner wall of the positioning cavity 2. When the hub is vertically placed in the positioning cavity 2, the positioning step 3 can support the outer edge of the flange of the hub, and a mounting hole 4 is processed at the bottom of the positioning cavity 2.

[0025] The oiling head is composed of an oiling column 5 and an oiling block 6. The outer diameter of the oiling column 5 is equal to the inner diameter of the mounting hole 4, so that the oiling column 5 can pass through the mounting hole 4. The outer circumference of the top of the oiling column 5 is processed with a flange 12, and an oil guide groove 7 is processed on the axis of the oiling column 5. The oil guide groove 7 is processed with a mounting screw hole 8 at the end away from the flange 12. A retaining ring groove 9 is provided on the outer side of the oiling column 5. The oiling block 6 is a disc structure, and the top surface of the oiling block 6 is processed with annular evenly distributed oiling holes 10. The number of oiling holes 10 is 20, and the outlet end of the oiling hole 10 is designed as a bell mouth 11. Such a design allows the grease to spread evenly during the oiling process, and the oiling uniformity is improved. The bottom surface of the oiling block 6 is provided with a sleeve 13, and the sleeve 13 is threadedly connected to the outer circumference of the flange 12. When the sleeve 13 is threadedly connected to the flange portion 12 , the bottom surface of the oil distribution block 6 and the top end surface of the oil injection column 5 form a transition cavity that connects the oil distribution hole 10 and the oil guide groove 7 .

[0026] The specific working process of the bicycle hub oiling fixture of the utility model is as follows:

[0027] The oil filling base is fixed on the table by M4 hexagon socket screws, and the oil distributor block 6 and the oil filling column 5 are assembled into an oil filling head. One oil filling head is installed in the mounting hole 4 of the positioning cavity 2, and the fixing of the oil filling head to the base is achieved by the retaining ring and the retaining ring groove 9. Then the hub is placed in the positioning cavity 2, so that the oil filling surface at the lower end of the hub contacts the top surface of the oil distributor block 6 of the oil filling head; then another oil filling head is inserted into the upper end of the hub, so that the oil distributor block 6 contacts the oil filling surface at the upper end of the hub; the upper and lower oil pipes are respectively connected to the mounting screw holes 8 of the oil filling column 5, and the two oil filling heads are injected with grease synchronously. The grease enters the transition cavity after passing through the oil guide groove 7, and then contacts the oil filling surface through each oil distributor hole 10, so that the grease is evenly distributed on the corresponding oil filling surface of the product. The utility model simplifies the operation steps, meets the assembly requirements, and the amount of grease is relatively uniform. At the same time, it can save an oil filling device.

Claims

1. A bicycle hub oiling jig, characterized in that: It comprises an oil filling base and two oil filling heads, wherein the oil filling base is provided with a positioning cavity, the inner side wall of the positioning cavity is provided with a positioning step for supporting the outer edge of the hub flange, and the bottom of the positioning cavity is provided with a mounting hole; The oil filling head comprises an oil filling column which can pass through the mounting hole and an oil dividing block arranged at the top of the oil filling column. An oil guide groove is arranged in the oil filling column, and a top surface of the oil dividing block is provided with a plurality of oil dividing holes which are connected with the oil guide groove.

2. The bicycle hub oiling jig according to claim 1, characterized in that: The top outer circumference of the oil injection column is provided with a flange portion, and the bottom surface of the oil distribution block is provided with a sleeve, and the sleeve is threadedly connected to the outer circumference of the flange portion; The bottom surface of the oil separation block and the top end surface of the oil injection column form a transition cavity that connects the oil separation hole and the oil guide groove.

3. The bicycle hub oiling jig according to claim 2, characterized in that: The oil separation holes are distributed in an annular manner on the top surface of the oil separation block, and the number of the oil separation holes is 10-20.

4. The bicycle hub oiling jig according to claim 3, characterized in that: The outlet end of the oil separation hole is a bell mouth.

5. The bicycle hub oiling jig according to claim 2, characterized in that: A retaining ring groove is arranged on the outer side of the oil filling column.

6. The bicycle hub oiling jig according to any one of claims 2 to 5, characterized in that: The oil guide groove is processed with a mounting screw hole at one end away from the flange portion.

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