Internal brake wheelchair hub
By using gaskets and sealing rings on the plug grooves and plug blocks of the wheelchair hub, the problem of insufficient sealing at the connection between the drum and the bearing is solved, and higher sealing and longer service life are achieved.
Patent Information
- Application Number
- CN202421584127.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-07-05
AI Technical Summary
When the existing wheelchair hubs are spliced and combined, the sealing properties are poor, which can easily allow dust or water to enter the hub, causing rust in the internal structure and reducing service life.
An internal brake wheelchair hub is designed. By setting a rectangular plug groove in the middle of the left end of the drum barrel and forming a shaped plug block at the left end of the drum bearing. Combined with the use of a sealing gasket and a sealing ring, it ensures that the connection between the drum barrel and the drum bearing is tightly sealed to prevent external substances from entering.
It effectively improves the sealing of the connection between the drum and the bearing, prevents dust and water from entering, thereby extending the service life of the drum and maintaining the dryness of the internal structure.
Smart Images
Figure CN222698208U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hubs, in particular to an internal brake type wheelchair hub. Background Art
[0002] The hub, commonly known as the "hub barrel", is the barrel outside the axle that connects the spokes, usually called the axle skin. According to the different arrangement methods of the number of spokes, there are generally 3-way and 5-way arrangements. There are two types of hubs: iron hubs and aluminum hubs. The hub is the core component of the wheelchair wheel, and the quality of the hub affects the stability of the wheelchair.
[0003] However, in actual use, in order to facilitate maintenance or replacement of the hub and the bearing, the hub tube and the bearing are usually spliced together, which results in poor sealing at the joint. Dust or water enters the interior of the hub tube, causing the internal structure to rust, which may reduce or affect the service life of the hub. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the above technical difficulties and provide an internal brake wheelchair hub that enhances the sealing performance of the connection between the hub tube and the bearing.
[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:
[0006] An internal brake wheelchair hub comprises a hub tube and a hub bearing:
[0007] A rectangular plug-in slot is provided in the middle of the left end of the hub tube, and a circular splicing slot is formed at the right end. A pair of supporting sleeves are fixedly provided on the inner side of the hub tube.
[0008] The hub bearing is movably mounted inside the hub tube and movably sleeved on the inner side of the supporting sleeve ring, and the left end of the hub bearing passes through the plug-in slot, and a sealing gasket is arranged on the right side of the plug-in slot;
[0009] A stopper is fixedly arranged on the hub bearing, the stopper is movably installed on the inner side of the splicing groove, and a sealing ring is fixed on the left side of the stopper.
[0010] As an improvement, a rectangular plug-in block is formed at the left end of the hub bearing, the plug-in block movably penetrates the plug-in slot and is plugged into the plug-in slot, and the sealing gasket is sleeved on the plug-in block. The rectangular plug-in block is plugged into the plug-in slot, so that the bearing can drive the hub to rotate.
[0011] As an improvement, a connecting column is fixed to the left end of the plug-in block, a thread is formed on the outer wall of the connecting column, and a locking nut is threadedly sleeved on the connecting column, and the right side of the locking nut is movably connected to the left end of the hub tube. The bearing can be fixed inside the hub tube by matching the locking nut and the stopper.
[0012] As an improvement, the sealing pad and the sealing ring are both rubber washers, and the sealing ring is sleeved on the hub bearing and movably sleeved on the inner side of the splicing groove. The connection between the hub bearing and the hub barrel is sealed to prevent external dust and water from entering the interior of the hub barrel.
[0013] As an improvement, a buffer pad is fixedly arranged on the inner side wall of the support sleeve, and the buffer pad is movably sleeved on the hub bearing, so as to provide buffering between the hub bearings, and the support sleeve can strengthen the support for the bearings.
[0014] The advantage of the utility model over the prior art is that a sealing pad is arranged at the left end of the hub bearing, and a sealing ring is arranged on the left side of the stopper, so that after the hub tube and the hub bearing are assembled, the connection between the two can be sealed to prevent external dust and water from entering the interior of the hub tube through the connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a cross-sectional structural schematic diagram of an internal brake wheelchair hub.
[0016] Figure 2 The utility model is a structural schematic diagram of an internal brake wheelchair hub as viewed from the left.
[0017] As shown in the figure: 1. hub tube; 2. hub bearing; 3. plug-in groove; 4. splicing groove; 5. support ring; 6. sealing gasket; 7. stopper; 8. sealing ring; 9. plug-in block; 10. connecting column; 11. tightening nut; 12. buffer pad. DETAILED DESCRIPTION
[0018] In the description of the present utility model, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.
[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0020] An internal brake wheelchair hub comprises a hub tube 1 and a hub bearing 2. A rectangular plug-in slot 3 is provided through the middle of the left end of the hub tube 1, and a circular splicing slot 4 is formed at the right end. A pair of support collars 5 are fixedly sleeved on the inner side of the hub tube 1. A buffer pad 12 is fixedly provided on the inner side wall of the support collar 5, and the buffer pad 12 is movably sleeved on the hub bearing 2.
[0021] The hub bearing 2 is movably mounted inside the hub tube 1 and movably sleeved on the inner side of the support collar 5, and the left end of the hub bearing 2 passes through the plug-in slot 3, and a sealing gasket 6 is provided on the right side of the plug-in slot 3. A rectangular plug-in block 9 is formed at the left end of the hub bearing 2, and the plug-in block 9 movably passes through the plug-in slot 3 and is plugged and matched with the plug-in slot 3, and the sealing gasket 6 is sleeved on the plug-in block 9. A connecting column 10 is fixed to the left end of the plug-in block 8, and a thread is formed on the outer side wall of the connecting column 10, and a tightening nut 11 is threadedly sleeved on the connecting column 10, and the right side of the tightening nut 11 is movably connected to the left end of the hub tube 1.
[0022] A stopper 7 is fixedly provided on the hub bearing 2, and the stopper 7 is movably mounted on the inner side of the splicing groove 4, and a sealing ring 8 is fixed on the left side of the stopper 7. The sealing gasket 6 and the sealing ring 8 are both rubber gaskets, and the sealing ring 8 is sleeved on the hub bearing 2 and movably sleeved on the inner side of the splicing groove 4.
[0023] When the utility model is implemented:
[0024] like Figure 1As shown, the hub bearing 2 is inserted from the right side of the hub tube 1 so that the plug-in block 9 on the left side of the hub bearing 2 can be inserted into the plug-in groove 3 on the left side of the hub tube 1, and the stopper 7 can be installed on the inner side of the splicing groove 4, and then the tightening nut 11 is rotated and installed on the connecting column 10 so that the right side of the tightening nut 11 can be tightened against the left side of the hub tube 1, and the assembly between the hub bearing 2 and the hub tube 1 can be completed. At this time, the sealing gasket 6 can fit with the inner left side wall of the hub tube 1, and the sealing ring 8 can fit with the inner side of the annular groove 4, so that the connection between the hub tube 1 and the hub bearing can be sealed, so that external dust and water are not easy to enter the hub tube 1 from the connection between the two.
[0025] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. An internal brake wheelchair hub, comprising a hub barrel (1) and a hub bearing (2), characterized in that: A rectangular plug-in groove (3) is provided in the middle of the left end of the hub tube (1), and a circular splicing groove (4) is formed at the right end. A pair of supporting sleeve rings (5) are sleeved and fixedly provided on the inner side of the hub tube (1); The hub bearing (2) is movably mounted inside the hub tube (1) and movably sleeved on the inner side of the support sleeve ring (5), and the left end of the hub bearing (2) passes through the insertion groove (3), and a sealing gasket (6) is provided on the right side of the insertion groove (3); A stopper (7) is fixedly arranged on the hub bearing (2), the stopper (7) is movably installed on the inner side of the splicing groove (4), and a sealing ring (8) is fixed on the left side of the stopper (7).
2. The internal brake wheelchair hub according to claim 1, characterized in that: A rectangular plug-in block (9) is formed at the left end of the hub bearing (2). The plug-in block (9) movably penetrates the plug-in slot (3) and is plugged into and matched with the plug-in slot (3). The sealing gasket (6) is sleeved on the plug-in block (9).
3. The internal brake wheelchair hub according to claim 2, characterized in that: A connecting column (10) is fixed to the left end of the plug-in block (9), a thread is formed on the outer wall of the connecting column (10), and a locking nut (11) is threadedly sleeved on the connecting column (10), and the right side of the locking nut (11) is movably connected to the left end of the hub tube (1).
4. The internal brake wheelchair hub according to claim 1, characterized in that: The sealing pad (6) and the sealing ring (8) are both rubber gaskets, and the sealing ring (8) is sleeved on the hub bearing (2) and movably sleeved on the inner side of the splicing groove (4).
5. The internal brake wheelchair hub according to claim 1, characterized in that: A buffer pad (12) is fixedly arranged on the inner side wall of the support sleeve ring (5), and the buffer pad (12) is movably sleeved on the hub bearing (2).