A sealing structure for a vacuum tire wire spoke wheel

Abstract

The technical problem to be solved by the utility model is to provide a vacuum tire wire spoke wheel sealing structure to ensure structural stability and reliable sealing, and reduce processing and installation steps. The structure comprises a spoke cap, spokes, a hub and a rim located on the outer side of the hub, and is characterized in that a spoke hole matching with the spoke cap is arranged on the surface of the rim; the spoke cap is inserted from the outer side of the rim and assembled on the spoke hole, one end of the spoke is connected to the hub, and the other end is threadedly connected to the inner end of the spoke cap; an annular positioning groove is arranged on the outer side of the spoke cap, an X-shaped sealing ring is assembled in the positioning groove, the cross-section of the X-shaped sealing ring is X-shaped, and the X-shaped sealing ring is interference fit with the spoke hole.

Description

Technical Field

[0001] The utility model relates to the technical field of spoke wheels, in particular to a sealing structure of a vacuum tire steel wire spoke wheel. Background Art

[0002] In order to improve the defects of traditional inner and outer tubes, such as easy to burst and heavy weight of cast one-piece wheels, a combination of spoke wheels and vacuum tires was derived. Vacuum tires have high elasticity and wear resistance, good adhesion and heat dissipation performance, especially all-steel radial vacuum wheels, which are economical and durable. Vacuum spoke wheels are increasingly widely used on bicycles and motorcycles.

[0003] The most important technical point of the vacuum spoke wheel is to ensure the sealing between the spokes and the hub to avoid air leakage. The existing anti-leakage structure design is to open a blind hole on the rim to fix the spokes, and the second is to seal the spoke caps that pass through the rim with sealing rings. Regarding the latter design, since the rim deforms from a full circle to an ellipse during use, there is a relative displacement between the spoke caps, the sealing rings, and the rim holes. The O-shaped sealing rings are very easy to wear, resulting in the failure of the sealing function and a short service life. In the prior art, two sealing rings are also used for sealing, which requires processing two positioning grooves on the spoke caps, and the processing and installation time is significantly longer. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a vacuum tire wire spoke wheel sealing structure, which ensures structural stability and reliable sealing and reduces processing and installation steps.

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

[0006] A vacuum tire wire spoke wheel sealing structure, comprising a spoke cap, spokes, a hub and a rim located outside the hub, wherein the surface of the rim is provided with spoke holes matched with the spoke cap;

[0007] The spoke cap is inserted from the outer side of the rim and assembled on the spoke hole, one end of the spoke is connected to the hub, and the other end is threadedly connected to the inner side end of the spoke cap;

[0008] An annular positioning groove is arranged on the outer side of the spoke cap, an X-shaped sealing ring is installed in the positioning groove, the cross section of the X-shaped sealing ring is X-shaped, and the X-shaped sealing ring is interference fit with the spoke hole.

[0009] Furthermore, a limiting stepped hole is provided at the outer end of the spoke hole, and a flange capable of cooperating with the limiting stepped hole is provided on the outer side of the outer end of the spoke cap.

[0010] Furthermore, a mounting hole is provided on the surface of the hub, and a limiting block with a diameter larger than an inner diameter of the mounting hole is provided at one end of the spoke.

[0011] Furthermore, a hexagonal groove is provided on the top of the strip cap.

[0012] Furthermore, the X-shaped sealing ring is made of wear-resistant rubber.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0014] 1. An annular positioning groove is provided on the outer side of the spoke cap, and an X-shaped sealing ring is installed in the positioning groove. The cross section of the X-shaped sealing ring is X-shaped. The X-shaped sealing ring is interference fit with the spoke hole. The X-shaped sealing ring seals the spoke hole through a double lip opening, and the shape is similar to X. Although only one layer of sealing ring is provided, the sealing effect is equivalent to double-layer sealing;

[0015] The utility model can ensure structural stability and reliable sealing, and reduce processing and installation steps;

[0016] 2. A limit step hole is provided at the outer end of the spoke hole, and a flange that can cooperate with the limit step hole is provided on the outer side of the outer end of the spoke cap. The flange cooperates with the limit step hole to improve its stability and avoid looseness;

[0017] 3. A mounting hole is provided on the surface of the hub, and a stopper with a diameter larger than the inner diameter of the mounting hole is provided at one end of the spoke, so that the spoke can be directly passed through the mounting hole to achieve quick positioning and connection, which is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the assembly of the sealing structure of the vacuum tire wire spoke wheel of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal assembly of the sealing structure of the vacuum tire wire spoke wheel of the utility model;

[0020] Figure 3 This is a schematic diagram of the matching of the thread cap and the X-shaped sealing ring of the utility model;

[0021] Figure 4 This is a cross-sectional view of the X-shaped sealing ring of the utility model;

[0022] In the figure: 1, wheel hub, 2, rim, 3, spokes, 4, spoke caps, 5, spoke holes, 6, flange, 7, X-shaped sealing ring, 8, positioning slot. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] like Figure 1-4 As shown, this embodiment discloses a vacuum tire steel wire spoke wheel sealing structure, which mainly includes a spoke cap 4, a spoke 3, a hub 1 and a rim 2, wherein the rim 2 is located outside the hub 1 and coaxially distributed. There are a plurality of spokes 3, and when installing the spokes 3, a mounting hole is processed on the surface of the hub 1, and a stop block having a diameter larger than the inner diameter of the mounting hole is provided at one end of the spoke 3. When the other end of the spoke passes through the mounting hole, the stop block cooperates with the mounting hole to achieve a stop connection between one end of the spoke and the hub 1.

[0026] The spoke holes 5 that match the spoke caps 4 are processed on the surface of the rim 2. The spoke caps 4 are inserted from the outside of the rim 2 and assembled on the spoke holes 5. In order to improve the assembly stability of the spoke caps 4 and the spoke holes 5, the outer ends of the spoke holes 5 are processed with limited stepped holes, and the outer side of the outer end of the spoke caps 4 is provided with flanges 6 that can match the limited stepped holes. The outer side of the spoke caps 4 is processed with an annular positioning groove 8, and the positioning groove 8 is equipped with an X-shaped sealing ring 7. The X-shaped sealing ring 7 is made of wear-resistant rubber, and the cross section of the X-shaped sealing ring 7 is X-shaped. The X-shaped sealing ring 7 is interference-fitted with the spoke holes 5. Finally, the other end of the spoke is connected to the inner thread of the spoke cap 4. In order to facilitate installation, a hexagonal countersunk groove is provided at the top of the spoke cap 4, and the spoke cap 4 is tightened by a wrench.

[0027] With the vacuum tire wire spoke wheel sealing structure described in this embodiment, only one positioning groove 8 needs to be processed on the outer side of the spoke cap 4, and an X-shaped sealing ring 7 is installed in the positioning groove 8. The cross section of the X-shaped sealing ring 7 is X-shaped. The X-shaped sealing ring 7 is interference fit with the spoke hole 5. The X-shaped sealing ring 7 seals the spoke hole 5 through a double lip opening, and the shape is similar to X. Although only one layer of sealing ring is provided, the sealing effect is equivalent to a double-layer seal, thereby ensuring structural stability and reliable sealing, and reducing processing and installation steps.

Claims

1. A vacuum tire wire spoke wheel sealing structure, comprising a spoke cap, spokes, a hub and a rim located outside the hub, characterized in that: The surface of the rim is provided with spoke holes matched with the spoke caps; The spoke cap is inserted from the outer side of the rim and assembled on the spoke hole, one end of the spoke is connected to the hub, and the other end is threadedly connected to the inner side end of the spoke cap; An annular positioning groove is arranged on the outer side of the spoke cap, an X-shaped sealing ring is installed in the positioning groove, the cross section of the X-shaped sealing ring is X-shaped, and the X-shaped sealing ring is interference fit with the spoke hole.

2. The vacuum tire wire spoke wheel sealing structure according to claim 1, characterized in that: The outer end of the spoke hole is provided with a limiting stepped hole, and the outer side of the outer end of the spoke cap is provided with a flange that can cooperate with the limiting stepped hole.

3. The vacuum tire wire spoke wheel sealing structure according to claim 2, characterized in that: A mounting hole is provided on the surface of the hub, and a limiting block with a diameter larger than the inner diameter of the mounting hole is provided at one end of the spoke.

4. The vacuum tire wire spoke wheel sealing structure according to claim 1, characterized in that: The top of the strip cap is provided with a hexagonal sink groove.

5. The vacuum tire wire spoke wheel sealing structure according to any one of claims 1 to 4, characterized in that: The X-shaped sealing ring is made of wear-resistant rubber.

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