CN213472658U

CN213472658U - Joint for tubeless spoked wheel and spoked wheel

Info

Publication number: CN213472658U
Application number: CN202022206869.5U
Authority: CN
Inventors: 田振国
Original assignee: Langfang Jiefeng Automobile Parts Co ltd
Current assignee: Langfang Jiefeng Automobile Parts Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-18
Anticipated expiration: 2030-09-30
Also published as: WO2022067910A1

Abstract

The utility model discloses a connect and spoked wheel for having inner tube formula spoked wheel belongs to wheel technical field, for solving the current poor scheduling problem design of joint sealing performance. The utility model discloses a connect for having inner tube formula spoke wheel includes spoke cap and connecting piece, is provided with location boss and sealing washer on the spoke cap, and the connecting piece is configured to and can connect at the spoke cap from the opposite side of wheel rim when spoke cap from a side-mounting back connecting piece of wheel rim to fix the spoke cap on the wheel rim. The utility model is used for utilizing the fixed spoke cap of connecting piece when joint and the spoke wheel installation of tubeless formula spoke wheel, whether the spoke is exerted the pulling force to the spoke cap and can not change the position of joint for the wheel rim, realized static seal, guarantee that tubeless formula spoke wheel possesses better vacuum gas tightness, the sealing member life-span is longer.

Description

Joint for tubeless spoked wheel and spoked wheel

Technical Field

The utility model relates to the technical field of wheels, especially, relate to a connect and including the spoked wheel that this connects for having tubeless formula spoked wheel.

Background

As shown in fig. 1, in the wheels of motorcycles for road and cross-country racing, it is necessary to provide joints 1 ' between spokes 22 ' and a rim 21 '. Specifically, the joint 1 'is inserted into the mounting seat 23' on the rim 21 ', one end of the spoke 22' is inserted into the opening at the end of the joint 1 ', and the spoke 22' is fixed on the rim 21 'by the joint 1', so that the spoked wheel is integrally formed.

The existing spoke wheel has no inner tube, and needs to be sealed by abutting an O-shaped sealing ring 11 ' on a joint 1 ' against the inner wall of a mounting seat 23 '. In order to avoid the separation of the O-shaped sealing ring 11 ' and the mounting seat 23 ', a limiting boss 12 ' and a limiting elastic ring 13 ' are respectively arranged on the joint 1 '. When the connector is installed, the connector 1 'is firstly arranged in the installation seat 23' in a penetrating mode, the bottom surface of the limiting boss 12 'abuts against the top surface of the installation seat 23', the O-shaped sealing ring 11 'is located in the installation seat 23', and then the limiting elastic ring 13 'is sleeved on the connector 1'. In order to avoid the limit elastic ring 13 'from sliding along the joint 1', a limit groove is arranged on the joint 1 ', and the limit elastic ring 13' is clamped in the limit groove.

Because of being limited by the machining precision, certain machining error exists in the height of mount pad 23 ', and certain machining error also exists in the distance between the bottom surface of spacing boss 12' and the spacing recess to lead to the unable butt in the upper and lower both ends of mount pad 23 'of spacing boss 12' and spacing recess after the installation, connect 1 'to have certain displacement space along the axis direction in mount pad 23', sealed effect is poor promptly. In the prior art, the spoke 22 ' is required to generate a downward pulling force on the joint 1 ', so that the bottom surface of the limit boss 12 ' is firmly abutted against the top surface of the mounting seat 23 ', and the joint 1 ' does not move along the axis, thereby improving the sealing performance. The drawback of this construction is that once the spokes 22 'break, the joint 1' still moves along the axis and the sealing effect is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a better joint that is used for tubeless formula spoked wheel of sealing performance.

Another object of the present invention is to provide a spoked wheel capable of achieving static sealing.

To achieve the purpose, on one hand, the utility model adopts the following technical scheme:

a joint for a tubeless spoked wheel comprising a spoke cap provided with a locating boss and a sealing ring, and a connecting member configured to be connectable to the spoke cap from one side of the rim when the spoke cap is mounted from the other side of the rim, thereby securing the spoke cap to the rim.

In particular, the joint further comprises a sealing cover, the sealing cover can be fixed on the spoke cap by the connecting piece, and the sealing ring is located between the positioning boss and the sealing cover.

Particularly, the sealing cover comprises a cylindrical cover main body, a connecting piece limiting step is formed at one end of the interior of the cover main body, a spoke cap limiting step is formed at the other end of the interior of the cover main body, and a sealing boss is formed between the connecting piece limiting step and the spoke cap limiting step; the inner diameter Ht of the sealing boss is smaller than the inner diameter Hj of the connecting piece limiting step and is smaller than the inner diameter Hm of the spoke cap limiting step.

In particular, the outer wall surface of the end of the cover body provided with the spoke cap limiting step forms a sealing inclined surface, and the diameter of the sealing inclined surface at the position closer to the sealing ring is smaller.

Particularly, a sealing cover supporting part is formed on one side end of the spoke cap, and the bottom surface of the sealing boss presses the top surface of the sealing cover supporting part.

In particular, the sealing cover is made of an elastic material or of a metal material.

In particular, the sealing ring is an O-ring.

Particularly, the connecting piece is a bolt screwed into the end of the spoke cap or a nut sleeved on the spoke cap.

Particularly, a groove is formed in the spoke cap, and the sealing ring is sleeved in the groove.

On the other hand, the utility model adopts the following technical scheme:

a spoked wheel comprising a rim and also comprising a joint as described above for a tubeless spoked wheel, the rim being provided with a through hole for mounting the joint, the spoke cap being at least partially inserted into the through hole from one side of the rim, the connecting element being connected to the spoke cap from the other side of the rim to fixedly connect the joint to the rim.

Particularly, the joint still includes sealed lid, sealed lid includes the lid main part of tube-shape, the outer wall surface that is provided with the one end of the spacing step of spoke cap in the lid main part forms sealed inclined plane, the top inner wall of through-hole is formed with the butt inclined plane, sealed inclined plane laminating is in on the butt inclined plane.

The utility model discloses a connect for having inner tube formula spoke wheel includes spoke cap and connecting piece, utilizes the fixed spoke cap of connecting piece during the installation, whether the spoke is exerted the pulling force to the spoke cap and can not change the position of joint for the wheel rim, has realized static seal, guarantees that having inner tube formula spoke wheel possesses better vacuum gas tightness, and the sealing member life-span is longer.

The utility model discloses the spoke wheel includes foretell joint that is used for tubeless formula spoke wheel, utilizes the fixed spoke cap of connecting piece to with connecting fixed connection on the rim, realized static seal, sealing member life is longer, and the vacuum gas tightness of tubeless formula spoke wheel is better.

Drawings

FIG. 1 is a schematic view of a prior art fitting mounting arrangement;

fig. 2 is a schematic structural diagram of a joint according to an embodiment of the present invention;

FIG. 3 is an axial cross-sectional view of a seal cap according to an embodiment of the present invention;

fig. 4 is an axial cross-sectional view of the joint and the rim according to the first embodiment of the present invention after being mounted;

fig. 5 is a schematic structural diagram of a joint according to a second embodiment of the present invention;

fig. 6 is a second schematic structural diagram of a joint according to a second embodiment of the present invention.

In the figure:

1. a spoke cap; 2. a sealing cover; 3. a connecting member; 4. a rim; 11. positioning the boss; 12. a seal ring; 13. a groove; 14. a seal cover support portion; 15. blind hole for mounting spoke; 16. an external thread; 21. a cover main body; 22. a connecting piece limiting step; 23. spoke cap limiting steps; 24. sealing the boss; 25. sealing the inclined plane; 41. a through hole; 42. abutting against the inclined plane;

1', a joint; 11', O-shaped sealing rings; 12', a limit boss; 13', a limiting elastic ring; 21', a rim; 22', spokes; 23' and a mounting seat.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example one

The present embodiment discloses a joint for tubeless spoked wheels and a spoked wheel. As shown in fig. 2 to 4, the spoked wheel comprises a rim 4, nipples and spokes (not shown). The joint comprises a spoke cap 1 and a connecting piece 3, wherein the connecting piece 3 is a bolt. The bolt can be screwed in from the end of the spoke cap 1, thereby fixing the spoke cap 1. The spoke cap 1 is provided with a positioning boss 11 and a sealing ring 12, and the sealing ring 12 is positioned between the positioning boss 11 and the connecting piece 3; the bottom of the spoke cap 1 is provided with a spoke mounting blind hole 15 for mounting a spoke. The rim 4 is provided with a through hole 41 for fitting the joint, and the spoke cap 1 is first partially inserted into the through hole 41 from the outer side of the rim 4 and then the spoke cap 1 is locked by the connecting member 3, thereby firmly and fixedly connecting the joint to the rim 4. The number of the seal rings 12 is not limited, and one seal ring 12 or a plurality of seal rings 12 can be sleeved on the spoke cap 1.

The spoke cap 1 is locked and fixed on the rim 4 through the connecting piece 3, the position of the joint relative to the rim 4 cannot be changed no matter whether a spoke applies pulling force to the spoke cap 1 or not, static sealing is achieved, the tubeless spoke wheel is guaranteed to have better vacuum airtightness, and the service life of a sealing piece is longer.

In order to improve the airtightness of the joint, the joint further comprises a sealing cap 2, and a sealing ring 12 is located between the positioning boss 11 and the sealing cap 2. When the wheel rim is installed, the spoke cap 1 and the sealing cover 2 are respectively placed on the inner side and the outer side of the wheel rim 4, and then the connecting piece 3 sequentially penetrates through the sealing cover 2 and the spoke cap 1 and is locked, so that the joint is fixedly connected to the wheel rim 4.

The specific structure of the seal cover 2 is not limited, and the sealing performance can be realized. Preferably, as shown in fig. 3, the sealing cover 2 includes a cylindrical cover main body 21, a connector-defining step 22 is formed at one end of the inside of the cover main body 21, a spoke-cap-defining step 23 is formed at the other end, and a sealing boss 24 is formed between the connector-defining step 22 and the spoke-cap-defining step 23. The inner diameter Ht of the sealing boss 24 is smaller than the inner diameter Hj of the connecting piece limiting step 22 and smaller than the inner diameter Hm of the spoke cap limiting step 23, the inner diameter Ht of the sealing boss 24 is slightly larger than the diameter of the connecting piece 3, the connecting piece 3 is allowed to pass through, and simultaneously the connecting piece and the spoke cap 1 are respectively contacted in a large area as far as possible, so that the sealing performance is improved.

In order to avoid the sealing boss 24 from bending under the pressure of the connecting piece 3 and being incapable of sealing, the sealing cover supporting part 14 is formed at the end of the spoke cap 1 on the side far away from the spoke installation blind hole 15, and the bottom surface of the sealing boss 24 is pressed on the top surface of the sealing cover supporting part 14 after being locked, so that the air tightness is good.

In order to improve the vacuum tightness between the sealing cover 2 and the rim 4, a sealing slope 25 is formed on the outer wall surface of the bottom end of the cover main body 21 (the end where the spoke cap retaining step 23 is provided), and the diameter of the sealing slope 25 is smaller at a position closer to the sealing ring 12. The inner wall of the top of the through hole 41 of the rim 4 is formed with an abutting inclined surface 42, when the rim is mounted, the bottom end of the conical cover main body 21 is placed in the top of the funnel-shaped through hole 41, the sealing inclined surface 25 is tightly attached to the abutting inclined surface 42 after the connecting piece 3 is screwed, and the sealing performance is good.

The material for preparing the sealing cover 2 is not limited, and good sealing performance can be realized. Preferably, the sealing cover 2 is made of a metal material, such as aluminum alloy or stainless steel. The strength of the sealing cover 2 is higher, the shape is more stable, the manufacturing cost is low, and the disassembly and the assembly are convenient.

The sealing cover 2 may also be made of an elastic material, such as rubber. The sealing cover 2 can deform to a certain degree under the extrusion of the connecting piece 3, and particularly, the sealing boss 24 between the connecting piece 3 and the spoke cap 1 can correspondingly change the thickness according to the actual sizes of the connecting piece 3 and the spoke cap 1, so that the gap between the connecting piece 3 and the spoke cap 1 and the gap at the installation position of the joint and the rim 4 are respectively filled, the sealing performance is improved, and the requirement on the processing precision is reduced.

On the basis of the above structure, the sealing ring 12 is an O-ring made of an elastic material or other parts with sealing performance, so that the sealing ring is convenient to mount on the spoke cap 1, and the periphery of the sealing ring 12 can be better abutted against the inner wall of the through hole 41, thereby ensuring good sealing performance. The connecting piece 3 is preferably a bolt, such as an M4 screw or an M6 screw, and is convenient to use and low in manufacturing cost.

In order to better position the sealing ring 12 and avoid the reduction of sealing performance caused by the movement of the sealing ring 12 along the outer edge surface of the spoke cap 1, a groove 13 can be formed on the spoke cap 1, the sealing ring 12 is sleeved in the groove 13, and the sealing ring 12 is limited by the groove 13. When a plurality of sealing rings 12 are provided, a plurality of grooves 13 may be correspondingly formed on the spoke cap 1.

Example two

This embodiment discloses a joint and a spoked wheel for tubeless spoked wheels, whose structure is substantially the same as the first embodiment, except that: as shown in fig. 5, the connecting member 3 is a nut fitted over the spoke cap 1, and the outer peripheral wall of the spoke cap 1 is provided with an external thread 16 for engaging with the nut. When the wheel spoke is installed, the columnar spoke cap 1 is arranged in the through hole 41 of the wheel rim 4 in a penetrating mode, the sealing ring 12 on the spoke cap 1 is located in the through hole 41, the positioning boss 11 abuts against one end of the through hole 41, and the nut sleeved on the spoke cap 1 abuts against the other end of the through hole 41.

The spoke cap 1 is locked on the rim 4 by the nut, the position of the joint relative to the rim 4 cannot be changed no matter whether the spoke applies pulling force to the spoke cap 1 or not, static sealing is also realized, the tubeless spoke wheel is ensured to have better vacuum airtightness, and the service life of the sealing element is longer.

The specific location of the positioning boss 11 on the spoke cap 1 is not limited. In fig. 5, the positioning boss 11 is arranged at the end far away from the spoke mounting blind hole 15, the outer peripheral wall near the spoke mounting blind hole 15 is provided with an outer thread 16, and the sealing ring 12 is arranged between the positioning boss 11 and the outer thread 16. During installation, the spoke cap 1 penetrates into the through hole 41 from the outer side of the rim 4, the bottom surface of the positioning boss 11 abuts against the top of the through hole 41, the nut is sleeved on the spoke cap 1 from the spoke installation blind hole 15 and is in screwed connection with the external thread 16, and therefore the spoke cap 1 is fixed on the rim 4.

Of course, as shown in fig. 6, it is also possible to provide the external thread 16 on the outer peripheral wall of the end far from the spoke mounting blind hole 15, provide the positioning boss 11 in the middle of the outside of the spoke cap 1 or at a position near the spoke mounting blind hole 15, and locate the seal ring 12 between the positioning boss 11 and the external thread 16. During installation, the spoke cap 1 penetrates into the through hole 41 from the inner side of the rim 4, the top surface of the positioning boss 11 abuts against the bottom of the through hole 41, and a nut (a nut can also be used in the case) screws the external thread from the outer side of the rim 4, so that the spoke cap 1 is fixed on the rim 4, and static sealing is realized.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A joint for tubeless spoked wheels, characterized in that it comprises a spoked cap (1) and a connecting element (3), said spoked cap (1) being provided with a positioning boss (11) and a sealing ring (12), said connecting element (3) being configured such that, when said spoked cap (1) is mounted from one side of a rim (4), said connecting element (3) can be connected to said spoked cap (1) from the other side of said rim (4), so as to fix said spoked cap (1) on said rim (4).

2. A joint for tubeless spoked wheels according to claim 1, characterized in that it further comprises a sealing cover (2), said connecting element (3) being able to fix said sealing cover (2) to said spoked cap (1), said sealing ring (12) being located between said positioning boss (11) and said sealing cover (2).

3. A joint for a tubeless spoked wheel according to claim 2, characterized in that the sealing cover (2) comprises a cylindrical cover body (21), the cover body (21) being internally formed with a connector-defining step (22) at one end and a spoke-cap-defining step (23) at the other end, a sealing boss (24) being formed between the connector-defining step (22) and the spoke-cap-defining step (23); the inner diameter Ht of the sealing boss (24) is smaller than the inner diameter Hj of the connecting piece limiting step (22) and smaller than the inner diameter Hm of the spoke cap limiting step (23).

4. A joint for tubeless spoked wheels according to claim 3, characterized in that the outer wall surface of the end of the cover body (21) where the spoke cap retaining step (23) is provided forms a sealing bevel (25), the diameter of the sealing bevel (25) being smaller at the position closer to the sealing ring (12).

5. A joint for tubeless spoked wheels according to claim 3, characterized in that a seal cover support (14) is formed on one side end of the spoked cap (1), the bottom surface of the seal boss (24) being pressed against the top surface of the seal cover support (14).

6. A joint for tubeless spoked wheels according to any of claims 2 to 5, characterized in that said sealing cover (2) is made of elastic material or of metal material.

7. A joint for tubeless spoked wheels according to any of claims 1 to 5, characterized in that said connecting element (3) is a bolt screwed into the end of the spoked cap (1) or a nut fitted over the spoked cap (1).

8. A joint for a tubeless spoked wheel according to any one of claims 1 to 5, characterized in that the spoked cap (1) has a groove (13) formed therein, the sealing ring (12) being fitted in the groove (13).

9. A spoked wheel comprising a rim (4), characterized in that it further comprises a joint for a tubeless spoked wheel according to any one of claims 1 to 8, said rim (4) being provided with a through hole (41) for mounting said joint, said spoked cap (1) being at least partially inserted into said through hole (41) from one side of said rim (4), said connecting element (3) being connected to said spoked cap (1) from the other side of said rim (4) to fixedly connect said joint to said rim (4).

10. A wheel according to claim 9, wherein said joint further comprises a sealing cover (2), said sealing cover (2) comprising a cylindrical cover body (21), an outer wall surface of one end of said cover body (21) provided with a spoke cap stop step (23) forming a sealing bevel (25), an inner wall surface of a top portion of said through hole (41) forming an abutment bevel (42), said sealing bevel (25) fitting on said abutment bevel (42).