High-tensile spoke

Abstract

A high-tensile spoke, which relates to the technical field of spokes. Such a high-tensile spoke is provided with a spoke rod having a second special-shaped section while ensuring the usage strength of the spoke rod; after a first connecting member is inserted from one end of a first hollow section along the second special-shaped section, a limiting member, which is adapted to the cross-sectional size of a second hollow section, is disposed on the second special-shaped section, such that the limiting member has a reinforcing area when being arranged on the second special-shaped section; and when the first connecting member is subsequently pulled to abut against the limiting member, the reinforcing area limits and tightly presses the joint between the first hollow section and the second hollow section of the first connecting member. Compared with the existing concentric first hollow section and second hollow section, the reinforcing area enables the first connecting member to have a good tensile effect, and the first connecting member does not easily pull away from the spoke rod when excessive tensile force is exerted on the first connecting member by a wheel rim during use, such that the service life of the spoke can be prolonged.

Description

A high tensile strength spoke Technical Field

[0001] The present application relates to the technical field of spokes, and in particular to a spoke with high tensile strength. Background Art

[0002] Spokes are an important part of the wheel set and are the skeleton that supports the entire wheel set. Compared with the rim and hub, spokes may be inconspicuous, but their role in increasing strength and supporting tires cannot be underestimated.

[0003] The existing announcement number is CN205273028U, which is a carbon fiber spoke. It includes a spoke body, one end of which is connected to a first accessory that can be connected to the rim, and the other end is connected to a second accessory that can be connected to the hub. The spoke body is made of carbon fiber, and the connection between the end of the spoke body and the accessory is achieved by bonding.

[0004] Alternatively, as shown in FIG7 , the first accessory is configured as a first hollow segment 21 and a second hollow segment 22, which are concentrically arranged. After the accessory is placed on the spoke body, a yarn strip that matches the cross-sectional size of the second hollow segment 22 is arranged on the spoke to form a boss shape with the spoke body to block and limit the first accessory.

[0005] The above-mentioned spokes all have certain defects when in use. When the connection between the spoke body and the first accessory is bonded, the fixing strength is weak. The distance between the outer circles of the concentrically arranged first hollow section 21 and the second hollow section 22 is relatively small, with a maximum of 0.2 mm, and the size of the second hollow section 22 cannot be increased (when the size of the first accessory is constant, when the size of the second hollow section 22 is increased, a thread will be provided on the outer wall of the first accessory, which may easily cause the first accessory to break). Therefore, the limiting blocking effect of the yarn is poor. During use, the rim can generate excessive pulling force on the first accessory, making the first accessory easily pulled away from the spoke body, resulting in the separation of the two and a short service life. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the present application provides a high-tensile-resistance spoke to solve the problem that during use, the rim can generate tension on the first accessory, causing the first accessory to be easily pulled away from the spoke body, resulting in separation of the two and a short service life.

[0007] To solve the above technical problems, the present application provides the following technical solution: a high-tensile-resistance spoke, comprising a spoke rod, at least one end of which is configured as a second special-shaped segment, the second special-shaped segment having a wind-breaking portion and a leeward portion, and further comprising:

[0008] a first connecting member movably disposed on the second special-shaped segment, having a hollow interior and comprising a first hollow segment and a second hollow segment, wherein the cross-sectional size of the first hollow segment along a direction perpendicular to its length matches the cross-sectional size of the second special-shaped segment, and the cross-sectional size of the second hollow segment along a direction perpendicular to its length is circular, and the cross-sectional area of ​​the second hollow segment is 1.5 to 5 times the cross-sectional area of ​​the first hollow segment;

[0009] A limiting member is provided on the second special-shaped segment and is used to prevent the first connecting member from detaching from the spoke rod. The limiting member is partially located in the second hollow segment, and the limiting member partially located in the second hollow segment is adapted to the second hollow segment in a cross-sectional size along a direction perpendicular to the length of the spoke rod. The cross-section of the second special-shaped segment is projected onto the limiting member along the axis direction thereof to form a projection area, and the projection areas on both sides of the line connecting any point on the wind-breaking part and any point on the leeward part have reinforcement areas. The distance between the outer edge of the projection of the second special-shaped segment of the reinforcement area on the limiting member and the outer edge of the limiting member is not less than 0.2 mm, and the arc length of the reinforcement area on the limiting member is not less than 2 mm.

[0010] Preferably, the limiting member forms a step at a position close to the connection between the first hollow section and the second hollow section.

[0011] Preferably, the connection between the first hollow section and the second hollow section is rounded and fits the step surface.

[0012] Preferably, the two reinforcement areas are symmetrically arranged.

[0013] Preferably, the cross section of the spoke rod is an arc or a combination of an arc and a straight line.

[0014] Preferably, both ends of the spoke rod are set as second special-shaped sections, and the spoke rod also includes a first special-shaped section, which is located between the two second special-shaped sections, and the cross-sections of the first special-shaped section and the second special-shaped section are both teardrop-shaped or elliptical.

[0015] Preferably, the cross-sectional areas of the first special-shaped segment and the second special-shaped segment are equal, and both have a windbreaking portion and a leeward portion, the windbreaking portion has a windbreaking end and a windbreaking edge, the leeward portion has a leeward end and a leeward edge, and the distance between the windbreaking end and the leeward end of the first special-shaped segment is greater than the distance between the windbreaking end and the leeward end of the second special-shaped segment.

[0016] Preferably, the limiting member includes a first yarn and a second yarn, the first yarn is wound around the second special-shaped segment, and the second yarn is wound around the first yarn and the second special-shaped segment to form a step.

[0017] Preferably, it also includes a second connecting member, which is movably provided on another second special-shaped segment, and its interior is hollow, including a third hollow segment and a fourth hollow segment, the cross-sectional size of the third hollow segment along the direction perpendicular to its length is adapted to the cross-sectional size of the other second special-shaped segment, the cross-sectional size of the fourth hollow segment along the direction perpendicular to its length is circular, and is the same as the cross-sectional size of the second hollow segment along the direction perpendicular to its length, and the cross-sectional area of ​​the fourth hollow segment is 1.5 times to 5 times the cross-sectional area of ​​the third hollow segment.

[0018] Preferably, the projected length of the step in a direction perpendicular to the second special-shaped segment is not greater than the length of the first hollow segment.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] While ensuring the strength of the spoke rod, a spoke rod with a second special-shaped section is provided. After the first connecting member is inserted from one end of the first hollow section along the second special-shaped section, a limiting member adapted to the cross-sectional size of the second hollow section is provided on the second special-shaped section, so that the limiting member has a reinforced area when it is provided on the second special-shaped section. When the first connecting member is subsequently pulled to abut against the limiting member, the reinforced area will limit and tighten the connection between the first hollow section and the second hollow section of the first connecting member. Through the reinforced area, the first connecting member has a good tensile strength effect relative to the existing first hollow section and the second hollow section arranged in concentric circles. During use, when the rim generates excessive tension acting on the first connecting member, the first connecting member will not be easily pulled away from the spoke rod, thereby extending the service life of the spokes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of this application;

[0022] FIG2 is a schematic structural diagram of the spoke rod and the first connecting member of the present application;

[0023] FIG3 is a schematic diagram of the structure at C in FIG2 of the present application;

[0024] FIG4 is a schematic diagram of the cross-sectional structure of the first connecting member of the present application;

[0025] FIG5 is a schematic diagram of the left side structure of the first connecting member of the present application;

[0026] FIG6 is a schematic cross-sectional view of the second special-shaped section and the limiting member of the present application;

[0027] FIG7 is a schematic structural diagram of the first hollow section and the second hollow section of the conventional first connecting member when they are arranged concentrically;

[0028] Among them: 1. spoke rod; 11. first special-shaped segment; 12. second special-shaped segment; 2. first connecting piece; 21. first hollow segment; 22. second hollow segment; 3. limiting piece; 31. first yarn; 32. second yarn; 4. second connecting piece. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present application easy to understand, the present application is further explained below in conjunction with specific examples. However, the following examples are only preferred embodiments of the present application, not all of them. Based on the examples in the implementation manner, other examples obtained by those skilled in the art without making any creative work are all within the scope of protection of the present application. The experimental methods in the following examples are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following examples are all commercially available unless otherwise specified.

[0030] As shown in Figures 1 to 6, the present application provides a high-tensile-resistance spoke, including a spoke rod 1, at least one end of which is configured as a second special-shaped section 12, the second special-shaped section 12 having a wind-breaking portion and a leeward portion (after the spoke is mounted on a wheel, during the wheel's movement, the windward side of the spoke is configured as the wind-breaking portion, and the leeward side is configured as the wind-breaking portion), and further including a first connecting member 2 and a limiting member 3;

[0031] The first connecting member 2 is movably mounted on a second special-shaped segment 12. The first connecting member 2 is hollow inside and includes a first hollow segment 21 and a second hollow segment 22. The cross-sectional size of the first hollow segment 21 along a direction perpendicular to its length is adapted to the cross-sectional size of the second special-shaped segment 12. The cross-sectional size of the second hollow segment 22 along a direction perpendicular to its length is circular. The cross-sectional area of ​​the second hollow segment 22 is 1.5 to 5 times the cross-sectional area of ​​the first hollow segment 21. If the cross-sectional area is greater than 5 times, the first connecting member 2 will be too large and will not be able to be properly locked on an existing standard-sized wheel. If the cross-sectional area is less than 1.5 times, the first connecting member 2 will have poor tensile strength and will easily detach from the spoke rod 1.

[0032] The limiting member 3 is provided on the second special-shaped segment 12, and is used to prevent the first connecting member 2 from separating from the spoke rod 1. The limiting member 3 is partially located in the second hollow segment 22, and the limiting member 3 partially located in the second hollow segment 22 is adapted to the second hollow segment 22 in a cross-sectional size along a direction perpendicular to the length of the spoke rod 1. The cross-section of the second special-shaped segment 12 (the cross-section here is the cross-section in the direction perpendicular to the spoke rod 1) is projected onto the limiting member 3 along the axis direction to form a projection area on the outer edge of the limiting member 3. The projection area on both sides of the line connecting any point on the wind-breaking part and any point on the leeward part has a reinforcement area. The distance between the outer edge of the projection of the second special-shaped segment 12 of the reinforcement area on the limiting member 3 and the outer edge of the limiting member 3 is not less than 0.2 mm, and the arc length of the reinforcement area on the limiting member 3 is not less than 2 mm.

[0033] If the distance between the outer edge of the projection of the second special-shaped section 12 of the reinforced area on the limiter 3 and the outer edge of the limiter 3 is less than 0.2 mm, or the arc length of the reinforced area on the limiter 3 is less than 2 mm, then the tensile strength of the first connecting member 2 will not be good enough. On the contrary, if the distance is too large, the first connecting member 2 will be too large, resulting in an inability to lock onto a wheel of existing standard size. If the distance between the outer edge of the projection of the second special-shaped section 12 of the reinforced area on the limiter 3 and the outer edge of the limiter 3 is less than 0.2 mm, or the arc length of the reinforced area on the limiter 3 is less than 2 mm, then the tensile strength of the first connecting member 2 will be poor and it will easily fall off the spoke rod 1.

[0034] Here we take two reinforcement zones as an example;

[0035] The first connecting member 2 here is used to connect the rim. When the size of the first connecting member 2 is the existing standard size, if it is necessary to ensure the strength of the spoke rod 1, a spoke rod 1 with a second special-shaped section 12 is provided. After the first connecting member 2 is inserted from one end of the first hollow section 21 along the second special-shaped section 12, a limiting member 3 that is adapted to the cross-sectional size of the second hollow section 22 is provided on the second special-shaped section 12. Therefore, when the limiting member 3 is provided on the second special-shaped section 12, a reinforced area as shown in the shaded part in Figure 6 is provided. When the first connecting member 2 is subsequently pulled to abut against the limiting member 3, the reinforced area will limit and tighten the connection between the first hollow section 21 and the second hollow section 22 of the first connecting member 2. Through the reinforced area, the first connecting member 2 has a good tensile effect relative to the existing concentrically arranged first hollow section 21 and the second hollow section 22. During use, when the rim generates excessive tension on the first connecting member 2, the first connecting member 2 will not be easily pulled away from the spoke rod 1, which can extend the service life of the spoke.

[0036] Preferably, the two reinforcement areas are symmetrically arranged, so that the support for the first connecting member 2 is more uniform. In this case, the tensile effect of the first connecting member 2 is better than that in the case of an asymmetrical arrangement.

[0037] It should be noted that, when the size of the second special-shaped segment 12 of the spoke rod 1 is determined, a first connecting member 2 with a larger size can also be provided, so that a second hollow segment 22 with a larger cross-section can be opened, so that the cross-sectional area of ​​the second hollow segment 22 is 1.5 times to 5 times the cross-sectional area of ​​the first hollow segment 21 (preferably, the cross-sectional area of ​​the second hollow segment 22 is set to 1.75-2 times the cross-sectional area of ​​the first hollow segment 21, the distance between the outer edge of the projection of the second special-shaped segment 12 of the reinforced area on the limit member 3 and the outer edge of the limit member 3 is 0.2-0.3, the arc length of the reinforced area is 2.2-2.6 mm, and the size of the first connecting member 2 is the existing standard size, and the tensile strength of the first connecting member 2 is the best).

[0038] As shown in FIG3 and FIG4 , the limiting member 3 forms a step at a position close to the connection between the first hollow section 21 and the second hollow section 22 ;

[0039] The shape of the step can be a right-angle bend, an arc, a hypotenuse, etc. By providing the step, the limiting and tightening effect of the limiting member 3 on the first connecting member 2 is further improved.

[0040] Specifically, as shown in Figures 3 and 4, the connection between the first hollow segment 21 and the second hollow segment 22 is chamfered and fits with the step surface, which can maximize the contact area between the connection between the first hollow segment 21 and the second hollow segment 22 and the step surface, thereby increasing the force-bearing area, maximizing the tensile strength, and preventing the first connecting member 2 from being pulled away from the spoke rod 1.

[0041] As shown in FIG2 , the cross section of the spoke rod 1 is an arc or a combination of an arc and a straight line.

[0042] As shown in FIG2 , both ends of the spoke rod 1 are provided with a second special-shaped segment 12 , and the spoke rod 1 further includes a first special-shaped segment 11 , which is located between the two second special-shaped segments 12 , and the cross-sections of the first special-shaped segment 11 and the second special-shaped segment 12 are both teardrop-shaped or elliptical;

[0043] By providing a teardrop-shaped or elliptical spoke rod 1, which is equivalent to the existing round spoke rod 1, it has a good wind-breaking effect and reduces the resistance of the wheel, so that the spokes can meet the performance of wind-breaking and high tensile strength at the same time.

[0044] As shown in FIG2 , the first special-shaped segment 11 and the second special-shaped segment 12 have the same cross-sectional area, and both have a wind-breaking portion and a leeward portion, the wind-breaking portion having a wind-breaking end and a wind-breaking edge, and the leeward portion having a leeward end and a leeward edge, and the distance between the wind-breaking end and the leeward end of the first special-shaped segment 11 is greater than the distance between the wind-breaking end and the leeward end of the second special-shaped segment 12;

[0045] Specifically, the cross-section of the first special-shaped segment 11 is teardrop-shaped, as shown at B in Figure 2, and the cross-section of the second special-shaped segment 12 is teardrop-shaped, as shown at A in Figure 2. The main length of the spoke rod 1 is the first special-shaped segment 11. Through such an arrangement, the first special-shaped segment 11 has a better wind-breaking effect than the second special-shaped segment 12 (because the area of ​​the wind-breaking portion of the first special-shaped segment 11 facing the air is smaller than the area of ​​the wind-breaking portion of the second special-shaped segment 12 facing the air), and the arrangement of the second special-shaped segment 12 can ensure the tensile strength of the connection between the spoke rod 1 and the first connecting member 2 and the second connecting member 4, so that the first connecting member 2 and the second connecting member 4 will not easily detach from the spoke rod 1.

[0046] As shown in FIG3 , the limiting member 3 includes a first yarn strip 31 and a second yarn strip 32 (the thickness of the first yarn strip 31 and the second yarn strip 32 are both 0.1 mm. Thinner multi-layer yarn strips can also be provided. The specific number of yarn strips is not limited). The first yarn strip 31 is wound around the second special-shaped segment 12, and the second yarn strip 32 is wound around the first yarn strip 31 and the second special-shaped segment 12 to form a step.

[0047] After the first connecting member 2 is placed on the spoke rod 1, the first yarn strip 31 is wound on the spoke rod 1. At this time, the first connecting member 2 is located between the first yarn strip 31 and the first special-shaped segment 11. Subsequently, the second yarn strip 32 is aligned and wound from the end of the first yarn strip 31 farthest from the first connecting member 2 (this method can quickly position and wrap the second yarn strip 32), so that the second yarn strip 32 is wound around the first yarn strip 31 and the second special-shaped segment 12;

[0048] It should be noted that after the second yarn 32 is wound, it will form a teardrop or elliptical shape that is relatively enlarged with the cross-section of the second special-shaped segment 12, and then be formed into a circle by a mold, and finally form the step shown in Figure 3. The specific circle is adapted to the cross-section of the second hollow segment 22 and the limiter 3 in Figure 6;

[0049] Normally, the width of the second yarn strip 32 can be set to be 4-4.5 mm larger than the width of the first yarn strip 31 .

[0050] As shown in FIG1 , the second connecting member 4 is further included. The second connecting member 4 is movably provided on the other second special-shaped segment 12. The interior of the second connecting member 4 is hollow and includes a third hollow segment and a fourth hollow segment. The cross-sectional size of the third hollow segment along the direction perpendicular to its length is adapted to the cross-sectional size of the other second special-shaped segment 12. The cross-sectional size of the fourth hollow segment along the direction perpendicular to its length is circular and has the same cross-sectional size as the second hollow segment 22 along the direction perpendicular to its length. The cross-sectional area of ​​the fourth hollow segment is 1.5 to 5 times the cross-sectional area of ​​the third hollow segment.

[0051] The second connecting member 4 is used to connect the hub of the wheel. Its structural principle is similar to that of the first connecting member 2 and will not be elaborated here. It is mainly used to strengthen the tensile strength between the spoke rod 1 and the hub.

[0052] The projected length of the step in a direction perpendicular to the second special-shaped section 12 is no longer than the length of the first hollow section 21 , thereby preventing the yarn from extending out of the first hollow section 21 of the first connector 2 and affecting the overall appearance.

[0053] The spoke rod 1 is made of carbon fiber, and the first connecting member 2 and the second connecting member 4 are made of stainless steel.

[0054] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents. Industrial Applicability

[0055] This application provides a high-tensile-resistance spoke designed to address the problem of existing spokes being easily pulled away from the spoke body during use, resulting in a short service life. By providing a second special-shaped section on the spoke rod and flexibly mounting a first connector and a retaining member, the tensile strength of the spoke is enhanced. The reinforced area of ​​the retaining member effectively prevents the first connector from detaching, preventing it from easily loosening even when excessive tension is applied to the rim. This spoke improves reliability and durability while maintaining strength, making it suitable for the manufacture and use of various wheel sets and possessing broad industrial application value.

Claims

1. A high tensile strength spoke, comprising a spoke rod (1), characterized in that: At least one end of the spoke rod (1) is configured as a second special-shaped section (12), the second special-shaped section (12) having a wind-breaking portion and a leeward portion, and further comprising: A first connecting member (2) is movably arranged on the second special-shaped segment (12), is hollow inside, and comprises a first hollow segment (21) and a second hollow segment (22), wherein the cross-sectional size of the first hollow segment (21) along a direction perpendicular to its length matches the cross-sectional size of the second special-shaped segment (12), the cross-sectional size of the second hollow segment (22) along a direction perpendicular to its length is circular, and the cross-sectional area of ​​the second hollow segment (22) is 1.5 to 5 times the cross-sectional area of ​​the first hollow segment (21); A stopper (3) is provided on the second special-shaped section (12) and is used to prevent the first connecting member (2) from being separated from the spoke rod (1); the stopper (3) is partially located in the second hollow section (22); the stopper (3) partially located in the second hollow section (22) is adapted to the second hollow section (22) in a cross-sectional size along a direction perpendicular to the length of the spoke rod (1); a cross-sectional area of ​​the second special-shaped section (12) is projected onto the stopper (3) along the axis thereof to form a projection area at the outer edge of the stopper (3); the projection areas on both sides of a line connecting any point on the wind-breaking portion and any point on the leeward portion are both provided with a reinforcement area; the distance between the outer edge of the projection of the second special-shaped section (12) on the stopper (3) and the outer edge of the stopper (3) in the reinforcement area is not less than 0.2 mm; and the arc length of the reinforcement area on the stopper (3) is not less than 2 mm.

2. The high tensile strength spoke according to claim 1, characterized in that: The limiting member (3) forms a step at a position close to the connection between the first hollow section (21) and the second hollow section (22).

3. The high tensile strength spoke according to claim 2, characterized in that: The connection between the first hollow section (21) and the second hollow section (22) is rounded and fits the step surface.

4. The high tensile strength spoke according to claim 1, characterized in that: The two reinforcement areas are symmetrically arranged.

5. The high tensile strength spoke according to claim 1, characterized in that: The cross section of the spoke rod (1) is an arc or a combination of an arc and a straight line.

6. The high tensile strength spoke according to claim 5, characterized in that: Both ends of the spoke rod (1) are provided with second special-shaped sections (12); the spoke rod (1) further comprises a first special-shaped section (11); the first special-shaped section (11) is located between two second special-shaped sections (12); and the cross-sections of the first special-shaped section (11) and the second special-shaped section (12) are both teardrop-shaped or elliptical.

7. The high tensile strength spoke according to claim 6, characterized in that: The first special-shaped segment (11) and the second special-shaped segment (12) have equal cross-sectional areas, and both have a wind-breaking portion and a leeward portion, the wind-breaking portion has a wind-breaking end and a wind-breaking edge, the leeward portion has a leeward end and a leeward edge, and the distance between the wind-breaking end and the leeward end of the first special-shaped segment (11) is greater than the distance between the wind-breaking end and the leeward end of the second special-shaped segment (12).

8. The high tensile strength spoke according to claim 2, characterized in that: The limiting member (3) comprises a first yarn strip (31) and a second yarn strip (32), wherein the first yarn strip (31) is wound around the second special-shaped segment (12), and the second yarn strip (32) is wound around the first yarn strip (31) and the second special-shaped segment (12) to form a step.

9. The high tensile strength spoke according to claim 6, characterized in that: The invention also comprises a second connecting member (4), the second connecting member (4) being movably arranged on another second special-shaped segment (12), the interior of which is hollow and comprises a third hollow segment and a fourth hollow segment, the cross-sectional size of the third hollow segment along a direction perpendicular to its length is adapted to the cross-sectional size of the other second special-shaped segment (12), the cross-sectional size of the fourth hollow segment along a direction perpendicular to its length is circular, and is the same as the cross-sectional size of the second hollow segment (22) along a direction perpendicular to its length, and the cross-sectional area of ​​the fourth hollow segment is 1.5 to 5 times the cross-sectional area of ​​the third hollow segment.

10. The high tensile strength spoke according to claim 2, characterized in that: The projected length of the step in a direction perpendicular to the second special-shaped section (12) is no greater than the length of the first hollow section (21).

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