Single-speed transmission chain protective sleeve

Abstract

The utility model belongs to the technical field of chain transmission, and discloses a single-speed transmission chain protective sleeve which comprises a protective sleeve body, the protective sleeve body is of an integrally-formed structure made of soft rubber materials, and the protective sleeve body is of an annular structure connected end to end. The protective sleeve body is composed of protective sleeve side wall bodies (4) on the two sides and a protective sleeve body connecting top (12) connecting the protective sleeve side wall bodies (4) on the two sides. And a limiting raised line (6) is arranged at the edge of the protective sleeve side wall main body (4). According to the scheme, the chain protection sleeve achieves the purposes of being good in protection effect, convenient to disassemble, firm, durable, convenient to produce and capable of reducing cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain drive technical field more specifically, relate to a single -speed drive chain protective sheath. BACKGROUND

[0002] The riding vehicle (such as bicycle or electric power-assisted bicycle etc.) as a kind of green, healthy, environmental protection travel tool becomes the important tool of people's short trip, bicycle as a kind of riding equipment solves the last kilometer problem in commuting in city, convenient environmental protection, in recent years, it is highly respected. As everyone knows, trousers (or skirt) is easy to contact with chain when people ride, can make the oil stain on chain stain on trousers (or skirt), thereby bring trouble for riding personnel. The metal chain protective plate on the market, after long time use, it is easy to deform and rust, and installation and production are inconvenient. INVENTION CONTENTS

[0003] The utility model aims at solving the shortcomings in prior art and provides a single -speed drive chain protective sheath.

[0004] To solve the problems in the background art, the utility model adopts the following technical scheme:

[0005] A single -speed drive chain protective sheath, including protective sheath main part, the protective sheath main part adopts soft rubber material integral molding structure, the protective sheath main part is the annular structure that head is connected to tail, the protective sheath main part is formed by the protective sheath side wall main part of two sides and the protective sheath main part connecting top that the protective sheath side wall main part of two sides is connected;The edge of the protective sheath side wall main part is equipped with limit convex strip.

[0006] As further description of the above technical scheme: the included angle between the protective sheath main part side inner wall of the protective sheath side wall main part of two sides is 4 ° ~ 5 °, the vertical distance between the protective sheath main part connecting top inner wall of the protective sheath main part connecting top inside and limit convex strip is 7 mm ~ 9 mm.

[0007] As further description of the above technical scheme: the thickness of the protective sheath side wall main part is 2 mm ~ 3.5 mm, the protective sheath main part side outer wall of the protective sheath side wall main part and the protective sheath main part connecting top outer wall of the protective sheath main part connecting top adopt arc-shaped transition connection.

[0008] As further description of the above technical scheme: the thickness of the limit convex strip is 0.5 mm ~ 1 mm, and the width of the limit convex strip is 1.5 mm ~ 2 mm.

[0009] As further description of the above technical scheme: the protective sheath main part side inner wall and the protective sheath main part connecting top inner wall are equipped with round angle, and the radius of the round angle is 0.5 mm.

[0010] As a further description of the above technical solutions: the connecting top outer wall of the protective sleeve body is in a circular arc structure, and the vertical distance between the connecting top outer wall of the protective sleeve body and the limiting convex strip is 12-13mm.

[0011] Compared with the prior art, the protective sleeve body has the advantages that:

[0012] The protective sleeve body is integrally formed by using soft rubber material, so that the production is easier, the cost is lower, and the protective sleeve body is more solid and durable.

[0013] The protective sleeve body has a ring structure with a first end connected to a second end, so that the user can conveniently install and remove the protective sleeve body.

[0014] The protective sleeve body can fully wrap the chain, so that the problem of oil stains adhering to the trouser legs of the rider is completely avoided.

[0015] After the protective sleeve body fully wraps the chain, the lubricant on the chain is not easy to adhere to the external dust, so that the chain is protected and is not easy to rust. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The protective sleeve body is intended to be used.

[0017] Figure 2 The protective sleeve body and the sprocket are cooperated.

[0018] Figure 3 The protective sleeve body and the chain are cooperated.

[0019] Figure 4 The protective sleeve body and the chain are cooperated.

[0020] Figure 5 The protective sleeve body is used.

[0021] Figure 6 The protective sleeve body is not installed.

[0022] REFERENCE NUMERALS IN DRAWINGS

[0023] 1, protective sleeve body side outer wall; 2, protective sleeve body connecting top outer wall; 3, round corner; 4, protective sleeve side wall body; 5, protective sleeve body side inner wall; 6, limiting convex strip; 7, sprocket; 8, sprocket tooth; 9, chain; 10, protective sleeve body connecting top inner wall; 11, driven gear; 12, protective sleeve body connecting top. DETAILED DESCRIPTION

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments of the present application belong to the protection scope of the present application.

[0025] Please refer to Figures 1-4 A single-speed transmission chain protective sleeve, the protective sleeve body adopts a soft rubber material integrated structure, the protective sleeve body is a ring structure connected head to tail, the protective sleeve body is composed of two side protective sleeve side wall bodies 4 and protective sleeve body connecting top 12 connecting the two side protective sleeve side wall bodies 4; the edge of the protective sleeve side wall body 4 is provided with a limiting convex strip 6.

[0026] The included angle between the protective sleeve body side inner wall 5 of the two side protective sleeve side wall bodies 4 is 4.5°, the vertical distance between the protective sleeve body connecting top inner wall 10 of the inner side of the protective sleeve body connecting top 12 and the limiting convex strip 6 is 8mm. The thickness of the protective sleeve side wall body 4 is 3mm, and the protective sleeve body side outer wall 1 of the protective sleeve side wall body 4 and the protective sleeve body connecting top outer wall 2 of the protective sleeve body connecting top 12 are connected by a circular arc. The thickness of the limiting convex strip 6 is 0.8mm, and the width of the limiting convex strip 6 is 1.8mm. The protective sleeve body side inner wall 5 and the protective sleeve body connecting top inner wall 10 are provided with a round corner 3, and the radius of the round corner 3 is 0.5mm. The protective sleeve body connecting top outer wall 2 is a circular arc structure, and the vertical distance between the protective sleeve body connecting top outer wall 2 and the limiting convex strip 6 is 12.5mm.

[0027] Please refer to Figure 6 When the bicycle (or electric bicycle) is not installed with the chain protective sleeve of the present scheme, the sprocket 7 is linked with the driven gear 11 through the chain 9, and the whole chain 9 is exposed outside, so that the trousers (or skirt) of the user is easy to contact with the chain 9 when riding, so that the oil stains on the chain 9 can be stained on the trousers (or skirt) of the rider.

[0028] Please refer to Figure 5 When the bicycle (or electric bicycle) is installed with the chain protective sleeve of the present scheme, it can be seen that the chain 9 is completely wrapped by the chain protective sleeve of the present scheme. Because the protective sleeve body only contacts with the chain 9, when the sprocket tooth 8 drives the movement of the chain 9, the protective sleeve body moves with the movement of the chain 9.

[0029] Please refer to Figure 3 And 4 Because of the existence of the limiting convex strip 6, the protective sleeve body is not easy to fall off from the chain 9.

[0030] The above merely describes a preferred embodiment of the present application; the scope of protection of the present application is not limited thereto. Any skilled person in the art, according to the technical scheme and improvement concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the scope of protection of the present application.

Claims

1. A single speed drive chain cover, characterized by: The utility model relates to a protective sleeve, including protective sleeve body, protective sleeve body adopts soft rubber material integral forming structure, protective sleeve body is annular structure connected head and tail, protective sleeve body is by two side protective sleeve side wall body (4) and the protective sleeve body connecting top (12) that links two side protective sleeve side wall body (4), the edge of protective sleeve side wall body (4) is equipped with limiting convex strip (6).

2. A single speed drive chain cover as defined in claim 1, wherein: The included angle between the protective sleeve body side inner walls (5) of the two side protective sleeve side wall bodies (4) is 4°-5°, and the vertical distance between the protective sleeve body connecting top inner wall (10) inside the protective sleeve body connecting top (12) and the limiting convex strip (6) is 7mm-9mm.

3. A single speed drive chain cover as defined in claim 1, wherein: The thickness of the protective sleeve side wall body (4) is 2mm-3.5mm, and the protective sleeve body connecting top outer wall (2) of the protective sleeve side wall body (4) and the protective sleeve body connecting top (12) are connected by a circular arc.

4. A single speed drive chain cover as defined in claim 1, wherein: The thickness of the limiting convex strip (6) is 0.5mm-1mm, and the width of the limiting convex strip (6) is 1.5mm-2mm.

5. A single speed drive chain cover as defined in claim 1, wherein: The protective sleeve body side inner walls (5) and the protective sleeve body connecting top inner wall (10) are provided with a round corner (3), and the radius of the round corner (3) is 0.5mm.

6. A single speed drive chain cover as defined in claim 3, wherein: The protective sleeve body connecting top outer wall (2) is a circular arc structure, and the vertical distance between the protective sleeve body connecting top outer wall (2) and the limiting convex strip (6) is 12-13mm.

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