Chain wheel protective cover convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of chain wheel protective covers, in particular to a chain wheel protective cover convenient to disassemble and assemble. The problems that in the using process of a traditional chain wheel protective cover, after bolts are fixed for a long time, due to stains, rust stains and the like, the connecting positions of the bolts are prone to being clamped, the protective cover is troublesome to disassemble, and therefore convenient disassembly and assembly are inconvenient to achieve are solved. The utility model provides a crankset protective cover convenient to disassemble and assemble. The crankset protective cover comprises a positioning assembly and a limiting assembly. Compared with the problems that in the using process of a traditional chain wheel protective cover, after bolts are fixed for a long time, due to stains, rust stains and the like, the connecting positions of the bolts are prone to being blocked, the protective cover is troublesome to disassemble, and therefore convenient and fast disassembly and assembly are inconvenient to achieve, the chain wheel protective cover is provided with the positioning structure and the limiting structure; the protective shell and the installation position are installed in a limited mode through the limiting structure, so that the purpose of preventing deviation can be achieved, then the positioning structure can be driven to move in two directions by rotating the guiding structure, positioning installation can be conducted through the positioning structure, operation is simple, and therefore the purpose of convenient and fast disassembly and assembly can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of chainring protective covers, in particular to a chainring protective cover which is convenient to assemble and disassemble. Background Art

[0002] The tooth plate assembly of a bicycle comprises a tooth plate, a middle shaft, a left crank and a right crank, wherein the left crank and the right crank are respectively mounted at the two ends of the middle shaft, and the tooth plate is either mounted on the middle shaft or on the left crank (or the right crank), and the chain is wound around the tooth plate, and the middle shaft and the tooth plate are driven to rotate by pedaling the pedals at the ends of the left crank and the right crank, thereby realizing the drive of the chain, and then the rear wheel is driven by the chain, and a tooth plate cover is usually arranged on the periphery of the tooth plate to prevent foreign matter from entering the chain between the teeth of the tooth plate. The utility model relates to the technical field of tooth plate protective cover. With the development of society, the tooth plate protective cover industry is becoming more and more developed, and the tooth plate protective cover industry is becoming more and more developed. The disc guard has also been continuously improved to meet the needs of production. Most sprocket disc guards have the function of anti-collision protection, but the function of convenient disassembly and assembly is not perfect enough, and it is inconvenient to use. The installation of the sprocket disc guard adopts bolt connection to fix the guard directly on the mounting seat. After the bolts are fixed for a long time, the bolt connection is prone to jamming due to stains, rust stains and other reasons. When the bearing needs to be inspected, cleaned, maintained, lubricated, etc., it is troublesome to remove the guard, which is time-consuming and laborious, and it is easy to cause damage to the bearing, bearing seat and the operator's hands, posing a safety hazard, making it inconvenient to achieve convenient disassembly and assembly. Utility Model Content

[0003] In order to overcome the problem of the sprocket wheel protective cover being used, the sprocket wheel protective cover is installed by directly fixing the protective cover on the mounting seat through bolts. After the bolts are fixed for a long time, the bolt joints are prone to getting stuck due to stains, rust and other reasons. When the bearing needs to be inspected, cleaned, maintained, lubricated, etc., it is troublesome to remove the protective cover, which is time-consuming and labor-intensive, and is easy to cause damage to the bearing, bearing seat and operator's hands, posing a safety hazard, making it inconvenient to achieve convenient disassembly and assembly.

[0004] The technical solution of the utility model is: a toothed disc protective cover which is easy to disassemble and assemble, comprising a protective shell, a through slot, a guide component, a positioning component, a fixing component and a limit component; a through slot is opened on the side wall of the protective shell, a guide component with a guiding function is arranged on the side wall of the protective shell, a positioning component with a positioning function is arranged on the side wall of the guide component, a fixing component is arranged on the side wall of the protective shell, and a limit component with a limiting function is arranged on the inner wall of the protective shell.

[0005] Preferably, first, the protective shell is limited and installed at the installation position by a limiting assembly, and then, the positioning assembly can be driven to move in both directions by rotating the guide assembly, and the positioning installation can be performed through the positioning assembly, thereby achieving the purpose of convenient disassembly and assembly, and finally, it is fastened and installed through the fixing assembly.

[0006] Preferably, the guide assembly includes a fixed box, a guide groove and a bidirectional screw; a fixed box is arranged on the side wall of the protective shell, two groups of fixed boxes are arranged, a guide groove is opened inside the fixed box, and a bidirectional screw is arranged inside the guide groove; the bidirectional screw can drive the two groups of guide assemblies to achieve a bidirectional movement effect through the guide groove.

[0007] Preferably, the guide assembly also includes a rotating wheel and a guide block; a guide block is arranged on the side wall of the bidirectional screw rod, and two groups of guide blocks are arranged, the guide block is threadedly connected to the bidirectional screw rod, and both ends of the bidirectional screw rod are rotatably connected to the inner wall of the guide groove, and a rotating wheel is arranged on the side wall of the bidirectional screw rod; the bidirectional screw rod can be driven to rotate by the rotating wheel, and the bidirectional screw rod can drive the two groups of guide blocks to move bidirectionally through the guide groove, and the two groups of guide blocks can respectively drive the two groups of positioning components to move bidirectionally.

[0008] Preferably, the positioning assembly includes a fixed rod and a fixed cylinder; a fixed rod is arranged on the side wall of the guide block, and a fixed cylinder is arranged on the side wall of the fixed rod, and two groups of fixed cylinders are arranged; the guide block can drive the fixed cylinder to move in both directions through the fixed rod, thereby respectively driving the two groups of positioning assemblies to move in both directions.

[0009] Preferably, the positioning assembly also includes a positioning hole, a positioning spring and a positioning rod; a positioning hole is opened on the side wall of the protective shell, a positioning spring is arranged inside the fixing cylinder, a positioning rod is arranged above the fixing cylinder, and one end of the positioning spring is fixedly connected to the bottom end of the positioning rod; the fixing cylinder can drive the positioning rod to move in both directions, and the positioning installation effect can be achieved through multiple sets of positioning rods, thereby achieving the purpose of convenient disassembly and assembly, and when the positioning rod is installed through the positioning hole and the installation hole, the rebound force generated by the elastic deformation of the positioning spring can be used to achieve the effect of buffering protection.

[0010] Preferably, the fixing assembly includes a fixing block, a fixing threaded hole and a fixing bolt; a fixing block is arranged on the side wall of the protective shell, and a plurality of fixing blocks are arranged, a fixing threaded hole is opened inside the fixing block, a fixing bolt is arranged inside the fixing threaded hole, and the fixing bolt is threadedly connected with the fixing threaded hole; through the fixed cooperation between the fixing threaded hole and the fixing bolt, the fixing block can be fixedly installed on the vehicle body, so that the protective shell can be fastened and installed.

[0011] Preferably, the limiting assembly includes a limiting slot and a limiting block; a limiting slot is opened on the side wall of the protective shell, and there are multiple groups of limiting slots; a limiting block is arranged on the inner wall of the protective shell, and there are multiple groups of limiting blocks; by setting multiple groups of limiting blocks and multiple groups of limiting slots, the protective shell can be limited to achieve the effect of installation, thereby achieving the purpose of preventing displacement.

[0012] Beneficial effects of the utility model:

[0013] 1. Compared with the traditional toothed disc protective cover, during use, the toothed disc protective cover is installed by directly fixing the protective cover on the mounting seat through bolt connection. After the bolts are fixed for a long time, the bolt connection is prone to jamming due to stains, rust stains, etc. When the bearing needs to be inspected, cleaned, maintained, lubricated, etc., it is troublesome to remove the protective cover, which is time-consuming and labor-intensive, and is easy to cause damage to the bearing, bearing seat and operator's hands, posing a safety hazard, and thus inconvenient to achieve the problem of convenient disassembly and assembly. The toothed disc protective cover is provided with a positioning structure and a limiting structure. The protective shell is limitedly installed with the limiting structure at the installation position, thereby achieving the purpose of preventing deviation. Then, the positioning structure can be driven to move in both directions by rotating the guide structure, and the positioning structure can be used for positioning and installation. The operation is simple, thereby achieving the purpose of convenient disassembly and assembly.

[0014] 2. First, by setting multiple groups of limit blocks and multiple groups of limit grooves, the protective shell can be fixed and installed in a limited position, so as to achieve the purpose of preventing deviation. Then, the rotating wheel can drive the bidirectional screw to rotate, and the bidirectional screw can drive the two groups of guide blocks to move in both directions through the guide groove. The guide blocks drive the positioning rods to move in both directions through the fixed cylinders. The positioning installation effect can be achieved through multiple groups of positioning rods, so as to achieve the purpose of convenient disassembly and assembly;

[0015] 3. After the positioning rod is installed through the positioning hole and the mounting hole, the rebound force generated by the elastic deformation of the positioning spring can achieve the effect of buffering protection. Finally, the fixing block can be fixed to the vehicle body by fixing the threaded hole with the fixing bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the first three-dimensional structure of a conveniently disassembled and assembled toothed disc protective cover of the utility model;

[0017] Figure 2 Shown is a schematic diagram of the first partial three-dimensional structure of a conveniently disassembled toothed disc protective cover of the utility model;

[0018] Figure 3 Shown is a schematic diagram of the second partial three-dimensional structure of a conveniently disassembled toothed disc protective cover of the utility model;

[0019] Figure 4 Shown is a schematic diagram of the third partial three-dimensional structure of a conveniently disassembled toothed disc protective cover of the utility model;

[0020] Explanation of the accompanying drawings: 1. Guide assembly; 2. Positioning assembly; 3. Fixing assembly; 4. Limiting assembly; 5. Protective shell; 6. Through groove; 101. Guide groove; 102. Bidirectional screw rod; 103. Fixing box; 104. Guide block; 105. Rotating wheel; 201. Fixing rod; 202. Fixing cylinder; 203. Positioning hole; 204. Positioning spring; 205. Positioning rod; 301. Fixing block; 302. Fixing threaded hole; 303. Fixing bolt; 401. Limiting groove; 402. Limiting block. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] See also Figure 1 The utility model provides an embodiment: a toothed disc protective cover which is convenient for assembly and disassembly, comprising a protective shell 5, a through slot 6, a guide component 1, a positioning component 2, a fixing component 3 and a limit component 4; a through slot 6 is opened on the side wall of the protective shell 5, a guide component 1 with a guiding function is arranged on the side wall of the protective shell 5, a positioning component 2 with a positioning function is arranged on the side wall of the guide component 1, a fixing component 3 is arranged on the side wall of the protective shell 5, and a limit component 4 with a limiting function is arranged on the inner wall of the protective shell 5.

[0023] See also Figure 2The guide assembly 1 includes a fixed box 103, a guide groove 101 and a bidirectional screw rod 102; a fixed box 103 is provided on the side wall of the protective shell 5, and the fixed box 103 is provided with two groups, and a guide groove 101 is opened inside the fixed box 103, and a bidirectional screw rod 102 is provided inside the guide groove 101; the bidirectional screw rod 102 can drive the two groups of guide assemblies 1 to achieve a bidirectional movement effect through the guide groove 101; the guide assembly 1 also includes a rotating wheel 105 and a guide block 104; a guide block 104 is provided on the side wall of the bidirectional screw rod 102, and the guide block 104 is provided with two groups, and the guide block 104 is threadedly connected to the bidirectional screw rod 102, and both ends of the bidirectional screw rod 102 are rotatably connected to the inner wall of the guide groove 101 Then, a rotating wheel 105 is provided on the side wall of the bidirectional screw rod 102; the rotating wheel 105 can drive the bidirectional screw rod 102 to rotate, and the bidirectional screw rod 102 can drive two groups of guide blocks 104 to move in both directions through the guide groove 101, and the two groups of guide blocks 104 can respectively drive two groups of positioning components 2 to move in both directions; the positioning component 2 includes a fixed rod 201 and a fixed cylinder 202; a fixed rod 201 is provided on the side wall of the guide block 104, and a fixed cylinder 202 is provided on the side wall of the fixed rod 201, and two groups of fixed cylinders 202 are provided; the guide block 104 can drive the fixed cylinder 202 to move in both directions through the fixed rod 201, thereby respectively driving the two groups of positioning components 2 to move in both directions.

[0024] See also Figure 3-4In this embodiment, the positioning component 2 also includes a positioning hole 203, a positioning spring 204 and a positioning rod 205; a positioning hole 203 is opened on the side wall of the protective shell 5, a positioning spring 204 is arranged inside the fixing cylinder 202, and a positioning rod 205 is arranged above the fixing cylinder 202, and one end of the positioning spring 204 is fixedly connected to the bottom end of the positioning rod 205; the fixing cylinder 202 can drive the positioning rod 205 to move in both directions, and the positioning installation effect can be achieved through multiple groups of positioning rods 205, so as to achieve the purpose of convenient disassembly and assembly. When the positioning rod 205 is installed through the positioning hole 203 and the mounting hole, the rebound force generated by the elastic deformation of the positioning spring 204 can be used to achieve the effect of buffering protection; the fixing component 3 includes a fixing block 301, a fixing threaded hole 302 and a fixing bolt 303; a positioning hole 203 is opened on the side wall of the protective shell 5, and a positioning spring 204 is arranged inside the fixing cylinder 202, and a positioning rod 205 is arranged above the fixing cylinder 202, and one end of the positioning spring 204 is fixedly connected to the bottom end of the positioning rod 205; the fixing cylinder 202 can drive the positioning rod 205 to move in both directions, and the positioning installation effect can be achieved through multiple groups of positioning rods 205, so as to achieve the purpose of convenient disassembly and assembly. When the positioning rod 205 is connected and installed with the mounting hole through the positioning hole 203, the rebound force generated by the elastic deformation of the positioning spring 204 can be used to achieve the effect of buffering protection; the fixing component 3 includes a fixing block 301, a fixing threaded hole 302 and a fixing bolt 303; A fixing block 301 is provided, and the fixing block 301 is provided with multiple groups. A fixing threaded hole 302 is provided inside the fixing block 301, and a fixing bolt 303 is provided inside the fixing threaded hole 302, and the fixing bolt 303 is threadedly connected with the fixing threaded hole 302; through the fixed cooperation between the fixing threaded hole 302 and the fixing bolt 303, the fixing block 301 can be fixedly installed on the vehicle body, so that the protective shell 5 can be fastened and installed; the limiting component 4 includes a limiting groove 401 and a limiting block 402; the side wall of the protective shell 5 is provided with a limiting groove 401, and the limiting groove 401 is provided with multiple groups, and the inner wall of the protective shell 5 is provided with a limiting block 402, and the limiting block 402 is provided with multiple groups; through the setting of multiple groups of limiting blocks 402 and multiple groups of limiting grooves 401, the protective shell 5 can be provided with a limited installation effect, so as to achieve the purpose of preventing deviation.

[0025] When working, firstly, by setting a plurality of groups of limit blocks 402 and a plurality of groups of limit grooves 401, the protective shell 5 can be fixed and installed in a limited position, thereby achieving the purpose of preventing deviation;

[0026] Then, the rotating wheel 105 can drive the bidirectional screw rod 102 to rotate, and the bidirectional screw rod 102 can drive the two sets of guide blocks 104 to move bidirectionally through the guide groove 101. The guide blocks 104 drive the positioning rods 205 to move bidirectionally through the fixing cylinder 202. The positioning installation effect can be achieved through multiple sets of positioning rods 205, so as to achieve the purpose of convenient disassembly and assembly.

[0027] When the positioning rod 205 is butt-jointed with the mounting hole through the positioning hole 203, the elastic deformation of the positioning spring 204 generates a rebound force, thereby achieving a buffer protection effect;

[0028] Finally, the fixing block 301 can be fixedly installed on the vehicle body by fixing the threaded hole 302 and the fixing bolt 303 .

[0029] Through the above steps, first, the protective shell 5 is limited and installed at the installation position by the limiting component 4, so as to achieve the purpose of preventing deviation, and then, the positioning component 2 can be driven to move in both directions by rotating the guide component 1, and the positioning installation can be performed through the positioning component 2, so as to achieve the purpose of convenient disassembly and assembly, and finally, it is fastened and installed through the fixing component 3.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A toothed disc protective cover that is easy to assemble and disassemble, comprising a protective shell (5); Features: The protective shell (5) further comprises a through slot (6), a guide component (1), a positioning component (2), a fixing component (3) and a limiter component (4); the through slot (6) is provided on the side wall of the protective shell (5); the guide component (1) with a guiding function is provided on the side wall of the protective shell (5); the positioning component (2) with a positioning function is provided on the side wall of the guide component (1); the fixing component (3) is provided on the side wall of the protective shell (5); and the limiter component (4) with a limiter function is provided on the inner wall of the protective shell (5).

2. A conveniently disassembled toothed disc protective cover according to claim 1, Features: The guide assembly (1) comprises a fixing box (103), a guide groove (101) and a bidirectional screw rod (102); the fixing box (103) is arranged on the side wall of the protective shell (5), two groups of the fixing boxes (103) are arranged, the inside of the fixing box (103) is provided with a guide groove (101), and the inside of the guide groove (101) is provided with a bidirectional screw rod (102).

3. A conveniently disassembled toothed disc protective cover according to claim 2, Features: The guide assembly (1) also includes a rotating wheel (105) and a guide block (104); the guide block (104) is arranged on the side wall of the bidirectional screw rod (102), and two groups of the guide blocks (104) are arranged. The guide blocks (104) are threadedly connected to the bidirectional screw rod (102), and both ends of the bidirectional screw rod (102) are rotatably connected to the inner wall of the guide groove (101), and the rotating wheel (105) is arranged on the side wall of the bidirectional screw rod (102).

4. A conveniently disassembled toothed disc protective cover according to claim 3, Features: The positioning assembly (2) comprises a fixing rod (201) and a fixing cylinder (202); the fixing rod (201) is arranged on the side wall of the guide block (104), the fixing cylinder (202) is arranged on the side wall of the fixing rod (201), and two groups of the fixing cylinders (202) are arranged.

5. A conveniently disassembled toothed disc protective cover according to claim 1, Features: The positioning assembly (2) also includes a positioning hole (203), a positioning spring (204) and a positioning rod (205); the positioning hole (203) is opened on the side wall of the protective shell (5), the positioning spring (204) is arranged inside the fixing cylinder (202), the positioning rod (205) is arranged above the fixing cylinder (202), and one end of the positioning spring (204) is fixedly connected to the bottom end of the positioning rod (205).

6. A conveniently disassembled toothed disc protective cover according to claim 1, Features: The fixing assembly (3) comprises a fixing block (301), a fixing threaded hole (302) and a fixing bolt (303); a fixing block (301) is arranged on the side wall of the protective shell (5); a plurality of fixing blocks (301) are arranged; a fixing threaded hole (302) is provided inside the fixing block (301); a fixing bolt (303) is provided inside the fixing threaded hole (302); and the fixing bolt (303) is threadedly connected to the fixing threaded hole (302).

7. The easily disassembled toothed disc protective cover according to claim 1, Features: The limiting assembly (4) comprises a limiting groove (401) and a limiting block (402); the limiting groove (401) is provided on the side wall of the protective shell (5), and the limiting groove (401) is provided in multiple groups; the limiting blocks (402) are provided on the inner wall of the protective shell (5), and the limiting blocks (402) are provided in multiple groups.

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