CN2228155Y

CN2228155Y - One-way chain wheel

Info

Publication number: CN2228155Y
Application number: CN95215466U
Authority: CN
Inventors: 尹衍标
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-07
Filing date: 1995-07-07
Publication date: 1996-05-29
Anticipated expiration: 2005-07-07

Abstract

The utility model relates to a one-way chainwheel which is mainly composed of a rotary shaft, a bolt passing through the rotary shaft and a chainwheel sheathed on one side of the rotary shaft, wherein, one end of the rotary shaft is provided with a step-shaped clutch part of which the diameter is decrescent and a rotary shaft part. The chainwheel is sheathed on the rotary shaft part on one side of the rotary shaft by an outwards projected sleeve barrel of the chainwheel and is positioned on a positioning slot at the tail end of the rotary shaft partby a C-shaped ring. The are sheathed with torsion springs which are in stationary fit with the clutch part are sheathed on the outer margin of a clutch and the outer margin of the sleeve barrel part; the torsion springs are connected to positioning holes of the chainwheel by rotating arms with transverse torsion. When the chainwheel and the torsion springs are rotated in the positive direction or in the reverse direction, the rotary shaft can be respectively pressed or loosened to achieve the goal of unidirectional rotation.

Description

One-way chain wheel

The utility model relates to a kind of One-way chain wheel, belongs to a kind of transmission device.

Generally at an end of the rotating shaft 8 of vehicle rear wheel 51, directly install One-way chain wheel 9 additional, drive with chain 6, with the one-way rotation of control rotating shaft 8, as shown in Figure 1, 2, but this device must seal unidirectional spinal plate 91 and jacking block 92, complex structure in sprocket wheel 9, the cost height, when spinal plate 91 dallied with jacking block 92, knocking noises can take place with jacking block 92 in spinal plate 91, and were very inconvenient.

The purpose of this utility model is that a kind of improved One-way chain wheel will be provided, and it is simple in structure, and cost is low, and idle running the time can not produce noise.

The purpose of this utility model is achieved in that this One-way chain wheel is mainly by rotating shaft, the bolt that passes rotating shaft constitutes with the sprocket wheel that is placed in rotating shaft one side, one end of rotating shaft has diameter gradually little stepped clutch part and shaft, sprocket wheel be placed on the shaft of rotating shaft one side with the sleeve part of its outside projection and with C shape loop mapping on the locating slot of shaft end, on the outer rim of clutch part and sleeve part, be with torsion spring, be stationary fit between torsion spring and clutch part, torsion spring is connected on the positioning hole of sprocket wheel with horizontal reverse arm, when sprocket wheel and torsion spring in the same way or during reverse rotation, the rotating shaft that can compress respectively or get loose reaches the purpose of one-way rotation.

The utility model advantage:

1, simple in structure, various assemblies connections are general technology, manufacture easily, and cost is low, promotes the use of easily.

2, borrow the clutch action of torsion spring, sprocket wheel can drive the firm rotation synchronously of rotating shaft rapidly when compressing, and when spring gets loose, wheel shaft idle running and noise free is produced, and is easy to use.

The utility model concrete structure is provided by following examples and accompanying drawing thereof:

Fig. 1 is existing vehicle rear axle One-way chain wheel stereo appearance figure

Fig. 2 is existing chain sprocket structure schematic representation

Fig. 3 is the utility model embodiment stereo appearance figure

Fig. 4 is the utility model stereo appearance figure

Fig. 5 is the utility model three-dimensional exploded view

Fig. 6 is the utility model sectional view

Fig. 7 is that the utility model adopts left-handed torque spring to compress drive rotating shaft action schematic representation

Fig. 8 is 8-8 sectional drawings of Fig. 7

Fig. 9 is the utility model rotating shaft idle running action schematic representation when adopting left-handed torque spring to get loose

Figure 10 is 10-10 sectional drawings of Fig. 9

Stereogram when Figure 11 is the utility model usefulness dextrorotation torque spring

Figure 12 is the utility model rotating shaft idle running action schematic representation when adopting the dextrorotation torque spring to get loose

Figure 13 is 13-13 sectional drawings of Figure 12

Figure 14 is that the utility model adopts the dextrorotation torque spring to compress drive rotating shaft action schematic representation

Figure 15 is 15-15 sectional drawings of Figure 14

Describe in detail below in conjunction with accompanying drawing

With reference to Fig. 1,2 is existing chain sprocket structure situation, and this sprocket wheel is installed on the vehicle frame 52, and the rear axle runner 51 that drives sprocket wheel car 5 rotates, because of must seal unidirectional spinal plate 91 and jacking block 92, complex structure in this sprocket wheel 9; Knocking noise can take place during runner 51 idle running in the cost height.

The utility model structure, referring to accompanying

drawing

3,4,5,6, this One-way chain wheel by rotating shaft 1, pass the bolt 6 in the heart hole 14 of rotating shaft 1, be placed in the bearing 7,7 ' and be fixed on the nut of using on the vehicle frame 61 and constitute at sprocket wheel 2, the bolt two ends of rotating shaft one side, one end of rotating shaft 1 has stair-stepping clutch part 11 of the gradually little one-tenth of diameter and shaft 12, is provided with locating slot 13 at shaft 12 ends;

Sprocket wheel 2 central authorities are provided with perforation 21, are provided with the sleeve part 22 of outside projection in peritreme one side, and sprocket wheel 2 is placed on the shaft 12 with sleeve part 22, and are positioned on the locating slot 13 with C shape ring 24, and sprocket wheel 2 is provided with positioning hole 23;

In the clutch part 11 and the formed space 4 of sleeve part 22 outer rims of rotating shaft 1, be with torsion spring 3, the internal diameter of torsion spring 3 is slightly larger than the external diameter of sleeve part 22 and clutch part 11, is the stationary fit state, the horizontal reverse arm 31 in spring end is provided with the positioning hole 23 that stretches into sprocket wheel 2.

Torsion spring described in the utility model can be left-handed or dextrorotation.

Referring to Fig. 7,8, for adopting left-handed torque spring to compress, the utility model drives rotating shaft action schematic representation, when sprocket wheel 2 and left-handed torque spring 3 rotate in the same way, horizontal reverse arm 31 pulling-down torsion springs, 3 clamp sleeve portions 22 and clutch part 11 are become one, rotate in the same way and drive rotating shaft 1.

Referring to Fig. 9,10, for the utility model adopts the left-handed torque spring rotating shaft idle running action schematic representation that gets loose, when sprocket wheel 2 during with turn-knob power spring 3 reverse rotation, then horizontal reverse arm 31 expands spring 3 to outside plate, spring 3 and sleeve part 23 and clutch part 11 are separated, form idle running.

Referring to Figure 11,12,13, schematic representation when adopting the dextrorotation torque spring to get loose rotating shaft idle running for the utility model, when sprocket wheel 2 and dextrorotation torque spring 3 ' reverse rotation, then horizontal reverse arm 31 ' is outwards pulled and is expanded spring 3 ', spring 3 ' and sleeve part 22 and clutch part 11 are separated, and rotating shaft 1 forms idle running.

Referring to Figure 14,15, for adopting the dextrorotation torque spring to compress, the utility model drives rotating shaft 1 action schematic representation, when sprocket wheel 2 and dextrorotation torque spring 3 ' rotate in the same way, horizontal reverse arm 31 ' pulling-down torsion spring, 3 ' clamp sleeve portion 22 and clutch part 11 are become-body, rotate in the same way and drive rotating shaft 1.

Claims

1, a kind of One-way chain wheel, by bearing (7), (7 ') at rotating shaft (1), the bolt (6) that passes rotating shaft (1) heart hole (14), the sprocket wheel (2) that is placed in rotating shaft (1) one side, bolt (6) two ends be fixed on the nut of using on the vehicle frame (61) and constituted, it is characterized in that: an end of rotating shaft (1) has stair-stepping clutch part of the gradually little one-tenth of diameter (11) and shaft (12), is provided with locating slot (13) at shaft (12) end;

Sprocket wheel (2) central authorities are provided with perforation (21), be provided with the sleeve part (22) of outside projection in peritreme one side, sprocket wheel (2) is placed on the shaft (12) with sleeve part (22), and is positioned on the locating slot (13) with C shape ring (24), and sprocket wheel (2) is provided with positioning hole (23);

In the clutch part (11) of rotating shaft (1) and the formed space of sleeve part (22) outer rim (4), be with torsion spring (3), the internal diameter of torsion spring (3) is slightly larger than the external diameter of sleeve part (22) and clutch part (11), be the stationary fit state, the horizontal reverse arm (31) in spring end is provided with the positioning hole (23) that stretches into sprocket wheel (2).

2, by the described One-way chain wheel of claim 1, it is characterized in that described torsion spring can be left-handed or dextrorotation.