CN203211003U

CN203211003U - Bicycle wheel hub

Info

Publication number: CN203211003U
Application number: CN 201320214162
Authority: CN
Inventors: 蔡贵席
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-11
Filing date: 2013-04-11
Publication date: 2013-09-25
Anticipated expiration: 2023-04-11

Abstract

The utility model belongs to the technical field of bicycle wheels. A bicycle wheel hub comprises a hub tube. The hub tube is provided with an end cap and the end cap is provided with a sliding groove. A gear case is arranged in the hub tube. A wheel axle penetrates the sliding groove and the hub tube is connected with an expansion rod; the wheel axle parallels to a drive shaft and a gear A, a sliding piece and a gear B are sleeved on the wheel axle. A driven gear A, a driven gear B and a worm are arranged on the drive shaft. The worm drives a worm gear to rotate. When the worm gear rotates, the extension rod is driven to extend and retract; the gear A is in driving connection with the driven gear A; the gear B and the driven gear B are in mesh driving; the sliding piece is connected with an adjustment lever. The bicycle wheel hub is reasonable, reliable and durable in terms of integral structure and controlling.

Description

Cycle hub

Technical field

The utility model belongs to the cycle hub technical field.

Background technology

The wheel hub wheel shaft of common bicycle is arranged on the fixing position of wheel center, this kind wheel hub is installed can be used for general walking-replacing tool.Also have through patent retrieval and can regulate wheel shaft and wheel eccentricities bicycle in riding and play the bicycle designs that the bicycle fluctuating is jolted.But it is reasonable inadequately to exist on the structural entity integraty and aspect the control, causes the low and damage easily of reliable durable of parts.

The utility model content

Be to provide a kind of reliability and durability cycle hub rational in infrastructure and operate the conversioning wheel eccentric shaft easily and wheel shaft rehabilitation center state in order to solve above-mentioned not enough the purpose of this utility model.

For realizing the purpose of this utility model, a kind of technical scheme of the present utility model is: a kind of cycle hub, comprise the hub pipe, and the hub pipe is provided with end cap, and end cap is provided with chute, is provided with gear case in the described hub pipe, and wheel shaft passes chute, and the hub pipe is connected with expansion link; It is characterized in that: described wheel shaft is parallel with axle drive shaft, is with gear A, sliding part and gear B on the wheel shaft, and axle drive shaft is provided with driven tooth A, driven tooth B and worm tooth, and worm tooth drives worm gear and rotates, and drives expansion link when worm gear rotates and stretches and contract; Described gear A and driven tooth A driving coupling, gear B and driven tooth B engaged transmission; Described sliding part connects with adjust bar.

Described cycle hub is characterized in that: described gear A chain drive driven tooth A, described gear B and driven tooth B engaged transmission.

Described cycle hub is characterized in that: the end of described gear A, sliding part and gear B is respectively equipped with dog, and sliding part is provided with spring.

Described cycle hub is characterized in that: described wheel shaft is provided with impeller and the shift fork that gear A, gear B are separated with sliding part, and impeller connects with sliding part.

The utility model is easy to operate simple when mode is ridden in conversion, rationally after wheel eccentric shaft or rehabilitation center, can flexible parts be quit work the automatic cutout transmission device on the control structure, the position that wheel shaft is rested on configured originally, worm and wormwheel right angle stable drive is reliable, and the fork controls wheel eccentric shaft and the wheel shaft rehabilitation center position that are provided with the inclined-plane accurately put in place.

Description of drawings

Fig. 1 is the solid assembling decomposition chart of a kind of embodiment of the utility model cycle hub;

Fig. 2 is assembled exploded perspective constructional drawing on the wheel shaft;

Fig. 3 is the block diagram after wheel shaft, gear, chain, worm screw, the worm gear of the utility model cycle hub assembles;

Fig. 4 is the view of other direction after the assembling of Fig. 3;

Fig. 5 is the constructional drawing of the utility model sliding part, gear;

Fig. 6 is the three-dimensional view of the utility model cycle hub assembling hind axle in the center;

Fig. 7 is the three-dimensional view of the utility model cycle hub assembling hind axle at eccentric position;

Fig. 8 is the cross section view of the utility model cycle hub assembling hind axle in the center;

Fig. 9 is the cross section view of the utility model cycle hub assembling hind axle at eccentric position;

Figure 10 is the gear box structure figure of the utility model cycle hub;

Figure 11 is the utility model cycle hub gear case another side constructional drawing.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model cycle hub is described in further detail.

As shown in FIG., the hub pipe 1 of the utility model cycle hub, bolt 2, bearing 3, gear case 4, end cap 5, chute 6, very little cover 7, brake disc 8, screw 9, shift fork 10, bearing seat 11, wheel shaft 12, chain 13, driven tooth A14, worm tooth 15, axle drive shaft 16, gear A 17, sliding part 18, spring 19, worm gear 20, worm-wheel shaft 21, expansion link 22, gear B 23, impeller 24, latch 25, retracing spring 26, flywheel 27, driven tooth B28, worm gear axle bed 29, guide groove 30, groove 31, inclined-plane 32, back-up ring 33, dog 34, protruding key 35, screw 36, drive axle bed 37, recoil spring 38, adjust bar 39; rocker stand 40; drag-line 41; Rocker arm 42; guide slot 43.

The two ends of wheel shaft extend out to hub pipe end-cap outside, and after the two ends of wheel shaft were fixed on the vehicle frame of bicycle, whole hub unit was enclosed within on the wheel shaft, drive whole hub unit during the rotation of hub pipe and rotate around wheel shaft, and having sliding part only does not change.

Embodiment 1

Extremely shown in Figure 9 as Fig. 1, described cycle hub, bearing 3 is installed on the bearing seat 11 of gear case 4, bearing 3 internal diameters are enclosed within on the wheel shaft 12, gear A, gear B are enclosed within on the wheel shaft 12 and can rotate at wheel shaft 12, and sliding part 18 is enclosed within on the wheel shaft 12 and can endwisely slips and can not rotate at wheel shaft 12 at wheel shaft 12.

Axle drive shaft 16 is installed in the driving axle bed 37 of gear case 4, gear A 17 and driven tooth A14 chain 13 transmissions, gear B and driven tooth B engaged transmission, axle drive shaft 16 is provided with worm tooth 15, worm tooth 15 and worm gear 20 engaged transmission, worm gear 20 internal diameters offer screw 36, and screw is provided with the expansion link 22 that has thread for 36 li, expansion link 22 is captiveed joint with hub pipe 1, and expansion link 22 was stretching out or shrinking in worm-wheel shaft 21 under the effect of screw thread when worm gear 20 rotated.

Control wheel shaft 12 is achieved like this in hub pipe 1 position off-centre or rehabilitation center, knob tension drag-line 41 Rocker arm 4s 2 push away adjust bar 39 and sliding part 18 inside when wheel rotates, dog 34 on the sliding part 18 engages mutually with dog 34 on the gear 17A, this moment, the rotation of wheel hub drove also and then rotation of axle drive shaft 16, be located at worm tooth 15 engagement worm gears 20 backward rotation on the axle drive shaft 16, expansion link 22 was stretched from worm-wheel shaft 21 under the effect of screw thread outward when worm gear 20 rotated, the wheelbase that also drives hub pipe 1 and wheel shaft 12 when expansion link 22 stretches out draws back, under the not askew partially situation of the cooperation lower hub of guide slot 43 and end cap 5, realize wheel shaft 12 and hub pipe 1 off-centre, the internal diameter of hub pipe 1 begins the top to shift fork 10 during the eccentric certain position of wheel shaft 12 and hub pipe 1, because shift fork 10 jag sections are thinner and be processed with inclined-plane 32, shift fork 10 forces the top to impeller 24, the elastic force impeller 24 that impeller 24 overcomes recoil spring 38 extremely separates sliding part 18 and gear A 17 tops along groove 31, thereby realize that sliding part 18 separates to control quitting work of telescopic component automatically with gear B 23, this moment, 17 of gear A were around wheel shaft 12 idle running, axle drive shaft 16 and worm gear 20 all quit work, realize that wheel shaft 12 in the hub pipe 1 former position of setting off-centre, makes bicycle running be in the state that rises and falls and jolt and travel.

When knob loosens drag-line 41, sliding part 18 engages with it to another gear B 23 on effect downslide moving part 18 tops of spring 19, gear B 23 and driven tooth B28 engaged transmission, worm tooth 15 engagement worm gears 20 forward rotation, expansion link 22 shrank back in the worm-wheel shaft 21 under the effect of screw thread when worm gear 20 rotated, the wheelbase that also drives hub pipe 1 and wheel shaft 12 when expansion link 22 shrinks back furthers, at hub pipe 1 with wheel shaft 12 during near concentric position, the internal diameter of hub pipe 1 begins the top to another shift fork 10, because shift fork 10 jag sections are thinner and be processed with inclined-plane 32, shift fork 10 forces the top to impeller 24, the elastic force impeller 24 that impeller 24 overcomes spring 19 extremely separates sliding part 18 and gear B 23 tops along groove 31, thereby realize that sliding part 18 separates to control telescopic component automatically with gear B 23 and quits work, this moment, 23 of gear B were around wheel shaft 12 idle running, axle drive shaft 16 and worm gear 20 all quit work, and realize that wheel shaft 12 and hub pipe 1 are being in concentric position, make bicycle be in the parallel state that smoothly travels.

Transmission that hence one can see that on same group of axle drives another side with chain on one side can make axle drive shaft rotate and reverse with the direct geared engaged transmission, and the worm gear forward or reverse can make wheel shaft be in off-centre and the concentric of wheel hub.

Chain sprocket described in the utility model also can replace with the direct geared engagement, can reach axle drive shaft equally and rotate and reverse, the technique effect that makes expansion link shrink and stretch out.

Claims

1. a cycle hub comprises hub pipe (1), and hub pipe (1) is provided with end cap (5), and end cap (5) is provided with chute (6), is provided with gear case (4) in the described hub pipe (1), and wheel shaft (12) passes chute (6), and hub pipe (1) is connected with expansion link (22);

It is characterized in that:

Described wheel shaft (12) is parallel with axle drive shaft (16), be with gear A (17), sliding part (18) and gear B (23) on the wheel shaft (12), axle drive shaft (16) is provided with driven tooth A (14), driven tooth B (28) and worm tooth (15), worm tooth (15) drives worm gear (20) and rotates, and drives expansion link (22) when worm gear (20) rotates and stretches out and shrink;

Described gear A (17) and driven tooth A (14) driving coupling, gear B (23) and driven tooth B (28) engaged transmission;

Described sliding part (18) connects with adjust bar (39).

2. cycle hub according to claim 1 is characterized in that: described gear A (17) chain (13) driving driven tooth A (14), described gear B (23) and driven tooth B (28) engaged transmission.

3. cycle hub according to claim 1, it is characterized in that: the end of described gear A (17), sliding part (18) and gear B (23) is respectively equipped with dog (34), and sliding part (18) is provided with spring (19).

4. cycle hub according to claim 1, it is characterized in that: described wheel shaft (12) is provided with impeller (24) and the shift fork (10) that gear A (17), gear B (23) are separated with sliding part (18), and impeller (24) connects with sliding part (18).