CN2319302Y - Spinning bicycle minisize band-type brake - Google Patents

Abstract

The utility model relates to a minisize spinning bicycle band-type brake which uses the low cost to obtain the strong brake. A controllable locking ring is utilized to clamp a shaft casing, so a spinning perch is pulled to act on the shaft casing forcedly in a spinning mode; thus, a bicycle can be quick braked (a tyre is drawn). When a user drives the bicycle on the slope of a mountain area, the utility model has the unique advantage. Simultaneously, the utility model has the advantages of light and handy appearance, light wire load, controllable deceleration and fast casing restoring. In particular, the utility model has simple structure, and all elements are stamping elements; thus, the cost is low. The utility model can be used for bicycles, tricycles, booster cycles and other various vehicles.

Description

The miniature band-type brake of spinning type bicycle

The utility model relates to a kind of under low-cost condition, makes the brake gear of bicycle snap catch.

Bicycle brake is listed in life spare in national bicycle safe standard, be the necessary tool that ensures people's riding safety.Yet, brake in the past, the often braking of general category is not good enough, and high-grade cost is higher or investment is bigger, these are all restricting the development of bicycle industry to a certain extent.

The purpose of this utility model is to provide a kind of miniature band-type brake of spinning type bicycle of realizing the bicycle snap catch at lower cost at above-mentioned defective.

This reality is novel to be that sample is realized its purpose:

In the lock cover, put one and do not seal lock ring around axle skin one end.The lock ring two ends link to each other with the driving depression bar with drive stay with axle respectively, and a bar is held in addition and is connected in another bar middle part then.One side of lock ring is extended a long handle and is stretched out from lock cover side arm, its end flanging is rotary with brake cable and regulates bolt, the limited regulator bolts that revolves spring of flanging quilt cover in belt length hole, middle part passes and lock cover side arm jam-packed, root links to each other with spinning bar afterbody with axle, the spinning club head links to each other with the compression bar head with axle, and compression bar arc afterbody is taken and is against a skin one side.Be rotary with lock core caging bolt on the lock cover sidewall.

After applying the handbrake, drive stay dextrorotation is tightened up lock ring and is embraced a skin.Its friction force together is as if the storage power of revolving spring less than limit, and bicycle then is the deceleration attitude; If greater than the storage power that limit is revolved spring, the spinning bar is then had a down dip because of lock ring drives with the deflection of axle skin.At this moment, the downward component that the pulling force that the spinning bar bears decomposites will then be pressed to a skin by the item depression bar with lock cover counteracting high power conicity force, and the friction drag of outburst will force the wheel stall to axle skin dieback.

Adopt this scheme to have following benefit at least:

1. braking has mainly reflected the facedown of wheel and vehicle body, thereby braking is quite efficacious reliable.Can between Shun, realize drawing tire.(that is: the wheel linear velocity is 0)

2. the main source of braking force is the driving impulse force, thereby specific electric load is very light, can remove the sorrow of overload broken string effectively.

3. full lock gross weight about 200g, all is a blanked part only.Thereby cost is lower.At least can reduce by 1/3rd than former band-type brake.

4. the small and exquisite exquisiteness of outward appearance.

Concrete structure of the present utility model is provided by following examples:

In being positioned the lock cover (1) of car chain stay, put a untight lock ring (3) around axle skin one end, two terminations of lock ring (3), use axle (4) to link to each other with driving depression bar (6) with drive stay (8) respectively, use axle (7) will drive other end of depression bar (6) then and be connected in drive stay (8) middle part with axle (5).Extending a long handle in lock ring (3) left side stretches out outside lock cover (1) left arm, the long handle end part flanging is rotary with brake cable and regulates bolt (9), the middle part flanging has a slotted hole, the limited regulator bolts (10) that revolves spring (16) of quilt cover passes, and with lock cover (1) left arm jam-packed, root with the axle (14) link to each other with spinning bar (13) afterbody.Spinning bar (13) head links to each other with compression bar (12) head with axle (11), and depression bar (a 12) arc afterbody is taken and is against a skin left side.Lock cover ⑴ right side wall is rotary with lock core dowel bolt (2).Between brake cable adjusting bolt (9) and drive stay (8), be equipped with return spring (15).

Its integral structure, accompanying drawing as after.

Below in conjunction with accompanying drawing to motion flow and deceleration, the braking of this lock, details are as follows for retroposition mechanism:

After applying the handbrake, the dextrorotation of brake cable pulling drive stay (8), compressing axle (5) moves to axle (4), and lock ring (3) is tightened up, and embraces a skin.Because lock ring (3) is revolved spring (16) and lock cover (1) jam-packed by long handle on the left of it by limit, in certain field of load, can not moved deflection, thereby the propulsive effort of axle skin will constantly be consumed the formation wheel decelerates by the friction drag of lock ring (3) by the axle belt.

Need glancing impact, then strengthen the brake cable pulling force, lock ring (3) is further locked.Friction force when between lock ring (3) and axle skin revolves the Chu Lihou of spring (16) greater than limit.Lock ring (3) is then by the moving deflection of axle belt, causes axle (14) pulling spinning bar (13) tail end spinning bar (13) that has a down dip to spur compression bars (12) by axle (11) again and move to right, and tightly withstands a skin.Because the initial motion direction of axle (14) is almost vertical with the direction that moves to right of compression bar (12), thereby axle (14) pulling force of passing to the spinning bar can decomposite a quite a high proportion of component and presses to a skin, another downward component and lock cover are offset, the friction drag that increases severely will rapidly axle skin dieback, brakes to have reached the limit-draw tire.

After declutching, lock ring (3) unclamps rapidly under the promotion of return spring (15), and compression bar (12) and spinning bar (13) also reset under limit is revolved the bounce-back of spring, and braking is released.In addition, at glancing impact, the axle skin is also promoting brake to the huge antagonistic force of compression bar (12) and is resetting in the process of declutching, thereby the return that experiment shows this lock at the right time and reliable.

Need to prove in the design:

In the braking in order to obtain the roof pressure component of maximum with minimum propulsive effort, the line of centers of compression bar (12) line of centers and spinning bar (13) non-operation all should overlap with cooresponding lock ring (3) radius, error is the smaller the better, maximum can not＞± 5 °.Compression bar (12) afterbody is designed to the bigger arc in top, can prevents that it is sagging, change angle.

2. in order to make lock ring (3) obtain in the limited travel of brake cable activity, to make lock ring a same crack of enough running-fits is provided for a skin simultaneously by the strength no-load voltage ratio to the enough coupling mechanism forces of axle skin.The movable angle of drive stay (8) and driving depression bar (6) should be controlled at 15 ° ± 10 ° and be advisable.In order to guarantee that drive stay (8) dextrorotation makes lock ring (3) become tight, the position of axle (5) should be in the side that lock ring (3) is tightened up of axle (7) and axletree line.

3. the formation of lock ring (3) can be saved axle by arc lock and is linked to be, and also can manufacture with the elastic high-strength material monolithic is a single-piece.Backsight cost is selected.

4. all part all need be through the case hardening processing in addition with the axle bonded assembly for this lock, and superficial hardness is not less than HRC45, improves performance again to economize on material, makes it to avoid in design life maintenance, the few adjustment.

Claims (7)

1. miniature band-type brake of spinning type bicycle.It comprises lock cover (1), brake cable adjusting bolt (9) and return spring (15), it is characterized in that in the lock cover (1) that putting one around axle skin one end does not seal two termination of lock ring (3) and use axle (4) and axle (5) with drive stay (8) with drive depression bar (6) and link to each other respectively, wherein a bar other hold and be connected in the middle part of another bar; Lock ring (3) one surveys are extended a long handle and are stretched out outside lock cover (1) side arm, its end flanging is rotary with brake cable and regulates bolt (9), the limited regulator bolts (10) that revolves spring (16) of flanging quilt cover that the middle part has slotted hole passes, with lock cover (1) side arm jam-packed, root links to each other with spinning bar (13) afterbody with axle (14); Spinning bar (13) head links to each other with compression bar (12) head with axle (11), and compression bar (12) arc afterbody is taken and is against a skin one side; Lock cover (1) one sidespin has lock core caging bolt (2).

2. band-type brake according to claim 1 is characterized in that the line of centers of compression bar (12) and the spinning bar (13) of non-operation all overlaps with corresponding lock ring (3) radius, error＜± 5 °.

3. band-type brake according to claim 1 is characterized in that the action radius of drive stay (8) and driving depression bar (6) angle should be 15 ° ± 10 °.

4. band-type brake according to claim 1 is characterized in that axle (5) should be positioned at direction one side that the made lock ring (3) of axle (7) and axletree line tightens up.

5. band-type brake according to claim 1 is characterized in that lock ring (3) saves axle by arc lock and be formed by connecting.

6. explain for according to claim 1 armful, it is characterized in that the single-piece that lock ring (3) constitutes for the elastic high-strength material.

7. band-type brake according to claim 1 is characterized in that in the lock all with other part superficial hardness＞HRC45 of a bonded assembly.

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