CN2502955Y - Hydraulic adjusting device for antiskid brake system - Google Patents
Hydraulic adjusting device for antiskid brake system Download PDFInfo
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- CN2502955Y CN2502955Y CN 01260732 CN01260732U CN2502955Y CN 2502955 Y CN2502955 Y CN 2502955Y CN 01260732 CN01260732 CN 01260732 CN 01260732 U CN01260732 U CN 01260732U CN 2502955 Y CN2502955 Y CN 2502955Y
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Abstract
A hydraulic adjusting device of an antiskid brake system enables hydraulic pressure of a brake to increase or decrease in a controlled time. The main structure of the device is that an annular channel is arranged on the circumferential surface of a piston of an oil pressure cylinder group; an oil guide pipe is positioned on the wall of the cylinder body and can be connected or blocked when the piston moves so as to achieve a regulating function. The structure can reduce the stroke of pushing the piston by an actuator and inner leakage of the oil in the cylinder; the device can be operated in a low power actuator and severe return stroke which is caused by a brake handle is not existed during the operation and inner leakage can also be alleviated in a pressure-stabilized state. The piston is subject to the action of a return spring, and the smooth of an oil circuit can be kept when the actuator causes failure, fault or no action without the performance of the former brake system being influenced, thus the device also has the advantages of safe application.
Description
Technical field
The utility model relates to a kind of anti-lock braking system (ABS) hydraulic regulating device.
Background technology
Anti-lock braking system (ABS) (Anti-Lock Braking System, ABS), in the development of vehicle safety in modern age, occupy an important position, this system can be when putting brakes on violently, prevent tyre skidding, car body rotation, make car body possess the handling of certain degree, still can make in some cases and very stop the distance shortening.
Because locomotive only has two-wheeled to contact with ground, so the stability of locomotive is poor than automobile, still need when putting brakes on violently and consider the possibility of inclination overturning, so the brake controlled condition of cart is more harsh.Yet anti-lock braking system (ABS) but seldom installing on low-power vehicle such as locomotive now, it is former because available space is narrow and small in the vehicle body, power is comparatively deficient, the cost ratio is higher, so anti-lock braking system (ABS) bright few application on locomotive.Though external well-known depot such as HONDA YAMAHA BMW have released the car type that the number money is equipped with ABS, yet its price is higher, performance shows and still remains to be improved.
As the known control mechanism that discloses, the keying of its flow regulating valve needs more high-performance actuator to operate, and because valve body itself does not possess the pressure release space, therefore during the ABS start, the too high hydraulic pressure of brake end, needing huge high-pressure storage stores, need pumping with the auxiliary pedal master cylinder place that is transported to of high-pressure fluid simultaneously, therefore volume takies greatly, to consume energy also high, though applicable to automobile, but be widely used on low-power vehicle such as the locomotive difficulty, therefore, real nonideal structure.
The anti-skidding brake device of low-power vehicle installing because under the considering of space, weight, cost each side, actuation element can't be selected power the greater for use, therefore cause response too slow, so that anti-skidding controller performance is not ideal enough; Again, when the ABS start, the suffered counterattack strength in handle position is too big, so that the operation sense discomfort, and oil cylinder in-to-in oil leakage situation is serious, so that can't keep the pressure release state lastingly, also nonideal structure.
Summary of the invention
At the shortcoming that prior art exists, this creator satisfies being engaged in the sector experience for many years, and in line with excelsior spirit, active research is improved, eventually generation of the present utility model.
The technical solution adopted in the utility model is: a kind of anti-lock braking system (ABS) hydraulic regulating device, it is characterized in that: it is made of by spring, a joint piece, a seal ring, a piston push rod and an actuator a bottom, a throttling cylinder body, a piston, one time, wherein:
This bottom, it is a lid, is equipped with nationality thereon so that Brake fluid flows into and flow out the hydraulic pressure inlet and the hydraulic pressure outlet of throttling cylinder body;
This throttling cylinder body, it is the cylinder that is provided with hollow, can hold piston in its hollow bulb, go into power passage and hydraulic pressure exert oneself passage conducting hydraulic pressure gangway and hollow bulb and on casing wall, be equipped with hydraulic pressure, exerting oneself in hydraulic pressure in addition, passage is other to be equipped with and the hydraulic pressure pressure release passage that passage communicates of exerting oneself, and pressure releasing chamber and the hydraulic pressure passage of exerting oneself communicates;
This piston, it is a body of rod, its surface is concaved with an annular runner and makes hydraulic pressure go into power passage and the hydraulic pressure passage of exerting oneself to communicate, and the one end passes the outer and holding of seal ring on piston push rod;
This pull back spring, its be a coil spring and coaxial with piston push rod, the one end is fixed on the joint piece, the other end and piston push rod are inconsistent;
This joint piece, it is that a cylindrical shell is incorporated on the seal ring, it is provided with a spatial accommodation, holds piston push rod and pull back spring wears;
This seal ring is the hollow ring body that a piston passes;
This piston push rod is that a body of rod is arranged in the joint piece, and wherein an end is provided with a bulge loop backstop pull back spring, and this bottom portion then is provided with a blocked slot holding piston, and it is outer in conjunction with actuator that its other end then passes joint piece;
This actuator, but be the actuation element of a motion of translation, and it combines with piston push rod.
Hydraulic pressure is gone into the exit position of power passage at hollow bulb, is positioned at the position that can be conducted with the annular runner on the piston when piston is not made dynamic equilibrium state.
Hydraulic pressure goes out the exit position of passage at hollow bulb, is positioned at the position that can be conducted with the annular runner on the piston when piston is not made dynamic equilibrium state.
Pressure release passage is in the exit position of hollow bulb, is positioned at when piston to leave hollow bulb being stimulated when terminal, can allow this outlet expose, and makes the position that pressure release passage and hollow bulb end pressure releasing chamber is conducted; And the other end of pressure release passage is conducted with the hydraulic pressure passage of exerting oneself.
When being stimulated and departing from balance position, piston can give birth to re-entrant portion between piston end and the cylinder body hollow bulb.
Brake strength interface and former car that this device can be installed on the former car are braked between the brake equipment.
Piston moves axially along throttling cylinder body hollow bulb, and its stroke that moves can be predetermined, and also can change immediately in the process of control.
This throttling cylinder body is provided with a pressure equalisation passage.
Actuator is the power generation arrangement of a motion of translation.
The utility model anti-lock braking system (ABS) hydraulic regulating device is when running, the power of the required consumption of driver element more reduces, keep the characteristic of its high-frequency operation simultaneously, and when this failure of apparatus, the brake performance that still keeps former car, utilize the pull back spring nature that piston is pushed into the conducting side, and after the shoe plate abrasion, but the required oil mass of automatic compensation; The utility model can be directly compatible with most car types simultaneously, former car does not need the material alteration the utility model of can arranging in pairs or groups, moreover, the utility model is also revised prior art and produce serious pedal or handle counterattack phenomenon when start, make steerman when using the utility model, enjoy more comfortable operation sense.
Description of drawings
Fig. 1 is anti-lock braking system (ABS) hydraulic regulating device and former car loop scheme drawing;
Fig. 2 is not start or the position of components graph of a relation when losing efficacy of the utility model;
Position of components graph of a relation when Fig. 3 is the utility model start;
Fig. 4 is the performance testing figure of prior art;
Fig. 5 is performance testing figure of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
As shown in Figure 1, the utility model anti-lock braking system (ABS) hydraulic regulating device is as a kind of anti-lock braking system (ABS) hydraulic regulating device, its mechanism ground is rational high, be a kind of throttle unit of setting up in former car braking system, mainly be by a bottom 1, a throttling cylinder body 2, a piston 3, constituted by spring 33, a joint piece 34, a seal ring 35, a piston push rod 36 and an actuator 5 for one time, wherein:
This bottom 1, it is a lid, is equipped with hydraulic pressure inlet 11 and one hydraulic pressure outlet 12 thereon, nationality is so that Brake fluid flows into and outflow throttling cylinder body 2.
This throttling cylinder body 2, it is the cylinder that is provided with hollow, can hold piston 3 in its hollow bulb, go into power passage 21 and the hydraulic pressure passage 22 of exerting oneself and on casing wall, be installed with hydraulic pressure, nationality is with conducting hydraulic pressure gangway and hollow bulb, exerting oneself in hydraulic pressure in addition, passage 22 is other to be equipped with and the hydraulic pressure pressure release passage 23 that passage 22 communicates of exerting oneself, and passage 22 communicates nationality so that pressure releasing chamber 32 and hydraulic pressure are exerted oneself.
This piston 3, it is a body of rod, and its surface is concaved with an annular runner 31, and nationality is so that hydraulic pressure is gone into power passage 21 and the hydraulic pressure passage 22 of exerting oneself communicates, and the one end passes the outer and holding of seal ring 35 on piston push rod 36.
This pull back spring 33, its be a coil spring and coaxial with piston push rod 36, the one end is fixed on the joint piece 34, the other end and piston push rod 36 are inconsistent, make pushed joint piece 34 bottoms of piston push rod 36 normalities.
This joint piece 34, it is that a cylindrical shell is incorporated on the seal ring 35, and it is provided with a spatial accommodation, and nationality is to hold piston push rod 36 and pull back spring 33 wears.
This seal ring 35 is a hollow ring body, can pass for piston 3.
This piston push rod 36 is that a body of rod is arranged in the joint piece 34, and wherein an end is provided with a bulge loop 37, nationality is with backstop pull back spring 33, and this bottom portion then is provided with a blocked slot 38, and nationality is with holding piston 3, its other end then passes outside the joint piece 34, and nationality is with in conjunction with actuator 5.
This actuator 5, but be the actuation element of a motion of translation, and as magnet coil, it combines nationality with piston push rod 36 and draws piston 3 and move.
The utility model cooperates when running with the Hydraulic brake system of vehicle, each element connection relationship and to make the flowing mode division as follows:
See also Fig. 1, the utility model in conjunction with the time be that piston 3 is inserted in the throttling cylinder body 2, and be incorporated on the throttling cylinder body 2 with bottom 1 and seal ring 35, make piston 3 be fixed in the throttling cylinder body 2 and make the one end pass seal ring 35, cover pull back spring 33 by piston push rod 36 again and make piston push rod 36 holdings on piston 3, coat piston push rods 36 with joint piece 34 again and be incorporated on the seal ring 35, make piston push rod 36 promptly finish assembling of the present utility model at last in conjunction with actuator 5.
The braking system that does not originally have the ABS function, only need that former Brake line is docked with hydraulic pressure inlet 11 of the present utility model and export 12 places with hydraulic pressure, can carry the utility model device, so extendibility of the present utility model and compatibility extra-heavy, it is equipped and need not change former car design to be fit to multiple car type, so can attract the car owner to install additional, improve the ubiquity of using.
Please refer to Fig. 2, between normal the enforcement or when not braking, the not start of this mechanism, piston 3 is subjected to the compressing of pull back spring 33 and rests on the low order end of throttling cylinder body 2, makes annular runner 31 and hydraulic pressure go into passage 22 conductings of exerting oneself of power passage 21, hydraulic pressure.User's brake input pressure 61 can be gone into power passage 21, annular runner 31, hydraulic pressure exert oneself passage 22, hydraulic pressure outlet 12 through hydraulic pressure inlet 11, hydraulic pressure, and be flowed to brake device 42, reaches the brake actuation function.
As Fig. 3, when the utility model start, actuator 5 inputs one application force pulling piston 3 moves to left, make annular runner 31 off normals on the piston 3, hydraulic pressure is gone into power passage 21 and the hydraulic pressure passage 22 of exerting oneself and promptly is cut off, this moment, user's brake input pressure 61 was promptly blocked, and can't be circulated to hydraulic pressure and export 12 places; Simultaneously the volume of pressure releasing chamber 32 increases, and then the hydraulic pressure too much pressure in passage 22 and the brake brake equipment 42 of exerting oneself can flow to pressure releasing chamber 32 through pressure release passage 23, and nationality makes wheel recover suitable rotating speed as quickly as possible to reduce hydraulic pressure, to reduce brake moment.
Return Fig. 2, treat that actuator 5 input forces reduce, even actuator 5 damaged when losing efficacy, piston 3 is subjected to pushing of pull back spring 33 and gets back to slack position, this moment, annular runner 31 was gone into hydraulic pressure passage 22 conductings of exerting oneself of power passage 21 and hydraulic pressure once again, this moment the user brake input pressure, 61 can be once again by hydraulic pressure inlet 11, hydraulic pressure exert oneself passage 22, with hydraulic pressure outlet 12, flow to brake brake equipment 42, then hydraulic pressure gos up, brake moment thereby rise, vehicle wheel rotational speed is lowered again, reaches normal brake function; Hence one can see that, and the safety when the utility model can be guaranteed to lose efficacy does not influence the normal brake function of former car fully.
Repeat the process of Fig. 2 and Fig. 3, amplitude, the frequency of suitable control actuator 5 input action power just can make the brake stop mechanism produce an evil spirit of putting formula and put effect.
The brake friction lining is after use after a while, thickness can reduce because of wearing and tearing, and the fluid in the oil piping system of braking this moment must compensate, and just can supply the stroke of shoe plate feeding, even strength input interface 41 is pressed into the end otherwise the user will brake, also can't produce the brake effect.Please observe Fig. 2, the utility model can keep annular runner 31 conducting hydraulic pressure to go into power passage 21 and the hydraulic pressure passage 22 of exerting oneself when lax, makes the additional fluid at brake strength input interface 41 places, but automatic compensation is reached the self-conpensating purpose of oil mass to whole brake oil circuit; And the generation of this function can not need nationality by any driven by energy, does not also need any artificial maintenance practices.
Please refer to Fig. 1, wherein this throttling cylinder body 2 also can be provided with one or a plurality of pressure equalisation passage 24, with pressure releasing chamber 32 and pressure equalizing chamber 25 mutual conduction.The volume of this pressure equalizing chamber 25 for being constituted between piston 3 side-facing depressions and throttling cylinder body 2 walls so can make when piston 3 moves forward and backward, because of fluid reduces the resistance that piston 3 forward-and-rearward difference of pressures are caused.
One of the utility model embodiment is installed in and does the real vehicle test on the locomotive, the running result as shown in Figure 5, wherein the transverse axis of Fig. 5 a and Fig. 5 b is all represented the time, unit is second, the accurate position of electronics news of longitudinal axis representative the increasing pressure release order of Fig. 5 a, this test is that 2 seconds the frequency actuator 5 input action power of deciding drive this device with the cycle, brake pull bar on the locomotive then keeps firmly being pressed into the end, in Fig. 5 a and the further test of this experiment, in can finding out that this device can 0.05 second after brake order is assigned, make the pressure of brake clamp end begin to reduce, and in 0.08 second that differential pressure is extremely minimum, make resulting pressure remain on 12kgf/cm
2Below.
Fig. 4 is the performance testing figure of prior art creation, and wherein, the transverse axis of Fig. 4 a is the time, and unit be second, and the longitudinal axis is pressed the keying state of order for increase and decrease, and the transverse axis of Fig. 4 b is the time, and the longitudinal axis is the hydraulic pressure value, and unit is kilogram every square centimeter; The accurate position of the electric signal of pressure release order is represented in position 501, and unit 502 represents the accurate position of the electric signal of back pressure order, and dotted line 503 is represented the pressure reading of brake handgrip end, the pressure reading of solid line 504 representative brake clamp ends.
Fig. 5 is the performance testing figure of embodiment of the present utility model, and wherein the transverse axis of Fig. 5 a is the time, and unit is second, and the longitudinal axis is pressed the keying state of ordering for increase and decrease, and the transverse axis of Fig. 5 b is the time, and unit is second, and the longitudinal axis is the hydraulic pressure value, and unit is every square centimeter of a kilogram; The accurate position of the electric signal of pressure release order is represented in position 505, and the accurate position of the electric signal of back pressure order is represented in position 506, and solid line 507 is represented the pressure reading of brake handgrip end, the pressure reading of dotted line 508 representative brake clamp ends.
Create compared to prior art, this device is when the ABS start, can significantly lower the sense of discomfort that pedal or handle are fought back, the dotted line 503 of comparison diagram 4b and the solid line 507 of Fig. 5 b, solid line 507 is when pressure release strength has just been assigned as can be known, therefore the hydraulic pressure value of brake handgrip end can't produce the peak as dotted line 503, and when this installed anti-skidding brake function start, steerman can't be experienced the sense of discomfort that serious handle is fought back.
This experiment the application those disclosed herein in the anti-skidding brake of reality is: when control logic is sent the pressure release order and excited the actuator start, actuator 5 input forces can make piston 3 be shifted, hydraulic pressure is gone into passage 22 blocking-up of exerting oneself of power passage 21 and hydraulic pressure, then the operated excessive brake input pressure 61 of user is promptly blocked, and by the too much liquid measure of pressure releasing chamber 32 sucking-offs of this mechanism brake brake equipment 42, the hydraulic pressure of brake brake equipment 42 is descended, and brake moment reduces, and wheel can recover to roll.
Nationality is incorporated on the vehicle by said elements, makes the utility model can effectively reach the skidproof effect of brake, so have following advantage:
1, during not start of the utility model, can keep former car compensation lubricating cup to communicate, but make the oil mass automatic compensation that whole braking system is interior with the brake clamp.
2, the utility model can be on controollable opportunity, and blocking-up or conducting brake handgrip and the oil circuit of braking between the clamp cooperate lower powered driver element and suitable control method, can reach the anti-skidding brake effect of high frequency.
3, can design on the short and piston of the stroke that moves of the utility model piston and settle the oil sealed space abundant, therefore can effectively lower piston forward-and-rearward fluid and flow back and forth, nationality is to reduce the leakage phenomenon of this mechanism when pressure hold mode or the pressure release state.
4, the stroke that moves of the utility model piston can design or change immediately according to control command in advance, so can reach more accurate pressure release effect, controls the wheel situation more accurately.
5, the utility model in cylinder wall, can be save the outside complicated conduit of plugging into oil guide pipe design, so volume can design quite for a short time, is particularly suitable for the prestowage of equipment of small motor vehicle, and effectively reduces cost of manufacture.
6, after the utility model installing is finished, do not need extra adjustment to safeguard formality, be beneficial to general user's long-term use.
7, the utility model can not need change former car project organization and can be installed on most of car type, and therefore body compatibility height can attract the car owner to choose, and implements the safety of cyclecar.
Because the utility model motion of mechanism stroke is little, so quite be fit to little stroke, miniwatt actuation element, drive as magnet coil, reach reaction fast speed advantage, to meet the restriction of the power source deficiency of dilly own, therefore and this device design volume is little, with low cost, can set up on the locomotive that the user has had and need not reequip design and meaningless the expending of cost, has usability on the industry.
Though shown particular embodiment of the present utility model, but the utility model is not limited to this, for the personage who is familiar with this skill, any modification and variation are also contained in the utility model, and the utility model does not exceed with the vehicle of low-power yet, the all applicable the utility model of the Hydraulic brake system of any vehicle is so that the utility model obtains the following full scope that claim defined.
Claims (9)
1, a kind of anti-lock braking system (ABS) hydraulic regulating device is characterized in that: it is made of by spring, a joint piece, a seal ring, a piston push rod and an actuator a bottom, a throttling cylinder body, a piston, one time, wherein:
This bottom, it is a lid, is equipped with nationality thereon so that Brake fluid flows into and flow out the hydraulic pressure inlet and the hydraulic pressure outlet of throttling cylinder body;
This throttling cylinder body, it is the cylinder that is provided with hollow, can hold piston in its hollow bulb, go into power passage and hydraulic pressure exert oneself passage conducting hydraulic pressure gangway and hollow bulb and on casing wall, be equipped with hydraulic pressure, exerting oneself in hydraulic pressure in addition, passage is other to be equipped with and the hydraulic pressure pressure release passage that passage communicates of exerting oneself, and pressure releasing chamber and the hydraulic pressure passage of exerting oneself communicates;
This piston, it is a body of rod, its surface is concaved with an annular runner and makes hydraulic pressure go into power passage and the hydraulic pressure passage of exerting oneself to communicate, and the one end passes the outer and holding of seal ring on piston push rod;
This pull back spring, its be a coil spring and coaxial with piston push rod, the one end is fixed on the joint piece, the other end and piston push rod are inconsistent;
This joint piece, it is that a cylindrical shell is incorporated on the seal ring, it is provided with a spatial accommodation, holds piston push rod and pull back spring wears;
This seal ring is the hollow ring body that a piston passes;
This piston push rod is that a body of rod is arranged in the joint piece, and wherein an end is provided with a bulge loop backstop pull back spring, and this bottom portion then is provided with a blocked slot holding piston, and it is outer in conjunction with actuator that its other end then passes joint piece;
This actuator, but be the actuation element of a motion of translation, and it combines with piston push rod.
2, anti-lock braking system (ABS) hydraulic regulating device as claimed in claim 1 is characterized in that: hydraulic pressure is gone into the exit position of power passage at hollow bulb, is positioned at the position that can be conducted with the annular runner on the piston when piston is not made dynamic equilibrium state.
3, anti-lock braking system (ABS) hydraulic regulating device as claimed in claim 1 is characterized in that: hydraulic pressure goes out the exit position of passage at hollow bulb, is positioned at the position that can be conducted with the annular runner on the piston when piston is not made dynamic equilibrium state.
4, anti-lock braking system (ABS) hydraulic regulating device as claimed in claim 1, it is characterized in that: pressure release passage is in the exit position of hollow bulb, be positioned at when piston leaves the hollow bulb end being stimulated, can allow this outlet expose, make the position that the terminal pressure releasing chamber of pressure release passage and hollow bulb is conducted; And the other end of pressure release passage is conducted with the hydraulic pressure passage of exerting oneself.
5, anti-lock braking system (ABS) hydraulic regulating device as claimed in claim 1 is characterized in that: can give birth to re-entrant portion between piston end and the cylinder body hollow bulb when piston is stimulated and departs from balance position.
6, anti-lock braking system (ABS) hydraulic regulating device as claimed in claim 1 is characterized in that: brake strength interface and former car that this device can be installed on the former car are braked between the brake equipment.
7, anti-lock braking system (ABS) hydraulic regulating device as claimed in claim 1 is characterized in that: piston moves axially along throttling cylinder body hollow bulb, and its stroke that moves can be predetermined, and also can change immediately in the process of control.
8, anti-lock braking system (ABS) hydraulic regulating device as claimed in claim 1 is characterized in that: this throttling cylinder body is provided with a pressure equalisation passage.
9, anti-lock braking system (ABS) hydraulic regulating device as claimed in claim 1 is characterized in that: actuator is the power generation arrangement of a motion of translation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01260732 CN2502955Y (en) | 2001-09-10 | 2001-09-10 | Hydraulic adjusting device for antiskid brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01260732 CN2502955Y (en) | 2001-09-10 | 2001-09-10 | Hydraulic adjusting device for antiskid brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2502955Y true CN2502955Y (en) | 2002-07-31 |
Family
ID=33668822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01260732 Expired - Fee Related CN2502955Y (en) | 2001-09-10 | 2001-09-10 | Hydraulic adjusting device for antiskid brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2502955Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698598A (en) * | 2017-10-24 | 2019-04-30 | 博格华纳公司 | Push rod and its manufacturing method for electromechanical actuator system |
| WO2019149154A1 (en) * | 2018-02-02 | 2019-08-08 | 张奉琦 | Anti-jamming hydraulic brake system architecture and implementation method therefor |
| CN110435804A (en) * | 2018-05-04 | 2019-11-12 | 彦豪金属工业股份有限公司 | The anti-locking braking mechanism of bicycle |
-
2001
- 2001-09-10 CN CN 01260732 patent/CN2502955Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109698598A (en) * | 2017-10-24 | 2019-04-30 | 博格华纳公司 | Push rod and its manufacturing method for electromechanical actuator system |
| WO2019149154A1 (en) * | 2018-02-02 | 2019-08-08 | 张奉琦 | Anti-jamming hydraulic brake system architecture and implementation method therefor |
| CN110435804A (en) * | 2018-05-04 | 2019-11-12 | 彦豪金属工业股份有限公司 | The anti-locking braking mechanism of bicycle |
| CN110435804B (en) * | 2018-05-04 | 2020-11-10 | 彦豪金属工业股份有限公司 | Anti-lock brake mechanism of bicycle |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |