CN207315912U - A kind of drum brake - Google Patents
A kind of drum brake Download PDFInfo
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- CN207315912U CN207315912U CN201721308617.5U CN201721308617U CN207315912U CN 207315912 U CN207315912 U CN 207315912U CN 201721308617 U CN201721308617 U CN 201721308617U CN 207315912 U CN207315912 U CN 207315912U
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- shoes
- wheel hub
- drum brake
- brake
- piston
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Abstract
The utility model discloses a kind of drum brake, including wheel hub, the braking parts being located in wheel hub and power part.Braking parts include the column being located in wheel hub and the shoes being arranged on column；Column is uniformly arranged around the center line of wheel hub；Shoes includes a brake(-holder) block being bonded with wheel hub rubbing surface, two reinforcing sheets being fixed on the inside of brake(-holder) block, the friction plate being located on brake(-holder) block outer surface and the slot hole being opened in reinforcing sheet.Power part includes hydraulic part and piston；Hydraulic part includes an input terminal and four output terminals；Piston is located in output terminal；One end of piston is contacted with shoes；Shoes is equipped with pressure sensor.The utility model simplifies the structure of drum brake, contact area and contact distribution are redesigned at the same time, forced area is set to increase, wear rate declines, and by pressure monitor sensor shoes, adjustment spring A6 and adjust spring B 7 aging conditions, it is more convenient with it is quick.
Description
Technical field
It the utility model is related to field of automobile brake, and in particular to a kind of drum brake.
Background technology
Automobile brake refers to automobile in the process of moving by braking deceleration or the braking technology of parking.Actually using
In, drum brake and wheeled braking are that technology is most ripe, two be most widely used kind braking technology.
Drum brake is realized by drum brake.Drum brake is also block brake, is to lean on brake block
Compress on the brake wheel to realize brake.Drum brake is the braking system of Earlier designs, the design of its brake rim 1902
Just use on carriage, just started in auto industry extensive use until or so nineteen twenty.The mainstream of drum brake
It is internal expanding type, its brake block (brake shoe) is located on the inside of braked wheel, and brake block is flared out when brake, friction catch
The inner side of wheel, achievees the purpose that brake.
Since the brake efficiency and thermal diffusivity of drum brake are generally poor, brake force stability is also on the weak side, is not going the same way
Brake force change very greatly, is not easy to control on face.And since heat dissipation performance is poor, substantial amounts of heat can be assembled in braking procedure.
Brake block and wheel hub are easier to that extremely complex deformation occurs under the influence of high temperature, easily produce fading of brake and the phenomenon that flutters, draw
Braking efficiency is played to decline.In addition, drum brake in use for some time, the gap of regular adjustment brake shoe, or even will
Whole brake rim is split out the brake powder including cleaning accumulation.
But drum brake low cost, and meet traditional design.Four-wheel car is in braking procedure, due to used
Property effect, the load of front-wheel usually accounts for the 70%-80% of automobile whole load, and front wheel brake power is bigger than trailing wheel, and trailing wheel rises auxiliary
Braking action is helped, therefore Automotive producer just uses the mode of braking of drum after shroud to save cost.But for heavy type
For car, since speed is generally not very high, the robustness of brake shoe is also higher than disk brake, therefore many heavy goods vehicles are extremely
The modern design for still using four hub types.
In slow moving vehicle and economical vehicle, drum brake is still optimal selection.
Utility model content
The utility model aims to provide a kind of simple in structure, strong drum brake of brake force.
The utility model adopts the following technical solution：
A kind of drum brake, including wheel hub, the wheel hub is interior to be equipped with braking parts and power part；
The braking parts include the column being located in wheel hub and the shoes being located on column；The column is surrounded in wheel hub
Heart line is uniformly arranged；The shoes is fixed in brake(-holder) block including a brake(-holder) block that can be bonded with wheel hub rubbing surface, two
The reinforcing sheet of side, the friction plate being located on brake(-holder) block outer surface and the slot hole being opened in reinforcing sheet；
The power part includes hydraulic part and piston；
The hydraulic part includes an input terminal and four output terminals；The piston is located in output terminal；The piston
One end is contacted with shoes.
As further solution：The quantity of the column is four；The quantity of the shoes is two；Each institute
The quantity for stating the slot hole on shoes is two；The column passes through the slot hole on the shoes.
As further solution：The center line of the slot hole intersects with the center line of wheel hub.
As further solution：The piston includes seal section and the active section being fixedly connected with seal section；Institute
The diameter for stating seal section is less than the diameter of active section.
As further solution：The seal section is equipped with groove；The cross sectional shape of the groove is semicircle；
The groove is equipped with sealing ring；The quantity of the groove is three.
As further solution：The shoes further includes cylinder；One end of the cylinder is fixed with brake(-holder) block to be connected
Connect, the other end is contacted with active section；The side of the cylinder is fixedly connected with reinforcing sheet.
As further solution：The center line of the cylinder and the centerline parallel of slot hole.
As further solution：Further include adjustment spring A and adjustment spring B；The both ends point of the adjustment spring A
It is not connected with two shoes；The both ends of the adjustment spring B are connected with two shoes respectively.
As further solution：The adjustment spring A and adjustment spring B are arranged symmetrically in wheel hub.
As further solution：One end face of the cylinder is equipped with pressure sensor；The pressure sensing
The other end of device is contacted with active section；The pressure sensor is connected with ECU.
The good effect that the utility model produces is as follows：
The structure of the utility model is simpler, and manufacture cost is lower, and Measuring error is also more convenient.Traditional drum-type is set
The designs such as linkage spring, the adjustment of automatic spacing are employed in meter, its purpose is to ensure between shoes and wheel hub rubbing surface
Suitable distance and shoes can playback rapidly after the completion of braking procedure.It is omitted altogether, is employed in the utility model
Two shoes are withdrawn into initial position by simpler design by adjusting spring A and adjustment spring B, while pass through pressure
Frictional force between Sensor monitoring shoes and wheel hub rubbing surface understands actual working condition.When braking maneuver starts,
Piston applies pressure to shoes, and shoes is contacted with wheel hub rubbing surface, when driver floors brake, the feedback of pressure sensor
Numerical value reaches peak value, if the fed back values are consistent with preset value, illustrate the utility model work normally, it is on the contrary then need into
Row maintenance；After braking stops, piston disappears the thrust of shoes, adjusts spring A at this time and adjustment spring B pulls shoes to return,
The fed back values of pressure sensor also begin to fall after rise, and piston returns to stop motion after initial position, the feedback of pressure sensor
Numerical value also falls back to initial value, at this time, illustrates that utility model works are normal, when the fed back values of pressure sensor are less than just
During beginning numerical value, illustrate to adjust spring A and adjust spring B aging, be unable to reach requirement, it is necessary to be replaced.By this
Design, not only simplifies the structure of drum brake, and detection can also be carried out by ECU, and maintenance personal can pass through ECU
Data directly judged, not only simplify checking process, and judging result is more accurate.
The braking effect of the utility model is more preferable, using the teaching of the invention it is possible to provide the frictional force of bigger.Conventional drum brake is to pass through
Thrust is applied to one end of shoes, and then shoes is contacted with the rubbing surface of wheel hub and produces frictional force to reach braking effect.
Shoes is big close to the frictional force that the part of thrust application point produces during this, and the partial frictional power away from thrust application is small,
The whole service wear of shoes is uneven, and the frictional force of generation linearly reduces also with the increase for applying point distance with thrust.
After shoes is replaced, a part of serious wear of working surface, another part mild wear, not only braking effect is undesirable, does not wear
This part can not reuse, can only abandon.And in the utility model, each shoes is promoted by two pistons,
In braking procedure, the working surface of shoes can be completely attached on the rubbing surface of wheel hub, and contact area greatly improves, frictional force
Also can rise rapidly；After contact area improves, wear extent is shared equally, and the rate of wear of shoes declines, and service life extends.For
For vehicle, braking distance can be shortened, improve the security of traveling.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of wheel hub；
Fig. 3 is the structure diagram of shoes；
Fig. 4 is the structure diagram of piston；
Fig. 5 is the structure diagram of hydraulic part；
Wherein：1 wheel hub, 2 columns, 3 shoes, 31 brake(-holder) blocks, 32 reinforcing sheets, 33 friction plates, 34 slot holes, 35 cylinders, 4 hydraulic pressure
Part, 41 input terminals, 42 output terminals, 5 pistons, 51 seal sections, 52 active sections, 53 grooves, 54 sealing rings, 6 adjustment spring A, 7 adjustment
Spring B, 8 pressure sensors.
Embodiment
The utility model is further described with reference to Fig. 1-5.
The utility model adopts the following technical solution：
A kind of drum brake, including wheel hub 1, the wheel hub 1 is interior to be equipped with braking parts and power part；
The braking parts include the column 2 being located in wheel hub 1 and the shoes 3 being arranged on column 2；The column 2 surrounds
The center line of wheel hub 1 is uniformly arranged；It is solid that the shoes 3 includes a brake(-holder) block that can be bonded with 1 rubbing surface of wheel hub 31, two
It is scheduled on reinforcing sheet 32, the friction plate 33 being located on 31 outer surface of brake(-holder) block and the length being opened in reinforcing sheet 32 of the inner side of brake(-holder) block 31
Hole 34；
The power part includes hydraulic part 4 and piston 5；
The hydraulic part 4 includes an input terminal 41 and four output terminals 42；The piston 5 is located in output terminal 42；Institute
The one end for stating piston 5 is contacted with shoes 3.
As further solution：The quantity of the column 2 is four；The quantity of the shoes 3 is two；Each
The quantity of slot hole 34 on the shoes 3 is two；The column 2 passes through the slot hole 34 on the shoes 3.
As further solution：The center line of the slot hole 34 intersects with the center line of wheel hub 1.
As further solution：The piston 5 includes seal section 51 and the work being fixedly connected with seal section 51
Section 52；The diameter of the seal section 51 is less than the diameter of active section 52.
As further solution：The seal section 51 is equipped with groove 53；The cross sectional shape of the groove 53 is
It is semicircle；The groove 53 is equipped with sealing ring 54；The quantity of the groove 53 is three.
As further solution：The shoes 3 further includes cylinder 35；One end of the cylinder 35 and brake(-holder) block 31
It is fixedly connected, the other end is contacted with active section 52；The side of the cylinder 35 is fixedly connected with reinforcing sheet 32.
As further solution：The center line of the cylinder 35 and the centerline parallel of slot hole 34.
As further solution：Further include adjustment spring A6 and adjustment spring B 7；The two of the adjustment spring A6
End is connected with two shoes 3 respectively；The both ends of the adjustment spring B 7 are connected with two shoes 3 respectively.
As further solution：The adjustment spring A6 and adjustment spring B 7 are arranged symmetrically in wheel hub 1.
As further solution：One end face of the cylinder 35 is equipped with pressure sensor 8；The pressure passes
The other end of sensor 8 is contacted with active section 52；The pressure sensor 8 is connected with ECU.
In use, tire is installed on wheel hub 1, then wheel hub 1 is installed on the rear axle of vehicle, hydraulic part 4 is installed
On vehicle chassis, input terminal 41 is connected with vehicle-mounted hydraulic pump, and pressure sensor 8 and ECU should partly belong to of the prior art
Vehicle is installed and package technique, is not repeating herein.
The utility model is further described below by the whole braking procedure of vehicle.
When driver has found to need to carry out vehicle braking, brake is stepped in driver's cabin, at this time vehicle-mounted hydraulic pump startup, by liquid
Pressure oil is pressed into hydraulic part 4 by input terminal 41, and hydraulic oil respectively enters output terminal 42, by pressure transmission to piston 5, promotes piston
5 move out.
Piston 5 divides to be located in the output terminal 42 of hydraulic part 4 for seal section 51 and active section 52, wherein seal section 51, work
Section 52 is outside hydraulic part 4.Seal section 51 is equipped with three seals circle 54, can play better seal effect, on the one hand protect
Card hydraulic oil is not revealed, and on the other hand ensures the presence in gap between seal section 51 and output terminal 42, reduces rubbing therebetween
Wipe, improve service life.
Piston 5 moves out, and promotes shoes 3 to be moved to close to the direction of 1 rubbing surface of wheel hub, rubbing surface refers to hoof herein
The face of friction plate 33 and wheel hub 1 contact of iron 3, produces frictional force in this face, realizes braking effect.Shoes 3 is in close mistake
Cheng Zhong, slot hole 34 are moved to close to the direction of 1 rubbing surface of wheel hub relative to the column 2 on wheel hub 1 and moved, the effect rule of column 2
The direction of motion of model shoes 3, while ensure that the two blocks shoes 3 after contact, make the two not occur to slide relatively, ensure system
Dynamic effect, will not produce the situation that car body irregularly shakes in braking procedure.
Because being that two pistons 5 promote shoes 3, the friction plate 33 of shoes 3 can completely be attached to the friction of wheel hub 1
On face, friction area increase can be in frictional force of the short time to interior offer bigger；Unit area pressure reduces at the same time, abrasion
Also can reduce, the service life of shoes 3 extends therewith.Friction area increase means that the heat that friction produces can be divided at the same time
Load, thermal deformation reduce, and can also improve braking effect.
When driver removes foot from brake, vehicle-mounted hydraulic pump counteragent, hydraulic oil is drawn back, piston 5 is reversely transported
It is dynamic, pressure no longer is applied to shoes 3.Adjustment spring A6 and adjustment spring B 7 act, and shoes 3 is retracted initial position.
The effect of pressure sensor 8 is divided into two parts.
The pressure between 1 rubbing surface of shoes 3 and wheel hub is detected when Part I is braking maneuver.The stroke of piston 5 is limited,
When piston 5 reaches capacity stroke, the pressure of shoes 3 is not further added by.With the abrasion of shoes 3, shoes 3 rubs with wheel hub 1
The deformation in face is also less and less, and pressure can also diminish therewith, and when pressure therebetween reduces, pressure sensor 8 feeds back meeting
The numerical value of ECU can also reduce, when numerical value be reduced to one timing, illustrate that the wear extent of shoes 3 has had reached the journey needed replacing
Degree, the working condition of shoes 3 can be directly determined by the numerical value read in ECU, and detection is more convenient, it might even be possible to is driving
Sail interior and be separately provided a warning lamp, facilitate driver to understand the working condition of hub brake at any time, when warning lamp is bright
When rising, driver can immediately know that hub brake is needed repairing or replaced.
The Part II of pressure sensor 8 is to detect pressure between shoes 3 and piston 5 in the case of attonity.Attonity
In the case of, whole components is respectively positioned on initial position, and the pressure between shoes 3 and piston 5 is exactly to adjust spring A6 and tune at this time
Pulling force in whole spring B 7.When adjusting spring A6 and adjustment spring B 7 starts aging, this pulling force reduces therewith, pressure sensing
The fed back values of device 8 are also just less and less.After adjusting spring A6 and adjustment 7 aging of spring B, it may appear that shoes 3 playbacks not exclusively
Or situation about can not playback, shoes 3 and the distance between 1 rubbing surface of wheel hub are less than normal, it may appear that shoes 3 and wheel during traveling
The situation that 1 rubbing surface of hub discontinuously contacts, not only increases the consumption of fuel oil, and the situation of unordered vibrations occurs in vehicle, no
By being to driving experience or can all produce certain influence to vehicle ages.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that, it still may be used
To modify to the technical solution described in previous embodiment, or equivalent substitution is carried out to which part technical characteristic, and
These modifications are replaced, and the essence of appropriate technical solution is departed from the spirit and model of technical solution of the embodiment of the present invention
Enclose.
Claims (10)
1. a kind of drum brake, including wheel hub（1）, it is characterised in that：The wheel hub（1）It is interior to be equipped with braking parts and power part；
The braking parts include being located at wheel hub（1）Interior column（2）Be located at column（2）On shoes（3）；The column（2）
Around wheel hub（1）Center line be uniformly arranged；The shoes（3）Can be with wheel hub including one（1）The braking of rubbing surface fitting
Piece（31）, two be fixed on brake(-holder) block（31）The reinforcing sheet of inner side（32）, be located at brake(-holder) block（31）Friction plate on outer surface
（33）Be opened in reinforcing sheet（32）On slot hole（34）；
The power part includes hydraulic part（4）And piston（5）；
The hydraulic part（4）Including an input terminal（41）With four output terminals（42）；The piston（5）It is located at output terminal（42）
It is interior；The piston（5）One end and shoes（3）Contact.
A kind of 2. drum brake according to claim 1, it is characterised in that：The column（2）Quantity be four；Institute
State shoes（3）Quantity be two；Each shoes（3）Upper slot hole（34）Quantity be two；The column（2）Through institute
State shoes（3）On slot hole（34）.
A kind of 3. drum brake according to claim 2, it is characterised in that：The slot hole（34）Center line and wheel hub
（1）Center line intersect.
A kind of 4. drum brake according to claim 3, it is characterised in that：The piston（5）Including seal section（51）
With with seal section（51）The active section being fixedly connected（52）；The seal section（51）Diameter be less than active section（52）Diameter.
A kind of 5. drum brake according to claim 4, it is characterised in that：The seal section（51）It is equipped with groove
（53）；The groove（53）Cross sectional shape for semicircle；The groove（53）It is equipped with sealing ring（54）；The groove（53）
Quantity be three.
A kind of 6. drum brake according to claim 4, it is characterised in that：The shoes（3）Further include cylinder（35）；
The cylinder（35）One end and brake(-holder) block（31）It is fixedly connected, the other end and active section（52）Contact；The cylinder（35）'s
Side and reinforcing sheet（32）It is fixedly connected.
A kind of 7. drum brake according to claim 6, it is characterised in that：The cylinder（35）Center line and slot hole
（34）Centerline parallel.
A kind of 8. drum brake according to claim 2, it is characterised in that：Further include adjustment spring A（6）With adjustment bullet
Spring B（7）；The adjustment spring A（6）Both ends respectively with two shoes（3）Connection；The adjustment spring B（7）Both ends difference
With two shoes（3）Connection.
A kind of 9. drum brake according to claim 8, it is characterised in that：The adjustment spring A（6）With adjustment spring
B（7）In wheel hub（1）Inside it is arranged symmetrically.
A kind of 10. drum brake according to claim 6, it is characterised in that：The cylinder（35）An end face on
Equipped with pressure sensor（8）；The pressure sensor（8）The other end and active section（52）Contact；The pressure sensor（8）
It is connected with ECU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721308617.5U CN207315912U (en) | 2017-10-12 | 2017-10-12 | A kind of drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721308617.5U CN207315912U (en) | 2017-10-12 | 2017-10-12 | A kind of drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207315912U true CN207315912U (en) | 2018-05-04 |
Family
ID=62429850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721308617.5U Active CN207315912U (en) | 2017-10-12 | 2017-10-12 | A kind of drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207315912U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667856A (en) * | 2018-12-30 | 2019-04-23 | 河北百龙汽车配件制造有限公司 | A kind of bidirectional high-efficiency heat dissipation drum brake system |
| CN111577790A (en) * | 2020-04-10 | 2020-08-25 | 周长虹 | Two-way leading hoof type brake mechanism based on drum is stopped |
| WO2022056928A1 (en) * | 2020-09-21 | 2022-03-24 | 西门子（中国）有限公司 | Brake mechanism, robot joint brake mechanism, method therefor, and robot joint |
-
2017
- 2017-10-12 CN CN201721308617.5U patent/CN207315912U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667856A (en) * | 2018-12-30 | 2019-04-23 | 河北百龙汽车配件制造有限公司 | A kind of bidirectional high-efficiency heat dissipation drum brake system |
| CN109667856B (en) * | 2018-12-30 | 2021-03-02 | 河北百龙汽车配件股份有限公司 | Bidirectional efficient heat dissipation drum type braking device |
| CN111577790A (en) * | 2020-04-10 | 2020-08-25 | 周长虹 | Two-way leading hoof type brake mechanism based on drum is stopped |
| WO2022056928A1 (en) * | 2020-09-21 | 2022-03-24 | 西门子（中国）有限公司 | Brake mechanism, robot joint brake mechanism, method therefor, and robot joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220902 Address after: 056000 West Jianye street, Weixian Development Zone, Handan City, Hebei Province Patentee after: Hebei Weikete Machinery Technology Co.,Ltd. Address before: 056800 Weixian Economic Development Zone, Handan City, Hebei Province Patentee before: HEBEI ASTERIA TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |