CN205872344U - Drum brake mechanism - Google Patents
Drum brake mechanism Download PDFInfo
- Publication number
- CN205872344U CN205872344U CN201620822866.5U CN201620822866U CN205872344U CN 205872344 U CN205872344 U CN 205872344U CN 201620822866 U CN201620822866 U CN 201620822866U CN 205872344 U CN205872344 U CN 205872344U
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- brake
- shoes
- fixed disk
- drum
- cam
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Abstract
The utility model discloses a drum brake mechanism for solve prior art's the relatively poor problem of braking force volume, include: the brake lever assembly, fare assembly in an instant, a fixed disk, a wheel hub and a brake arm, the brake lever assembly includes a brake lever and a fixing base, the brake bar pivot is located on the fixing base, brake line assembly includes a pipe and a wire, the wire is connected with the brake lever, the fixed disk includes a first brake shoes, a second brake shoes, a brake cam and a locating pin, brake cam and locating pin are established to first brake shoes and second brake shoes clamp, the wheel hub cover is located on the fixed disk, brake arm pivot is located on the fixed disk and its both ends are connected with wire and brake cam respectively, the brake cam forms 1 the 1st circular arc camber and 1 the 2nd circular arc camber, the locating pin forms a protrusion bulb. By this, the brake ability of vehicle can obtain to improve.
Description
Technical field
This utility model is about a kind of drum brake mechanism, and espespecially one utilizes brake cam, alignment pin and brake shoes
Structure design improve the drum brake mechanism of braking ability.
Background technology
Personal Transporter conventional now typically has automobile and locomotive, the vehicles of locomotive form to be a kind of by engine
Or motor drives, the two of bar handle direction is mainly utilized to take turns, the vehicle of three-wheel or four-wheel etc., owing to there being manipulation simple, OK
Dynamic convenient and cheap feature, becomes the vehicles the most often utilized at present, reaches including the most common Suke
(Scooter), beat shelves car (Motorcycle) and cross-country type beach buggy (ATV beach buggy: All Terrain Vehicle, also known as
All-terrain vehicle) etc..
For the brake unit of vehicle, generally can be divided into drum and stop and the brake system of disc brake, the brake system advantage that drum is stopped
For simple in construction and easy for installation, the brake system advantage of disc brake is strong for brake strength and dispels the heat good.
Refering to Fig. 1 to Fig. 3, it is respectively the one side structural representation of existing drum brake mechanism, another side structure
Schematic diagram and part-structure perspective exploded view, existing drum brake mechanism is arranged on a wheel set of a vehicle, drum
Formula braking mechanism includes: brake lever assembly 10, brake cable assembly 11, fixed disk 12, brake arm 13 and a wheel hub 15.
Brake lever assembly 10 includes that a brake lever 101 and fixes seat 102, and brake lever 101 is hubbed on fixing seat 102,
Brake cable assembly 11 includes conduit 111 and a wire 112, and wire 112 wears conduit 111 and is connected with brake lever 101, fixing
Dish 12 includes first brake shoe plate 121,1 second brake shoes 122, brake cam 123, alignment pin 124, two stretching
Spring 125 and a positioning seat 126, first brake shoe plate 121 and the second brake shoes 122 sandwiched brake cam 123 and alignment pin
124, wheel hub 15 is sheathed on fixed disk 12 rotationally, and brake arm 13 is hubbed on fixed disk 12, its two ends respectively with wire 112
And brake cam 123 connects.
The one end 111a of conduit 111 is fixedly arranged on the fixing seat 102 of brake lever assembly 10, and wire 112 has one end
Thread 112a, end thread 112a adjust nut 112b by one and are fixedly arranged on brake arm 13, therefore, by brake operation first
Brake shoes 121 and the second brake shoes 122 rotate with alignment pin 124 for fulcrum, abut the inside cylindrical table of wheel hub 15
Face 15a is to reach braking effect.
Specifically, when vehicle rider is intended to that wheel hub 15 is carried out brake operation, rider can pull brake lever 101
Pulling wire 112, the brake arm 13 being connected to wire 112 rotates an angle, and now, the brake being connected to brake arm 131 is convex
Wheel 123 also can with rotation one angle so that first brake shoe plate 121 and the second brake shoes 122 with alignment pin 124 for rotation
Fulcrum and strut up and down, first brake shoe plate 121 and the second brake shoes 122 herein are circle with alignment pin 124 place of abutting
Cylinder contacts, and first brake shoe plate 121 and the second brake shoes 122 are with to rotate the brake cam 123 after an angle be straight line
Contact.
Refering to Fig. 3, in existing drum brake mechanism, alignment pin 124 formed a cylinder and respectively with first brake hoof
Sheet 121 and the second brake shoes 122 abut, and brake cam 123 is then to form a platy structure with two planes difference
Abut with first brake shoe plate 121 and the second brake shoes 122, but, due to the error on manufacturing, first brake hoof can be made
When sheet 121 and the second brake shoes 122 abut with the inside cylindrical surface 15a of wheel hub 15, its area that contacts with each other is unable to reach
Maximum, implies that on the width of outer surface of first brake shoe plate 121 and the second brake shoes 122, and in wheel hub 15
The contact area of side periphery 15a is uneven, or produces single edge contact situation, causes brake strength poor, especially exists
The running-in period of brake system.
Utility model content
This utility model provides a kind of drum brake mechanism, for solving poor the asking of brake strength of prior art
Topic, to reach to improve the purpose of braking ability.
Drum brake mechanism of the present utility model is arranged on a wheel set of a vehicle, and drum brake mechanism includes:
One brake lever assembly, a brake cable assembly, a fixed disk, a wheel hub and a brake arm.Brake cable assembly include a brake lever and
One fixes seat, and brake lever is hubbed on fixing seat；Brake cable assembly includes a conduit and a wire, wire wear conduit and with stop
Car bar connects；Fixed disk includes a first brake shoe plate, one second brake shoes, a brake cam and an alignment pin, and first stops
Car shoe plate and the second brake shoes sandwiched brake cam and alignment pin；Wheel hub is sheathed on fixed disk rotationally；Brake arm is pivoted
On fixed disk, two ends are connected with wire and brake cam respectively.Of the present utility model being characterised by, first brake shoe plate can shape
Becoming one first to keep out plane, the second brake shoes can form one second and keep out plane, and brake cam can form one and keep out with first
Plane and second keeps out plane the first circular arc camber that correspondence abuts respectively and the second circular arc camber, and first brake shoe plate can shape
Becoming one first hemispherical groove, the second brake shoes can form one second hemispherical groove, and alignment pin can form one and the first half
Ball recess and the second hemispherical groove protrusion bulb that correspondence abuts respectively.
Above-mentioned fixed disk more can include a positioning seat arranging brake cable assembly.
This utility model more can include a returning spring forcing in brake arm.
Can have the place of abutting between above-mentioned first brake shoe plate and the second brake shoes and alignment pin and form one respectively
First gap and one second gap.
Above-mentioned fixed disk more can include at least one connection first brake shoe plate and the stretching spring of the second brake shoes.
Above-mentioned vehicle more can include two grip portion, and brake lever assembly may be disposed at least one of two grip portion
Above-mentioned wheel set can refer at least one of the front-wheel of vehicle and trailing wheel.
One end of above-mentioned wire can form one end thread, and end thread can adjust nut by one and be fixedly arranged on brake arm
On.
Above-mentioned vehicle can refer to a locomotive, reaches including the most common Suke, beats shelves car and ATV beach buggy, but does not limit to
In this, also there is the vehicle of other form of a wheel set.
Outlined above with ensuing detailed description, it be all exemplary in nature, be of the present utility model in order to further illustrate
Claim, for making above-mentioned purpose of the present utility model, the characteristic can be more clear and easy to understand with advantage, by follow-up explanation with
Diagram is illustrated by.
Accompanying drawing explanation
The one side structural representation of the existing drum brake mechanism of Fig. 1 system.
The another side structural representation of the existing drum brake mechanism of Fig. 2 system.
The part-structure perspective exploded view of the existing drum brake mechanism of Fig. 3 system.
The one side structural representation of the drum brake mechanism of Fig. 4 system preferred embodiment of the present utility model.
Structural profile schematic diagram at the A-A of Fig. 5 system Fig. 4.
Structural profile schematic diagram at the B-B of Fig. 6 system Fig. 4.
The part-structure perspective exploded view of the drum brake mechanism of Fig. 7 system preferred embodiment of the present utility model.
[symbol description]
10 brake lever assembly 101 brake lever
102 fix seat
11 brake cable assembly 111 conduits
111a end 112 wire
112a end thread 112b adjusts nut
12 fixed disk 121 first brake shoe plates
122 second brake shoes 123 brake cams
124 alignment pins 125 stretch spring
126 positioning seats
13 brake arms
15 wheel hub 15a inside cylindrical surfaces
20 brake lever assembly 201 brake lever
202 fix seat
21 brake cable assembly 211 conduits
212 wire 212a end threads
212b adjusts nut
22 fixed disk 221 first brake shoe plates
222 second brake shoes 223 brake cams
224 alignment pins 225 stretch spring
226 positioning seats
23 brake arms
24 returning springs
25 wheel hub 25a inside cylindrical surfaces
B protrudes bulb
C1 the first circular arc camber C2 the second circular arc camber
D1 rotation direction D2 rotation direction
G1 the first clearance G 2 second gap
P1 first keeps out plane P2 second and keeps out plane
S1 the first hemispherical groove S2 the second hemispherical groove
Detailed description of the invention
Understand for the ease of persons skilled in the art and realize this utility model, describing this practicality in conjunction with accompanying drawing new
The embodiment of type.
Refering to Fig. 4 to Fig. 7, the one side of its drum brake mechanism being respectively a preferred embodiment of the present utility model is tied
Structure schematic diagram, Fig. 4 A-A at structural profile schematic diagram, Fig. 4 B-B at structural profile schematic diagram and part-structure stereo decomposing
Schematic diagram.
Drum brake mechanism of the present utility model is arranged on a vehicle, and vehicle has a wheel set and two grip portion,
Drum brake mechanism includes: brake lever assembly 20, brake cable assembly 21, fixed disk 22, brake arm 23, replys bullet
Spring 24 and a wheel hub 25.
Brake lever assembly 20 includes that a brake lever 201 and fixes seat 202, and brake lever 201 is hubbed on fixing seat 202,
Brake cable assembly 21 includes conduit 211 and a wire 212, and wire 212 wears conduit 211, and its one end is with brake lever 201 even
Connect, the other end formed one end thread 212a, fixed disk 22 include first brake shoe plate 221,1 second brake shoes 222,
One brake cam 223, alignment pin 224, two stretching spring 225 and a positioning seat 226, first brake shoe plate 221 and second is stopped
Car shoe plate 222 sandwiched brake cam 223 and alignment pin 224, wheel hub 25 is sheathed on fixed disk 22, two stretching springs rotationally
225 connect first brake shoe plate 221 and the second brake shoes 222, and positioning seat 226 is used for position brake line assembly 21, brake arm
23 are hubbed on fixed disk 22, and its two ends are connected with wire 212 and brake cam 223 respectively, and end thread 212a is by a tune
Whole nut 212b is fixedly arranged on brake arm 23, and returning spring 24 is arranged between brake arm 23 and positioning seat 226.
Of the present utility model being characterised by, first brake shoe plate 221 forms one first and keeps out plane P1, the second brake shoes
222 are formed and one second keep out plane P2, and brake cam 223 forms one and first and keeps out plane P1 and second and keep out plane P2 and distinguish
Corresponding the first circular arc camber C1 abutted and the second circular arc camber C2 (refering to Fig. 5 and Fig. 7), and first brake shoe plate 221 formed
One first hemispherical groove S1, the second brake shoes 222 forms one second hemispherical groove S2, and alignment pin 224 forms one and
One hemispherical groove S1 and the second hemispherical groove S2 protrusion bulb B (refering to Fig. 6 and Fig. 7) that correspondence abuts respectively, thereby change
The brake strength of kind drum brake mechanism.
Specifically, when vehicle rider pulls brake lever 201, after pulling brake arm 23 by wire 212, gearing is stopped
Car cam 223 also makes it rotate an angle, now, first brake shoe plate 221 and the second brake shoes 222 strutted up and down and with
Alignment pin 224 rotates for fulcrum, is with existing drum brake mechanism difference, when first brake shoe plate 221 and second is stopped
When car shoe plate 222 is strutted up and down because of brake cam 223, utilize the first circular arc camber C1 and second circle of brake cam 223
Arc surface C2, coordinates first to keep out plane P1 and second and keeps out the structure design of plane P2, can bear against the first circular arc bent
A certain degree of rotation is carried out on face C1 and the second circular arc camber C2 and in clockwise or counterclockwise, as it is shown in figure 5,
First brake shoe plate 221 makees the rotation of clockwise or counterclockwise with rotation direction D1, and the second brake shoes 222 is to turn
Dynamic direction D2 makees the rotation of clockwise or counterclockwise.
Hold, now as the protrusion bulb B of alignment pin 224 of fulcrum, coordinate the first hemispherical groove S1 and the second half
The structure design of ball recess S2, is designed by the structure protruding bulb B, can corresponding first brake shoe plate 221 and the second brake
Shoe plate 222 is in the first circular arc camber C1 and the change in location of the second circular arc camber C2, respectively at clockwise direction or square counterclockwise
To carrying out a certain degree of rotation, as shown in Figure 6, first brake shoe plate 221 corresponding first circle at the first hemispherical groove S1
The rotation of clockwise or counterclockwise is made in the rotation of arc surface C1 with rotation direction D1, and the second brake shoes 222 is
At two hemispherical groove S2, the rotation of corresponding second circular arc camber C2 makees clockwise or counterclockwise with rotation direction D2
Rotation, therefore, when being strutted by brake cam about 223 at first brake shoe plate 221 and the second brake shoes 222 and support wheel
While the inside cylindrical surface 25a of hub 25, first brake shoe plate 221 and the second brake shoes 222 can according to strength effect respectively
Automatically the rotation with rotation direction D1 and rotation direction D2 is carried out so that it is with the contact surface of inside cylindrical surface 25a phase mutual friction
Long-pending can acquisition adjusts in real time, to reach CONTACT WITH FRICTION area optimization, plays maximum brake strength.
Do not abut place here, have between first brake shoe plate 221 and the second brake shoes 222 and alignment pin 224 and divide
Xing Cheng one first clearance G 1 and one second clearance G 2, say, that first brake shoe plate 221 and the second brake shoes 222 are only
Abutting with alignment pin 224 at the protrusion bulb B of alignment pin 224, the place of abutting is then around protruding bulb B formation annular spaces
The first clearance G 1 and the second clearance G 2, thereby, when the first hemispherical groove S1 and second brake shoe of first brake shoe plate 221
When sheet 222 second hemispherical groove S2 abuts with protrusion bulb B and rotates, it is possible to provide sufficient space is with corresponding various angles
Rotation.
And when vehicle rider decontrols the brake lever 201 of brake lever assembly 20, two stretching springs 225 of fixed disk 22
Returning spring power can make first brake shoe plate 221 and the second brake shoes 222 abut, thus promotes brake cam 223 also
Drive brake arm 23 to rotate back to initial position, and the returning spring 24 being arranged between brake arm 23 and positioning seat 226 is sheathed on
On brake cable assembly 21, its two ends abut with brake arm 23 and positioning seat 226 respectively, and returning spring 24 forces in brake arm 23,
Provide the returning spring power promoting brake arm 23 to return to initial position.
It addition, at the end thread 212a of the wire 212 of brake cable assembly 21, coordinate the structure adjusting nut 212b to set
Meter, except providing brake cable assembly 21 to be fixedly arranged in addition to the function on brake arm 23, it is possible to change adjustment nut 212b locks position
Put and adjust vehicle rider and pull the brake play of brake lever 201 when brake.
Wheel set refers at least one of the front-wheel of vehicle and trailing wheel, and brake lever assembly 20 is arranged at two grip portion
At least one, say, that drum brake mechanism of the present utility model can only use in the front-wheel of vehicle or trailing wheel, and another
One takes turns the brake system using disc brake, also or front-wheel and trailing wheel all use drum brake mechanism, and the setting of brake lever assembly 20
Put and also coordinate change.
As shown in the above, drum brake mechanism of the present utility model, utilize the first circle that brake cam 223 is formed
Arc surface C1 and the second circular arc camber C2, the protrusion bulb B that alignment pin 224 is formed, coordinate first brake shoe plate 221 and second
Brake shoes 222 counter structure design, make first brake shoe plate 221 and the second brake shoes 222 when brake operation is carried out,
Available autologous rotation adjusts the CONTACT WITH FRICTION area of the inside cylindrical surface 25a with wheel hub 25 in real time, and rubs with maximum
Wipe contact area and the 25a phase mutual friction of inside cylindrical surface, produce maximum brake strength, and then reach to improve the mesh of braking ability
's.
Although depicting this utility model by embodiment, but it will be appreciated by the skilled addressee that without departing from this reality
In the case of novel spirit and essence, so that it may make this utility model have many deformation and change, scope of the present utility model
It is limited to the appended claims.
Claims (8)
1. a drum brake mechanism, is arranged on a wheel set of a vehicle, it is characterised in that this drum brake mechanism bag
Include:
One brake lever assembly, fixes seat including a brake lever and one, and this brake lever is hubbed on this fixing seat；
One brake cable assembly, including a conduit and a wire, this wire wears this conduit and is connected with this brake lever；
One fixed disk, including a first brake shoe plate, one second brake shoes, a brake cam and an alignment pin, this first is stopped
Car shoe plate and this second brake shoes this brake cam of sandwiched and this alignment pin；
One wheel hub, is sheathed on this fixed disk rotationally；And
One brake arm, is hubbed on this fixed disk, and its two ends are connected with this wire and this brake cam respectively；
Wherein, this first brake shoe plate forms one first and keeps out plane, and this second brake shoes forms one second and keeps out plane, should
Brake cam forms one and first keeps out plane and this second is kept out plane and distinguish first circular arc camber and the of corresponding abutting with this
Two circular arc cambers, and this first brake shoe plate formation one first hemispherical groove, this second brake shoes forms one second hemisphere
Connected in star, this alignment pin formation one and this first hemispherical groove and the protrusion ball of this second hemispherical groove corresponding abutting respectively
Portion.
2. drum brake mechanism as claimed in claim 1, it is characterised in that this first brake shoe plate and this second brake shoes
Do not abut place with having between this alignment pin and form one first gap and one second gap respectively.
3. drum brake mechanism as claimed in claim 1, it is characterised in that this fixed disk also include at least one connection this first
The stretching spring of brake shoes and this second brake shoes.
4. drum brake mechanism as claimed in claim 1, it is characterised in that this fixed disk also includes, and to arrange this brake cable total
The positioning seat become.
5. drum brake mechanism as claimed in claim 1, it is characterised in that this vehicle also includes that forces in this brake arm
Returning spring.
6. drum brake mechanism as claimed in claim 1, it is characterised in that this vehicle also includes two grip portion, this brake lever
Assembly is arranged at least one of this two grip portion.
7. drum brake mechanism as claimed in claim 1, it is characterised in that this wheel set refers to front-wheel and the trailing wheel of this vehicle
At least one.
8. drum brake mechanism as claimed in claim 1, it is characterised in that one end of this wire forms one end thread, should
End thread adjusts nut by one and is fixedly arranged on this brake arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620822866.5U CN205872344U (en) | 2016-08-01 | 2016-08-01 | Drum brake mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620822866.5U CN205872344U (en) | 2016-08-01 | 2016-08-01 | Drum brake mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205872344U true CN205872344U (en) | 2017-01-11 |
Family
ID=57700153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620822866.5U Active CN205872344U (en) | 2016-08-01 | 2016-08-01 | Drum brake mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205872344U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106966323A (en) * | 2017-05-05 | 2017-07-21 | 浙江金华文瑞机电有限公司 | A kind of hand hydraulic carrier |
| CN113207326A (en) * | 2021-05-12 | 2021-08-06 | 王华秀 | Household soil loosening equipment |
| CN113911246A (en) * | 2020-07-10 | 2022-01-11 | 厦门厦杏摩托有限公司 | Improved structure of linkage brake system |
-
2016
- 2016-08-01 CN CN201620822866.5U patent/CN205872344U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106966323A (en) * | 2017-05-05 | 2017-07-21 | 浙江金华文瑞机电有限公司 | A kind of hand hydraulic carrier |
| CN113911246A (en) * | 2020-07-10 | 2022-01-11 | 厦门厦杏摩托有限公司 | Improved structure of linkage brake system |
| CN113207326A (en) * | 2021-05-12 | 2021-08-06 | 王华秀 | Household soil loosening equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |