CN206190772U - Self -modulation manpower drive's drum brake - Google Patents
Self -modulation manpower drive's drum brake Download PDFInfo
- Publication number
- CN206190772U CN206190772U CN201621244841.8U CN201621244841U CN206190772U CN 206190772 U CN206190772 U CN 206190772U CN 201621244841 U CN201621244841 U CN 201621244841U CN 206190772 U CN206190772 U CN 206190772U
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- CN
- China
- Prior art keywords
- brake
- ratchet
- shoe
- self
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a self -modulation manpower drive's drum brake. The stopper clearance of mainly having solved current manpower drive drum brake can not automatically regulated, need often change the problem of friction disc. Its characterized in that: the other end of two shoe brake (2) is equipped with rack (5) that relative up -down answered respectively, brake shoe actuating device (3) including gear (31), gear shaft (32) and swing arm (7), and gear shaft (32) are run through and are installed on brake backing plate (1), be connected with between two shoe brake (2) automatic gap adjuster (8), automatic gap adjuster (8) all are equipped with the stopper clearance and inject hole (84) including sleeve pipe (81) and ratchet bar (82) on two shoe brake (2). This drum brake has realized stopper clearance automatic compensation on manpower drive drum brake, improved life, has reduced maintenance and cost of upkeep, still has the characteristics of adjustment -free, easy assembly.
Description
Technical field
The utility model is related to a kind of Vehicular brake device, and in particular to a kind of self-regulated manually driven drum brake.
Background technology
Drum brake is a kind of common Vehicular brake device, and drum brake distinguishes main point according to driving source
For：Manually driven drum brake and the drum brake of dynamic braking.Available man-power drives drum brake including braking
Device base plate, two symmetrical shoe brakes, brake-shoes actuate device and return spring, and one end of two shoe brakes is hinged
On brake backing plate, the corresponding face of two other ends of shoe brake is provided with brake-shoe and actuates device and return spring, system
Dynamic hoof actuates device includes cam, camshaft and swing arm, and cam is placed between two shoe brakes, and swing arm passes through connecting lever, pull bar
It is to step on brake pedal using manpower Deng transmission mechanism connecting brake pedal, during brake, by drivers such as connecting lever, pull bars
Structure makes camshaft drive cam rotation, and then opens two shoe brakes, and shoe brake rubs with brake drum, produces system
Power and reach the purpose of brake.Because this manpower drives drum-like brake structure simple, low cost is widely used in low speed machine
On motor-car, agricultural vehicle, electro-tricycle, electric four-wheel vehicle, after this drum brake is assembled, shoe brake and brake drum it
Between gap（Hereinafter referred to as brake clearance）Appropriate clearance should be adjusted to, brake clearance is too small, it is impossible to which guarantee is solved completely
Except braking, brake clearance are excessive, reaction time of braking device is long, directly threatens traffic safety.In use, with
The abrasion of shoe brake, brake clearance can become larger, it is necessary to the size of running check brake clearance, is pacified with ensureing to drive a vehicle
Entirely.Because the structure that device is actuated by brake-shoe is limited, while the stroke of brake pedal is limited, therefore this manpower drives
Brake clearance self-checking device cannot be installed in drum brake, when brake clearance is excessive, friction plate can only be entered
Row is changed, it is necessary to often be maintained.
Brake-shoe in the drum brake of dynamic braking actuates that device uses hydraulic jack, cylinder or other are inhuman
The power source of power, such as cylinder type brake, liquid braking device, the drum brake of this dynamic braking do not receive structure and braking
The limitation of device pedal travel, can install brake clearance self-checking device, realize brake clearance compensation and regulation automatically,
But need to be equipped with hydraulic system or pneumatic system so that low-speed maneuver car etc. increases configuration, complex structure increased cost.
In sum, drive on drum brake how arrangement brake device gap self-checking device is urgently to solve in manpower
Problem certainly.
Utility model content
In order to the brake clearance for overcoming existing manpower driving drum brake can not be automatically adjusted, it is necessary to often change
The deficiency of friction plate, the utility model provides a kind of self-regulated manually driven drum brake, and the drum brake is in existing skill
The brake clearance self-checking device of tooth bar pawl structures is increased on the basis of art, while changing brake-shoe actuates device
Structure, and then driven in manpower and realize the automatic compensation of brake clearance on drum brake, improve service life, drop
Low maintenance and cost of upkeep, also with exempting from debugging, easily assembling the characteristics of.
The technical solution of the utility model is：A kind of self-regulated manually driven drum brake, including brake backing plate, two
Individual symmetrical shoe brake and brake-shoe actuate device, and one end of two shoe brakes is hinged on brake backing plate, and two
Return spring is provided between individual shoe brake, the other end of two shoe brakes is respectively equipped with tooth bar corresponding up and down, described
Brake-shoe actuates device includes gear, gear shaft and swing arm, and gear shaft is installed through on brake backing plate, and gear is placed in two
It is meshed between tooth bar on shoe brake and with tooth bar, the traversing through end of the gear shaft is by unidirectional torque transmission mechanism and pendulum
Arm is connected, and the direction of the unidirectional torque transmission mechanism transmitting torque can open shoe brake；Two shoe brakes it
Between be connected with gap self-checking device, the gap self-checking device includes sleeve pipe and ratchet bar, and ratchet bar is inserted into set
Simultaneously flexible in pipe, the port of sleeve pipe is provided with the ratchet and ratchet spring that mutually block with ratchet bar, the ratchet in the presence of ratchet
Bar can only be pulled out unidirectionally, brake clearance is equipped with two shoe brakes and limits hole, and sleeve pipe and ratchet bar pass through respectively
Pin is connected to brake clearance and limits on hole, and pin can be limited in brake clearance and moved in hole.
The unidirectional torque transmission mechanism is unilateral bearing or ratchet structure.
The unidirectional torque transmission mechanism is ratchet structure, and ratchet structure includes ratchet circle, ratchet support and spring, swing arm
End is provided with mounting hole, mounting hole side wall installs ratchet support and spring, and ratchet circle is placed in mounting hole and is supportted with ratchet and matches
Close, ratchet circle is fixedly connected with gear shaft.
The tooth bar above gear on the shoe brake and the tooth bar below gear are in circular arc, position
Tooth bar above gear and the tooth bar below gear are respectively internal tooth and external tooth, and internal tooth and external tooth respectively with brake-shoe
The pin joint of piece is the centre of gyration.
The brake clearance limits hole as " one " font hole.
The utility model has the advantages that：Due to taking above-mentioned technical proposal, swing arm is passed by connecting lever, pull bar etc.
Motivation structure connecting brake pedal, is to step on brake pedal using manpower during brake, through transmission mechanisms such as pull bar, connecting levers by power
Swing arm is delivered to, swing arm drives pinion rotation, and then promotion tooth bar makes two shoe brakes be flared out and occur with brake drum
Friction, reaches brake purpose.Brake clearance limits the length in hole to set by brake clearance, that is, pin is in brake
Gap limits the free travel in hole, after friction disc wear on shoe brake, if brake clearance more than pin from
By stroke, the ratchet bar in the self-checking device of gap is understood the certain length of auto-extending and is locked by ratchet, and ratchet bar stretches out
Length for ratchet spacing integral multiple, remain brake clearance in setting value.Due to being set between swing arm and gear shaft
Unidirectional torque transmission mechanism, swing arm can return to initial angle, and brake pedal no longer limited by range, reach maximum
Stroke rear-swing arm toward returning to initial position, therefore, gap self-checking device can automatic compensation brake gap, improve system
The service life of dynamic device, reduces maintenance and cost of upkeep.In addition, ratchet bar is entirely retracted in sleeve pipe in assembling, this
When shoe brake it is larger with the distance between brake drum, it is easy to be put into shoe brake, brake continuously stepped on after assembling and is stepped on
Plate, ratchet bar stretches out, and can be automatically adjusted to suitable brake clearance, with exempt from debugging, easily assemble the characteristics of.This practicality is new
Type dexterously solve the problems, such as people's long-standing problem manpower drive drum brake how automatic adjusting brake gap.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is the structural representation that brake-shoe actuates device 3 in Fig. 1.
Accompanying drawing 3 is A-A structure sectional views in Fig. 2.
Accompanying drawing 4 is enlarged drawing at B in Fig. 3.
Accompanying drawing 5 is the structure sectional view of Fig. 1 intermediate gaps self-checking device 8.
Accompanying drawing 6 is enlarged drawing at C in Fig. 5.
1- brake backing plates in figure, 2- shoe brakes, 3- brake-shoes actuate device, 31- gears, 32- gear shafts, 4- returns
Spring, 5- tooth bars, 6- unidirectional torque transmission mechanisms, 61- ratchet circles, the support of 62- ratchets, 63- springs, 64- mounting holes, 7- swing arms,
8- gaps self-checking device, 81- sleeve pipes, 82- ratchet bars, 83- ratchets, 84- brake clearances limit hole, 85- pins, 86-
Ratchet spring.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Fig. 1~Fig. 6, a kind of self-regulated manually driven drum brake, including brake backing plate 1, two is relative
The shoe brake 2 and brake-shoe of title actuate device 3, and two one end of shoe brake 2 are hinged on brake backing plate 1, two
Return spring 4 is provided between shoe brake 2, the other end of two shoe brakes 2 is respectively equipped with tooth bar 5 corresponding up and down, institute
State brake-shoe and actuate device 3 including gear 31, gear shaft 32 and swing arm 7, gear shaft 32 is installed through on brake backing plate 1,
It is meshed between the tooth bar 5 that gear 31 is placed on two shoe brakes 2 and with tooth bar 5, the traversing through end of the gear shaft 32 passes through
Unidirectional torque transmission mechanism 6 is connected with swing arm 7, and the direction of the transmitting torque of unidirectional torque transmission mechanism 6 can make braking
Shoe plate 2 opens；Gap self-checking device 8 is connected between two shoe brakes 2, the gap self-checking device 8 includes
Sleeve pipe 81 and ratchet bar 82, ratchet bar 82 are inserted into sleeve pipe 81 and flexible, and the port of sleeve pipe 81 is provided with and ratchet bar 82
The ratchet 83 and ratchet spring 86 for mutually blocking, ratchet bar 82 can only be pulled out unidirectionally in the presence of ratchet 83, two brake-shoes
Brake clearance is equipped with piece 2 and limits hole 84, sleeve pipe 81 and ratchet bar 82 are connected to brake clearance by pin 85 respectively
Limit on hole 84, pin 85 can be limited in brake clearance and moved in hole 84.Due to taking above-mentioned technical proposal, swing arm 7 is led to
The transmission mechanism connecting brake pedal such as connecting lever, pull bar is crossed, is to step on brake pedal using manpower during brake, through pull bar, turned
The transmission mechanisms such as arm transfer force to swing arm 7, and swing arm 7 is rotated with moving gear 31, and then promotion tooth bar 5 makes two shoe brakes 2
It is flared out and is rubbed with brake drum, reaches brake purpose.Brake clearance is limited the length in hole 84 by brake clearance
To set, that is, pin 85 limits the free travel in hole 84, the friction disc wear on shoe brake 2 in brake clearance
Afterwards, if brake clearance is more than the free travel of pin 85, the ratchet bar 82 in gap self-checking device 8 can auto-extending
Certain length is simultaneously locked by ratchet 83, and the length that ratchet bar 82 stretches out is the integral multiple of ratchet spacing, remains brake
Gap is in setting value.Due to being provided with unidirectional torque transmission mechanism 6 between swing arm 7 and gear shaft 32, swing arm 7 can be returned to initially
Angle, brake pedal is no longer limited by range, and brake pedal is lifted after reaching range, swing arm 7 in pull bar, turn
Initial position is rotated back into the presence of the transmission mechanisms such as arm, reset tension spring, now, the ratchet bar 82 for having stretched out is locked by ratchet 83
Surely will not retract, brake clearance has reached setting value, and brake pedal is stepped on again, recovery of braking back is normal.By
Gap self-checking device 8 can automatic compensation brake gap, improve the service life of brake, reduce maintenance and maintain
Cost.In addition, assembling when ratchet bar 82 is entirely retracted in sleeve pipe 81, now between shoe brake 2 and brake drum away from
From larger, it is easy to be put into shoe brake 2, brake pedal is continuously stepped on after assembling, ratchet bar 82 stretches out, and can adjust automatically
Save suitable brake clearance, with exempt from debugging, easily assemble the characteristics of.The utility model dexterously solves people and is stranded for a long time
Disturb manpower drive drum brake how the problem in automatic adjusting brake gap.
The unidirectional torque transmission mechanism 6 is unilateral bearing or ratchet structure.During design, according to bearing capacity and structure
Space voluntarily determines.
The unidirectional torque transmission mechanism 6 is ratchet structure, and ratchet structure includes that ratchet circle 61, ratchet supports 62 and spring
63, the end of swing arm 7 is provided with mounting hole 64, the side wall of mounting hole 64 installs ratchet support 62 and spring 63, and ratchet circle 61 is placed in peace
It is engaged in dress hole 64 and with ratchet support 62, ratchet circle 61 is fixedly connected with gear shaft 32.The structure is compact, takes up room
It is small, it is preferred embodiment.
The tooth bar 5 positioned at the top of gear 31 on the shoe brake 2 and the tooth bar 5 positioned at the lower section of gear 31 are in circle
Arc, internal tooth and external tooth are respectively positioned at the tooth bar 5 of the top of gear 31 and the tooth bar 5 positioned at the lower section of gear 31, and internal tooth and outer
Tooth pin joint respectively with shoe brake 2 is as the centre of gyration.Less gear backlash can be designed, while avoiding gear
It is stuck between 31 and tooth bar 5.
It is " one " font hole that the brake clearance limits hole 84.The length that brake clearance limits hole 84 defines pin
85 free travel, the length that hole 84 is limited by setting brake clearance determines brake clearance.In use, can
Keep brake clearance consistent all the time.
Above-described embodiment is not construed as the restriction to the utility model protection domain, any real based on the utility model spirit
The improvement that matter is made all should be within protection domain of the present utility model.
Claims (5)
1. a kind of self-regulated manually driven drum brake, including brake backing plate (1), two symmetrical shoe brakes (2)
And brake-shoe actuates device (3), one end of two shoe brakes (2) is hinged on brake backing plate (1), two shoe brakes
(2) return spring (4) is provided between, it is characterised in that：The other end of two shoe brakes (2) is respectively equipped with corresponding up and down
Tooth bar (5), the brake-shoe actuates device (3) includes gear (31), gear shaft (32) and swing arm (7), and gear shaft (32) runs through
On brake backing plate (1), between the tooth bar (5) that gear (31) is placed on two shoe brakes (2) and with tooth bar (5) phase
Engagement, the traversing through end of the gear shaft (32) is connected by unidirectional torque transmission mechanism (6) with swing arm (7), the unidirectional torsion
The direction of square transmission mechanism (6) transmitting torque can open shoe brake (2)；Between being connected between two shoe brakes (2)
Gap self-checking device (8), the gap self-checking device (8) includes sleeve pipe (81) and ratchet bar (82), ratchet bar (82)
It is inserted into sleeve pipe (81) and flexible, the port of sleeve pipe (81) is provided with the ratchet (83) and ratchet mutually blocked with ratchet bar (82)
Spring (86), ratchet bar (82) can only be pulled out unidirectionally in the presence of ratchet (83), be equipped with two shoe brakes (2)
Brake clearance limits hole (84), and sleeve pipe (81) and ratchet bar (82) are connected to brake clearance and limit by pin (85) respectively
On hole (84), pin (85) can be limited in brake clearance and moved in hole (84).
2. a kind of self-regulated manually driven drum brake according to claim 1, it is characterised in that：The unidirectional torque
Transmission mechanism (6) is unilateral bearing or ratchet structure.
3. a kind of self-regulated manually driven drum brake according to claim 2, it is characterised in that：The unidirectional torque
Transmission mechanism (6) is ratchet structure, and ratchet structure includes ratchet circle (61), ratchet support (62) and spring (63), the end of swing arm (7)
Portion is provided with mounting hole (64), mounting hole (64) side wall installs ratchet support (62) and spring (63), and ratchet circle (61) is placed in installation
It is engaged in hole (64) and with ratchet support (62), ratchet circle (61) is fixedly connected with gear shaft (32).
4. a kind of self-regulated manually driven drum brake according to claim 1,2 or 3, it is characterised in that：The system
The tooth bar (5) above gear (31) on dynamic shoe plate (2) and the tooth bar (5) below gear (31) are in circular arc
Shape, the tooth bar (5) above gear (31) and the tooth bar (5) below gear (31) are respectively internal tooth and external tooth, and interior
Tooth and external tooth pin joint respectively with shoe brake (2) are as the centre of gyration.
5. a kind of self-regulated manually driven drum brake according to claim 1,2 or 3, it is characterised in that：The system
Dynamic device gap limits hole (84) as " one " font hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621244841.8U CN206190772U (en) | 2016-11-21 | 2016-11-21 | Self -modulation manpower drive's drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621244841.8U CN206190772U (en) | 2016-11-21 | 2016-11-21 | Self -modulation manpower drive's drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206190772U true CN206190772U (en) | 2017-05-24 |
Family
ID=58726076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621244841.8U Withdrawn - After Issue CN206190772U (en) | 2016-11-21 | 2016-11-21 | Self -modulation manpower drive's drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206190772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321689B (en) * | 2016-11-21 | 2019-02-12 | 李美取 | A kind of self-regulated manually driven drum brake |
-
2016
- 2016-11-21 CN CN201621244841.8U patent/CN206190772U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321689B (en) * | 2016-11-21 | 2019-02-12 | 李美取 | A kind of self-regulated manually driven drum brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170524 Effective date of abandoning: 20190212 |
|
| AV01 | Patent right actively abandoned |