CN217130176U - Lightweight brake clearance automatic adjustment arm - Google Patents
Lightweight brake clearance automatic adjustment arm Download PDFInfo
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- CN217130176U CN217130176U CN202122409493.2U CN202122409493U CN217130176U CN 217130176 U CN217130176 U CN 217130176U CN 202122409493 U CN202122409493 U CN 202122409493U CN 217130176 U CN217130176 U CN 217130176U
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Abstract
The utility model relates to a stopper spare part field discloses a lightweight braking clearance automatic adjustment arm, it includes the adjusting lever, the one end of first worm section is provided with first pilot hole, the adjusting lever includes shaft section and first linkage segment, be equipped with the pressure spring in the first pilot hole, first linkage segment assembly is in first pilot hole, the pressure spring is contradicted between first pilot hole bottom surface and first linkage segment terminal surface, first linkage segment can be in first pilot hole axial slip, can not take place circumferential direction in first pilot hole; the clearance adjusting mechanism further comprises a second worm wheel, the second worm wheel is assembled on the adjusting rod in a sliding mode, an assembling port is formed in one end, close to the first connecting section, of the second worm wheel, and the second worm wheel can be matched with the first connecting section through the assembling port to achieve synchronous rotation with the adjusting rod; the second worm wheel and the adjusting rod can be separated from the matching of the assembling port and the first connecting section through relative sliding. The adjusting arm has the advantages of low cost, few parts and the like.
Description
Technical Field
The utility model relates to an automobile braking field especially relates to a lightweight braking clearance automatic adjustment arm.
Background
The automobile brake clearance is the clearance between the brake pads and the brake drum when the automobile is not braked. Too large a braking gap can result in too long a reaction time, resulting in potential safety hazards.
The applicant previously applied patent CN 110425238B-an automatic brake clearance adjusting arm for a drum brake, which realizes clearance adjustment through a transmission assembly with two bevel gear structures, but the adjusting arm with such a structure has the following technical problems that firstly, the number of applied parts is large, two sets of bevel gear structures are required, secondly, a return spring, a pressure spring and two sets of end caps are required, and therefore, the structure is complex and the weight is large.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's shortcoming, provide a lightweight braking clearance automatic adjustment arm. In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
a light-weight brake clearance automatic adjusting arm comprises a brake arm and a control arm, wherein a first worm wheel is installed in the brake arm, a control panel gear is fixedly connected to the control arm, the control panel gear and the first worm wheel are coaxially arranged, and a connecting hole for installing a cam shaft is formed in the middle of the first worm wheel;
the gap adjusting mechanism is installed in the brake arm and comprises a first worm section, the first worm section is matched with a first worm wheel, the gap adjusting mechanism further comprises an adjusting rod, one end of the first worm section is provided with a first assembling hole, the adjusting rod comprises a shaft section and a first connecting section, a pressure spring is assembled in the first assembling hole, the first connecting section is assembled in the first assembling hole and abutted between the bottom surface of the first assembling hole and the end surface of the first connecting section, the first connecting section can axially slide in the first assembling hole and cannot circumferentially rotate in the first assembling hole;
the clearance adjusting mechanism further comprises a second worm wheel, the second worm wheel is assembled on the adjusting rod in a sliding mode, an assembling port is formed in one end, close to the first connecting section, of the second worm wheel, and the second worm wheel can be matched with the first connecting section through the assembling port to achieve synchronous rotation with the adjusting rod; the second worm wheel and the adjusting rod can realize that the assembly port is separated from the first connecting section through relative sliding;
the clearance adjusting mechanism also comprises a clutch component arranged in the brake arm, the clutch component comprises a driving gear and a second worm section, and the second worm section is matched with the driving gear through a clutch mechanism; the second worm section cooperates with a second worm gear.
Preferably, the brake arm comprises a first cavity, the first worm section and the second worm wheel are assembled in the first cavity, one end of the first cavity is sealed through an end cover, a sinking groove is formed in the bottom surface of the other end of the first cavity, one end, far away from the second worm wheel, of the first worm section is inserted into the sinking groove, the brake arm further comprises a first bearing and a second bearing, the first bearing is assembled at one end, close to the second worm wheel, of the first worm section, the second bearing is assembled on the shaft section, the second bearing is assembled between the end cover and the second worm wheel, and the end portion of the shaft section penetrates through the end cover and extends out of the outer side of the brake arm.
Preferably, the cross section of the first connecting section is a regular polygon, the outer diameter of the first connecting end is larger than that of the shaft section, the middle of the second worm wheel penetrates through the insertion hole, the inner diameter of the assembling port is larger than that of the insertion hole, and the second worm wheel is in clearance fit with the shaft section through the insertion hole.
Preferably, the cross section of the first connecting section is a regular hexagon, and the assembly opening is a dodecagonal groove formed by a single hexagon or double hexagons.
Preferably, the shaft section comprises a second connecting section at the end part and a matching section for connecting the first connecting section and the second connecting section, and the second worm gear is assembled on the matching section.
Preferably, the second connecting section projects outside the end cap, and the mating section is fitted with a sealing ring.
Preferably, the driving gear is including extending the adapter sleeve in gear portion one side, the downthehole arc connecting block that is provided with of adapter sleeve, the arc connecting block distributes along the circumferencial direction, form transmission clearance between the arc connecting block, be provided with the initiative drive ring between second worm section and the driving gear, the one end of initiative drive ring is provided with the spread groove, the arc connecting block assembly is in the spread groove, the arc connecting block can idle certain angle in the spread groove, the other end of initiative drive ring is provided with first ratchet, the one end that the second worm section is close to the initiative drive ring is provided with the second ratchet, when the driving gear forward rotation, the cooperation of accessible first ratchet and second ratchet drives the rotation of second worm section, when the driving gear antiport, first ratchet breaks away from the cooperation with the second ratchet, driving gear and second worm section do not take place the motion transmission.
Preferably, the brake device further comprises a second chamber, the second worm section and the driving gear are arranged in the second chamber, the brake device further comprises a supporting shaft, the driving gear, the second worm section and the driving transmission ring are all assembled on the supporting shaft, one end of the supporting shaft is limited with the brake arm through the driving gear, and the other end of the supporting shaft is limited through an assembling spring seat, the brake arm and the bottom surface of the second chamber; the second worm section comprises a second worm rod part and a driven transmission ring, the second ratchet is arranged on the driven transmission ring, the driven transmission ring is sleeved on the supporting shaft, the driven transmission ring and the second worm rod part are in spline fit, one end, close to the driving gear, of the second worm part is matched with the driven transmission ring, and one end, far away from the driving gear, of the second worm is sleeved on the supporting shaft.
Through the technical scheme, the utility model discloses following technological effect has:
the bevel gear transmission required by original parts is cancelled in the design, and parts such as a spring, a spring seat and an end cover are not needed on one side far away from the end cover, so that the cost is saved, and the product quality is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the device.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a cross-sectional view of fig. 2.
Fig. 4 is a top view of fig. 1.
Fig. 5 is a cross-sectional view of fig. 4.
Fig. 6 is an exploded view of fig. 1.
Fig. 7 is a schematic view of a clutch device.
FIG. 8 is a schematic view of an adjustment rod.
Fig. 9 is a schematic view of a second worm gear.
Fig. 10 is a structural schematic view of the ratchet.
The names of the parts indicated by the numerical references in the drawings are as follows: 1-brake arm, 2-control arm, 3-first worm gear, 4-control disc gear, 5-first worm section, 6-adjusting rod, 7-shaft section, 8-first connecting section, 9-first assembly hole, 10-pressure spring, 11-second worm gear, 12-assembly opening, 14-clutch component, 15-driving gear, 16-second worm section, 17-first chamber, 18-end cover, 19-sink groove, 20-plug shaft, 21-first bearing, 22-second bearing, 23-plug hole, 24-connecting sleeve, 25-connecting block, 26-connecting groove, 27-first ratchet, 28-second ratchet, 29-driving transmission ring, 30-driven transmission ring, 31-second worm rod section, 32-supporting shaft, 33-connecting hole, 34-spring seat, 35-sealing ring, 36-second connecting section, 37-matching section.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A lightweight brake clearance automatic adjusting arm comprises a brake arm 1 and a control arm 2, wherein a first worm wheel 3 is installed in the brake arm 1, a control panel gear 4 is fixedly connected to the control arm 2, the control panel gear 4 and the first worm wheel 3 are coaxially arranged, and a connecting hole 33 for installing a cam shaft is formed in the middle of the first worm wheel 3;
a gap adjusting mechanism is installed in the brake arm 1, the gap adjusting mechanism comprises a first worm section 5, the first worm section 5 is matched with a first worm wheel 3, the gap adjusting mechanism further comprises an adjusting rod 6, a first assembling hole 9 is formed in one end of the first worm section 5, the adjusting rod 6 comprises a shaft section 7 and a first connecting section 8, a pressure spring 10 is assembled in the first assembling hole 9, the first connecting section 8 is assembled in the first assembling hole 9, the pressure spring 10 is abutted between the bottom surface of the first assembling hole 9 and the end surface of the first connecting section 8, the first connecting section 8 can axially slide in the first assembling hole 9, and can not circumferentially rotate in the first assembling hole 9; first worm section 5 and adjusting lever 6 are the coaxial line setting in this embodiment, and first pilot hole 9 and first linkage segment 8 are clearance fit, and first pilot hole 9 is the non-circular hole, and the shape adaptation of the shape of first pilot hole 9 and first linkage segment 8 is regular hexagon in this embodiment, so adjusting lever 6 can drive first worm section 5 and rotate when carrying out clearance adjustment.
The clearance adjusting mechanism further comprises a second worm wheel 11, the second worm wheel 11 is assembled on the adjusting rod 6 in a sliding mode, an assembling port 12 is formed in one end, close to the first connecting section 8, of the second worm wheel 11, and the second worm wheel 11 can be matched with the first connecting section 8 through the assembling port 12 to achieve synchronous rotation with the adjusting rod 6; the second worm wheel 11 and the adjusting rod 6 can realize that the assembling opening 12 is separated from the first connecting section 8 through relative sliding; the second worm wheel 11 and the adjusting rod 6 are in a sliding fit structure, wherein the second worm wheel 11 is limited by a bearing, and the adjusting rod 6 can slide relative to the second worm wheel 11.
The clearance adjusting mechanism further comprises a clutch part 14 arranged in the brake arm, the clutch part 14 comprises a driving gear 15 and a second worm section 16, and the second worm section 16 is matched with the driving gear 15 through a clutch mechanism; the second worm section 16 cooperates with the second worm wheel 11. The clutch member 14 serves to prevent the backlash from occurring after the backlash is adjusted.
In this embodiment, the brake arm 1 includes a first chamber 17, the first worm section 5 and the second worm wheel 11 are assembled in the first chamber 17, one end of the first chamber 17 is sealed by an end cover 18, a sinking groove 19 is formed on the bottom surface of the other end, one end of the first worm section 5, which is far away from the second worm wheel 11, is inserted into the sinking groove 19, and the brake arm further includes a first bearing 21 and a second bearing 22, the first bearing 21 is assembled at one end of the first worm section 5, which is close to the second worm wheel 11, the second bearing 22 is assembled on the shaft section 7, the second bearing 22 is assembled between the end cover 18 and the second worm wheel 11, and the end of the shaft section 7 penetrates through the end cover 18 and extends out of the brake arm 1. The axis of the first cavity 17 is perpendicular to the axis of the first worm wheel 3, a blind hole is formed in one end of the first cavity 17 through the braking arm 1, the sinking groove 19 is formed in the bottom of the first cavity 17, the end of the first worm section 5 is provided with an inserting shaft 20 matched with the sinking groove 19 in the embodiment, the sinking groove 19 and the inserting shaft 20 are in clearance fit, the cross section of the inserting shaft 20 is circular, and the inserting shaft 20 can rotate in the sinking groove 19.
The end cover 18, the second bearing 22, the second worm wheel 11, the first bearing 21 and the first worm section 5 are sequentially assembled in the first cavity 17, no gap exists between each part, and the adjusting rod 6 and the second worm wheel 11 are separated from transmission to realize the gap adjustment, so that the adjustment is very convenient, and the transmission is more stable and reliable.
In this embodiment, the cross section of the first connecting section 8 is a regular polygon, the outer diameter of the first connecting end is larger than the outer diameter of the shaft section 7, the middle part of the second worm wheel 11 is provided with the insertion hole 23 in a penetrating manner, the inner diameter of the assembling port 12 is larger than the inner diameter of the insertion hole 23, and the second worm wheel 11 is in clearance fit with the shaft section 7 through the insertion hole 23.
In this embodiment, the cross section of the first connecting section 8 is a regular hexagon, and the assembling opening 12 is a twelve-angle groove formed by a single hexagon or a double hexagon. The stroke angle of the first worm section 5 per minimum adjustment is 30 degrees when automatic adjustment is required. The adjustment process is convenient to calculate, and the matching is stable and reliable.
In this embodiment, the shaft section 7 includes a second connecting section 36 at the end and a fitting section 37 connecting the first connecting section 8 and the second connecting section 36, and the second worm wheel 11 is fitted on the fitting section 37.
To allow manual adjustment, the second connecting section 36 projects outside the end cap 18, and the mating section 37 is fitted with a sealing ring 35.
In this embodiment, the driving gear 15 includes a connecting sleeve 24 extending at one side of the gear portion, an arc connecting block 25 is disposed in a hole of the connecting sleeve 24, the arc connecting blocks 25 are distributed along a circumferential direction, a transmission gap is formed between the arc connecting blocks 25, a driving transmission ring 29 is disposed between the second worm section 16 and the driving gear 15, a connecting groove 26 is disposed at one end of the driving transmission ring 29, the arc connecting blocks 25 are assembled in the connecting groove 26, the arc connecting blocks 25 can rotate within the connecting groove 26 by a certain angle, a first ratchet 27 is disposed at the other end of the driving transmission ring 29, a second ratchet 28 is disposed at one end of the second worm section 16 close to the driving transmission ring 29, when the driving gear 15 rotates in a forward direction, the second worm section 16 can be driven to rotate by the cooperation of the first ratchet 27 and the second ratchet 28, when the driving gear 15 rotates in a reverse direction, the first ratchet 27 and the second ratchet 28 are disengaged, the drive gear 15 and the second worm section 16 are not motion-transmitting.
The brake arm 1 further comprises a second cavity, the second worm section 16 and the driving gear 15 are arranged in the second cavity, the brake arm further comprises a supporting shaft 32, the driving gear 15, the second worm section 16 and the driving transmission ring 29 are all assembled on the supporting shaft 32, one end of the supporting shaft 32 is limited with the brake arm 1 through the driving gear 15, and the other end of the supporting shaft is limited with the brake arm 1 and the bottom surface of the second cavity through an assembling spring seat 34; spring 341 is equipped with in the spring holder 34 and predetermines spring 341, predetermine spring 341's one end and contradict in spring holder 34, second worm section 16 includes second worm part 31, driven transmission ring 30, second ratchet 28 is established on driven transmission ring 30, driven transmission ring 30 cover is established on back shaft 32, driven transmission ring 30 and second worm part 31 are the spline fit, the one end that second worm part 31 is close to driving gear 15 cooperates with driven transmission ring 30, the pot head that driving gear 15 was kept away from to the second worm is established on back shaft 32. Wherein a torsion spring is arranged between the driving gear 15 and the driving transmission ring 29.
The working process of the scheme is as follows:
when the device is installed, the control arm 2 is installed on an automobile axle, the first worm wheel 3 is connected with the camshaft through the connecting hole 33 and synchronously rotates, and the axle bracket of the control arm 2 is connected; the brake arm 1 is provided with a bush and is connected with an air chamber shifting fork through the bush.
When braking is carried out, the brake arm 1 rotates, and due to the self-locking function of the worm gear, the first worm wheel 3 synchronously rotates along with the brake arm 1 and drives the cam shaft to rotate so as to push the friction plate to move towards the brake drum.
Because control arm 2 and axle lug connection, control arm 2 and control panel gear 4 rotate for brake arm 1 synchronous this moment, driving gear 15 rotates under control panel gear 4's drive, driving gear 15 drives initiative drive ring 29 when rotating the clearance angle between spread groove 26 and the connecting block 25 and rotates, initiative drive ring 29 and passive drive ring 30 break away from the meshing, second worm section 16 does not rotate, second worm wheel 11 and first worm section 5 do not rotate, excessive clearance can not bounce-back.
When the brake is released, the brake arm 1 and the control disc gear 4 rotate reversely, the ratchets of the driving transmission ring 29 and the driven transmission ring 30 are meshed to drive the second worm section 16 to rotate, the second worm section 16 drives the second worm wheel 11 to rotate, the second worm wheel 11 and the first connecting section 8 of the adjusting rod 6 are in a matching state, then the adjusting rod 6 drives the first worm section 5 to rotate, and the first worm section 5 drives the first worm wheel 3 to perform brake clearance adjustment. When the clearance needs to be manually adjusted, the adjusting rod 6 is pressed down, the adjusting rod 6 moves axially, the pressure spring 10 is compressed, the first connecting section 8 and the assembling opening 12 are separated from each other, and then the adjusting rod 6 is rotated to drive the first worm section 5 to rotate so as to drive the first worm wheel 3 to rotate to adjust the clearance.
The second connecting section 36 in this embodiment has a rectangular or hexagonal cross-section for easy handling.
The bevel gear transmission required by original parts is eliminated, and parts such as a spring, a spring seat and an end cover 18 are not needed on one side far away from the end cover 18, so that the cost is saved, and the product quality is reduced.
Example 2
The assembly opening 12 is a 36-degree groove in the present embodiment, so the minimum adjustment angle of the first worm section 5 is 10 degrees each time.
Example 3
This embodiment is different from embodiment 1 in that: each ratchet tooth of the first ratchet teeth 27 comprises a first side surface 271 and a second side surface 272, the included angle between the first side surface 271 and the second side surface 272 is 60-80 degrees, the deviation angle of the second side surface 272 deviating from the vertical axis is 2-3 degrees, and the first side surface 271 and the second side surface 272 are located on the same side of the vertical axis. The angle not only can facilitate the separation of the ratchets from the matching, but also can ensure the stable transmission during transmission without slipping.
Claims (9)
1. A lightweight brake clearance automatic adjusting arm comprises a brake arm (1) and a control arm (2), wherein a first worm gear (3) is installed in the brake arm (1), a control panel gear (4) is fixedly connected to the control arm (2), the control panel gear (4) and the first worm gear (3) are coaxially arranged, and a connecting hole (33) for installing a cam shaft is formed in the middle of the first worm gear (3);
the method is characterized in that: install clearance adjustment mechanism in brake arm (1), clearance adjustment mechanism includes first worm section (5), first worm section (5) and first worm wheel (3) cooperation, still include adjusting lever (6), the one end of first worm section (5) is provided with first pilot hole (9), adjusting lever (6) include shaft segment (7) and first linkage segment (8), be equipped with pressure spring (10) in first pilot hole (9), first linkage segment (8) are assembled in first pilot hole (9), pressure spring (10) are contradicted between first pilot hole (9) bottom surface and first linkage segment (8) terminal surface, first linkage segment (8) can be in first pilot hole (9) axial slip, circumferential direction can not take place in first pilot hole (9);
the clearance adjusting mechanism further comprises a second worm wheel (11), the second worm wheel (11) is assembled on the adjusting rod (6) in a sliding mode, an assembling port (12) is formed in one end, close to the first connecting section (8), of the second worm wheel (11), and the second worm wheel (11) can be matched with the first connecting section (8) through the assembling port (12) to achieve synchronous rotation with the adjusting rod (6); the second worm wheel (11) and the adjusting rod (6) can realize that the assembling port (12) is separated from the first connecting section (8) through relative sliding;
the clearance adjusting mechanism further comprises a clutch part (14) arranged in the brake arm (1), the clutch part (14) comprises a driving gear (15) and a second worm section (16), and the second worm section (16) is matched with the driving gear (15) through a clutch mechanism; the second worm section (16) cooperates with the second worm wheel (11).
2. The arm for automatically adjusting a brake clearance in a lightweight construction according to claim 1, wherein: the brake arm (1) comprises a first cavity (17), a first worm section (5) and a second worm wheel (11) are assembled in the first cavity (17), one end of the first cavity (17) is sealed through an end cover (18), a sinking groove (19) is formed in the bottom surface of the other end of the first cavity, one end, far away from the second worm wheel (11), of the first worm section (5) is inserted into the sinking groove (19), the brake arm further comprises a first bearing (21) and a second bearing (22), the first bearing (21) is assembled at one end, close to the second worm wheel (11), of the first worm section (5), the second bearing (22) is assembled on a shaft section (7), the second bearing (22) is assembled between the end cover (18) and the second worm wheel (11), and the end of the shaft section (7) penetrates through the end cover (18) and extends out of the brake arm (1).
3. The arm for automatically adjusting a brake clearance in a lightweight construction according to claim 1, wherein: the cross section of the first connecting section (8) is a regular polygon, the outer diameter of the first connecting end is larger than that of the shaft section (7), the middle of the second worm wheel (11) is provided with an insertion hole (23) in a penetrating mode, the inner diameter of the assembling port (12) is larger than that of the insertion hole (23), and the second worm wheel (11) is in clearance fit with the shaft section (7) through the insertion hole (23).
4. The arm for automatically adjusting a brake clearance in a lightweight construction according to claim 3, wherein: the section of the first connecting section (8) is a regular hexagon, and the assembly opening (12) is a single-hexagon or double-hexagon formed dodecagonal groove.
5. The arm for automatically adjusting a brake clearance in a lightweight construction according to claim 2, wherein: the shaft section (7) comprises a second connecting section (36) at the end part and a matching section (37) connected with the first connecting section (8) and the second connecting section (36), and the second worm wheel (11) is assembled on the matching section (37).
6. The arm for automatically adjusting a brake clearance in a lightweight construction according to claim 5, wherein: the second connecting section (36) extends outside the end cap (18), and the mating section (37) is provided with a sealing ring (35).
7. The arm for automatically adjusting a brake clearance in a lightweight construction according to claim 1, wherein: the driving gear (15) comprises a connecting sleeve (24) extending on one side of the gear portion, an arc-shaped connecting block (25) is arranged in a hole of the connecting sleeve (24), the arc-shaped connecting block (25) is distributed along the circumferential direction, a transmission gap is formed between the arc-shaped connecting blocks (25), a driving transmission ring (29) is arranged between the second worm section (16) and the driving gear (15), a connecting groove (26) is arranged at one end of the driving transmission ring (29), the arc-shaped connecting block (25) is assembled in the connecting groove (26), the arc-shaped connecting block (25) can rotate within a certain angle in the connecting groove (26), a first ratchet (27) is arranged at the other end of the driving transmission ring (29), a second ratchet (28) is arranged at one end, close to the driving transmission ring (29), of the second worm section (16), and when the driving gear (15) rotates forwards, the second worm section (16) can be driven to rotate by the cooperation of the first ratchet (27) and the second ratchet (28), when the driving gear (15) rotates reversely, the first ratchet (27) and the second ratchet (28) are disengaged, and the driving gear (15) and the second worm section (16) do not transmit motion.
8. The arm for automatically adjusting a brake clearance in a lightweight construction according to claim 1, wherein: the brake device also comprises a second cavity, wherein the second worm section (16) and the driving gear (15) are arranged in the second cavity, the brake device also comprises a supporting shaft (32), the driving gear (15), the second worm section (16) and the driving transmission ring (29) are all assembled on the supporting shaft (32), one end of the supporting shaft (32) is limited with the brake arm (1) through the driving gear (15), and the other end of the supporting shaft is limited through the arrangement of an assembling spring seat (34), the brake arm (1) and the bottom surface of the second cavity; spring (341) are predetermine to being equipped with in spring holder (34), predetermine the one end conflict of spring (341) in spring holder (34), the other end conflicts on brake arm (1), second worm section (16) include second worm part (31), passive transmission ring (30), second ratchet (28) are established on passive transmission ring (30), passive transmission ring (30) cover is established on back shaft (32), passive transmission ring (30) are spline fit with second worm part (31), one end and passive transmission ring (30) cooperation that second worm part (31) are close to driving gear (15), the pot head that the second worm kept away from driving gear (15) is established on back shaft (32).
9. The automatic adjustment arm for a brake clearance in a lightweight construction according to claim 8, wherein: each ratchet of the first ratchet teeth (27) comprises a first side surface (271) and a second side surface (272), the included angle between the first side surface (271) and the second side surface (272) ranges from 60 degrees to 80 degrees, the deflection angle of the second side surface (272) deviating from the vertical axis ranges from 2 degrees to 3 degrees, and the first side surface (271) and the second side surface (272) are located on the same side of the vertical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409493.2U CN217130176U (en) | 2021-09-30 | 2021-09-30 | Lightweight brake clearance automatic adjustment arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122409493.2U CN217130176U (en) | 2021-09-30 | 2021-09-30 | Lightweight brake clearance automatic adjustment arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217130176U true CN217130176U (en) | 2022-08-05 |
Family
ID=82615261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122409493.2U Active CN217130176U (en) | 2021-09-30 | 2021-09-30 | Lightweight brake clearance automatic adjustment arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217130176U (en) |
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2021
- 2021-09-30 CN CN202122409493.2U patent/CN217130176U/en active Active
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