CN212804006U - Brake structure for electric vehicle - Google Patents
Brake structure for electric vehicle Download PDFInfo
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- CN212804006U CN212804006U CN202021530477.8U CN202021530477U CN212804006U CN 212804006 U CN212804006 U CN 212804006U CN 202021530477 U CN202021530477 U CN 202021530477U CN 212804006 U CN212804006 U CN 212804006U
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Abstract
The utility model discloses a brake structure for an electric vehicle, which comprises a brake drum, wherein a mounting disc is arranged in the brake drum, and the mounting disc and the brake drum are arranged integrally; the brake drum is used for being in power connection with a driving wheel of an electric vehicle through a mounting disc, two brake shoes are arranged in the brake drum, wheel cylinders used for pushing the upper ends of the brake shoes are arranged in the brake drum, brake pads used for pushing the brake pads to be in contact with the inner wall of the brake drum through the brake shoes are arranged on two sides of the wheel cylinders, piston rods are connected with the brake shoes, and scraping devices are arranged on the piston rods and used for pushing the scraping devices to be in contact with the inner wall of the brake drum through the piston rods, so that the existing drum type brake structure is expected to be optimized, and the problem that the brake performance of the brake drum is influenced by scraps generated by abrasion of the brake pads sometimes.
Description
Technical Field
The utility model relates to an electric motor car safety braking, concretely relates to be used for electric motor car brake structure.
Background
The disc brake is usually exposed in the air, and for electric vehicles, particularly electric three-wheeled vehicles, the disc brake needs to increase the brake stability, inevitably needs to enlarge the diameter of a brake disc, and needs to increase the oil pressure, so that the disc brake has large friction loss and small friction action surface, is only suitable for two-wheeled electric vehicles, and is generally preferred to be drum brake if the electric three-wheeled vehicles are used for containing goods.
The drum brake mainly makes the brake drum and the wheel shaft rotate synchronously, under the working condition that the brake is needed, the wheel cylinder piston generates pressure to the brake shoe to press the brake drum, and the kinetic energy of the wheel shaft is reduced through the friction between the friction plate and the brake drum, so that the vehicle speed is finally reduced, and the wheel stops rotating. Adopt the brake drum to have two defects, the piece that its brake block wearing and tearing back produced often can cover on the brake drum to influence the brake performance of brake drum, secondly the heat decay of brake drum is relatively poor, and the braking in-process produces the heat and need give off as far as, if give off the effect relatively poor, in long-term use, can gradually influence brake performance. Therefore, how to optimize the braking structure of the electric vehicle is worth studying.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be used for electric motor car brake structure to expect to optimize current drum brake structure, improve the electric motor car at the in-process of traveling, the piece that the brake block wearing and tearing produced can influence the problem of the brake performance of brake drum sometimes.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a brake structure for an electric vehicle brake comprises a brake drum, wherein a mounting disc is arranged in the brake drum, and the mounting disc and the brake drum are integrally arranged; the brake drum is provided with two brake shoes, the brake drum is internally provided with a wheel cylinder for pushing the upper ends of the brake shoes, the brake shoes are provided with brake pads for pushing the brake pads to contact the inner wall of the brake drum by the brake shoes, piston rods are arranged on two sides of the wheel cylinder and connected with the brake shoes, and the piston rods are provided with scraping devices for pushing the scraping devices to contact the inner wall of the brake drum by the piston rods.
Preferably, the scraping device comprises a frame body, the frame body is locked on the piston rod, a rotating shaft is arranged on the frame body, a shifting piece is arranged on the rotating shaft, the shifting piece gradually inclines along the rotating direction of the brake drum, a reset framework is arranged on the frame body, and the reset mechanism abuts against the shifting piece and is used for contacting the inner wall of the brake drum through the shifting piece.
A further technical scheme is that the reset framework comprises a sleeve, a telescopic rod is arranged in the sleeve, a connecting plate is arranged at the front end of the telescopic rod and connected with a shifting piece, a reset spring is sleeved on the telescopic rod and abuts against the sleeve and the connecting plate respectively.
According to a further technical scheme, a scraper is arranged at the top end of the poking sheet, a scraping groove is formed in the scraper, and the caliber of the scraping groove is gradually inclined from the inside to the outside of the brake drum.
Preferably, the lower ends of the brake shoes are provided with adjusting supports for adjusting the distance between the lower ends of the two brake shoes by the adjusting supports.
Preferably, the mounting plate is provided with a plurality of mounting holes, and the mounting plate is further provided with an arc-shaped groove for improving the air flow in the brake drum through the arc-shaped groove.
Preferably, the brake drum is provided with a heat conducting layer on the outer wall, and an airflow groove is formed on the surface of the heat conducting layer.
Compared with the prior art, the beneficial effects of the utility model are one of following at least:
the utility model discloses a piston rod through the wheel cylinder promotes brake shoe and doctor-bar device, promotes brake block contact brake drum by the brake shoe, realizes the effect of speed reduction brake, clears up the adnexed piece of brake drum inner wall temporarily through the doctor-bar device, avoids the inside adnexed piece contact brake block that goes up of brake drum, has effectively reduced the influence of the brake block piece to the brake performance of brake drum among the driving process.
The utility model discloses a frame body makes doctor-bar device and piston rod synchronous motion, makes the plectrum can rotate through the pivot, rotates so that not interrupted after contacting the brake drum through the plectrum, guarantees through the framework that resets that the plectrum has the reaction force that removes, is convenient for clear up the piece that adheres to on the brake drum inside; the utility model discloses sleeve installation telescopic link guarantees through the connecting plate that the thrust that reset spring applyed can stable action in the plectrum.
The utility model discloses a scraper contact brake drum inner wall, its groove of scraping is scraped the piece of getting to the scraper and is carried out the drainage. And the gap between the brake shoes is adjusted by adjusting the support so as to be matched with a wheel cylinder to adjust the braking strength.
The utility model discloses a brake drum is fixed to the mounting hole, is guaranteeing through the arc wall under the brake drum relatively sealed environment, the gas circulation of also being convenient for to improve the heat dispersion of brake drum.
The brake drum is heated by the heat conduction layer, heat dissipation is facilitated, and heat dissipation efficiency of the heat conduction layer is improved through the airflow grooves.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the doctor blade apparatus of fig. 1.
Fig. 3 is a schematic diagram of the structure of the reset architecture of the present invention.
Fig. 4 is a schematic view of the structure of the scraping groove of the present invention.
Fig. 5 is a schematic view of the heat-conducting layer structure of the present invention.
Description of reference numerals:
1-brake drum, 2-mounting disc, 3-brake shoe, 4-wheel cylinder, 5-brake block, 6-doctor blade device, 7-reset framework, 8-adjusting support, 101-heat conducting layer, 102-airflow groove, 201-mounting hole, 202-arc groove, 401-piston rod, 601-frame body, 602-rotating shaft, 603-plectrum, 604-doctor blade, 605-doctor blade, 701-sleeve, 702-telescopic rod, 703-connecting plate and 704-reset spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, an embodiment of the present invention is a brake structure for an electric vehicle, including a brake drum 1, wherein a mounting plate 2 is disposed in the brake drum 1, and the mounting plate 2 and the brake drum 1 are integrally disposed; the brake drum 1 is a friction coupling part of an existing drum brake, the inner wall of the brake drum 1 needs to have a stable friction coefficient as much as possible, and the brake drum 1 generally has wear resistance, heat dissipation and good heat capacity in consideration of heat energy generated by friction. The material of the brake drum 1 is integrally cast by high-strength gray cast iron or alloy cast iron containing Cr. The brake drum 1 is drum-shaped, and the mounting disc 2 is used for mounting the brake drum 1 and is in power connection with a driving wheel of the electric vehicle through the mounting disc 2.
The brake drum 1 is provided with two brake shoes 3, wherein the brake shoes 3 are friction coupling parts matched with the brake drum 1, and mainly bear the thrust force during braking, and the normal force and the tangential force of the brake drum 1 through the brake shoes 1. The brake drum 1 is provided with a wheel cylinder 4 for pushing the upper end of the brake shoe 3, the brake shoe 3 is provided with a brake pad 5, wherein the brake pad 5 is an existing friction lining and is used for pushing the brake pad 5 to contact the inner wall of the brake drum 1 by the brake shoe 3, the number of the brake shoes 3 is generally two, the brake shoes are respectively called a leading shoe and a trailing shoe according to whether the rotating direction of the brake shoe 3 when the brake shoe 3 is opened is consistent with the rotating direction of the brake drum 1, the wheel cylinder 4 is an existing double-piston brake wheel cylinder, piston rods 401 are arranged on two sides of the wheel cylinder 4, the piston rods 401 are connected with the pistons of the wheel cylinders 4, the piston rods 401 are connected with the brake shoes 3, the piston rods 401 act on the piston rods 4, the brake shoes 3 are pushed by the piston rods 401, the brake shoes 3 drive the brake pad 5 to work, and the brake.
The piston rod 401 is provided with the scraper device 6, the scraper device 6 is pushed by the piston rod 401 to contact the inner wall of the brake drum 1, the piston rod 401 is used for pushing the scraper device 6 synchronously, the scraper device 6 contacts the inner wall of the brake drum 1, and the scraps on the inner wall of the brake drum 1 are cleaned to a certain degree, so that the risk that the scraps may influence the braking performance of the brake drum when the brake block 5 of the electric vehicle accidentally generates the scraps in the driving process is effectively reduced. It should be noted that if a noticeable noise is heard during driving, the user should perform a certain degree of cleaning and maintenance to avoid excessive debris exceeding the cleaning capacity of the blade arrangement 6.
Based on the above embodiment, referring to fig. 2, another embodiment of the present invention is that the doctor blade device 6 includes a frame body 601, the frame body 601 is locked on the piston rod 401, the frame body 601 is provided with a rotating shaft 602, the rotating shaft 602 is provided with a shifting plate 603, the shifting plate 603 gradually tilts along the rotating direction of the brake drum 1, the frame body 601 is provided with a reset framework 7, and the reset framework 7 interferes with the shifting plate 603 for contacting the inner wall of the brake drum 1 through the shifting plate 603.
Wherein the frame body 601 is locked on the piston rod 401 through welding or an anchor ear, so that the frame body moves along with the piston rod 401, wherein the rotating shaft 602 on the piston rod 401 can be an existing damping rotating shaft, and the stroke of the rotating shaft 602 needs to ensure that the included angle between the shifting piece 603 and the frame body 601 does not exceed 90 degrees.
The shifting piece 603 is an existing metal plate, wherein the shifting piece 603 extends to one side of the inner wall of the brake drum 1, so that when the piston rod 401 pushes the brake shoe 3, the shifting piece 603 can be drawn close to the inner wall of the brake drum 1.
The reset mechanism 7 supports the shifting piece 603, and as the piston rod 401 drives the shifting piece 603 to gradually pressurize the inner wall of the brake drum 1, the shifting piece 603 gradually tilts backwards, and is supported by the reset mechanism 7, so that the reset mechanism 7 pushes the shifting piece 603 to reset in a non-braking state.
Further, referring to fig. 3, the above-mentioned reset mechanism 7 includes a sleeve 701, wherein the sleeve 701 is fixed on the frame body 601, the above-mentioned sleeve 701 is provided with a telescopic rod 702 therein, wherein the telescopic rod 702 is installed in the sleeve 701, wherein the sleeve 701 is hollow, and an outer diameter of the telescopic rod 702 is matched with an inner diameter of the sleeve 701, so that the telescopic rod 702 can be conveniently extended and retracted in the sleeve 701.
The front end of the telescopic rod 702 is provided with a connecting plate 703, the connecting plate 703 is connected with a shifting piece 603, the shifting piece 603 is contacted with the connecting plate 703 so that the reset framework 7 can apply pressure to the shifting piece 603, the telescopic rod 702 is sleeved with a reset spring 704, and the reset spring 704 respectively pushes against the sleeve 701 and the connecting plate 703.
When the shifting piece 603 is pressed to lean back, the connecting plate 703 pushes the telescopic rod 702 to be folded into the sleeve 701, and the return spring 704 is in a compressed state and exerts a reaction force on the connecting plate 703 to press the shifting piece 603 through the reaction force.
Further, referring to fig. 4, the top end of the above-mentioned pick-up 603 is provided with a scraper 604, wherein the scraper is a metal sheet, and the scraper 604 directly contacts the inner wall of the brake drum 1, and after the scraper 604 contacts, the scraper scrapes off the debris on the inner wall of the brake drum 1.
The doctor blade 604 is provided with a doctor groove 605, and the diameter of the doctor groove 605 is gradually inclined from the inside to the outside of the brake drum 1. The scraps are guided to one end of the brake drum 1 through the scraping groove 605, so that the influence of the scraps on the stable contact between the brake drum 1 and the brake pad 5 is avoided.
Based on the above embodiment, another embodiment of the present invention is that the lower end of the brake shoe 3 is provided with an adjusting support 8 for adjusting the distance between the lower ends of the two brake shoes 3 by the adjusting support 8
The adjusting support 8 is an existing commodity, the distance between the lower ends of the two brake shoes 3 of the brake shoes 3 is adjusted through the adjusting support 8, and the gap between the brake shoes 3 and the inner wall of the brake drum 1 is improved, so that the friction force on the brake drum 1 can be obviously increased during braking.
Based on the above embodiment, referring to fig. 1 again, another embodiment of the present invention is that a plurality of mounting holes 201 are provided on the mounting plate 2, and the mounting plate 2 is further provided with an arc-shaped groove 202 for improving the air flow in the brake drum 1 through the arc-shaped groove 202, so as to promote the heat dissipation inside the brake drum 1 as much as possible.
Based on the above-mentioned embodiment, refer to fig. 5, another embodiment of the utility model is, above-mentioned brake drum 1 outer wall is equipped with heat-conducting layer 101, above-mentioned heat-conducting layer 101 is equipped with air current groove 102 on the surface, wherein heat-conducting layer 101 adopts current heat-conducting alloy material, through air current groove 102, be convenient for external air current and heat-conducting layer 101 contact, improve the radiating effect of heat-conducting layer 101, in braking process, through take place violent friction production heat each other between brake drum 1 internal surface and brake block 5 surface, consume the kinetic energy of vehicle travel in-process, thereby reach the purpose that makes the vehicle slow down or stop, and reduced the damage of heat to brake block 5 and brake drum 1.
Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (7)
1. A brake structure for an electric vehicle brake comprises a brake drum (1), wherein a mounting disc (2) is arranged in the brake drum (1), and the mounting disc (2) and the brake drum (1) are integrally arranged; the utility model provides a be used for by mounting disc (2) and electric motor car drive wheel power connection, its characterized in that: be equipped with two brake shoes (3) in brake drum (1), be equipped with wheel cylinder (4) that are used for promoting brake shoe (3) upper end in brake drum (1), brake shoe (3) are equipped with brake block (5) for promote brake block (5) contact brake drum (1) inner wall by brake shoe (3), wheel cylinder (4) both sides have piston rod (401), brake shoe (3) are connected in piston rod (401), install doctor-bar device (6) on piston rod (401) for promote doctor-bar device (6) contact brake drum (1) inner wall by piston rod (401).
2. The brake actuating structure for electric vehicles according to claim 1, wherein: doctor-bar device (6) are including support body (601), support body (601) lock is on piston rod (401), be equipped with pivot (602) on support body (601), be equipped with plectrum (603) on pivot (602), plectrum (603) incline gradually along the direction of rotation of brake drum (1), be equipped with on support body (601) and reset framework (7), framework (7) conflict plectrum (603) reset for contact brake drum (1) inner wall by plectrum (603).
3. The brake actuating structure for electric vehicles according to claim 2, wherein: the reset framework (7) comprises a sleeve (701), a telescopic rod (702) is arranged in the sleeve (701), a connecting plate (703) is arranged at the front end of the telescopic rod (702), the connecting plate (703) is connected with a shifting sheet (603), a reset spring (704) is sleeved on the telescopic rod (702), and the reset spring (704) respectively abuts against the sleeve (701) and the connecting plate (703).
4. The brake actuating structure for electric vehicles according to claim 3, wherein: the top end of the poking sheet (603) is provided with a scraper (604), the scraper (604) is provided with a scraping groove (605), and the caliber of the scraping groove (605) is gradually inclined from the inside to the outside of the brake drum (1).
5. The brake actuating structure for electric vehicles according to claim 1, wherein: and the lower ends of the brake shoes (3) are provided with adjusting supports (8) for adjusting the spacing distance between the lower ends of the two brake shoes (3) by the adjusting supports (8).
6. The brake actuating structure for electric vehicles according to claim 1, wherein: the brake drum is characterized in that a plurality of mounting holes (201) are formed in the mounting disc (2), and an arc-shaped groove (202) is formed in the mounting disc (2) and used for improving air flow in the brake drum (1) through the arc-shaped groove (202).
7. The brake actuating structure for electric vehicles according to claim 1, wherein: the brake drum (1) outer wall is equipped with heat-conducting layer (101), be equipped with air current groove (102) on the heat-conducting layer (101) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021530477.8U CN212804006U (en) | 2020-07-29 | 2020-07-29 | Brake structure for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021530477.8U CN212804006U (en) | 2020-07-29 | 2020-07-29 | Brake structure for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212804006U true CN212804006U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021530477.8U Active CN212804006U (en) | 2020-07-29 | 2020-07-29 | Brake structure for electric vehicle |
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| Country | Link |
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| CN (1) | CN212804006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775672A (en) * | 2021-10-08 | 2021-12-10 | 黄山菲英汽车零部件有限公司 | Drum brake capable of dissipating heat quickly |
-
2020
- 2020-07-29 CN CN202021530477.8U patent/CN212804006U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113775672A (en) * | 2021-10-08 | 2021-12-10 | 黄山菲英汽车零部件有限公司 | Drum brake capable of dissipating heat quickly |
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