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CN-224207005-U - Brake, driving device and electric wheelchair

CN224207005UCN 224207005 UCN224207005 UCN 224207005UCN-224207005-U

Abstract

The utility model relates to the technical field of waterproof design of brakes, and discloses a brake, a driving device and an electric wheelchair, wherein the brake comprises a shell, a brake mechanism, a handle and a blocking piece, an operation opening and a blocking part arranged around the operation opening are arranged on the outer side wall of the shell, the brake mechanism is arranged in the shell, one end of the handle is connected with the brake mechanism, the other end of the handle penetrates through the operation opening and extends to the outer side of the shell to form an operation part, the handle can reciprocate relative to the shell along the extending direction of the operation opening, one part of the blocking piece is sleeved on the operation part, and the other part of the blocking piece is sleeved on the outer side of the blocking part and is movably matched with the blocking part. Through protruding the blocking part that is equipped with on the lateral wall of casing, and blocking part winds the periphery side of locating the operation mouth, prevent that foreign matter such as rainwater from flowing into the operation mouth along the lateral wall of casing, prevent that foreign matter such as rainwater from entering into inside stopper and the motor through the operation mouth, guarantee the normal operating of stopper and motor promotes its life.

Inventors

  • WANG CHAO
  • CHEN YANGBIN
  • LIU BOFENG

Assignees

  • 广州雷辰机电技术有限公司
  • 上海邦邦机器人有限公司

Dates

Publication Date
20260508
Application Date
20250331

Claims (10)

  1. 1. A brake (100), characterized by comprising: The device comprises a shell (10), wherein an operation port (11) and a blocking part (12) surrounding the operation port are formed in an outer side wall (14) of the shell (10); A brake mechanism (20), wherein the brake mechanism (20) is arranged in the shell (10); the handle (30), one end of the handle (30) is connected with the brake mechanism (20), the other end of the handle (30) passes through the operation opening (11) and extends to the outer side of the shell (10) to form an operation part (31), and the handle (30) can reciprocate relative to the shell (10) along the extending direction of the operation opening (11); The blocking piece (40), a part of the blocking piece (40) is sleeved on the operation part (31), and the other part of the blocking piece (40) is covered on the outer side of the blocking part (12) and is movably matched with the blocking part (12).
  2. 2. The brake (100) according to claim 1, wherein the blocking member (40) comprises a cover plate (41) and a blocking portion (42) surrounding a periphery of the cover plate (41), the blocking portion (42) extends toward the housing (10), and the blocking portion (42) is covered on an outer side of the blocking portion (12) and is in clearance fit with the blocking portion (12) so that the blocking portion (42) can reciprocate relative to the blocking portion (12) along an extending direction of the operation port (11).
  3. 3. The brake (100) of claim 2, wherein the blocking member (40) further comprises a sleeve (43), the sleeve (43) being connected to the cover plate (41), the sleeve (43) being sleeved on the operating portion (31).
  4. 4. The brake (100) according to claim 2, wherein the blocking portion (12) includes two first blocking plates (121) disposed at opposite intervals along the extending direction of the operation port (11) and two second blocking plates (122) disposed at opposite intervals along the axial direction of the housing (10), the two second blocking plates (122) extending along the extending direction of the operation port (11), the two first blocking plates (121) being located between the two second blocking plates (122) and being connected to each other to form a blocking ring.
  5. 5. The brake (100) according to claim 4, wherein an angle between a tangential direction of an outer peripheral surface of the housing (10) and an extending direction of an outer side surface of the first shutter (121) at an intersection line of the first shutter (121) and the outer peripheral surface of the housing (10) is less than or equal to 90 degrees.
  6. 6. The brake (100) of claim 4, wherein the first baffle (121) includes an arcuate surface (1210), the arcuate surface (1210) being coupled to the outer surface of the housing (10), the arcuate surface (1210) being recessed toward the operating port (11) to form a channel (1211) extending in a direction parallel to the axial direction of the housing (10).
  7. 7. The brake (100) according to claim 6, wherein the blocking portion (42) includes two first partition plates (421) disposed at opposite intervals along the extending direction of the operation port (11) and two second partition plates (422) disposed at opposite intervals along the axial direction of the housing (10), the two first partition plates (421) are disposed between the two second partition plates (422) and are connected to each other to form a blocking ring, a diversion channel (4220) is formed between the second partition plates (422) and the adjacent second partition plates (122), and the diversion channel (4220) is communicated with the diversion groove (1211).
  8. 8. A drive device (200) comprising a brake (100) according to any one of claims 1-7 and a motor (201), said brake (100) being mounted at an end of said motor (201) facing away from a drive end; The handle (30) can drive the brake mechanism (20) to switch between a locking state and an unlocking state along the extending direction of the operation port (11); When the brake mechanism (20) is in a locking state, the brake mechanism (20) is locked with a transmission shaft of the motor (201); when the brake mechanism (20) is in an unlocked state, the brake mechanism (20) is separated from a drive shaft of the motor (201).
  9. 9. The drive device (200) according to claim 8, wherein the drive device (200) further comprises a seal (203); The shell (10) is fixedly connected with an end cover (202) of the motor (201), the sealing piece (203) is arranged between the end cover (202) and the shell (10), and two ends of the sealing piece (203) are respectively propped against the end cover (202) and the shell (10).
  10. 10. An electric wheelchair, characterized in that it comprises a drive device (200) according to claim 8 or 9.

Description

Brake, driving device and electric wheelchair Technical Field The utility model relates to the technical field of waterproof design of brakes, in particular to a brake, a driving device and an electric wheelchair. Background Electric wheelchairs are an important auxiliary mobile device, the drive system of which is usually powered by means of an electric motor. In the use, in order to realize the switching of motor drive and manual drive, the stopper is widely used to carry out locking or separation operation to the motor output shaft to realize the braking to the motor and unlocking function. The brake mainly comprises a shell, a brake mechanism, a handle and the like, an operation port is formed in the shell, the brake mechanism is located in the shell, one end of the handle is connected with the brake mechanism, the other end of the handle extends to the outer side of the shell through the operation port, and the brake mechanism can be controlled to be matched with a transmission shaft of a motor through the handle, so that the motor transmission shaft is locked or separated. However, in the use, rainwater or other foreign matters easily invade the inside of the brake through the operation opening to influence the normal operation of the brake, and the service life of the brake is reduced. Disclosure of utility model The embodiment of the utility model aims to provide a brake, a driving device and an electric wheelchair, which are used for solving the technical problems that rainwater or other foreign matters easily invade the inside of the brake through an operation port, so that the normal operation of the brake is influenced and the service life of the brake is shortened in the prior art. The technical scheme for solving the technical problems of the embodiment of the utility model is that the utility model provides a brake, which comprises the following components: The device comprises a shell, a first cover, a second cover, a first cover and a second cover, wherein an operation port and a blocking part surrounding the operation port are formed in the outer side wall of the shell; the brake mechanism is arranged in the shell; One end of the handle is connected with the brake mechanism, the other end of the handle penetrates through the operation opening and extends to the outer side of the shell to form an operation part, and the handle can reciprocate relative to the shell along the extending direction of the operation opening; the blocking part is partially sleeved on the operation part, and the other part of the blocking part is covered on the outer side of the blocking part and is movably matched with the blocking part. In this embodiment, foreign matter such as rainwater can be prevented from entering the inside of the brake through the operation opening by the blocking member. Through protruding the blocking part that is equipped with on the lateral wall of casing, and blocking part winds the periphery side of locating the operation mouth, further prevent that foreign matter such as rainwater from flowing into the operation mouth along the lateral wall of casing, avoid foreign matter such as rainwater to enter into inside stopper and the motor through the operation mouth, guarantee the normal operating of stopper and motor promotes its life. In some embodiments, the blocking member includes a cover plate and a blocking portion disposed around a periphery of the cover plate, the blocking portion extends toward the direction of the housing, and the blocking portion is covered on an outer side of the blocking portion and is in clearance fit with the blocking portion, so that the blocking portion can reciprocate along an extending direction of the operation opening relative to the blocking portion. In the embodiment, the blocking part and the blocking part can form a double protection barrier, most rainwater or foreign matters can be effectively prevented from directly entering the operation opening under the blocking effect of the blocking part, and even if a small amount of rainwater or other foreign matters infiltrate into the area between the blocking part and the blocking part through the gap between the blocking part and the outer surface of the shell, the rainwater or the foreign matters can be prevented from entering the operation opening to the greatest extent and the waterproof performance and the reliability are obviously improved. And the blocking part is in clearance fit with the blocking part, and the circumferential coverage of the blocking part along the circumferential direction of the shell is larger than that of the blocking part along the circumferential direction of the shell, so that the blocking part can realize sliding fit along the circumferential direction of the shell relative to the blocking part. When the handle moves relative to the shell, the blocking part can move along the extending direction Z of the operation opening relative to the blocking part, so that the bloc