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CN-224209208-U - Electric tool

CN224209208UCN 224209208 UCN224209208 UCN 224209208UCN-224209208-U

Abstract

The utility model provides an electric tool which comprises a machine shell, a brake handle, a first brake piece, a second brake piece and a contact piece, wherein the brake handle is rotatably arranged on the machine shell around a rotation axis, the first brake piece is arranged on the brake handle, the second brake piece is arranged on the machine shell, the second brake piece can move along the rotation axis direction of the brake handle relative to the first brake piece, at least part of the contact piece protrudes out of the surface of the machine shell, which is close to the second brake piece, the protruding part is in contact with the second brake piece, and the strength of the contact piece is larger than that of the machine shell. The electric tool is provided with the contact piece corresponding to the second brake piece on the shell, and the contact piece is contacted with the second brake piece arranged on the shell, so that the contact piece with strength larger than that of the shell is used for bearing the extrusion of the second brake piece, the damage of the second brake piece to the shell is avoided, the contact friction with the second brake piece is reduced, and the reliability of braking operation is improved.

Inventors

  • GONG ZAOJING

Assignees

  • 江苏东成园林机械有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (10)

  1. 1. A power tool (1000), comprising: A housing (1); The brake handle (2) is rotatably arranged on the shell (1) around a rotation axis and is provided with a brake position and a starting position; The first brake piece (3), the first brake piece (3) is arranged on the brake handle (2), and a limiting part (31) is arranged on the first brake piece (3); the second brake piece (4) is arranged on the shell (1), the second brake piece (4) can move between a first position and a second position along the direction of the rotation axis of the brake handle (2) relative to the first brake piece (3), and a matching part (41) is arranged on the second brake piece (4); When the brake handle (2) is in a braking position, the second brake piece (4) is positioned at a first position, the matching part (41) and the limiting part (31) form limiting matching in the rotating direction of the brake handle (2) so as to limit the rotation of the brake handle (2), when the brake handle (2) is in a starting position, the second brake piece (4) is positioned at a second position, and the limiting matching of the matching part (41) and the limiting part (31) in the rotating direction of the brake handle (2) is released so as to enable the brake handle (2) to rotate; The electric tool (1000) is characterized by further comprising a contact piece (5) arranged on the casing (1), at least part of the contact piece (5) protrudes out of the surface of the casing (1) close to the second brake piece (4), the protruding part is in contact with the second brake piece (4), and the strength of the contact piece (5) is larger than that of the casing (1).
  2. 2. The electric tool (1000) according to claim 1, wherein a mounting groove (11) is provided on the housing (1), the second brake member (4) is located in the mounting groove (11), and at least a portion of the contact member (5) extends into the mounting groove (11) to abut against the second brake member (4).
  3. 3. The electric tool (1000) according to claim 2, wherein a receiving groove (12) is provided on an inner surface of a groove side wall of the mounting groove (11), the receiving groove (12) penetrates through the groove side wall of the mounting groove (11) in a direction away from the groove bottom wall of the mounting groove (11) to form an insertion opening (13), the contact (5) is inserted into the receiving groove (12) from the insertion opening (13), and a portion of the contact (5) extends into the mounting groove (11) from a notch of the receiving groove (12) to abut against the second brake (4).
  4. 4. A power tool (1000) according to claim 3, wherein an end of the contact member (5) remote from the groove side wall of the mounting groove (11) protrudes from the insertion opening (13) to the outside of the receiving groove (12).
  5. 5. The power tool (1000) of claim 1, wherein the contact (5) is a metal pin.
  6. 6. The power tool (1000) according to claim 1, wherein the contact member (5) is provided in plurality at intervals along the circumferential direction of the second brake member (4).
  7. 7. The electric power tool (1000) according to claim 6, wherein the second braking member (4) is provided with a plurality of the contact members (5) at intervals along the length direction of the second braking member (4) on both sides in the width direction of the second braking member (4).
  8. 8. The electric tool (1000) according to claim 1, wherein a supporting shaft (6) is convexly arranged on the casing (1), one end of the supporting shaft (6) is connected with the brake handle (2), and the first brake piece (3) and the second brake piece (4) are sleeved on the supporting shaft (6); the electric tool (1000) further comprises a spring (7), the spring (7) is sleeved on the supporting shaft (6) and located on one side, far away from the first brake piece (3), of the second brake piece (4), and two ends of the spring (7) are respectively abutted to the second brake piece (4) and the machine shell (1).
  9. 9. The electric tool (1000) according to claim 1, wherein a first boss (31 a) is convexly arranged on a surface of the first brake member (3) close to the second brake member (4), the limiting portion (31) is the first boss (31 a), a second boss (41 a) is convexly arranged on a surface of the second brake member (4) close to the first brake member (3), and the matching portion (41) is the second boss (41 a); When the second brake member (4) is positioned at the first position, the first boss (31 a) is abutted against one side of the second boss (41 a) in the rotation direction of the brake handle (2), and when the second brake member (4) is positioned at the second position, the first boss (31 a) is abutted against one side of the second boss (41 a) in the rotation axis direction of the brake handle (2).
  10. 10. The power tool (1000) of claim 1, wherein the power tool (1000) further comprises: A drive mechanism (400), the drive mechanism (400) being arranged on the housing (1); The transmission mechanism (200) is arranged on the shell (1), and the transmission mechanism (200) is connected with the driving mechanism (400) so as to drive the transmission mechanism (200) to operate through the driving mechanism (400); And the braking mechanism (300) is connected with the transmission mechanism (200) and the braking handle (2) so as to drive the braking mechanism (300) through the braking handle (2) to brake the transmission mechanism (200).

Description

Electric tool Technical Field The embodiment of the utility model relates to the technical field of electric tools, in particular to an electric tool. Background Existing electric tools such as chain saw are provided with brake mechanism, and brake mechanism generally includes brake handle and two brake blocks, and the brake handle can be rotationally installed on electric tool's casing, and the user can brake electric tool through rotating the brake handle. And the two brake pads are respectively arranged on the brake handle and the shell, and the two brake pads are mutually close to each other for extrusion after braking so as to keep the brake handle stationary after braking. The casing is usually an injection molding piece, and a brake pad arranged on the casing is contacted with the casing, so that the casing is extruded and deformed, and poor braking is caused. Disclosure of utility model The utility model provides an electric tool, which aims to solve the problem that a brake pad of the existing electric tool can press a casing to deform the casing. In order to solve the above technical problem, an embodiment of the present utility model provides an electric tool, including: A housing; the brake handle is rotationally arranged on the shell around a rotation axis and is provided with a brake position and a starting position; The first brake piece is arranged on the brake handle and is provided with a limiting part; The second brake piece is arranged on the shell, can move between a first position and a second position along the direction of the rotation axis of the brake handle relative to the first brake piece, and is provided with a matching part; When the brake handle is at a brake position, the second brake piece is positioned at a first position, and the matching part and the limiting part form limiting matching in the rotating direction of the brake handle so as to limit the rotation of the brake handle; when the brake handle is in the starting position, the second brake piece is positioned at a second position, and the limit fit of the fit part and the limit part in the rotating direction of the brake handle is released, so that the brake handle can rotate; the electric tool further comprises a contact piece arranged on the shell, at least part of the contact piece protrudes out of the surface of the shell, which is close to the second brake piece, and the protruding part is in contact with the second brake piece, and the strength of the contact piece is larger than that of the shell. Preferably, the casing is provided with a mounting groove, the second brake piece is located in the mounting groove, and at least part of the contact piece stretches into the mounting groove to abut against the second brake piece. Preferably, the inner surface of the groove side wall of the mounting groove is provided with a containing groove, the containing groove penetrates through the groove side wall of the mounting groove in the direction away from the groove bottom wall of the mounting groove to form an insertion port, the contact piece is inserted into the containing groove from the insertion port, and part of the contact piece stretches into the mounting groove from the notch of the containing groove to be abutted against the second brake piece. Preferably, an end of the contact piece away from the groove side wall of the mounting groove protrudes from the insertion opening to the outside of the accommodation groove. Preferably, the contact is a metal pin. Preferably, the contact member is provided in plurality at intervals along the circumferential direction of the second brake member. Preferably, the contact member is arranged around the second brake member. Preferably, a plurality of the contact members are provided at intervals along the length direction of the second brake member on both sides of the second brake member in the width direction of the second brake member. Preferably, a supporting shaft is convexly arranged on the shell, one end of the supporting shaft is connected with the brake handle, and the first brake piece and the second brake piece are sleeved on the supporting shaft; The electric tool further comprises a spring, the spring is sleeved on the supporting shaft and located on one side, away from the first brake piece, of the second brake piece, and two ends of the spring are respectively abutted to the second brake piece and the machine shell. Preferably, a first boss is convexly arranged on the surface, close to the second brake piece, of the first brake piece, the limiting part is the first boss, a second boss is convexly arranged on the surface, close to the first brake piece, of the second brake piece, and the matching part is the second boss; When the second brake piece is positioned at the first position, the first boss is abutted against one side of the second boss in the rotating direction of the brake handle, and when the second brake piece is positioned at the second posit