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CN-224218921-U - Electric tool

CN224218921UCN 224218921 UCN224218921 UCN 224218921UCN-224218921-U

Abstract

The utility model provides an electric tool, which comprises a main body, a connecting assembly connected with the main body, and a main control module arranged on the connecting assembly, wherein the connecting assembly comprises a first connecting assembly and a second connecting assembly, a telescopic control assembly is arranged at the joint of the first connecting assembly and the second connecting assembly, the telescopic control assembly comprises a cross beam, the electric tool further comprises a telescopic switch assembly, the telescopic switch assembly comprises a first position signal part arranged on the cross beam and a second position signal part arranged on the second connecting assembly, when the second connecting assembly is in a first state, the first position signal part corresponds to the second position signal part, and at the moment, the telescopic switch assembly generates a first signal and transmits the first signal to the main control module. The electric tool adopts the telescopic switch assembly to detect the telescopic state of the connecting assembly, ensures that the second connecting assembly of the electric tool is in the extending state during working, further ensures the operation safety, and has simple structure and higher reliability.

Inventors

  • WANG HAODONG
  • DAI YIQIANG
  • ZHANG HAOWEN

Assignees

  • 江苏东成园林机械有限公司

Dates

Publication Date
20260512
Application Date
20250430

Claims (10)

  1. 1. An electric tool comprises a main body (1), a connecting component (2) connected with the main body (1), and a main control module (4) arranged on the connecting component (2); the connecting assembly (2) comprises a first connecting assembly (21) and a second connecting assembly (22), one end of the first connecting assembly (21) is connected with the main body (1), the other end of the first connecting assembly (21) is connected with one end of the second connecting assembly (22) in a relatively telescopic manner, and the main control module (4) is arranged at one end, far away from the first connecting assembly (21), of the second connecting assembly (22); A telescopic control assembly (23) is arranged at the joint of the first connecting assembly (21) and the second connecting assembly (22), the telescopic control assembly (23) comprises a cross beam (231), and the cross beam (231) is connected with the first connecting assembly (21); The electric tool is characterized by further comprising a telescopic switch assembly (6), wherein the telescopic switch assembly (6) is electrically connected with the main control module (4), and the telescopic switch assembly (6) comprises a first position signal component (61) arranged on the cross beam (231) and a second position signal component (62) arranged on the second connecting assembly (22); When the second connection assembly (22) is in a first state, the first position signal component (61) corresponds to the second position signal component (62), and the telescopic switch assembly (6) generates a first signal and transmits the first signal to the main control module (4).
  2. 2. The electric tool according to claim 1, wherein the first connecting assembly (21) and the second connecting assembly (22) are provided on opposite sides of the main body (1), and opposite ends of the cross beam (231) are connected to the first connecting assemblies (21) on opposite sides, respectively; The first position signal component (61) comprises a conductive piece (611) arranged in the cross beam (231), the second position signal component (62) comprises a butt joint piece (621) arranged on the second connecting assemblies (22) at two opposite sides, and the butt joint pieces (621) on the second connecting assemblies (22) at two opposite sides are respectively and electrically connected with the main control module (4); When the second connecting assembly (22) is in the first state, the opposite ends of the conductive piece (611) are respectively electrically connected with the butt joint pieces (621) on the second connecting assembly (22) on the opposite sides.
  3. 3. The electric tool according to claim 2, wherein the second connection assembly (22) is made of an electrically conductive material, and the docking element (621) is electrically connected to the main control module (4) through the second connection assembly (22); And/or the butt joint piece (621) is electrically connected with the main control module (4) through a wire (7), and the wire (7) is positioned inside the second connecting component (22).
  4. 4. The electric tool according to claim 1, wherein the telescopic switch assembly (6) is an opto-electronic switch assembly, the first position signal component (61) and/or the second position signal component (62) comprises a light emitting module (6A) and a light receiving module (6B), the main control module (4) being electrically connected with the light emitting module (6A) and the light receiving module (6B); When the second connection assembly (22) is in the first state, the light receiving module (6B) is capable of generating a photoelectric change signal and transmitting the photoelectric change signal to the main control module (4).
  5. 5. The power tool according to claim 4, wherein the telescopic switch assembly (6) is an optoelectronic switch assembly, one of the first position signal member (61) and the second position signal member (62) including the light emitting module (6A), the other including the light receiving module (6B); When the second connecting component (22) is in an extending state, the light emitting module (6A) corresponds to the light receiving module (6B), so that the light receiving module (6B) can receive light rays emitted by the light emitting module (6A), and further the light receiving module (6B) generates a photoelectric change signal.
  6. 6. The power tool of claim 1, wherein the telescopic switch assembly (6) is a laser transceiver assembly, one of the first position signal component (61) and the second position signal component (62) comprises a laser emitting module (6E), the other one comprises a laser receiving module (6F), and the main control module (4) is electrically connected with the laser emitting module (6E) and the laser receiving module (6F); when the second connecting component (22) is in the first state, the laser emitting module (6E) corresponds to the laser receiving module (6F), so that the laser receiving module (6F) can receive laser emitted by the laser emitting module (6E), and further the laser receiving module (6F) generates a photoelectric change signal and transmits the photoelectric change signal to the main control module (4).
  7. 7. The power tool according to any one of claims 2-6, wherein the second position signal member (62) is disposed in the second connection assembly (22), and the second connection assembly (22) is provided with a through hole (220) penetrating a sidewall thereof, the through hole (220) corresponds to the second position signal member (62), and the through hole (220) is located between the second position signal member (62) and the first position signal member (61).
  8. 8. The power tool according to claim 1, wherein the telescopic switch assembly (6) is a hall sensing assembly, one of the first position signal member (61) and the second position signal member (62) comprises a hall switch (6G), the other one comprises a magnetic element (6H), and the main control module (4) is electrically connected with the hall switch (6G); When the second connecting assembly (22) is in the first state, the Hall switch (6G) corresponds to the magnetic element (6H), so that the Hall switch (6G) generates a Hall signal and transmits the Hall signal to the main control module (4).
  9. 9. The power tool according to claim 1, wherein the telescopic switch assembly (6) is an NFC sensing assembly, one of the first position signal component (61) and the second position signal component (62) comprises a radio frequency transceiver module (6I), the other comprises an NFC sensing element (6J), and the main control module (4) is electrically connected with the radio frequency transceiver module (6I); When the second connecting component (22) is in the first state, the radio frequency transceiver module (6I) corresponds to the NFC inductive element (6J), so that the radio frequency transceiver module (6I) generates an electrical signal and transmits the electrical signal to the main control module (4).
  10. 10. The power tool of claim 1, wherein the power tool is a lawn mower or a snow plow.

Description

Electric tool Technical Field The utility model relates to the technical field of electric tool structures, in particular to an electric tool. Background At present, a lawn mower is generally provided with a connecting component for pushing, the connecting component generally comprises a first connecting component connected to two sides of a lawn mower main body and a second connecting component connected with the first connecting component in a telescopic manner, and a handle for an operator to push during operation is arranged on the second connecting component. When the lawn mower is in a non-working state, the lawn mower needs to be stored, and for storage, a folding and telescopic design is adopted for the connecting assembly, namely, the second connecting assembly can be contracted into the first connecting assembly to shorten the length of the connecting assembly during storage, and the connecting assembly is folded to be abutted against the lawn mower body to reduce the occupied space of the connecting assembly. Meanwhile, in order to meet the safety requirement, the connecting assembly is provided with a safety switch mechanism, when the second connecting assembly in the connecting assembly is completely extended, the safety switch mechanism is triggered, so that a switch signal is output to the main control module, and the main control module can normally enter a running state at the moment and responds to operations such as cutter running, lawn mower movement and the like. The current safety switch mechanism generally adopts structures such as a micro switch and an excitation rod, and when the second connecting component is in an extending state, the micro switch is triggered by the excitation rod. However, the safety switch mechanism has more switch devices and wire harnesses, increases cost and assembly complexity, and has poor reliability. Disclosure of utility model The utility model aims to provide an electric tool, which adopts a telescopic switch assembly to detect the telescopic state of a connecting assembly, ensures that a second connecting assembly of the electric tool is in an extending state when the electric tool works, further ensures the operation safety, and has simple structure and higher reliability. The utility model provides an electric tool, which comprises a main body, a connecting assembly connected with the main body and a main control module arranged on the connecting assembly, wherein the connecting assembly comprises a first connecting assembly and a second connecting assembly, one end of the first connecting assembly is connected with the main body, the other end of the first connecting assembly is connected with one end of the second connecting assembly in a relatively telescopic manner, the main control module is arranged at one end, far away from the first connecting assembly, of the second connecting assembly, a telescopic control assembly is arranged at the joint of the first connecting assembly and the second connecting assembly, the telescopic control assembly comprises a cross beam, the cross beam is connected with the first connecting assembly, the electric tool further comprises a telescopic switch assembly, the telescopic switch assembly is electrically connected with the main control module, and the telescopic switch assembly comprises a first position signal part arranged on the cross beam and a second position signal part arranged on the second connecting assembly; When the second connecting assembly is in a first state, the first position signal component corresponds to the second position signal component, and at the moment, the telescopic switch assembly generates a first signal and transmits the first signal to the main control module. In one implementation, the first connecting component and the second connecting component are arranged on two opposite sides of the main body, two opposite ends of the cross beam are respectively connected with the first connecting components on two opposite sides, the first position signal component comprises a conductive piece arranged in the cross beam, the second position signal component comprises a butt joint piece arranged on the second connecting components on two opposite sides, and the butt joint pieces on the second connecting components on two opposite sides are respectively electrically connected with the main control module; When the second connecting component is in the first state, the opposite ends of the conductive component are respectively and electrically connected with the butt-joint components on the second connecting components on the opposite sides so as to form a current loop. In one implementation manner, the second connection component is made of a conductive material, and the butt joint piece is electrically connected with the main control module through the second connection component; or the butt joint piece is electrically connected with the main control module through a wire, and the wi