CN219041576U

CN219041576U - Electric tool with Hall reversing structure

Info

Publication number: CN219041576U
Application number: CN202223577279.9U
Authority: CN
Inventors: 钟国友; 张春官; 马国刚; 任雷羊
Original assignee: Zhejiang Ken Tools Co ltd; Ken Holding Co ltd
Current assignee: Zhejiang Ken Tools Co ltd; Ken Holding Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-16
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses an electric tool with a Hall reversing structure, and relates to the technical field of electric tools. The technical key points are as follows: the novel reversing device comprises a left shell, a right shell, a reversing fixed seat, a reversing deflector rod, a steel ball, a small first spring, a reversing rod, a first magnet, a second magnet, a first Hall sensor, a second Hall sensor and a control panel assembly, wherein the control panel assembly is used for controlling the rotation of a motor so as to realize a reversing function, and the novel reversing device has the advantages that: the Hall sensor can output reversing signals in a non-contact mode, and mechanical friction is avoided, so that the tool is simple to assemble, long in service life and stable in work.

Description

Electric tool with Hall reversing structure

Technical Field

The utility model relates to the technical field of electric tools, in particular to an electric tool with a Hall reversing structure.

Background

At present, a direct current electric tool in the market generally adopts a motor, a switch, a control panel assembly, a gear transmission device and a rotary executing component to realize various control and rotary actions.

The existing direct current power tool is provided with an independent switch module. It has the following drawbacks:

1. the switch module is added, so that the appearance of the shell is huge, the leads are various, the production process is complex, and the cost is high;

2. the conventional switch outputs a reversing signal in a mode that an electrode is in mechanical contact with a PCB trigger, and the mechanical contact is unstable, so that when the electric tool is vibrated, the mechanical contact is not firm, the phenomenon of instant disconnection exists, the electric tool is unstable in work, and the electric tool is not rotated when being rotated;

3. the mechanical contact life is shorter, the service life period of the electric tool is increased by the current user, and the mechanical abrasion cannot meet the increasing demands of the electric tool in the current market.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide an electric tool with a Hall reversing structure, which has the following advantages: the independent switch module is canceled, and the tool reversing signal is fed to the control panel assembly through the Hall sensor to achieve the reversing function, so that the reversing signal is output in a non-contact mode, and the tool is simple to assemble, long in service life and stable in work.

The above object of the present utility model is achieved by the following technical solutions:

the utility model provides an electric tool of hall switching-over structure, includes left casing and right casing, and splice between the two, just the left side casing with install the motor in the space that forms in the right casing, the motor output is connected with gear, gear arranges in the space, gear one end is connected with rotatory executive component, rotatory executive component is located outside the space, the trigger is still installed to space department, trigger one end is connected with the trigger connecting rod, the trigger connecting rod is arranged in the space, the other end of trigger connecting rod is connected with the second spring, the other end of second spring connect in the left side casing with the inner wall that the right casing formed is equipped with the switching-over fixing base in addition, the both ends of switching-over fixing base are fixed respectively on the left side casing with on the right casing, the switching-over driving lever is installed to the switching-over fixing base upper end, just the switching-over pole is installed to the other end of switching-over fixing base, the switching-over driving lever control the switching-over pole, the trigger one end is connected with the trigger connecting rod, the trigger connecting rod is connected with the second spring, the other end is connected with the second magnet through the buckle with the switching-over pole, the corresponding magnet sets up with the second control panel corresponds the sensor assembly, and is located in the space.

The present utility model may be further configured in a preferred example to: the first Hall sensor and the second Hall sensor are electrically connected with the control panel assembly, and the first Hall sensor and the second Hall sensor are not contacted with the first magnet and the second magnet.

The present utility model may be further configured in a preferred example to: the first magnet and the second magnet are detachably connected with the reversing rod.

The present utility model may be further configured in a preferred example to: the control board assembly is electrically connected with the motor.

The present utility model may be further configured in a preferred example to: the reversing fixed seat is internally provided with a steel ball and a first spring, the reversing deflector rod is locked with the reversing fixed seat through a buckle, and the buckle can realize the positioning of the left, middle and right positions of the reversing rod.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the independent switch module is canceled, so that the cost is reduced;

2. the tool reversing signal is fed to the control panel assembly by a Hall sensor, so that the reversing function is achieved;

3. the Hall sensor can output reversing signals in a non-contact mode, and mechanical friction is avoided, so that the tool is simple to assemble, long in service life and stable in work.

Drawings

FIG. 1 is a partial cross-sectional view of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is an exploded view of the structure of the present utility model;

fig. 4 is a schematic diagram of the reversing structure of the present utility model.

Reference numerals: 1. a left housing; 2. a right housing; 3. a motor; 4. a gear transmission; 5. a rotation executing part; 6. a reversing fixing seat; 7. a reversing deflector rod; 8. a reversing lever; 9. a first magnet; 10. a second magnet; 11. a control panel assembly; 12. a first hall sensor; 13. a second hall sensor; 14. a steel ball; 15. a first spring; 16. a buckle; 17. a trigger; 18. a trigger link; 19. and a second spring.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 4, an electric tool with a hall reversing structure according to the present utility model includes a left casing 1 and a right casing 2, which are spliced together, and the two casings are substantially identical to the casing of a conventional electric tool, and can be fixed by screws after being spliced together. The motor 3 is installed in a gap formed in the left casing 1 and the right casing 2, the motor 3 can adopt the servo motor 3, and the forward and reverse rotation of the motor 3 can be realized. The output end of the motor 3 is connected with a gear transmission device 4, the gear transmission device 4 connected with the motor 3 can refer to the prior art, as long as the motor 3 drives the rotary execution part 5 to rotate normally, the gear transmission device 4 is arranged in a gap, one end of the gear transmission device 4 is connected with the rotary execution part 5, the rotary execution part 5 is positioned outside the gap, the outer end of the rotary execution part 5 is not limited to a tool head with a single function, and the rotary execution part can also be a clamping structure, so that different tool heads, such as a drill bit, a socket wrench and the like, can be conveniently clamped, and the multifunction of the electric tool can be realized. The trigger 17 is also installed in the gap, one end of the trigger 17 is connected with the trigger connecting rod 18, the trigger connecting rod 18 is arranged in the gap, the other end of the trigger connecting rod 18 is connected with the second spring 19, the other end of the second spring 19 is connected to the inner wall formed by the left casing 1 and the right casing 2, the restoring force of the second spring 19 is utilized to transmit to the trigger connecting rod 18, and then the restoring force of the second spring 19 is transmitted to the trigger 17, so that the restoration of the trigger 17 is realized.

As shown in fig. 3 and 4, a reversing fixing seat 6 is further provided, and two ends of the reversing fixing seat 6 are respectively fixed on the left casing 1 and the right casing 2, that is, the reversing fixing seat 6 is fixed through the left casing 1 and the right casing 2. The reversing deflector rod 7 is arranged at the upper end of the reversing fixed seat 6, the reversing rod 8 is arranged at the other end of the reversing fixed seat 6, the reversing deflector rod 7 is mechanically connected with the reversing rod 8, and the mechanical connection is a connecting rod mechanism, so long as the reversing deflector rod 7 can be ensured to control the reversing of the reversing rod 8. The first magnet 9 and the second magnet 10 are arranged on two sides of the reversing rod 8, and the magnets and the reversing rod 8 are detachably connected and can be arranged in a mosaic or sticking mode. The magnet material can be neodymium iron boron, ferrite and the like, and only the material can cooperate with a Hall sensor to realize Hall motion.

As shown in fig. 1-4, a control board assembly 11 is correspondingly arranged on the upper side of the reversing lever 8, the control board assembly 11 is positioned in the gap, and a first hall sensor 12 and a second hall sensor 13 are correspondingly arranged on the control board assembly 11. The control board is electrically connected with the first hall sensor 12 and the second hall sensor 13 respectively, and meanwhile, the first hall sensor 12 and the second hall sensor 13 are not contacted with the first magnet 9 and the second magnet 10. The first hall sensor 12 and the second hall sensor 13 here are linear hall sensors, and the control of the rotation speed is realized by controlling the relative positions of the magnet and the hall sensors.

As shown in fig. 3, a steel ball 14 and a first spring 15 are further installed in the reversing fixed seat 6, the reversing lever 7 is locked with the reversing fixed seat 6 through a buckle 16, and the locking of the reversing lever 8 is realized by using the restoring force of the steel ball 14 and the first spring 15. The locking of the buckle 16 and the reversing fixed seat 6 can realize the positioning of the left, middle and right positions of the reversing lever 8.

The working principle of the embodiment is as follows: the reversing rod 8 drives the magnet and the magnetic field of the Hall sensor to induce, so that the purpose that the Hall sensor outputs different reversing signals is achieved, and the motor 3 is controlled to turn to realize the reversing function by the control board. The trigger 17 is pulled, and the relative position of the magnet and the hall sensor is controlled to control the rotation speed.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides an electric tool of hall switching-over structure, includes left casing (1) and right casing (2), and splice between the two, just install motor (3) in the space that forms in left casing (1) with right casing (2), motor (3) output is connected with gear drive (4), gear drive (4) are arranged in the space, gear drive (4) one end is connected with rotatory executive component (5), rotatory executive component (5) are located outside the space, trigger (17) are still installed in space department, trigger (17) one end is connected with trigger connecting rod (18), trigger connecting rod (18) are arranged in the space, trigger connecting rod (18) the other end is connected with second spring (19), the other end of second spring (19) is connected in the inner wall that left casing (1) and right casing (2) formed, characterized in that is equipped with reversing fixed seat (6) in addition, reversing fixed seat (6) both ends are fixed respectively in left casing (1) and right casing (2) are installed reversing lever (7) reversing lever (8) are installed in reversing fixed seat (8), the reversing deflector rod (7) controls the reversing of the reversing rod (8), a first magnet (9) and a second magnet (10) are arranged on two sides of the reversing rod (8), a control board assembly (11) is correspondingly arranged on the upper side of the reversing rod (8), the control board assembly (11) is located in the gap, and a first Hall sensor (12) and a second Hall sensor (13) are correspondingly arranged on the control board assembly (11).

2. The electric tool with the hall reversing structure according to claim 1, wherein the first hall sensor (12) and the second hall sensor (13) are electrically connected with the control board assembly (11), and neither the first hall sensor (12) nor the second hall sensor (13) is in contact with the first magnet (9) nor the second magnet (10).

3. The hall-effect reversing-structured electric tool according to claim 1, wherein the first magnet (9) and the second magnet (10) are detachably connected to the reversing lever (8).

4. A hall-reversing-structured electric tool according to claim 1, wherein the control board assembly (11) is electrically connected to the motor (3).

5. The electric tool with the Hall reversing structure according to claim 1, wherein a steel ball (14) and a first spring (15) are further installed in the reversing fixed seat (6), the reversing deflector rod (7) is locked with the reversing fixed seat (6) through a buckle (16), and the buckle (16) can achieve the positioning of the left, middle and right positions of the reversing rod (8).