CN213164703U

CN213164703U - Rotatable angle mill

Info

Publication number: CN213164703U
Application number: CN202022250911.3U
Authority: CN
Inventors: 卢剑峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-05-11
Anticipated expiration: 2030-10-10

Abstract

The utility model provides a rotatable angle grinder, which comprises a shell, a handle, a driving component, a gear box and a grinding wheel; the outer end face of the shell is provided with a track groove, the inner end face of the handle is provided with a latch, and the latch slides along the track groove when the handle is rotated; a groove-shaped support is integrally formed on the handle, an elastic element is arranged in a groove body of the support, and the top of the elastic element is connected with a locking button; a plurality of clamping grooves are distributed on the circumference of the inner end surface of the shell at intervals, the locking button is provided with a spring bolt of which the free end can be embedded into the clamping grooves, and the spring bolt can be separated from the clamping grooves by pressing the locking button to release the locking between the handle and the shell; the driving assembly comprises a motor and a gear set, the output end of the motor rotor extends out of the shell and then is in transmission connection with the gear set, and the output end of the gear set is in key connection with the grinding wheel. The utility model discloses an adaptability adjustment can be made according to operator's custom and environment to the angle, and work efficiency is high, long service life.

Description

Rotatable angle mill

Technical Field

The utility model belongs to the technical field of grinding device, concretely relates to rotatable formula angle mill.

Background

An angle grinder, also known as a grinder or a disc grinder, is a portable electric tool for cutting and grinding, and is mainly used for cutting, grinding and brushing metal and stone materials.

The design of traditional angle mill handle is mostly from an angle to consider best to hold the sense, meets different service environment in daily use, and the operator often can adjust human posture and hold the handle, and there is very big drawback in the operation like this: firstly, the work efficiency is low due to the continuous posture adjustment; secondly, the applicability of the machine environment is poor; thirdly, the unreasonable holding posture causes the grinding plate to be easy to damage. There is therefore a need to develop an angle grinder that is adaptive to the operator's habits and circumstances.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rotatable formula angle mill to solve current angle mill and be difficult to make the adaptability adjustment according to operator's custom and environment, problem that work efficiency is low, life is short.

The utility model provides a following technical scheme:

the rotatable angle grinder is characterized by comprising a machine shell, a handle, a driving assembly, a gear box and grinding wheels;

the end parts of the shell and the handle are circular, the outer end face of the shell is provided with a track groove required for the handle to rotate, the inner end face of the handle is provided with a latch matched with the track groove, and when the handle is rotated, the latch slides along the track groove;

a groove-shaped support is integrally formed on the handle, an elastic element is assembled in a groove body of the support, the top of the elastic element is connected with a locking button, and a movable gap is reserved between the locking button and the support in the height direction in a normal state; at least two clamping grooves are distributed on the circumference of the inner end surface of the shell at intervals, a spring bolt with a free end capable of being embedded into the clamping grooves is arranged on the locking button, and the spring bolt can be separated from the clamping grooves by pressing the locking button to release the locking connection between the handle and the shell;

the drive assembly comprises a motor and a gear set, the motor is installed in the shell, the motor is powered by a power supply, the output end of a rotor of the motor extends out of the shell and is connected with the gear set in a transmission mode, the gear set is installed in the gear box, and the output end of the gear set extends out of the gear box and is connected with the grinding wheel in a key mode.

Preferably, be equipped with the shaping portion that takes the cavity hole that is used for spacing locking button on the casing, locking button can laminate the interior pore wall of shaping portion slides from top to bottom.

Preferably, the top of the locking button protrudes from the forming part under normal conditions.

Preferably, one side of the bottom of the locking button, which is opposite to the bolt, is provided with a limiting wall protruding outwards, and the elastic element jacks up the locking button in a normal state, so that the limiting wall is tightly attached to the bottom of the forming part.

Preferably, the bottom of the locking button is further provided with a blind hole, the top of the elastic element is inserted into the blind hole, and the elastic element can upwards extrude the blind hole.

Preferably, a control switch and a power supply which are electrically connected with each other are arranged in the handle, and the control switch is pressed to control the on-off of the power supply and the electric connection of the motor.

Furthermore, a nail column is formed in the handle, an avoidance groove with an opening at the top is formed in the spring bolt, and the locking button can be pressed by the elastic element to enable the avoidance groove to be attached to the nail column.

Furthermore, the outer end face of the casing is provided with two parallel track grooves, the track grooves are partially opened, the handle is correspondingly provided with two clamping teeth, and the clamping teeth can be inserted into the track grooves from the opening parts of the track grooves.

The utility model has the advantages that: the handle of the angle grinder is provided with the locking button, the inner end face of the shell is provided with the clamping groove, the locking button is provided with the spring bolt with the end part capable of being embedded into the clamping groove, and the locking button is jacked up by the elastic element in a normal state to limit the spring bolt in the clamping groove, so that the handle and the shell are locked, and relative rotation between the handle and the shell is prevented. When the angle of the grinding wheel needs to be changed, the locking button is pressed to enable the lock tongue to be separated from the clamping groove so as to release the locking connection between the handle and the shell, so that the operation convenience and comfort of a user are improved, and the safety of the operator is protected; the grinding wheel is prevented from being damaged due to improper holding posture, and the service life of the angle grinder is ensured.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic view of an angle adjustment structure of the present invention;

fig. 3 is a schematic view of another angle adjustment structure of the present invention;

fig. 4 is a schematic structural view of the left and right double-wall clamping spring bolt of the present invention.

Labeled as: 1. a housing; 2. a handle; 3. an elastic element; 4. a locking button; 5. a power source; 6. a control switch; 7. a gear case; 8. a grinding wheel; 9. a track groove; 10. clamping teeth; 11. an opening part; 12. a support; 13. a clearance for movement; 14. a latch bolt; 15. a card slot; 16. a left chuck wall; 17. a right chuck wall; 18. nailing columns; 19. an avoidance groove; 20. a motor; 21. a rotor; 22. a gear set; 23. a molding section; 24. a limiting wall; 25. blind holes; 26. pressing a plate; 27. a shield.

Detailed Description

As shown in fig. 1 to 3, the rotatable angle grinder includes a housing 1, a handle 2, an elastic member 3, a locking button 4, a driving assembly, a power source 5, a control switch 6, a gear box 7, and a grinding wheel 8.

The end parts of the casing 1 and the handle 2 are circular, the outer end face of the casing 1 is provided with a track groove 9 for the handle 2 to rotate, the inner end face of the handle 2 is provided with a latch 10 matched with the track groove 9, and when the handle 2 is rotated, the latch 10 slides along the track groove 9. Preferably, the outer end surface of the casing 1 is provided with two parallel rail grooves 9, the rail grooves 9 are partially opened, the handle 2 is correspondingly provided with two latches 10, and the latches 10 can be inserted into the rail grooves 9 through the opening 11 of the rail grooves, so as to ensure the connection strength between the handle 2 and the casing 1.

A groove-shaped support 12 is integrally formed on the handle 2, an elastic element 3 is assembled in a groove body of the support 12, and the elastic element 3 can be an element which can be elastically deformed, such as a compression spring, a disc spring, a plate spring and the like. The top of the elastic element 3 is connected with the locking button 4, a movable gap 13 is reserved between the locking button 4 and the support 12 in the height direction under the normal state, and the bottom of the locking button 4 can be abutted against the support 12 by pressing. A bolt 14 is formed on one side of the locking button 4, a slot 15 matched with the width of the bolt 14 is arranged on the inner end surface of the casing 1, and the free end of the bolt 14 of the locking button 4 is embedded into the slot 15 under the upward thrust action of the elastic element 3, so that the handle 2 and the casing 1 are locked. As shown in fig. 4, a left clamping wall 16 and a right clamping wall 17 are integrally formed in the handle 2 along the length direction of the bolt, and the left clamping wall 16 and the right clamping wall 17 simultaneously clamp the bolt 14, so that the bolt 14 is prevented from being broken due to the left-right swinging caused by grinding vibration.

The handle 2 is also internally provided with a nail post 18, the bolt 14 is provided with an avoidance groove 19 with an open top, and the avoidance groove 19 can avoid the nail post 18 in the locking state and the unlocking state of the angle grinder.

The driving assembly comprises a motor 20 and a gear set 22, the motor 20 is installed in the machine shell 1, a control switch 6 and a power supply 5 which are electrically connected with each other are installed in the handle 2, the power supply 5 supplies power for the motor 20, the power supply 5 can select a lithium battery, and the control switch 6 can be pressed to control the on-off of the electrical connection between the power supply 5 and the motor 20. The output end of the rotor 21 of the motor 20 is in transmission connection with a gear set 22, the gear set 22 is installed in a gear box 7 screwed at the tail end of the casing, the gear set 22 is a bevel gear pair, one bevel gear is in key connection with the tail end of the rotor 21, the end part of a rotating shaft in the other bevel gear extends out of the gear box 7 and is in key connection with a pressing plate 26, the grinding wheel 8 can be locked on the pressing plate 26 through a bolt, and the motor 20 drives the grinding wheel 8 to rotate at a high speed through the gear set 22 to realize. The casing 1 is fixedly provided with a protective cover 27 on the outer side of the grinding wheel 8, and the protective cover 27 semi-surrounds the grinding wheel 8, thereby playing the roles of preventing grinding scraps from splashing and protecting the safety of operators.

The forming part 23 with a hollow hole for limiting the locking button 4 is arranged on the machine shell 1, the locking button 4 can be attached to the inner hole wall of the forming part 23 to slide up and down, the forming part 23 prevents the locking button 4 from deflecting, and the reliability of the pressing action of the locking button 4 is ensured. The top of the locking button 4 protrudes from the forming part 23 in a normal state, so that the locking button 4 is convenient to press.

The bottom of the locking button 4 is provided with a limiting wall 24 protruding outwards at the side opposite to the bolt 14, and the elastic element 3 jacks up the locking button 4 under normal state, so that the limiting wall 24 is tightly attached to the bottom of the forming part 23. The stopper wall 24 further stops the bottom of the locking button 4 from being deviated left and right, so that the locking button 4 can be smoothly moved up and down.

The bottom of the locking button 4 is further provided with a blind hole 25, the top of the elastic element 3 is inserted into the blind hole 25, the blind hole 25 limits the elastic element in the horizontal direction, and the elastic element 3 can upwards extrude the blind hole 25 until the locking button 4 is jacked up.

The method for adjusting the grinding angle of the angle grinder comprises the following steps:

pressing down the control switch 6, cutting off the power supply of the grinding wheel motor, then pressing the locking button 4, making the free end of the bolt 14 break away from the clamping groove 15, unlocking between the handle 2 and the casing 1, rotating the handle 2 or the casing 1 to change the connection angle between the two until the free end of the bolt 14 moves to the lower part corresponding to another clamping groove, then loosening the locking button 4, the elastic element 3 automatically resets the locking button 4 upwards, the bolt 14 is embedded into the clamping groove to lock the handle 2 and the casing 1 again, so as to realize the purpose of adjusting the grinding angle.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The rotatable angle grinder is characterized by comprising a machine shell, a handle, a driving assembly, a gear box and grinding wheels;

the drive assembly comprises a motor and a gear set, the motor is installed in the shell and powered by a power supply, the output end of the rotor of the motor extends out of the shell and is connected with the gear set in a transmission mode, and the output end of the gear set extends out of the gear box and is connected with the grinding wheel in a key mode.

2. The rotatable angle grinder of claim 1, wherein the housing has a forming portion with a hollow hole for limiting a locking button, and the locking button can slide up and down along the inner hole wall of the forming portion.

3. The rotatable angle grinder of claim 2, wherein a top of the locking button normally protrudes from the forming portion.

4. The rotatable angle grinder of claim 3, wherein a side of the bottom of the locking button opposite to the locking tongue is provided with a limiting wall protruding outwards, and the elastic element jacks up the locking button under normal conditions to enable the limiting wall to be tightly attached to the bottom of the forming part.

5. The rotatable angle grinder of claim 2, wherein the locking button further has a blind hole at a bottom thereof, and a top of the elastic member is inserted into the blind hole, and the elastic member presses the blind hole upward.

6. The rotatable angle grinder of claim 1, wherein a stud is formed in the handle, an open-topped avoiding groove is formed in the latch, and the locking button is pressed by the elastic element to make the avoiding groove fit the stud.

7. The rotatable angle grinder of claim 1, wherein the outer end surface of the housing is provided with two parallel track grooves, the track grooves are partially opened, and the handle is correspondingly provided with two latches which can be inserted into the track grooves through the opening portions of the track grooves.

8. The rotatable angle grinder of claim 1, wherein the handle has mounted therein a control switch and a power source electrically connected to each other, and pressing the control switch controls the on/off state of the electrical connection between the power source and the motor.