CN115351673B

CN115351673B - Hand-held grinding tool

Info

Publication number: CN115351673B
Application number: CN202210770350.0A
Authority: CN
Inventors: 葛修鲁; 韩允; 陆潇
Original assignee: Xuzhou Baitong Aluminum Co ltd
Current assignee: Xuzhou Baitong Aluminum Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2024-02-06
Anticipated expiration: 2042-06-30
Also published as: CN115351673A

Abstract

The invention discloses a handheld grinding tool, which comprises a frame body assembly, a grinding part and a grinding part, wherein the motor is arranged in the frame body; and the protection component comprises a first protection disc, a second protection disc, a third protection disc and a control part, wherein the second protection disc and the third protection disc are movably matched with the first protection disc, the tool can be arranged according to different grinding sheets, the operation is flexible, the space is saved, the application is wide, the protection component can be retracted, the maximum operation visual field is ensured, and the rapid reaction is carried out aiming at abnormal tremble of the grinding sheets so as to avoid damage to people by broken fragments of the grinding sheets.

Description

Hand-held grinding tool

Technical Field

The invention relates to the technical field of metal grinding processes, in particular to a handheld grinding tool.

Background

The grinding processing belongs to finish machining, the machining quantity is small, the precision is high, the grinding tool is a currently very commonly used machining tool, the grinding piece on the handheld grinding tool is a consumable product, the loss is very easy to occur in the machining process, the grinding piece can be broken and cracked under high-speed operation, the personal injury to a user is caused, only a part of protective shell is arranged on the handheld grinding tool in the current market, and the personal protection under the conditions of breaking and cracking of the grinding piece is insufficient, so that potential safety hazards exist.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.

The present invention has been made in view of the above-mentioned problems of potential safety hazards associated with the existing hand-held grinding tools.

It is therefore an object of the present invention to provide a hand held grinding tool.

In order to solve the technical problems, the invention provides the following technical scheme: the hand-held grinding tool comprises a frame body assembly, a grinding part, a grinding rod and a grinding rod, wherein the frame body assembly comprises a shell, a motor arranged in the shell, a grip arranged at one end of the shell, a rotating handle matched with the motor, and a grinding part matched with the rotating handle; and the protection component comprises a first protection disc, a second protection disc, a third protection disc and a control part, wherein the second protection disc and the third protection disc are movably matched with the first protection disc.

As a preferred embodiment of the hand-held grinding tool according to the invention, wherein: the grinding piece comprises a grinding piece movably assembled and disassembled on the rotating handle, a limiting disc arranged above the grinding piece and fixedly connected with the rotating handle, and a fixed disc arranged below the grinding piece, wherein the fixed disc is in threaded connection with the rotating handle.

As a preferred embodiment of the hand-held grinding tool according to the invention, wherein: the first protection disk is arranged and movably connected with the rotating handle, the first protection disk, the second protection disk and the third protection disk are all provided with fan-shaped protection sheets with an angle of 120 degrees, the outer sides of the first protection disk, the second protection disk and the third protection disk are respectively provided with a first baffle, a second baffle and a third baffle, sliding grooves are formed in the outer walls of the second baffle and the third baffle, parallel second sliding strips and third sliding strips are arranged on the inner walls of the first baffle, the second sliding strips are in sliding fit with the sliding grooves of the second baffle, the third sliding strips are in sliding fit with the sliding grooves of the third baffle, an elastic piece is arranged between the second baffle and one end of the first baffle, and an elastic piece is arranged between the third baffle and the other end of the first baffle.

As a preferred embodiment of the hand-held grinding tool according to the invention, wherein: the two ends of the first baffle are provided with cavities, the inner walls and the outer walls of the two ends of the first baffle are provided with openings, the control piece is arranged in the cavities and comprises a feeler lever matched with a grinding piece, a first movable lever movably connected with the feeler lever, a second movable lever movably connected with the other end of the first movable lever, a control lever movably connected with the other end of the second movable lever and a clamping block fixedly connected with the second protection disk and the third protection disk, a stabilizing piece matched with the feeler lever is arranged at the opening of the inner wall of the first baffle, a bracket is arranged at the top end of the cavity, the bracket is movably connected with the middle part of the second movable lever, the control rod stretches out at the opening of the outer wall of the first baffle, a groove is formed in one side, close to the first baffle, of the clamping block, and the groove is matched with the control rod.

As a preferred embodiment of the hand-held grinding tool according to the invention, wherein: the stabilizer comprises a stabilizer bar fixedly connected with the first baffle and a torsion spring arranged between the stabilizer bar and the feeler lever, and the feeler lever is rotatably connected with the stabilizer bar.

As a preferred embodiment of the hand-held grinding tool according to the invention, wherein: the second baffle and the third baffle are provided with splicing blocks at one ends close to two ends of the first baffle, one ends of the splicing blocks are fixedly connected with the clamping blocks, the length of the splicing blocks is consistent with the width of the first baffle, and the splicing blocks are made of magnetic materials.

As a preferred embodiment of the hand-held grinding tool according to the invention, wherein: the access door is movably connected with the first baffle, a convex buckle is arranged on the access door, and a hole groove is formed in the port of the first baffle and is connected with the convex buckle in a buckling mode.

As a preferred embodiment of the hand-held grinding tool according to the invention, wherein: the contact rod one end is provided with the contact piece, the contact piece is close to grinding piece one side and sets up flutedly, the grinding piece is placed in the recess.

As a preferred embodiment of the hand-held grinding tool according to the invention, wherein: the fixed ring is arranged on the first protection disc and connected with the rotating handle in a dismounting mode, connecting plates are arranged at two ends of the fixed ring, and the two connecting plates are in threaded connection.

As a preferred embodiment of the hand-held grinding tool according to the invention, wherein: air outlets are formed in two sides of the shell, and a protective sleeve is arranged on the handle.

The invention has the beneficial effects that: the grinding machine can be set according to different grinding sheets, is flexible in operation, saves space and is wide in application, the protection assembly can be retracted, the maximum operation visual field can be ensured, and abnormal tremble of the grinding sheets can be rapidly reacted, ejected and closed, so that damage to people due to broken fragments of the grinding sheets can be avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic view of the overall structure of the hand-held grinding tool of the present invention.

Fig. 2 is a schematic view of a protective assembly of the hand-held grinding tool of the present invention.

Fig. 3 is a bottom view of the hand-held grinding tool of the present invention.

Fig. 4 is a cross-sectional view of a control member of the hand-held grinding tool of the present invention.

Fig. 5 is a schematic view of the structure of the stabilizer of the hand-held grinding tool of the present invention.

Fig. 6 is a schematic view of a portion of a hand-held grinding tool of the present invention.

Wherein: the tool comprises a frame assembly 100, a shell 101, a motor 102, a grip 103, a rotating handle 104, a protection assembly 200, a first protection disc 201, a second protection disc 202, a third protection disc 203, a first baffle 204, a second baffle 205, a third baffle 206, a second slide 207, a third slide 208, an elastic member 209, a split block 210, a fixed ring 211, a grinding member 300, a grinding sheet 301, a limiting disc 302, a fixed disc 303, a control member 400, a touch rod 401, a first movable rod 402, a second movable rod 403, a control rod 404, a clamping block 405, a bracket 406, a stabilizing rod 407, an access door 408 and a touch block 409.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

Example 1

Referring to fig. 1-5, a hand-held grinding tool includes a carriage assembly 100 and a protection assembly 200. The holder assembly 100 includes a hand-held grinding tool housing 101, a motor 102 disposed within the housing 101, a grip 103 disposed at one end of the housing 101, a rotatable handle 104 disposed to mate with the motor 102, and a grinding member 300 disposed to mate with the rotatable handle 104; the protection assembly 200 includes a first protection disc 201, second and third protection discs 202 and 203 disposed in movable engagement with the first protection disc 201, and a control member 400.

Specifically, the main structure of the present invention includes a frame assembly 100 and a protection assembly 200. The carriage assembly 100 includes a housing 101, a motor 102 disposed within the housing 101, a grip 103 disposed at one end of the housing 101, a rotatable handle 104 disposed to mate with the motor 102, and a abrading article 300 disposed below the housing 101. The abrading article 300 is used to abrade a workpiece to be machined. The protection assembly 200 includes a first protection disc 201 disposed on the rotation handle 104, a second protection disc 202 and a third protection disc 203 disposed under the first protection disc 201 in movable connection with the first protection disc 201, and a control member 400. The second protection disk 202 and the third protection disk 203 are slightly smaller in diameter and length than the first protection disk 201 so as to be able to be retracted under the first protection disk 201. Control 400 determines the use of abrading article 300 and once the set safety condition is exceeded, initiates movement of second protective disk 202 and third protective disk 203 to control the movement behavior and status of abrading article 300 to avoid injury to humans.

Further, the abrading article 300 includes an abrading sheet 301 provided on the rotatable handle 104 to be attachable and detachable, a stopper plate 302 provided above the abrading sheet 301 and fixedly connected to the rotatable handle 104, and a fixed plate 303 provided below the abrading sheet 301. The fixed disk 303 is screwed to the rotation handle 104. The diameter of the limiting plate 302 is larger than the diameter of the mounting hole of the grinding chip 301 to limit the position of the grinding chip 301 so as to prevent the grinding chip 301 from sliding. The fixing plate 303 further defines the position of the grinding chip 301, and fixes it at a position to be operated, and the inner side wall of the fixing plate 303 is provided with threads. The bottom end of the rotation handle 104 is provided with a thread matched with the rotation handle, and the grinding piece 301 is assembled and disassembled by the fixed disk 303.

Further, the first protection disc 201 is arranged and buckled with the rotating handle 104 to realize detachable movable connection, so that maintenance and replacement are facilitated. The first protection disc 201, the second protection disc 202 and the third protection disc 203 are all provided with sector protection sheets with an angle of 120 degrees, and the first baffle 204, the second baffle 205 and the third baffle 206 are respectively arranged at the outer edges of the first protection disc 201, the second protection disc 202 and the third protection disc 203 in the vertical direction downwards, wherein the second baffle 205 and the third baffle 206 are equal in length, equal in width and equal in height, and the height sum is slightly smaller than the first baffle 204. The second baffle 205 is located above the third baffle 206, and the outer walls of the second baffle 205 and the third baffle 206 are provided with sliding grooves. The inner wall of the first baffle 204 is provided with a second slide bar 207 and a third slide bar 208 which are parallel, the second slide bar 207 and the second baffle 205 slide in a sliding way, and the third slide bar 208 and the third baffle 206 slide in a sliding way, wherein the bottom end of the second baffle 205 and the top end of the third baffle 206 are not contacted with each other. An elastic piece 209 is arranged between the right end of the second baffle 205 and the right end of the first baffle 204, and in the embodiment, the elastic piece 209 is a spring; an elastic member 209 is disposed between the left end of the third baffle 206 and the left end of the first baffle 204. The left end of the second baffle 205 and the right end of the third baffle 206 are respectively movably connected with the two ends of the first baffle 204 by using a buckle or other modes. The control piece 400 determines whether abnormal vibration or other conditions occur on the grinding piece 301, so that the grinding piece 301 is about to be damaged, and needs to be integrally protected, if so, the connection between the second baffle 205 and the third baffle 206 and the two ends of the first baffle 204 are loosened, and the second baffle 205 and the third baffle 206 slide out along the second slide bar 207 and the third slide bar 208 respectively under the action of the elastic piece 209. The invention can set the control piece 400 according to different grinding sheets 301, has flexible operation, space saving and wide application, can retract the protection component to ensure the maximum operation field, and can rapidly respond to abnormal tremble of the grinding sheets to pop out and close the grinding sheets so as to avoid damage to people by broken fragments of the grinding sheets.

The operation process comprises the following steps: during the grinding process of the workpiece by the grinding chip 301, the vibration condition of the grinding chip 301 is monitored by the control piece 400, and if the vibration amplitude exceeding the normal vibration amplitude of the grinding chip 301 is generated, the control piece 400 is touched. The connection between the left end of the second baffle 205 and the right end of the third baffle 206 and the two ends of the first baffle 204 is released, and the second baffle 205 and the third baffle 206 are respectively slid and sprung along the second slide bar 207 and the third slide bar 208 to be closed under the action of the elastic piece 209, so that the grinding piece 301 is blocked from being ejected by fragments generated by breakage or collapse to scratch an operator.

Example 2

Referring to fig. 1 to 5, this embodiment differs from the first embodiment in that: the two ends of the first baffle 204 are provided with cavities, the inner walls and the outer walls at the two ends of the first baffle 204 are provided with openings, the control piece 400 is arranged in the cavities, the control piece 400 comprises a feeler lever 401 matched with the grinding piece 301, a first movable lever 402 movably connected with the feeler lever 401, a second movable lever 403 movably connected with the other end of the first movable lever 402, a control lever 404 movably connected with the other end of the second movable lever 403 and a clamping block 405 fixedly connected with the second protection disk 202 and the third protection disk 203, the opening part of the inner wall of the first baffle 204 is provided with a stabilizing piece matched with the feeler lever 401, the top end of the cavity is provided with a bracket 406, the bracket 406 is movably connected with the middle part of the second movable lever 403, the control lever 404 extends out of the opening part of the outer wall of the first baffle 204, one side of the clamping block 405 close to the first baffle 204 is provided with a groove, and the groove is matched with the control lever 404; the stabilizing piece comprises a stabilizing rod 407 fixedly connected with the first baffle 204 and a torsion spring arranged between the stabilizing rod 407 and the feeler lever 401, and the feeler lever 401 is rotatably connected with the stabilizing rod 407; and the second baffle 205 and the third baffle 206 are respectively provided with a split block 210 at one end close to the two ends of the first baffle 204, one end of the split block 210 is fixedly connected with the clamping block 405, the length of the split block 210 is consistent with the width of the first baffle 204, and the split block 210 is made of magnetic materials.

Specifically, in this embodiment, the two ends of the first baffle 204 are provided with cavities, the bottom ends of the inner walls and the top ends of the outer walls of the two ends of the first baffle 204 are provided with openings, and the control member 400 is disposed in the cavities. The control member 400 comprises a feeler lever 401 movably matched with the grinding chip 301, a first movable lever 402 movably connected with the feeler lever 401, a second movable lever 403 movably connected with the other end of the first movable lever 402, a control lever 404 movably connected with the other end of the second movable lever 403, and a clamping block 405 fixedly connected with the second protection disk 202 and the third protection disk 203. The feeler lever 401 determines the chatter of the grinding blade 301 by whether the grinding blade 301 touches the feeler lever 401. The distance between the contact rod 401 and the grinding sheet 301 can be set according to the safe tremble range of different materials of the grinding sheet 301, and the contact rod 401 can be touched once the grinding sheet 301 trembles beyond the safe range. The opening of the inner wall of the first baffle 204 is provided with a stabilizing member matched with the feeler lever 401, so as to prevent the feeler lever 401 from moving due to false touch or other reasons. The top end of the cavity is provided with a support 406, the support 406 is movably connected with the middle part of the second movable rod 402, and the second movable rod 403 takes the support 406 as a fixed point to perform lever movement. The control rod 404 stretches out at the opening of the outer wall of the first baffle 204, a groove is formed in one side, close to the first baffle 204, of the clamping block 405, the groove is matched with the control rod 404 in a clamping mode, when the contact rod 401 moves under enough force, the first moving rod 402 is driven to move in the vertical direction, then the second moving rod 403 moves in a lever mode to drive the control rod 404 to stretch out and draw back at the opening of the outer wall of the first baffle 204, and therefore the connection relation between the clamping block 405 and the first baffle 204 is controlled. When the control lever 404 moves, the latch 405 cannot be engaged with the first shutter 204, the first shutter 204 is disengaged, and the second shutter 205 and the third shutter 206 are spring-ejected.

Further, the stabilizer includes a stabilizer bar 407 fixedly connected with the first barrier 204 and a torsion spring disposed between the stabilizer bar 407 and the contact bar 401. The torsion spring is used to limit the horizontal position of the feeler lever 401 in the static condition, and at the same time, the force required to move the feeler lever 401 is increased, so that the second baffle 205 and the third baffle 206 are prevented from being sprung out by elastic force when the second baffle 205 and the third baffle 206 are not required by false touch, the stabilizer lever 407 provides a moving fulcrum for the feeler lever 401, the feeler lever 401 is rotatably connected with the stabilizer lever 407, and when the feeler lever 401 is stressed, the stabilizer lever 407 is used as the fulcrum to perform lever movement.

Further, the second baffle 205 and the third baffle 206 are each provided with a split block 210 at one end near both ends of the first baffle 204. The left end of the second baffle 205 and the right end of the third baffle 206 are respectively close to the two ends of the first baffle 204, and after they pop up, the left end of the second baffle 205 and the right end of the third baffle 206 will touch. One end of the split block 210 is fixedly connected with the clamping block 405 and is respectively fixed on the left end of the second baffle 205 and the right end of the third baffle 206. The length of the split block 210 is consistent with the width of the first baffle 204, so that the clamping block 405 can be clamped with the control rod 404 after the second baffle 205 and the third baffle 206 return to the first baffle 204. The split block 210 is made of magnetic materials, the second baffle 205 split block 210 and the third baffle 206 split block 210 generate magnetic attraction force, and when they pop up and touch, they are tightly attached due to the magnetic force, so that the protection effect of the protection component 200 is better and more stable.

The rest of the structure is the same as in embodiment 1.

The operation process comprises the following steps: the vibration condition of the contact rod 401 on the grinding sheet 301 is judged by whether the grinding sheet 301 touches the contact rod 401, and whether the grinding sheet 301 touches the contact rod 401 is judged by the stabilizing piece, and the contact rod 401 is touched once the grinding sheet 301 exceeds the safety range and is not touched by mistake. When the contact rod 401 is stressed, the stabilizer 407 is used as a fulcrum to perform lever motion, so that the first movable rod 402 is driven to perform vertical motion, and then the second movable rod 403 is also driven to perform lever motion, so that the control rod 404 is driven to perform telescopic motion at the opening of the outer wall of the first baffle 204. When the control lever 404 moves, the clamping block 405 has no way to clamp, the first baffle 204 is separated, the second baffle 205 and the third baffle 206 are ejected out of the second baffle 205 and the third baffle 206 by the magnetic attraction generated by the second baffle 205 and the third baffle 206, respectively, so that the first protection disc 201, the second protection disc 202, the third protection disc 203, the first baffle 204, the second baffle 205 and the third baffle 206 are closed to form a finished protection cover.

Example 3

Referring to fig. 1 to 6, this embodiment differs from the above embodiment in that: the two ends of the first baffle 204 are provided with access doors 408 matched with the cavities, the access doors 408 are movably connected with the first baffle 204, the access doors 408 are provided with convex buckles, and the port of the first baffle 204 is provided with a hole slot which is connected with the convex buckle; one end of the contact rod 401 is provided with a contact block 409, one surface of the contact block 409, which is close to the grinding piece 301, is provided with a groove, and the grinding piece 301 is placed in the groove; the first protection disc 201 is provided with a fixed ring 211, the fixed ring 211 is connected with the rotating handle 104 in a dismounting way, two ends of the fixed ring 211 are provided with connecting plates, and the two connecting plates are connected in a threaded way; air outlets are formed in two sides of the shell 101, and a protective sleeve is arranged on the handle 103.

Specifically, both ends of the first baffle 204 are provided with access doors 408 matched with the cavity, and the control member 400 in the cavity can be seen by opening the access doors 408, so that the service life of the tool is prolonged by facilitating overhauling and maintaining the control member 400 by overhauling personnel. The access door 408 is hinged with the first baffle 204, and the access door 408 is provided with a convex buckle facing the first baffle 204, a hole groove is formed in the port of the first baffle 204 and is connected with the convex buckle in a buckling manner, and the access door 408 is opened only when the access door needs to be overhauled and is closed through the convex buckle and the hole groove in normal times.

Further, a detachable contact block 409 is arranged at one end of the contact rod 401, a groove is formed in one surface of the contact block 409, which is close to the grinding piece 301, and the grinding piece 301 is placed in the groove, so that the vibration movement of the grinding piece 301 up and down can be monitored, and the protection is more comprehensive. Moreover, the detachable contact block 409 can replace the contact block 409 with different groove widths according to the grinding sheets 301 with different materials, so that the application is more comprehensive and the replacement is simpler and more convenient. The first protection disc 201 is provided with a fixing ring 211, the fixing ring 211 can be opened and closed, and the fixing ring 211 is connected with the rotating handle 104 in a dismounting way, so that the whole protection assembly 200 is convenient to disassemble and maintain. The fixed ring 211 both ends all are provided with the connecting plate, offer the through-hole on the connecting plate and supply the screw to pass through, and two connecting plates pass through screw threaded connection, and the nut is fixed.

Further, the air outlets are formed in two sides of the shell 101 to help the whole tool to dissipate heat better, and the protecting sleeve is arranged on the grip 103 to fit the habit of grasping by hands, so that the tool conforming to the ergonomics is more comfortable to use.

The rest of the structure is the same as in embodiment 2.

The operation process comprises the following steps: the fixing ring 211 is adjusted according to the size of the different rotating handles 104 by replacing the proper contact block 409 according to the use requirement, and the protection assembly 200 is fixed. When service or cleaning is required, the access door 408 is snapped to separate the male snap and the female snap to expose the control member 400 for operation.

Claims

1. A hand-held grinding tool, characterized by: comprising the steps of (a) a step of,

the frame body assembly (100) comprises a shell (101), a motor (102) arranged in the shell (101), a grip (103) arranged at one end of the shell (101), a rotating handle (104) matched with the motor (102) and a grinding piece (300) matched with the rotating handle (104); the method comprises the steps of,

a protection assembly (200) comprising a first protection disc (201), a second protection disc (202) and a third protection disc (203) arranged in a movable fit with the first protection disc (201), and a control member (400);

the grinding piece (300) comprises a grinding sheet (301) which is movably assembled and disassembled on the rotating handle (104), a limiting disc (302) which is arranged above the grinding sheet (301) and fixedly connected with the rotating handle (104), and a fixed disc (303) which is arranged below the grinding sheet (301), wherein the fixed disc (303) is in threaded connection with the rotating handle (104);

the novel anti-theft protection device is characterized in that the first protection disc (201) is movably connected with the rotating handle (104), the first protection disc (201), the second protection disc (202) and the third protection disc (203) are all provided with fan-shaped protection sheets with an angle of 120 degrees, a first baffle (204), a second baffle (205) and a third baffle (206) are respectively arranged on the outer sides of the first protection disc (201), the second protection disc (202) and the third protection disc (203), sliding grooves are respectively formed in the outer walls of the second baffle (205) and the third baffle (206), a second sliding strip (207) and a third sliding strip (208) which are parallel are arranged on the inner wall of the first baffle (204), the second sliding strip (207) is in sliding fit with the sliding grooves of the second baffle (205), the third sliding strip (208) is in sliding fit with the sliding grooves of the third baffle (206), an elastic piece (209) is arranged between the second baffle (205) and one end of the first baffle (204), and an elastic piece (209) is arranged between the third baffle (206) and the other end of the first baffle (204).

The novel grinding device comprises a first baffle (204), a control piece (400) and a support (406), wherein cavities are formed in the two ends of the first baffle (204), openings are formed in the inner wall and the outer wall of the two ends of the first baffle (204), the control piece (400) is arranged in the cavities, the support (406) is movably connected with the middle of the second baffle (204), a first movable rod (402) is movably connected with the other end of the first movable rod (402), a second movable rod (403) is movably connected with the other end of the second movable rod (403), a control rod (404) is movably connected with the other end of the second movable rod (403), and a clamping block (405) is fixedly connected with a second protection disc (202) and a third protection disc (203), a stabilizing piece matched with the contact rod (401) is arranged at the opening of the inner wall of the first baffle (204), the top end of the cavity is provided with the support (406), the control rod (404) is movably connected with the middle of the second movable rod (403), the control rod (404) stretches out of the opening of the outer wall of the first baffle (204), and a groove is formed in one side of the clamping block (405) close to the first baffle (204);

the stabilizer comprises a stabilizer bar (407) fixedly connected with the first baffle plate (204) and a torsion spring arranged between the stabilizer bar (407) and the feeler lever (401), and the feeler lever (401) is rotatably connected with the stabilizer bar (407).

2. The hand-held grinding tool of claim 1, wherein: and the second baffle (205) and the third baffle (206) are respectively provided with a splicing block (210) at one end close to the two ends of the first baffle (204), one end of each splicing block (210) is fixedly connected with the clamping block (405), the length of each splicing block (210) is consistent with the width of the first baffle (204), and the splicing blocks (210) are made of magnetic materials.

3. The hand-held grinding tool of claim 2, wherein: the novel air conditioner is characterized in that access doors (408) matched with the cavities are arranged at two ends of the first baffle (204), the access doors (408) are movably connected with the first baffle (204), convex buckles are arranged on the access doors (408), and hole grooves are formed in the positions of the ports of the first baffle (204) and are connected with the convex buckles in a buckling mode.

4. A hand-held grinding tool according to claim 3, wherein: one end of the feeler lever (401) is provided with a touch block (409), one surface of the touch block (409) close to the grinding piece (301) is provided with a groove, and the grinding piece (301) is placed in the groove.

5. The hand-held grinding tool of claim 4, wherein: the novel protective device is characterized in that a fixed ring (211) is arranged on the first protective disc (201), the fixed ring (211) is connected with the rotating handle (104) in a dismounting mode, connecting plates are arranged at two ends of the fixed ring (211), and the two connecting plates are in threaded connection.

6. The hand-held grinding tool of claim 5, wherein: air outlets are formed in two sides of the shell (101), and a protective sleeve is arranged on the handle (103).