CN210435897U

CN210435897U - Protective cover limiting mechanism of handheld angle grinder

Info

Publication number: CN210435897U
Application number: CN201921352565.0U
Authority: CN
Inventors: 李娜
Original assignee: Lvgeluo Machinery Ningbo Co ltd
Current assignee: Lvgeluo Machinery Ningbo Co ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-05-01
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a protective cover limiting mechanism of a handheld angle grinder, which comprises an angle grinder body and a protective cover arranged at the head of the angle grinder body, wherein the end part of the head is provided with a mounting seat, the protective cover is provided with a mounting hole matched with the mounting seat, the protective cover is sleeved on the mounting seat through the mounting hole, the end part of the mounting seat is provided with a pressing plate, and the pressing plate is used for preventing the protective cover from falling off the mounting seat; the inside wall of mounting hole is provided with a plurality of gear tooth's socket along the circumferencial direction, be provided with on the mount pad with gear tooth's socket offsets complex elastic component, the inner wall of mounting hole still is provided with spacing incision, spacing incision extends along the circumferencial direction of mounting hole, be provided with on the mount pad with spacing incision corresponds complex stopper. The utility model discloses possess easy operation convenience, the succinct reasonable advantage of structure.

Description

Protective cover limiting mechanism of handheld angle grinder

Technical Field

The utility model belongs to the technical field of electric tool, a angle mill is related to, in particular to protection casing stop gear of hand-held type angle mill.

Background

The angle grinder is a portable electric tool for cutting and grinding glass fiber reinforced plastics, and is mainly used for cutting, grinding and brushing metal and stone materials. The angle grinder is easy to generate scraps in the process of cutting or grinding metal or stone, and the scraps fly around, so that operators are easily injured; generally, the angle grinder is provided with a protective cover which is generally in a semicircular shape, and scraps are blocked and fly out from the other semicircular direction, so that the safety of an operator is ensured. The protective cover is provided with an open hoop which is sleeved on the end cover of the reduction box, the aperture of the hoop is adjusted through a screw, and the end cover of the reduction box is tightened to complete the installation of the protective cover; although the structure is simple, the installation and the disassembly are convenient, the whole structure is not reasonable enough, so that the following problems exist: when the orientation angle of the protective cover is adjusted, the orientation of the protective cover needs to be adjusted after the screw is loosened, and finally the screw is locked, so that the operation is complicated, and the working efficiency is influenced; and the screw is easy to loosen under the influence of the vibration of the angle grinder, so that potential safety hazards exist and the operator is endangered.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a protection casing stop gear of hand-held type angle mill, possess easy operation convenience, the succinct reasonable advantage of structure.

The utility model provides a technical scheme that its technical problem adopted is: a protective cover limiting mechanism of a handheld angle grinder comprises an angle grinder body and a protective cover arranged at the machine head of the angle grinder body, wherein a mounting seat is arranged at the end part of the machine head, the protective cover is provided with a mounting hole matched with the mounting seat, the protective cover is sleeved on the mounting seat through the mounting hole, a pressing plate is arranged at the end part of the mounting seat, and the pressing plate is used for preventing the protective cover from falling off the mounting seat; the inside wall of mounting hole is provided with a plurality of gear tooth's socket along the circumferencial direction, be provided with on the mount pad with gear tooth's socket offsets complex elastic component, the inner wall of mounting hole still is provided with spacing incision, spacing incision extends along the circumferencial direction of mounting hole, be provided with on the mount pad with spacing incision corresponds complex stopper.

Furthermore, the pressing plate is in a circular ring shape, the pressing plate is fixed at the end part of the mounting seat through a plurality of screws, so that the axial movement of the protective cover is limited, meanwhile, the elastic piece is prevented from falling, the protective cover is connected more firmly, and the safety performance is improved.

Further, the arc length occupied by the limiting notches is larger than that occupied by the limiting blocks; the arc length occupied by the limiting notch corresponds to the arc length occupied by the gear tooth sockets, so that the orientation of the protective cover can be conveniently adjusted.

Furthermore, the elastic piece is in a shape of a big bracket, a protruding part corresponding to the gear tooth socket is arranged in the middle of the elastic piece, and when the protruding part is clamped into the gear tooth socket, the circumferential rotation of the protective cover is limited, so that the protective cover is more firmly fixed relative to the machine head; the mounting seat is provided with two open slots, and two ends of the elastic part are respectively clamped in the open slots, so that the elastic part can be conveniently mounted.

The utility model has the advantages that: the protective cover is matched with the mounting seat through the mounting hole arranged on the protective cover, the limiting block arranged on the mounting seat is clamped into the limiting notch in the protective cover, and the elastic piece is in abutting fit with the limiting groove in the mounting hole, so that the circumferential rotation of the protective cover is limited, and then the axial movement of the protective cover is limited through the pressing plate arranged at the end part of the mounting seat, the multiple limiting enables the protective cover and the machine head to be firmly connected, the structure is simple and reasonable, and the problems of low working efficiency and potential safety hazard caused by unreasonable screw hoop mechanism in the prior art are solved; when the orientation of the protective cover needs to be changed, the protective cover is rotated to enable the elastic piece to be stressed and deformed, the protective cover can rotate relative to the mounting base, the protective cover is continuously rotated to enable the elastic piece to be abutted to different limiting grooves, and therefore the orientation of the protective cover is changed, and the operation is simple and convenient; generally, the utility model discloses possess easy operation convenience, the succinct reasonable advantage of structure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention applied to an angle grinder.

Fig. 2 is an explosion diagram of the overall structure of the present invention.

Fig. 3 is a schematic top view of the present invention with the platen removed.

Shown in the figure: 1-angle grinder body; 11-a mounting seat; 111-a limiting block; 112-open slots; 2-a protective cover; 21-mounting holes; 22-gear tooth socket; 23-limiting cut; 3, pressing a plate; 4-an elastic member; 41-raised portion.

Detailed Description

For a more intuitive and complete understanding of the technical solution of the present invention, the following non-limiting characteristic description is now performed by combining the drawings of the present invention:

as shown in fig. 1 to 3, a protective cover limiting mechanism of a handheld angle grinder comprises an angle grinder body 1 and a protective cover 2 arranged at a nose of the angle grinder body 1, wherein an installation seat 11 is arranged at an end of the nose, the protective cover 2 is provided with an installation hole 21 matched with the installation seat 11, the protective cover 2 is sleeved on the installation seat 11 through the installation hole 21, a pressing plate 3 is arranged at an end of the installation seat 11, and the pressing plate 3 is used for preventing the protective cover 2 from falling off the installation seat 11; the inside wall of mounting hole 21 is provided with a plurality of gear tooth's socket 22 along the circumferencial direction, is provided with on the mount pad 11 and offsets complex elastic component 4 with gear tooth's socket 22, and the inner wall of mounting hole 21 still is provided with spacing incision 23, and spacing incision 23 extends along the circumferencial direction of mounting hole 21, is provided with on the mount pad 11 and corresponds complex stopper 111 with spacing incision 23.

Specifically, clamp plate 3 that is "ring" form is fixed at 11 tip of mount pad through three screws, the output shaft has been worn out in the middle of mount pad 11, the aperture of clamp plate 3 is greater than the external diameter of output shaft, the installation of the clamp plate 3 of being convenient for, the external diameter of clamp plate 3 is greater than the aperture of mounting hole 21, be convenient for restrict the axial float of protection casing 2, elastic component 4 has been avoided simultaneously because of mechanical vibration or external force influence, make elastic component 3 drop and lead to the not hard up or the problem that drops of protection casing 2, the security has been improved.

The arc length occupied by the limiting notch 23 is longer than that occupied by the limiting block 111; the arc length occupied by the limiting notch 23 corresponds to the arc length occupied by the gear tooth sockets 22, and preferably, the arc length occupied by the limiting notch 23 is greater than or equal to the arc length occupied by the gear tooth sockets 22, so that the adjustable orientation angle range of the protective cover 2 is wider, and the application range of the angle grinder is wider.

The elastic piece 4 is in a shape of a big bracket, the middle part of the elastic piece 4 is provided with a convex part 41 corresponding to the gear tooth socket 22, when the convex part 41 is clamped into the gear tooth socket 22, the convex part 41 and the gear tooth socket 22 form gear limiting fit, and the circumferential rotation of the protective cover 2 is limited; two open slots 112 are formed in the mounting base 11, and two ends of the elastic element 4 are respectively clamped in the open slots 112.

Specifically, the elastic member 4 may also be a spring, the spring is installed in the open slot 112, a steel ball or a slider is further disposed at an end of the spring, the steel ball or the slider is slidably disposed in the open slot 112, the steel ball or the slider abuts against the corresponding gear tooth socket 22 under the pressure of the spring, and similarly, the steel ball or the slider and the gear tooth socket 22 form gear limit matching, and the circumferential movement of the shield 2 is limited.

Specifically, when the orientation of the protective cover 2 needs to be changed, an operator rotates the protective cover 2, so that the elastic part 4 is stressed to deform, the protruding part 41 bends towards the mounting seat 11, and the protruding part is separated from the gear tooth groove 22, so that the protective cover 2 can rotate relative to the mounting seat 11, the protective cover 2 continues to rotate, and the protruding part 41 is clamped into the next gear tooth groove 22 under the elasticity of the elastic part 4 until the orientation of the protective cover 2 is adjusted to a proper position, so that the operator can complete processing conveniently; when the protection cover 2 is rotated, the limiting block 111 slides in the limiting notch 23, and when the protruding part 41 is clamped into the first or last gear tooth groove 22, the limiting block 111 abuts against the limiting end face of the limiting notch 23, so that the protection cover 2 is ensured to face to a safe position all the time, and the safety of an operator is ensured.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a protection casing stop gear of hand-held type angle mill, includes angle mill body (1) and set up in protection casing (2) of the aircraft nose department of angle mill body (1), its characterized in that: the end part of the machine head is provided with a mounting seat (11), the protective cover (2) is provided with a mounting hole (21) matched with the mounting seat (11), the protective cover (2) is sleeved on the mounting seat (11) through the mounting hole (21), the end part of the mounting seat (11) is provided with a pressing plate (3), and the pressing plate (3) is used for preventing the protective cover (2) from falling off from the mounting seat (11); the inside wall of mounting hole (21) is provided with a plurality of gear tooth's socket (22) along the circumferencial direction, be provided with on mount pad (11) with gear tooth's socket (22) counterbalance complex elastic component (4), the inner wall of mounting hole (21) still is provided with spacing incision (23), the circumferencial direction of mounting hole (21) is extended along spacing incision (23), be provided with on mount pad (11) with spacing incision (23) correspond complex stopper (111).

2. The protective cover limiting mechanism of the handheld angle grinder as claimed in claim 1, wherein: the pressing plate (3) is in a ring shape, and the pressing plate (3) is fixed at the end part of the mounting seat (11) through a plurality of screws.

3. The protective cover limiting mechanism of the handheld angle grinder as claimed in claim 1, wherein: the arc length occupied by the limiting notch (23) is greater than that occupied by the limiting block (111); the arc length occupied by the limiting notches (23) corresponds to the arc length occupied by the gear tooth grooves (22) in total.

4. The protective cover limiting mechanism of the handheld angle grinder as claimed in claim 1, wherein: the elastic piece (4) is in a large bracket shape, a protruding portion (41) corresponding to the gear tooth groove (22) is arranged in the middle of the elastic piece (4), and when the protruding portion (41) is clamped into the gear tooth groove (22), the circumferential rotation of the protective cover (2) is limited; two open slots (112) are formed in the mounting seat (11), and two ends of the elastic piece (4) are clamped into the open slots (112) respectively.