WO2016101378A1

WO2016101378A1 - Grinding machine protection cover capable of being fast dismounted

Info

Publication number: WO2016101378A1
Application number: PCT/CN2015/071366
Authority: WO
Inventors: 胡刚; 吴春谅
Original assignee: 深圳市京田精密科技有限公司
Priority date: 2014-12-23
Filing date: 2015-01-22
Publication date: 2016-06-30
Also published as: CN104552003B; CN104552003A

Abstract

A grinding machine protection cover capable of being fast dismounted comprises an outer cover (100) and an inner cover (200) that are buckled together, wherein openings for outwards exposing grinding wheels of the grinding machine are respectively formed in the outer cover (100) and the inner cover (200). The grinding machine protection cover capable of being fast dismounted also comprises a fast dismountable assembly (500). The fast dismountable assembly (500) comprises a handle (501), a counter-locking threaded rod (505) and a counter-locking screw nut (506). The handle (501) is fixedly connected to the counter-locking threaded rod (505), the counter-locking threaded rod (505) is rotatably fixed on the outer cover (100), the counter-locking screw nut (506) is fixedly arranged on the inner cover (200), and the counter-locking threaded rod (505) is screwed into the counter-locking screw nut (506) under the rotating effect of the handle (501). The fixation and the dismounting of the inner cover and the outer cover can be completed only by rotating the handle and screwing the counter-locking threaded rod into the counter-locking screw nut or unscrewing the counter-locking threaded rod out of the counter-locking screw nut, tools such as a spanner and pliers are not needed, and the problem of connecting accessory missing in the conventional protection cover dismounting process can be thoroughly avoided.

Description

Description: A grinder guard that can be quickly disassembled

[0001] The present invention relates to the field of grinders, and more particularly to a grinder shield that can be quickly disassembled.

Background technique

[0002] Grinders are commonly used equipment for sharpening various tools and tools. They are mainly composed of a base, a grinding wheel, an electric motor or other power source, a bracket, a shield and a water heater. The grinding wheel is arranged on the base. The top surface of the base has a space for accommodating a power source inside the base, and the power source transmits power to the reducer, and the reducer has a drive shaft that passes through the top surface of the base for fixing the grinding wheel. The protective cover is used to protect the grinder. The existing one that can be quickly disassembled is generally composed of three parts, namely an inner fixed cover, a spacer ring and an outer fixed cover, and three sets of screws, nuts, and flat pads are used. And spring washers, tightened and assembled with wrenches and screwdrivers

. This kind of traditional protective cover needs to be completed by means of tools after disassembly and assembly. In the disassembly and assembly, the traditional protective cover structure is laborious and laborious, and some dirt generated thereby is not easy to clean, which is inconvenient, and if it is dismantled Once the fastening screws or gaskets are lost, the installation work will be difficult, which will greatly affect the disassembly process.

technical problem

In order to solve the above technical problems, the present invention provides a quick-disconnectable grinder shield that is easy to use and has high stability.

Problem solution

Technical solution

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a quick-disassembling grinder protective cover, comprising an outer cover and an inner cover that are fastened together, in the outer cover and the The inner cover is provided with a spout for exposing the grinding wheel of the grinder, and the quick-disassembling grinder protective cover further comprises a quick-release assembly, wherein the quick-release assembly comprises a handle, a pair of locking threaded rods and a pair a lock nut, the handle is fixedly connected to the pair of lock threaded rods, the pair of lock threaded rods are rotatably fixed to the outer cover, and the pair of lock nuts are fixed to the inner cover The pair of locking threaded rods are screwed into the pair of lock nuts under the rotation of the handle, and the heads are riveted in the pair of lock nuts; the inner cover is oriented a closed positioning bump is disposed on a surface of the outer cover, and a positioning triangular groove is disposed on the spacer ring opposite to the closed positioning convex point, and the inner cover is fastened on the spacer ring Then, the closed positioning bump is caught in the positioning triangular groove; the positioning triangular groove is formed by the spacer ring itself being inwardly recessed, and the outer cover is provided with a fixing hole. The pair of locking threaded rods pass through the fixing holes.

[0005] For a quick-disassembling grinder shield of the present invention, as a further arrangement, the outer cover and the inner cover are hinged by a hinge.

[0006] For a quick-disassembling grinder shield of the present invention, as a further arrangement, a spacer ring is further disposed between the outer cover and the inner cover, and the spacer ring is fixed On the outer cover, the hinge is fixed on the spacer ring, and the inner cover is hinged to the spacer by the hinge.

[0007] For a quick-disassembling grinder shield of the present invention, the handle is an eccentric handle.

[0008] For a quick-disassembling grinder shield according to the present invention, as a further arrangement, a cushioning washer, a spring washer and a positioning washer are sequentially disposed on the pair of locking threaded rods.

[0009] For a quick-disassembling grinder shield of the present invention, as an optimal solution, the handle is vertically fixed to the pair of lock threaded rods.

[0010] For a quick-disassembling grinder shield according to the present invention, as a further arrangement, the fixing hole can be disposed in one of the positioning triangular grooves to facilitate the disassembly of the quick-release group.

Advantageous effects of the invention

Beneficial effect

[0011] A quick-disassembling grinder shield according to the present invention has the following beneficial effects: Since the present invention employs a pair of lock threaded rods on the outer cover and a handle on the lock threaded rod, The cover is provided with a pair of lock nuts with internal threads. When the inner cover and the outer cover need to be disassembled or fixed together, only the corresponding handle is required to screw the lock threaded rod into the lock nut, which can be completed. Fix the inner cover and the outer cover, and twist the handle in the reverse direction. Slightly unscrew the lock threaded rod from the lock nut on the inner cover, but do not completely unscrew the lock threaded rod, so that part of it remains in the pair. In the lock nut, the inner cover and the outer cover can be easily and quickly disassembled without any tools such as a wrench or a pliers, and the grinding wheel can be manually turned by simply turning the handle. The protective cover of the machine is easy to disassemble and assemble, and can completely avoid the problem of loss of connecting parts during the traditional protective cover disassembly process.

[0012] Further, the head of the lock threaded rod can be directly riveted into the lock nut, so that the lock threaded rod is always located in the lock nut, and when the shield is removed, the handle only needs to be rotated. The lock threaded rod is slightly retracted from the lock nut, and the outer cover and the inner cover of the grinder guard cover can be dismantled without completely withdrawing from the middle, but the two are not separated, and the disassembly is very convenient and quick. .

Brief description of the drawing

DRAWINGS

1 is a schematic view showing the overall structure of a sand turbine shield which can be quickly disassembled according to the present invention;

2 is a schematic structural view of a quick release assembly of a quick-disassembling grinder protective cover according to the present invention;

3 is a schematic structural view of a lock nut of a grinder shield that can be quickly disassembled according to the present invention;

4 is a schematic structural view of a closed positioning bump on an inner cover of a quick-disassembling grinder shield according to the present invention;

[0017] FIG. 5 is a partial cross-sectional structural view of a spacer of a grinder shield that can be quickly disassembled

BEST MODE FOR CARRYING OUT THE INVENTION

The technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

[0019] As shown in FIG. 1, the grinder protective cover is sleeved on the grinding wheel of the grinder, including the outer cover 100, the inner cover 200 and the spacer 300, the outer cover 100 and the inner cover. The spacer 300 is preferably in the form of a disk. The spacer ring 300 is located between the outer cover 100 and the inner cover 200. The diameter of the spacer ring 300 is adapted to the diameter of the outer cover 100 so that the circumference of the spacer ring 300 can be fixed on the edge of the outer cover 100. Then, the inner cover 200 is fastened to the spacer 300; a hinge 400 is disposed between the inner cover 200 and the spacer 300, and is hinged together by the hinge 400 to realize the folding action of the folding. [0020] As shown in FIG. 1, the outer cover 100 and the inner cover 200 and the spacer 300 are each provided with a cornice. After a quick-disassembling grinder guard is placed on the grinder, the grinder is Part of the grinding wheel is exposed through a cornice on a quick-displacement grinder guard to ensure high-speed rotation of the grinding wheel.

[0021] The grinder protective cover is further provided with a quick release assembly 500, which comprises a handle 501, a pair of lock threaded rods 505 and a pair of lock nuts 506, the ends of the handle 501 and one end of the lock threaded rod 505 are fixed together, the lock The threaded rod 505 is threaded at one end away from the handle 501 and can be screwed into the pair of lock nuts 506. Correspondingly, the lock nut is fixed to the inner cover 200, and its fixed position ensures that the inner cover 200 and the outer cover 100 are engaged. Thereafter, the lock threaded rod 505 can be inserted into the threaded hole of the lock nut 506, and the front end of the lock threaded rod 505 is directly riveted into the lock nut 506, as shown in FIG. 1, the lock nut 506 has One end of the threaded hole faces the outer cover 100, and the threaded end of the lock threaded rod 505 is located in the annular structure of the spacer 300, that is, toward the inner cover 20 0, when the inner cover 200 is fastened to the spacer 300 Thereafter, the lock threaded rod 505 is just aligned with the threaded hole of the lock nut 506. Thereafter, by rotating the handle 501, the lock threaded rod 505 is synchronously rotated, so that the lock threaded rod 505 is screwed into the lock nut 506, Inner cover 200 is fastened together with the outer cover 100 and the spacer 300. Handle 501 is preferably an eccentric handle.

[0022] In order to enable the inner cover 200 and the spacer 300 and the outer cover 100 to be fastened together, a snap reference is provided on the inner cover 200 and the spacer 300, as shown in FIG. The inner cover 200 is provided with a closed positioning bump 600. Corresponding to the positioning bump, an equal number of positioning triangular grooves 301 are arranged on the spacer ring 300, and the inner cover 200 can be closed after being fastened on the spacer ring 300. The positioning of the positioning bump 600 and the positioning triangular groove 301 as a reference, when the two are stuck together, means that the inner cover 200 and the spacer 300 are in an aligned state, after which the operator can rotate the handle 501, so that The lock threaded rod 505 is screwed into the lock nut 506 to secure the inner cover 200 to the spacer 300. A quick-disassembled grinder shield encloses the grinder of the grinder.

[0023] The structure of the quick release assembly 500 is shown in FIG. 2. In FIG. 2, the handle 501 is fixed substantially perpendicularly to the lock threaded rod 505, and the handle 501 is conveniently used to be fixedly connected thereto. The lock threaded rod 505 is screwed into the lock nut 506 to perform locking. In order to further improve the stability of the quick-release assembly 500 for installation and use, a cushioning washer 502, a spring washer 503 and a positioning washer 504 are sequentially disposed on the lock threaded rod 505, and the cushion washer 502 is located on the lock threaded rod 505. Close to the end of the handle 501, with the spring washer 503 and the cushioning pad 502, the lock threaded rod 505 can be prevented from falling off from the outer cover 100, and the second can also be In order to prevent the locking threaded rod 505 from being screwed too deep into the lock nut 506, it is difficult to unscrew.

3 is a schematic structural view of the lock nut 506 in the quick release assembly 500. As shown in the figure, one end is a nut, and the other end is provided with a threaded hole for screwing in the front end of the lock threaded rod 505, and a threaded hole. The depth and the internal thread length are adapted to the length of the external thread on the locking threaded rod 505.

4 is a partial structural view of an inner cover 200 of a quick-disassembling grinder shield according to the present invention, viewed in a front view, with a closed positioning bump 600 at the edge of the inner cover 200, and a closed positioning convex The point 600 protrudes from the surface of the inner cover 200, and can be arranged in a polyhedron shape. The number of the closed positioning protrusions 600 can be set to be corresponding to the number of the positioning triangular grooves 301 on the spacer ring, so that the two can be matched.

5 is a partial structural schematic view showing a cross section of a spacer of a quick-disassembling grinder shield according to the present invention. As shown, a plurality of positioning triangular grooves 301 are disposed at an edge of the spacer 300. The positioning triangular groove 301 is formed by triangulating inwardly at the edge of the spacer ring 300. The distribution of the positioning triangular groove 301 corresponds to the position of the closed positioning protrusion 600 on the inner cover 200, and the space formed by the contraction is formed. The cross-sectional area is slightly larger than the cross-sectional area of the closed positioning bump 600 such that the closed positioning bump 600 can be inserted into the positioning triangular groove 301. As shown in the figure, a positioning triangular groove 301 can be disposed on the spacer 300 corresponding to the lock nut 506. A fixing hole 302 is defined in the positioning triangular groove 301, and the fixing hole 302 is disposed. The crucible may be directly stamped so that the lock threaded rod 505 passes therethrough for securing the lock threaded rod 505. The diameter of the fixing hole 302 is slightly larger than the diameter of the locking threaded rod 505. After assembling, the locking threaded rod 505 is firstly passed through the fixing hole 302, and then the cushioning pad 502 is sequentially placed on the locking threaded rod 505. The spring washer 503 and the positioning washer 504 are sufficient. Of course, in the present invention, the position of the fixing hole 302 can be changed, and it can be disposed at other positions of the spacer 300 as long as it can be combined with the lock nut 506.

[0027] The assembly of the quick release group 500 is such that after the lock nut 506 is fixed on the inner cover 200, the lock is locked with the lock threaded rod 505 (ie, the lock threaded rod 505 is screwed into the lock nut 506), and then the lock is locked. The front end of the nut 506 is riveted so that the lock threaded rod 505 and the lock nut 506 are no longer dislocated, and the size of the lock threaded rod 505 is larger than the unthreaded portion of the thread. To disassemble the grinding wheel rim, simply loosen the quick-release group 500 and lift it up. An outer cover will automatically smash due to gravity, which can be easily disassembled and installed. When the grinding wheel is installed, it is only necessary to close the outer cover. , and the quick release group 500 is pressed down to a suitable position and locked by the handle 501. [0028] In the present invention, the spacer ring 300 and the outer cover 100 may be formed in a unitary shape.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and the scope of the knowledge of those skilled in the art may be used without departing from the scope of the present invention. Make various changes.

Claims

Claim

[Claim 1] A quick-disassembling grinder shield comprising an outer cover (100) and an inner cover (200) that are fastened together, the outer cover (100) and the inner cover ( 200) a rinsing port for exposing the grinding wheel of the grinder, wherein: the quick-disassembling grinder guard further comprises a quick-release assembly (500), the quick-release assembly

(500) comprising a handle (501), a pair of lock threaded rods (505) and a pair of lock nuts (506), the handle (501) being fixedly coupled to the pair of lock threaded rods (505), the pair of locks A threaded rod (505) is rotatably fixed to the outer cover (100), and the pair of lock nuts (506) are fixed to the inner cover (200), and the pair of lock threaded rods (505) ) can be screwed into the pair of lock nuts (506) under the rotation of the handle (501), and its head is riveted in the pair of lock nuts (506); in the inner cover (200) Providing a closed positioning bump (600) on a surface of the outer cover (100), and the closed positioning bump on the spacer ring (300)

(600) a relative position is provided with a positioning triangular groove (301), and after the inner cover (200) is fastened on the spacer ring (300), the closed positioning protrusion (600) is stuck in the The positioning triangular groove (301) is formed by the spacer ring (300) being inwardly recessed by the spacer ring (300), and the fixing cover (302) is provided on the outer cover (100). , the pair of locking threaded rods (505) from the fixing holes

Pass through (302).

[Claim 2] A quick-disassembling grinder shield according to claim 1, wherein: said outer cover (100) and said inner cover (200) pass through a hinge (400) Hinged.

[Claim 3] A quick-disassembling grinder shield according to claim 2, characterized in that: between the outer cover (100) and the inner cover (200) a spacer ring (300), the spacer ring (300) is fixed on the outer cover (100), and the hinge (400) is fixed on the spacer ring (300), the inner The cover (200) is hinged to the spacer ring (300) by the hinge (400).

[Claim 4] A quick-disassembling grinder shield according to claim 3, characterized in that The handle (501) is an eccentric handle.

A quick-disassembling grinder shield according to claim 4, wherein: the pair of lock threaded rods (505) are further provided with a buffer gasket (502) and a spring washer (503). ) and positioning spacers (504).

A quick-disassembling grinder shield according to claim 5, wherein: said handle (501) is vertically fixed to said pair of lock threaded rods (505) according to claims 2-6 A quick-disassembling grinder shield according to any one of the preceding claims, characterized in that: a closed positioning bump (600) is provided on a surface of the inner cover (200) facing the outer cover (100) Positioning a triangular groove (301) at a position opposite to the closed positioning protrusion (600) on the spacer ring (300), and the inner cover (200) is fastened to the spacer ring (300) After the upper portion, the closed positioning bump (600) is caught in the positioning triangular groove (301).

A quick-disassembling grinder shield according to claim 7, wherein: said fixing hole (302) is disposed in said positioning triangular groove (301).