阅读说明：本技术 一种便于更换防护罩的手提砂轮机 (Portable grinder convenient to change protection casing ) 是由 居忠 于 2020-06-17 设计创作，主要内容包括：本发明公开了手提砂轮机技术领域的一种便于更换防护罩的手提砂轮机,包括机壳,所述机壳的底部的前侧活动设置防护罩,所述机壳的左侧外壁连接握把,所述机壳前侧端面的内腔设置驱动电机,所述驱动电机的输出端连接转轴,所述转轴的底部活动连接砂轮,所述转轴的外壁设置轴承套环,所述轴承套环的外壁卡接紧固装置,所述紧固装置的外壁连接防护罩,所述防护罩的顶部活动卡接在机壳的底部,在转轴的外壁设置轴承套环,防护罩通过紧固装置可以快速在轴承套环上拆装,防护罩在轴承套环上拆装时,可以通过卡接杆限位卡接在限位凹槽中进行固定,且通过定位销可以定位安装在机壳的底部,整体结构更加简单,且防护罩拆装更加方便。(The invention discloses a portable grinder convenient for replacing a protective cover, which belongs to the technical field of portable grinders and comprises a shell, wherein the protective cover is movably arranged at the front side of the bottom of the shell, the outer wall at the left side of the shell is connected with a handle, a driving motor is arranged in an inner cavity of the front side end face of the shell, the output end of the driving motor is connected with a rotating shaft, the bottom of the rotating shaft is movably connected with a grinding wheel, the outer wall of the rotating shaft is provided with a bearing sleeve ring, the outer wall of the bearing sleeve ring is clamped with a fastening device, the outer wall of the fastening device is connected with the protective cover, the top of the protective cover is movably clamped at the bottom of the shell, the outer wall of the rotating shaft is provided with the bearing sleeve ring, the protective cover can be quickly disassembled and assembled on the bearing sleeve ring through the fastening device, when the protective cover is disassembled and assembled on the bearing sleeve ring, the protective cover can be fixed in a limiting groove through a clamping and can be positioned at the bottom of the shell through a positioning pin, overall structure is simpler, and the protection casing dismouting is more convenient.)

1. The utility model provides a portable grinder convenient to change protection casing, includes casing (1), its characterized in that: the front side activity of the bottom of casing (1) sets up protection casing (2), the left side wall connection handle (4) of casing (1), the inner chamber of casing (1) front side end face sets up driving motor (5), pivot (6) are connected to the output of driving motor (5), bottom swing joint emery wheel (3) of pivot (6), the outer wall of pivot (6) sets up bearing lantern ring (7), the outer wall joint fastener (8) of bearing lantern ring (7), outer wall connection protection casing (2) of fastener (8), the top activity joint of protection casing (2) is in the bottom of casing (1), and the junction of protection casing (2) and casing (1) sets up locating pin (9).

2. The portable grinder of claim 1, wherein the protective cover is replaceable, the portable grinder comprising: fastener (8) include outer lantern ring (81), lantern ring (82) in the inner wall of outer lantern ring (81) passes through the fixed bolster connection, the inner wall of interior lantern ring (82) and outer lantern ring (81) sets up siphunculus (83), the inner chamber activity of siphunculus (83) sets up push rod (84), push rod (84) set up activity plate (85) at the terminal surface of siphunculus (83) inner wall, expanding spring (86) are connected to the other end of activity plate (85), and the inner wall at siphunculus (83) is connected to the other end of expanding spring (86), the outer wall connection joint rod (87) of activity plate (85).

3. The portable grinder of claim 1, wherein the protective cover is replaceable, the portable grinder comprising: the top left and right sides of protection casing (2) all sets up spacing cardboard, the bottom left and right sides of casing (1) all sets up the locating plate that matches with spacing cardboard, and the outer wall of spacing cardboard and locating plate all sets up the locating hole that matches with locating pin (9).

4. The portable grinder of claim 2, wherein the protective cover is replaceable, the portable grinder comprising: the bearing lantern ring (7) is including connecting the bearing in pivot (6) outer wall, and the outer wall of bearing sets up the fastening lantern ring, and the left and right sides outer wall of fastening lantern ring all sets up the spacing draw-in groove that matches with joint pole (87).

5. The portable grinder of claim 1, wherein the protective cover is replaceable, the portable grinder comprising: the outer wall of the handle (4) is provided with a plastic lantern ring, and the surface of the plastic lantern ring is uniformly provided with anti-skid convex lines.

6. The portable grinder of claim 1, wherein the protective cover is replaceable, the portable grinder comprising: the top of the grinding wheel (3) is connected with a limiting screw, and the bottom of the rotating shaft (6) is provided with an internal thread blind hole matched with the limiting screw.

Technical Field

The invention relates to the technical field of portable grinders, in particular to a portable grinder with a protective cover convenient to replace.

Background

The in-process of current portable abrasive machine using is generally all placing the emery wheel in the protection casing below, can protect the hand through the protection casing, prevents that the condition of piece squirting injury hand from appearing in the emery wheel polishing process. The protective cover on the prior grinder has the defect of inconvenient replacement and disassembly. Therefore, the portable grinder with the protective cover convenient to replace is provided.

Disclosure of Invention

The invention aims to provide a portable grinder with a protective cover convenient to replace, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a portable grinder convenient to change protection casing, includes the casing, the front side activity of the bottom of casing sets up the protection casing, the left side wall connection handle of casing, the inner chamber of casing front end face sets up driving motor, the pivot is connected to driving motor's output, the bottom swing joint emery wheel of pivot, the outer wall of pivot sets up the bearing lantern ring, the outer wall joint fastener of the bearing lantern ring, fastener's outer wall connection protection casing, the top activity joint of protection casing is in the bottom of casing, and the junction of protection casing and casing sets up the locating pin.

Further, fastener includes the outer collar, the inner wall of outer collar passes through the interior lantern ring of fixed bolster connection, the inner wall of interior lantern ring and outer collar sets up the siphunculus, the inner chamber activity of siphunculus sets up the push rod, the push rod sets up movable plate at the terminal surface of siphunculus inner wall, expanding spring is connected to the other end of movable plate, and expanding spring's the other end is connected at the inner wall of siphunculus, movable plate's outer wall connection joint rod.

Furthermore, the top left and right sides of protection casing all sets up spacing cardboard, the bottom left and right sides of casing all sets up the locating plate that matches with spacing cardboard, and the outer wall of spacing cardboard and locating plate all sets up the locating hole that matches with the locating pin.

Further, the bearing lantern ring is including connecting the bearing at the pivot outer wall, and the outer wall of bearing sets up the fastening lantern ring, and the left and right sides outer wall of the fastening lantern ring all sets up the spacing draw-in groove that matches with the joint pole.

Furthermore, the outer wall of handle sets up the plastic lantern ring, and the surface of plastic lantern ring evenly sets up anti-skidding burr.

Furthermore, the top of the grinding wheel is connected with a limit screw, and the bottom of the rotating shaft is provided with an internal thread blind hole matched with the limit screw.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the bearing sleeve ring is arranged on the outer wall of the rotating shaft, the protective cover can be rapidly disassembled and assembled on the bearing sleeve ring through the fastening device, when the protective cover is disassembled and assembled on the bearing sleeve ring, the protective cover can be limited and clamped in the limiting groove through the clamping rod for fixing, and the protective cover can be positioned and installed at the bottom of the shell through the positioning pin, so that the integral structure is simpler, and the protective cover is more convenient to disassemble and assemble.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a rear view of the structure of the present invention;

fig. 3 is a schematic structural view of the fastening device of the present invention.

In the figure: 1. a housing; 2. a protective cover; 3. a grinding wheel; 4. a grip; 5. a drive motor; 6. a rotating shaft; 7. a bearing collar; 8. a fastening device; 81. an outer collar; 82. an inner collar; 83. pipe passing; 84. a push rod; 85. a movable plate; 86. a tension spring; 87. a clamping and connecting rod; 9. and a positioning pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that: a portable grinder convenient for replacing a protective cover is disclosed, please refer to figures 1 and 2, and comprises a casing 1, a protective cover 2 is movably arranged at the front side of the bottom of the casing 1, a handle 4 is connected with the outer wall at the left side of the casing 1, the casing 1 can be conveniently moved through the handle 4 to drive the grinder to move for processing an object, a driving motor 5 is arranged in an inner cavity of the front end face of the casing 1, the output end of the driving motor 5 is connected with a rotating shaft 6, the bottom of the rotating shaft 6 is movably connected with a grinding wheel 3, the driving motor 5 is connected with a power supply through a control switch and operates, the output end of the driving motor 5 drives the rotating shaft 6 to rotate through a speed reducer, so as to drive the grinding wheel 3 to rotate for polishing the object to be processed, a bearing lantern ring 7 is arranged on the outer wall of the rotating shaft 6, a fastening device 8 is clamped on the outer wall of the bearing lantern ring 7, the outer wall of the fastening device 8 is connected with the protective cover 2, and the top of the protective cover 2 is movably clamped at the bottom of the casing 1, and a positioning pin 9 is arranged at the joint of the protective cover 2 and the machine shell 1.

Referring to fig. 3, the fastening device 8 includes an outer collar 81, an inner wall of the outer collar 81 is connected to an inner collar 82 through a fixing bracket, a through pipe 83 is disposed on an inner wall of the inner collar 82 and an inner wall of the outer collar 81, a push rod 84 is movably disposed in an inner cavity of the through pipe 83, the push rod 84 is disposed on an end surface of the inner wall of the through pipe 83, a flexible spring 86 is connected to the other end of the flexible plate 85, the other end of the flexible spring 86 is connected to the inner wall of the through pipe 83, a fastening rod 87 is connected to an outer wall of the flexible plate 85, the shield 2 can be quickly assembled and disassembled on and disassembled from a bearing collar on an outer wall of the rotating shaft 6 through the fastening device 8, when the fastening rod 87 in the fastening device 8 is installed, the fastening rod is firstly pressed in the inner cavity of the through pipe 83, then the inner collar 82 is sleeved on the outer wall of the bearing collar 7, the fastening rod 87 is matched with a limiting slot on the outer wall of the bearing collar, and then the fastening rod 87 is pushed by the flexible spring 86, the clamping rod 87 is limited and clamped on the outer wall of the bearing lantern ring 7, and the push rod 84 is directly pulled when the clamping rod is taken out;

referring to fig. 2, the left side and the right side of the top of the protective cover 2 are both provided with a limiting clamping plate, the left side and the right side of the bottom of the enclosure 1 are both provided with a positioning plate matched with the limiting clamping plate, and the outer walls of the limiting clamping plate and the positioning plate are both provided with positioning holes matched with the positioning pins 9, when the protective cover 2 is installed, the protective cover 2 can be inserted into the positioning plate through the limiting clamping plate, the positioning holes are aligned and then the positioning pins 9 are inserted, so that the protective cover 2 can be quickly positioned when installed, and the protective cover 2 is ensured not to rotate along with the rotating shaft 6;

referring to fig. 2 again, the bearing lantern ring 7 includes a bearing connected to the outer wall of the rotating shaft 6, the outer wall of the bearing is provided with a fastening lantern ring, the outer walls of the left side and the right side of the fastening lantern ring are provided with limit slots matched with the clamping rods 87, so that the bearing lantern ring 7 can rotate after being connected with the protective cover 2, and the protective cover 2 can be conveniently installed through the fastening device 8 by arranging the limit slots matched with the clamping rods 87;

referring to fig. 1 again, the outer wall of the handle 4 is provided with a plastic lantern ring, the surface of the plastic lantern ring is uniformly provided with anti-slip ribs, and the comfort of the hand can be enhanced by the plastic lantern ring and the anti-slip ribs, so that the portable grinder is more comfortable in the use process;

referring to fig. 2 again, the top of the grinding wheel 3 is connected to the limit screw, and the bottom of the rotating shaft 6 is provided with an internal threaded blind hole matched with the limit screw, so that the bottom of the rotating shaft 6 is in threaded connection with the grinding wheel 3, and the grinding wheel 3 can be assembled and disassembled at the bottom of the rotating shaft 6.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.