TWM595563U - Shock-absorptive handheld grinder - Google Patents

Abstract

A vibration-damping portable grinder is provided with a body seat, a vibration-damping connector, a grinding wheel piece and a locking member, a transmission shaft is arranged in the body seat, the transmission shaft is driven and rotated by the driver, the vibration-damping connector and the grinding wheel piece The locking fastener is sequentially sleeved on the transmission shaft, so that the vibration-damping connector is connected to the transmission shaft, and the locking member presses the grinding wheel piece against the vibration-damping connector, and the vibration-damping connector has a shell and a weight ball, the shell There is a ring-shaped vibration-damping space inside. The vibration-damping space surrounds the outer side of the transmission, and the weight ball is located in the vibration-damping space of the housing, and the vibration generated during the use of the grinder is displaced in the vibration-damping space, thereby reducing Vibration makes the user's hands less prone to fatigue, increases the life of the grinder, and enables more precise grinding or cutting operations.

Description

Shock-absorbing portable grinder

A vibration-reducing portable grinder, especially a vibration-reducing portable grinder that uses a weight ball on the transmission shaft to reduce the amount of vibration when the grinder is used.

The general portable grinder uses the drive shaft to drive the grinding wheel (cutting blade or grinding blade) to rotate, to grind or cut the material, which belongs to a state of compressive rotation, so the concentrated force on the transmission shaft is extremely large and forms The unilateral force will cause greater vibration, shorten the service life, and cause fatigue easily. It is not suitable for applications requiring more precise grinding or cutting. Therefore, how to reduce the vibration of the portable grinder in use is the subject that the related industry urgently wants to improve.

The main purpose of this creation is to use the vibration-damping connector installed on the drive shaft of the grinder, so that when the grinder is in use, the vibration-damping connector generates a force opposite to the vibration direction of the grinder, thereby reducing the grinder's The vibration generated during use makes the user's hands less prone to fatigue, increases the service life of the grinder, and enables more precise grinding or cutting operations.

In order to achieve the above purpose, the grinding machine of the present invention includes a body seat, a vibration damping connector, a grinding wheel piece and a locking member. A transmission shaft is provided in the body seat. The transmission shaft is driven and rotated by the driver. The vibration damping connector, The grinding wheel and the locking member are sequentially sleeved on the transmission shaft, so that the vibration-damping connector is connected to the transmission shaft, and the locking member presses the grinding wheel to the vibration-damping connector, and the vibration-damping connector has a housing and a weight ball , The shell has a ring-shaped vibration-damping space, the vibration-damping space surrounds the outer side of the transmission shaft, and the weight ball is located in the vibration-damping space of the shell, and is displaced in the vibration-damping space according to the vibration generated when the grinder is used To reduce vibration.

In the aforementioned vibration-damping portable grinder, the weight beads of the vibration-damping connector are provided in plural.

In the aforementioned vibration-damping portable grinder, the shell of the vibration-damping connector is provided with a ring-shaped base, and both sides of the base are bent in the same direction to extend the first side wall and the second side wall, so that the vibration-damping space is formed on the base, the first Between the side wall and the second side wall, the first side wall is sleeved on the transmission shaft.

In the aforementioned vibration-damping portable grinder, the vibration-damping connector is further provided with an upper cover, and the upper cover covers the other side of the first side wall and the second side wall of the housing away from the base.

The aforementioned vibration-damping portable grinder, wherein the vibration-damping connector is further provided with a pressing portion, the pressing portion is fixed in the first side wall of the housing, and a connecting portion is provided on one side of the transmission shaft, the connecting portion and the pressing The system uses the Morse taper to form a friction fix.

Please refer to the first picture to the fourth picture. It can be clearly seen from the figure that the grinding machine 10 of the present invention is provided with a body seat 1, a vibration-damping connector 2, a grinding wheel piece 3 and a locking fastener 4, among which:

The main body base 1 has a housing 11, a side of the housing 11 is provided with a hand-held portion 12 for the user to hold, and an internal transmission shaft 13 driven by a driver (not shown) is rotated, and the transmission shaft 13 has two A connecting portion 131 and a screw portion 132 are formed on the sides, respectively, and the screw portion 132 is located at the end of the transmission shaft 13.

The vibration-damping connector 2 has a housing 21, a weight bead 22, an upper cover 23, and a pressing portion 24. The housing 21 is provided with a ring-shaped base portion 212, and the first side wall 213 and the The two side walls 214 form a vibration damping space 211 between the base 212, the first side wall 213, and the second side wall 214, and a plurality of weight balls 22 are disposed in the vibration damping space 211, so that the weight balls 22 can Displacement in the damping space 211, the upper cover 23 covers the other side of the first side wall 213 and the second side wall 214 of the housing 21 away from the base 212, and the pressing portion 24 is fixed in the first side wall 213 of the housing 21.

By the way, when the vibration-damping connector 2, the grinding wheel 3 and the locking member 4 are assembled on the transmission shaft 13 of the body seat 1, the vibration-damping connector 2 is first sleeved on the transmission shaft 13 to make the vibration-damping connector 2 The connecting portion 131 of the pressing portion 24 and the transmission shaft 13 is frictionally fixed by the Morse taper, and then the grinding wheel 3 is sleeved on the transmission shaft 13 and the gasket 5 is arranged on the vibration damping connector 2 and the grinding wheel 3 At the same time, the locking member 4 is used to lock the threaded portion 132 of the transmission shaft 13 to break the vibration-damping connector 2 and the grinding wheel 3, so that the transmission shaft 13 simultaneously drives the vibration-damping connector 2 and the grinding wheel 3 to pivot; In addition, when the locking member 4 is attached to the transmission shaft 13, the locking member 4 is further fixed by the fixing element 6.

Please refer to the first figure and the fifth figure. It can be clearly seen from the figure that when the grinder 10 of the present invention vibrates due to use, the weight ball 22 will be displaced in the damping space 211 due to inertial force. And the displacement position will be just opposite to the direction of the vibration force generated by the grinder 10, so as to achieve the counterweight effect to reduce the vibration.

10: Grinding machine 1: body seat 11: Shell 12: Handheld 13: Drive shaft 131: Connection 132: Threaded part 2: Vibration damping connector 21: Shell 211: Damping space 212: base 213: First side wall 214: Second side wall 22: Counterweight beads 23: upper cover 24: Pressing Department 3: Grinding wheel 4: Lock firmware 5: Gasket 6: fixed element

The first picture is the three-dimensional appearance of this creation. The second picture is a three-dimensional exploded view of this creation. The third picture is a three-dimensional exploded view of the original shock-absorbing connector. The fourth picture is a schematic cross-sectional view of this creation. The fifth figure is a schematic view of the use state of the creative vibration reduction connector.

131: Connection

2: Vibration damping connector

21: Shell

211: Damping space

212: base

213: First side wall

214: Second side wall

22: Counterweight beads

24: Pressing Department

3: Grinding wheel

Claims (5)

A vibration-reducing portable grinder. The grinder includes a body seat, a vibration-damping connector, a grinding wheel piece and a locking member. A transmission shaft is arranged in the body seat. The transmission shaft is driven and rotated by the driver. The vibration-damping connector, The grinding wheel and the locking member are sequentially sleeved on the transmission shaft to connect the vibration-damping connector to the transmission shaft, and the locking member presses the grinding wheel to the vibration-damping connector. The vibration-damping connector has a shell and a weight ball. The shell has a ring-shaped vibration-damping space. The vibration-damping space surrounds the outer side of the transmission. The weight ball is located in the shell's vibration-damping space. The vibration generated at the time of displacement in the damping space, thereby reducing the vibration. The vibration-absorbing hand-held grinder as described in claim 1, wherein the weight ball of the vibration-damping connector is provided in plural. The vibration-damping portable grinder according to claim 1, wherein the shell of the vibration-damping connector is provided with a ring-shaped base, and the first side wall and the second side wall extend in the same direction on both sides of the base to form a vibration-damping space Between the base, the first side wall and the second side wall, the first side wall is sleeved on the transmission shaft. The vibration-damping portable grinder according to claim 3, wherein the vibration-damping connector is further provided with an upper cover, which covers the other side of the first side wall and the second side wall of the housing away from the base. The vibration-damping portable grinder according to claim 3, wherein the vibration-damping connector is further provided with a pressing portion, the pressing portion is fixed in the first side wall of the housing, and a connecting portion is provided on one side of the transmission shaft, The connection part and the pressing part are fixed by friction using Morse taper.

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