JPH0636763U - Grinder wheel guard holding structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a wheel grinder holding structure for a disc grinder or a similar electric tool, and its purpose is to easily hold a wheel guard and position the wheel guard without using a tool. To improve workability. [Structure] The ring 1 is tightened, and the foil guard 3 is held on the packing land 4 by the frictional resistance of the elastic body 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wheel grinder holding structure for a disc grinder or a similar electric tool.

[0002]

[Prior art]

 When using a disc grinder, etc., it is necessary to install a wheel guard that covers more than half the circumference of the toy, and it is necessary to change the wheel guard installation position according to the work and application. It is a power tool with a high frequency.

Conventionally, attachment / detachment of a wheel guard such as a disc grinder requires the use of a spanner or a driver, which is troublesome and inconvenient.

[0004]

[Problems to be solved by the device]

 The conventional wheel guard holding structure requires tools such as a spanner and a screwdriver, which is troublesome and troublesome, and these tools are easily lost.

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to carry out without using a tool in the process of holding a wheel guard such as a disc grinder.

[0006]

[Means for Solving the Problems]

 The above object can be achieved if the wheel guard can be held without using a special tool such as a spanner or a screwdriver.

Therefore, a wheel guard may be provided on the outer peripheral surface of the packing land by sandwiching a ring contacting the hacking land and the inclined surface and an elastic body for stopping the rotation of the wheel guard in the tightening direction so as to be easily tightened by hand. .

[0008]

[Action]

 In the wheel guard holding structure configured as described above, by turning the ring that is in contact with the packing land and the inclined surface by hand, the wheel guard can be tightened and the wheel guard can be held without using a tool. You can do it. In addition, by sandwiching the elastic body between the ring and the wheel guard, the elastic body (which causes elastic deformation and increases the contact area) prevents the ring from easily loosening due to frictional resistance, and the wheel guard Can hold.

[0009]

【Example】

 1 and 2 show an embodiment of the present invention, and FIGS. 3, 4 and 5 show an applied embodiment of the present invention.

As shown in FIGS. 1 and 2, a ring 1 fitted on the outer periphery of the packing land 4 by a screw portion 7, an elastic body 2 press-contacted with the ring 1 in the direction of the tooth 6, and an elastic body 2 press-contacted with the elastic body 2. There are provided a wheel guard 3 and a packing land-wheel guard abutting portion 5 that comes into contact with the wheel guard.

When holding the wheel guard 3 at an arbitrary position, the ring 1 is screwed in the direction of the tooth 6 to press the elastic body 2 and the wheel guard 3 toward the wheel guard abutting portion 5 of the packing land. The friction guard can hold the wheel guard. In this case, the elastic body 2 causes a large frictional resistance with respect to the ring 1 and the wheel guard 3, and the wheel guard can be sufficiently held with a tightening force that is such that the ring 1 is rotated by hand.

FIG. 3 shows an application example of the present invention when the abutting surface portion 7a between the ring 1a and the packing land 4a is an inclined surface.

The packing land 4 a and the ring 1 a that are in contact with each other by the abutting surface inclined portion 7 a, the elastic body 2 that presses against the ring 1 a in the direction of the tooth 6, the wheel guard 3 that presses against the elastic body 2, and the wheel guard 3 There is provided a packing land-wheel guard abutting portion 5 that abuts against. Further, the flat surface portion 8 is provided at the terminal end portion of the inclined portion 7a.

When the wheel guard 3 is locked at an arbitrary position, the elastic body 2 and the wheel guard 3 are rotated by rotating the ring 1 a in the direction in which the elastic body 2 and the wheel guard 3 are tightened, and the packing land-wheel guard abutting portion. The foil guard can be locked by pressing friction resistance in the direction of 5. In this case, the elastic body 2 causes a large frictional resistance with respect to the ring 1a and the wheel guard 3, and the wheel guard can be sufficiently locked with a tightening force such that the ring 1 is rotated by hand. However, slippage is prevented by the flat surface portion 8 at the terminal end of the inclined portion 7a.

FIG. 4 shows an application example of the present invention in which the ring 1 and the packing land 4b are fitted by the screw portion 7.

As shown in FIG. 4, a ring 1 is provided, which is in contact with the packing land 4 b, is in contact with the wheel guard 3, is in pressure contact with the wheel guard 3, and is in elastic contact with the elastic body 2, and is in contact with the elastic body 2.

When the wheel guard 3 is locked at an arbitrary position, the wheel 1 and the elastic body 2 are pressed against the packing land 4b by screwing the ring 1 in the direction opposite to the toy 6, and the wheel guard 3 is friction-resistant. Can be locked. In this case, the elastic body 2 causes a large frictional resistance with respect to the ring 1 and the wheel guard 3, and the wheel guard can be sufficiently locked with a tightening force such that the ring 1 is rotated by hand. FIG. 5 shows one embodiment of the present invention in which the packing land 4C is provided with the inclined groove 7b and the ring 1b is provided with the convex portion 7C.

As shown in FIG. 5, a ring 1b provided with a convex portion 7c that fits the inclined groove 7b is inserted into the packing land 4c provided with the inclined groove 7b and the mounting groove 7d from the mounting groove 7d. There are provided an elastic body 2 in pressure contact with the ring 1b, a wheel guard 3 in pressure contact with the elastic body 2 and a packing land-wheel guard abutting portion 5 in contact with the wheel guard. Further, the flat surface portion 8a is provided at the terminal end portion of the inclined groove 7b.

When the wheel guard 3 is locked at an arbitrary position, the ring 1b is rotated in a direction in which the elastic body 2 and the wheel guard 3 are tightened, so that the elastic body 2 and the wheel guard 3 are brought into contact with the packing land-wheel guard abutting portion. In this case, the wheel guard can be locked by pressing friction resistance in the direction of 5, and in this case, the elastic body 2 causes a large friction resistance with respect to the ring 1b and the wheel guard 3, and the ring 1 is manually pressed. The wheel guard can be locked with sufficient tightening force.

However, the flat surface 8a at the end of the inclined groove 7b prevents slippage.

[0021]

[Effect of device]

 According to the present invention, since the wheel guard can be held or rotated only by rotating the ring in the direction in which the wheel guard is held and by loosening the ring, a tool for holding or rotating the wheel guard can be used. Since it is unnecessary and the structure is simple in design, the operation can be simplified.

[Brief description of drawings]

FIG. 1 is a front view of a disc grinder with a wheel guard and a tooth according to an embodiment of the present invention.

FIG. 2 shows an embodiment in which a packing land and a ring are fitted by a screw, and a wheel guard, an elastic body and a ring are provided in this order from the tooth side.

[FIG. 3] Abutment surfaces of the packing land and the ring are brought into contact with each other by an inclined surface, and a wheel guard, an elastic body,
An example in which the rings are provided in this order is shown.

FIG. 4 shows an embodiment in which a packing land and a ring are fitted with a screw, and a ring, an elastic body, and a wheel guard are provided in this order from the tooth side.

FIG. 5 shows an embodiment in which a packing groove is provided with an inclined groove for fitting with a ring, and a wheel guard, an elastic body, and a ring are provided from the tooth side.

[Explanation of symbols]

1 is a ring, 2 is an elastic body, 3 is a foil guard, 4 is a packing land, 5 is a wheel guard abutting portion, 6 is a tooth, 7 is a threaded portion, 1a is an abutting surface inclined ring, 4a is an abutting surface inclined packing land, 7a is an inclined portion, 4b is a packing land, 1b is a ring, 4c is a packing land, 7b is an inclined groove, 7c is a convex portion, 7d is a mounting groove, 8 is a flat surface portion, and 8a is a flat surface portion.

Claims (1)

[Scope of utility model registration request] 1. A spindle to which power is transmitted from a drive source installed in a housing through a speed reducer, a tooth washer fixed to the spindle by a wheel washer and a wheel nut, and a wheel guard covering almost half the circumference of the tooth guard. When,
In a retaining structure of a wheel guard having an elastic body that makes pressure contact with the outer peripheral surface of the packing land on the packing land, and a ring that makes pressure contact with the elastic body, the ring contacts the packing land with an inclined surface, and the ring seals the ring. By rotating on the outer peripheral surface of the gland, the force in the circumferential direction is converted into a component force that pushes the elastic body on the inclined surface, and the pressing force and frictional force of the elastic body holds the wheel guard without using a tool. Grinder wheel guard holding structure characterized by