CN87203767U - Rotary movable rubber - Google Patents

Abstract

The utility model discloses a rotary movable rubber which is stationary and office supply used for erasing erroneous positions, such as the erroneous word, the erroneous picture, etc., comprising a movable casing and a rubber. The movable casing comprises an outer casing, an inner casing, and a movable cup; the rubber is arranged in the movable casing; when used, only the part used is exposed; when not used, the rubber can totally be retracted into the movable casing, and the surface is not exposed. The utility model has the advantages that the rotary movable rubber which is convenient to hold is not easy to be dirtied or broken. The rotary movable rubber has multi forms; for example, the end part of the inner casing is provided with a brush and is accompanied with a brush sleeve, etc.; the single use type can be installed on pencils; the movable casing can be made of plastic or metallic material.

Description

Rotary movable rubber

The movable rubber of rotary type is a kind of stationery.

Rubber is a kind of stationery that is used for wiping faults such as wrongly written character, wrong picture, rubber commonly used now generally all is flat cuboid, this rubber is because outside its surface all is exposed to, so in use, rubber is made dirty easily, fracture easily, and the volume of rubber is wiped little Hou Na Pinch inconvenience.

The purpose of this utility model is to overcome above-mentioned shortcoming, provides a kind of only exposing in use to use partly, and the time spent can all not return the movable rubber in the active shell again.

The utility model comprises active shell and rubber two partly.Active shell is made up of shell, inner casing and movable cup.Two helicla flutes are arranged on the inwall of shell, the both sides of inner casing have two straight troughs, there are two lugs the both sides of movable cup, these two lugs are embedded in respectively in two straight troughs of inner casing both sides, embed again in two helicla flutes of outer casing inner wall,, make inner casing when the shell transfer is moving when the end that Pinch inner casing, movable cup is being with rubber just to rotate on one side, Yi Bian stretch out or return.Rubber adopts the strip cylinder.

The utility model is compared with rubber commonly used, uses partly because rubber only exposes in use, and the time spent can all not return in the active shell again, outside the surface is not exposed to, so have be difficult for making dirty, easy fracture not, take advantages such as Pinch is convenient.

The utility model can have several forms of implementation.

Embodiment sees Fig. 1, and this is a profile, describes the structure and the operating position of the movable rubber of rotary type in detail below in conjunction with Fig. 1.It comprises active shell and rubber two partly, and active shell is made up of shell 2, inner casing 7, movable cup 5.The inwall of shell 2 has two helicla flutes 3, the both sides of inner casing 7 have two straight troughs 4, there are two lugs 6 both sides of movable cup 5, two lugs 6 are embedded in respectively in two straight troughs 4 of inner casing 7, embed the end 8 that Pinch inner casing 7 in two helicla flutes 3 of shell 2 again, when inner casing 7 is rotated in shell 2, two lugs 6 of movable cup 5 can follow two helicla flutes, 3 motions of two straight troughs 4 and the shell 2 of inner casing 7, and drive activity cup 5 and rubber 1 rotate on one side, Yi Bian stretch out or return, rubber 1 is the strip cylinder, the one end inserts and to be fixed in the movable cup 5, when rubber 1 uses to remaining termination only, can pull down it from movable cup 5 and change.

Two of embodiment sees Fig. 2, this is a kind of movable rubber of the rotary type that uses on the pencil that is contained in, its structure is identical with one of embodiment with operating position, difference is in the style of making point protector in the end of inner casing, use so that be enclosed within on the pencil, and the diameter of active shell and rubber is thinner, and length is also shorter.

Three of embodiment sees Fig. 3, and this is the movable rubber of rotary type that brush is equipped with in a kind of end at inner casing, and brush can be used to brush away the paper scrap under the erasing rubber, more convenient practicality.

Four of embodiment sees Fig. 4, this is a kind of movable rubber of rotary type that the brush cover is arranged, rubber is the time spent not, the cover that has brush can be enclosed within its openend, dust is difficult for into, rubber in use, the cover that has a brush can pull up the end that is enclosed within inner casing in the other direction, it is easy to use that brush is exposed, shown in double dot dash line among Fig. 4.

More than the active shell of the movable rubbers of various rotary types can be with plastics or metal material manufacturing.

Claims (1)

1. A kind of movable rubber of being made up of active shell and rubber of rotary type is characterized in that:

   The described active shell of a comprises shell, inner casing and movable cup, two helicla flutes are arranged on the inwall of shell, and the both sides of inner casing have two straight troughs, and there are two lugs the both sides of movable cup, these two lugs are embedded in respectively in two straight troughs of inner casing both sides, embed again in two helicla flutes of outer casing inner wall.

   The described rubber of b is the strip cylinder.

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