Scraper

1 . A scraper, comprising:

a blade;

a housing, defining a storage cavity therein, wherein the storage cavity has an opening, and a guiding hole is defined in the housing;

a connection member slidably mounted in the storage cavity, wherein the connection member comprises an external portion in which the blade is mounted and an operation button exposed from the guiding hole; the guiding hole extends along a sliding direction of the connection member, the operation button is slidable along a length direction of the guiding hole so as to drive the connection member to move; and the blade is configured to switch among a storage state, an operating state, and a replaceable state;

a limiting member, comprising a first limiting portion and a second limiting portion, wherein when the blade is in the operating state, the first limiting portion and the second limiting portion are mated with each other to limit the connection member and prevent the blade from disengaging from the operating state;

wherein, when the first limiting portion and the second limiting portion relatively move to disengage from each other, the connection member is released, and the blade switches to the replaceable state;

wherein one of the first limiting portion and the second limiting portion is located on the housing, and the other of the first limiting portion and the second limiting portion is located on the connection member;

wherein the connection member is movable between a first position and a second position, when the connection member moves from the first position to the second position, the first limiting portion and the second limiting portion are mated with each other to prevent the connection member from continuing sliding towards the opening; and

wherein the connection member comprises a body portion; the external portion is positioned at one end of the body portion; the second limiting portion comprises a limiting button and a first resilient portion connected to the limiting button; when the connection member is slid to the second position, the limiting button abuts, by a resilient force of the first resilient portion, against the first limiting portion; the first resilient portion is compressed, when the limiting button is pressed, to stop abutting against the first limiting portion.

2 . The scraper according to claim 1 , wherein, when the first limiting portion is located on the housing, and when the second limiting portion is located on the connection member, the limiting button is connected to the body portion.

3 . The scraper according to claim 2 , wherein the first resilient portion comprises two resilient supports that are symmetrically disposed; respective first ends of the two resilient supports are disposed adjacent to each other and are connected to the limiting button; respective second ends of the two resilient supports are disposed away from each other and abut against an inner side of the housing.

4 . The scraper according to claim 2 , wherein a mounting hole is defined in the body portion, the limiting button is mounted in the mounting hole; and the limiting button is slidable in an axial direction of the mounting hole.

5 . The scraper according to claim 2 , wherein the first limiting portion comprises a limiting wall; the limiting wall is arranged on the housing; when the connection member is at the second position, the second limiting portion abuts against the limiting wall to limit the connection member from moving towards the opening.

6 . The scraper according to claim 5 , wherein a through hole is defined in the housing at a position corresponding to the limiting wall, when the connection member is at the second position, the limiting button is exposed out of the housing via the through hole.

7 . The scraper according to claim 1 , wherein the connection member comprises a second resilient portion connected to the operation button; the second resilient portion is formed on the body portion; and the second resilient portion comprises at least one limiting protrusion; an inner side of the housing defines at least two first limiting snap slots snapped with the at least one limiting protrusion; the at least two first limiting snap slots are spaced apart from each other and are distributed along the sliding direction of the connection member;

wherein the at least two limiting snap slots comprises a first snap slot located away from the opening and a second snap slot located near the opening;

when the connection member is at the first position, the at least one limiting protrusion is snapped with the first snap slot located away from the opening;

when the connection member is at the second position, the at least one limiting protrusion is snapped with the second snap slot located near the opening;

the operation button, when being pressed, is configured to enable the at least one limiting protrusion to be disengaged out of the first snap slot or the second snap slot.

8 . The scraper according to claim 1 , wherein the external portion comprises:

a fixation plate and a movable plate,

wherein the fixation plate is fixedly connected to the connection member, or the fixation plate and the connection member are integrally formed;

wherein the movable plate comprises a hinged end and a free end, the hinged end is rotatably connected to the connection member, and the free end is configured to swing around the hinged end, the blade is detachably mounted between the fixation plate and the movable plate.

9 . The scraper according to claim 8 , wherein one of the fixation plate and the movable plate comprises at least one snap protrusion, and the other of the fixation plate and the movable plate comprises at least one snap hole, when the movable plate is swung to the fixation plate, the blade is clamped and fixed by the at least one snap hole and the at least one snap protrusion.