CN2778581Y - Blackboard eraser - Google Patents

Abstract

The utility model relates to a teaching article, particularly to a split type blackboard eraser which comprises a bottom plate and eraser hairs, wherein and both sides of the bottom plate are respectively provided with grooves. The utility model is characterized in that the eraser hairs are fixed to one side of an eraser hair seat of which the other side is provided with two clamping pins, two clamping grooves are arranged at positions which are corresponding to the two clamping pins on the bottom plate, and positions in the two clamping grooves, which are corresponding to the two clamping pins, are provided with two press keys. Springs are arranged between the press keys and the bottom plate, and a group of positioning grooves are arranged at one side of the bottom plate, and a position at one side of the eraser hair seat, which is corresponding to the positioning grooves, is provided with a group of positioning posts. Because the utility model adopts the technical scheme, the bottom plate and the eraser hairs are connected by the dismountable eraser hair seat. When the eraser hairs of the blackboard eraser can not be used by excessively wearing, the blackboard eraser only needs changing an eraser head, and thus, the cost can be effectively saved.

Description

Novel blackboard eraser

Technical field

The utility model relates to a kind of realia, especially a kind of split type blackboard eraser.

Background technology

At present, blackboard eraser uses in school in a large number, but existing blackboard eraser exists great shortcoming, be base plate with bristle between for fixedlying connected, wear and tear when excessive when the bristle of blackboard eraser like this, generally just can't use, and the base plate of blackboard eraser is generally still good, this just causes huge waste, and this is the shortcoming that exists in the prior art.

Summary of the invention

The purpose of this utility model provides a kind of split type blackboard eraser of effective saving cost, can effectively overcome the shortcoming that exists in the prior art.

The purpose of this utility model is achieved through the following technical solutions, it comprises base plate and snag, the both sides of base plate are respectively arranged with groove, it is characterized in that: snag is fixed on a side of wiper hair seat, the opposite side of wiper hair seat is provided with two bayonet locks, position at corresponding two bayonet locks of base plate is provided with two draw-in grooves, the position of corresponding two bayonet locks is provided with two buttons in two draw-in grooves, between button and base plate, be provided with spring, side at base plate is provided with one group of locating slot, and the position of the locating slot on the corresponding base plate of wiper hair seat one side is provided with one group of reference column.

The utility model is owing to adopt technique scheme, adopts dismountable hair brush base to be connected between base plate and snag, when the snag of blackboard eraser when wearing and tearing excessive can not the use, only need to change and wipe head and get final product, so can effectively save cost.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A cutaway view among Fig. 1.

In the accompanying drawing, 1-base plate, 2-groove, 3-button, 4-snag, 5-wiper hair seat, 6-locating slot, 7-reference column, 8-draw-in groove, 9-bayonet lock, 10-spring.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing, the utility model comprises base plate 1 and snag 4, the both sides of base plate 1 are respectively arranged with groove 2, snag 4 is fixed on a side of wiper hair seat 5, the opposite side of wiper hair seat 5 is provided with two bayonet locks 9, be provided with two draw-in grooves 8 in the position of base plate 1 corresponding two bayonet locks 9, the position of corresponding two bayonet locks 9 is provided with two buttons 3 in two draw-in grooves 8, between button 3 and base plate 1, be provided with spring 10, more firm for what wiper hair seat 5 was fixed, side at base plate 1 is provided with one group of locating slot 6, and the position of the locating slot 6 on the corresponding base plate 1 of wiper hair seat 5 one sides is provided with one group of reference column 7.Locating slot 6 can be two with the number of reference column 7, also can be four.When needs are connected base plate 1 with wiper hair seat 5, only need bayonet lock 9 pushed in the draw-in groove 8 in the base plate 1 and get final product, when snag 4 can not re-use when needing to change, only need pin the button 3 of base plate 1 both sides, make bayonet lock 9 break away from draw-in grooves 8, while pull hair brush base 5 gets final product.Spring 10 between button 3 and the base plate 1 can play button 3 automatically reset effects.Groove 2 persons of being easy to use of base plate 1 both sides hold blackboard eraser.The utility model does not describe part in detail and is known technology.

Claims (1)

1, novel blackboard eraser, it comprises base plate (1) and snag (4), the both sides of base plate (1) are respectively arranged with groove (2), it is characterized in that: snag (4) is fixed on a side of wiper hair seat (5), the opposite side of wiper hair seat (5) is provided with two bayonet locks (9), be provided with two draw-in grooves (8) in the position of corresponding two bayonet locks of base plate (1) (9), the position of corresponding two bayonet locks (9) is provided with two buttons (3) in two draw-in grooves (8), between button (3) and base plate (1), be provided with spring (10), side at base plate (1) is provided with one group of locating slot (6), and the position of the locating slot (6) on the corresponding base plates of wiper hair seat (5) one sides (1) is provided with one group of reference column (7).

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