CN201900859U

CN201900859U - Chalk clamp

Info

Publication number: CN201900859U
Application number: CN2010206566852U
Authority: CN
Inventors: 陈美蓉
Original assignee: SHANGHAI SONGJIANG DISTRICT CHEDUN SCHOOL
Current assignee: SHANGHAI SONGJIANG DISTRICT CHEDUN SCHOOL
Priority date: 2010-12-10
Filing date: 2010-12-10
Publication date: 2011-07-20
Anticipated expiration: 2020-12-10

Abstract

The utility model relates to a chalk clamp, which consists of a chalk sleeve and a clamping piece, wherein the clamping piece is fixed at one end of the chalk sleeve; a sliding chute is fixed on the chalk sleeve; the chalk sleeve is provided with a push rod; and the push rod is movably connected to the sliding chute. By the technical scheme, contact with chalk dust can be effectively reduced, and the chalk clamp is sanitary and convenient; and simultaneously, chalk ends can be utilized, so that waste of chalks is avoided.

Description

A kind of chalk anchor clamps

Technical field

The utility model relates to a kind of teaching aid, and what be specifically related to is a kind of chalk anchor clamps that can effectively utilize chalk.

Background technology

At present, along with the development of teaching aid, the kind of teaching aid is a feast for the eyes.Along with popularizing of some modernizing teaching apparatus, traditional teaching aid progressively withdraws from historical stage, but no matter which kind of degree teaching aid develops into, will not eliminate pattern with the chalk teaching, for example utilize the teaching of projecting apparatus to save many times to teacher, reduced a large amount of writings on the blackboard, but when teacher teaches, can seize on an incident to exaggerate or distort matters, produce new thinking, at this moment can not write again and carry out projection on the projection paper, can only utilize giving lessons of blackboard, chalk is as the educational aid of classroom indispensability, its use amount is huge loathsome, but just cannot continue to use after chalk uses effective length, a large amount of like this chalks that can save fully will be abandoned, and waste a large amount of resources.

The utility model content

The utility model provides a kind of chalk anchor clamps according to above-mentioned deficiency.

For achieving the above object, the technical solution of the utility model is the chalk anchor clamps, form by chalk sleeve, clamping element, wherein clamping element is fixed on the chalk sleeve, described clamping element is fixed on an end of chalk sleeve, be fixed with chute on the chalk sleeve, push rod is set on the chalk sleeve, push rod is movably connected on the chute.

A described end that is fixed with the chalk sleeve of clamping element has the crack.

Described clamping element comprises the sliding sleeve of jaw and tool internal thread, and described jaw is made of the intermediate plate of 2-3 pyramidal structure, and wherein the sliding sleeve front end is tapered, and described sliding sleeve internal thread can be meshed with the external screw thread of the annulus of pen cap front end.

The beneficial effect of technique scheme is: can effectively utilize the chalk head, avoid waste, can avoid being infected with simultaneously a large amount of chalk powders, use health.

Description of drawings

Fig. 1 is the utility model overall structure schematic diagram.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is made specific description.

By shown in Figure 1, the utility model chalk anchor clamps comprise chalk sleeve 2, push rod 1, clamping element 4, and chalk sleeve 2 is hollow structures that inside has push rod 1, and its front end is a clamping element 4, at chalk sleeve 2 and clamping element 4 junctions external screw thread are arranged; Push rod 1 inserts from the rear end of chalk sleeve 2, and described push rod 1 is stuck on the chute 6, can slidably reciprocate; Clamping element 4 is positioned at the front end of chalk sleeve 2, the sliding sleeve 3 that comprises jaw 5 and tool internal thread, described jaw 5 is that the intermediate plate that has three pyramidal structures in crack 7 on chalk sleeve 3 constitutes, sliding sleeve 3 front ends are also tapered, be complementary with the taper of jaw 5, the internal thread of sliding sleeve 3 can be meshed with the external screw thread of the jaw 5 front end annulus of chalk sleeve 2.

Claims

1. chalk anchor clamps are made up of chalk sleeve, clamping element, and wherein clamping element is fixed on the chalk sleeve, it is characterized in that: described clamping element is fixed on an end of chalk sleeve, be fixed with chute on the chalk sleeve, push rod is set on the chalk sleeve, push rod is movably connected on the chute.

2. a kind of chalk anchor clamps according to claim 1 is characterized in that: a described end that is fixed with the chalk sleeve of clamping element has the crack.

3. a kind of chalk anchor clamps according to claim 2, it is characterized in that: described clamping element comprises the sliding sleeve of jaw and tool internal thread, described jaw is made of the intermediate plate of 2-3 pyramidal structure, wherein the sliding sleeve front end is tapered, and described sliding sleeve internal thread can be meshed with the external screw thread of the annulus of pen cap front end.