CN201872451U - Novel chalk holder - Google Patents

Abstract

The utility model discloses a novel chalk holder, which comprises an outer cylinder and an inner cylinder. The lower portion of the outer cylinder is connected with a circular locking hoop fixedly while a press button is arranged at the top of the outer cylinder, the press button is butted to the inner cylinder, the other end of the inner cylinder arranged in the outer cylinder is connected with a plurality of clamping plates, a spring is sleeved to the connection positions of the inner cylinder with the clamping plates, and the clamping plates extend out of the circular locking hoop when the press button is pressed. The novel chalk holder is simple in structure and light in weight, is convenient to use and carry, and is environment-friendly and energy-saving, while hurt to hands and bodies of users in direct contact with chalks can be avoided.

Description

Novel chalk casing

Technical field

The utility model relates to a kind of novel chalk casing.

Background technology

In the epoch of not taking leave of black board teaching, chalk be can't do without.But when using chalk, there are a lot of problems again.Catch and touch chalk, can injure skin and health, also can fracture when writing, and can not use up fully, every chalk causes very big waste with a bit of being lost still arranged to the end, and neither environmental protection does not save the source again.In the face of above problem, I invent a kind of not only environmental protection but also save the source, can be without the direct novel chalk casing of contact of hand.

Summary of the invention

Because the problems referred to above that prior art exists, the purpose of this utility model are to propose a kind of novel chalk sleeve, it can effectively solve the problem that prior art exists.

For achieving the above object, a kind of novel chalk casing that the utility model proposes, comprise urceolus, urceolus bottom and ring lock lock ring are connected and fixed and the top of this urceolus is provided with the pressure hand, press hand to prop up inner core, inner core is located in the urceolus and its other end is connected with some intermediate plates, and is with spring in the junction of inner core and some intermediate plates, by pressing down hand, intermediate plate stretches out the ring lock lock ring.

As further feature of the present utility model, the intermediate plate two sides evenly is provided with some raised lines.

As further feature of the present utility model, the raised line material is a rubber.

As further feature of the present utility model, intermediate plate quantity is 6.

As further feature of the present utility model, the urceolus bottom is provided with a rubber sleeve.

Because adopt above technical scheme, chalk sleeve of the present utility model is simple in structure light and handy again, conveniently use and carry, the injury of having avoided direct contact chalk to bring for hand and health, environmental protection saves the source again.

Description of drawings

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

Among the figure 1, intermediate plate; 2, the ring lock lock ring; 3, spring; 4, inner core; 5, urceolus; 6, press hand; 7, rubber sleeve

The specific embodiment

The utility model is described in further detail with specific embodiment with reference to the accompanying drawings below:

As shown in Figure 1, novel chalk casing of the present utility model, comprise a urceolus 5, urceolus 5 bottoms and a ring lock lock ring 2 are connected and fixed and the top of this urceolus 5 is provided with a pressure hand 6, this pressure hand 6 props up an inner core 4, and inner core 4 is located in the urceolus 5 and its other end is connected with some intermediate plates 1, and is with a spring 3 in the junction of inner core 4 and some intermediate plates 1, by pressing down hand 6, intermediate plate 1 can stretch out ring lock lock ring 2.Intermediate plate 1 two sides evenly is provided with some raised lines, makes chalk be grabbed more firmly, is difficult for slipping out, and the material of this raised line is rubber or plastics or other material; Intermediate plate 1 quantity can be provided with as required, is made as 6 in the present embodiment; In the present embodiment, urceolus 4 bottoms are provided with a rubber sleeve 7, and the Shi Shouhui that writes is more comfortable, and the pen cap are played the effect of protection.

When installing, the end with intermediate plate 1 is placed in the ring lock lock ring 2 sizableness of the internal diameter of this locking strap 2 and chalk major part earlier; And then cover upper spring 3, the annular diameter of this spring 3 is greater than the internal diameter of ring lock lock ring 2 and less than the external diameter of ring lock lock ring 2; This intermediate plate 1 is connected with inner core 4, and the internal diameter of this inner core 4 is greater than the external diameter of chalk and less than the internal diameter of urceolus 5; Then the top from inner core 4 puts urceolus 5, is that this urceolus 5 is connected and fixed with ring lock lock ring 2; On urceolus 5, put at last and press hand 6, supporting inner core 4.

During use, by pressing down hand 6, inner core 4 drives spring 3 and intermediate plate 1 moves down, and intermediate plate 1 opens automatically, and chalk enters intermediate plate 1, unclamps and presses hand 6, because the effect of spring 3, intermediate plate 1 shrinks automatically, holds on to chalk.When chalk outside the tube will use up, by pressing down hand 6, chalk moved certain-length along inner core 4, unclamped and pressed hand 6, and spring 3 sets back, and chalk is by ring lock lock ring 2 and intermediate plate 1 auto lock, finished once to go out a process.Once reciprocal, use up until chalk.

This chalk sleeve can use continuously, and is durable, uses comfortablely, and cost is low.The general domestic thick end of chalk is 10.5mm, and the thin about 8mm of an end, and intermediate plate 1 bore of this novel chalk sleeve is hour less than 8mm is so the butt end of chalk, carefully end can both hold and firmly.This chalk sleeve is light and handy, and is easy to carry.Because material is plastics, rubber, mouldable but also attractive in appearance not only.

But the above-mentioned specific embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises

Claims (5)

1. novel chalk casing, it is characterized in that: comprise a urceolus, a described urceolus bottom and a ring lock lock ring are connected and fixed and the top of this urceolus is provided with a pressure hand, this pressure hand props up an inner core, described inner core is located in the described urceolus and its other end is connected with some intermediate plates, and be with a spring in the junction of described inner core and some intermediate plates, and press described pressure hand, described intermediate plate stretches out described ring lock lock ring.

2. novel chalk casing according to claim 1 is characterized in that: described intermediate plate two sides evenly is provided with some raised lines.

3. novel chalk casing according to claim 2 is characterized in that: described raised line material is a rubber.

4. according to claim 1 or 3 described novel chalk casings, it is characterized in that: described intermediate plate quantity is 6.

5. novel chalk casing according to claim 1 is characterized in that: described urceolus bottom is provided with a rubber sleeve.