CN201856495U

CN201856495U - Chalk sleeve convenient in use

Info

Publication number: CN201856495U
Application number: CN2010205817020U
Authority: CN
Inventors: 汪靖席
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-28
Filing date: 2010-10-28
Publication date: 2011-06-08
Anticipated expiration: 2020-10-28

Abstract

The utility model provides a chalk sleeve convenient in use, which relates to structural improvement of chalk sleeves, is simple in structure and convenient in use and is flexible. The chalk sleeve convenient in use comprises an outer-layer casing, a middle-layer casing and an inner-layer casing, and is structurally characterized in that the middle-layer casing is arranged in the outer-layer casing, the bottom of the middle-layer casing is connected with a driving shaft of a motor provided with a battery, internal threads are disposed in the middle-layer casing, the inner-layer casing matches with the internal threads of the middle-layer casing by the aid of external threads outside the lower portion of the inner-layer casing, a slider is disposed outside the upper portion of the inner-layer casing and arranged in a chute in the outer-layer casing, and a switch for controlling the motor is arranged on the surface of the outer-layer casing.

Description

The convenient chalk sleeve that uses

Technical field:

The utility model is divided by International Patent Classification (IPC) (IPC) and is belonged to operation; Department of Transportation, printing branch is write or drawing appliance, and the big class of office appliance is write or drawing article, the assistant product group of writing or draw, the clamper of writing implement or connector; Big group of the protector of reservoir tip, wax crayon or the little technical group field of chalk clamper; In particular, relate to a kind of improvement of chalk sleeve structure.

Background technology:

At present, the technology about wax crayon or chalk clamper existing and that once had has been made very fruitful effort to the convenient chalk sleeve that uses, and also once designs many outstanding technical schemes.As declaring of the Decree of Patent Office of China in 2010 by the fourth beautiful jade, Granted publication number is CN201380668Y, China Patent No. (ZL) is: No. 200920084282.2 utility model, title are the utility model patents of " novel dual-purpose chalk sleeve ", the technical scheme that is adopted.Technical elements at wax crayon or chalk clamper, be of great value innovation and creation, it has reached and has prevented that chalk dust is stained with to hand, and some revise the purpose of local less writing on the blackboard also to can be used to wiping wrongly written character, punctuation mark etc., but it still has many deficiencies:

It can't solve chalk sleeve and use inconvenience, the problem of the flexible difficulty of chalk.

Summary of the invention:

The utility model is exactly at the problems referred to above, and a kind of chalk sleeve simple in structure, easy to use, retractile is provided.

For reaching above-mentioned purpose of the present utility model, the utility model adopts following technical scheme, the utility model comprises outer casing, middle level housing and internal layer shell, its structural feature middle level housing is arranged in the outer casing, the bottom of middle level housing links to each other with the driving shaft of the motor with battery, is provided with internal thread in the housing of middle level; Internal layer shell matches by the internal thread of the external screw thread outside its underpart with the middle level housing; The top of internal layer shell is outside equipped with slide block, and slide block is arranged in the interior slideway of outer casing; The outer casing surface is provided with the switch of control motor.

The beneficial effects of the utility model:

1, simple in structure:

Middle level of the present utility model housing is arranged in the outer casing, and the bottom of middle level housing links to each other with the driving shaft of the motor with battery, is provided with internal thread in the housing of middle level; Internal layer shell matches by the internal thread of the external screw thread outside its underpart with the middle level housing; The top of internal layer shell is outside equipped with slide block, and slide block is arranged in the interior slideway of outer casing; The outer casing surface is provided with the switch of control motor; Its member is few, and the utility model is simple in structure thus.

2, easy to use:

Because the driving shaft of motor of the present utility model links to each other with the middle level housing, can drive the middle level housing rotates, interact by the internal thread of middle level housing and the external screw thread of internal layer shell, internal layer shell is upwards risen, do not need chalk to be extracted with hand, method of operating is simple, and the utility model is easy to use thus.

3, capable of expansion and contraction:

Because outer casing of the present utility model is outside equipped with the switch of control motor, can freely control the direction of rotation of middle level housing by switch, thereby freely control moving up and down of internal layer shell; Reach retractile purpose.

Description of drawings:

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

Fig. 2 is a user mode schematic diagram of the present utility model;

1 is that switch, 2 is that battery, 3 is that motor, 4 is that driving shaft, 5 is that outer casing, 6 is that middle level housing, 7 is that internal layer shell, 8 is that slide block, 9 is that slideway, 10 is that chalk, 11 is that internal thread, 12 is that external screw thread, 13 is solar panels in the accompanying drawing.

The specific embodiment:

The utility model comprises outer casing 5, middle level housing 6 and internal layer shell 7, and middle level housing 6 is arranged in the outer casing 5, and the bottom of middle level housing 6 links to each other with the driving shaft 4 of the motor 3 with battery 2, is provided with internal thread 11 in the middle level housing 6; Internal layer shell 7 matches by the internal thread 11 of the external screw thread outside its underpart 12 with middle level housing 6; The top of internal layer shell 7 is outside equipped with slide block 8, and slide block 8 is arranged in the slideway 9 in the outer casing 5; Outer casing 5 surfaces are provided with the switch 1 of control motor 3.

Outer casing 5 is outside equipped with solar panels 13; Solar panels 13 can be battery 2 chargings.

During use, chalk 10 can be inserted in the internal layer shell 7, move up and down by switch 1 control internal layer shell 7 then, easy to use.

Above content is to further describing that the utility model is done in conjunction with concrete preferred implementation; can not assert that concrete enforcement of the present utility model is confined to these explanations; for the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the definite protection domain of claims that the utility model is submitted to.

Claims

1. the convenient chalk sleeve that uses, comprise outer casing (5), middle level housing (6) and internal layer shell (7), it is characterized in that middle level housing (6) is arranged in the outer casing (5), the bottom of middle level housing (6) links to each other with the driving shaft (4) of the motor (3) with battery (2), is provided with internal thread (11) in the middle level housing (6); Internal layer shell (7) matches by the internal thread (11) of the external screw thread outside its underpart (12) with middle level housing (6); The top of internal layer shell (7) is outside equipped with slide block (8), and slide block (8) is arranged in the interior slideway (9) of outer casing (5); Outer casing (5) surface is provided with the switch (1) of control motor (3).

2. the convenient chalk sleeve that uses according to claim 1 is characterized in that outer casing (5) is outside equipped with solar panels (13).