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Receiving type blackboard

A blackboard and gear technology, applied in the blackboard field, can solve the problems of inconvenient use, inconvenient use, and inability to use the blackboard and projection screen at the same time

Inactive Publication Date: 2018-09-28
ZUNYI JINHONG METAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are the following problems in the above-mentioned scheme: because the blackboard is stretched back and forth, when the projection screen falls, the projection screen will cover the blackboard, so that the blackboard and the projection screen cannot be used at the same time, which brings inconvenience to the users. Every time the blackboard is retracted and reset, it is necessary to take out the sundries stored in the cabinet, which is inconvenient to use

Method used

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  • Receiving type blackboard
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  • Receiving type blackboard

Examples

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Embodiment Construction

[0023] The present invention will be described in further detail below by means of specific embodiments:

[0024] The reference signs in the drawings of the description include: blackboard frame 1, blackboard 2, pulley 3, motor 4, first gear 5, engaging part 6, second gear 7, engaging part 8, tooth chain 9, third Gear 10, fourth gear 11, first bevel gear 12, second bevel gear 13, rotating shaft 14, cloth rolling chamber 15, cloth drop hole 16, fifth gear 17, cleaning rod 18, first air hole 19, fixing rod 20 , the second air hole 21, the negative pressure vane 22, the exhaust port 23, the collection hole 24, and the collection box 25.

[0025] Such as figure 1 with figure 2 As shown, the storage type blackboard includes a blackboard frame 1 and a blackboard 2. A cloth rolling room 15 is welded on the blackboard frame 1. The cloth rolling room 15 includes a rotating shaft 14 and a projection screen wound on the rotating shaft 14. The bottom of the cloth rolling room 15 is Th...

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Abstract

The invention belongs to the technical field of blackboards, and particularly relates to a receiving type blackboard. The receiving type blackboard comprises a blackboard frame and a blackboard slidably connected into the blackboard frame. A cloth rolling chamber is fixely arranged on the blackboard frame, and the cloth rolling chamber comprises a rotating shaft and a projection screen. A gear tooth is arranged at the bottom of the blackboard, a motor is slidably connected to the blackboard, and the output shaft of the motor is fixedly connected with a first gear, the first gear meshes with the blackboard, and the first gear is provided with a clamping part. A second gear, a third gear and a fourth gear are further fixedly arranged in the blackboard frame, and a clamping fit part is arranged on the second gear, a toothed chain is connected between the second gear and the third gear, the fourth gear meshes with the toothed chain, the fourth gear is coaxially provided with a first bevelgear, and a second bevel gear meshes with the first bevel gear. The second bevel gear is coaxially connected with a rotating shaft, and a fifth gear which meshes with the blackboard is fixedly arranged on the blackboard frame. According to the receiving blackboard, the projection screen and blackboard can be used simultaneously, and teaching aids and other sundries can be stored in the blackboardframe to facilitate teaching.

Description

technical field [0001] The invention belongs to the technical field of blackboards, and in particular relates to a storage type blackboard. Background technique [0002] The blackboard is a commonly used teaching tool in school teaching and training, and has an irreplaceable role. The traditional blackboard is fixed on the wall and cannot move forward or backward. Some teaching aids can only be placed on the desk or taken from the teaching aid room by the teacher before class, which blocks the students' sight and is cumbersome to use. At the same time, the function of the blackboard is single, which is not suitable for the current multimedia teaching. [0003] Chinese patent CN201420455521.1 discloses a multi-functional blackboard display cabinet, which includes a rectangular cabinet body, a blackboard and an expansion device. The front end of the rectangular cabinet body is open, and the blackboard is installed in conjunction with the front opening. Bracket, lead screw an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L1/04B43L21/02G03B21/58
CPCB43L1/04B43L21/02G03B21/58
Inventor 林波
Owner ZUNYI JINHONG METAL EQUIP