CN2655371Y

CN2655371Y - Improved integrated demonstrating board for hanging chart and writing

Info

Publication number: CN2655371Y
Application number: CN 03278291
Authority: CN
Inventors: 刘仁南
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-31
Filing date: 2003-08-31
Publication date: 2004-11-10
Anticipated expiration: 2013-08-31

Abstract

An improved integral picture hanging writing displaying board used for an exhibition, an ad or teaching, which can rolled and storage longer writing face or a hanging picture, and can continuously display the writing face or the hanging picture rolled and memorized on a rolling shaft, comprising a hollowed board, a shaft rack plate, an upper and a lower rolling shaft and a dynamic reducing device, wherein two sides of the hollowed plate are equipped with the shaft rack plate, the upper and the lower end of the hollowed plate are equipped with the rolling shaft, the inside of the hollowed plate is equipped with the dynamic reducing device, a dynamic output gear on the reducing device is engaged with a gear on one end of the rolling shaft, and two ends of a longer soft writing face or a hanging picture are respectively rolled and memorized on the upper and the lower two rolling shafts. The controlling of the circuit direction can make the upper rolling shaft or the lower rolling shaft rolled, thereby making the writing face or the hanging picture memorized on the upper rolling shaft or the lower rolling shaft.

Description

The integrated wall chart writing demonstration board of modified

Affiliated technical field

The utility model relates to a kind of presentation device of wall chart.

Background technology

At present, in a large amount of occasions of using wall chart, there is not a kind of better equipment to realize the continuous displaying of wall chart; A general panel or billboard show that the content area is no more than the area of panel or billboard; Serving as the role of " can wipe wall chart " at medium and small black (in vain) plate of teaching, still be extensive use of, but institute's content area of writing also can be above little area of deceiving (in vain) plate.This " can wipe wall chart " organically do not combine with wall chart.Integrated wall chart writing demonstration board (ZL 98217146.3) is though can address the above problem, and its inner reduction gear is complicated, and by chain drive, external accessory is more between reduction gear and the scroll bar, and profile is not attractive in appearance, and manufacturing cost is higher.

Summary of the invention

The purpose of this utility model is to avoid the deficiency in the background technology, optimizes and simplify the inside and outside structure of integrated wall chart writing demonstration board, increases its function.

The purpose of this utility model can be achieved through the following technical solutions: at the both sides of cored slab dress pedestal plate, respectively adorn the scroll bar of a band telescopic shaft by the pedestal plate at the upper and lower end of cored slab, telescopic shaft is inserted in the axis hole of pedestal plate, the two ends cogged of scroll bar; At the inside of cored slab dress micromotor and reduction gear, the power output gear of reduction gear is meshed with gear on the scroll bar, make reduction gear can drive different scroll bar rotations according to the different rotation directions of motor; Long white soft writing surface or the two ends of the long multiple hanging chart that connects together roll up respectively and exist on upper and lower two scroll bars.The integrated wall chart writing demonstration board of modified by this forecast scheme configuration, its most of writing surface or wall chart volume exist on two scroll bars, when motor drives a scroll bar rotation by reduction gear, writing surface or wall chart can constantly be rolled up and exist on this scroll bar, and writing surface or wall chart between two scroll bars can be for writing or showing.

The utility model is compared the above-mentioned background technology and had following advantage: inner reduction gear is simplified, and outside do not have other annex except that scroll bar, good looking appearance, and the loading and unloading of scroll bar are easy, and the cost of product has obtained reduction.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a front view of the present utility model.

Fig. 2 is the cut-away view that Fig. 1 removes writing surface (1) and thin plate (2).

Fig. 3 is the structural drawing of scroll bar one end.

Fig. 4 is the view of part reduction gear.

Fig. 5 is the front view of cored slab.

Fig. 6 is the left view of cored slab.

Fig. 7 is the front view of pedestal plate.

Embodiment

Referring to Fig. 1 and Fig. 2, the general structure of the integrated wall chart writing demonstration board of modified is: at the left and right sides of cored slab dress pedestal plate (3), respectively adorn a scroll bar at the upper and lower side of cored slab, go up dress dynamic retarding device in the inside of cored slab in pedestal plate (3).

Referring to Fig. 5 and Fig. 6, cored slab is made of thin plate (2), thin plate (4) and crossbeam (19).Thin plate (2) and thin plate (4) can adopt existing blackboard or blank material.Thin plate (2) also can adopt transparent plastic sheet.

Referring to Fig. 2 and Fig. 3, scroll bar is made of central siphon (5), gear (6), telescopic shaft (7), spring (21).One side of gear (6) has an open column, is used for insertion and solid in central siphon (5); There is axis hole at the center of gear (6), and telescopic shaft (7) is inserted in the axis hole of gear (6); In the open column of gear (6), telescopic shaft (7) is being fixed spring (21).The method that scroll bar is installed on the integrated wall chart writing demonstration board of modified is: the telescopic shaft of compression coil end shaft (7), scroll bar can be put between two pedestal plates (3), make the axis hole on telescopic shaft (7) the aiming axis frame plate (3), telescopic shaft under the effect of spring (21) (7) is sprung in the axis hole on the pedestal plate (3).From the method that the integrated wall chart writing demonstration board of modified takes off be scroll bar: the telescopic shaft of compression coil end shaft (7), shift out scroll bar simultaneously.

Referring to Fig. 2 and Fig. 4, the dynamic retarding device is contained on the pedestal plate (3), it has three transmission shafts (11 of upper, middle and lower, 13,18), in a gear wheel (14) is housed on the transmission shaft (13), the two ends of transmission shaft have external thread, gear wheel (14) is meshed with pinion wheel (15) on the DC micromotor (17).The first half of reduction gear dress is such: upward transmission shaft (11) is equipped with the rotary joint (12) that has internal thread adjacent to an end of middle transmission shaft (13), and the other end is equipped with pinion wheel (10); Pinion wheel (10) is meshed with tumbler gear (9), and tumbler gear (9) is to be combined by a bigger side gear and a less cylindrical gear, and what be meshed with pinion wheel (10) is the side toothed portion; Be gear (8) between the gear (6) on tumbler gear (9) and the scroll bar, the cylindrical gear of tumbler gear (9) is meshed with gear (8), and gear (8) is meshed with gear (6) again.The latter half of reduction gear and the first half are similar.

When motor (17) rotates, the pinion wheel on the motor (15) engaged transmission gear wheel (14).If motor driven gear (14) rotates counterclockwise, then transmission shaft (13) is separated with rotary joint (16), transmission shaft (13) is screwed in rotary joint (12) simultaneously, so pinion wheel (10) engaged transmission tumbler gear (9) coaxial with rotary joint (12), tumbler gear (9) engaged transmission gear (8), gear (8) engaged transmission gear (6), thus scroll bar is rotated.Otherwise if motor driven gear (14) clockwise rotates, then transmission shaft (13) is separated with rotary joint (12), and transmission shaft (13) is screwed in rotary joint (16) simultaneously, thereby scroll bar is rotated.Therefore, as long as the rotation direction of control motor just can make scroll bar rotate, and make down scroll bar be in state free to rotate; Change the rotation direction of motor, scroll bar is rotated, and make scroll bar be in state free to rotate.The rotation direction of motor can change sense of current by gauge tap to be controlled, and gauge tap can be contained on the pedestal plate (3).

External thread on above-mentioned rotary joint and the transmission shaft also can switch.

Referring to Fig. 2, can adorn electric light (20) in the inside of cored slab.When electric light was housed, thin plate (2) should adopt transparent plastic sheet.

The used writing surface 1 of the integrated wall chart writing demonstration board of modified should adopt soft blank material.

Claims

1. integrated wall chart writing demonstration board of modified, it is made of cored slab, pedestal plate, scroll bar and dynamic retarding device, it is characterized in that: pedestal plate (3) is equipped with in the left and right sides of cored slab, the upper and lower side of cored slab is equipped with scroll bar, the dynamic retarding device is equipped with in the inside of cored slab, the power output gear of reduction gear (8) is meshed with the gear (6) of scroll bar one end, and the two ends than long soft writing surface or wall chart (1) are rolled up respectively and existed on upper and lower two scroll bars.

2. the integrated wall chart writing demonstration board of modified according to claim 1 is characterized in that: scroll bar be at central siphon (5) two ends cogged (6), insert telescopic shaft (7) at the central shaft hole of gear (6) and form.

3. the integrated wall chart writing demonstration board of modified according to claim 2 is characterized in that: the side at gear (6) has a hollow cylinder that can insert in the central siphon (5), has a spring (21) to be fixed on the telescopic shaft (7) in the hollow cylinder.

4. the integrated wall chart writing demonstration board of modified according to claim 1 is characterized in that: three transmission shafts of upper, middle and lower are arranged in the dynamic retarding device, and the abutting end of two adjacent transmission shafts has internal thread and external thread respectively, and both can be screwed in together.

5. the integrated wall chart writing demonstration board of modified according to claim 1 is characterized in that: electric light (20) is housed in cored slab.