WO2008061426A1

WO2008061426A1 - Quickly replaceable painted scroll with spiral power spring

Info

Publication number: WO2008061426A1
Application number: PCT/CN2007/002697
Authority: WO
Inventors: Xiaohu Huang
Original assignee: Xiaohu Huang
Priority date: 2006-11-21
Filing date: 2007-09-11
Publication date: 2008-05-29
Also published as: CN200966501Y

Abstract

A quickly replaceable painted scroll with spiral power spring, around which a painting is to be coiled, includes a scroll rotating mechanism and is disposed in a casing (9). The scroll also includes a drum (7) and two scroll caps (1, 1') at the ends of the drum (7). The drum (7) has a structure in form of hollow tube. The scroll rotating mechanism includes a spiral power spring tightening mechanism and a unidirectional self-locking mechanism which is composed of a pawl and a ratchet. The tightening mechanism is configured such that one end of a spiral power spring (4) is connected to the unidirectional self-locking mechanism and the other end to a spiral power spring box (6). The spiral power spring box (6) is mounted on one side of the scroll cap (1) at which the unidirectional self-locking mechanism is disposed.

Description

Easy-change springwork elastic drawing shaft Technical field

The utility model relates to an easy-to-change springwork elastic drawing shaft, which relates to an exhibition display device, in particular to a drawing axis which is easy to stretch. Background technique

The so-called traditional roll-up is a popular portable display device in recent years. Its structure mainly includes a casing, the inside can be used for loading the picture, and the lower end of the picture is fixed in the casing with a roller with elastic stretching device. On the upper side of the painting, the upper end of the painting is fixed on the hanging drawing bar for drawing. In use, the outer casing is used as the base, and a vertical rod is inserted into the hole of the outer casing to fix the picture, and the hanging picture bar is fixed on the vertical dome. The elastic device inside the outer casing tightens the painting, and the painting is used to draw the painting into the shell. It is an easy to carry and easy to display device. The concept of the elastic device is to roll up a picture to the eye by a torsion spring mounted in the drawing shaft.

The disadvantages are as follows: 1. When the customer changes the painting, the old painting needs to be removed from the drawing axis and the hanging painting strip, and the new painting is replaced, which is easy to cause misoperation, completely releasing the pre-tightening elastic force, and losing the roll-up function. It is also possible to damage the picture and the screen assembly process is extremely inconvenient. 2. The traditional type of roll-up treasure should be spring-loaded at the factory, so that the customer can install the picture, and the picture can be collected into the outer casing for transportation and carrying. However, the pre-tightening elasticity of the screen is fixed, and it is difficult for the customer to adjust the elasticity due to the length of the screen production. The short picture will be too loose, and the long picture will be too tight and the drawing will be too laborious. 3. The stress value curve of the torsion spring changes very much, and it is difficult to control the tension of the picture, and also affects the effect of the picture. Summary of the invention

The technical problem to be solved by the utility model is to provide an easy-to-change spring-loaded elastic drawing axis, which can achieve the purpose of adjusting the elastic force by using the spring, and the one-way locking of the drawing axis, so that the drawing axis can be easily taken. The customer can easily achieve the purpose of changing painting by changing the drawing axis, which is convenient, safe and fast.

The technical problem of the utility model can be solved by the following technical solution: an easy-change spring-spring elastic drawing axis, the picture is rolled on the drawing axis, and comprises a casing, a drawing axis and a drawing axis rotating mechanism disposed in the casing, and the drawing axis is The shaft body and the shaft core cover at both ends of the barrel body, wherein the barrel body is a hollow tube body structure, and the drawing shaft rotating mechanism is composed of a spring tightening mechanism and a one-way self-locking constituted by a pawl and a ratchet The spring composition is characterized in that the spring winding mechanism is fixed at one end of the spring to the one-way self-locking mechanism, the other end is fastened to the barrel, and the barrel is fixed to the shaft cover provided with the one-way self-locking mechanism. side.

The utility model provides a one-way locking mechanism, in particular: the one-way self-locking mechanism is arranged on one side of the drawing shaft, the shaft core cover is provided with a middle hole, and two or four holes are arranged around the middle hole More than two ratchet teeth are provided with a pawl on the inner side of the end barrel, and the ratchet engages with the pawl.

Based on the above solution, the pawl has two or more ratchet teeth corresponding to the ratchet teeth on the shaft core cover, and one side of the pawl is cast with a square shaft passing through the middle hole of the shaft core cover. The other side is provided with a top rod which is abutting against the spring. The top rod has a slit, and one end of the spring is fixed in the slit. When a special tool is used to rotate on the square axis of the pawl, due to the interaction of the ratchet and the pawl, the spring will only tighten and will not relax, and will act as a spring.

In order to enable the pawl to be reset in time, the ejector pin abuts a spring disposed in the barrel to displace the pawl in the axial direction.

Based on the above solution, the one-way self-locking mechanism is adjusted by a rotary wrench, and includes a square hole column, a wrench and a rib, wherein the square hole column is fixed to the inner side of the outer casing end cover, the wrench is set on the square hole column, and the rib is disposed at the root of the square hole column. The wrench is provided with a bevel, the bevel interacts with the rib when the wrench rotates, and the wrench is rotated to lock the pawl radially, and at the same time push the pawl to move axially, causing the pawl and the ratchet to come out of contact. At this time, the drawing axis can be freely rotated inside the casing, so that the screen can be pulled out easily and quickly when winding up.

In order to make the square shaft easier to insert into the square hole provided at the end of the square hole column, the wrench is provided with a guiding groove, and the square shaft on the pawl is inserted into the square hole through the guiding groove.

Based on the above solution, the barrel has a "convex" shaped inner cavity, the spring is located in a convex chamber at the bottom thereof, and is abutted by the pawl ejector, and a spring is also provided on the outer shell of the barrel. The hole, the spring and the pawl are set in the inner cavity of the barrel, one end of the spring is fixed in the slit of the pawl ejector, and the other end is fastened in the u-shaped hole. When the drawing shaft needs to be taken out of the casing for changing the painting, the spring acts as a resetting force, and moves axially against the pawl, returns to the original position, so that the pawl engages with the ratchet, and the drawing axis is in a one-way self-locking state. .

A baffle plate is arranged on the pawl ejector pin, and the ejector pin is sequentially provided with a baffle plate and a spring to prevent the spring from catching the pawl. The pawl is set in a barrel. The one-way locking mechanism is combined with the spring rotating mechanism to be compact. The barrel and the barrel are closely matched on the side of the shaft cover of the fixed one-way self-locking mechanism, so that the barrel does not collide with the barrel There is relative movement.

The advantages of the utility model are:

1. The drawing axis has a one-way self-locking function, which is especially convenient when changing pictures;

2. The one-way self-locking mechanism is easy to open and easy to use;

3, the clockwork mechanism is stable, drawing, and drawing is smooth and labor-saving;

4. The components are simple in structure and easy to install. DRAWINGS

Fig. 1 is a schematic view showing the exploded structure of the spring-type elastic shaft member of the easy-change type of the utility model.

2 is a partially exploded perspective view of the elastic-type shaft of the easy-change spring of the present invention controlled by a wrench. 3 is a cross-sectional view of the easy-change spring-spring elastic drawing shaft and the outer casing of the present invention.

Description of the numbers in the drawings

1 , a shaft core cover 11 a middle hole

2 - ratchet

3—pawl 31—ratchet 32—square axis

33—Pole 331—Slit

4 springs 5 - spring

6—spring box 61—convex chamber

62—U-shaped hole

7—Body 8—Baffle 9-shell

10—square hole column 101—square hole

12—wrench 121—slope 122—guide groove

13 - ribs 14 a picture 15 - bushings

FIG. 1 is a schematic exploded view of the elastic-type shaft member of the easy-to-change spring of the present invention, and FIG. 2 is a partially exploded structural view of the spring-type elastic shaft of the easy-to-change spring of the present invention controlled by a wrench; and FIG. A cross-sectional view of the easy-to-change spring-loaded elastic drawing shaft and outer casing is shown:

An easy-to-change spring-loaded elastic drawing axis, the picture 14 is wound on the drawing axis, including the outer casing 9, and is disposed outside The drawing shaft and the drawing shaft rotating mechanism in the shell 9 are composed of a barrel body 7 and a shaft core cover 1 and Γ at both ends of the barrel body, wherein the barrel body 7 is a hollow tube body structure, and the drawing shaft rotating mechanism is received by a spring The fastening mechanism is composed of a one-way self-locking mechanism composed of the pawl 3 and the ratchet 2. The spring winding tightening mechanism of the utility model is that one end of the spring 4 is fixed on the one-way self-locking mechanism, the other end is fastened on the barrel 6 , and the spring box 6 is fixed on the shaft core cover 1 provided with the one-way self-locking mechanism One side.

The unidirectional self-locking mechanism means that a shaft hole 1 on one side of the drawing shaft is provided with a middle hole 11 , and a ratchet 2 is equally arranged around the middle hole 11 and has a tooth height of 3 瞧. A pawl 3 is disposed on the inner side of the end barrel 7, and the pawl 3 is provided with four ratchet teeth 31 corresponding to the ratchet teeth 2 on the shaft core cover 1. One side of the pawl 3 is cast with a square shaft 32 passing through The middle hole 11 of the core cover 1 engages the ratchet 2 with the pawl 3. The other side of the pawl 3 is provided with a jack 33 which has a slit. The base 4 is fixed at one end in the slit 331.

The ejector rod 33 is abutted by a spring 5 disposed in the barrel 6 , and the U-shaped hole 62 is disposed on the outer casing of the barrel 6 . The spring 4 and the pawl 3 are set in the inner cavity of the barrel 6 . The spring 4 is fixed in the slit 331 of the jack 33, and the other end is fastened in the U-shaped hole 62. When the square shaft 32 of the pawl 3 is rotated, due to the interaction of the ratchet 2 and the pawl 3, the spring 4 is only tightened and does not relax, and acts to tighten the spring 4.

The one-way self-locking mechanism of this embodiment is adjusted by a rotary wrench, and includes a square hole post 10, a wrench 12 and a rib 13 . The square hole column 10 is fixed to the inner side of the end cover of the outer casing 9, the wrench 12 is set on the square hole column 10, the rib 13 is disposed at the root of the square hole column 10, and the wrench 12 is provided with a slope 121, and the inclined surface 121 interacts with the rib 13 when the wrench rotates. There are three slanting faces 121 and three ribs 13. The rotary wrench 12 radially locks the pawl 3 while pushing the pawl 3 to move axially, disengaging the ratchet 31 of the pawl 3 from the ratchet 2. At this time, the drawing axis can be freely rotated in the casing 9, so that the picture 14 can be pulled out or rolled up.

The square hole 10 is provided with a square hole 101. The wrench 12 is provided with a guiding groove 122. The square shaft 32 of the pawl 3 is inserted into the square hole 101 via the guiding groove 122.

The barrel 6 described in this embodiment has a convex inner cavity, and the spring 5 is located in a cavity 61 which is convex at the bottom. When the drawing shaft needs to be taken out from the outer casing 9 for changing the painting, the spring 5 acts as a reset, moves axially against the pawl 3, and returns to the original position, so that the ratchet 31 and the core cover 1 on the pawl 3 The inner ratchet 2 is engaged, and the drawing shaft is in a one-way self-locking state.

A baffle 8 is further mounted on the jack 33, and the top bar 33 is sequentially provided with a baffle 8 and a spring 4 to prevent the spring 4 from catching the pawl 3. The pawl 3 is also fitted in the barrel 6.

The barrel 6 and the barrel 7 are closely fitted on the inner end side of the shaft cover 1 of the fixed one-way self-locking mechanism, so that the barrel 6 does not move relative to the barrel 7.

As shown in Fig. 3, the shaft provided on the outer side of the core cover 插入 is inserted into the sleeve 15 provided inside the end cover of the outer casing 9.

The easy-change spring-type elastic drawing shaft device of the utility model is installed in the outer casing of the new display equipment roll-up, the roll-up cover includes a casing and a flip cover, wherein the lower part of the top view of the roll-up, that is, the front part of the roll-up is a short and long isosceles trapezoidal structure, the front edge is equal to the width of the picture; the flip cover is connected to the outer casing and the inside of the flip cover through a connecting shaft disposed at the rear end of the outer casing A chamber for placing the drawing shaft is formed, and a gap for the passage of the screen is left between the front edge of the flip cover and the outer casing. When multiple pull-ups are placed end to end, there is no gap between the picture and the picture.

In addition, the upper end of the painting is fixed on the hanging picture bar for drawing, the hanging picture bar is equal to the picture width, and the magnets are arranged at both ends of the hanging picture bar, which attract each other when splicing, so that multiple pictures are integrated into one.

Claims

Rights request

1. An easy-to-change spring-loaded elastic drawing shaft, the picture (14) being wound on the drawing axis, comprising a casing (9), a drawing axis and a drawing axis rotating mechanism disposed in the casing (9), wherein the drawing axis is made up of the barrel body (7) And a shaft core cover (1), ( ) at both ends of the barrel body (7), characterized in that: the barrel body (7) is a hollow tube body structure, and the drawing shaft rotating mechanism is a spring winding tightening mechanism The utility model is composed of a one-way self-locking mechanism composed of a pawl (3) and a ratchet (2). The spring winding mechanism has a spring (4) fixed at one end to the one-way self-locking mechanism and the other end is fastened. On the barrel (6), the barrel (6) is fixed to the side of the shaft cover (1) provided with the one-way self-locking mechanism.

2. The easy-change spring-loaded elastic drawing shaft according to claim 1, wherein: the one-way self-locking mechanism is disposed on one side of the drawing shaft, and the shaft core cover (1) is provided with a middle hole (11). ), two or more ratchets (2) are arranged around the middle hole (11), and a pawl (3), a ratchet (2) and a pawl (3) are arranged inside the end barrel (7) ) Engage.

3. The easy-change spring-loaded elastic drawing shaft according to claim 2, wherein: the pawl (3) has two or more and a ratchet on the shaft core cover (1) (2) Corresponding ratchet (31), one side of the pawl (3) is cast with a square shaft (32), passing through the middle hole (11) of the core cover (1), and the other side is provided with an abutting spring (5) The ram (33), the ram (33) has a slit (331), and one end of the spring (4) is fixed in the slit (331).

The easy-change spring-loaded elastic drawing shaft according to claim 3, characterized in that the ejector pin (33) abuts against a spring (5) provided in the barrel (6).

5. The easy-change spring-loaded elastic drawing shaft according to claim 3, wherein: the one-way self-locking mechanism is adjusted by a rotary wrench, and includes a square hole column (10), a wrench (12) and a rib (13). Wherein, the square hole column (10) is fixed to the inner side of the end cover of the outer casing (9), the wrench (12) is set on the square hole column (10), the rib (13) is disposed at the root of the square hole column, and the wrench (12) is provided with a slope (121) ), the inclined surface (121) interacts with the rib (13) as the wrench rotates, and rotates the wrench (12) to radially lock the pawl (3) while pushing the pawl (3) to move axially to make the pawl (3) ) and the ratchet (2) is out of contact.

The easy-to-change spring-loaded elastic drawing shaft according to claim 5, wherein the square hole (10) has a square hole (101) at the end, and the wrench (12) is provided with a guide. The groove (122), the square shaft (32) on the pawl (3) is inserted into the square hole (101) via the guide groove (122).

7. The easy-change spring-loaded elastic drawing shaft according to claim 4, wherein: said barrel (6) having a "convex" shaped inner cavity, the spring (5) being located in a convex chamber (61) at the bottom thereof, being abutted by the pawl ram (33), and the barrel (6) is also provided on the outer casing There is a U-shaped hole (62), the spring (4) and the pawl (3) are set in the inner cavity of the barrel (6), and the spring (4) is fixed at the slit of the pawl ejector (33). In 331), the other end is fastened in the U-shaped hole (62).

8. The easy-change spring-loaded elastic drawing shaft according to claim 3, wherein: the baffle ejector (33) is provided with a baffle (8), and the ejector pin (33) is sequentially provided with a baffle plate ( 8) and clockwork (4).

The easy-change spring-loaded elastic drawing shaft according to claim 8, characterized in that: the pawl (3) is also fitted inside the barrel (6).

10. The easy-change spring-loaded elastic drawing shaft according to claim 1, wherein: the barrel (6) and the barrel (7) are on a side of the shaft cover (1) of the fixed one-way self-locking mechanism Close cooperation.