Anti-impact screen

Abstract

The invention discloses an anti-impact screen which comprises an anti-impact device arranged between a first shaft and a second shaft, the anti-impact device comprises a sleeve and a spring which are arranged in the first shaft, and the sleeve movably sleeves the peripheral surface of the second shaft and is connected with the first shaft; a first spring part of the spring sleeves the peripheral surface of the sleeve, and a second spring part of the spring sleeves the second shaft; the friction force between the sleeve and the spring is greater than that between the spring and the second shaft; the spring is configured such that when the second shaft rotates in the first rotation direction relative to the first shaft, the second spring portion contracts to hold the second shaft. The anti-impact device is arranged between the first screen and the second screen, so that when the screen is impacted, the second spring part moves more freely than the first spring part due to different friction forces between the spring and the second shaft and between the spring and the sleeve, and the second spring part contracts to tightly hold the second shaft; therefore, the rotating force opposite to the impact force and larger than the impact force is provided for the second shaft, and instant impact on the screen is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of office supplies, in particular to an impact-proof screen. Background Art

[0002] Generally, screens are commonly used as decorations in both home and office settings. However, when a screen is accidentally touched or falls, its original folded shape is easily changed. Therefore, an impact-proof screen is urgently needed to solve the above problem. Summary of the invention

[0003] The object of the present invention is to provide an impact-resistant screen, aiming to solve at least one technical problem in the above-mentioned prior art.

[0004] In order to solve the above technical problems, the object of the present invention is achieved through the following technical solutions: Provide an impact-proof screen, comprising a first screen and a second screen arranged adjacent to each other, wherein the first screen has a first axis, the second screen has a second axis, the second axis is inserted into an axis hole of the first axis, the first axis and the second axis are configured to be relatively rotatable, an impact-proof device is arranged between the first axis and the second axis, the impact-proof device is configured to apply a rotational force to the first axis and / or the second axis to resist impact, and the impact-proof device comprises:

[0005] A sleeve, disposed in the shaft hole of the first shaft, the sleeve being movably sleeved on the outer peripheral surface of the second shaft, and the sleeve being frictionally engaged with the first shaft;

[0006] A spring is disposed in the first shaft, wherein a first spring portion of the spring is sleeved on an outer peripheral surface of the sleeve, and a second spring portion of the spring is sleeved on the second shaft;

[0007] The friction force between the sleeve and the spring is greater than the friction force between the spring and the second shaft;

[0008] The spring is configured such that when the second shaft rotates relative to the first shaft in a first rotational direction, the second spring portion of the spring contracts to hug the second shaft.

[0009] Further, the material of the sleeve is different from the material of the second shaft.

[0010] Further, the second axis includes:

[0011] A first portion having a first diameter, wherein the sleeve is sleeved on the first portion;

[0012] The second portion has a second diameter greater than the first diameter, and the spring contacts the second shaft at the second portion.

[0013] Furthermore, the sleeve comprises:

[0014] a body, sleeved on the first portion of the second shaft;

[0015] The end portion is connected to one end of the body, and the end portion is fixedly connected or selectively fixedly connected to the first shaft.

[0016] Further, it also includes a damping selection mechanism disposed in the first shaft and configured to selectively frictionally engage the sleeve with the first shaft, the damping selection mechanism comprising:

[0017] a friction member disposed in the first shaft and frictionally engaged with the end portion of the sleeve;

[0018] an elastic member disposed in the first shaft and applying an elastic force along the axial direction of the first shaft to the friction member;

[0019] A threaded member is threadedly connected to the first shaft to be spirally moved along the axial direction of the first shaft, and the threaded member is configured to abut against one end of the elastic member away from the friction member.

[0020] Furthermore, the elastic member is a wave spring, and two wave springs are provided.

[0021] Further, the shaft hole of the first shaft has a gap for allowing the spring to deform along the axial direction.

[0022] Furthermore, the second shaft is detachably connected to the first screen via a connecting piece, and the connecting piece passes through the second shaft along the axial direction from a side of the second shaft away from the second screen and is connected to the second screen.

[0023] Furthermore, two anti-impact devices are provided, one of which is provided on one side of the second screen, and the other anti-impact device is provided on the other side of the second screen opposite to the one side.

[0024] Further, the spring of one of the anti-impact devices contracts and hugs the second shaft along the first rotation direction, and the spring of the other anti-impact device contracts and hugs the second shaft along a second rotation direction opposite to the first rotation direction.

[0025] An embodiment of the present invention provides an impact-proof screen. An impact-proof device is arranged between a first screen and a second screen so that when the screen is impacted, the second spring part of the spring moves more freely than the first spring part due to the different friction between the spring, the second shaft and the sleeve. The second spring part contracts and holds the second shaft tightly, thereby providing a greater rotational force to the second shaft that is opposite to the impact force, thereby reducing the instantaneous impact on the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 A schematic diagram of the overall structure of the impact-proof screen provided by an embodiment of the present invention, omitting most of the main bodies of the first screen and the second screen;

[0028] Figure 2 The embodiment of the present invention provides Figure 1 Schematic diagram of the overall cross-sectional structure;

[0029] Figure 3 The embodiment of the present invention provides Figure 2 A magnified schematic diagram of part A;

[0030] Figure 4 The embodiment of the present invention provides Figure 3 Schematic diagram of the method in part B.

[0031] Description of the symbols in the figure:

[0032] 1. first screen; 11. first axis; 12. axis hole; 13. gap;

[0033] 2. second screen; 21. second axis; 211. first part; 212. second part; 22. connecting member;

[0034] 3. Anti-impact device; 31. Sleeve; 311. Main body; 312. End portion; 32. Spring; 321. First spring portion; 322. Second spring portion; 33. Damping selection mechanism; 331. Friction member; 332. Elastic member; 333. Threaded member. DETAILED DESCRIPTION

[0035] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0036] In the description of the present invention, the meaning of "a plurality of" is more than two. Understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, and understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0037] In the description of the present invention, it should be understood that for the description of directions, such as the directions or position relationships indicated by "up", "down", "front", "back", "left", "right", etc., they are based on the directions or position relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0038] In the present invention, unless otherwise clearly defined, words such as "arrangement", "installation", "connection", etc. should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, and can also be integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0039] Figure 1 、 Figure 2 It is shown that the present invention provides a shock-proof screen in an embodiment. The screen can be any type of screen that can be rotated and folded on the market. In other words, any type and model of rotatable and foldable screen on the market can be installed with the shock-proof device 3 provided in this application, and no specific limitation is made here.

[0040] Please refer to Figures 1 to 3 , a shock-proof screen provided in this embodiment includes a first screen 1, a second screen 2, and at least one shock-proof device 3.

[0041] The first screen 1 includes a first shaft 11, and the first shaft 11 has a shaft hole 12;

[0042] The second screen 2 includes a second shaft 21. When the first screen 1 and the second screen 2 are adjacently connected, the second shaft 21 passes through the shaft hole 12 of the first shaft 11, and the first shaft 11 is configured to be rotatable relative to the second shaft 21;

[0043] The shock-proof device 3 is arranged between the first shaft 11 and the second shaft 21, and is configured to apply a rotational force against impact to the first shaft 11 and / or the second shaft 21. Specifically, the shock-proof device 3 includes a sleeve 31 and a spring 32. Among them,

[0044] The sleeve 31 is disposed in the shaft hole 12 of the first shaft 11. The sleeve 31 is movably sleeved on the outer peripheral surface of the second shaft 21, and the sleeve 31 is connected to the first shaft 11.

[0045] The spring 32 is disposed in the first shaft 11. The first spring portion 321 of the spring 32 is sleeved on the outer peripheral surface of the sleeve 31, and the second spring portion 322 of the spring 32 is sleeved on the second shaft 21.

[0046] The frictional force between the sleeve 31 and the spring 32 is greater than the frictional force between the spring 32 and the second shaft 21.

[0047] The spring 32 is configured such that when the second shaft 21 rotates relative to the first shaft 11 in the first rotation direction, the second spring portion 322 of the spring 32 contracts to hold the second shaft 21 tightly.

[0048] In the above design, the connection between the sleeve 31 and the first shaft 11 means that the sleeve 31 can be fixedly connected to the first shaft 11, for example, fixedly connected to the first shaft 11 by bolts or adhesively bonded to the first shaft 11 by glue. It can also be that the sleeve 31 is frictionally engaged with the first shaft 11. When the frictional force received by the sleeve 31 is less than the preset frictional force, the sleeve 31 and the first shaft 11 are relatively stationary. The frictional forces between the sleeve 31 and the first spring portion 321 and the second spring portion 322 of the spring 32 are different, which is achieved by the different materials of the sleeve 31 and the second shaft 21. Different materials result in different friction coefficients between the sleeve 31 and the spring 32 and between the spring 32 and the second shaft 21, so that the frictional force received by the first spring portion 321 is greater than the frictional force received by the second spring portion 322.

[0049] In addition, the shaft hole 12 of the first shaft 11 has a gap 13 for the spring 32 to deform in the axial direction, so as to leave enough space for the deformation of the spring 32.

[0050] With such a design, when the screen is impacted, due to the different frictional forces between the spring 32 and the second shaft 21 and the sleeve 31, the second spring portion 322 of the spring 32 moves more freely than the first spring portion 321. The second spring portion 322 contracts to hold the second shaft 21 tightly, thereby providing a greater rotational force opposite to the impact force to the second shaft 21 to reduce the impact received by the screen instantaneously.

[0051] Furthermore, the second shaft 21 includes a first portion 211 and a second portion 212. Among them,

[0052] The first portion 211 has a first diameter, and the sleeve 31 is sleeved on the first portion 211.

[0053] The second portion 212 has a second diameter greater than the first diameter, and the spring 32 contacts the second shaft 21 at the second portion 212.

[0054] With such a design, the sleeve 31 and the second shaft 21 can be adapted to the inner diameter of the spring 32, so that the first spring portion 321 and the second spring portion 322 of the spring 32 can be respectively in close contact with the sleeve 31 and the second portion 212 of the second shaft 21.

[0055] Furthermore, the sleeve 31 includes a body 311 and an end portion 312. Among them,

[0056] The body 311 is sleeved on the first portion 211 of the second shaft 21;

[0057] The end portion 312 is connected to one end of the body 311, and the end portion 312 is fixedly connected or selectively fixedly connected to the first shaft 11.

[0058] With such a design, the end portion 312 of the sleeve 31 can be fixedly connected or frictionally engaged with the first shaft 11.

[0059] For the design of the frictional engagement between the end portion 312 of the sleeve 31 and the first shaft 11, this embodiment further includes a damping selection mechanism 33. The damping selection mechanism 33 is disposed in the shaft hole 12 of the first shaft 11 and is configured to selectively frictionally engage the end portion 312 of the sleeve 31 with the first shaft 11. The damping selection mechanism 33 includes a friction member 331, an elastic member 332, and a threaded member 333. Among them,

[0060] The friction member 331 is disposed in the shaft hole 12 of the first shaft 11 and frictionally engages with the end portion 312 of the sleeve 31;

[0061] The elastic member 332 is disposed in the first shaft 11 and applies an elastic force along the axial direction of the first shaft 11 to the friction member 331;

[0062] The threaded member 333 is threadedly connected to the first shaft 11 to move spirally along the axial direction of the first shaft 11, and the threaded member 333 is configured to abut against one end of the elastic member 332 away from the friction member 331.

[0063] In the above design, the selective frictional engagement means that the damping selection mechanism 33 can make the frictional force between the end portion 312 of the sleeve 31 and the first shaft 11 zero or very small, or make the frictional force between the end portion 312 of the sleeve 31 and the first shaft 11 large enough to make the sleeve 31 stationary relative to the first shaft 11. In addition, in this embodiment, the elastic member 332 is a wave spring 32, and two wave springs 32 are provided in total. The two wave springs 32 are stacked on each other to contact the friction member 331 and the threaded member 333.

[0064] With such a design, the user can control the frictional force between the friction member 331 and the sleeve 31 by rotating the threaded member 333, so as to selectively control whether the sleeve 31 is stationary relative to the first shaft 11. For example, when it is necessary to enable the anti-impact function of the screen, the threaded member 333 can be screwed to make the frictional force between the sleeve 31 and the first shaft 11 large enough so that the sleeve 31 can remain relatively stationary with respect to the first shaft 11, so that the spring 32 can play the role of tightly holding the second shaft 21.

[0065] Of course, the user can also make the frictional force between the sleeve 31 and the first shaft 11 be able to keep the sleeve 31 and the first shaft 11 relatively stationary to a certain extent. In this case, when the screen is subjected to an excessive impact, the impact force is greater than the static frictional force between the sleeve 31 and the first shaft 11, and the sleeve 31 and the first shaft 11 rotate relative to each other, and the first screen 1 and the second screen 2 rotate relative to each other, avoiding damage to the screen due to excessive impact / collision.

[0066] In addition, the user can also screw the threaded member 333 to make the frictional force between the first shaft 11 and the sleeve 31 small enough so that the spring 32 loses the function of tightly holding the second shaft 21, that is, cancel the anti-impact function of the screen, which is convenient for the user to fold the screen and meets the use requirements in multiple scenarios.

[0067] Furthermore, for the convenience of assembling the first screen 1 and the second screen 2, the second shaft 21 is detachably connected to the first screen 1 through a connecting member 22, and the connecting member 22 passes through the second shaft 21 along the axial direction from the side of the second shaft 21 facing away from the second screen 2 and is connected to the second screen 2.

[0068] In this way, the second shaft 21 and the second screen 2 are of a split design. When assembling the first screen 1 and the second screen 2, the first screen 1 and the second screen 2 can be first matched, and then the second shaft 21 with the spring 32 and the sleeve 31 pre-assembled can be inserted into the shaft hole 12 of the first shaft 11 on the first screen 1, and then the second shaft 21 is fixed to the second screen 2 with the connecting member 22, and then the friction member 331, the wave spring 32 and the threaded member 333 are installed, and the assembly is simple.

[0069] In a further embodiment, two anti-impact devices 3 are provided in total. One anti-impact device 3 is arranged on one side of the second screen 2, and the other anti-impact device 3 is arranged on the other side of the second screen 2 opposite to one side.

[0070] Among them, the spring 32 of one anti-impact device 3 contracts and tightly holds the second shaft 21 along the first rotation direction, and the spring 32 of the other anti-impact device 3 contracts and tightly holds the second shaft 21 along the second rotation direction opposite to the first rotation direction.

[0071] With such a design, when the first screen 1 and the second screen 2 are impacted in different directions, one of the shock protection devices 3 can be triggered, effectively improving the protection ability. Of course, in other embodiments, the two shock protection devices 3 can also be configured to only protect against impacts in the same direction.

[0072] Of course, the present invention is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations and substitutions are all included in the scope defined by the claims of this application.

Claims

1. An impact-resistant screen, comprising a first screen (1) and a second screen (2) arranged adjacent to each other. The first screen (1) has a first shaft (11), and the second screen (2) has a second shaft (21). The second shaft (21) is inserted into a shaft hole (12) of the first shaft (11), and the first shaft (11) is configured to be rotatable relative to the second shaft (21). It is characterized in that: An anti-impact device (3) is provided between the first shaft (11) and the second shaft (21), and the anti-impact device (3) is configured to apply a rotational force to the first shaft (11) and / or the second shaft (21) to resist impact, and the anti-impact device (3) comprises: a sleeve (31), arranged in the shaft hole (12) of the first shaft (11), the sleeve (31) being movably sleeved on the outer peripheral surface of the second shaft (21), and the sleeve (31) being connected to the first shaft (11); a spring (32) disposed in the first shaft (11), wherein a first spring portion (321) of the spring (32) is sleeved on the outer peripheral surface of the sleeve (31), and a second spring portion (322) of the spring (32) is sleeved on the second shaft (21); The friction force between the sleeve (31) and the spring (32) is greater than the friction force between the spring (32) and the second shaft (21); The spring (32) is configured such that when the second shaft (21) rotates relative to the first shaft (11) in a first rotation direction, the second spring portion (322) of the spring (32) contracts to hold the second shaft (21).

2. The anti-impact screen according to claim 1, characterized in that, The material of the sleeve (31) is different from the material of the second shaft (21).

3. The anti-impact screen according to claim 1, wherein The second shaft (21) comprises: A first portion (211) having a first diameter, and the sleeve (31) is sleeved on the first portion (211); The second portion (212) has a second diameter greater than the first diameter, and the spring (32) contacts the second shaft (21) at the second portion (212).

4. The anti-impact screen according to claim 3, characterized in that, The sleeve (31) comprises: A body (311) sleeved on the first portion (211) of the second shaft (21); The end portion (312) is connected to one end of the body (311), and the end portion (312) is fixedly connected or selectively fixedly connected to the first shaft (11).

5. The impact-proof screen according to claim 4, wherein, The invention also includes a damping selection mechanism (33) disposed in the first shaft (11) and configured to selectively frictionally engage the sleeve (31) with the first shaft (11), wherein the damping selection mechanism (33) includes: a friction member (331) disposed in the first shaft (11) and frictionally engaged with the end portion (312) of the sleeve (31); an elastic member (332) disposed in the first shaft (11) and applying an elastic force along the axial direction of the first shaft (11) to the friction member (331); A threaded member (333) is threadedly connected to the first shaft (11) so as to be spirally moved along the axial direction of the first shaft (11), and the threaded member (333) is configured to abut against one end of the elastic member (332) away from the friction member (331).

6. The impact-proof screen according to claim 5, wherein; The elastic member (332) is a wave spring (32), and two wave springs (32) are provided.

7. The impact-proof screen according to claim 3, characterized in that: The shaft hole (12) of the first shaft (11) has a gap (13) for the spring (32) to deform along the axial direction.

8. The anti-impact screen according to claim 6, characterized in that: The second shaft (21) is detachably connected to the first screen (1) via a connecting piece (22); the connecting piece (22) passes through the second shaft (21) along the axial direction from a side of the second shaft (21) facing away from the second screen (2) and is connected to the second screen (2).

9. The impact-proof screen according to claim 5, characterized in that: Two anti-impact devices (3) are provided in total, one anti-impact device (3) is provided on one side of the second screen (2), and the other anti-impact device (3) is provided on the other side of the second screen (2) opposite to the one side.

10. The anti-impact screen according to claim 2, wherein: The spring (32) of one of the anti-impact devices (3) contracts and embraces the second shaft (21) along the first rotation direction, and the spring (32) of the other anti-impact device (3) contracts and embraces the second shaft (21) along a second rotation direction opposite to the first rotation direction.

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