A shock-absorbing unit

Abstract

The present invention provides a shock-absorbing unit, belonging to the field of shock-absorbing devices, which includes a fixed frame, a floating frame and shock-absorbing rollers; the fixed frame and the floating frame are connected so as to be axially slidable relative to each other, and one end of the fixed frame away from the floating frame is a fixed end; the fixed frame and the floating frame cooperate to form an activity space for limiting the shock-absorbing rollers; the floating frame has an initial position and a floating position displaced from the initial position relative to the fixed frame, and the activity space changes continuously as the position of the floating frame relative to the fixed frame changes; the distance from the activity space to the fixed end at the floating position is greater than the distance from the activity space to the fixed end at the initial position. It can maintain stability through the inertia of the floating frame and hardly vibrate with the fixed frame. Through the gravity of the floating frame that can automatically return to its position and its load, the vibration amplitude of the fixed frame is matched, so as to gradually reduce the up-and-down floating distance of the floating frame. The setting of the energy dissipation component in the shock-absorbing roller can convert the vibration energy into heat energy, thereby further reducing the influence of vibration on the floating frame.

Description

Technical Field

[0001] The present invention relates to the field of shock-absorbing tools, and more particularly, to a shock-absorbing unit. Background Art

[0002] A plurality of display stands and display cabinets for displaying artworks such as unearthed cultural relics, Buddha statues, carvings, etc. are arranged in buildings such as art galleries, museums, or temples. So far, since these display stands or display cabinets are directly installed on the indoor ground, when an earthquake occurs, the display stands and display cabinets collapse, and the displayed items such as artworks are damaged or injured, resulting in huge irreparable losses. Therefore, the frameworks of the display stands and display cabinets are made very thick to have a strong structure, but it must cost extremely high, and it is also very difficult to make a structure that will not collapse in a major earthquake. Summary of the Invention

[0003] The present invention provides a shock-absorbing unit, aiming to solve the above problems existing in the shock-absorbing unit in the prior art.

[0004] The present invention is implemented as follows:

[0005] A shock-absorbing unit includes a fixed frame, a floating frame, and shock-absorbing rollers;

[0006] The fixed frame and the floating frame are axially slidably connected relative to each other, and one end of the fixed frame away from the floating frame is a fixed end;

[0007] The fixed frame and the floating frame cooperate to form an activity space for limiting the shock-absorbing rollers;

[0008] The floating frame has an initial position and a floating position different from the initial position relative to the fixed frame, and the activity space continuously changes with the change of the position of the floating frame relative to the fixed frame;

[0009] At the floating position, the distance from the activity space to the fixed end is greater than the distance from the activity space to the fixed end at the initial position;

[0010] The shock-absorbing roller includes an outer roller and a central shaft that are rotatably connected. The outer roller cooperates with the inner wall of the activity space, and an energy dissipating member for consuming vibration energy is provided between the outer roller and the central shaft.

[0011] In an embodiment of the present invention, a first arc-shaped groove extending along the axis of the fixed frame is provided on the fixed frame, and the distance from the middle of the first arc-shaped groove to the fixed end is greater than the distance from other positions of the first arc-shaped groove to the fixed end;

[0012] A mating groove extending along the axial direction of the floating frame is provided on the floating frame, and the overlapping part of the mating groove and the first arc groove forms the movable space.

[0013] In an embodiment of the present invention, the mating groove is a second arc groove, and the radian of the second arc groove is opposite to that of the first arc groove.

[0014] In an embodiment of the present invention, the energy dissipation member includes a damping friction layer, and the damping friction layer is provided on the outer roller and / or the central shaft, so that when the outer roller rotates relative to the central shaft, the vibration energy is converted into heat energy.

[0015] In an embodiment of the present invention, the fixed frame includes a first side and a second side arranged oppositely, and one of the first arc grooves is provided on each of the first side and the second side.

[0016] In an embodiment of the present invention, the floating frame includes a third side corresponding to the first side and a fourth side corresponding to the second side;

[0017] One of the second arc grooves is provided on the third side and the fourth side.

[0018] In an embodiment of the present invention, the shock-absorbing roller includes one central shaft and two outer rollers;

[0019] The two outer rollers respectively correspond to the movable space on the first side and the movable space on the second side;

[0020] The central shaft connects the two outer rollers at the same time.

[0021] In an embodiment of the present invention, the outer roller includes a limiting convex ring, and the limiting convex ring is used to abut against the side wall of the first arc groove of the fixed frame or the side wall of the mating groove of the floating frame.

[0022] In an embodiment of the present invention, a first connecting member for connecting an external object is provided at the fixed end.

[0023] In an embodiment of the present invention, a second connecting member for connecting an external object is provided on the surface of the floating frame away from the fixed frame.

[0024] The beneficial effects of the present invention are as follows: Through the shock-absorbing unit provided by the present invention, it can maintain stability due to the inertia of the floating frame and hardly vibrate with the fixed frame. Through the gravity of the floating frame that can automatically return to its position and its load, the vibration amplitude of the fixed frame is matched, so as to gradually reduce the up and down floating distance of the floating frame. The setting of the energy dissipation member in the shock-absorbing roller can convert the vibration energy into heat energy, thereby further reducing the influence of vibration on the floating frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1 is a schematic structural diagram of the shock absorption unit provided by the embodiment of the present invention from the first perspective when the floating frame is at the lowest point of the first arc-shaped groove;

[0027] Figure 2 is a schematic structural diagram of the shock absorption unit provided by the embodiment of the present invention from the first perspective when the floating frame deviates from the lowest point of the first arc-shaped groove;

[0028] Figure 3 is Figure 1 and Figure 2 a schematic diagram of the floating amplitude of the floating frame in;

[0029] Figure 4 is a cross-sectional view of the shock absorption unit provided by the embodiment of the present invention from the second perspective;

[0030] Figure 5 is a schematic structural diagram of the shock absorption unit provided by the embodiment of the present invention with two first arc-shaped grooves provided on both sides of the fixed frame from the first perspective.

[0031] Reference numerals: 100 - fixed frame; 200 - floating frame; 300 - shock absorption roller; 110 - first arc-shaped groove; 210 - second arc-shaped groove; 310 - outer roller; 330 - central axis; 311 - limiting convex ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0033] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] Embodiment

[0035] This embodiment provides a shock-absorbing unit. Please refer to Figure 1 , this shock-absorbing unit includes a fixed frame 100, a floating frame 200, and a shock-absorbing roller 300;

[0036] Both the fixed frame 100 and the floating frame 200 are U-shaped frames. In this embodiment, the outer width of the floating frame 200 is smaller than the inner groove width of the fixed frame 100, and the notches of the floating frame 200 and the fixed frame 100 are arranged opposite to each other, so that the floating frame 200 is accommodated in the fixed frame 100. Through the action of the two outer sides of the floating frame 200 on the inner groove wall surface of the fixed frame 100, the guiding of the movement of the floating frame 200 is carried out, and the fixed frame 100 and the floating frame 200 are connected so as to be axially relatively slidable.

[0037] First arc-shaped grooves 110 are provided on both side plates of the fixed frame 100. The first arc-shaped grooves 110 extend along the axial direction of the fixed frame 100 as a whole, and the middle part of the first arc-shaped grooves 110 bends away from the floating frame 200.

[0038] On both side plates of the floating frame 200, there are mating grooves formed by second arc-shaped grooves 210. The second arc-shaped grooves 210 extend along the axial direction of the floating frame 200 as a whole, and the middle part of the second arc-shaped grooves 210 bends away from the fixed frame 100.

[0039] In this embodiment, since first arc-shaped grooves 110 are provided on both side plates of the fixed frame 100, and second arc-shaped grooves 210 are provided on both side plates of the floating frame 200, and the shock-absorbing roller 300 is also arranged such that one central shaft 330 corresponds to two outer rollers 310, and the two outer rollers 310 correspond to two moving spaces formed by the two first arc-shaped grooves 110.

[0040] Please refer to Figure 1 , Figure 2 and Figure 3, when the first arc-shaped groove 110 and the second arc-shaped groove 210 are in a partially overlapping state during the mating connection of the fixed frame 100 and the floating frame 200, the overlapping part forms a moving space for limiting the shock-absorbing roller 300. That is, the shock-absorbing roller 300 is restricted from moving within the moving space. As the fixed frame 100 and the floating frame 200 undergo relative axial displacement, the overlapping part of the first arc-shaped groove 110 and the second arc-shaped groove 210 will also change, and the change in the moving space will drive the shock-absorbing roller 300 to displace along the axial direction of the fixed frame 100 and the floating frame 200.

[0041] It should be noted that when the shock-absorbing unit is used horizontally on the bearing surface, when the fixed frame 100 and the floating frame 200 are in the initial position, the mid-bottom point of the first arc-shaped groove 110 closest to the floating frame 200 coincides with the mid-apex point of the second arc-shaped groove 210 closest to the fixed frame 100. Because at this time, the fixed frame 100 is fixedly located below the floating frame 200, and the shock-absorbing roller 300 is stuck in the moving space, making the moving space necessarily exist. Only when the moving space is located at the mid-bottom point of the first arc-shaped groove 110, the floating frame 200 has the minimum gravitational potential energy and thus exists stably.

[0042] Correspondingly, when the shock-absorbing unit is used horizontally on the bearing surface, when the floating frame 200 undergoes axial displacement relative to the fixed frame 100 due to horizontal vibration, the moving space disengages from the mid-bottom point of the first arc-shaped groove 110. At this time, the shock-absorbing roller 300 rises as the moving space rises. Correspondingly, the floating frame 200 rises due to the lifting of the shock-absorbing roller 300. The floating frame 200 at this time will have a greater gravitational potential energy than the initial position and will tend to move to a lower place by itself.

[0043] It should be noted that the vibration source is the fixed frame 100, and the floating frame 200 itself will automatically rise to a certain height to match the horizontal vibration of the fixed frame 100. At this time, the floating frame 200 itself does not have large vibrations due to inertia, but instead the fixed frame 100 vibrates horizontally more freely below the floating frame 200 (however, correspondingly, the floating frame 200 will have a certain height fluctuation, but when the radian of the first arc-shaped groove 110 and the second arc-shaped groove 210 is not large, its up and down fluctuation amplitude can be ignored compared to the horizontal movement amplitude of the fixed frame 100).

[0044] The vibration of the fixed frame 100 will eventually weaken smoothly, and at this time, the floating frame 200 will also move automatically to a relatively lower place due to its gravitational potential energy to automatically match the weaker horizontal vibration of the fixed frame 100.

[0045] That is, through the radian settings of the first arc groove 110 and the second arc groove 210, the floating frame 200 can match the change in the vibration amplitude of the fixed frame 100 under its own gravity, so as to always maintain the minimum vibration amplitude based on its inertia.

[0046] It should be noted that in this embodiment, the mating groove on the floating frame 200 and the first arc groove 110 on the fixed frame 100 are both arc grooves. Selecting a certain radian through experiments can achieve excellent shock absorption effects for corresponding vibration intensities. In other embodiments, a V-shaped groove, a wavy groove, etc. can be selected. Of course, one of them can be selected as an arc groove, a V-shaped groove, a wavy groove, and the other can be set as a straight long groove, etc. That is, the forms of the two grooves on the fixed frame 100 and the floating frame 200 can be different. However, if the first arc groove 110 and the mating groove in this embodiment are both replaced with straight long grooves, the function of the floating frame 200 automatically matching the change in the vibration amplitude of the fixed frame 100 by its own gravity may be lost.

[0047] Please refer to Figure 4 , in this embodiment, the shock absorption roller 300 includes an outer roller 310 and a central shaft 330 that are rotatably connected. The outer roller 310 cooperates with the inner wall of the moving space, and an energy dissipation member for consuming vibration energy is provided between the outer roller 310 and the central shaft 330.

[0048] Because during the whole process, the floating frame 200 and the fixed frame 100 always have relative displacements (the floating frame 200 and the load on it are stable relative to their initial positions, while the fixed frame 100 has repeated displacements relative to its initial position), so the shock absorption roller 300 also always has motion. The energy dissipation member can convert the vibration energy into heat energy as much as possible, thereby reducing the influence of vibration on the floating frame 200 and making the floating frame 200 as stable as possible based on its inertia.

[0049] Specifically, the energy dissipation member includes a damping friction layer, and the damping friction layer is provided on the outer roller 310 and / or the central shaft 330, so that the vibration energy is converted into heat energy when the outer roller 310 rotates relative to the central shaft 330.

[0050] More importantly, after the vibration of the fixed frame 100 stops, during the return process of the floating frame 200, it will overshoot due to the inertia of motion and thus swing repeatedly. Without the setting of the energy dissipation member, the number of its repeated swings will increase greatly, resulting in the negative effect that the vibration of the floating frame 200 increases instead after the fixed frame 100 stops.

[0051] In this embodiment, the outer roller 310 includes a limiting convex ring 311, and the limiting convex ring 311 is used to abut against the inner side wall of the first arc groove 110 of the fixed frame 100 or the inner side wall of the second arc groove 210 of the floating frame 200.

[0052] The axial displacement of the shock-absorbing roller 300 can be restricted by the limiting convex ring 311.

[0053] In this embodiment, the fixed end needs to be fixed on the bearing surface, so a first connecting piece for connecting external objects is provided at the fixed end.

[0054] Moreover, the floating frame 200 also needs to bear the load, so a second connecting piece for connecting the load is provided at one end of the floating frame 200 away from the fixed frame 100.

[0055] Both the first connecting piece and the second connecting piece can be connecting pieces such as rivets and screws.

[0056] Please refer to Figure 5 , it should be noted that, in this embodiment, a first arc-shaped groove 110 is provided on each side of the fixed frame 100, and a second arc-shaped groove 210 is provided on each side of the floating frame 200. In other embodiments, according to the increase in the lengths of the fixed frame 100 and the floating frame 200, the number of the first arc-shaped grooves 110 on both sides of the fixed frame 100 can also be increased to two, three or others. Correspondingly, the number of the second arc-shaped grooves 210 on both sides of the floating frame 200 can also be increased to two, three or others.

[0057] Through the shock-absorbing unit provided by the present invention, it can remain stable by the inertia of the floating frame 200 and hardly vibrate along with the fixed frame 100. By the gravity of the floating frame 200 capable of automatically returning to its position and its load, the vibration amplitude of the fixed frame 100 is matched, so as to gradually reduce the up-and-down floating distance of the floating frame 200. The setting of the energy-dissipating component in the shock-absorbing roller 300 can convert the vibration energy into heat energy, thereby further reducing the influence of vibration on the floating frame 200.

[0058] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shock-absorbing unit, characterized in that, it includes a fixed frame, a floating frame and shock-absorbing rollers; the fixed frame and the floating frame are connected so as to be axially slidable relative to each other, and one end of the fixed frame away from the floating frame is a fixed end; the fixed frame and the floating frame cooperate to form an activity space for limiting the shock-absorbing rollers; the floating frame has an initial position and a floating position different from the initial position relative to the fixed frame, and the activity space changes continuously as the position of the floating frame relative to the fixed frame changes; when in the floating position, the distance from the activity space to the fixed end is greater than the distance from the activity space to the fixed end when in the initial position; the shock-absorbing roller includes an outer roller and a central shaft that are rotatably connected, the outer roller cooperates with the inner wall of the activity space, and an energy dissipation member for consuming vibration energy is provided between the outer roller and the central shaft.

2. The shock-absorbing unit according to claim 1, characterized in that, a first arc-shaped groove extending along the axis of the fixed frame is provided on the fixed frame, and the distance from the middle part of the first arc-shaped groove to the fixed end is greater than the distance from other positions of the first arc-shaped groove to the fixed end; a mating groove extending along the axis of the floating frame is provided on the floating frame, and the overlapping part of the mating groove and the first arc-shaped groove forms the activity space.

3. The shock-absorbing unit according to claim 2, characterized in that, the mating groove is a second arc-shaped groove, and the radian of the second arc-shaped groove is opposite to that of the first arc-shaped groove.

4. The shock-absorbing unit according to claim 1, characterized in that, the energy dissipation member includes a damping friction layer, and the damping friction layer is provided on the outer roller and / or the central shaft so that vibration energy is converted into heat energy when the outer roller rotates relative to the central shaft.

5. The shock-absorbing unit according to claim 3, characterized in that, the fixed frame includes a first side and a second side that are oppositely arranged, and one of the first arc-shaped grooves is provided on each of the first side and the second side.

6. The shock-absorbing unit according to claim 5, characterized in that, the floating frame includes a third side corresponding to the first side and a fourth side corresponding to the second side; one of the second arc-shaped grooves is provided on the third side and the fourth side.

7. The shock-absorbing unit according to claim 6, characterized in that, the shock-absorbing roller includes one central shaft and two outer rollers; the two outer rollers respectively correspond to the activity space on the first side and the activity space on the second side; the central shaft connects the two outer rollers at the same time.

8. The shock-absorbing unit according to claim 7, characterized in that, the outer roller includes a limiting convex ring, and the limiting convex ring is used to abut against the side wall of the first arc-shaped groove of the fixed frame or the side wall of the mating groove of the floating frame.

9. The shock-absorbing unit according to claim 1, characterized in that, a first connecting member for connecting an external object is provided at the fixed end.

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