A hand-clamping-preventing buffer hinge device for a bench cabinet door plate

Abstract

The utility model belongs to the technical field of experiment table cabinet door plate, and disclose a kind of experiment table cabinet door plate anti-pinch hand buffer hinge device, including support frame and base, outer elastic sheet is equipped between the support frame and base, two circular grooves are symmetrically opened in support frame, and rotatingly provided with rotating column between the corresponding two circular grooves, the outer surface of rotating column located upside is movably sleeved with connecting piece, U-shaped column is fixedly inserted on the base, connecting piece is movably sleeved on U-shaped column on one side, the outer surface of rotating column located downside is sleeved with inner elastic sheet, and inner elastic sheet is sleeved on the outer surface of U-shaped column. Through the above scheme, through the double buffering of inner and outer elastic sheet, the closing speed of experiment table cabinet door plate is slowed down, hand is avoided to be pinched, and the safety of frequently used scene is improved;And, rotating column wear-resistant rubber layer reduces stable contact, outer elastic sheet arc transition prevents jam, and connecting seat and support frame are detachable, easy to maintain, prolong the life of device.

Description

Technical Field

[0001] This utility model belongs to the technical field of laboratory cabinet door panels, specifically a laboratory cabinet door panel anti-pinch buffer hinge device. Background Technology

[0002] Laboratory cabinet doors are an important part of laboratory furniture. Their material, structure, and performance directly affect the use and lifespan of the laboratory cabinet. Hinges are used to connect the doors to the cabinet body, allowing the doors to open and close flexibly.

[0003] However, the following problems were found in the implementation of the relevant technologies:

[0004] Most existing laboratory cabinet door hinge devices lack a double elastic buffer structure, making it difficult to control the closing speed of the door. This can easily lead to the risk of fingers being pinched due to rapid closing, resulting in significant safety deficiencies in scenarios where laboratory cabinets are frequently opened and closed and people are often near them.

[0005] Secondly, existing devices often lack a wear-resistant rubber layer on the rotating column, resulting in poor contact stability and high frictional loss. The outer elastic sheet also often lacks a rounded transition design, making it prone to wear and jamming. In addition, the connection structure is often non-removable, making it inconvenient to replace and maintain worn parts, and the overall service life of the device is relatively short. Utility Model Content

[0006] To address the problems mentioned in the background section, this invention provides an anti-pinch buffer hinge device for laboratory cabinet doors, which offers advantages such as anti-pinch protection, long lifespan, easy installation, and convenient use. This invention uses a connecting seat and a base to fix the door panel and cabinet body respectively. When the door panel opens and closes, the inner and outer elastic sheets deform to buffer and prevent pinching. The wear-resistant rubber layer of the rotating column and the outer elastic sheet have a rounded transition to reduce wear. The detachable connecting seat facilitates maintenance, and the groove avoids interference between components, ensuring safe and smooth use.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a buffer hinge device for preventing hand pinching on laboratory cabinet doors, comprising a support frame and a base, an outer elastic sheet between the support frame and the base, two circular grooves symmetrically opened in the support frame, and a rotating column rotatably provided between the corresponding two circular grooves, a connector movably sleeved on the outer surface of the upper rotating column, a U-shaped column fixedly inserted on the base, and one side of the connector movably sleeved on the U-shaped column.

[0008] Preferably, an inner elastic sheet is fitted on the outer surface of the rotating column located on the lower side, and the inner elastic sheet is fitted on the outer surface of the U-shaped column.

[0009] Preferably, a groove for use with a connector is provided on the upper part of one side of the base.

[0010] Preferably, the base has a second slot for use with the outer elastic sheet, and the support frame has a first slot for use with the outer elastic sheet on its upper side.

[0011] Preferably, the lower surface of the support frame is detachably provided with a connecting seat, and connecting blocks are symmetrically fixed on both sides of the connecting seat, and a first connecting bolt groove is opened on the lower surface of the connecting block.

[0012] Preferably, the connecting seat and the support frame are fixedly connected by two positioning bolts.

[0013] Preferably, a mounting plate is fixedly provided on the upper part of one side of the base, and the upper surface of the mounting plate is symmetrically provided with second connecting bolt grooves.

[0014] Preferably, the outer elastic sheet has a rounded transition on one side of the U-shaped column, and the thickness of the outer elastic sheet gradually increases from both ends to the middle. The outer surface of the rotating column is covered with a wear-resistant rubber layer, and the surface of the wear-resistant rubber layer is uniformly distributed with anti-slip texture.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model effectively slows down the closing speed of the door panel through the dual elastic buffering effect of the inner and outer elastic sheets, avoiding the risk of pinching fingers caused by the rapid closing of the door panel. It is especially suitable for scenarios such as laboratory cabinets that are frequently opened and closed and may have people (such as laboratory personnel or students) approaching, greatly improving the safety during use.

[0017] 2. The wear-resistant rubber layer on the outer surface of the rotating column not only enhances contact stability but also reduces frictional loss between the rotating column and other components. Combined with the rounded transition of the outer elastic sheet, it reduces the probability of wear and jamming during structural movement. At the same time, the detachable connection design between the connecting seat and the support frame facilitates the replacement and maintenance of worn parts in the future, further extending the overall service life of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an exploded view of the support frame and connecting seat structure of this utility model;

[0020] Figure 3 This is an exploded view of the support frame and elastic sheet structure of this utility model;

[0021] Figure 4 This is an exploded view of the base and mounting plate structure of this utility model.

[0022] In the diagram: 1. Support frame; 11. Circular groove; 12. Rotary column; 13. Connector; 14. Inner elastic plate; 2. Base; 21. Groove; 22. U-shaped column; 3. Connecting seat; 31. Connecting block; 32. First connecting bolt groove; 33. Positioning bolt; 4. Mounting plate; 41. Second connecting bolt groove; 5. Outer elastic plate; 51. First slot; 52. Second slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 4 As shown, this utility model provides an anti-pinch buffer hinge device for laboratory cabinet doors, including a support frame 1 and a base 2. An outer elastic sheet 5 is provided between the support frame 1 and the base 2. Two circular grooves 11 are symmetrically opened in the support frame 1, and a rotating column 12 is rotatably provided between the two corresponding circular grooves 11. A connector 13 is movably sleeved on the outer surface of the upper rotating column 12. A U-shaped column 22 is fixedly inserted on the base 2. One side of the connector 13 is movably sleeved on the U-shaped column 22. When the laboratory cabinet door drives the support frame 1 to rotate around the rotating column 12 (rotatably arranged between the two symmetrically opened circular grooves 11 in the support frame 1) to close, the movement of the support frame 1 drives the connector 13 movably sleeved on the outer surface of the rotating column 12 (upper side) to move synchronously.

[0025] Specifically, an inner elastic piece 14 is fitted on the outer surface of the lower rotating column 12, and the inner elastic piece 14 is fitted on the outer surface of the U-shaped column 22. Since the other side of the connector 13 is movably fitted on the U-shaped column 22 fixedly inserted on the base 2, the movement of the connector 13 causes the inner elastic piece 14 fitted on the outer surface of the U-shaped column 22 and simultaneously fitted on the outer surface of the rotating column 12 (lower side) to undergo elastic deformation.

[0026] Furthermore, a groove 21 for use with the connector 13 is provided on the upper part of one side of the base 2. The groove 21 on the base 2 for use with the connector 13 can provide sufficient movement space for the connector 13 during the opening of the door panel, thus avoiding mutual interference between the structures.

[0027] Furthermore, the base 2 has a second slot 52 for use with the outer elastic piece 5, and the upper side of the support frame 1 has a first slot 51 for use with the outer elastic piece 5. The outer elastic piece 5 between the support frame 1 and the base 2 (which is respectively engaged in the first slot 51 on the upper side of the support frame 1 and the second slot 52 in the base 2) also undergoes elastic deformation due to the rotation of the support frame 1. The elastic deformation of the inner elastic piece 14 and the outer elastic piece 5 will generate a reverse elastic force, which slows down the rotation speed of the support frame 1 and the door panel.

[0028] It is worth noting that the lower surface of the support frame 1 is detachably provided with a connecting seat 3, and connecting blocks 31 are symmetrically fixed on both sides of the connecting seat 3. The lower surface of the connecting block 31 is provided with a first connecting bolt groove 32. The connecting seat 3 is fixed to the experimental cabinet door panel through the first connecting bolt groove 32 on the lower surface of the connecting blocks 31 on both sides of the connecting seat 3.

[0029] It is worth noting that the connecting seat 3 and the support frame 1 are fixedly connected by two positioning bolts 33. The connecting seat 3 and the support frame 1 are detachably connected by the positioning bolts 33 to complete the overall assembly of the device.

[0030] It is worth mentioning that a mounting plate 4 is fixedly installed on the upper part of one side of the base 2, and a second connecting bolt groove 41 is symmetrically opened on the upper surface of the mounting plate 4. The base 2 is fixed to the cabinet of the experimental table through the second connecting bolt groove 41 on the upper surface of the mounting plate 4 on one side of the base 2.

[0031] It is worth emphasizing that the outer elastic piece 5 has a rounded transition on the edge near the U-shaped post 22, and the thickness of the outer elastic piece 5 gradually increases from both ends to the middle. The outer surface of the rotating post 12 is covered with a wear-resistant rubber layer, and the surface of the wear-resistant rubber layer is evenly distributed with anti-slip texture. The rounded transition on the edge of the outer elastic piece 5 near the U-shaped post 22 can prevent jamming during movement. The wear-resistant rubber layer with anti-slip texture on the outer surface of the rotating post 12 can enhance the contact stability between the rotating post 12 and the connector 13 and the inner elastic piece 14, prevent relative sliding from affecting the buffering effect, and ultimately achieve anti-pinch buffering when the door panel is closed.

[0032] Working principle: First, the connecting seat 3 is fixed to the door panel of the laboratory cabinet through the first connecting bolt groove 32 on the lower surface of the connecting blocks 31 on both sides of the connecting seat 3; then, the base 2 is fixed to the cabinet body of the laboratory cabinet through the second connecting bolt groove 41 on the upper surface of the mounting plate 4 on one side of the base 2; at the same time, the connecting seat 3 is detachably connected to the support frame 1 using the positioning bolt 33, thus completing the overall assembly of the device.

[0033] When the experimental cabinet door moves the support frame 1 to rotate around the rotating column 12 (which is symmetrically set between two circular slots 11 inside the support frame 1) and closes, the movement of the support frame 1 causes the connector 13, which is movably sleeved on the outer surface of the rotating column 12 (upper side), to move synchronously. Since the other side of the connector 13 is movably sleeved on the U-shaped column 22 fixedly inserted on the base 2, the movement of the connector 13 causes the inner elastic sheet 14, which is sleeved on the outer surface of the U-shaped column 22 and simultaneously sleeved on the outer surface of the rotating column 12 (lower side), to undergo elastic deformation. At the same time, the outer elastic sheet 5 between the support frame 1 and the base 2 (which is respectively engaged in the first slot 51 on the upper side of the support frame 1 and the second slot 52 inside the base 2) also undergoes elastic deformation due to the rotation of the support frame 1. The elastic deformation of the inner elastic sheet 14 and the outer elastic sheet 5 will generate a reverse elastic force, which will slow down the rotation speed of the support frame 1 and the door panel. The rounded transition of the outer elastic sheet 5 near the edge of the U-shaped column 22 can prevent jamming during movement. The wear-resistant rubber layer with anti-slip texture wrapped on the outer surface of the rotating column 12 can enhance the contact stability between the rotating column 12 and the connector 13 and the inner elastic sheet 14, prevent relative sliding from affecting the buffering effect, and finally achieve anti-pinch buffering when the door panel is closed.

[0034] When the experimental cabinet door is opened, the door causes the support frame 1 to rotate in the opposite direction. At this time, the elastic deformation of the inner elastic sheet 14 and the outer elastic sheet 5 gradually recovers, releasing the stored elastic potential energy and providing auxiliary power for the rotation of the support frame 1 and the door, making the door open more smoothly until the door is fully opened. All structures return to their initial state. The groove 21 on the base 2 that is used with the connector 13 can provide sufficient movement space for the connector 13 during the opening of the door, avoiding mutual interference between structures.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A buffer hinge device for preventing hand pinching on laboratory cabinet doors, comprising a support frame (1) and a base (2), characterized in that: An outer elastic sheet (5) is provided between the support frame (1) and the base (2). Two circular grooves (11) are symmetrically opened in the support frame (1), and a rotating column (12) is rotatably provided between the two corresponding circular grooves (11). A connector (13) is movably sleeved on the outer surface of the rotating column (12) located on the upper side. A U-shaped column (22) is fixedly inserted on the base (2), and one side of the connector (13) is movably sleeved on the U-shaped column (22).

2. The experimental bench cabinet door anti-pinch buffer hinge device according to claim 1, characterized in that: An inner elastic sheet (14) is fitted on the outer surface of the rotating column (12) located on the lower side, and the inner elastic sheet (14) is fitted on the outer surface of the U-shaped column (22).

3. The experimental bench cabinet door anti-pinch buffer hinge device according to claim 2, characterized in that: The upper part of one side of the base (2) is provided with a groove (21) for use with the connector (13).

4. The experimental bench cabinet door anti-pinch buffer hinge device according to claim 3, characterized in that: The base (2) has a second slot (52) for use with the outer elastic sheet (5), and the support frame (1) has a first slot (51) for use with the outer elastic sheet (5) on its upper side.

5. The experimental bench cabinet door anti-pinch buffer hinge device according to claim 4, characterized in that: The lower surface of the support frame (1) is detachably provided with a connecting seat (3), and the two sides of the connecting seat (3) are symmetrically fixed with connecting blocks (31), and the lower surface of the connecting block (31) is provided with a first connecting bolt groove (32).

6. The experimental bench cabinet door anti-pinch buffer hinge device according to claim 5, characterized in that: The connecting seat (3) and the support frame (1) are fixedly connected by two positioning bolts (33).

7. The experimental bench cabinet door anti-pinch buffer hinge device according to claim 6, characterized in that: The base (2) is fixedly provided with an installation plate (4) on the upper part of one side, and the upper surface of the installation plate (4) is symmetrically provided with second connecting bolt grooves (41).

8. The experimental bench cabinet door anti-pinch buffer hinge device according to claim 7, characterized in that: The outer elastic sheet (5) is rounded at one edge near the U-shaped column (22), and the thickness of the outer elastic sheet (5) gradually increases from both ends to the middle. The outer surface of the rotating column (12) is covered with a wear-resistant rubber layer, and the surface of the wear-resistant rubber layer is uniformly distributed with anti-slip texture.

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