Table plate hinge device

Abstract

The utility model discloses a table plate hinge device which comprises hinge bases, a connecting plate and hinge shafts, the two hinge bases are rotationally connected with the connecting plate through the corresponding hinge shafts, friction structures are arranged between the hinge shafts and the connecting plate, and the hinge bases are provided with abutting parts. When the two hinge bases are in an unfolded state, the friction structure is used for keeping the two hinge bases relatively static; when the two hinge bases are in a flattened state, the abutting parts of the two hinge bases abut against each other. Rotation after the table board is assembled can be achieved through the hinge bases and the connecting plate which are connected in a rotating fit mode, and flattening and supporting of the two hinge bases can be guaranteed through the abutting parts. The arranged friction structure can guarantee that enough friction force exists between the two hinge bases and the connecting plate after assembly during overturning, so that the damping effect is achieved, and the overturning stability is guaranteed. And through the arrangement of the connecting plate, the assembled table plate can be reliably folded, and the hinge device cannot be seen from the front side of the table plate in an unfolded state.

Description

Technical Field

[0001] The utility model specifically relates to a table top hinge device. Background Art

[0002] Vehicles are widely used as public transportation. With the development of technology, the functions of automobiles have been enriched and expanded, including table tops for placing items. Existing table tops are mainly divided into integral type and folding type. The integral table top means that the table top is made of a whole piece of plate and cannot be folded. Although it has high strength, it occupies a large space. Therefore, most of the table tops used in existing vehicles are folding type, that is, the table top is made of two plates that rotate and fit together. However, in actual use, there are many problems with existing folding table tops, such as unevenness after unfolding, and the problem that the hinges are prone to failure, resulting in the folding table top being unable to hover or fall quickly. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to provide a table top hinge device which has a simple structure, a long service life and is flat when unfolded.

[0004] In order to solve the above technical problems, the utility model solves them through the following technical solutions: a table top hinge device, comprising a hinge base, a connecting plate and a hinge shaft, the two hinge bases are rotatably connected to the connecting plate through corresponding hinge shafts, a friction structure is provided between the hinge shaft and the connecting plate, and the hinge base is provided with a supporting portion; when the two hinge bases are in an expanded state, the friction structure is used to keep the two hinge bases relatively still; when the two hinge bases are in a flattened state, the supporting portions of the two hinge bases are pressed against each other.

[0005] Preferably, the connecting plate is provided with a rotating shaft hole, and the hinge shaft can be rotatably inserted into the rotating shaft hole, and the end of the hinge shaft is fixedly matched with the corresponding hinge base; the advantage is that the stability of the rotational cooperation between the hinge base and the connecting plate can be guaranteed through the cooperation between the rotating shaft hole and the hinge shaft, while improving the resistance.

[0006] Furthermore, the hinge shaft includes two coaxially arranged hinge screws, which are respectively located on both sides of the shaft hole, and the hinge screw includes an integrally arranged fixing column and a rod portion, the fixing column is detachably fixed to the hinge base, and the rod portion extends into the shaft hole; the advantage is that the two hinge screws can effectively reduce costs and facilitate disassembly and maintenance.

[0007] Furthermore, the friction structure includes an inner side surface of the shaft hole and a peripheral side surface of the rod, and the inner side surface of the shaft hole is in contact and tight with the peripheral side surface of the rod; the advantage is that the inner side surface of the shaft hole and the peripheral side surface of the rod are in contact and tight with each other, that is, interference fit, which can ensure the reversal stability and hovering of the two hinge bases, thereby ensuring the reliability of the table top.

[0008] Furthermore, the friction structure includes friction plates, the two friction plates are nested on the outside of the hinge shaft and located in the shaft hole, the friction plates are also provided with a limiting plate, the side wall of the shaft hole is provided with a limiting groove along its axial direction, and the limiting plate is inserted in the limiting groove; the advantage is that the friction plates arranged between the connecting plate and the hinge shaft can fully guarantee the rotation stability of the two hinge bases and avoid reverse damping failure. The cooperation between the limiting plates and the limiting grooves can ensure that the friction plates can be driven to rotate when the hinge base is reversed, thereby ensuring the damping effect.

[0009] Furthermore, the friction structure also includes an auxiliary friction plate, which is fixedly matched with the hinge shaft, and the two sides of the auxiliary friction plate are respectively against the connecting plate and the hinge base; the advantage is that the auxiliary friction plate can ensure seamless fit between the connecting plate and the hinge base to avoid lateral shaking, and can also provide friction to achieve a damping effect.

[0010] Furthermore, auxiliary grooves are provided on both side walls of the limit groove, and the limit plate is provided with a limit protrusion, and the limit protrusions on the two friction plates are respectively embedded in the two auxiliary grooves; the advantage is that the stability of the setting of the limit plate can be guaranteed by the setting of the auxiliary grooves and the limit protrusions, thereby ensuring the rotation reliability of the friction plate.

[0011] Furthermore, the hinge base is provided with two support plates located on both sides of the connecting plate, the support plates are provided with mounting holes matching the hinge shaft, and a rotation groove is provided between the two support plates; the advantage is that the support plates can effectively improve the supporting capacity of the hinge shaft, thereby ensuring resistance and reliability in use.

[0012] Furthermore, the hinge base is also provided with a buffer groove located in the rotating groove, a buffer pad is provided in the buffer groove, and the connecting plate is provided with a buffer protrusion corresponding to the buffer pad; when the two hinge bases are in a flattened state, the buffer protrusion is against the buffer pad; the advantage is that the cooperation between the buffer protrusion and the buffer pad can play a buffering role on the connecting plate, avoiding hard collision between the hinge base and the connecting plate when the two hinge bases are unfolded, thereby improving the service life.

[0013] Furthermore, the connecting plate is U-shaped; the advantage is that the U-shaped connecting plate can provide support for the unfolded hinge base, and can also play the role of arc transition after folding and storing, thereby reducing the user's bumps.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the hinge base and the connecting plate connected by the rotational cooperation can realize the rotation after the table top is assembled, and the abutment part can ensure the flattening and support of the two hinge bases. The friction structure can ensure that there is sufficient friction between the two hinge bases and the connecting plate when flipping after assembly to achieve a damping effect and ensure the stability of flipping. Due to the setting of the connecting plate, the assembled table top can be reliably folded and the hinge of the table top in the unfolded state cannot be seen from the front. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 Schematic side view of

[0018] Figure 3 This is a schematic diagram of the cooperation between the hinge base and the buffer pad of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the connecting plate of the utility model;

[0020] Figure 5 It is a schematic diagram of the cooperation between the articulated shaft and the friction plate of the utility model;

[0021] Figure 6 It is a schematic diagram of the hinge shaft of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the connecting plate of the utility model;

[0023] Figure 8 Another embodiment of the connection plate and the hinge shaft matching each other;

[0024] Fig. 9 for Figure 8 Schematic diagram of the disassembly. DETAILED DESCRIPTION

[0025] The utility model is described in further detail below in conjunction with the accompanying drawings.

[0026] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be used for other implementation schemes, variations, improvements, equivalent schemes, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0027] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0028] As attached Figure 1-9 A tabletop hinge device shown in the figure comprises a hinge base 1, a connecting plate 2 and a hinge shaft 3. Both hinge bases 1 are rotatably connected to the connecting plate 2 through the corresponding hinge shaft 3. There is a friction structure between the hinge shaft 3 and the connecting plate 2. The hinge base 1 is provided with a butt portion 1.1. When the two hinge bases 1 are in the unfolded state, the friction structure is used to keep the two hinge bases 1 relatively still. When the two hinge bases 1 are in the flattened state, the butt portions 1.1 of the two hinge bases 1 are pressed against each other. The hinge base 1 and the connecting plate 2 that are provided with a rotational matching connection can realize the rotation after the tabletop is assembled, and the butt portion 1.1 provided can ensure the flattening and support of the two hinge bases 1. The friction structure provided can ensure that there is sufficient friction between the two hinge bases 1 and the connecting plate 2 after assembly to achieve a damping effect and thus ensure the stability of the flipping. Due to the provision of the connecting plate 2, the assembled tabletop can be reliably folded and the hinge of the tabletop in the unfolded state cannot be seen from the front.

[0029] On the basis of the above, the connecting plate 2 is provided with a rotating shaft hole 2.1, and the hinge shaft 3 can be rotatably inserted into the rotating shaft hole 2.1, and the end of the hinge shaft 3 is fixedly matched with the corresponding hinge base 1. The friction structure 4 includes a friction plate 4.1, and the two friction plates 4.1 are nested on the outside of the hinge shaft 3 and located in the rotating shaft hole 2.1. The friction plate 4.1 is also provided with a limit plate 4.2, and the side wall of the rotating shaft hole 2.1 is provided with a limit groove 2.2 along its axial direction, and the limit plate 4.2 is inserted into the limit groove 2.2. The friction plate 4.1 between the connecting plate 2 and the hinge shaft 3 can fully guarantee the rotation stability of the two hinge bases 1 and avoid the failure of reverse damping. The cooperation between the set limit plate 4.2 and the limit groove 2.2 can ensure that the friction plate 4.1 can be driven to rotate when the hinge base 1 is reversed, thereby ensuring the damping effect.

[0030] It is worth mentioning that in order to further ensure the stability of the hinge base plate, the friction structure also includes an auxiliary friction plate 5. The auxiliary friction plate 5 is fixedly matched with the hinge shaft 3, and the two sides of the auxiliary friction plate 5 are respectively against the connecting plate 2 and the hinge base 1. The auxiliary friction plate 5 can ensure the seamless fit between the connecting plate 2 and the hinge base 1 to avoid lateral shaking, and can also provide friction to achieve a damping effect.

[0031] Auxiliary grooves 2.3 are provided on both side walls of the above-mentioned limit groove 2.2, and the limit plate 4.2 is provided with a limit convex block 4.3. The limit convex blocks 4.3 on the two friction plates 4.1 are respectively embedded in the two auxiliary grooves 2.3. The setting of the auxiliary grooves 2.3 and the limit convex blocks 4.3 can ensure the stability of the setting of the limit plate 4.2, thereby ensuring the rotation reliability of the friction plate 4.1.

[0032] It should be noted that the cooperation mode of the hinge shaft 3 and the connecting plate 2 of the utility model can also have another embodiment, the hinge shaft 3 includes two coaxially arranged hinge screws 3.1, the two hinge screws 3.1 are respectively located on both sides of the shaft hole 2.1, the hinge screw 3.1 includes an integrally arranged fixing column and a rod 3.2, the fixing column and the hinge base 1 are detachably fixed and matched, and the rod 3.2 extends into the shaft hole 2.1. The friction structure includes the inner side surface of the shaft hole 2.1 and the peripheral side surface of the rod 3.2, and the inner side surface of the shaft hole 2.1 is in contact with the peripheral side surface of the rod 3.2. The inner side surface of the shaft hole 2.1 is in contact with the peripheral side surface of the rod 3.2, that is, the interference fit, which can ensure the reversal stability and hovering of the two hinge bases 1, thereby ensuring the reliability of the table top. The two hinge screws 3.1 can effectively reduce the cost and facilitate disassembly and maintenance. Preferably, the hinge screw 3.1 can be set to a waist hole type or a special shape.

[0033] The hinge base 1 of the utility model is provided with two support plates 1.2 located on both sides of the connecting plate 2. The support plates 1.2 are provided with mounting holes matched with the hinge shaft 3. There is a rotation groove 1.3 between the two support plates 1.2. The support plates 1.2 can effectively improve the support capacity of the hinge shaft 3 and ensure the use resistance and reliability. The hinge base 1 is also provided with a buffer groove 1.4 located in the rotation groove 1.3. A buffer pad 1.5 is provided in the buffer groove 1.4. The connecting plate 2 is provided with a buffer convex block 2.4 corresponding to the buffer pad 1.5. When the two hinge bases 1 are in a flattened state, the buffer convex block 2.4 abuts against the buffer pad 1.5, so that the buffering effect on the connecting plate 2 can be played through the cooperation of the provided buffer convex block and the buffer pad 1.5, so as to avoid the hard collision between the hinge base 1 and the connecting plate 2 when the two hinge bases 1 are unfolded, thereby improving the service life.

[0034] The connecting plate 2 of the present invention is U-shaped, and the U-shaped connecting plate 2 can support the unfolded hinge base 1, and can also play the role of rounding the corners after being folded and stored, thereby reducing the bumps of users.

[0035] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. A table hinge device, comprising a hinge base, a connecting plate and a hinge shaft, characterized in that: The two hinge bases are rotatably connected to the connecting plate through corresponding hinge shafts, a friction structure is provided between the hinge shaft and the connecting plate, and the hinge base is provided with a supporting portion; when the two hinge bases are in an unfolded state, the friction structure is used to keep the two hinge bases relatively still; when the two hinge bases are in a flattened state, the supporting portions of the two hinge bases are pressed against each other.

2. A tabletop hinge device according to claim 1, characterized in that: The connecting plate is provided with a rotating shaft hole, the hinge shaft is rotatably inserted into the rotating shaft hole, and the end of the hinge shaft is fixedly matched with the corresponding hinge base.

3. A tabletop hinge device according to claim 2, characterized in that: The hinge shaft includes two coaxially arranged hinge screws, which are respectively located on both sides of the shaft hole. The hinge screw includes an integrally arranged fixing column and a rod portion. The fixing column is detachably fixedly matched with the hinge base, and the rod portion extends into the shaft hole.

4. A tabletop hinge device according to claim 3, characterized in that: The friction structure comprises an inner side surface of the rotating shaft hole and a peripheral side surface of the rod portion, and the inner side surface of the rotating shaft hole and the peripheral side surface of the rod portion are in tight contact.

5. The table top hinge device according to claim 2, characterized in that: The friction structure includes friction plates, the two friction plates are nested on the outside of the hinge shaft and located in the shaft hole, the friction plates are also provided with limit plates, the side walls of the shaft hole are provided with limit grooves along their axial direction, and the limit plates are inserted in the limit grooves.

6. A tabletop hinge device according to claim 5, characterized in that: The friction structure further comprises an auxiliary friction plate, which is fixedly matched with the hinge shaft, and two sides of the auxiliary friction plate are respectively against the connecting plate and the hinge base.

7. The table top hinge device according to claim 5, characterized in that: Both side walls of the limiting groove are provided with auxiliary grooves, the limiting plate is provided with limiting protrusions, and the limiting protrusions on the two friction plates are respectively embedded in the two auxiliary grooves.

8. The table top hinge device according to claim 1, characterized in that: The hinge base is provided with two support plates located at both sides of the connecting plate. The support plates are provided with mounting holes matched with the hinge shafts, and a rotation groove is provided between the two support plates.

9. A tabletop hinge device according to claim 8, characterized in that: The hinge base is also provided with a buffer groove located in the rotating groove, a buffer pad is provided in the buffer groove, and the connecting plate is provided with a buffer protrusion corresponding to the buffer pad; when the two hinge bases are in a flattened state, the buffer protrusion is against the buffer pad.

10. The table top hinge device according to claim 8, characterized in that: The connecting plate is U-shaped.

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