Telescopic hardware and expansion type round table

Abstract

The utility model belongs to the technical field of furniture, and relates to telescopic hardware which comprises a base, a guide rail and a sliding rail, a hinge seat is arranged at one end of the guide rail, and the hinge seat is hinged to the base through a hinge shaft. A torsion spring for driving the guide rail to rotate towards the base and a limiting structure for limiting the rotating angle of the hinge seat are arranged between the hinge seat and the base, the sliding rail slides in the guide rail and extends out of the other end of the guide rail, a tension spring for driving the sliding rail to retract inwards is arranged between the sliding rail and the guide rail, and a connecting plate is fixed to the outer end of the sliding rail. The utility model further relates to an expansion type round table comprising the telescopic hardware, the expansion type round table comprises a round main table plate and a plurality of fan-shaped expansion plates, the base of the telescopic hardware is fixed at the bottom of the round main table plate, the connecting plates are fixed at the bottoms of the fan-shaped expansion plates, and the sliding rail and the guide rail are obliquely arranged upwards from inside to outside. The telescopic hardware and the expansion type round table have the advantages of being simple in structure, low in manufacturing cost and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of furniture and relates to a telescopic hardware and an extended round table. Background Art

[0002] The expandable round table can be expanded into a large tabletop on the basis of a small tabletop to meet the needs of different tabletop areas in daily life. Chinese utility model patent CN211211872U, announcement date: 2020-08-11 discloses a telescopic hardware and a telescopic round table, including a support seat and a fixed tabletop arranged above the support seat, and a plurality of the above-mentioned telescopic hardware are arranged on the bottom plane of the fixed tabletop, and the upper end face of the first mounting seat of the telescopic hardware is fixed on the bottom plane of the fixed tabletop, and the upper end face of the second mounting seat is fixed on the bottom plane of the movable tabletop. Pulling the movable tabletop puts the telescopic hardware in a stretched state, and the movable tabletop forms a large round table at the edge of the fixed tabletop; contracting the telescopic hardware, the movable tabletop is located on the bottom plane of the fixed tabletop to form a small round table, and the movable tabletop is located on the inner circle of the annular baffle fixed on the bottom plane of the fixed tabletop. The disadvantage of the above round table is that the structure of the telescopic hardware is too complicated, which not only affects the installation and use, but also increases the product cost and affects the market promotion of the product. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a telescopic hardware and an expandable round table, which have the advantages of simple structure, low cost and convenient use.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0005] A telescopic hardware comprises a base, a guide rail and a sliding rail, wherein a hinge seat is arranged at one end of the guide rail, and the hinge seat is hinged to the base through a hinge shaft, a torsion spring for driving the guide rail to rotate toward the base and a limit structure for limiting the rotation angle of the hinge seat are arranged between the hinge seat and the base, the sliding rail slides in the guide rail and extends from the other end of the guide rail, a tension spring for driving the sliding rail to retract is arranged between the slide rails, and a connecting plate is fixed to the outer end of the slide rail.

[0006] In the above-mentioned telescopic hardware, the guide rail and the slide rail are preferably drawer-type slide rail assemblies.

[0007] In the above telescopic hardware, the base is provided with a first fixed shaft, the hinge seat is provided with a second fixed shaft, the torsion spring is sleeved on the hinge shaft, and its movable end is respectively in contact with the first fixed shaft and the second fixed shaft. Preferably, the torsion spring is a double torsion spring.

[0008] In the above-mentioned telescopic hardware, the two ends of the tension spring are fixedly connected to the guide rail and the slide rail respectively. Preferably, the two ends of the tension spring are fixed by bolts.

[0009] In the above telescopic hardware, the hinge seat is provided with an arc-shaped limit groove, the two ends of the first fixed shaft extend outward and pass through the arc-shaped limit groove, and the hinge seat rotates within the stroke defined by the arc-shaped limit groove. Preferably, the arc-shaped limit groove is provided concentrically with the hinge shaft.

[0010] The utility model also provides an expandable round table including the above-mentioned telescopic hardware, including table legs and a table top, the table top including a circular main table top and a plurality of fan-shaped expansion plates, when in the expanded state, the fan-shaped expansion plates are extended to the periphery of the circular main table top, when in the stored state, the fan-shaped expansion plates are stored in parallel below the circular main table top and a gap is left between the circular main table top and the bottom of the circular main table top, the circular main table top and the fan-shaped expansion plates are connected by the telescopic hardware, the base of the telescopic hardware is fixed to the bottom of the circular main table top, the connecting plate is fixed to the bottom of the fan-shaped expansion plate, and the sliding rail and the guide rail are arranged to be inclined upward from the inside to the outside.

[0011] In the above-mentioned expandable round table, the angle α of the movement stroke of the fan-shaped expansion plate when stored is the same as the inclination angle β of the guide rail and the slide rail. When the fan-shaped storage plate is in the expanded state and the stored state, the corresponding guide rail and the slide rail have the same inclination angle.

[0012] In the above-mentioned expandable round table, the fan-shaped expansion panels are staggered and spaced apart when stored, and the bases and / or hinged seats corresponding to the upper and lower fan-shaped expansion panels have different heights, and the corresponding guide rails and slide rails have different inclination angles.

[0013] In the above-mentioned expandable round table, a first slot and a first plug-in block are provided between the outer circular surface of the circular main table plate and the inner circular surface of the fan-shaped expansion plate, and a second slot and a second plug-in block are provided between adjacent fan-shaped expansion plates.

[0014] In the above-mentioned expandable round table, a table edge extending downward is provided at the bottom of the edge of the circular main table board, and the outer end of the slide rail is bent upward to form a bending portion. In the expanded state, a gap is left between the slide rail and the bottom of the table edge. In the retracted state, the fan-shaped expansion plate is located on the inner side of the table edge.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model provides a telescopic hardware and an expandable round table. On the basis of the existing structure, the structure of the telescopic hardware is greatly simplified, one end of the telescopic hardware is set as a hinged structure, and the other end is set as a fixed structure, and the expansion and storage functions of the round table are realized with the inclined slide rail and guide rail. It has the advantages of simple structure, low cost and easy use.

[0017] 2. The telescopic hardware of the utility model adds an angle limiting structure, so that the hinge seat, slide rail, guide rail and fan-shaped expansion plate can only rotate within a limited angle. When the fan-shaped expansion plate is in the storage state, it can ensure that there is a gap between the fan-shaped expansion plate and the circular main table plate to prevent the fan-shaped expansion plate from being scratched.

[0018] 3. The utility model further provides two different telescopic mechanisms, which can be respectively applicable to a round table without a table edge and a round table with a table edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the telescopic hardware of the utility model;

[0020] Figure 2 It is a side view of the telescopic hardware of the utility model;

[0021] Figure 3 It is a schematic diagram of the limiting structure of the utility model;

[0022] Figure 4 It is a three-dimensional diagram of the utility model in the storage state;

[0023] Figure 5 It is a stereogram of the utility model in an expanded state;

[0024] Figure 6 It is a three-dimensional diagram of the utility model in storage or expansion;

[0025] Figure 7 It is a schematic diagram of the installation structure of the telescopic hardware of the utility model;

[0026] Figure 8 It is a connection diagram of the utility model in the expanded state;

[0027] Fig. 9 It is a schematic diagram of the expansion and storage state of the utility model;

[0028] Fig.10 It is a schematic diagram of the expansion and storage state of another structure of the utility model;

[0029] Figure numerals: 1. base; 2. guide rail; 3. slide rail; 4. hinge seat; 5. hinge axis; 6. torsion spring; 7. tension spring; 8. connecting plate; 9. first fixed axis; 10. second fixed axis; 11. arc-shaped limit groove; 12. table leg; 13. circular main table board; 14. fan-shaped expansion plate; 15. first slot; 16. first plug block; 17. second slot; 18. second plug block; 19. table edge; 20. bending portion. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings. Figure 1-10 :

[0031] Example 1

[0032] Compare with Figure 1 A telescopic hardware comprises a base 1, a guide rail 2 and a slide rail 3, a hinge seat 4 is arranged at one end of the guide rail 2, the hinge seat 4 is hinged to the base 1 through a hinge shaft 5, a torsion spring 6 for driving the guide rail 2 to rotate toward the base 1 and a limit structure for limiting the rotation angle of the hinge seat 4 are arranged between the hinge seat 4 and the base 1, the slide rail 3 slides in the guide rail 2 and extends from the other end of the guide rail 2, a tension spring 7 for driving the slide rail 3 to retract is arranged between the slide rail 3 and the guide rail 2, and a connecting plate 8 is fixed to the outer end of the slide rail 3.

[0033] The guide rail 2 and the slide rail 3 are preferably drawer-type slide rail assemblies.

[0034] Compare with Figure 2 The torsion spring 6 in this embodiment is installed in the following manner: a first fixed shaft 9 is provided on the base 1, a second fixed shaft 10 is provided on the hinge seat 4, the torsion spring 6 is sleeved on the hinge shaft 5, and its movable ends are respectively in conflict with the first fixed shaft 9 and the second fixed shaft 10. Preferably, the torsion spring 6 is a double torsion spring 6. The tension spring 7 in this embodiment is installed in the following manner: the two ends of the tension spring 7 are respectively fixedly connected to the guide rail 2 and the slide rail 3. Preferably, the two ends of the tension spring 7 are fixed by bolts.

[0035] Compare with Figure 3 In this embodiment, the limiting structure is: an arc-shaped limiting groove 11 is provided on the articulated seat 4, and the two ends of the first fixed shaft 9 extend outward and penetrate the arc-shaped limiting groove 11. The articulated seat 4 rotates within the stroke limited by the arc-shaped limiting groove 11. When the articulated seat 4 rotates around the articulated shaft 5, the first fixed shaft 9 on the base 1 slides synchronously in the arc-shaped limiting groove 11 on the articulated seat 4. When the first fixed shaft 9 contacts the two ends of the arc-shaped limiting groove 11, the base 1 and the articulated seat 4 cannot continue to rotate relative to each other, thereby forming an angle limiting structure. Preferably, the arc-shaped limiting groove 11 is concentric with the articulated shaft 5.

[0036] Example 2

[0037] An expandable round table including the above-mentioned telescopic hardware includes table legs 12 and a table top, wherein the table top includes a circular main table top 13 and a plurality of fan-shaped expansion plates 14. When in the expanded state, the fan-shaped expansion plates 14 extend to the periphery of the circular main table top 13. When in the stored state, the fan-shaped expansion plates 14 are stored in parallel below the circular main table top 13 and a gap is left between the fan-shaped expansion plates 14 and the bottom of the circular main table top 13. The circular main table top 13 and the fan-shaped expansion plates 14 are connected by the telescopic hardware. The base 1 of the telescopic hardware is fixed to the bottom of the circular main table top 13, and the connecting plate 8 is fixed to the bottom of the fan-shaped expansion plates 14. The slide rail 3 and the guide rail 2 are arranged to be inclined upward from the inside to the outside.

[0038] Compare with Figure 4 , Attachment Figure 5 and attached Figure 6 The use of this embodiment is as follows: when expansion is required, the fan-shaped expansion plate 14 is rotated downward together with the guide rail 2 and the slide rail 3, and then pulled outward. After being pulled out, the fan-shaped expansion plate 14 is moved upward to a horizontal position, and then moved inward until the fan-shaped expansion plate 14 contacts the circular main table plate 13 to form an expansion structure. When storage is required, the fan-shaped expansion plate 14 is moved outward to separate from the circular main table plate 13, and then the fan-shaped expansion plate 14 is moved downward and inward to the storage position. At this time, the tension spring 7 pulls the fan-shaped expansion plate 14 inward, and the torsion spring 6 drives the fan-shaped expansion plate 14 to rotate upward, so that it enters the storage position smoothly.

[0039] Furthermore, the structure provided in this embodiment can also make the expansion structure of the fan-shaped expansion plate 14 more stable. The principle is: in the expanded state, the tension spring 7 applies a pulling force in the oblique inward direction to the fan-shaped expansion plate 14, and the torsion spring 6 applies an upward rotational torsion force to the fan-shaped expansion plate 14. These two forces make the force direction of the fan-shaped expansion plate 14 horizontal, so that the fan-shaped expansion plate 14 forms a stable expansion structure.

[0040] Compare with Fig. 9 , the angle α of the moving stroke of the fan-shaped expansion plate 14 when stored is the same as the inclination angle β of the guide rail 2 and the slide rail 3. When the fan-shaped storage plate is in the expanded state and the stored state, the corresponding guide rail 2 and slide rail 3 have the same inclination angle. The ratio between the height difference between the fan-shaped expansion plate 14 and the circular main table panel 13 at the storage position and the horizontal travel of the slide rail 3 is the same as the inclination ratio of the slide rail 3. For example, the height difference between the fan-shaped expansion plate 14 and the circular main table panel 13 is 3cm, and the telescopic travel of the slide rail 3 is 30cm, then the inclination ratio of the slide rail 3 is 1:10. Through the above settings, it can be ensured that the fan-shaped expansion plate 14 is parallel to the circular main table panel 13 when in the storage position, further avoiding scratches on the fan-shaped storage plate.

[0041] In order to better store the fan-shaped expansion board 14, refer to the attached Fig. 9When the fan-shaped expansion plate 14 is stored, it is staggered and distributed in two layers with a gap. The base 1 and / or hinge seat 4 corresponding to the upper and lower fan-shaped expansion plates have different heights, and the corresponding guide rails 2 and slide rails 3 have different inclination angles.

[0042] In order to make the fan-shaped expansion plate 14 more stable when unfolded, a first plug-in slot 15 and a first plug-in block 16 are provided between the outer circular surface of the circular main table panel 13 and the inner circular surface of the fan-shaped expansion plate 14, and a second plug-in slot 17 and a second plug-in block 18 are provided between adjacent fan-shaped expansion plates 14.

[0043] The bottom of the edge of the circular main table board 13 is provided with a table edge 19 extending downward, and the outer end of the slide rail 3 is bent upward to form a bending portion 20. In the expanded state, a gap is left between the slide rail 3 and the bottom of the table edge 19. In the stored state, the fan-shaped expansion plate 14 is located on the inner side of the table edge 19.

[0044] Example 3

[0045] An expandable round table including the above-mentioned telescopic hardware has a structure substantially the same as that of the second embodiment, but does not include the table edge 19 structure, and the telescopic hardware does not include the bending portion 20 either.

[0046] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A telescopic hardware, comprising a base (1), a guide rail (2) and a slide rail (3), characterized in that: A hinge seat (4) is provided at one end of the guide rail (2), and the hinge seat (4) is hinged to the base (1) via a hinge shaft (5). A torsion spring (6) for driving the guide rail (2) to rotate in the direction of the base (1) and a limit structure for limiting the rotation angle of the hinge seat (4) are provided between the hinge seat (4) and the base (1). The slide rail (3) slides in the guide rail (2) and extends from the other end of the guide rail (2). A tension spring (7) for driving the slide rail (3) to retract is provided between the slide rail (3) and the guide rail (2), and a connecting plate (8) is fixed to the outer end of the slide rail (3).

2. A telescopic hardware according to claim 1, characterized in that: The base (1) is provided with a first fixed shaft (9), the hinge seat (4) is provided with a second fixed shaft (10), the torsion spring (6) is sleeved on the hinge shaft (5), and its movable end is respectively in contact with the first fixed shaft (9) and the second fixed shaft (10).

3. A telescopic hardware according to claim 2, characterized in that: The hinge seat (4) is provided with an arc-shaped limit groove (11), and the two ends of the first fixed shaft (9) extend outward and penetrate the arc-shaped limit groove (11). The hinge seat (4) rotates within the stroke defined by the arc-shaped limit groove (11).

4. An expandable round table comprising the telescopic hardware according to any one of claims 1 to 3, comprising table legs (12) and a table top, characterized in that: The table top comprises a circular main table top (13) and a plurality of fan-shaped extension plates (14). When in an extended state, the fan-shaped extension plates (14) extend to the periphery of the circular main table top (13). When in a stored state, the fan-shaped extension plates (14) are stored in parallel below the circular main table top (13) and a gap is left between the fan-shaped extension plates (14) and the bottom of the circular main table top (13). The circular main table top (13) and the fan-shaped extension plates (14) are connected by the telescopic hardware. The base (1) of the telescopic hardware is fixed to the bottom of the circular main table top (13), and the connecting plate (8) is fixed to the bottom of the fan-shaped extension plates (14). The slide rail (3) and the guide rail (2) are arranged to tilt upward from the inside to the outside.

5. The expandable round table according to claim 4, characterized in that: The included angle α of the moving stroke of the fan-shaped expansion plate (14) when stored is the same as the inclination angle β of the guide rail (2) and the slide rail (3).

6. The expandable round table according to claim 4, characterized in that: When the fan-shaped expansion plates (14) are stored, they are staggered and distributed in two layers with a gap, and the bases (1) and / or hinge seats (4) corresponding to the upper and lower layers of the fan-shaped expansion plates (14) have different heights, and the corresponding guide rails (2) and slide rails (3) have different inclination angles.

7. The expandable round table according to claim 4, characterized in that: A first plug-in fixed slot (15) and a first plug-in block (16) are provided between the outer circular surface of the circular main table plate (13) and the inner circular surface of the fan-shaped expansion plate (14), and a second plug-in fixed slot (17) and a second plug-in block (18) are provided between adjacent fan-shaped expansion plates (14).

8. The expandable round table according to claim 4, characterized in that: The bottom of the edge of the circular main table board (13) is provided with a table edge (19) extending downward, and the outer end of the slide rail (3) is bent upward to form a bending portion (20). In the expanded state, a gap is left between the slide rail (3) and the bottom of the table edge (19). In the retracted state, the fan-shaped expansion plate (14) is located on the inner side of the table edge (19).

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