Furniture cross beam connecting structure

Abstract

The utility model provides a furniture crossbeam connecting structure, which belongs to the furniture structure field, and comprises a support leg and a crossbeam, one side of the support leg is provided with a connecting part having the same shape with the crossbeam, the crossbeam and the connecting part are hollow structures, a lock groove is fixedly installed in the connecting part, the lock groove extends out of the connecting part to form a first protruding part, and the first protruding part is provided with a second protruding part. A notch is formed in the first protruding part, a locking block is installed in the notch, a threaded hole is formed in the locking block, a penetrating hole matched with the threaded hole is formed in the cross beam, the first protruding part is inserted into the cross beam till the cross beam makes contact with the connecting part, and a headless bolt penetrates through the penetrating hole and is connected to the threaded hole in a threaded mode at the same time so that the cross beam can be fixedly connected to the supporting leg. The headless bolts, the locking blocks, the penetrating holes and the locking grooves are matched to fixedly connect the cross beams and the supporting legs from the interiors of the connecting parts of the cross beams and the supporting legs, hardware connecting pieces do not need to be wrapped outside, and the appearance is better.

Description

Technical Field

[0001] The utility model belongs to the field of furniture structures, and particularly relates to a connecting structure for a furniture cross beam. Background Art

[0002] Currently, assembled furniture tables generally include a tabletop and table legs. In order to meet different specification and size requirements, the table legs are composed of general support legs and cross beams of different lengths, so as to reduce the pressure of warehousing and transportation. At present, the assembly connection methods between the cross beam and the support legs are mostly welding or fixed connection through the cooperation of connecting hardware and bolts. However, the welding process is complex and requires professional personnel, which not only causes high costs but also limits the improvement of efficiency; the connection method using the cooperation of connecting hardware and bolts mostly wraps the connection parts at the ends of the cross beam and the support legs from the outside, and then fixes them with bolts. Although the operation is simple, the external hardware connectors affect the appearance of the furniture. Content of the Utility Model

[0003] Based on the above problems in the prior art, the utility model provides a connecting structure for a furniture cross beam, including a support leg and a cross beam. A connecting part with the same shape as the cross beam is arranged on one side of the support leg. Both the cross beam and the connecting part are hollow structures. A lock groove is fixedly installed inside the connecting part, and the lock groove extends outside the connecting part to form a first protruding part. A notch is arranged on the first protruding part, and a lock block is installed in the notch. A threaded hole is arranged on the lock block. A through hole matching the threaded hole is arranged on the cross beam. The first protruding part is inserted into the cross beam until the cross beam contacts the connecting part, and the cross beam is fixedly connected to the support leg by simultaneously passing a headless bolt through the through hole and threadedly connecting it to the threaded hole.

[0004] Wherein, a first tightening slope is arranged on the notch, and a second tightening slope is arranged on the lock block. The first tightening slope and the second tightening slope are parallel and in contact with each other. Both the first tightening slope and the second tightening slope are inclined towards the support leg side in the direction of the headless bolt.

[0005] Wherein, a limiting groove is fixedly installed inside the cross beam, and the limiting groove extends outside the cross beam to form a second protruding part. The second protruding part is inserted into the connecting part and blocks the threaded hole of the lock block. The headless bolt is located on the other side of the lock block relative to the limiting groove.

[0006] Wherein, a supporting table parallel to the tabletop is fixedly installed at the top of the support leg.

[0007] Wherein, an installation groove is fixedly installed at the top of the support leg, and a connecting beam is fixedly installed on the installation groove.

[0008] The beneficial effects of the present utility model are as follows: The connection between the cross beam and the support leg is fixedly connected from the inside of the connection part through the cooperation of the headless bolt, the lock block, the perforation and the lock groove. Only one perforation for operating the headless bolt needs to be left on the cross beam. The perforation can be opened inward or blocked with the same-color sealing mud after assembly, without the need to wrap external hardware connectors, resulting in a better appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a three-dimensional structural schematic diagram of a furniture cross beam connection structure.

[0010] Figure 2 is an installation schematic diagram of the support leg, the cross beam and the lock block.

[0011] Figure 3 is Figure 2 an enlarged view of part A of

[0012] Figure 4 is an installation schematic diagram of the headless bolt.

[0013] Figure 5 is an installation schematic diagram of the connecting beam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following describes the present utility model in detail with reference to the drawings and specific embodiments.

[0015] As shown in the attached Figures 1-5A connecting structure of a furniture crossbeam 2 is shown, which includes a support leg 1 and a crossbeam 2. A connecting portion 3 with the same shape as the crossbeam 2 is provided on one side of the support leg 1. Both the crossbeam 2 and the connecting portion 3 are hollow structures. A lock groove 4 with a "U"-shaped cross-section is fixedly installed inside the connecting portion 3. The "U"-shaped opening of the lock groove 4 faces the side of the perforation 5, facilitating the insertion of the headless bolt 6. The lock groove 4 extends outside the connecting portion 3 to form a first protruding portion 7. A notch 8 is provided on the upper surface of the "U"-shaped structure of the first protruding portion 7. A lock block 9 is installed in the notch 8. A threaded hole 10 is provided on the lock block 9. A first tightening inclined surface 11 is provided on the notch 8. A second tightening inclined surface 12 is provided on the lock block 9. The first tightening inclined surface 11 and the second tightening inclined surface 12 are parallel and in contact with each other. Both the first tightening inclined surface 11 and the second tightening inclined surface 12 are inclined towards the support leg 1 side in the direction of the headless bolt 6, so that when the headless bolt 6 is tightened, the lock groove 4 can be forced to drive the support leg 1 and the crossbeam 2 to approach and tighten each other through the interaction of the first tightening inclined surface 11 and the second tightening inclined surface 12. A perforation 5 matching the threaded hole 10 is provided on the crossbeam 2. A limiting groove 13 with a "U"-shaped cross-section is fixedly installed inside the crossbeam 2. The limiting groove 13 extends outside the crossbeam 2 to form a second protruding portion 14. The first protruding portion 7 is inserted into the crossbeam 2 until the crossbeam 2 contacts the connecting portion 3. The crossbeam 2 is fixedly connected to the support leg 1 by passing the headless bolt 6 through the perforation 5 and threadedly connecting it to the threaded hole 10. The end of one end of the headless bolt 6 remains at the perforation 5. The second protruding portion 14 is inserted into the connecting portion 3 and blocks the threaded hole 10 of the lock block 9. The headless bolt 6 is located on the other side of the lock block 9 relative to the limiting groove 13. The limiting of the limiting groove 13 prevents the headless bolt 6 from extending excessively into the crossbeam 2 and disengaging from the perforation 5.

[0016] As a preferred embodiment, a supporting platform 15 parallel to the tabletop is fixedly installed at the top of the support leg 1. An installation groove 16 is fixedly installed at the top of the support leg 1. A connecting beam 17 is fixedly installed on the installation groove 16.

[0017] The assembly method of the connecting structure of the furniture crossbeam 2 provided in this embodiment is as shown in the attached Figure 2 、 4 and Figure 5. First, the lock block 9 is placed into the notch 8. Then, the crossbeam 2 and the support leg 1 are brought closer to each other so that the first protruding portion 7 is inserted into the crossbeam 2. At the same time, the second protruding portion 14 is inserted into the connecting portion 3. The lock groove 4 and the limiting groove 13 are arranged back to back so as to block the threaded hole 10 of the lock block 9. A headless bolt 6 with a suitable length is passed through the perforation 5 and tightened into the threaded hole 10. Continuing to tighten the headless bolt 6, the interaction between the lock block 9 and the lock groove 4 will gradually tighten the connection position between the crossbeam 2 and the support leg 1, making the crossbeam 2 and the support leg 1 fixedly connected to each other. Finally, the connecting beam 17 is installed on the installation groove 16 using bolts to complete the assembly. After the assembly is completed, the perforation 5 can be blocked with the same-color sealing mud to form a hidden connection.

[0018] The above-described embodiments merely represent one implementation mode of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A connecting structure for a furniture crossbeam (2), comprising a support leg (1) and a crossbeam (2), characterized in that, On one side of the support leg (1), there is a connecting part (3) having the same shape as the cross beam (2). Both the cross beam (2) and the connecting part (3) are hollow structures. A locking groove (4) is fixedly installed inside the connecting part (3). The locking groove (4) extends outside the connecting part (3) to form a first protruding part (7). A notch (8) is provided on the first protruding part (7). A locking block (9) is installed in the notch (8). A threaded hole (10) is provided on the locking block (9). A through hole (5) matching the threaded hole (10) is provided on the cross beam (2). The first protruding part (7) is inserted into the cross beam (2) until the cross beam (2) contacts the connecting part (3). The cross beam (2) is fixedly connected to the support leg (1) by a headless bolt (6) passing through the through hole (5) and being threadedly connected to the threaded hole (10) at the same time.

2. The connecting structure of a furniture crossbeam (2) according to claim 1, characterized in that, A first tightening slope (11) is provided on the notch (8). A second tightening slope (12) is provided on the locking block (9). The first tightening slope (11) and the second tightening slope (12) are parallel and in contact with each other. Both the first tightening slope (11) and the second tightening slope (12) are inclined towards the support leg (1) in the direction of the headless bolt (6).

3. A connecting structure for a furniture crossbeam (2) according to claim 2, characterized in that, A limiting groove (13) is fixedly installed inside the cross beam (2). The limiting groove (13) extends outside the cross beam (2) to form a second protruding part (14). The second protruding part (14) is inserted into the connecting part (3) and blocks the threaded hole (10) of the locking block (9). The headless bolt (6) is located on the other side of the locking block (9) relative to the limiting groove (13).

4. A connecting structure of a furniture crossbeam (2) according to claim 3, characterized in that A supporting platform (15) parallel to the table top is fixedly installed at the top of the support leg (1).

5. A connecting structure of a furniture crossbeam (2) according to claim 3, characterized in that, An installation groove (16) is fixedly installed at the top of the support leg (1). A connecting beam (17) is fixedly installed on the installation groove (16).

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