Joint-free clamping structure for cross beam and pull rod of table leg

Abstract

The utility model relates to a joint-free clamping structure for a cross beam and a pull rod of a table leg, which is characterized in that a composite hole is formed in the cross beam, so that the pull rod is easy to observe during installation, and the assembly efficiency is greatly improved; the clamping tooth structure and the clamping tooth groove structure which are matched with each other are arranged on the cross beam and the pull rod respectively, so that the pull rod can be stably clamped on the cross beam and has good bearing performance; the end portion of the pull rod is of an up-and-down flush structure, and the tripping phenomenon between the pull rod and the cross beam is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a clamping structure of a crossbeam and a pull rod of a table foot. Background Art

[0002] The crossbeam and the pull rod of the existing steel-wood structure table are usually assembled together by connecting parts, such as the technical solution disclosed in patent CN215014458U. However, this technology has many parts and cumbersome installation steps, resulting in high cost and low efficiency. Patent CN220713209U discloses a technical solution that uses a clamping structure to connect the crossbeam and the pull rod. In this technical solution, an opening is provided on the inner side surface of the crossbeam, and a limiting groove is provided on the top surface. The upper and lower sides of the end of the support beam (i.e., the pull rod) are respectively provided with a protruding portion with a tenon and a protruding portion with a clamping groove. In this way, the crossbeam and the support beam are assembled together by inserting the tenon into the limiting groove, extending the protruding portion into the crossbeam from the opening, and clamping the side wall of the crossbeam into the clamping groove. However, this technology still has the following technical problems during use:

[0003] First, if the patent specification is attached Figure 1 , 2 As shown, the upper and lower sides of the end of the support beam are not of the same length, and the convex portion on the lower side is shorter. When the end of the support beam is inserted into the cross beam, the insertion depth of the convex portion on the lower side of the support beam inside the cross beam is shallow, so that the top and bottom surfaces of the cross beam cannot form a good limit for the convex portion. Therefore, during transportation, the convex portion on the lower side of the support beam is easy to slip out of the opening of the cross beam, making it easy for the support beam and the cross beam to be disengaged. Therefore, it is necessary to open screw holes and install screws on the upper and lower sides of the support beam to fix it, which increases the manufacturing process and parts, thereby increasing the production cost.

[0004] Second, as the instructions attached Figure 2 As shown, the slot crosses the entire width of the bottom plate of the support beam, so that the convex portion is disconnected from the bottom plate of the support beam. In this way, when in use, the weight of the table top is transferred from the top surface of the support beam to the side wall of the support beam, and then from the side wall of the support beam to the crossbeam. The bottom plate of the support beam can hardly play a supporting role. Therefore, the load-bearing capacity of the support beam is poor. If it is used for a larger table, multiple support beams need to be installed to make the table stable, which makes the production cost of the table higher.

[0005] Third, during assembly, the end of the support beam is inserted into the opening of the cross beam, and it is not easy for workers to observe the slot at the bottom of the support beam. In order to facilitate observation, this technology opens an observation port on the side wall of the support beam, but the field of view of the observation port is narrow. When workers assemble the cross beam and the support beam, there is still a technical problem that the slot is difficult to align with the opening, and the assembly efficiency is low. Moreover, the setting of the observation port will not only increase the processing steps and increase the production cost, but will also further weaken the mechanical strength of the support beam and reduce its load-bearing performance. Utility Model Content

[0006] The purpose of the utility model is to solve the above-mentioned problems and shortcomings, and to provide a jointless clamping structure for the crossbeam and the pull rod of the table leg. By arranging a composite hole on the crossbeam, the pull rod is easy to observe during installation, thereby greatly improving the assembly efficiency; by respectively arranging mutually matching tooth structures and tooth groove structures on the crossbeam and the pull rod, the pull rod can be stably clamped on the crossbeam and have good load-bearing performance; the ends of the pull rod are flush structures up and down, which effectively prevents the pull rod from being disengaged from the crossbeam.

[0007] The technical solution of the utility model is achieved as follows: a jointless clamping structure of a crossbeam and a pull rod of a table leg, comprising a crossbeam and a pull rod, wherein the end of the pull rod is clamped together with the side portion of the crossbeam; its characteristics are: a composite hole is also provided on the crossbeam, and the composite hole is composed of a side hole arranged on the side of the crossbeam and a top hole arranged on the top surface of the crossbeam, and the side hole and the top hole are connected as one; a tooth hole is also provided on the top surface of the crossbeam located beside the top hole, and a latching tooth structure is also provided on the bottom edge of the side hole; the end of the crossbeam is an end structure with a trapezoidal bayonet in the middle and flush with the upper and lower parts, a trapezoidal socket portion clamped together with the composite hole is formed below the trapezoidal socket, a convex tooth portion clamped with the tooth hole is also formed above the trapezoidal socket, and the bottom surface of the trapezoidal socket portion is also provided with a latching tooth groove structure matched with the latching tooth structure.

[0008] Furthermore, the latching tooth structure is composed of a latching tooth portion arranged on the bottom edge of the side hole and a tooth groove arranged between the latching tooth portions.

[0009] Furthermore, the latching tooth groove structure is composed of a first latching tooth hole arranged in the middle of the bottom surface of the trapezoidal sleeve connecting portion, and corner tooth holes respectively arranged on the corners of both sides of the trapezoidal sleeve connecting portion.

[0010] Furthermore, the latching tooth portion is a trapezoidal structure that is narrow at the top and wide at the bottom.

[0011] Furthermore, the inner side of the convex tooth portion is an arc-shaped structure.

[0012] Furthermore, a screw hole is provided on the bottom surface of the trapezoidal sleeve portion.

[0013] Beneficial effects of the utility model:

[0014] First, the end of the pull rod is a flush structure, so that after the pull rod is clamped onto the beam, the tooth portion of the pull rod end is inserted into the tooth hole, and the tooth groove structure and the tooth structure are embedded together, so that the upper side of the pull rod end is buckled over the entire width direction of the beam, and at the same time, the trapezoidal sleeve portion on the lower side of the pull rod end is inserted into the deep part of the inner cavity of the beam; when the trapezoidal sleeve portion moves in the vertical direction, its upper and lower sides will be limited by the top and bottom surfaces of the beam, so that it is not easy to slip out of the composite hole, and has a very reliable connection performance; therefore, the utility model only needs to set a locking screw at the end of the pull rod, so as to firmly lock and assemble the pull rod and the beam together, thereby saving manufacturing processes and parts, and effectively reducing production costs.

[0015] Secondly, the side surface of the crossbeam and the trapezoidal socket portion on the lower side of the end of the pull rod are clamped together through the tooth structure and the tooth groove structure. This can increase the working surface between the two on the one hand, so that the two form a more solid connection structure in the front, back, left and right directions; on the other hand, it can also reduce the damaged area of ​​the crossbeam and the pull rod main body material, so that the crossbeam and the pull rod maintain good load-bearing performance, especially the bottom of the trapezoidal socket portion can maintain an integrated structure with the bottom of the pull rod, thereby ensuring the load-bearing performance of the pull rod. Even if only one pull rod is installed between the two crossbeams, it has sufficient load-bearing capacity, thereby greatly reducing the manufacturing cost of the table.

[0016] In addition, since the composite hole connects the side and top surfaces of the crossbeam, this provides a more flexible operating space for inserting the end of the pull rod into the crossbeam, and workers can easily observe the positioning of the tooth structure and the tooth groove structure from above, thereby quickly completing the assembly of the crossbeam and the pull rod, greatly improving the production efficiency of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the split structure of the utility model. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0020] like Figure 1 , 2As shown, the utility model provides a crossbeam and tie rod jointless clamping structure of a table leg, including a crossbeam trapezoidal sleeve portion 10 and a tie rod trapezoidal sleeve portion 20, wherein the end of the tie rod trapezoidal sleeve portion 20 is clamped together with the side of the crossbeam trapezoidal sleeve portion 10; in order to achieve the purpose proposed by the utility model, the crossbeam trapezoidal sleeve portion 10 is also provided with a composite hole trapezoidal sleeve portion 1 The composite hole trapezoidal sleeve part 1 is composed of a side hole trapezoidal sleeve part 11 arranged on the side of the cross beam trapezoidal sleeve part 10 and a top hole trapezoidal sleeve part 12 arranged on the top surface of the cross beam trapezoidal sleeve part 10, and the side hole trapezoidal sleeve part 11 and the top hole trapezoidal sleeve part 12 are connected as one; the cross beam trapezoidal sleeve part located on the side of the top hole trapezoidal sleeve part 12 is connected to the cross beam trapezoidal sleeve part 10. The top surface of the trapezoidal sleeve part 10 is also provided with a tooth hole trapezoidal sleeve part 2, and the bottom edge of the side hole trapezoidal sleeve part 11 is also provided with a tooth structure trapezoidal sleeve part 13 trapezoidal sleeve part; the end of the trapezoidal sleeve part 10 of the cross beam is an end structure with a trapezoidal bayonet trapezoidal sleeve part 30 in the middle and flush with the upper and lower parts, and a trapezoidal sleeve part with a composite hole is formed below the trapezoidal bayonet trapezoidal sleeve part 30. 1 trapezoidal sleeve part and the trapezoidal sleeve part 3 are clipped together, and a convex tooth part, a trapezoidal sleeve part 4, which is clipped with the tooth hole trapezoidal sleeve part 2, is formed above the trapezoidal bayonet trapezoidal sleeve part 30. The bottom surface of the trapezoidal sleeve part and the trapezoidal sleeve part 3 is also provided with a trapezoidal sleeve part 31 with a clip groove structure that is clipped together with the clip structure trapezoidal sleeve part 13. Through the above structure, the pull rod 20 can be quickly clipped into the cross beam 10, and the clip structure has a very reliable load-bearing performance and stability, reducing the use of the pull rod 20, which can not only greatly reduce the production cost, but also make the overall shape of the table more concise. The trapezoidal sleeve portion 10 of the cross beam, the trapezoidal sleeve portion, and the pull rod 20 are all processed by laser cutting method, so that the side hole 11, the top hole 12, the latch structure 13, the trapezoidal buckle 30, the trapezoidal sleeve portion 3, the convex tooth portion 4, and the latch groove structure 31 can be processed very accurately, so that when the cross beam 10 and the pull rod 20 are assembled, the gap between the various latching structures is small and the friction is small, so that the assembly accuracy and stability between the two are high, which greatly improves the production efficiency and product quality.

[0021] like Figure 2As shown, the trapezoidal socket part 13 of the latching tooth structure is composed of a trapezoidal socket part 131 arranged on the bottom edge of the trapezoidal socket part of the side hole trapezoidal socket part 11 and a tooth groove trapezoidal socket part 132 arranged between the trapezoidal socket part 131 of the latching tooth part and the trapezoidal socket part 131 of the latching tooth part; through the cooperation between the latching tooth part 131 and the tooth groove 132, when the latching tooth part 131 is inserted into the latching tooth groove 31, the tooth groove 132 and the bottom of the trapezoidal socket part 3 of the trapezoidal socket part are tightly fitted, so that there is a sufficient contact area between the bottom of the side hole 11 and the trapezoidal socket part 3, thereby ensuring the stability of the connection between the two.

[0022] like Figure 2 As shown, the trapezoidal socket part 31 of the latching tooth groove structure is composed of a first latching tooth hole trapezoidal socket part 311 arranged in the middle of the bottom surface of the trapezoidal socket part 3, and a corner tooth hole trapezoidal socket part 312 trapezoidal socket part respectively arranged on the corners of the trapezoidal socket part 3 on both sides; in this way, the latching tooth part 131 is inserted into the first latching tooth hole trapezoidal socket part 311 and the corner tooth hole trapezoidal socket part 312 to form multiple action points, especially the corner tooth hole 312 can also limit the latching tooth part 131 in the vertical direction, so that the bottom of the side hole 11 and the trapezoidal socket part 3 are more firmly connected and less likely to shift.

[0023] like Figure 2 As shown, the trapezoidal sleeve portion 131 of the latching tooth portion is a trapezoidal structure narrow at the top and wide at the bottom. In this way, during assembly, the latching tooth portion 131 is more easily inserted into the trapezoidal sleeve portion 311 of the first latching tooth hole and the trapezoidal sleeve portion 312 of the corner tooth hole, thereby greatly improving production efficiency.

[0024] like Figure 2 As shown, the inner side of the trapezoidal sleeve portion of the convex tooth portion 4 is an arc-shaped structure, so that the convex tooth portion 4 can be inserted into the trapezoidal sleeve portion of the tooth hole 2 more smoothly, thereby improving production efficiency.

[0025] like Figure 2 As shown, the bottom surface of the trapezoidal socket part 3 is also provided with a screw hole trapezoidal socket part 32, so that when the pull rod 20 is inserted into the beam 10, the beam 10 and the pull rod 20 are locked by screws, thereby further enhancing the stability of the connection between the two.

[0026] If the table is small, only one pull rod 20 and two beams 10 are needed to form the table frame; Figure 2As shown, when the table is long and multiple groups of crossbeams 10 and tie rods 20 need to be assembled together, the crossbeam 10 in the middle needs to support two tie rods 20, so only one side hole 11 is opened on each of the left and right sides and two groups of top holes 12 are opened on the top surface; correspondingly, the trapezoidal bayonet 30 at the end of the tie rod 20 is shortened to 1 / 2 of the width of the crossbeam 10, so that the tie rods 20 on the left and right sides of the middle crossbeam 10 can be snapped into the crossbeam 10; at this time, the middle crossbeam 10 and the tie rods 20 on the left and right sides can be inserted through the convex tooth portion trapezoidal socket portion 4 The trapezoidal socket part 2 is inserted into the trapezoidal socket part of the tooth hole, the trapezoidal socket part 131 is inserted into the first tooth hole 311 and the corner tooth hole 312 and clamped together, thereby splicing out a table frame suitable for the trapezoidal socket part of a larger table, such as the trapezoidal socket part of a large conference table; except for the cross beams 10 and the pull rods 20 on the left and right sides, the structures of the cross beams 10 and the pull rods 20 in the middle are the same, so that table frames of different lengths can be assembled very conveniently, which helps to improve the application range of the product, reduce inventory, and improve the competitiveness and economic benefits of the enterprise.

Claims

1. A crossbeam and pull rod jointless connection structure of a table leg, comprising a crossbeam (10) and a pull rod (20), wherein the end of the pull rod (20) is connected to the side of the crossbeam (10); characterized in that: The crossbeam (10) is also provided with a composite hole (1), the composite hole (1) being composed of a side hole (11) provided on the side of the crossbeam (10) and a top hole (12) provided on the top surface of the crossbeam (10), and the side hole (11) and the top hole (12) are connected as one body; a tooth hole (2) is also provided on the top surface of the crossbeam (10) located beside the top hole (12), and a latching tooth structure (13) is also provided on the bottom edge of the side hole (11); the crossbeam (10) is provided with a tooth hole (2) on the top surface of the crossbeam (10) located beside the top hole (12); The end of the beam (10) is an end structure with a trapezoidal bayonet (30) in the middle and flush with the top and bottom. A trapezoidal sleeve connection portion (3) is formed below the trapezoidal bayonet (30) and is sleeved with the composite hole (1). A convex tooth portion (4) is formed above the trapezoidal bayonet (30) and is snapped with the tooth hole (2). The bottom surface of the trapezoidal sleeve connection portion (3) is also provided with a snap-fit ​​tooth groove structure (31) that is matched and snapped with the snap-fit ​​tooth structure (13).

2. The jointless clamping structure between the crossbeam and the pull rod of the table leg according to claim 1 is characterized in that: The latching tooth structure (13) is composed of a latching tooth portion (131) arranged on the bottom edge of the side hole (11) and a tooth groove (132) arranged between the latching tooth portion (131).

3. The jointless clamping structure between the crossbeam and the pull rod of the table leg according to claim 2 is characterized in that: The latching tooth groove structure (31) is composed of a first latching tooth hole (311) arranged in the middle of the bottom surface of the trapezoidal sleeve connection portion (3), and corner tooth holes (312) respectively arranged on the corners of both sides of the trapezoidal sleeve connection portion (3).

4. The jointless clamping structure between the crossbeam and the pull rod of the table leg according to claim 2 is characterized in that: The latching tooth portion (131) is a trapezoidal structure that is narrow at the top and wide at the bottom.

5. The jointless clamping structure between the crossbeam and the pull rod of the table leg according to claim 1 is characterized in that: The inner side of the convex tooth portion (4) is an arc-shaped structure.

6. The jointless clamping structure between the crossbeam and the pull rod of the table leg according to claim 1 is characterized in that: The bottom surface of the trapezoidal sleeve portion (3) is also provided with a screw hole (32).

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