Swivel chair foot connecting device

Abstract

The utility model discloses a swivel chair foot connecting device, including center pole and the butt joint pole of center pole lower extreme fixed mounting, the outside of center pole and butt joint pole is equipped with conical bearing, and the outside of conical bearing and butt joint pole is equipped with the installation cone cover, and the lower extreme fixed mounting of installation cone cover has the mounting piece. This swivel chair foot connecting device, inside and outside simple structure can produce in batches, guarantee the stability of its support while guaranteeing the device aesthetic property, and the quick assembly of the device is convenient, effectively improved the convenience of the connecting device use, through the fixed screw arc limiting piece and is positioned, can make arc limiting piece and support leg fixed in the outside of installation cone cover, and utilize the lower end inclination of support leg setting, can guarantee the stability and aesthetic property of the connecting device support.

Description

Technical Field

[0001] This utility model relates to the field of swivel chair leg connection technology, specifically a swivel chair leg connection device. Background Technology

[0002] A swivel chair is a common office chair. Its lower end is supported by a leg connection device, which typically consists of a main support rod and support legs. This device ensures the chair's normal rotation and operation. However, existing designs directly connect the legs, resulting in poor stability. A connection problem in one leg can significantly affect the connections of other legs and the gas spring, directly impacting the chair's usability.

[0003] Patent CN205814026U discloses a connecting structure for a swivel chair leg, including an annular intermediate connecting body. A connecting plate, integral with the intermediate connecting body, is provided on the outer ring of the intermediate connecting body. A side connecting body, perpendicular to the outer circumference of the intermediate connecting body, is connected via the connecting plate. The side connecting body includes a main body with a bottom and two sides. To simplify the process and reduce costs, the connecting plate and the side connecting bodies are directly welded together. However, this results in exposed welding marks, affecting aesthetics. The bottom of the main body extends to both sides, with the extensions flush with the edges of the connecting plate. The swivel chair leg fits into the main body, effectively concealing the welding marks. The structure is simple, easy to install and disassemble. The side connecting bodies connect the swivel chair legs to the intermediate connecting body, ensuring that each swivel chair leg is independent and does not affect the others, thus improving overall stability.

[0004] In the aforementioned patent, the connecting structure of the swivel chair legs solves the problems mentioned above. However, the connecting structure of the swivel chair legs in this patent still has the following problems: during the use of the connecting structure of the swivel chair legs, it is necessary to adjust the side and bottom structures of the support legs by using upper and lower locking parts. The support legs are provided in multiple sets on the outside of the middle connecting body. During the adjustment process, they need to be adjusted manually one by one, which increases the complexity of the use of the connecting structure of the swivel chair legs. At the same time, it is necessary to support the human body during use, and the support legs are hollow structures, which can easily affect the stability of the support legs.

[0005] To address the aforementioned issues, an innovative design is urgently needed based on the existing swivel chair leg connection device structure. Utility Model Content

[0006] The purpose of this utility model is to provide a swivel chair leg connecting device to solve the problem that, in the process of using the swivel chair leg connecting structure mentioned in the background art, it is necessary to adjust the side and bottom structure of the support leg through upper and lower locking parts. The support leg is provided in multiple sets on the outside of the middle connecting body, and manual adjustment is required in sequence, which increases the complexity of the swivel chair leg connecting structure. At the same time, it is necessary to support the human body during use, and the support leg is a hollow structure, which can easily affect the stability of the support leg.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a swivel chair leg connecting device, comprising a central rod and a connecting rod fixedly installed at the lower end of the central rod;

[0008] The outer sides of the central rod and the connecting rod are fitted with tapered bearings, and the outer sides of the tapered bearings and the connecting rod are fitted with mounting tapered sleeves, and the lower end of the mounting tapered sleeve is fixedly fitted with an installation component.

[0009] The outer side of the mounting cone sleeve is provided with a support structure to control the stability of the swivel chair leg connection, and the outer side of the mounting cone sleeve is provided with a stable docking structure.

[0010] Preferably, the support structure includes an arc-shaped limiting member, which engages with the outer side of the mounting cone sleeve. The arc-shaped limiting member and the mounting cone sleeve are provided with positioning holes and limiting holes, and the positioning holes and limiting holes are aligned.

[0011] Preferably, the support structure further includes a support leg, which is fixedly installed on the side of the arc-shaped limiting member away from the mounting cone sleeve, and the support leg is inclined on the outside of the arc-shaped limiting member, while the lower end of the support leg is designed with a horizontal structure.

[0012] Preferably, the internal threads of the positioning hole and the limiting hole are fitted with fixing screws, and four sets of fixing screws, arc-shaped limiting parts and support legs are arranged at equal angles on the outer side of the mounting cone sleeve.

[0013] Preferably, the docking structure includes a limiting plate and a limiting groove, and the limiting plate is fixedly installed on the outside of the arc-shaped limiting member, and the limiting groove is opened inside the end of the arc-shaped limiting member away from the limiting plate. At the same time, the limiting plate is engaged with the limiting groove opened inside another set of arc-shaped limiting members.

[0014] Preferably, the docking structure further includes docking components, and two sets of docking components are fixedly installed at the lower end of the arc-shaped limiting component, and the docking components have a ring-shaped structure when viewed from above.

[0015] Preferably, the docking parts are engaged with the mounting parts, and the two sets of docking parts are located on the outside of the mounting parts, and the two sets of docking parts form a ring shape when viewed from above.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The swivel chair leg connecting device has a simple internal and external structure, which can be mass-produced. It ensures the aesthetics of the device while maintaining its stability, and facilitates rapid assembly, effectively improving the ease of use of the connecting device.

[0018] 2. Furthermore, by using fixing screws to limit the arc-shaped limiting component, the arc-shaped limiting component and the support leg can be fixed on the outside of the mounting cone sleeve. Moreover, by using the inclined setting of the lower end of the support leg, the stability and aesthetics of the connecting device can be guaranteed.

[0019] 3. Furthermore, by setting the limiting plate and the limiting groove, the two adjacent sets of arc-shaped limiting parts can limit each other, ensuring the stability of the connection between the arc-shaped limiting parts, and reducing the stress on the fixing screws, thus ensuring the support strength of the connecting device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model from below;

[0021] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention viewed from below;

[0023] Figure 4 This is a top-view three-dimensional structural diagram of the installation cone sleeve of this utility model;

[0024] Figure 5 This is a top-view three-dimensional structural diagram of the tapered bearing of this utility model;

[0025] Figure 6 This is a top-view three-dimensional structural diagram of the support leg of this utility model.

[0026] In the diagram: 1. Center rod; 2. Connecting rod; 3. Tapered bearing; 4. Mounting component; 5. Mounting tapered sleeve; 6. Arc-shaped limiting component; 7. Support leg; 8. Connecting component; 9. Positioning hole; 10. Fixing screw; 11. Limiting plate; 12. Limiting groove; 13. Limiting hole. Detailed Implementation

[0027] 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.

[0028] Example 1: In a specific embodiment, this utility model provides a technical solution: a swivel chair leg connecting device, such as... Figures 1-3 The basic usage process of the swivel chair leg connecting device is shown in the figure.

[0029] The center rod 1 and the connecting rod 2 fixedly installed at the lower end of the center rod 1 are provided with a tapered bearing 3 on the outer side of the center rod 1 and the connecting rod 2. The tapered bearing 3 and the connecting rod 2 are provided with a mounting tapered sleeve 5 on the outer side of the tapered bearing 3 and the connecting rod 2. The lower end of the mounting tapered sleeve 5 is fixedly installed with a mounting part 4. There is no welding slag in the internal thread hole, and the thread is flat and burr-free.

[0030] When using this swivel chair leg connecting device, the internal structure of the connecting device needs to be installed sequentially from the inside to the outside. After installation, the device can be installed at the lower end of the swivel chair. During the use of the device, the lower end of the support leg 7 contacts the ground, and the center rod 1 and the connecting rod 2 can rotate inside the mounting cone sleeve 5 through the tapered bearing 3, so that the swivel chair rotates under the action of the center rod 1, completing the normal rotation process of the swivel chair. This completes the basic use process of the connecting device.

[0031] Example 2: In one specific embodiment, such as Figures 1-5 The basic assembly and support process of the swivel chair is shown in the figure.

[0032] The outer side of the mounting cone sleeve 5 is provided with a support structure to control the stability of the swivel chair legs. The support structure includes an arc-shaped limiting member 6, which engages with the outer side of the mounting cone sleeve 5. The arc-shaped limiting member 6 and the mounting cone sleeve 5 have positioning holes 9 and limiting holes 13 inside, and the positioning holes 9 and limiting holes 13 are aligned. The support structure also includes a support leg 7, which is fixedly installed on the side of the arc-shaped limiting member 6 away from the mounting cone sleeve 5. The support leg 7 is inclined on the outer side of the arc-shaped limiting member 6, and the lower end of the support leg 7 is horizontal. Fixing screws 10 are installed in the internal threads of the positioning holes 9 and limiting holes 13. There are four sets of fixing screws 10, arc-shaped limiting member 6, and support legs 7 at equal angles on the outer side of the mounting cone sleeve 5. The hole position tolerance of the positioning holes 9 and limiting holes 13 is ±0.5MM, and the part size tolerance is ±1MM.

[0033] When using this swivel chair leg connecting device, the tapered bearing 3 needs to be sleeved on the outside of the center rod 1 and the connecting rod 2. Then, the mounting tapered sleeve 5 can be sleeved on the outside of the center rod 1 and the connecting rod 2. At this time, the arc-shaped limiting piece 6 can be connected with the outside of the mounting tapered sleeve 5. During the connection process, the positioning hole 9 needs to be aligned with the limiting hole 13. Then, the fixing screw 10 can be installed inside the positioning hole 9 and the limiting hole 13, thereby completing the assembly process of the connecting device and effectively improving the stability of the supporting device.

[0034] Example 3: Based on the above examples, such as... Figures 1-6 As shown, the process of stable support by the support leg 7 is disclosed;

[0035] A stable docking structure is provided on the outer side of the mounting cone sleeve 5. The docking structure includes a limiting plate 11 and a limiting groove 12. The limiting plate 11 is fixedly installed on the outer side of the arc-shaped limiting member 6, and the limiting groove 12 is opened inside the end of the arc-shaped limiting member 6 away from the limiting plate 11. At the same time, the limiting plate 11 is engaged with the limiting groove 12 opened inside another set of arc-shaped limiting members 6. The docking structure also includes docking members 8, and two sets of docking members 8 are fixedly installed at the lower end of the arc-shaped limiting member 6. The docking members 8 have a ring-shaped structure when viewed from above. The docking members 8 are engaged with the mounting member 4, and the two sets of docking members 8 are located on the outer side of the mounting member 4. The two sets of docking members 8 have a ring-shaped structure when viewed from above. The weld points of the arc-shaped limiting member 6, the support leg 7 and the docking members 8 need to be ground flat and smooth, without bubbles. The pipe opening is ground with a 2-4 mm rounded corner and without burrs.

[0036] When using this swivel chair leg connecting device, the mounting cone sleeve 5 needs to be aligned with the arc-shaped limiting member 6. Before aligning the mounting cone sleeve 5 with the arc-shaped limiting member 6, the four sets of arc-shaped limiting members 6 need to be aligned with each other. At this time, the limiting plate 11 and the limiting groove 12 need to be engaged between the two sets of arc-shaped limiting members 6. After the engagement is completed, the four sets of arc-shaped limiting members 6 will form an annular cylinder. At this time, the four sets of arc-shaped limiting members 6 can be fitted on the outside of the mounting cone sleeve 5. By using the engagement between the four sets of limiting plates 11 and the limiting groove 12, the four sets of arc-shaped limiting members 6 can be mutually limited, ensuring the strength of the arc-shaped limiting members 6 under force, while reducing the stress on the fixing screw 10. Furthermore, by using the docking member 8 to engage with the mounting member 4, the stability of the internal structure of the connecting device can be ensured, increasing the overall practicality.

[0037] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0038] 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 swivel chair leg connecting device, comprising a central rod (1) and a connecting rod (2) fixedly installed at the lower end of the central rod (1); characterized in that A tapered bearing (3) is sleeved on the outer side of the center rod (1) and the connecting rod (2), and a mounting tapered sleeve (5) is sleeved on the outer side of the tapered bearing (3) and the connecting rod (2), and a mounting component (4) is fixedly installed at the lower end of the mounting tapered sleeve (5). The outer side of the mounting cone sleeve (5) is provided with a support structure to control the stability of the swivel chair leg connection, and the outer side of the mounting cone sleeve (5) is provided with a stable docking structure.

2. The swivel chair foot coupling device of claim 1, wherein: The support structure includes an arc-shaped limiting member (6), which is engaged on the outside of the mounting cone sleeve (5). The arc-shaped limiting member (6) and the mounting cone sleeve (5) are provided with a positioning hole (9) and a limiting hole (13), and the positioning hole (9) and the limiting hole (13) are aligned.

3. The swivel chair foot coupling device of claim 2, wherein: The support structure also includes a support leg (7), and the support leg (7) is fixedly installed on the side of the arc-shaped limiting member (6) away from the mounting cone sleeve (5), and the support leg (7) is inclined on the outside of the arc-shaped limiting member (6), while the lower end of the support leg (7) is designed with a horizontal structure.

4. The swivel chair foot coupling device of claim 3, wherein: The internal threads of the positioning hole (9) and the limiting hole (13) are fitted with fixing screws (10), and the fixing screws (10), the arc-shaped limiting piece (6) and the support leg (7) are arranged in four sets at equal angles on the outside of the mounting cone sleeve (5).

5. The swivel chair foot coupling device of claim 4, wherein: The docking structure includes a limiting plate (11) and a limiting groove (12). The limiting plate (11) is fixedly installed on the outside of the arc-shaped limiting member (6), and the limiting groove (12) is opened inside the arc-shaped limiting member (6) away from the limiting plate (11). At the same time, the limiting plate (11) is engaged with the limiting groove (12) opened inside another set of arc-shaped limiting members (6).

6. A swivel chair foot coupling device as defined in claim 5 wherein: The docking structure also includes docking parts (8), and two sets of docking parts (8) are fixedly installed at the lower end of the arc-shaped limiting part (6), and the docking parts (8) have a ring-shaped structure when viewed from above.

7. The swivel chair foot coupling device of claim 6, wherein: The docking parts (8) are engaged with the mounting parts (4), and the two sets of docking parts (8) are located on the outside of the mounting parts (4), and the two sets of docking parts (8) form a ring-shaped structure when viewed from above.

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