Business seat underframe with rotation limiting function

Abstract

The utility model discloses a business seat underframe with a rotary limiting function, and relates to the technical field of high-speed rail seats. A business seat underframe with a rotary limiting function comprises a fixed support, an upper supporting plate, a rotary disc, a rotary component, a mortise lock module and a mortise lock protection module. The business seat is fixed on the turntable; the upper supporting plate is fixed on the fixed bracket; the turntable is rotationally connected to the top surface of the upper supporting plate through a rotary component; the top of the upper supporting plate is provided with a mortise lock module on each of the two sides of the rotary component. According to the business seat bottom frame with the rotation limiting function, the mortise lock protection module is additionally arranged, in the rotating operation process of the business seat body, the mortise lock protection module can effectively absorb most of impact force borne by a lock head and a lock groove, impact directly acting on a lock pin assembly and a lock seat is reduced, and the service life of the business seat body is prolonged. The reliability of the lock pin is greatly improved, the service life of the lock pin and the lock groove is prolonged, and the reliability of the lock pin is improved.

Description

Technical Field

[0001] This utility model relates to the field of high-speed rail seat technology, specifically to a business seat base frame with rotation limit. Background Technology

[0002] Currently, during the return journey of a high-speed train, there are situations where the direction of travel of the high-speed train is opposite to the direction of travel of the passengers. Usually, when the high-speed train is going out, passengers face the direction of travel, but if the seat direction remains the same on the return journey, passengers will be sitting with their backs to the direction of travel.

[0003] To avoid discomfort for passengers traveling in the opposite direction to the high-speed train's direction of travel, the business class seats need to be rotated to the opposite direction during the return journey to improve passenger comfort and experience. Therefore, business class seats on high-speed trains are generally equipped with a rotating function.

[0004] The patent application number is CN201821859032.7, and the patent name is a patent for a rotating mechanism for a business chair and a business chair having the rotating mechanism. It specifically discloses a rotating mechanism for a business chair, including a rotating disk, a rotating bearing, and a fixed bracket fixedly connected to the body of the business chair. The fixed bracket includes a fixed disk and other structures.

[0005] Furthermore, it was also disclosed that two retractable limit pins are symmetrically installed on the bottom surface of the rotating disk, and a limit component is fixedly installed on the top surface of the fixed disk. The limit component is provided with a limit slot, and in the locked state, one of the limit pins is inserted into the limit slot.

[0006] The rotating mechanism for the business chair in the aforementioned patent, after the rotating disc drives the business chair body to rotate to the target position, a limiting pin inserts into the limiting slot to lock the position of the business chair body, preventing the business chair body from rotating again; however, the inventor believes that the aforementioned patent still has at least the following technical problems:

[0007] In the above-mentioned locking structure, when an external force pushes the business chair body to rotate to the target position, due to the large inertial force of the business chair body, when the locking pin is inserted into the locking groove, the impact force between the locking pin and the locking groove will directly act on the contact point. This frequent impact will damage the locking structure, especially the impact force when the locking pin is inserted. Repeated operation over a long period of time will affect the reliability and service life of the locking pin.

[0008] Therefore, the inventors believe that how to design solutions to the above problems, improve the reliability of the locking pin, and extend the service life of the locking pin and locking groove are technical problems that urgently need to be solved by those skilled in the art.

[0009] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0010] To address the aforementioned technical problems, this utility model provides a business chair base frame with rotation limit to solve the problems mentioned in the background art.

[0011] This utility model provides the following technical solution: a business chair base frame with rotation limit, comprising: a fixed bracket, an upper support plate, a turntable, a rotating component, a locking module, and a locking protection module; the business chair is fixed on the turntable;

[0012] The upper support plate is fixed to the fixed bracket; the turntable is connected to the top surface of the upper support plate through a rotating component;

[0013] A locking module is provided on each side of the rotating component at the top of the upper support plate;

[0014] The mortise lock module includes a locking pin assembly fixed to the bottom surface of the turntable and a locking seat fixed to the top surface of the upper support plate;

[0015] Each mortise lock module is equipped with an independent mortise lock protection module; the mortise lock protection module includes a limit block, a fixing block, and a buffer block;

[0016] The limiting block is fixed to the top surface of the upper support plate; the fixing block is fixed to the bottom surface of the turntable; and the buffer block is fixed to one side of the fixing block.

[0017] After the external force controls the turntable to rotate to the target position, the buffer block on the same side will first adhere to the side wall of the limit block; then the lock head of the locking pin assembly will be inserted into the lock groove of the lock seat.

[0018] Preferably, the lock head has a conical structure, and the head surface of the lock head is arc-shaped; the lock groove on the lock seat has a conical structure.

[0019] Preferably, the locking pin assembly includes a locking frame, a locking pin, a spring, and a locking block;

[0020] The locking block and locking frame are fixed to the bottom surface of the turntable;

[0021] The locking pin moves sequentially through the two side frames and the locking block on the lock frame, and the locking head of the locking pin extends to the outside of the locking block;

[0022] The spring is located in the lock frame and is fitted onto the lock pin; one end of the spring is fixedly connected to the lock pin, and the other end of the spring is fixedly connected to the lock frame.

[0023] Preferably, the tail of the locking pin is fixedly connected to the pull rope.

[0024] Preferably, the buffer block is made of an elastic material.

[0025] The present invention provides a business chair base frame with rotation limit, which has the following beneficial effects: The present invention designs a business chair base frame with rotation limit. By adding a locking protection module, during the rotation operation of the business chair body, the locking protection module can effectively absorb most of the impact force that should be received by the lock head and lock groove, reducing the impact directly acting on the lock pin assembly and lock seat, greatly increasing the reliability of the lock pin and extending the service life of the lock pin and lock groove, thus improving the reliability of the lock pin. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the present invention from the first angle;

[0027] Figure 2 This is a structural schematic diagram of the present invention from a second angle;

[0028] Figure 3 This is a structural diagram of the present invention from the first angle after the turntable and part of the lock protection module have been removed.

[0029] Figure 4 This is a structural diagram of the present invention from a second angle after the turntable and part of the lock protection module have been removed.

[0030] Figure 5 This is a structural diagram showing the connection between the turntable, the mortise lock module, and the mortise lock protection module in this utility model;

[0031] Figure 6 This utility model Figure 2 A magnified view of part A in the image;

[0032] Figure 7 This utility model Figure 4 A magnified view of part B in the image;

[0033] Among them, based on a better demonstration of the cooperation relationship between the locking modules, Figures 3-4 The locking module is displayed on the upper support plate. Detailed Implementation

[0034] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] See Figures 1-7 To address the problems mentioned in the background section, this utility model provides a business chair base frame with rotation limit to solve the aforementioned technical problems. The technical solution is as follows:

[0036] A business chair base frame with rotation limit includes: a fixed bracket 1, an upper support plate 2, a turntable 3, a rotating component 7, a locking module and a locking protection module; the business chair is fixed on the turntable 3; the structure of the business chair is not shown in the figures.

[0037] The rotating component 7 can be selected from components such as bearings or shafts. The selection of the rotating component 7 is existing technology and can be selected according to the actual situation. It is not a design point of this patent.

[0038] The upper support plate 2 is fixed on the fixed bracket 1; the turntable 3 is rotatably connected to the top surface of the upper support plate 2 via the rotating component 7;

[0039] A locking module is provided on each side of the rotating component 7 at the top of the upper support plate 2;

[0040] The mortise lock module includes a locking pin assembly and a lock base 12; the locking pin assembly is fixed to the bottom surface of the turntable 3, and the lock base 12 is fixed to the top surface of the upper support plate 2;

[0041] Each mortise lock module is equipped with an independent mortise lock protection module; the mortise lock protection module includes a limit block 6, a fixing block 5, and a buffer block 4;

[0042] Limiting block 6 is fixed to the top surface of upper support plate 2; fixing block 5 is fixed to the bottom surface of turntable 3; buffer block 4 is fixed to one side of fixing block 5.

[0043] After the external force controls the turntable 3 to rotate to the target position, the buffer block 4 on the same side will first adhere to the side wall of the limit block 6; then the lock head of the locking pin assembly will be inserted into the lock groove of the lock seat 12.

[0044] When the operator controls the turntable 3 to rotate to the target position, the buffer block 4 on the same side will first fit against the side wall of the limit block 6. This design effectively absorbs most of the impact force that should have been on the lock head and lock groove, reduces the impact directly acting on the lock pin assembly and lock seat, greatly increases the reliability of the lock pin and extends the service life of the lock pin and lock groove.

[0045] Meanwhile, after the business chair body rotates to the target position and the locking module completes the locking operation of the business chair body, the locking protection module on the top surface of the upper support plate 2 also limits the movement of the business chair body, reduces the amount of shaking of the business chair body, and further protects the locking module.

[0046] In this embodiment, the lock head has a conical structure, and the head surface of the lock head is arc-shaped; the lock groove on the lock base 12 has a conical structure. Designing the head surface of the lock head as arc-shaped, the overall lock head as a conical structure, and the lock groove as a conical structure that matches the lock head allows the lock pin and the lock groove to rotate and lock more smoothly, with a tighter fit, preventing any jerking or jamming.

[0047] In this embodiment, the locking pin assembly includes a locking frame 8, a locking pin 9, a spring 10, and a locking block 11;

[0048] Lock block 11 and lock frame 8 are fixed to the bottom surface of turntable 3;

[0049] The locking pin 9 moves through the two side frames of the lock frame 8 and the lock block 11 in sequence, and the lock head of the locking pin 9 extends to the outside of the lock block 11;

[0050] Spring 10 is located in lock frame 8 and is fitted onto lock pin 9; one end of spring 10 is fixedly connected to lock pin 9, and the other end of spring 10 is fixedly connected to lock frame 8.

[0051] When the locking module performs the locking operation, the locking pin 9 will be inserted into the locking groove of the lock seat 12; the elastic force of the spring 10 will firmly press the locking pin 9 into the locking groove; when the locking module performs the unlocking operation, the external force pulls the locking pin 9 in the opposite direction, and the locking pin 9 can be pulled out from the locking groove of the lock seat 12.

[0052] In this embodiment, a pull rope is fixedly connected to the tail of the locking pin 9; however, the structure of the pull rope is not shown in the accompanying drawings. By fixing the pull rope to the tail of the locking pin 9, operators can easily pull the rope to control the locking pin 9.

[0053] In this embodiment, the buffer block 4 is made of an elastic material; the material of the buffer block 4 is preferably a rubber material with good elasticity; the buffer block 4 absorbs most of the impact force that should have been received by the locking pin and the locking groove, which greatly increases the reliability of the locking pin and extends the service life of the locking pin and the locking groove.

[0054] The present invention provides a business chair base frame with rotation limit, which has the following beneficial effects: The present invention designs a business chair base frame with rotation limit. By adding a locking protection module, during the rotation operation of the business chair body, the locking protection module can effectively absorb most of the impact force that should be received by the lock head and lock groove, reducing the impact directly acting on the lock pin assembly and lock seat, greatly increasing the reliability of the lock pin and extending the service life of the lock pin and lock groove, thus improving the reliability of the lock pin.

[0055] The device embodiments described above are merely illustrative. The components described as separate parts may or may not be physically separate. The components shown as components may or may not be physical components; they may be located in one place or distributed across multiple network components. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] It is understood that those skilled in the art can make equivalent substitutions or modifications based on the technical solution and concept of this utility model, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A business seat bottom frame with rotation limit, characterized in that, include: Fixed bracket, upper support plate, turntable, rotating component, bolt lock module and bolt lock protection module; The business chairs are fixed on the turntable; The upper support plate is fixed to the fixed bracket; the turntable is connected to the top surface of the upper support plate through a rotating component; A locking module is provided on each side of the rotating component at the top of the upper support plate; The mortise lock module includes a locking pin assembly fixed to the bottom surface of the turntable and a locking seat fixed to the top surface of the upper support plate; Each mortise lock module is equipped with an independent mortise lock protection module; the mortise lock protection module includes a limit block, a fixing block, and a buffer block; The limiting block is fixed to the top surface of the upper support plate; the fixing block is fixed to the bottom surface of the turntable; and the buffer block is fixed to one side of the fixing block. After the external force controls the turntable to rotate to the target position, the buffer block on the same side will first adhere to the side wall of the limit block; then the lock head of the locking pin assembly will be inserted into the lock groove of the lock seat.

2. The business class seat base frame with rotational limit according to claim 1, characterized in that, The lock head has a conical structure, with the head surface being arc-shaped; the lock groove on the lock base also has a conical structure.

3. The business class seat base frame with rotational limit according to claim 1, wherein, The locking pin assembly includes a locking frame, a locking pin, a spring, and a locking block; The locking block and locking frame are fixed to the bottom surface of the turntable; The locking pin moves sequentially through the two side frames and the locking block on the lock frame, and the locking head of the locking pin extends to the outside of the locking block; The spring is located in the lock frame and is fitted onto the lock pin; one end of the spring is fixedly connected to the lock pin, and the other end of the spring is fixedly connected to the lock frame.

4. The business class seat base frame with rotational limit according to claim 3, characterized in that, The end of the locking pin is fixedly connected to the pull rope.

5. The business class seat base frame with rotational limit according to claim 1, wherein, The buffer block is made of elastic material.

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