Rotation restraining assembly and lifting sleeping berth bed

Abstract

The rotation restraining assembly comprises a pin shaft synchronizing rod used for connecting and supporting a rotating piece to rotate and a collision block used for connecting the rotating piece, the collision block is rotationally connected with the rotating piece through a support, and the front end of the collision block abuts against or is connected with the synchronizing rod in an inserted mode. And the rotational degree of freedom of the rotating piece relative to the pin shaft is limited. When the lifting sleeping berth bed is in a sleeping state, the lifting sleeping berth bed plays a role in safety, prevents the conditions of mistaken rotation, turnover of the bed body and falling of a user, and ensures safety.

Description

Technical Field

[0001] This utility model relates to a limiting structure, particularly to a rotation constraint component, and also to a lifting sleeper bed. Background Technology

[0002] In rail transit, sleeper compartments are typically tiered, facilitating passenger rest while maximizing space utilization. To further enhance space utilization, existing sleeper beds employ lifting and / or folding mechanisms.

[0003] The connection between the sleeper bed and the vehicle body, and the height adjustment, usually require the addition of a rotating mechanism. For example, the invention patent application with publication number CN109228990A discloses a sleeper bed using a lifting headrest. The two ends of the bed frame are connected by a mounting bracket, which is connected to the vehicle body. There is a gas spring between the mounting bracket and the bed frame. The gas spring extends and pushes the bed frame to rotate downwards, parallel to the wall. The gas spring retracts and pulls the bed frame back to the horizontal position.

[0004] When using a bed frame, it is essential to ensure that the bed frame is level to guarantee safety. How to prevent the bed frame from rotating due to misoperation is a problem that needs to be solved. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to provide a rotation constraint component that helps prevent accidental rotation; another purpose of this utility model is to provide a lifting sleeper bed.

[0006] Technical solution: The present invention provides a rotation constraint assembly, comprising a pin and a synchronizing rod for connecting and supporting the rotation of a rotating component, and a stop block for connecting the rotating component. The stop block is rotatably connected to the rotating component via a support, and the front end of the stop block abuts or inserts into the synchronizing rod, thereby restricting the rotational freedom of the rotating component relative to the pin.

[0007] Preferably, the synchronizing rod is a polygonal rod.

[0008] Preferably, the synchronizing rod body is provided with a limiting structure, which is a protrusion or a groove.

[0009] Preferably, a torsion spring is provided between the impact block and the support.

[0010] Preferably, the rotation constraint assembly includes a button, which is fitted with a mounting base for connecting the rotating component. Pressing the button pushes the impact block away from the synchronizing rod.

[0011] Preferably, a pull rod is provided between the button and the stop block. When the button is pressed, the pull rod pushes the stop block to rotate away from the synchronizing rod.

[0012] Preferably, the pull rod is provided with a bushing that supports the movement of the pull rod, and a mounting plate for connecting rotating parts is provided outside the bushing.

[0013] Preferably, a spring is fitted onto the pull rod, and when the spring relaxes, it pushes the pull rod away from the impact block.

[0014] Preferably, the mounting base has a rotatably connected lever plate on the side near the pull rod. The lever plate is connected to the pull rod, and pressing the button moves the pull rod via the lever plate.

[0015] Preferably, the button has a trigger shaft at the end near the dial.

[0016] A height-adjustable sleeper bed includes the aforementioned rotation constraint assembly, wherein the rotating component is the bed frame.

[0017] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. Prevents accidental rotation: In the sleeping state of the lifting sleeper bed, it plays a safety role to prevent the bed from being overturned and the user from falling, thus ensuring safety; 2. Simple operation, just press a button; 3. Fine and compact structure, small space occupation, the safety function can be achieved through a purely mechanical structure, and the processing cost of parts is low. Attached Figure Description

[0018] Figure 1 This is a top view of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of the front half of the structure;

[0021] Figure 4 This is a side view of the structure of this utility model;

[0022] Figure 5 for Figure 2 Enlarged view of the middle and rear half of the structure. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0024] The rotating mechanism includes a rotating component 1 and a pin (not shown). The pin supports the rotation of the rotating component 1 at opposite ends or sides, meaning that the rotating component 1 has rotational freedom relative to the pin. Figure 1As shown, the rotation constraint assembly includes a synchronizing rod 15 and a stop block 11. The synchronizing rod 15 is installed inside the rotating member 1, and its two ends are respectively connected to oppositely arranged pins. When the rotating member 1 rotates relative to the pins, it also rotates relative to the synchronizing rod 15. The synchronizing rod 15 is provided with a limiting structure 14. The limiting structure 14 can be a protrusion, a groove, or the synchronizing rod 15 can be converted into other shapes, such as a polygon. A protrusion is preferred for the limiting structure 14. Figures 2 to 3 The impact block 11 and the rotating component 1 are rotatably connected, the impact block 11 and the support 13 are rotatably connected, and the support 13 and the rotating component 1 are fixedly connected. The impact block 11 and the synchronizing rod 15 are at a certain angle or relatively perpendicular, with perpendicularity being preferred. Figure 2 With the view from the upper right as the front, when the front end of the impact block 11 contacts or inserts into the limiting structure 14, the degree of freedom of the rotating part 1 relative to the synchronizing rod 15 and the pin is restricted, preventing it from rotating around the pin, thus achieving a safety feature. A torsion spring 12 is provided between the impact block 11 and the support 13. The torsion spring 12 is used for the reset of the impact block 11. After the external force drives the impact block 11 away from the limiting structure 14, the impact block 11 can automatically reset to its initial state. The torsion spring 12 can also act as a constraint, improving the blocking ability of the impact block 11 against the limiting structure.

[0025] like Figures 4 to 5 The rotation constraint assembly has a drive assembly, which is a button 5. The button 5 is connected to the rotating part through the mounting base 9. The mounting base 9 passes through the outer shell of the rotating part 1. The button can move back and forth along the mounting base 9. Pressing the button 5 can drive the impact block 11 to rotate, so that the impact block 11 leaves the synchronizing rod 15 and leaves the limiting structure 14.

[0026] like Figures 2 to 3 A lever 3 is located between button 5 and stop block 11. Lever 3 is used for remote unlocking. Pressing button 5 will push stop block 11 to rotate away from synchronizer rod 15 via lever 3. A bushing 10 is fitted on lever 3. Bushing 10 is fixed to mounting plate 2. Mounting plate 2 is connected to rotating component 1. Mounting plate 2 and bushing 10 support the movement of lever 3. Thus, lever 3 can slide along bushing 10 and can be pushed by button 5 to contact stop block 11, pushing stop block 11 to rotate away from limit structure 14, allowing rotating component 1 to regain rotational freedom. A spring 4 is fitted on lever 3. Spring 4 is in contact with bushing 10. When spring 4 is in the relaxed state, it pushes lever 5 away from stop block 11. In the dormant state, lever 5 can automatically move away from stop block 11.

[0027] The mounting base 9 has a rotating dial plate 6 on its inner side. The button 5 has a trigger shaft 7 at one end near the dial plate 6. The dial plate 6 and the pull rod 3 are hinged. When the button 5 is pressed, the button 5 pushes the dial plate 6 to rotate. The dial plate 6 drives the pull rod 3 to slide, pushing the impact block 11 to slide along the bushing 10.

[0028] During assembly, the two ends of the synchronizing rod 15 are fixed to the pin shaft, the support 13 is fixed to the rotating part 1, and the end of the impact block 11 is in contact with the limiting structure 14. At the same time, when the impact block 11 compresses the torsion spring 12, it can move away from the limiting mechanism. The mounting plate 2 is fixed to the rotating part 1, and the mounting base 9 is fixed to the housing of the rotating part 1. One end of the pull rod 11 is sleeved with the spring 4, passes through the bushing 10 on the mounting plate 2, and approaches the impact block 11. When the spring 4 is released, the pull rod 11 and the impact block 11 are in contact but there is no force between them or they are a small distance apart. The other end of the pull rod 11 is hinged to the lever plate 6 on the mounting base 9.

[0029] In use, pressing button 5 pushes trigger shaft 7, causing trigger shaft 7 to extend and push dial plate 6 to rotate. Dial plate 6 drives pull rod 3 to move, and pull rod 3 extends, pushing impact block 11. Impact block 11 rotates away from limiting structure 14, releasing the constraint of synchronization rod 15. At this time, rotating component 1 can rotate relative to synchronization rod 15, and rotating component 1 can be flipped. In this utility model, rotating component 1 can be a seat back, a rotating and folding sleeper bed frame, or other components with rotational features. Taking a sleeper bed as an example, rotating component 1 is the bed frame.

Claims

1. A rotation constraint assembly, characterized in that, It includes a pin-shaft synchronizing rod (15) for connecting and supporting the rotation of the rotating component, and a striking block (11) for connecting the rotating component. The striking block (11) is rotatably connected to the rotating component through a support (13). The front end of the striking block (11) abuts or inserts into the synchronizing rod (15), and the rotational freedom of the rotating component relative to the pin-shaft is restricted.

2. The rotation constraint assembly according to claim 1, characterized in that, The synchronizing rod (15) is a polygonal rod.

3. The rotation constraint assembly according to claim 1, characterized in that, The synchronizing rod (15) has a limiting structure (14) on its body, which is a protrusion or a groove.

4. The rotation constraint assembly according to claim 1, characterized in that, A torsion spring (12) is provided between the impact block (11) and the support (13).

5. The rotation constraint assembly according to claim 1 or 4, characterized in that, The rotation constraint assembly includes a button (5), which is fitted with a mounting base (9) for connecting the rotating component. Pressing the button (5) pushes the impact block (11) away from the synchronizing rod (15).

6. The rotation constraint assembly according to claim 5, characterized in that, A lever (3) is provided between the button (5) and the impact block (11). When the button (5) is pressed, the impact block (11) is pushed to rotate away from the synchronizing rod (15) by the lever (3).

7. The rotation constraint assembly according to claim 6, characterized in that, The pull rod (3) is provided with a bushing (10) to support the movement of the pull rod (3), and a mounting plate (2) for connecting rotating parts is provided outside the bushing (10).

8. The rotation constraint assembly according to claim 7, characterized in that, A spring (4) is fitted on the pull rod (3). When the spring (4) is relaxed, it pushes the pull rod (3) away from the impact block (11).

9. The rotation constraint assembly according to claim 6, characterized in that, The mounting base (9) has a rotating connecting dial plate (6) on the side near the pull rod. The dial plate (6) is connected to the pull rod (3). Pressing the button (5) will cause the pull rod (3) to move through the dial plate (6). The button (5) has a trigger shaft (7) on the end near the dial plate (6).

10. A height-adjustable sleeper bed, characterized in that, Includes the rotation constraint assembly as described in claim 1, wherein the rotating component is a bed frame.

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