Swing rod assembly and lifting sleeping berth bed

Abstract

The swing rod assembly comprises a swing rod and a support which are rotationally connected, a compression spring and a pull rod used for limiting the telescopic direction of the compression spring are arranged between the swing rod and the support, and when the swing rod rotates to be close to the support, the compression spring is compressed. Through the mechanical mode that the compression spring is matched with the pull rod, the load dead weight of the free end of the swing rod is overcome, operation is labor-saving, cost is lower, and durability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to a foldable support especially relates to a swing rod assembly and further relates to a lifting bunk bed. BACKGROUND

[0002] In rail transit, the bunk cabin is usually layered to facilitate passengers to rest while increasing space utilization. To further improve space utilization, the existing bunk bed adopts a lifting and / or folding mode.

[0003] The bunk bed in the form of folding changes the size of the space, such as the railway passenger car overturning bunk disclosed in the invention patent application No. CN 113928359 A. The commonly used overturning scheme is that the bed frame and the mounting seat are rotationally connected, a rocker is fixedly connected on the rotation shaft of the bed frame, and a gas spring or other electric telescopic mechanism is arranged on the mounting seat as a driving force to drive the bed frame to overturn to be parallel to the wall. The electric driving force can avoid manual driving, but also increases the installation cost. How to reduce the force required for the bunk bed to overturn and reduce the cost is a problem to be solved. SUMMARY

[0004] The utility model aims to provide a swing rod assembly capable of reducing the driving force, and another object of the utility model is to provide a lifting bunk bed.

[0005] Technical scheme: The utility model discloses a swing rod assembly, which comprises a swing rod and a support that are rotationally connected, a compression spring is arranged between the swing rod and the support, a pull rod is arranged for limiting the extension direction of the compression spring, the swing rod is rotationally close to the support, and the compression spring is compressed.

[0006] Preferably, the longitudinal section of the support is U-shaped, the swing rod is located in the support, one side of the swing rod is provided with a swing rod seat, and the swing rod seat and the swing rod are in contact with the left and right side walls of the support respectively.

[0007] Preferably, one end of the pull rod is rotationally connected with the swing rod seat, and the other end is slidingly connected with the support.

[0008] Preferably, the left and right side walls in the middle of the support are rotationally connected with a support seat, a bushing is arranged on the support seat, and the pull rod is slidingly connected with the bushing.

[0009] Preferably, the left and right side walls in the middle of the support are provided with mounting grooves, and the support seat is rotationally connected with the support through the mounting grooves.

[0010] Preferably, a U-shaped groove is arranged on the swing rod seat, one end of the pull rod close to the swing rod seat is provided with a mounting seat, a gasket is arranged at the bottom of the mounting seat, the swing rod is rotationally arranged at a certain angle with the pull rod, and the swing rod seat and the gasket are in abutment.

[0011] Preferably, the pull rod is located inside the compression spring, and the bottom of the pull rod is provided with a nut for limiting the sliding length of the pull rod.

[0012] Preferably, the free end of the swing rod is bent towards the direction away from the bracket, and the bottom of the bracket is provided with a buffer.

[0013] Preferably, a cover is arranged outside the bracket, and a sliding groove for the swing rod to move is arranged on the cover.

[0014] A lifting bunk bed comprises the swing rod assembly of the foregoing part, and a bed frame and a locking member, the bed frame is connected with the swing rod, and the two ends of the bed frame are connected with the locking member after the bed frame is lifted by the swing rod.

[0015] Advantages: compared with the prior art, the utility model has the following advantages: 1, reduce the driving force: through the mechanical mode of compression spring and pull rod cooperation, overcome the swing rod free end dead weight, operation saves the labor; 2, with limiting function: the U-shaped groove of swing rod seat cooperates with the gasket of mounting seat, restricts the rotation angle of swing rod, guarantees that the bed frame is in horizontal state when being retracted upward; 3, small space occupation, when using, extend, when not using, retract; 4, the free end of swing rod is bent, guarantees that there is no gap between the bed frame and wall. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the swing rod assembly of the utility model in folded state;

[0017] Figure 2 It is a front view of the swing rod assembly of the utility model in folded state;

[0018] Figure 3 It is a structure schematic view of the swing rod assembly of the utility model in unfolded state;

[0019] Figure 4 It is Figure 3 It is an enlarged view of the middle part structure;

[0020] Figure 5 It is a structure schematic view of the lifting bunk bed with the swing rod assembly of the utility model. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be further described below in combination with the drawings.

[0022] As Figures 1 to 3 The utility model discloses a swing rod assembly, and the swing rod assembly mainly comprises a swing rod 2 and a bracket 5, a compression spring 7 and a pull rod 8 are arranged between the swing rod 2 and the bracket 5, the swing rod 2 is folded by rotating close to the bracket, the compression spring 7 is compressed, the swing rod 2 is unfolded by moving away from the bracket 5, the compressed compression spring 7 is stretched, the compression spring 7 serves as a booster, and the pull rod 8 is used for limiting the extension direction of the compression spring 7 to avoid the compression spring 7 from being bent sideways when being compressed.

[0023] The root of the swing arm 2 is rotatably connected to the top of the bracket 5 via a pin 4. The top of the swing arm 2, away from the root, is a free end with a connection point. The connection point is connected to the bed frame or cover plate, etc., for support and covering, to drive the bed frame or cover plate to move. The bracket 5 has a U-shaped longitudinal section. There is a swing arm seat 1 on one side of the root of the swing arm 2. The swing arm seat 1 and the swing arm 2 move synchronously. The swing arm seat 1 and the swing arm 2 contact the left and right side walls of the bracket 5, respectively. When the swing arm 2 rotates, the bracket 5 can constrain the two sides of the swing arm to ensure that the swing arm 2 only rotates around the pin 4, eliminating left and right movement. When the swing arm 2 rotates to overlap with the bracket 5, part of the swing arm 2 is located inside the bracket 5, reducing the overall volume.

[0024] Supports 10 are rotatably connected to the left and right side walls of the middle of bracket 5. Bushing 3 is connected to the middle of support 10. One end of pull rod 8 is connected to mounting base 6, and is rotatably connected to rocker arm seat 1 through mounting base 6. The remaining end of pull rod 8 is sleeved in bushing 3. When rocker arm seat 1 rotates with rocker arm 2, it drives pull rod 8 to slide up and down in bushing 3. Figure 4 A U-shaped groove 15 is provided in the middle of the swing arm seat 1 as a socket, and the top of the mounting base 6 serves as a plug, which is inserted into the U-shaped groove 15. The plug and socket are rotatably connected. A gasket 14 is provided at the bottom of the mounting base 6. When the swing arm 2 rotates away from the bracket 5 and the pull rod 8 to form a certain angle, such as Figure 3 The rocker arm seat 1 and the mounting base 6 abut against each other, which can constrain the rotation angle of the rocker arm 2. A nut is provided at the bottom of the pull rod 8 to limit the sliding distance of the pull rod 8. The pull rod 8 is located inside the compression spring.

[0025] The left and right sidewalls of the middle part of the bracket 5 are symmetrically provided with U-shaped mounting grooves (not marked). The two ends of the support 10 are rotatably connected to the bracket 5 through the mounting grooves. The mounting grooves simplify the installation process: when the swing arm 2 drives the bed frame to rotate upward or downward, the support 10 is subjected to pressure and can be stably confined within the mounting groove.

[0026] The top of the swing arm 2 bends away from the support 5, forming an arc-shaped rod. This arc-shaped rod allows the bed frame or cover to be positioned as low and horizontal as possible against the wall when it needs to support the bed frame or cover, minimizing the gap between them. A buffer 9, made of elastic material such as silicone or rubber, is located at the bottom of the support 5. When the swing arm 2 rotates downwards, it first contacts the buffer 9, mitigating the impact.

[0027] The front of the bracket 5 is provided with a cover 12 for protecting the internal parts, and a slide for the swing arm 2 to move is provided on one side of the cover 12.

[0028] like Figure 4As shown, the bed frame 13 is taken as an example, the swing lever assembly further comprises a locking member 11, the swing lever 2 is rotated upward to drive the bed frame to rise, the two ends of the bed frame can be connected with the locking member 11 to keep the stability of the bed frame or the cover plate in the rising state.

[0029] During assembly, according to the length of the bed frame 13, the support 5 is fixed on the wall or the vehicle body at one side of the bed frame 13, the support 10 is installed in the middle installation slot of the support 5, the swing lever 2 is connected with the pull rod 8, then the compression spring 7 is sleeved outside the pull rod 8 and inserted into the bushing 3 of the support 10, finally the swing lever 2 is fixed on the top of the support 5 by using the fastener and the pin shaft 4, the top of the swing lever 2 is connected with the two ends of the bed frame, according to the height of the bed frame rising driven by the swing lever 2 rotating upward, the locking member 11 is installed on the wall or the vehicle body at the two ends of the bed frame, the cover 13 is installed on the front of the support 5, and the assembly is completed. During use, when the swing lever 2 is in the folded state, the bed frame can be rotated around the top of the swing lever 2 to realize the conversion between the horizontal and vertical states of the bed frame, when the swing lever 2 is rotated upward around the pin shaft 4, the energy stored in the compression spring 7 is released, the bed frame is rotated upward with the swing lever 2, the driving force for the bed frame 13 to rise is reduced, when the bed frame is in the high and horizontal position, the swing lever seat 1 body abuts against the gasket of the mounting seat 6, the two ends of the bed frame are connected with the locking member 11 to keep fixed.

Claims

1. A pendulum assembly, characterized in that, It includes a swing arm (2) and a bracket (5) that are rotatably connected. A compression spring (7) and a pull rod (8) for limiting the extension and retraction direction of the compression spring (7) are provided between the swing arm (2) and the bracket (5). When the swing arm (2) rotates closer to the bracket (5), the compression spring (7) is compressed.

2. The pendulum assembly according to claim 1, characterized in that, The longitudinal section of the bracket (5) is U-shaped. The swing rod (2) is located inside the bracket (5). A swing rod seat (1) is provided on one side of the swing rod (2). The swing rod seat (1) and the swing rod (2) are in contact with the left and right side walls of the bracket (5) respectively.

3. The pendulum assembly according to claim 2, characterized in that, One end of the pull rod (8) is rotatably connected to the swing arm seat (1), and the other end is slidably connected to the bracket (5).

4. The pendulum assembly according to claim 3, characterized in that, The left and right side walls of the bracket (5) are rotatably connected to the support (10), and the support (10) is provided with a bushing (3). The pull rod (8) and the bushing (3) are slidably connected.

5. The pendulum assembly according to claim 4, characterized in that, The bracket (5) has mounting grooves on its left and right side walls in the middle, and the support (10) is rotatably connected to the bracket (5) through the mounting grooves.

6. The pendulum assembly according to claim 3, characterized in that, The swing arm seat (1) is provided with a U-shaped groove (15). The end of the pull rod (8) near the swing arm seat (1) is provided with a mounting seat (6). The bottom of the mounting seat (6) is provided with a gasket (14). The swing arm (2) rotates to form a certain angle with the pull rod (8), and the swing arm seat (1) and the gasket (14) abut against each other.

7. The pendulum assembly according to claim 3, characterized in that, The pull rod (8) is located inside the compression spring (7), and a nut is provided at the bottom of the pull rod (8) to limit the sliding length of the pull rod (8).

8. The pendulum assembly according to claim 1, characterized in that, The free end of the swing arm (2) is bent away from the support (5), and the bottom of the support (5) is provided with a buffer (9).

9. The pendulum assembly according to claim 1, characterized in that, The bracket (5) is provided with a cover (12), and the cover (12) is provided with a sliding groove for the swing arm (2) to move.

10. A height-adjustable sleeper bed, characterized in that, Includes the rocker arm assembly as described in claim 1, as well as a bed frame (13) and a locking member (11), wherein the bed frame (13) and the rocker arm (2) are connected, and after the bed frame is raised by the rocker arm, both ends are connected to the locking member.

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