Turnover mechanism of vehicle-mounted bunk bed

Abstract

The utility model discloses a vehicle-mounted bunk bed turnover mechanism which comprises a fixing support assembly, an upper bed assembly, a lower bed assembly and a stand column assembly. The fixing support assembly and the stand column assembly are used for supporting the upper bed assembly and the lower bed assembly. The fixing support assembly comprises two fixing supports, and locking mechanisms are arranged on the fixing supports. The stand column assembly comprises two stand columns, locking supports are arranged on the stand columns, and the axis of the fixing support is parallel to the axis of the stand columns. The fixing support is rotatably connected with the upper bed assembly and the lower bed assembly, the stand columns are also rotatably connected with the upper bed assembly and the lower bed assembly, and the fixing support, the upper bed assembly, the lower bed assembly and the stand columns form a rotatable parallelogram structure. Load is transferred to the bottom plate from the carriage wall plate through the fixing supports and the stand columns, force is not applied to the carriage wall plate, and fatigue deformation of the wall plate caused by long-term repeated stress is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bunk beds, in particular to a vehicle-mounted bunk bed turning mechanism. Background Art

[0002] With the development of society, specialized vehicles have gained widespread use due to their excellent maneuverability, rapid response, suitable onboard equipment, and suitable working environment. Workers often need to be stationed on-site during extended fieldwork. Therefore, many vehicles are equipped with beds within the vehicle compartment for convenient resting. Currently, fixed beds occupy a large amount of space, impacting other workspace. Traditional folding beds are unreliable and require cumbersome procedures for deployment and folding. Conventional wall-mounted folding beds exert forces on the sidewalls both when deployed and when folded. This repeated force on the sidewalls can lead to fatigue deformation, resulting in poor sealing and leaks, or increased internal stress, reducing protective capabilities. Furthermore, because conventional wall-mounted beds require forces on the sidewalls, the connection between the bed and the sidewalls is subject to significant stress, necessitating the addition of pre-cast iron at the corresponding sidewall connection points. This process increases the number of steps, reduces the insulation and overall strength of the vehicle compartment, and increases the weight, hindering mobility and energy conservation. Utility Model Content

[0003] Purpose of the invention: In view of the above shortcomings, the present invention provides a vehicle-mounted bunk bed flipping mechanism, which can not put pressure on the side walls in the vehicle compartment, has few steps for unfolding and retracting, and has a simple structure, and can meet the long-term needs of vehicle-mounted use.

[0004] Technical solution: In order to solve the above problems, the utility model adopts a vehicle-mounted bunk bed flipping mechanism, including a fixed bracket assembly, an upper bunk assembly, a lower bunk assembly, and a column assembly. The fixed bracket assembly and the column assembly are used to support the upper bunk assembly and the lower bunk assembly; the fixed bracket assembly includes two fixed brackets, and the fixed brackets are provided with a locking mechanism; the column assembly includes two columns, and the columns are provided with locking supports, and the axis of the fixed bracket is parallel to the axis of the column; the fixed bracket is rotatably connected to the upper bunk assembly and the lower bunk assembly, and the column is also rotatably connected to the upper bunk assembly and the lower bunk assembly, and the fixed bracket, the upper bunk assembly, the lower bunk assembly, and the column form a rotatable parallelogram structure.

[0005] Furthermore, the fixed bracket is provided with two first rotating shaft seats located on the upper and lower sides respectively, and the column is provided with two second rotating shaft seats located on the upper and lower sides respectively; the upper bed assembly includes an upper bed and four upper bed rotating shaft seats; the lower bed assembly includes a lower bed and four lower bed rotating shaft seats; the upper bed rotating shaft seat and the lower bed rotating shaft seat are both rotatably connected with the first rotating shaft seat and the second rotating shaft seat through a rotating shaft.

[0006] Furthermore, the locking mechanism is rod-shaped, one end of the locking mechanism is rotatably mounted on a fixed bracket, the other end of the locking mechanism is provided with a handle nut, and the locking support is provided with a notch for inserting the locking mechanism; the bed is locked in the folded state by inserting the locking mechanism into the notch and tightening the handle nut.

[0007] Furthermore, a booster spring is provided on the lower side of the fixed bracket, and a spring seat for connecting the booster spring is provided on the lower bunk. When the bunk is unfolded or retracted, the booster spring is in a compressed state.

[0008] Furthermore, a leveling pad is provided at the bottom of the column, and the leveling pad is installed at the bottom of the column through a screw rod, and the height of the column is adjusted by adjusting the screw-in length of the screw rod.

[0009] Furthermore, a folding guardrail is provided on the outer side of the upper bunk.

[0010] Furthermore, at least one column is provided with a folding step.

[0011] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: (1) the load is transferred from the carriage wall panel to the bottom plate by fixing the bracket and the column, and no force is applied to the carriage wall panel, thereby avoiding fatigue deformation of the wall panel caused by long-term repeated stress; (2) at the same time, the carriage reduces the design of buried iron, which can promote the standardization of carriage design, improve design efficiency, reduce the weight of the carriage, and improve the lightweight level of the carriage; (3) the bed can be flipped and folded up and down in a linked manner, and is assisted by a power spring. The bed is easy and labor-saving to operate, and can be quickly unfolded and folded, which can improve the efficiency of vehicle field operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the vehicle-mounted bunk bed flipping mechanism in the unfolded state of the utility model;

[0013] Figure 2 This is a schematic diagram of the overall structure of the vehicle-mounted bunk bed flipping mechanism of the utility model in the folded state;

[0014] Figure 3 This is the three-view drawing of the fixed bracket assembly of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the column assembly of the utility model;

[0016] Figure 5 This is a schematic diagram of the upper bunk assembly structure of the utility model;

[0017] Figure 6 This is a schematic diagram of the lower bunk assembly structure of the utility model;

[0018] Figure 7This is a schematic diagram of the locking mechanism structure of the utility model;

[0019] Figure 8 Schematic diagram of gravity in two states of the utility model. DETAILED DESCRIPTION

[0020] like Figure 1 and Figure 2 As shown, a vehicle-mounted bunk bed flipping mechanism in this embodiment includes a fixed bracket assembly 1, an upper bunk assembly 2, a lower bunk assembly 3, and a column assembly 4. The fixed bracket assembly 1 and the column assembly 4 are used to support the upper bunk assembly 2 and the lower bunk assembly 3. The fixed bracket 101 is installed on the side wall of the vehicle compartment by screws. Figure 3 As shown, the fixed bracket assembly 1 includes two fixed brackets 101 and a crossbar 105 for connecting the two fixed brackets 101. The fixed brackets 101 are provided with a locking mechanism 103, a booster spring 104 and two first rotating shaft seats 102 located on the upper and lower sides respectively. Figure 4 As shown, the column assembly 4 comprises two columns 401, each equipped with a locking support 402, two second pivot seats 403 located on the upper and lower sides, and a leveling pad 404 mounted on the bottom of the column 401. The leveling pad 404 is attached to the bottom of the column 401 via a screw rod, and the height of the column 401 can be adjusted by adjusting the screw rod's screw length. To facilitate climbing to the upper bunk, one of the columns 401 is also equipped with a folding step 5.

[0021] like Figure 5 As shown, the upper bunk assembly 2 includes an upper bunk 201, four upper bunk shaft seats 202, and a folding guardrail 203 is also provided on the outer side of the upper bunk 201. Figure 6 As shown, the lower bunk assembly 3 includes a lower bunk 301, a spring seat 302, and four lower bunk pivot seats 303. The four upper bunk pivot seats 202 and lower bunk pivot seats 303 are located on the bottom surface of the bunk, near the four corners. The upper and lower bunk pivot seats 202 and 303 are also rotatably connected to the first and second pivot seats 102 and 403 via pivots, which are restrained by retaining springs. Inward grooves are formed at the corners of the upper and lower bunks 201 and 301, near the fixed bracket 101, to ensure flexible rotation of the pivoting structure. To smoothly flip the bed, the upper bunk shaft seat 202 is coaxially connected to the two shafts connected to the first shaft seat 102, the lower bunk shaft seat 303 is coaxially connected to the two shafts connected to the first shaft seat 102, the upper bunk shaft seat 202 is coaxially connected to the two shafts connected to the second shaft seat 403, and the lower bunk shaft seat 303 is coaxially connected to the two shafts connected to the second shaft seat 403. This creates a rotatable parallelogram structure composed of the fixed bracket 101, the upper bunk assembly 2, the lower bunk assembly 3, and the uprights 401.

[0022] like Figure 7 As shown, the locking mechanism 103 is rod-shaped, with one end rotatably mounted on the fixed bracket 101. The other end of the locking mechanism 103 is provided with a handle nut. The locking support 402 has a notch for inserting the locking mechanism 103. The bed is locked in the folded state by inserting the locking mechanism 103 into the notch and tightening the handle nut. Conversely, to unfold the bed, the handle nut is loosened and the locking mechanism 103 is removed from the locking support 402. A booster spring 104 is mounted on the fixed bracket 101 at one end and on the spring seat 302 at the other end. When the bed is unfolded or folded, the booster spring 104 is compressed, generating an upward thrust. When the bed is folded, the thrust of the booster spring 104 reduces effort. When the bed is folded, the upward thrust of the booster spring 104 presses the bed against the side wall, helping to lock and secure the bed.

[0023] The specific use process of this utility model is as follows: Figure 8 As shown, when the bed is in the extended position, the fixed brackets 101 and the uprights 401 are both upright on the ground to support the upper bunk assembly 2 and the lower bunk assembly 3. At this point, the center of gravity of the entire mechanism is between the fixed brackets and the uprights (theoretically, on the vertical line of the center of the dimension). Gravity is applied vertically downward, and the fixed brackets and uprights are subjected to vertical downward pressure, without exerting any force on the side walls of the cabin. To retract the bed, the uprights 401 are lifted upward to retract the bed, and the locking mechanism 103 is then tightened to secure it. At this point, the center of gravity of the entire mechanism is above the fixed brackets of the bed. Gravity is applied vertically downward, and the fixed brackets are subjected to vertical downward pressure from the bed, without exerting any force on the side walls of the cabin.

[0024] This utility model transfers the load from the carriage walls to the floor through fixed brackets and columns, eliminating the need for force on the carriage walls, thus preventing fatigue deformation caused by repeated stress. Furthermore, the design reduces the need for buried iron, promoting standardized carriage design and improving design efficiency. It also reduces carriage weight, enhancing the lightweight design. The bunk bed can be flipped and stowed in a coordinated manner, with a spring-assisted mechanism, making operation easy and labor-saving, and quick to deploy and retract, thereby improving the efficiency of field operations.

Claims

1. A vehicle-mounted bunk bed turning mechanism, characterized in that: The invention comprises a fixed support assembly (1), an upper bunk assembly (2), a lower bunk assembly (3), and a column assembly (4), wherein the fixed support assembly (1) and the column assembly (4) are used to support the upper bunk assembly (2) and the lower bunk assembly (3); the fixed support assembly (1) comprises two fixed supports (101), and the fixed supports (101) are provided with a locking mechanism (103); the column assembly (4) comprises two columns (401), and the columns (401) are provided with a locking mechanism (103); A locking support (402) is provided on the upper portion, and the axis of the fixed bracket (101) and the axis of the column (401) are parallel to each other; the fixed bracket (101) is rotatably connected to the upper bunk assembly (2) and the lower bunk assembly (3), and the column (401) is also rotatably connected to the upper bunk assembly (2) and the lower bunk assembly (3); the fixed bracket (101), the upper bunk assembly (2), the lower bunk assembly (3), and the column (401) form a rotatable parallelogram structure.

2. The vehicle-mounted bunk bed turning mechanism according to claim 1, characterized in that: The fixed bracket (101) is provided with two first rotating shaft seats (102) located at the upper and lower sides respectively, and the column (401) is provided with two second rotating shaft seats (403) located at the upper and lower sides respectively; the upper bunk assembly (2) includes an upper bunk (201) and four upper bunk rotating shaft seats (202); the lower bunk assembly (3) includes a lower bunk (301) and four lower bunk rotating shaft seats (303); the upper bunk rotating shaft seat (202) and the lower bunk rotating shaft seat (303) are both rotatably connected to the first rotating shaft seat (102) and the second rotating shaft seat (403) via a rotating shaft.

3. The vehicle-mounted bunk bed turning mechanism according to claim 1, characterized in that: The locking mechanism (103) is in the shape of a rod. One end of the locking mechanism (103) is rotatably mounted on the fixed bracket (101). The other end of the locking mechanism (103) is provided with a handle nut. A notch is provided on the locking support (402) for inserting the locking mechanism (103). The bed is locked in the folded state by inserting the locking mechanism (103) into the notch and tightening the handle nut.

4. The vehicle-mounted bunk bed turning mechanism according to claim 1, wherein: A booster spring (104) is provided on the lower side of the fixed bracket (101), and a spring seat (302) for connecting the booster spring (104) is provided on the lower bunk (301). When the bunk is unfolded or retracted, the booster spring (104) is in a compressed state.

5. The vehicle-mounted bunk bed turning mechanism according to claim 1, characterized in that: A leveling pad (404) is provided at the bottom of the column (401). The leveling pad (404) is installed on the bottom of the column (401) through a screw rod. The height of the column (401) can be adjusted by adjusting the screwing length of the screw rod.

6. The vehicle-mounted bunk bed turning mechanism according to claim 2, wherein: A folding guardrail (203) is also provided on the outer side of the upper bunk (201).

7. The vehicle-mounted bunk bed turning mechanism according to claim 1, characterized in that: At least one upright column (401) is provided with a folding step (5).

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