Hidden trundle

Abstract

The utility model belongs to the technical field of lifting trundles, and particularly relates to a hidden trundle which comprises a bottom frame of a frame structure and four trundle bodies installed at the four corners of the bottom frame in a sliding mode respectively and matched with the bottom frame in a sliding mode in the height direction. The bed frame is installed on the bottom frame in a liftable mode, and the bottom of the bed frame can make contact with the tops of the trundles; when the bed frame descends, the bed frame can drive the trundles to slide downwards relative to the bottom frame, and the bottoms of the trundles can stretch out of the bottom of the bottom frame. When the bed frame ascends, the trundles are separated from the bed frame and can slide upwards into the bottom frame relative to the bottom frame. The utility model has the advantages that the bottoms of the trundles extend out of the chassis to stably support the chassis and be convenient to move when the chassis needs to be carried, and the trundles can be hidden in the chassis when the chassis does not need to be carried, so that the chassis is more stable and the attractiveness is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of lifting caster technology; specifically, this utility model relates to a concealed caster. Background Technology

[0002] When supporting heavy or large objects, existing frames often have casters added to the bottom for easy movement and handling. However, after installing casters, the frame becomes unstable when it is not needed to support heavy objects or handle large items, and it is also not aesthetically pleasing. Utility Model Content

[0003] In view of this, the present invention provides a concealed caster, thereby solving or at least alleviating the above-mentioned problems existing in the prior art.

[0004] To achieve the aforementioned objectives, this utility model provides a concealed caster, comprising:

[0005] The base frame is a frame structure.

[0006] Four casters are slidably installed at the four corners of the base frame, and slide with the base frame in the height direction;

[0007] The bed frame is height-adjustable and mounted on a base frame, with the bottom of the bed frame able to contact the top of the casters;

[0008] When the bed frame is lowered, the bed frame can drive the casters to slide downward relative to the base frame, and the bottom of the casters can extend from the bottom of the base frame; when the bed frame is raised, the casters separate from the bed frame and can slide upward relative to the base frame into the base frame.

[0009] Optionally, the concealed caster described above may also include:

[0010] Two rotating frames are symmetrically distributed and rotatably mounted on the base frame in the left-right direction. The bottom of the rotating frame is rotatably connected to the base frame, and the top of the rotating frame is slidably connected to the bed frame. The rotating frame and the bed frame are in lateral sliding engagement.

[0011] A support frame, the bottom of which is rotatably connected to the center of a rotating frame, and the top of which is rotatably connected to the outside of the bed frame.

[0012] In one type of concealed caster as described above, optionally, the base frame includes:

[0013] A sleeve is fixedly installed at the four corners of the base frame, and the caster is sleeved inside the sleeve. The sleeve and the caster slide in the height direction.

[0014] In one of the concealed casters described above, optionally, a caster rod is fixedly provided on the top of the caster, the caster screw and the sleeve are slidably engaged in the height direction, and a spring is provided between the caster rod and the sleeve.

[0015] In one of the concealed casters described above, optionally, a washer that can be supported by a sleeve is fitted at the top of the caster rod, and a nut that is threaded to the top of the caster rod is provided at the top of the washer.

[0016] In one of the concealed casters described above, optionally, the sleeve is provided with a baffle with a cross-section that results in a "T" shape, the caster rod passes through the center of the baffle, and the top of the middle part of the baffle can be supported on a pad.

[0017] In one of the concealed casters described above, optionally, a washer is fitted at the bottom end of the sleeve.

[0018] This utility model discloses a hidden caster, which uses a bed frame pressing caster so that the bottom of the caster extends out from the base frame, making it easy to move the base frame. The bed frame and the caster are separated, and the caster is hidden in the base frame, making the base frame more stable without affecting the aesthetic effect. Attached Figure Description

[0019] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the caster of this utility model when it is extended.

[0021] Figure 2 This is a side view of the overall structure of the caster of this utility model when it is extended.

[0022] Figure 3 This is a slanted bottom view of the caster of this utility model when it is extended.

[0023] Figure 4 This is a top view of the overall structure of the caster of this utility model when it is extended.

[0024] Figure 5 This is a schematic diagram showing the sleeve of the caster of this utility model after being cut open when the caster is extended.

[0025] Figure 6 This utility model Figure 5 A breakdown diagram.

[0026] Attached reference numerals: 1. Base frame; 2. Caster; 2-1. Caster rod; 2-2. Nut; 2-3. Washer; 3. Bed frame; 4. Rotating frame; 5. Support frame; 6. Sleeve; 6-1. Baffle; 6-2. Washer; 7. Spring. Detailed Implementation

[0027] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] like Figures 1 to 6 As shown, this embodiment provides a hidden caster, including a base frame 1, casters 2 and a bed frame 3. The base frame 1 is a frame structure, and a caster 2 is installed at each of the four corners of the base frame 1. The casters 2 slide with the base frame 1 in the height direction.

[0029] Bed frame 3 is mounted on base frame 1 in a height adjustable manner.

[0030] When the bed frame 3 is lowered, the bottom of the bed frame 3 can contact the top of the caster 2, and the bed frame 3 can drive the caster 2 to slide downward relative to the base frame 1. The bottom of the caster 2 extends from the bottom of the base frame 1, which facilitates the movement of the base frame 1.

[0031] When the bed frame 3 rises, the casters 2 separate from the bed frame 3. The casters 2 can slide upward relative to the base frame 1 into the interior of the base frame 1. The base frame 1 moves downward and contacts the ground. At this time, the base frame 1 is immovable. Meanwhile, the casters 2 are hidden by the base frame 1, which does not affect the aesthetics.

[0032] In a relatively specific embodiment, it also includes two rotating frames 4 and a support frame 5.

[0033] Two rotating frames 4 are symmetrically distributed and rotated on the base frame 1 in the left and right directions. The bottom of the rotating frame 4 is rotatably connected to the base frame 1, and the top of the rotating frame 4 is slidably connected to the bed frame 3. The rotating frame 4 and the bed frame 3 are in lateral sliding cooperation. When the two rotating frames 4 rotate upward at the same time, they drive the bed frame 3 to move upward. When the two rotating frames 4 rotate downward at the same time, they drive the bed frame 3 to move downward, thus realizing the lifting and lowering of the bed frame 3.

[0034] The bottom of the support frame 5 is rotatably connected to the center of the rotating frame 4, and the top of the support frame 5 is rotatably connected to the outside of the bed frame 3. The rotating frame 4 and the support frame 5 stably support the bed frame 3 above the base frame 1.

[0035] In a relatively specific embodiment, the base frame 1 includes a sleeve 6, which is fixedly installed at the four corners of the base frame 1. The caster 2 is sleeved in the sleeve 6, and the sleeve 6 and the caster rod 2-1 slide in the height direction.

[0036] When the two rotating frames 4 rotate downwards at the same time, the bed frame 3 descends, the bottom surface of the bed frame 3 contacts the top of the caster 2, the caster 2 slides downwards relative to the base frame 1, and the bottom of the caster 2 extends out from the sleeve 6.

[0037] When both rotating frames 4 rotate upwards simultaneously, the bed frame 3 rises and separates from the casters 2. The casters 2 slide upwards inside the sleeve 6, and the bottom surface of the sleeve 6 contacts the ground. The base frame 1 does not directly contact the ground, thus avoiding friction between the base frame 1 and the ground. At the same time, the casters 2 can be better hidden by the sleeve 6.

[0038] In a relatively specific embodiment, a caster rod 2-1 is fixedly provided on the top of the caster 2. The caster 2 is slidably engaged with the sleeve 6 in the height direction. A spring 7 is provided between the caster rod 2-1 and the sleeve 6. When the bed frame 3 descends, the bottom surface of the bed frame 3 contacts the top surface of the caster rod 2-1, the caster rod 2-1 moves downward, the spring 7 is compressed, the bottom of the caster 2 extends out from the bottom of the sleeve, the base frame 1 moves upward relative to the caster 2, and the bottom surface of the bed frame 3 contacts the bed frame 3.

[0039] When the bed frame 3 rises, the bed frame 3 separates from the caster rod 2-1, and the spring 7 rebounds, making it easier for the caster 2 to move upward into the sleeve 6 and be hidden by the sleeve 6.

[0040] The top of the caster rod 2-1 is fitted with a washer 2-3 that can be supported by the sleeve 6. The top of the washer 2-3 is provided with a nut 2-2 that is threaded to the top of the caster rod 2-1. By rotating the nut 2-2, the distance between the nut 2-2 and the caster 2 can be adjusted, so that the length of the caster 2 can be adjusted longitudinally. This allows the caster 2 to be adjusted to a suitable length, so as to better achieve the switching between the extended and retracted states of the caster 2.

[0041] The sleeve 6 has a baffle 6-1 with a cross-section that results in a "T" shape. The caster rod 2-1 passes through the center of the baffle 6-1, and the top of the middle part of the baffle 6-1 can be supported on the pad 2-3. In this embodiment, the middle part of the baffle 6-1 is fitted into the spring 7 from bottom to top, and the middle part of the baffle directly slides with the caster rod 2-1 to maintain the stability of the caster rod 2-1.

[0042] A washer 6-2 is fitted onto the bottom end of the sleeve 6. Specifically, the washer 6-2 can be a rubber ring or other ring structure with a cushioning effect, which can support the overall base frame 1 when the caster 2 is hidden, reduce the impact between the sleeve 6 and the ground, and provide a cushioning effect.

[0043] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A concealed caster, characterized in that, include: The base frame (1) is a frame structure; Four casters (2) are slidably installed at the four corners of the base frame (1) and slide with the base frame (1) in the height direction; The bed frame (3) is mounted on the base frame (1) in a height-adjustable manner, and the bottom of the bed frame (3) can contact the top of the casters (2); When the bed frame (3) is lowered, the bed frame (3) can drive the casters (2) to slide downward relative to the base frame (1), and the bottom of the casters (2) can extend out from the bottom of the base frame (1); when the bed frame (3) is raised, the casters (2) separate from the bed frame (3) and can slide upward relative to the base frame (1) into the base frame (1).

2. A concealed caster as described in claim 1, characterized in that, Also includes: Two rotating frames (4) are symmetrically distributed in the left and right directions and are rotatably mounted on the base frame (1). The bottom of the rotating frame (4) is rotatably connected to the base frame (1), and the top of the rotating frame (4) is slidably connected to the bed frame (3). The rotating frame (4) and the bed frame (3) are in lateral sliding cooperation. The support frame (5) is rotatably connected at the bottom of the rotating frame (4) and rotatably connected at the top of the support frame (5) to the outside of the bed frame (3).

3. A concealed caster as described in claim 1, characterized in that, The base frame (1) includes: Sleeve (6) is fixedly installed at the four corners of the base frame (1). The caster (2) is sleeved inside the sleeve (6). The sleeve (6) and the caster (2) slide in the height direction.

4. A concealed caster as described in claim 3, characterized in that, The top of the caster (2) is fixedly provided with a caster rod (2-1), the caster (2) is slidably engaged with the sleeve (6) in the height direction, and a spring (7) is provided between the caster rod (2-1) and the sleeve (6).

5. A concealed caster as described in claim 4, characterized in that, The top of the caster rod (2-1) is fitted with a washer (2-3) that can be supported by a sleeve (6), and the top of the washer (2-3) is provided with a nut (2-2) that is threaded to the top of the caster rod (2-1).

6. A concealed caster as described in claim 5, characterized in that, The sleeve (6) is provided with a baffle (6-1) with a cross section that results in a "T" shape. The caster rod (2-1) passes through the center of the baffle (6-1), and the top of the middle part of the baffle (6-1) can be supported on the pad (2-3).

7. A concealed caster as described in claim 3, characterized in that, A washer (6-2) is fitted at the bottom end of the sleeve (6).

Images