Hidden parallel brace structure in lifting mechanism

Abstract

The utility model relates to the technical field of nursing beds, in particular to a hidden parallel brace structure in a lifting mechanism, which comprises a bed frame, a bottom frame, a single-arm suite I and a single-arm suite II, and is characterized in that the bed frame is movably connected with an electric push rod for applying thrust to the single-arm suite I; the bottom end of the first single-arm sleeve piece and the bottom end of the second single-arm sleeve piece are movably connected with pulling strips, and the first single-arm sleeve piece applies pulling force to the bottom end of the second single-arm sleeve piece through the pulling strips. The brace is of a flat structure and is embedded into the inner side of the horizontal square tube of the bottom frame in a sliding mode. The part between the first single-arm sleeve and the second single-arm sleeve is converted into tensile force, so that the structure of the brace is changed, the brace is changed into a strip-shaped part from a tubular part, and the cost is reduced to a certain extent; meanwhile, the strip-shaped pull strip can be embedded in the inner side of the bottom frame in a sliding mode, hiding is achieved, the pull strip is prevented from being exposed to the bottom of the bed, the conciseness of the bed body is effectively improved, the possibility that sundries are clamped into a transmission system is reduced, and the use safety of the bed body is improved.

Description

Technical Field

[0001] The present application relates to the technical field of nursing beds, and in particular to a hidden parallel pull bar structure in a lifting mechanism. Background Art

[0002] In modern society, electric lift beds are widely used in the medical and health care fields. These beds generally use parallelogram-shaped load-bearing rods. In current technology, the electric push rod is usually located on one side of the bed, applying thrust to the single-arm kit under the bed. Square or round steel pipes are used as load-bearing rods between the parallel single-arm kits for linkage movement. These load-bearing rods are exposed under the bed, which not only takes up space under the bed but also poses certain safety issues. Therefore, to address the above issues, this application provides a hidden parallel brace structure in the lifting mechanism. Utility Model Content

[0003] In order to solve the problem that the exposed stress rods of existing nursing beds occupy space and pose a safety hazard, the present application provides a hidden parallel pull rod structure in a lifting mechanism.

[0004] The present application provides a hidden parallel pull-bar structure in a lifting mechanism, comprising a bed frame and a bottom frame, wherein a single-arm kit 1 and a single-arm kit 2 are arranged in parallel between the bed frame and the bottom frame, an electric push rod for driving the position of the single-arm kit 1 being movably connected to the bed frame, the electric push rod applying a thrust to the bottom end of the single-arm kit 1, and pull bars being movably connected to the bottom ends of the single-arm kit 1 and the single-arm kit 2, and the single-arm kit 1 applying a pulling force to the bottom end of the single-arm kit 2 via the pull bars;

[0005] The pull rod is a flat structure and is slidably embedded in the inner side of the horizontal square tube of the bottom frame.

[0006] By converting the thrust between the single-arm kit 1 and the single-arm kit 2 into a pulling force, the structure of the force-bearing rod is changed into a flat pull strip, so that it can be installed in a hidden sliding manner, thereby improving the safety of the bed when in use.

[0007] Preferably, movable grooves are provided on the opposite inner sides of both ends of the horizontal section of the bottom frame.

[0008] Preferably, both sides of the single-arm kit 1 and the single-arm kit 2 are rotatably connected with rollers, the roller shafts are slidably embedded in the inner side of the movable groove, and the rollers are slidably embedded in the inner side of the horizontal square tube of the bottom frame.

[0009] Preferably, a pad is fixedly connected to the inner side of the bottom frame, and the pad is attached to the bottom of the roller.

[0010] Preferably, the pull rod is rotatably connected to two roller shafts in the same horizontal square tube of the bottom frame.

[0011] Preferably, the pull rod is a steel bar.

[0012] In summary, this application has the following beneficial technical effects:

[0013] By changing the positional relationship between the electric push rod and the single-arm kit 2, it is converted from the existing thrust state to a tension state, thereby changing the structure of the pull strip from a tubular part to a strip part, reducing costs to a certain extent; at the same time, the strip-shaped pull strip can be slid and embedded on the inner side of the bottom frame to be hidden and avoid being exposed under the bed, effectively improving the simplicity of the bed, reducing the possibility of debris getting stuck in the transmission system, and improving the safety of the bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an isometric drawing in Example 1 of the present application;

[0015] Figure 2 This is an exploded view of Example 1 of the present application;

[0016] Figure 3 It is a partial cross-sectional view of Example 1 of the present application.

[0017] Explanation of the accompanying reference numerals: 1. Bed frame; 11. Frame plate; 12. Connecting bracket; 2. Bottom frame; 21. Movable slot; 3. Single-arm kit 1; 4. Single-arm kit 2; 5. Electric push rod; 6. Positioning support rod; 7. Roller; 8. Pull rod; 9. Pad. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1 - Figure 3 This application is described in further detail.

[0019] Example 1:

[0020] Reference Figure 1 - Figure 3, a hidden parallel pull bar 8 structure in a lifting mechanism, comprising a bed frame 1 and a bottom frame 2, a single-arm kit 1 3 and a single-arm kit 2 4 arranged in parallel are arranged between the bed frame 1 and the bottom frame 2, an electric push rod 5 for driving the position of the single-arm kit 1 3 is movably connected to the bed frame 1, the end of the electric push rod 5 is rotatably connected to the connecting bracket 12 under the bed frame 1 frame plate 11, and the output end is rotatably connected to the bottom end of the single-arm kit 2 4, the electric push rod 5 applies a thrust to the bottom end of the single-arm kit 1 3, the bottom ends of the single-arm kit 1 3 and the single-arm kit 2 4 are movably connected with a pull bar 8, the single-arm kit 1 3 applies a pulling force to the bottom end of the single-arm kit 2 4 through the pull bar 8, and when the electric push rod 5 is extended, it pushes the single-arm kit 1 The bottom end of the arm kit 2 4 moves forward, applying a thrust to the bottom end of the single arm kit 1 3. At this time, the bottom end of the single arm kit 1 3 moves forward. Since the single arm kit 1 3 and the single arm kit 2 4 need to remain parallel, the single arm kit 1 3 needs to move forward accordingly. At this time, the force between the two is transmitted by the tie rod 8, and the tie rod 8 bears the tension between the single arm kit 2 4 and the single arm kit 1 3. Since the tension does not generate a bias force in a non-tension direction, the structure of the tie rod 8 does not need to consider deformation in the non-tension direction. At this time, the tie rod 8 can be a flat steel bar. Compared with the tubular structure adopted when the thrust is adopted, which needs to consider deformation in the non-thrust direction, it has a smaller volume and lower cost.

[0021] The brace 8 is a flat structure and is a steel bar. The brace 8 is slidably embedded in the inner side of the horizontal square tube of the bottom frame 2. The brace 8 is rotatably connected to the two rollers 7 in the same horizontal square tube of the bottom frame 2.

[0022] Movable slots 21 are defined on the opposing inner sides of both ends of the horizontal section of the bottom frame 2. Rollers 7 are rotatably connected to both sides of the single-arm assembly 1 3 and the single-arm assembly 2 4. The rollers 7 are slidably embedded within the movable slots 21, and the rollers 7 are slidably embedded within the horizontal square tube of the bottom frame 2. A pad 9 is fixedly attached to the inside of the bottom frame 2, fitting against the bottom of the rollers 7. The pad 9 supports the rollers 7, ensuring their stable sliding movement within the bottom frame 2. The movable slots 21 restrict the movement of the rollers 7 on both sides of the single-arm assembly 1 3 and the single-arm assembly 2 4, ensuring their horizontal movement.

[0023] A positioning support rod 6 is provided on one side of the single-arm kit 2 4 , and the positioning support rod 6 is movably connected between the single-arm kit 2 4 and the bottom frame 2 .

[0024] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hidden parallel pull rod structure in a lifting mechanism, comprising a bed frame (1) and a bottom frame (2), wherein a single-arm kit 1 (3) and a single-arm kit 2 (4) arranged in parallel are provided between the bed frame (1) and the bottom frame (2), and an electric push rod (5) for driving the position of the single-arm kit 1 (3) is movably connected to the bed frame (1), characterized in that: The electric push rod (5) applies a thrust to the bottom end of the single-arm kit one (3); the bottom ends of the single-arm kit one (3) and the single-arm kit two (4) are movably connected with a pull rod (8); the single-arm kit one (3) applies a pulling force to the bottom end of the single-arm kit two (4) through the pull rod (8); The pull strip (8) is a flat structure, and is slidably embedded in the inner side of the horizontal square tube of the bottom frame (2).

2. The hidden parallel brace structure according to claim 1, characterized in that: Movable grooves (21) are provided on the opposite inner sides of both ends of the horizontal section of the bottom frame (2).

3. The hidden parallel brace structure according to claim 2, characterized in that: Both sides of the single-arm kit 1 (3) and the single-arm kit 2 (4) are rotatably connected with rollers (7), the shafts of the rollers (7) are slidably embedded in the inner side of the movable groove (21), and the rollers (7) are slidably embedded in the inner side of the horizontal square tube of the bottom frame (2).

4. The hidden parallel brace structure according to claim 3, characterized in that: A pad (9) is fixedly connected to the inner side of the bottom frame (2), and the pad (9) is attached to the bottom of the roller (7).

5. The hidden parallel brace structure according to claim 1, characterized in that: The pull rod (8) is rotatably connected to the shafts of two rollers (7) in the horizontal square tube of the same bottom frame (2).

6. The hidden parallel brace structure according to claim 5, characterized in that: The pull rod (8) is a steel bar.

Images