Rocking bar structure of medical nursing bed

Abstract

The utility model belongs to the technical field of medical nursing beds, and particularly discloses a rocker structure of a medical nursing bed, which comprises a rocking handle and a connecting rod, the connecting rod is connected with the rocking handle through a sleeve, the section of the sleeve is in an elliptical ring shape, the sleeve is vertically arranged on the rocking handle, and one end of the connecting rod is connected with the sleeve in a rotary limiting manner. The other end of the connecting rod extends out of the sleeve in the axial direction of the sleeve, at least one limiting protrusion is arranged on the outer wall of the connecting rod, the limiting protrusions are located in the sleeve, and the inner wall of the sleeve rotationally abuts against the limiting protrusions. According to the rocker structure of the medical nursing bed, due to the fact that the connecting rod is arranged on the sleeve, the stability of the structure is improved, the durability of the rocker is improved, the section of the sleeve is in the shape of the oval ring, the sleeve can be better restrained when rotating, the possibility of shaking and loosening is reduced, and meanwhile the rocker structure is convenient to use. The connecting rod and the sleeve are connected in a rotary limiting mode, the inner wall of the sleeve is matched with the inner wall of the sleeve to rotationally abut against the limiting protrusion, the rotation freedom degree of the sleeve is limited, the structural strength of the connecting position is improved, and therefore the risk of breakage is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical nursing beds, and in particular relates to a rocker structure of a medical nursing bed. Background Art

[0002] Medical care beds are indispensable and important equipment in medical institutions. They bear the life safety and comfort of patients. In the design of medical care beds, the rocker structure plays a vital role. It is the main control component for bed lifting, adjustment and other operations. Therefore, the stability, durability and ease of operation of the rocker structure directly affect the use effect of the bed and the patient's experience.

[0003] In the existing design of medical nursing beds, the rocker is usually directly connected to the screw on the nursing bed through a sleeve with a circular cross-section. By directly shaking the rocker, the screw can be controlled to rotate, and then the lifting and lowering of the bed head can be controlled. Although this connection method has advantages in simplicity, there are also some problems that cannot be ignored. On the one hand, since the cross-section of the sleeve is circular, when excessive force is applied or used for a long time, stress concentration is prone to occur at the connection between the sleeve and the screw, resulting in an increased risk of fracture. On the other hand, the circular sleeve has a large degree of rotational freedom, which may cause the rocker to shake or loosen during use, affecting the stability of the operation.

[0004] Therefore, the inventor is committed to designing a rocker structure of a medical care bed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a rocker structure of a medical nursing bed, which is not only stable and durable, but also reduces the risk of fracture at the connection and reduces the possibility of shaking and loosening.

[0006] In order to achieve the above object, a technical solution adopted by the utility model is:

[0007] A rocker structure of a medical care bed comprises a rocker handle and a connecting rod, wherein the connecting rod is connected to the rocker handle via a sleeve, the sleeve has an elliptical ring-shaped cross section and is vertically arranged on the rocker handle, one end of the connecting rod is rotationally limitedly connected to the sleeve, and the other end of the connecting rod extends to the outside of the sleeve along the axial direction of the sleeve, at least one limiting protrusion is provided on the outer wall of the connecting rod, the limiting protrusion is located in the sleeve, and the inner wall of the sleeve rotates to press against the limiting protrusion.

[0008] As an improvement to the rocker structure of the medical nursing bed of the utility model, a limiting tube is extended outwardly along the axial direction of the end surface of the sleeve, and the sleeve is connected to the connecting rod for rotation and limiting through the limiting tube.

[0009] As an improvement to the rocker structure of the medical nursing bed of the utility model, the cross-section of the limiting tube is a polygonal ring, the cross-section of the connecting rod is a polygonal shape, the outer diameter of the limiting tube is smaller than the maximum inner diameter of the sleeve, and the limiting tube is sleeved outside the connecting rod and matches the connecting rod.

[0010] As an improvement of the rocker structure of the medical nursing bed of the utility model, the limiting tube and the sleeve are integrally formed.

[0011] As an improvement to the rocker structure of the medical nursing bed of the utility model, at least one pair of notches is provided on the outer wall of the connecting rod, and the limiting protrusion is located between the same pair of notches.

[0012] As an improvement of the rocker structure of the medical nursing bed of the utility model, the rocker comprises a rod body, a rotating seat and a handle, the handle is hinged to the lower end of the rod body through the rotating seat, and the sleeve is vertically arranged at the upper end of the rod body.

[0013] As an improvement to the rocker structure of the medical nursing bed of the utility model, a through groove is provided at the bottom of the rod body, a fixed shaft is fixed in the through groove, the rotating seat is T-shaped, the upper end of the rotating seat is inserted into the through groove and rotatably sleeved on the fixed shaft.

[0014] As an improvement to the rocker structure of the medical nursing bed of the utility model, a boss is provided on the inner wall of the through groove, a limiting groove is provided on the top of the rotating seat, the boss cooperates with the limiting groove, and a rounded corner is provided at the corner of the rotating seat away from the connecting rod.

[0015] As an improvement of the rocker structure of the medical nursing bed of the utility model, the handle is vertically and rotatably arranged on the side of the rotating seat, and the cross section of the handle is elliptical.

[0016] As an improvement of the rocker structure of the medical nursing bed of the utility model, the connecting rod, the sleeve and the rocker handle together form a Z shape.

[0017] Compared with the prior art, the rocker structure of the medical care bed of the utility model not only increases the stability of the structure, but also improves the durability of the rocker by arranging a connecting rod on the sleeve, and the cross-section of the sleeve is an elliptical ring, so that the sleeve can be better constrained when rotating, reducing the possibility of shaking and loosening. At the same time, a rotational limit connection is adopted between the connecting rod and the sleeve, and the inner wall of the sleeve is rotated to press against the limit protrusion, which not only limits the rotational freedom of the sleeve, but also improves the structural strength of the connection, thereby effectively reducing the risk of breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a three-dimensional enlarged view of the rocker structure of the medical nursing bed of the utility model;

[0019] Figure 2 This is a three-dimensional enlarged view of the rocker structure of the medical nursing bed of the utility model from another perspective;

[0020] Figure 3 This is a three-dimensional exploded enlarged view of the rocker structure of the medical nursing bed of the utility model;

[0021] Figure 4 This is a three-dimensional exploded enlarged view of the rocker structure of the medical nursing bed of the utility model from another perspective;

[0022] Figure 5 yes Figure 4 The enlarged view of point A in the middle;

[0023] Figure 6 yes Figure 4 The enlarged view of point B in the middle;

[0024] Figure 7 It is an enlarged schematic diagram of the cross-sectional structure of the rocker structure of the medical nursing bed of the utility model;

[0025] Figure 8 It is a three-dimensional enlarged view of the rotating seat of the utility model;

[0026] Fig. 9 The utility model is a schematic diagram of the structure of the medical nursing bed in a top view.

[0027] Illustration Description:

[0028] 1. Connecting rod; 11. Limiting protrusion; 12. Notch; 13. Positioning hole; 2. Sleeve; 21. Limiting tube; 3. Crank handle; 31. Rod body; 311. Through slot; 32. Rotating seat; 321. Fixed axis; 322. Limiting slot; 323. Rounded corner; 324. Side hole; 33. Handle; 4. Sleeve; 41. Socket; 42. Chamfer; 5. Latch; 6. Bed body; 61. First support rod; 62. Second support rod; 63. Screw rod; 64. Connecting tube. DETAILED DESCRIPTION

[0029] The following is a detailed explanation of the implementation of the present invention in conjunction with the accompanying drawings. The accompanying drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention.

[0030] Reference Figures 1 to 8A rocker structure of a medical nursing bed includes a rocker handle 3, a connecting rod 1 and a sleeve 2. The connecting rod 1 and the rocker handle 3 are connected through the sleeve 2. The cross-section of the sleeve 2 is an elliptical ring and is vertically arranged on the rocker handle 3. One end of the connecting rod 1 is rotationally limitedly connected to the sleeve 2, and the other end of the connecting rod 1 extends to the outside of the sleeve 2 along the axial direction of the sleeve 2. At least one limiting protrusion 11 is provided on the outer wall of the connecting rod 1. The limiting protrusion 11 is located in the sleeve 2, and the inner wall of the sleeve 2 rotates to press against the limiting protrusion 11.

[0031] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 When the crank handle 3 is in normal use, the entire crank handle 3 is L-shaped, and the crank handle 3 includes a rod body 31, a rotating seat 32 and a handle 33. The bottom of the rod body 31 is provided with a through slot 311, and the through slot 311 runs through the front and rear side walls of the rod body 31. A fixed shaft 321 is fixed in the through slot 311, and the two ends of the fixed shaft 321 are fixedly connected to the left and right side walls of the through slot 311. A long arc-shaped boss is also provided on the inner wall of the through slot 311, and the boss is located above the fixed shaft 321. The rotating seat 32 is T-shaped, and the handle 33 is hinged to the lower end of the rod body 31 through the rotating seat 32. Specifically, the top of the rotating seat 32 is provided with a long arc-shaped limiting groove 322, and the limiting groove 322 cooperates with the boss in the through slot 311, and the upper end of the rotating seat 32 is away from the connecting A rounded corner 323 is provided at the corner of the connecting rod 1 to facilitate the rotation and folding of the handle 33. A side hole 324 is provided on the upper end side of the rotating seat 32. The upper end of the rotating seat 32 is inserted into the through groove 311 and rotatably sleeved on the fixed shaft 321. The handle 33 is vertically and rotatably arranged on the side of the rotating seat 32. The cross-section of the handle 33 is elliptical. When the handle 33 is used normally, the handle 33 is vertically arranged to the rod body 31, and the boss on the inner wall of the through groove 311 is limitedly engaged with the limiting groove 322 at the top of the rotating seat 32. When the handle 33 is used, the user can push the handle 33 upward, and the handle 33 and the rotating seat 32 are rotated upward around the fixed shaft 321 together, and the boss on the inner wall of the through groove 311 is disengaged from the limiting groove 322 until the rotating seat 32 is rotated 90 degrees, and the handle 33 can be folded.

[0032] Reference Figures 3 to 7The sleeve 2 is vertically arranged at the upper end of the rod body 31. The sleeve 2 is in the shape of a long elliptical tube as a whole. A limiting tube 21 is extended outwardly along the axial direction of the end face of the sleeve 2. The cross section of the limiting tube 21 is a polygonal ring. In this embodiment, the cross section of the limiting tube 21 is preferably a hexagonal ring. The limiting tube 21 is integrally formed with the sleeve 2. Specifically, the sleeve 2 and the limiting tube 21 are pressed from the same circular tube, that is, the two opposite sides of one end of the circular tube are flattened to form an elliptical ring-shaped sleeve 2, and the other end of the circular tube is pressed in a hexagonal shape to form the limiting tube 21. At this time, the outer diameter of the limiting tube 21 is smaller than the maximum inner diameter of the sleeve 2.

[0033] Reference Figures 4 to 7 , the crank handle 3, the sleeve 2 and the connecting rod 1 together form a Z shape when in use. The connecting rod 1 is a solid rod and its cross section is polygonal. In order to match the inner wall of the limiting tube 21, the cross section of the connecting rod 1 is preferably hexagonal. The sleeve 2 is connected to the connecting rod 1 through the limiting tube 21 for rotation and limitation. Specifically, the limiting tube 21 is sleeved outside the connecting rod 1 and matches the connecting rod 1. A limiting protrusion 11 and a pair of notches 12 are respectively provided on the two opposite outer walls at one end of the connecting rod 1 close to the sleeve 2. The limiting protrusion 11 is located between the same pair of notches 12 on the same side. When the limiting tube 2 When sleeve 1 is sleeved outside the connecting rod 1, the hexagonal inner wall of the limiting tube 21 matches the hexagonal outer wall of the connecting rod 1 to form a primary rotation limit, limiting the rotational freedom of the sleeve 2. At this time, the two limiting protrusions 11 are both located in the sleeve 2. Since the inner wall of the sleeve 2 is elliptical, when the sleeve 2 rotates a certain angle, the two limiting protrusions 11 press against the elliptical inner wall of the sleeve 2 to form a secondary rotation limit, further limiting the rotational freedom of the sleeve 2, making the connection between the sleeve 2 and the connecting rod 1 more secure. A positioning hole 13 is penetrated at the end of the connecting rod 1 away from the crank 3.

[0034] Reference Figure 4 , Figure 6 and Fig. 9 In order to make the connecting rod 1 rotatably connected with the second support rod 62 of the bed body 6, a sleeve 4 is provided at the end limit sleeve of the connecting rod 1. The inner wall of the sleeve 4 is hexagonal and can match the inner wall of the connecting rod 1. A chamfer 42 is provided at the two openings of the sleeve 4 respectively. The side wall of the sleeve 4 is penetrated with a plug hole 41 along the radial direction of the sleeve 4. When the sleeve 4 is sleeved outside the connecting rod 1, the plug hole 41 is coaxially arranged with the positioning hole 13. A latch 5 is inserted in the positioning hole 13 and the plug hole 41, so that the sleeve 4 is fixedly connected with the connecting rod 1. The sleeve 4 is then rotatably connected with the second support rod 62 through a bearing. The screw rod 63 of the bed body 6 is coaxially fixedly connected with the connecting rod 1. In order to make the limiting tube 21 on the sleeve 2 rotatably connected with the first support rod 61 of the bed body 6, a connecting tube 64 is also sleeved outside the limiting tube 21. The structure of the connecting tube 64 is basically the same as that of the sleeve 4, which will not be elaborated here.

[0035] Reference Figures 1 to 9 The method of using the rocker structure of the medical nursing bed of the utility model is as follows:

[0036] Holding the handle 33, shaking the entire crank 3, the crank 3 drives the sleeve 2 to rotate, and then drives the connecting rod 1 to rotate, and the screw rod 63 also rotates synchronously with the connecting rod 1, driving the slider on the screw rod 63 to slide, and then pushing the head of the bed body 6 to tilt and rise and fall; after use, turn the handle 33 upward to fold the handle 33.

[0037] In the rocker structure of the medical nursing bed of the utility model, the sleeve 2 is no longer directly connected to the screw rod 63, but is connected through the connecting rod 1. This connection method not only increases the stability of the structure, but also improves the durability of the rocker. At the same time, the sleeve 2 is designed to be elliptical, and this shape design allows the sleeve 2 to be better constrained when rotating, reducing the possibility of shaking and loosening.

[0038] The rocker structure of the medical nursing bed of the utility model is provided with limiting protrusions 11 on the connecting rod 1, and these limiting protrusions 11 are closely matched with the inner wall of the sleeve 2 to form a rotation limit. This connection method not only limits the rotational freedom of the sleeve 2, but also improves the structural strength of the connection, thereby effectively reducing the risk of breakage.

[0039] The rocker structure of the medical nursing bed of the utility model effectively solves the problems of easy breakage, shaking and loosening of the existing rocker structure by improving the connection method, optimizing the shape of the sleeve 2 and adopting the method of protrusion and rotation limit connection. The rocker structure of the medical nursing bed of the utility model not only improves the use effect of the medical nursing bed and the use experience of the patient, but also provides a safer and more reliable nursing equipment for medical institutions.

[0040] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A rocker structure of a medical nursing bed, characterized in that: It includes a crank and a connecting rod, the connecting rod and the crank are connected by a sleeve, the cross-section of the sleeve is an elliptical ring and is vertically arranged on the crank, one end of the connecting rod is rotationally limitedly connected to the sleeve, and the other end of the connecting rod extends to the outside of the sleeve along the axial direction of the sleeve, and at least one limiting protrusion is provided on the outer wall of the connecting rod, the limiting protrusion is located in the sleeve, and the inner wall of the sleeve rotates to press against the limiting protrusion.

2. The rocker structure of the medical nursing bed according to claim 1, characterized in that: A limiting tube is extended outwardly from the end surface of the sleeve along its axial direction, and the sleeve is connected to the connecting rod through the limiting tube for rotation and limiting.

3. The rocker structure of the medical nursing bed according to claim 2, characterized in that: The cross section of the limiting tube is a polygonal ring, the cross section of the connecting rod is a polygonal shape, the outer diameter of the limiting tube is smaller than the maximum inner diameter of the sleeve, and the limiting tube is sleeved outside the connecting rod and matches the connecting rod.

4. The rocker structure of the medical nursing bed according to claim 2, characterized in that: The limiting tube and the sleeve are integrally formed.

5. The rocker structure of the medical nursing bed according to claim 1, characterized in that: At least one pair of notches is provided on the outer wall of the connecting rod, and the limiting protrusion is located between the same pair of notches.

6. The rocker structure of the medical nursing bed according to claim 1, characterized in that: The crank comprises a rod body, a rotating seat and a handle, wherein the handle is hinged to the lower end of the rod body through the rotating seat, and the sleeve is vertically arranged at the upper end of the rod body.

7. The rocker structure of the medical nursing bed according to claim 6, characterized in that: A through slot is provided at the bottom of the rod body, a fixed shaft is fixed in the through slot, the rotating seat is T-shaped, the upper end of the rotating seat is inserted into the through slot and rotatably sleeved on the fixed shaft.

8. The rocker structure of the medical nursing bed according to claim 7, characterized in that: A boss is provided on the inner wall of the through groove, a limiting groove is provided on the top of the rotating seat, the boss matches with the limiting groove, and a rounded corner is provided at the corner of the rotating seat away from the connecting rod.

9. The rocker structure of the medical nursing bed according to claim 7, characterized in that: The handle is vertically and rotatably arranged on the side of the rotating seat, and the cross section of the handle is elliptical.

10. The rocker structure of the medical nursing bed according to claim 1, characterized in that: The connecting rod, the sleeve and the crank together form a Z shape.

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