Medical lifting push rod with high self-locking force

Abstract

The utility model discloses a medical lifting push rod with strong self-locking force, which belongs to the technical field of medical lifting push rods, and adopts the technical scheme that the medical lifting push rod comprises a fixing sleeve, a fixing cover is arranged at the top of the fixing sleeve, a push rod body is connected in the fixing cover in a sliding manner, a gear is arranged in the push rod, and differential teeth are arranged in the fixing sleeve; a self-locking mechanism is arranged on the surface of the differential gear; the self-locking mechanism comprises two self-locking frames, two self-locking grooves, four moving columns and four connecting blocks, the opposite sides of the two self-locking frames make contact with the two sides of the moving columns correspondingly, the two self-locking grooves are formed in the opposite sides of the two self-locking frames, the surfaces of the moving columns make contact with the interiors of the self-locking frames, and the surfaces of the moving columns make contact with the interiors of the self-locking frames. The problems that in the using process of most existing medical lifting push rods, the self-locking capacity of the medical lifting push rods is poor, and when equipment large in size or heavy in weight is adjusted, the capacity of a push rod motor can be lowered under the long-time large-load effect are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical lifting push rods, in particular to a medical lifting push rod with strong self-locking force. Background Art

[0002] Medical lift actuators are used for adjusting and operating surgical instruments, such as raising and lowering operating tables and adjusting operating lights. In addition, they can also be used for controlling and operating various medical devices, which can increase the performance and stability of the equipment.

[0003] The Chinese patent publication number CN218961156U discloses an electric lifting push rod mechanism for a medical care bed, which relates to the technical field of medical beds. In this utility model, the moving seat and the two-way lifting component are rotatably matched; support mechanisms that are threadedly matched with the two-way lifting component are provided on both sides of the moving seat; connecting components that are rotatably matched with the moving seat are provided on both sides of the moving seat, and the other side of the connecting component is rotatably connected to the supporting mechanism; the internal threaded ring of the supporting mechanism is threadedly matched with the two-way lifting component, and the internal screw is threadedly matched with the internal threaded pipe, and the lower end of the internal screw is rotatably connected to the internal threaded ring, and the lifting gear is fixed on the internal screw and meshes with the horizontal rack on the moving seat for transmission. This utility model adopts a detachable connection method to assemble the electric lifting structure and the medical bed. When the medical bed needs to be moved to the required place, it is only necessary to move the electric lifting structure alone, thereby effectively avoiding space congestion caused by moving the entire medical bed.

[0004] Most existing medical lift push rods have poor self-locking capabilities during use. When adjusting large or heavy equipment, the ability of the push rod motor will decrease under long-term heavy loads. Utility Model Content

[0005] The utility model provides a medical lifting push rod with strong self-locking force, which aims to solve the problem that most existing medical lifting push rods have poor self-locking ability during use, and when adjusting large or heavy equipment, the ability of the push rod motor will decrease under long-term heavy load.

[0006] The utility model is realized as follows: a medical lifting push rod with strong self-locking force comprises a fixed sleeve, a fixed cover is provided on the top of the fixed sleeve, a push rod body is slidably connected to the interior of the fixed cover, a gear is provided inside the push rod, a differential gear is provided inside the fixed sleeve, and a self-locking mechanism is provided on the surface of the differential gear;

[0007] The self-locking mechanism includes two self-locking frames, two self-locking grooves, four movable columns and four connecting blocks. The opposite sides of the two self-locking frames are respectively in contact with the two sides of the movable columns. The two self-locking grooves are provided on the opposite sides of the two self-locking frames. The surface of the movable column is in contact with the interior of the self-locking frame. The side of the connecting block close to the self-locking frame is slidably connected to the self-locking frame, and the opposite sides of the two connecting blocks are in contact.

[0008] In order to achieve the effect of limiting the self-locking frame, a medical lifting push rod with strong self-locking force is preferably used in the present invention. The connecting block is fixedly connected to a moving block on the side close to the self-locking frame, and a moving groove is provided on the front and rear sides of the self-locking frame. The side of the moving block close to the moving groove extends to the inside of the moving groove and is slidably connected to the inside of the moving groove.

[0009] In order to facilitate the movement of the self-locking frame, a medical lifting push rod with strong self-locking force is preferably used in the present invention. The two self-locking frames are each provided with a connecting groove on the opposite side, and the side of the moving column close to the moving groove is slidably connected to the inside of the moving groove.

[0010] In order to achieve the effect of limiting the rotating ball, as a preferred medical lifting push rod with strong self-locking force of the utility model, the interior of the fixed sleeve is fixedly connected to two support blocks, and the top of the support block is rotatably connected to the rotating ball.

[0011] In order to achieve the effect of supporting the self-locking frame, as a preferred medical lifting push rod with strong self-locking force of the utility model, a support groove is opened at the bottom of the self-locking frame, and the surface of the rotating ball extends to the inside of the support groove and is rotatably connected to the inside of the support groove.

[0012] In order to facilitate the movement of the limit column, as a preferred medical lifting push rod with strong self-locking force in the present invention, four limit holes are opened on the surface of the fixed sleeve, and limit columns are arranged inside the limit holes. The opposite sides of the two limit columns are respectively fixedly connected to the surface of the self-locking frame.

[0013] In order to achieve the effect of driving the limit column to move, a medical lifting push rod with strong self-locking force is preferably used in the present invention. The surface of the fixed sleeve is fixedly connected to an electric telescopic column, and the surface of the electric telescopic column is fixedly connected to a connecting frame. The side of the connecting frame close to the limit column is fixedly connected to the limit column.

[0014] In order to achieve the effect of differential tooth limiting, a medical lifting push rod with strong self-locking force is preferably used in the present invention. The side of the differential tooth close to the self-locking groove extends to the inside of the self-locking groove and is in close contact with the inner wall of the self-locking groove, and the side of the connecting block close to the fixed sleeve is fixedly connected to the inside of the fixed sleeve.

[0015] In order to facilitate the rotation of the gears, a medical lifting push rod with strong self-locking force is preferably used in the present invention. A sealing cover is fixedly connected to the top of the fixed sleeve, and a rotating column is fixedly connected between the opposite side of the gear and the differential tooth. The surface of the rotating column is rotatably connected to the inner wall of the sealing cover.

[0016] In order to achieve the effect of driving the differential gear to rotate, as a preferred medical lifting push rod with strong self-locking force of the utility model, the interior of the fixed sleeve is fixedly connected to a motor, and the top of the motor output shaft is fixedly connected to the bottom of the differential gear.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The medical lifting push rod with strong self-locking force can conveniently drive the push rod body to move inside the fixed cover through the gear by rotating the surface of the differential gear and the interior of the fixed sleeve, and make the surface of the push rod body and the interior of the fixed cover connected in a sliding manner. The differential gear can be conveniently driven to move inside the fixed cover by the gear, and the side of the connecting block close to the self-locking frame is connected in a sliding manner to the self-locking frame, so that the self-locking frame can be conveniently moved on the surface of the moving column, thereby making the self-locking frame move toward one side of the differential gear through the connecting block, so that the surface of the differential gear can be extended to the interior of the self-locking groove and in close contact with the inner wall of the self-locking groove, so that the self-locking frame can lock the differential gear through the self-locking groove, thereby increasing the self-locking ability of the differential gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the overall structure diagram of the medical lifting push rod with strong self-locking force of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional connection between the rotating column and the sealing cover in the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional connection between the self-locking frame and the differential gear in the present utility model;

[0022] Figure 4 This is a three-dimensional connection diagram of the self-locking mechanism in the utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the self-locking frame in the utility model;

[0024] Figure 6 It is a schematic diagram of the three-dimensional connection between the connecting frame and the limiting column in the utility model.

[0025] In the figure, 1. fixed sleeve; 2. electric telescopic column; 3. fixed cover; 4. push rod body; 5. sealing cover; 6. gear; 7. rotating column; 8. self-locking mechanism; 801. self-locking frame; 802. self-locking groove; 803. moving column; 804. connecting block; 9. differential gear; 10. limiting column; 11. motor; 12. rotating ball; 13. supporting block; 14. moving block; 15. limiting hole; 16. supporting groove; 17. moving groove; 18. connecting groove; 19. connecting frame. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] In the description of the present invention, it should be understood that the terms "length," "width," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, in the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0028] See also Figure 1-6 The utility model provides a technical solution: a medical lifting push rod with strong self-locking force, comprising a fixed sleeve 1, a fixed cover 3 is provided on the top of the fixed sleeve 1, a push rod body 4 is slidably connected inside the fixed cover 3, a gear 6 is provided inside the push rod, a differential gear 9 is provided inside the fixed sleeve 1, and a self-locking mechanism 8 is provided on the surface of the differential gear 9;

[0029] The self-locking mechanism 8 includes two self-locking frames 801, two self-locking grooves 802, four movable columns 803 and four connecting blocks 804. The opposite sides of the two self-locking frames 801 are respectively in contact with the two sides of the movable columns 803. The two self-locking grooves 802 are opened on the opposite sides of the two self-locking frames 801. The surface of the movable column 803 is in contact with the inside of the self-locking frame 801. The side of the connecting block 804 close to the self-locking frame 801 is slidably connected to the self-locking frame 801, and the opposite sides of the two connecting blocks 804 are in contact.

[0030] In this embodiment: by rotating the surface of the differential gear 9 and the interior of the fixed sleeve 1, the surface of the push rod body 4 is slidably connected to the interior of the fixed cover 3, so that the differential gear 9 can be conveniently driven by the push rod body 4 to move inside the fixed cover 3 through the gear 6, and the connecting block 804 is close to the side of the self-locking frame 801 and is slidably connected to the self-locking frame 801, so that the self-locking frame 801 can be conveniently moved on the surface of the moving column 803, so that the self-locking frame 801 moves toward the side of the differential gear 9 through the connecting block 804, so that the surface of the differential gear 9 can be extended to the interior of the self-locking groove 802 and is in close contact with the inner wall of the self-locking groove 802, so that the self-locking frame 801 can lock the differential gear 9 through the self-locking groove 802, thereby increasing the self-locking ability of the differential gear 9.

[0031] As a technical optimization solution of the present invention, the connecting block 804 is fixedly connected to a moving block 14 on one side close to the self-locking frame 801, and a moving groove 17 is provided on the front and rear sides of the self-locking frame 801. The side of the moving block 14 close to the moving groove 17 extends to the interior of the moving groove 17 and is slidably connected to the interior of the moving groove 17.

[0032] In this embodiment, by making the surface of the moving block 14 slidably connected to the inside of the moving groove 17 , the moving block 14 can conveniently limit the self-locking frame 801 through the moving groove 17 , thereby achieving the effect of limiting the self-locking frame 801 .

[0033] As a technical optimization solution of the present invention, a connecting groove 18 is provided on opposite sides of the two self-locking frames 801 , and a side of the movable column 803 close to the movable groove 17 is slidably connected to the inside of the movable groove 17 .

[0034] In this embodiment, by providing connection grooves 18 on opposite sides of the two self-locking frames 801 , the self-locking frames 801 can be easily moved on the surface of the movable column 803 through the connection grooves 18 , thereby achieving the effect of facilitating the movement of the self-locking frames 801 .

[0035] As a technical optimization solution of the present invention, two support blocks 13 are fixedly connected inside the fixing sleeve 1 , and the top of the support block 13 is rotatably connected to a rotating ball 12 .

[0036] In this embodiment, by fixedly connecting the surface of the support block 13 to the inner wall of the fixing sleeve 1 , the support block 13 can limit the position of the rotating ball 12 , thereby achieving the effect of limiting the position of the rotating ball 12 .

[0037] As a technical optimization solution of the present invention, a support groove 16 is provided at the bottom of the self-locking frame 801 , and the surface of the rotating ball 12 extends into the interior of the support groove 16 and is rotatably connected to the interior of the support groove 16 .

[0038] In this embodiment, by rotatably connecting the surface of the rotating ball 12 with the interior of the supporting groove 16 , the rotating ball 12 can support the self-locking frame 801 through the supporting groove 16 , thereby achieving the effect of supporting the self-locking frame 801 .

[0039] As a technical optimization solution of the present invention, four limiting holes 15 are opened on the surface of the fixing sleeve 1, and limiting columns 10 are arranged inside the limiting holes 15. The opposite sides of the two limiting columns 10 are respectively fixedly connected to the surface of the self-locking frame 801.

[0040] In this embodiment, by providing a limiting hole 15 on the surface of the fixing sleeve 1 , the limiting post 10 can be easily moved through the limiting hole 15 , thereby achieving the effect of facilitating the movement of the limiting post 10 .

[0041] As a technical optimization solution of the present invention, the surface of the fixed sleeve 1 is fixedly connected to the electric telescopic column 2, and the surface of the electric telescopic column 2 is fixedly connected to the connecting frame 19. The side of the connecting frame 19 close to the limiting column 10 is fixedly connected to the limiting column 10.

[0042] In this embodiment, by fixing the connecting frame 19 to the limiting column 10 on one side thereof, the electric telescopic column 2 can be conveniently driven to move the limiting column 10 through the connecting frame 19 , thereby achieving the effect of driving the limiting column 10 to move.

[0043] As a technical optimization solution of the present invention, the side of the differential tooth 9 close to the self-locking groove 802 extends to the inside of the self-locking groove 802 and is in close contact with the inner wall of the self-locking groove 802, and the side of the connecting block 804 close to the fixed sleeve 1 is fixedly connected to the inside of the fixed sleeve 1.

[0044] In this embodiment, by making the inner wall of the self-locking groove 802 in close contact with the surface of the differential gear 9, the differential gear 9 can be conveniently limited and self-locked, thereby achieving the effect of limiting the position of the differential gear 9.

[0045] As a technical optimization solution of the present invention, a sealing cover 5 is fixedly connected to the top of the fixed sleeve 1, a rotating column 7 is fixedly connected between the gear 6 and the opposite side of the differential tooth 9, and the surface of the rotating column 7 is rotatably connected to the inner wall of the sealing cover 5.

[0046] In this embodiment, by making the surface of the rotating column 7 rotatably connected to the interior of the sealing cover 5 , the rotating column 7 can facilitate the rotation of the gear 6 , thereby achieving the effect of facilitating the rotation of the gear 6 .

[0047] As a technical optimization solution of the present invention, the interior of the fixed sleeve 1 is fixedly connected to the motor 11 , and the top of the output shaft of the motor 11 is fixedly connected to the bottom of the differential gear 9 .

[0048] In this embodiment, by fixing the top of the output shaft of the motor 11 to the bottom of the differential gear 9, the output shaft of the motor 11 can be easily driven to rotate the differential gear 9, thereby achieving the effect of driving the differential gear 9 to rotate.

[0049] Working principle: First, by making the output shaft of the motor 11 drive the differential gear 9 to rotate inside the fixed sleeve 1, the differential gear 9 can be easily driven to rotate the gear 6 through the rotating column 7, thereby driving the push rod body 4 to move to a suitable position inside the fixed cover 3, and then the electric telescopic column 2 is extended and retracted toward one side of the fixed sleeve 1, thereby driving the limiting column 10 to move inside the limiting hole 15 through the connecting frame 19, so that the opposite sides of the two limiting columns 10 are respectively fixedly connected to the surface of the self-locking frame 801, so that the self-locking frame 801 moves on the surface of the moving block 14 through the moving groove 17, so that the moving column 803 passes through the connecting groove 18 limits the self-locking frame 801, thereby facilitating the self-locking frame 801 to move on the surface of the rotating ball 12 through the support groove 16, so that the surface of the differential tooth 9 can extend to the inside of the self-locking groove 802 and be in close contact with the inner wall of the self-locking groove 802, so that the self-locking frame 801 can lock the differential tooth 9 through the self-locking groove 802, thereby increasing the self-locking ability of the differential tooth 9, solving the problem that the self-locking ability of most existing medical lifting push rods is poor during use, and when adjusting larger or heavier equipment, the ability of the push rod motor 11 will decrease under long-term heavy load.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A medical lifting push rod with strong self-locking force, comprising a fixing sleeve (1), characterized in that: A fixing cover (3) is provided on the top of the fixing sleeve (1), a push rod body (4) is slidably connected to the interior of the fixing cover (3), a gear (6) is provided inside the push rod, a differential gear (9) is provided inside the fixing sleeve (1), and a self-locking mechanism (8) is provided on the surface of the differential gear (9); The self-locking mechanism (8) comprises two self-locking frames (801), two self-locking grooves (802), four movable columns (803) and four connecting blocks (804). The opposite sides of the two self-locking frames (801) are in contact with the two sides of the movable columns (803) respectively. The two self-locking grooves (802) are provided on the opposite sides of the two self-locking frames (801). The surface of the movable columns (803) is in contact with the interior of the self-locking frames (801). The side of the connecting block (804) close to the self-locking frame (801) is slidably connected to the self-locking frame (801). The opposite sides of the two connecting blocks (804) are in contact.

2. A medical lifting push rod with strong self-locking force according to claim 1, characterized in that: The connecting block (804) is fixedly connected to a moving block (14) on one side close to the self-locking frame (801), and a moving groove (17) is provided on both the front and rear sides of the self-locking frame (801). The moving block (14) is extended to the inside of the moving groove (17) on one side close to the moving groove (17) and is slidably connected to the inside of the moving groove (17).

3. The medical lifting push rod with strong self-locking force according to claim 1, characterized in that: A connecting groove (18) is provided on opposite sides of the two self-locking frames (801), and a side of the movable column (803) close to the movable groove (17) is slidably connected to the inside of the movable groove (17).

4. The medical lifting push rod with strong self-locking force according to claim 1, characterized in that: Two support blocks (13) are fixedly connected inside the fixed sleeve (1), and the top of the support block (13) is rotatably connected to a rotating ball (12).

5. The medical lifting push rod with strong self-locking force according to claim 4, characterized in that: A support groove (16) is provided at the bottom of the self-locking frame (801), and the surface of the rotating ball (12) extends to the inside of the support groove (16) and is rotatably connected to the inside of the support groove (16).

6. The medical lifting push rod with strong self-locking force according to claim 1, characterized in that: Four limiting holes (15) are provided on the surface of the fixing sleeve (1), and limiting posts (10) are provided inside the limiting holes (15). The opposite sides of the two limiting posts (10) are fixedly connected to the surface of the self-locking frame (801) respectively.

7. The medical lifting push rod with strong self-locking force according to claim 1, characterized in that: The surface of the fixed sleeve (1) is fixedly connected to an electric telescopic column (2), the surface of the electric telescopic column (2) is fixedly connected to a connecting frame (19), and the connecting frame (19) is fixedly connected to the limiting column (10) on a side close to the limiting column (10).

8. The medical lifting push rod with strong self-locking force according to claim 1, characterized in that: The side of the differential gear (9) close to the self-locking groove (802) extends to the inside of the self-locking groove (802) and is in close contact with the inner wall of the self-locking groove (802), and the side of the connecting block (804) close to the fixing sleeve (1) is fixedly connected to the inside of the fixing sleeve (1).

9. The medical lifting push rod with strong self-locking force according to claim 1, characterized in that: A sealing cover (5) is fixedly connected to the top of the fixed sleeve (1), a rotating column (7) is fixedly connected between the gear (6) and the opposite side of the differential gear (9), and the surface of the rotating column (7) is rotatably connected to the inner wall of the sealing cover (5).

10. The medical lifting push rod with strong self-locking force according to claim 1, characterized in that: The interior of the fixed sleeve (1) is fixedly connected to a motor (11), and the top of the output shaft of the motor (11) is fixedly connected to the bottom of the differential gear (9).

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