Locking mechanism for auxiliary table of medical bed

Abstract

A medical bed auxiliary table locking mechanism is characterized in that the medical bed auxiliary table locking mechanism comprises a fixed base, the fixed base is provided with a main rotating arm and an auxiliary rotating arm in a rotating structure mode, and the other end of the main rotating arm and the other end of the auxiliary rotating arm are connected with the same supporting frame in a rotating structure mode; an arc-shaped rack is arranged at the end, away from the fixed base, of the main rotating arm in a fixed structure mode, a mounting base is arranged on the supporting frame in a fixed structure mode, a tooth block is arranged in the mounting base in a sliding structure mode, one end of the tooth block penetrates through the supporting frame to be meshed and matched with the arc-shaped rack, and a reset spring is arranged between the tooth block and the side wall of the mounting base; the gear block is connected with a stay wire, the other end of the stay wire is connected with a switch, the switch is connected with the auxiliary table through a hinged structure, a torsional spring is arranged at the hinged shaft of the switch and the auxiliary table, and the auxiliary table is connected with the supporting frame through a hinged structure. The existing functional requirements are met through a mechanical structure, the electrical risk is reduced, it is ensured that the auxiliary table has a good and stable working state, and the reliability is improved.

Description

Technical field:

[0001] The present application relates to the technical field of medical beds, and in particular to a locking mechanism for an auxiliary platform of a medical bed. Background technology:

[0002] Chinese utility model patent application number 201520459287.4 - Auxiliary table for delivery bed, comprising: a bracket; a rotating seat, the rotating seat is arranged on the bracket; a lifting assembly, the lifting assembly is arranged on the bracket; an auxiliary table body, the auxiliary table body is connected to the lifting assembly, the lifting assembly drives the auxiliary table body to move between an upward position away from the bracket and an initial position downward close to the bracket; a locking mechanism, the locking mechanism is connected to the rotating seat, when the auxiliary table body is in the initial position, the locking mechanism unlocks the rotating seat, when the auxiliary table body is in the raised position, the locking mechanism locks the rotating seat.

[0003] This patent utilizes the cooperation between a micro switch and the free end of a locking rod to achieve the locking of the rotating seat; however, as an electronic component, the micro switch may be subjected to mechanical shocks such as vibration and collision, or due to voltage, overcurrent, and electromagnetic interference, causing the internal circuit of the component to break or the solder joint to fall off, resulting in component performance degradation or failure, affecting use. Utility model content:

[0004] In order to solve the above technical problems, the present invention provides a locking mechanism for a medical bed auxiliary platform, and the technical solution adopted is:

[0005] A locking mechanism for an auxiliary table of a medical bed, comprising:

[0006] A fixed base, wherein the fixed base is provided with a main rotating arm and a secondary rotating arm in a rotating structure;

[0007] The support frame is connected to the other ends of the main rotating arm and the auxiliary rotating arm in a rotating structure;

[0008] An arc-shaped rack is connected to the end of the main rotating arm away from the fixed base in a fixed structural manner;

[0009] A mounting base, the mounting base is connected to the support frame in a fixed structural manner;

[0010] The tooth block is arranged inside the mounting seat in a sliding structure, and one end of the tooth block passes through the side wall of the support frame and meshes with the arc-shaped rack;

[0011] A return spring is located between the tooth block and the side wall of the mounting seat;

[0012] Pull wire, one end of which is connected to the tooth block;

[0013] A switch connected to a pull wire;

[0014] The auxiliary platform is connected to the support frame in a hinged structure.

[0015] Furthermore, a sleeve is provided at one end of the main rotating arm close to the support frame in a fixed structure manner, a rotating shaft is provided in the sleeve in a rotating structure manner, and the rotating shaft is connected to the support frame in a fixed structure manner.

[0016] Furthermore, the outer side wall of the sleeve is connected to the arc-shaped rack in a fixed structural manner.

[0017] Furthermore, a buckle is fixedly provided at one end of the pull wire;

[0018] The tooth block is provided with an embedding groove for accommodating the buckle, and one side of the embedding groove is connected to a first wire passing groove.

[0019] Furthermore, an adjustment column is fixedly provided on the pull line;

[0020] A through hole for the adjustment column to pass through is opened on the side elevation of the mounting seat;

[0021] A through hole for the buckle to pass through is provided on the lower end surface of the mounting seat, and a second wire passing groove is provided in communication with the mounting seat between the through hole and the threaded hole.

[0022] Furthermore, the adjusting column is provided with an adjusting nut through threaded engagement.

[0023] The beneficial effects of the present invention are: through the cooperation of the arc-shaped rack and the tooth block, the auxiliary platform and the main rotating arm are locked, the existing functional requirements are achieved through the mechanical structure, the electrical risks are reduced, the auxiliary platform is ensured to have a good and stable working state, and the reliability is improved. Description of the drawings:

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0025] Figure 2 It is a partial structural sectional schematic diagram of the utility model.

[0026] Figure 3 It is a schematic diagram of the exploded structure of the mounting seat and the gear block of the utility model.

[0027] In the picture:

[0028] 1. Fixed base, 2. Main rotating arm, 3. Secondary rotating arm, 4. Support frame, 5. Arc rack, 6. Mounting seat, 7. Tooth block, 8. Pull wire, 9. Auxiliary table, 10. Sleeve, 11. Rotating shaft, 12. Buckle, 13. Groove, 14. First wire groove, 15. Second wire groove, 16. Adjustment column, 17. Adjustment nut, 18. Through hole. Specific implementation method:

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will now be described in further detail with reference to the accompanying drawings and the following examples so that the public can better understand the implementation method of the present invention. The specific implementation scheme of the present invention is as follows:

[0030] A locking mechanism for an auxiliary table of a medical bed is characterized in that it includes a fixed base 1, the fixed base 1 is provided with a main rotating arm 2 and a secondary rotating arm 3 in a rotating structure, the other ends of the main rotating arm 2 and the secondary rotating arm 3 are connected to the same support frame 4 in a rotating structure, and the end of the main rotating arm 2 away from the fixed base 1 is provided with an arc-shaped rack 5 in a fixed structure, the support frame 4 is provided with a mounting seat 6 in a fixed structure, a tooth block 7 is provided inside the mounting seat 6 in a sliding structure, one end of the tooth block 7 passes through the support frame 4 and meshes with the arc-shaped rack 5, a reset spring is provided between the tooth block 7 and the side wall of the mounting seat 6, the tooth block 7 is connected to a pull wire 8, the other end of the pull wire is connected to a switch, the switch and the auxiliary table 9 are connected in a hinged structure, and a torsion spring is provided at the hinge axis of the switch and the auxiliary table, and the auxiliary table 9 is connected in a hinged structure. Through the cooperation of the arc-shaped rack 5 and the tooth block 7, the auxiliary platform 9 is locked with the main rotating arm 2, and the existing functional requirements are achieved through the mechanical structure, which reduces the electrical risks, ensures that the auxiliary platform has a good and stable working state, and improves reliability.

[0031] It should be noted that a sleeve 10 is provided at one end of the main rotating arm 2 close to the support frame 4 in a fixed structure manner, and a rotating shaft 11 is provided in the sleeve 10 in a rotating structure manner. The rotating shaft 11 is connected to the support frame 4 in a fixed structure manner, and the outer wall of the sleeve 10 is connected to the arc-shaped rack 5 in a fixed structure manner. That is, when the main rotating arm 2 rotates, it drives the sleeve 10 and the arc-shaped rack 5 to rotate at the same time. When rotation is not required, locking is achieved by the tooth block 7 and the arc-shaped rack 5 cooperating.

[0032] It should be explained that a buckle 12 is fixedly provided at one end of the pull wire 8, and the tooth block 7 is provided with a groove 13 for placing the buckle 12. A first wire groove 14 is provided on one side of the groove 13 to facilitate the connection between the pull wire 8 and the tooth block 7, and to facilitate installation and disassembly.

[0033] Furthermore, an adjusting column 16 is fixedly provided on the pull wire 8, and a through hole for the adjusting column 16 to pass through is provided on the side surface of the mounting seat 6; a through hole 18 for the buckle 12 to pass through is provided on the lower end surface of the mounting seat 6, and a second wire groove 15 is provided in communication with the mounting seat 6 between the through hole 18 and the threaded hole to facilitate the installation of the pull wire 8.

[0034] It should be noted that the adjusting column 16 is provided with an adjusting nut 17 in a threaded engagement manner, which is used to adjust the degree of engagement and compression between the tooth block and the arc-shaped rack.

[0035] The working principle and working process of this utility model are as follows:

[0036] When the position of the auxiliary table needs to be adjusted, the switch is pulled, and the switch pulls the buckle 12 through the pull wire 8. The buckle 12 pulls the tooth block 7 back into the mounting seat 6 and unlocks the arc-shaped rack 5, pushing the auxiliary table 9, forcing the main rotating arm 2 and the auxiliary rotating arm 3 to move, rotate and retract and hide under the medical bed. After it is completely hidden, the switch is released, and the tooth block 7 receives the elastic force of the spring, so that the tooth block 7 engages and locks with the arc-shaped rack 5.

[0037] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Although the present invention has been described based on a limited number of embodiments, those skilled in the art, with the benefit of the above description, should understand that other embodiments are conceivable within the scope of the present invention described herein.

Claims

1. A locking mechanism for a medical bed auxiliary platform, characterized in that: include: A fixed base (1), wherein the fixed base (1) is provided with a main rotating arm (2) and a secondary rotating arm (3) in a rotating structure; The support frame (4) is connected to the other ends of the main rotating arm (2) and the auxiliary rotating arm (3) in a rotating structure; An arc-shaped rack (5), the arc-shaped rack (5) being connected to an end of the main rotating arm (2) away from the fixed base (1) in a fixed structural manner; A mounting seat (6), the mounting seat (6) is connected to the support frame (4) in a fixed structural manner; A tooth block (7), the tooth block (7) is arranged inside the mounting seat (6) in a sliding structure, and one end of the tooth block (7) passes through the side wall of the support frame (4) and meshes with the arc-shaped rack (5); A return spring, the return spring being located between the tooth block (7) and the side wall of the mounting seat (6); A pull wire (8), one end of which is connected to the tooth block (7); A switch connected to a pull wire (8); The auxiliary platform (9) is connected to the support frame (4) in a hinged structure.

2. The locking mechanism for the auxiliary table of a medical bed according to claim 1, characterized in that: A sleeve (10) is provided at one end of the main rotating arm (2) close to the support frame (4) in a fixed structure manner, a rotating shaft (11) is provided in the sleeve (10) in a rotating structure manner, and the rotating shaft (11) is connected to the support frame (4) in a fixed structure manner.

3. The locking mechanism for the auxiliary table of a medical bed according to claim 2, characterized in that: The outer side wall of the sleeve (10) is connected to the arc-shaped rack (5) in a fixed structural manner.

4. The locking mechanism for the auxiliary table of a medical bed according to claim 1, characterized in that: One end of the pull wire (8) is fixedly provided with a buckle (12); The tooth block (7) is provided with an embedding groove (13) for accommodating the buckle (12), and one side of the embedding groove (13) is connected to a first wire passing groove (14).

5. The locking mechanism for the auxiliary table of a medical bed according to claim 4, characterized in that: An adjusting column (16) is fixedly provided on the pull wire (8); A through hole for the adjustment column (16) to pass through is provided on the side surface of the mounting seat (6); A through hole (18) for the buckle (12) to pass through is provided on the lower end surface of the mounting seat (6), and a second wire groove (15) is provided in communication between the through hole (18) and the threaded hole of the mounting seat (6).

6. The locking mechanism for the auxiliary table of a medical bed according to claim 5, characterized in that: The adjusting column (16) is provided with an adjusting nut (17) in a threaded engagement manner.

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