Implementation method of automatic latch mechanism

Abstract

The application discloses an automatic lock mechanism and a realization method thereof. The automatic lock mechanism is provided with an A shaft and a B shaft, a limiting plate wrench rotatable along the A shaft, a lock latch rotatable along the B shaft and matched with the limiting plate wrench, a lock catch matched with the lock latch and used in cooperation, and a tension spring with one end connected with the limiting plate wrench and the other end connected with the lock latch. The automatic lock mechanism is capable of achieving any one of an unlocking state or a self-locking state by rotating the limiting plate wrench. In the unlocking state, the tension line of the tension spring is located above the shaft center of the A shaft. In the self-locking state, the tension line of the tension spring is located below the shaft center of the A shaft. The application provides the realization method of the automatic lock mechanism, so that the automatic lock mechanism can quickly complete unlocking and automatically restore the self-locking state after the function is completed, the number of manual operations is reduced, the use effect of the product is greatly improved, and the use difficulty and use risk of the product are reduced.

Description

A method for implementing an automatic locking mechanism Technical Field

[0001] This application relates to the field of medical devices, and more specifically to a method for implementing an automatic locking mechanism. Background Technology

[0002] Medical beds are a common type of medical equipment, widely used in many medical institutions. With societal development, people's demands for medical equipment are gradually increasing, especially during emergency patient care, where the equipment used faces even stricter requirements.

[0003] In emergency patient care, every second counts. To perform certain emergency procedures, medical staff need an open operating platform. Therefore, when a patient requires emergency care on a medical bed, medical staff will lower the side rails and remove the headboard and footboard to create the necessary conditions. This requires the headboard and footboard to be removed quickly.

[0004] Meanwhile, medical beds often need to be equipped with wheels to facilitate pushing or transferring patients. When pushing a medical bed, medical staff will use the headboard and footboard to apply force to push the bed, and at this time, it is required that the headboard and footboard will not loosen or even fall off due to the force.

[0005] Currently used medical beds often have multiple locking devices on the headboard and footboard. The disassembly and assembly process involves: first, unlocking the front, back, left, and right side latches; second, removing the headboard and footboard; third, administering first aid; fourth, reinstalling the headboard and footboard; and fifth, medical staff manually resetting the latches. Therefore, the disassembly and assembly of the headboard and footboard is complex and inefficient, significantly wasting valuable time in patient resuscitation.

[0006] In addition, the reset latches of medical beds are usually located in the narrow gaps between the headboard and footboard and the mattress. This is not only inconvenient to use, but also makes it easy for medical staff to forget to reset the latches. Therefore, this may cause accidents during the normal use or movement of the medical bed, increasing the risk of using the medical bed. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this application provides a method for implementing an automatic locking mechanism, which enables the automatic locking mechanism to quickly unlock and automatically restore its self-locking state after the function is completed. This reduces the number of manual operations required, greatly improves the product's usability, and reduces the difficulty and risk of using the product.

[0008] An automatic locking mechanism is provided, wherein the automatic locking mechanism is provided with an A-axis and a B-axis, a limit wrench that can rotate along the A-axis, a latch that can rotate along the B-axis and cooperates with the limit wrench, a latch that matches and cooperates with the latch, and a tension spring that is connected at one end to the limit wrench and at the other end to the latch.

[0009] The automatic locking mechanism can achieve either an unlocked state or a self-locking state by rotating the limit wrench.

[0010] In the unlocked state, the tension line of the tension spring is located above the axis of A, meaning that the tension spring applies a clockwise rotational force to the limit wrench;

[0011] In the self-locking state, the tension line of the tension spring is located below the axis of A, meaning that the tension spring applies a counterclockwise rotational force to the limit wrench.

[0012] Preferably, the automatic locking mechanism is further provided with a limiting structure A for limiting the rotation range of the limiting wrench, and limiting structures B1 and B2 for limiting the rotation range of the latch.

[0013] The limiting plate is provided with a limiting part, and the latch is provided with a mating part that cooperates with the limiting part;

[0014] When the automatic locking mechanism is in the unlocked state, the latch can rotate along axis B within the range of limiting structure B1 and limiting structure B2.

[0015] When the automatic locking mechanism is in the self-locking state, if the mating part is located between the limiting part and the limiting structure B1, the latch can only rotate within the range of the limiting structure B1 and the limiting part.

[0016] When the automatic locking structure is in the self-locking state, if the mating part is located between the limiting part and the limiting structure B2, the latch can be rotated clockwise to the limiting structure B2 and counterclockwise through the mating part to the limiting structure B1.

[0017] The specific implementation process of the automatic locking mechanism includes the following steps:

[0018] (A) Remain locked;

[0019] (B) Manual unlocking;

[0020] (C) The latch disengages when rotated clockwise;

[0021] (D) The limit wrench automatically resets;

[0022] (E) The latch is self-locking when rotated counterclockwise.

[0023] In step (A), the automatic locking mechanism is in a self-locking state, with the mating part located between the limiting part and the limiting structure B1. That is, the latch can only rotate within the range of the limiting structure B1 and the limiting part. The tension line of the tension spring is located below the axis of A. That is, the tension spring gives the limiting wrench a counterclockwise rotational force, thereby making the automatic locking mechanism maintain the self-locking state.

[0024] In step (B), manually rotate the limit wrench clockwise so that the limit wrench rotates around axis A. When the limit wrench rotates, the tension line of the tension spring moves from below the axis of axis A to above the axis of axis A. This means that the tension spring applies a clockwise rotational force to the limit wrench. Therefore, the limit wrench will maintain its current state under the action of the tension force, thereby causing the automatic locking mechanism to enter the unlocked state.

[0025] In step (C), when the latch is pulled out, it causes the latch to rotate around axis B. The tension line of the tension spring will move to below the axis of B. Under the action of the tension, the latch rotates through the limiting part and moves to the limiting structure B2.

[0026] In step (D), during the process of step (C), the tension line of the tension spring will gradually move downward until it reaches a position below the center of axis A. Under the tension of the tension spring, the limit wrench will rotate counterclockwise around axis A and return to the self-locking state.

[0027] In step (E), the latch is inserted and pushes the latch to rotate counterclockwise, so that the tension line of the tension spring always remains below axis A. When the mating part passes the limiting part, the self-locking is completed, and the state of step (A) is entered again.

[0028] Compared with the prior art, the embodiments of this application have the following beneficial effects:

[0029] This invention enables the automatic locking mechanism to quickly unlock and automatically return to the self-locking state after the function is completed, reducing the number of times manual operation is required, greatly improving the product's performance, and reducing the difficulty and risk of using the product.

[0030] Some of the additional features of this application will be described in the following description. These additional features will become apparent to those skilled in the art upon examination of the following description and the accompanying drawings, or upon understanding the production or operation of the embodiments. The features disclosed in this application can be implemented and achieved through the practice or use of various methods, means, and combinations thereof with respect to the specific embodiments described below. Attached Figure Description

[0031] The accompanying drawings, which are provided to further illustrate this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute a limitation thereof. In the drawings, the same reference numerals denote the same components.

[0032] Figure 1 is a schematic diagram of the structure of the present invention.

[0033] Figure 2 is a schematic diagram of the structure of the latch of the present invention.

[0034] Figure 3 is a schematic diagram of the structure of the latch of the present invention.

[0035] Figure 4 is a schematic diagram of the structure of the limiting wrench of the present invention.

[0036] Figure 5 is a schematic diagram of the structure of process (A) of the present invention.

[0037] Figure 6 is a schematic diagram of the structure of process (B) of the present invention.

[0038] Figure 7 is a schematic diagram of the structure of the tension line above the B-axis center in process (C) of the present invention.

[0039] Figure 8 is a schematic diagram of the structure of the tension line below the B-axis center in process (C) of the present invention.

[0040] Figure 9 is a schematic diagram of the process (D) of the present invention.

[0041] Figure 10 is a schematic diagram of the process (E) of the present invention.

[0042] Explanation of reference numerals in the attached diagram: 10, latch; 20, lock seat; 21, A-axis hole; 22, stop plate; 23, latch groove; 24, guide V-groove; 25, B-axis hole; 26, limiting plate; 27, limiting groove; 30, latch; 31, lower contact arc surface; 32, anti-reverse surface; 33, top arc surface; 34, limiting arc edge; 35, upper contact arc surface; 36, B-axis sleeve; 37, limiting edge; 38, latch slot; 40, limiting wrench; 41, handle; 42, inner side edge; 43, A-axis sleeve; 44, wrench slot; 45, concave arc surface; 46, limiting surface; 47, outer side edge; 50, A-axis; 60, B-axis; 70, tension spring. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0044] It should be noted that if the terms "first," "second," etc., are used in the specification, claims, and accompanying drawings of this application, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0045] In this application, when terms such as "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" are used, they indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0046] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0047] Furthermore, in this application, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0049] Example 1

[0050] As shown in Figure 1, an automatic locking mechanism is implemented. The automatic locking mechanism is provided with an A-axis 50 and a B-axis 60, a limit wrench 40 that can rotate along the A-axis 50, a latch 30 that can rotate along the B-axis 60 and cooperates with the limit wrench 40, a latch 10 that matches and cooperates with the latch 30, and a tension spring 70 that is connected at one end to the limit wrench 40 and at the other end to the latch 30.

[0051] The automatic locking mechanism can achieve either an unlocked state or a self-locking state by rotating the limit wrench 40.

[0052] In the unlocked state, the tension line of the tension spring 70 is located above the axis of the A-axis 50, that is, the tension spring 70 applies a clockwise rotational force to the limit wrench 40;

[0053] In the self-locking state, the tension line of the tension spring 70 is located below the axis of the A-axis 50, that is, the tension spring 70 applies a counterclockwise rotational force to the limit wrench 40.

[0054] The automatic locking mechanism is further provided with a limiting structure A for limiting the rotation range of the limiting wrench 40, and limiting structures B1 and B2 for limiting the rotation range of the latch 30.

[0055] The limiting wrench 40 is provided with a limiting part, and the latch 30 is provided with a mating part that cooperates with the limiting part;

[0056] When the automatic locking mechanism is in the unlocked state, the latch 30 can rotate along the B axis 60 within the range of the limiting structure B1 and the limiting structure B2.

[0057] When the automatic locking mechanism is in the self-locking state, if the mating part is located between the limiting part and the limiting structure B1, the latch 30 can only rotate within the range of the limiting structure B1 and the limiting part.

[0058] When the automatic locking structure is in a self-locking state, if the mating part is located between the limiting part and the limiting structure B2, the latch 30 can rotate clockwise to the limiting structure B2 and counterclockwise through the mating part to the limiting structure B1.

[0059] As shown in Figure 5-10, the specific implementation process of the automatic locking mechanism includes the following steps:

[0060] (A) Remain locked;

[0061] The automatic locking mechanism is in a self-locking state, with the mating part located between the limiting part and the limiting structure B1. That is, the latch 30 can only rotate within the range of the limiting structure B1 and the limiting part. The tension line of the tension spring 70 is located below the axis of the A-axis 50. That is, the tension spring 70 provides the limiting wrench 40 with a counterclockwise rotational force, thereby maintaining the self-locking state of the automatic locking mechanism.

[0062] In actual use, the latch usually needs to cooperate with the latch 10. The rotation of the latch is mainly achieved by the force applied to the latch by inserting or pulling out the latch. In this step, the rotation range of the latch is limited between the limiting structure B1 and the limiting part, which can effectively prevent the latch from being pulled out and achieve the purpose of locking the latch.

[0063] (B) Manual unlocking;

[0064] Manually rotate the limit wrench 40 clockwise, causing it to rotate around axis A 50. As the limit wrench 40 rotates, the tension line of the tension spring 70 moves from below the axis of axis A 50 to above it, thus applying a clockwise rotational force to the limit wrench 40. Consequently, the limit wrench 40 will maintain its current state under the action of the tension force, thereby causing the automatic locking mechanism to enter the unlocked state.

[0065] (C) The latch disengages when rotated clockwise;

[0066] When the latch 10 is pulled out, it causes the latch 30 to rotate around the B-axis 60. The tension line of the tension spring 70 will move to the area below the axis of the B-axis 60. Under the action of the tension, the latch 30 rotates past the limiting part and moves to the limiting structure B2.

[0067] When the latch is pulled outward, the latch rotates under the action of the latch. Before the latch rotates to the limiting structure B2, the latch will disengage from the latch. After the latch disengages from the latch, the latch will continue to rotate under the tension of the tension spring until it rotates to the limiting structure B2.

[0068] (D) The limit wrench automatically resets;

[0069] During step (C), the tension line of the tension spring 70 will gradually move downward until it reaches a position below the axis of A-axis 50. Under the tension of the tension spring 70, the limit wrench 40 will rotate counterclockwise around the A-axis 50 and return to the self-locking state.

[0070] (E) The latch self-locks when rotated counterclockwise;

[0071] The latch 10 is inserted and pushes the latch 30 to rotate counterclockwise, so that the tension line of the tension spring 70 is always kept below the A-axis 50. When the mating part passes the limiting part, the self-locking is completed, and the state of step A is entered again.

[0072] When the latch is inserted inward, the latch rotates under the action of the latch. After the latch rotates past the limit part, a self-locking mechanism is formed between the latch and the limit wrench. The rotation range of the latch is limited between the limit structure B1 and the limit part, effectively preventing the latch from being pulled out and achieving the purpose of locking the latch.

[0073] Example 2

[0074] This embodiment is a specific implementation of the method in Embodiment 1, including a medical bed, a headboard and a footboard mounted on the medical bed, and an automatic locking mechanism mounted on the medical bed that cooperates with the headboard and footboard. The automatic locking mechanism includes a lock seat 20, a latch 30 mounted on the lock seat 20, a limiting wrench 40 mounted on the lock seat 20 and cooperating with the latch 30, and a U-shaped latch 10 mounted on the headboard or footboard that cooperates with the lock seat 20 and the latch 30. The limiting wrench 40 is movably fixed to the lock seat 20 via an A-axis 50, and the latch 30 is movably fixed to the lock seat 20 via a B-axis 60. A tension spring 70 is provided between the latch 30 and the limiting wrench 40.

[0075] As shown in Figure 2, the lock base 20 consists of a base plate, a vertical plate vertically mounted on the base plate, an A-axis hole 21 located on one side of the vertical plate and penetrating the vertical plate, a B-axis hole 25 located on the opposite side of the vertical plate and penetrating the vertical plate, a locking groove 23 located on the upper edge of the vertical plate and between the A-axis hole 21 and the B-axis hole 25, a limiting groove 27 penetrating the lower edge of the vertical plate and penetrating downward through the base plate, and a stop plate 22 and a limiting plate 26 mounted on the vertical plate.

[0076] Among them, the limiting groove is one implementation structure of limiting structure A, the stop plate is one implementation structure of limiting structure B1, and the limiting plate is one implementation structure of limiting structure B2.

[0077] The horizontal height of the A-axis hole 21 is higher than that of the B-axis hole 25. The limiting groove 27 is located directly below the A-axis hole 21. The stop plate 22 is located directly below the locking groove 23. The limiting plate 26 is located to the lower right of the B-axis hole 25.

[0078] The locking groove 23 matches the locking buckle 10 and extends upward through the vertical plate; the locking groove 23 is also provided with a guide V-groove 24 for widening its opening.

[0079] As shown in Figure 3, the latch 30 consists of a plate-shaped fork head, a fork tail located at the end of the fork head and perpendicular to the fork head, a top arc surface 33 located at the front end of the fork head, a stop surface 32 located at the front end of the upper side of the fork head, a lower contact arc surface 31 located on the upper side of the front section of the fork head and adjacent to the stop surface 32, a limiting arc edge 34 located on the lower front section of the fork head and adjacent to the top arc surface 33, an upper contact arc surface 35 located above the lower contact arc surface 31 and forming a groove with the contact arc surface that matches the latch 10, a B-shaft sleeve 36 located in the middle section of the fork head and penetrating the fork head, a limiting edge 37 located on the rear section of the lower side of the fork head, and a latch groove 38 located at the end of the fork tail.

[0080] Among them, the anti-reverse surface is one type of realization structure of the mating part.

[0081] The length of the upper contact arc surface 35 is less than the length of the lower contact arc surface 31. The limiting arc edge 34 cooperates with the stop plate 22. The limiting edge 37 cooperates with the limiting plate 26. The B-shaft sleeve 36 cooperates with the B-shaft 60.

[0082] As shown in Figure 4, the limiting wrench 40 consists of an "L"-shaped mating head, a mating tail located at the end of the short side of the mating head and perpendicular to the mating head, a handle 41 located at the front end of the long side of the mating head, an A-sleeve 43 located at the intersection of the long and short sides of the mating head and penetrating the mating head, and a wrench groove 44 located at the end of the mating tail. The inner side of the long side of the mating head is the inner side 42, and the outer side of the long side is the outer side 47. The outer side of the long side of the mating head is provided with a limiting surface 46 with an obtuse angle to the outer side. The outer side of the long side of the mating head is also provided with a concave arc surface 45 that connects with the limiting surface 46.

[0083] Among them, the limiting surface is one implementation structure of the limiting part.

[0084] The A-axis sleeve 43 mates with the A-axis 50, the limiting surface 46 mates with the anti-retraction surface 32, the concave arc surface 45 mates with the top arc surface 33, and the long side of the mating head extends through the limiting groove 27 and penetrates the bottom plate.

[0085] One end of the tension spring 70 is fixed to the latch groove 38, and the other end is fixed to the wrench groove 44.

[0086] It should be noted that all features disclosed in this specification, or all steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.

[0087] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this invention, and these solutions all fall within the scope of this invention and its protection. Those skilled in the art should understand that this specification and its accompanying drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this invention is defined by the claims and their equivalents.

Claims

1. A method for implementing an automatic locking mechanism, characterized in that, The automatic locking mechanism includes an A-axis (50) and a B-axis (60), a limit wrench (40) that can rotate along the A-axis (50), a latch (30) that can rotate along the B-axis (60) and cooperates with the limit wrench (40), a lock buckle (10) that matches and cooperates with the latch (30), and a tension spring (70) with one end connected to the limit wrench (40) and the other end connected to the latch (30); the automatic locking mechanism also includes a limit for limiting the rotation range of the limit wrench (40). Structure A, and limiting structures B1 and B2 for limiting the rotation range of the latch (30); the limiting wrench (40) is provided with a limiting part, and the latch (30) is provided with a mating part that cooperates with the limiting part; the automatic locking mechanism can reach either the unlocked state or the self-locking state by rotating the limiting wrench (40); the limiting wrench (40) is manually rotated clockwise, so that the limiting wrench (40) rotates around axis A (50), and the tension line of the tension spring (70) is on the limiting wrench (50). 40) During rotation, the mechanism moves from below the axis of A (50) to above the axis of A (50), thereby causing the automatic locking mechanism to enter the unlocked state; in the unlocked state, the tension line of the tension spring (70) is located above the axis of A (50), that is, the tension spring (70) gives the limit wrench (40) a clockwise rotational tension; when the latch (10) is pulled out, it drives the latch (30) to rotate around the axis of B (60), and the tension line of the tension spring (70) moves downward to a position below the axis of A (50), and the automatic locking mechanism enters the unlocked state; in the unlocked state, the tension line of the latch (70) is located above the axis of A (50), that is, the tension spring (70) gives the limit wrench (40) a clockwise rotational tension; when the latch (10) is pulled out, it drives the latch (30) to rotate around the axis of B (60), and the tension line of the latch (70) moves downward to a position below the axis of A (50), and the automatic locking mechanism enters the unlocked state; in the unlocked state, the tension line of the latch (70) moves downward to a position below the axis of A (50), and the automatic locking mechanism enters the unlocked state. Under the tension of the spring (70), the limit wrench (40) will rotate counterclockwise around the A-axis (50) and return to the self-locking state; the latch (10) is inserted and pushes the latch (30) to rotate counterclockwise, and the tension line of the spring (70) is always kept below the A-axis (50). When the mating part passes the limit part, the self-locking is completed; in the self-locking state, the tension line of the spring (70) is located below the axis of the A-axis (50), that is, the spring (70) gives the limit wrench (40) a tension force that rotates counterclockwise.

2. The method for implementing an automatic locking mechanism according to claim 1, characterized in that, When the automatic locking mechanism is in the unlocked state, the latch (30) can rotate along the B axis (60) within the range of the limiting structure B1 and the limiting structure B2; when the automatic locking mechanism is in the self-locking state, if the mating part is located between the limiting part and the limiting structure B1, the latch (30) can only rotate within the range of the limiting structure B1 and the limiting part; when the automatic locking mechanism is in the self-locking state, if the mating part is located between the limiting part and the limiting structure B2, the latch (30) can rotate clockwise to the limiting structure B2 and can rotate counterclockwise through the mating part to the limiting structure B1.

3. The method for implementing an automatic locking mechanism according to claim 2, characterized in that, The specific implementation process of the automatic locking mechanism includes the following steps: (A) maintaining the lock; (B) manually unlocking; (C) rotating the latch clockwise to disengage; (D) automatically resetting the limit wrench; (E) rotating the latch counterclockwise to self-lock.

4. The method for implementing an automatic locking mechanism according to claim 3, characterized in that, In step (A), the automatic locking mechanism is in a self-locking state, and the mating part is located between the limiting part and the limiting structure B1. That is, the latch (30) can only rotate within the range of the limiting structure B1 and the limiting part. The tension line of the tension spring (70) is located below the axis of the A-axis (50). That is, the tension spring (70) gives the limiting wrench (40) a counterclockwise rotational force, thereby making the automatic locking mechanism maintain the self-locking state.

5. The method for implementing an automatic locking mechanism according to claim 4, characterized in that, In step (B), the tension spring (70) applies a clockwise rotational force to the limit wrench (40), so the limit wrench (40) will remain in the unlocked state under the action of the tension.

6. The method for implementing an automatic locking mechanism according to claim 5, characterized in that, In step (C), the tension line of the tension spring (70) moves to below the axis of B (60), and the latch (30) rotates under the action of the tension, passes through the limiting part, and moves to the limiting structure B2.

7. The method for implementing an automatic locking mechanism according to claim 6, characterized in that, After the self-locking is completed in step (E), the system will re-enter the state of step (A).

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