Hinge mechanism for medical bed armrest

Abstract

The utility model discloses a hinge mechanism for an armrest of a medical bed, which comprises a fixing piece, a hinge piece and a connecting piece, the rotating piece is rotationally matched with the fixed piece and is provided with a second limiting part; the locking piece is provided with a third limiting part and can move relative to the fixed piece and the rotating piece, so that the hinge mechanism has a first state and a second state, and in the first state, the third limiting part abuts against the first limiting part and the second limiting part; in the second state, the third limiting part abuts against the first limiting part, the rotating piece can rotate relative to the fixed piece, rising and falling of the medical bed armrest can be achieved, and locking can be conducted in the rising state.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a hinge mechanism for an armrest of a medical bed. Background Art

[0002] Medical beds generally refer to medical beds or nursing beds, which are mostly used in hospitals or homes for patients or elderly people who need to stay in bed. They generally include a bed body and armrests on both sides of the bed body. After the armrests on both sides of the bed body are raised, they can prevent the table from being used for patients or elderly people to eat. The armrests generally have a lifting function, such as using a connecting rod structure to achieve forward movement and folding of the armrests; or as in the Chinese patent application with application number 2018102312561 and the name of the lifting armrest mechanism for medical beds, the protective armrests can rotate around the bed body to ensure that the protective armrests always remain vertical, but the structure is relatively complex and a gas rod is also provided, which is costly. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a novel hinge mechanism for a medical bed armrest, which can realize the raising and lowering of the medical bed armrest and can also lock it in the raised state, and has a low cost.

[0004] The utility model adopts the following technical solutions:

[0005] The hinge mechanism for a medical bed armrest comprises: a fixed part having a first limiting part; a rotating part, which is rotatably matched with the fixed part and has a second limiting part; a locking part, which has a third limiting part and can move relative to the fixed part and the rotating part, so that the hinge mechanism has a first state and a second state. In the first state, the third limiting part is located between the first limiting part and the second limiting part, that is, the third limiting part is simultaneously attached to the surfaces of the first limiting part and the second limiting part. At this time, the rotating part cannot rotate relative to the fixed part; the locking part is moved to one side so that the third limiting part moves toward the first limiting part, and the third limiting part is no longer in contact with the second limiting part, and is in the second state. At this time, the rotating part can rotate relative to the fixed part. The medical bed armrest is installed on the rotating part, so that the medical bed armrest can be rotated relative to the bed body, and the medical bed armrest can be raised and lowered.

[0006] Preferably, the first limiting portion and the second limiting portion are groove structures, and the third limiting portion is a corresponding convex structure; or the first limiting portion and the second limiting portion are convex structures, and the third limiting portion is a corresponding concave structure.

[0007] Preferably, the fixing member comprises a connecting portion and a receiving portion located at one side of the connecting portion, the receiving portion has a first receiving cavity for receiving the locking member, and the first receiving cavity is recessed toward one side to form a first limiting portion.

[0008] Preferably, the rotating member comprises a rotating part and a mounting rod located on the rotating part, the rotating part has a second accommodating cavity for accommodating the locking member, and the second accommodating cavity is recessed toward one side to form a second limiting portion.

[0009] Preferably, a connecting block is provided on the rotating part, a connecting plate is provided on the connecting block, and a mounting rod is provided on the connecting plate to facilitate the installation of the medical bed armrest.

[0010] Preferably, in the first state, the mounting rod is arranged vertically upward so that the armrests of the medical bed are arranged upward.

[0011] Preferably, a handle is provided at one end of the locking member to facilitate movement of the locking member.

[0012] Preferably, a blocking member is provided at one end of the locking member, a third accommodating cavity is provided at one end of the rotating member, and an elastic reset member is provided between the blocking member and the end surface of the third accommodating cavity.

[0013] Preferably, in the second state, the elastic return member is in a compressed state. If the medical bed armrest needs to be used, the rotating member can be rotated to flip the medical bed armrest upward. Then, under the action of the elastic return member in the compressed state, the locking member can automatically move in the opposite direction, so that the third limiting portion moves into the first limiting portion and the second limiting portion, thereby realizing the locking function.

[0014] Preferably, the elastic return member is a spring.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. The utility model provides a novel hinge mechanism for an armrest of a medical bed, comprising a fixed part, a rotating part and a locking part. The rotating part is provided with an armrest, and the rotating part can rotate relative to the fixed part to realize the raising and lowering of the armrest of the medical bed.

[0017] 2. The locking member can move relative to the fixed member and the rotating member to limit the rotating member, thereby locking the medical bed armrest in the raised state to prevent the armrest from falling due to its own gravity or human touch.

[0018] 3. The hinge mechanism has a simple structure and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the hinge mechanism.

[0020] Figure 2 A cross-sectional view of the hinge mechanism.

[0021] Figure 3 It is a cross-sectional view of the fixed part and the rotating part.

[0022] Figure 4 It is a schematic diagram of the structure of the rotating part.

[0023] Figure 5 A schematic diagram of the structure of the fixing parts.

[0024] Figure 6 It is a schematic diagram of the structure of the locking member.

[0025] In the figure, a fixing member 1, a first limiting portion 1-1, a connecting portion 1-2, an accommodating portion 1-3, a first accommodating cavity 1-4, a rotating member 2, a second limiting portion 2-1, a rotating portion 2-2, a mounting rod 2-3, a second accommodating cavity 2-4, a third accommodating cavity 2-5, a locking member 3, a third limiting portion 3-1, a hand-held portion 3-2, a blocking member 4, and an elastic reset member 5. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the technical solution of the utility model, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] like Figure 1-6 As shown, the hinge mechanism for the medical bed armrest comprises:

[0029] A fixing member 1, connected to one side of the medical bed, having a first limiting portion 1-1;

[0030] The rotating member 2 is rotatably matched with the fixing member 1 and has a second limiting portion 2-1;

[0031] The locking member 3 has a third limiting portion 3-1 and can move relative to the fixed member 1 and the rotating member 2, so that the hinge mechanism has a first state and a second state;

[0032] In the first state, the third limiting portion 3-1 abuts against the first limiting portion 1-1 and the second limiting portion 2-1, so that the rotating member 2 cannot rotate relative to the fixing member 1;

[0033] In the second state, the third limiting portion 3 - 1 abuts against the first limiting portion 1 - 1 , unlocking the rotating member 2 , and the rotating member 2 can rotate relative to the fixing member 1 .

[0034] As an embodiment, in the first state, the third limiting portion 3-1 is located between the first limiting portion 1-1 and the second limiting portion 2-1, that is, the third limiting portion 3-1 is simultaneously attached to the surfaces of the first limiting portion 1-1 and the second limiting portion 2-1. At this time, the rotating member 2 cannot rotate relative to the fixed member 1; the locking member 3 is moved to one side so that the third limiting portion 3-1 moves toward the first limiting portion 1-1, and the third limiting portion 3-1 is no longer in contact with the second limiting portion 2-1. At this time, the rotating member 2 can rotate relative to the fixed member 1, and the medical bed armrest is installed on the rotating member 2, so that the medical bed armrest can be rotated relative to the bed body, and the medical bed armrest can be raised and lowered.

[0035] like Figure 2-3 As shown, the first limiting part 1-1 and the second limiting part 2-1 are groove structures, and the third limiting part 3-1 is a corresponding convex structure. The third limiting part 3-1 can be embedded in the first limiting part 1-1 and the second limiting part 2-1. Since the fixing member 1 cannot rotate, the third limiting part 3-1 cannot rotate relative to the first limiting part 1-1. Even if a force is manually applied to the rotating member 2 at this time, the wall surface of the second limiting part 2-1 is pressed tightly on the third limiting part 3-1, and the rotating member 2 cannot rotate. Move the locking member 3 so that the third limiting part 3-1 moves toward the first limiting part 1-1, and the third limiting part 3-1 is disengaged from the second limiting part 2-1, and the rotating member 2 can rotate freely.

[0036] like Figure 5 As shown, the fixing member 1 includes a connecting portion 1-2 and a receiving portion 1-3 located on one side of the connecting portion 1-2, the receiving portion 1-3 has a first receiving cavity 1-4 for receiving the locking member 3, and the first receiving cavity 1-4 is recessed toward one side to form a first limiting portion 1-1;

[0037] like Figure 4 As shown, the rotating member 2 includes a rotating portion 2-2 and a mounting rod 2-3 located on the rotating portion 2-2, the rotating portion 2-2 has a second accommodating cavity 2-4 for accommodating the locking member 3, and the second accommodating cavity 2-4 is recessed toward one side to form a second limiting portion 2-1; a connecting block is provided on the rotating portion 2-2, a connecting plate is provided on the connecting block, and a mounting rod 2-3 is provided on the connecting plate;

[0038] In the first state, the mounting rod 2-3 is vertically arranged upward, the locking member 3 is located in the first accommodating cavity 1-4 and the second accommodating cavity 2-4, and the third limiting portion 3-1 is abutted against the first limiting portion 1-1 and the second limiting portion 2-1 to achieve locking, thereby preventing the medical bed armrest on the mounting rod 2-3 from rotating. When the medical bed armrest needs to be lowered, the locking member 3 is moved toward the side of the fixing member 1, so that the third limiting portion 3-1 releases the lock on the second limiting portion 2-1, causing the hinge mechanism to be in the second state, the third limiting portion 3-1 is located in the first accommodating cavity 1-4, and the rotating member 2 can rotate, so that the medical bed armrest flips downward.

[0039] Afterwards, if the medical bed armrest needs to be used, the rotating part 2 can be rotated to flip the medical bed armrest upward, and then the locking part 3 can be moved in the opposite direction to make the third limiting part 3-1 move into the first limiting part 1-1 and the second limiting part 2-1 to realize the locking function, so that the hinge mechanism is in the first state. At this time, the mounting rod 2-3 is arranged vertically upward, that is, the medical bed armrest is arranged upward.

[0040] like Figure 6 As shown, in order to facilitate the movement of the locking member 3, a hand-held portion 3-2 is provided at one end of the locking member 3, and the hand-held portion 3-2 is located outside the fixing member 1 to facilitate manual adjustment of the position of the locking member 3.

[0041] A blocking member 4 is provided at the other end of the locking member 3, and a third accommodating chamber 2-5 is provided at one end of the rotating member 2. An elastic return member 5 is provided between the blocking member 4 and the end surface of the third accommodating chamber 2-5. The elastic return member 5 is preferably a spring. In the first state, the spring is in a natural state; the locking member 3 is moved outward so that the third limiting portion 3-1 releases the lock on the second limiting portion 2-1. At this time, the spring is in a compressed state; thereafter, if the medical bed armrest needs to be used, the rotating member 2 can be rotated to flip the medical bed armrest upward. Then, under the action of the compressed state spring, the locking member 3 can automatically move in the opposite direction, so that the third limiting portion 3-1 moves into the first limiting portion 1-1 and the second limiting portion 2-1, thereby realizing the locking function.

[0042] Example 2

[0043] The difference between Example 2 and Example 1 is that the first limiting portion 1-1 and the second limiting portion 2-1 are convex structures, and the third limiting portion 3-1 is a corresponding concave structure. The first limiting portion 1-1 and the second limiting portion 2-1 can be embedded in the third limiting portion 3-1. Since the fixing member 1 cannot rotate, the third limiting portion 3-1 cannot rotate relative to the first limiting portion 1-1. Even if a force is manually applied to the rotating member 2 at this time, the wall surface of the second limiting portion 2-1 is pressed tightly against the third limiting portion 3-1, and the rotating member 2 cannot rotate. Move the locking member 3 so that the third limiting portion 3-1 moves toward the first limiting portion 1-1, the second limiting portion 2-1 is disengaged from the third limiting portion 3-1, and the rotating member 2 can rotate freely.

[0044] The above are only preferred embodiments of the present invention. The protection scope of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall also be regarded as the protection scope of the present invention.

Claims

1. A hinge mechanism for a medical bed armrest, characterized in that: include: The fixing member (1) has a first limiting portion (1-1); The rotating member (2) is rotatably engaged with the fixing member (1) and has a second limiting portion (2-1); The locking member (3) has a third limiting portion (3-1) and is capable of moving relative to the fixed member (1) and the rotating member (2), so that the hinge mechanism has a first state and a second state. In the first state, the third limiting portion (3-1) abuts against the first limiting portion (1-1) and the second limiting portion (2-1); in the second state, the third limiting portion (3-1) abuts against the first limiting portion (1-1), and the rotating member (2) is capable of rotating relative to the fixed member (1).

2. The hinge mechanism for the medical bed armrest according to claim 1, characterized in that: The first limiting portion (1-1) and the second limiting portion (2-1) are groove structures, and the third limiting portion (3-1) is a corresponding convex structure; or the first limiting portion (1-1) and the second limiting portion (2-1) are convex structures, and the third limiting portion (3-1) is a corresponding concave structure.

3. The hinge mechanism for the medical bed armrest according to claim 1, characterized in that: The fixing member (1) comprises a connecting portion (1-2) and a receiving portion (1-3) located on one side of the connecting portion (1-2); the receiving portion (1-3) has a first receiving cavity (1-4) for receiving the locking member (3); the first receiving cavity (1-4) is recessed toward one side to form a first limiting portion (1-1).

4. The hinge mechanism for the medical bed armrest according to claim 1, characterized in that: The rotating member (2) comprises a rotating portion (2-2) and a mounting rod (2-3) located on the rotating portion (2-2); the rotating portion (2-2) has a second accommodating cavity (2-4) for accommodating the locking member (3); the second accommodating cavity (2-4) is recessed toward one side to form a second limiting portion (2-1).

5. The hinge mechanism for the medical bed armrest according to claim 4, characterized in that: The rotating part (2-2) is provided with a connecting block, the connecting block is provided with a connecting plate, and the connecting plate is provided with a mounting rod (2-3).

6. The hinge mechanism for the medical bed armrest according to claim 4, characterized in that: In the first state, the mounting rod (2-3) is arranged vertically upward.

7. The hinge mechanism for the medical bed armrest according to claim 1, characterized in that: A hand-held portion (3-2) is provided at one end of the locking member (3).

8. The hinge mechanism for the medical bed armrest according to claim 1, characterized in that: A blocking member (4) is provided at one end of the locking member (3), a third accommodating cavity (2-5) is provided at one end of the rotating member (2), and an elastic reset member (5) is provided between the blocking member (4) and the end surface of the third accommodating cavity (2-5).

9. The hinge mechanism for the medical bed armrest according to claim 8, characterized in that: In the second state, the elastic return element (5) is in a compressed state.

10. The hinge mechanism for the medical bed armrest according to claim 8, characterized in that: The elastic reset element (5) is a spring.

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