An articulating folding stand

Abstract

This utility model discloses a hinged folding frame, including a left elongated shell, a right elongated shell, and a central locking / unlocking device. One end of the left elongated shell is hinged to one end of the right elongated shell. One end of the central locking / unlocking device is movably connected to the left elongated shell, and the other end is movably connected to the right elongated shell. When the left and right elongated shells are unfolded, they are locked by the central locking / unlocking device, preventing them from folding together. After the central locking / unlocking device is unlocked, the left and right elongated shells can be hinged and folded together. The hinged folding frame of this utility model has a robust structure, is convenient to unfold and fold, remains stable in the locked state, and offers smooth and easy folding operation with good support. The product is compact and suitable for the frame connection needs of various foldable medical devices, improving both ease of use and safety.

Description

Technical Field

[0001] This utility model relates to articulated folding components for medical devices, and more particularly to an articulated folding frame. Background Technology

[0002] 1. Chinese Patent Announcement No.: CN205181732U discloses a novel walking aid with a hard base pad, including a cross-folding frame and a frame connected to the left and right ends of the cross-folding frame. A seat pad is connected to the top of the folding frame. The seat pad includes a foldable hard base plate and a soft pad disposed above the hard base plate. A handle is provided in the middle of the hard base plate. The hard base plate is movably connected to the cross-folding frame.

[0003] The cross-folding frame used in the aforementioned new type of walking aid is an X-shaped folding frame, which is large in size, longitudinally arranged, occupies a lot of space, increases the weight of the product, and the cross-folding frame is relatively bulky.

[0004] 2. Chinese Patent Publication No. CN222488018U discloses a wheeled folding walking aid, including a folding frame, a handle, a front wheel, and left and right rear wheels. The folding frame includes left and right uprights, left and right upright sliding sleeves, a front wheel connecting rod assembly, and scissor folding mechanisms provided between the left upright, the left upright sliding sleeve and the right upright, the right upright sliding sleeve, the left upright, the left upright sliding sleeve and the front wheel connecting rod assembly, the right upright, the right upright sliding sleeve and the front wheel connecting rod assembly, the left upright, the left upright sliding sleeve and the left rear wheel, and the right upright, the right upright sliding sleeve and the right rear wheel. A locking mechanism is also provided between the left and right uprights and the left and right upright sliding sleeves.

[0005] The scissor folding mechanism used in the aforementioned wheeled folding walker is essentially an X-shaped folding frame. It is large in size, longitudinally arranged, occupies a lot of space, and increases the weight of the product. The scissor folding mechanism is also relatively bulky. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a hinged folding frame with a reasonable structural design, a sturdy structure, and convenient locking and unlocking.

[0007] The solution to the above technical problem is as follows:

[0008] A hinged folding frame includes a left elongated shell, a right elongated shell, and a central locking and unlocking device. One end of the left elongated shell is hinged to one end of the right elongated shell. One end of the central locking and unlocking device is movably connected to the left elongated shell, and the other end is movably connected to the right elongated shell. When the left and right elongated shells are unfolded, they are locked by the central locking and unlocking device, preventing them from folding together. After the central locking and unlocking device is unlocked, the left and right elongated shells can be hinged and folded together.

[0009] The central locking and unlocking device includes a support plate device and a locking device. One end of the support plate device is movably connected to the middle section of the left long shell piece, and the other end is positioned and movablely connected to the middle section of the right long shell piece. The locking device is connected to the right long shell piece. The locking device presses against the corresponding end of the support plate device to lock, so that the left and right long shell pieces cannot be folded together. The locking device is unlocked when it is disengaged from pressing against the support plate device. The support plate device can move and change position relative to the right long shell piece, so that the left and right long shell pieces can be hinged and folded together.

[0010] The advantages of this articulated folding frame are as follows: the articulated folding frame has a sturdy structure, is easy to unfold and fold, remains stable in the locked state, folds easily and smoothly, has good support, and is small in size. It is suitable for the skeleton connection needs of various foldable medical devices, improving the convenience and safety of product use. Attached Figure Description

[0011] Figures 1-4 This is a perspective view of the product of this utility model in its unfolded state, wherein Figure 1 It is in a locked state. Figure 4 It is unlocked;

[0012] Figure 5 This is an exploded view of the locking device of this utility model product;

[0013] Figure 6 , Figure 7 This is an exploded view of the product of this utility model;

[0014] Figure 8 , Figure 9 This is a perspective view of the product of this utility model in its folded state;

[0015] Figures 10-12 This is a perspective view of the articulated folding frame of this utility model applied to a three-wheeled walking aid in its unfolded state.

[0016] Figures 13-14 This is a perspective view of the articulated folding frame of this utility model applied to a three-wheeled walking aid in its folded state. The components include: left elongated shell 1, left groove 101, right elongated shell 3, central locking / unlocking device 2, support plate device 21, first screw 211, support plate assembly 212, second screw 213, locking device 22, locking groove 221, vertical elongated hole 222, third screw 223, torsion spring 224, locking top pressing component 225, vertical column 226, fourth screw 4, left free end connecting seat 5, fifth screw 51, right free end connecting seat 6, and sixth screw 61. Detailed Implementation

[0017] like Figures 1 to 14The image shows an articulated folding frame, used as a component in foldable medical devices, such as folding wheelchairs, folding tricycles, and folding walking aids. This application discloses an articulated folding frame for use in medical devices. The articulated folding frame is made of iron or stainless steel; it includes a left elongated shell 1, a right elongated shell 3, and a central locking / unlocking device 2. The left elongated shell 1 and right elongated shell 3 are integrally formed. One end of the left elongated shell 1 is hinged to one end of the right elongated shell 3. One end of the central locking / unlocking device 2 is movably connected to the left elongated shell 1, and the other end is movably connected to the right elongated shell 3, facilitating the necessary movement for folding the left and right elongated shells 1 and 3. After unfolding between the left and right elongated shells 1 and 3, it can be folded... The central locking and unlocking device 2 is manually operated to lock the left elongated shell 1 and the right elongated shell 3, thus preventing them from folding and fixing the medical device in its unfolded state. When the central locking and unlocking device 2 is unlocked, the left elongated shell 1 can be hinged and folded relative to the right elongated shell 3, or the right elongated shell 3 can be hinged and folded relative to the left elongated shell 1. Therefore, the left elongated shell 1 and the right elongated shell 3 can be hinged and folded, thereby allowing the medical device to be hinged and folded.

[0018] The hinged folding frame of this utility model has a robust structure, is easy to unfold and fold, remains stable in the locked state, and is easy and smooth to fold. It has good support and a small product size, and is suitable for the skeleton connection needs of various foldable medical devices, improving the convenience and safety of product use.

[0019] Preferably, the central locking and unlocking device 2 includes a support plate device 21 and a locking device 22. One end of the support plate device 21 is movably connected to the middle section of the left elongated shell 1, and the other end is positioned and movablely connected to the middle section of the right elongated shell 3. The locking device 22 is connected to the middle section of the right elongated shell 3. After the left elongated shell 1 and the right elongated shell 3 are unfolded, the locking device 22 presses against the corresponding end of the support plate device 21 to lock, so that the left elongated shell 1 and the right elongated shell 3 cannot be folded together and can be used normally. When the locking device 22 is disengaged and does not press against the support plate device 21, it is unlocked. The support plate device 21 can move and change position relative to the right elongated shell 3, so that the left elongated shell 1 and the right elongated shell 3 can be hinged and folded together. The above is a further refined structure of the central locking and unlocking device 2. This structure is easy to operate and convenient to lock and unlock.

[0020] Preferably, the support plate device 21 includes a first screw 211, a support plate assembly 212, and a second screw 213; the first screw 211 vertically passes through one end of the support plate assembly 212 and the inner section of the left elongated shell 1, so that one end of the support plate assembly 212 is movably connected to the left elongated shell 1, and the other end of the support plate assembly 212 is vertically fixedly connected to the second screw 213, forming the basic structure of the support plate device 21; the locking device 22 includes a locking groove 221, a vertical elongated hole 222, a third screw 223, a torsion spring 224, and a locking top pressing member 225; the second screw 213 passes through the vertical elongated hole 222 and can be vertically elongated. The position changes within the length range of the slot 222; a locking groove 221 is provided on the inner side wall of the right long strip shell 3, and a third screw 223 is vertically fixed to the locking groove 221. The third screw 223 is vertically inserted into the right long strip shell 3 for fixation. A torsion spring 224 is inserted into the third screw 223, and a locking top pressing member 225 is movably inserted into the third screw 223. The torsion spring 224 is clamped between the third screw 223 and the locking top pressing member 225, so that the locking top pressing member 225 forms an elastic reset through the torsion spring 224, and the locking top pressing member 225 forms an elastic pressing operation through the torsion spring 224; when the left long strip shell 1 and the right long strip shell 3 are unfolded into place, the second The screw 213 moves to the left end of the vertical elongated hole 222. The front end of the locking top pressing member 225 presses against the second screw 213. The locking top pressing member 225 automatically falls into the empty position at the front end of the second screw 213 by the elasticity of the torsion spring 224, locking and pressing against the second screw 213. The support plate assembly 212 supports and fixes the unfolded left elongated shell 1 and right elongated shell 3, so that the left elongated shell 1 and right elongated shell 3 cannot be hinged or folded. Pressing the tail of the locking top pressing member 225 causes the front end to lift up. When the locking top pressing member 225 is disengaged and no longer presses against the second screw 213, it is unlocked. Then, the left elongated shell 1 can be hinged and folded relative to the right elongated shell 3. Rod 213 moves to the right end of vertical elongated hole 222 as the left elongated shell 1 and / or right elongated shell 3 are hinged and folded. The hinged folding of the left elongated shell 1 and right elongated shell 3 is completed. The above structure is the specific structure of the central locking and unlocking device 2. Its structure is compact and reliable, and easy to operate. The locking top pressing part 225 automatically resets under the action of torsion spring 224 to ensure the stability of the locked state. The second screw 213 slides smoothly in the vertical elongated hole 222 and works with the support plate assembly 212 to achieve precise positioning and sliding anti-dislodgement during unfolding and folding. The overall structure layout is reasonable, the parts wear is small, the service life is long, and it is suitable for scenarios with frequent hinged folding and opening.

[0021] Preferably, the support plate assembly 212 consists of two long metal strips arranged vertically to balance the upper and lower support forces, ensure smooth sliding, provide strong support, and have a robust structure.

[0022] Preferably, a vertical post 226 is fixed in the locking groove 221 near the middle section of the locking top pressure member 225, which is used to connect the torsion spring 224 foot, enhance the torsional elasticity of the torsion spring 224, and facilitate the setting of the torsion spring 224 foot.

[0023] Preferably, a fourth screw 4 is vertically connected between the right end of the left elongated shell 1 and the left end of the right elongated shell 3, with the fourth screw 4 as the hinge base axis, so that the right end of the left elongated shell 1 and the left end of the right elongated shell 3 are hinged end to end; a suitable hinged connection structure is set to realize a stable rotational connection between the left elongated shell 1 and the right elongated shell 3.

[0024] Preferably, the left end of the left elongated shell 1 is hinged with a left free end connector 5 for connecting to the medical device body structure.

[0025] Preferably, the left end of the left elongated shell 1 and the left free end connecting seat 5 are vertically connected by a fifth screw 51. With the fifth screw 51 as the hinge base axis, after the left free end connecting seat 5 is fixedly connected to the medical device body structure, the left elongated shell 1 can be hinged and folded relative to the left free end connecting seat 5.

[0026] Preferably, the right end of the right elongated shell 3 is hinged with a right free end connector 6 for connecting to the medical device body structure.

[0027] Preferably, the right end of the right elongated shell 3 and the right free end connecting seat 6 are vertically connected by a sixth screw 61. With the sixth screw 61 as the hinge base axis, after the left free end connecting seat 5 is fixedly connected to the medical device body structure, the right elongated shell 3 can be hinged and folded relative to the right free end connecting seat 6.

[0028] Preferably, the inner wall of the left elongated shell 1 is provided with a left groove 101. The left groove 101 and the locking groove 221 on the inner wall of the right elongated shell 3 are arranged horizontally and symmetrically. After the left elongated shell 1 and the right elongated shell 3 are folded, the outer protruding part of the locking top pressing part 225 can be embedded in the left groove 101, further compressing the compactness of the folding, improving the structural stability in the folded state, effectively reducing the space occupied, and facilitating storage and transportation.

[0029] like Figures 10-14 As shown: A folding tricycle walking aid including an articulated folding frame. A folding tricycle including an articulated folding frame. A folding wheelchair including an articulated folding frame.

Claims

1. A hinged folding frame, characterized in that: It includes a left long shell, a right long shell, and a central locking and unlocking device. One end of the left long shell is hinged to one end of the right long shell. One end of the central locking and unlocking device is movably connected to the left long shell, and the other end is movably connected to the right long shell. When the left and right long shells are unfolded, they are locked by the central locking and unlocking device, and the left and right long shells cannot be folded together. After the central locking and unlocking device is unlocked, the left and right long shells can be hinged and folded together.

2. The hinged folding frame according to claim 1, characterized in that: The central locking and unlocking device includes a support plate device and a locking device. One end of the support plate device is movably connected to the middle section of the left long shell piece, and the other end is positioned and movablely connected to the middle section of the right long shell piece. The locking device is connected to the right long shell piece. The locking device presses against the corresponding end of the support plate device to lock it, so that the left long shell piece and the right long shell piece cannot be folded together. The locking device disengages from the support plate device to unlock it. The support plate device can move and change position relative to the right long shell piece, so that the left long shell piece and the right long shell piece can be hinged and folded.

3. The hinged folding frame according to claim 2, characterized in that: The support plate device includes a first screw, a support plate assembly, and a second screw. The first screw passes through one end of the support plate assembly and the inner section of the left elongated shell, so that one end of the support plate assembly is movably connected to the left elongated shell, and the other end of the support plate assembly is vertically fixedly connected to the second screw. The locking device includes a locking groove, a vertical elongated hole, a third screw, a torsion spring, and a locking top pressure member. The second screw passes through the vertical elongated hole and can move and change position within the length range of the vertical elongated hole. A locking groove is opened on the inner side wall of the right elongated shell, and the third screw is fixedly connected to the locking groove. The torsion spring passes through the third screw, and the locking top pressure member is movably connected to the third screw. The third screw and the locking... A torsion spring is clamped between the top pressing components, and the locking top pressing component is elastically reset through the torsion spring; when the left and right long shell components are unfolded into place, the second screw moves to the left end of the vertical long hole, and the front end of the locking top pressing component presses against the second screw. The support plate assembly supports and fixes the unfolded left and right long shell components, so that the left and right long shell components cannot be hinged or folded; when the locking top pressing component is released and does not press against the second screw, it is unlocked, and the left long shell component can be hinged and folded relative to the right long shell component. The second screw moves to the right end of the vertical long hole as the left and / or right long shell components are hinged and folded. The hinged folding of the left and right long shell components is completed.

4. A hinged folding frame according to claim 3, characterized in that: The support plate assembly consists of two long metal strips arranged vertically.

5. A hinged folding frame according to claim 3, characterized in that: A vertical post is fixed to the lock groove on the inner side of the middle section near the top of the lock buckle.

6. A hinged folding frame according to any one of claims 1 to 5, characterized in that: A fourth screw is vertically connected between the right end of the left elongated shell and the left end of the right elongated shell, with the fourth screw serving as the hinge base axis, so that the right end of the left elongated shell and the left end of the right elongated shell are hinged together end to end.

7. A hinged folding frame according to any one of claims 1 to 5, characterized in that: The left end of the left long shell is hinged to a left free end connector.

8. A hinged folding frame according to claim 7, characterized in that: The left end of the left long shell and the left free end connecting seat are vertically connected by a fifth screw. With the fifth screw as the hinge base axis, the left long shell can be hinged and folded relative to the left free end connecting seat.

9. A hinged folding frame according to any one of claims 1 to 5, characterized in that: The right end of the right long shell is hinged to a right free end connector.

10. A hinged folding frame according to claim 9, characterized in that: The right end of the right elongated shell and the right free end connecting seat are vertically connected by a sixth screw. With the sixth screw as the hinge base axis, the right elongated shell can be hinged and folded relative to the right free end connecting seat.

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