Releasable locking device and medical bed

Abstract

The utility model relates to a releasable locking device and a medical bed with the lock.The locking device comprises a fixing base, a rotating support, a rotating shaft, a locking component and a handle, the rotating support is rotationally connected with the fixing base through the rotating shaft, the first end of the locking component is rotationally connected with the fixing base, and the second end of the locking component is rotationally connected with the handle. The rotating support and the locking component are provided with locking structures which are matched with each other, one end of the rotating shaft penetrates through the locking component to be connected with the handle, the handle is provided with a cam structure, when the handle is located at the locking position, the cam structure presses the locking component on the rotating support, and when the handle is located at the locking position, the cam structure presses the locking component on the rotating support. And when the handle is in the release position, the locking part is separated from the rotating bracket. The locking device structure has the advantages of being simple in structure, convenient to operate and the like.

Description

Technical Field

[0001] This patent application relates to a locking device and a medical bed, and more particularly, to a releasable locking device and a medical bed. Background Art

[0002] Medical beds, especially those with footrests for supporting a patient's feet or legs, are heavy and long. They must not only rotate freely about a vertical axis but also be securely locked at the desired angle. Because the footrests require frequent operation, a releasable locking device that is easily accessible is required for ease of use. Utility Model Content

[0003] The purpose of this patent application is to provide a releasable locking device and a medical bed having the locking device.

[0004] In one embodiment of the releasable locking device described in the present patent application, it includes a fixed base, a rotating bracket, a rotating shaft, a locking component and a handle, the rotating bracket is rotatably connected to the fixed base via the rotating shaft, the first end of the locking component is rotatably connected to the fixed base, the rotating bracket and the locking component have mutually cooperating locking structures, one end of the rotating shaft passes through the locking component and is connected to the handle, the handle has a cam structure, when the handle is in the locked position, the cam structure presses the locking component onto the rotating bracket, and when the handle is in the released position, the locking component is disengaged from the rotating bracket.

[0005] In one embodiment of the releasable locking device according to the present patent application, the locking structure includes a first gear ring arranged on a plane of the rotating bracket perpendicular to the rotating shaft, and a second gear ring arranged at the second end of the locking component.

[0006] In an embodiment of the releasable locking device according to the present patent application, the first gear ring extends circumferentially by 360 degrees, and the second gear ring extends circumferentially by 180 degrees.

[0007] In one embodiment of the releasable locking device described in the present patent application, it further includes an elastic element, one end of which abuts against the fixed seat and the other end abuts against the locking component. When the handle is in the released position, the elastic element pushes the second end of the locking component away from the rotating bracket.

[0008] In one embodiment of the releasable locking device described in the present patent application, the fixing seat has an upper connecting portion and a lower connecting portion, a space for accommodating the rotating bracket is formed between the upper connecting portion and the lower connecting portion, and the rotating shaft passes through the upper connecting portion, the rotating bracket and the lower connecting portion in sequence from top to bottom.

[0009] In an embodiment of the releasable locking device according to the present patent application, a groove adapted to the lower connecting portion is formed on the locking component.

[0010] In one embodiment of the releasable locking device according to the present patent application, it further comprises a sleeve, which is sleeved on the rotating shaft, and a locking screw is provided on the rotating bracket, which abuts against the sleeve.

[0011] In one embodiment of the releasable locking device according to the present patent application, the cam structure includes an arc segment and a plane segment connected to each other, and when the handle is in the locked position, the plane segment presses the locking component onto the rotating bracket.

[0012] In one embodiment of the medical bed according to the present patent application, it includes a medical bed body, a supporting device and a locking device as described above, the fixing seat is installed on the medical bed body, and the supporting device is connected to the rotating bracket.

[0013] In one embodiment of the medical bed according to the present patent application, the support device is a foot support device.

[0014] The releasable locking device and medical bed implemented in this patent application have the following beneficial effects: the locking device structure of this application has the advantages of simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present patent application will be further described below with reference to the accompanying drawings and embodiments, in which:

[0016] Figure 1 It is a perspective partially cutaway schematic diagram of an embodiment of the releasable locking device of the present patent application;

[0017] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0018] Figure 3 yes Figure 1 A schematic cross-sectional view of the releasable locking device shown;

[0019] Figure 4 yes Figure 1 An exploded schematic diagram of the releasable locking device shown;

[0020] Figure 5 yes Figure 1 A schematic diagram of the handle of the releasable locking device shown in the locked position;

[0021] Figure 6 yes Figure 5 Enlarged view of middle part B;

[0022] Figure 7 yes Figure 1 A schematic diagram of the handle of the releasable locking device shown in the released position;

[0023] Figure 8 yes Figure 7 Enlarged view of middle C part;

[0024] Figure 9 yes Figure 1 A perspective view of a rotating bracket of the releasable locking device shown;

[0025] Figure 10 yes Figure 1 A perspective schematic diagram of a locking component of the releasable locking device shown;

[0026] Figure 11 yes Figure 1 A perspective schematic diagram of the rotating shaft of the releasable locking device is shown. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of this patent application, the specific implementation methods of this patent application are now described in detail with reference to the accompanying drawings.

[0028] The embodiments of the releasable locking device and the medical bed of the present patent application are described in detail below, and examples of these embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.

[0029] In the description of the releasable locking device of this patent application, it should be understood that the terms "front," "rear," "upper," "lower," "upper end," "lower end," "upper portion," "lower portion," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this patent application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting this patent application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] See Figures 1 to 11, is a schematic diagram of an embodiment of a releasable locking device of the present patent application. In this embodiment, the releasable locking device includes a fixed base 1, a rotating bracket 7, a rotating shaft 4, a locking component 10 and a handle 6. The rotating bracket 7 is rotatably connected to the fixed base 1 via the rotating shaft 4, the first end of the locking component 10 is rotatably connected to the fixed base 4, the rotating bracket 7 and the locking component 10 have mutually matched locking structures, one end of the rotating shaft 4 passes through the locking component 10 and is connected to the handle 6, and the rotating shaft 4 and the handle 6 are connected via the handle rotating shaft 16. The handle 6 has a cam structure 601, see Figure 5 and Figure 6 When the handle 6 is in the locked position, the cam structure 601 presses the locking component 10 against the rotating bracket 7 and self-locks. The rotating bracket 7 is locked on the fixed base 1 by the locking component 10. The rotating bracket 7 cannot rotate freely relative to the fixed base 1. Figure 7 and Figure 8 When the handle 6 is in the release position, the cam structure 601 no longer presses the locking component 10, and the locking component 10 can be disengaged from the rotating bracket 7 under the action of gravity or elastic elements. At this time, the rotating bracket 7 can rotate freely relative to the fixed base 1.

[0031] See Figure 2 The cam structure 601 of the handle 6 includes an arc segment 602 and a plane segment 603. The distance between the handle shaft 16 and the plane segment 603 is greater than the distance between the handle shaft 16 and the arc segment 602. When the handle 6 is in the locked position, the plane segment 603 of the cam structure 601 turns to the locking component 10 and presses the locking component 10 onto the rotating bracket 7. Since a sufficiently large force is required to rotate the handle 6 to disengage the plane segment 603 from the locking component 10, a self-locking effect can be achieved.

[0032] See Figure 4 The fixing base 1 has an upper connecting portion 101 and a lower connecting portion 102, and a space 103 for receiving the rotating bracket 7 is formed between the upper connecting portion 101 and the lower connecting portion 102. In some embodiments, in order to limit the rotation angle of the rotating bracket 7, the upper connecting portion 101 can extend a limit portion 104 to limit the rotation bracket 7. The limit portion 104 can also be set on the lower connecting portion 102. Both the upper connecting portion 101 and the lower connecting portion 102 are provided with a through hole for the rotation shaft 4 to pass through. The upper end of the through hole of the upper connecting portion 101 is formed with a step surface, see Figure 11 The upper end of the rotating shaft 4 is provided with an annular boss 401 that cooperates with the step surface. The rotating shaft 4 passes through the upper connecting part 101, the rotating bracket 7 and the lower connecting part 102 from top to bottom. In order to better fit, a washer 3 can be added between the annular boss 401 and the upper connecting part 101.

[0033] See Figure 9 and Figure 10In one embodiment of the releasable locking device according to the present patent application, the rotating bracket 7 and the locking component 10 have a mutually cooperating locking structure. This locking structure includes a first gear ring 701 disposed on a plane perpendicular to the rotating shaft 4 of the rotating bracket 7, and a second gear ring 1001 disposed on the second end of the locking component 10. Both the first gear ring 701 and the second gear ring 1001 are composed of multiple teeth protruding from the plane in which they are located. The first gear ring 701 can extend 360 degrees circumferentially, that is, the first gear ring 701 can be a complete gear ring. Of course, in some cases, it can be configured to extend less than 360 degrees depending on the required rotation angle. The second gear ring 1001 can extend 180 degrees circumferentially, that is, the second gear ring 1001 is a semicircular gear ring. Of course, in some cases, it can also be designed to extend less than 180 degrees or more than 180 degrees. In the locked state, the first gear ring 701 and the second gear ring 1001 are engaged with each other, so that the rotating bracket 7 cannot rotate relative to the fixed base 1. In the released state, the first gear ring 701 and the second gear ring 1001 are disengaged, and the rotating bracket 7 can rotate relative to the fixed base 1. Figure 9 One end of the rotating bracket 7 is provided with a connection structure connected to other components, such as the foot support device 15, and the connection structure is a number of reserved connection holes 702.

[0034] See Figures 2 to 4 as well as Figure 10 The first end of the locking component 10 is rotatably connected to the fixed base 1 via the locking component rotation axis 13. The second end of the locking component 10 is provided with a second ring gear 1001. The second end of the locking component 10 can rotate a certain angle about the locking component rotation axis 13, allowing the locking component 10 to switch between a locked state and a released state. The locking component 10 is formed with a groove that adapts to the lower connection portion 102 of the fixed base 1. In the locked state, the lower connection 102 is located within the groove of the locking component 10. To ensure that the second ring gear 10001 of the locking component 10 automatically disengages from the first ring gear 701 of the rotating bracket 7 in the released state, the locking component 10 also includes an elastic element 9. One end of the elastic element 9 abuts the fixed base 1 and the other end abuts the locking component 10. When the handle 6 is in the released position, the elastic element 9 pushes the second end of the locking component 10 away from the rotating bracket 7. The elastic element 9 can be a spring or other elastic component. In this embodiment, the lower connection 102 of the fixed base 1 is provided with a countersunk hole to accommodate the elastic element.

[0035] See Figures 1 to 4In one embodiment of the releasable locking device according to the present patent application, it further includes a sleeve 2, which is sleeved on the rotating shaft 4. A locking screw 5 is provided on the rotating bracket 7, and the locking screw 5 is pressed against the sleeve 2 to fix the rotating bracket 7 and the sleeve 2 together. An adjustment gasket 12 is also provided between the washer 3 and the upper end of the sleeve 2. The adjustment gasket 12 is used to adjust the upper and lower gaps, adjust the torque during the locking operation of the handle 6, and ensure that the handle 6 is in a self-locking state when locked. A self-lubricating upper gasket 8 is provided between the rotating bracket 7 and the upper connecting portion 101 of the fixed seat 1, a self-lubricating lower gasket 14 is provided between the rotating bracket 7 and the lower connecting portion 102 of the fixed seat 1, and a copper gasket 11 is provided between the locking component 10 and the cam structure 601 of the handle 6. The rotating shaft 4 passes through the washer 3, the adjusting washer 12, the sleeve 2, the upper connecting part 101, the self-lubricating upper washer 8, the rotating bracket 7, the self-lubricating lower washer 14, the lower connecting part 102, the locking part 10 and the copper washer 11 from top to bottom, and then is connected to the handle 6.

[0036] The releasable locking device in the above embodiment can be applied to various medical beds, especially medical beds with rotatable support devices. Figure 1 The fixing base 1 can be set on the medical bed body (not shown), and the rotating bracket 7 is fixedly connected to the foot support device 15. The releasable locking device can be used to conveniently lock the foot support device 15 in a desired position and quickly release the foot support device. The locking device structure of the present application has the advantages of simple structure and easy operation.

[0037] The embodiments of the present patent application are described above in conjunction with the accompanying drawings, but the present patent application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can make many forms based on the inspiration of this patent application without departing from the purpose of this patent application and the scope of protection of the claims, all of which are protected by this patent application.

Claims

1. A releasable locking device, characterized in that: The invention comprises a fixed base, a rotating bracket, a rotating shaft, a locking component and a handle, wherein the rotating bracket is rotatably connected to the fixed base via the rotating shaft, the first end of the locking component is rotatably connected to the fixed base, the rotating bracket and the locking component have mutually cooperating locking structures, one end of the rotating shaft passes through the locking component and is connected to the handle, and the handle has a cam structure, when the handle is in the locked position, the cam structure presses the locking component onto the rotating bracket, and when the handle is in the released position, the locking component is disengaged from the rotating bracket.

2. The releasable locking device according to claim 1, characterized in that The locking structure includes a first gear ring arranged on a plane of the rotating bracket that is perpendicular to the rotating shaft, and a second gear ring arranged at the second end of the locking component.

3. The releasable locking device according to claim 2, characterized in that The first gear ring extends 360 degrees in a circumferential direction, and the second gear ring extends 180 degrees in a circumferential direction.

4. The releasable locking device according to claim 1, characterized in that It also includes an elastic element, one end of which abuts against the fixing seat, and the other end abuts against the locking component. When the handle is in the released position, the elastic element pushes the second end of the locking component away from the rotating bracket.

5. The releasable locking device according to claim 4, characterized in that The fixing seat has an upper connecting portion and a lower connecting portion, a space for receiving the rotating bracket is formed between the upper connecting portion and the lower connecting portion, and the rotating shaft passes through the upper connecting portion, the rotating bracket and the lower connecting portion in sequence from top to bottom.

6. The releasable locking device according to claim 5, characterized in that A groove adapted to the lower connecting portion is formed on the locking component.

7. The releasable locking device according to claim 1, characterized in that It also includes a shaft sleeve, which is sleeved on the rotating shaft. A locking screw is provided on the rotating bracket, and the locking screw is against the shaft sleeve.

8. The releasable locking device according to claim 1, characterized in that The cam structure includes an arc segment and a plane segment connected to each other. When the handle is in the locking position, the plane segment presses the locking component onto the rotating bracket.

9. A medical bed, characterized in that: It comprises a medical bed body, a supporting device and a locking device as described in any one of claims 1 to 8, the fixing seat is installed on the medical bed body, and the supporting device is connected to the rotating bracket.

10. The medical bed according to claim 9, characterized in that: The supporting device is a foot supporting device.

Images