One-way clamping one-key loosening device

Abstract

The utility model relates to a one-way clamping one-key loosening device which comprises a support, and a ratchet wheel, a transmission gear, a pawl, a pin shaft and a release button are arranged on the support; the ratchet wheel and the transmission gear are coaxially arranged and rotate at the same time. The pawl is connected to the support through a pin shaft. The release button is used for controlling the pawl to rotate around the pin shaft so that the pawl can be away from or abut against the ratchet wheel. A guide rail is fixed to the support, two sliding assemblies moving relatively are arranged on the guide rail, each sliding assembly comprises a sliding block, a rack and a tension spring, the sliding blocks are arranged on the guide rail and connected with the racks, the racks are meshed with the transmission gears, and the racks are connected to the support through the tension springs. The sliding block is further provided with a medical clamping jaw. The clamping device has the advantages of being free in clamping distance adjustment, easy to operate, convenient to adjust, ingenious in device structural design, wide in application scene and the like.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a one-way clamping and one-button releasing device. Background Art

[0002] When patients visit the doctor, they often need to use a clamping device to help position the patient's limbs or body. Currently, there are two main solutions for manual clamping and loosening devices, as follows:

[0003] Solution 1: Use a conjugate rack and pinion assembly to achieve synchronized clamping and loosening of the left and right sliders. Manually rotate a knob connected to the gear to adjust the movement of the left and right sliders. To achieve the required clamping force, a manual clamping device is required to secure the left and right sliders. To release the clamping force, the operation is the opposite of that required to achieve the clamping force. The disadvantages of this solution are: It is not easy to operate. The manual clamping device must be operated simultaneously with the manual knob to ensure that the required clamping force is met. Furthermore, the contact clamping force cannot be released with a single click. Tightening the manual knob is slow and requires a certain amount of operator strength.

[0004] Option 2: Use a symmetrical crank slider mechanism to achieve synchronous clamping and loosening of the left and right sliders, while a torsion spring structure built into the center shaft achieves self-reset. Manually rotate a knob connected to the center shaft to adjust the movement of the left and right sliders. To achieve the required clamping force, a manual clamping device is required to secure the left and right sliders. Manually loosen the clamping device, which releases the clamping force required by the torsion spring structure on the center shaft. Disadvantages of this solution: Operation is not simple enough; the manual clamping device needs to be operated simultaneously with the manual knob to ensure that the clamping force requirement is met. Furthermore, the symmetrical crank slider mechanism takes up more space and requires higher machining precision at the connecting rod joint.

[0005] Therefore, designing a medical clamping device that is easy and quick to operate is an urgent problem to be solved. Utility Model Content

[0006] The purpose of this application is to design a one-way clamping and one-button releasing device that is easy and quick to operate.

[0007] A one-way clamping and one-button releasing device, comprising:

[0008] The bracket, as the main body;

[0009] The bracket is provided with a ratchet, a transmission gear, a pawl, a pin, and a release button; the ratchet and the transmission gear are coaxially arranged and rotate simultaneously; the pawl is connected to the bracket via a pin; the release button is used to control the pawl to rotate around the pin, so that the pawl moves away from or abuts against the ratchet;

[0010] A guide rail is fixed on the bracket, and two sliding components that move relative to each other are provided on the guide rail. The sliding components include a slider, a rack and a tension spring. The slider is set on the guide rail and connected to the rack. The rack is engaged with the transmission gear, and the rack is connected to the bracket through a tension spring; a medical clamp is also provided on the slider.

[0011] More specifically, the tension spring is connected to the bracket via a tension spring fixing seat, one end of the tension spring is connected to the rack, and the other end of the tension spring is connected to the tension spring fixing seat.

[0012] More specifically, a tension spring hinge pin is provided on the tension spring fixing seat, one end of the tension spring is connected to the rack, and the other end of the tension spring passes around the tension spring hinge pin and is connected to the tension spring fixing seat, and the tension spring portion is parallel to the rack.

[0013] More specifically, a rolling shaft ring is nested on the tension spring hinge pin.

[0014] To be more specific, the bracket includes a bearing seat, and the ratchet, transmission gear, pawl, pin shaft and release button are all arranged on the bearing seat. A through hole is opened on the bearing seat, and an unlocking push rod is provided on the through hole. One end of the unlocking push rod is connected to the release button, and the other end of the unlocking push rod is connected to the pawl. A compression spring is nested on the unlocking push rod.

[0015] More specifically, the other end of the unlocking push rod is connected to the pawl through a pawl hinge pin.

[0016] More specifically, the slider is connected to the rack via a rack connector.

[0017] More specifically, stoppers are provided at both ends of the guide rail.

[0018] More specifically, the medical clamp is a flexible clamp structure.

[0019] More specifically, the medical clamping jaws are provided with a soft rubber pad outer sheath.

[0020] More specifically, the transmission gear is arranged on a side close to the guide rail, and the ratchet is arranged on a side away from the guide rail.

[0021] More specifically, the rotation axis of the transmission gear corresponds to the center position of the guide rail.

[0022] More specifically, the bearing seat is arranged between the bracket and the guide rail.

[0023] More specifically, the length of the rack is greater than 1 / 2 the length of the guide rail.

[0024] The beneficial effects of this application are:

[0025] The one-way clamping and one-touch release device designed in this application offers convenient adjustment, simple operation, and an ingenious structural design. The user can adjust the distance between the two medical clamping jaws by moving a slider, and release the clamp with a single click by pressing a release button. The device's flexible clamping distance allows for clamping of patients of varying body shapes and body parts, paving the way for a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the one-way clamping and one-button release device in this application;

[0027] Figure 2 It is a partial schematic diagram of the clamping device in this application;

[0028] Figure 3 It is a schematic diagram of the meshing of the rack and the transmission gear in this application;

[0029] Figure 4 It is a partial schematic diagram of the bearing seat area in this application;

[0030] Figure 5 is a schematic diagram of the tension spring assembly in this application;

[0031] Figure 6 It is an exploded schematic diagram of the bearing seat in this application.

[0032] In the figure: 101, first slider; 102, second slider; 103, rack connector; 104, rack; 105, tension spring; 106, tension spring fixing seat; 107, first fixing screw; 108, tension spring hinge pin; 109, rolling shaft ring; 110, second fixing screw; 200, guide rail; 300, bearing seat; 301, transmission gear; 302, ratchet; 303, pawl; 310, release button; 311, compression spring; 312, unlocking push rod; 313, washer; 314, pawl hinge pin; 315, shaft retaining ring. DETAILED DESCRIPTION

[0033] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] like Figure 1 As shown, this application designs a one-way clamping and one-touch release device for assisting in positioning a patient's limbs or body. The device has long medical clamping jaws, which can be made of a relatively flexible material to effectively locate the body contour and help patients determine their standing position during medical imaging. The ends of the clamping jaws can be provided with a protective sheath made of silicone pads, cloth pads, or other medical materials.

[0037] like Figure 2 As shown, the clamping device designed in this application includes a bottom bracket, which serves as the main structure and is provided with a plurality of mounting holes. The mounting holes enable the clamping device to be mounted and fixed on other structures such as a wall, a lifting platform, a medical platform, etc. A bearing seat 300 is mounted on the bracket, and a ratchet 302 and a transmission gear 301 are provided on the bearing seat 300. Figure 4 As shown, the ratchet 302 and the transmission gear 301 are coaxially arranged and rotate simultaneously. The bearing seat 300 is also provided with a pawl 303 and a release button 310. The pawl 303 is fixed to the bearing seat 300 by a pin, and the pawl 303 can rotate around the pin. The release button 310 can make the pawl 303 move away from or abut against the ratchet 302. Specifically, as in the case of an explosion Figure 6As shown, the bearing housing 300 has a through hole, on which an unlocking push rod 312 is mounted. One end of the unlocking push rod 312 is connected to the release button 310, and a compression spring 311 is nested within the unlocking push rod 312. The distal end of the unlocking push rod 312 is connected to a pawl hinge pin 314 via a washer 313. The distal end of the pawl hinge pin 314 is also provided with a shaft retaining ring 315. The pawl 303 has a through hole, through which the pawl hinge pin 314 passes. When the release button 310 is pressed, the release button 310 pushes the unlocking push rod 312 forward and backward. This pushes the push rod 312, which in turn drives the pawl hinge pin 314, which in turn moves the pawl 303, freeing it from contact with the ratchet 302. When the release button 310 is released, the pawl 303 contacts the ratchet 302, limiting its rotation to one direction.

[0038] A guide rail 200 is also fixed to the bracket, and two sliding components that move relative to each other are provided on the guide rail 200. The sliding components include a slider, a rack 104 and a tension spring 105. The slider is set on the guide rail 200 and connected to the rack 104. The rack 104 is engaged with the transmission gear 301. The meshing directions of the racks of the two relatively moving sliding components and the transmission gear 301 are opposite. The rack 104 is connected to the bracket through the tension spring 105.

[0039] In some specific embodiments, a first slider 101 is provided at one end of the guide rail 200 and a second slider 102 is provided at the other end. Stoppers are provided at both ends of the guide rail 200 to prevent the sliders from sliding out and falling off. The first slider 101 and the second slider 102 move relative to each other, and medical clamps are installed on the sliders. When the user pushes the medical clamps, the clamps slide on the guide rail 200. The sliders are connected to the rack 104 through a connecting piece, and the rack 104 is connected to the bottom bracket through a tension spring assembly. Specifically, as Figure 5 As shown, a first fixing screw 107 is provided on the rack 104. The rack is connected to the tension spring 105 through the first fixing screw 107. When the rack 104 moves, it will pull the spring inside the tension spring 105. The other end of the tension spring 105 is fixed on the second fixing screw 110. The tension spring 105 is wrapped around the rolling shaft ring 109 to form an L shape. The rolling shaft ring 109 is nested on the tension spring hinge pin 108. When the tension spring 105 is stretched, it can ensure that a part of it is always parallel to the rack 104. The pulling direction of the tension spring 105 is parallel to the direction of the rack 104. The tension spring hinge pin 108 and the second fixing screw 110 are both set on the tension spring fixing seat 106, and the tension spring fixing seat 106 is fixed to the bottom bracket. Figure 3 As shown, the gear directions of the two racks 104 are set relative to each other, and the two racks 104 move relative to each other. Figure 3For example, when the two racks 104 approach each other, the transmission gear 301 rotates counterclockwise, and when the two racks 104 move away from each other, the transmission gear 301 rotates clockwise. When the transmission gear 301 rotates, the ratchet 302 also rotates together, and the support effect of the pawl 303 can prevent the tension spring 105 from pulling the rack 104 back.

[0040] In some embodiments, the length of the guide rail 200 can be adjusted to accommodate different body shapes and body parts, depending on the usage scenario. The two racks 104 are of the same length, ensuring that the clamping positions of the two medical jaws are symmetrical along the center of the device, avoiding offset or tilted clamping areas. Furthermore, the length of the rack 104 should preferably be greater than half the length of the guide rail 200, allowing the two medical jaws to be brought as close together as possible in special circumstances.

[0041] The working principle and process of this application:

[0042] When clamping is required, the user moves the first and second sliders 101, 102 on the guide rail 200 closer together. The sliders drive the rack 104, which is equipped with a transmission gear 301. The transmission gear 301 drives the ratchet 302 below. The ratchet 302 is held against the pawl 303, preventing it from rotating. By controlling the distance between the sliders, the distance between the medical jaws is controlled, ensuring that the jaws meet the clamping requirements.

[0043] When the distance between the medical jaws needs to be loosened, the user presses the release button 310, which moves the pawl 303 away from the ratchet 302, and the tension spring 105 pulls the two racks 104 away from each other, thereby loosening the two medical jaws.

[0044] The clamping device designed in this application can change the clamping direction of the device by adjusting the meshing direction of the ratchet 302 and the pawl 303, as well as adjusting the initial state of the tension spring. It can be adjusted from clamping inward with one button and loosening outside to clamping outward with one button and loosening inside.

[0045] The above describes the embodiments of the present invention in detail, but the present invention is not limited to the described embodiments. It is clear to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A one-way clamping and one-button releasing device, characterized in that: include: The bracket, as the main body; The bracket is provided with a ratchet, a transmission gear, a pawl, a pin, and a release button; the ratchet and the transmission gear are coaxially arranged and rotate simultaneously; the pawl is connected to the bracket via a pin; the release button is used to control the pawl to rotate around the pin, so that the pawl moves away from or abuts against the ratchet; A guide rail is fixed on the bracket, and two sliding components that move relative to each other are provided on the guide rail. The sliding components include a slider, a rack and a tension spring. The slider is set on the guide rail and connected to the rack. The rack is engaged with the transmission gear, and the rack is connected to the bracket through a tension spring; a medical clamp is also provided on the slider.

2. The one-way clamping and one-button releasing device according to claim 1, characterized in that: The tension spring is connected to the bracket through a tension spring fixing seat, one end of the tension spring is connected to the rack, and the other end of the tension spring is connected to the tension spring fixing seat.

3. The one-way clamping and one-button releasing device according to claim 2, characterized in that: A tension spring hinge pin is provided on the tension spring fixing seat, one end of the tension spring is connected to the rack, and the other end of the tension spring passes around the tension spring hinge pin and is connected to the tension spring fixing seat, and the tension spring portion is parallel to the rack.

4. The one-way clamping and one-button releasing device according to claim 3, characterized in that: A rolling shaft ring is nested on the tension spring hinge pin.

5. The one-way clamping and one-button releasing device according to claim 1, characterized in that: The bracket includes a bearing seat, and the ratchet, transmission gear, pawl, pin and release button are all arranged on the bearing seat. A through hole is opened on the bearing seat, and an unlocking push rod is provided on the through hole. One end of the unlocking push rod is connected to the release button, and the other end of the unlocking push rod is connected to the pawl. A compression spring is nested on the unlocking push rod.

6. The one-way clamping and one-button releasing device according to claim 5, characterized in that: The other end of the unlocking push rod is connected to the pawl through a pawl hinge pin.

7. The one-way clamping and one-button releasing device according to claim 1, characterized in that: The slider is connected to the rack through a rack connecting piece.

8. The one-way clamping and one-button releasing device according to claim 1, characterized in that: Stop blocks are provided at both ends of the guide rail.

9. The one-way clamping and one-button releasing device according to claim 1, characterized in that: The medical clamping jaw is a flexible clamping jaw structure.

10. The one-way clamping and one-button releasing device according to claim 1, characterized in that: The medical clamping jaws are provided with a soft rubber pad outer sheath.

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