An automatic braking and lowering protector with anti-panic function

Abstract

The present invention relates to the technical field of descenders, and particularly relates to an automatic braking descender with a panic prevention function, which includes a protector main body. A padlock part cooperating with a padlock is provided at the lower part of the main body. A rope clamping assembly is arranged inside the main body, and a rope passes through the rope clamping assembly. A handle is rotatably installed on the outer side of the main body, and the handle is connected to the rope clamping assembly. When the handle is in the initial rotation range and the final rotation range, the rope is clamped and locked by the rope clamping assembly. This device can quickly lock the rope when the user is frightened and grabs the handle randomly, so that the person stops descending and avoids danger; it also has a design of loading the rope without unlocking and the overall structure is small and has a clever design.

Description

Technical Field

[0001] The present invention relates to the technical field of descenders, and in particular to an automatic stopping descending protector with an anti-panic function. Background Art

[0002] At present, traditional steel hoist hook descenders, figure eight ring descenders, porous descenders, etc. need to be knotted and then climb out the window to escape, which wastes precious time for escape and self-rescue. During the descent process, traditional descenders need to hold the free rope end by hand to apply pressure to control the descent speed. This method not only makes the user easily tired, but there is even the possibility of falling if the operation is improper. In addition, the user is large in size and can only use large-diameter ropes, which is inconvenient to carry. Summary of the Invention

[0003] In order to solve the technical problems in the prior art such as high probability of falling caused by improper operation, the present invention provides an automatic stop descent protector with an anti-panic function.

[0004] The technical solution of the present invention is:

[0005] The present invention provides an automatic braking descent protector with an anti-panic function, which includes a protector body, a padlock portion for cooperating with a padlock is provided at the lower part of the body, a rope clamping assembly is provided inside the body, a rope passes through the rope clamping assembly, a handle is rotatably installed on the outer side of the body, the handle is connected to the rope clamping assembly, and when the handle rotates from an initial position to a final position, the handle includes a first rotation range A, a middle rotation range B and a final rotation range C which are connected end to end in sequence. When the handle is rotated to the middle rotation range, the friction force of the rope clamping assembly on the rope can be adjusted. When the handle is located in the first rotation range and the final rotation range, the rope is clamped and locked by the rope clamping assembly.

[0006] Furthermore, the rope clamping assembly includes a central rotating shaft installed inside the main body, a cam installed on the central rotating shaft, a rotation spring installed between the cam and the central rotating shaft, an extrusion protrusion facing the lower guide part of the cam, an extrusion surface cooperating with the extrusion protrusion inside the main body, the handle rotating shaft of the handle is not coaxial with the central rotating shaft, the rope passes through the gap between the extrusion protrusion and the extrusion surface, a rotating force component is provided on the cam, and a contact pushing component cooperating with the rotating force component is provided on the handle. When the handle is rotated to the middle rotation range, the contact pushing component contacts the rotating force component and gives the rotating force component a thrust to drive the cam to rotate, and the distance between the extrusion protrusion and the extrusion surface gradually increases with the rotation of the cam. When the handle is rotated to the end rotation range, the contact pushing component and the rotating force component are automatically separated, and the rotation spring causes the cam to rotate and reset, and the dynamic friction between the rope and the cam is converted into static friction. Under the action of this force, the rope is clamped and locked by the extrusion protrusion and the extrusion surface again.

[0007] Further, an upper guiding part is provided at the upper part of the main body, a lower guiding part is provided at the lower part of the main body, an extrusion protrusion is provided, an extrusion surface matched with the extrusion protrusion is arranged inside the main body, and after the rope enters the main body from the upper guiding part and bypasses the cam, it can pass out from the lower guiding part.

[0008] Further, a first anti-slip part is arranged at the position where the cam corresponds to the bypass of the rope, and the rope is attached to the first anti-slip part.

[0009] Further, the rotation force receiving assembly includes a roller rotating shaft installed on the cam and not coaxial with the central rotating shaft. An arc-shaped through groove is opened in the outer shell of the main body corresponding to the roller rotating shaft. The roller rotating shaft penetrates through the arc-shaped through groove. When the cam rotates, the roller rotating shaft moves along an arc-shaped track in the arc-shaped through groove, and a roller is installed on the roller rotating shaft; the contact type pushing assembly includes a roller pushing block rotatably installed on the handle through a second rotating shaft, a second torsion spring is installed on the second rotating shaft of the handle, a limiting block integrally formed with the handle is arranged on the side of the roller pushing block away from the roller, and a first torsion spring is installed on the handle rotating shaft of the handle.

[0010] Further, the padlock part includes a hollow shaft, the hollow shaft passes through the lower part of the side plate and is fixedly connected with the side plate, the hollow shaft also passes through the lower part of the cover plate and is rotatably connected with the cover plate, a jack is opened in the upper part of the cover plate, an elastic plug assembly is installed at the position corresponding to the jack on the upper part of the side plate, and when the plug of the elastic plug assembly is inserted into the jack, the cover plate is locked, and at this time, the cover plate cannot rotate around the hollow shaft and is in a closed state. When the plug is pressed to separate from the jack, the cover plate can rotate around the hollow shaft to an open state.

[0011] Further, the lower guiding part and the central axis of the padlock part are of an integral structure. The lower guiding part is provided with a first guiding groove for the rope to pass through. The upper guiding part is a column body, and the column body is fixedly connected with the inner side of the side plate. A pin hole is opened in the middle of one end of the column body facing the cover plate. The elastic plug assembly includes a plug installed in the pin hole and a return spring connecting the plug and the inner end of the pin hole. A second guiding groove is opened on the side of the column body, and the rope can enter the main body from the second guiding groove, bypass the cam, pass through the first guiding groove and then extend out of the main body.

[0012] Further, an arc-shaped groove is opened at the position of the first anti-slip part of the cam. When the rope bypasses the cam, it is stuck in the arc-shaped groove, and a plurality of transverse anti-slip grooves are opened at the position of the cam facing the first guiding groove.

[0013] Further, the surface of the roller pushing block in contact with the roller is a curved surface.

[0014] Furthermore, the angle corresponding to the first rotation range A is 0° to 25°, the angle corresponding to the last rotation range C is 70° to 75°, and the middle rotation range B is located between the first rotation range and the last rotation range C.

[0015] The beneficial effects achieved by the present invention are:

[0016] The present invention has a cam self-locking mechanism to achieve a hands-off braking function. Even if the user accidentally releases the handle, the friction force of the rope on the cam and the elastic force of the cam's return spring will automatically reset the cam to its initial position, thereby automatically clamping and locking the rope. It also has an anti-panic function. If the user panics due to being frightened during the descent, most users will try their best to hold on to everything around them. No matter which direction the user applies excessive force to the handle, the handle will not stay within the middle rotation range B. When the user is frightened and grabs the handle randomly, the device can quickly lock the rope, stopping the user from descending and avoiding danger. It also has a rope installation design that does not require unlocking and the overall structure is compact, with an ingenious design. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention.

[0019] Figure 3 This is a front view of the handle of the present invention in the initial position A of the first rotation range.

[0020] Figure 4 This is a diagram showing the handle of the present invention in the initial position of the first rotation range A with the cover removed from the back.

[0021] Figure 5 This is a front view of the handle of the present invention in use, when it is located at the end of the first rotation range A.

[0022] Figure 6 This is a front view of the handle of the present invention in the middle rotation range B.

[0023] Figure 7 This is a diagram showing the handle of the present invention being in use with the cover removed from the back, within the middle rotation range B.

[0024] Figure 8 This is a front view of the handle of the present invention in use, with the handle located at the end position of the middle rotation range B.

[0025] Figure 9 This is a diagram of the handle of the present invention being in use with the cover removed and the handle located at the end position of the middle rotation range B.

[0026] Fig.10 This is a diagram showing the use state of the handle of the present invention when it is located within the final rotation range C and the cam rotates back to the initial position.

[0027] Figure 11 This is a diagram showing the handle of the present invention being in the final rotation range C and the cam rotating back to the initial position with the cover removed.

[0028] Fig.12 This is the state diagram of the handle reverse roller push block rebound in use of the present invention.

[0029] Figure 13 This is the three-dimensional schematic diagram of the internal structure of the reverse side of the present invention without the cover. Detailed implementation manners

[0030] To facilitate the understanding of the present invention by those skilled in the art, the following describes the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] It should be noted that when a component is referred to as being "mounted on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0035] Such as Figures 1 to 13As shown in the figure, the present invention provides an automatic braking and descending protector with an anti-panic function, which includes a protector main body 1. A padlock part cooperating with a padlock is provided at the lower part of the main body 1. The outer shell of the main body 1 is composed of a side plate 101 and a cover plate 102. The outer shell is in the shape of a crescent with non-pointed upper and lower ends. A central rotating shaft 2 is installed inside the main body. A cam 3 is installed on the central rotating shaft 2. A return spring is installed between the cam 3 and the central rotating shaft. An upper guiding part 4 is provided at the upper part of the main body, and a lower guiding part 5 is provided at the lower part of the main body. A rope 22 enters the main body from the upper guiding part and can pass out of the main body from the lower guiding part after bypassing the cam. The upper guiding part 4 and the lower guiding part 5 guide the position where the rope enters and exits the main body, ensuring that the device maintains a nearly vertical state during use. An extrusion protrusion 6 is provided on the cam facing the lower guiding part, and an extrusion surface 7 cooperating with the extrusion protrusion is provided on the side of the lower guiding part facing the cam. When the cam rotates, the distance between the extrusion protrusion and the extrusion surface changes accordingly. A first anti-slip part 8 is provided on the cam corresponding to the place where the rope bypasses, and the rope fits with the first anti-slip part. A handle 9 is rotatably installed on the outer side of the main body 1. The handle rotating shaft of the handle 9 is not coaxial with the central rotating shaft. A roller rotating shaft 10 not coaxial with the central rotating shaft is installed on the cam. An arc-shaped through groove 11 is opened on the outer shell of the main body corresponding to the roller rotating shaft. The roller rotating shaft penetrates through the arc-shaped through groove 11. When the cam rotates, the roller rotating shaft moves along an arc-shaped trajectory in the arc-shaped through groove. A roller 12 is installed on the roller rotating shaft. A first torsion spring is installed on the handle rotating shaft of the handle. A roller push block 13 is rotatably installed on the handle through a second rotating shaft. A second torsion spring is installed on the second rotating shaft on the handle. A limiting block integrally formed with the handle is provided on the side of the roller push block away from the roller. The handle is initially located at the starting point of the first rotation range A. When the handle rotates clockwise, the roller push block is driven to rotate synchronously through the limiting block. In the first rotation range A, the roller push block does not contact the roller. At this time, the distance D between the extrusion protrusion of the cam and the extrusion surface remains at the minimum distance. The extrusion protrusion and the extrusion surface squeeze the rope. At this time, the friction force of the rope on the cam and the elastic force of the return spring give the cam a combined torque M. The greater the gravity of the person, the greater the combined torque M, which causes the extrusion protrusion and the extrusion surface to squeeze the rope tighter, thereby clamping the rope and preventing loosening.

[0036] As Figure 3 shown, before use, under the action of the first torsion spring, the handle automatically stays in the initial position. When in use, a force is applied to the handle to pull the handle. When the handle rotates from the initial position (as Figure 3 shown) to the end position, it has a first rotation range A, a middle rotation range B, and a last rotation range C. When the handle rotates in the first rotation range A, the roller push block starts to contact the roller at the end position of the first rotation range A (as Figure 5 shown), and then the handle enters the middle rotation range B. Continuing to apply a rotational force to the handle, the force received by the handle is transmitted to the roller through the roller push block within the middle range. The thrust received by the roller is transmitted to the cam through the roller rotating shaft, giving the cam a torque N opposite to the direction of the combined torque (as Figure 7As shown in the figure), when N is greater than M, the cam starts to rotate, and the distance D between the squeezing protrusion and the squeezing surface of the cam starts to increase from the minimum. When the thrust continues to increase, the force of squeezing the rope between the squeezing protrusion and the squeezing surface decreases, and the friction between the device and the rope decreases. The user and the device begin to descend along the rope and continue to pull the handle. When the handle rotates to the critical point between the middle rotation range B and the end rotation range C (as shown in the figure), the user starts to descend along the rope and continues ... Figure 8 As shown in the figure, the thrust of the roller push block to the roller reaches the maximum value. Since the rotation center axis of the handle and the cam do not coincide, the roller push block will slowly move away from the roller if the handle is turned further. When the handle rotation angle exceeds the critical point between the middle rotation range B and the end rotation range C, the roller push block is disengaged from the roller. The torque N generated by the handle rotation on the cam instantly becomes zero. The combined torque M of the friction force of the rope on the cam and the elastic force of the return spring on the cam causes the cam to quickly return to its initial position (as shown in the figure). Figure 11 As shown in FIG, the rope is again clamped by the extrusion protrusion and the extrusion surface, and the device and the rope are locked, stopping the descent. When the handle is within the final rotation range C, the device automatically locks with the rope. During the rotation of the handle from the initial position to the final position, the friction between the device and the rope, and thus the descent speed of the occupant, can only be adjusted when the handle is within the middle rotation range B. When the handle is within the initial rotation range A, the middle rotation range B, and the final rotation range C, the device and the rope are all locked, preventing the occupant from making operational errors due to panic during descent. If an operational error occurs and the occupant descends too quickly, they may be frightened and grasp at anything nearby, most likely clinging to the handle. At this time, no matter which direction the occupant applies excessive force to the handle, the handle will not remain within the middle rotation range B. Therefore, when the occupant frightens and grasps the handle, the device can quickly switch to a locked state with the rope, stopping the descent and avoiding danger.

[0037] like Fig.10 and 12 As shown, when the handle is rotated to the final rotation range C, if you want to continue using it, you need to reverse the handle to the initial position. Just release the handle. Under the action of the first torsion spring, the handle will reverse to the initial position. When the handle is reversed, the roller push block contacts the roller and is subjected to the reaction force of the roller. There is no limiting structure on the handle to restrict the roller push block in this direction. The roller push block rotates around the second rotating axis and passes over the roller, and then returns to the state of contact with the limit block under the action of the second torsion spring.

[0038] like Figure 13As shown in the figure, the padlock part includes a hollow shaft 14. The padlock can be connected to this device by hanging it in the hollow position of the hollow shaft. The hollow shaft 14 passes through the lower part of the side plate and is fixedly connected to the side plate. The hollow shaft 14 also passes through the lower part of the cover plate and is rotatably connected to the cover plate. A jack is opened in the upper part of the cover plate, and an elastic latch assembly is installed at the position corresponding to the jack on the upper part of the side plate. When the latch of the elastic latch assembly is inserted into the jack, the cover plate is locked. At this time, the cover plate cannot rotate around the hollow shaft. When the latch is pressed to disengage from the jack, the cover plate can rotate around the hollow shaft to the open state. At this time, after the rope is installed inside this device, the cover plate is closed. There is no need for the end of the rope to pass through the upper guide part, bypass the cam, and then pass out from the lower guide part. The rope installation is convenient, and the function of installing the rope can be realized without removing the padlock. When installing the rope, the continuous connection state between the padlock and this device can be maintained, which can avoid the loss of this device due to other reasons during operation.

[0039] As Figure 13 shown in the figure, the lower guide part and the central axis of the padlock part are an integral structure. The lower guide part is provided with a first guide groove 17 for the rope to pass through. The upper guide part is a cylinder 15, and the cylinder is fixedly connected to the inner side of the side plate. A pin hole is opened in the middle of the end of the cylinder facing the cover plate. The elastic latch assembly includes a latch 18 installed in the pin hole and a return spring connecting the latch and the inner end of the pin hole. After the latch is pressed, the latch can be retracted into the pin hole. After stopping pressing the latch, under the action of the return spring, the latch pops out and resets outward. A second guide groove 19 is opened on the side of the cylinder, and the rope can pass through the second guide groove into the main body, bypass the cam, and then pass through the first guide groove and extend out of the main body.

[0040] As Figure 13 shown in the figure, an arc-shaped groove is opened at the position of the first anti-slip part of the cam. When the rope bypasses the cam, it is stuck in the arc-shaped groove, which can improve the installation stability of the rope. A plurality of transverse anti-slip grooves 16 are opened at the position of the cam facing the first guide groove. When the extrusion protrusion of the cam extrudes the rope, the anti-slip grooves press the rope tightly, which can increase the friction between the cam and the rope.

[0041] As Figure 5 shown in the figure, the surface of the roller push block in contact with the roller is designed with a curved surface 21, which can ensure that the force during the process of the roller push block pushing the roller changes linearly, avoid damaging the roller, and the roller push block and the roller can be separated more smoothly after the force on the roller reaches the maximum value and then continue to rotate the handle.

[0042] The angle corresponding to the total rotation range of the handle is 0° to 75°. The total rotation range of the handle includes a first rotation range A, a middle rotation range B, and a last rotation range C in sequence. The angle corresponding to the first rotation range A is 0° to 25°, and the angle corresponding to the last rotation range C is 70° to 75°. The middle rotation range B is located between the first rotation range and the last rotation range C. The angle corresponding to the first rotation range A should not be too small. Such a design can prevent the user from quickly entering the middle rotation range B at the beginning stage of pulling the handle and dropping, giving the user a larger angle range to adapt to the feel of pulling the handle.

[0043] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An automatic braking and lowering protector with a panic prevention function, characterized in that: The protector comprises a main body, a padlock portion for cooperating with a padlock is provided at the lower portion of the main body, a rope clamping assembly is provided inside the main body, a rope passes through the rope clamping assembly, a handle is rotatably installed on the outer side of the main body, the handle is connected to the rope clamping assembly, and the handle includes an initial rotation range A, a middle rotation range B, and a final rotation range C connected end to end when the handle rotates from an initial position to a final position. Rotating the handle to the middle rotation range can adjust the friction force of the rope clamping assembly on the rope. When the handle is in the initial rotation range and the final rotation range, the rope is clamped and locked by the rope clamping assembly. The rope clamping assembly includes a central rotating shaft installed inside the main body, a cam installed on the central rotating shaft, and a return spring installed between the cam and the central rotating shaft. The lower part of the main body is provided with a lower guide part, and the cam is provided with an extrusion protrusion facing the lower guide part. The main body is provided with an extrusion surface that cooperates with the extrusion protrusion. The handle rotating shaft of the handle is not coaxial with the central rotating shaft, and the rope passes through the gap between the extrusion protrusion and the extrusion surface. The cam is provided with a rotating force-bearing component, and the handle is provided with a contact pushing component that cooperates with the rotating force-bearing component. When the handle is rotated to the middle rotation range, the contact pushing component contacts the rotating force-bearing component and gives the rotating force-bearing component a thrust to drive the cam to rotate. The distance between the extrusion protrusion and the extrusion surface gradually increases with the rotation of the cam. When the handle is rotated to the end rotation range, the contact pushing component and the rotating force-bearing component are automatically separated, and the return spring causes the cam to rotate and reset. The dynamic friction between the rope and the cam is converted into static friction. Under the action of this force, the rope is clamped and locked by the extrusion protrusion and the extrusion surface again; The rotating force-bearing component includes a roller shaft installed on the cam and not coaxial with the central shaft, a roller is installed on the roller shaft, the contact pushing component includes a roller push block rotatably installed on the handle through a second shaft, a second torsion spring is installed on the second shaft on the handle, a limit block integrally formed with the handle is provided on the side of the roller push block away from the roller, and a first torsion spring is installed on the handle shaft of the handle.

2. The automatic braking and descending protector with anti-panic function according to claim 1, characterized in that: The upper part of the main body is provided with an upper guide part, the lower part of the main body is provided with a lower guide part and an extrusion protrusion, and the inside of the main body is provided with an extrusion surface that cooperates with the extrusion protrusion. The rope enters the main body from the upper guide part, passes around the cam, and can pass through the lower guide part.

3. The automatic braking and descending protector with a panic prevention function according to claim 2, wherein: The cam is provided with a first anti-slip portion at a position corresponding to where the rope passes around, and the rope is in contact with the first anti-slip portion.

4. The automatic braking and descending protector with a panic prevention function according to claim 2, wherein: The padlock part includes a hollow shaft, and the outer shell of the main body includes a side plate and a cover plate. The hollow shaft passes through the lower part of the side plate and is fixedly connected to the side plate. The hollow shaft also passes through the lower part of the cover plate and is rotatably connected to the cover plate. A socket is provided on the upper part of the cover plate, and an elastic latch assembly is installed at the position corresponding to the socket on the upper part of the side plate. After the latch of the elastic latch assembly is inserted into the socket, the cover plate is locked. At this time, the cover plate cannot rotate around the hollow shaft and is in a closed state. When the latch is pressed to disengage the latch from the socket, the cover plate can rotate around the hollow shaft to an open state.

5. An automatic braking and lowering protector with a panic prevention function according to claim 4, characterized in that: The lower guiding part and the central axis of the padlock part are of an integral structure. The lower guiding part is provided with a first guiding groove for a rope to pass through. The upper guiding part is a cylinder, which is fixedly connected to the inner side of the side plate. A pin hole is opened in the middle of one end of the cylinder facing the cover plate. The elastic pin assembly includes a pin installed in the pin hole and a return spring connecting the pin and the inner end of the pin hole. A second guiding groove is opened on the side of the cylinder. The rope can pass through the second guiding groove into the main body, then bypass the cam and pass through the first guiding groove and then extend out of the main body.

6. The automatic braking and descending protector with a panic prevention function according to claim 3, characterized in that: An arc-shaped groove is opened at the position of the first anti-slip part of the cam. When the rope bypasses the cam, it is stuck in the arc-shaped groove. A plurality of transverse anti-slip grooves are opened at the position of the cam facing the first guiding groove.

7. An automatic braking and descending protector with a panic prevention function according to claim 1, characterized in that: The surface of the roller push block in contact with the roller is a curved surface.

8. An automatic braking and descending protector with a panic prevention function according to claim 1, characterized in that: The angle corresponding to the rotation range A of the first section is 0° to 25°, the angle corresponding to the rotation range C of the last section is 70° to 75°, and the rotation range B of the middle section is located between the rotation range of the first section and the rotation range C of the last section.

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