Automatic winding device capable of being self-locked at any position

Abstract

The invention discloses an automatic coiling device capable of self-locking at any position, which comprises a main body bracket, a limiting clamping plate, a rotating shaft, a cam, a ratchet wheel, a pull belt, a rotating damping plate and a damping spring, the limiting clamping plate and the rotating shaft are arranged in the main body bracket, the ratchet wheel, the rotating damping plate and the damping spring are sequentially and concentrically sleeved outside the rotating shaft, and the cam is arranged on the ratchet wheel; a pull belt is arranged between the rotating shaft and an inner hole of the ratchet wheel, the limiting clamping plate is connected with one end of a return steel wire, the other end of the return steel wire is connected with the body support, and return rotation is provided for the limiting clamping plate through deformation of the return steel wire. According to the automatic winding device capable of being self-locked at any position, the automatic winding device can be withdrawn at any position and self-locked at any position through cooperation of the ratchet wheel, the rotary damping plate, the cam and other components, the automatic winding device does not need to be lifted to a specific height after self-locking, the device can be easily unlocked and continuously put down only by slightly lifting goods, the structure is simple, and the practicability is high. The waist carrying exoskeleton is simple in structure, convenient to operate and suitable for the waist carrying exoskeleton and the application scene that the height of goods needs to be adjusted through a sling for lifting the goods in a factory, and has certain popularization prospects.

Description

Technical Field

[0001] The invention belongs to the field of wire winding, and in particular relates to an automatic wire winding device which can be self-locked at any position. Background Art

[0002] With the development of science and technology and the increasing needs of users, nowadays, various products / equipment with cables (such as ropes, power cables, data cables, and other linear and flat-belt-shaped) are equipped with automatic winding mechanisms to organize the cables. At present, there are roughly two types of automatic winding mechanisms: one is self-locking when retracted, that is, the cable wound in the automatic winding mechanism can be arbitrarily stretched, and when the cable is retracted under the tension of the coil spring, it is locked at a specific position by a ratchet to prevent the pulled cable from being completely retracted, such as automatic retractable air drums, automatic retractable power supplies, automatic winding USB, etc.; the other is self-locking when stretched, that is, when the cable is pulled out at a speed exceeding a certain speed, the cable is automatically locked, but it can be retracted arbitrarily when retracted, such as car seat belts.

[0003] However, in some usage scenarios, not only is a device that can be retracted at will, but it is also required to be able to be easily extended to the target length after self-locking at any position. In the vast majority of existing products, when the user picks up the goods and self-locks them at the target height, the goods need to be lifted to a specific height (such as patent CN114634068A) before entering the unlocking area, which is inconvenient for the user. Therefore, there is an urgent need for a device that can be retracted at any position, self-locked at any position, and does not need to be lifted to a specific height after self-locking. The device can be easily unlocked and continued to be lowered by slightly lifting the goods, so as to be suitable for the above-mentioned waist-carrying exoskeleton, and the application scenario where the slings for holding goods in factories need to adjust the height of the goods. Summary of the invention

[0004] In view of the above problems, the purpose of the present invention is to provide an automatic wire winding device that can self-lock at any position, the main body of which is placed on the shoulders or back of the human body, the rope is passed around the head or shoulders and then placed in front of the chest, and the user wears modular carrying hooks or gloves on both hands. When the user wants to put down his arms to pick up the goods, he only needs to stretch the pull wire from the initial position at any speed to the height of the goods; after the user picks up the goods, he can lift the hook to a convenient position, and it will be automatically locked. At this time, the user can use the locked rope to transfer the weight of the heavy object to the shoulders and waist through the rope, without the need for the arm to provide continuous force to maintain the height of the heavy object; when the user wants to put down the goods or lower the height of the goods, he only needs to lift the goods slightly, and the telescopic pulling out locking mechanism will be unlocked, and the user can put down the goods or lower the height of the goods.

[0005] The specific technical solution for achieving the purpose of the present invention is:

[0006] An automatic winding device capable of self-locking at any position, comprising a main body bracket, a limit clamping plate, a rotating shaft, a cam, a ratchet, a tension belt, a rotating damping plate and a damping spring;

[0007] The limit clamping plate and the rotating shaft are arranged in the main body bracket, and the ratchet, the rotating damping plate and the damping spring are concentrically sleeved outside the rotating shaft in sequence;

[0008] A cam is arranged on the ratchet wheel;

[0009] A tension belt is arranged between the rotating shaft and the inner hole of the ratchet wheel.

[0010] Furthermore, the limit clamping plate is connected to one end of the return force steel wire, and the other end of the return force steel wire is connected to the main support, and the deformation of the return force steel wire is used to provide return force rotation for the limit clamping plate.

[0011] Furthermore, the rotating shaft is limitedly connected to the main body bracket through a retaining spring, a coil spring is arranged on the rotating shaft, a coil spring mounting shell is arranged on the coil spring, and the coil spring mounting shell is connected to the main body bracket.

[0012] Furthermore, the rotation damping plate includes a limit baffle, a rotation plate outer ring and a groove;

[0013] The outer ring of the rotating plate is sleeved on the rotating shaft and is concentrically sleeved with the ratchet wheel. A limit baffle and a groove are respectively arranged on the outer ring of the rotating plate.

[0014] Furthermore, the rotating shaft and the coil spring are connected in a limiting manner.

[0015] Furthermore, when the automatic winding device is in the initial state, it is in an unlocked state, and the tension belt can be pulled freely;

[0016] When the tension belt is stretched to the expected length, the ratchet wheel rotates in the opposite direction so that the automatic winding device is adjusted to a locked state, and the tension belt cannot be pulled at this time;

[0017] When the automatic winding device needs to be adjusted to an unlocked state, the ratchet wheel continues to rotate in the reverse direction so that the automatic winding device is adjusted to an unlocked state, and the tension belt can be pulled freely at this time.

[0018] Furthermore, when the automatic winding device is in the initial state, the tension belt is completely wound around the ratchet wheel, lifting the limit card plate, at which time the limit card plate is separated from the ratchet wheel, so that the automatic winding device is in an unlocked state, and the tension belt can be pulled freely;

[0019] During the stretching process of the tension belt, the rotating shaft drives the ratchet and the rotating damping plate to rotate synchronously. When the rotating damping plate rotates to a certain angle, the limit baffle rotates into position and contacts the limit card plate for limiting position. At this time, the limit card plate rotates back to the outer circle position of the rotating plate, so that the limit card plate and the ratchet remain separated, thereby making the automatic winding device in an unlocked state.

[0020] Furthermore, the automatic winding device is adjusted to a locked state by reverse rotation of the ratchet wheel, specifically:

[0021] By lifting the automatic winding device, the ratchet wheel rotates in the opposite direction, driving the cam to rotate in the opposite direction until the limit card plate is in the valley area of ​​the cam, thereby making the limit card plate engage with the ratchet wheel to limit the movement of the limit card plate. The automatic winding device is adjusted to the locked state, and the tension belt cannot be pulled at this time.

[0022] Furthermore, the automatic winding device is adjusted to an unlocked state by reverse rotation of the ratchet wheel, specifically:

[0023] By lifting the automatic winding device, the ratchet wheel rotates in the opposite direction, driving the cam to rotate in the opposite direction until the limit card is in the flange area of ​​the cam, so that the limit card cannot engage with the ratchet wheel. The automatic winding device is adjusted to the unlocked state, and the tension belt can be pulled freely.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The automatic wire winding device of the present invention which can self-lock at any position can be retracted and self-locked at any position by the cooperation of components such as a ratchet, a rotary damping plate, and a cam. After self-locking, it does not need to be lifted to a specific height, and the device can be easily unlocked and continued to be lowered by just slightly lifting the goods. The structure is simple and the operation is convenient. It is suitable for the above-mentioned waist-carrying exoskeleton and the application scenarios in which the slings for hanging goods in factories need to adjust the height of the goods, and has certain promotion prospects.

[0026] The present invention is further described below in conjunction with specific implementation modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the general assembly diagram and explosion diagram of the automatic winding device capable of self-locking at any position of the present invention.

[0028] Figure 2 It is a cross-sectional view of the automatic winding device capable of self-locking at any position of the present invention.

[0029] Figure 3 The figure is a schematic diagram of the rotary damping plate of the automatic winding device capable of self-locking at any position according to the present invention.

[0030] Figure 4It is a schematic diagram of the cam capable of self-locking at any position of the present invention.

[0031] Figure 5 It is a schematic diagram of the limiting connection between the rotating shaft and the winding spring of the automatic winding device that can self-lock at any position of the present invention.

[0032] Figure 6 It is a schematic diagram of the initial state of the automatic winding device capable of self-locking at any position of the present invention.

[0033] Figure 7 It is a schematic diagram of the internal parts status of the automatic winding device capable of self-locking at any position of the present invention during the tension belt stretching process.

[0034] Figure 8 It is a schematic diagram of the internal parts status of the tension belt of the automatic winding device that can self-lock at any position of the present invention during the recovery process.

[0035] Fig. 9 It is a schematic diagram of the self-locking state of the automatic winding device capable of self-locking at any position of the present invention.

[0036] Fig.10 It is a schematic diagram of the unlocking state of the automatic winding device capable of self-locking at any position of the present invention. DETAILED DESCRIPTION

[0037] Example

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an kind" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0040] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0041] Combination Figures 1 to 5 , an automatic winding device capable of self-locking at any position, comprising a main frame 1, a limit clamping plate 2, a rotating shaft 3, a cam 6, a ratchet 7, a tension belt 8, a rotating damping plate 9 and a damping spring 11;

[0042] A fixed installation hole is provided on the main support 1, and the entire device can be fixedly installed on the target base. The limit card plate 2 and the rotating shaft 3 are arranged in the main support 1, and the ratchet 7, the rotating damping plate 9 and the damping spring 11 are concentrically sleeved outside the rotating shaft 3 in sequence;

[0043] The ratchet wheel 7 is provided with a cam 6 , which can be fixedly connected to the ratchet wheel 7 by screws.

[0044] A tension band 8 is arranged between the rotating shaft 3 and the inner hole of the ratchet 7. In this embodiment, the tension band 8 is clamped between the rotating shaft 3 and the inner hole of the ratchet 7 by interference fit, and a hook or other element can be installed at the other end of the tension band 8.

[0045] The limit clamping plate 2 is connected to one end of the return force steel wire 12 , and the other end of the return force steel wire 12 is connected to the main support 1 , and the deformation of the return force steel wire 12 is used to provide return force rotation for the limit clamping plate 2 .

[0046] The end of the rotating shaft 3 close to the return force steel wire 12 is limitedly connected to the main bracket 1 through a retaining spring 10, and a coil spring 5 is arranged on the rotating shaft 3. The rotating shaft 3 and the coil spring 5 are limitedly connected. In this embodiment, the inner side of the coil spring 5 is limited in the corresponding slot of the end of the rotating shaft 3 away from the return force steel wire 12 through a slot, and the coil spring 5 is limited in the corresponding slot of the coil spring mounting shell 4 through the slot, and the coil spring mounting shell 4 is connected to the main bracket 1 through screws or inverted slots.

[0047] In this embodiment, the rotation damping plate 9 includes a limit baffle 901, a rotation plate outer ring 902 and a groove 903;

[0048] The outer ring 902 of the rotating plate is sleeved on the rotating shaft 3 and is concentrically sleeved with the ratchet 7. The outer ring 902 of the rotating plate is provided with a limit baffle 901 and a groove 903 respectively;

[0049] In this embodiment, the cam 6 includes a cam valley area 601 and a cam flange area 602 , and the cam valley area 601 and the cam flange area 602 are used to achieve the engagement and separation of the ratchet wheel 7 and the limiting clamping plate 2 .

[0050] The working process of the automatic winding device is introduced in more detail below in combination with the specific structure.

[0051] Combination Figure 6 When the automatic winding device is in the initial state, it is in the unlocked state, and the tension belt 8 can be pulled freely; the tension belt 8 is completely wound around the ratchet 7, lifting the limit card plate 2, and at this time the limit card plate 2 is separated from the ratchet 7, so that the automatic winding device is in the unlocked state, and the tension belt 8 can be pulled freely;

[0052] Combination Figures 7 and 8 During the stretching process of the tension belt 8, the rotating shaft 3 drives the ratchet 7 and the rotating damping plate 9 to rotate synchronously. When the rotating damping plate 9 rotates to a certain angle, the limit baffle 901 rotates into position and contacts the limit card plate 2 for limiting position. At this time, the limit card plate 2 rotates to the position of the outer ring 902 of the rotating plate. Since the radius of the rotating damping plate 9 is greater than the radius of the ratchet, the limit card plate 2 cannot rotate to engage with the ratchet 7, so that the limit card plate 2 and the ratchet 7 remain separated. Therefore, when the tension belt 8 continues to be stretched downward, it is always in the "unlocking zone" during the stretching process, and the automatic winding device is in an unlocked state.

[0053] At the same time, during the pulling-out process, the ratchet 7 will be pulled to rotate together, and the rotating shaft 3 will also rotate together. At the same time, since the inner ring of the coil spring 5 is limitedly connected to the rotating shaft 3, the inner ring of the coil spring 5 will also be rotated and rolled, so that the coil spring 5 has a certain reverse rotation force.

[0054] When the user stretches the tension belt 8 to the expected length, the user picks up the goods and starts to pull the goods upwards. At this time, the tension belt 8 will automatically retract under the action of the reverse rotation force of the coil spring 5. Since the ratchet 7 will rotate in the opposite direction with the tension belt during the retraction process, the ratchet does not have a self-locking function at this time, so the user can freely lift to the expected height. When the user is lifting the goods, the ratchet 7 rotates in the opposite direction, which drives the rotary damping plate 9 to rotate in the opposite direction. After rotating a certain angle, the lower limit of the 901 limit baffle of the rotary damping plate 9 contacts the main bracket 1 for limit. At this time, the limit card plate 2 rotates to the groove 903. Due to the limit effect, the 9 rotary damping plate will not continue to rotate with the ratchet.

[0055] At this time, the ratchet wheel 7 can be rotated in the reverse direction to adjust the automatic winding device to a locked state, and the tension belt 8 cannot be pulled at this time;

[0056] That is, by lifting the automatic winding device, the ratchet wheel 7 rotates in the opposite direction, driving the cam 6 to rotate in the opposite direction, until the limit card plate 2 is in the valley area of ​​the cam 6, so that the limit card plate 2 is engaged with the ratchet wheel 7 to limit the movement of the limit card plate 2, and the automatic winding device is adjusted to the locked state. At this time, the tension belt 8 cannot be pulled. At this time, the weight of the heavy object can be transferred to the shoulders and waist through the rope, and the arms do not need to provide continuous force to maintain the height of the heavy object. Fig. 9 shown.

[0057] When in the "deadlock zone", when the user needs to lower the height of the goods or put down the goods, the automatic winding device needs to be adjusted to the unlocked state, and the ratchet wheel 7 continues to rotate in the opposite direction to adjust the automatic winding device to the unlocked state, and the tension belt 8 can be pulled freely at this time;

[0058] That is, by lifting the automatic winding device, the ratchet wheel 7 rotates in the opposite direction, driving the cam 6 to rotate in the opposite direction, until the limit card plate 2 is in the flange area of ​​the cam 6, so that the limit card plate 2 cannot engage with the ratchet wheel 7, and the automatic winding device is adjusted to the unlocked state. At this time, the tension belt 8 can be pulled freely. At this time, the user can continue to freely stretch the tension belt 8 to adjust the height of the goods to the desired height, such as Fig.10 shown.

[0059] The automatic wire winding device of the present invention can be retracted at any position and self-locked at any position. After self-locking, it does not need to be lifted to a specific height. It only needs to slightly lift the goods to unlock the function of continuing to lower the goods. It can be well applied to the above-mentioned waist-carrying exoskeleton and the application scenarios where the slings for holding goods in factories need to adjust the height of the goods.

[0060] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An automatic winding device capable of self-locking at any position, characterized in that: It comprises a main body support (1), a limit clamping plate (2), a rotating shaft (3), a cam (6), a ratchet (7), a tension belt (8), a rotating damping plate (9) and a damping spring (11); The limit clamping plate (2) and the rotating shaft (3) are arranged in the main frame (1), and the ratchet wheel (7), the rotating damping plate (9) and the damping spring (11) are sequentially and concentrically sleeved outside the rotating shaft (3); A cam (6) is arranged on the ratchet wheel (7); A tension belt (8) is arranged between the rotating shaft (3) and the inner hole of the ratchet wheel (7).

2. The automatic wire winding device capable of self-locking at any position according to claim 1, characterized in that: The limit clamping plate (2) is connected to one end of the return force steel wire (12), and the other end of the return force steel wire (12) is connected to the main support (1), and the deformation of the return force steel wire (12) is used to provide return force rotation for the limit clamping plate (2).

3. The automatic winding device capable of self-locking at any position according to claim 2, characterized in that: The rotating shaft (3) is connected to the main support (1) in a limiting manner via a retaining spring (10); a coil spring (5) is arranged on the rotating shaft (3); a coil spring mounting shell (4) is arranged on the coil spring (5); and the coil spring mounting shell (4) is connected to the main support (1).

4. The automatic wire winding device capable of self-locking at any position according to claim 3, characterized in that: The rotation damping plate (9) comprises a limit baffle (901), a rotation plate outer ring (902) and a groove (903); The outer ring (902) of the rotating plate is sleeved on the rotating shaft (3) and is sleeved concentrically with the ratchet (7). A limit baffle (901) and a groove (903) are respectively provided on the outer ring (902) of the rotating plate.

5. The automatic wire winding device capable of self-locking at any position according to claim 3, characterized in that: The rotating shaft (3) and the coil spring (5) are connected in a limiting manner.

6. The automatic wire winding device capable of self-locking at any position according to claim 4, characterized in that: When the automatic winding device is in the initial state, it is in an unlocked state, and the tension belt (8) can be pulled freely; When the tension belt (8) is stretched to a desired length, the ratchet wheel (7) rotates in the opposite direction so that the automatic winding device is adjusted to a locked state, and the tension belt (8) cannot be pulled at this time; When the automatic winding device needs to be adjusted to an unlocked state, the ratchet wheel (7) continues to rotate in the reverse direction so that the automatic winding device is adjusted to an unlocked state, and the tension belt (8) can be pulled freely at this time.

7. The automatic wire winding device capable of self-locking at any position according to claim 6, characterized in that: When the automatic winding device is in the initial state, the tension belt (8) is completely wound around the ratchet (7), lifting the limit clamp (2), at which time the limit clamp (2) is separated from the ratchet (7), so that the automatic winding device is in an unlocked state, and the tension belt (8) can be pulled freely; During the stretching process of the tension belt (8), the rotating shaft (3) drives the ratchet (7) and the rotating damping plate (9) to rotate synchronously. When the rotating damping plate (9) rotates to a certain angle, the limit baffle (901) rotates to the position to contact the limit card plate (2) for limiting. At this time, the limit card plate (2) rotates back to the position of the outer ring (902) of the rotating plate, so that the limit card plate (2) and the ratchet (7) remain separated, thereby making the automatic winding device in an unlocked state.

8. The automatic wire winding device capable of self-locking at any position according to claim 6, characterized in that: The automatic winding device is adjusted to a locked state by reverse rotation of the ratchet wheel (7), specifically: By lifting the automatic winding device, the ratchet wheel (7) rotates in the opposite direction, driving the cam (6) to rotate in the opposite direction until the limit card plate (2) is in the valley area of ​​the cam (6), thereby making the limit card plate (2) mesh with the ratchet wheel (7) to limit the movement of the limit card plate (2), and the automatic winding device is adjusted to a locked state, at which time the tension belt (8) cannot be pulled.

9. The automatic wire winding device capable of self-locking at any position according to claim 6, characterized in that: The automatic winding device is adjusted to an unlocked state by the reverse rotation of the ratchet wheel (7), specifically: By lifting the automatic winding device, the ratchet wheel (7) rotates in the opposite direction, driving the cam (6) to rotate in the opposite direction until the limit clamping plate (2) is in the flange area of ​​the cam (6), so that the limit clamping plate (2) cannot mesh with the ratchet wheel (7), and the automatic winding device is adjusted to the unlocked state, at which time the tension belt (8) can be pulled freely.

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