Mechanical automatic-control clutch brake with preset braking torque and lifting device
By designing a mechanical self-controlled clutch with preset braking torque, and utilizing the engagement and disengagement of rotating and intermediate components as well as the resisting torque of the braking component, the problem of low transmission efficiency under the self-locking function of the worm gear transmission system is solved, achieving a higher energy efficiency ratio.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 赵璇
- Filing Date
- 2025-08-12
- Publication Date
- 2026-05-15
AI Technical Summary
Worm gear transmission systems have low transmission efficiency under self-locking function, resulting in low energy conversion efficiency.
Design a mechanical self-controlled clutch preset braking torque brake, including a rotating component, an intermediate component, and a braking component. By engaging and disengaging the intermediate component and the rotating component, the braking component applies a resisting torque to achieve a self-locking function and improve energy efficiency.
Without affecting the forward transmission efficiency, reverse self-locking is achieved, which improves the energy efficiency ratio and reduces energy consumption.
Smart Images
Figure CN224245302U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of self-locking device technology, specifically relating to a mechanical self-controlled clutch preset braking torque brake and lifting device. Background Technology
[0002] Worm gear drives are widely used in applications requiring protection against reverse drive due to their unique self-locking characteristic (when the lead angle is less than the friction angle, the transmission can only be achieved by the worm driving the worm wheel, and vice versa). However, for a worm gear to achieve its self-locking function, its transmission efficiency must be less than 50%. Therefore, in a transmission system using worm gears, if the worm gear has a self-locking function, then regardless of whether the motor drives the worm to rotate forward or backward, the power output by the motor not only needs to overcome the load but also needs to offset the frictional losses between the worm gears, resulting in low energy conversion efficiency, i.e., low energy efficiency. Utility Model Content
[0003] This application discloses a mechanical self-controlled clutch preset braking torque brake and lifting device. Compared with the prior art, the mechanical self-controlled clutch preset braking torque brake not only has a self-locking function, but also improves the energy efficiency ratio, that is, it is more energy-saving.
[0004] In a first aspect, this application provides a mechanically controlled self-clutch preset braking torque brake, the mechanically controlled self-clutch preset braking torque brake comprising:
[0005] A rotating component, which can rotate in a first direction or a second direction, wherein the first direction and the second direction are opposite to each other;
[0006] An intermediate component, positioned facing the rotating component, separates from the rotating component when the rotating component rotates in the first direction, and engages with the rotating component when the rotating component rotates in the second direction or has a tendency to rotate in the second direction; and
[0007] A braking element is provided corresponding to the intermediate element, and the braking element is used to apply a resisting torque to the intermediate element when the intermediate element is engaged with the rotating element;
[0008] When the main driving torque applied by the rotating member to the intermediate member does not exceed the maximum value of the resisting torque, the rotating member and the intermediate member remain stationary; when the main driving torque applied by the rotating member to the intermediate member exceeds the maximum value of the resisting torque, the intermediate member rotates synchronously with the rotating member in the second direction, wherein the directions of the main driving torque and the resisting torque are opposite.
[0009] As an optional implementation, the mechanical self-controlled clutch preset braking torque brake further includes a force transmission component, wherein the rotating component and the intermediate component together form a receiving space, and the force transmission component is disposed within the receiving space;
[0010] When the rotating member rotates in the first direction, the force transmitting member is movably located within the accommodating space;
[0011] When the rotating member rotates in the second direction or has a tendency to rotate in the second direction, the rotating member transmits the active torque to the intermediate member through the force transmission member.
[0012] As an optional implementation, the accommodating space gradually decreases along the first direction, and the force transmission element is a rolling element that can move within the accommodating space along the first direction or the second direction.
[0013] As an alternative implementation, the rolling element is a sphere or a cylinder.
[0014] As an optional implementation, the intermediate component has ratchet teeth on its inner circumference, the force transmission component is a pawl, and the pawl is rotatably connected to the rotating component;
[0015] Alternatively, the outer periphery of the rotating component is provided with ratchet teeth, the force transmission component is a pawl, and the pawl is rotatably connected to the intermediate component.
[0016] As an optional implementation, at least one rubber ring is provided between the braking component and the intermediate component, and the rubber ring abuts against the braking component and the intermediate component.
[0017] As an optional implementation, a first friction plate and a second friction plate are provided between the braking component and the intermediate component. The first friction plate is connected to the braking component, and the second friction plate is connected to the intermediate component. The first friction plate and the second friction plate are in contact with each other.
[0018] As an optional implementation, a first magnetic element is provided between the braking element and the intermediate element, the first magnetic element is connected to the braking element, and the intermediate element is an object that can be magnetically attracted by the first magnetic element;
[0019] Alternatively, a second magnetic element may be provided between the braking element and the intermediate element, the second magnetic element being connected to the intermediate element, and the braking element being an object that can be magnetically attracted by the second magnetic element;
[0020] Alternatively, a first magnetic element and a second magnetic element may be provided between the braking element and the intermediate element, with the first magnetic element connected to the braking element and the second magnetic element connected to the intermediate element, and the first magnetic element and the second magnetic element magnetically attracting each other.
[0021] As an optional implementation, the braking component includes an outer ring body, a first end cap, and a second end cap, which are connected as a whole. The outer ring body is disposed around the outer periphery of the intermediate component. The first end cap and the second end cap are disposed opposite each other along the rotation center axis of the rotating component and form a receiving space. The receiving space is used to receive at least a portion of the outer ring body, at least a portion of the intermediate component, and at least a portion of the rotating component.
[0022] Secondly, this application also provides a lifting device, which includes the aforementioned mechanical self-controlled clutch preset braking torque brake.
[0023] Compared with the prior art, the beneficial effects of this application are as follows:
[0024] In the mechanical self-controlled clutch preset braking torque brake provided in this application, when the rotating component rotates in the first direction, the intermediate component separates from the rotating component, so the rotation of the rotating component at this time generates almost no loss. When the rotating component rotates in the second direction or has a tendency to rotate in the second direction, the intermediate component engages with the rotating component, and the braking component applies a resisting torque to the intermediate component and the rotating component in the engaged state. That is, the braking component can prevent the rotating component from reversing. If the torque applied to the rotating component by the external force is less than the maximum value of the resisting torque, the rotating component will not rotate in the second direction. In other words, the mechanical self-controlled clutch preset braking torque brake has a self-locking function in the second direction. Therefore, compared with the prior art, this mechanical self-controlled clutch preset braking torque brake not only has a self-locking function but also improves the energy efficiency ratio, that is, it is more energy-saving. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 A schematic diagram of a mechanical self-controlled clutch preset braking torque brake in the form of a rolling element, which is the force transmission component provided in this application.
[0027] Figure 2 for Figure 1 The mechanical self-controlled clutch preset braking torque brake shown is a cross-sectional view along line AA.
[0028] Figure 3 for Figure 1 The diagram shows a cross-sectional view of a mechanical self-controlled clutch with preset braking torque.
[0029] Figure 4 This application provides a schematic diagram of a mechanical self-controlled clutch preset braking torque brake with a ratchet-type force transmission component.
[0030] Figure 5 A schematic diagram of another force transmission component provided in this application, which is a mechanical self-controlled clutch with preset braking torque in the form of a pawl.
[0031] Figure 6 for Figure 2 A partial schematic diagram of a mechanical self-controlled clutch with preset braking torque brake is shown.
[0032] Figure 7 A schematic diagram of a mechanical self-controlled clutch with preset braking torque brake that uses friction plates to impede the movement of intermediate parts, as provided in this application.
[0033] Figure 8 for Figure 7 A partial schematic diagram of a mechanical self-controlled clutch with preset braking torque brake is shown.
[0034] Figure 9 This application provides a schematic diagram of a mechanical self-controlled clutch preset braking torque brake that uses a magnetic component to impede the movement of an intermediate component.
[0035] Figure 10 A schematic diagram of another mechanical self-controlled clutch preset braking torque brake that uses a magnetic component to impede the movement of an intermediate component, as provided in this application.
[0036] Figure 11 A schematic diagram of another mechanical self-controlled clutch preset braking torque brake that uses a magnetic component to impede the movement of an intermediate component, as provided in this application.
[0037] Figure 12 This is a schematic diagram of the lifting device provided in this application.
[0038] Explanation of key figure labels:
[0039] Lifting device 1; Mechanical self-controlled clutch preset braking torque brake 10; Rotating component 11; Main body 111; Protruding ring 112; Intermediate component 12; Braking component 13; Outer ring body 131; First end cover 132; Second end cover 133; Force transmission component 14; Racket Y14; Rubber ring 15; First rubber ring 151; Second rubber ring 152; Third rubber ring 153; First magnetic component 16; Second magnetic component 17; First friction plate 18; Second friction plate 19; First abutting ring 20; Second abutting ring 21; Third abutting ring 22; Fourth abutting ring 23; First direction F1; Second direction F2; Mounting hole X1; Accommodation space X2; First end face M1; Second end face M2; First outer surface M3; Second outer surface M4; First surface M5; Second surface M6. Detailed Implementation
[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0041] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0042] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0043] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0044] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0045] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.
[0046] Please refer to Figures 1 to 3 This application provides a mechanical self-controlled clutch preset braking torque brake 10, which can be applied to, but is not limited to, products such as electric curtains, lifting tables, lifting chairs, and lifting clothes drying devices. The mechanical self-controlled clutch preset braking torque brake 10 includes: a rotating component 11, an intermediate component 12, and a braking component 13, such as... Figure 2 As shown.
[0047] The rotating component 11 can rotate in a first direction F1 or a second direction F2, wherein the first direction F1 and the second direction F2 are opposite to each other.
[0048] The intermediate member 12 is disposed facing the rotating member 11. The intermediate member 12 is annular and surrounds the outer periphery of the rotating member 11. When the rotating member 11 rotates in the first direction F1, the intermediate member 12 separates from the rotating member 11. When the rotating member 11 rotates in the second direction F2 or has a tendency to rotate in the second direction F2, the intermediate member 12 engages with the rotating member 11.
[0049] The braking element 13 is provided corresponding to the intermediate element 12. The braking element 13 is used to apply a resisting torque to the intermediate element 12 when the intermediate element 12 is engaged with the rotating element 11, so as to prevent the intermediate element 12 from rotating with the rotating element 11.
[0050] When the driving torque applied by the rotating member 11 to the intermediate member 12 does not exceed the maximum value of the resisting torque, the rotating member 11 and the intermediate member 12 remain stationary. When the driving torque applied by the rotating member 11 to the intermediate member 12 exceeds the maximum value of the resisting torque, the intermediate member 12 rotates synchronously with the rotating member 11 in the second direction F2. The driving torque and the resisting torque are in opposite directions.
[0051] Specifically, the rotating member 11 is rotatably configured. When the rotating member 11 is driven by an external force, it can rotate in either the first direction F1 or the second direction F2. The first direction F1 can be either counterclockwise or clockwise. This application only uses counterclockwise F1 and clockwise F2 as an example, and this should not be considered a limitation on the technical solution provided in this application. The specific direction can be set according to actual needs.
[0052] A mounting hole X1 can be provided in the middle of the rotating part 11 (e.g., Figure 2 As shown), the rotating component 11 is annular. The mounting hole X1 allows a rotating shaft to be inserted, which can be any rotatable shaft segment in the transmission system (such as the output shaft of a motor, the shaft connecting the load, etc.). The shape of the mounting hole X1 matches the outer contour of the rotating shaft. The mounting hole X1 can be a non-circular hole (such as a roughly triangular hole, an elliptical hole, a rectangular hole, etc.). Using a non-circular hole can prevent the rotating shaft from rotating relative to the rotating component 11.
[0053] When the rotating part 11 is driven by an external force to rotate in the first direction F1, the rotating part 11 and the intermediate part 12 separate. That is, only the rotating part 11 rotates in the first direction F1, while the intermediate part 12 does not rotate with the rotating part 11.
[0054] When the rotating component 11 is driven by an external force to rotate in the second direction F2 or has a tendency to rotate in the second direction F2, the rotating component 11 and the intermediate component 12 are combined. That is, the rotating component 11 will apply a force to the intermediate component 12, and this force will form an active torque on the intermediate component 12. This active torque will cause the intermediate component 12 to rotate synchronously with the rotating component 11 in the second direction F2, or to keep the intermediate component 12 and the rotating component 11 stationary together but have a tendency to rotate in the second direction F2.
[0055] When the intermediate member 12 rotates in the second direction F2 or has a tendency to rotate in the second direction F2, the braking member 13 applies a braking force to the intermediate member 12. This braking force will form a resisting torque on the intermediate member 12. This resisting torque is opposite to the driving torque, and thus will cancel out at least part of the driving torque, thereby hindering the rotation of the intermediate member 12.
[0056] The resisting torque applied by the brake element 13 to the intermediate element 12 increases with the increase of the driving torque and decreases with the decrease of the driving torque, and this resisting torque has a maximum value. When the driving torque has not exceeded (i.e., is less than or equal to) the maximum value of the resisting torque, the resisting torque is equal in magnitude and opposite in direction to the driving torque, that is, the resisting torque will cancel out all the driving torque, thereby keeping the rotating element 11 and the intermediate element 12 stationary, i.e., it has a self-locking function. When the driving torque exceeds (i.e., is greater than) the maximum value of the resisting torque, the resisting torque applied by the brake element 13 to the intermediate element 12 is at its maximum value, and the resisting torque will cancel out part of the driving torque, thereby allowing the rotating element 11 and the intermediate element 12 to rotate synchronously in the second direction F2, i.e., it has a self-locking function.
[0057] In other words, the mechanical self-controlled clutch preset braking torque brake provided in this application has the following functional characteristics: when the rotating component rotates in a first direction, it has the function of actively separating the braking torque (i.e., the resisting torque); when the rotating component rotates in a second direction, it has the function of passively engaging the braking torque (i.e., the resisting torque) to achieve braking, or it has the function of actively overcoming the preset braking torque (i.e., the resisting torque) to smoothly transmit power. These functional characteristics are also referred to as "self-control." In short, the mechanical self-controlled clutch preset braking torque brake provided in this application combines self-controlled clutch with preset braking torque (i.e., resisting torque) to form a function that features efficient power transmission in forward rotation and smooth power transmission in reverse rotation.
[0058] An example is provided using a mechanically controlled self-clutching preset braking torque brake 10 applied to an electric curtain: The electric curtain may include a motor, a mechanically controlled self-clutching preset braking torque brake 10, a roller, the curtain, and a housing. The motor and the mechanically controlled self-clutching preset braking torque brake 10 are housed within the housing. The braking element 13 of the mechanically controlled self-clutching preset braking torque brake 10 can be fixedly mounted on the housing. The rotating element 11 of the mechanically controlled self-clutching preset braking torque brake 10 is sleeved on the output shaft of the motor, meaning the output shaft of the motor can drive the rotating element 11 to rotate. The output shaft of the motor extends out of the housing, and one end of the roller is connected to the output shaft of the motor. The curtain is wound around the roller. The curtain has a certain weight, and the weight of the curtain is applied to the roller, tending to cause the roller to rotate in the second direction F2. The maximum value of the torque exerted by the curtain on the roller is less than or equal to the maximum value of the resisting torque.
[0059] When the motor's output shaft rotates along the first direction F1, the roller and rotating component 11 will rotate synchronously along the first direction F1. During this process, the curtain is gradually wound onto the roller. Since the rotating component 11 and the intermediate component 12 are separated, the rotation of the rotating component 11 in the first direction F1 is not affected by the intermediate component 12 and the braking component 13. Therefore, the mechanical self-controlled clutch preset braking torque brake 10 itself will not generate any loss, or almost no loss. The motor's output is used to overcome the weight of the curtain. When the motor's output shaft rotates along the second direction F2, the roller and rotating component 11 will rotate synchronously along the second direction F2. During this process, the curtain is gradually unrolled by the roller. Since the rotating component 11 is engaged with the intermediate component 12, the rotating component 11 and the intermediate component 12 will rotate synchronously along the second direction F2. The braking component 13 will apply a resisting torque to the intermediate component 12. Therefore, the motor needs to overcome the resisting torque to do work. Understandably, the torque applied by the curtain to the roller will be transmitted to the rotating member 11, causing the rotating member 11 to tend to rotate in the second direction F2. Since the maximum value of the torque applied by the curtain to the roller is less than or equal to the maximum value of the resisting torque, when the motor stops working, the brake member 13 can prevent the rotating member 11 from rotating by the resisting torque, so that the curtain can stay at any unfolded length.
[0060] In summary, in the mechanical self-controlled clutch preset braking torque brake 10 provided in this application, when the rotating member 11 rotates in the first direction F1, the intermediate member 12 separates from the rotating member 11, so the rotation of the rotating member 11 at this time produces almost no loss; when the rotating member 11 rotates in the second direction F2 or has a tendency to rotate in the second direction F2, the intermediate member 12 engages with the rotating member 11, and the braking member 13 applies a resisting torque to the intermediate member 12 and the rotating member 11 in the engaged state, that is, the braking member 13 can prevent the rotating member 11 from reversing. If the torque applied to the rotating member 11 by the external force is less than the maximum value of the resisting torque, the rotating member 11 will not rotate in the second direction F2. In other words, the mechanical self-controlled clutch preset braking torque brake 10 has a self-locking function in the second direction F2. Therefore, compared with the prior art, this mechanical self-controlled clutch preset braking torque brake 10 not only has a self-locking function but also improves the energy efficiency ratio, that is, it is more energy-saving.
[0061] The mechanical self-controlled clutch preset braking torque brake provided in this application can be applied to situations where a motor drives a potential energy load torque. That is, the relationship between the motor torque and the load torque is: they subtract from each other in a single rotational direction, and add to each other in the opposite direction. In other words, the load torque has a unidirectional direction and does not change with the direction of motor rotation. Here, "potential energy load" refers to "a load that produces displacement in a direction parallel to gravity," such as a rolled-up or unfolded curtain, or a garment that is lifted or lowered.
[0062] Please refer to Figures 1 to 3 As an optional implementation, the braking component 13 includes an outer ring body 131, a first end cap 132, and a second end cap 133, all of which are annular. The outer ring body 131, the first end cap 132, and the second end cap 133 are connected as a single unit, and can be connected in a detachable manner, such as by bolts, facilitating subsequent disassembly, maintenance, or replacement. The outer ring body 131 is annular and surrounds the outer periphery of the intermediate component 12. The outer ring body 131 primarily serves to impede the rotation of the intermediate component 12. The first end cap 132 and the second end cap 133 are arranged opposite each other along the rotation center axis of the rotating component 11, forming a receiving space. This receiving space is used to accommodate at least a portion of the outer ring body 131, at least a portion of the intermediate component 12, and at least a portion of the rotating component 11. This arrangement allows the first end cap 132 and the second end cap 133 to cover the structure between the rotating component 11 and the outer ring body 131, thus providing protection and improving aesthetics.
[0063] Optional, please refer to Figure 2 The rotating member 11 may include a main body portion 111 and a protruding ring portion 112. The main body portion 111 has the mounting hole X1. The protruding ring portion 112 is connected around the outer periphery of the main body portion 111 opposite to the mounting hole X1, and the protruding ring portion 112 is disposed within the receiving space.
[0064] Optional, please refer to Figure 2 The main body 111 has a first end face M1 and a second end face M2, which are located on opposite sides of the main body 111. The first end cap 132 has a first outer surface M3, and the second end cap 133 has a second outer surface M4. The first outer surface M3 is flush with the first end face M1, and the second outer surface M4 is flush with the second end face M2.
[0065] Please refer to Figures 1 to 3 As an optional implementation, the mechanical self-controlled clutch preset braking torque brake 10 further includes at least one force transmission element 14, and the rotating element 11 and the intermediate element 12 together form at least one receiving space X2 (e.g., Figure 1 and Figure 3 As shown in the figure, the force transmission component 14 is disposed within the accommodating space X2. The shape of the accommodating space X2 can be approximately triangular, quarter-circular, or fan-shaped.
[0066] When the rotating member 11 rotates in the first direction F1, the force transmission member 14 is movably located within the accommodating space X2. It should be noted that "movable" here does not mean that the force transmission member 14 necessarily moves, but rather that the force transmission member 14 is not yet locked between the rotating member 11 and the intermediate member 12.
[0067] When the rotating member 11 rotates in the second direction F2 or has a tendency to rotate in the second direction F2, the rotating member 11 transmits the active torque to the intermediate member 12 through the force transmission member 14.
[0068] The number of force transmission components 14 can be 1, 2, 3, 4, etc. Similarly, the number of accommodating spaces X2 can also be 1, 2, 3, 4, etc. The number of force transmission components 14 and accommodating spaces X2 can be the same.
[0069] Optionally, there are multiple force transmission components 14 and multiple accommodating spaces X2. The multiple accommodating spaces X2 are arranged at intervals along the rotation center axis of the rotating component 11, and each accommodating space X2 is provided with a force transmission component 14.
[0070] In this embodiment, by providing a force transmission element 14 between the rotating member 11 and the intermediate member 12, the rotating member 11 and the intermediate member 12 can be separated or combined. This structure is simple and efficient.
[0071] Self-controlled clutches come in various forms, such as rolling element type, ratchet type, wedge type, etc. The following describes two implementation methods of the force transmission component 14 with reference to the attached drawings.
[0072] First implementation method: The force transmission component adopts the form of a rolling element.
[0073] Please refer to Figures 1 to 3 The accommodating space X2 gradually decreases along the first direction F1, meaning its volume gradually changes, with one end having the largest volume (referred to as the large end) and the other end having the smallest volume (referred to as the small end). The force transmission component 14 is a rolling element, which can move within the accommodating space X2 along either the first direction F1 or the second direction F2. The rolling element can be a sphere (i.e., a ball bearing) or a cylinder (i.e., a cylindrical roller).
[0074] When the rotating part 11 rotates in the first direction F1, the rolling element moves to the large end of the accommodating space X2. At this time, in the radial direction of the mechanical self-controlled clutch preset braking torque brake 10, the rolling element does not simultaneously contact the rotating part 11 and the intermediate part 12. At this time, the rotating part 11 cannot drive the intermediate part 12 to rotate through the rolling element, that is, the rotating part 11 and the intermediate part 12 are separated.
[0075] When the rotating member 11 rotates in the second direction F2 or has a tendency to rotate in the second direction F2, the rolling element will move toward the small end of the receiving space X2. Before it moves to the small end of the receiving space X2, the rolling element is stuck between the rotating member 11 and the intermediate member 12. At this time, the rotating member 11 transmits the active torque to the intermediate member 12 through the rolling element, so that the intermediate member 12 rotates synchronously with the rotating member 11 in the second direction F2 or has a tendency to rotate in the second direction F2, that is, the rotating member 11 and the intermediate member 12 are combined.
[0076] The second implementation method: The force transmission component adopts a ratchet form.
[0077] Please refer to Figure 4 In one optional embodiment, the inner circumference of the intermediate member 12 is provided with a ratchet Y14. The force transmission member 14 is a pawl, and the pawl is rotatably connected to the rotating member 11. A spring is also provided between the rotating member 11 and the pawl, and the spring is elastically connected to the rotating member 11 and the pawl so that the pawl can always elastically abut against the ratchet Y14.
[0078] When the rotating part 11 rotates in the first direction F1, the rotating part 11 drives the pawl to rotate. The pawl slides on the first surface M5 of different ratchet teeth Y14 in sequence. At this time, the rotating part 11 cannot drive the intermediate part 12 to rotate through the pawl, that is, the rotating part 11 and the intermediate part 12 are separated.
[0079] When the rotating component 11 rotates in the second direction F2, the pawl always abuts against the second surface M6 of the same ratchet Y14. At this time, the rotating component 11 transmits the active torque to the intermediate component 12 through the pawl, so that the intermediate component 12 rotates synchronously with the rotating component 11 in the second direction F2 or has a tendency to rotate in the second direction F2, that is, the rotating component 11 and the intermediate component 12 are combined.
[0080] Please refer to Figure 5 In another optional embodiment, the outer periphery of the rotating member 11 is provided with a ratchet Y14. The force transmission member 14 is a pawl, and the pawl is rotatably connected to the intermediate member 12. A spring is also provided between the intermediate member 12 and the pawl, and the spring is elastically connected to the intermediate member 12 and the pawl so that the pawl can always elastically abut against the ratchet Y14.
[0081] When the rotating part 11 rotates in the first direction F1, the pawl slides on the first surface M5 of different ratchet teeth Y14 in sequence. At this time, the rotating part 11 cannot drive the intermediate part 12 to rotate through the pawl, that is, the rotating part 11 and the intermediate part 12 are separated.
[0082] When the rotating component 11 rotates in the second direction F2, the pawl always abuts against the second surface M6 of the same ratchet Y14. At this time, the rotating component 11 transmits the active torque to the intermediate component 12 through the pawl, so that the intermediate component 12 rotates synchronously with the rotating component 11 in the second direction F2 or has a tendency to rotate in the second direction F2, that is, the rotating component 11 and the intermediate component 12 are combined.
[0083] The foregoing describes two implementations of the force transmission element 14. Of course, in other implementations, the force transmission element can also be in the form of a wedge, which will not be detailed here. It should be noted that the following content of this application is only described based on the assumption that the force transmission element is in the form of a rolling element.
[0084] The preset braking torque (i.e., the resisting torque) can be formed in various forms, such as friction braking torque, magnetic braking torque, and elastic plate braking torque. The following describes three implementation methods for the braking element 13 to resist the movement of the intermediate element 12, with reference to the accompanying drawings.
[0085] The first implementation method: using a rubber ring to impede the movement of the intermediate component (friction braking torque).
[0086] Please refer to Figure 6 At least one rubber ring 15 is provided between the braking member 13 and the intermediate member 12, with opposite sides of the rubber ring 15 abutting against the braking member 13 and the intermediate member 12 respectively. When the intermediate member 12 rotates or has a tendency to rotate, friction will occur between the rubber ring 15 and the braking member 13, or between the rubber ring 15 and the intermediate member 12. That is to say, in this embodiment, the movement of the intermediate member 12 is hindered by setting the rubber ring 15. It is understood that the rubber ring 15 is inexpensive and has a good friction effect.
[0087] Optionally, the rubber ring 15 includes at least one first rubber ring 151, which is sleeved around the outer periphery of the intermediate member 12, with opposite sides of the first rubber ring 151 abutting against the intermediate member 12 and the outer ring body 131, respectively. A first groove may be provided on the outer periphery of the intermediate member 12, and the first rubber ring 151 is disposed within the first groove. The number of first rubber rings 151 can be one, two, three, four, five, etc. When the intermediate member 12 rotates or has a tendency to rotate, the first rubber ring 151 and the outer ring body 131 generate friction, thereby hindering the rotation of the intermediate member 12.
[0088] Optionally, the rubber ring 15 includes at least one second rubber ring 152 and a third rubber ring 153, which are arranged around the opposite sides of the intermediate member 12. The opposite sides of the second rubber ring 152 abut against the intermediate member 12 and the first end cap 132, respectively. The opposite sides of the third rubber ring 153 abut against the intermediate member 12 and the second end cap 133, respectively. A second groove may be provided on the outer side of the intermediate member 12, and the second rubber ring 152 is disposed in the second groove. A third groove may be provided on the side of the intermediate member 12, and the third rubber ring 153 is disposed in the third groove. The number of the second rubber ring 152 and the third rubber ring 153 can be 1, 2, 3, 4, 5, etc. When the intermediate member 12 rotates or has a tendency to rotate, the first rubber ring 151 and the outer ring body 131 generate friction, thereby hindering the rotation of the intermediate member 12.
[0089] The second implementation method: using friction plates to impede the movement of the intermediate component (friction braking torque).
[0090] Please refer to Figure 7 and Figure 8 A first friction plate 18 and a second friction plate 19 (e.g., ...) are provided between the braking component 13 and the intermediate component 12. Figure 8 (As shown). The first friction plate 18 is connected to the outer ring body 131 of the brake member 13. The first friction plate 18 protrudes from the inner circumference of the outer ring body 131. The connection between the first friction plate 18 and the outer ring body 131 can be welding, bonding, etc. The second friction plate 19 is connected to the intermediate member 12. The second friction plate 19 protrudes from the outer circumference of the intermediate member 12. The connection between the second friction plate 19 and the intermediate member 12 can be welding, bonding, etc. The first friction plate 18 and the second friction plate 19 are in close contact with each other. When the intermediate member 12 rotates or has a tendency to rotate, friction is generated between the first friction plate 18 and the second friction plate 19, thereby hindering the rotation of the intermediate member 12.
[0091] The number of first friction plates 18 is at least one, specifically one, two, three, four, five, etc. The number of second friction plates 19 is also at least one, specifically one, two, three, four, five, etc. The number of first friction plates 18 and second friction plates 19 can be the same or different.
[0092] Optionally, there are multiple first friction plates 18 and multiple second friction plates 19. The multiple first friction plates 18 and multiple second friction plates 19 are alternately arranged and attached to each other. That is, a second friction plate 19 is arranged between two adjacent first friction plates 18, and a first friction plate 18 is arranged between two adjacent second friction plates 19.
[0093] Optional, please refer to Figure 8The number of first friction plates 18 is one more than the number of second friction plates 19, so that in the staggered arrangement direction of the first friction plates 18 and the second friction plates 19, the outermost friction plate is the first friction plate 18, that is, in this direction, both the first and last friction plates are the first friction plates 18. The mechanical self-controlled clutch preset braking torque brake 10 also includes a first abutment ring 20 and a second abutment ring 21, which are annular rings made of rubber. The first abutment ring 20 is located between the first friction plate 18 and the first end cap 132, and its opposite sides abut against the first friction plate 18 and the first end cap 132, respectively. The second abutment ring 21 is located between the first friction plate 18 and the second end cap 133, and its opposite sides abut against the first friction plate 18 and the second end cap 133, respectively. With this configuration, the first abutment ring 20 and the second abutment ring 21 will exert a squeezing effect on the first friction plate 18 and the second friction plate 19, creating positive pressure between them. This ensures that the first friction plate 18 and the second friction plate 19 can generate friction when the intermediate part 12 rotates or has a tendency to rotate. Furthermore, both the first abutment ring 20 and the second abutment ring 21 abut against the first friction plate 18, thus preventing the first abutment ring 20 and the second rubber from being worn down by the second friction plate 19, which would weaken the squeezing effect.
[0094] Optional, please refer to Figure 8 The mechanical self-controlled clutch preset braking torque brake 10 may further include a third abutment ring 22 and a fourth abutment ring 23. The third abutment ring 22 and the fourth abutment ring 23 are annular rings made of rubber. The third abutment ring 22 and the fourth abutment ring 23 are respectively disposed on opposite sides of the intermediate member 12, and the opposite sides of the third abutment ring 22 abut against the first end cover 132 and the intermediate member 12, respectively, and the opposite sides of the fourth abutment ring 23 abut against the second end cover 133 and the intermediate member 12, respectively. This arrangement can prevent the intermediate member 12 from swaying left and right. Furthermore, when the intermediate member 12 rotates in the second direction F2, friction is generated between the abutment rings and the intermediate member 12 (or the end cover). This can avoid or reduce the friction between the intermediate member 12 and the end cover, thereby reducing noise. It is understood that the third abutment ring 22 and the fourth abutment ring 23 can also play a role in hindering the rotation of the intermediate member 12.
[0095] The third implementation method: using magnetic components to impede the movement of the intermediate component (magnetic braking torque).
[0096] Please refer to Figure 9In one optional embodiment, a first magnetic element 16 is provided between the braking element 13 and the intermediate element 12. The first magnetic element 16 is a magnetic object capable of generating a magnetic field, such as a magnet. The first magnetic element 16 is connected to the outer ring body 131 of the braking element 13. The intermediate element 12 is an object that can be magnetically attracted by the first magnetic element 16, that is, the intermediate element 12 contains a ferromagnetic material, such as iron or steel. The first magnetic element 16 and the outer ring body 131 are both spaced apart from the intermediate element 12, and the first magnetic element 16 magnetically attracts the intermediate element 12. Through the magnetic attraction between the two, the rotation of the intermediate element 12 can be prevented. The number of first magnetic elements 16 can be one or more, specifically one, two, three, four, five, six, etc. When there are multiple first magnetic elements 16, they are spaced apart along the inner circumference of the outer ring body 131.
[0097] Please refer to Figure 10 In another optional embodiment, a second magnetic element 17 is provided between the braking element 13 and the intermediate element 12. The second magnetic element 17 is a magnetic object capable of generating a magnetic field, such as a magnet. The second magnetic element 17 is connected to the intermediate element 12. The outer ring 131 of the braking element 13 is an object that can be magnetically attracted by the second magnetic element 17, that is, the outer ring 131 contains a ferromagnetic material, such as iron or steel. The second magnetic element 17 is spaced apart from the intermediate element 12, and the second magnetic element 17 magnetically attracts the intermediate element 12. Through the magnetic attraction between the two, the rotation of the intermediate element 12 can be prevented. The number of second magnetic elements 17 can be one or more, specifically one, two, three, four, five, six, etc. When there are multiple second magnetic elements 17, they are spaced apart along the outer periphery of the intermediate element 12.
[0098] Please refer to Figure 11 In another optional embodiment, a first magnetic element 16 and a second magnetic element 17 are provided between the braking element 13 and the intermediate element 12. Both the first magnetic element 16 and the second magnetic element 17 are magnetic objects capable of generating a magnetic field, such as magnets. The first magnetic element 16 is connected to the outer ring 131 of the braking element 13, and the second magnetic element 17 is connected to the intermediate element 12. The first magnetic element 16 and the second magnetic element 17 are arranged opposite to each other and spaced apart, and they magnetically attract each other. Through their magnetic attraction, the rotation of the intermediate element 12 is prevented. The number of first magnetic elements 16 can be one or more, specifically one, two, three, four, five, six, etc. When there are multiple first magnetic elements 16, they are spaced apart along the inner circumference of the outer ring 131. The number of second magnetic elements 17 can also be one or more, specifically one, two, three, four, five, six, etc. When there are multiple second magnetic elements 17, they are spaced apart along the outer circumference of the intermediate element 12. The number of the first magnetic element 16 and the second magnetic element 17 can be the same.
[0099] Please refer to Figure 12 This application also provides a lifting device 1, which includes a mechanical self-controlled clutch preset braking torque brake 10 as described in any of the above embodiments. The lifting device 1 may be, but is not limited to, an electric curtain, a lifting table, a lifting chair, etc.
[0100] In the mechanical self-controlled clutch preset braking torque brake 10, a mounting hole X1 can be provided in the middle of the rotating part 11. The mounting hole X1 allows the rotating shaft to be inserted. The rotating shaft can be any rotatable shaft segment in the lifting device 1 (such as the output shaft of the motor, the rotating shaft connecting the load, etc.).
[0101] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.
Claims
1. A mechanical self-controlled clutch preset braking torque brake (10), characterized in that, The mechanical self-controlled clutch preset braking torque brake (10) includes: Rotating component (11), which can rotate in a first direction (F1) or a second direction (F2), wherein the first direction (F1) and the second direction (F2) are opposite to each other; An intermediate component (12) is disposed facing the rotating component (11). When the rotating component (11) rotates in the first direction (F1), the intermediate component (12) separates from the rotating component (11). When the rotating component (11) rotates in the second direction (F2) or has a tendency to rotate in the second direction (F2), the intermediate component (12) engages with the rotating component (11). Braking member (13), which is provided corresponding to the intermediate member (12), is used to apply a resisting torque to the intermediate member (12) when the intermediate member (12) is engaged with the rotating member (11); When the main driving torque applied by the rotating member (11) to the intermediate member (12) does not exceed the maximum value of the resisting torque, the rotating member (11) and the intermediate member (12) remain stationary; when the main driving torque applied by the rotating member (11) to the intermediate member (12) exceeds the maximum value of the resisting torque, the intermediate member (12) rotates synchronously with the rotating member (11) in the second direction (F2), wherein the directions of the main driving torque and the resisting torque are opposite.
2. The mechanical self-controlled clutch preset braking torque brake (10) as described in claim 1, characterized in that, The mechanical self-controlled clutch preset braking torque brake (10) also includes a force transmission component (14), and the rotating component (11) and the intermediate component (12) together form a receiving space (X2), and the force transmission component (14) is disposed in the receiving space (X2); When the rotating member (11) rotates in the first direction (F1), the force transmission member (14) is movably located within the receiving space (X2); When the rotating member (11) rotates in the second direction (F2) or has a tendency to rotate in the second direction (F2), the rotating member (11) transmits the active torque to the intermediate member (12) through the force transmission member (14).
3. The mechanical self-controlled clutch preset braking torque brake (10) as described in claim 2, characterized in that, The accommodating space (X2) gradually decreases along the first direction (F1), and the force transmission element (14) is a rolling element that can move within the accommodating space (X2) along the first direction (F1) or the second direction (F2).
4. The mechanical self-controlled clutch preset braking torque brake (10) as described in claim 3, characterized in that, The rolling element is a sphere or a cylinder.
5. The mechanical self-controlled clutch preset braking torque brake (10) as described in claim 2, characterized in that, The intermediate component (12) has a ratchet (Y14) on its inner circumference. The force transmission component (14) is a pawl, and the pawl is rotatably connected to the rotating component (11). Alternatively, the outer periphery of the rotating member (11) is provided with ratchet teeth (Y14), the force transmission member (14) is a pawl, and the pawl is rotatably connected to the intermediate member (12).
6. The mechanical self-controlled clutch preset braking torque brake (10) as described in claim 1, characterized in that, At least one rubber ring (15) is provided between the brake member (13) and the intermediate member (12), and the rubber ring (15) abuts against the brake member (13) and the intermediate member (12).
7. The mechanical self-controlled clutch preset braking torque brake (10) as described in claim 1, characterized in that, A first friction plate (18) and a second friction plate (19) are provided between the brake component (13) and the intermediate component (12). The first friction plate (18) is connected to the brake component (13), and the second friction plate (19) is connected to the intermediate component (12). The first friction plate (18) and the second friction plate (19) are in contact with each other.
8. The mechanical self-controlled clutch preset braking torque brake (10) as described in claim 1, characterized in that, A first magnetic element (16) is provided between the braking element (13) and the intermediate element (12). The first magnetic element (16) is connected to the braking element (13), and the intermediate element (12) is an object that can be magnetically attracted by the first magnetic element (16). Alternatively, a second magnetic element (17) may be provided between the braking element (13) and the intermediate element (12), the second magnetic element (17) being connected to the intermediate element (12), and the braking element (13) being an object that can be magnetically attracted by the second magnetic element (17); Alternatively, a first magnetic element (16) and a second magnetic element (17) are provided between the braking element (13) and the intermediate element (12), the first magnetic element (16) is connected to the braking element (13), and the second magnetic element (17) is connected to the intermediate element (12), and the first magnetic element (16) and the second magnetic element (17) are magnetically attracted to each other.
9. The mechanical self-controlled clutch preset braking torque brake (10) as described in any one of claims 1 to 8, characterized in that, The braking component (13) includes an outer ring body (131), a first end cap (132), and a second end cap (133). The outer ring body (131), the first end cap (132), and the second end cap (133) are connected as a whole. The outer ring body (131) is arranged around the outer periphery of the intermediate component (12). The first end cap (132) and the second end cap (133) are arranged opposite to each other along the rotation center axis of the rotating component (11) and form a receiving space. The receiving space is used to receive at least a portion of the outer ring body (131), at least a portion of the intermediate component (12), and at least a portion of the rotating component (11).
10. A lifting device (1), characterized in that, The lifting device (1) includes a mechanical self-controlled clutch preset braking torque brake (10) as described in any one of claims 1 to 9.