Rotary damper with one-way overrunning clutch

Abstract

The present invention discloses a rotary damper with a one-way overrunning clutch, which relates to the technical field of dampers, and includes a housing, an intermediate element and a rotor are arranged on the housing, and a one-way overrunning clutch is arranged between the intermediate element and the rotor, wherein the housing includes a bottom plate and a mounting member, the rotor is rotatably connected to the center position of the intermediate element, the intermediate element is arranged inside the mounting member, and the one-way overrunning clutch includes a gear and at least one planetary gear, the gear and the planetary gear are meshed and connected, and at least one planetary gear is located between the radial outer surface of the rotor and the radial inner surface of the intermediate element. The present invention has the effect of arranging a one-way overrunning clutch between the intermediate element and the rotor, so that when the rotary damper is coordinated and adjusted with the internal device of the automobile, the rotary damper only exerts force in one direction to achieve the effect of one-way damping, and the one-way damper of the present invention has the effects of saving cost, simple structure, and convenient operation.

Description

Technical Field

[0001] The present invention relates to the technical field of dampers, and more particularly to a rotary damper with a one-way overrunning clutch. Background Art

[0002] A damper is a device that provides resistance to movement and dissipates the energy of movement. Using damping to absorb energy and reduce shock is not a new technology. Various dampers have long been used in aerospace, aviation, military, guns, automobiles and other industries to reduce vibration and dissipate energy.

[0003] However, the existing one-way dampers, when used in automobile interior devices, have a relatively complex structure, are inconvenient to operate and install, and more importantly, in order to ensure reliable operation, the parts in the existing one-way dampers are all made of metal materials, which have high material and processing costs.

[0004] Based on the above problems, it is necessary to propose a one-way damper with simple structure, easy operation and cost saving. Summary of the invention

[0005] In view of this problem in practical application, the present invention aims to propose a rotary damper with a one-way overrunning clutch. By arranging a one-way overrunning clutch between the intermediate element and the rotor, when the rotary damper is coordinated with the internal device of the automobile, the rotary damper only exerts force in one direction to achieve the one-way damping effect. The one-way damper of the present invention has the advantages of cost saving, simple structure and convenient operation. The specific scheme is as follows:

[0006] A rotary damper with a one-way overrunning clutch comprises a housing, an intermediate element and a rotor are arranged on the housing, and a one-way overrunning clutch is arranged between the intermediate element and the rotor, wherein:

[0007] The housing comprises a bottom plate and a mounting member, wherein the mounting member is located in the middle of the bottom plate and is embedded with the bottom plate to form an integrated structure.

[0008] A rotor, rotatably connected to the center of the intermediate element,

[0009] An intermediate element is arranged inside the mounting member, a central recess for mounting the rotor is provided at the central position of the intermediate element, at least one dispersed recess is uniformly provided along the radial outer surface of the rotor on one side of the intermediate element, and the central recess is connected to the dispersed recess,

[0010] A one-way overrunning clutch comprises a gear and at least one planetary gear, wherein the gear is connected to the rotor around the radial outer surface of the rotor to form an integral structure, the gear is meshed with the planetary gear, at least one of the planetary gears is located between the radial outer surface of the rotor and the radial inner surface of the intermediate element, and is rotatably connected to the intermediate element, and the planetary gear is located in the dispersion recess.

[0011] The inner side wall of the intermediate element located in the dispersed concave portion is evenly divided into a first wall and a second wall along the direction of the connecting line between the dots of the dispersed concave portion and the dots of the central concave portion. The first wall is a smooth arc-shaped wall, and the second wall is evenly provided with a plurality of saw teeth meshing with the planetary gear.

[0012] When the rotor rotates in one direction, the rotor meshes with at least one of the planetary gears, and at least one of the planetary gears contacts the first wall, and the rotation direction is set to the first rotation direction. At this time, the intermediate element and the housing are relatively stationary, and the planetary gears idle between the rotor and the intermediate element; when the rotor rotates in the opposite direction of the first rotation direction, the rotor meshes with at least one of the planetary gears, and at least one of the planetary gears contacts the second wall and meshes with the saw teeth, so as to realize the rotation of the intermediate element relative to the housing.

[0013] Through the above technical scheme, when the damper in the present invention is used, the damper is first installed in the automobile interior device. During adjustment, when the rotor rotates along the first rotation direction, the rotor is meshed with the planetary gear, and the planetary gear contacts the first wall. Since the first wall is a smooth arc surface, the planetary gear is separated from the intermediate element at this time, and the intermediate element remains relatively stationary relative to the housing. At this time, the damper does not exert a force. When the rotor rotates in the opposite direction of the first rotation direction, the rotor is meshed with the planetary gear, and the planetary gear contacts the second wall. Since the second wall is evenly provided with serrations, the planetary gear is combined with the second wall. At this time, the rotor, the planetary gear and the intermediate element are rigidly coupled. At this time, the intermediate element rotates relative to the housing, and the one-way damper exerts a force in one direction, thereby realizing the normal function of the damper, which helps to improve the buffering effect of the damper. The structure is simple and the operation is convenient.

[0014] Furthermore, the dispersion recesses and the planetary gears are each provided in three, and the three dispersion recesses correspond to the three planetary gears in a one-to-one manner.

[0015] Through the above technical solution, it is ensured that each planetary gear can switch between contacting the first wall or the second wall.

[0016] Furthermore, a braking device is provided between the housing and the intermediate element.

[0017] The braking device includes damping grease for braking the movement of the intermediate element relative to the housing.

[0018] Through the above technical solution, the damping grease is used to realize the relative movement between the intermediate element and the housing, thereby realizing the normal use function of the damper.

[0019] Furthermore, the rotor includes a rotating shaft and a contact rod, one end of the rotating shaft is rotatably connected to the intermediate element, and the other end extends to the interior of the central recess.

[0020] The contact rod is a rod-shaped structure with two rectangular grooves symmetrically formed on the outer side.

[0021] The rotating shaft and the contact rod are connected to form an integrated structure.

[0022] Through the above technical solution, it is convenient to control the rotor and realize the active function of the rotor.

[0023] Furthermore, the inner diameter of the dispersion recess is larger than the outer diameter of the planetary gear.

[0024] Through the above technical solution, it is ensured that when the rotation direction of the rotor is different, the planetary gear can switch between contacting the first wall or the second wall, thereby realizing the normal clutch function of the one-way overrunning clutch.

[0025] Furthermore, the bottom plate is provided with two mounting holes, and the two mounting holes are respectively arranged on two sides of the mounting member.

[0026] Through the above technical solution, the damper of the present invention is installed on the automobile interior decoration device by using the installation hole.

[0027] Furthermore, a mounting cover is mounted on the housing on a side facing the rotor.

[0028] The above technical solution is used to protect the rotor and the one-way overrunning clutch, and helps to prevent the rotor and the one-way overrunning clutch from being separated from the intermediate element.

[0029] Furthermore, at least the one-way overrunning clutch is made of metal, and all components except the one-way overrunning clutch are made of plastic.

[0030] Through the above technical solution, in order to ensure reliable operation, when there is a relatively high working torque, at least the one-way overrunning clutch is made of metal, and all parts except the one-way overrunning clutch are made of plastic. Metal parts represent a large part of the final cost of the product, which is due to the high cost of materials and processing costs. Using plastic to replace metal can reduce the cost of materials and the processing cost of the one-way damper, thereby reducing the production cost as a whole.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention sets a one-way overrunning clutch between the intermediate element and the rotor, so that when the rotary damper is coordinated and adjusted with the internal device of the automobile, the rotary damper only exerts force in one direction to achieve the one-way damping effect, and the one-way damper of the present invention has the advantages of cost saving, simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a three-dimensional diagram of the present invention (without the installation cover);

[0033] Figure 2 is a state diagram of the rotor rotating in the opposite direction of the first rotation direction in the present invention;

[0034] Figure 3 is a state diagram of the rotor rotating along the first rotation direction in the present invention;

[0035] Figure 4 It is a structural schematic diagram of the housing in the present invention;

[0036] Figure 5 It is a front view of the present invention (when the mounting cover is installed).

[0037] Figure numerals: 1. housing; 11. base plate; 12. mounting member; 13. mounting hole; 2. intermediate element; 21. central recess; 22. dispersed recess; 3. rotor; 31. rotating shaft; 32. contact rod; 4. one-way overrunning clutch; 41. gear; 42. planetary gear; 5. first wall; 6. second wall; 61. sawtooth; 7. braking device; 71. damping grease; 8. mounting cover. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0039] Reference Figure 1-4A rotary damper with a one-way overrunning clutch comprises a housing 1, an intermediate element 2 and a rotor 3 are arranged on the housing 1, a one-way overrunning clutch 4 is arranged between the intermediate element 2 and the rotor 3, wherein the housing 1 comprises a bottom plate 11 and a mounting member 12, the mounting member 12 is located in the middle of the bottom plate 11 and is embedded with the bottom plate 11 to form an integrated structure, the rotor 3 is rotatably connected to the center of the intermediate element 2, the intermediate element 2 is arranged inside the mounting member 12, a central recess 21 for mounting the rotor 3 is opened at the center of the intermediate element 2, at least one dispersed recess 22 is evenly opened on one side of the intermediate element 2 along the radial outer surface of the rotor 3, the central recess 21 is connected to the dispersed recess 22, the one-way overrunning clutch 4 comprises a gear 41 and at least one planetary gear 42, the gear 41 is connected to the rotor 3 around the radial outer surface of the rotor 3 to form an integrated structure, the gear 41 is meshed with the planetary gear 42, at least one planetary gear 42 is located between the radial outer surface of the rotor 3 and the radial inner surface of the intermediate element 2, and is rotatably connected to On the intermediate element 2, the planetary gear 42 is located in the dispersion recess 22. The inner side wall of the intermediate element 2 located in the dispersion recess 22 is evenly divided into a first wall 5 and a second wall 6 along the direction of the connecting line between the dots of the dispersion recess 22 and the dots of the central recess 21. The first wall 5 is set as a smooth arc wall. The second wall 6 is evenly provided with a plurality of saw teeth 61 meshing with the planetary gear 42. When the rotor 3 rotates in one direction, the rotor 3 meshes with at least one of the planetary gears 42, and at least one of the planetary gears 42 contacts the first wall 5. The rotation direction is set to the first rotation direction. At this time, the intermediate element 2 and the housing 1 are relatively stationary, and the planetary gear 42 idles between the rotor 3 and the intermediate element 2. When the rotor 3 rotates in the opposite direction of the first rotation direction, the rotor 3 meshes with at least one of the planetary gears 42, and at least one of the planetary gears 42 contacts the second wall 6 and meshes with the saw teeth 61, so as to realize the rotation of the intermediate element 2 relative to the housing 1.Thus, when the damper of the present invention is used, the damper is first installed in the automobile interior device. During adjustment, when the rotor 3 rotates along the first rotation direction, the rotor 3 is meshed with the planetary gear 42, and the planetary gear 42 contacts the first wall 5. Since the first wall 5 is a smooth arc surface, the planetary gear 42 is separated from the intermediate element 2 at this time, and the intermediate element 2 remains relatively stationary relative to the housing 1. At this time, the damper does not function. When the rotor 3 rotates in the opposite direction of the first rotation direction, the rotor 3 is meshed with the planetary gear 42, and the planetary gear 42 contacts the second wall 6. Since the second wall 6 is evenly provided with saw teeth 61, the planetary gear 42 is combined with the second wall 6. At this time, the rotor 3, the planetary gear 42 and the intermediate element 2 are rigidly coupled. At this time, the intermediate element 2 rotates relative to the housing 1, and the one-way damper exerts force in one direction, thereby realizing the normal function of the damper. The structure is simple and the operation is convenient.

[0040] When the distribution positions of the first wall 5 and the second wall 6 in the dispersion recess 22 are exchanged, the one-way damper realizes the action of force in the direction opposite to the action of the above-mentioned force, thereby realizing the damping effect in another direction.

[0041] In addition, at least the one-way overrunning clutch 4 is made of metal, and all parts except the one-way overrunning clutch 4 are made of plastic. In this way, for reliable operation, when there is a relatively high working torque, at least the one-way overrunning clutch 4 is made of metal, and all parts except the one-way overrunning clutch 4 are made of plastic. Metal parts represent a large part of the final cost of the product, which is due to the high cost of materials and processing costs. Using plastic to replace metal can reduce the cost of materials and the processing cost of the one-way damper, thereby reducing the production cost as a whole.

[0042] There are three dispersed recesses 22 and three planetary gears 42, and the three dispersed recesses 22 correspond to the three planetary gears 42. In this way, it is ensured that each planetary gear 42 can realize the mutual switching of contacting with the first wall 5 or the second wall 6.

[0043] The inner diameter of the dispersion recess 22 is larger than the outer diameter of the planetary gear 42. In this way, when the rotation direction of the rotor 3 is different, the planetary gear 42 can switch between contacting the first wall 5 or the second wall 6, thereby realizing the normal clutch function of the one-way overrunning clutch 4.

[0044] The rotor 3 includes a rotating shaft 31 and a contact rod 32. One end of the rotating shaft 31 is rotatably connected to the intermediate element 2, and the other end extends to the inside of the central recess 21. The contact rod 32 is configured as a rod-shaped structure with two rectangular grooves symmetrically opened on the outer side. The rotating shaft 31 and the contact rod 32 are connected to form an integrated structure. In this way, it is convenient to control the rotor 3 and realize the active function of the rotor 3.

[0045] A brake device 7 is provided between the housing 1 and the intermediate element 2, and the brake device 7 includes a damping grease 71, and the damping grease 71 is used to brake the movement of the intermediate element 2 relative to the housing 1. In this way, the damping grease 71 is used to realize the relative movement between the intermediate element 2 and the housing 1, thereby realizing the normal use function of the damper.

[0046] Two mounting holes 13 are provided on the bottom plate 11, and the two mounting holes 13 are respectively arranged on both sides of the mounting member 12. In this way, the damper of the present invention is mounted on the automobile interior device by utilizing the mounting holes 13.

[0047] Reference Figure 5 A mounting cover 8 is mounted on the housing 1 on one side facing the rotor 3. In this way, the mounting cover 8 can be used to protect the rotor 3 and the one-way overrunning clutch 4, and helps prevent the rotor 3 and the one-way overrunning clutch 4 from being separated from the intermediate element 2.

[0048] The specific implementation principle of the present invention is as follows: when the damper of the present invention is used, the damper is first installed in the automobile interior device. During adjustment, when the rotor 3 rotates along the first rotation direction, the rotor 3 is meshed with the planetary gear 42, and the planetary gear 42 contacts the first wall 5. Since the first wall 5 is a smooth arc surface, the planetary gear 42 is separated from the intermediate element 2 at this time, and the intermediate element 2 remains relatively stationary relative to the housing 1. At this time, the damper does not work. When the rotor 3 rotates in the opposite direction of the first rotation direction, the rotor 3 is meshed with the planetary gear 42, and the planetary gear 42 contacts the second wall 6. Since the second wall 6 is evenly provided with saw teeth 61, the planetary gear 42 is combined with the second wall 6. At this time, the rotor 3, the planetary gear 42 and the intermediate element 2 are rigidly coupled. At this time, the intermediate element 2 rotates relative to the housing 1, and the one-way damper exerts force in one direction, thereby realizing the normal function of the damper, which is helpful to improve the buffering effect of the damper. The structure is simple and the operation is convenient.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rotary damper with a one-way overrunning clutch, comprising a housing (1), characterized in that: An intermediate element (2) and a rotor (3) are provided on the housing (1), and a one-way overrunning clutch (4) is provided between the intermediate element (2) and the rotor (3), wherein: The housing (1) comprises a bottom plate (11) and a mounting member (12), wherein the mounting member (12) is located in the middle of the bottom plate (11) and is embedded with the bottom plate (11) to form an integrated structure. A rotor (3) is rotatably connected to the center of the intermediate element (2). The intermediate element (2) is arranged inside the mounting member (12), a central recess (21) for mounting the rotor (3) is provided at the central position of the intermediate element (2), at least one dispersed recess (22) is uniformly provided on one side of the intermediate element (2) along the radial outer surface of the rotor (3), the central recess (21) is connected to the dispersed recess (22), A one-way overrunning clutch (4) comprises a gear (41) and at least one planetary gear (42), wherein the gear (41) is connected to the rotor (3) around the radial outer surface of the rotor (3) to form an integral structure, the gear (41) is meshedly connected with the planetary gear (42), at least one planetary gear (42) is located between the radial outer surface of the rotor (3) and the radial inner surface of the intermediate element (2), and is rotatably connected to the intermediate element (2), and the planetary gear (42) is located in the dispersion recess (22). The inner side wall of the intermediate element (2) located in the dispersion recess (22) is evenly divided into a first wall (5) and a second wall (6) along the direction of the connecting line between the dot of the dispersion recess (22) and the dot of the central recess (21); the first wall (5) is a smooth arc-shaped wall; and the second wall (6) is evenly provided with a plurality of saw teeth (61) meshing with the planetary gear (42). When the rotor (3) rotates in one direction, the rotor (3) meshes with at least one of the planetary gears (42), and at least one of the planetary gears (42) contacts the first wall (5), and the rotation direction is set to a first rotation direction. At this time, the intermediate element (2) and the housing (1) are relatively stationary, and the planetary gear (42) rotates idly between the rotor (3) and the intermediate element (2); when the rotor (3) rotates in the opposite direction of the first rotation direction, the rotor (3) meshes with at least one of the planetary gears (42), and at least one of the planetary gears (42) contacts the second wall (6) and meshes with the saw teeth (61), so as to realize the rotation of the intermediate element (2) relative to the housing (1).

2. The rotary damper with a one-way overrunning clutch according to claim 1, characterized in that: The dispersion recesses (22) and the planetary gears (42) are each provided in three numbers, and the three dispersion recesses (22) correspond one to one to the three planetary gears (42).

3. The rotary damper with a one-way overrunning clutch according to claim 1, characterized in that: A braking device (7) is provided between the housing (1) and the intermediate element (2). The braking device (7) comprises damping grease (71), and the damping grease (71) is used to brake the movement of the intermediate element (2) relative to the housing (1).

4. The rotary damper with a one-way overrunning clutch according to claim 1, characterized in that: The rotor (3) comprises a rotating shaft (31) and a contact rod (32), one end of the rotating shaft (31) is rotatably connected to the intermediate element (2), and the other end extends to the interior of the central recess (21). The contact rod (32) is a rod-shaped structure having two rectangular grooves symmetrically formed on the outer side. The rotating shaft (31) and the contact rod (32) are connected to form an integrated structure.

5. The rotary damper with a one-way overrunning clutch according to claim 1, characterized in that: The inner diameter of the dispersion recess (22) is larger than the outer diameter of the planetary gear (42).

6. The rotary damper with a one-way overrunning clutch according to claim 1, characterized in that: Two mounting holes (13) are provided on the bottom plate (11), and the two mounting holes (13) are respectively arranged on two sides of the mounting member (12).

7. The rotary damper with a one-way overrunning clutch according to claim 1, characterized in that: A mounting cover (8) is mounted on the housing (1) on a side facing the rotor (3).

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