Cambered surface damping buffer device

Abstract

The invention discloses a cambered surface damping buffer device. Relates to an electric actuating mechanism. Comprising an output shaft and further comprises a shell, a damping disc and a disc spring, the shell is provided with an inner hole with a small upper portion and a large lower portion, pin holes are evenly distributed in the top of the shell and communicated with a lower hole of the inner hole, the damping disc is arranged in the lower hole of the inner hole, a plurality of pin shafts are arranged at the top of the damping disc, and the disc spring is arranged in the lower hole of the inner hole. The pin shafts are arranged in the pin holes in a one-to-one correspondence mode. A shaft hole is formed in the middle of the damping disc, and raised damping cambered surfaces B are uniformly distributed at the bottom of the damping disc; the output shaft penetrates through the inner hole and the shaft hole, a disc body is arranged on the output shaft, the disc body is located in a lower hole of the inner hole and located below the damping disc, protruding damping cambered surfaces A are evenly distributed on the top of the disc body, and the damping cambered surfaces A correspond to the damping cambered surfaces B in a one-to-one mode; the device is compact in structure, reasonable in design, safe and reliable.

Description

Technical Field

[0001] This invention relates to electric actuators, and more particularly to an arc-shaped damping buffer device. Background Technology

[0002] Dampers are widely used as key components for shock elimination in the civilian electronics industry. However, while using the viscosity coefficient of fluids to achieve damping force can achieve the damping effect, it still has certain drawbacks, such as low structural strength, small damping torque, and non-adjustable damping torque. Summary of the Invention

[0003] To address the above problems, this invention provides a simple, convenient, and reliable arc-surface damping buffer device.

[0004] The technical solution of the present invention is: an arc-shaped damping buffer device, including an output shaft, and further including a housing, a damping disc, and a disc spring. The outer casing has an inner hole that is smaller at the top and larger at the bottom. The top of the outer casing is evenly distributed with pin holes, which connect to the lower part of the inner hole. The damping disc is disposed in the lower part of the inner hole, and the top of the damping disc is provided with a plurality of pins, each of which is disposed in a corresponding pin hole. The damping disc has a shaft hole in the middle and raised damping arc surfaces B evenly distributed at the bottom. The output shaft passes through the inner hole and the shaft hole. The output shaft is provided with a disc body. The disc body is located in the lower part of the inner hole and below the damping disc. The top of the disc body is provided with raised damping arc surfaces A. The damping arc surfaces A and B correspond one-to-one. An O-ring A is provided between the disc body and the inner wall of the lower hole. An O-ring B is provided between the damping disc and the inner wall of the lower hole. An O-ring C is provided between the output shaft and the inner wall of the shaft hole. A sealed space is formed between the damping disc, the disc body, and the outer shell for storing lubricating grease; The top of the output shaft is connected to a nut via a thread, and the disc spring is sleeved on the output shaft and located between the nut and the housing.

[0005] The top center of the housing is provided with a deep groove ball bearing hole, which is connected to the upper hole of the inner hole. The deep groove ball bearing hole is used to connect the deep groove ball bearing, and the output shaft is connected inside the deep groove ball bearing.

[0006] It also includes a thrust ball bearing, and the output shaft is connected inside the thrust ball bearing; The thrust ball bearing is located between the disc spring and the housing.

[0007] It also includes a washer through which the output shaft passes, and the washer is located between the nut and the disc spring.

[0008] The top of the disc is evenly distributed with raised damping plates. The damping plate is located on the inner ring of the disc, and the damping arc surface A is located on the outer ring of the disc.

[0009] The cross-section of the disk is U-shaped.

[0010] Screw holes are provided around the perimeter of the outer casing.

[0011] In operation, the present invention places the damping disc inside the housing, and the output shaft passes through the inner hole of the housing and the shaft hole of the damping disc. A damping arc surface A is provided on the disc body on the output shaft, which cooperates with the damping arc surface B on the damping disc. At the same time, a nut, a disc spring and a thrust ball bearing are installed on the output shaft for pre-tightening between the output shaft and the damping disc. The damping effect of the output shaft is finally achieved by utilizing the relative sliding between the damping arc surfaces.

[0012] This invention has a compact structure, reasonable design, and is safe and reliable. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In the drawings, the parts are not necessarily drawn to scale.

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 2 This is a schematic diagram of the three-dimensional structure of the outer shell. Figure 3 This is a schematic diagram of the three-dimensional structure of the damping disc. Figure 4 This is a three-dimensional structural diagram of the output shaft; In the diagram, 1 is the output shaft, 111 is the milled flat section, 112 is the O-ring groove A, 113 is the damping arc surface A, 114 is the external thread, 115 is the O-ring groove C, and 116 is the damping plate. 2 is the housing, 21 is the screw hole, 22 is the deep groove ball bearing hole, and 23 is the pin hole. 3 is O-ring A, 4 is O-ring B, 5 is O-ring C, and 6 is a deep groove ball bearing. 7 is the damping disc, 71 is the damping arc surface B, 72 is the shaft hole, 73 is the O-ring seal groove B, 74 is the pin, 8 is the thrust ball bearing, 9 is the disc spring, 10 is the washer, and 11 is the nut. Detailed Implementation

[0015] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0016] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0018] The present invention is as follows Figure 1-4 As shown, an arc-shaped damping buffer device includes an output shaft 1, a housing 2, a damping disc 7, and a disc spring 9. The outer casing 2 has an inner hole that is smaller at the top and larger at the bottom. Pin holes 23 are evenly distributed on the top of the outer casing, and these pin holes connect to the lower part of the inner hole. The damping disk 7 is disposed in the lower part of the inner hole, and the top of the damping disk 7 is provided with a plurality of pins 74, each of which is disposed in a corresponding pin hole. The damping disk 7 has a shaft hole 72 in the middle and raised damping arc surfaces B evenly distributed at the bottom. The output shaft 1 passes through the inner hole and the shaft hole. The output shaft is provided with a disc body. The disc body is located in the lower part of the inner hole and below the damping disc. The top of the disc body is provided with raised damping arc surfaces A. The damping arc surfaces A and B correspond one-to-one. An O-ring A is provided between the disc body and the inner wall of the lower hole. An O-ring B is provided between the damping disc and the inner wall of the lower hole. An O-ring C is provided between the output shaft and the inner wall of the shaft hole. A sealed space is formed between the damping disc, the disc body, and the outer shell for storing lubricating grease; The top of the output shaft 1 is connected to a nut by a thread, and the disc spring is sleeved on the output shaft and located between the nut and the outer shell.

[0019] The O-ring B4 is installed in the O-ring groove B73 of the damping disc 7 to achieve a sealing function.

[0020] The damping disc 7 is installed inside the housing 2, and its pin shaft 74 engages with the pin hole 23 of the housing 2 to restrict the rotation of the damping disc.

[0021] The O-ring A3 is installed in the O-ring groove A112 of the output shaft 1 to achieve a sealing function.

[0022] The O-ring C5 is installed in the O-ring groove C115 of the output shaft 1 to achieve a sealing function.

[0023] The output shaft 1 passes through the housing 2. The deep groove ball bearing 6 is installed in the deep groove ball bearing bore 22 of the housing 2 for fixing the output.

[0024] The disc spring 9, thrust ball bearing 8, washer 10 and nut 11 are installed on the output shaft 1 for pre-tightening between the output shaft 1 and the damping disc 7. The damping effect of the output shaft is finally achieved by utilizing the relative sliding between the damping arc surfaces.

[0025] The outer casing 2 is designed with screw holes 21, deep groove ball bearing holes 22, and pin holes 23 for fixing and installing the device. The screw holes 21 are used to install screws to secure the device; the deep groove ball bearing holes 22 are used to install deep groove ball bearings 6 to fix the output shaft, ensuring concentricity between the output shaft 1 and the outer casing, and allowing free rotation between the output shaft and the outer casing; the pin holes 23 are used to install the pin shaft 74 of the damping disc 7 to restrict the rotational movement of the damping disc.

[0026] The damping disc 7 is designed with a damping arc surface B71, a shaft hole 72, an O-ring groove B73, and a pin 74. These components restrict the rotational movement of the output shaft 1, achieving the damping effect of the device. The damping arc surface B71 is installed face-to-face with the damping arc surface A113 of the output shaft. When the output shaft is subjected to torque, the two damping arc surfaces tend to slide relative to each other, causing the output shaft 1 to move downwards. The disc spring 9 is compressed, and the relative sliding of the two damping arc surfaces generates resistance under the force of the disc spring, achieving the damping effect. The shaft hole 72 is used to fix the output shaft 1, ensuring the sealing effect of the O-ring C on the output shaft. The O-ring groove B73 is used to install the O-ring B4, which mates with the inner hole of the outer casing 2 to ensure a seal. The pin 74 is installed in the pin hole 23 of the outer casing 2 to fix and restrict the rotational movement of the damping disc 7.

[0027] The output shaft 1 is designed with a milled flat section 111, an O-ring groove A112, a damping arc surface A113, an external thread 114, an O-ring groove C115, and a damping plate 116 for connection to external parts and ultimately output damping force. The milled flat section 111 connects to external parts, transmitting the damping force to them; the O-ring groove A112 is used to install the O-ring A3, which mates with the inner hole of the outer shell 2 to ensure a seal; the damping arc surface A113 is installed face-to-face with the damping arc surface B71 of the damping disc, sliding relative to each other and generating damping force under the action of the disc spring; the external thread 114 is used to fix the nut 11, allowing the nut to move up and down by rotating it, thereby adjusting the preload of the disc spring and adjusting the relative sliding resistance between the damping arc surfaces A and B, thus achieving the adjustment of the damping force of the device; the O-ring groove C115 is used for... The O-ring C5 is installed, which mates with the shaft hole 72 of the damping disc 7 to achieve a sealing effect. Combined with the sealing effect of the O-rings A3 and B4, the internal sealing of the device is achieved. That is, a low-temperature grease with viscosity that is not greatly affected by temperature can be installed inside the device to ensure the smooth sliding of the damping arc surface A and the damping arc surface B. At the same time, it interacts with the damping plate 116 of the output shaft, which increases the resistance to the rotation of the output shaft, thereby increasing the damping force of the device. When the output shaft rotates, its damping plate interacts with the low-temperature grease installed inside the device, which tends to resist the rotation of the output shaft 1, thereby further increasing the damping force of the device.

[0028] The cross-section of the disc is U-shaped. Setting the disc in a U-shape facilitates the installation of the damping plate and the formation of a reliable sealed space.

[0029] The function of the disc spring 9 is that when the output shaft 1 rotates, under the action of the damping arc surface A113 and the damping arc surface B71, the output shaft 1 moves downward. The disc spring 9 is compressed and generates a reaction force, which inhibits the downward movement of the output shaft 1 and increases the relative sliding force between the damping arc surfaces A and B, thereby increasing the resistance to the rotation of the output shaft and achieving a damping effect. The damping magnitude can be adjusted by rotating the nut 11 to adjust the preload of the disc spring.

[0030] The function of the thrust ball bearing 8 is to ensure that the output shaft 1 rotates while bearing the downward pressure, thereby achieving the stability and reliability of the rotation and force of the device.

[0031] The function of the washer 10 is to ensure the mounting plane between the nut 11 and the disc spring 9, so that the disc spring is subjected to uniform force, thereby ensuring the stability and reliability of the device.

[0032] This invention solves the problem of non-adjustable resistance torque of ordinary dampers, optimizes the design structure, simplifies the structure, reduces costs, and also reduces the volume of the damper, thereby reducing the overall volume of the equipment using the damper.

[0033] This invention improves the reliability of the damper, ensures the consistency of products using the damper, and enhances the overall market competitiveness of the products.

[0034] Regarding the information disclosed in this case, the following points need to be clarified: (1) The accompanying drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design. (2) Where there is no conflict, the embodiments and features disclosed in this case can be combined with each other to obtain new embodiments; The above are merely specific embodiments disclosed in this case, but the scope of protection of this disclosure is not limited thereto. The scope of protection disclosed in this case shall be determined by the scope of protection of the claims.

Claims

1. A cambered damping suspension device comprising an output shaft, characterized in that, It also includes a shell, a damping disc and a disc spring, The shell has an inner hole with a small top and a large bottom, and the top of the shell is uniformly provided with a pin hole which communicates with the lower hole of the inner hole, The damping disc is arranged in the lower hole of the inner hole, and the top of the damping disc is provided with a plurality of pin shafts which are arranged one by one in the pin hole; The middle of the damping disc is provided with an axle hole, and the bottom is uniformly provided with a convex damping arc surface B; The output shaft passes through the inner hole and the axle hole, and the output shaft is provided with a disc body, which is located in the lower hole of the inner hole and below the damping disc, and the top of the disc body is uniformly provided with a convex damping arc surface A which corresponds to the damping arc surface B one by one; An O-shaped sealing ring A is arranged between the disc body and the inner wall of the lower hole, An O-shaped sealing ring B is arranged between the damping disc and the inner wall of the lower hole, An O-shaped sealing ring C is arranged between the output shaft and the inner wall of the axle hole, The damping disc, the disc body and the shell form a sealed space for placing lubricating grease; The top of the output shaft is connected with a threaded nut, and the disc spring is sleeved on the output shaft and located between the nut and the shell.

2. A cambered damping suspension device according to claim 1, characterized in that A deep groove ball bearing hole is arranged in the middle of the top of the shell, which communicates with the upper hole of the inner hole, and is used to connect a deep groove ball bearing, and the output shaft is connected in the deep groove ball bearing.

3. A cambered damping suspension according to claim 2, characterized in that A thrust ball bearing is also included, and the output shaft is connected in the thrust ball bearing; The thrust ball bearing is located between the disc spring and the shell.

4. The cambered damping cushion device of claim 1, wherein A washer is also included, and the output shaft passes through the washer which is located between the nut and the disc spring.

5. The cambered damping cushion device of claim 1, wherein The top of the disc body is uniformly provided with a convex damping plate, The damping plate is located in the inner ring of the disc body, and the damping arc surface A is located in the outer ring of the disc body.

6. A cambered damping suspension according to claim 5, characterized in that The cross section of the disc body is U-shaped.

7. The cambered damping cushion device of claim 1, wherein Screw holes are arranged around the shell.

Images