Buckle type cylinder damper

Abstract

The utility model relates to the technical field of dampers, in particular to a buckle type cylinder damper which comprises a shell, a rotating shaft, a large sealing ring and a small sealing ring, the rotating shaft is inserted into the inner wall of the shell, the large sealing ring and the small sealing ring are arranged between the shell and the rotating shaft in a sleeved mode, first annular grooves are formed in the shell and the rotating shaft, and the first annular grooves are communicated with the rotating shaft. The inner wall of the outer cylinder of the shell and the outer wall of the outer cylinder of the rotating shaft form a first damping cavity, the outer wall of the inner cylinder of the shell and the inner wall of the first outer cylinder of the rotating shaft form a second damping cavity, and the shell is further provided with a second annular groove. According to the utility model, the problems of low concentricity between the shell and the rotating shaft, unstable assembly height, small pulling-out force of the rotating shaft and over-high ultrasonic welding cost are solved through a clamping groove clamping mode, and the problems of unstable torque and poor damping effect of a single damping cavity are solved through the arrangement of the first damping cavity and the second damping cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of dampers, in particular to a buckle-type cylinder damper. Background Art

[0002] A cartridge damper is a type of rotary damper, and a rotary damper is a phenomenon or mechanism used to control the motion of a rotating system. Rotational damping is an important concept in many engineering applications, especially in mechanical systems, aerospace equipment, automobiles, electronic equipment, and instrumentation. Rotational damping is usually achieved by introducing a damping force or dissipative mechanism into the rotating system to slow down the rotational motion or prevent excessive oscillation of the rotating system. This damping can be in the form of mechanical damping, liquid damping, or gas damping.

[0003] In the prior art, when the rotary damper is in use, the concentricity between the shell and the rotating shaft is not high and the assembly height is unstable, which causes the rotary damper to easily run unsmoothly when in use, affecting the user experience. Therefore, a snap-on cylinder damper is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a snap-on cylinder damper to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A snap-on cartridge damper comprises: a shell, a rotating shaft, a large sealing ring and a small sealing ring. The rotating shaft is inserted into the inner wall of the shell, and the large sealing ring and the small sealing ring are sleeved between the shell and the rotating shaft. The shell and the rotating shaft are sealed to prevent leakage of damping grease inside. The large sealing ring and the small sealing ring are both O-rings. The O-ring is the most common sealing ring structure. Its cross-section is circular and is suitable for static or dynamic sealing. It is usually made of rubber or other elastic materials. The sealing ring is made of rubber or other elastic materials. When in use, it can be resistant to friction and high pressure, thereby achieving a perfect seal between the top of the rotating shaft and the outer shell, limiting the flow of gas between the inside and the outside when working, avoiding oil leakage during the use of the damper, and improving the stability of the damper. The main function of the two sealing rings in this application is to prevent the damping grease from leaking from the joint between the outer shell and the rotating shaft. It fills the gap between the joint parts to form a sealed isolation layer, prevents the medium from leaking to the outside or entering the inside of the device from the outside, prevents external substances such as dust, dirt, moisture from entering the inside of the mechanical device, and keeps the mechanical device clean and operating normally.

[0007] Preferably, a first annular groove is provided on the outer shell and the rotating shaft, the outer cylinder inner wall of the outer shell and the outer cylinder outer wall of the rotating shaft form a first damping chamber, and the inner cylinder outer wall of the outer shell and the first outer cylinder inner wall of the rotating shaft form a second damping chamber, so that the damping effect is better, and the first annular groove is divided into a first damping chamber and a second damping chamber by using the rotating shaft embedded in the first annular groove, and a sealing effect is formed by filling the damping grease inside.

[0008] Preferably, the shell is also provided with a second annular groove, which is connected to the first annular groove, and the diameter of the second annular groove is larger than that of the first annular groove. A large sealing ring is interference-fitted between the inner wall opening of the outer cylinder of the shell and the outer wall of the outer cylinder of the rotating shaft, and a small sealing ring is interference-fitted between the outer wall opening of the inner cylinder of the shell and the inner wall of the second outer cylinder of the rotating shaft, which are used to seal the first damping chamber and the second damping chamber. The outer side of the large sealing ring is sealed, and a thin film of lubricant is formed between the engaging parts to reduce the friction between the contact surfaces, thereby extending the service life of the mechanical device. In this damping structure, the sealing ring can also help maintain the internal pressure of the system stable and ensure the normal operation of the system. A small sealing ring is interference-fitted between the outer wall opening of the inner cylinder of the shell and the inner wall of the second outer cylinder of the rotating shaft to achieve a sealing effect on the damping grease in the first damping chamber and the second damping chamber.

[0009] Preferably, an inclined surface boss is arranged in the outer shell, an inclined surface groove is opened below the inner cylinder of the rotating shaft, and the inclined surface boss is clamped in the inclined surface groove.

[0010] Preferably, the bottom surface of the inclined boss of the shell is tightly fitted with the bottom surface of the inclined groove of the rotating shaft to achieve the snap-fit ​​assembly of the shell and the rotating shaft, and the bottom of the rotating shaft is snap-fitted into the shell to achieve fixation, and then cooperates with the two sealing rings above it to seal the two damping chambers to prevent the rotating shaft from detaching from the shell.

[0011] Preferably, four through holes are provided at the outer cylinder of the rotating shaft and are connected to the inner wall of the first annular groove of the rotating shaft. The rotating shaft is installed in the outer shell, and the air in the damping chamber is discharged through the four through holes for exhaust. When the outer shell and the rotating shaft move relative to each other, the air in the damping chamber is discharged, and the damping grease is evenly distributed when stirred, and the torque is stable, so that the damping effect is better. Damping grease is a lubricant used in mechanical systems. Damping grease can form a lubricating film between components to reduce direct contact between components, thereby reducing vibration and noise. Damping grease can also provide a certain degree of friction damping in the mechanical system, so that the components have appropriate damping force when moving or stopping, prevent excessive movement or sudden stop from causing adverse effects, improve the stability and safety of the system, reduce friction and wear between components, thereby extending the service life of components, and reduce maintenance and replacement costs. It can also form a lubricating film between the inner walls of the two damping chambers between the rotating shaft and the outer shell, continuously provide lubrication effect, maintain the good operation state of components, and extend the service life of components.

[0012] Preferably, a through slot is provided at the bottom of the inner wall of the inner cylinder of the rotating shaft to facilitate the installation of the rotating shaft into the outer shell. Two through slots are provided on the inner side of the rotating shaft so that when the rotating shaft is inserted into the interior of the outer shell, the inner wall of the rotating shaft can be contracted at the center of the two through slots, so that the outer wall of the first inner cylinder can contact the inner side of the inclined boss, thereby conveniently snapping the rotating shaft directly into the outer shell to achieve fixation, and the rotating shaft can be rotated directly in the outer shell.

[0013] Preferably, two symmetrically arranged bosses are fixedly connected to the top of the rotating shaft for rotating the rotating shaft, and a protrusion is fixedly connected to the outer wall of the shell for limiting the rotation of the shell. The two symmetrically arranged bosses and the protrusion are integrally arranged on the rotating shaft and the shell. The two bosses are installed on an external device to connect and rotate the rotating shaft through the two bosses, and the protrusions on the shell are used to contact another external device to limit the shell from following the rotation, thereby achieving a damping effect during the rotation. At the same time, the shell and the rotating shaft are prepared by one-piece casting technology, and the different shapes of multiple components of the shell and the rotating shaft are integrated into a single whole to reduce the number of connecting parts in the assembly process, improve the strength and stability of the components, and reduce the assembly cost, so that the shell and the rotating shaft have higher structural strength and stability, because the entire component is continuous and there are no seams or connection points, which helps to reduce the number of parts, reduce assembly time, and improve the air tightness of the damper during use. At the same time, it can improve the concentricity of its shell and the rotating shaft, and improve its assembly stability.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The slot connection method is used to solve the problems of low concentricity between the housing and the rotating shaft, unstable assembly height, low pulling force of the rotating shaft and high ultrasonic welding cost. The first damping chamber and the second damping chamber are set to solve the problems of unstable torque and poor damping effect of a single damping chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating shaft of the utility model;

[0020] Figure 5 It is a schematic diagram of the explosion structure of the utility model.

[0021] In the figure: 1, outer shell; 2, rotating shaft; 3, large sealing ring; 4, small sealing ring; 101, bump; 102, opening of inner wall of outer tube; 103, opening of outer wall of inner tube; 104, inner wall of outer tube; 105, outer wall of inner tube; 106, bottom surface of inclined boss; 107, inclined boss; 201, boss; 202, outer wall of outer tube; 203, inner wall of first outer tube; 204, inner wall of second outer tube; 205, inner wall of inner tube; 206, through hole; 207, inclined slot; 208, bottom surface of inclined slot; 209, through slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0026] like Figure 1-5 As shown, a snap-on cylinder damper comprises: a housing 1, a rotating shaft 2, a large sealing ring 3 and a small sealing ring 4. During installation, the rotating shaft 2 is embedded and inserted into the inner wall of the housing 1, and the large sealing ring 3 and the small sealing ring 4 are sleeved between the housing 1 and the rotating shaft 2 to seal the housing 1 and the rotating shaft 2 to prevent oil leakage therein. The large sealing ring 3 and the small sealing ring 4 are both O-rings. The O-ring is the most common sealing ring structure. Its cross-section is circular and is suitable for static or dynamic sealing. It is usually made of rubber or other elastic materials. The sealing ring is made of rubber or other elastic materials. When in use, it can be resistant to friction and high pressure, thereby achieving a perfect seal between the top of the rotating shaft 2 and the outer shell 1, limiting the flow of gas between the inside and the outside during operation, avoiding oil leakage during the use of the damper, and improving the stability of the damper. The main function of the two sealing rings in this application is to prevent the damping grease from leaking from the joint between the outer shell 9 and the rotating shaft 2. It fills the gap between the joint parts to form a sealed isolation layer, prevents the medium from leaking to the outside or entering the inside of the device from the outside, prevents external substances such as dust, dirt, moisture from entering the inside of the mechanical device, and keeps the mechanical device clean and operating normally.

[0027] Furthermore, a first annular groove is provided on both the outer shell 1 and the rotating shaft 2, the outer cylinder inner wall 104 of the outer shell 1 and the outer cylinder outer wall 202 of the rotating shaft 2 form a first damping chamber, and the inner cylinder outer wall 105 of the outer shell 1 and the first outer cylinder inner wall 203 of the rotating shaft 2 mutually form a second damping chamber, so that the damping effect is better, and the first annular groove is divided into a first damping chamber and a second damping chamber by using the rotating shaft 2 embedded in the first annular groove, and a sealing effect is formed by filling damping grease inside.

[0028] Furthermore, a second annular groove is provided in the outer shell 1 and is connected to the first annular groove, and the diameter of the second annular groove is larger than that of the first annular groove. A large sealing ring 3 is interference-fitted between the outer cylinder inner wall opening 102 of the outer shell 1 and the outer cylinder outer wall 202 of the rotating shaft 2. The outer side is sealed by the large sealing ring 3, and a thin film of lubricant is formed between the engaging parts to reduce the friction between the contact surfaces, thereby extending the service life of the mechanical device. In this damping structure, the sealing ring can also help maintain the pressure inside the system stable and ensure the normal operation of the system. A small sealing ring 4 is interference-fitted between the outer wall opening 103 of the inner cylinder of the outer shell 1 and the second outer cylinder inner wall 204 of the rotating shaft 2 to achieve a sealing effect on the damping grease in the first damping chamber and the second damping chamber.

[0029] Furthermore, in order to limit the rotating shaft 2 from escaping from the outer shell 1, a bevel boss 107 is provided in the outer shell 1, and a bevel groove 207 is provided below the inner cylinder of the rotating shaft 2, and the bevel boss 107 is clamped in the bevel groove 207, and the bottom surface 106 of the bevel boss of the outer shell 1 is tightly fitted with the bottom surface 208 of the bevel groove of the rotating shaft 2 to realize the clamping assembly of the outer shell 1 and the rotating shaft 2, and the bottom of the rotating shaft 2 is clamped into the outer shell 1 to achieve fixation, and then cooperate with the two sealing rings above it to seal the two damping chambers to prevent the rotating shaft 2 from escaping from the outer shell 1.

[0030] Furthermore, in order to connect the air flow between the two damping chambers, four through holes 206 are opened on the outer cylinder of the rotating shaft 2, and are connected with the inner wall of the first annular groove of the rotating shaft 2. The rotating shaft 2 is installed in the housing 1, and the air in the damping chamber is discharged through the four through holes 206 for exhaust. When the housing 1 and the rotating shaft 2 move relative to each other, the air in the damping chamber is discharged, and the damping grease is evenly distributed when stirred, and the torque is stable, so that the damping effect is better. Damping grease is a lubricant used in mechanical systems. Damping grease can form a lubricating film between components to reduce direct contact between components. Thereby reducing the generation of vibration and noise, damping grease can also provide a certain degree of friction damping in the mechanical system, so that the parts have appropriate damping force when moving or stopping, preventing adverse effects caused by excessive movement or sudden stop, improving the stability and safety of the system, and reducing friction and wear between parts, thereby extending the service life of parts and reducing maintenance and replacement costs. It can also form a lubricating film between the inner walls of the two damping chambers between the rotating shaft 2 and the housing 1, continuously providing lubrication effect, maintaining the good operation of the parts, and extending the service life of the parts.

[0031] A through slot 209 is provided at the bottom of the inner wall 205 of the inner cylinder of the rotating shaft 2, so that the rotating shaft 2 can be easily installed in the housing 1. Two through slots 209 are provided on the inner side of the rotating shaft 2, so that when the rotating shaft 2 is inserted into the interior of the housing 1, the inner wall of the rotating shaft 2 can be contracted at the center of the two through slots 209, so that the outer wall 204 of the first inner cylinder can contact the inner side of the inclined boss 107, thereby conveniently clamping the rotating shaft 2 directly into the housing 1 to achieve fixation, and the rotating shaft 2 can be directly rotated in the housing 1.

[0032] Two symmetrically arranged bosses 201 are fixedly connected to the top of the rotating shaft 2 for rotating the rotating shaft 2 , and a protrusion 101 is fixedly connected to the outer wall of the housing 1 for limiting the rotation of the housing 1 . The two symmetrically arranged bosses 201 and the protrusions 101 are integrally arranged on the rotating shaft 2 and the housing 1. The two bosses 201 are installed on an external device to connect and the rotating shaft 2 is rotated through the two bosses 201. At the same time, the protrusions 101 on the housing 1 are used to contact another external device to limit the housing 1 from following the rotation, thereby achieving a damping effect during the rotation. At the same time, the housing 1 and the rotating shaft 2 are prepared by an integral casting technology, and the different shapes of multiple components of the housing 1 and the rotating shaft 2 are integrated into a single whole to reduce the number of connectors in the assembly process, improve the strength and stability of the components, and reduce the assembly cost, so that the housing 1 and the rotating shaft 2 have higher structural strength and stability, because the entire component is continuous and there are no seams or connection points, which helps to reduce the number of parts, reduce assembly time, and improve the air tightness of the damper during use. At the same time, it can improve the concentricity of the housing 1 and the rotating shaft 2, and improve the stability of its assembly.

[0033] The working principle of the utility model is as follows:

[0034] The rotating shaft 2 is installed in the outer shell 1, and the large sealing ring 3 and the small sealing ring 4 are assembled to the inner wall thereof to form a first damping chamber and a second damping chamber filled with damping grease. When in use, the problems of low concentricity between the outer shell 1 and the rotating shaft 2, unstable assembly height, low pull-out force of the rotating shaft 2 and high cost of ultrasonic welding are solved by means of a card slot connection. The first damping chamber and the second damping chamber therebetween solve the problems of unstable torque and poor damping effect of a single damping chamber. When in use, an external device 1 is installed on the inner wall of the rotating shaft 2, and the rotating shaft 2 is rotated by moving the two bosses 201. The device 2 is used to resist the bump 101 to limit the outer shell 1 from rotating with the rotating shaft 2, so that during the relative rotation of the rotating shaft 2 and the outer shell 1, the damping grease is stirred, and the damping grease flow between the two damping chambers is realized through the through hole 206. When the rotating shaft 2 is rotated in the direction, the two damping chambers inside it will work in the opposite direction to generate damping, so that it can be slowly reset.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A snap-on cartridge damper, characterized in that: include: A housing (1), a rotating shaft (2), a large sealing ring (3) and a small sealing ring (4); the rotating shaft (2) is inserted into the inner wall of the housing (1), and the large sealing ring (3) and the small sealing ring (4) are sleeved between the housing (1) and the rotating shaft (2).

2. The snap-on cartridge damper according to claim 1, characterized in that: The outer shell (1) and the rotating shaft (2) are both provided with a first annular groove; the outer cylinder inner wall (104) of the outer shell (1) and the outer cylinder outer wall (202) of the rotating shaft (2) form a first damping chamber; the inner cylinder outer wall (105) of the outer shell (1) and the first outer cylinder inner wall (203) of the rotating shaft (2) mutually form a second damping chamber.

3. The snap-on cartridge damper according to claim 1, characterized in that: The shell (1) is also provided with a second annular groove which is in communication with the first annular groove, and the diameter of the second annular groove is larger than that of the first annular groove. A large sealing ring (3) is interference-fitted between the opening (102) of the inner wall of the outer cylinder of the shell (1) and the outer wall (202) of the outer cylinder of the rotating shaft (2), and a small sealing ring (4) is interference-fitted between the opening (103) of the outer wall of the inner cylinder of the shell (1) and the inner wall (204) of the second outer cylinder of the rotating shaft (2), for sealing the first damping chamber and the second damping chamber.

4. The snap-on cartridge damper according to claim 1, characterized in that: An inclined surface boss (107) is arranged inside the outer shell (1), an inclined surface slot (207) is provided below the inner cylinder of the rotating shaft (2), and the inclined surface boss (107) is snap-fitted into the inclined surface slot (207).

5. The snap-on cartridge damper according to claim 1, characterized in that: The bottom surface (106) of the inclined boss of the housing (1) is tightly fitted with the bottom surface (208) of the inclined slot of the rotating shaft (2).

6. The snap-on cartridge damper according to claim 1, characterized in that: Four through holes (206) are provided on the outer cylinder of the rotating shaft (2) and are communicated with the inner wall of the first annular groove of the rotating shaft (2). The rotating shaft (2) is installed in the outer shell (1), and the air in the damping cavity is discharged through the four through holes (206) for exhaust.

7. The snap-on cartridge damper according to claim 1, characterized in that: A through slot (209) is provided at the bottom of the inner wall (205) of the inner cylinder of the rotating shaft (2), so as to facilitate the installation of the rotating shaft (2) into the outer shell (1).

8. The snap-on cartridge damper according to claim 1, characterized in that: The top of the rotating shaft (2) is fixedly connected to two symmetrically arranged bosses (201) for rotating the rotating shaft (2), and the outer wall of the housing (1) is fixedly connected to a convex block (101) for limiting the rotation of the housing (1).

Images