Rotary damper

Abstract

The utility model discloses a rotary damper, which relates to the field of damper design and comprises a shell, and a shaft core is arranged in the shell. A rotating groove is formed in the left end of the shell, a positioning column is formed in the middle of the interior of the rotating groove, a rotating gap is reserved between the positioning column and the rotating groove, the shaft core is rotationally and cooperatively installed in the rotating groove, a circular groove is formed in the right end of the shaft core, and the positioning column is installed in the circular groove in a clearance fit mode. A plurality of damping teeth are formed on the outer side of the right end of the shaft core, the damping teeth are arranged in a circular array mode, the shaft core is installed in the rotating groove in a rotating fit mode through the damping teeth, and the space between the damping teeth and the rotating groove is filled with damping oil; according to the rotary damper, an oil passing structure can be formed between the damping teeth on the outer side of the shaft core and the rotary groove of the shell, compared with a traditional mode that oil passing grooves are formed in the two sides, the rotary damper has higher stability, the rotary damper can be directly used as a damping hinge, a hinge does not need to be additionally arranged, and therefore cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of damper design, in particular to a rotation damper. 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 vibration is not a new technology. Various dampers (or shock absorbers) have long been used in aerospace, aviation, military, guns, automobiles and other industries to reduce vibration and dissipate energy. Since the 1970s, people have gradually transferred these technologies to structural engineering such as buildings, bridges, and railways, and their development has been very rapid. In particular, the hydraulic viscous damper, which has a history of more than 50 years, has undergone a long process of a large number of experiments, strict reviews, repeated demonstrations, and especially earthquake tests before being accepted by the structural engineering community in the United States. A device that can quickly stop the movable part of the instrument at a stable deflection position. In seismic instruments, dampers are used to absorb the inherent vibration energy of the vibration system, and their damping force is generally proportional to the speed of the vibration system. There are three main types: liquid dampers, gas dampers, and electromagnetic dampers. Dampers play an important role in compensating for the small friction and air resistance in the vibration pickup pendulum system and improving frequency response.

[0003] The rotation damper in the prior art generally has an oil groove on the outside of the shaft core. For example, the prior art (announcement number: CN207921225U, announcement date: 2018.09.28) discloses a toilet cover rotation damper, which can be disassembled and assembled without the need for disassembly and assembly tools. It has a simple structure, is easy to disassemble and assemble, and is convenient for replacing internal parts. It does not require disassembly and assembly tools, and is easy and quick to use. At the same time, it can also ensure the sealing of the inside and outside, ensure that the internal oil will not leak, improve the sealing of the damper, and extend its service life.

[0004] In the above-mentioned damper scheme, it is necessary to fill the space between the outer shell and the shaft core with damping oil. When the damper is working, the damping oil will pass through the oil groove on the outside of the shaft core. Since the damping oil has high viscosity, it can play a role in damping and buffering the rotation. However, in the prior art and the above-mentioned scheme, the oil groove is only set on both sides, resulting in a small contact area between the shaft core and the outer shell, which will affect the stability of the overall damper during rotation. In addition, too few oil grooves will affect the normal rotation of the rotation damper, and increasing the number of oil grooves will affect the overall strength of the oil structure, resulting in a reduction in its service life. At the same time, increasing the number of oil grooves will also cause the oil structure to become more complicated, resulting in more difficult production. In addition, the rotation dampers in the prior art generally need to be used in conjunction with hinge joints and cannot be directly used as damping hinges, resulting in higher costs.

[0005] Therefore, it is necessary to design a new oil-passing structure and use it in the rotation damper. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.

[0007] A rotation damper comprises a housing, wherein a shaft core is arranged in the housing;

[0008] The left end of the housing is formed with a rotation groove, the middle of the rotation groove is formed with a positioning column, a rotation gap is left between the positioning column and the rotation groove, the shaft core is rotationally mounted in the rotation groove, the right end of the shaft core is formed with a circular groove, the positioning column is gap-fittedly mounted in the circular groove;

[0009] A plurality of damping teeth are formed on the outer side of the right end of the shaft core, and the plurality of damping teeth are arranged in a circular array with each other. The shaft core is rotatably mounted in the rotating groove through the plurality of damping teeth, and damping oil is filled between the plurality of damping teeth and the rotating groove.

[0010] Furthermore: a sealing ring is formed on the outer side of the left end of the shaft core, a first annular sealing groove is formed on the inner edge of the left end of the rotating groove, and the sealing ring is installed in the first annular sealing groove with a clearance fit.

[0011] Furthermore: the cross section of the first annular sealing groove is a semicircular arc structure.

[0012] Furthermore: the left end of the shaft core extends out of the rotating groove, a clamping block is formed on the left end of the shaft core, a positioning convex edge is formed on the outer side of the shell, and a rotating shaft is integrally formed in the middle of the right side of the shell.

[0013] Furthermore: the sealing ring is located between the clamping block and a plurality of damping teeth.

[0014] Further: the damping oil filling is installed on the right side of the sealing ring, between a plurality of damping teeth and the rotating groove.

[0015] Furthermore: a second annular sealing groove is formed on the outer side of the left end of the shaft core, and the second annular sealing groove is located between the left ends of the plurality of damping teeth and the sealing ring.

[0016] Further: a rubber ring is sleeved and installed in the second annular sealing groove, and the outer edge of the rubber ring abuts against the rotating groove.

[0017] Furthermore: the cross section of the second annular sealing groove is a semicircular arc structure.

[0018] Further: the damping oil is filled and installed on the right side of the rubber ring, between a plurality of damping teeth and the rotating groove.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. A positioning column is arranged in the rotating groove of the housing. The shaft core can be installed in the rotating groove through the cooperation of the circular groove and the positioning column, which can prevent the damping teeth from directly contacting the inner wall of the rotating groove and ensure the stable rotation of the shaft core in the housing;

[0021] 2. After installation, the damping oil is filled between the damping teeth and the rotating groove. The circular array arrangement of several damping teeth can form a stable wide gear structure, thereby ensuring the service life of the rotating damper;

[0022] 3. The shaft core can also be rotated and fitted in the rotating groove through a plurality of damping teeth on the outside, which can further ensure the stable rotation of the shaft core. The damping oil can flow to the gaps between the plurality of damping teeth and the rotating groove, thereby enhancing the damping buffering effect.

[0023] In the utility model, an oil-passing structure can be formed between a plurality of damping teeth on the outside of the shaft core and the rotating groove of the outer shell. Compared with the traditional method of using a single-sided or double-sided oil-passing groove, it has higher stability, allowing the rotation damper to be directly used as a damping hinge without the need for additional hinges, thereby effectively reducing costs.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a structural schematic diagram of the utility model;

[0027] Figure 2 yes Figure 1 A schematic diagram of the structure from another perspective;

[0028] Figure 3 It is a schematic diagram of the explosion structure of the first embodiment;

[0029] Figure 4 yes Figure 3 A schematic diagram of the structure from another perspective;

[0030] Figure 5 is a schematic cross-sectional structure diagram of the first embodiment;

[0031] Figure 6 yes Figure 5Exploded structure diagram;

[0032] Figure 7 It is a schematic diagram of the explosion structure of the second embodiment;

[0033] Figure 8 yes Figure 7 A schematic diagram of the structure from another perspective;

[0034] Fig. 9 is a schematic cross-sectional structure diagram of the second embodiment;

[0035] Fig.10 yes Fig. 9 Schematic diagram of the explosion structure.

[0036] As shown in the figure: 1. outer shell; 2. shaft core; 3. rotating groove; 4. positioning column; 5. rotating gap; 6. circular groove; 7. damping tooth; 8. damping oil; 9. sealing ring; 10. first annular sealing groove; 11. clamping block; 12. positioning convex edge; 13. rotating shaft; 14. second annular sealing groove; 15. rubber ring. DETAILED DESCRIPTION

[0037] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0038] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0039] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0040] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Embodiment 1, as Figure 1-6 As shown, a rotation damper of the utility model comprises a shell 1, wherein a shaft core 2 is arranged in the shell 1; a rotation groove 3 is formed at the left end of the shell 1, a positioning column 4 is formed in the middle of the rotation groove 3, a rotation gap 5 is left between the positioning column 4 and the rotation groove 3, the shaft core 2 is rotationally fitted in the rotation groove 3, a circular groove 6 is formed at the right end of the shaft core 2, and the positioning column 4 is gap-fitted in the circular groove 6; a plurality of damping teeth 7 are formed on the outer side of the right end of the shaft core 2, and the plurality of damping teeth 7 are arranged in a circular array with each other, the shaft core 2 is rotationally fitted in the rotation groove 3 through the plurality of damping teeth 7, and damping oil 8 is filled between the plurality of damping teeth 7 and the rotation groove 3;

[0043] The principle is as follows: a positioning column 4 is arranged in the rotating groove 3 of the outer shell 1, and the shaft core 2 can be rotatably engaged on the positioning column 4 of the rotating groove 3 through the circular groove 6, thereby preventing the damping tooth 7 from directly contacting the inner wall of the rotating groove 3. After the installation is completed, the damping oil 8 is filled between the damping tooth 7 and the rotating groove 3. A plurality of damping teeth 7 arranged in a circular array can form a stable wide gear structure, thereby ensuring the service life of the rotation damper. The shaft core 2 can also be rotatably engaged in the rotating groove 3 through a plurality of damping teeth 7 on the outside, thereby ensuring the stable rotation of the shaft core 2. The damping oil 8 can flow to the gap between the plurality of damping teeth 7 and the rotating groove 3, thereby enhancing the damping buffering effect.

[0044] A sealing ring 9 is formed on the outer side of the left end of the shaft core 2, and a first annular sealing groove 10 is formed on the inner edge of the left end of the rotating groove 3. The sealing ring 9 is installed in the first annular sealing groove 10 with a clearance fit; it can effectively prevent the damping oil 8 from leaking, thereby ensuring the service life of the rotating damper.

[0045] The cross section of the first annular sealing groove 10 is a semicircular arc structure; it has the characteristics of high strength and is not easily damaged.

[0046] The left end of the shaft core 2 extends out of the rotation groove 3, the left end of the shaft core 2 is formed with a clamping block 11, the outer side of the shell 1 is formed with a positioning convex edge 12, and the middle part of the right side of the shell 1 is integrally formed with a rotating shaft 13; the clamping block 11 and the positioning convex edge 12 can be installed to the position where rotation buffering is required, so that the utility model can be used as a damping hinge.

[0047] The sealing ring 9 is located between the clamping block 11 and the plurality of damping teeth 7; the damping oil 8 is filled and installed on the right side of the sealing ring 9, between the plurality of damping teeth 7 and the rotating groove 3; the damping oil 8 can stay between the damping teeth 7 and the rotating groove 3 to achieve effective sealing of the damping oil 8.

[0048] Embodiment 2, as Figure 1-2 and Figure 6-10 As shown, compared with the first embodiment, a further scheme is added: a second annular sealing groove 14 is formed on the outer side of the left end of the shaft core 2, and the second annular sealing groove 14 is located between the left ends of the plurality of damping teeth 7 and the sealing ring 9; a rubber ring 15 is sleeved and installed in the second annular sealing groove 14, and the outer edge of the rubber ring 15 abuts against the rotating groove 3; the sealing effect of the damping oil 8 can be further enhanced.

[0049] The cross section of the second annular sealing groove 14 is a semicircular arc structure, which can ensure the overall strength of the shaft core 2 and has a long service life.

[0050] The damping oil 8 is filled and installed on the right side of the rubber ring 15 , between the plurality of damping teeth 7 and the rotating groove 3 ; the double sealing of the damping oil 8 can be achieved through the rubber ring 15 and the sealing ring 9 .

[0051] In the utility model, an oil-passing structure can be formed between the plurality of damping teeth 7 on the outside of the shaft core 2 and the rotating groove 3 of the outer shell 1. Compared with the traditional method of using a single-sided or double-sided oil-passing groove, it has higher stability, allowing the rotating damper to be directly used as a damping hinge.

[0052] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A rotation damper, comprising a housing, wherein a shaft core is arranged in the housing; Features: The left end of the housing is formed with a rotation groove, the middle of the rotation groove is formed with a positioning column, a rotation gap is left between the positioning column and the rotation groove, the shaft core is rotationally mounted in the rotation groove, the right end of the shaft core is formed with a circular groove, the positioning column is gap-fittedly mounted in the circular groove; A plurality of damping teeth are formed on the outer side of the right end of the shaft core, and the plurality of damping teeth are arranged in a circular array with each other. The shaft core is rotatably mounted in the rotating groove through the plurality of damping teeth, and damping oil is filled between the plurality of damping teeth and the rotating groove.

2. A rotation damper according to claim 1, characterized in that: A sealing ring is formed on the outer side of the left end of the shaft core, a first annular sealing groove is formed on the inner edge of the left end of the rotating groove, and the sealing ring is installed in the first annular sealing groove with a clearance fit.

3. A rotation damper according to claim 2, characterized in that: The cross section of the first annular sealing groove is a semicircular arc structure.

4. A rotation damper according to claim 2, characterized in that: The left end of the shaft core extends out of the rotating groove, a clamping block is formed on the left end of the shaft core, a positioning convex edge is formed on the outer side of the shell, and a rotating shaft is integrally formed in the middle of the right side of the shell.

5. A rotation damper according to claim 4, characterized in that: The sealing ring is located between the clamping block and the plurality of damping teeth.

6. A rotation damper according to any one of claims 2 to 5, characterized in that: The damping oil filling is installed on the right side of the sealing ring and between a plurality of damping teeth and the rotating groove.

7. A rotation damper according to any one of claims 2 to 5, characterized in that: A second annular sealing groove is formed on the outer side of the left end of the shaft core, and the second annular sealing groove is located between the left ends of the plurality of damping teeth and the sealing ring.

8. A rotation damper according to claim 7, characterized in that: A rubber ring is sleeved and installed in the second annular sealing groove, and the outer edge of the rubber ring abuts against the rotating groove.

9. A rotation damper according to claim 8, characterized in that: The cross section of the second annular sealing groove is a semicircular arc structure.

10. A rotation damper according to any one of claims 8 or 9, characterized in that: The damping oil is filled and installed on the right side of the rubber ring and between the plurality of damping teeth and the rotating groove.

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