CN113339668A - Fixing device for computer camera - Google Patents

Fixing device for computer camera Download PDF

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Publication number
CN113339668A
CN113339668A CN202110695836.8A CN202110695836A CN113339668A CN 113339668 A CN113339668 A CN 113339668A CN 202110695836 A CN202110695836 A CN 202110695836A CN 113339668 A CN113339668 A CN 113339668A
Authority
CN
China
Prior art keywords
seat
damping
cylinder
fixing device
mounting seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202110695836.8A
Other languages
Chinese (zh)
Inventor
张珺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tangshan Normal University
Original Assignee
Tangshan Normal University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tangshan Normal University filed Critical Tangshan Normal University
Priority to CN202110695836.8A priority Critical patent/CN113339668A/en
Publication of CN113339668A publication Critical patent/CN113339668A/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/22—Undercarriages with or without wheels with approximately constant height, e.g. with constant length of column or of legs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/12—Fluid damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/026—Springs wound- or coil-like

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention is suitable for the technical field of computer equipment, and provides a fixing device for a computer camera; the method comprises the following steps: a fixed seat and a mounting seat; the mounting seat is installed in the fixing seat in a damping mode and used for mounting the camera; the periphery of the mounting seat is mounted inside the fixed seat through damping parts, wherein a plurality of damping parts are abutted against the mounting seat; the shock attenuation part includes a plurality of sliding sleeves that connecting seat and symmetry set up, is provided with second damper between two sliding sleeves that the symmetry set up, and a plurality of sliding sleeves are installed on the fixing base through first damper. The damping parts around the mounting seat can be used for damping, the phenomenon that the damping parts can only be used for damping in the vertical direction in the prior art is avoided, the sliding sleeve is arranged to achieve multi-stage damping, the damping is improved, the damping parts are arranged around the mounting seat, accordingly, the damping function can be achieved around the mounting seat, and the damping result is further guaranteed.

Description

Fixing device for computer camera
Technical Field
The invention relates to the technical field of computer equipment, in particular to a fixing device for a computer camera.
Background
The camera is also called a computer camera, a computer eye, an electronic eye and the like, is a video input device, and is widely applied to aspects such as video conferences, telemedicine, real-time monitoring and the like. The computer camera is a device which is convenient for the conversation and communication with images and sound on the network.
The computer camera is installed on a computer through a fixing device, the camera belongs to an electronic element, vibration can be received in the using process, the service life of the computer camera can be influenced by the vibration, the existing fixing device has a damping structure, but the damping direction of the existing fixing device is single, and the requirement cannot be met, so that the technical problem is solved by the fixing device for the computer camera.
Disclosure of Invention
The present invention is directed to a fixing device for a computer camera, so as to solve the problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a fixing device for a computer camera, comprising: a fixed seat and a mounting seat;
the mounting seat is installed in the fixing seat in a damping mode and used for mounting the camera;
the periphery of the mounting seat is mounted inside the fixed seat through damping parts, wherein a plurality of damping parts are abutted against the mounting seat;
the shock attenuation part includes a plurality of sliding sleeves that connecting seat and symmetry set up, is provided with second damper between two sliding sleeves that the symmetry set up, and a plurality of sliding sleeves are installed on the fixing base through first damper.
As a further scheme of the invention: the connecting rod both ends are installed on sliding sleeve and connecting seat respectively in the rotation, the connecting seat is contradicted on the mount pad.
As a still further scheme of the invention: the sliding sleeve is sleeved on the supporting seat in a sliding mode, the supporting seat is fixedly installed on the fixing seat, and the sliding sleeve is elastically installed on the supporting seat through the first elastic piece.
As a still further scheme of the invention: the first damping mechanism comprises an elastic support, and the sliding sleeve is arranged on the fixed seat through the elastic support; the elastic support is fixedly arranged on the fixed seat.
As a still further scheme of the invention: the second damping mechanism comprises a cylinder sleeve fixedly mounted on a fixing seat, two linkage cavities are arranged in the cylinder sleeve in a sliding mode, two ends of each linkage cavity are connected to two sliding sleeves symmetrically arranged, two linkage cavities are formed in the first piston and the inner portion of the cylinder sleeve in a surrounding mode, a first matching cylinder communicated with the linkage cavities in the first matching cylinder is arranged on the cylinder sleeve, a second piston is arranged in the first matching cylinder in a sliding mode, and a transmission medium is filled in the linkage cavities.
As a still further scheme of the invention: the second piston is installed inside the first matching cylinder through the second elastic piece, and two ends of the first matching cylinder are fixedly installed on the second piston and the first matching cylinder respectively.
As a still further scheme of the invention: and a second matching cylinder is further arranged on the cylinder sleeve and is communicated with the inside of the linkage cavity, and the second matching cylinders on the damping parts on two sides of the mounting seat are communicated through a flow passage.
As a still further scheme of the invention: and the first matching cylinder is communicated with the linkage cavity through a throttling hole.
As a still further scheme of the invention: the orifice is a bi-directional orifice.
As a still further scheme of the invention: the first matching cylinder is connected to the connecting seat through a third elastic piece.
Compared with the prior art, the invention has the beneficial effects that: through set up all around at the mount pad that shock attenuation part installs inside the fixing base, because shock attenuation part contradicts on the mount pad, then shock attenuation part is not connected on the mount pad, receive each direction vibration in-process when the mount pad, shock attenuation part homoenergetic all around can be to it carry out the shock attenuation, it can only carry out vertical direction and carry out the shock attenuation usually to avoid prior art, be provided with the sliding sleeve simultaneously and realize multistage shock attenuation, improve on the shock attenuation, all be provided with shock attenuation part around the mount pad, so and then make the mount pad all around homoenergetic realize shock-absorbing function, further assurance shock attenuation result.
Drawings
Fig. 1 is a schematic structural view of a fixing device for a computer camera.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic structural diagram of a cylinder liner in a fixing device for a computer camera.
In the figure: the device comprises a fixed seat-1, a damping part-2, a mounting seat-3, a connecting seat-4, a connecting rod-5, a sliding sleeve-6, a supporting seat-7, a first elastic part-8, a first piston-9, a cylinder sleeve-10, a linkage cavity-11, a throttling hole-12, a first matching cylinder-13, a second elastic part-14, a third elastic part-15, a flow channel-16, a second matching cylinder-18 and a second piston-19.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, in embodiment 1 of the present invention, a structure diagram of a fixing device for a computer camera provided in an embodiment of the present invention includes: a fixed seat 1 and a mounting seat 3;
the mounting seat 3 is installed inside the fixing seat 1 in a damping mode, and the mounting seat 3 is used for mounting a camera;
specifically, the periphery of the mounting base 3 is mounted inside the fixed base 1 through the shock absorption parts 2, wherein the shock absorption parts 2 are abutted against the mounting base 3;
the shock attenuation part 2 includes a plurality of sliding sleeves 6 that connecting seat 4 and symmetry set up, is provided with second damper between two sliding sleeves 6 that the symmetry set up, and a plurality of sliding sleeves 6 are installed on fixing base 1 through first damper.
It is specific, install inside fixing base 1 through set up damping part 2 around mount pad 3, because damping part 2 contradicts on mount pad 3, then damping part 2 is not connected on mount pad 3, receive each direction vibration in-process when mount pad 3, damping part 2 all around can be cushioned to it, avoid prior art to only can carry out vertical direction and cushion usually, be provided with sliding sleeve 6 simultaneously and realize multistage shock attenuation, improve in the shock attenuation, all be provided with damping part 2 around mount pad 3, so and make mount pad 3 all around all can realize shock-absorbing function, further assurance shock-absorbing result.
Example 2
Referring to fig. 1 to 3, the main difference between the present embodiment 2 and the present embodiment 1 is that two ends of the connecting rod 5 are respectively rotatably mounted on the sliding sleeve 6 and the connecting seat 4. The connecting seat 4 is abutted against the mounting seat 3. Connecting rod 5 both ends can be installed on sliding sleeve 6 and connecting seat 4 through articulated first damper can slide sleeve 6 install on fixing base 1 through first elastic component 8, and is specific, 6 sliding sleeve covers of sliding sleeve are established on supporting seat 7, supporting seat 7 fixed mounting is on fixing base 1, sliding sleeve 6 is on supporting seat 7 through 8 elastic mounting of first elastic component. Further, the first elastic member 8 is elastically sleeved on the supporting seat 7, and two ends of the first elastic member are respectively and fixedly installed on the sliding sleeve 6 and the supporting seat 7. So and then realize that 6 elasticity of sliding sleeve set up on supporting seat 7, realize the one-level shock attenuation. The sliding sleeve 6 is sleeved on the supporting seat 7 in a sliding manner.
As another preferred embodiment of the present invention, the first damping mechanism includes an elastic support, and the sliding sleeve 6 is mounted on the fixed seat 1 through the elastic support; the elastic support is fixedly arranged on the fixed seat 1. Thus, primary shock absorption is realized.
Two sliding sleeves 6 that the symmetry set up can be connected through the elastic component A, so realized that first damper cooperates with second damper and realizes the shock attenuation.
The sliding sleeve 6 is not less than 2 damping parts.
Specifically, the second damping mechanism comprises a cylinder sleeve 10 fixedly mounted on the fixed seat 1, two linkage cavities 11 are slidably arranged inside the cylinder sleeve 10, two ends of each of the two linkage cavities 11 are respectively connected to two sliding sleeves 6 symmetrically arranged, two first pistons 9 and the interior of the cylinder sleeve 10 enclose the linkage cavities 11, a first matching cylinder 13 communicated with the interior linkage cavity 11 of the cylinder sleeve 10 is arranged on the cylinder sleeve 10, a second piston 19 is elastically arranged inside the first matching cylinder 13, the second piston 19 is slidably arranged inside the first matching cylinder 13, and a transmission medium is filled inside the linkage cavity 11; when the sliding sleeve 6 is subjected to the vibration transmitted by the connecting seat 4, the vibration is transmitted to the linkage cavity 11 inside the throttling hole 12 through the first piston 9, and then the vibration energy is absorbed through the second piston 19.
The transmission medium is hydraulic oil or water.
As a preferred embodiment of the present invention, in order to elastically arrange the second piston 19 inside the first engaging cylinder 13, the second piston 19 is installed inside the first engaging cylinder 13 by the second elastic member 14, and both ends of the first engaging cylinder 13 are fixedly installed on the second piston 19 and the first engaging cylinder 13, respectively, so that the second piston 19 is elastically installed.
The cylinder sleeve 10 is further provided with a second matching cylinder 18, the second matching cylinder 18 is communicated with the inside of the linkage cavity 11, the second matching cylinders 18 on the damping parts 2 at two sides of the installation base 3 are communicated through a flow passage 16, so that when one side of the installation base 3 is extruded, the sliding sleeves 6 at two sides are driven by the connecting rod 5 to slide outwards to drive the two first pistons 9 in the cylinder sleeve 10 to be away from each other, at the moment, the second matching cylinder 18 sucks the transmission medium of the linkage cavity 11 in the damping part 2 at the other side into the linkage cavity 11 at the extruded side through the flow passage 16, so that the two first pistons 9 at the other side are close to each other, the two sliding sleeves 6 at the other side are close to each other, the connecting seat 4 at the other side is close to the installation base 3, the connecting seat 4 at the other side can be always abutted against the installation base 3, and the periphery of the installation base 3 can be always abutted against the damping parts 2, thereby ensuring the stability of shock absorption.
The first matching cylinder 13 is communicated with the linkage cavity 11 through the throttle hole 12, auxiliary damping is carried out through the throttle hole 12, the damping effect is guaranteed, and vibration energy is absorbed through the throttle hole 12. The orifice 12 is a double orifice.
In order to further promote the shock attenuation effect, consequently connect on the first cooperation jar 13 on connecting seat 4 through third elastic component 15, so and then realize supplementary shock attenuation, further assurance shock attenuation effect.
As a preferred embodiment of the present invention, the first elastic member 8, the second elastic member 14 and the third elastic member 15 may be made of a coil spring or a rubber spring, and may be supported by other springs.
The working principle of the invention is as follows:
the damping parts 2 are arranged on the periphery of the mounting seat 3, and the damping parts 2 abut against the mounting seat 3, so that multi-direction damping is realized; when one side of the mounting seat 3 is extruded, the sliding sleeves 6 on the two sides are driven to slide outwards through the connecting rod 5, two first pistons 9 in the cylinder sleeve 10 are driven to be away from each other, at the moment, the second matching cylinder 18 sucks a transmission medium in the linkage cavity 11 in the damping part 2 on the other side into the linkage cavity 11 on the extruded side through the flow channel 16, so that the two first pistons 9 on the other side are close to each other, the two sliding sleeves 6 on the other side are close to each other, the connecting seat 4 on the other side is close to the mounting seat 3, the connecting seat 4 on the other side can be always abutted against the mounting seat 3, the periphery of the mounting seat 3 can be always abutted against the damping part 2, and the damping stability is ensured; the damping part 2 comprises a first elastic part 8, a third elastic part 15, a second elastic part 14, a throttling hole 12 and the like to realize multi-stage damping, and meanwhile, the damping parts 2 on the corresponding sides are in linkage fit, so that the damping effect is further ensured.
In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, in the description of the present invention, "a plurality" means two or more unless otherwise specified. A feature defined as "first," "second," etc. may explicitly or implicitly include one or more of the feature.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A fixing device for a computer camera is characterized by comprising: a fixed seat and a mounting seat;
the mounting seat is installed in the fixing seat in a damping mode and used for mounting the camera;
the periphery of the mounting seat is mounted inside the fixed seat through damping parts, wherein a plurality of damping parts are abutted against the mounting seat;
the shock attenuation part includes a plurality of sliding sleeves that connecting seat and symmetry set up, is provided with second damper between two sliding sleeves that the symmetry set up, and a plurality of sliding sleeves are installed on the fixing base through first damper.
2. The computer camera fixing device of claim 1, wherein two ends of the connecting rod are rotatably mounted on the sliding sleeve and the connecting seat, respectively, and the connecting seat abuts against the mounting seat.
3. The fixing device for a computer camera according to claim 2, wherein the sliding sleeve is slidably fitted over the supporting seat, the supporting seat is fixedly mounted on the fixing seat, and the sliding sleeve is elastically mounted on the supporting seat through the first elastic member.
4. The fixing device for the computer camera according to claim 3, wherein the first shock absorbing mechanism comprises an elastic support, and the sliding sleeve is mounted on the fixing seat through the elastic support; the elastic support is fixedly arranged on the fixed seat.
5. The fixing device for the computer camera according to any one of claims 2 to 3, wherein the second damping mechanism includes a cylinder sleeve fixedly mounted on the fixing base, two linkage cavities are slidably disposed inside the cylinder sleeve, two ends of the two linkage cavities are respectively connected to the two symmetrically disposed slide sleeves, two first pistons and the inside of the cylinder sleeve enclose the linkage cavity, a first fitting cylinder communicated with the linkage cavity inside the cylinder sleeve is disposed on the cylinder sleeve, a second piston is elastically disposed inside the first fitting cylinder, the second piston is slidably disposed inside the first fitting cylinder, and a transmission medium is filled inside the linkage cavity.
6. The fixing device for a computer camera according to claim 5, wherein the second piston is installed inside a first fitting cylinder through a second elastic member, and both ends of the first fitting cylinder are fixedly installed on the second piston and the first fitting cylinder, respectively.
7. The fixing device for the computer camera according to claim 6, wherein a second engaging cylinder is further provided on the cylinder sleeve, the second engaging cylinder is communicated with the inside of the linkage cavity, and the second engaging cylinders on the shock absorbing members on both sides of the mounting seat are communicated with each other through a flow passage.
8. The computer camera fixing device of claim 7, wherein the first engagement cylinder and the linkage chamber communicate with each other through an orifice.
9. The computer camera fixture of claim 8, wherein the orifice is a bi-directional orifice.
10. The computer camera fixing device of claim 5, wherein the first engagement cylinder is connected to the connecting base by a third elastic member.
CN202110695836.8A 2021-06-23 2021-06-23 Fixing device for computer camera Withdrawn CN113339668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110695836.8A CN113339668A (en) 2021-06-23 2021-06-23 Fixing device for computer camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110695836.8A CN113339668A (en) 2021-06-23 2021-06-23 Fixing device for computer camera

Publications (1)

Publication Number Publication Date
CN113339668A true CN113339668A (en) 2021-09-03

Family

ID=77477946

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110695836.8A Withdrawn CN113339668A (en) 2021-06-23 2021-06-23 Fixing device for computer camera

Country Status (1)

Country Link
CN (1) CN113339668A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114261346A (en) * 2021-12-31 2022-04-01 南京华脉汽车部件制造有限公司 Automobile support with good elastic function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114261346A (en) * 2021-12-31 2022-04-01 南京华脉汽车部件制造有限公司 Automobile support with good elastic function
CN114261346B (en) * 2021-12-31 2024-02-13 南京华脉汽车部件制造有限公司 Automobile support with good elasticity function

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Application publication date: 20210903