CN112361133A - Support arm for display - Google Patents
Support arm for display Download PDFInfo
- Publication number
- CN112361133A CN112361133A CN202011053928.8A CN202011053928A CN112361133A CN 112361133 A CN112361133 A CN 112361133A CN 202011053928 A CN202011053928 A CN 202011053928A CN 112361133 A CN112361133 A CN 112361133A
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- China
- Prior art keywords
- support
- sleeve
- pin shaft
- reinforcing
- support arm
- 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.)
- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 37
- 238000013016 damping Methods 0.000 claims description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000005299 abrasion Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Images
Classifications
-
- 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
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
-
- 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
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/10—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a horizontal axis
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
An arm for a display, comprising: the device comprises a first support, a second support, an arm component and a pressing synchronization mechanism, wherein two ends of the arm component are respectively connected with the first support and the second support, and the pressing synchronization mechanism is arranged on the first support. The advantages are that: the linear expansion and the pitching clamping can be realized simultaneously, the gap of each joint is effectively controlled, the goal of no sinking is achieved, and the lightweight is realized to the greatest extent on the premise of meeting the strength requirement.
Description
Technical Field
The invention relates to the technical field of computer machinery, in particular to a support arm for a display.
Background
In a new situation, a user puts higher requirements on the functionality of the display, and in order to meet the requirements on daily maintenance and convenience in use, the display does not need to realize sinking-free linear telescopic motion and meets the requirement on light weight;
therefore, how to solve the above problems is a problem to be solved.
Disclosure of Invention
The invention provides a support arm for a display, aiming at overcoming the technical defects, realizing the linear expansion and pitching clamping of the support arm, effectively controlling the gap of each joint, achieving the aim of no sinking and realizing the light weight to the maximum extent on the premise of meeting the strength requirement.
In order to achieve the above purpose, the invention provides the following technical scheme:
a support arm for a display comprises a first support, a second support, a support arm assembly and a pressing synchronization mechanism, wherein two ends of the support arm assembly are respectively connected with the first support and the second support, and the pressing synchronization mechanism is arranged on the first support;
the pressing synchronization mechanism comprises two first pin shafts, a reinforcing plate provided with two through holes, two first locking nuts and two gears in meshing connection, the upper parts of the first pin shafts are connected with one end of the support arm assembly, the two through holes of the reinforcing plate respectively penetrate through the two first pin shafts, so that the bottom end face of the reinforcing plate is in contact with the upper end face of the support arm assembly, and the reinforcing plate is pressed and fixed on the support arm assembly through the first locking nuts penetrating through the first pin shafts; the gear and the lower part of the first pin shaft are arranged in the cavity of the first support, the gear is concentrically connected with the first pin shaft, one end parts of two left support arms of the support arm assembly are respectively and rotationally connected with the two first pin shafts, and the first pin shaft and the gear are sequentially driven to rotate through the movement of the support arm assembly, so that the synchronous stretching of the support arm assembly is realized.
Furthermore, the pressing synchronization mechanism also comprises two limiting sleeves positioned in the cavity, and each first pin shaft is sleeved with one limiting sleeve and is in gapless connection with the limiting sleeve; the limiting sleeve is positioned on the upper part of the gear.
Further, the arm component still includes two right support arms, two second round pin axles, two bullet pins, two direction steel bushings, two the left side support arm is respectively through the second round pin axle is connected with two right support arms, two the bullet pin is located two respectively be close to on the right side support arm the one end of left side support arm, two the direction steel bushing is located two respectively be close to on the left side support arm the one end of right side support arm makes the bullet pin inserts guide sleeve is in order to realize the spacing locking of arm component.
Furthermore, the arm component further comprises two first reinforcing steel sleeves connected with the left support arm respectively, and the first reinforcing steel sleeves are sleeved outside the first pin shafts and located below the reinforcing plate and above the accommodating cavity.
Further, the device also comprises a pitching adjusting structure arranged on the second support;
the pitching adjusting structure comprises two supporting plates which are arranged in parallel and vertically fixed on the second support, a U-shaped sleeve, a third pin shaft, a reinforcing sleeve, two second locking nuts, two metal gaskets and four damping pads, through holes for the third pin shaft and the reinforcing sleeve to pass through are formed in two long edges of the U-shaped sleeve and the supporting plates, the third pin shaft and the reinforcing sleeve pass through the through holes to connect the supporting plates and the U-shaped sleeve, the third pin shaft and the reinforcing sleeve are locked and fixed through the second locking nuts, and the third pin shaft and the reinforcing sleeve are arranged in parallel;
the third round pin axle all overlap on the reinforcement sleeve be equipped with the metal gasket the damping pad, just the metal gasket sets up second lock nut with between the long limit of U type sleeve, the damping pad is located the telescopic long limit of U type with between the backup pad.
Furthermore, the U-shaped sleeve is connected with the right support arm through a fourth pin shaft, and a second reinforcing steel sleeve is sleeved outside the fourth pin shaft.
The invention relates to a support arm for a display, which has the advantages that:
(1) due to the specific structural design of the pressing synchronous mechanism, the gap of the support arm after bearing is eliminated, the sinking amount is reduced, and linear extension is realized;
(2) the left support arm and the right support arm are both in an H-shaped hollow design, so that the rigidity and the strength are improved while the weight is reduced;
(3) the specific structural design of the support arm component realizes limiting and locking, and can reduce the abrasion of the pin shaft and the support arm when the support arm stretches;
(4) the specific structural design of the pitching adjusting structure can effectively prevent looseness, so that stable damping is formed; furthermore, the risk of deformation due to clamping can be reduced.
(5) The display support arm with the structure can simultaneously realize linear expansion and pitching clamping, effectively control the gap of each joint, achieve the aim of no sinking, and maximally realize light weight on the premise of meeting the strength requirement.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of a supporting arm for a display according to the present invention;
FIG. 2 is a schematic view of a side of the present invention with portions broken away;
FIG. 3 is a schematic cross-sectional view taken from the perspective A-A of FIG. 2 according to the present invention;
FIG. 4 is a schematic view, partly in section, of a top view structure of the present invention with portions of the structure removed;
FIG. 5 is a schematic view of a left arm;
FIG. 6 is a schematic longitudinal sectional view of the right arm;
FIG. 7 is a schematic cross-sectional view taken from the perspective of B-B in FIG. 6;
wherein:
a first support 1 and a second support 2;
the support arm assembly 3, the left support arm 3-1, the right support arm 3-2, the second pin shaft 3-3, the elastic pin 3-4, the guide steel sleeve 3-5 and the first reinforcing steel sleeve 3-6;
the device comprises a pressing synchronization mechanism 4, a first pin shaft 4-1, a reinforcing plate 4-2, a first locking nut 4-3, a gear 4-4 and a limiting sleeve 4-5;
the device comprises a pitching adjusting structure 5, a supporting plate 5-1, a U-shaped sleeve 5-2, a third pin shaft 5-3, a reinforcing sleeve 5-4, a second locking nut 5-5, a metal gasket 5-6, a damping pad 5-7, a fourth pin shaft 5-8 and a second reinforcing steel sleeve 5-9.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
According to the support arm for the display provided in fig. 1, 2 and 4, the support arm comprises a first support 1, a second support 2, an arm assembly 3 and a pressing synchronization mechanism 4, wherein two ends of the arm assembly 3 are respectively connected with the first support 1 and the second support 2, and the pressing synchronization mechanism 4 is arranged on the first support 1;
the pressing synchronization mechanism 4 comprises two first pin shafts 4-1, a reinforcing plate 4-2 provided with two through holes, two first locking nuts 4-3 and two gears 4-4 in meshed connection, the upper part of each first pin shaft 4-1 is connected with one end of the support arm component 3, the two through holes of the reinforcing plate 4-2 respectively penetrate through the two first pin shafts 4-1, so that the bottom end face of the reinforcing plate 4-2 is in contact with the upper end face of the support arm component 3, the first locking nuts 4-3 penetrate through the first pin shafts 4-1 to realize pressing and fixing of the reinforcing plate 4-2 on the support arm component 3, and gaps after support arm bearing are eliminated; the gear 4-4 and the lower part of the first pin shaft 4-1 are both arranged in the cavity of the first support 1, the gear 4-4 is concentrically connected with the first pin shaft 4-1, one end parts of two left support arms 3-1 of the support arm component 3 are respectively and rotatably connected with the two first pin shafts 4-1, and the first pin shaft 4-1 and the gear 4-4 are sequentially driven to rotate through the movement of the support arm component 3 so as to realize the synchronous extension and retraction of the support arm component 3;
in more detail, as shown in fig. 1, the first support 1 is composed of a vertical fixed plate and a base designed perpendicular to the vertical fixed plate, a cavity is formed in the base, and the reinforcing plate 4-2 is arranged on the base; the reinforcing plate 4-2 is composed of a fixed plate fixed on the vertical fixed plate and a transverse plate horizontally and vertically arranged with the fixed plate, and a triangular partition plate is further arranged on the transverse plate and used for separating the two first pin shafts 4-1.
In more detail, as shown in fig. 2, the pressing synchronization mechanism 4 further includes two limiting sleeves 4-5 located in the cavity, and each first pin 4-1 is sleeved with one limiting sleeve 4-5 and is in gapless connection therewith, so that a gap between the first pin and the support arm can be effectively eliminated, and the sinking amount can be reduced; the limiting sleeve 4-5 is positioned at the upper part of the gear 4-4.
In order to realize the limit locking of the support arm and reduce the abrasion of the support arm during the expansion and contraction, according to the figures 1, 2, 4-7, the support arm component 3 also comprises two right support arms 3-2, two second pin shafts 3-3, two elastic pins 3-4 and two guide steel sleeves 3-5, the two left support arms 3-1 are respectively connected with the two right support arms 3-2 through the second pin shafts 3-3, the two elastic pins 3-4 are respectively arranged at one ends, close to the left support arms 3-1, of the two right support arms 3-2, the two guide steel sleeves 3-5 are respectively arranged at one ends, close to the right support arms 3-2, of the two left support arms 3-1, so that the elastic pin 3-4 is inserted into the guide steel sleeve 3-5 to realize the limit locking of the support arm component 3. Under the synchronous rotation of the two gears 4-4, the left and right support arms 3-2 in the support arm component 3 keep 1:1 telescopic amount, thereby realizing linear telescopic;
in more detail, as shown in fig. 6 and 7, the left support arm 3-1 and the right support arm 3-2 both adopt an H-shaped hollow design, so that the rigidity and strength are improved while the weight is reduced, and the guide steel sleeve 3-5 realizes the limiting and locking through the action of the elastic pin 3-4 after the support arm is stretched to the designated position and moved.
Specifically, as shown in fig. 2, the support arm assembly 3 further includes two first reinforcing steel sleeves 3-6 respectively connected to the two left support arms 3-1, and the first reinforcing steel sleeves 3-6 are sleeved outside the first pin shafts 4-1 and located below the reinforcing plate 4-2 and above the accommodating cavity.
In order to realize the pitching motion of the support arm, the invention also comprises a pitching adjusting structure 5 arranged on the second support 2; as shown in fig. 1-4, the pitch adjusting structure 5 includes two support plates 5-1, a U-shaped sleeve 5-2, a third pin 5-3, a reinforcing sleeve 5-4, two second locking nuts 5-5, two metal gaskets 5-6, and four damping pads 5-7, which are disposed in parallel and vertically fixed to the second support 2, through holes for the third pin 5-3 and the reinforcing sleeve 5-4 to pass through are respectively formed on two long sides of the U-shaped sleeve 5-2 and the support plate 5-1, the third pin 5-3 and the reinforcing sleeve 5-4 pass through the through holes to connect the support plate 5-1 and the U-shaped sleeve 5-2, and the third pin 5-3, the U-3, and the four damping pads are realized by the second locking nuts 5-5, The reinforcing sleeve 5-4 is locked and fixed, and the third pin shaft 5-3 and the reinforcing sleeve 5-4 are arranged in parallel;
the third pin shaft 5-3 and the reinforcing sleeve 5-4 are respectively sleeved with the metal gasket 5-6 and the damping pad 5-7, the metal gasket 5-6 is arranged between the second locking nut 5-5 and the long edge of the U-shaped sleeve 5-2, and the damping pad 5-7 is arranged between the long edge of the U-shaped sleeve 5-2 and the supporting plate 5-1;
in the pitching adjusting structure 5, the damping of the damping pad 5-7 on the third pin shaft 5-3 can be controlled by adjusting the clamping force of the second lock nut 5-5 and the third pin shaft 5-3, and the second lock nut 5-5 can effectively prevent looseness so as to form stable damping; the reinforcing sleeve 5-4 is designed to resist deformation of the second support 2 due to clamping.
In more detail, as shown in fig. 1-4, the U-shaped sleeve 5-2 is connected with the right support arm 3-2 through a fourth pin 5-8, and a second reinforcing steel sleeve 5-9 is sleeved outside the fourth pin 5-8; the first reinforcing steel sleeve 3-6 and the second reinforcing steel sleeve 5-9 are respectively riveted with the left support arm 3-1 and the right support arm 3-2, so that abrasion between the first pin shaft 4-1 and the left support arm 3-1 and between the fourth pin shaft 5-8 and the right support arm 3-2 when the support arms are stretched can be reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A mounting arm for a display, comprising: the device comprises a first support (1), a second support (2), an arm component (3) and a pressing synchronization mechanism (4), wherein two ends of the arm component (3) are respectively connected with the first support (1) and the second support (2), and the pressing synchronization mechanism (4) is arranged on the first support (1);
the pressing synchronization mechanism (4) comprises two first pin shafts (4-1), a reinforcing plate (4-2) provided with two through holes, two first locking nuts (4-3) and two gears (4-4) in meshing connection, the upper portion of each first pin shaft (4-1) is connected with one end of the support arm assembly (3), the two through holes of each reinforcing plate (4-2) penetrate through the two first pin shafts (4-1) respectively, so that the bottom end face of each reinforcing plate (4-2) is in contact with the upper end face of the support arm assembly (3), and the first locking nuts (4-3) penetrate through the first pin shafts (4-1) to press and fix the support arm assembly (3) by the reinforcing plates (4-2); the gear (4-4) and the lower part of the first pin shaft (4-1) are arranged in the cavity of the first support (1), the gear (4-4) is concentrically connected with the first pin shaft (4-1), one end parts of two left support arms (3-1) of the support arm assembly (3) are respectively rotatably connected with the two first pin shafts (4-1), and the first pin shaft (4-1) and the gear (4-4) are sequentially driven to rotate through the movement of the support arm assembly (3) so as to realize the synchronous extension and retraction of the support arm assembly (3).
2. A mounting arm for a display device according to claim 1, wherein: the pressing synchronization mechanism (4) further comprises two limiting sleeves (4-5) positioned in the cavity, and each first pin shaft (4-1) is sleeved with one limiting sleeve (4-5) in a non-clearance connection manner; the limiting sleeve (4-5) is positioned at the upper part of the gear (4-4).
3. A mounting arm for a display device according to claim 1, wherein: the support arm component (3) also comprises two right support arms (3-1), two second pin shafts (3-3), two elastic pins (3-4) and two guide steel sleeves (3-5), the two left support arms (3-1) are respectively connected with the two right support arms (3-1) through the second pin shafts (3-3), the two elastic pins (3-4) are respectively arranged at one ends, close to the left support arms (3-1), of the two right support arms (3-1), the two guide steel sleeves (3-5) are respectively arranged at one ends, close to the right support arms (3-1), of the two left support arms (3-1), so that the elastic pin (3-4) is inserted into the guide steel sleeve (3-5) to realize the limit locking of the support arm component (3).
4. A mounting arm for a display device according to claim 1, wherein: the support arm assembly (3) further comprises two first reinforcing steel sleeves (3-6) respectively connected with the two left support arms (3-1), and the first reinforcing steel sleeves (3-6) are sleeved outside the first pin shafts (4-1), are positioned below the reinforcing plates (4-2) and above the accommodating cavity.
5. A mounting arm for a display device according to claim 1, wherein: the device also comprises a pitching adjusting structure 5 arranged on the second support (2);
wherein the pitching adjusting structure 5 comprises two support plates (5-1) which are arranged in parallel and vertically fixed on the second support (2), a U-shaped sleeve (5-2), a third pin shaft (5-3), a reinforcing sleeve (5-4), two second locking nuts (5-5), two metal gaskets (5-6) and four damping pads (5-7), through holes for the third pin shaft (5-3) and the reinforcing sleeve (5-4) to pass through are formed in two long sides of the U-shaped sleeve (5-2) and the support plate (5-1), the third pin shaft (5-3) and the reinforcing sleeve (5-4) pass through the through holes to connect the support plates (5-1) and the U-shaped sleeve (5-2), the third pin shaft (5-3) and the reinforcing sleeve (5-4) are locked and fixed through the second locking nut (5-5), and the third pin shaft (5-3) and the reinforcing sleeve (5-4) are arranged in parallel;
the third pin shaft (5-3) and the reinforcing sleeve (5-4) are all sleeved with the metal gasket (5-6) and the damping pad (5-7), the metal gasket (5-6) is arranged between the second locking nut (5-5) and the long edge of the U-shaped sleeve (5-2), and the damping pad (5-7) is arranged between the long edge of the U-shaped sleeve (5-2) and the supporting plate (5-1).
6. An arm for a display as claimed in claim 5, wherein: the U-shaped sleeve (5-2) is connected with the right support arm (3-1) through a fourth pin shaft (5-8), and a second reinforcing steel sleeve (5-9) is sleeved outside the fourth pin shaft (5-8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011053928.8A CN112361133A (en) | 2020-09-29 | 2020-09-29 | Support arm for display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011053928.8A CN112361133A (en) | 2020-09-29 | 2020-09-29 | Support arm for display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112361133A true CN112361133A (en) | 2021-02-12 |
Family
ID=74506494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011053928.8A Pending CN112361133A (en) | 2020-09-29 | 2020-09-29 | Support arm for display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112361133A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080185487A1 (en) * | 2007-02-02 | 2008-08-07 | Beger Lawrence J | Power Tilt |
| CN201359669Y (en) * | 2009-03-05 | 2009-12-09 | 余姚市宇达实业有限公司 | Flat panel display installation holder |
| CN201801140U (en) * | 2010-09-01 | 2011-04-20 | 江苏天奇物流***工程股份有限公司 | Adjustable duplex chain tensioning mechanism |
| CN102829309A (en) * | 2012-06-25 | 2012-12-19 | 丁奇锴 | Double-mode adjusting television hanging bracket |
| CN204459691U (en) * | 2015-02-13 | 2015-07-08 | 曹进 | The multi-faceted mounting bracket of a kind of TV |
| US20190086022A1 (en) * | 2016-03-07 | 2019-03-21 | Southco, Inc. | Display support arm assembly for mounting a display |
| US20190390817A1 (en) * | 2018-06-26 | 2019-12-26 | Xubo Pei | Display wall mount |
| CN210113458U (en) * | 2019-06-12 | 2020-02-25 | 湖北旭兴达科技有限公司 | Mounting bracket for fixing security camera |
-
2020
- 2020-09-29 CN CN202011053928.8A patent/CN112361133A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080185487A1 (en) * | 2007-02-02 | 2008-08-07 | Beger Lawrence J | Power Tilt |
| CN201359669Y (en) * | 2009-03-05 | 2009-12-09 | 余姚市宇达实业有限公司 | Flat panel display installation holder |
| CN201801140U (en) * | 2010-09-01 | 2011-04-20 | 江苏天奇物流***工程股份有限公司 | Adjustable duplex chain tensioning mechanism |
| CN102829309A (en) * | 2012-06-25 | 2012-12-19 | 丁奇锴 | Double-mode adjusting television hanging bracket |
| CN204459691U (en) * | 2015-02-13 | 2015-07-08 | 曹进 | The multi-faceted mounting bracket of a kind of TV |
| US20190086022A1 (en) * | 2016-03-07 | 2019-03-21 | Southco, Inc. | Display support arm assembly for mounting a display |
| US20190390817A1 (en) * | 2018-06-26 | 2019-12-26 | Xubo Pei | Display wall mount |
| CN210113458U (en) * | 2019-06-12 | 2020-02-25 | 湖北旭兴达科技有限公司 | Mounting bracket for fixing security camera |
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Application publication date: 20210212 |