CN220556125U - Arm structure for display and display bracket - Google Patents
Arm structure for display and display bracket Download PDFInfo
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- CN220556125U CN220556125U CN202322229757.5U CN202322229757U CN220556125U CN 220556125 U CN220556125 U CN 220556125U CN 202322229757 U CN202322229757 U CN 202322229757U CN 220556125 U CN220556125 U CN 220556125U
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- 238000004146 energy storage Methods 0.000 claims abstract description 100
- 238000005381 potential energy Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 4
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- 230000004048 modification Effects 0.000 description 2
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Abstract
The utility model provides an arm body structure for a display and a display bracket. The arm structure for a display includes: a first connector; a second connector for supporting the display; the first end of the connecting rod structure is hinged with the first connecting piece, and the second end of the connecting rod structure is hinged with the second connecting piece; a balancing structure including a plurality of energy storage elements arranged in an array disposed between the first and second connectors to cause the display to hover; and the adjusting structure is partially arranged on the first connecting piece and is used for adjusting the elastic potential energy of the plurality of energy storage elements arranged in a arraying way so as to adapt to displays with different weights. The technical scheme of the utility model can be suitable for displays with different gravities, and has wider application range.
Description
Technical Field
The utility model relates to the field of display supports, in particular to an arm body structure for a display and a display support.
Background
In a display stand lift arm assembly known to the inventors, the display lift arm assembly is comprised of a link and a counterweight that are made to provide non-tilting movement of the display at the ends of the support arms while providing a balance that is equal to the potential energy change of the display. The display bracket lifting arm assembly cannot be suitable for displays with different weights due to the limitation of the structure of the display bracket lifting arm assembly.
Disclosure of Invention
The utility model mainly aims to provide an arm body structure for a display and a display bracket, wherein the arm body structure for the display can realize hovering of the display at different height positions and can be suitable for displays with different weights.
In order to achieve the above object, according to one aspect of the present utility model, there is provided an arm structure for a display, comprising: a first connector; a second connector for supporting the display; the first end of the connecting rod structure is hinged with the first connecting piece, and the second end of the connecting rod structure is hinged with the second connecting piece; a balancing structure including a plurality of energy storage elements arranged in an array disposed between the first and second connectors to cause the display to hover; and the adjusting structure is partially arranged on the first connecting piece and is used for adjusting the elastic potential energy of the plurality of energy storage elements arranged in a arraying way so as to adapt to displays with different weights.
Further, the adjusting structure includes: the adjusting piece is arranged on the first connecting piece in a penetrating way and is rotationally connected with the first connecting piece; the sliding part is arranged on the periphery of the adjusting part, the adjusting part is in threaded fit with the sliding part, one end of at least one energy storage element is fixedly connected with the sliding part, the adjusting part is screwed, and the sliding part can move along the axial direction of the adjusting part so as to adjust the telescopic length of the energy storage element.
Further, the adjusting structure further comprises a linkage piece, the linkage piece is connected with the energy storage elements, and the adjusting piece is arranged on the linkage piece in a penetrating mode, so that linkage adjustment of the plurality of energy storage elements is achieved through the linkage piece.
Further, the linkage piece comprises a connecting plate, the connecting plate is provided with an installation through hole for the adjusting piece to penetrate out, the sliding piece is positioned on one side of the connecting plate, one of the plurality of energy storage elements is connected with the sliding piece, and the rest of the plurality of energy storage elements are directly or indirectly connected with the connecting plate.
Further, the arm body structure for the display further comprises a mounting sleeve, the mounting sleeve is located on the periphery of the adjusting piece and rotatable around a preset axis relative to the first connecting piece, and the adjusting piece is rotatably arranged relative to the mounting sleeve, wherein an included angle is formed between the preset axis and the axis of the adjusting piece.
Further, the hinge points of the first ends of the plurality of energy storage elements are located on the same component or on different components.
Further, a first end of the energy storage element facing away from the adjustment structure is hinged with the second connection or the link structure, and a second end of the energy storage element facing towards the adjustment structure is pivotally connected with respect to the second connection.
Further, the plurality of energy storage elements extend along the first direction and are arranged along a direction forming an included angle with the first direction; or the plurality of energy storage elements are arranged along a first direction and a second direction forming an included angle with the first direction, wherein the first direction is a direction parallel to the expansion and contraction direction of the energy storage elements.
Further, the arm body structure for the display further comprises a shell and a side baffle, wherein the shell and the side baffle form an installation space, the first connecting piece, the second connecting piece, the connecting rod structure, the balance structure and the adjusting structure are positioned in the installation space, and the side baffle is positioned at the outer side of the connecting rod structure and is connected with the first connecting piece and the second connecting piece respectively; and/or be equipped with two pin joints on the first connecting piece, be equipped with two pin joints on the second connecting piece, the connecting rod structure includes: the first end of the first connecting rod is hinged with the first connecting piece through a hinge point C, and the second end of the first connecting rod is hinged with the second connecting piece through a hinge point A; the first end of the second connecting rod is hinged with the first connecting piece through a hinge point, and the second end of the second connecting rod is hinged with the second connecting piece through a hinge point B.
According to another aspect of the present utility model, there is provided a monitor stand comprising a stand and the above-described arm structure for a monitor rotatably connected to the stand.
By applying the technical scheme of the utility model, the elastic potential energy of the plurality of energy storage elements arranged in a arrayed manner can be converted into the gravitational potential energy of the display to be supported, so that the display hovers at different height positions; moreover, utilize adjusting structure can adjust energy storage element, and then can adjust the elastic potential energy of a plurality of energy storage element to can adapt to the display of different gravity, this arm body structure's application range is wider.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
fig. 1 is a schematic perspective view showing an embodiment of an arm structure for a display according to the present utility model;
FIG. 2 is a schematic view showing an internal structure of the arm structure for the display of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the arm structure for the display of FIG. 1 in a raised position;
FIG. 4 is a schematic cross-sectional view of the arm structure for the display of FIG. 1 in a horizontal position;
FIG. 5 is a schematic cross-sectional view of the arm structure for the display of FIG. 1 in a lowered position;
FIG. 6 shows an exploded view of a monitor stand according to the present utility model; and
Fig. 7 is an exploded view showing the structure of the arm body for the display of the display stand of fig. 6.
Wherein the above figures include the following reference numerals:
10. a first connector; 20. a second connector; 30. a connecting rod structure; 31. a first link; 32. a second link; 40. a balance structure; 41. an energy storage element; 50. an adjustment structure; 51. an adjusting member; 52. a slider; 53. a linkage member; 70. a mounting sleeve; 61. a housing; 62. side baffles; 71. a mounting block; 90. and (3) a bracket.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
In the present utility model and the embodiments of the present utility model, a direction parallel to the expansion and contraction direction of the energy storage element 41 is defined as a first direction, and a direction forming an angle with the first direction is defined as a second direction.
In a display stand lift arm assembly known to the inventors, the display lift arm assembly is comprised of a link and a counterweight that are made to provide non-tilting movement of the display at the ends of the support arms while providing a balance that is equal to the potential energy change of the display. The balance arm has a scotch yoke therein and an energy storage device, the scotch yoke configured to store energy in the energy storage device upon rotation of the support arm. The scheme improves the balance mismatch of the internal energy storage element of the lifting arm to a certain extent when the lifting arm is lifted, but the internal energy storage element cannot be suitable for displays with different weights due to the limitation of the structure of the internal energy storage element, namely the internal energy storage element cannot be adjusted.
In order to solve the above problems, an embodiment of the present utility model provides an arm structure for a display.
As shown in fig. 1 to 7, the arm structure for a display of this embodiment includes: a first connector 10; a second connector 20 for supporting a display; the connecting rod structure 30, the first end of the connecting rod structure 30 is hinged with the first connecting piece 10, and the second end of the connecting rod structure 30 is hinged with the second connecting piece 20; a balancing structure 40 comprising a plurality of energy storage elements 41 arranged in an array between the first connector 10 and the second connector 20 to enable hovering of the display; the adjusting structure 50 is partially installed on the first connecting member 10, and the adjusting structure 50 is used for adjusting elastic potential energy of the plurality of energy storage elements 41 arranged in an aligned manner so as to adapt to displays with different weights.
Through the arrangement, according to the moment balance principle, the elastic potential energy of the plurality of energy storage elements 41 arranged in a arrayed manner can be converted into the gravitational potential energy of the display to be supported, so that hovering of the display at different height positions is realized; moreover, the energy storage elements 41 can be adjusted by the adjusting structure 50, so that the elastic potential energy of the plurality of energy storage elements 41 can be adjusted, and the arm body structure can be suitable for displays with different gravities and has a wider application range.
In the prior art, there is also a monitor stand generally composed of a fixed base and a lifting arm, wherein the fixed base is clamped or placed on a table top, and the lifting arm is connected to the fixed base and used for supporting a monitor and allowing the monitor to be at different heights. An elastic energy storage element is generally arranged on the lifting arm, and converts the elastic potential energy into gravitational potential energy of the display. However, most lifting arms are separate elastic energy storage elements, which results in that in order to meet a higher weight display, the elastic energy storage elements must be made large enough and the lifting arms must also be large enough to accommodate the elastic energy storage elements. In the embodiment of the present application, the plurality of energy storage elements 41 are arranged in the first direction, or are arranged in the first direction and the second direction, so that the length of the single energy storage element 41 in the prior art is not required to be made into the length of the single energy storage element, the length of the whole arm structure is ensured to be shorter, and the parts including the connecting rod structure 30 for accommodating the energy storage elements 41 are not required to be too long, so that the length and the size of the whole arm structure are ensured to be shorter. Further, the adjustment travel when adjusted by the adjustment structure 50 is also relatively short, and the user experience is good.
In the embodiment of the present utility model, as shown in fig. 7, in order to conveniently connect the link structure 30, the first connecting member 10 and the second connecting member 20, two hinge points are provided on the first connecting member 10, two hinge points are provided on the second connecting member 20, and the link structure 30 includes: the first link 31, the first end of the first link 31 is hinged with the first connector 10 through a hinge point C, and the second end of the first link 31 is hinged with the second connector 20 through a hinge point a; and a second link 32, a first end of the second link 32 being hinged to the first link 10 through a hinge point, and a second end of the second link 32 being hinged to the second link 20 through a hinge point B.
In this way, a quadrangle can be formed between the hinge points of the first link 31, the second link 32, the first link 10 and the second link 20.
Preferably, the energy storage element 41 is a spring.
As shown in fig. 2 to 5, in one embodiment of the present utility model, the adjustment structure 50 includes: the adjusting piece 51 is arranged on the first connecting piece 10 in a penetrating way and is rotationally connected with the first connecting piece 10; the sliding piece 52 is arranged on the periphery of the adjusting piece 51, the adjusting piece 51 is in threaded fit with the sliding piece 52, one end of at least one energy storage element 41 is fixedly connected with the sliding piece 52, the adjusting piece 51 is screwed, and the sliding piece 52 can move along the axial direction of the adjusting piece 51 so as to adjust the telescopic length of the energy storage element 41.
In the above-mentioned technical solution, by screwing the adjusting member 51, the sliding member 52 can be moved along the axial direction of the adjusting member 51, and when the sliding member 52 moves toward the direction approaching the first connecting member 10, the sliding member 52 can be extended with the energy storage element 41 engaged therewith, thereby changing the potential energy of the energy storage element 41. Likewise, when the slider 52 is moved in a direction away from the first connector 10, the energy storage element 41 can be compressed, and the potential energy of the energy storage element 41 can also be changed. The axial movement of the slider 52 is achieved in this embodiment by means of a screw-fit, which is convenient to operate.
As shown in fig. 2 and 7, in one embodiment of the present utility model, in order to conveniently adjust the telescopic lengths of the plurality of energy storage elements 41 and improve the adjustment efficiency, the adjustment structure 50 further includes a linkage member 53, the linkage member 53 is connected to the energy storage elements 41, and the adjustment member 51 is disposed through the linkage member 53 to achieve the linkage adjustment of the plurality of energy storage elements 41 through one linkage member 53.
As shown in fig. 7, in one embodiment of the present utility model, the linkage member 53 includes a connection plate, a mounting through hole is formed in the connection plate, through which the adjustment member 51 passes, the sliding member 52 is located at one side of the connection plate, one of the plurality of energy storage elements 41 is connected to the sliding member 52, and the remaining energy storage elements of the plurality of energy storage elements 41 are directly or indirectly connected to the connection plate.
Specifically, as shown in fig. 6 and 7, the number of the energy storage elements 41 is three, and the three energy storage elements 41 are sequentially arranged in the first direction. Thus, the problem of overlong arm structure length of the single energy storage element 41 is solved by the spatial arrangement of the plurality of energy storage elements 41. Specifically, the connecting plate is a rectangular plate, two assembly holes are formed in the connecting plate, the assembly holes are located between the two assembly holes, and the intermediate energy storage element 41 is sleeved on the periphery of the sliding member 52. In one embodiment, the sliding member 52 is a cylindrical structure with a threaded through hole, and an annular mounting groove is formed in the periphery of the cylindrical structure, and one end of the energy storage element 41 is clamped in the mounting groove. In this way, the engagement connection between the energy storage element 41 and the slider 52 can be ensured. The remaining two energy storage elements 41 are fixedly connected with the connecting plate by a locking structure.
In one embodiment, the locking structure comprises a screw rod and a locking sleeve in threaded fit with the screw rod, the screw rod is arranged in the assembly through hole in a penetrating mode, one end of the screw rod is in threaded fit with the locking sleeve, and an annular groove is formed in the periphery of the locking sleeve.
In another embodiment of the present utility model, the linkage 53 may also be a plurality of separately arranged connection plate segments, where the plurality of connection plate segments are arranged in a one-to-one correspondence with the plurality of energy storage elements 41, one connection plate segment corresponds to the sliding member 52 and one energy storage element 41, and the remaining connection plate segments are connected with the remaining energy storage elements 41 in the plurality of energy storage elements 41, and the plurality of connection plate segments are connected therebetween.
In one embodiment of the present utility model, as shown in fig. 2, the hinge points of the first ends of the plurality of energy storage elements 41 are located in the same component. For example, a pivot hole and a pivot shaft penetrating the pivot hole may be provided in the second connecting member 20, and the first ends of the plurality of energy storage elements 41 are hooked on the pivot shaft, so as to form a hinge point, so that the first ends of the plurality of energy storage elements 41 are pivotally connected to the second connecting member 20, which facilitates the arrangement of the energy storage elements 41 and the second connecting member 20. As shown in fig. 2, the pivot shaft has a central axis L1. In this way, the first ends of the plurality of energy storage elements 41 are each rotatable about the central axis L1.
Of course, in another embodiment, the first ends of the plurality of energy storage elements 41 may be disposed on different components according to actual needs, for example, one energy storage element 41 may be hinged to the second connector 20, and the first ends of the remaining energy storage elements 41 facing away from the adjusting structure 50 may be hinged to the second connector 20 or the connecting rod structure 30 may be hinged, so that the second ends of the energy storage elements 41 facing toward the adjusting structure 50 may be pivotally connected with respect to the second connector 20.
As shown in fig. 2, in one embodiment of the present utility model, each energy storage element 41 extends along a first direction, and the plurality of energy storage elements 41 are sequentially arranged along a direction forming an angle with the first direction. In this way, by arranging the plurality of energy storage elements 41 with shorter length, and arranging the plurality of energy storage elements 41 along the direction forming an included angle with the telescopic direction, the length of the whole arm structure is shorter, and the display to be supported can be supported at the required height. In another embodiment, the plurality of energy storage elements 41 may be arranged in rows and columns along a first direction and a second direction forming an angle with the first direction according to actual needs.
As shown in fig. 1, in one embodiment of the present utility model, the arm structure for a display further includes a housing 61 and a side shield 62, the housing 61 and the side shield 62 forming an installation space, the first link 10, the second link 20, the link structure 30, the balance structure 40 and the adjustment structure 50 being located in the installation space, and the side shield 62 being located outside the link structure 30 and being connected to the first link 10 and the second link 20, respectively. In this way, the first connector 10, the second connector 20, the connecting rod structure 30, the balance structure 40 and the adjusting structure 50 can be accommodated in the installation space, so that the appearance of the whole display arm structure is attractive.
As shown in fig. 7, in one embodiment of the present utility model, the arm structure for a display further includes a mounting sleeve 70, the mounting sleeve 70 is located at an outer periphery of the adjusting member 51, the mounting sleeve 70 is rotatable about a preset axis with respect to the first connecting member 10, and the adjusting member 51 is rotatably disposed with respect to the mounting sleeve 70, wherein an included angle is formed between the preset axis and an axis of the adjusting member 51.
In the embodiment of the present utility model, it is necessary to configure the regulating member 51 to be rotatable with respect to the first connecting member 10, and the regulating member 51 is not movable with respect to the first connecting member 10 along its own axis. Specifically, as shown in fig. 7, the mounting sleeve 70 is provided with two rotating shafts, and the arm structure further includes a mounting block 71 pivotally engaged with the two rotating shafts, and the mounting block 71 is fixedly connected to the first connecting member 10, so that the mounting sleeve 70 can swing around the central axis L2 of the two rotating shafts.
As shown in fig. 3, 4 and 5, in one embodiment of the present utility model, the telescopic direction of the energy storage element 41 always forms an angle with the length extension direction of the link structure 30 or the arm direction, regardless of whether the arm structure is in the raised position, the horizontal position or the lowered position. When the arm body structure is at different positions, the included angles between the energy storage element 41 and the connecting rod structure 30 are different, namely the arm body structure can change the moment arm of the energy storage element 41 in the ascending and descending processes, and the display carried by the display bracket can be ensured to be kept at different height positions due to positive correlation between the moment and the moment arm.
Of course, in another embodiment, the line connecting the central axes L1 and L2 may also be regarded approximately as the first direction.
In one embodiment of the present utility model, there is also provided a monitor stand, which includes a stand 90 and the above-mentioned arm structure for a monitor rotatably connected to the stand 90.
Specifically, as shown in fig. 6, the bracket 90 includes a vertical plate and a transverse plate connected to the vertical plate, and the above-mentioned arm structure for a display is rotatably connected to the vertical plate through a rotation shaft, so that an angle of the display to be supported can be adjusted.
Preferably, the vertical plate and the transverse plate are detachably connected through screws, and the transverse plate can be placed at a table top or the like. The display bracket has the advantage of the arm body structure for the display. For example, the display may be a television, a display screen, or the like.
After the arm body structure for the display is adopted, the whole length of the arm body structure for the display is smaller, so that the display bracket can be suitable for different use environments, and different customer demands can be better met.
From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: the elastic potential energy of the plurality of energy storage elements can be converted into gravitational potential energy of the display to be supported, so that hovering of the display at different height positions is realized; moreover, utilize adjusting structure can adjust energy storage element, and then can adjust the elastic potential energy of a plurality of energy storage element to can adapt to the display of different gravity, this arm body structure's application range is wider.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. An arm structure for a display, comprising:
a first connector (10);
a second connector (20) for supporting a display;
a connecting rod structure (30), a first end of the connecting rod structure (30) is hinged with the first connecting piece (10), and a second end of the connecting rod structure (30) is hinged with the second connecting piece (20);
a balancing structure (40) comprising a plurality of energy storage elements (41) arranged in an array between the first connection (10) and the second connection (20) to enable hovering of the display;
and the adjusting structure (50) is partially arranged on the first connecting piece (10), and the adjusting structure (50) is used for adjusting the elastic potential energy of the plurality of energy storage elements (41) which are arranged in a arrayed mode so as to adapt to displays with different weights.
2. The arm structure for a display according to claim 1, wherein the adjustment structure (50) includes:
the adjusting piece (51) is arranged on the first connecting piece (10) in a penetrating way and is rotationally connected with the first connecting piece (10);
the sliding piece (52) is arranged on the periphery of the adjusting piece (51), the adjusting piece (51) is in threaded fit with the sliding piece (52), one end of at least one energy storage element (41) is fixedly connected with the sliding piece (52), the adjusting piece (51) is screwed, and the sliding piece (52) can move along the axial direction of the adjusting piece (51) so as to adjust the telescopic length of the energy storage element (41).
3. The arm structure for a display according to claim 2, wherein the adjusting structure (50) further comprises a linkage member (53), the linkage member (53) is connected with the energy storage element (41), and the adjusting member (51) is arranged on the linkage member (53) in a penetrating manner, so that linkage adjustment of the plurality of energy storage elements (41) is achieved through the linkage member (53).
4. An arm structure for a display according to claim 3, wherein the linkage member (53) comprises a connection plate, a mounting through hole through which the adjustment member (51) passes is formed in the connection plate, the sliding member (52) is located at one side of the connection plate, one of the plurality of energy storage elements (41) is connected to the sliding member (52), and the remaining energy storage elements (41) of the plurality of energy storage elements (41) are directly or indirectly connected to the connection plate.
5. The arm structure for a display according to claim 2, further comprising a mounting sleeve (70), the mounting sleeve (70) being located at an outer periphery of the adjusting member (51), the mounting sleeve (70) being rotatable with respect to the first connecting member (10) about a preset axis, the adjusting member (51) being rotatably arranged with respect to the mounting sleeve (70), wherein an angle is formed between the preset axis and an axis of the adjusting member (51).
6. Arm structure for a display according to any of claims 1 to 5, characterized in that the hinge points of the first ends of the plurality of energy storage elements (41) are located in the same component or in different components.
7. Arm structure for a display according to claim 6, characterized in that a first end of the energy storage element (41) facing away from the adjustment structure (50) is articulated with the second connection (20) or the link structure (30), and that a second end of the energy storage element (41) facing the adjustment structure (50) is pivotally connected with respect to the second connection (20).
8. The arm structure for a display according to any one of claims 1 to 5, wherein a plurality of the energy storage elements (41) each extend in a first direction and are sequentially arranged in a direction making an angle with the first direction; alternatively, the plurality of energy storage elements (41) are arranged along the first direction and a second direction forming an included angle with the first direction, wherein the first direction is a direction parallel to the expansion and contraction direction of the energy storage elements (41).
9. The arm structure for a display according to any one of claims 1 to 5, wherein,
the arm body structure for the display further comprises a shell (61) and a side baffle plate (62), wherein the shell (61) and the side baffle plate (62) form an installation space, the first connecting piece (10), the second connecting piece (20), the connecting rod structure (30), the balance structure (40) and the adjusting structure (50) are positioned in the installation space, and the side baffle plate (62) is positioned on the outer side of the connecting rod structure (30) and is connected with the first connecting piece (10) and the second connecting piece (20) respectively; and/or the number of the groups of groups,
be equipped with two pin joints on first connecting piece (10), be equipped with two pin joints on second connecting piece (20), connecting rod structure (30) include:
a first connecting rod (31), wherein a first end of the first connecting rod (31) is hinged with the first connecting piece (10) through a hinge point C, and a second end of the first connecting rod (31) is hinged with the second connecting piece (20) through a hinge point A;
the first end of the second connecting rod (32) is hinged with the first connecting piece (10) through a hinge point, and the second end of the second connecting rod (32) is hinged with the second connecting piece (20) through a hinge point B.
10. A monitor bracket comprising a bracket (90) and the arm structure for a monitor according to any one of claims 1 to 9 rotatably connected to the bracket (90).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202322229757.5U CN220556125U (en) | 2023-08-17 | 2023-08-17 | Arm structure for display and display bracket |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202322229757.5U CN220556125U (en) | 2023-08-17 | 2023-08-17 | Arm structure for display and display bracket |
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CN220556125U true CN220556125U (en) | 2024-03-05 |
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CN202322229757.5U Active CN220556125U (en) | 2023-08-17 | 2023-08-17 | Arm structure for display and display bracket |
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- 2023-08-17 CN CN202322229757.5U patent/CN220556125U/en active Active
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