Display device

Abstract

The utility model discloses a display device. The display device of the utility model comprises a display module comprising a display panel; an upper arm coupled to the rear of the display module; a lower arm extending lengthwise, the upper arm being hinged to the lower arm; the lower arm is connected to the base through a hinge; the arm hinge assembly is connected with the upper arm and the lower arm; the inner rod extends in the length direction of the lower arm, one end of the inner rod is pivotally connected to the base, and the other end of the inner rod is pivotally connected to the arm hinge assembly; and an outer lever extending along the inner lever, one end pivotally connected to the base and the other end pivotally connected to the arm hinge assembly, the outer lever spaced from the inner lever, the inner lever including: a first inner lever facing the lower arm; and the second inner rod is positioned between the first inner rod and the outer rod and is combined with the first inner rod.

Description

Technical Field

[0001] The utility model relates to a display device. Background Art

[0002] With the development of information society, the demand for display devices has been continuously increasing in various forms. Correspondingly, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent Display), VFD (Vacuum Fluorescent Display), OLED (Organic Light Emitting Diode) have been studied and used in recent years.

[0003] Among them, the LCD panel can include a TFT (Thin Film Transistor) substrate and a color substrate facing each other via a liquid crystal layer, and can display images using light provided by a backlight unit. In addition, the OLED panel can display images by depositing an organic layer capable of self-luminescence on a substrate formed with a transparent electrode.

[0004] Recently, there has been much research on display devices that can be used outdoors, and at the same time, there has been much research on structures that improve the storage and portability of display devices.

[0005] In recent years, display stands are used to freely adjust the height, distance and angle of displays. However, as displays become larger, the displays mounted on the display stands become heavier, so there is a problem that the display stands cannot stably support the displays or cannot smoothly adjust the angle or height of the display stands. Utility Model Content

[0006] The purpose of the present utility model is to solve the aforementioned problems and other problems.

[0007] Another object of the present invention may be to provide a structure capable of folding or unfolding a display display stand.

[0008] Another object of the present invention may be to provide a structure capable of smoothly performing the folding action and the unfolding action of the foldable connecting member of the display display stand.

[0009] Another object of the present invention may be to provide a supporting coupling member for a foldable coupling member of an auxiliary display display stand.

[0010] Another object of the present invention may be to provide a structure capable of minimizing deformation of a support link by increasing the rigidity of the support link.

[0011] Another object of the present invention may be to provide various examples regarding display display stands.

[0012] According to one aspect of the utility model for achieving the above or other purposes, the display device may include: a display module, including a display panel; an upper arm, combined with the rear of the display module; a lower arm, extending long, the upper arm is hinged to the lower arm; a base, the lower arm is hinged to the base; an arm hinge assembly, connecting the upper arm and the lower arm; an inner rod, extending along the length direction of the lower arm, one end of which is pivotally connected to the base, and the other end is pivotally connected to the arm hinge assembly; and an outer rod, extending along the inner rod, one end of which is pivotally connected to the base, and the other end is pivotally connected to the arm hinge assembly, the outer rod is separated from the inner rod, and the inner rod includes: a first inner rod facing the lower arm; and a second inner rod, located between the first inner rod and the outer rod and combined with the first inner rod.

[0013] The first inner rod includes a rib bent from an edge of the first inner rod toward the lower arm at an edge in a longitudinal direction of the first inner rod.

[0014] The first inner rod includes a plurality of first holes formed sequentially along the length direction of the first inner rod, the second inner rod includes a plurality of second holes formed sequentially along the length direction of the second inner rod and corresponding to the plurality of first holes, and the inner rod also includes a plurality of fastening components inserted into the plurality of first holes and the plurality of second holes to fix the second inner rod to the first inner rod.

[0015] The outer rod includes a rib bent from the edge of the outer rod toward the lower arm at an edge of the outer rod in a longitudinal direction of the outer rod.

[0016] The outer rod includes a plurality of slits formed at edges of the outer rod at both ends of the rib.

[0017] The base includes: a first hinge axis, providing a pivot axis of the lower arm, and being fixed to the base; a first upper pin, which is separated from the first hinge axis by a first distance in the radial direction of the first hinge axis and is combined with the base, and one end of the inner rod is pivotally connected to the first upper pin; and a first lower pin, which is separated from the first hinge axis by a second distance in the radial direction of the first hinge axis and is combined with the base, and one end of the outer rod is pivotally connected to the first lower pin; the arm hinge assembly includes: a joint base; a second hinge axis, providing a pivot axis of the upper arm, and is combined with the joint base; a second upper pin, which is separated from the second hinge axis by a third distance in the radial direction of the second hinge axis and is combined with the joint base, and the other end of the inner rod is pivotally connected to the second upper pin; and a second lower pin, which is separated from the second hinge axis by a fourth distance in the radial direction of the second hinge axis and is combined with the joint base, and the other end of the outer rod is pivotally connected to the second lower pin.

[0018] A distance between the first upper pin and the first lower pin is the same as a distance between the second upper pin and the second lower pin.

[0019] The center of the second hinge axis, the center of the second upper pin, and the center of the second lower pin form vertices of a triangle.

[0020] The center of the second hinge axis is spaced apart from a straight line connecting a center of the second upper pin and a center of the second lower pin.

[0021] The second hinge shaft is fixed to the joint base of the arm hinge assembly and rotates together with the joint base, and the upper arm pivots relative to the second hinge shaft.

[0022] The arm hinge assembly also includes: a coil spring wound around the second hinge shaft; and a fixing ring opposite to the joint base across the coil spring and fixed to the second hinge shaft; one end of the coil spring is fixed to the fixing ring, and the other end of the coil spring is supported by the upper arm.

[0023] The upper arm also includes a cylindrical circular configuration groove for inserting the second hinge shaft, and the arm hinge assembly also includes: a circular control disk that rotates inside the circular configuration groove for inserting and fixing the second hinge shaft, the circular control disk including a position control console protruding from the edge in the radial direction, the circular configuration groove having a locking table adjacent to the outer periphery of the circular control disk and for locking the position control console to limit the rotation range of the second hinge shaft.

[0024] The base also includes: a first coil spring, which is wound around the first hinge axis, one end of which is supported by the base, and the other end of which is supported by the lower arm, thereby providing elastic force from the base to the lower arm; the arm hinge assembly also includes: a second coil spring, which is wound around the second hinge axis, one end of which is fixed to the second hinge axis, and the other end of which is supported by the upper arm, thereby providing elastic force from the lower arm to the upper arm; the display device also includes a tension spring, one end of which is engaged with the lower arm, and the other end of which is engaged with the first inner rod.

[0025] The extension spring is extended when the height of the arm hinge assembly becomes lower toward the base, and is compressed when the height of the arm hinge assembly becomes higher from the base.

[0026] Next, the effects of the display device of the present invention will be described.

[0027] According to at least one embodiment of the present invention, a structure capable of folding or unfolding a display display stand can be provided.

[0028] According to at least one embodiment of the present invention, a structure capable of smoothly performing the folding action and the unfolding action of the foldable connecting member of the display display stand can be provided.

[0029] According to at least one embodiment of the present invention, a supporting coupling member of a foldable coupling member of an auxiliary display display stand may be provided.

[0030] According to at least one of the embodiments of the present invention, a structure capable of minimizing deformation of a support link by increasing the rigidity of the support link may be provided.

[0031] According to at least one embodiment of the present invention, various examples of display display stands may be provided.

[0032] From the following detailed description, the scope of the additional application of the present invention will become apparent. However, those skilled in the art can clearly understand the various changes and modifications within the thought and scope of the present invention, so it should be understood that the detailed description and specific embodiments such as the preferred embodiments of the present invention are given only by way of example. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figures 1 to 40 It is a diagram showing an example of a display device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the drawings. The same or similar components are denoted by the same reference numerals regardless of the figure numbers, and repeated description thereof will be omitted.

[0035] The suffixes "module" and "unit" for the constituent elements used in the following description are given or used interchangeably only for the convenience of writing the specification, and do not have meanings or functions that distinguish one from another.

[0036] In addition, when describing the embodiments disclosed in this specification, if it is determined that the specific description of the relevant known technology may confuse the main purpose of the embodiments disclosed in this specification, the detailed description will be omitted. In addition, the drawings are only used to help understand the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the drawings, and should be understood to include all changes, equivalents and substitutes within the ideas and technical scope of this specification.

[0037] Terms including ordinal numbers such as "first" and "second" may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from other components.

[0038] When a certain component is mentioned as being "connected" or "linked" to another component, it should be understood that it may be directly connected or linked to the other component, but other components may also exist between them. Conversely, when a certain component is mentioned as being "directly connected" or "directly linked" to another component, it should be understood that there are no other components between them.

[0039] Unless the context clearly indicates otherwise, an expression in the singular includes an expression in the plural.

[0040] In the present application, terms such as "including" or "having" are only used to specify the existence of features, numbers, steps, actions, constituent elements, parts or their combinations recorded in the specification, and are not intended to exclude the possibility of the existence or addition of one or more other features or numbers, steps, actions, constituent elements, parts or their combinations.

[0041] Figure 1 and Figure 2 1 is a schematic diagram showing the posture transition state between folding and unfolding of the display arm display stand according to one embodiment of the utility model. Figure 3 and Figure 4 1 is a three-dimensional diagram showing a folded state of a display arm display stand according to an embodiment of the utility model. Figure 5 and Figure 6 1 is a perspective view showing the unfolded state of the display arm display stand according to one embodiment of the utility model. Figure 7 and Figure 8 Detailed diagram showing the connection between the base, the first link and the first torsion spring in the unfolded state and the folded state of the display arm display stand according to one embodiment of the present invention. Fig. 9 The utility model is an exploded perspective view showing a base, a first connecting member and a first torsion spring of an arm display stand for a display according to an embodiment of the present invention.

[0042] like Figures 1 to 6 As shown, the display arm display stand 100 of an embodiment of the utility model may include a base 10, a first link 21, a first torsion spring 20, a joint base 30a, 30b, a second link 41, a second torsion spring 40, a third link 51, 52, a tension spring 50a, 50b, a bracket portion 60 and a locking portion 70, so as to smoothly and stably perform a posture conversion from a folded state to an unfolded state when the display D is used and a posture conversion from an unfolded state to a folded state when the display is not used. The display arm display stand 100 may be referred to as a display display stand 100, or a display arm 100, or a display stand 100 or a support 100. The display D and the display arm display stand 100 may be collectively referred to as a display device. The display D may be referred to as a display unit D, or a display module D, or a head D. The first link 21 and the second link 41 may be collectively referred to as foldable links 21, 41. The third links 51 , 52 may be referred to as bars 51 , 52 , or auxiliary links 51 , 52 , or supporting links 51 , 52 .

[0043] like Figures 7 to 9 As shown, the base 10 includes a first base 10a and a second base 10b having first hinge holes 11 formed through the main body respectively, and has a first hinge axis 12 passing through the first hinge hole, and is a fixed structure that can be detachably fixed on a plane by a plurality of fastening components.

[0044] Such a base 10 is a structure in which the first base and the second base are fixedly installed at a predetermined interval on a flat surface of a table top or on the bottom surface of a recessed portion recessed at a predetermined depth in a flat surface.

[0045] The base 10 may include a first base 10a and a second base 10b forming a left and right pair, wherein the first base 10a forms another plane 11a on the inner surface of the hinge hole that contacts the plane 12a formed on the outer surface of one end of the first hinge axis, and the second base 10b forms another plane 11b on the inner surface of the hinge hole that contacts the plane 12b formed on the outer surface of the other end of the first hinge axis.

[0046] Therefore, when the first hinge axis is combined with the first hinge hole of the base formed by the first base and the second base, the first hinge axis can be combined with the first hinge hole of the base to be difficult to rotate through the contact between the plane formed on the inner surface of the first hinge hole and the plane formed on the outer surface of the first hinge axis.

[0047] The lower end of one end of the first link may be rotatably connected to a first hinge shaft exposed to the outside between the first base and the second base facing each other, and a first torsion spring providing elastic force to the first link may be disposed on the first hinge shaft.

[0048] like Figures 7 to 9 As shown, the first link 21 is a link member having a substantially circular connection hole 21a formed through one end thereof so as to be assembled corresponding to the first hinge shaft 12 exposed between the first base and the second base of the base and rotatably connected to the first hinge shaft 12 with a predetermined length. The first link 21 may be referred to as a lower arm 21.

[0049] Preferably, a cut-out portion 22 cut outwardly is formed at the lower end of one end of the first connecting member 21 connected to the first hinge shaft 12 to prevent interference with the first torsion spring 20 arranged in a pair in the middle of the length of the first hinge shaft, and another cut-out portion is cut at the upper end of the other end of the first connecting member connected to the second connecting member via the second hinge shaft to ensure that the overlapping second connecting members can be inserted into the configured space without interference when folded.

[0050] The first torsion spring 20 is an elastic member that is arranged on the first hinge shaft 12 corresponding to one end of the first link, so that one end thereof contacts and is engaged with the upper surface of the base that integrates the first base and the second base, and the other end contacts and is engaged with a positioning groove formed at the lower end of one end of the first link 21, and applies elastic force so that the first link 21 can rotate upward with the first hinge shaft as the rotation center when the unfolding posture is converted. The first torsion spring 20 can be called a first elastic member 20.

[0051] A hollow cylindrical spacer 23 may be disposed in the middle of the length of the first hinge shaft corresponding to the first torsion spring 20 to prevent the inner surface of the elastically deformed first torsion spring from directly contacting the outer surface of the first hinge shaft during folding and unfolding.

[0052] Although the first torsion spring 20 is illustrated and described as a pair of torsion spring members with one end located between a pair of bosses protruding from the upper surface of the base and connected by engagement, the present invention is not limited thereto and the first torsion spring 20 may be a single torsion spring member.

[0053] One end of the first hinge shaft 12 may be provided so as to be fastened with the first anti-separation nuts 25 through a plurality of first spacer washers 25a. The first spacer washers 25a may be referred to as washers 25a or disc springs 25a.

[0054] Therefore, if the first connecting member is converted from the unfolded state to the folded state by the external force of the user and rotates downward, the other end of the first torsion spring that is engaged with the lower end of the first connecting member can be forced to move toward the base side and undergo torsional elastic deformation to generate elastic restoring force.

[0055] On the contrary, if the first connecting member is converted from the folded state to the unfolded state by releasing the engagement of the locking portion of the first connecting member that restricts the folding, the first connecting member can rotate upward with the first hinge axis as the rotation center due to the elastic restoring force of the first torsion spring that is torsionally elastically deformed when folded.

[0056] Fig.10 and Fig.11 Detailed diagram showing the connection between the joint base, the second link and the second torsion spring in the unfolded state and the folded state of the display arm display stand according to one embodiment of the utility model. Fig.12 The utility model is an exploded stereoscopic view showing a joint base, a second connecting piece and a second torsion spring provided on an arm display stand for a display according to an embodiment of the utility model.

[0057] like Figures 10 to 12 As shown, the joint bases 30a and 30b are structures that have a second hinge hole 31 formed through the center of the main body, a second hinge shaft 32 of a predetermined length that passes through the second hinge hole, and articulates the first link and the second link. The joint bases 30a and 30b can be called joints 30a and 30b or arm hinges 30a and 30b.

[0058] Such joint bases 30a, 30b may be provided as a pair of structures respectively located at two ends of the second hinge axis corresponding to and engaging with the second hinge hole.

[0059] The second hinge shaft 32 is a shaft member having a predetermined length and inserted into the second hinge hole 31 so as to have both ends exposed to the outside of each of the pair of joint bases 30 a and 30 b .

[0060] In the middle of the length of the second hinge shaft 32 combined with a pair of joint bases, another connecting hole formed through the upper end of the other end of the first connecting member can be rotatably assembled thereto, and a connecting hole formed through the lower end of one end of the second connecting member can be rotatably assembled thereto. On the other hand, a second torsion spring 40 can be included between the upper end of the other end of the first connecting member and the lower end of one end of the second connecting member to apply an elastic restoring force to the second connecting member.

[0061] A pair of joint bases 30a, 30b can be respectively penetrated to form a first pin hole 31a intersecting the second hinge hole, and second pin holes 32a intersecting the second hinge hole can be respectively penetrated at the two ends of the second hinge shaft 32 corresponding to the pair of joint bases, which can include a pair of fixing pins 33 correspondingly inserted into the first pin hole and the second pin hole that are consistent with each other.

[0062] Thus, the fixing pin is inserted through the first pin hole and the second pin hole respectively and combined with the second hinge shaft. The second hinge shaft inserted into the second hinge hole can be set by the fixing pin to be combined with each second hinge hole of a pair of joint bases to form a fixed shaft component that is difficult to rotate.

[0063] In addition, in a pair of joint bases 30a, 30b, another plane that contacts the plane formed on the outer surface of the second hinge axis is formed on the inner surface of the second hinge hole 31, thereby enabling the fixing force that makes the second hinge axis and the second hinge hole of the joint base difficult to rotate to be improved by the contact between the plane formed on the outer surface of the second hinge axis 32 and the plane formed on the inner surface of the second hinge hole when the second hinge axis and the second hinge hole are correspondingly combined, together with the fixing force based on the fixing pin.

[0064] like Figures 10 to 12 As shown, the second link 41 is a link member having a substantially circular connection hole formed through the lower end as one end, so that the lower end as one end is rotatably connected to the second hinge shaft 32, the second hinge shaft 32 is inserted through the second hinge holes arranged in a pair of the joint bases and is rotatably connected to the upper end as the other end of the first link, and has a predetermined length that is relatively shorter than the length of the first link. The second link 41 can be called an upper arm 41.

[0065] A bracket portion 60 to which a display D as a weight object is detachably coupled may be fixedly provided at the upper end of the other end of the second coupling member 41 .

[0066] The second torsion spring 40 is an elastic member that has one bent end snap-connected to a fixing hole 31b formed by a recessed inner side surface of one joint base 30a of a pair of joint bases, and the other end snap-connected to a snap-connecting platform formed as a step on a side surface of a lower end of one end of the second link, so that an elastic restoring force is applied during the unfolding posture conversion so that the second link can rotate upward with the second hinge axis as the rotation center, and is torsionally elastically deformed to generate an elastic restoring force during the folding posture conversion in which the second link 41 overlaps and is parallel to the first link 21. The second torsion spring 40 may be referred to as a second elastic member 40.

[0067] In addition to the rotation restriction based on the fixing pin, by forming another planar portion in contact with the planar portions formed on the outer surfaces of both ends of the second hinge shaft in each second hinge hole 31 of a pair of joint bases combined with the second hinge shaft 32, the second hinge shaft assembled to a pair of joint bases can be assembled with the second hinge hole to be difficult to rotate.

[0068] Furthermore, a portion of the second hinge shaft 32 corresponding to the second torsion spring 40 may include a hollow cylindrical spacer 43, which is configured to be arranged in a space formed between an inner surface of the second torsion spring 40 and an outer surface of the second hinge shaft.

[0069] One end of the second hinge shaft 32 may be configured to tighten the second anti-separation nut 45 through a spacer washer 45a so that the first, second and third connectors are difficult to separate. The spacer washer 45a may be referred to as a washer 45a or a disc spring 45a.

[0070] In addition, a stop plate 35 can be included, which is assembled in the middle of the length of the second hinge shaft 32 to be difficult to rotate and is arranged between the lower end of one end of the second connecting member 41 and one side joint base 30b of a pair of joint bases. The outer surface of the stop plate 35 corresponding to one end of the second connecting member 41 can be recessed to form an arc-shaped engaging guide groove 35a, and a position control console 44 protruding at one end of the second connecting member contacts the arc-shaped engaging guide groove 35a and is engaged on the way to be guided to move, thereby generating an engaging force to limit the rotational movement of the second connecting member that rotates around the second hinge shaft in the direction opposite to the first connecting member during the unfolding posture conversion and the folding posture conversion.

[0071] Another arc-shaped engaging guide groove 29 can be recessed on the outer surface of the upper end of the other end of the first connecting member 21 corresponding to the other side joint base 30a of the pair of joint bases. When the bent part of the torsion spring engaged with the other side joint base 30a contacts and is guided to move, an engaging force is generated to limit the rotational movement of the first connecting member that rotates around the second hinge axis in the direction opposite to the second connecting member during the unfolding posture conversion and the folding posture conversion.

[0072] Therefore, when the folding posture is converted to the unfolding posture, in the process of the second connecting member performing a rotary motion with the second hinge axis as the rotation center, the rotary movement of the second connecting member can be controlled at a preset angle by controlling the position of the second connecting member and the bending part of the second torsion spring which forms a locking position with the end of the arc-shaped engaging guide groove formed on the stop plate during the movement.

[0073] like Fig.11 , Fig.12 as well as Fig.13 As shown, the third connecting members 51 and 52 are connecting members of a predetermined length, each of which is rotatably connected at both ends to the first base 10a and the second base 10a10b of the base 10 fixed on the plane and a pair of joint bases 30a and 30b connecting the first connecting member and the second connecting member, and each is arranged on both sides of the first connecting member 21. The third connecting member 51 can be called a first rod 51, and the third connecting member 52 can be called a second rod 52.

[0074] A connecting hole may be formed through one end of the third connecting member 51 on one side of a pair of third connecting members corresponding to the base 10, and the connecting hole may be rotatably connected to a first upper pin 14a corresponding to an upper pin hole inserted into a first hinge hole formed to be eccentrically positioned upward from a first base 10a on one side of the first base and the second base constituting the base. Another connecting hole may be formed through the other end of the third connecting member 51 on one side of the pair of third connecting members corresponding to a joint base 30a on one side of the pair of joint bases 30a, 30b, and the other connecting hole may be rotatably connected to a second upper pin 34a corresponding to an other upper pin hole inserted into a second hinge hole formed to be eccentrically positioned upward from the joint base 30a on one side.

[0075] A connecting hole may be formed through one end of the remaining third connecting member 52 on the other side of a pair of the third connecting members, so that it can be rotatably connected to the first lower pin 14b corresponding to the lower pin hole inserted into the first hinge hole formed through the other side second base 10b of the first base and the second base constituting the base, and another connecting hole may be formed through the other end of the third connecting member 52 on the other side of the pair of the third connecting members, so as to be rotatably connected to the second lower pin 34b corresponding to the lower pin hole inserted into the second hinge hole formed through the other side joint base 30b of the pair of the joint bases.

[0076] The two ends of the third connecting member 51 on one side of the pair of third connecting members 51, 52 are respectively rotatably assembled to the first upper pin 14a of the first base and the second upper pin 34a of the joint base on one side, and the two ends of the third connecting member 52 on the other side are respectively rotatably assembled to the first lower pin 14b of the second base and the second lower pin 34b of the joint base on the other side, thereby the third connecting members 51, 52 arranged on both sides of the first connecting member are arranged as connecting members parallel to each other with a height difference between them.

[0077] Preferably, a slit groove is cut into the outer surface of the first base on which the first upper pin is provided and the outer surface of the second base on which the first lower pin is provided, so that one end of the third connecting member can rotate together with the first connecting member without engagement when the posture is changed, and another slit groove is cut into the outer surface of a pair of joint bases on which the second upper pin and the second lower pin are provided, so that the other end of the third connecting member can rotate together with the first connecting member without engagement when the posture is changed.

[0078] like Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the pair of tension springs 50a, 50b are spiral spring members, one end of which is respectively engaged with the two side surfaces in the middle of the length of the first link 21, and the other end of which is respectively engaged with the inner side surfaces in the middle of the length of the pair of third links, so that when unfolded, the pair of tension springs, together with the first torsion spring, exert elastic restoring force on the first link 21 that rotates upward around the first hinge axis 12, and when folded, provide resistance to prevent the load of the display from causing the first link to rotate sharply downward around the first hinge axis 12. The tension springs 50a, 50b can be called third elastic members 50a, 50b.

[0079] One end of each of the pair of tension springs 50a, 50b can be engaged and connected to the hanging bars arranged on the two side surfaces of the first connecting member, and the other end of each of the pair of tension springs 50a, 50b can be engaged and connected to the bending pieces formed by bending from the inner side surfaces of a pair of third connecting members arranged on both sides of the first connecting member toward the first connecting member.

[0080] This pair of tension springs 50a, 50b are arranged between the two sides of the first connecting member and the inner side of the third connecting member to be adjacent to the base. The two side surfaces of the first connecting member 21 adjacent to the base may include cut portions cut inward to ensure space for respectively arranging the pair of tension springs 50a, 50b.

[0081] Fig.13 The present invention is a schematic diagram showing the action state of the display arm display stand of an embodiment of the present invention when converting from a folded state to an unfolded state. In the folded state in which the first connecting member is in parallel contact with the plane, if the first connecting member rotates upward in the clockwise direction in the figure with the first hinge axis as the rotation center, a pair of third connecting members 51 and 52 arranged in parallel on both sides of the first connecting member with different heights rotate upward in a state parallel to the first connecting member with the first upper pin, the second upper pin, the first lower pin and the second lower pin eccentrically arranged adjacent to the first hinge axis and the second hinge axis as the rotation center. Therefore, the engaging position where the other ends of the pair of tension springs are connected to the pair of third connecting members moves to approach the pair of engaging position sides where one end of the pair of tension springs 50a and 50b is connected to the first connecting member, so that the distance between the two ends of the pair of tension springs 50a and 50b is gradually reduced in the order of L1>L2>L3.

[0082] Therefore, when the first connecting member is converted from a folded state to an unfolded state in order to use a display, the elastic restoring force generated by the pair of tension springs that are in the longest stretch during the process of contracting and recovering to the original state is transmitted to the first connecting member together with the elastic restoring force transmitted from the first torsion spring. As a result, the first connecting member can more stably perform the upward rotation action around the first hinge axis when carrying a large and heavy display. In addition, the design freedom can be improved by reducing the elastic coefficient of the first torsion spring that provides the elastic restoring force when rotating upward in order to convert the first connecting member to the unfolded state.

[0083] In addition, if Figure 1As shown, when converting from the folded state to the unfolded state, the rotation angle at which the initial first coupling member rotates upward about the first hinge axis by the elastic restoring forces of the first torsion spring and the tension spring is set to be similar to the rotation angle at which the second coupling member rotates upward about the second hinge axis by the elastic restoring force of the second torsion spring. Thus, the display can be raised to a specified height while maintaining a horizontal state, and then the display is converted to a vertical state.

[0084] Conversely, in the unfolded state where the first coupling member rotates upward and stands obliquely, if the first coupling member rotates downward about the first hinge axis in the counterclockwise direction in the drawing, the pair of third coupling members rotate downward while maintaining a parallel state on both sides of the first coupling member with the first upper pin and the first lower pin that are eccentrically arranged adjacent to the first hinge axis as the rotation centers. Therefore, the other engagement positions where the respective other ends of the pair of tension springs are connected to the pair of third coupling members move away from the engagement position side where the respective one ends of the pair of tension springs 50a, 50b are connected to the first coupling member, so that the distances between the respective two ends of the pair of tension springs 50a, 50b gradually increase in the order of L3 < L2 < L1.

[0085] Thus, when converting the first coupling member from the unfolded state to the folded state for storing the used display, the pair of tension springs that were in a contracted and restored state during unfolding can generate an elastic restoring force during the process of being stretched along the length direction.

[0086] By the elastic restoring force generated at this time, the load of the large and heavy display mounted on the support portion of the second coupling member can be dispersed, thereby preventing the first coupling member from rotating downward sharply about the first hinge axis and performing a more stable rotation action. On the other hand, the design freedom can be improved by reducing the elastic coefficient of the first torsion spring.

[0087] In addition, when converting from the unfolded state to the folded state, during the process where the initial first coupling member rotates downward about the first hinge axis, as Figure 2 shown, the display mounted on the support portion of the second coupling member can descend while maintaining a vertical state until the lower end, which is one end of the second coupling member, is engaged and restricted by the locking portion.

[0088] Furthermore, a pair of the third connecting members 51, 52 are arranged on one side and the other side of the first connecting member 21 to be parallel to the first connecting member, thereby enabling the external force indirectly transmitted to the first connecting member due to the load of the display as a heavy object during the upward rotation when converting from the folded state to the unfolded state or the downward rotation when converting from the unfolded state to the folded state to be dispersed left and right through the third connecting members respectively arranged on the outer sides of the two sides of the first connecting member. Therefore, deformation or damage of the first connecting member can be prevented without excessively increasing the section modulus and strength of the first connecting member as a core component, thereby realizing an optimal arm display stand suitable for carrying and using a display that becomes heavier due to its large size, and since the elastic force that the torsion spring that applies elastic force to the first connecting member should bear can be reduced, the size of the torsion spring can be reduced, thereby achieving the advantage of reducing the size of the base, which is conducive to thinning.

[0089] Fig.14 Detailed diagram of a bracket portion of an arm display stand for a display according to an embodiment of the present invention. Fig.15 The invention is a detailed diagram showing a locking portion of an arm display stand for a display according to an embodiment of the invention.

[0090] like Fig.14 and Fig.15 As shown, the bracket portion 60 may have a rotating plate 61 in a substantially quadrilateral plate shape rotatably coupled to the front end of a rotating support shaft 64 provided at the other end of the second coupling member 41, and connected to the back of the display D in a detachable manner. The bracket portion 60 may be referred to as a bracket 60. The bracket 60 may be detachably coupled to the back cover of the display D. The display D may have an LCD panel or an OLED panel, which is opposite to the back cover and displays an image. If the display D has an LCD panel, the display D may include a backlight unit that provides light to the LCD panel.

[0091] The rotation support shaft 64 is a shaft member of a predetermined length that is assembled to an assembly hole 64a formed through the upper end as the other end of the second link so as to be difficult to rotate and is assembled to be difficult to come off from the assembly hole by a nut member.

[0092] Between the rotating plate 61 rotatably assembled at the front end of the rotating support shaft and the other end of the second connecting member that passes through the assembly hole, a roughly disc-shaped spacing retaining pad 63 in contact with the back side of the rotating plate can be included to enable the rotating plate to rotate smoothly.

[0093] In addition, the other end of the second connecting member 41 corresponding to the rotating plate may include a pin support body 65, and a locking pin component 65a is arranged at the front end of the pin support body 65. The portion of the rotating plate 61 corresponding to the locking pin component may include an arc-shaped guide slit 61a formed through the rotating plate 61 at a rotation angle of approximately 90 degrees to guide the movement of the locking pin component.

[0094] Thus, the rotating plate detachably connected to the back surface of the display can be rotated approximately 90 degrees in the forward or reverse direction with the rotating support shaft as the rotation center, so that the display can be rotated and moved.

[0095] Furthermore, when the rotating plate rotates, the engaging pin member is guided and moved along the arc-shaped guide slit to generate an engaging force that is restricted by the engagement, thereby making it possible to easily and freely change the display to a landscape mode or a portrait mode in accordance with user preferences.

[0096] like Fig.14 and Fig.15 As shown, with respect to the locking portion 70, the end of the second connecting member 41 corresponding to the pair of joint bases can be selectively engaged to limit the folded state formed by folding the first connecting member 21 and the second connecting member 41 around the second hinge axis 32, or the engagement restriction on the lower end of the end corresponding to the joint base as the second connecting member can be selectively released to switch to an expanded state in which a pair of the first connecting member and the second connecting member are expanded by rotating upward in opposite directions around the first hinge axis and the second hinge axis.

[0097] This locking portion 70 may include: a collision block 71, which is detachably arranged at one end of the second connecting member 41 corresponding to the joint base; a push-type latch 72, which has a snap fit that generates a fixing force by inserting the lower end as the end of the collision block; and a latch retainer 73, which fixes the push-type latch on the plane where the base is fixedly set.

[0098] At this time, although the locking portion is illustrated and described as being provided by a push-type latch, it is not limited to this, and an actuator such as an electromagnetic valve or a manual locking structure such as a locking pin may be used, which generates an external force causing a locking limit force at one end of the second connecting member when power is applied when the overlapping first connecting member and the second connecting member are close to each other on a plane.

[0099] Reference Figures 1 to 15, the arm display stand for a monitor may include: a base, having a first hinge axis combined with a first hinge hole formed through a main body of the base, and fixedly arranged on a plane; a first connecting piece, one end of which is rotatably connected to the first hinge axis; a first torsion spring, one end of which is arranged on the first hinge axis and is engaged with the base, and the other end is engaged with one end of the first connecting piece, thereby applying an elastic force to the first connecting piece; a pair of joint bases, having a second hinge axis combined with a second hinge hole formed through a main body of the pair of joint bases; a second connecting piece, one end of which is rotatably connected to the middle of the length of the second hinge axis; a second torsion spring, one end of which is engaged with a joint base on one side of the pair of joint bases, and the other end is engaged with one end of the second connecting piece, thereby applying an elastic force to the second connecting piece; a pair of third connecting pieces , both ends of which are rotatably connected to the first base, the second base and a pair of joint bases arranged on the base, and are arranged on both sides of the first connecting piece; a pair of tension springs, each of which has one end engaged and connected to the first connecting piece, and the other end of which is engaged and connected to a pair of the third connecting pieces, to apply elastic force to the first connecting piece; a bracket part, comprising a rotating plate rotatably coupled to the front end of a rotating support shaft arranged at the other end of the second connecting piece, and connected to the back of the display; and a locking part, which engages and restricts the second connecting piece to maintain the first connecting piece and the second connecting piece in a folded state in which the first connecting piece and the second connecting piece are folded around the first hinge axis and the second hinge axis, or to release the engagement restriction with the second connecting piece to switch to an unfolded state in which the first connecting piece and the second connecting piece are unfolded around the first hinge axis and the second hinge axis.

[0100] The base may include a left and right pair of a first base and a second base, wherein the first base forms another plane in contact with a plane formed on the outer surface of one end of the first hinge axis on the inner surface of the hinge hole, and the second base forms another plane in contact with a plane formed on the outer surface of the other end of the first hinge axis on the inner surface of the hinge hole.

[0101] The joint bases can each be penetrated to form a first pin hole intersecting with the second hinge hole, and second pin holes intersecting with the second hinge hole can be penetrated to form at both ends of the second hinge shaft corresponding to the joint bases. By inserting fixing pins correspondingly into the first pin hole and the second pin hole that are consistent with each other, the second hinge shaft and the second hinge hole can be combined to be difficult to rotate.

[0102] The display arm display stand may include a stop plate, which is assembled with the second hinge shaft to be difficult to rotate and is arranged between one end of the second connecting member and the joint base on one side of a pair of joint bases. The outer surface of the stop plate may include an arc-shaped locking groove formed by a recess so that a locking force is generated when the position control console protruding at the other end of the second connecting member is guided to move.

[0103] The other end outer surface of the first connecting member corresponding to the other side joint base of the pair of joint bases may include another arc-shaped engaging guide groove formed by a recess, so that an engaging force is generated when the bending part of the torsion spring engaged and connected to the other side joint base is guided to move.

[0104] The other end of the second connecting member where the rotating support shaft is arranged may include a pin support body with a locking pin component arranged at the front end, and the rotating plate may include an arc-shaped guide slit, which is formed through a rotation angle of 90 degrees to guide the locking pin component to move.

[0105] Fig.16 and Fig.17 1 is a schematic diagram showing the posture transition state between folding and unfolding of the display arm display stand according to one embodiment of the utility model. Fig.18 and Fig.19 1 is a three-dimensional diagram showing a folded state of a display arm display stand according to an embodiment of the present invention. Fig. 20 and Fig.21 1 is a perspective view showing the unfolded state of the display arm display stand according to one embodiment of the utility model. Fig. 22 and Fig.23 Detailed diagram showing the connection between the base, the first link and the first torsion spring in the unfolded and folded states of the display arm display stand according to one embodiment of the utility model. Fig.24 and Fig.25 The utility model is an exploded perspective view showing a base, a first connecting member and a first torsion spring of an arm display stand for a display according to an embodiment of the present invention.

[0106] like Figures 16 to 21As shown, the display arm display stand 1100 of an embodiment of the utility model may include a base 110, a first link 121, a pair of first torsion springs 120a, 120b, a joint base 130, a second link 141, a second torsion spring 140, a third link 151, 152, a tension spring 150, a bracket portion 60 and a locking portion 70, so as to smoothly and stably perform a posture conversion from a folded state to an unfolded state when the display D is used and a posture conversion from an unfolded state to a folded state when the display is not used. The display arm display stand 1100 may be referred to as a display display stand 1100, or a display arm 1100, or a display stand 1100, or a support 1100. The display D and the display arm display stand 1100 may be collectively referred to as a display device. The display D may be referred to as a display unit D, or a display module D, or a head D. The first link 121 and the second link 141 may be collectively referred to as foldable links 121, 141. The third links 151 , 152 may be referred to as bars 151 , 152 , or auxiliary links 151 , 152 , or supporting links 151 , 152 .

[0107] like Figure 22 to Figure 25 As shown, the base 110 includes a first base 110a having a first hinge axis 112 combined with a first hinge hole 111 formed through the main body, and a second base 110b having an integrated hinge axis 112a of a specified length on a side surface corresponding to the first hinge axis, and is a fixed structure that can be detachably fixed on a plane by a plurality of fastening components.

[0108] The base 110 is a structure in which the first base and the second base are fixedly installed on a flat surface of a table top or on a bottom surface of a concave portion recessed to a predetermined depth.

[0109] The first base 110a will form another plane in contact with the plane formed on the outer surface of the first hinge axis on the inner surface of the first hinge hole 111, so that when the first hinge axis is correspondingly combined with the first hinge hole, the first hinge axis can be combined with the first hinge hole of the first base to be difficult to rotate through the contact between the plane formed on the outer surface of the first hinge axis 112 and the plane formed on the inner surface of the first hinge hole.

[0110] The first hinge shaft 112 may be configured such that the lower end of one end of the first link is rotatably assembled to the first hinge shaft 112 and is provided with a first torsion spring 120a on one side of a pair of first torsion springs providing elastic force to the first link.

[0111] An integrated hinge shaft 112a extending a specified length toward the first hinge shaft side may be provided on a side surface of the second base 110b corresponding to the first base. The integrated hinge shaft may be configured to be rotatably assembled on the integrated hinge shaft at the lower end of one end of the first connecting member, and may be provided with a first torsion spring 120b on the other side of a pair of first torsion springs for providing elastic force to the first connecting member.

[0112] like Figure 22 to Figure 25 As shown, the first link 121 is a link member having a predetermined length and rotatably connected to the first hinge shaft 112 and the integrated hinge shaft 112a, and has substantially circular connection holes 121a and 121b formed through the lower end as one end, respectively, so as to correspond to the first hinge shaft of the first base of the base and the integrated hinge shaft of the second base of the base, respectively. The first link 121 can be referred to as a lower arm 121.

[0113] One end of the first connecting member 121 coupled to the first hinge shaft 112 may include another recessed groove formed so as to be snap-connected to the other ends of a pair of first torsion springs that are snap-connected to the respective snap-connected grooves 119a and 119b formed in the first base and the second base.

[0114] In addition, the first connecting member 121 may include a cable arrangement groove 123 formed in a concave shape on a lower surface of a side surface corresponding to a plane on which the base is fixed, so as to accommodate and arrange a cable of a specified length electrically connected to the display.

[0115] Preferably, a cutout portion is formed by cutting out the upper end of the other end of the first connecting member connected to the second connecting member via the second hinge axis to ensure a space for the overlapped second connecting member to be inserted and arranged without interference when folded.

[0116] The pair of first torsion springs 120a, 120b are elastic members that are respectively provided at the first hinge axis 112 of the first base and the integrated hinge axis 112a of the second base corresponding to one end of the first link, with one end of each being engaged with a locking groove formed in the first base and the second base and the other end being engaged with another locking groove formed at the lower end of one end of the first link, and applying elastic force to enable the first link 121 to rotate upward with the first hinge axis as the rotation center when the unfolding posture is converted. The first torsion springs 120a, 120b may be referred to as first elastic members 120a, 120b.

[0117] Although the first torsion spring 120a, 120b is illustrated and described as a pair of torsion spring components with one end each configured on the first hinge axis of the first base and the integrated hinge axis of the second base, it is not limited to this. It can also be set as a torsion spring component that is configured on both the first hinge axis and the integrated hinge axis, and one end of which is engaged with one side base of the first base and the second base and the other end of which is engaged with one end of the first connecting member.

[0118] In addition, one end of the first hinge shaft 112 may be provided to fasten the first anti-separation nuts 125 respectively through a plurality of first spacer washers 125a. The first spacer washers 125a may be referred to as washers 125a or disc springs 125a.

[0119] Therefore, if the first connecting member is converted from the unfolded state to the folded state and rotated downward due to external force from the user, the other ends of a pair of first torsion springs snap-connected to the lower end of one end of the first connecting member can be forced to move toward the first base and the second base side and undergo torsional elastic deformation so as to generate elastic restoring force.

[0120] On the contrary, if the first link is converted from the folded state to the unfolded state, the first link can be rotated upward with the first hinge axis as the rotation center due to the elastic restoring force of the first torsion spring that has been elastically deformed during folding and wants to return to the original state.

[0121] Fig.26 and Fig. 27 Detailed diagram showing the connection between the joint base, the second link and the second torsion spring in the unfolded state and the folded state of the display arm display stand according to one embodiment of the utility model. Fig.28 and Fig.29 The utility model is an exploded stereoscopic view showing a joint base, a second connecting piece and a second torsion spring provided on an arm display stand for a display according to an embodiment of the utility model.

[0122] like Figure 26 to Figure 29 As shown, the joint base 130 is a structure having a second hinge hole 131 formed through the center of the main body, a second hinge shaft 132 of a predetermined length penetrating through the second hinge hole, and articulating the first link 121 and the second link 141. The joint base 130 may be referred to as a joint 130 or an arm hinge 130.

[0123] Such a joint base 130 may be configured to be eccentrically arranged at an end of the second hinge axis corresponding to the third connecting member.

[0124] The second hinge shaft 132 is a shaft member having one end inserted into the second hinge hole 131 and the other end extending to the outside of the joint base by a predetermined length.

[0125] In the middle of the length of the second hinge shaft 132 combined with the joint base, another connecting hole formed on the upper end side of the other end of the first connecting member can be rotatably assembled thereto, and another connecting hole formed on the lower end side of one end of the second connecting member can be rotatably assembled thereto. On the other hand, a second torsion spring 140 can be included between the upper end of the other end of the first connecting member and the lower end of one end of the second connecting member to apply elastic force to the second connecting member.

[0126] The joint base 130 can be penetrated to form a first pin hole 131a that intersects with the second hinge hole, and the end of the second hinge shaft 132 corresponding to the joint base can be penetrated to form a second pin hole 132a that intersects with the second hinge hole, which can include a fixing pin 133 that is correspondingly inserted into the first pin hole and the second pin hole that are consistent with each other.

[0127] Thus, the fixing pin is inserted through the first pin hole and the second pin hole respectively and combined with the second hinge shaft. The second hinge shaft inserted into the second hinge hole can be configured by the fixing pin to be combined with the second hinge hole of the joint base to form a fixed shaft component that is difficult to rotate.

[0128] In addition, in the joint base 130, another plane that contacts the plane formed on the outer surface of the second hinge axis is formed on the inner surface of the second hinge hole 131, whereby, when the second hinge axis is correspondingly coupled with the second hinge hole, the fixing force that makes the second hinge axis and the second hinge hole of the joint base difficult to rotate can be improved through the contact between the plane formed on the outer surface of the second hinge axis 132 and the plane formed on the inner surface of the second hinge hole, together with the position fixing force based on the fixing pin.

[0129] like Figure 26 to Figure 29 As shown, the second link 141 is a link member having a substantially circular connection hole formed therethrough so that the lower end as one end is rotatably connected to the second hinge shaft 132, the second hinge shaft 132 is passed through the second hinge hole disposed in the joint base and connected to the upper end as the other end of the first link, and has a predetermined length that is relatively shorter than the length of the first link. The second link 141 may be referred to as an upper arm 141 (upper arm).

[0130] A bracket portion 60 detachably coupled to a display D as a weight object may be fixedly provided at the upper end of the other end of the second coupling member 141 .

[0131] The second torsion spring 140 is an elastic member that is bent and connected at one end to the fixing hole 137a of the stopper disk 137 that is inserted into the second hinge axis so as to be difficult to rotate, and at the other end to the locking groove formed by the depression of one side surface of the second link corresponding to the first link, and applies elastic restoring force when the unfolding posture is changed, so that the second link can rotate upward with the second hinge axis as the rotation center, and is torsionally elastically deformed to generate elastic restoring force when the second link 141 overlaps and is parallel to the first link 121 when the folding posture is changed. The second torsion spring 140 can be called the second elastic member 140.

[0132] In addition to the rotation restriction based on the fixing pin, by forming another planar portion in contact with the planar portions formed on the outer surfaces of both ends of the second hinge axis in the second hinge hole 131 of the joint base 130 combined with the second hinge axis 132, the second hinge axis assembled to the joint base can be combined with the second hinge hole to be difficult to rotate.

[0133] One end of the second hinge shaft 132 may be provided to fasten the second nut 145 for preventing separation through a spacer washer 145a, so that the first and second connectors are difficult to separate. The spacer washer 145a may be referred to as a washer 145a or a disc spring 145a.

[0134] In addition, a circular configuration groove 146 is formed in a recessed side surface at the lower end of one end of the second connecting member 141 corresponding to the other end of the upper end of the first connecting member 121, and at least one circular control disk 136 that is difficult to rotate when the second hinge shaft 132 is assembled is inserted into the circular configuration groove 146. The inner surface of the circular configuration groove 146 may include a locking platform, and the locking platform generates a locking force when it is locked with a position control console 136a protruding from the outer peripheral surface of the circular control disk 136.

[0135] Therefore, when the second connecting member performs a rotating motion around the second hinge axis during the folding posture conversion and the unfolding posture conversion, the position control console of the circular control disk fixed on the second hinge axis is guided to move along the inner surface of the circular configuration groove formed in the second connecting member performing the rotating motion, and is engaged by the engaging platform on the way to generate an engaging force, thereby controlling the rotating movement of the second connecting member at a preset angle.

[0136] At this time, between the stop plate 137 engaged with one end of the second torsion spring 140 and one end of the second connecting member 141 forming the circular configuration groove, an isolation circular plate 135 is provided which is arranged through the second hinge shaft, and a plurality of assembly platforms 135a protruding from the outer edge of the isolation circular plate 135 are assembled correspondingly to the assembly groove 146b recessed on the other side surface of one end of the second connecting member, thereby the isolation circular plate can be fixedly set on one end and one side surface of the second connecting member.

[0137] In this case, one end of the second connecting member that rotates in the opposite direction of the first connecting member during the unfolding posture conversion and the folding posture conversion is prevented from direct contact with the stop disk that is assembled with the second hinge shaft to be difficult to rotate by the isolation member circular disk, thereby preventing damage caused by friction between the components.

[0138] On one side of one end of the second connecting member, it may include a shaft portion 147 forming an opening portion 147a open toward the other end side of the first connecting member, and on the other end of the first connecting member corresponding to the shaft portion, it may include a housing portion 127 forming an opening portion 127a open toward the shaft portion 147 side, and on the side of the other end of the first connecting member forming the housing portion 127, it may include a cover support portion 126 covering and supporting the shaft portion, so as to support the shaft portion whose outer surface is in surface contact with the inner surface of the housing portion so as to be rotatable.

[0139] The cover support portion 126 may be detachably assembled to a side surface of a receiving portion formed on an outer surface of one end of the other end of the first coupling member by a fastening member.

[0140] Thus, a portion of the upper end of the other end of the first connecting member and a portion of the lower end of one end of the second connecting member can be penetrated to form a circular connecting hole that can be rotatably assembled to the second hinge axis, and the remaining portions of the first connecting member and the second connecting member can be rotatably assembled by covering and supporting a cover support portion of the shaft portion configured in the accommodating portion.

[0141] Furthermore, the cable disposed in the cable disposing groove formed recessed on one side surface of the first coupling member may pass through a passage formed between the accommodation portion and the shaft portion.

[0142] like Fig.24 , Fig.25 , Fig.28 , Fig.29 as well as Fig.30As shown, the plurality of third connecting members 151 and 152 are connecting members with a predetermined length, each of which is rotatably connected at both ends to the first base 110a corresponding to the joint base and the joint base 130 connecting the first connecting member and the second connecting member, and is eccentrically arranged on one side of the first connecting member 121. The third connecting member 151 may be referred to as an outer bar 151 or a first bar 151, and the third connecting member 152 may be referred to as an inner bar 152 or a second bar 152.

[0143] A connecting hole may be formed through one end of a pair of third connecting members 151 among the plurality of third connecting members corresponding to the first base 110a, and the connecting hole may be rotatably connected to a first upper pin 114a corresponding to an upper pin hole inserted through a first hinge hole formed to be eccentrically positioned upward from the first base 110a. Another connecting hole may be formed through the other end of a pair of third connecting members 151 among the plurality of third connecting members corresponding to the joint base 130, and the other connecting hole may be rotatably connected to a second upper pin 134a corresponding to an upper pin hole inserted through a second hinge hole formed to be eccentrically positioned upward from the joint base.

[0144] A connecting hole may be formed through one end of another third connecting member 152 between a pair of third connecting members 151 among the plurality of third connecting members, and the connecting hole may be rotatably connected to a first lower pin 114b correspondingly inserted into a lower pin hole formed through the first hinge hole of the first base 110a and positioned eccentrically downward from the lower side. Another connecting hole may be formed through the other end of the third connecting member 152, and the other connecting hole may be rotatably connected to a second lower pin 134b correspondingly inserted into a lower pin hole formed through the second hinge hole of the joint base and positioned eccentrically downward from the lower side.

[0145] The two ends of a pair of third connecting members 151 among the multiple third connecting members 151, 152 are rotatably assembled to the first upper pin 114a of the first base and the second upper pin 134a of the joint base, and the third connecting member 152 arranged between the pair of third connecting members is a connecting member whose two ends are rotatably assembled to the first lower pin 114b of the first base and the second lower pin 134b of the joint base, and is arranged in parallel with each other on one side of the first connecting member with a height difference.

[0146] Preferably, a slit groove can be cut on the outer surface of the first base having the first upper pin and the first lower pin to enable one end of the third connecting member to rotate together with the first connecting member without engagement when the posture is changed, and another slit groove can be cut on the outer surface of the joint base having the second upper pin and the second lower pin to enable the other end of the third connecting member to rotate together with the first connecting member without engagement when the posture is changed.

[0147] like Fig.18 , Fig.19 , Fig. 20 , Fig.21 As shown, the tension spring 150 is a spiral spring member having one end engaged with any one of the third coupling members arranged in pairs on one side of the first coupling member 121, and the other end engaged with another third coupling member arranged between the pair of the third coupling members, so as to apply elastic restoring force to the first coupling member 121 that rotates upward around the first hinge shaft 112 when unfolded, and provide resistance to prevent the load of the display from causing the first coupling member to perform a sharp rotation around the first hinge shaft 112 when folded. The tension spring 150 may be referred to as a third elastic member 150.

[0148] One end of the tension spring 150 can be engaged with a pair of bending pieces arranged in the middle of the length of the first connecting member on one side, and the other end of the tension spring 150 can be engaged with a bending piece formed by bending from the inner side surface of another third connecting member arranged between the pair of third connecting members.

[0149] Such a tension spring 150 may be configured on one side of the first coupling member to be adjacent to the first base, and a side surface of the first coupling member 121 adjacent to the first base may include a cutout portion formed by cutting to ensure space for configuring the tension spring 150 .

[0150] Fig.30It is a schematic diagram showing the action state of the arm display stand for a display according to an embodiment of the present invention when converting from a folded state to an unfolded state. In the folded state where the first coupling member is in parallel contact with the plane, if the first coupling member rotates upward in the clockwise direction in the drawing around the first hinge axis, a pair of third coupling members arranged in parallel on one side of the first coupling member with different height differences from each other and another third coupling member arranged between them rotate upward while maintaining a state parallel to the first coupling member around the first upper pin and the first lower pin eccentrically arranged adjacent to the first hinge axis. Therefore, the engagement position where the other end of the tension spring is connected to the third coupling member moves closer to the engagement position where one end of the tension spring 150 is connected to the other third coupling member, and the distances between the respective two ends of the tension spring 150 gradually decrease in the order of L1 > L2 > L3.

[0151] Thus, when converting the first coupling member from the folded state to the unfolded state for using the display, the elastic restoring force generated during the process of contracting and restoring the tension spring in the longest stretched state to the original state and the elastic restoring force transmitted from the first torsion spring are transmitted to the first coupling member together. Thereby, it is possible to more stably perform the rotational movement of rotating the first coupling member upward around the first hinge axis in a state where a large-sized display with a large weight is mounted. On the other hand, it is possible to improve the design freedom by reducing the elastic coefficient of the first torsion spring that provides the elastic restoring force during the upward rotation for the unfolding conversion of the first coupling member.

[0152] In addition, as Fig.16 shown, when converting the posture from the folded state to the unfolded state, the rotation angle of the initial first coupling member rotating upward around the first hinge axis by the elastic restoring forces of the first torsion spring and the tension spring is set to be similar to the rotation angle of the second coupling member rotating upward around the second hinge axis by the elastic restoring force of the second torsion spring. Thereby, the display can be raised to a specified height while maintaining a horizontal state, and then the display is converted to a vertical state.

[0153] On the contrary, in the unfolded state where the first coupling member rotates upward and stands obliquely, if the first coupling member rotates downward in the counterclockwise direction in the drawing around the first hinge axis, a plurality of the third coupling members rotate downward while maintaining a state parallel to the first coupling member on one side of the first coupling member around the first upper pin and the first lower pin eccentrically arranged adjacent to the first hinge axis. Therefore, the other engagement position where the respective other ends of the tension spring are connected to the third coupling member moves away from the other engagement position side where one end of the tension spring is connected to the other third coupling member, and the distances between the respective two ends of the tension spring 150 gradually increase in the order of L3 < L2 < L1.

[0154] Therefore, when the first link is switched from the unfolded state to the folded state for storing the used display, an elastic restoring force can be generated during the process of the tension spring, which is in a state of contraction and restoration to the original state when unfolded, being stretched along the length direction.

[0155] The elastic restoring force generated at this time can disperse the load of the heavy large display mounted on the bracket part of the second connecting member, thereby preventing the first connecting member from suddenly rotating downward around the first hinge axis while performing the rotation action more stably. On the other hand, the design freedom can be improved by reducing the elastic coefficient of the first torsion spring.

[0156] In addition, when the posture is changed from the unfolded state to the folded state, in the initial stage, the first link member rotates downward around the first hinge axis. Fig.17 As shown, the display mounted on the bracket portion of the second connecting member can be lowered while maintaining a vertical state until the lower end of one end of the second connecting member is engaged and restricted by the locking portion.

[0157] Furthermore, the plurality of third connecting members 151, 152 are eccentrically arranged in multiple rows parallel to the first connecting member on one side of the first connecting member 121, thereby enabling the external force indirectly transmitted to the first connecting member due to the load of the display as a heavy object during the upward rotation when converting from the folded state to the unfolded state or the downward rotation when converting from the unfolded state to the folded state to be dispersed through the third connecting members eccentrically arranged in multiple rows on the outer side of the first connecting member. Therefore, deformation or damage of the first connecting member can be prevented without excessively increasing the section modulus and strength of the first connecting member as a core component, thereby realizing an optimal arm display stand suitable for carrying and using a display that becomes heavier due to its large size, and reducing the elastic force that the torsion spring that applies elastic force to the first connecting member should bear, thereby reducing the size of the torsion spring, thereby reducing the size of the base, and obtaining an advantage that is conducive to thinning.

[0158] Fig.31 Detailed diagram of a bracket portion of an arm display stand for a display according to an embodiment of the present invention. Fig.32 The present invention is a detailed view showing a locking portion provided in a display arm display stand according to an embodiment.

[0159] like Fig.31 and Fig.32As shown, the bracket portion 60 may have a rotating plate 61 in a substantially quadrilateral plate shape rotatably coupled to the front end of a rotating support shaft 64 provided at the other end of the second coupling member 141, and connected to the back of the display D in a detachable manner. The bracket portion 60 may be referred to as a bracket 60. The bracket 60 may be detachably coupled to the back cover of the display D. The display D may have an LCD panel or an OLED panel, which is opposite to the back cover and displays an image. If the display D has an LCD panel, the display D may include a backlight unit that provides light to the LCD panel.

[0160] The rotation support shaft 64 is a shaft member of a predetermined length that is assembled to an assembly hole 64a formed through the upper end as the other end of the second link so as to be difficult to rotate and is assembled to be difficult to come off from the assembly hole by a nut member.

[0161] Between the rotating plate 61 rotatably assembled at the front end of the rotating support shaft and the other end of the second connecting member that passes through the assembly hole, a roughly disc-shaped spacing retaining pad 63 in contact with the back side of the rotating plate can be included to enable the rotating plate to rotate smoothly.

[0162] In addition, the other end of the second connecting member 141 corresponding to the rotating plate may include a pin support body 65, and a locking pin component 65a is arranged at the front end of the pin support body 65. The portion of the rotating plate 61 corresponding to the locking pin component may include an arc-shaped guide slit 61a formed through the rotating plate 61 at a rotation angle of approximately 90 degrees to guide the movement of the locking pin component.

[0163] Preferably, a cable lead-out hole 69 is formed through one side of the rotating plate 61 for leading out and passing the cable extending from the display to the second connecting member side, and another cable lead-out hole is formed through the upper end of the second connecting member for leading out and passing the cable through the cable lead-out hole to the first connecting member side.

[0164] Thus, the rotating plate detachably connected to the back surface of the display can be rotated approximately 90 degrees in the forward or reverse direction with the rotating support shaft as the rotation center, so that the display can be rotated and moved.

[0165] In addition, cables such as power cables or video cables extending from the display can be led out to the first connecting member side by passing through the cable lead-out hole formed in the rotating plate and the second connecting member, and then arranged in a cable configuration groove recessed in a side surface of the first connecting member via a passage formed between the accommodating portion and the shaft portion, thereby enabling the wiring to be handled neatly in appearance.

[0166] When the rotating plate rotates, the engaging pin member is guided and moved along the arc-shaped guide slit to generate an engaging force that is restricted by the engagement, thereby making it possible to easily and freely change the display to a landscape mode or a portrait mode in accordance with user preferences.

[0167] like Fig.31 and Fig.32 As shown, with regard to the locking portion 70, the end of the second connecting member 141 corresponding to the joint base can be selectively engaged to maintain the folded state formed by folding the first connecting member 121 and the second connecting member 141 around the second hinge axis 132, or the engagement restriction on the end of the second connecting member corresponding to the joint base can be selectively released so that the first connecting member and the second connecting member can rotate upward in opposite directions around the first hinge axis and the second hinge axis to convert to the unfolded state.

[0168] This locking portion 70 may include: a collision block 71, which is detachably arranged at one end of the second connecting member 141 corresponding to the joint base; a push latch 72, which has a snap fit that generates a fixing force by inserting the lower end as the end of the collision block; and a latch retainer 73, which fixes the push latch on the plane where the base is fixedly set.

[0169] At this time, although the locking portion is illustrated and described as being provided by a push-type latch, it is not limited to this, and an actuator such as an electromagnetic valve or a manual locking structure such as a locking pin may be used, which generates an external force causing a locking limit force at one end of the second connecting member when power is applied when the overlapping first connecting member and the second connecting member are close to each other on a plane.

[0170] Reference Figures 16 to 32, an arm display stand for a monitor may include: a base, having a first base and a second base and fixedly arranged on a plane, the first base having a first hinge axis combined with a first hinge hole formed through a main body, and an integrated hinge axis on a side surface of the second base; a first connecting piece, one end of which is rotatably connected to the first hinge axis and the integrated hinge axis; a pair of first torsion springs are respectively arranged on the first hinge axis and the integrated hinge axis, each with one end engaged with the first base and the second base, and the other end of each with one end of the first connecting piece, to apply elastic force to the first connecting piece; a joint base, having a second hinge axis combined with a second hinge hole formed through a main body; a second connecting piece, one end of which is rotatably connected to the second hinge axis rotatably connected to the other end of the first connecting piece; a second torsion spring, one end of which is engaged with the joint base, and the other end of which is engaged with the second connecting piece One end is engaged and connected to apply elastic force to the second connecting piece; a plurality of third connecting pieces, each of which is rotatably connected to the first base and the joint base at both ends, and is arranged on one side of the first connecting piece; a tension spring, one end of which is engaged and connected to a third connecting piece among the plurality of the third connecting pieces, and the other end of which is engaged and connected to another third connecting piece among the plurality of the third connecting pieces, to apply elastic force to the first connecting piece; a bracket part, having a rotating plate rotatably combined with the front end of a rotating support shaft arranged at the other end of the second connecting piece, and connected to the back of the display; and a locking part, which engages and restricts the second connecting piece to maintain the first connecting piece and the second connecting piece in a folded state in which the first connecting piece and the second connecting piece are folded around the first hinge axis and the second hinge axis, or releases the engagement restriction with the second connecting piece to switch to an unfolded state in which the first connecting piece and the second connecting piece are unfolded by rotating around the first hinge axis and the second hinge axis.

[0171] The joint base can be penetrated to form a first pin hole that intersects with the second hinge hole, and the end of the second hinge shaft corresponding to the joint base can be penetrated to form a second pin hole that intersects with the second hinge hole. By inserting the fixing pins corresponding to the first pin hole and the second pin hole that are consistent with each other, the second hinge shaft and the second hinge hole can be combined to be difficult to rotate.

[0172] One bent end of the second torsion spring can be snap-connected to the fixing hole of the stop disk assembled with the second hinge shaft to form a difficult-to-rotate stopper, and the other end can be snap-connected to a locking groove formed by a depression on a side surface of one end of the second connecting member corresponding to the first connecting member.

[0173] An isolating circular disk penetrating the second hinge shaft may be provided between the stop disk and one end of the second connecting member, and a plurality of assembly stations protruding from the outer edge of the isolating circular disk may be fixed by correspondingly assembling in an assembly groove recessed at one end of the second connecting member.

[0174] A circular configuration groove may be formed in a recessed manner on a side surface at one end of the second connecting member, and at least one circular control disk assembled with the second hinge axis to be difficult to rotate may be inserted into the circular configuration groove and configured accordingly. The inner surface of the circular configuration groove may include a locking table that generates a locking force when engaged with a position control console protruding from the outer peripheral surface of the circular control disk.

[0175] One side of one end of the second connecting member may include an axis portion forming an opening portion open to the other end side of the first connecting member, and the other end of the first connecting member corresponding to the axis portion may include a housing portion forming an opening portion open to the axis portion side, and a side surface of the other end of the first connecting member forming the housing portion may include a cover support portion that covers and supports the axis portion so as to support the axis portion whose outer surface is in surface contact with the inner surface of the housing portion so as to be rotatable.

[0176] The other end of the second connecting member where the rotating support shaft is arranged may include a pin support body with a locking pin component arranged at the front end, and the rotating plate may include an arc-shaped guide slit, which is formed through a rotation angle of 90 degrees to guide the locking pin component to move.

[0177] Reference Figures 33 to 39 , the display display frame 2100 can be folded or unfolded. One side (e.g., the lower part) of the display display frame 2100 can be mounted on a relative object, and the display D can be mounted on the other side (e.g., the upper part) of the display display frame 2100. For example, the relative object for the display display frame 2100 to be set can be a table, or a wall, or a bag or shell that the user can carry. The display display frame 2100 can be referred to as a display arm 2100, or a support 2100, or a display frame 2100, or a display arm display frame 2100. The display display frame 2100 and the display D can be collectively referred to as a display device. The display D can be referred to as a display unit D, or a display module D, or a head D.

[0178] Reference Fig.33The display display stand 2100 may include a base 210, a lower arm 221, a first elastic member 220, a joint 230, an upper arm 241, a second elastic member 240, bars 251, 252, a third elastic member 250, and a bracket 60. The lower arm 221 and the upper arm 241 may be collectively referred to as couplings 221, 241 or foldable couplings 221, 241. The bars 251, 252 may be collectively referred to as auxiliary couplings 251, 252 or supporting couplings 251, 252. The foldable couplings 221, 241 and the supporting couplings 251, 252 may include metal materials. On the other hand, referring to Fig.15 or Fig.32 The aforementioned locking portion 70 may also be applied to the display display stand 2100 .

[0179] Reference Fig.34 and 35 The base 210 may be mounted on an object (not shown). The object may provide a plane for mounting the base 210. The base 210 may include a first base 210a and a second base 210b adjacent to each other. Alternatively, the first base 210a and the second base 210b may be formed in one body.

[0180] The first base 210a may include a first bottom 217a, a first retainer 218a and a first fixer 219a. The first bottom 217a may be in a plate shape and placed on a relative object. The first retainer 218a may be adjacent to the side (i.e., the left side) of the first bottom 217a farthest from the second base 210b and protrude upward from the first bottom 217a. The first retainer 218a may be referred to as a first hinge base 218a. The first fixer 219a may be adjacent to the other side of the first bottom 217a and formed on the first bottom 217a.

[0181] The second base 210b may include a second bottom 217b, a second retainer 218b and a second fixer 219b. The second bottom 217b may be in a plate shape and placed on a relative object. The second retainer 218b may be adjacent to the farthest side (i.e., right side) of the second bottom 217b from the first base 210a and protrude upward from the second bottom 217b. The second retainer 218b may be referred to as a second hinge base 218b. The second fixer 219b may be adjacent to the other side of the second bottom 217b and formed on the second bottom 217b.

[0182] The body 2210 of the lower arm 221 may be in a bar shape. The hole 222 may be formed in the body 2210 of the lower arm 221. The groove 223 may be formed in the body 2210 of the lower arm 221, and the cable may be disposed in the groove 223. The lower arm 221 may be referred to as a first coupling member 221. The cable may be electrically connected to the display D.

[0183] A pair of bottom joints 221a, 221b may protrude from the lower side of the main body 2210 of the lower arm 221 and be spaced apart from each other along the lower side. The pair of bottom joints 221a, 221b may be referred to as a pair of bottom connecting portions 221a, 221b. The pair of bottom joints 221a, 221b may be arranged between the first retainer 218a of the first base 210a and the second retainer 218b of the second base 210b. The pair of bottom joints 221a, 221b may be respectively in a ring shape. The first bottom joint 221a may be adjacent to the left side of the main body 2210 of the lower arm 221 and located on the right side surface of the first retainer 218a. The second bottom joint 221b may be adjacent to the right side of the main body 2210 of the lower arm 221 and located on the left side surface of the second retainer 218b.

[0184] The first hinge shaft 212 can extend in a direction intersecting with the first retainer 218a and pass through the first bottom joint 221a. The first hinge shaft 212 can be fixed to the first retainer 218a or formed as one body with the first retainer 218a. The washer 225a can be opposite to the first retainer 218a across the first bottom joint 221a, and the first hinge shaft 212 can pass through the washer 225a. A fastening member 225 such as a nut can be fastened to the end of the first hinge shaft 212 and pressurize the washer 225a. The washer 225a can be referred to as a disc spring 225a or an isolation washer 225a. The first bottom joint 221a can be rotatably coupled to the first hinge shaft 212.

[0185] The first hinge shaft 212a can extend in a direction intersecting with the second retainer 218b and pass through the second bottom joint 221b. The first hinge shaft 212a can be fixed to the second retainer 218b or formed as one body with the second retainer 218b. The washer 225a can be opposite to the second retainer 218b across the second bottom joint 221b, and the first hinge shaft 212a can pass through the washer 225a. A fastening member 225 such as a nut can be fastened to the end of the first hinge shaft 212a and pressurize the washer 225a. The washer 225a can be referred to as a disc spring 225a or an isolation washer 225a. The second bottom joint 221b can be rotatably coupled to the first hinge shaft 212a.

[0186] The first left elastic member 220a of the first elastic member 220 may be a torsion spring wound in a spiral form along the side of the first hinge shaft 212, which may surround the washer 225a. One end of the first left elastic member 220a may be engaged with the first holder 219a of the first base 210a, and a portion of the first left elastic member 220a adjacent to the other end of the first left elastic member 220a may support one side of the body 2210 of the lower arm 221.

[0187] The first right elastic member 220b of the first elastic member 220 may be a torsion spring wound in a spiral form along the side of the first hinge shaft 212a, which may surround the washer 225a. One end of the first right elastic member 220b may be engaged with the second fixture 219b of the second base 210b, and a portion of the first right elastic member 220b adjacent to the other end of the first right elastic member 220b may support one side of the main body 2210 of the lower arm 221.

[0188] Therefore, if the user moves the lower arm 221 in the counterclockwise direction (refer to Fig.34 The lower arm 221 is folded toward the base 210 by rotating the lower arm 221 in the clockwise direction (refer to FIG. 21 ). The first left elastic member 220a and the first right elastic member 220b supporting the lower arm 221 can be elastically deformed. Fig.34 When the lower arm 221 is unfolded from the base 210, the first left elastic member 220a and the first right elastic member 220b will recover and enable the lower arm 221 to rotate in the clockwise direction CW. That is, the lower arm 221 can be hinged to the base 210.

[0189] On the other hand, the first left elastic member 220 a and the first right elastic member 220 b may be replaced by a single first elastic member 220 that surrounds the sides of the first hinge axis 212 and the first hinge axis 212 a .

[0190] Reference Fig.36 and 37 , a pair of top joints 227a, 227b may protrude from the upper side of the main body 2210 of the lower arm 221 and be spaced apart from each other along the upper side. The pair of top joints 227a, 227b may be referred to as a pair of top connecting portions 227a, 227b. The first top joint 227a may be adjacent to the left side of the main body 2210 of the lower arm 221 and may be connected to the first bottom joint 221a (refer to Fig.35 ) opposite. The first top joint portion 227a may be in a ring shape. The second top joint portion 227b may be adjacent to the right side of the main body 2210 of the lower arm 221 and may be opposite to the second bottom joint portion 221b (refer to Fig.35) relative (opposite).

[0191] The main body 2410 of the upper arm 241 may be in the shape of a bar. Fig.33 ) may be formed on the main body 2410 of the upper arm 241. The length of the upper arm 241 may be shorter than the length of the lower arm 221 (refer to Fig.33 ). The upper arm 241 may be referred to as a second link 241.

[0192] A pair of connection parts 246, 247 may protrude from the lower side of the main body 2410 of the upper arm 241 and be spaced apart from each other along the lower side. A pair of connection parts 246, 247 may be disposed between a pair of top joints 227a, 227b of the lower arm 221. The first connection part 246 may be in a ring shape. The first connection part 246 may be adjacent to the left side of the main body 2410 of the upper arm 241 and located on the right side surface of the first top joint 227a. The second connection part 247 may be adjacent to the right side of the main body 2410 of the upper arm 241 and inserted into the second top joint 227b.

[0193] The joint 230 may be opposite to the first connection portion 246 across the first top joint 227a. The joint 230 may be located on the left side of the first top joint 227a. The joint 230 may be cylindrical in shape as a whole. The joint 230 may be referred to as a joint base 230 or an arm hinge 230.

[0194] The second hinge axis 232 can be oriented toward the first hinge axis 212, 212a (refer to Fig.35 ) and extends in a direction parallel to the first connection portion 246 and the first top joint portion 227a. The second hinge shaft 232 can be fixed to the joint 230 or formed as one body with the joint 230. The washer 245a can be opposite to the first top joint portion 227a across the first connection portion 246, and the second hinge shaft 232 can pass through the washer 245a. A fastening member 245 such as a nut can be fastened to the end of the second hinge shaft 232 and pressurize the washer 245a. The washer 245a can be referred to as a disc spring 245a or an isolation washer 245a. The first top joint portion 227a and the first connection portion 246 can be rotatably coupled to the second hinge shaft 232.

[0195] The second elastic member 240 may be a torsion spring wound in a spiral form along the side of the second hinge shaft 232, which may surround the washer 245a. One end of the second elastic member 240 may be engaged with a hole formed in the fixing ring 237, and a portion of the second elastic member 240 adjacent to the other end of the second elastic member 240 may support one side of the body 2410 of the upper arm 241. Here, the fixing ring 237 may be a member fixed to the second hinge shaft 232 between the washer 245a and the fastening member 245.

[0196] Thus, if the user moves the upper arm 241 in the clockwise direction (see Fig.33 The second elastic member 240 supporting the upper arm 241 can be elastically deformed. If the user rotates the upper arm 241 in the counterclockwise direction (refer to Fig.33 The second elastic member 240 can be restored and the upper arm 241 can be rotated in the counterclockwise direction CCW. That is, the upper arm 241 can be hinged to the lower arm 221.

[0197] At this time, the upper arm 241 can be inserted into the recessed portion 222g (see Fig.34 ). That is, the upper arm 241 can be stored in the recessed portion 222g of the lower arm 221, and the recessed portion 222g can be referred to as a storage groove 222g. Thus, the upper arm 241 folded to the lower arm 221 can overlap the lower arm 221 in a state parallel to the lower arm 221.

[0198] On the other hand, the second top coupling portion 227b may include a fixing seat 227ba and a finger-shaped portion 227bb. The fixing seat 227ba may be formed on the right side of the main body 2210 of the lower arm 221. The finger-shaped portion 227bb may be bent and extended from the fixing seat 227ba. The finger-shaped portion 227bb may be in an arc shape and may be an open ring. The second connecting portion 247 may be a circle portion inserted into the finger-shaped portion 227bb and extending along the finger-shaped portion 227bb. The cable retainer 226 may include a block 226a and an end 226b. The block 226a may be combined with the fixing seat 227ba, and the end 226b may be bent and extended from the block 226a. The end 226b and the finger-shaped portion 227bb may form a circle as a whole. The groove 223 (refer to Fig.34 ) can pass through the circle formed by the end portion 226b and the finger-shaped portion 227bb and pass through the hole 242 of the upper arm 241 (refer to Fig.33 ).

[0199] Bracket 60 (see Fig.33) may be mounted on the upper end of the upper arm 241. The bracket 60 may be in the shape of a plate. The bracket 60 may be referred to as a bracket portion 60. The bracket 60 may be detachably coupled to the rear cover of the display D. The display D may have an LCD panel or an OLED panel that is opposite to the rear cover and displays an image. If the display D has an LCD panel, the display D may include a backlight unit that provides light to the LCD panel. Fig.14 and Fig.15 Description or reference to the bracket 60 Fig.31 and Fig.32 The description of the bracket 60 can be applied to Fig.33 The bracket 60.

[0200] Thus, the height and angle of the display D mounted on the bracket 60 of the display display stand 100 can be changed corresponding to the folding and unfolding of the foldable couplings 221 and 241. That is, the user can store or carry the display device by folding the foldable couplings 221 and 241. Alternatively, the user can view the display device by unfolding the foldable couplings 221 and 241.

[0201] on the other hand, Fig.33 The position of the arc-shaped guide slit 61a of the bracket 60 can be Fig.14 and Fig.15 The position of the arc-shaped guide slit 61a of the bracket 60 or Fig.31 and Fig.32 The positions of the arc-shaped guide slits 61 a of the bracket 60 are different. Fig.33 The bracket 60 may include an arc-shaped pressed portion 66 opposite to the arc-shaped guide slit 61 a via the rotation support shaft 64 .

[0202] Reference Figures 38 to 40 The joint 230 may be opposite to the first retainer 218a of the first base 210a. For example, the first retainer 218a may include a first portion 218aa and a second portion 218ab. The second portion 218ab may be formed on the outer side of the first portion 218aa and form a step that becomes lower from the first portion 218aa.

[0203] The bars 251 and 252 (bars) may be located between the joint 230 and the first retainer 218a and connect the joint 230 and the first retainer 218a. The bars 251 and 252 may include a metal material.

[0204] The first upper pin 214a may extend in a direction parallel to the first hinge axis 212 and be coupled to the first portion 218aa of the first retainer 218a. The first upper pin 214a may be eccentric to the upper side from the first hinge axis 212. The first lower pin 214b may extend in a direction parallel to the first hinge axis 212 and be coupled to the second portion 218ab of the first retainer 218a. The first lower pin 214b may be eccentric to the lower side from the first hinge axis 212.

[0205] The second upper pin 234a may extend in a direction parallel to the second hinge shaft 232 and be coupled to the joint 230. The second upper pin 234a may be eccentric to the upper side from the second hinge shaft 232. The second lower pin 234b may extend in a direction parallel to the second hinge shaft 232 and be coupled to the joint 230. The second lower pin 234b may be eccentric to the lower side from the second hinge shaft 232.

[0206] For example, the distance between the first upper pin 214a and the first lower pin 214b may be the same as the distance between the second upper pin 234a and the second lower pin 234b.

[0207] The inner bar 251 may extend long along the lower arm 221. One end (i.e., the lower end) of the inner bar 251 may be rotatably coupled to the first upper pin 214a coupled to the first portion 218aa of the first retainer 218a. For example, a lower ring may be formed at one end (i.e., the lower end) of the inner bar 251, and the first upper pin 214a may penetrate the lower ring. The other end (i.e., the upper end) of the inner bar 251 may be rotatably coupled to the second upper pin 234a coupled to the joint 230. For example, a top ring may be formed at the other end (i.e., the upper end) of the inner bar 251, and the second upper pin 234a may penetrate the top ring.

[0208] At this time, the first inner groove 210Sa (refer to Fig.33 ) may be formed in the first portion 218aa of the first retainer 218a and extend along the moving trajectory of the inner rod 251 rotating around the first upper pin 214a. The second inner groove 230Sa (see Fig.34 ) may be formed at the joint 230 and extend along a moving trajectory of the inner rod 251 rotating about the second upper pin 234a.

[0209] The outer bar 252 may extend long along the inner bar 251. The outer bar 252 may be adjacent to and spaced apart from the inner bar 251. One end (i.e., the lower end) of the outer bar 252 may be rotatably coupled to the first lower pin 214b coupled to the second portion 218ab of the first retainer 218a. For example, a lower ring may be formed at one end (i.e., the lower end) of the outer bar 252, and the first lower pin 214b may penetrate the lower ring. The other end (i.e., the upper end) of the outer bar 252 may be rotatably coupled to the second lower pin 234b coupled to the joint 230. For example, a top ring may be formed at the other end (i.e., the upper end) of the outer bar 252, and the second lower pin 234b may penetrate the top ring.

[0210] At this time, the first outer groove 210Sb (refer to Fig.33 ) may be formed in the second portion 218ab of the first retainer 218a and extend along the movement trajectory of the outer rod 252 rotating around the first lower pin 214b. The second outer groove 230Sb (refer to Fig.34 ) may be formed at the joint 230 and extend along a moving trajectory of the outer rod 252 that rotates around the second lower pin 234b.

[0211] Thus, the outer rod 252 can be spaced to the left from the inner rod 251 and offset to the lower side relative to the inner rod 251. The first upper pin 214a, the second upper pin 234a, the first lower pin 214b and the second lower pin 234b can form a pivot point of a four-bar linkage. Even if the inner rod 251 and the outer rod 252 rotate in the clockwise direction CW or the counterclockwise direction CCW, the angle of the joint 230 relative to the base 210 can be kept constant. In this case, the angle of the second hinge shaft 232 fixed to the joint 230 can also be kept constant, and the fixing ring 237 fixed to the second hinge shaft 232 can support one end of the second elastic member 240. That is, the joint 230, the rods 251, 252 and the first retainer 218a can support the elastic member 240, and the elastic member 240 can make the upper arm 241 combined with the bracket 60 and the display D stand up smoothly.

[0212] The inner rod 251 and the outer rod 252 may include a pressed portion, respectively. The pressed portion may be formed on the side of each of the rods 251 and 252 and improve the rigidity of the rods 251 and 252. For example, the inner rod 251 may include a first inner rod 2511 and a second inner rod 2512.

[0213] Reference Fig.38, both ends of the first inner rod 2511 may be rotatably coupled to the first upper pin 214a and the second upper pin 234a. The rib 2511R may be bent from the first long side 2511L1 of the first inner rod 2511 toward the lower arm 221 and extend along the first long side 2511L1. A pair of slits 2511s may be formed at both sides of the rib 2511R. The rib 2511R may improve the rigidity of the first inner rod 2511.

[0214] A plurality of holes 2511H may be formed in the first inner rod 2511 and spaced apart from each other in the length direction of the first inner rod 2511. The first hole 2511Ha may be adjacent to one end of the first inner rod 2511, the second hole 2511Hb may be located at the center of the first inner rod 2511, and the third hole 2511Hc may be adjacent to the other end of the first inner rod 2511.

[0215] Reference Fig.39 , the second inner rod 2512 may be located on the left side of the first inner rod 2511. The shape of the second inner rod 2512 may be generally similar to that of the first inner rod 2511. Both ends of the second inner rod 2512 may be rotatably coupled to the first upper pin 214a and the second upper pin 234a. The pressed portion 2512P may be formed by being pressed from the right side of the second inner rod 2512 toward the left side, and extends along the length direction of the second inner rod 2512. The width Wp of the pressed portion 2512P may be slightly smaller than the width W1 of the second inner rod 2512. That is, the first long side of the pressed portion 2512P may be adjacent to the first long side 2512L1 of the second inner rod 2512, and the second long side of the pressed portion 2512P may be adjacent to the second long side 2512L2 of the second inner rod 2512. The pressed portion 2512P may improve the rigidity of the second inner rod 2512.

[0216] A plurality of holes 2512H may be formed in the second inner rod 2512 and spaced apart from each other in the length direction of the second inner rod 2512. The first hole 2512Ha of the second inner rod 2512 may be aligned with the first hole 2511Ha of the first inner rod 2511, the second hole 2512Hb of the second inner rod 2512 may be aligned with the second hole 2511Hb of the first inner rod 2511, and the third hole 2512Hc of the second inner rod 2512 may be aligned with the third hole 2511Hc of the first inner rod 2511. A plurality of pressure-receiving portions 2512P may be located between the plurality of holes 2512H. The first pressure-receiving portion 2512Pa may be located between the first hole 2512Ha and the second hole 2512Hb and extend long. The second pressure-receiving portion 2512Pb may be located between the second hole 2512Hb and the third hole 2512Hc and extend long. The plurality of pressure receiving portions 2512P can increase the rigidity of the second inner rod 2512 .

[0217] Each of the plurality of fastening members Fa, Fb, Fc such as screws can respectively penetrate the plurality of holes 2512H of the second inner rod 2512 and be respectively fastened to the plurality of holes 2511H of the first inner rod 2511. Thus, the second inner rod 2512 can be combined with the first inner rod 2511, and the inner rod 251 can have greater rigidity.

[0218] Reference Fig.40 The outer rod 252 may be in the shape of an inner rod 251 turned over as a whole. Both ends of the outer rod 252 may be rotatably coupled to the first lower pin 214b and the second lower pin 234b. The rib 252R may be bent from the second long side 252L2 of the outer rod 252 toward the lower arm 221 and extend along the second long side 252L2. A pair of slits 252s may be formed on both sides of the rib 252R. The rib 252R may improve the rigidity of the outer rod 252.

[0219] The pressed portion 252P may be formed by being pressed from the right side of the outer rod 252 toward the left side, and extends along the length direction of the outer rod 252. The width Wpp of the pressed portion 252P may be about half of the width W2 of the outer rod 252. That is, the pressed portion 252P may have a relatively narrow width compared to the width of the outer rod 252. However, the length of the pressed portion 252P may be slightly smaller than the length of the outer rod 252. The pressed portion 252P may improve the rigidity of the outer rod 252.

[0220] Thus, the inner rod 251 and the outer rod 252 can have greater rigidity, so the load of the bracket 60 and the display D transmitted to the inner rod 251 and the outer rod 252 is difficult to deform the inner rod 251 and the outer rod 252. That is, the phenomenon of vibration or noise caused by bending or twisting of the inner rod 251 and the outer rod 252 or contact with each other can be minimized.

[0221] Refer again Fig.33 and 34 , the third elastic member 250 may be located between the inner rod 251 and the lower arm 221. The third elastic member 250 may be a torsion spring, and the length of the third elastic member 250 may vary. The third elastic member 250 may be a tension spring. One end of the third elastic member 250 may be fixed to a fixing portion 251F formed on one side of the first inner rod 2511, and the other end of the third elastic member 250 may be fixed to a fixing portion 221F formed on one side of the lower arm 221. The fixing portion 251F may be adjacent to the first base 210a, and the fixing portion 221F may be located at a position farther away from the first base 210a than the fixing portion 251F.

[0222] If the lower arm 221 and the rods 251 and 252 rotate in the CCW direction, the third elastic member 250 may be elastically deformed and lengthened. That is, the third elastic member 250 may minimize the lower arm 221 and the rods 251 and 252 from being suddenly folded due to the load of the bracket 60 and the display D.

[0223] If the lower arm 221 and the rods 251 and 252 are rotated in the clockwise direction CW, the third elastic member 250 is restored and shortened in length. That is, the elastic force of the third elastic member 250 can assist the rotation of the lower arm 221 and the rods 251 and 252.

[0224] Reference Figures 1 to 40 The display device may include: a display; an upper arm coupled to the rear of the display; a lower arm hingedly connected to the lower arm; a base hingedly connected to the base; a joint connecting the upper arm and the lower arm; a first elastic member providing an elastic force to the lower arm relative to the base; a second elastic member providing an elastic force to the upper arm relative to the joint; an inner rod having two ends pivotally coupled to the base and the joint; and an outer rod having two ends pivotally coupled to the base and the joint.

[0225] The heights of the two ends of the outer rod relative to the base may be different from the heights of the two ends of the inner rod relative to the base.

[0226] The display device may further include: a first hinge axis, providing a rotation center axis of the lower arm, and being fixed to the base; a second hinge axis, providing a rotation center axis of the upper arm, and being fixed to the joint; a first upper pin, eccentrically disposed from the first hinge axis toward a first direction, coupled to the base, and one end of the inner rod being rotatably coupled to the first upper pin; a first lower pin, eccentrically disposed from the first hinge axis toward a second direction, coupled to the base, and one end of the outer rod being rotatably coupled to the first lower pin; a second upper pin, eccentrically disposed from the second hinge axis toward the first direction, coupled to the joint, and the other end of the inner rod being rotatably coupled to the second upper pin; and a second lower pin, eccentrically disposed from the second hinge axis toward the second direction, coupled to the joint, and the other end of the outer rod being rotatably coupled to the second lower pin.

[0227] A distance between the first upper pin and the first lower pin may be the same as a distance between the second upper pin and the second lower pin.

[0228] The first elastic member may surround a side of the first hinge axis and support one side of the lower arm, and the second elastic member may surround a side of the second hinge axis and support one side of the upper arm.

[0229] One end of the first elastic member may be fixed to the base, and one end of the second elastic member may be fixed to the second hinge shaft.

[0230] The lower arm may extend long, the inner rod may be adjacent to and extend along one long side of the lower arm, and the outer rod may extend along and be spaced apart from the inner rod.

[0231] The inner rod may include a pressure receiving portion formed by being pressed from one surface of the inner rod toward the other surface.

[0232] The inner rod may include: a first inner rod facing the one long side of the lower arm; and a second inner rod opposite the lower arm with the first inner rod interposed therebetween and coupled to the first inner rod.

[0233] The first inner rod may include a rib bent from one side of the first inner rod toward the lower arm.

[0234] The display device may further include a fastening member for combining the second inner rod with the first inner rod, and the second inner rod may include a hole through which the fastening member passes; and a pressure receiving portion formed between the holes.

[0235] The outer rod may include: a pressure receiving portion formed by being pressed from one surface of the outer rod to the other surface; and a rib bent from one side of the outer rod toward the lower arm.

[0236] The display device may further include a third elastic member, which is located between the lower arm and the inner rod and has one end fixed to the inner rod and the other end fixed to the lower arm, and the third elastic member can be elastically deformed when the lower arm is folded toward the base, and the third elastic member can be restored when the lower arm is unfolded from the base.

[0237] The lower arm may include: a main body extending long; a pair of bottom joints protruding from one end of the main body and rotatably coupled to the base; and a pair of top joints protruding from the other end of the main body, the upper arm may be located between the pair of top joints and rotatably coupled to the pair of top joints, the joint may be coupled to any one of the pair of top joints, the inner rod and the outer rod may be adjacent to one long side of the main body and connect the joint and the base.

[0238] The display device may further include a bracket for coupling the upper arm to the display.

[0239] Any of the aforementioned embodiments or other embodiments of the present invention are not exclusive or different from each other. The various components or functions of any of the aforementioned embodiments or other embodiments of the present invention may be mixed or combined.

[0240] For example, it means that the A structure described in a specific embodiment and / or drawings can be combined with the B structure described in other embodiments and / or drawings. That is, even if the combination between the structures is not directly described, it means that they can be combined unless it is clearly stated that they cannot be combined.

[0241] The detailed descriptions described above should not be interpreted as limiting in all aspects, but should be understood as exemplary. The scope of the utility model should be determined by the reasonable interpretation of the attached claims, and all changes within the equivalent scope of the utility model fall within the scope of the utility model.

Claims

1. A display device, wherein: include: A display module, including a display panel; an upper arm coupled to the rear of the display module; A lower arm extending long, the upper arm being hingedly connected to the lower arm; a base, the lower arm being hingedly connected to the base; an arm hinge assembly connecting the upper arm and the lower arm; an inner rod extending along the length direction of the lower arm, one end of which is pivotally connected to the base and the other end of which is pivotally connected to the arm hinge assembly; as well as an outer rod extending along the inner rod, one end of which is pivotally connected to the base and the other end of which is pivotally connected to the arm hinge assembly, the outer rod being spaced apart from the inner rod, The inner rod comprises: a first inner rod facing the lower arm; as well as, The second inner rod is located between the first inner rod and the outer rod and is combined with the first inner rod.

2. The display device according to claim 1, wherein: The first inner rod includes a rib bent from an edge of the first inner rod toward the lower arm at an edge in a longitudinal direction of the first inner rod.

3. The display device according to claim 1, wherein: The first inner rod comprises a plurality of first holes sequentially formed along the length direction of the first inner rod. The second inner rod comprises a plurality of second holes sequentially formed along the length direction of the second inner rod and corresponding to the plurality of first holes. The inner rod further includes a plurality of fastening members inserted into the plurality of first holes and the plurality of second holes to fix the second inner rod to the first inner rod.

4. The display device according to claim 1, wherein: The outer rod includes a rib bent from the edge of the outer rod toward the lower arm at an edge of the outer rod in a longitudinal direction of the outer rod.

5. The display device according to claim 4, wherein: The outer rod includes a plurality of slits formed at edges of the outer rod at both ends of the rib.

6. The display device according to claim 1, wherein: The base comprises: A first hinge shaft, providing a pivot axis for the lower arm, fixed to the base; a first upper pin, spaced apart from the first hinge axis by a first distance in a radial direction of the first hinge axis, coupled to the base, one end of the inner rod being pivotally connected to the first upper pin; and a first lower pin, spaced apart from the first hinge axis by a second distance in the radial direction of the first hinge axis, coupled to the base, one end of the outer rod being pivotally connected to the first lower pin; The arm hinge assembly comprises: joint base; a second hinge axis, providing a pivot axis for the upper arm, coupled to the joint base; a second upper pin, spaced apart from the second hinge axis by a third distance in the radial direction of the second hinge axis, coupled to the joint base, the other end of the inner rod being pivotally connected to the second upper pin; and A second lower pin is separated from the second hinge axis by a fourth distance in the radial direction of the second hinge axis and is combined with the joint base. The other end of the outer rod is pivotally connected to the second lower pin.

7. The display device according to claim 6, wherein: A distance between the first upper pin and the first lower pin is the same as a distance between the second upper pin and the second lower pin.

8. The display device according to claim 6, wherein: The center of the second hinge axis, the center of the second upper pin, and the center of the second lower pin form vertices of a triangle.

9. The display device according to claim 6, wherein: The center of the second hinge axis is spaced apart from a straight line connecting a center of the second upper pin and a center of the second lower pin.

10. The display device according to claim 6, wherein: The second hinge shaft is fixed to the joint base of the arm hinge assembly and rotates together with the joint base. The upper arm pivots relative to the second hinge axis.

11. The display device according to claim 10, wherein: The arm hinge assembly also includes: a coil spring wound around the second hinge shaft; and a fixing ring, opposite to the joint base via the coil spring, and fixed to the second hinge shaft; One end of the coil spring is fixed to the fixing ring. The other end of the coil spring is supported by the upper arm.

12. The display device according to claim 10, wherein: The upper arm further includes a cylindrical circular configuration groove for inserting the second hinge shaft. The arm hinge assembly also includes: The circular control plate rotates inside the circular configuration groove, and the second hinge shaft is inserted and fixed. The circular control disk includes a position control console protruding from the edge in the radial direction, The circular configuration groove has an engaging platform adjacent to the outer circumference of the circular control disk and for the position control console to engage with, so as to limit the rotation range of the second hinge axis.

13. The display device according to claim 6, wherein: The base also includes: a first coil spring, wound around the first hinge shaft, one end of which is supported by the base and the other end of which is supported by the lower arm, thereby providing elastic force from the base to the lower arm; The arm hinge assembly also includes: a second coil spring, wound around the second hinge shaft, one end of which is fixed to the second hinge shaft and the other end of which is supported by the upper arm, thereby providing elastic force from the lower arm to the upper arm; The display device further comprises a tension spring, one end of which is engaged with the lower arm, and the other end of which is engaged with the first inner rod.

14. The display device according to claim 13, wherein: The extension spring is extended when the height of the arm hinge assembly becomes lower toward the base, and is compressed when the height of the arm hinge assembly becomes higher from the base.

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