Display support

Abstract

The utility model discloses a display support which comprises a support body, a first inserting portion is arranged at the upper end of the support body, the support body comprises a first connecting arm and a second connecting arm, one end of the second connecting arm is rotatably connected with one end of the connecting arm, the other end of the second connecting arm is rotatably connected with one end of the first inserting portion, and the second connecting arm comprises an upper arm and a lower arm. A spring, a special-shaped connecting rod, a connecting rod, a positioning connecting rod and an adjusting screw rod are arranged in the upper arm and the lower arm, the spring sleeves the positioning connecting rod, the upper end of the positioning connecting rod is hinged to the special-shaped connecting rod, the upper end of the connecting rod is hinged to the special-shaped connecting rod, the lower end of the connecting rod is hinged to the lower arm, and the lower end of a first inserting part is hinged to the lower arm and further hinged to the other end of the special-shaped connecting rod; the center of the first inserting part is hinged to the upper arm, one end of the adjusting screw is rotationally connected below the lower arm, the adjusting screw is in threaded connection with a limiting block, the other end of the spring abuts against the limiting block, and the other end of the adjusting screw is movably inserted into the lower end of the positioning connecting rod. The structure improves the hinging stability.

Description

Technical Field

[0001] This utility model relates to the technical field of monitor stands, specifically a monitor stand. Background Technology

[0002] With the continuous development of society, computer flat panel monitors and flat-screen TVs are becoming increasingly popular in offices and ordinary homes, leading to the development of corresponding stands. Existing stands for supporting computer monitors are generally clamped or fixed to desks or office tables. Their structure is generally as disclosed in patent application number 202021141668.5, including a connecting base, a monitor mounting plate for connecting the monitor, and a stand body. The stand body is located between the connecting base and the monitor mounting plate. A second connector is connected to the upper end of the stand body. The stand body includes a first connecting arm and a second connecting arm. The first end of the first connecting arm is rotatably connected to the connecting base, the first end of the second connecting arm is rotatably connected to the second end of the first connecting arm, and the second end of the second connecting arm is rotatably connected to the second connector. The stand body can be rotated to adjust the angle, thereby allowing the angle of the monitor on the monitor mounting plate to be adjusted for user viewing convenience.

[0003] The aforementioned connecting arm typically employs either a gas spring or a mechanical spring structure for height adjustment. Gas spring monitor stands have disadvantages such as high cost, short lifespan, potential for oil leaks, safety hazards, and environmental unfriendliness (due to difficulties in disposal after disposal). However, gas springs offer stable force and provide a good user experience in achieving free height adjustment. Currently, gas spring monitor stands remain dominant. Mechanical spring monitor stands offer advantages such as low cost, long lifespan, and safety and environmental friendliness. However, existing mechanical spring monitor stands, such as the height-adjustable monitor stand disclosed in patent application number 202021214903.7, only use a single hinge point at the upper end of the internal spring to hinge to the connecting head, resulting in poor stability during hinge operation and an unsatisfactory anti-tilt effect. Furthermore, the spring force cannot be adjusted at the lower end as required, thus requiring improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a monitor stand to solve the problems mentioned in the background art, such as the existing monitor stands having only one hinge point at the upper end of the spring to the connector, resulting in poor stability during hinge and ultimately unsatisfactory anti-tilt effect, and the inability to adjust the spring force at the lower end of the spring.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a monitor stand, comprising a stand body, wherein a first insertion portion is provided at the upper end of the stand body, the stand body includes a connecting arm one and a connecting arm two, the first end of the connecting arm two is rotatably connected to the second end of the connecting arm one, and the second end of the connecting arm two is rotatably connected to one end of the first insertion portion, the connecting arm two includes an upper arm and a lower arm that are parallel to each other, and a spring, an irregularly shaped connecting rod, a connecting rod, a positioning connecting rod, and an adjusting screw are provided in the cavity formed by the upper arm and the lower arm, wherein the spring is sleeved on the positioning connecting rod, and the upper end of the positioning connecting rod is hinged to the irregularly shaped connecting rod through a second pivot, and the upper end of the connecting rod is hinged to the irregularly shaped connecting rod. The first hinge point is formed by the hinge, the lower end of the connecting rod is hinged to the lower arm to form the second hinge point, the lower end of the first insertion part is hinged to the lower arm to form the fourth hinge point, the first insertion part is also hinged to the end of the irregular connecting rod away from the first hinge point to form the third hinge point, the center of the first insertion part is hinged to the upper arm through the first rotating shaft, and the first hinge point, the second hinge point, the third hinge point and the fourth hinge point form a hinged parallelogram, one end of the adjusting screw is rotatably connected to the lower arm, the adjusting screw is threadedly connected to the limit block, the other end of the spring abuts against one side of the limit block, and the other end of the adjusting screw is movably inserted into the lower end of the positioning connecting rod.

[0006] Furthermore, to prevent head tilting, a connector and a monitor mounting head assembly for connecting the monitor are also included. The bracket body is located between the connector and the monitor mounting head assembly. The first end of the connecting arm is rotatably connected to the connector, and the other end of the monitor mounting head assembly is rotatably connected to the first plug-in part. The monitor mounting head assembly includes a panel for fixing the monitor, a panel connecting block, a limiting buckle, a buckle fixing seat, a torsion spring fixing seat, a shaped clamping block, and a locking screw. The center of the panel is connected to the panel connecting block. The limiting buckle is provided at the front end of the buckle fixing seat, and the buckle fixing seat is fixed to the front end of the connecting sheet metal at the rear. Positioning inserts are provided on both sides of the groove on the back of the panel connecting block, and the buckle fixing seat is provided on both sides. The device has a pin groove that mates with the positioning insert. The limiting buckle engages with the upper end of the groove on the back of the panel connecting block. The two ends of the connecting sheet metal are located on both sides of the torsion spring fixing seat. A torsion spring is installed inside the torsion spring fixing seat. A special-shaped clamping block is provided on both sides of the torsion spring fixing seat. The locking screw passes through one special-shaped clamping block, one side of the connecting sheet metal, the torsion spring, the other side of the connecting sheet metal, and another special-shaped clamping block from one end of the torsion spring fixing seat, and then locks with the locking nut inside the other side of the torsion spring fixing seat. Each special-shaped clamping block has one or more special-shaped protrusions on the side facing the torsion spring fixing seat. The special-shaped protrusions pass through the connecting sheet metal and engage with the limiting groove on the side of the torsion spring fixing seat. The two ends of the torsion spring are fixed to the connecting sheet metal.

[0007] Furthermore, to facilitate subsequent installation, the upper end of the connecting seat is provided with a rotating positioning shaft that can be rotatably inserted into the lower end of the connecting arm. The connecting seat includes a base plate, a clamping plate, and a movable hanging plate. The lower end of the rotating positioning shaft is welded to the base plate. The clamping plate is locked to the bottom thread of the base plate by countersunk screws. The movable hanging plate is locked to the inside of the clamping plate by fixing screws. A knob is threadedly connected to the movable hanging plate. A positioning clip is provided above the knob. Rotating the knob can adjust the distance between the positioning clip and the base plate. The outer side of the clamping plate is provided with a cable management groove and an internal hexagonal wrench groove for inserting a hexagonal wrench.

[0008] Furthermore, to facilitate the disassembly and installation of the wire buckle, a wire buckle is detachably connected to the lower part of the first connecting arm. The wire buckle is provided with two or more L-shaped buckles. A slot is provided at the lower part of the first connecting arm to facilitate the insertion of the L-shaped buckles. A limiting rib is provided on the outer side of the L-shaped buckle, and a limiting groove is provided in the slot to engage with the limiting rib.

[0009] Furthermore, a rotating seat is hinged to the lower arm via a third pivot, and the lower part of the upper arm is hinged to the rotating seat via a fifth pivot. The lower part of the rotating seat is rotatably connected to the second end of the connecting arm. The fourth hinge point, the first pivot, the third pivot, and the fifth pivot form another hinged parallelogram.

[0010] Furthermore, to facilitate the later rotation of the adjusting screw, a support block is provided at the center of the rotating seat, and a plane bearing is provided inside the support block. One end of the adjusting screw passes through the plane bearing and the support block and extends out of the outside of the rotating seat, and an internal hexagonal hole is provided on the end face of the adjusting screw extending out of the rotating seat.

[0011] Furthermore, to facilitate positioning, protrusions are provided on both sides of the positioning block, and a guide slide is provided inside the upper arm to facilitate the insertion of the protrusions. Additionally, a positioning baffle is provided inside the upper arm to limit the positioning block, and the positioning baffle is close to the support block.

[0012] Furthermore, to facilitate viewing the current spring force, transparent observation windows are provided on both the front and rear sides of the upper arm to facilitate viewing the position of the boss.

[0013] Furthermore, in order to limit the pitch, an upper limit rib is provided on the upper side of the rotating seat to limit the highest point of the upper rotation of the lower arm and a lower limit rib to limit the lowest point of the lower rotation of the lower arm.

[0014] Compared with the prior art, the beneficial effects of this utility model are: this structure improves the anti-head-down effect, ensures stability during hinge, and realizes the adjustment of spring force. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a monitor stand in Embodiment 1;

[0016] Figure 2 This is a schematic diagram of the structure of a monitor stand in Embodiment 1 without the upper arm 3021 installed. Figure Two ;

[0017] Figure 3 This is a schematic diagram of the structure of a monitor bracket in Embodiment 1 when the upper arm and cable clips are separated from other components;

[0018] Figure 4 for Figure 3 Enlarged view of point A;

[0019] Figure 5 This is a schematic diagram of the thread buckle structure;

[0020] Figure 6 This is a schematic diagram of the internal structure of the upper arm when the lower arm is not installed on the upper arm during the assembly of the bracket body and the connecting arm 2.

[0021] Figure 7 This is a structural diagram showing the assembly of the support body and connecting arm 2, with the upper and lower arms completely hidden.

[0022] Figure 8 This is a schematic diagram of the connector structure;

[0023] Figure 9 A schematic diagram of the structure for mounting a head assembly to a display.

[0024] Figure 10 An exploded view of the head assembly for mounting the display.

[0025] Figure 11 for Figure 2 Enlarged view of point B.

[0026] In the diagram: Connector 1, Base Plate 101, Clamping Plate 102, Movable Hanging Plate 103, Knob 104, Positioning Clip 105, Cable Management Channel 106, Hex Wrench Slot 107, Monitor Mounting Head Assembly 2, Panel 201, Panel Connecting Block 202, Limiting Clip 203, Clip Fixing Base 204, Pin Slot 2041, Torsion Spring Fixing Base 205, Connecting Sheet Metal 206, Positioning Insert 207, Locking Screw 208, Locking Nut 209, Irregular Clamping Block 210, Rotary Positioning Shaft 211, Irregular Boss Inclined Surface 2101, Washer 212, Torsion Spring 213, Decorative Part 214, Bracket Body 3, Connecting Arm 1 301, Connecting Arm 2 302, Upper Arm 3 021, Lower arm 3022, Spring 303, Irregular connecting rod 304, Connecting rod 305, Positioning connecting rod 306, Adjusting screw 307, First insertion part 4, Second rotating shaft 5, First hinge point 6, Second hinge point 7, Fourth hinge point 8, Third hinge point 9, Limiting block 10, Wire buckle 11, L-shaped buckle 12, Slot 13, Limiting groove 131, Third rotating shaft 14, Rotating seat 15, First rotating shaft 16, Support block 17, Planar bearing 18, Hexagonal socket hole 19, Boss 20, Guide slide 21, Limiting baffle 22, Transparent observation window 23, Upper limit rib 24, Lower limit rib 25, Rotary positioning shaft 26, Countersunk screw 27, Fifth rotating shaft 28. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Example 1

[0030] Please see Figures 1-11As shown, this embodiment discloses a monitor stand, including a stand body 3. The upper end of the stand body 3 is provided with a first insertion part 4. The stand body 3 includes a connecting arm 301 and a connecting arm 302. The first end of the connecting arm 302 is rotatably connected to the second end of the connecting arm 301, and the second end of the connecting arm 302 is rotatably connected to one end of the first insertion part 4. The connecting arm 302 includes an upper arm 3021 and a lower arm 3022 that are parallel to each other. A spring 303, a shaped connecting rod 304, a connecting rod 305, a positioning connecting rod 306, and an adjusting screw 307 are disposed within the cavity formed by the upper arm 3021 and the lower arm 3022. The spring 303 is sleeved around the positioning connecting rod 306, and the upper end of the positioning connecting rod 306 is hinged to the shaped connecting rod 304 via a second pivot 5. The upper end of the connecting rod 305 is hinged to the shaped connecting rod 304. The first hinge point 6 is formed by hinge 304. The lower end of the connecting rod 305 is hinged to the lower arm 3022 to form the second hinge point 7. The lower end of the first insertion part 4 is hinged to the lower arm 3022 to form the fourth hinge point 8. The first insertion part 4 is also hinged to the end of the irregular connecting rod 304 away from the first hinge point 6 to form the third hinge point 9. The center of the first insertion part 4 is hinged to the upper arm 3021 through the first rotating shaft 16. The first hinge point 6, the second hinge point 7, the third hinge point 9 and the fourth hinge point 8 form a hinged parallelogram. One end of the adjusting screw 307 is rotatably connected to the lower arm 3022. The adjusting screw 307 is threadedly connected to the limiting block 10. The other end of the spring 303 abuts against one side of the limiting block 10. The other end of the adjusting screw 307 is movably inserted into the lower end of the positioning connecting rod 306.

[0031] like Figure 9 , Figure 10As shown, furthermore, to prevent head tilting, it also includes a connecting base 1 and a monitor mounting head assembly 2 for connecting to the monitor. The bracket body 3 is located between the connecting base 1 and the monitor mounting head assembly 2. The first end of the connecting arm 301 is rotatably connected to the connecting base 1, and the other end of the monitor mounting head assembly 2 is rotatably connected to the first plug-in part 4. The monitor mounting head assembly 2 includes a panel 201 for fixing the monitor, a panel connecting block 202, a limiting buckle 203, a buckle fixing seat 204, a torsion spring fixing seat 205, a special-shaped clamping block 210, and a locking screw 208. The center of the panel 201 is connected to the panel connecting block 202 and riveted. After riveting, it ensures that the panel 201 can be 36 Rotating 0 degrees, the front end of the buckle fixing seat 204 is provided with the limiting buckle 203. The buckle fixing seat 204 is fixed to the front end of the connecting sheet metal 206. Positioning inserts 207 are provided on both sides of the groove 2021 on the back of the panel connecting block 202. The buckle fixing seat 204 is provided with pin slots 2041 on both sides to cooperate with the positioning inserts 207. The limiting buckle 203 engages with the upper end face of the groove 2021 on the back of the panel connecting block 202. When the positioning inserts 207 on the back of the panel connecting block 202 are inserted from the pin slots 2041, the hook of the limiting buckle 203 engages with the upper end face of the back of the panel connecting block 202, thus fixing the panel connecting block 202 to the buckle. The connection between seats 204 is easy to disassemble later. The rear ends of the connecting sheet metal 206 are located on both sides of the torsion spring fixing seat 205. The torsion spring fixing seat 205 is equipped with a torsion spring 213. A special-shaped clamping block 210 is provided on both sides of the torsion spring fixing seat 205. The locking screw 208 passes through one end of the torsion spring fixing seat 205, one special-shaped clamping block 210, one side of the connecting sheet metal 206, the torsion spring 213, the other side of the connecting sheet metal 206, and another special-shaped clamping block 210 in sequence, and locks with the locking nut 209 in the other side of the torsion spring fixing seat 205. Each special-shaped clamping block 210 has one or more special-shaped protrusions and inclined surfaces 2101 on the side facing the torsion spring fixing seat 205. The irregularly shaped protrusion 2101 passes through the connecting sheet metal 206 and engages with the limiting groove 2051 on the side of the torsion spring fixing seat 205. Both ends of the torsion spring 213 are fixed to the connecting sheet metal 206. A rotating positioning shaft 211 is provided at the bottom of the torsion spring fixing seat 205, and the rotating positioning shaft 211 is rotatably connected to the first insertion part 4. A washer 212 is also provided between the irregularly shaped clamping block 210 and the side of the connecting sheet metal 206. For aesthetic purposes, decorative parts 214 are also provided on both sides of the torsion spring fixing seat 205. One decorative part 214 is used to cover the head of the locking screw 208, and the other is used to hide the locking nut 209. In this structure, the two sides of the back of the connecting sheet metal 206...The locking screw 208 passes sequentially through a shaped clamping block 210, one side of the connecting sheet metal 206, a torsion spring 213, the other side of the connecting sheet metal 206, and another shaped clamping block 210 before locking with a locking nut 209 on the other side of the torsion spring fixing seat 205. During the locking process, because the shaped clamping blocks 210 on both sides have shaped protrusions and inclined surfaces 2101, these surfaces are compressed and deformed during the locking process of the locking screw 208, generating friction with the torsion spring fixing seat 205. This ultimately allows the head to stop during tilting adjustments. Furthermore, because the locking nut 209 is fitted with a torsion spring 213, whose ends are fixed to the connecting sheet metal 206, the clamping action via the torsion spring 213 prevents the head from tilting downwards.

[0032] like Figure 8 As shown, furthermore, for convenient later installation, the upper end of the connecting seat 1 is provided with a rotating positioning shaft 26 that is rotatably inserted into the lower end of the connecting arm 301. The connecting seat 1 includes a base plate 101, a clamping plate 102, and a movable hanging plate 103. The lower end of the rotating positioning shaft 26 is welded to the base plate 101. The clamping plate 102 is locked to the bottom of the base plate 101 by a countersunk screw 27. The movable hanging plate 103 is locked to the inside of the clamping plate 102 by a fixing screw 108. A knob 104 is threadedly connected to the movable hanging plate 103. A positioning clip 105 is provided above the knob 104. Rotating the knob 104 can adjust the distance between the positioning clip 105 and the base plate 101. The outer side of the clamping plate 102 is provided with a cable management groove 106 and an internal hex wrench groove 107 for inserting a hex wrench. The cable management groove 106 is provided on the side of the clamping plate 102 to store the cable. The internal hex wrench groove 107 is added to store the internal hex wrench, which is convenient for users to use later. The distance between the positioning clip 105 and the base plate 101 can be adjusted by adjusting the knob 104 to clamp the device on the table.

[0033] Furthermore, to facilitate the disassembly and installation of the wire buckle, a wire buckle 11 is detachably connected to the lower part of the connecting arm 301. The wire buckle 11 is provided with two or more L-shaped buckles 12. The lower part of the connecting arm 301 is provided with a slot 13 to facilitate the insertion of the L-shaped buckles 12. The outer side of the L-shaped buckle 12 is provided with a limiting rib 121. The slot 13 is provided with a limiting groove 131 that engages with the limiting rib 121. The wire buckle 11 is detachably installed to the connecting arm 301 for easy disassembly later.

[0034] Furthermore, a rotating seat 15 is hinged to the lower arm 3022 via a third pivot 14, and the upper arm 3021 is hinged to the rotating seat 15 via a fifth pivot 28. The rotating seat 15 is rotatably connected to the second end of the connecting arm 301. The fourth hinge point 8, the first pivot 16, the third pivot 14, and the fifth pivot 28 form another hinged parallelogram.

[0035] Furthermore, to facilitate the later rotation of the adjusting screw, a support block 17 is provided at the center of the rotating seat 15. A plane bearing 18 is provided inside the support block 17. One end of the adjusting screw 307 passes through the plane bearing 18 and the support block 17 and extends out of the outside of the rotating seat 15. The end face of the adjusting screw 307 extending out of the rotating seat 15 is provided with an internal hexagonal hole 19. The above structure ensures that the adjusting screw 307 is pressed against the support block 17 and then transmitted to the plane bearing 18, making it easier to adjust the adjusting screw 307. At the same time, an internal hexagonal hole 19 is provided on the back of the adjusting screw 307, so that a hexagonal wrench can be inserted into the internal hexagonal hole 19 to adjust the adjusting screw 307 later.

[0036] Furthermore, to facilitate positioning, protrusions 20 are provided on both sides of the positioning block 10, and a guide slide 21 is provided in the upper arm 3021 to facilitate the insertion of the protrusions 20. A positioning baffle 22 for positioning the positioning block 10 is also provided in the upper arm 3021. The positioning baffle 22 is close to the support block 17. In this structure, by adding the guide slide 21, it is possible to further prevent the positioning block 10 from rotating 306 degrees when the adjusting screw 307 rotates, and it can only move up and down.

[0037] Furthermore, to facilitate viewing the current state of the spring force, the upper arm 3021 is provided with transparent observation windows 23 on both the front and rear sides to facilitate viewing the position of the boss 20. By setting the transparent observation windows 23, the current adjustment force value of the spring 303 can be seen intuitively.

[0038] Furthermore, in order to limit the pitch, an upper limit rib 24 for limiting the highest point of the upper rotation of the lower arm 3022 and a lower limit rib 25 for limiting the lowest point of the lower rotation of the lower arm 3022 are provided on the upper side of the rotating seat 15. By setting the upper limit rib 24 and the lower limit rib 25, the angle of the connecting arm 302's upward pitch and downward tilt can be achieved.

[0039] In this structure, the upper end of the spring 303 in the connecting arm 302 is equipped with an irregularly shaped connecting rod 304 and a connecting rod 305. These connecting rods 304 and 305, together with the lower arm 3022, the first insertion part 4, and the positioning connecting rod 306, form a first hinge point 6, a second hinge point 7, a third hinge point 9, and a fourth hinge point 8. These four hinge points ultimately form a parallelogram-shaped transmission structure. When the entire monitor is mounted on the monitor mounting head assembly 2, the irregularly shaped connecting rod 304 presses down as the weight of the head increases. When this pressure is transmitted to the hinge support point of the second rotating shaft 5, the hinge support point moves inward, compressing the spring 303. The compressed spring 303 generates a supporting force, ensuring the movement of the hinge support point of the second rotating shaft 5. Ultimately, the internal driving force of the spring ensures that the entire head remains stable. The tilting mechanism also enhances the monitor stand's load-bearing capacity, further improving the anti-tilt effect and ensuring stability during hinge operation. Simultaneously, a connecting rod 305 is installed inside the spring 303, with an adjusting screw 307 movably connected to the other end of the connecting rod 305. This limits the movement of the spring 303. A limiting block 10, threaded onto the adjusting screw 307, abuts against the other end of the spring 303. When the adjusting screw 307 is rotated, the limiting block 10 moves up and down along the adjusting screw 307, ultimately compressing the spring 303. This adjusts the compression ratio of the spring 303. When the limiting block 10 is at its lowest position, the force is minimal; when the limiting block 10 is at its highest position, the force is maximum (i.e., the maximum force is required when the monitor is heavy, and vice versa), thus adjusting the spring's elasticity.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A monitor stand, comprising a stand body (3), wherein a first insertion part (4) is provided at the upper end of the stand body (3), the stand body (3) comprising a connecting arm one (301) and a connecting arm two (302), wherein a first end of the connecting arm two (302) is rotatably connected to a second end of the connecting arm one (301), and a second end of the connecting arm two (302) is rotatably connected to a first insertion part (4), characterized in that: The connecting arm 2 (302) includes an upper arm (3021) and a lower arm (3022) that are parallel to each other. The cavity formed by the upper arm (3021) and the lower arm (3022) is provided with a spring (303), a shaped connecting rod (304), a connecting rod (305), a positioning connecting rod (306), and an adjusting screw (307). The spring (303) is sleeved on the positioning connecting rod (306), and the upper end of the positioning connecting rod (306) is hinged to the shaped connecting rod (304) through a second rotating shaft (5). The upper end of the connecting rod (305) is hinged to the shaped connecting rod (304) to form a first hinge point (6), and the lower end of the connecting rod (305) is hinged to the lower arm (3022) to form a second hinge point (7). The lower end of the first insertion part (4) is hinged to the lower arm (3022). The first insertion part (4) is also hinged to the end of the irregular connecting rod (304) away from the first hinge point (6) to form the third hinge point (9). The center of the first insertion part (4) is hinged to the upper arm (3021) through the first rotating shaft (16). The first hinge point (6), the second hinge point (7), the third hinge point (9) and the fourth hinge point (8) form a hinged parallelogram. One end of the adjusting screw (307) is rotatably connected to the lower arm (3022). The adjusting screw (307) is threaded with a limit block (10). The other end of the spring (303) abuts against one side of the limit block (10). The other end of the adjusting screw (307) is movably inserted into the lower end of the positioning connecting rod (306).

2. A monitor stand according to claim 1, characterized in that: It also includes a connector (1) and a display mounting head assembly (2) for connecting to a display. The bracket body (3) is located between the connector (1) and the display mounting head assembly (2). The first end of the connecting arm (301) is rotatably connected to the connector (1), and the other end of the display mounting head assembly (2) is rotatably connected to the first plug-in part (4). The display mounting head assembly (2) includes a panel (201) for fixing the display, a panel connecting block (202), a limiting buckle (203), a buckle fixing seat (204), and a torsion spring fixing seat (205). 205), irregular clamping block (210) and locking screw (208), the center of the panel (201) is connected to the panel connecting block (202), the front end of the buckle fixing seat (204) is provided with the limiting buckle (203), the buckle fixing seat (204) is fixed to the front end of the connecting sheet metal (206) at the rear, the back groove (2021) of the panel connecting block (202) is provided with positioning inserts (207) on both sides, and the buckle fixing seat (204) is provided with pin grooves (2041) on both sides that cooperate with the positioning inserts (207). The limiting buckle (203) engages with the upper end of the back groove (2021) of the panel connecting block (202). The rear ends of the connecting sheet metal (206) are located on both sides of the torsion spring fixing seat (205). A torsion spring (213) is provided inside the torsion spring fixing seat (205). A special-shaped clamping block (210) is provided on both sides of the torsion spring fixing seat (205). The locking screw (208) passes through a special-shaped clamping block (210), one side of the connecting sheet metal (206), and the torsion spring (213) from one end of the torsion spring fixing seat (205). The connecting sheet metal (206) is connected to another irregular clamping block (210) on the other side, and then locked with the locking nut (209) on the other side of the torsion spring fixing seat (205). The irregular clamping block (210) facing the torsion spring fixing seat (205) is provided with one or more irregular boss inclined surfaces (2101). The irregular boss inclined surfaces (2101) pass through the connecting sheet metal (206) and cooperate with the limiting groove (2051) on the side of the torsion spring fixing seat (205). The two ends of the torsion spring (213) are fixed on the connecting sheet metal (206).

3. A monitor stand according to claim 2, characterized in that: The upper end of the connecting seat (1) is provided with a rotating positioning shaft (26) that is rotatably inserted into the lower end of the connecting arm (301). The connecting seat (1) includes a base plate (101), a clamping plate (102), and a movable hanging plate (103). The lower end of the rotating positioning shaft (26) is welded to the base plate (101). The clamping plate (102) is locked to the bottom of the base plate (101) by a countersunk screw (27). The movable hanging plate (103) is connected to the bottom of the base plate (101) by a screw thread. The movable hanging plate (103) is threaded with a knob (104) and a positioning clip (105) is provided above the knob (104). The distance between the positioning clip (105) and the base plate (101) can be adjusted after the knob (104) is rotated. The outer side of the clamping plate (102) is provided with a cable management groove (106) and an internal hexagonal wrench groove (107) for inserting a hexagonal wrench.

4. A monitor stand according to claim 1, 2, or 3, characterized in that: The lower part of the connecting arm (301) is detachably connected to a wire buckle (11). The wire buckle (11) is provided with two or more L-shaped buckles (12). The lower part of the connecting arm (301) is provided with a slot (13) to facilitate the insertion of the L-shaped buckle (12). The outer side of the L-shaped buckle (12) is provided with a limiting rib (121). The slot (13) is provided with a limiting groove (131) that engages with the limiting rib (121).

5. A monitor stand according to claim 1, 2, or 3, characterized in that: A rotating seat (15) is hinged to the lower arm (3022) via a third pivot (14). The upper arm (3021) is hinged to the rotating seat (15) via a fifth pivot (28). The rotating seat (15) is rotatably connected to the second end of the connecting arm (301). The fourth hinge point (8), the first pivot (16), the third pivot (14), and the fifth pivot (28) form another hinged parallelogram.

6. A monitor stand according to claim 5, characterized in that: A support block (17) is provided at the center of the rotating seat (15). A plane bearing (18) is provided inside the support block (17). One end of the adjusting screw (307) passes through the plane bearing (18) and the support block (17) and extends out of the outside of the rotating seat (15). An internal hexagonal hole (19) is provided on the end face of the adjusting screw (307) extending out of the rotating seat (15).

7. A monitor stand according to claim 6, characterized in that: Both sides of the limiting block (10) are provided with protrusions (20), the upper arm (3021) is provided with a guide slide (21) to facilitate the insertion of the protrusions (20), and the upper arm (3021) is also provided with a limiting baffle (22) for limiting the limiting block (10), the limiting baffle (22) being close to the support block (17).

8. A monitor stand according to claim 7, characterized in that: The upper arm (3021) is provided with transparent observation windows (23) on both the front and rear sides to facilitate viewing the position of the boss (20).

9. A monitor stand according to claim 5, characterized in that: The upper side of the rotating seat (15) is provided with an upper limit rib (24) for limiting the upper highest point of the lower arm (3022) and a lower limit rib (25) for limiting the lower lowest point of the lower arm (3022).

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