CN114060674B - Monitor stand and display device - Google Patents

Abstract

A display bracket and a display device are provided, wherein the display bracket comprises a foot rest, a base, a pivoting piece and a clamping device. The foot rest is arranged on a plane; the foot rest is provided with a top end and a bottom end, wherein the bottom end is used for being arranged on a plane, so that the foot rest is vertically arranged on the plane. The base is slidably disposed on the stand. The pivot piece is provided with a mounting plate and at least one pivot plate, the pivot plate vertically extends to the mounting plate, the pivot plate is provided with a limit notch, and the pivot plate is pivoted to the base. The clamping device is arranged on the base and is provided with a movable stop pin and an operating piece, the stop pin is embedded into the limit notch, the pivoting piece is limited to a rotation range relative to the base, and the operating piece is used for pushing the stop pin to be separated from the limit notch, so that the pivoting piece can continuously rotate to enable the mounting plate to be parallel to the plane.

Description

Monitor stand and display device

technical field

The invention relates to a display support, in particular to a display support capable of turning the display to a horizontal state.

Background technique

Displays need to receive various electrical signal inputs such as power, image signals, and audio signals. Generally speaking, the signal input port of the monitor is arranged at the bottom, side or back to accept the insertion of various signal lines.

When plugging and unplugging various signal cables, the most direct way is to move the monitor body and move the signal input port to the front of the user. However, the existing displays are large in size and heavy in weight, which is not conducive for users to carry them directly. Another way is to use the design that the display can be turned from landscape to portrait orientation, so that the signal input port at the bottom is moved to the side, which is convenient for users to plug and unplug various signal lines. However, the above-mentioned method is limited to moving the signal input port at the bottom to the side, and cannot solve the problem of plugging and unplugging the signal cable at the back of the display. At the same time, turning to portrait orientation for wide monitors will cause interference with the touch placement plane, which cannot be turned to portrait orientation.

Contents of the invention

The object of the present invention is to provide a display bracket and a display device to solve at least one of the above problems.

In view of the above technical problems, the present invention proposes a display stand for setting on a plane. The monitor bracket includes a tripod, a base, a pivot piece and a locking device. The tripod is used for setting on a plane; wherein, the tripod has a top end and a bottom end, and the bottom end is used for setting on a plane, so that the tripod is set upright on a plane. The base is slidably arranged on the tripod. The pivotal member has a mounting plate and at least one pivotal plate, the pivotal plate extends perpendicularly to the mounting plate, the pivotal plate has a limit gap, and the pivotal plate is pivotally connected to the base. The latching device is arranged on the base, and the latching device has a movable stop pin and an operating member. The stop pin is normally embedded in the limit gap to limit a rotation range of the pivot member relative to the base, and The operating part is used to push the stop pin out of the limit notch, so that the pivoting part can rotate continuously so that the mounting plate is parallel to the plane.

In at least one embodiment of the present invention, the base has a sliding portion and at least one pivoting portion, the sliding portion is slidably disposed on the stand, the pivoting portion extends from the sliding portion, and the pivoting plate is pivoted to the pivoting portion .

In at least one embodiment of the present invention, the stand further has a sliding guide part, and the sliding part is slidably disposed on the slide guide part.

In at least one embodiment of the present invention, the sliding guiding part is a long groove, and the sliding part is accommodated in the long groove.

In at least one embodiment of the present invention, the display stand further includes a positioning device for fixing the base at a specified position.

In at least one embodiment of the present invention, the operating member has a sliding block and an elastic member, the sliding block is slidably disposed on the base, and the elastic member is normally compressed between the sliding block and the base to push the sliding block toward the top end. block, and the stopper pin is arranged on the sliding block; wherein, when the mounting plate is perpendicular to the plane, the stopper pin can move toward the top and fit into the limit gap.

In at least one embodiment of the present invention, the display bracket further includes a push-off post, which is arranged on the stand and corresponds to the top, wherein, when the base moves to the top, the push-off post pushes against the sliding block, so that the stop pin Get out of the limit gap.

In at least one embodiment of the present invention, the base has at least one guiding slot, and the sliding block has at least one guiding column slidably disposed in the guiding slot.

In at least one embodiment of the present invention, the operating element further has a resilient piece and a sliding switch element. One end of the elastic piece is arranged on the base, and the stop pin is arranged on the other end of the elastic piece, and the elastic piece is arranged on the outside of the pivot joint, so that the stop pin is aligned with a perforation of the pivot joint, and there is a gap between the elastic piece and the pivot joint. Keep a distance. The slide switch is movably arranged on the base, and moves on the base between a pressing position and a release position; the slide switch has a positioning rod and a push rod, and the push rod is located at the elastic piece and the pivot joint Between, and the positioning rod corresponds to the configuration of the stop pin. When the sliding switch is at the suppressing position, the positioning rod normally presses the shrapnel towards the pivot joint, so that the stopper pin protrudes from the inner side of the pivot joint through the perforation to fit into the limit gap; when the sliding switch moves to the release position, the positioning The rod is separated from the elastic piece, and the abutting rod moves toward the stop pin, and pushes the elastic piece away from the pivot joint, so that the stop pin is separated from the limit gap.

In at least one embodiment of the present invention, the positioning rod has a guiding slope, and one end of the stopper pin is set corresponding to the elastic piece. The shrapnel is deformed and enters between the positioning rod and the pivot joint.

In at least one embodiment of the present invention, the through holes are arranged corresponding to the limiting notches; when the mounting plate is perpendicular to the plane, the through holes overlap the limiting notches.

In at least one embodiment of the present invention, the base further has an outer cover, the sliding switch is combined with the outer cover, and is movably disposed on the base, and the positioning rod and the resisting rod pass through at least one through hole of the outer cover.

In at least one embodiment of the present invention, the operating member is a telescopic device, which is arranged on the base, and the stop pin is arranged on the telescopic device; the telescopic device is used to drive the stop pin to expand and contract, so that the stop pin passes through a The hole is inserted into the limit notch; or, the retractable device can drive the stop pin to break away from the limit notch.

In at least one embodiment of the present invention, the through holes are arranged corresponding to the limiting notches; when the mounting plate is perpendicular to the plane, the through holes overlap the limiting notches.

In at least one embodiment of the present invention, the pivot plate also has a fixing notch, and when the mounting plate is parallel to the plane, the stopper pin fits into the fixing notch.

The present invention also proposes a display device, which has the above-mentioned display stand and a display. The display has a front and a back, and the back is fixed on the installation board.

Through the display bracket of the present invention, the display can still be effectively limited during normal use, and can only be tilted back and forth at a limited angle. When it is necessary to carry out electrical signal connectors, as long as the limit of the stopper pin is used, the display can be flipped to a horizontal state, so that the user can plug and unplug the electrical signal connectors, but the entire monitor needs to be moved and tipped over to perform electrical signal connector connection. Docking. After completing the plugging of the electrical signal connector, the pivoting member can be rotated again to restore the upright state of the display, and the base can be lowered to adjust the height of the display to a designated position on the stand. The aforementioned stop pin is easy to operate and can be quickly fixed or released.

Description of drawings

Fig. 1 is an exploded perspective view of the first embodiment of the present invention.

Fig. 2 is a perspective view of the first embodiment of the present invention.

Fig. 3 is a side view of the first embodiment of the present invention.

Fig. 4 is a side view of some components in the first embodiment of the present invention.

Fig. 5 is another side view of some components in the first embodiment of the present invention.

Fig. 6 is another side view of some components in the first embodiment of the present invention.

Fig. 7 is an exploded perspective view of the second embodiment of the present invention.

Fig. 8 is a perspective view of the second embodiment of the present invention.

Fig. 9 is a perspective view of some components in the second embodiment of the present invention.

Fig. 10 is another perspective view of some components in the second embodiment of the present invention.

Fig. 11 is another perspective view of some components in the second embodiment of the present invention.

Fig. 12 is another perspective view of some components in the second embodiment of the present invention.

Fig. 13 is an exploded perspective view of the third embodiment of the present invention.

Fig. 14 is a perspective view of a third embodiment of the present invention.

Fig. 15 is a perspective view of some components in the third embodiment of the present invention.

Fig. 16 is a top view of some components in the third embodiment of the present invention.

Fig. 17 is another perspective view of some components in the third embodiment of the present invention.

Fig. 18 is another top view of some components in the third embodiment of the present invention.

Fig. 19 is a side view of some components in a variation of the present invention.

The reference signs are as follows:

100: monitor stand

110: tripod

112: top

114: Bottom

116: sliding guide part

118: top against column

120: base

122: sliding part

124: pivot joint

124a: Perforation

126: guide slot

128: outer cover

128a: through hole

130: Pivot piece

132: Mounting plate

134: pivot plate

134a: limit gap

134b: Fixed gap

140: locking device

142: stop pin

144: Operating parts

144a: Slide block

144b: Elastic piece

144c: guide post

144d: shrapnel

144e: sliding switch

145a: positioning rod

145b: push rod

145c: guide bevel

146a: rotating disc

146b: stop pin disc

146c: Button

146d: Compression spring

150: positioning device

200: display

210: front

220: back

L: pressing position

R: release position

S: Plane

Detailed ways

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , which are a display device disclosed in the first embodiment of the present invention, including a display stand 100 and a display 200 .

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the display stand 100 is configured to be disposed on a plane S, so as to erect the display 200 on the plane S. As shown in FIG. The display stand 100 includes a stand 110 , a base 120 , a pivot member 130 and a locking device 140 .

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the stand 110 has a top end 112 and a bottom end 114 . The bottom end 114 is configured to be disposed on the plane S, so that the stand 110 is disposed on the plane S upright. The stand 110 also has a sliding guide portion 116 extending from the top end 112 toward the bottom end 114 . The sliding guide part 116 can be partially disposed on a section of the stand 110 corresponding to the top end 112 , and can extend from the top end 112 to the bottom end 114 .

As shown in FIG. 1 , FIG. 2 and FIG. 3 , the base 120 is slidably disposed on the stand 110 and can slide to the top end 112 . In a specific embodiment, the base 120 has a sliding portion 122 and two pivoting portions 124 . The sliding portion 122 is slidably disposed on the sliding guide portion 116 of the stand 110 , and the two pivoting portions 124 extend from the sliding portion 122 . The sliding guide portion 116 is a long groove, and a part of the base 120 , that is, the sliding portion 122 is accommodated in the long groove so that the base 120 can slide toward the top end 112 .

As shown in FIG. 1 and FIG. 2 , a positioning device 150 is provided between the stand 110 and the base 120 to fix the base 120 at a specified position. The positioning device 150 may be a combination of damping elements, a combination of ratchets and racks, or a fixed bolt. In the drawings, a fixing bolt is used as an example. After the fixing bolt passes through the fixing hole of the tripod 110 from the outside of the tripod 110, it abuts against or passes through the base 120 to fix the position of the base 120 on the tripod 110. , so that the base 120 will not fall towards the direction of the bottom end 114 . The fixing bolt is only an example of the positioning device 150 , and is not intended to limit the implementation of the positioning device 150 .

As shown in FIGS. 1 , 2 , 3 and 4 , the pivot member 130 has a mounting plate 132 and two pivot plates 134 . The mounting plate 132 is used to be fixed on the back surface 220 of the display 200 to connect the hinge member 130 to the display 200 . The two pivoting plates 134 extend vertically from two opposite sides of the mounting plate 132 and are pivotally connected to the pivoting portion 124 of the base 120 . In addition, each pivot plate 134 has a limiting notch 134a respectively. The display 200 has a front 210 and a back 220 , and the back 220 is fixed on the mounting plate 132 of the pivot member 130 so as to rotatably connect the display 200 to the base 120 . The height of the display 200 relative to the plane S can be changed by sliding the base 120 relative to the stand 110 .

As shown in FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the locking device 140 is disposed on the base 120 , and the locking device 140 has one or more movable stop pins 142 and an operating member 144 . When the mounting plate 132 is perpendicular to the plane S, the stopper pin 142 is normally inserted into the limiting notch 134 a to limit a rotation range of the pivotal member 130 relative to the base 120 .

As shown in FIGS. 4 , 5 and 6 , the operating member 144 is used to move on the base 120 to push the stop pin 142 out of the limit notch 134a, so that the pivot member 130 can rotate continuously to make the mounting plate 132 parallel. on plane S.

The quantity of the aforementioned limiting notches 134 a and the quantity of the stop pins 142 are matched with each other, that is, each limit notch 134 a is used for inserting one stop pin 142 . That is to say, only one pivot plate 134 of the pivot member 130 and one pivot portion 124 of the base 120 may be configured respectively. At this time, the pivotal member 130 only provides a limiting gap 134 a through one pivotal plate 134 , and in this case, the locking device 140 only needs to be configured with one stop pin 142 . In addition, the width of the limiting notch 134a can be greater than the width of the stop pin 142, so that after the stop pin 142 is inserted into the limit notch 134a, the pivot member 130 can still rotate slightly to adjust the pitch state of the display 200 to match user's line of sight. Therefore, the stopper pin 142 inserted into the limiting notch 134 a is not used to completely fix the pivotal component 130 and the base 120 , but to limit the rotation range of the pivotal component 130 relative to the base 120 .

As shown in FIG. 6 , when the base 120 rises to the top 112 , the rotation of the pivot member 130 is not affected by the interference between the display 200 and the stand 110 , so that the mounting plate 132 can be parallel to the plane S. As shown in FIG. At this time, the display 200 is also parallel to the plane S, the back surface 220 of the display 200 faces the plane S, and the bottom edge or the side edge of the display 200 faces the horizontal direction. In this case, regardless of whether the connection port of the display 200 is located on the back 220 , the bottom edge or the side edge, it is relatively convenient for the user to insert the electrical signal connector.

Referring to FIG. 1 , FIG. 2 , FIG. 4 , FIG. 5 and FIG. 6 , the operating member 144 of the first embodiment has a sliding block 144 a and an elastic member 144 b. The base 120 has one or more guiding slots 126; the sliding block 144a also has one or more guiding posts 144c, which are slidably arranged in the guiding slots 126, so that the sliding block 144a is slidably arranged on the base 120. Specifically, the sliding block 144a is disposed between the two pivot joints 124 of the base 120, and each pivot joint 124 is provided with at least two guiding slots 126, and the extending direction of the guiding slots 126 is perpendicular to Plane S; at least two guide columns 144c are respectively provided on the opposite sides of the sliding block 144a, and are respectively arranged in a guiding slot 126, so as to limit the sliding block 144a to only move linearly relative to the base without relative rotation . The elastic member 144b is normally compressed between the sliding block 144a and the base 120 to push the sliding block 144a toward the top end 112 . The stop pin 142 is disposed on the sliding block 144 a, and the position of the stop pin 142 roughly corresponds to the pivot plate 134 . When the mounting plate 132 is perpendicular to the plane S, the stopper pin 142 can move toward the top end 112 to be inserted into the limiting notch 134a, and the elastic member 144b is used to maintain the stopper pin 142 normally inserted into the limiter notch 134a.

Referring to FIG. 1 , FIG. 2 , FIG. 4 , FIG. 5 and FIG. 6 , the stand 110 also has a propping post 118 disposed on the stand 110 and corresponding to the top end 112 . The abutting post 118 extends toward the bottom end 114 . When the base 120 is far away from the bottom end 114 , the abutting post 118 does not contact the sliding block 144 a, so that the stop pin 142 remains inserted into the limiting notch 134 a. At this time, the pivot member 130 can only rotate relative to the base 120 within a limited range of angles, and the inclination state of the display 200 can be adjusted within a small angle range.

As shown in FIG. 5 , when the base 120 moves to the top end 112 , the abutting column 118 abuts against the sliding block 144 a, so that the stopper pin 142 disengages from the limiting notch 134 a. At this time, the locking device 140 releases the locking of the pivotal member 130 , so that the pivotal member 130 can continue to rotate, so that the display 200 is parallel to the plane S. As shown in FIG. As shown in Figure 4, when the mounting plate 132 is rotated again perpendicular to the plane S, and the base 120 is away from the top 112 again, the abutment column 118 is separated from the sliding block 144a, so that the stopper pin 142 is inserted into the limit gap 134a again to pivot The connector 130 is locked.

Please refer to FIG. 7 , FIG. 8 and FIG. 9 , which are a locking device 140 disclosed in the second embodiment of the present invention, which is suitable for the display stand 100 in one or more embodiments of the present invention. In the second embodiment, the abutting column 118 of the stand 110 is omitted.

As shown in FIG. 7 , FIG. 8 and FIG. 9 , the engaging device 140 has at least one movable stop pin 142 and an operating member. The operating part also has at least one elastic piece 144d and a sliding switch part 144e. One end of the elastic piece 144d is disposed on the base 120, and the stop pin 142 is disposed on the other end of the elastic piece 144d. Specifically, the elastic piece 144d is disposed outside the pivotal portion 124 so that the stopper pin 142 is aligned with the through hole 124a of the pivotal portion 124 , and a distance is maintained between the elastic piece 144d and the pivotal portion 124 . The base 120 also has an outer cover 128 , and the sliding switch 144 e is combined with the outer cover 128 to be movably disposed on the base 120 .

As shown in FIG. 9 , FIG. 10 , FIG. 11 and FIG. 12 , the sliding switch member 144 e can move on the base 120 to a pressing position L and a releasing position R. As shown in FIG. The aforementioned through hole 124a is configured corresponding to the limiting notch 134a; when the mounting plate 132 is perpendicular to the plane S, the through hole 124a overlaps the limiting notch 134a, so that the stopper pin 142 can pass through the through hole 124a and then insert into the limiting notch 134a.

As shown in FIG. 7 , FIG. 9 and FIG. 11 , the sliding switch member 144 e has a positioning rod 145 a and a resisting rod 145 b passing through at least one through hole 128 a of the outer cover 128 . The abutting rod 145b is located between the elastic piece 144d and the pivot portion 124 , and the positioning rod 145a is configured corresponding to the stop pin 142 .

As shown in FIG. 9 and FIG. 10 , when the sliding switch member 144e is at the pressing position L, the positioning rod 145a normally presses the elastic piece 144d toward the pivot joint 124, so that the stopper pin 142 protrudes from the inner side of the pivot joint 124 through the through hole 124a. , and normally fit into the limiting gap 134a.

As shown in Figures 9 and 11, the positioning rod 145a has a guiding slope 145c, and one end of the stopper pin 142 is set corresponding to the elastic piece 144d. One end of the stop pin 142 contacts the guide inclined surface 145c, and the guide elastic piece 144d is deformed and enters between the positioning rod 145a and the pivot portion 124, so that the positioning rod 145a can press the elastic piece 144d toward the pivot portion 124, thereby driving the stop pin 142 fits into the limiting notch 134a through the through hole 124a.

As shown in FIG. 11 and FIG. 12 , when the sliding switch member 144e moves to the release position R, the positioning rod 145a breaks away from the elastic piece 144d, and the abutting rod 145b moves toward the stop pin 142 between the pivot portion 124 and the elastic piece 144d, And the elastic piece 144d is pushed away from the pivotal portion 124, so that the stopper pin 142 is disengaged from the limiting notch 134a.

Please refer to FIG. 13 and FIG. 14 , which is a locking device 140 disclosed in the third embodiment of the present invention, which is suitable for the display stand 100 in one or more embodiments of the present invention. In the third embodiment, the abutting post 118 of the stand 110 is also omitted.

As shown in FIG. 13 and FIG. 14 , the engaging device 140 has at least one stop pin 142 and an operating member 144 that are movable. The operating member 144 is a telescoping device disposed on the base 120 . The stop pin 142 is disposed on the telescoping device. The telescopic device is used to drive the stop pin 142 to expand and contract, so that the stop pin 142 is inserted into the limit gap 134a through a through hole 124a of the pivot portion 124; or, the telescopic device can drive the stop pin 142 to disengage from the limit gap 134a. The aforesaid retractable device can be seen in the mechanism generally used in writing instruments, which can make the pen lead stretchable by pressing. As in the second embodiment, the perforation 124a is configured corresponding to the limit notch 134a; when the mounting plate 132 is perpendicular to the plane S, the perforation 124a overlaps the limit notch 134a, so that the stop pin 142 can pass through the perforation 124a and then fit into the limit notch 134a.

As shown in FIG. 13 and FIG. 14 , in a specific embodiment, the telescoping device (that is, the operating member 144 ) also has a rotating disk 146a, a stop pin disk 146b, a pressing button 146c and a compression spring 146d. The rotating disk 146a is pivotally connected to the pivoting portion 124 of the base 120 , and the stop pin disk 146b is disposed between the rotating disk 146a and the pivoting portion 124 and can be driven by the rotating disk 146a to move along the axial direction. The pressing button 146c is disposed on the other side of the rotating disk 146a, and the pressing button 146c is connected to the rotating disk 146a through a cam mechanism. The compression spring 146d passes through the stop pin disc 146b and the pressing button 146c, and is compressed between the pivot portion 124 and the pressing button 146c. The stop pin 142 is disposed on the stop pin disc 146b, and the stop pin 142 normally passes through the through hole 124a, and can be inserted into the limiting notch 134a.

As shown in Fig. 15, Fig. 16, Fig. 17 and Fig. 18, after the push button 146c is pressed, it drives the displacement of the rotating disk 146a and the stop pin disc 146b through the linkage of the cam mechanism; therefore, the push button 146c is pressed Finally, the stop pin 142 can be driven to expand and contract, so that the stop pin 142 can be inserted into or disengaged from the limiting notch 134a through the through hole 124a, so as to fix or release the pivot member 130 .

Referring to Fig. 19 again, in the second and third embodiments, the pivot plate 134 also has a fixing notch 134b. When the mounting plate 132 is parallel to the plane S, the stop pin 142 is inserted into the fixing notch 134b, thereby temporarily The display 200 is fixed so that the display 200 can be stably maintained in a horizontal arrangement state, so as to facilitate the insertion of various connecting wires.

Through the display stand 100 of the present invention, the display 200 can still be effectively limited during normal use, and can only be tilted back and forth at a limited angle. And when it is necessary to carry out electrical signal connectors, as long as the stopper pin 142 is limited, the display 200 can be flipped to a horizontal state, so that the user can plug and unplug the electrical signal connectors, but the entire display 200 needs to be moved and tipped over for electrical connection. Plugging of signal connectors. After the electrical signal connectors are plugged in, the pivot member 130 can be rotated again to restore the upright state of the display 200 , and the base 120 can be lowered to adjust the height of the display 200 to a designated position on the stand 110 . The aforementioned stopping pin 142 is easy to operate and can be quickly fixed or released.

Claims (16)

1. A display stand, used to be arranged on a plane, is characterized in that, comprising: A tripod for setting on the plane; wherein, the tripod has a top end and a bottom end, and the bottom end is used for setting on the plane, so that the tripod is set upright on the plane; a base, slidably arranged on the tripod; A pivotal member has a mounting plate and at least one pivotal plate, the at least one pivotal plate extends perpendicularly to the mounting plate, the at least one pivotal plate has a limit gap, and the at least one pivotal plate pivots attached to the base; and A latching device is arranged on the base, and the latching device has a movable stopper pin and an operating part, and the stopper pin is inserted into the limit gap to limit the movement of the pivotal member relative to the base. a rotation range, and the operating member is used to push the stop pin out of the limit notch, so that the pivot member can continue to rotate so that the mounting plate is parallel to the plane; The operating member has a sliding block and an elastic member, the sliding block is slidably arranged on the base, the elastic member is compressed between the sliding block and the base, so as to push the sliding block toward the top end, and The stop pin is arranged on the sliding block; wherein, when the mounting plate is perpendicular to the plane, the stop pin can move toward the top end and fit into the limiting notch. 2. The display stand according to claim 1, wherein the base has a sliding portion and at least one pivot portion, the sliding portion is slidably arranged on the stand, and the at least one pivot portion extends to The sliding part, and the at least one pivot plate is pivotally connected to the pivot part. 3 . The monitor stand according to claim 2 , wherein the stand further has a sliding guide portion, and the sliding portion is slidably disposed on the slide guide portion. 4 . 4 . The monitor stand according to claim 3 , wherein the sliding guiding part is a long groove, and the sliding part is accommodated in the long groove. 5. The display stand according to claim 1, further comprising a positioning device for fixing the base at a specified position. 6. The display stand according to claim 1, further comprising a push-off column, which is arranged on the stand and corresponds to the top end, wherein, when the base moves to the top end, the push-off column Butt against the sliding block, so that the stopper pin breaks away from the limiting notch. 7. The display stand according to claim 1, wherein the base has at least one guiding slot, and the sliding block has at least one guiding column, which is slidably arranged in the at least one guiding slot . 8. The display stand according to claim 2, wherein the operating member also has: an elastic piece, one end of which is arranged on the base, and the stop pin is arranged on the other end of the elastic piece, and the elastic piece is arranged outside the pivot joint so that the stop pin is aligned with a through hole of the pivot joint, And a distance is kept between the elastic piece and the pivot joint; and A slide switch part is movably arranged on the base, and moves on the base between a pressing position and a release position; the slide switch part has a positioning rod and a push rod, and the push rod It is located between the elastic piece and the pivot joint, and the positioning rod is arranged corresponding to the stop pin; Wherein, when the sliding switch is at the pressing position, the positioning rod presses the elastic sheet toward the pivot joint, so that the stop pin protrudes inside the pivot joint through the through hole, so as to fit into the limiting gap; When the sliding switch moves to the release position, the positioning rod breaks away from the elastic piece, the abutment lever moves toward the stop pin, and pushes the elastic piece in a direction away from the pivot joint, so that the stop pin breaks away from the limit position gap. 9. The display stand according to claim 8, wherein the positioning rod has a guiding slope, and one end of the stopper pin is arranged corresponding to the elastic piece, and when the sliding switch moves toward the pressing position, the elastic piece is set One end of the stop pin contacts the guide inclined surface, and guides the elastic piece to deform and enter between the positioning rod and the pivot joint. 10 . The display stand according to claim 8 , wherein the through hole is arranged corresponding to the limiting notch; when the mounting plate is perpendicular to the plane, the through hole overlaps the limiting notch. 11 . 11. The display stand according to claim 8, wherein the base further has an outer cover, the sliding switch member is combined with the outer cover, and is movably arranged on the base, and the positioning rod and The resisting rod passes through at least one through hole of the outer cover. 12. The display stand according to claim 2, wherein the operating member is a telescopic device, which is arranged on the base, and the stop pin is arranged on the telescopic device; the telescopic device is used to drive the stop The pin expands and contracts, so that the stop pin is inserted into the limit notch through a through hole of the pivot portion; or, the telescopic device can drive the stop pin to leave the limit notch. 13 . The display stand according to claim 12 , wherein the through hole is arranged corresponding to the limiting notch; when the mounting plate is perpendicular to the plane, the through hole overlaps the limiting notch. 14 . 14. The display stand according to any one of claims 1, 8 or 12, characterized in that, the pivot plate also has a fixing notch, and when the mounting plate is parallel to the plane, the stopper pin fits into the fixing notch . 15. A display device, characterized in that it has: A monitor stand as claimed in any one of claims 1 to 13; and A display has a front and a back, and the back is fixed on the installation board. 16. A display device, characterized in that it has: A monitor stand as claimed in claim 14; and A display has a front and a back, and the back is fixed on the installation board.