CN207569494U - support frame - Google Patents

Abstract

A support frame for supporting a display device, the support frame includes a substrate, a gas pressure rod, a tube, a cam, a cantilever, and a connecting piece. The gas pressure rod extends along a first direction, is arranged on the substrate, and has a pressure head. The cam is always in contact with the pressure head, and the cantilever has a first end, which is connected to the cam; the connecting piece is pivotally connected to the cantilever and is used to connect with the display device. When the cantilever rotates from an initial position toward the substrate, the cam is driven to rotate and compress the gas pressure rod, and a reverse elastic force provided by the gas pressure rod increases accordingly, so that the display device can stop at any position.

Description

support frame

technical field

The utility model relates to a support frame, in particular to a support frame for supporting a display device and having a cam and an air pressure rod.

Background technique

U.S. Patent No. 7,252,277 discloses an existing support frame with a proximal link, a remote link, a first pole, a second pole, a spring, and a roller. The first pole and the second strut are respectively pivoted on the proximal link and the remote link, so that the proximal link, the remote link, the first strut and the second strut jointly form a four-bar linkage structure, wherein , the first pole is formed with a chute, the spring and the roller are arranged in the chute, and the roller abuts against the proximal link, when the first pole and the second pole are relative to the When the proximal connecting part rotates, the roller rolls on the periphery of the proximal connecting part, and at the same time affects the spring to generate deformation, so that when the supporting frame moves up and down, correspondingly different supporting forces are generated.

However, the disadvantage of the existing support frame is that the chute must be formed in the inside of the second pole, and there must be a roller, and the structure for fixing the spring and the roller must be located in the chute, so that the second The strut is not only complex in structure, difficult to assemble, but also relatively large in size.

In view of this, the utility model provides a support frame with a novel structure, which has great demand and development potential in this industry.

Utility model content

One of the main purposes of this utility model is to provide a support frame, which can place the cam and the air pressure rod close to the base of the support frame, so as to simplify the structure of the cantilever, and at the same time support the display device and enable the display device to move up and down. With the stop function.

To achieve the above purpose, the support frame of the present invention is used to support a display device. The support frame includes a fixed base, a gas bar and a cantilever. The fixing seat has a base plate, the air pressure rod is arranged on the base plate extending along a first direction, the air pressure rod has a pressure receiving head, and the cantilever has a cam and an arm rod connected to each other, and the cam is pivoted on In the hall body and against the pressure head, the arm bar protrudes out of the tube body, wherein the arm bar can pivotally change between an upward position and a downward position, and drives the cam to rotate, so that the The relative position of the pressure bearing head is changed, so that the air pressure bar produces different elastic forces, so that the display device can be stopped at any time.

The pressure head has a cylinder extending along an axis, a first end of the arm is connected to the cam, and the cam has an inner concave arc surface and an outer protrusion connected to the inner concave arc surface arc surface, when the cantilever is at the raised position, the cylinder of the pressure bearing head is located in the concave arc surface, when the arm lever rotates toward the base plate and rotates around a first axis, the The inner concave arc rotates accordingly, so that the cylinder of the pressure receiving head is away from the inner concave arc, and the outer convex arc contacts the cylinder successively, so as to compress the air pressure rod.

The cylinder further has a rotating part, which rotates around the axis and contacts the cam.

The support frame further includes a connecting piece for connecting a display device, and the connecting piece is pivotally connected to a second end of the arm along a second axis. The connector has a stop slot, and the second end further has a stop column accommodated in the stop slot

The support frame further includes a pipe body, the pipe body is arranged on the base plate, and covers the air pressure rod, the cam is pivotally connected with the pipe body through the first shaft, the pipe body further has an opening, and the arm rod and the connecting rod all extend out from the opening.

In one embodiment, the first direction is parallel to a normal direction of the substrate.

In another embodiment, the first direction is perpendicular to a normal direction of the substrate.

Preferably, the support frame further comprises at least one link, the link has a third end and a fourth end opposite to the third end, the third end pivots along a third axis. Set on the pipe body, the fourth end is pivoted on the connecting piece along a fourth axis, and the connecting rod, the connecting piece, the cantilever and the pipe body are respectively connected to the first axis, the second The shaft, the third shaft and the fourth shaft are connected at the center of the shaft to substantially jointly form a parallel four-bar linkage structure.

The number of the connecting rods is two, the arm rods are arranged between the connecting rods, and the connecting rods are overlapped on the arm rods, the cam has a gap, and a pivot piece passes through the gap to connect with each After being pivoted, the third ends of the connecting rods are pivoted with the pipe body, and the fourth ends of each of the connecting rods are respectively pivoted with the connecting piece. Projections of the cantilever and a direction in which the connecting rod extends along the first axis overlap each other.

In order to make the above objects, technical features, and advantages more comprehensible, the following is a detailed description of preferred embodiments with the accompanying drawings.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a first embodiment of the utility model support frame;

Fig. 2 is a partially exploded schematic view of the first embodiment of the utility model support frame;

Fig. 3 is a schematic diagram of the first embodiment of the support frame of the present invention in an actuation state;

Figure 4 is a schematic diagram of the first embodiment of the support frame of the present invention in another operating state; and

Fig. 5 is a schematic view of the second embodiment of the support frame of the present invention.

[Description of Reference Signs]

1000 support frame

1 holder

11 Substrate

2 air rods

21 pressure pipe

22 piston rod

23 pressure head

231 cylinder

2311 Rotating part

3 tube body

31 openings

5 cantilever

51 cam

511 Concave surface

512 convex arc surface

513 Gap

52 boom

521 first end

522 Second end

53 stop post

6 link

61 third end

62 Fourth end

7 connectors

73 Stop groove

731 Seventh End

732 eighth terminal

2000 display device

A first axis

B second axis

C third axis

D fourth axis

E axis

F normal direction

X first direction

Detailed ways

Please refer to Fig. 1, Fig. 2 and Fig. 3 at the same time. The support frame 1000 of the present invention is used to support a display device 2000. The connecting rod 6 , a connecting piece 7 , a first shaft A, a second shaft B, a third shaft C and a fourth shaft D. The following paragraphs will detail the structure of each component and the connection relationship among them.

The fixing seat 1 has a base plate 11 in the shape of a plate, and defines a normal direction F. In this embodiment, the base plate 11 has a plurality of holes, which can be locked on the desktop or the work surface by screws passing through the holes. However, in this embodiment Other embodiments of the utility model can be directly placed on the table in the form of a block (with a certain weight), or the form of clamping the table board, or even the form of locking the wall.

The air bar 2 extends along a first direction X and is disposed on the substrate 11 , wherein the first direction X is parallel to a normal direction F of the substrate 11 . In detail, the pneumatic rod 2 has a pressure tube 21, a piston rod 22 and a pressure receiving head 23. In this embodiment, the pressure tube 21 is arranged on the base plate 11, and the piston rod 22 is penetrated from the side away from the base plate 11. into the pressure tube 21 to be slidably connected with the pressure tube 21 . The other end of the piston rod 22 is fixedly connected with the pressure receiving head 23 . The bearing head 23 has a cylindrical body 231 extending along an axis E (that is, a direction not parallel to the first direction X), and the cylindrical body 231 has a rotating part 2311, and the rotating part 2311 can rotate around the axis E . The tube body 3 is disposed on the base plate 11 and covers the gas pressure rod 2 .

The cantilever 5 has a cam 51 and an arm 52, the cam 51 is pivotally arranged in the pipe body 3 along a first axis A, and the arm 52 has a first end 521 and a first end 521 opposite to the first end 521. Two ends 522, the first end 521 of the arm 52 is connected to the cam 51, and the arm 52 extends from an opening 31 of the pipe body 3. In this embodiment, the cam 51 and the arm 52 are integrated Shaped, so the whole body can pivot around the first axis A, that is, it can rotate and transform between an upward position in Figure 3 and a downward position in Figure 4, wherein the first axis A is set on the pipe body 3 on the inner surface, and one direction of its extension is substantially perpendicular to the first direction X, but it is not limited thereto. In detail, as shown in FIG. 3 , the cam 51 has an inner concave arc surface 511 and an outer convex arc surface 512 connected with the inner concave arc surface 511. When the cantilever 5 is in an upward position as shown in FIG. 3 , The rotating part 2311 is correspondingly located on the inner concave arc surface 511, and the rotating part 2311 is in contact with the cam 51. Since the piston rod 22 has a constant tendency to push the pressure receiving head 23 away from the pressure tube 21, the cam 51 is constantly in contact with the pressure receiving head 23. top.

Based on the above, in this embodiment, the arms 52 are arranged between the connecting rods 6, and in this embodiment, the connecting rods 6 and the arms 52 are close to each other and overlap each other, that is to say , from a side view, the arm bar 52 can hardly be seen, so that the support frame can achieve the minimum thickness and meet the thinning requirement. Each link 6 has a third end 61 and a fourth end 62 opposite to the third end 61 . Except that the first end 521 of the arm 52 is connected with the cam 51, and the cam 51 is pivotally connected with the pipe body 3 along the first axis A, the second end 522 of the arm 52 is connected with the second axis B along the second axis B. Part 7 is pivotally connected. The cam 51 has a notch 513 opposite to the concave arc surface 511, so that the third shaft C passes through the notch 513, avoids contact with the cam 51, and is respectively pivotally connected with each third end portion 61 of the connecting rod 6, Then pivotally arranged on the pipe body 3, the fourth end 62 is away from the second end 522 of the arm 52, through the fourth axis D, directly pivoted with the connecting piece 7, the first axis A, the second axis B, the second axis The three axes C and the fourth axis D are parallel to each other and perpendicular to the first direction X.

By virtue of the aforementioned components being pivotally connected to each other and rotating around the first axis A, the second axis B, the third axis C, and the fourth axis D respectively, a parallel four-bar linkage structure can be substantially jointly formed. The upper link and the lower link of the existing four-bar linkage are separated up and down from the side and have a large volume, while the cantilever 5 (corresponding to the existing lower link) and the connecting rod 6 (corresponding to the existing upper link) of this case Connecting rods) are overlapped from a side view (projections along a direction in which the first axis A extends are roughly overlapped with each other), so there is a simple appearance.

As shown in FIG. 3 and FIG. 4 , the display device 2000 (as shown by the dotted line) is away from the cantilever 5 and connected to the connecting member 7 . The cantilever 5 rotates from an upward position to a downward position. At this time, the cam 4 rotates around the axis E, and a concave arc surface 511 of the cam 51 rotates accordingly, so that the cylinder 231 of the pressure receiving head 23 and the cylinder 231 rotate. part 2311 is away from the inner concave arc surface 511, and an outer convex arc surface 512 of the cam 4 is continuously in contact with the rotating part 2311, that is, the rotation of the arm lever 52 drives the cam 51 to move, thereby pushing the pressure receiving head 23, and then pushing The piston rod 22 slides in the pressure tube 21, that is, the action of the cam 51 can compress the air pressure rod 2, because the curvature of the convex arc surface 512 is not constant, the closer the cantilever 5 is to the pressing position, the pressure bearing head 23 (and The more the piston rod 22) is pressed down, the opposite elastic force provided by the air rod 2 will increase correspondingly, so that it can compete with the gradually larger amount of moment produced by the weight of the display device 2000 (the closer the cantilever 5 is to In the pressed position, the greater the effective force arm, the greater the moment), thus achieving the effect that the display device 2000 will stop with the display device 2000. And in other embodiments of the present invention, the quantity of the air pressure rods 2 or the elastic force of the air pressure rods 2 can be adjusted according to requirements (for example, according to the weight of the display device 2000 ), which will not be repeated here.

In addition, since the rotating part 2311 is rotatable, the frictional force generated when the cam 51 and the pressure receiving head 23 move relatively can be reduced, thereby reducing the loss of the cam 4 and the pressure receiving head 23 . However, in other embodiments of the present utility model, the rotating part 2311 can also be omitted, so that the cylinder 231 directly leaves the concave arc surface 511 in a sliding manner, and continues to slide on the convex arc surface 512, and can also reach the cam 51 The effect of actuating and compressing the air pressure rod 2 will not be repeated here.

In this embodiment, the connector 7 has a stop groove 73, and the stop groove 73 has a seventh end 731 and an eighth end 732 opposite to the seventh end 731, and the second end 52 of the cantilever 5 A stop post 53 is formed, and the stop post 53 is slidably accommodated in the stop groove 73 . When the cantilever 5 is at a raised position, the stop post 53 is located at the seventh end 731 of the stop slot 73 . When the cantilever 5 is in the downward position, the stop post 53 slides from the seventh end 731 to the eighth end 732 . In other words, the rotation angle of the display device 2000 can be effectively limited through the cooperation of the stop post 53 and the stop groove 73 . However, in other embodiments of the present invention, the structures of the above-mentioned stop groove 73 and stop post 53 can be omitted according to requirements.

In addition, in the second embodiment of the present utility model, as shown in FIG. 5 , the air bar 2 extends along the first direction X, and the first direction X is fixed to the substrate 1 in a state perpendicular to the normal direction F of the substrate 11. Above, the cam 51 is also pivotally connected with the pipe body 3 and connected with the arm bar 52 . Compared with the cam position of the first embodiment of the present utility model, the cam 51 of this embodiment matches the position of the air pressure rod 2, and can rotate an angle so that when the cantilever 5 is located at an initial position, the pressure bearing head 23 can also be It is located in the concave arc surface 511 of the cam 51, and the operation mode of the combination of the pressure receiving head 23 and the cam 51 in this embodiment is the same as that of the first embodiment, whereby the arm 52 can also swing to drive the cam 51 The effect of compressing the air pressure rod 2 will not be repeated here.

To sum up, the utility model sets the cam at one end of the arm, and adjusts the angle of the cam relative to the first end of the arm, so as to arrange the air pressure bar above, below or on one side of the cam accordingly. In addition, the air rod is set between the cam and the base plate, which effectively simplifies the shape of the cantilever and removes the internal chute of the existing support frame, while achieving the support effect of the support frame and shortening the assembly time.

The above-mentioned embodiments are only used to exemplify the implementation of the utility model and explain the technical features of the utility model, and are not intended to limit the protection scope of the utility model. Any change or equivalence arrangement that can be easily accomplished by those skilled in the art all belong to the scope claimed by the utility model, and the protection scope of the utility model shall be subject to the claims.

Claims (11)

1. A support frame for supporting a display device, the support frame comprising: A fixing base, the fixing base has a base plate; an air pressure rod extending along a first direction and disposed on the substrate, the air pressure rod having a pressure receiving head; and a cantilever with a cam and an arm connected to each other, the cam is pivotally arranged in the pipe body and bears against the pressure bearing head, and the arm protrudes out of the pipe body; Wherein, the arm bar can be pivotally transformed between an upward position and a downward position, and drives the cam to rotate, so that the relative position of the pressure bearing head is changed, thereby causing the air pressure bar to generate different elastic forces, so that the display device Can stop at any time. 2. The support frame according to claim 1, wherein the pressure bearing head has a cylinder extending along an axis, a first end of the arm is connected to the cam, and the cam has a concave arc surface and an outer convex arc surface connected with the inner concave arc surface, when the cantilever is at the raised position, the cylinder of the pressure receiving head is located in the inner concave arc surface, when the arm lever rotates toward the base plate , and rotate around a first axis, the inner concave arc rotates accordingly, so that the cylinder of the pressure bearing head is away from the inner concave arc, and the outer convex arc is in continuous contact with the cylinder , to compress the bar. 3 . The support frame according to claim 2 , wherein the cylinder further has a rotating portion, the rotating portion rotates around the axis and contacts the cam. 4 . 4. The supporting frame as claimed in claim 3, further comprising a connecting piece for connecting a display device, the connecting piece is pivotally connected to a second end of the arm along a second axis. 5. The support frame according to claim 4, wherein the connecting member has a stop slot, and the second end further has a stop column accommodated in the stop slot. 6. The support frame according to claim 5, further comprising a tube body, the tube body is arranged on the base plate and covers the air pressure rod, the cam is pivotally connected to the tube body through the first shaft, the tube body The body further has an opening through which the arm and the connecting rod extend. 7. The support frame according to claim 6, wherein the first direction is parallel to a normal direction of the substrate. 8. The support frame according to claim 6, wherein the first direction is perpendicular to a normal direction of the substrate. 9. The support frame according to claim 6, further comprising at least one link, said link having a third end and a fourth end opposite to said third end, said third end extending along A third shaft is pivotally arranged on the pipe body, and the fourth end is pivotally arranged on the connecting piece along a fourth axis. The first shaft, the second shaft, the third shaft and the fourth shaft are connected at the center of the shaft to substantially form a parallel four-bar linkage structure. 10. The support frame according to claim 9, wherein the number of the connecting rods is two, the arm is arranged between the connecting rods, and the connecting rods are overlapped on the arm, the cam has A notch, a pivotal member is pivotally connected to the third end of each connecting rod through the notch, and then pivotally connected to the pipe body, and the fourth end of each connecting rod is respectively connected to the Pivot joints. 11. The support frame according to claim 10, wherein projections of the cantilever and the connecting rod along a direction along which the first axis extends overlap with each other.