JP2022038717A - Stand and display device - Google Patents

Abstract

To provide a stand that can restrict rotation of a display unit depending on weight of the display unit, and a display device.SOLUTION: A stand that supports a display unit is provided, and the stand comprises: a base part; and a swivel part that supports the display unit to be able to rotate relative to the base part. The swivel part comprises: a first rotation part that can rotate relative to the base part around an axis along an upward direction and a downward direction; a second rotation part that is fixed to the display unit, that is arranged upward of the first rotation part, and that rotates integrally with the first rotation part; a rotation axis part that rotates integrally with the first rotation part around the axis and that can move in the upward direction and in the downward direction between a first position and a second position being more downward than the first position; and a restriction part that can restrict rotation of the rotation axis part. The rotation axis part is constituted to receive at least a part of weight of the display unit through the second rotation part, and the restriction part stops rotation of the rotation axis part when the rotation axis part is positioned at the second position.SELECTED DRAWING: Figure 3

Description

The present invention relates to a stand and a display device.

Patent Document 1 describes an image display device including a display unit, a stand that indicates the entire device, and a support leg unit that rotatably supports the display unit with respect to the stand.

JP-A-2007-267260

In the image display device described in Patent Document 1, the display unit is rotatably supported by the support legs regardless of the size of the display unit. If the size of the display unit, that is, the weight is relatively large, the image display device may tip over due to vibration generated when the support legs rotate or stop the rotation.

A main object of the present disclosure is to provide a stand and a display device capable of regulating the rotation of the display unit according to the weight of the display unit.

The stand according to one embodiment is a stand that supports the display unit, and the stand includes a base portion and a swivel portion that rotatably supports the display unit with respect to the base portion. A first rotating portion that can rotate with respect to the base portion and a first rotating portion that is fixed to the display unit and is arranged above the first rotating portion, centering on an axis along the vertical direction. A second rotating portion that rotates integrally with the first rotating portion, and a second rotating portion that rotates integrally with the first rotating portion about the axis and is located between the first position and a second position below the first position. A rotation shaft portion that can move in the vertical direction and a regulation portion that can regulate the rotation of the rotation shaft portion are provided, and the rotation shaft portion is provided with at least one of the weights of the display unit via the second rotation portion. The restricting portion is configured to receive the portion, and the restricting portion stops the rotation of the rotating shaft portion when the rotating shaft portion is located at the second position.

The display device according to one aspect includes a stand according to the above aspect and a display unit instructed by the stand.

FIG. 1 is a perspective view of a television receiving device according to an embodiment. FIG. 2 is a perspective view of a stand included in the television receiver. FIG. 3 is a cross-sectional view of a swivel portion included in the stand. FIG. 4 is a cross-sectional view of the swivel portion. FIG. 5 is a perspective view showing a part of the swivel portion. FIG. 6 is an exploded perspective view of the first rotating portion and the rotating shaft portion included in the swivel portion. FIG. 7 is a perspective view of the second rotating portion included in the swivel portion. FIG. 8 is a diagram illustrating the operation of the rotation shaft and the stopper included in the swivel portion.

Hereinafter, an example of a preferred embodiment of the present invention will be described. However, the following embodiments are merely examples. The present invention is not limited to the following embodiments.

(Embodiment)
A television receiving device 1 which is an example of a display device including a stand according to the present disclosure will be described with reference to FIGS. 1 to 8.

(Configuration of TV receiver and stand)
FIG. 1 is a perspective view showing an example of the television receiving device 1. As shown in FIG. 1, the television receiving device 1 of the present embodiment is a stationary television receiving device 1 placed on, for example, a television stand or the like. As shown in FIG. 1, the television receiving device 1 is an example of a display device, and includes a display unit 2 and a stand 3. Further, although not shown, the television receiving device 1 includes a receiving unit or the like that receives broadcast waves via an antenna. In the following description, the longitudinal direction of the display unit 2 is defined as the left-right direction, the lateral direction of the display unit 2 is defined as the vertical direction, and the thickness direction of the display unit 2 is defined as the front-rear direction (see FIG. 1). However, these directions are defined for convenience for the sake of explanation, and are not intended to limit the directions at the time of use.

The display unit 2 is, for example, a liquid crystal display, and is formed in a rectangular plate shape. The display unit 2 includes a liquid crystal panel for displaying an image with the front surface as a display surface.

FIG. 2 is a perspective view showing an example of the stand 3. The stand 3 supports the display unit 2. The stand 3 is installed on a TV stand, for example, and supports the display unit 2 at a position away from the TV stand. As shown in FIG. 2, the stand 3 includes a base portion 4 and a swivel portion 5.

The base portion 4 is formed in a plate shape with the vertical direction as the thickness direction. When the television receiver 1 is placed on the television stand, the base portion 4 faces the upper surface of the television stand.

(Overview of swivel section)
3 and 4 are views schematically showing a cross section of the swivel portion 5 shown in FIG. 2. 3 and 4 schematically show a cross section of the stand 3 in a plane that passes through the center position in the left-right direction and is parallel to the up-down direction and the front-back direction. FIG. 5 is a perspective view showing each part of the swivel part 5 except for the support column portion 51 and the second rotating part 55, which will be described later. Note that FIG. 3 shows a swivel portion 5 in which the rotary shaft portion 56, which will be described later, is rotatable and is in an unlocked state. Further, FIG. 4 shows a swivel portion 5 in which the rotary shaft portion 56 is in a locked state in which the rotary shaft portion 56 cannot rotate. Hereinafter, the outline of the swivel unit 5 will be described.

The swivel portion 5 supports the display portion 2 with respect to the base portion 4. The swivel unit 5 is configured to switch between a state in which the display unit 2 is rotatably supported and a state in which the display unit 2 is non-rotatably supported according to the weight of the display unit 2.

As shown in FIGS. 3 and 4 or 5, the swivel portion 5 includes a support column portion 51, a fixing plate 52, a bearing 53, a first rotating portion 54, a second rotating portion 55, and a rotating shaft portion 56. , An additional portion 57 (see FIG. 5), a spacer 58, and a regulating portion 59.

The first rotating portion 54 is rotatable with respect to the base portion 4 about the axis C along the vertical direction. The second rotating portion 55 is fixed to the display unit 2 and is arranged above the first rotating portion 54, and rotates integrally with the first rotating portion 54. The rotation shaft portion 56 rotates integrally with the first rotation portion 54 about the axis C, and can move relative to the first rotation portion 54 in the vertical direction. The additional portion 57 applies an upward force to the rotary shaft portion 56 (see FIG. 5). The regulating unit 59 can regulate the rotation of the rotating shaft portion 56.

The rotation shaft portion 56 is configured such that at least a part of the weight of the display portion 2 is applied via the second rotation portion 55. When the weight of the display unit 2 is equal to or greater than a predetermined value, the rotation shaft portion 56 is pushed downward by the second rotation portion 55, and the second position below the first position from the first position (see FIG. 3). Move to (see Fig. 4). On the other hand, the rotating shaft portion 56 maintains the first position (see FIG. 3) when the weight of the display unit 2 is less than a predetermined value.

When the rotating shaft portion 56 is located at the second position, the regulating portion 59 stops the rotation of the rotating shaft portion 56. That is, when the rotating shaft portion 56 is pushed down to the second position by the weight of the display unit 2, the rotation of the rotating shaft portion 56 is stopped. Therefore, according to the above configuration, the rotation of the first rotating portion 54 and the second rotating portion 55, which rotate integrally with the rotating shaft portion 56, can be stopped according to the size (weight) of the display unit 2. Hereinafter, the configuration of the swivel portion 5 of the present embodiment will be described more specifically.

(Structure of swivel part)
The strut portion 51 is formed in a columnar shape extending in the vertical direction. The strut portion 51 is provided so as to project upward from the center and the rear end portion of the base portion 4 in the left-right direction.

The fixing plate 52 is a plate-shaped member and is fixed to the upper end of the support column 51. A through hole 521 is formed in the center of the fixing plate 52, and a rotating shaft portion 56 is inserted along the shaft C.

The bearing 53 is provided on the upper portion of the fixing plate 52. The bearing 53 has a substantially circular tubular outer shape when viewed from the vertical direction. A rotating shaft portion 56 is inserted into the bearing 53 along the shaft C.

The first rotating portion 54 is arranged on the upper portion of the fixing plate 52 with the bearing 53 interposed therebetween. As a result, the first rotating portion 54 can rotate about the axis C with respect to the base portion 4. The first rotating portion 54 is a plate-shaped member and includes a recess 541 and an engaging hole 542.

The recess 541 is formed downward. The recess 541 has a substantially circular shape centered on the axis C in a plan view seen in the vertical direction (see FIG. 6). The depth of the recess 541 is appropriately set according to the distance from the first position to the second position, the thickness of the spacer 58, and the like so that the rotary shaft portion 56 can move from the first position to the second position. ing. By providing the recess 541, the head portion 562 of the rotating shaft portion 56, which will be described later, can be positioned in the recess 541. Therefore, it is possible to prevent the rotary shaft portion 56 from being erroneously pushed downward by the head portion 562 protruding upward from the recess 541. The recess 541 may not be formed, and for example, the rotation shaft portion 56 may protrude upward from the upper surface of the first rotation portion 54.

FIG. 6 is a perspective view showing the first rotating portion 54 and the rotating shaft portion 56. As shown in FIG. 6, the engaging hole 542 is a hole that penetrates the bottom surface of the recess 541 in the vertical direction. The rotating shaft portion 56 is inserted into the engaging hole 542 in the vertical direction and engages with the rotating shaft portion 56. In FIG. 6, the engagement hole 542 has an oval shape having a pair of straight lines facing each other and parallel to each other in a plan view in the vertical direction.

FIG. 7 is a perspective view showing the second rotating portion 55. The second rotating portion 55 has a convex portion 551 extending downward at a position overlapping the shaft C, that is, a position overlapping the rotating shaft portion 56 in the vertical direction. The second rotating portion 55 is located behind the display unit 2 and is fixed to the display unit 2 by a screw. Further, the second rotating portion 55 is arranged on the upper portion of the first rotating portion 54 via the spacer 58. The second rotating portion 55 is fixed to the first rotating portion 54 with screws or the like (not shown). The second rotating portion 55 rotates integrally with the first rotating portion 54 about the axis C.

As shown in FIG. 6, the rotating shaft portion 56 is inserted into the engaging hole 542 from above. The rotating shaft portion 56 can move relative to the first rotating portion 54 in the vertical direction, and can rotate integrally with the first rotating portion 54 around the shaft C, so that the rotating shaft portion 56 can engage with the engaging hole 542. It is configured. The rotating shaft portion 56 has an oval shape substantially similar to the engaging hole 542 of the first rotating portion 54 in a cross section orthogonal to the shaft C. That is, as shown in FIG. 6, the rotation shaft portion 56 has a pair of plane portions that are parallel to each other in the vertical and front-rear directions and face each other. In the present embodiment, it is said that the rotating shaft portion 56 engages with the engaging hole 542 when the pair of flat portions of the rotating shaft portion 56 are in contact with the pair of straight portions of the engaging hole 542. The rotating shaft portion 56 is configured to engage the engaging hole 542 as described above. As a result, the rotating shaft portion 56 can rotate integrally with the first rotating portion 54 and can move relative to the first rotating portion 54 in the vertical direction by a simple configuration.

As shown in FIGS. 3 and 4, a flange portion 561 is attached to the rotating shaft portion 56. The flange portion 561 is attached to the rotating shaft portion 56 at a predetermined position in the vertical direction. The flange portion 561 is rotatably attached to the rotary shaft portion 56 about the shaft C. The flange portion 561 has a substantially circular shape when viewed from the vertical direction. The flange portion 561 is arranged in the first groove portion 511 of the support column portion 51. The first groove portion 511 is formed in the support column portion 51 so as to be along the axis C. The flange portion 561 moves in the vertical direction along the inner wall of the first groove portion 511. As shown in FIG. 3, the rotary shaft portion 56 can move upward to the first position where the flange portion 561 contacts the upper end of the first groove portion 511 (the bottom portion of the first groove portion 511).

A head 562 is provided at the upper end of the rotating shaft portion 56. The head 562 has a substantially circular shape when viewed from the vertical direction, and is larger than the engaging hole 542. As shown in FIG. 4, the rotation shaft portion 56 can move downward to a position (second position) where the lower end of the head portion 562 contacts the first rotation portion 54.

The rotation shaft portion 56 has a hole portion 563 provided along the front-rear direction (intersection direction intersecting the vertical direction). The hole portion 563 is formed so as to penetrate the rotation shaft portion 56 in the front-rear direction. When the rotating shaft portion 56 is located at the second position, the stopper 591 of the regulating portion 59 is inserted from behind the rotating shaft portion 56. That is, the second position is a lock position where the rotation of the rotation shaft portion 56 is stopped. Further, an arbitrary position (including the first position) above the second position is a non-locking position where the rotation shaft portion 56 can rotate.

Further, the inner surface of the hole portion 563 has a tapered shape so that the hole diameter increases toward the rear. In other words, the inner surface of the hole portion 563 has a tapered shape so that the hole diameter increases toward the opening end 563B on the side where the stopper 591 of the regulating portion 59 of the hole portion 563 is inserted. In this embodiment, the inner surface of the hole 563 has an inclined surface 563A that is inclined downward toward the opening end 563B (that is, toward the rear).

As shown in FIG. 5, the additional portion 57 is a coil spring. The swivel portion 5 of the present embodiment includes two additional portions 57. Two additional portions 57 are arranged on each of the left and right sides with respect to the rotation shaft portion 56. The additional portion 57 is provided so that an elastic force acts in the vertical direction. The lower end of the additional portion 57 is fixed to the flange portion 561. The upper end of the addition portion 57 is fixed to the fixing plate 52. The additional portion 57 exerts an upward elastic force on the rotating shaft portion 56. Specifically, when the rotating shaft portion 56 is in the second position, the additional portion 57 is in a state of being elastically deformed so as to extend in the vertical direction from the steady state. Therefore, when the rotary shaft portion 56 is in the second position, the additional portion 57 exerts an upward elastic force on the rotary shaft portion 56 via the flange portion 561. That is, when the rotary shaft portion 56 is in the second position, the additional portion 57 exerts a force on the rotary shaft portion 56 from the second position to the first position. As a result, for example, when the display unit 2 is removed from the swivel unit 5 and the downward force applied to the rotary shaft portion 56 is released, the elastic force of the additional portion 57 causes the rotary shaft portion 56 to move from the second position to the second position. It can be moved to one position. Further, when no downward force is applied to the rotary shaft portion 5 or the downward force is relatively weak, the elastic force of the additional portion 57 can maintain the position of the rotary shaft portion 56 at the first position. can.

The spacer 58 is an elastic member arranged between the first rotating portion 54 and the second rotating portion 55. The spacer 58 is, for example, a hard foamed resin material, and at least a part of the weight of the display unit 2 is applied via the second rotating portion 55 to elastically deform the spacer 58. When the weight of the display unit 2 exceeds a predetermined value, the amount of deformation of the spacer 58 in the vertical direction is the distance dimension from the first position to the second position. The second rotating portion 55 moves downward due to the elastic deformation of the spacer 58. Along with this, the rotating shaft portion 56 is pressed downward by the convex portion 551 of the second rotating portion 55, and is pushed down from the first position to the second position. On the other hand, when the weight of the display unit 2 is less than a predetermined value, the amount of deformation of the spacer 58 in the vertical direction is less than the distance dimension from the first position to the second position. Therefore, when the weight of the display unit 2 is less than a predetermined value, the rotary shaft unit 56 is not pushed down from the first position to the second position.

The regulating unit 59 includes a stopper 591 and a spring 592. When the rotary shaft portion 56 is located at the second position, the stopper 591 is inserted into the hole portion 563 of the rotary shaft portion 56. As shown in FIGS. 3 and 4, the stopper 591 is a columnar member extending in the front-rear direction, and is arranged on the support column 51 so as to be movable in the front-rear direction. Further, the stopper 591 is arranged at a position where the rotary shaft portion 56 overlaps with the hole portion 563 of the rotary shaft portion 56 in the front-rear direction when the rotary shaft portion 56 is located at the second position.

The spring 592 is an example of the second additional portion, and applies a forward force to the stopper 591. The stopper 591 and the spring 592 are arranged in the second groove portion 512 provided in the support portion 51. The second groove portion 512 is formed in the support column portion 51 along the front-rear direction. The spring 592 is arranged behind the stopper 591 in the second groove portion 512. The spring 592 exerts a forward elastic force on the stopper 591. When the rotating shaft portion 56 is located at the first position, the stopper 591 is not inserted into the hole portion 563 because the positions of the hole portion 563 of the rotating shaft portion 56 and the stopper 591 in the vertical direction are displaced from each other. On the other hand, when the rotary shaft portion 56 is in the second position, the holes 563 of the rotary shaft portion 56 and the stopper 591 are in the same vertical positions, so that the stopper 591 moves forward due to the elastic force of the spring 592. As a result, it is inserted into the hole 563 (see FIG. 4). That is, when the rotary shaft portion 56 is moved to the second position by the spring 592, the stopper 591 can be inserted into the hole portion 563.

(Operation of stand 3)
The stand 3 configured as described above can switch between a locked state in which the rotating shaft portion 56 cannot rotate and a non-locked state in which the rotating shaft portion 56 can rotate, depending on the weight of the display unit 2. That is, when the display unit 2 has a relatively large size and exceeds a predetermined weight, as shown in FIG. 4, the rotary shaft portion 56 is pressed downward by the convex portion 551 of the second rotating portion 55, and the first It is pushed down from the position to the second position (lock position). When the rotary shaft portion 56 is pushed down to the second position, the stopper 591 is inserted into the hole portion 563. As a result, the rotary shaft portion 56 is locked.

On the other hand, when the weight of the display unit 2 is equal to or less than the predetermined weight, the rotating shaft portion 56 is not pushed down to the second position due to the action of the elastic force of the spacer 58 and the upward force of the additional portion 57, and is in an unlocked state. It remains (see Figure 3). By providing the spacer 58, a spring having a smaller spring constant can be used as the additional portion 57 as compared with the case where the spacer 58 is not provided. For example, the addition unit 57 may be able to apply a force necessary to position the rotary shaft unit 56 in a state where no force corresponding to the weight from the display unit 2 is applied above the second position. ..

The inner surface of the hole 563 has an inclined surface 563A that is inclined toward the rear. Therefore, even when the rotating shaft portion 56 is pushed down to the second position and becomes locked, the second rotating portion 55 is removed to remove the weight of the display portion applied to the rotating shaft portion 56 to rotate the rotating shaft portion 56. The shaft portion 56 can be returned from the locked state to the unlocked state. FIG. 8 is a diagram schematically showing how the rotary shaft portion 56 changes from the locked state to the unlocked state. As shown in FIG. 8, when the second rotating portion 55 is removed, the rotating shaft portion 56 is pushed up by receiving an upward force from the additional portion 57. At the same time, the stopper 591 is pushed backward by receiving a force toward the rear from the inclined surface 563A. In this way, the stopper 591 is pushed out from the hole 563 and returns from the locked state to the unlocked state.

(Modification example)
Hereinafter, a modified example of the stand 3 and the television receiving device according to the above embodiment will be described. The modifications described below can be applied in combination with the above embodiments as appropriate.

The configuration in which the inner surface of the hole portion 563 has a tapered shape is exemplified, but the present invention is not limited to this. The inner surface of the hole portion may be configured to be inclined downward toward the regulating portion 59 and to have an inclined surface that can be brought into contact with the stopper 591 from below. For example, only the lower side of the inner surface of the hole portion may be an inclined surface that inclines toward the regulating portion 59. The hole portion may be formed so as to be inclined toward the regulation portion 59, and the hole diameter of the hole portion may be constant. The inner surface of the hole 563 may not have the inclined surface 563A.

In order to allow the rotary shaft portion 56 to rotate integrally with the first rotary portion 54, the shape of the engaging hole 542 and the cross-sectional shape of the rotary shaft portion 56 are configured to substantially match in an oval shape. It was, but it is not limited to this. For example, the shape of the engaging hole 542 and the cross-sectional shape of the rotating shaft portion 56 may be various polygons such as a rectangle. The rotating shaft portion 56 can rotate integrally with the first rotating portion 54 by contacting the inner peripheral surface of the engaging hole with the rotating shaft portion on a plurality of sides.

As the additional portion 57, a pair of springs arranged on the left and right sides of the rotating shaft portion 56 are exemplified, but the number and arrangement positions of the springs are not limited to the above example. For example, three or more springs may be arranged around the rotating shaft portion 56. Further, for example, the spring may be arranged so as to be wound around the rotating shaft portion 56 between the bottom surface of the recess 541 and the head portion 562 of the rotating shaft portion 56. In addition to the spring, for example, a configuration may be adopted so as to apply an upward force to the rotating shaft portion 56 by a magnetic force. Further, it is not necessary to provide the additional portion 57.

In the above embodiment, the spacer (elastic member) is provided, but the spacer may not be provided. In this case, the rotary shaft portion 56 is locked when the rotary shaft portion 56 is pushed down to the second position against the upward force of the additional portion 57. When the weight of the display unit 2 is equal to or less than the predetermined weight, the addition unit 57 applies an upward force that can maintain the rotary shaft portion 56 to the unlocked position above the second position to the rotary shaft portion 56. It is configured to be able to.

The restricting portion is configured to push the stopper into the hole of the rotating shaft portion pushed down to the second position by a spring, but the present invention is not limited to this. For example, the regulating unit includes a detecting means for detecting that the rotating shaft portion is located at the second position, and a driving means for driving the stopper in the front-rear direction, including a motor and a rail, based on the detection result. The stopper may be configured to be inserted into the hole.

1 TV receiver 2 Display 3 Stand 4 Base 5 Swivel 51 Strut 52 Fixed plate 53 Bearing 54 1st rotating part 55 2nd rotating part 56 Rotating shaft part 57 Addition part 58 Spacer 59 Restricting part 511 1st groove part 512 2nd groove 521 Through hole 541 Recessed hole 542 Engagement hole 551 Convex part 561 Flange part 562 Head 563 Hole part 563A Inclined surface 563B Opening end 591 Stopper 592 Spring C axis

Claims (9)

A stand that supports the display
The stand includes a base portion and a swivel portion that rotatably supports the display portion with respect to the base portion.
The swivel part is
A first rotating part that can rotate with respect to the base part around an axis along the vertical direction,
A second rotating portion fixed to the display unit, arranged above the first rotating unit, and rotating integrally with the first rotating unit, and a second rotating unit.
A rotating shaft portion that rotates integrally with the first rotating portion around the shaft and can move up and down between the first position and the second position below the first position.
A regulation unit capable of regulating the rotation of the rotation shaft portion is provided.
The rotating shaft portion is configured to receive at least a part of the weight of the display portion via the second rotating portion.
The restricting portion stops the rotation of the rotating shaft portion when the rotating shaft portion is located at the second position.
stand. When the rotating shaft portion is located at the second position, an additional portion that applies a force toward the first position with respect to the rotating shaft portion is further provided.
The stand according to claim 1. The rotation shaft portion has a hole portion provided along an intersection direction intersecting the vertical direction.
The restricting portion has a stopper that is inserted into the hole portion when the rotating shaft portion is located at the second position.
The stand according to claim 1 or 2. The restricting portion has a second additional portion that applies a force toward the rotation shaft portion along the crossing direction with respect to the stopper.
The stand according to claim 3. The inner surface of the hole has an inclined surface that is inclined downward toward the opening end on the side where the stopper is inserted in the hole.
The stand according to claim 4. The first rotating portion includes an engaging hole through which the rotating shaft portion is inserted in the vertical direction.
The rotating shaft portion can engage with the engaging hole so as to be relatively movable in the vertical direction with respect to the first rotating portion and to be integrally rotatable with the first rotating portion around the shaft. Is configured in,
The stand according to any one of claims 1 to 5. An elastic member arranged between the first rotating portion and the second rotating portion is further provided.
The elastic member receives at least a part of the weight of the display portion via the second rotating portion.
The stand according to any one of claims 1 to 6. When the display portion of the elastic member has a predetermined weight or more, the amount of deformation in the vertical direction is at least the distance dimension from the first position to the second position.
The stand according to claim 7. The stand according to any one of claims 1 to 8 and the stand.
The stand is provided with a display unit indicated by the stand.
Display device.

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