TWM547331U - Display stand - Google Patents

Abstract

A display stand including a first frame, a second frame, a rotation frame, and a link lever set is provided. The first frame and the second frame rotatably connect with each other at ends. The rotation frame has a bearing portion and a driving portion and rotatably connects to the first or second frame between the two portions. The link lever set has a first end connecting to the driving portion, a second end connecting to the second frame, and a connecting section between the first and second ends. The connecting section connects to the first frame. While the rotation frame rotates, the driving portion drives the link lever set through the first end to fold the first and second frames, and the bearing portion also rotates to lower down its position.

Description

Display stand

This creation relates to a display stand; in particular, the present invention relates to a display stand for displaying a flat panel display.

Objects such as picture frames or flat-panel displays typically convey information or ideas in a manner that is viewable by a person. However, in order to provide a better viewing angle, such objects need to be arranged in a hanging manner to increase the height of the object setting.

Taking the setting of the flat panel display as an example, the main main suspension methods are two: one is suspended on a fixed wall surface; the other is a suspended vertical stand. When the flat-panel display is hung on a fixed wall, it can obtain a more stable support effect. However, since the wall itself cannot be moved, the position of the flat-panel display cannot be flexibly adjusted. In contrast, when the flat display device is hung on the stand, the position of the flat display can be adjusted by moving the stand.

However, in order to maintain the flat panel display at a predetermined suspension height (for example, a height suitable for viewing by the human eye), the flat panel display is usually disposed at an upper end of the conventional stand, that is, an end farther from the ground. Therefore, when moving the stand and the flat display suspended thereon, such a setting method tends to cause top-heavy and unstable center of gravity, which makes handling difficult.

One of the purposes of this creation is to provide a display stand that can increase the convenience of movement. Sex and mobility.

Another object of the present invention is to provide a display stand that can reduce the center of gravity of the display stand and the items carried during folding.

The display stand of the present invention includes a first tripod, a second tripod, a flip bracket and a link set. The first leg has an opposite first support end and a first connection end; and the second stand has an opposite second support end and a second connection end. The second connecting end is rotatably connected to the first connecting end, so that the first stand and the second stand can be relatively open or close. The inverting bracket has a carrying portion and a driving portion, and the inverting bracket is rotatably coupled to the first leg or the second leg with a portion between the carrying portion and the driving portion. When the force is applied to the driving portion, the bracket can be turned over and the bearing portion at the other end can be rotated.

The link set has a first end, a second end, and a receiving section. The first end is connected to the driving portion; the second end is opposite to the first end, and the second leg is connected between the second supporting end and the second connecting end. The receiving section is located between the first end and the second end, and is connected between the first supporting end and the first connecting end. When the force is applied to invert the flip bracket, the driving portion drives the link group via the first end, and the link group drives the second stand toward the first stand with the second end. At this time, the carrying portion will also rotate the descending height correspondingly to lower the overall center of gravity.

10‧‧‧ Items

100‧‧‧First tripod

101‧‧‧First foot

103‧‧‧First crossbar

105‧‧‧Hinges

107‧‧‧First engagement unit

109‧‧‧Long shaft hole

110‧‧‧First support end

130‧‧‧First connection

150‧‧‧rails

170‧‧‧ guiding slot

200‧‧‧Second stand

201‧‧‧second foot

203‧‧‧Second crossbar

207‧‧‧3rd snap unit

210‧‧‧second support end

230‧‧‧second connection

300‧‧‧ flip bracket

301‧‧‧ side bracket

310‧‧‧ Carrying Department

311‧‧‧Tow bar

313‧‧‧Second snap-in unit

314‧‧‧ horizontal board

315‧‧‧4th snap unit

330‧‧‧ Drive Department

350‧‧‧ shaft

370‧‧‧End

371‧‧‧floor

390‧‧‧Roller

500‧‧‧ linkage group

501‧‧‧ first end

502‧‧‧ second end

503‧‧‧Segment

510‧‧‧first link

511‧‧‧first receiving end

520‧‧‧second link

521‧‧‧second receiving end

530 550‧‧‧ shaft

X‧‧‧Rotary axis

1 is a schematic view of an embodiment of the present invention; FIG. 2 is a schematic view showing another embodiment of the embodiment shown in FIG. 1; 4A is a side view showing the embodiment of the display in the display state; FIG. 4B is a schematic view showing the operation of the embodiment shown in FIG. 4A when the folding is performed; and FIG. 4C is a side view showing the folding and folding state of the embodiment shown in FIG. 4A. FIG. 5 is a schematic view showing another embodiment of the display frame; FIG. 6 is a schematic view showing an embodiment of the display frame having the first engaging unit and the second engaging unit; FIG. 7 is a schematic view showing a modified embodiment of the display frame shown in FIG. 8 is a schematic view showing an embodiment of a display frame having a third engaging unit and a fourth engaging unit; FIG. 9 is a schematic view showing a modified embodiment of the display frame shown in FIG. 8; and FIG. 10 is a schematic view showing another embodiment of the display frame.

This creation provides a display stand for hanging or displaying items. In a preferred embodiment, the display frame is used to hang or display a display, such as a flat panel display, a curved display, etc., in the present specification, a flat panel display is exemplified.

As shown in FIGS. 1 and 2 , the display stand includes a first stand 100 , a second stand 200 , a flip stand 300 , and a link set 500 . The first stand 100 has an opposite first support end 110 and a first connection end 130; and the second stand 200 also has an opposite second support end 210 and a second connection end 230. The second connecting end 230 is rotatably connected to the first connecting end 130. Therefore, the first connecting frame 100 and the second supporting frame 200 can be connected to the first connecting end 130 as a fulcrum, and are relatively open. Or close together. In other words, the first support end 110 and the second support end 210 may also be relatively open or close together as a fulcrum at the junction of the second connection end 230 and the first connection end 130.

Specifically, in the preferred embodiment, the first stand 100 has a pair and a phase The first leg 101 is parallel to each other; the first support end 110 and the first connecting end 130 are respectively located at opposite ends of the first leg 101. In addition, the first leg 100 has a first cross bar 103 that is laterally supported between the two first legs 101. The first crossbar 103 is preferably perpendicular to the extending direction between the first supporting end 110 and the first connecting end 130, that is, the extending direction of the first leg 101 in this embodiment. Similarly, the second stand 200 also has a pair of second legs 201 that are parallel to each other; the second support end 210 and the second connection end 230 are respectively located at opposite ends of the second leg 201. In addition, the second leg frame 200 has a second cross bar 203 that is laterally supported between the two second legs 201. The second crossbar 203 is preferably perpendicular to the extending direction between the second supporting end 210 and the second connecting end 230, that is, the extending direction of the second leg 201 in this embodiment.

In this embodiment, the second connecting end 230 and the first connecting end 130 are connected by a connecting structure, and the connecting structure may be, for example, a hinge 105, whereby the second connecting end 230 and the first connecting end 130 are hinged. The axis of the 105 is relatively rotated as a shaft. Specifically, the two ends of the hinge 105 are respectively connected to the end faces of the second connecting end 230 and the first connecting end 130, so when the display frame is folded, the first leg 101 and the second leg 201 will face each other. One side of the surface abuts. However, in different embodiments, the second connection end 230 and the first connection end 130 may also be pivotally connected or otherwise connected, and is not limited to being connected to the end surface.

The inverting bracket 300 has a carrying portion 310 and a driving portion 330. Preferably, the flip bracket 300 is rotatably coupled to the first stand 100 or the second stand 200 at a portion between the carrying portion 310 and the driving portion 330; in other words, when the flip bracket 300 is rotatably coupled to the first When the stand 100 is connected, the carrying portion 310 and the driving portion 330 are respectively located at two ends of the position where the flip bracket 300 and the first stand 100 are connected. In the present embodiment, the inversion bracket 300 has two side brackets 301 which are paired and parallel as a main body, and a towing rod 311 is disposed at one end to straddle between the two side brackets 301. In this embodiment, The drive unit 330 includes a partial side bracket 301 located between the tow bar 311 and a position where the first stand 100 is coupled. The flip bracket 300 is disposed at the other end of the tow bar 311 with a cross plate 314 spanning between the two side brackets 301 to serve as at least a portion of the carrier portion 310 for hanging the article 10 to be displayed, such as a flat panel display. In the present embodiment, the carrying portion 310 also includes a partial side bracket 301 that is adjacent to and connected to the transverse plate 314.

As shown in FIGS. 1 and 2, the inverting bracket 300 is rotatably coupled to the first leg frame 100 or the second leg frame 200 by the rotation axis X in the direction in which the rotation axis X extends. The extending direction of the rotating shaft X is preferably perpendicular to the extending direction of the flip bracket 300 and the first stand 100 or the second stand 200. Specifically, the extending direction of the rotation axis X is preferably perpendicular to the extending direction of the side bracket 301 and the first leg 101 or the second leg 201. Therefore, when the driving portion 330 is biased, the carrying portion 310 of the other end is rotated about the rotation axis X.

As shown in FIG. 1 and FIG. 2, in the embodiment, the link set 500 includes a first link 510 and a second link 520, and the first link 510 has a first receiving end 511 and a second connecting rod. The second receiving ends 521 of 520 are rotatably coupled. The first link 510 has a first end 501 relative to the first receiving end 511; and the second link 520 has a second end 502 opposite the second receiving end 521. The first end 501 is connected to the driving portion 330; in the embodiment, the first end 501 is connected to a position where the side bracket 301 is close to the towing rod 331. The second end 502 and the first end 501 are opposite ends of the integral link set 500, and are connected between the second support end 210 and the second connection end 230. The first receiving end 511 and the second receiving end 521 are preferably rotatably connected by the shaft 530 as an axis, and the three are formed together as a receiving section 503; wherein the receiving section 503 is connected to the first supporting end 100 at the first supporting end 110 and the first connection end 130.

In this embodiment, as shown in FIG. 3, the first leg 100 is formed with a slide rail 150. The slide rail 150 extends between the first support end 110 and the first connection end 130. The slide rail 150 is preferably formed as an elongated slot, and the shaft 530 extends at least partially into the slide rail 150 to slide along the slide rail 150. However, in various embodiments, the receiving section 503 can also be designed to interact with the rail 150 in other mechanisms other than the shaft 530.

In the embodiment shown in FIG. 4A, the flip bracket 300 is rotatably coupled to the first stand 100 and is coupled to the first stand 100 at a position slightly lower than the first link end 130. However, in various implementations, the flip bracket 300 can also be coupled to the second leg 200. When the display stand is in the display state, as shown in FIG. 4A, the first support end 110 is opened relative to the second support end 210, so that the display stand can stably stand on the support surface. At this time, part of the side bracket 301 is close to the first leg 100, and the towing bar 311 is also close to the first rail 103. In addition, the first connecting end 130 is located between the carrying portion 310 and the first supporting end 110. In other words, in this display state, when the display stand is standing on the ground or other plane providing the support with the first support end 110 and the second support end 210, the carrying portion 310 and the articles carried thereon will be located at the first connection end. 130 and the upper end of the second connecting end 230, so that the article 10 can be located at a preset hanging height (for example, a height suitable for viewing by a human eye).

When the towing lever 311 is lifted up to lift the inverting bracket 300, as shown in FIG. 4B, the driving portion 330 located between the carrying portion 310 and the towing rod 311 drives the connecting rod set 500 via the first end 501. The rod set 500 drives the second stand 200 toward the first stand 100 with the second end 502. Specifically, the first end 501 is moved by the driving portion 330 in a direction away from the first stand 100, and drives the receiving portion 503 via the first link 510. At this time, the shaft 530 slides along the slide rail 150 toward the first connecting end 130, and simultaneously drives the second end 502 via the second link 520 to pull the second stand 200 toward the first stand 100. In addition, since the towing rod 311 and the driving portion 330 are lifted relative to the rotation axis X, the bearing portion 310 is rotated in rotation relative to the rotation axis X, And approaching the second leg 200 and the first stand 100.

As shown in FIG. 4C, when the second stand 200 and the first stand 100 are completely close together, the carrying portion 310 and the carried article 10 are rotated to the side of the second stand 200 and the first stand 100. In other words, the carrying portion 310 and the first supporting end 110 are located on the same side of the first connecting end 130. In this folded state, when the display stand is standing on the ground or other plane providing the support with the first support end 110 or the second support end 210, the center of gravity of the carrying portion 310 and the article 10 carried thereon will be located first. Below the connection end 130 and the second connection end 230. With this design, when the display frame is folded, the center of gravity can be lowered, and it is easier to carry and move. In addition, when the flip bracket 300 is flipped and the first tripod 100 is brought closer to the second tripod 200, the trailing bar 311 and the first support end 110 are respectively located on opposite sides of the first connecting end 130. In other words, when the display stand is standing on the ground or other plane on which the support is provided with the first support end 110 or the second support end 210, the tow bar 311 will be located at the uppermost position of the display stand as a handle for pulling.

The operation flow of the display rack from the collapsed state to the display state is the reverse operation of the above-mentioned operation flow shown in FIG. 4A to FIG. 4C, and details are not described herein.

In this embodiment, the flip bracket 300 is sandwiched between the two first legs 101. Therefore, the connection relationship between the link set 500 and the flip bracket 300 may be blocked by the first leg 101. As shown in FIG. 3, FIG. 4B and FIG. 4C, the first leg 101 is provided with a guiding groove 170 above the sliding rail 150. The first end 501 and the driving portion 330 are preferably rotatably connected with the shaft 550 as an axis; the shaft 550 is preferably pivoted to the first end 501 and the driving portion 330 respectively at the two ends, and at the first end The length of the middle portion between the 501 and the driving portion 330 is not less than the width of the first leg 101. When the display stand is opened and displayed, the middle portion of the shaft 550 is embedded in the first leg 101 along the guiding groove 170, so that the first leg 101 can be completely close to the side bracket 301. Flip the stand when the display frame is folded When the 300 is turned over, the shaft 550 is pulled out of the guiding groove 170 via the driving portion 330, and the subsequent folding operation is continued. However, in different embodiments, as shown in FIG. 5, the driving portion 330 may be protruded from the side bracket 301, so that the shaft 550 pivotally connected to the driving portion 330 of the first end 501 does not overlap with the first leg 101. Interference, so there is no need to provide a guiding groove 170.

In the embodiment shown in FIG. 6, the first cross bar 103 has a first engaging unit 107, and the trailing bar 311 is provided with a second engaging unit 313. When the drag bar 311 is merged with the first cross bar 103, the first engaging unit 107 can be engaged with the second engaging unit 313 to position the relative positional relationship between the flip bracket 300 and the first stand 100. . In the preferred embodiment, the first engaging unit 107 is a groove parallel to the extending direction of the first cross bar 103, and the second engaging unit 313 is a rib extending parallel to the direction of the trailing bar 313. When the towing bar 311 is merged with the first cross bar 103, the rib can be forced into the groove, so that the first cross bar 103 is engaged with the towing bar 311; when the display frame is folded from the display state to When the folding state is set, the rib can be forced out from the groove, and then the flip bracket 300 is turned over to be folded. However, in order to facilitate the ribs to be forced into or out of the groove, the ribs may be arranged in a semi-cylindrical shape to reduce the resistance during forced-in and forced-out. In addition, in different embodiments, the first engaging unit 107 may be a rib, and the second engaging unit 313 may be a groove, or another different type of engaging mechanism.

In the embodiment shown in FIG. 7 , in order to facilitate the engagement of the first engaging unit 107 and the second engaging unit 313 , the connecting mechanism of the first stand 100 or the second stand 200 and the flip bracket 300 can be as follows: setting. When the first stand 100 is rotatably connected to the flip bracket 300, the first leg 101 is formed with an elongated shaft hole 109, and the flip bracket 300 is provided with a shaft 350. The elongated shaft hole 109 extends along the extension direction of the first leg 101. The shaft 350 is rotatably received within the elongated shaft bore 109 and is slidable along the elongated shaft bore 109. When the drag bar 311 is rotated to the first cross bar 103 When the sliding brackets are raised, the pivoting brackets can be lifted upwards, and the shafts 350 are moved along the elongated shaft holes 109 away from the second engaging unit 313, and aligned with the first engaging units 313 at the first engaging units 107. Then put back the flip bracket. In this way, the first engaging unit 107 and the second engaging unit 313 can be easily engaged.

In another embodiment, the carrying portion 310 can also be designed to be similar to the second leg 200. As shown in FIG. 8, the second crossbar 203 has a third engaging unit 207, and the end of the horizontal plate 314 is provided with a fourth engaging unit 315. When the display frame is folded and the horizontal plate 314 is merged with the second horizontal bar 203, the third engaging unit 207 can be engaged with the fourth engaging unit 315 to position the flip bracket 300 and the second leg. The relative positional relationship between the shelves 200. In the preferred embodiment, the third engaging unit 207 is a groove parallel to the extending direction of the second cross bar 203, and the fourth engaging unit 315 is a rib extending parallel to the end edge of the horizontal plate 315. . When the horizontal plate 315 and the second cross bar 203 are brought together, the rib can be forced into the groove, so that the second cross bar 203 is engaged with the horizontal plate 315; when the display frame is unfolded from the folded state When the display is in the state of being installed, the rib can be forced out from the groove, and then the flip bracket 300 is turned over to perform the unfolding. However, in order to facilitate the ribs to be forced into or out of the groove, the ribs may be arranged in a semi-cylindrical shape to reduce the resistance during forced-in and forced-out. In addition, in different embodiments, the third engaging unit 207 may be a rib, and the fourth engaging unit 315 may be a groove, or another different type of engaging mechanism.

In the embodiment shown in FIG. 9, in order to facilitate the engagement of the third engaging unit 207 and the fourth engaging unit 315, the connecting mechanism of the first stand 100 or the second stand 200 and the flip bracket 300 can be as follows setting. When the first stand 100 is rotatably connected to the flip bracket 300, the first leg 101 is formed with an elongated shaft hole 109, and the flip bracket 300 is provided with a shaft 350. The elongated shaft hole 109 extends along the extension direction of the first leg 101. The shaft 350 is rotatably accommodated in the long The shaft hole 109 is inside and is slidable along the elongated shaft hole 109. When the horizontal plate 315 is rotated to be close to the second cross bar 203, the flip bracket can be lifted upward, and the shaft 350 is moved along the elongated shaft hole 109 away from the fourth engaging unit 315, and is moved to the third card. The merging unit 207 is aligned with the fourth engaging unit 315 and then placed back on the flip bracket. In this way, the third engaging unit 207 and the fourth engaging unit 315 can be easily engaged.

In the embodiment shown in FIG. 10, the flip bracket 300 has a trailing end 370 and a roller 390. The tail end 370 is opposite to the driving portion 330 and one end of the towing rod 311 , and the bearing portion 310 is located between the tail end 370 and the driving portion 330 . The roller 390 is disposed on the tail end 37 and protrudes beyond the first support end 110 and the second support end 210 in the folded state. Specifically, a bottom plate 371 is disposed on the tail end 370. The bottom plate 371 is perpendicular to the longitudinal direction of the flip bracket 300, that is, the extending direction of the side bracket 301. When in the folded state, the bottom plate 371 extends from the tail end 370 to below the first support end 110 and the second support end 210, that is, between the first support end 110 and the second support end 210 and the supported ground. Therefore, the bottom plate 371 can serve as a support point for the display frame to be folded and brought into contact with the ground and provide support. One end of the bottom plate 371 is connected to the bottom end 370, and the other end is a free end, and the above-mentioned roller 390 is provided. When the folded display frame is tilted relative to the ground, the roller 390 can be brought into contact with the ground to facilitate the reduction of the drag when the display frame is pulled by the rolling of the roller 390.

This creation has been described by the above related embodiments, but the above embodiments are merely examples for implementing the creation. It must be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and equivalents of the spirit and scope of the invention are included in the scope of the present invention.

10‧‧‧ Items

100‧‧‧First tripod

101‧‧‧First foot

103‧‧‧First crossbar

105‧‧‧Hinges

110‧‧‧First support end

130‧‧‧First connection

200‧‧‧Second stand

201‧‧‧second foot

203‧‧‧Second crossbar

210‧‧‧second support end

230‧‧‧second connection

300‧‧‧ flip bracket

301‧‧‧ side bracket

310‧‧‧ Carrying Department

311‧‧‧Tow bar

314‧‧‧ horizontal board

330‧‧‧ Drive Department

500‧‧‧ linkage group

501‧‧‧ first end

502‧‧‧ second end

503‧‧‧Segment

510‧‧‧first link

511‧‧‧first receiving end

520‧‧‧second link

521‧‧‧second receiving end

X‧‧‧Rotary axis

Claims (14)

A display stand comprising: a first stand having an opposite first support end and a first connection end; a second stand having an opposite second support end and a second connection end; The second connecting end is rotatably connected to the first connecting end, so that the second supporting end can be close to or open relative to the first supporting end; a flip bracket has a carrying portion and a driving portion, wherein the first connecting end a tripod and the second leg are at least rotatably coupled between the carrying portion and the driving portion; and a link set having a first end connecting the driving portion; a second end opposite the first end and connecting the second leg between the second support end and the second connection end; and a receiving section between the first end and the second end And connecting the first tripod between the first support end and the first connection end; wherein, when the flip bracket is turned over and the first tripod is linked to the second tripod via the link set The carrier moves in conjunction with the first stand and the second stand. The display stand of claim 1, wherein the first stand has a slide rail extending between the first support end and the first connection end; the receiving section is attached to the slide rail The first tripod is driven to be close to or open relative to the second stand when sliding. The display stand of claim 2, wherein the link set comprises: a first link having the first end and a first receiving end opposite to the first end; a second link having the a second end and a second receiving end opposite to the second end; and a shaft extending into the sliding rail at least partially to form the receiving section together with the first receiving end and the second receiving end; wherein the first A receiving end and the receiving end rotate relative to each other with the shaft as an axis. The display stand of claim 1, wherein the first leg has a first crossbar perpendicular to an extending direction between the first support end and the first connecting end; the flip bracket includes a tow bar and the first a crossbar parallel, the drive The mooring system is disposed between the carrying portion and the towing bar; when the inverting bracket is turned over and the first leg frame is opened by the link group, the towing bar is close to the first cross bar, Or the towing bar and the first supporting end are located on opposite sides of the first connecting end when the flipping bracket is turned over and the first leg is engaged with the second leg by the link set. The display stand of claim 4, wherein the first stand comprises two first legs that are paired and parallel to each other, the first cross bar is transversely supported between the first legs, and the flipping The bracket is sandwiched between the first legs. The display stand of claim 4, wherein the first crossbar has a first engaging unit, the trailing bar has a second engaging unit; when the trailing bar is close to the first crossbar, The first engaging unit is engaged with the second engaging unit. The display stand of claim 6, wherein the first stand or the second stand connected to the flip bracket is formed with an elongated shaft hole, and the pivot bracket is formed with a shaft rotatably received therein An elongated shaft hole; when the towing rod is close to the first rail, the shaft moves along the elongated shaft hole away from the second engaging unit to allow the first engaging unit and the second The snap units are engaged. The display rack of claim 1, wherein the second leg has a second crossbar perpendicular to an extending direction between the second supporting end and the second connecting end; the carrying portion has an outer edge and the first The two crossbars are parallel; when the flipping bracket is turned over and the first tripod is brought into close contact with the second tripod via the link set, the outer edge is also close to the second crossbar. The display stand of claim 8, wherein the first stand comprises two second legs that are paired and parallel to each other, the second cross bar is transversely supported between the second legs, and the flipping The bracket is sandwiched between the second legs. The display rack of claim 8, wherein the second crossbar has a third engaging unit, and the outer edge has a fourth engaging unit; when the outer edge is close to the second crossbar, The third engaging unit is engaged with the fourth engaging unit. The display stand of claim 10, wherein the first stand or the second stand connected to the flip bracket is formed with an elongated shaft hole, and the pivot bracket is formed with a shaft rotatably received therein An elongated shaft hole; when the outer edge is close to the second crossbar, the shaft moves along the elongated shaft hole away from the third engaging unit The third engaging unit is allowed to engage with the fourth engaging unit. The display rack of claim 1, wherein the flip bracket has: a tail end, the load bearing portion is located between the tail end and the driving portion; and a roller disposed at the tail end; wherein, when the flipping When the bracket is turned over and the first tripod is brought into close contact with the second tripod via the link set, the roller protrudes beyond the first support end and the second support end. The display stand of claim 12, wherein the tail end comprises a bottom plate perpendicular to the longitudinal direction of the flip bracket, and the roller is disposed at one of the free ends of the bottom plate. A display stand comprising: a first stand having an opposite first support end and a first connection end; a second stand having an opposite second support end and a second connection end; The second connecting end is connected to the first connecting end; the inverting bracket has a carrying portion and a driving portion, wherein at least one of the first leg and the second leg is connected to the flip bracket And a connecting rod group, and a connecting rod set having: a first end connected to the driving portion; a second end opposite to the first end, and connecting the second leg to the second support Between the end and the second connecting end; and a receiving portion between the first end and the second end, and connecting the first leg between the first supporting end and the first connecting end.