TWI461631B - Foldable frame - Google Patents

Description

Foldable frame

The invention relates to a foldable frame body, in particular to a foldable frame body which utilizes magnetic attraction to achieve a fastening function.

At present, many devices or devices have a foldable frame for the purpose of convenient collection and carrying. When the foldable frame is folded, due to its own elastic deformation or design requirements, a force is generated to prevent the frame of the foldable frame from being fixed at the desired folding position. Generally, the foldable frame body is provided with a fastening mechanism (for example, a hook, a click, etc.) to fasten the brackets together after the foldable frame body is folded. However, the fastening mechanism designed with the structure of the hook, the card and the like often has a great influence on the design of the product, destroying the visual effect of the appearance of the product, thereby reducing the willingness of the consumer to purchase the product.

Accordingly, it is an object of the present invention to provide a foldable frame body that utilizes magnetic attraction to achieve a snap-fit function to solve the above problems.

According to an embodiment, the foldable frame body of the present invention comprises a first bracket, a second bracket, a third bracket and a rotating shaft. The first bracket has a first magnetic zone. One of the first ends of the second bracket is pivotally connected to the first bracket. The rotating shaft is fixed on the third bracket, and the second end of the second bracket is pivotally connected to the rotating shaft, wherein the first end is opposite to the second end. The shaft has a second magnetic region, and a magnetic attraction is generated between the second magnetic region and the first magnetic region. When the second bracket and the rotating shaft are relatively close to the first bracket, and the rotation angle of the third bracket and the rotating shaft relative to the first bracket is less than a predetermined rotation angle, the first magnetic region and the second magnetic region are relatively close to each other, so that the magnetic attraction is greater than a preset Locking value. When the second bracket and the rotating shaft are relatively close to the first bracket, and the rotation angle of the third bracket and the rotating shaft relative to the first bracket is greater than a preset rotation angle, the first magnetic region and the second magnetic region are relatively far apart, so that the magnetic attraction force is less than the preset locking value.

In summary, the present invention places the first magnetic zone on the first bracket and the second magnetic zone on the rotating shaft. When the second bracket and the rotating shaft are relatively close to the first bracket, and the rotation angle of the third bracket and the rotating shaft relative to the first bracket is less than a preset rotation angle, the first magnetic region and the second magnetic region are relatively close to each other, so that the magnetic attraction force is greater than the preset locking The value, the magnetic attraction at this time, allows the second bracket and the third bracket of the foldable frame to be fixed at the desired folding position relative to the first bracket. The preset locking value is the magnitude of the force applied by any user to deploy the second bracket and the third bracket relative to the first bracket. In other words, when the magnetic attraction is greater than the preset locking value, the user cannot easily deploy the second bracket and the third bracket relative to the first bracket. On the other hand, when the second bracket and the rotating shaft are relatively close to the first bracket, and the rotation angle of the third bracket and the rotating shaft relative to the first bracket is greater than a preset rotation angle, the first magnetic region and the second magnetic region are relatively far away, so that the magnetic attraction force is less than Preset lock value. At this time, the user can easily deploy the second bracket and the third bracket relative to the first bracket. Since the foldable frame system of the present invention utilizes the magnetic attraction force to achieve the fastening function, there is no obvious fastening structure in the appearance of the product, and both the fastening function and the design requirement can be considered at the same time.

The advantages and spirit of the present invention can be illustrated by the following detailed description and the accompanying drawings. Get a better understanding.

1 to 3, FIG. 1 is a developed perspective view of a foldable frame body 1 according to an embodiment of the present invention, and FIG. 2 is a collapsed side view of the foldable frame body 1 of FIG. Figure 3 is a side elevational view of the foldable frame 1 of Figure 2 during deployment. As shown in FIGS. 1 to 3, the foldable frame body 1 includes a first bracket 10, a second bracket 12, a third bracket 14, a rotating shaft 16, and a hinge. In this embodiment, the foldable frame 1 can be a foldable light stand, but is not limited thereto. When the foldable frame body 1 is a foldable light frame, a light-emitting unit (for example, a light bulb, a light tube, a light-emitting diode, etc.) is disposed on the third frame 14 to be unfolded in the foldable frame body 1 In the state shown in Figure 1, the light is emitted to achieve the illumination function. In addition, the structure of the pivot shaft 18 and its principle of operation are well known to those skilled in the art and will not be described herein.

The first bracket 10 has a first magnetic zone 100. The first end E1 of the second bracket 12 is pivotally connected to the first bracket 10 by the pivot shaft 18. The rotating shaft 16 is fixed on the third bracket 14, and the second end E2 of the second bracket 12 is pivotally connected to the rotating shaft 16, wherein the first end E1 is opposite to the second end E2. The rotating shaft 16 has a second magnetic region 160, and a magnetic attraction is generated between the second magnetic region 160 and the first magnetic region 100. One of the first magnetic region 100 and the second magnetic region 160 may be a magnetic member (eg, a magnet), and the other of the first magnetic region 100 and the second magnetic region 160 may be a magnetic member (eg, Magnet) or a magnetically conductive material (for example, iron or other metal). In this embodiment, the first magnetic region 100 and the second magnetic region 160 may both be magnets and have opposite polarities. In another implementation In an example, the first magnetic region 100 can be a magnet and the second magnetic region 160 can be iron or other metal. In another embodiment, the first magnetic region 100 can be iron or other metal, and the second magnetic region 160 can be a magnet. In addition, in this embodiment, the second magnetic region 160 is circular, but is not limited thereto.

As shown in FIGS. 2 and 3, the first magnetic region 100 has an effective magnetic force range 102. When the second bracket 12 and the rotating shaft 16 are relatively close to the first bracket 10, and the rotation angle of the third bracket 14 and the rotating shaft 16 relative to the first bracket 10 is less than a predetermined rotation angle α, the first magnetic region 100 is opposite to the second magnetic region 160. Proximity, that is, the second magnetic region 160 is located within the effective magnetic force range 102 of the first magnetic region 100 (as shown in FIG. 2), so that the magnetic attraction between the second magnetic region 160 and the first magnetic region 100 is greater than one Set the lock value. When the second bracket 12 and the rotating shaft 16 are relatively close to the first bracket 10, and the rotation angle of the third bracket 14 and the rotating shaft 16 relative to the first bracket 10 is greater than the preset rotation angle α, the first magnetic region 100 and the second magnetic region 160 are relatively far away. That is, the second magnetic region 160 leaves the effective magnetic force range 102 of the first magnetic region 100 (as shown in FIG. 3), so that the magnetic attraction is less than the preset locking value. The preset rotation angle α refers to the rotation angle of the third bracket 14 and the rotating shaft 16 with respect to the first bracket 10 when the second magnetic region 160 just leaves the effective magnetic force range 102 of the first magnetic region 100, as shown in FIG. The preset locking value is the magnitude of the force applied by the second bracket 12 and the third bracket 14 relative to the first bracket 10 by any user.

When the user wants to expand the foldable frame 1 from the collapsed state shown in FIG. 2 to the expanded state shown in FIG. 1 , the user can apply force to the third bracket 14 to make the third bracket 14 and the shaft 16 Turn clockwise CW. When the third bracket 14 is opposite to the rotating shaft 16 When the rotation angle of the first bracket 10 is less than the preset rotation angle α, the first magnetic region 100 and the second magnetic region 160 are relatively close, that is, the second magnetic region 160 is located within the effective magnetic force range 102 of the first magnetic region 100. At this time, the magnetic attraction between the second magnetic region 160 and the first magnetic region 100 is greater than a preset locking value. Therefore, the second bracket 12 and the rotating shaft 16 are still relatively close to the first bracket 10, that is, the external force applied to the third bracket 14 cannot drive the second bracket 12 to rotate relative to the first bracket 10, so that the second bracket 12 cannot A bracket 10 is relatively far away. If the user releases the external force on the third bracket 14 when the rotation angle of the third bracket 14 and the rotating shaft 16 relative to the first bracket 10 is less than the preset rotation angle α, the second magnetic region 160 and the first magnetic region 100 are The magnetic attraction causes the third bracket 14 and the rotating shaft 16 to rotate in the counterclockwise direction CCW, thereby returning to the collapsed state shown in FIG.

On the other hand, if the user increases the external force applied to the third bracket 14 such that the rotation angle of the third bracket 14 and the rotating shaft 16 relative to the first bracket 10 is greater than the preset rotation angle α, the first magnetic region 100 and the second magnetic region 160 is relatively far away, that is, the second magnetic region 160 is separated from the effective magnetic range 102 of the first magnetic region 100, as shown in FIG. At this time, the magnetic attraction between the second magnetic region 160 and the first magnetic region 100 is weakened to less than a preset locking value. When the magnetic attraction is less than the preset locking value, the external force applied by the user to the third bracket 14 can drive the second bracket 12 to rotate clockwise CW relative to the first bracket 10, so that the second bracket 12 and the first bracket 10 is relatively far away and is expanded to the expanded state shown in Fig. 1.

When the user wants to fold the foldable frame 1 from the unfolded state shown in FIG. In the collapsed state shown in FIG. 2, the user can apply force to the third bracket 14 to cause the third bracket 14 and the rotating shaft 16 to rotate the second bracket 12 in the counterclockwise direction CCW. When the second bracket 12 and the rotating shaft 16 are relatively close to the first bracket 10, and the rotation angle of the third bracket 14 and the rotating shaft 16 relative to the first bracket 10 is less than the preset rotation angle α, the first magnetic region 100 and the second magnetic region 160 are relatively close to each other. That is, the second magnetic region 160 is located within the effective magnetic force range 102 of the first magnetic region 100, as shown in FIG. At this time, the magnetic attraction between the second magnetic region 160 and the first magnetic region 100 is greater than a preset locking value, so that the foldable frame body 1 can be combined into the collapsed state shown in FIG. In other words, the present invention utilizes the magnetic attraction between the second magnetic region 160 and the first magnetic region 100 to achieve the snap-fit function.

Please refer to FIG. 4 and FIG. 5, FIG. 4 is a side view of the folding frame 3 according to another embodiment of the present invention, and FIG. 5 is a view showing the folding frame 3 of FIG. Side view in the middle. The main difference between the foldable frame 3 and the aforementioned foldable frame 1 is that the second magnetic zone 160 of the foldable frame 3 is fan-shaped. In other words, the shape of the second magnetic region 160 can have different designs depending on the actual application. It should be noted that the components of the same reference numerals as those shown in the first to third embodiments in FIGS. 4 to 5 have substantially the same operation principle and will not be described again.

Please refer to FIG. 6 and FIG. 7 , FIG. 6 is a side view of the folding frame 5 according to another embodiment of the present invention, and FIG. 7 is a view showing the folding frame 5 of FIG. 6 during the unfolding process. Side view in the middle. The main difference between the foldable frame 5 and the aforementioned foldable frame 1 is that the rotating shaft 16 of the foldable frame 5 further has a third magnetic region 162, wherein the third magnetic region 162 is adjacent to the second magnetic region 160, and Third magnetic region 162 and first magnetic A magnetic repulsive force is generated between the sexual regions 100. In this embodiment, the first magnetic region 100 and the third magnetic region 162 are respectively a magnetic member (for example, a magnet), and the second magnetic region 160 is a magnetic member (for example, a magnet) or a magnetic conductive material (for example). , iron or other metals). As shown in FIGS. 6 and 7, the first magnetic region 100 and the third magnetic region 162 have the same polarity, and the first magnetic region 100 and the second magnetic region 160 have opposite polarities.

When the second bracket 12 and the rotating shaft 16 are relatively close to the first bracket 10, and the rotation angle of the third bracket 14 and the rotating shaft 16 relative to the first bracket 10 is greater than the preset rotation angle α, the first magnetic region 100 and the second magnetic region 160 are relatively far away. The first magnetic region 100 is relatively close to the third magnetic region 162, and the magnetic repulsion between the first magnetic region 100 and the third magnetic region 162 is greater than a predetermined bounce value, so that the rotating shaft 16 bounces off from the first bracket 10. . At this time, the external force exerted by the user on the third bracket 14 can easily drive the second bracket 12 to rotate clockwise CW relative to the first bracket 10, so that the second bracket 12 is relatively far away from the first bracket 10. The preset pop-up value described above may be defined as the maximum static friction of the rotating shaft between the first bracket 10 and the second bracket 12. It should be noted that the components of the same reference numerals as those shown in FIGS. 1 to 3 are substantially the same, and will not be described again.

Please refer to FIG. 8 and FIG. 9. FIG. 8 is a side view of the foldable frame body 7 according to another embodiment of the present invention, and FIG. 9 is a view showing the folding frame body 7 of FIG. Side view in the middle. The main difference between the foldable frame 7 and the aforementioned foldable frame 1 is that the first bracket 10 of the foldable frame 7 further has a third magnetic zone 104, wherein the third magnetic zone 104 is adjacent to the first magnetic zone 100. And a magnetic repulsive force is generated between the third magnetic region 104 and the second magnetic region 160. In this embodiment, the second magnetic region 160 A magnetic member (for example, a magnet) is attached to the third magnetic region 104, respectively, and the first magnetic region 100 is a magnetic member (for example, a magnet) or a magnetic conductive material (for example, iron or other metal). As shown in FIGS. 8 and 9, the second magnetic region 160 has the same polarity as the third magnetic region 104, and the second magnetic region 160 has the opposite polarity to the first magnetic region 100.

When the second bracket 12 and the rotating shaft 16 are relatively close to the first bracket 10, and the rotation angle of the third bracket 14 and the rotating shaft 16 relative to the first bracket 10 is greater than the preset rotation angle α, the second magnetic region 160 is relatively far away from the first magnetic region 100. The second magnetic region 160 is relatively close to the third magnetic region 104, and the magnetic repulsion between the second magnetic region 160 and the third magnetic region 104 is greater than a predetermined bounce value, so that the rotating shaft 16 bounces off from the first bracket 10. . At this time, the external force exerted by the user on the third bracket 14 can easily drive the second bracket 12 to rotate clockwise CW relative to the first bracket 10, so that the second bracket 12 is relatively far away from the first bracket 10. The preset pop-up value described above may be defined as the maximum static friction of the rotating shaft between the first bracket 10 and the second bracket 12. It should be noted that the components of the same reference numerals as those shown in the first to third figures in FIGS. 8 to 9 have substantially the same principle of operation, and are not described herein again.

In summary, the present invention places the first magnetic zone on the first bracket and the second magnetic zone on the rotating shaft. When the second bracket and the rotating shaft are relatively close to the first bracket, and the rotation angle of the third bracket and the rotating shaft relative to the first bracket is less than a preset rotation angle, the first magnetic region and the second magnetic region are relatively close to each other, so that the magnetic attraction force is greater than the preset locking The value, the magnetic attraction at this time, allows the second bracket and the third bracket of the foldable frame to be fixed at the desired folding position relative to the first bracket. The preset locking value is the magnitude of the force applied by any user to deploy the second bracket and the third bracket relative to the first bracket. In other words, when the magnetic attraction is greater than the preset When the value is locked, the user cannot easily deploy the second bracket and the third bracket relative to the first bracket. On the other hand, when the second bracket and the rotating shaft are relatively close to the first bracket, and the rotation angle of the third bracket and the rotating shaft relative to the first bracket is greater than a preset rotation angle, the first magnetic region and the second magnetic region are relatively far away, so that the magnetic attraction force is less than Preset lock value. At this time, the user can easily deploy the second bracket and the third bracket relative to the first bracket.

In addition, the present invention may add a third magnetic region on the rotating shaft or the first bracket to generate a magnetic repulsive force between the first magnetic region or the second magnetic region. When the second bracket and the rotating shaft are relatively close to the first bracket, and the rotation angle of the third bracket and the rotating shaft relative to the first bracket is greater than a preset rotation angle, the magnetic repulsion force is greater than a preset elastic opening value, so that the rotating shaft is bounced from the first bracket. Thereby, the user can easily deploy the second bracket and the third bracket relative to the first bracket.

Since the foldable frame system of the present invention utilizes the magnetic attraction force to achieve the fastening function, there is no obvious fastening structure in the appearance of the product, and both the fastening function and the design requirement can be considered at the same time.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

1, 3, 5, 7‧‧‧ foldable frame

10‧‧‧First bracket

12‧‧‧second bracket

14‧‧‧ Third bracket

16‧‧‧ shaft

18‧‧‧ pivot shaft

100‧‧‧First Magnetic Zone

102‧‧‧effective magnetic range

104, 162‧‧‧ third magnetic zone

160‧‧‧Second magnetic zone

E1‧‧‧ first end

E2‧‧‧ second end

α‧‧‧Preset corner

CW‧‧‧clockwise

CCW‧‧‧counterclockwise

S, N‧‧‧ polar

Fig. 1 is a developed perspective view of a foldable frame body in accordance with an embodiment of the present invention.

Figure 2 is a side view of the folding frame of Figure 1 in a folded view.

Figure 3 is a side elevational view of the foldable frame of Figure 2 during deployment.

Figure 4 is a side elevational view of the collapsible frame in accordance with another embodiment of the present invention.

Figure 5 is a side elevational view of the foldable frame of Figure 4 during deployment.

Fig. 6 is a side view showing the folding of the foldable frame according to another embodiment of the present invention.

Figure 7 is a side elevational view of the foldable frame of Figure 6 during deployment.

Figure 8 is a side view of the folding frame 7 according to another embodiment of the present invention.

Figure 9 is a side elevational view of the foldable frame of Figure 8 during deployment.

1‧‧‧Foldable frame

10‧‧‧First bracket

12‧‧‧second bracket

14‧‧‧ Third bracket

16‧‧‧ shaft

18‧‧‧ pivot shaft

100‧‧‧First Magnetic Zone

102‧‧‧effective magnetic range

160‧‧‧Second magnetic zone

E1‧‧‧ first end

E2‧‧‧ second end

α‧‧‧Preset corner

CW‧‧‧clockwise

CCW‧‧‧counterclockwise

S, N‧‧‧ polar

Claims (10)

A foldable frame body comprising: a first bracket having a first magnetic region; a second bracket, a first end of the second bracket pivotally connected to the first bracket; a third bracket; and a rotating shaft Fixing on the third bracket, the second end of the second bracket is pivotally connected to the rotating shaft, the first end is opposite to the second end, the rotating shaft has a second magnetic region, and the second magnetic region a magnetic attraction is generated between the first magnetic region and the first magnetic region; wherein the second bracket is relatively close to the first bracket and the rotation angle of the third bracket and the rotating shaft relative to the first bracket is less than a predetermined rotation angle The first magnetic region is relatively close to the second magnetic region, such that the magnetic attraction is greater than a predetermined locking value; when the second bracket is relatively close to the first bracket, and the third bracket is When the rotation angle of the rotating shaft relative to the first bracket is greater than the preset rotation angle, the first magnetic region and the second magnetic region are relatively far apart, so that the magnetic attraction force is less than the preset locking value. The foldable frame of claim 1, wherein the second magnetic region is circular. The foldable frame of claim 1, wherein the second magnetic region is fan shaped. The foldable frame body of claim 1, wherein one of the first magnetic region and the second magnetic region is a magnetic member, the first magnetic region and the second magnetic region The other is a magnetic member or a magnetically conductive material. The foldable frame body of claim 1, wherein when the magnetic attraction force is less than the preset locking value, the external force applied to the third bracket drives the second bracket to rotate relative to the first bracket, so that the first The second bracket is relatively far from the first bracket. The foldable frame body of claim 1, wherein the rotating shaft further has a third magnetic region, the third magnetic region is adjacent to the second magnetic region, and the third magnetic region is generated between the third magnetic region and the first magnetic region. a magnetic repulsion, when the second bracket is relatively close to the first bracket and the third bracket and the rotation angle of the third bracket relative to the first bracket is greater than the predetermined rotation angle, the first magnetic region and the third The magnetic zone is relatively close, and the magnetic repulsion is greater than a predetermined bounce value such that the reel is bounced off the first bracket. The foldable frame body of claim 6, wherein the first magnetic region and the third magnetic region are respectively a magnetic member, and the second magnetic region is a magnetic member or a magnetically conductive material. The foldable frame body of claim 1, wherein the first bracket further has a third magnetic region, the third magnetic region is adjacent to the first magnetic region, and the third magnetic region and the second magnetic region are a magnetic repulsion is generated. When the second bracket is relatively close to the first bracket, and the rotation angle of the third bracket and the rotating shaft relative to the first bracket is greater than the predetermined rotation angle, the second magnetic region is The third magnetic zone is relatively close, and the magnetic repulsive force is greater than a predetermined pop-up value, such that the rotating shaft is from the first bracket open. The foldable frame body of claim 8, wherein the second magnetic region and the third magnetic region are respectively a magnetic member, the first magnetic region being a magnetic member or a magnetically permeable material. The foldable frame body of claim 1 is a foldable light stand.