Patent Publication Number: US-11044999-B2

Title: Swing chair

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the priority benefit of Taiwan application serial no. 107146725, filed on Dec. 24, 2018. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification. 
     BACKGROUND 
     Technical Field 
     The disclosure relates to a chair, and more particularly to a swing chair. 
     Description of Related Art 
     Due to changes in work styles and recreational activities, modern people spend a significant amount of time seating on chairs to handle office work, personal affairs, or play video games. In general, most conventional office chairs, computer chairs, or e-sports chairs have freedom of movement for rotation perpendicular to the ground, while some other office chairs, computer chairs, or e-sports chairs can withstand force to be leaned backward. However, to produce all of these movements, force has to be applied through the seater or others to the office chair, the computer chair, or the e-sports chair. 
     SUMMARY 
     The disclosure provides a swing chair, which can automatically rotate around two different axes. 
     The swing chair of the disclosure includes a base, a seat, and a driving frame. The seat is disposed above the base. The driving frame is disposed between the base and the seat. The driving frame includes a first fixing base, a first shaft, a second fixing base, a second shaft, a first driving assembly, and a second driving assembly. The first fixing base is fixed to the base. The first shaft is rotatably connected to the first fixing base. The second fixing base is fixed to the seat. The second shaft is connected to the first shaft and the second fixing base is rotatably connected to the second shaft. The first driving assembly is configured to drive the first shaft to rotate with respect to the first fixing base. The second driving assembly is configured to drive the second fixing base to rotate with respect to the second shaft. 
     Based on the above, the swing chair of the disclosure can automatically rotate around two different axes to provide the seater with a better seating experience. 
     To make the aforementioned and other features of the disclosure more comprehensible, several embodiments accompanied with drawings are described in detail as follows. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of a swing chair according to an embodiment of the disclosure. 
         FIG. 2  is a schematic view of a side view of the swing chair of  FIG. 1 . 
         FIG. 3  is a schematic view of a swing chair according to another embodiment of the disclosure. 
     
    
    
     DETAILED DESCRIPTION OF DISCLOSED EMBODIMENTS 
       FIG. 1  is a schematic view of a swing chair according to an embodiment of the disclosure.  FIG. 2  is a schematic view of a side view of the swing chair of  FIG. 1 . Referring to  FIG. 1  and  FIG. 2 , in the embodiment, a swing chair  100  is applicable for e-sports or virtual reality games to provide the player with a better seating experience and an immersive interactive experience. For example, the swing chair  100  may interact with the game console to cooperate with the game scenarios to produce movements such as leaning forward and backward or slanting leftward and rightward, thereby enabling the player sitting on the swing chair  100  to be immersed in the game. 
     Furthermore, the swing chair  100  includes a base  110 , a seat  120 , and a driving frame  130 , wherein the driving frame  130  is disposed between the base  110  and the seat  120 , and the seat  120  is supported by the driving frame  130  to be disposed above the base  110 . The base  110  may be fixed to the ground, slide with respect to the ground or rotate around the axial direction perpendicular to the ground. The driving frame  130  is configured to drive the seat  120  to lean forward and backward or slant leftward and rightward with respect to the base  110 . 
     In the embodiment, the driving frame  130  includes a first fixing base  131 , a first shaft  132 , a second fixing base  133 , a second shaft  134 , a first driving assembly  135 , and a second driving assembly  136 , wherein the first driving assembly  135  is configured to provide power to drive the seat  120  to slant leftward and rightward with respect to the base  110 , and the second driving assembly  136  is configured to provide power to drive the seat  120  to lean forward and backward with respect to the base  110 . On the other hand, the number of the first fixing base  131  may be two and the first fixing bases  131  are fixed to the two opposite sides of the base  110 . The two opposite ends of the first shaft  132  are rotatably connected to the two first fixing bases  131  respectively. Accordingly, the number of the second fixing base  133  may be two and the second fixing bases  133  are fixed to the two opposite sides of the seat  120 . The two opposite ends of the second shaft  134  are respectively connected to the two second fixing bases  133  and the two second fixing bases  133  can rotate with respect to the second shaft  134 . In other words, the first shaft  132  serves as the rotational reference for the seat  120  to slant leftward and rightward with respect to the base  110 , and the second shaft  134  serves as the rotational reference for the seat  120  to lean forward and backward with respect to the base  110 . 
     From the above, the second shaft  134  is connected to the first shaft  132  and may be an integrally formed cross-shaped structure. On the other hand, the first driving assembly  135  is configured to drive the first shaft  132  to rotate with respect to the two first fixing bases  131  and the second driving assembly  136  is configured to drive the two second fixing bases  133  to rotate with respect to the second shaft  134 . During the rotation of the first shaft  132  with respect to the two first fixing bases  131 , the two second fixing bases  133 , the second shaft  134 , and the second driving assembly  136  rotate with the first shaft  132  around a first axial direction A 1  to drive the seat  120  to slant leftward and rightward with respect to the base  110 . In contrast, during the rotation of the two second fixing bases  133  with respect to the second shaft  134 , the seat  120  rotates with the two second fixing bases  133  around a second axial direction A 2  to drive the seat  120  to lean forward and backward with respect to the base  110 . Furthermore, the first axial direction A 1  and the second axial direction A 2  are perpendicular to each other, wherein the first axial direction A 1  is parallel to the first shaft  132  and the second shaft  134  is parallel to the second axial direction A 2 . 
     In the embodiment, the first driving assembly  135  includes a first motor  135   a , a first driven member  135   b , a first bearing  135   c , and a first linking member  135   d , wherein the number of the first bearing  135   c  may be two and the number of the first driven member  135   b  may be two. The two first bearings  135   c  are respectively fixed to the two first fixing bases  131  and the two first driven members  135   b  are respectively fixed to the two first bearings  135   c . For example, each of the first bearings  135   c  is fixed to the corresponding first fixing base  131  with an outer ring, wherein each of the first driven members  135   b  is fixed to the outer ring of the corresponding first bearing  135   c  and the two opposite ends of the first shaft  132  respectively passes through the two first driven members  135   b  to connect to inner rings of the two first bearings  135   c . In other words, each of the first driven members  135   b  cannot rotate with respect to the corresponding first fixing base  131 , but the first shaft  132  can rotate with respect to the two first fixing bases  131  through the two first bearings  135   c . From the above, the first driven member  135   b  is a pulley and the first linking member  135   d  is a belt. The first linking member  135   d  is coupled to one of the two first driven members  135   b  and a power output shaft  135   e  of the first motor  135   a . Since the first motor  135   a  of the embodiment is fixed to the first shaft  132  and each of the first driven members  135   b  cannot rotate with respect to the corresponding first fixing base  131 , the power output shaft  135   e  cannot drive the first linking member  135   d  during the operation of the first motor  135   a , thereby causing the first motor  135   a  to produce self-rotation to drive the first shaft  132  to rotate with respect to the two first fixing bases  131  through the two first bearings  135   c.    
     On the other hand, the second driving assembly  136  includes a second motor  136   a , a second driven member  136   b , a second bearing  136   c , and a second linking member  136   d , wherein the number of the second driven member  136   b  may be two and the number of the second bearing  136   c  may be two. The two second driven members  136   b  are respectively fixed to the two second fixing bases  133  and the two second bearings  136   c  are respectively fixed to the two second driven members  136   b . For example, each of the second bearings  136   c  is fixed to the corresponding second driven member  136   b  with an outer ring and the two opposite ends of the second shaft  134  are respectively connected to inner rings of the two second bearings  136   c . In other words, the two second driven members  136   b  are respectively connected to the second shaft  134  through the two second bearings  136   c  and each of the second fixing bases  133  and the corresponding second driven member  136   b  can rotate with respect to the second shaft  134  through the corresponding second bearing  136   c.    
     From the above, the second driven member  136   b  is a pulley and the second linking member  136   d  is a belt. The second linking member  136   d  is coupled to one of the two second driven members  136   b  and a power output shaft  136   e  of the second motor  136   a . During the operation of the second motor  136   a , the power output shaft  136   e  drives the second linking member  136   d  to drive one of the second driven second driven members  136   b  to rotate with respect to the second shaft  134 , thereby causing the two second fixing bases  133  to rotate with the second driven member  136   b  with respect to the second shaft  134 . 
     Continue to refer to  FIG. 1  and  FIG. 2 , in the embodiment, the swing chair  100  further includes a carrier  140  fixed to the first shaft  132 , wherein the first motor  135   a  and the second motor  136   a  are fixed to a surface  141  of the carrier  140  facing the base  110 , the power output shaft  135   e  of the first motor  135   a  and the power output shaft  136   e  of the second motor  136   a  are located on the same plane, and the plane is parallel to the surface  141  of the carrier  140  facing the base  110 . Since the power output shaft  135   e  of the first motor  135   a  and the power output shaft  136   e  of the second motor  136   a  are located on the same plane, the required configuration space between the seat  110  and the base  120  can be greatly reduced. 
       FIG. 3  is a schematic view of a swing chair according to another embodiment of the disclosure. Referring to  FIG. 3 , unlike the above embodiment, a first motor  135   a  of a swing chair  100 A of the present embodiment is fixed to a base  120 . In other words, a power output shaft  135   e  of the first motor  135   a  and a power output shaft  136   e  of the second motor  136   a  are located on different planes. The two first driven members  135   b  are respectively fixed to the two opposite ends of the first shaft  132  and the first shaft  132  is connected to the two first bearings  135   c  through the two first driven members  135   b . For example, each of the first bearings  135   c  is fixed to the corresponding first fixing base  131  with an outer ring, wherein each of the first driven members  135   b  is fixed to an inner ring of the corresponding first bearing  135   c.    
     In other words, the first shaft  132  can rotate with respect to the two first fixing bases  131  through the two first driven members  135   b.    
     During the operation of the first motor  135   a , the power output shaft  135   e  drives the first linking member  135   d  to drive one of the first driven members  135   b  to rotate with respect to the corresponding first fixing base  131 , thereby causing the first shaft  132  to rotate with first driven member  135   b  with respect to the two first fixing bases  131 . 
     Based on the above, the swing chair of the disclosure is applicable for e-sports or virtual reality games to provide the player with a better seating experience and an immersive interactive experience. For example, the swing chair may interact with the game console to cooperate with the game scenarios to automatically rotate around the two different axes or produce movements such as leaning forward and backward or slanting leftward and rightward, thereby enabling the player sitting on the swing chair to be immersed in the game. In addition, the swing chair provides power sources for movements such as leaning forward and backward or slanting leftward and rightward through the two motors respectively, so the movements such as leaning forward and backward or slanting leftward and rightward may be synchronously produced or asynchronously produced. Secondly, since the two power output shafts of the two motors are located on the same plane, the required configuration space between the seat and the base can be greatly reduced. 
     It may be apparent to those skilled in the art that various modifications and variations may be made to the disclosed embodiments without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the disclosure covers modifications and variations provided that they fall within the scope of the following claims and their equivalents.