Patent Publication Number: US-11382807-B2

Title: Displacement mechanism for getting disabled person into and out of car

Description:
BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a displacement mechanism, and more particularly to the displacement mechanism which is capable of moving a disabled person to getting into and out of a car. 
     Description of the Prior Art 
     There are many tools (such as a wheelchair) to assist a patient and a disabled person to move, but it is difficult to move the patient and the disabled person to get into and out of the car. To solve such a problem, a caregiver (such as a female caregiver) has to move the patient and the disabled person physically. Furthermore, the disabled person will be hurt during being moved. 
     To improve such a defect, a conventional displacement mechanism has been developed, but it is complicated, produced at a high cost, sold at a high price, and is operated arduously. 
     The present invention has arisen to mitigate and/or obviate the afore-described disadvantages. 
     SUMMARY OF THE INVENTION 
     The primary object of the present invention is to provide a displacement mechanism which is simplified, produced at a low cost, sold at a low price, and used flexibly. 
     Another object of the present invention is to provide a displacement mechanism which is capable of moving the disabled person upward and downward easily and quickly. 
     To obtain above-mentioned aspect, a displacement mechanism provided by the present invention contains: a support rack, a sitting assembly, a slide rod, two fixing feet, a back, a first holding plate, a second holding plate, and an expandable sheet. 
     The support rack includes a fixer formed on a top of the support rack, a rolling stand connected on a bottom of the support rack. The rolling stand has multiple first rollers mounted on a bottom of the rolling stand, and the support rack further includes a lifter defined between the fixer and the rolling stand. The fixer has a post extending upward from a side thereof. 
     The sitting assembly is slidably mounted on the fixer of the support rack, the sitting assembly includes a receiving orifice defined on one of two side surfaces of the sitting assembly, and the sitting assembly includes a rotatable mounting rotatably connected on a front end of the sitting assembly. 
     The slide rod includes an elongated hole defined on the slide rod and configured to connect the slide rod with the post of support rack, such that the slide rod slides with respect to the post and is slidably received in the receiving orifice of the sitting assembly. 
     The two fixing feet is mounted on two bottoms of two side surfaces of the rotatable mounting, and a respective foot includes a second roller connected on a bottom of the respective foot. 
     The back is disposed on a rear end of the sitting assembly. 
     The first holding plate is mounted on a seat of a wheelchair, and the sitting assembly is slid between the fixer of the support rack and the first holding plate. 
     The second holding plate is connected on a seat of a car. 
     The expandable sheet is disposed between the fixer of the support rack and the second holding plate so that the sitting assembly slides between the fixer of the support rack and the second holding plate. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing the exploded components of a displacement mechanism according to a preferred embodiment of the present invention. 
         FIG. 2  is a perspective view showing the exploded components of a part of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 3  is a side plan view showing the operation of a sitting assembly of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 4  is a perspective view showing the operation of a first holding plate of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 5  is a perspective view showing the operation of the sitting assembly of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 6  is a perspective view showing the assembly of the sitting assembly and the first holding plate of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 7  is a side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 8  is another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 9  is also another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 10  is still another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 11  is another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 12  is also another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 13  is still another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 14  is another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 15  is also another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 16  is still another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
         FIG. 17  is another side plane view showing the operation of the displacement mechanism according to the preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, a preferred embodiment in accordance with the present invention. 
     With reference to  FIGS. 1-3 , a displacement mechanism for getting a disabled person into and out of a car according to a preferred embodiment of the present invention comprises: a support rack  10 , a sitting assembly  20 , a slide rod  30 , two fixing feet  40 , a back  50 , a first holding plate  60 , a second holding plate  70 , and an expandable sheet  80 . 
     The support rack  10  includes a fixer  11  formed on a top thereof, and the support rack  10  includes a rolling stand  12  connected on a bottom of the support rack  10 , wherein the rolling stand  12  has multiple first rollers  121  mounted on a bottom thereof and configured to move the support rack  10  slidably. The support rack  10  further includes a lifter  13  defined between the fixer  11  and the rolling stand  12  and configured to adjust a height of the fixer  11 , wherein the fixer  11  has a post  111  extending upward from a side thereof, a screw nut  112  screwed on the post  111 , and multiple cutouts  113  formed on two sides of a top of the fixer  11 . 
     The sitting assembly  20  includes two first slide rails  21  arranged on two sides of a bottom thereof and configured to fix the sitting assembly  20  on the fixer  11  of the support rack  10 , the two first slide rails  21  are engaged with the multiple cutouts  113  of the fixer  11  of the support rack  10 , and the sitting assembly  20  further includes multiple rotation elements  22  disposed between the two first slide rails  21  of the bottom of the sitting assembly  20 , a receiving orifice  23  defined on one of two side surfaces the sitting assembly  20 , a rotatable mounting  24  rotatably connected on a front end of the sitting assembly  20 , and two retainers  25  fixed on the two side surfaces of the sitting assembly  20 . 
     The slide rod  30  includes an elongated hole  31  defined thereon and configured to screw the slide rod  30  with the post  111 , such that the slide rod  30  slides with respect to the post  111  and is slidably received in the receiving orifice  23  of the sitting assembly  20 . 
     The two fixing feet  40  are mounted on two bottoms of two side surfaces of the rotatable mounting  24 , and a respective fixing foot  40  includes a second roller  41  connected on a bottom thereof. 
     The back  50  is detachably disposed on a rear end of the sitting assembly  20 . 
     The first holding plate  60  is mounted on a seat A 1  of a wheelchair (as shown in  FIGS. 4 and 5 ), the first holding plate  60  includes two second slide rails  61  formed on two sides of a top thereof, and the first holding plate  60  includes two hooks  62  formed on two side surfaces thereof, such that the sitting assembly  20  slides between the fixer  11  of the support rack  10  and the first holding plate  60  by way of the first slide rails  21  of the sitting assembly  20  and the second slide rails  61  of the first holding plate  60 . 
     The second holding plate  70  is connected on a seat B 1  of the car (as illustrated in  FIGS. 9, 11, and 13 ), the second holding plate  70  includes a groove  71  defined on a top thereof, and the groove  71  has an opening  711  formed on a side thereof. 
     The expandable sheet  80  is disposed between the fixer  11  of the support rack  10  and the second holding plate  70  so that the sitting assembly  20  slides between the fixer  11  of the support rack  10  and the second holding plate  70  by using the multiple rotation elements  22 . 
     In operation, the first holding plate  60  is connected on the seat A 1  of the wheelchair (as shown in  FIGS. 4 and 5 ), and the second holding plate  70  is fixed on the seat B 1  of the car (as illustrated in  FIGS. 9, 11, and 13 ), wherein the sitting assembly  20  is slidably mounted on the two second slide rails  61  of the first holding plate  60  by way of the two first slide rails  21 , and the two retainers  25  of the sitting assembly  20  are engaged with the two hooks  62  of the first holding plate  60  (as illustrated in  FIG. 6 ) so that the sitting assembly  20  is secured on the first holding plate  60  (i.e. the seat A 1  of the wheelchair), and a disabled person sits on the sitting assembly  20  and moves with the wheelchair. 
     When moving the disabled person to the seat B 1  of the car, as shown in  FIGS. 7 and 8 , the rotatable mounting  24  of the sitting assembly  20  is adjustably moved upward, the two fixing feet  40  are mounted on the two bottoms of the two side surfaces of the rotatable mounting  24  so that the two second rollers  41  of the two fixing feet  40  abut against a ground slidably, the sitting assembly  20  moves the disabled person to the first holding plate  60  by sliding the two first slide rails  21  and the two second slide rails  61  of the first holding plate  60 , and the support rack  10  slides beneath the sitting assembly  20 , then the lifter  13  of the support rack  10  lifts the fixer  11  upward so that the two first slide rails  21  of the sitting assembly  20  are fixed on the fixer  11  of the support rack  10 , the two first slide rails  21  are engaged with the multiple cutouts  113  of the fixer  11  of the support rack  10 , and the slide rod  30  is slidably accommodated in the receiving orifice  23  of the sitting assembly  20  so that the sitting assembly  20  is connected on the support rack  10  and is slidably moved beside the seat B 1  of the car by using the multiple first rollers  121  of the support rack  10  and the two second rollers  41  of the two fixing feet  40 , and the expandable sheet  80  is fixed between the fixer  11  of the support rack  10  and the second holding plate  70  (as shown in  FIG. 9 ), the two fixing feet  40  are removed from the two bottoms of the two side surfaces of the rotatable mounting  24 , the slide rod  30  is slid away from the second holding plate  70 , and the rotatable mounting  24  of the sitting assembly  20  is rotated upward so that the two feet of the disabled person are lifted by the rotatable mounting  24  (as shown in  FIG. 10 ). Then, the lifter  13  of the support rack  10  lifts the fixer  11  upward higher than the second holding plate  70  so that the disabled person on the sitting assembly  20  is moved to the second holding plate  70  slidably (as illustrated in  FIG. 11 ). After the sitting assembly  20  and the disabled person are moved onto the second holding plate  70  (the seat B 1  of the car), the sitting assembly  20  and the second holding plate  70  are fixed, and the rotatable mounting  24  of the sitting assembly  20  is rotated downward so that the two feet of the disabled person are put downward (as shown in  FIGS. 12 and 13 ), thus moving the disabled person to the seat B 1  of the car completely. 
     When moving the disabled person to the seat A 1  of the wheelchair, as shown in  FIG. 14 , the rotatable mounting  24  of the sitting assembly  20  is rotated upward to lift the two feet of the disabled person, the support rack  10  is moved slidably beside the seat B 1  of the car, the expandable sheet  80  is fixed between the fixer  11  of the support rack  10  and the second holding plate  70  (as shown in  FIG. 15 ), the lifter  13  of the support rack  10  descends the fixer  11  downward lower than the second holding plate  70  so that the disabled person on the sitting assembly  20  is moved to the fixer  11  slidably by sliding the slide rod  30  in the receiving orifice  23  of the sitting assembly  20  until the sitting assembly  20  and the disabled person are moved onto the fixer  11  of the support rack  10 . Thereafter, the two first slide rails  21  of the sitting assembly  20  are engaged with the multiple cutouts  113  of the fixer  11  of the support rack  10 , the rotatable mounting  24  of the sitting assembly  20  is rotated downward so that the two feet of the disabled person are put downward (as shown in  FIG. 16 ), wherein the two fixing feet  40  are connected on the two bottoms of the two side surfaces of the rotatable mounting  24  so that the two second rollers  41  of the two fixing feet  40  abut against the ground slidably, and the support rack  10  and the two fixing feet  40  are slid to abut against a front end of the seat A 1  by way of the multiple first rollers  121  and the two second rollers  41 , then the sitting assembly  20  and the disabled person are moved onto the first holding plate  60  of the seat A 1  of the wheelchair slidably, such that the two first slide rails  21  of the sitting assembly  20  contact with the two second slide rails  61  of the first holding plate  60  (as illustrated in  FIG. 17 ) partially, the support rack  10  are removed from the bottom of the sitting assembly  20  slidably, the sitting assembly  20  and the first holding plate  60  are slid by using the two first slide rails  21  and the two second slide rails  61  so that the sitting assembly  20  and the disabled person are moved onto the first holding plate  60  slidably, then the two retains  25  of the sitting assembly  20  are engaged with the two hooks  62  of the first holding plate  60  so that the sitting assembly  20  is connected on the first holding plate  60  (i.e., the seat A 1  of the wheelchair), and the two fixing feet  40  are removed from the two bottoms of the rotatable mounting  24 , thus moving the disabled person to the seat A 1  of the wheelchair. 
     Accordingly, the displacement mechanism has advantages as follows: 
     1. The displacement mechanism is simplified, produced at a low cost, sold at a low price, and used flexibly. 
     2. The displacement mechanism is capable of moving the disabled person upward and downward easily and quickly. 
     While various embodiments in accordance with the present invention have been shown and described, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.