TWI440451B - Integrated sitting, lying, standing, or electric wheelchair - Google Patents

Description

Integrate electric wheelchairs for sitting, lying, standing, and lifting

The invention relates to an electric wheelchair integrated with sitting, lying, standing and lifting, in particular to an electric wheelchair integrated with a single lifting mechanism for sitting, lying, standing and lifting, which has a single power single degree of freedom driving four movements and actuation The advantages and functions of stability and low cost.

As shown in the seventh figure, it is an indexing type wheelchair that can electrically adjust the seat lifting, rotating, translating and lying functions of the Republic of China Patent No. 563530, which uses two electric cylinders 91 to drive the seat back respectively. 92 and the pedal bracket 93, to achieve structural changes in sitting and lying.

In addition, in the aspect of lifting, a lifting motor 94 is used to drive a transmission gear 95 to rotate. The transmission gear 95 drives the lifting gear 97 to rotate via a transmission gear chain 96, thereby driving the lifting rod 98 to move relative to the fixed column 981. A skeleton 99 is moved up and down with respect to a wheelchair outer frame 90A to obtain a lifting function of the wheelchair.

It can be seen that the conventional technology of the indexable wheelchair that can electrically adjust the seat lifting, rotating, translating and lying functions requires two electric cylinders to be driven in the structural change of sitting and lying, and requires a lifting in lifting. The motor 94 is not only complicated in design, but also requires multiple power sources to drive, and the manufacturing cost is relatively high.

Therefore, it is necessary to develop new products to solve the above shortcomings and problems.

The object of the present invention is to provide an electric wheelchair that integrates sitting, lying, standing, and lifting, which has the advantages and functions of single-power single-degree-of-freedom driving, four actions, stable operation, and low cost, so as to solve the problems of the prior art. A source of power and high manufacturing costs.

The technical means for solving the above problems is to provide an integrated electric wheelchair for sitting, lying, standing and lifting, comprising: a movable bed chair portion having a back, a sitting portion and a supporting step portion; a first pivoting portion and a second pivoting portion; the one end of the supporting step has a third pivoting portion and a fourth pivoting portion; the seat portion The two ends are respectively pivotally connected to the first pivoting portion and the third pivoting portion, and the two ends of the linking portion are pivotally connected to the second pivoting portion and the fourth pivoting portion respectively; the sitting portion has a a bottom surface, and having a pair of first sliding portions, wherein the supporting step portion has a second sliding portion; further, the interlocking bed portion has a seat state and an unfolded state; and a base having a bracket a movable wheel set, a lifting mechanism and a base sliding rail; the movable wheel set is disposed on the bracket portion; the lifting mechanism is disposed on the bracket portion and has a lifting pivot end for pivoting Connected to the bottom surface of the seat; the lifting mechanism has at least a lowest position, a middle position and a highest position; an auxiliary frame having an auxiliary sliding portion and an auxiliary sliding rail; the auxiliary sliding portion is slidable Provided on the base rail, the first sliding portion of the seat and the second of the supporting step The movable portion is slidably disposed on the auxiliary sliding rail; the auxiliary sliding rail has an upper arc groove, a straight groove and a lower arc groove; thereby, when the lifting mechanism is located at the lowest position, the first sliding portion Lying in the straight groove, the second sliding portion is located in the lower arc groove, and the interlocking bed portion is in a flat open state; when the lifting mechanism is raised from the lowest position to the middle position, the first a sliding portion and the second sliding portion are both located in the straight groove, and the interlocking bed portion is interlocked into the seat state by the unfolded state; when the lifting mechanism is raised from the middle position to the highest position, the The first sliding portion is located in the upper arc groove, the second sliding portion is located in the straight groove, and the interlocking bed portion is interlocked into an upright unfolded state by the seat state.

The above objects and advantages of the present invention will be readily understood from the following detailed description of the preferred embodiments illustrated herein.

The invention will be described in detail in the following examples in conjunction with the drawings:

As shown in the first, second A, second B and second C diagrams, the present invention is an integrated electric wheelchair that sits, lies, stands, and rises, and includes: a linkage bed portion 10. A base 20 and an auxiliary frame 30.

The interlocking bed portion 10 has a back portion 11, a seat portion 12, a supporting step portion 13 and a linking portion 14; one end of the back portion 11 is provided with a first pivoting portion 111 and a second pivot One end of the support step 11 has a third pivoting portion 131 and a fourth pivoting portion 132; the two ends of the seat portion 12 are pivotally connected to the first pivoting portion 111 and the first The two pivoting portions 131 are respectively pivotally connected to the second pivoting portion 112 and the fourth pivoting portion 132. The seat portion 12 has a bottom surface 121 and has a pair of first sliding portions. The portion 122 has a second sliding portion 133. The interlocking bed portion 10 has a seat state A1 and an unfolded state A2.

The base 20 has a bracket portion 21, a movable wheel set 22, a lifting mechanism 23 and a base rail 24; the movable wheel set 22 is fastened to the bracket portion 21; the lifting mechanism 23 is attached to the bracket The portion 21 has a lifting and lowering end 231 for pivoting to the bottom surface 121 of the seat portion 12; the lifting mechanism 23 has at least a lowest position P1, a middle position P2 and a highest position P3.

The auxiliary frame 30 has an auxiliary sliding portion 31 and an auxiliary sliding rail 32. The auxiliary sliding portion 31 is slidably disposed on the base sliding rail 24, and the first sliding portion 122 of the sitting portion 12 and the supporting portion The second sliding portion 133 of the step portion 13 is slidably disposed on the auxiliary sliding rail 32. The auxiliary sliding rail 32 has an upper arc groove 321, a straight groove 322 and a lower arc groove 323.

Thereby, as shown in the third to fifth B, when the lifting mechanism 23 is located at the lowest position P1, the first sliding portion 122 is located in the straight groove 322, and the second sliding portion 133 is located under the lower sliding portion 133. The arc groove 323, and the interlocking bed portion 10 is in a flat open state A2; when the lifting mechanism 23 is raised from the lowest position P1 to the middle position P2, the first sliding portion 122 and the second sliding portion The portion 133 is located in the straight groove 322, and the interlocking bed portion 10 is interlocked into the seat state A1 by the unfolded state A2; when the lifting mechanism 23 is raised from the middle position P2 to the highest position P3, the The first sliding portion 122 is located in the upper arc groove 321 , and the second sliding portion 133 is located in the straight groove 322 , and the interlocking bed portion 10 is interlocked into the upright deployed state A2 by the seat state A1 .

Regarding the support tread portion 13, it further has a pedal portion 134 for a user to step on.

As shown in FIG. 2C, it is a schematic diagram of the mechanism of the present invention; wherein, when the pair of first sliding portions 122 slide in the straight groove 322, the seat portion 12 can be vertically raised and lowered. The degree of freedom FP = 3 (7-1) - 7 * 2-3 * 1 = 1, that is, the present invention is driven with a single power single degree of freedom.

The detailed operation process of the present invention is as follows. As shown in the third and third B, when the lifting mechanism 23 is located at the lowest position P1, the first sliding portion 122 is located in the straight groove 322. The second sliding portion 133 is located in the lower arc groove 323, the auxiliary frame 30 is located at a first position P11, and the interlocking bed portion 10 is in a flat open state A2; at this time, a user can lie Lying on the bed unit 10 of the bed.

As shown in the fourth and fourth B, when the lifting mechanism 23 is raised from the lowest position P1 to the middle position P2, the first sliding portion 122 and the second sliding portion 133 are raised accordingly, and The auxiliary frame 30 is located at a first position P11, and the interlocking bed portion 10 is interlocked into the seat state A1 by the deployed state A2.

As shown in the fifth and fifth B, when the lifting mechanism 23 is raised from the middle position P2 to the highest position P3, the first sliding portion 122 is slid to the upper arc groove 321, and the second sliding The portion 133 is then raised but still located on the straight slot 322. The auxiliary frame 30 is slid on the base rail 24 from the first position P11 to a second position P12, and the linkage bed portion 10 is The seat state A1 is interlocked into an upright deployed state A2.

As shown in FIG. 6 to FIG. 6C, it is a schematic diagram of the operation of the present invention assisted by the sitting state to the standing; as can be seen from the sixth through sixth embodiments, after a user 70 first rises vertically in a sitting posture, The interlocking bed portion 10 is further interlocked by the seat state A1 into an upright deployed state A2 to assist the user 70 to stand; that is, the present invention is in addition to the third, fifth, and fifth views of the lying, sitting, standing In addition to the three actions, in the process of sitting to the station, there is also a range of simple lifting; therefore, the present invention includes four actions of lying, sitting, ascending, standing, and the like.

As can be seen from the above description, the lifting mechanism 23 can raise and lower the heights, and the seat portion 12 can be lifted and lowered, and the pair of first sliding portions 122 and the second sliding portion 133 can be slid on the auxiliary sliding rail 32. Further, the interlocking bed portion 10 is interlocked to change the state.

In the design of the lifting mechanism 23, it can be an electric cylinder, which is driven by a linear expansion and contraction to drive the lifting and lowering of the bed portion 10; due to the linear action, the electric cylinder has a small force, which can effectively reduce the electric power. In addition, since the lifting mechanism 23 is linearly raised and lowered and connected to the seat portion 12, the center of gravity is located between the movable wheel sets 22 in three variations.

In summary, the advantages and effects of the present invention can be summarized as follows:

[1] Single-power single-degree-of-freedom drives four actions. In the conventional technology, the indexable wheelchair that can electrically adjust the seat lift, rotation, translation and lying functions is operated. The structural change of sitting and lying requires two electric cylinders to drive, and a lifting motor is needed for lifting. 94; The present invention is designed with a single degree of freedom, and only four movements such as lying, sitting, lifting, and standing can be completed by the lifting mechanism 23, so that the single-power single degree of freedom drives four movements.

[2] The action is stable. The lifting mechanism 23 of the present invention is linearly raised and lowered and connected to the seat portion 12. Therefore, in the four variations, the center of gravity is located between the movable wheel sets 22, so that the movement is stabilized.

[3] The cost is lower. The indexing type of wheelchair which can electrically adjust the seat lift, rotation, translation and lying function of the seat, requires two electric cylinders to be driven in the structural change of sitting and lying, and requires a lifting motor 94 in lifting and lowering, not only The design is relatively complicated, and requires multiple power sources to drive, and the manufacturing cost is relatively high. However, the single lifting mechanism 23 can complete the actions of lying, sitting, lifting, standing, etc., and the manufacturing cost is relatively low.

The present invention has been described in detail with reference to the preferred embodiments of the present invention, without departing from the spirit and scope of the invention.

From the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the foregoing objects, and the invention has been in accordance with the provisions of the patent law.

10‧‧‧ linkage bed chair

11‧‧‧ Back

111‧‧‧First pivotal

112‧‧‧Second pivotal

12‧‧‧ seat

121‧‧‧ bottom

122‧‧‧First sliding part

13‧‧‧Support step

131‧‧‧ Third pivotal

132‧‧‧fourth pivotal

133‧‧‧Second sliding part

134‧‧‧ pedal department

14‧‧‧ linkage department

20‧‧‧Base

21‧‧‧ bracket

22‧‧‧Active Wheels

23‧‧‧ Lifting mechanism

231‧‧‧ Lifting pivot end

24‧‧‧Base slide

30‧‧‧Auxiliary frame

31‧‧‧Auxiliary sliding part

32‧‧‧Auxiliary slide rails

321‧‧‧Upper arc slot

322‧‧‧ straight slot

323‧‧‧ lower arc slot

70‧‧‧Users

A1‧‧‧Seat status

A2‧‧‧Expanded status

P1‧‧‧ lowest position

P2‧‧‧ mid-section

P3‧‧‧ highest position

P11‧‧‧ first position

P12‧‧‧ second position

91‧‧‧Electric cylinder

92‧‧‧Back of the chair

93‧‧‧foot pedal bracket

94‧‧‧ Lift motor

95‧‧‧Transmission gear

96‧‧‧Transmission gear chain

97‧‧‧lifting gear

98‧‧‧ Lifting rod

981‧‧‧ fixed column

99‧‧‧ skeleton

90A‧‧‧ Wheelchair frame

The first figure is an exploded view of the integrated electric wheelchair for sitting, lying, standing and lifting of the present invention.

The second A is a schematic diagram of the integrated electric wheelchair for sitting, lying, standing and ascending in the present invention.

2B is a side view of the integrated electric wheelchair of the present invention for sitting, lying, standing, and lifting

The second C diagram is a simple schematic diagram of the integrated electric wheelchair for sitting, lying, standing and ascending in the present invention.

The third A diagram is a schematic diagram of the actuation process of the present invention.

The third B diagram is a side view of the actuation process of the present invention.

Figure 4A is a schematic diagram of the second process of the present invention

Figure 4B is a side view of the second process of the present invention

The fifth A diagram is a schematic diagram of the actuation process of the present invention

Figure 5B is a side view of the actuation process of the present invention

Figure 6A is a schematic diagram of the auxiliary standing movement process of the present invention

Figure 6B is a schematic diagram of the second standing process of the present invention

The sixth C diagram is a schematic diagram of the auxiliary standing movement process of the present invention

The seventh figure is a schematic diagram of an electric wheelchair of the prior art.

10‧‧‧ linkage bed chair

11‧‧‧ Back

111‧‧‧First pivotal

112‧‧‧Second pivotal

12‧‧‧ seat

122‧‧‧First sliding part

13‧‧‧Support step

133‧‧‧Second sliding part

134‧‧‧ pedal department

14‧‧‧ linkage department

20‧‧‧Base

21‧‧‧ bracket

22‧‧‧Active Wheels

24‧‧‧Base slide

30‧‧‧Auxiliary frame

31‧‧‧Auxiliary sliding part

321‧‧‧Upper arc slot

322‧‧‧ straight slot

323‧‧‧ lower arc slot

A1‧‧‧Seat status

P11‧‧‧ first position

Claims (3)

An electric wheelchair for lying, standing, and ascending, comprising: a movable bed chair portion having a back, a sitting portion, a supporting step portion and a linking portion; and a first pivoting portion is disposed at one end of the back portion a second pivoting portion; the one end of the supporting step has a third pivoting portion and a fourth pivoting portion; the two ends of the sitting portion are respectively pivotally connected to the first pivoting portion and the third pivoting portion a connecting portion, the two ends of the linking portion are respectively pivotally connected to the second pivoting portion and the fourth pivoting portion; the sitting portion has a bottom surface and has a pair of first sliding portions, and the supporting step portion is The utility model has a second sliding portion; further, the interlocking bed chair portion has a seat state and an unfolded state; and a base has a bracket portion, a movable wheel set, a lifting mechanism and a base sliding rail; The lifting mechanism is disposed on the bracket portion; the lifting mechanism is disposed on the bracket portion and has a lifting pivoting end for pivoting to the bottom surface of the seat portion; the lifting mechanism has at least a lowest position a middle position and a highest position; an auxiliary frame having an auxiliary sliding portion and an auxiliary sliding portion The auxiliary sliding portion is slidably disposed on the base rail, and the first sliding portion of the seat portion and the second sliding portion of the supporting step portion are slidably disposed on the auxiliary sliding rail; The rail system has an upper arc groove, a straight groove and a lower arc groove; thereby, when the lifting mechanism is located at the lowest position, the first sliding portion is located in the straight groove, and the second sliding portion is located in the lower arc groove, And the interlocking bed portion is in a flat state; when the lifting mechanism is raised from the lowest position to the middle position, the first sliding portion and the second sliding portion are located in the straight slot, and the linkage The bed portion is interlocked into the seat state by the unfolded state; when the lifting mechanism is raised from the middle position to the highest position, the first sliding portion is located in the upper arc groove, and the second sliding portion is located The straight groove, and the interlocking bed portion is interlocked into an upright unfolded state by the seat state. The electric wheelchair for integrating sitting, lying, standing, and ascending as described in claim 1, wherein the supporting step further has a pedal portion. The electric wheelchair for integrating sitting, lying, standing, and ascending as described in claim 1, wherein the lifting mechanism is an electric cylinder.