TWI410240B - A single power control device for sitting, ascending, standing - Google Patents

Abstract

This invention relates to an apparatus for controlling sitting, lifting and standing by a single power, comprising a lower seat, a power source, an upper seat and a two-rod set. The lower seat has a front end part and a rear end part. The power source has a fixed end part that is fixed on the lower seat and a driving end part that is capable of generating power during a relative expanding and contracting transformation process relative to the fixed end part. The substantially-crossed two-rod set, which has a first end pivoted to the upper seat and second ends respectively pivoted to the fixed end part and the driving end part of the power source, includes a first rod and a second rod, in which the first rod is pivoted in and slidable along a sliding slot of the second rod by a pivot part. When the driving end part and the fixed end of the power source are controlled to have a relative movement, the first and second rods of the two-rod set can be driven to have a mutual motion via the pivot part and the sliding slot of the second rod, thereby forming a structure capable of controllably switching the upper seat and the lower seat among the sitting, lifting and standing modes. Accordingly, this invention has advantages and efficacies such as of providing a single power source to switch among the sitting, lifting and standing modes and a horizontal-type power source to reduce installation space, diminishing power consumption, and locating center of gravity at a center of the upper seat to have excellent stability.

Description

Single power control seat, lift, station device

The invention relates to a single power control device for sitting, lifting and standing, in particular to a single power source capable of changing the sitting, raising and standing modes, the horizontal power source can reduce the installation space, reduce the power loss and the center of gravity is located on the upper seat. The center is quite stable and has the advantages of a single power control device for sitting, lifting and standing.

Referring to the sixth figure, the conventional variable lifting and standing device comprises: a main frame 71; a seat 72 having at least one portion 721 and a backrest portion 722; and a first telescopic element 73 pivotally connected Between the main frame 71 and the seat portion 721; a second telescopic element 74 is pivotally connected between the main frame 71 and the backrest portion 72.

Thereby, controlling the first and second telescopic elements 73 and 74 to expand and contract, the seat 72 can be controlled to rise and fall, and the angle between the seat portion 721 and the backrest portion 722 can be controlled to generate a support standing. The effect of the person.

Traditional devices create the following problems:

[1] Multiple power sources can change the sitting, raising and standing modes. Conventional devices must have a plurality of telescopic (at least two) devices to control the seat and backrest portions to rise, descend and change to support the standing mode, and the power source is expensive and costly to maintain.

[2] The power source takes up space in the vertical direction. The multiple power sources of the conventional device are designed in a vertical direction, occupying the space in the vertical direction of the overall device, and the overall device must have a certain height.

[3] Multiple power sources consume power. Each power source of a conventional device needs to be powered by a power control, and the number of uses is too much, that is, a large amount of power is lost, and even more, the power is caused by the operation, and the positioning cannot be achieved.

[4] It may be dumped because of the unstable center of gravity. In the conventional device, a plurality of power sources respectively control the position of the seat and the backrest to change between the sitting, raising and standing modes, but when a certain factor (such as insufficient power or a certain power source is destroyed), different modes are caused. Incomplete switching, which may cause the center of gravity to be unstable and dumped, may seriously affect personal safety.

In view of this, it is necessary to develop a device that can solve the above disadvantages.

The object of the present invention is to provide a single power control device for sitting, lifting and standing, which has a single power source to change the sitting, raising and standing modes, and the horizontal power source can reduce the installation space, reduce the power loss and the center of gravity The center of the seat is quite stable. In particular, the problems to be solved by the present invention include: a plurality of power sources can change the sitting, raising and standing modes, the power source is designed to occupy space in a vertical direction, a plurality of power sources consume power, and may be unstable due to a center of gravity And dumping and other issues.

The technical means for solving the above problems is to provide a single power control device for sitting, lifting and standing, comprising: a lower seat having a front end portion and a rear end portion; and a power source comprising: a fixed end portion Fixed to the lower seat; a driving end portion can be extended and relatively contracted relative to the fixed end portion, and generate power during the changing process; a upper seat for carrying a user; a first rod group, The first lower end portion is pivotally connected to the fixed end portion; a first upper end portion is pivotally connected to the upper seat and adjacent to the front end portion; a pivoting portion; a second rod group, The system has: a second lower end portion for pivoting to the driving end portion; a second upper end portion for pivoting to the upper seat and approaching the rear end portion; the first lower end portion and the second portion a first distance between the lower end portions, and the first end distance is respectively lengthened and shortened when the driving end portion is extended and relatively contracted relative to the fixed end portion; between the first upper portion and the second upper end portion Having a second distance; a chute is located at the second lower portion and the second upper end ; The pivot portion for pivoting and sliding therein; whereby, based on the present invention can be switched among the following modes:

[a] riding mode: when the first distance is greater than the second distance, the lower and the upper seats are horizontal, and the upper seat is available for the user to ride;

[b] an ascending mode: when the first distance is substantially equal to the second distance, the upper seat is raised relative to the lower seat by a rising height for raising the user;

[c] Standing mode: When the first distance is smaller than the second distance, an oblique angle is generated between the upper seat and the lower seat for supporting to stand the user.

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:

Referring to the first and second figures, the present invention is a single power control sitting, lifting, standing device, comprising: a lower seat 10 having a front end portion 11 and a rear end portion 12; a power source 20, The utility model comprises: a fixed end portion 21 fixed to the lower seat 10; a driving end portion 22, which can be extended and relatively contracted relative to the fixed end portion 21, and generates power during the changing process; To carry a user 91 (see FIG. 3A); a first rod set 40 having a first lower end portion 41 for pivoting to the fixed end portion 21; a first upper end portion 42, The second rod group 50 has a second lower end portion 51 for pivoting to the driving end portion 22, and a second lower end portion 51 for pivoting to the upper end portion 11; a second upper end portion 52 for pivoting to the upper seat 30 and approaching the rear end portion 12; the first lower end portion 41 and the second lower end portion 51 have a first distance L1 between the two The end portion 22 and the fixed end portion 21 are oppositely extended and relatively contracted, and the first distance L1 is respectively lengthened and shortened (refer to the third B, the fourth B and the fifth B); A second distance L2 is formed between the second upper end portions 42 and 52; a sliding slot 53 is located between the second lower portion and the second upper end 51 and 52; and the pivoting portion 43 is pivotally connected Slide within it; thereby, the invention can be switched between the following modes:

[a] Ride mode: Referring to the third A and B diagrams, when the first distance L1 is greater than the second distance L2, the lower and the upper seats 10 and 30 are horizontal, and the upper seat 30 is available for use. 91 rides;

[b] Raise mode: Referring to the fourth and fourth B diagrams, when the first distance L1 and the second distance L2 are substantially equal, the upper seat 30 is raised relative to the lower seat 10 by a rising height H1, Used to raise the user 91;

[c] Standing mode: Referring to Figures 5A and 5B, when the first distance L1 is smaller than the second distance L2, an inclination angle θ is generated between the upper seat 30 and the lower seat 10 for supporting The user 91 stands.

In practice, the lower seat 10 can be one of a wheelchair frame and an electric wheelchair frame.

The power source 20 can be one of a cooperative structure of a hydraulic cylinder, a pneumatic cylinder, and an electric screw drive nut.

When it is an oil (gas) cylinder (this invention is explained by this embodiment), it has a power cylinder 20A and a telescopic rod 20B. The power cylinder 20A can drive the telescopic rod 20B to be relatively extended and relatively contracted. The power cylinder 20A is fixed to the lower seat 10. The fixed end portion 21 is located on the power cylinder 20A, and the driving end portion 22 is located at the telescopic tube. On the rod 20B.

When it is an electric screw drive nut (known structure, the drawing is not shown, together with Chen Ming.). An electric motor drive screw can be provided to drive the nut for linear movement and to fix the electric motor to the lower seat 10. The fixed end portion 21 is located on the electric motor, and the driving end portion 22 is located on the nut.

The upper seat 30 can be one of a wheelchair cushion and an electric wheelchair cushion.

The upper seat 30 has a four-bar linkage structure and has a front lower pivot joint 31, a front upper pivot joint 32, a rear lower pivot joint 33 and a rear upper pivot joint 34; the front lower and the front front The upper pivot joints 31 and 32 are pivotally connected to a pedal portion 30A; the rear lower and the rear upper pivot joints 33 and 34 are pivotally connected to a chair back 30B.

The present invention can control the upper seat 30 to change between the following positions:

[a] seating position P1: referring to the third A and third B diagrams, controlling the driving end portion 22 to extend relative to the fixed end portion 21; between the first lower end portion 41 and the second lower end portion 51 The first distance L1 is greater than the second distance L2 between the first upper end portion 42 and the second upper end portion 52. At this time, the lower seat 10 and the upper seat 30 are horizontally horizontal, and the upper seat 30 is located at a level The ride position P1 is available for the user 91 to ride on the pedal portion 31 for the user 91 to step on (when stepping backwards slightly, interlocking the four-bar linkage structure, driving the front upper and rear upper pivot joints 32 and 34 toward Moving forward, and driving the front lower and rear lower pivot joints 31 and 33 to move backward; the upper seat 30 is slightly higher in front and lower, which prevents the user 91 from sliding forward.), the back 32 of the chair is used The person 91 lies.

[b] raising position P2: referring to the fourth A and fourth B diagrams, controlling the driving end portion 22 to contract relative to the fixed end portion 21; the first lower end portion 41 and the second lower end portion 51 are opposite each other The first distance L1 and the second distance L2 are substantially equal; the first and second upper end portions 42 and 52 are pivotally connected to the upper seat 30 and cannot be displaced, thereby pushing the pivoting portion 43 to The sliding groove 53 is displaced from the direction of the rear end portion 12 toward the front end portion 11 (about sliding to the intermediate position of the sliding groove 53. At this time, the first and second upper end portions 42 and 52 are generally Level). Further, the upper seat 30 is raised from the seating position P1 to the raised position P2 (the upper seat 30 and the lower seat 10 are separated from the rising height H1), and the effect of raising the user 91 is synchronized.

[C] Standing position P3: Referring to FIGS. 5A and 5B, the driving end portion 22 and the fixed end portion 21 are controlled to continuously contract relative; the first lower end portion 41 and the second lower end portion 51 are continuously opposed to each other. The pivoting portion 43 continues to be displaced from the intermediate position of the sliding groove 53 (the second upper end portion 52 is gradually higher than the first upper end portion 42) toward the front end portion 11 (finally sliding to the end, the The second upper end portion 52 is higher than the first upper end portion 42 by an inclined height H2). Finally, the upper seat 30 and the lower seat 10 are inclined at an angle θ, and the user 91 can be regarded as being supported by the upper seat 30 (supporting the buttocks). Of course, the stability of the standing can be improved by the back 30B of the chair.

As long as the driving end 22 is oppositely controlled to extend relative to the fixed end portion 21, the above three actions can be reversed.

The advantages and effects of the present invention can be summarized as follows:

[1] A single power source can change the sitting, raising and standing modes. The invention combines the linkage of the two poles by a single power source, and achieves three modes of controlling the seat to change sitting, ascending and standing. The single power source installation cost is relatively low, and the two-bar group is a pure mechanical linkage structure, and almost no maintenance is required. The overall cost has been significantly reduced.

[2] Horizontal power source reduces installation space. The power source of the invention is horizontal and can be arranged along the length of the vehicle body, does not occupy vertical space, increases the installation space of the additional parts of the device, or can reduce the volume of the device. Therefore, the horizontal power source can reduce the installation space.

[3] Reduce power loss. The invention is a single power source, which can reduce power loss and increase the number of operation and use. As for the two-bar group, it is a pure mechanical structure, and no power is needed at all. Therefore, power loss can be reduced.

[4] The center of gravity is fairly stable in the center of the upper seat. The invention drives a two-bar group to switch between modes by a single power source, and the key point is that the two bars can control the center of gravity of the upper seat to be always in the center of the device, so no matter where the action stroke is, whether the power is insufficient and whether the power source is damaged, The user is always supported in the center of the device. Therefore, the center of gravity is quite stable in the center of the upper seat.

In the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the foregoing objects and is in accordance with the provisions of the Patent Law.

10. . . Lower seat

11. . . Front end

12. . . Back end

20. . . Power source

20A. . . Power cylinder

20B. . . Telescopic rod

twenty one. . . Fixed end

twenty two. . . Drive the end

30. . . Sitting

31. . . Front lower pivot joint

32. . . Front upper pivot joint

33. . . Rear lower pivot joint

34. . . Rear upper joint

30A. . . Foot part

30B. . . Chair back

40. . . First rod group

41. . . First lower end

42. . . First upper end

43. . . Pivot

50. . . Second pole

51. . . Second lower end

52. . . Second upper end

53. . . Chute

71. . . Main Frame

72. . . Seat

721. . . Seat

722. . . Backrest

73. . . First telescopic element

74. . . Second telescopic element

91. . . user

L1. . . First distance

L2. . . Second distance

H1. . . Rising height

H2. . . Tilt height

θ. . . slope

P1. . . Ride location

P2. . . Rising position

P3. . . Standing position

The first figure is a schematic diagram of the decomposition of the present invention

The second figure is a schematic view of the present invention

The third A diagram is a schematic diagram of the invention applied to the ride

The third B diagram is an enlarged schematic view of a part of the structure of the third A diagram

The fourth A diagram is a schematic diagram of the invention applied to the rise

The fourth B diagram is an enlarged schematic view of a part of the structure of the fourth A diagram

Figure 5A is a schematic view of the present invention applied to standing support

Figure 5 is an enlarged view of a part of the structure of Figure 5A

The sixth picture is a schematic diagram of a conventional device

10. . . Lower seat

11. . . Front end

12. . . Back end

twenty two. . . Drive the end

30. . . Sitting

31. . . Front lower pivot joint

32. . . Front upper pivot joint

33. . . Rear lower pivot joint

34. . . Rear upper joint

30A. . . Foot part

30B. . . Chair back

40. . . First rod group

41. . . First lower end

42. . . First upper end

43. . . Pivot

50. . . Second pole

51. . . Second lower end

53. . . Chute

P1. . . Ride location

Claims (8)

The utility model relates to a single power control device for sitting, lifting and standing, comprising: a lower seat having a front end portion and a rear end portion; a power source comprising: a fixed end portion fixed to the lower seat; The end portion is extendable and relatively contracted relative to the fixed end portion and generates power during the changing process; a top seat for carrying a user; and a first rod set having: a first lower end portion a second upper end portion for pivoting to the upper seat and adjacent to the front end portion; a pivoting portion; a second rod group having a second lower end portion The second upper end portion is pivotally connected to the upper seat and is adjacent to the rear end portion; the first lower end portion and the second lower end portion have a first a distance, when the driving end portion is oppositely extended and relatively contracted, the first distance is respectively lengthened and shortened; the first upper portion and the second upper end portion have a second distance; a slot is located between the second lower portion and the second upper end; the pivoting portion is pivotally connected and slides therein Thereby, the present invention can be switched between the following modes: [a] riding mode: when the first distance is greater than the second distance, the lower and the upper seats are horizontal, and the upper seat is available for the user to ride. [b] raising mode: when the first distance is equal to the second distance, the upper seat is raised relative to the lower seat by a rising height for raising the user; [c] standing mode: When the first distance is less than the second distance, an oblique angle is generated between the upper seat and the lower seat for supporting to stand the user. The single power control seat, lift, and station device as described in claim 1, wherein the lower seat is one of a wheelchair frame and an electric wheelchair frame. The single power control seat, lift, and station device as described in claim 1, wherein the power source is one of a hydraulic cylinder, a pneumatic cylinder, and an electric screw drive nut. The device of claim 3, wherein the hydraulic cylinder has a power cylinder and a telescopic rod, and the power cylinder can drive the telescopic rod and its relative extension The power cylinder is fixed to the lower seat, and the fixed end is located on the power cylinder, and the driving end is located on the telescopic rod. The device of claim 3, wherein the pneumatic cylinder has a power cylinder and a telescopic rod, and the power cylinder can drive the telescopic rod to extend relative to it. Shrinking, the power cylinder is fixed to the lower seat, and the fixed end is located on the power cylinder, and the driving end is located on the telescopic rod. For example, the single power control seat, lift, and station device described in claim 3, wherein the electric screw drive nut is configured to be equipped with an electric motor drive screw and a screw drive nut for linear motion; A motor is fixed to the lower seat, and the fixed end is located on the electric motor, and the driving end is located on the nut. A device for controlling a seat, a lift, or a station according to the first aspect of the patent application, wherein the upper seat is one of a wheelchair seat cushion and an electric wheelchair seat cushion. The device of claim 1, wherein the upper seat has a four-link structure and has a front lower pivot joint, a front upper pivot joint, and a rear. a lower pivot joint and a rear upper pivot joint; the front lower and the front upper pivot joint pivotally connect a pedal portion; the rear lower and the rear upper pivot joint collectively pivot a chair back.