An adjustable backrest mechanism for a lift-up seat cabinet

Abstract

The present invention discloses a movable backrest mechanism for a liftable toilet cabinet, which includes a toilet seat that can be movably changed in height on the toilet cabinet. The toilet seat is divided into a low-position use state and a high-position sitting-up state according to its height. A backrest member that can be movably tilted is provided on the toilet seat, and the backrest member corresponds to the human back. In the low-position use state, the backrest member is flattened on the toilet seat; in the high-position sitting-up state, the backrest member tilts relative to the toilet seat to form a human backrest structure. During the process of switching between the low-position use state and the high-position sitting-up state of the toilet seat, the backrest member gradually tilts or gradually flattens, so that the center of gravity of the human body close to the backrest member changes correspondingly. The present invention can ensure that the center of gravity of the user is forward during the process of the user sitting down, effectively preventing the situation that the user loses the center of gravity and falls backward due to inertia during the rapid sitting-down process.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary wares, and particularly to a movable backrest mechanism of a lifting toilet cabinet. Background Art

[0002] Most of the toilets sold in the current market are designed for normal people and do not take into account those elderly people with inconvenient mobility. The general height of traditional toilet cabinets is relatively low, so the elderly will find it very strenuous when getting from a semi-squatting position to sitting down and vice versa, and are prone to falling. Through research, it is found that for a toilet cabinet with non-adjustable height, when the elderly sit down, they are extremely likely to lose their balance, which may cause minor fright or serious injuries such as wrestling fractures. In the research cases, most of the elderly people who suffered fractures during toilet use had hip fractures, and in the medical field, hip fractures are generally considered catastrophic for the elderly.

[0003] At present, there have already appeared toilet cabinets that can be adjusted in height, but these lifting toilet cabinets still lack the ability to assist in adjusting the center of gravity of the elderly. Therefore, during the process of the elderly sitting down quickly, the elderly may still lose their center of gravity due to inertia, resulting in the situation of the elderly falling backward. Summary of the Invention

[0004] Object of the Invention: In order to overcome the deficiencies existing in the prior art, the present invention provides a movable backrest mechanism of a lifting toilet cabinet, which can ensure that the center of gravity of the user is forward during the process of the user sitting down, effectively preventing the situation that the user loses the center of gravity and falls backward due to inertia during the process of quickly sitting down.

[0005] Technical Solution: To achieve the above object, a movable backrest mechanism of a lifting toilet cabinet according to the present invention includes a toilet seat that can be movably changed in height on the toilet cabinet. The toilet seat is divided into a low-position use state and a high-position sitting-up state according to the height where it is located; a backrest member that can be movably tilted is provided on the toilet seat, and the backrest member corresponds to the human back; in the low-position use state, the backrest member is flattened on the toilet seat; in the high-position sitting-up state, the backrest member tilts relative to the toilet seat to form a human backrest structure; during the process of the toilet seat switching between the low-position use state and the high-position sitting-up state, the backrest member gradually tilts or gradually flattens, so that the center of gravity of the human body close to the backrest member changes correspondingly; the toilet seat includes a seat ring part and a backrest member, and both the backrest member and the seat ring part are arc-shaped components that make up the toilet seat; the seat ring part can be movably lifted and lowered, and the upper contour surface of the seat ring part is the human buttocks supporting surface; one end of the backrest member is connected to the seat ring part, and the other end of the backrest member can be flipped relative to the seat ring part; in the low-position use state, the backrest member is flipped to be flush with the upper contour surface of the seat ring part; in the high-position sitting-up state, the backrest member is flipped to form a certain angle with the upper contour surface of the seat ring part; during the process of the toilet seat switching between the low-position use state and the high-position sitting-up state, the backrest member gradually flips.

[0006] Further, during the process of the toilet seat ring switching between the low - position use state and the high - position sitting - up state, the backrest member flips at a variable speed, and the flipping speed of the backrest member first gradually increases and then gradually decreases; the center of gravity of the human body close to the backrest member changes adaptively with the flipping of the backrest member.

[0007] Further, during the process of the toilet seat ring switching between the low - position use state and the high - position sitting - up state, the seat part rises and falls at a variable speed, and the rising and falling speed of the seat part first gradually increases and then gradually decreases; the center of gravity of the human body close to the backrest member changes adaptively with the rising and falling of the seat part.

[0008] Further, a first variable - speed lifting unit is provided at the bottom support of the seat part, and a second variable - speed lifting unit is provided at the end of the backrest member far from the seat part.

[0009] Further, both the backrest member and the seat part are arc - shaped components that make up the toilet seat ring; the differential lifting of the first variable - speed lifting unit and the second variable - speed lifting unit causes the backrest member to gradually flip.

[0010] Further, the seat part is ring - shaped, and a receiving groove is provided on the seat part. The backrest member and the second variable - speed lifting unit are correspondingly arranged in the receiving groove; the lifting of the second variable - speed lifting unit alone drives the backrest member to flip.

[0011] Further, the backrest member and the seat part are connected to each other through a hinge structure, enabling the backrest member to flip relative to the seat part.

[0012] Further, one end of the backrest member is connected to the seat part through a flexible connecting member; during the flipping process of the backrest member, one end of the backrest member remains connected to the seat part.

[0013] Beneficial effects: The movable backrest mechanism of the lifting toilet seat of the present invention has the following beneficial effects:

[0014] 1) The toilet seat ring has a low - position use state and a high - position sitting - up state. When the toilet seat ring is in the high - position sitting - up state, the backrest member tilts up to form a human backrest structure. The backrest structure can ensure that the center of gravity of the elderly person moves forward during the sitting - down process, effectively preventing the elderly person from losing the center of gravity due to inertia and falling backward during the rapid sitting - down process.

[0015] 2) During the process of the toilet seat ring switching between the low - position use state and the high - position sitting - up state, the backrest member gradually tilts up or gradually flattens, causing the center of gravity of the elderly person to change gradually, avoiding the elderly person from becoming unstable due to sudden changes in the center of gravity.

[0016] 3) During the process of the toilet seat switching between the low - position use state and the high - position sitting - up state, the toilet seat moves up and down at a variable speed, and the backrest member flips at a variable speed, making the toilet seat and the backrest member move more slowly at the beginning of startup and when about to stop. During the use by the elderly, the change of the center of gravity is more stable, and it is not easy to lose balance and get injured. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG. Figure 1 is a schematic structural view of the toilet seat in the low - position use state;

[0018] FIG. Figure 2 is a schematic structural view of the toilet seat in the high - position sitting - up state;

[0019] FIG. Figure 3 is a schematic structural view of the toilet seat with a receiving groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] As shown in the Figures 1 to 3 An active backrest mechanism of a lifting toilet cabinet includes a toilet seat 1 that can be movably changed in height on the toilet cabinet. The toilet seat 1 is divided into a low - position use state and a high - position sitting - up state according to its height. In the low - position use state, that is, when the toilet seat 1 is in the low - position use state, the user can sit on the toilet seat 1 to use the toilet. In the high - position sitting - up state, that is, when the toilet seat 1 is in the high - position sitting - up state, it is convenient for the user who needs to use the toilet to sit down on the toilet seat 1, or for the user who has finished using the toilet to complete the standing - up action.

[0022] A backrest member 2 that can be movably tilted is provided on the toilet seat 1. The backrest member 2 is arranged at the rear of the toilet seat 1 and corresponds to the human back. In the low - position use state, the backrest member 2 is flattened on the toilet seat 1 so that the user can sit on the toilet seat 1. In the high - position sitting - up state, the backrest member 2 tilts relative to the toilet seat 1 to form a human backrest structure. The users targeted by the present invention are mainly the elderly. The elderly are prone to falling backward during the process of sitting down on the toilet seat 1. In the present invention, due to the backrest structure, when the elderly who need to use the toilet sit down on the toilet seat 1, the backrest structure can ensure that the center of gravity of the elderly moves forward during the sitting - down process, effectively preventing the elderly from losing the center of gravity due to inertia and falling backward during the rapid sitting - down process. When the elderly who have finished using the toilet need to stand up, the backrest structure can also make the center of gravity of the elderly move more forward, making it easier for the elderly to complete the standing - up action.

[0023] During the process of the toilet seat 1 switching between the low - position use state and the high - position sitting - up state, the backrest member 2 gradually tilts up or gradually flattens to push or support the human back, rather than tilting up or flattening after the toilet seat 1 switches to the high - position sitting - up state or the low - position use state. The lifting process of the toilet seat 1 and the tilting up or flattening of the backrest member 2 are synchronized. Thus, the center of gravity of the human body close to the backrest member 2 changes gradually accordingly. During the process of the toilet seat 1 rising from the low - position use state to the high - position sitting - up state, the backrest member 2 gradually tilts up, thereby providing an appropriate back - pushing force to assist the elderly in getting up. During the process of the toilet seat 1 descending from the high - position sitting - up state to the low - position use state, the backrest member 2 can support the back of the elderly, making the center of gravity of the elderly gradually move backward, and assisting the elderly to more smoothly change from a semi - squatting posture to a sitting posture.

[0024] The toilet seat 1 includes a seat ring part 3 and a backrest member 2. The seat ring part 3 is movable up and down. The upper contour surface of the seat ring part 3 is the human buttocks supporting surface. When the user uses the toilet, most of the user's buttocks are located on the upper contour surface of the seat ring part 3. One end of the backrest member 2 is connected to the seat ring part 3, and the other end of the backrest member 2 can be flipped relative to the seat ring part 3. In the low - position use state, the backrest member 2 is flipped to be flush with the upper contour surface of the seat ring part 3. When the user uses the toilet, the user's buttocks can sit on the upper contour surface of the backrest member 2 after it is flipped flat. In the high - position sitting - up state, the end of the backrest member 2 far from the seat ring part 3 flips upward, so that the backrest member 2 is flipped to form a certain angle with the upper contour surface of the seat ring part 3, thereby making the end of the backrest member 2 far from the seat ring part 3, and then forming a human backrest structure. During the process of the toilet seat 1 switching between the low - position use state and the high - position sitting - up state, the backrest member 2 gradually flips to gradually change the center of gravity of the user.

[0025] During the process of switching between the low - position use state and the high - position sitting - up state of the toilet seat 1, the backrest member 2 flips with variable speed, and the flipping speed of the backrest member 2 first gradually increases and then gradually decreases; the center of gravity of the human body close to the backrest member 2 changes adaptively with the flipping of the backrest member 2. The backrest member 2 moves more slowly at the beginning of starting and when it is about to stop. Correspondingly, in the initial stage and the stop stage of the flipping of the backrest member 2, the amplitude of the front - and - back change of the user's center of gravity is smaller, which can give the user time to adapt to the change of the center of gravity moving back and forth. Correspondingly, during the process of switching between the low - position use state and the high - position sitting - up state of the toilet seat 1, the seat ring part 3 moves up and down with variable speed, and the lifting speed of the seat ring part 3 first gradually increases and then gradually decreases; the center of gravity of the human body close to the backrest member 2 changes adaptively with the lifting of the seat ring part 3. The seat ring part 3 moves more slowly at the beginning of starting and when it is about to stop. Thus, in the initial stage and the stop stage of the lifting of the seat ring part 3, the amplitude of the up - and - down change of the user's center of gravity is smaller, which can give the user time to adapt to the change of the center of gravity moving up and down. In summary, the variable - speed flipping of the backrest member 2 and the variable - speed lifting of the seat ring part 3 can make the change of the user's center of gravity more stable, prevent the discomfort caused by the change of the center of gravity to the user, and when used by the elderly, the elderly are not likely to lose their balance and fall.

[0026] A first variable - speed lifting unit 4 is provided at the bottom support of the seat ring part 3, and the first variable - speed lifting unit 4 can drive the seat ring part 3 to move up and down. One end of the backrest member 2 far from the seat ring part 3 is provided with a second variable - speed lifting unit 5, and the second variable - speed lifting unit 5 can drive the end of the backrest member 2 far from the seat ring part 3 to flip.

[0027] An embodiment is as shown in the appendix Figure 1 As shown in an embodiment, both the backrest member 2 and the seat ring part 3 are arc - shaped components that make up the toilet seat 1. The seat ring part 3 is a major - arc shape, and the backrest member 2 is a minor - arc shape. The seat ring part 3 and the backrest member 2 are combined into a ring shape. During the process of the first variable - speed lifting unit 4 driving the seat ring part 3 to move up and down, one end of the backrest member 2 connected to the seat ring part 3 moves up and down accordingly. When the backrest member 2 flips, the differential lifting cooperation of the first variable - speed lifting unit 4 and the second variable - speed lifting unit 5 is required to make the backrest member 2 gradually flip.

[0028] An embodiment is as shown in the appendix Figure 3 As shown in an embodiment, the seat ring part 3 is ring - shaped, and a receiving groove 6 is provided on the seat ring part 3. The backrest member 2 and the second variable - speed lifting unit 5 are correspondingly arranged in the receiving groove 6. During the process of the first variable - speed lifting unit 4 driving the seat ring part 3 to move up and down, the backrest member 2 and the second variable - speed lifting unit 5 located on the seat ring part 3 also move up and down accordingly. When it is necessary to make the backrest member 2 flip, the lifting of the second variable - speed lifting unit 5 can drive the backrest member 2 to flip alone.

[0029] A specific structural embodiment of the first variable - speed lifting unit 4 and the second variable - speed lifting unit 5 is as shown in the appendix Figure 1as shown (in the figure, only the first variable-speed lifting unit 4 and the second variable-speed lifting unit 5 on the lower half of the toilet seat ring 1 are shown), the other half is mirror-symmetrical, attached Figure 1 in which the toilet seat ring 1 is in the low-position use state, attached Figure 2 in which the toilet seat ring 1 is in the high-position sitting-up state; there is a back plate 7 below the toilet seat ring 1, the back plate 7 is fixedly connected to the toilet seat cabinet, and a motor 8 that can rotate forward and backward and change speed is arranged on the back plate 7. The motor 8 drives the transmission block 10 to move up and down through the lifting lead screw 9, and the transmission block 10 pushes the seat ring part 3 to move up and down through the lifting plate 11. The seat ring part 3 is fixed to the upper end of the lifting plate 11; a front rack 12 is arranged on one side of the transmission block 10, and the front rack 12 drives the rear rack 14 to move through the variable-speed gear set 13. The upper end of the rear rack 14 is rotatably connected to the link block 15, and the link block 15 is rotatably connected to the backrest member 2; through the transmission of the variable-speed gear set 13, the movement speed of the rear rack 14 is greater than that of the front rack 12. Thus, when the motor 8 drives the transmission block 10 to move upward, the upward movement speed of the backrest member 2 is greater than that of the seat ring part 3. Therefore, during the upward movement of the seat ring part 3, the backrest member 2 gradually tilts relative to the seat ring part 3, that is, the backrest member 2 changes from the Figure 1 shown straight state and gradually changes to Figure 2 the inclined state shown in the figure. The inclined backrest member 2 forms a human backrest structure. In addition, in order to make the backrest member 2 change speed and flip, and the seat ring part 3 change speed and lift during the process of switching between the low-position use state and the high-position sitting-up state of the toilet seat ring 1, correspondingly, the variable-speed motor 8 has a lower speed at the beginning of starting and when it is about to stop, that is, the rotation speed of the motor 8 shows a trend of gradually increasing and then gradually decreasing.

[0030] In one embodiment, one end of the backrest member 2 is connected to the seat ring part 3 through a hinge structure, so that the backrest member 2 can flip relative to the seat ring part 3. Toilet pads can be laid on the upper ends of the backrest member 2 and the seat ring part 3 to cover the hinge structure, prevent the hinge structure from pinching the user's body, and improve the user experience.

[0031] In one embodiment, one end of the backrest member 2 is connected to the seat ring part 3 through a flexible connecting member; during the flipping process of the backrest member 2, one end of the backrest member 2 remains connected to the seat ring part 3. One type of flexible connecting member can be a flexible rope. One end of the backrest member 2 is strung together with the seat ring part 3 through the flexible rope, so that one end of the backrest member 2 and the seat ring part 3 are always kept connected.

[0032] Combined with attached Figure 1 and 2The working mode of the present invention will be described as follows: When the elderly need to use the toilet, the toilet seat 1 is in the high-position sitting-up state. Then the elderly sit down against the backrest member 2. Subsequently, the motor 8 rotates forward, and the rotation speed of the motor 8 first gradually increases and then gradually decreases, causing the seat part 3 to move downward at a variable speed, and the backrest member 2 to turn over at a variable speed until it is flush with the seat part 3. The center of gravity of the elderly moves downward and backward accordingly, and the elderly also changes from a semi-squatting posture to a sitting posture. After the elderly finish using the toilet, the motor 8 rotates in reverse, and the rotation speed of the motor 8 also first gradually increases and then gradually decreases, causing the seat part 3 to move upward at a variable speed, and the backrest member 2 to turn over at a variable speed until it forms a certain angle with the seat part 3, forming a backrest structure. The center of gravity of the elderly moves upward and forward accordingly, and the elderly changes from a sitting posture to a semi-squatting posture. Then the elderly gets up. The backrest member 2 can also apply an appropriate thrust upward to assist the elderly in getting up.

[0033] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An active backrest mechanism for a lifting seat cabinet, characterized in that: It includes a toilet seat ring (1) that can be moved to change its height on a toilet cabinet. The toilet seat ring (1) is divided into a low - position use state and a high - position sitting - up state according to its height. There is a backrest member (2) that can be moved to tilt on the toilet seat ring (1), and the backrest member (2) corresponds to the human back. In the low - position use state, the backrest member (2) lies flat on the toilet seat ring (1). In the high - position sitting - up state, the backrest member (2) tilts relative to the toilet seat ring (1) to form a human backrest structure. During the process of the toilet seat ring (1) switching between the low - position use state and the high - position sitting - up state, the backrest member (2) gradually tilts or gradually lies flat, so that the center of gravity of the human body close to the backrest member (2) changes correspondingly. The toilet seat ring (1) includes a seat ring part (3) and a backrest member (2). Both the backrest member (2) and the seat ring part (3) are arc - shaped components that make up the toilet seat ring (1). The seat ring part (3) can be moved up and down, and the upper contour surface of the seat ring part (3) is the human buttocks supporting surface. One end of the backrest member (2) is connected to the seat ring part (3), and the other end of the backrest member (2) can be flipped relative to the seat ring part (3). In the low - position use state, the backrest member (2) flips to be flush with the upper contour surface of the seat ring part (3). In the high - position sitting - up state, the backrest member (2) flips to form a certain angle with the upper contour surface of the seat ring part (3). During the process of the toilet seat ring (1) switching between the low - position use state and the high - position sitting - up state, the backrest member (2) gradually flips.

2. The movable backrest mechanism of a liftable sitting cabinet according to claim 1, characterized in that: During the process of the toilet seat ring (1) switching between the low - position use state and the high - position sitting - up state, the backrest member (2) flips at a variable speed, and the flipping speed of the backrest member (2) first gradually increases and then gradually decreases. The center of gravity of the human body close to the backrest member (2) changes adaptively with the flipping of the backrest member (2).

3. The movable backrest mechanism of a liftable sitting cabinet according to claim 2, characterized in that: During the process of the toilet seat ring (1) switching between the low - position use state and the high - position sitting - up state, the seat ring part (3) moves up and down at a variable speed, and the lifting speed of the seat ring part (3) first gradually increases and then gradually decreases. The center of gravity of the human body close to the backrest member (2) changes adaptively with the lifting of the seat ring part (3).

4. The movable backrest mechanism of a liftable sitting cabinet according to claim 3, characterized in that: A first variable - speed lifting unit (4) is supported and arranged at the bottom of the seat ring part (3), and a second variable - speed lifting unit (5) is supported and arranged at the end of the backrest member (2) away from the seat ring part (3).

5. The movable backrest mechanism of a liftable sitting cabinet according to claim 4, characterized in that: Both the backrest member (2) and the seat ring part (3) are arc - shaped components that make up the toilet seat ring (1). The differential lifting of the first variable - speed lifting unit (4) and the second variable - speed lifting unit (5) causes the backrest member (2) to gradually flip.

6. The movable backrest mechanism of a liftable sitting cabinet according to claim 4, characterized in that: The seat ring part (3) is ring - shaped, and there is a receiving groove (6) on the seat ring part (3). The backrest member (2) and the second variable - speed lifting unit (5) are correspondingly arranged in the receiving groove (6). The lifting of the second variable - speed lifting unit (5) alone drives the backrest member (2) to flip.

7. The movable backrest mechanism of a lifting sitting cabinet according to claim 1, characterized in that: The backrest member (2) and the seat ring part (3) are connected to each other through a hinge structure, so that the backrest member (2) can be flipped relative to the seat ring part (3).

8. The movable backrest mechanism of a liftable sitting cabinet according to claim 1, characterized in that: One end of the backrest member (2) is connected to the seat ring part (3) through a flexible connecting member; so that during the flipping process of the backrest member (2), one end of the backrest member (2) remains connected to the seat ring part (3).

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