Adjustable backrest cushion

Abstract

The utility model discloses an adjustable back cushion which comprises a base, and the front side of the base is open and provided with a cover face. A cushion layer located on the inner side of the cover face is arranged in the base and comprises a plurality of cushion blocks which are arranged in the height direction of the base and can move independently. A driving mechanism located on the rear portion of the cushion block is arranged in the base. The driving mechanism comprises a two-way screw rod rotationally connected with the base, and two independent threaded sections of the two-way screw rod are in threaded connection with a first sliding block and a second sliding block respectively; a limiting rod used for limiting rotation of the first sliding block and the second sliding block on the two-way lead screw is arranged in the base. One end of the two-way screw rod extends to the outer side of the base and is provided with a turntable for driving the two-way screw rod to rotate; the rotating disc is sleeved with a locking mechanism fixedly connected with the base. And connecting rods are hinged to one sides of the first sliding block and the second sliding block. According to the adjustable back cushion, the thickness of the back cushion can be adjusted at multiple angles, and the adjusting mode is simple and convenient.

Description

Technical Field

[0001] The utility model relates to an adjustable backrest cushion and belongs to the technical field of medical equipment. Background Art

[0002] Clinically, when patients are eating or sitting up to rest, or when patients in the respiratory department are short of breath and have difficulty breathing, they need to raise the head of the bed and lean their backs against the bed to facilitate their breathing. However, the beds in hospitals are hard, which can easily cause back discomfort in patients, and the elevation angle of the beds is not suitable for all patients.

[0003] Therefore, the patient's family members usually put multiple pillows or cushions on the patient's back to adjust the angle between the patient and the bed, or frequently adjust the inclination angle of the bed to achieve the most comfortable state for the patient. The thickness of a single pillow or cushion cannot be adjusted. The method of putting multiple cushions or pillows to adjust the distance between the patient's back and the bed not only increases the difficulty of cleaning the ward, but also leads to a large amount of pillows or cushions being wasted. Therefore, the above two adjustment methods bring great inconvenience to patients and their families.

[0004] Chinese utility model patent CN209450153U discloses a lumbar cushion, comprising a first wrapping surface, a second wrapping surface, at least one inner core, at least one inflation valve body and a first connecting piece; the first wrapping surface and the second wrapping surface are fitted together to form at least one accommodating cavity; the inner core is a high-resilience sponge, which is correspondingly arranged in the accommodating cavity; the inflation valve body is connected to the accommodating cavity and is used to adjust the amount of gas in the accommodating cavity; the first connecting piece is arranged on the second wrapping surface and is used to connect a U-shaped pillow; although the thickness of this lumbar cushion can be adjusted, it cannot be adjusted at different angles according to different positions of the cushion at different heights. When the patient needs to raise the back and lower the lumbar cushion, this lumbar cushion cannot adjust the thickness at different positions of the back. Utility Model Content

[0005] The utility model aims to solve the above technical problems and provide an adjustable backrest cushion whose thickness can be adjusted at multiple angles according to the needs of patients and whose adjustment method is simple, so as to solve the technical problem that the thickness of the cushion cannot be adjusted.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The cam is an adjustable backrest cushion, comprising a base, the front side of the base being open and provided with a cover surface; a cushion layer located inside the base and located inside the cover surface, the cushion layer comprising a plurality of independently movable cushion blocks arranged along the height direction of the base; a driving mechanism located at the rear of the cushion block and used to drive the cushion block to extend toward the cover surface or to retract toward the inside of the base is provided inside the base; the driving mechanism comprises a bidirectional screw rod rotatably connected to the base, and a first slider and a second slider are respectively threadedly connected on two independent threaded sections of the bidirectional screw rod; a limit rod for limiting the rotation of the first slider and the second slider on the bidirectional screw rod is provided inside the base; one end of the bidirectional screw rod extends to the outside of the base, and a rotating disk for driving the bidirectional screw rod to rotate is provided; a locking mechanism fixedly connected to the base is sleeved on the rotating disk; a connecting rod extending toward the cushion block and being hinged to the cushion block is hingedly provided on one side of the first slider and the second slider.

[0008] In the present invention, the inner side of the cover surface and the back side of the cushion block are both the side facing the base.

[0009] Therefore, by rotating the turntable to drive the bidirectional screw to rotate, the first slider and the second slider threadedly connected to the bidirectional screw will approach or move away from each other on the bidirectional screw at the same time under the action of the limit rod, and the cushion block will extend toward the cover surface or retract into the inner side of the base under the drive of the first slider, the second slider and the connecting rod, so that the thickness of the cushion can be adjusted at multiple angles along the height direction of the cushion, and the head support or lumbar support can be increased or the back support can be adjusted in a small range, giving patients a multi-faceted choice, and the adjustment method is simple. The locking mechanism can prevent the cushion block from sinking when the patient sits or leans.

[0010] According to the embodiments of the present invention, the present invention can be further optimized. The following is the technical solution formed after optimization:

[0011] Specifically, a group of independent driving mechanisms are arranged on the back side of each cushion block.

[0012] Specifically, the front projection of the plurality of independently movable pads has the same shape as the front projection of the cover surface.

[0013] In order to facilitate locking the position of the pad and prevent it from sinking, specifically, the turntable includes a sleeve and a disc body; the end of the bidirectional screw rod extending to the outside of the base is provided with a first connecting key, and the inner side of the sleeve is provided with a first key groove corresponding to the first connecting key and extending along the length direction of the bidirectional screw rod, and the outer side of the sleeve is provided with a second connecting key.

[0014] Specifically, the locking mechanism is cylindrical and is sleeved on the outside of the sleeve, and a second keyway is opened on the inner side of the locking mechanism and extends along the length direction of the bidirectional screw for the turntable to slide; a rotation groove is opened at one end of the second keyway close to the turntable along the circumferential direction of the locking mechanism for the turntable to rotate.

[0015] Specifically, the cushion block is partially located on the inner side of the base; the cushion block includes a back plate and a cushion layer arranged on the front side of the back plate; one end of the connecting rod is hinged to the first slider or the second slider, and the other end is hinged to the back plate.

[0016] Specifically, the limiting rod is arranged on the bottom plate inside the base and is slidably connected with the first sliding block and the second sliding block.

[0017] Specifically, the cover surface is an elastic cloth surface.

[0018] Compared with the prior art, the beneficial effect of the utility model is that the adjustable back cushion of the utility model rotates the turntable so that the driving mechanism drives the cushion block to extend toward the cover surface or retract into the inner side of the base, so as to adjust the thickness of the back cushion and find the most comfortable angle when leaning back, thereby reducing the workload of the patient's family and nursing staff and alleviating the patient's discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is an exploded view of the internal structure of the utility model;

[0021] Figure 3 It is a partial structural sectional view of the utility model;

[0022] Figure 4 yes Figure 3 A local enlarged view of point M.

[0023] In the figure

[0024] 1-base; 2-cover; 3-cushion; 31-cushion block; 311-back plate; 312-cushion layer; 4-driving mechanism; 41-bidirectional screw; 411-first connecting key; 42-first slider; 43-second slider; 44-limiting rod; 45-turntable; 451-sleeve; 452-disk body; 453-first keyway; 454-second connecting key; 5-locking mechanism; 51-second keyway; 52-rotation slot; 6-connecting rod. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0026] like Figure 1-Figure 4 As shown, the adjustable backrest cushion of the present embodiment comprises a base 1, the front side of the base 1 is open and provided with a cover 2, the cover 2 is an elastic cloth surface, so as to facilitate the extension of the cushion block 31; a cushion layer 3 is provided inside the base 1 and is located inside the cover 2, the cushion layer 3 comprises a plurality of independently movable cushion blocks 31 arranged along the height direction of the base 1; the front projection of the plurality of independently movable cushion blocks 31 is the same as the front projection shape of the cover 2, when the backrest cushion is of normal thickness, the front faces of the plurality of cushion blocks 31 can be on the same plane, and when the cushion block 31 is at the maximum extension length, a portion of the cushion block 31 is still inside the base 1; the cushion block 31 is partially located on the inner side of the base 1.

[0027] The cushion block 31 includes a back plate 311 and a cushion layer 312 arranged on the front side of the back plate, and the cushion layer 312 is a sponge cushion layer. A driving mechanism 4 is arranged inside the base 1 at the rear of the cushion block 31 for driving the cushion block 31 to extend toward the cover surface 2 or to retract into the base 1; a group of independent driving mechanisms 4 are arranged on the back side of each cushion block 31.

[0028] The driving mechanism 4 includes a bidirectional screw rod 41 rotatably connected to the base 1, and a first slider 42 and a second slider 43 are respectively threadedly connected to two independent threaded sections of the bidirectional screw rod 41; a limit rod 44 is provided inside the base 1 for limiting the rotation of the first slider 42 and the second slider 43 on the bidirectional screw rod 41; one end of the bidirectional screw rod 41 extends to the outside of the base 1, and a turntable 45 is provided for driving the bidirectional screw rod 41 to rotate; one side of the first slider 42 and the second slider 43 are both hingedly provided with a connecting rod 6 extending in the direction of the cushion block 31 and hinged to the cushion block 31.

[0029] One end of the connecting rod 6 is hinged to the first slider 42 or the second slider 43, and the other end of the connecting rod 6 is hinged to the back plate 311. The limiting rod 44 is arranged on the bottom plate inside the base 1 and is slidably connected to the first slider 42 and the second slider 43.

[0030] Thus, by rotating the turntable 42 to drive the bidirectional screw 41 to rotate, the first slider 42 and the second slider 43 threadedly connected to the bidirectional screw 41 will approach or move away from each other on the bidirectional screw 41 at the same time under the action of the limit rod 44, and the cushion block 31 will extend toward the cover 2 or retract into the inner side of the base 1 under the drive of the first slider 42, the second slider 43 and the connecting rod 6, so that the thickness of the cushion can be adjusted at multiple angles along the height direction of the cushion.

[0031] The turntable 45 is sleeved with a locking mechanism 5 fixedly connected to the base 1; the turntable 45 includes a sleeve 451 and a disc body 452, the locking mechanism 5 is cylindrical and sleeved on the outside of the sleeve 451; the end of the bidirectional screw rod 41 extending to the outside of the base 1 is provided with a first connecting key 411, the inner side of the sleeve 451 is provided with a first key groove 453 corresponding to the first connecting key 411 and extending along the length direction of the bidirectional screw rod 41, and the outer side of the sleeve 451 is provided with a second connecting key 454.

[0032] A second keyway 51 extending along the length direction of the bidirectional screw rod 41 is provided on the inner side of the locking mechanism 5 for the turntable 45 to slide; a rotation groove 52 for the turntable 45 to rotate is provided at one end of the second keyway 51 close to the turntable 45 along the circumferential direction of the locking mechanism 5.

[0033] In order to facilitate locking the position of the cushion block 31 and prevent the cushion block 31 from sinking when the patient leans back, the turntable 45 can be locked by the locking mechanism 5. Specifically, the sleeve 451 of the turntable 45 is sleeved on one end of the bidirectional screw rod 41 extending to the outside of the base 1, and the first key groove 453 in the sleeve 451 cooperates with the first connecting key 411. When the turntable 45 rotates, the bidirectional screw rod 41 is driven to rotate; in order to lock the position of the cushion block 31, it is necessary to lock the rotation of the bidirectional screw rod 41. Therefore, a second connecting key 454 is provided on the outer wall of the sleeve 451, and a second key extending along the length direction of the bidirectional screw rod 41 for the turntable 45 to slide is provided on the inner wall of the locking mechanism 5 fixedly arranged on the side wall of the base 1. Keyway 51, when the second connecting key 454 is in the second keyway 51, the turntable 45 cannot rotate due to the restriction of the second keyway 51. At this time, the turntable 45 needs to be pulled outward and the second connecting key 454 needs to be moved into the rotating groove 52. Since the rotating groove 52 is opened along the circumferential direction of the locking mechanism 5, the second connecting key 454 will move in the rotating groove 52 when the disk body 452 is rotated, thereby driving the bidirectional screw rod 41 to rotate through the cooperation of the first connecting key 411 and the first keyway 453, and extending or retracting the cushion block 31; when the adjustment is completed, the second connecting key 454 is pushed back into the second keyway 51 to complete the locking; each independent cushion block 31 can be adjusted according to the above method.

[0034] The adjustable back cushion of this embodiment rotates the turntable so that the drive mechanism drives the pad to extend toward the cover surface or retract into the inner side of the base, so as to adjust the thickness of the back cushion and find the most comfortable angle for back rest, thereby reducing the workload of the patient's family and nursing staff and alleviating the patient's discomfort.

[0035] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

Claims

1. An adjustable backrest cushion, characterized in that: The invention comprises a base (1), the front side of the base (1) is open and provided with a cover surface (2); a cushion layer (3) is provided inside the base (1) and is located inside the cover surface (2); the cushion layer (3) comprises a plurality of independently movable cushion blocks (31) arranged along the height direction of the base (1); a driving mechanism (4) is provided inside the base (1) and is located at the rear of the cushion block (31) and is used to drive the cushion block (31) to extend toward the cover surface (2) or to retract toward the inside of the base (1); The driving mechanism (4) comprises a bidirectional screw (41) rotatably connected to the base (1), and two independent threaded sections of the bidirectional screw (41) are respectively threadedly connected to a first slider (42) and a second slider (43); a limit rod (44) is provided inside the base (1) for limiting the rotation of the first slider (42) and the second slider (43) on the bidirectional screw (41); one end of the bidirectional screw (41) extends to the outside of the base (1) and is provided with a rotating disk (45) for driving the bidirectional screw (41) to rotate; a locking mechanism (5) fixedly connected to the base (1) is sleeved on the rotating disk (45); and a connecting rod (6) extending in the direction of the cushion block (31) and hinged to the cushion block (31) is hingedly provided on one side of each of the first slider (42) and the second slider (43).

2. The adjustable backrest cushion according to claim 1, characterized in that: A group of independent driving mechanisms (4) is provided on the back side of each cushion block (31).

3. The adjustable backrest cushion according to claim 1, characterized in that: The rotating disk (45) comprises a sleeve (451) and a disk body (452); a first connecting key (411) is provided at one end of the bidirectional screw rod (41) extending to the outside of the base (1); a first key groove (453) corresponding to the first connecting key (411) and extending along the length direction of the bidirectional screw rod (41) is formed on the inner side of the sleeve (451); and a second connecting key (454) is provided on the outer side of the sleeve (451).

4. The adjustable backrest cushion according to claim 3, characterized in that: The locking mechanism (5) is cylindrical and is sleeved on the outside of the sleeve (451). A second keyway (51) is provided on the inside of the locking mechanism (5) and extends along the length direction of the bidirectional screw rod (41) for the rotating disk (45) to slide. A rotation groove (52) is provided at one end of the second keyway (51) close to the rotating disk (45) and along the circumferential direction of the locking mechanism (5) for the rotating disk (45) to rotate.

5. The adjustable backrest cushion according to claim 1, characterized in that: The cushion block (31) is partially located on the inner side of the base (1); the cushion block (31) comprises a back plate (311) and a cushion layer (312) arranged on the front side of the back plate; one end of the connecting rod (6) is hinged to the first slider (42) or the second slider (43), and the other end of the connecting rod (6) is hinged to the back plate (311).

6. The adjustable backrest cushion according to any one of claims 1 to 5, characterized in that: The limiting rod (44) is arranged on the bottom plate inside the base (1) and is slidably connected to the first sliding block (42) and the second sliding block (43).

7. The adjustable backrest cushion according to any one of claims 1 to 5, characterized in that: The cover surface (2) is an elastic fabric surface.

8. The adjustable backrest cushion according to any one of claims 1 to 5, characterized in that: The front projection of the plurality of independently movable cushion blocks (31) has the same shape as the front projection of the cover surface (2).

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