Breast feeding chair

Abstract

The utility model discloses a breast feeding chair, and relates to the field of breast feeding. The breast feeding chair comprises a seat plate, supporting legs are arranged below the seat plate, T-shaped armrests are symmetrically arranged on the two sides of the seat plate, circular blind holes are downwards formed in the upper surfaces of the armrests, hinge ball heads are arranged in the circular blind holes, and the hinge ball heads can rotate along the circular blind holes and partially protrude out of the upper surfaces of the armrests; the protruding part of the hinged ball head is fixedly connected with a connecting rod, and the other end of the connecting rod is fixedly connected with a supporting plate used for lifting an arm. A threaded hole is formed in the lower surface, communicating with the handrail, of the circular blind hole, a threaded rod is screwed in the threaded hole, and a square blind hole is formed in the lower end of the threaded rod; a motor base is fixedly connected to the lower surface of the handrail, a stepping motor is arranged in the motor base, and a rotating shaft of the stepping motor is movably connected with the square blind hole and used for driving the threaded rod to ascend and descend so as to abut against or loosen the hinged ball head. The breast feeding chair can dynamically adjust and fix the supporting plate for lifting arms.

Description

Technical Field

[0001] This utility model relates to the field of breastfeeding, and in particular to a breastfeeding chair. Background Technology

[0002] During breastfeeding, because a newborn's stomach is in a horizontal position, most new mothers nowadays breastfeed lying down, which can easily cause the baby to spit up. The correct way is for the mother to sit up, hold the baby horizontally with one hand, and gently hold the nipple with the other hand to feed. However, because the newborn's digestive system is not fully developed, a single breastfeeding session usually lasts 15-40 minutes, and the sucking time is relatively long. However, the arm will feel sore from supporting the newborn for a long time, which is not conducive to the mother's postpartum recovery. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a breastfeeding chair with a support plate that can dynamically adjust and fix the arm support.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A breastfeeding chair includes a seat, with support legs underneath. T-shaped armrests are symmetrically arranged on both sides of the seat. A circular blind hole is formed on the upper surface of each armrest, and a hinged ball joint is disposed within the blind hole. The hinged ball joint can rotate along the blind hole and partially protrudes from the upper surface of the armrest. A connecting rod is fixedly connected to the protruding portion of the hinged ball joint, and a support plate for supporting the arm is fixedly connected to the other end of the connecting rod. A threaded hole is formed directly below the blind hole, connecting to the lower surface of the armrest. A threaded rod is screwed into the threaded hole, and a square blind hole is formed at the lower end of the threaded rod. A motor mount is fixedly connected to the lower surface of the armrest, and a stepper motor is disposed within the motor mount. The shaft of the stepper motor is movably connected to the square blind hole to drive the threaded rod to rise and fall to tighten or loosen the hinged ball joint. An angle is provided below the seat. An angle adjustment mechanism includes a fixed cylinder, two rotating rods, and two square frames. The fixed cylinder is fixed to the lower surface of the seat plate and its two ends are connected. The rotating rods are made of iron and are movably inserted into both ends of the fixed cylinder. The square frames are fixed to the outer ends of the rotating rods, and the handrail is inserted into the square frames. The handrail inserted into the square frames has a vertically mounted rack on its rod body. The upper surface of the square frames has an electric push rod, the output end of which is retractable and inserted into the tooth groove of the rack to limit the lifting and lowering of the handrail. An electromagnet is installed inside the fixed cylinder and is located between the two rotating rods. The end faces of both ends of the fixed cylinder have circumferentially mounted limiting strips. The rod body of the rotating rod located at the end of the fixed cylinder has a fixed limiting ring. The surface of the limiting ring that contacts the end face of the fixed cylinder has a matching limiting strip, which is used to limit the rotation angle of the handrail after the electromagnet attracts the rotating rod.

[0006] In some embodiments, the angle adjustment mechanism further includes a spring. A limiting block is symmetrically arranged on the outer surface of one end of the rotating rod inside the fixed cylinder. An elongated limiting groove is formed on the outer surface of the fixed cylinder, connecting to the interior, to accommodate the left-right movement and rotation of the limiting block. The width of the limiting groove is greater than the thickness of the limiting block, and its circumferential extension direction forms a preset angle with the axis of the fixed cylinder, allowing the limiting block to move axially and rotate within the limiting groove. Two springs are provided, each located at one end of the electromagnet. One end of the spring abuts against the side of the electromagnet, and the other end abuts against the end face of the rotating rod. When the electromagnet is de-energized and demagnetized, the elastic force of the springs will drive the rotating rod away from the electromagnet, causing the limiting strip of the limiting ring to be misaligned with the limiting strip on the end face of the fixed cylinder.

[0007] Compared to existing technologies, this invention achieves at least the following beneficial effects: This invention utilizes the linkage adjustment of the hinged ball joint and threaded rod to achieve multi-angle rotation and precise locking of the support plate. Combined with the electromagnet adsorption of the rotating rod and the engagement design of the limiting strip, the rotation angle of the armrest is simultaneously fixed. Simultaneously, the cooperation of the electric push rod and rack limits the armrest's height adjustment, thereby dynamically adapting to breastfeeding postures and ensuring stability, effectively relieving arm fatigue and reducing the risk of infant spitting up. Furthermore, the rack height adjustment and multi-directional rotation function of the support plate adapt to users of different body types, improving breastfeeding comfort. Additionally, the integrated linkage control of the stepper motor, electromagnet, and electric push rod simplifies the operation process, enhances safety and reliability, and solves the problems of cumbersome adjustment and poor adaptability of traditional breastfeeding chairs. Attached Figure Description

[0008] One or more embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:

[0009] Figure 1 This is a structural schematic diagram of the breastfeeding chair of this utility model;

[0010] Figure 2 for Figure 1 A diagram showing the state of the support plate during use;

[0011] Figure 3 This is a schematic diagram of the breastfeeding chair of this utility model when the backrest is hidden during use;

[0012] Figure 4 This is an exploded view of the handrail portion of this utility model;

[0013] Figure 5 This is a schematic diagram of the angle adjustment mechanism of this utility model;

[0014] Figure 6 This is an unfolded view of the angle adjustment mechanism of this utility model;

[0015] Figure 7 for Figure 1 Enlarged view of region A in the middle;

[0016] Figure 8 for Figure 1 Enlarged view of region B in the middle;

[0017] Figure 9 for Figure 6 A magnified view of region C in the middle.

[0018] The following are the labels in the diagram: 1. Seat plate; 2. Support leg; 3. Armrest; 31. Circular blind hole; 311. Threaded hole; 312. Threaded rod; 3121. Square blind hole; 32. Hinge ball head; 321. Connecting rod; 33. Support plate; 331. Flexible buffer layer; 332. Restraint band; 34. Rack; 4. Motor base; 41. Stepper motor; 5. Angle adjustment mechanism; 51. Fixed cylinder; 511. Long limiting groove; 52. Rotating rod; 521. Limiting ring; 522. Limiting block; 53. Square frame; 54. Electromagnet; 55. Spring; 6. Electric push rod; 61. Clamping tooth; 7. Limiting strip; 8. Power cord; 9. Microcontroller; 10. Start button; 11. Backrest; 12. Foot pedal; 121. Anti-slip texture. Detailed Implementation

[0019] The present invention will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present invention more complete and to fully convey the concept of the present invention to those skilled in the art.

[0020] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0021] like Figures 1 to 9As shown, the breastfeeding chair of this utility model includes a seat 1, with support legs 2 located below the seat 1. T-shaped armrests 3 are symmetrically arranged on both sides of the seat 1. A circular blind hole 31 is formed on the upper surface of each armrest 3, and a hinged ball joint 32 is installed within the circular blind hole 31. The hinged ball joint 32 can rotate along the circular blind hole 31 and partially protrudes from the upper surface of the armrest 3. A connecting rod 321 is fixedly connected to the protruding part of the hinged ball joint 32, and a support plate 33 for supporting the arm is fixedly connected to the other end of the connecting rod 321. A threaded hole 311 is formed directly below the circular blind hole 31, connecting to the lower surface of the armrest 3. A threaded rod 312 is threaded into the threaded hole 311, and a square blind hole 3121 is formed at the lower end of the threaded rod 312. A motor base 4 is fixedly connected to the lower surface of the handrail 3. A stepper motor 41 is installed inside the motor base 4. The shaft of the stepper motor 41 is movably connected to a square blind hole 3121 to drive the threaded rod 312 to rise and fall to tighten or loosen the hinged ball head 32. An angle adjustment mechanism 5 is provided below the seat plate 1. The angle adjustment mechanism 5 includes a fixed cylinder 51, two rotating rods 52, and two square frames 53. The fixed cylinder 51 is fixed to the lower surface of the seat plate 1 and its two ends are connected. The rotating rods 52 are made of iron and are movably inserted into both ends of the fixed cylinder 51. The square frames 53 are fixed to the outer ends of the rotating rods 52, and the handrail 3 is inserted into the square frames 53. The rod part of the handrail 3 inserted into the square frame 53 is vertically provided with a rack 34. An electric push rod 6 is provided on the upper surface of the square frame 53. The output end of the electric push rod 6 can be extended and retracted into the tooth groove of the rack 34 to limit the rise and fall of the handrail 3. An electromagnet 54 is installed inside the fixed cylinder 51, and the electromagnet 54 is located between the two rotating rods 52. The end faces of both ends of the fixed cylinder 51 are provided with limiting strips 7 in the circumferential direction. The rod body of the rotating rod 52 located at the end of the fixed cylinder 51 is fixed with a limiting ring 521. The surface of the limiting ring 521 that contacts the end face of the fixed cylinder 51 is provided with matching limiting strips 7, which are used to limit the rotation angle of the handrail 3 after the electromagnet 54 attracts the rotating rod 52.

[0022] In this embodiment, the support plate 33 is adjusted at multiple angles via the hinge ball joint 32. Combined with the coordinated control of the electromagnet 54 and the electric push rod 6, the rotation angle and lifting height of the armrest 3 are simultaneously fixed. This solves the problems of traditional nursing chairs requiring manual adjustment, unstable fixation, and inability to adapt to dynamic postures, significantly improving the comfort and safety of the breastfeeding process. The armrest 3 serves as the carrier for mounting the hinge ball joint 32, providing the mechanical basis for multi-directional adjustment. The hinge ball joint 32 and the circular blind hole 31 allow the support plate 33 to rotate freely, adapting to different breastfeeding postures and facilitating dynamic adjustment of the arm position supporting the baby, reducing arm fatigue. The threaded rod 312 is driven by the stepper motor 41 to tighten or loosen the hinge ball head 32. In this embodiment, the end of the threaded rod 312 that tightens the hinge ball head 32 is conical. When the conical threaded rod 312 tightens the hinge ball head 32, the point-to-surface contact enhances the friction, thereby better fixing the relative position of the support plate 33 and accurately locking the angle of the support plate 33 while preventing accidental displacement of the support plate 33 during breastfeeding. The fixed cylinder 51 and the rotating rod 52 allow the armrest 3 to rotate around the horizontal axis, facilitating the adjustment of the armrest 3's tilt to accommodate different breastfeeding postures. The rack 34 and the electric push rod 6 limit the lifting and lowering of the armrest 3, preventing discomfort to the baby due to the arm sinking during breastfeeding. The electromagnet 54 attracts the rotating rod 52, and together with the limiting strip 7 on the end face of the fixed cylinder 51 and the limiting strip 7 on the limiting ring 521 on the rotating rod 52, the angle of rotation of the armrest 3 can be locked, thereby ensuring the stability of the armrest 3 and preventing accidental rotation of the armrest 3 during breastfeeding.

[0023] refer to Figure 2 Specifically, the angle adjustment mechanism 5 also includes a spring 55. A limiting block 522 is symmetrically arranged on the outer surface of one end of the rotating rod 52 inside the fixed cylinder 51. An elongated limiting groove 511 is formed on the outer surface of the fixed cylinder 51 to accommodate the left-right movement and rotation of the limiting block 522. The width of the elongated limiting groove 511 is greater than the thickness of the limiting block 522, and its circumferential extension direction forms a preset angle with the axis of the fixed cylinder 51, allowing the limiting block 522 to move and rotate axially within the elongated limiting groove 511. Two springs 55 are provided, respectively located at both ends of the electromagnet 54. One end of the spring 55 abuts against the side of the electromagnet 54, and the other end abuts against the end face of the rotating rod 52. After the electromagnet 54 is de-energized and demagnetized, the elastic force of the spring 55 will drive the rotating rod 52 away from the electromagnet 54, causing the limiting strip 7 of the limiting ring 521 to be misaligned with the limiting strip 7 on the end face of the fixed cylinder 51.

[0024] At this time, the rotating rod 52 can rotate within a specified angle range of the elongated limiting groove 511 under the restriction of the limiting block 522. When the electromagnet 54 is energized, the rotating rod 52 will be attracted by the electromagnet 54, and at the same time, the limiting strip 7 on the surface of the limiting ring 521 will engage with the limiting strip 7 on the end face of the fixed cylinder 51, thereby limiting the rotation of the armrest 3. In this embodiment, the limiting block 522 and the elongated limiting groove 511 are used to limit the range of motion of the rotating rod 52, and at the same time prevent the armrest 3 from tilting or rotating excessively. When the electromagnet 54 is de-energized, the spring 55 can quickly release the angle lock of the armrest 3 to facilitate readjustment of the breastfeeding posture.

[0025] To solve the problem of the cumbersome step-by-step adjustment required by traditional nursing chairs, this breastfeeding chair also includes a power cord 8, a microcontroller 9, and a start button 10. The microcontroller 9 has a pre-set program to control the rotation number of the stepper motor 41. The power cord 8 is electrically connected to the stepper motor 41, the electromagnet 54, and the electric push rod 6. The start button 10 is located on the power cord 8 and is used to trigger the linkage control. Pressing the start button 10 causes the stepper motor 41 to drive the threaded rod 312 upward according to the pre-set rotation number of the microcontroller 9, thereby tightening the hinged ball head 32. Simultaneously, the electromagnet 54 is energized, attracting the rotating rod 52, causing the limiting strip 7 of the limiting ring 521 to engage with the limiting strip 7 on the end face of the fixed cylinder 51. Furthermore, the output end of the electric push rod 6 extends and engages with the tooth groove of the rack 34 to lock the lifting and lowering of the armrest 3. Through linkage control, pregnant women can complete multi-dimensional locking with just one button operation, which simultaneously fixes the rotation angle of the support plate 33 and restricts the up-down movement and forward-backward rotation of the handrail 3, significantly improving ease of use.

[0026] To ensure that the limiting strip 7 on the side of the limiting ring 521 and the limiting strip 7 on the end face of the fixed cylinder 51 can be smoothly misaligned after the spring 55 pushes the rotating rod 52 away, the width of the elongated limiting groove 511 is twice the thickness of the limiting block 522. Meanwhile, to ensure that the handrail 3 can rotate back and forth along the axis of the fixed cylinder 51, the angle between the circumferential extension direction of the elongated limiting groove 511 and the axis of the fixed cylinder 51 is 30 to 60 degrees.

[0027] The surface of the support plate 33 is provided with a flexible cushioning layer 331 and restraint straps 332. The flexible cushioning layer 331 is made of memory foam, which can increase the comfort and safety of the support plate 33. The restraint straps 332 are used to restrain the pregnant woman's wrists on the support plate 33, so that the armrests 3 can move with the pregnant woman when she dynamically adjusts her posture in the absence of power.

[0028] The shaft of the stepper motor 41 has a square cross-section, which matches the cross-sectional shape of the square blind hole 3121. This design ensures that when the stepper motor 41 rotates, its shaft can only drive the threaded rod 312 to rise and fall, while the stepper motor 41 will not rise and fall with the threaded rod 312.

[0029] To enhance the stability of the engagement between the output end of the electric push rod 6 and the rack 34, the output end of the electric push rod 6 is provided with a locking tooth 61 that matches the tooth groove of the rack 34, which effectively enhances the stability of the handrail 3 when it is fixed.

[0030] An adjustable backrest 11 is hinged to the back of the seat 1. A foot pedal 12 is located at the lower front of the seat 1, and the surface of the foot pedal 12 has anti-slip texture 121. A start button 10 is installed on the upper surface of the foot pedal 12. When the start button 10 on the foot pedal 12 is pressed, the following actions are executed simultaneously: the stepper motor 41 drives the threaded rod 312 to press against the hinged ball head 32; the electromagnet 54 is energized to attract the rotating rod 52 to fix the rotation angle of the armrest 3; the output end of the electric push rod 6 extends and engages in the tooth groove of the rack 34 to limit the lifting and lowering of the armrest 3. Through the step-triggered linkage control, the hands are effectively freed, realizing "one-button foot control locking", while enhancing the convenience of operation.

[0031] The breastfeeding chair is used as follows: First, adjust the backrest 11 to a comfortable angle and fix it. Place both feet on the foot pedal 12 with anti-slip texture 121. Hold the baby in front of your chest, place your arms on the flexible buffer layer 331 of the support plate 33 and fix them with restraint straps 332. Hold the baby in a suitable position so that you can adjust the hinge ball joint 32 to a suitable angle. By stepping on the start button 10 on the foot pedal 12, the stepper motor 41 is triggered to lock the angle of the support plate 33, the electromagnet 54 fixes the rotation angle of the armrest 3, and the electric push rod 6 limits the height of the armrest 3, realizing "one-click synchronous locking". If you need to adjust during breastfeeding, press the button again to turn off the power to release the lock. After adjusting the position of holding the baby, step on the start button 10 again to relock.

[0032] It should be understood that all the above embodiments are exemplary and not restrictive. Various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this utility model should be within the protection scope of this utility model.

Claims

1. A breastfeeding chair, comprising a seat (1) and a support leg (2) disposed below the seat (1), characterized in that: The seat plate (1) is symmetrically provided with T-shaped armrests (3) on both sides. The upper surface of the armrest (3) is provided with a circular blind hole (31) facing downward. A hinge ball head (32) is provided in the circular blind hole (31). The hinge ball head (32) can rotate along the circular blind hole (31) and partially protrudes from the upper surface of the armrest (3). The protruding part of the hinge ball head (32) is fixedly connected to a connecting rod (321). The other end of the connecting rod (321) is fixedly connected to a support plate (33) for supporting the arm. The circular blind hole (31) is connected to the lower surface of the handrail (3) with a threaded hole (311). A threaded rod (312) is screwed into the threaded hole (311). A square blind hole (3121) is opened at the lower end of the threaded rod (312). A motor base (4) is fixedly connected to the lower surface of the handrail (3). A stepper motor (41) is provided in the motor base (4). The shaft of the stepper motor (41) is movably connected to the square blind hole (3121) to drive the threaded rod (312) to rise and fall to tighten or loosen the hinge ball head (32). An angle adjustment mechanism (5) is provided below the seat plate (1). The angle adjustment mechanism (5) includes a fixed cylinder (51), two rotating rods (52) and two square frames (53). The fixed cylinder (51) is fixed to the lower surface of the seat plate (1) and its two ends are connected. The rotating rods (52) are made of iron and are movably inserted into both ends of the fixed cylinder (51). The square frames (53) are fixed to the outer ends of the rotating rods (52). The armrest (3) is inserted into the square frame (53). The armrest (3) inserted into the square frame (53) has a rack (34) vertically installed on its rod body. An electric push rod (6) is provided on the upper surface of the square frame (53). The output end of the electric push rod (6) can be telescopically inserted into the tooth groove of the rack (34) to limit the lifting and lowering of the handrail (3); the fixed cylinder (51) is equipped with an electromagnet (54), and the electromagnet (54) is located between two rotating rods (52); the end faces of the fixed cylinder (51) are provided with limiting strips (7) in the circumferential direction; the rotating rod (52) is fixed with a limiting ring (521) at the end of the fixed cylinder (51); the surface of the limiting ring (521) that contacts the end face of the fixed cylinder (51) is provided with matching limiting strips (7), which are used to limit the rotation angle of the handrail (3) after the electromagnet (54) attracts the rotating rod (52).

2. The breastfeeding chair according to claim 1, characterized in that: The angle adjustment mechanism (5) also includes a spring (55). A limit block (522) is symmetrically arranged on the outer surface of one end of the rotating rod (52) inside the fixed cylinder (51). An elongated limit groove (511) is formed on the outer surface of the fixed cylinder (51) to accommodate the left and right movement and rotation of the limit block (522). The width of the elongated limit groove (511) is greater than the thickness of the limit block (522), and its circumferential extension direction forms a preset angle with the axis of the fixed cylinder (51), so that the limit block (522)... 2) It can move and rotate axially within the elongated limiting groove (511); two springs (55) are provided, and the two springs (55) are respectively located at both ends of the electromagnet (54). One end of the spring abuts against the side of the electromagnet (54), and the other end abuts against the end face of the rotating rod (52). After the electromagnet (54) is de-energized and demagnetized, the elastic force of the spring (55) will drive the rotating rod (52) away from the electromagnet (54), so that the limiting strip (7) of the limiting ring (521) is misaligned with the limiting strip (7) on the end face of the fixed cylinder (51).

3. The breastfeeding chair according to claim 2, characterized in that: It also includes a power cord (8), a microcontroller (9) and a start button (10); the microcontroller (9) has a preset program for controlling the number of rotations of the stepper motor (41); the power cord (8) is electrically connected to the stepper motor (41), the electromagnet (54) and the electric push rod (6); the start button (10) is set on the power cord (8) and is used to trigger the linkage control.

4. The breastfeeding chair according to claim 3, characterized in that: The width of the elongated limiting groove (511) is twice the thickness of the limiting block (522), and the angle between the circumferential extension direction of the elongated limiting groove (511) and the axis of the fixed cylinder (51) is 30 to 60 degrees.

5. The breastfeeding chair according to claim 4, characterized in that: The surface of the support plate (33) is provided with a flexible buffer layer (331) and a restraint band (332).

6. The breastfeeding chair according to claim 1, characterized in that: The shaft cross-section of the stepper motor (41) is square, which is matched with the cross-sectional shape of the square blind hole (3121).

7. The breastfeeding chair according to claim 1, characterized in that: The output end of the electric push rod (6) is provided with a locking tooth (61) that matches the tooth groove of the rack (34).

8. The breastfeeding chair according to claim 3, characterized in that: The back of the seat (1) is hinged with an adjustable backrest (11), and a foot pedal (12) is provided at the lower front end of the seat (1). The surface of the foot pedal (12) is provided with anti-slip texture (121); the start button (10) is installed on the upper surface of the foot pedal (12).

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