Child dental seat

Abstract

The invention discloses a child dental seat, and relates to the technical field of medical instruments, the child dental seat comprises a base and a cushion movably mounted on the top of the base, a backrest adjusting assembly is movably and fixedly mounted on the rear side of the cushion, a headrest is fixedly mounted on the top of the backrest adjusting assembly, a restraint assembly is movably mounted on the rear side of the backrest adjusting assembly, and the restraint assembly is fixedly mounted on the top of the backrest adjusting assembly. A clamping assembly is movably installed on the rear side of the headrest, and handrails are movably installed on the left side and the right side of the cushion. A gear motor drives a lifting screw to rotate, drives a sliding column to slide along a mounting groove and drives an upper backrest to lift and slide along the outer part of a lower back plate, so that a guide rod slides along the inner part of a limiting groove for limiting, and the upper backrest lifts along the outer part of the lower back plate to drive a headrest to adjust the height of the headrest; it is guaranteed that the head of a child on the cushion can lean against the headrest, the back of the child leans against the backrest adjusting assembly, and therefore the child seat can adapt to the body types of children at different stages through the large adjusting range of the backrest adjusting assembly.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a children's dental chair. Background Art

[0002] In dental hospitals, dental chairs are a very common medical equipment. Existing dental chairs include a base, a backrest, a pillow, a seat cushion and an adjusting drive component. The pillow is arranged on the backrest, and the relative distance between the pillow and the backrest can be adjusted by a connecting frame connecting the backrest and the pillow. The backrest and the seat cushion are both arranged above the base, and the adjusting drive component can be used to adjust the angles of the backrest and the seat cushion to facilitate the dentist's surgical operation.

[0003] The existing technology has the following problems: Existing dental chairs are usually designed according to the body shape of adults, which are not very comfortable for children. Due to the large differences in children's body shapes, simply adjusting the distance between the backrest and the pillow cannot fully adapt to the child's body shape. At the same time, children have poor patience and self-control. When using the dental chair, children may feel fear and refuse to cooperate with the treatment and move their bodies around. It is not convenient to restrain and fix the child's position, which affects the treatment. Summary of the invention

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: The cam is configured to move the upper and lower ends of the cams to move the upper and lower ends of the cam, wherein the cams are configured to move the upper and lower ends of the cam, wherein the cams are configured to move the upper and lower ends of the cam.

[0005] A further improvement of the technical solution of the present invention is that the constraint assembly includes a connecting block and an ear plate fixedly connected to the left and right sides of the rear side of the upper backrest, the connecting block is movably hinged with a constraint plate inside, a worm gear is fixedly installed on the outside of the constraint plate, a limiting cover is fixedly installed on the rear side of the upper backrest, a bidirectional motor is fixedly installed inside the limiting cover, a worm gear is fixedly installed on the left and right sides of the bidirectional motor, a transmission rod corresponding to the worm gear is movably installed on the inner side of the ear plate, and the transmission rod is connected to the worm gear.

[0006] A further improvement of the technical solution of the present invention is that the clamping assembly includes an installation frame fixedly installed on the rear side of the headrest, the front side of the installation frame is provided with a left-right symmetrical guide groove, the interior of the installation frame is movably installed with a positive and negative thread screw, the left and right sides of the outside of the constraint plate are movably installed with a sliding seat, the front side of the sliding seat is fixedly connected with a connecting rod, the inner side of the connecting rod is fixedly connected with a clamping plate, and the left and right sides of the positive and negative thread screw are fixedly installed with a handwheel located outside the installation frame.

[0007] A further improvement of the technical solution of the present invention is that guide rods are fixedly connected to the left and right sides of the upper backrest, and limiting grooves are provided on the left and right sides of the lower back plate, and the guide rods are movably connected to the inside of the limiting grooves.

[0008] A further improvement of the technical solution of the present invention is that a cushion 1 is fixedly installed on the front side of the upper backrest, a support plate offset from the cushion 1 is fixedly installed on the front side of the lower back plate, and a cushion 2 is fixedly installed on the front side of the support plate.

[0009] A further improvement of the technical solution of the present invention is that: the support plate is arranged in an "L" shape, and the support plate is arranged to fit the front side of the upper backrest.

[0010] A further improvement of the technical solution of the present invention is that the restraining plate is arranged in an arc shape, and a cotton pad is fixedly installed on the inner side of the restraining plate.

[0011] A further improvement of the technical solution of the present invention is that a coupling is movably installed between the worm and the transmission rod.

[0012] A further improvement of the technical solution of the present invention is that a Bluetooth player is fixedly installed below the inner side of the clamping plate.

[0013] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art: 1. The present invention provides a children's dental chair, which drives a lifting screw located in an installation groove to rotate through a reduction motor, drives a sliding column to slide along the installation groove through the rotation of the lifting screw, drives an upper backrest to lift and slide along the outer part of a lower back plate through the sliding column, and causes a guide rod to slide along the inner part of a limiting groove for limiting, thereby driving a headrest to adjust the height of the headrest by lifting the upper backrest along the outer part of the lower back plate, ensuring that the head of a child on the seat cushion can lean on the headrest and the back on the backrest adjustment component, thereby adapting to the body shape of children at different stages through the larger adjustment range of the backrest adjustment component.

[0014] 2. The present invention provides a children's dental chair, which controls a bidirectional motor to drive the worms on both sides to rotate, and the rotation of the worm drives the transmission rod to rotate, driving the worm wheel meshing therewith to rotate, thereby driving the restraint plate hinged on the inner side of the connecting block to rotate along the axis of the worm wheel, so that the restraint plate is clamped inward from the side from the child's upper arm area, tightening the child's upper body, thereby preventing the child's body from moving around and affecting the treatment.

[0015] 3. The present invention provides a children's dental chair, which drives the forward and reverse threaded screws located in the installation frame to rotate by rotating a hand wheel. The rotation of the forward and reverse threaded screws drives the sliding seats on both sides of the outside to drive the connecting rod to move inward, so that the clamping plates on the inner side of the connecting rod are clamped above both sides of the child's ears to fix the child's head, thereby preventing involuntary movement of the head from affecting treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a children's dental chair of the present invention; Figure 2 is a schematic cross-sectional structure diagram of a backrest adjustment assembly of the present invention; Figure 3 It is a structural schematic diagram of the support plate of the present invention; Figure 4 It is a schematic diagram of the installation position of the restraint assembly of the present invention; Figure 5 It is a structural schematic diagram of the constraint assembly of the present invention; Figure 6 It is a schematic structural diagram of the clamping assembly of the present invention.

[0017] In the figure: 1. base; 2. seat cushion; 3. backrest adjustment assembly; 31. connecting frame; 32. lower back plate; 33. upper backrest; 34. mounting slot; 35. sliding column; 36. lifting screw; 37. outer sleeve; 38. reduction motor; 39. guide rod; 310. limit slot; 311. back cushion one; 312. support plate; 313. back cushion two; 4. headrest; 5. constraint assembly; 51. connecting block; 52. ear plate; 53. constraint plate; 54. worm gear; 55. limit cover; 56. bidirectional motor; 57. transmission rod; 58. worm; 59. coupling; 510. cotton pad; 6. clamping assembly; 61. mounting frame; 62. guide slot; 63. positive and negative thread screw; 64. slide seat; 65. connecting rod; 66. clamping plate; 67. hand wheel; 68. Bluetooth player; 7. armrest. DETAILED DESCRIPTION

[0018] like Figures 1 to 6As shown, the present invention provides a children's dental chair, including a base 1 and a seat cushion 2 movably installed on the top of the base 1, a back adjustment component 3 is movably fixedly installed on the rear side of the seat cushion 2, a headrest 4 is fixedly installed on the top of the back adjustment component 3, a restraint component 5 is movably installed on the rear side of the back adjustment component 3, a clamping component 6 is movably installed on the rear side of the headrest 4, and armrests 7 are movably installed on the left and right sides of the seat cushion 2. The back adjustment component 3 includes a connecting frame 31 fixedly connected to the rear side of the seat cushion 2, a lower back plate 32 is fixedly connected to the top of the connecting frame 31, an upper backrest 33 is movably connected to the outer side of the lower back plate 32, a mounting groove 34 is opened inside the lower back plate 32, a sliding column 35 located in the mounting groove 34 is fixedly connected to the inner side of the upper backrest 33, a lifting screw 36 is movably installed inside the mounting groove 34, a jacket 37 is fixedly installed at the bottom of the lower back plate 32, a reduction motor 38 connected to the lifting screw 36 is fixedly installed inside the jacket 37, and the sliding column 35 is threadedly connected to the outer side of the lifting screw 36.

[0019] The reduction motor 38 drives the lifting screw 36 located in the installation groove 34 to rotate, and the rotation of the lifting screw 36 drives the sliding column 35 to slide along the installation groove 34, and the sliding column 35 drives the upper backrest 33 to lift and slide along the outside of the lower back plate 32, so that the guide rod 39 slides along the inside of the limiting groove 310 for limiting, so that the headrest 4 is driven to adjust the height of the headrest 4 by the upper backrest 33 lifting and lowering along the outside of the lower back plate 32, ensuring that the child on the seat cushion 2 can lean his head on the headrest 4 and his back on the backrest adjustment component 3, so that the larger adjustment range of the backrest adjustment component 3 can be used to adapt to the body shape of children at different stages.

[0020] like Figure 4 and Figure 5 As shown, the constraint assembly 5 includes a connecting block 51 and an ear plate 52 fixedly connected to the left and right sides of the rear side of the upper backrest 33, the connecting block 51 is internally movably hinged with a constraint plate 53, the outside of the constraint plate 53 is fixedly installed with a worm gear 54, the rear side of the upper backrest 33 is fixedly installed with a limiting cover 55, the interior of the limiting cover 55 is fixedly installed with a bidirectional motor 56, the left and right sides of the bidirectional motor 56 are fixedly installed with a worm 58, and the inner side of the ear plate 52 is movably installed with a transmission rod 57 corresponding to the worm gear 54, and the transmission rod 57 is connected to the worm 58.

[0021] By controlling the bidirectional motor 56 to drive the worm 58 on both sides to rotate, the rotation of the worm 58 drives the transmission rod 57 to rotate, driving the worm wheel 54 meshing therewith to rotate, thereby driving the restraint plate 53 hinged on the inner side of the connecting block 51 to rotate along the axis of the worm wheel 54, so that the restraint plate 53 is clamped inward from the side from the child's upper arm area, tightening the child's upper body, thereby preventing the child's body from moving around and affecting the treatment.

[0022] like Figure 4 and Figure 6 As shown, the clamping assembly 6 includes a mounting frame 61 fixedly mounted on the rear side of the headrest 4, a left-right symmetrical guide groove 62 is opened on the front side of the mounting frame 61, a forward and reverse threaded screw 63 is movably mounted inside the mounting frame 61, a slide 64 is movably mounted on the left and right sides of the outside of the constraint plate 53, a connecting rod 65 is fixedly connected to the front side of the slide 64, a clamping plate 66 is fixedly connected to the inner side of the connecting rod 65, and a hand wheel 67 located outside the mounting frame 61 is fixedly mounted on the left and right sides of the forward and reverse threaded screw 63.

[0023] The hand wheel 67 is rotated to drive the forward and reverse threaded screw 63 in the mounting frame 61 to rotate, and the rotation of the forward and reverse threaded screw 63 drives the slide seats 64 on both sides of the outside to drive the connecting rod 65 to move inward, so that the clamping plates 66 on the inner side of the connecting rod 65 are clamped above both sides of the child's ears to fix the child's head, thereby preventing involuntary movement of the head from affecting the treatment.

[0024] like Figure 2 As shown, guide rods 39 are fixedly connected to the left and right sides of the upper backrest 33 , and limiting grooves 310 are provided on the left and right sides of the lower back plate 32 , and the guide rods 39 are movably engaged in the limiting grooves 310 .

[0025] The guide rod 39 on the inner side of the upper backrest 33 is clamped in the inner side of the limiting groove 310, so as to play a limiting and guiding role when the upper backrest 33 moves along the outer side of the lower back plate 32, thereby improving stability.

[0026] like Figure 3 and Figure 4 As shown, a cushion 1 311 is fixedly installed on the front side of the upper backrest 33 , a support plate 312 offset from the cushion 1 311 is fixedly installed on the front side of the lower back plate 32 , and a cushion 2 313 is fixedly installed on the front side of the support plate 312 .

[0027] The support plate 312 is arranged in an “L” shape, and is arranged to fit the front side of the upper backrest 33 .

[0028] By disposing the second cushion 313 and the first cushion 311 on the front side of the support plate 312 and staggered disposition of the first cushion 311 and the second cushion 313, the lifting influence is avoided while ensuring stable support for the back.

[0029] like Figure 5 As shown, the restraining plate 53 is arranged in an arc shape, and a cotton pad 510 is fixedly installed on the inner side of the restraining plate 53 .

[0030] The arc-shaped restraining plate 53 is tightened inward from both sides of the child's upper arm to restrain and limit the child's body part, thereby preventing the child's body from resisting and causing activities that affect the treatment.

[0031] like Figure 5As shown, a coupling 59 is movably installed between the worm 58 and the transmission rod 57.

[0032] The worm 58 and the transmission rod 57 are connected and fixed by the setting of the coupling 59, and can be disassembled for easy maintenance.

[0033] like Figure 6 As shown, a Bluetooth player 68 is fixedly installed at the lower inner side of the clamping plate 66 .

[0034] Through the setting of Bluetooth player 68, it can connect to an external mobile phone via Bluetooth to play music. Music can not only divert children's attention, but also play an empathetic role and help relieve resistance and tension.

[0035] The following is a detailed description of the working principle of the children's dental chair.

[0036] like Figures 1 to 6 As shown, the child sits on the seat cushion 2, and the reduction motor 38 is controlled externally according to the height and body shape of the child. The reduction motor 38 drives the lifting screw 36 located in the installation groove 34 to rotate, and the lifting screw 36 is rotated to drive the sliding column 35 to slide along the installation groove 34, and the upper backrest 33 is driven by the sliding column 35 to lift and slide along the outside of the lower back plate 32, so that the guide rod 39 is limited by the internal sliding of the limiting groove 310, so that the headrest 4 is driven to adjust the height of the headrest 4 by the upper backrest 33 along the outside of the lower back plate 32. It is ensured that the child on the seat cushion 2 can lean his head against the headrest 4 and his back against the backrest adjustment component 3, so that the larger adjustment range of the backrest adjustment component 3 can be used to adapt to the body shape of children at different stages, and the bidirectional motor 56 is controlled to drive the worm 58 on both sides thereof to rotate, and the rotation of the worm 58 drives the backrest 4 to adjust the height of the headrest 4. The transmission rod 57 connected through the coupling 59 rotates, and the rotation of the transmission rod 57 drives the worm gear 54 meshing therewith to rotate, thereby driving the constraint plate 53 hinged on the inner side of the connecting block 51 to rotate along the axis of the worm gear 54, so that the constraint plate 53 is clamped inward from the side from the child's upper arm area to tighten the upper body of the child, thereby preventing the child's body from moving around and affecting the treatment. The forward and reverse threaded screw 63 located in the installation frame 61 is driven to rotate by rotating the hand wheel 67, and the forward and reverse threaded screw 63 is driven to rotate to drive the sliding seats 64 on both sides of the outside to drive the connecting rod 65 to move inward, so that the clamping plates 66 on the inner side of the connecting rod 65 are clamped above the two sides of the child's ears to fix the child's head, thereby preventing the child's head from unconsciously moving and affecting the treatment. The Bluetooth player 68 can be connected to a mobile phone to play music to divert the child's attention, play an empathy role, and help relieve tension.

[0037] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A pediatric dental chair, comprising a base (1) and a cushion (2) movably mounted on the top of the base (1), characterized in that: A backrest adjustment component (3) is movably fixedly mounted on the rear side of the seat cushion (2), a headrest (4) is fixedly mounted on the top of the backrest adjustment component (3), a restraint component (5) is movably mounted on the rear side of the backrest adjustment component (3), a clamping component (6) is movably mounted on the rear side of the headrest (4), and armrests (7) are movably mounted on both left and right sides of the seat cushion (2); The backrest adjustment assembly (3) comprises a connecting frame (31) fixedly connected to the rear side of the seat cushion (2); a lower back plate (32) is fixedly connected to the top of the connecting frame (31); an upper backrest (33) is movably connected to the outside of the lower back plate (32); a mounting groove (34) is provided inside the lower back plate (32); a sliding column (35) located in the mounting groove (34) is fixedly connected to the inside of the upper backrest (33); a lifting screw (36) is movably installed inside the mounting groove (34); a jacket (37) is fixedly installed at the bottom of the lower back plate (32); a reduction motor (38) connected to the lifting screw (36) is fixedly installed inside the jacket (37); and the sliding column (35) is threadedly connected to the outside of the lifting screw (36).

2. A children's dental chair according to claim 1, characterized in that: The constraint assembly (5) comprises a connecting block (51) and an ear plate (52) fixedly connected to the left and right sides of the rear side of the upper backrest (33); the connecting block (51) is internally movably hinged with a constraint plate (53); the constraint plate (53) is externally fixedly mounted with a worm gear (54); a limit cover (55) is fixedly mounted on the rear side of the upper backrest (33); a bidirectional motor (56) is internally fixedly mounted on the limit cover (55); a worm gear (58) is fixedly mounted on the left and right sides of the bidirectional motor (56); a transmission rod (57) corresponding to the worm gear (54) is movably mounted on the inner side of the ear plate (52); the transmission rod (57) is connected to the worm gear (58).

3. A children's dental chair according to claim 2, characterized in that: The clamping assembly (6) comprises a mounting frame (61) fixedly mounted on the rear side of the headrest (4); a left-right symmetrical guide groove (62) is provided on the front side of the mounting frame (61); a positive and negative threaded screw (63) is movably mounted inside the mounting frame (61); a slide seat (64) is movably mounted on both left and right sides of the outside of the restraining plate (53); a connecting rod (65) is fixedly connected to the front side of the slide seat (64); a clamping plate (66) is fixedly connected to the inner side of the connecting rod (65); and a hand wheel (67) located outside the mounting frame (61) is fixedly mounted on both left and right sides of the positive and negative threaded screw (63).

4. A children's dental chair according to claim 1, characterized in that: Guide rods (39) are fixedly connected to the left and right sides of the upper backrest (33), and limit grooves (310) are provided on the left and right sides of the lower back plate (32), and the guide rods (39) are movably engaged with the inside of the limit grooves (310).

5. The children's dental chair according to claim 1, characterized in that: A back cushion 1 (311) is fixedly mounted on the front side of the upper backrest (33), a support plate (312) offset from the back cushion 1 (311) is fixedly mounted on the front side of the lower back plate (32), and a back cushion 2 (313) is fixedly mounted on the front side of the support plate (312).

6. A children's dental chair according to claim 5, characterized in that: The support plate (312) is arranged in an "L" shape, and the support plate (312) is arranged to fit the front side of the upper backrest (33).

7. A children's dental chair according to claim 2, characterized in that: The restraining plate (53) is arranged in an arc shape, and a cotton pad (510) is fixedly mounted on the inner side of the restraining plate (53).

8. A children's dental chair according to claim 2, characterized in that: A coupling (59) is movably installed between the worm (58) and the transmission rod (57).

9. A children's dental chair according to claim 3, characterized in that: A Bluetooth player (68) is fixedly mounted below the inner side of the clamping plate (66).

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