Backrest protection device for dental chair

Abstract

The utility model discloses a backrest protection equipment for dental chair, including seat main part and its backrest, is equipped with the lifting assembly on the backrest top. The component includes the adjusting slit of backrest middle part, and the mobile shell is installed in the slit, and the mobile shell bottom is connected with the lifting frame and the pillow support, and the backrest back surface is equipped with the reinforcing arch. Two groove strips are set up in the adjusting slit side wall, and the top edge is equipped with the step groove and is connected with the detachable lifting plate and the flexible pad through the magic tape. The symmetrical movable sliding block is arranged in the mobile shell, and the movable sliding block one side is connected with the clamping strip and the rack in the groove strip cooperation, and the other side is connected with the trapezoidal block, and the conical platform block is arranged between the two trapezoidal blocks, and the clamping adjustment is realized through the top bolt drive. Through the sliding adjustment mechanism, the pillow can be lifted in a wide range, which not only meets the adult use demand, but also can be reduced to the height suitable for children. The detachable lifting plate cooperates with the flexible pad to provide differentiated support, which effectively solves the problem that the existing dental chair cannot simultaneously adapt to adults and children.

Description

Technical Field

[0001] This utility model relates to the field of dental chair technology, specifically to a backrest protection device for dental chairs. Background Technology

[0002] The backrest of a dental chair is a core component supporting the patient's head, neck, and back, and its design directly affects treatment comfort and safety. Current dental chairs typically accommodate patients of different heights by using an adjustable, sliding pillow above the backrest; however, because the longitudinal length of the backrest is fixed, the pillow's adjustment range is limited.

[0003] Publication number (CN215132612U) discloses a dental surgical chair, including a main body, a backrest, a pillow, and a protrusion. A reinforcing frame is fixedly connected to the lower ends of the main body, backrest, and sub-body. Front and rear armrests are fixedly connected to the front and rear sides of the reinforcing frame, respectively. A support rod is fixedly connected to the right side of the rear armrest. The position of the limiting pillow can be easily moved according to the user's needs through the use of fixed and movable Velcro. Furthermore, the rotational connection between the threaded rod and the protrusion allows for front and rear head positioning and fixation by the front and rear baffles, preventing the user's head from swaying and affecting the normal operation of the surgery. The connection between the support rod and the corrugated pipe facilitates the positioning and fixation of the surgical light. The inclusion of a container facilitates the placement of surgical instruments, thus bringing many conveniences to the surgery. However, this patent still has the following problems in actual use:

[0004] Like most existing chair pillows, the aforementioned device slides through the backrest and is adjustable, but the adjustment range is limited. When adult patients use it, they can adjust their posture to bring their head into contact with the pillow. However, because children have shorter upper bodies, their heads often only touch the edge of the pillow and cannot obtain stable support. Adult chairs rely more on patients to actively adapt to the positional relationship between the backrest and the pillow, which is particularly difficult for children. Therefore, special pediatric dental chairs must be equipped in the bed, which reduces the versatility of the equipment and increases costs.

[0005] A backrest protection device for dental chairs is proposed to address the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a backrest protection device for dental chairs, in order to solve the problems mentioned in the background art. The aforementioned devices and most existing chair pillows are slidably connected to the backrest and are adjustable, but the adjustment range is limited. When adult patients use them, they can adjust their posture to make their head touch the pillow. However, children, due to their shorter upper bodies, often can only touch the edge of the pillow with their heads and cannot obtain stable support. Adult chairs rely more on patients to actively adapt to the positional relationship between the backrest and the pillow, which is particularly difficult for children. Therefore, special children's dental chairs must be equipped in the bed, which reduces the versatility of the equipment and increases costs.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a backrest protection device for a dental chair, comprising a seat body, wherein the seat body includes a backrest;

[0008] A support assembly is provided above the backrest. The support assembly includes an adjustment slot in the middle of the backrest. A movable shell is installed in the adjustment slot. A support frame is fixedly connected to the bottom of the movable shell. A pillow support is fixedly connected to the top surface of the support frame. A reinforcing arch is installed on the back of the backrest.

[0009] The adjustment joint has a first groove and a second groove on its side wall, a stepped groove on its top edge, a Velcro fastener on the surface of the stepped groove, a support plate on the top surface of the Velcro fastener, a flexible pad fixedly connected to the top of the support plate, and a toothed rack fixedly connected inside the first groove.

[0010] The movable shell has symmetrically sliding movable blocks inside. A locking strip is fixedly connected to one side of each movable block, and a trapezoidal block is fixedly connected to the other side of each movable block. A frustum of a cone is provided between the two trapezoidal blocks. Side plates are symmetrically fixedly connected to the outer sides of each trapezoidal block. A first spring is fixedly connected between the two side plates on the same side. A bolt is threaded to the top of the movable shell, and one end of the bolt extending into the interior of the movable shell is rotatably connected to the frustum of a cone.

[0011] Preferably, the second groove is slidably connected to the movable shell, and the movable shell has symmetrically opened side windows on both sides. The locking strip passes through the side window and is engaged with the rack.

[0012] Preferably, the two ends of the reinforcing arch frame are connected to the backrest at the two sides of the adjustment seam, and the position of the pillow support is higher than the surface extension of the backrest.

[0013] Preferably, the surface curve of the flexible pad can conform to the back of the human body.

[0014] Preferably, the inclined surfaces of the two trapezoidal blocks are simultaneously attached to both sides of the inclined surface of the truncated cone block.

[0015] Preferably, the top surface of the movable shell is provided with a groove, and the bolt can be embedded in the groove.

[0016] Preferably, the support frame is movable inside the adjustment slot, and its width is narrower than the adjustment slot.

[0017] Compared with the prior art, the beneficial effects of this utility model are: this dental chair backrest protection device can not only meet the postoperative positioning needs of adults, but also be flexibly adjusted to a support mode for pediatric examinations or young children, significantly improving the comfort and functionality of the medical setting. The specific details are as follows:

[0018] 1. This support component achieves universal support for both adults and children through an innovative mechanical linkage system and modular design: its stepless sliding adjustment mechanism can precisely adapt to different heights and body types, combined with detachable long and short support plates and flexible pads, dynamically conforming to the physiological curvature of the spine; at the same time, it is equipped with a self-locking safety structure to ensure stability and supports quick disassembly and maintenance; it can not only meet the postoperative positioning needs of adults, but also be flexibly adjusted to support mode for pediatric examinations or young children, significantly improving the comfort and functionality of medical scenarios. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the top surface structure of the backrest;

[0021] Figure 3 This is a schematic diagram of the installation structure of the flexible cushion and the backrest;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the movable shell;

[0023] Figure 5 This is a schematic diagram of the installation structure of the trapezoidal block and the side plate;

[0024] Figure 6 This is a schematic diagram of a partial installation structure of the support plate and the backrest.

[0025] In the diagram: 1. Seat body; 101. Backrest; 2. Support assembly; 201. Adjustment gap; 202. Reinforced arch frame; 203. Moving shell; 204. Support frame; 205. Pillow support; 206. First groove; 207. Second groove; 208. Rack; 209. Stepped groove; 210. Velcro; 211. Support plate; 212. Flexible pad; 213. Moving block; 214. Locking strip; 215. Trapezoidal block; 216. Side plate; 217. First spring; 218. Bolt; 219. Frustum conical block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6 The present invention provides a technical solution: a backrest protection device for a dental chair, comprising a seat body 1, wherein the seat body 1 includes a backrest 101;

[0028] A support assembly 2 is provided above the backrest 101. The support assembly 2 includes an adjustment slot 201 opened in the middle of the backrest 101. A movable shell 203 is installed in the adjustment slot 201. A support frame 204 is fixedly connected to the bottom of the movable shell 203. A pillow support 205 is fixedly connected to the top surface of the support frame 204. A reinforcing arch 202 is installed on the back of the backrest 101. The reinforcing arch 202 is arched. The movable shell 203 and the support frame 204 are both located above the reinforcing arch 202.

[0029] The adjustment joint 201 has a first groove 206 and a second groove 207 on its side wall, a stepped groove 209 on its top edge, a Velcro 210 on the surface of the stepped groove 209, a support plate 211 on the top surface of the Velcro 210, a flexible pad 212 fixedly connected to the top of the support plate 211, and a rack 208 fixedly connected inside the first groove 206.

[0030] The movable shell 203 has a movable block 213 symmetrically sliding inside. A retaining strip 214 is fixedly connected to one side of the movable block 213, and a trapezoidal block 215 is fixedly connected to the other side of the movable block 213. A frustum conical block 219 is provided between the two trapezoidal blocks 215. Side plates 216 are symmetrically fixedly connected to the outer side of the trapezoidal blocks 215. A first spring 217 is fixedly connected between the two side plates 216 on the same side. A bolt 218 is threadedly connected to the top of the movable shell 203. One end of the bolt 218 that extends into the interior of the movable shell 203 is rotatably connected to the frustum conical block 219. The movable block 213 is slidably connected to the inner bottom surface of the movable shell 203.

[0031] The second groove 207 is slidably connected to the movable housing 203. Side windows are symmetrically opened on both sides of the movable housing 203. The locking strip 214 passes through the side window and is engaged with the rack 208. Both the locking strip 214 and the rack 208 are high-strength rust-proof metals.

[0032] The two ends of the reinforcing arch 202 are connected to the backrest 101 at the two sides of the adjustment seam 201, and the position of the pillow support 205 is higher than the surface extension of the backrest 101. The reinforcing arch 202 can increase the structural stability of the backrest 101 and prevent the adjustment seam 201 from destroying the structural stability of the backrest 101.

[0033] The surface curve of the flexible pad 212 can conform to the back of the human body; the support plate 211 has three sizes, which respectively cover all, half and a quarter of the adjustment seam 201, so that the flexible pad 212 can provide back support and protection for adults, teenagers and children respectively.

[0034] The inclined surfaces of the frustum of cones 219 simultaneously adhere to the inclined surfaces of two trapezoidal blocks 215; the compression of the frustum of cones 219 on the trapezoidal blocks 215 directly affects the distance between the trapezoidal blocks 215.

[0035] The top surface of the movable housing 203 is provided with a groove, into which the bolt 218 can be embedded; when the bolt 218 is in the groove, it will not obstruct the placement of the lifting plate 211.

[0036] The support frame 204 can move inside the adjustment gap 201, and its width is narrower than the adjustment gap 201; the support frame 204 can move inside the adjustment gap 201 during the process of adjusting and moving the pillow support 205.

[0037] Working principle: Before using this dental chair backrest protection device, it is necessary to check the overall condition of the device to ensure it can function properly. Figure 1 - Figure 6 As shown, when an adult patient lies directly on the seat body 1, their head can rest on the pillow support 205, and at this time, the support plate 211 is attached to the Velcro 210. The flexible pad 212 provides stable and comfortable support for the patient's back, and the patient will not feel uncomfortable due to the adjustment seam 201. When the patient is a child, the support plate 211 can be removed by tearing, and then the bolt 218 can be rotated to move the truncated cone block 219 upward. At this time, the first spring 217 can pass through the side plate. 216 Pull the two moving blocks 213 to move horizontally closer, thereby causing the locking strip 214 to move in the side window and disengage from the rack 208, thereby allowing the moving shell 203 to drive the support frame 204 and the pillow support 205 to slide a long distance on the seat body 1 until the pillow support 205 moves to the middle or even the bottom of the seat body 1, so that the backrest 101 can be used not only for adults, but also for shorter children, providing suitable support and protection for the back and head of children;

[0038] When the movable shell 203 moves to a lower position of the seat body 1, a shorter support plate 211 can be selected and placed in the step groove 209 to provide basic support for the child's back.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A backrest protection device for a dental chair, comprising a seat body (1), wherein the seat body (1) includes a backrest (101); Its features are, Also includes: A support assembly (2) is provided above the backrest (101). The support assembly (2) includes an adjustment slot (201) opened in the middle of the backrest (101). A movable shell (203) is installed in the adjustment slot (201). A support frame (204) is fixedly connected to the bottom of the movable shell (203). A pillow support (205) is fixedly connected to the top surface of the support frame (204). A reinforcing arch frame (202) is installed on the back of the backrest (101). The adjustment slot (201) has a first groove (206) and a second groove (207) on its sidewall. The top edge of the adjustment slot (201) has a stepped groove (209). The surface of the stepped groove (209) is attached with Velcro (210). The top surface of the Velcro (210) is attached with a support plate (211). The top of the support plate (211) is fixedly connected with a flexible pad (212). The inside of the first groove (206) is fixedly connected with a rack (208). The movable shell (203) has symmetrically sliding movable blocks (213) inside. A retaining strip (214) is fixedly connected to one side of the movable block (213), and a trapezoidal block (215) is fixedly connected to the other side of the movable block (213). A frustum conical block (219) is provided between the two trapezoidal blocks (215). Side plates (216) are symmetrically fixedly connected to the outer side of the trapezoidal blocks (215). A first spring (217) is fixedly connected between the two side plates (216) on the same side. A bolt (218) is threadedly connected to the top of the movable shell (203). One end of the bolt (218) extending into the interior of the movable shell (203) is rotatably connected to the frustum conical block (219).

2. The dental chair backrest protection device according to claim 1, characterized in that: The second groove (207) is slidably connected to the movable shell (203). The movable shell (203) has symmetrical side windows on both sides. The locking strip (214) passes through the side window and is engaged with the rack (208).

3. The dental chair backrest protection device according to claim 1, characterized in that: The two ends of the reinforced arch frame (202) are connected to the backrest (101) at the two sides of the adjustment seam (201), and the position of the pillow support (205) is higher than the surface extension of the backrest (101).

4. A dental chair backrest protection device according to claim 1, characterized in that: The surface curve of the flexible pad (212) can conform to the back of the human body.

5. A dental chair backrest protection device according to claim 1, characterized in that: The inclined surfaces of the truncated cone block (219) are simultaneously attached to the inclined surfaces of two trapezoidal blocks (215).

6. A dental chair backrest protection device according to claim 1, characterized in that: The top surface of the movable shell (203) is provided with a groove, and the bolt (218) can be embedded in the groove.

7. A dental chair backrest protection device according to claim 1, characterized in that: The lifting frame (204) can move inside the adjusting joint (201), and its width is narrower than the adjusting joint (201).

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