Adjustable dental chair backrest and dental chair

Abstract

The utility model discloses an adjustable dental chair backrest and a dental chair. The adjustable dental chair backrest comprises a bracket, a backrest plate and a back cushion, the back cushion is mounted on the backrest plate; a plurality of clamping grooves are formed in the bottom of the backrest plate; the plurality of clamping grooves are arranged along a first direction; an elastic clamping column assembly is mounted on the bracket; the clamping column assembly protrudes towards one side of the backrest plate; when the backrest plate is installed on the support, the clamping column assembly is clamped into the clamping groove, so that the backrest plate cannot move up and down, and when the extending position of the backrest plate needs to be adjusted, the elastic clamping column assembly is moved away from the clamping groove, and the extending position is adjusted by moving the backrest plate up and down. The stretching amount of the backrest can be adjusted in a multi-stage mode, a doctor and a patient can adjust the position of the backrest conveniently, and therefore the adjustable backrest is suitable for patients of different heights, and the patients can obtain good comfort when receiving treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an adjustable dental chair backrest and a dental chair. Background Art

[0002] Dental chairs are essential equipment for dental treatment, allowing patients to recline for treatment. However, due to the varying heights of different patients, the backrest support varies. Taller patients often require a longer backrest. Existing dental chair backrests are generally fixed and cannot be adjusted, thus failing to meet the needs of different patients. Some existing dental chairs use electric motors for adjustment, but these are more expensive and thus not widely adopted. Utility Model Content

[0003] The purpose of the utility model is to provide an adjustable dental chair backrest and a dental chair, which can adjust the extension of the backrest in multiple stages, making it convenient for doctors and patients to adjust the position of the backrest, thereby adapting to patients of different heights and allowing patients to obtain better comfort when receiving treatment.

[0004] The utility model is achieved through the following technical solutions:

[0005] An adjustable dental chair backrest comprises a bracket, a backrest board and a cushion; the cushion is mounted on the backrest board; the characteristics include: a plurality of slots are provided at the bottom of the backrest board; the plurality of slots are arranged along a first direction; an elastic clamping column assembly is mounted on the bracket; the clamping column assembly protrudes toward one side of the backrest board; when the backrest board is mounted on the bracket, the clamping column assembly is clamped into the slot, so that the backrest board cannot move up and down, and when the extended position of the backrest board needs to be adjusted, the elastic clamping column assembly is moved away from the slot by adjusting the backrest board, and the extended position is adjusted by moving the backrest board up and down.

[0006] As a further improvement to the technical solution of the present invention, a first mating plate is fixedly installed at the bottom of the backrest plate; a long strip-shaped through slot is provided on the first mating plate; the length direction of the through slot is the same as the arrangement direction of the card slot; a mounting nail is fixed on the bracket, and the mounting nail slides with the through slot.

[0007] As a further improvement to the technical solution of the present invention, a long avoidance groove is provided on the first matching plate; a clamping strip is installed at the bottom of the backrest plate; the clamping strip is located in the avoidance groove; and the clamping slot is provided on the clamping strip.

[0008] As a further improvement to the technical solution of the present invention, a base is installed on the bracket; a groove is provided on one side of the base; a through hole is provided on the side wall of the base; the through hole is connected to the groove, and the column assembly is installed on the through hole and the groove.

[0009] As a further improvement of the technical solution of the present utility model, the clamping column assembly includes a clamping column, a spring, a pressing column and a clamping platform; the clamping platform is fixedly mounted on the base, and a portion thereof protrudes into the groove, and a through hole is provided in the portion extending into the groove; the pressing column passes through the through hole and the through hole in sequence and is connected to the clamping column; the clamping column protrudes from the groove; the spring is sleeved on the pressing column and is located between the clamping platform and the flange; or the spring is located between the clamping column and the clamping platform.

[0010] As a further improvement to the technical solution of the present invention, the pressing column is provided with a flange on one side of the through hole; the outer diameter of the flange is larger than the inner diameter of the groove.

[0011] As a further improvement to the technical solution of the present invention, a second mating plate is installed on the base; the surface of the second mating plate does not have a protrusion, so that the resistance is reduced when the second mating plate slides with the first mating plate, and at this time, the clamping column protrudes from the second mating plate.

[0012] As a further improvement to the technical solution of the present invention, the surface of the base is provided with a protruding ring edge to form a space for accommodating the second mating plate; after the second mating plate is installed on the base, the top surface of the second mating plate is not lower than the ring edge.

[0013] As a further improvement to the technical solution of the present invention, both the first matching plate and the second matching plate are made of plastic.

[0014] As a further improvement to the technical solution of the present utility model, the clip is made of metal.

[0015] As a further improvement of the technical solution of the present invention, a dental chair includes a seat cushion, a headrest and an adjustable dental chair backrest, wherein one end of the adjustable dental chair backrest is connected to the seat cushion, and the other end is connected to the headrest.

[0016] Compared with the prior art, the present invention provides an adjustable dental chair backrest with the following beneficial effects:

[0017] When the backrest of the present invention is installed on the bracket, the clamping column assembly is clamped into the clamping slot, so that the backrest cannot move up and down. When the extended position of the backrest needs to be adjusted, the elastic clamping column assembly is moved out of the clamping slot by adjusting the elasticity, and the extended position of the backrest is adjusted by moving the backrest up and down. The present invention can adjust the extension of the backrest, making it convenient for doctors and patients to adjust the position of the backrest, adapting to patients of different heights, and allowing patients to obtain better comfort during treatment. The present invention has a simple structure, convenient backrest adjustment, simple manufacturing, low cost, low probability of failure, and easy maintenance, making it suitable for widespread promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an adjustable dental chair backrest according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of an adjustable dental chair backrest according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic cross-sectional view of an adjustable dental chair backrest according to an embodiment of the present invention;

[0021] Figure 4 yes Figure 3 A schematic diagram of the structure at center A;

[0022] Figure 5 This is a schematic diagram of the exploded structure of the second matching plate and base, as well as the clamping column assembly in an embodiment of the present utility model;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the pressing column in an embodiment of the utility model.

[0024] In the figure: 1- bracket; 2- backrest plate; 3- cushion; 4- clamping column assembly; 5- first matching plate; 6- clamping strip; 7- base; 8- second matching plate; 21- clamping slot; 41- clamping column; 42- spring; 43- pressing column; 44- clamping platform; 51- through slot; 52- avoidance slot; 71- groove; 72- through hole; 73- ring edge; 431- flange. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In this utility model, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one such feature. Furthermore, the technical solutions of various embodiments may be combined with each other, but only on the basis that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions contradicts or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] like Figures 1 to 5 As shown, an adjustable dental chair backrest comprises a bracket 1, a backrest board 2 and a cushion 3; the cushion 3 is installed on the backrest board 2; wherein: a plurality of slots 21 are provided at the bottom of the backrest board 2; a plurality of the slots 21 are arranged along a first direction; it should be noted that the first direction is from the seat cushion toward the headrest; an elastic clamping column assembly 4 is installed on the bracket 1; the clamping column assembly 4 protrudes toward one side of the backrest board 2; when the backrest board 2 is installed on the bracket 1, the clamping column assembly 4 is clamped into the slot 21, so that the backrest board 2 cannot move up and down. When the extended position of the backrest needs to be adjusted, the elastic clamping column assembly 4 is removed from the slot 21 by adjusting the elasticity, and the extended position of the backrest is adjusted by moving the backrest board 2 up and down. The utility model can adjust the extension of the backrest, which is convenient for doctors and patients to adjust the position of the backrest and adapt to patients of different heights, so that patients can get better comfort when receiving treatment. The utility model has a simple structure, convenient backrest adjustment, simple manufacturing, low cost, low probability of failure, and easy maintenance, and is suitable for wide promotion and application.

[0030] Specifically, in this embodiment, a first matching plate 5 is fixedly installed at the bottom of the backrest board 2; a long strip-shaped through groove 51 is provided on the first matching plate 5; the through groove 51 is arranged in the same direction as the card slot 21; the mounting nail passes through the backrest board 2 and the first matching plate 5 and is then fixedly connected to the bracket 1. When the position of the backrest board 2 needs to be moved, it can slide along the mounting nail body to change the position of the backrest board 2.

[0031] Specifically, in this embodiment, a long avoidance groove 52 is provided on the first matching plate 5; a clamping strip 6 is installed at the bottom of the backrest plate 2; the clamping strip 6 is located in the avoidance groove 52; the clamping slot 21 is provided on the clamping strip 6, and a total of 5 clamping slots 21 are provided on the clamping strip 6, so the clamping column assembly 4 cooperates with any one of the five clamping slots 21 to realize the five-level adjustment of the backrest.

[0032] Specifically, in this embodiment, the bracket 1 is mounted with a base 7 and a second mating plate 8; a groove 71 is formed on one side of the base 7; a through hole 72 is formed on the side wall of the base 7; and the through hole 72 is connected to the groove 71. In this embodiment, the mounting pins are fixedly connected to the base 7.

[0033] Reference Figures 4 to 6 Specifically, in the present embodiment, the clamping column assembly 4 includes a clamping column 41, a spring 42, a pressing column 43 and a clamping platform 44; the clamping platform 44 is fixedly mounted on the base 7, and a portion thereof protrudes and extends into the groove 71, and a through hole is provided in the portion extending into the groove 71; the pressing column 43 passes through the through hole 72 and the through hole in sequence and is connected to the clamping column 41; the clamping column 41 protrudes from the groove 71; the pressing column 43 is provided with a flange 413 on one side of the through hole 72; the outer diameter of the flange 431 is larger than the inner diameter of the groove 71; the flange 431 is the pressing part of the pressing column 43; the spring 42 is sleeved on the pressing column 43 and is located between the clamping platform 44 and the flange; or the spring 42 is located between the clamping column 41 and the clamping platform 44. It should be noted that when the extension of the backrest needs to be adjusted, the flange is pressed toward the groove 71, and the clamping column 41 moves away from the through hole 72, thereby exiting the clamping slot 21. At this time, the spring 42 is compressed. When the external force is removed, the spring 42 recovers and drives the clamping column 41 to enter the clamping slot 21 again, thereby adjusting the extension of the backrest, making it convenient for doctors and patients to adjust the position of the backrest, adapting to patients of different heights, and allowing patients to obtain better comfort when receiving treatment.

[0034] Specifically, in this embodiment, the second mating plate 8 is installed on the base 7; the surface of the second mating plate 8 does not have a protrusion, so that the resistance of the second mating plate 8 and the first mating plate 5 when sliding together is reduced and it is not easy to get stuck. At this time, the clamping column 41 protrudes from the second mating plate 8.

[0035] Specifically, in this embodiment, a protruding ring edge 73 is provided on the surface of the base 7 to form a space for accommodating the second mating plate 8; after the second mating plate 8 is installed on the base 7, the top surface of the second mating plate 8 is not lower than the ring edge 73.

[0036] Specifically, in this embodiment, the first mating plate 5 and the second mating plate 8 are both made of plastic. It should be noted that the first mating plate 5 and the second mating plate 8 are both made of plastic, which is simple to manufacture and low in cost, effectively reducing the production cost of the backrest and further reducing the overall cost of the dental chair, making it suitable for widespread promotion and application.

[0037] Specifically, in this embodiment, when the position of the backrest plate 2 is adjusted, the first matching plate 5 and the second matching plate 8 slide relatively.

[0038] Specifically, in this embodiment, the clamping strip 6 is made of metal material, which is simple to manufacture, low in cost, has a low probability of failure, is easy to maintain, and is suitable for wide promotion and application.

[0039] Specifically, in another embodiment, a dental chair includes a seat cushion, a headrest, and an adjustable dental chair backrest, wherein one end of the adjustable dental chair backrest is connected to the seat cushion, and the other end is connected to the headrest.

[0040] The above is a detailed introduction to the technical solutions provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. An adjustable dental chair backrest, comprising a bracket, a backrest plate, and a cushion; the cushion is mounted on the backrest plate; and is characterized in that: A plurality of slots are provided at the bottom of the backrest board; the plurality of slots are arranged along a first direction; an elastic post assembly is installed on the bracket; the post assembly protrudes toward one side of the backrest board; when the backrest board is installed on the bracket, the post assembly is stuck in the slot, so that the backrest board cannot move up and down. When the extended position of the backrest board needs to be adjusted, the elastic post assembly is moved away from the slot by adjusting the backrest board, and the extended position is adjusted by moving the backrest board up and down.

2. The adjustable dental chair backrest according to claim 1, characterized in that: A first matching plate is fixedly installed on the bottom of the backrest plate; a long strip-shaped through slot is provided on the first matching plate; the length direction of the through slot is the same as the arrangement direction of the card slot; a mounting nail is fixed on the bracket, and the mounting nail is slidably matched with the through slot.

3. The adjustable dental chair backrest according to claim 2, characterized in that: The first matching plate is provided with a long strip-shaped avoidance groove; the backrest plate is provided with a clamping strip at the bottom; the clamping strip is located in the avoidance groove; and the clamping slot is provided on the clamping strip.

4. The adjustable dental chair backrest according to claim 3, characterized in that: A base is mounted on the bracket; a groove is formed on one side of the base; a through hole is formed on a side wall of the base; the through hole is connected to the groove, and the column assembly is mounted on the through hole and the groove.

5. The adjustable dental chair backrest according to claim 4, characterized in that: The clamping column assembly includes a clamping column, a spring, a pressing column and a clamping platform; the clamping platform is fixedly installed on the base, and a part thereof protrudes into the groove, and a through hole is provided in the part extending into the groove; the pressing column passes through the through hole and the through hole in sequence and is connected to the clamping column; the clamping column protrudes from the groove; the spring is sleeved on the pressing column and is located between the clamping platform and the flange; or the spring is located between the clamping column and the clamping platform.

6. The adjustable dental chair backrest according to claim 5, characterized in that: The pressing column is located at one side of the through hole and the flange is provided; the outer diameter of the flange is larger than the inner diameter of the groove.

7. The adjustable dental chair backrest according to claim 4, characterized in that: A second mating plate is mounted on the base; the surface of the second mating plate has no protrusions, so that the resistance is reduced when the second mating plate and the first mating plate slide together, and at this time, the clamping column protrudes from the second mating plate.

8. The adjustable dental chair backrest according to claim 7, characterized in that: The surface of the base is provided with a protruding ring edge to form a space for accommodating the second matching plate; after the second matching plate is installed on the base, the top surface of the second matching plate is not lower than the ring edge.

9. The adjustable dental chair backrest according to claim 7, characterized in that: The first matching plate and the second matching plate are both made of plastic; the clip strip is made of metal.

10. A dental chair, characterized by: It comprises a seat cushion, a headrest and the adjustable dental chair backrest according to any one of claims 1 to 9, wherein one end of the adjustable dental chair backrest is connected to the seat cushion, and the other end is connected to the headrest.

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