Rotatable headrest
The rotating headrest design solves the problem that dental chair headrests cannot accommodate both adults and children at the same time, achieving flexible height adjustment and safety protection while reducing structural complexity and cost.
Patent Information
- Application Number
- CN202423022240.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing dental chair headrests cannot accommodate both adults and children, resulting in complex and costly structures that are difficult to effectively prevent the spread of aerosols caused by saliva and blood splatter.
A rotatable headrest was designed, which allows for angle adjustment of the headrest body through a rotation adjustment component and a locking component to accommodate people of different heights. It includes the combined use of a rotating base, a rotating shaft, a locking component, and a support plate.
It enables flexible adjustment of headrest height to suit different groups of people, has a simple structure and low cost, and improves the efficiency and safety of use.
Smart Images
Figure CN223715979U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dental chair equipment technical field especially is related to a rotatable headrest. BACKGROUND
[0002] In stomatological diagnosis and treatment operation, aerosol is easily formed due to spatter of saliva and blood of patients, and microbial aerosol is an important transmission route of many infectious diseases. Therefore, in order to prevent and control the epidemic situation, not only stomatological doctors and nurses need to wear strict protective clothing, but also corresponding protective equipment should be set around the patient's oral cavity to prevent aerosol and spatter from splashing out and causing environmental pollution. Due to the difference in height between adults and children, the position of the headrest can generally only be adjusted in front and back pitch, and children are difficult to pillow on the headrest. The existing dental chair simultaneously meets the use of children and adults by changing the length of the treatment chair, which is high in cost and complex in structure. SUMMARY
[0003] In order to solve the technical defects in the background art, the purpose of the utility model is to provide a rotatable headrest.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A rotatable headrest comprises a headrest body, a rotation adjusting assembly, a locking assembly and a support plate. One end of the support plate is fixedly connected with the back plate of a dental chair, and the other end of the support plate is hingedly connected with one end of the locking assembly. The rotation adjusting device comprises a rotation seat and a rotation shaft. The rotation seat is pivotally connected with the other end of the locking assembly. One end of the rotation shaft is movably connected with the rotation seat, and the other end of the rotation shaft is connected with the headrest body. The length from one end of the headrest body to the other end of the rotation shaft is less than the length from the other end of the headrest body to the other end of the rotation shaft. The locking assembly is used to fix the headrest body on the support plate after the headrest body is rotated to a set angle.
[0006] By adopting the above technical scheme, the headrest body can be rotated to a set angle by the rotation shaft around the rotation seat. Since the distances from the two ends of the headrest body to the center of the rotation shaft are different, the height of the rotated headrest body relative to the back plate is adjusted to adapt to children or adults. The use is convenient, the adjustment efficiency is higher, the structure is simple, and the cost is lower.
[0007] Further, the headrest body is internally provided with a containing cavity. The rotation adjusting assembly further comprises a rotating block, a first limiting column and a second limiting column. The other end of the rotating shaft penetrates through the headrest body and is located in the containing cavity, and the rotating block is fixed to the other end of the rotating shaft. The first limiting column and the second limiting column are arranged on the side of the rotating block along the length direction of the headrest body, and are used for limiting the rotation angle of the rotating block, improving the rotation adjusting efficiency of the headrest body, and realizing the quick switching of two position states to adapt to different people. When the rotating block abuts against the first limiting column, the distance from the center of the headrest body to the back plate is the smallest, so that children can easily rest on the headrest body. When the rotating block abuts against the second limiting column, the distance from the center of the headrest body to the back plate is the largest, and the headrest body is suitable for adults to rest on.
[0008] Further, the first limiting column and the second limiting column are provided in a cylindrical structure, and the rotating block comprises a circular rotating part and a protruding part protruding from the rotating part. The center of the rotating part is rotationally connected to the other end of the rotating shaft, and the protruding part is arranged between the first limiting column and the second limiting column. The structure is simple, the adjustment is convenient, and the cost is low.
[0009] Further, the rotating seat comprises a mounting plate, two lugs and a rotating shaft. One end of the rotating shaft is fixedly connected with the mounting plate, both ends of the mounting plate away from one side of the headrest body are provided with one lug respectively, and the lug is provided with a mounting hole. The rotating shaft is arranged between the two lugs, and the end portion of the rotating shaft is fixedly arranged in the mounting hole. The structure is compact, the space occupied is small, and the rotation is convenient. The other end of the locking assembly is rotationally connected with the rotating shaft, so as to conveniently adjust the pitch angle of the headrest body and further adjust the height of the headrest body.
[0010] Further, the diameter of the rotating shaft is smaller than the inner diameter of the mounting hole, so as to improve the rotation adjusting efficiency.
[0011] Further, the mounting plate and the two lugs are integrally formed, and the stability is higher. One end of the lug facing the headrest body is provided with a first threaded hole in communication with the mounting hole, both ends of the rotating shaft are provided with second threaded holes, and the rotating shaft is fixedly connected with the mounting plate and the lug through screw thread connection in the first threaded hole and the second threaded hole, so that the mounting and dismounting are more convenient.
[0012] Further, the locking assembly comprises a knob and an elastic member, one end of the elastic member is sleeved on the other end of the support plate, the other end of the elastic member is sleeved on the rotating shaft, the knob is in transmission connection with the elastic member, and the knob is used for locking or opening the elastic member to fix the headrest body, the adjusting efficiency and the pitching swing range are improved, and the compatibility is higher.
[0013] In summary, the headrest body can be rotated by a rotating shaft around a rotating seat by a set angle, the center distance from the end of the headrest body to the rotating shaft is different, which is equivalent to adjusting the height of the rotated headrest body relative to the back plate to adapt to children or adults, the adjustment is convenient, the adjusting efficiency is higher, the structure is simple, and the cost is lower.
[0014] The headrest body can be rotated by a rotating shaft around a rotating seat by a set angle, the center distance from the end of the headrest body to the rotating shaft is different, which is equivalent to adjusting the height of the rotated headrest body relative to the back plate to adapt to children or adults, the adjustment is convenient, the adjusting efficiency is higher, the structure is simple, and the cost is lower. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a structural schematic view of an embodiment of the rotatable headrest of the utility model.
[0016] Figure 2 is a structural schematic view of another view of an embodiment of the rotatable headrest of the utility model.
[0017] Figure 3 is a structural schematic view of an embodiment of the internal structure of the headrest body of the rotatable headrest of the utility model.
[0018] Figure 4 is a front view of an embodiment of the internal structure of the headrest body of the rotatable headrest of the utility model.
[0019] Figure 5 is Figure 4 sectional view of A-A.
[0020] Explanation of reference numerals in the drawings:
[0021] 1, rotatable headrest; 2, headrest body; 21, first shell; 22, second shell; 23, accommodating cavity; 24, through hole; 3, rotating adjusting assembly; 31, rotating seat; 311, mounting plate; 312, lug; 313, rotating shaft; 3131, second threaded hole; 314, screw; 32, rotating shaft; 33, rotating block; 331, rotating part; 332, protruding part; 34, first limiting column; 35, second limiting column; 4, locking assembly; 41, knob; 42, elastic member; 5, support plate. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all the other embodiments obtained by those skilled in the art belong to the scope of protection of the present utility model.
[0023] Those skilled in the art should understand that, in the disclosure of the present utility model, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the present utility model.
[0024] In the description of the present utility model, if there is a word such as "several" or the like, the meaning is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are not included in the number, above, below, within, etc. are understood to include the number. If the first, second, third is described, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0025] The following will be described in detail with reference to the drawings of the embodiments of the present utility model. Figures 1-5 The embodiments of the present utility model will be further described in detail.
[0026] A rotatable headrest 1, as shown in Figure 1 , Figure 2 , Figure 3 It comprises a headrest body 2, a rotation adjusting assembly 3, a locking assembly 4 and a support plate 5. One end of the support plate 5 is fixedly connected with the back plate of the dental chair, and the other end of the support plate 5 is hingedly connected with one end of the locking assembly 4. The rotation adjusting device comprises a rotation seat 31 and a rotation shaft 32; the rotation seat 31 is pivotally connected with the other end of the locking assembly 4, one end of the rotation shaft 32 is movably connected with the rotation seat 31, and the other end of the rotation shaft 32 is connected with the headrest body 2. The length from one end of the headrest body 2 to the other end of the rotation shaft 32 is less than the length from the other end of the headrest body 2 to the other end of the rotation shaft 32, and the locking assembly 4 is used to fix the headrest body 2 on the support plate 5 after the headrest body 2 is rotated to a set angle.
[0027] The headrest body 2 can rotate a set angle around the rotating seat 31 through the rotating shaft 32. Since the distance from the end of the headrest body 2 to the center of the rotating shaft 32 is different, the height of the headrest body 2 after rotation is adjusted to adapt to children or adults, which is convenient to adjust, has higher adjustment efficiency, simple structure and lower cost.
[0028] In the embodiment, please refer to Figure 1 , Figure 3 , Figure 4 , the headrest body 2 is internally provided with a containing cavity 23. The rotating adjusting assembly 3 further comprises a rotating block 33, a first limiting column 34 and a second limiting column 35. The other end of the rotating shaft 32 penetrates through the headrest body 2 and is located in the containing cavity 23, and the rotating block 33 is fixed to the other end of the rotating shaft 32. The first limiting column 34 and the second limiting column 35 are arranged on the side of the rotating block 33 along the length direction of the headrest body 2, and are used for limiting the rotating angle of the rotating block 33, improving the rotating adjusting efficiency of the headrest body 2, and realizing the quick switching of two position states to adapt to different people. When the rotating block 33 abuts against the first limiting column 34, the distance from the center of the headrest body 2 to the back plate is the smallest, so that children can easily lie on the headrest body 2. When the rotating block 33 abuts against the second limiting column 35, the distance from the center of the headrest body 2 to the back plate is the largest, which is suitable for adults to lie on the headrest body 2.
[0029] In some embodiments, the first limiting column 34 and the second limiting column 35 are provided in a cylindrical structure, and the rotating block 33 comprises a circular rotating part 331 and a protruding part 332 protruding from the rotating part 331. The center of the rotating part 331 is rotatably connected to the other end of the rotating shaft 32, and the protruding part 332 is arranged between the first limiting column 34 and the second limiting column 35, which has simple structure, convenient adjustment and lower cost. The first limiting column 34 and the second limiting column 35 are arranged on the same side of the protruding part 332 and are arranged in an up-down manner, so that the headrest body 2 can be rotated by 180 degrees clockwise or counterclockwise.
[0030] In some embodiments, please refer to Figure 1 , Figure 4 , Figure 5 , the rotating seat 31 comprises a mounting plate 311, two lugs 312 and a rotating shaft 313. One end of the rotating shaft 32 is fixedly connected to the mounting plate 311, and the two ends of the mounting plate 311 away from the side of the headrest body 2 are each provided with a lug 312, and the lug 312 is provided with a mounting hole. The rotating shaft 313 is arranged between the two lugs 312, and the end of the rotating shaft 313 is fixedly arranged in the mounting hole, which has compact structure, small space occupation and convenient rotation. The other end of the locking assembly 4 is rotatably connected to the rotating shaft 313, which is convenient to adjust the pitch angle of the headrest body 2 and can further adjust the height of the headrest body 2.
[0031] The diameter of the rotating shaft 313 is smaller than the inner diameter of the mounting hole, so that the rotating shaft 313 can rotate freely, the rotating range is improved, and the rotating adjustment efficiency is improved.
[0032] In some embodiments, the mounting plate 311 is integrally formed with the two lugs 312, and the stability is higher. The end of the lug 312 facing the headrest body 2 is provided with a first threaded hole communicated with the mounting hole, and the two ends of the rotating shaft 313 are provided with second threaded holes 3131. The rotating shaft 313 is fixedly connected with the mounting plate 311 and the lug 312 through the screws 314 and the first threaded hole and the second threaded hole 3131, so that the mounting and dismounting are more convenient.
[0033] Specifically, the headrest body 2 includes a first shell 21 and a second shell 22, and the first shell 21 and the second shell 22 enclose a containing cavity 23. The first shell 21 is used for a user's pillow, and the second shell 22 is connected with the rotating shaft 32. The second shell 22 is provided with through holes 24. The rotating shaft 32 is fixed with the mounting plate 311 and the rotating block 33 respectively. Then, the rotating shaft 313 is inserted into the lug 312, the first threaded hole and the second threaded hole 3131 are respectively aligned with the corresponding through holes 24, and then the screws 314 are screwed into the through holes 24 on the inner side of the second shell 22 to fix the lug 312 and the rotating shaft 313. Finally, the first shell 21 and the second shell 22 are mounted and fixed.
[0034] In some embodiments, please refer to Figure 1 , Figure 5 The locking assembly 4 includes a knob 41 and an elastic member 42. One end of the elastic member 42 is sleeved on the other end of the supporting plate 5, and the other end of the elastic member 42 is sleeved on the rotating shaft 313. The knob 41 is in transmission connection with the elastic member 42. The forward and reverse rotation of the knob 41 is used to lock or open the elastic member 42 to fix the headrest body 2, improve the adjustment efficiency and the range of pitching and swinging, and has higher compatibility.
[0035] The other end of the supporting plate 5 is provided with a rotating rod, and the elastic member 42 is sleeved on the rotating rod, so that the angle can be adjusted conveniently. After the knob 41 is loosened, the headrest body 2 is manually pressed to adjust the position of the headrest body 2 according to the actual situation of the height of the user, so that the user can lie more comfortably on the headrest body 2. After the adjustment is completed, the elastic member 42 is tightened by being reversed, so that the two ends of the elastic member 42 are tightened to tighten the rotating shaft 313 and the rotating rod. The end of the rotating shaft 313 abuts against the inside of the mounting hole through the tension of the elastic member 42, so as to fix the rotating seat 31 and the headrest body 2. The adjustment is convenient, and the compatibility is higher.
[0036] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A rotatable headrest, characterized by, The headrest body (2) is internally provided with a containing cavity (23); the rotation adjusting assembly (3) further comprises a rotating block (33), a first limiting column (34) and a second limiting column (35); the other end of the rotating shaft (32) penetrates through the headrest body (2) and is located in the containing cavity (23), and the rotating block (33) is fixed to the other end of the rotating shaft (32); the first limiting column (34) and the second limiting column (35) are arranged on the side of the rotating block (33) along the length direction of the headrest body (2) and are spaced apart, and the first limiting column (34) and the second limiting column (35) are used for limiting the rotation angle of the rotating block (33); when the rotating block (33) abuts against the first limiting column (34), the distance from the center of the headrest body (2) to the back plate is the smallest, and when the rotating block (33) abuts against the second limiting column (35), the distance from the center of the headrest body (2) to the back plate is the largest.
2. The rotatable headrest of claim 1, wherein, The first limiting column (34) and the second limiting column (35) are provided in a cylindrical structure, the rotating block (33) comprises a circular rotating part (331) and a protruding part (332) which is arranged to protrude from the rotating part (331); the center of the rotating part (331) is rotationally connected to the other end of the rotating shaft (32), and the protruding part (332) is arranged between the first limiting column (34) and the second limiting column (35).
3. The rotatable headrest of claim 2, wherein, The rotating seat (31) comprises a mounting plate (311), two lugs (312) and a rotating shaft (313); one end of the rotating shaft (32) is fixedly connected to the mounting plate (311), both ends of the mounting plate (311) away from one side of the headrest body (2) are each provided with one lug (312), and the lug (312) is provided with a mounting hole; the rotating shaft (313) is arranged between the two lugs (312), and the end of the rotating shaft (313) is fixedly arranged in the mounting hole; the other end of the locking assembly (4) is rotationally connected to the rotating shaft (313).
4. The rotatable headrest of claim 1, wherein, 5. The rotatable headrest of claim 4, wherein, The diameter of the rotating shaft (313) is less than the inner diameter of the mounting hole.
6. The rotatable headrest of claim 4, wherein, The mounting plate (311) is integrally arranged with the two lugs (312); one end of the lug (312) facing the headrest body (2) is provided with a first threaded hole in communication with the mounting hole, both ends of the rotating shaft (313) are provided with a second threaded hole (3131), and the rotating shaft (313) is fixedly connected with the mounting plate (311) and the lug (312) through screwing (314) in the first threaded hole and the second threaded hole (3131).
7. The rotatable headrest of claim 4, wherein, The locking assembly (4) comprises a knob (41) and an elastic member (42); one end of the elastic member (42) is sleeved on the other end of the supporting plate (5), the other end of the elastic member (42) is sleeved on the rotating shaft (313), the knob (41) is in transmission connection with the elastic member (42), and the forward and reverse rotation of the knob (41) is used for locking or opening the elastic member (42) to fix the headrest body (2).