Adjustable positioning head support

Abstract

The invention discloses an adjustable positioning head support which comprises a base, a head support supporting rod with one end movably arranged on the base, a head support body connected with one end of the head support supporting rod, and a first locking mechanism used for adjusting and locking the position of the head support supporting rod relative to the base so as to adjust the height of the head support body. The base is provided with head lateral clamping and positioning assemblies located on the two sides of the head support body, the head lateral clamping and positioning assemblies are used for adjusting the width to position the head, and the head lateral clamping and positioning assemblies are provided with second locking mechanisms. The two-way threaded rod is rotated to drive the two square sleeves with the side plates to synchronously and reversely move in the rectangular opening of the base, so that the distance between the two side plates is adjusted, and lateral clamping and positioning of the head are achieved.

Description

Technical Field

[0001] This invention relates to the field of headrest device technology, and more specifically to an adjustable positioning headrest. Background Technology

[0002] In daily elderly and pathological care, or in medical examinations and rehabilitation care, headrest devices are important auxiliary structures used to support and position the human head. Their positioning stability and adjustment flexibility directly affect their practicality. Existing headrest height adjustment methods mostly employ either bolt-pressing locking or toothed engagement limiting. Bolt-pressing locking (such as the technology disclosed in CN220256714 U) requires manually tightening multiple bolts to lock and unlock, which is cumbersome, inefficient, and prone to loosening after long-term use, severely affecting positioning stability. While toothed engagement limiting eliminates the need for additional knobs, it only provides basic limiting with insufficient strength and poor adaptability.

[0003] Meanwhile, most existing headrests only provide simple head support and lack effective lateral clamping and positioning structures. For example, CN 220256714 U only provides head and neck support through a neck brace and headrest, and the headrest disclosed in CN202321870677.1 only focuses on angle and height adjustment, neither of which has a lateral clamping component. This makes it easy for the head to shift during use and fails to meet some positioning requirements. A few headrests with lateral positioning functions have inconvenient clamping width adjustment and cannot adapt to the vertical height requirements of different head contours. They are prone to causing pressure on the head when clamped, resulting in poor comfort.

[0004] Therefore, the existing headrest adjustment functions are relatively fragmented, with height and lateral adjustments being independent of each other. The operation steps are cumbersome, and there is a lack of unified adjustment locking, which is not conducive to quick operation. There is a need for an adjustable positioning headrest that allows for easy adjustment and multi-angle adjustment for practical daily use. Summary of the Invention

[0005] This invention provides an adjustable positioning headrest, comprising:

[0006] Base;

[0007] A head support rod, one end of which is movably mounted on the base;

[0008] The headrest body is connected to one end of the headrest support rod;

[0009] The first locking mechanism is used to adjust and lock the position of the headrest support rod relative to the base, thereby adjusting the height of the headrest body;

[0010] The base is provided with head side clamping and positioning components on both sides of the head support body, which are used to adjust the width and position the head. The head side clamping and positioning components are provided with a second locking mechanism.

[0011] As a preferred embodiment of the present invention, the first locking mechanism includes a square limiting sleeve, a first limiting frame, a first insert rod, a first limiting ring, and a first spring. The first limiting frame is disposed on the square limiting sleeve, the first insert rod is movably inserted through the first limiting frame, the first limiting ring is fixedly connected to the outer circumference of the first insert rod, and the first spring is sleeved on the first insert rod.

[0012] As a preferred embodiment of the present invention, the square limiting sleeve is fixed on the base, the head support rod slides through the square limiting sleeve and the base, and the head support rod is provided with a plurality of head support limiting holes along its axial direction, the head support limiting holes cooperating with the first insertion rod.

[0013] As a preferred embodiment of the present invention, the base has rectangular openings symmetrically provided on both sides of the head support body, and the inner walls of the rectangular openings are provided with limiting grooves. The head lateral clamping and positioning component is slidably connected to the limiting grooves in the rectangular openings of the width adjustment component.

[0014] As a preferred embodiment of the present invention, the head lateral clamping and positioning assembly includes two square sleeves, a limiting slider symmetrically and fixedly connected to both sides of the square sleeves, and a bidirectional threaded rod threaded at the bottom between the two square sleeves. An L-shaped adjusting rod is slidably sleeved inside the upper end of each of the two square sleeves. The L-shaped adjusting rod has a positioning hole in the longitudinal direction, and a side plate is fixedly connected to the side of the L-shaped adjusting rod facing the head support body.

[0015] As a preferred embodiment of the present invention, the limiting slider is slidably disposed within the two limiting grooves, and a soft pad is fixedly adhered to the outer side of the side plate.

[0016] As a preferred embodiment of the present invention, the second locking mechanism includes a second limiting frame, a second insert rod, a second limiting ring, and a second spring. The second limiting frame is disposed on the outer side of the upper end of the square sleeve, the second insert rod is movably inserted through the second limiting frame, and the second spring is sleeved on the outer side of the circumference of the second insert rod.

[0017] As a preferred embodiment of the present invention, the second limiting ring is fixedly connected to the outer circumference of the second insert rod, and the second insert rod extends movably into the inside of the square sleeve and is inserted into the positioning hole.

[0018] As a preferred embodiment of the present invention, the base has an L-shaped structure, and a plurality of fixing holes are provided at one end of the base.

[0019] The present invention has the following advantages:

[0020] The structure of this invention is simple and employs a dual locking mechanism using a spring, a plug rod, and a limiting ring. It eliminates the need for manual bolt tightening; the spring force drives the plug rod to automatically engage with the limiting hole, enabling rapid locking and unlocking and significantly improving operational efficiency. Compared to toothed engagement limiting mechanisms, the multi-position limiting holes on the head support rod and L-shaped adjusting rod allow for accurate locking of height, lateral width, and side plate height. The limiting strength is high, preventing loosening over long-term use. Simultaneously, the head lateral clamping and positioning components on both sides of the base can drive two square sleeves with side plates to move synchronously in opposite directions within a rectangular opening by rotating a bidirectional threaded rod. This adjusts the distance between the two side plates, enabling positioning for different head sizes, preventing head displacement during use, and ensuring operational accuracy.

[0021] 2. The soft pads bonded to the outer side of the side plates can effectively buffer the pressure during clamping, reduce pressure on the head, and improve the comfort of use; at the same time, the L-shaped adjustment rod can slide inside the square sleeve, and with the second locking mechanism, the vertical height of each side plate can be adjusted individually, which can adapt to different head contours and further improve the fit and comfort of clamping and positioning.

[0022] 3. Its base adopts an L-shaped structure and has fixing holes, which makes it easy to fix the headrest stably on various operating tables or nursing beds. The first locking mechanism and the second locking mechanism have the same structure and operation. They both use a spring and a plug rod to cooperate, which is simple and easy to understand. No complicated operation steps are required, which makes it easy for users to get started quickly. Adjustment and locking can be completed quickly in emergency situations.

[0023] 4. All components in the structure adopt a rigid structure design. Components such as square limit sleeves and square sleeves can limit and guide the moving parts, reduce wear between parts, and the spring-driven locking method can avoid damage to the parts caused by hard contact, effectively extend the service life of the headrest, reduce the cost of use, and is very practical. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the bottom structure of a preferred embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the split structure of the second locking mechanism according to a preferred embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the split structure of the first locking mechanism in a preferred embodiment of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Base; 2. Square limiting sleeve; 3. Head support rod; 301. Head support limiting hole; 4. Head support body; 5. Rectangular opening; 6. Limiting groove; 7. Limiting slider; 8. Square sleeve; 9. L-shaped adjusting rod; 901. Positioning hole; 10. Side plate; 11. First limiting frame; 12. First insert rod; 13. First limiting ring; 14. First spring; 15. Two-way threaded rod; 16. Second limiting frame; 17. Second insert rod; 18. Second limiting ring; 19. Second spring; 20. Soft pad. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Example 1

[0033] Please refer to the following: Figure 1 , Figure 2 , Figure 4 The present invention provides an adjustable positioning headrest, comprising: a base 1;

[0034] The head support rod 3 has one end movably mounted on the base 1;

[0035] The head support body 4 is connected to one end of the head support rod 3;

[0036] The first locking mechanism is used to adjust and lock the position of the head support rod 3 relative to the base 1, thereby adjusting the height of the head support body 4;

[0037] The base 1 is provided with head side clamping and positioning components on both sides of the head support body 4, which are used to adjust the width and position the head. The head side clamping and positioning components are provided with a second locking mechanism.

[0038] The first locking mechanism includes a square limiting sleeve 2, a first limiting frame 11, a first insert rod 12, a first limiting ring 13, and a first spring 14. The first limiting frame 11 is disposed on the square limiting sleeve 2. The first insert rod 12 is movably inserted through the first limiting frame 11. The first limiting ring 13 is fixedly connected to the outer circumference of the first insert rod 12. The first spring 14 is sleeved on the first insert rod 12. The square limiting sleeve 2 is fixed to the base 1. The head support rod 3 slides through the square limiting sleeve 2 and the base 1. The head support rod 3 has multiple head support limiting holes 301 along its axial direction, and the head support limiting holes 301 cooperate with the first insert rod 12.

[0039] In use, the headrest body 4 directly supports the back of the user's head. The first locking mechanism adjusts and locks the position of the headrest support rod 3 relative to the base 1, thereby adjusting the overall height of the headrest body 4. The two ends of the first spring 14 abut against the first limiting frame 11 and the first limiting ring 13, respectively, providing a continuous elastic force to the first insertion rod 12, causing it to tend to move inward (towards the headrest support rod 3). In its natural state, under the elastic force of the first spring 14, the end of the first insertion rod 12 is inserted into a headrest limiting hole 301 of the headrest support rod 3, thereby locking the position of the headrest support rod 3. When height adjustment is required, the first insertion rod 12 is pulled outward, causing its end to disengage from the current headrest limiting hole 301. Then, the headrest support rod 3 is slid up and down to the desired height. Releasing the first insertion rod 12 will cause it to automatically spring back into the corresponding headrest limiting hole 301 under the action of the first spring 14, completing the locking.

[0040] Example 2

[0041] Combination Figure 3As shown, the base 1 has symmetrical rectangular openings 5 ​​on both sides of the headrest body 4. Limiting grooves 6 are formed on the inner walls of both sides of the rectangular openings 5. The head lateral clamping and positioning assembly is slidably connected to the limiting grooves 6 within the rectangular openings 5 ​​of the width adjustment assembly. The head lateral clamping and positioning assembly includes two square sleeves 8, limiting sliders 7 symmetrically fixedly connected to both sides of the square sleeves 8, and a bidirectional threaded rod 15 threaded at the bottom between the two square sleeves 8. An L-shaped adjusting rod 9 is slidably fitted inside the upper end of each of the two square sleeves 8. The L-shaped adjusting rod 9 has a positioning hole 901 longitudinally formed, and a side plate 10 is fixedly connected to the side of the L-shaped adjusting rod 9 facing the headrest body 4. The limiting slider 7 is slidably disposed in the two limiting grooves 6. A soft pad 20 is fixedly bonded to the outside of the side plate 10. The second locking mechanism includes a second limiting frame 16, a second insert rod 17, a second limiting ring 18, and a second spring 19. The second limiting frame 16 is disposed on the outer side of the upper end of the square sleeve 8. The second insert rod 17 is movably inserted through the second limiting frame 16. The second spring 19 is sleeved on the outer circumference of the second insert rod 17. The second limiting ring 18 is fixedly connected to the outer circumference of the second insert rod 17. The second insert rod 17 extends movably into the inside of the square sleeve 8 and is inserted into the positioning hole 901. The base 1 has an L-shaped structure, and several fixing holes are opened at one end of the base 1.

[0042] In use, the head-side clamping and positioning assembly is mounted on the base 1 and located on both sides of the headrest body 4. It clamps and fixes the user's head from both sides and the clamping width is adjustable. Rotating the knob on the bidirectional threaded rod 15 drives the two square sleeves 8 to move synchronously closer or further apart within the rectangular opening 5. The side plate 10 contacts the side of the user's head, and the soft pad 20 enhances user comfort. The head-side clamping and positioning assembly also includes a second locking mechanism for individually adjusting and locking the height of each L-shaped adjusting rod 9 within the square sleeve 8, thereby adjusting the vertical position of the side plate 10. The two ends of the second spring 19 abut against the second limiting frame 16 and the second limiting ring 18, respectively, providing elastic force to the second insertion rod 17 towards the interior of the square sleeve 8. The second insertion rod 17 can be inserted into any of the positioning holes 901 on the L-shaped adjusting rod 9. Its locking and unlocking principle is the same as the first locking mechanism.

[0043] The above structure and implementation can fully achieve the following:

[0044] Using the structure of this invention, the extension length of the headrest support rod can be flexibly adjusted via the first locking mechanism to adjust the height of the headrest body off the ground. Multiple headrest limiting holes arranged axially on the headrest support rod allow for multi-level height adjustment, accommodating individuals of different body types and with varying examination or nursing requirements. Simultaneously, the first locking mechanism employs a spring-driven insertion rod structure; releasing the insertion rod automatically locks the head, ensuring stability and preventing loosening. Furthermore, the head lateral clamping and positioning components on both sides of the base can drive two square sleeves with side plates to move synchronously in opposite directions within a rectangular opening by rotating a bidirectional threaded rod, thereby adjusting the distance between the two side plates. This allows for positioning for different head sizes, preventing head displacement during use and ensuring operational accuracy.

[0045] The soft pads bonded to the outer side of the side plates can effectively buffer the pressure during clamping, reduce pressure on the head, and improve the comfort of use. At the same time, the L-shaped adjustment rod can slide inside the square sleeve, and together with the second locking mechanism, the vertical height of each side plate can be adjusted individually to adapt to different head contours, further improving the fit and comfort of clamping and positioning.

[0046] Its base adopts an L-shaped structure and has fixing holes, which makes it easy to fix the headrest stably on various operating tables or nursing beds. The first locking mechanism and the second locking mechanism have the same structure and operation. They both use a spring and a plug rod to cooperate, which is simple and easy to understand. No complicated operation steps are required, which makes it easy for users to get started quickly. Adjustment and locking can be completed quickly in emergency situations.

[0047] All components in the structure adopt a rigid structure design. Components such as square limit sleeves and square sleeves can limit and guide the moving parts, reduce wear between parts, and the spring-driven locking method can avoid damage to the parts caused by hard contact, effectively extend the service life of the headrest and reduce the cost of use.

[0048] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Other parts of the present invention not described in detail belong to the prior art and will not be elaborated upon here.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable positioning headrest, characterized in that, Including the base (1); The head support rod (3) has one end movably mounted on the base (1); The head support body (4) is connected to one end of the head support rod (3); The first locking mechanism is used to adjust and lock the position of the head support rod (3) relative to the base (1), thereby adjusting the height of the head support body (4); The base (1) is provided with head side clamping and positioning components on both sides of the head support body (4) for adjusting the width and positioning the head. The head side clamping and positioning components are provided with a second locking mechanism.

2. An adjustable positioning headrest as described in claim 1, characterized in that, The first locking mechanism includes a square limiting sleeve (2), a first limiting frame (11), a first insert rod (12), a first limiting ring (13), and a first spring (14). The first limiting frame (11) is disposed on the square limiting sleeve (2), the first insert rod (12) is movably inserted through the first limiting frame (11), the first limiting ring (13) is fixedly connected to the outer circumference of the first insert rod (12), and the first spring (14) is sleeved on the first insert rod (12).

3. An adjustable positioning headrest as described in claim 2, characterized in that, The square limiting sleeve (2) is fixed on the base (1), and the head support rod (3) slides through the square limiting sleeve (2) and the base (1). The head support rod (3) has multiple head support limiting holes (301) along its axial direction, and the head support limiting holes (301) cooperate with the first insert rod (12).

4. An adjustable positioning headrest as described in claim 1, characterized in that, The base (1) has rectangular openings (5) symmetrically opened on both sides of the head support body (4). The inner walls of the rectangular openings (5) are provided with limiting grooves (6). The head side clamping and positioning component is slidably connected to the limiting grooves (6) in the rectangular openings (5) of the width adjustment component.

5. An adjustable positioning headrest as described in claim 1, characterized in that, The head lateral clamping and positioning assembly includes two square sleeves (8), a limiting slider (7) symmetrically fixedly connected to both sides of the square sleeves (8), and a bidirectional threaded rod (15) threaded at the bottom between the two square sleeves (8). An L-shaped adjusting rod (9) is slidably sleeved inside the upper end of each of the two square sleeves (8). The L-shaped adjusting rod (9) has a positioning hole (901) longitudinally opened. A side plate (10) is fixedly connected to the side of the L-shaped adjusting rod (9) facing the head support body (4).

6. An adjustable positioning headrest as described in claim 1, characterized in that, The limiting slider (7) is slidably disposed in the two limiting grooves (6), and a soft pad (20) is fixedly bonded to the outside of the side plate (10).

7. An adjustable positioning headrest as described in claim 1, characterized in that, The second locking mechanism includes a second limiting frame (16), a second insert rod (17), a second limiting ring (18), and a second spring (19). The second limiting frame (16) is located on the outer side of the upper end of the square sleeve (8). The second insert rod (17) is movably inserted through the second limiting frame (16). The second spring (19) is sleeved on the outer side of the circumference of the second insert rod (17).

8. An adjustable positioning headrest as described in claim 7, characterized in that, The second limiting ring (18) is fixedly connected to the outer circumference of the second insert (17), and the second insert (17) extends movably into the inside of the square sleeve (8) and is inserted into the positioning hole (901).

9. An adjustable positioning headrest as described in claim 1, characterized in that, The base (1) has an L-shaped structure, and a number of fixing holes are provided at one end of the base (1).

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