A sitting ergonomic chair

Abstract

The utility model relates to the technical fields of ergonomic chair, especially a sitting posture ergonomic chair, which comprises a seat cushion body, a seat cushion and a waist cushion connected to each other, a height adjusting device installed on the waist cushion, a rod body one and a rod body two, a backrest part installed on the rod body one, a headrest part installed on the height adjusting device, wherein the height adjusting device further comprises a handle and a locking mechanism, the rod body two is slidingly arranged in the rod body one, the locking mechanism comprises a plug rod, the plug rod penetrates through the rod body two and is arranged in the rod body one, and when the handle is pulled, the plug rod can be separated from the rod body one; the utility model separates the plug rod from the rod body one by simply pulling the handle, completes the height adjusting operation, and can fix the position by means of the locking mechanism after adjustment, so as to avoid accidental sliding during use and ensure the support stability; and the ergonomic chair can be applied to workers who sit for a long time to relieve lumbar and cervical fatigue.

Description

Technical Field

[0001] This utility model relates to the technical field of ergonomic chairs, and more particularly to a sitting ergonomic chair. Background Technology

[0002] With the increasing demand for sedentary work in offices, schools, and home leisure settings, ergonomic chairs have gained widespread use due to their ergonomic design and ability to alleviate fatigue from prolonged sitting. The core design goal of existing ergonomic chairs is to reduce pressure on the neck, lower back, and hips by optimizing the support structure, thereby avoiding problems such as muscle strain and poor blood circulation caused by prolonged poor posture.

[0003] The height adjustment of the headrest and backrest of existing ergonomic chairs mostly uses threaded knobs or snap-on fixing methods, which have problems such as cumbersome operation (requiring manual turning of the knob multiple times) and poor locking reliability (such as snaps being easy to loosen or slip off). The rod connection structure of some adjustment mechanisms is not reasonably designed, and it is easy to get stuck or shift during sliding. In addition, the connection stability between the rod and the chair body is insufficient, which may cause wobbling after long-term use and affect the support effect.

[0004] In view of the shortcomings of the existing technology, there is an urgent need for an ergonomic chair that is highly adjustable, reliably locked, provides comfortable lumbar support, and has a stable structure, so as to meet users' comprehensive needs for comfort during long periods of sitting, ease of operation, and stability of use. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned technical problems by providing a ergonomic chair for improving posture.

[0006] In view of this, the present invention provides an ergonomic chair for sitting posture, comprising: a seat cushion body, the seat cushion body including a seat cushion and a lumbar support cushion connected together; a height adjustment device, installed on the lumbar support cushion, including a first rod and a second rod, with a backrest portion installed on the first rod; and a headrest portion installed on the height adjustment device; wherein, the height adjustment device further includes a handle and a locking mechanism, the second rod being slidably disposed within the first rod, and the locking mechanism including an insert rod, the insert rod passing through the second rod and disposed within the first rod, such that when the handle is pulled, the insert rod can be disengaged from the first rod.

[0007] Furthermore, it also includes: a massage module, which is mounted on the lumbar support cushion; and a switch, which is mounted on the back of the lumbar support cushion for controlling the massage module.

[0008] Furthermore, it also includes a heating layer, which is disposed on the surface of the lumbar support cushion near the waist.

[0009] Furthermore, the lower end of rod one is fixedly inserted into the top of the lumbar support cushion, rod one includes a sliding cavity, and rod two is inserted into the sliding cavity.

[0010] Furthermore, the locking mechanism also includes: a mounting base, which is fixedly disposed at the lower end of the rod body two; a sliding wedge, which is slidably connected to the mounting base and connected to the handle, the sliding wedge including a first inclined surface; a limiting block is provided at one end of the insertion rod, and a return spring is provided between the limiting block and the inner wall of the rod body two, the limiting block having a second inclined surface, the second inclined surface abutting against the first inclined surface.

[0011] Furthermore, it also includes: a second reset spring, which is disposed inside the second rod and abuts against the top of the sliding wedge, for resetting the sliding wedge.

[0012] Furthermore, the headrest is hinged to one side of the upper end of the second rod via a hinge rod, and a return torsion spring for resetting the headrest is provided on the hinge rod.

[0013] Furthermore, the lower end of the handle is provided with a sliding rod, which is axially slidably disposed at the top of the second rod body, and the sliding rod and the sliding wedge are connected by a connecting rod.

[0014] Furthermore, it also includes a hand-held part, which is located at the top of the second rod and on one side of the direction of the pull handle.

[0015] Furthermore, the seat cushion body includes a mounting shell with a mounting groove, and the lower end of the rod is inserted into the mounting groove.

[0016] The beneficial effects of this utility model are: 1. This utility model allows the insertion rod to detach from the rod body by simply pulling the handle, thus completing the height adjustment operation. After adjustment, the position can be fixed by the locking mechanism to prevent accidental slippage during use and ensure support stability. It can also be used to relieve lumbar and cervical spine fatigue for workers who sit for long periods of time.

[0017] 2. The mounting base of this utility model provides a stable mounting foundation for the sliding wedge; the first inclined surface of the sliding wedge abuts against the second inclined surface of the limiting block. When the handle moves the sliding wedge, the insertion rod can be driven by the inclined surface transmission to disengage the insertion rod from the rod body. The reset spring can automatically push the insertion rod to reset and re-insert it into the rod body after adjustment, thus completing the locking. The entire structure has precise transmission, ensuring the reliability of locking and unlocking actions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the back side of this utility model; Figure 3 This is a schematic diagram of the structure of the rear hidden mounting shell of this utility model; Figure 4 In order to be in Figure 3 A schematic diagram of the structure of the hidden rod is shown below: Figure 5 This is a schematic diagram of the mounting base of this utility model; Figure 6 This is a schematic diagram of the sliding wedge and insert rod of this utility model; Figure 7 This is a schematic diagram of the reset torsion spring and hinge rod of this utility model.

[0019] The markings in the diagram are as follows: 1. Seat cushion body; 2. Seat cushion; 3. Lumbar support cushion; 4. Rod one; 5. Rod two; 6. Headrest; 7. Handle; 8. Insert rod; 9. Massage module; 10. Switch; 11. Heating layer; 12. Mounting base; 13. Sliding wedge; 14. Limiting block; 15. Return spring two; 16. Sliding rod; 17. Connecting rod; 18. Return torsion spring; 19. Hinge rod; 20. Handhold; 21. Mounting shell; 22. Backrest; 23. Groove. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0021] Example 1: This embodiment provides an ergonomic chair for sitting posture, including: The seat cushion body 1 includes a seat cushion 2 and a lumbar support cushion 3 connected together. The height adjustment device is installed on the lumbar support cushion 3 and includes a first rod 4 and a second rod 5. A backrest 22 is installed on the first rod 4. Headrest 6, which is mounted on the height adjustment device; The height adjustment device also includes a handle 7 and a locking mechanism. The second rod 5 is slidably disposed in the first rod 4. The locking mechanism includes a plug rod 8, which passes through the second rod 5 and is placed in the first rod 4. When the handle 7 is pulled, the plug rod 8 can be disengaged from the first rod 4.

[0022] The seat cushion body 1 includes a seat cushion 2 and a lumbar support cushion 3 connected to each other. Structurally, the seat cushion body 1 includes a mounting base, on which the seat cushion 2 and the lumbar support cushion 3 are fastened. An mounting chamber is formed between the mounting base and the lumbar support cushion 3. The mounting chamber also includes a mounting groove formed at the upper end of the lumbar support cushion 3. The mounting groove is vertically downward, and a rod 4 is inserted into the mounting groove and fixed by fasteners. The inserted portion of the rod 4 is half its overall length. The backrest 22 is located above the lumbar support and is mounted on the rod 4 by tenon and mortise structures or fasteners. Several... The through holes are evenly distributed in pairs. To increase the stability by increasing the length of the through holes, countersunk holes corresponding to the through holes can be provided on the surface of the contact rod 4 on the backrest 22. The rod 4 is made of hollow aluminum alloy and is flat. The rod 5 is slidably inserted into the rod 4. The inside of the rod 5 is also hollow. A locking mechanism is provided inside the rod 5. A handle 7 is provided at the top of the rod 5. When the handle 7 is pulled upward, the insert rod 8, which was originally inserted into the through hole and the countersunk hole, retracts and disengages from the through hole, allowing the rod 5 to slide up and down. When it slides to the appropriate position, the handle 7 moves down and the insert rod 8 returns to its original position, thus achieving relative fixation of the positions of the rod 4 and the rod 5.

[0023] The headrest 6 is mounted on the second rod 5. When the position of the second rod 5 is adjusted, the position of the headrest 6 can be adjusted.

[0024] The headrest 6 has a certain curvature. When the user's head is placed on the headrest 6, the two sides of the headrest 6 provide some resistance to the head's deviation, which can prevent the head from tilting too much and relieve cervical spine pressure.

[0025] With the above structure, the height adjustment device can flexibly change the height of the backrest 22 and the headrest 6 through the sliding cooperation of rod 4 and rod 5, adapting to people of different heights; the combination of handle 7 and locking mechanism allows the insertion rod 8 to be disengaged from rod 4 by simply pulling handle 7 to complete the height adjustment operation, and after adjustment, it can be fixed in position by relying on the locking mechanism to prevent accidental slippage during use and ensure support stability; it can also be used to relieve lumbar and cervical fatigue for workers who sit for long periods of time.

[0026] The seat cushion body 1 is provided with a groove for installing the massage module 9. The massage module 9 is installed in the groove. The massage module 9 is a module with vibration effect. The switch 10 is a double control switch 10 with two buttons. One button controls the start of the vibration module and the other controls the start of the graphene electric heating element. The heating intensity can be adjusted in multiple levels. The switch 10, the electric heating element and the vibration module are all existing products. The specific structure will not be described in detail.

[0027] A lumbar massage function has been added to address the pain points of lower back pain after prolonged sitting. The massage module 9 is specifically designed for the lower back to relieve muscle tension and fatigue. The switch 10 is installed on the back of the lumbar support cushion 3, which allows users to easily turn the massage function on or off without affecting their posture or the appearance of the chair, while also preventing accidental activation of the switch 10.

[0028] Also includes: Heating layer 11 is disposed on the surface of the lumbar support cushion 3 near the waist.

[0029] Furthermore, a knitted layer is covered on the heating layer 11 to disperse the heat and prevent the user from being burned by concentrated heat.

[0030] It enhances the comfort and warmth of the lower back. The heating layer 11 is designed to fit the sides of the waist, providing direct heat to the lower back, making it especially suitable for use in cold environments. It can also promote blood circulation in the lower back, further reducing discomfort caused by prolonged sitting, and providing a more comfortable support experience for the lower back while keeping it warm.

[0031] The lower end of rod 4 is fixedly inserted into the top of the lumbar support cushion 3. Rod 4 includes a sliding cavity, and rod 5 is inserted into the sliding cavity.

[0032] The connection structures between rod 1 (4) and lumbar support cushion (3), and between rod 1 (4) and rod 2 (5) are clearly defined. Rod 1 (4) is connected to lumbar support cushion (3) via a fixed plug-in connection, ensuring the secure installation of the height adjustment device. The design of the sliding cavity provides a stable sliding path for rod 2 (5), making its movement smoother when adjusting the height, avoiding problems such as jamming or offset, and improving the smoothness of the adjustment process.

[0033] The locking mechanism also includes: Mounting base 12 is fixedly installed at the lower end of rod body 5; The sliding wedge 13 is slidably connected to the mounting base 12 and connected to the handle 7. The sliding wedge 13 includes a first inclined surface. One end of the insertion rod 8 is provided with a limiting block 14, and a return spring is provided between the limiting block 14 and the inner wall of the rod body 5. The limiting block 14 is provided with a second inclined surface, which abuts against the first inclined surface.

[0034] Mounting base 12 is installed inside the lower end of rod body 2 5 by fasteners. Sliding wedge block 13 is slidably connected to mounting base 12, and the upper end face of sliding wedge block 13 is connected to handle 7 via connecting rod 17. When handle 7 is pulled upward, sliding wedge block 13 can be moved upward and insert rod 8 through sliding wedge block 13. One side of insert rod 8 is inserted into through hole, and the other end of insert rod 8 is provided with groove 23. A return spring is provided in groove 23. One end of return spring 1 abuts against the inner wall of rod body 2 5, and the other end is inserted into groove 23 and abuts against the end of insert rod 8. When handle 7 is released or handle 7 is pressed down, sliding wedge block 13 descends and insert rod 8 is inserted into through hole.

[0035] Two insert rods 8 can be symmetrically provided on the sliding wedge block 13 to enhance the stability of the structure.

[0036] The working principle of the locking mechanism has been refined, making the height locking more reliable. The mounting base 12 provides a stable mounting foundation for the sliding wedge 13; the first inclined surface of the sliding wedge 13 abuts against the second inclined surface of the limiting block 14. When the handle 7 moves the sliding wedge 13, the inclined surface transmission can push the insertion rod 8 to move, realizing the disengagement of the insertion rod 8 from the rod body 4; after the adjustment is completed, the return spring can automatically push the insertion rod 8 to reset and re-insert it into the rod body 4 to complete the locking. The entire structure has precise transmission, ensuring the reliability of the locking and unlocking actions.

[0037] It also includes: a second reset spring 15, which is disposed inside the second rod 5 and abuts against the top of the sliding wedge 13, for resetting the sliding wedge 13.

[0038] This ensures the automatic reset of the sliding wedge 13. After the handle 7 is pulled to complete the height adjustment, the reset spring 15 generates an elastic force, pushing the sliding wedge 13 back to its initial position. This eliminates the need for manual reset by the user, preparing it for the next locking operation, simplifying the operation process and improving ease of use.

[0039] Example 2: This embodiment provides an ergonomic chair for sitting posture, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0040] The headrest 6 is hinged to one side of the upper end of the second rod 5 via a hinge rod 19, and a return torsion spring 18 for resetting the headrest 6 is provided on the hinge rod 19.

[0041] The adaptability of the headrest 6 has been enhanced. The design of the hinge rod 19 allows the headrest 6 to rotate flexibly to adapt to the angle requirements of the user's neck in different sitting postures; the return torsion spring 18 can automatically return the headrest 6 to its initial position after the user's head leaves the headrest 6, preventing the headrest 6 from tilting and always maintaining a good support state for the neck.

[0042] The lower end of the handle 7 is provided with a sliding rod 16. The sliding rod 16 is slidably disposed on the top of the rod body 5 along the axial direction, and the sliding rod 16 and the sliding wedge block 13 are connected by a connecting rod 17.

[0043] The transmission connection between the handle 7 and the sliding wedge 13 has been optimized. The sliding rod 16 and the connecting rod 17 form a stable transmission structure, which enables the pulling force of the handle 7 to be transmitted to the sliding wedge 13 efficiently and smoothly, avoiding force loss or deviation during the force transmission process, and ensuring that the sliding wedge 13 can be accurately driven when the handle 7 is pulled, making the unlocking action more sensitive and smooth.

[0044] Also includes: Handle 20 is located at the top of the rod body 2 5 and on the side of the handle 7 in the pulling direction.

[0045] The ease of operation during height adjustment has been improved. When adjusting the height, the user can hold both the handle 20 and the pull handle 7 with one hand and pull the pull handle 7 towards the handle 20. The handle 20 provides a leverage point for the user, eliminating the need for two-handed control and allowing for operation with one hand. This also makes it easier to apply pulling force, making it especially suitable for scenarios where the height needs to be adjusted frequently.

[0046] The seat cushion body 1 includes a mounting shell 21, on which a mounting groove is provided, and the lower end of the rod 4 is inserted into the mounting groove.

[0047] The connection stability between the rod 4 and the seat / backrest body 1 is enhanced. The cooperation between the mounting shell 21 and the mounting groove provides precise installation positioning for the rod 4, making the connection between the rod 4 and the lumbar support cushion 3 tighter. During height adjustment or daily use, it can prevent the rod 4 from shaking or loosening, ensuring the stability of the entire height adjustment device and even the overall structure of the chair.

[0048] Also includes: The traction belt is located at the top of the backrest 22.

[0049] The traction belt is horizontally shaped like an 8, and is fixedly connected to the backrest 22 in the middle. It is used to fix the user's upper limbs and has the function of correcting lumbar pressure in a sitting environment.

[0050] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, all of which fall within the scope of protection of this application.

Claims

1. An ergonomic chair for sitting posture, characterized in that, include: The seat cushion body (1) includes a seat cushion (2) and a lumbar support cushion (3) connected together. The height adjustment device is installed on the lumbar support cushion (3) and includes a first rod (4) and a second rod (5), with a backrest (22) installed on the first rod (4); Headrest (6), the headrest (6) is mounted on the height adjustment device; The height adjustment device also includes a handle (7) and a locking mechanism. The second rod (5) is slidably disposed in the first rod (4). The locking mechanism includes a plug (8), which passes through the second rod (5) and is placed in the first rod (4). When the handle (7) is pulled, the plug (8) can be disengaged from the first rod (4).

2. The ergonomic chair according to claim 1, characterized in that, Also includes: Massage module (9) is mounted on the lumbar support cushion (3); Switch (10) is installed on the back of the lumbar support cushion (3) and is used to control the massage module (9).

3. The ergonomic chair according to claim 1, characterized in that, Also includes: Heating layer (11) is placed on the surface of the lumbar support cushion (3) near the waist.

4. The ergonomic chair according to claim 1, characterized in that, The lower end of rod one (4) is fixedly inserted into the top of the lumbar support cushion (3). Rod one (4) includes a sliding cavity, and rod two (5) is inserted into the sliding cavity.

5. The ergonomic chair according to claim 1, characterized in that, The locking mechanism also includes: Mounting seat (12), which is fixedly installed at the lower end of rod body two (5); A sliding wedge (13) is slidably connected to the mounting base (12) and connected to the handle (7). The sliding wedge (13) includes a first inclined surface. One end of the insertion rod (8) is provided with a limiting block (14), and a reset spring is provided between the limiting block (14) and the inner wall of the rod body (5). The limiting block (14) is provided with a second inclined surface, which abuts against the first inclined surface.

6. The ergonomic chair according to claim 1, characterized in that, Also includes: The second reset spring (15) is located inside the second rod (5) and abuts against the top of the sliding wedge (13) to reset the sliding wedge (13).

7. The ergonomic chair according to claim 1, characterized in that, The headrest (6) is hinged to one side of the upper end of the second rod (5) via a hinge rod (19), and a reset torsion spring (18) for resetting the headrest (6) is provided on the hinge rod (19).

8. The ergonomic chair according to claim 1, characterized in that, The lower end of the handle (7) is provided with a sliding rod (16), which is axially slidably disposed on the top of the second rod (5), and the sliding rod (16) and the sliding wedge (13) are connected by a connecting rod (17).

9. The ergonomic chair according to claim 1, characterized in that, Also includes: Handle (20) is located at the top of the second rod (5) and on the side of the pull direction of the handle (7).

10. The ergonomic chair according to claim 1, characterized in that, The seat cushion body (1) includes a mounting shell (21), which has a mounting groove, and the lower end of the rod (4) is inserted into the mounting groove.

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