Adjustable office chair headrest

Abstract

An adjustable office chair headrest is used for solving the problems that in the prior art, a headrest in the prior art can only be adjusted in the vertical height, however, due to the fact that sitting postures of different users are different, the distances between the necks of the users and the headrest are different, the headrest can not be well attached to the necks of the users, and the headrest is prone to being damaged. The office chair comprises a mounting shell used for being connected with an office chair and a supporting rod slidably arranged in the mounting shell in a penetrating mode, a mounting rod facing the side where a human body leans is slidably arranged in the supporting rod, and a plurality of inserting holes arrayed in the length direction of the mounting rod are formed in the mounting rod; an inserting block is arranged on the supporting rod in a sliding and penetrating mode, a clamping assembly used for pushing the inserting block and enabling the inserting block to be connected with one inserting hole in a clamping mode is arranged on the supporting rod, a back cushion is rotationally arranged on the side, facing the leaning side of the human body, of the mounting rod, and an adjusting assembly used for adjusting the vertical height of the supporting rod is arranged in the mounting shell.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, specifically to an adjustable office chair headrest. Background Technology

[0002] Office chairs refer to various chairs provided for convenience in daily work and social activities. They consist of casters, chair legs, gas springs, chassis, seat, armrests, backrest and seat connectors, backrest, lumbar support, and headrest.

[0003] Existing technology for chairs, such as the utility model patent document with authorization announcement number "CN217365115U" and patent name "A Height-Adjustable Office Chair Headrest", discloses an office chair including a headrest body and a headrest connecting rod. The top of the headrest connecting rod is an arc-shaped rod, which is connected to the headrest body. The front side of the headrest connecting rod is provided with a connecting shell, and the connecting shell is provided with an elastic retaining bead. The rear end of the retaining bead extends out of the rear end of the connecting shell. The front side of the headrest connecting rod is provided with a sliding groove, and the rear side of the sliding groove is provided with multiple slots arranged vertically, in which the retaining bead is engaged.

[0004] The headrest in the aforementioned patent document can only be adjusted vertically. However, due to different sitting postures of different users, the distance between the user's neck and the headrest is also different, which may make it impossible for the headrest to fit the user's neck well and provide support for the user's neck. Summary of the Invention

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by proposing an adjustable office chair headrest. This addresses the technical problem mentioned in the background art: the existing headrests can only be adjusted vertically, but due to different sitting postures of different users, the distance between the user's neck and the headrest is also different, which may prevent the headrest from fitting well against the user's neck and providing adequate support.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] An adjustable office chair headrest includes a mounting shell for connecting to an office chair and a support rod slidably inserted into the mounting shell. A mounting rod facing the side of the user leans against is slidably disposed within the support rod. The mounting rod has a plurality of insertion holes arranged along its length. An insertion block slidably passes through the support rod. The support rod has a locking assembly for pushing the insertion block and engaging it with one of the insertion holes. A backrest is rotatably disposed on the mounting rod facing the side of the user leans against. An adjustment assembly for adjusting the vertical height of the support rod is disposed within the mounting shell.

[0008] Working principle:

[0009] When it is necessary to change the distance between the pillow and the support rod, the user can release the push of the insert block through the snap-fit ​​assembly, and then remove the insert block from the socket. The user can then change the position of the mounting rod inside the support rod. After the pillow is moved to the appropriate position, the user can re-engage the insert block with the socket through the snap-fit ​​assembly to fix the moved mounting rod. When the user needs to change the vertical position of the support rod on the mounting housing, the user can change the vertical position of the support rod inside the mounting housing through the adjustment assembly, thereby changing the vertical position of the pillow.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] First, it is equipped with a plug and a socket. The plug can slide through the support rod and engage with the socket on the mounting rod, thereby fixing the position of the mounting rod.

[0012] Secondly, a snap-fit ​​assembly is provided, which can control the snap-fit ​​between the plug and the socket, thus making it convenient for users to change the position of the mounting rod inside the support rod.

[0013] Third, an adjustment component is provided, which allows the vertical height of the support rod within the mounting housing to be adjusted, thus facilitating changes to the vertical height of the pillow. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0015] Figure 2 for Figure 1 Enlarged cross-sectional view of point A in the middle;

[0016] Figure 3 This is a schematic cross-sectional view of the assembly structure of the pressing block and the limiting teeth;

[0017] Figure 4 for Figure 1 Enlarged cross-sectional view of section B;

[0018] Figure 5 for Figure 1 Enlarged cross-sectional view of the structure at point C;

[0019] Figure 6 for Figure 1 Enlarged cross-sectional view of point D.

[0020] Explanation of reference numerals in the attached drawings: 1. Mounting shell; 2. Support rod; 3. Mounting rod; 4. Insertion hole; 5. Insertion block; 6. Backrest; 7. Guide rod; 8. Push rod; 9. First spring; 10. Fixing bracket; 11. Second spring; 12. First sliding groove; 13. Slot; 14. Pressing block; 15. Limiting tooth; 16. Third spring; 17. First rotating shaft; 18. Connecting rod; 19. Elastic rubber strip; 20. Groove; 21. Cavity; 22. Fixing rod; 23. Fourth spring; 24. Second rotating shaft. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] Example:

[0023] like Figure 1 and Figure 3 As shown, an adjustable office chair headrest includes a mounting shell 1 for connecting to an office chair and a support rod 2 that slides through the mounting shell 1. The mounting shell 1 contains an adjustment assembly for adjusting the vertical height of the support rod 2. The adjustment assembly includes two pressing blocks 14, two limiting teeth 15, and a third spring 16. Both pressing blocks 14 slide through the mounting shell 1 and extend into it. The two limiting teeth 15 are respectively fixed to the bottom of opposite sides of the support rod 2. The two pressing blocks 14 extend into... One end of the mounting shell 1 is engaged with the opposite sidewalls of the two limiting teeth 15. The two ends of the third spring 16 are fixed between the two pressing blocks 14. By pressing the two pressing blocks 14, the two pressing blocks 14 can be brought closer to each other and squeeze the third spring 16. The third spring 16 changes from its natural state to a compressed state. At this time, the opposite ends of the two pressing blocks 14 disengage from the two corresponding limiting teeth 15. Thus, the vertical height of the pillow 6 can be changed by adjusting the position of the support rod 2 inside the mounting shell 1.

[0024] like Figure 1 and Figure 2As shown, the support rod 2 has a sliding mounting rod 3 facing the side of the human body to lean against. A pillow 6 is rotatably mounted on the mounting rod 3 facing the side of the human body to lean against. The mounting rod 3 has several insertion holes 4 arranged along its length. An insertion block 5 slides through the support rod 2. The support rod 2 has a locking assembly for pushing the insertion block 5 and engaging it with one of the insertion holes 4. The locking assembly includes a guide rod 7, a push rod 8, a first spring 9, a fixing bracket 10, and a second spring 11. The support rod 2 has a first sliding groove 12, and the guide rod 7 is fixed within the first sliding groove 12. The insertion block 5 has a slot 13. The push rod 8 slides within the first sliding groove 12 and is slidably connected to the guide rod 7. One end of the push rod 8 slides through the slot 13 and is used to move the insertion block 5 into the insertion hole 4. The two ends of the first spring 9 are respectively connected to the first sliding groove 11. The inner wall of the guide rod 7 is fixedly connected to the push rod 8, and the first spring 9 is sleeved on the outer wall of the guide rod 7. The fixed frame 10 is fixedly mounted on the support rod 2, and the insert 5 is slidably mounted on the fixed frame 10. The two ends of the second spring 11 are fixedly connected to the inner wall of the fixed frame 10 and the top of the insert 5, respectively. In the initial state, the push rod 8 is inserted into the slot 13 of the insert 5. At this time, the first spring 9 is in the natural state, and the second spring 11 is in the stretched state. The elastic coefficient of the first spring 9 is greater than that of the second spring 11. When it is necessary to remove the insert 5 from the insertion hole 4, the first spring 9 can be compressed by moving the push rod 8. The insert 5 is removed from the insertion hole 4 under the tension of the second spring 11, so that the position of the mounting rod 3 can be moved in the support rod 2. After the mounting rod 3 is moved into place, the push rod 8 can be pushed back into the slot 13 of the insert 5. The end of the push rod 8 near the slot 13 is inclined, and the slot 13 is inclined to accommodate the end of the push rod 8.

[0025] like Figure 1 and Figure 4 As shown, a first rotating shaft 17 is fixedly installed at the end of the mounting rod 3 away from the support rod 2. A connecting rod 18 is provided on the pillow 6. The connecting rod 18 is rotatably mounted on the first rotating shaft 17. The connecting rod 18 can be rotated through the first rotating shaft 17, thereby expanding the rotation range of the pillow 6. Several elastic rubber strips 19 are fixedly installed on the inner ring of the connection between the connecting rod 18 and the first rotating shaft 17. Several grooves 20 are opened on the outer wall of the first rotating shaft 17 corresponding to the elastic rubber strips 19. Several elastic rubber strips 19 slide against several grooves 20 respectively. The setting of elastic rubber strips 19 and grooves 20 can provide a certain damping feeling when the connecting rod 18 rotates on the first rotating shaft 17.

[0026] like Figure 1 and Figure 5As shown, a cavity 21 is provided on the connecting rod 18, and a fixed rod 22 is slidably provided in the cavity 21. The pillow 6 is rotatably mounted on the fixed rod 22. A fourth spring 23 is provided in the cavity 21, and the two ends of the fourth spring 23 are respectively fixed to the inner wall of the cavity 21 and the end of the fixed rod 22. The fourth spring 23 can provide a certain cushioning when leaning against the pillow 6.

[0027] like Figure 1 and Figure 6 As shown, a second rotating shaft 24 is fixedly provided at the end of the fixed rod 22 away from the connecting rod 18. The pillow 6 is rotatably mounted on the second rotating shaft 24. The rotation range of the pillow 6 can be further expanded by the setting of the second rotating shaft 24.

[0028] Working principle:

[0029] When the user needs to change the vertical height of the support rod 2, the user presses the two pressing blocks 14. The two pressing blocks 14 move closer to each other, thereby disengaging the two pressing blocks 14 from the two corresponding limiting teeth 15 and changing the third spring 16 from its natural state to its compressed state. Then the user can move the support rod 2 vertically within the mounting shell 1. When the support rod 2 is moved to the appropriate height, the user releases the two pressing blocks 14. Under the action of the third spring 16, the two pressing blocks 14 move away from each other and re-engage with the two corresponding limiting teeth 15, thereby changing the vertical height of the support rod 2 within the mounting shell 1, and thus changing the vertical height position of the pillow 6.

[0030] When the user needs to change the horizontal position of the pillow 6, the user pulls the push rod 8, which moves within the first slide groove 12. This causes the first spring 9 to change from its natural state to a compressed state. At this time, the push rod 8 exits from the slot 13 of the insert 5. Since the insert 5 is no longer engaged by the push rod 8 and the second spring 11 is in a stretched state, the insert 5 moves vertically within the fixing bracket 10 under the action of the second spring 11. This disengages the insert 5 from the insert 5 on the mounting rod 3. The user can then move the mounting rod 3 within the support rod 2. When the mounting rod 3 is in the appropriate position, the user releases the push rod 8, which re-enters the slot 13 of the insert 5 under the action of the first spring 9. The insert 5 is then re-engaged with one of the insertion holes 4 on the mounting rod 3 by the push of the push rod 8, thus fixing the position of the mounting rod 3 on the support rod 2 and completing the horizontal movement of the pillow 6.

[0031] When it is necessary to expand the rotation range of the pillow 6, the user can change the rotation direction of the connecting rod 18 on the mounting rod 3 through the first pivot 17, and the groove 20 on the first pivot 17 and the elastic rubber strip 19 on the connecting rod 18 can provide a certain damping feel when the connecting rod 18 rotates.

[0032] When it is necessary to further expand the rotation range of the pillow 6, the user can rotate the pillow 6 to the position of the connecting rod 18 via the second pivot 24, thereby further expanding the rotation range of the pillow 6.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An adjustable office chair headrest, characterized by, The utility model provides an office chair, including installation shell (1) for being connected with office chair and support rod (2) of sliding through to the inside of installation shell (1), the installation rod (3) of sliding of inside support rod (2) is arranged to the side of human body and leans on, a plurality of insertion hole (4) are arranged on the installation rod (3) and are arranged along the length direction of installation rod (3), the insertion block (5) of sliding through is arranged on support rod (2), the support rod (2) is equipped with the clamping assembly for pushing insertion block (5) and makes insertion block (5) with one of insertion hole (4) clamping, the installation rod (3) is arranged on the side of human body and leans on and rotates and is equipped with the backrest (6), the installation shell (1) is equipped with the adjusting assembly for adjusting the vertical height of support rod (2), the clamping assembly includes guide rod (7), push rod (8), first spring (9), fixed frame (10) and second spring (11), the first sliding slot (12) is arranged on the support rod (2), the guide rod (7) is fixed in the first sliding slot (12), the insertion slot (13) is arranged on the insertion block (5), the push rod (8) is slidably arranged in the first sliding slot (12) and the push rod (8) is slidably connected with the guide rod (7), one end of the push rod (8) is slidably arranged in the insertion slot (13), and the push rod (8) is used to move the insertion block (5) into the insertion hole (4), the first spring (9) is fixedly connected with the inner wall of the first sliding slot (12) and the push rod (8) respectively, and the first spring (9) is sleeved on the outer wall of the guide rod (7), the fixed frame (10) is fixedly arranged on the support rod (2), the insertion block (5) is slidably arranged on the fixed frame (10), the second spring (11) is fixedly connected with the inner wall of the fixed frame (10) and the top of the insertion block (5) respectively, the adjusting assembly includes two pressing blocks (14), two limit teeth (15) and a third spring (16), the two pressing blocks (14) are slidably arranged through the installation shell (1) and extend into the installation shell (1), the two limit teeth (15) are fixedly arranged on the bottom of the opposite sides of the support rod (2), the opposite ends of the two pressing blocks (14) that extend into the installation shell (1) are respectively clamped with the opposite side walls of the two limit teeth (15), and the two ends of the third spring (16) are fixedly arranged between the two pressing blocks (14).

2. An adjustable office chair headrest according to claim 1, characterized in that: The first rotating shaft (17) is fixedly arranged on the end of the installation rod (3) away from the support rod (2), the connecting rod (18) is arranged on the backrest (6), and the connecting rod (18) is rotatably arranged on the first rotating shaft (17).

3. An adjustable office chair headrest according to claim 2, wherein: A plurality of elastic rubber strips (19) are fixedly arranged on the inner ring of the connecting portion of the connecting rod (18) and the first rotating shaft (17), a plurality of grooves (20) are formed in the outer wall of the first rotating shaft (17) corresponding to the elastic rubber strips (19), and the plurality of elastic rubber strips (19) are slidably abutted with the plurality of grooves (20) respectively.

4. An adjustable office chair headrest according to claim 2, wherein: A cavity (21) is formed in the connecting rod (18), a fixing rod (22) is slidably arranged in the cavity (21), the backrest (6) is rotatably arranged on the fixing rod (22), a fourth spring (23) is arranged in the cavity (21) and the two ends of the fourth spring (23) are fixedly connected with the inner wall of the cavity (21) and the end of the fixing rod (22) respectively.

5. An adjustable office chair headrest according to claim 4, wherein: A second rotating shaft (24) is fixedly arranged at the end of the fixing rod (22) away from the connecting rod (18), and the backrest (6) is rotatably arranged on the second rotating shaft (24).

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