An adjustable headrest for an office chair

Abstract

The utility model discloses an adjustable headrest for office chair relates to office chair headrest technical field, include: headrest framework, headrest framework is used for the outer cladding shape support of headrest, headrest mounting buckle, headrest mounting buckle is used for installing headrest framework on the chair, floating adjustment component, floating adjustment component sets up between headrest framework and headrest mounting buckle, and floating adjustment component is used for adjusting the use height and angle of headrest framework in a certain range, and floating adjustment component includes two aluminum alloy poles fixed in the inboard of headrest framework and the positioning buckle plate fixed on the top of headrest mounting buckle. The utility model discloses the height and angle of headrest framework can be adjusted in a certain range through the floating adjustment component of setting three groups of different, according to the different height and figure of user, can adjust the chair headrest to the position of the head and neck of user and use the comfort degree optimum, effectively improves headrest applicability and flexibility.

Description

Technical Field

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

[0002] Office chairs, as the name suggests, refer to various chairs provided for convenience in daily work and social activities. Their core function is to provide comfort and convenience while working. According to authoritative sources, they include, but are not limited to, executive chairs / mid-level chairs, staff chairs, and conference chairs / visitor chairs / training chairs.

[0003] Most office chairs have headrests added to the backrest for comfort when leaning back. However, most headrests are fixed to the chair and cannot be adjusted to a comfortable position or angle for users of different heights and body types, resulting in low applicability and flexibility. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable headrest for office chairs, which solves the problem that existing adjustable headrests for office chairs cannot be adjusted to a comfortable position and angle according to users of different heights and body types, resulting in low applicability and flexibility.

[0005] This utility model solves the above-mentioned technical problems through the following technical solution: This utility model includes:

[0006] A headrest frame, which is used to support the shape of the outer covering layer of the headrest;

[0007] A headrest mounting buckle, used to mount a headrest frame onto a chair;

[0008] A floating adjustment component is disposed between the headrest frame and the headrest mounting buckle. The floating adjustment component is used to adjust the height and angle of the headrest frame within a certain range.

[0009] Preferably, the floating adjustment assembly includes two aluminum alloy rods fixed to the inner side of the headrest frame and a positioning buckle plate fixed above the headrest mounting buckle. A lifting column slides between the two aluminum alloy rods. The lifting column has two adjustment slots inside. Each of the two adjustment slots is provided with a plastic damping block, a pressure spring and a pressure adjustment screw.

[0010] Preferably, the lifting column has mounting holes at both ends, the positioning buckle plate has two inner grooves on its inner side, the lifting column has two connecting strips fixed to its exterior, the two connecting strips are respectively engaged in the two inner grooves, the positioning buckle plate has swivel screws at both ends, and a floating spring is provided between the lifting column and the positioning buckle plate.

[0011] Preferably, the floating adjustment assembly includes a connector fixed to the headrest frame and a connecting plate fixed to the headrest mounting buckle. A plurality of stop strips are provided on one side of the connecting plate. A sliding sleeve is provided on the outside of the connecting plate. An elastic limiting cover is provided on the inside of the sliding sleeve. The sliding sleeve and the connector are connected by a rotating shaft.

[0012] Preferably, the pivot component is used to adjust the use angle of the headrest frame within a certain range. The pivot component includes a plastic pivot fixed to one end of the sliding sleeve, a limiting screw disposed between the sliding sleeve and the connector, and two rubber springs disposed between the sliding sleeve and the connector. The connector rotates on the plastic pivot.

[0013] Preferably, the floating adjustment assembly includes a fixing strip fixed to the headrest mounting buckle and a mounting head fixed to the headrest frame. The fixing strip is fitted with a mounting sleeve, and the mounting sleeve is provided with a cover on the inner side. The cover is provided with a clamping screw and a plastic friction block on the inner side. The mounting sleeve and the mounting head are connected by an adjusting shaft component.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] With three different floating adjustment components, the height and angle of the headrest frame can be adjusted within a certain range. Depending on the user's height and body type, the chair headrest can be adjusted to the position where the user's head and neck are most comfortable, effectively improving the headrest's applicability and flexibility. Attached Figure Description

[0016] Figure 1 This is a front view of Embodiment 1 of this utility model;

[0017] Figure 2 for Figure 1 A sectional view;

[0018] Figure 3 for Figure 1 A diagram illustrating the breakdown;

[0019] Figure 4 for Figure 2 The left view;

[0020] Figure 5 This is a front view of Embodiment 2 of this utility model;

[0021] Figure 6 for Figure 5 A sectional view;

[0022] Figure 7 for Figure 5 A diagram illustrating the breakdown;

[0023] Figure 8 This is a front view of Embodiment 3 of this utility model;

[0024] Figure 9 for Figure 8 A sectional view;

[0025] Figure 10 for Figure 9 A breakdown diagram.

[0026] The numbers in the diagram represent:

[0027] 1. Headrest frame; 2. Headrest mounting buckle; 3. Floating adjustment assembly; 31. Aluminum alloy rod; 32. Positioning buckle plate; 33. Lifting column; 34. Adjustment groove; 35. Plastic damping block; 36. Pressure spring; 37. Pressure adjusting screw; 38. Mounting hole; 39. Inner groove; 310. Connecting strip; 311. Rotary shaft screw; 312. Floating spring; 301. Connecting head; 302. Connecting plate; 303. Stop bar; 304. Sliding sleeve; 305. Elastic limit cover; 306. Plastic rotating shaft; 307. Limit screw; 308. Rubber spring; 3001. Fixing strip; 3002. Mounting head; 3003. Mounting sleeve; 3004. Cover body; 3005. Pressing screw; 3006. Plastic friction block. Detailed Implementation

[0028] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0029] This embodiment provides a technical solution: an adjustable headrest for an office chair, such as... Figure 1-10 As shown, the device includes a headrest frame 1, a headrest mounting buckle 2, and three different floating adjustment components 3. The headrest frame 1 is used to support the shape of the outer layer of the headrest, the headrest mounting buckle 2 is used to install the headrest frame 1 on the chair, and the floating adjustment components 3 are set between the headrest frame 1 and the headrest mounting buckle 2. The floating adjustment components 3 are used to adjust the height and angle of the headrest frame 1 within a certain range.

[0030] Example 1

[0031] The floating adjustment assembly 3 includes two aluminum alloy rods 31 fixed to the inside of the headrest frame 1 and a positioning buckle plate 32 fixed above the headrest mounting buckle 2. A lifting column 33 slides between the two aluminum alloy rods 31. The lifting column 33 is installed on the two aluminum alloy rods 31 by two screws. The lifting column 33 has two adjustment grooves 34 inside. Each of the two adjustment grooves 34 is provided with a plastic damping block 35, a pressure spring 36 and a pressure adjustment screw 37. Both ends of the lifting column 33 are provided with mounting holes 38. The inside of the positioning buckle plate 32 is provided with two inner grooves 39. Two connecting strips 310 are fixed to the outside of the lifting column 33. The two connecting strips 310 are respectively locked inside the two inner grooves 39. Both ends of the positioning buckle plate 32 are provided with pivot screws 311. A floating spring 312 is provided between the lifting column 33 and the positioning buckle plate 32.

[0032] The pressure on the pressure spring 36 and the plastic damping block 35 can be changed by adjusting the pressure screw 37, thereby changing the fastening force between the lifting column 33 and the aluminum alloy rod 31, so that the aluminum alloy rod 31 on the headrest frame 1 can slide up and down along the lifting column 33, changing the height of the headrest frame 1. Then, the plastic damping block 35 is pressed tightly by adjusting the pressure screw 37, thereby firmly fixing the aluminum alloy rod 31 and the lifting column 33, thus completing the headrest height adjustment.

[0033] The tightness between the lifting column 33 and the positioning buckle plate 32 can be adjusted by rotating the shaft screw 311. This allows the lifting column 33 to drive the aluminum alloy rod 31 and the headrest frame 1 to rotate. The rotation angle of the headrest frame 1 can be limited by the inner groove 39 and the floating spring 312. After the angle is rotated to a suitable position, the rotating shaft screw 311 can be tightened to fix the headrest frame 1. The angle fluctuation range is within 15 degrees up and down.

[0034] Example 2

[0035] The floating adjustment component 3 includes a connector 301 fixed to the headrest frame 1 and a connecting plate 302 fixed to the headrest mounting buckle 2. A plurality of equally spaced stop bars 303 are provided on one side of the connecting plate 302. A sliding sleeve 304 is fitted over the outside of the connecting plate 302. An elastic limiting cover 305 is provided on the inner side of the sliding sleeve 304. An elastic limiting head is provided on the elastic limiting cover 305. The elastic limiting head and the stop bars 303 interlock to restrict the position of the sliding sleeve 304 and the connecting plate 302. The sliding sleeve 304 and the connector 301 are connected by a rotating shaft. The rotating shaft is used to adjust the usage angle of the headrest frame 1 within a certain range. The rotating shaft includes a plastic rotating shaft 306 fixed to one end of the sliding sleeve 304, a limiting screw 307 positioned between the sliding sleeve 304 and the connector 301, and two rubber springs 308 positioned between the sliding sleeve 304 and the connector 301. The connector 301 rotates on the plastic rotating shaft 306.

[0036] Pulling the sliding sleeve 304 upwards, the elastic limiting head on the elastic limiting cover 305 will move with it as the sliding sleeve 304 and the connecting plate 302 slide relative to each other. After the height of the headrest frame 1 is adjusted to a suitable position, the elastic limiting head and two adjacent stop bars 303 lock together to limit the relative position of the sliding sleeve 304 and the connecting plate 302, thereby changing the height of the headrest. The lifting range is within 35mm. The angle of the headrest frame 1 can be changed by rotating the connecting head 301 on the plastic rotating shaft 306, and the connecting head 301 can be fixed by the limiting screw 307. The angle of the headrest can be lowered by up to 15 degrees.

[0037] Example 3

[0038] The floating adjustment component 3 includes a fixing strip 3001 fixed to the headrest mounting buckle 2 and a mounting head 3002 fixed to the headrest frame 1. The fixing strip 3001 is fitted with a mounting sleeve 3003. The mounting sleeve 3003 is provided with a cover 3004 on the inner side. The cover 3004 is provided with a clamping screw 3005 and a plastic friction block 3006 on the inner side. The mounting sleeve 3003 and the mounting head 3002 are connected by an adjusting shaft component. The adjusting shaft component and the rotating shaft component in Embodiment 2 have the same structure and usage.

[0039] Loosen the clamping screw 3005 to reduce the pressure applied to the plastic friction block 3006, thereby reducing the tightness between the mounting sleeve 3003 and the fixing strip 3001. This allows the mounting sleeve 3003 and the fixing strip 3001 to slide relative to each other, thereby changing the height of the headrest frame 1 through the adjusting shaft component. The adjustment range between the mounting sleeve 3003 and the fixing strip 3001 is within 50mm. After adjustment, tighten the clamping screw 3005 to increase its pressure on the plastic friction block 3006. The plastic friction block 3006 increases the friction between the mounting sleeve 3003 and the fixing strip 3001, thus preventing them from sliding relative to each other. The method for adjusting the angle of the headrest frame 1 is the same as in Embodiment 2.

[0040] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. An adjustable headrest for an office chair, characterized in that, include: A headrest frame (1) is used to support the shape of the outer layer of the headrest. Headrest mounting buckle (2), the headrest mounting buckle (2) is used to mount the headrest frame (1) on the chair; A floating adjustment component (3) is disposed between the headrest frame (1) and the headrest mounting buckle (2). The floating adjustment component (3) is used to adjust the height and angle of the headrest frame (1) within a certain range.

2. The adjustable headrest for office chairs as described in claim 1, characterized in that, The floating adjustment assembly (3) includes two aluminum alloy rods (31) fixed to the inside of the headrest frame (1) and a positioning buckle plate (32) fixed above the headrest mounting buckle (2). A lifting column (33) slides between the two aluminum alloy rods (31). Two adjustment slots (34) are opened inside the lifting column (33). A plastic damping block (35), a pressure spring (36) and a pressure adjustment screw (37) are provided inside the two adjustment slots (34).

3. The adjustable headrest for office chairs as described in claim 2, characterized in that, The lifting column (33) has mounting holes (38) at both ends. The positioning buckle plate (32) has two inner grooves (39) on its inner side. The lifting column (33) has two connecting strips (310) fixed to its exterior. The two connecting strips (310) are respectively locked inside the two inner grooves (39). The positioning buckle plate (32) has rotating screws (311) at both ends. A floating spring (312) is provided between the lifting column (33) and the positioning buckle plate (32).

4. The adjustable headrest for an office chair as described in claim 1, characterized in that, The floating adjustment component (3) includes a connector (301) fixed to the headrest frame (1) and a connecting plate (302) fixed to the headrest mounting buckle (2). A plurality of stop bars (303) are arranged at equal intervals on one side of the connecting plate (302). A sliding sleeve (304) is sleeved on the outside of the connecting plate (302). An elastic limiting cover (305) is provided on the inside of the sliding sleeve (304). The sliding sleeve (304) and the connector (301) are connected by a rotating shaft.

5. The adjustable headrest for an office chair as described in claim 4, characterized in that, The pivot component is used to adjust the use angle of the headrest frame (1) within a certain range. The pivot component includes a plastic pivot (306) fixed to one end of the sliding sleeve (304), a limiting screw (307) set between the sliding sleeve (304) and the connector (301), and two rubber springs (308) set between the sliding sleeve (304) and the connector (301). The connector (301) rotates on the plastic pivot (306).

6. The adjustable headrest for an office chair as described in claim 1, characterized in that, The floating adjustment component (3) includes a fixing strip (3001) fixed to the headrest mounting buckle (2) and a mounting head (3002) fixed to the headrest frame (1). The fixing strip (3001) is fitted with a mounting sleeve (3003). The mounting sleeve (3003) is provided with a cover (3004) on the inner side. The cover (3004) is provided with a clamping screw (3005) and a plastic friction block (3006) on the inner side. The mounting sleeve (3003) and the mounting head (3002) are connected by an adjusting shaft component.

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