US20240074585A1 - Headrest Adjusting Structure for Office Chair - Google Patents
Headrest Adjusting Structure for Office Chair Download PDFInfo
- Publication number
- US20240074585A1 US20240074585A1 US17/902,052 US202217902052A US2024074585A1 US 20240074585 A1 US20240074585 A1 US 20240074585A1 US 202217902052 A US202217902052 A US 202217902052A US 2024074585 A1 US2024074585 A1 US 2024074585A1
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- US
- United States
- Prior art keywords
- locking member
- pivot portion
- headrest
- adjusting
- adjusting lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008901 benefit Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 240000000528 Ricinus communis Species 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/38—Support for the head or the back for the head
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/38—Support for the head or the back for the head
- A47C7/383—Detachable or loose head- or neck-supports, e.g. horse-shoe shaped
Definitions
- the present invention relates to an adjusting mechanism and, more particularly, to a headrest adjusting structure for an office chair.
- a conventional office chair comprises a seat, a stand, multiple castors, a back, and two armrests.
- the conventional office chair does not have a headrest so that the user's head is not supported.
- the conventional office chair may be provided with a neck cushion or a backrest.
- the neck cushion or backrest does not have an adjusting function so that the user easily feels uncomfortable.
- the conventional office chair may be provided with a head cushion.
- the primary objective of the present invention is to provide a headrest adjusting structure for an office chair which does not have a headrest or a head cushion.
- a headrest adjusting structure for an office chair comprising a headrest member, a first adjusting lever, a holding unit, a second adjusting lever, a first locking member, a second locking member, and a third locking member.
- the headrest member is provided with a first pivot portion.
- the first adjusting lever has a first end provided with a second pivot portion and a second end provided with a third pivot portion.
- the holding unit includes an upper jaw, a lower jaw, and an adjusting bolt.
- the upper jaw is provided with a slideway and a passage.
- the lower jaw is provided with a slide. The slide is inserted into and slidably mounted in the slideway so that the upper jaw and the lower jaw are moved relative to each other.
- the adjusting bolt extends through the upper jaw and the lower jaw to lock the upper jaw and the lower jaw.
- the second adjusting lever has a first end provided with a fourth pivot portion and a second end passing through the passage of the upper jaw.
- the first locking member extends through the first pivot portion and the second pivot portion, so that the headrest member and the first adjusting lever are connected pivotally and are pivoted about the first locking member.
- the first locking member positions the headrest member in place.
- the second locking member extends through the third pivot portion and the fourth pivot portion, so that the first adjusting lever and the second adjusting lever are connected pivotally and are pivoted about the second locking member.
- the second locking member positions the first adjusting lever in place.
- the third locking member extends through the passage of the upper jaw and rests on the second adjusting lever, so that the second adjusting lever is positioned by the third locking member.
- the headrest adjusting structure is mounted on the office chair without providing a headrest so that the user's head is supported exactly.
- the user can adjust the height, the forward or backward position, and the inclined angle of the headrest member according to the practical requirement, thereby providing a comfortable sensation to the user.
- FIG. 1 is a perspective view of a headrest adjusting structure in accordance with the preferred embodiment of the present invention.
- FIG. 2 is a left side view of the headrest adjusting structure in accordance with the preferred embodiment of the present invention.
- FIG. 3 is a perspective view of a holding unit of the headrest adjusting structure in accordance with the preferred embodiment of the present invention.
- FIG. 4 is a left side view of the headrest adjusting structure for an office chair in accordance with the preferred embodiment of the present invention.
- FIG. 5 is a front view of the headrest adjusting structure for the office chair in accordance with the preferred embodiment of the present invention.
- a headrest adjusting structure 100 for an office chair in accordance with the preferred embodiment of the present invention comprises a headrest member 10 , a first adjusting lever 20 , a holding unit 30 , a second adjusting lever 40 , a first locking member 50 , a second locking member 60 , and a third locking member 70 .
- the headrest member 10 is provided with a first pivot portion 11 .
- the first adjusting lever 20 has a first end (the upper end) provided with a second pivot portion 21 and a second end (the lower end) provided with a third pivot portion 22 .
- the holding unit 30 includes an upper jaw (or holder) 31 , a lower jaw (or holder) 32 , and an adjusting bolt 33 .
- the upper jaw 31 is provided with a slideway 311 and a passage 312 .
- the lower jaw 32 is provided with a slide 321 .
- the slide 321 is inserted into and slidably mounted in the slideway 311 so that the upper jaw 31 and the lower jaw 32 are moved relative to each other.
- the adjusting bolt 33 extends through the upper jaw 31 and the lower jaw 32 to lock the upper jaw 31 and the lower jaw 32 .
- the second adjusting lever 40 has a first end (the upper end) provided with a fourth pivot portion 41 and a second end (the lower end) passing through the passage 312 of the upper jaw 31 .
- the first locking member 50 extends through the first pivot portion 11 and the second pivot portion 21 , so that the headrest member 10 and the first adjusting lever 20 are connected pivotally and are pivoted about the first locking member 50 .
- the first locking member 50 positions the headrest member 10 in place.
- the second locking member 60 extends through the third pivot portion 22 and the fourth pivot portion 41 , so that the first adjusting lever 20 and the second adjusting lever 40 are connected pivotally and are pivoted about the second locking member 60 .
- the second locking member 60 positions the first adjusting lever 20 in place.
- the third locking member 70 extends through the passage 312 of the upper jaw 31 and rests on (or pressing) the second adjusting lever 40 , so that the second adjusting lever 40 is positioned by the third locking member 70 .
- the upper jaw 31 and the lower jaw 32 are moved relative to each other in parallel with a first direction F 1 (such as a vertical direction).
- the adjusting bolt 33 extends through the upper jaw 31 and the lower jaw 32 in parallel with the first direction F 1 .
- the second adjusting lever 40 has a lengthwise direction in parallel with the first direction F 1 .
- the first locking member 50 extends through the first pivot portion 11 and the second pivot portion 21 in a direction perpendicular to the first direction F 1 .
- the second locking member 60 extends through the third pivot portion 22 and the fourth pivot portion 41 in a direction perpendicular to the first direction F 1 .
- the direction of the second locking member 60 is in parallel with that of the first locking member 50 .
- the third locking member 70 extends through the passage 312 of the upper jaw 31 in a direction perpendicular to the first direction F 1 .
- the direction of the third locking member 70 is perpendicular to that of the second locking member 60 .
- the upper jaw 31 and the lower jaw 32 are made of plastic material with a hardness.
- the first pivot portion 11 is located at a back of the headrest member 10 .
- the first end of the second adjusting lever 40 is in parallel with the first direction F 1
- the second end of the second adjusting lever 40 is in parallel with the first direction F 1 .
- the headrest adjusting structure 100 is mounted on the top of a seat back 91 of an office chair 90 .
- the upper jaw 31 and the lower jaw 32 are moved relative to each other to clamp the top edge of the seat back 91 .
- the upper jaw 31 and the lower jaw 32 are locked by the adjusting bolt 33 so that the upper jaw 31 and the lower jaw 32 are positioned exactly.
- the second adjusting lever 40 is moved upward or downward to adjust the height of the headrest member 10 .
- the second adjusting lever 40 is locked by the third locking member 70 so that the second adjusting lever 40 is positioned exactly.
- the third pivot portion 22 is pivoted relative to the fourth pivot portion 41 to adjust the angle of the first adjusting lever 20 and to adjust the forward or backward position of the headrest member 10 .
- the first adjusting lever 20 is locked by the second locking member 60 so that the first adjusting lever 20 is positioned exactly.
- the first pivot portion 11 is pivoted relative to the second pivot portion 21 to adjust the angle of the headrest member 10 .
- the headrest member 10 is locked by the first locking member 50 so that the headrest member 10 is positioned exactly.
- the headrest adjusting structure 100 is mounted on the office chair 90 without providing a headrest so that the user's head is supported exactly.
- the user can adjust the height, the forward or backward position, and the inclined angle of the headrest member 10 according to the practical requirement, thereby providing a comfortable sensation to the user.
Abstract
A headrest adjusting structure for an office chair includes a headrest member having a first pivot portion, a first adjusting lever having a second pivot portion and a third pivot portion, a holding unit having an upper jaw with a slideway, a lower jaw with a slide slidably mounted in the slideway, and an adjusting bolt extending through the upper jaw and the lower jaw, a second adjusting lever having a fourth pivot portion, a first locking member extending through the first pivot portion and the second pivot portion, a second locking member extending through the third pivot portion and the fourth pivot portion, and a third locking member extending through the passage of the upper jaw and rests on the second adjusting lever.
Description
- The present invention relates to an adjusting mechanism and, more particularly, to a headrest adjusting structure for an office chair.
- A conventional office chair comprises a seat, a stand, multiple castors, a back, and two armrests. However, the conventional office chair does not have a headrest so that the user's head is not supported. Thus, the user easily has a sore neck during a long-term utilization. The conventional office chair may be provided with a neck cushion or a backrest. However, the neck cushion or backrest does not have an adjusting function so that the user easily feels uncomfortable. Alternatively, the conventional office chair may be provided with a head cushion. However, it costs much to mount the head cushion on the conventional office chair without a headrest.
- The primary objective of the present invention is to provide a headrest adjusting structure for an office chair which does not have a headrest or a head cushion.
- In accordance with the present invention, there is provided a headrest adjusting structure for an office chair, comprising a headrest member, a first adjusting lever, a holding unit, a second adjusting lever, a first locking member, a second locking member, and a third locking member. The headrest member is provided with a first pivot portion. The first adjusting lever has a first end provided with a second pivot portion and a second end provided with a third pivot portion. The holding unit includes an upper jaw, a lower jaw, and an adjusting bolt. The upper jaw is provided with a slideway and a passage. The lower jaw is provided with a slide. The slide is inserted into and slidably mounted in the slideway so that the upper jaw and the lower jaw are moved relative to each other. The adjusting bolt extends through the upper jaw and the lower jaw to lock the upper jaw and the lower jaw. The second adjusting lever has a first end provided with a fourth pivot portion and a second end passing through the passage of the upper jaw. The first locking member extends through the first pivot portion and the second pivot portion, so that the headrest member and the first adjusting lever are connected pivotally and are pivoted about the first locking member. The first locking member positions the headrest member in place. The second locking member extends through the third pivot portion and the fourth pivot portion, so that the first adjusting lever and the second adjusting lever are connected pivotally and are pivoted about the second locking member. The second locking member positions the first adjusting lever in place. The third locking member extends through the passage of the upper jaw and rests on the second adjusting lever, so that the second adjusting lever is positioned by the third locking member.
- According to the primary advantage of the present invention, the headrest adjusting structure is mounted on the office chair without providing a headrest so that the user's head is supported exactly.
- According to another advantage of the present invention, the user can adjust the height, the forward or backward position, and the inclined angle of the headrest member according to the practical requirement, thereby providing a comfortable sensation to the user.
- Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
-
FIG. 1 is a perspective view of a headrest adjusting structure in accordance with the preferred embodiment of the present invention. -
FIG. 2 is a left side view of the headrest adjusting structure in accordance with the preferred embodiment of the present invention. -
FIG. 3 is a perspective view of a holding unit of the headrest adjusting structure in accordance with the preferred embodiment of the present invention. -
FIG. 4 is a left side view of the headrest adjusting structure for an office chair in accordance with the preferred embodiment of the present invention. -
FIG. 5 is a front view of the headrest adjusting structure for the office chair in accordance with the preferred embodiment of the present invention. - Referring to the drawings and initially to
FIGS. 1-3 , aheadrest adjusting structure 100 for an office chair in accordance with the preferred embodiment of the present invention comprises aheadrest member 10, a first adjustinglever 20, aholding unit 30, a second adjustinglever 40, afirst locking member 50, asecond locking member 60, and athird locking member 70. - The
headrest member 10 is provided with a first pivot portion 11. - The first adjusting
lever 20 has a first end (the upper end) provided with asecond pivot portion 21 and a second end (the lower end) provided with athird pivot portion 22. - The
holding unit 30 includes an upper jaw (or holder) 31, a lower jaw (or holder) 32, and an adjustingbolt 33. - The
upper jaw 31 is provided with aslideway 311 and apassage 312. - The
lower jaw 32 is provided with aslide 321. Theslide 321 is inserted into and slidably mounted in theslideway 311 so that theupper jaw 31 and thelower jaw 32 are moved relative to each other. - The adjusting
bolt 33 extends through theupper jaw 31 and thelower jaw 32 to lock theupper jaw 31 and thelower jaw 32. - The second adjusting
lever 40 has a first end (the upper end) provided with afourth pivot portion 41 and a second end (the lower end) passing through thepassage 312 of theupper jaw 31. - The
first locking member 50 extends through the first pivot portion 11 and thesecond pivot portion 21, so that theheadrest member 10 and the first adjustinglever 20 are connected pivotally and are pivoted about thefirst locking member 50. Thefirst locking member 50 positions theheadrest member 10 in place. - The
second locking member 60 extends through thethird pivot portion 22 and thefourth pivot portion 41, so that the first adjustinglever 20 and the second adjustinglever 40 are connected pivotally and are pivoted about thesecond locking member 60. Thesecond locking member 60 positions the first adjustinglever 20 in place. - The
third locking member 70 extends through thepassage 312 of theupper jaw 31 and rests on (or pressing) the second adjustinglever 40, so that the second adjustinglever 40 is positioned by thethird locking member 70. - In the preferred embodiment of the present invention, the
upper jaw 31 and thelower jaw 32 are moved relative to each other in parallel with a first direction F1 (such as a vertical direction). The adjustingbolt 33 extends through theupper jaw 31 and thelower jaw 32 in parallel with the first direction F1. - In the preferred embodiment of the present invention, the second
adjusting lever 40 has a lengthwise direction in parallel with the first direction F1. - In the preferred embodiment of the present invention, the
first locking member 50 extends through the first pivot portion 11 and thesecond pivot portion 21 in a direction perpendicular to the first direction F1. - In the preferred embodiment of the present invention, the
second locking member 60 extends through thethird pivot portion 22 and thefourth pivot portion 41 in a direction perpendicular to the first direction F1. The direction of thesecond locking member 60 is in parallel with that of thefirst locking member 50. - In the preferred embodiment of the present invention, the
third locking member 70 extends through thepassage 312 of theupper jaw 31 in a direction perpendicular to the first direction F1. The direction of thethird locking member 70 is perpendicular to that of thesecond locking member 60. - In the preferred embodiment of the present invention, the
upper jaw 31 and thelower jaw 32 are made of plastic material with a hardness. - In the preferred embodiment of the present invention, the first pivot portion 11 is located at a back of the
headrest member 10. - In the preferred embodiment of the present invention, the first end of the second adjusting
lever 40 is in parallel with the first direction F1, and the second end of the second adjustinglever 40 is in parallel with the first direction F1. - In operation, referring to
FIGS. 4 and 5 with reference toFIGS. 1-3 , theheadrest adjusting structure 100 is mounted on the top of aseat back 91 of anoffice chair 90. At this time, theupper jaw 31 and thelower jaw 32 are moved relative to each other to clamp the top edge of the seat back 91. Then, theupper jaw 31 and thelower jaw 32 are locked by the adjustingbolt 33 so that theupper jaw 31 and thelower jaw 32 are positioned exactly. Then, thesecond adjusting lever 40 is moved upward or downward to adjust the height of theheadrest member 10. Then, thesecond adjusting lever 40 is locked by thethird locking member 70 so that thesecond adjusting lever 40 is positioned exactly. Then, thethird pivot portion 22 is pivoted relative to thefourth pivot portion 41 to adjust the angle of the first adjustinglever 20 and to adjust the forward or backward position of theheadrest member 10. Then, the first adjustinglever 20 is locked by thesecond locking member 60 so that the first adjustinglever 20 is positioned exactly. Then, the first pivot portion 11 is pivoted relative to thesecond pivot portion 21 to adjust the angle of theheadrest member 10. Then, theheadrest member 10 is locked by the first lockingmember 50 so that theheadrest member 10 is positioned exactly. - Accordingly, the
headrest adjusting structure 100 is mounted on theoffice chair 90 without providing a headrest so that the user's head is supported exactly. In addition, the user can adjust the height, the forward or backward position, and the inclined angle of theheadrest member 10 according to the practical requirement, thereby providing a comfortable sensation to the user. - Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the scope of the invention.
Claims (8)
1. A headrest adjusting structure for an office chair, comprising:
a headrest member, a first adjusting lever, a holding unit, a second adjusting lever, a first locking member, a second locking member, and a third locking member;
wherein:
the headrest member is provided with a first pivot portion;
the first adjusting lever has a first end provided with a second pivot portion and a second end provided with a third pivot portion;
the holding unit includes an upper jaw, a lower jaw, and an adjusting bolt;
the upper jaw is provided with a slideway and a passage;
the lower jaw is provided with a slide;
the slide is inserted into and slidably mounted in the slideway so that the upper jaw and the lower jaw are moved relative to each other;
the adjusting bolt extends through the upper jaw and the lower jaw to lock the upper jaw and the lower jaw;
the second adjusting lever has a first end provided with a fourth pivot portion and a second end passing through the passage of the upper jaw;
the first locking member extends through the first pivot portion and the second pivot portion, so that the headrest member and the first adjusting lever are connected pivotally and are pivoted about the first locking member;
the first locking member positions the headrest member in place;
the second locking member extends through the third pivot portion and the fourth pivot portion, so that the first adjusting lever and the second adjusting lever are connected pivotally and are pivoted about the second locking member;
the second locking member positions the first adjusting lever in place; and
the third locking member extends through the passage of the upper jaw and rests on the second adjusting lever, so that the second adjusting lever is positioned by the third locking member.
2. The headrest adjusting structure for an office chair as claimed in claim 1 , wherein:
the upper jaw and the lower jaw are moved relative to each other in parallel with a first direction, and
the adjusting bolt extends through the upper jaw and the lower jaw in parallel with the first direction.
3. The headrest adjusting structure for an office chair as claimed in claim 2 , wherein the second adjusting lever has a lengthwise direction in parallel with the first direction.
4. The headrest adjusting structure for an office chair as claimed in claim 2 , wherein the first locking member extends through the first pivot portion and the second pivot portion in a direction perpendicular to the first direction.
5. The headrest adjusting structure for an office chair as claimed in claim 4 , wherein:
the second locking member extends through the third pivot portion and the fourth pivot portion in a direction perpendicular to the first direction; and
the direction of the second locking member is in parallel with that of the first locking member.
6. The headrest adjusting structure for an office chair as claimed in claim 4 , wherein:
the third locking member extends through the passage of the upper jaw in a direction perpendicular to the first direction; and
the direction of the third locking member is perpendicular to that of the second locking member.
7. The headrest adjusting structure for an office chair as claimed in claim 1 , wherein the upper jaw and the lower jaw are made of plastic material with a hardness.
8. The headrest adjusting structure for an office chair as claimed in claim 1 , wherein the first pivot portion is located at a back of the headrest member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US17/902,052 US20240074585A1 (en) | 2022-09-02 | 2022-09-02 | Headrest Adjusting Structure for Office Chair |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US17/902,052 US20240074585A1 (en) | 2022-09-02 | 2022-09-02 | Headrest Adjusting Structure for Office Chair |
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US20240074585A1 true US20240074585A1 (en) | 2024-03-07 |
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US17/902,052 Pending US20240074585A1 (en) | 2022-09-02 | 2022-09-02 | Headrest Adjusting Structure for Office Chair |
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