TWM634134U - Office chair headrest adjustment structure - Google Patents

Abstract

An adjustment structure for the headrest of an office chair, comprising: the headrest part has a first pivotal joint; the opposite ends of the first adjustment rod have a second pivotal joint and a third pivotal joint; the clamping part includes an upper jaw, a lower The jaws and the adjusting bolts, the upper jaw has a chute and a piercing part, the lower jaw has a slider embedded in the chute; the adjusting bolt is pierced through the upper jaw and the lower jaw; Four pivotal joints; the first locking piece passes through the first pivotal joint and the second pivotal joint, so that the headrest pivots around the first locking piece; the second locking piece passes through the third pivotal joint and the fourth pivotal part, so that the first adjusting rod pivots around the second locking part; one end of the third locking part is directed towards the passing part of the clamping part, penetrates through the passing part and abuts against the second adjusting rod, so that the first adjusting rod Two adjustment lever positioning.

Description

Office chair headrest adjustment structure

This creation relates to an adjustment structure of the headrest of an office chair, especially a headrest structure that can be set on an office chair without a headrest and can achieve multiple adjustments in height and inclination angle.

There are many forms of office chairs. In addition to whether the height of the seat can be adjusted, whether the inclination angle of the seat back can be adjusted, and whether it has armrests, it can be divided into two types: with headrest and without headrest.

For an office chair without a headrest, since the user's head is not leaned against, the user's neck is likely to be sore after long-term use.

Although the user can additionally set items such as a neck pillow and a backrest, these items cannot provide an adjustable function, so the comfort is still insufficient.

If you want to replace an office chair without a headrest with an office chair with a headrest, you have to pay a considerable cost.

Accordingly, how to develop an "office chair headrest adjustment structure" that can be installed on an office chair without a headrest and can achieve multiple adjustments in height and inclination angle is an urgent problem to be solved by people in the related technical field.

The author of this case has been specialized in the development and research of multifunctional office chairs for many years. He has a considerable understanding of whether various multifunctional office chairs can provide the most comfortable reclining for the human body. He will conduct in-depth discussions on the aforementioned analysis and actively In search of a solution, the creator of this case, in the spirit of excellence, continued to research and think, and finally completed the design of this creation after many tests and long-term efforts.

That is, the main purpose of this creation is to provide an office chair headrest adjustment structure, which can be arranged on an office chair without a headrest and can achieve multiple adjustments in height and inclination angle.

According to the above purpose, in a preferred embodiment, the office chair headrest adjustment structure described in this invention includes:

a headrest portion, which has a first pivot portion;

A first adjusting rod, its opposite ends respectively have a second pivot joint and a third pivot joint; a clamping member, comprising:

an upper jaw, which has a chute and a piercing portion;

The lower jaw has a slider, which is embedded in the chute, so that the upper jaw and the lower jaw can move relatively;

An adjusting bolt, which passes through the upper jaw and the lower jaw, and is used to lock the upper jaw and the lower jaw;

A second adjustment rod, one end of which has a fourth pivot joint, and the other end of which is pierced through the piercing portion of the clamping member;

A first locking piece is installed through the first pivotal joint and the second pivotal joint, so that the headrest and the first adjustment rod are pivotally connected to each other and pivot around the first locking piece, and the first lock Firmware positions the headrest;

A second locking piece is passed through the third pivoting part and the fourth pivoting part, so that the first adjusting rod and the second adjusting rod are pivotally connected to each other and pivot around the second locking part, and through the second the locking member positions the first adjustment lever; and

A third locking member, one end of which is directed toward the through part of the clamping part, passes through the through part and abuts against the second adjusting rod, so as to position the second adjusting rod.

In another preferred embodiment, the upper jaw and the lower jaw can move relative to each other parallel to a first direction, and the adjusting bolt is passed through the upper jaw and the lower jaw parallel to the first direction.

In another preferred embodiment, the length direction of the second adjustment rod is parallel to the first direction.

In another preferred embodiment, the first locking member is perpendicular to the first direction and passes through the first pivot portion and the second pivot portion.

In another preferred embodiment, the second locking member is perpendicular to the first direction and penetrates the third pivot portion and the fourth pivot portion. parallel to each other.

In another preferred embodiment, one end of the third locking member is perpendicular to the first direction and passes through the passing portion toward the holding member’s passing portion, and the passing direction of the third locking member is the same as the passing direction of the second locking member. perpendicular to each other.

In another preferred embodiment, the material of the upper jaw and the lower jaw is plastic material with hardness.

In another preferred embodiment, the first pivot joint is disposed on the back of the headrest.

100: Office chair headrest adjustment structure

10: Headrest

11: The first pivot joint

20: The first adjustment lever

21: Second pivot joint

22: The third pivot joint

30: clamping piece

31: Upper jaw

311: chute

312: Wearing department

32: lower jaw

321: slider

33:Adjustment bolt

40: The second adjustment rod

41: The fourth pivot joint

42: the other end

50: The first locking piece

60: The second locking piece

70: The third locking piece

90:Office chair

91: chair back

F1: first direction

Fig. 1 is a combined three-dimensional structure schematic diagram of an embodiment of the invention.

Fig. 2 is a left side structural schematic view of the embodiment in Fig. 1 .

Fig. 3 is a three-dimensional structural schematic view of the clamping part of the embodiment in Fig. 1 .

Fig. 4 is a schematic structural diagram of the left side view of the creation set on the office chair.

Figure 5 is a schematic diagram of the front view of the creation set on the office chair.

In order to have a more detailed understanding of the purpose, function, characteristics and structure of this creation, a preferred embodiment is hereby given and described in conjunction with the drawings as follows.

Please refer to Fig. 1 to Fig. 3, a kind of office chair headrest adjustment structure 100 provided by the present creation, it comprises a head rest portion 10, a first adjustment rod 20, a clamping part 30, a second adjustment rod 40, A first locking element 50 , a second locking element 60 and a third locking element 70 .

The headrest portion 10 has a first pivot portion 11 . The first pivot portion 11 is disposed on the back of the headrest portion 10 .

The opposite ends of the first adjustment rod 20 (ie, the top end and the bottom end of the first adjustment rod 20 shown in the figure) respectively have a second pivot portion 21 and a third pivot portion 22 .

The clamping member 30 includes an upper jaw 31 , a lower jaw 32 and an adjusting bolt 33 . The upper jaw 31 and the lower jaw 32 are made of hard plastic material.

The upper jaw 31 has a sliding slot 311 and a through portion 312 .

The lower jaw 32 has a slider 321 embedded in the slide groove 311 so that the upper jaw 31 and the lower jaw 32 can move relative to each other parallel to a first direction F1.

The adjusting bolt 33 passes through the upper jaw 31 and the lower jaw 32 parallel to the first direction F1 for locking the upper jaw 31 and the lower jaw 32 .

The length direction of the second adjusting rod 40 is parallel to the first direction F1, and one end of the second adjusting rod 40 parallel to the first direction F1 (that is, the top end of the second adjusting rod 40 shown in the figure) has a fourth pivot joint 41 , the other end 42 parallel to the first direction F1 (that is, the bottom end of the second adjusting rod 40 shown in the figure) is passed through the passing portion 312 of the clamping member 30 .

The first locking member 50 passes through the first pivot portion 11 and the second pivot portion 21 perpendicular to the first direction F1 . The headrest part 10 and the first adjusting rod 20 are pivotally connected to each other and pivoted around the first locking part 50 , and the headrest part 10 is positioned by the first locking part 50 .

The second locking member 60 is perpendicular to the first direction F1 and passes through the third pivot portion 22 and the fourth pivot portion 41 . The first adjusting rod 20 and the second adjusting rod 40 are pivotally connected to each other and pivot around the second locking member 60 , and the first adjusting rod 20 is positioned by the second locking member 60 .

The threading direction of the second locking member 60 is parallel to the threading direction of the first locking member 50 .

One end of the third locking member 70 is perpendicular to the first direction F1 and passes through the through portion 312 of the clamping member 30 toward the through portion 312 and abuts against the second adjusting rod 40 so as to position the second adjusting rod 40 .

Referring to FIG. 4 and FIG. 5 , the office chair headrest adjustment structure 100 is disposed on the top of the back 91 of the office chair 90 . The upper jaw 31 and the lower jaw 32 are clamped on the top edge of the chair back 91, and locked by the adjusting bolt 33 (see the adjusting bolt 33 in Fig. 1 or Fig. 2), so that the upper jaw 31 and the lower jaw 32 Do position.

Then adjust the position of the second adjusting rod 40 according to the needs of the user to adjust the height of the headrest 10 , and use the third locking member 70 to lock the second adjusting rod 40 to ensure its positioning.

Then adjust the angle of the first adjusting rod 20 to adjust the front and rear positions of the headrest portion 10 , and use the second locking member 60 to lock the first adjusting rod 20 to ensure its positioning.

Then the angle of the headrest 10 is adjusted to adjust the pitch angle of the headrest 10 , and the first locking member 50 is used to lock the headrest 10 so that the headrest 10 can be positioned reliably.

To sum up, the headrest adjustment structure of the office chair provided by this creation can be installed on an office chair without a headrest by using a special clamping part design, and the height and tilt angle can be adjusted in multiple ways, which greatly improves the user experience. Comfort when using an office chair.

Although the creation has been disclosed above with the embodiment, it is not intended to limit the creation. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the creation. The scope of protection of this creation shall be defined by the scope of the appended patent application.

100: Office chair headrest adjustment structure

10: Headrest

11: The first pivot joint

20: The first adjustment lever

21: Second pivot joint

22: The third pivot joint

30: clamping piece

31: Upper jaw

311: chute

312: Wearing department

32: lower jaw

321: slider

33:Adjustment bolt

40: The second adjustment lever

41: The fourth pivot joint

42: the other end

50: The first locking piece

60: The second locking piece

70: The third locking piece

F1: first direction

Claims (8)

An office chair headrest adjustment structure, which comprises: a headrest portion, which has a first pivot portion; A first adjusting rod, its opposite ends respectively have a second pivot joint and a third pivot joint; a clamping member, comprising: an upper jaw, which has a chute and a piercing portion; The lower jaw has a slider, which is embedded in the chute so that the upper jaw and the lower jaw can move relatively; an adjusting bolt, which passes through the upper jaw and the lower jaw, and is used to lock the upper jaw and the lower jaw; A second adjustment rod, one end of which has a fourth pivot joint, and the other end of which is pierced through the piercing portion of the clamping member; A first locking piece is passed through the first pivoting portion and the second pivoting portion, so that the headrest portion and the first adjustment lever are pivoted to each other and pivot around the first locking piece, and positioning the headrest by the first locking member; A second locking piece is passed through the third pivoting part and the fourth pivoting part, so that the first adjusting rod and the second adjusting rod are pivotally connected to each other and pivot around the second locking part, and positioning the first adjusting rod by the second locking member; and A third locking member, one end of which faces the through portion of the clamping member passes through the through portion and abuts against the second adjusting rod, so as to position the second adjusting rod. According to claim 1, the headrest adjustment structure of an office chair, wherein the upper jaw and the lower jaw can move relative to each other parallel to a first direction, and the adjustment bolt is passed through the upper jaw parallel to the first direction. Jaw and the lower jaw. According to claim 2, the headrest adjustment structure of an office chair, wherein the length direction of the second adjustment rod is parallel to the first direction. According to claim 2, the headrest adjustment structure of an office chair, wherein the first locking member is perpendicular to the first direction and passes through the first pivotal portion and the second pivotal portion. According to claim 4, the headrest adjustment structure of an office chair, wherein the second locking member is perpendicular to the first direction and penetrates the third pivotal joint and the fourth pivotal joint, and the second locking member passes through the direction Parallel to the threading direction of the first locking piece. The headrest adjustment structure of an office chair according to claim 4, wherein one end of the third locking member is perpendicular to the first direction and passes through the passing portion toward the clamping member, and the passing portion of the third locking member The direction is perpendicular to the threading direction of the second locking piece. According to claim 1, the headrest adjustment structure of an office chair, wherein the material of the upper jaw and the lower jaw is plastic material with hardness. According to claim 1, the headrest adjustment structure of an office chair, wherein the first pivotal joint is arranged on the back of the headrest.

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