CN219373556U - Chair with adjustable backrest angle and chair with adjustable headrest angle - Google Patents
Chair with adjustable backrest angle and chair with adjustable headrest angle Download PDFInfo
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- CN219373556U CN219373556U CN202320144240.3U CN202320144240U CN219373556U CN 219373556 U CN219373556 U CN 219373556U CN 202320144240 U CN202320144240 U CN 202320144240U CN 219373556 U CN219373556 U CN 219373556U
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Abstract
The utility model discloses a chair with an adjustable backrest and a chair with an adjustable headrest. The seat or the backrest is provided with a first joint part, and the first joint part is provided with a first latch structure. The backrest or the headrest is provided with a second joint part, the second joint part is rotatably connected to the first joint part, the second joint part is provided with a second latch structure, and the second latch structure is in clamping fit with the first latch structure to limit the second joint part to rotate relative to the first joint part. The elastic piece is arranged between the first joint part and the second joint part. When the second joint part moves axially relative to the first joint part, the second latch structure can be disengaged from the first latch structure; when the second joint part is reset relative to the first joint part, the first latch structure and the second latch structure can be clamped and matched again. The chair with the structure has the advantage that the angle of the backrest or the headrest is convenient to adjust and operate.
Description
Technical Field
The utility model relates to a chair, in particular to a chair with an adjustable backrest angle and a chair with an adjustable headrest angle.
Background
Some existing fishing chairs are provided with a backrest or headrest with an adjustable angle position. When adjusting the angle of the backrest or the headrest, it is often necessary to operate the unlocking member to unlock the backrest or the headrest, and then rotate the backrest or the headrest to adjust to a desired angle. For the chair, when the angle is adjusted, the unlocking piece is required to be operated, and the backrest or the headrest is required to be operated, so that the adjustment process is troublesome.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the chair with the adjustable backrest angle, and the backrest angle is convenient to adjust. The utility model further provides a chair with the adjustable headrest angle, and the headrest angle is convenient to adjust.
An embodiment of the utility model provides a chair with an adjustable back angle, comprising: the chair seat is provided with a first joint part, and the first joint part is provided with a first latch structure; the lower end of the backrest is provided with a second joint part which is rotatably connected with the first joint part, the second joint part is provided with a second latch structure, and the second latch structure is in clamping fit with the first latch structure to limit the second joint part to rotate relative to the first joint part; an elastic member disposed between the first joint portion and the second joint portion; wherein the second joint part is configured to be axially movable relative to the first joint part along a rotation axis thereof, and the elastic member is configured to provide an elastic restoring force to the second joint part; when the second joint part moves axially relative to the first joint part, the second latch structure can be disengaged from the first latch structure so that the second joint part can rotate relative to the first joint part to adjust the relative angle position; when the second joint part is reset relative to the first joint part, the first latch structure and the second latch structure can be in re-clamping fit to re-position the relative angle position of the second joint part relative to the first joint part.
The chair with the adjustable backrest angle has at least the following beneficial effects: when the angle of the backrest is required to be adjusted, the backrest can be directly pulled along the axial direction of the rotation axis of the backrest, so that the first latch structure and the second latch structure are disengaged, then the backrest is directly rotated to adjust the angle position of the backrest relative to the chair seat, after the backrest is adjusted to a required angle, the backrest is loosened, so that the first joint part and the second joint part reset to the relative positions through the elastic piece, and the first latch structure and the second latch structure are engaged again at the new relative angle positions, so that the new relative angle positions of the backrest relative to the chair seat are repositioned. According to the chair, when the angle of the backrest is adjusted, the unlocking piece is not required to be additionally operated, the angle is adjusted in a mode of directly operating the backrest, and the operation is convenient.
According to some embodiments of the utility model, the backrest comprises a U-shaped pipe frame, the second joint parts are arranged at two ends of the U-shaped pipe frame respectively, the first joint parts and the elastic parts are arranged at two groups and are matched with the two second joint parts in a one-to-one correspondence manner, the rotation axes of the two second joint parts are coaxial and are respectively positioned at the same side of the corresponding first joint parts, and a linkage cross rod is connected between the two ends of the U-shaped pipe frame.
According to some embodiments of the utility model, the U-shaped pipe rack is connected with a backrest soft package, and the middle parts of the two straight rod parts of the U-shaped pipe rack are connected with soft package supporting cross bars.
According to some embodiments of the utility model, the second joint part is connected with a pressing part, the pressing part is arranged in an exposed manner relative to the first joint part and the second joint part, and the pressing part can drive the second joint part to move relative to the first joint part along the axial direction when being pressed, so that the second latch structure can be disengaged from the first latch structure.
According to some embodiments of the present utility model, one of the first joint portion and the second joint portion is provided with a jack portion, the other is provided with a post inserting portion, the post inserting portion is movably inserted into the jack portion, the first latch structure is an internal gear structure arranged on a hole wall of the jack portion, the second latch structure is an external gear structure which is arranged on the periphery of the post inserting portion and is matched with the internal gear structure, and an axis of the internal gear structure, an axis of the external gear structure and a rotation axis of the second joint portion are coaxial.
An embodiment of the present utility model provides a chair with an adjustable headrest angle, including: the backrest is provided with a first joint part, and the first joint part is provided with a first latch structure; the headrest is provided with a second joint part which is rotatably connected with the first joint part, the second joint part is provided with a second latch structure, and the second latch structure is in clamping fit with the first latch structure so as to limit the second joint part to rotate relative to the first joint part; an elastic member disposed between the first joint portion and the second joint portion; wherein the second joint part is configured to be axially movable relative to the first joint part along a rotation axis thereof, and the elastic member is configured to provide an elastic restoring force to the second joint part; when the second joint part moves axially relative to the first joint part, the second latch structure can be disengaged from the first latch structure so that the second joint part can rotate relative to the first joint part to adjust the relative angle position; when the second joint part is reset relative to the first joint part, the first latch structure and the second latch structure can be in re-clamping fit to re-position the relative angle position of the second joint part relative to the first joint part.
The chair with the adjustable headrest angle has the following advantages: when the angle of the headrest needs to be adjusted, the headrest can be pulled directly along the axial direction of the rotation axis of the headrest, so that the first latch structure and the second latch structure are disengaged, then the headrest is rotated directly to adjust the angle position of the headrest relative to the backrest, after the required angle is adjusted, the headrest is loosened, so that the first joint part and the second joint part reset the relative position through the elastic piece, and the first latch structure and the second latch structure are engaged again at the new relative angle position, so that the new relative angle position of the headrest relative to the backrest is repositioned. According to the chair, when the angle of the headrest is adjusted, the unlocking piece is not required to be additionally operated, the angle is adjusted in a mode of directly operating the headrest, and the operation is convenient.
According to some embodiments of the present utility model, the headrest includes a left rod, a right rod and a connecting cross rod, the left rod and the right rod are arranged side by side at intervals, the left end and the right end of the connecting cross rod are respectively connected to the left rod and the right rod, the lower ends of the left rod and the right rod are respectively provided with the second joint parts, the first joint parts and the elastic parts are provided with two groups and are in one-to-one corresponding fit with the two second joint parts, and the rotation axes of the two second joint parts are coaxial and are respectively located on the same side of the corresponding first joint parts.
According to some embodiments of the present utility model, one of the first joint portion and the second joint portion is provided with a jack portion, the other is provided with a post inserting portion, the post inserting portion is movably inserted into the jack portion, the first latch structure is an internal gear structure arranged on a hole wall of the jack portion, the second latch structure is an external gear structure which is arranged on the periphery of the post inserting portion and is matched with the internal gear structure, and an axis of the internal gear structure, an axis of the external gear structure and a rotation axis of the second joint portion are coaxial.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a perspective view of a chair with an adjustable back angle according to an embodiment of the present utility model;
FIG. 2 is an exploded view of the structure shown in FIG. 1;
FIG. 3 is an enlarged schematic view of FIG. 2 at K;
FIG. 4 is a cross-sectional view taken along the direction A-A of FIG. 1;
FIG. 5 is an exploded view of the second joint shown in FIG. 2;
FIG. 6 is a perspective view of a chair with an adjustable headrest angle according to an embodiment of the present utility model;
FIG. 7 is one of the exploded schematic views of the structure shown in FIG. 6;
FIG. 8 is an enlarged schematic view at M of FIG. 7;
FIG. 9 is a second exploded view of the structure of FIG. 6;
FIG. 10 is an enlarged schematic view at N of FIG. 9;
fig. 11 is a sectional view in the B-B direction of the structure shown in fig. 6.
Reference numerals:
a seat 100;
backrest 200, u-tube rack 210, linkage cross bar 220, soft-pack support cross bar 230;
an elastic member 300;
headrest 400, left bar 410, right bar 420, connecting cross bar 430;
the first joint portion 910, the second joint portion 920, the first latch structure 901, the second latch structure 902, the insertion hole portion 911, the insertion hole portion 921, the center hole 912, the first hollow hole 9211, the second hollow hole 9121, the joint main body 922, the connection hole 923, the pressing piece 924, and the pressing portion 930.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 5, a chair with an adjustable back angle, comprising: seat 100, backrest 200, and elastic member 300. The seat 100 is provided with a first joint portion 910, and the first joint portion 910 is provided with a first latch structure 901. The lower end of the backrest 200 is provided with a second joint portion 920, the second joint portion 920 is rotatably connected to the first joint portion 910, the second joint portion 920 is provided with a second latch structure 902, and the second latch structure 902 is in snap fit with the first latch structure 901 to limit the second joint portion 920 to rotate relative to the first joint portion 910. The elastic member 300 is disposed between the first joint part 910 and the second joint part 920. Wherein the second joint part 920 is configured to be axially movable along a rotation axis thereof with respect to the first joint part 910, and the elastic member 300 is configured to provide an elastic restoring force to the second joint part 920; when the second joint portion 920 moves axially relative to the first joint portion 910, the second latch structure 902 can be disengaged from the first latch structure 901 so that the second joint portion 920 can rotate relative to the first joint portion 910 to adjust the relative angular position; when the second joint portion 920 is reset relative to the first joint portion 910, the first latch structure 901 and the second latch structure 902 can be re-engaged to reposition the relative angular position of the second joint portion 920 relative to the first joint portion 910.
When the angle of the backrest 200 needs to be adjusted, the backrest 200 can be directly pulled along the axial direction of the rotation axis of the backrest 200, so that the first latch structure 901 and the second latch structure 902 are disengaged, and then the backrest 200 is directly rotated to adjust the angular position of the backrest relative to the seat 100, after the backrest 200 is adjusted to a desired angle, the backrest 200 is released, so that the first joint portion 910 and the second joint portion 920 are reset to the relative positions through the elastic member 300, and the first latch structure 901 and the second latch structure 902 are engaged again at the new relative angular positions, so as to reposition the new relative angular positions of the backrest 200 relative to the seat 100. According to the chair, when the angle of the backrest 200 is adjusted, the unlocking piece is not required to be additionally operated, the angle is adjusted by directly operating the backrest 200, and the operation is convenient.
In an embodiment, the backrest 200 includes a U-shaped pipe frame 210, two second joint portions 920 are disposed at two ends of the U-shaped pipe frame 210, two first joint portions 910 and the elastic member 300 are disposed at two groups and are in one-to-one corresponding fit with the two second joint portions 920, rotation axes of the two second joint portions 920 are coaxial and are located at the same side of the corresponding first joint portions 910, and a linkage cross bar 220 is connected between the two ends of the U-shaped pipe frame 210. In the above structure, the first joint 910, the second joint 920 and the elastic member 300 are provided with two groups, and the rotational connection between the backrest 200 and the seat 100 is stable, and the angular positioning is stable; the rotation axes of the two second joint parts 920 are coaxial and are respectively positioned on the same side of the corresponding first joint part 910 (the fingers are positioned on the left side or the right side of the corresponding first joint part 910), so that the two second joint parts can move coaxially in the same direction; the linkage cross bar 220 may enable the two second joints 920 to move axially in a better synchronization for angular adjustment and synchronous repositioning.
In the embodiment, the U-shaped pipe rack 210 is connected with a backrest soft package, and the middle parts of the two straight rods of the U-shaped pipe rack 210 are connected with soft package supporting cross bars 230. The soft-pack support rail 230 can support the backrest soft pack to prevent falling off, and also ensures the support and comfort of the backrest 200.
In an embodiment, the second joint portion 920 is connected to a pressing portion 930, the pressing portion 930 is disposed exposed with respect to the first joint portion 910 and the second joint portion 920, and when the pressing portion 930 is pressed, the second joint portion 920 can be driven to move along the axial direction with respect to the first joint portion 910, so that the second latch structure 902 can be disengaged from the first latch structure 901. With the above structure, when the angle position of the backrest 200 is adjusted, the backrest 200 can be directly pulled to move axially, or the backrest 200 can be moved axially by pressing the pressing part 930, so that the adjusting means are enriched, and the use by users is facilitated.
In the embodiment, the first joint portion 910 is provided with a jack portion 911, the second joint portion 920 is provided with a post inserting portion 921, the post inserting portion 921 is movably inserted into the jack portion 911, the first latch structure 901 is an internal gear structure provided on a hole wall of the jack portion 911, the second latch structure 902 is an external gear structure provided on an outer periphery of the post inserting portion 921 and adapted to the internal gear structure, and an axis of the internal gear structure, an axis of the external gear structure and a rotation axis of the second joint portion 920 are coaxial. It is conceivable that the first joint portion 910 may be provided with a plug portion 921 and the second joint portion 920 may be provided with a corresponding insertion hole portion 911. The first latch structure 901 and the second latch structure 902 adopt the inner gear structure and the outer gear structure, so that the structure is simple, the clamping connection is stable, and the angle range of adjustment is wide. It is envisioned that the first latch structure 901 and the second latch structure 902 are not limited to the structures described above, for example, one of the first latch structure 901 and the second latch structure 902 is a facing tooth structure and the other is a plurality of axially extending latches.
In an embodiment, the second joint portion 920 includes a joint main body 922, one end of the post portion 921 is fixedly disposed on the joint main body 922, the pressing portion 930 is fixed on the other end of the post portion 921, and the elastic member 300 is a spring, and both ends thereof respectively abut against the pressing portion 930 and the first joint portion 910, so that the elastic member 300 can be compressed by the pressing portion 930 when the second joint portion 920 moves axially, thereby providing a restoring elastic force for the second joint portion 920. It is envisioned that the spring 300 is not limited to use with springs, for example, the spring 300 may be a spring structure or a spring body, etc. In the embodiment, one end of the spring is sleeved on the plunger 921, so that the spring is stable in operation when compressed and stretched.
In the embodiment, the pressing portion 930 is cylindrical, the insertion hole portion 911 is a circular hole adapted to the pressing portion 930, and the pressing portion 930 is movably inserted into the insertion hole portion 911 and can rotate and axially move in the insertion hole portion 911. In an embodiment, the post 921 has an external gear section and a cylindrical section, the external gear structure is disposed on the external gear section, and when the external gear structure is disengaged from the internal gear structure, the cylindrical section is movably inserted into a middle hole formed by the internal gear structure and can rotate and axially move in the middle hole. The above structure forms a multiple pivot structure, and the rotation of the second joint 920 is stable.
In the embodiment, one end of the post 921 is locked to the joint body 922 through a screw, it is conceivable that the post 921 may be fixed to the joint body 922 through other structures, such as an integral molding, an interference fit, or the like, and may be specifically configured according to practical situations.
Referring to fig. 6 to 11, a chair with an adjustable headrest angle includes: backrest 200, headrest 400, and elastic member 300. The backrest 200 is provided with a first joint portion 910, the first joint portion 910 being provided with a first latch structure 901. The headrest 400 is provided with a second joint portion 920, the second joint portion 920 is rotatably connected to the first joint portion 910, the second joint portion 920 is provided with a second latch structure 902, and the second latch structure 902 is in clamping fit with the first latch structure 901 to limit the second joint portion 920 to rotate relative to the first joint portion 910. The elastic member 300 is disposed between the first joint part 910 and the second joint part 920. Wherein the second joint part 920 is configured to be axially movable along a rotation axis thereof with respect to the first joint part 910, and the elastic member 300 is configured to provide an elastic restoring force to the second joint part 920; when the second joint portion 920 moves axially relative to the first joint portion 910, the second latch structure 902 can be disengaged from the first latch structure 901 so that the second joint portion 920 can rotate relative to the first joint portion 910 to adjust the relative angular position; when the second joint portion 920 is reset relative to the first joint portion 910, the first latch structure 901 and the second latch structure 902 can be re-engaged to reposition the relative angular position of the second joint portion 920 relative to the first joint portion 910.
When the angle of the headrest 400 needs to be adjusted, the headrest 400 can be directly pulled along the axial direction of the rotation axis of the headrest 400, so that the first latch structure 901 and the second latch structure 902 are disengaged, and then the headrest 400 is directly rotated to adjust the angular position of the headrest relative to the backrest 200, after the angle is adjusted to a required angle, the headrest 400 is released, so that the first joint portion 910 and the second joint portion 920 are reset to the relative positions through the elastic member 300, and the first latch structure 901 and the second latch structure 902 are engaged again at the new relative angular positions, so that the new relative angular positions of the headrest 400 relative to the backrest 200 are repositioned. The chair does not need to additionally operate the unlocking piece when the angle of the headrest 400 is adjusted, and the angle is adjusted by directly operating the headrest 400, so that the operation is convenient.
In an embodiment, the headrest 400 includes a left rod 410, a right rod 420 and a connecting cross rod 430, the left rod 410 and the right rod 420 are arranged at intervals side by side, the left end and the right end of the connecting cross rod 430 are respectively connected to the left rod 410 and the right rod 420, the lower ends of the left rod 410 and the right rod 420 are respectively provided with a second joint portion 920, the first joint portion 910 and the elastic member 300 are provided with two groups and are correspondingly matched with the two second joint portions 920 one by one, and the rotation axes of the two second joint portions 920 are coaxial and are respectively located on the same side of the corresponding first joint portion 910. In the above structure, the first joint 910, the second joint 920 and the elastic member 300 are provided in two groups, and the headrest 400 and the backrest 200 are stably rotatably connected and angularly positioned; the rotation axes of the two second joint parts 920 are coaxial and are respectively positioned on the same side of the corresponding first joint part 910 (the fingers are positioned on the left side or the right side of the corresponding first joint part 910), so that the two second joint parts can move coaxially in the same direction; the provision of the connecting rail 430 may enable the two second joints 920 to move axially in a better synchronization for angular adjustment and for synchronized repositioning.
In the embodiment, the first joint portion 910 is provided with a jack portion 911, the second joint portion 920 is provided with a post inserting portion 921, the post inserting portion 921 is movably inserted into the jack portion 911, the first latch structure 901 is an internal gear structure provided on a hole wall of the jack portion 911, the second latch structure 902 is an external gear structure provided on an outer periphery of the post inserting portion 921 and adapted to the internal gear structure, and an axis of the internal gear structure, an axis of the external gear structure and a rotation axis of the second joint portion 920 are coaxial. It is conceivable that the first joint portion 910 may be provided with a plug portion 921 and the second joint portion 920 may be provided with a corresponding insertion hole portion 911. The first latch structure 901 and the second latch structure 902 adopt the inner gear structure and the outer gear structure, so that the structure is simple, the clamping connection is stable, and the angle range of adjustment is wide. It is envisioned that the first latch structure 901 and the second latch structure 902 are not limited to the structures described above, for example, one of the first latch structure 901 and the second latch structure 902 is a facing tooth structure and the other is a plurality of axially extending latches.
In an embodiment, the second joint portion 920 includes a joint main body 922, a connection post 923, and a pressing piece 924, one end of the post 921 is disposed on the joint main body 922, the connection post 923 is cylindrical, and one end of the post is disposed on the joint main body 922, the post 921 has a first hollow hole 9211, and the connection post 923 is disposed in the first hollow hole 9211 and is coaxial with the first hollow hole 9211; a cylindrical center column 912 is arranged in the jack portion 911, the center column 912 is matched with the first hollow hole 9211, and the center column 912 is movably inserted into the first hollow hole 9211 and can rotate and axially move in the first hollow hole 9211; the center column 912 has a second hollow hole 9121, the connection column 923 is matched with the second hollow hole 9121, and the connection column 923 is movably inserted into the second hollow hole 9121 and can rotate and axially move in the second hollow hole 9121; the pressing piece 924 is fixed to the other end of the connecting post 923, and two ends of the elastic member 300 respectively abut against the pressing piece 924 and the first joint portion 910. In an embodiment, the tabs 924 are secured to the connection posts 923, particularly by screws. The elastic member 300 is specifically a spring, and the spring is sleeved on the connection post 923. When the second joint part 920 moves axially relative to the first joint part 910, the spring may be compressed by the pressing piece 924, so that a restoring force may be provided to the second joint part 920. The structure is compact, and a dual pivoting structure can be formed by the connecting column 923 and the center column 912, so that the rotation connection is stable. It is envisioned that in other embodiments, the resilient member 300 is not limited to use with springs, such as, for example, resilient tabs, resilient bodies, and the like.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (8)
1. A chair with an adjustable back angle, comprising:
a seat (100) provided with a first joint part (910), the first joint part (910) being provided with a first latch structure (901);
the backrest (200) is provided with a second joint part (920) at the lower end, the second joint part (920) is rotatably connected with the first joint part (910), the second joint part (920) is provided with a second latch structure (902), and the second latch structure (902) is in clamping fit with the first latch structure (901) so as to limit the second joint part (920) to rotate relative to the first joint part (910);
an elastic member (300) provided between the first joint section (910) and the second joint section (920);
wherein the second joint part (920) is configured to be axially movable along its rotational axis relative to the first joint part (910), the resilient member (300) being configured to provide a resilient return force to the second joint part (920); when the second joint part (920) moves axially relative to the first joint part (910), the second latch structure (902) can be disengaged from the first latch structure (901) so that the second joint part (920) can rotate relative to the first joint part (910) to adjust the relative angle position; when the second joint part (920) is reset relative to the first joint part (910), the first latch structure (901) and the second latch structure (902) can be in re-clamping fit to reposition the relative angle position of the second joint part (920) relative to the first joint part (910).
2. The chair with an adjustable back angle according to claim 1, wherein: the backrest (200) comprises a U-shaped pipe rack (210), two second joint parts (920) are arranged at two ends of the U-shaped pipe rack (210) respectively, two first joint parts (910) and elastic pieces (300) are arranged at two groups and are matched with the two second joint parts (920) in a one-to-one correspondence mode, the rotation axes of the two second joint parts (920) are coaxial and located at the same side of the corresponding first joint parts (910) respectively, and a linkage cross rod (220) is connected between the two ends of the U-shaped pipe rack (210).
3. The chair with an adjustable back angle according to claim 2, wherein: the U-shaped pipe support (210) is connected with a backrest soft package, and the middle parts of two straight rod parts of the U-shaped pipe support (210) are connected with soft package supporting cross bars (230).
4. The chair with an adjustable back angle according to claim 1 or 2, characterized in that: the second joint part (920) is connected with a pressing part (930), the pressing part (930) is arranged in an exposed mode relative to the first joint part (910) and the second joint part (920), and the second joint part (920) can be driven to move relative to the first joint part (910) along the axial direction when the pressing part (930) is pressed, so that the second latch structure (902) can be separated from the first latch structure (901).
5. The chair with an adjustable back angle according to claim 1, wherein: one of the first joint part (910) and the second joint part (920) is provided with a jack part (911) and the other is provided with a plunger part (921), the plunger part (921) is movably inserted in the jack part (911), the first latch structure (901) is an inner gear structure arranged on the hole wall of the jack part (911), the second latch structure (902) is an outer gear structure which is arranged on the periphery of the plunger part (921) and is matched with the inner gear structure, and the axis of the inner gear structure, the axis of the outer gear structure and the rotation axis of the second joint part (920) are coaxial.
6. A chair with an adjustable headrest angle, comprising:
a backrest (200), the backrest (200) being provided with a first joint part (910), the first joint part (910) being provided with a first latch structure (901);
a headrest (400) provided with a second joint part (920), wherein the second joint part (920) is rotatably connected to the first joint part (910), the second joint part (920) is provided with a second latch structure (902), and the second latch structure (902) is in clamping fit with the first latch structure (901) so as to limit the second joint part (920) to rotate relative to the first joint part (910);
an elastic member (300) provided between the first joint section (910) and the second joint section (920);
wherein the second joint part (920) is configured to be axially movable along its rotational axis relative to the first joint part (910), the resilient member (300) being configured to provide a resilient return force to the second joint part (920); when the second joint part (920) moves axially relative to the first joint part (910), the second latch structure (902) can be disengaged from the first latch structure (901) so that the second joint part (920) can rotate relative to the first joint part (910) to adjust the relative angle position; when the second joint part (920) is reset relative to the first joint part (910), the first latch structure (901) and the second latch structure (902) can be in re-clamping fit to reposition the relative angle position of the second joint part (920) relative to the first joint part (910).
7. The adjustable headrest angle chair according to claim 6, wherein: headrest (400) are including left pole (410), right pole (420) and connection horizontal pole (430), left pole (410) with right pole (420) interval sets up side by side, connect horizontal pole (430) left and right sides both ends connect respectively in left pole (410) with right pole (420), left pole (410) with the lower extreme of right pole (420) is provided with respectively second joint portion (920), first joint portion (910) with elastic component (300) set up two sets of and with two second joint portion (920) one-to-one cooperation, two the axis of rotation of second joint portion (920) is coaxial and is located respectively corresponding first joint portion (910) homonymy.
8. A chair with an adjustable headrest angle as claimed in claim 6 or claim 7, wherein: one of the first joint part (910) and the second joint part (920) is provided with a jack part (911) and the other is provided with a plunger part (921), the plunger part (921) is movably inserted in the jack part (911), the first latch structure (901) is an inner gear structure arranged on the hole wall of the jack part (911), the second latch structure (902) is an outer gear structure which is arranged on the periphery of the plunger part (921) and is matched with the inner gear structure, and the axis of the inner gear structure, the axis of the outer gear structure and the rotation axis of the second joint part (920) are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320144240.3U CN219373556U (en) | 2023-01-06 | 2023-01-06 | Chair with adjustable backrest angle and chair with adjustable headrest angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320144240.3U CN219373556U (en) | 2023-01-06 | 2023-01-06 | Chair with adjustable backrest angle and chair with adjustable headrest angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219373556U true CN219373556U (en) | 2023-07-21 |
Family
ID=87197095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320144240.3U Active CN219373556U (en) | 2023-01-06 | 2023-01-06 | Chair with adjustable backrest angle and chair with adjustable headrest angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219373556U (en) |
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2023
- 2023-01-06 CN CN202320144240.3U patent/CN219373556U/en active Active
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