CN112568637A - Chair (Ref. TM. chair) - Google Patents
Chair (Ref. TM. chair) Download PDFInfo
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- CN112568637A CN112568637A CN201910932364.6A CN201910932364A CN112568637A CN 112568637 A CN112568637 A CN 112568637A CN 201910932364 A CN201910932364 A CN 201910932364A CN 112568637 A CN112568637 A CN 112568637A
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- 238000013459 approach Methods 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 230000037237 body shape Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
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- 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
- A47C7/40—Support for the head or the back for the back
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
A chair includes a base column unit, a cushion unit, and a back unit. The chair also includes an adjustment unit. The adjusting unit comprises a base module connected to the base column unit and a connecting module which can rotate around a first axis and is connected to the base module in a positioning mode. The chair back unit can rotate around a second axis parallel to the first axis and is connected to one end, opposite to the base module, of the connecting module in a positioning mode. The connecting module can rotate relative to the base module around the first axis to enable the chair back unit to move between a close position and a far position relative to the base column unit along the first axial direction, so that the distance from the front edge of the chair cushion unit to the chair back unit can be adjusted, and the chair back unit can be adjusted to an angle suitable for leaning against by rotating relative to the connecting module through adjustment, so that users with different shapes can sit on the chair.
Description
Technical Field
The invention relates to a chair, in particular to a chair capable of adjusting the distance from the front edge of a cushion to a chair back.
Background
The height and weight of the developing children are increased rapidly, the average height of the Taiwan school child in the sixth year is 116.7 cm, the average height of the school child in the twelfth year is 151.5 cm, and the growth amplitude is 29.8%; the average weight of the school children aged six is 21.8 kg, the average weight of the school children aged twelve is 46.1 kg, the growth range is more as high as 111.5%, and the body shape change range of the developing children is quite large.
Thus, the size requirements for chairs are different for school children six years old and school children twelve years old. In terms of the distance from the front edge of the cushion to the backrest of the chair, a school child aged six needs a smaller distance due to a smaller size, and a school child aged twelve needs a larger distance due to a larger size. However, the general chair can only adjust the height of the cushion relative to the ground, but cannot adjust the distance between the front edge of the cushion and the backrest, so that the chair cannot be suitable for students of different ages. In this regard, parents often purchase chairs of different sizes along with the body shape of the schoolchild during the growth process of the schoolchild, and the used chairs are usually discarded due to the small size, which causes waste.
Disclosure of Invention
The invention aims to provide a chair which can be used for users with different shapes to sit.
The chair comprises a base column unit, a chair cushion unit and a chair back unit. The seat cushion unit is connected to the base pillar unit. The chair back unit is arranged above the chair cushion unit. The chair further comprises an adjusting unit, wherein the adjusting unit comprises a base module connected to the base column unit and a connecting module which can rotate around the first axis and is connected to the base module in a positioning mode. The chair back unit can rotate around a second axis parallel to the first axis and is connected to one end, opposite to the base module, of the connecting module in a positioning mode. The connecting module can rotate around the first axis relative to the base module to enable the chair back unit to move between an approaching position and a far position relative to the base column unit along the first axis. In the approaching position, the chair back unit is relatively adjacent to the base column unit. In the remote position, the seatback unit is relatively remote from the base pillar unit.
According to the chair, the connecting module of the adjusting unit is provided with a first pivoting part pivoted to the base module along the first axis, a second pivoting part for pivoting the chair back unit along the second axis, and a first rotating part and a second rotating part which are respectively connected with the base module and the chair back unit and can synchronously and respectively rotate around the first axis and the second axis. When the connecting module rotates around the first axis relative to the base module, the first rotating portion rotates around the first axis and synchronously drives the second rotating portion to rotate around the second axis so as to drive the chair back unit to rotate around the second axis relative to the connecting module.
In the chair of the invention, the first pivoting part, the first rotating part, the second rotating part and the second pivoting part of the adjusting unit jointly form a four-bar linkage, and the distance between the first rotating part and the second rotating part is fixed.
In the chair of the present invention, the connecting module of the adjusting unit has a base member, a first pivot and a second pivot respectively passing through the base member along the first axis and the second axis, a first groove and a second groove formed in the base member and respectively surrounding the first axis and the second axis, a first rotating shaft and a second rotating shaft respectively capable of rotating around the first axis and the second axis and respectively slidably passing through the first groove and the second groove, and a connecting rod pivotally connected between the first rotating shaft and the second rotating shaft. The first pivoting part and the second pivoting part are axially arranged on the base piece. The first pivot has the first pivot portion exposed to the outside of the base member. The second pivot has the second pivot portion exposed to the outside of the base member. The first rotating shaft has the first rotating portion exposed to the outside of the base member. The second pivot has the second rotating portion exposed to the outside of the base member.
In the chair of the present invention, the first groove of the adjusting unit is arc-shaped and has a first approaching end relatively adjacent to the base column unit and a first departing end opposite to the first approaching end and relatively far away from the base column unit. When the chair back unit is at the approaching position, the first rotating shaft is located at the first approaching end. When the chair back unit is at the far position, the first rotating shaft is located at the first far end.
In the chair of the present invention, the second groove of the adjusting unit is arc-shaped and has a second approaching end relatively adjacent to the base column unit and a second departing end opposite to the second approaching end and relatively far away from the base column unit. When the chair back unit is at the approaching position, the second rotating shaft is located at the second approaching end. When the chair back unit is at the far position, the second rotating shaft is positioned at the second far end.
In the chair of the present invention, the base member of the adjustment unit includes a first plate portion, a second plate portion provided at an interval from the first plate portion in a second axial direction perpendicular to the first axial direction, and a surrounding plate portion connecting between the first plate portion and the second plate portion. The first plate portion, the second plate portion and the surrounding plate portion are matched together to define a chamber for the connecting rod to extend. The first groove and the second groove are formed in the first plate portion and communicate with the accommodating chamber.
In the chair of the present invention, the connecting module of the adjusting unit further has a first guiding slot and a second guiding slot. The first guide groove and the second guide groove are formed in the second plate portion, respectively correspond to the first concave groove and the second concave groove, and are slidably provided for the first rotating shaft and the second rotating shaft.
In the chair of the present invention, the base module of the adjusting unit has a first joint plate and a second joint plate spaced apart from each other along the first axis. The first plate portion has a first end surface opposite to the first engaging plate. The chair also includes a positioning unit. The positioning unit comprises an embedding part which is arranged on the first end surface and surrounds the first axis, and a clamping part which is arranged on the first joint plate and is concave-convex complementary with the embedding part. The clamping part can be operated to move between a positioning position and a disengaging position relative to the embedding part along the first axis. When the connecting module is located at the locating position, the clamping part approaches to the first end surface and contacts with the embedding part, so that the connecting module is located in a non-rotatable mode relative to the first joint plate. When the connecting module is in the disengaging position, the clamping part is relatively far away from the embedding part, and the connecting module can rotate around the first axis relative to the first engaging plate.
In the chair of the invention, the base column unit comprises a support column extending upwards and a sliding seat which is connected between the support column and the base module and can be operated to drive the base module to move up and down along the support column and generate positioning.
The invention has the beneficial effects that: by arranging the connecting module, when the connecting module rotates relative to the base module, the chair back unit can be driven to move between the approaching position and the far position relative to the base column unit along the first axial direction, so that the distance from the front edge of the chair cushion unit to the chair back unit can be adjusted, and then the chair back unit can be adjusted to an angle suitable for leaning against by rotating relative to the connecting module through adjustment, so that users with different body shapes can sit.
Drawings
FIG. 1 is a perspective assembly view of one embodiment of a chair of the present invention;
FIG. 2 is an exploded perspective view of the embodiment;
FIG. 3 is an exploded perspective view of the embodiment from another angle;
FIG. 4 is a schematic right-view of a connection module according to the embodiment;
FIG. 5 is a cross-sectional view taken along line V-V of FIG. 1 illustrating a retaining portion in a disengaged position relative to an engaging portion;
FIG. 6 is a view similar to FIG. 5, illustrating the retaining portion in a locating position relative to the engaging portion;
FIG. 7 is a right side view of the embodiment illustrating a seatback unit in a remote position relative to a base unit in a first axial direction;
fig. 8 is a view similar to fig. 7, illustrating the seatback unit in an approximated position with respect to the base unit along the first axis.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, 2 and 3, an embodiment of the chair of the present invention includes a base unit 2, a cushion unit 3, a backrest unit 4, an adjustment unit 5, and a positioning unit 6.
A first axial direction X, a second axial direction Y perpendicular to the first axial direction X, and a third axial direction Z perpendicular to the first axial direction X and the second axial direction Y are defined.
The base column unit 2 includes a support column 21 extending upward, and a slide base 22 connected to the support column 21 and operable to move up and down along the support column 21 and to be positioned.
The cushion unit 3 is connected to the support column 21.
The seat back unit 4 is disposed above the seat cushion unit 3.
The adjusting unit 5 includes a base module 51 connected to the sliding seat 22 and driven by the sliding seat 22 to move up and down along the pillar 21 and generate positioning, and a connecting module 9 capable of rotating around a first axis L1 and generating positioning connection with the base module 51.
Referring to fig. 2, 3 and 4, the seat back unit 4 is rotatable about a second axis L2 parallel to the first axis L1 and is connected to the end of the link module 9 opposite the base module 51 in a fixed position.
The base module 51 has a first engaging plate 7 and a second engaging plate 8 spaced apart along the first axis L1. The connecting module 9 is located between the first joint plate 7 and the second joint plate 8.
The first joint plate 7 has a first base 71, a first through hole 72 penetrating the first base 71 along the first axis L1, an adjusting portion 73 rotatably disposed around the first axis L1 and movably disposed along the first axis L1 in the first through hole 72, a holding portion 74 exposed outside the first base 71 and connected to the adjusting portion 73 and capable of driving the adjusting portion 73 to rotate around the first axis L1, and a pivot slot 75 recessed in a surface of the adjusting portion 73 corresponding to the connecting module 9 and extending along the first axis L1. In this embodiment, the first base 71 is made of a plastic material.
Referring to fig. 2, 5 and 6, the first through hole 72 has a small aperture area 721 adjacent to the connection module 9, a large aperture area 722 opposite to the small aperture area 721 and having a larger aperture than the small aperture area 721, and a connection area 723 connecting the small aperture area 721 and the large aperture area 722.
The first base portion 71 has an abutment region 711 defining the connecting region 723 and a surrounding region 712 surrounding the large aperture region 722. The surrounding region 712 is formed with an internal thread 713.
The outer circumferential surface of the adjusting portion 73 is formed with a male screw 732 corresponding to the female screw 713.
Referring to fig. 2, 3 and 4, the connecting module 9 has a base member 91, a first pivot 92 and a second pivot 93 respectively passing through the base member 91 along the first axis L1 and the second axis L2, a first groove 94 and a second groove 95 respectively formed on the base member 91 and respectively passing around the first axis L1 and the second axis L2, a first rotating shaft 96 and a second rotating shaft 97 respectively capable of rotating around the first axis L1 and the second axis L2 and respectively passing through the first groove 94 and the second groove 95 slidably, and a connecting rod 98 pivotally connected between the first rotating shaft 96 and the second rotating shaft 97, and a first guiding groove 99 and a second guiding groove 90 formed in the base member 91 and respectively corresponding to the first groove 94 and the second groove 95, and respectively provided for the first rotating shaft 96 and the second rotating shaft 97 to be slidably disposed.
The base member 91 has a first plate portion 911, a second plate portion 912 provided at a distance from the first plate portion 911 in the second axial direction Y, and a surrounding plate portion 913 connecting between the first plate portion 911 and the second plate portion 912. The first plate portion 911, the second plate portion 912 and the surrounding plate portion 913 cooperate to define a chamber 914 for the connecting rod 98 to extend. The first groove 94 and the second groove 95 are formed in the first plate portion 911 and communicate with the accommodating chamber 914. The first guide groove 99 and the second guide groove 90 are formed in the second plate portion 912 and communicate with the accommodating chamber 914.
The first plate portion 911 has a first end surface 915 opposite to the first engaging plate 7.
The first pivot 92 passes through the first plate portion 911 and the second plate portion 912 of the base member 91, and has two first pivot portions 921 respectively located at two ends and exposed outside the base member 91 and pivotally connected to the base module 51 along the first axis L1. One of the first pivot portions 921 adjacent to the first joint plate 7 extends into the pivot slot 75.
The second pivot 93 passes through the first plate portion 911 and the second plate portion 912 of the base member 91, and has two second pivot portions 931 which are respectively located at both ends, exposed outside the base member 91, and pivotally connect the seat back unit 4 along the second axis L2.
The first rotating shaft 96 passes through the first groove 94 and the first guiding groove 99 of the base member 91, and has two first rotating portions 961 which are respectively located at both ends, exposed outside the base member 91, and rotatably connected to the base module 51 about the first axis L1.
The second rotating shaft 97 passes through the second groove 95 of the base member 91 and the second guiding groove 90, and has two second rotating portions 971 respectively located at two ends, exposed outside the base member 91, and rotatably connected to the base module 51 around the second axis L2. In the present embodiment, the first rotating portion 961 and the second rotating portion 971 can rotate around the first axis L1 and the second axis L2 synchronously and respectively.
The first groove 94 is circular-arc-shaped and has a first proximal end 941 relatively adjacent to the base column unit 2 and a first distal end 942 opposite to the first proximal end 941 and relatively distal from the base column unit 2.
The second groove 95 is arc-shaped and has a second proximal end 951 relatively adjacent to the base column unit 2 and a second distal end 952 opposite to the second proximal end 951 and relatively distant from the base column unit 2.
The first pivot portion 921 and the second pivot portion 931 are axially disposed on the base member 91. Each first pivot portion 921, the corresponding first rotating portion 961, the corresponding second rotating portion 971, and the corresponding second pivot portion 931 together form a four-bar linkage, and the distance between each first rotating portion 961 and the corresponding second rotating portion 971 is fixed.
Referring to fig. 4, 7 and 8, the connecting module 9 can rotate relative to the base module 51 about the first axis L1 to move the seatback unit 4 relative to the base pillar unit 2 along the first axial direction X between an approaching position (see fig. 7) and a remote position (see fig. 8). In the approaching position, the seatback unit 4 is relatively adjacent to the base column unit 2, the first rotating shaft 96 is located at the first approaching end 941 (see fig. 4 solid line position), and the second rotating shaft 97 is located at the second approaching end 951 (see fig. 4 solid line position). In the remote position, the seatback unit 4 is relatively remote from the base cylinder unit 2, the first rotating shaft 96 is located at the first remote end 942 (see fig. 4 phantom line position), and the second rotating shaft 97 is located at the second remote end 952 (see fig. 4 phantom line position).
Referring to fig. 2, 5 and 6, the positioning unit 6 includes an inserting portion 61 disposed on the first end surface 915 of the base member 91 and surrounding the first axis L1, and a locking portion 62 disposed on the first engaging plate 7 and complementary to the inserting portion 61. In the present embodiment, the latch 62 is made of a plastic material.
The engaging portion 62 is operable to move along the first axis L1 relative to the engaging portion 61 between a positioning position (see fig. 5) in which the engaging portion 62 approaches the first end face 915 and contacts the engaging portion 61, and a disengaging position (see fig. 6) in which the engaging portion 62 is relatively away from the engaging portion 61.
The following is a brief description of the use of the chair, followed by a detailed description of the operation and actuation principles of the components during use.
When a user wants to adjust the position of the seat back unit 4 relative to the base column unit 2 along the first axial direction X, the user first needs to operate to make the locking portion 62 in the disengaged position relative to the inserting portion 61 along the first axis L1, so that the connecting module 9 can rotate around the first axis L1 relative to the first engaging plate 7, and further, the seat back unit 4 is driven to move relative to the base column unit 2 along the first axial direction X. When the seat back unit 4 reaches the predetermined position, the locking portion 62 is operated to be located at the positioning position along the first axis L1 relative to the embedding portion 61, so that the connecting module 9 is non-rotatably positioned relative to the first engaging plate 7, and the seat back unit 4 is positioned relative to the base pillar unit 2 along the first axial direction X.
Next, the operation of each component when the locking portion 62 moves along the first axis L1 relative to the insertion portion 61 will be described in detail below, so as to further describe the operation principle that the connection module 9 can rotate or position relative to the first engaging plate 7 around the first axis L1.
When a user wants to fix the connecting module 9 to the first engaging plate 7 to be fixed and positioned, a force is first applied to the holding portion 74 to drive the adjusting portion 73 to rotate around the first axis L1, and the adjusting portion 73 is moved along the first axis L1 toward the connecting module 9 by the engagement of the internal threads 713 and the external threads 732. During the aforementioned movement, the adjusting portion 73 can be pressed against the abutting region 711 and the locking portion 62, and since the first base portion 71 and the locking portion 62 are made of plastic material, they are elastically deformed when pressed against by the adjusting portion 73 and move toward the connecting module 9 to reach the positioning position (see fig. 6). In the positioning position, the catching portion 62 contacts and urges the catching portion 61 to generate frictional resistance to non-rotatably position the connection module 9 with respect to the first engagement plate 7.
When the user wants to rotate the connecting module 9 around the first axis L1 relative to the first engaging plate 7, a force is first applied to the holding portion 74 to drive the adjusting portion 73 to rotate around the first axis L1, so that the adjusting portion 73 is moved along the first axis L1 in a direction away from the connecting module 9 by releasing the engagement between the internal threads 713 and the external threads 732. As the adjusting portion 73 gradually moves away from the abutting region 711, the abutting region 711 and the locking portion 62 will return to their original shapes by using the material properties of the first base portion 71 and the locking portion 62 to gradually move away from the inserting portion 61 and reach the disengaging position (see fig. 5). Since the catching portion 62 is relatively distant from and no longer urges the embedding portion 61 when in the disengaged position, the connection module 9 can rotate about the first axis L1 with respect to the first engagement plate 7.
Referring to fig. 4, 7 and 8, the operation and the operation principle of the components when the connecting module 9 rotates around the first axis L1 relative to the base module 51 will be described.
When the user wants to move the backrest unit 4 from the approaching position shown in fig. 7 to the remote position shown in fig. 8, the user needs to operate to rotate the connecting module 9 around the first axis L1 in the counterclockwise direction with respect to the base module 51, so as to drive the backrest unit 4 connected to the end of the connecting module 9 opposite to the base module 51 to gradually move away from the base column unit 2.
Furthermore, since the first rotating portion 961 is connected to the base module 51, the relative position between the first rotating shaft 96 and the base module 51 is fixed during the aforementioned rotation, the first rotating shaft 96 is slid from the first approaching end 941 (see fig. 4 solid line position) to the first departing end 942 (see fig. 4 phantom line position) during the rotation of the base member 91 and the first groove 94, and since the connecting rod 98 is pivoted between the first rotating shaft 96 and the second rotating shaft 97, the second rotating shaft 97 is synchronously rotated around the second axis L2 and slid from the second approaching end 951 (see fig. 4 solid line position) to the second departing end 952 (see fig. 4 phantom line position), and the backrest unit 4 is connected to the second rotating portion 971 and pivoted to the second pivoting portion 931, therefore, the backrest unit 4 is driven by the second rotation shaft 97 to rotate relative to the connecting module 9, so that the backrest unit 4 can be maintained at an angle suitable for abutment.
In the process of the rotation and movement, the height of the seat back unit 4 relative to the seat cushion unit 3 along the third axial direction Z is also changed, and for this purpose, the sliding seat 22 is operated to drive the base module 51 to move up and down along the pillar 21 and to be positioned, so as to adjust the seat back unit 4 to a proper height.
In this way, when the connecting module 9 rotates relative to the base module 51, the seat back unit 4 is driven to move relative to the base column unit 2 along the first axial direction X between the approaching position and the departing position, so that the distance from the front edge of the seat cushion unit 3 to the seat back unit 4 can be adjusted, and the seat back unit 4 is maintained at an angle suitable for abutting in the moving process, so as to be suitable for users with different shapes to sit.
It should be noted that, in the embodiment, during the rotation of the connecting module 9 relative to the base module 51 about the first axis L1, the first rotating portion 961 drives the second rotating portion 971 to rotate about the second axis L2 to drive the seat back unit 4 to rotate about the second axis L2 relative to the connecting module 9, however, in other embodiments, the first rotating portion 961 may not drive the second rotating portion 971 to rotate about the second axis L2, and the same effect can be achieved as long as the seat back unit 4 is pivoted to the connecting module 9 and can be operated to adjust the angle of the seat back unit 4 relative to the connecting module 9.
It should be noted that, in the present embodiment, each of the first pivot portions 921, the corresponding first rotating portion 961, the corresponding second rotating portion 971 and the corresponding second pivot portion 931 together form the four-bar linkage mechanism by the base member 91, the first groove 94, the second groove 95 and the connecting bar 98, and the distance between each of the first rotating portions 961 and the corresponding second rotating portion 971 is fixed, however, in other embodiments, the connecting module 9 may form the four-bar linkage mechanism by combining other components and other combinations, and the same purpose is achieved.
It should be noted that, in the present embodiment, the connecting module 9 can be non-rotatably positioned relative to the first engaging plate 7 by operating the locking portion 62 to press the engaging portion 61, however, in other embodiments, the locking portion 62 and the engaging portion 61 can be designed to be engaged with each other, so that the same purpose can be achieved as long as the locking portion 62 contacts the engaging portion 61.
In addition, in the embodiment, the locking portion 62 of the positioning unit 6 is disposed on the first base portion 71, and the first base portion 71 and the locking portion 62 are made of plastic material, so that the first base portion 71 and the locking portion 62 are elastically deformed to press the locking portion 61 when being pressed by the adjusting portion 73, however, in other embodiments, the locking portion 62 may be disposed on the adjusting portion 73, and the first base portion 71 and the locking portion 62 may be made of non-plastic material, so long as the adjusting portion 73 can be moved away from or toward the connecting module 9 along the first axis L, so that the locking portion 62 is away from or contacts the locking portion 61, the same purpose can be achieved.
In summary, when the connecting module 9 rotates relative to the base module 51, the backrest unit 4 is driven to move between the approaching position and the departing position along the first axial direction X relative to the base column unit 2, so that the distance from the front edge of the cushion unit 3 to the backrest unit 4 can be adjusted, and then the backrest unit 4 can be adjusted to an angle suitable for leaning against by rotating the backrest unit 4 relative to the connecting module 9 through adjustment, so that users with different shapes can sit on the chair, and the purpose of the invention can be achieved.
Claims (10)
1. The utility model provides a chair, contains the foundation column unit, and the chair back unit, the chair cushion unit connect in the foundation column unit, the chair back unit set up in the top of chair cushion unit, its characterized in that: the chair also comprises an adjusting unit, wherein the adjusting unit comprises a base module connected to the base column unit and a connecting module capable of rotating around a first axis and generating positioning connection to the base module, the chair back unit can rotate around a second axis parallel to the first axis and generating positioning connection to the connecting module opposite to one end of the base module, the connecting module can rotate around the first axis relative to the base module to enable the chair back unit to move between an approaching position and a far position relative to the base column unit along the first axis, the chair back unit is relatively adjacent to the base column unit when the chair approaches the position, and the chair back unit is relatively far away from the base column unit when the chair leaves the position.
2. The chair according to claim 1, wherein: the connection module of adjustment unit is formed with the edge first axis pin joint in the first pin joint portion of base module, confession the back of the chair unit is followed the second pin joint portion of second axis pin joint, and connect respectively the base module with the back of the chair unit and can be synchronous and wind respectively first axis with second axis pivoted first rotation portion and second rotation portion, the connection module for the base module winds when the first axis rotates, first rotation portion can wind first axis rotates and drives in step the second rotation portion winds the second axis rotates, in order to drive the back of the chair unit winds the second axis for the connection module rotates.
3. The chair according to claim 2, wherein: the first pivoting part, the first rotating part, the second rotating part and the second pivoting part of the adjusting unit jointly form a four-bar linkage, and the distance between the first rotating part and the second rotating part is fixed.
4. A chair according to claim 3, wherein: the connecting module of the adjusting unit comprises a base member, a first pivot and a second pivot which are respectively arranged on the base member along the first axis and the second axis in a penetrating way, a first groove and a second groove which are respectively formed on the base member and respectively surround the first axis and the second axis, a first rotating shaft and a second rotating shaft which are respectively rotatable around the first axis and the second axis and respectively slidably arranged on the first groove and the second groove in a penetrating way, and a connecting rod which is pivoted between the first rotating shaft and the second rotating shaft, wherein the first pivoting part and the second pivoting part are axially arranged on the base member, the first pivot is provided with a first pivoting part exposed outside the base member, the second pivot is provided with a second pivoting part exposed outside the base member, and the first rotating shaft is provided with a first rotating part exposed outside the base member, the second pivot has the second rotating portion exposed to the outside of the base member.
5. The chair according to claim 4, wherein: the first groove of the adjusting unit is arc-shaped and is provided with a first approaching end relatively close to the base column unit and a first far end opposite to the first approaching end and relatively far away from the base column unit, when the chair back unit approaches the position, the first rotating shaft is located at the first approaching end, and when the chair back unit leaves the position, the first rotating shaft is located at the first far end.
6. The chair according to claim 4, wherein: the second groove of the adjusting unit is arc-shaped and is provided with a second approaching end relatively close to the base column unit and a second far end opposite to the second approaching end and relatively far away from the base column unit, the second rotating shaft is located at the second approaching end when the chair back unit approaches the position, and the second rotating shaft is located at the second far end when the chair back unit leaves the position.
7. The chair according to claim 4, wherein: the base piece of the adjusting unit is provided with a first plate part, a second plate part and a surrounding plate part, wherein the second plate part and the first plate part are arranged at intervals along a second axial direction perpendicular to the first axial direction, the surrounding plate part is connected between the first plate part and the second plate part, the first plate part, the second plate part and the surrounding plate part are matched together to define a containing chamber for the connecting rod to extend, and the first groove and the second groove are formed in the first plate part and communicated with the containing chamber.
8. The chair according to claim 7, wherein: the connecting module of the adjusting unit further has a first guiding groove and a second guiding groove, and the first guiding groove and the second guiding groove are formed in the second plate portion, respectively correspond to the first groove and the second groove, and are respectively provided for the first rotating shaft and the second rotating shaft to be slidably disposed.
9. The chair according to claim 7, wherein: the base module of the adjusting unit is provided with a first joint plate and a second joint plate which are arranged along the first axis at intervals, the first plate portion has a first end surface opposite to the first engaging plate, the chair further includes a positioning unit, the positioning unit comprises an embedding part which is arranged on the first end surface and surrounds the first axis, and a clamping part which is arranged on the first joint plate and is concave-convex complementary with the embedding part, the clamping part can be operated to move between a positioning position and a disengaging position relative to the embedded clamping part along the first axis, when the connecting module is located at the locating position, the clamping part approaches to the first end surface and contacts with the embedding part, so that the connecting module is located in a non-rotatable mode relative to the first joint plate, when the connecting module is in the disengaging position, the clamping part is relatively far away from the embedding part, and the connecting module can rotate around the first axis relative to the first engaging plate.
10. A chair according to claim 3, wherein: the foundation column unit comprises a support column extending upwards and a sliding seat which is connected between the support column and the base module and can be operated to drive the base module to move up and down along the support column and generate positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932364.6A CN112568637B (en) | 2019-09-29 | 2019-09-29 | Chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932364.6A CN112568637B (en) | 2019-09-29 | 2019-09-29 | Chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112568637A true CN112568637A (en) | 2021-03-30 |
| CN112568637B CN112568637B (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910932364.6A Active CN112568637B (en) | 2019-09-29 | 2019-09-29 | Chair |
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| CN (1) | CN112568637B (en) |
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| CN112568637B (en) | 2024-03-19 |
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