CN111528639A - Chair seat connecting device with adjustable backrest - Google Patents
Chair seat connecting device with adjustable backrest Download PDFInfo
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- CN111528639A CN111528639A CN202010468052.7A CN202010468052A CN111528639A CN 111528639 A CN111528639 A CN 111528639A CN 202010468052 A CN202010468052 A CN 202010468052A CN 111528639 A CN111528639 A CN 111528639A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 230000001276 controlling effect Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037237 body shape 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
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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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/18—Chairs or stools with rotatable seat
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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
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/32—Chairs or stools with vertically-adjustable seats with flexible height-adjusting means, e.g. rope, chain
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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
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
- A47C7/465—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means by pulling an elastic cable
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention relates to a chair seat connecting device capable of adjusting a backrest, and belongs to the technical field of swivel chairs. It comprises a chair back tightness control component; the chair back tightness control assembly comprises a control handle, a universal joint, a transmission rod, a first bevel gear, a second bevel gear, a lifting piece, a mounting seat of the lifting piece and a tightness adjusting rod which are regulated and controlled in a rotating mode. The universal joint is replaced by the original pull rope for transmission, so that the response timeliness of force transmission when the tightness of the chair back is adjusted is improved; the accuracy and the controllability of the tightness adjustment of the chair back are improved; meanwhile, the size of the force arm is effectively improved in a mode of adjusting by adopting the pull rope relatively, the force transmission size of the product during adjustment is improved, the requirement on the force transmission size is improved, the force requirement on a user is reduced, the possibility that the adjusting mechanism is damaged due to overlarge input force when the product is adjusted is effectively reduced, and the service life of the product is prolonged.
Description
Technical Field
The invention relates to a chair seat connecting device capable of adjusting a backrest, and belongs to the technical field of swivel chairs.
Background
The swivel chair is a common office chair, has the advantages of flexible rotation and flexible movement, and also has the function of conveniently adjusting the height of the chair seat. The common swivel chair does not have the function of adjusting the chair back, so that the requirements of people cannot be met. Therefore, a chair capable of adjusting the tilting angle of the chair back is urgently needed in the market.
Chinese patent application publication No. CN10933798A discloses a wire control device for adjusting the tilting and tightness of a back frame of a seat. It comprises a back frame inclining and facing upward adjusting wire control device and a back frame tightness adjusting wire control device which are arranged in a seat. The back frame inclination adjustment line control device comprises a back frame connecting tail plate used for connecting a back frame of a seat, an inclination adjustment mechanism, an inclination pull rope and an inclination adjustment handle, wherein the inclination adjustment mechanism, the inclination pull rope and the inclination adjustment handle can be connected with the back frame connecting tail plate; the back frame tightness adjusting line control device comprises a tightness adjusting control rod, a first tightness pull rope, a second tightness pull rope and a tightness adjusting mechanism; one end of the first elastic pull rope is connected with the elastic adjusting control rod, and the other end of the first elastic pull rope is connected with the elastic adjusting mechanism; one end of the second elastic pull rope is connected with the elastic adjusting control rod, and the other end of the second elastic pull rope is connected with the elastic adjusting mechanism. In this scheme, because back of the body frame tight regulation drive-by-wire device mainly comes to regulate and control the tight regulation threaded rod through the elasticity stay cord, the tight regulation threaded rod itself has very strong pretension effect or reaction between the back of the chair and seat support, will adjust it and need provide great power. The force provided by the elastic pull rope is limited; the tension of the elastic pull rope is not determined, the influence factors include the tension of the elastic pull rope, the strength of the elastic adjusting mechanism, the connection strength of the elastic adjusting mechanism and the elastic pull rope and the like, the elastic adjusting mechanism is a complex mechanism, the elastic adjusting mechanism is regulated and controlled in a mode that the lifting piece is wound by the pull ropes in two directions to rotate forwards and backwards through the pulling in the two directions, the required force is larger, and the regulation of the back frame elastic adjustment line control device on the elastic adjusting threaded rod is further influenced.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems, and therefore, to provide a seat attachment device for an adjustable backrest.
The technical scheme for solving the problems is as follows:
a chair seat connecting device with an adjustable backrest comprises a tray for connecting a gas spring and a chair seat connecting piece for mounting a chair cushion, wherein the chair seat connecting piece is fixedly or movably connected with the tray; the tray has a first hinge point and a second hinge point; the chair seat connecting device also comprises a chair back connecting piece, wherein one end of the chair back connecting piece is provided with a first hinge part, and the other end of the chair back connecting piece is a free part for mounting a backrest of a chair; the upper end of the middle part of the chair back connecting piece is also provided with a second hinge part, the first hinge part is hinged with a first hinge point of the tray, and the second hinge part is hinged with the second hinge point through a connecting rod and a triangular adjusting piece; the connecting rod is provided with a first end and a second end, and the triangular adjusting piece is provided with a first hinge joint point positioned at the top, a second hinge joint point positioned at the front end of the lower part and a third hinge joint point positioned at the rear end of the lower part which are distributed in a triangular manner; the second hinge part is connected with the first end of the connecting rod, the second end of the connecting rod is hinged with the first hinge point of the triangular adjusting piece, and the second hinge point of the triangular adjusting piece is hinged with the second hinge point of the tray;
the chair seat connecting device also comprises a chair back tightness control assembly, wherein the chair back tightness control assembly comprises a control handle, a universal joint, a transmission rod, a first bevel gear, a second bevel gear, a lifting piece, a mounting seat of the lifting piece and a tightness adjusting rod which are regulated and controlled in a rotating mode;
the first bevel gear is provided with a first bevel gear part and an installation part, the installation part is fixedly connected with one end of the transmission rod, the other end of the transmission rod is fixedly connected with a first end of the universal joint, and a second end of the universal joint is fixedly connected with the control handle;
the second bevel gear is provided with a second bevel gear part and a flat gear part; the second bevel gear part is meshed with the first bevel gear;
the lifting piece is provided with a gear part, a threaded part and a bearing part; the flat tooth part is meshed with the gear part of the lifting piece; the lifting piece is arranged on the mounting seat in a lifting way through a thread part of the lifting piece;
one end of the elastic adjusting rod is fixedly connected with a cross rod, and the other end of the elastic adjusting rod is arranged in the tray; the middle part of the cross bar is borne on the bearing part, and two ends of the cross bar are respectively hinged with a third hinge joint point of the triangular adjusting piece through a first hinge arm and a second hinge arm; and the cross bar is hinged close to the second hinge point.
Preferably, the chair seat connecting device further comprises a chair back inclination control assembly, the chair back inclination control assembly comprises a connecting plate fixedly connected with the chair back connecting piece, an inclination adjusting piece, an inclination stay cord and an inclination adjusting handle, one end of the inclination stay cord is connected with the inclination adjusting piece, and the other end of the inclination stay cord is connected with the inclination adjusting handle;
the connecting plate is provided with a plurality of rows of holes;
the tilting adjusting piece is provided with a movable bolt which is embedded or separated relative to the multiple rows of holes and an actuating piece which controls the movable bolt to be embedded or separated, and the actuating piece is provided with a connecting end which is fixedly connected with one end of the tilting pull rope and a control part which is used for controlling the state of the movable bolt and is connected with the movable bolt in a matching way; the other end of the pull rope is fixedly connected with the inclination adjusting handle; the tipping adjustment part also comprises a first return spring which acts on the actuating part and enables the actuating part to generate a return effect when the movable bolt is controlled.
Preferably, the seat connecting device further comprises a lifting adjusting assembly, the lifting adjusting assembly comprises a lifting handle, a lifting pull rope, a gas spring plectrum and a plectrum mounting seat, and the gas spring plectrum comprises a hinged part for mounting the gas spring plectrum on the plectrum mounting seat and a toggle part for controlling the gas spring; one end of the lifting pull rope is fixedly connected with the gas spring shifting piece and used for controlling the state of the gas spring shifting piece, and the other end of the lifting pull rope is connected with the lifting handle; the lifting adjusting assembly further comprises a second reset spring or a reset elastic sheet which acts on the gas spring plectrum and enables the gas spring plectrum to generate a reset effect when the gas spring is controlled.
Preferably, the seat connecting device further comprises a seat adjusting assembly, the seat adjusting assembly comprises a control hand wheel, a regulating gear and a regulating rack which are arranged on the seat, the regulating gear is connected with the regulating rack in a matched mode, and the regulating rack is fixedly connected with the tray.
Preferably, the seat adjusting assembly further comprises a limiting shell and a transmission strip for limiting the rotation of the control hand wheel; the control hand wheel is provided with a hand-holding section, a control section and a positioning section which are distributed in a stepped manner, the hand-holding section is arranged close to the outside, the control section is arranged in the middle, and the positioning section is arranged close to the inside; the outer side wall of the control section is provided with a plurality of axially arranged rotation limiting convex strips distributed in an array manner, the inner wall of the limiting shell is provided with a plurality of axially arranged rotation limiting grooves distributed in an array manner, and the rotation limiting convex strips are matched and connected with the rotation limiting grooves; the transmission strip is provided with an inner end and an outer end, the inner end is fixedly connected with the regulating gear, and the outer end is sleeved with the control hand wheel in an axial sliding manner; the chair seat adjusting component also comprises a positioning steel ball, a positioning spring and a steel ball guide sleeve, wherein the positioning steel ball is elastically and telescopically arranged in the steel ball guide sleeve through the positioning spring; the outer side wall of the positioning section of the control hand wheel is provided with a plurality of positioning grooves with different positions in the axial direction, and the positioning steel balls are elastically abutted and press-fitted with the positioning grooves.
Preferably, the outer end of the transmission strip is also provided with a limiting end head for limiting the control hand wheel to be separated due to sliding.
Preferably, the seat adjusting assembly further comprises a shaft sleeve, the shaft sleeve is arranged between the limiting shell and the transmission strip, and the transmission strip is rotatably connected with the limiting shell through the shaft sleeve.
The invention has the following beneficial effects:
1. the tightness adjustment of the chair back means that when people need to adjust the tilting angle of the chair back, the force required by adjusting the chair back is large, if the required force is large, the chair back is tight, and if the required force is small, the chair back is loose; the required tightness of the chair back is related to the body shape of the user, so different users often need to properly adjust the tightness of the chair back; the universal joint is replaced by the original pull rope for transmission, so that the response timeliness of force transmission when the tightness of the chair back is adjusted is improved; the accuracy and the controllability of the tightness adjustment of the chair back are improved; meanwhile, the size of the force arm is effectively improved in a mode of adjusting by adopting the pull rope relatively, the force transmission size of the product during adjustment is improved, the requirement on the force transmission size is improved, the force requirement on a user is reduced, the possibility that the adjusting mechanism is damaged due to overlarge input force when the product is adjusted is effectively reduced, and the service life of the product is prolonged.
2. The chair back inclination adjustment refers to the adjustment of the inclination angle of the chair back when people use the chair; the chair back tilting control assembly of the invention is an assembly for controlling the tilting adjustment of the chair back, namely, whether the chair back can be adjusted or not is controlled, and when the chair back is in an unadjustable state, the tilting angle of the chair back can be determined. The chair back is controlled and regulated by the connecting plate with a plurality of rows of holes, the inclination regulating part, the inclination stay cord and the inclination regulating handle, and the chair back is different from the chair back tightness control assembly which needs to be regulated by a larger driving force and is equivalently used as a control switch, and can be controlled by a smaller force, so the inclination stay cord is used as a control medium, and the chair back has the characteristics of simple structure and convenience in use;
3. the lifting adjustment refers to the adjustment of the height of the chair seat when people use the chair; the lifting adjustment of the invention is implemented on the basis of using a gas spring; the lifting pull rope is controlled by the lifting handle, then the gas spring plectrum is controlled, whether a control point of the gas spring is pressed by the gas spring plectrum or not is judged, and the extending amount of the movable part of the gas spring is adjusted by external force; similarly, the lifting adjusting component of the invention is equivalent to be used as a control switch, and can realize control only with small force, so the lifting pull rope is used as a control medium, and the invention has the characteristics of simple structure and convenient use;
4. the chair seat adjustment is the adjustment of the extending amount of the chair seat in the horizontal direction and the direction right in front of a user when the user uses the chair, and the adjustment has a larger influence on the use comfort of the chair, for example, the user is a child and usually needs a smaller extending amount, for example, the user is an adult and usually needs a larger extending amount; according to the invention, the control hand wheel, the transmission strip, the regulating gear and the regulating rack are adopted to regulate the extending amount of the seat, and the limiting shell is used for limiting the control hand wheel in the rotating direction, so that the control hand wheel cannot rotate due to mistaken touch in a non-regulating state; when the adjustment is needed, the control hand wheel is slightly pulled out, the limit of the limit shell on the control hand wheel can be released, and the extension amount of the chair seat can be adjusted by rotating the control hand wheel; in addition, in order to avoid the control hand wheel from being pulled out due to error touch in a non-adjustment state to enter an adjustable state, the invention is also provided with a positioning steel ball, a positioning spring and a steel ball guide sleeve structure, and the control hand wheel can be prevented from being pulled out due to error touch by elastically pressing a positioning section in the control hand wheel through the positioning steel ball.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a side view of the present invention with the seat attachment member removed;
FIG. 4 is a side view of the present invention with the seat attachment and tray removed;
FIG. 5 is a side view of the present invention with the seat attachment, tray and back attachment removed;
FIG. 6 is an enlarged partial view of FIG. 5;
FIG. 7 is a schematic perspective view of the back slack adjustment control assembly of the present invention;
FIG. 8 is a schematic view of the seat adjustment assembly of the present invention;
the reference numerals are explained below:
1-a tray, 2-a seat connecting piece, 3-a chair back connecting piece, 4-a connecting rod, 5-a triangle adjusting piece, 6-a chair back tightness control component, 7 a-a first hinged arm, 7 b-a second hinged arm, 8-a chair back inclination control component, 9-a lifting adjusting component and 10-a seat adjusting component;
11-a first hinge point, 12-a second hinge point;
31-first hinge, 32-second hinge, 33-free;
4 a-a first end of the link, 4 b-a second end of the link;
51-a first articulation site, 52-a second articulation site, 53-a third articulation site;
61-a control handle of a chair back tightness control component, 62-a universal joint, 63-a transmission rod, 64-a first bevel gear, 65-a second bevel gear, 66-a lifting member, 67-a mounting seat of the lifting member, 68-a tightness adjusting rod and 69-a cross rod;
64 a-first umbrella tooth, 64 b-mounting portion;
65 a-second bevel, 65 b-flat;
66 a-gear portion, 66 b-threaded portion, 66 c-bearing portion;
81-connecting plate, 82-inclination adjusting piece, 83-inclination pulling rope, 84-inclination adjusting handle and 85-inclination adjusting piece mounting seat;
81 a-multiple rows of holes;
82.1-movable bolt, 82.2-actuator, 82.3-first return spring;
82.2 a-connection end, 82.2 b-control part;
91-lifting handle, 92-lifting pull rope, 93-gas spring plectrum and 94-plectrum mounting seat;
101-control hand wheel, 102-regulating gear and 103-regulating rack;
101.1-a hand-holding section, 101.2-a control section and 101.3-a positioning section;
104.1-a limit shell, 104.2-a transmission strip, 104.3-a limit end, 105.1-a positioning steel column, 105.2-a positioning spring, 105.3-a steel ball guide sleeve and 106-a shaft sleeve.
Detailed Description
The invention is further explained below with reference to the drawings of the specification.
The present embodiments are to be considered in all respects as illustrative and not restrictive. Any changes that may be made by one skilled in the art after reading the description of the invention herein will be covered by the patent laws within the scope of the appended claims.
As shown in fig. 1, a chair seat connecting device capable of adjusting a backrest comprises a tray 1 for connecting a gas spring, a chair seat connecting piece 2 for installing a chair cushion, a chair back connecting piece 3, a chair back tightness control component 6, a chair back inclination control component 8, a lifting adjusting component 9 and a chair seat adjusting component 10. The chair seat connecting piece 2 is fixedly connected with the tray 1.
As shown in fig. 3, the pallet 1 has a first hinge point 11 and a second hinge point 12.
As shown in fig. 4, one end of the back link 3 is a first hinge portion 31, and the other end is a free portion 33 for mounting a backrest of a chair, and a second hinge portion 32 is further provided at an upper end of a middle portion of the back link 3.
Referring to fig. 3 and 4, the first hinge 31 is hinged to the first hinge point 11. The second hinge part 32 is hinged with the second hinge point 12 through a connecting rod 4 and a triangular adjusting part 5; the link 4 has a first end 4a and a second end 4 b. The triangular adjusting member 5 has a first hinge point 51 at the top, a second hinge point 52 at the front end of the lower portion and a third hinge point 53 at the rear end of the lower portion, which are triangularly distributed. The second hinge portion 32 is hinged to the first end 4a of the link 4, the second end 4b of the link is hinged to the first hinge point 51 of the triangular adjusting member 5, and the second hinge point 52 of the triangular adjusting member 5 is hinged to the second hinge point 12 of the tray 1.
As shown in fig. 2, 5 and 7, the chair back tightness control assembly 6 comprises a control handle 61, a universal joint 62, a transmission rod 63, a first bevel gear 64, a second bevel gear 65, a lifting member 66, a mounting seat 67 for the lifting member and a tightness adjustment rod 68 which are regulated in a rotating manner. The first bevel gear 64 has a first bevel gear portion 64a and a mounting portion 64b, the mounting portion 64b is fixedly connected with one end of the transmission rod 63, the other end of the transmission rod 63 is fixedly connected with a first end 62a of a universal joint, and a second end 62b of the universal joint is fixedly connected with the control handle 61. The second bevel gear 65 has a second bevel gear part 65a and a flat gear part 65 b; the second bevel gear 65a is engaged with the first bevel gear 64 a. The lifting piece 66 is provided with a gear part 66a, a thread part 66b and a bearing part 66 c; the flat gear part 65b is meshed with the gear part 65a of the lifting piece 66; the lifting member 66 is installed on the mounting seat 67 in a liftable manner by a screw portion 66b thereof. One end of the elastic adjusting rod 68 is fixedly connected with a cross rod 69, and the other end is arranged in the tray 1; the middle of the cross bar 69 is supported on the supporting portion 66c, and both ends thereof are respectively hinged to the third hinge point 53 of the triangle adjusting member 5 by the first hinge arm 7a and the second hinge arm 7 b; and, the cross bar 69 is hinged near the second hinge point 12.
As shown in fig. 2, 5 and 6, the chair back tilting control assembly 8 includes a connecting plate 81 fixedly connected to the chair back connecting member 3, a tilting adjustment member 82, a tilting pull rope 83 and a tilting adjustment handle 84, wherein one end of the tilting pull rope 83 is connected to the tilting adjustment member, and the other end is connected to the tilting adjustment handle 84; the chair back tilt control assembly 8 further includes a mount 85 for a tilt adjustment member. The connecting plate 81 has a plurality of rows of holes 81 a; the tilting adjustment member 82 has a movable latch 82.1 inserted into or removed from the plurality of rows of holes 81a, and an actuating member 82.2 for controlling the movable latch 82.1 to be inserted into or removed from. The actuating component 82.2 is provided with a connecting end 82.2a fixedly connected with one end of the leaning pull rope 83 and a control part 82.2b which is used for controlling the state of the movable bolt 82.1 and is matched and connected with the movable bolt. The other end of the pull rope 83 is fixedly connected with the inclination adjusting handle 84; the tipping adjustment element 82 also comprises a first return spring 82.3 acting on the actuator 82.2 and causing it to return when the movable bolt 82.1 is controlled.
As shown in fig. 2 and 7, the lift adjustment assembly 9 includes a lift handle 91, a lift cord 92, a gas spring finger 93, and a finger mount 94, the gas spring finger 93 including a hinged portion for mounting the gas spring finger to the finger mount and a toggle portion for controlling the gas spring. One end of the lifting pull rope 92 is fixedly connected with the gas spring shifting piece 93 and used for controlling the state of the gas spring shifting piece 93, and the other end of the lifting pull rope 92 is connected with the lifting handle 91; the lifting adjustment assembly 9 further comprises a second return spring acting on the gas spring finger 93 and causing it to return when it is actuated by the gas spring.
As shown in fig. 1 and 2, the seat adjusting assembly 10 includes a control handle 101, an adjusting gear 102 and an adjusting rack 103, which are mounted on the seat, the adjusting gear 102 and the adjusting rack 103 are connected in a matching manner, and the adjusting rack 103 is fixedly connected with respect to the tray 1.
As shown in fig. 8, the seat adjustment assembly 10 further includes a limiting shell 104.1 and a transmission bar 104.2 for limiting the rotation of the control handwheel; the control hand wheel 101 is provided with a hand-holding section 101.1, a control section 101.2 and a positioning section 101.3 which are distributed in a stepped manner, wherein the hand-holding section 101.1 is arranged close to the outside, the control section 101.2 is arranged in the center, and the positioning section 101.3 is arranged close to the inside; the outer side wall of the control section 101.2 is provided with a plurality of axially arranged rotation limiting convex strips distributed in an array manner, the inner wall of the limiting shell 104.1 is provided with a plurality of axially arranged rotation limiting grooves distributed in an array manner, and the rotation limiting convex strips are connected with the rotation limiting grooves in a matching manner; the transmission strip 104.2 is provided with an inner end and an outer end, the inner end is fixedly connected with the regulating gear 102, and the outer end is axially slidably sleeved with the control hand wheel 101; the chair seat adjusting component 10 also comprises a positioning steel ball 105.1, a positioning spring 105.2 and a steel ball guide sleeve 105.3, wherein the positioning steel ball 105.1 is elastically and telescopically arranged in the steel ball guide sleeve 105.3 through the positioning spring 105.2; the outer side wall of the positioning section 101.3 of the control hand wheel 101 is provided with a plurality of positioning grooves with different positions in the axial direction, and the positioning steel balls 105.1 are elastically connected with the positioning grooves in a pressing fit manner. The outer end of the transmission strip 104.2 is also provided with a limit end 104.3 for limiting the control handwheel 101 to be separated due to sliding. The seat adjustment assembly 10 further includes a sleeve 106, the sleeve 106 is disposed between the limiting shell 104.1 and the driving strip 104.2, and the driving strip 104.2 is rotatably connected to the limiting shell 104.1 through the sleeve 106.
Claims (7)
1. A chair seat connecting device with an adjustable backrest comprises a tray (1) used for connecting a gas spring and a chair seat connecting piece (2) used for installing a chair cushion, wherein the chair seat connecting piece (2) is fixedly or movably connected with the tray (1); the method is characterized in that: the tray (1) has a first hinge point (11) and a second hinge point (12); the chair seat connecting device also comprises a chair back connecting piece (3), one end of the chair back connecting piece (3) is provided with a first hinged part (31), and the other end of the chair back connecting piece (3) is provided with a free part (33) for mounting a backrest of a chair; the upper end of the middle part of the chair back connecting piece (3) is also provided with a second hinge part (32), the first hinge part (31) is hinged with a first hinge point (11) of the tray (1), and the second hinge part (32) is hinged with a second hinge point (12) through a connecting rod (4) and a triangular adjusting piece (5); the connecting rod (4) is provided with a first end (4 a) and a second end (4 b), the triangular adjusting piece (5) is provided with a first hinge joint point (51) which is positioned at the top, a second hinge joint point (52) which is positioned at the front end of the lower part and a third hinge joint point (53) which is positioned at the rear end of the lower part in a triangular distribution; the second hinge part (32) is connected with the first end (4 a) of the connecting rod (4), the second end (4 b) of the connecting rod is hinged with the first hinge point (51) of the triangular adjusting piece (5), and the second hinge point (52) of the triangular adjusting piece (5) is hinged with the second hinge point (12) of the tray (1);
the chair seat connecting device also comprises a chair back tightness control component (6), wherein the chair back tightness control component (6) comprises a control handle (61), a universal joint (62), a transmission rod (63), a first bevel gear (64), a second bevel gear (65), a lifting piece (66), a mounting seat (67) of the lifting piece and a tightness adjusting rod (68) which are regulated and controlled in a rotating mode;
the first bevel gear (64) is provided with a first bevel gear part (64 a) and a mounting part (64 b), the mounting part (64 b) is fixedly connected with one end of the transmission rod (63), the other end of the transmission rod (63) is fixedly connected with a first end (62 a) of a universal joint, and a second end (62 b) of the universal joint is fixedly connected with the control handle (61);
the second bevel gear (65) is provided with a second bevel gear part (65 a) and a flat gear part (65 b); the second bevel gear part (65 a) is meshed with the first bevel gear (64 a);
the lifting piece (66) is provided with a gear part (66 a), a threaded part (66 b) and a bearing part (66 c); the flat tooth part (65 b) is meshed with a gear part (65 a) of the lifting piece (66); the lifting piece (66) is arranged on the mounting seat (67) in a lifting way through a thread part (66 b) of the lifting piece;
one end of the elastic adjusting rod (68) is fixedly connected with a cross rod (69), and the other end is arranged in the tray (1); the middle part of the cross bar (69) is loaded on the loading part (66 c), and the two ends of the cross bar are respectively hinged with the third hinge joint point (53) of the triangle adjusting piece (5) through a first hinge arm (7 a) and a second hinge arm (7 b); and the cross bar (69) is hinged close to the second hinge point (12).
2. A seat attachment for an adjustable backrest as claimed in claim 1, wherein: the chair seat connecting device further comprises a chair back inclining and inclining control assembly (8), the chair back inclining and inclining control assembly (8) comprises a connecting plate (81) fixedly connected with the chair back connecting piece (3), an inclining and inclining adjusting piece (82), an inclining and inclining pull rope (83) and an inclining and inclining adjusting handle (84), one end of the inclining and inclining pull rope (83) is connected with the inclining and inclining adjusting piece, and the other end of the inclining and inclining pull rope is connected with the inclining and inclining adjusting handle (84); the chair back inclination control component (8) also comprises a mounting seat (85) of an inclination adjusting piece;
the connecting plate (81) has a plurality of rows of holes (81 a);
the tilting adjusting piece (82) is provided with a movable bolt (82.1) which is embedded or separated relative to the multiple rows of holes (81 a), and an actuating piece (82.2) which controls the movable bolt (82.1) to be embedded or separated, wherein the actuating piece (82.2) is provided with a connecting end (82.2 a) which is fixedly connected with one end of the tilting pull rope (83) and a control part (82.2 b) which is used for controlling the state of the movable bolt (82.1) and is connected with the movable bolt in a matching way; the other end of the pull rope (83) is fixedly connected with the inclination adjusting handle (84); the tilting adjustment element (82) further comprises a first return spring (82.3) acting on the actuating element (82.2) and causing it to produce a return action when controlling the movable bolt (82.1).
3. A seat attachment for an adjustable backrest as claimed in claim 1 or claim 2, wherein: the chair seat connecting device further comprises a lifting adjusting assembly (9), the lifting adjusting assembly (9) comprises a lifting handle (91), a lifting pull rope (92), a gas spring plectrum (93) and a plectrum mounting seat (94), and the gas spring plectrum (93) comprises a hinged part for mounting the gas spring plectrum on the plectrum mounting seat and a toggle part for controlling a gas spring; one end of the lifting pull rope (92) is fixedly connected with the gas spring shifting piece (93) and used for controlling the state of the gas spring shifting piece (93), and the other end of the lifting pull rope (92) is connected with the lifting handle (91); the lifting adjusting assembly (9) further comprises a second reset spring or a reset elastic sheet, wherein the second reset spring or the reset elastic sheet acts on the gas spring shifting sheet (93) and enables the gas spring shifting sheet to generate a reset effect when the gas spring is controlled.
4. A seat attachment for an adjustable backrest as claimed in claim 1 or claim 2, wherein: seat support connecting device still includes seat support adjusting part (10), seat support adjusting part (10) are including installing control hand wheel (101), regulation and control gear (102) and regulation and control rack (103) of seat support, regulation and control gear (102) and regulation and control rack (103) cooperation are connected, and regulation and control rack (103) relative tray (1) fixed connection.
5. A seat attachment for an adjustable backrest as claimed in claim 4, wherein: the seat adjusting assembly (10) also comprises a limiting shell (104.1) and a transmission bar (104.2) which limit the rotation of the control handwheel; the control hand wheel (101) is provided with a hand-holding section (101.1), a control section (101.2) and a positioning section (101.3) which are distributed in a stepped manner, the hand-holding section (101.1) is arranged close to the outside, the control section (101.2) is arranged in the center, and the positioning section (101.3) is arranged close to the inside; the outer side wall of the control section (101.2) is provided with a plurality of axially arranged rotation limiting convex strips distributed in an array manner, the inner wall of the limiting shell (104.1) is provided with a plurality of axially arranged rotation limiting grooves distributed in an array manner, and the rotation limiting convex strips are connected with the rotation limiting grooves in a matching manner; the transmission strip (104.2) is provided with an inner end and an outer end, the inner end is fixedly connected with the regulating gear (102), and the outer end is in axial sliding sleeve joint with the control hand wheel (101); the chair seat adjusting assembly (10) further comprises a positioning steel ball (105.1), a positioning spring (105.2) and a steel ball guide sleeve (105.3), wherein the positioning steel ball (105.1) is elastically and telescopically arranged in the steel ball guide sleeve (105.3) through the positioning spring (105.2); the outer side wall of the positioning section (101.3) of the control hand wheel (101) is provided with a plurality of positioning grooves with different positions in the axial direction, and the positioning steel balls (105.1) are elastically abutted and press-fitted with the positioning grooves.
6. A seat attachment for an adjustable backrest as claimed in claim 5, wherein: the outer end of the transmission strip (104.2) is also provided with a limiting end head (104.3) for limiting the control hand wheel (101) to be separated out due to sliding.
7. A seat attachment for an adjustable backrest as claimed in claim 5, wherein: the seat adjusting assembly (10) further comprises a shaft sleeve (106), the shaft sleeve (106) is arranged between the limiting shell (104.1) and the transmission bar (104.2), and the transmission bar (104.2) is rotatably connected relative to the limiting shell (104.1) through the shaft sleeve (106).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468052.7A CN111528639A (en) | 2020-05-28 | 2020-05-28 | Chair seat connecting device with adjustable backrest |
| PCT/CN2020/095705 WO2021237811A1 (en) | 2020-05-28 | 2020-06-12 | Seat connection apparatus having adjustable backrest |
| US17/623,044 US11751691B2 (en) | 2020-05-28 | 2020-06-12 | Seat connecting device with adjustable backrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468052.7A CN111528639A (en) | 2020-05-28 | 2020-05-28 | Chair seat connecting device with adjustable backrest |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111528639A true CN111528639A (en) | 2020-08-14 |
Family
ID=71969878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010468052.7A Pending CN111528639A (en) | 2020-05-28 | 2020-05-28 | Chair seat connecting device with adjustable backrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111528639A (en) |
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| CN113229655A (en) * | 2021-04-22 | 2021-08-10 | 安吉德卡办公***有限公司 | Chair seat mechanism |
| CN113229663A (en) * | 2021-05-25 | 2021-08-10 | 安吉德卡办公***有限公司 | Chair back adjusting mechanism |
| CN116058621A (en) * | 2023-02-24 | 2023-05-05 | 安吉德卡办公***有限公司 | Chair seat |
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| CN106724258A (en) * | 2016-12-31 | 2017-05-31 | 浙江恒林椅业股份有限公司 | The reclining governor motion and chair of the chair back |
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| CN212815331U (en) * | 2020-05-28 | 2021-03-30 | 安吉德卡办公***有限公司 | Chair seat connecting device with adjustable backrest |
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| CN106724257A (en) * | 2016-12-31 | 2017-05-31 | 浙江恒林椅业股份有限公司 | Chair frame and the chair using the chair frame |
| CN106724258A (en) * | 2016-12-31 | 2017-05-31 | 浙江恒林椅业股份有限公司 | The reclining governor motion and chair of the chair back |
| CN109393798A (en) * | 2018-11-01 | 2019-03-01 | 安吉德卡办公***有限公司 | A kind of adjusting seat tool back frame reclining and elastic wire-controlled apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113229655A (en) * | 2021-04-22 | 2021-08-10 | 安吉德卡办公***有限公司 | Chair seat mechanism |
| CN113229655B (en) * | 2021-04-22 | 2022-01-21 | 安吉德卡办公***有限公司 | Chair seat mechanism |
| CN113229663A (en) * | 2021-05-25 | 2021-08-10 | 安吉德卡办公***有限公司 | Chair back adjusting mechanism |
| CN113229663B (en) * | 2021-05-25 | 2022-02-15 | 安吉德卡办公***有限公司 | Chair back adjusting mechanism |
| WO2022247149A1 (en) * | 2021-05-25 | 2022-12-01 | 安吉德卡办公***有限公司 | Chair back adjusting mechanism |
| CN116058621A (en) * | 2023-02-24 | 2023-05-05 | 安吉德卡办公***有限公司 | Chair seat |
| CN116058621B (en) * | 2023-02-24 | 2024-02-13 | 安吉德卡办公***有限公司 | Chair seat |
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