CN113966930A - Screw rod link transmission type backrest lumbar support linkage lifting mechanism and seat - Google Patents
Screw rod link transmission type backrest lumbar support linkage lifting mechanism and seat Download PDFInfo
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- CN113966930A CN113966930A CN202111355458.5A CN202111355458A CN113966930A CN 113966930 A CN113966930 A CN 113966930A CN 202111355458 A CN202111355458 A CN 202111355458A CN 113966930 A CN113966930 A CN 113966930A
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- 210000001624 hip Anatomy 0.000 description 100
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- 238000000034 method Methods 0.000 description 5
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- 230000009471 action Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 125000003003 spiro group Chemical group 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 208000008035 Back Pain Diseases 0.000 description 1
- 241001456553 Chanodichthys dabryi Species 0.000 description 1
- 208000008930 Low Back Pain Diseases 0.000 description 1
- 206010041591 Spinal osteoarthritis Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 208000036319 cervical spondylosis Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 210000004197 pelvis Anatomy 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- 208000005801 spondylosis Diseases 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—Supports for the head or the back
- A47C7/40—Supports for the head or the back for the back
- A47C7/402—Supports for the head or the back for the back adjustable in height
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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—Supports for the head or the back
- A47C7/40—Supports for the head or the back for the back
- A47C7/46—Supports for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Supports 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The invention belongs to the field of furniture, and particularly relates to a screw rod connecting rod transmission type backrest and waist support linkage lifting mechanism and a seat. The invention can realize the linkage lifting of the waist support and the backrest, and can enlarge the whole use area of the backrest when lifting so as to ensure that the seat is matched with people with different heights and body types.
Description
Technical Field
The invention belongs to the field of furniture, and particularly relates to a screw rod connecting rod transmission type backrest and waist support linkage lifting mechanism and a seat.
Background
The seat is common furniture among the daily life, because the occasion that office study seat used is comparatively special, the user needs to sit for a long time, consequently, office study seat's back of the chair module need contain back and waist support usually to provide comfortable experience sensation for the user. However, the backrest and the waist support in the traditional office and study chair are generally fixed structures, and the height of the chair cannot be adjusted, so that the requirements of people with different statures cannot be met simultaneously.
Patent CN2827141Y discloses an ergonomic chair called a comfortable spine chair capable of maintaining the physiological curvature of the spine and preventing and treating lumbago and cervical spondylosis. Comprises a chair seat, a chair seat and a chair back from bottom to top. The chair surface is short, and the upper surface of the chair surface is provided with a depression called an ischial tuberosity pit which can prevent the ischial tuberosity from sliding forwards; the chair back is columnar, a waist support, a chest support and a neck support are arranged in front of the chair back from bottom to top and are movably connected with the chair back by virtue of a waist support handle, a chest support handle and a neck support handle respectively. The connection mode can be U-shaped inserted bar or latch or screw thread, and can also be adjusted by a motor. The lumbar support positioned in the middle of the front of the chair back and horizontal to the lumbar can prevent the pelvis from tilting backwards and maintain the lumbar curvature of the spine in a personalized way. The chest support positioned at the level of the thoracic vertebra can maintain normal chest curvature and prevent humpback. The C-shaped neck support positioned above the chair back is used for maintaining the physiological bending of the cervical vertebra; the C-shaped support encircles the top and can generate the effect of cervical vertebra traction when the position is heightened.
The above-mentioned comfortable spine chair has the following problems:
1) the backrest and the waist support can only be separately and independently operated when needing independent height, and the height of the backrest and the height of the waist support cannot be simultaneously adjusted.
2) The area of the whole structure of the backrest is fixed and cannot be adjusted.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a screw rod connecting rod transmission type backrest waist support linkage lifting mechanism and a technical scheme of a seat.
The invention provides a screw rod connecting rod transmission type backrest waist support linkage lifting mechanism, which comprises:
the waist support mounting piece is used for mounting a waist support;
a first back mount to mount a first back;
the first backrest mounting piece and the second backrest mounting piece are arranged oppositely left and right, and the waist support mounting piece is positioned at the lower ends of the first backrest mounting piece and the second backrest mounting piece; and
a lifting assembly for actuating the lumbar support mounting member, the first backrest mounting member and the second backrest mounting member to be lifted simultaneously.
It can be understood that above-mentioned technical scheme passes through lifting unit and drives waist simultaneously and hold in the palm installed part, first back installed part and the lift of second back installed part, can realize that the waist holds in the palm the linkage with the back and goes up and down.
The movement tracks of the first backrest installation part and the second backrest installation part are obliquely arranged, and the movement tracks of the first backrest installation part and the second backrest installation part form an inverted splayed structure.
It can be understood that, according to the technical scheme, the moving tracks of the first backrest installation part and the second backrest installation part are arranged to be of a splayed structure, so that the rising time interval of the first backrest installation part and the second backrest installation part is increased, and the purpose of expanding the whole use area of the chair back is achieved.
Further, elevating system still includes the first link unit and the second link unit of controlling two relative settings, and first link unit is connected with waist support installed part and first back installed part cooperation respectively, and second link unit is connected with waist support installed part and second back installed part cooperation respectively.
It can be understood that first link unit and second link unit are as transmission part, can hold in the palm installed part, first back installed part and second back installed part with lifting unit's power transmission to waist, realize that the three links and go up and down.
Further, when the waist support mounting piece, the first backrest mounting piece and the second backrest mounting piece are lifted and lowered simultaneously, in the vertical direction, the first connecting rod unit and the second connecting rod unit can enable the moving speed of the waist support mounting piece to be smaller than the moving speed of the first backrest mounting piece and the second backrest mounting piece through folding and unfolding.
It can be understood that when the connecting rod unit is folded and unfolded, the whole length of the connecting rod unit in the vertical direction can be changed, and the distance between the waist support mounting piece and the backrest mounting piece can be naturally changed.
Further, lifting unit is including can reciprocating and the lift driving medium of latched position, and the lift driving medium can drive waist simultaneously and hold in the palm installed part, first back installed part and second back installed part and remove through first link unit and second link unit when reciprocating.
It can be understood that the lift driving medium links to the connecting rod unit through going up and down, and the connecting rod unit links to the waist again and holds in the palm installed part, first back installed part and second back installed part, and then realizes that the waist holds in the palm the removal when installed part, first back installed part and second back installed part.
Furthermore, the connecting rod unit comprises a first connecting rod, a second connecting rod and a third connecting rod, the lifting transmission part is used for driving the first connecting rod to move, the first connecting rod is used for driving the second connecting rod to move, the second connecting rod is used for driving the waist support mounting part to move and driving the third connecting rod to move, and the third connecting rod is used for driving the corresponding backrest mounting part to move.
It can be understood that the three connecting rods respectively play their roles, the structure is compact and simple, the first connecting rod is used as a main power input part, the second connecting rod and the third connecting rod are used as power output parts and are respectively used for driving the waist support mounting part and the corresponding backrest mounting part to move, and the second connecting rod and the third connecting rod form a main body of the connecting rod unit folding and unfolding structure.
Furthermore, first connecting rod one end is connected with the rotation of lift driving medium, and the other end is connected with the rotation of second connecting rod, and second connecting rod one end is connected with the rotation of waist support installed part, and the other end is connected with the rotation of third connecting rod, and the third connecting rod rotates with the back installed part that corresponds and is connected.
It can be understood that the first connecting rod, the second connecting rod and the third connecting rod are connected in this way, and the structure is the simplest and most effective.
Further, elevating system still includes the fixing base, the upper end and the fixing base sliding connection of transmission connecting rod.
It can be understood that the guide is provided for the transmission connecting rod through the fixed seat, and the operation of the connecting rod unit can be more stable.
Furthermore, the lifting assembly further comprises a screw rod and a driving unit, the screw rod is in threaded connection with the lifting transmission part, and the driving unit is used for driving the screw rod to rotate.
It can be understood that the mode that the lifting transmission part is driven to move up and down through the screw rod is simple and effective, and can be self-locked.
Further, elevating system still includes the base, and waist holds in the palm installed part, first back installed part and second back installed part respectively with base sliding connection.
It will be appreciated that such an arrangement enables the lumbar support mount, the first backrest mount and the second backrest mount to be moved more stably.
Further, lifting unit includes lead screw and drive unit, and the lead screw holds in the palm the installed part spiro union cooperation with the waist, and drive unit is used for driving the lead screw and rotates, and lifting unit is used for driving the waist and holds in the palm the installed part and reciprocate, and the waist holds in the palm the installed part and drives first back installed part through first connecting rod unit and reciprocate, and the waist holds in the palm the installed part and drives the removal of second back installed part through second connecting rod unit.
It can be understood that the mode that drives the waist support mounting part to move up and down through the lead screw is simple and effective, and can be self-locked.
Furthermore, the connecting rod unit comprises a fourth connecting rod and a fifth connecting rod, the waist support mounting piece is used for driving the fourth connecting rod to move, the fourth connecting rod is used for driving the fifth connecting rod to move, and the fifth connecting rod is used for driving the corresponding backrest mounting piece to move.
It can be understood that the link unit in this solution is simpler in structure.
Furthermore, the lifting mechanism also comprises a base, one end of a fourth connecting rod is rotatably connected with the base, the other end of the fourth connecting rod is rotatably connected with a fifth connecting rod, the fifth connecting rod is rotatably connected with a corresponding backrest mounting piece, and a waist support mounting piece is rotatably connected with the fourth connecting rod; the first backrest mounting part and the second backrest mounting part are respectively connected with the base in a sliding mode.
It can be understood that the fourth connecting rod and the fifth connecting rod are connected in this way, and the structure is the simplest and most effective. And, set up first back installed part and second back installed part respectively with base sliding connection, can make first back installed part and second back installed part move more stably.
Further, drive unit includes gear box and power supply, the gear box is used for driving the lead screw and rotates, the power supply is used for driving the gear box activity, and the power supply is manual formula drive structure or electrodynamic type drive structure.
It can be understood that the gear box is mainly used for changing the power transmission direction, and the power source can adopt a manual driving structure or an electric driving structure according to actual requirements.
Compared with the prior art, the screw rod connecting rod transmission type backrest waist support linkage lifting mechanism provided by the invention has the beneficial effects that:
1) the lifting of the backrest and the waist support is realized through the screw rod and the connecting rod unit, so that the operation is more labor-saving;
2) the lifting and locking of the screw rod are used, so that the stepless lifting of the backrest and the waist support is realized, the precision is higher, the positioning is more accurate, and the lifting device is suitable for different lifting body types of children;
3) the backrest and the waist support are linked, the backrest and the waist support can be adjusted simultaneously by one-step operation, and the operation is more convenient;
4) the backrest and the waist support realize the movement speed difference through the connecting rod unit, the relative distance between the backrest and the waist support can be automatically adjusted in the process of lifting simultaneously, the left-right distance of the backrest and the waist support can also be automatically adjusted, and the backrest and the waist support can be more suitable for the change trend of the back and the waist when children grow.
The utility model provides a seat, the back of the chair module of seat includes that the waist holds in the palm, first back, second back and as above elevating system, elevating system's waist holds in the palm the installed part and holds in the palm the cooperation with the waist and be connected, elevating system's first back installed part and first back cooperation are connected, elevating system's second back installed part and second back cooperation are connected.
The chair provided by the invention comprises the lifting mechanism, and the specific structure, the connection relation, the beneficial effects and the like of the lifting mechanism are described in detail in the characters, so that the details are not repeated.
Drawings
FIG. 1 is a schematic view of the structure of the lumbar support, the first backrest and the second backrest in connection with embodiment 1;
FIG. 2 is a schematic structural view of the embodiment 1;
FIG. 3 is a second schematic structural view of embodiment 1;
FIG. 4 is a second schematic structural view of the waist support, the first backrest and the second backrest of the embodiment 1;
FIG. 5 is a third schematic structural view of the connection between the waist support, the first backrest and the second backrest in the embodiment 1;
FIG. 6 is a schematic view showing an inner structure of the lumbar support, the first backrest and the second backrest in connection with embodiment 2;
FIG. 7 is a schematic view of the internal structure of embodiment 2;
FIG. 8 is an exploded view of the lumbar support, the first backrest and the second backrest of example 2;
FIG. 9 is a schematic view showing the structure of the lumbar support, the first backrest and the second backrest in connection with embodiment 2;
FIG. 10 is a schematic view showing the structure of the lumbar support, the first backrest and the second backrest in connection with embodiment 2;
FIG. 11 is a schematic structural view of example 3;
FIG. 12 is a schematic structural view of example 4.
Detailed Description
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
The invention will be further explained with reference to the drawings.
Example 1
Referring to fig. 1-5, the present embodiment provides a screw rod and link rod transmission type backrest waist support linkage lifting mechanism, which includes two waist support mounting members 1, a first backrest mounting member 3, a second backrest mounting member 5 and a lifting assembly.
Two waist support installed part 1 are controlled the setting for the installation waist holds in the palm 2, and every waist holds in the palm fixed connection waist on the installed part 1 and holds in the palm installation piece 100, and the vertical setting of moving trajectory of installed part 1 is held in the palm to the waist.
The first backrest installation part 3 is used for installing the first backrest 4, a first backrest installation block 300 is fixedly connected to the first backrest installation block, and the moving track of the first backrest installation part 3 is obliquely arranged.
The second backrest installation part 5 is used for installing a second backrest 6, a second backrest installation block 500 is fixedly connected onto the second backrest installation part, the moving track of the second backrest installation part 5 is obliquely arranged, the first backrest installation part 3 and the second backrest installation part 5 are oppositely arranged left and right, the moving tracks of the first backrest installation part and the second backrest installation part form an inverted splayed structure, and the waist support installation part is located at the lower ends of the first backrest installation part and the second backrest installation part.
The lifting assembly is used for driving the waist support mounting piece 1, the first backrest mounting piece 3 and the second backrest mounting piece 5 to lift simultaneously.
Wherein the first and second backrest mounts 3, 5 are collectively referred to as backrest mounts; the first backrest 4 and the second backrest 6 are collectively referred to as a backrest. The two lumbar support mounts 1 may be fixed as one.
Continuing to refer to fig. 2, the lifting mechanism further includes a first link unit and a second link unit, which are oppositely disposed at left and right sides, the first link unit is respectively connected with the waist support mounting member 1 and the first backrest mounting member 3 in a matching manner, and the second link unit is respectively connected with the waist support mounting member 1 and the second backrest mounting member 5 in a matching manner. When waist held in the palm installed part 1, first back installed part 3 and second back installed part 5 go up and down simultaneously, in vertical direction, first link unit and second link unit can make the moving speed that waist held in the palm installed part 1 be less than the moving speed of first back installed part 3 and second back installed part 5 through folding and expansion.
The first link unit and the second link unit are collectively referred to as a link unit, and the link is not limited to a rod-shaped structure, and may be a plate-shaped structure, a block-shaped structure, or the like.
Continuing to refer to fig. 2, the lifting assembly comprises a lifting transmission member 7, a screw rod 12 and a driving unit, the screw rod 12 is in threaded connection with the lifting transmission member 7, the driving unit is used for driving the screw rod 12 to rotate, the lifting transmission member 7 can move up and down and lock the position, and the lifting transmission member 7 can simultaneously drive the waist support installation member 1, the first backrest installation member 3 and the second backrest installation member 5 to move through the first connecting rod unit and the second connecting rod unit when moving up and down.
With reference to fig. 2, the driving unit includes a gear box 13 and a power source, the gear box 13 is used to drive the screw rod 12 to rotate, the power source is used to drive the gear box 13 to move, the power source is preferably a rotary switch 17, and includes a knob and an input shaft, the input shaft is in transmission fit with the gear box 13, the gear box 13 can change the power transmission direction, and the horizontally input force is output vertically. The structure of the gear case 13 can refer to embodiment 2. In addition, the power source can also adopt a motor.
In some embodiments, the lifting drive 7 may also be configured as a slider that is moved up and down by pulling on a handle, which slider is locked by tightening a knob bolt when locking is desired.
Continuing to refer to fig. 2, the link unit includes a first link 8, a second link 9 and a third link 10, the lifting transmission member 7 is used to drive the first link 8 to move, the first link 8 is used to drive the second link 9 to move, the second link 9 is used to drive the waist support mounting member 1 to move and drive the third link 10 to move, and the third link 10 is used to drive the corresponding backrest mounting member to move. Specifically, 8 one end of first connecting rod rotates with lift driving medium 7 and is connected, and the other end rotates with second connecting rod 9 and is connected, and 9 one end of second connecting rod rotates with waist support installed part 1 and is connected, and the other end rotates with third connecting rod 10 and is connected, and third connecting rod 10 rotates with the back installed part that corresponds and is connected.
With reference to fig. 2, the lifting mechanism further includes a fixing seat 11, and the upper end of the transmission link 9 is slidably connected to the fixing seat 11. Specifically, the fixing seat 11 is located at the upper end of the lifting transmission member 7, two sides of the fixing seat are respectively provided with obliquely arranged sliding grooves 1100, and the transmission connecting rods 9 of the two connecting rod units are respectively in sliding connection with the corresponding sliding grooves 1100.
With reference to fig. 2, the lifting mechanism further includes a base 14, the lumbar support mounting member 1, the first backrest mounting member 3, and the second backrest mounting member 5 are slidably connected to the base 14, and the fixing seat 11 is fixedly connected to the base 14. Specifically, a first slide rail 18, a second slide rail 19 and a third slide rail 20 are arranged on the base 14, the first slide rail 18 is slidably connected with the lumbar support mounting part 1, the second slide rail 19 is slidably connected with the first backrest mounting part 3, and the third slide rail 20 is slidably connected with the second backrest mounting part 5. The setting direction of the slide rail is the same as the setting direction of the moving track of the mounting piece.
The ascending operation process:
the rotary switch 17 is rotated, the rotary switch 17 drives the gear box 13 to work, the gear box 13 drives the screw rod 12 to rotate, the screw rod 12 drives the lifting transmission member 7 to move upwards, and the lifting transmission member 7 drives the waist support mounting member 1 and the backrest mounting member to move upwards through the two connecting rod units. In the upward movement process, the movement locus of the first backrest mounting member 3 and the second backrest mounting member 5 forms an inverted-splayed structure, and therefore, the distance between the two members is increased. Meanwhile, the connecting rod unit can be unfolded under the driving of the lifting transmission part 7, so that the length of the whole connecting rod unit in the vertical direction is increased, and the distance between the waist support installation part 1 and the corresponding backrest installation part is increased.
The advantages of this embodiment are:
(1) the backrest and the waist support move along the direction of the slide rail, the waist support can move up and down, and the backrest can move obliquely, so that size adjustment is realized;
(2) the backrest and the waist support can realize synchronous linkage under the action of the connecting rod unit;
(3) the sliding groove can control the motion trail of the connecting rod unit so as to control the motion trail of the backrest and the waist support;
(4) the different moving speeds of the backrest and the waist support are realized by utilizing the change of the angle of the connecting rods with different lengths during the movement;
(5) the rotary switch realizes reversing control screw rod transmission through a gear box;
(6) the adjusting speed and the adjusting force can be controlled by changing the screw pitch of the screw rod;
(7) the lifting transmission part is internally provided with a screw thread matched with the screw rod, and the lifting transmission part and the screw thread realize matched transmission;
(9) the positioning is realized by utilizing the locking force of the screw rod, and the displacement cannot be generated during the use.
Example 2
Referring to fig. 6-10, the present embodiment provides a screw rod and link transmission type backrest waist support linkage lifting mechanism, which includes a waist support mounting member 1, a first backrest mounting member 3, a second backrest mounting member 5 and a lifting assembly.
The waist holds in the palm installed part 1 and is used for installing waist and holds in the palm 2, and the fixed connection waist holds in the palm the installation piece 100 on the waist holds in the palm installed part 1, and the moving trajectory of waist support installed part 1 sets up vertically.
The first backrest installation part 3 is used for installing the first backrest 4, a first backrest installation block 300 is fixedly connected to the first backrest installation block, and the moving track of the first backrest installation part 3 is obliquely arranged.
The second backrest installation part 5 is used for installing a second backrest 6, a second backrest installation block 500 is fixedly connected onto the second backrest installation part, the moving track of the second backrest installation part 5 is obliquely arranged, the first backrest installation part 3 and the second backrest installation part 5 are oppositely arranged left and right, the moving tracks of the first backrest installation part and the second backrest installation part form an inverted splayed structure, and the waist support installation part 1 is located below the first backrest installation part and the second backrest installation part.
The lifting assembly is used for driving the waist support mounting piece 1, the first backrest mounting piece 3 and the second backrest mounting piece 5 to lift simultaneously.
Wherein the first and second backrest mounts 3, 5 are collectively referred to as backrest mounts; the first backrest 4 and the second backrest 6 are collectively referred to as a backrest. The two lumbar support mounts 1 may be fixed as one.
Continuing to refer to fig. 7, the lifting mechanism further includes a first link unit and a second link unit, which are oppositely disposed at left and right sides, the first link unit is respectively connected with the waist support mounting member 1 and the first backrest mounting member 3 in a matching manner, and the second link unit is respectively connected with the waist support mounting member 1 and the second backrest mounting member 5 in a matching manner. When waist held in the palm installed part 1, first back installed part 3 and second back installed part 5 go up and down simultaneously, in vertical direction, first link unit and second link unit can make the moving speed that waist held in the palm installed part 1 be less than the moving speed of first back installed part 3 and second back installed part 5 through folding and expansion.
The first link unit and the second link unit are collectively referred to as a link unit, and the link is not limited to a rod-shaped structure, and may be a plate-shaped structure, a block-shaped structure, or the like. And, the backrest mount is a tubular structure, and the main body of the link unit is located in the backrest mount.
Continuing to refer to fig. 7, the lifting assembly includes lead screw 12 and drive unit, and lead screw 12 and waist support installed part 1 spiro union cooperation, drive unit are used for driving lead screw 12 to rotate, can drive waist support installed part 1 and reciprocate when lead screw 12 rotates, and waist support installed part 1 drives first back installed part 3 through first connecting rod unit and reciprocates, and waist support installed part 1 drives second back installed part 5 through second connecting rod unit and reciprocates.
With continuing reference to fig. 8, the driving unit includes a gear box 13 and a power source, the gear box 13 is used to drive the screw rod 12 to rotate, the power source is used to drive the gear box 13 to move, the power source is preferably a rotary switch 17, which includes a knob and an input shaft, the input shaft is in transmission fit with the gear box 13, the gear box 13 can change the power transmission direction, and the horizontally input force is output vertically. In addition, the power source can also adopt a motor.
Referring further to fig. 8, the gear box 13 has an input bevel 1300 provided on the rotary switch 17 and an output bevel 1301 provided on the screw 12, the input bevel 1300 meshing with the output bevel 1301.
With reference to fig. 7, the link unit includes a fourth link 15 and a fifth link 16, the lumbar support mounting member 1 is used to drive the fourth link 15 to move, the fourth link 15 is used to drive the fifth link 16 to move, and the fifth link 16 is used to drive the corresponding backrest mounting member to move.
Specifically, one end of the fourth link 15 is rotatably connected to the lumbar support mounting member 1, the other end of the fourth link is rotatably connected to the fifth link 16, and the fifth link 16 is rotatably connected to the corresponding backrest mounting member.
With continued reference to fig. 7 and 8, the lift assembly further includes a base 14, and the first and second back mounts 3 and 5, respectively, are slidably coupled to the base 14. Specifically, the base 14 is a cover structure that is separately provided and fixed by a bolt combination, the base 14 is provided with a first guide groove 1400 and a second guide groove 1401, the first guide groove 1400 is slidably connected with the first backrest mounting part 3, and the second guide groove 1401 is slidably connected with the second backrest mounting part 5.
The ascending operation process:
the rotary switch 17 is rotated, the rotary switch 17 drives the gear box 13 to work, the gear box 13 drives the screw rod 12 to rotate, the screw rod 12 drives the waist support mounting piece 1 to move upwards, and the waist support mounting piece 1 simultaneously drives the first backrest mounting piece 3 and the second backrest mounting piece 5 to move upwards through the two connecting rod units. In the upward movement process, the movement locus of the first backrest mounting member 3 and the second backrest mounting member 5 forms an inverted-splayed structure, and therefore, the distance between the two members is increased. Meanwhile, the connecting rod unit can be unfolded under the driving of the waist support mounting piece 1, so that the length of the whole connecting rod unit in the vertical direction is increased, and the distance between the waist support mounting piece 1 and the backrest mounting piece is increased.
The advantages of this embodiment are:
(1) the waist support can move up and down, and the backrest can move obliquely, so that the size adjustment is realized;
(2) the backrest and the waist support can realize synchronous linkage under the transmission action of the connecting rod unit;
(3) the different movement speeds of the backrest and the waist support are realized by utilizing the change of the angle of the connecting rod unit during movement, so that the distance between the backrest and the waist support is automatically adjusted;
(4) the guide groove can control the movement track of the connecting rod unit so as to control the movement track of the backrest, and the guide groove can increase the stability;
(5) the gear box is arranged to realize the reversing of transmission;
(6) the movement speed and the adjusting force can be adjusted by changing the screw pitch of the screw rod or the gear ratio of the gear;
(7) the waist support mounting piece is internally provided with a screw thread matched with the screw rod, and the waist support mounting piece and the screw thread realize matched transmission;
example 3
Referring to fig. 11, a chair back module of a chair includes a lumbar support 2, a first backrest 4, a second backrest 6 and a lifting mechanism as described in embodiment 1, wherein a lumbar support mounting member 1 of the lifting mechanism is connected with the lumbar support in a matching manner, a first backrest mounting member 3 of the lifting mechanism is connected with the first backrest 4 in a matching manner, and a second backrest mounting member 5 of the lifting mechanism is connected with the second backrest 6 in a matching manner.
Example 4
Referring to fig. 12, a chair back module of the chair includes a lumbar support 2, a first backrest 4, a second backrest 6 and a lifting mechanism as described in embodiment 2, wherein a lumbar support mounting member 1 of the lifting mechanism is connected with the lumbar support in a matching manner, a first backrest mounting member 3 of the lifting mechanism is connected with the first backrest 4 in a matching manner, and a second backrest mounting member 5 of the lifting mechanism is connected with the second backrest 6 in a matching manner.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (15)
1. The utility model provides a screw rod connecting rod transmission type back waist holds in palm linkage elevating system which characterized in that includes:
the waist support mounting piece (1), the waist support mounting piece (1) is used for mounting the waist support (2);
a first backrest mounting (3), the first backrest mounting (3) being for mounting a first backrest (4);
the backrest comprises a first backrest mounting piece (5), a second backrest mounting piece (5) is used for mounting a second backrest (6), the first backrest mounting piece (3) and the second backrest mounting piece (5) are oppositely arranged left and right, and a waist support mounting piece (1) is positioned at the lower ends of the first backrest mounting piece and the second backrest mounting piece; and
a lifting assembly for driving the waist support mounting member (1), the first backrest mounting member (3) and the second backrest mounting member (5) to lift simultaneously.
2. The screw rod connecting rod transmission type backrest waist support linkage lifting mechanism is characterized in that the moving track of the first backrest installation part (3) is obliquely arranged, the moving track of the second backrest installation part (5) is obliquely arranged, and the moving tracks of the first backrest installation part and the second backrest installation part form an inverted splayed structure.
3. The screw rod connecting rod transmission type backrest waist support linkage lifting mechanism is characterized by further comprising a first connecting rod unit and a second connecting rod unit, wherein the first connecting rod unit and the second connecting rod unit are oppositely arranged at the left side and the right side, the first connecting rod unit is respectively matched and connected with the waist support mounting piece (1) and the first backrest mounting piece (3), and the second connecting rod unit is respectively matched and connected with the waist support mounting piece (1) and the second backrest mounting piece (5).
4. The screw rod and connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized in that when the lumbar support mounting part (1), the first backrest mounting part (3) and the second backrest mounting part (5) are lifted and lowered simultaneously, the first connecting rod unit and the second connecting rod unit can enable the moving speed of the lumbar support mounting part (1) to be smaller than the moving speed of the first backrest mounting part (3) and the second backrest mounting part (5) through folding and unfolding in the vertical direction.
5. The screw rod and connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized in that the lifting assembly comprises a lifting transmission member (7) which can move up and down and is locked in a position, and the first connecting rod unit and the second connecting rod unit can simultaneously drive the lumbar support installation member (1), the first backrest installation member (3) and the second backrest installation member (5) to move when the lifting transmission member (7) moves up and down.
6. The screw rod and connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized in that the connecting rod unit comprises a first connecting rod (8), a second connecting rod (9) and a third connecting rod (10), the lifting transmission member (7) is used for driving the first connecting rod (8) to move, the first connecting rod (8) is used for driving the second connecting rod (9) to move, the second connecting rod (9) is used for driving the lumbar support mounting member (1) to move and driving the third connecting rod (10) to move, and the third connecting rod (10) is used for driving the corresponding backrest mounting member to move.
7. A screw rod and connecting rod transmission type backrest and lumbar support linkage lifting mechanism as claimed in claim 6, wherein one end of the first connecting rod (8) is rotatably connected with the lifting transmission member (7), the other end of the first connecting rod is rotatably connected with the second connecting rod (9), one end of the second connecting rod (9) is rotatably connected with the lumbar support mounting member (1), the other end of the second connecting rod is rotatably connected with the third connecting rod (10), and the third connecting rod (10) is rotatably connected with the corresponding backrest mounting member.
8. The screw rod and connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized by further comprising a fixing seat (11), wherein the upper end of the transmission connecting rod (9) is connected with the fixing seat (11) in a sliding mode.
9. The screw rod and connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized in that the lifting assembly further comprises a screw rod (12) and a driving unit, the screw rod (12) is in threaded fit with the lifting transmission member (7), and the driving unit is used for driving the screw rod (12) to rotate.
10. The screw rod and connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized by further comprising a base (14), wherein the lumbar support mounting piece (1), the first backrest mounting piece (3) and the second backrest mounting piece (5) are respectively connected with the base (14) in a sliding mode.
11. The screw rod and connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized in that the lifting assembly comprises a screw rod (12) and a driving unit, the screw rod (12) is in threaded fit with the lumbar support mounting piece (1), the driving unit is used for driving the screw rod (12) to rotate, the lifting assembly is used for driving the lumbar support mounting piece (1) to move up and down, the lumbar support mounting piece (1) drives the first backrest mounting piece (3) to move up and down through the first connecting rod unit, and the lumbar support mounting piece (1) drives the second backrest mounting piece (5) to move through the second connecting rod unit.
12. The screw rod and connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized in that the connecting rod unit comprises a fourth connecting rod (15) and a fifth connecting rod (16), the lumbar support mounting piece (1) is used for driving the fourth connecting rod (15) to move, the fourth connecting rod (15) is used for driving the fifth connecting rod (16) to move, and the fifth connecting rod (16) is used for driving the corresponding backrest mounting piece to move.
13. The screw rod connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized by further comprising a base (14), wherein one end of a fourth connecting rod (15) is rotatably connected with the base (14), the other end of the fourth connecting rod (15) is rotatably connected with a fifth connecting rod (16), the fifth connecting rod (16) is rotatably connected with a corresponding backrest mounting piece, and a lumbar support mounting piece (1) is rotatably connected with the fourth connecting rod (15); the first backrest mounting part (3) and the second backrest mounting part (5) are respectively connected with the base (14) in a sliding mode.
14. The screw rod connecting rod transmission type backrest and lumbar support linkage lifting mechanism is characterized in that the driving unit comprises a gear box (13) and a power source, the gear box (13) is used for driving the screw rod (12) to rotate, the power source is used for driving the gear box (13) to move, and the power source is of a manual driving structure or an electric driving structure.
15. A seat, characterized in that the back module of the seat comprises a lumbar support (2), a first backrest (4), a second backrest (6) and a lifting mechanism as claimed in any of claims 1 to 14, the lumbar support mounting (1) of the lifting mechanism is in fit connection with the lumbar support, the first backrest mounting (3) of the lifting mechanism is in fit connection with the first backrest (4), and the second backrest mounting (5) of the lifting mechanism is in fit connection with the second backrest (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355458.5A CN113966930A (en) | 2021-11-16 | 2021-11-16 | Screw rod link transmission type backrest lumbar support linkage lifting mechanism and seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355458.5A CN113966930A (en) | 2021-11-16 | 2021-11-16 | Screw rod link transmission type backrest lumbar support linkage lifting mechanism and seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113966930A true CN113966930A (en) | 2022-01-25 |
Family
ID=79589815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111355458.5A Pending CN113966930A (en) | 2021-11-16 | 2021-11-16 | Screw rod link transmission type backrest lumbar support linkage lifting mechanism and seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113966930A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478896A (en) * | 2006-06-26 | 2009-07-08 | 道奥菲发展与投资有限公司 | Chair with automatically adjustable lumbar support |
| JP2011117937A (en) * | 2009-11-02 | 2011-06-16 | Ngk Spark Plug Co Ltd | Gas sensor |
| US20120146376A1 (en) * | 2009-08-06 | 2012-06-14 | Jig Won Kang | Chair having an adjustable backrest for spinal protection |
| CN211748243U (en) * | 2020-02-26 | 2020-10-27 | 江珍锋 | Self-adaptive adjusting backrest |
| CN111955983A (en) * | 2020-07-17 | 2020-11-20 | 永艺家具股份有限公司 | Body-building chair |
| CN216416564U (en) * | 2021-11-16 | 2022-05-03 | 浙江护童人体工学科技股份有限公司 | Screw rod connecting rod transmission type backrest and waist support linkage lifting mechanism and seat |
-
2021
- 2021-11-16 CN CN202111355458.5A patent/CN113966930A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478896A (en) * | 2006-06-26 | 2009-07-08 | 道奥菲发展与投资有限公司 | Chair with automatically adjustable lumbar support |
| US20120146376A1 (en) * | 2009-08-06 | 2012-06-14 | Jig Won Kang | Chair having an adjustable backrest for spinal protection |
| JP2011117937A (en) * | 2009-11-02 | 2011-06-16 | Ngk Spark Plug Co Ltd | Gas sensor |
| CN211748243U (en) * | 2020-02-26 | 2020-10-27 | 江珍锋 | Self-adaptive adjusting backrest |
| CN111955983A (en) * | 2020-07-17 | 2020-11-20 | 永艺家具股份有限公司 | Body-building chair |
| CN216416564U (en) * | 2021-11-16 | 2022-05-03 | 浙江护童人体工学科技股份有限公司 | Screw rod connecting rod transmission type backrest and waist support linkage lifting mechanism and seat |
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