CN216627982U - Seat chassis device with automatic force returning function and chair - Google Patents
Seat chassis device with automatic force returning function and chair Download PDFInfo
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- CN216627982U CN216627982U CN202123444132.8U CN202123444132U CN216627982U CN 216627982 U CN216627982 U CN 216627982U CN 202123444132 U CN202123444132 U CN 202123444132U CN 216627982 U CN216627982 U CN 216627982U
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Abstract
The application relates to a seat chassis device with automatic force returning function and a chair. A seat chassis device with automatic return force, described herein, includes: the device comprises a supporting bottom shell, a protective upper cover, a first rotating shaft, a rotating connecting piece, a force returning component and a resisting component; the two ends of the first rotating shaft are respectively fixed on the supporting bottom shell, the bottom of the rotating connecting piece is rotatably connected to the first rotating shaft, and the resisting component is assembled on the supporting bottom shell; the rotary connecting piece and the resisting component are respectively arranged at two ends of the supporting bottom shell; one end of the return force component is connected with the rotating connecting piece, and the other end of the return force component is connected with the resisting component; the protective upper cover is buckled on the supporting bottom shell. The application a seat chassis device with automatic power of returning have the stronger advantage of power of returning.
Description
Technical Field
The present invention relates to a seat, and more particularly, to a seat chassis device with an automatic return force and a seat.
Background
The chair is a seat with a backrest and armrests. Ancient people sit on the ground without chairs, and the 'chair' originally is a wooden name.
The movable seat has the advantages of simple structure, low price, light weight, corrosion resistance, high strength and rigidity, no toxicity, high temperature resistance, strong fire resistance and the like, is made of aluminum alloy materials, and is long in service life and moisture-proof; the surface is smooth and easy to clean; the unique invisible water flow hole design and the process are fine; and (3) a pollution-free production process. The requirement of green and environment protection for cash is met; the modular design makes the installation and maintenance simple; the stand seat has two options of a low backrest and a flat plate, and meets the requirements of various occasions.
In the prior art, a seat or a reclining chair with lifting adjustment has a leg supporting structure, but the leg supporting structure is only provided with a tension spring, so that the rebound effect is not good, and the rebound of a good supporting part cannot be achieved.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is an object of the present invention to provide a seat pan device with automatic return, which has the advantage of a better resilient action of the leg support.
In one aspect of the present application, a seat chassis device with an automatic return force is provided, which includes a supporting bottom shell, a protective upper cover, a first rotating shaft, a rotating connecting member, a return force assembly, and a resisting assembly;
the two ends of the first rotating shaft are respectively fixed on the supporting bottom shell, the bottom of the rotating connecting piece is rotatably connected to the first rotating shaft, and the resisting component is assembled on the supporting bottom shell;
the rotary connecting piece and the resisting component are respectively arranged at two ends of the supporting bottom shell;
one end of the return force component is connected with the rotating connecting piece, and the other end of the return force component is connected with the resisting component;
the protective upper cover is buckled on the supporting bottom shell.
Furthermore, the return force assembly comprises a first connecting shaft, a return force driving kit and a second connecting shaft, two ends of the first connecting shaft are respectively installed on the rotating connecting piece, one side of the resisting assembly, which is back to the rotating connecting piece, is provided with a limiting groove, and the second connecting shaft is tightly installed in the limiting groove;
one end of the return force driving external member is rotatably sleeved on the first connecting shaft, and the other end of the return force driving external member is rotatably sleeved on the second connecting shaft.
Furthermore, the return force driving kit comprises a first connecting column, a second connecting column and a tension spring, wherein one end of the first connecting column is movably sleeved on the first connecting shaft in a penetrating manner, and one end of the second connecting column is movably sleeved on the second connecting shaft in a penetrating manner; two ends of the tension spring are respectively fixed at the other end of the first connecting column and at the other end of the second connecting column;
and a plurality of groups of return force driving external members are respectively arranged between the first connecting shaft and the second connecting shaft.
Further, the rotary connector comprises a mounting plate, a first side plate and a second side plate;
the first side plate and the second side plate are respectively L-shaped;
one end of the first side plate and one end of the second side plate are respectively and rotatably connected to the first rotating shaft,
the mounting plate is fixed at the other end of the first side plate and the other end of the second side plate;
and two ends of the first connecting shaft are respectively fixed in the middle of the first side plate and the middle of the second side plate.
Further, the device also comprises a force adjusting component which is arranged on the supporting bottom shell;
the force adjusting component comprises an adjusting rotating handle, a multi-gear cam and an adjusting shaft; the adjusting rotating handle is arranged at one end of the adjusting shaft, and the multi-gear cam is sleeved in the middle of the adjusting shaft; the adjusting shaft penetrates through the supporting bottom shell, the adjusting rotating handle is arranged outside the supporting bottom shell, and the multi-gear cam is arranged in the supporting bottom shell;
the retaining assembly comprises a second rotating shaft, a retaining vertical plate and a retaining transverse plate, and two ends of the second rotating shaft are respectively and rotatably connected to the supporting bottom shell;
the vertical retaining plate is of a triangular or trapezoidal structure, one side of the bottom of the vertical retaining plate is fixed on the second rotating shaft, the transverse retaining plate is fixed on the other side of the bottom of the vertical retaining plate, and the limiting groove is formed in one side of the top of the vertical retaining plate;
the plurality of retaining vertical plates are arranged in parallel and are respectively fixedly connected with the retaining transverse plates;
the multi-gear cam is abutted against the retaining transverse plate.
Further, the device also comprises an air cylinder adjusting assembly, wherein the air cylinder adjusting assembly comprises a crankshaft, a handle and an adjusting sheet;
one end of the crankshaft is sleeved on the supporting bottom shell in a penetrating mode and is fixedly connected with the adjusting sheet, and the handle is installed at the other end of the crankshaft;
the handle is arranged outside the supporting bottom shell, and the adjusting sheet is arranged in the supporting bottom shell.
Further, the device also comprises a tilt gear adjusting assembly;
the inclined gear adjusting assembly comprises a shifting baffle, a shifting pin, a fixed bent plate, a torsion spring and a shifting block;
the baffle plate is provided with a plurality of gear holes, and the middle part of the baffle plate is tightly sleeved on the first connecting shaft;
the cross section of the fixed curved plate is C-shaped, the bottom end of the fixed curved plate is fixed on the supporting bottom shell, aligning holes are respectively formed in two sides of the fixed curved plate, and the shifting pin is movably sleeved in the two aligning holes;
one end of the torsion spring is fixed on the gear shifting pin, and the other end of the torsion spring is fixed on the gear shifting block;
the shift block is fixedly arranged on the crankshaft;
the gear hole is arranged corresponding to the gear shifting pin.
Furthermore, the inclined gear adjusting assembly further comprises a limiting hook, a limiting cavity is formed in the supporting bottom shell, one end of the limiting hook is fixed to the bottom of the shifting block, and the limiting hook is placed in the limiting cavity in a limiting mode.
Further, the protective cover also comprises a first protective cover, a second protective cover, a third connecting shaft, a fourth connecting shaft and a fifth connecting shaft;
the first protective cover pockets the rotating connecting piece, and two ends of the first protective cover are respectively rotatably connected with the third connecting shaft; the first protective cover is movably arranged relative to the supporting bottom shell and the protective upper cover;
two ends of the third connecting shaft are respectively fixed on the protective upper cover, and one end of the third connecting shaft penetrates through the protective upper cover, the first protective cover, the rotating connecting piece and the baffle plate at one time;
two ends of the fourth connecting shaft are respectively fixed on the protective upper cover, two ends of the fifth connecting shaft are respectively fixed on the supporting bottom shell, the third connecting shaft and the fourth connecting shaft are respectively positioned on two sides of the protective upper cover, and the fifth connecting shaft is positioned below the fourth connecting shaft;
the second protective cover is respectively connected with the fourth connecting shaft and the fifth connecting shaft in a rotating mode.
In another aspect of the present application, a chair capable of being adjusted in a lifting manner is provided, which comprises a cushion, a lifting cylinder, a base, a leg support plate and the seat chassis device with an automatic returning force; the seat chassis device with the automatic return force is arranged between the seat cushion and the lifting cylinder;
a plurality of connecting lugs are formed on the top surface of the protective upper cover;
the cushion is fixedly connected with the protective upper cover through the connecting lugs;
the end part of a piston rod of the lifting cylinder penetrates into the supporting bottom shell;
the base is arranged at the other end of the lifting cylinder; a fixed sleeve is formed on the outer side of the lifting cylinder, and the bottom end of the fixed sleeve is fixed on the base;
the leg support plate is mounted on the swivel connection.
Has the advantages that:
according to the seat chassis device with the automatic return force, the resisting component is arranged to play a role in fixing and resisting the return force component, the rotating connecting piece is arranged, after force is applied to the rotating connecting piece, one end of the return force component is pulled, the resisting component limits the other end of the return force component to move, and therefore the return force component is stretched; finally, the rotating connector is stretched when rotating, and when the acting force on the rotating connector is removed, the rotating connector returns to the original state under the action of the return force assembly. The application the seat chassis device with automatic power of returning, it is big to have structural strength, stable in structure, and reliable effect.
For a better understanding and practice, the present application is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a front view of an exemplary seat pan arrangement with automatic return force of the present application;
FIG. 2 is a perspective view of an exemplary seat pan apparatus with automatic return of the present application;
FIG. 3 is a schematic perspective view of another perspective view of an exemplary seat pan apparatus with automatic return of the present application;
FIG. 4 is a perspective view of an exemplary self-righting seat pan assembly (hidden shield upper cover) of the present application;
FIG. 5 is a schematic perspective view of a portion of an exemplary seat pan apparatus with automatic return of the present application;
FIG. 6 is a perspective view of an exemplary retention assembly and force adjustment assembly of the present application;
FIG. 7 is a perspective view and a side view of an exemplary multiple-speed cam (6 speed shown in the figures) of the present application;
FIG. 8 is a perspective view of an exemplary cylinder adjustment assembly and tilt gear adjustment assembly of the present application;
fig. 9 is a perspective view of an exemplary return force actuation assembly of the present application.
Detailed Description
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1 to 9, an exemplary seat chassis device with automatic returning force of the present application includes a supporting bottom shell 12, a protective upper cover 11, a first rotating shaft 31, a rotating link 20, a returning force assembly 40 and a resisting assembly 50;
two ends of the first rotating shaft 31 are respectively fixed on the supporting bottom shell 12, the bottom of the rotating connecting piece 20 is rotatably connected to the first rotating shaft 31, and the resisting component 50 is assembled on the supporting bottom shell 12;
the rotating connector 20 and the resisting component 50 are respectively installed at two ends of the supporting bottom shell 12;
one end of the return force assembly 40 is connected with the rotating connector 20, and the other end thereof is connected with the resisting assembly 50;
the protective upper cover 11 is buckled on the supporting bottom shell 12.
According to the seat chassis device with the automatic return force, the resisting component 50 is arranged to play a role in fixing and resisting the return force component 40, the rotating connecting piece 20 is arranged, after force is applied to the rotating connecting piece 20, one end of the return force component 40 is pulled, the resisting component 50 limits the movement of the other end of the return force component 40, and therefore the return force component 40 is stretched; eventually causing the rotation to be stretched and the rotation link 20 to return to its original state by the return assembly 40 when the force on the rotation link 20 is removed. The application the seat chassis device with automatic power of returning, it is big to have structural strength, stable in structure, and reliable effect.
The supporting bottom case 12 not only serves as a supporting and connecting function of the supporting frame, but also serves as a protection function of the casing. The protective upper cover 11 not only serves as a protective function of the cover, but also serves as a connecting function. The force of the catch assembly 50 and the rotational coupling 20 is in opposite directions, thereby stretching the return assembly 40.
In some preferred embodiments, the return assembly 40 includes a first connecting shaft 41, a return driving kit, and a second connecting shaft 42, two ends of the first connecting shaft 41 are respectively installed on the rotating connector 20, one side of the resisting assembly 50 facing away from the rotating connector 20 is provided with a limiting groove, and the second connecting shaft 42 is tightly installed in the limiting groove;
one end of the return force driving kit is rotatably sleeved on the first connecting shaft 41, and the other end thereof is rotatably sleeved on the second connecting shaft 42.
By arranging the first connecting shaft 41 and the second connecting shaft 42, the installation and connection of the return force driving kit are facilitated.
In some preferred embodiments, the return driving kit includes a first connecting column 43, a second connecting column 44 and a tension spring 45, wherein one end of the first connecting column 43 movably penetrates and is sleeved on the first connecting shaft 41, and one end of the second connecting column 44 movably penetrates and is sleeved on the second connecting shaft 42; two ends of the tension spring 45 are respectively fixed at the other end of the first connecting column 43 and at the other end of the second connecting column 44;
a plurality of sets of the return force driving kits are respectively arranged between the first connecting shaft 41 and the second connecting shaft 42.
One end of the return force driving sleeve is driven by the acting force, the tension spring 45 is stretched, and after the acting force of the end disappears, the return force driving sleeve returns to the original shape under the action of the tension spring 45.
In some preferred embodiments, the rotational connection 20 includes a mounting plate 21, a first side plate 22, and a second side plate 23;
the first side plate 22 and the second side plate 23 are respectively in an L shape;
one end of the first side plate 22 and one end of the second side plate 23 are respectively rotatably connected to the first rotating shaft 31,
the mounting plate 21 is fixed to the other end of the first side plate 22 and the other end of the second side plate 23;
two ends of the first connecting shaft 41 are respectively fixed at the middle part of the first side plate 22 and the middle part of the second side plate 23.
The first side plate 22 and the second side plate 23 are respectively in an "L" shape, or a structure similar to the "L" shape.
In some preferred embodiments, a force adjustment assembly 60 is further included, the force adjustment assembly 60 being mounted on the support shell 12;
the force adjusting component 60 comprises an adjusting rotating handle 61, a multi-gear cam 63 and an adjusting shaft 62; the adjusting rotating handle 61 is installed at one end of the adjusting shaft 62, and the multi-gear cam 63 is sleeved in the middle of the adjusting shaft 62; the adjusting shaft 62 penetrates through the supporting bottom shell 12, the adjusting rotating handle 61 is arranged outside the supporting bottom shell 12, and the multi-gear cam 63 is arranged in the supporting bottom shell 12;
the resisting component 50 comprises a second rotating shaft 51, a resisting vertical plate 52 and a resisting transverse plate 53, and two ends of the second rotating shaft 51 are respectively and rotatably connected to the supporting bottom shell 12;
the retaining vertical plate 52 is in a triangular or trapezoidal structure, one side of the bottom of the retaining vertical plate is fixed on the second rotating shaft 51, the other side of the bottom of the retaining vertical plate is fixed with the retaining transverse plate 53, and one side of the top of the retaining transverse plate is provided with the limiting groove;
the retaining vertical plates 52 are arranged in parallel and are respectively fixedly connected with the retaining transverse plates 53;
the multi-position cam 63 abuts against the abutting cross plate 53.
A force adjusting component 60 is arranged for adjusting the force at the fixed end. Furthermore, the limiting groove on the retaining vertical plate 52 and the connecting part with the retaining transverse plate 53 rotate around the second rotating shaft 51 respectively, the gears of the multi-gear cam 63 are different, the rotating angle of the limiting groove relative to the second rotating shaft 51 changes, and therefore the stretching amplitude of the tension spring 45 also changes. Finally, the tension spring 45 is easily stretched or not easily stretched to adjust the force.
In a further example, in order to facilitate the rotation of the adjusting shaft 62 relative to the supporting bottom case 12, the force adjusting assembly 60 further includes a sleeve (not shown), the sleeve is sleeved on the adjusting shaft 62 and is rotatably connected to the supporting bottom case 12, an outer wall of the sleeve is circular, and a shape of an inner wall of the sleeve matches a cross-sectional shape of the adjusting shaft 62.
In a further example, the multi-position cam 63 is a six-position cam. Each gear corresponds to a gear surface, and the distance from each gear surface to the axis of the adjusting shaft 62 is gradually increased, so that gear adjustment is realized. The difference between the starting gear and the last gear from the axis is the largest.
In some preferred embodiments, a cylinder adjustment assembly 70 is further included, the cylinder adjustment assembly 70 including a crankshaft 71, a handle 72, and an adjustment tab 73;
one end of the crankshaft 71 is sleeved on the support bottom shell 12 in a penetrating manner and is fixedly connected with the adjusting sheet 73, and the handle 72 is installed at the other end of the crankshaft 71;
the handle 72 is disposed outside the supporting bottom case 12, and the adjusting blade 73 is disposed inside the supporting bottom case 12.
When the air cylinder is used, the handle 72 is pulled, so that the crankshaft 71 rotates relative to the support bottom shell 12, the adjusting piece 73 rotates around the crankshaft 71, and a piston rod of the air cylinder is pressed down.
Further, a through hole M is formed in the middle of the supporting bottom case 12, a limiting block (not labeled in the figure) is disposed at the through hole M, a limiting channel is transversely disposed on the limiting block, and one end of the crankshaft 71 is movably disposed in the limiting channel. Therefore, the crankshaft 71 is limited by the supporting bottom shell 12 and the limiting blocks respectively, so that the crankshaft 71 is always in a transverse state in the motion process.
In some preferred embodiments, a tilt gear adjustment assembly 80 is also included;
the inclined gear adjusting assembly 80 comprises a shift plate 81, a shift pin 82, a fixed curved plate 83, a torsion spring 84 and a shift block 85;
the shift plate 81 is provided with a plurality of shift holes A, and the middle part of the shift plate 81 is tightly sleeved on the first connecting shaft 41;
the cross section of the fixed curved plate 83 is C-shaped, the bottom end of the fixed curved plate 83 is fixed on the supporting bottom shell 12, alignment holes are respectively formed in two sides of the fixed curved plate 83, and the shifting pin 82 is movably sleeved in the two alignment holes;
one end of the torsion spring 84 is fixed on the shift pin 82, and the other end thereof is fixed on the shift block 85;
the shift block 85 is tightly mounted on the crankshaft 71;
the shift hole a is disposed to correspond to the shift pin 82.
By providing the tilt gear adjustment assembly 80, the shift pin 82 can be inserted into different gear holes a, thereby adjusting the original extension amount of the tension spring 45 and adjusting the original tilt angle of the rotating link 20.
In some preferred embodiments, the tilt position adjusting assembly 80 further includes a limiting hook 86, a limiting cavity (not shown) is formed on the supporting bottom shell 12, one end of the limiting hook 86 is fixed at the bottom of the shift block 85, and the limiting hook 86 is placed in the limiting cavity in a limiting manner.
The limit hook 86 can move transversely relative to the limit cavity and also can move longitudinally relative to the limit cavity, but the limit hook 86 cannot be separated from the limit cavity, so that the overlarge rotation angle of the crankshaft 71 is prevented.
Further, the adjusting sheet 73 and the limiting hook 86 face to both sides of the crankshaft 71. Thus, the rotational angle of the adjustment piece 73 can be prevented from being over-traveled.
In some preferred embodiments, a first protective cover 13, a second protective cover 14, a third connecting shaft 16, a fourth connecting shaft 17 and a fifth connecting shaft 18 are further included;
the first protective cover 13 is used for covering the rotating connecting piece 20, and two ends of the first protective cover are respectively and rotatably connected with the third connecting shaft 16; the first protective cover 13 is movably disposed relative to the support bottom case 12 and the protective upper cover 11;
two ends of the third connecting shaft 16 are respectively fixed on the protective upper cover 11, and one end of the third connecting shaft 16 once penetrates through the protective upper cover 11, the first protective cover 13, the rotating connecting piece 20 and the baffle plate 81;
two ends of the fourth connecting shaft 17 are respectively fixed on the protective upper cover 11, two ends of the fifth connecting shaft 18 are respectively fixed on the supporting bottom case 12, the third connecting shaft 16 and the fourth connecting shaft 17 are respectively located on two sides of the protective upper cover 11, and the fifth connecting shaft 18 is located below the fourth connecting shaft 17;
the second protecting cover 14 is respectively connected with the fourth connecting shaft 17 and the fifth connecting shaft 18 in a rotating manner.
The first protecting cover 13 plays a role in containing the rotating connecting piece 20 and protecting, the second protecting cover 14 also plays a role in protecting, and meanwhile, the first protecting cover 13 and the second protecting cover 14 move along with the shape when moving. The first protective cover 13 rotates along with the rotation connector 20, and when the first protective cover 13 rotates, the first protective cover moves along a trajectory corresponding to the outer shape of the support bottom case 12; when the second protective cover 14 rotates, a trajectory corresponding to the outer shape of the support bottom case 12 moves. In addition, both sides of the support bottom case 12 are respectively rounded or arc-shaped.
A chair (not shown) capable of being adjusted in a lifting way comprises a cushion, a lifting cylinder, a base, a leg supporting plate and the seat chassis device with automatic return force;
a plurality of connecting lugs 15 are formed on the top surface of the protective upper cover 11;
the cushion is fixedly connected with the protective upper cover 11 through the connecting lugs 15;
the end part of a piston rod of the lifting cylinder is sleeved in the supporting bottom shell 12;
the base is arranged at the other end of the lifting cylinder; a fixed sleeve is formed on the outer side of the lifting cylinder, and the bottom end of the fixed sleeve is fixed on the base;
the leg support plate is mounted on the swivel connection 20.
Further, the base is a fixed support or a movable support with universal wheels.
Furthermore, the supporting pads are arranged on the leg supporting plates so as to conveniently place the legs on the supporting plates and ensure enough comfort.
The application of the chair capable of being adjusted in a lifting mode has the working principle that:
1) the original extension amount of the tension spring 45 is changed by rotating the force adjusting component 60;
assume that the force adjustment assembly 60 is in the initial gear and is in gear 1. The gear is adjusted to 2 by rotating the adjusting rotating handle 61, at this time, the adjusting shaft 62 drives the multi-gear cam 63 to rotate, the abutting surface corresponding to 2 gears abuts against the abutting transverse plate 53, and the abutting transverse plate 53 is lifted. The horizontal resisting plate 53 is lifted, so that the vertical resisting plate 52 rotates around the second rotating shaft 51, the limiting groove moves towards the direction far away from the rotating connecting piece 20, and the tension spring 45 is stretched. At this time, if the rotary joint 20 needs to be pressed down and adjusted to the same angle, the 2-shift state is more laborious than the 1-shift state. Likewise, gear 6 is more strenuous than gear 5, while gear 1 is less strenuous than gear 6.
The position of the limiting groove relative to the supporting bottom case 12 is changed only when the gear position of the force adjusting assembly 60 is changed, and is not changed along with the rotation of the rotating link 20. Alternatively, the movement of the pivotal connection 20 and the movement of the force adjustment assembly 60 are two independent movements; they are simply because there is a tension spring 45 attached, changing the original extension of the tension spring 45.
2) Changing the original extension of the tension spring 45 by rotating the tilt gear adjustment assembly 80;
it is assumed that the gearshift pin 82 is inserted into the uppermost shift position hole a. The crank shaft 71 is pulled out by pulling the handle 72 on the crank shaft 71 laterally, so that the crank shaft 71 moves away from the supporting bottom case 12, and the torsion spring 84 drives the shift pin 82 to disengage from the shift hole a, at which time the shift plate 81 can move relative to the shift pin 82. Rotating the rotary link 20 so that the next gear hole a faces the shift pin 82, pushing the crankshaft 71 in the opposite direction of pulling out, the support bottom case 12 is pushed in, the shift pin 82 is driven by the torsion spring 84, and the next gear hole a is inserted, completing the shifting of the tilt gear adjusting assembly 80, thereby adjusting the original extension amount of the tension spring 45, and also changing the original tilt angle of the rotary link 20.
3) The working principle of the cylinder adjusting assembly 70 is consistent with that of a conventional cylinder type lifting seat.
4) The working principle of the whole seat chassis device with automatic return force;
after the setting of the force adjusting assembly 60 and the tilt gear adjusting assembly 80 is completed, the extension spring 45 reaches a predetermined original extension amount, the extension spring 45 is extended by adjusting the rotation of the rotary link 20, and the restoring force is also increased as the amount of the extension is increased. Since the leg support plate is mounted on the pivotal connection member 20, it is pressed and bent by the weight of the leg while being maintained in a state in which the tension spring 45 is continuously stretched. When the leg is removed, the pivotal connection 20, absent a force, returns to its original position by the return force of the tension spring 45.
When the rotary connector 20 rotates relative to the first rotary shaft 31, one end of the protective upper cover 11 moves laterally along with the rotary connector 20, and thus, when the rotary connector 20 rotates, the protective upper cover 11 and the support base 12 also move laterally relative to each other. The relative movement direction of the protective upper cover 11 and the supporting bottom shell 12 is not horizontal and transverse, but is arc direction. Thus, as the leg support plate rotates, the seat cushion also moves relative to the base, but the magnitude of this movement is limited.
The utility model provides a chair of liftable regulation, not only the structure is firm, both can adjust the dynamics moreover, also can adjust inclination, can also adjust the seat height. The whole structure has high strength and reliable and stable connection.
The chair capable of being adjusted in a lifting mode is suitable for a seat, a deck chair and the like.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.
Claims (10)
1. A seat chassis device with automatic return force is characterized in that: the device comprises a supporting bottom shell, a protective upper cover, a first rotating shaft, a rotating connecting piece, a return force assembly and a resisting assembly;
the two ends of the first rotating shaft are respectively fixed on the supporting bottom shell, the bottom of the rotating connecting piece is rotatably connected to the first rotating shaft, and the resisting component is assembled on the supporting bottom shell;
the rotary connecting piece and the resisting component are respectively arranged at two ends of the supporting bottom shell;
one end of the return force component is connected with the rotating connecting piece, and the other end of the return force component is connected with the resisting component;
the protective upper cover is buckled on the supporting bottom shell.
2. A seat pan apparatus with automatic return force according to claim 1, wherein: the force return assembly comprises a first connecting shaft, a force return driving kit and a second connecting shaft, two ends of the first connecting shaft are respectively installed on the rotating connecting piece, one side of the resisting assembly, back to the rotating connecting piece, is provided with a limiting groove, and the second connecting shaft is tightly installed in the limiting groove;
one end of the return force driving external member is rotatably sleeved on the first connecting shaft, and the other end of the return force driving external member is rotatably sleeved on the second connecting shaft.
3. A seat pan apparatus with automatic return force according to claim 2, characterized in that: the return force driving external member comprises a first connecting column, a second connecting column and a tension spring, one end of the first connecting column is movably sleeved on the first connecting shaft in a penetrating manner, and one end of the second connecting column is movably sleeved on the second connecting shaft in a penetrating manner; two ends of the tension spring are respectively fixed at the other end of the first connecting column and at the other end of the second connecting column;
and a plurality of groups of return force driving external members are respectively arranged between the first connecting shaft and the second connecting shaft.
4. A seat pan device with automatic return force as claimed in claim 3, wherein: the rotary connecting piece comprises a mounting plate, a first side plate and a second side plate;
the first side plate and the second side plate are respectively L-shaped;
one end of the first side plate and one end of the second side plate are respectively and rotatably connected to the first rotating shaft,
the mounting plate is fixed at the other end of the first side plate and the other end of the second side plate;
and two ends of the first connecting shaft are respectively fixed in the middle of the first side plate and the middle of the second side plate.
5. The seat pan apparatus with automatic return force according to claim 4, wherein: the device also comprises a force adjusting assembly, wherein the force adjusting assembly is arranged on the supporting bottom shell;
the force adjusting component comprises an adjusting rotating handle, a multi-gear cam and an adjusting shaft; the adjusting rotating handle is arranged at one end of the adjusting shaft, and the multi-gear cam is sleeved in the middle of the adjusting shaft; the adjusting shaft penetrates through the supporting bottom shell, the adjusting rotating handle is arranged outside the supporting bottom shell, and the multi-gear cam is arranged in the supporting bottom shell;
the retaining assembly comprises a second rotating shaft, a retaining vertical plate and a retaining transverse plate, and two ends of the second rotating shaft are respectively and rotatably connected to the supporting bottom shell;
the vertical retaining plate is of a triangular or trapezoidal structure, one side of the bottom of the vertical retaining plate is fixed on the second rotating shaft, the transverse retaining plate is fixed on the other side of the bottom of the vertical retaining plate, and the limiting groove is formed in one side of the top of the vertical retaining plate;
the plurality of retaining vertical plates are arranged in parallel and are respectively fixedly connected with the retaining transverse plates;
the multi-gear cam is abutted with the retaining transverse plate.
6. A seat pan device with automatic return force according to claim 4 or 5, characterized in that: the cylinder adjusting assembly comprises a crankshaft, a handle and an adjusting sheet;
one end of the crankshaft is sleeved on the supporting bottom shell in a penetrating mode and is fixedly connected with the adjusting sheet, and the handle is installed at the other end of the crankshaft;
the handle is arranged outside the supporting bottom shell, and the adjusting sheet is arranged in the supporting bottom shell.
7. The seat pan apparatus with automatic return force according to claim 6, wherein: the device also comprises an inclined gear adjusting assembly;
the inclined gear adjusting assembly comprises a shifting baffle, a shifting pin, a fixed bent plate, a torsion spring and a shifting block;
the baffle plate is provided with a plurality of gear holes, and the middle part of the baffle plate is tightly sleeved on the first connecting shaft;
the cross section of the fixed curved plate is C-shaped, the bottom end of the fixed curved plate is fixed on the supporting bottom shell, aligning holes are respectively formed in two sides of the bottom end of the fixed curved plate, and the shifting pin is movably sleeved in the two aligning holes;
one end of the torsion spring is fixed on the gear shifting pin, and the other end of the torsion spring is fixed on the gear shifting block;
the shift block is fixedly arranged on the crankshaft;
the gear hole is arranged corresponding to the gear shifting pin.
8. The seat pan apparatus with automatic return force according to claim 7, wherein: the inclined gear adjusting assembly further comprises a limiting hook, a limiting cavity is formed in the supporting bottom shell, one end of the limiting hook is fixed to the bottom of the shifting block, and the limiting hook is placed in the limiting cavity in a limiting mode.
9. A seat pan device with automatic return force as claimed in claim 8, wherein: the first protective cover, the second protective cover, the third connecting shaft, the fourth connecting shaft and the fifth connecting shaft are further included;
the first protective cover pockets the rotating connecting piece, and two ends of the first protective cover are respectively rotatably connected with the third connecting shaft; the first protective cover is movably arranged relative to the supporting bottom shell and the protective upper cover;
two ends of the third connecting shaft are respectively fixed on the protective upper cover, and one end of the third connecting shaft penetrates through the protective upper cover, the first protective cover, the rotating connecting piece and the baffle plate at one time;
two ends of the fourth connecting shaft are respectively fixed on the protective upper cover, two ends of the fifth connecting shaft are respectively fixed on the supporting bottom shell, the third connecting shaft and the fourth connecting shaft are respectively positioned on two sides of the protective upper cover, and the fifth connecting shaft is positioned below the fourth connecting shaft;
the second protective cover is respectively connected with the fourth connecting shaft and the fifth connecting shaft in a rotating mode.
10. The utility model provides a chair that liftable was adjusted which characterized in that: comprises a cushion, a lifting cylinder, a base, a leg supporting plate and the seat chassis device with the automatic return force of any one of claims 1 to 9; the seat chassis device with the automatic return force is arranged between the seat cushion and the lifting cylinder;
a plurality of connecting lugs are formed on the top surface of the protective upper cover;
the cushion is fixedly connected with the protective upper cover through the connecting lugs;
the end part of a piston rod of the lifting cylinder penetrates into the supporting bottom shell;
the base is arranged at the other end of the lifting cylinder; a fixed sleeve is formed on the outer side of the lifting cylinder, and the bottom end of the fixed sleeve is fixed on the base;
the leg support plate is mounted on the rotational connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123444132.8U CN216627982U (en) | 2021-12-27 | 2021-12-27 | Seat chassis device with automatic force returning function and chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123444132.8U CN216627982U (en) | 2021-12-27 | 2021-12-27 | Seat chassis device with automatic force returning function and chair |
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| Publication Number | Publication Date |
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| CN216627982U true CN216627982U (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123444132.8U Active CN216627982U (en) | 2021-12-27 | 2021-12-27 | Seat chassis device with automatic force returning function and chair |
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| Country | Link |
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| CN (1) | CN216627982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024067881A1 (en) * | 2022-09-29 | 2024-04-04 | 恒林家居股份有限公司 | Chair and adjustable chassis thereof |
-
2021
- 2021-12-27 CN CN202123444132.8U patent/CN216627982U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024067881A1 (en) * | 2022-09-29 | 2024-04-04 | 恒林家居股份有限公司 | Chair and adjustable chassis thereof |
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