CN108056613B - Waist support seat - Google Patents
Waist support seat Download PDFInfo
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- CN108056613B CN108056613B CN201711381616.8A CN201711381616A CN108056613B CN 108056613 B CN108056613 B CN 108056613B CN 201711381616 A CN201711381616 A CN 201711381616A CN 108056613 B CN108056613 B CN 108056613B
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- Prior art keywords
- gas spring
- waist
- waist support
- arm
- main shaft
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/467—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by fluid means
Abstract
The invention relates to the field of seat design and manufacture, in particular to a waist support seat. The invention is realized by the following technical scheme: a waist support seat comprises a waist support and an air spring, wherein the waist support is tightly attached to the waist and back of a human body when the waist and back move through the extension and retraction of the air spring so as to provide continuous and uniform support force. The invention aims to overcome the defects of the prior art and provides a waist support seat. When the user moves back and forth on the seat, the waist support can cling to the waist and the back of a human body to move synchronously, the waist is attached to the waist in real time, and the supporting force for the waist of the human body is increased.
Description
Technical Field
The invention relates to the field of seat design and manufacture, in particular to a waist support seat.
Background
The chair is a piece of furniture with wide application in daily life and work, generally comprises a base, a backrest, a supporting structure, armrests and other parts, and in order to meet personalized requirements of people and bring more comfortable and healthy use experience, the structure and the function of the chair are continuously improved. When a user uses the seat, the user usually supports the buttocks and the back by the base and the backrest, the support of the waist is relatively weak, the muscle and the vertebra of the waist and the back of the human body bear the pressure of the weight of the upper part of the human body, and in the long term, lumbar muscle strain and vertebra pathological changes can occur, so that inconvenience in study, life and work is brought to people.
In recent years, in order to provide a supporting force to the waist, a seat with a waist support is on the market, and the waist support is connected to a base or a backrest to provide a good supporting force to the waist of a user, so that the user can keep a sitting posture upright and has a good protection function to the lumbar. However, the existing lumbar support seat has the defect that the lumbar support is not tightly attached to the human body, namely, when the sitting posture of a user is adjusted, such as forward leaning, the lumbar support cannot be adjusted in a telescopic mode along with the movement of the human body, the lumbar support cannot be attached to the human body to support the waist continuously, and the using effect of the lumbar support is not ideal.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a waist support seat. When the user moves back and forth on the seat, the waist support can cling to the waist and the back of a human body to move synchronously, the waist is attached to the waist in real time, and the supporting force for the waist of the human body is increased.
The technical purpose of the invention is realized by the following technical scheme:
a waist support seat comprises a waist support and an air spring, wherein the waist support is tightly attached to the waist and back of a human body when the waist and back move through the extension and retraction of the air spring so as to provide continuous and uniform support force.
In the technical scheme, the most important part is the movable waist support, when the sitting posture of a human body changes, for example, the human body leans forwards, the waist support can also move forwards and is close to the waist and back of the human body and tightly attached to the waist and back of the human body, and the supporting force to the human body is increased. And the forward and backward power of the waist support comes from the telescopic operation of the gas spring. In this technical scheme, power component does not use other drive methods but has injectd the air spring because the driving force of air spring lasts and even, can make the waist holds in the palm and can have an even and lasting promotion or holding power to the human body, and the comfort is stronger. Other driving components or elastic components, such as elastic columns and springs, are subject to hooke's law, and the supporting force provided by the driving components or elastic components is directly related to the deformation of the driving components or elastic components, and thus, the driving components or elastic components cannot provide continuous and uniform force during the movement process. In this technical solution, the structure, shape, connection relationship, etc. of the seat cushion, the armrest, and the chair leg are not specifically limited.
Preferably, the present invention includes a rotating shaft assembly and a transmission member, wherein the rotating shaft assembly includes a main shaft, the waist support rotates around the main shaft, and the rotation is achieved by the expansion and contraction of the gas spring through the transmission of the transmission member.
In this document, the extending direction of the gas spring, i.e., the direction close to the waist of the human body, is defined as the front-rear direction, and the retracting direction of the gas spring, i.e., the direction away from the waist of the human body, is defined as the rear direction.
The motion trail of the gas spring is a linear motion trail in the front-back direction, the motion trail of the waist support is an arc-shaped trail which rotates by taking the main shaft as an axis, and the transmission part is used for connecting the gas spring and the waist support and changing the linear motion trail of the gas spring into the arc-shaped rotation motion trail of the waist support. In addition, the installation orientation of the gas spring, namely the tail part is forward or the head part is forward, is not particularly limited in the technical scheme.
Preferably, one end of the gas spring is connected with the transmission part, the transmission part is connected with the main shaft, and the main shaft is connected with the waist support and drives the waist support to rotate.
In one embodiment, the transmission component is directly connected to the main shaft, and correspondingly, the waist support is also directly connected to the main shaft. In this embodiment, the main shaft is rotated and directly drives the lumbar support to rotate.
Preferably, one end of the gas spring is connected with the transmission part, the transmission part is connected with a rotary connecting piece, the rotary connecting piece is sleeved on the main shaft, and the rotary connecting piece is connected with the waist support and drives the waist support to swing.
As another embodiment, the spindle is only used as a guide and position limitation and does not participate in the rotation itself. The rotating connecting piece is sleeved on the main shaft, serves as a transmission medium and is connected with the waist support and the transmission part. The transmission part drives the rotary connecting piece to rotate, so that the waist support is directly driven to swing, and the main shaft does not rotate.
Preferably, the transmission member includes a connecting arm connected to one end of the gas spring, a connecting rack connected to the connecting arm, and a swinging tooth connected to the rotary shaft assembly and engaged with the connecting rack.
Preferably, the gas spring is mounted below the seat cushion, the connecting arm is slidably connected below the seat cushion, a long groove is formed in the connecting arm, the extending direction of the long groove is parallel to the extending and retracting direction of the gas spring, and the gas spring further comprises a pin which is connected with the seat cushion and movably embedded in the long groove.
The gas spring may be directly installed under the seat cushion or indirectly installed under the seat cushion through a connection member such as a bottom plate, which is not limited in this embodiment. The transmission is realized through a gear rack, specifically, the gas spring extends to drive the connecting arm to advance, the tail end of the connecting arm is connected with the connecting rack to drive the connecting rack to advance, and the swinging teeth naturally rotate under the driving of the advancing connecting rack to drive the waist support to swing.
As mentioned above, the swinging teeth can swing the waist support in a direct connection mode or an indirect connection mode. In the technical scheme of direct connection, the swing teeth are directly connected with the main shaft, the waist support is also directly connected with the main shaft, and the main shaft participates in rotation. In the technical scheme of indirect connection, the swing tooth and the waist support are connected to the rotating connecting piece, and the main shaft does not participate in rotation.
The slotted direction of the long groove is also the front-back direction, the pin can be directly connected with the seat cushion and can be connected with a fixing piece such as a bottom plate, and the matching of the pin and the long groove can also increase the advancing guidance and stability of the connecting arm when the connecting arm is pushed by the gas spring.
When the gas spring contracts backwards, the principle of driving the waist support to swing is consistent with the principle, and the details are not repeated here.
Preferably, the transmission component comprises a connecting piece connected with the gas spring, a roller connected to the connecting piece, a drawn wire positioned in a wheel groove of the roller, and a rotating arm connected with the rotating shaft assembly, and the drawn wire is connected with the rotating arm.
Preferably, the rotating arm is provided with a wire drawing head bayonet, and the wire drawing is connected with the wire drawing head bayonet.
The matching of the wire drawing and the roller is another specific implementation form of the transmission component. Specifically, the gas spring advances to push the connecting piece to advance, the connecting piece is connected with a roller, the wire drawing is arranged on the roller, so that the wire drawing advances forwards, and the rotating arm is pulled to rotate by the wire drawing.
As above, the connection rotation of the rotation arm to the waist support can have a direct connection mode and an indirect connection mode, and the details are not repeated here.
Preferably, the transmission component includes a connecting arm connected to the gas spring, a rotating arm connected to the rotating shaft assembly, and a connecting rod, and two ends of the connecting rod are respectively hinged to the connecting arm and the rotating arm.
Preferably, the gas spring is mounted below the seat cushion, the connecting arm is slidably connected below the seat cushion, a long groove is formed in the connecting arm, the extending direction of the long groove is parallel to the extending and retracting direction of the gas spring, and the gas spring further comprises a pin which is connected with the seat cushion and movably embedded in the long groove.
The rotating arm and the connecting rod are further concrete implementation forms of the transmission component. Specifically, the air spring stretches out to drive the connecting arm to advance, the connecting arm is hinged to the connecting rod, the other end of the connecting rod is hinged to the rotating arm, when the connecting arm advances, the rotating arm is driven by the connecting rod to rotate, and the rotating arm rotates by taking the main shaft as an axis.
As above, the connection rotation of the rotation arm to the waist support can have a direct connection mode and an indirect connection mode, and the details are not repeated here.
Preferably, the transmission member includes a connecting arm connected to the gas spring, a sprocket connected to the connecting arm, a sprocket connecting member connected to the rotating shaft assembly, and a chain, the chain is engaged with the sprocket, and the chain is engaged with the sprocket connecting member.
In another embodiment of the transmission member, a gear chain is used, and specifically, a connecting arm is connected to the gas spring, a chain wheel is connected to the connecting arm, and the chain is engaged with the chain wheel. When the gas spring extends out, the chain is pulled forwards, and the other end of the chain is meshed with the chain wheel connecting piece to drive the chain wheel connecting piece to rotate around the main shaft. In this way, the technical scheme that the chain is matched with the chain wheel can be replaced by the common matching scheme of the synchronous belt and the synchronous wheel, and the principle is the same.
Preferably, the waist support comprises a swing arm, a supporting plate movably connected with the swing arm, and an angle adjusting piece for adjusting the preset angle of the supporting plate.
Preferably, the angle adjusting member is a torsion spring.
The swing arm can be directly or indirectly connected with the transmission part, the swing arm participates in swinging, the supporting plate is connected onto the swing arm, the supporting plate is movably connected with the swing arm, namely the angle of the supporting plate relative to the swing arm can be adjusted, and therefore the supporting plate can be attached to the waist and back of a human body more flexibly and more snugly.
The layer board with the swing arm junction is equipped with the torsional spring, the effect of torsional spring has two aspects. Firstly, when the human body leans forwards or backwards, the torsion spring can provide a proper torsion force for the supporting plate to enable the angle adjustment of the supporting plate to be more flexible; secondly, when the human body leaves the seat, the torsional spring can be with the angle automatic adjustment of layer board is preset the angle, for example just to the place ahead not slope, increases aesthetic property and regularity.
Preferably, the waist support is provided with a functional block.
Preferably, the functional block is a magnetic therapy block, an electric heating block or a massage block.
Preferably, the functional block is detachably mounted on the waist support.
The key point of the technical scheme is that the waist support can be tightly attached to the waist and the back of a human body in real time, so that the waist support not only has the comfort of support, but also has the tightness of healthy magnetic therapy. Manufacturers can add different functional blocks according to actual commercial requirements, such as magnetic therapy, electric heating, massage and the like, and can also produce a plurality of functional blocks in a uniform connection installation mode for users to select, replace and install.
Preferably, the gas spring locking device further comprises a switch assembly for switching the adjustment state and the locking state of the gas spring.
The change-over switch assembly is used for changing over the state of the gas spring. When the gas spring is in an adjusting state, the gas rod of the gas spring can freely extend and retract, and in the adjusting state, the human body leans backwards, the gas rod retracts, and the waist support swings backwards; the human body leans forward, the air rod extends out, and the waist support swings forward. When the gas spring is in a locking state, the extending length of the gas rod is locked, and the waist support is fixed and does not swing back and forth any more.
Preferably, the number of the rotating shaft assemblies is two, the two rotating shaft assemblies are positioned on two sides of the seat cushion, and the two waist supports are respectively and independently connected to the rotating shaft assemblies.
Preferably, the rotating shaft assembly is one and is located on one side of the seat cushion, and the waist support is one and is connected to the rotating shaft assembly.
The chair comprises a chair foot assembly, a seat cushion, an armrest assembly and a backrest, wherein a rocker arm is arranged at the upper part of a sleeve of the armrest assembly, and a rotating pin is arranged at the front end part of the rocker arm and is movably connected with the rear part of the backrest; the lower part of seatpad is fixing the bottom plate, the lower part of bottom plate and the upper portion fixed connection of chair foot subassembly, the fixed control frame in rear portion in the bottom plate is connected with the front portion of air spring, the afterbody of air spring is equipped with the one end that the connecting pin is being connected the linking arm, the other end of linking arm is equipped with in the swing inslot of swing round pin embedding sleeve pipe lower part movably.
Preferably, the backrest is of a two-piece structure.
Preferably, the backrest is of one-piece construction.
Preferably, the inner cavity of the sleeve is provided with a spacer sleeve, the inner cavity of the spacer sleeve is provided with a main shaft, the lower part of the main shaft is provided with a connecting plate fixedly connected with a bottom plate, and the upper part of the main shaft is provided with a handrail.
Preferably, a pin is arranged in the bottom plate, a long groove is formed in the connecting arm at a position corresponding to the pin, and the pin is movably embedded in the long groove.
Preferably, a ratchet rack with ratchet teeth is arranged on one side of the bottom plate, a rotating shaft of the ratchet rack is movably connected with a ratchet handle, the ratchet handle is provided with a pawl pin which is movably connected with a pawl, the pawl corresponds to the ratchet teeth, and the tail end of a pull cable is hooked on the front portion of the ratchet handle.
Preferably, the pawl handle of the pawl extends out of the through hole of the ratchet handle.
Preferably, the lower part of the pull rod movably arranged on the control frame is hooked with the front end of the inhaul cable, and the upper middle part of the pull rod corresponds to a valve of the gas spring.
The seat cushion, the armrest assembly and the backrest are preferably included, a rocker arm is arranged at the upper part of a sleeve of the armrest assembly, and the rocker arm is connected with the backrest; the lower part of the seat cushion is provided with a bottom plate, the bottom plate is connected with a control frame connected with the air spring, the air spring is connected with a connecting arm, and a swing pin is arranged on the connecting arm and movably embedded into a swing groove at the lower part of the sleeve.
Preferably, the backrest is of a two-piece structure.
Preferably, the backrest is of one-piece construction.
Preferably, the inner cavity of the sleeve is provided with a spacer sleeve, the inner cavity of the spacer sleeve is provided with a main shaft, the lower part of the main shaft is provided with a connecting plate fixedly connected with a bottom plate, and the upper part of the main shaft is provided with a handrail.
Preferably, a pin is arranged in the bottom plate, a long groove is formed in the connecting arm at a position corresponding to the pin, and the pin is movably embedded in the long groove.
Preferably, a ratchet rack with ratchet teeth is arranged on one side of the bottom plate, a rotating shaft of the ratchet rack is movably connected with a ratchet handle, the ratchet handle is provided with a pawl pin which is movably connected with a pawl, the pawl corresponds to the ratchet teeth, and the tail end of a pull cable is hooked on the front portion of the ratchet handle.
Preferably, the pawl handle of the pawl extends out of the through hole of the ratchet handle.
Preferably, the lower part of the pull rod movably arranged on the control frame is hooked with the front end of the inhaul cable, and the upper middle part of the pull rod corresponds to a valve of the gas spring.
In conclusion, the invention has the following beneficial effects:
1. the waist support can rotate, so that the waist support adapts to the sitting posture of a human body and supports the waist in time.
2. The air spring is used as a power component, and can continuously provide uniform and lasting force for the waist support, so that the supporting force of the waist support on a human body is uniform and lasting, and the comfort level is increased.
3. The waist support can adopt an integral design or a two-side separation design.
4. The supporting plate and the swing arm are connected in place through the torsion spring, so that the waist and the back are more attached, after a person leaves the waist support, the supporting plate can keep right against the position and is not inclined, and the attractiveness is improved.
5. The functional components can be installed on the waist support in a user-defined way to realize different functions of magnetic therapy, massage, electric heating and the like.
6. The extension of the gas spring can be locked.
Drawings
FIG. 1 is a front view of the first embodiment;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a front view of the second embodiment;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a top view of FIG. 4;
FIG. 7 is an enlarged view taken at I in FIGS. 1 and 4;
FIG. 8 is an enlarged view taken at II in FIGS. 1 and 4;
FIG. 9 is an enlarged view of III in FIGS. 2 and 5;
FIG. 10 is an enlarged view of the area IV in FIGS. 3 and 6;
FIG. 11 is an enlarged view taken at V in FIG. 3;
FIG. 12 is an enlarged view taken at VI in FIGS. 3 and 6;
FIG. 13 is an enlarged view taken at VII in FIGS. 3 and 6;
FIG. 14 is an enlarged view at VIII in FIGS. 3 and 6;
FIG. 15 is an enlarged view taken at IX of FIG. 6;
FIG. 16 is a plan view of the third embodiment;
FIG. 17 is an enlarged detail view at A in FIG. 16;
FIG. 18 is a plan view of the fourth embodiment;
FIG. 19 is an enlarged detail view at A in FIG. 18;
fig. 20 is a side sectional view at B in fig. 18;
FIG. 21 is a plan view of the fifth embodiment;
FIG. 22 is an enlarged detail view at A in FIG. 21;
FIG. 23 is a top view of the sixth embodiment;
FIG. 24 is an enlarged detail view at A in FIG. 23;
fig. 25 is a side sectional view at B in fig. 23.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Embodiment 1, as shown in fig. 1, fig. 2, fig. 3, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13, fig. 14, a chair whose backrest can move closely to the back of the human body, comprises a chair leg assembly 1, a seat cushion 3, an armrest assembly 4 and a backrest 5, wherein a rocker arm 8 is arranged on the upper part of a sleeve 6 of the armrest assembly 4, and a rotating pin 32 is arranged at the front end part of the rocker arm 8 and movably connected with the rear part of the backrest 5; the bottom plate 13 is fixed on the lower part of the seat cushion 3, the lower part of the bottom plate 13 is fixedly connected with the upper part of the chair leg assembly 1, the control frame 31 fixed on the rear part in the bottom plate 13 is connected with the front part of the air rod 12, the tail part of the air rod 12 is provided with a connecting pin 33 connected with one end of the connecting arm 9, and the other end of the connecting arm 9 is provided with a swinging pin 17 movably embedded in a swinging groove 18 on the lower part of the sleeve 6.
The backrest 5 is a separate two-piece structure.
The lower part of the headrest 7 is connected with the lower part of the seat cushion 3.
The inner cavity of the sleeve 6 is provided with a spacer 15, the inner cavity of the spacer 15 is provided with a main shaft 16, the lower part of the main shaft 16 is provided with a connecting plate 19 fixedly connected with the bottom plate 13, and the upper part of the main shaft 16 is provided with the handrail 2.
A pin 10 is arranged in the bottom plate 13, a long groove 11 is arranged at the corresponding position of the pin 10 of the connecting arm 9, and the pin 10 is movably embedded in the long groove 11.
A ratchet rack 23 with ratchet teeth 24 is arranged on one side of the bottom plate 13, a rotating shaft 22 of the ratchet rack 23 is movably connected with a ratchet handle 26, a pawl pin 35 of the ratchet handle 26 is movably connected with a pawl 25, the pawl 25 corresponds to the ratchet teeth 24, and the front part of the ratchet handle 26 is hooked with the tail end of the inhaul cable 21.
The pawl handle 27 of the pawl 25 passes out of the through hole 28 of the ratchet handle 26.
The lower part of a pull rod 30 movably arranged on the control frame 31 is hooked with the front end of the inhaul cable 21, and the upper middle part of the pull rod 30 corresponds to the valve 29 of the air lever 12.
The exposed portions of the connecting arms 9 and the connecting plates 19 are surrounded by a protective cover 20.
Embodiment 2, as shown in fig. 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, comprises a chair foot assembly 1, a seat cushion 3, an armrest assembly 4 and a backrest 5, wherein a rocker arm 8 is arranged at the upper part of a sleeve 6 of the armrest assembly 4, and a rotating pin 32 is arranged at the front end part of the rocker arm 8 and movably connected with the rear part of the backrest 5; the bottom plate 13 is fixed on the lower part of the seat cushion 3, the lower part of the bottom plate 13 is fixedly connected with the upper part of the chair leg assembly 1, the control frame 31 fixed on the rear part in the bottom plate 13 is connected with the front part of the air rod 12, the tail part of the air rod 12 is provided with a connecting pin 33 connected with one end of the connecting arm 9, and the other end of the connecting arm 9 is provided with a swinging pin 17 movably embedded in a swinging groove 18 on the lower part of the sleeve 6.
The backrest 5 is of one-piece construction.
The rotating pin 32 is embedded in a long backrest slot 34 at the rear part of the backrest 5 and movably connected with the backrest slot;
the lower portion of the headrest 7 is connected to the backrest 5.
The inner cavity of the sleeve 6 is provided with a spacer 15, the inner cavity of the spacer 15 is provided with a main shaft 16, the lower part of the main shaft 16 is provided with a connecting plate 19 fixedly connected with the bottom plate 13, and the upper part of the main shaft 16 is provided with the handrail 2.
A pin 10 is arranged in the bottom plate 13, a long groove 11 is arranged at the corresponding position of the pin 10 of the connecting arm 9, and the pin 10 is movably embedded in the long groove 11.
A ratchet rack 23 with ratchet teeth 24 is arranged on one side of the bottom plate 13, a rotating shaft 22 of the ratchet rack 23 is movably connected with a ratchet handle 26, a pawl pin 35 of the ratchet handle 26 is movably connected with a pawl 25, the pawl 25 corresponds to the ratchet teeth 24, and the front part of the ratchet handle 26 is hooked with the tail end of the inhaul cable 21.
The pawl handle 27 of the pawl 25 passes out of the through hole 28 of the ratchet handle 26.
The lower part of a pull rod 30 movably arranged on the control frame 31 is hooked with the front end of the inhaul cable 21, and the upper middle part of the pull rod 30 corresponds to the valve 29 of the air lever 12.
The exposed portions of the connecting arms 9 and the connecting plates 19 are surrounded by a protective cover 20.
In fig. 8, the state of the pawl 25 and the ratchet handle 26 is the state of rest of the backrest 5, when the backrest 5 is required to move tightly against the waist and back of a human body, the rotating ratchet handle 26 is moved upwards along the rotating shaft 22, the through hole 28 drives the pawl handle 27 to move backwards, so that the pawl 25 moves from the front meshing of the ratchet 24 to the rear meshing of the ratchet 24; simultaneously pulling the pull rope 21, and pulling the pull rod 30 through the pull rope 21 to open the valve 29; the compression spring in the air rod 12 is expanded to extend the air rod 12, and the connecting arm 9 is driven by the connecting pin 33 to move forwards along the long groove 11; meanwhile, the sleeve 6 and the rocker arm 8 are driven to rotate forwards inwards by taking the main shaft 16 as the center through the swinging pin 17 and the swinging groove 18; meanwhile, the rocker arm 8 drives the backrest 5 to move forwards to be tightly attached to the waist and the back of the human body through the rotating pin 32. When the human body leans backwards, the waist and the back of the human body are pressed backwards, the backrest 5 is pushed backwards, and the rocker arm 8 and the sleeve 6 are driven by the backrest 5 through the rotating pin 32 to rotate outwards and backwards by taking the main shaft 16 as a center; meanwhile, the rocker arm 8 drives the connecting arm 9 to move backwards along the long groove 11 through the swinging groove 18 and the swinging pin 17; at the same time the connecting arm 9 compresses the compression spring in the air lever 12 via the connecting pin 33, so that the air lever 12 is shortened. In use, if it is desired that the backrest 5 remain at a certain position throughout the travel, the pawl handle 27 is lifted up and then lowered so that the pawl 25 moves from the rear engagement of the ratchet teeth 24 to the front engagement of the ratchet teeth 24, and the ratchet handle 26 is lowered down the spindle 22 so that the cable 21 and lever 30 are released so that the valve 29 is closed. Of course, the air bar 12 of the chair of the present invention, which can move in close contact with the back and the waist of the human body, can be used, for example: compression springs, extension springs, elastic rubber, etc. The connecting arm 9 is driven to move along the long groove 11 through the connecting pin 33 by using an elastic structure; meanwhile, the sleeve 6 and the rocker arm 8 are driven to rotate by taking the main shaft 16 as the center through the swinging pin 17 and the swinging groove 18; meanwhile, the scheme that the rocker arm 8 drives the backrest 5 to move through the rotating pin 32 belongs to the protection scope of the invention.
The differences between embodiments 3, 4, 5 and 6 and embodiment 1 are mainly the specific structure of the transmission member 40.
In embodiment 3, as shown in fig. 16 and 17, the gas spring 12 may be directly installed below the seat cushion 3, or may be indirectly installed below the seat cushion 3 through a connecting member such as a bottom plate, and the present invention is not limited thereto. The transmission realized by the rack and pinion is an implementation form of the transmission part 40, specifically, the gas spring 12 extends to drive the connecting arm 41 to advance, the end of the connecting arm 41 is connected with the connecting rack 42 to drive the connecting rack 42 to advance, and the swinging teeth 43 naturally rotate under the forward driving of the connecting rack 42 to drive the waist support 5 to swing. The slotted direction of the elongated slot 11 is also the front-back direction, the pin 10 can be directly connected with the seat cushion 3 and can be connected with a fixed part such as a bottom plate, and the matching of the pin 10 and the elongated slot 11 can also increase the guiding performance and stability of the forward movement of the connecting arm 41 when being pushed by the gas spring 12.
In addition, the waist support 5 comprises a swing arm 52, a supporting plate 51 movably connected with the swing arm 52 and a torsion spring for adjusting the preset angle of the supporting plate 51.
The swing arm 52 can be directly or indirectly connected with the transmission part 40, namely the swing tooth 43, the swing arm 52 participates in the swing, the supporting plate 51 is connected on the swing arm 52, the supporting plate 51 is movably connected with the swing arm 52, namely the supporting plate 51 can adjust the angle relative to the swing arm 52, and therefore the supporting plate 51 can be attached to the waist and back of the human body more flexibly and more comfortably.
The connecting part of the supporting plate 51 and the swing arm 52 is provided with a torsion spring, and the action of the torsion spring has two aspects. Firstly, when the human body leans forward or leans backward, the torsion spring can provide the supporting plate 51 with a proper torsion force to enable the angle adjustment of the supporting plate 51 to be more flexible; secondly, when the human body leaves the seat, the torsion spring can automatically adjust the angle of the supporting plate 51 to a preset angle, for example, the supporting plate is not inclined right ahead, so that the appearance and the neatness are improved.
The waist support 5 is provided with a functional block. The functional block is a magnetic therapy block, an electric heating block or a massage block. The functional block is detachably arranged on the waist support 5. The key point of the technical scheme is that the waist support 5 can be tightly attached to the waist and the back of a human body in real time, so that the comfort of support is realized, and the attaching degree of health magnetic therapy is also included. Manufacturers can add different functional blocks according to actual commercial requirements, such as magnetic therapy, electric heating, massage and the like, and can also produce a plurality of functional blocks in a uniform connection installation mode for users to select, replace and install.
A diverter switch assembly is also included for switching the adjustment and locking states of the gas spring 12. The diverter switch assembly is used to switch the state of the gas spring 12. When the gas spring 12 is in the adjusting state, the gas rod of the gas spring 12 can freely extend and retract, and in the state, the human body leans backwards, the gas rod retracts, and the waist support 5 swings backwards; the human body leans forward, the air rod extends out, and the waist support 5 swings forward. When the gas spring 12 is in a locked state, the extension length of the gas rod is locked, and the waist support 5 is also fixed and does not swing back and forth.
Example 4, as shown in fig. 18, 19, 20. Embodiment 4 is different from embodiment 3 in the implementation manner of the transmission member 40, in this embodiment, the transmission member 40 includes a connecting piece 46 connected to the gas spring 12, a roller 44 connected to the connecting piece 46, a wire 45 located in a groove of the roller 44, and a rotating arm 47 connected to the rotating shaft assembly, and the wire 45 is connected to the rotating arm 47. The rotating arm 47 is provided with a wire drawing head bayonet 48, and the wire drawing 45 is connected with the wire drawing head bayonet 48.
The matching of the wire 45 and the roller 44 is another specific realization form of the transmission component 40. Specifically, the gas spring 12 is advanced to urge the web 46 forward, and the web 46 and the roller 44 may be connected by a fastener such as a pin. The connecting piece 46 is connected to the roller 44, and the wire 45 is mounted on the roller 44 so as to have a forward drawing advance action on the wire 45, and the wire 45 pulls the rotating arm 47 to rotate.
Example 5 is shown in fig. 21 and 22. Embodiment 5 is different from embodiment 3 in the specific structure of the transmission member 40, in this embodiment, the transmission member 40 includes a connecting arm 41 connected to the gas spring 12, a rotating arm 47 connected to the rotating shaft assembly, and a connecting rod 49, and both ends of the connecting rod 49 are respectively hinged to the connecting arm 41 and the rotating arm 47. The gas spring 12 is arranged below the seat cushion 3, the connecting arm 41 is connected below the seat cushion 3 in a sliding mode, the connecting arm 41 is provided with a long groove 11, the extending direction of the long groove 11 is parallel to the stretching direction of the gas spring 12, and the gas spring seat further comprises a pin 10 which is connected with the seat cushion 3 and movably embedded into the long groove 11.
The use of the rotating arm 47 and the connecting rod 49 is another embodiment of the transmission member 40. Specifically, the gas spring 12 extends to drive the connecting arm 41 to move forward, the connecting arm 41 is hinged to a connecting rod 49, the other end of the connecting rod 49 is hinged to a rotating arm 47, when the connecting arm 41 moves forward, the rotating arm 47 is driven by the connecting rod 49 to rotate, and the rotating arm 47 rotates by taking the main shaft 16 as an axis.
In another embodiment of the transmission member 40, a gear chain is used, and specifically, a connecting arm 41 is connected to the gas spring 12, a sprocket 412 is connected to the connecting arm 41, and a chain 411 is engaged with the sprocket 412. When the gas spring 12 is extended, the chain 411 is pulled forward, and the other end of the chain 411 engages the sprocket attachment 413, thereby rotating the sprocket attachment 413 about the spindle 16. In this way, the technical scheme that the chain 411 is matched with the chain wheel 412 can be replaced by the common matching scheme of a synchronous belt and a synchronous wheel, and the principle is the same.
Claims (8)
1. A waist support seat is characterized in that: contain waist support (5) and gas spring (12), waist support (5) through the flexible waist back of following the human body that realizes hugging closely when the waist back removes of gas spring (12) is in order to provide and last even support power, this kind of waist support seat still contains pivot subassembly and drive disk assembly (40), the pivot subassembly contains main shaft (16), waist support (5) with main shaft (16) rotate as the axle, the rotation is the flexible process of gas spring (12) transmission and realization of drive disk assembly (40), gas spring (12) one end with drive disk assembly (40) are connected, drive disk assembly (40) with main shaft (16) are connected, main shaft (16) with waist support (5) is connected and is driven waist support (5) are rotated.
2. A lumbar support seat as set forth in claim 1, wherein: the transmission component (40) comprises a connecting arm (41) connected with one end of the gas spring (12), a connecting rack (42) connected on the connecting arm (41), and a swinging tooth (43) connected with the rotating shaft component and meshed with the connecting rack (42).
3. A lumbar support seat as set forth in claim 2, wherein: the gas spring (12) is installed below the seat cushion (3), the connecting arm (41) is connected below the seat cushion (3) in a sliding mode, a long groove (11) is formed in the connecting arm (41), the extending direction of the long groove (11) is parallel to the stretching direction of the gas spring (12), and the gas spring further comprises a pin (10) which is connected with the seat cushion (3) and movably embedded into the long groove (11).
4. A lumbar support seat as set forth in claim 1, wherein: the transmission component (40) comprises a connecting piece (46) connected with the gas spring (12), a roller (44) connected onto the connecting piece (46), a wire drawing (45) positioned in a wheel groove of the roller (44) and a rotating arm (47) connected with the rotating shaft assembly, wherein the wire drawing (45) is connected with the rotating arm (47).
5. A lumbar support seat according to claim 4, wherein: the rotating arm (47) is provided with a wire drawing head bayonet (48), and the wire drawing (45) is connected with the wire drawing head bayonet (48).
6. A lumbar support seat according to claim 5, wherein: the transmission part (40) comprises a connecting arm (41) connected with the gas spring (12), a rotating arm (47) connected with the rotating shaft assembly and a connecting rod (49), and two ends of the connecting rod (49) are respectively hinged to the connecting arm (41) and the rotating arm (47).
7. A lumbar support seat as set forth in claim 6, wherein: the gas spring (12) is installed below the seat cushion (3), the connecting arm (41) is connected below the seat cushion (3) in a sliding mode, a long groove (11) is formed in the connecting arm (41), the extending direction of the long groove (11) is parallel to the stretching direction of the gas spring (12), and the gas spring further comprises a pin (10) which is connected with the seat cushion (3) and movably embedded into the long groove (11).
8. A waist support seat is characterized in that: contain waist support (5) and gas spring (12), waist support (5) is passed through the waist of following the human back of the body is hugged closely in order to provide and lasts even support power when the back of the body removes to the realization of flexible of gas spring (12), and this kind of waist support seat still contains pivot subassembly and drive disk assembly (40), the pivot subassembly contains main shaft (16), waist support (5) with main shaft (16) rotate for the axle, it is to rotate the flexible process of gas spring (12) the transmission of drive disk assembly (40) and realize, gas spring (12) one end with drive disk assembly (40) are connected, drive disk assembly (40) are connected with the rotation connecting piece, the rotation connecting piece cover is established on main shaft (16), the rotation connecting piece with waist support (5) and connect and drive waist support (5) and rotate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017100554985 | 2017-01-19 | ||
| CN201710055498 | 2017-01-19 |
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| Publication Number | Publication Date |
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| CN108056613A CN108056613A (en) | 2018-05-22 |
| CN108056613B true CN108056613B (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711381616.8A Active CN108056613B (en) | 2017-01-19 | 2017-12-20 | Waist support seat |
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| CN (1) | CN108056613B (en) |
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| CN108056613A (en) | 2018-05-22 |
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Effective date of registration: 20200722 Address after: 313000, Zhejiang City, Huzhou province Anji County pass Pu Pu Industrial Park Applicant after: ANJI SHENGXIN OFFICE FURNITURE Co.,Ltd. Address before: 313000 180, Zizhu villa, Anji County, Huzhou, Zhejiang Applicant before: Ou Yaping Applicant before: Wu Qingsong |
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