CN109090874B - Elastic connection mechanism of swivel chair backrest and supporting mechanism thereof - Google Patents
Elastic connection mechanism of swivel chair backrest and supporting mechanism thereof Download PDFInfo
- Publication number
- CN109090874B CN109090874B CN201811130691.1A CN201811130691A CN109090874B CN 109090874 B CN109090874 B CN 109090874B CN 201811130691 A CN201811130691 A CN 201811130691A CN 109090874 B CN109090874 B CN 109090874B
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- elastic
- piece
- swivel chair
- positioning notch
- backrest
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 4
- 230000006837 decompression Effects 0.000 claims description 4
- 230000013011 mating Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/18—Chairs or stools with rotatable seat
-
- 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
Abstract
The elastic connecting mechanism of the swivel chair backrest comprises a columnar connecting piece made of rubber materials, a lower positioning notch is formed in the upper end of a backrest support column and close to one side of a human body, an upper positioning notch is formed in the corner of a triangular piece, the lower end of the columnar connecting piece is inserted into the lower positioning notch, a lower fixed connecting structure is arranged between the columnar connecting piece and the lower positioning notch, the upper end of the columnar connecting piece is inserted into the upper positioning notch, an upper fixed connecting structure is arranged between the columnar connecting piece and the upper positioning notch, a positioning groove body axially arranged along the columnar connecting piece is formed in one surface of the columnar connecting piece close to the human body, and an elastic block is clamped in the positioning groove body, the upper end of the elastic block is clamped in the upper positioning notch and fixed on the triangular piece through an upper locking piece penetrating through the columnar connecting piece, and the lower end of the elastic block is clamped in the lower positioning notch and fixed at the upper end of the backrest support column through a lower locking piece penetrating through the columnar connecting piece.
Description
Technical Field
The invention belongs to the technical field of chairs, and particularly relates to an elastic connecting mechanism of a swivel chair backrest and a supporting mechanism of the elastic connecting mechanism.
Background
Chairs are a common living article in life.
The chair comprises a bracket and a cushion fixed on the bracket, and a backrest is arranged on the bracket.
Many existing backrests have two types of fixed type and lifting type, and the lifting type backrests are adjusted in a lifting mode through screws and the like and then locked.
However, the existing backrest cannot swing left and right, and a section of the backrest, which is close to the neck, cannot be independently inclined backwards, so that the use of the backrest is limited.
Disclosure of Invention
The invention aims to solve the problems and provide an elastic connecting mechanism of a swivel chair backrest and a supporting mechanism thereof, which have stronger practicability.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the elastic connecting mechanism of the swivel chair backrest comprises a columnar connecting piece made of rubber materials, a lower positioning notch is formed in the upper end of a backrest support column and close to one side of a human body, an upper positioning notch is formed in the corner of a triangular piece, the lower end of the columnar connecting piece is inserted into the lower positioning notch, a lower fixed connecting structure is arranged between the columnar connecting piece and the lower positioning notch, the upper end of the columnar connecting piece is inserted into the upper positioning notch, an upper fixed connecting structure is arranged between the columnar connecting piece and the upper positioning notch, a positioning groove body axially arranged along the columnar connecting piece is formed in one surface of the columnar connecting piece close to the human body, and an elastic block is clamped in the positioning groove body, the upper end of the elastic block is clamped in the upper positioning notch and fixed on the triangular piece through an upper locking piece penetrating through the columnar connecting piece, and the lower end of the elastic block is clamped in the lower positioning notch and fixed at the upper end of the backrest support column through a lower locking piece penetrating through the columnar connecting piece.
And the columnar connecting piece can realize left-right swing and backward deformation.
In the elastic connecting mechanism of the swivel chair backrest, the bottom of the lower end of the positioning groove body is provided with a lower inclined surface which is obliquely and backwards arranged downwards, and the lower end of the elastic block is provided with a lower inclined matching surface which is matched with the lower inclined surface.
The structure can further improve the elastic rebound performance of the joint and further enhance the structural strength.
In the elastic connecting mechanism of the swivel chair backrest, the upper end of the positioning groove body is provided with an upper inclined surface which is obliquely arranged forwards and upwards, and the upper end of the elastic block is provided with an upper inclined matching surface which is matched with the upper inclined surface.
The structure can further improve the elastic rebound performance of the joint and further enhance the structural strength.
In the elastic connecting mechanism of the swivel chair backrest, one end of the elastic block inserted into the lower positioning notch is provided with a lower limit step; one end of the elastic block inserted into the upper positioning notch is provided with an upper limit step.
The structure can avoid excessive deep assembly.
In the elastic connecting mechanism of the swivel chair backrest, the outer wall of the rear side of the middle part of the elastic block is provided with a plurality of U-shaped decompression grooves which are arranged at intervals up and down.
The structure can form self-protection.
In the elastic connecting mechanism of the swivel chair backrest, the upper fixing connecting structure comprises at least one upper positioning cylinder arranged in the upper positioning notch, and upper fixing holes for the upper positioning cylinders to be inserted one by one are formed in the rear side of the upper end of the elastic block.
The upper locking piece passes through the upper centering locating cylinder.
In the elastic connecting mechanism of the swivel chair backrest, the lower fixing connecting structure comprises at least one lower locating cylinder arranged in the lower locating notch, and lower fixing holes for the lower locating cylinders to be inserted one by one are formed in the rear side of the lower end of the elastic block.
The lower locking piece passes through the lower centering positioning cylinder.
The supporting mechanism of the swivel chair backrest frame made of the elastic connection mechanism comprises a rectangular backrest frame, wherein the top side of the back of the rectangular backrest frame is connected with a supporting frame through a triangular piece, the supporting frame comprises a fixed seat frame and a fixed column connected to the rear side of the fixed seat frame, the swivel chair backrest frame further comprises a backrest support column, the lower end of the backrest support column is provided with a matching hole, the fixed column is inserted into the matching hole, the wall of the matching hole is provided with a plurality of adjusting holes axially spaced along the matching hole, one end of the fixed column, inserted into the matching hole, is provided with a U-shaped elastic locking piece in a penetrating mode, one end of the U-shaped elastic locking piece is inserted into any adjusting hole, an adjusting guide mechanism is arranged between one end of the fixed column, inserted into the matching hole, and the upper end of the backrest support column is connected with the triangular piece through the elastic connection mechanism.
The U-shaped elastic locking piece is made of a metal bar in a bending mode.
The design mating holes and the fixed columns can form axial guiding, and stability of lifting adjustment can be improved.
When the lifting adjustment is needed, one end of the U-shaped elastic locking piece, which is inserted into the adjusting hole under the adjustment of external force, is separated from the adjusting hole, and when the lifting adjustment is lifted to the set position, the external force is released, the corresponding end of the U-shaped elastic locking piece is forced to be inserted into the adjusting hole, so that the height adjustment of the backrest is achieved.
The designed adjusting guide mechanism can further improve the smoothness and stability of lifting adjustment.
The elastic connecting mechanism can realize independent backward inclination near the neck position, so that the use function is further enriched and the practicability is improved.
In the elastic connection mechanism of the swivel chair backrest, the adjusting guide mechanism comprises a guide sliding block which is positioned in the adjusting hole and is vertically and slidably connected with the fixing column, at least one waist-shaped hole is formed in the fixing column, and at least one guide pin which penetrates through the waist-shaped hole and is connected with the backrest support column is fixed on the guide sliding block.
Through the guide pin along waist type hole removal, it can improve lift removal's ride comfort and stability, simultaneously, still further improved holistic structural strength.
Alternatively, the adjusting and guiding mechanism comprises a guide rail and a sliding block structure which are connected with each other in a sliding way.
In the elastic connecting mechanism of the swivel chair backrest, the back of the fixing column is provided with the strip-shaped groove, the guide sliding block is positioned in the strip-shaped groove, two sides of the guide sliding block are in sliding connection with the groove wall of the strip-shaped groove, and the middle part of the U-shaped elastic locking piece is abutted against one surface of the guide sliding block, which is far away from the groove bottom of the strip-shaped groove.
The design of the strip-shaped groove can enlarge the contact area with the guide sliding block and further improve the smoothness and stability of sliding.
The U-shaped elastic locking piece can force the guide sliding block to move towards one side of a human body.
In the elastic connecting mechanism of the swivel chair backrest, the guide sliding block comprises a rear plate and a sliding plate connected to the front surface of the rear plate, the sliding plate is provided with a first elastic structure contacted with the bottom of the strip-shaped groove, the sliding plate is provided with a second elastic structure contacted with the wall of the strip-shaped groove, and the middle part of the U-shaped elastic locking piece is attached to the rear surface of the rear plate.
The elastic structure I is designed, and can ensure that the U-shaped elastic locking piece is always contacted with the guide sliding block.
And the elastic structure II can provide elastic buffering and rebound after the backrest is twisted left and right.
In the elastic connection mechanism of the swivel chair backrest, the elastic structure one comprises cantilever spring plates arranged at the upper end and the lower end of the sliding plate, a protruding part is arranged on one surface of the suspension end of each cantilever spring plate, which is close to the strip-shaped groove, and the protruding part is in contact with the bottom of the strip-shaped groove. The two cantilever spring plates are symmetrically arranged.
The cantilever spring can ensure the elastic performance of the upper end and the lower end.
In the elastic connection mechanism of the swivel chair backrest, the upper end and the lower end of the rear plate are respectively provided with the yielding notches which are in one-to-one correspondence with the cantilever type elastic sheets.
The designed yielding notch can ensure yielding after the cantilever spring plate is elastically deformed.
In the elastic connection mechanism of the swivel chair backrest, the elastic structure II comprises convex strips arranged on two sides of the sliding plate, and cantilever elastic parts are respectively arranged at two ends of each convex strip and are in contact with the bottoms of the strip-shaped grooves. The back plate is positioned between the two convex strips.
The raised strips not only improve the structural strength, but also can improve the stability of fixing the rear plate.
In the elastic connecting mechanism of the swivel chair backrest, two waist-shaped holes are parallel to each other, two abdicating grooves are formed in one side, close to a human body, of the sliding plate, four groove bottoms of the four abdicating grooves are in contact with the groove bottoms of the strip-shaped grooves, and the abdicating grooves correspond to the waist-shaped holes one by one.
The structure can ensure the stability and smoothness of lifting adjustment.
In the elastic connecting mechanism of the swivel chair backrest, the matching hole is a rectangular hole, and one end of the fixing column inserted into the matching hole is rectangular in transverse section and matched with the rectangular hole.
The structure can improve the stability of lifting adjustment and avoid the mutual circumferential rotation.
In the elastic connection mechanism of the swivel chair backrest, the backrest support column comprises a body with a positioning concave groove at the rear side and a cover plate for sealing the notch of the positioning concave groove, wherein the matching hole is formed between the body and the cover plate.
The structure is convenient to disassemble and assemble.
The periphery of the cover plate is provided with a plurality of buckles, and the groove wall of the positioning concave groove is provided with a plurality of bayonets for the buckles to be clamped in one by one.
The elastic block is made of metal plates or nonmetal plates.
Compared with the prior art, the elastic connecting mechanism of the swivel chair backrest has the advantages that:
1. when the lifting adjustment is needed, one end of the U-shaped elastic locking piece, which is inserted into the adjusting hole under the adjustment of external force, is separated from the adjusting hole, and when the lifting adjustment is lifted to the set position, the external force is released, the corresponding end of the U-shaped elastic locking piece is forced to be inserted into the adjusting hole, so that the height adjustment of the backrest is achieved.
2. The designed adjusting guide mechanism can further improve the smoothness and stability of lifting adjustment.
3. The design mating holes and the fixed columns can form axial guiding, and stability of lifting adjustment can be improved.
4. Simple structure and convenient processing and manufacturing.
5. The elastic connecting mechanism can realize independent backward inclination near the neck position, so that the use function is further enriched and the practicability is improved.
Drawings
Fig. 1 is a schematic view of a swivel chair according to the present invention.
Fig. 2 is a schematic sectional view of a swivel chair according to the present invention.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
Fig. 4 is a schematic structural view provided by the present invention.
Fig. 5 is a schematic view of the partial explosion configuration of fig. 4.
Fig. 6 is a schematic diagram of an explosion structure of a guide slide block provided by the invention.
Fig. 7 is an enlarged schematic view of the structure at B in fig. 2.
Fig. 8 is an exploded view of the elastic connection mechanism according to the present invention.
In the figure, a fixing seat frame a1, a fixing column a2, a waist-shaped hole a21, a strip-shaped groove a22, a backrest support column a3, a matching hole a31, an adjusting hole a32, a body a33, a positioning concave groove a331, a cover plate a34, a U-shaped elastic locking piece a4, a guide sliding block a5, a guide pin a51, a rear plate a52, a yielding gap a521, a sliding plate a53, a cantilever spring piece a54, a protruding part a55, a protruding strip a56, a cantilever elastic part a57, a lower positioning gap a35, a lower positioning cylinder a36, a rectangular backrest frame a6, a triangular piece a7, an upper positioning gap a71, an upper positioning cylinder a72, an elastic connecting mechanism a8, a columnar connecting piece a81, a positioning groove a82, a lower inclined surface a821, an upper inclined surface a822, an elastic block a83, a lower inclined anastomosis surface a832, a U-shaped decompression groove a833, an upper locking piece a85, an upper fixing hole a86 and a lower fixing hole a87.
Detailed Description
The following are specific embodiments of the invention and the technical solutions of the invention will be further described with reference to the accompanying drawings, but the invention is not limited to these embodiments.
As shown in fig. 1-2, the elastic connection mechanism of the swivel chair backrest comprises a columnar connection piece a81 made of rubber materials, a lower positioning notch a35 arranged at the upper end of a backrest support column a3 and close to one side of a human body, an upper positioning notch a71 arranged at the corner of a triangle piece a7, a lower fixed connection structure arranged between the columnar connection piece a81 and the lower positioning notch a35, an upper fixed connection structure arranged between the columnar connection piece a81 and the upper positioning notch a71, a positioning groove a82 arranged along the axial direction of the columnar connection piece a81 and clamped in the positioning groove a82 arranged at one side of the columnar connection piece a81 close to the human body, and an elastic block a83 clamped in the positioning groove a82, wherein the elastic block a83 is made of metal plates.
The upper end of the elastic block a83 is clamped in the upper positioning notch a71 and is fixed on the triangular piece a7 through an upper locking piece a84 penetrating through the columnar connecting piece a81, and the lower end of the elastic block a83 is clamped in the lower positioning notch a35 and is fixed at the upper end of the backrest support column a3 through a lower locking piece a85 penetrating through the columnar connecting piece a 81.
The bottom of the lower end of the positioning groove body a82 is provided with a lower inclined surface a821 which is obliquely and backwards arranged downwards, and the lower end of the elastic block a83 is provided with a lower inclined matching surface a831 which is matched with the lower inclined surface a 821.
The upper end of the positioning groove body a82 is provided with an upper inclined surface a822 which is obliquely arranged forwards and upwards, and the upper end of the elastic block a83 is provided with an upper inclined matching surface a832 which is matched with the upper inclined surface a 822.
The lower inclined surface a821 and the upper inclined surface a822 are parallel to each other.
One end of the elastic block a83 inserted into the lower positioning notch is provided with a lower limit step; an upper limit step is arranged at one end of the elastic block a83 inserted into the upper locating notch.
The outer wall of the rear side of the middle part of the elastic block a83 is provided with a plurality of U-shaped decompression grooves a833 which are arranged at intervals up and down.
The upper fixing and connecting structure comprises at least one upper positioning cylinder a72 arranged in the upper positioning notch, and upper fixing holes a86 for the upper positioning cylinders to be inserted one by one are formed in the rear side of the upper end of the elastic block a 83.
The lower fixing and connecting structure comprises at least one lower positioning cylinder a36 arranged in the lower positioning notch, and lower fixing holes a87 for the lower positioning cylinders to be inserted one by one are formed in the rear side of the lower end of the elastic block a 83.
As shown in figures 1-8 of the drawings,
the support mechanism of the swivel chair backrest frame manufactured by the elastic connection mechanism comprises a rectangular backrest frame a6, wherein the support frame is connected to the top side of the back of the rectangular backrest frame a6 through a triangular piece a7, and a neck support frame is further connected to the triangular piece a 7.
The support frame include fixing base frame a1 and connect the fixed column a2 on fixing base frame a1 rear side, the transverse cross-section of fixed column a2 is the rectangle.
As shown in figures 1-4 of the drawings,
the back support column a3 is further included, a matching hole a31 is formed at the lower end of the back support column a3, and a fixing column a2 is inserted into the matching hole a31, specifically, the back support column a3 of the embodiment includes a body a33 with a positioning recess a331 at the rear side, and a cover plate a34 closing the notch of the positioning recess a331, and the matching hole a31 is formed between the body a33 and the cover plate a 34.
The hole wall of the matching hole a31 is provided with a plurality of adjusting holes a32 which are axially arranged at intervals along the matching hole a31, one end of the fixing column a2 inserted into the matching hole a31 is penetrated with a U-shaped elastic locking piece a4, one end of the U-shaped elastic locking piece a4 is inserted into any adjusting hole a32, and an adjusting guide mechanism is arranged between one end of the fixing column a2 inserted into the matching hole a31 and the backrest support column a 3.
Specifically, the adjusting and guiding mechanism of the present embodiment includes a guiding slider a5 located in the adjusting hole a32 and vertically slidably connected to the fixing column a2, at least one waist-shaped hole a21 is provided on the fixing column a2, and at least one guiding pin a51 penetrating through the waist-shaped hole a21 and connected to the backrest support column a3 is fixed on the guiding slider a 5. In the optimized scheme, the two waist-shaped holes a21 are parallel to each other,
and the guide pins a51 are also provided with two guide pins and are inserted into the waist-shaped holes a21 one by one.
As shown in figures 1-6 of the drawings,
the back of the fixed column a2 is provided with a strip-shaped groove a22, the guide sliding block a5 is positioned in the strip-shaped groove a22, two sides of the guide sliding block a5 are in sliding connection with the groove wall of the strip-shaped groove a22, and the middle part of the U-shaped elastic locking piece a4 is abutted against one surface, far away from the groove bottom of the strip-shaped groove a22, of the guide sliding block a 5.
That is, two locking piece inserting holes are formed between the two waist-shaped holes a21 in the fixing column a2, the locking piece inserting hole located below is a blind hole, the locking piece inserting hole located above is a through hole, the lower end of the U-shaped elastic locking piece a4 is inserted into the blind hole, and the upper end of the U-shaped elastic locking piece a4 penetrates through the through hole and extends into any one of the adjusting holes a 32.
When the height needs to be adjusted, the U-shaped elastic locking piece a4 is forced to deform by external force so as to separate from the original adjusting hole a32, when the backrest support column a3 moves to a required position relative to the fixed column a2, the external force is released, and the U-shaped elastic locking piece a4 is reset and inserted into the corresponding adjusting hole a 32.
When the backrest support column a3 is lifted, the guide slide block a5 is lifted synchronously, so that the smoothness and stability of lifting movement are ensured.
Specifically, the guide slider a5 of the present embodiment includes a rear plate a52 and a slide plate a53 attached to the front surface of the rear plate a52, and two connecting pins are provided between the rear plate a52 and the slide plate a 53.
The sliding plate a53 is provided with a first elastic structure contacting with the bottom of the strip-shaped groove a22, specifically, the first elastic structure in this embodiment includes cantilever spring plates a54 disposed at the upper and lower ends of the sliding plate a53, a protruding portion a55 is disposed at one side of the suspended end of each cantilever spring plate a54, which is close to the strip-shaped groove a22, and the protruding portion a55 contacts with the bottom of the strip-shaped groove a 22. The two cantilever spring plates a54 are symmetrically arranged.
Next, the upper and lower ends of the rear plate a52 are respectively provided with yielding notches a521 corresponding to the cantilever spring pieces a54 one by one.
The sliding plate a53 is provided with a second elastic structure contacted with the groove wall of the strip-shaped groove a22, and the middle part of the U-shaped elastic locking piece a4 is abutted against the rear surface of the rear plate a 52. Specifically, the second elastic structure of the present embodiment includes protruding strips a56 disposed on two sides of the sliding plate a53, and cantilever elastic portions a57 are disposed at two ends of each protruding strip a56, where the cantilever elastic portions a57 contact with the bottoms of the strip-shaped grooves a 22. The rear plate a52 is located between two convex strips a 56.
In addition, two abdicating grooves are formed on one surface of the sliding plate a53 close to a human body, four grooves are formed on one surface of the sliding plate a53, which is provided with the abdicating grooves, and the abdicating grooves are in contact with the bottoms of the strip-shaped grooves a22, and are in one-to-one correspondence with the waist-shaped holes a 21.
The yielding groove reduces the contact area so as to improve the smoothness of the relative movement.
In addition, the mating hole a31 of the present embodiment is a rectangular hole, and a transverse cross section of one end of the fixing post a2 inserted into the mating hole a31 is rectangular and the rectangular holes are matched.
As shown in figures 1-2 and 7-8,
the upper end of the backrest support column a3 is connected with the triangular piece a7 through an elastic connection mechanism a 8.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The elastic connection mechanism of the swivel chair backrest is characterized in that the swivel chair backrest comprises a backrest support column (a 3), a triangular piece (a 7) and a rectangular backrest frame (a 6), the upper end of the backrest support column (a 3) is connected with the triangular piece (a 7) through the elastic connection mechanism (a 8), the top side of the back of the rectangular backrest frame (a 6) is connected with a support frame through the triangular piece (a 7), the triangular piece (a 7) is also connected with a neck support frame, the swivel chair backrest is characterized in that the elastic connection mechanism (a 8) comprises a columnar connection piece (a 81) made of rubber materials, a lower positioning notch (a 35) which is arranged at the upper end of the backrest support column (a 3) and is close to one side of a human body, an upper positioning notch (a 71) is arranged at the corner of the triangular piece (a 7), a lower end of the columnar connection piece (a 81) is inserted into the lower positioning notch (a 35) and is provided with a lower fixed connection structure between the columnar connection piece (a 81) and the lower positioning notch (a 35), the upper end of the columnar connection piece (a 81) is inserted into the upper positioning notch (a 71) and is provided with a fixed notch (a) between the columnar connection piece (a 81) and the positioning notch (a 82) along the axial direction of the columnar connection piece (a) and the positioning notch (a 82) is arranged in the axial direction of the positioning notch (a 82), the upper end of the elastic block (a 83) is clamped in the upper positioning notch (a 71) and is fixed on the triangular piece (a 7) through an upper locking piece (a 84) penetrating through the columnar connecting piece (a 81), and the lower end of the elastic block (a 83) is clamped in the lower positioning notch (a 35) and is fixed at the upper end of the backrest support column (a 3) through a lower locking piece (a 85) penetrating through the columnar connecting piece (a 81).
2. The elastic connection mechanism of the swivel chair backrest according to claim 1, wherein the lower end of the positioning groove (a 82) is provided with a lower inclined surface (a 821) which is arranged obliquely backwards and downwards, and the lower end of the elastic block (a 83) is provided with a lower inclined matching surface (a 831) which is matched with the lower inclined surface (a 821).
3. The elastic connection mechanism of swivel chair backrest according to claim 2, wherein the upper end of the positioning groove (a 82) is provided with an upper inclined surface (a 822) which is arranged obliquely forward and upward, and the upper end of the elastic block (a 83) is provided with an upper inclined fitting surface (a 832) which is fitted with the upper inclined surface (a 822).
4. The elastic connection mechanism of the swivel chair backrest according to claim 1, wherein one end of the elastic block (a 83) inserted into the lower positioning notch is provided with a lower limit step; an upper limit step is arranged at one end of the elastic block (a 83) inserted into the upper locating notch.
5. The elastic connection mechanism of a swivel chair backrest according to claim 1, wherein the outer wall of the rear side of the middle part of the elastic block (a 83) is provided with a plurality of U-shaped decompression grooves (a 833) which are arranged at intervals up and down.
6. The elastic connection mechanism of a swivel chair backrest according to claim 1, wherein the upper fixing connection structure comprises at least one upper positioning cylinder (a 72) arranged in the upper positioning notch, and upper fixing holes (a 86) for the upper positioning cylinders to be inserted one by one are arranged at the rear side of the upper end of the elastic block (a 83).
7. The elastic connection mechanism of a swivel chair backrest according to claim 1, wherein the lower fixing connection structure comprises at least one lower positioning cylinder (a 36) arranged in the lower positioning notch, and lower fixing holes (a 87) for the lower positioning cylinders to be inserted one by one are arranged at the rear side of the lower end of the elastic block (a 83).
8. A mechanism for elastically interconnecting a swivel chair backrest as claimed in claim 3, wherein the lower inclined surface (a 821) and the upper inclined surface (a 822) are parallel to each other.
9. A support mechanism for a swivel chair back frame made of a resilient connecting mechanism for a swivel chair back according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130691.1A CN109090874B (en) | 2018-09-27 | 2018-09-27 | Elastic connection mechanism of swivel chair backrest and supporting mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130691.1A CN109090874B (en) | 2018-09-27 | 2018-09-27 | Elastic connection mechanism of swivel chair backrest and supporting mechanism thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109090874A CN109090874A (en) | 2018-12-28 |
| CN109090874B true CN109090874B (en) | 2024-01-12 |
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| CN201811130691.1A Active CN109090874B (en) | 2018-09-27 | 2018-09-27 | Elastic connection mechanism of swivel chair backrest and supporting mechanism thereof |
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| CN108968466A (en) * | 2018-09-27 | 2018-12-11 | 浙江粤强家具科技有限公司 | Swivel chair |
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| CN107048788A (en) * | 2011-10-04 | 2017-08-18 | 佛姆维家具有限公司 | Seat and support member |
| CN209252113U (en) * | 2018-09-27 | 2019-08-16 | 浙江粤强家具科技有限公司 | The flexible connection mechanism and its supporting mechanism of backrest of rotary chair |
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| CN107048788A (en) * | 2011-10-04 | 2017-08-18 | 佛姆维家具有限公司 | Seat and support member |
| CN202536765U (en) * | 2012-03-17 | 2012-11-21 | 吴耀全 | Back leaning and rebounding locking structure of elastic chair |
| CN209252113U (en) * | 2018-09-27 | 2019-08-16 | 浙江粤强家具科技有限公司 | The flexible connection mechanism and its supporting mechanism of backrest of rotary chair |
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