CN219835402U - Waist rest adjusting structure of office chair - Google Patents
Waist rest adjusting structure of office chair Download PDFInfo
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- CN219835402U CN219835402U CN202320952521.1U CN202320952521U CN219835402U CN 219835402 U CN219835402 U CN 219835402U CN 202320952521 U CN202320952521 U CN 202320952521U CN 219835402 U CN219835402 U CN 219835402U
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- office chair
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- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The waist rest adjusting structure of the office chair comprises a chair back frame, a waist rest part and a screw rod adjusting part, wherein a fixed seat is arranged on the chair back frame, a lifting sliding groove is arranged at the front end of the fixed seat, and a lifting sliding seat capable of moving in a lifting manner is arranged in the lifting sliding groove; the front end of the lifting sliding seat is provided with a front-back moving groove, and the rear end of the lifting sliding seat is provided with an adjusting through hole communicated with the front-back moving groove; the back of the waist support part is provided with a front sliding seat and a back sliding seat which are matched in the front-back moving groove in a front-back moving way, the rear ends of the front sliding seat and the back sliding seat are provided with adjusting screw holes, and the adjusting screw rod section of the screw rod adjusting part is in threaded fit in the adjusting screw holes; the back of the fixed seat is provided with a lifting long hole communicated with the lifting chute, and the adjusting driving section of the screw adjusting piece sequentially passes through the adjusting through hole and the lifting long hole and then is fixedly provided with an adjusting knob. The utility model realizes the adjustment of the height position of the lumbar support, effectively improves the convenience of the user for adjusting the height position of the lumbar support, and is convenient for the user to freely adjust the use height of the lumbar support.
Description
Technical Field
The utility model relates to the technical field of office chairs, in particular to an office chair waist rest adjusting structure.
Background
Office chairs are various chairs equipped for convenience in daily work and social activities, and narrow office chairs are backrest chairs on which a person sits when performing a desk work in a sitting posture, and broad office chairs are all chairs used in offices. In order to improve the comfort of a user sitting on the office chair, the existing office chair can be provided with the waist rest with adjustable positions on the chair back, and when the user uses the office chair, the height position and the front and back positions of the waist rest can be adjusted, so that the waist rest can be better matched with the waist position of a human body, and the aim of improving the comfort of the user using the office chair is fulfilled.
A lumbar mechanism for office chairs and office chairs disclosed in chinese patent publication No. CN217488092U, for example, comprises a lumbar member, a longitudinal adjustment assembly, and a lateral movement assembly; the longitudinal adjusting assembly comprises a fixing part and an adjusting part, the fixing part is fixedly connected to the back wall surface of the waist support part, one end part of the adjusting part is movably arranged on the fixing part, and the waist support part is moved up and down to enable the fixing part to longitudinally slide relative to the adjusting part; the transverse moving assembly comprises an operating piece for controlling the lumbar support part and the longitudinal adjusting assembly to transversely move, and the operating piece is movably connected with the adjusting part.
However, when the height position of the lumbar support is adjusted, the lumbar support needs to be pulled to enable the fixing component to longitudinally slide up and down relative to the adjusting component, so as to adjust the height position of the lumbar support.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides an office chair waist rest adjusting structure.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides an office chair waist leans on adjusting structure, includes back of the chair frame, waist rest part, screw rod adjusting part, be equipped with fixing base, its characterized in that on the back of the chair frame: the front end of the fixed seat is provided with a lifting sliding chute, a lifting sliding seat capable of lifting is arranged in the lifting sliding chute, a plurality of height gears are arranged in the lifting sliding chute from top to bottom, and a gear locking structure capable of being clamped into one of the height gears is arranged on the lifting sliding seat;
the front end of the lifting sliding seat is provided with a front-back moving groove, and the rear end of the lifting sliding seat is provided with an adjusting through hole communicated with the front-back moving groove;
the back of the waist support part is provided with a front sliding seat and a back sliding seat which are matched in the front-back moving groove in a front-back moving way, the rear ends of the front sliding seat and the back sliding seat are provided with adjusting screw holes, and the adjusting screw rod section of the screw rod adjusting part is in threaded fit in the adjusting screw holes;
the back of the fixed seat is provided with a lifting long hole communicated with the lifting chute, and the adjusting driving section of the screw adjusting piece sequentially passes through the adjusting through hole and the lifting long hole and then is fixedly provided with an adjusting knob.
In the utility model, each high gear is composed of two gear clamping grooves respectively arranged on the left and right groove walls of the lifting sliding groove, the gear locking structure is composed of two locking convex parts respectively arranged on the left and right sides of the lifting sliding seat, and the two locking convex parts of the gear locking structure are respectively clamped into the two gear clamping grooves of the same high gear.
In the utility model, the back of the fixed seat is provided with the lifting guide groove, the length direction of the lifting guide groove is parallel to the length direction of the lifting long hole, the adjusting knob comprises a knob main body and a guide cylinder connected to the knob main body, and one end of the guide cylinder is in sliding guide fit in the lifting guide groove.
In the utility model, the adjusting knob is provided with the driving matching hole, the adjusting driving section is provided with the driving matching section fixed in the driving matching hole, and the cross sections of the driving matching hole and the driving matching section are polygonal.
In the utility model, a plurality of anti-slip grooves are arranged on the peripheral surface of the adjusting knob.
In the utility model, at least one protruding contact structure is arranged on the back of the lifting slide seat and is used for being in sliding contact connection with the rear groove wall of the lifting slide groove, and each protruding contact structure consists of two elastic contact protruding parts protruding from the back of the lifting slide seat.
In the utility model, the back of the waist support component is provided with the waist support bracket, and the front and rear sliding seats are integrally arranged at the rear end of the waist support bracket.
In the utility model, at least one guiding plane for preventing the front sliding seat from rotating is arranged on the outer surface of the front sliding seat and the rear sliding seat, and the guiding plane is in sliding fit with the groove wall of the front and rear moving groove.
In the utility model, a plurality of supporting convex strips are arranged on the groove wall of the front and back moving groove, and the supporting convex strips can be movably contacted with the outer surfaces of the front and back sliding seat.
In the utility model, one end of the adjusting screw section, which is far away from the control limiting block, is provided with a matched limiting piece.
The utility model has the beneficial effects that: according to the utility model, the lifting sliding seat capable of moving up and down is arranged on the fixing seat of the chair back, and then the front and back moving groove of the lifting sliding seat is matched with the front and back sliding seat of the lumbar support part, so that when a user pulls the adjusting knob upwards or presses the adjusting knob downwards, the lumbar support part can be linked to move upwards or downwards, thereby realizing the adjustment of the height position of the lumbar support part, effectively improving the convenience of the user in adjusting the height position of the lumbar support part, and being convenient for the user to freely adjust the use height of the lumbar support part.
Drawings
The utility model is further described below with reference to the drawings and embodiments:
FIG. 1 is a perspective view of example 1;
FIG. 2 is an exploded view of example 1;
FIG. 3 is a second exploded view of example 1;
FIG. 4 is a schematic view illustrating the installation of the front and rear carriages in embodiment 1;
FIG. 5 is a cross-sectional view of example 1;
fig. 6 is a rear view of the lumbar support and the seatback of embodiment 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Example 1
Referring to fig. 1-6, an office chair lumbar support adjusting structure comprises a chair back frame 1, a lumbar support part 2 and a screw rod adjusting part 3, wherein a fixed seat 11 is arranged on the chair back frame 1, a lifting sliding chute 12 is arranged at the front end of the fixed seat 11, a lifting sliding seat 4 capable of lifting is arranged in the lifting sliding chute 12, a plurality of height gears are arranged in the lifting sliding chute 12 from top to bottom, and a gear locking structure capable of being clamped into the height gears to lock the height of the lumbar support part 2 is arranged on the lifting sliding seat 4;
further, the front end of the lifting sliding seat 4 is provided with a front-back moving groove 41, and the rear end is provided with an adjusting through hole 42 communicated with the front-back moving groove 41; the back of the waist rest part 2 is provided with a front and back sliding seat 21 which is matched in the front and back moving groove 41 in a front and back moving way, and the rear end of the front and back sliding seat 21 is provided with an adjusting screw hole 211; the screw adjusting piece 3 comprises a control limiting block 31, an adjusting screw section 32 arranged at one end of the control limiting block 31 and an adjusting driving section 33 arranged at the other end of the control limiting block 31, the control limiting block 31 is positioned in the front-back moving groove 41, and the adjusting screw section 32 of the screw adjusting piece 3 is in threaded fit in the adjusting screw hole 211;
still further, be equipped with the lift slot hole 13 of intercommunication lift spout 12 on the fixing base 11 the back, lift slot hole 13 is the oblong hole that length direction from top to bottom extended, the regulation drive section 33 of screw rod regulating part 3 passes through adjustment through-hole 42, lift slot hole 13 back fixed mounting has adjust knob 5 in proper order.
As a preferred embodiment, each of the height gears is composed of two gear clamping grooves 120 respectively arranged on the left and right groove walls of the lifting sliding groove 12, the gear locking structure is composed of two locking convex parts 40 respectively arranged on the left and right sides of the lifting sliding seat 4, and the two locking convex parts 40 of the gear locking structure are respectively clamped into the two gear clamping grooves 120 of the same height gear, so that the height position of the lumbar support part 2 is locked.
As a preferred embodiment, the back of the fixing seat 11 is provided with a lifting guide groove 14, the length direction of the lifting guide groove 14 is parallel to the length direction of the lifting long hole 13, the adjusting knob 5 comprises a knob main body 51 and a guide cylinder 52 connected to the knob main body 51, one end of the guide cylinder 52 is slidably and guided and matched in the lifting guide groove 14, and through the sliding fit between the guide cylinder 52 and the lifting guide groove 14, the offset of the adjusting knob 5 to the left and right sides can be reduced when a user pulls the adjusting knob 5 upwards or presses the adjusting knob 5 downwards, so that the up-down movement stability of the adjusting knob 5 is improved.
As a preferred embodiment, the adjusting knob 5 is provided with a driving matching hole, the adjusting driving section 33 is provided with a driving matching section 331 fixed in the driving matching hole, the driving matching section 331 is fixedly connected with the adjusting knob 5 by using a driving bolt 10, and the cross-sectional shapes of the driving matching hole and the driving matching section 331 are polygonal, so that the adjusting knob 5 and the screw adjusting piece 3 can synchronously rotate. Further, the driving matching hole is formed on the guiding cylinder 52, a connecting through hole is formed on the knob main body 51, a connecting screw hole corresponding to the connecting through hole is formed on the driving matching section 331, and one end of the driving bolt 10 is screwed into the connecting screw hole after passing through the connecting through hole.
In addition, the knob main part 51 is kept away from the one end of screw rod regulating part 3 still is equipped with the decoration recess, be equipped with protective cover 6 in the decoration recess, protective cover 6 is used for covering drive bolt 10 and reduces drive bolt 10 rusty probability, also avoids drive bolt 10 to expose simultaneously and influences office chair's pleasing to the eye.
As a preferred embodiment, the outer peripheral surface of the adjusting knob 5 is provided with a plurality of anti-slip grooves 53, specifically, a plurality of anti-slip grooves 53 are arranged at intervals along the outer peripheral surface of the knob body 51, and the anti-slip grooves 53 are used for preventing slipping, so that a user can conveniently rotate or pull the adjusting knob 5, and adjust the position of the lumbar support member 2.
As a preferred embodiment, at least one protruding contact structure is disposed on the back of the lifting slide 4, and the protruding contact structure is used for being in sliding contact with the rear groove wall of the lifting slide groove 12, so that the lifting slide 4 and the rear groove wall of the lifting slide groove 12 are prevented from generating larger friction, the smoothness of lifting of the lifting slide 4 can be improved, and the lifting movement of the lumbar support member 2 can be conveniently operated by a user. In the present embodiment, each of the bump contact structures is composed of two elastic contact protrusions 43 provided in a bump on the back surface of the elevating carriage 4, and the two elastic contact protrusions 43 of each of the bump contact structures are arranged side by side. In addition, in other embodiments, when there are a plurality of bump contact structures, the plurality of bump contact structures are arranged from top to bottom.
In a preferred embodiment, the lumbar support bracket 20 is disposed on the back surface of the lumbar support member 2, the front and rear sliding seats 21 are integrally formed on the rear end of the lumbar support bracket 20, and the lumbar support bracket 20 is connected to the back surface of the lumbar support member 2 by a first bolt. Further, the back of the lumbar support member 2 is provided with a fitting protrusion 22, the lumbar support bracket 20 is provided with a fitting groove which is in concave-convex fit with the fitting protrusion 22, the bottom of the lumbar support bracket 20 is provided with a lumbar support fitting hole 201 which is correspondingly communicated with the fitting groove, the fitting protrusion 22 is provided with a lumbar support connecting hole 221 which is correspondingly communicated with the lumbar support fitting hole 201, and the screw section of the first bolt passes through the lumbar support fitting hole 201 to be in threaded fit in the lumbar support connecting hole 221.
As a preferred embodiment, since the adjusting screw section 32 pushes the front and rear sliding seat 21 through rotation, the adjusting screw section 32 may drive the front and rear sliding seat 21 to rotate simultaneously by a rotating force for driving the front and rear sliding seat 21 to move, so that at least one guiding plane 210 for preventing the front and rear sliding seat 21 from rotating is arranged on the outer surface of the front and rear sliding seat 21 in order to prevent the front and rear sliding seat 21 from rotating synchronously, and the guiding plane 210 is in sliding fit with the groove wall of the front and rear moving groove 41; the groove wall of the fore-and-aft moving groove 41 is provided with a plurality of supporting ribs 411, and the supporting ribs 411 can be in movable contact with the outer surface of the fore-and-aft sliding seat 21.
As a preferred embodiment, one end of the adjusting screw section 32 far away from the control limiting block 31 is provided with a matching limiting piece 7, the matching limiting piece 7 is installed on the adjusting screw section 32 by adopting a second bolt 8, and the matching limiting piece 7 is used for matching with the front sliding seat 21 to limit the maximum forward moving position of the lumbar support part 2. Further, a limit slot 212 for moving the matching limit piece 7 is provided at the front end of the front and rear slide 21, the limit slot 212 is communicated with the adjusting screw hole 211, when the matching limit piece 7 is matched with the rear slot wall of the limit slot 212, the front and rear slide 21 moves forward to the maximum forward displacement position, and the lumbar support member 2 is also adjusted to the most forward position.
The foregoing is only a preferred embodiment of the present utility model, and all technical solutions for achieving the object of the present utility model by substantially the same means are included in the scope of the present utility model.
Claims (10)
1. The utility model provides an office chair waist leans on adjusting structure, includes back of the chair frame (1), waist lean on part (2), screw rod regulating part (3), be equipped with fixing base (11), its characterized in that on back of the chair frame (1): the front end of the fixed seat (11) is provided with a lifting sliding chute (12), a lifting sliding seat (4) capable of lifting is arranged in the lifting sliding chute (12), a plurality of height gears are arranged in the lifting sliding chute (12) from top to bottom, and a gear locking structure capable of being clamped into one of the height gears is arranged on the lifting sliding seat (4);
the front end of the lifting sliding seat (4) is provided with a front-back moving groove (41), and the rear end of the lifting sliding seat is provided with an adjusting through hole (42) communicated with the front-back moving groove (41);
the back of the waist support component (2) is provided with a front sliding seat (21) which is matched in a front-back moving groove (41) in a front-back moving way, the rear end of the front sliding seat (21) is provided with an adjusting screw hole (211), and an adjusting screw rod section (32) of the screw rod adjusting component (3) is in threaded fit in the adjusting screw hole (211);
the back of the fixed seat (11) is provided with a lifting long hole (13) communicated with the lifting chute (12), and an adjusting driving section (33) of the screw adjusting piece (3) sequentially passes through the adjusting through hole (42) and the lifting long hole (13) and then is fixedly provided with an adjusting knob (5).
2. An office chair lumbar adjustment structure according to claim 1, wherein: each high gear consists of two gear clamping grooves (120) which are respectively arranged on the left and right groove walls of the lifting sliding groove (12), the gear locking structure consists of two locking convex parts (40) which are respectively arranged on the left and right sides of the lifting sliding seat (4), and the two locking convex parts (40) of the gear locking structure are respectively clamped into the two gear clamping grooves (120) of the same high gear.
3. An office chair lumbar adjustment structure according to claim 1, wherein: the back of fixing base (11) is equipped with lift guide slot (14), the length direction of lift guide slot (14) is parallel with the length direction of lift slot hole (13), adjust knob (5) include knob main part (51) and connect direction cylinder (52) on knob main part (51), the one end slip direction of direction cylinder (52) is cooperateed in lift guide slot (14).
4. An office chair lumbar adjustment structure according to claim 1, wherein: the adjusting knob (5) is provided with a driving matching hole, the adjusting driving section (33) is provided with a driving matching section (331) fixed in the driving matching hole, and the cross section of the driving matching hole and the cross section of the driving matching section (331) are polygonal.
5. An office chair lumbar adjustment structure according to claim 1, wherein: the outer peripheral surface of the adjusting knob (5) is provided with a plurality of anti-slip grooves (53).
6. An office chair lumbar adjustment structure according to claim 1, wherein: the back of the lifting sliding seat (4) is provided with at least one protruding contact structure, the protruding contact structure is used for being connected with the rear groove wall of the lifting sliding groove (12) in a sliding contact mode, and each protruding contact structure is composed of two elastic contact protruding parts (43) protruding from the back of the lifting sliding seat (4).
7. An office chair lumbar adjustment structure according to claim 1, wherein: the back of the waist support component (2) is provided with a waist support bracket (20), and the front and rear sliding seat (21) is integrally formed on the rear end of the waist support bracket (20).
8. An office chair lumbar adjustment structure according to claim 1, wherein: at least one guide plane (210) for preventing the front and rear sliding seat (21) from rotating is arranged on the outer surface of the front and rear sliding seat (21), and the guide plane (210) is in sliding fit with the groove wall of the front and rear moving groove (41).
9. An office chair lumbar adjustment structure according to claim 1, wherein: a plurality of supporting convex strips (411) are arranged on the groove wall of the front-back moving groove (41), and the supporting convex strips (411) can be in movable contact with the outer surface of the front-back sliding seat (21).
10. An office chair lumbar adjustment structure according to claim 1, wherein: one end of the adjusting screw section (32) far away from the control limiting block (31) is provided with a matching limiting piece (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320952521.1U CN219835402U (en) | 2023-04-24 | 2023-04-24 | Waist rest adjusting structure of office chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320952521.1U CN219835402U (en) | 2023-04-24 | 2023-04-24 | Waist rest adjusting structure of office chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219835402U true CN219835402U (en) | 2023-10-17 |
Family
ID=88299217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320952521.1U Active CN219835402U (en) | 2023-04-24 | 2023-04-24 | Waist rest adjusting structure of office chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219835402U (en) |
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2023
- 2023-04-24 CN CN202320952521.1U patent/CN219835402U/en active Active
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