Mesh chair backrest partition support adjusting structure

Abstract

The utility model discloses a net chair backrest partition support adjusting structure, including support frame, the left side upper end of support frame is equipped with the connecting frame, still includes partition adjusting mechanism, partition adjusting mechanism: it includes fixed base, connecting seat no.

Description

Technical Field

[0001] This utility model relates to the field of seating furniture technology, specifically a mesh chair backrest partition support and adjustment structure. Background Technology

[0002] The mesh backrest of a mesh chair is typically made of terylene or polyester mesh. Some high-end products use a double-layer weaving process to enhance elasticity and support. The mesh chair supports the user's back through the backrest area. (Existing technology: Authorization Publication No. CN 218008936) U's patent discloses a seat back adjustment structure and seat, including a backrest connecting rod, a fixing plate, and a limiting member; the backrest connecting rod is connected to the seat back; the backrest connecting rod is also connected to the fixing plate; a sliding groove is formed on the fixing plate; the limiting member is connected to the seat of the seat; the limiting member slides in cooperation with the sliding groove; the backrest connecting rod moves along the front-back direction of the seat, driving the seat back to move back and forth. This seat back adjustment structure can realize the sliding adjustment of the seat back, which can meet the usage needs of children of different ages, and achieve the purpose of back support, improving sitting posture and improving user comfort. However, when adjusting the seat back, this device can only adjust the position of the backrest as a whole, and cannot realize the zone adjustment of the backrest, which may reduce the user's comfort of using the mesh chair backrest. Therefore, we propose a mesh chair backrest zone support adjustment structure. Summary of the Invention

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a partitioned support and adjustment structure for a mesh chair backrest. This device uses a partitioned approach to adjust the position of the neck, back, and waist areas of the mesh chair backrest according to the user's sitting posture, making the overall mesh chair backrest fit the user's back more closely and improving the user's comfort. At the same time, the device uses elastic elements to utilize reaction force so that each partition of the mesh chair backrest can adaptively fit the user's back. Furthermore, the rotation locking elements of each partition can be synchronously controlled through transmission elements, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a mesh chair backrest partition support adjustment structure, including a support frame, a connecting frame at the upper left side of the support frame, and a partition adjustment mechanism; The zone adjustment mechanism includes a fixed base, a connecting base, a neck support, a backrest, a lumbar support, an adaptive component, a locking component, and a synchronization component. The fixed bases are respectively located at the upper and lower ends of the left wall of the support frame and the upper right end of the connecting frame. The right end of each fixed base is rotatably connected to the connecting base via a pivot. The upper connecting base has a neck support at its right end, the middle connecting base has a backrest at its right end, and the lower connecting base has a lumbar support at its right end. Adaptive components are provided between the neck support and the connecting frame, and between the backrest and the lumbar support and the support frame. The pivot... Each vertically adjacent fixed seat is equipped with a locking component, and a synchronization component is provided between the locking component and the support frame. This device adopts a zoned approach, which can adjust the position of the neck, back, and waist areas of the mesh chair backrest according to the user's sitting posture, so that the overall mesh chair backrest fits the user's back better, improving the user's comfort. At the same time, the device uses elastic elements to utilize reaction force to make each zone of the mesh chair backrest adaptively fit the user's back, and the rotation locking elements of each zone of the device can be synchronously controlled through transmission elements.

[0005] Furthermore, the adaptive component includes a second connecting seat, a second rotating shaft, a hollow shell, a slide, and a third connecting seat. The second connecting seat is respectively located at the upper and lower ends of the left wall of the support frame and the lower right end of the connecting frame. The hollow shell is rotatably connected to the interior of each connecting seat through the second rotating shaft. The slide is slidably connected to the interior of each hollow shell. The right end of each slide is rotatably connected to the third connecting seat through the third rotating shaft. The left arc surface of the neck support, back support frame, and lumbar support frame is fixedly connected to the right end of the horizontally adjacent third connecting seat. Through the sliding connection, auxiliary support is provided for each area of ​​the backrest of the mesh chair.

[0006] Furthermore, the adaptive component also includes a telescopic column and a spring. The telescopic column and the spring are longitudinally and evenly arranged between the left side of the hollow shell and the left side of the adjacent slide. The spring is movably sleeved with the outer end of the adjacent telescopic column to provide reverse contact force for each area of ​​the mesh chair back to self-adhere to the user's back.

[0007] Furthermore, the locking assembly includes a protective shell, a disc, a pin, and a socket. The protective shells are respectively located on the front right end of the fixed base. The front end of the rotating shaft is provided with a disc. The discs are located inside the longitudinally adjacent protective shells. The outer arc surface of the discs is provided with a ring of evenly distributed sockets. The left wall of the protective shell has a circular hole in which a pin is slidably connected. The right end of the pin is inserted into the transversely adjacent socket. The insertion locks the various zones in the mesh chair backrest zone support adjustment structure by means of the insertion.

[0008] Furthermore, the locking assembly also includes a ring and a second spring. The ring is respectively disposed on the left wall of the protective shell and the outer side of the insertion post. A second spring is provided between two horizontally adjacent rings. The second spring is movably sleeved on the outer side of the adjacent insertion post. By utilizing the spring compression force, the insertion post in the mesh chair backrest partition support adjustment structure can be automatically inserted into the corresponding insertion hole.

[0009] Furthermore, the synchronization component includes guide tubes and polyester ropes. There are three guide tubes, which are respectively set on the left wall of the support frame. Polyester ropes are provided in the middle of the left side of the insertion column. The polyester ropes are all inserted into the horizontally adjacent guide tubes, and the guide tubes wrap and protect the path of the polyester ropes.

[0010] Furthermore, the synchronization component also includes a connecting shell, a guide groove, and a movable seat. The connecting shell is located between the right ends of the three guide tubes. The movable seat is slidably connected in the guide groove opened in the inner arc wall of the connecting shell. The right ends of the polyester ropes are all fixedly connected to the left side of the movable seat. Through sliding guidance, the polyester ropes carried by the movable seat are prevented from getting tangled due to rotation during the lateral movement of the movable seat in the mesh chair backrest partition support adjustment structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the adjustable backrest support structure of this mesh chair has the following advantages: 1. When using the mesh chair backrest zone support adjustment structure, the device adopts a zoned approach to adjust the position of the neck, back, and waist areas of the mesh chair backrest according to the user's sitting posture, so that the overall mesh chair backrest fits the user's back better and improves the user's comfort when using the mesh chair backrest.

[0012] 2. When using the mesh chair backrest zone support adjustment structure, the elastic element uses reaction force to make each zone of the mesh chair backrest adaptively fit the user's back, eliminating the need for the user to adjust each area of ​​the mesh chair backrest individually according to their own sitting posture habits.

[0013] 3. When using the mesh chair backrest zone support adjustment structure, the rotation locking elements of each zone can be controlled synchronously through the transmission element, so that the locking of each area of ​​the mesh chair backrest can be achieved synchronously in one step, without the need for individual locking limit of each area, thus improving the ease of operation of mesh chair backrest zone adjustment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the structure of the synchronization component of this utility model; Figure 4This is an enlarged structural diagram of point A in this utility model; Figure 5 This is an enlarged structural diagram of section B of the present invention; Figure 6 This is an enlarged structural diagram of point C in this utility model; Figure 7 This is an enlarged structural diagram of point D in this utility model.

[0015] In the diagram: 1 Support frame, 2 Connecting frame, 3 Zone adjustment mechanism, 31 Fixed seat, 32 Connecting seat one, 33 Neck support, 34 Backrest, 35 Waist support, 36 Adaptive component, 361 Connecting seat two, 362 Rotating shaft two, 363 Hollow shell, 364 Slide, 365 Connecting seat three, 366 Telescopic column, 367 Spring one, 37 Locking component, 371 Protective shell, 372 Disc, 373 Insertion post, 374 Ring, 375 Spring two, 376 Insertion hole, 38 Synchronization component, 381 Guide tube, 382 Polyester rope, 383 Connecting shell, 384 Guide groove, 385 Moving seat. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-7 This embodiment provides a technical solution: a mesh chair backrest partition support adjustment structure, including a support frame 1, a connecting frame 2 at the upper left side of the support frame 1, which is fixed to the bottom of the mesh chair seat by bolts through the mounting hole on the right side of the bottom of the support frame 1, and also includes a partition adjustment mechanism 3; The zone adjustment mechanism 3 includes a fixed base 31, a connecting base 32, a neck support 33, a backrest 34, a lumbar support 35, an adaptive component 36, a locking component 37, and a synchronization component 38. The fixed base 31 is respectively located at the upper and lower ends of the left wall of the support frame 1 and the upper right end of the connecting frame 2. The right end of each fixed base 31 is rotatably connected to the connecting base 32 via a pivot. The upper connecting base 32 has a neck support 33 at its right end, the middle connecting base 32 has a backrest 34 at its right end, and the lower connecting base 32 has a lumbar support 35 at its right end. The neck support 33 is connected to the connecting frame 2, and the backrest 34 and lumbar support 35 are connected to the connecting frame 2. Each support frame 1 is equipped with an adaptive component 36, and each pivot 1 and the vertically adjacent fixed seat 31 is equipped with a locking component 37. A synchronization component 38 is provided between the locking component 37 and the support frame 1. The neck support 33, back support 34 and lumbar support 35 are used to adjust the user's neck, back and waist in different zones. The middle part of the back support 34 and lumbar support 35 is made of polyester mesh. This device adopts a zoned method to adjust the position of the neck, back and waist areas of the mesh chair back according to the user's sitting posture, so that the mesh chair back fits the user's back better and improves the user's comfort when using the mesh chair back. The locking assembly 37 includes a protective shell 371, a disc 372, a pin 373, and a socket 376. The protective shells 371 are respectively located on the front right end of the fixed base 31. A disc 372 is provided at the front end of each of the rotating shafts. The discs 372 are located inside longitudinally adjacent protective shells 371. The outer arc surface of each disc 372 has evenly distributed annular sockets 376. A pin 373 is slidably connected to a circular hole in the center of the left wall of the protective shell 371. The right end of each pin 373 is inserted into a laterally adjacent socket 376. The locking assembly 37 also includes a ring 374 and a second spring 375. The rings 374 are respectively located on the left wall of the protective shell 371 and the outer surface of the pin 373. A second spring 375 is provided between two laterally adjacent rings 374. Springs 375 are movably sleeved on the outside of adjacent inserts 373, and springs 375 are always in a contracted state. The synchronization assembly 38 includes guide tubes 381 and polyester ropes 382. There are three guide tubes 381, which are respectively set on the left wall of the support frame 1. Polyester ropes 382 are provided on the middle left side of each insert 373. The polyester ropes 382 are all inserted into the horizontally adjacent guide tubes 381. The synchronization assembly 38 also includes a connecting shell 383, a guide groove 384, and a movable seat 385. The connecting shell 383 is set between the right ends of the three guide tubes 381. The movable seat 385 is slidably connected in the guide groove 384 opened in the inner arc wall of the connecting shell 383. The right ends of the polyester ropes 382 are all fixed to the left side of the movable seat 385. When adjusting the backrest of the mesh chair using the connection device, the user sits on the seat and leans back in their usual posture. At this time, the user pulls the movable seat 385 with their right hand, causing it to move horizontally to the right along the guide groove 384. The sliding limit between the two prevents the polyester ropes 382 driven by the movable seat 385 from tangling. The movable seat 385 drives the corresponding polyester ropes 382 to move to the right simultaneously. The other end of each polyester rope 382 drives the corresponding insertion post 373 to move horizontally to the left along the corresponding circular hole, causing the other end of each insertion post 373 to disengage from the horizontally adjacent insertion hole 376, thus releasing the rotational limit on the disc 372. During this process, the insertion post 373 drives its own ring 374 to move to the left simultaneously. This causes spring 375 to compress further, guiding the polyester rope 382 through guide tube 381 while simultaneously wrapping and protecting it, preventing contact between the polyester rope 382 and other components within the device. At the same time, the polyester rope 382 between the insert post 373 and the moving seat 385 is under tension. Therefore, the rotational limits of the neck rest 33, backrest 34, and lumbar support 35 can be released in a single step. After the positional adjustments of the neck rest 33, backrest 34, and lumbar support 35 are completed, the user releases the rightward pull applied to the moving seat 385. Subsequently, the compression and reset force of spring 375 causes the ring 374 on the insert post 373 to slide synchronously to the right along the corresponding circular hole, resetting the insert post 373.During the rightward movement of the insert post 373, the polyester rope 382 drives the movable seat 385 to slide to the left and reset along the guide groove 384. Simultaneously, during the rightward movement, the right end of the insert post 373 horizontally engages with the corresponding insertion hole 376 on the disc 372. The outer edge of the insertion hole 376 has an arc-shaped chamfer, which increases the initial insertion diameter between the right end of the insert post 373 and the insertion hole 376, making it easier for the right end of the insert post 373 to be inserted into the corresponding horizontal insertion hole 376. This allows for the adjustment and fixation of the neck support 33, backrest 34, and lumbar support 35. If the insert post 373 is not aligned with the corresponding insertion hole 376, the user simply needs to move their back away from the backrest of the chair. Then, the compression force of the spring 367, through the aforementioned principle, causes the disc 372 to rotate around the corresponding insertion hole. The rotating shaft rotates, causing the disc 372 to rotate so that the right end of the insertion post 373 aligns with the corresponding insertion hole 376. Then, under the compression force of the spring 375, the right end of the insertion post 373 is inserted into the corresponding insertion hole 376, achieving zoned adjustment and fixation of the neck support 33, backrest 34, and lumbar support 35. When the polyester rope 382 passes through the guide tube 381, an iron wire can be connected to the insertion end of the polyester rope 382. The guide tube 381 is pulled through by the iron wire. The polyester rope 382 is made of polyethylene terephthalate, which is a high-molecular polymer generated through esterification, polycondensation, and other chemical reactions. It possesses high strength, excellent wear resistance, weather resistance, low ductility, and corrosion resistance. The rotation locking elements of each zone of the device can be synchronously controlled by the transmission elements. The adaptive component 36 includes a second connecting seat 361, a second rotating shaft 362, a hollow shell 363, a slide 364, and a third connecting seat 365. The second connecting seat 361 is respectively disposed at the upper and lower ends of the left wall of the support frame 1 and the lower right end of the connecting frame 2. The hollow shell 363 is rotatably connected to the interior of each connecting seat 361 through the second rotating shaft 362. The slide 364 is slidably connected to the interior of each hollow shell 363. The right end of each slide 364 is rotatably connected to the third connecting seat 365 through the third rotating shaft. The left arc surface of the neck support 33, the back support frame 34, and the lumbar support frame 35 is fixedly connected to the right end of the laterally adjacent third connecting seat 365. 6 also includes telescopic columns 366 and springs 367. The telescopic columns 366 and springs 367 are longitudinally and evenly arranged between the left side of the hollow shell 363 and the left side of the adjacent slide 364. The springs 367 are all movably sleeved with the outer ends of the adjacent telescopic columns 366. The springs 367 are always in a contracted state. After the limiting of each area of ​​the backrest of the mesh chair is released, the contact pressure applied by the user's back against the neck support 33, backrest frame 34 and lumbar support 35 causes the neck support 33, backrest frame 34 and lumbar support 35 to adaptively rotate around the axis of the corresponding pivot. During this process, the left end of the slide 364 moves along the corresponding hollow shell. The inner wall of 363 adapts, and the compressive force of spring 367 acts on the corresponding neck support 33, backrest 34, and lumbar support 35 through slide 364, rotating shaft 3, and connecting seat 365. This applies a compressive force to the neck support 33, backrest 34, and lumbar support 35 relative to the force applied to the user's back, allowing each area of ​​the neck support 33, backrest 34, and lumbar support 35 to automatically and adaptively conform to the user's neck, back, and waist after leaning against it. This process is convenient. During this process, the left end of the hollow shell 363 adaptively rotates around the corresponding rotating shaft 362, and the right end of the slide 364 adaptively rotates around the corresponding... The rotating shaft features three axes that self-adaptively rotate. After a period of use, the two adjacent rings 374 on the outer shell 371 and the spring 375 between them can be replaced as a whole. The ring 374 on the left wall of the outer shell 371 is fixed with screw 1, and the outer shell 371 is fixed to the corresponding fixing seat 31 with screw 2. At the same time, the hollow shell 363, the slide 364, and the telescopic column 366 and spring 367 inside are replaced as a whole to avoid aging of spring 375 and spring 367. The device uses elastic elements and reaction force to make each section of the mesh chair backrest adaptively fit the user's back.

[0018] The working principle of the mesh chair backrest partition support adjustment structure provided by this utility model is as follows: The support frame 1 is fixed to the bottom of the mesh chair seat with bolts through the mounting holes on the right side of the bottom. Springs 375 and 367 are always in a contracted state. When adjusting the mesh chair backrest partitions using the device, the user sits on the mesh chair seat and then leans back against the backrest in their usual sitting posture. At this time, the user pulls the movable seat 385 with their right hand, causing it to move horizontally to the right along the guide groove 384. The sliding limit between the two prevents the polyester ropes 382 driven by the movable seat 385 from tangling. The movable seat 385 drives the corresponding polyester ropes 382 to move to the right synchronously. The other end of each polyester rope 382 drives the corresponding insertion post 373 to move along the corresponding... The circular hole moves horizontally to the left, causing the other end of the insertion post 373 to separate from the horizontally adjacent insertion hole 376, thereby releasing the rotational limitation on the disc 372. During this process, the insertion post 373 drives its own ring 374 to move to the left simultaneously, causing the spring 375 to be compressed and further contracted. This guides the polyester rope 382 through the guide tube 381 while simultaneously wrapping and protecting the polyester rope 382, ​​preventing it from contacting other components in the device. At the same time, the polyester rope 382 between the insertion post 373 and the moving seat 385 is in a taut state. Thus, the rotational limitation of each adjustment zone of the neck support 33, backrest 34, and lumbar support 35 can be released in just one step. Subsequently, the user can lean against the neck support 33 and backrest 35. The contact pressure applied by the 4 and lumbar support 35 causes the neck support 33, back support 34, and lumbar support 35 to adaptively rotate around the axis of the corresponding pivot. During this process, the left end of the slide 364 adaptively moves along the inner wall of the corresponding hollow shell 363. The compression force of the spring 367 acts on the corresponding neck support 33, back support 34, and lumbar support 35 through the slide 364, pivot 3, and connecting seat 365, thereby applying a compressive force to the neck support 33, back support 34, and lumbar support 35 relative to the force applied to the user's back. This allows each area of ​​the neck support 33, back support 34, and lumbar support 35 to automatically and adaptively conform to the user's neck, back, and waist after leaning against it, making operation convenient. During this process, the hollow shell 363... The left ends of the slides 364 and 375 all rotate adaptively around the corresponding pivot 362. The right ends of the slides 364 all rotate adaptively around the corresponding pivot 3. After the positions of the neck support 33, back support 34, and lumbar support 35 are adjusted in sections, the user releases the right pull force applied to the movable seat 385. Then, through the compression and reset force of the spring 375, the ring 374 on the insertion post 373 drives the insertion post 373 to slide back to the right synchronously along the corresponding circular hole. During the rightward movement of the insertion post 373, the movable seat 385 slides back to the left along the guide groove 384 through the polyester rope 382. At the same time, during the rightward movement of the insertion post 373, its right end is horizontally inserted into the insertion hole 376 on the corresponding disc 372. The outer edge of the insertion hole 376 is provided with an arc-shaped chamfer.The initial insertion diameter between the right end of the insert post 373 and the insertion hole 376 is increased by using a chamfered arc, making it easier for the right end of the insert post 373 to be inserted into the corresponding transverse insertion hole 376. This allows for the adjustment and fixation of the neck support 33, backrest 34, and lumbar support 35 in their respective zone positions.

[0019] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mesh chair backrest partition support adjustment structure, including a support frame (1), wherein a connecting frame (2) is provided at the upper left side of the support frame (1), characterized in that: It also includes a zone control mechanism (3); The zone adjustment mechanism (3) includes a fixed seat (31), a connecting seat (32), a neck support (33), a backrest (34), a lumbar support (35), an adaptive component (36), a locking component (37), and a synchronization component (38). The fixed seat (31) is respectively located at the upper and lower ends of the left wall of the support frame (1) and the upper right end of the connecting frame (2). The right end of the fixed seat (31) is rotatably connected to the connecting seat (32) through a pivot. The right end of the upper connecting seat (32) is provided with The neck support (33) has a backrest (34) at the right end of the middle connecting seat (32), and a waist support (35) at the right end of the lower connecting seat (32). Adaptive components (36) are provided between the neck support (33) and the connecting frame (2), and between the backrest (34), waist support (35) and the support frame (1). Locking components (37) are provided between the rotating shaft and the vertically adjacent fixed seat (31). Synchronization components (38) are provided between the locking components (37) and the support frame (1).

2. The mesh chair backrest zone support adjustment structure according to claim 1, characterized in that: The adaptive component (36) includes a second connecting seat (361), a second rotating shaft (362), a hollow shell (363), a slide (364), and a third connecting seat (365). The second connecting seat (361) is respectively located at the upper and lower ends of the left wall of the support frame (1) and the lower right end of the connecting frame (2). The hollow shell (363) is rotatably connected to the interior of the second connecting seat (361) through the second rotating shaft (362). The slide (364) is slidably connected to the interior of the hollow shell (363). The right end of the slide (364) is rotatably connected to the third connecting seat (365) through the third rotating shaft. The left arc surface of the neck support (33), the back support frame (34), and the waist support frame (35) is fixedly connected to the right end of the horizontally adjacent third connecting seat (365).

3. The mesh chair backrest zoned support adjustment structure according to claim 2, characterized in that: The adaptive component (36) further includes a telescopic column (366) and a spring (367). The telescopic column (366) and the spring (367) are longitudinally and evenly arranged between the left side of the hollow shell (363) and the left side of the adjacent slide (364). The spring (367) is movably sleeved with the outer end of the adjacent telescopic column (366).

4. The mesh chair backrest zone support adjustment structure according to claim 1, characterized in that: The locking assembly (37) includes a protective shell (371), a disc (372), a pin (373), and a socket (376). The protective shell (371) is respectively located on the front right side of the fixed base (31). The front end of the rotating shaft is provided with a disc (372). The discs (372) are all located inside the longitudinally adjacent protective shells (371). The outer arc surface of the discs (372) is provided with a ring of evenly distributed sockets (376). The pins (373) are slidably connected in the circular hole opened in the middle of the left wall of the protective shell (371). The right end of the pins (373) is inserted into the transversely adjacent socket (376).

5. The mesh chair backrest zoned support adjustment structure according to claim 4, characterized in that: The locking assembly (37) also includes a ring (374) and a second spring (375). The ring (374) is respectively disposed on the left wall of the protective shell (371) and the outer side of the insert (373). A second spring (375) is provided between two adjacent rings (374) in the lateral direction. The second spring (375) is movably sleeved on the outer side of the adjacent insert (373).

6. The mesh chair backrest zone support adjustment structure according to claim 4, characterized in that: The synchronization component (38) includes guide tubes (381) and polyester cords (382). There are three guide tubes (381), which are respectively located on the left wall of the support frame (1). Polyester cords (382) are provided on the middle left side of the insert (373). The polyester cords (382) are all inserted into the horizontally adjacent guide tubes (381).

7. The mesh chair backrest zone support adjustment structure according to claim 6, characterized in that: The synchronization component (38) also includes a connecting shell (383), a guide groove (384), and a movable seat (385). The connecting shell (383) is located between the right ends of the three guide tubes (381). The movable seat (385) is slidably connected in the guide groove (384) opened in the inner arc wall of the connecting shell (383). The right ends of the polyester ropes (382) are all fixedly connected to the left side of the movable seat (385).

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