CN117694691A - Seat back plate adjusting device - Google Patents

Abstract

The application relates to a seat back plate adjusting device, mainly relates to the technical field of office seat adjusting devices, and comprises a connecting mechanism sleeved on a seat base lifting cylinder, a swinging mechanism fixedly arranged on the connecting mechanism and an adjusting mechanism penetrating through the connecting mechanism; the swinging mechanism comprises a spring support fixedly arranged on the connecting mechanism, two swinging springs symmetrically arranged in a propping way about the central line of the spring support, a plugboard propped against the swinging springs and a rotating shaft; the rotating shaft penetrates through the plug board and the spring support, the plug board is rotationally connected with the spring support, and the plug board is fixedly connected with the seat back plate. The utility model has the advantages of riding comfort level is good, supporting stability is good.

Description

Seat back plate adjusting device

Technical Field

The application relates to the technical field of office chair adjusting devices, in particular to a chair back plate adjusting device.

Background

Office chairs are various chairs equipped for convenience in daily work and social activities. Common office chairs include executive chairs, middle office chairs, guest chairs, staff chairs, conference chairs, visitor chairs, training chairs, and the like. Office chairs are typically comprised of several parts, such as a seat, floor, back panel, and the like. To meet the increasing demands of people for seating experiences, office chairs are beginning to develop toward versatility.

The adjusting device of the office chair is a core mechanical structure for realizing the adjusting function of the office chair. Common office chair has integrated backplate angle adjustment and bottom plate height adjustment's function, can satisfy people's daily needs. However, when a human body sits on such an office chair for a long time, the back plate and the bottom plate are fixed in relative position, so that the spine and the cervical vertebrae of the human body remain in the same posture for a long time, and fatigue occurs in the waist and the back of the occupant.

With respect to the above related art, it can be known that the existing office chair with the conventional adjusting function has the defect of easily generating fatigue after sitting for a long time.

Disclosure of Invention

In order to further improve the riding comfort of an office chair and reduce fatigue caused by long-time riding, the application provides a seat back plate adjusting device.

The application provides a seat backplate adjusting device adopts following technical scheme:

the seat back plate adjusting device comprises a connecting mechanism sleeved on a seat base lifting cylinder, a swinging mechanism fixedly arranged on the connecting mechanism and an adjusting mechanism penetrating through the connecting mechanism; the swinging mechanism comprises a spring support fixedly arranged on the connecting mechanism, two swinging springs symmetrically arranged in a propping way about the central line of the spring support, a plugboard propped against the swinging springs and a rotating shaft; the rotating shaft penetrates through the plug board and the spring support, the plug board is rotationally connected with the spring support, and the plug board is fixedly connected with the seat back plate.

Through adopting above-mentioned technical scheme, coupling mechanism has played the effect of fixed mounting seat base, the installation of mechanism and adjustment mechanism has been provided for rocking simultaneously and spacing, adjustment mechanism makes the inclination between backplate and the base can be adjusted according to user's actual demand, the spring support in the rocking mechanism provides support and spacing for the installation of rocking spring and plugboard, the rocking spring can provide the support counter force for plugboard, the pivot is worn to establish on plugboard and spring support, make between spring support and plugboard form the rotation connection structure, under the prerequisite that does not show increase backplate and base connection structure stability, allow the backplate to take place to rotate along with plugboard and spring support between, make user's back can the side direction rotate, thereby reach the effect of relaxing the back, the comfort level of riding of further promoting office chair has been realized, the fatigue that takes the time and cause is alleviateed.

Optionally, the plugboard comprises a positioning plate, extension plates symmetrically connected to two sides of the positioning plate and two support plates vertically arranged on the positioning plate; the locating plate is provided with a threaded hole, the supporting plate is provided with a shaft hole, and the rotating shaft penetrates through the supporting plate.

Through adopting above-mentioned technical scheme, the locating plate has played the effect of connecting the backplate, and symmetrical connection can peg graft in the mounting groove of backplate at the extension board of locating plate both sides, has increased the area of contact between locating plate and the backplate, has improved the stability of plugboard to backplate supporting effect and connection structure's bearing capacity, and the backup pad has played the effect of bearing and spacing to the installation of pivot.

Optionally, two limit bumps are symmetrically arranged on the positioning plate, and the limit bumps are inserted into the swing springs.

Through adopting above-mentioned technical scheme, two spacing lugs that the symmetry set up on the locating plate have played the limiting effect to the position of swaing the bullet, can avoid the locating plate to take place the phenomenon that the spring takes place the dislocation when taking place relative rotation with the spring support.

Optionally, a gasket is arranged in the shaft hole on the supporting plate; the gasket is sleeved on the rotating shaft.

Through adopting above-mentioned technical scheme, the packing ring that the shaft hole endotheca was established in the backup pad can reduce the noise that produces when taking place relative rotation between pivot and the backup pad, has further promoted user's use experience.

Optionally, the side wall of the spring support corresponding to the abutting position of the swinging spring protrudes outwards to form a bulge; the swing spring is clamped in the protrusion.

Through adopting above-mentioned technical scheme, the protruding structure that forms with the outside protrusion of rocking spring butt position on the spring support can play limiting displacement to rocking spring, improves spring support to spring bearing structure's stability.

Optionally, the connecting mechanism comprises a bottom plate fixedly connected with the seat, a cover plate fixedly arranged on the bottom plate and sleeved on the seat base lifting cylinder, and a screw rod penetrating through the bottom plate and the cover plate; one end of the screw rod is provided with an end block, and the other end of the screw rod is provided with a threaded hole.

Through adopting above-mentioned technical scheme, the bottom plate among the coupling mechanism has played the effect of connecting the seat, and fixed mounting is on the bottom plate and the cover plate of cover on lifting cylinder has played the effect of connecting base and supplementary installation adjustment mechanism, wears to establish the bolt on apron and bottom plate and can form a overall structure with bottom plate and apron, and the spacing end piece of the one end of screw rod can avoid the screw rod to follow the slippage on apron and the bottom plate.

Optionally, a mounting cylinder is arranged on the cover plate, threads are arranged on the inner wall of the mounting cylinder, and the diameter of the mounting cylinder is gradually increased along the direction away from the cover plate.

Through adopting above-mentioned technical scheme, the installation section of thick bamboo that sets up on the apron can be used for installing backplate elastic force supporting spring, improves the comfort level of backplate supporting effect, and installation section of thick bamboo diameter size is along keeping away from the structural design of apron direction crescent so that install the elastic force supporting spring on the installation section of thick bamboo and be difficult to take place the slippage from the installation section of thick bamboo.

Optionally, a plurality of reinforcing ribs are arranged on a part of the side wall of the cover plate, which is sleeved on the seat base lifting cylinder, and the reinforcing ribs are uniformly distributed along the circumferential direction of the seat base lifting cylinder.

Through adopting above-mentioned technical scheme, the cover is established and is set up a plurality of strengthening ribs that the lateral wall at lift cylinder part set up on the apron can increase the structural strength of apron, improves connection structure's stability and bearing capacity between apron and the base, reduces rocking on the uncertain direction, has further promoted and has taken experience.

Optionally, the adjusting mechanism comprises an adjusting rod penetrating through the bottom plate and the cover plate and a clamping block fixedly arranged in the bottom plate; the adjusting rod is connected with the bottom plate and the cover plate in a sliding manner along the axis direction of the adjusting rod.

Through adopting above-mentioned technical scheme, adjusting the pole in the adjustment mechanism and can driving the slider and inside slide, the structure of sliding connection between adjusting pole and the apron makes the regulation pole take place reciprocating motion through driving the metal strip movable slide in the gliding in-process for the slider can take place the motion in the breach of fixture block, thereby makes the backplate switch between locking and unblock two kinds of states, has realized the function of backplate angle modulation.

Optionally, a flat head is arranged at one end of the adjusting rod far away from the bottom plate.

Through adopting above-mentioned technical scheme, the flat head that bottom plate one end set up is kept away from to the regulation pole can be used for installing the handle, and convenience of customers grips, has further promoted the use and has experienced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the connecting mechanism plays a role in fixedly mounting the seat base, and simultaneously provides a limit for mounting the swinging mechanism and the adjusting mechanism, the inclination angle between the back plate and the base can be adjusted by the adjusting mechanism according to the actual demands of a user, the spring support in the swinging mechanism provides support and limit for mounting the swinging springs and the plugboard, the swinging springs can provide support counter force for the plugboard, the rotating shaft is arranged on the plugboard and the spring support in a penetrating manner, a rotating connecting structure is formed between the spring support and the plugboard, the back plate is allowed to rotate along with the plugboard and the spring support under the premise of not obviously increasing the distance between the back plate and the base and ensuring the stability of the connecting structure of the back plate, the back of the user can rotate laterally, and therefore the effect of relaxing the back is achieved, the riding comfort of the office seat is further improved, and the fatigue caused by long-time riding is relieved;

2. the locating plate plays a role in connecting the backboard, the extension plates symmetrically connected to the two sides of the locating plate can be inserted into the mounting groove of the backboard, the contact area between the locating plate and the backboard is increased, the stability of the supporting effect of the plug board on the backboard and the bearing capacity of the connecting structure are improved, and the supporting plate plays a role in bearing and limiting the installation of the rotating shaft;

3. the utility model provides an adjust pole in adjustment mechanism can drive the slider inside slip, adjusts pole and apron between sliding connection's structure and makes and adjust the pole and drive the slider through drive torsional spring and take place reciprocating motion at gliding in-process for the slider can take place the motion in the breach of fixture block, thereby makes the backplate switch between locking and unblock two kinds of states, has realized the function of backplate angle modulation.

Drawings

Fig. 1 is a schematic structural view of a seat back adjusting device according to an embodiment of the present disclosure.

Fig. 2 is an exploded view of a seat back adjusting device according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural view of the connection mechanism and the adjustment mechanism in the embodiment of the present application.

Fig. 4 is a schematic structural view of a board according to an embodiment of the present application.

Reference numerals illustrate: 1. a connecting mechanism; 11. a bottom plate; 12. a cover plate; 13. a screw; 121. a mounting cylinder; 122. reinforcing ribs; 2. a rocking mechanism; 21. a spring support; 22. a rocking spring; 23. a plug board; 24. a rotating shaft; 211. a protrusion; 231. a positioning plate; 232. an extension plate; 233. a support plate; 234. a limit bump; 235. a gasket; 3. an adjusting mechanism; 31. an adjusting rod; 32. a clamping block; 311. a flat head.

Detailed Description

The present application is described in further detail below in conjunction with fig. 1-4.

Office chairs are various chairs equipped for convenience in daily work and social activities. Common office chairs include executive chairs, middle office chairs, guest chairs, staff chairs, conference chairs, visitor chairs, training chairs, and the like. Office chairs are typically comprised of several parts, such as a seat, floor, back panel, and the like. To meet the increasing demands of people for seating experiences, office chairs are beginning to develop toward versatility. The adjusting device of the office chair is a core mechanical structure for realizing the adjusting function of the office chair. Common office chair has integrated backplate angle adjustment and bottom plate height adjustment's function, can satisfy people's daily needs. However, when a human body sits on such an office chair for a long time, the back plate and the bottom plate are fixed in relative position, so that the spine and the cervical vertebrae of the human body remain in the same posture for a long time, and fatigue occurs in the waist and the back of the occupant. In order to further improve the riding comfort of an office chair and reduce fatigue caused by long-time riding, the application provides a seat back plate adjusting device.

The embodiment of the application discloses a seat back plate adjusting device. Referring to fig. 1, the seat back adjustment device includes a connection mechanism 1, a rocking mechanism 2, and an adjustment mechanism 3. One surface of the connecting mechanism 1 is fixedly connected with the lifting cylinder of the seat base, and the other surface of the connecting mechanism is fixedly connected with the back of the seat cushion. The swinging mechanism 2 and the adjusting mechanism 3 are both arranged inside the connecting mechanism 1. The tilting angle of the backboard can be changed by the adjusting mechanism 3, the adjusting mechanism is fixed at a specific position, the rocking mechanism 2 can enable rocking to occur between the backboard and the cushion, sitting postures of passengers can be changed conveniently, and riding comfort is improved.

Referring to fig. 1, 2 and 3, the connection mechanism 1 includes a base plate 11, a cover plate 12 and a screw 13. Wherein, the bolt hole has been seted up to the four corners position of bottom plate 11, installs positioning bolt in the bolt hole, realizes fixing through bolted connection's mode between bottom plate 11 and the cushion. The cover plate 12 is horizontally arranged on the bottom plate 11, and the screw 13 penetrates through the cover plate 12 and the bottom plate 11 to fix the bottom plate 11 and the cover plate 12. The cover plate 12 is sleeved on the seat base lifting cylinder, and a part of the side wall of the cover plate 12 sleeved on the seat base lifting cylinder is provided with a reinforcing rib 122. The number of the reinforcing ribs 122 is 4. The 4 reinforcing ribs 122 are evenly distributed around the circumference of the seat base lifting cylinder. The reinforcing ribs 122 can increase the load carrying capacity of the cover plate 12. The cover plate 12 is provided with a mounting cylinder 121, and the diameter of the mounting cylinder 121 gradually increases in a direction away from the cover plate 12. One end of the screw 13 is provided with an end block for limiting, and the other end of the screw 13 is provided with a threaded hole.

Referring to fig. 1, 2 and 4, the rocking mechanism 2 includes a spring supporter 21, a rocking spring 22, a plug board 23 and a rotation shaft 24. The spring support 21 is fixedly mounted on the base plate 11 by means of a screw connection, and the wobble spring 22 is mounted in the spring support 21. The number of rocking springs 22 is 2. The 2 rocker springs 22 are arranged symmetrically with respect to the geometric center of the spring support 21. The rocking spring 22 of the spring holder 21 is formed with a protrusion 211 protruding outward at a portion abutting against the spring holder 21. The concave structure inside the protrusion 211 plays a limiting role on the rocking spring 22. The rotation shaft 24 is inserted through the insertion plate 23 and the spring support 21, so that the insertion plate 23 and the spring support 21 can rotate around the axial direction of the rotation shaft 24.

Referring to fig. 4, the plugboard 23 includes a positioning plate 231, an extension plate 232, a support plate 233, a limit bump 234, and a washer 235. Wherein, a plurality of bolt holes for being connected with the back plate bolts are formed on the positioning plate 231. The extension plate 232 is symmetrically arranged about the positioning plate 231, and the extension plate 232 is perpendicular to the plane of the positioning plate 231 and is inserted into the mounting slot of the back plate. The number of the supporting plates 233 is 2, the 2 supporting plates 233 are vertically arranged on the positioning plate 231, and circular through holes are formed in the supporting plates 233. The rotating shaft 24 is inserted into the circular through holes of the two support plates 233. The circular through holes in the supporting plate 233 are provided with the gaskets 235 made of polymer materials, and the gaskets 235 can prevent noise generated by friction between the rotating shaft 24 and the supporting plate 233, so that riding experience of a user is further improved.

Referring to fig. 1, 2 and 3, the adjusting mechanism 3 includes an adjusting lever 31 and a clip 32. Wherein the adjustment rod 31 is a solid metal rod with a crank. The end of adjusting lever 31 that keeps away from coupling mechanism 1 is provided with flat head 311, and flat head 311 structure can be used for installing the handle, increases the area of contact between handle and the adjusting lever 31. The handle can facilitate the user to adjust and rotate the adjustment lever 31. The latch 32 is a solid metal block provided with a plurality of latch grooves. The clamping block 32 is fixedly arranged in the bottom plate 11 in a welding mode. The adjusting rod 31 is inserted through the bottom plate 11 and the cover plate 12, and the adjusting rod 31 is slidably connected with the bottom plate 11 and the cover plate 12 along the axis direction thereof. The adjusting rod 31 can drive the metal strip sleeved on the fixed shaft body to rotate in the sliding process, and the other end of the metal strip can drive the sliding block to slide, so that the sliding block can be clamped into the clamping groove of the clamping block 32 or slide out of the clamping groove, and the switching of the locking state and the unlocking state of the seat back plate is realized. After the back plate of the seat is unlocked, the rotating angle of the back plate can be adjusted according to the actual demands of users, and after the back plate is adjusted to a proper angle, the back plate and the seat cushion are locked.

The implementation principle of the seat back plate adjusting device provided by the embodiment of the application is as follows: the user promotes the regulation pole 31 along the axis direction of regulation pole 31, and regulation pole 31 can drive the metal strip and rotate around the axle, and the baffle of fixed on the metal strip can block in or slide out in the draw-in groove of fixture block 32 to realize the regulatory function of backplate angle. The release button of the seat base lifting cylinder can be extruded by the adjusting rod 31 by rotating around the axis direction of the adjusting rod 31, so that the height of the seat cushion is adjusted. When a user sits for a long time and needs to change sitting postures, the plugboard 23 connected with the backboard can overcome the elasticity of the swinging spring 22 to rotate under the action of the back force of the user, and after the sitting postures are restored, the plugboard 23 can be restored to the initial position under the action of the swinging spring 22, so that the backboard returns to the initial position under the action of the plugboard 23. Therefore, the invention aims of adjusting the sitting posture of the user and improving the riding experience are fulfilled.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. A seat back plate adjustment device, characterized in that: comprises a connecting mechanism (1) sleeved on a lifting cylinder of a seat base, a swinging mechanism (2) fixedly arranged on the connecting mechanism (1) and an adjusting mechanism (3) penetrating on the connecting mechanism (1); the swinging mechanism (2) comprises a spring support (21) fixedly arranged on the connecting mechanism (1), two swinging springs (22) symmetrically arranged in a propping way about the center line of the spring support (21), a plugboard (23) propped against the swinging springs (22) and a rotating shaft (24); the rotating shaft (24) is arranged on the plug board (23) and the spring support (21) in a penetrating mode, the plug board (23) is connected with the spring support (21) in a rotating mode, and the plug board (23) is fixedly connected with the seat back plate.

2. The seat back adjustment apparatus of claim 1, wherein: the plug board (23) comprises a positioning board (231), extension boards (232) symmetrically connected to two sides of the positioning board (231) and two support boards (233) vertically arranged on the positioning board (231); threaded holes are formed in the positioning plate (231), shaft holes are formed in the supporting plate (233), and the rotating shaft (24) penetrates through the supporting plate (233).

3. A seat back adjustment apparatus according to claim 2, wherein: two limit lugs (234) are symmetrically arranged on the positioning plate (231), and the limit lugs (234) are inserted into the swing spring (22).

4. A seat back adjustment apparatus according to claim 2, wherein: a gasket (235) is arranged in the shaft hole on the supporting plate (233); the gasket (235) is sleeved on the rotating shaft (24).

5. The seat back adjustment apparatus of claim 1, wherein: a side wall of the spring support (21) corresponding to the abutting position of the swinging spring (22) protrudes outwards to form a bulge (211); the swing spring (22) is clamped in the protrusion (211).

6. The seat back adjustment apparatus of claim 1, wherein: the connecting mechanism (1) comprises a bottom plate (11) fixedly connected with the seat, a cover plate (12) fixedly arranged on the bottom plate (11) and sleeved on a seat base lifting cylinder, and a screw rod (13) penetrating through the bottom plate (11) and the cover plate (12); one end of the screw rod (13) is provided with an end block (131), and the other end of the screw rod is provided with a threaded hole.

7. The seat back adjustment apparatus of claim 6, wherein: the cover plate (12) is provided with a mounting cylinder (121), the inner wall of the mounting cylinder (121) is provided with threads, and the diameter of the mounting cylinder (121) is gradually increased along the direction away from the cover plate (12).

8. The seat back adjustment apparatus of claim 6, wherein: part of the side wall of the cover plate (12) sleeved on the seat base lifting cylinder is provided with a plurality of reinforcing ribs (122), and the reinforcing ribs (122) are uniformly distributed along the circumferential direction of the seat base lifting cylinder.

9. The seat back adjustment apparatus of claim 6, wherein: the adjusting mechanism (3) comprises an adjusting rod (31) penetrating through the bottom plate (11) and the cover plate (12) and a clamping block (32) fixedly arranged in the bottom plate (11); the adjusting rod (31) is connected with the bottom plate (11) and the cover plate (12) in a sliding manner along the axis direction of the adjusting rod.

10. The seat back adjustment apparatus of claim 9, wherein: one end of the adjusting rod (31) far away from the bottom plate (11) is provided with a flat head (311).