CN217471543U - Return mechanism and auditorium chair - Google Patents

Abstract

The utility model relates to the technical field of chairs and discloses a return mechanism and an auditorium chair, wherein the return mechanism comprises a connecting shaft connected with the side wall of a handrail, a shell which rotates relative to the connecting shaft and is used for being connected with a seat bag or a backrest, a rotation angle limiting part arranged on the connecting shaft and in the shell, and a limiting column and an elastic compression part which are respectively arranged in the shell; the rotation angle limiting piece and the limiting column are used for limiting the rotation angle of the shell; two ends of the elastic compression piece are respectively connected with the rotation angle limiting piece and the shell; the seat bag can be opened forwards and reset backwards or the backrest can swing forwards and backwards by arranging a connecting shaft connected with the handrail, a rotation angle limiting part connected with the connecting shaft, a shell rotating relative to the connecting shaft, a limiting column arranged on the shell and an elastic compression part; the multifunctional auditorium chair has the advantages of simple structure and strong universality, can be applied to the seat bag and the backrest, and is favorable for reducing the selling price of the multifunctional auditorium chair.

Description

Return mechanism and auditorium chair

Technical Field

The utility model relates to a technical field of chair, in particular to answer mechanism and auditorium chair.

Background

The existing chair has various functions, and generally has the function of swinging a backrest or the function of returning when a seat bag rotates forwards and backwards. The backrest swinging mechanism is disclosed as a Chinese patent with the publication number of CN214678307U, and a chair with a swinging backrest is disclosed, wherein the backrest component swings forwards and backwards through the matching of a cross rod, a connecting piece and an elastic piece, and the arc-shaped groove is matched with a limiting column to limit the swinging angle of the backrest component. The seat bag return mechanism generally comprises rotating shafts respectively arranged on two side walls of the seat bag, the end parts of the rotating shafts are rotatably connected with handrails arranged on two sides, and limiting mechanisms used for limiting the rotating angle of the rotating shafts are arranged on the handrails, so that the rotating shafts drive the seat bag to rotate within a certain angle range. Therefore, the backrest swinging mechanism and the seat bag returning mechanism are both composed of different parts, the working principles are different, when the two mechanisms are both applied to the same chair, the structure of the chair is complex, and when the chair is composed of more mechanisms, the production cost is higher, namely the selling price is higher; and the prior art lacks a return mechanism which can be used for both the backrest and the seat bag.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's weak point, the utility model aims to provide a reply mechanism and auditorium chair that can be used for the back can be used for the seat package again and suitability is strong, aim at solving above-mentioned problem.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a return mechanism comprises a connecting shaft connected with the side wall of a handrail, a shell which rotates relative to the connecting shaft and is used for being connected with a seat bag or a backrest, a rotation angle limiting piece arranged on the connecting shaft and arranged in the shell, and a limiting column and an elastic compression piece which are respectively arranged in the shell; the rotation angle limiting piece and the limiting column are used for limiting the rotation angle of the shell; the two ends of the elastic compression piece are respectively connected with the rotation angle limiting piece and the shell.

In the return mechanism, the rotation angle limiting piece is provided with a first limiting protrusion and a second limiting protrusion, and the first limiting protrusion and the second limiting protrusion are respectively used for abutting against the side wall of the limiting column; the angle between the first limiting protrusion and the second limiting protrusion is 90 degrees.

In the return mechanism, the rotation angle limiting piece is provided with a first limiting protrusion and a second limiting protrusion, and the first limiting protrusion and the second limiting protrusion are respectively used for abutting against the side wall of the limiting column; the angle between the first limiting protrusion and the second limiting protrusion is 90 degrees.

The return mechanism is characterized in that the elastic compression piece is a spring, and the connecting shaft penetrates through the middle of the spring.

The return mechanism comprises a shell and an inner shell, wherein the shell comprises an outer shell and an inner shell, the outer shell is used for being connected with the side wall of the seat bag or the backrest, and the inner shell is arranged inside the seat bag or the backrest; the shell body is further provided with an installation column opposite to the limiting column, the limiting column and the installation column are provided with threaded holes, the inner shell is provided with through holes corresponding to the threaded holes, and the through holes correspond to the threaded holes.

In the return mechanism, a shaft sleeve is sleeved on the connecting shaft, a clamping groove is formed in the outer peripheral wall of the shaft sleeve, an avoidance hole of the shell is formed in the clamping groove, and the shell rotates relative to the shaft sleeve; the connecting shaft penetrates through two side walls of the shell.

The restoring mechanism is characterized in that the connecting shaft is respectively provided with two limiting grooves, the two limiting grooves are respectively clamped with split retaining rings, the two split retaining rings are respectively provided with a clamping block, and the clamping blocks are arranged in the limiting grooves; the side wall of one split retainer ring is tightly contacted with the side wall of the shaft sleeve; and the other split retainer ring is clamped at the end part of the connecting shaft.

The restoring mechanism is characterized in that an extension shaft is connected to the end part, far away from the handrail, of the connecting shaft, and a disc type damper rotating relative to the extension shaft is arranged on the extension shaft.

The return mechanism, wherein, the connecting axle orientation be provided with the constant head tank on the tip of handrail, be provided with on the lateral wall of handrail with the joint piece that the constant head tank corresponds, be provided with the U-shaped groove on the joint piece, the connecting axle joint is in the U-shaped inslot of joint piece.

An auditorium chair comprises armrests which are arranged in bilateral symmetry, a seat bag arranged between the two armrests, a backrest arranged behind the seat bag, supporting legs arranged below the two armrests and a return mechanism.

Has the beneficial effects that:

the utility model provides a return mechanism and an auditorium chair, wherein the return mechanism can realize forward opening and backward resetting of a seat bag or front-back swinging of a backrest by arranging a connecting shaft connected with a handrail, a rotation angle limiting part connected with the connecting shaft, a shell rotating relatively to the connecting shaft, a limiting column arranged on the shell and an elastic compression part; the multifunctional auditorium chair has the advantages of simple structure and strong universality, can be applied to the seat bag and the backrest, and is favorable for reducing the selling price of the multifunctional auditorium chair.

Drawings

Fig. 1 is a schematic structural view of the auditorium chair provided by the present invention.

Fig. 2 is a schematic view of the auditorium chair with the backrest and seat bag removed.

Fig. 3 is an exploded view of the return mechanism.

Fig. 4 is an exploded view of the return mechanism.

Fig. 5 is a cross-sectional view of the return mechanism.

Description of the main element symbols: 1-armrest, 11-clamping block, 2-seat bag, 3-backrest, 4-return mechanism, 41-connecting shaft, 411-limiting groove, 412-positioning groove, 42-shell, 421-outer shell, 4211-limiting column, 4212-mounting column, 4213-threaded hole, 4214-third mounting hole, 422-inner shell, 4221-second mounting hole, 4222-through hole, 43-rotation angle limiting piece, 431-first limiting bulge, 432-second limiting bulge, 433-first mounting hole, 44-elastic compression piece, 45-shaft sleeve, 46-open retainer ring, 461-clamping block, 47-extension shaft and 48-disc damper.

Detailed Description

The utility model provides a reply mechanism and auditorium chair, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following refers to the attached drawing and the embodiment is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.

Referring to fig. 1-4, the present invention provides a restoring mechanism 4, which includes a connecting shaft 41 connected to a side wall of a handrail 1, a housing 42 relatively rotating with the connecting shaft 41 and used for connecting with a seat bag 2 or a backrest 3, a rotation angle limiting member 43 disposed on the connecting shaft 41 and disposed in the housing 42, and a limiting post 4211 and an elastic compression member 44 respectively disposed in the housing 42; the rotation angle limiting member 43 and the limiting column 4211 are used for limiting the rotation angle of the housing 42; both ends of the elastic compression member 44 are connected to the rotation angle limiting member 43 and the housing 42, respectively.

When the restoring mechanism 4 is applied to the seat bag 2, the connecting shaft 41 is fixedly connected to the armrest 1, when a person sits on the seat bag 2, the seat bag 2 drives the shell 42 to rotate, the shell 42 drives the limiting column 4211 arranged thereon to synchronously rotate forwards around the connecting shaft 41, when the limiting column 4211 is in contact with the rotation angle limiting piece 43, the seat bag 2 is in a completely opened state (or the seat bag 2 is horizontal to the ground), and meanwhile, the shell 42 drives the elastic compression piece 44 connected with the shell to rotate, so that the elastic compression piece 44 is stretched and deformed; when a person does not sit on the seat bag 2, the elastic compression piece 44 has a tendency of recovering the deformation thereof, so that the shell 42, the seat bag 2 and the limiting column 4211 arranged on the shell 42 are driven to rotate backwards around the connecting shaft 41 until the limiting column 4211 contacts with the rotation angle limiting piece 43 arranged on the connecting shaft 41, and the seat bag 2 returns to the right position (or the seat bag 2 is vertical to the ground), thereby realizing the opening or returning of the seat bag 2. Similarly, when the return mechanism 4 is applied to the backrest 3, when a person leans on the backrest 3, the backrest 3 drives the shell 42, and the shell 42 drives the elastic compression element 44 to be stretched and deformed; when a person does not lean on the backrest 3, the backrest 3 is restored by the elastic compression member 44, thereby realizing the forward and backward rocking of the backrest 3.

The return mechanism 4 can realize the forward opening and the backward resetting of the seat bag 2 or the forward and backward swinging of the backrest 3 by arranging a connecting shaft 41 connected with the armrest 1, a rotation angle limiting member 43 connected with the connecting shaft 41, a shell 42 rotating relative to the connecting shaft 41, a limiting column 4211 arranged on the shell 42 and an elastic compression member 44; and the structure is simple, the universality is strong, the multifunctional auditorium chair can be applied to the seat bag 2 and the backrest 3, and the selling price of the multifunctional auditorium chair can be reduced.

Referring to fig. 3 to 4, further, a first limiting protrusion 431 and a second limiting protrusion 432 are disposed on the rotation angle limiting member 43, and the first limiting protrusion 431 and the second limiting protrusion 432 are respectively used for abutting against the side wall of the limiting column 4211; the angle between the first stopper protrusion 431 and the second stopper protrusion 432 is 90 °. In this embodiment, when the second limiting protrusion 432 abuts against the limiting column 4211, the seat bag 2 is in an open state or the backrest 3 is in a backward swinging state; when the first stopper protrusion 431 abuts against the stopper column 4211, the seat bag 2 is in the retracted state or the backrest 3 is in the forward return state. It should be noted that when the restoring mechanism 4 is applied to the backrest 3, the angle between the first stopper protrusion 431 and the second stopper protrusion 432 may be set to be between 15 to 30 °, so that the backrest 3 can be rocked back and forth between 15 to 30 °.

Referring to fig. 2 to 5, further, a first mounting hole 433 is disposed on the rotation angle limiting member 43, a second mounting hole 4221 is disposed on a side wall of the housing 42 away from the armrest 1, one end of the elastic compression member 44 is inserted into the first mounting hole 433, and the other end of the elastic compression member 44 is inserted into the second mounting hole 4221. In practical use, the rotation angle limiting member 43 is fixedly connected to the connecting shaft 41, that is, the end of the elastic compression member 44 connected to the rotation angle limiting member 43 does not rotate, so that when the housing 42 rotates, the end of the elastic compression member 44 connected to the housing can be driven to rotate synchronously, and in the process of rotating the housing 42, the elastic compression member 44 is gradually stretched, so that the elastic compression member 44 has a tendency of recovering its deformation after being deformed, and the elastic compression member 44 can drive the housing 42 and the seat bag 2 or the backrest 3 connected to the housing 42 to return to the original position.

Further, the elastic compression member 44 is a spring, and the connecting shaft 41 passes through the middle of the spring. The spring with simple structure is skillfully applied to the return mechanism 4, so that the return mechanism 4 has low manufacturing cost.

Referring to fig. 2-5, further, the housing 42 includes an outer housing 421 and an inner housing 422, the outer housing 421 is used for connecting with the side wall of the seat bag 2 or the backrest 3, and the inner housing 422 is disposed inside the seat bag 2 or the backrest 3; the outer shell 421 is further provided with an installation column 4212 opposite to the limit column 4211, the limit column 4211 and the installation column 4212 are both provided with threaded holes 4213, the inner shell 422 is provided with through holes 4222 corresponding to the threaded holes 4213, and the through holes 4222 and the corresponding threaded holes 4213 are internally provided with screws (not shown in the figure). During installation, the connecting shaft 41 penetrates through the outer shell 421, the rotation angle limiting member 43 is clamped on the connecting shaft 41, the rotation angle limiting member 43 is located between the first limiting protrusion 431 and the second limiting protrusion 432, then two ends of the elastic compression member 44 are respectively inserted into the first mounting hole 433 of the rotation angle limiting member 43 and the second mounting hole 4221 of the inner shell 422, the through hole 4222 of the inner shell 422 is aligned with the threaded hole 4213 on the outer shell 421, a screw is screwed into the through hole 4222 and the threaded hole 4213, fixing of the outer shell 421 and the inner shell 422 is achieved, then the inner shell 422 is inserted into the accommodating groove in the seat bag 2 or the backrest 3, and the outer shell 421 protrudes out of the seat bag 2 or the backrest 3.

Referring to fig. 2 to 4, further, two third mounting holes 4214 are formed in the outer shell 421, and screws (not shown) are disposed in the two third mounting holes 4214, and ends of the screws are connected to the side walls of the seat bag 2 or the backrest 3. The outer shell 421 protrudes out of the seat bag 2 or the backrest 3 by screwing screws into the third mounting holes 4214 on the outer shell 421 and the side wall of the seat bag 2 or the backrest 3. The installation of above-mentioned structure is convenient and swift.

Referring to fig. 2 to 5, further, a shaft sleeve 45 is sleeved on the connecting shaft 41, a clamping groove is formed in an outer peripheral wall of the shaft sleeve 45, an avoiding hole of the housing 42 is formed in the clamping groove, and the housing 42 rotates relative to the shaft sleeve 45; the connecting shaft 41 penetrates both side walls of the housing 42. The shaft sleeve 45 and the clamping groove are arranged to limit the movement displacement amplitude of the shell 42, so that the rotation stability of the seat bag 2 or the backrest 3 and the armrest 1 is improved. During assembly, the shaft sleeve 45 is clamped on the connecting shaft 41, and then the shell 42 is clamped in the clamping groove of the shaft sleeve 45.

Referring to fig. 3 to fig. 5, further, two limiting grooves 411 are respectively disposed on the connecting shaft 41, split retaining rings 46 are respectively clamped in the two limiting grooves 411, clamping blocks 461 are disposed on both the split retaining rings 46, and the clamping blocks 461 are disposed in the limiting grooves 411; the side wall of one of the split collars 46 is in close contact with the side wall of the collar 45; the other split retainer ring 46 is clamped at the end of the connecting shaft 41. In this embodiment, the sleeve 45 and one of the split collars 46 define the slot, thereby facilitating the positioning of the outer housing 421 in the slot. During the equipment, earlier with axle sleeve 45 card go into on connecting axle 41, go into axle sleeve 45 with shell body 421 card again, then go into spacing groove 411 with one of them split collar 46 card, make split collar 46 and axle sleeve 45 cooperate, form the draw-in groove that is used for holding shell body 421, then go into connecting axle 41 with rotation angle locating part 43 card again, be connected elastic compression piece 44 with rotation angle locating part 43 and interior casing 422 again, lock shell body 421 and shell body 421, go into spacing groove 411 on connecting axle 41 with another split collar 46 card again, realize the ascending location of connecting axle 41 left and right sides. The two stopper grooves 411 and the two snap rings 46 are provided to restrict the displacement of the connecting shaft 41 in the left-right direction.

Referring to fig. 2 and fig. 4 to 5, further, an elongated shaft 47 is connected to an end of the connecting shaft 41 away from the armrest 1, and a disc damper 48 is disposed on the elongated shaft 47 for rotating relative to the elongated shaft. The connecting shaft 41 and the extension shaft 47 do not rotate, the disc damper 48 is connected with the inside of the seat bag 2 or the backrest 3, and the function of slowing the rotating speed of the shell 42 is achieved, namely, the seat bag 2 or the backrest 3 is slowly restored under the action of the disc damper 48, and the function of buffering is achieved. In this embodiment, the two restoring mechanisms 4 are respectively disposed on two side walls of the seat bag 2 or the backrest 3, one of the restoring mechanisms 4 is provided with a disc damper 48, the other restoring mechanism 4 is not required to be provided with the disc damper 48, and the disc damper 48 on one of the restoring mechanisms 4 is used for controlling the slow restoring of the seat bag 2 or the backrest 3.

Referring to fig. 1 and 3, further, a positioning groove 412 is disposed at an end of the connecting shaft 41 facing the armrest 1, a clamping block 11 corresponding to the positioning groove 412 is disposed on a side wall of the armrest 1, a U-shaped groove is disposed on the clamping block 11, and the connecting shaft 41 is clamped in the U-shaped groove of the clamping block 11. When in actual use, be provided with joint piece 11 on handrail 1, directly go into down the card from last with connecting axle 41 in the U-shaped groove can realize that reply mechanism 4 on seat package 2 or the back 3 and the joint piece 11 joint on handrail 1, the equipment is convenient and quick. However, since the connecting shaft 41 and the clamping block 11 are clamped instead of fixed, the connecting shaft 41 needs to be limited by the split retainer ring 46.

Referring to fig. 1, further, the present invention further provides an auditorium chair, which includes armrests 1 arranged in bilateral symmetry, a seat bag 2 arranged between the two armrests 1, a backrest 3 arranged behind the seat bag 2, supporting legs arranged below the two armrests 1 (in this embodiment, the armrests 1 and the supporting legs are of an integral structure), and the return mechanism 4. Auditorium chair is through setting up the same, the theory of action is the same on seat package 2 and back 3 respectively return mechanism 4 for seat package 2 can be opened forward, reset backward or realize that back 3 sways around, makes auditorium chair's simple structure, is favorable to reducing manufacturing cost.

To sum up, the restoring mechanism 4 provided by the present invention can realize the forward opening and the backward resetting of the seat bag 2 or the forward and backward swinging of the backrest 3 by the arrangement of the connecting shaft 41 connected to the armrest 1, the rotation angle limiting member 43 connected to the connecting shaft 41, the housing 42 relatively rotating with the connecting shaft 41, the limiting post 4211 arranged on the housing 42, and the elastic compression member 44; and the structure is simple, the universality is strong, the multifunctional auditorium chair can be applied to the seat bag 2 and the backrest 3, and the selling price of the multifunctional auditorium chair can be reduced. The first and second limit protrusions 431 and 432 are provided and define the angle therebetween for defining the rotation angle of the seat pack 2 or the backrest 3. The first and second mounting holes 433 and 4221 are provided for fixing both ends of the elastic compression member 44. The outer shell 421 and the inner shell 422 are connected by the mounting posts 4212, the threaded holes 4213, the through holes 4222 and screws. A third mounting hole 4214 is provided for the outer shell 421 to protrude from the seat bag 2 or the backrest 3. A shaft sleeve 45 and a slot are provided for limiting the housing 42. The stopper groove 411 and the circlip 46 are provided for stopping the displacement of the connecting shaft 41 from the left-right direction. The disc damper 48 is provided for returning the seat bag 2 or the backrest 3 slowly. The positioning groove 412 and the U-shaped groove are arranged to enable the connecting shaft 41 to be quickly clamped with the clamping block 11.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be in communication within two elements or in interactive relationship between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It should be understood that equivalents and modifications of the present invention and its inventive concept may be made by those skilled in the art, and all such modifications and alterations should fall within the scope of the present invention.

Claims (10)

1. A return mechanism is characterized by comprising a connecting shaft connected with the side wall of a handrail, a shell which rotates relative to the connecting shaft and is used for being connected with a seat bag or a backrest, a rotation angle limiting piece arranged on the connecting shaft and arranged in the shell, and a limiting column and an elastic compression piece which are respectively arranged in the shell; the rotation angle limiting piece and the limiting column are used for limiting the rotation angle of the shell; the two ends of the elastic compression piece are respectively connected with the rotation angle limiting piece and the shell.

2. The return mechanism according to claim 1, wherein the rotation angle limiting member is provided with a first limiting protrusion and a second limiting protrusion, and the first limiting protrusion and the second limiting protrusion are respectively used for abutting against the side wall of the limiting post; the angle between the first limiting protrusion and the second limiting protrusion is 90 degrees.

3. The return mechanism as claimed in claim 1, wherein the rotation angle limiting member has a first mounting hole, the housing has a second mounting hole on a side wall thereof away from the armrest, one end of the elastic compression member is inserted into the first mounting hole, and the other end of the elastic compression member is inserted into the second mounting hole.

4. The return mechanism of claim 3, wherein the resilient compression member is a spring, and the connecting shaft passes through a middle portion of the spring.

5. The return mechanism of claim 1, wherein the housing comprises an outer housing for attachment to a side wall of a seat pack or a backrest and an inner housing disposed within the seat pack or backrest; the shell body is further provided with an installation column opposite to the limiting column, the limiting column and the installation column are provided with threaded holes, the inner shell is provided with through holes corresponding to the threaded holes, and the through holes correspond to the threaded holes.

6. The return mechanism according to claim 1, wherein a sleeve is sleeved on the connecting shaft, a clamping groove is formed in the outer peripheral wall of the sleeve, the avoidance hole of the housing is formed in the clamping groove, and the housing rotates relative to the sleeve; the connecting shaft penetrates through two side walls of the shell.

7. The restoring mechanism according to claim 6, wherein the connecting shaft is provided with two limiting grooves, the two limiting grooves are respectively clamped with split retaining rings, the two split retaining rings are provided with clamping blocks, and the clamping blocks are arranged in the limiting grooves; the side wall of one split retainer ring is tightly contacted with the side wall of the shaft sleeve; and the other split retainer ring is clamped at the end part of the connecting shaft.

8. The return mechanism according to claim 1, wherein an extension shaft is connected to an end of the connecting shaft away from the armrest, and a disc damper is disposed on the extension shaft and rotates relative to the extension shaft.

9. The restoring mechanism according to claim 1, wherein a positioning groove is provided on an end of the connecting shaft facing the armrest, a clamping block corresponding to the positioning groove is provided on a side wall of the armrest, a U-shaped groove is provided on the clamping block, and the connecting shaft is clamped in the U-shaped groove of the clamping block.

10. An auditorium chair, comprising armrests arranged in bilateral symmetry, a seat bag arranged between the two armrests, a backrest arranged behind the seat bag, and legs arranged below the two armrests, characterized in that it further comprises a return mechanism according to any one of claims 1-9.

Images