CN214595133U

CN214595133U - Folding turnover mechanism suitable for seat and folding chair

Info

Publication number: CN214595133U
Application number: CN202120585515.8U
Authority: CN
Inventors: 吴青松; 陈发昆; 裘沈强; 刘星; 李建民; 张淑婷; 张小东
Original assignee: Anji Shengxin Office Furniture Co ltd
Current assignee: Anji Shengxin Office Furniture Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-11-05
Anticipated expiration: 2031-03-23

Abstract

The utility model relates to a seat design field, concretely relates to folding seat and folding part's structural design. The utility model discloses a can realize through following technical scheme: the utility model provides a folding tilting mechanism suitable for seat, contain sit the bench arm and with sit the rotor arm that the bench arm rotation is connected, still contain with the rotor arm rotate the handrail arm of connecting and both ends respectively with hold up the arm and with sit the articulated arm that the bench arm rotation is connected, it is equipped with the holding tank on the bench arm to sit, sliding connection has the spring bolt on the rotor arm, the spring bolt contains the insert piece, still be connected with on the rotor arm and be used for the drive block that the spring bolt removed. The utility model aims at providing a folding tilting mechanism and a folding chair suitable for seat, the back of the chair keeps for the independence of chair foot rotating the in-process, and the chair foot is not influenced, and the seat possesses two kinds of states of upset state and locking state, and it is convenient to switch, promotes the stability of seat use.

Description

Folding turnover mechanism suitable for seat and folding chair

Technical Field

The utility model relates to a seat design field, concretely relates to folding seat and folding part's structural design.

Background

The seat is a common household article and is commonly used in places such as schools, public places, hospitals, restaurants, hotels, companies, families and the like. Compared with the common seat, the folding chair has the characteristics of space saving and convenient storage and transportation. For example, chinese patent publication No. CN201821781613.3 discloses a folding chair, which comprises a seat, legs, and a backrest, wherein the backrest and the seat are rotatably connected by a rotating shaft, and when the folding chair needs to be folded, the backrest and the seat are operated to approach each other and rotate from a predetermined angle to be close to each other, thereby achieving the purpose of saving space.

However, such an operation has obvious disadvantages: on the one hand, such folding tends to cause the legs to rotate together. The frame-type folding chair is suitable for a common frame-type folding chair with low cost and simple structure, but for a sofa chair, the chair legs usually have certain weight, and the chair leg parts usually have claw disk structures, so that the folding process is inconvenient. On the other hand, the folding and locking states of the chair back are adjusted by external force, and the chair back is not locked, so that the chair back can be freely folded, but the stability in the using process is adversely affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a folding tilting mechanism and a folding chair suitable for seat, the back of the chair keeps for the independence of chair foot rotating the in-process, and the chair foot is not influenced, and the seat possesses two kinds of states of upset state and locking state, and it is convenient to switch, promotes the stability of seat use.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a folding tilting mechanism suitable for seat, contain sit the bench arm and with sit the rotor arm that the bench arm rotation is connected, still contain with the rotor arm rotate the handrail arm of connecting and both ends respectively with hold up the arm and with sit the articulated arm that the bench arm rotation is connected, it is equipped with the holding tank on the bench arm to sit, sliding connection has the spring bolt on the rotor arm, the spring bolt includes and is used for the immigration/shift out the insert piece of holding tank, still be connected with on the rotor arm and be used for the drive block that the spring bolt removed.

In the present case, the quadrangle frame structure is used, that is, four arms which are mutually rotatably connected are respectively a stool arm, a rotating arm, an armrest arm and a hinged arm, and the relative rotation of the stool arm and the rotating arm is realized by utilizing the quadrangle easy rotation principle. In the state of normal use of the user, the bolt 3 relatively fixes the rotating arm and the stool arm, and in this case, the four sides are relatively stable and cannot rotate. When the user needs the seat to be folded, the user only needs to operate the driving block, so that the lock tongue moves, the insertion piece leaves the accommodating groove, and the rotating arm and the stool arm can rotate relatively at the moment. And when the bolt returns, the relative locking of the four arms can be realized. The user can operate the driving block to enable the lock tongue to return, or an automatic elastic structure is designed to enable the lock tongue to return, and the functions can be achieved.

So far, technical scheme has realized two functions, and function one, the pivoted arm is independent with the rotation action of sitting the bench arm, and then can realize the upset of the relative bench of back, and this upset action is irrelevant with the chair leg, can realize the asynchronous rotation of chair leg. And the second function is that when the chair is in a use state, the lock tongue locks the relative positions of the rotating arm and the stool arm, so that the stability of the use state is improved.

As the utility model discloses a preferred, the drive block contains presses splenium and drive inclined plane, be equipped with on the spring bolt with drive inclined plane complex cooperation inclined plane, the drive inclined plane is according to keeping away from press the orientation of splenium to being close to gradually the orientation slope of holding tank.

As an optimization of the utility model, the locating hole has been seted up on the spring bolt, thereby be connected with on the rotor arm be used for with thereby the locating hole is connected and is made the spring bolt is leaving the location platform of the position location of holding the groove.

As the utility model discloses a preferred, the location platform contain the primary standard and with the location head that the primary standard is connected, the rotor arm with be equipped with spring one between the primary standard.

As the utility model discloses a preferred, the bayonet socket has been seted up to the drive block bottom, be equipped with on the spring bolt and be used for the card to go into the latch of bayonet socket.

As the utility model discloses a preferred, the handrail arm include with the gradual change groove of contradicting to the main board side, the fluting degree of depth in gradual change groove is in the rotation direction of holding up the arm changes gradually.

As the utility model discloses a preferred, still contain spring two, two both ends of spring respectively with the driving block with the rotor arm is contradicted.

As the utility model discloses an it is preferred, still contain spring three, three both ends of spring respectively with the spring bolt with the rotor arm is contradicted.

A folding chair comprises a folding turnover mechanism suitable for a seat, a stool and a backrest, wherein the stool is connected with a stool arm, and the backrest is connected with a rotating arm.

As the utility model discloses a preferred, work as the spring bolt card is gone into when the holding tank, sit the bench with the handrail arm is parallel.

To sum up, the utility model discloses following beneficial effect has:

1. in the process of turning over the backrest of the seat, the seat legs do not turn over, the independence is kept, and the seat is suitable for seat commodities such as sofa chairs, rolling chairs and the like.

2. The angle of the seat and the backrest is locked in the using process of the seat, the seat is not overturned, and the safety and the stability are high.

3. When the seat needs to be folded, the seat is operated by manually operating the driving block by a user, and the operation is convenient and reliable.

4. When the seat is folded and needs to be opened and returned, the components such as the lock tongue and the driving block automatically rebound and return, manual operation is not needed, and convenience and rapidness are achieved.

Description of the drawings:

FIG. 1 is a schematic view of example 1;

FIG. 2 is a schematic view of the swing arm after concealing the panel;

FIG. 3 is a schematic view of the drive block and the deadbolt;

FIG. 4 is a schematic view of FIG. 2 after the drive block has been depressed;

FIG. 5 is a schematic diagram of the disengagement of the drive block and the deadbolt;

FIG. 6 is a schematic view of the positioning table and a first spring;

FIG. 7 is a schematic view of FIG. 1 after being folded over;

fig. 8 is a schematic view of the locking bolt in a free state.

In the figure, 11, a stool arm, 111, a receiving groove, 12, a rotating arm, 13, an armrest arm, 131, a gradual change groove, 14, an articulated arm, 2, a driving block, 21, a driving inclined plane, 22, a bayonet, 23, a pressing part, 3, a bolt, a matching inclined plane, 31, an insertion sheet, 32, a positioning hole, 33, a latch, 4, a positioning table, 41, a main table, 42, a positioning head, 5, a first spring, 6 and a second spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Embodiment 1, a folding chair comprises a seat and a back (not shown), both of which are identical to the back of a prior art seat, and the seat is provided with legs. The folding turnover mechanism is characterized by further comprising a folding turnover mechanism shown in figure 1, wherein the turnover mechanism adopts a four-link arm structure design, and specifically comprises a stool arm 11, a rotating arm 12, an armrest arm 13 and an articulated arm 14, and the four link arms are sequentially and rotatably connected.

The bench arm 11 is connected to the bench, and the swivel arm 12 is connected to the chair back, and the upper surface of the arm 13 serves as the armrest for the user. Therefore, during the folding process, the rotation of the rotating arm 12 relative to the arm 11 is the rotation of the chair back relative to the chair, and the legs are connected to the bottom of the chair, so that the legs and the chair back are independent and cannot move with the chair along with the rotation of the chair back.

In the present case, the seat has two states, namely a use state and a turnover state, which mainly result from the structure and the state of the bolt 3. The locking tongue 3 has three states, which are a locking state, a connecting state and a free state, and are specifically described below.

As shown in fig. 2 and 3, the latch 3 is slidably installed in the rotating arm 12, the lower portion of the latch 3 includes an insertion piece 31, and the upper portion of the bench arm 11 has a receiving groove 111. In fig. 2 and 3, the insertion piece 31 is inserted into the receiving groove 111, at this time, the latch 3 is in a locked state, the seat is in a use state, the latch 3 locks the relative angle between the rotary arm 12 and the bench arm 11, so that the rotary arm 12 cannot be rotated, the user has a problem in using the seat, and all the parts cannot be turned over.

As shown in fig. 3, the driving block 2 includes a pressing portion 23 and an inclined driving surface 21, and the latch bolt 3 also has an engaging surface (not shown) engaging with the inclined driving surface 21. The drive block 2 is also slidably connected to the pivot arm 12. When a user wants to fold the seat, the pressing portion 23 is pressed, the direction of the driving block 2 can be the width direction of the rotating arm 12, i.e. the driving block 2 moves to the left in fig. 3, and at this time, due to the two inclined surfaces of the driving inclined surface 21 and the matching inclined surface, the latch tongue 3 moves away from the receiving groove 111, i.e. the latch tongue 3 moves upward in fig. 3.

When the driving block 2 has been slid into position, as shown in fig. 4, with the insert piece 31 completely removed from the receiving slot 111, the seat is free, without locking, between the bench arm 11 and the swivel arm 12, and the seat is then brought into a tumbled state.

It should be noted that, as a preferred embodiment, in the process, the three components of the rotating arm 12, the latch 3 and the driving block 2 are kept relatively still, so as to avoid the random displacement of the latch 3 and the driving block 2. Specifically, as shown in fig. 5 and 6, the positioning table 4 is connected to the rotating arm 12. A first spring 5 is arranged between the positioning table 4 and the rotating arm 12. The bolt 3 is provided with a positioning hole 32, when the bolt 3 is jacked up and rises, the bolt 3 overcomes the elastic force of the first spring 5, the positioning head 42 enters the positioning hole 32, and the position of the bolt 3 is fixed and cannot be shifted. As shown in fig. 5, the latch tongue 3 is provided with a protruding latch 33, the lower surface of the driving block 2 is provided with a bayonet 22, and the latch 33 is latched into the bayonet 22 to fix and position the position of the driving block 2. At this time, the latch 3 is in the second state mentioned above, i.e., the connected state. In this state, the rotating arm 12 can rotate freely, and during the rotation, the driving block 2 and the latch 3 and the rotating arm 12 are kept relatively stationary and do not move relatively.

As shown in fig. 7, when the seat is turned to the right position, the extending angle of the rotating arm 12 is almost parallel to the extending angle of the arm 11, i.e. the backrest of the seat and the stool of the seat are almost parallel, and the folding ideal state is achieved.

When folded into this state, the third state of the bolt 3 described above, i.e. the free state, is automatically triggered.

Specifically, as shown in fig. 8, the arm 13 includes a tapered groove 131, and the groove depth of the tapered groove 131 changes in the circumferential direction. During the rotation of the rotating arm 12, the positioning table 4 rotates relatively in the same manner as the arm rest 13, and the side wall of the main table 41 of the positioning table 4 moves in the circumferential direction of the gradation groove 131.

Because the gradual change groove 131 has different groove depths, when a preset position is reached (generally, the position in fig. 7 is reached), the groove depth of the gradual change groove 131 reaches a shallower position, at this time, the arm support 13 overcomes the elastic force of the first spring 5, so that the positioning head 42 exits from the positioning hole 32, at this time, the position of the bolt 3 is no longer locked by the rotating arm 12, and the bolt 3 enters a free state.

At this time, it is often the case that the user wants to reopen the stool so that the stool is re-brought into the use state. The user operates the backrest to pivot, as shown in fig. 8, a third spring (not shown) having one end abutting against the pivot arm 12 and the other end abutting against the latch 3 gives the latch 3 an elastic force (downward direction of fig. 8) toward the arm 11 of the bench. When the user operates the backrest to rotate, the latch 3 slides circumferentially relative to the outer surface of the arm 11 of the stool in fig. 8, and when the latch slides to the position of the receiving groove 111, the latch 3 returns under the influence of the elastic force of the spring three, and the inserting piece 31 enters the receiving groove 111 again.

As shown in fig. 2, there is also a second spring 6, one end of the second spring 6 abutting against the rotating arm 12 and the other end abutting against the driving block 2, giving the driving block 2 an outward (to the right in fig. 2) force. When the insert 31 returns to the receiving slot 111, the latch 33 is also disengaged from the latch 22, the driving block 2 is no longer fixed by the latch tongue 3, and the driving block 2 is returned to the initial position by the elastic force of the second spring 6.

At this point, the entire chair is returned to the use position and the angle of the backrest relative to the stool is fixed.

Claims

1. A folding and overturning mechanism for seats, comprising a stool arm (11) and a rotating arm (12) rotatably connected to said stool arm (11), characterized in that: still contain with rotor arm (12) rotate the arm-supporting arm (13) of being connected and both ends respectively with arm-supporting arm (13) and with sit articulated arm (14) that bench arm (11) rotate to be connected, it is equipped with holding tank (111) on bench arm (11), sliding connection has spring bolt (3) on rotor arm (12), spring bolt (3) include and are used for moving into/shift out insert piece (31) of holding tank (111), still be connected with on rotor arm (12) and be used for the drive dog (2) that spring bolt (3) removed.

2. A folding and reclining mechanism for a seat as defined in claim 1, wherein: the driving block (2) comprises a pressing part (23) and a driving inclined surface (21), the lock tongue (3) is provided with a matching inclined surface matched with the driving inclined surface (21), and the driving inclined surface (21) is gradually close to the direction of the pressing part (23) according to the distance.

3. A folding and reclining mechanism for a seat as defined in claim 1, wherein: the locking bolt (3) is provided with a positioning hole (32), and the rotating arm (12) is connected with a positioning table (4) which is used for being connected with the positioning hole (32) so as to position the locking bolt (3) at a position away from the accommodating groove (111).

4. A folding and reclining mechanism for a seat as defined in claim 3, wherein: the positioning table (4) comprises a main table (41) and a positioning head (42) connected with the main table (41), and a first spring (5) is arranged between the rotating arm (12) and the main table (41).

5. A folding and reclining mechanism for a seat as defined in claim 4, wherein: bayonet socket (22) have been seted up to drive block (2) bottom, be equipped with on spring bolt (3) and be used for the card income bayonet socket (22) latch (33).

6. A folding and reclining mechanism for a seat as defined in claim 4, wherein: the armrest arm (13) comprises a gradual change groove (131) which is abutted against the side surface of the main table (41), and the slotting depth of the gradual change groove (131) is gradually changed in the rotating direction of the armrest arm (13).

7. A folding and reclining mechanism for a seat as defined in claim 6, wherein: the two-end-drive mechanism further comprises a second spring (6), and two ends of the second spring (6) are respectively abutted against the drive block (2) and the rotating arm (12).

8. A folding and reclining mechanism for a seat as defined in claim 6, wherein: the spring bolt is characterized by further comprising a third spring, wherein two ends of the third spring are respectively abutted against the bolt (3) and the rotating arm (12).

9. A folding chair incorporating a folding and reclining mechanism for a seat as claimed in any one of claims 1 to 8, wherein: the folding stool comprises a stool and a backrest, wherein the stool is connected with a stool arm (11), the backrest is connected with a rotating arm (12), and chair legs are connected below the stool.

10. A folding chair as claimed in claim 9, wherein: when the lock tongue (3) is clamped into the accommodating groove (111), the stool is parallel to the armrest arm (13).