CN210095171U - Chair leg extending and connecting structure - Google Patents

Abstract

A chair leg extension connection structure is used to be arranged on a chair leg. The chair leg extension connection structure includes a connection piece, a bottom plate and a connection part. One end of the connection piece is connected to the bottom plate, and the connection part is arranged at the other end of the connection piece. The connection part is used to be fixed to the chair leg. In this way, the utility model can effectively increase the support force of the chair, prevent the chair from directly falling backward due to unstable center of gravity, and avoid the situation that the user is injured.

Description

Chair foot extension connection structure

technical field

The utility model relates to an extension connection structure of a chair foot, in particular to an extension connection structure of the chair foot which is arranged on the chair foot of a folding seat and increases the supporting force of the chair foot to prevent the seat from tilting backward.

Background technique

The folding seat is a kind of chair that can be folded and stored. When not in use, the occupied space can be reduced by folding the folding seat, which is convenient for storage and transportation.

Figure 1 is a side view of a conventional folding seat. As shown in FIG. 1, the existing folding seat includes a front leg frame 90, a seat cushion 92, and a rear leg frame 93. The front leg frame 90 includes a seat back 91; And the front foot frame 90 is pivotally connected with the seat cushion 92, so that the existing folding seat has the characteristics of being turnable and foldable for storage.

However, the existing folding seat has the problem of offset of the center of gravity. It can be seen from the side view of the existing folding seat that the top of the seat back 91 of the existing folding seat has a position A, and the position A extends vertically to the ground 85 There is a position C, and there is a distance D between the position C and the position B of the rear leg frame 93, so that the balance point of the center of gravity of the existing folding seat will fall on the position B of the rear leg frame 93; when the user sits on the folding seat, If the user leans back slightly, the center of gravity may become unstable and the user may lean backward.

Furthermore, another existing folding seat has a seat cushion 92 with a resilient structure. When the user leaves the seat cushion 92, the seat cushion 92 will rebound and fold. In the case of sitting down, due to the unstable center of gravity, the person and the chair will fall back directly, causing injury to the user.

Utility model content

The main purpose of the present utility model is to provide an extension connection structure of the chair feet, which is arranged on the chair feet of the folding seat to increase the supporting force of the chair feet to prevent the seat from tilting backwards.

In order to achieve the aforementioned purpose, the present invention provides an extension connection structure of a chair leg, which is arranged on a chair leg, and the extension connection structure of the chair leg includes a connecting piece, a bottom plate and a connecting portion.

A connecting piece, a bottom plate and a connecting portion, one end of the connecting piece is connected with the bottom plate, the connecting portion is arranged on the other end of the connecting piece, and the connecting portion is used for fixing with the chair legs.

In an embodiment of the present invention, the extension connection structure of the chair leg further includes a pin, and the connection portion further includes a connection piece, a first extension piece and a second extension piece, and the first extension piece and the second extension piece are respectively provided On both sides of the connecting piece, each includes a hole, and the plug penetrates the hole, so that the chair leg is fixed between the connecting piece, the first extension piece, the second extension piece and the plug pin.

Preferably, the plug includes a wrench portion and a pin portion, the wrench portion is disposed at one end of the pin portion, and the other end of the pin portion is respectively penetrated through the hole of the first extension piece and the hole of the second extension piece.

Wherein, there is an angle between the wrench portion and the pin portion.

In an embodiment of the present invention, the plug further includes a positioning portion protruding from the pin portion, the first extension piece has a first insertion hole, and the first insertion hole is communicated with the hole of the first extension piece. When passing through the hole of the first extension piece, the positioning part can be passed through the first insertion hole, and the wrench part of the plug is attached to one side of the first extension piece, and the positioning part and the other side of the first extension piece have a first There is a second distance between one end of the pin portion and the side of the second extension piece facing the first extension piece, and the length of the second distance is greater than the length of the first distance.

Preferably, the second extension piece has a second insertion hole, the second insertion hole is communicated with the hole of the second extension piece, and when the pin passes through the hole of the second extension piece, the positioning portion can pass through the second insertion hole, And the spanner part of the pin is attached to one side of the second extension piece, the positioning part has a third distance from the other side of the second extension piece, and one end of the pin part and the second extension piece face the side of the first extension piece There is a fourth distance, and the length of the fourth distance is greater than the length of the third distance.

Preferably, the first extension piece and the second extension piece are respectively arranged perpendicular to the connecting piece.

In an embodiment of the present invention, the connecting piece and the bottom plate have an included angle, and the included angle is the angle between the chair foot and the ground.

In an embodiment of the present invention, the bottom plate includes a rib, which is protruded from the middle section of the bottom plate.

In an embodiment of the present invention, the bottom plate includes a first side and a second side, and the connecting piece is disposed on the first side of the bottom plate.

In an embodiment of the present invention, the bottom plate includes a first side and a second side, and the connecting piece is disposed on the second side of the bottom plate.

The utility model has the effect that the connecting part is connected with the chair leg, and the supporting force is increased through the connecting piece and the bottom plate to support the weight of the folding seat and prevent the seat from tilting backward due to the unstable center of gravity.

Furthermore, when the user sits without noticing the rebound of the seat cushion, the user will not be directly tilted backward with the seat due to the unstable center of gravity, thereby causing injury to the user.

Description of drawings

Figure 1 is a side view of an existing folding seat;

FIG. 2 is a perspective combined view of the extension connection structure of the chair legs according to the first embodiment of the present invention;

3 is a perspective exploded view of the extension connection structure of the chair foot according to the first embodiment of the present invention;

4 is a side view of the extension connection structure of the chair foot according to the first embodiment of the present invention;

Figure 5, Figure 6, Figure 7 are respectively schematic diagrams of the first installation method of the extension connection structure of the chair foot according to the first embodiment of the present invention;

8 is a schematic diagram of a second installation method of the extension connection structure of the chair foot according to the first embodiment of the present invention;

9 is a side view of the second installation method of the extension connection structure of the chair foot according to the first embodiment of the present invention;

10 is a perspective combined view of the extension connection structure of the chair legs according to the second embodiment of the present invention;

Figure 11 is a schematic diagram of the first embodiment and the second embodiment of the present invention, the extension connecting structure of the legs of the chair are respectively disposed on the two legs of the rear leg frame; and

12 is a schematic diagram of a folding seat in which a user sits on the legs of the rear seat frame and is provided with the extension connection structure of the legs according to the first embodiment and the second embodiment of the present invention.

Among them, the reference numerals are described as follows:

10, 10A connecting piece

20, 20A bottom plate

21 Ribs

22, 22A first side

23, 23A Second side

30, 30A connector

31 connecting piece

32 The first extension

321 Holes

322 first jack

33 Second extension

331 Holes

332 second jack

40 pins

41 Wrench

42 Pins

43 Positioning part

44 First distance

45 Second distance

46 Third distance

47 Fourth distance

80 legs

85 Ground

90 Front stand

91 Backrest

92 Chair cushions

93 Rear stand

A, B, C positions

D distance

θ included angle

Detailed ways

The embodiments of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement it after studying the description.

FIG. 2 and FIG. 3 are respectively a three-dimensional combined view and a three-dimensional exploded view of the extension connection structure of the chair foot according to the first embodiment of the present invention. As shown in FIG. 2 and FIG. 3 , the present invention provides an extension connection structure of a chair leg, which is used to be arranged on one of the chair legs 80 (shown in FIG. 5 ) of the rear leg frame 93 , and the extension connection structure of the chair leg includes a connection The sheet 10 , a bottom plate 20 and a connecting portion 30 . The following is a detailed explanation of each part.

One end of the connecting piece 10 is connected to the bottom plate 20, and the connecting portion 30 is arranged on the other end of the connecting piece 10 and the bottom plate 20; , to increase the strength of the bottom plate 20 . In the first embodiment of the present invention, the bottom plate 20 includes a first side 22 and a second side 23 , and the connecting piece 10 is disposed on the first side 22 of the bottom plate 20 .

The connecting portion 30 includes a connecting piece 31 , a first extending piece 32 and a second extending piece 33 ; the first extending piece 32 and the second extending piece 33 are respectively disposed on two sides of the connecting piece 31 . Preferably, the first extension piece 32 and the second extension piece 33 are respectively arranged perpendicular to the connecting piece 10, so that there is a distance between the first extension piece 32 and the second extension piece 33 to accommodate a chair leg 80 (shown in Figure 5). Wherein, in the first embodiment of the present invention, the first extension piece 32 includes a first insertion hole 322 and a hole 321, the first insertion hole 322 communicates with the hole 321 of the first extension piece 32; Sheet 33 includes a hole 331 .

In the first embodiment of the present invention, the extension connection structure of the chair leg further includes a plug 40 , and the plug 40 includes a wrench portion 41 and a pin portion 42 ; The outer diameter of the pin portion 42 is smaller than the hole 321 of the first extension piece 32 and the hole 331 of the second extension piece 33 , so that the pin portion 42 can pass through the hole 321 of the first extension piece 32 and the hole of the second extension piece 33 respectively. 331.

Wherein, in the first embodiment of the present invention, the plug 40 includes a positioning portion 43 , which is protruded from the pin portion 42 . When the pin portion 42 passes through the hole 321 of the first extension piece 32 , the positioning portion 43 can be inserted by the first plug. Holes 322 pass through.

FIG. 4 is a side view of the extension connecting structure of the chair foot according to the first embodiment of the present invention. As shown in FIG. 4 , when the pin part 42 and the positioning part 43 of the plug 40 pass through the hole 321 and the first insertion hole 322 of the first extension piece 32 respectively, the wrench part 41 of the plug pin 40 will fit on the first extension piece At this time, the positioning portion 43 and the other side of the first extension piece 32 have a first distance 44, and one end of the pin portion 42 and the side of the second extension piece 33 facing the first extension piece 32 have a distance 44. The second distance 45 ; preferably, the length of the second distance 45 is greater than the length of the first distance 44 .

In the first embodiment of the present invention, there is an angle between the wrench portion 41 and the pin portion 42 , so that one end of the pin portion 42 passes through the hole 321 of the first extension piece 32 and the hole of the second extension piece 33 in sequence. 331, the wrench part 41 can be attached to one side of the first extension piece 32; the positioning effect of the plug 40 is achieved through the wrench part 41, so that the plug 40 can be positioned in the hole 321 of the first extension piece 32 and the second extension inside the hole 331 of the sheet 33 .

Preferably, the angle between the wrench portion 41 and the pin portion 42 may be 90°, however, the angle between the wrench portion 41 and the pin portion 42 is not limited to this.

It is worth mentioning that, in the first embodiment of the present invention, the connecting piece 10 and the bottom plate 20 have an included angle θ, and the included angle θ is the angle between the chair foot 80 and the ground 85, so that the connecting portion 30 can be connected to the chair. Pin 80 is connected.

FIG. 5 , FIG. 6 , and FIG. 7 are schematic diagrams of the first installation method of the extension connection structure of the chair legs according to the first embodiment of the present invention, respectively. As shown in FIGS. 5 , 6 and 7 , in the first installation method of the present invention, the chair leg 80 is firstly arranged between the connecting piece 31 , the first extending piece 32 and the second extending piece 33 , and then Align the pin 40 with the hole 321 of the first extension piece 32, align the positioning portion 43 with the first insertion hole 322 of the first extension piece 32, and insert it, so that the pin portion 42 and the positioning portion 43 pass through the hole 321 and the first hole 321 respectively. After the insertion hole 322 is inserted, one end of the pin portion 42 passes through the hole of the second extension piece 33 , so that the chair leg 80 can be fixed between the connecting piece 31 , the first extension piece 32 , the second extension piece 33 and the pin 40 . , to achieve a fixed effect.

At this time, the user can rotate the angle of the latch 40 so that the positioning portion 43 is not aligned with the first insertion hole 322 . When the plug 40 is pulled, the positioning portion 43 abuts against the other side of the first extension piece 32 , so that the positioning portion 43 cannot move out of the first insertion hole 322 , thereby preventing the plug 40 from falling off the connecting portion 30 . effect.

8 and 9 are a schematic diagram and a side view of the second installation method of the extension connection structure of the chair foot according to the first embodiment of the present invention, respectively. As shown in FIG. 8 and FIG. 9 , in the second installation method of the present invention, the difference from the first installation method is that the second extension piece 33 of the connecting portion 30 further includes a second insertion hole 332 . The two insertion holes 332 communicate with the holes 331 of the second extension piece 33 .

The user can choose to insert the latch 40 through the first extension piece 32 and the second extension piece 33 from the direction of the second extension piece 33 . Specifically, during assembly, by passing the plug 40 through the hole 331 of the second extension piece 33, the positioning portion 43 can pass through the second insertion hole 332, and the wrench portion 41 of the plug 40 will fit on the second extension At this time, there is a third distance 46 between the positioning portion 43 and the other side of the second extension piece 33, and one end of the pin portion 42 and the side of the second extension piece 33 facing the first extension piece 32 have a A fourth distance 47 , and the length of the fourth distance 47 is greater than the length of the third distance 46 .

At this time, the user can make the positioning portion 43 not align with the second insertion hole 332 by rotating the angle of the latch 40 . When the plug 40 is pulled, the positioning portion 43 will abut against the other side of the second extension piece 33 , so that the positioning portion 43 cannot move out of the second insertion hole 332 , thereby preventing the plug 40 from falling off the connecting portion 30 . effect.

In the second installation method of the present invention, the second insertion hole 332 is formed in the second extension piece 33 , so that the user can insert the pin 40 through the hole 331 of the second extension piece 33 and the first extension piece 32 from different directions. The hole 321 is formed, so that the chair leg 80 is fixed between the connecting piece 31, the first extension piece 32, the second extension piece 33 and the plug 40, so as to achieve the effect of positioning.

FIG. 10 is a perspective combined view of the extension connection structure of the chair legs according to the second embodiment of the present invention. As shown in FIG. 10 , in the second embodiment of the present invention, the difference from the first embodiment is that the bottom plate 20A includes a first side 22A and a second side 23A, and the connecting piece 10A is disposed on the first side of the bottom plate 20A. The two sides 23; the connecting portion 30A is arranged on the other end of the connecting piece 10A connected to the bottom plate 20A. By arranging the connecting piece 10A on the second side 23A of the bottom plate 20A, the leg extension connecting structure of the second embodiment of the present invention can be assembled with another leg 80 of the rear leg frame 93 .

11 is a schematic diagram of the first embodiment and the second embodiment of the present invention, the extension connection structure of the chair legs are respectively arranged on the two chair legs of the rear leg frame, and FIG. Schematic diagrams of the folding seats of the first embodiment and the second embodiment of the utility model with the extension connection structure of the chair legs. As shown in FIGS. 11 and 12 , specifically, the extension connection structure of the chair legs of the first embodiment of the present invention is arranged on the chair leg 80 of the right leg of the rear leg frame 93 , and the chair of the second embodiment of the present invention is The foot extension connection structure is arranged on the chair foot 80 of the left foot of the rear leg frame 93, so as to achieve a better effect of supporting the seat; and through the support of the chair foot extension connection structure of the present invention, when the user rides It will not cause the user to be injured due to the user's slight leaning back or the unstable center of gravity, which will cause the user to fall back directly with the chair.

The effect of the present invention is that the connecting portion 30 is connected with the chair leg 80, and the supporting force is increased through the connecting piece 10 and the bottom plate 20 to support the weight of the folding seat and prevent the seat from tilting backward due to the unstable center of gravity The problem.

Furthermore, when the user sits without noticing the rebound of the seat cushion 92, the user will not be directly tilted backwards due to the unstable center of gravity, thereby causing injury to the user.

The above is only a preferred embodiment for explaining the present invention, and is not intended to limit the present invention in any form. Therefore, any modification or modification of the present invention made under the same creative spirit Changes should still be included in the intended protection scope of the present invention.

Claims (11)

1. The utility model provides a chair foot extends connection structure which characterized in that for set up in a chair foot, this chair foot extends connection structure includes:

one end of the connecting piece is connected with the bottom plate, the connecting part is arranged at the other end of the connecting piece, and the connecting part is used for being fixed with the chair leg.

2. The chair leg extending and connecting structure of claim 1, further comprising a pin, wherein the connecting portion further comprises a connecting piece, a first extending piece and a second extending piece, the first extending piece and the second extending piece are respectively disposed on two sides of the connecting piece and each of the first extending piece and the second extending piece comprises a hole, and the pin is inserted through the holes so as to fix the chair leg among the connecting piece, the first extending piece, the second extending piece and the pin.

3. The chair leg extending and connecting structure as claimed in claim 2, wherein the pin comprises a wrench portion and a pin portion, the wrench portion is disposed at one end of the pin portion, and the other end of the pin portion is respectively inserted into the hole of the first extending piece and the hole of the second extending piece.

4. The chair leg extending and connecting structure as claimed in claim 3, wherein the trigger portion and the pin portion have an angle therebetween.

5. The chair leg extending and connecting structure as claimed in claim 3, wherein the pin further comprises a positioning portion protruding from the pin portion, the first extending piece has a first insertion hole communicating with the hole of the first extending piece, when the pin passes through the hole of the first extending piece, the positioning portion can pass through the first insertion hole, the wrench portion of the pin engages one side of the first extending piece, the positioning portion has a first distance from the other side of the first extending piece, one end of the pin portion has a second distance from one side of the second extending piece facing the first extending piece, and the length of the second distance is greater than the length of the first distance.

6. The chair leg extending and connecting structure as claimed in claim 5, wherein the second extending piece has a second insertion hole, the second insertion hole is communicated with the hole of the second extending piece, when the bolt passes through the hole of the second extending piece, the positioning portion can pass through the second insertion hole, the wrench portion of the bolt is engaged with one side of the second extending piece, the positioning portion has a third distance from the other side of the second extending piece, one end of the pin portion has a fourth distance from one side of the second extending piece facing the first extending piece, and the length of the fourth distance is greater than that of the third distance.

7. The chair leg extending and connecting structure as claimed in claim 2, wherein the first extending piece and the second extending piece are respectively disposed perpendicular to the connecting piece.

8. The chair leg extending and connecting structure as claimed in claim 1, wherein the connecting piece and the bottom plate have an included angle, and the included angle is an angle between the chair leg and the ground.

9. The foot extension coupling structure according to claim 1, wherein the base plate includes a rib portion rising from a middle portion of the base plate.

10. The chair leg extending structure as claimed in claim 1, wherein the base plate includes a first side and a second side, the connecting piece being disposed on the first side of the base plate.

11. The chair leg extending structure as claimed in claim 1, wherein the base plate includes a first side and a second side, the connecting piece being disposed on the second side of the base plate.

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