TWM521960U - Chair frame of foldable chair - Google Patents

Description

Folding chair frame

The present invention relates to a chair frame, and more particularly to a chair frame for a folding chair.

Referring to Figures 1 and 2, a conventional folding chair frame includes a seat seating unit 90 and a seat back unit 91. The seat seating unit 90 includes two left and right spaced leg sets 92 and two seat bars 93 pivotally coupled to the sets of leg sets 92, respectively. The seat back unit 91 includes two side bars 94 extending up and down respectively and having a bottom end pivotally connected to the rear ends of the seat bars 93, and two connecting rods 95 respectively connected between the side bars 94 and spaced apart from each other. Each of the links 95 has a coupling block 951 and two rods 952 pivotally connected between the side bars 94 and the coupling block 951, respectively.

The rods 952 can be pivoted about the joint block 951 such that the links 95 can be switched between an extended state as shown in FIG. 1 and a folded state as shown in FIG. In the extended state of FIG. 1, the rods 952 of the links 95 extend in the left and right directions, respectively.

The rods 952 of the connecting rods 95 are gathered around the joint block 951 so that when the connecting rods 95 are in the folded state of FIG. 2, the opposite ends of the connecting rods 95 are connected. The side bars 94 are facing each other The seat bars 93 pivotally connected to the side bars 94 and the leg sets 92 pivotally connected to the seat bars 93 are adjacent to each other.

Since the side bars 94 of the seat back unit 91 are joined together only by the links 95, the foregoing design will cause the side bars 94 and the links 95 to easily sway relative to each other. Therefore, the chair frame of the conventional folding chair has a structure that is less stable. When the user rides on the chair, the chair unit 91 that is easy to shake will cause the user's back to be abutted. Comfortable, so there is still room for improvement.

Accordingly, it is an object of the present invention to provide a frame for a structurally stable folding chair.

Thus, the chair frame of the novel folding chair comprises a seat seating unit, a seat back unit, and at least one fixing member.

The seat back unit is unfolded and folded relative to the seat seating unit, and includes two side rods respectively pivotally connected to the seat unit, and a first link connected between the side rods. The fixing member is connected between one of the side bars and the first link, so that the side bar connected by the fixing member and the first link do not shake each other.

The utility model has the advantages that the fixing member is connected between one of the side bars and the first connecting rod, so that the first connecting rod and the side bar connected by the fixing member do not shake each other, so that The structure of the seat back unit is relatively stable, and is more comfortable when the user's back rests on the seat back unit.

1‧‧‧ Chair seat unit

11‧‧‧ Chair set

111‧‧‧First leg

112‧‧‧Second leg

12‧‧‧ seat rod

2‧‧‧back unit

21‧‧‧ sidebar

22‧‧‧ first link

221‧‧‧ first combined block

222‧‧‧First body

223‧‧‧First pivotal

224‧‧‧First stop piece

23‧‧‧Second connecting rod

231‧‧‧Second junction block

232‧‧‧Second body

233‧‧‧Second pivotal

234‧‧‧Second stop

24‧‧‧ Third Link

3‧‧‧Fixed parts

31‧‧‧Fixed Department

311‧‧‧Link card slot

32‧‧‧Snap Department

321‧‧‧ snap groove

81‧‧‧First support

82‧‧‧second support

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a rear perspective view of a conventional folding chair frame, showing two of the frame The connecting rods are all in an extended state; FIG. 2 is a rear view of the frame of the conventional folding chair, which shows that the connecting rods are all in a folded state; FIG. 3 is a first part of the frame of the folding chair of the present invention. A rear perspective view of an embodiment in which the chair frame is used in conjunction with a first support member and a second support member, and a seat back unit of the seat frame is shown in a deployed position; FIG. 4 is the first A rear view of the embodiment; FIG. 5 is a rear view similar to FIG. 4, in which the seat back unit is in a collapsed position; FIG. 6 is a side view of the first embodiment, showing that the seat frame is located in one piece Figure 7 is a rear perspective view of a second embodiment of the chair frame of the novel folding chair, wherein the frame frame is used in conjunction with the first support member and the second support member, and the display is The seat back unit is in the unfolded position ; FIG. 8 is a side view of the second embodiment; and FIG. 9 is a side view similar to Figure 8, the seatback in FIG collapsed position of the unit is located.

Referring to FIG. 3, a first embodiment of the chair frame of the present invention is one of the members of a folding chair, and the folding chair further comprises a frame provided on the frame. A first support member 81 for the buttocks of the user, and a second support member 82 disposed on the seat frame for the user's back to rest. In this embodiment, the first support member 81 and the second support member 82 are in the form of a cloth, but in practice, the first support member 81 and the second support member 82 may also be plates or other forms. , no need to limit.

In this embodiment, the chair frame includes a seat unit 1 for mounting the first support member 81, a seat back unit 2 for mounting the second support member 82 and being expandable and retractable relative to the seat unit 1, and Two fixing members 3.

The chair seating unit 1 includes two left and right spaced leg sets 11 and two seat bars 12 that are spaced apart from each other and supported on opposite sides of the first support member 81 and assembled to the sets of legs 11 respectively. Each of the sets of legs 11 has a first leg 111 and a second leg 112 pivotally connected to each other at one end, and each of the seat bars 12 is pivotally connected to the first leg 111 of the corresponding leg set 11 and Two chairs and 112 feet.

The seatback unit 2 includes two side bars 21 that are spaced apart from each other on the opposite sides of the second support member 82 and are respectively pivotally connected to the rear ends of the seat bars 12 at their bottom ends, respectively connected to the side bars A first link 22 and a second link 23 spaced between and spaced apart from each other, and a third link 24 extending upwardly and downwardly between the first link 22 and the second link 23.

The first connecting rod 22 has a first connecting block body 221 at the center, and two first rod bodies 222 pivotally connected between the side rods 21 and the first joint block body 221 respectively. .

The first rod bodies 222 can respectively be the first joint block body 221 is the center pivot. The first coupling block 221 has two first pivoting portions 223 for pivotally connecting the first rods 222. Each of the first pivoting portions 223 has a first pivoting portion 222 for the first rod body 222. The first stop piece 224 is abutted.

The second link 23 has a second joint block 231 located at the center, and two second rods 232 pivotally connected between the side rods 21 and the second joint block 231 respectively. .

The second rod bodies 232 can be pivoted about the second joint block 231. The second coupling block 231 has two second pivoting portions 233 for pivotally connecting the second rods 232. Each of the second pivoting portions 233 has a second pivoting portion 232 for the second rod body 232. The second stop piece 234 is abutted.

The third link 24 is connected between the first joint block 221 and the second joint block 231 in an up-and-down manner.

The fixing members 3 are respectively connected between the side rods 21 and the first connecting rods 22, and each of the fixing members 3 includes a first rod body 222 fixedly assembled to the first connecting rod 22. The fixing portion 31 and a latching portion 32 for detachably engaging one of the side bars 21. Each of the latching portions 32 has an engaging groove 321 for the corresponding side bar 21 to be detachably engaged.

Referring to Figures 4 and 5, the seatback unit 2 is switchable between a deployed position as shown in Figure 4 and a collapsed position as in Figure 5.

Referring to Figures 5 and 6, in the retracted position, the first rods 222 and the second rods 232 are brought together to each other such that the first links 22 and The second links 23 are respectively bent, and the first rods 222 and the second rods 232 are brought toward the third link 24, the side rods 21, the seat rods 12 and the chairs The leg groups 11 are close to each other, and the latching portions 32 of the fixing members 3 are not engaged with the side bars 21 at this time. The seat back unit 2 is adjacent to the seat seating unit 1, and the seat frame is in an integrated folded state.

Referring to FIGS. 3, 4, and 5, when the folding chair is required to be used, the first rod body 222 and the second rod body 232 are mutually deployed, so that the first link 22 and the second link 23 are respectively left and right. Extending, and during the unfolding of the first rod body 222 and the second rod body 232, the side rods 21, the seat rods 12 and the leg sets 11 are away from each other, the fixing members The latching portion 32 of the third portion and the side rods 21 are also moved closer to each other until the first rods 222 are relatively unfolded to the first rods 222 respectively against the first blocking pieces 224. When the engaging grooves 321 respectively engage the side bars 21, the side bars 21 are engaged. At this time, the fixing members 3 are respectively connected between the side bars 21 and the first link 22, and the seat back unit 2 is switched to the deployed position. At this time, the seat back unit 2 is away from the seat seating unit 1, and the seat frame is in an unfolded state as a whole.

When the frame is required to be folded, the first rods 222 and the second rods 232 are pivoted together, and the latching portions 32 of the fixing members 3 are respectively facing the sides. The rod 21 moves away from the side bars 21. Until the first rod body 222 and the second rod body 232 are gathered from each other, the side rods 21, the seat rods 12 and the leg sets 11 are close to each other, so that the seat back unit 2 can be switched to The folding position, at which time the chair seating unit 1 gradually approaches the seat back unit 2 until the seat back unit 2 is closed, the chair frame is This is the overall collapsed state.

In use, when the seat back unit 2 is in the deployed position, since the fixing members 3 are respectively connected between the side bars 21 and the first link 22, the side bars 21 and the first link are The structure of the seat back unit 2 of the present embodiment is relatively stable.

Through the foregoing design, the seat back unit 2 of the present embodiment can provide a stable support when the user rides thereon, so that when the user's seat is placed on the seat back unit 2 of the embodiment, it can be felt. Comfortable and secure.

In this embodiment, the number of the fixing members 3 is two, but in practice, the number of the fixing members 3 may be more, or the chair frame may only include one mounted on the chair. A fixing member 3 on one side of the back unit 2.

In addition, in the implementation, the fixing positions of the fixing portion 31 and the locking portion 32 of each fixing member 3 are interchangeable, that is, the fixing portion 31 is fixedly assembled on the side bar 21, and the fastening portion is 32 is provided for the first rod body 222 to be detachably engaged.

Referring to FIG. 7, a second embodiment of the chair frame of the present folding chair is substantially the same as the first embodiment, and the difference between the two is that the structure of the seat back unit 2 and the seat back unit 2 are opposite to each other. The manner in which the seat seating unit 1 is unfolded and folded, and the manner in which the fixing members 3 are disposed on the seat back unit 2.

In this embodiment, the fixing members 3 are respectively detachably connected between the first connecting rod 22 and the side rods 21, specifically, each fixing member 3 The fastening portions 31 each have a link slot 311 for the corresponding first link 22 to be detachably engaged.

Referring to FIG. 8 and FIG. 9 , the seat back unit 2 is movable relative to the seat unit 1 between a deployed position and a folded position. In the deployed position, the seat back unit 2 is away from the seat unit 1 . In this case, the fixing members 3 are respectively attached to the two ends of the first connecting rod 22 and the side rods 21, and the engaging grooves 321 are respectively engaged with the side rods 21, and the same The connecting rod slot 311 is respectively engaged with the opposite ends of the first connecting rod 22, and in the folded position, the seat back unit 2 is adjacent to the seat sitting unit 1, and the fixing member 3 and the seat back unit 2 at this time It is in a detached state.

In summary, the seat back unit 2 in the deployed position is engaged by the fixing members 3, so that the side bars 21 and the first link 22 do not sway with each other, and the structure of the seat frame is increased. The stability is more comfortable when the user rests on the back unit 2, so that the purpose of the present invention can be achieved.

However, the above description is only for the embodiments of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent changes and modifications made by the present patent application scope and the contents of the patent specification are still It is within the scope of this new patent.

1‧‧‧ Chair seat unit

11‧‧‧ Chair set

111‧‧‧First leg

112‧‧‧Second leg

12‧‧‧ seat rod

2‧‧‧back unit

21‧‧‧ sidebar

22‧‧‧ first link

221‧‧‧ first combined block

222‧‧‧First body

223‧‧‧First pivotal

224‧‧‧First stop piece

23‧‧‧Second connecting rod

231‧‧‧Second junction block

232‧‧‧Second body

233‧‧‧Second pivotal

234‧‧‧Second stop

24‧‧‧ Third Link

3‧‧‧Fixed parts

31‧‧‧Fixed Department

32‧‧‧Snap Department

321‧‧‧ snap groove

81‧‧‧First support

82‧‧‧second support

Claims (10)

The chair frame of the folding chair comprises: a seat seating unit; a seat back unit that can be unfolded and folded relative to the seat seating unit, and includes two side bars pivotally connected to the seat seating unit, and a connection a first link between the side bars; and at least one fixing member connected between one of the side bars and the first link, so that the side bar connected by the fixing member and the first A link does not shake each other. A chair frame for a folding chair according to claim 1, wherein the fixing member is detachably coupled to the first link and the corresponding side bar. The seat frame of the folding chair according to claim 1, wherein the fixing member has a fixing portion and a locking portion, and the fixing portion is fixedly assembled on the first connecting rod, and the locking portion is One of the equal side bars is releasably engaged. The chair frame of the folding chair according to claim 3, wherein the first link has a first coupling block, and the two are respectively pivotally connected to the side bars and the first coupling block at both ends thereof. And a first rod body pivotally centered on the first joint block, wherein the seat back unit can be deployed in a deployed position in which the first rods are mutually extended and the side rods are moved away from each other, and Converting between the first rods and a folding position in which the side rods are moved closer to each other; in the unfolding position, the fixing member is connected between one of the side rods and one of the first rods . The chair frame of the folding chair according to claim 4, wherein the fixing member is fixed The joint is fixedly assembled on one of the first rods, the buckle portion of the fixing member is detachably engaged with one of the side rods; and the first rod body is relatively unfolded to the deployed position of the seat back unit When the buckle portion is moved closer to the side rod to engage the side rod; when the first rod body is relatively folded to the seat back unit, the buckle portion will face the side The rod moves away from the side rail. The chair frame of the folding chair according to claim 4, wherein the first coupling block has two first pivoting portions respectively for pivoting the first rods, and each pivoting portion has a first a stop piece; when the seat back unit is in the deployed position, the first rods are relatively unfolded and respectively abut against the first stop pieces. The chair frame of the folding chair of claim 4, wherein the seat back unit further includes a second link connected between the side bars, the first link being spaced apart from the second link, The second link has a second joint block, and the two ends are respectively pivotally connected between the side bars and the second joint block, and respectively can be pivoted around the second joint block The second rod body is disposed. When the seat back unit is in the deployed position, the second rod bodies are mutually deployed. When the seat back unit is in the folded position, the second rod bodies are engaged with each other. The chair frame of the folding chair according to claim 7, wherein the seat back unit further comprises a third link connected between the first joint block and the second joint block, the seat back unit is located When the position is folded, the second rods are brought closer to the third link. A chair frame for a folding chair according to any one of claims 1 to 8, comprising two The fixing members are respectively connected between the side bars and the first link. The chair frame of the folding chair according to claim 1, wherein the seat seating unit comprises two left and right sets of chair legs, and two seat bars respectively pivotally connected to the leg sets and spaced apart from each other. The leg sets each have a first leg and a second leg that are pivotally connected to each other.