JP3114088U - Framework of folding chair and folding chair provided with the same - Google Patents

Abstract

An object of the present invention is to provide a folding chair in which the connection between a support device and a frame body is unlikely to damage the support device, and the durability is improved.
Near the upper ends of both left and right bars of a front leg frame, a first sleeve is slidably mounted between a predetermined open leg position above and a predetermined close leg position below. The connection between the vicinity of the upper ends of the left and right bars of the front leg frame 41 and the vicinity of the upper portion of the frame body 31 is performed by pivotal connection between the first sleeves 43 and the frame body 31. When the apparatus 4 is in the open leg state, the left and right bars of the front leg frame 41 slide to the first sleeve 43 corresponding to the predetermined open leg position above and are formed at the predetermined open leg position. A foldable chair that can be engaged with a second engagement member 431 formed on a first sleeve 43 by a first engagement member 411 to maintain an open leg state.
[Selection] Figure 2

Description

  The present invention relates to a framework of a folding chair and a folding chair including the same.

  As an example of this type of folding chair, as shown in FIG. 1, a seat body 1 having a frame 10 that is always inclined forward and backward, and a seat 11 mounted on the upper slope of the frame 10, A frame-like front leg frame 21 having both bars and a rear leg frame 22 are pivotally connected so that the left and right bars cross each other freely, and the left and right bars of the front leg frame 21 are connected to each other. It is preferable that the support device 2 is connected to the upper part of the frame body 10 near the upper end, and the right and left bars of the rear leg frame 22 are connected to the lower part of the frame body 10 near the upper end thereof. It can be seen.

  Specifically, the connection between the vicinity of the upper ends of the left and right rods of the rear leg frame 22 made of pipe and the vicinity of the lower portion of the frame body 10 is performed by pivot attachment. A slide rod 211 is slidably inserted inside the pipe near the upper ends of the left and right rods of the front leg frame 21, and a slide groove is formed at a position corresponding to the slide rod 211 on the wall of the left and right rods of the front leg frame 21. 212 and a through hole 213 are provided. Further, a slider 214 having one end fixed to the slide rod 211 and the other end connected to the frame body 10 through the slide groove 212 is slidably attached to the slide groove 212. A locking pin 215 is provided inside the slider 214 so as to protrude from the wall surface of the slide rod 211 above the slider 214.

  In the folding chair as described above, when the support device 2 is in the open leg state, the slider 214 slides together with the frame body 10 to the uppermost end of the slide groove 212, and the locking pin 215 is just engaged with the through hole 213. In addition, since the open leg state can be maintained, the user can sit on the seat 11. On the other hand, when the engagement pin 215 is pushed into the through hole 213 and the engagement is released, the slider 214 together with the frame body 10 slides to the lowermost end of the slide groove 212 and the support device 2 can be in a closed leg state. Therefore, the user can easily store the chair as it is.

  However, in such a conventional foldable chair, it is necessary to provide the slide grooves 212 on the left and right bars of the front leg frame 21, and the slider 214 is frequently attached to the front leg frame 21 when changing the open / closed leg state of the support device 2. Since the upper end and the lower end of the slide groove 212 provided are violently abutted, the front leg frame 21 itself tends to tear from the slide groove 212.

  In addition, the seat of such a conventional foldable chair is usually made of a hard cloth so that it avoids sinking down due to its own weight if it is made of an elastic material. Often used is a hollow shape that matches the sitting posture. However, these seats are molded into a hollow shape that matches the sitting posture of the person who sits in advance, so that when the chair is in a closed leg state, if it hangs down slowly, it will not only be seen and detract from the beauty, but it will also be long. There is also a drawback that the user feels tired and painful when sitting for hours.

  Therefore, the present invention has been made in view of the above problems, and the connection between the support device and the frame body is not required to be provided with a slide groove in the support device (front leg frame or rear leg frame). It is a first object of the present invention to provide a folding chair that hardly damages the support device.

  It is a second object of the present invention to provide a folding chair that has a refreshing appearance and a comfortable sitting style, in which the seat does not hang down when the folding chair is in a closed leg state.

  In order to achieve the first object, the present invention firstly includes a frame body that is always inclined forward and backward and a seat is mounted on the upper slope, a frame-shaped front leg frame having left and right bars, and a rear leg. The left and right bars are pivotally connected to the frame so that the left and right bars cross each other, and the left and right bars of the front leg frame are connected to the upper part of the frame near their upper ends, A foldable chair skeleton comprising left and right bars of the rear leg frame and a support device connected to the lower part of the frame near the upper ends of the frames, near the upper ends of the left and right bars of the front leg frame Each of the first sleeves is slidably mounted at least between a predetermined open leg position above and a predetermined closed leg position below the first sleeve, and the left and right bars of the front leg frame Near the top of the frame and near the top of the frame Is connected to each of the first sleeves and the frame body, and the first leg is positioned at the predetermined open position of the left and right bars of the front leg frame. An engagement member is formed, and the first sleeve is formed with a second engagement member capable of releasably engaging with the first engagement member, whereby the support When the device is in the open leg state, the left and right bars of the front leg frame slide to the first sleeve corresponding to the predetermined open leg position above the respective left and right rods, and are formed at the predetermined open leg position. A foldable chair framework characterized in that the first engaging member can be engaged with a second engaging member formed on the first sleeve to maintain the open leg state; and A folding chair having a seat mounted on the frame of the folding chair. Subjected to.

  In order to achieve the second object, in addition to the structure of the folding chair, the seat has an elastic layer made of two elastic materials, and has a rigidity and the two elastic layers. A support layer sandwiched between the two elastic layers, and the two elastic layers are each flatly delivered so as to leave a vertical gap between the intermediate spaces of the frame body. The foldable chair is characterized in that the layer is disposed and configured to be recessed in the gap.

  In the present invention according to the above structure, the frame body is located near the upper ends of the left and right bars of the front leg frame through the first sleeves, i.e., pivoted between the first sleeves and the frame body. Since there is a connection between the upper portion of the support device and the upper portion of the support device, it is not necessary to provide a slide groove in the support device, and the support device is hardly damaged.

  Further, the support layer has rigidity, and is sandwiched between the two elastic layers, and the two elastic layers have a vertical gap between the intermediate spaces of the frame body, respectively. When the folding chair is in a closed state, the seat is flat and does not hang down loosely, has a clean appearance, and is comfortable to sit on.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 2 is an exploded perspective view of a folding chair according to an embodiment of the present invention. FIG. 3 is a side view showing an open leg state and a closed leg state of the folding chair of the embodiment. FIG. 4 is an explanatory view showing the sliding state of the left and right bars of the front leg frame and the state of the leg engaged when engaged with the second engaging member in the folding chair of the embodiment. FIG. 5 is a side cross-sectional view of the state when the legs are engaged with the second engaging member of FIG. 4.

  As shown in FIG. 2, the folding chair is mainly provided with a seat body 3 and a support device 4.

  The seat body 3 includes a frame body 31 that is always inclined forward and backward, and a seat 32 that is mounted on the upper slope of the frame body 31. The support device 4 is pivotally connected to a frame-like front leg frame 41 and a rear leg frame 42 having left and right bars so that the left and right bars cross each other so as to freely open and close. The left and right bars are connected near the upper part of the frame 31 near their upper ends, and the left and right bars of the rear leg frame 42 are connected near the lower part of the frame 31 near their upper ends. That is, the frame 31 and the support device 4 are combined with each other to form the framework of the folding chair according to the present invention. A seat 32 is further mounted on the skeleton of the folding chair to form a folding chair according to the present invention.

  More specifically, the frame shapes of the front leg frame 41 and the rear leg frame 42 are each U-shaped, and the U-shaped front leg frame 41 and the rear leg frame 42 are formed of pipes, and the U-shaped opening. The pipes are arranged such that the ends are located toward the upper end, and the upper ends of the left and right bars are pipe-like upper ends that are independent of each other. Each of the front leg frame 41 and the rear leg frame 42 is structured to be separable into two left and right parts from the parts 41A and 42A connecting the left and right bars.

  Further, near the upper ends of both the left and right bars of the front leg frame 41, the first sleeve 43 is slidable between a predetermined open leg position above and a predetermined closed leg position below. It is disguised.

  The connection between the upper ends of the left and right bars of the rear leg frame 42 and the lower part of the frame body 31 is performed by pivotal attachment, but the upper ends of the left and right bars of the front leg frame 41 and the upper part of the frame body 31 are close to each other. The connection between the first sleeve 43 and the frame body 31 is performed by pivotal connection. A first engagement member 411 is formed at the predetermined open leg position of the left and right bars of the front leg frame 41, and the first sleeve 43 is releasably engaged with the first engagement member 411. A second engaging member 431 that can be formed is formed.

  As a result, as shown in FIG. 3, when the support device 4 is in the open leg state, the left and right bars of the front leg frame 41 slide to the first sleeve 43 corresponding to the predetermined open leg position above them. The first engagement member 411 formed at the predetermined open leg position is engaged with the second engagement member 431 formed on the first sleeve 43 to maintain the open leg state. can do.

  Specifically, the second engagement member 431 is a through hole 431A formed in the wall surface of the first sleeve 43, and the first engagement member 411 is the above-described left and right bars of the front leg frame 41. It is provided with a locking pin 4111 that can be elastically projected and retracted at a predetermined opening position and can be fitted into and engaged with the through-hole 431A when the support device 4 is in the open leg state. .

  More specifically, the first engaging member 411 includes a leaf spring 4112 having a V-shape and the locking pin 4111 formed on the outer surface of the leaf spring 4112, and the leaf spring 4112. Is fixed in the pipe-like left and right rods of the front leg frame 41 so that the arm having the V-shaped locking pin 4111 is a free end. The locking pin 4111 is fixed to the front leg frame 41. It protrudes from a perforation 412 formed in the wall surfaces of the pipe-shaped left and right bars.

  A second sleeve 44 is slidably mounted on the front leg frame 41 near the upper ends of the left and right bars. The second sleeve 44 has an insertion portion 441 with an opening 4411 extending between the outer wall surfaces of the left and right rods of the front leg frame 41 and the inner wall surface of the first sleeve 43. The portion 441 is fixed integrally with the first sleeve 43 so that the opening 4411 thereof corresponds to the through hole 431A in the first sleeve 43, and the locking pin 4111 is opened when the support device 4 is in the open leg state. 4411 and the through-hole 431A can protrude outward (see FIG. 5).

  Further, the second sleeve 44 is further elastically extended from the portion other than the insertion portion 441 to the outside of the locking pin 4111 protruding through the opening 4411 and the through hole 431A in the open leg state. An extended pressing arm 442 is provided. Accordingly, when the pressing arm 442 is pushed in the open leg state and the locking pin 4111 is sunk to the back side of the opening 4411 and the through hole 431A, the support device 4 can be adjusted to the closed leg state. Compared to pressing the locking pin 4111 directly with a finger in the past, pressing with the finger via the pressing arm 442 applies force on a wide surface, so that the locking pin 4111 can be easily sunk, It is more preferable because it is possible to prevent a finger from being caught in the gap between the through hole 431A and the locking pin 4111.

  In the present embodiment, four attachment frames 311 are fixed near the upper portion and the lower portion of the frame body 31. The first sleeve 43 and the first sleeve 43 are pivotally attached to the mounting frame 311 of the frame 31 near the upper ends of the left and right bars of the rear leg frame 42. In this case, as shown in FIG. 2, the cushion material 312 is interposed between the attachment frame 311 and the frame body 31 and at all the pivot attachments and pivots. It is preferable because the wear of the support device 4 can be reduced.

  FIG. 6 is an exploded perspective view of the seat according to the present embodiment. FIG. 7 is an exploded perspective view of another aspect of the seat of FIG. As shown in FIG. 6, the seat 32 includes elastic layers 321 and 321 made of two elastic materials, and a support layer that has rigidity and is sandwiched between the two elastic layers 321 and 321. 322. Further, the two elastic layers 321 and 321 are each flatly delivered so as to open an upper and lower gap 313 between the intermediate spaces of the frame 31, and the support layer 322 is arranged so as to be recessed downward in the gap 313. Has been. Here, since there are various methods such as sewing and attaching / detaching with the snap button 323 as shown in FIG. 7, there are various methods to be delivered to the frame 31 of the two elastic layers 321 and 321 and attached thereto. There is no particular limitation.

  As mentioned above, although preferred embodiment of this invention was described, it cannot be overemphasized that this invention is not limited to the said embodiment, A various deformation | transformation and change are possible within the range of the mind of this invention.

  As described above, according to the present invention, the connection between the support device and the frame body hardly damages the support device, improves the durability, and the seat is drooped slowly when the chair is in the closed leg state. It doesn't fall down, it can maintain its aesthetics, and it can sit comfortably.

The perspective view of an example of the conventional folding type chair. The disassembled perspective view of the folding type chair of one Embodiment of this invention. The side view which shows the open leg state and closed leg state of the folding type chair of one Embodiment of this invention. Explanatory drawing which shows the state at the time of the open leg engaged with the sliding state of the left-right both bars of the front leg frame, and the 2nd engaging member in the folding type chair of one Embodiment of this invention. The sectional side view of the state at the time of the open leg engaged with the 2nd engaging member of FIG. The disassembled perspective view of the seat of one Embodiment of this invention. The disassembled perspective view of another aspect of the seat of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 ... Seat main body, 31 ... Frame body, 311 ... Mounting frame, 312 ... Cushion material, 313 ... Gap, 32 ... Seat, 321 ... Elastic layer, 322 ... Support body layer, 323 ... Snap button, 4 ... Support device, 41 ... front leg frame, 411 ... first engaging member, 4111 ... locking pin, 4112 ... leaf spring, 41A ... part connecting both left and right bars, 412 ... perforation, 42 ... rear leg frame, 42A ... both left and right Part connecting the rods, 43 ... first sleeve, 431 ... second engaging member, 431A ... through hole, 44 ... second sleeve, 441 ... insertion part, 4411 ... opening, 442 ... pressing arm .

Claims (10)

Opening and closing legs from a frame body that is always slanted forward and backward and a seat is mounted on the upper slope, and a frame-like front leg frame and left and right leg frames having left and right bars so that the left and right bars cross each other The left and right bars of the front leg frame are connected to each other near the upper part of the frame body near their upper ends, and the left and right bars of the rear leg frame are connected to the upper parts of the frame body near their upper ends. A foldable chair skeleton comprising a support device connected near the bottom,
Near the upper ends of the left and right bars of the front leg frame, the first sleeves are slidably mounted at least between a predetermined open leg position above and a predetermined closed leg position below. And
The connection between the upper end of the left and right bars of the front leg frame and the upper portion of the frame is performed by pivoting between the first sleeve and the frame,
Further, a first engagement member is formed at the predetermined open leg position of the left and right bars of the front leg frame, and the first engagement member is releasably engaged with the first sleeve. A second engaging member is formed,
As a result, when the support device is in the open leg state, the left and right bars of the front leg frame slide to the first sleeve corresponding to the predetermined leg position located above the front leg frame, respectively. A folding type wherein the first engagement member formed at a position can be engaged with a second engagement member formed on the first sleeve to maintain the open leg state. The framework of the chair. A seat body having a frame body that is always inclined forward and backward, a seat mounted on the upper slope of the frame body, a frame-like front leg frame having left and right bars, and a rear leg frame. The left and right bars of the front leg frame are connected to the upper part of the frame near their upper ends, and the left and right bars of the rear leg frame are connected to each other. A folding chair comprising a support device connected near the upper end and near the lower part of the frame,
Near the upper ends of the left and right bars of the front leg frame, the first sleeves are slidably mounted at least between a predetermined open leg position above and a predetermined closed leg position below the first sleeve. And
The connection between the upper end of the left and right bars of the front leg frame and the upper part of the frame is made by pivoting between the first sleeve and the frame,
Further, a first engagement member is formed at the predetermined open leg position of the left and right bars of the front leg frame, and the first engagement member is releasably engaged with the first sleeve. A second engaging member is formed,
As a result, when the support device is in the open leg state, the left and right bars of the front leg frame slide to the first sleeve corresponding to the predetermined open leg position above them, and the predetermined open leg. The folding type characterized in that the first engagement member formed at a position can be engaged with the second engagement member formed on the first sleeve to maintain the open leg state. Chair. The second engagement member is a through hole formed in the wall surface of the first sleeve,
The first engagement member is elastically installed at the predetermined open leg position of the left and right bars of the front leg frame, and is inserted into the through hole when the support device is in the open leg state. The folding chair according to claim 2, further comprising a locking pin that can be engaged therewith.   The frame shape of the front leg frame is U-shaped, the U-shaped front leg frame is formed of a pipe, and the U-shaped open end is arranged toward the upper end, and the left and right sides thereof are arranged. The folding chair according to claim 3, wherein the upper ends of both bars are pipe-shaped upper ends that are independent of each other. A second sleeve is slidably mounted near the upper ends of the left and right bars of the front leg frame, and the second sleeve includes outer wall surfaces of the left and right bars of the front leg frame and the first sleeve. There is an insertion portion with an opening extending between the inner wall surface of the first sleeve, and the insertion portion is integrated with the first sleeve so that the opening corresponds to a through hole in the first sleeve. When the support device is in an open leg state, the locking pin can protrude outside via the opening and the through hole,
Further, the second sleeve is further elastically extended from a portion other than the insertion portion to the outside of the locking pin protruding through the opening and the through hole in the open leg state. A pressing arm is provided,
Accordingly, the support device can be adjusted to a closed leg state by pushing the pressing arm in an open leg state and sinking the locking pin to the back side of the opening and the through hole. Folding chair as described in The first engagement member includes a leaf spring having a V shape and the locking pin formed on the outer surface of the leaf spring,
The leaf spring is fixed in the pipe-like left and right rods of the front leg frame so that the arm having the V-shaped locking pin becomes a free end,
5. The folding chair according to claim 4, wherein the locking pin protrudes from a perforation formed on the wall surfaces of the pipe-like left and right bars of the front leg frame.   The foldable chair according to any one of claims 2 to 6, wherein the first sleeve is pivotally attached to an attachment frame fixed near an upper portion of the frame body.   The seat is composed of an elastic layer made of two elastic materials and a support layer having rigidity and sandwiched between the two elastic layers. The folding chair according to any one of claims 2 to 6. The two elastic layers are each flatly delivered so as to leave a vertical gap between the intermediate spaces of the frame body,
The foldable chair according to claim 8, wherein the support layer is arranged and configured to be recessed downward in the gap.   The said front leg frame and the said rear leg frame are respectively the structures which can be isolate | separated into the left-right 2 part from the part which connected the said left-right both bars. Folding chair as described in

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