CN211582305U - Folding chair - Google Patents

Abstract

The utility model discloses a folding seat chair, it includes supporter and backrest portion, is equipped with the seatpad on the supporter, and the downside of backrest portion is connected with the rear side of supporter is articulated be equipped with locking portion on the supporter, being equipped with the locking piece leaning against the portion of moving upward, this locking piece is corresponding with locking portion, still is equipped with the unblock controlling part in backrest portion, and the unblock controlling part is connected with the transmission of locking piece. Folding seat can lock the position of backing up the portion when opening or folding, and when opening or locking, it is more convenient to operate.

Description

Folding chair

Technical Field

The utility model belongs to the field of furniture and medical instrument, concretely relates to folding seat chair.

Background

Most chairs are provided with a backrest part against which a user's back can be fully rested and relaxed.

The existing seat back part has two types of fixed type and folding type, and the fixed type back part has a relatively simple structure, but the seat back part can not be folded, so that the occupied space is larger; for the backrest part of the folding type seat, the backrest part and the seat cushion are in a relatively movable state, when the backrest part is opened or folded, the accurate locking of the backrest part is very important, and meanwhile, the convenience of operation needs to be considered.

Disclosure of Invention

An object of the utility model is to provide a folding seat chair, folding seat chair can lock the position of leaning against the portion when opening or folding, when opening or locking, it is more convenient to operate.

The technical scheme is as follows:

folding seat, including supporter and back portion, be equipped with the seatpad on the supporter, the downside of back portion is connected with the rear side of supporter is articulated be equipped with locking portion on the supporter, be equipped with the locking piece in the portion of leaning back the activity, this locking piece is corresponding with locking portion, still is equipped with the unblock controlling part on the back portion, and the unblock controlling part is connected with the locking piece transmission.

The backrest part of the folding seat is hinged with the support body, so that a user can open the backrest part according to the self requirement so as to lean against the backrest part of the user, and can put down the backrest part so as to fold the seat for storage, storage or transportation; when opening or folding, lock the position of backing the portion through locking piece and locking portion, and when needing the unblock, can be convenient control through the unblock controlling part on the operation backing the portion, it is very convenient to use.

Further, the locking part comprises a folding locking part and an opening locking part. The locking piece can respectively with folding locking portion, open locking portion cooperation, to the fold condition and the open mode of back portion, all can realize the locking through the locking piece.

Further, the folding locking part is positioned at the front side of the opening locking part, and the locking end of the locking piece faces the front side direction of the supporting body. The interference of external objects on the locking piece can be avoided as much as possible, so that the operation reliability is improved, and the influence of the locking piece on the appearance of the wheelchair is reduced.

Further, the supporter includes the main support be equipped with articulated tip on the main support, be equipped with the hinge hole in the articulated tip, the portion of leaning on passes through the hinge hole with the supporter is articulated, locking portion locates on the articulated tip. When the backrest part is opened or folded, the locking piece can rotate relative to the axis of the hinged end part, the locking piece can be guaranteed to be located at the position with the same distance as the first hinged shaft, the position of the locking piece can be conveniently arranged, and the locking action is more accurate.

Further, the outer edge of the hinged end portion is provided with a transition arc, and the folding locking portion and the opening locking portion are located on the transition arc. The outer edge of the hinged end part is provided with a transition arc which can guide the locking piece, so that the smooth and reliable action of the locking piece is ensured.

Furthermore, the locking part is provided with a first clamping groove and a second clamping groove, the locking piece is provided with a first locking protrusion and a second locking protrusion, the first locking protrusion is matched with the first clamping groove, and the second locking protrusion is matched with the second clamping groove.

Furthermore, the locking piece has a locking arm, first lock protruding, second lock protruding being located the locking end of locking arm, first lock protruding, second lock protruding and locking arm forms "F" column structure.

Furthermore, the first locking protrusion is positioned at the front end of the second locking protrusion, the first locking protrusion is provided with a first locking inclined surface and a second locking inclined surface, the first locking inclined surface and the second locking inclined surface are inclined to form a V-shaped or U-shaped structure, and the first clamping groove is adapted to the shape of the first locking protrusion; the second locking protrusion is provided with a smooth transition curved surface; the two sides of the first clamping groove are respectively provided with a first guide surface and a second guide surface. The locking piece comprises a first locking protrusion and a second locking protrusion, the first locking protrusion is in a V-like shape or a U-like shape, when the first locking protrusion is inserted into the first clamping groove, the position of the backrest part can be locked in a combined and fixed mode, and the locking piece is prevented from falling off; the second locking protrusion is provided with a smooth transition curved surface, and when the locking or unlocking is carried out, the first guide surface and the second guide surface can guide the second locking protrusion so as to reduce the position sudden change of the locking piece when the locking or unlocking is carried out, and the operation control is softer.

Further, an angle between the first guide surface and the second guide surface is larger than an angle between the first locking inclined surface and the second locking inclined surface. The angle between the first locking inclined surface and the second locking inclined surface is small so as to ensure reliable locking, and the angle between the first guide surface and the second guide surface is large so as to enable smooth guiding in the locking or unlocking process.

Furthermore, the unlocking control piece comprises a handle, the handle is hinged to the lower portion of the rear side of the backrest portion, and the handle is in transmission connection with the locking piece through a pulling piece.

Furthermore, the locking piece is hinged to the backrest part, the traction piece is connected to the first end of the locking arm of the locking piece, and the second end of the locking arm of the locking piece is connected with the reset piece.

Furthermore, the handle is provided with a lifting part and a lifting rod, the lifting rod is hinged with the backrest part, the lifting part is arranged at the end part of the lifting rod, and the middle part of the lifting rod is bent towards the inner side of the backrest part. The lifting rod adopts an inward bending structure, so that the lifting rod is consistent with the stress direction of the lifting rod on one hand, and on the other hand, the lifting rod can be enabled to lean towards the inner side, and the influence of the action parts on the appearance of the backrest part is avoided.

Furthermore, the handle is provided with a lifting part and a lifting rod, the lifting rod is hinged with the backrest part, and the lifting part is arranged at the end part of the lifting rod; the underside of the backrest portion has a backrest surface against which the outer side of the pull-up portion is flush in the natural state. The outer side of the lifting part is flush with the surface of the backrest part, the handle and the backrest part are integrally integrated, the smoothness and the smoothness of the appearance of the whole backrest part are reduced, and the appearance is more attractive.

Further, the outer side of the lifting part is in a sheet shape. The sheet-shaped structure is convenient to operate, and simultaneously, the sheet-shaped structure can be better matched with the plane of the backrest part.

Further, the pulling part is in a long sheet shape and extends in the left-right direction of the folding seat. The long sheet-shaped lifting part extending in the left-right direction can facilitate the unlocking force to be transmitted to two sides when unlocking.

Further, both left and right ends of the pulling portion are bent toward the front side of the folding seat with respect to the middle portion thereof. The two ends of the lifting part are bent towards the front side, when the hand acts on the lifting part, the hand feeling is more comfortable, and simultaneously, the hand is also matched with the outer radian of the backrest part

Furthermore, locking portion, locking piece are two, two locking portion, locking piece are located respectively the both sides of portion of leaning on all are equipped with locking portion in the left and right sides of main support, lean on the portion and lock through the locking piece of both sides, and the reliability is high.

Furthermore, the device also comprises a transverse pull rod, two first longitudinal pull rods and two second longitudinal pull rods; the two first longitudinal pull rods are connected to the positions, close to the end parts, of the transverse pull rods, the two second longitudinal pull rods are connected to the transverse pull rods, and the second longitudinal pull rods are closer to the middle parts of the transverse pull rods relative to the first longitudinal pull rods; the two first longitudinal pull rods are respectively connected with the locking pieces on the two sides, and the two second longitudinal pull rods are respectively connected with the lifting part.

Drawings

FIG. 1 is a block diagram of the folding seat of the present invention in an open and locked position;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an enlarged partial view of the hinged end;

FIG. 4 is an enlarged fragmentary view of the latch member;

fig. 5 is a structural diagram of the folding seat of the present invention in an open and unlocked state;

FIG. 6 is an enlarged partial view of FIG. 5;

FIG. 7 is a view of the folding seat of the present invention in a folded and locked position;

FIG. 8 is an enlarged partial view of FIG. 7;

fig. 9 is a structural view of the folding seat of the present invention in a folded and unlocked state;

FIG. 10 is an enlarged partial view of FIG. 9;

FIG. 11 is a side view of the folding seat of the present invention;

FIG. 12 is an enlarged view of a portion of the folding seat of the present invention;

description of reference numerals:

10. the support body, 11, the hinge end portion, 111, the hinge hole, 112, the transition arc, 20, the back portion, 40, the locking portion, 41, the first clamping groove, 42, the second clamping groove, 50, the locking member, 51, the locking arm, 52, the first locking protrusion, 521, the first locking inclined surface, 522, the second locking inclined surface, 53, the second locking protrusion, 60, the unlocking control member, 61, the lifting portion, 62, the lifting rod, 63, the cross rod, 64, the first longitudinal rod, 65, the second longitudinal rod, 81, the first hinge shaft, 82, the second hinge shaft, 83, the third hinge shaft, 84, the fourth hinge shaft, 85, the fifth hinge shaft, 86 and the resetting member.

Detailed Description

The following describes embodiments of the present invention in detail.

As shown in fig. 1, 5, 7, 9 and 11, the folding wheelchair is shown in various states, and partially enlarged structural views are shown in fig. 2, 3, 4, 6, 8, 10 and 12 (it should be noted that each view of the present embodiment only retains the main frame portion of the wheelchair, and the purpose is to reflect the internal connection structure thereof more clearly, and the description thereof is omitted below). As shown in fig. 1, the foldable wheelchair includes a support 10 and a backrest 20, a seat cushion is disposed on the support 10, a lower side of the backrest 20 is hinged to a rear side of the support 10, a locking portion 40 is disposed on the support 10, a locking member 50 is movably hinged to the backrest 20 through a fourth hinge shaft 84, the locking member 50 corresponds to the locking portion 40, an unlocking control 60 is further disposed on the backrest 20, and the unlocking control 60 is in transmission connection with the locking member 50.

As shown in fig. 2, the backrest 20 of the folding seat of the present embodiment is hinged to the supporting body 10 by a first hinge shaft 81, as shown in fig. 1 and 2, when in use, the backrest 20 is opened relative to the supporting body 10 so that the user can lean against the backrest; as shown in FIG. 8, when not in use, the user may also lower the backrest portion 20 to fold the seat for storage, storage or transportation; when the backrest part 20 is unfolded or folded, the position of the backrest part 20 is locked through the locking piece 50 and the locking part 40, and when the backrest part 20 needs to be unlocked, the backrest part can be conveniently controlled by operating the unlocking control piece 60 on the backrest part 20, so that the backrest part is very convenient to use.

As shown in fig. 2, 3, 6, 8, 10 and 12, the support body 10 includes a main support, two hinge end portions 11 are disposed at two sides of the main support, a hinge hole 111 is disposed in each hinge end portion 11, the backrest portion 20 is hinged to the support body 10 through the hinge hole 111 and the first hinge shaft 81, two locking portions 40 are provided, two locking portions 40 are respectively disposed on the hinge end portions 11, two locking members 50 are provided, and the two locking portions 40 and the two locking members 50 are respectively disposed at two sides of the backrest portion 20. Locate the articulated tip 11 position of main support with locking portion 40, main support and the articulated position of portion of leaning on 20 mutually promptly, when portion of leaning on 20 is opened or is folding, locking piece 50 can be rotatory for this articulated tip 11 axle center, can guarantee that locking piece 50 all is in with the position of first articulated shaft 81 with the distance, the position that sets up locking piece 50 that can be convenient, the locking action is also more accurate, and the left and right sides of main support all is equipped with locking portion 40, lean on portion 20 and lock through the locking piece 50 of both sides, high reliability.

As shown in fig. 12, the transmission components between the unlocking control 60 and the locking member 50 include a tie rod 63, two first drag rods 64, and two second drag rods 65; the two first longitudinal tie rods 64 are connected to the end parts of the tie rods 63, the two second longitudinal tie rods 65 are connected to the tie rods 63, and the second longitudinal tie rods 65 are closer to the middle parts of the tie rods 63 relative to the first longitudinal tie rods 64; the two first drag links 64 are connected to the locking members 50 on both sides by second hinge shafts 82, respectively, and the two second drag links 65 are connected to the pulling portion 61 by third hinge shafts 83, respectively. The two second longitudinal pull rods 65 on the inner side are driven by the lifting part 61, the two first longitudinal pull rods 64 on the outer side are driven by the transverse pull rod 63, and the locking piece 50 is lifted by the first longitudinal pull rods 64 on the two sides to realize unlocking.

As shown in fig. 2, 3 and 6, the locking part 40 includes a folding locking part and an opening locking part, each locking part 40 has a first locking groove 41 and a second locking groove 42, the folding locking part is located at the front side of the opening locking part, and the locking end of the locking member 50 faces the front side direction of the supporting body 10 ("front side" refers to the direction that the user faces after sitting on the seat). The outer edge of the hinged end portion 11 has a transition arc 112, and the folding locking portion and the opening locking portion are located on the transition arc 112. The locking member 50 has a first locking protrusion 52 and a second locking protrusion 53, the first locking protrusion 52 is engaged with the first engaging groove 41, and the second locking protrusion 53 is engaged with the second engaging groove 42. The locking portion includes folding locking portion, opens locking portion, can all realize the locking through the fold condition and the open mode of locking piece 50 to backrest portion 20, simultaneously, locking piece 50's locking end orientation the front side direction of supporter 10 can avoid the interference of outside article to locking piece 50 as far as to improve the reliability of controlling, and reduce the influence of locking piece 50 to the wheelchair appearance.

The locking member 50 is hinged to the backrest portion 20 through a fourth hinge shaft 84, the locking member 50 has a locking arm 51, the first locking protrusion 52 and the second locking protrusion 53 are located at a locking end of the locking arm 51, and the first locking protrusion 52, the second locking protrusion 53 and the locking arm 51 form an "F" -shaped structure. The first locking protrusion 52 is located at the front end of the second locking protrusion 53 (the "front end" refers to an end position close to the locking end of the locking arm 51), the first locking protrusion 52 has a first locking inclined surface 521 and a second locking inclined surface 522, the first locking inclined surface 521 and the second locking inclined surface 522 are inclined to form a V-like shape or a U-like shape, and the first locking groove 41 is adapted to the shape of the first locking protrusion 52; the second locking protrusion 53 has a smooth transition curved surface; two sides of the first engaging groove 41 are respectively provided with a first guiding surface and a second guiding surface. The angle between the first and second guide surfaces is greater than the angle between the first and second locking slopes 521 and 522. The locking member 50 includes a first locking protrusion 52 and a second locking protrusion 53, the first locking protrusion 52 is in a V-like shape or a U-like shape, and when the first locking protrusion 52 is inserted into the first slot 41, the position of the backrest portion 20 can be locked in a fixed position by comparison, so that the locking member 50 is prevented from falling out; the second locking protrusion 53 has a smooth transition curved surface, and when the locking or unlocking is performed, the first guide surface and the second guide surface can guide the second locking protrusion 53, so that sudden position change of the locking member 50 during locking or unlocking is reduced, and operation control is softer. The outer edge of the hinged end portion 11 has a transition arc 112, which can guide the locking member 50 and ensure the smooth and reliable action of the locking member 50. The angle between the first locking inclined surface and the second locking inclined surface is small to ensure reliable locking, the angle between the first guide surface 521 and the second guide surface 522 is large, and smooth transition curved surfaces are combined to ensure smoother guiding in the locking or unlocking process.

The unlocking control 60 comprises a handle hinged below the rear side of the backrest 20 via a fifth hinge shaft 85, and the handle is in transmission connection with the locking member 50 via a pulling member. The handle is provided with a lifting part 61 and a lifting rod 62, the lifting rod 62 is hinged with the backrest part 20, the lifting part 61 is arranged at the end part of the lifting rod 62, and the middle part of the lifting rod 62 is bent towards the inner side of the backrest part 20. The lifting rod 62 is bent inward, so that the lifting rod 62 can be pushed inward to avoid the influence of the action parts on the shape of the backrest 20. The latch member 50 is hinged to the backrest 20, the pulling member is connected to a first end of the locking arm 51 of the latch member 50, and a reset member 86 (in this embodiment, the reset member 86 is a reset spring) is connected to a second end of the locking arm 51 of the latch member 50. The underside of the backrest portion 20 has a backrest surface, and the outer side of the pull-up portion 61 is flush with the surface of the backrest portion 20. In this embodiment, in a natural state, the outer side of the lifting portion 61 is flush with the surface of the backrest portion 20. "in a natural state" refers to a state that is assumed when no external force is applied, in which the outer side of the pulling portion 61 is flush with the surface of the backrest portion 20. The "flush" does not require perfect alignment, and the backrest portion 20 may be substantially flush with the outer side of the pull-up portion 61 for the purpose of enhancing the aesthetic appearance of the backrest portion 20. "in the natural state" is relative to "the open state", in which an external force is applied to the pull-up portion 61, and by pulling up the pull-up portion 61, the pull-up portion 61 is rotated relative to the fifth hinge shaft 85, and the lock member 50 is unlocked.

As shown in fig. 11 and 12, the outer side of the pull-up portion 61 is formed in a long piece shape and extends in the left-right direction of the folding seat, and both left and right ends of the pull-up portion 61 are bent toward the front side of the folding seat with respect to the middle thereof. The outer side of the lifting part 61 of the handle is flush with the surface of the backrest part, so that the lifting part 61 and the backrest part 20 can be integrally integrated, and the appearance is more attractive; the two ends of the lifting part 61 are bent towards the front side, when hands act on the lifting part 61, the hand feeling is more comfortable, and simultaneously the hand feeling is matched with the outer radian of the backrest part 20, the pulling force of the middle part of the long sheet-shaped lifting part 61 can be transmitted to the locking piece 50 through the cross pull rod 63 and other parts to unlock, so that the elastic force of the return spring is overcome to unlock.

It should be noted that:

the foregoing references to "first and second …" do not denote any particular quantity or order, but rather are used merely to distinguish one name from another.

The embodiment is directed to the locking and unlocking of the backrest portion 20 of the folding wheelchair, and the utility model discloses can also be applicable to the locking and unlocking of other seats besides the wheelchair, if: the wheelchair may be in the form of a child stroller.

The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby; any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.

Claims (18)

1. The folding seat is characterized by comprising a support body and a backrest part, wherein a seat cushion is arranged on the support body, the lower side of the backrest part is hinged to the rear side of the support body, a locking part is arranged on the support body, a locking piece is movably arranged on the backrest part and corresponds to the locking part, an unlocking control piece is further arranged on the backrest part, and the unlocking control piece is in transmission connection with the locking piece.

2. The folding seat of claim 1, wherein said latch portion comprises a fold latch portion and an open latch portion.

3. The folding seat of claim 2, wherein said folding latch portion is located forward of said opening latch portion, and the latch end of the latch member is oriented forward of said support body.

4. The folding seat of claim 1, wherein said support body includes a main support frame, a hinge end portion is provided on said main support frame, a hinge hole is provided in said hinge end portion, said backrest portion is hinged to said support body through said hinge hole, and said locking portion is provided on said hinge end portion.

5. The folding seat of claim 4, wherein the outer edge of said hinged end portion has a transition arc, and said fold latch portion and said fold release latch portion are located on said transition arc.

6. The folding seat of claim 1, wherein said latch portion has a first slot and a second slot, and said latch member has a first locking protrusion and a second locking protrusion, said first locking protrusion engaging said first slot and said second locking protrusion engaging said second slot.

7. The folding seat of claim 6, wherein said latch member has a latch arm, said first latch protrusion and said second latch protrusion being located at a latch end of said latch arm, said first latch protrusion, said second latch protrusion and said latch arm forming an "F" shaped structure.

8. The folding seat of claim 7, wherein said first locking protrusion is located at the front end of said second locking protrusion, said first locking protrusion has a first locking slope and a second locking slope, said first locking slope and said second locking slope are inclined to form a V-like shape or a U-like shape, and said first engaging groove is adapted to the shape of said first locking protrusion; the second locking protrusion is provided with a smooth transition curved surface; the two sides of the first clamping groove are respectively provided with a first guide surface and a second guide surface.

9. The folding seat of claim 8, wherein an angle between said first guide surface and said second guide surface is greater than an angle between said first locking ramp and said second locking ramp.

10. A folding seat as claimed in any one of claims 1 to 9, wherein said unlocking control comprises a catch hingedly connected beneath the rear side of said backrest portion, said catch being drivingly connected to said latch by a pull member.

11. The folding seat of claim 10, wherein said latch member is hingedly connected to said backrest portion, said pull member is connected to a first end of a locking arm of said latch member, and a reset member is connected to a second end of said locking arm of said latch member.

12. The folding seat of claim 10, wherein said handle has a lifting portion and a lifting rod, said lifting rod is hinged to said backrest portion, said lifting portion is disposed at an end portion of said lifting rod, and a middle portion of said lifting rod is bent inward of said backrest portion.

13. The folding seat of claim 10, wherein said handle includes a lifting portion and a lifting bar, said lifting bar being hingedly connected to said backrest portion, said lifting portion being disposed at an end of said lifting bar; the underside of the backrest portion has a backrest surface against which the outer side of the pull-up portion is flush in the natural state.

14. The folding seat of claim 13, wherein an outer side of said lifting portion is in the form of a tab.

15. The folding seat of claim 14, wherein said pull-up portion has a long piece shape and extends in the left-right direction of the folding seat.

16. The folding seat of claim 15, wherein both left and right ends of said pull-up portion are bent toward a front side of the folding seat with respect to a middle portion thereof.

17. A folding seat as claimed in any one of claims 1 to 9, wherein there are two said latching portions and two said latching members, one on each side of said backrest portion.

18. The folding seat of claim 17, further comprising a cross-brace, two first side-braces, two second side-braces; the two first longitudinal pull rods are connected to the positions, close to the end parts, of the transverse pull rods, the two second longitudinal pull rods are connected to the transverse pull rods, and the second longitudinal pull rods are closer to the middle parts of the transverse pull rods relative to the first longitudinal pull rods; the two first longitudinal pull rods are respectively connected with the locking pieces on the two sides, and the two second longitudinal pull rods are respectively connected with the lifting part.

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