WO2009043315A1 - Foldable step stool, foldable step bar chair and foldable chair - Google Patents

Abstract

A foldable step stool , a foldable step bar chair and a foldable chair are disclosed. The foldable step stool includes a legs unit, a seat unit, a supporting unit and a middle unit. The legs unit includes front legs and rear legs, the head ends of the front legs are rotatable with the head ends of the rear legs. The seat unit is rotatablely connected to the legs unit and on it. The supporting unit is rotatable with the seat unit. The lower ends of the supporting unit is connected to the rear legs, so that the seat unit, the supporting unit and the rear legs can be selectively locked and connected to each other to form a triangular structure or to release the locking relation to be folded.

Description

 Description A folding step stool and folding ladder bar and folding chair

 [1] The present invention relates to a piece of furniture, and more particularly to a folding step stool and a folding ladder bar and a folding chair.

 Background technique

 [2] The existing folding step stool generally has a front leg, a rear leg, a seat and a connecting member. The rear leg is pivotally connected to the upper part of the front leg. The middle of the seat is pivotally connected to the middle of the front leg, and the first end of the connecting member is pivotally connected. In the middle of the rear leg, the second end of the connecting member is pivotally connected to the rear portion of the seat, so that the front leg, the rear leg, the seat and the connecting member form a four-link assembly, and the locking member is used for locking and folding. The step stool is in an unfolded state or the lock is released to fold the folding step stool. First, since the seat is supported by the front leg and the connecting member, the connecting member is subjected to strong force, so the connecting member is easily damaged, the safety performance of the folding step stool is not high, and the service life is not strong; second, since the middle of the seat is pivoted to the front In the middle of the leg, the rear part of the seat is pivotally connected to the second end of the connecting piece, so that the front part of the seat is suspended, so that the stability of the seat is not high, and the seat may be turned forward.

 Summary of the invention

 [3] The present invention provides a folding step stool and a folding ladder which overcomes the deficiencies of the prior art folding step stool of the prior art.

 [4] The technical solution adopted by the present invention to solve the technical problem thereof is: a folding step stool, which comprises a leg unit

, seating unit, support unit and intermediate unit. The leg unit includes a front leg and a rear leg, and the front leg head and the rear leg head form a rotatable connection relationship. The seating unit is rotatably coupled to the leg unit. The support unit and the seat unit form a rotatable connection relationship, and the lower end of the support unit is connected to the rear leg such that the seat unit, the support unit and the rear leg are selectively locked into a triangular structure or the lock is released. Connected to the fold. The intermediate unit is used to lock the front and rear legs or release the lock.

 [5] In a preferred embodiment of the present technical solution, the rear leg is slidably coupled with a sliding member, and the lower end of the supporting unit is rotatably coupled to the sliding member.

 [6] In a preferred embodiment of the present invention, a locking member is additionally provided for locking the relative position between the positioning slider and the rear leg or releasing the locking.

[7] In a preferred embodiment of the technical solution, the front end of the intermediate unit is rotatably connected to the front leg, and the rear end is rotatably connected Slider.

 In a preferred embodiment of the present technical solution, the front end of the intermediate unit is rotatably coupled to the front leg, and the rear end is rotatably coupled to the support unit.

 In a preferred embodiment of the present technical solution, the support unit has a portion that protrudes above the seat unit, and the portion is provided with a backrest unit.

 In a preferred embodiment of the present technical solution, the front leg and the rear leg are pivotally connected.

 In a preferred embodiment of the present invention, the front portion of the bottom surface of the seat unit is pivotally connected to the leg unit, and the rear portion of the seat unit is pivotally connected to the support unit.

 In a preferred embodiment of the present invention, the front leg and the rear leg are respectively pivotally connected to the front portion and the front portion of the bottom surface of the seat unit, and the rear portion of the seat unit is pivotally connected to the support unit.

 Still another technical solution to which the present invention solves its technical problems is: A folding chair comprising a leg unit, a seating unit, a support unit, and an intermediate unit. The leg unit includes a front leg and a rear leg, and the front leg and the rear leg form a rotatable connection relationship. The seating unit is rotatably coupled to the leg unit. The support unit and the seat unit form a rotatable connection relationship, and the lower end of the support unit is connected to the rear leg such that the seat unit, the support unit and the rear leg are selectively locked into a triangular structure or the lock is released. Connected to the fold. The intermediate unit is used for locking and positioning the front leg and the rear leg or releasing the lock. The technical solution adopted by the present invention to solve the technical problem thereof is: a folding ladder bar, which comprises a leg unit, a seat unit and a support unit And the middle unit. The leg unit includes a front leg and a rear leg, and the front leg head and the rear leg head form a rotatable connection relationship. The seating unit is rotatably coupled to the leg unit. The support unit and the seat unit form a rotatable connection relationship, and the lower end of the support unit is connected to the rear leg such that the seat unit, the support unit and the rear leg are selectively locked into a triangular structure or the lock is released. Connected to the fold. The intermediate unit is used to lock the front and rear legs or release the lock. The beneficial effects of the technical solution are as follows: First, since the seat unit is connected to the front leg and the rear leg of the leg unit and the support unit, the support strength is high and the support stability is high; and second, since the seat unit is supported by the support The leg unit and the supporting unit, the supported points of the seat unit can be arranged in front of and behind the seat unit, so that there is no floating portion, and the stability is high, and the tipping is prevented.

DRAWINGS The invention is further described below in conjunction with the drawings and embodiments.

[17] FIG. 1 is a perspective view showing the folding stool of the present embodiment in an unfolded state.

 [18] FIG. 2 is a perspective view showing the folding stool of the present embodiment in a folded state.

[19] FIG. 3 is a schematic diagram showing the mechanism of the step ladder of the present invention.

[20] Fig. 4 is a schematic view showing the sliding sleeve of the step ladder of the present embodiment.

[21] FIG. 5 is a schematic diagram showing the mechanism of the step ladder of the present invention.

[22] Figure 6 is a schematic diagram showing the mechanism of the step ladder of the present embodiment.

[23] Figure 7 is a schematic diagram showing the mechanism of the step ladder of the present invention.

[24] FIG. 8 is a schematic diagram showing the mechanism of the step ladder of the present invention.

[25] FIG. 9 is a perspective view showing the folding chair of the seventh embodiment in an unfolded state.

[16] FIG. 10 is a perspective view showing the folding chair of the seventh embodiment in a folded state.

 detailed description

 [27] Example 1

[28] Please refer to FIG. 1, FIG. 2 and FIG. 3. FIG. 1 is a perspective view showing the folding step ladder of the first embodiment in an unfolded state, and FIG. 2 is a view showing the folding step stool of the first embodiment being folded. FIG. 3 is a schematic perspective view showing the mechanism of the folding step stool of the first embodiment. A folding step stool includes a leg unit 10, a seat unit 20, a support unit 30, and an intermediate unit 40.

 [29] The leg unit 10 includes a front leg 11 and a rear leg 12, and the front leg 11 and the rear leg 12 are pivotally connected together to form a rotatable connection relationship between the front leg 11 and the rear leg 12 head. . A front step stool pedal 16 is disposed between the two front legs 11 and a rear crossbar 13 is fixed between the two rear legs. A locking post is protruded from the rear leg 12, and the rear leg 12 is further slidably provided with a sliding sleeve 14, and the sliding sleeve 14 is located above the locking post. The lower portion of the sliding sleeve 14 is provided with a locking groove 15, and the opening of the locking groove 15 is slightly larger than the outer diameter of the locking post, as shown in FIG.

 [30] Please refer to FIG. 1, FIG. 2 and FIG. 3, the seat unit 20 is a rigid panel, and the front surface of the bottom surface is pivotally connected to the top of the leg unit 10.

The support unit 30 includes a support rod, and the middle portion of the support rod is pivotally connected to the rear of the seat unit 20 such that the support unit 30 and the seat unit 20 form a rotatable connection relationship. The bottom end of the support rod is pivotally connected to the sliding sleeve 14 such that the seat unit 20, the supporting unit 30 and the rear leg 12 are selectively locked into each other. Triangular structure or release the lock to fold. Further, the backrest unit 50 is fixed between the portions of the support bar above the seat unit 20 as the user's backrest.

[32] The front end of the intermediate unit 40 is rotatably coupled to the middle of the front leg 11, the rear end is rotatably coupled to the bottom end of the support unit 30, and the axis of rotation between the intermediate unit 40 and the support unit 30 and the support unit 30 and the sliding sleeve 14 The axes of rotation coincide.

 [33] 吋, positioning the front leg 11, rotating the seat unit 20 relative to the axis of rotation between the front leg 11 and the rear leg 12, driving the rotation axis between the support unit 30 and the seat unit 20 to rotate, driving the support unit 30 to move, The sliding sleeve 14 is slid downward relative to the rear leg 12, and the intermediate unit 40 is rotated relative to the rotation axis between the intermediate unit 40 and the front leg 11, and the rear leg 12 is rotated relative to the rotation axis between the front leg 11 and the rear leg 12. When the locking groove 15 of the sliding sleeve 14 is sleeved and abuts against the locking post, the folding step stool is in and positioned in an unfolded state.

[34] Example 2

 [35] Please refer to FIG. 5, which illustrates a schematic diagram of the mechanism of the folding step stool of the second embodiment. The embodiment is different from the first embodiment in that: the front end of the intermediate unit 40 is rotatably connected to the middle of the front leg 11, the rear end is rotatably connected to the sliding sleeve 14, and the rotation axis and the supporting unit between the intermediate unit 40 and the supporting unit 30 are The axis of rotation between the 30 and the sliding sleeve 14 does not coincide.

 [36] Example 3

 [37] Please refer to FIG. 6, which illustrates a schematic diagram of the mechanism of the folding step stool of the third embodiment. The first embodiment is different from the first embodiment in that: the front end of the intermediate unit 40 is rotatably connected to the middle portion of the front leg 11, and the rear end is rotatably connected to the lower middle portion of the support unit 30, and the connection position is located between the seat unit 20 and the sliding sleeve 14.

 [38] Embodiment 4

 [39] Please refer to FIG. 7, which illustrates a schematic diagram of the mechanism of the folding step stool of the fourth embodiment. The difference between the embodiment and the third embodiment is that the head of the front leg 11 is rotatably connected to the front end of the bottom surface of the seat unit 20, and the head of the rear leg 12 is rotatably connected to the middle of the bottom surface of the seat unit 20, so that the front leg 11 is behind and behind. The head 12 of the leg 12 forms a rotatable connection relationship.

 [40] Example 5

[41] Please refer to FIG. 8 , which is a schematic diagram of the mechanism of the folding step stool of the fifth embodiment. The difference between the embodiment and the first embodiment is that: the front leg 11 is rotatably connected to the front end of the bottom surface of the seat unit 20, The head of the rear leg 12 is rotatably coupled to the middle of the bottom surface of the seat unit 20 such that the front leg 11 and the head of the rear leg 12 form a rotatable connection relationship.

[42] Example 6

 [43] This embodiment differs from the first embodiment in that: the product is a folding ladder bar, which comprises a leg unit, a seat unit, a supporting unit and an intermediate unit, and a connection structure between the units of the folding ladder bar and The connection structure between the units of the folding step stool of the above five embodiments is the same.

 [44] Example 7

 [00] Please refer to FIG. 9 and FIG. 10, FIG. 9 is a perspective view showing the folding chair of the seventh embodiment in an unfolded state, and FIG. 10 is a perspective view showing the folding chair of the seventh embodiment in a folded state. A folding chair includes a leg unit 10, a seat unit 20, a support unit 30, and an intermediate unit 40.

 [46] The leg unit 10 includes a front leg 11 and a rear leg 12, and the front leg 11 and the rear leg 12 are pivotally connected together to form a rotatable connection between the front leg 11 and the rear leg 12 head. . A front crossbar 16 is fixed between the two front legs 11, and a rear crossbar 13 is fixed between the two rear legs. A locking post is protruded from the rear leg 12, and the rear leg 12 is further slidably provided with a sliding sleeve 14, and the sliding sleeve 14 is located above the locking post. The lower portion of the sliding sleeve 14 is provided with a locking groove 15, and the opening of the locking groove 15 is slightly larger than the outer diameter of the locking post.

 [47] Referring to FIG. 1 and FIG. 2, the seating unit 20 is a rigid panel, and the front surface of the bottom surface is pivotally connected to the top of the leg unit 10.

 The support unit 30 includes a support rod, and the middle portion of the support rod is pivotally connected to the rear of the seat unit 20 such that the support unit 30 and the seat unit 20 form a rotatable connection relationship. The bottom end of the support rod is pivotally connected to the sliding sleeve 14 such that the seat unit 20, the support unit 30 and the rear leg 12 are selectively locked into a triangular structure or the lock is released to be folded. Further, the backrest unit 50 is fixed between the portions of the support bar above the seat unit 20 as the user's backrest.

 [49] The front end of the intermediate unit 40 is rotatably coupled to the middle of the front leg 11, the rear end is rotatably coupled to the bottom end of the support unit 30, and the axis of rotation between the intermediate unit 40 and the support unit 30 and the support unit 30 and the sliding sleeve 14 The axes of rotation coincide.

The above is only the preferred embodiment of the present invention, and thus the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the specification should still be Within the scope of the invention patent. Industrial applicability

 [51] The present invention relates to a folding step stool and a folding ladder bar and a folding chair. The folding step stool comprises a leg unit, a seat unit, a supporting unit and an intermediate unit, and the seat unit, the supporting unit and the rear leg are selectively lockable It is connected into a triangular structure or loosely releases the lock to fold, has high support strength, high support stability, simple structure, convenient use, large-scale industrial production, and good industrial applicability.

Claims

Claim  [1] A folding step stool, characterized in that it comprises:  a leg unit comprising a front leg and a rear leg, the front leg and the rear leg forming a rotatable connection relationship;  a seating unit that is rotatably coupled to the leg unit;  a support unit, which forms a rotatable connection relationship with the seat unit, wherein the lower end of the support unit is connected to the rear leg such that the seat unit, the support unit and the rear leg are selectively locked into a triangular structure or released The lock is folded to fold;  The intermediate unit, which is used to lock the front and rear legs or release the lock.  [2] A folding step stool according to claim 1, wherein: the rear leg is slidably connected with a sliding member The lower end of the support unit is rotatably connected to the sliding member. [3] A folding step stool according to claim 2, wherein: a locking member is additionally provided for locking the relative position between the positioning slider and the rear leg or releasing the locking. [4] A folding step stool according to claim 2 or 3, wherein: the front end of the intermediate unit is rotatably coupled to the front leg, and the rear end is rotatably coupled to the sliding member. [5] A folding step stool according to claim 2 or 3, wherein: the front end of the intermediate unit is rotatably coupled to the front leg, and the rear end is rotatably coupled to the support unit. [6] A folding step stool according to claim 1 or 2 or 3, wherein: the support unit has a portion extending above the seat unit, the portion being provided with a backrest unit.  [7] A folding step stool according to claim 1 or 2 or 3, wherein: the front leg and the rear leg are pivotally connected.  [8] A folding step ladder according to claim 7, wherein the front portion of the bottom surface of the seat unit is pivotally connected to the leg unit, and the rear portion of the seat unit is pivotally connected to the support unit. [9] A folding step stool according to claim 1 or 2 or 3, wherein: the front leg and the rear leg are respectively pivotally connected to the front and middle front portions of the bottom of the seat unit, and the rear of the seat unit The part is pivotally connected to the support unit.  [10] A folding ladder, characterized in that it comprises: a leg unit comprising a front leg and a rear leg, the front leg and the rear leg forming a rotatable Connection relationship a seating unit that is rotatably coupled to the leg unit; a support unit, which forms a rotatable connection relationship with the seat unit, wherein the lower end of the support unit is connected to the rear leg such that the seat unit, the support unit and the rear leg are selectively locked into a triangular structure or released The lock is folded to fold; The intermediate unit, which is used to lock the front and rear legs or release the lock. A folding chair, characterized in that: it comprises: a leg unit comprising a front leg and a rear leg, the front leg and the rear leg forming a rotatable connection relationship; a seating unit that is rotatably coupled to the leg unit; a support unit, which forms a rotatable connection relationship with the seat unit, wherein the lower end of the support unit is connected to the rear leg such that the seat unit, the support unit and the rear leg are selectively locked into a triangular structure or released The lock is folded to fold; The intermediate unit, which is used to lock the front and rear legs or release the lock.