CN211021778U - Folding locking mechanism for step stool - Google Patents

Abstract

The folding locking mechanism for the step stool comprises a stool plate and stool legs, wherein the stool legs and the stool plate are rotatably arranged, and the folding locking mechanism also comprises a locking mechanism capable of locking the stool legs to rotate, and the locking mechanism comprises a first connecting sheet and a bolt; the first connecting piece is fixedly connected with the stool plate, the first connecting piece is provided with a limiting hole for the bolt to fall into, and the bolt and the stool leg are radially and axially movably arranged in a limiting way.

Description

Folding locking mechanism for step stool

Technical Field

The utility model relates to a folding locking mechanical system for step stool belongs to household articles technical field.

Background

Publication (bulletin) No.: CN2899603Y discloses a folding stool, hinges several boards and forms an organic whole, and each board is exactly a square stool when expandeing completely, and the structure is solid, and the bearing is good. After being folded, the utility model becomes a square, the occupied space can be reduced to the maximum extent, and the appearance is regular. Adopt articulated mode to realize collapsible among the above-mentioned technical scheme between stool plating and the bench leg, after the bench leg rotated to target in place, above-mentioned articulated mode can't be to bench leg locking, and the security is poor during the use, and is unstable after folding.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a folding locking mechanism for a step stool which has reasonable structural design and is convenient to fold.

The utility model provides a technical scheme that above-mentioned problem adopted is: the folding locking mechanism for the step stool comprises a stool plate and stool legs, wherein the stool legs and the stool plate are rotatably arranged, and the folding locking mechanism comprises a first connecting piece and a plug pin; the first connecting piece is fixedly connected with the stool plate, the first connecting piece is provided with a limiting hole for a plug pin to fall into, and the plug pin and the stool leg are radially and movably arranged in a limiting axial direction; the handle is combined with the bolt.

Furthermore, the stool also comprises a second connecting piece fixedly connected with the stool legs, and the second connecting piece is rotatably connected with the first connecting piece.

Furthermore, the bolt further comprises an elastic piece, wherein the elastic piece is connected with the bolt and applies acting force which is applied to the bolt and tends to limit the hole.

Further, the outer edge of the first connecting piece is provided with a guide surface expanding outwards.

Further, the stool comprises a cross baffle piece for installing the bolt, the cross baffle piece is connected with the stool legs, the cross baffle piece is provided with two baffle pieces, the baffle pieces are provided with hole sites for the bolt to pass through, a gap distance is reserved between the two baffle pieces, the elastic piece is arranged between the two baffle pieces, one end of the elastic piece abuts against the baffle pieces, and the other end of the elastic piece abuts against a pin shaft on the bolt.

Furthermore, the hole position is provided with a vacant position for the pin shaft to pass through, and after the installation is finished, the pin shaft and the vacant position are staggered.

Furthermore, the stool comprises a wrench, wherein the wrench is provided with a first rotating connecting part and a second rotating connecting part, the first rotating connecting part is rotatably connected with the stool plate or the stool legs, and the second rotating connecting part is rotatably connected with the bolt.

Furthermore, a transverse blocking part extends outwards from the handle.

Furthermore, the second connecting piece comprises a reference surface, a first side surface and a second side surface, the second side surface is fixedly connected with the reference surface, the first side surface is fixedly connected with the reference surface or the second side surface, the stool legs are rectangular, the reference surface and the second side surface are respectively attached to two adjacent side surfaces of the stool legs, and the first side surface is attached to the end surfaces of the stool legs.

Further, still include support piece, support piece includes reference bar and support bar, reference bar and support bar fixed connection, reference bar and bench board fixed connection, and when the step ladder used, the bench leg expanded, and the support bar is contradicted first side.

Furthermore, the stool plate is provided with a through hole.

Compared with the prior art, the utility model, have following advantage and effect: the utility model adopts a folding structure, the volume is small during folding, and the transportation is convenient; the stool legs can be locked when being unfolded or folded, so that the use safety is improved, and the operation is convenient.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a shown in fig. 1.

Fig. 3 is a schematic structural diagram of the wrench according to the embodiment of the present invention.

Fig. 4 is a partially enlarged schematic view of a portion B shown in fig. 3.

Fig. 5 is a schematic structural view of the handle according to the embodiment of the present invention.

Fig. 6 is a partially enlarged schematic view of a portion C shown in fig. 3.

Fig. 7 is a schematic structural diagram of another embodiment of the present invention.

Fig. 8 is a partially enlarged schematic view of a portion D shown in fig. 3.

Fig. 9 is a schematic structural view of the second connecting piece of the present invention.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Example 1

As shown in fig. 1 to 9, in the folding locking mechanism for a step stool of the present embodiment, the step stool includes a stool plate 1 and a stool leg 2, the stool leg 2 and the stool plate 1 are rotatably disposed, and the folding locking mechanism of the present embodiment includes a first connecting piece 3 and a latch 4; the first connecting piece 3 is fixedly connected with the stool plate 1, the first connecting piece 3 is provided with a limiting hole 30 for the bolt 4 to fall into, and the bolt 4 and the stool leg 2 are radially limited and axially movably arranged. As one of the specific embodiments, the stool leg 2 is provided with a through hole for the bolt 4 to pass through, the bolt 4 is arranged in the through hole, the radial direction of the bolt 4 is limited by the through hole, the bolt is axially movable, and the bolt 4 is simultaneously arranged in the through hole and the limiting hole 30 to lock the stool leg 2.

The embodiment also comprises a second connecting piece 5 fixedly connected with the stool legs 2, and the second connecting piece 5 is rotatably connected with the first connecting piece 3. The second connecting piece 5 can increase the wall thickness of the stool leg 2, and the stability of the rotational connection between the stool leg 2 and the stool plate 1 is more excellent.

The present embodiment further comprises an elastic member 6, wherein the elastic member 6 is connected to the bolt 4 and applies a force to the bolt 4 tending to limit the hole 30. Under the normal condition, bolt 4 tends to the situation of locking stool leg 2, has promoted the security performance of locking.

The outer edge of the first connecting piece 3 in this embodiment is provided with a guide surface 31 expanding outward. The outer side in this technical feature is the direction that tends to move away from the stool plate 1, and the guide surface 31 is expanded outward relative to the first connecting piece 3; when the stool legs 2 are switched from the folded state to the use state, the bolt 4 is firstly abutted by the guide surface 31 expanding outwards, and then abutted by the first connecting piece 3 and moved to the limiting hole 30, so that automatic locking can be realized. Preferably, the guide surface 31 and the first connecting piece 3 are integrally formed, and the guide surface 31 is machined during manufacturing.

In this embodiment, the stool further includes a cross-piece 7 for installing the plug pin 4, the cross-piece 7 is connected to the stool leg 2, the cross-piece 7 is provided with two blocking pieces 71, the blocking pieces 71 are provided with hole sites through which the plug pin 4 can pass, a gap distance is provided between the two blocking pieces 71, the elastic piece 6 is arranged between the two blocking pieces 71, one end of the elastic piece 6 abuts against the blocking pieces 71, and the other end of the elastic piece 6 abuts against the pin shaft 41 on the plug pin 4. The pin shaft 41 is fixedly connected with the bolt 4. The hole position is provided with a vacancy 70 for the pin shaft 41 to pass through, and after the installation is completed, the pin shaft 41 is staggered with the vacancy 70. When the mechanism is installed, the elastic part 6 is a spring, the pin shaft 41 can be fixed on the pin 4 firstly, the spring is arranged between the two blocking pieces 71, the pin 4 rotates to the position where the pin shaft 41 corresponds to the vacant position 70, after the pin shaft 41 moves to abut against the spring, the pin 4 rotates to the position where the pin shaft 41 and the vacant position 70 are staggered, and the assembly can be completed. The pin 41 does not need to be overcome when being installed.

This embodiment still includes spanner 8, spanner 8 is equipped with first rotation connecting portion and second rotation connecting portion, first rotation connecting portion rotate with bench board 1 or bench leg 2 and be connected, and the second rotates connecting portion and 4 rotations of bolt and is connected. The rotation connection in the embodiment includes but is not limited to hinge connection, and also includes rotation connection which rotates relatively after the surfaces are interfered with each other.

The embodiment also comprises a handle 9, and the handle 9 is combined on the bolt 4. Usually, the handle 9 is crossed with the moving direction of the bolt 4, which has the advantage of labor saving operation.

In another installation manner of the handle 9 described in this embodiment, the handle 9 is combined with the bolt 4, and the handle 9 penetrates through the transverse blocking member 7 and extends outward to form the transverse blocking member 7.

The second connecting sheet 5 of this embodiment includes a first side surface 51, a second side surface 52 and a reference surface 53, the second side surface 52 is fixedly connected with the reference surface 53, and the first side surface 51 is fixedly connected with the second side surface 52 or the reference surface 53; the stool legs 2 are rectangular, and preferably, every two of the reference surface 53, the first side surface 51 and the second side surface 52 are perpendicular to each other; the reference surface 53 and the second side surface 52 are attached to adjacent sides of the leg 2, and the first side surface 51 is attached to the end surface of the leg 2. Three sides of the stool leg 2 are surrounded by the second connecting piece 5, the second connecting piece 5 has a reinforcing effect on the stool leg 2, and meanwhile, the connection between the second connecting piece 5 and the stool leg 2 is more stable.

The bench is characterized by further comprising a supporting member 11, wherein the supporting member 11 comprises a reference bar 111 and a supporting bar 112, the reference bar 111 is fixedly connected with the supporting bar 112, preferably, the reference bar 111 and the supporting bar 112 extend in parallel, the reference bar 111 is fixedly connected with the bench 1, when the bench is used, the bench legs 2 are unfolded, and the supporting bar 112 abuts against the first side surface 51. Preferably, support piece 11 is steel material, and support piece 11 adopts the billet to buckle and be to be with the U-shaped hook, and the long limit is reference strip 111, and the minor face is support bar 112, and this structural strength is better, and when the bench used, the effort of bench leg 2 to support bar 112 was born and is dispersed by support piece 11, and it compares and directly contradicts the bench and promotes on using the durability by a wide margin.

Furthermore, the stool plate 1 is provided with a through hole, and a hand can be inserted into the through hole, so that the ladder stool is convenient to move.

The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (10)

1. The folding locking mechanism for the step stool comprises a stool plate and stool legs, wherein the stool legs and the stool plate are rotatably arranged; the first connecting piece is fixedly connected with the stool plate, the first connecting piece is provided with a limiting hole for a plug pin to fall into, and the plug pin and the stool leg are radially and movably arranged in a limiting axial direction; the stool leg is characterized by also comprising a second connecting piece fixedly connected with the stool leg, wherein the second connecting piece is rotatably connected with the first connecting piece; the second connecting piece comprises a reference surface, a first side surface and a second side surface, the second side surface is fixedly connected with the reference surface, the first side surface is fixedly connected with the reference surface or the second side surface, the stool legs are rectangular, the reference surface and the second side surface are respectively attached to two adjacent side surfaces of the stool legs, and the first side surface is attached to the end surface of the stool legs.

2. A folding locking mechanism for a ladder as claimed in claim 1, further comprising a resilient member connected to the pin to apply a force to the pin tending to restrain the aperture.

3. The folding lock mechanism for a step stool as set forth in claim 1, wherein an outer edge of said first connecting piece is provided with a guide surface expanding outward.

4. The folding locking mechanism for a stepladder as defined in claim 2, further comprising a cross member for mounting the pin, the cross member being connected to the legs, the cross member having two blocking pieces, the blocking pieces having holes for the pin to pass through, the two blocking pieces having a gap distance therebetween, the elastic member being disposed between the two blocking pieces, one end of the elastic member abutting against the blocking piece, and the other end of the elastic member abutting against the pin shaft of the pin.

5. A folding locking mechanism for a ladder stool as claimed in claim 4, wherein the aperture site is provided with a void through which the pin shaft passes, the pin shaft being offset from the void upon completion of installation.

6. The folding locking mechanism for a ladder of claim 1, further comprising a handle, the handle being coupled to the latch.

7. The folding locking mechanism for a step ladder of claim 1, further comprising a wrench having a first rotatable connecting portion rotatably connected to the stool plate or the stool legs and a second rotatable connecting portion rotatably connected to the latch.

8. A folding locking mechanism for a ladder as defined in claim 6, wherein said handle extends laterally outwardly beyond the cross stop.

9. The folding locking mechanism of a step ladder as claimed in claim 1, further comprising a support member, the support member comprising a reference bar and a support bar, the reference bar being fixedly connected to the stool plate, the step ladder being adapted such that when in use, the legs are unfolded and the support bar abuts the first side.

10. The folding locking mechanism for a step ladder as claimed in any one of claims 1 to 9, wherein the stool plate is provided with a through hole.

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