CN219661294U - Step stool hook locking mechanism and step stool - Google Patents

Abstract

The utility model provides a step stool hook locking mechanism and a step stool, and belongs to the technical field of step stools. The locking structure comprises a limiting block and a hook main body, wherein the hook main body comprises a hook, a connecting part and an unlocking button, and two ends of the connecting part are respectively connected with the hook and the unlocking button. The stopper can be fixed the hook main part to the bench face, spacing connection structure on the stopper makes the connecting portion of hook main part have certain removal space between stopper and bench face, when the step ladder is expanded, the bench face is in the tilt state, the hook main part can be under the action of gravity to the crosspiece direction removal, after the bench face rotates to the level from the tilt state, the crosspiece can be blocked into the hook upside naturally, when the unblock, remove the unlocking button and make connecting portion keep away from hook one side upwards the lifting can make the hook to keeping away from the crosspiece direction removal, the arm of force that forms with the help of unlocking button and connecting portion can be very light breaks away from hook and crosspiece.

Description

Step stool hook locking mechanism and step stool

Technical Field

The utility model belongs to the technical field of step stools, and relates to a step stool hook locking mechanism and a step stool with the step stool hook locking mechanism.

Background

In the prior art, a hook of a step stool locking mechanism is provided with a rotating shaft, and the hook rotates along the rotating shaft under the action of guiding force so as to hook a crosspiece or a pedal; in addition, the hook is directly arranged at the rear of the stool surface, the hook hooks the rear crosspiece by dead weight, the hooks in the two ladder stool locking mechanisms can not move up and down and left and right, the crosspiece is clamped into the hook and separated from the hook by the elasticity of the hook, and the hook and the crosspiece can be separated only by great force when the hook is unlocked, so that the hook locking mechanism capable of being fixed with the crosspiece and convenient to unlock by the movement of the hook is required to be designed.

For example, chinese patent discloses a step stool and its installation method [ application number: 01125580.3] comprising a frame having a front leg and a rear leg, the rear leg being attached to the front leg for relative pivotal movement between an open use position and a combined storage position; a pedal coupled to the front leg, the pedal being pivotable relative to the front leg between a horizontal use position and a storage position; a connector comprising a body and a shaft connected to the body and the pedal; the above-mentioned problems also exist with an engagement elbow attached to the body.

Disclosure of Invention

The utility model aims to solve the problems and provide a step stool hook locking mechanism.

The present utility model has been made in view of the above problems, and an object of the present utility model is to provide a bench employing a bench hook locking mechanism.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a step ladder hook locking mechanical system, includes locking structure, locking structure include stopper and hook main part, hook main part include hook, connecting portion and unlocking button, connecting portion both ends link to each other with hook and unlocking button respectively, the hook set up down and hook on collude groove portion orientation and keep away from unlocking button one side, connecting portion and stopper link to each other just the stopper on have the spacing connection structure that is used for connecting portion reciprocates, controls.

In this embodiment, the stopper can be fixed the hook main part to the bench face on, and the spacing connection structure on the stopper makes the connecting portion of hook main part have certain removal space between stopper and bench face, and when the step ladder was expanded, the bench face was in the tilt state, and the hook main part can be moved to the crosspiece direction under the action of gravity, and after the bench face rotated to the level from the tilt state, the crosspiece can be blocked into the hook upside naturally, and when the unblock, removal unlocking button makes connecting portion keep away from hook one side upwards the lifting can make the hook to keeping away from the crosspiece direction removal, and arm of force that forms with the help of unlocking button and connecting portion can be very relaxed breaks away from hook and crosspiece.

In the step stool hook locking mechanism, the limiting connection structure comprises a mounting groove formed by two groups of protruding ribs protruding on the limiting block, the width of the connection portion is equal to that of the mounting groove, and the connection portion is inserted into the mounting groove and can move up and down and left and right in the mounting groove.

In the step stool hook locking mechanism, the depth of the mounting groove is larger than the height of the connecting part. The degree of depth of mounting groove is greater than the high messenger hook of connecting portion and keeps away from hook one side and upwards lifts when unblock to make the hook keep away from the crosspiece towards the opposite direction, and need not rely on the mode through overcoming the hook elasticity to unlock.

In the step stool hook locking mechanism, two second protruding ribs are further arranged on two sides of the connecting portion respectively, the two second protruding ribs are located on two sides of the mounting groove, and the distance between the two second protruding ribs located on the same side of the connecting portion is larger than the length of the mounting groove. The setting No. two protruding muscle can carry out spacingly to the extreme position that connecting portion can remove in the mounting groove, can fix the hook through the cooperation of No. two protruding muscle and No. one protruding muscle after making the hook catch the crosspiece, and the interval between two No. two protruding muscle of homonymy is greater than the length of mounting groove and can the hook main part and left and right movement, and also can make connecting portion keep away from hook one side and have the space of upwards moving when the unblock.

In the step stool hook locking mechanism, the step stool hook locking mechanism further comprises an upper limiting plate, wherein the upper limiting plate is arranged on one side of the mounting groove close to the hook and is positioned on the upper side of the connecting portion. The upper limiting plate is arranged to limit the moving direction of the unlocking button, so that the unlocking button can only move towards one side of the driving hook away from the crosspiece.

In the step stool hook locking mechanism, the unlocking button is positioned on one side of the connecting part close to the hook.

The step stool adopting the step stool hook locking mechanism comprises two supporting side plates, wherein two folding stool surfaces which are arranged in an up-down layered mode are arranged between the two supporting side plates, the two folding stool surfaces are connected through a linkage structure, one supporting leg is respectively and rotatably connected to the two supporting side plates, a crosspiece is fixedly connected between the two supporting legs, and the crosspiece is connected with the linkage structure;

the locking structure is arranged on the lower end face of the folding stool surface positioned at the upper side, and when the folding stool surface rotates to be horizontal, the folding stool surface positioned at the upper side abuts against the crosspiece and the locking structure locks the crosspiece.

In this embodiment, rotate two supporting legs that connect through the crosspiece and can rotate through two folding bench faces of linkage structure drive, when folding bench face rotated to the level, the folding bench face that is located the upside was supported and is leaned on the crosspiece, and the crosspiece can improve folding bench face's stability, through locking structure locking crosspiece after, the supporting leg can not very easily to be close to folding bench face direction removal or the step bench can not be from expanding the state to folding state, need break away from hook and crosspiece earlier just can rotate the supporting leg.

In the step stool, the two sides of the front end of the folding stool are respectively connected with the supporting side plates in a rotating way through the rotating shafts, the linkage structure comprises two linkage rods which are respectively arranged on the two sides of the folding stool surface, the two ends of each linkage rod are respectively connected with the side faces of the rear end of the folding stool surface in a rotating way, the linkage rods are close to one side of the folding stool surface which is positioned on the upper side and are further connected with driving rods in a rotating way, and one ends of the driving rods, which are far away from the linkage rods, are connected with the supporting legs in a rotating way. When the supporting legs are rotated, the supporting legs can drive the linkage rod to move through the driving rod, and the linkage rod can enable the two folding stool surfaces to rotate along the rotating shaft at the joint of the two folding stool surfaces and the supporting side plate, so that the two folding stool surfaces are unfolded to be horizontal or folded to be parallel to the supporting side plate.

In the step stool, the upper limiting plate is fixed on the lower end face of the upper folding stool surface, two studs with screw holes are arranged at the bottom of the upper folding stool surface, and two sides of the limiting plate are also provided with screw holes corresponding to the two studs. The bolt passes through the threaded hole and is screwed into the screw hole in the stud, so that the limiting block can be fixed on the folding stool surface.

In the step stool, the unlocking button is positioned on the inner side of the folding stool surface. The unlocking button is arranged on the inner side of the folding stool surface, so that influence on the appearance of the folding stool surface can be reduced.

Compared with the prior art, the utility model has the advantages that:

1. the stopper can be fixed the hook main part to the bench face, spacing connection structure on the stopper makes the connecting portion of hook main part have certain removal space between stopper and bench face, when the step ladder is expanded, the bench face is in the tilt state, the hook main part can be under the action of gravity to the crosspiece direction removal, after the bench face rotates to the level from the tilt state, the crosspiece can be blocked into the hook upside naturally, when the unblock, remove the unlocking button and make connecting portion keep away from hook one side upwards the lifting can make the hook to keeping away from the crosspiece direction removal, the arm of force that forms with the help of unlocking button and connecting portion can be very light breaks away from hook and crosspiece.

2. The degree of depth of mounting groove is greater than the high messenger hook of connecting portion and keeps away from hook one side and upwards lifts when unblock to make the hook keep away from the crosspiece towards the opposite direction, and need not rely on the mode through overcoming the hook elasticity to unlock.

3. The setting No. two protruding muscle can carry out spacingly to the extreme position that connecting portion can remove in the mounting groove, can fix the hook through the cooperation of No. two protruding muscle and No. one protruding muscle after making the hook catch the crosspiece, and the interval between two No. two protruding muscle of homonymy is greater than the length of mounting groove and can the hook main part and left and right movement, and also can make connecting portion keep away from hook one side and have the space of upwards moving when the unblock.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a three-dimensional view of a locking structure;

FIG. 2 is a three-dimensional view of a step stool;

FIG. 3 is a schematic cross-sectional view of a step stool;

FIG. 4 is a partial schematic view of the step stool in a tilted state of the folding stool surface;

fig. 5 is a partial schematic view of the folding stool surface.

In the figure, a limiting block 1, a hook main body 2, a hook 3, a connecting part 4, an unlocking button 5, a first convex rib 6, a mounting groove 7, a second convex rib 8, an upper limiting plate 9, a supporting side plate 10, a folding stool surface 11, supporting legs 12, a crosspiece 13, a linkage rod 14, a driving rod 15, a stud 16 and a screw hole 17.

Detailed Description

As shown in fig. 1, a step stool hook locking mechanism comprises a locking structure, wherein the locking structure comprises a limiting block 1 and a hook main body 2, the hook main body 2 comprises a hook 3, a connecting part 4 and an unlocking button 5, two ends of the connecting part 4 are respectively connected with the hook 3 and the unlocking button 5, the hook 3 is downwards arranged, a groove part on the hook 3 faces to one side of the remote unlocking button 5, the connecting part 4 is connected with the limiting block 1, and the limiting block 1 is provided with a limiting connection structure for the connecting part 4 to move up and down and left and right.

In this embodiment, the stopper can be fixed the hook main part to the bench face, the spacing connection structure on the stopper makes the connecting portion of hook main part have certain removal space between stopper and bench face, as shown in fig. 3, when the step ladder is expanded, the bench face is in the tilt state, the hook main part can be under the action of gravity to the crosspiece orientation remove, after the bench face rotates to the level from the tilt state, the crosspiece can be blocked into the hook upside naturally, as shown in fig. 4, when the unblock, remove the unlocking button and make connecting portion keep away from hook one side upwards the lifting can make the hook to keeping away from the crosspiece orientation remove, the arm of force that forms with the help of unlocking button and connecting portion can very light break away from hook and crosspiece.

After the hook hooks the crosspiece, the fixed hook through the spacing connection structure is more stable than the fixed hook through the stool surface rear edge in the prior art.

Specifically speaking, the spacing connection structure includes the mounting groove 7 that is formed by two sets of protruding setting on stopper 1 a protruding muscle 6, connecting portion 4's width equal with the width of mounting groove 7, connecting portion 4 insert in mounting groove 7 and can reciprocate, control in mounting groove 7, the degree of depth of mounting groove 7 is greater than the height of connecting portion 4. The depth of the mounting groove 7 is greater than the height of the connecting part 4, so that when the hook is unlocked, one side of the connecting part, which is far away from the hook, can be lifted upwards, and the hook can be far away from the crosspiece in the opposite direction, and the hook does not need to be unlocked in a mode of overcoming the elasticity of the hook.

Preferably, as shown in fig. 1, two second ribs 8 are further disposed on two sides of the connecting portion 4, the two second ribs 8 are located on two sides of the mounting groove 7, and a distance between the two second ribs 8 located on the same side of the connecting portion 4 is greater than a length of the mounting groove 7. The setting No. two protruding muscle can carry out spacingly to the extreme position that connecting portion can remove in the mounting groove, can fix the hook through the cooperation of No. two protruding muscle and No. one protruding muscle after making the hook catch the crosspiece, and interval between two No. two protruding muscle 8 of homonymy is greater than the length of mounting groove 7 can the hook main part and can control the removal, and also can make connecting portion keep away from hook one side and have the space of upwards moving when the unblock.

Preferably, as shown in conjunction with fig. 1 and 4, an upper limiting plate 9 is further included, and the upper limiting plate 9 is disposed on the side of the mounting groove 7 near the hook 3 and on the upper side of the connecting portion 4. The upper limiting plate is arranged to limit the moving direction of the unlocking button, so that the unlocking button can only move towards one side of the driving hook away from the crosspiece.

In this embodiment, as shown in fig. 1, the unlocking knob 5 is located on the side of the connecting portion 4 close to the hook 3, and the unlocking knob may be disposed on the side of the connecting portion away from the hook.

As shown in fig. 2 and 3, the step stool with the step stool hook locking mechanism comprises two supporting side plates 10, wherein two folding stool surfaces 11 which are arranged in a vertically layered manner are arranged between the two supporting side plates 10, the two folding stool surfaces 11 are connected through a linkage structure, the two supporting side plates 10 are respectively and rotatably connected with a supporting leg 12, a crosspiece 13 is fixedly connected between the two supporting legs 12, and the crosspiece 13 is connected with the linkage structure; the locking structure is arranged on the lower end face of the folding stool surface 11 positioned on the upper side, and when the folding stool surface 11 rotates to be horizontal, the folding stool surface 11 positioned on the upper side abuts against the crosspiece 13 and the locking structure locks the crosspiece 13.

In this embodiment, two supporting legs connected through the crosspiece can rotate through two folding bench faces of linkage structure drive, and when folding bench face 11 rotated to the level, folding bench face 11 that is located the upside supported and leaned on crosspiece 13, and the crosspiece can improve folding bench face's stability, through locking structure locking crosspiece after, the supporting leg can not very easily be to being close to folding bench face direction removal or step stool can not be from expanding the state to folding state, need break away from hook and crosspiece earlier just can rotate the supporting leg.

Specifically speaking, the both sides of folding bench face 11 front end are connected through pivot and support curb plate 10 rotation respectively, the linkage include two gangbars 14 that set up respectively in folding bench face 11 both sides, gangbar 14 both ends are connected with the side rotation of folding bench face 11 rear end respectively, gangbar 14 be close to folding bench face 11 one side that is located the upside and still rotate and be connected with actuating lever 15, actuating lever 15 keeps away from gangbar 14 one end and leg 12 rotation connection. When the supporting legs are rotated, the supporting legs can drive the linkage rod to move through the driving rod, and the linkage rod can enable the two folding stool surfaces to rotate along the rotating shaft at the joint of the two folding stool surfaces and the supporting side plate, so that the two folding stool surfaces are unfolded to be horizontal or folded to be parallel to the supporting side plate.

Specifically, as shown in fig. 1, 4 and 5, the upper limiting plate 9 is fixed on the lower end surface of the upper folding stool surface 11, two studs 16 with screw holes are arranged at the bottom of the upper folding stool surface 11, and two screw holes 17 corresponding to the two studs 16 are also arranged at two sides of the limiting plate 1. The bolt passes through the threaded hole and is screwed into the screw hole in the stud, so that the limiting block can be fixed on the folding stool surface.

Preferably, as shown in connection with fig. 3 and 4, the unlocking knob 5 is located inside the folding stool surface 11. The unlocking button 5 is arranged on the inner side of the folding stool surface 11, so that the influence on the appearance of the folding stool surface can be reduced.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although the stopper 1, the hook main body 2, the hook 3, the connecting portion 4, the unlocking knob 5, the first bead 6, the mounting groove 7, the second bead 8, the upper stopper plate 9, the support side plate 10, the folding stool surface 11, the support leg 12, the crosspiece 13, the link lever 14, the driving lever 15, the stud 16, the screw hole 17, etc. are used more herein, these terms are used only for convenience in describing and explaining the essence of the present utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims (9)

1. The utility model provides a step stool hook locking mechanical system, includes locking structure, its characterized in that, locking structure include stopper (1) and hook main part (2), hook main part (2) include hook (3), connecting portion (4) and unlocking button (5), connecting portion (4) both ends link to each other with hook (3) and unlocking button (5) respectively, hook (3) set up down and hook (3) on collude groove portion orientation and dissociate locking button (5) one side far away, connecting portion (4) and stopper (1) link to each other just stopper (1) on have and be used for connecting portion (4) to reciprocate, limit connection structure of controlling the removal.

2. The step stool hook locking mechanism according to claim 1, wherein the limiting connection structure comprises a mounting groove (7) formed by two groups of first ribs (6) protruding on the limiting block (1), the width of the connection part (4) is equal to the width of the mounting groove (7), and the connection part (4) is inserted into the mounting groove (7) and can move up and down and left and right in the mounting groove (7).

3. The step stool hook locking mechanism of claim 2, wherein the depth of the mounting groove (7) is greater than the height of the connecting portion (4).

4. The locking mechanism for the step stool hook according to claim 2, wherein two second ribs (8) are further arranged on two sides of the connecting portion (4), the two second ribs (8) are located on two sides of the mounting groove (7), and the distance between the two second ribs (8) located on the same side of the connecting portion (4) is larger than the length of the mounting groove (7).

5. The step stool hook locking mechanism according to claim 2, further comprising an upper limit plate (9), the upper limit plate (9) being provided on a side of the installation groove (7) close to the hook (3) and on an upper side of the connecting portion (4).

6. The step stool hook locking mechanism of any one of claims 1-5, wherein the unlocking knob (5) is located on the side of the connecting portion (4) adjacent to the hook (3).

7. A step stool adopting the step stool hook locking mechanism as claimed in any one of claims 1-6, which is characterized by comprising two support side plates (10), wherein two folding stool surfaces (11) which are arranged in an up-down layered manner are arranged between the two support side plates (10), the two folding stool surfaces (11) are connected through a linkage structure, one support leg (12) is respectively and rotatably connected to the two support side plates (10), a crosspiece (13) is fixedly connected between the two support legs (12), and the crosspiece (13) is connected with the linkage structure;

the locking structure is arranged on the lower end face of the folding stool surface (11) positioned at the upper side, and when the folding stool surface (11) rotates to be horizontal, the folding stool surface (11) positioned at the upper side abuts against the crosspiece (13) and the locking structure locks the crosspiece (13).

8. The step stool according to claim 7, wherein two sides of the front end of the folding stool surface (11) are respectively connected with the support side plate (10) in a rotating way through a rotating shaft, the linkage structure comprises two linkage rods (14) which are respectively arranged at two sides of the folding stool surface (11), two ends of each linkage rod (14) are respectively connected with the side faces of the rear end of the folding stool surface (11) in a rotating way, one side, close to the folding stool surface (11) positioned at the upper side, of each linkage rod (14) is also connected with a driving rod (15) in a rotating way, and one end, far away from each linkage rod (14), of each driving rod (15) is connected with the support leg (12) in a rotating way.

9. The step stool according to claim 7, characterized in that the unlocking button (5) is located inside the folding stool surface (11).