TWM630197U - ladder - Google Patents

Abstract

A ladder includes two ladder frames, a first connecting rod, a second connecting rod and a supporting component. Each of the two ladder frames has an opposite pivot end and a movable end. The two pivoting ends of the two ladder frames are pivotally connected to each other, and the two movable ends of the two ladder frames can move relative to each other, so that the two ladder frames can pivot between a retracted position and an open position. One end of the first link and one end of the second link are respectively pivoted on the second ladder frame. The support component is located between the two ladder frames, and the other end of the first link and the other end of the second link are pivoted on the support component. When the second ladder frame is pivoted from the retracted position to the open position, the support assembly moves in a direction away from the second pivot end of the second ladder frame.

Description

ladder

The present invention relates to a ladder, in particular to a ladder with supporting components.

In daily life, a wooden ladder or an aluminum ladder is often used as a work aid for cleaning work at higher places, picking up items at a high place, repairing, painting walls, etc., so that workers can climb the ladder. On the other hand, it is convenient and smooth to complete the work.

Most of the common ladder structures on the market are in the shape of a human-shaped ladder body, which is unfolded and supported on the ground by the two ladder frames, allowing users to climb or sit on the ladder to perform operations. However, in the process of using this type of ladder, only two ladder frames are used to form a support state of two fixed points. It is easy to cause the ladder to fall due to the shift of the operator's center of gravity, so that the people sitting on the ladder can not respond and fall. fall injured.

The utility model provides a ladder, which can avoid the problem that the ladder is easily toppled due to the deviation of the operator's center of gravity.

A ladder disclosed in an embodiment of the present invention includes two ladder frames, a first link, a second link and a support assembly. Each of the two ladder frames has an opposite pivot end and a movable end. The two pivot ends of the two ladder frames are pivotally connected to each other, and the two movable ends of the two ladder frames can move relative to each other, so that the two ladder frames can be located between a retracted position and an open position. pivot between. One end of the first link and one end of the second link are respectively pivoted on the second ladder frame. The support component is located between the two ladder frames, and the other end of the first link and the other end of the second link are pivoted on the support component. When the second ladder frame is pivoted from the retracted position to the open position, the support assembly moves in a direction away from the second pivot end of the second ladder frame.

According to the ladder disclosed in the above-mentioned embodiment, the support assembly is connected to the two ladder frames through the pivotable first link and the second link, so that when the two ladder frames are pivoted from the retracted position to the open position, the The support assembly moves in a direction away from the two pivot ends of the two ladder frames. In this way, the support assembly can be supported on the ground in the process of opening the second ladder frame, so as to improve the operational convenience of the ladder. In addition, when the support assembly is supported on the ground, the ladder not only uses the second ladder frame for support, but also uses the support assembly as an additional support to strengthen the stability of the ladder, thus avoiding the overturning of the ladder due to the deviation of the operator's center of gravity The problem.

The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the principle of the present invention, and provide further explanation of the scope of the patent application of the present invention.

1,1a: Ladder

5: Hinged parts

10: Ladder frame

11: Pivot end

12: Active end

13: Pedal

14: The first link

15: Second link

16: The third link

17: Fourth Link

141, 151, 161, 171: Clamping holes

20: Support components

21: Pedestal

211: Bearing surface

212: The first riser section

2121: Perforation

213: Second riser section

2131: Perforation

214: Chute

215: Handle structure

216, 217: Guidance Structure

2161, 2171: Chute

2162, 2172: First gap

2163, 2173: Second gap

218: perforation

219: Internal thread structure

219a: Third riser section

2191a: Guidance Structures

2192a: Grooving

220a: cover plate

221a: accommodating slot

22: Tripod

23a: jack

30: The first latch

40: Second latch

50: Pressing parts

51: External thread structure

60a, 70a: Rocker

81a: Assembly seat

82a: connecting rod

83a: Joystick

80a: Drives

90a: latch

91a: Limiting convex part

W1,W2,W3: width

FIG. 1 is a three-dimensional schematic diagram of a ladder disclosed according to a first embodiment of the present invention.

FIG. 2 is a perspective view of FIG. 1 from another perspective.

FIG. 3 is a schematic three-dimensional cross-sectional view of FIG. 1 .

FIG. 4 is a schematic cross-sectional view along the sectional line 4-4 of FIG. 3 .

FIG. 5 is a schematic perspective view of the ladder of FIG. 1 in an open position.

FIG. 6 is a schematic cross-sectional view of FIG. 5 .

FIG. 7 is another schematic cross-sectional view of FIG. 5 .

FIG. 8 is a schematic perspective view of a ladder disclosed according to a second embodiment of the present invention.

FIG. 9 is a schematic three-dimensional cross-sectional view of FIG. 8 .

FIG. 10 is a schematic cross-sectional view of the latch of FIG. 9 in a release position.

FIG. 11 is a schematic cross-sectional view of the latch member of FIG. 10 in an engaged position.

FIG. 12 is a schematic partial enlarged cross-sectional view of FIG. 8 .

FIG. 13 is a schematic cross-sectional view along the sectional line 12-12 of FIG. 11 .

FIG. 14 is a partially enlarged cross-sectional schematic view of the latch of FIG. 12 after being rotated.

FIG. 15 is a schematic cross-sectional view of the pin of FIG. 13 in the socket separated from the tripod.

Please refer to FIGS. 1 to 4 . FIG. 1 is a three-dimensional schematic diagram of a ladder disclosed according to a first embodiment of the present invention. FIG. 2 is a perspective view of FIG. 1 from another perspective. FIG. 3 is a schematic three-dimensional cross-sectional view of FIG. 1 . FIG. 4 is a schematic cross-sectional view along the sectional line 4-4 of FIG. 3 .

In this embodiment, the ladder 1 includes two ladder frames 10 , a first link 14 , a second link 15 and a support assembly 20 . In addition, the ladder 1 may further include a third link 16 and a fourth link 17 .

The two ladder frames 10 each have a pivot end 11 and a movable end 12 opposite to each other. The two pivoting ends 11 of the two ladder frames 10 are pivotally connected to each other, for example, through at least one hinge member 5, and the two movable ends 12 of the two ladder frames 10 can move relative to each other, so that the two ladder frames 10 can be in a retracted position (as shown in FIG. 1) and an open position (see Figure 5 first). In this embodiment, when the two ladder frames 10 are in the folded position, the two ladder frames 10 are close to each other, that is, The movable ends 12 of the two ladder frames 10 are close to each other. The state of the second ladder frame 10 in the open position will be described in detail in the following paragraphs. In addition, in this embodiment, each of the two ladder frames 10 has a plurality of pedals 13 located between the pivot end 11 and the movable end 12 for the operator to step on the ladder 1 to perform operations. In addition, the two pivot ends 11 of the second ladder frame 10 shield the hinge member 5 , and hide the hinge member 5 , so as to increase the aesthetics of the ladder 1 .

One end of the first link 14 and one end of the third link 16 are pivoted to one of the ladder frames 10 and located on opposite sides of the pedals 13 of the ladder frame 10 . One end of the second link 15 and one end of the fourth link 17 are pivoted to one of the ladder frames 10 and located on opposite sides of the pedals 13 of the ladder frame 10 . The first link 14 , the second link 15 , the third link 16 and the fourth link 17 have fastening holes 141 , 151 , 161 and 171 respectively.

In this embodiment, the first link 14 , the second link 15 , the third link 16 and the fourth link 17 are, for example, flat plates, but not limited thereto. In other embodiments, the first link, the second link, the third link and the fourth link can be L-shaped plates to lift the first link, the second link, the third link and the The structural strength and durability of the fourth link.

The support assembly 20 is located between the two ladder frames 10 , and the support assembly 20 includes a base 21 and a bipod 22 .

The base 21 has a bearing surface 211 , two first vertical plate portions 212 and two second vertical plate portions 213 . The bearing surface 211 of the base 21 faces where the two pivot ends 11 of the two ladder frames 10 are pivotally connected. . The two first riser portions 212 are, for example, parallel to each other and a distance apart. The other end of the first link 14 and the other end of the second link 15 are pivoted between the two first vertical plate portions 212 of the base 21 . The two second vertical plate portions 213 are, for example, parallel and spaced apart by a distance. The other end of the third link 16 and the other end of the fourth link 17 are pivoted between the two second vertical plate portions 213 of the base 21 . In this embodiment, each of the two first riser parts 212 has a through hole 2121 , and each of the two second riser parts 213 has a through hole 2131 .

In this embodiment, the base 21 further has a chute 214 , and the bearing surface 211 faces away from the chute 214 . The bipod 22 is slidably inserted on two opposite sides of the base 21 , a part of the bipod 22 is located in the chute 214 , and the other part of the bipod 22 is located outside the chute 214 .

In this embodiment, the base 21 further has a handle structure 215 and two guide structures 216 and 217 . The handle structure 215 and the two guide structures 216 and 217 are both located on the bearing surface 211 , and the handle structure 215 is located between the two guide structures 216 and 217 . In addition, the guide structure 216 is located between the two first riser parts 212 and the handle structure 215 , and the guide structure 217 is located between the two second riser parts 213 and the handle structure 215 . The guide structure 216 has a chute 2161 , a first notch 2162 and a second notch 2163 , wherein the through holes 2121 of the two first vertical plate portions 212 are aligned with the chute 2161 in the longitudinal direction of the chute 2161 . The notch 2162 and the second notch 2163 communicate with the chute 2161 in the direction of the short axis of the chute 2161 , and the second notch 2163 is closer to the first link 14 and the second link 15 than the first notch 2162 . Similarly, the guide structures 217 each have a sliding slot 2171 , a first notch 2172 and a second notch 2173 , wherein the through holes 2131 of the two second vertical plate portions 213 are aligned in the longitudinal direction of the sliding slot 2171 . The first notch 2172 and the second notch 2173 communicate with the runner 2171 in the direction of the short axis of the runner 2171, and the second notch 2173 is closer to the third link 16 and the fourth link than the first notch 2172. Rod 17.

In this embodiment, the ladder 1 further includes a first latch 30 and a second latch 40 .

The first latch 30 is slidably and rotatably disposed on the sliding groove 2161 of the guide structure 216, and the first latch 30 can be in a first release position (as shown in FIG. 3 ) and a first engagement position (see Figure 6 first). When the first latching member 30 is in the first release position, the first latching member 30 can be engaged with or disengaged from the first notch 2162 of the guide structure 216 by rotating the first latching member 30 . When the first latching member 30 is located at the first engaging position, the first latching member 30 can be engaged with or disengaged from the second notch 2163 of the guide structure 216 by rotating the first latching member 30 .

The second latch 40 is slidably and rotatably disposed on the sliding groove 2171 of the guide structure 217 , and the second latch 40 can be in a second release position (as shown in FIG. 3 ) and a second engagement position (see Figure 6 first). When the second latch 40 is located at the second release position, the second latch 40 can be engaged with or disengaged from the first notch 2172 of the guide structure 217 by rotating the second latch 40 . When the second latching member 40 is located at the second engaging position, the second latching member 40 can be engaged or disengaged from the second notch 2173 of the guide structure 217 by rotating the second latching member 40 .

In this embodiment, the ladder 1 further includes two pressing members 50, and the base The seat 21 also has two through holes 218 communicating with the chute 214 . The two pressing members 50 are movably disposed on the base 21 and respectively pass through the two through holes 218 of the base 21 to press the bipod 22 . Specifically, the two pressing members 50 have external thread structures 51 respectively, and the base 21 has internal thread structures 219 respectively located in the two through holes 218 . The external thread structures 51 of the two pressing members 50 are respectively screwed with the internal thread structures 219 in the two through holes 218 . By rotating the pressing member 50 , the pressing member 50 can move upward to reduce the force of the pressing foot 22 , or move downward to increase the force of the pressing foot 22 .

Next, the use of the ladder 1 will be described, in which the two ladder frames 10 are in the retracted position, and the first latch 30 and the second latch 40 are in the first release position and the second release position, respectively. At this time, the first latch 30 is separated from the securing hole 141 of the first link 14 and the securing hole 151 of the second link 15 , and the second latch 40 is separated from the securing hole of the third link 16 161 and the securing hole 171 of the fourth connecting rod 17 , and the first latching member 30 and the second latching member 40 are respectively latched to the first notches 2162 and 2172 of the two guide structures 216 and 217 .

Next, please refer to Figures 5 to 7. FIG. 5 is a schematic perspective view of the ladder of FIG. 1 in an open position. FIG. 6 is a schematic partial cross-sectional view of FIG. 5 . FIG. 7 is another partial cross-sectional schematic diagram of FIG. 5 .

When the ladder 1 is to be used for operation, the second ladder frame 10 can be erected on the ground, and then the second ladder frame 10 can be pivoted from the retracted position to the open position. During the pivoting process of the second ladder frame 10 from the retracted position to the open position, the movable ends 12 of the second ladder frame 10 move away from each other and pass through the first link 14 , the second link 15 , the third link 16 and the first link 14 . The fourth link 17 drives the integral support assembly 20 to move away from the pivot end 11 of the second ladder frame 10 move to lower the support assembly 20 . When the second ladder frame 10 is pivoted from the retracted position to the open position, the bipod frame 22 of the support assembly 20 touches the ground. In this way, the support assembly 20 can be supported on the ground during the opening process of the second ladder frame 10 , so as to improve the operational convenience of the ladder 1 . In addition, when the support assembly 20 is supported on the ground, the ladder 1 not only uses the second ladder frame 10 for support, but also uses the support assembly 20 as an additional support to enhance the stability of the ladder 1, thus avoiding the deviation of the operator's center of gravity. The problem is that the ladder is easy to fall over.

When the second ladder frame 10 is in the open position, the securing hole 141 of the first link 14 and the securing hole 151 of the second link 15 are aligned with the through holes 2121 of the two first vertical plate parts 212 , and the third link The securing hole 161 of the rod 16 and the securing hole 171 of the fourth connecting rod 17 are aligned with the through holes 2131 of the two second vertical plate portions 213 . At this time, the first latching member 30 and the second latching member 40 can be rotated to separate the first latching member 30 and the second latching member 40 from the first notches 2162 and 2172 of the two guiding structures 216 and 217 , respectively. Next, slide the first latch 30 and the second latch 40 to move the first latch 30 and the second latch 40 from the first release position and the second release position to the first engagement position and the second release position, respectively. The second engagement position. At this time, when the first latching member 30 and the second latching member 40 are located at the first engaging position and the second engaging position, respectively, the first latching member 30 passes through the through holes 2121 of the two first vertical plate portions 212 . , the fixing hole 141 of the first connecting rod 14 and the fixing hole 151 of the second connecting rod 15, the first connecting rod 14 and the second connecting rod 15 are fixed, and the second latch 40 passes through the two second vertical The through holes 2131 of the plate portion 213 , the fixing holes 151 of the third link 16 and the fixing holes 161 of the fourth link 17 are used to fix the third link 16 and the fourth link 17 . In this way, the first link 14 , the second link 15 and the third link 16 and the fourth link 17 cannot be pivoted, and the second ladder frame 10 is maintained in the open position. Next, when the first latching member 30 and the second latching member 40 are located at the first engaging position and the second engaging position, respectively, the first latching member 30 and the second latching member 40 are rotated, so that the first latching member 30 and the second latching member 40 are rotated. A latch 30 and a second latch 40 are respectively engaged with the second notches 2163 and 2173 of the two guide structures 216 and 217 to position the first latch 30 and the second latch 40 on the first The engaging position and the second engaging position.

It should be noted that the third link 16 and the fourth link 17 are optional components. In other embodiments, the ladder may omit the third link and the fourth link, and correspondingly, the ladder may also omit the second latching member, and the base may omit the guiding structure for guiding the second latching member.

In addition, the base 21 is not limited to having the guide structures 216 and 217 . In other embodiments, the first latching member and the second latching member may be two latches of detachable bases. Under such a configuration, when the two ladder frames are in the open position, the two bolts pass through the two first and second vertical plate parts of the base, the first connecting rod, the second connecting rod, and the ground. rod and fourth link.

On the other hand, the first vertical plate portion 212 and the second vertical plate portion 213 of the base 21 are optional structures. In other embodiments, the base may not have the first riser portion and the second riser portion.

Furthermore, the first latch 30 and the second latch 40 of the ladder 1 are optional components. In other embodiments, the ladder may not have the first latch and the second latch.

In this embodiment, when the second ladder frame 10 is in the open position, The second pressing member 50 can be loosened slightly to reduce the force of the second pressing member 50 pressing against the bipod 22 . At this time, the bipods 22 can be pulled out a distance from the base 21 respectively, so that the bipods 22 can help the ladder 1 stand on the ground more stably.

It should be noted that the bipod 22 is not limited to be slidably disposed on the base. In other embodiments, the bipod can be non-slidably disposed on the base. For example, the bipod can be integrally formed with the base and cannot slide relative to the base.

In addition, the structure of the support assembly 20 is not intended to limit the present invention. In other embodiments, as long as the second ladder frame is pivoted from the retracted position to the open position, the support assembly can be moved in a direction away from the two pivoting ends of the second ladder frame.

When the ladder 1 is used and the two ladder frames 10 are to be pivoted from the open position to the closed position, the first latch 30 and the second latch 40 can be rotated to lock the first latch 30 and the second latch The first latch 30 and the second latch 40 are respectively moved from the first engagement position and the second engagement position to The first release position and the second release position. Next, hold the ladder frame 10 with one hand, and exert force on the handle structure 215 of the base 21 with the other hand to lift the support assembly 20 up. During the lifting process of the support assembly 20 , the support assembly 20 will drive the second ladder frame 10 to pivot and retract from the open position through the first link 14 , the second link 15 , the third link 16 and the fourth link 17 . Location.

In this embodiment, the handle structure 215 of the base 21 is helpful for the folding action of the ladder 1, but the handle structure 215 of the base 21 is not used to limit the present invention. In other embodiments, the base may have no handle structure.

It should be noted that the two ladder frames 10 are not limited to be connected only through the first link 14 , the second link 15 , the third link 16 , the fourth link 17 and the support assembly 20 . In other embodiments, other connecting rods or support members may be added between the two ladder frames to connect the two ladder frames, thereby enhancing the structural strength and stability of the ladder 1 .

Next, please refer to Figures 8 to 13. FIG. 8 is a schematic perspective view of a ladder disclosed according to a second embodiment of the present invention. FIG. 9 is a schematic three-dimensional cross-sectional view of FIG. 8 . FIG. 10 is a schematic cross-sectional view of the latch of FIG. 9 in a release position. FIG. 11 is a schematic cross-sectional view of the latch member of FIG. 10 in an engaged position. FIG. 12 is a schematic partial enlarged cross-sectional view of FIG. 8 . FIG. 13 is a schematic cross-sectional view along the sectional line 12-12 of FIG. 11 .

The ladder 1a of this embodiment is similar to the ladder 1 described with reference to FIG. 1 to FIG. 7 , and the difference between the two is mainly in the way of actuating the latch and the positioning way of the tripod, so the following mainly focuses on this embodiment The latch, the tripod, and their related components and structural arrangements are described. As for the parts of the ladder 1 a of this embodiment that are the same as the ladder 1 described with reference to FIGS. 1 to 7 , please refer to the foregoing paragraphs, and will not be repeated.

In this embodiment, the base 21 further has two third vertical plate portions 219a and a cover plate portion 220a. The two third vertical plate portions 219 a protrude from the bearing surface 211 of the base 21 . Two opposite sides of each third vertical plate portion 219 a are respectively connected to one of the first vertical plate portions 212 and one of the second vertical plate portions 213 of the base 21 , and the bearing surface 211 and the first vertical plate portion of the base 21 are respectively connected. 212, the second vertical plate portion 213 and the two third vertical plate portions 219a together form an accommodating groove 221a. The two through holes 218 of the base 21 communicate with the accommodating groove 221a and the Chute 214. The cover plate portion 220 a is fixed to the side of the two third vertical plate portions 219 a away from the bearing surface 211 of the base 21 .

In this embodiment, the ladder 1a further includes two rocking members 60a, 70a and a driving member 80a, and the driving member 80a includes an assembly base 81a, a connecting rod 82a and an operating rod 83a. The two rocking members 60 a , 70 a and the assembly seat 81 a are located in the accommodating groove 221 a of the base 21 . Two opposite ends of the rocking member 60a are pivoted on one side of the assembly seat 81a and one end of the first latch member 30, respectively, and two opposite ends of the rocking member 70a are pivoted on the other side of the assembly base 81a and the second latch, respectively One end of the lock 40 . The connecting rod 82a passes through the cover portion 220a of the base 21. The opposite ends of the connecting rod 82a are respectively connected to the assembly seat 81a and the operating rod 83a, and the operating rod 83a and the connecting rod 82a together form a T-shaped structure.

As shown in Figures 10 and 11, when the second ladder frame 10 is in the open position, the operating rod 83a of the rotatable driving member 80a drives the assembly seat 81a to rotate through the connecting rod 82a, so that the assembly seat 81a passes through the rocking member 60a, 70a drives the first latch member 30 to slide from the first release position to the first engagement position, and the assembly base 81a drives the second latch member 40 to slide from the second release position to the second engagement position through the rocking member 70a. When the first latching member 30 and the second latching member 40 are located at the first engaging position and the second engaging position, respectively, the first latching member 30 passes through the through holes 2121 of the two first vertical plate portions 212 , the first The fixing hole 141 of the connecting rod 14 and the fixing hole 151 of the second connecting rod 15 are used to fix the first connecting rod 14 and the second connecting rod 15 , and the second latch 40 passes through the two second vertical plate portions 213 The through hole 2131, the fixing hole 161 of the third connecting rod 16 and the fixing hole 171 of the fourth connecting rod 17, and the third connecting rod 16 and the fourth connecting rod 17 are fixed. like As a result, the first link 14 , the second link 15 , the third link 16 and the fourth link 17 cannot pivot, and the second ladder frame 10 is maintained at the open position.

Conversely, when the second ladder frame 10 is to be pivoted from the retracted position to the open position, the operating rod 83a of the driving member 80a can be counter-rotated to drive the assembly seat 81a to rotate through the connecting rod 82a, so that the assembly seat 81a can pass through the rocking member 60a The first latch 30 is driven to slide from the first engagement position to the first release position, and the assembly seat 81a drives the second latch 40 to slide from the second engagement position to the second release position through the rocking member 70a. In this way, the first locking member 30 and the second locking member 40 unlock the first link 14 , the second link 15 , the third link 16 and the fourth link 17 . Next, hold the ladder frame 10 with one hand, and apply force on the operating rod 83a of the driving member 80a with the other hand to lift the support assembly 20 up. During the lifting process of the support assembly 20 , the support assembly will drive the two ladder frames 10 to pivot from the open position to the closed position through the first link 14 , the second link 15 , the third link 16 and the fourth link 17 . .

Next, please refer to FIGS. 11 and 12 . FIG. 11 is another schematic cross-sectional view of FIG. 8 . FIG. 12 is yet another schematic cross-sectional view of FIG. 8 .

In this embodiment, the ladder 1a further includes two latches 90a, the two latches 90a are respectively rotatable and can move up and down in a straight line on the two third vertical plate portions 219a of the base 21, and each of the bipods 22 has a plurality of Jack 23a. In detail, each of the two pins 90a has a limiting protrusion 91a. The two third vertical plate portions 219a of the base 21 each have a guiding structure 2191a. The guide structure 2191a has a through slot 2192a, the maximum width W1 on the long axis of the through slot 2192a is greater than the maximum width W3 of the limiting protrusion 91a of the plug 90a, and the maximum width W2 on the short axis of the through slot 2192a is smaller than the plug 90a For the maximum width W3 of the limiting protrusion 91a, the long axis and the short axis of the through groove 2192a are, for example, perpendicular to each other. Each pin 90a rotatably passes through the slot 2192a of the guide structure 2191a of the third vertical plate portion 219a and the through hole 218 of the base 21, and is inserted into one of the insertion holes 23a of the foot stand 22, so that the foot stand 22 cannot move relative to the base 21 .

When the plug 90a is inserted into one of the insertion holes 23a of the tripod 22, and the limiting protrusion 91a of the plug 90a is aligned with the short axis of the slot 2192a of the guide structure 2191a, the guide structure 2191a will restrict the plug 90a from being disengaged The movement in the direction of the insertion hole 23a of the foot bracket 22 keeps the plug 90a inserted into the insertion hole 23a of the foot bracket 22 .

Next, please refer to FIGS. 14 and 15 . FIG. 14 is a partially enlarged cross-sectional schematic view of the latch of FIG. 12 after being rotated. FIG. 15 is a schematic cross-sectional view of the pin of FIG. 13 in the socket separated from the tripod. When the plug 90a is to be disengaged from the socket 23a of the tripod 22, the plug 90a can be rotated so that the limiting protrusion 91a of the plug 90a is aligned with the long axis of the through groove 2192a of the guide structure 2191a. At this time, when the latch 90a is pulled upward, the limiting protrusion 91a of the latch 90a is not restricted by the guide structure 2191a and can pass through the through slot 2192a of the guide structure 2191a, so the latch 90a can be disengaged from the insertion hole 23a of the foot frame 22 , and the restriction that the tripod 22 cannot move relative to the base 21 is lifted. Next, after the limiting protrusion 91a of the plug 90a passes through the through groove 2192a of the guide structure 2191a, rotating the plug 90a can make the limiting protrusion 91a of the plug 90a align with the short axis of the guide structure 2191a through the groove 2192a, Therefore, the upwardly moved latch 90a is supported by the guide structure 2191a, and will not fall down due to the action of gravity, so as to facilitate the subsequent operation of adjusting the position of the tripod 22 relative to the base 21 .

After adjusting the position of the foot stand 22 relative to the base 21 , the pin 90 a can be dropped by rotating the pin 90 a and inserted into the other socket 23 a of the foot stand 22 to fix the foot stand 22 .

According to the ladder disclosed in the above-mentioned embodiment, the support assembly is connected to the two ladder frames through the pivotable first link and the second link, so that when the two ladder frames are pivoted from the retracted position to the open position, the The support assembly moves in a direction away from the two pivot ends of the two ladder frames. In this way, the support assembly can be supported on the ground in the process of opening the second ladder frame, so as to improve the operational convenience of the ladder. In addition, when the support assembly is supported on the ground, the ladder not only uses the second ladder frame for support, but also uses the support assembly as an additional support to strengthen the stability of the ladder, thus avoiding the overturning of the ladder due to the deviation of the operator's center of gravity The problem.

Although the present invention is disclosed by the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with the similar arts can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of patent protection for a new model shall be determined by the scope of the patent application attached to this specification.

1: Ladder

5: Hinged parts

10: Ladder frame

11: Pivot end

12: Active end

13: Pedal

14: The first link

15: Second link

16: The third link

17: Fourth Link

20: Support components

21: Pedestal

22: Tripod

50: Pressing parts

Claims (10)

A ladder, comprising: two ladder frames, each having a pivot end and a movable end opposite to each other, the two pivot ends of the two ladder frames are pivotally connected to each other, and the two movable ends of the two ladder frames are relatively movable, The two ladder frames can be pivoted between a retracted position and an open position; a first link and a second link, one end of the first link and one end of the second link are pivoted respectively set on the two ladder frames; and a support component located between the two ladder frames, the other end of the first link and the other end of the second link are pivoted on the support component; wherein, when the two ladders When the frame is pivoted from the retracted position to the open position, the support assembly moves in a direction away from the two pivot ends of the two ladder frames. The ladder as claimed in claim 1, further comprising a first latching member, the first latching member is slidably disposed on the support member, the first link and the second link are pivoted on the support member one side of the ladder and each has a clamping hole; when the two ladder frames are in the open position, the clamping hole of the first link is aligned with the clamping hole of the second link, and the first link The latching element can slide between a first engaging position and a first releasing position; when the first latching element is in the first engaging position, the first latching element passes through the first link The securing hole of the second link and the securing hole of the second link; when the first latch is in the first release position, the first latch is separated from the securing hole of the first link with the securing hole of the second link. The ladder of claim 2, wherein the support element has a guide structure, the guide structure has a chute, a first notch and a second notch, the first notch and the second notch communicate with the a chute, and the second gap is closer to the first link and the second link than the first gap, and the first latch is slidably and rotatably disposed on the chute of the guide structure; when When the first latching member is in the first release position, the first latching member is used to be rotated to be locked in the first notch; when the first latching member is in the first engaging position, the first latching member The first latching member is used for being rotated to be fastened to the second notch. The ladder according to claim 2, further comprising a rocking member and a driving member, two opposite ends of the rocking member are respectively pivoted to the first latch member and the driving member, and the driving member can rotate relative to the supporting component , and the first latching member is driven to slide between the first engaging position and the first releasing position through the rocking member. The ladder as claimed in claim 4, wherein the driving member comprises an assembly base, a connecting rod and an operating rod, two opposite ends of the connecting rod are respectively connected to the assembly base and the operating rod, the operating rod and the connecting rod The rods together form a T-shaped structure, and two opposite ends of the rocking member are respectively pivoted on the first latch member and the assembly seat of the driving member. The ladder as claimed in claim 2, further comprising a third link, a fourth link and a second latching member, one end of the third link and one end of the first link are respectively pivoted therein One of the opposite sides of the ladder frame, one end of the fourth link and one end of the second link are respectively pivoted on the opposite two sides of the other ladder frame, the other end of the third link and the fourth link The other end of the connecting rod is pivoted on the other side of the support assembly, the second latch is slidably disposed on the support assembly, the third connecting rod and the fourth connecting rod each have a fixing hole, when When the two ladder frames are in the open position, the securing hole of the third link is aligned with the securing hole of the fourth link, and the second latch can be in a second engaging position and sliding between a second release position; when the second latch member is in the second engagement position, the second latch member passes through the securing hole of the third link and the hole of the fourth link the securing hole; when the second latch member is in the second release position, the second latch member is separated from the securing hole of the third link and the securing hole of the fourth link. The ladder of claim 1, wherein the supporting component comprises a base and a bipod, the other end of the first link and the other end of the second link are pivoted on the base, and the two legs The frame is slidably arranged on the base. The ladder according to claim 7, further comprising two bolts, the base has a chute and two through holes, the bipod is movably disposed in the chute of the base, and each bipod has multiple a socket, the two pins are movably disposed on the base, respectively pass through the two through holes of the base, and are respectively inserted into one of the sockets and the other of the sockets of the tripod. one of the sockets of the tripod. The ladder according to claim 7, further comprising two pressing pieces, the base has a chute and two through holes, the bipod is movably disposed in the chute of the base, the two pressing pieces It is movably arranged on the base and passes through the two through holes of the base to press against the bipod. The ladder of claim 7, wherein the base has a bearing surface and a handle structure, the bearing surface faces where the two pivot ends of the two ladder frames are pivotally connected, and the handle structure is located on the bearing face.

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