TWI729782B - Lateral stabilizer of working ladder - Google Patents

Abstract

The present invention refers to a lateral stabilization device for a work ladder, wherein the work ladder has a support foot, the support foot is provided with a bracket accommodating groove, the bottom side of the support foot is fixedly connected with a lateral stabilization device, and the lateral stabilization device has a rotary A socket, the socket is provided with a rotating groove corresponding to the bracket accommodating groove, the rotating groove is inserted with a swing shaft, the swing shaft is sleeved with a first swing spring and a swing bracket, the swing bracket A ratchet wheel is fixedly connected, and ratchet teeth are distributed around the ratchet wheel; the first revolving spring is positioned with the screw seat and the ratchet wheel; a ratchet element is overlapped above the ratchet wheel, and the ratchet element is provided with a ratchet tooth The pawl; the screw slot is inserted with the element shaft pivotally connected to the ratchet element, the element shaft sleeve is provided with a second swing spring, the second swing spring is positioned on the screw seat and the ratchet element controls the ratchet The pawl engages the ratchet tooth.

Description

Lateral stabilizer of working ladder

The present invention is a lateral stabilizing device for a working ladder, wherein the working ladder is provided with a swing bracket that can expand the support range, and the swing bracket is used to make the working ladder more stable in the technical field.

The first press refers to a working ladder 10. When the working ladder 10 is in use, it is opened and supported according to the second ladder surface 101, and the ladder surface 101 is used for the personnel to step on the heights for construction. However, the width of the ladder surface 101 is limited, and the work Most of the ladders 10 are made of extremely lightweight aluminum alloy, so that the stability effect of the working ladder 10 in use is limited (as shown in Figure 1).

Therefore, manufacturers often restrict the scope of use of the work ladder 10, and must be accompanied by a guard to stabilize the work ladder 10 to ensure safety (as shown in Figure 1).

In view of the above, it is known that the conventional work ladder has a lack of stability in use and poor safety. Therefore, the inventor of the present case is urged to develop in the direction of stability and safety improvement. After the inventor of the present case has thought about it, he thought And expanding the scope of support is the best.

The working ladder of the present invention has an opening and closing body on the left and right sides. The outer side of the opening and closing body is provided with a support leg. The support leg is provided with a bracket recess recessed from the outer side. The stabilizing device has a screw socket, The screw socket is provided with a pair of screw grooves corresponding to the bracket accommodating grooves, an element hole is penetrated inside the screw grooves, a swing shaft is inserted into the screw grooves, and a first swing spring is sleeved on the swing shaft. And a swing bracket is pivotally connected, the swing bracket is fixedly connected with a ratchet wheel, and ratchet teeth are distributed around the ratchet wheel; the first swing spring is provided with a first positioning terminal positioned on the rotation seat, and a first positioning terminal positioned on the ratchet wheel And force the swing bracket to be screwed up and received into the first reset terminal of the bracket accommodating slot; a ratchet element is overlapped above the ratchet wheel, and one side of the ratchet element is provided with a pawl engaged with the ratchet tooth, the ratchet pendulum The other side of the element is provided with a disengagement pressing portion that penetrates the through hole of the element; the rotary groove is inserted with an element shaft pivotally connected to the ratchet element, the element shaft sleeve is provided with a second convolute spring, and the second convolute spring is provided There is a second positioning terminal positioned on the screw socket, and a second reset terminal positioned on the ratchet element to control the pawl to rotate down and engage the ratchet tooth.

The swing support of the present invention is further pivotally connected to the swing shaft at the lower end, and the upper end of the swing support is provided with a slide stop groove, and the slide stop groove is pivotally connected to a slide stop, and the stop slide is additionally provided with Anti-slip convex part protruding laterally. Then, the swing bracket is pivotally connected with the swing shaft at the lower end, and the upper end of the swing bracket is provided with a pedal protrusion protruding from the bracket accommodating slot.

The object of the present invention is that the supporting foot sole side is fixedly fixed with a lateral stabilizing device, and the lateral stabilizing device controls the swing bracket to rotate up and retract into the swing bracket when not in use according to the first swing spring, the ratchet wheel and the ratchet element. The substantial benefits of the bracket container.

[Learning]

10: work ladder

101: terrace

〔this invention〕

1: work ladder

11: Opening and closing body

13: Support feet

131: bracket container

2: Lateral stabilizer

21: Rotary socket

22: screw groove

23: component perforation

3: swing axis

4: The first convolute spring

41: The first positioning terminal

42: The first reset terminal

5: Swivel bracket

51: Ratchet

52: Ratchet

53: Stop slide groove

54: Stop slider

55: Anti-slip convex part

56: Foot protruding body

6: Spindle element

61: Pawl

62: Disengage the pressing part

7: Component axis

8: The second swing spring

81: The second positioning terminal

82: second reset terminal

Figure 1 is a schematic diagram of a conventional work ladder.

Figure 2 is a schematic diagram of a side view of the working ladder of the present invention.

Figure 3 is a three-dimensional exploded view of the work ladder of the present invention.

Figure 4 is a schematic diagram of the lateral stabilization device assembly of the present invention.

Figure 5 is a schematic diagram of the three-dimensional unfolding of the working ladder of the present invention with operation.

Figure 6 is a schematic diagram of the downward rotation operation of the lateral stabilizer of the present invention.

Figure 7 is a schematic diagram of the operation of the disengagement pressing part of the present invention.

In order to enable your reviewer to have a better understanding of the present invention, the following examples are used to illustrate it.

The present invention mainly provides a lateral stabilizing device 2 for a working ladder 1, wherein the working ladder 1 has an opening and closing body 11 on the left and right sides, and the opening and closing body 11 has a supporting leg 13 on the front and rear sides. At least one supporting leg 13 or Four of the supporting feet 13 are provided with a bracket accommodating groove 131 that is recessed from the outside, and at least one of the supporting feet 13 or the four supporting feet 13 is fixedly connected to the bottom side with a lateral stabilizing device 2, the lateral stabilizing device 2 There is a screw socket 21, the screw socket 21 is provided with a screw groove 22 corresponding to the bracket accommodating groove 131, a component hole 23 is penetrated inside the screw groove 22, and a rotating shaft is inserted into the screw groove 22 3. The swing shaft 3 is sleeved with a first swing spring 4, and a swing support 5 is pivotally connected to the swing support 5, the swing support 5 is fixedly connected to a ratchet wheel 51, and ratchet teeth 52 are distributed around the ratchet wheel 51; the first swing The spring 4 is provided with a first positioning terminal 41 positioned on the screw seat 21, and a first reset terminal 42 positioned on the ratchet 51 and forcing the swing bracket 5 to be screwed into the bracket accommodating groove 131; the ratchet A ratchet element 6 is overlapped above 51. One side of the ratchet element 6 is provided with a pawl 61 engaged with the ratchet tooth 52, and the other side of the ratchet element 6 is provided with a disengagement pressing portion that penetrates the element through hole 23. 62; The screw groove 22 is inserted with a component shaft 7 pivotally connected to the ratchet element 6, the component shaft 7 sleeves a second swing spring 8, the The second revolving spring 8 is provided with a second positioning terminal 81 positioned on the screw seat 21, and a positioning the ratchet element 6 controls the pawl 61 to rotate downward to engage the second reset terminal 82 of the ratchet 52 (such as : As shown in Figures 2, 3, 4, and 5).

The swing bracket 5 of the present invention is further pivotally connected to the swing shaft 3 at the lower end, and the upper end of the swing bracket 5 is provided with a sliding block groove 53 which is pivotally connected to a sliding block 54. The stop slider 54 is additionally provided with a non-slip protrusion 55 protruding laterally. Then, the upper end of the swing bracket 5 is provided with a pedal protrusion 56 protruding from the bracket accommodating slot 131 (as shown in Figures 2, 3, and 4).

The bottom side of the supporting leg 13 of the present invention is fixedly connected to the lateral stabilizing device 2, and the lateral stabilizing device 2 controls the swing bracket 5 according to the first swing spring 4, the ratchet wheel 51 and the ratchet element 6 When not in use, it is screwed up and retracted into the bracket accommodating groove 131 for positioning. When the work ladder 1 needs to expand the support range during use, it is only necessary to rotate the pedal protrusion 56 according to the hand and foot to rotate the swing bracket 5 downwards. At the same time, the ratchet wheel 51 follows the swing bracket. 5 Rotate the ratchet tooth 52 to force the pawl 61 until the swing bracket 5 can be supported at a supporting angle before being clamped and positioned. The swing bracket 5 can be rotated according to the situation of the ground object according to the anti-slip protrusion 55. The ground (such as: shown in Figures 5 and 6; the ground is not drawn and labeled here). Furthermore, the swing bracket 5 can be rotated to any suitable angle according to the condition of the ground object to be supported by the anti-slip protrusion 55 The ground (e.g. as shown in Figure 6; the ground is not drawn and numbered here). On the contrary, when the swing bracket 5 is to be folded, it is only necessary to press down the disengagement pressing portion 62 to move the pawl 61 upward to release the control engagement of the ratchet tooth 52, and at the same time, the first swing spring 4 is used to force The swing bracket 5 is screwed up and received into the bracket accommodating slot 131 (as shown in Figures 5 and 7).

From the above description, it can be seen that the lateral stabilizing device 2 fixed to the bottom side of the supporting leg 13 of the present invention is retracted into the bracket accommodating groove 131 according to the swing bracket 5 when the first swing spring 4 is not in use. The ratchet wheel 51 is matched with the ratchet element 6 to position the swing bracket 5 in the bracket accommodating groove 131 Within the range. When the work ladder 1 needs to expand the support range in use, the foot pedal protrusion 56 can be rotated to lower the swing bracket 5 to a proper position. At the same time, the swing bracket 5 can be adjusted according to the ratchet wheel 51. The ratchet tooth 52 is forced by the pawl 61 to control the available support angle of the swing bracket 5 before being clamped and positioned. On the contrary, when the swing bracket 5 is to be folded, it is only necessary to press the disengagement pressing portion 62 to make the ratchet The upward movement of the pawl 61 releases the excellent feature of controlling the engagement of the ratchet 52. According to this, it can be seen that the present invention does meet the invention patent requirements of novelty, advancement and industrial applicability.

The technical content and technical features of the present invention have been disclosed as above, and the present invention does have the invention patent requirements of novelty, advancement and industrial applicability. However, those familiar with this technology may still make various substitutions and modifications based on the disclosure of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to those disclosed in the embodiments, but should include various substitutions and modifications that do not deviate from the present invention, and are covered by the scope of the patent application for the present invention.

1: work ladder

11: Opening and closing body

13: Support feet

131: bracket container

2: Lateral stabilizer

21: Rotary socket

22: screw groove

23: component perforation

3: swing axis

4: The first convolute spring

41: The first positioning terminal

42: The first reset terminal

5: Swivel bracket

51: Ratchet

52: Ratchet

53: Stop slide groove

54: Stop slider

55: Anti-slip convex part

56: Foot protruding body

6: Spindle element

61: Pawl

62: Disengage the pressing part

7: Component axis

8: The second swing spring

81: The second positioning terminal

82: second reset terminal

Claims (4)

A lateral stabilizing device for a work ladder, wherein the work ladder has an opening and closing body on the left and right sides, and the front and back sides of the opening and closing body are each provided with a supporting leg, and at least one of the supporting legs is provided with a bracket cavity recessed from the outside, At least one side of the supporting foot sole is fixedly fixed with a lateral stabilizing device, the lateral stabilizing device has a screw socket, the screw socket is provided with a screw groove corresponding to the bracket accommodating groove, and a component is penetrated inside the screw groove Perforated, a swing shaft is inserted into the rotating slot, the swing shaft sleeves a first swing spring, and a swing bracket is pivotally connected to the swing bracket, and the swing bracket is fixedly connected to a ratchet wheel, and ratchet teeth are distributed around the ratchet wheel; The first swing spring is provided with a first positioning terminal positioned on the screw seat, and a first reset terminal positioned on the ratchet and forcing the swing bracket to rotate into the bracket accommodating slot; the upper part of the ratchet is overlapped There is a ratchet element, one side of the ratchet element is provided with a pawl that engages the ratchet tooth, and the other side of the ratchet element is provided with a disengagement pressing part that penetrates the element through hole; the screw slot is inserted with a pivot The element shaft of the ratchet element, the element shaft sleeve is provided with a second swing spring, the second swing spring is provided with a second positioning terminal positioned on the screw seat, and a positioning of the ratchet element controls the pawl under The second reset terminal of the ratchet is screwed and engaged. The lateral stabilization device for a work ladder according to claim 1, wherein the swing support is pivotally connected to the swing shaft at the lower end, and the upper end of the swing support is provided with a sliding block groove, the sliding block groove Another sliding block is pivotally connected, and the sliding block is additionally provided with a non-slip convex portion protruding laterally. The lateral stabilization device for a work ladder according to claim 1, wherein the swing support is pivotally connected to the swing shaft at the lower end, and the upper end of the swing support is provided with a foot protrusion protruding from the support slot body. The lateral stabilization device of a work ladder according to claim 1, wherein the support leg of the opening and closing body is further recessed with the support accommodating groove from the outside, and the support foot side The lateral stabilization device is also fixedly connected.

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