The utility model relates to a folding workbench for work at high place, particularly to an unlocking structure of workbench ladder.
The workbench, also known as the working platform, is a common tool for work at high place. It is mainly used to provide a working platform above the ground for users to stand to facilitate operations such as car washing. The workbench can be used not only indoors, but also outdoors and it can be used for car washing, decoration, maintenance, picking and storage.
As shown in
An unlocking structure 5 is provided at the hinged joint of the two ladders 1 and the platform 2 of the existing workbench and the unlocking structure 5 is used to lock the open and folded state of the two ladders 1 of workbench or the unlocking structure 5 is used to unlock the two ladders 1 to so that they can rotate below the ends of the platform 2. The problem with this prior art is: Since the existing unlocking structure 5 is arranged at the side of the platform 2 in the width direction, on the one hand, the operation is not convenient when the user unlocks the platform and on the other hand, as the unlocking structure 5 can often be touched inadvertently during the transportation and use of the workbench, it can directly cause the damage of the unlocking structure 5, resulting in the unlocking failure of the workbench.
Therefore, it's a subject for the utility model to solve the deficiencies of the above-mentioned prior art.
The purpose of the utility model is to provide an unlocking structure of workbench ladder.
In order to achieve the above purpose, the utility model applies the technical solution: An unlocking structure of workbench ladder, and the workbench comprises two ladders and a platform, and the upper ends of the two ladders are respectively hinged to the front and rear ends of the platform in the length direction; several rungs are provided at the bottom of the platform in parallel intervals along its length direction; the ladders comprise two columns and steps connected between the two columns; wherein:
An unlocking structure is arranged on each of the ladder respectively corresponding to its hinged joint with the platform. In the open state of the ladder, the unlocking structure is arranged along the length direction of the platform;
The unlocking structure comprises an operating button, a rotating lock tongue and a first elastic element;
the rotating lock tongue is vertically arranged along the height direction of the ladder and is rotatably arranged in the column, and the rotation axis of the rotating lock tongue is arranged along the width direction of the platform; the upper end of the rotating lock tongue is a locking hook, and the locking hook extends out of the top surface of the column and is locked and positioned on a locking plate at the bottom of the platform; The first elastic element acts between the rotating lock tongue and the column for driving the locking hook to move toward the locking plate, so that the locking hook is locked and positioned on the locking plate to achieve the locking of the ladder and the platform;
The operating button is protruded on the outer side of the column along the length direction of the platform, and acts on the rotating lock tongue to overcome the force of the first elastic element and drive the locking hook to move in a direction opposite to the locking plate, thereby unlocking the lock which locks the locking plate with the locking hook and achieving the unlocking of the ladder and the platform.
The above described technical solution is explained as follows:
1. In above described technical solution, the operating button is a press button and a first driving pin is positioned in the rotating lock tongue and the first driving pin is disposed parallel to the rotation axis of the rotating lock tongue; a locating slot or a locating hole is disposed on the press button in relative to the first driving pin, and the locating slot or the locating hole is sleeved on the first driving pin to become the point of force application of the press button to the rotating lock tongue; In the open state of the ladder, the press button applies a pressing force to the rotating lock tongue in the forward and backward direction perpendicular to the length direction of the column to force the rotation of the rotating lock tongue.
2. In above described technical solution, the press button is provided with a locating slot in relative to the first driving pin and the locating slot has a length, which constitutes a stroke of point of force application by the press button to the rotating lock tongue; and it also consists of a second elastic element and the second elastic element acts between the press button and the rotating lock tongue.
The second elastic element is a spring, and the design of the second elastic element with the locating slot could extend the pressing stroke of the press button and improve the user's feel.
3. In above described technical solution, the operating button is a push button, and the rotating lock tongue is provided with a bevel along the length direction of the column and a second driving pin is positioned in the push button in relative to the bevel and the second driving pin is disposed parallel to the rotation axis of the rotating lock tongue and it abuts the bevel to become a point of force application of the push button to the rotating lock tongue; In the open state of the ladder, the push button applies a pushing force to the bevel of the rotating lock tongue in the upward and downward direction parallel to the length direction of the column to force the rotation of the rotating lock tongue.
4. In above described technical solution, the first elastic element is a spring, and may also be a tension spring or a torsion spring.
5. In above described technical solution, the locking hook is provided with a slope along the length direction of the rotating lock tongue and the slope works with the locking plate. When the ladder is opened from the folding state, the slope gradually abuts the locking plate and when the ladder is fully opened, the locking hook is locked to the locking plate. It could achieve the automatic locking of the locking hook and the locking plate when the ladder is opened and achieve the automatic locking in the open state of the workbench through the design of the slope. It solves the problem that user of the prior art may forget to operate the unlocking mechanism for locking due to negligence, resulting in personal injury.
The working principle and advantages of the utility model are as follows: An unlocking structure of workbench ladder of the utility model comprises a platform and two ladders hinged to the two ends of the platform; wherein, the ladder is provided with an unlocking structure in relative to the hinged joint of the platform, and the unlocking structure comprises an operating button, rotating lock tongue and a first elastic element; the rotating lock tongue is rotatably arranged in the column and the upper end is a locking hook, and the locking hook is locked and located in the locking plate at the bottom of the platform; the first elastic element acts between the rotating lock tongue and the column to drive the locking hook to be positioned toward the locking plate to achieve the locking of the ladder and the platform; the operating button acts on the rotating lock tongue to overcome the first elastic element and drive the locking hook to move in a direction opposite to the locking plate, achieving the unlocking of the ladder and the platform.
Compared with the prior art, the utility model has the smart structure design and has practical and progressive feature such as convenient unlocking operation.
In the above figures: 1. Ladder; 2. Platform; 3. Rung; 4. End cover structure; 5. Unlocking structure; 6. Ladder; 61. Column; 62. Step; 7. Platform; 8. Rung; 9. Hinged joint; 17. Rotating lock tongue; 18. First spring; 19. Rotating axis; 20. Locking hook; 21. Locking plate; 22. Press button; 23. First driving pin; 24. Locating slot; 25. Second spring; 26. Push button; 27. Bevel; 28. Second driving pin; 29. Rotating member; 30. Opening; 31. slope.
With reference to the accompanying figures and embodiment, the present utility model will be described in detail.
Embodiment: As shown in
An unlocking structure is arranged on each of the ladder 6 respectively corresponding to its hinged joint with the platform 7, and the unlocking structure is used to lock the open and folded state of the two ladders 6 of workbench or the unlocking structure is used to unlock the two ladders 6 to so that they can rotate below the ends of the platform 7; in the open state of the ladder 6, the unlocking structure is arranged along the length direction of the platform 7;
The unlocking structure comprises an operating button, a rotating lock tongue 17 and a first spring 18;
The rotating lock tongue 17 is vertically arranged along the height direction of the ladder 61 and is rotatably arranged in the column 61, and the rotation axis 19 of the rotating lock tongue 17 is arranged along the width direction of the platform 7; the upper end of the rotating lock tongue 17 is a locking hook 20, and the locking hook 20 extends out of the top surface of the column 61 and is locked and positioned on a locking plate 21 at the bottom of the platform 7;
The first spring 18 acts between the rotating lock tongue 17 and the column 61 for driving the locking hook 20 to move toward the locking plate 21, so that the locking hook 20 is locked and positioned on the locking plate 21 to achieve the locking of the ladder 6 and the platform 7;
The operating button is protruded on the outer side of the column 61 along the length direction of the platform 7, and acts on the rotating lock tongue 17 to overcome the elastic force of the first spring 18 and drive the locking hook 20 to move in a direction opposite to the locking plate 21, thereby unlocking the lock which locks the locking plate 21 with the locking hook 20 and achieving the unlocking of the ladder 6 and the platform 7.
Wherein, as shown in
In the open state of the ladder 6, the press button 22 applies a pressing force to the rotating lock tongue 17 in the forward and backward direction perpendicular to the length direction of the column 61 to force the rotation of the rotating lock tongue.
Or, as shown in
Wherein, the locking hook 20 is provided with a slope 31 along the length direction of the rotating lock tongue 17 and the slope 31 works with the locking plate 21. When the ladder 6 is opened from the folding state, the slope 31 gradually abuts the locking plate 21 and when the ladder 6 is fully opened, the locking hook 20 is locked to the locking plate 21.
Wherein, it also includes a rotating member 29 and the rotating member 29 is fixed on the upper end of the column 61 and rotatably connected to the end of the platform 7 so that the ladder 6 is rotatably connected to the platform 7. The rotating member 29 is provided with two openings 30 for the passing through of the locking hooks of the operating button and the rotating lock tongue 17 respectively.
Compared with the prior art, the utility model has the smart structure design and has practical and progressive feature such as convenient unlocking operation.
It should be noted that the above described embodiments are only for illustration of technical concept and characteristics of present utility model with purpose of making those skilled in the art understand the present utility model, and thus these embodiments shall not limit the protection range of present utility model. The equivalent changes or modifications according to spiritual essence of present utility model shall fall in the protection scope of present utility model.
Number | Date | Country | Kind |
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201720972662.4 | Aug 2017 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2017/100074 | 8/31/2017 | WO |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2019/024163 | 2/7/2019 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
1639009 | Singley | Aug 1927 | A |
3554318 | Knight | Jan 1971 | A |
4967877 | Wallman | Nov 1990 | A |
5332062 | Revere | Jul 1994 | A |
5358069 | Krause | Oct 1994 | A |
5542639 | Wixey | Aug 1996 | A |
7690316 | Yoo | Apr 2010 | B2 |
8113316 | Sward | Feb 2012 | B2 |
9422768 | Yoo | Aug 2016 | B2 |
9512627 | Taron | Dec 2016 | B2 |
9752334 | Foley | Sep 2017 | B2 |
10012000 | Yoo | Jul 2018 | B2 |
10030447 | Pyros | Jul 2018 | B2 |
10035255 | Cindric | Jul 2018 | B2 |
10161184 | Lampe | Dec 2018 | B2 |
10738487 | Woodward | Aug 2020 | B2 |
D895844 | Woodward | Sep 2020 | S |
D895845 | Woodward | Sep 2020 | S |
10801219 | Parker | Oct 2020 | B2 |
10815680 | Woodward | Oct 2020 | B2 |
10858848 | Woodward | Dec 2020 | B2 |
20040238278 | Gibson | Dec 2004 | A1 |
20040238280 | Gibson | Dec 2004 | A1 |
20060169539 | Grebinoski | Aug 2006 | A1 |
20090133959 | Eriksson | May 2009 | A1 |
20100071996 | Huang | Mar 2010 | A1 |
20110056764 | Cross | Mar 2011 | A1 |
20140190769 | Parker | Jul 2014 | A1 |
20170275897 | Weadward | Sep 2017 | A1 |
20180171648 | Woodward | Jun 2018 | A1 |
20190226217 | Foley | Jul 2019 | A1 |
20190387887 | Yan | Dec 2019 | A1 |
Number | Date | Country |
---|---|---|
2248482 | Mar 1997 | CN |
2908669 | Jun 2007 | CN |
103990971 | Aug 2014 | CN |
107553457 | Jan 2018 | CN |
207245136 | Apr 2018 | CN |
2002-201794 | Jul 2002 | JP |
Entry |
---|
May 4, 2018 Search Report issued in International Patent Application No. PCT/CN2017/100074. |
Number | Date | Country | |
---|---|---|---|
20200256070 A1 | Aug 2020 | US |