Ladder with object carrying function

Abstract

The invention discloses a ladder with a loading function. The ladder comprises a tool tray and a positioning structure, the tool tray is only used in a herringbone ladder state and is detachably assembled with the ladder; during use, the tool tray is positioned at the top of the ladder through the positioning structure; during storage, the tool tray is positioned at the side part of the ladder through the positioning structure; the positioning structure comprises a first positioning part and a second positioning part; the first positioning part comprises a first clamping groove and a first elastic clamping hook connected to the tool tray, so that when the first elastic clamping hook is clamped into the first clamping groove, the tool tray is locked at the top of the ladder; the second positioning part comprises a second clamping groove and a second elastic clamping hook connected to the tool tray, so that when the second elastic clamping hook is clamped into the second clamping groove, the tool tray is locked on the first ladder frame or the second ladder frame. According to the scheme, through the arrangement of the positioning structure, the tool tray and the ladder are rapidly connected and locked, and operation convenience is provided for a user through the simple structure and the same operation button.

Description

Technical Field

[0001] The invention relates to a climbing device, in particular to a ladder with a carrying function. Background Art

[0002] When people use ordinary ladders to perform high-altitude installation work, the accessories, tools and other items they use cannot usually be carried all at once, and they need to step down and climb up multiple times to get them, which slows down the progress of the work and makes the workers feel tired. Sometimes, someone else is needed to assist in delivering items, affecting work efficiency.

[0003] In view of the above phenomenon, the prior art proposes a ladder with a tray, in which a tray for placing items is directly added to the ladder. However, when installing the tray in the prior art, it is necessary to first pass the positioning shaft through the limit plate, and then install the limit structure on the positioning shaft. This assembly method is cumbersome and has low assembly efficiency. It is also easy to install the limit structure crooked, affecting its stability and resulting in poor installation quality.

[0004] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a subject to be studied and solved by the present invention. Summary of the invention

[0005] The object of the present invention is to provide a ladder with a carrying function.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a ladder with a loading function, comprising a hinged first ladder frame and a second ladder frame, both ladder frames comprising a plurality of profile rungs, the ladder having a use state and a folded state of a straight ladder, the use state comprising a straight ladder state and a herringbone ladder state, comprising a tool tray and a positioning structure; The tool tray is only used in the stepladder state and is detachably assembled with the ladder; when in use, the tool tray is positioned at the top of the ladder through the positioning structure; when stored, the tool tray is positioned at the side of any ladder frame through the positioning structure; The positioning structure includes a first positioning portion and a second positioning portion; The first positioning portion includes a first slot and a first elastic hook connected to the tool tray; the first slot is provided on two rungs at the top of the ladder, and the first slot corresponds to the first elastic hook, so that when the first elastic hook is inserted into the first slot, the tool tray is locked to the top of the ladder; The second positioning portion includes a second card slot and a second elastic hook connected to the tool tray; the second card slot is opened on two upper and lower adjacent rungs of any ladder rack, and is arranged corresponding to the second elastic hook, so that when the second elastic hook is inserted into the second card slot, the tool tray is locked on the first ladder rack or the second ladder rack.

[0007] In the above scheme, the tool tray is connected and locked to the top of the ladder in the stepladder state through the first positioning structure when in use, and is connected and locked to the side of the ladder through the second positioning structure when the tool tray is stored, which has a simple structure and is easy to operate. The first slot can be opened on the upper surface of the step rod, or on the front side or rear side of the step rod; the second slot can be opened on the front side or rear side of the step rod.

[0008] According to a further technical solution, the tool tray includes a downwardly recessed storage groove, and a hand-grip portion is formed outwardly and downwardly on the left and right sides of the upper edge of the storage groove, and the inner side surface of the hand-grip portion and the outer side wall of the storage groove together form a groove opening downward; in the use state, the groove is located between the two top step rods; in the storage state, the groove is located between the upper and lower step rods of any ladder frame; the first positioning portion and the second positioning portion share a positioning seat, a connecting block and a spring, and the positioning seat is relatively fixed in the groove; the connecting block is connected to the groove and is displaced left and right in the groove by external force; one end of the spring abuts against the positioning seat, and the other end abuts against the connecting block, so that the elastic hook maintains a movement tendency to engage in the slot.

[0009] A further technical solution is that the first elastic hook includes a first cantilever, the upper end of the first cantilever is fixedly connected to the connecting block, and the inner or outer side of the lower end is protruded to form a first hook head; the first elastic hook includes a second cantilever, the upper end of the second cantilever is fixedly connected to the connecting block, and the inner or outer side of the lower end is protruded to form a second hook head; wherein the first cantilever and the second cantilever have an avoidance distance in the inner and outer directions that does not interfere with the use of the two, and the hook heads at the lower ends of the two cantilevers are in the same direction.

[0010] According to a further technical solution, the first hook head and the second hook head are both arranged on the inner side of the lower end of the cantilever; the first positioning portion and the second positioning portion also share an unlocking button, one end of the unlocking button is connected to the inner cantilever of the two cantilevers, and the other end is exposed through a through hole on the side wall of the storage slot. The unlocking button is pressed outward to release the elastic hook from locking the slot.

[0011] In the above technical solution, the first positioning part and the second positioning part are combined on one structure, and the two combined states of the pallet and the ladder can be unlocked by operating the same unlocking button, which is simple to operate.

[0012] In a further technical solution, the first cantilever is located inside the second cantilever, and the length of the first cantilever is greater than that of the second cantilever. In order to increase the space of the tray storage slot and store more tools, the size of the groove between the storage slot and the buckle portion must be reduced, but it is also necessary to ensure that when the first cantilever and the second cantilever are respectively combined with the pedal, the other cantilever and the pedal do not interfere with each other in space. In this case, the first cantilever and the second cantilever are made to avoid the height difference in length, so that the first cantilever does not affect the combination of the second cantilever and the pedal, and similarly, the second cantilever does not affect the combination of the first cantilever and the pedal.

[0013] A further technical solution is that the positioning structure is provided with two groups, the two groups of positioning structures are symmetrically arranged on the left and right, and are respectively arranged in the grooves constructed by the buckle part and the storage slot; the tool tray is configured as follows: when in use, the left and right first hooks in the two groups of positioning structures are simultaneously inserted into the first slots provided on the top rungs of the first ladder frame and the second ladder frame to achieve the connection and locking of the tool tray with the ladder; when stored, the left and right second hooks in the two groups of positioning structures are simultaneously inserted into the second slots provided on the upper and lower adjacent rungs of the first ladder frame or the second ladder frame to achieve the connection and locking of the tool tray with the ladder. The setting of the two groups of positioning structures makes the combination of the tool tray and the ladder more secure.

[0014] According to a further technical solution, the ladder also includes a through hole for storing tools. Because the tool tray can only be used in the herringbone ladder state, the through hole can store a small amount of tools in both the herringbone ladder state and the straight ladder state.

[0015] According to a further technical solution, the insertion hole is located on an adjusting member for adjusting the state of the ladder; an outer side wall of the adjusting member is provided with a first straight reinforcement rib, and an inner wall of the first reinforcement rib and the outer side wall of the adjusting member together form the insertion hole.

[0016] According to a further technical solution, the insertion hole is arranged on the outer side wall of the foot plate of the ladder frame located at the top when the ladder is in the straight ladder state; the outer side wall of the foot plate is protrudingly provided with a straight second reinforcing rib, and the inner wall of the second reinforcing rib and the outer side wall of the foot plate together form the insertion hole.

[0017] The advantages of the present invention are as follows: 1. In this case, the tool tray and the ladder are quickly connected and locked by setting a positioning structure. With its simple structure and the same operating button, the tool tray can be connected and removed from the ladder when in use and when stored, providing users with convenient operation.

[0018] Second, when the tool tray is stored, it can be hidden and combined between the first ladder frame and the second ladder frame without taking up extra space. While increasing the storage space of the ladder, it does not increase the gap between the two ladder frames when the ladder is folded, which is convenient for storage and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 It is a schematic diagram of a part of the structure of the ladder in the herringbone state according to an embodiment of the present invention (the tool tray is combined with the top of the ladder); Attached Figure 2 For attachment Figure 1 A in the enlarged view; Attached Figure 3 The tool tray is combined with the side of the ladder frame according to the embodiment of the present invention. Figure 1 ; Attached Figure 4 The tool tray is combined with the side of the ladder frame according to the embodiment of the present invention. Figure 2 ; Attached Figure 5 A schematic diagram of the structure of a tool tray according to an embodiment of the present invention (including a positioning structure); Attached Figure 6 An exploded view of a tool tray according to an embodiment of the present invention (including a positioning structure); Attached Figure 7 A schematic diagram of the structure of a tool tray according to an embodiment of the present invention (excluding the positioning structure); Attached Figure 8 This is a schematic diagram of the cross-sectional structure of the positioning structure in the groove when the unlocking button is pressed according to an embodiment of the present invention; Attached Fig. 9 This is a schematic diagram of the cross-sectional structure of the positioning structure in the groove when the unlocking button is not pressed according to an embodiment of the present invention; Attached Fig.10 This is a schematic structural diagram of a foot dish according to an embodiment of the present invention; Attached Fig.11 It is a schematic diagram of the structure of the foot dish from a side view of an embodiment of the present invention; Attached Fig.12 It is a schematic structural diagram of the ladder in an open state according to an embodiment of the present invention when it is in a straight line state.

[0020] In the above drawings: 1. first ladder frame; 2. second ladder frame; 3. step; 4. first slot; 5. second slot; 6. storage slot; 7. buckle; 8. groove; 9. positioning seat; 10. connecting block; 11. spring; 12. first cantilever; 13. first hook; 14. second cantilever; 15. second hook; 16. through hole; 17. unlock button; 18. insertion hole; 19. adjustment member; 20. first reinforcing rib; 21. foot plate; 22. second reinforcing rib; 23. limit plate. Implementation

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0022] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0023] The terms “first”, “second”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0024] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0025] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0026] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0027] The terms "front", "back", "up", "down", "left", "right", etc. used in this article are all directional terms. In this case, they are only used to illustrate the positional relationship between the various structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0028] See attached Figure 1-12 As shown, a ladder with a loading function includes a hinged first ladder frame 1 and a second ladder frame 2, both ladder frames include a plurality of profile rungs 3, the ladder has a use state and a folded state of a straight ladder, the use state includes a straight ladder state and a herringbone ladder state, the ladder includes a tool tray for storing tools and an insertion hole 18. Among them, the tool tray is only used in the herringbone ladder state, and the insertion hole 18 can be used in both the herringbone ladder state and the straight ladder state.

[0029] The tool tray is detachably assembled with the ladder; when in use, the tool tray is positioned at the top of the ladder through a positioning structure; when stored, the tool tray is positioned at the side of any ladder frame through the positioning structure.

[0030] The positioning structure includes a first positioning portion and a second positioning portion; the first positioning portion includes a first card slot 4 and a first elastic hook connected to the tool tray; the first card slot 4 is opened on the upper surface or side of the two step rods 3 located at the top of the first ladder frame 1 and the second ladder frame 2, and the first card slot 4 corresponds to the first elastic hook, so that when the first elastic hook is inserted into the first card slot 4, the tool tray is locked at the top of the ladder in the herringbone ladder state.

[0031] The second positioning portion includes a second card slot 5 with an opening facing forward or backward and a second elastic hook connected to the tool tray; the second card slot 5 is opened on the front side or rear side of two upper and lower adjacent step rods 3 in the first ladder frame 1 or the second ladder frame 2, and corresponds to the second elastic hook, so that when the second elastic hook is inserted into the second card slot 5, the tool tray is locked on the front side or rear side of the first ladder frame 1 or the second ladder frame 2. When the tool tray in this case is stored, it is combined with the inner side of the ladder frame, and the width of the tool tray is smaller than the width of the two adjacent step rods 3 of the ladder frame. In this way, when the tool tray is stored, it is hidden between the two step rods 3 and does not take up extra space, which is convenient for storage and loading.

[0032] The tool tray includes a storage groove 6 which is concave downwardly, and a hand-grip portion 7 is formed outwardly and downwardly on the left and right sides of the upper edge of the storage groove 6. The inner side surface of the hand-grip portion 7 and the outer side wall of the storage groove 6 are jointly constructed into a groove 8 which opens downwardly; in the use state, the groove 8 is located between the two top step rods 3; in the storage state, the groove 8 is located between the upper and lower step rods 3 of any ladder frame; the first positioning portion and the second positioning portion share a positioning seat 9, a connecting block 10 and a spring 11, and the positioning seat 9 is relatively fixed in the groove 8; the connecting block 10 is connected to the groove 8 and is displaced left and right in the groove 8 by external force; one end of the spring 11 is in contact with the positioning seat 9, and the other end is in contact with the connecting block 10, so that the elastic hook maintains a movement tendency of being engaged in the slot. The spring 11 in this case is in contact with the outer side wall of the connecting block 10, so that the elastic hook maintains a movement tendency of being engaged in the slot inwardly. In order to combine the first positioning part with the second positioning part, facilitate operation and simplify the structure, the spring 11 is provided, so that the cantilever in the first positioning part and the second positioning part can move synchronously. If the first positioning part and the second positioning part are provided separately, the cantilever in the two elastic hooks can be made of a material with elastic deformation, or a combination of a hard material and a spring.

[0033] The first elastic hook in this case includes a first cantilever 12, which is made of a hard material. The upper end of the first cantilever 12 is fixedly connected to the connecting block 10, and the inner or outer side of the lower end is convexly provided to form a first hook head 13. The first elastic hook includes a second cantilever 14, which is made of a hard material. The upper end of the second cantilever 14 is fixedly connected to the connecting block 10, and the inner or outer side of the lower end is convexly provided to form a second hook head 15; wherein, the first cantilever 12 and the second cantilever 14 have an avoidance spacing in the inner and outer directions that does not interfere with the use of the two, and the hook heads at the lower ends of the two cantilevers are in the same direction. In order to increase the space of the storage slot 6 and avoid interference between the two cantilevers, the first cantilever 12 in this case is located on the inner side of the second cantilever 14, and the length of the first cantilever 12 is greater than the length of the second cantilever 14. The first hook head 13 and the second hook head 15 in this case are both arranged on the inner side of the lower end of the cantilever. The first positioning portion and the second positioning portion also have a common unlocking button 17, one end of the unlocking button 17 is connected to the inner cantilever of the two cantilevers, and the other end is exposed through a through hole 16 on the side wall of the storage slot 6. Pressing the unlocking button 17 outward can release the elastic hook from locking the slot.

[0034] The positioning structure is provided with two groups, and the two groups of positioning structures are symmetrically arranged on the left and right sides, and are respectively arranged in the left groove 8 and the right groove 8 of the buckle part 7 and the storage groove 6; the tool tray is configured as follows: when in use, the left and right first hooks 13 in the two groups of positioning structures are simultaneously inserted into the first slots 4 provided on the top rungs 3 of the first ladder frame 1 and the second ladder frame 2, so as to achieve the connection and locking of the tool tray with the ladder; when storing, the left and right second hooks 15 in the two groups of positioning structures are simultaneously inserted into the second slots 5 provided on the upper and lower adjacent rungs 3 in the first ladder frame 1 or the second ladder frame 2, so as to achieve the connection and locking of the tool tray with the ladder. When operating, when taking the tool tray with both hands, the unlocking button 17 can be pressed outward at the same time to unlock the tool tray, which is time-saving and convenient.

[0035] The insertion hole 18 is located on the adjustment member 19 for adjusting the ladder state; the outer wall of the adjustment member 19 is protruded with a first straight reinforcing rib 20 , and the inner wall of the first reinforcing rib 20 and the outer wall of the adjustment member 19 together form the insertion hole 18 .

[0036] The insertion hole 18 can also be arranged on the outer side wall of the foot plate 21 of the ladder frame located at the top when the ladder is in the straight ladder state; the outer side wall of the foot plate 21 is protrudingly provided with a straight second reinforcing rib 22, and the inner wall of the second reinforcing rib 22 and the outer side wall of the foot plate 21 together form the insertion hole 18.

[0037] The four corners of the outer surface of the bottom of the storage groove 6 are each provided with a limiting piece 23. When the first slot 4 is opened on the upper surface of the step rod 3 and the first slot 4 and the second slot 5 both extend along the length direction of the step rod 3, when the tool tray is combined with the ladder, each limiting piece 23 is inserted into the corresponding slot on the step rod 3. On the one hand, the ladder and the tool tray are repeatedly positioned and connected to increase the stability of the connection between the two. On the other hand, the tool tray and the ladder are pre-positioned and connected, so that the tool tray and the ladder can be quickly connected.

[0038] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A ladder with a loading function, comprising a hinged first ladder frame (1) and a second ladder frame (2), both ladder frames comprising a plurality of profile rungs (3), the ladder having a use state and a folded state, the use state comprising a folded state and a herringbone ladder state, characterized in that: Also included are a tool tray and positioning structure; The tool tray is only used in the stepladder state and is detachably assembled with the ladder; when in use, the tool tray is positioned at the top of the ladder through the positioning structure; when stored, the tool tray is positioned at the side of any ladder frame through the positioning structure; The positioning structure includes a first positioning portion and a second positioning portion; The first positioning portion comprises a first slot (4) and a first elastic hook connected to the tool tray; the first slot (4) is formed on two rungs (3) at the top of the ladder, and the first slot (4) is arranged corresponding to the first elastic hook, so that when the first elastic hook is inserted into the first slot (4), the tool tray is locked to the top of the ladder; The second positioning portion comprises a second slot (5) and a second elastic hook connected to the tool tray; the second slot (5) is provided on two upper and lower adjacent steps (3) of any ladder frame and is arranged corresponding to the second elastic hook, so that when the second elastic hook is engaged with the second slot (5), the tool tray is locked on the first ladder frame (1) or the second ladder frame (2).

2. The ladder with a carrying function according to claim 1, characterized in that: The tool tray comprises a storage groove (6) which is concave downwards, and a handle portion (7) is formed outwards and downwards on the left and right sides of the upper edge of the storage groove (6), and the inner side surface of the handle portion (7) and the outer side wall of the storage groove (6) together form a groove (8) opening downwards; in the use state, the groove (8) is located between the two top step rods (3); in the storage state, the groove (8) is located between the upper and lower step rods (3) of any ladder frame; The first positioning portion and the second positioning portion share a positioning seat (9), a connecting block (10) and a spring (11); the positioning seat (9) is relatively fixed in the groove (8); the connecting block (10) is connected to the groove (8) and is displaced left and right in the groove (8) by an external force; the outer end of the spring (11) is in contact with the positioning seat (9), and the inner end is in contact with the connecting block (10), so that the elastic hook maintains a movement tendency of being engaged in the groove.

3. The ladder with a carrying function according to claim 2, characterized in that: The first elastic hook comprises a first cantilever (12), the upper end of the first cantilever (12) is fixedly connected to the connecting block (10), and the inner side or outer side of the lower end is convexly provided to form a first hook head (13); The first elastic hook comprises a second cantilever (14), the upper end of the second cantilever (14) is fixedly connected to the connecting block (10), and the inner side or outer side of the lower end is protruded to form a second hook head (15); wherein the first cantilever (12) and the second cantilever (14) have an avoidance distance in the inner and outer directions that does not interfere with the use of the two, and the hook heads at the lower ends of the two cantilevers are in the same direction.

4. The ladder with a carrying function according to claim 3, characterized in that: The first hook head (13) and the second hook head (15) are both arranged on the inner side of the lower end of the cantilever; The first positioning portion and the second positioning portion are also provided with an unlocking button (17) fixedly connected to the connecting block (10); the unlocking button (17) is exposed through a through hole (16) on the side wall of the storage slot (6); the unlocking button (17) is pressed outward to release the locking of the slot by the elastic hook.

5. The ladder with a carrying function according to claim 4, characterized in that: The first cantilever (12) is located inside the second cantilever (14), and the length of the first cantilever (12) is greater than the length of the second cantilever (14).

6. The ladder with a carrying function according to claim 5, characterized in that: The positioning structure is provided with two groups, the two groups of positioning structures are symmetrically arranged on the left and right, and are respectively arranged in the grooves (8) of the left and right buckle handles (7) and the storage slot (6); The tool tray is configured such that: when in use, the left and right first hooks (13) in the two sets of positioning structures are simultaneously inserted into first slots (4) provided on top rungs (3) of the first ladder frame (1) and the second ladder frame (2), thereby realizing connection and locking of the tool tray with the ladder; when stored, the left and right second hooks (15) in the two sets of positioning structures are simultaneously inserted into second slots (5) provided on upper and lower adjacent rungs (3) of the first ladder frame (1) or the second ladder frame (2), thereby realizing connection and locking of the tool tray with the ladder.

7. The ladder with a carrying function according to claim 1, characterized in that: The ladder also includes an insertion hole (18) for storing tools.

8. The ladder with a carrying function according to claim 7, characterized in that: The insertion hole (18) is located on an adjustment member (19) for adjusting the state of the ladder; A first straight-line reinforcing rib (20) is protruding from the outer side wall of the adjusting member (19), and the inner wall of the first reinforcing rib (20) and the outer side wall of the adjusting member (19) together form the insertion hole (18).

9. The ladder with a carrying function according to claim 7, characterized in that: The insertion hole (18) is provided on the outer side wall of the foot plate (21) of the ladder frame located at the top when the ladder is in a straight ladder state; The outer side wall of the foot plate (21) is provided with a second straight-line reinforcing rib (22), and the inner wall of the second reinforcing rib (22) and the outer side wall of the foot plate (21) together form the insertion hole (18).

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