Pull rod mechanism and energy storage device

Abstract

The utility model relates to the technical field of power supplies, in particular to a pull rod mechanism and an energy storage device.The pull rod mechanism is applied to a movable device, the movable device comprises a first state and a second state, and when the movable device is in the first state, an included angle is formed between the movable device and the supporting ground bearing the movable device; when the movable device is in the second state, the movable device is horizontally placed on the supporting ground; the pull rod mechanism comprises a fixing frame, a pull rod assembly and a buffering assembly. The fixing frame is connected with a shell of the movable device. The pull rod assembly is arranged on the fixing frame and used for pulling the movable device in the first state. The buffer assembly is arranged on the fixing frame, can stretch out and draw back in the height direction of the buffer assembly and is used for providing elastic supporting force in the height direction of the buffer assembly. When the movable device is in the second state, the buffer assembly abuts against the supporting ground. The pull rod mechanism can effectively relieve impact force between movable devices such as an energy storage device and the like and the ground when the movable devices are put down, and therefore safety is improved.

Description

Technical Field

[0001] The present application relates to the field of power supply technology, and in particular to a pull rod mechanism and an energy storage device. Background Art

[0002] As an energy storage device, outdoor power supplies are often used in outings, camping and other occasions. They have a large capacity and can provide power supply functions in the wild. The weight of an outdoor power supply increases with the increase of capacity, and it is usually laborious to move it by carrying it. In order to facilitate the movement of the outdoor power supply, rollers and pull rods are often installed on the outdoor power supply. When it needs to be moved, just lift the pull rod to pull the outdoor power supply to move, and then lay down the outdoor power supply after reaching the destination. Since the outdoor power supply itself is heavy and the internal power supply is fully charged, a large impact force occurs between it and the ground when it is laid down, which poses certain safety hazards. Utility Model Content

[0003] The purpose of the present application is to provide a pull rod mechanism and an energy storage device, wherein the pull rod mechanism can effectively alleviate the impact force between the energy storage device and the ground when the energy storage device is laid down, thereby improving safety.

[0004] To this end, on the first aspect, an embodiment of the present application provides a pull rod mechanism, which is applied to a movable device, and the movable device includes a first state and a second state. When the movable device is in the first state, the movable device is set at an angle with the supporting ground bearing it; when the movable device is in the second state, the movable device is placed flat on the supporting ground; the pull rod mechanism includes: a fixed frame, connected to the shell of the movable device; a pull rod assembly, arranged on the fixed frame, for pulling the movable device in the first state; and a buffer assembly, arranged on the fixed frame, which can be extended and retracted along its own height direction, and is used to provide elastic supporting force along the height direction of the buffer assembly; wherein, when the movable device is in the second state, the buffer assembly abuts against the supporting ground.

[0005] In one possible implementation, a mounting groove is provided on the fixing frame, and the buffer assembly includes: a support block, which is slidably provided in the mounting groove along an extension direction of the mounting groove, and the support block has a support portion located outside the mounting groove; an elastic member, which is provided in the mounting groove, and the two ends of the elastic member are respectively connected to the groove bottom of the mounting groove and the support block; and a limit member, which is connected to one end of the support block away from the support portion, and is used to prevent the support block from detaching from the mounting groove.

[0006] In a possible implementation, a side of the fixing frame facing the shell is provided with an avoidance groove, the avoidance groove is connected with the installation groove through a connecting hole provided on the fixing frame, and a part of the support block can extend into the avoidance groove through the connecting hole.

[0007] In a possible implementation, the limiting member includes a limiting plate, and the limiting plate is connected to the support block through a fastener. The fastener is located in the avoidance groove, and the bottom wall of the avoidance groove is used to limit the limiting plate.

[0008] In a possible implementation, the outer peripheral side of the support portion is in clearance fit with the inner surface of the installation groove. When the limiting plate abuts against the inner wall of the avoidance groove, at least a part of the support portion is located in the installation groove.

[0009] In a possible implementation, the buffer assembly further includes a wear-resistant pad, and the wear-resistant pad is arranged on the surface of the support portion facing away from the installation groove.

[0010] In a possible implementation, the pull rod assembly includes: a telescopic sleeve having a fixed end connected to the fixed frame and a movable end away from the fixed end, and the telescopic sleeve can be telescoped along its own extending direction; and a handle arranged at the movable end of the telescopic sleeve.

[0011] In a possible implementation, the telescopic sleeve includes: a first sleeve connected to the fixed frame; a second sleeve slidably arranged in the first sleeve, and a first locking member is arranged on the second sleeve for positioning the second sleeve; and a third sleeve slidably arranged in the second sleeve, and a second locking member is arranged on the third sleeve for positioning the third sleeve; the pull rod assembly further includes an unlocking member arranged on the handle for unlocking the first locking member and the second locking member.

[0012] In a possible implementation, a plurality of locking holes are arranged at intervals along the extending direction of the second sleeve, and the locking rod of the second locking member can extend into the locking holes for positioning the third sleeve.

[0013] In a second aspect, an embodiment of the present application provides an energy storage device, including: a housing; a roller rotatably arranged at one end of the housing; and the above-mentioned pull rod mechanism arranged on the housing.

[0014] According to the pull rod mechanism and the energy storage device provided by the embodiments of the present application, when the pull rod mechanism needs to move a movable device, the energy storage device and other movable devices are erected to the first state through the pull rod assembly, and then the movable device is pulled by the pull rod assembly to move. After moving to the destination, the movable device can be laid down to the second state. At this time, the buffer assembly on the fixed frame contacts the supporting ground to play a buffering role, which can effectively relieve the impact force between the energy storage device and other movable devices and the ground when being laid down, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0018] Figure 1 Shows a schematic three-dimensional structure diagram of an energy storage device provided by an embodiment of the present application;

[0019] Figure 2 Shows a schematic structure diagram of an energy storage device provided by an embodiment of the present application in a second state;

[0020] Figure 3 Shows Figure 1 A schematic structure diagram of the shown energy storage device when the pull rod assembly is in an extended state;

[0021] Figure 4 Shows a schematic structure diagram of a fixing bracket and a buffer assembly provided by an embodiment of the present application;

[0022] Figure 5 Shows Figure 4 A schematic cross-sectional structure diagram along the A-A direction;

[0023] Figure 6 Shows a schematic three-dimensional structure diagram of a pull rod mechanism provided by an embodiment of the present application;

[0024] Figure 7 Shows a schematic cross-sectional structure diagram of a pull rod mechanism provided by an embodiment of the present application;

[0025] Figure 8 Shows Figure 7 A partial enlarged structure diagram at position B.

[0026] Explanation of reference numerals in the drawings:

[0027] 1. Fixing bracket; 11. Installation groove; 12. Avoidance groove;

[0028] 2. Housing;

[0029] 3. Tie rod assembly; 31. Telescopic sleeve; 311. First sleeve; 312. Second sleeve; 3121. Locking hole; 313. First locking member; 314. Third sleeve; 315. Second locking member; 32. Handle; 33. Unlocking member; 331. Button; 332. Connecting plate; 333. Push rod; 334. Return spring; 335. Guide post;

[0030] 4. Buffer assembly; 41. Support block; 411. Support portion; 412. Connection portion; 42. Elastic member; 43. Limiting member; 431. Limiting plate; 432. Fastening member; 44. Wear-resistant pad;

[0031] 5. Roller. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0033] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present application. To simplify the disclosure of the embodiments of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present application. In addition, the embodiments of the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] For ease of description, spatial relative relationship terms may be used in the text to describe the relative position or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", "front", "rear", etc. Such spatial relative relationship terms are intended to include different orientations of the device during use or operation other than the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip, attitude change, or change in motion state, then these directional indications will also change accordingly. For example, an element described as "below other elements or features" or "beneath other elements or features" will subsequently be oriented as "above other elements or features" or "over other elements or features". Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions), and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0035] To solve the problems in the prior art, the present application provides a pull rod mechanism and an energy storage device. The pull rod mechanism can effectively alleviate the impact force between a movable device such as an energy storage device and the ground when it is laid down, thereby improving safety.

[0036] As Figures 1-8 shown, an embodiment of the present application provides a pull rod mechanism applied to a movable device. The movable device includes a first state and a second state. When the movable device is in the first state, the movable device is disposed at an angle with respect to the supporting ground that bears it; when the movable device is in the second state, the movable device lies flat on the supporting ground. The pull rod mechanism includes: a fixed frame 1, a pull rod assembly 3, and a buffer assembly. This angle can be an acute angle, a right angle, or an obtuse angle. For example, it can be angles such as 30 degrees, 60 degrees, 90 degrees, 120 degrees, etc.

[0037] The fixed frame 1 is connected to the housing 2 of the movable device.

[0038] The pull rod assembly 3 is disposed on the fixed frame 1 and is used to pull the movable device in the first state.

[0039] The buffer assembly 4 is disposed on the fixed frame 1 and can be telescoped along its own height direction, and is used to provide an elastic supporting force along the height direction of the buffer assembly.

[0040] Wherein, when the movable device is in the second state, the buffer assembly 4 abuts against the supporting ground. Specifically, the supporting ground here is the ground, and it can also be a floor, etc. The movable device moves on the supporting ground or is placed on the supporting ground for use.

[0041] When the movable device is in the first state, it is arranged at an angle with the supporting ground for moving the movable device; when the movable device is in the second state, it is placed flat on the supporting ground for the use or storage of the movable device.

[0042] Specifically, the movable device in this application is an energy storage device, that is, an outdoor mobile power supply. Of course, the movable device can also be other devices that need to protect the items inside the housing and need to move the items.

[0043] In this application, when the movable device needs to be moved, the movable device is erected to the first state through the pull rod assembly 3, and then the movable device is pulled to move through the pull rod assembly 3. After moving to the destination, the movable device can be laid down to the second state. At this time, the buffer assembly 4 on the fixing frame 1 contacts the supporting ground and is compressed to play a buffering role, which can effectively relieve the impact force between the movable device such as the energy storage device and the ground when it is laid down, thereby improving safety.

[0044] In the related art, the existing energy storage devices are generally provided with a pull rod and rollers 5. When moving, the energy storage device is erected through the pull rod, and then the energy storage device is pulled to move; after moving to the destination, the energy storage device needs to be laid down to ensure the stability of the energy storage device. However, when laying down the energy storage device, due to the large weight of the energy storage device itself, if the pull rod is not retracted, it is easy to cause local stress on the pull rod to be too large and deformed and damaged; if the pull rod is retracted, due to the shortening of the force arm, the acting force on the hand will become larger. When actually laying down the energy storage device, people often let go before they can fully bend down, resulting in an impact between the end of the energy storage device away from the roller 5 and the ground. The impact force is likely to cause damage to the power supply and components inside the energy storage device, and there are certain safety hazards.

[0045] In this application, by providing the buffer assembly 4 on the fixing frame 1, when the energy storage device is laid down from the first state to the second state, even if the weight of the energy storage device is very heavy and people let go halfway because they can't hold it, the buffer assembly 4 will absorb the impact force, thereby reducing the impact force between the energy storage device and the ground, and further protecting the energy storage device and improving safety.

[0046] Moreover, the buffer device is arranged on the fixing frame 1 and will not directly transmit the acting force to the housing 2, further improving safety.

[0047] In some embodiments, when the movable device is in the first state, the buffer assembly 4 is arranged away from the supporting ground. Specifically, one end of the housing is provided with rollers 5, and the energy storage device in the first state is moved through the cooperation of the rollers 5 and the pull rod assembly 3.

[0048] In this application, when the energy storage device is in the second state, one end plays a supporting role through the roller 5, and the other end plays a supporting role through the buffer assembly 4 on the fixing frame 1. By increasing the distance between the buffer assembly 4 and the roller 5, the stability of the support for the energy storage device is further improved. Specifically, at least two buffer assemblies 4 are provided. In a preferred embodiment, two buffer assemblies 4 are provided. Of course, after the weight of the energy storage device is further increased, the number of buffer assemblies 4 can be correspondingly increased, for example, 3 or 4, etc.

[0049] As Figures 4-5 shown, in some embodiments, an installation groove 11 is provided on the fixing frame 1. The buffer assembly 4 includes: a support block 41, which is slidably arranged in the installation groove 11 along the extension direction of the installation groove 11. The support block 41 has a support portion 411 located outside the installation groove 11; an elastic member 42, which is arranged in the installation groove 11. Two ends of the elastic member 42 are respectively connected to the bottom of the installation groove 11 and the support block 41; and a limiting member 43, which is connected to one end of the support block 41 away from the support portion 411 and is used to prevent the support block 41 from detaching from the installation groove 11.

[0050] In this application, the support block 41 plays a supporting role through the support portion 411. When the energy storage device is laid down, the support block 41 compresses the elastic member 42, thereby absorbing the impact force and achieving the purpose of buffering. Usually, the limiting member 43 limits the support block 41 to prevent the support block 41 from detaching from the installation groove 11. Specifically, by arranging the support block 41 and the elastic member 42 in the installation groove 11, the exposed protruding parts of the buffer assembly 4 can be reduced, and at the same time, it can also play a buffering role when laid down.

[0051] In some embodiments, an avoidance groove 12 is provided on one side of the fixing frame 1 facing the housing. The avoidance groove 12 is communicated with the installation groove 11 through a communication hole provided on the fixing frame 1. A part of the support block 41 can extend into the avoidance groove 12 through the communication hole.

[0052] In this application, by providing the avoidance groove 12 on the fixing frame 1, when the support block 41 contacts the supporting ground and plays a supporting role, it can partially enter the avoidance groove 12, thereby ensuring that the buffer assembly 4 can achieve a buffering effect and at the same time minimizing the overall thickness of the fixing frame 1 as much as possible.

[0053] In some embodiments, the limiting member 43 includes a limiting plate 431. The limiting plate 431 is connected to the support block 41 through a fastener 432. The fastener 432 is located in the avoidance groove 12, and the bottom wall of the avoidance groove 12 is used to limit the limiting plate 431. Specifically, the fastener 432 is a screw to ensure the reliability of the connection between the limiting plate 431 and the support block 41. The fastener 432 can also be glue or the like to connect the support block 41 and the limiting plate 431.

[0054] In this application, when the energy storage device is in the second state, the installation groove 11 is located directly above the avoidance groove 12. The installation groove 11 and the avoidance groove 12 are connected through a communication hole. The limiting plate 431 is installed in the avoidance groove 12 and connected to the support block 41 by screws, which facilitates the disassembly and assembly of the limiting member 43 so as to replace the damaged buffer assembly 4.

[0055] Specifically, the support block 41 includes a connecting portion 412 connected to the support portion 411. The connecting portion 412 is in clearance fit with the communication hole. When the compression elastic member 42 is compressed, the connecting portion 412 extends into the avoidance groove 12 through the communication hole, thereby playing a role in buffering and shock absorption. By the clearance fit between the connecting portion 412 and the communication hole, the support block 41 is further limited, ensuring that the support block 41 can only move along the extending direction of the installation groove 11. After the support block 41 is worn or damaged, the screw is unscrewed on the opening side of the avoidance groove 12, so that the limiting plate 431 can be separated from the support block 41. Then, the support block 41 is taken out of the installation groove 11, and a new support block 41 is reinstalled into the installation groove 11 and reconnected to the limiting plate 431 by screws.

[0056] In some embodiments, the outer peripheral side of the support portion 411 is in clearance fit with the inner surface of the installation groove 11. When the limiting plate 431 abuts against the inner wall of the avoidance groove 12, at least part of the support portion 411 is located in the installation groove 11.

[0057] In this application, the clearance fit between the outer peripheral side of the support portion 411 and the installation groove 11 can position the support block 41. When the limiting plate 431 abuts against the inner wall of the avoidance groove 12, at this time at least part of the support portion 411 is located in the installation groove 11, so that the support portion 411 can fully cover the installation groove 11, thereby preventing external dust and impurities from entering the installation groove 11 and protecting the elastic member 42, and preventing small particles from getting stuck and affecting the use effect of the buffer assembly 4.

[0058] In some embodiments, the buffer assembly 4 further includes a wear-resistant pad 44, and the wear-resistant pad 44 is disposed on the surface of the support portion 411 facing away from the installation groove 11.

[0059] Specifically, a groove is provided on the surface of the support portion 411 of the support block 41, and the wear-resistant pad 44 is disposed in the groove. Usually, the wear-resistant pad 44 is in contact with the ground, and relative sliding or impact occurs. The wear-resistant pad 44 has stronger wear resistance, thereby ensuring the service life of the buffer assembly 4.

[0060] As Figures 6-8 shown, in some embodiments, the pull rod assembly 3 includes: a telescopic sleeve 31 having a fixed end connected to the fixed frame 1 and a movable end away from the fixed end, and the telescopic sleeve 31 can be telescoped along its own extending direction; and a handle 32 disposed at the movable end of the telescopic sleeve 31.

[0061] In this application, the handle 32 is arranged at the movable end of the telescopic sleeve 31. When it is necessary to move the energy storage device, the telescopic sleeve 31 is pulled out through the handle 32 to adjust the length of the telescopic rod, which facilitates people to pull the energy storage device to move in an upright position; in the second state, the telescopic rod can be retracted to reduce the occupied space.

[0062] In some embodiments, the telescopic sleeve 31 includes: a first sleeve 311 connected to the fixed frame 1; a second sleeve 312 slidably arranged in the first sleeve 311, and a first locking member 313 is arranged on the second sleeve 312, and the first locking member 313 is used to position the second sleeve 312; and a third sleeve 314 slidably arranged in the second sleeve 312, and a second locking member 315 is arranged on the third sleeve 314, and the second locking member 315 is used to position the third sleeve 314; the tie rod assembly 3 further includes an unlocking member 33 arranged on the handle 32, and the unlocking member 33 is used to unlock the first locking member 313 and the second locking member 315.

[0063] In this application, the first sleeve 311 is connected to the fixed frame by bolts, the second sleeve 312 is slidably matched with the first sleeve 311, and the second sleeve 312 can be positioned by the first locking member 313. The third sleeve 314 is slidably matched with the second sleeve 312, and the third sleeve 314 can be positioned by the second locking member 315, so as to ensure that the telescopic sleeve 31 can maintain a specific length, which is convenient for pulling the energy storage device. When it is necessary to retract the telescopic sleeve 31, the unlocking member 33 on the handle 32 can be used to release the limiting functions of the first locking member 313 and the second locking member 315, so as to reset the second sleeve 312 and the third sleeve 314 of the telescopic sleeve 31.

[0064] Specifically, the first sleeve 311, the second sleeve 312 and the third sleeve 314 are all double rods. Compared with the single-rod telescopic sleeve 31, the stability of the energy storage device can be better controlled, and the situation of tipping over when the energy storage device moves, stands up or lies down can be avoided, so as to protect the energy storage device and improve safety.

[0065] In a specific embodiment, a cavity is provided inside the handle 32. The cavity communicates with the third sleeve 314. The unlocking member 33 includes a button 331 provided on the handle 32, a connecting plate 332 connected to the button 331, and a push rod 333 connected to the connecting plate 332. One end of the push rod 333 away from the connecting plate 332 is located inside the telescopic sleeve 31. The unlocking of the second locking member 315 is completed by the cooperation of the push rod 333 and the second locking member 315. The second locking member 315 can cooperate with the first locking member 313 to complete the unlocking of the first locking member 313. Specifically, a return spring 334 and a guide post 335 are further provided in the cavity. The return spring 334 abuts against the button 331 and is used for the reset of the button 331. The guide post 335 cooperates with the connecting plate 332 to position the connecting plate 332, so that the connecting plate 332 and the button 331 can only slide along the extending direction of the guide post 335.

[0066] In some embodiments, a plurality of locking holes 3121 are provided at intervals along the extending direction of the second sleeve 312. The locking rod of the second locking member 315 can extend into the locking holes 3121 to position the third sleeve 314.

[0067] In this application, by providing a plurality of locking holes 3121 on the second sleeve 312, the plurality of locking holes 3121 can be arranged at equal intervals or at unequal intervals. When the locking rod of the second locking member 315 extends into one of the locking holes 3121, the limitation between the second sleeve 312 and the third sleeve 314 is completed. By engaging the locking rod of the second locking member 315 into different locking holes 3121, the overall length of the telescopic sleeve 31 can be adjusted, and multi-gear selection can be performed, so as to be suitable for users of different heights.

[0068] When the pull rod mechanism needs to move the energy storage device, the energy storage device is erected to the first state through the pull rod assembly 3, and then the energy storage device is pulled by the pull rod assembly 3 to move. After moving to the destination, the energy storage device needs to be laid down to the second state. At this time, the buffer assembly 4 on the fixed frame 1 contacts the ground to play a buffering role, which can effectively relieve the impact force between the energy storage device and the ground when it is laid down, thereby improving safety.

[0069] As Figures 1-3 shown, an embodiment of the present application provides an energy storage device, including: a housing 2; a roller 5 rotatably provided at one end of the housing 2; and the above-mentioned pull rod mechanism provided on the housing 2.

[0070] In this application, by adopting the above-mentioned pull rod mechanism, when the energy storage device is laid down, the buffer assembly 4 of the pull rod mechanism can play a buffering role, and the force between the energy storage device and the ground is concentrated on the fixed frame 1 of the pull rod mechanism, so that the impact force will not directly act on the housing 2 of the energy storage device, thereby playing a good protective role for the structure inside the housing 2.

[0071] In this application, the energy storage device further includes a power supply disposed inside the housing 2. By adopting the above-mentioned pull rod mechanism, when the energy storage device is laid down from the first state to the second state, the impact force between the energy storage device and the ground can be effectively buffered, thereby protecting the power supply inside the energy storage device and avoiding the power supply being damaged by impact or leaking and exploding, improving safety.

[0072] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless an execution order is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0073] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms do not imply an order or sequence when used herein. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0074] The above are only specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A pull rod mechanism is applied to a movable device, and the movable device includes a first state and a second state. When the movable device is in the first state, the movable device is arranged at an angle with the supporting ground that bears it; when the movable device is in the second state, the movable device lies flat on the supporting ground; and it is characterized in that, The pull rod mechanism comprises: A fixed frame (1) connected to a housing (2) of the movable device; a pull rod assembly (3), arranged on the fixing frame (1), and used for pulling the movable device in the first state; and A buffer component (4) is arranged on the fixing frame (1) and can be extended and retracted along its own height direction, and is used to provide elastic supporting force along the height direction of the buffer component; Wherein, when the movable device is in the second state, the buffer component (4) abuts against the supporting ground.

2. The drawbar mechanism according to claim 1, wherein, The fixing frame (1) is provided with a mounting groove (11), and the buffer assembly (4) comprises: A support block (41) is slidably disposed in the installation groove (11) along an extension direction of the installation groove (11), and the support block (41) has a support portion (411) located outside the installation groove (11); an elastic member (42) disposed in the mounting groove (11), wherein two ends of the elastic member (42) are respectively connected to the bottom of the mounting groove (11) and the support block (41); and A limiting member (43) is connected to an end of the supporting block (41) away from the supporting portion (411), and is used to prevent the supporting block (41) from being separated from the mounting groove (11).

3. The drawbar mechanism according to claim 2, characterized in that, The fixing frame (1) is provided with an avoidance groove (12) on one side facing the shell, the avoidance groove (12) is connected to the installation groove (11) via a connecting hole provided on the fixing frame (1), and a part of the support block (41) can extend into the avoidance groove (12) through the connecting hole.

4. The drawbar mechanism according to claim 3, characterized in that, The limiting member (43) comprises a limiting plate (431), the limiting plate (431) being connected to the supporting block (41) via a fastener (432), the fastener (432) being located in the avoidance groove (12), and the bottom wall of the avoidance groove (12) being used to limit the limiting plate (431).

5. The drawbar mechanism according to claim 4, characterized in that, The outer peripheral side of the support portion (411) is clearance-matched with the inner surface of the installation groove (11); when the limit plate (431) abuts against the inner wall of the avoidance groove (12), the support portion (411) is at least partially located in the installation groove (11).

6. The drawbar mechanism according to claim 2, wherein, The buffer assembly (4) further comprises a wear-resistant pad (44), wherein the wear-resistant pad (44) is arranged on a surface of the support portion (411) facing away from the mounting groove (11).

7. The drawbar mechanism according to claim 1, characterized in that, The pull rod assembly (3) comprises: A telescopic sleeve (31) having a fixed end connected to the fixing frame (1) and a movable end away from the fixed end, wherein the telescopic sleeve (31) can be telescoped along its own extension direction; and A handle (32) is arranged at the movable end of the telescopic sleeve (31).

8. The drawbar mechanism according to claim 7, characterized in that, The telescopic sleeve (31) comprises: A first sleeve (311) connected to the fixing frame (1); a second sleeve (312) slidably disposed in the first sleeve (311), the second sleeve (312) being provided with a first locking member (313), the first locking member (313) being used to position the second sleeve (312); and, A third sleeve (314) is slidably disposed within the second sleeve (312). A second locking member (315) is provided on the third sleeve (314), and the second locking member (315) is used to position the third sleeve (314). The pull rod assembly (3) further includes an unlocking member (33) provided on the handle (32), and the unlocking member (33) is used to unlock the first locking member (313) and the second locking member (315).

9. The drawbar mechanism according to claim 8, characterized in that, A plurality of locking holes (3121) are spaced along the extending direction of the second sleeve (312). The locking rod of the second locking member (315) can extend into the locking holes (3121) to position the third sleeve (314).

10. A energy storage device, characterized in that, Comprising: A housing (2); A roller (5) rotatably disposed at one end of the housing (2); and, The pull rod mechanism according to any one of claims 1-9, provided on the housing (2).

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