Tool car self-locking structure and tool car

Abstract

The utility model provides a tool car self-locking structure which comprises a first self-locking piece and a second self-locking piece, at least part of the first self-locking piece is located in a drawer installation cavity, used for installing a drawer, of a tool car frame to form a first self-locking part, the second self-locking piece comprises a control part, one end of the control part is bent and extends to form a second self-locking part, and the second self-locking part is located in the drawer installation cavity. When the control part moves to the drawer locking position, the second self-locking part is driven to be matched with the first self-locking part in a locking mode or unlocked from the first self-locking part. According to the tool car self-locking structure, a user can operate the control part more conveniently and smoothly, actual use is facilitated, and the operation hand feeling is better; the first self-locking part and the second self-locking part have a better hiding effect, the integrity and attractiveness of the appearance are guaranteed, the structural limitation of the first self-locking part and the second self-locking part can be reduced, and the structural design of the first self-locking part and the second self-locking part can have a more stable and better locking effect. The utility model further provides a tool car.

Description

Technical Field

[0001] The utility model relates to the field of tool carts, in particular to a tool cart self-locking structure and a tool cart. Background Art

[0002] A tool cart is a movable container device used to store tools, which can help workers save a lot of space. During the use of the tool cart, if there is a slope or the tool cart is placed at an angle, the drawer of the tool cart will slide out of the frame of the tool cart due to its own gravity, causing unnecessary losses and accidents. In order to avoid such accidents, the existing tool carts on the market lock the drawers through a central lock to overcome the defects of accidents caused by the tool cart on a slope or the tool cart being placed at an angle. When the parts in the tool cart are needed, the central lock is opened with a key, which obviously increases the user's workload and reduces the user's work efficiency and work continuity. In order to solve the above problems, improvements have been made to the tool cart on the market, and unlocking or locking is achieved by operating the drawer handle. Since the drawer handle usually matches the width of the drawer panel and has a longer length, it makes it unstable to unlock or lock, and the operating feel is poor. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art, the utility model provides a tool trolley self-locking structure, which is provided with a first self-locking part inside the drawer installation cavity and a control part on the drawer panel, and one end of the control part is bent and extended toward the inside of the drawer installation cavity to form a second self-locking part, so that the user can operate the control part more conveniently and smoothly, which is convenient for practical use and has a better operating feel; the first self-locking part and the second self-locking part have a better hiding effect, ensure the integrity and aesthetics of the appearance, and can reduce the structural limitations of the first self-locking part and the second self-locking part, so that the structural design of the first self-locking part and the second self-locking part can have a more stable and better locking effect. The utility model also provides a tool trolley.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A tool cart self-locking structure, which is used to control whether a drawer is allowed to be opened relative to a tool cart frame, comprises:

[0006] A first self-locking member, which is arranged on the tool cart frame, wherein at least a portion of the first self-locking member is located inside a drawer mounting cavity of the tool cart frame for mounting the drawer, and is located outside a first drawer side surface of the drawer when the drawer is closed relative to the tool cart frame, and a portion of the first self-locking member located inside the drawer mounting cavity forms a first self-locking portion;

[0007] and a second self-locking member, which is arranged on the drawer, the second self-locking member includes a control part, the control part can move between a drawer locking position and a drawer unlocking position relative to the drawer panel of the drawer; the control part extends toward the outer side of the first drawer side at one end of the first drawer side and bends and extends toward the rear of the drawer at the outer side of the first drawer side to form a second self-locking part, and the second self-locking part is configured to be able to lock and cooperate with the first self-locking part when the drawer is in a closed state to restrict the drawer from opening;

[0008] During the process of the control part moving to the drawer locking position, the second self-locking part is driven by the control part to move to the first self-locking working position where it can cooperate with the first self-locking part to lock and restrict the drawer from opening; during the process of the control part moving to the drawer unlocking position, the second self-locking part is driven by the control part to move to the second self-locking working position where it can unlock with the first self-locking part to allow the drawer to open.

[0009] With the above structure, when the drawer is in the closed state, the control part can be placed in the drawer locking position. At this time, the second self-locking part will move to the first self-locking working position under the drive of the control part, and the second self-locking part will lock and cooperate with the first self-locking part. Since the first self-locking part is arranged on the tool cart frame and the second self-locking part is arranged on the drawer, the drawer is locked relative to the tool cart frame to restrict the opening of the drawer, thereby avoiding the safety hazard caused by accidental opening of the drawer when the tool cart is on a slope or the tool cart is tilted; when the user wants to open the drawer, he only needs to operate the control part and move it to the drawer unlocking position. At this time, the second self-locking part will move to the second self-locking working position under the drive of the control part, and the second self-locking part will be unlocked from the first self-locking part, that is, the drawer is unlocked relative to the tool cart frame to allow the drawer to be opened;

[0010] In the above structure, the control part is located on the drawer panel, so that the user can operate the control part more conveniently and smoothly, which is convenient for practical use; the first self-locking part is located inside the drawer installation cavity, and the second self-locking part is bent toward the rear of the drawer, so that the first self-locking part and the second self-locking part have a better hiding effect, ensuring the integrity and aesthetics of the appearance, and can reduce the structural limitations of the first self-locking part and the second self-locking part, so that the structural design of the first self-locking part and the second self-locking part can have a more stable and better locking effect.

[0011] Furthermore, the second self-locking part is configured to be able to move along a direction inconsistent with the drawer sliding direction to approach the first self-locking part and lock with it, or move along a direction inconsistent with the drawer sliding direction to move away from the first self-locking part and unlock it, under the drive of the control part, that is, when the second locking part is located at the first self-locking working position, along the sliding direction of the drawer, the first locking part and the second locking part are arranged relatively to each other, which can be simply understood as: when the drawer slides in the closing direction, the first self-locking part and the second self-locking part will contact each other; when the second locking part is located at the second self-locking working position, along the sliding direction of the drawer, the first locking part and the second locking part are staggered, which can be simply understood as: when the drawer slides in the opening or closing direction, the first self-locking part and the second self-locking part will not contact each other.

[0012] By adopting the above structure, the structural design of the first self-locking part and the second self-locking part is more reasonable, and the two can be locked together better and more stably. Moreover, since the second self-locking part moves in a direction inconsistent with the sliding direction of the drawer to move away from the first self-locking part and unlock it, when the second locking part is unlocked from the first locking part, the first locking part and the second locking part will not hinder the opening of the drawer.

[0013] Furthermore, the control part can be rotatably arranged relative to the drawer panel; the rotation axis of the control part is not perpendicular to the sliding trajectory of the drawer relative to the tool cart frame. Preferably, the rotation axis of the control part is parallel to the sliding trajectory of the drawer relative to the tool cart frame.

[0014] By adopting the above structure, the structure of the control part is more reasonable. When the control part rotates, the movement of the second locking part has a certain displacement in the height direction and the width direction of the drawer, so that the control part drives the second self-locking part to move in a direction inconsistent with the sliding direction of the drawer to approach or move away from the first self-locking part; of course, the control part can also be set to slide relative to the drawer panel along the height direction or the width direction of the drawer, and the control part can also drive the second self-locking part to move in a direction inconsistent with the sliding direction of the drawer.

[0015] Furthermore, the control unit is arranged close to the side surface of the first drawer.

[0016] The above structure makes the control setting more reasonable and easier to operate.

[0017] Furthermore, one of the first self-locking part and the second self-locking part is configured as a limiting plate, and the other of the first self-locking part and the second self-locking part is configured as a locking hook. When the drawer is in a closed state, when the second self-locking part is located in the first self-locking working position, the locking hook engages with the limiting plate to limit the movement of the second self-locking part along the drawer opening direction. When the second self-locking part is located in the second self-locking working position, the locking hook disengages from the limiting plate to allow the second self-locking part to move along the drawer opening direction.

[0018] By adopting the above structure, the structural design of the first self-locking part and the second self-locking part is more reasonable; when the drawer is in a closed state and the control part is located at the drawer locking position, it will drive the second self-locking part to move to the first self-locking working position, at which time the first self-locking part and the second self-locking part are engaged to achieve the locking cooperation of the two, thereby restricting the opening of the drawer; when the user operates the control part to move it to the drawer unlocking position, it will drive the second self-locking part to move to the second self-locking working position, at which time the first self-locking part and the second self-locking part are disengaged to achieve the unlocking of the two, thereby allowing the drawer to open; in the above structure, the structures of the first locking part and the second locking part are simple, so that the two will not occupy too much space in the drawer installation cavity, and can ensure the stability and reliability of the locking cooperation between the two.

[0019] Further, the first self-locking part is configured as the limiting plate, the second self-locking part is configured as the lock hook, and the lock hook includes a lock hook body; when the drawer is in a closed state, the limiting plate is located above or below the lock hook body, and the lock hook body protrudes toward the limiting plate on one side of the rear of the drawer to form a lock hook part, and when the second self-locking part is located in the first self-locking working position, the lock hook part and the limiting plate are arranged opposite to each other, and when the second self-locking part is located in the first self-locking working position, the lock hook part and the limiting plate are staggered; preferably, the limiting plate is located above the lock hook body.

[0020] By adopting the above structure, the structural design of the first self-locking part and the second self-locking part is more reasonable. When the drawer is in a closed state, when the second self-locking part is located at the first self-locking working position, the lock hook part and the limiting plate are arranged opposite to each other, that is, along the sliding direction of the drawer, the limiting plate is located on the sliding trajectory of the lock hook part sliding with the drawer to limit the sliding of the lock hook part, thereby limiting the sliding opening of the drawer. When the second self-locking part is located at the second self-locking working position, the lock hook part and the limiting plate are staggered, that is, along the sliding direction of the drawer, the limiting plate is not located on the sliding trajectory of the lock hook part sliding with the drawer, so the limiting plate does not limit the lock hook part, thereby allowing the drawer to slide open.

[0021] Furthermore, the tool trolley self-locking structure includes a reset member, and the reset member acts on the control part so that the control part has a tendency to move toward the drawer locking position side when the control part is not located at the drawer locking position.

[0022] The adoption of the above structure makes the design of the self-locking structure of the tool cart more reasonable, and the setting of the reset member makes the control part eventually be in the drawer locking position when there is no other external force; that is, when the drawer is in a closed state, under the action of the reset member, the control part will automatically reset to the locked drawer position, thereby driving the second self-locking part to move to lock with the first self-locking part, making the product more convenient to use; and ensuring stable and reliable locking cooperation between the first self-locking part and the second self-locking part to avoid accidental unlocking of the two.

[0023] Furthermore, during the process of the drawer sliding from the open state to the closed state, the second self-locking part first contacts with the first self-locking part to form a first contact part, and the first self-locking part first contacts with the second self-locking part to form a second contact part; the first contact part and / or the second contact part are configured as a self-locking guide part; during the process of the drawer sliding from the open state to the closed state, the self-locking guide part is used to guide the second self-locking part to move toward the second self-locking working position side when the second self-locking part contacts the first self-locking part.

[0024] With the above structure, the setting of the self-locking guide part makes it more convenient and quick for the user to close the drawer; due to the setting of the reset member, the control part is finally located at the locked drawer position without the action of operating force, that is, the second self-locking part is finally located at the first self-locking working position, and in the process of the user closing the drawer, when the drawer is not completely closed, the second self-locking part will contact the first self-locking part and cause the drawer to be unable to be completely closed, and the first self-locking part and the second self-locking part cannot be locked and matched, and manual operation of the control part is required; but the setting of the self-locking guide part guides the second self-locking part to move to the second self-locking working position side when the second self-locking part contacts the first self-locking part, so that the drawer can continue to close until it is completely closed, and the control part is reset under the reset member and drives the second self-locking part to reset and lock and match with the first self-locking part, without the need for additional manual operation of the control part.

[0025] Furthermore, the self-locking guide portion is provided on the lock hook portion of the lock hook; along the protruding direction of the lock hook portion, the self-locking guide portion gradually inclines toward the drawer panel side.

[0026] The above structure makes the arrangement of the self-locking guide portion more reasonable, and the inclined self-locking guide portion can guide the locking hook to move to the second self-locking working position when the locking hook contacts the limiting piece.

[0027] Furthermore, the reset member is an elastic member.

[0028] By adopting the above structure, the function of the resetting member is realized by relying on the elastic deformation of the elastic member, and the design is reasonable and reliable.

[0029] Furthermore, the self-locking structure of the tool cart includes a self-locking mounting seat arranged on the drawer panel, the self-locking mounting seat is recessed on one side of the drawer panel to form a self-locking mounting groove, the control part is movably arranged in the self-locking mounting groove, and an operating opening connected to the self-locking mounting groove is arranged on the side of the self-locking mounting seat away from the side of the first drawer, and an end of the operating member away from the side of the first drawer extends outward through the operating opening to form an operating part.

[0030] With the above structure, the setting of the self-locking mounting seat provides a mounting base for the installation of the control unit, and the self-locking mounting seat can shield the second self-locking member to a certain extent, can not only protect the second self-locking member, but also be more beautiful; the setting of the operating unit is convenient for the user to operate the control unit, and the design is reasonable;

[0031] Specifically, the self-locking mounting seat includes a self-locking mounting seat body and a mounting seat cover plate. The self-locking mounting seat body is arranged on the drawer panel, and the self-locking mounting groove is arranged on the side facing the drawer panel. The self-locking mounting seat body is arranged on the side away from the drawer panel. The mounting seat cover plate is arranged. The above structure makes the structure of the self-locking mounting seat more reasonable and easy to install, and the mounting seat cover plate can play a beautifying role.

[0032] Furthermore, a rotating mounting shaft is provided on the bottom surface protrusion of the self-locking mounting groove opposite to the drawer panel, and a rotating mounting hole matching the rotating mounting shaft is provided on the control part, and the control part is rotatably installed in the self-locking mounting groove by relying on the cooperation between the rotating mounting hole and the rotating mounting shaft.

[0033] With the above structure, the cooperation between the rotating installation shaft and the rotating installation hole realizes the rotating installation of the control part, and the installation is convenient and quick.

[0034] Furthermore, the control part includes a rotatable mounting sleeve and a control rod arranged on the rotatable mounting sleeve, the second self-locking part and the operating part are arranged at two ends of the control rod, and the rotatable mounting sleeve is provided with the rotatable mounting hole.

[0035] The above structure makes the structural setting of the control unit more reasonable.

[0036] Furthermore, the side of the rotating mounting sleeve facing the drawer panel protrudes from the side of the control rod facing the drawer panel, and the side of the rotating mounting sleeve facing the bottom surface of the self-locking mounting groove protrudes from the side of the control rod facing the bottom surface of the self-locking mounting groove.

[0037] By adopting the above structure, the contact area between the two sides of the control part and the drawer panel and the bottom surface of the self-locking mounting groove can be reduced, that is, when the control part is rotated, the friction between the control part and the drawer panel and the bottom surface of the self-locking mounting groove can be reduced, which can not only reduce the impact of friction on the operation of the structure, but also alleviate wear and increase the practical life.

[0038] Furthermore, the control rod is provided with a first stabilizing protrusion protruding toward the drawer panel on the side facing the drawer panel, and the protrusion height of the first stabilizing protrusion matches the height of the side of the rotating mounting sleeve protruding toward the drawer panel from the side of the control rod toward the drawer panel; the control rod is provided with a second stabilizing protrusion protruding toward the bottom surface of the self-locking mounting groove on the side facing the bottom surface of the self-locking mounting groove, and the protrusion height of the second stabilizing protrusion matches the height of the side of the rotating mounting sleeve protruding toward the bottom surface of the self-locking mounting groove from the side of the control rod toward the bottom surface of the self-locking mounting groove.

[0039] With the above structure, the first stabilizing protrusion and the second stabilizing protrusion are arranged so that the two sides of the control rod can contact the drawer panel and the bottom surface of the self-locking mounting groove while minimizing the contact with the drawer panel and the bottom surface of the self-locking mounting groove, thereby avoiding the shaking of the control rod during the movement, thereby ensuring the stability of the movement of the control rod; specifically, two first stabilizing protrusions are arranged, respectively located close to the operating part side and close to the second self-locking part side; two second stabilizing protrusions are arranged, respectively located close to the operating part side and close to the second self-locking part side.

[0040] Furthermore, the self-locking structure of the tool trolley includes a reset member, which is a torsion spring; the rotating mounting hole radially expands outward toward one side of the bottom surface of the self-locking mounting groove to form a reset accommodating groove, and the side wall of the rotating mounting hole toward one side of the bottom surface of the self-locking mounting groove is provided with a reset matching opening, the torsion spring is sleeved on the rotating mounting shaft and is located in the reset accommodating groove, one end of the torsion spring abuts against the side wall of the reset accommodating groove, and the other side abuts against the abutting protrusion arranged on the self-locking mounting groove through the reset matching opening.

[0041] The above structure makes the setting of the reset member more reasonable and reliable. The torsion spring is sleeved on the rotating mounting shaft and located in the reset accommodating groove, which can impose certain restrictions on the torsion spring, ensure the reliability and stability of its deformation, and effectively increase the service life of the torsion spring.

[0042] Furthermore, the tool cart self-locking structure includes a handle arranged on the drawer panel, and the handle is formed with an operation receiving groove at least at the operation part formed at one end of the control part, and an operation opening for a human hand to be inserted is provided on one side of the operation receiving groove.

[0043] With the above structure, the setting of the handle can hide the operating part formed at one end of the control part to a certain extent, making the overall appearance more beautiful and preventing the control part from being operated incorrectly; specifically, the handle extends along the width direction of the drawer panel and matches the width of the drawer panel, and the operation receiving groove is formed between the handle and the drawer panel, and the operation port is arranged on the downward side of the receiving groove. The above structure allows the user to open and close the drawer by means of the handle.

[0044] Further, the first self-locking member includes a first self-locking base, and the first self-locking base extends toward the inner side of the drawer installation cavity to form the first self-locking portion.

[0045] The above structure makes the structure of the first self-locking member more reasonable, and the provision of the first self-locking base facilitates the installation and fixation of the first self-locking member; specifically, the first self-locking base is installed on the tool trolley frame.

[0046] Furthermore, a plurality of drawers are provided, and correspondingly, the number of the first self-locking members and the second self-locking members matches the number of the drawers, and the first self-locking bases in the plurality of the first self-locking members are formed as one body.

[0047] The above structure is adopted to facilitate actual production and installation; that is, the plurality of first self-locking bases are formed as an integral part, and the first self-locking parts are respectively formed at corresponding positions of the drawer.

[0048] A tool cart comprises a tool cart frame, a drawer, and the above-mentioned tool cart self-locking structure. The tool cart frame is provided with a drawer installation cavity matching the drawer for installing the drawer, and the drawer is slidably arranged in the drawer installation cavity to be opened or closed.

[0049] The above structure makes the drawer of the tool cart safer to use and can effectively prevent it from being accidentally opened; and the control part is located on the drawer panel, so that the user can operate the control part more conveniently and smoothly, which is convenient for actual use; the first locking part and the second locking part can have a better locking cooperation effect and a good operating feel.

[0050] Compared with the prior art, the utility model has the following beneficial effects:

[0051] (1) The tool trolley self-locking structure and tool trolley of the utility model are provided with a first self-locking part inside the drawer installation cavity and a control part on the drawer panel, and one end of the control part is bent and extended toward the inner side of the drawer installation cavity to form a second self-locking part, so that the user can operate the control part more conveniently and smoothly, which is convenient for actual use and has a better operating feel; the first self-locking part and the second self-locking part have a better hiding effect, ensure the integrity and aesthetics of the appearance, and can reduce the structural limitations of the first self-locking part and the second self-locking part, so that the structural design of the first self-locking part and the second self-locking part can have a more stable and better locking effect.

[0052] (2) The self-locking structure of the tool cart and the tool cart of the utility model have reasonable structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 It is a three-dimensional structural schematic diagram of the utility model tool vehicle;

[0055] Figure 2 It is a schematic diagram of the internal structure of the tool cart of the utility model at the self-locking structure of the tool cart;

[0056] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0057] Figure 4 It is a schematic cross-sectional view of the tool cart of the utility model at the self-locking structure of the tool cart;

[0058] Figure 5 It is a schematic diagram of the locked state and unlocked state of the self-locking structure of the tool cart of the utility model (the upper one is the locked state, and the lower one is the unlocked state);

[0059] Figure 6It is a schematic diagram of the installation of the second self-locking member in the self-locking structure of the tool vehicle of the utility model;

[0060] Figure 7 It is a schematic diagram of the matching structure of the second self-locking member and the reset member in the self-locking structure of the tool vehicle of the utility model;

[0061] The names of the components corresponding to the reference numerals in the figure are: 1. first self-locking member; 101. first self-locking portion; 1011. first contact portion; 102. first self-locking base; 2. second self-locking member; 201. control portion; 2011. rotation mounting hole; 2012. rotation mounting sleeve; 2013. control rod; 2014. first stabilizing protrusion; 2015. second stabilizing protrusion; 2016. reset accommodating groove; 2017. reset matching opening; 202 , second self-locking portion; 2021, second contact portion; 203, operating portion; 3, limiting piece; 4, locking hook; 401, locking hook body; 402, locking hook portion; 5, reset member; 6, self-locking guide portion; 7, self-locking mounting seat; 701, self-locking mounting groove; 702, operating opening; 703, rotating mounting shaft; 704, abutting protrusion; 705, self-locking mounting seat body; 706, mounting seat cover; 8, handle; 9, operating accommodating groove; 10, operating port;

[0062] 100, tool cart frame; 100-a, drawer mounting cavity; 200, drawer; 200-a, first drawer side; 200-b, drawer panel. DETAILED DESCRIPTION

[0063] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0065] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0066] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0067] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0068] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0070] See also Figures 1 to 7 The utility model provides a tool cart self-locking structure, which is used to control whether a drawer 200 is allowed to be opened relative to a tool cart frame 100, including:

[0071] A first self-locking member 1 is provided on the tool cart frame 100, wherein the first self-locking member 1 is at least partially located inside a drawer installation cavity 100-a of the tool cart frame 100 for installing the drawer 200, and is located outside a first drawer side surface 200-a of the drawer 200 when the drawer 200 is closed relative to the tool cart frame 100, and the portion of the first self-locking member 1 located inside the drawer installation cavity 100-a forms a first self-locking portion 101;

[0072] and a second self-locking member 2, which is arranged on the drawer 200, the second self-locking member 2 includes a control part 201, the control part 201 can move between a drawer 200 locking position and a drawer 200 unlocking position relative to a drawer panel 200-b of the drawer 200; the control part 201 extends toward the outer side of the first drawer side 200-a of the drawer 200 from one end thereof and bends and extends toward the rear of the drawer 200 from the outer side of the first drawer side 200-a to form a second self-locking part 202, and the second self-locking part 202 is configured to be able to lock and cooperate with the first self-locking part 101 when the drawer 200 is in a closed state to restrict the drawer 200 from opening;

[0073] During the process of the control part 201 moving to the locking position of the drawer 200, the second self-locking part 202, driven by the control part 201, moves to the first self-locking working position capable of cooperating with the first self-locking part 101 to lock so as to restrict the opening of the drawer 200; during the process of the control part 201 moving to the unlocking position of the drawer 200, the second self-locking part 202, driven by the control part 201, moves to the second self-locking working position capable of unlocking from the first self-locking part 101 to allow the drawer 200 to open.

[0074] With the above structure, when the drawer 200 is in the closed state, the control unit 201 can be placed in the drawer 200 locking position. At this time, the second self-locking unit 202 will move to the first self-locking working position under the drive of the control unit 201, and the second self-locking unit 202 will lock and cooperate with the first self-locking unit 101. Since the first self-locking member 1 is arranged on the tool cart frame 100 and the second self-locking member 2 is arranged on the drawer 200, the drawer 200 is locked relative to the tool cart frame 100 to limit the drawer 200. When the tool cart is on a slope or the tool cart is placed at an angle, the drawer 200 is opened to avoid accidental opening of the drawer 200 and thus causing a safety hazard; when the user wants to open the drawer 200, he only needs to operate the control unit 201 and move the drawer 200 to the unlocking position, at which time the second self-locking unit 202 will move to the second self-locking working position under the drive of the control unit 201, and the second self-locking unit 202 will be unlocked from the first self-locking unit 101, that is, the drawer 200 is unlocked relative to the tool cart frame 100 to allow the drawer 200 to be opened;

[0075] In the above structure, the control part 201 is located on the drawer panel 200-b, so that the user can operate the control part 201 more conveniently and smoothly, which is convenient for practical use; the first self-locking part 101 is located inside the drawer installation cavity 100-a, and the second self-locking part 202 is bent toward the rear of the drawer 200, so that the first self-locking part 101 and the second self-locking part 202 have a better hiding effect, ensuring the integrity and aesthetics of the appearance, and can reduce the structural limitations of the first self-locking part 101 and the second self-locking part 202, so that the structural design of the first self-locking part 101 and the second self-locking part 202 can have a more stable and better locking effect.

[0076] See also Figure 2 , Figure 3 and Figure 5 Furthermore, the second self-locking part 202 is configured to be able to move along a direction inconsistent with the sliding direction of the drawer 200 under the drive of the control part 201 to approach the first self-locking part 101 and lock with it, or move along a direction inconsistent with the sliding direction of the drawer 200 to move away from the first self-locking part 101 and unlock it, that is, when the second locking part is located at the first self-locking working position, along the sliding direction of the drawer 200, the first locking part and the second locking part are arranged relative to each other, which can be simply understood as: when the drawer 200 slides in the closing direction, the first self-locking part 101 and the second self-locking part 202 will contact; when the second locking part is located at the second self-locking working position, along the sliding direction of the drawer 200, the first locking part and the second locking part are staggered, which can be simply understood as: when the drawer 200 slides in the opening and closing directions, the first self-locking part 101 and the second self-locking part 202 will not contact.

[0077] By adopting the above structure, the structural design of the first self-locking part 101 and the second self-locking part 202 is more reasonable, and the two can be better and more stably locked together. Moreover, since the second self-locking part 202 moves in a direction inconsistent with the sliding direction of the drawer 200 to move away from the first self-locking part 101 and unlock it, when the second locking part is unlocked from the first locking part, the first locking part and the second locking part will not hinder the opening of the drawer 200.

[0078] See also Figure 5 Furthermore, the control unit 201 can be rotatably arranged relative to the drawer panel 200-b; the rotation axis of the control unit 201 is not perpendicular to the sliding trajectory of the drawer 200 relative to the tool cart frame 100. Preferably, the rotation axis of the control unit 201 is parallel to the sliding trajectory of the drawer 200 relative to the tool cart frame 100.

[0079] By adopting the above structure, the structure of the control part 201 is more reasonable. When the control part 201 rotates, the movement of the second locking part has a certain displacement in the height direction of the drawer 200 and the width direction of the drawer 200, so that the control part 201 drives the second self-locking part 202 to move along a direction inconsistent with the sliding direction of the drawer 200 to approach or move away from the first self-locking part 101; of course, the control part 201 can also be set to slide relative to the drawer panel 200-b along the height direction of the drawer 200 or the width direction of the drawer 200, and the control part 201 can also drive the second self-locking part 202 to move along a direction inconsistent with the sliding direction of the drawer 200.

[0080] See also Figure 2 , Figure 3 and Figure 5 Furthermore, the control unit 201 is arranged close to the first drawer side 200-a.

[0081] The above structure makes the control setting more reasonable and easier to operate.

[0082] See also Figure 2 , Figure 3 and Figure 5 Further, one of the first self-locking part 101 and the second self-locking part 202 is configured as a limiting plate 3, and the other of the first self-locking part 101 and the second self-locking part 202 is configured as a lock hook 4. When the drawer 200 is in a closed state and the second self-locking part 202 is located at the first self-locking working position, the lock hook 4 engages with the limiting plate 3 to limit the movement of the second self-locking part 202 along the opening direction of the drawer 200. When the second self-locking part 202 is located at the second self-locking working position, the lock hook 4 disengages from the limiting plate 3 to allow the second self-locking part 202 to move along the opening direction of the drawer 200.

[0083] By adopting the above structure, the structural design of the first self-locking part 101 and the second self-locking part 202 is more reasonable; when the drawer 200 is in a closed state and the control part 201 is located at the position of locking the drawer 200, it will drive the second self-locking part 202 to move to the first self-locking working position. At this time, the first self-locking part 101 and the second self-locking part 202 are engaged to achieve the locking cooperation of the two, thereby limiting the opening of the drawer 200; when the user operates the control part 201 to make it move to the position of unlocking the drawer 200, it will drive the second self-locking part 202 to move to the second self-locking working position. At this time, the first self-locking part 101 and the second self-locking part 202 are disengaged to achieve the unlocking of the two, thereby allowing the drawer 200 to open; in the above structure, the structures of the first locking part and the second locking part are simple, so that the two will not occupy too much space in the drawer installation cavity 100-a, and can ensure the stability and reliability of the locking cooperation between the two.

[0084] See also Figure 2 , Figure 3 and Figure 5 Further, the first self-locking portion 101 is configured as the limiting piece 3, the second self-locking portion 202 is configured as the locking hook 4, and the locking hook 4 includes a locking hook body 401; when the drawer 200 is in a closed state, the limiting piece 3 is located above or below the locking hook body 401, and the locking hook body 401 protrudes toward the limiting piece 3 on one side of the rear of the drawer 200 to form a locking hook portion 402, and when the second self-locking portion 202 is located in the first self-locking working position, the locking hook portion 402 is arranged opposite to the limiting piece 3, and when the second self-locking portion 202 is located in the first self-locking working position, the locking hook portion 402 is staggered with the limiting piece 3; preferably, the limiting piece 3 is located above the locking hook body 401.

[0085] By adopting the above structure, the structural design of the first self-locking part 101 and the second self-locking part 202 is more reasonable. When the drawer 200 is in a closed state, when the second self-locking part 202 is located in the first self-locking working position, the lock hook part 402 is arranged opposite to the limiting plate 3, that is, along the sliding direction of the drawer 200, the limiting plate is located on the sliding track of the lock hook part 402 sliding with the drawer 200 to limit the sliding of the lock hook part 402, thereby limiting the sliding opening of the drawer 200. When the second self-locking part 202 is located in the second self-locking working position, the lock hook part 402 is staggered with the limiting plate 3, that is, along the sliding direction of the drawer 200, the limiting plate is not located on the sliding track of the lock hook part 402 sliding with the drawer 200, so the limiting plate does not limit the lock hook part 402, thereby allowing the drawer 200 to slide open.

[0086] See also Figure 6 , Figure 7 Furthermore, the tool cart self-locking structure includes a reset member 5, and the reset member 5 acts on the control unit 201 so that the control unit 201 has a tendency to move toward the locking position side of the drawer 200 when it is not located at the locking position of the drawer 200.

[0087] The above structure makes the design of the self-locking structure of the tool cart more reasonable. The setting of the reset member 5 makes the control part 201 eventually be in the locked position of the drawer 200 when there is no other external force. That is, when the drawer 200 is in a closed state, under the action of the reset member 5, the control part will automatically reset to the locked drawer 200 position, thereby driving the second self-locking part 202 to move to lock with the first self-locking part 101, making the product more convenient to use; and ensuring the stable and reliable locking cooperation between the first self-locking part 101 and the second self-locking part 202 to avoid accidental unlocking of the two.

[0088] See also Figure 2 , Figure 3 and Figure 5 Furthermore, during the process of the drawer 200 sliding from the open state to the closed state, the second self-locking part 202 first contacts with the first self-locking part 101 to form a first contact part 1011, and the first self-locking part 101 first contacts with the second self-locking part 202 to form a second contact part 2021; the first contact part 1011 and / or the second contact part 2021 are configured as a self-locking guide part 6; during the process of the drawer 200 sliding from the open state to the closed state, the self-locking guide part 6 is used to guide the second self-locking part 202 to move toward the second self-locking working position side when the second self-locking part 202 contacts with the first self-locking part 101.

[0089] With the above structure, the setting of the self-locking guide part 6 makes it more convenient and quick for the user to close the drawer 200; due to the setting of the reset member 5, the control part 201 is finally located in the lock drawer 200 position without the action of operating force, that is, the second self-locking part 202 is finally located in the first self-locking working position. When the user closes the drawer 200, when the drawer 200 is not completely closed, the second self-locking part 202 will contact the first self-locking part 101 and cause the drawer 200 to be unable to be completely closed, and The first self-locking part 101 and the second self-locking part 202 cannot be locked together, and manual operation of the control part 201 is required; however, the setting of the self-locking guide part 6 allows the second self-locking part 202 to move toward the second self-locking working position when the second self-locking part 202 contacts the first self-locking part 101, so that the drawer 200 can continue to close until it is completely closed. The control part is reset under the reset part 5 and drives the second self-locking part 202 to reset and lock with the first self-locking part 101, without the need for additional manual operation of the control part 201.

[0090] See also Figure 3 , Figure 6 , Figure 7 Furthermore, the self-locking guide portion 6 is provided on the lock hook portion 402 of the lock hook 4; along the protruding direction of the lock hook portion 402, the self-locking guide portion 6 gradually inclines toward the drawer panel 200-b side.

[0091] The above structure makes the arrangement of the self-locking guide portion 6 more reasonable. The inclined self-locking guide portion 6 can guide the lock hook 4 to move to the second self-locking working position when the lock hook 4 contacts the limiting plate 3 .

[0092] See also Figure 6 , Figure 7 Furthermore, the reset member 5 is an elastic member.

[0093] By adopting the above structure, the function of the resetting member 5 is realized by relying on the elastic deformation of the elastic member, and the design is reasonable and reliable.

[0094] See also Figure 3 , Figure 6Furthermore, the self-locking structure of the tool cart includes a self-locking mounting seat 7 arranged on the drawer panel 200-b, and the self-locking mounting seat 7 is recessed toward one side of the drawer panel 200-b to form a self-locking mounting groove 701. The control unit 201 is movably arranged in the self-locking mounting groove 701, and the side of the self-locking mounting seat 7 away from the first drawer side 200-a is provided with an operating opening 702 connected to the self-locking mounting groove 701, and the end of the operating member away from the first drawer side 200-a extends outward through the operating opening 702 to form an operating unit 203.

[0095] With the above structure, the setting of the self-locking mounting seat 7 provides a mounting base for the installation of the control unit 201, and the self-locking mounting seat 7 can shield the second self-locking member 2 to a certain extent, and can not only protect the second self-locking member 2, but also be more beautiful; the setting of the operating unit 203 is convenient for the user to operate the control unit 201, and the design is reasonable;

[0096] Specifically, the self-locking mounting seat 7 includes a self-locking mounting seat body 705 and a mounting seat cover 706. The self-locking mounting seat body 705 is arranged on the drawer panel 200-b, and the self-locking mounting groove 701 is arranged on the side facing the drawer panel 200-b. The self-locking mounting seat body 705 is arranged on the side away from the drawer panel 200-b. The mounting seat cover 706 is arranged on the side of the self-locking mounting seat body 705 away from the drawer panel 200-b. The above structure makes the structure of the self-locking mounting seat 7 more reasonable and easy to install, and the mounting seat cover 706 can play a beautifying role.

[0097] See also Figure 6 Furthermore, a rotating mounting shaft 703 is provided on the bottom surface protrusion of the self-locking mounting groove 701 opposite to the drawer panel 200-b, and a rotating mounting hole 2011 matching the rotating mounting shaft 703 is provided on the control unit 201. The control unit 201 is rotatably installed in the self-locking mounting groove 701 by relying on the cooperation between the rotating mounting hole 2011 and the rotating mounting shaft 703.

[0098] With the above structure, the cooperation between the rotating installation shaft 703 and the rotating installation hole 2011 realizes the rotating installation of the control unit 201, and the installation is convenient and quick.

[0099] See also Figure 6 Further, the control part 201 includes a rotating mounting sleeve 2012 and a control rod 2013 arranged on the rotating mounting sleeve 2012, the second self-locking part 202 and the operating part 203 are arranged at both ends of the control rod 2013, and the rotating mounting sleeve 2012 is provided with the rotating mounting hole 2011.

[0100] The above structure makes the structural setting of the control unit 201 more reasonable.

[0101] See also Figure 6 Furthermore, the side of the rotating mounting sleeve 2012 facing the drawer panel 200-b protrudes from the side of the control rod 2013 facing the drawer panel 200-b, and the side of the rotating mounting sleeve 2012 facing the bottom surface of the self-locking mounting groove 701 protrudes from the side of the control rod 2013 facing the bottom surface of the self-locking mounting groove 701.

[0102] By adopting the above structure, the contact area between the two sides of the control part 201 and the drawer panel 200-b and the bottom surface of the self-locking mounting groove 701 can be reduced, that is, when the control part 201 is rotated, the friction between the control part 201 and the drawer panel 200-b and the bottom surface of the self-locking mounting groove 701 can be reduced, which can not only reduce the impact of friction on the operation of the structure, but also alleviate wear and increase the practical life.

[0103] See also Figure 6 Further, the control rod 2013 is provided with a first stabilizing protrusion 2014 protruding toward the drawer panel 200-b on one side, and the protrusion height of the first stabilizing protrusion 2014 matches the height of the side of the rotating mounting sleeve 2012 protruding from the side of the control rod 2013 toward the drawer panel 200-b; the control rod 2013 is provided with a second stabilizing protrusion 2015 protruding toward the side of the bottom surface of the self-locking mounting groove 701 on one side, and the protrusion height of the second stabilizing protrusion 2015 matches the height of the side of the rotating mounting sleeve 2012 protruding from the side of the control rod 2013 toward the bottom surface of the self-locking mounting groove 701.

[0104] By adopting the above structure, the setting of the first stabilizing protrusion 2014 and the second stabilizing protrusion 2015 enables the two sides of the control rod 2013 to contact the drawer panel 200-b and the bottom surface of the self-locking mounting groove 701 while minimizing the contact with the drawer panel 200-b and the bottom surface of the self-locking mounting groove 701, thereby avoiding the shaking of the control rod 2013 during the movement, thereby ensuring the stability of the movement of the control rod 2013; specifically, there are two first stabilizing protrusions 2014, which are respectively located near the operating part 203 side and near the second self-locking part 202 side; there are two second stabilizing protrusions 2015, which are respectively located near the operating part 203 side and near the second self-locking part 202 side.

[0105] See also Figure 7Furthermore, the self-locking structure of the tool cart includes a reset member 5, and the reset member 5 is a torsion spring; the rotating mounting hole 2011 radially expands outward toward one side of the bottom surface of the self-locking mounting groove 701 to form a reset accommodating groove 2016, and the rotating mounting hole 2011 is provided with a reset matching opening 2017 on one side of the side wall of the bottom surface of the self-locking mounting groove 701, and the torsion spring is sleeved on the rotating mounting shaft 703 and located in the reset accommodating groove 2016, one end of the torsion spring abuts against the side wall of the reset accommodating groove 2016, and the other side abuts against the abutting protrusion 704 arranged on the self-locking mounting groove 701 through the reset matching opening 2017.

[0106] The above structure makes the setting of the reset member 5 more reasonable and reliable. The torsion spring is sleeved on the rotating mounting shaft 703 and is located in the reset accommodating groove 2016, which can impose certain restrictions on the torsion spring, ensure the reliability and stability of its deformation, and effectively increase the service life of the torsion spring.

[0107] See also Figure 1 Furthermore, the self-locking structure of the tool cart includes a handle 8 arranged on the drawer panel 200-b, and the handle 8 is formed with an operation accommodating groove 9 at least at the operation part 203 formed at one end of the control part 201, and an operation opening 10 for a human hand to be inserted is provided on one side of the operation accommodating groove 9.

[0108] By adopting the above structure, the setting of the handle 8 can hide the operating part 203 formed at one end of the control part 201 to a certain extent, making the overall appearance more beautiful and preventing the control part from being operated incorrectly; specifically, the handle 8 extends along the width direction of the drawer panel 200-b and matches the width of the drawer panel 200-b, and the operation receiving groove 9 is formed between the handle 8 and the drawer panel 200-b, and the operation port 10 is arranged on the downward side of the receiving groove. The above structure allows the user to open and close the drawer 200 through the handle 8.

[0109] See also Figure 3 , Figure 4 and Figure 5 Furthermore, the first self-locking component 1 includes a first self-locking base 102, and the first self-locking base 102 extends toward the inner side of the drawer installation cavity 100-a to form the first self-locking portion 101.

[0110] The above structure makes the structure of the first self-locking member 1 more reasonable, and the setting of the first self-locking base 102 facilitates the installation and fixation of the first self-locking member 1; specifically, the first self-locking base 102 is installed on the tool cart frame 100.

[0111] See also Figure 3 , Figure 4 and Figure 5 Further, the drawer 200 is provided with multiple, and correspondingly, the number of the first self-locking members 1 and the second self-locking members 2 is matched with the number of the drawers 200, and the first self-locking bases 102 in the multiple first self-locking members 1 are formed as one.

[0112] The above structure is adopted to facilitate actual production and installation; that is, the plurality of first self-locking bases 102 are formed as an integral part, and the first self-locking parts 101 are respectively formed at corresponding positions of the drawer 200 .

[0113] See also Figures 1 to 7 A tool cart comprises a tool cart frame 100, a drawer 200, and the above-mentioned tool cart self-locking structure. The tool cart frame 100 is provided with a drawer installation cavity 100-a that matches the drawer 200 for installing the drawer 200, and the drawer 200 is slidably arranged in the drawer installation cavity 100-a to be opened or closed.

[0114] The above structure makes the drawer 200 of the tool cart safer to use and can effectively prevent it from being accidentally opened; and the control part 201 is located on the drawer panel 200-b, so that the user can operate the control part 201 more conveniently and smoothly, which is convenient for actual use; the first locking part and the second locking part can have a better locking cooperation effect and a good operating feel.

[0115] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0116] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A tool cart self-locking structure, used to control whether a drawer (200) is allowed to open relative to a tool cart frame (100), characterized in that: include: A first self-locking member (1) is arranged on a tool cart frame (100), wherein the first self-locking member (1) is at least partially located inside a drawer installation cavity (100-a) of the tool cart frame (100) for installing a drawer (200), and is located outside a first drawer side surface (200-a) of the drawer (200) when the drawer (200) is closed relative to the tool cart frame (100), and the portion of the first self-locking member (1) located inside the drawer installation cavity (100-a) forms a first self-locking portion (101); and a second self-locking member (2), which is arranged on the drawer (200), the second self-locking member (2) comprising a control part (201), the control part (201) being movable between a drawer (200) locking position and a drawer (200) unlocking position relative to a drawer panel (200-b) of the drawer (200); the control part (201) extending toward the outer side of the first drawer side (200-a) of the drawer (200) at one end thereof and bending and extending toward the rear of the drawer (200) at the outer side of the first drawer side (200-a) to form a second self-locking member (202), and the second self-locking member (202) being configured to lock and cooperate with the first self-locking member (101) when the drawer (200) is in a closed state so as to restrict the drawer (200) from opening; During the process of the control part (201) moving to the drawer (200) locking position, the second self-locking part (202) is driven by the control part (201) to move to a first self-locking working position capable of cooperating with the first self-locking part (101) to lock so as to restrict the drawer (200) from opening; during the process of the control part (201) moving to the drawer (200) unlocking position, the second self-locking part (202) is driven by the control part (201) to move to a second self-locking working position capable of unlocking the first self-locking part (101) to allow the drawer (200) to open.

2. The self-locking structure of the tool cart according to claim 1, characterized in that: The second self-locking portion (202) is configured to be able to move along a direction inconsistent with the sliding direction of the drawer (200) under the drive of the control portion (201) to approach the first self-locking portion (101) and lock with it, or to move along a direction inconsistent with the sliding direction of the drawer (200) to move away from the first self-locking portion (101) and unlock it.

3. The self-locking structure of the tool cart according to claim 2, characterized in that: The control part (201) is rotatable relative to the drawer panel (200-b); and the control part (201) is arranged close to the side surface (200-a) of the first drawer; The rotation axis of the control part (201) is parallel to the sliding track of the drawer (200) sliding relative to the tool cart frame (100).

4. The self-locking structure of the tool cart according to claim 1, characterized in that: One of the first self-locking part (101) and the second self-locking part (202) is configured as a limiting plate (3), and the other of the first self-locking part (101) and the second self-locking part (202) is configured as a locking hook (4); when the drawer (200) is in a closed state and the second self-locking part (202) is located at the first self-locking working position, the locking hook (4) engages with the limiting plate (3) to limit the movement of the second self-locking part (202) along the opening direction of the drawer (200); when the second self-locking part (202) is located at the second self-locking working position, the locking hook (4) disengages from the limiting plate (3) to allow the second self-locking part (202) to move along the opening direction of the drawer (200).

5. The self-locking structure of the tool cart according to claim 4, characterized in that: The first self-locking portion (101) is configured as the limiting piece (3), and the second self-locking portion (202) is configured as the locking hook (4), and the locking hook (4) comprises a locking hook body (401); when the drawer (200) is in a closed state, the limiting piece (3) is located above or below the locking hook body (401), and the locking hook body (401) protrudes toward the limiting piece (3) on one side of the rear of the drawer (200) to form a locking hook portion (402); when the second self-locking portion (202) is located in the first self-locking working position, the locking hook portion (402) and the limiting piece (3) are arranged opposite to each other; when the second self-locking portion (202) is located in the first self-locking working position, the locking hook portion (402) and the limiting piece (3) are arranged in a staggered manner.

6. The self-locking structure of the tool vehicle according to claim 5, characterized in that: It comprises a reset member (5), wherein the reset member (5) acts on the control part (201) so that the control part (201) has a tendency to move toward the lock position side of the drawer (200) when the control part (201) is not located at the lock position of the drawer (200); During the process of the drawer (200) sliding from the open state to the closed state, the second self-locking part (202) first contacts with the first self-locking part (101) to form a first contact part (1011), and the first self-locking part (101) first contacts with the second self-locking part (202) to form a second contact part (2021); the first contact part (1011) and / or the second contact part (2021) are configured as a self-locking guide part (6); during the process of the drawer (200) sliding from the open state to the closed state, the self-locking guide part (6) is used to guide the second self-locking part (202) to move toward the second self-locking working position when the second self-locking part (202) contacts with the first self-locking part (101).

7. The self-locking structure of the tool vehicle according to claim 6, characterized in that: The self-locking guide portion (6) is provided on the lock hook portion (402) of the lock hook (4); along the protruding direction of the lock hook portion (402), the self-locking guide portion (6) gradually inclines toward the drawer panel (200-b); The reset member (5) is an elastic member.

8. The self-locking structure of the tool cart according to claim 3, characterized in that: The invention comprises a self-locking mounting seat (7) arranged on a drawer panel (200-b), wherein the self-locking mounting seat (7) is recessed on one side of the drawer panel (200-b) to form a self-locking mounting groove (701), wherein the control unit (201) is movably arranged in the self-locking mounting groove (701), and an operating opening (702) communicating with the self-locking mounting groove (701) is arranged on the side of the self-locking mounting seat (7) away from the first drawer side (200-a), and an end of the operating member away from the first drawer side (200-a) extends outward through the operating opening (702) to form an operating unit (203); The bottom surface protrusion of the self-locking installation groove (701) opposite to the drawer panel (200-b) is provided with a rotating installation shaft (703), and the control unit (201) is provided with a rotating installation hole (2011) matching the rotating installation shaft (703), and the control unit (201) is rotatably installed in the self-locking installation groove (701) by virtue of the cooperation between the rotating installation hole (2011) and the rotating installation shaft (703); The control part (201) comprises a rotatable installation sleeve (2012) and a control rod (2013) arranged on the rotatable installation sleeve (2012); the second self-locking part (202) and the operating part (203) are arranged at two ends of the control rod (2013); and the rotatable installation sleeve (2012) is provided with the rotatable installation hole (2011); The side of the rotating installation sleeve (2012) facing the drawer panel (200-b) protrudes from the side of the control rod (2013) facing the drawer panel (200-b), and the side of the rotating installation sleeve (2012) facing the bottom surface of the self-locking installation groove (701) protrudes from the side of the control rod (2013) facing the bottom surface of the self-locking installation groove (701); The control rod (2013) is provided with a first stabilizing protrusion (2014) protruding toward the drawer panel (200-b) on one side thereof, and the protrusion height of the first stabilizing protrusion (2014) matches the height of the side of the rotating mounting sleeve (2012) protruding from the side of the control rod (2013) facing the drawer panel (200-b); the control rod (2013) is provided with a second stabilizing protrusion (2015) protruding toward the side of the bottom surface of the self-locking mounting groove (701) on one side thereof, and the protrusion height of the second stabilizing protrusion (2015) matches the height of the side of the rotating mounting sleeve (2012) protruding from the side of the control rod (2013) facing the bottom surface of the self-locking mounting groove (701) on one side thereof.

9. The self-locking structure of the tool vehicle according to claim 8, characterized in that: The invention comprises a reset member (5), wherein the reset member (5) is a torsion spring; the rotational mounting hole (2011) radially expands outwardly toward one side of the bottom surface of the self-locking mounting groove (701) to form a reset accommodating groove (2016), and a reset matching opening (2017) is provided on a side wall of the rotational mounting hole (2011) toward the bottom surface of the self-locking mounting groove (701); the torsion spring is sleeved on the rotational mounting shaft (703) and is located in the reset accommodating groove (2016); one end of the torsion spring abuts against the side wall of the reset accommodating groove (2016), and the other end abuts against a supporting protrusion (704) provided on the self-locking mounting groove (701) through the reset matching opening (2017); The tool cart self-locking structure comprises a handle (8) arranged on a drawer panel (200-b), wherein the handle (8) is provided with an operation receiving groove (9) at least at an operation portion (203) formed at one end of the control portion (201), and an operation opening (10) for a human hand to insert is provided on one side of the operation receiving groove (9); The first self-locking member (1) comprises a first self-locking base (102), and the first self-locking base (102) extends toward the inner side of the drawer installation cavity (100-a) to form the first self-locking portion (101); A plurality of drawers (200) are provided, and correspondingly, the number of the first self-locking members (1) and the second self-locking members (2) provided matches the number of drawers (200), and the first self-locking bases (102) in the plurality of the first self-locking members (1) are formed as one body.

10. A tool vehicle, characterized in that: include: A tool cart frame (100), a drawer (200), and a self-locking structure of a tool cart as described in any one of claims 1 to 9, wherein the tool cart frame (100) is provided with a drawer installation cavity (100-a) that matches the drawer (200) for installing the drawer (200), and the drawer (200) is slidably arranged in the drawer installation cavity (100-a) to be opened or closed.

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