Locking mechanism and cart

Abstract

This utility model relates to the field of locking, specifically to a locking mechanism and a trolley, including a support member and a sliding member; the sliding member includes: a sliding body, slidably disposed on the support member along the extension direction of the support member; the sliding body has two connecting ends disposed on both sides of the support member along the width direction of the support member; two connecting rotating parts, respectively rotatably connected to the two connecting ends; wherein, either the connecting end or the connecting rotating part is provided with a locking part, and the other part is provided with a first recess and a second recess corresponding to the locking part. This application can both restrict the unfolding of the load-bearing basket structure in the folded state and avoid the complicated and cumbersome process of unfolding the load-bearing basket structure. In addition, the support member and the sliding member can be used to support other structures, such as the main railing structure in the load-bearing basket structure, thus expanding the function of the locking mechanism and improving the applicability of the locking mechanism in this application.

Description

Technical Field

[0001] This utility model relates to the field of trolley locking, specifically to a locking mechanism and a trolley. Background Technology

[0002] Locking mechanisms are fundamental components in mechanical systems used to limit the unintended movement of movable parts. Their core function is to ensure that the parts remain stable in a specific position through mechanical constraints, preventing positional deviations caused by force, vibration, or accidental contact.

[0003] Currently, the locking mechanisms widely used in the industry are all designed with "single locking" as the core objective. Common implementation forms include pin locking, snap locking, threaded locking, and friction locking. Pin locking forms a rigid constraint by inserting a pin into a preset hole. Snap locking relies on the engagement of an elastic component with a slot to limit displacement. Threaded locking uses the axial pressure generated by tightening the threaded pair to achieve fixation. Friction locking increases the friction of the contact surface to hinder relative movement.

[0004] These locking mechanisms are used in various types of equipment requiring fixed positions. For example, in foldable support baskets, they are used to lock the position of the support after it has been unfolded or folded; in industrial adjustable supports, they are used to fix the support height; in household folding furniture, they are used to ensure structural stability in the folded state; and in medical device support structures, they are used to ensure the reliable position of diagnostic and therapeutic components. However, regardless of the application scenario, existing locking mechanisms generally only meet the basic requirement of fixing the position of internal movable components, and their function is relatively simple.

[0005] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0006] The purpose of this utility model is to provide a locking mechanism and a trolley.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] This includes the rotating part connecting the support member and the rotating part connecting the sliding member;

[0009] The sliding member connecting the rotating part includes:

[0010] The sliding main body is connected to the rotating part and is slidably disposed on the rotating part of the support member along the extending direction of the rotating part of the support member; the sliding main body is connected to the rotating part by two connecting ends connected to the rotating part, which are respectively disposed on both sides of the rotating part of the support member along the width direction of the rotating part of the rotating part of the supporting member.

[0011] Two connecting rotating parts are connected to the two connecting end rotating parts respectively, and are rotatably connected to each other.

[0012] Wherein, either the connecting end connecting rotating part or the connecting rotating part is provided with a locking part connecting rotating part, and the other part is provided with a first recessed part connecting rotating part and a second recessed part connecting rotating part corresponding to the locking part connecting rotating part; the locking mechanism is configured such that the locking part connecting rotating part selectively and elastically floats to cooperate with the first recessed part connecting rotating part and the second recessed part connecting rotating part.

[0013] The locking mechanism has a locked state and an unlocked state:

[0014] In the locked state, the locking part connecting the rotating part and the first recessed part connecting the rotating part are locked together to restrict the rotation of the connecting rotating part relative to the connecting end connecting rotating part;

[0015] In the unlocked state, the locking part is connected to the rotating part and the second recessed part is connected to the rotating part, so that the connecting rotating part can rotate relative to the connecting end rotating part.

[0016] When the sliding body moves to the top of the support, the carrying basket structure unfolds for use. At this time, the locking part inserts into the second recess. During the sliding body's movement to the bottom of the support, the connecting rotating part can rotate normally without affecting the storage of the carrying basket structure. When the sliding body reaches the bottom of the support, the carrying basket structure is fully folded. At this time, the locking part inserts into the first recess to restrict the rotation of the connecting rotating part, preventing the carrying basket structure from easily unfolding and failing to achieve stable folding. The locking part is elastic; when the carrying basket structure needs to be unfolded, the operator can simply pry open the main support structure of the carrying basket structure. During this process, the locking part gradually deforms and separates from the first recess, without requiring additional unlocking operations.

[0017] In summary, this application not only ensures the ease of unfolding the folded basket structure but also avoids the complex and cumbersome process of unfolding the basket structure. Furthermore, the support member and sliding body can be used to support other structures, such as the main railing structure within the basket structure, thus expanding the function of the locking mechanism and increasing its applicability. Compared to many existing conventional locking mechanisms, the locking mechanism in this application is better suited for use in carriers such as basket structures.

[0018] Preferably, the locking part is located at the connecting end. It can be understood that locking parts are provided on both connecting ends.

[0019] The specific structure of the locking mechanism is not limited; please refer to the following supplementary explanation:

[0020] In one specific embodiment, the locking part is an elastic pad, such as a rubber pad;

[0021] In another specific embodiment, the locking part is a combination of a spring (such as a compression spring) and a locking block (for insertion into each recess);

[0022] Holes may be provided on the connecting end or the connecting rotating part to accommodate at least a portion of the locking part, thereby facilitating the fitting of the connecting end and the connecting rotating part.

[0023] Preferably, the two connecting ends and the two connecting rotating parts are symmetrically arranged in the width direction of the support member.

[0024] Preferably, in the locked state, the two first recesses are located between the two second recesses in the width direction of the support member.

[0025] In a further technical solution, the locking part can be extended and retracted in the direction of the connecting end toward the adjacent connecting rotating part;

[0026] And / or, the first recess is configured as a cylindrical groove;

[0027] And / or, the second recess is configured as an arc-shaped groove.

[0028] The structures of the first and second recesses can be seen in the attached diagram.

[0029] The cylindrical groove is small in size, making it suitable for locking assembly with the locking mechanism.

[0030] The arc-shaped groove is relatively large, making it suitable for movable assembly with the locking part.

[0031] In a further technical solution, both the opening of the first recess and the end of the locking part corresponding to the first recess are chamfered, so that the end of the locking part can be turned from the first recess into the second recess;

[0032] The wall portion of the second recess near the first recess is a transitional curved surface, so that the end of the locking portion can be rotated from the second recess into the first recess.

[0033] When the locking part is locked to the first recess, the chamfered part of the locking part fits against the chamfered opening of the first recess. During the process of turning the main support structure of the load-bearing basket, the chamfered part of the locking part gradually moves towards the first recess towards the connecting end until it separates from the first recess to release the locking assembly. At this point, the locking part can be considered to be retracting inwards. During the subsequent rotation of the connecting rotating part, the locking part gradually approaches the second recess and then returns to its original position, extending and inserting into the second recess. The separation process of the locking part from the second recess is described above.

[0034] A further technical solution involves providing a spring receiving groove at the shaft connection between the connecting rotating part and the connecting end. A spring is installed in the spring receiving groove, with one end of the spring abutting against the connecting rotating part and the other end abutting against the connecting end. The spring provides an elastic floating force that ensures the connecting rotating part always faces the connecting end. Alternatively, the columnar locking part can be designed as an elastic floating design, also based on the principle of providing a spring on the columnar locking part, ensuring the locking part always faces the first and second recesses.

[0035] The above settings ensure that no additional direct unlocking operation is required during the deployment phase of the load-bearing basket structure.

[0036] A further technical solution also includes a locking component and an unlocking component, wherein one is movably disposed in either the support component or the sliding body, and the other is movably disposed in the other of the support component and the sliding body; the locking component serves as a part for restricting the movement of the sliding body along the extension direction of the support component; the unlocking component serves as a part for releasing the locking component from limiting the sliding body.

[0037] This application illustrates locking and unlocking by moving the sliding body upwards, and then moving it downwards after unlocking. The up and down directions are referenced. Figure 1 The upper and lower ends of the middle support component.

[0038] For ease of explanation and understanding, this embodiment uses the locking mechanism applied to the load-bearing basket structure for illustration, but does not limit the use of the locking mechanism on other carrier structures. The two connecting ends are connected to the main support structure of the load-bearing basket structure.

[0039] When the sliding body moves to the top of the support member, the support basket structure unfolds for use. At this time, the locking mechanism restricts the downward movement of the sliding body, preventing the support basket structure from folding and storing. This ensures the structural stability of the support basket structure during use and avoids safety risks caused by unexpected folding and storage. When the support basket structure needs to be folded and stored, the unlocking mechanism drives the locking mechanism to release the limiting lock on the sliding body, ensuring that the support basket structure can be folded and stored smoothly. It is important to note that the top area of ​​the support member is not limited.

[0040] In summary, the locking mechanism of this application can lock and unlock the sliding member through the locking and unlocking components, thereby achieving locking and unlocking of the structure installed on the sliding member. Furthermore, the support and sliding member can not only support the locking and unlocking components, but also other structures, such as the main railing structure in a load-bearing basket structure. This expands the function of the locking mechanism and increases its applicability. Compared to many existing conventional locking mechanisms, the locking mechanism of this application is better suited for load-bearing basket structures and other similar carriers.

[0041] In a further technical solution, the surface of the support member is recessed to form a recess, and a limiting part is movably provided in the recess. The limiting part constitutes the locking member, and the limiting part can restrict the sliding body from moving along the extension direction of the support member by extending out of the recess.

[0042] The sliding body has a through hole, and a pressing part is movably provided in the opening corresponding to the limiting part. The pressing part constitutes the unlocking member. The pressing part can release the limiting part from the limiting part's limiting lock on the sliding body by pushing the limiting part.

[0043] The support structure can be hollow or solid.

[0044] The recess can be a groove structure or a hole structure, preferably a groove structure.

[0045] The limiting process of the limiting part can be set as follows: the sliding body can move downward along the length direction of the support member, and the limiting part can move and extend (only a part of the limiting part needs to extend) into the recess along the thickness direction of the support member. The part of the limiting part extending into the recess is set as a stop structure. This stop structure cannot move along the length direction of the support member, thereby preventing the sliding body from moving downward, and realizing the limiting and locking of the sliding member and the structure installed on the sliding member. The specific way the stop structure achieves the limiting is not limited here; it can be achieved by conforming to the bottom surface of the sliding body (this is just an example).

[0046] The cooperation process between the limiting part and the pressing part can be set as follows: the limiting part is inserted into the opening to restrict the movement of the sliding body along the length direction of the support. The operator can press the pressing part to make the pressing part move along the thickness direction of the support, thereby pushing the limiting part out of the opening and releasing the limiting part from the limiting lock of the sliding body.

[0047] The pressing part can be pushed completely into the recess without specific restrictions, and can be adjusted according to actual needs.

[0048] The pressing part can be a button, which can protrude outward relative to the sliding body. In this case, a button cover can be fixedly provided on the outer surface of the sliding body. The button cover has a hole-like structure for the button to pass through so that the operator can press the button.

[0049] With the above settings, locking and unlocking of the sliding body can be achieved quickly and stably, and the required structure is relatively simple, thus reducing the risk of malfunction.

[0050] With the above configuration, the pressing part is an exposed structure, which facilitates operation of the pressing part and ensures unlocking efficiency.

[0051] In a further technical solution, the limiting part is movably disposed within the recess along the thickness direction of the support member, and the pressing part is movably disposed within the opening along the thickness direction of the support member.

[0052] This section does not restrict the limiting part to be completely within the recess, nor does it restrict the pressing part to be completely within the recess.

[0053] Based on the movable direction of the limiting part and the pressing part, the movement process of the limiting part and the pressing part is relatively smooth, further ensuring the locking and unlocking efficiency of the sliding body.

[0054] In a further technical solution, the recess includes a first sub-groove and a second sub-groove that are connected to each other, and the limiting part includes a limiting sub-part and a engaging sub-part that are connected to each other. The limiting sub-part and the engaging sub-part correspond to the first sub-groove and the second sub-groove, respectively. The limiting sub-part can restrict the sliding body from moving along the extension direction of the support by extending out of the first sub-groove.

[0055] The dimensions of the second sub-groove and the engaging part are both larger than the dimensions of the first sub-groove, so as to prevent the limiting part from completely separating from the recess.

[0056] Taking the second sub-slot as an example, the engaging part can be described here: the length of the second sub-slot can be greater than the length of the first sub-slot, the width of the second sub-slot can be greater than the width of the first sub-slot, or both.

[0057] The limiting part and the engaging part can be integrally molded.

[0058] When the limiting part is completely inside the recess, the limiting sub-part is located in the first sub-groove and the second sub-groove, and the engaging part is located in the second sub-groove.

[0059] In the limiting part, the actual limiting structure is the limiting sub-part. The limiting sub-part can restrict the movement of the sliding body along the extension direction of the support member by extending out of the first sub-groove, thereby achieving limiting and locking of the sliding member and the structure installed on the sliding member.

[0060] The dimensions of the second sub-slot and the engaging part are both larger than the dimensions of the first sub-slot. As a result, the engaging part cannot enter the first sub-slot, preventing the limiting part from completely separating from the recess. This avoids the limiting part falling off and thus preventing the sliding body from being locked, ensuring the long-term stability of the locking mechanism.

[0061] In a further technical solution, the bottom wall of the recess is inclined downward in the extending direction of the support member, so that a portion of the limiting part can automatically extend out of the recess.

[0062] Alternatively, the limiting part is connected to the wall of the recess via a reset member (not shown in the figure), the reset member being able to cause a portion of the limiting part to automatically extend out of the recess.

[0063] One end of the reset component acts on the limiting part, and the other end acts on the support component.

[0064] The purpose of this part is to allow the limiting part to automatically extend out of the recess, thereby automatically limiting and locking the sliding body and reducing the user's operation steps.

[0065] For example, since the limiting part can automatically extend out of the recess, the limiting part can lock the sliding body in time during the upward movement of the sliding body. The user does not need to observe the position of the sliding body before operating the limiting part, which is simple and convenient.

[0066] The reset element can be a spring structure, such as a compression spring. Alternatively, it can be an existing elastic pad (which can be made of rubber). The reset element only needs to fulfill the above objectives. Similarly, the inclination angle of the bottom wall of the recess is not limited, as long as it meets the above objectives.

[0067] In a further technical solution, the bottom wall or side wall of the limiting part is inclined in the extending direction of the support member, so that the sliding body can push the limiting part into the recess.

[0068] And / or, in the extending direction of the support member, the top surface of the limiting portion is a plane.

[0069] The following explanation uses the inclined bottom wall of the limiting part as an example.

[0070] The tilt angle of the bottom wall of the limiting part is not limited.

[0071] Preferably, the sliding body can fully push the limiting part into the recess.

[0072] The transmission between two structures moving in different directions by setting up inclined planes is an existing technology (referring only to the transmission process), and the principle will not be elaborated here.

[0073] Preferably, the sliding body can be provided with an inclined surface corresponding to the bottom wall of the limiting part to improve the transmission effect between the sliding body and the limiting part.

[0074] To illustrate the effect of this section, an example is given: the sliding body moves upward and gradually touches the bottom wall of the limiting part. Then the sliding body continues to move upward and drives the limiting part to penetrate deeper into the recess. Based on this, the limiting part cannot hinder the upward movement of the sliding body. There is no need to perform an additional operation to move the limiting part to avoid affecting the upward movement of the sliding body, thus simplifying the operation steps in the locking process.

[0075] In a further technical solution, the opening has two openings in the direction of the opening toward the recess, wherein the opening away from the recess is designated as the first opening, and the opening closer to the recess is designated as the second opening;

[0076] The size of the first opening is larger than the size of the second opening.

[0077] The size comparison between the first opening and the second opening can be referenced in the size comparison between the first sub-slot and the second sub-slot mentioned above.

[0078] Taking an example where the length and width of the first opening are greater than the length and width of the second opening, the pressing part can be considered to have a large end and a small end, with the small end located between the large end and the recess. The large end is for the operator to press, and its larger size (compared to the small end) makes it easier for the operator to press and reduces the difficulty of operation. The small end is used to push the limiting part, and its smaller size (compared to the large end) reduces structural costs. In addition, this configuration also limits the range of movement of the small end in the thickness direction of the support member, preventing the small end from obstructing the movement of the sliding body due to its insertion into the recess. Furthermore, because the small end is smaller, at least a portion of the limiting part (the part that abuts against the small end) is smaller, which also reduces structural costs. The recess can also be made smaller, reducing the difficulty of modifying the support member.

[0079] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0080] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0081] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0082] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing this case.

[0083] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0084] The working principle and advantages of this utility model are as follows:

[0085] For ease of explanation and understanding, this application uses the locking mechanism applied to a load-bearing basket structure for illustration, but does not limit the use of the locking mechanism on other carrier structures. In this case, the two connecting rotating parts are connected to the main support structure of the load-bearing basket structure (such as the left and right upper surrounding rod structure).

[0086] When the sliding body moves to the top of the support, the carrying basket structure unfolds for use. At this time, the locking part inserts into the second recess. During the sliding body's movement to the bottom of the support, the connecting rotating part can rotate normally without affecting the storage of the carrying basket structure. When the sliding body reaches the bottom of the support, the carrying basket structure is fully folded. At this time, the locking part inserts into the first recess to restrict the rotation of the connecting rotating part, preventing the carrying basket structure from easily unfolding and failing to achieve stable folding. The locking part is elastic; when the carrying basket structure needs to be unfolded, the operator can simply pry open the main support structure of the carrying basket structure. During this process, the locking part gradually deforms and separates from the first recess, without requiring additional unlocking operations.

[0087] In summary, this application not only ensures the ease of unfolding the folded basket structure but also avoids the complex and cumbersome process of unfolding the basket structure. Furthermore, the support and sliding components can be used to support other structures, such as the main railing structure within the basket structure, thus expanding the function of the locking mechanism and increasing its applicability. Compared to many existing conventional locking mechanisms, the locking mechanism in this application is better suited for use in carriers such as basket structures. Attached Figure Description

[0088] Figure 1 This is a schematic diagram of the structure of the load-bearing basket in the unfolded state, representing an embodiment of the present invention.

[0089] Figure 2 This is a schematic diagram of the structure of the bearing basket structure in which the locking mechanism of this utility model is applied during the state switching process;

[0090] Figure 3 This is a schematic diagram of the locking mechanism of the present invention applied to the load-bearing basket structure in a folded state, according to an embodiment of the present invention.

[0091] Figure 4 This is a schematic diagram showing the positions of the support member and the limiting part in an embodiment of this utility model;

[0092] Figure 5 This is a schematic diagram of the limiting part in an embodiment of the present utility model;

[0093] Figure 6This is a schematic diagram showing the positions of the sliding body and the pressing part in an embodiment of this utility model;

[0094] Figure 7 This is a schematic diagram of the structure of the sliding body in an embodiment of the present invention;

[0095] Figure 8 This is a schematic diagram of the locking mechanism in the locked state according to an embodiment of the present invention;

[0096] Figure 9 This is a schematic diagram showing the positions of the sliding body and the locking part in an embodiment of this utility model;

[0097] Figure 10 This is a schematic diagram of the structure of the rotating part in an embodiment of the present invention;

[0098] Figure 11 This is a schematic diagram of the structure of the rotating part in the locked state according to an embodiment of the present invention;

[0099] Figure 12 This is a cross-sectional view of the rotating part of this utility model in a locked state.

[0100] In the above figures: 1. Support member; 11. Recess; 2. Sliding member; 21. Opening; 211. First opening; 212. Second opening; 22. Sliding body; 221. Connecting end; 23. Connecting rotating part; 3. Locking member; 4. Unlocking member; 5. Limiting part; 51. Limiting sub-part; 52. Engaging part; 6. Pressing part; 7. Bearing basket structure; 8. Locking part; 9. First recess; 10. Second recess. Detailed Implementation

[0101] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0102] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0103] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0104] See Figures 1-12 A locking mechanism includes a support member 1 and a sliding member 2;

[0105] The slider 2 includes:

[0106] The sliding body 22 is slidably disposed on the support member 1 along the extending direction of the support member 1; the sliding body 22 has two connecting ends 221 disposed on both sides of the support member 1 along the width direction of the support member 1.

[0107] Two connecting rotating parts 23 are respectively rotatably connected to the two connecting ends 221;

[0108] Wherein, either the connecting end 221 or the connecting rotating part 23 is provided with a locking part 8, and the other part is provided with a first recessed part 9 and a second recessed part 10 corresponding to the locking part 8; the locking mechanism is configured such that the locking part 8 selectively and elastically floats and cooperates with the first recessed part 9 and the second recessed part 10.

[0109] The locking mechanism has a locked state and an unlocked state:

[0110] In the locked state, the locking part 8 is locked and assembled with the first recessed part 9 to restrict the rotation of the connecting rotating part 23 relative to the sliding body 22 (or the connecting end 221).

[0111] In the unlocked state, the locking part 8 is movably assembled with the second recessed part 10 so that the connecting rotating part 23 can rotate relative to the sliding body 22.

[0112] This application also discloses a trolley comprising a folding carrying basket, the folding carrying basket including a locking mechanism as described above and below.

[0113] For ease of explanation and understanding, this embodiment uses the locking mechanism applied to the carrying basket structure 7, but does not limit the use of the locking mechanism on other carrier structures. The two connecting rotating parts 23 are connected to the main support structure of the carrying basket structure 7 (such as the left and right upper surrounding rod structures).

[0114] When the sliding body 22 moves to the top of the support member 1, the carrying basket structure 7 unfolds for use. At this time, the locking part 8 is inserted into the second recess 10. During the process of the sliding body 22 moving to the bottom of the support member 1, the connecting rotating part 23 can rotate normally without affecting the storage of the carrying basket structure 7. When the sliding body 22 moves to the bottom of the support member 1, the carrying basket structure 7 is fully stored. At this time, the locking part 8 is inserted into the first recess 9 to restrict the rotation of the connecting rotating part 23, preventing the carrying basket structure 7 from easily unfolding (not impossible to unfold) and thus failing to achieve stable folding. The locking part 8 is elastic. When the carrying basket structure 7 needs to be unfolded, the operator can directly pry open the main support structure of the carrying basket structure 7 (such as the left and right upper rail structures mentioned above). During this process, the locking part 8 gradually deforms and separates from the first recess 9, without the need for additional unlocking operations.

[0115] In summary, this embodiment effectively limits the ease of unfolding the folded basket structure 7 while avoiding a complex and cumbersome unfolding process. Furthermore, the support member 1 and the sliding member 2 can be used to support other structures, such as the main railing (support) structure within the basket structure 7, thus expanding the function of the locking mechanism and increasing its applicability. Compared to many existing conventional locking mechanisms, the locking mechanism in this embodiment is better suited for carrier structures such as the basket structure 7.

[0116] Preferably, the locking part 8 is provided on the connecting end 221. It can be understood that the locking part 8 is provided on both connecting ends 221.

[0117] The specific structure of the locking part 8 is not limited; please refer to the following supplementary explanation:

[0118] In one specific embodiment, the locking part 8 is an elastic pad, such as a rubber pad;

[0119] In another specific embodiment, the locking part 8 is a combination of a spring (such as a compression spring) and a locking block (for insertion into each recess);

[0120] Holes may be provided on the connecting end 221 or the connecting rotating part 23 to accommodate at least a portion of the locking part 8, thereby facilitating the fitting of the connecting end 221 with the connecting rotating part 23.

[0121] Preferably, the two connecting ends 221 and the two connecting rotating parts 23 are symmetrically arranged in the width direction of the support member 1.

[0122] Preferably, in the locked state, in the width direction of the support member 1, the two first recesses 9 are located between the two second recesses 10.

[0123] See Figure 9 In this embodiment, the locking part 8 is extendable and retractable in the direction of the connecting end 221 toward the adjacent connecting rotating part 23;

[0124] And / or, the first recessed portion 9 is configured as a cylindrical groove;

[0125] And / or, the second recess 10 is configured as an arc-shaped groove.

[0126] The first recessed portion 9 and the second recessed portion 10 can be a porous structure.

[0127] The structure of the first recess 9 and the second recess 10 can be seen in the attached drawings.

[0128] The cylindrical groove is small in size, making it suitable for locking assembly with locking part 8.

[0129] The arc-shaped groove is large in size, making it suitable for movable assembly with the locking part 8.

[0130] See Figures 9-10 In this embodiment, the opening of the first recessed portion 9 and the end of the locking portion 8 corresponding to the first recessed portion 9 are both chamfered, so that the end of the locking portion 8 can be rotated from the first recessed portion 9 into the second recessed portion 10.

[0131] The wall of the second recess 10 near the first recess 9 is a transitional curved surface, so that the end of the locking part 8 can be rotated from the second recess 10 into the first recess 9.

[0132] When the locking part 8 is locked to the first recess 9, the chamfered part of the locking part 8 fits against the chamfered opening of the first recess 9. During the process of turning the main support structure of the support basket structure 7, the chamfered part of the locking part 8 gradually moves towards the first recess 9 toward the connecting end 221 until the chamfered part separates from the first recess 9 to release the locking assembly. At this point, the locking part 8 can be considered to have retracted inwards. During the subsequent rotation of the connecting rotating part 23, the locking part 8 gradually approaches the second recess 10 and then returns to its original position, extending and inserting into the second recess 10. The separation process of the locking part 8 and the second recess 10 is described above.

[0133] The above settings ensure that no additional unlocking operation is required during the unfolding phase of the support basket structure 7.

[0134] A further technical solution involves a spring receiving groove at the shaft connection between the connecting rotating part and the connecting end, in which a spring (not shown in the figure) is installed. One end of the spring abuts against the connecting rotating part, and the other end abuts against the connecting end. The spring provides an elastic floating force that ensures the connecting rotating part always faces the connecting end. Alternatively, the columnar locking part can be designed as an elastic floating design, also based on the principle of a spring (not shown in the figure) on the columnar locking part, ensuring the locking part always faces the first and second recesses.

[0135] In this embodiment, a locking member 3 and an unlocking member 4 are also included, wherein one is movably disposed in either the support member 1 or the sliding body 22, and the other is movably disposed in the other of the support member 1 and the sliding body 22; the locking member 3 serves as a component for restricting the movement of the sliding body 22 along the extension direction of the support member 1; and the unlocking member 4 serves as a component for releasing the locking member 3 from limiting the movement of the sliding body 22.

[0136] This embodiment illustrates locking and unlocking by moving the sliding body 22 upwards and then downwards, with the up and down directions referred to in the diagram. Figure 1 The upper and lower ends of the middle support 1.

[0137] When the sliding body 22 moves to the top of the support member 1, the carrying basket structure 7 unfolds for use. At this time, the locking member 3 restricts the sliding body 22 from moving downwards, preventing the carrying basket structure 7 from being folded for storage. This ensures the structural stability of the carrying basket structure 7 during use and avoids safety risks caused by unexpected folding. When the carrying basket structure 7 needs to be folded for storage, the unlocking member 4 drives the locking member 3 to release the limiting lock on the sliding body 22, ensuring that the carrying basket structure 7 can be folded for storage smoothly. It is emphasized that the top area of ​​the support member 1 is not limited.

[0138] In summary, the locking mechanism in this embodiment can lock and unlock the sliding body 22 through the locking member 3 and the unlocking member 4, thereby achieving the locking and unlocking of the structure installed on the sliding member 2. Furthermore, the support member 1 and the sliding member 2 can not only support the locking member 3 and the unlocking member 4, but also support other structures, such as the main railing structure in the carrying basket structure 7. This expands the function of the locking mechanism, thereby increasing its applicability. Compared to many existing conventional locking mechanisms, the locking mechanism in this embodiment is better suited for carriers such as the carrying basket structure 7.

[0139] In some embodiments, the support member 1 has two symmetrically arranged grooves corresponding to the sliding body 22 in the width direction, and the grooves extend along the length direction of the support member 1. The grooves can penetrate through the top end of the support member 1, and the top end of the support member 1 can be detachably equipped with a limiting structure to prevent the sliding body 22 from unexpectedly separating from the groove by moving upward. The cross-section of the groove can be T-shaped. Part of the sliding body 22 is inserted into the two grooves, thereby achieving a stable sliding connection between the sliding body 22 and the support member 1. Compared with only a single groove, the arrangement of two grooves can better ensure a stable sliding connection between the sliding body 22 and the support member 1.

[0140] In some embodiments, the sliding body 22 is arranged in a closed ring shape and surrounds the outer periphery of the support member 1. The sliding body 22 is sleeved on the outside of the support member 1. The sliding body 22 does not have to be a ring structure; for example, it can be approximately a U-shaped structure. However, when the sliding body 22 is arranged in a closed ring shape, the structural strength of the sliding body 22 is higher, and it can better ensure the stable sliding connection between the sliding body 22 and the support member 1.

[0141] See Figures 4-8 In this embodiment, the surface of the support member 1 is recessed to form a recess 11, and a limiting part 5 is movably provided in the recess 11. The limiting part 5 constitutes the locking member 3. The limiting part 5 can restrict the sliding body 22 from moving along the extension direction of the support member 1 by extending out of the recess 11.

[0142] The sliding body 22 is provided with a through hole 21, and a pressing part 6 is movably provided in the opening 21 corresponding to the limiting part 5. The pressing part 6 constitutes the unlocking member 4. The pressing part 6 can release the limiting part 5 from the limiting part 5's limiting lock on the sliding body 22 by pushing the limiting part 5.

[0143] Support 1 can be a hollow structure or a solid structure.

[0144] The recess 11 can be a groove structure or a hole structure, preferably a groove structure.

[0145] The recess 11 is preferably provided at the upper end or top end of the support member 1.

[0146] The opening 21 does not necessarily have to completely penetrate the sliding body 22 along the thickness direction of the support member 1. The specific adjustment depends on the structure and requirements of the sliding body 22. Please refer to the attached diagram. Figure 7 .

[0147] The limiting process of the limiting part 5 can be set as follows: the sliding body 22 can move downward along the length direction of the support member 1, and the limiting part 5 can move and extend (only a part of the limiting part 5 needs to extend) into the recess 11 along the thickness direction of the support member 1. The part of the limiting part 5 extending out of the recess 11 is set as a stop structure. This stop structure cannot move along the length direction of the support member 1, thereby preventing the sliding body 22 from moving downward, and realizing the limiting and locking of the sliding member 2 and the structure installed on the sliding member 2. The specific way the stop structure achieves the limiting is not limited here. It can be achieved by adhering to the bottom surface of the sliding body 22 (only an example is given).

[0148] The cooperation process between the limiting part 5 and the pressing part 6 can be set as follows: the limiting part 5 is inserted into the opening 21 to restrict the movement of the sliding body 22 along the length direction of the support member 1. The operator can press the pressing part 6 to make the pressing part 6 move along the thickness direction of the support member 1, thereby pushing the limiting part 5 out of the opening 21 to release the limiting part 5 from the limiting lock of the sliding body 22.

[0149] The pressing part 6 can push the limiting part 5 completely into the recess 11 without specific restrictions, and can be adjusted according to actual needs.

[0150] The pressing part 6 can be a button, which can protrude outward relative to the sliding body 22. At this time, a button cover can be fixedly provided on the outer surface of the sliding body 22. The button cover has a hole-like structure for the button to pass through so that the operator can press the button.

[0151] With the above settings, locking and unlocking of the sliding body 22 can be achieved quickly and stably, and the required structure is relatively simple, thus reducing the risk of malfunction.

[0152] With the above configuration, the pressing part 6 is an exposed structure, which facilitates operation of the pressing part 6 and ensures unlocking efficiency.

[0153] See Figure 4 , Figure 6 In this embodiment, the limiting part 5 is movably disposed in the recess 11 along the thickness direction of the support member 1, and the pressing part 6 is movably disposed in the opening 21 along the thickness direction of the support member 1.

[0154] This part does not restrict the limiting part 5 to be completely within the recess 11, nor does it restrict the pressing part 6 to be completely within the recess 11.

[0155] Based on the movable direction of the limiting part 5 and the pressing part 6, the movement process of the limiting part 5 and the pressing part 6 is relatively smooth, further ensuring the locking and unlocking efficiency of the sliding body 22.

[0156] See Figure 5 In this embodiment, the recess 11 includes a first sub-groove and a second sub-groove that are connected to each other, and the limiting part 5 includes a limiting sub-part 51 and a engaging sub-part 52 that are connected to each other. The limiting sub-part 51 and the engaging sub-part 52 correspond to the first sub-groove and the second sub-groove, respectively. The limiting sub-part 51 can restrict the sliding body 22 from moving along the extension direction of the support member 1 by extending out of the first sub-groove.

[0157] The size of the second sub-groove and the size of the engaging part 52 are both larger than the size of the first sub-groove, so as to prevent the limiting part 5 from completely separating from the recess 11.

[0158] Taking the second sub-slot as an example, the engaging part 52 can be described here: the length of the second sub-slot can be greater than the length of the first sub-slot, the width of the second sub-slot can be greater than the width of the first sub-slot, or both.

[0159] The limiting part 51 and the engaging part 52 can be integrally formed.

[0160] When the limiting part 5 is completely inside the recess 11, the limiting sub-part 51 is in the first sub-groove and the second sub-groove, and the engaging part 52 is in the second sub-groove.

[0161] In the limiting part 5, the actual limiting structure is the limiting sub-part 51. The limiting sub-part 51 can restrict the sliding body 22 from moving along the extension direction of the support member 1 by extending out of the first sub-groove, thereby achieving limiting and locking of the sliding member 2 and the structure installed on the sliding member 2.

[0162] The dimensions of the second sub-slot and the engaging part 52 are both larger than the dimensions of the first sub-slot. As a result, the engaging part 52 cannot enter the first sub-slot, so that the limiting part 5 cannot be completely separated from the recess 11. This prevents the limiting part 5 from falling off and thus preventing the sliding body 22 from being locked, ensuring the long-term stability of the locking mechanism.

[0163] In this embodiment, in the extending direction of the support member 1, the bottom wall of the recess 11 is inclined downward, so that a portion of the limiting part 5 can automatically extend out of the recess 11.

[0164] Alternatively, the limiting part 5 is connected to the wall of the recess 11 via a reset member (not shown in the figure), and the reset member can cause a portion of the limiting part 5 to automatically extend out of the recess 11.

[0165] One end of the reset member acts on the limiting part 5, and the other end acts on the support member 1.

[0166] The purpose of this part is to allow the limiting part 5 to automatically extend out of the recess 11, thereby automatically limiting and locking the sliding body 22 and reducing the user's operation steps.

[0167] For example, since the limiting part 5 can automatically extend out of the recess 11, the limiting part 5 can lock the sliding body 22 in time during the upward movement of the sliding body 22, so that the user does not need to observe the position of the sliding body 22 before operating the limiting part 5, which is simple and convenient.

[0168] The reset element can be a spring structure, such as a compression spring. Alternatively, it can be an existing elastic pad (which can be made of rubber). The reset element only needs to fulfill the above objectives. Similarly, the inclination angle of the bottom wall of the recess 11 is not limited, as long as it meets the above objectives.

[0169] See Figure 5 In this embodiment, the bottom wall or side wall of the limiting part 5 is inclined in the extending direction of the support member 1 so that the sliding body 22 can push the limiting part 5 into the recess 11.

[0170] And / or, in the extending direction of the support member 1, the top surface of the limiting part 5 is a plane.

[0171] The following description uses the bottom wall of the limiting part 5 as an example of being inclined.

[0172] The tilt angle of the bottom wall of the limiting part 5 is not limited.

[0173] Preferably, the sliding body 22 can completely push the limiting part 5 into the recess 11.

[0174] The transmission between two structures moving in different directions by setting up inclined planes is an existing technology (referring only to the transmission process), and the principle will not be elaborated here.

[0175] Preferably, the sliding body 22 may be provided with an inclined surface corresponding to the bottom wall of the limiting part 5 to improve the transmission effect between the sliding body 22 and the limiting part 5.

[0176] To illustrate the effect of this section, the sliding body 22 moves upward and gradually contacts the bottom wall of the limiting part 5. Then, the sliding body 22 continues to move upward and drives the limiting part 5 to penetrate deeper into the recess 11. Based on this, the limiting part 5 cannot prevent the sliding body 22 from moving upward. There is no need to perform an additional operation to move the limiting part 5 to avoid affecting the upward movement of the sliding body 22, thus simplifying the operation steps in the locking process.

[0177] See Figure 7 In this embodiment, the opening 21 has two openings in the direction of the opening 21 toward the recess 11, wherein the opening away from the recess 11 is designated as the first opening 211, and the opening closer to the recess 11 is designated as the second opening 212.

[0178] The size of the first opening 211 is larger than the size of the second opening 212.

[0179] The size comparison between the first opening 211 and the second opening 212 can be referred to the size comparison between the first sub-slot and the second sub-slot mentioned above.

[0180] Taking the example where the length and width of the first opening 211 are greater than the length and width of the second opening 212, the pressing part 6 can be considered to have a large end and a small end, with the small end located between the large end and the recess 11. The large end is for the operator to press, and its larger size (compared to the small end) makes it easier for the operator to press and reduces the difficulty of operation. The small end is used to push the limiting part 5, and its smaller size (compared to the large end) reduces structural costs. In addition, this setting also limits the range of movement of the small end in the thickness direction of the support member 1, preventing the sliding body 22 from being hindered by the small end being inserted into the recess 11. Furthermore, because the small end is smaller, at least a portion of the limiting part 5 (the portion that abuts against the small end) is smaller, which also reduces structural costs. The recess 11 can also be made smaller, reducing the difficulty of modifying the support member 1.

[0181] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A lock mechanism characterized by: Includes a support member (1) and a sliding member (2); The slider (2) includes: The sliding body (22) is slidably disposed on the support member (1) along the extension direction of the support member (1); the sliding body (22) has two connecting ends (221) disposed on both sides of the support member (1) along the width direction of the support member (1). Two connecting rotating parts (23) are respectively rotatably connected to the two connecting ends (221); The connecting end (221) and the connecting rotating part (23) are provided with a locking part (8), and the other part is provided with a first recess (9) and a second recess (10) corresponding to the locking part (8); the locking mechanism is configured such that the locking part (8) selectively and elastically floats and cooperates with the first recess (9) and the second recess (10); The locking mechanism has a locked state and an unlocked state: In the locked state, the locking part (8) is locked and assembled with the first recessed part (9) to restrict the rotation of the connecting rotating part (23) relative to the connecting end (221); In the unlocked state, the locking part (8) is movably assembled with the second recessed part (10) so that the connecting rotating part (23) can rotate relative to the connecting end (221).

2. The locking mechanism according to claim 1, characterized in that: The locking part (8) is extendable and retractable in the direction of the connecting end (221) toward the adjacent connecting rotating part (23); And / or, the first recess (9) is configured as a cylindrical groove; And / or, the second recess (10) is provided as an arc-shaped groove; And / or, the two connecting ends (221) and the two connecting rotating parts (23) are respectively symmetrically arranged in the width direction of the support member (1); And / or, in the locked state, in the width direction of the support member (1), the first recess (9) is closer to the support member (1) than the second recess (10).

3. The locking mechanism according to claim 1, characterized in that: The opening of the first recess (9) and the end of the locking part (8) corresponding to the first recess (9) are both chamfered so that the end of the locking part (8) can be turned from the first recess (9) into the second recess (10). The wall of the second recess (10) near the first recess (9) is a transitional curved surface so that the end of the locking part (8) can be moved from the second recess (10) into the first recess (9).

4. A locking mechanism according to claim 1, characterized in that: A spring receiving groove is provided at the shaft connection between the connecting rotating part (23) and the connecting end (221). A spring is installed in the spring receiving groove. One end of the spring abuts against the connecting rotating part (23) and the other end abuts against the connecting end (221). The spring provides the connecting rotating part (23) with an elastic floating force that enables it to always face the connecting end (221). Alternatively, a spring can be provided on the locking part so that the locking part always floats elastically toward the first recess and the second recess.

5. A locking mechanism according to any one of claims 1-4, characterized in that: It also includes a locking element (3) and an unlocking element (4), one of which is movably disposed in either the support element (1) or the sliding body (22), and the other is movably disposed in the other of the support element (1) and the sliding body (22); the locking element (3) is a component for restricting the movement of the sliding body (22) along the extension direction of the support element (1); the unlocking element (4) is a component for releasing the locking element (3) from limiting the sliding body (22).

6. A locking mechanism according to claim 5, characterized in that: The surface of the support member (1) is recessed to form a recess (11), and a limiting part (5) is movably provided in the recess (11). The limiting part (5) constitutes the locking member (3). The limiting part (5) can restrict the sliding body (22) from moving along the extension direction of the support member (1) by extending out of the recess (11). The sliding body (22) is provided with a through hole (21), and a pressing part (6) is provided in the opening (21) corresponding to the limiting part (5). The pressing part (6) constitutes the unlocking member (4). The pressing part (6) can release the limiting part (5) from locking the sliding body (22) by pushing the limiting part (5).

7. A locking mechanism according to claim 6, characterized in that: The limiting part (5) is movably disposed in the recess (11) along the thickness direction of the support member (1), and the pressing part (6) is movably disposed in the opening (21) along the thickness direction of the support member (1).

8. A locking mechanism according to claim 6, characterized in that: The recess (11) includes a first sub-groove and a second sub-groove that are connected to each other. The limiting part (5) includes a limiting sub-part (51) and a locking part (52) that are connected to each other. The limiting sub-part (51) and the locking part (52) correspond to the first sub-groove and the second sub-groove, respectively. The limiting sub-part (51) can restrict the sliding body (22) from moving along the extension direction of the support member (1) by extending out of the first sub-groove. The size of the second sub-groove and the size of the engaging part (52) are both larger than the size of the first sub-groove, so as to restrict the complete separation of the limiting part (5) and the recess (11).

9. A locking mechanism according to claim 6, characterized in that: In the extending direction of the support member (1), the bottom wall or side wall of the limiting part (5) is inclined so that the sliding body (22) can push the limiting part (5) into the recess (11).

10. A locking mechanism according to claim 6, characterized in that: In the direction of the opening (21) toward the recess (11), the opening (21) has two openings, wherein the opening away from the recess (11) is designated as the first opening (211), and the opening closer to the recess (11) is designated as the second opening (212). The size of the first opening (211) is larger than the size of the second opening (212).

11. A trolley, characterized in that, The trolley includes a folding carrying basket, which includes a locking mechanism as described in any one of claims 1 to 10.

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