Clamping lock structure and trolley

Abstract

The utility model relates to a clamping lock structure and a trolley. The clamping lock structure comprises a clamping rod, a spring, an extrusion part and a base. The clamping rod is sleeved with the spring, the clamping rod passes through the extrusion piece, and the clamping rod is connected with the base; and the clamping lock structure is telescopic. Through the design of the spring, the clamping lock structure can be automatically inserted, the pin inserting process is omitted, the using process is reduced, the adjusting efficiency is improved, and the user experience is improved. And the extrusion part extrudes the fixed seat or the telescopic pipe, so that shaking of the telescopic pipe in the fixed seat is reduced, and the user experience is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of trolley devices, and in particular to a locking structure and a trolley. Background Art

[0002] In existing trolleys, a latch is generally provided to cooperate with a telescopic tube to adjust the height position of the handle, so that the pusher can hold the handle more conveniently according to his or her needs.

[0003] In actual use, the gap between the telescopic tube and the mounting bracket that holds it can easily cause the tube to wobble in the bracket. The wobble becomes more pronounced as the tube is extended, significantly impacting the user experience. Furthermore, the user often has to manually remove, adjust, and insert the pin, which is cumbersome and inconvenient. Utility Model Content

[0004] The present application aims to solve at least one of the above-mentioned technical problems by providing a locking structure and a trolley to ensure that shaking is reduced and the use process is simplified.

[0005] This application provides a locking structure that adopts the following technical solution:

[0006] A locking structure comprises a locking rod, a spring, an extrusion piece, and a base; the spring is sleeved on the locking rod, the locking rod passes through the extrusion piece, and the locking rod is connected to the base, forming a telescopic locking structure.

[0007] Optionally, the extrusion piece is provided with a first convex portion, and the first convex portion is located at one end of the extrusion piece;

[0008] Applying external force to the base to pull the base drives the clamping rod to move, and the spring is compressed;

[0009] When the external force is removed, the spring rebounds and pushes the clamping rod back;

[0010] The clamping rod is provided with a first connecting portion; the base is provided with a second connecting portion; the first connecting portion cooperates with the second connecting portion so that the clamping rod is connected to the base.

[0011] Optionally, a third connecting portion is provided on the extrusion member; a fourth connecting portion is provided on the base; the third connecting portion cooperates with the fourth connecting portion so that the extrusion member is connected to the base, and the base can move on the extrusion member.

[0012] Furthermore, the third connection portion is a concave-convex portion, and the fourth connection portion is a concave-convex portion.

[0013] Optionally, a second protrusion is provided on the extrusion member; a third protrusion is provided on the clamping rod; one end of the spring contacts the second protrusion, and the other end contacts the clamping rod; the second protrusion cooperates with the third protrusion to limit the moving distance of the clamping rod.

[0014] Optionally, the base is provided with roller patterns.

[0015] The present application also provides a trolley, which adopts the following technical solution:

[0016] A trolley, comprising the locking structure described above,

[0017] The trolley further comprises a handle, a telescopic tube, and a fixing seat; the telescopic tube is provided with a clamping hole;

[0018] The first protrusion is used to fix the locking structure on the fixing seat;

[0019] The clamping rod passes through the clamping hole to limit the position of the telescopic tube on the fixing seat (2300);

[0020] The extrusion piece is in close contact with the fixing seat or the telescopic tube.

[0021] Optionally, the first protrusion is provided with a fifth connecting portion;

[0022] The fixing seat includes a fixing member, and the fixing member is provided with a sixth connecting portion;

[0023] The fifth connecting portion cooperates with the sixth connecting portion so that the fixing member is connected to the extrusion member, and the locking structure is fixed to the fixing seat; the extrusion member can extend out of the fixing member.

[0024] Furthermore, the fifth connection portion is threaded, and the sixth connection portion is threaded.

[0025] Furthermore, the fixing member is provided with a fixing hole, the fixing seat is provided with a fixing through hole, and the position of the fixing hole corresponds to the position of the fixing through hole.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The spring design enables the locking structure to be automatically inserted, eliminating the latching process, reducing the usage process, improving adjustment efficiency, and enhancing the user experience.

[0028] 2. The extrusion member squeezes the fixing seat or the extrusion member squeezes the telescopic tube to reduce the shaking of the telescopic tube in the fixing seat, thereby further improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a schematic diagram of the structure of the locking structure of the embodiment of the utility model Figure 1 ;

[0030] Figure 2 yes Figure 1 An exploded schematic diagram of the locking structure of the device shown;

[0031] Figure 3 yes Figure 1 a schematic cross-sectional view of the base in the device shown;

[0032] Figure 4 yes Figure 1 A schematic diagram of the structure of the extrusion member in the device shown;

[0033] Figure 5 yes Figure 1 a schematic cross-sectional view of an extrusion member in the device shown;

[0034] Figure 6 This is a partial cross-sectional view of a trolley according to an embodiment of the present invention. Figure 1 ;

[0035] Figure 7 This is a partial explosion diagram of the trolley of the embodiment of the utility model Figure 1 ;

[0036] Figure 8 This is a schematic diagram of the structure of the locking structure of the embodiment of the utility model Figure 2 ;

[0037] Figure 9 This is a partial explosion diagram of the trolley of the embodiment of the utility model Figure 2 ;

[0038] Figure 10 yes Figure 9 A schematic structural diagram of a fixing member in the device shown;

[0039] Figure 11 This is a partial cross-sectional view of a trolley according to an embodiment of the present invention. Figure 2 ;

[0040] Figure 12 It is a structural schematic diagram of a hand trolley according to an embodiment of the present utility model.

[0041] Explanation of the reference numerals: 1000, locking structure; 100, locking rod; 110, third protrusion; 120, first connecting part; 200, spring; 300, extrusion piece; 310, first protrusion; 311, fifth connecting part; 320, third connecting part; 330, second protrusion; 400, base; 410, fourth connecting part; 420, second connecting part; 430, roller pattern; 2000, trolley; 2100, handle; 2200, telescopic tube; 2210, locking hole; 2300, fixing seat; 2301, fixing through hole; 2310, fixing piece; 2311, sixth connecting part; 2312, fixing hole. DETAILED DESCRIPTION

[0042] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0043] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0044] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0045] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0046] The embodiment of the present application discloses a locking structure. Figure 1-5 A locking structure 1000 includes a locking rod 100, a spring 200, an extrusion member 300, and a base 400. The locking rod 100 is sleeved with the spring 200 and connected to the base 400 through the extrusion member 300. The extrusion member 300 is connected to the base 400.

[0047] The latching structure 1000 is retractable. Specifically, the latching rod 100 is retractable. Applying an external force to the base 400 pulls the base 400, which in turn moves the latching rod 100 and compresses the spring 200. When the external force is removed, the spring 200 returns to its original position, pushing the latching rod 100 back to its initial position, and the base 400 also returns to its initial position. This allows the latching structure to automatically insert.

[0048] Reference Figure 2-5 The clamping rod 100 is provided with a third protrusion 110 and a first connecting portion 120 .

[0049] The extrusion piece 300 is provided with a first protrusion 310 , a third connection portion 320 , and a second protrusion 330 . The first protrusion 310 is located at one end of the extrusion piece 300 , and the third connection portion 320 is located at the other end of the extrusion piece 300 .

[0050] The base 400 is provided with a fourth connection portion 410 , a second connection portion 420 , and a roller pattern 430 .

[0051] Specifically, the spring 200 is located in the extrusion member 300 , with one end thereof contacting the second protrusion 330 and the other end contacting the clamping rod 100 .

[0052] Specifically, the third connection portion 320 cooperates with the fourth connection portion 410 to connect the extrusion member 300 to the base 400. The third connection portion 320 is a concave-convex portion, and the fourth connection portion 410 is a concave-convex portion, so that the extrusion member 300 is located on the base 400 and partially accommodated in the base 400, and also allows the base 400 to move on the extrusion member 300.

[0053] It can be understood that the setting of the third connecting part 320 as a concave-convex part and the fourth connecting part 410 as a concave-convex part is not the only way. The connection form of the third connecting part 320 and the fourth connecting part 410 can also be set to other suitable connection forms. As long as it can be ensured that the extrusion part 300 is connected to the base 400 and the base 400 can be moved on the extrusion part 300, the embodiment of the utility model does not impose specific restrictions on it.

[0054] Specifically, the first connecting portion 120 cooperates with the second connecting portion 420 to connect the clamping rod 100 to the base 400. The first connecting portion 120 is a thread. The third protrusion 110 cooperates with the second protrusion 330 to limit the movement distance of the clamping rod 100.

[0055] It is understood that the specific connection structure of the second connection portion 420 is not specifically limited in the present invention. The configuration of the first connection portion 120 as a thread is not the only configuration. The first connection portion 120 can also be configured as other suitable connection forms, as long as it can ensure the connection between the clamping rod 100 and the base 400. The embodiments of the present invention do not impose specific limitations on such configurations.

[0056] It is understandable that the present application also discloses a trolley. Figure 6-8 and Figure 12 The trolley 2000 includes a locking structure 1000, a handle 2100, a telescopic tube 2200, and a fixing base 2300. The telescopic tube 2200 is connected to the handle 2100 and is accommodated in the fixing base 2300. The locking structure 1000 is installed on the fixing base 2300. The telescopic tube 2200 is provided with a locking hole 2210.

[0057] Specifically, the first protrusion 310 is configured to secure the locking structure 1000 to the fixing base 2300, allowing the locking rod 100 to pass through the locking hole 2210, thereby restricting the position of the telescopic tube 2200 on the fixing base 2300. Applying an external force to the base 400 pulls the base 400, which in turn moves the locking rod 100, freeing it from the locking hole 2210. The position of the telescopic tube 2200 is adjusted, and under the action of the spring 200, the locking rod 100 passes through the locking hole 2210, returning the base 400 to its original position, restricting the position of the telescopic tube 2200 on the fixing base 2300.

[0058] It is understandable that the specific number, distance, and shape of the clamping holes 2210 are designed according to actual needs. As long as the clamping rod 100 can pass through the clamping holes 2210, the present invention does not impose any specific restrictions thereon.

[0059] Specifically, the extruding member 300 is in close contact with the fixing seat 2300, forcing the fixing seat 2300 to be in close contact with the telescopic tube 2200. This can reduce the shaking of the telescopic tube 2200 in the fixing seat 2300.

[0060] It is understandable that the trolley 2000 may also be designed so that the extrusion piece 300 is in close contact with the telescopic tube 2200 , so that the telescopic tube 2200 can be in close contact with the fixing seat 2300 , thereby reducing the shaking of the telescopic tube 2200 in the fixing seat 2300 .

[0061] It is understandable that the embodiment of the present application also discloses another locking structure and trolley. Figure 8-12 The locking structure 1000 includes a locking rod 100, a spring 200, an extrusion member 300, and a base 400. The extrusion member 300 is provided with a first protrusion 310, a third connecting portion 320, and a second protrusion 330. The first protrusion 310 is provided with a fifth connecting portion 311.

[0062] Specifically, the trolley 2000 includes a locking structure 1000, a handle 2100, a telescopic tube 2200, and a fixing base 2300. The fixing base 2300 includes a fixing member 2310, which is fixedly installed in the fixing base 2300 at a position corresponding to the locking structure 1000. The fixing member 2310 has a sixth connecting portion 2311.

[0063] Specifically, the fifth connecting portion 311 cooperates with the sixth connecting portion 2311 to connect the fixing member 2310 to the extrusion member 300, and the locking structure 1000 is installed on the fixing base 2300. The extrusion member 300 can extend out of the fixing member 2310 and abut against the fixing base 2300, forcing the fixing base 2300 to abut against the telescopic tube 2200. This reduces the wobble of the telescopic tube 2200 within the fixing base 2300. The fifth connecting portion 311 is threaded, and the sixth connecting portion 2311 is also threaded.

[0064] It is understandable that the fifth connection part 311 is threaded and the sixth connection part 2311 is threaded, which is not the only way. The connection form between the fifth connection part 311 and the sixth connection part 2311 can also be set to other suitable connection forms. As long as it can ensure that the fixing part 2310 is connected to the extrusion part 300, the embodiment of the utility model does not impose specific restrictions on it.

[0065] Specifically, the fixing member 2310 may be provided with a fixing hole 2312, and the fixing base 2300 may be provided with a fixing through-hole 2301, with the position of the fixing hole 2312 corresponding to the position of the fixing through-hole 2301. Thus, a screw or bolt is passed through the fixing through-hole 2301 and connected to the fixing hole 2312, further strengthening the fixing effect of the fixing member 2310 in the fixing base 2300.

[0066] It is understood that, when the fixing member 2310 can also be provided with a fixing hole 2312, the fixing seat 2300 can be provided with a fixing through hole 2301 as a preferred embodiment. In fact, the setting of the fixing hole 2312 and the fixing through hole 2301 can also be cancelled, and the embodiment of the utility model does not make specific restrictions on it.

[0067] In summary, the present application provides a locking structure and a trolley. The design of the spring 200 enables the locking structure to be automatically inserted, eliminating the need for a latch, reducing the number of steps required, improving adjustment efficiency, and enhancing the user experience. By squeezing the fixing seat 2300 or the extruding member 300 squeezing the telescopic tube 2200, the wobble of the telescopic tube 2200 within the fixing seat 2300 is reduced, further enhancing the user experience.

[0068] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A locking structure, characterized in that: The locking structure (1000) comprises a locking rod (100), a spring (200), an extrusion piece (300), and a base (400); the spring (200) is sleeved on the locking rod (100), the locking rod (100) passes through the extrusion piece (300), and the locking rod (100) is connected to the base (400), forming a telescopic locking structure.

2. A locking structure according to claim 1, characterized in that: The extrusion piece (300) is provided with a first convex portion (310), and the first convex portion (310) is located at one end of the extrusion piece (300); Applying external force to the base (400) to pull the base (400), thereby driving the clamping rod (100) to move and compressing the spring (200); When the external force is removed, the spring (200) rises and pushes the clamping rod (100) back; The clamping rod (100) is provided with a first connecting portion (120); the base (400) is provided with a second connecting portion (420); the first connecting portion (120) cooperates with the second connecting portion (420) so that the clamping rod (100) is connected to the base (400).

3. The locking structure according to claim 1, wherein: The extrusion piece (300) is provided with a third connection part (320); the base (400) is provided with a fourth connection part (410); the third connection part (320) cooperates with the fourth connection part (410) so that the extrusion piece (300) is connected to the base (400), and the base (400) can move on the extrusion piece (300).

4. The locking structure according to claim 3, wherein: The third connecting portion (320) is a concave-convex portion, and the fourth connecting portion (410) is a concave-convex portion.

5. The locking structure according to claim 1, wherein: The extrusion piece (300) is provided with a second convex portion (330); the clamping rod (100) is provided with a third convex portion (110); one end of the spring (200) contacts the second convex portion (330), and the other end contacts the clamping rod (100); the second convex portion (330) cooperates with the third convex portion (110) to limit the moving distance of the clamping rod (100).

6. The locking structure according to claim 1, characterized in that: The base (400) is provided with a roller pattern (430).

7. A trolley comprising the locking structure according to any one of claims 1 to 6, characterized in that: The trolley further comprises a handle (2100), a telescopic tube (2200), and a fixing seat (2300); a clamping hole (2210) is provided on the telescopic tube (2200); The first protrusion (310) is used to fix the locking structure (1000) on the fixing seat (2300); The clamping rod (100) is provided with the clamping hole (2210) to limit the position of the telescopic tube (2200) on the fixing seat (2300); The extrusion piece (300) is in close contact with the fixing seat (2300) or the telescopic tube (2200).

8. The trolley according to claim 7, characterized in that: The first convex portion (310) is provided with a fifth connecting portion (311); The fixing seat (2300) includes a fixing member (2310), and the fixing member (2310) is provided with a sixth connecting portion (2311); The fifth connecting portion (311) cooperates with the sixth connecting portion (2311) so that the fixing member (2310) is connected to the extrusion member (300), and the locking structure (1000) is fixed to the fixing seat (2300); the extrusion member (300) can extend out of the fixing member (2310).

9. The trolley according to claim 8, characterized in that: The fifth connecting portion (311) is threaded, and the sixth connecting portion (2311) is threaded.

10. The trolley according to claim 8, characterized in that: The fixing member (2310) is provided with a fixing hole (2312), and the fixing seat (2300) is provided with a fixing through hole (2301), and the position of the fixing hole (2312) corresponds to the position of the fixing through hole (2301).

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