Bolt, fastening structure and battery

Abstract

The present application relates to the field of batteries, and provides a bolt, a fastening structure and a battery. The bolt comprises a head part, a shank part and a flexible member. The shank part is used for passing through an installation hole of a target member, the head part being connected to one end of the shank part. The flexible member is arranged on the shank part, in the radial direction of the shank part, at least part of the flexible member protruding from the peripheral surface of the shank part. The flexible member is used for fitting the installation hole and pressing against a hole wall surface of the installation hole. The flexible member is arranged on the shank part of the bolt and, in the radial direction of the shank part, at least part of the flexible member protrudes from the peripheral surface of the shank part. Thus, when the bolt is installed or removed, the flexible member can deform to press against the hole wall surface of the installation hole so as to be in interference fit with the installation hole. As the flexible member is arranged on the shank part and is in interference fit with the installation hole, when being installed or removed, the bolt is less prone to disengagement from the installation hole and falling off, so as to be quickly installed and removed, helping to improve fastening efficiency.

Description

Bolts, locking structures and batteries

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application entitled “Bolt, Locking Structure and Battery” filed on January 2, 2024 (Application No.: 202420013035.8), the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of batteries, and more specifically, to a bolt, a locking structure, and a battery. Background Art

[0004] Batteries are widely used in new energy applications, such as electric vehicles and new energy vehicles. These have become a new trend in the automotive industry. Battery production often involves a locking process, where a first component and a second component are locked together. However, current locking efficiency is low.

[0005] Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a bolt, a locking structure and a battery, which are intended to improve the problem of low locking efficiency in the related art.

[0007] In the first aspect, an embodiment of the present application provides a bolt, which includes a head, a rod and a flexible part, the rod being used to penetrate into the mounting hole of the target part, and the head being connected to one end of the rod; the flexible part is arranged on the rod, and along the radial direction of the rod, the flexible part at least partially protrudes from the outer peripheral surface of the rod, and the flexible part is used to cooperate with the mounting hole and press against the hole wall of the mounting hole.

[0008] In the above technical solution, the bolt's shank is provided with a flexible member that protrudes at least partially from the outer circumference of the shank in the radial direction. During installation or removal of the bolt, the flexible member deforms and presses against the wall of the mounting hole, forming an interference fit with the mounting hole. Because the flexible member is provided on the shank and forms an interference fit with the mounting hole, the bolt is unlikely to disengage from the mounting hole or fall out during installation or removal, thereby facilitating quick installation and removal of the bolt and improving locking efficiency.

[0009] As an optional technical solution of the embodiment of the present application, the flexible member is movably provided on the rod portion along the axial direction of the rod portion.

[0010] In the above technical solution, the flexible part is movably arranged on the rod along the axial direction of the rod, so that when installing or removing the bolt, the flexible part can be interference fit with the mounting hole and remain stationary, and the rod can move relative to the flexible part along the axial direction of the rod (but will not be separated from the flexible part), thereby achieving threaded fit or separation with the threaded hole. In this way, not only can the bolt be kept on the target part and the risk of the bolt falling is reduced, but also the resistance when installing and removing the bolt can be reduced.

[0011] As an optional technical solution of an embodiment of the present application, the bolt includes a limiting structure, and the limiting structure is used to limit the axial movement of the flexible member along the rod.

[0012] In the above technical solution, a limiting structure is provided to limit the axial movement of the flexible member along the rod. On the one hand, this provides the flexible member with sufficient travel to facilitate the threaded engagement and separation of the bolt with the threaded hole during installation and removal. On the other hand, the limiting structure can prevent the flexible member from separating from the rod, thereby allowing the flexible member to partially retain the rod within the mounting hole, reducing the risk of the rod and head falling out of the mounting hole.

[0013] As an optional technical solution of an embodiment of the present application, the limiting structure includes a first limiting portion and a second limiting portion. Along the axial direction of the rod, the flexible part is located between the first limiting portion and the second limiting portion. The first limiting portion and the second limiting portion jointly limit the axial movement of the flexible part along the rod.

[0014] In the above technical solution, the first limiting portion and the second limiting portion are provided to jointly limit the axial movement of the flexible member along the rod portion, so that the flexible member can only move between the first limiting portion and the second limiting portion, which is simple, convenient and easy to manufacture.

[0015] As an optional technical solution of an embodiment of the present application, the first limiting portion protrudes from the outer circumferential surface of the rod portion along the radial direction of the rod portion, and the second limiting portion is the head portion.

[0016] In the above technical solution, the head is used as the second limiting part. In this way, only the first limiting part needs to be set on the rod. The first limiting part and the head together limit the axial movement of the flexible part along the rod, which is conducive to simplifying the structure of the bolt and reducing the manufacturing cost of the bolt.

[0017] As an optional technical solution of an embodiment of the present application, along the axial direction of the rod, the head has an end face facing the rod, and the end face is provided with a receiving groove, which is used to accommodate a part of the flexible part so that at least part of the flexible part protrudes from the end face.

[0018] In the above technical solution, by providing a receiving groove on the end face, when installing or removing the bolt, a part of the flexible part can be accommodated in the mounting hole and interference fit with the mounting hole, and the part of the flexible part located outside the mounting hole can be accommodated in the receiving groove. In this way, the flexible part is not easily blocked between the end face and the target part, and the end face can be in direct rigid contact with the target part, so that the locking force of the bolt is stronger.

[0019] As an optional technical solution of an embodiment of the present application, the flexible member is a flexible sleeve sleeved on the rod portion, and the first limiting portion includes a plurality of protrusions, which are arranged at intervals along the circumference of the rod portion.

[0020] In the above technical solution, the flexible member is a flexible sleeve, which is mounted on the rod. This makes relative movement between the flexible member and the rod more convenient. In addition, since the flexible member is a flexible sleeve, the flexible sleeve will press against the mounting hole on all sides, which will provide a more balanced reaction force on the rod, better stress on the rod, and less likely to tilt. Furthermore, the first limiting portion includes multiple protrusions spaced apart along the circumference of the rod. The multiple protrusions jointly limit the flexible sleeve, making the force on the flexible sleeve more uniform and less likely to be damaged, which is beneficial to increasing the life of the bolt and facilitating the recycling of the bolt.

[0021] As an optional technical solution of an embodiment of the present application, the rod includes a threaded section and a non-threaded section, the threaded section is used to cooperate with the threaded hole, the non-threaded section connects the threaded section and the head, and the first limiting portion is a thread on the threaded section.

[0022] In the above technical solution, the first limiting part is the thread on the rod, and the second limiting part is the head. The thread and the head together limit the axial movement of the flexible part along the rod, which is beneficial to simplify the structure of the bolt and reduce the manufacturing cost of the bolt.

[0023] As an optional technical solution of an embodiment of the present application, the rod portion includes a first threaded segment, a non-threaded segment and a second threaded segment, the first threaded segment is used to cooperate with the threaded hole, the non-threaded segment connects the first threaded segment and the second threaded segment, and along the axial direction of the rod portion, the first threaded segment is farther away from the head than the second threaded segment, the first limiting portion is a thread set on the first threaded segment, and the second limiting portion is a thread set on the second threaded segment.

[0024] In the above technical solution, the first limiting portion is a thread on the first threaded segment, and the second limiting portion is a thread on the second threaded segment. The threads on the first and second threaded segments jointly limit the axial movement of the flexible member along the rod, which helps simplify the bolt structure and reduce the manufacturing cost of the bolt. In addition, the flexible member is arranged in the non-threaded segment, which reduces the resistance to the movement of the flexible member relative to the rod, thereby reducing the resistance during installation and removal of the bolt.

[0025] As an optional technical solution of an embodiment of the present application, the rod portion includes a threaded section and a non-threaded section, the threaded section is used to cooperate with the threaded hole, the non-threaded section connects the threaded section and the head, and the first limiting portion and the second limiting portion both protrude from the outer peripheral surface of the non-threaded section along the radial direction of the rod portion.

[0026] In the above technical solution, both the first and second stoppers protrude radially from the outer circumference of the non-threaded section of the rod, allowing the flexible member to move only between the first and second stoppers. This is simple, convenient, and easy to manufacture. Furthermore, the flexible member's placement in the non-threaded section creates less resistance to movement relative to the rod, reducing resistance during bolt installation and removal.

[0027] As an optional technical solution of the embodiment of the present application, the height of the first limiting portion protruding from the outer circumferential surface of the rod along the radial direction of the rod is H, and the diameter of the rod is D, satisfying: 0.03≤H / D≤0.1.

[0028] In the above technical solution, when H / D ≥ 0.03, the first stopper protrudes a greater height from the outer circumference of the rod in the radial direction of the rod, providing a better limiting effect. When H / D ≤ 0.1, the first stopper protrudes a lesser height from the outer circumference of the rod in the radial direction of the rod, making it less likely that the first stopper will interfere with the wall of the mounting hole, making it easier for the rod to penetrate the mounting hole. When 0.03 ≤ H / D ≤ 0.1, the first stopper can both provide a better limiting effect and reduce the risk of interference between the first stopper and the wall of the mounting hole.

[0029] As an optional technical solution of the embodiment of the present application, 0.05≤H / D≤0.08.

[0030] In the above technical solution, when H / D ≥ 0.05, the first limiter has a better limiting effect. When H / D ≤ 0.08, the first limiter is less likely to interfere with the wall of the mounting hole, making it easier for the rod to penetrate the mounting hole. When 0.05 ≤ H / D ≤ 0.08, the first limiter can not only provide a better limiting effect, but also further reduce the risk of interference between the first limiter and the wall of the mounting hole.

[0031] As an optional technical solution of the embodiment of the present application, the stroke of the flexible member is L1, and the length of the rod is L2, which satisfies: 0.1≤L1 / L2≤0.7.

[0032] In the above technical solution, when L1 / L2≥0.1, the stroke of the flexible part is relatively large, the flexible part can be interference-fitted with the mounting hole and remain stationary, and the rod can move axially relative to the flexible part along the rod (but will not separate from the flexible part), thereby achieving engagement or separation with the threaded hole. When L1 / L2≤0.7, the stroke of the flexible part is not too large, so that there is sufficient length on the rod to set the thread, so that the bolt has sufficient connection strength after threading with the threaded hole. When 0.1≤L1 / L2≤0.7, the flexible part can have sufficient stroke to allow the bolt to engage or separate with the threaded hole while maintaining engagement with the mounting hole, and can also have sufficient connection strength after threading with the threaded hole.

[0033] As an optional technical solution of the embodiment of the present application, 0.3≤L1 / L2≤0.5.

[0034] In the above technical solution, when L1 / L2 ≥ 0.3, the travel of the flexible member is greater, allowing the bolt to engage or disengage with the threaded hole without having to remove the flexible member from the mounting hole. When L1 / L2 ≤ 0.5, the bolt and threaded hole have better connection strength after threading. When 0.3 ≤ L1 / L2 ≤ 0.5, the flexible member can be engaged or disengaged with the threaded hole without having to remove the flexible member from the mounting hole, and the bolt and threaded hole have higher connection strength after threading.

[0035] As an optional technical solution of an embodiment of the present application, the flexible part is a flexible sleeve arranged on the rod part, and along the axial direction of the rod part, the outer peripheral surface of the rod part located between the first limiting part and the second limiting part is a cylindrical surface.

[0036] In the above technical solution, the outer peripheral surface of the rod located between the first limiting portion and the second limiting portion is a cylindrical surface, which is relatively smooth, so that the resistance of the flexible part to movement relative to the rod is smaller, which can reduce the resistance when installing and removing the bolt.

[0037] As an optional technical solution of an embodiment of the present application, the flexible part is a flexible sleeve arranged on the rod portion, and the rod portion includes a first end and a second end, and the second end is connected to the head portion; along the axial direction of the rod portion, the diameter of the portion of the rod portion located between the first limiting portion and the second limiting portion gradually increases from the first end to the second end.

[0038] In the above technical solution, the diameter of the portion of the rod located between the first limiting portion and the second limiting portion gradually increases from the first end to the second end. In this way, when installing the bolt, the flexible part will gradually interference fit with the mounting hole, making the fit between the flexible part and the mounting hole more secure.

[0039] As an optional technical solution of an embodiment of the present application, the limiting structure is a limiting groove arranged on the outer peripheral surface of the rod portion, and along the axial direction of the rod portion, the width of the limiting groove is greater than the width of the flexible member.

[0040] In the above technical solution, a limiting groove is provided on the outer peripheral surface of the rod as a limiting structure, the flexible member is at least partially accommodated in the limiting groove, and the groove wall of the limiting groove along the axial direction of the rod can limit the stroke of the flexible member.

[0041] As an optional technical solution of an embodiment of the present application, the limiting groove extends to the head along the axial direction of the rod.

[0042] In the above technical solution, the limiting groove extends to the head, and the side wall of the limiting groove along the axial direction of the rod away from the head and the head together limit the flexible member. In this way, the head is used for limiting, which is conducive to simplifying the structure of the bolt and reducing the manufacturing cost of the bolt.

[0043] As an optional technical solution of the embodiment of the present application, there is a gap between the limiting groove and the head along the axial direction of the rod.

[0044] In the above technical solution, there is a gap between the limiting groove and the head, so the two axially opposite side walls of the limiting groove along the rod portion jointly limit the flexible member, which is simple and convenient.

[0045] As an optional technical solution of an embodiment of the present application, the limiting groove is an annular groove, and the flexible member is a flexible sleeve sleeved on the rod.

[0046] In the above technical solution, the flexible part is a flexible sleeve, and the flexible sleeve is provided on the rod, so that the relative movement of the flexible part and the rod is more convenient. In addition, since the flexible part is a flexible sleeve, the flexible sleeve will press against the mounting hole on all sides, so that the reaction force applied to the rod is more balanced, the rod is better stressed, and the rod is not prone to skew. In addition, the flexible part is provided on the rod, and the flexible part can only move along the axial direction of the rod, and the rod can play a guiding role for the flexible part. The limiting groove is set as an annular groove, and the groove wall of the annular groove is more uniform in the external force on the flexible part when limiting the flexible part, and the flexible sleeve is not easily damaged, which is beneficial to prolonging the life of the bolt and facilitating the recycling of the bolt.

[0047] As an optional technical solution of an embodiment of the present application, the rod has a first end and a second end, the second end is connected to the head, and the diameter of the area of ​​the rod corresponding to the limiting groove gradually increases from the first end to the second end.

[0048] In the above technical solution, the diameter of the area of ​​the rod corresponding to the limit groove gradually increases from the first end to the second end. In this way, when installing the bolt, the flexible part will gradually interference fit with the mounting hole, making the fit between the flexible part and the mounting hole more secure.

[0049] As an optional technical solution of an embodiment of the present application, the diameter of the area of ​​the rod corresponding to the limiting groove is D1, and the diameter of the rod is D, which satisfies: 0.5≤D1 / D≤0.9.

[0050] In the above technical solution, when D1 / D ≥ 0.5, the diameter of the area of ​​the rod corresponding to the limit groove is not too small, so that the area of ​​the rod corresponding to the limit groove has higher strength. When D1 / D ≤ 0.9, the limit groove has a greater depth, which has a better limit effect on the flexible member. When 0.5 ≤ D1 / D ≤ 0.9, both the strength of the rod and the limit effect on the flexible member can be taken into account.

[0051] As an optional technical solution of the embodiment of the present application, 0.6≤D1 / D≤0.8.

[0052] In the above technical solution, when D1 / D ≥ 0.6, the diameter of the area of ​​the rod corresponding to the limit groove is larger, making the area of ​​the rod corresponding to the limit groove have higher strength. When D1 / D ≤ 0.8, the limit groove has a greater depth, which better limits the position of the flexible member. When 0.6 ≤ D1 / D ≤ 0.8, it is possible to better balance the strength of the rod and the limit effect on the flexible member.

[0053] As an optional technical solution of the embodiment of the present application, the flexible member is a flexible sleeve that is sleeved on the rod.

[0054] In the above technical solution, the flexible member is a flexible sleeve that is mounted on the rod. This facilitates relative movement between the flexible member and the rod. Furthermore, because the flexible member is a flexible sleeve, the sleeve presses against the mounting hole on all sides, resulting in a more balanced reaction force on the rod, better stressing the rod and preventing it from tilting. Furthermore, because the flexible member is mounted on the rod, it can only move along the axial direction of the rod, and the rod can guide the flexible member.

[0055] As an optional technical solution of the embodiment of the present application, the flexible member is made of plastic or rubber.

[0056] In the above technical solution, the plastic and rubber materials can stably abut the wall of the mounting hole, achieving an interference fit. Furthermore, the relatively low cost of plastic and rubber materials helps reduce the cost of the bolts. Furthermore, the good wear resistance of plastic and rubber materials can extend the life of the bolts and facilitate their recycling.

[0057] In the second aspect, an embodiment of the present application also provides a locking structure, which includes a first target part, a second target part and the above-mentioned bolt, the first target part has a mounting hole, the second target part has a threaded hole, the rod is passed through the mounting hole and threadedly engaged with the threaded hole, the first target part is closer to the head than the second target part, and the flexible part is pressed against the wall surface of the mounting hole.

[0058] In a third aspect, an embodiment of the present application further provides a battery, which includes the above-mentioned locking structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0060] FIG1 is a schematic diagram of the structure of a bolt provided in some embodiments of the present application;

[0061] FIG2 is a schematic structural diagram of bolts provided in other embodiments of the present application;

[0062] FIG3 is a cross-sectional view of a connection between a bolt and a target part provided in some other embodiments of the present application;

[0063] FIG4 is a schematic structural diagram of a bolt provided in some other embodiments of the present application;

[0064] FIG5 is a schematic structural diagram of a bolt provided in some further embodiments of the present application;

[0065] FIG6 is a cross-sectional view of a connection between a bolt and a target part provided in some other embodiments of the present application;

[0066] FIG7 is a schematic structural diagram of a bolt provided in some embodiments of the present application;

[0067] FIG8 is a cross-sectional view of a connection between a bolt and a target part provided by some other embodiments of the present application;

[0068] FIG9 is a schematic structural diagram of bolts provided in some other embodiments of the present application;

[0069] FIG10 is a schematic structural diagram of bolts provided in some other embodiments of the present application;

[0070] FIG11 is a cross-sectional view of a connection between a bolt and a target member provided in some other embodiments of the present application;

[0071] FIG12 is a schematic structural diagram of bolts provided in some other embodiments of the present application;

[0072] FIG13 is a schematic structural diagram of bolts provided in yet other embodiments of the present application;

[0073] FIG14 is a schematic structural diagram of bolts provided in some other embodiments of the present application;

[0074] FIG15 is a schematic structural diagram of a locking structure provided in some embodiments of the present application.

[0075] Icon: 10-bolt; 100-head; 110-end face; 111-accommodating groove; 200-rod; 210-first end; 220-threaded section; 230-non-threaded section; 240-first threaded section; 250-second threaded section; 300-flexible part; 410-first limiting portion; 411-convex portion; 420-second limiting portion; 430-limiting groove; 20-first target part; 21-mounting hole; 30-second target part; 31-threaded hole. DETAILED DESCRIPTION

[0076] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0077] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0078] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0079] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0080] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0081] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0082] The term "plurality" used in this application refers to two or more (including two).

[0083] Currently, market developments indicate that batteries are increasingly being used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As battery applications continue to expand, market demand is also growing.

[0084] During the production of batteries, a locking process is often involved in which a first target component and a second target component are locked together. However, the current locking efficiency is low.

[0085] When installing and removing bolts, bolts often fall off and may fall into the target part, making it difficult to remove from the target part, resulting in low locking efficiency.

[0086] In view of this, embodiments of the present application provide a bolt comprising a head, a shank, and a flexible member. The shank is configured to penetrate a mounting hole in a target component, and the head is connected to one end of the shank. The flexible member is disposed on the shank, and at least partially protrudes from the outer circumference of the shank in a radial direction of the shank. The flexible member is configured to engage with and press against the wall of the mounting hole.

[0087] The bolt's shank is provided with a flexible member that at least partially protrudes from the outer circumference of the shank in a radial direction. During installation or removal of the bolt, the flexible member deforms and presses against the wall of the mounting hole, forming an interference fit with the mounting hole. Because the flexible member is provided on the shank and forms an interference fit with the mounting hole, the bolt is unlikely to disengage from the mounting hole or fall out during installation or removal, facilitating quick installation and removal of the bolt and improving locking efficiency.

[0088] The technical solution described in the embodiments of this application is applicable to fastening a first target part to a second target part. For example, the first target part may be a battery cell and the second target part may be a box. Using the bolts provided in the embodiments of this application for fastening is not easy to fall off, and has a high fastening efficiency.

[0089] Please refer to Figure 1, which is a schematic diagram of the structure of a bolt 10 provided in some embodiments of the present application. An embodiment of the present application provides a bolt 10, which includes a head 100, a rod 200 and a flexible member 300. The rod 200 is used to penetrate the mounting hole 21 of the target part, and the head 100 is connected to one end of the rod 200. The flexible member 300 is arranged on the rod 200, and along the radial direction of the rod 200, the flexible member 300 at least partially protrudes from the outer peripheral surface of the rod 200. The flexible member 300 is used to cooperate with the mounting hole 21 and press against the hole wall of the mounting hole 21.

[0090] The head 100, also known as the bolt head, can be pressed against a target component and cooperate with the threaded hole 31 to securely connect the two target components. The outer contour of the head 100 can be hexagonal, making it easier to fit with a wrench to tighten the bolt 10. The surface of the head 100 away from the shank 200 can also be provided with a cross slot or a hexagonal socket to facilitate tightening the bolt 10 with tools such as a screwdriver.

[0091] The shank 200, also known as the bolt, is threaded and designed to penetrate the mounting holes 21 of the two target components and engage with the threaded holes 31, thereby securing the two components together. The shank 200 has a first end 210 and a second end, the second end being connected to the head 100. Threads are provided near the first end 210 for engagement with the threaded holes 31.

[0092] The flexible member 300 is a structural component that easily deforms under external forces, such as a plastic or rubber component. In contrast, a rigid member is a structural component that is less susceptible to deformation under external forces, such as a steel rod, iron rod, or wooden rod. The flexible member 300 is disposed on the rod 200 and protrudes radially from the outer circumference of the rod 200. When the bolt 10 is installed, the flexible member 300 deforms and enters the mounting hole 21, forming an interference fit with the mounting hole 21.

[0093] It should be noted that the radial direction of the rod portion 200 refers to the extending direction of the diameter or radius of the circular cross section of the rod portion 200 .

[0094] The shank 200 of the bolt 10 is provided with a flexible member 300, which at least partially protrudes from the outer circumference of the shank 200 in the radial direction. During installation or removal of the bolt 10, the flexible member 300 deforms and presses against the wall of the mounting hole 21, forming an interference fit with the mounting hole 21. Because the flexible member 300 is provided on the shank 200 and forms an interference fit with the mounting hole 21, the bolt 10 is unlikely to disengage from the mounting hole 21 or fall out during installation or removal, thereby facilitating quick installation and removal of the bolt 10 and improving locking efficiency.

[0095] Referring to FIG. 1 , in some embodiments, the flexible member 300 is movably disposed on the rod 200 along the axial direction of the rod 200 .

[0096] The axial direction of the rod 200 refers to the extending direction of the axis of the rod 200. Referring to Figure 1, the axial direction of the rod 200 is the X direction shown in Figure 1.

[0097] When the rod 200 is fixed, the flexible member 300 can move along the axial direction of the rod 200 under external force. Conversely, when the flexible member 300 is fixed, the rod 200 can move along the axial direction of the rod 200 under external force.

[0098] Since the flexible member 300 can move relative to the rod 200 , when installing the bolt 10 , the flexible member 300 can be first fixed with a tool to assist in interference fitting the flexible member 300 with the mounting hole 21 before tightening the bolt 10 .

[0099] By movably arranging the flexible part 300 on the rod 200 along the axial direction of the rod 200, when installing or removing the bolt 10, the flexible part 300 can be interference fit with the mounting hole 21 and remain stationary, and the rod 200 can move axially relative to the flexible part 300 along the rod 200 (but will not separate from the flexible part 300), thereby achieving threaded engagement or separation with the threaded hole 31. In this way, not only can the bolt 10 be maintained on the target part and the risk of the threaded hole 31 falling off be reduced, but the resistance during installation and removal of the bolt 10 can also be reduced.

[0100] Referring to FIG. 1 , in some embodiments, the bolt 10 includes a limiting structure for limiting the axial movement of the flexible member 300 along the rod 200 .

[0101] The limiting structure is a structure for limiting the travel of the flexible member 300 along the axial direction of the rod 200 , that is, the limiting structure can limit the movement of the flexible member 300 relative to the rod 200 within a certain range.

[0102] By providing a limiting structure to limit the axial movement of the flexible member 300 along the rod 200, on the one hand, the flexible member 300 has sufficient travel to facilitate the threaded engagement or separation of the bolt 10 with the threaded hole 31 during installation and removal of the bolt 10. On the other hand, the limiting structure can prevent the flexible member 300 from separating from the rod 200, thereby allowing the flexible member 300 to partially retain the rod 200 within the mounting hole 21, reducing the risk of the rod 200 and head 100 falling out of the mounting hole 21.

[0103] 1 , in some embodiments, the limiting structure includes a first limiting portion 410 and a second limiting portion 420. Along the axial direction of the rod 200, the flexible member 300 is located between the first limiting portion 410 and the second limiting portion 420. The first limiting portion 410 and the second limiting portion 420 together limit the axial movement of the flexible member 300 along the rod 200.

[0104] Along the axial direction of the rod 200, a first stopper 410 and a second stopper 420 are respectively provided on either side of the flexible member 300, and the flexible member 300 can only move between the first stopper 410 and the second stopper 420. The distance that the flexible member 300 can move relative to the rod 200 before the bolt 10 is installed, that is, the distance that the rod 200 can move relative to the flexible member 300 after the bolt 10 is installed, is appropriately set. When the bolt 10 is removed, the flexible member 300 can be separated from the threaded hole 31 without having to disengage the mounting hole 21.

[0105] The first limiting portion 410 and the second limiting portion 420 are provided to jointly limit the axial movement of the flexible member 300 along the rod 200 , so that the flexible member 300 can only move between the first limiting portion 410 and the second limiting portion 420 , which is simple, convenient and easy to manufacture.

[0106] 1 , in some embodiments, the first limiting portion 410 protrudes from the outer circumferential surface of the rod 200 along the radial direction of the rod 200 , and the second limiting portion 420 is the head 100 .

[0107] The first stopper 410 may be a protruding structure protruding from the outer circumference of the rod 200 in the radial direction of the rod 200. The first stopper 410 may be bonded to the rod 200 or welded to the rod 200. Alternatively, the first stopper 410 may be pre-formed during the turning process.

[0108] This embodiment can be applicable to the case where the mounting hole 21 is a stepped hole. In this case, the first limiting portion 410 and the flexible member 300 can be located in the portion with a larger aperture of the stepped hole, and the threaded section 220 of the rod 200 can pass through the portion with a smaller aperture and be connected to the threaded hole 31.

[0109] The head 100 is used as the second limiting portion 420. In this way, only the first limiting portion 410 needs to be set on the rod 200. The first limiting portion 410 and the head 100 together limit the axial movement of the flexible part 300 along the rod 200, which is beneficial to simplify the structure of the bolt 10 and reduce the manufacturing cost of the bolt 10.

[0110] Please refer to Figures 2 and 3. Figure 2 is a schematic structural diagram of a bolt 10 according to another embodiment of the present application. Figure 3 is a cross-sectional view of a bolt 10 connected to a target component according to another embodiment of the present application. In other embodiments, along the axial direction of the rod 200, the head 100 has an end surface 110 facing the rod 200. The end surface 110 is provided with a receiving groove 111, which is used to accommodate a portion of the flexible member 300, so that at least a portion of the flexible member 300 protrudes from the end surface 110.

[0111] The end surface 110 is a surface of the head 100 that faces the rod 200 along the axial direction of the rod 200. Generally speaking, the end surface 110 is in rigid contact with the target part or the gasket to enhance the locking force to the target part.

[0112] The receiving groove 111 is a groove in which the end surface 110 is provided. The receiving groove 111 can be used to receive a portion of the flexible member 300 .

[0113] When installing the bolt 10, at least a portion of the flexible member 300 must have an interference fit with the mounting hole 21. When the flexible member 300 is fully accommodated in the mounting hole 21, the end face 110 can rigidly contact the target part or gasket, providing a strong locking force. In this case, the receiving groove 111 does not need to accommodate the flexible member 300. When the flexible member 300 is partially located within the mounting hole 21 and the other portion is located outside the mounting hole, the other portion of the flexible member 300 can be accommodated in the receiving groove 111, so that the flexible member 300 is not located between the end face 110 and the target part. In this way, the end face 110 can rigidly contact the target part or gasket, thereby ensuring a strong locking force for the bolt 10.

[0114] By providing a receiving groove 111 on the end face 110, when installing or removing the bolt 10, a portion of the flexible member 300 can be accommodated in the mounting hole 21 and interference fit with the mounting hole 21, and the portion of the flexible member 300 located outside the mounting hole 21 can be accommodated in the receiving groove 111. In this way, the flexible member 300 is not easily blocked between the end face 110 and the target part, and the end face 110 can be in direct rigid contact with the target part, so that the locking force of the bolt 10 is stronger.

[0115] 2 and 3 , in some embodiments, the flexible member 300 is a flexible sleeve that is sleeved on the rod 200 . The first position-limiting portion 410 includes a plurality of protrusions 411 , which are arranged at intervals along the circumference of the rod 200 .

[0116] The flexible member 300 is a flexible sleeve, which is sleeved on the rod 200 .

[0117] The circumferential direction of the rod 200 is also the circumferential direction of the rod 200. The first limiting portion 410 includes a plurality of protrusions 411 spaced apart along the circumference of the rod 200. Each protrusion 411 protrudes from the outer circumferential surface of the rod 200 along the radial direction of the rod 200.

[0118] The flexible member 300 is a flexible sleeve, which is mounted on the rod 200. This makes it easier for the flexible member 300 and the rod 200 to move relative to each other. In addition, since the flexible member 300 is a flexible sleeve, the flexible sleeve will press against the mounting hole 21 on all sides. This will provide a more balanced reaction force on the rod 200, better stress on the rod 200, and less likely to tilt. Furthermore, the first limiting portion 410 includes a plurality of protrusions 411 spaced apart along the circumference of the rod 200. The plurality of protrusions 411 jointly limit the flexible sleeve, making the stress on the flexible sleeve more uniform and less likely to be damaged. This is beneficial for increasing the life of the bolt 10 and facilitating the recycling of the bolt 10.

[0119] In other embodiments, the first limiting portion 410 may also be an annular protrusion, which is arranged around the axis of the rod 200 and can also better exert force on the flexible member 300.

[0120] Please refer to Figure 4, which is a schematic diagram of the structure of a bolt 10 provided in some further embodiments of the present application. In some further embodiments, the shank 200 includes a threaded section 220 and a non-threaded section 230. The threaded section 220 is configured to engage with the threaded hole 31, and the non-threaded section 230 connects the threaded section 220 and the head 100. The first stopper 410 is a thread on the threaded section 220.

[0121] The threaded section 220 is provided with threads, while the non-threaded section 230 is not provided with threads. The threaded section 220 is used to be threadedly connected to the threaded hole 31, and the non-threaded section 230 connects the threaded section 220 and the head 100.

[0122] 4 , the first limiting portion 410 is a thread on the threaded segment 220. Since the thread on the threaded segment 220 also protrudes from the outer circumference of the rod 200, the thread on the threaded segment 220 can be used to limit the flexible member 300.

[0123] In the embodiment shown in Figure 4, the first limiting portion 410 is a thread on the rod 200, and the second limiting portion 420 is the head 100. The thread and the head 100 together limit the axial movement of the flexible member 300 along the rod 200, which is beneficial to simplify the structure of the bolt 10 and reduce the manufacturing cost of the bolt 10.

[0124] Please refer to Figures 5 and 6. Figure 5 is a schematic structural diagram of the bolt 10 provided in some further embodiments of the present application. Figure 6 is a cross-sectional view of the bolt 10 provided in some further embodiments of the present application connected to the target part. In some further embodiments, the rod 200 includes a first threaded segment 240, a non-threaded segment 230, and a second threaded segment 250. The first threaded segment 240 is used to cooperate with the threaded hole 31, and the non-threaded segment 230 connects the first threaded segment 240 and the second threaded segment 250. Along the axial direction of the rod 200, the first threaded segment 240 is farther away from the head 100 than the second threaded segment 250. The first limiting portion 410 is a thread provided on the first threaded segment 240, and the second limiting portion 420 is a thread provided on the second threaded segment 250.

[0125] Both the first threaded segment 240 and the second threaded segment 250 are provided with threads. The non-threaded segment 230 is not provided with threads. Along the axial direction of the rod 200, the first threaded segment 240 is further away from the head 100 than the second threaded segment 250. The first threaded segment 240 is used for threaded connection with the threaded hole 31.

[0126] The non-threaded segment 230 connects the first threaded segment 240 and the second threaded segment 250, the first limiting portion 410 is a thread set on the first threaded segment 240, and the second limiting portion 420 is a thread set on the second threaded segment 250. The flexible part 300 is set in the non-threaded segment 230 and can move within the range of the non-threaded segment 230.

[0127] The first limiting portion 410 is a thread on the first threaded segment 240, and the second limiting portion 420 is a thread on the second threaded segment 250. The threads on the first threaded segment 240 and the threads on the second threaded segment 250 together limit the axial movement of the flexible member 300 along the rod 200, thereby simplifying the structure of the bolt 10 and reducing the manufacturing cost of the bolt 10. In addition, the flexible member 300 is disposed in the non-threaded segment 230, which reduces the resistance to movement of the flexible member 300 relative to the rod 200, thereby reducing the resistance during installation and removal of the bolt 10. Because the threads on the rod 200 are used as a limiting structure, the bolt 10 is suitable for most mounting holes 21.

[0128] Please refer to Figures 7 and 8. Figure 7 is a schematic diagram of the structure of a bolt 10 provided in some other embodiments of the present application. Figure 8 is a cross-sectional view of a bolt 10 connected to a target component provided in some other embodiments of the present application. In some other embodiments, the rod 200 includes a threaded section 220 and a non-threaded section 230. The threaded section 220 is configured to engage with the threaded hole 31, and the non-threaded section 230 connects the threaded section 220 and the head 100. The first limiting portion 410 and the second limiting portion 420 both protrude radially from the outer circumference of the non-threaded section 230 along the rod 200.

[0129] In the embodiment shown in Figures 7 and 8, the first limiting portion 410 and the second limiting portion 420 both protrude from the outer circumferential surface of the non-threaded section 230 along the radial direction of the rod 200, and the threads on the head 100 and the threaded section 220 are not used as limiting structures.

[0130] The embodiments shown in Figures 7 and 8 can also be applied to the case where the mounting hole 21 is a stepped hole. In this case, the first limiting portion 410, the flexible member 300 and the second limiting portion 420 can be located in the portion with a larger aperture of the stepped hole, and the threaded section 220 of the rod 200 can pass through the portion with a smaller aperture and be connected to the threaded hole 31.

[0131] The first limiting portion 410 and the second limiting portion 420 both protrude radially from the outer circumference of the non-threaded section 230 of the rod 200, allowing the flexible member 300 to move only between the first limiting portion 410 and the second limiting portion 420. This is simple, convenient, and easy to manufacture. Furthermore, the flexible member 300 is disposed on the non-threaded section 230, which reduces resistance to movement of the flexible member 300 relative to the rod 200, thereby reducing resistance during installation and removal of the bolt 10.

[0132] 3 , 6 and 8 , in some embodiments, the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 in the radial direction of the rod 200 is H, and the diameter of the rod 200 is D, satisfying: 0.03≤H / D≤0.1.

[0133] H represents the height of the first stopper 410 projecting from the outer circumference of the shaft 200 along the radial direction of the shaft 200. Referring to Figure 3 , in the embodiment where the first stopper 410 comprises a protrusion 411, H is the distance between the surface of the protrusion 411 radially furthest from the outer circumference of the shaft 200 and the outer circumference of the shaft 200. Referring to Figure 6 , in the embodiment where the first stopper 410 comprises a thread on the first thread segment 240, H is half the difference between the major diameter and the minor diameter of the thread.

[0134] D represents the diameter of the rod 200. In the embodiment where the first limiting portion 410 is a thread on the first thread segment 240, the diameter of the rod 200 is equal to the minor diameter of the thread.

[0135] H / D represents the ratio of the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 in the radial direction of the rod 200 to the diameter of the rod 200 .

[0136] The ratio of the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 in the radial direction of the rod 200 to the diameter of the rod 200 can be: H / D=0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, etc.

[0137] When H / D ≥ 0.03, the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 in the radial direction of the rod 200 is relatively large, providing a better limiting effect. When H / D ≤ 0.1, the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 in the radial direction of the rod 200 is not excessive, and the first limiting portion 410 is unlikely to interfere with the wall of the mounting hole 21, making it easier for the rod 200 to penetrate the mounting hole 21. When 0.03 ≤ H / D ≤ 0.1, the first limiting portion 410 can both provide a better limiting effect and reduce the risk of interference between the first limiting portion 410 and the wall of the mounting hole 21.

[0138] Optionally, 0.05≤H / D≤0.08.

[0139] The ratio of the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 in the radial direction of the rod 200 to the diameter of the rod 200 can be: H / D=0.05, 0.055, 0.06, 0.065, 0.07, 0.075, 0.08, etc.

[0140] When H / D ≥ 0.05, the first limiting portion 410 has a better limiting effect. When H / D ≤ 0.08, the first limiting portion 410 is less likely to interfere with the wall of the mounting hole 21, making it easier for the rod 200 to penetrate the mounting hole 21. When 0.05 ≤ H / D ≤ 0.08, the first limiting portion 410 can have a better limiting effect and the risk of interference between the first limiting portion 410 and the wall of the mounting hole 21 can be further reduced.

[0141] 3 , 6 and 8 , in some embodiments, the stroke of the flexible member 300 is L1 , the length of the rod 200 is L2 , and the following conditions are satisfied: 0.1≤L1 / L2≤0.7.

[0142] L1 represents the travel of the flexible member 300, that is, the distance the flexible member 300 can move between the first limiting portion 410 and the second limiting portion 420, or the minimum distance between the first limiting portion 410 and the second limiting portion 420 along the axial direction of the rod 200. Referring to FIG3 , in an embodiment where the second limiting portion 420 is a head 100 and the head 100 is provided with a receiving groove 111, L1 is the minimum distance between the bottom wall of the receiving groove 111 and the first limiting portion 410. Referring to FIG6 , in an embodiment where the first limiting portion 410 is a thread provided on the first thread segment 240 and the second limiting portion 420 is a thread provided on the second thread segment 250, L1 is the minimum distance between the first thread segment 240 and the second thread segment 250.

[0143] L2 represents the length of the rod 200, that is, the distance between the surface of the rod 200 facing away from the head 100 and the end surface 110 of the head 100 along the axial direction of the rod 200. It should be noted that in the embodiment where the end surface 110 is provided with a receiving groove 111, the length of the rod 200 does not include the length of the portion of the rod 200 located within the receiving groove 111.

[0144] L1 / L2 represents the ratio of the stroke of the flexible member 300 to the length of the rod 200 .

[0145] The ratio of the stroke of the flexible member 300 to the length of the rod 200 may be: L1 / L2=0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, etc.

[0146] When L1 / L2 ≥ 0.1, the stroke of the flexible member 300 is large, the flexible member 300 can be interference-fitted with the mounting hole 21 and remain stationary, and the rod 200 can move axially relative to the flexible member 300 along the rod 200 (but will not separate from the flexible member 300), thereby achieving engagement with or separation from the threaded hole 31. When L1 / L2 ≤ 0.7, the stroke of the flexible member 300 is not too large, so that there is sufficient length on the rod 200 to set the thread, so that the bolt 10 has sufficient connection strength after threading with the threaded hole 31. When 0.1 ≤ L1 / L2 ≤ 0.7, the flexible member 300 can have a sufficient stroke to allow the bolt 10 to engage or separate with the threaded hole 31 while maintaining engagement with the mounting hole 21, and can also ensure that the bolt 10 has sufficient connection strength after threading with the threaded hole 31.

[0147] Optionally, 0.3≤L1 / L2≤0.5.

[0148] The ratio of the stroke of the flexible member 300 to the length of the rod 200 may be: L1 / L2=0.3, 0.32, 0.35, 0.38, 0.4, 0.42, 0.45, 0.48, 0.5, etc.

[0149] When L1 / L2 ≥ 0.3, the travel of the flexible member 300 is greater, allowing the bolt 10 to engage or disengage with the threaded hole 31 without having to disengage the flexible member 300 from the mounting hole 21. When L1 / L2 ≤ 0.5, the bolt 10 and the threaded hole 31 have a better connection strength after being threaded together. When 0.3 ≤ L1 / L2 ≤ 0.5, the flexible member 300 can engage or disengage with the threaded hole 31 without having to disengage the flexible member 300 from the mounting hole 21, and the connection strength after being threaded together with the threaded hole 31 is also higher.

[0150] 7 and 8 , in some embodiments, the flexible member 300 is a flexible sleeve that is sleeved on the rod 200. Along the axial direction of the rod 200, the outer circumference of the rod 200 between the first limiting portion 410 and the second limiting portion 420 is a cylindrical surface.

[0151] Along the axial direction of the rod 200 , the portion of the rod 200 between the first limiting portion 410 and the second limiting portion 420 is a polished rod.

[0152] Along the axial direction of the rod 200 , the diameters of the rod 200 at various locations between the first limiting portion 410 and the second limiting portion 420 are the same.

[0153] The outer circumferential surface of the rod 200 between the first limiting portion 410 and the second limiting portion 420 is a cylindrical surface. The cylindrical surface is relatively smooth, so that the resistance of the flexible part 300 to movement relative to the rod 200 is smaller, which can reduce the resistance when installing and removing the bolt 10.

[0154] Please refer to Figure 9, which is a schematic diagram of the structure of a bolt 10 provided in some other embodiments of the present application. In some other embodiments, the flexible member 300 is a flexible sleeve that is sleeved over the rod 200. The rod 200 includes a first end 210 and a second end, with the second end connected to the head 100. Along the axial direction of the rod 200, the diameter of the portion of the rod 200 located between the first stop 410 and the second stop 420 gradually increases from the first end 210 to the second end.

[0155] Along the axial direction of the rod portion 200 , the rod portion 200 includes a first end 210 and a second end opposite to each other, wherein the first end 210 is away from the head portion 100 , and the second end is connected to the head portion 100 .

[0156] The flexible member 300 is sleeved on the rod 200 and is located between the first limiting portion 410 and the second limiting portion 420 .

[0157] Along the axial direction of the rod 200, the diameter of the portion of the rod 200 located between the first limiting portion 410 and the second limiting portion 420 gradually increases from the first end 210 to the second end, that is, the diameter of the portion of the rod 200 located between the first limiting portion 410 and the second limiting portion 420 gradually decreases from the second end to the first end 210.

[0158] The diameter of the portion of the rod 200 located between the first limiting portion 410 and the second limiting portion 420 gradually increases from the first end 210 to the second end. In this way, when the bolt 10 is installed, the flexible part 300 will gradually interference fit with the mounting hole 21, making the fit between the flexible part 300 and the mounting hole 21 more secure.

[0159] Please refer to Figures 10 and 11. Figure 10 is a schematic diagram of the structure of a bolt 10 provided in further embodiments of the present application. Figure 11 is a cross-sectional view of a bolt 10 connected to a target component provided in further embodiments of the present application. In further embodiments, the retaining structure is a retaining groove 430 provided on the outer circumference of the rod 200. Along the axial direction of the rod 200, the width of the retaining groove 430 is greater than the width of the flexible member 300.

[0160] The limiting structure is a limiting groove 430 , which can be formed by milling or turning.

[0161] Along the axial direction of the rod portion 200 , the width of the limiting groove 430 is greater than the width of the flexible member 300 , so as to allow the flexible member 300 to move in the limiting groove 430 .

[0162] A limiting groove 430 is provided on the outer peripheral surface of the rod 200 as a limiting structure. The flexible member 300 is at least partially accommodated in the limiting groove 430 . The groove wall of the limiting groove 430 along the axial direction of the rod 200 can limit the stroke of the flexible member 300 .

[0163] 10 and 11 , in some embodiments, along the axial direction of the rod 200 , the limiting groove 430 extends to the head 100 .

[0164] Along the axial direction of the rod portion 200 , the limiting groove 430 extends to the head portion 100 , and there is no space between the limiting groove 430 and the head portion 100 .

[0165] The limiting groove 430 extends to the head 100, and the side wall of the limiting groove 430, which is away from the head 100 along the axial direction of the rod 200, and the head 100, together with the flexible member 300, limit the position. In this way, the head 100 is used for limiting, which is conducive to simplifying the structure of the bolt 10 and reducing the manufacturing cost of the bolt 10.

[0166] Please refer to Figure 12, which is a schematic structural diagram of a bolt 10 provided in some other embodiments of the present application. Along the axial direction of the rod 200, there is a gap between the limiting groove 430 and the head 100.

[0167] There is a gap between the limiting groove 430 and the head 100 , so the two axially opposite side walls of the limiting groove 430 along the rod 200 jointly limit the flexible member 300 , which is simple and convenient.

[0168] Referring to FIG. 12 , in some embodiments, the limiting groove 430 is an annular groove, and the flexible member 300 is a flexible sleeve sleeved on the rod 200 .

[0169] The flexible part 300 is a flexible sleeve, which is sleeved on the rod 200. In this way, the relative movement of the flexible part 300 and the rod 200 is more convenient. In addition, since the flexible part 300 is a flexible sleeve, the flexible sleeve will press against the mounting hole 21 on all sides, so that the reaction force applied to the rod 200 is more balanced, the rod 200 is better stressed, and the rod 200 is not easily skewed. In addition, the flexible part 300 is sleeved on the rod 200, and the flexible part 300 can only move along the axial direction of the rod 200. The rod 200 can play a guiding role for the flexible part 300. The limiting groove 430 is set as an annular groove. When the groove wall of the annular groove limits the flexible part 300, the external force on the flexible part 300 is more uniform, and the flexible sleeve is not easily damaged, which is beneficial to improving the life of the bolt 10 and facilitating the recycling of the bolt 10.

[0170] Please refer to Figure 13, which is a schematic diagram of the structure of a bolt 10 provided in yet other embodiments of the present application. In yet other embodiments, the rod 200 has a first end 210 and a second end, with the second end connected to the head 100. The diameter of the region of the rod 200 corresponding to the retaining groove 430 gradually increases from the first end 210 to the second end.

[0171] “The diameter of the region of the rod 200 corresponding to the limiting groove 430 gradually increases from the first end 210 to the second end” means that the depth of the limiting groove 430 gradually decreases from the first end 210 to the second end.

[0172] The diameter of the area of ​​the rod 200 corresponding to the limiting groove 430 gradually increases from the first end 210 to the second end. In this way, when the bolt 10 is installed, the flexible member 300 will gradually interfere with the mounting hole 21, making the fit between the flexible member 300 and the mounting hole 21 more secure.

[0173] In some embodiments, the diameter of the region of the rod 200 corresponding to the limiting groove 430 is D1, and the diameter of the rod 200 is D, which satisfies: 0.5≤D1 / D≤0.9.

[0174] D1 represents the diameter of the area of ​​the rod 200 corresponding to the limiting groove 430. The maximum diameter of the area of ​​the rod 200 corresponding to the limiting groove 430 is less than or equal to 0.9 times the diameter of the rod 200, and the minimum diameter of the area of ​​the rod 200 corresponding to the limiting groove 430 is greater than or equal to 0.5 times the diameter of the rod 200.

[0175] The ratio of the diameter of the area of ​​the rod 200 corresponding to the limiting groove 430 to the diameter of the rod 200 can be: D1 / D=0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, etc.

[0176] When D1 / D ≥ 0.5, the diameter of the area of ​​the rod 200 corresponding to the retaining groove 430 is not too small, resulting in a higher strength of the area of ​​the rod 200 corresponding to the retaining groove 430. When D1 / D ≤ 0.9, the retaining groove 430 has a greater depth, which better retains the flexible member 300. When 0.5 ≤ D1 / D ≤ 0.9, both the strength of the rod 200 and the retaining effect on the flexible member 300 are achieved.

[0177] Optionally, 0.6≤D1 / D≤0.8.

[0178] The ratio of the diameter of the area of ​​the rod 200 corresponding to the limiting groove 430 to the diameter of the rod 200 can be: D1 / D=0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, etc.

[0179] When D1 / D ≥ 0.6, the diameter of the area of ​​the rod 200 corresponding to the retaining groove 430 is larger, resulting in a higher strength in the area of ​​the rod 200 corresponding to the retaining groove 430. When D1 / D ≤ 0.8, the retaining groove 430 has a greater depth, which better limits the position of the flexible member 300. When 0.6 ≤ D1 / D ≤ 0.8, both the strength of the rod 200 and the retaining effect on the flexible member 300 are better balanced.

[0180] Referring to FIG. 13 , in some embodiments, the flexible member 300 is a flexible sleeve that is sleeved on the rod 200 .

[0181] The flexible member 300 is a flexible sleeve that fits over the rod 200. This facilitates relative movement between the flexible member 300 and the rod 200. Furthermore, because the flexible member 300 is a flexible sleeve, all four sides of the sleeve press against the mounting hole 21. This provides a more balanced reaction force on the rod 200, better supporting the rod 200 and preventing it from tilting. Furthermore, because the flexible member 300 fits over the rod 200, it can only move axially along the rod 200, and the rod 200 serves as a guide for the flexible member 300.

[0182] In some embodiments, the flexible member 300 is made of plastic or rubber.

[0183] Plastic and rubber materials can stably abut the wall of mounting hole 21, achieving an interference fit with mounting hole 21. Furthermore, plastic and rubber materials are relatively low in cost, which helps reduce the cost of bolt 10. Furthermore, plastic and rubber materials have good wear resistance, which can extend the life of bolt 10 and facilitate its recycling.

[0184] Please refer to Figure 14, which is a schematic diagram of the structure of the bolt 10 provided in some other embodiments of the present application. In other embodiments, the flexible member 300 is provided with a clamping block, the outer circumference of the rod portion 200 is provided with a limiting groove 430, and the sidewall of the limiting groove 430 is provided with a clamping groove, and the clamping block and the clamping groove are clamped and slidably engaged.

[0185] Please refer to Figure 15, which is a schematic diagram of the structure of a locking structure 40 provided in some embodiments of the present application. The embodiments of the present application also provide a locking structure, which includes a first target member 20, a second target member 30, and the above-mentioned bolt 10. The first target member 20 has a mounting hole 21, the second target member 30 has a threaded hole 31, and the rod 200 is inserted into the mounting hole 21 and threadedly engaged with the threaded hole 31. The first target member 20 is closer to the head 100 than the second target member 30, and the flexible member 300 presses against the wall of the mounting hole 21.

[0186] An embodiment of the present application further provides a battery, which includes the above-mentioned locking structure.

[0187] According to some embodiments of the present application, please refer to Figures 1 to 10.

[0188] The present invention provides a bolt 10 comprising a head 100, a shank 200, and a flexible member 300. The shank 200 is configured to penetrate a mounting hole 21 of a target component, and the head 100 is connected to one end of the shank 200. The flexible member 300 is disposed on the shank 200 and, along the radial direction of the shank 200, at least partially protrudes from the outer circumference of the shank 200. The flexible member 300 is configured to engage with the mounting hole 21 and press against the wall of the mounting hole 21.

[0189] The shank 200 of the bolt 10 is provided with a flexible member 300, which at least partially protrudes from the outer circumference of the shank 200 in the radial direction. During installation or removal of the bolt 10, the flexible member 300 deforms and presses against the wall of the mounting hole 21, forming an interference fit with the mounting hole 21. Because the flexible member 300 is provided on the shank 200 and forms an interference fit with the mounting hole 21, the bolt 10 is unlikely to disengage from the mounting hole 21 or fall out during installation or removal, thereby facilitating quick installation and removal of the bolt 10 and improving locking efficiency.

[0190] The flexible member 300 is movably provided on the rod 200 along the axial direction of the rod 200. By movably providing the flexible member 300 on the rod 200 along the axial direction of the rod 200, when installing or removing the bolt 10, the flexible member 300 can be interference-fitted with the mounting hole 21 and remain stationary, and the rod 200 can move relative to the flexible member 300 along the axial direction of the rod 200 (but will not be separated from the flexible member 300), thereby achieving threaded engagement with or separation from the threaded hole 31. In this way, not only can the bolt 10 be retained on the target part and the risk of the threaded hole 31 falling off be reduced, but the resistance during installation and removal of the bolt 10 can also be reduced.

[0191] The bolt 10 includes a limiting structure for limiting the axial movement of the flexible member 300 along the rod 200. The limiting structure includes a first limiting portion 410 and a second limiting portion 420. Along the axial direction of the rod 200, the flexible member 300 is located between the first limiting portion 410 and the second limiting portion 420. The first limiting portion 410 and the second limiting portion 420 jointly limit the axial movement of the flexible member 300 along the rod 200. By providing the first limiting portion 410 and the second limiting portion 420 to jointly limit the axial movement of the flexible member 300 along the rod 200, the flexible member 300 can only move between the first limiting portion 410 and the second limiting portion 420. This is simple, convenient, and easy to manufacture.

[0192] The first limiting portion 410 protrudes from the outer circumferential surface of the rod 200 in the radial direction of the rod 200, and the second limiting portion 420 is the head 100. By using the head 100 as the second limiting portion 420, only the first limiting portion 410 needs to be provided on the rod 200. The first limiting portion 410 and the head 100 together limit the axial movement of the flexible member 300 along the rod 200, which helps to simplify the structure of the bolt 10 and reduce the manufacturing cost of the bolt 10.

[0193] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A bolt, wherein, Comprising: A head; A rod portion for inserting into the mounting hole of the target member, and the head is connected to one end of the rod portion; A flexible member disposed on the rod portion. Along the radial direction of the rod portion, at least a part of the flexible member protrudes from the outer peripheral surface of the rod portion, and the flexible member is used for cooperating with the mounting hole and pressing against the hole wall surface of the mounting hole.

2. The bolt according to claim 1, wherein Along the axial direction of the rod portion, the flexible member is movably disposed on the rod portion.

3. The bolt according to claim 2, wherein, The bolt includes a limiting structure for limiting the stroke of the flexible member moving along the axial direction of the rod portion.

4. The bolt according to claim 3, wherein, The limiting structure includes a first limiting portion and a second limiting portion. Along the axial direction of the rod portion, the flexible member is located between the first limiting portion and the second limiting portion, and the first limiting portion and the second limiting portion jointly limit the stroke of the flexible member moving along the axial direction of the rod portion.

5. The bolt according to claim 4, wherein, The first limiting portion protrudes from the outer peripheral surface of the rod portion along the radial direction of the rod portion, and the second limiting portion is the head.

6. The bolt according to claim 5, wherein Along the axial direction of the rod portion, the head has an end face facing the rod portion, and the end face is provided with a receiving groove for receiving a part of the flexible member so that at least a part of the flexible member protrudes from the end face.

7. The bolt according to claim 5 or 6, wherein, The flexible member is a flexible sleeve sleeved on the rod portion, and the first limiting portion includes a plurality of protrusions, and the plurality of protrusions are spaced apart along the circumferential direction of the rod portion.

8. The bolt according to claim 5, wherein, The rod portion includes a threaded section and a non-threaded section. The threaded section is used for cooperating with a threaded hole, and the non-threaded section connects the threaded section and the head. The first limiting portion is the thread on the threaded section.

9. The bolt according to claim 4, wherein, The rod portion includes a first threaded section, a non-threaded section and a second threaded section. The first threaded section is used for cooperating with a threaded hole, and the non-threaded section connects the first threaded section and the second threaded section. Along the axial direction of the rod portion, the first threaded section is farther from the head than the second threaded section. The first limiting portion is the thread provided on the first threaded section, and the second limiting portion is the thread provided on the second threaded section.

10. The bolt according to claim 4, wherein, The rod portion includes a threaded section and a non-threaded section. The threaded section is used for cooperating with a threaded hole, and the non-threaded section connects the threaded section and the head. Both the first limiting portion and the second limiting portion protrude from the outer peripheral surface of the non-threaded section along the radial direction of the rod portion.

11. The bolt according to any one of claims 5-10, wherein, The height H of the first limiting portion protruding from the outer peripheral surface of the rod portion along the radial direction of the rod portion and the diameter D of the rod portion satisfy: 0.03 ≤ H / D ≤ 0.

1.

12. The bolt according to claim 11, wherein, 0.05 ≤ H / D ≤ 0.

08.

13. The bolt according to any one of claims 4-12, wherein, The stroke of the flexible member is L1, and the length of the rod portion is L2, satisfying: 0.1 ≤ L1 / L2 ≤ 0.

7.

14. The bolt according to claim 13, wherein, 0.3 ≤ L1 / L2 ≤ 0.

5.

15. The bolt according to any one of claims 4-14, wherein, The flexible member is a flexible sleeve sleeved on the rod portion. Along the axial direction of the rod portion, the part of the outer peripheral surface of the rod portion located between the first limiting portion and the second limiting portion is a cylindrical surface.

16. The bolt according to any one of claims 4-14, wherein, The flexible member is a flexible sleeve sleeved on the rod portion. The rod portion includes a first end and a second end, and the second end is connected to the head; Axially along the rod portion, the diameter of the portion of the rod portion located between the first limiting portion and the second limiting portion gradually increases in the direction from the first end to the second end.

17. The bolt according to claim 3, wherein, The limiting structure is a limiting groove provided on the outer peripheral surface of the rod portion. Axially along the rod portion, the width of the limiting groove is greater than the width of the flexible member.

18. The bolt according to claim 17, wherein, Axially along the rod portion, the limiting groove extends to the head portion.

19. The bolt according to claim 17, wherein, Axially along the rod portion, there is a gap between the limiting groove and the head portion.

20. The bolt according to any one of claims 17-19, wherein, The limiting groove is an annular groove, and the flexible member is a flexible sleeve sleeved on the rod portion.

21. The bolt according to any one of claims 17-19, wherein, The rod portion has a first end and a second end, the second end is connected to the head portion, and the diameter of the region of the rod portion corresponding to the limiting groove gradually increases in the direction from the first end to the second end.

22. The bolt according to claim 21, wherein, The diameter of the region of the rod portion corresponding to the limiting groove is D1, and the diameter of the rod portion is D, satisfying: 0.5 ≤ D1 / D ≤ 0.

9.

23. The bolt according to claim 22, wherein, 0.6 ≤ D1 / D ≤ 0.

8.

24. The bolt according to any one of claims 1-23, wherein, The flexible member is a flexible sleeve sleeved on the rod portion.

25. The bolt according to any one of claims 1-24, wherein, The flexible member is made of plastic or rubber.

26. A locking structure, wherein, Comprising a first target member, a second target member, and a bolt according to any one of claims 1-25, the first target member has a mounting hole, the second target member has a threaded hole, the rod portion passes through the mounting hole and is in threaded engagement with the threaded hole, the first target member is closer to the head portion than the second target member, and the flexible member presses against the hole wall surface of the mounting hole.

27. A battery, wherein, Comprising a locking structure according to claim 26.

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