Bolt, locking structure and battery

Abstract

The utility model provides a bolt, a locking structure and a battery, and relates to the field of batteries. The bolt comprises a head part, a rod part and a flexible part. The rod part penetrates into a mounting hole of a target piece, and the head part is connected to one end of the rod part. The flexible part is arranged on the rod part, and at least part of the flexible part protrudes out of the peripheral face of the rod part in the radial direction of the rod part. The flexible part is used for being matched with the mounting hole and abutting against the hole wall face of the mounting hole. A flexible part is arranged on a rod portion of the bolt, at least part of the flexible part protrudes out of the outer circumferential face of the rod portion in the radial direction of the rod portion, and when the bolt is installed or detached, the flexible part can deform so as to abut against the hole wall face of an installation hole, and interference fit is formed between the flexible part and the installation hole. Due to the fact that the flexible piece is arranged on the rod portion and is in interference fit with the installation hole, when the bolt is installed or detached, the bolt is not prone to being separated from the installation hole and not prone to falling off, the bolt can be conveniently and rapidly installed and detached, and the locking efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a bolt, a locking structure and a battery. Background Art

[0002] Batteries are widely used in the field of new energy, such as electric vehicles and new energy vehicles. New energy vehicles and electric vehicles have become a new trend in the development of the automotive industry. In the production process of batteries, a locking process of locking the first target part and the second target part is often involved. However, the current locking efficiency is low. Utility Model Content

[0003] 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.

[0004] In the first aspect, an embodiment of the present application provides a bolt, which includes a head, a rod and a flexible part, wherein the rod is used to penetrate into the mounting hole of the target part, and the head is 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 surface of the mounting hole.

[0005] In the above technical solution, a flexible member is provided on the rod of the bolt, and the flexible member at least partially protrudes from the outer peripheral surface of the rod along the radial direction of the rod. When installing or removing the bolt, the flexible member can be deformed so as to press against the hole wall of the mounting hole, forming an interference fit with the mounting hole. Since the flexible member is provided on the rod and has an interference fit with the mounting hole, when installing or removing the bolt, the bolt is not easy to separate from the mounting hole or fall off, thereby facilitating rapid installation and removal of the bolt, which is conducive to improving the locking efficiency.

[0006] As an optional technical solution of the embodiment of the present application, the flexible member is movably disposed on the rod portion along the axial direction of the rod portion.

[0007] In the above technical solution, the flexible part is movably arranged on the rod part along the axial direction of the rod part. In this way, when installing or removing the bolt, the flexible part can be interference fit with the mounting hole and remain stationary, and the rod part can move relative to the flexible part along the axial direction of the rod part (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 off is reduced, but also the resistance when installing and removing the bolt can be reduced.

[0008] 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 travel of the flexible member along the axial movement of the rod.

[0009] In the above technical solution, a limiting structure is provided to limit the travel of the flexible member along the axial movement of the rod. On the one hand, the flexible member has a sufficient travel so that the bolt can be threadedly engaged with or separated from the threaded hole when installing and removing the bolt. On the other hand, the limiting structure can limit the separation of the flexible member from the rod, so that the flexible member can keep part of the rod in the mounting hole, reducing the risk of the rod and the head being separated from the mounting hole and falling off.

[0010] 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 portion, 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 portion.

[0011] 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, 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.

[0012] 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.

[0013] In the above technical solution, the head is used as the second limiting portion. In this way, only the first limiting portion needs to be set on the rod. The first limiting portion 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.

[0014] As an optional technical solution of an embodiment of the present application, along the axial direction of the rod portion, the head portion has an end face facing the rod portion, and the end face is provided with a receiving groove, which is used to receive a part of the flexible member so that at least part of the flexible member protrudes from the end face.

[0015] In the above technical solution, by setting 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.

[0016] 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.

[0017] In the above technical solution, the flexible member is a flexible sleeve, and the flexible sleeve is arranged on the rod, so that the relative movement of the flexible member and the rod is more convenient. In addition, since the flexible member 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 easy to be skewed. Furthermore, the first limiting portion includes a plurality of convex portions arranged at intervals along the circumference of the rod, and the plurality of convex portions jointly limit the flexible sleeve, so that the force on the flexible sleeve is more uniform, the flexible sleeve is not easy to be damaged, which is beneficial to prolonging the life of the bolt and facilitating the recycling of the bolt.

[0018] As an optional technical solution of an embodiment of the present application, the rod portion includes a threaded segment and a non-threaded segment, the threaded segment is used to cooperate with the threaded hole, the non-threaded segment connects the threaded segment and the head, and the first limiting portion is a thread on the threaded segment.

[0019] In the above technical solution, the first limiting part is a thread on the rod, and the second limiting part is a 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.

[0020] 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 arranged on the first threaded segment, and the second limiting portion is a thread arranged on the second threaded segment.

[0021] In the above technical solution, the first limiting part is the thread on the first thread segment, the second limiting part is the thread on the second thread segment, and the thread on the first thread segment and the thread on the second thread segment limit the travel of the flexible member along the axial movement of the rod, which is conducive to simplifying the structure of the bolt and reducing the manufacturing cost of the bolt. In addition, the flexible member is arranged in the non-thread segment, and the resistance of the flexible member to the movement of the rod is smaller, which can reduce the resistance when installing and removing the bolt.

[0022] 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 circumferential surface of the non-threaded section along the radial direction of the rod portion.

[0023] In the above technical solution, the first limiting part and the second limiting part both protrude from the outer circumference of the non-threaded section in the radial direction of the rod, so that the flexible member can only move between the first limiting part and the second limiting part, which is simple, convenient and easy to manufacture. In addition, the flexible member is arranged in the non-threaded section, and the resistance of the flexible member to the movement of the rod is smaller, which can reduce the resistance when installing and removing the bolt.

[0024] 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 portion along the radial direction of the rod portion is H, and the diameter of the rod portion is D, satisfying: 0.03≤H / D≤0.1.

[0025] In the above technical solution, when H / D≥0.03, the height of the first limit portion protruding from the outer circumference of the rod portion in the radial direction of the rod portion is relatively large, and has a better limiting effect. When H / D≤0.1, the height of the first limit portion protruding from the outer circumference of the rod portion in the radial direction of the rod portion is not too large, and the first limit portion is not easy to interfere with the wall of the mounting hole, making it easier for the rod to penetrate into the mounting hole. When 0.03≤H / D≤0.1, the first limit portion can have a better limiting effect and reduce the risk of interference between the first limit portion and the wall of the mounting hole.

[0026] As an optional technical solution of the embodiment of the present application, 0.05≤H / D≤0.08.

[0027] In the above technical solution, when H / D≥0.05, the first limit portion has a better limiting effect. When H / D≤0.08, the first limit portion 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 limit portion can have a better limiting effect and the risk of interference between the first limit portion and the wall of the mounting hole can be further reduced.

[0028] As an optional technical solution of an embodiment of the present application, the stroke of the flexible member is L1, and the length of the rod is L2, satisfying: 0.1≤L1 / L2≤0.7.

[0029] In the above technical solution, when L1 / L2≥0.1, the stroke of the flexible member is relatively large, the flexible member can be interference fit with the mounting hole and remain stationary, and the rod can move relative to the flexible member along the axial direction of the rod (but will not separate from the flexible member), thereby achieving engagement or separation with the threaded hole. When L1 / L2≤0.7, the stroke of the flexible member 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 member can have a sufficient stroke, so that the flexible member can be engaged with or separated from the threaded hole while maintaining engagement with the mounting hole, and the bolt can have sufficient connection strength after threading with the threaded hole.

[0030] As an optional technical solution of an embodiment of the present application, 0.3≤L1 / L2≤0.5.

[0031] In the above technical solution, when L1 / L2≥0.3, the stroke of the flexible part is larger, so that the flexible part does not need to be separated from the mounting hole to achieve the matching or separation of the bolt and the threaded hole. When L1 / L2≤0.5, the bolt and the threaded hole have better connection strength after threading. When 0.3≤L1 / L2≤0.5, the flexible part can be matched or separated from the mounting hole without having to be separated from the mounting hole, and the bolt and the threaded hole can have higher connection strength after threading.

[0032] 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 along the axial direction of the rod portion, the outer circumferential surface of the rod portion located between the first limiting portion and the second limiting portion is a cylindrical surface.

[0033] In the above technical solution, the outer circumferential surface of the rod portion 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 the movement of the rod portion is smaller, which can reduce the resistance when installing and removing the bolt.

[0034] As an optional technical solution of an embodiment of the present application, the flexible member is a flexible sleeve that is sleeved 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.

[0035] 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 have an interference fit with the mounting hole, making the fit between the flexible part and the mounting hole more secure.

[0036] 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.

[0037] In the above technical solution, a limiting groove is provided on the outer circumferential 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 travel of the flexible member.

[0038] As an optional technical solution of an embodiment of the present application, along the axial direction of the rod, the limiting groove extends to the head.

[0039] 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.

[0040] As an optional technical solution of an embodiment of the present application, there is a gap between the limiting groove and the head along the axial direction of the rod.

[0041] In the above technical solution, there is a gap between the limiting groove and the head, so the two side walls of the limiting groove opposite to each other along the axial direction of the rod jointly limit the flexible member, which is simple and convenient.

[0042] 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.

[0043] In the above technical solution, the flexible part is a flexible sleeve, and the flexible sleeve is sleeved 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 be pressed 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 easy to be skewed. In addition, the flexible part is sleeved 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. When the groove wall of the annular groove limits the flexible part, the external force on the flexible part is more uniform, and the flexible sleeve is not easy to be damaged, which is beneficial to prolonging the life of the bolt and facilitating the recycling of the bolt.

[0044] 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.

[0045] 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 interfere with the mounting hole, making the fit between the flexible part and the mounting hole more secure.

[0046] 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.

[0047] 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 a higher strength. When D1 / D≤0.9, the limit groove has a greater depth and has a better limiting effect on the flexible member. When 0.5≤D1 / D≤0.9, both the strength of the rod and the limiting effect on the flexible member can be taken into account.

[0048] As an optional technical solution of an embodiment of the present application, 0.6≤D1 / D≤0.8.

[0049] 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, so that the area of ​​the rod corresponding to the limit groove has higher strength. When D1 / D≤0.8, the limit groove has a greater depth and has a better limiting effect on the flexible part. When 0.6≤D1 / D≤0.8, it is possible to better balance the strength of the rod and the limiting effect on the flexible part.

[0050] As an optional technical solution of the embodiment of the present application, the flexible member is a flexible sleeve sleeved on the rod.

[0051] In the above technical solution, the flexible member is a flexible sleeve, and the flexible sleeve is sleeved on the rod, so that the relative movement of the flexible member and the rod is more convenient. In addition, since the flexible member 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 member is sleeved on the rod, and the flexible member can only move along the axial direction of the rod, and the rod can play a guiding role for the flexible member.

[0052] As an optional technical solution of the embodiment of the present application, the flexible member is made of plastic or rubber.

[0053] In the above technical solution, the plastic material and the rubber material can stably abut against the hole wall of the mounting hole to achieve an interference fit with the mounting hole. In addition, the cost of the plastic material and the rubber material is relatively low, which is convenient for reducing the cost of the bolt. Furthermore, the wear resistance of the plastic material and the rubber material is good, which can increase the life of the bolt and facilitate the recycling of the bolt.

[0054] 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 part is passed through the mounting hole and threadedly matched 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 of the mounting hole.

[0055] In a third aspect, an embodiment of the present application further provides a battery, wherein the battery includes the above-mentioned locking structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 A schematic diagram of the structure of a bolt provided in some embodiments of the present application;

[0058] Figure 2 A schematic diagram of the structure of bolts provided in other embodiments of the present application;

[0059] Figure 3 Cross-sectional views of the connection between bolts and target parts provided in other embodiments of the present application;

[0060] Figure 4 A schematic diagram of the structure of bolts provided in some other embodiments of the present application;

[0061] Figure 5 A schematic diagram of the structure of a bolt provided in some further embodiments of the present application;

[0062] Figure 6 A cross-sectional view of a bolt connected to a target part provided in some other embodiments of the present application;

[0063] Figure 7 A schematic diagram of the structure of a bolt provided in some embodiments of the present application;

[0064] Figure 8 A cross-sectional view of a bolt connected to a target part provided in some embodiments of the present application;

[0065] Fig. 9 A schematic diagram of the structure of bolts provided in some other embodiments of the present application;

[0066] Fig.10 A schematic diagram of the structure of bolts provided in some other embodiments of the present application;

[0067] Fig.11 A cross-sectional view of a bolt connected to a target part provided in some other embodiments of the present application;

[0068] Fig.12 A schematic diagram of the structure of bolts provided in some other embodiments of the present application;

[0069] Fig.13 A schematic diagram of the structure of a bolt provided in some embodiments of the present application;

[0070] Fig.14 A schematic diagram of the structure of bolts provided in some embodiments of the present application;

[0071] Fig.15 A schematic diagram of the locking structure provided in some embodiments of the present application.

[0072] 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 part; 411-convex part; 420-second limiting part; 430-limiting groove; 20-first target part; 21-mounting hole; 30-second target part; 31-threaded hole. DETAILED DESCRIPTION

[0073] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0074] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. 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 and secondary relationship.

[0075] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0076] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0078] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0079] The term "plurality" used in the present application refers to two or more (including two).

[0080] At present, from the perspective of market development, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application areas, its market demand is also constantly expanding.

[0081] In the production process of batteries, a locking process of locking a first target component and a second target component is often involved. However, the current locking efficiency is low.

[0082] When installing and removing bolts, bolts often fall off, and the bolts may fall into the target part and be difficult to remove from the target part, resulting in low locking efficiency.

[0083] In view of this, an embodiment of the present application provides a bolt, which includes a head, a rod and a flexible member. The rod is used to penetrate into the mounting hole of the target part, and the head is connected to one end of the rod. The flexible member is arranged on the rod, and along the radial direction of the rod, the flexible member at least partially protrudes from the outer peripheral surface of the rod. The flexible member is used to cooperate with the mounting hole and press against the hole wall of the mounting hole.

[0084] The rod of the bolt is provided with a flexible member, and the flexible member at least partially protrudes from the outer peripheral surface of the rod along the radial direction of the rod. When installing or removing the bolt, the flexible member can be deformed so as to press against the hole wall of the mounting hole, forming an interference fit with the mounting hole. Since the flexible member is provided on the rod and has an interference fit with the mounting hole, when installing or removing the bolt, the bolt is not easy to separate from the mounting hole or fall off, thereby facilitating quick installation and removal of the bolt, which is conducive to improving the locking efficiency.

[0085] The technical solution described in the embodiment of the present application is applicable to the locking of the first target part and the second target part. For example, the first target part may be a battery cell and the second target part may be a box. The bolt provided in the embodiment of the present application is used for locking, and the bolt is not easy to fall off, and has a high locking efficiency.

[0086] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a bolt 10 provided in some embodiments of the present application. The embodiments of the present application provide a bolt 10, which includes a head 100, a rod 200 and a flexible member 300. The rod 200 is used to penetrate into 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.

[0087] The head 100 is also the bolt head. The head 100 can be pressed against the target part. The head 100 cooperates with the threaded hole 31 to connect and limit the two target parts together. The outer contour of the head 100 can be made into a hexagonal shape, so that it is easy to cooperate with a wrench to tighten the bolt 10. A cross groove or a hexagon socket groove can also be set on the surface of the head 100 away from the rod 200, so that it is easy to cooperate with a tool such as a screwdriver to tighten the bolt 10.

[0088] The rod 200 is also a bolt rod, and a thread is provided on the rod 200. The rod 200 is used to penetrate into the mounting holes 21 of the two target parts and be threadedly connected with the threaded holes 31, so as to connect and limit the two target parts together. The rod 200 has a first end 210 and a second end, wherein the second end is connected to the head 100, and a thread is provided near the first end 210 for connecting with the threaded hole 31.

[0089] The flexible part 300 refers to a structural part that is easily deformed under the action of external force, such as a plastic part, a rubber part, etc. In contrast, a rigid part refers to a structural part that is not easily deformed under the action of external force, such as a steel rod, an iron rod, a wooden rod, etc. The flexible part 300 is arranged on the rod part 200 and protrudes from the outer peripheral surface of the rod part 200 along the radial direction of the rod part 200. When the bolt 10 is installed, the flexible part 300 can be deformed and enter the mounting hole 21, forming an interference fit with the mounting hole 21.

[0090] 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 .

[0091] The rod 200 of the bolt 10 is provided with a flexible member 300, and the flexible member 300 at least partially protrudes from the outer peripheral surface of the rod 200 along the radial direction of the rod 200. When installing or removing the bolt 10, the flexible member 300 can be deformed so as to press against the hole wall of the mounting hole 21, and form an interference fit with the mounting hole 21. Since the flexible member 300 is provided on the rod 200 and has an interference fit with the mounting hole 21, when installing or removing the bolt 10, the bolt 10 is not easy to be separated from the mounting hole 21 and is not easy to fall off, so that it is convenient to quickly install and remove the bolt 10, which is conducive to improving the locking efficiency.

[0092] Please refer to Figure 1 In some embodiments, the flexible member 300 is movably disposed on the rod 200 along the axial direction of the rod 200 .

[0093] The axial direction of the rod 200 refers to the extending direction of the axis of the rod 200. Figure 1 , the axial direction of the rod 200 is Figure 1 The X direction shown in .

[0094] When the rod 200 is fixed, the flexible member 300 can move relative to the rod 200 along the axial direction of the rod 200 under the action of external force. Conversely, when the flexible member 300 is fixed, the rod 200 can move relative to the flexible member 300 along the axial direction of the rod 200 under the action of external force.

[0095] 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 , and then the bolt 10 can be tightened.

[0096] By movably arranging 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 fit 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 or separation with the threaded hole 31. In this way, not only can the bolt 10 be kept on the target part and the risk of the threaded hole 31 falling off is reduced, but the resistance during installation and removal of the bolt 10 can also be reduced.

[0097] Please refer to Figure 1 In some embodiments, the bolt 10 includes a limiting structure, which is used to limit the axial movement of the flexible member 300 along the rod 200.

[0098] The limiting structure is a structure used to limit 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.

[0099] By setting a limiting structure to limit the stroke of the flexible member 300 moving axially along the rod 200, on the one hand, the flexible member 300 has a sufficient stroke so that the bolt 10 can be threadedly engaged with or separated from the threaded hole 31 when installing and removing the bolt 10. On the other hand, the limiting structure can limit the separation of the flexible member 300 from the rod 200, so that the flexible member 300 can keep part of the rod 200 in the mounting hole 21, reducing the risk of the rod 200 and the head 100 being separated from the mounting hole 21 and falling off.

[0100] Please refer to Figure 1 In some embodiments, the limiting structure includes a first limiting portion 410 and a second limiting portion 420, and the flexible member 300 is located between the first limiting portion 410 and the second limiting portion 420 along the axial direction of the rod 200. The first limiting portion 410 and the second limiting portion 420 jointly limit the travel of the flexible member 300 along the axial direction of the rod 200.

[0101] Along the axial direction of the rod 200, the first limiting portion 410 and the second limiting portion 420 are respectively arranged on both sides of the flexible member 300, and the flexible member 300 can only move between the first limiting portion 410 and the second limiting portion 420. Before the bolt 10 is installed, the flexible member 300 can move relative to the rod 200, that is, after the bolt 10 is installed, the rod 200 can move relative to the flexible member 300. As long as this distance is set appropriately, when the bolt 10 is removed, the flexible member 300 does not need to be separated from the mounting hole 21, and the rod 200 can be separated from the threaded hole 31.

[0102] 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.

[0103] Please refer to Figure 1 In some embodiments, the first limiting portion 410 protrudes from the outer circumferential surface of the rod portion 200 along the radial direction of the rod portion 200 , and the second limiting portion 420 is the head portion 100 .

[0104] The first position limiting portion 410 may be a protruding structure protruding from the outer peripheral surface of the rod portion 200 along the radial direction of the rod portion 200. The first position limiting portion 410 may be bonded to the rod portion 200 or welded to the rod portion 200. Optionally, the first position limiting portion 410 may also be formed in advance during turning.

[0105] 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 at 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 of the stepped hole and be connected to the threaded hole 31.

[0106] The head 100 is used as the second limiting portion 420. Thus, 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 is beneficial to simplify the structure of the bolt 10 and reduce the manufacturing cost of the bolt 10.

[0107] Please refer to Figure 2 and Figure 3 , Figure 2 Schematic diagram of the structure of the bolt 10 provided in some other embodiments of the present application. Figure 3 The cross-sectional view of the bolt 10 connected to the target part provided in other embodiments of the present application. In other embodiments, along the axial direction of the rod 200, the head 100 has an end face 110 facing the rod 200. The end face 110 is provided with a receiving groove 111, and the receiving groove 111 is used to receive a part of the flexible member 300, so that at least a part of the flexible member 300 protrudes from the end face 110.

[0108] The end surface 110 is a surface of the head 100 facing 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.

[0109] The receiving groove 111 is a groove in which the end surface 110 is disposed. The receiving groove 111 can be used to receive a portion of the flexible member 300 .

[0110] When installing the bolt 10, at least part of the flexible member 300 must be interference fit with the mounting hole 21. When the flexible member 300 is completely accommodated in the mounting hole 21, the end face 110 can be in rigid contact with the target part or the gasket, and has a greater locking force. At this time, the receiving groove 111 does not need to accommodate the flexible member 300. When part of the flexible member 300 is located in the mounting hole 21 and the other part is located outside the mounting hole, the other part of the flexible member 300 can be accommodated in the receiving groove 111, so that the flexible member 300 will not be located between the end face 110 and the target part. In this way, the end face 110 can be in rigid contact with the target part or the gasket, so that the bolt 10 has a greater locking force.

[0111] 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 have an 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.

[0112] Please refer to Figure 2 and Figure 3 In some embodiments, the flexible member 300 is a flexible sleeve sleeved on the rod 200. The first position limiting portion 410 includes a plurality of convex portions 411, and the plurality of convex portions 411 are arranged at intervals along the circumference of the rod 200.

[0113] The flexible member 300 is a flexible sleeve, and the flexible sleeve is sleeved on the rod 200 .

[0114] The circumferential direction of the rod 200 is also the circumferential direction of the rod 200. The first position limiting portion 410 includes a plurality of convex portions 411 arranged at intervals along the circumferential direction of the rod 200. Each convex portion 411 protrudes from the outer circumferential surface of the rod 200 along the radial direction of the rod 200.

[0115] The flexible member 300 is a flexible sleeve, and the flexible sleeve is arranged on the rod 200, so that the flexible member 300 and the rod 200 can move relative to each other more conveniently. In addition, since the flexible member 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 easy to be skewed. Furthermore, the first limiting portion 410 includes a plurality of convex portions 411 arranged at intervals along the circumference of the rod 200, and the plurality of convex portions 411 jointly limit the flexible sleeve, so that the force on the flexible sleeve is more uniform, and the flexible sleeve is not easy to be damaged, which is beneficial to prolonging the life of the bolt 10 and facilitating the recycling of the bolt 10.

[0116] 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 .

[0117] Please refer to Figure 4 , Figure 4 The schematic diagram of the structure of the bolt 10 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 used to cooperate with the threaded hole 31, and the non-threaded section 230 connects the threaded section 220 and the head 100. The first limit portion 410 is a thread on the threaded section 220.

[0118] The threaded section 220 is provided with threads, and the non-threaded section 230 is not provided with threads. The threaded section 220 is used for threaded connection with the threaded hole 31 , and the non-threaded section 230 connects the threaded section 220 and the head 100 .

[0119] exist Figure 4 In the illustrated embodiment, the first limiting portion 410 is a thread on the thread segment 220. Since the thread on the thread segment 220 also protrudes from the outer circumference of the rod 200, the thread on the thread segment 220 can be used to limit the flexible member 300.

[0120] exist Figure 4 In the illustrated embodiment, 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.

[0121] Please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic structural diagram of a bolt 10 provided in some further embodiments of the present application. Figure 6 A cross-sectional view of a bolt 10 connected to a target part provided in some other embodiments of the present application. In some other 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.

[0122] The first threaded section 240 and the second threaded section 250 are both provided with threads. The non-threaded section 230 is not provided with threads. Along the axial direction of the rod 200, the first threaded section 240 is further away from the head 100 than the second threaded section 250, and the first threaded section 240 is used for threaded connection with the threaded hole 31.

[0123] 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 arranged on the first threaded segment 240 , and the second limiting portion 420 is a thread arranged on the second threaded segment 250 , and the flexible member 300 is arranged on the non-threaded segment 230 and can move within the range of the non-threaded segment 230 .

[0124] The first limiting portion 410 is a thread on the first thread segment 240, and the second limiting portion 420 is a thread on the second thread segment 250. The threads on the first thread segment 240 and the threads on the second thread segment 250 together limit the travel of the flexible member 300 along the axial movement of the rod 200, which is conducive to simplifying the structure of the bolt 10 and reducing the manufacturing cost of the bolt 10. In addition, the flexible member 300 is arranged on the non-thread segment 230, and the resistance of the flexible member 300 to the movement of the rod 200 is smaller, which can reduce the resistance when installing and removing the bolt 10. Since the thread on the rod 200 is used as a limiting structure, the bolt 10 can be applied to most installation holes 21.

[0125] Please refer to Figure 7 and Figure 8 , Figure 7 This is a schematic structural diagram of a bolt 10 provided in some embodiments of the present application. Figure 8 The cross-sectional view of the bolt 10 connected to the target part 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 used to cooperate 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 from the outer circumference of the non-threaded section 230 along the radial direction of the rod 200.

[0126] exist Figure 7 and Figure 8 In the illustrated embodiment, the first limiting portion 410 and the second limiting portion 420 both protrude from the outer circumference of the non-threaded section 230 in 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.

[0127] Figure 7 and Figure 8 The embodiment shown can also be applicable 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 at 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 of the stepped hole and be connected to the threaded hole 31.

[0128] The first limiting portion 410 and the second limiting portion 420 both protrude from the outer circumference of the non-threaded section 230 along the radial direction of 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. In addition, the flexible member 300 is arranged on the non-threaded section 230, and the resistance of the flexible member 300 to the movement of the rod 200 is smaller, which can reduce the resistance when installing and removing the bolt 10.

[0129] Please refer to Figure 3 , Figure 6 and Figure 8 In some embodiments, the height of the first limiting portion 410 protruding from the outer circumferential surface of the rod portion 200 along the radial direction of the rod portion 200 is H, and the diameter of the rod portion 200 is D, which satisfies: 0.03≤H / D≤0.1.

[0130] H represents the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 along the radial direction of the rod 200. Figure 3 In the embodiment where the first stopper 410 includes a convex portion 411, H is the distance between the surface of the convex portion 411 which is farthest from the outer peripheral surface of the rod portion 200 along the radial direction of the rod portion 200 and the outer peripheral surface of the rod portion 200. Figure 6 In an embodiment where the first limiting portion 410 is a thread on the first thread segment 240, H is half of the difference between the major diameter of the thread and the minor diameter of the thread.

[0131] 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.

[0132] H / D represents the ratio of the height of the first limiting portion 410 protruding from the outer circumferential surface of the rod portion 200 along the radial direction of the rod portion 200 to the diameter of the rod portion 200 .

[0133] The ratio of the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 along 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.

[0134] When H / D≥0.03, the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 along the radial direction of the rod 200 is relatively large, and has 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 along the radial direction of the rod 200 is not too large, and the first limiting portion 410 is not easy to interfere with the wall of the mounting hole 21, making it easier for the rod 200 to penetrate into the mounting hole 21. When 0.03≤H / D≤0.1, the first limiting portion 410 can have a better limiting effect, and the risk of the first limiting portion 410 interfering with the wall of the mounting hole 21 can be reduced.

[0135] Optionally, 0.05≤H / D≤0.08.

[0136] The ratio of the height of the first limiting portion 410 protruding from the outer circumference of the rod 200 along 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.

[0137] When H / D≥0.05, the first limiter 410 has a better limiting effect. When H / D≤0.08, the first limiter 410 is less likely to interfere with the wall of the mounting hole 21, making it easier for the rod 200 to penetrate into the mounting hole 21. When 0.05≤H / D≤0.08, the first limiter 410 can have a better limiting effect and the risk of interference between the first limiter 410 and the wall of the mounting hole 21 can be further reduced.

[0138] Please refer to Figure 3 , Figure 6 and Figure 8 In some embodiments, the stroke of the flexible member 300 is L1, and the length of the rod 200 is L2, satisfying: 0.1≤L1 / L2≤0.7.

[0139] L1 represents the stroke of the flexible member 300, that is, the distance that the flexible member 300 can move between the first limit portion 410 and the second limit portion 420, that is, the minimum distance between the first limit portion 410 and the second limit portion 420 along the axial direction of the rod 200. Figure 3 In the embodiment where the second limiting portion 420 is the 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. Figure 6 In an embodiment where the first limiting portion 410 is a thread disposed on the first thread segment 240 and the second limiting portion 420 is a thread disposed on the second thread segment 250 , L1 is a minimum distance between the first thread segment 240 and the second thread segment 250 .

[0140] L2 represents the length of the rod 200, that is, the distance between the surface of the rod 200 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 in the receiving groove 111.

[0141] L1 / L2 represents the ratio of the stroke of the flexible member 300 to the length of the rod 200 .

[0142] 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.

[0143] When L1 / L2≥0.1, the stroke of the flexible member 300 is relatively large, the flexible member 300 can be interference fit 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 engagement or separation with the threaded hole 31. When L1 / L2≤0.7, the stroke of the flexible member 300 is not too large, so that there is enough 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, so that the flexible member 300 can be engaged with or separated from the threaded hole 31 while maintaining engagement with the mounting hole 21, and the bolt 10 can have sufficient connection strength after threading with the threaded hole 31.

[0144] Optionally, 0.3≤L1 / L2≤0.5.

[0145] 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.

[0146] When L1 / L2≥0.3, the travel of the flexible member 300 is larger, so that the flexible member 300 does not need to be separated from the mounting hole 21 to achieve the matching or separation of the bolt 10 and the threaded hole 31. When L1 / L2≤0.5, the bolt 10 and the threaded hole 31 have better connection strength after threading. When 0.3≤L1 / L2≤0.5, the flexible member 300 does not need to be separated from the mounting hole 21 to achieve the matching or separation of the bolt 10 and the threaded hole 31, and the bolt 10 and the threaded hole 31 have higher connection strength after threading.

[0147] Please refer to Figure 7 and Figure 8In some embodiments, the flexible member 300 is a flexible sleeve sleeved on the rod 200. Along the axial direction of the rod 200, the outer circumferential surface of the rod 200 between the first limiting portion 410 and the second limiting portion 420 is a cylindrical surface.

[0148] 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 bare rod.

[0149] Along the axial direction of the rod 200 , the diameters of the rod 200 at various positions between the first limiting portion 410 and the second limiting portion 420 are the same.

[0150] The outer circumferential surface of the rod 200 between the first limiting portion 410 and the second limiting portion 420 is a cylindrical surface, which is relatively smooth, so that the resistance of the flexible member 300 to the movement of the rod 200 is smaller, which can reduce the resistance when installing and removing the bolt 10.

[0151] Please refer to Fig. 9 , Fig. 9 Schematic diagram of the structure of the bolt 10 provided in some other embodiments of the present application. In some other embodiments, the flexible member 300 is a flexible sleeve sleeved on the rod 200. The rod 200 includes a first end 210 and a second end, and the second end is 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 limiting portion 410 and the second limiting portion 420 gradually increases from the first end 210 to the second end.

[0152] Along the axial direction of the rod 200 , the rod 200 includes a first end 210 and a second end opposite to each other, wherein the first end 210 is far away from the head 100 , and the second end is connected to the head 100 .

[0153] The flexible member 300 is sleeved on the rod portion 200 and is located between the first limiting portion 410 and the second limiting portion 420 .

[0154] Along the axial direction of the rod portion 200, the diameter of the portion of the rod portion 200 located between the first limit portion 410 and the second limit portion 420 gradually increases from the first end 210 to the second end, that is, the diameter of the portion of the rod portion 200 located between the first limit portion 410 and the second limit portion 420 gradually decreases from the second end to the first end 210.

[0155] 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 member 300 will gradually have an interference fit with the mounting hole 21, making the fit between the flexible member 300 and the mounting hole 21 more secure.

[0156] Please refer to Fig.10 and Fig.11 , Fig.10 This is a schematic structural diagram of a bolt 10 provided in some other embodiments of the present application. Fig.11 The cross-sectional view of the bolt 10 connected to the target part provided in some other embodiments of the present application. In some other embodiments, the limiting structure is a limiting groove 430 provided on the outer peripheral surface of the rod 200. Along the axial direction of the rod 200, the width of the limiting groove 430 is greater than the width of the flexible member 300.

[0157] The limiting structure is a limiting groove 430 , and the limiting groove 430 can be formed by milling or turning.

[0158] 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 .

[0159] A limiting groove 430 is provided on the outer circumferential 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 travel of the flexible member 300 .

[0160] Please refer to Fig.10 and Fig.11 In some embodiments, along the axial direction of the rod 200 , the limiting groove 430 extends to the head 100 .

[0161] 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 .

[0162] The limiting groove 430 extends to the head 100, and the side wall of the limiting groove 430 away from the head 100 along the axial direction of the rod 200 and the head 100 together limit the flexible member 300. 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.

[0163] Please refer to Fig.12 , Fig.12 The schematic diagram of the structure of the bolt 10 provided in some other embodiments of the present application is as follows: Along the axial direction of the rod 200 , there is a gap between the limiting groove 430 and the head 100 .

[0164] There is a gap between the limiting groove 430 and the head 100 , so the two side walls of the limiting groove 430 that are opposite to each other along the axial direction of the rod 200 jointly limit the flexible member 300 , which is simple and convenient.

[0165] Please refer 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 portion 200 .

[0166] The flexible member 300 is a flexible sleeve, and the flexible sleeve is sleeved on the rod 200, so that the relative movement of the flexible member 300 and the rod 200 is more convenient. In addition, since the flexible member 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 easy to be skewed. In addition, the flexible member 300 is sleeved on the rod 200, and the flexible member 300 can only move along the axial direction of the rod 200, and the rod 200 can play a guiding role for the flexible member 300. The limiting groove 430 is set as an annular groove. When the groove wall of the annular groove limits the flexible member 300, the external force on the flexible member 300 is more uniform, and the flexible sleeve is not easy to be damaged, which is beneficial to prolonging the life of the bolt 10 and facilitating the recycling of the bolt 10.

[0167] Please refer to Fig.13 , Fig.13 The schematic diagram of the structure of the bolt 10 provided in some other embodiments of the present application. In some other embodiments, the rod 200 has a first end 210 and a second end, and the second end is connected to the head 100. 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.

[0168] “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.

[0169] 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 have an interference fit with the mounting hole 21, making the fit between the flexible member 300 and the mounting hole 21 more secure.

[0170] In some embodiments, the diameter of the area 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.

[0171] 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.

[0172] 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.

[0173] When D1 / D≥0.5, the diameter of the area of ​​the rod 200 corresponding to the limiting groove 430 is not too small, so that the area of ​​the rod 200 corresponding to the limiting groove 430 has a higher strength. When D1 / D≤0.9, the limiting groove 430 has a greater depth, and the limiting effect on the flexible member 300 is better. When 0.5≤D1 / D≤0.9, the strength of the rod 200 and the limiting effect on the flexible member 300 can be taken into account.

[0174] Optionally, 0.6≤D1 / D≤0.8.

[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=0.6, 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.

[0176] When D1 / D≥0.6, the diameter of the area of ​​the rod 200 corresponding to the limiting groove 430 is larger, so that the area of ​​the rod 200 corresponding to the limiting groove 430 has a higher strength. When D1 / D≤0.8, the limiting groove 430 has a greater depth, and the limiting effect on the flexible member 300 is better. When 0.6≤D1 / D≤0.8, the strength of the rod 200 and the limiting effect on the flexible member 300 can be better taken into account.

[0177] Please refer to Fig.13 In some embodiments, the flexible member 300 is a flexible sleeve that is sleeved on the rod 200 .

[0178] The flexible member 300 is a flexible sleeve, which is sleeved on the rod 200, so that the flexible member 300 and the rod 200 can move relative to each other more conveniently. In addition, since the flexible member 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 prone to skew. In addition, the flexible member 300 is sleeved on the rod 200, and the flexible member 300 can only move along the axial direction of the rod 200, and the rod 200 can guide the flexible member 300.

[0179] In some embodiments, the flexible member 300 is made of plastic or rubber.

[0180] The plastic material and the rubber material can stably abut against the hole wall of the mounting hole 21 to achieve an interference fit with the mounting hole 21. In addition, the cost of the plastic material and the rubber material is relatively low, which is convenient for reducing the cost of the bolt 10. Furthermore, the wear resistance of the plastic material and the rubber material is good, which can increase the life of the bolt 10 and facilitate the recycling of the bolt 10.

[0181] Please refer to Fig.14 , Fig.14 The present application also provides a schematic diagram of the structure of the bolt 10 in some embodiments. In other embodiments, a clamping block is provided on the flexible member 300, a limiting groove 430 is provided on the outer circumference of the rod 200, a clamping groove is provided on the side wall of the limiting groove 430, and the clamping block is clamped with the clamping groove to form a sliding fit.

[0182] Please refer to Fig.15 , Fig.15 A schematic diagram 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, the rod 200 is passed through the mounting hole 21, and is threadedly matched 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 is pressed against the hole wall of the mounting hole 21.

[0183] An embodiment of the present application further provides a battery, which includes the above-mentioned locking structure.

[0184] According to some embodiments of this application, please refer to Figures 1 to 10 .

[0185] The 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 into 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 surface of the mounting hole 21.

[0186] The rod 200 of the bolt 10 is provided with a flexible member 300, and the flexible member 300 at least partially protrudes from the outer peripheral surface of the rod 200 along the radial direction of the rod 200. When installing or removing the bolt 10, the flexible member 300 can be deformed so as to press against the hole wall of the mounting hole 21, and form an interference fit with the mounting hole 21. Since the flexible member 300 is provided on the rod 200 and has an interference fit with the mounting hole 21, when installing or removing the bolt 10, the bolt 10 is not easy to be separated from the mounting hole 21 and is not easy to fall off, so that it is convenient to quickly install and remove the bolt 10, which is conducive to improving the locking efficiency.

[0187] The flexible member 300 is movably disposed on the rod 200 along the axial direction of the rod 200. By movably disposing 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 or separation with the threaded hole 31, so that not only can the bolt 10 be retained on the target part and the risk of the threaded hole 31 falling off is reduced, but also the resistance during the installation and removal of the bolt 10 can be reduced.

[0188] The bolt 10 includes a limiting structure, which is used to limit the stroke of the flexible member 300 moving along the axial direction of 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 stroke of the flexible member 300 moving along the axial direction of the rod 200. The first limiting portion 410 and the second limiting portion 420 are provided to jointly limit the stroke of the flexible member 300 moving along the axial direction of 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.

[0189] The first limiting portion 410 protrudes from the outer peripheral surface of the rod 200 along 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, it is only necessary to set the first limiting portion 410 on the rod 200, and the first limiting portion 410 and the head 100 together limit the stroke of the flexible member 300 moving along the axial direction of the rod 200, which is conducive to simplifying the structure of the bolt 10 and reducing the manufacturing cost of the bolt 10.

[0190] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bolt, characterized in that: include: head; A rod portion, used to penetrate into a mounting hole of a target component, wherein the head portion is connected to one end of the rod portion; A flexible member is arranged on the rod portion. Along the radial direction of the rod portion, the flexible member at least partially protrudes from the outer peripheral surface of the rod portion. The flexible member is used to cooperate with the mounting hole and press against the hole wall surface of the mounting hole.

2. The bolt according to claim 1, characterized in that: The flexible member is movably disposed on the rod portion along the axial direction of the rod portion.

3. The bolt according to claim 2, characterized in that: The bolt comprises a limiting structure, and the limiting structure is used to limit the travel of the flexible member along the axial movement of the rod.

4. The bolt according to claim 3, characterized in that: The limiting structure includes a first limiting portion and a second limiting portion. Along the axial direction of the rod, the flexible member 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 member along the rod.

5. The bolt according to claim 4, characterized in that: 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 portion.

6. The bolt according to claim 5, characterized in that: Along the axial direction of the rod, the head has an end surface facing the rod, and the end surface is provided with a receiving groove, and the receiving groove is used to receive a part of the flexible member so that at least part of the flexible member protrudes from the end surface.

7. The bolt according to claim 5, characterized in that: 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.

8. The bolt according to claim 5, characterized in that: The rod portion includes a threaded section and a non-threaded section, the threaded section is used for matching 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.

9. The bolt according to claim 4, characterized in that: 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, 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 arranged on the first threaded segment, and the second limiting portion is a thread arranged on the second threaded segment.

10. The bolt according to claim 4, characterized in that: 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 circumferential surface of the non-threaded section along the radial direction of the rod portion.

11. The bolt according to any one of claims 5 to 10, characterized in that: The height of the first limiting portion protruding from the outer circumferential surface of the rod portion in the radial direction of the rod portion is H, and the diameter of the rod portion is D, which satisfies: 0.03≤H / D≤0.

1.

12. The bolt according to claim 11, characterized in that: 0.05≤H / D≤0.

08.

13. The bolt according to any one of claims 4 to 10, characterized in that: The stroke of the flexible member is L1, and the length of the rod is L2, which satisfies: 0.1≤L1 / L2≤0.

7.

14. The bolt according to claim 13, characterized in that: 0.3≤L1 / L2≤0.

5.

15. The bolt according to any one of claims 4 to 10, characterized in that: The flexible member is a flexible sleeve sleeved on the rod portion, and along the axial direction of the rod portion, a portion of the outer circumferential 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 to 10, characterized in that: 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 portion; Along the axial direction of the rod portion, a diameter of a 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.

17. The bolt according to claim 3, characterized in that: 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.

18. The bolt according to claim 17, characterized in that: Along the axial direction of the rod portion, the limiting groove extends to the head portion.

19. The bolt according to claim 17, characterized in that: Along the axial direction of 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 to 19, characterized in that: The limiting groove is an annular groove, and the flexible member is a flexible sleeve sleeved on the rod.

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

22. The bolt according to claim 21, characterized in that: The diameter of the area of ​​the rod portion corresponding to the limiting groove is D1, and the diameter of the rod portion is D, which satisfies: 0.5≤D1 / D≤0.

9.

23. The bolt according to claim 22, characterized in that: 0.6≤D1 / D≤0.

8.

24. The bolt according to any one of claims 1-10, 17-19, characterized in that: The flexible member is a flexible sleeve sleeved on the rod.

25. The bolt according to any one of claims 1-10, 17-19, characterized in that: The flexible member is made of plastic or rubber.

26. A locking structure, characterized in that: It includes a first target part, a second target part and a bolt according to any one of claims 1-25, 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 matched 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 of the mounting hole.

27. A battery, characterized in that: Comprising the locking structure according to claim 26.

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