Stud bolt structure

Abstract

The utility model relates to a double-end bolt structure which is characterized in that the double-end bolt structure comprises a connecting rod, screw rods are arranged on the two sides of the connecting rod, the screw rods and the connecting rod are integrally arranged, threads are arranged on the peripheries of the screw rods, the periphery of the connecting rod is sleeved with an outer hexagonal meshing sleeve, and the outer hexagonal meshing sleeve is used for being meshed with a wrench. The outer hexagonal meshing sleeve can move in the axial direction of the connecting rod so as to adjust the distance between the head portions of the screw rods on the two sides and the outer hexagonal meshing sleeve. The utility model has the following advantages and effects: the maximum screwing depth of the screw rods on the two sides can be adjusted so as to adapt to more use scenes, and the use range is expanded.

Description

TECHNICAL FIELD

[0001] The utility model relates to double -end bolt technical field, concretely relates to a double -end bolt structure. BACKGROUND

[0002] Double -end bolt is a kind of fastener, its both ends are the screw rod with thread, and middle section is the connecting rod integrally connected with both ends screw rod.Double -end bolt mainly connects two mechanical components, and in order to facilitate driving double -end bolt to rotate, the outer hexagonal engagement sleeve that can be engaged with wrench is fixed on the outer periphery of connecting rod, so as to engage the engagement opening of wrench to the outer periphery of outer hexagonal engagement sleeve, and double -end bolt can be driven to rotate by wrench.

[0003] For example, the Chinese patent technical document with the announcement number CN220365850U discloses a kind of anti-loose double-end bolt, the anti-loose double-end bolt includes bolt head and the first screw rod being arranged on the upper surface of bolt head and the second screw rod being arranged on the lower surface of bolt head, the upper and lower surfaces of the bolt head are also provided with circular anti-loose line.

[0004] In the above technical scheme, by setting anti-loose line on the upper surface of the bolt head of double-end bolt, therefore, after the installation of double-end bolt, the anti-loose line on the upper and lower surfaces of bolt head contacts with the surface of component, increases frictional resistance, thereby reducing the resistance when double-end bolt accidentally rotates, reduces the possibility that double-end bolt appears loose.

[0005] However, in the process of actual use, it is found that since the installation position of outer hexagonal engagement sleeve (bolt head) is fixed, the spacing between the head of two end screw rods and outer hexagonal engagement sleeve is constant, so that the rotation-in depth of two side screw rods is constant, so the problem that one side screw rod is exposed too much or too little after rotation-in often occurs. SUMMARY

[0006] In view of the deficiencies existing in the prior art, the purpose of the utility model is to provide a kind of double-end bolt structure, the maximum rotation-in depth of two side screw rods can be adjusted to adapt to more use scenarios, expand the use range.

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a kind of double-end bolt structure, including connecting rod, the connecting rod both sides are provided with the screw rod integrally arranged with connecting rod, the outer periphery of the screw rod is provided with thread, the outer periphery of the connecting rod is equipped with outer hexagonal engagement sleeve, the outer hexagonal engagement sleeve is used to engage with wrench, the outer hexagonal engagement sleeve can move along the axial direction of connecting rod, to adjust the spacing between the head of two side screw rods and outer hexagonal engagement sleeve respectively.

[0008] The utility model further sets up: the outer periphery of connecting rod is equipped with the guide groove that recesses to radial, the guide groove extends along the axis, the guide groove is multiple and evenly distributes according to the circumference, the inner wall of outer hexagonal engagement sleeve is fixed with guide block, the guide block is multiple and evenly distributes according to the circumference, the guide block corresponds with the guide groove, the guide block can be coupled with the guide groove, and constitute the sliding fit between both.

[0009] The utility model further sets up: the outer periphery of connecting rod is equipped with the limiting component that recesses to radial, the limiting component is used for limiting guide block, avoids the misoperation of outer hexagonal engagement sleeve when spanner and outer hexagonal engagement sleeve engage.

[0010] The utility model further sets up: the limiting component is two symmetrical limiting grooves, the limiting groove sets up in the both sides of guide groove, and with guide groove intercommunication, the limiting groove is rotated and slides in for guide block, the limiting groove is adapted with guide block, can limit guide block in the axial direction after guide block slides in.

[0011] The utility model further sets up: the limiting component is multiple and along the axial direction each other interval setting.

[0012] Compared with prior art, the utility model has the beneficial effects that:

[0013] Since the outer hexagonal engagement sleeve that can move along the connecting rod in the axial direction is sleeved on the outer periphery of the connecting rod in the middle section, by moving the outer hexagonal engagement sleeve, the distance between the screw head on both sides and the outer hexagonal engagement sleeve can be adjusted, so that the depth of the screw on both sides can be adjusted respectively, to adapt to screw grooves of different depths, and further adapt to more use scenarios, and expand the use range. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is whole structure schematic diagram of the utility model;

[0015] Fig. 2 It is sectional structure schematic diagram of the utility model;

[0016] Fig. 3 It is specific structure schematic diagram of outer hexagonal engagement sleeve of the utility model. DETAILED DESCRIPTION

[0017] The technical scheme of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0018] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] As shown in Figs. 1 to 3 The utility model discloses a double -end bolt structure, including connecting rod 1, the both sides of connecting rod 1 are equipped with the screw rod 2 of the integral setting of connecting rod 1, the outer periphery of screw rod 2 is equipped with the thread, when connecting two mechanical components, can pass through with nut cooperation, namely after the nut is spun into screw rod 2 can complete the connection of screw rod 2 with mechanical component on one side, also can pass through the screw rod 2 is spun into the mechanical component with threaded groove, can complete the connection of screw rod 2 with mechanical component,

[0020] In order to facilitate the rotation of the double-end bolt, an outer hexagonal engagement sleeve 3 is sleeved on the outer periphery of the middle connecting rod 1. In this way, by engaging the wrench with the outer hexagonal engagement sleeve 3, the double-end bolt can be driven to rotate by the wrench.

[0021] In this embodiment, the outer hexagonal engagement sleeve 3 can move along the axial direction of the connecting rod 1. In this way, by moving the outer hexagonal engagement sleeve 3, the distance between the head of the screw rod 2 on one side and the outer hexagonal engagement sleeve 3 can be adjusted, so that the depth of the screw rod 2 on the two sides can be adjusted respectively to adapt to threaded grooves of different depths.

[0022] For example, when the depth of the threaded groove is longer than the distance between the head of the screw rod 2 on one side and the outer hexagonal engagement sleeve 3, by moving the outer hexagonal engagement sleeve 3 away from the screw rod 2 on that side, the distance between the head of the screw rod 2 on that side and the outer hexagonal engagement sleeve 3 can be increased, so that the screw rod 2 on that side can be screwed into the groove bottom of the threaded groove to increase the fastening stability. When the depth of the threaded groove is shorter than the distance between the head of the screw rod 2 on one side and the outer hexagonal engagement sleeve 3, by moving the outer hexagonal engagement sleeve 3 towards the screw rod 2 on that side, the distance between the head of the screw rod 2 on that side and the outer hexagonal engagement sleeve 3 can be shortened, so that the excess exposed distance can be reduced, thereby improving the appearance after connection, and further adapting to more use scenarios and expanding the use range.

[0023] In the embodiment, the outer periphery of the connecting rod 1 is further provided with radially recessed guide grooves 4, the guide grooves 4 extend in the axial direction, the guide grooves 4 are multiple and uniformly distributed in the circumferential direction, the inner wall of the outer hexagonal engagement sleeve 3 is fixed with guide blocks 31, the guide blocks 31 are multiple and uniformly distributed in the circumferential direction, the guide blocks 31 correspond to the guide grooves 4, therefore, when the outer hexagonal engagement sleeve 3 is connected to the connecting rod 1, each guide block 31 can be coupled into each corresponding guide groove 4, in this way, during the movement of the outer hexagonal engagement sleeve 3, the guide blocks 31 can slide along the guide grooves 4 to form a sliding fit therebetween, thereby ensuring the stability of the outer hexagonal engagement sleeve 3 during movement.

[0024] In addition, in the embodiment, the outer periphery of the connecting rod 1 is further provided with radially recessed limiting assemblies 5, the limiting assemblies 5 are used for limiting the guide blocks 31, to avoid misoperation of the outer hexagonal engagement sleeve 3 when the wrench is engaged with the outer hexagonal engagement sleeve 3, the limiting assembly 5 is specifically two symmetrically arranged limiting grooves 51, the limiting grooves 51 are arranged on both sides of the guide grooves 4 and communicate with the guide grooves 4, to meet the clockwise and counterclockwise rotation, that is, when rotating clockwise or counterclockwise, there is a corresponding limiting groove 51 matched with the guide block 31, after the outer hexagonal engagement sleeve 3 is moved to the appropriate position, in order to avoid misoperation of the outer hexagonal engagement sleeve 3, the outer hexagonal engagement sleeve 3 can be rotated, so that the guide block 31 can slide into the limiting groove 51, the outer side of the guide block 31 can abut against the limiting groove 51, in this way, the guide block 31 can be axially limited, and when the wrench is engaged with the outer hexagonal engagement sleeve 3 to drive the stud to rotate, the guide block 31 can always abut against the groove bottom of the limiting groove 51, to limit the guide block 31 in the circumferential direction, thereby avoiding relative rotation between the outer hexagonal engagement sleeve 3 and the wrench, and ensuring the stability of the engagement between the outer hexagonal engagement sleeve 3 and the wrench;

[0025] In addition, the limiting assemblies 5 are multiple and arranged axially spaced from each other, in this way, when the outer hexagonal engagement sleeve 3 is moved by different distances, there is a corresponding limiting groove 51 matched with the guide block 31.

[0026] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and those skilled in the art can make modifications without creative contribution according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A double-end bolt structure characterized by comprising: The connecting rod is provided with screw rods on both sides, the screw rods are integrally arranged with the connecting rod, the outer periphery of the screw rods is provided with threads, the outer periphery of the connecting rod is sleeved with an outer hexagonal engaging sleeve, the outer hexagonal engaging sleeve is used for engaging with a wrench, the outer hexagonal engaging sleeve can move along the axial direction of the connecting rod to adjust the distance between the head of each screw rod and the outer hexagonal engaging sleeve.

2. A double-ended bolt structure according to claim 1, wherein The outer periphery of the connecting rod is provided with radially recessed guide grooves, the guide grooves extend along the axial direction, the guide grooves are multiple and uniformly distributed along the circumference, the inner wall of the outer hexagonal engaging sleeve is fixed with guide blocks, the guide blocks are multiple and uniformly distributed along the circumference, the guide blocks correspond to the guide grooves, the guide blocks can be coupled with the guide grooves and form a sliding fit therebetween.

3. A double-ended bolt structure according to claim 2, wherein The outer periphery of the connecting rod is provided with radially recessed limiting components, the limiting components are used for limiting the guide blocks, and the limiting components can prevent the outer hexagonal engaging sleeve from being misoperated when the wrench engages with the outer hexagonal engaging sleeve.

4. A double-ended bolt structure according to claim 3, wherein The limiting components are two symmetrically arranged limiting grooves, the limiting grooves are arranged on both sides of the guide grooves and communicate with the guide grooves, the limiting grooves are used for allowing the guide blocks to slide in, and the limiting grooves are adapted to the guide blocks, so that the guide blocks can be axially limited after being slid in.

5. A double-ended bolt structure according to claim 3 or 4, wherein The limiting components are multiple and arranged at intervals along the axial direction.

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