CN213064251U

CN213064251U - Bolt for movable connection

Info

Publication number: CN213064251U
Application number: CN202021370563.7U
Authority: CN
Inventors: 黄子源
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-04-27
Anticipated expiration: 2030-07-13

Abstract

The utility model relates to the technical field of bolts, in particular to a bolt for movable connection, which comprises a bolt body made of metal, one end of the bolt body is provided with a limit boss for limiting the axial position of the end part of the bolt body at the side, the other end of the bolt body is provided with a thread, the thread is provided with a nut, a cylindrical connecting part of the bolt body is arranged between the limit boss and the thread, the end part of the connecting part connected with the thread is provided with a limit plate for controlling the axial fit clearance of the connecting part, the corresponding part on the connecting part is provided with a connecting structure for matching the limit plate, the width of the connecting structure is not more than the thickness of the limit plate, the connecting part is sleeved with a connecting sleeve made of high-strength plastic, the inner side of the limit boss is provided with a positioning boss, the surface of the positioning boss is provided with a positioning structure, the connection performance is reliable, and the service life is longer.

Description

Bolt for movable connection

Technical Field

The utility model relates to a bolt technical field, concretely relates to a bolt for swing joint.

Background

An articulating connection is a connection where one component part can remain in relative motion after being connected to another component part. The movable connection can be realized by connecting shafts, hinging connection, hinge connection and the like. All there is the inconvenient drawback of connection operation among the foretell connected mode, for example, the back is connected to the connecting axle, need carry on spacingly to the tip of connecting axle, avoids the connecting axle to deviate from, and the tip of connecting axle is spacing to adopt the pin, and the fixed unreliable of pin comes off easily. For quick connection operation, can adopt the bolt to carry out swing joint, bolt and bolt hole clearance fit, the nut carries out axial spacing, but in the operation of reality, the tightness of being connected of nut and bolt has very big influence to swing joint's effect, nut locking can lead to axial locking force too big, cause the activity of circumference to be effective, the nut does not lock then leads to the nut to drop easily, lead to connecting failure, therefore, need optimize the structure of nut, make and to realize swing joint, so that the operation is convenient for.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to above-mentioned defect, provide a bolt for swing joint, simple structure connects convenient operation, connects the complex precision height, and connection performance is reliable, has longer life.

The utility model provides a technical scheme that its technical problem adopted as follows:

a bolt for movable connection comprises a metallic bolt body, wherein one end of the bolt body is provided with a limit boss for limiting the axial position of the end part at the side of the bolt body, the other end of the bolt body is provided with a thread, a nut is arranged at the thread, a cylindrical connecting part of the bolt body is arranged between the limit boss and the thread, a limit plate for controlling the axial fit clearance of the connecting part is arranged at the end part where the connecting part is connected with the thread, a connecting structure for matching the limit plate is arranged at the corresponding part on the connecting part, the width of the connecting structure is not more than the thickness of the limit plate, a connecting sleeve made of high-strength plastic is sleeved at the connecting part, a positioning boss is arranged at the inner side of the limit boss, the maximum size of the limit boss is larger than that of the positioning boss, and the surface of the positioning boss is provided, the limiting structure which is convenient for circumferential force application to the bolt body is arranged at the end face of the outer side of the limiting boss.

Furthermore, the end face of the inner side of the positioning boss is connected with the connecting part, the positioning boss is prism-shaped, the center line of the positioning boss, the center line of the limiting boss and the axis line of the bolt body are on the same straight line, and the surface of the positioning boss forms the positioning structure.

Furthermore, the limiting boss is in a circular truncated cone shape.

Furthermore, the connection structure be for seting up the connection round platform of the department that corresponds on connecting portion, the axial lead of connecting round platform axial lead and connecting portion is in on the same straight line, and the width of connecting the round platform is less than the thickness of limiting plate, the limiting plate on be equipped with and connect round platform interference fit's connecting hole, set up mode limiting plate pivoted incision parallel slot on the outer peripheral face of connecting the round platform, the structure of connecting hole and the outer peripheral face structure cooperation of connecting the round platform.

Furthermore, the limiting structure is a cross-shaped counter bore arranged on the end face of the limiting boss.

Furthermore, the limiting structure is a linear protrusion arranged on the end face of the limiting boss.

Furthermore, the length of the connecting sleeve is not more than that of the connecting part.

Furthermore, the connecting sleeve is of a step-shaped structure.

Further, the outer diameter of the connecting part is larger than that of the thread.

The utility model has the advantages that: by adopting the scheme, the bolt has better movable connection performance, the use operation is simple and rapid, the connection precision in the axial direction of the bolt is high, better fit clearance can be ensured, the nut only plays a role in preventing the limiting plate from being separated, the axial connection is enhanced, the tightness of the nut does not influence the axial fit precision of the bolt, the bolt keeps better movable performance, the activity is not influenced, the stress on the bolt is small, the bolt deformation is effectively avoided, the service life is prolonged, the structure of the bolt is simple, and the bolt is convenient to manufacture.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a bolt according to an embodiment of the present invention.

Fig. 2 is a schematic view of a fitting structure of a bolt and a nut according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of a bolt according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a limiting boss in an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a bolt body according to another embodiment of the present invention.

Fig. 6 is a schematic cross-sectional structure diagram of a bolt according to another embodiment of the present invention.

Wherein: the bolt comprises a bolt body 1, a limiting boss 11, a thread 12, a connecting part 13, a connecting circular truncated cone 14, a notch flat groove 141, a positioning boss 15, a nut 2, a limiting plate 3, a connecting sleeve 4, a first part 5 and a second part 6.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1: referring to fig. 1-3, a bolt for movable connection, which comprises a metallic bolt body 1, the left end of the bolt body 1 is a truncated cone-shaped limiting boss 11 for limiting the axial position of the side end of the bolt body, the right end of the bolt body 1 is provided with a thread 12, a nut 2 is arranged at the thread 12, a cylindrical connecting part 13 of the bolt body 1 is arranged between the limiting boss 11 and the thread 12, a limiting plate 3 for controlling the fit clearance of the connecting part in the axial direction is arranged at the end part where the connecting part 13 is connected with the thread 12, a connecting truncated cone 14 for matching with the limiting plate 3 is arranged at the corresponding part on the connecting part 13, the width of the connecting truncated cone 14 is equal to the thickness of the limiting plate 3, the axial lead of the connecting truncated cone 14 and the axial lead of the connecting part 13 are on the same straight line, the center of the limiting plate 3 is provided with a connecting hole 31 which is in interference fit with the connecting truncated cone, the structure of the connecting hole 31 is matched with the structure of the outer peripheral surface of the connecting circular truncated cone 14, the number of the cut flat grooves 141 is two, the two cut flat grooves 141 are arranged in parallel, the cut flat grooves 141 effectively prevent the rotation of the limiting plate, so that the limiting plate is kept stable at the connecting platform, the connecting part of the bolt is axially positioned in the connecting and matching way with the sleeve, the inner side of the limiting boss 11 is provided with a hexagonal-prism-shaped positioning boss 15, the inner side end surface of the positioning boss 15 is connected with the left end of the connecting part 13, the outer diameter of the limiting boss 11 is larger than the maximum size of the positioning boss 15, the positioning boss 15 is used for connecting and matching with the first part 5, the corresponding part of the first part 5 is provided with a hexagonal hole matched with the positioning boss 15, the positioning boss 15 is matched with the hexagonal hole, so that the bolt keeps the same motion state with the first part 5, or the static bolt of the first component 5 is kept static synchronously, the inner end face of the limiting boss 11 is in contact with the outer end face of the first component 5 to limit the left end of the bolt axially, the connecting part 13 is used for being movably matched with the second component 6, the second component 6 can be provided with a sleeve which is sleeved on the connecting part 13, so that the connecting area is increased, the stability of the movable fit is improved, the connecting part 13 is sleeved with the connecting sleeve 4 made of high-strength plastic, and the sleeve of the second component 6 is sleeved outside the connecting sleeve 4.

When in use, the bolt is arranged on the first component 5 and the second component 6 in a penetrating way, the positioning boss 15 of the bolt is matched with the hexagonal hole of the first component 5, the connecting part is arranged at the sleeve of the second component 6 in a penetrating way, the thread 12 for connecting the circular truncated cone 14 and the bolt is exposed out of the right side of the sleeve, the limiting plate 3 is circular, the limiting plate 3 is connected at the connecting circular truncated cone 14, and the nut 2 is screwed down, the bolt can realize the movable connection of the first component 5 and the second component 6, after the connection, the first component 5 and the second component 6 can freely rotate, the bolt synchronously rotates along with the rotation of the first component 5, or the bolt synchronously stops along with the first component 5, the rotation of the second component 6 does not influence the bolt, the connecting hole of the limiting plate 3 is matched with the connecting circular truncated cone, the interference fit of the limiting plate and the connecting circular truncated cone can keep the limiting plate immovable on the connecting circular, the bolt is axially limited by matching the connecting part with the sleeve, so that the bolt is stably connected with the second part 6 and the first part 5, the thickness of the limiting plate 3 is equal to that of the connecting round platform, after the limiting plate 3 is installed, the right side of the sleeve is axially limited, the axial matching of the nut connecting part and the sleeve can keep a stable matching gap, the bolt has better precision of movable connection, the movable connection cannot be over-tight or over-loose, the two ends of the bolt are axially limited by the limiting bosses and the limiting plates, the bolt and the sleeve of the second part 6 are well matched by the connecting sleeve in a radial and axial direction, the length of the connecting part is long, the connecting area of the bolt is increased, the strength of the bolt is high, the connecting strength of the bolt in the movable connection of the first part 5 and the second part 6 is effectively ensured, and the connecting reliability is high, the bolt plays a role of a rotating shaft in connection, the bolt has better activity, the axial fit clearance is effectively ensured, the bolt is effectively prevented from loosening, the bolt is prevented from being worn and deformed, the service life is prolonged, the nut is screwed down at the threaded part again, the axial limit is carried out on the outer side of the limiting plate, the reliability of the axial limit is ensured, the stability of the movable connection of the bolt is improved, the outer diameter of the nut is smaller than that of the connecting round platform, the outer diameter of the connecting round platform is smaller than that of the connecting part, the length of the connecting part can be controlled by the length of the notch flat groove, the length of the notch flat groove is consistent with the thickness of the limiting plate, so that the production and the processing are convenient, the limiting of the limiting plate is convenient, the assembly of the limiting plate and the assembly of the nut are convenient, after the limiting plate is assembled in, the right side terminal surface of limiting plate is in the right flank outside of connecting the round platform, the left end face and the limiting plate right side terminal surface contact of nut, the nut is in screwing up, because too big axial fastening force can not be exerted to the axial of bolt to the effect of limiting plate, the axial fit clearance of bolt obtains abundant assurance, this bolt has better result of use, the adapter sleeve is in connecting portion and sleeve room, the adapter sleeve improves the stability of being connected of bolt and second part 6, in the connection, the atress on the bolt transmits on the adapter sleeve, reduce the power on the bolt, and the adapter sleeve can make more even that the atress distributes on the bolt, in swing joint, avoid the distribution inequality of the ascending atress of bolt axial, effectually avoid the bolt bending, warp, the life of extension bolt.

Referring to fig. 4, the limiting structure convenient for circumferential force application to the bolt body is arranged at the end face of the outer side of the limiting boss 11, the limiting structure is a cross-shaped counter bore formed in the end face of the limiting boss 11, the cross-shaped counter bore can effectively rotate until the bolt, or the bolt is screwed, and operation convenience is improved.

Example 2: in this embodiment, the limiting structure is a hexagon socket formed on the end surface of the limiting boss 11.

Example 3: in this embodiment, the positioning boss is quadrangular, a quadrilateral hole matched with the positioning boss 15 is arranged at a corresponding position of the first component 5, and the quadrilateral hole and the surface of the positioning boss form a positioning structure.

Example 4: referring to fig. 5, in this embodiment, the positioning boss is cylindrical, an inner hole is formed at a corresponding position of the first component 5 to match with the positioning boss 15, the positioning structure is formed by forming a plane groove on an outer peripheral surface of the positioning boss, and correspondingly, a hole wall of the inner hole of the first component 5 is formed with a plane structure matched with the plane groove, so that the positioning boss and the first component 5 are positioned in the circumferential direction.

Example 5: in this embodiment, the limiting structure is a linear protrusion formed on the end surface of the limiting boss.

Example 6: referring to fig. 6, in this embodiment, the adapter sleeve is step-like structure, and the figure of adapter sleeve is two, and the one end of adapter sleeve is equipped with the adapter sleeve boss, connects the platform boss and all outwards, and the effect of adapter sleeve boss lies in avoiding sleeve pipe and limiting plate direct contact, avoids direct contact between first part, the second part, avoids producing degree clearance fit to produce and interferes the influence, and the circumference cooperation precision of adapter sleeve has obtained the injecing, makes full play adapter sleeve's effect.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.

Claims

1. A bolt for movable connection comprises a metallic bolt body and is characterized in that, the bolt body's one end be equipped with the spacing boss of restriction bolt body this side tip axial position, the other end of bolt body is equipped with the screw thread, screw thread department is equipped with the nut, be the columniform connecting portion of bolt body between spacing boss and screw thread department, the tip that connecting portion and screw thread department meet is equipped with the limiting plate that control connecting portion are in the ascending fit clearance of axial, the department of correspondence is equipped with the connection structure of cooperation limiting plate on the connecting portion, connecting portion department cover is equipped with the adapter sleeve of high strength plastics matter, spacing boss inboard is equipped with the location boss, the maximum dimension of spacing boss department is greater than the maximum dimension of location boss department, the surface of location boss is equipped with the location structure that makes the bolt body keep unanimous with the motion state of this department's connector, the outside terminal surface department of spacing boss is equipped.

2. The bolt for movable connection according to claim 1, wherein the inner side end surface of the positioning boss is connected with the connecting portion, the positioning boss is prism-shaped, the center line of the positioning boss, the center line of the limiting boss and the axis line of the bolt body are on the same straight line, and the surface of the positioning boss forms the positioning structure.

3. The bolt of claim 1, wherein the stop boss is frustoconical.

4. The bolt according to claim 1, wherein the connecting structure is a connecting circular truncated cone arranged at a corresponding position on the connecting portion, the axis of the connecting circular truncated cone is aligned with the axis of the connecting portion, the limiting plate is provided with a connecting hole in interference fit with the connecting circular truncated cone, the outer circumferential surface of the connecting circular truncated cone is provided with a notch flat groove for preventing the limiting plate from rotating, and the structure of the connecting hole is in structural fit with the outer circumferential surface of the connecting circular truncated cone.

5. The bolt of claim 1, wherein the limiting structure is a cross-shaped counter bore formed in the end face of the limiting boss.

6. The bolt of claim 1, wherein the limiting structure is a linear protrusion formed on an end surface of the limiting boss.

7. A bolt for use in an articulated connection according to claim 1, wherein the length of the connecting sleeve is no greater than the length of the connecting portion.

8. A bolt for use in an articulated connection according to claim 1, characterised in that the connecting sleeve is of stepped configuration.

9. A bolt for an articulated connection according to claim 1, characterized in that the external diameter at the connection is greater than the external diameter at the thread.