Connecting piece and assembling structure

Abstract

The utility model discloses a connecting piece and an assembling structure, the connecting piece comprises a bolt body and a nut assembly, the bolt body is provided with a stud and a nut connected with the stud, the nut assembly comprises a first nut, a second nut and a locking nut, and the first nut, the second nut and the locking nut are all in threaded connection with the stud; the locking nut is located between the first nut and the second nut. An included angle is formed between the normal of the end faces of the two sides, in the thickness direction, of the locking nut and the extending direction of the stud, in the process that the first nut and the second nut approach each other oppositely, the locking nut can be extruded, the end face of the locking nut is made to be perpendicular to the stud, external threads of the stud deform, and the locking nut is locked on the stud. And the locking nut cannot rotate around the stud to change the position, so that the effect of locking the locking nut on the stud is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of connection and assembly, in particular to a connecting piece and an assembly structure. Background Art

[0002] The existing assembly structure usually includes a first structure, a second structure and a connecting piece. The first structure and the second structure have through holes, and the connecting piece includes a bolt and a nut. The stud of the bolt passes through the through holes on the first structure and the second structure, the nut of the bolt is limited to the first structure, and the nut is threadedly connected to the stud of the bolt and limited to the second structure. The nut and the nut cooperate to clamp and fix the first structure and the second structure. However, under the action of external force, the nut may be twisted, causing the nut to rotate around the screw, resulting in the first structure and the second structure failing to be tightened, or even causing the connection structure of the first structure and the second structure to fail.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] In order to solve one of the above technical problems, the utility model provides a connecting piece and an assembly structure.

[0005] This application provides the following technical solutions:

[0006] The first object of the present application is to provide a connecting piece, comprising:

[0007] A bolt body, wherein the bolt body has a stud and a nut connected to the stud;

[0008] A nut assembly, the nut assembly comprising a first nut, a second nut and a locking nut, the first nut, the second nut and the locking nut are all threadedly connected to the stud, and the locking nut is located between the first nut and the second nut;

[0009] Among them, the normal lines of the end faces on both sides of the locking nut along the thickness direction and the extension direction of the stud have an angle. In the process of the first nut and the second nut approaching each other, the locking nut can be squeezed so that the end face of the locking nut is perpendicular to the stud, the external thread of the stud is deformed, and the locking nut is locked on the stud.

[0010] Optionally, the locking nut is thinner than the first nut and the second nut.

[0011] Optionally, a plurality of first strip grooves are provided on the stud, each of the first strip grooves is arranged in sequence and spaced apart along the circumference of the stud, each of the first strip grooves extends along the length direction of the bolt, and each of the first strip grooves divides the thread on the stud into a plurality of arc segments.

[0012] Optionally, in the process of the first nut and the second nut approaching each other and squeezing the locking nut, the internal thread of the locking nut can be embedded in the first strip groove, and the arc segment restricts the locking nut from rotating around the stud.

[0013] Optionally, a plurality of second strip grooves are arranged on the thread groove of the locking nut, and each of the second strip grooves is arranged in sequence and spaced apart along the circumference of the locking nut, and each of the second strip grooves extends along the thickness direction of the locking nut, and each of the second strip grooves divides the thread on the thread groove of the locking nut into a plurality of arc segments.

[0014] Optionally, the first nut is located on a side of the second nut close to the nut, and a first helical gear ring is provided on a side of the first nut away from the nut;

[0015] A second bevel gear ring is provided on a side of the locking nut facing the first nut, and the inclination directions of the convex teeth of the first bevel gear ring and the second bevel gear ring are opposite. When the first bevel gear ring and the second bevel gear ring are meshed, the first bevel gear ring limits the locking nut from rotating around the rotation direction of the disengagement stud.

[0016] Optionally, a third helical gear ring is provided on a side of the second nut facing the locking nut;

[0017] A fourth bevel gear ring is provided on a side of the locking nut facing the second nut, and the convex teeth of the third bevel gear ring and the fourth bevel gear ring are inclined in opposite directions. When the third bevel gear ring and the fourth bevel gear ring are meshed, the fourth bevel gear ring limits the second nut from rotating around the rotation direction of the disengagement stud.

[0018] Optionally, a fifth helical gear ring is provided on a side of the nut facing the stud.

[0019] The second object of the present application is to provide an assembly structure, comprising:

[0020] A first structure body and a second structure body, wherein the first structure body and the second structure body both have a through groove;

[0021] The above-mentioned connecting piece, the stud of the connecting piece passes through the through grooves of the first structure and the second structure, the nut is located on the side of the first structure away from the second structure, and the nut assembly is located on the side of the second structure away from the first structure.

[0022] Optionally, a positioning and matching groove connected to the through groove is provided on the first structure, and the nut is partially embedded in the positioning and matching groove, and the positioning and matching groove limits the rotation of the nut relative to the first structure.

[0023] By adopting the above technical solution, the present application has the following beneficial effects:

[0024] When the first nut and the second nut are approaching each other, the connecting piece of the present application can squeeze the locking nut so that the end face of the locking nut is perpendicular to the stud, the external thread of the stud is deformed, the internal thread of the locking nut is also deformed, and the locking nut can no longer rotate around the stud, thereby achieving the effect of locking the locking nut to the stud. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are part of this application and are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation of the utility model. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A structural schematic diagram of a first assembly structure provided by an embodiment of the utility model;

[0027] Figure 2 for Figure 1 Exploded diagram of

[0028] Figure 3 for Figure 2 A top-down perspective view of

[0029] Figure 4 A schematic diagram of the three-dimensional structure of a locking nut of a first assembly structure provided by an embodiment of the utility model;

[0030] Figure 5 A structural schematic diagram of a second assembly structure provided by an embodiment of the utility model;

[0031] Figure 6 for Figure 5 An upward perspective view.

[0032] In the figure: 1, bolt body; 11, stud; 111, first strip groove; 12, nut; 121, fifth oblique gear ring; 2, first nut; 21, first oblique gear ring; 22, eighth oblique gear ring; 3, second nut; 31, third oblique gear ring; 4, locking nut; 41, second strip groove; 42, second oblique gear ring; 43, fourth oblique gear ring; 5, gasket; 51, protrusion; 52, seventh oblique gear ring; 6, first structure; 61, positioning matching groove; 62, sixth oblique gear ring; 7, second structure; 71, positioning groove. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiment 1

[0037] See also Figures 1 to 4 As shown, an embodiment of the present application provides a connecting piece, including: a bolt body 1 and a nut assembly, the bolt body 1 having a stud 11 and a nut 12 connected to the stud 11, the nut assembly comprising a first nut 2, a second nut 3 and a locking nut 4, the first nut 2, the second nut 3 and the locking nut 4 are all threadedly connected to the stud 11, and the locking nut 4 is located between the first nut 2 and the second nut 3, wherein the normal of the end faces on both sides of the locking nut 4 along the thickness direction and the extension direction of the stud 11 have an angle, and in the process of the first nut 2 and the second nut 3 approaching each other, the locking nut 4 can be squeezed so that the end face of the locking nut 4 is perpendicular to the stud 11, the external thread of the stud 11 is deformed, and the locking nut 4 is locked on the stud 11.

[0038] In the process of the first nut 2 and the second nut 3 approaching each other along the stud 11, the connecting piece of the present application can squeeze the locking nut 4 so that the end face of the locking nut 4 is perpendicular to the stud 11, the external thread of the stud 11 is deformed, the internal thread of the locking nut 4 is also deformed, and the locking nut 4 can no longer rotate around the stud 11, thereby achieving the effect of locking the locking nut 4 to the stud 11. The connecting piece of the present application can be permanently fastened to the structure without detaching from the structure.

[0039] In some possible implementations, the thickness of the locking nut 4 is smaller than that of the first nut 2 and the second nut 3. The locking nut 4 can be a sheet, similar to a gasket. Thus, under the action of the first nut 2 and the second nut 3, it can be gradually deformed. In the present application, the extension direction of the internal thread groove of the locking nut 4 and the normal of the plane where the locking nut 4 is located have an angle, and the angle can be greater than zero and less than 35 degrees.

[0040] In some possible implementations, the stud 11 is provided with a plurality of first strip grooves 111, each of which is arranged in sequence and spaced apart along the circumference of the stud 11, each of which extends along the length direction of the bolt, and each of which divides the thread on the stud 11 into a plurality of arc segments. Each arc segment is relatively short, and the external thread on the stud 11 is relatively easy to deform during the process of the locking nut 4 being flattened.

[0041] In some possible embodiments, when the first nut 2 and the second nut 3 are pressed toward each other to squeeze the locking nut 4, the internal thread of the locking nut 4 can be embedded in the first strip groove 111, and the arc segment limits the locking nut 4 from rotating around the stud 11.

[0042] When the convex teeth of the internal thread of the locking nut 4 are embedded in the first strip groove 111, the locking nut 4 and the stud 11 are limited in the rotation direction. Due to the limitation of the arc segment in the circumferential direction of the stud 11, the locking nut 4 will not rotate around the stud 11 when subjected to external force.

[0043] In some possible implementations, a plurality of second strip grooves 41 are provided on the thread groove of the locking nut 4, each of the second strip grooves 41 is sequentially spaced along the circumference of the locking nut 4, each of the second strip grooves 41 extends along the thickness direction of the locking nut 4, and each of the second strip grooves 41 divides the thread on the thread groove of the locking nut 4 into a plurality of arc segments. The internal thread of the locking nut 4 is also divided into a plurality of arc segments, which is also easy to deform, and it is easy for the external thread on the stud 11 to be embedded in the gap between the arc segments on the locking nut 4, that is, in the second strip groove 41.

[0044] In some possible implementations, the first nut 2 is located on the side of the second nut 3 close to the nut 12, a first oblique toothed ring 21 is provided on the side of the first nut 2 facing away from the nut 12, a second oblique toothed ring 42 is provided on the side of the locking nut 4 facing the first nut 2, the convex teeth of the first oblique toothed ring 21 and the second oblique toothed ring 42 are inclined in opposite directions, and screwing the locking nut 4 can make the locking nut 4 gradually approach the first nut 2 until the first oblique toothed ring 21 and the second oblique toothed ring 42 are engaged. When the first oblique toothed ring 21 and the second oblique toothed ring 42 are engaged, the first oblique toothed ring 21 limits the reverse rotation of the locking nut 4, that is, limits the locking nut 4 from rotating around the rotation direction of the disengagement stud 11, and the locking nut 4 is subject to a dual limiting effect, one is the limiting effect of the external thread on the stud 11, and the other is the limiting effect of the first nut 2, so that the locking nut 4 fastener is on the stud 11, and will not translate along the stud 11.

[0045] In some possible embodiments, a third bevel gear ring 31 is provided on the side of the second nut 3 facing the locking nut 4, and a fourth bevel gear ring 43 is provided on the side of the locking nut 4 facing the second nut 3, and the inclination directions of the convex teeth of the third bevel gear ring 31 and the fourth bevel gear ring 43 are opposite, and when the third bevel gear ring 31 and the fourth bevel gear ring 43 are engaged, the fourth bevel gear ring 43 limits the rotation of the second nut 3 around the rotation direction of the disengagement stud 11.

[0046] In this embodiment, the first nut 2 is first screwed in so that the first nut 2 abuts against the structure, and then the locking nut 4 is screwed in so that the locking nut 4 abuts against the first nut 2. Finally, the second nut 3 is screwed in so that the second nut 3 abuts against the locking nut 4. The second nut 3 is kept screwed in until the first nut 2 and the second nut 3 flatten the inclined locking nut 4. At this time, the third bevel gear ring 31 and the fourth bevel gear ring 43 are meshed, and the fourth bevel gear ring 43 restricts the second nut 3 from rotating in the opposite direction, so that the second nut 3 will not detach from the stud 11.

[0047] In some possible implementations, see Figure 2 and Figure 3 As shown, a fifth helical toothed ring 121 is provided on the side of the nut 12 facing the stud 11. A positioning matching groove 61 may be provided on the structure, and a sixth helical toothed ring 62 may be provided on the bottom wall of the positioning matching groove 61. When the nut 12 is embedded in the positioning matching groove 61, the sixth helical toothed ring 62 is meshed with the fifth helical toothed ring 121, and the sixth helical toothed ring 62 restricts the bolt from rotating relative to the structure.

[0048] The cross section of the positioning matching groove 61 can be polygonal, and the nut 12 is also polygonal. The nut 12 can be embedded in the positioning matching groove 61. The positioning matching groove 61 and the nut 12 are limited to limit the rotation of the nut 12 relative to the structure.

[0049] The embodiment of the present application also provides an assembly structure, including: a first structure 6, a second structure 7 and the above-mentioned connecting piece. The first structure 6 and the second structure 7 both have through grooves, and the stud 11 of the connecting piece passes through the through grooves of the first structure 6 and the second structure 7, the nut 12 is located on the side of the first structure 6 away from the second structure 7, and the nut assembly is located on the side of the second structure 7 away from the first structure 6, so that the connecting piece is fastened to the structure without being separated from the structure.

[0050] In some possible implementation schemes, a positioning matching groove 61 connected to the through groove is provided on the first structure 6 , and the nut 12 is partially embedded in the positioning matching groove 61 , and the positioning matching groove 61 limits the rotation of the nut 12 relative to the first structure 6 .

[0051] Embodiment 2

[0052] See also Figure 5 and Figure 6 As shown, an embodiment of the present application provides a connecting piece, including: a bolt body 1, a washer 5 and a nut assembly. The bolt body 1 has a stud 11 and a nut 12 connected to the stud 11, the washer 5 is sleeved on the stud 11, the washer 5 is provided with a first positioning fitting portion on a side of the washer 5 facing the nut 12, and a second positioning fitting portion is provided on a side of the washer 5 away from the nut, the first positioning fitting portion is used to limit the position of the structure penetrated by the stud 11 to limit the rotation of the washer 5 relative to the structure, the nut assembly is threadedly connected to the stud 11, the nut assembly is located on the side of the washer 5 away from the nut 12, and the second positioning fitting portion is used to positionally fit with the nut assembly to limit the rotation of the nut assembly around the rotation direction of the stud 11.

[0053] In the embodiment of the present application, a gasket is provided on the basis of the first embodiment. The gasket 5 can respectively cooperate with the structure and the nut assembly to limit the position, so that the nut assembly will not rotate relative to the structure, the nut assembly will not separate from the bolt body 1, and the overall assembly structure has good stability.

[0054] In some possible implementations, the first positioning and fitting portion includes a plurality of protrusions 51 disposed on the gasket 5 , and when the gasket 5 is attached to the structure, each protrusion 51 is respectively embedded in a positioning groove 71 on the structure.

[0055] The protrusion 51 is embedded in the positioning groove 71 . Restricted by the positioning groove 71 , the gasket 5 cannot rotate. The position of the gasket 5 is fixed, so that the nut assembly that is limitedly matched with the gasket 5 cannot rotate.

[0056] In some possible implementations, the protrusion 51 has a smooth upper convex arc surface. The positioning groove 71 is provided with a smooth inner concave surface. After the protrusion 51 is embedded in the positioning groove 71, the upper convex arc surface of the protrusion 51 can smoothly fit with the concave surface of the positioning groove 71. By providing the protrusion 51 and the positioning groove 71 with smooth surface structures, the protrusion 51 can be more easily and smoothly embedded in the positioning groove 71.

[0057] In some possible implementations, the second positioning and fitting portion includes a seventh beveled tooth ring 52 disposed on the gasket 5, and an eighth beveled tooth ring 22 is disposed on the side of the nut assembly facing the gasket 5. When the nut assembly and the gasket 5 are in contact, the seventh beveled tooth ring 52 and the eighth beveled tooth ring 22 are meshed, and the seventh beveled tooth ring 52 limits the rotation of the nut assembly around the rotation direction of the stud 11. When assembling the connector on a structure, firstly pass the stud 11 of the bolt body 1 through the two structures, and then sleeve the gasket 5 on the stud 11, so that the gasket 5 moves along the stud 11, and the gasket 5 and the nut 12 are respectively limited on both sides of the structure in the thickness direction, and then the nut assembly is threadedly connected to the stud 11, and the nut assembly is rotated so that the nut assembly abuts against the gasket 5. The gasket 5 and the structure are limitedly matched and cannot rotate. The seventh oblique tooth ring 52 on the gasket 5 is meshed with the eighth oblique tooth ring 22 of the nut assembly. The seventh oblique tooth ring 52 limits the reverse rotation of the nut assembly, and the nut assembly will not detach from the stud 11.

[0058] The embodiment of the present application also provides an assembly structure, including: a first structure 6, a second structure 7 and the above-mentioned connecting member. The first structure 6 and the second structure 7 both have through grooves, the stud 11 of the connecting member passes through the through grooves of the first structure 6 and the second structure 7, the nut 12 is located on the side of the first structure 6 away from the second structure 7, the washer 5 and the nut assembly are located on the side of the second structure 7 away from the first structure 6, the first positioning matching portion on the washer 5 and the second structure 7 are limitedly matched, and the second positioning matching portion on the washer 5 and the nut assembly are limitedly matched.

[0059] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details in detail, nor do they limit the present application to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can understand and use the present application well. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A connecting piece, characterized in that: include: A bolt body, wherein the bolt body has a stud and a nut connected to the stud; A nut assembly, the nut assembly comprising a first nut, a second nut and a locking nut, the first nut, the second nut and the locking nut are all threadedly connected to the stud, and the locking nut is located between the first nut and the second nut; Among them, the normal lines of the end faces on both sides of the locking nut along the thickness direction and the extension direction of the stud have an angle. In the process of the first nut and the second nut approaching each other, the locking nut can be squeezed so that the end face of the locking nut is perpendicular to the stud, the external thread of the stud is deformed, and the locking nut is locked on the stud.

2. The connecting piece according to claim 1, characterized in that: The locking nut has a thickness smaller than that of the first nut and the second nut.

3. The connecting piece according to claim 1, characterized in that: The stud is provided with a plurality of first strip grooves, each of which is spaced in sequence along the circumference of the stud, each of which extends along the length direction of the bolt, and each of which divides the thread on the stud into a plurality of arc segments.

4. The connecting piece according to claim 3, characterized in that: When the first nut and the second nut approach each other and squeeze the locking nut, the internal thread of the locking nut can be embedded in the first strip groove, and the arc segment restricts the locking nut from rotating around the stud.

5. The connecting piece according to claim 4, characterized in that: A plurality of second strip grooves are arranged on the thread groove of the locking nut, and each of the second strip grooves is arranged in sequence and spaced apart along the circumference of the locking nut, and each of the second strip grooves extends along the thickness direction of the locking nut, and each of the second strip grooves divides the thread on the thread groove of the locking nut into a plurality of arc segments.

6. The connector according to claim 1, characterized in that: The first nut is located on a side of the second nut close to the nut, and a first helical gear ring is provided on a side of the first nut away from the nut; A second bevel gear ring is provided on a side of the locking nut facing the first nut, and the inclination directions of the convex teeth of the first bevel gear ring and the second bevel gear ring are opposite. When the first bevel gear ring and the second bevel gear ring are meshed, the first bevel gear ring limits the locking nut from rotating around the rotation direction of the disengagement stud.

7. The connecting piece according to claim 6, characterized in that: A third helical gear ring is provided on a side of the second nut facing the locking nut; A fourth bevel gear ring is provided on a side of the locking nut facing the second nut, and the convex teeth of the third bevel gear ring and the fourth bevel gear ring are inclined in opposite directions. When the third bevel gear ring and the fourth bevel gear ring are meshed, the fourth bevel gear ring limits the second nut from rotating around the rotation direction of the disengagement stud.

8. The connecting piece according to claim 6, characterized in that: A fifth oblique tooth ring is arranged on a side of the nut facing the stud.

9. An assembly structure, characterized in that: include: A first structure body and a second structure body, wherein the first structure body and the second structure body both have a through groove; The connector as described in any one of claims 1 to 8, wherein the stud of the connector passes through the through grooves of the first structure and the second structure, the nut is located on the side of the first structure facing away from the second structure, and the nut assembly is located on the side of the second structure facing away from the first structure.

10. The assembly structure according to claim 9, characterized in that: The first structure is provided with a positioning matching groove connected to the through groove, the nut is partially embedded in the positioning matching groove, and the positioning matching groove limits the rotation of the nut relative to the first structure.

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