CN217081046U

CN217081046U - Double-end stud structure

Info

Publication number: CN217081046U
Application number: CN202220583906.0U
Authority: CN
Inventors: 唐建才; 王超; 李海霞; 鲍长勇
Original assignee: Beijing Changan Automobile Engineering Technology Research Co Ltd
Current assignee: Beijing Changan Automobile Engineering Technology Research Co Ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-07-29
Anticipated expiration: 2032-03-17

Abstract

The utility model provides a double-end stud structure, which comprises an upper thread and a lower thread which are positioned at the upper end and the lower end, wherein a round platform, a middle extension bar, a thin nut and a limit platform are sequentially connected between the upper thread and the lower thread from bottom to top; the outer diameter of the circular truncated cone is larger than that of the lower thread and is used for being in press fit with the plane of the mounting part of the main body member; the excircle of the limiting table is used for being matched with an inner hole of an accessory component, the upper plane of the limiting table is used for being in compression fit with the lower plane of the locking nut, the outer diameter of the extension bar is smaller than the outer diameter of the circular table, the main body of the thin nut is a hexagonal flange nut, the lower end of the thin nut is a large circular plane, and the upper thread and the lower thread are both coated with thread glue. The utility model discloses guaranteed the straightness's that hangs down structural problem, accurate two-end stud axis and the planar straightness that hangs down of main part component concave station have guaranteed the clearance of extension bar with peripheral part, prevent to interfere, have guaranteed the operating stability when screwing up the instrument and screw up, have solved by adapting unit's pressurized deformation scheduling problem.

Description

Double-end stud structure

Technical Field

The utility model relates to an automotive fastener technical field, concretely relates to special stud structure.

Background

In the automobile and various industrial field fasteners, standard parts are widely used, a stud is one of the standard parts, the structural schematic diagram of the traditional stud is shown in figure 1, and the traditional stud is composed of a lower thread 11 of the traditional stud, an intermediate rod 12 and an upper thread 13 of the traditional stud and plays a role in intermediate connection; one end is screwed into the main body, the other end is provided with an accessory and a nut, and the main body is contacted with the accessory. Conventional stud installation schematic referring to fig. 2, specifically includes a conventional stud 1 for connecting a body member and an accessory member; a conventional body member 2 as a base for fixing a stud; a conventional accessory member 3 connected to the conventional body member 2 by a conventional stud; and a mounting nut 4 for threadedly engaging the stud to lock the conventional attachment member 3. The double-end stud has a simple structure and wide application range, and is suitable for most connections.

Another example is a stud and an automobile having the stud that includes a first threaded section, a second threaded section, a polished rod section located between the first threaded section and the second threaded section, and a locating structure disposed on the polished rod section. The positioning structure enables the light rod section to be partially embedded in the main frame and partially embedded in the auxiliary frame when the stud bolts are used for connecting the main frame of the automobile and the auxiliary frame of the automobile together.

The technology can not accurately guarantee the perpendicularity of the axis of the stud and the plane of the concave table of the main body component, can not guarantee the clearance between the intermediate rod and the peripheral parts, can not guarantee the operation stability when the tightening tool is tightened, and can not guarantee the pressed deformation of the connected part.

Disclosure of Invention

The utility model aims at providing a stud structure, to two fixed components that need keep the interval, can satisfy the installation demand under the specific environment, both guarantee the necessary clearance between each part, can realize the installation stable operation again simultaneously, the installation accuracy is high, prevents that the connecting piece pressurized deformation, avoids the bolt not hard up.

In order to solve the problems, the utility model provides a stud structure, which comprises an upper thread and a lower thread which are positioned at the upper end and the lower end, wherein a round platform, a middle extension bar, a thin nut and a limit platform are sequentially connected between the upper thread and the lower thread from bottom to top; the outer diameter of the circular truncated cone is larger than the outer diameter of the lower thread and is used for being in compression fit with the plane of the mounting part of the main body component, the outer circle of the limiting table is used for being matched with the inner hole of the accessory component, and the upper plane of the limiting table is used for being in compression fit with the lower plane of the locking nut.

Further, the outer diameter of the middle extension rod is smaller than that of the circular truncated cone so as to keep a gap between the middle extension rod and the peripheral matching mechanism.

Further, the main part of thin nut is hexagonal flange nut, and its lower extreme has the big circular plane that the diameter is greater than the main part for carry on spacingly to screwing up the sleeve.

Furthermore, thread glue is coated on both the upper thread and the lower thread.

The utility model discloses the beneficial effect who has:

(1) the structure problem of straightness that hangs down has been guaranteed to clearance structure, limit structure, locking structure of dodging has been solved.

(2) The perpendicularity of the axis of the double-end stud and the plane of the concave table of the main body component is accurately ensured.

(3) The gap between the extension bar and the peripheral parts is ensured, and interference is prevented.

(4) The operation stability of the tightening tool during tightening is ensured.

(5) The problems of compression deformation and the like of the connected part are solved.

Drawings

FIG. 1: the structure of the traditional double-end stud is schematically shown.

FIG. 2: a conventional stud installation schematic.

FIG. 3: the utility model discloses stud structure schematic diagram.

FIG. 3A is a top view of FIG. 3.

FIG. 4: the utility model discloses stud installation schematic diagram.

In the drawings, 1-traditional stud, 11-traditional stud lower thread, 12-middle column, 13-traditional stud upper thread;

2-traditional body member, 3-traditional accessory member, 4-mounting nut;

5-double-end stud, 51-lower thread, 52-round table, 53-middle extension bar, 54-thin nut, 55-limit table, 56-upper thread and 57-thread glue;

6-main body component, 7-telescoping mechanism, 8-accessory component and 9-locking nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail with reference to the following drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 3, 3A and 4, the utility model comprises an upper thread and a lower thread which are positioned at the upper end and the lower end, and a round platform, a middle extension bar, a thin nut and a limit platform are sequentially connected between the upper thread and the lower thread from bottom to top;

the lower thread 51 of the stud 5 is connected with the main body member 6 by threads, and the anti-loosening glue is used for preventing loosening;

the outer diameter of the round table 52 is larger than that of the lower thread 51, after the round table 52 is screwed into the main body member 6 through the lower thread 51, the lower plane of the round table 52 is pressed against the jointing surface of the main body member 6 to generate friction force, so that looseness is prevented, and the perpendicularity of the axis of the stud and the plane of the concave table of the main body member 6 can be ensured;

the middle extension bar 53 of the stud adopts the outer diameter reduction design, and the outer diameter is smaller than the outer diameter of the circular truncated cone, so that the clearance between the extension bar 53 and the periphery of the extension bar is ensured, and the interference is prevented;

the thin nut 54 can be used for screwing the lower thread 51 and the main body component 6 by a sleeve tool, a hexagonal flange nut is adopted as the theme of the thin nut, the universal sleeve is convenient to use for screwing, and the lower end of the thin nut is a large plane, so that the screwed sleeve can be limited and prevented from slipping;

the outer circle of the limiting table 55 is matched with the inner hole of the accessory component 9, and the upper plane of the limiting table is in compression fit with the lower plane of the locking nut 10, so that the nut can be prevented from being excessively compressed, and the accessory component 9 is prevented from being extruded and deformed;

the thread glue 57 is coated on the lower thread 51 and the upper thread 56 of the double-ended stud 5 and ensures that the connected member and the locking nut 9 have anti-loosening effect after being locked;

the body member 6 and the attachment member 9 can be stably and reliably connected together after the lock nut 10 is tightened.

Claims

1. A stud structure comprising upper (56) and lower (51) threads at upper and lower ends, characterized in that: a round table (52), a middle extension bar (53), a thin nut (54) and a limit table (55) are sequentially connected between the upper thread (56) and the lower thread (51) from bottom to top; the outer diameter of the circular truncated cone (52) is larger than that of the lower thread (51) and is used for being in press fit with the plane of the mounting part of the main body component (6); the outer circle of the limiting table (55) is matched with the inner hole of the accessory component (9), and the upper plane of the limiting table is in compression fit with the lower plane of the locking nut (10).

2. The stud structure of claim 1, wherein the intermediate extension (53) has an outer diameter less than the outer diameter of the circular table (52) for maintaining clearance with the peripheral engagement means.

3. The stud structure of claim 1, wherein: the thin nut (54) is a hexagonal flange nut, and the lower end of the thin nut is provided with a large circular plane with the diameter larger than that of the thin nut, and is used for limiting the screwing sleeve.

4. The stud structure of claim 1, wherein: and thread glue (57) is coated on the upper thread (56) and the lower thread (51).