CN211599228U

CN211599228U - Connection structure

Info

Publication number: CN211599228U
Application number: CN201922028202.8U
Authority: CN
Inventors: 赵振龙; 王斌
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-09-29
Anticipated expiration: 2029-11-19

Abstract

The utility model belongs to the technical field of mechanical assembly, concretely relates to connection structure. The connection structure includes: a bolt including a threaded rod and a seal coupled to the threaded rod; the screw rod is provided with a threaded hole matched with the screw rod, a tapered hole is arranged at the inlet of the threaded hole, and the tapered hole and the sealing element form a sealing surface along the circumferential direction. According to the utility model discloses a connection structure, bolt include screw rod and sealing member, are included screw hole and bell mouth by the connecting piece, realize the bolt through the cooperation of screw rod and screw hole and by being connected of connecting piece, form the sealed face of circumference through the cooperation of sealing member and bell mouth to realize the bolt and by the sealed between the connecting piece.

Description

Connection structure

Technical Field

The utility model belongs to the technical field of mechanical assembly, concretely relates to connection structure.

Background

In the prior art, a mode of applying a sealant to threads between a bolt and a connected piece is generally adopted to ensure the tightness between the bolt and the connected piece. The thread fit clearance between the existing bolt and the connected piece is large, the sealing capability of thread sealing glue is limited, and the sealing reliability can not be ensured. In addition, because the coating uniformity of the sealant is poor, the sealant can not be coated on part of threads between the bolt and the connected piece easily, and the problem of sealing failure between the bolt and the connected piece is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of bolted connection sealing failure at least. The purpose is realized by the following technical scheme:

the utility model provides a connection structure, include: a bolt including a threaded rod and a seal coupled to the threaded rod; the connecting piece is provided with a threaded hole, a taper hole which is communicated with the threaded hole is formed at the inlet of the threaded hole, and the taper hole and the sealing piece form a sealing surface along the circumferential direction.

According to the utility model discloses connection structure, bolt include screw rod and sealing member, are included screw hole and bell mouth by the connecting piece, realize the bolt and be connected by the connecting piece through the cooperation of screw rod and screw hole, form the sealed face of circumference through the cooperation of sealing member and bell mouth to realize the bolt and by the sealed between the connecting piece.

In addition, according to the utility model discloses connection structure, can also have following technical characteristics:

in some embodiments of the present invention, the sealing member includes a polish rod and an annular boss provided on the polish rod, the polish rod is connected to the screw rod, and the annular boss forms a sealing surface along a circumferential direction with the tapered hole.

In some embodiments of the present invention, the annular boss is a cambered boss or a conical boss.

In some embodiments of the present invention, the annular boss and the screw rod are coaxially disposed, and the tapered hole and the threaded hole are coaxially disposed.

In some embodiments of the present invention, the maximum diameter of the annular boss is greater than the maximum diameter of the tapered hole.

In some embodiments of the present invention, the bolt further comprises an installation part, the installation part is disposed on the polish rod and located outside the connected piece.

The utility model discloses an in some embodiments, the installation department be annular protrusion in the polished rod, the side of installation department is equipped with a plurality of faceted pebbles.

In some embodiments of the present invention, an installation portion chamfer is provided between the end surface of the installation portion and the edge surface.

In some embodiments of the present invention, the bolt is a stud bolt, and both ends of the stud bolt are respectively provided with a screw chamfer.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a connection structure according to an embodiment of the present invention;

fig. 2 is a sectional view of the coupling structure shown in fig. 1.

The reference symbols in the drawings denote the following:

10: bolt, 11: screw, 111: screw chamfering, 12: seal member, 121: polish rod, 122: annular boss, 13: mounting portion, 131: land, 132: chamfering the mounting part;

20: connected member, 21: threaded hole, 22: tapered hole, 23: and (4) a light hole.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a connection structure, including: the bolt 10 comprises a screw rod 11 and a sealing piece 12 connected with the screw rod 11, the connected piece 20 is provided with a threaded hole 21 matched with the screw rod 11, a taper hole 22 is arranged at the inlet of the threaded hole 21, and the taper hole 22 and the sealing piece 12 form a sealing surface along the circumferential direction.

According to the utility model discloses connection structure, bolt 10 includes screw rod 11 and sealing member 12, is included screw hole 21 and bell mouth 22 by connecting piece 20, realizes bolt 10 and is connected by connecting piece 20 through the cooperation of screw rod 11 with screw hole 21, forms the sealed face of circumference through the cooperation of sealing member 12 with bell mouth 22 to realize bolt 10 and by the sealed between the connecting piece 20.

In some embodiments of the present invention, the sealing member 12 includes a polish rod 121 and an annular boss 122 disposed on the polish rod 121, the polish rod 121 is connected to the screw rod 11, and the annular boss 122 and the tapered hole 22 form a sealing surface along the circumferential direction, so as to ensure the sealing performance between the bolt 10 and the connected member 20.

In some embodiments of the present invention, the annular boss 122 is an arc boss or a conical boss, and the angle between the arc boss or the conical boss and the axis of the bolt 10 is equivalent to the angle between the tapered hole 22 and the axis of the threaded hole 21, so as to ensure that a sealing surface can be formed between the annular boss 122 and the tapered hole 22.

Specifically, the annular boss 122 includes two parts, one of which is an arc-shaped boss or a tapered boss and is in contact with the tapered hole 21, and the other of which is located outside the connected member 20 and is in the shape of an arc-shaped boss, a tapered boss or a boss in another shape, and the other part is in the shape of an arc-shaped boss for better appearance.

Further, the annular boss 122 is coaxially arranged with the screw rod 11, the tapered hole 22 is coaxially arranged with the threaded hole 21, and the screw rod 11 is coaxially connected with the threaded hole 21, so that the coaxiality of the annular boss 122 and the tapered hole 22 is ensured, and the annular boss 122 and the threaded hole 21 form a sealing surface in the circumferential direction.

Further, for convenience of processing, the annular boss 122 is integrally formed with the polish rod 121.

In some embodiments of the present invention, the maximum diameter of the annular boss 122 is greater than the maximum diameter of the tapered hole 22, and the annular boss 122 serves as a limiting function.

The utility model discloses an in some embodiments, still include unthreaded hole 23 by connecting piece 20, unthreaded hole 23 and screw hole 21, the coaxial setting of bell mouth 22, and unthreaded hole 23 is located between screw hole 21 and the bell mouth 22, and unthreaded hole 23 cooperates with polished rod 121 to avoid screw hole 21 and bell mouth 22 direct contact, the screw thread causes the damage to annular boss 122 when causing bell mouth 22 and annular boss 122 to cooperate.

In some embodiments of the present invention, the bolt 10 further includes a mounting portion 13, the mounting portion 13 is disposed on the polish rod 121 and located outside the connected component 20, and the mounting portion 13 plays a role in facilitating mounting.

The utility model discloses an in some embodiments, installation department 13 is annular protrusion in polished rod 121, and the side of installation department 13 is equipped with a plurality of faceted pebbles 131, and the operator's use tools of being convenient for of faceted pebble 131 carries out the centre gripping to it, and is more even to the application of force of installation department 13.

In some embodiments of the present invention, an installation chamfer 132 is provided between the end surface of the installation portion 13 and the edge surface 131 to prevent the sharp part of the end surface of the installation portion 13 from damaging the surface of the user or the workpiece.

In some embodiments of the present invention, the bolt 10 may be a single head bolt or a stud bolt. When the bolt 10 is a stud bolt, the two ends of the bolt 10 are provided with screws 11, the middle of the screws at the two ends are provided with sealing members 12, and the two ends of the stud bolt are respectively provided with screw chamfers 111, so as to prevent sharp parts at the two ends of the screws 11 from damaging a user or the surface of a workpiece.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A connecting structure, characterized by comprising:

a bolt including a threaded rod and a seal coupled to the threaded rod;

the screw rod is provided with a threaded hole matched with the screw rod, a tapered hole is arranged at the inlet of the threaded hole, and the tapered hole and the sealing element form a sealing surface along the circumferential direction.

2. The connection according to claim 1, wherein the sealing member includes a polish rod connected to the threaded rod and an annular boss provided on the polish rod, the annular boss forming a circumferential sealing surface with the tapered hole.

3. The connecting structure according to claim 2, wherein the annular boss is an arc boss or a tapered boss.

4. The connection structure according to claim 2, wherein the annular boss is provided coaxially with the screw rod, and the tapered hole is provided coaxially with the threaded hole.

5. The connection according to claim 2, wherein a maximum diameter of the annular boss is larger than a maximum diameter of the tapered hole.

6. The connecting structure according to claim 2, wherein the bolt further comprises a mounting portion provided on the polish rod and located outside the connected member.

7. The connecting structure of claim 6, wherein the mounting portion protrudes from the polish rod in a ring shape, and a side surface of the mounting portion is provided with a plurality of prism surfaces.

8. The connecting structure according to claim 7, wherein a mounting portion chamfer is provided between an end surface and a ridge surface of the mounting portion.

9. The connecting structure according to claim 1, wherein the bolt is a stud bolt, and screw chamfers are provided at both ends of the stud bolt, respectively.