CN110873116A

CN110873116A - Thread cross key locking mechanism

Info

Publication number: CN110873116A
Application number: CN201911163192.7A
Authority: CN
Inventors: 孔卓
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: Sinotruk Jinan Power Co Ltd; China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-03-10
Anticipated expiration: 2039-11-25
Also published as: CN110873116B

Abstract

In order to solve the problem that automobile parts are easy to rotate and loosen under the action of external force, the invention provides another thread cross key locking mechanism which mainly comprises a fixed base, a rotating part and a cross key, wherein the fixed base is provided with an inner hole, the rotating part is coaxially distributed in the inner hole, the diameter of the inner hole of the fixed base is larger than the diameter of the outer circle of the rotating part, an inner thread used for being connected with other parts is arranged in the rotating part, a first notch is arranged on the inner surface of the base, a second notch is arranged on the outer surface of the rotating part, the cross key is integrally in a cross structure and mainly comprises a key body in an arc structure, and a first boss and a second boss which are fixedly connected to the front end and the rear end of the key body, the key body is connected between the inner circle of the fixed base and the outer circle of the rotating part in a clearance fit, the device has the advantages of simple structure, easy operation, high locking strength and good effect.

Description

Thread cross key locking mechanism

Technical Field

The invention belongs to the technical field of automobile parts, and particularly relates to a threaded cross key locking mechanism.

Background

The common not hard up problem of screw thread locking spare part, especially automobile parts receives vibration and other external force influences for a long time, and rotating part often can produce rotatory pine and take off under effort such as vibration, impact, draw and press, produces serious influence to the mechanism normal work. The common thread locking comprises a double nut, a special-shaped thread, nut end face teeth, a locking gasket, a split pin and the like, and the problems of small locking force, large influence caused by vibration, high cost, difficult processing, requirement on complete equipment and the like exist respectively.

Disclosure of Invention

In order to solve the problems, the invention provides a locking mechanism of a threaded cross key, which adopts the following technical scheme:

the utility model provides a screw thread cross key locking mechanism, its characterized in that mainly includes fixed baseplate, rotates piece and cross key, fixed baseplate is equipped with the hole, it is inside to rotate piece coaxial distribution in hole to fixed baseplate hole diameter is greater than and rotates piece excircle diameter, rotate the inside internal thread that is used for linking to each other with other parts that is equipped with of piece, be equipped with first notch on the base internal surface, rotate and be equipped with the second notch on the piece surface, the cross key wholly is cruciform structure, mainly comprises the key body that is convex structure and the first boss and the second boss at both ends around the key body, key body clearance fit connects in fixed baseplate in the circle and rotates between the excircle, first boss and second boss link to each other with first notch and second notch cooperation respectively.

Preferably, the cross key is provided with a certain thickness.

Preferably, the first recess and the second recess are located in the same plane.

The invention has the beneficial effects that:

1. the cross key body is connected between the inner circle of the fixed base and the outer circle of the rotating part in a clearance fit mode and is provided with a certain thickness, when the cross key body rotates, the left end and the right end of the key body can be respectively contacted with the inner circle of the fixed base and the outer circle of the rotating part to generate interaction force, the cross key can be effectively prevented from being overturned and separated, and the locking effect is guaranteed;

2. the locking mechanism takes the fixed base as a force bearing base point, the fixed base is a fixed part, and the cross key cannot move in the notches of the rotating part and the fixed base under the spatial limitation to prevent the rotating part from rotating, so that the parts connected with the rotating part are limited to rotate or loosen under the action of external force, and the anti-loosening effect is remarkable;

3. the locking mechanism has the advantages of simple structure, reasonable design, high locking strength, low cost, simple assembly process and easy operation.

Drawings

FIG. 1 is a schematic view of the structure of the invention

FIG. 2 is a view from A to A

Wherein, 1-fixed base, 2-cross key, 3-rotating piece, 4-screw thread.

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.

As shown in fig. 1, the cross screw locking mechanism mainly comprises a fixed base 1, a rotating member 3, and a cross key 2, wherein the fixed base 1 is provided with an inner hole passing through an axis, the rotating member 3 is coaxially distributed in the inner hole, and the diameter of the outer circle of the rotating member 3 is smaller than that of the inner hole of the fixed base 1, namely, a certain gap is arranged between the outer circle surface of the rotating member 3 and the inner surface of the inner hole of the fixed base 1, a first notch is arranged on the inner surface of the inner hole of the fixed base 1, a second notch is arranged on the outer circle surface of the rotating member 3, the first notch and the second notch are positioned on the same plane in the depth direction, the cross key 2 is of a cross structure and has a certain thickness, and mainly comprises a key body of an arc structure and a first boss and a second boss which are fixedly connected with the front end and the rear, cross key 2 carries out the locking through two bosss between to fixed baseplate 1 and two notches that rotate piece 3, in addition, cross key 2 sets up certain thickness, prevent to overturn out from fixed baseplate 1 and the notch that rotates piece 3, the internal surface that rotates piece 3 is equipped with screw thread 4, other parts link to each other with rotating piece 3 through screw thread 4, and it is spacing to carry out the locking through cross key 2, prevent to produce the pine and take off under the exogenic action such as vibration, impact between part and the rotation piece 3.

During assembly, the position of the fixed base 1 is assembled at first, then the rotating part 3 is screwed into the corresponding assembly position in the fixed base 1, the circumferential position of the rotating part 3 is adjusted to enable the second notch on the rotating part 3 to be opposite to the first notch of the fixed base 1, meanwhile, the two notches are roughly in the same plane, the cross key 2 is placed into the cross key, the key body is placed between the inner circle of the fixed base 1 and the outer circle of the rotating part 3, and meanwhile, the two bosses are clamped into the corresponding notches respectively, so that the locking of the threaded connecting part is guaranteed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a screw thread cross key locking mechanism, its characterized in that mainly includes fixed baseplate, rotates piece and cross key, fixed baseplate is equipped with the hole, it is inside to rotate piece coaxial distribution in hole to fixed baseplate hole diameter is greater than and rotates piece excircle diameter, rotate the inside internal thread that is used for linking to each other with other parts that is equipped with of piece, be equipped with first notch on the base internal surface, rotate and be equipped with the second notch on the piece surface, the cross key wholly is cruciform structure, mainly comprises the key body that is convex structure and the first boss and the second boss at both ends around the key body, key body clearance fit connects in fixed baseplate in the circle and rotates between the excircle, first boss and second boss link to each other with first notch and second notch cooperation respectively.

2. A threaded cross key locking mechanism according to claim 1, wherein the cross key is provided with a thickness.

3. A threaded cross key locking mechanism according to claim 1 or 2, wherein the first and second recesses are located in the same plane.