CN216975444U

CN216975444U - Reverse hanging screw

Info

Publication number: CN216975444U
Application number: CN202123350311.5U
Authority: CN
Inventors: 韩仕伟; 夏运波; 李强
Original assignee: Suzhou Shengzerun Electromechanical Co ltd
Current assignee: Suzhou Shengzerun Electromechanical Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-15
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a reverse hanging screw which comprises an external thread sleeve, a narrow-diameter port, an end cover, a hollow inner cavity, a screw rod, an anti-falling check ring, an outer shaft neck, an inner shaft neck, an internal thread sleeve and a compression spring, wherein the narrow-diameter port and the end cover are respectively arranged at two ends of the external thread sleeve to form the hollow inner cavity, the screw rod is coaxially accommodated in the hollow inner cavity, the integrally formed convex anti-falling check ring is arranged in the middle of the screw rod along the peripheral surface, the outer diameter of the anti-falling check ring is larger than the inner diameter of the narrow-diameter port so as to be blocked in the hollow inner cavity, and the outer shaft neck and the inner shaft neck are arranged at two axial sides of the anti-falling check ring. By the mode, the reverse hanging screw is replaced by matching a screw rod with an external thread sleeve, an anti-falling check ring is designed on the screw rod, the screw rod is sleeved into the external thread sleeve, single-side locking connection of any workpiece is achieved, and the reverse hanging screw has the advantages of being simple in structure, convenient to operate and the like.

Description

Reverse hanging screw

Technical Field

The utility model relates to the field of screws, in particular to a reverse hanging screw.

Background

The workpiece is usually fixed on the substrate to prevent the workpiece from displacing before processing, the fixing mode is usually realized by matching bolts and nuts, when the workpiece is manually installed, the bolts are required to be inserted into the bottom surface of the substrate, the nuts are locked on the surface of the substrate, the front side and the back side of the substrate are required to be manually operated, and under special processing conditions, the bottom surface of the substrate does not have a space for installing the bolts, so that the workpiece is difficult to be effectively fixed.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problem of providing the reverse hanging screw, aims at the problem that the traditional bolt needs to be installed and operated on two sides, is replaced by matching a screw rod with an external thread sleeve, designs an anti-drop check ring on the screw rod, sleeves the screw rod into the external thread sleeve, realizes the single-side locking connection of any workpiece, and has the advantages of simple structure, convenient operation and the like.

In order to solve the technical problems, the utility model adopts a technical scheme that: provides a reverse hanging screw, which comprises an external thread sleeve, a narrow-diameter port, an end cover, a hollow inner cavity, a screw rod, an anti-drop check ring, an external journal, an internal thread sleeve and a compression spring, the two ends of the external thread sleeve are respectively provided with a narrow-diameter port and an end cover to form a hollow inner cavity, a screw rod is coaxially accommodated in the hollow inner cavity, the middle part of the screw rod is provided with an integrally formed convex anti-falling check ring along the circumferential surface, the outer diameter of the anti-falling check ring is larger than the inner diameter of the narrow-diameter port so as to be blocked in the hollow inner cavity, the two axial sides of the anti-drop retainer ring are provided with an outer journal and an inner journal, the outer journal is coaxially and movably matched in the narrow-diameter port, an internal thread sleeve is coaxially arranged on the inner side of the end cover, the internal thread sleeve is in timely matched locking connection with the screw rod, and the inner shaft neck is sleeved with a compression spring, and the compression spring is propped against the inner wall of the end cover in the inner thread sleeve.

In a preferred embodiment of the utility model, the two end faces of the screw rod are provided with screw interfaces.

In a preferred embodiment of the present invention, the screw interface is a socket head adapter.

In a preferred embodiment of the utility model, the compression spring is conical.

In a preferred embodiment of the utility model, when the internally threaded sleeve is duly and properly locked with the threaded rod, the end of the threaded rod is flush with the outer end face of the narrow-diameter port.

In a preferred embodiment of the utility model, when the internal thread sleeve and the screw rod are timely and completely disconnected, the anti-drop check ring is matched on the inner end face of the narrow-diameter port to enable the screwing interface to be ejected out.

The utility model has the beneficial effects that: the reverse hanging screw provided by the utility model is used for replacing a traditional bolt by matching a screw rod with an external thread sleeve aiming at the problem that the traditional bolt needs to be installed on two sides, an anti-falling check ring is designed on the screw rod, the screw rod is sleeved into the external thread sleeve, the single-side locking connection of any workpiece is realized, and the reverse hanging screw has the advantages of simple structure, convenience in operation and the like.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a block diagram of a preferred embodiment of a back-hanging screw of the present invention;

FIG. 2 is an exploded view of a preferred embodiment of a back-hanging screw of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-2, an embodiment of the present invention includes:

a reverse hanging screw comprises an external thread sleeve 1, a narrow-diameter port 2, an end cover 3, a hollow inner cavity 4, a screw rod 5, an anti-falling check ring 6, an outer journal 7, an inner journal 8, an internal thread sleeve 9 and a compression spring 10, wherein the narrow-diameter port 2 and the end cover 3 are respectively arranged at two ends of the external thread sleeve 1 to form the hollow inner cavity 4, the screw rod 5 is coaxially accommodated in the hollow inner cavity 4, the integrally formed outward-protruding anti-falling check ring 6 is arranged at the middle part of the screw rod 5 along the circumferential surface, the outer diameter of the anti-falling check ring 6 is larger than the inner diameter of the narrow-diameter port 2 to be blocked in the hollow inner cavity 4, the outer journal 7 and the inner journal 8 are arranged at two axial sides of the anti-falling check ring 6, the outer journal 7 is coaxially and movably matched in the narrow-diameter port 2, the internal thread sleeve 9 is coaxially arranged at the inner side of the end cover 3, and the internal thread sleeve 9 is matched and locked with the screw rod 5 at proper time, a compression spring 10 is sleeved on the inner journal 8, and the compression spring 10 is pressed against the inner wall of the end cover 3 in the inner threaded sleeve 9.

Wherein, screw joint interfaces 11 are arranged on two end faces of the screw rod 5.

Further, the screw-on connector 11 is an inner hexagonal connector.

Further, the compression spring 10 is tapered.

Further, when the internally threaded sleeve 9 is properly matched and completely locked with the screw rod 5, the end of the screw rod 5 is flush with the outer end face of the narrow-diameter port 2.

Further, when the internal thread sleeve 9 and the screw 5 are timely and completely disconnected, the anti-dropping check ring 6 is matched on the inner end face of the narrow-diameter port 2, so that the screwing interface 11 is ejected out.

In the initial state of the product, the end of the screw rod 5 is flush with the outer end face of the narrow-diameter port 2, and the screw rod 5 is in threaded connection with the internal thread sleeve 9.

When the product is used, the product can be installed on a base plate with a threaded hole, and the product is inserted into the screwing interface 11 through the inner hexagonal wrench and rotates clockwise, so that the external thread of the external thread sleeve 1 can be locked and fixed with the threaded hole of the base plate;

the layout of the threaded holes of the substrate corresponds to the mounting holes designed on the workpiece, before the workpiece is processed, the workpiece is firstly placed on a plurality of reverse hanging screws, then the mounting holes on the workpiece are checked, and the mounting holes are aligned with the screwing interface 11 of each reverse hanging screw;

after the alignment is finished, the screwing interface 11 is rotated anticlockwise by using the inner hexagonal wrench again, the screw 5 is loosened from the internal thread sleeve 9, after the screw is completely loosened, the screw 5 is ejected out by the compression spring 10, the anti-loosening check ring 6 in the ejected state is abutted against the inner end face of the narrow-diameter port 2, and the thread of the screw 5 is smoothly inserted into the mounting hole of the workpiece;

the workpiece can be fixed on the substrate only by installing a nut for each mounting hole of the workpiece.

In conclusion, the utility model provides a reverse hanging screw, aiming at the problem that the traditional bolt needs to be installed on two sides, the reverse hanging screw is replaced by a screw rod 5 matched with an external thread sleeve 1, an anti-falling check ring 6 is designed on the screw rod 5, the screw rod 5 is sleeved into the external thread sleeve 1, the single-side locking connection of any workpiece is realized, and the reverse hanging screw has the advantages of simple structure, convenience in operation and the like.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A reverse hanging screw is characterized by comprising an external thread sleeve, a narrow-diameter port, an end cover, a hollow inner cavity, a screw rod, an anti-falling check ring, an outer shaft neck, an inner shaft neck, an internal thread sleeve and a compression spring, wherein the narrow-diameter port and the end cover are respectively arranged at two ends of the external thread sleeve to form the hollow inner cavity, the screw rod is coaxially accommodated in the hollow inner cavity, the integrally formed outward-protruding anti-falling check ring is arranged at the middle part of the screw rod along the peripheral surface, the outer diameter of the anti-falling check ring is larger than the inner diameter of the narrow-diameter port to be blocked in the hollow inner cavity, the outer shaft neck and the inner shaft neck are arranged at two axial sides of the anti-falling check ring, the outer shaft neck is coaxially and movably matched in the narrow-diameter port, the internal thread sleeve is coaxially arranged at the inner side of the end cover, the internal thread sleeve is matched and locked with the screw rod at proper time, and the compression spring is sleeved on the inner shaft neck, and the compression spring is pressed against the inner wall of the end cover in the inner thread sleeve.

2. The reverse hanging screw according to claim 1, wherein the two end faces of the screw rod are provided with screw-in interfaces.

3. The reverse hanging screw according to claim 2, wherein the screwing interface is an inner hexagonal interface.

4. The reverse hanging screw according to claim 1, wherein said compression spring is tapered.

5. The back-hanging screw according to claim 1, wherein when the internally threaded sleeve is properly and fully locked with the threaded shank, the end of the threaded shank is flush with the outer end face of the narrow diameter port.

6. The back-hanging screw according to claim 2, wherein when the internally threaded sleeve is properly and completely disconnected from the threaded rod, the anti-drop retainer ring is engaged with the inner end surface of the narrow-diameter port to eject the screw connection port.