CN107100444B - Electromagnetic lock shaft, installation method thereof and electromagnetic lock - Google Patents

Abstract

The invention discloses an electromagnetic lock shaft, an installation method thereof and an electromagnetic lock. The magnetic conduction sliding ring is provided with a through shaft hole along the axial direction, and the outer surface of the magnetic conduction sliding ring is provided with a punching hole. The main shaft is integrally formed, and knurling surrounding the main shaft along the peripheral direction of the main shaft is arranged on the main shaft. The main shaft is riveted into the through shaft hole of the magnetic conduction slip ring, wherein two ends of the main shaft extend out of the through shaft hole respectively. The magnetic conduction slip ring is punched from outside to inside through the punching hole until the inner wall of the magnetic conduction slip ring penetrating through the shaft hole is riveted with the knurling of the main shaft. According to the electromagnetic lock shaft, the magnetic conduction slip ring is punched from outside to inside through the punching hole until the inner wall of the through shaft hole of the magnetic conduction slip ring is riveted with the knurling of the main shaft, so that the inner wall of the through shaft hole of the magnetic conduction slip ring is riveted with the knurling of the main shaft to form an interference structure, the effect of up-down buckling is achieved, the axial movement of the main shaft can be prevented, and the electromagnetic lock shaft is firm in structure and not easy to break.

Description

Electromagnetic lock shaft, installation method thereof and electromagnetic lock

Technical Field

The invention relates to an electromagnetic lock, in particular to an electromagnetic lock shaft.

Background

The electromagnetic lock comprises a lock shell, a mounting cylinder, two magnets, two retainers and an electromagnetic lock shaft. The electromagnetic lock shaft is provided with a main shaft and a magnetic conduction slip ring. Referring to fig. 1, a conventional spindle 10 'is generally divided into two sections 11', and the two sections 11 'are respectively connected to a magnetically conductive slip ring 20' by a threaded connection manner, so that the spindle can be easily installed in the magnetically conductive slip ring.

However, during long-term operation of the electromagnetic lock, the commonly assembled electromagnetic lock shaft, particularly at the junction between the two segments 11 'and the magnetically conductive slip ring 20', is prone to fracture, fall off, and movement, which severely affects the service life of the electromagnetic lock.

Disclosure of Invention

The invention mainly aims to overcome the defects of the prior art and provide the electromagnetic lock shaft which is not easy to break, firm in structure and easy to move in a stringing way and can prolong the service life of an electromagnetic lock.

In order to achieve the above purpose, the invention provides an electromagnetic lock shaft, which comprises a main shaft and a magnetic conduction slip ring. The magnetic conduction sliding ring is provided with a through shaft hole along the axial direction, and the outer surface of the magnetic conduction sliding ring is provided with a punching hole. The main shaft is integrally formed, and knurling surrounding the main shaft along the peripheral direction of the main shaft is arranged on the main shaft. The main shaft is riveted into the through shaft hole of the magnetic conduction slip ring, wherein two ends of the main shaft extend out of the through shaft hole respectively. The magnetic conduction slip ring is punched from outside to inside through the punching hole until the inner wall of the magnetic conduction slip ring penetrating through the shaft hole is riveted with the knurling of the main shaft.

The invention also provides an installation method of the electromagnetic lock shaft, which comprises the following steps:

firstly, enabling the main shaft to enter a through shaft hole of a magnetic conduction slip ring in a riveting mode, wherein two ends of the main shaft extend out of the through shaft hole respectively;

and then, the stamping tool is aligned with a stamping hole of the magnetic conduction slip ring until the inner wall of the magnetic conduction slip ring penetrating through the shaft hole is riveted with the knurling of the main shaft.

The invention also provides an electromagnetic lock which comprises a lock shell, a mounting cylinder, two magnets, two retainers and the electromagnetic lock shaft. The lock shell is provided with a front shell surface and a rear shell surface and two side surfaces connecting the two shell surfaces. Through holes are arranged on the front shell surface and the rear shell surface. The mounting cylinder is arranged between the front shell surface and the rear shell surface. The two retainers are arranged in the mounting cylinder and are separated at two ends of the mounting cylinder. The holder has a perforation concentric with the mounting barrel. The electromagnetic lock shaft is arranged in the mounting cylinder, and two ends of the main shaft penetrate out from the through holes of the two retainers and the through holes of the front shell surface and the rear shell surface.

As described above, the electromagnetic lock shaft provided by the invention is characterized in that the magnetic conduction slip ring is punched from outside to inside through the punching hole until the inner wall of the through shaft hole of the magnetic conduction slip ring is riveted with the knurl of the main shaft, so that the inner wall of the through shaft hole of the magnetic conduction slip ring is riveted with the knurl of the main shaft to form an interference structure, the effect of up-down buckling is achieved, the axial movement of the main shaft can be prevented, and the electromagnetic lock shaft is firm in structure and not easy to break.

Drawings

FIG. 1 is a schematic cross-sectional view of a conventional electromagnetic lock shaft;

FIG. 2 is a schematic cross-sectional view of the spindle of the electromagnetic lock shaft of the present invention;

FIG. 3 is a schematic perspective view of the magnetic slip ring of the electromagnetic lock shaft of the present invention;

FIG. 4 is a schematic cross-sectional view of the electromagnetic lock shaft of the present invention with a spindle riveted into the magnetically conductive slip ring;

FIG. 5 is an enlarged schematic view of FIG. 4 at I;

FIG. 6 is a schematic perspective view of an electromagnetic lock according to the present invention;

fig. 7 is a schematic cross-sectional view of the electromagnetic lock of fig. 6.

Detailed Description

The following describes embodiments of the present invention in detail. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the invention or its applications.

Referring to fig. 2, 3 and 4, the electromagnetic lock shaft of the present invention includes a main shaft 10 and a magnetically conductive slip ring 20.

The spindle 10 is integrally formed, and the spindle 10 is provided with knurling 11 around the spindle 10 in the peripheral direction of the spindle. The magnetic slip ring 20 is provided with a through shaft hole 21 along the axial direction, and the outer surface of the magnetic slip ring 20 is provided with a punching hole 22.

The main shaft 10 is riveted into the through shaft hole 21 of the magnetically conductive slip ring 20, wherein both ends of the main shaft 10 respectively protrude from the through shaft hole 21. The magnetically conductive slip ring 20 is punched from outside to inside through the punching hole 22 until the inner wall of the shaft hole 21 of the magnetically conductive slip ring 20 is riveted with the knurl 11 of the main shaft 10.

The invention also provides an installation method of the electromagnetic lock shaft, which comprises the following steps:

firstly, the main shaft 10 is driven to enter a through shaft hole 21 of a magnetic conduction slip ring 20 by riveting, wherein two ends of the main shaft 10 respectively extend out of the through shaft hole 21;

then, the punching tool is aligned with the punching hole 22 of the magnetically conductive slip ring 20 to punch until the inner wall of the through shaft hole 21 of the magnetically conductive slip ring 20 is riveted with the knurl 11 of the main shaft 10.

Referring to fig. 6 and 7, the electromagnetic lock of the present invention includes a lock case 30, a mounting cylinder 40, two magnets 50, two retainers 60, two coils 70, and the electromagnetic lock shaft described above.

The lock case 30 has front and rear case surfaces 31 and both side surfaces 32 connecting the case surfaces 31. The front and rear shell surfaces 31 are provided with through holes 311. The mounting cylinder 40 is disposed between the front and rear housing surfaces 31. The two retainers 60 are disposed in the mounting cylinder 40 and are separated from both ends of the mounting cylinder 40. The holder 60 has perforations concentric with the mounting cylinder 40. The electromagnetic lock shaft is installed in the installation cylinder 40, and two ends of the main shaft 10 are penetrated out from the through holes of the two retainers 60 and the through holes 311 of the front and rear shell surfaces 31. Two magnets 50 and two coils 70 are mounted on the mounting cylinder 40.

In summary, the electromagnetic lock shaft of the present invention presses the magnetically conductive slip ring 20 from outside to inside through the punching hole 22 until the inner wall of the through shaft hole 21 of the magnetically conductive slip ring 20 is riveted with the knurl 11 of the spindle 10, so that the inner wall of the through shaft hole 21 of the magnetically conductive slip ring 20 is riveted with the knurl 11 of the spindle 10 to form an interference structure, thereby achieving the effect of up-down fastening, preventing the spindle 10 from moving in axial direction, and having a firm structure and being not easy to break.

The foregoing is a further detailed description of the invention in connection with specific/preferred embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several alternatives or modifications can be made to the described embodiments without departing from the spirit of the invention, and these alternatives or modifications should be considered to be within the scope of the invention.

Claims (1)

1. The electromagnetic lock is characterized by comprising a lock shell, a mounting cylinder, two magnets, two retainers and an electromagnetic lock shaft, wherein the lock shell is provided with a front shell surface, a rear shell surface and two side surfaces connected with the two shell surfaces, through holes are formed in the front shell surface and the rear shell surface, the mounting cylinder is arranged between the front shell surface and the rear shell surface, the two retainers are arranged in the mounting cylinder and are separated at two ends of the mounting cylinder, the retainers are provided with perforations concentric with the mounting cylinder, and the electromagnetic lock shaft is arranged in the mounting cylinder;

the electromagnetic lock shaft comprises a main shaft and a magnetic conduction slip ring, wherein the magnetic conduction slip ring is provided with a through shaft hole along the axial direction, the outer surface of the magnetic conduction slip ring is provided with a punching hole, the main shaft is integrally formed, the main shaft is provided with knurls which encircle the main shaft along the peripheral direction of the main shaft, the main shaft is riveted and pressed into the through shaft hole of the magnetic conduction slip ring, the position of the punching hole corresponds to the position of the main shaft which is positioned in the knurls in the through shaft hole, the two ends of the main shaft respectively extend out from the through shaft hole, the magnetic conduction slip ring is punched from outside to inside through the punching hole until the inner wall of the through shaft hole of the magnetic conduction slip ring is riveted with the knurls of the main shaft, so that the inner wall of the through shaft hole of the magnetic conduction slip ring and the knurls of the main shaft are riveted to form an interference structure, and the two ends of the main shaft penetrate out from the through holes of two retainers and the front shell surface and the rear shell surface;

the installation method of the electromagnetic lock shaft comprises the following steps:

firstly, enabling the main shaft to enter a through shaft hole of a magnetic conduction slip ring in a riveting mode, wherein two ends of the main shaft extend out of the through shaft hole respectively;

and then, the stamping tool is aligned with a stamping hole of the magnetic conduction slip ring until the inner wall of the magnetic conduction slip ring penetrating through the shaft hole is riveted with the knurling of the main shaft.