Search

CN-224213944-U - Double-holding electromagnetic lock with vibration-resistant function

CN224213944UCN 224213944 UCN224213944 UCN 224213944UCN-224213944-U

Abstract

The utility model discloses a double-holding electromagnetic lock with an anti-vibration function, which comprises a shell, a spool, a coil, a permanent magnet, a fixed iron core A, a fixed iron core B, a push rod and a bottom cover, and relates to the field of electromagnetic locks.

Inventors

  • HUANG YIBI
  • ZHONG KEMING

Assignees

  • 江西省博顺磁电科技有限公司

Dates

Publication Date
20260508
Application Date
20250512

Claims (7)

  1. 1. The electromagnetic lock with the vibration resistance comprises a shell (1), a spool (2), a coil (3), a permanent magnet (4), a fixed iron core A (5), a fixed iron core B (6), a push rod (7) and a bottom cover (8), wherein the coil (3) is fixedly sleeved on one side of the spool (2), the permanent magnet (4) is fixedly arranged in a groove arranged on the other side of the spool (2), the shell (1) is U-shaped and is provided with a perforation at the bottom, the middle of the fixed iron core A (5) is provided with a perforation and is fixed at the bottom of the shell (1), the fixed iron core B (6) is fixedly connected with the bottom cover (8), the electromagnetic lock is characterized by further comprising an elastic mechanism (9) and a movable iron core (10), a containing cavity with two ends being communicated is arranged in the movable iron core (10), the perforation diameter at one end of the containing cavity is smaller than that of the containing cavity, the elastic mechanism (9) is fixedly connected with one end of the push rod (7) and then is placed in the containing cavity arranged on the movable iron core (10), so that the push rod (7) can axially reciprocate relative to the movable iron core (10) and can axially move in the spool (2) or axially extend and be directly connected with the spool (2), the other end of the push rod (7) extends out of the shell (1) through a perforation arranged at the bottom of the shell (1) and the fixed iron core A (5).
  2. 2. The electromagnetic lock with the vibration resistance function according to claim 1, further comprising a non-magnetic pipe fitting (11), wherein the non-magnetic pipe fitting (11) is fixedly connected in a through hole formed in the spool (2), and the movable iron core (10) is in sliding connection with the non-magnetic pipe fitting (11).
  3. 3. The electromagnetic lock with the vibration-resistant function according to claim 1 or 2, wherein the elastic mechanism (9) comprises a screw (91), a spring (92), a spring base A (93), a spring base B (94) and a retainer ring (95), one end of the screw (91) is provided with a radial protruding limiting part, the spring base A (93) is sleeved on the screw and is abutted with the protruding limiting part, one end of the spring (92) is sleeved on the screw (91) and is abutted with the spring base A (93), the spring base B (94) is placed into one end of a containing cavity in the movable iron core (10), the compositions of the screw (91), the spring (92) and the spring base A (93) are placed from the other end of the containing cavity of the movable iron core (10), the other end of the spring (92) is abutted with the spring base B (94), the push rod (7) is fixedly connected with the screw (91) through a through hole at one end of the containing cavity, and the retainer ring (95) is clamped with the movable iron core (10) through a groove at the other end of the containing cavity for preventing the screw (91) from falling off from the containing cavity.
  4. 4. The electromagnetic lock with the vibration-resistant function according to claim 1 or 2, wherein the elastic mechanism (9) comprises a telescopic rod (96) with a built-in spring and a retainer ring (95), one end of the telescopic rod (96) is provided with a radial protruding limiting part, the other end of the telescopic rod is placed in the accommodating cavity of the movable iron core (10) from the other end of the accommodating cavity and is fixedly connected with the push rod (7), and the retainer ring (95) is clamped with the movable iron core (10) through a groove arranged at the other end of the accommodating cavity and is abutted against the limiting part of the telescopic rod (96).
  5. 5. The electromagnetic lock with double-holding vibration-proof function as set forth in claim 4, wherein the diameter of the telescopic rod (96) is smaller than the inner diameter of the accommodating cavity of the movable iron core (10) and larger than the aperture of the perforation at one end of the accommodating cavity.
  6. 6. The electromagnetic lock with the vibration-resistant function according to claim 1 or 2, wherein the elastic mechanism (9) comprises a spring (92) and a retainer ring (95), one end of the push rod (7) is provided with a radial protruding part and is abutted against one end of the spring (92), the diameter of the radial protruding part is smaller than the inner diameter of the accommodating cavity of the movable iron core (10) and larger than the aperture of the perforation at one end of the accommodating cavity, and the retainer ring (95) is clamped with the movable iron core (10) through a groove arranged at the other end of the accommodating cavity and is abutted against the other end of the spring (92).
  7. 7. The electromagnetic lock with double-holding vibration-proof function as claimed in claim 2, wherein the non-magnetic pipe (11) is made of metal copper or plastic.

Description

Double-holding electromagnetic lock with vibration-resistant function Technical Field The utility model relates to the field of electromagnetic locks, in particular to a double-holding electromagnetic lock with an anti-vibration function. Background The electromagnetic lock is a device for realizing mechanical locking/unlocking by utilizing an electromagnetic principle, and is widely applied to the fields of security protection, automatic control, traffic, industrial equipment and the like. The core principle is that a magnetic field is generated by exciting a coil through current, a metal armature (a spring bolt) is attracted to realize locking, and the locking is released after power failure. The double-hold electromagnetic lock is developed on the basis of the traditional electromagnetic lock technology in order to meet the requirements of power-off bistable state and energy saving, has obvious advantages in some use scenes for the traditional electromagnetic lock, but solves the problems that the electromagnetic lock falls off or the position is deviated due to vibration or vibration when the double-hold electromagnetic lock in the prior art is in use scenes of vibration generated by the double-hold electromagnetic lock during working and vibration caused by the outside. Disclosure of Invention The technical problem to be solved. Aiming at the defects of the prior art, the utility model provides a probe pen for an impedance tester, which solves the problems of test resistance deviation and unstable contact mentioned in the background art. And (II) technical scheme. The electromagnetic lock is characterized by further comprising an elastic mechanism and a movable iron core, wherein a containing cavity with two through ends is arranged in the movable iron core, the diameter of the perforation at one end of the containing cavity is smaller than that of the containing cavity, the elastic mechanism is fixedly connected with one end of a push rod and then is arranged in the containing cavity of the movable iron core, so that the push rod can axially reciprocate relative to the movable iron core, the movable iron core is provided with a perforation extending axially, the movable iron core is directly or indirectly connected with the spool in a sliding manner through the perforation arranged in the spool, and the other end of the push rod extends out of the shell through the bottom of the shell and the perforation arranged in the fixed iron core A. Preferably, the electromagnetic lock further comprises a non-magnetic pipe fitting fixedly connected in the through hole formed in the spool, and the movable iron core is in sliding connection with the non-magnetic pipe fitting. Preferably, the elastic mechanism comprises a screw, a spring base A, a spring base B and a retainer ring, wherein one end of the screw is provided with a radial protruding limiting part, the spring base A is sleeved on the screw and is in butt joint with the protruding limiting part, one end of the spring sleeve is sleeved on the screw and is in butt joint with the spring base A, the spring base B is placed into one end of a containing cavity in the movable iron core, a combination of the screw, the spring and the spring base A is placed into the other end of the containing cavity of the movable iron core, the other end of the spring is in butt joint with the spring base B, the push rod is fixedly connected with the screw through a perforation at one end of the containing cavity, and the retainer ring is clamped with the movable iron core through a groove at the other end of the containing cavity and is used for preventing the screw from falling from the containing cavity. Preferably, the elastic mechanism comprises a telescopic rod with a built-in spring and a check ring, one end of the telescopic rod is provided with a radial protruding limiting part, the other end of the telescopic rod is placed in the movable iron core accommodating cavity from the other end of the movable iron core accommodating cavity and is fixedly connected with the push rod, and the check ring is connected with the limiting part of the telescopic rod in a clamping and abutting mode through a groove arranged at the other end of the accommodating cavity. Preferably, the diameter of the telescopic rod is smaller than the inner diameter of the accommodating cavity of the movable iron core and larger than the aperture of the perforation at one end of the accommodating cavity. Preferably, the elastic mechanism comprises a spring and a retainer ring, one end of the push rod is provided with a radial protruding part and is abutted against one end of the spring, the diameter of the radial protruding part is smaller than the inner diameter of the accommodating cavity of the movable iron core and larger than the aperture of the perforation at one end of the accommodating cavity, and the retainer ring is in clamping connection with the movable iron core through a groove arrange