CN215680535U

CN215680535U - Contact adhesion prevention type electromagnetic switch

Info

Publication number: CN215680535U
Application number: CN202121993953.4U
Authority: CN
Inventors: 杨宜铮; 刘珈妤; 沈建芬
Original assignee: Wuxi Xixing Automobile Electric Appliance Co ltd
Current assignee: Foshan Yishengda Magnetoelectric Technology Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-01-28
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses a contact adhesion prevention type electromagnetic switch, which comprises: the switch comprises a switch shell, wherein an armature is arranged on one side in the switch shell, a spring is welded in the middle of one side of the armature, one end, far away from the armature, of the spring is fixedly connected to the inner wall of the switch shell, a movable contact piece is fixedly connected to the surface of one side, far away from the spring, of the armature, a static contact piece is arranged on one side, far away from the spring, of the armature and is fixedly connected to the inner wall of the switch shell through a connecting strip, and distance adjusting mechanisms are arranged at two ends of one side, opposite to the spring, of the armature, and the switch has the advantages that: through setting up roll adjustment mechanism, can adjust the initial position between movable contact and the static contact through roll adjustment mechanism, avoid movable contact position and static contact to lead to the reset moment undersize of spring too closely and make the adhesion between the contact, through setting up fixed establishment, fixed establishment can carry on spacingly to the connecting block for the screw rod of connecting block one end is more stable, has improved roll adjustment mechanism's stability.

Description

Contact adhesion prevention type electromagnetic switch

Technical Field

The utility model relates to the technical field of electromagnetic switches, in particular to a contact adhesion prevention type electromagnetic switch.

Background

When the electromagnetic switch operates, the moving contact on the armature is pulled by the magnetism of the internal electromagnet coil to press the fixed contact to complete the circuit connection, and when current passes between the moving contact and the fixed contact, sparks can be generated.

Under the prior art, the position of the movable contact is inconvenient to adjust, when the position of the movable contact is too close to the fixed contact, the reset moment of the spring is too small, the return is slow, and arc discharge is generated in the return process to cause the contacts to be adhered.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that the position of a movable contact is inconvenient to adjust, when the position of the movable contact is too close to a fixed contact, the reset moment of a spring is too small, the return is slow, and arc discharge is generated in the return process to cause the contacts to be adhered, so that the contact adhesion prevention type electromagnetic switch is provided.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a contact adhesion preventing type electromagnetic switch includes: the switch comprises a switch shell, wherein an armature is arranged on one side inside the switch shell, a spring is welded in the middle of one side of the armature, one end, far away from the armature, of the spring is fixedly connected to the inner wall of the switch shell, a movable contact spring is fixedly connected to the surface of one side, far away from the spring, of the armature, a static contact spring is arranged on one side, far away from the spring, of the armature and is fixedly connected to the inner wall of the switch shell through a connecting strip, and distance adjusting mechanisms are arranged at two ends, opposite to the spring, of the armature.

Preferably, the distance adjusting mechanism comprises two screw rods, the two screw rods are respectively connected in connecting holes in the upper portion and the lower portion of one side of the switch shell in a rotating mode, sleeve rods are respectively in threaded connection with the surfaces of the screw rods, the end portions of the two sleeve rods are respectively in surface contact with the upper portion and the lower portion of one side of the armature, the initial position between the movable contact piece and the static contact piece can be adjusted through the distance adjusting mechanism, and the phenomenon that the contact pieces are adhered due to the fact that the position of the movable contact piece is too close to the static contact piece and the reset moment of the spring is too small is avoided.

Preferably, every the one end that armature was kept away from to the screw rod all is provided with fixed establishment, fixed establishment all includes Z type piece, two the Z type piece is connected respectively in switch housing's outer wall both sides, every the relative switch housing's of Z type piece a side surface equal fixedly connected with fixed nest of blocks, every the relative switch housing outside one end equal fixedly connected with connecting block of screw rod, every fixed nest of blocks all cup joints on corresponding connecting block, and fixed establishment can carry on spacingly to the connecting block for the screw rod of connecting block one end is more stable, has improved roll adjustment mechanism's stability.

Preferably, every screw has all been seted up at one side both ends that Z type piece is close to switch housing, every equal threaded connection has the bolt between screw and the switch housing outer wall, dismantles every and can take off Z type piece to the bolt, and is very convenient.

Preferably, the cross section of each connecting block is square, the inner hole of each fixed sleeve block is matched with the corresponding connecting block, and when the connecting blocks are inserted into the corresponding fixed sleeve blocks, the connecting blocks can be limited and cannot rotate, so that the screw rods are fixed.

The utility model has the following advantages:

through setting up roll adjustment mechanism, can adjust the initial position between movable contact and the static contact through roll adjustment mechanism, avoid movable contact position and static contact to lead to the reset moment undersize of spring too closely and make the adhesion between the contact, through setting up fixed establishment, fixed establishment can carry on spacingly to the connecting block for the screw rod of connecting block one end is more stable, has improved roll adjustment mechanism's stability.

Drawings

Fig. 1 is a schematic perspective view of a contact-stick prevention type electromagnetic switch according to a preferred embodiment of the present invention;

fig. 2 is a partially cut-away structure view illustrating a screw joint of the contact-adhesion-preventing type electromagnetic switch according to a preferred embodiment of the present invention;

fig. 3 is a schematic diagram of a disassembled structure of a screw joint of the contact-adhesion-preventing electromagnetic switch according to a preferred embodiment of the present invention.

Description of reference numerals: 1. a switch housing; 2. an armature; 3. a movable contact spring; 4. a static contact piece; 5. a spring; 6. a distance adjusting mechanism; 61. a loop bar; 62. a screw; 7. a fixing mechanism; 71. a Z-shaped block; 72. fixing the sleeve block; 73. a screw hole; 74. a bolt; 75. and (4) connecting the blocks.

Detailed Description

The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

The electromagnetic switch comprises a switch shell 1 and an armature 2 at one side inside the switch shell 1, wherein a spring 5 is welded at the middle part of one side of the armature 2, one end of the spring 5 far away from the armature 2 is fixedly connected with the inner wall 1 of the switch shell, when an electromagnet coil inside the switch shell 1 is electrified, the electromagnet can attract the armature 2 to enable the armature 2 to move towards a static contact piece 4, the spring 5 is stretched along with the armature 2, a movable contact piece 3 is fixedly connected with the surface of one side of the armature 2 far away from the spring 5, the static contact piece 4 is arranged at one side of the armature 2 far away from the spring 5, the movable contact piece 3 can be driven to move when the armature 2 moves to press the static contact piece 4 to complete a circuit connection, the static contact piece 4 is fixedly connected with the inner wall of the switch shell 1 through a connecting bar, distance adjusting mechanisms 6 are arranged at two ends of one side of the armature 2 opposite to the spring 5, the initial position between the movable contact piece 3 and the static contact piece 4 can be adjusted through the distance adjusting mechanisms 6, the contact adhesion caused by the undersize reset moment of the spring 5 due to the fact that the position of the movable contact is too close to the fixed contact is avoided.

Wherein, for the quick roll adjustment that carries on, roll adjustment mechanism 6 includes two loop bars 61 and two screw rods 62, and switch housing 1 one side upper and lower part all has seted up the connecting hole and the connecting hole in all rotates and is connected with corresponding screw rod 62 one end, and when screw rod 62 rotated, the loop bar 61 of screw rod 62 surface threaded connection moved thereupon, because the non-opening tip of two loop bars 61 respectively with armature 2 one side upper and lower part surface contact, when two loop bars 61 moved, armature 2 can remove thereupon.

Wherein, in order to make the screw rod 62 more stable, the one end that every screw rod 62 kept away from armature 2 all is provided with fixed establishment 7, fixed establishment 7 all includes Z type piece 71 and fixed nest of blocks 72, the equal fixedly connected with fixed nest of blocks 72 of a side surface of every Z type piece 71 relative screw rod 62, when the screw rod 62 need not to rotate, usable every fixed nest of blocks 72 is spacing to corresponding screw rod 62, because every screw rod 62 is close to the outside one end of switch housing 1 and all welds the connecting block 75 that the cross-section is the square, and every fixed nest of blocks 72 all cup joints on corresponding connecting block 75, when connecting block 75 pegs graft in corresponding every fixed nest of blocks 72, connecting block 75 can be restricted unable the rotation, thereby fix screw rod 62, and the hole of fixed nest of blocks 72 all matches with corresponding connecting block 75, it is more stable to laminate.

Wherein, in order to dismantle Z type piece 71 fast and remove the spacing to screw rod 62, two Z type pieces 71 are dismantled respectively and are connected in switch housing 1's outer wall both sides, and equal threaded connection has bolt 74 between screw 73 that every Z type piece 71 was seted up near switch housing 1 one side both ends and the switch housing 1 outer wall, dismantles and to take off Z type piece 71 to bolt 74, and is very convenient.

The working principle is as follows: when the electromagnetic switch is used, an electromagnet coil inside the electromagnetic switch is electrified to attract the armature 2 to move, so that the movable contact piece 3 on the armature 2 moves towards the static contact piece 4 to be pressed and connected, when the initial position between the movable contact piece 3 and the static contact piece 4 is too close to easily cause adhesion, the electromagnetic switch can be adjusted through the distance adjusting mechanism 6, firstly two pairs of bolts 74 are disassembled to ensure that the Z-shaped blocks 71 lose fixation, namely two Z-shaped blocks 71 can be disassembled, after the connecting block 75 at one end of each screw rod 62 loses the limit, the two connecting blocks 75 can be rotated to drive the two screw rods 62 to rotate, so that the loop bars 61 on the surfaces of the two screw rods 62 move, when the two loop bars 61 move, the armature 2 in contact with the loop bars can be pushed to move, the initial distance between the movable contact piece 3 on the armature 2 and the static contact piece 4 is changed, and after the distance is adjusted to a proper distance, the connecting blocks 75 stop rotating, the fixed sleeve blocks 72 on the corresponding Z-shaped blocks 71 are sleeved on each connecting block 75, the cross sections of the fixed sleeve blocks 72 and the cross sections of the connecting blocks 75 are square and matched, the connecting blocks 75 are limited by the fixed sleeve blocks 72 and cannot rotate, so that the screw rods 62 at one ends of the connecting blocks 75 are more stable, and then each pair of bolts 74 penetrate through the screw holes 73 of the corresponding Z-shaped blocks 71 and are in threaded connection with the outer wall of the switch shell 1, and the Z-shaped blocks 71 can be fixed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Other parts of the utility model not described in detail are prior art and are not described in detail herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A contact adhesion preventing type electromagnetic switch includes: the switch shell (1) is characterized in that an armature (2) is arranged on one side of the interior of the switch shell (1), a spring (5) is welded in the middle of one side of the armature (2), one end, far away from the armature (2), of the spring (5) is fixedly connected to the inner wall of the switch shell (1), a movable contact piece (3) is fixedly connected to the surface of one side, far away from the spring (5), of the armature (2), a static contact piece (4) is arranged on one side, far away from the spring (5), of the armature (2), the static contact piece (4) is fixedly connected to the inner wall of the switch shell (1) through a connecting strip, and distance adjusting mechanisms (6) are arranged at two ends of one side, opposite to the spring (5), of the armature (2).

2. The contact adhesion preventing type electromagnetic switch according to claim 1, wherein the distance adjusting mechanism (6) comprises two threaded rods (62), the two threaded rods (62) are respectively rotatably connected in the connecting holes at the upper and lower parts of one side of the switch housing (1), the surfaces of the threaded rods (62) are respectively and threadedly connected with the loop bars (61), and the ends of the two loop bars (61) are respectively in surface contact with the upper and lower parts of one side of the armature (2).

3. The contact adhesion preventing type electromagnetic switch according to claim 2, wherein a fixing mechanism (7) is disposed at one end of each screw rod (62) far away from the armature (2), each fixing mechanism (7) comprises a Z-shaped block (71), the two Z-shaped blocks (71) are respectively connected to two sides of the outer wall of the switch housing (1), a fixing sleeve block (72) is fixedly connected to a surface of one side of each Z-shaped block (71) opposite to the switch housing (1), a connecting block (75) is fixedly connected to one end of each screw rod (62) opposite to the outside of the switch housing (1), and each fixing sleeve block (72) is sleeved on the corresponding connecting block (75).

4. The contact adhesion preventing type electromagnetic switch according to claim 3, wherein each Z-shaped block (71) has a screw hole (73) at both ends of one side thereof near the switch housing (1), and a bolt (74) is threadedly connected between each screw hole (73) and the outer wall of the switch housing (1).

5. The contact-sticking prevention type electromagnetic switch according to claim 3, wherein each of the connecting blocks (75) has a square cross section, and an inner hole of each of the fixed nest blocks (72) is matched with the corresponding connecting block (75).