CN211376535U

CN211376535U - Low-voltage DC contactor

Info

Publication number: CN211376535U
Application number: CN202020019517.6U
Authority: CN
Inventors: 瓦磊; 冯庆武
Original assignee: Jinquan Electric Dongguan Co ltd
Current assignee: Jinquan Electric Dongguan Co ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-08-28
Anticipated expiration: 2030-01-06

Abstract

The utility model belongs to the technical field of contactors, in particular to a low-voltage direct current contactor, which comprises a magnetic circuit mechanism and a coil assembly arranged in the magnetic circuit mechanism, wherein the upper end surface of the magnetic circuit mechanism is fixedly connected with a base, the bottom surface of the magnetic circuit mechanism is detachably connected with a lower housing, the upper end surface of the base is detachably connected with an upper housing, the upper end surface of the base is fixedly connected with a matching fixture block, and the bottom surface of the inner wall of the upper housing is fixedly connected with an upper housing inclined plane fixture block matched with the matching fixture block; increase mounting panel and base integration in the base design, ensure the precision of product installation, go up the mode that housing and lower housing adopted casing deformation joint this moment, improved the speed of installation and dismantlement, cooperation locking sliding sleeve and locking spiro union sleeve to last housing, the further completion locking of lower housing, the housing warp or the not enough condition that causes the crack of resilience force can not appear going up housing and lower housing, under the purpose that improves handling speed, has improved the stability of joint.

Description

Low-voltage DC contactor

Technical Field

The utility model belongs to the technical field of the contactor, concretely relates to low pressure direct current contactor.

Background

The dc contactor is a contactor used in a dc circuit, and is mainly used for controlling a dc circuit (a main circuit, a control circuit, an excitation circuit, and the like). The core of the dc contactor is not the same as the ac contactor in that it has no eddy current, and thus is generally formed in a circular shape using mild steel or industrial pure iron. Because the attraction coil component of the direct current contactor is electrified with direct current, the direct current contactor has no impact starting current and does not generate the phenomenon of violent impact of an iron core, thereby having long service life and being suitable for occasions of frequent starting and stopping.

The existing low-voltage direct current contactor mainly comprises a base part, a magnetic circuit system, a transmission part and a contact part, the existing product is only suitable for being matched with 4G communication equipment, a product housing is fixed by adopting a screw for connection, insufficient or excessive tightening force can occur in the manufacturing process, the housing is loosened when the tightening force is insufficient, the product is dustproof, and electric arcs of contacts overflow to cause short circuit, so that the use is unreliable. Excessive tightening force causes damage to the housing.

Accordingly, those skilled in the art have provided a low voltage dc contactor to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a low-voltage direct current contactor has quick dismantlement and stable in structure long service life's characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: the low-voltage direct current contactor comprises a magnetic circuit mechanism and a coil assembly arranged in the magnetic circuit mechanism, wherein the upper end surface of the magnetic circuit mechanism is fixedly connected with a base, the bottom surface of the magnetic circuit mechanism is detachably connected with a lower housing, the upper end surface of the base is detachably connected with an upper housing, a load switching assembly is arranged in the upper housing, the upper end surface of the base is fixedly connected with a matching clamping block, the bottom surface of the inner wall of the upper housing is fixedly connected with an upper housing inclined clamping block matched with the matching clamping block, the outer wall of the upper housing inclined clamping block is slidably connected with a locking sliding sleeve used for further limiting the upper housing inclined clamping block, one side of the base is fixedly connected with an installation plate used for installation, the base and the installation plate are integrally formed, the magnetic circuit mechanism is fixedly connected with a convex block, the top of the inner wall of the lower housing is, and the outer wall of the lower housing is screwed with a locking screwed sleeve for further limiting the lower housing inclined plane fixture block.

Preferably, the inner wall of the locking sliding sleeve is attached to the outer wall of the upper housing, and the bottom surface of the locking sliding sleeve is in contact with the upper end surface of the base.

Preferably, a rubber layer for increasing the sliding friction force between the locking sliding sleeve and the upper housing is fixedly connected to the inner wall of the locking sliding sleeve.

Preferably, the outer wall of the lower housing and a part of the lower housing corresponding to the lower housing inclined surface fixture block are smooth surfaces, and the upper end surface of the locking screw joint sleeve is flush with the upper end surface of the lower housing.

Preferably, the outer wall of the mounting plate is provided with a reinforcing rib.

Preferably, the upper end face of the upper cover shell is provided with a convex shell for increasing the inner cavity.

Preferably, the coil pack comprises a coil skeleton and two windings around the outer wall of the coil skeleton, a male end pin is connected to one side of the upper end face of the coil skeleton, and a coil pin is connected to one side of the lower end face of the coil skeleton.

Preferably, the outer wall of the coil assembly is sleeved with a coil shield, and one side of the magnetic circuit mechanism is provided with a connector male end plastic shell matched with the connecting male end pin.

Preferably, the upper end of the base is provided with two main loop connecting parts.

Compared with the prior art, the beneficial effects of the utility model are that:

1. increase mounting panel and base integration in the base design, ensure the precision of product installation, go up the mode that housing and lower housing adopted casing deformation joint this moment, improved the speed of installation and dismantlement, and then the cooperation locking slip sleeve pipe is to last housing, the further completion locking of lower housing with locking spiro union sleeve pipe, thereby the condition that upper shield and lower housing warp or resilience force is not enough to cause the small opening can not appear, under the purpose that improves loading and unloading speed, the stability of joint has been improved.

2. The coil of lower extreme is participated in on magnetic circuit mechanism's the coil skeleton, can ensure that the first end lead wire of winding directly twines on the coil skeleton, and direct tin sticky welding, the other end on the skeleton is participated in and is used for the public end of connector to insert the stitch simultaneously, and product coil binding post directly adopts the quick plug of connector, and the advantage of this innovation is favorable to coil production to realize automation equipment wire winding, winding first end, tin sticky.

3. Change traditional product coil and wrap up insulating mode with the PET sticky tape, this is suitable for novel to mould the shell with coil pin-out complex connector male end on the coil guard shield design, and this guard shield promotes insulating, compressive strength between coil and yoke.

4. Increase mounting panel and base integration in the base design, ensure the precision of product installation, add the muscle on the base simultaneously and dig the hole and alleviate the consumptive material of product, ensure part non-deformable.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a rear view of the present invention;

FIG. 4 is a schematic cross-sectional view of the coil bobbin of the present invention;

fig. 5 is a schematic perspective view of the middle coil assembly of the present invention.

In the figure: 1. a magnetic circuit mechanism; 11. a coil assembly; 111. a coil bobbin; 112. a winding; 113. a coil pin; 114. connecting the male terminal pin; 12. a raised block; 13. a coil shield; 14. a connector male end plastic shell; 2. a base; 21. matching the fixture block; 22. mounting a plate; 221. reinforcing ribs; 23. a main circuit connection part; 3. an upper housing; 31. a raised shell; 32. an inclined plane fixture block is covered on the upper cover; 4. a load switching component; 5. locking the sliding sleeve; 6. a lower housing shell; 61. a lower cover inclined plane fixture block; 7. the threaded sleeve is locked.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides the following technical solutions: the low-voltage direct current contactor comprises a magnetic circuit mechanism 1 and a coil assembly 11 arranged in the magnetic circuit mechanism 1, wherein the upper end surface of the magnetic circuit mechanism 1 is fixedly connected with a base 2, the bottom surface of the magnetic circuit mechanism 1 is detachably connected with a lower housing 6, the upper end surface of the base 2 is detachably connected with an upper housing 3, a load switching assembly 4 is arranged in the upper housing 3, the upper end surface of the base 2 is fixedly connected with a matched clamping block 21, the bottom surface of the inner wall of the upper housing 3 is fixedly connected with an upper housing inclined plane clamping block 32 matched with the matched clamping block 21, the outer wall of the upper housing inclined plane clamping block 32 is slidably connected with a locking sliding sleeve 5 for further limiting the upper housing inclined plane clamping block 32, one side of the base 2 is fixedly connected with an installation plate 22 for installation, the base 2 and the installation plate 22 are integrally formed, the magnetic circuit mechanism 1 is fixedly connected with a convex block 12, the outer wall of the lower housing 6 is screwed with a locking screw sleeve 7 for further limiting the lower housing inclined plane fixture block 61.

In this embodiment: the magnetic circuit mechanism 1 protects the coil component 11, the magnetic circuit mechanism 1 is fixedly connected with the base 2 by screws, when the upper cover shell 3 is installed, only the upper end face of the base 2 needs to be pressed, at the moment, the upper cover shell 3 deforms due to thin walls, at the moment, the upper cover inclined plane fixture block 32 inclines outwards, when the upper cover inclined plane fixture block 32 is matched with the matched fixture block 21, the upper cover inclined plane fixture block 32 elastically resets and is clamped with the matched fixture block 21, because the upper cover shell 3 can be influenced by the outside, such as temperature, the elasticity of the upper cover shell 3 is influenced, and the upper cover shell 3 can not completely reset, therefore, after the upper cover shell 3 is installed, the upper cover shell 3 is further limited by the locking sliding sleeve 5, so that the upper cover inclined plane fixture block 32 is always clamped and matched with the matched fixture block 21, and the lower cover inclined plane fixture block 61 of the lower cover shell 6 is clamped with the protruding block 12, at the moment, the lower cover shell 6 is screwed, and then restriction lower housing 6 takes place elastic deformation, so the mode of spiro union is adopted, because lower housing 6 may receive the influence of gravity, the effect that the spiro union mode made locking spiro union sleeve 7 can be stable to lower housing 6 play the restriction this moment, through this method can not appear upper housing 3 and lower housing 6 warp or the not enough condition that causes the crack of resilience force, under the purpose that improves loading and unloading speed, improved the stability of joint.

In fig. 1: the inner wall of the locking sliding sleeve 5 is attached to the outer wall of the upper housing 3, the bottom surface of the locking sliding sleeve 5 is in contact with the upper end face of the base 2, a rubber layer for increasing the sliding friction force between the locking sliding sleeve 5 and the upper housing 3 is fixedly connected to the inner wall of the locking sliding sleeve 5, the sliding friction force between the locking sliding sleeve 5 and the upper housing 3 can be increased through the rubber layer, and elastic deformation of the rubber layer can also apply inward elastic force to the upper housing 3, so that the fixing stability of the upper housing 3 and the base 2 is further increased, the upper housing 3 is basically rectangular in shape, and the locking sliding sleeve 5 is fixed more stably and is simple in structure through a sliding method.

In fig. 1: the outer wall of lower housing 6 is the smooth surface with the partly that lower housing inclined plane fixture block 61 corresponds, the up end of locking spiro union sleeve pipe 7 and the up end parallel and level of lower housing 6, because the part that lower housing 6 has lower housing inclined plane fixture block 61 can produce elastic deformation in the joint, the screw thread causes the screw thread to warp when housing 6 takes place elastic deformation down easily this moment, and then unable spiro union, consequently, adopt the smooth surface, and lower housing inclined plane fixture block 61 has with smooth surface complex joint muscle, because the length of screw thread does not need to be very long, the screw thread has only played fixed effect, the joint muscle can effectually laminate with the smooth surface this moment, when locking spiro union sleeve pipe 7 rotates the lapse, the joint muscle only need not influence under the condition of screw thread and the 6 marginal elastic deformation of lower housing can.

In fig. 3: the outer wall of the mounting plate 22 is provided with a reinforcing rib 221, and the reinforcing rib 221 ensures that parts are not easy to deform on the premise of reducing the consumable materials of the product.

In fig. 1-3: the upper end face of the upper housing 3 is provided with a convex shell 31 used for increasing an internal cavity, and the convex shell 31 increases the internal cavity of the upper housing 3, so that the normal working operation of the internal mechanism of the upper housing 3 is met.

In FIG. 4; coil assembly 11 comprises coil skeleton 111 and two windings 112 around coil skeleton 111 outer wall, coil skeleton 111 up end one side fixedly connected with connects public end pin 114, coil skeleton 111 down end one side fixedly connected with coil pin 113, coil pin 113 of the last lower extreme of coil skeleton 111 of magnetic circuit mechanism 1 can ensure that winding 112's top end lead wire directly twines on coil skeleton 111, direct tin sticky welding, the other end pin on the skeleton is used for connecting public end pin 114 simultaneously, product coil binding post directly adopts the quick plug of connector, this innovative advantage is favorable to coil production to realize automation equipment wire winding, winding 112 top end is headed, the tin sticky.

In FIG. 5; base 2 upper end is equipped with two major loop connecting portion 23, coil pack 11 outer wall cover is equipped with coil guard shield 13, magnetic circuit mechanism 1 one side is equipped with and connects the public end of public end pin 114 matched with connector and moulds shell 14, design control circuit's connector on the magnetic circuit part of product, the connector adopts the design theory of connector, change traditional control circuit erection joint mode and position, it is poor to avoid traditional product's installation reliability, and solve major loop and control circuit's creepage distance, and change traditional product coil and wrap up insulating mode with the PET sticky tape, this be suitable for novel design and coil on coil guard shield 13 draw forth the public end of foot complex connector and mould shell 14, this guard shield promotes insulating, compressive strength between coil and the yoke.

The utility model discloses a theory of operation and use flow: the magnetic circuit mechanism 1 is used for protecting the coil component 11, the magnetic circuit mechanism 1 is fixedly connected with the base 2 through screws, when the upper cover shell 3 is installed, only the upper end face of the base 2 needs to be pressed, at the moment, the upper cover shell 3 deforms due to thin walls, at the moment, the upper cover inclined plane fixture block 32 inclines outwards, when the upper cover inclined plane fixture block 32 is matched with the matched fixture block 21, the upper cover inclined plane fixture block 32 elastically resets and is matched and clamped with the matched fixture block 21, because the upper cover shell 3 can be influenced by external influences such as temperature, the elasticity of the upper cover shell 3 is influenced, and the upper cover shell 3 cannot be completely reset, therefore, after the upper cover shell 3 is installed, the upper cover shell 3 is further limited through the locking sliding sleeve 5, so that the upper cover inclined plane fixture block 32 is always matched with the matched fixture block 21 in a clamped mode, and the lower cover inclined plane 61 of the cover shell 6 is clamped with the convex block 12 in a clamped mode, at the moment, and then restriction lower housing 6 takes place elastic deformation, so the mode of spiro union is adopted, because lower housing 6 may receive the influence of gravity, the effect that the spiro union mode made locking spiro union sleeve 7 can be stable to lower housing 6 play the restriction this moment, through this method can not appear upper housing 3 and lower housing 6 warp or the not enough condition that causes the crack of resilience force, under the purpose that improves loading and unloading speed, improved the stability of joint.

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 described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Low pressure direct current contactor includes magnetic circuit mechanism (1) and installs inside coil pack (11) of magnetic circuit mechanism (1), end fixedly connected with base (2) on magnetic circuit mechanism (1), magnetic circuit mechanism (1) bottom surface can be dismantled and be connected with down housing (6), base (2) up end can be dismantled and be connected with last housing (3), go up and install load switching subassembly (4), its characterized in that in housing (3): a matching clamping block (21) is fixedly connected to the upper end face of the base (2), an upper cover inclined plane clamping block (32) matched with the matching clamping block (21) is fixedly connected to the bottom face of the inner wall of the upper cover shell (3), and a locking sliding sleeve (5) used for further limiting the upper cover inclined plane clamping block (32) is slidably connected to the outer wall of the upper cover inclined plane clamping block (32);

base (2) one side fixedly connected with is used for mounting panel (22) of installation, base (2) with mounting panel (22) integrated into one piece, magnetic circuit mechanism (1) fixedly connected with protruding piece (12), lower housing (6) inner wall top fixedly connected with protruding piece (12) joint complex lower cover inclined plane fixture block (61), lower housing (6) outer wall spiro union have be used for right lower cover inclined plane fixture block (61) is further spacing locking spiro union sleeve pipe (7).

2. The low-voltage direct current contactor according to claim 1, wherein: the inner wall of the locking sliding sleeve (5) is attached to the outer wall of the upper housing (3), and the bottom surface of the locking sliding sleeve (5) is in contact with the upper end surface of the base (2).

3. The low-voltage direct current contactor according to claim 1, wherein: the inner wall of the locking sliding sleeve (5) is fixedly connected with a rubber layer used for increasing the sliding friction force between the locking sliding sleeve (5) and the upper housing (3).

4. The low-voltage direct current contactor according to claim 1, wherein: the outer wall of the lower cover shell (6) and a part, corresponding to the lower cover inclined surface clamping block (61), of the lower cover shell are smooth surfaces, and the upper end face of the locking threaded sleeve (7) is flush with the upper end face of the lower cover shell (6).

5. The low-voltage direct current contactor according to claim 1, wherein: and reinforcing ribs (221) are arranged on the outer wall of the mounting plate (22).

6. The low-voltage direct current contactor according to claim 1, wherein: and a convex shell (31) used for increasing an internal cavity is arranged on the upper end surface of the upper cover shell (3).

7. The low-voltage direct current contactor according to claim 1, wherein: coil pack (11) are by coil skeleton (111) and around two windings (112) of coil skeleton (111) outer wall are constituteed, public end is inserted foot (114) in coil skeleton (111) up end one side fixedly connected with connection, coil skeleton (111) lower terminal surface one side fixedly connected with coil is inserted foot (113).

8. The low-voltage direct current contactor according to claim 7, wherein: the outer wall of the coil assembly (11) is sleeved with a coil shield (13), and one side of the magnetic circuit mechanism (1) is provided with a connector male end plastic shell (14) matched with the connecting male end pin (114).

9. The low-voltage direct current contactor according to claim 1, wherein: two main loop connecting parts (23) are arranged at the upper end of the base (2).