CN219068171U

CN219068171U - Power filter with wire clamping function

Info

Publication number: CN219068171U
Application number: CN202223453261.8U
Authority: CN
Inventors: 李应杰; 李濛; 刘家伟; 段晓波; 崔敏; 李瑾
Original assignee: Chengdu Hongming Electronics Co Ltd
Current assignee: Chengdu Hongming Electronics Co Ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-05-23
Anticipated expiration: 2032-12-23

Abstract

The utility model discloses a power filter with a wire clamping function, which comprises a shell, a filtering element arranged in the shell and two wire clamping assemblies, wherein the outer walls of two ends of the shell are respectively provided with a plurality of wiring terminals; the wire clamping assembly comprises two connecting rods, a supporting plate, a pressing plate and locking screws, one ends of the two connecting rods are respectively connected with the outer walls of two opposite sides of the corresponding end of the shell, the other ends of the two connecting rods are respectively connected with two ends of the supporting plate, pressing plate through holes are respectively formed in two ends of the pressing plate, supporting plate screw holes are respectively formed in two ends of the supporting plate, and the two locking screws are respectively connected with the two supporting plate screw holes after penetrating through the two pressing plate through holes. When the utility model is used, the lead can be reliably clamped and fixed, so that the lead cannot move, the connector between the lead and the wiring terminal cannot be disconnected or loosened, and the problem that the normal use of the power filter is influenced because the lead is pulled is avoided.

Description

Power filter with wire clamping function

Technical Field

The present disclosure relates to power filters, and particularly to a power filter with wire clamping function.

Background

The power filter is a device which is formed by effectively filtering a frequency point of a specific frequency or a frequency outside the frequency point in a power line through a filter circuit formed by filter elements (generally comprising a capacitor, an inductor and a resistor) to obtain a power signal of the specific frequency or eliminate the power signal after the specific frequency, and is also called as an 'power electromagnetic interference (EMI) filter', or an 'EMI power filter', and is a passive bidirectional network, one end of which is used for connecting a power supply and the other end of which is used for connecting a load. For example, in a dc regulated power supply, a power filter is used to reduce as much as possible the ac component in a pulsating dc voltage, and to maintain the dc component, so that the ripple coefficient of the output voltage is reduced and the waveform becomes smoother.

The conventional power filter generally comprises a housing and a filter element arranged in the housing, wherein the two ends of the housing are respectively provided with a wiring terminal, and the wiring terminal is connected with a wire when the conventional power filter is used, so that the conventional power filter has the following defects: the structure of centre gripping is carried out to the wire, and the direct wire and wiring end are connected when using, and if the wire is pulled after the connection, then can directly transmit the pulling force for the joint, probably lead to wire joint disconnection or not hard up, influence power filter's normal use.

In addition, the traditional power filter only depends on the shell to dissipate heat, so that the heat dissipation effect is poor, and when the power filter works for a long time in a high-temperature environment, the internal heat of the power filter cannot be rapidly discharged, and the internal filter element of the power filter is easily damaged.

Disclosure of Invention

The present utility model has been made to solve the above problems, and an object of the present utility model is to provide a power filter having a wire clamping function.

The utility model realizes the above purpose through the following technical scheme:

the power filter with the wire clamping function comprises a shell and a filtering element arranged in the shell, wherein a plurality of wiring terminals are respectively arranged on the outer walls of two ends of the shell; the structure of each wire clamping assembly is as follows: the wire clamping assembly comprises two connecting rods, a supporting plate, a pressing plate and locking screws, wherein one ends of the two connecting rods are respectively connected with outer walls of two opposite sides of one corresponding end of the shell, the other ends of the two connecting rods are respectively connected with two ends of the supporting plate, the pressing plate is mutually parallel to and mutually close to the supporting plate, pressing plate through holes are respectively formed in two ends of the pressing plate, supporting plate screw holes are respectively formed in two ends of the supporting plate, and the two locking screws respectively penetrate through the two pressing plate through holes and then are connected with the two supporting plate screw holes.

Preferably, in order to facilitate more stable clamping of the wire, in each wire clamping assembly, a plurality of grooves corresponding to each other are respectively formed in a side surface of the support plate, which is close to the pressing plate, and a side surface of the pressing plate, which is close to the support plate.

Preferably, in order to facilitate adjustment of the spacing between the supporting plate and the corresponding wiring terminal of the pressing plate and the housing to better meet the use requirements, each of the wire clamping assemblies, the connecting rod comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is arranged in a hole at one end of the second connecting rod and can axially move and is fixedly connected through a first connecting screw, the other end of the first connecting rod is connected with two ends of the supporting plate, and the other end of the second connecting rod is inserted into a sleeve on the corresponding outer wall of the housing and is fixedly connected through a second connecting screw.

Preferably, in order to improve the heat dissipation effect, the power filter with the wire clamping function further includes a fan, a fan mounting housing, a heat dissipation frame, heat dissipation fins and a bottom plate, wherein the fan mounting housing is mounted on a top plate of the housing and is communicated with the interior of the housing, the fan is mounted on the fan mounting housing and is simultaneously communicated with the interior and the exterior of the housing, the top of the heat dissipation frame is mounted on the bottom outer wall of the housing and is in surface-to-surface contact, the bottom plate is connected with the lower part of the heat dissipation frame, and a plurality of heat dissipation fins which are parallel to each other are mounted between the top of the heat dissipation frame and the bottom plate at intervals.

Preferably, in order to further improve the heat dissipation effect, strip-shaped heat dissipation holes are formed in the outer walls of the two opposite sides of the shell.

The utility model has the beneficial effects that:

according to the utility model, the wire clamping assemblies are respectively arranged at the two ends of the shell, so that the wire can be reliably clamped and fixed when in use, so that the wire cannot move, and even if the wire is pulled, the joint between the wire and the wiring terminal cannot be disconnected or loosened, thereby avoiding the problem that the normal use of the power filter is influenced because the wire is pulled; through installing the fan on the roof of casing, install heat dissipation frame and fin in the bottom of casing, improved power filter's radiating effect, do benefit to and normally work for a long time in high temperature environment.

Drawings

Fig. 1 is a schematic perspective view of a power filter with a wire clamping function according to the present utility model, wherein the perspective view is a top view;

fig. 2 is a schematic diagram of a second perspective structure of the power filter with wire clamping function according to the present utility model, which is a bottom view.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 and 2, the power filter with wire clamping function according to the present utility model includes a housing 12, a filter element (not visible in the figure) disposed in the housing 12, and two wire clamping assemblies disposed outside the housing 12, wherein a plurality of terminals 7 are respectively disposed on outer walls of both ends of the housing 12, the terminals 7 are copper sheets and are mounted on outer walls of both ends of the housing 12 through insulators 8, and the two wire clamping assemblies are respectively mounted on both ends of the housing 12; the structure of each wire clamping assembly is as follows: the wire clamping assembly comprises two connecting rods (a first connecting rod 1 and a second connecting rod 5 which are described below), a supporting plate 4, a pressing plate 3 and locking screws 2, wherein one ends of the two connecting rods are respectively connected with two opposite side outer walls of one corresponding end of a shell 12, the other ends of the two connecting rods are respectively connected with two ends of the supporting plate 4, the pressing plate 3 and the supporting plate 4 are parallel to each other and are close to each other, pressing plate through holes are respectively formed in two ends of the pressing plate 3, supporting plate screw holes are respectively formed in two ends of the supporting plate 4, and the two locking screws 2 respectively penetrate through the two pressing plate through holes and then are connected with the two supporting plate screw holes.

As shown in fig. 1 and 2, the present utility model also discloses the following various more optimal specific structures:

in order to facilitate more stable clamping of the wires (not shown in the drawings), a plurality of grooves 6 are respectively provided on a side surface of the support plate 4 adjacent to the pressing plate 3 and a side surface of the pressing plate 3 adjacent to the support plate 4 in a one-to-one correspondence manner.

In order to facilitate adjustment of the spacing between the corresponding terminals of the support plate 4 and the press plate 3 and the housing 12 to better meet the requirements of use, in each of the wire clamping assemblies, the connecting rod includes a first connecting rod 1 and a second connecting rod 5, one end of the first connecting rod 1 is disposed in a hole at one end of the second connecting rod 5 and can move axially and be fixedly connected through a first connecting screw (not labeled in the figure), the other end of the first connecting rod 1 is connected with two ends of the support plate 4, and the other end of the second connecting rod 5 is inserted into a sleeve 13 disposed on a corresponding outer wall of the housing 12 and is fixedly connected through a second connecting screw (not labeled in the figure).

In order to improve the heat dissipation effect, the power filter with the wire clamping function further comprises a fan 9, a fan mounting shell 10, a heat dissipation frame 18, heat dissipation fins 17 and a bottom plate 16, wherein the fan mounting shell 10 is mounted on the top plate 14 of the shell 12 and is communicated with the interior of the shell 12, the fan 9 is mounted on the fan mounting shell 10 and is simultaneously communicated with the interior and the exterior of the shell 12, the top of the heat dissipation frame 18 is mounted on the bottom outer wall of the shell 12 and is in surface-to-surface contact, the bottom plate 16 is connected with the lower part of the heat dissipation frame 18, and a plurality of heat dissipation fins 17 which are parallel to each other are mounted between the top of the heat dissipation frame 18 and the bottom plate 16 at intervals.

To further enhance the heat dissipation effect, strip-shaped heat dissipation holes 15 are provided on the outer walls of the opposite sides of the housing 12.

Fig. 1 and 2 also show mounting plates 11 provided at both ends of the bottom of the housing 12, which are of conventional construction.

As shown in fig. 1 and 2, when in use, the locking screw 2 is rotated to enlarge the gap between the pressing plate 3 and the supporting plate 4, a plurality of wires (not shown in the figure) respectively pass through the gap between the pressing plate 3 and the supporting plate 4 and are respectively placed in the corresponding grooves 6, then the plurality of wires are connected with the terminals 7, and then the locking screw 2 is rotated reversely to reduce the gap between the pressing plate 3 and the supporting plate 4 until the plurality of wires are stably and reliably clamped between the pressing plate 3 and the supporting plate 4, so that the clamping and fixing function is realized, and the joint between the wires and the terminals 7 is not broken or loosened even if the wires are pulled. In the working process, the fan 9 blows external cold air into the shell 12 to cool the filter element, or the fan 9 pumps out heat in the shell 12 along with the air, so that the purpose of heat dissipation is achieved.

The above embodiments are only preferred embodiments of the present utility model, and are not limiting to the technical solutions of the present utility model, and any technical solution that can be implemented on the basis of the above embodiments without inventive effort should be considered as falling within the scope of protection of the patent claims of the present utility model.

Claims

1. The utility model provides a power filter with wire centre gripping function, includes the casing and arranges in filter element in the casing, the both ends outer wall of casing is equipped with a plurality of wiring ends, its characterized in that respectively: the power filter with the wire clamping function further comprises two wire clamping assemblies, wherein the two wire clamping assemblies are respectively arranged at two ends of the shell; the structure of each wire clamping assembly is as follows: the wire clamping assembly comprises two connecting rods, a supporting plate, a pressing plate and locking screws, wherein one ends of the two connecting rods are respectively connected with outer walls of two opposite sides of one corresponding end of the shell, the other ends of the two connecting rods are respectively connected with two ends of the supporting plate, the pressing plate is mutually parallel to and mutually close to the supporting plate, pressing plate through holes are respectively formed in two ends of the pressing plate, supporting plate screw holes are respectively formed in two ends of the supporting plate, and the two locking screws respectively penetrate through the two pressing plate through holes and then are connected with the two supporting plate screw holes.

2. The power filter with wire clamping function of claim 1, wherein: in each wire clamping assembly, a plurality of grooves which are in one-to-one correspondence are respectively arranged on one side surface, close to the pressing plate, of the supporting plate and one side surface, close to the supporting plate, of the pressing plate.

3. The power filter with wire clamping function of claim 1, wherein: in each wire clamping assembly, the connecting rod comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is arranged in a hole at one end of the second connecting rod and can axially move and is fixedly connected through a first connecting screw, the other end of the first connecting rod is connected with two ends of the supporting plate, and the other end of the second connecting rod is inserted into a sleeve arranged on the corresponding outer wall of the shell and is fixedly connected through a second connecting screw.

4. A power filter with wire clamping function according to claim 1, 2 or 3, characterized in that: the power filter with the wire clamping function further comprises a fan, a fan installation shell, a heat dissipation frame, heat dissipation fins and a bottom plate, wherein the fan installation shell is installed on a top plate of the shell and is communicated with the inside of the shell, the fan is installed on the fan installation shell and is simultaneously communicated with the inside and the outside of the shell, the top of the heat dissipation frame is installed on the outer wall of the bottom of the shell and is in surface-to-surface contact, the bottom plate is connected with the lower portion of the heat dissipation frame, and a plurality of heat dissipation fins which are parallel to each other are installed between the top of the heat dissipation frame and the bottom plate at intervals.

5. The power filter with wire clamping function of claim 4, wherein: and strip-shaped heat dissipation holes are formed in the outer walls of the two opposite sides of the shell.