CN213092934U

CN213092934U - PPTC overcurrent protection element convenient for mounting and processing

Info

Publication number: CN213092934U
Application number: CN202021572179.5U
Authority: CN
Inventors: 兰盛良; 兰兴荣
Original assignee: Xiamen Dunte Electronic Technology Co ltd
Current assignee: Xiamen Dunte Electronic Technology Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-04-30
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a PPTC overcurrent protection component convenient to paste dress processing, concretely relates to overcurrent protection component field, including PPTC overcurrent protection component, two conducting films, two insulating films and support, two the conducting film laminating is in overcurrent protection component's surface, two the insulating film is corresponding to the surface of laminating in two conducting films. The utility model discloses a be provided with positioning mechanism, when PPTC overcurrent protection component is in the dress state, PPTC overcurrent protection component is located the inside of laminating standing groove, the locating plate is injectd its position, and the spring is in the shrink state, can not cause the injury to it because of the elasticity of spring yet, when the increase along with the live time, utilize adjusting screw to adjust the stopper in the inside position of spout, thereby make this PPTC overcurrent protection component be hugged closely all the time to the locating plate, guarantee that it can not appear shifting in the dress operation, and then guarantee PPTC overcurrent protection component's dress quality.

Description

PPTC overcurrent protection element convenient for mounting and processing

Technical Field

The utility model relates to an overcurrent protection component field, concretely relates to PPTC overcurrent protection component convenient to paste dress processing.

Background

The PPTC is mainly used for short circuit and overload protection of electronic equipment, and has a restorable function compared with the traditional fuse, so the PPTC is also called a self-restoring fuse, the PPTC is mainly composed of polymer resin and conductive materials, the PPTC shows extremely low resistance value under normal working conditions, the circuit performance is not affected basically, when abnormal current occurs or the environmental temperature is increased, the resistance value is increased rapidly, and a high-impedance state is shown, so that the abnormal current is limited to flow through the PPTC element, and the process is called as 'action'; when the fault is eliminated, the PPTC element automatically restores to a low-resistance state, and the circuit can return to a normal working state; the working principle of PPTC is as follows: the PPTC is composed of crystalline polymer and conductive particles; under normal operation, the crystalline polymer tightly binds the conductive particles in a crystalline structure to form a low-impedance conductive path; the existing PPTC surface mounting structure mainly comprises a polymer thermistor PPTC chip, wherein an upper conductive film and a lower conductive film are respectively pressed on one layer of upper and lower end faces of the PPTC chip 1, an upper insulating layer and a lower insulating layer are respectively adhered to the end faces of the upper conductive film and the lower conductive film, a left electrode and a right electrode are U-shaped and are respectively buckled at the left end and the right end of the PPTC surface mounting structure, and the structure is mainly realized by a process mode of circuit board processing, such as: drilling, browning, etching, etc.;

the prior art has the following defects: when the traditional PPTC overcurrent protection element is mounted, the upper conductive film and the lower conductive film are connected and attached with a PPTC chip to cause deviation due to displacement in the placement process of the PPTC overcurrent protection element.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a PPTC overcurrent protection component convenient to paste dress processing should possess advantages such as paste dress accuracy and laminating compactness to solve the above-mentioned weak point in the technique.

In order to achieve the above object, the present invention provides the following technical solutions: the PPTC overcurrent protection element convenient for mounting and processing comprises a PPTC overcurrent protection element, two conductive films, two insulating films and a support, wherein the two conductive films are attached to the outer surfaces of the PPTC overcurrent protection element, the two insulating films are correspondingly attached to the outer surfaces of the two conductive films, an attaching placing groove is formed in the support, the PPTC overcurrent protection element is positioned in the attaching placing groove, and a positioning mechanism is arranged between the inner walls of the placing groove and the PPTC overcurrent protection element;

the positioning mechanism comprises a positioning plate, one side of the positioning plate is attached to a PPTC (polymeric positive temperature coefficient) overcurrent protection element, two springs are installed on the other side of the positioning plate, two ends of each spring are fixedly connected with the side of the positioning plate and the inner wall of the attaching placement groove respectively, first fixing blocks are installed at the positioning plate and two ends of each spring, second fixing blocks are installed on the inner wall of the attaching placement groove and the positions corresponding to the first fixing blocks, a sliding block is installed at the bottom of one end of each second fixing block, a sliding groove is formed in one side, close to the second fixing block, of each first fixing block, the sliding block is inserted into the corresponding sliding groove, a limiting block is installed inside the corresponding sliding groove, an adjusting screw is installed on one side of the limiting block, the adjusting screw penetrates.

Preferably, the number of the positioning mechanisms is four, and the four positioning mechanisms are symmetrically arranged in pairs at the center of the horizontal axial section of the attaching placement groove.

Preferably, the sliding block is of a T-shaped structure, and the sliding groove is of a T-shaped structure.

Preferably, the limiting block is located on one side, away from the PPTC overcurrent protection element, of the slider, and the limiting block is attached to the slider, and the limiting block is slidably connected to the inside of the sliding groove.

Preferably, one end of the adjusting screw rod is rotatably connected with the limiting block through a bearing, and the other end of the adjusting screw rod is provided with a rotating handle.

Preferably, the side of the conductive film close to the insulating film is provided with a plurality of protrusions, the side of the insulating film close to the conductive film is provided with a plurality of recesses corresponding to the plurality of protrusions of the conductive film, and the protrusions of the conductive film are inserted into the recesses of the insulating film.

In the technical scheme, the utility model provides a technological effect and advantage:

1. through being provided with positioning mechanism, when the PPTC overcurrent protection component is in pasting the dress state, the PPTC overcurrent protection component is located the inside of laminating the standing groove, the locating plate is injectd its position, and the spring is in the shrink state, can not cause the injury to it because of the elasticity of spring yet, increase along with the live time, utilize adjusting screw to adjust the position of stopper in the spout inside, thereby make the locating plate hug closely this PPTC overcurrent component all the time, guarantee that it can not appear shifting in pasting the dress operation, and then guarantee the subsides dress quality of PPTC overcurrent protection component.

2. Through being the setting of many places arch with the one side that the conducting film is close to the insulating film, the insulating film is close to one side of conducting film, corresponds the many places arch department of conducting film and is provided with the depressed part, and like this when the insulating film to the conducting film laminating, both laminating compacter, the connection is more firm, helps strengthening its life.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1 according to the present invention.

Fig. 3 is an enlarged view of a portion B of fig. 2 according to the present invention.

Description of reference numerals:

1PPTC overcurrent protection element, 2 conductive film, 3 insulating film, 4 supports, 5 attaching placement grooves, 6 positioning mechanisms, 61 positioning plates, 62 springs, 63 first fixing blocks, 64 second fixing blocks, 65 sliding blocks, 66 sliding grooves, 67 limiting blocks, 68 adjusting screws and 69 rotating handles.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The utility model provides a PPTC overcurrent protection component convenient to paste dress processing as shown in figures 1-3, including PPTC overcurrent protection component 1, two conducting films 2, two insulating films 3 and support 4, be provided with support 4, it pastes the dress to place PPTC overcurrent protection component in order to make things convenient for, and then simplify current process flow, two conducting films 2 laminate in overcurrent protection component 1's surface, two insulating films 3 correspond the surface of laminating in two conducting films 2, laminating standing groove 5 has been seted up to support 4's inside, PPTC overcurrent protection component 1 is located the inside of laminating standing groove 5, be provided with positioning mechanism 6 between the inner wall of standing groove 5 and between PPTC overcurrent protection component 1;

the positioning mechanism 6 comprises a positioning plate 61, one side of the positioning plate 61 is attached to the PPTC overcurrent protection element 1, the other side of the positioning plate 61 is provided with two springs 62, two ends of each spring 62 are fixedly connected to the side of the positioning plate 61 and the inner wall of the attachment placement groove 5, the positioning plate 61 and two ends are provided with first fixing blocks 63, the positions corresponding to the first fixing blocks 63 on the inner wall of the attachment placement groove 5 are provided with second fixing blocks 64, the bottom of one end of each second fixing block 64 is provided with a sliding block 65, one side of the first fixing block 63 close to the second fixing block 64 is provided with a sliding chute 66, the sliding block 65 is inserted into the sliding chute 66, the inside of the sliding chute 66 is provided with a limiting block 67, one side of the limiting block 67 is provided with an adjusting screw 68, the adjusting screw 68 penetrates through the sliding chute 66, and the adjusting screw 68 is in threaded, PPTC overcurrent element 1 is located the inside of laminating standing groove 5, locating plate 61 is injectd its position, and spring 62 is in the shrink state, can not cause the injury to it because of spring 62's elasticity yet, when the increase along with live time, the gap increase between locating plate 61 and the PPTC overcurrent protection element 1, it is more weak to cause the laminating location effect, rotatory adjusting screw 68 drives stopper 67 and moves inside spout 66 this time, thereby make this PPTC overcurrent protection element 1 be hugged closely all the time to locating plate 61, guarantee that it can not appear shifting in pasting the dress operation, and then guarantee PPTC overcurrent protection element 1's subsides dress quality.

The number of the positioning mechanisms 6 is four, and the four positioning mechanisms 6 are symmetrically arranged in pairs at the center position of the horizontal axial section of the attaching placement groove 5, so that the positioning effect of the PPTC overcurrent protection element 1 can be enhanced.

The slide block 65 has a T-shaped structure, and the slide groove 66 has a T-shaped structure, so that the slide block 65 does not separate from the inside of the slide groove 66 when the slide block 65 slides in the inside of the slide groove 66.

The limiting block 67 is located on one side of the slider 65 away from the PPTC overcurrent protection element 1, the limiting block 67 is attached to the slider 65, and the limiting block 67 is slidably connected to the inside of the sliding groove 66, so that the limiting block 67 drives the slider 65 to move inside the sliding groove 66.

One end of the adjusting screw 68 is rotatably connected with the limiting block 67 through a bearing, and the other end of the adjusting screw 68 is provided with a rotating handle 69, wherein the rotating handle 69 is provided for applying an acting force to the adjusting screw 68 conveniently.

One side of the conductive film 2 close to the insulating film 3 is provided with a plurality of protrusions, one side of the insulating film 3 close to the conductive film 2 is provided with a plurality of recesses corresponding to the plurality of protrusions of the conductive film 2, and the protrusions of the conductive film 2 are inserted into the recesses of the insulating film 3, so that when the insulating film 3 is attached to the conductive film 2, the attaching is more compact, the connection is more stable, and the service life of the conductive film is prolonged.

This practical theory of operation: when the PPTC overcurrent protection element 1 is in a mounted state, the PPTC overcurrent protection element 1 is located inside the mounting placement groove 5, the positioning plate 61 defines the position thereof, the spring 62 is in a contracted state, and the spring 62 does not hurt the PPTC overcurrent protection element 1 due to elasticity of the spring 62, when the usage time increases, a gap between the positioning plate 61 and the PPTC overcurrent protection element 1 increases, so that the mounting positioning effect is weaker, at this time, the rotating adjusting screw 68 drives the limiting block 67 to move inside the sliding groove 66, and therefore the positioning plate 61 can be always attached to the PPTC overcurrent protection element 1.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The PPTC overcurrent protection element convenient for mounting processing comprises a PPTC overcurrent protection element (1), two conductive films (2), two insulating films (3) and a support (4), wherein the two conductive films (2) are attached to the outer surface of the PPTC overcurrent protection element (1), the two insulating films (3) are correspondingly attached to the outer surfaces of the two conductive films (2), an attaching placing groove (5) is formed in the support (4), the PPTC overcurrent protection element (1) is located in the attaching placing groove (5), and the PPTC overcurrent protection element mounting structure is characterized in that: a positioning mechanism (6) is arranged between the inner walls of the placing grooves (5) and the PPTC overcurrent protection element (1);

the positioning mechanism (6) comprises a positioning plate (61), one side of the positioning plate (61) is attached to the PPTC overcurrent protection element (1), two springs (62) are installed on the other side of the positioning plate (61), two ends of each spring (62) are fixedly connected with the side face of the positioning plate (61) and the inner wall of the attaching placement groove (5) respectively, first fixing blocks (63) are installed on the positioning plate (61) and two ends of each spring, second fixing blocks (64) are installed on the inner wall of the attaching placement groove (5) and positions corresponding to the first fixing blocks (63), a sliding block (65) is installed at the bottom of one end of each second fixing block (64), a sliding groove (66) is formed in one side, close to each second fixing block (64), of each first fixing block (63), each sliding block (65) is inserted into each sliding groove (66), and a limiting block (67) is installed inside each sliding groove (66, an adjusting screw (68) is installed on one side of the limiting block (67), the adjusting screw (68) penetrates through the sliding groove (66), and the adjusting screw (68) is connected to the inside of the first fixing block (63) in a threaded mode.

2. The PPTC overcurrent protection element for convenient surface mount processing according to claim 1, wherein: the number of the positioning mechanisms (6) is four, and the positioning mechanisms (6) are symmetrically arranged in pairs at the center of the horizontal axial section of the attaching placing groove (5).

3. The PPTC overcurrent protection element for convenient surface mount processing according to claim 1, wherein: the sliding block (65) is of a T-shaped structure, and the sliding groove (66) is of a T-shaped structure.

4. The PPTC overcurrent protection element for convenient surface mount processing according to claim 1, wherein: the limiting block (67) is located on one side, away from the PPTC overcurrent protection element (1), of the sliding block (65), the limiting block (67) is attached to the sliding block (65), and the limiting block (67) is connected to the inside of the sliding groove (66) in a sliding mode.

5. The PPTC overcurrent protection element for convenient surface mount processing according to claim 1, wherein: one end of the adjusting screw rod (68) is rotatably connected with the limiting block (67) through a bearing, and the other end of the adjusting screw rod (68) is provided with a rotating handle (69).

6. The PPTC overcurrent protection element for convenient surface mount processing according to claim 1, wherein: the side of the conductive film (2) close to the insulating film (3) is provided with a plurality of bulges, the side of the insulating film (3) close to the conductive film (2) is provided with a plurality of recesses corresponding to the bulges of the conductive film (2), and the bulges of the conductive film (2) are inserted into the recesses of the insulating film (3).