CN216217407U

CN216217407U - Electric horn meeting EMC and insulation standards

Info

Publication number: CN216217407U
Application number: CN202122656354.XU
Authority: CN
Inventors: 任中良; 郑利国
Original assignee: Wenzhou Zhongye Traffic Electrical Appliance Co ltd
Current assignee: Wenzhou Zhongye Traffic Electrical Appliance Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-05
Anticipated expiration: 2031-11-02

Abstract

The utility model provides an electric horn conforming to EMC and insulation standards, which comprises a shell, an insert insulating seat, a TVS tube, two inserts and a bracket, wherein the shell comprises a front cover and a rear cover which are connected, the two inserts are fixed on the outer side of the rear cover through the insert insulating seat, the TVS tube is inserted in the insert insulating seat and positioned between the two inserts, and the bracket is fixed on the rear cover. The inserted sheet with pass through between the back lid the inserted sheet insulator seating is insulated, prevents the inserted sheet with back lid forms the return circuit and then conducts on the support to avoid whole car insulation resistance to reach international requirement. Wherein TVS pipe carries out better interference killing feature in the EMC test, consequently this application adopted the electric horn of external TVS pipe to and do not change current product technology, reduce the equipment cost, can also carry out automatic equipment, in order to satisfy EMS standard requirement.

Description

Electric horn meeting EMC and insulation standards

Technical Field

The utility model relates to the field of electric horns, in particular to an electric horn meeting EMC and insulation standards.

Background

The electric horn is a sounding warning device on an automobile and is used for reminding vehicles and pedestrians to play a role in warning. After production, the electric horn needs to be correspondingly tested to meet the use requirements meeting the standards, wherein the electric bicycle can be normally ridden after a water spraying and wading test according to the national standard GB17761-2018 electric bicycle safety technical specification, and the insulation resistance value is larger than or equal to 1M omega. However, the existing horn is not specially designed for the whole vehicle test mode, so that the horn cannot meet the national standard requirement.

In addition, the electric horn still needs to accord with EMC (GB/T21437.2 standard), and when the electric horn worked, the coil was released the energy as resistive element, and the energy of release conducts through the wire to disturb other functional unit of whole car, common interference embodies: the headlight flickers when the horn sounds, the turn light flickers when the horn sounds, the screen flickers when the horn sounds, and the like. With the development of electric bicycles, the electronic functions carried in the future can be richer, and the EMC test requirements can be gradually improved to automobile level, even to III level.

In view of the above, there is a need for an electrical horn that meets the national standard insulation performance requirements and also meets the EMC test requirements.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides the electric horn which meets the national standard insulation performance requirements and simultaneously meets the EMC test requirements.

The utility model provides an electric horn conforming to EMC and insulation standards, which comprises a shell, an insert insulating seat, a TVS tube, two inserts and a bracket, wherein the shell comprises a front cover and a rear cover which are connected, the two inserts are fixed on the outer side of the rear cover through the insert insulating seat, the TVS tube is inserted in the insert insulating seat and is positioned between the two inserts, and the bracket is fixed on the rear cover.

According to the preferable technical scheme, the insert insulating seat comprises two insert fixing parts and a tube fixing part, the tube fixing part is connected between the two insert fixing parts, each insert is respectively inserted into one insert fixing part, and the TVS tube is inserted into the tube fixing part.

As a preferable technical solution, the insert fixing member includes a semicircular bottom plate and an arc side plate extending along an arc portion of the semicircular bottom plate, so that the insert is inserted and fixed on the semicircular bottom plate from a linear portion direction of the semicircular bottom plate.

As a preferred technical scheme, a stop block is arranged on one side, away from the semicircular bottom plate, of the arc-shaped side plate, so that the inserting piece is kept between the semicircular bottom plate and the stop block.

As a preferred technical scheme, a pipe groove is formed in the pipe fixing piece, so that the pipe body of the TVS pipe is inserted into the pipe groove.

As a preferred technical scheme, each semicircular bottom plate is provided with a pin groove communicated with the tube groove, so that the pins of the TVS tubes are located in the pin grooves.

As a preferred technical scheme, two clamping blocks are arranged on the pipe fixing piece, and the two clamping blocks are respectively arranged on two axial sides of the TVS pipe.

As the preferred technical scheme, the novel solar cell module also comprises two rivets, wherein each rivet penetrates through the inserting piece and the inserting piece insulating seat respectively so as to rivet the inserting piece and the inserting piece insulating seat on the rear cover together.

Preferably, the bracket includes a housing fixing portion and a frame contact portion, the housing fixing portion is fixed to the rear cover, and the frame contact portion is molded with an insulating member.

As a preferred technical scheme, a positioning hole is formed in the frame contact part.

Compared with the prior art, the technical scheme has the following advantages:

the inserted sheet with pass through between the back lid the inserted sheet insulator seating is insulated, prevents the inserted sheet with back lid forms the return circuit and then conducts on the support to avoid whole car insulation resistance to reach international requirement. The pins of the TVS tube are positioned between the inserting pieces and the inserting piece insulating seats, and the inserting pieces and the inserting piece insulating seats are fixed together by rivets on the rear cover, so that the design is optimized, the assembly cost is reduced, and automatic assembly can be realized. In addition, the frame contact part of the bracket connected with the frame is injected with an insulating part, so that the frame is not required to be additionally insulated. Wherein TVS pipe carries out better interference killing feature in the EMC test, consequently this application adopted the electric horn of external TVS pipe to and do not change current product technology, reduce the equipment cost, can also carry out automatic equipment, in order to satisfy EMS standard requirement.

The utility model is further described with reference to the following figures and examples.

Drawings

FIG. 1 is a schematic diagram of an EMC and insulation compliant electrical horn according to the present invention;

FIG. 2 is a schematic view of the structure of the insert insulating base and the TVS tube assembly of the present invention;

fig. 3 is a schematic structural view of the insert insulating base according to the present invention.

In the figure: 100 shells, 110 front covers, 120 rear covers, 200 insert insulating seats, 210 insert fixing parts, 211 semicircular bottom plates, 212 arc side plates, 2121 notches, 213 stoppers, 220 pipe fixing parts, 221 pipe grooves, 222 pin grooves, 223 clamping blocks, 300TVS pipes, 310 pipe bodies, 320 pins, 400 inserts, 500 rivets, 600 brackets, 610 shell fixing parts, 620 frame contact parts, 621 positioning holes and 630 insulating parts.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

As shown in fig. 1 to 3, the electric horn conforming to EMC and insulation standards includes a housing 100, an insert insulating base 200, a TVS tube 300, two inserts 400 and a bracket 600, wherein the housing 100 includes a front cover 110 and a rear cover 120 connected to each other, the two inserts 400 are fixed to the outer side of the rear cover 120 through the insert insulating base 200, the TVS tube 300 is inserted into the insert insulating base 200 and located between the two inserts 400, and the bracket 600 is fixed to the rear cover 120.

Insert 400 with pass through between the back lid 120 the insert insulator seat 200 is insulating, prevents insert 400 with back lid 120 forms the return circuit and then conducts on the support 600 to avoid whole car insulation resistance to reach international requirement. Wherein TVS manages and carries out better interference killing feature in the EMC test, consequently this application adopted external TVS pipe 300's electric horn to and do not change current product technology, reduce the equipment cost, can also carry out automatic equipment, in order to satisfy EMS standard requirement.

As shown in fig. 2 and 3, the tab insulating base 200 includes two tab fixing members 210 and a tube fixing member 220, the tube fixing member 220 is connected between the two tab fixing members 210, each tab 400 is respectively inserted into one tab fixing member 210, and the TVS tube 300 is inserted into the tube fixing member 220.

Inserted sheet 400 adopts the mode of pegging graft to be fixed in on the inserted sheet mounting 210, and TVS pipe 300 adopts the mode of pegging graft to be fixed in on the pipe mounting 220, not only effectively prevent inserted sheet 400 with TVS pipe 300's pine takes off, still effectively promotes the packaging efficiency.

Referring to fig. 1 and 3, the insert sheet fixing member 210 includes a semicircular bottom plate 211 and a circular arc side plate 212 formed to extend along a circular arc portion of the semicircular bottom plate 211, so that the insert sheet 400 is inserted from a linear portion direction of the semicircular bottom plate 211 and fixed on the semicircular bottom plate 211.

The insert 400 is inserted into the semicircular bottom plate 211, and has a shape identical to that of the semicircular bottom plate 211, and is semicircular, so that the part can be engaged with the semicircular bottom plate 211, and the circular arc side plate 212 surrounds the part.

Preferably, a stopper 213 is disposed on a side of the arc-shaped side plate 212 away from the semicircular bottom plate 211, so that the insert 400 is held between the semicircular bottom plate 211 and the stopper 213, and the fixing performance of the insert 400 is improved.

Referring to fig. 3, the stopper 213 is formed to extend along the inner edge of the circular arc-shaped side plate 212, but the TVS tube 300 is not mounted, that is, only a portion of the inner edge of the circular arc-shaped side plate 212 extends to form the stopper 213.

As shown in fig. 2 and 3, the tube fixing member 220 is formed with a tube slot 221, so that the tube body 310 of the TVS tube 300 is inserted into the tube slot 221.

The pipe groove 221 is semicircular, so that the cylindrical pipe body 310 is partially inserted into the pipe groove 221, and the other part is exposed to the outside.

Referring to fig. 3, each of the semicircular bottom plates 211 is formed with a pin groove 222 communicating with the tube groove 221, so that the pin 320 of the TVS tube 300 is located in the pin groove 222. Therefore, the tube body 310 and the pins 320 of the TVS tube 300 have corresponding fixing positions, and the fixing effect is improved. It can be seen that the pin slot 222 is located between the insert 400 and the insert insulating base 200, so that the tube body 310 of the TVS tube 300 is firstly inserted into the tube slot 221, the pin 320 is placed in the pin slot 222, the insert 400 is inserted into the semicircular bottom plate 211, and then the insert is locked by the rivet 500, which not only improves the assembly efficiency, but also effectively reduces the cost.

Specifically, the electric horn meeting EMC and insulation standards further comprises two rivets 500, wherein each rivet 500 is respectively inserted into the insert 400 and the insert insulation seat 200 so as to rivet the two on the rear cover 120 together. Wherein the insert 400 is a copper insert.

With continued reference to fig. 3, the arc-shaped side plate 212 is formed with a notch 2121 communicating with the pipe slot 221, so as to facilitate the installation of the TVS pipe 300.

As shown in fig. 2 and 3, the tube fixing member 220 is provided with two locking blocks 223, and the two locking blocks 223 are respectively disposed at two axial sides of the TVS tube 300, so as to further improve the fixing ability of the TVS tube 300.

As shown in fig. 1, the bracket 600 includes a housing fixing portion 610 and a frame contacting portion 620, which are adjacent to each other, the housing fixing portion 610 is fixed to the rear cover 120, and the frame contacting portion 620 is injection-molded with an insulating member 630, so that a separate insulating design for the frame is not required.

The bracket 600 may have a plate-like structure and be made of metal (e.g., iron). The housing fixing part 610 may be fixed at the center of the rear cover 120 by bolts, etc., the frame contact part 620 is used for being connected to a frame, and the insulation of the bracket 600 from the frame is achieved due to the injection molding of the insulation member 630 on the outer surface of the frame contact part 620.

The insulating member 630 may be made of plastic such as nylon, and may be injection molded, so as to improve strength and facilitate production. In addition, the frame contact portion 620 is provided with a positioning hole 621 for matching with a fastener to fix the bracket 600 on the frame, wherein the number, size and position of the positioning hole 621 can be designed according to actual positioning requirements.

The production method of the stent 600 comprises the following steps: 1. the bracket is formed using a stamped sheet. 2. And (4) carrying out electrophoresis on the bracket formed by stamping. 3. And an insulating part is injected at the frame contact part of the bracket. 4. And (7) warehousing. The production process of the support 600 is simple and convenient, and the production line efficiency cannot be influenced.

In summary, the insertion piece 400 and the rear cover 120 are insulated by the insertion piece insulating base 200, so that the insertion piece 400 and the rear cover 120 are prevented from forming a loop and further being conducted to the support 600, and the insulating resistance of the whole vehicle is prevented from meeting the international requirement. The pins of the TVS tube 300 are located between the insert 400 and the insert insulation seat 200, and the insert 400 and the insert insulation seat 200 are fixed together on the rear cover 120 by using the rivet 500, so that the design is optimized, the assembly cost is reduced, and the automatic assembly can be realized. In addition, the frame contact part 620 of the bracket 600 connected with the frame is injected with an insulating member 630, so that the frame is not required to be additionally insulated. Wherein TVS pipe 300 carries out better interference killing feature in EMC test, consequently this application adopted external TVS pipe 300's electric horn to and do not change current product technology, reduce the equipment cost, can also carry out automatic equipment, in order to satisfy EMS standard requirement.

The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the scope of the present invention is not limited by the embodiments, i.e. all equivalent changes or modifications made in the spirit of the present invention are still within the scope of the present invention.

Claims

1. The utility model provides an electric horn that accords with EMC and insulation standard, a characterized in that, includes a casing (100), an inserted sheet insulating seat (200), a TVS pipe (300), two inserted sheets (400) and support (600), casing (100) are including a protecgulum (110) and a back lid (120) that are connected, two inserted sheet (400) pass through inserted sheet insulating seat (200) are fixed in back lid (120) outside, TVS pipe (300) peg graft in on inserted sheet insulating seat (200), and be located two between inserted sheet (400), support (600) are fixed in on back lid (120).

2. The electrical horn compliant with EMC and insulation standards of claim 1 wherein the insert insulator housing (200) comprises two insert fasteners (210) and a tube fastener (220), the tube fastener (220) is connected between the two insert fasteners (210), each insert (400) is respectively inserted into one insert fastener (210), and the TVS tube (300) is inserted into the tube fastener (220).

3. The electrical horn compliant with EMC and insulation standards of claim 2, wherein the insert sheet holder (210) comprises a semicircular bottom plate (211) and a circular arc side plate (212) formed to extend along a circular arc portion of the semicircular bottom plate (211) so that the insert sheet (400) is inserted from a direction of a straight portion of the semicircular bottom plate (211) and fixed on the semicircular bottom plate (211).

4. An electrical horn compliant with EMC and insulation standards as in claim 3 characterized in that the side of the arc side plate (212) away from the semi-circular base plate (211) is provided with a stop (213) to keep the insert (400) between the semi-circular base plate (211) and the stop (213).

5. The electrical horn compliant with EMC and insulation standards of claim 3, wherein the tube fixing member (220) has a tube slot (221) formed therein, so that the body (310) of the TVS tube (300) is inserted into the tube slot (221).

6. The electrical horn compliant with EMC and insulation standards of claim 5, wherein each of the semicircular bottom plates (211) is formed with a pin groove (222) communicating with the pipe groove (221) so that the pin (320) of the TVS pipe (300) is located in the pin groove (222).

7. The electric horn compliant with EMC and insulation standards of claim 5, wherein two locking blocks (223) are provided on the tube fixing member (220), and the two locking blocks (223) are respectively provided on both sides of the TVS tube (300) in the axial direction.

8. The electrical horn compliant with EMC and insulation standards of claim 1 further comprising two rivets (500), each rivet (500) passing through the insert (400) and the insert insulator seat (200) respectively to rivet the two together on the rear cover (120).

9. The electrical horn compliant with EMC and insulation standards of claim 1, wherein the bracket (600) comprises a housing fixing portion (610) and a frame contact portion (620) which are adjacent, the housing fixing portion (610) is fixed on the rear cover (120), and the frame contact portion (620) is injection molded with the insulating member (630).

10. The electrical horn compliant with EMC and insulation standards of claim 9, wherein the frame contact portion (620) has a positioning hole (621) formed therein.