JPH0548379Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to grommets for electrical equipment.

BACKGROUND OF THE INVENTION Electrical equipment generally has an electrical connector receptacle on the outside of the machine case or cover in order to obtain an electrical connection with an external device, and a connector is inserted into the receptacle in the proper orientation. A guide device for inserting the machine, and a grommet to provide watertightness between the case or cover and the insertion port are provided, and electrical parts such as circuit boards and batteries placed inside the machine case or cover are installed. A fixing device or the like is provided to keep it fixed. In conventional electrical equipment, such guide devices, grommets, fixing devices, etc. are made as separate parts, and each is assembled and placed separately using mounting tools such as screws and nuts, and adhesives. Therefore, there were disadvantages such as a large number of parts and a time-consuming manufacturing and assembly process.

Furthermore, accidents such as connecting the connector in the wrong direction and damaging the electrical equipment are likely to occur.

Problems to be Solved by the Invention The present invention was made to eliminate the disadvantages of the conventional technology as described above, and includes a connector insertion guide device, watertight sealing of cases and covers, and fixing of parts. To provide a grommet that can perform all the functions of the device and can be easily assembled without using fittings such as screws or nuts.

Means for Solving the Problems That is, the grommet for an electrical device according to the present invention has a peripheral groove that fits into an opening formed in a removable cover of the electrical device, and a fixed side electrical connector portion that fits into the peripheral groove. a hole, a recess formed on the side of the hole for guiding another detachable connector portion connected to the fixed connector portion, and a recess formed in a portion of the grommet adjacent to the fixed connector portion for electrical connection. A receiving part that holds a component and a buffer part that buffers and holds another electrical component in a pinched manner with an elastic covering member that covers an inner surface of a case part of the electrical device that is sealed with the cover are integrally formed. It is characterized by a configuration having.

Function: Therefore, the grommet according to the present invention can water-tightly seal the opening of the fixed part of an electrical device without using any fittings such as screws or nuts, and can buffer and support various electrical components to suitably hold them. This makes it possible to properly connect connector parts to each other with a single part.

Embodiments Next, the present invention will be described based on embodiments shown in the drawings.

The illustrated embodiment is an example in which the present invention is applied to an internal combustion engine device used as a drive source for a brush cutter or the like. As shown in FIG.
An ordinary recoil type manual starter 2 and an automatic starter 3 are used as starters for starting the engine case 4.
The automatic starter 3 is provided within the electric motor 5.
A rechargeable battery 6 for supplying power to the electric motor 5 is arranged in a lower part of a case part 7 provided below the engine case 4. This case part 7 is open at its front face 8, and the battery 6 is inserted into the lower part of the case part 7 through this front face 8, and the front face 8 has a removable cover 9.
Closed by. The cover 9 has an opening 10 above the battery 6, and a grommet 11 is attached to the opening 10.

The grommet 11 is made of a suitable elastic material such as rubber, and as shown in FIG.
The opening 10 is fitted and fixed around the opening 10, and the opening 10 is sealed watertightly. The grommet 11 has a front face shape as shown in FIG. 3, and has a square hole 13 formed therein, into which a socket 14, which is the fixed side portion of the electrical connector, is fitted in a watertight manner. ing. Furthermore, a recess 15 with one side open to the outside is formed in the upper part of the square hole 13. A plug 16, which is a removable part of an electrical connector electrically connected to an external device, is inserted into the socket 14 from the outside, and a locking claw 17 provided at the top of the plug 16 engages the grommet 11.
into the recess 15 of the socket 14, and engages with the protrusion 18 formed on the upper part of the socket 14, and the plug 1
6 is locked in the socket 14 in such a way that it cannot be accidentally removed. Note that even if an attempt is made to insert the plug 16 into the socket 14 with the locking claw 17 facing in a direction other than upward, the locking claw 17 will not engage with the grommet 1.
The plug 16 can be prevented from being inserted by hitting the peripheral wall of the plug 1, thereby preventing improper connection. The locking pawl 17 is disengaged from the projection 18 by pressing down on its outer end 17', and the plug 16 can be withdrawn from the socket 14.

Furthermore, the grommet 11 is connected to the square hole 1.
A receiving portion 19 is formed at the inner end of the lower surface of the grommet 11 , and one end of the circuit board 20 to which electrical components such as the socket 14 and the relay 26 disposed inside the case portion 7 are mounted is connected to the grommet 11 . It is held in the receiving part 19 of. The other end of the circuit board 20 is inserted into a groove 23 of an elastic covering member 22 made of rubber or the like fitted into a protrusion 21 formed on the inner surface of the case portion 7, and is buffered and held.

Furthermore, the grommet 11 integrally forms a buffer portion 24 extending downwardly from its lower inner end. The buffer portion 24 extends along the inner surface of the cover 9 and is formed in a plate-like shape having a conical cross section, and has two bottom portions in pressure contact with the inner surface of the cover 9 and a central protruding portion thereof. is pressed against one end of the battery 6, and the cover 9 and the battery 6
The battery 6 is pressed and held by acting as a buffer between the two.

The elastic covering member 22 covers the inner surface of the case portion 7 as shown in FIG.
The flange portion 22' provided along the cover 9
The case portion 7 is sealed in a watertight manner by being sandwiched between the battery 6 and the battery 6, and the case portion 7 is sealed in a watertight manner, and the mounting portion of the generating coil 25 on the engine case 4 side is also sealed, thereby serving as a buffer for the battery 6.

Effects of the invention With the structure of the invention explained above, the invention has the following effects:
The one-piece grommet provides a completely water-tight seal for electrical equipment without the use of screws, nuts, or other fittings, prevents improper connection of connectors, and prevents improper connection of various electrical components. This has the advantage of reducing the number of parts and making manufacturing and assembly easier and cheaper.

[Brief explanation of the drawing]

FIG. 1 is a cutaway sectional view of essential parts showing an embodiment in which the present invention is applied to an internal combustion engine device, FIG. 2 is an enlarged sectional view of essential parts of the embodiment of FIG. 1, and FIG. 3 is an essential part of the embodiment of FIG. FIG. 6...Battery, 9...Cover, 10...Opening, 1
1... Grommet, 12... Peripheral groove, 13... Square hole, 14... Socket, 15... Recess, 16
...Plug, 17...Latching claw, 19...Receptacle,
20...Circuit board, 24...Buffer part.

Claims (1)

[Scope of utility model registration request] A grommet 11 for an electrical device, the grommet having a circumferential groove 12 that fits into an opening 10 formed in a removable cover 9 of the electrical device, and a hole 13 into which a fixed electrical connector portion 14 is inserted; A recess 15 is formed on the side of the hole to guide the removable connector parts 16 and 17 connected to the fixed connector part, and a recess 15 is formed in a part of the grommet adjacent to the fixed connector part to guide the electrical component. 2
0, and an elastic covering member 22 that covers the inner surface of the case portion 7 of the electrical device that is sealed with the cover 9, and a buffer portion 24 that holds another electrical component 6 in a pinched manner. A grommet for an electrical device, characterized in that the grommet is integrally formed with the grommet.