CN201828405U

CN201828405U - Plug for acquiring knocking signals

Info

Publication number: CN201828405U
Application number: CN 201020200373
Authority: CN
Inventors: 王立
Original assignee: Shanghai W-Ibeda High Tech Deve Co Ltd
Current assignee: According to Shanghai science and technology group Limited by Share Ltd
Priority date: 2010-05-21
Filing date: 2010-05-21
Publication date: 2011-05-11
Anticipated expiration: 2020-05-21

Abstract

The utility model relates to a plug for acquiring knocking signals, which is provided with a shell (1) consisting of an upper cover (4) and a lower cover (2); a signal transmitting end hole (1k) is formed at the rear end surface (1a) of the shell; torsion springs (9) are respectively installed between the upper cover and the lower cover at the two side surfaces of the front end of the shell and are connected with locking hook pieces (5) with bent hooks (5a); the bent hooks are in an oppositely-arranged state; a square insulating body (6) is embedded into the front end surface of the shell; the insulating body is provided with a probe (3); and a probe rod (3a) of the probe is positioned in the shell. In the plug, the structure is simple, the reliable connection can be ensured when knocking of an engine cylinder is detected, plugging and unplugging can be realized rapidly for the plug, and the service life is not influenced.

Description

A kind of plug of gathering detonation signal

Technical field

The utility model relates to a kind of plug, relates in particular to the plug that engine is detected the collection detonation signal that has crotch of usefulness.

Background technology

In the past, when motor car engine is tested, needed to gather the detonation signal of cylinder.Because engine is in the dry run state during test, can produce vibrations, therefore,, usually required to connect especially reliably for relevant connector in order to guarantee the accuracy of acquired signal.

Traditional detonation signal to cylinder detects the plug of usefulness, or adopts interference to connect, or adopts locator meams such as pin to realize the purpose that prevents that plug from getting loose.

And Engine Block Test belongs to on-line testing, plug is connected on the engine or unloads the operation of plug and have man-hour from fast requirement from engine, and above-mentioned connected mode in the past needs the time of very long plug plug all unavoidablely, if the plug that adopts interference to connect, then owing to connect too tight, the destruction that is easy to cause plug when the plug plug influences the serviceable life of plug, thereby production cost is risen.

The plug that is connected with engine if adopt locator meams such as pin has then influenced the reliable connection of plug, thereby has influenced the accuracy of collection detonation signal owing to the vibrations of engine when pinking detects to cylinder.

For this reason, need a kind ofly can to realize quick-speed plug that positive connection is used repeatedly and the plug that can not wear and tear satisfies the needs of frequent test collection combustion knock signal.

Summary of the invention

In view of the problem of above-mentioned existence, the purpose of this utility model is to provide a kind of can realize plug fast, reliably connect, use repeatedly and can not damage and can improve the plug of the collection detonation signal of combustion knock signals collecting accuracy.

For achieving the above object, the plug of collection detonation signal of the present utility model, has the housing (1) that constitutes by loam cake (4) and lower cover (2), the rear end face of this housing (1a) is formed with signal transmission stomidium (1k), between the described loam cake of the front end two sides of described housing and described lower cover, be separately installed with torsion spring (9), on each described torsion spring, be connected with the latch hook member (5) that has crotch (5a), and described crotch is in the state of relative configuration, front end face embedding at described housing has square insulator (6), and on this insulator, be equipped with the surface be the probe of wear-resistant metal material (3), the shank of this probe (3a) is in the described housing.

In said structure, also on described insulator, be provided with the groove that is used to distinguish both forward and reverse directions.

In addition, the front end undulate of described probe; Described signal transmission stomidium also can be round taper hole.

Description of drawings

Fig. 1 is the outward appearance front view of the plug of expression collection detonation signal of the present utility model.

Fig. 2 is the vertical view of biopsy cavity marker devices among Fig. 1.

Fig. 3 is the stereoscopic figure of the plug of expression collection detonation signal of the present utility model.

Symbol description

1---housing, 2---lower cover, 3---probe, 4---loam cake, 5---latch hook member, 6---insulator, 9---torsion spring

Embodiment

Below, the primary structure and the advantage thereof of the plug of collection detonation signal of the present utility model are described with reference to the accompanying drawings.

As shown in Figure 1, the plug of collection detonation signal of the present utility model has the housing 1 that is made of loam cake 4 and lower cover 2.In addition, as shown in Figure 3, the rear end face 1a of this housing 1 is formed with signal transmission stomidium 1k, and as shown in Figure 2, between the loam cake 4 of the front end two sides of housing 1 (not shown) and lower cover 2, be separately installed with torsion spring 9, on each torsion spring 9, be connected with the latch hook member 5 that has crotch 5a, crotch 5a is in the state of relative configuration, front end face embedding at housing 1 has square insulator 6, and on this insulator 6, be equipped with the surface be the probe 3 of wear-resistant metal material, the shank 3a (asking for an interview Fig. 2) of this probe 3 is in the housing 1.

In the present embodiment, the above-mentioned probe 3 that penetrates in insulator 6 is two, as shown in Figure 1 and Figure 2, but also can be one.

In said structure of the present utility model, as shown in Figure 1, also can on insulator 6, be provided with the groove 6a that is used to distinguish both forward and reverse directions, plug of the present utility model so that the tester pegs graft fast.This groove 6a can be square groove or circular groove, so long as can distinguish both forward and reverse directions, the groove part of Any shape can, in the present embodiment, the groove 6a that Fig. 1 shows is shaped as trapezoidal.

In addition, in the present embodiment, above-mentioned insulator 6 is square, waits other shape but also can be circle.

In addition, 3 front ends of the probe in the said structure (top) undulate.Signal transmission stomidium 1k also can make round taper hole.

Utilize plug of the present utility model, before cylinder is detected, manually with the latch hook member 5 of this plug under housing 1 side pressure, then as shown in Figure 2, its insulator 6 is inserted on the detonation signal sensor connector t of measured workpiece, after the connection, unclamps hand, latch hook member 5 is under the pressure of torsion spring 9, the crotch 5a of latch hook member 5 just blocks the lug boss t1 of detonation sensor joint, under situation about not being destroyed, even engine luggine, plug can not get loose yet, and realizes reliably connecting.Because have the friction except probe 3 and measured workpiece in connection procedure, all only there is pressure in remainder, and probe 3 surfaces are wear-resistant metal materials, so can not wear and tear, can use repeatedly.

In the time will pulling up plug of the present utility model, just plug of the present utility model can be pulled up as long as depress latch hook member 5 (having removed the crotch 5a of latch hook member 5 and engaging of lug boss t1 this moment) again.

Thus, adopt plug of the present utility model, can realize being connected and disconnection of detonation sensor joint of plug and tested engine rapidly, realize fast insert-pull, connect under nondestructive situation and can not get loose, connect reliably, it is wear-resisting that each parts is withstand voltage, can be not impaired easily, comparing serviceable life in the past, product prolongs.

Claims

1. plug of gathering detonation signal has the housing (1) that is made of loam cake (4) and lower cover (2), and the rear end face of this housing (1a) is formed with signal transmission stomidium (1k), and this plug is characterised in that,

Between the described loam cake of the front end two sides of described housing and described lower cover, is separately installed with torsion spring, on each described torsion spring, is connected with the latch hook member (5) that has crotch (5a), and described crotch is in the state of relative configuration,

Embedding at the front end face of described housing has square insulator (6), and the surface is installed on this insulator is the probe of wear-resistant metal material, and the shank of this probe is in the described housing.

2. the plug of collection detonation signal as claimed in claim 1 is characterized in that, is provided with the groove that is used to distinguish both forward and reverse directions on described insulator.

3. the plug of collection detonation signal as claimed in claim 1 is characterized in that, the front end undulate of described probe.

4. as the plug of each described collection detonation signal in the claim 1～3, it is characterized in that described signal transmission stomidium is a round taper hole.