CN110907183A

CN110907183A - Positioning and mounting clamp for knock sensor

Info

Publication number: CN110907183A
Application number: CN201911155653.6A
Authority: CN
Inventors: 马小飞; 陈华兵; 王攀; 李龙; 黄涛; 谢书文
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-03-24
Anticipated expiration: 2039-11-22
Also published as: CN110907183B

Abstract

The invention relates to a positioning and mounting clamp for a knock sensor, which comprises a clamp body and is characterized in that: the clamp body is cylindrical, a limiting notch penetrating through the cylinder is formed in one side of the clamp body, and a plurality of bayonets are formed in one end portion of the clamp body. A plurality of bayonets on the anchor clamps body tip respectively with a plurality of strengthening ribs one-to-one block on the engine, a plurality of the strengthening rib is located around the mounting hole of establishing the knock sensor on the engine. The orientation of the wiring harness connector of the knock sensor can be fixed, so that wiring harness insertion is facilitated, and the assembly quality is ensured; the knock sensor mounting device has the advantages that the mounting operation of the knock sensor can be simplified, the knock sensor can be mounted in place at one time, the assembly time is shortened, and the assembly cost is reduced.

Description

Positioning and mounting clamp for knock sensor

Technical Field

The invention relates to an engine, in particular to a positioning and mounting clamp for a knock sensor.

Background

The knock sensor is installed between engine cylinder bodies, for example, a four-cylinder engine, is installed between two cylinders and three cylinders, or is installed between one cylinder and two cylinders, or is installed between three cylinders and 4 cylinders, and is used for measuring the jitter degree of the engine and adjusting the ignition advance angle when the engine knocks. The knock sensor is used as an important signal acquisition component of an automobile engine, and the assembly quality of the knock sensor directly influences the electric control performance of the engine. In order to ensure the signal acquisition function of the knock sensor in the running process of the engine, the assembly process has no quality risk, namely: the installation is accurate, and with correct grafting of pencil, moment do not attenuate. Due to the structural particularity of the knock sensor, the knock sensor cannot be fixed in the same direction after a fixing bolt is screwed down, so that the wiring harness is difficult to plug.

The traditional mode adopts artifical support, fixes its direction with the hand when screwing up fixing bolt, leads to following risk easily:

(1) the manual fixing direction cannot be unified, so that the wiring harness is difficult to insert;

(2) when in screwing, an operator can only hold the screwing tool with one hand, and the screwing tool is easy to fall off in the screwing process and damages other parts of the engine;

(3) the installation cannot be completed in place at one time, and the installation beat is long due to repeated adjustment.

Therefore, it is desirable to develop a positioning and mounting jig for a knock sensor to solve the existing problems.

CN 104165646A discloses a sensor mounting clamp, which comprises a connecting piece, a cushion block and a sucker, wherein the top of the connecting piece is provided with a fixing mechanism; the top of the cushion block is fixedly connected to the bottom of the connecting piece; the sucking disc is clamped between the connecting piece and the cushion block in a sealing mode, and the cushion block is located in an inner cavity of the sucking disc. This sensor sectional fixture, can be fast through the sucking disc will place the anchor clamps of sensor and fix to the object that awaits measuring, simultaneously, also be convenient for take off anchor clamps after the test finishes. In addition, after the clamp is adsorbed on the object to be tested through the sucking disc, the cushion block is in contact with the object to be tested, and the sensor is in rigid connection with the object to be tested, so that the test stability is guaranteed. The provided mounting clamp has no limitation on material selection, does not need to consider the problem of the material of the object to be measured, and has wider application range. But is not suitable for the installation of the knock sensor.

Disclosure of Invention

The invention aims to provide a positioning and mounting clamp for a knock sensor, which can fix the orientation of a wire harness joint of the knock sensor, is convenient for wire harness insertion and ensures the assembly quality; the knock sensor mounting device has the advantages that the mounting operation of the knock sensor can be simplified, the knock sensor can be mounted in place at one time, the assembly time is shortened, and the assembly cost is reduced.

The invention relates to a positioning and mounting clamp for a knock sensor, which comprises a clamp body and is characterized in that: the clamp body is cylindrical, a limiting notch penetrating through the cylinder is formed in one side of the clamp body, and a plurality of bayonets are formed in one end portion of the clamp body.

Furthermore, a plurality of bayonets on the end of the clamp body are respectively correspondingly clamped with a plurality of reinforcing ribs on the engine one by one, and the plurality of reinforcing ribs are positioned around the mounting hole of the knock sensor arranged on the engine.

Further, the diameter of the inner circle of the clamp body is slightly larger than that of the outer circle of the knock sensor, and the knock sensor is matched with the clamp body; the knock sensor has a harness connector that defines a direction through a limit notch on the clamp body.

The invention can meet the requirement that the installation quality of the knock sensor is consistent with the fixed orientation of the wire harness joint. In the use, only need the manual work with its cover on the knock sensor, through bayonet socket and the engine strengthening rib on the alignment anchor clamps, can realize the orientation fixed function that the knock sensor pencil connects. When the fixing bolt is screwed down, an operator can hold the screwing tool by two hands, and the screwing quality is ensured. The problem of the detonation sensor in the installation process that the wiring harness joint can not fix orientation, the operation only can be held by one hand when screwing is solved, and the assembly efficiency and the assembly quality are improved. The novel transmission device is simple to operate in the using process, convenient to assemble, position and disassemble, reliable in performance, stable in transmission connection, high in working efficiency, strong in practicability and the like.

Drawings

FIG. 1 is an axial schematic view of the present invention;

FIG. 2 is a schematic illustration of the present invention in cooperation with a knock sensor;

FIG. 3 is an exploded view of a knock sensor mounted on an engine utilizing the present invention;

FIG. 4 is a schematic illustration of a knock sensor mounted on an engine utilizing the present invention.

In the figure: 1-a clamp body, 11-a limiting notch and 12-a bayonet;

2-engine, 21-mounting hole, 22-reinforcing rib;

3-knock sensor, 31-harness connector.

Detailed Description

The invention is further described with reference to the accompanying drawings and examples.

Referring to fig. 1 and 2, a positioning and mounting fixture for a knock sensor is shown, which comprises a fixture body 1 and is characterized in that: the clamp body 1 is cylindrical, a limiting notch 11 penetrating through the cylinder is formed in one side of the clamp body 1, and a plurality of bayonets 12 are formed in one end portion of the clamp body 1. This location sectional fixture is overall structure. The engine cylinder body is fixed on the engine by a reinforcing rib of the engine cylinder body through a bayonet design. The limiting notch is used for limiting the wire harness joint direction of the knocking sensor, and the orientation consistency is guaranteed. In the screwing process, the wire harness connector is guaranteed not to rotate through the limiting effect of the limiting notch.

Referring to fig. 3 and 4, the plurality of bayonets 12 on the one end portion of the clip body 1 are respectively engaged with the plurality of ribs 22 on the engine 2 in a one-to-one correspondence, and the plurality of ribs 22 are located around the mounting hole 21 of the knock sensor 3 provided on the engine 2. The positioning and mounting clamp of the knock sensor is fixed by using a reinforcing rib on the engine, and an operator can hold a tightening tool with both hands to mount the knock sensor, so that the tightening quality is ensured; and the phenomenon that the screwing tool is easy to fall off and other parts of the engine are damaged by collision can be avoided.

The inner circle diameter of the clamp body 1 is slightly larger than the outer circle diameter of the knock sensor 3, and the knock sensor 3 is matched with the clamp body 1; the knock sensor 3 is provided with a wire harness joint 31, and the wire harness joint 31 is limited in direction by a limiting notch 11 on the clamp body 1. The wiring harness joint direction of the knock sensor is uniform, and the wiring harness is convenient to plug.

Claims

1. The utility model provides a location sectional fixture for knock sensor, includes anchor clamps body (1), characterized by: the clamp is characterized in that the clamp body (1) is cylindrical, a limiting notch (11) penetrating through the cylinder is formed in one side of the clamp body (1), and a plurality of bayonets (12) are formed in one end of the clamp body (1).

2. The positioning and mounting fixture for the knock sensor as set forth in claim 1, wherein: a plurality of bayonets (12) on the tip of anchor clamps body (1) respectively with a plurality of strengthening rib (22) one-to-one block on engine (2), a plurality of strengthening rib (22) are located and are established around mounting hole (21) of knock sensor (3) on engine (2).

3. The positioning and mounting fixture for the knock sensor as set forth in claim 2, wherein: the inner circle diameter of the clamp body (1) is slightly larger than the outer circle diameter of the knock sensor (3), and the knock sensor (3) is matched with the clamp body (1); the detonation sensor (3) is provided with a wire harness joint (31), and the wire harness joint (31) limits the direction through a limiting notch (11) on the clamp body (1).