Engine knock sensor mounting mechanism

Abstract

The utility model discloses an engine knock sensor installation mechanism, and relates to the engine knock sensor installation device technology field, the engine knock sensor installation mechanism comprises a sleeve assembly and an extension screwing assembly, the sleeve assembly is used for realizing sensor positioning installation, and the extension screwing assembly is used for carrying out long distance screwing operation on a fixing bolt of a sensor. According to the utility model, through the arrangement of the sleeve assembly and the extension screwing assembly, the installation angle of the knock sensor can be limited through the sleeve assembly, the problem that the installation angle of the knock sensor deviates stably in the traditional installation process is effectively solved, and meanwhile, the fixing bolt of the knock sensor can be screwed remotely through the extension screwing assembly, so that the knock sensor is prevented from being damaged. And the operation space is larger, the operation difficulty is reduced, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine knock sensor mounting device technical field, specifically a kind of engine knock sensor mounting mechanism. BACKGROUND

[0002] Knock sensor converts the mechanical vibration of engine into electrical signal, and transmits to electronic control module (ECU), and ECU adjusts ignition time in time according to the signal received, to avoid the occurrence of knock. Knock is due to pressure disorder in engine combustion process, it can be caused by early ignition time, fuel quality and other factors, which can cause engine damage. Therefore, knock sensor plays a vital role in preventing engine damage.

[0003] At present, during the assembly process of engine knock sensor, there are small batch production or repair, manual installation angle cannot be guaranteed and bolt fastening cannot be locked, there are problems of low installation efficiency, low qualified rate, large damage to knock sensor and high operation difficulty, based on this, provide a kind of engine knock sensor mounting mechanism. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in order to solve the problem in the above background, provide a kind of engine knock sensor mounting mechanism.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of engine knock sensor mounting mechanism, including sleeve assembly, extension screwing assembly, the sleeve assembly is used to realize sensor positioning installation, the extension screwing assembly is used to carry out long-distance screwing operation to the fixed bolt of sensor;

[0006] The sleeve assembly includes sleeve main body, telescopic slot, through hole, limiting storage groove, limiting lug and antiskid rubber block;

[0007] The telescopic slot, through hole and limiting storage groove are sequentially distributed in the inner side of sleeve main body from top to bottom, and the telescopic slot penetrates the top of sleeve main body, the limiting storage groove penetrates the bottom and one side of sleeve main body, the limiting storage groove is used to provide positioning storage space for sensor, the antiskid rubber block is glued and fixed on the side wall of the opening of limiting storage groove, and the friction force between antiskid rubber block and sensor outer wall is used to provide anti-falling resistance for sensor;

[0008] The limiting lug is integrally formed on the bottom of sleeve main body outside and extends to the lower side of sleeve main body, the structure layout of limiting lug is matched with the concave-convex shape of the shell of sensor installation position, the limiting lug and the concave-convex surface of the shell of sensor installation position are clamped, to realize sensor positioning orientation installation.

[0009] As a further scheme of the utility model: the extension screwing assembly includes an extension rod, an internal hexagonal seat, a fixed bearing, an annular cover plate, a telescopic spring conversion joint and a compression spring.

[0010] The internal hexagonal seat is fixed at the top end of the extension rod, the fixed bearing is fixed at the outer side of the internal hexagonal seat and close to the bottom end of the extension rod, the telescopic spring conversion joint is connected to the bottom end of the extension rod, a socket head matched with a sensor fixing bolt is connected through the telescopic spring conversion joint, the extension rod and the telescopic spring conversion joint are rotated by inserting a wrench into the internal hexagonal seat to drive the socket head to rotate, and the rotation of the socket head can realize the rotation of the sensor fixing bolt.

[0011] The annular cover plate is sleeved at the outer side of the extension rod and distributed at the top of the fixed bearing, the annular cover plate is covered on the upper surface of the sleeve body and fixedly connected with the sleeve body through bolts, and the fixed bearing and the telescopic spring conversion joint are distributed at the inner side of the telescopic groove.

[0012] The compression spring is distributed at the inner side of the telescopic groove, and the upper and lower ends of the compression spring are tightly attached to the lower surface of the fixed bearing and the bottom end of the inner wall of the telescopic groove respectively.

[0013] As a further scheme of the utility model: the diameter of the hole diameter in the middle of the annular cover plate is greater than the outer diameter of the extension rod and the internal hexagonal seat and less than the outer diameter of the fixed bearing.

[0014] As a further scheme of the utility model: the outer diameter of the outer ring of the fixed bearing is matched with the inner diameter of the telescopic groove, the outer diameter of the telescopic spring conversion joint is less than the inner diameter of the through hole, and the diameter of the compression spring is greater than the inner diameter of the through hole.

[0015] As a further scheme of the utility model: the sleeve body, the telescopic groove, the through hole, the limiting storage groove and the limiting protruding block are integrally formed through an injection molding process, and the upper surface of the sleeve body is formed with a threaded hole for screwing in a bolt.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] By setting the sleeve assembly and the extension screwing assembly, the installation angle of the knock sensor can be limited through the sleeve assembly, the installation angle deviation during the traditional installation of the knock sensor is effectively solved, meanwhile, the fixed bolt of the knock sensor can be screwed at a distance through the extension screwing assembly, the operation space is larger, the operation difficulty is reduced, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a structural schematic view of the utility model;

[0019] Fig. 2 It is a structural top view of the utility model;

[0020] Fig. 3 The sectional view of the sleeve assembly of the utility model.

[0021] In the figure: 1, sleeve assembly; 101, sleeve main body; 102, telescopic groove; 103, through hole; 104, limiting receiving groove; 105, limiting protrusion; 106, anti-skid rubber block; 2, extension screwing assembly; 201, extension rod; 202, internal hexagonal seat; 203, fixed bearing; 204, annular cover plate; 205, telescopic spring conversion joint; 206, compression spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figs. 1-3 In the embodiments of the utility model, an engine knock sensor mounting mechanism comprises a sleeve assembly 1 and an extension screwing assembly 2, the sleeve assembly 1 is used for realizing sensor positioning installation, and the extension screwing assembly 2 is used for remotely screwing operation on the fixing bolt of the sensor.

[0024] The sleeve assembly 1 comprises a sleeve main body 101, a telescopic groove 102, a through hole 103, a limiting receiving groove 104, a limiting protrusion 105 and an anti-skid rubber block 106.

[0025] The telescopic groove 102, the through hole 103 and the limiting receiving groove 104 are sequentially arranged on the inner side of the sleeve main body 101 from top to bottom, the telescopic groove 102 penetrates the top of the sleeve main body 101, the limiting receiving groove 104 penetrates the bottom and one side of the sleeve main body 101, the limiting receiving groove 104 is used for providing a positioning receiving space for the sensor, and the anti-skid rubber block 106 is glued and fixed on the side walls on both sides of the opening on the side of the limiting receiving groove 104, and the friction force between the anti-skid rubber block 106 and the outer wall of the sensor is used for providing anti-falling resistance for the sensor.

[0026] The limiting protrusion 105 is integrally formed on the bottom of the outer side of the sleeve main body 101 and extends to below the sleeve main body 101, the structural layout of the limiting protrusion 105 is matched with the concave-convex shape of the shell at the sensor mounting position, the limiting protrusion 105 is clamped with the concave-convex surface of the shell at the sensor mounting position, and the sensor positioning orientation installation is realized.

[0027] The extension screwing assembly 2 comprises an extension rod 201, an inner hexagonal seat 202, a fixed bearing 203, an annular cover plate 204, a telescopic spring conversion joint 205, and a compression spring 206;

[0028] The inner hexagonal seat 202 is fixed to the top end of the extension rod 201, the fixed bearing 203 is fixed to the outer side of the inner hexagonal seat 202 and close to the bottom end of the extension rod 201, the telescopic spring conversion joint 205 is connected to the bottom end of the extension rod 201, and a socket head matching the sensor fixing bolt is connected through the telescopic spring conversion joint 205. The extension rod 201 and the telescopic spring conversion joint 205 are rotated by inserting a wrench into the inner hexagonal seat 202 to drive the socket head to rotate, thereby rotating the sensor fixing bolt.

[0029] The annular cover plate 204 is sleeved on the outer side of the extension rod 201 and distributed on the top of the fixed bearing 203. The annular cover plate 204 is covered on the upper surface of the sleeve body 101 and fixedly connected with the sleeve body 101 through a bolt. The fixed bearing 203 and the telescopic spring conversion joint 205 are distributed in the inner side of the telescopic groove 102.

[0030] The compression spring 206 is distributed in the inner side of the telescopic groove 102, and the upper and lower ends of the compression spring 206 are tightly attached to the lower surface of the fixed bearing 203 and the bottom end of the inner wall of the telescopic groove 102, respectively.

[0031] In this embodiment, it is necessary to supplement that the telescopic spring conversion joint 205 is a common electric wrench conversion head on the market, and the socket head is a common screwing bolt tool on the market. The technology is mature, and it is a commonly used tool for automobile maintenance. Therefore, the connection structure and principle of the telescopic spring conversion joint 205, the socket head and the extension rod 201 will not be described here.

[0032] When installing the engine knock sensor, the operation steps are as follows:

[0033] The fixing bolt of the sensor can be first inserted through the sensor mounting hole, and then the whole is clamped into the limiting storage groove 104. The socket head is inserted into the groove of the fixing bolt. It should be noted that the shape of the limiting storage groove 104 matches the shape of the sensor, which is similar to a "convex" structure. During the process of clamping the sensor into the limiting storage groove 104, the sensor will extrude the anti-skid rubber block 106 to deform. The deformed anti-skid rubber block 106 has a large friction force with the sensor. In this way, during the process of pushing the device downward and pushing the sensor to the installation position, the sensor can remain undetached.

[0034] After the sensor is installed in the limiting receiving groove 104, the device is pushed down, the sensor is pushed to the installation position by the extension rod 201, and the limiting protrusion 105 is clamped with the concave-convex surface of the sensor installation position shell, so that the sensor is positioned towards the fixed, that is, the sensor installation angle locking effect is achieved.

[0035] Then, the extension rod 201, the inner ring of the fixed bearing 203, the telescopic spring conversion joint 205, and the bit are rotated by inserting the inner hexagonal seat 202 and rotating it by an external tool (such as an electric wrench or a manual handle), so that the bit drives the fixed bolt to be tightened, and in this process, the extension rod 201 is simultaneously pushed to move the fixed bolt to the installation position, that is, the installation and fixation of the sensor are completed.

[0036] Please refer to Figs. 1-3 , the diameter of the middle hole of the annular cover plate 204 is greater than the outer diameter of the extension rod 201 and the inner hexagonal seat 202, and is less than the outer diameter of the fixed bearing 203.

[0037] The sleeve body 101, the telescopic groove 102, the through hole 103, the limiting receiving groove 104, and the limiting protrusion 105 are integrally formed by an injection molding process, and the upper surface of the sleeve body 101 is formed with a threaded hole for screwing in a bolt.

[0038] In this embodiment, the annular cover plate 204 can be sleeved to the outside of the extension rod 201 from the inner hexagonal seat 202, and then fixed and installed with the sleeve body 101 by a bolt, so that the convenient assembly operation of the sleeve assembly 1 and the extension and screwing assembly 2 is completed, and the device has a simple overall structure and is easy to process and assemble.

[0039] Please refer to Figs. 1-3 , the outer diameter of the outer ring of the fixed bearing 203 matches the inner diameter of the telescopic groove 102, the outer diameter of the telescopic spring conversion joint 205 is less than the inner diameter of the through hole 103, and the diameter of the compression spring 206 is greater than the inner diameter of the through hole 103.

[0040] In this embodiment, the outer diameter of the fixed bearing 203 matches the inner diameter of the telescopic groove 102, which can ensure that the rotation of the extension rod 201 remains stable and reduces the rotation friction of the extension rod 201. It needs to be noted that the compression spring 206 only contacts the bearing outer ring, and the inner ring of the fixed bearing 203 does not interfere with the compression spring 206 when rotating.

[0041] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An engine knock sensor mounting mechanism characterized by comprising: Including sleeve assembly (1), extension screwing assembly (2), the sleeve assembly (1) is used to realize sensor positioning installation, the extension screwing assembly (2) is used to carry out remote screwing operation to the fixing bolt of sensor; The sleeve assembly (1) includes a sleeve body (101), a telescopic slot (102), a through hole (103), a limiting receiving slot (104), a limiting protrusion (105) and an anti-skid rubber block (106). The telescopic slot (102), the through hole (103) and the limiting receiving slot (104) are sequentially arranged on the inner side of the sleeve body (101) from top to bottom, the telescopic slot (102) penetrates the top of the sleeve body (101), the limiting receiving slot (104) penetrates the bottom and one side of the sleeve body (101), the limiting receiving slot (104) is used to provide a positioning receiving space for the sensor, and the anti-skid rubber block (106) is glued and fixed on the side walls on both sides of the opening of the limiting receiving slot (104), and the friction between the anti-skid rubber block (106) and the outer wall of the sensor is used to provide an anti-falling resistance for the sensor. The limiting protrusion (105) is integrally formed on the bottom of the outer side of the sleeve body (101) and extends below the sleeve body (101), the structure of the limiting protrusion (105) is matched with the concave-convex shape of the shell at the sensor installation position, and the limiting protrusion (105) is clamped with the concave-convex surface of the shell at the sensor installation position to realize the positioning and installation of the sensor.

2. An engine knock sensor mounting mechanism according to claim 1, wherein The extension screwing assembly (2) includes an extension rod (201), an internal hexagonal seat (202), a fixed bearing (203), an annular cover plate (204), a telescopic spring conversion joint (205) and a compression spring (206). The internal hexagonal seat (202) is fixed on the top end of the extension rod (201), the fixed bearing (203) is fixed on the outer side of the internal hexagonal seat (202) and close to the bottom end of the extension rod (201), the telescopic spring conversion joint (205) is connected to the bottom end of the extension rod (201), the telescopic spring conversion joint (205) is used to connect a socket matched with the sensor fixing bolt, and the extension rod (201) and the telescopic spring conversion joint (205) are rotated to drive the socket to rotate by inserting a wrench into the internal hexagonal seat (202) to realize the rotation of the sensor fixing bolt. The annular cover plate (204) is sleeved on the outer side of the extension rod (201) and is arranged on the top of the fixed bearing (203), the annular cover plate (204) covers the upper surface of the sleeve body (101) and is fixedly connected with the sleeve body (101) by bolts, and the fixed bearing (203) and the telescopic spring conversion joint (205) are arranged in the telescopic slot (102). The compression spring (206) is arranged in the telescopic slot (102), and the upper and lower ends of the compression spring (206) are tightly attached to the lower surface of the fixed bearing (203) and the bottom end of the inner wall of the telescopic slot (102) respectively.

3. An engine knock sensor mounting mechanism according to claim 2, wherein The diameter of the middle hole of the annular cover plate (204) is greater than the outer diameter of the extension rod (201) and the internal hexagonal seat (202), and is less than the outer diameter of the fixed bearing (203).

4. An engine knock sensor mounting mechanism according to claim 2, wherein The outer ring outer diameter of the fixed bearing (203) matches the inner diameter of the telescopic slot (102), the outer diameter of the telescopic spring conversion joint (205) is smaller than the inner diameter of the through hole (103), and the diameter of the compression spring (206) is greater than the inner diameter of the through hole (103).

5. An engine knock sensor mounting mechanism according to claim 2, wherein The sleeve body (101), the telescopic slot (102), the through hole (103), the limiting receiving groove (104) and the limiting protrusion (105) are integrally formed by an injection molding process, and the upper surface of the sleeve body (101) is formed with a threaded hole for screwing in a bolt.

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