阅读说明：本技术 一种用于片式氧气传感器的转接和电传输装置 (Switching and electricity transmission device for sheet type oxygen sensor ) 是由 张志强 常斌 鲁耀 陈浩远 赵振平 张琳 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种用于片式氧气传感器的转接和电传输装置,包括底座(1)、卡簧(2)、卡簧固定座(3),底座上设有至少供一对卡簧固定座插入的卡槽；卡簧固定座上设有长方体空腔,卡簧固定座的底部还设有导线夹头；卡簧按规定尺寸弯折后分成长方体和弧状突起,卡簧的长方体安装到卡簧固定座的长方体空腔,固定好的卡簧和卡簧固定座插入底座卡槽内,左右对称的卡簧的弧状突起形成小于传感元件厚度的空隙,卡簧的弧状突起具有一定的弹性,传感元件插入空隙后,两个卡簧夹持固定传感元件,卡簧的弧状突起与铂电极牢固连接,导线通过卡簧固定座中导线夹头折弯后夹紧,传感元件铂电极与导线通过卡簧转接。本发明保证了信号传输的精度和可靠性。(The invention discloses a switching and electricity transmission device for a chip oxygen sensor, which comprises a base (1), a clamp spring (2) and a clamp spring fixing seat (3), wherein the base is provided with at least one clamping groove for inserting a pair of clamp spring fixing seats; the clamp spring fixing seat is provided with a cuboid cavity, and the bottom of the clamp spring fixing seat is also provided with a wire chuck; the clamp spring is bent according to a specified size and then divided into a cuboid and arc-shaped protrusions, the cuboid of the clamp spring is installed in a cuboid cavity of a clamp spring fixing seat, the fixed clamp spring and the clamp spring fixing seat are inserted into a clamping groove of the base, gaps smaller than the thickness of the sensing element are formed by the arc-shaped protrusions of the clamp springs which are symmetrical left and right, the arc-shaped protrusions of the clamp springs have certain elasticity, after the sensing element is inserted into the gaps, the two clamp springs clamp and fix the sensing element, the arc-shaped protrusions of the clamp springs are firmly connected with the platinum electrode, the lead is bent through a lead clamping head in the clamp spring fixing seat and then clamped, and the platinum electrode of the sensing element is connected with the lead through the clamp springs. The invention ensures the precision and reliability of signal transmission.)

1. The utility model provides a switching and electricity transmission device for piece formula oxygen sensor, includes base (1), jump ring (2), jump ring fixing base (3), its characterized in that:

the base (1) is provided with at least one clamping groove for inserting the pair of clamp spring fixing seats (3);

a cuboid cavity (5) is formed in the clamp spring fixing seat (3) and used for installing a clamp spring (2), and a wire chuck (7) is further arranged at the bottom of the clamp spring fixing seat (3);

the clamp spring (2) is bent according to a specified size and then divided into a cuboid and arc-shaped protrusions (8), the cuboid of the clamp spring (2) is installed in a cuboid cavity (5) of the clamp spring fixing seat (3), the fixed clamp spring (2) and the clamp spring fixing seat (3) are inserted into a clamping groove of the base (1), the arc-shaped protrusions (8) of the clamp spring (2) which are symmetrical left and right keep the same distance with the bottom of the clamping groove of the base (1), a gap which is smaller than the thickness of a sensing element is formed by the arc-shaped protrusions (8), the arc-shaped protrusions (8) of the clamp spring (2) have certain elasticity, after the sensing element is inserted into the gap, the two clamp springs (2) clamp and fix the sensing element, arc-shaped protrusions (8) of the clamp springs (2) are firmly connected with the platinum electrode, the wire is bent through a wire chuck (7) in the clamp spring fixing seat (3) and then clamped, and the platinum electrode of the sensing element is connected with the wire through the clamp springs (2).

2. An electrical and switching device for a chip oxygen sensor according to claim 1, wherein the base (1) has 2 protrusions on its upper part, which fit into the grooves on the sensor holder to prevent the base from rotating.

3. An electrical and switching transmission device for a chip oxygen sensor according to claim 1, characterized in that the base (1) is of ceramic material.

4. The switching and electricity transmission device for the chip oxygen sensor according to claim 1, wherein an upper fixing lug (4) is arranged above the cuboid cavity (5) of the clamp spring fixing seat (3), a lower fixing lug (6) is arranged below the cuboid cavity (5), and after the clamp spring fixing seat (3) is inserted into the clamping groove of the base (1), the clamp spring fixing seat (3) is fixed on the base (1) by breaking the upper fixing lug (4) and the lower fixing lug (6).

5. The switching and electricity transmission device for the chip oxygen sensor according to claim 1, wherein the cuboid of the snap spring (2) is fixed by laser welding after being installed in the cuboid cavity (5) of the snap spring fixing seat (3), and one surface far away from the arc-shaped protrusion (8) is ground to be flat after welding.

6. An adapting and electricity transmission device for a chip oxygen sensor according to claim 1, characterized in that the circlip (2) is made of high temperature alloy material.

7. An electrical and transfer device for a chip oxygen sensor according to claim 1 wherein the arc-like protrusions (8) are coated with an inert metal.

Technical Field

The invention relates to a switching and electricity transmission device, in particular to a switching and electricity transmission device for a chip oxygen sensor.

Background

In the flying process of the airplane, the oxygen partial pressure value in the oxygen system needs to be monitored at any time for controlling the oxygen partial pressure and ensuring that the oxygen supplied to a pilot is in a comfortable and safe state. In order to meet the requirements of miniaturization and light weight of aviation products and improve the vibration resistance of the products, the sensor element and the heater adopt sheets formed by sintering multilayer ceramics, and the lead wires of the sensor element and the heater are in a platinum wire electrode form. The traditional switching mode between platinum wire electrode and wire is the welding, and platinum electrode is the cuboid, and thickness is the micron order, and the wire welding is insecure, very easily drops. Therefore, an attachment device capable of ensuring that the platinum wire electrode is firmly connected with the lead wire and performing stable electric signal output in a high-temperature and high-oxygen environment is needed.

Disclosure of Invention

The invention aims to provide a switching and electricity transmission device for a chip oxygen sensor, which can ensure that a platinum electrode is firmly connected with a lead and ensure the precision and reliability of signal transmission.

The invention aims to be realized by the following technical scheme:

a switching and electricity transmission device for a sheet type oxygen sensor comprises a base 1, a clamp spring 2 and a clamp spring fixing seat 3;

the base 1 is provided with at least one clamping groove for inserting the pair of clamp spring fixing seats 3;

a cuboid cavity 5 is formed in the clamp spring fixing seat 3 and used for installing a clamp spring 2, and a wire chuck 7 is further arranged at the bottom of the clamp spring fixing seat 3;

the clamp spring 2 is bent according to a specified size and then divided into a cuboid and arc-shaped protrusions 8, the cuboid of the clamp spring 2 is installed in a cuboid cavity 5 of the clamp spring fixing seat 3, the clamp spring 2 and the clamp spring fixing seat 3 which are fixed are inserted into a clamping groove of the base 1, the arc-shaped protrusions 8 of the clamp spring 2 which are bilaterally symmetrical keep the same distance with the bottom of the clamping groove of the base 1, a pair of arc-shaped protrusions 8 form a gap which is smaller than the thickness of a sensing element, the arc-shaped protrusions 8 of the clamp spring 2 have certain elasticity, after the sensing element is inserted into the gap, the two clamp springs 2 clamp and fix the sensing element, the arc-shaped protrusions 8 of the clamp spring 2 are firmly connected with a platinum electrode, a lead is bent through a lead chuck 7 in the clamp spring fixing seat 3 and then clamped, and the platinum electrode of the sensing element is connected with the lead through the clamp spring 2.

Preferably, the upper part of the base 1 is provided with 2 bulges which are matched with the grooves on the sensor bracket to prevent the base from rotating.

Preferably, the base 1 is a ceramic material.

Preferably, the upper fixing lug 4 is arranged above the cuboid cavity 5 of the clamp spring fixing seat 3, the lower fixing lug 6 is arranged below the cuboid cavity 5, and the clamp spring fixing seat 3 is fixed on the base 1 by breaking the upper fixing lug 4 and the lower fixing lug 6 after being inserted into the clamping groove of the base 1.

Preferably, the cuboid of the clamp spring 2 is installed in the cuboid cavity 5 of the clamp spring fixing seat 3 and then fixed through laser welding, and one surface far away from the arc-shaped protrusion 8 is ground to be flat after welding.

Preferably, the circlip 2 is made of high-temperature alloy material.

Preferably, the arc-shaped protrusions 8 are coated with an inert metal coating.

The invention has the beneficial effects that: the arc-shaped protrusions 8 of the two clamp springs 2 installed in the symmetrical clamping grooves of the base 1 form a gap smaller than the thickness of the sensing element, the arc-shaped protrusions 8 of the clamp springs 2 have certain elasticity, after the sensing element is inserted into the gap, the two clamp springs 2 clamp and fix the sensing element, the arc-shaped protrusions 8 of the clamp springs 2 are firmly connected with the platinum electrode, the wire is bent through a wire chuck 7 in the clamp spring fixing seat 3 and then clamped tightly, the platinum electrode of the sensing element and the wire are connected through the clamp springs 2 in a switching mode, the risks of infirm welding and welding point falling caused by traditional welding are effectively avoided, and the reliability of signal transmission of the platinum electrode and the wire is realized. The clamp spring 2 is made of high-temperature alloy materials, and the arc-shaped protrusions 8 are plated with inert metal coatings, so that the clamp spring is stable in structure and conduction under high-temperature and high-oxygen states, and the firm connection between the arc-shaped protrusions 8 of the clamp spring 2 and a platinum electrode and the transmission precision of electric signals can be guaranteed. The base is a ceramic structural member, has good insulativity under high-temperature and high-oxygen environments, can ensure the insulating dielectric strength between each platinum electrode of the sensing element, increases the anti-interference performance and improves the transmission precision.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an external view of the clamp spring fixing seat of the present invention.

FIG. 3 is an external view of the clamp spring of the present invention.

FIG. 4 is an external view of the base of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Referring to fig. 1, the high-temperature switching and electricity transmission device for the chip oxygen sensor comprises a base 1, a clamp spring 2 and a clamp spring fixing seat 3.

Referring to fig. 4, the base 1 is provided with at least one slot for inserting the pair of snap spring fixing seats 3. Preferably, the upper part of the base 1 is provided with 2 bulges which are matched with the grooves on the sensor bracket to prevent the base from rotating. Preferably, the base 1 is made of a ceramic material, so that the conductive paths can be insulated and isolated, interference between internal circuits can be prevented, and transmission accuracy can be improved.

Referring to fig. 2, the clamping spring fixing seat 3 is provided with the cuboid cavity 5 for the installation and use of the clamping spring 2, the bottom of the clamping spring fixing seat 3 is further provided with the wire chuck 7, the wire is clamped tightly after being bent through the wire chuck 7, the problem that the traditional welding connection is easy to break away at high temperature can be avoided, and the stability and the high-temperature reliability of electric transmission are improved. Preferably, the top of cuboid cavity 5 is equipped with fixed ear 4, and cuboid cavity 5 below is equipped with down fixed ear 6, and jump ring fixing base 3 inserts the draw-in groove of base 1 back, fixes jump ring fixing base 3 on base 1 through breaking fixed ear 4 off with the fingers and thumb and fixing ear 6 down, need not other fixed knot structure and spare part, simple structure, simple operation.

Referring to fig. 3, the clamp spring 2 is bent according to a specified size and then divided into a cuboid and an arc-shaped protrusion 8, the cuboid of the clamp spring 2 is installed in the cuboid cavity 5 of the clamp spring fixing seat 3 and then fixed through laser welding, and one surface far away from the arc-shaped protrusion 8, namely the surface A in fig. 3, is ground flat after welding, so that the difficulty of the forming process of the clamp spring 2 and the clamp spring fixing seat 3 is reduced, and the size precision of the clamp spring 2 is ensured. The clamp spring 2 is made of high-temperature alloy materials, so that the dimensional stability of the clamp spring in a high-temperature environment is improved. The arc-shaped protrusion 8 is plated with an inert metal coating to prevent the clamp spring 2 from being oxidized in a high-temperature and high-oxygen environment to cause poor contact between the clamp spring and the platinum electrode.

The clamp springs 2 and the clamp spring fixing seats 3 which are welded and fixed are inserted into clamping grooves of the base 1, arc-shaped protrusions 8 of the clamp springs 2 which are bilaterally symmetrical keep the same distance with the bottom of the clamping groove of the base 1, namely a surface B in the figure 1, gaps smaller than the thickness of a sensing element are formed by the arc-shaped protrusions 8, the arc-shaped protrusions 8 of the clamp springs 2 have certain elasticity, after the sensing element is inserted into the gaps, the two clamp springs 2 clamp and fix the sensing element, the arc-shaped protrusions 8 of the clamp springs 2 are firmly connected with platinum electrodes, the wires are bent through wire chucks 7 in the clamp spring fixing seats 3 and then clamped, the platinum electrodes of the sensing element are switched with the wires through the clamp springs 2, the risks of infirm welding and falling of welding points caused by traditional welding are effectively avoided, and the reliability of signal transmission of the platinum electrodes and the wires is realized.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.