CN210128768U

CN210128768U - Sensor fixing device

Info

Publication number: CN210128768U
Application number: CN201921070674.3U
Authority: CN
Inventors: 王一鸣; 于士博; 黎观生; 郭训鹏
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-03-06
Anticipated expiration: 2029-07-09

Abstract

The utility model belongs to the technical field of fixing devices, and relates to a sensor fixing device, which comprises a sleeve and a fixing piece; the sleeve is used for penetrating through the cavity wall of the multilayer cavity, one end of the sleeve is communicated with the outside, the other end of the sleeve is communicated with a cavity, and the outer peripheral wall of the sleeve is connected with the cavity wall; the sensor is embedded into the sleeve, the measuring end is positioned in a cavity communicated with the sleeve, and the fixing piece is fixedly connected with the sensor and the sleeve. Through the external cavity that detects with needs of sleeve pipe intercommunication to inside installing the measuring end of sensor to the cavity that needs the measurement from the outside, rethread mounting is fixed the sensor, prevents to drop, simple structure, and convenient operation has improved the efficiency of being surveyed the structural arrangement sensor that has the multilayer cavity.

Description

Sensor fixing device

Technical Field

The utility model belongs to the technical field of fixing device, especially, relate to a sensor fixing device.

Background

Sensors, which are detection components, are widely used in industry, and need to be fixed when in use. When the sensor is used for detecting the conditions of general stations, such as the detection of an upper station and a lower station of a machine tool, the sensor is simple to mount and can be directly fixed by fixing parts such as a bracket and the like at a required position, but when the sensor is used for detecting the internal conditions of a structure with a multilayer cavity, such as the fixation of an engine exhaust temperature measuring sensor, the sensor is inconvenient to mount in the sensor due to the complex structure, and the mounting efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the sensor fixing device is provided for solving the problems that the existing sensor is inconvenient to install and low in installation efficiency when being installed inside a tested structure with a plurality of layers of cavities.

In order to solve the above technical problem, an embodiment of the present invention provides a sensor fixing device for detecting a structure to be detected having a multilayer cavity, including a sleeve and a fixing member; the sleeve is used for penetrating through the cavity wall of the multiple layers of cavities, one end of the sleeve is communicated with the outside, the other end of the sleeve is communicated with one cavity, and the peripheral wall of the sleeve is connected with the cavity wall; the sensor is embedded into the sleeve, the measuring end is positioned in the cavity communicated with the sleeve, and the fixing piece is fixedly connected with the sensor and the sleeve.

Optionally, the connecting piece is arranged on the cavity wall of the outer cavity in a sealing manner, and the sleeve is arranged in the connecting piece in a penetrating manner in a liftable manner and is connected with the connecting piece in a sealing manner.

Optionally, the device further comprises a fastener, and a clamping part is arranged on the connecting piece; a third through hole for penetrating the connecting piece is formed in the cavity wall of the outer cavity, and a avoidance hole is formed in the side wall of the third through hole; the clamping portion can penetrate through the avoidance hole after being aligned with the avoidance hole, and can abut against the inner wall of the cavity of the outer layer after the connecting piece is rotated until the clamping portion avoids the avoidance hole; the fastening piece is connected to one end, located outside the cavity wall of the outer-layer cavity, of the connecting piece, and the clamping portion and the fastening piece simultaneously abut against the cavity wall of the outer-layer cavity to fix the connecting piece on the cavity wall of the outer-layer cavity;

the fastener is connected with the connecting piece and the cavity wall of the outer cavity in a sealing mode.

Optionally, the sensor further comprises a sealing element, a fourth through hole for penetrating the sensor is formed in the sealing element, a fifth through hole for penetrating the sensor and a first limiting groove for positioning one end of the sealing element are formed in the fixing element, and the fifth through hole is communicated with the first limiting groove; a second limiting groove used for positioning the other end of the sealing element is formed in the end part, located outside the cavity wall of the outer-layer cavity, of the sleeve, and the through hole of the sleeve is communicated with the second limiting groove; when the fixing piece is locked on the sleeve, the sealing piece deforms and fixes the sensor under the pressure action of the fixing piece.

Optionally, the dimensions of the ends of the seal are smaller than the dimensions of the middle portion.

Optionally, the sealing element is of a spherical structure, and an axis of the fourth through hole passes through a spherical center of the sealing element.

Optionally, a groove is formed in the fixing member, the first limiting groove is formed in the bottom wall of the groove, and the fixing member is sleeved on the sleeve and seals the sleeve.

Optionally, the device further comprises a sealing ring, and a pressing part is arranged on the sleeve; the sealing ring is sleeved on the sleeve and is pressed between the pressing part and the cavity wall of the cavity on the inner layer.

Optionally, a countersunk hole is formed in the cavity wall of the cavity of the inner layer, the sealing ring is arranged in the countersunk hole, and the compressing portion is located outside the countersunk hole.

Optionally, the sleeve is in threaded connection with the connector; threads are arranged on the side wall of the groove and the outer wall of the sleeve, and the fixing piece is connected to the sleeve in a threaded mode;

the connecting piece is provided with a first clamping part for clamping a clamping tool;

the sleeve is provided with a second clamping part for clamping a clamping tool.

The embodiment of the utility model provides a sensor fixing device is through the external cavity that detects with needs of sleeve pipe intercommunication to inside installing the measuring end of sensor from the outside to the cavity that needs the measurement, the rethread mounting is fixed the sensor, prevents to drop, simple structure, and convenient operation has improved the efficiency of being surveyed the structural arrangement sensor having the multilayer cavity.

Drawings

Fig. 1 is a cross-sectional view of a sensor fixing device according to an embodiment of the present invention;

fig. 2 is another cross-sectional view of a sensor mounting apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of the bushing of FIG. 1;

FIG. 4 is a schematic view of the construction of the joint of FIG. 1;

FIG. 5 is a schematic structural view of the structure of FIG. 1 having a multi-layer cavity;

FIG. 6 is a schematic view of the seal of FIG. 1;

figure 7 is a schematic view of the fastener of figure 1 from two different perspectives.

The reference numerals in the specification are as follows:

1. a sleeve; 12. a second limit groove; 13. a pressing part; 14. a second clamping portion;

2. a fixing member; 21. a fifth through hole; 22. a first limit groove; 23. a groove;

3. a sensor;

4. a connecting member; 41. a clamping part; 42. a second through hole; 43. a first clamping portion;

5. a fastener;

6. a seal member; 61. a fourth via hole;

7. a seal ring;

8. a cavity;

81. a third through hole; 82. avoiding holes;

83. and (4) countersinking.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 3, a sensor fixing device provided in an embodiment of the present invention is used for detecting a structure to be detected having a multi-layer cavity, and includes a sleeve 1 and a fixing member 2; the sleeve 1 is used for penetrating through the cavity wall of the multilayer cavity 8, one end of the sleeve 1 is communicated with the outside, the other end of the sleeve 1 is communicated with the cavity 8, and the outer peripheral wall of the sleeve 1 is connected with the cavity wall; the sensor 3 is embedded into the sleeve 1, the measuring end is positioned in a cavity 8 communicated with the sleeve 1, and the fixing piece 2 is fixedly connected with the sensor 3 and the sleeve 1.

The embodiment of the utility model provides a sensor fixing device is applicable to and installs the measuring end of sensor 3 in the condition of the inside of the structure that has the multilayer cavity, for example engine internally mounted temperature sensor's condition. In setting up the embodiment of the utility model provides a during sensor fixing device, need drill on the cavity wall of the structure that has multilayer cavity earlier for installation sensor fixing device, the concrete position of drilling depends on the position of required measuring point. For example, when the temperature sensor is installed inside the engine, i.e., holes are drilled in the respective layers of the engine casing.

The embodiment of the utility model provides a sensor fixing device communicates the external cavity that detects with needs through sleeve pipe 1 to inside installing sensor 3's measuring end from the outside to the cavity that needs the measurement, rethread mounting 2 is fixed sensor 3, prevents to drop, simple structure, and convenient operation has improved the efficiency of being surveyed the structural arrangement sensor 3 that has the multilayer cavity.

Preferably, the peripheral wall of the sleeve 1 is in sealing connection with the wall of the cavity, and the sensor 3 is in sealing connection with the sleeve 1, so that the cavity is prevented from being communicated with the outside, and leakage during testing is avoided.

In an embodiment, as shown in fig. 1, the device further includes a connecting member 4, the connecting member 4 is hermetically disposed on a cavity wall of the outer cavity 8, and the sleeve 1 is liftably disposed in the connecting member 4 and hermetically connected to the connecting member 4. When sensor 3 is installed, only need descend the one end of sleeve pipe 1 to the position that needs the measurement, pass sleeve pipe 1 with sensor 3 again and reach the position that needs the measurement, rethread mounting 2 with sensor 3 fixed can, convenient and fast, easy operation.

Specifically, as shown in fig. 4, the connecting member 4 is provided with a second through hole 42 for penetrating the sleeve 1, a thread is arranged in the second through hole 42, a thread is arranged on the outer wall of the sleeve 1, the connecting member 4 and the sleeve 1 are in threaded connection, and a connecting and sealing effect is achieved, so that the cavity with the structure of the multilayer cavity is separated from the outside, and meanwhile, the installation is facilitated, and the depth of the sleeve 1 extending into the inner cavity with the structure of the multilayer cavity is adjusted.

In one embodiment, as shown in fig. 3, in order to more conveniently adjust the depth of the sleeve 1 extending into the inner cavity of the structure having the multi-layer cavity, the sleeve 1 is provided with a second clamping portion 14 for being clamped by a clamping tool.

In an embodiment, as shown in fig. 2, 4 and 5, the connector further includes a fastener 5, and the connecting member 4 is provided with a clamping portion 41; a third through hole 81 for penetrating the connecting piece 4 is formed in the cavity wall of the outer-layer cavity 8, and a avoidance hole 82 is formed in the side wall of the third through hole 81; the clamping portion 41 can penetrate through the avoidance hole 82 after aligning with the avoidance hole 82, and after the connecting piece 4 is rotated until the clamping portion 41 avoids the avoidance hole 82, the clamping portion 41 can abut against the inner wall of the outer-layer cavity 8; the fastening piece 5 is connected to one end of the connecting piece 4, which is positioned outside the cavity wall of the outer-layer cavity 8, and the clamping part 41 and the fastening piece 5 simultaneously abut against the cavity wall of the outer-layer cavity 8 so as to fix the connecting piece 4 on the cavity wall of the outer-layer cavity 8; the fastener 5 is connected with the connecting piece 4 and the cavity wall of the outer cavity 8 in a sealing way. Before the connecting piece 4 is installed, the cavity wall of the outer cavity 8 is provided with a third through hole 81 and a avoiding hole 82 (when the structure with the multiple layers of cavities is an engine, namely the outer shell of the engine is provided with the third through hole 81 and the avoiding hole 82), the clamping portion 41 is aligned with the avoiding hole 82 and then penetrates through the avoiding hole 82, the connecting piece 4 is rotated to the position where the clamping portion 41 avoids the avoiding hole 82, the clamping portion 41 abuts against the inner wall of the outer cavity 8, at the moment, the fastening piece 5 is connected to one end, located outside the cavity wall of the outer cavity 8, of the connecting piece 4, the fastening piece 5 abuts against the outer wall of the outer cavity 8, and when the clamping portion 41 and the fastening piece 5 abut against the cavity wall of the outer cavity 8 at the same time, the connecting piece 4 is fixed on the cavity wall of the outer cavity 8. The installation is convenient and fast, and the arrangement efficiency of the sensor 3 can be improved.

Specifically, the fastener 5 is screwed to the connecting member 4 to facilitate fixing the connecting member 4.

Preferably, in order to perform the sealing function, a repairing agent is coated on the connecting position of the fastener 5 and the cavity wall of the outer cavity 8 or the connecting position of the fastener and the cavity wall is welded to seal the gap at the connecting position.

In one embodiment, as shown in fig. 4, the connecting member 4 is provided with a first clamping portion 43 for clamping by a clamping tool. By holding the first clamping portion 43 with a clamping tool such as a wrench, the connecting member 4 is prevented from rotating when the fastener 5 is tightened to the connecting member 4.

In an embodiment, as shown in fig. 3 and 6-7, the sensor package further includes a sealing member 6, the sealing member 6 is provided with a fourth through hole 61 for passing through the sensor 3, the fixing member 2 is provided with a fifth through hole 21 for passing through the sensor 3 and a first limiting groove 22 for positioning one end of the sealing member 6, and the fifth through hole 21 is communicated with the first limiting groove 22; a second limiting groove 12 for positioning the other end of the sealing element 6 is formed in the end, located outside the cavity wall of the outer-layer cavity 8, of the sleeve 1, and the through hole of the sleeve 1 is communicated with the second limiting groove 12; when the fixing member 2 is locked to the casing 1, the sealing member 6 deforms under the pressure of the fixing member 2 to fix the sensor 3. When the seal member 6 is compressed and deformed, the diameters of the both ends of the fourth through hole 61 are reduced, and the seal member 6 clamps the sensor 3. By providing the sealing member 6, the sensor 3 is fixed while sealing is performed.

In one embodiment, the size of the two ends of the sealing member 6 is smaller than that of the middle portion, so that the diameter of the four through holes 61 can be reduced to clamp the sensor 3 when the sealing member 6 is compressed by pressure.

Preferably, as shown in fig. 6, the sealing member 6 has a spherical structure, and the axis of the fourth through hole 61 passes through the spherical center of the sealing member 6. By providing the sealing member 6 as a sphere structure, the sealing effect can be improved, and the sealing member 6 is also more easily deformed to clamp the sensor 3. In particular, the seal is a sealed copper ball.

In an embodiment, as shown in fig. 7, a groove 23 is formed on the fixing member 2, the first limiting groove 22 is formed on the bottom wall of the groove 23, and the fixing member 2 is sleeved on the sleeve 1 and seals the sleeve 1. The fixing part 2 plays a role in fixing the sensor 3 and also plays a role in sealing.

In one embodiment, the side wall of the groove 23 and the outer wall of the sleeve 1 are provided with mutually matched threads, and the fixing member 2 is connected to the sleeve 1 in a threaded manner. Through threaded connection's mode for the installation is more convenient, only need with mounting 2 screw up on sleeve pipe 1 can, certain sealed effect has also been played simultaneously.

In one embodiment, as shown in fig. 1 and 5, the sleeve further comprises a sealing ring 7, and a pressing part 13 is arranged on the sleeve 1; the sealing ring 7 is sleeved on the sleeve 1 and is pressed between the pressing part 13 and the cavity wall of the inner cavity 8. The sealing function is achieved by the provision of the sealing ring 7.

In one embodiment, as shown in fig. 1 and 5, the cavity wall of the cavity 8 of the inner layer is provided with a counter bore 83, the sealing ring 7 is arranged in the counter bore 83, and the pressing portion 13 is located outside the counter bore 83. The counter bore 83 enables the sealing ring 7 to be positioned and the sealing ring 7 to be located in the counter bore 83 to further enhance the sealing action. Specifically, the sealing ring is a sealing copper ring.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A sensor fixing device is used for detecting a detected structure with a multilayer cavity and is characterized by comprising a sleeve and a fixing piece; the sleeve is used for penetrating through the cavity wall of the multiple layers of cavities, one end of the sleeve is communicated with the outside, the other end of the sleeve is communicated with one cavity, and the peripheral wall of the sleeve is connected with the cavity wall; the sensor is embedded into the sleeve, the measuring end is positioned in the cavity communicated with the sleeve, and the fixing piece is fixedly connected with the sensor and the sleeve.

2. The sensor fixing device of claim 1, further comprising a connecting member, wherein the connecting member is hermetically disposed on a cavity wall of the outer cavity, and the sleeve is liftably disposed in the connecting member and hermetically connected to the connecting member.

3. The sensor fixing device according to claim 2, further comprising a fastener, wherein the connecting member is provided with a clamping portion; a third through hole for penetrating the connecting piece is formed in the cavity wall of the outer cavity, and a avoidance hole is formed in the side wall of the third through hole; the clamping portion can penetrate through the avoidance hole after being aligned with the avoidance hole, and can abut against the inner wall of the cavity of the outer layer after the connecting piece is rotated until the clamping portion avoids the avoidance hole; the fastening piece is connected to one end, located outside the cavity wall of the outer-layer cavity, of the connecting piece, and the clamping portion and the fastening piece simultaneously abut against the cavity wall of the outer-layer cavity to fix the connecting piece on the cavity wall of the outer-layer cavity;

4. The sensor fixing device according to claim 2, further comprising a sealing member, wherein the sealing member is provided with a fourth through hole for passing through the sensor, the fixing member is provided with a fifth through hole for passing through the sensor and a first limiting groove for positioning one end of the sealing member, and the fifth through hole is communicated with the first limiting groove; a second limiting groove used for positioning the other end of the sealing element is formed in the end part, located outside the cavity wall of the outer-layer cavity, of the sleeve, and the through hole of the sleeve is communicated with the second limiting groove; when the fixing piece is locked on the sleeve, the sealing piece deforms and fixes the sensor under the pressure action of the fixing piece.

5. The sensor fixation device of claim 4, wherein the seal has ends that are smaller in size than a middle portion.

6. The sensor fixation device of claim 5 wherein the seal is a spherical structure, and an axis of the fourth through hole passes through a center of a sphere of the seal.

7. The sensor fixing device of claim 5, wherein the fixing member has a groove, the first limiting groove is disposed on a bottom wall of the groove, and the fixing member is disposed on the sleeve and seals the sleeve.

8. The sensor fixing device according to claim 1, further comprising a sealing ring, wherein the sleeve is provided with a pressing portion; the sealing ring is sleeved on the sleeve and is pressed between the pressing part and the cavity wall of the cavity on the inner layer.

9. The sensor fixing device according to claim 8, wherein a countersunk hole is formed in a cavity wall of the cavity of the inner layer, the sealing ring is arranged in the countersunk hole, and the compressing portion is located outside the countersunk hole.

10. The sensor fixation device of claim 7, wherein the sleeve is threaded with the connector; threads are arranged on the side wall of the groove and the outer wall of the sleeve, and the fixing piece is connected to the sleeve in a threaded mode;