CN204373677U - A kind of shell and use the compound sensor of this shell - Google Patents

Abstract

The utility model discloses a shell and a composite sensor using the shell. Its shell includes a shell, a cover and an insulating seat. The inside of the shell is provided with a cavity, and the insulating seat is installed at the bottom of the cavity. The top of the cavity is provided with an opening, and the bottom of the cavity is provided with A first through hole, a second through hole is opened on the side wall of the cavity, and the cover is used to seal the opening of the cavity. The utility model has a reasonable and ingenious shell layout, can integrate two different types of sensors, is easy to install, has a compact structure, and has good waterproof and shockproof performance, which reduces the installation work of the axle box position sensor and saves The installation space is optimized for cable routing.

Description

A shell and composite sensor using the shell

technical field

The utility model relates to a sensor shell, in particular to a shell capable of encapsulating two sensors at the same time and the obtained composite sensor.

Background technique

The working state of the train axle box is an important monitoring content for the safe operation of the train, and temperature sensors and vibration acceleration sensors are usually used to monitor relevant data changes.

At present, the acceleration sensor and temperature sensor used to monitor the axle box of the motor vehicle use independent sensors. The acceleration sensor and temperature sensor are installed and wired separately, and the temperature and acceleration data are monitored in two ways. However, this installation mode is limited by the installation location and installation space. The engineering installation work is time-consuming and laborious, and the wiring is complicated and numerous, which is not suitable for management and maintenance. Therefore, how to make each sensor occupy as little space as possible, how to simplify the cable layout of the sensors and improve the installation efficiency of the sensors has always been one of the issues to be solved in this field.

Utility model content

The technical problem to be solved by the utility model is: to provide a composite sensor using the casing, the casing can package two different types of sensors into one to form a composite sensor, thereby reducing the occupied space.

In order to solve the above problems, the technical solution adopted by the utility model is: the utility model shell includes a shell, a cover and an insulating seat, the inside of the shell is provided with a cavity, and the top of the cavity is provided with an opening. The insulating seat is installed on the bottom of the cavity, the bottom of the cavity is provided with a first through hole, the side wall of the cavity is provided with a second through hole, and the cover is used to cover the cavity The opening is sealed.

Further, a third through hole is opened at the bottom of the cavity of the present invention.

Further, the second through hole of the present invention is opened on the first side wall of the cavity, the second side wall of the cavity is opposite to the first side wall, and the first through hole and the third The distances from the geometric centers of the through holes to the second side wall are equal, and the distances from the geometric centers of the first through hole and the third through hole to the second side wall are smaller than the respective distances to the first side wall.

Further, the shape of the insulating seat of the present invention is "T" shape, the first through hole and the third through hole are opened in the vacant part of the bottom of the cavity not covered by the insulating seat, and the first The through holes and the third through holes are symmetrically distributed around the vertical part of the "T" character.

Further, there are two second through holes in the utility model.

Further, the second through hole of the present invention is processed with internal threads.

The composite sensor packaged with the shell of the utility model includes a shell, a cover and an insulating seat, the inside of the shell is provided with a cavity, the insulating seat is installed at the bottom of the cavity, and the cavity The top is provided with an opening, the bottom of the cavity is provided with a first through hole, the side wall of the cavity is provided with a second through hole, and the cover is used to seal the opening of the cavity; The bottom also has a third through hole; the second through hole is opened on the first side wall of the cavity, the second side wall of the cavity is opposite to the first side wall, and the first through hole and the distance from the geometric center of the third through hole to the second side wall is less than the distance to the first side wall respectively, the distances from the geometric center of the first through hole and the third through hole to the second side wall are equal, and the The shape of the insulating seat is "T", the first through hole and the third through hole are opened in the vacant part of the bottom of the cavity that is not covered by the insulating seat, and the first through hole and the third through hole are separated by The vertical part of the "T" character is symmetrically distributed around the center; there are two second through holes, and the second through holes are processed with internal threads; the insulating base is fixedly installed with a first sensor The circuit board of the chip, the second sensor is fixedly installed in the first through hole, the third sensor is fixedly installed in the third through hole, and the wire of the circuit board passes through one of the first through holes from the cavity. Two through holes pass through the second through hole, and the wire of the second sensor passes through the second through hole from the cavity and passes through the second through hole.

Further, the first sensor of the present invention is an acceleration sensor, and the second sensor and the third sensor are temperature sensors.

Compared with the prior art, the utility model has the beneficial effects that: the utility model has a reasonable and ingenious shell layout, can integrate two different types of sensors together, is easy to install, has a compact structure, and has good waterproof and shockproof performance , while reducing the installation work of the axle box position sensor of the motor vehicle, it also saves the installation space and optimizes the cable layout.

Description of drawings

Fig. 1 is the exploded view of the structure of the composite sensor using the utility model housing;

Fig. 2 is a schematic structural view of the cavity of the housing of the present invention;

Fig. 3 is a structural schematic diagram of installing a circuit board with an acceleration sensor chip in the cavity of the housing of the present invention;

Fig. 4 is a schematic diagram of the relative positional relationship between the temperature sensor of the present invention and its installation hole;

Fig. 5 is a structural schematic view of the inner side of the cover of the present invention;

Fig. 6 is a schematic structural view of the insulating seat of the present invention;

In the figure: 1. Second sensor, 11. Third sensor, 2. Housing, 21. Cavity, 211. First side wall, 212. Second side wall, 221. First through hole, 222. Third Through hole, 23. Shell installation hole, 24. Second through hole, 25. Sealing ring bead, 26. Cover installation screw hole, 3. Insulation seat (shaped in "T" shape), 31. "T" character Type vertical part, 4. circuit board with the first sensor chip, 5. seal ring, 6. cover, 61. seal ring groove, 62. installation via hole.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the protection scope of the utility model.

As shown in FIGS. 1 to 5 , the housing of the present invention includes a housing 2 , a cover 6 and an insulating seat 3 . The inside of the housing 2 is provided with a cavity 21, and the insulating base 3 is installed on the bottom of the cavity 21, and the bottom of the cavity 21 is provided with a first through hole 221 and a third through hole 222, and the first through hole 221 and the third through hole The holes 222 are located on both sides of the insulating seat 3 , and the side wall of the cavity 21 is provided with a second through hole 24 ; the top of the cavity 21 is provided with an opening, and the cover 6 is used to seal the opening of the cavity 21 .

As a preferred mode of the present utility model, as shown in Figures 1, 2, 3, and 5, the second through hole 24 is opened on the first side wall 211 of the cavity 21, and the second side wall 212 of the cavity 21 is connected to the first side wall 211. The side walls 211 are opposite, the distance from the geometric center of the first through hole 221 and the third through hole 222 to the second side wall 212 is equal, and the distance from the geometric center of the first through hole 221 to the second side wall 212 is smaller than that of the first through hole The distance from the geometric center of 221 to the first sidewall 211 and the distance from the geometric center of the third through hole 222 to the second sidewall 212 are smaller than the distance from the geometric center of the third through hole 222 to the first sidewall 211 . As a result, the limited space of the cavity 21 can be utilized more effectively and the wiring of the sensor can be simpler and more reasonable.

As shown in Figures 1, 3 and 6, as a preferred embodiment of the present invention, the shape of the insulating seat 3 is "T". Referring to Fig. 3, the first through hole 221 and the third through hole 222 are opened in the vacant part of the bottom of the cavity 21 which is not covered by the insulating seat 3, and the first through hole 221 and the third through hole 222 are marked with the word "T". The type vertical part 31 is centered and distributed symmetrically on the left and right, so that the bottom space of the cavity 21 can be fully utilized, and the shell structure is more compact and the volume is smaller.

When there is only one second through hole 24, the wires of the first sensor circuit board 4 and the second sensor pass through the second through hole 24 from the cavity 21 and are connected with various types of external protective tubes, connectors, etc. .

As shown in Figures 1 to 4, when there are two second through holes 24, one of the second through holes 24 is used to allow the wires of the circuit board 4 with the first sensor chip to pass through the second through hole from the cavity 21. hole, and another second through hole 24 is used to allow the wire of the second sensor 2 to pass through the second through hole from the cavity 21 .

As an embodiment of the present utility model, as shown in Figures 1, 2, 3, and 5, the inner surface of the cover 6 is provided with an annular sealing ring groove 61, and the sealing ring groove 61 has a built-in sealing ring 5. The body 2 is provided with a sealing ring bead 25 matching the sealing ring 5, the sealing ring bead 25 is located on the outer periphery of the opening of the cavity 21, and the sealing ring bead 25 realizes the capping 6 by squeezing the sealing ring 5 The opening of the cavity 21 is sealed and has a good waterproof effect.

The composite sensor of the present invention can be obtained by packaging the circuit board with the first sensor chip and the second sensor with the above shell. Hereinafter, the first sensor is an acceleration sensor and the second sensor is a temperature sensor as an example for detailed description, wherein the circuit board 4 with the first sensor chip is a circuit board with an acceleration sensor chip.

Referring to Figures 1 to 5, the size and shape of the circuit board with the acceleration sensor chip matches the insulating seat 3, so that when the circuit board with the acceleration sensor chip is fixedly installed (such as glued) on the insulating seat 3, the acceleration The circuit board of the sensor chip coincides with the insulating seat 3 and does not exceed the boundary of the insulating seat 3 , thus no additional space is occupied. The insulating base 3 can be installed on the bottom of the cavity 21 by clamping with the cavity 21 , or can be fixed on the bottom of the cavity 21 by gluing.

Using two temperature sensors to detect the same measured object is a more secure measure. For this reason, both the second sensor 1 and the third sensor 11 are temperature sensors, and the second sensor 1 is used as the main temperature sensor. And the third sensor 11 is used as the backup of the second sensor 1, so that when one of the temperature sensor data is abnormal, the data of another temperature sensor can be referred to; or when one of the temperature sensors breaks down, it is ensured that there is another A temperature sensor would work. Specifically, a temperature sensor is welded in each of the first through hole 221 and the third through hole 222 , and the probes of each temperature sensor extend out of the cavity 21 .

The wires of the circuit board with the acceleration sensor chip pass through one of the second through holes 24 from the cavity 21, and the wires of the two temperature sensors can be brought together and passed through the other second through hole 24 from the cavity 21. out. Each of the second through holes 24 is processed with an internal thread, so that the second through holes 24 can be adapted to and screwed together with standard conversion joints of various specifications. Through the conversion joint standard parts of different specifications, the composite sensor of the utility model can be connected with various types of external protective pipes and connectors, so that it can be applied to different vehicle models and connection types in different application scenarios.

Because the conversion connector has a wire hole, the wires of the circuit board with the acceleration sensor chip and the wires of the two temperature sensors pass through the wire hole of the corresponding conversion connector respectively, and each conversion connector is threaded with the corresponding second through hole 24. After the connection, the second through hole 24 is further sealed by using a glue filling process, so as to achieve the effect of sealing and waterproofing. If no conversion joint is used, after the wires of the circuit board with the acceleration sensor chip and the wires of the two temperature sensors pass through the corresponding second through holes 24 respectively, the second through hole 24 and the wires can be connected with the second through hole 24 using the glue filling process. The gap between them is sealed. The cavity 21 is filled with glue, which can ensure that the insulating seat 3 in the cavity 21, the acceleration sensor circuit board 4 and its wires, the temperature sensor and its wires are all covered by glue, so as to further prevent the components in the cavity 21 from vibrating .

The cover 6 is provided with an installation hole 62, and the top of the housing 2 is provided with a cover installation screw hole 26, and a bolt (not shown in the figure) is inserted into the installation through hole 62 and the cover installation screw hole 26 and tightened. That is, the cover 6 and the housing 2 can be fixedly installed together. Simultaneously, since the inner surface of the cover 6 is provided with an annular sealing ring groove 61, the sealing ring 5 is embedded in the sealing ring groove 61, and correspondingly, a The sealing ring bead 25 matched with the sealing ring 5, so that when the cover 6 is covered on the housing 2, the sealing ring bead 25 forms a squeeze on the sealing ring 5, thereby ensuring that the cover 6 and the housing 2 are installed on the After being together, there is a good waterproof sealing effect.

As a specific application of the composite sensor of the present invention, the whole composite sensor can be fixedly installed on the axle box body of the motor car through the housing mounting hole 23, wherein the probe of the temperature sensor is stretched into the axle box body of the motor car, so that it can The internal temperature of the axle box of the motor car is measured; the acceleration sensor can monitor the vibration of the axle box of the motor car.

The composite sensor packaged by using the shell of the utility model can maintain a compact and small appearance, and ensure good waterproof and shockproof performance through a reliable packaging process. The second through hole 24 is processed into a standard threaded interface, so that the composite sensor integrated and packaged through the shell of the utility model can be adapted to various types of adapter standard parts, so that the composite sensor can be connected to various types of wires through the adapter. Protective pipe connection, suitable for a wider range of application scenarios. The housing of the utility model integrates two different types of sensors, which not only simplifies the types of axle box sensors and saves costs, but also simplifies the complicated operation of the sensor wiring process, saves manpower and material resources, and makes the vehicle body The wiring is more tidy and smooth, which is convenient for management and maintenance.

Claims (10)

1. a shell, it is characterized in that: comprise housing, capping and insulating base, the inside of described housing is provided with cavity, the top of described cavity is provided with opening, described insulating base is installed on the bottom of described cavity, the bottom of described cavity has the first through hole, and the sidewall of described cavity offers the second through hole, and described capping is used for the described opening sealing of cavity.

2. shell according to claim 1, is characterized in that: the bottom of described cavity also has third through-hole.

3. shell according to claim 2, it is characterized in that: described second through hole is opened on the first side wall of described cavity, second sidewall of cavity is relative with described the first side wall, the geometric center of described first through hole and third through-hole is equal to the distance of the second sidewall, and the geometric center of described first through hole and third through-hole is less than separately to the distance of the first side wall to the distance of the second sidewall.

4. the shell according to Claims 2 or 3, it is characterized in that: the profile of described insulating base is in " T " font, described first through hole and third through-hole are opened in the bottom of cavity not by the vacancy position that insulating base covers, and described first through hole and third through-hole symmetrical distribution centered by the vertical portion of described " T " word.

5. shell according to any one of claim 1 to 3, is characterized in that: described second through hole has two.

6. shell according to claim 4, is characterized in that: described second through hole has two.

7. the shell according to claim 1,2,3 or 6, is characterized in that: described second through hole is processed with internal thread.

8. shell according to claim 4, is characterized in that: described second through hole is processed with internal thread.

9. the compound sensor using the shell of claim 3 to encapsulate, it is characterized in that: the profile of described insulating base is in " T " font, described first through hole and third through-hole are opened in the bottom of cavity not by the vacancy position that insulating base covers, and described first through hole and third through-hole symmetrical distribution centered by the vertical portion of described " T " word; Described second through hole has two, and described second through hole is processed with internal thread; Described insulating base is installed with the circuit board of band first sensor chip, described first through hole internal fixtion is provided with the second sensor, described third through-hole internal fixtion is provided with the 3rd sensor, the wire of described circuit board passes and this second through hole through the second through hole described in one of them from described cavity, and the wire of described second sensor passes and this second through hole through the second through hole described in another from described cavity.

10. compound sensor according to claim 9, is characterized in that: described first sensor is acceleration transducer, and described second sensor and the 3rd sensor are temperature sensor.