JPH0725643Y2 - Temperature sensor mounting structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a temperature sensor installed in an evaporator unit of a vehicle air conditioner for detecting the temperature of cooling air passing through the evaporator.

[0002]

2. Description of the Related Art Generally, in an evaporator unit of a vehicle air conditioner, a temperature sensor for detecting a cooling air temperature after passing through the evaporator is installed in order to prevent the evaporator from freezing during air conditioning control (for example,
Actual exploitation number 63-57532, Actual exploitation number 63-57533
issue). To install this type of temperature sensor, as shown in FIGS. 6 and 7, the bracket 4 with the temperature sensor 1 attached to the tip is inserted from the bracket insertion hole 3 provided in the unit case 2 of the evaporator, and the bracket is attached. The mounting plate 5 attached to the base end portion of 4 is fixed to the unit case 2 with screws 6. Further, the lead wire 1a of the temperature sensor 1 is drawn out of the unit case 2 through the sensor insertion hole 7 provided in the mounting plate 5 along the bracket 4, and the other end of the lead wire 1a has a connector. Is installed.

[0003]

However, in the mounting structure of the temperature sensor as described above, since the temperature sensor, the lead wire and the connector are generally integrally manufactured in advance, the temperature sensor is mounted on the bracket. The temperature sensor must be inserted and mounted through the sensor insertion hole of the mounting plate, and the sensor insertion hole must be formed in a large hole into which the sensor can be inserted. Therefore, conventionally, as shown in FIGS. 6 and 7, a grommet 8 is attached to the sensor insertion hole 7 through which the lead wire 1a is inserted,
By applying the sealing agent 9, it must be closed to prevent air from leaking, which increases the number of parts and complicates assembly, resulting in a problem of increased manufacturing cost.

Therefore, an object of the present invention is to provide a temperature sensor mounting structure which can maintain airtightness without using a grommet or a sealant, reduce the number of parts, and can be easily assembled.

[0005]

According to the present invention, there is provided a temperature sensor mounting structure comprising: a temperature sensor connected to a lead wire; a bracket to which the temperature sensor is mounted; A mounting plate having a sensor insertion hole for use with a temperature sensor and a unit case having an insertion hole for inserting the bracket, wherein the mounting plate is fixed to the unit case. A lead wire insertion hole is formed so as to communicate with the sensor insertion hole, the insertion hole of the unit case is opposed to the lead wire insertion hole of the mounting plate and is closed by the mounting plate, and the sensor insertion of the mounting plate is performed. The hole is closed by the wall surface of the unit case.

[0006]

[Function] Insert the temperature sensor with the lead wire and connector assembled in advance through the sensor insertion hole of the mounting plate, attach it to the tip of the bracket, insert the lead wire into the lead wire insertion hole, and then Sensor with bracket,
Insert it from the bracket insertion hole provided in the unit case of the evaporator, and fix the mounting plate to the unit case. In this case, as a positional relationship for fixing the mounting plate, make sure that the peripheral portions of both the bracket insertion hole and the lead wire insertion hole are in close contact with a part of the lead wire inserted in the lead wire insertion hole for sealing. , The mounting plate is attached to the unit case. Therefore, except for the lead wire insertion hole, both the bracket insertion hole and the sensor insertion hole will be mutually closed by the mounting plate and the unit case, airtightness will be secured, and the grommet and sealing agent as in the conventional case will be secured. Is unnecessary and assembly is easy.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, the mounting structure of the temperature sensor of this embodiment is provided with a bracket insertion hole 12 on the side surface of the evaporator 10 on the downstream side of the unit case 11, and from the bracket insertion hole 12. Bracket 1
3 has a structure in which the temperature sensor 14 attached to the front end of the bracket 3 is inserted, and the mounting plate 15 attached to the base end of the bracket 13 is fixed to the unit case 11. The temperature sensor 14 allows the evaporator 10 to pass through. The temperature of the taken air is detected.

More specifically, the bracket 13 has a U-shaped cross section, a temperature sensor 14 is attached to the tip of the bracket 13, and a lead wire 16 connected to the temperature sensor 14 is provided in the bracket 13. The lead wire 16 is supported by a support piece 13 a provided along the bracket 13 and provided on the bracket 13. A lead wire insertion hole 17 is provided in the mounting plate 15, and the lead wire insertion hole 17 is provided.
The lead wire 16 is inserted through the connector, and the connector 18 is connected to the other end of the lead wire.

The lead wire insertion hole 17 is formed in the lead wire 1.
It is formed in such a size that only 6 can be inserted. Further, the mounting plate 15 is provided with a sensor insertion hole 19 formed to have a size into which the temperature sensor 14 can be inserted. The sensor insertion hole 19 is provided so as to communicate with the lead wire insertion hole 17 described above. Has been.

Then, the lead wire 16 and the connector 18 are previously prepared.
In order to mount the temperature sensor 14 integrally manufactured together with the bracket 13, the temperature sensor 14 is inserted from the sensor insertion hole 19 and mounted in the bracket 13, and then the lead wire 16 is inserted from the sensor insertion hole 19 into the lead wire insertion hole. It moves to 17 and is installed. Further, the mounting plate 15 has the wall surface of the peripheral edge portion of the bracket insertion hole 12 provided in the unit case 11 and the lead wire insertion through which the lead wire 16 is inserted after the temperature sensor is inserted into the bracket insertion hole 12 together with the bracket. By both the wall surface of the peripheral portion of the hole 17,
The lead wire 16 inserted into the lead wire insertion hole 17 is attached to the side surface of the unit case 11 so as to sandwich the lead wire 16 in close contact with each other, and the screw holes 20 are provided at the corresponding positions of the unit case 11 and the mounting plate 15. Screw 2 through 21
It is fixed by 2.

Therefore, both the bracket insertion hole 12 and the sensor insertion hole 19 need to be formed to have a predetermined size, but the mounting plate 15 is provided with the lead wire insertion hole 17, and the mounting plate 15 is attached to the unit case 11. Bracket insertion hole 12 and lead wire insertion hole 1
The mounting plate 15 is mounted at a position where both wall surfaces of 7 closely contact with the periphery of the lead wire 16. As a result, as shown in FIG. 3, the bracket insertion hole 12 is formed by the mounting plate 15, and the sensor insertion hole 19 is formed by the unit case 1.
Since they are mutually closed by 1, the conventional grommet and sealant are not required, the number of parts can be reduced, the assemblability can be improved, and the cost can be reduced.

Next, another embodiment of the present invention will be described. In this embodiment, as shown in FIGS. 4 and 5, the lead wire insertion hole 17 and the sensor insertion hole 19 are provided in the mounting plate 15 at a predetermined distance from each other. The hole 19 and the hole 19 are connected to each other by an elongated hole 23 having a width that allows the lead wire 16 to move. The sensor insertion hole 19 is formed to have a size into which the temperature sensor 14 can be inserted, and the sensor insertion hole 19 is formed.
A screw hole 20 is provided at the position of the unit case 11 corresponding to the sensor insertion hole 19 and the screw hole in the state where the wall surfaces of both holes 12 and 17 are closely attached to the lead wire 16 as in the above embodiment. Mounting plate 1 with screws 22 through 20
5 is attached to the unit case 11.
In other words, the sensor insertion hole 19 has a structure that combines the function of inserting the temperature sensor 14 and the function of a screw hole for mounting the mounting plate 15, and it is not necessary to provide a screw hole for the mounting plate. It has the same effect as above.

[0014]

As described above, according to the present invention, the mounting plate is provided with the lead wire insertion hole connected to the sensor insertion hole,
When mounting the mounting plate, make sure that the unit case and mounting plate are positioned so that the wall surfaces of both the bracket insertion hole and the lead wire insertion hole are in close contact with the lead wire. The insertion holes are closed by the mounting plate and the unit case, making it possible to eliminate the need for grommets and sealing agents as in the past, reducing the number of parts, improving the assemblability, and reducing the cost. Planned.

[Brief description of drawings]

FIG. 1 is a perspective view showing a temperature sensor mounting structure according to a first embodiment.

FIG. 2 is an enlarged perspective view showing a temperature sensor mounting structure.

FIG. 3 is a vertical sectional view showing a temperature sensor mounting structure.

FIG. 4 is an enlarged perspective view showing a temperature sensor mounting structure according to a second embodiment.

FIG. 5 is a vertical sectional view showing a temperature sensor mounting structure.

FIG. 6 is a vertical sectional view showing a conventional temperature sensor mounting structure.

FIG. 7 is a vertical sectional view showing a conventional temperature sensor mounting structure.

[Explanation of symbols]

 10 Evaporator 11 Unit Case 12 Bracket Insertion Hole 13 Bracket 14 Temperature Sensor 15 Mounting Plate 16 Lead Wire 17 Lead Wire Insertion Hole 19 Sensor Insertion Hole

Claims (1)

[Scope of utility model registration request] 1. A temperature sensor connected to a lead wire, a bracket to which the temperature sensor is attached, an attachment plate attached to an end of the bracket and having a sensor insertion hole for inserting the temperature sensor, the temperature sensor, and In a temperature sensor mounting structure comprising a unit case having an insertion hole for inserting a bracket, and the mounting plate fixed to the unit case, a lead wire insertion hole is formed in communication with the sensor insertion hole. The insertion hole of the unit case is opposed to the lead wire insertion hole of the mounting plate and is closed by the mounting plate, and the sensor insertion hole of the mounting plate is closed by the wall surface of the unit case. Temperature sensor mounting structure.