JP2024067349A - On-vehicle component and manufacturing method of the same - Google Patents

Abstract

To provide a technology for improving welding quality in an on-vehicle component including a passage member to which a sensor boss is joined.SOLUTION: An on-vehicle component mounted on a vehicle includes a passage member and a sensor boss. The passage member forms a passage. The passage member is has formed therein an insertion hole for inserting a sensor into the passage from the outside. The sensor boss is configured to hold the sensor inserted into the insertion hole. An edge part forming the insertion hole at the passage member is provided with a protruding part protruding to the outer side of the passage member. The sensor boss is has formed therein a communication passage into which the sensor may be inserted. The sensor boss is joined to an outer surface of the passage member in a state that the communication passage communicates with the insertion hole and at least a part of an inner surface forming the communication passage is in contact with the protruding part.SELECTED DRAWING: Figure 5

Description

This disclosure relates to an on-board component that includes a flow path member to which a sensor boss is joined.

For example, Patent Document 1 describes an intake and exhaust system part equipped with a pipe that forms a flow path for exhaust gas from an internal combustion engine of a vehicle. In the intake and exhaust system part described in Patent Document 1, a sensor boss is joined to the outer periphery of the upper surface of the pipe. When a sensor is inserted into the pipe through a female threaded hole formed through the sensor boss, the sensor is held by the sensor boss.

JP 2018-81053 A

When manufacturing an in-vehicle part that includes a flow path member to which a sensor boss is joined, such as the intake and exhaust system part described in Patent Document 1, the sensor boss is joined to the flow path member by, for example, welding. However, when welding the sensor boss, the sensor boss is abutted against a preset position on the flow path member, but there are cases where the sensor boss is displaced from that position during welding. If welding is performed with the sensor boss misaligned relative to the flow path member, the welding quality may deteriorate.

In addition, such problems can occur not only when the flow path member is a member that forms a flow path for exhaust gas, such as the piping described in Patent Document 1, but also when the flow path member is a member that forms a flow path for something other than exhaust gas.

One aspect of the present disclosure provides a technology for improving welding quality in an on-board component that includes a flow path member to which a sensor boss is joined.

One aspect of the present disclosure is an on-vehicle part that is mounted on a vehicle. The on-vehicle part includes a flow path member and a sensor boss. The flow path member forms a flow path. The flow path member is formed with an insertion hole for inserting a sensor into the flow path from the outside. The sensor boss is configured to hold the sensor inserted into the insertion hole. An edge portion that forms the insertion hole in the flow path member is provided with a protrusion that protrudes to the outside of the flow path member. The sensor boss is formed with a communication passage through which the sensor can be inserted. In addition, the sensor boss is joined to the outer surface of the flow path member in a state in which the communication passage communicates with the insertion hole and at least a portion of the inner surface that forms the communication passage is in contact with the protrusion.

With this configuration, in the manufacturing process of the on-board component, the sensor boss can be joined to the flow path member as follows. That is, the sensor boss is abutted against the outer surface of the flow path member so that at least a portion of the inner surface of the sensor boss that forms the communication passage is in contact with the protrusion, and in this state, the sensor boss can be joined to the outer surface of the flow path member by welding. Therefore, when the sensor boss is welded, the protrusion can restrict the movement of the sensor boss relative to the flow path member, thereby improving the welding quality of the finished on-board component.

In one aspect of the present disclosure, the central axis of the communication passage may be inclined with respect to the outer surface of the flow path member.
With this configuration, the position of the sensor boss relative to the flow path member is relatively easily misaligned when the sensor boss is welded. However, by welding the sensor boss while it is in contact with the outer surface of the flow path member as described above, the welding quality of the finished vehicle-mounted component can be more effectively improved.

In one aspect of the present disclosure, the sensor boss may be joined to the outer surface of the flow path member in a state in which at least a portion of the inner surface forming the communication passage, which is in the forward direction in the direction of action of a component force along the outer surface of the flow path member when a load is applied to the flow path member along the central axis of the communication passage, is in contact with the protrusion.

With this configuration, even if the sensor boss is welded while being pressed toward the flow path member along the central axis of the communication passage in a state in which the sensor boss is in contact with the outer surface of the flow path member as described above during the manufacturing process of the vehicle-mounted part, the protrusion can restrict movement of the sensor boss in the direction in which the component force acts. This can further improve the welding quality of the finished vehicle-mounted part.

In one aspect of the present disclosure, the protrusion may be provided so as to surround the entire periphery of the insertion hole.
According to this configuration, by welding the sensor boss while it is in contact with the outer surface of the flow passage member as described above during the manufacturing process of the on-vehicle component, the movement of the sensor boss can be restricted by the protrusion in any radial direction of the insertion hole, thereby further improving the welding quality of the finished on-vehicle component.

Another aspect of the present disclosure is a method for manufacturing an on-board component to be mounted on a vehicle. The method for manufacturing the on-board component includes abutting a sensor boss on an outer surface of a flow path member that forms a flow path, and joining the sensor boss, which is in abutment with the outer surface of the flow path member, to the outer surface of the flow path member by welding. The flow path member is formed with an insertion hole for inserting a sensor into the flow path from the outside. An edge portion that forms the insertion hole in the flow path member is provided with a protrusion that protrudes to the outside of the flow path member. The sensor boss is formed with a communication passage through which the sensor can be inserted. The sensor boss has an abutment surface that is an end face on one opening side of the communication passage. In addition, the abutment surface of the sensor boss is abutted against the outer surface of the flow path member so that the communication passage communicates with the insertion hole and at least a portion of the inner surface that forms the communication passage contacts the protrusion.

With this configuration, the protrusion can restrict movement of the sensor boss relative to the flow path member when the sensor boss is welded. This improves the welding quality of the finished vehicle component.

In another aspect of the present disclosure, the central axis of the communication passage may be inclined with respect to the contact surface.
When the central axis of the communicating passage is inclined relative to the abutment surface, the position of the sensor boss relative to the flow path member is relatively likely to shift during welding of the sensor boss. However, with the above-described configuration, the welding quality of the finished vehicle-mounted component can be improved more effectively.

In another aspect of the present disclosure, the sensor boss may have an abutment surface that abuts against the outer surface of the flow path member such that at least a portion of the inner surface that forms the communication passage, in the direction of action of a component force along the abutment surface when a load is applied to the abutment surface along the central axis of the communication passage, is in contact with the protrusion.

With this configuration, even when welding the sensor boss while pressing it toward the flow path member along the central axis of the communication passage, the protrusion can restrict the movement of the sensor boss in the direction of the component force. This can further improve the welding quality of the finished vehicle component.

In another aspect of the present disclosure, the protrusion may be provided so as to surround the entire periphery of the insertion hole.
According to this configuration, the protrusion can restrict movement of the sensor boss in any radial direction of the insertion hole during welding of the sensor boss, thereby further improving the welding quality of the finished vehicle component.

FIG. 2 is a schematic perspective view showing a part of an in-vehicle component. FIG. 2 is a schematic exploded perspective view showing a part of an on-vehicle component. FIG. 2 is a schematic side view showing a part of an in-vehicle component. FIG. 11 is a schematic cross-sectional view for explaining a contact step. FIG. 4 is a schematic cross-sectional view for explaining a welding step. FIG. 13 is a schematic exploded perspective view showing a modified example of the protrusion.

Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings.
[1. Configuration of in-vehicle components]
1 to 5 are schematic diagrams showing a joining structure of a sensor boss 3 to a flow path member 2 in an on-vehicle component 1. The on-vehicle component 1 is mounted on a vehicle for use. The on-vehicle component 1 in this embodiment is an exhaust system component. The exhaust system component is a component that constitutes at least a part of the exhaust system of an internal combustion engine of the vehicle. Examples of exhaust system components include an exhaust manifold, an exhaust pipe, a catalytic converter, a muffler, etc.

As shown in FIG. 1, the vehicle-mounted component 1 includes a flow path member 2 and a sensor boss 3. Note that only a portion of the flow path member 2 is shown diagrammatically in the drawing.

The flow path member 2 is a member that forms a flow path. In this embodiment, the flow path member 2 forms a flow path for exhaust gas from the internal combustion engine of the vehicle. The flow path member 2 is made of a plate material. The flow path member 2 is made of metal. The upper surface of the flow path member 2 in the drawing corresponds to the outer surface 20 of the flow path member 2. As shown in FIG. 2, in this embodiment, at least the joining region H on the outer surface 20 of the flow path member 2 is flat. The joining region H is the region on the outer surface 20 of the flow path member 2 where the sensor boss 3 is joined.

The cross-sectional view of the on-vehicle part 1 shown in FIG. 5 is a cross-sectional view taken along the line V-V in FIG. 3. FIG. 4 is an exploded cross-sectional view of the on-vehicle part 1 corresponding to FIG. 5. As shown in FIGS. 4 and 5, an insertion hole 21 is formed in the flow path member 2. The insertion hole 21 is a through hole for inserting a sensor (not shown) into the flow path from outside the flow path member 2. Specifically, the tip of the sensor is inserted into the flow path through the insertion hole 21. In this embodiment, the insertion hole 21 is a round hole. Hereinafter, the portion of the flow path member 2 that forms the insertion hole 21 is referred to as the edge portion 22.

The edge 22 is provided with a protrusion 23 that protrudes outward from the flow path member 2. That is, the protrusion 23 is a portion of the edge 22 that protrudes from the outer surface 20 of the flow path member 2. As shown in FIG. 2, the protrusion 23 is formed so as to surround the entire circumference of the insertion hole 21. The protrusion 23 is formed by burring.

Returning to FIG. 1, the sensor boss 3 is joined to the outer surface 20 of the flow path member 2. The sensor boss 3 is a member configured to hold a sensor inserted into the insertion hole 21. The sensor boss 3 is made of metal. As shown in FIG. 2 and FIG. 4, the sensor boss 3 is cylindrical. The sensor boss 3 is formed with a communication passage 31 through which the tip of the sensor can be inserted. The central axis X of the communication passage 31 is linear. Hereinafter, the end face on one opening side of the communication passage 31 in the sensor boss 3, specifically the end face on the flow path member 2 side, is referred to as the abutment surface 30a. The end face on the other opening side of the communication passage 31 in the sensor boss 3, that is, the end face opposite to the abutment surface 30a, is referred to as the seat surface 30b. In this embodiment, both the abutment surface 30a and the seat surface 30b are planar.

As shown in FIG. 5, the opening formed by the contact surface 30a is configured to be large enough to collectively accommodate the insertion hole 21 and the protrusion 23 in the flow path member 2. In this embodiment, the opening formed by the contact surface 30a is configured to be large enough to fit the protrusion 23 into the communication passage 31 from the contact surface 30a side.

The opening formed by the seat 30b is large enough to allow the tip of the sensor to pass through, but large enough so that the enlarged diameter portion of the sensor cannot pass through. When the tip of the sensor is inserted into the communication passage 31 from the seat 30b side, the enlarged diameter portion of the sensor sits on the seat 30b, and the sensor is held by the sensor boss 3.

4, the central axis X of the communication passage 31 is inclined with respect to the abutment surface 30a. In more detail, the central axis X of the communication passage 31 is inclined with respect to the abutment surface 30a means that an angle is formed between the central axis X of the communication passage 31 and the normal Y of the abutment surface 30a at the intersection point P. The intersection point P is an intersection point between the central axis X of the communication passage 31 and an imaginary plane M1 including the abutment surface 30a. In this embodiment, as described above, both the abutment surface 30a and the seat surface 30b are flat. Therefore, in this embodiment, the central axis X of the communication passage 31 being inclined with respect to the abutment surface 30a can also be said to mean that the imaginary plane M1 including the abutment surface 30a and the imaginary plane M2 including the seat surface 30b intersect with each other.

As described above, the sensor boss 3 is joined to the outer surface 20 of the flow path member 2. More specifically, as shown in FIG. 5, the sensor boss 3 is joined to the outer surface 20 of the flow path member 2 in a state in which the communication passage 31 is connected to the insertion hole 21 and at least a part of the inner surface 30c forming the communication passage 31 is in contact with the protrusion 23. In this embodiment, since the protrusion 23 is fitted into the communication passage 31 from the abutment surface 30a side, the inner surface 30c of the sensor boss 3 is in contact with the protrusion 23 over almost the entire circumference at the end on the abutment surface 30a side. At least the front part of the inner surface 30c of the sensor boss 3 in the acting direction of the component force Fa described later is in contact with the protrusion 23. In addition, the abutment surface 30a abuts against the area of the outer surface 20 of the flow path member 2 that collectively surrounds the insertion hole 21 and the protrusion 23. The area on the outer surface 20 of the flow path member 2 that collectively surrounds the insertion hole 21 and the protrusion 23 corresponds to the bonding area H described above.

In this way, the sensor boss 3 is joined to the outer surface 20 of the flow path member 2 with the abutment surface 30a in contact with the outer surface 20. Therefore, in the in-vehicle component 1, the central axis X of the communication passage 31 is inclined with respect to the outer surface 20 of the flow path member 2. Specifically, the central axis X of the communication passage 31 is inclined with respect to the joining region H on the outer surface 20 of the flow path member 2.

[2. Manufacturing method of in-vehicle parts]
Next, a description will be given of a manufacturing method of the on-vehicle component 1. More specifically, a description will be given of a joining method of the sensor boss 3 included in the manufacturing method of the on-vehicle component 1. The manufacturing method of the on-vehicle component 1 includes a contacting step shown in FIG. 4 and a welding step shown in FIG.

[2-1. Contact process]
As shown in FIG. 4 , in the contact step, the contact surface of the sensor boss 3 is moved so that the communication passage 31 communicates with the insertion hole 21 and at least a part of the inner surface 30 c of the sensor boss 3 comes into contact with the protrusion 33 . 30 a is brought into contact with the outer surface 20 of the flow path member 2 .

In this embodiment, the abutment surface 30a abuts against the outer surface 20 of the flow path member 2 so that the protrusion 23 fits into the communication passage 31 from the abutment surface 30a side. At this time, the inner surface 30c of the sensor boss 3 can contact the protrusion 23 over almost the entire circumference at the end on the abutment surface 30a side, but in particular, the abutment surface 30a abuts against the outer surface 20 of the flow path member 2 so that the front portion of the inner surface 30c in the direction of action of the component force Fa described below contacts the protrusion 23.

In addition, in this embodiment, the contact surface 30a is formed in a planar shape corresponding to the shape of the outer surface 20 (specifically, the joining region H) of the flow path member 2. Therefore, by contacting the contact surface 30a with the outer surface 20 of the flow path member 2 as described above, the contact surface 30a comes into contact with the outer surface 20 of the flow path member 2 with substantially no gap.

[2-2. Welding process]
As shown in Fig. 5, in the subsequent welding process, a pressing member 100 is disposed so as to cover the seat surface 30b of the sensor boss 3 in a state in which the abutment surface 30a is in contact with the outer surface 20 of the flow path member 2. The pressing member 100 is a member for pressing the sensor boss 3 toward the flow path member 2. The pressing member 100 in this embodiment is a clamp. Fig. 5 shows the pressing member 100 in a schematic manner. Note that the pressing member 100 is not limited to a clamp, and may be, for example, a block-shaped jig for pressing the sensor boss 3 toward the flow path member 2.

The sensor boss 3 is then welded to the outer surface 20 of the flow path member 2 while being pressed toward the flow path member 2 along the central axis X of the communication passage 31 by the pressing member 100. This completes the in-vehicle component 1.

[3. Action
In manufacturing the on-vehicle component 1, the sensor boss 3 is brought into contact with the outer surface 20 of the flow passage member 2 at the contact surface 30a, and then joined to the outer surface 20 of the flow passage member 2 by welding. It is conceivable that the position of the sensor boss 3 relative to the member 2 may become misaligned.

However, when the sensor boss 3 is welded to the flow path member 2, the abutment surface 30a is abutted against the outer surface 20 of the flow path member 2 so that at least a portion of the inner surface 30c is in contact with the protrusion 23 of the flow path member 2. Therefore, the protrusion 23 restricts the movement of the sensor boss 3 in the direction along the outer surface 20 of the flow path member 2. In other words, the sensor boss 3 becomes less likely to move in the direction along the outer surface 20 of the flow path member 2.

In this embodiment, the sensor boss 3 has a central axis X of the communication passage 31 inclined relative to the abutment surface 30a. Therefore, compared to a configuration in which the central axis X of the communication passage 31 is not inclined relative to the abutment surface 30a, that is, a configuration in which the central axis X of the communication passage 31 is perpendicular to the abutment surface 30a, the position of the sensor boss 3 is less stable on the outer surface 20 of the flow path member 2. Even in this configuration in which the position of the sensor boss 3 is relatively easily shifted relative to the flow path member 2, when the sensor boss 3 is welded, at least a portion of its inner surface 30c is in contact with the protrusion 23, so that movement of the sensor boss 3 in a direction along the outer surface 20 of the flow path member 2 is restricted.

In particular, in this embodiment, when welding the sensor boss 3, the pressing member 100 is arranged to cover the seating surface 30b of the sensor boss 3, and this pressing member 100 presses the sensor boss 3 toward the flow path member 2 along the central axis X of the communication passage 31. By covering the seating surface 30b with the pressing member 100, spatter generated during welding is prevented from adhering to the seating surface 30b.

On the other hand, because the central axis X of the communication passage 31 is inclined with respect to the abutment surface 30a, the component force Fa along the outer surface 20 of the flow path member 2, out of the load F along the central axis X of the communication passage 31 applied to the sensor boss 3, acts in a direction that moves the sensor boss 3 along the outer surface 20. Even in such a case, the sensor boss 3 abuts against the outer surface 20 of the flow path member 2 so that at least the front part in the acting direction of the component force Fa when the load F is applied to the abutment surface 30a side along the central axis X of the communication passage 31 contacts the protrusion 23, thereby restricting the movement of the sensor boss 3 in the acting direction of the component force Fa. In addition to the component force Fa along the outer surface 20 of the flow path member 2, a component force Fb perpendicular to the outer surface 20 of the flow path member 2 is also shown in FIG. 5 for ease of understanding.

In addition, in this embodiment, the protrusion 23 is formed to surround the entire circumference of the insertion hole 21. Therefore, movement of the sensor boss 3 is restricted in any radial direction in the insertion hole 21.

[4. Effects]
According to the embodiment described above in detail, the following effects can be obtained.
(4a) In the manufacturing method of the on-vehicle component 1, in the abutting step, the abutting surface 30a of the sensor boss 3 is abutted against the outer surface 20 of the flow path member 2 so that the communication passage 31 communicates with the insertion hole 21 and at least a part of the inner surface 30c of the sensor boss 3 is in contact with the protrusion 33. Then, in the subsequent welding step, the sensor boss 3 with the abutting surface 30a abutting against the outer surface 20 of the flow path member 2 is joined to the outer surface 20.

With this configuration, when the sensor boss 3 is welded, at least a portion of its inner surface 30c is in contact with the protrusion 33, so the protrusion 23 can restrict movement of the sensor boss 3 in a direction along the outer surface 20 of the flow path member 2. This improves the welding quality of the finished vehicle component 1.

(4b) The central axis X of the communication passage 31 is inclined relative to the abutment surface 30a. That is, when the abutment surface 30a is in contact with the outer surface 20 of the flow path member 2, the central axis X of the communication passage 31 is inclined relative to the outer surface 20 of the flow path member 2. Since the central axis X of the communication passage 31 is inclined relative to the outer surface 20 of the flow path member 2 in this manner, the height of the sensor boss 3 from the outer surface 20 of the flow path member 2 can be reduced in the completed vehicle-mounted component 1 compared to a configuration in which the central axis X of the communication passage 31 is not inclined relative to the outer surface 20 of the flow path member 2. Therefore, the degree of freedom in the arrangement of the vehicle-mounted component 1 can be increased when mounting the vehicle-mounted component 1 on a vehicle.

On the other hand, during the manufacturing process of the on-board component 1, the central axis X of the communication passage 31 is inclined relative to the abutment surface 30a, so that the position of the sensor boss 3 relative to the flow path member 2 is relatively easily shifted during the welding process. In this way, even in a configuration in which the position of the sensor boss 3 is relatively easily shifted relative to the flow path member 2 when the sensor boss 3 is welded, by applying the manufacturing method described in (4a) above, it is possible to restrict the movement of the sensor boss 3 in the direction along the outer surface 20 of the flow path member 2 by the protrusion 23. Therefore, the welding quality can be improved in the finished on-board component 1.

(4c) In the welding process, the sensor boss 3 is welded while being pressed toward the flow path member 2 by the pressing member 100. Specifically, the sensor boss 3 is pressed toward the flow path member 2 along the central axis X of the communication passage 31 by the pressing member 100. At this time, since the central axis X of the communication passage 31 is inclined with respect to the abutment surface 30a in this embodiment, it is considered that the position of the sensor boss 3 relative to the flow path member 2 is easily shifted due to the component force Fa along the outer surface 20 of the flow path member 2 of the load F applied to the sensor boss 3 along the central axis X of the communication passage 31.

Therefore, in this embodiment, in the abutment process, the sensor boss 3 is abutted against the outer surface 20 of the flow path member 2 so that at least the front portion of the inner surface 30c of the sensor boss 3 in the acting direction of the component force Fa when a load F is applied to the abutment surface 30a side along the central axis X of the communication passage 31 contacts the protrusion 23. With this configuration, when the sensor boss 3 is pressed toward the flow path member 2 along the central axis X of the communication passage 31 in the subsequent welding process, the protrusion 23 can restrict the movement of the sensor boss 3 in the acting direction of the component force Fa. Therefore, the welding quality of the finished vehicle-mounted part 1 can be further improved compared to when the sensor boss 3 is welded in a state where at least the front portion of the inner surface 30c of the sensor boss 3 is not in contact with the protrusion 23.

(4d) The protrusion 23 is provided so as to surround the entire circumference of the insertion hole 21. With this configuration, in the abutment process, the abutment surface 30a of the sensor boss 3 is abutted against the outer surface 20 of the flow path member 2 so that at least a portion of the inner surface 30c of the sensor boss 3 is in contact with the protrusion 33. In the subsequent welding process, the protrusion 23 can restrict movement of the sensor boss 3 in any radial direction in the insertion hole 21. This can further improve the welding quality of the completed vehicle-mounted component 1.

(4e) In this embodiment, the on-vehicle component 1 is an exhaust system component. The sensor boss 3 is joined to the outer surface 20 of the flow path member 2 with the contact surface 30a in contact with the outer surface 20. The entire sensor boss 3 is disposed outside the flow path member 2.

With this configuration, it is expected that high-temperature exhaust gas will flow through the flow path formed by the flow path member 2, but since the sensor boss 3 is not positioned inside the insertion hole 21, it is possible to prevent the exhaust gas from directly hitting the sensor boss 3. In other words, it is possible to prevent the occurrence of heat damage in the sensor boss 3.

In particular, in this embodiment, as described in (4d) above, the protrusion 23 is provided so as to surround the entire circumference of the insertion hole 21. This further prevents exhaust gas from directly hitting the sensor boss 3. In other words, the occurrence of heat damage in the sensor boss 3 can be further suppressed.

5. Other embodiments
Although the embodiments of the present disclosure have been described above, it goes without saying that the present disclosure is not limited to the above-described embodiments and can take various forms.

(5a) In the above embodiment, the protrusion 23 is formed by burring, but the method of forming the protrusion 23 is not particularly limited. For example, the protrusion 23 may be formed by casting.

(5b) In the above embodiment, the protrusion 23 is formed to surround the entire circumference of the insertion hole 21. However, the range in which the protrusion 23 is formed around the insertion hole 21 on the edge portion 22 is not particularly limited.

6, for example, the protrusion 23a may be formed in a range of half the circumference of the insertion hole 21 at the edge 22. In this case, when welding the sensor boss 3, the abutment surface 30a may be abutted against the outer surface 20 of the flow path member 2 so that the front portion of the inner surface 30c of the sensor boss 3 in the direction of action of the component force Fa described above when a load F is applied to the abutment surface 30a along the central axis X of the communication passage 31 contacts the protrusion 23a. Then, in this state, the sensor boss 3 may be joined to the outer surface 20 of the flow path member 2 by welding.

With this configuration, when the sensor boss 3 is welded, the protrusion 23a can restrict the movement of the sensor boss 3 in the direction in which the component force Fa acts. This improves the welding quality of the finished on-board component.

(5c) For example, the protrusion may be formed as a single continuous part around the insertion hole 21, as in the above embodiment and the example shown in FIG. 6, or may be formed as multiple parts spaced apart from one another around the insertion hole 21.

(5d) In the welding process of the above embodiment, the sensor boss 3 is welded in a state in which the sensor boss 3 is pressed toward the flow path member 2 along the central axis X of the communication passage 31 by the pressing member 100. However, in the welding process, the sensor boss 3 does not necessarily have to be pressed toward the flow path member 2 along the central axis X of the communication passage 31 by the pressing member 100. However, as described above, by welding the sensor boss 3 in a state in which the seating surface 30b is covered by the pressing member 100, adhesion of spatter to the seating surface 30b can be suppressed.

(5e) In the above embodiment, the central axis X of the communication passage 31 is inclined with respect to the abutment surface 30a, but it does not necessarily have to be inclined with respect to the abutment surface 30a. For example, the central axis X of the communication passage 31 may be perpendicular to the abutment surface 30a. In other words, the central axis X of the communication passage 31 may coincide with the normal Y of the abutment surface 30a at the intersection point P described above.

(5f) In the above embodiment, the sensor boss 3 is cylindrical, but the shape of the sensor boss is not particularly limited. For example, the sensor boss may have a shape other than cylindrical, in which the communication passage 31 is formed.

(5g) The shape of the flow path member is not particularly limited. That is, the joining area on the outer surface of the flow path member may be planar as in the above embodiment, or may be other than planar. For example, the joining area may be curved. In this case, the contact surface of the sensor boss may be configured to have a shape corresponding to the joining area, rather than being planar as in the above embodiment. The shape of the seating surface of the sensor boss may also be designed appropriately according to the shape of the sensor to be inserted.

(5h) In the above embodiment, the vehicle-mounted part 1 is an exhaust system part. However, the vehicle-mounted part is not limited to an exhaust system part, and may be, for example, a part other than an exhaust system part that includes a flow path member that forms a flow path other than for exhaust gas and a sensor boss 3 joined to its outer surface.

(5i) The functions of one component in the above embodiments may be distributed among multiple components, or the functions of multiple components may be integrated into one component. In addition, part of the configuration of the above embodiments may be omitted. In addition, at least part of the configuration of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.

1...vehicle-mounted component, 2...flow path member, 20...outer surface, 21...insertion hole, 22...edge, 23...projection, 3...sensor boss, 30a...contact surface, 30b...seat surface, 30c...inner surface, 31...communication passage, 100...pressure member, F...load, Fa, Fb...components of force, X...central axis.

Claims (8)

An in-vehicle part to be mounted on a vehicle,
a flow path member that forms a flow path, the flow path member having an insertion hole for inserting a sensor into the flow path from the outside;
a sensor boss configured to hold the sensor inserted into the insertion hole;
Equipped with
a protrusion protruding outward from the flow path member is provided on an edge portion that forms the insertion hole in the flow path member,
The sensor boss is formed with a communication passage through which the sensor can be inserted.
The sensor boss is joined to an outer surface of the flow path member in a state in which the communication passage communicates with the insertion hole and at least a portion of the inner surface forming the communication passage is in contact with the protrusion. The vehicle-mounted component according to claim 1,
The central axis of the communication passage is inclined with respect to an outer surface of the flow path member. The vehicle-mounted component according to claim 2,
the sensor boss is an on-vehicle component joined to the outer surface of the flow path member in a state in which at least a front portion of the inner surface forming the communication passage in a direction of action of a component force along the outer surface of the flow path member when a load is applied toward the flow path member along a central axis of the communication passage is in contact with the protrusion. The vehicle-mounted component according to any one of claims 1 to 3,
The protrusion is provided so as to surround an entire periphery of the insertion hole. A method for manufacturing an on-vehicle part to be mounted on a vehicle, comprising the steps of:
a flow path member that forms a flow path, the flow path member having an insertion hole for inserting a sensor into the flow path from the outside, and a sensor boss having a communication passage through which the sensor can be inserted being brought into contact with an outer surface of the flow path member having an insertion hole formed therein;
joining the sensor boss, which is in contact with the outer surface of the flow path member, to the outer surface of the flow path member by welding;
Equipped with
a protrusion protruding outward from the flow path member is provided on an edge portion that forms the insertion hole in the flow path member,
The sensor boss is
a contact surface which is an end surface on one opening side of the communication passage;
the contact surface is contacted with an outer surface of the flow path member such that the communication passage communicates with the insertion hole and at least a portion of the inner surface forming the communication passage contacts the protrusion. The method for manufacturing an in-vehicle part according to claim 5,
a central axis of the communication passage being inclined with respect to the contact surface. The method for manufacturing an in-vehicle part according to claim 6,
a sensor boss having an inner surface that forms the communication passage and an abutment surface that abuts against the outer surface of the flow path member such that at least a front portion of the inner surface in a direction of action of a component force along the abutment surface when a load is applied to the abutment surface along a central axis of the communication passage contacts the protrusion. A method for manufacturing an on-vehicle part according to any one of claims 5 to 7,
The protrusion is provided so as to surround the entire periphery of the insertion hole.

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