阅读说明：本技术 喇叭口的安装结构 (Mounting structure of horn mouth ) 是由 竹中聪 于 2019-09-11 设计创作，主要内容包括：一种喇叭口(14)的安装结构,该喇叭口(14)的一端侧被安装于被固定于散热器的风扇罩(11),并且另一端侧被安装于被固定于引擎(E)并包围风扇(12)的风扇圈(13),从而覆盖风扇罩(11)与风扇圈(13)之间的间隙；该安装结构包括：第1吸附构件(21),其被设置在喇叭口(14)的另一端侧或风扇圈(13)的外周侧中的一者；以及第2吸附构件(22),其被设置在喇叭口(14)的另一端侧或风扇圈(13)的外周侧中的、未设置有吸附构件的一侧,并通过磁力吸附于第1吸附构件。(A mounting structure of a bell mouth (14), one end side of the bell mouth (14) is mounted on a fan cover (11) fixed on a radiator, and the other end side is mounted on a fan ring (13) fixed on an engine (E) and surrounding a fan (12), thereby covering a gap between the fan cover (11) and the fan ring (13); this mounting structure includes: a 1 st adsorption member (21) provided on one of the other end side of the bell mouth (14) or the outer peripheral side of the fan ring (13); and a 2 nd adsorption member (22) which is provided on the other end side of the bell mouth (14) or on the outer peripheral side of the fan ring (13) on the side where the adsorption member is not provided, and is adsorbed to the 1 st adsorption member by magnetic force.)

1. A kind of horn mouth mounting structure, one end side of the horn mouth is mounted to the fan casing, and another end side is mounted to the fan ring, thus cover the interval between said fan casing and said fan ring, the fan casing is affixed to the heat sink, the fan ring is affixed to the engine and surrounds the fan;

the mounting structure is characterized by comprising:

a 1 st adsorption member that is provided on one of the other end side of the bell mouth or the outer peripheral side of the fan ring and adsorbs by magnetic force, an

A 2 nd adsorption member that is provided on the other of the other end side of the bell mouth or the outer peripheral side of the fan ring on which the 1 st adsorption member is not provided, and that is adsorbed to the 1 st adsorption member by magnetic force.

2. The bell mouth mounting structure of claim 1,

the 1 st adsorption component is a magnet,

the 2 nd adsorption component is made of magnetic metal.

3. The bell mouth mounting structure of claim 2,

the magnet is embedded in the outer peripheral surface of the outer peripheral side of the fan ring;

an iron plate fixed to the outer peripheral surface of the fan ring so as to cover the magnet;

the magnetic metal is embedded in the opening peripheral edge of the bell mouth.

4. The bell mouth mounting structure of claim 3,

the magnets are embedded in the outer peripheral surface of the fan ring in the circumferential direction at a predetermined pitch;

the iron plate is arranged at a part of the outer peripheral surface of the fan ring corresponding to the magnet;

the magnetic metal is provided at a portion of the opening peripheral edge of the bell mouth corresponding to the iron plate.

5. The bell mouth mounting structure of claim 3,

the magnet faces the magnetic metal with the iron plate interposed therebetween.

6. The bell mouth mounting structure of claim 3,

the iron plate is formed wider than the magnet and the magnetic metal.

7. The bell mouth mounting structure of claim 2,

the magnet is embedded in the periphery of the opening of the bell mouth;

at least a part of the fan ring is formed of the magnetic metal.

8. The bell mouth mounting structure of claim 1,

the 1 st adsorption member is an electromagnet provided on an outer peripheral side of the fan ring;

the 2 nd adsorption component is a magnet arranged at the other end side of the bell mouth;

the engine control device further includes a control unit that excites the electromagnet to attract the electromagnet to the magnet when a start request of the engine is issued, and demagnetizes the electromagnet when a stop request of the engine is issued.

Technical Field

The present disclosure relates to a mounting structure of a bell mouth, and more particularly, to a mounting structure of a bell mouth that covers a gap between a fan cover fixed to a radiator and a fan ring fixed to an engine.

Background

As such a mounting structure of the bell mouth, for example, patent documents 1 and 2 disclose a structure in which one end side of the bell mouth is fitted into a fan cover fixed to a radiator, and the other end side of the bell mouth is elastically brought into contact with a fan ring fixed to an engine, thereby mounting the bell mouth between the fan cover and the fan ring.

Documents of the prior art

Patent document

Patent document 1: japanese patent application laid-open No. 2001-123836

Patent document 2: japanese unexamined patent application publication No. 2014-009636

Disclosure of Invention

Technical problem to be solved by the invention

However, relative movement occurs between the fan cover and the fan ring due to engine vibration and the like. Therefore, if the mounting force of the bell mouth cannot completely receive the vibration or relative movement of the engine transmitted to the bell mouth through the fan ring, the bell mouth may be detached and detached from the fan ring or the fan cover.

The disclosed technology aims to prevent the bell mouth from falling off by effectively fixing the bell mouth to the fan ring.

Means for solving the problems

The disclosed technology is a bellmouth mounting structure, one end side of which is mounted to a fan cover fixed to a radiator and the other end side of which is mounted to a fan ring fixed to an engine and surrounding a fan so as to cover a gap between the fan cover and the fan ring; the mounting structure is characterized by comprising: a 1 st adsorption member that is provided on one of the other end side of the bell mouth or the outer peripheral side of the fan ring and adsorbs by magnetic force; and a 2 nd adsorption member that is provided on one side of the other end side of the bell mouth or the outer peripheral side of the fan ring on which the 1 st adsorption member is not provided, and that is adsorbed to the 1 st adsorption member by magnetic force.

Preferably, the 1 st attracting member is a magnet, and the 2 nd attracting member is a magnetic metal.

Further, the magnet may be embedded in an outer peripheral surface of the outer peripheral side of the fan ring, an iron plate may be fixed to the outer peripheral surface of the fan ring so as to cover the magnet, and the magnetic metal may be embedded in an opening peripheral edge portion of the bell mouth.

Further, the magnets may be embedded in the outer peripheral surface of the fan ring at a predetermined pitch in the circumferential direction, the iron plate may be provided at a portion of the outer peripheral surface of the fan ring corresponding to the magnets, and the magnetic metal may be provided at a portion of the opening peripheral edge portion of the bell mouth corresponding to the iron plate.

The magnet may be opposed to the magnetic metal with the iron plate interposed therebetween.

The iron plate may be formed wider than the magnet and the magnetic metal.

Further, the magnet may be embedded in a peripheral edge portion of an opening of the bell mouth, and at least a part of the fan ring may be formed of the magnetic metal.

Preferably, the 1 st attraction member is an electromagnet provided on an outer peripheral side of the fan ring, the 2 nd attraction member is a magnet provided on the other end side of the bell mouth, and the suction device further includes a control unit that, when a start request of the engine is issued, excites the electromagnet to attract the electromagnet and the magnet, and when a stop request of the engine is issued, demagnetizes the electromagnet.

Effects of the invention

According to the technique of the present disclosure, the bell mouth can be effectively fixed to the fan ring, thereby preventing the bell mouth from falling off.

Drawings

Fig. 1 is a schematic rear view showing a fan cover structure to which a bell mouth attachment structure of the present embodiment is applied.

Fig. 2 is a schematic cross-sectional view showing a bell-mouth mounting structure of the first embodiment.

Fig. 3 is an enlarged view of a main portion of fig. 2.

Fig. 4 is a schematic enlarged view of a main part showing a mounting structure of a bell mouth of the first embodiment.

Fig. 5 is a schematic cross-sectional view showing a bell-mouth mounting structure of the second embodiment.

Fig. 6 is a schematic cross-sectional view showing a bell-mouth mounting structure of the third embodiment.

Detailed Description

Hereinafter, a mounting structure of the bell mouth of the present embodiment will be described based on the drawings. The same components are denoted by the same reference numerals, and their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

[ first embodiment ]

Fig. 1 is a schematic rear view showing a fan cover structure 10 to which a bell mouth mounting structure 20 of the present embodiment is applied, and fig. 2 is a schematic sectional view showing the bell mouth mounting structure 20 of the first embodiment, and is also a sectional view taken along line II-II of fig. 1.

The fan cover structure 10 includes: a fan cover 11; a fan 12 disposed between the fan cover 11 and an engine E (shown only in fig. 2); a fan ring 13 fixed to the engine E and surrounding the fan 12; and a bell mouth 14 that covers between the fan cover 11 and the fan ring 13.

The fan cover 11 is formed in a substantially rectangular cylindrical shape, and an opening edge on one end side thereof is fixed to a rear surface of a radiator, not shown, facing the engine E by bolts or the like. Further, an opening 11A having an inner diameter larger than the outer diameter of the fan 12 is formed on the other end side of the fan cover 11. The opening portion 11A is formed in a substantially circular shape, and defines a ventilation space 15 (shown only in fig. 2) for introducing gas into the fan 12.

The fan 12 is disposed so that its rotational axis coincides with the central axis (axial center) of the fan ring 13, and is accommodated inside the fan ring 13. The fan 12 is rotationally driven by the power of the engine E, for example.

The fan ring 13 is formed in a substantially cylindrical shape and is fixed to the engine E with bolts or the like, not shown. Further, on the outer peripheral surface of the fan ring 13, there are formed: a 1 st annular flange portion 13A located on the fan cover 11 side; and a 2 nd annular flange portion 13B located on the engine E side (both shown only in fig. 2). Further, a magnet 21 (an attraction member, a 1 st attraction member) is embedded in the fan ring 13, and the magnet 21 constitutes a part of a bell mouth attachment structure 20 described in detail later. The magnet 21 is preferably formed of a hard magnetic material or a hard magnetic material.

The bell mouth 14 is formed in a substantially cylindrical shape by an elastic member such as a rubber material or a resin material, and covers a gap between the fan cover 11 and the fan ring 13. Therefore, in the bell mouth 14, the opening peripheral edge portion 14A on one end side (radiator side) is fitted and fixed to the annular recess portion 11B of the fan cover 11 over substantially the entire circumference, and the magnetic metal 25 (attracted member, 2 nd attracted member) embedded in the opening peripheral edge portion on the other end side (engine side) is attracted and fixed to the iron plate 23 via the magnetic force of the magnet 21, and the iron plate 23 is fixed to the outer circumferential portion of the fan ring 13. The magnetic metal 25 is preferably made of a ferromagnetic metal or the like. The details of the bell mouth attachment structure 20 will be described below with reference to fig. 3.

[ mounting Structure of Bell mouth ]

Fig. 3 is a schematic cross-sectional view showing a bell mouth attachment structure 20 according to the present embodiment.

As shown in fig. 3, the bell mouth mounting structure 20 of the present embodiment includes: a magnet 21 embedded in an outer peripheral portion of the fan ring 13; an iron plate 23 fixedly provided on an outer peripheral portion of the fan ring 13 so as to cover the magnet 21; and a magnetic metal 25 embedded in the peripheral edge of the engine-side opening of the bell mouth 14.

The magnets 21 are embedded at a predetermined pitch in the circumferential direction in the outer peripheral portion of the fan ring 13, the iron plates 23 are provided at portions of the outer peripheral surface of the fan ring 13 corresponding to the magnets 21, and the magnetic metal 25 is provided at portions of the opening peripheral edge portion of the bell mouth 14 corresponding to the iron plates 23.

At least one pair of the magnets 21, the iron plates 23, and the magnetic metal 25 is disposed diagonally upward and downward, or two pairs of magnets are disposed diagonally upward and downward, or diagonally rightward and leftward. The number and arrangement of the magnets 21, the iron plates 23, and the magnetic metal 25 are not limited to these, and can be set appropriately according to the size of the fan ring 13 or the bell mouth 14.

The magnetic metal 25 is made of, for example, steel, and is embedded in the opening peripheral edge portion of the bell mouth 14 on the engine side. The magnetic metal 25 may be fixed to the opening peripheral edge of the bell mouth 14 by vulcanization adhesion, or may be fitted into a recess formed in advance in the opening peripheral edge of the bell mouth 14. The magnetic metal 25 is attracted to the iron plate 23 excited by the magnet 21.

Next, details of the iron plate 23 and the magnet 21 will be described with reference to fig. 4. The iron plate 23 is fixed to the outer periphery of the fan ring 13 so as to cover the magnet 21 from the outer periphery of the fan ring 13, and functions to collect the magnetic flux of the magnet 21. Namely, the present invention is configured to: by covering the magnets 21 with the iron plates 23, the magnetic metal 25 can be attracted more strongly than a configuration in which the magnets 21 are provided separately.

According to the present embodiment described in detail above, the configuration is such that: the magnet 21 is embedded in the outer peripheral portion of the fan ring 13, the iron plate 23 is fixedly provided on the outer peripheral surface of the fan ring 13 so as to cover the magnet 21, and the magnetic metal 25 is embedded in the peripheral portion of the engine-side opening of the bell mouth 14, whereby the peripheral portion of the engine-side opening of the bell mouth 14 is firmly held by magnetic force in the outer peripheral portion of the fan ring 13. Thus, for example, even if the bell mouth 14 is detached from the fan ring 13 by the relative movement between the fan ring 13 and the fan cover 11 due to vibration of the engine E or the like, the magnetic metal 25 is magnetically attracted to the iron plate 23, and the bell mouth 14 is again located on the fan ring 13, whereby the bell mouth 14 can be effectively prevented from coming off.

Further, the magnetic metal 25 is not provided in a ring shape over the entire circumference of the bell mouth 14 in the circumferential direction, but is provided partially at a predetermined pitch in the circumferential direction. That is, when the bell mouth 14 is assembled to the fan ring 13, the operator can easily attach the bell mouth 14 to the fan ring 13 without having to enlarge the bell mouth 14 with a large force, and the assembly workability can be effectively improved.

[ second embodiment ]

Fig. 5 is a schematic cross-sectional view showing a bell mouth attachment structure 30 of the second embodiment.

As shown in fig. 5, in a bell mouth mounting structure 30 of the second embodiment, a magnet 31 is embedded in an opening peripheral edge portion on the engine side of a bell mouth 14, and at least an outer peripheral portion or the whole of a fan ring 13 is formed of a magnetic metal.

The magnets 31 are provided at a predetermined pitch in the circumferential direction on the peripheral edge of the opening on the engine side of the bell mouth 14. The magnets 31 are arranged at least in a pair at the upper and lower diagonal positions, or in two pairs at the upper, lower, left and right diagonal positions. The number and arrangement of the magnets 31 are not limited to this, and can be set appropriately according to the size of the fan ring 13 or the bell mouth 14. The magnet 31 is embedded in the opening peripheral edge portion on the engine side of the bell mouth 14, but may be fixed to the opening peripheral edge portion of the bell mouth 14 by vulcanization bonding, or may be fitted into a recess formed in advance in the opening peripheral edge portion of the bell mouth 14.

According to the second embodiment described in detail above, the configuration is such that: the magnet 31 is attracted to the outer peripheral surface of the fan ring 13 made of magnetic metal, whereby the bell mouth 14 is firmly held by the fan ring 13. Thus, as in the first embodiment, even if the bell mouth 14 is separated from the fan ring 13 by the relative movement between the fan ring 13 and the fan cover 11 due to vibration of the engine E or the like, the bell mouth 14 is again positioned on the fan ring 13, and the drop-out of the bell mouth 14 can be effectively prevented.

[ third embodiment ]

Next, a bell mouth mounting structure 40 according to a third embodiment will be described with reference to fig. 6.

As shown in fig. 6, the bell mouth mounting structure 40 of the third embodiment includes: an electromagnet 41 provided on the outer peripheral portion of the fan ring 13; a magnet 42 embedded in the peripheral edge of the opening on the engine side of the bell mouth 14; and an Electronic Control Unit (ECU) 100.

The electromagnets 41 are embedded in the outer peripheral portion of the fan ring 13 in the circumferential direction at a predetermined pitch such that the N-pole and the S-pole are aligned in the radial direction of the fan ring 13. The magnet 42 is provided at a portion corresponding to the electromagnet 41 in the opening peripheral edge portion of the bell mouth 14 so that the N-pole or S-pole is directed to the outer peripheral side of the fan ring 13. The magnet 42 may be fixed to the opening peripheral edge portion of the bell mouth 14 by vulcanization bonding, or may be fitted into a recess portion formed in advance in the opening peripheral edge portion of the bell mouth 14.

At least one pair of the electromagnets 41 and the magnets 42 is disposed diagonally upward and downward, or two pairs of the electromagnets and the magnets are disposed diagonally upward, downward, leftward, and rightward. The number and arrangement relationship of the electromagnets 41 and the magnets 42 are not limited to these, and can be set appropriately according to the size of the fan ring 13 or the bell mouth 14.

The excitation of the electromagnet 41 is controlled by an instruction from the ECU 100. The details of the ECU100 will be described below.

The ECU100 performs various controls of the engine E and the like, and is configured to include a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an input port, an output port, and the like. The ECU100 includes an electromagnet control unit 110 as a part of the functional elements.

When a request for starting the engine E is issued by an on operation of the ignition switch 95, the electromagnet control unit 110 energizes the electromagnet 41 with electric power supplied from an unillustrated in-vehicle battery and excites the electromagnet 41. When the electromagnet 41 is excited, the magnet 42 is attracted to the electromagnet 41, and thus the peripheral edge of the engine-side opening of the bell mouth 14 is attracted to and fixed to the outer peripheral portion of the fan ring 13. On the other hand, when a stop request of the engine E is issued by the off operation of the ignition switch 95, the electromagnet control portion 110 stops the energization of the electromagnet 41 and demagnetizes the electromagnet 41 to suppress unnecessary power consumption.

According to the third embodiment described in detail above, the configuration is such that: when a start request of the engine E is issued, the magnet 42 is attracted to the electromagnet 41 by exciting the electromagnet 41, and the bell mouth 14 is firmly held by the fan ring 13. Thus, as in the first and second embodiments, even if the bell mouth 14 is detached from the fan ring 13 by the relative movement between the fan ring 13 and the fan cover 11 due to vibration of the engine E or the like, the bell mouth 14 is again located on the fan ring 13, and the drop-out of the bell mouth 14 can be effectively prevented.

[ others ]

The present disclosure is not limited to the above-described embodiments, and can be modified and implemented as appropriate within a scope not departing from the gist of the present disclosure.

For example, in the third embodiment, the electromagnet control unit 110 may be configured to: when the start of the vehicle running is detected based on a sensor value of a vehicle speed sensor, not shown, the electromagnet 41 is excited.

Although the magnets 21 and 31 and the magnetic metal 25 are partially provided at a predetermined pitch in the circumferential direction, they may be provided in a ring shape over the entire circumference in the circumferential direction.

The present application is based on the japanese patent application filed on 20/9/2018 (japanese application 2018-175696), the contents of which are hereby incorporated by reference.

Industrial applicability

The present invention has an effect of preventing the bell mouth from falling off, and is useful for a mounting structure of the bell mouth, and the like.

Description of the reference numerals

10 fan cover structure

11 Fan cover

12 Fan

13 Fan ring

14 horn mouth

Mounting structure of 20 horn mouths

21 magnet

23 iron plate

25 magnetic metal

30-horn-mouth mounting structure

31 magnet

Mounting structure of 40 horn mouths

41 electromagnet

42 magnet

95 ignition switch

100 ECU

110 electromagnet control part