JP2002257281A - Hose connection structural body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach/detach a hose 20, having a bellows part via a socket 50 in a hose connection structural body. SOLUTION: In this hose connection structural body, the hose 20, having the bellows part 22, is connected to a mounting block 24 via the socket 50. The mounting block 24 is provided with a block side engagement claw 25c, projected in the opening outer circumference end of a block body 25. The socket 50 is provided with a socket body 51 which is cut and divided by a slit 51a to be elastically expanded/shrunk in diameter, and a fixing engagement claw 51b is engaged with the block side engagement claw 25c. For removing the socket 50 from the mounting block 24, a rotation directional force is applied to a pressing operation part 51c for expanding the socket body 51 in diameter, and consequently, the fixing engagement claw 51b is released from the block side engagement claw 25c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose connection structure used for a hose for a radiator of an automobile or the like.

[0002]

2. Description of the Related Art Conventionally, a technique disclosed in Japanese Patent Application Laid-Open No. H11-153278 is known as a hose connecting structure of this kind. FIG. 40 is a sectional view showing a hose connection structure according to a conventional publication. In FIG. 40, a hose 120 is provided in a passage 102 of an engine block 100.
Is connected. The hose 120 has a bellows portion 121 on its outer peripheral portion, and one of the bellows grooves 121a becomes a storage groove 121b, and an O-ring 122 is stored in the storage groove 121b. Hose 120 to engine block 100
To connect to the passage 102 of the engine block 100
41, the bellows 121 is pressed into the storage recess 104, and the fitting 1 is inserted into the mounting holes 124a, 124a of the holding block 124 as shown in FIG.
Insert 28. As a result, the hose 120 is prevented from being pulled out of the storage recess 104. In this state, the bellows portion 121 is compressed and expanded in the radial direction to press the O-ring 122 against the wall surface of the storage recess, and
2 seals between passage 102 and hose 120.

However, the above-described conventional hose connection structure has a problem in that the work of attaching and detaching the stopper 128 to and from the narrow mounting holes 124a of the holding block 124 is troublesome.

[0004] Another conventional technique is disclosed in Japanese Unexamined Patent Publication No.
As described in Japanese Patent No. 50482, a hose in which a first engaging claw made of a separate member is integrated by insert molding using a blow mold or the like, and a mating member in which a second engaging claw is formed on the outer periphery are provided. There is also known a configuration in which a hose is connected to a passage of a mating member by engaging the first engagement claw with the second engagement claw.

However, in this conventional technique, it is necessary to insert the first engaging claw into a blow mold of the hose and to integrate them at the time of forming the hose, so that the mold becomes complicated and an insert step is added. As a result, the production cost rises. In addition, there is another problem that a special jig is separately required to remove the hose once connected.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a hose connection structure which can be easily attached and detached, does not come off easily, and further reduces the cost. Aim.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. According to the present invention, there is provided a hose connecting structure for connecting a hose having a bellows portion to another passage. A mounting block having a block body connected and having a mounting hole, and a block-side engaging claw protruding from an outer peripheral end of the opening of the block main body; and covering the outer periphery and the bellows of the mounting block, and elastically expanding. A socket main body formed to be diametrical, a fixing engaging claw formed on the socket main body and engaging with the block-side engaging claw, and a socket side engaging formed on the periphery of the opening of the socket main body and engaging with the bellows portion. And a socket for engaging the socket side engaging portion with the bellows portion inserted in the mounting hole, and mounting the hose in the mounting hole in a state where the hose is sealed in the passage,
The socket is characterized in that, from the state of being mounted on the mounting block, the fixing engaging claw is disengaged from the block-side engaging claw by expanding the diameter of the socket body.

[0008] In the hose connection structure according to the present invention,
By engaging the socket-side engaging portion to the bellows portion, attaching the hose to the socket. Then, a socket fitted with a hose, is pushed into the mounting block, together with the bellows portion is inserted into the mounting hole, the fixing engagement pawls of the socket is engaged with the block-side engagement pawl. As a result, the socket is attached to the attachment block, and the hose is connected to another passage.

The socket is detached from the mounting block by expanding the diameter of the socket body and pulling it out of the mounting block. That is, when the diameter of the socket body is increased, the fixing engagement claw can be detached from the block-side engagement claw by expanding beyond the outer diameter of the block-side engagement claw. In this way, the socket can be easily removed from the mounting block by applying a force for expanding the diameter of the socket body without requiring a dedicated jig. Moreover, the socket is
Since it is formed separately from the hose, the insert process is not required, and the production is simplified.

[0010] The socket body may have various configurations as a preferred embodiment capable of elastically expanding the diameter. For example, the socket body may be divided into slits to form a C-shaped cross section, or may be divided into a plurality of arcs. It is possible to adopt a configuration in which the arcs are formed and the arcs are connected by an arch.

The following various configurations can be adopted as auxiliary suitable means for expanding the diameter of the socket body. (1) The mounting block may be configured to include a stopper for stopping one end of the socket main body when the socket main body is rotated relative to the mounting block. (2) The socket may be configured to include a pressing operation unit for applying a rotating force to the socket body. (3) The mounting block may be configured to include a riding platform that moves the socket body to the outer diameter side when the socket is rotated. (4) The mounting block can be configured to include a diameter-enlarging projection that presses the socket main body so as to expand its diameter when the socket main body is rotated relative to the mounting block. (5) The socket may have a configuration including a guide portion for guiding the projection for diameter expansion.

Further, as another aspect, it is possible to adopt a configuration in which a diameter expansion regulating member which is attached to the socket body over the slit and regulates the diameter expansion of the socket body is provided.
With this configuration, the socket body divided by the slit does not increase in diameter even when subjected to a large force in the direction in which the hose is pulled out, so that the hose can be prevented from coming off. In addition, by configuring the diameter expansion restricting member so that it cannot be engaged with the socket unless the socket is completely mounted on the block main body, the mounting operation can be reliably performed.

As a preferred mode of the diameter expansion regulating member, an arc-shaped regulating member following the outer shape of the socket body and an outer surface of the socket body formed on the inner peripheral surface of the regulating member body are engaged with each other. In addition, a configuration including an engaging portion that can be fitted in the same direction as the insertion direction of the hose can be adopted. Further, the diameter expansion regulating member may have a configuration provided with a pressing operation portion for projecting from the outer surface of the regulating member main body and applying a force for detachment in the insertion direction. The pressing operation portion facilitates the work of attaching and detaching the diameter expansion regulating member to and from the socket.

In another preferred embodiment, there is provided a temporary fixing means which is provided over the block main body and the diameter expansion restricting member, and temporarily fixes the diameter expansion restricting member to the socket main body in a state where the hose is not attached to the socket. Configuration can be taken. With this configuration, if the diameter expansion restricting member is temporarily fixed to the socket when the socket and the diameter expansion restricting member are conveyed, the parts are not separated and the handling becomes easy. As a preferred embodiment of the temporary fixing means, a configuration in which the diameter expansion regulating member is temporarily fixed halfway in the insertion direction can be adopted.

As another preferred embodiment of the diameter expansion restricting member, a restricting member main body having an arc surface formed so as to follow the outer surface of the socket main body, and an engaging member projecting from the arc surface and engaging with the socket main body. A configuration including a mating pin, a configuration in which the wire is stretched over a slit, and a wire is bent and engaged with the socket body can be adopted.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the present invention will be described below based on examples.

(1) First Embodiment FIG. 1 is a view showing the periphery of an automobile engine using a hose connection structure according to a first embodiment of the present invention. In FIG. 1, a cooling passage 1 for sending cooling water to a radiator 12 is provided at an end of an engine block 10 a of the engine 10.
0b is formed, and a radiator hose 14 is connected to the cooling passage 10b. Also, the cooling passage 10b
Is connected to a bypass hose 20 branched from the radiator hose 14. This hose 20
When the temperature of the engine 10 is low, the cooling water is bypassed to avoid flowing the cooling water to the radiator 12.

FIG. 2 is a half sectional view showing a place where the cooling passage 10b of the engine block 10a and the hose 20 are connected. As shown in FIG. 2, a hose 20 is connected to the cooling passage 10b using a seal member 23, a mounting block 24, and a socket 50.

Next, individual components will be described.
FIG. 3 is a sectional view showing an end of the hose 20. Hose 2
0, a predetermined length to the end of the common general portion 21 of the bellows portion 22
Is formed. A sealing member 23 composed of an O-ring is mounted in the bellows groove 22a of the bellows portion 22.
As the resin material of the bellows portion 22, for example, nylon 12
(PA12) or polyphenylene sulfide (PP
S) is used as a single layer, or PPS is used as an inner layer,
2 can be used as an outer layer.

FIG. 4 is a perspective view showing the mounting block 24. The mounting block 24 includes a cylindrical block body 25.
And a flange 26 formed from the end of the block main body 25 to the outer peripheral side, and these are integrally formed of metal. As shown in FIG. 2, the block main body 25 includes a mounting hole 25a for inserting the hose 20, and a passage 25b connected to the mounting hole 25a. The passage 25b is connected to the cooling passage 10b. You. The flange 26 is a portion for mounting the mounting block 24 to the engine block 10a, and has through holes 26a for inserting the bolts 27.

At the outer peripheral end of the opening of the block body 25, a block-side engaging claw 25c for mounting the socket 50 is provided so as to protrude all around. Further, as shown in FIG. 4, a stopper 25d projecting in a rectangular cross section is provided on a part of the block-side engaging claw 25c.

FIG. 5 is a perspective view showing the socket 50, FIG. 6 is a view as seen from the arrow d1 in FIG. 5, and FIG. 7 is a view as seen from the direction of the arrow d2 in FIG. The socket 50 is a member for engaging with the bellows portion 22 of the hose 20 and attaching to the attachment block 24. The socket 50 includes a socket body 51 having a C-shaped cross section that is cut by a slit 51a. The socket body 51 is formed of a resin material capable of elastically expanding the diameter, for example, polypropylene, polyamide, polycarbonate, or the like. A socket-side engaging portion 52 that engages with the bellows portion 22 (FIG. 2) to prevent the hose 20 from being pulled out is formed around the opening of the socket body 51. As shown in FIGS. 2 and 7, a fixing engagement claw 51 b that engages with the block-side engagement claw 25 c and engages with the mounting block 24 is formed at the inner end of the opening of the socket body 51. The fixing engagement claws 51b are provided at four locations at equal intervals in the circumferential direction. A pressing operation portion 51c is formed on the outer periphery of the socket main body 51 close to the slit 51a. The pressing operation portion 51c is provided so as to protrude from the outer periphery of the socket main body 51 so that a force in a rotating direction that expands the diameter of the socket main body 51 can be applied by a finger.

Next, the operation of connecting the hose 20 to the cooling passage 10b of the engine 10 will be described. FIG. 8 is a half sectional view showing a state before the hose connection structure is assembled. First, the mounting block 24 is connected to the engine block 10.
a, bolts 27, 2 are inserted into through holes 26a, 26a.
7, the mounting block 24 is fixed to the engine block 10a by fastening with bolt holes 10c, 10c.

Next, the seal member 23 is attached to the bellows groove 22 a of the hose 20, and the opening 52 of the socket 50 is further inserted.
Press in the end of the hose from a. At this time, since the socket body 51 is divided by the slits 51a, the diameter of the socket body 51 is expanded, so that the bellows portion 22 is easily press-fitted, and the bellows portion 22 is easily inserted into the socket 50. Then, the socket side engaging portion 52 engages with one bellows groove 22 a of the bellows portion 22. Subsequently, when the socket 50 on which the hose 20 is mounted is pushed into the mounting block 24, the bellows portion 22 is inserted into the mounting hole 25a, and the fixing engaging claw 51b of the socket 50 is moved to the block-side engaging claw 25c. Engages. At this time, as shown in FIG. 9, which is an end view taken along line 9-9 in FIG. 2, the four locking engagement claws 51b are engaged with the block-side engagement claws 25c, and the socket 50 is attached to the attachment block 24. Thereby, the seal member 23 is brought into a sealed state in which the seal member 23 is in close contact with the inner wall of the mounting hole 25a, and the hose 20 is connected to the engine block 1.
0a is connected to the cooling passage 10b.

According to the hose connecting structure according to the first embodiment, the connecting operation of the hose 20 is performed by the mounting block 24.
Can be easily performed simply by pushing the socket 50 into the mounting block 24.

Next, a description will be given of operations to remove the socket 50 from the mounting block 24. From the state of FIG. 9, FIG.
As shown in FIG. 6, when a force in the rotation direction is applied to the pressing operation portion 51c of the socket 50, the slit 51 of the socket body 51 is formed.
The end of "a" is stopped by the stopper 25d, and the diameter of the socket body 51 is increased. In this state, the fixing engagement claw 51
b can be expanded from the outer diameter of the block-side engaging claw 25c and removed from the block-side engaging claw 25c. That is,
Although the fixing engagement claw 51b is firmly engaged with the block-side engagement claw 25c, the socket 50 can be easily removed from the mounting block 24 by applying a force in the rotation direction to the pressing operation portion 51c. .

Therefore, according to the first embodiment, the socket 50 can be mounted by being previously mounted on the bellows portion 22 and then pushed into the mounting block 24.
The socket 50 can be detached from the mounting block 24 by applying a force in the rotation direction to c to expand the diameter of the socket 50, so that a special jig is not required, and the workability of attachment and detachment is excellent. And socket 5
0 is formed separately from the hose 20, so that the insert process as described in the related art is unnecessary and the manufacturing is simplified.

(2) Second Embodiment FIG. 11 is a perspective view showing a mounting block 24B according to a second embodiment, and FIG. 12 is a side view of the mounting block 24B. The second embodiment is characterized by the shape of the mounting block 24B for removing the socket 50B. 11 and 12, a stopper 25Bd protrudes from the outer peripheral end of the opening of the mounting block 24B.
A riding stand 25Be is protruded in the circumferential direction with a width of 30 ° in the vicinity of Bd. One end of the platform 25Be
It has an inclined surface 25Bf. FIG. 13 shows a socket 50B.
FIG. 14 is a side view showing the socket 50B. A slit 51Ba having the same width as the riding platform 25Be is formed in the socket body 51B of the socket 50B.

Since the operation of connecting the hose 20 to the mounting block 24B by the socket 50B is the same as that of the first embodiment, the operation of removing the socket 50B from the mounting block 24B will be described. When a rotational force is applied to the pressing operation portion 51Bc of the socket body 51B from the connection state of FIG. 15, the end of the slit 51Ba runs on the riding platform 25Be as shown in FIG.
Stop at. As a result, the center axis of the socket body 51B approaches the center axis of the mounting block 24B, that is, the diameter of the socket body 51B is increased in a shape close to a concentric circle. Therefore, socket 50
B is a fixing engagement claw 51B without increasing the diameter expansion amount.
b can be easily removed from the block side engaging claw 25Bc.

(3) Third Embodiment FIG. 17 is a perspective view showing a mounting block 24C according to a third embodiment, FIG. 18 is a half sectional view of a hose connection structure, and FIG. 19 is a side view of a socket 50C. It is. The third embodiment is characterized in that the diameter of the socket 50C is restricted. In FIG. 17, projections 25Cg, 25Cg for diameter expansion are formed on the outer peripheral end of the opening of the mounting block 24C. On the other hand, the socket 50 shown in FIGS.
On the inner circumference of the C socket body 51C, there is a projection 25C for diameter expansion.
g, 25Cg are formed. The guide portions 54C, 54C are grooves formed on the inner peripheral surface of the socket body 51C, and include an introduction groove 54Ca formed in the axial direction, and an inclined groove formed in the circumferential direction by bending in a direction perpendicular to the introduction groove 54Ca. 54Cb.

The socket 50C is mounted on the mounting block 24C by aligning the guide grooves 54C of the guides 54C, 54C of the socket 50C with the diameter expansion projections 25Cg, 25Cg, and then pushing the socket 50C. As a result, the fixing engagement claws 51Cb are engaged by climbing over the block-side engagement claws 25Cc (the state of FIG. 20). Mounting block 24 with socket 50C
To remove it from C, first, as shown in FIG. 21, the socket 50C is rotated. As a result, the diameter expansion projection 25Cg,
25Cg rides on the inclined groove 54Cb of the guide portions 54C, 54C to expand the diameter of the socket body 51C. Thereafter, when the socket 50C is pulled out in the axial direction with respect to the mounting block 24C, the fixing engagement claw 51Cb is
Deviates from 5Cc.

According to the third embodiment, the socket body 51
Since the diameter expansion amount of C depends on the height when the diameter expansion protrusions 25Cg, 25Cg are climbed, the socket body 51C does not become too large and is not damaged.

(4) Fourth Embodiment FIG. 22 is a side view showing a state before a socket 50D is mounted on a mounting block 24D according to a fourth embodiment. The fourth embodiment is characterized by the shape of the guide portion of the third embodiment. That is, two L-shaped guide portions 54D (one is indicated by a broken line) are formed on the inner peripheral surface of the socket main body 51D in two axially symmetrical positions. Each guide section 54
D is a U-shaped introduction groove 54Da, a diameter expansion table 54Db,
And a positioning recess 54Dc. FIG. 23 shows FIG.
It is explanatory drawing explaining the location along the bb line of the socket 50D. The introduction groove 54Da is formed so as to be inclined in the axial direction from the end of the socket body 51D. Diameter expansion table 54
Db is a base projecting radially inward from the introduction groove 54Da and the positioning recess 54Dc to expand the diameter of the socket body 51D. The positioning recess 54Dc is a recess for positioning the diameter-enlargement projection 25Dg.

In order to mount the socket 50D to the mounting block 24D, the following route is taken. That is, the guide groove 54Da of the guide portion 54D is aligned with the diameter-enlarging projection 25Dg, the socket 50D is pushed in, and the socket 5D is further pressed.
0D is rotated to position the projection 25Dg for diameter expansion in the positioning recess 5.
Positioning is performed at 4Dc. At this time, the diameter expansion projection 25Dg
After passing through the diameter expanding table 54Db, the fixing engagement claw 51D
b engages with the block side engaging claw 25Dc. On the other hand, to remove the socket 50D from the mounting block 24D, the following path is taken. That is, the socket 50D is pulled out after rotating in the reverse direction. At this time, when the diameter expansion projection 25Dg rides on the diameter expansion base 54Db of the guide portion 54D, the socket body 51D expands in diameter, and the fixing engagement claw 51Db is disengaged from the block side engagement claw 25Dc. Also in this embodiment, the diameter expansion amount of the socket body 51D is determined by the diameter expansion protrusion 25.
Since Dg depends on the height when the vehicle rides on the diameter expansion table 54Db, the diameter of the socket body 51D does not increase too much.

(5) Fifth Embodiment FIG. 24 is a perspective view showing a mounting block 24E according to a fifth embodiment, FIG. 25 is a perspective view showing a socket 50E, and FIG.
6 is a side view of the socket 50E. A fifth embodiment is:
The shape of the socket 50E is characteristic. In FIG. 24, stoppers 25Ed and 25Ed are formed axially symmetrically at the outer peripheral end of the opening of the mounting block 24E. on the other hand,
The socket 50E shown in FIG.
1Ea, the slits 51Ea, 51Ea between the arcs are formed by arches 53E, 53E.
It is configured by connecting with E. Arch 53
E and 53E have a shape curved from the center to the outer peripheral side,
The stoppers 25Ed and 25Ed are formed so as to be elastically bent.

From the state in which the socket 50E shown in FIG. 27 is mounted on the mounting block 24E, as shown in FIG.
When the socket body 51E is pressed toward the d and 25Ed, the socket body 51E expands in diameter, and the locking engagement claw 5
1Eb comes off. The amount that the arches 53E and 53E can press is regulated by the stoppers 25Ed and 25Ed.
The amount of diameter expansion of the socket body 51E is determined according to the amount of deformation of the arches 53E, 53E, so that the diameter of the socket body 51E does not increase too much and does not cause damage. Further, since the socket body 51E is connected by the arches 53E, 53E, the mechanical strength and the engaging force with the mounting block 24E and the bellows part are strong. As a modified example of the fifth embodiment, in addition to the configuration of applying an external force to the arches 53E, 53E on both sides, the diameter increasing projections 25Cg, 25Cg and the guide portion as in the third embodiment (see FIG. 20) are provided. 54C, 54C, or the diameter increasing projection 25Dg and the guide portion 54D as in the fourth embodiment (see FIG. 23) may be provided, and the diameter may be increased by rotating the socket.

(6) Sixth Embodiment FIG. 29 is a perspective view showing a socket 50F and a diameter expansion restricting member 60F according to a sixth embodiment. The sixth embodiment is different from the sixth embodiment in that a diameter expansion restricting member 60 for restricting the diameter of the socket 50F is increased.
F has a feature in its configuration. In FIG. 29, a first locking and fixing portion 55Fa and a second locking and fixing portion 55Fb are formed on the outer peripheral portion of the socket body 51F of the socket 50F with the slit 51Fa interposed therebetween. First locking fixing part 5
5Fa is formed in a groove having a narrow opening along the insertion direction and has a nail at an open end. Second locking and fixing portion 55Fb
Are ridges along the insertion direction and are narrow nails at the base. The diameter expansion restricting member 60F is a member that restricts the diameter expansion of the socket 50F by engaging with the first and second locking fixing portions 55Fa and 55Fb, and includes an arc-shaped restricting member main body 61F and a restricting member main body. An engaging claw 61Fa and an engaging groove 61Fb protruding from the inner peripheral side of 61F are provided. The engaging claw 61Fa is engaged with the first locking and fixing portion 55Fa, and the engaging groove 61Fb is formed with the second locking and fixing portion 55Fb.
It is formed so that it may be engaged with.

From the state where the socket 50F is assembled to the mounting block and the hose, as shown in FIG. 30, the engagement claws 61Fa and the engagement grooves 61Fb of the diameter-restricting member 60F are formed.
Of the first locking and fixing portion 55Fa and the second locking and fixing portion 55
By engaging with Fb, the diameter expansion restricting member 60F is externally mounted on the socket 50F, and restricts the diameter expansion of the socket 50F. Thus, even if a large force is applied in the direction in which the hose comes off, the diameter of the socket 50F does not increase, so that the hose can be prevented from coming off.

The outer diameter of the socket 50F when it is completely mounted on the block body is a predetermined dimension. If the outer diameter is not within this range, the diameter-increasing restricting member 60F cannot be engaged with the socket. Can be performed reliably.

(7) Seventh Embodiment FIG. 31 is a perspective view showing a socket 50G and a diameter expansion regulating member 60G according to a seventh embodiment. The seventh embodiment is a modification according to the sixth embodiment. Socket 50
First and second locking and fixing portions 55G formed on the outer periphery of G
a and 55Gb have the same shape with the slit 51Ga interposed therebetween, that is, claws are provided along the guide groove and protrude on both sides. Further, the diameter expansion restricting member 60G includes the first and second
Engagement ridges 61Ga and 61Gb with claws are provided on the inner periphery for engaging with the locking and fixing portions 55Ga and 55Gb. Further, a pressing operation portion 61Gc protrudes from the outer periphery of the diameter expansion regulating member 60G. Also according to this embodiment, the diameter expansion regulating member 6
0G can prevent the diameter of the socket 50G from expanding and increase the hose retaining effect. In addition, the pressing operation unit 61G
“c” facilitates the work for mounting to and detaching from the socket 50G.

(8) Eighth Embodiment FIG. 32 is a perspective view showing a socket 50H and a diameter expansion restricting member 60H according to an eighth embodiment, and FIG.
Is a perspective view showing the H. The eighth embodiment is a modification according to the sixth embodiment, and has a function of temporarily fixing the diameter expansion restricting member 60H to the socket 50H.

A first locking fixing portion 55Ha and a second locking fixing portion 55Hb are formed in the outer peripheral portion of the socket main body 51H of the socket 50H. Second locking fixing portion 55
The groove of Hb is formed shorter than the first locking and fixing portion 55Ha. The socket body 51H has a recess 56Ha and a recess 56Hb which are continuous with the grooves of the first and second locking and fixing portions 55Ha and 55Hb, respectively. On the side wall facing the slit 51Ha of the socket 50H, a temporary fixing projection 57H for temporarily fixing the diameter expansion regulating member 60H is protrudingly provided.

FIG. 34 is a perspective view of the diameter expansion restricting member 60H viewed from the inner peripheral side. The diameter-enlarging regulating member 60H has a first engaging ridge 61Ha and a second engaging ridge 61Hb formed on the inner periphery of the regulating member main body 61H. The first and second engaging projections 61Ha and 61Hb are formed so as to engage with grooves having different lengths of the first and second locking and fixing portions 55Ha and 55Hb shown in FIG. The two engagement ridges 61Hb are shorter than the first engagement ridges 61Ha. Further, the first and second engaging ridges 61Ha, 6
A guide ridge 62H is arranged between 1Hb.
The guide protrusion 62H is formed to be inserted into the slit 51Ha. Further, first and second temporary fixing protrusions 62Ha and 62Hb are formed on the side surface of the guide ridge 62H to engage with the temporary fixing protrusion 57H of the socket 50H.

FIG. 35 is a perspective view for explaining that the diameter-increasing restricting member 60H is at the temporary fixing position. Diameter expansion regulating member 60
In the temporary stop position of the H (FIG. 35 (A)), the first temporary retaining projections 6
2Ha (FIG. 34) climbs over the temporary fixing projection 57H (FIG. 33) and is between the second temporary fixing projection 62Hb. In this state, the first engaging ridge 61Ha enters the first locking and fixing portion 55Ha halfway, and the second engaging ridge 61Hb does not enter the second locking and fixing portion 55Hb.

Then, in order to fix the socket 50H and the hose from the temporary fixing position, the diameter expansion restricting member 60H as shown in FIG.
The diameter of Ha is reduced so as to reduce the interval, and the socket is further pushed in the axial direction of the socket 50H. That is, the first engagement ridge 61H
a is further inserted into the groove of the first locking / fixing portion 55Ha, and the diameter-increasing regulating member 60H is further pushed into the second locking / fixing portion 55Ha.
The engaging ridge 61Hb is pushed into the groove of the second locking and fixing portion 55Hb. As a result, the diameter expansion restricting member 60H is
Hose must be securely stopped without expanding H.

According to this embodiment, when the socket 50H and the diameter expansion regulating member 60H are transported, the diameter expansion restriction member 60H
Is temporarily fixed to the socket 50H, the parts can be handled integrally, and the transportation and mounting work can be simplified.

(9) Ninth Embodiment FIG. 36 is a perspective view showing a socket 50J and a diameter expansion regulating member 60J according to a ninth embodiment. The ninth embodiment is characterized in the configuration of the diameter expansion regulating member 60J. Note that the diameter expansion restricting member 60J is shown inverted 180 °. Engagement holes 56Ja, 56Ja are formed on the outer peripheral surface of the socket body 51J of the socket 50J, and the engagement holes 5Ja are formed on the front surface thereof.
6Jb and 56Jb are formed over the slit 51Ja, respectively. The diameter expansion restricting member 60J has a curved surface 61Ja following the outer peripheral surface and the front surface of the socket body 51J.
61Jb and the diameter expansion restricting member 60J formed. Further, on the inner peripheral surface of the regulating member main body 61J, engagement pins 62Ja, which are inserted into the engagement holes 56Ja, 56Ja,
62Jb is protruded.

In the present embodiment, the engagement pins 62Ja and 62Jb of the diameter expansion restricting member 60J are aligned with the socket 50J, and the engagement holes 56Ja and 56Jb are fitted and inserted.
The hose can be fixed at the same time when the diameter expansion regulating member 60J is mounted on the socket 50J.

(10) Tenth Embodiment FIG. 37 is a perspective view showing a socket 50K and a diameter expansion regulating member 60K according to a tenth embodiment. The tenth embodiment has a feature in the configuration of the diameter expansion restricting member 60K formed by bending a steel wire. The socket 50K has a hole and a groove for mounting the diameter expansion regulating member 60K. That is, in the socket body 51K,
Press-fit groove 56Ka formed along slit 51Ka
And a recess 57K connected to one end of the press-fit groove 56Ka, and a fitting hole 5 formed in the axial direction with the slit 51Ka therebetween.
6 Kb is formed. In the recess 57K, a locking claw 5 for engaging with one end of the diameter expansion regulating member 60K to prevent it from being removed is provided.
7Ka is formed. The diameter expansion restricting member 60K has a shape obtained by bending a steel wire, and includes a press-fit straight portion 61Ka that is press-fitted into the press-fit groove 56Ka. One end of the press-fit linear portion 61Ka is bent so that the locking claw 5 of the recess 57K is bent.
The locking end 61Kb is engaged by 7Ka.
The other end of the press-fit linear portion 61Ka has a slit 51Ka.
Is bent so as to straddle and is a fitting end 61Kc inserted into the fitting hole 56Kb.

FIG. 38 is a perspective view for explaining that the diameter-increasing restricting member 60K is at the temporary fixing position. Diameter expansion regulating member 60
At the K temporary fixing position, the press-fit straight portion 61Ka is
Ka is press-fitted, and the locking end 61Kb is not over the locking claw 57Ka.
It is assumed that it is not inserted at 6 Kb. As a result, the diameter-increasing restricting member 60K is temporarily fixed in a state in which no looseness occurs in the socket 50K. Then, as shown in FIG.
By pushing the diameter expansion regulating member 60K in the direction of the arrow,
The locking end 61Kb rides over the locking claw 57Ka, and the insertion end 61Kc is inserted into the insertion hole 56Kb, so that the diameter expansion regulating member 60K restricts the diameter expansion of the socket 50K.

The present invention is not limited to the above-described embodiment, but can be implemented in various modes without departing from the gist of the present invention. For example, the following modifications are possible.

In the above embodiment, the configuration applied to the connection between the engine and the radiator has been described, but it is needless to say that the configuration can be applied to various connection structures. Here, the mounting block may be formed integrally with the member to be mounted or the member to be mounted separately or may be integrally formed with an engine or a radiator, or may be integrally formed by means such as welding or welding. It may be configured in a typical manner. In this case, the mounting block is made of the same material as the component to be mounted, namely aluminum in the case of an engine,
In the case of a radiator, it is preferably formed of a resin.

[Brief description of the drawings]

FIG. 1 is a view showing the vicinity of an automobile engine using a hose connection structure according to a first embodiment of the present invention.

FIG. 2 is a half sectional view showing a portion connecting a cooling passage 10b and a hose 20 of an engine block 10a.

FIG. 3 is a cross-sectional view showing an end of the hose 20.

4 is a perspective view showing a mounting block 24.

FIG. 5 is a perspective view showing a socket 50.

FIG. 6 is a diagram viewed from an arrow d1 in FIG. 5;

FIG. 7 is a view as seen from the direction of arrow d2 in FIG. 5;

FIG. 8 is a half sectional view showing a state before a hose connection structure is assembled.

FIG. 9 is an explanatory diagram illustrating a state in which the socket 50 is mounted on the mounting block 24.

10 is an explanatory diagram illustrating an operation of removing the socket 50 from the state of FIG.

FIG. 11 is a perspective view showing a mounting block 24B according to a second embodiment.

FIG. 12 is a side view of a mounting block 24B.

FIG. 13 is a perspective view showing a socket 50B.

FIG. 14 is a side view showing the socket 50B.

FIG. 15 is an explanatory diagram illustrating a state where the socket 50B is attached to the attachment block 24B.

16 is an explanatory diagram illustrating an operation of removing the socket 50B from the state of FIG.

FIG. 17 is a perspective view showing a mounting block 24C according to a third embodiment.

FIG. 18 is an explanatory view of a hose connection structure.

FIG. 19 is a side view of the socket 50C.

FIG. 20 is an explanatory diagram illustrating a state in which a socket 50C is mounted on a mounting block 24C.

21 is an explanatory diagram illustrating an operation of removing the socket 50C from the state of FIG.

FIG. 22 is a side view showing a state before the socket 50D is mounted on the mounting block 24D according to the fourth embodiment.

FIG. 23 is an explanatory diagram illustrating a portion of the socket 50D of FIG. 22 along the line bb.

FIG. 24 is a perspective view showing a mounting block 24E according to a fifth embodiment.

FIG. 25 is a perspective view showing a socket 50E.

FIG. 26 is a side view of the socket 50E.

FIG. 27 is an explanatory diagram illustrating a state where the socket 50E is attached to the attachment block 24E.

28 is an explanatory diagram illustrating an operation of removing the socket 50E from the state of FIG.

FIG. 29 is a perspective view showing a socket 50F and a diameter expansion regulating member 60F according to a sixth embodiment.

FIG. 30 is a perspective view illustrating a state in which a diameter expansion regulating member 60F is attached to a socket 50F.

FIG. 31 is a perspective view showing a socket 50G and a diameter expansion regulating member 60G according to a seventh embodiment.

FIG. 32 is a perspective view showing a socket 50H and a diameter expansion regulating member 60H according to an eighth embodiment.

FIG. 33 is a perspective view showing a socket 50H.

FIG. 34 is a perspective view of the diameter expansion regulating member 60H as viewed from the inner peripheral side.

FIG. 35 is a perspective view for explaining that the diameter expansion regulating member 60H is at a temporary fixing position.

FIG. 36 is a perspective view showing a socket 50J and a diameter expansion regulating member 60J according to a ninth embodiment.

FIG. 37 is a perspective view showing a socket 50K and a diameter expansion regulating member 60K according to a tenth embodiment.

FIG. 38 is a perspective view for explaining that the diameter expansion regulating member 60K is at a temporary fixing position.

FIG. 39 is a perspective view illustrating a state in which a diameter expansion regulating member 60K is attached to the socket 50K.

FIG. 40 is a cross-sectional view showing a hose connection structure according to a conventional publication.

FIG. 41 is an explanatory diagram for explaining a hose removing operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Engine 10a ... Engine block 10b ... Cooling passage 10c ... Bolt hole 12 ... Radiator 14 ... Radiator hose 20 ... Hose 21 ... General part 22 ... Bellows part 22a ... Bellows groove 23 ... Seal member 24 ... Mounting block 24B ... Mounting block 24C ... Mounting block 24D ... Mounting block 24E ... Mounting block 25 ... Block main body 25a ... Mounting hole 25b ... Path 25c ... Block side engaging claw 25d ... Stopper 25Bc ... Block side engaging claw 25Bd ... Stopper 25Cc ... Block side engaging claw 25Cg ... Projection for diameter increase 25Be ... Stand 25Dc ... Engagement claw 25Dg ... Projection for diameter increase 25Bf ... Inclined surface 25Ec ... Engagement claw 25Ed ... Stopper 26a ... Through hole 26 ... Flange 27 ... Bolt 50 ... Socket 50B ... Socket 50C… Socket 50D ... Socket 50E ... Socket 50F ... Socket 50G ... Socket 50H ... Socket 50J ... Socket 50K ... Socket 51 ... Socket body 51B ... Socket body 51C ... Socket body 51D ... Socket body 51E ... Socket body 51F ... Socket body 51H ... Socket body 51J: Socket body 51K: Socket body 51b: Fixing engaging claw 51c: Pressing operation part 51Bb: Fixing engaging claw 51Cb: Fixing engaging claw 51Bc: Pressing operation part 51Db: Fixing engaging claw 51Eb: Fixing Engagement claw 51a Slit 51Ba Slit 51Ea Slit 51Fa Slit 51Ga Slit 51Ha Slit 51Ja Slit 51Ka Slit 52 Socket-side engagement part 52a Opening 53E Arch 54D Ga Guide portion 54C Guide groove 54Cb Incline groove 54Da Guide groove 54Db Enlarged diameter base 54Dc Concavity 55Ga, 55Gb First and second locking and fixing portions 55Ha, 55Hb First and second engagement members Stop fixing portions 55Fa, 55Fb: first and second locking fixing portions 56Ha, recesses 56Hb, recesses 56Ja, engaging holes 56Jb, engaging holes 56Ka, press-fitting grooves 56Kb, fitting insertion holes 57H, temporary fixing protrusions 57K, Recess 57Ka Locking claw 60F Diameter regulating member 60G Diameter regulating member 60H Diameter regulating member 60J Diameter regulating member 60K Diameter regulating member 61Ja, 61Jb Curved surface 61Ga, 61Gb Engagement ridge 61Ha, 61Hb: first and second engaging projections 61F: regulating member body 61H: regulating member body 61J: regulating member body 61Fa: engaging claw 61Fb Engagement groove 61Ha 1st engagement ridge 61Hb 2nd engagement ridge 61Gc ... pressing operation part 61Ka ... press-fit linear part 61Kb ... locking end 61Kc ... fitting insertion end 62Ja, 62Jb ... engagement pin 62Ha, 62Hb ... first and second temporary fixing projections 62H ... guide projection

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yoshiaki Kameda 1 Ochiai Ogata, Kasuga-cho, Nishi-Kasugai-gun, Aichi Prefecture Inside Toyoda Gosei Co., Ltd. No. 1 Toyoda Gosei Co., Ltd. (72) Naomi Nakajima 1 Nagahata, Ochiai, Kasuga-cho, Nishikasugai-gun, Aichi F-term (reference) 3H017 CA03

Claims (15)

[The claims] 1. A hose connection structure for connecting a hose having a bellows portion to another passage, comprising: a block body connected to the passage and having a mounting hole; and a block protruding from an outer peripheral end of an opening of the block body. A mounting block having a side engaging claw; a socket body that covers the outer periphery and the bellows portion of the mounting block and that is elastically expandable in diameter; and a block-side engaging claw formed on the socket body. And a socket-side engaging portion formed around the opening of the socket body and engaging with the bellows portion, and the socket-side engaging portion is inserted into the bellows portion inserted into the mounting hole. And a socket for mounting the hose in the mounting hole in a state where the hose is sealed to the passage. The socket is blown by expanding the socket body from the state of being mounted on the mounting block. It is formed so as fixing engagement pawls from the click-side engagement pawl is disengaged, the connection structure of the hose, characterized in. 2. The hose connection structure according to claim 1, wherein the socket body is cut by a slit and has a cross section C.
A hose connection structure which is formed in a character shape so as to be elastically expandable in diameter. 3. The hose connection structure according to claim 1, wherein the socket body is formed of a plurality of arcs, and is formed so as to be elastically expandable by connecting an arc therebetween. Hose connection structure. 4. The hose connection structure according to claim 1, wherein the mounting block is configured to rotate the socket main body when the socket main body is rotated relative to the mounting block. A hose connection structure having a stopper for stopping rotation. 5. The hose connection structure according to claim 1, wherein the socket has a pressing operation portion for applying a rotational force to an outer periphery of the socket body. Structure. 6. The hose connection structure according to claim 4, wherein the mounting block includes a riding stand for moving the socket body to the outer diameter side when the socket is rotated. 7. The hose connection structure according to claim 1, wherein the mounting block presses the socket main body so as to expand its diameter when the socket main body is rotated relative to the mounting block. A hose connection structure provided with a projection for increasing diameter. 8. The hose connection structure according to claim 7, wherein the socket body includes a guide portion for guiding a diameter-enlarging projection. 9. The hose connection structure according to claim 2, wherein the hose connection structure includes a diameter-restricting member that is mounted on the socket body over the slit and restricts the diameter of the socket body. 10. The hose connection structure according to claim 9, wherein the diameter-increasing restricting member is formed in an arc-shaped restricting member body following the outer shape of the socket main body, and on the inner peripheral surface of the restricting member main body. connection structure of a hose and an engaging portion which is engageable in the same direction as the insertion direction of the engaging and hoses between the outer surface of the. 11. The hose connecting structure according to claim 10, wherein the diameter-increasing restricting member is provided with a pressing operation portion protruding from an outer surface of the restricting member main body and for applying a force for detachment in the insertion direction. Connection structure. 12. The hose connecting structure according to claim 11, wherein said hose connecting structure is provided over said block main body and said diameter expansion regulating member, and said diameter expansion regulating member is temporarily fixed to said socket in a state where said hose is not attached to said socket. Hose connection structure with stop means. 13. The hose connection structure according to claim 12, wherein the temporary fixing means is configured to temporarily fix the diameter expansion regulating member halfway in the insertion direction. 14. The hose connection structure according to claim 9, wherein the diameter-increasing restricting member includes a restricting member main body having an arc surface formed so as to follow an outer surface of the socket main body, and a socket protruding from the arc surface. A hose connection structure comprising: an engagement pin engaged with a main body. 15. The hose connection structure according to claim 9, wherein the diameter-expanding restricting member is configured to span the slit and bend the wire to engage with the socket body. Hose connection structure.