JP2005335427A - Mounting structure of ventilator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a ventilator for efficiently performing a thermal caulking work of a welding pin for fixing a locking claw to a case in a short time. <P>SOLUTION: This mounting structure is for the ventilator for blowing air into a cabin. A locking means 8 is constituted of a mounting seat 9 provided on an outer peripheral surface of the case 1a, the welding pin 9c projectingly provided in the mounting seat 9, the locking claw 10 fixed to the mounting seat 9 by thermally caulking the welding pin 9c, and a temporary fastening means for temporarily fastening the locking claw 10 to the mounting seat 9. As a result, the locking claw 10 is temporarily fastened to the mounting seat 9 by the temporary fastening means when fixing the locking claw 10 to the mounting seat 9 by thermally caulking the welding pin 9c and the locking claw 10 does not fall during an assembling work, to efficiently perform the thermal caulking work of the welding pin 9c in a short time. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mounting structure for a ventilator that adjusts the direction of air blown into a passenger compartment of an automobile.

  Conventionally, an automobile equipped with an air conditioner (air conditioner) is provided with an air blowing section for blowing out air conditioned by the air conditioner into the vehicle interior. The ventilator to adjust is installed (for example, patent document 1).

  In the “vehicle ventilator” described in Patent Document 1, a rotating member whose rear part is supported by the case by a supporting means is rotatably provided in a substantially cylindrical case.

  A plurality of louvers are rotatably provided in the vehicle interior side opening of the rotating member. When adjusting the amount of air blown into the vehicle interior from the air outlet, the louver is rotated. When adjusting the opening of the air outlet and adjusting the air direction, the air volume and direction of the air blown into the passenger compartment can be adjusted freely by rotating the rotating member and changing the direction of the louver. It is configured.

  A plurality of fasteners for attaching the ventilator to an attachment hole opened in an instrument panel or the like are provided on the outer peripheral surface of the cylindrical case.

  The fastener is formed by a leaf spring having one end bent in a substantially U shape, and a pin hole is formed in the other end of the fastener.

  A concave portion that is slightly larger than the fastening device is formed on the outer peripheral portion of the case to which the fastening device is attached, and a welding pin formed integrally with the case formed of a thermoplastic resin protrudes from the concave portion. In the state where the welding pin is inserted into the pin hole of the fastening tool, the fastening tool is fixed to the case by crimping the tip of the welding pin with heat.

When the ventilator having the fasteners fixed to a plurality of locations on the outer periphery of the case as described above is press-fitted into the mounting hole opened in the instrument panel or the like from the front, the ventilator moves inward when passing through the mounting hole. Because it deforms elastically and the fastening device passes through the mounting hole, it returns to its original shape, so the tip of the fastening device is locked inside the mounting hole, and the ventilator can be easily fixed to the instrument panel, etc. It is like that.
JP 2000-203254 A

  However, the mounting structure for a vehicle ventilator described in Patent Document 1 has the following problems.

  That is, in Patent Document 1, a welding pin protrudes from a concave portion formed on the outer peripheral surface of a cylindrical case, and after inserting a pin hole of a fastener into this welding pin, the tip of the welding pin is caulked with heat. Fasteners are fixed to the case, but the case itself is cylindrical, so if you attach several fasteners to the outer peripheral surface of the case in advance and then try to caulk the welding pins with heat, May be displaced or dropped.

  For this reason, it is necessary to perform the caulking work while fixing the fasteners one by one by hand, and the work efficiency is poor, and when the heat is applied to the fasteners, Since it cannot be held by hand, the position of the fastening device may be shifted immediately before it is secured by heat caulking, and the fastening device cannot be secured accurately.

  If the attachment accuracy of the fastening device is poor with respect to the case, when the ventilator is attached to an instrument panel or the like, rattling occurs between the case and the instrument panel or the like, causing abnormal noise.

  In addition, when the ventilator with a cylindrical case is attached to an attachment hole such as an instrument panel, the case may rotate within the attachment hole to correct the attachment position. Since the tip is pressed and locked to the mounting hole from the inside, a large force is applied to the welding pin fixing the fastening device and the fastening device itself, and the welding pin is damaged or the fastening device is deformed. There is.

  In order to prevent this, it is necessary to increase the diameter of the welding pin in advance or increase the spring strength of the fastening device. However, if the diameter of the welding pin is increased, the pin hole formed in the fastening device becomes larger. For this reason, the rigidity of the fastener is reduced.

  In addition, if the spring strength of the fastening device is increased, a large force may act on the opening edge of the mounting hole when the ventilator is attached to the mounting hole of the instrument panel or the like, resulting in damage to the opening edge. Requires an instrument panel, etc., that is strong enough to withstand high temperatures.

  The present invention was made in order to improve such conventional problems, and it is an object of the present invention to provide a ventilator mounting structure capable of efficiently performing a heat caulking operation of a welding pin for fixing a locking claw to a case in a short time. To do.

  The ventilator mounting structure of the present invention comprises a ventilator body having a case with an air outlet opening for blowing air into the vehicle compartment, and a plurality of locking means provided on the outer peripheral surface of the case, and the ventilator is provided by the locking means. A ventilator mounting structure that fixes the main body to an instrument panel, etc., using a mounting seat provided on the outer peripheral surface of the case, an insertion pin protruding from the mounting seat, and an insertion pin The locking claw is fixed to the mounting seat and the temporary fixing means for temporarily fixing the locking claw to the mounting seat.

  With the above configuration, when the locking claw is fixed to the mounting seat using the insertion pin, the locking claw is temporarily fixed to the mounting seat in advance by the temporary fixing means. The locking claw does not fall off from the mounting seat, which allows the insertion pin to be attached to the mounting seat in a short time, such as heat caulking work, so that the efficiency of the assembly work is greatly improved and the insertion pin is At the time of mounting, the locking claw is positioned with respect to the mounting seat at two places, the insertion pin and the temporary fixing means, so that the locking claw can be fixed to the mounting seat with high accuracy. On the other hand, the ventilator main body can be securely fixed, and the ventilator main body does not rattle during traveling of the automobile, so that no abnormal noise is generated.

  In addition, when the ventilator body is turned to correct the mounting position after the ventilator body is mounted, the locking claws are inserted even if excessive force is applied to the locking claws that are crimped and locked inside the mounting holes. Since it is fixed to the mounting seat at at least two places, the pin and the temporary fixing means, it is possible to reliably prevent the insertion pin from being damaged or the latching claw from being deformed due to excessive force. Since it is not necessary to increase the strength of the welding pins and the spring strength of the locking claws, or increase the strength of the instrument panel or the like, the cost of components can be reduced.

  In the ventilator mounting structure of the present invention, the temporary fixing means includes a projecting piece provided on the locking claw and an engaging portion provided on the mounting seat, and the insertion pin is fitted into the pin hole provided on the locking piece. In this state, the projecting piece is engaged with the engaging portion.

  With this configuration, the temporary fixing means can be easily formed, so that the cost of parts can be reduced.

  With the above configuration, the locking claw can be fixed by the crimping portion, the engaging portion, and the protruding piece of the insertion pin, so that the locking claw can be more reliably fixed.

  According to the ventilator mounting structure of the present invention, when the locking claw is fixed to the mounting seat using the insertion pin, the locking claw is temporarily fixed to the mounting seat by the temporary fixing means, and is locked during the assembly operation. Since the nail does not fall off, the attaching operation such as the heat-caulking operation of the insertion pin can be efficiently performed in a short time.

  Embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of the ventilator, FIG. 2 is a transverse sectional view thereof, FIG. 3 is an exploded perspective view of the locking means, and FIGS.

  A ventilator main body 1 used by being attached to a mounting hole 2a opened in, for example, an instrument panel 2 of an automobile has a cylindrical case 1a as shown in FIGS.

  The opening on the front end side of the case 1a is an air outlet 1b. A front louver 3 is provided in the air outlet 1b, and a rear louver 4 is provided behind the front louver 3.

  As shown in FIG. 1, the front louver 3 is composed of a plurality of lateral louvers 3a provided at equal intervals in the vertical direction, and pins 3b protruding from both ends of each lateral louver 3a are connected to the case 1a. A pin hole 1c formed around the air outlet 1b is rotatably fitted.

  Each lateral louver 3a is interlocked with each other by an interlocking link (not shown). By operating an operation knob 5 provided in the lateral louver 3a located in the center in the vertical direction, each lateral louver 3a is centered on the pin 3b. At the same time, it can be rotated in the vertical direction, so that the vertical direction of the air blown out from the air outlet 1b into the vehicle compartment can be adjusted.

  The operation knob 5 provided in the front louver 3 is attached to the lateral louver 3a so as to be slidable in the left-right direction, and the angle of the rear louver 4 can be adjusted by operating the operation knob 5 in the left-right direction. It has become.

  The rear louver 4 is formed by a plurality of vertical louvers 4a provided at equal intervals in the left-right direction within a small diameter portion 1d formed on the air outlet 1b side of the case 1a, and is provided at both ends of each vertical louver 4a. A projecting pin (not shown) is rotatably fitted in a pin hole (not shown) formed in the small diameter portion 1c of the case 1a.

  Each of the vertical louvers 4a is interlocked with each other by an interlocking link (not shown), and an operation portion 4b formed at the front edge of the central longitudinal louver 4a projects from the rear end of the operation knob 5. By operating the operation knob 5 in the left-right direction along the horizontal louver 3a, it is possible to adjust the air direction in the left-right direction of the air blown into the vehicle compartment from the air outlet 1b. It has become.

  In addition, a disc-shaped air volume adjusting valve 6 is provided inside the rear end side of the case 1a.

  The air volume adjusting valve 6 has a support shaft 6a projecting substantially in the middle thereof, and is rotatably supported by the case 1a. By rotating the support shaft 6a around the support shaft 6a by an operating means (not shown), the air blowing port 1b. The air volume of the air blown into the passenger compartment can be adjusted or blocked, and the air volume adjusting valve 6 has an outer peripheral portion on the inner peripheral surface of the case 1a when the air volume adjusting valve 6 is in the closed position. A seal member 7 that abuts is provided.

  On the other hand, on the outer peripheral surface of the case 1a of the ventilator main body 1, a plurality of locking means 8 are provided at equal intervals in the circumferential direction at positions close to the small diameter portion 1d.

  These locking means 8 are for fixing the ventilator main body 1 to the instrument panel 2 when the ventilator main body 1 is mounted in the mounting hole 2a of the instrument panel 2, and projectingly provided on the outer peripheral surface of the case 1a. The locking claw 10 is attached to the mounting seat 9.

  The mounting seat 9 is integrally formed when the case main body 1 is molded from a thermoplastic resin. As shown in FIG. 3, the mounting base 9 is formed in a substantially U-shaped side wall portion 9a, and the side wall portion 9a has a substantially The support rib 9b has a letter shape, and a welding pin 9c as an insertion pin protruding from the intersection of the support rib 9b. The height of the support rib 9b is slightly lower than the height of the side wall 9a. Is slightly higher than the side wall 9a.

  The locking claw 10 is formed by a rectangular leaf spring, and is slightly smaller in width than the inner surface dimension of the side wall 9a so that it can be fitted into the side wall 9a without rattling.

  A locking portion 10a bent in a substantially U shape is formed on one end side of the locking claw 10, and a locking edge 10b is formed at the tip of the locking claw 10a.

  On the other end side of the locking claw 10, an engaging portion 10c bent in an approximately L shape is formed on the opposite side to the protruding direction of the locking portion 10a, and between the engaging portion 10c and the locking portion 10a. Is a flat mounting portion 10d, and a pin hole 10e having a diameter slightly larger than the outer diameter of the welding pin 9c is formed in a substantially intermediate portion of the mounting portion 10d.

  The engaging portion 10c of the locking claw 10 is formed slightly shorter than the height of the support rib 9b, and can be inserted from above into a notch groove 9d formed between the inner surface of the side wall portion 9a and the tip of the support rib 9b. In addition, a protruding piece 10f that engages from the inside into a fitting hole 9e formed in the side wall portion 9a is cut and raised obliquely upward on the distal end side of the engaging portion 10c. A temporary fixing means for temporarily fixing the locking claw 10 to the mounting seat 9 is constituted by the engaging portion 10c of the locking claw 10 and the engaging hole 9e formed in the protruding piece 10f and the side wall portion 9a.

  In FIG. 1 and FIG. 2, 12 is a finisher attached around the air outlet 1b. When the ventilator main body 1 is attached to the attachment hole 2a of the instrument panel 2, the space between the attachment hole 2a and the air outlet 1b is shown. It covers the gap that occurs in

  Reference numeral 13 denotes a duct connecting the ventilator body 1 and an air conditioner (not shown).

  Next, the operation of the ventilator mounting structure constructed as described above will be described.

  In assembling the ventilator main body 1, the rear louver 4 and the front louver 3 are sequentially incorporated into the case 1a from the air outlet 1b side, and the air volume adjusting valve 6 is incorporated from the rear side opening of the case 1a.

  When assembling the locking means 8 provided at a plurality of locations on the outer peripheral surface of the case 1a, the engaging portion 10c of the locking claw 10 formed in advance by a leaf spring is provided between the support rib 9b of the mounting seat 9 and the side wall portion 9a. At the same time as inserting into the notch groove 9d formed in the pin 10, a pin hole 10e drilled in the attachment portion 10d of the locking claw 10 is fitted to the tip of the welding pin 9c.

  In this state, when the mounting portion 10d of the locking claw 10 is pressed toward the support rib 9b, the projecting piece 10f formed by being cut and raised obliquely upward from the engaging portion 10c is compressed by the inner surface of the side wall portion 9a. The engaging portion 10c can be easily press-fitted into 9d.

  When the attachment portion 10c of the engagement claw 10 is in the engagement claw attachment position where the attachment portion 10c contacts the upper surface of the support rib 9c, the protruding piece 10f cut and raised from the engagement portion 10c is formed in the engagement hole 9e formed in the side wall portion 9a. As shown in FIG. 5, the original position is elastically restored, so that the tip of the projecting piece 10f is engaged with the engaging hole 9e.

  Thus, the locking claw 10 is temporarily fixed to the mounting seat 9 by temporary fixing means including the engaging portion 10c of the locking claw 10 and the engagement hole 9e formed in the protruding piece 10f and the side wall portion 9a. Therefore, the locking claws 10 are temporarily fixed in advance by the above method to all of the plurality of mounting seats 9 protruding from the outer peripheral surface of the case 1a.

  When the locking claws 10 are temporarily fixed to all the mounting seats 9, the tip of the welding pin 9c is caulked with heat as shown by the phantom line in FIG. Since the locking claw 10 is temporarily fixed to the mounting seat 9 in advance, the locking claw 10 is not dropped from the mounting seat 9 without supporting the locking claw 10 with a finger or the like. As a result, the heat caulking operation of the welding pin 9c can be performed efficiently in a short time.

  Further, when the welding pin 9c is caulked with heat, the locking claw 10 is positioned with respect to the mounting seat 9 at two locations of the welding pin 9c and the protruding piece 10f of the engaging portion 10c. The locking claw 10 can be firmly fixed.

  The operation when the ventilator main body 1 that has been assembled as described above is attached to the attachment hole 2a of the instrument panel 2 will be described next. First, the rear end of the case 1a of the ventilator main body 1 from the front of the instrument panel 2 is described. Insert into the mounting hole 2a.

  When the plurality of locking means 8 provided on the outer peripheral surface of the case 1a pass through the mounting hole 2a, the locking portion 10a of the locking claw 10 is pressed by the inner peripheral surface of the mounting hole 2a. As shown by the phantom line, the ventilator body 1 can be easily inserted because it is elastically deformed inward, and when the locking portion 10a of the locking claw 10 passes through the mounting hole 2a, the locking portion 10a is elastically moved to its original position. Since the tip edge 10b of the locking portion 10a is crimped and locked to the periphery of the mounting hole 2a from the inside, the ventilator body 1 can be easily fixed to the instrument panel 2.

  Further, when assembling the ventilator, the locking claw 10 is fixed to the mounting seat 9 with high accuracy, so that the ventilator main body 1 can be securely fixed to the instrument panel 2. Since the ventilator main body 1 does not rattle during traveling, it does not cause abnormal noise.

  On the other hand, after the ventilator 1 is attached to the instrument panel 2, the ventilator body 1 may be rotated to correct the attachment position.

  At this time, excessive force acts on the locking claw 10 in which the tip edge 10b of the locking portion 10a is pressure-locked to the inside of the mounting hole 2a.

  However, the locking claw 10 is fixed to the mounting seat 9 at at least two locations of the welding pin 9c and the protruding piece 10f of the engaging portion 10d, and the inner surface of the side wall 9a of the mounting seat 9 is locked around the welding pin 9c. Since the claw 10 is restricted from rotating, it is possible to reliably prevent the welding pin 9c from being damaged or the locking claw 10 from being deformed by an excessive force.

  This eliminates the need to increase the strength of the welding pins 9c and the spring strength of the locking claws 10 or increase the strength of the instrument panel 2 in advance, thereby reducing component costs.

  In the above embodiment, the engaging portion 10c is formed by bending the end portion of the locking claw 10 into a substantially L shape. However, as in the modification shown in FIG. The portions 10c may be formed, and the protruding pieces 10f may be cut and raised at the engaging portions 10c.

  In this case, the engagement holes 9e may be formed on both sides of the side wall 9a of the mounting seat 9.

  Further, the modification shown in FIG. 7 is formed by bending the end portion of the locking claw 10 upward substantially in an L shape to form an engaging portion 10c, and cutting and raising the protruding piece 10f in the engaging portion 10c. In this case, the height of the side wall portion 9a facing the engaging portion 10c may be increased to provide the engaging hole 9e. According to this modification, the notch groove 9d for inserting the engaging portion 10c may be omitted. it can.

  Furthermore, in the said embodiment, although the welding pin 9c was used as an insertion pin which attaches the latching claw 10 to the attachment seat 9, it is not limited to this, For example, as shown to FIG. 8 and FIG. After the pin hole 10e of the pin 11 locking claw 10 is inserted, it may be attached using the locking plate 12 having the plate portion 12a and the return portion 12b formed to be turned up substantially at the center thereof. In this case, the insertion pin 11 is elastically engaged with the insertion pin 11 in a state where the return portion 12b is expanded in a state where the insertion pin 11 is inserted into the central hole 12c of the locking plate 12, so The locking claw 10 is worn around.

  Furthermore, although the case of the ventilator installed in the instrument panel 2 was demonstrated in the said embodiment, it is needless to say that it is applicable also to the ventilator installed in the other location of the vehicle interior.

  According to the ventilator mounting structure of the present invention, when the locking claw is fixed to the mounting seat using the insertion pin, the locking claw is temporarily fixed to the mounting seat in advance by the temporary fixing means. Since it does not fall off, it can be efficiently installed in a short period of time, such as heat-clamping the insertion pin, making it ideal for ventilator installation structures that adjust the direction of the air blown into the passenger compartment of an automobile. is there.

It is a perspective view of the ventilator which employ | adopted the attachment structure of the ventilator which becomes embodiment of this invention. It is a cross-sectional view of the ventilator which employ | adopted the attachment structure of the ventilator which becomes embodiment of this invention. It is a disassembled perspective view of the latching means employ | adopted as the attachment structure of the ventilator which becomes embodiment of this invention. It is action explanatory drawing at the time of the assembly of the ventilator which employ | adopted the attachment structure of the ventilator which becomes embodiment of this invention. It is action explanatory drawing at the time of the assembly of the ventilator which employ | adopted the attachment structure of the ventilator which becomes embodiment of this invention. It is explanatory drawing which shows the modification of the temporary fix | stop means employ | adopted as the attachment structure of the ventilator which becomes embodiment of this invention. It is explanatory drawing which shows the modification of the temporary fix | stop means employ | adopted as the attachment structure of the ventilator which becomes embodiment of this invention. It is a disassembled perspective view of the latching means which shows the modification of the attachment structure of the latching claw employ | adopted as the attachment structure of the ventilator which becomes further another embodiment of this invention. It is a longitudinal cross-sectional view of the state where the locking claw in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ventilator body 1a Case 1b Air outlet 2 Instrument panel 8 Locking means 9 Mounting seat 9c Welding pin (insertion pin)
9e Engagement hole 10 Locking pin 10c Engaging portion 10f Projection piece 11 Insertion pin

Claims (2)

A ventilator main body having a case with an air outlet for blowing air into the passenger compartment; and a plurality of locking means provided on an outer peripheral surface of the case, and the ventilator main body is mounted on the instrument panel by the locking means. It is an attachment structure of a ventilator that is fixed to, for example, an attachment seat provided on the outer peripheral surface of the case, an insertion pin protruding from the attachment seat, and the insertion pin. A ventilator mounting structure comprising: a locking claw fixed to the mounting seat; and a temporary fixing means for temporarily fixing the locking claw to the mounting seat. The temporary fixing means includes a protruding piece provided on the locking claw and an engaging portion provided on the mounting seat, and the insertion pin is fitted in a pin hole provided in the locking piece. The ventilator mounting structure according to claim 1, wherein the protruding piece is engaged with the engaging portion.

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