JP6075022B2 - Automotive door mirrors - Google Patents

Description

  The present invention relates to an automobile door mirror.

  In Patent Document 1 and Patent Document 2, a mirror is mounted on the door side through a plurality of bosses that cover the back surface of the base body of the mirror base and arrange a gasket and project the base body on the back surface. A structure that is fastened and fixed to is disclosed.

JP 2011-51434 A JP 2012-192882 A

  In both disclosed techniques of Patent Document 1 and Patent Document 2, a metal mirror base is used, but a molded product of a hard resin material is frequently used for the mirror base because of the demand for weight reduction of the vehicle body. Yes.

  In the mirror base made of synthetic resin, the boss part on the back of the base body is molded integrally with the base body, but the boss part molding part and the general part have different cooling cycles during molding. Distortion generally referred to as sink marks tends to occur on the surface side of the molded part of the part.

  In particular, in the case of a vehicle having a specification in which the base main body is disposed relatively far away from the door side mirror mounting portion for the reason of modeling of the vehicle body, the protrusion height of the above-described boss portion is increased by the increase in the separation interval. Becomes large, and the above-mentioned degree of sinking is increased.

  Therefore, by forming a box-shaped seat part generally referred to as a collar on the back of the base body and integrally forming a boss part on the seat part, the cooling cycle at the time of molding is made almost uniform in each part. It is possible to avoid the occurrence of sink marks.

  However, in this case, the box-shaped seat portion is formed by providing a slide core on one mold surface that molds the back side of the base body, and is molded by the slide core. Therefore, it is difficult in design to provide a plurality of slide cores corresponding to a plurality of seats for the bosses by changing the sliding direction.

  For this reason, it is practically impossible to integrally form the boss portion on the back surface of the base body via the box-shaped seat, and as a result, the boss portion is projected directly on the back surface of the base body as described above. It is the actual situation.

  Therefore, the present invention is for an automobile equipped with a mirror base capable of forming a plurality of box-shaped seats on the back surface of the base body without difficulty in design and capable of integrally projecting a boss on each seat. A door mirror and a method for forming a mirror base are provided.

  The automotive door mirror of the present invention includes a base body attached to a mirror mounting portion on the door side, and a bottom surface that is integrally formed by projecting outward to a lower end portion of the base body and rotatably supports the mirror housing. A mirror base with a box-like stay open on the side;

  A gasket that is fitted and fixed to the base body so as to cover the back surface thereof and seals between the base body and the mirror mounting portion, and an underwear that is attached to the stay with its lower surface side open portion closed. The base body has a basic structure in which a plurality of boss portions project from the back surface of the base body and are fastened and fixed to the mirror mounting portion via the boss portions.

Then, at the lower end of the base body, the predetermined position of the partition wall that partitions the connecting portion between the lower side of the back the stay, bulging toward the rear side of the base body, the stay A box-shaped seat part opened in the same direction as the lower surface side opening part is provided along a parting line of a pair of molds forming the mold of the mirror base, and among the boss parts, at the lower end of the base body The main feature is that the set boss is integrally formed on the seat.

  The mirror base molding method according to the present invention includes a base body attached to a mirror attachment portion on the door side, and extends outwardly from a lower end portion of the base body so as to rotatably support the mirror housing. The method is based on a method in which a mirror base having a stay is integrally formed with a forming die composed of a pair of molds.

  Then, a box-shaped seat is formed on the upper portion of the back surface of the base body by a slide core attached to one mold of the molding die, and an upper boss is integrally molded on the seat. On the other hand, a box shape is formed along the parting line of the pair of molds by a slide core that is attached to the other mold of the molding die at the lower part of the back surface of the base body and molds the lower surface side of the stay. The main feature is that a lower boss portion is integrally formed on the seat portion.

  According to the automotive door mirror and mirror base molding method of the present invention, the boss portion provided on the back surface of the base body of the mirror base projects integrally through the box-shaped seat portion, so that the cooling cycle during molding is performed. It is possible to avoid the occurrence of sink marks on the surface by making the portions of the base body substantially uniform.

  The boss seat set on the back of the lower end of the base body is provided in a mold different from the mold for molding the back side of the base body, and a slide core that molds the lower surface of the stay. These can be molded into a box shape along the parting line of the pair of molds.

  Therefore, even in a small area range on the back surface of the base body, a plurality of box-shaped seats can be integrally formed without difficulty in design, and by providing a boss on the seat, a sink is formed on the surface. It is possible to obtain a mirror base having a good quality with no occurrence of the above-described problem.

The external view of the door provided with the door mirror for motor vehicles made into the object of this invention. Explanatory drawing which looked at the mirror base which employ | adopted this invention from the back side of the base main body with the under cover removed. Explanatory drawing which looked at the mirror base of FIG. 2 from the bottom face side. The bottom view of an undercover. Cross-sectional explanatory drawing which follows the AA line of FIG. Sectional explanatory drawing which shows the shaping | molding die corresponding to FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an arrangement state of a door mirror for an automobile, and a door mirror 10 is arranged at a corner portion of a substantially triangle formed by a door waist line D · W of the front door 1 and a front portion of the door sash 2 inclined backward. It is.

  As will be described later, the door mirror 10 includes a mirror base 11 that is fixed to the door side, and a mirror housing 12 that includes a mirror body (not shown) and is assembled to the mirror base 11.

  2 to 5, the mirror base 11 is fixed to the door side as shown in FIGS. 2 to 5, and the stay 14 is formed integrally with the lower end portion of the base body 13 so as to support the mirror housing 12. And is formed in a substantially L-shaped cross section.

  The mirror base 11 is molded with an appropriate synthetic resin material, and the base body 13 is formed in a substantially triangular shape in accordance with the substantially triangular corner shape of the front door 1 described above.

  The mirror base 11 is fastened and fixed via a gasket 22 to a mirror mounting portion formed by a corner piece (not shown) provided on the door side.

  For this reason, a plurality of boss portions 15 are projected on the back surface of the base body 13 and a seal backup is provided substantially along an annular seal line (seal lip) with respect to the mirror mounting portion set on the gasket 22. An annular rib wall 16 is provided in a protruding manner.

  For the gasket 22, for example, a soft synthetic resin material such as polyethylene is used so that a sealing effect can be obtained relatively intimately in close contact with the mirror mounting portion.

  This gasket 22 includes the projecting portion region of the boss 15 on the back side of the base body 13 and the projecting portion region of the rib wall 16, so that the outer shape of the base body 13 is entirely wrapped. Molded into a substantially triangular C-shaped cross section.

  As shown in FIGS. 2 and 5, the seal line of the gasket 22 described above and the rib wall 16 for seal backup of the base body 13 corresponding to the seal line are within a substantially triangular shape corresponding to the outline line of the base body 13. The outer double ring is formed as 16a and 16b. The above-described boss portions 15 are projected at three locations, that is, the upper corner portion on the inner rib wall 16b and the lower front and rear corner portions.

  The stay 14 of the mirror base 11 forms a circular recess 17 for disposing a shaft (not shown) that supports the mirror housing 12, and a storage position where the mirror housing 12 is folded along the side of the door. And a deployment use position projecting to the side of the door so as to be rotatable.

  This stay 14 has a built-in drive mechanism such as a motor and is configured in a box shape so as to obtain the load-bearing performance of the relatively heavy mirror housing 12 to ensure the required rigidity.

  The stay 14 is opened on the lower surface side from the lower surface side so that the fixing operation of the shaft and the wiring operation of the harness wire routed to the motor or the like can be performed. The under cover 18 shown is closed.

  The under cover 18 is fitted and mounted on the periphery of the lower surface side open part, and is detachably hooked and fixed by a hook hooking means 19 as shown in FIG.

  Here, the upper and lower boss portions 15a and 15b arranged on the back surface of the base body 13 are placed on the seat portion 21 via a box-shaped seat portion 21 generally called a bag. Projected.

  The upper seat portion 21a projecting from the boss portion 15a is formed in a box shape that opens toward the annular center at the upper corner portion of the inner rib wall 16b.

  On the other hand, the front and rear two seats 21b and 21b on the lower side projecting from the bosses 15b and 15b are the lower ends of the base body 13 and define the connecting part between the back surface and the lower surface side of the stay 14. A required position of the partition wall portion 20 is bulged and formed toward the back side of the base body 13, and has a box shape opened in the same direction as the lower surface side opening portion of the stay 14.

  FIG. 6 shows a mold 30 for injection molding the above-described mirror base 11.

  The mold 30 includes a core mold 31 that molds the back side of the base body 13, a cavity mold 32 that molds the surface of the base body 13 and the stay 14, and a lower surface side of the stay 14 that is attached to the cavity mold 32. And a slide core 33 for molding.

  The core mold 31 is provided with a slide core 34 for forming the upper box-shaped seat portion 21a at a position corresponding to the upper corner portion of the inner rib wall 16b. The slide core 34 is slidable in a direction corresponding to the annular center of the rib wall 16b.

  On the other hand, on the slide core 33 attached to the cavity mold 32, the partition wall 20 is partially expanded toward the back side of the base body 13 on the parting line P · L between the core mold 31 and the cavity mold 32. The molding surface 33a for molding the lower box-shaped seat portion 21b is formed, and is slidable parallel to the parting line P · L.

As a result, an upper box-shaped seat portion 21a is formed on the upper portion of the back surface of the base body 13 by the slide core 34 attached to the core mold 31, and the upper boss portion 15a is integrally formed on the seat portion. On the other hand, a box-shaped seat 21b on the lower side is formed along the parting line P / L by a slide core 33 attached to the cavity mold 32 at the lower part of the back surface of the base body 13 and The boss portion 15b on the lower side is integrally molded.

  In this way, the slide core 33 attached to the cavity mold 32 is provided with the molding surface 33a for molding the lower seat portion 21b, and the slide core 33 is slid in parallel with the parting lines P and L to stay 14. When the lower surface side of the base body 13 is molded, a notch 13 b is formed in the flange edge 13 a at the lower end of the base body 13 with the occupied width of the slide core 33.

  Therefore, a flange edge 18a that fits into the notch 13b and is flush with the flange edge 13a is extended to the end edge of the above-described under cover 18 that closes the opening on the lower surface side of the stay 14. , So that the appearance is trimmed.

  According to the present embodiment having the above-described configuration, the boss portion 15 provided on the back surface of the base body 13 of the mirror base 11 protrudes integrally through the box-shaped seat portion 21, so that the cooling cycle during molding is performed. Can be made substantially uniform in each part of the base body 13 to avoid the occurrence of sink marks on the surface.

  In particular, a lower seat portion 21b that protrudes from a lower boss portion 15b set at the lower end portion of the base body 13 with which the stay 14 is continuously provided is provided in the cavity mold 32 to form the lower surface side of the stay 14. The slide core 33 can be formed into a box shape along the parting line P · L between the cavity mold 32 and the core mold 31.

  On the other hand, the upper seat portion 21a protruding from the upper boss portion 15a of the base body 13 is molded into a box shape that opens toward the center of the base body 13 by the slide core 34 provided on the core mold 31. Is possible.

  Accordingly, even in a small area range of the back surface of the base body 13, a plurality of box-shaped seats 21 can be integrally formed without difficulty in design, and the boss 15 on the seat 21 is projected. Thus, it is possible to obtain a mirror base 11 having a good quality with no occurrence of sink marks on the surface.

  And since the boss | hub part 15 is integrally formed in the back surface of the base main body 13 via the box-shaped seat part 21 in this way, from the reason on modeling of the front door 1, between the base main body 13 and a mirror attachment part. Even if the separation dimension is large and the protruding amount of the boss 15 from the back surface of the base body 13 is increased, the substantial molding length of the boss 15 can be reduced.

  As a result, when the mirror base 11 is molded, the above-described core mold 31 can be easily punched and does not induce molding failure of the boss portion 15. You can also.

  Further, as described above, the lower seat portion 21b is formed along the parting line PL by the slide core 33 attached to the cavity mold 32, so that the slide core is formed on the flange edge 13a at the lower end of the base body 13. The notch 13b is formed with an occupation width of 33, and this is closed in alignment with the flange edge 18a of the under cover 18 in a flush manner.

  Accordingly, it is possible to avoid the occurrence of sink marks on the surface of the base body 13 as described above, and to provide a door mirror having a mirror base with a high appearance quality because of good parting alignment with the under cover 18 on the lower surface side. can do.

1 ... Front door (door)
DESCRIPTION OF SYMBOLS 2 ... Door sash 10 ... Door mirror 11 ... Mirror base 12 ... Mirror housing 13 ... Base main body 13a ... Bottom flange edge 13b ... Notch part 14 ... Stay 15 ... Boss part 15a ... Upper boss part 15b ... Lower boss part 18 ... Undercover 18a ... Flange edge 20 ... Bulkhead 21 ... Box-shaped seat 21a ... Upper seat 21b ... Lower seat 22 ... Gasket 30 ... Mold 31 ... Core mold (one mold)
32 ... Cavity mold (the other mold)
33 ... Cavity type slide core 34 ... Core type slide core P · L ... Parting line

Claims (3)

A base body attached to the mirror mounting portion on the door side, a box-shaped stay that is integrally formed by projecting outward to the lower end portion of the base body and that supports the mirror housing so that the mirror housing can be rotated in the horizontal direction. A mirror base with
A gasket that is fitted and fixed to the base body so as to cover the back surface thereof, and seals between the base body and the mirror mounting portion;
An under cover attached to the stay by closing the opening on the lower surface side,
The base body has a structure in which a plurality of boss portions project from the back surface thereof and are fastened and fixed to the mirror mounting portion via the boss portions,
Wherein at the lower end portion of the base body, the predetermined position of the partition wall that partitions the connecting portion between the lower side of the back the stay, bulging toward the rear side of the base body, the lower surface of the stay A box-shaped seat part opened in the same direction as the opening part is provided along a parting line of a pair of molds forming the mold of the mirror base,
Among the boss, automobile door mirror boss portion is set in the lower end of the base body, characterized in that it is integrally molded into the seat on.   A notch portion is formed in a region corresponding to an end edge portion of the under cover at a flange edge at a lower end of the base body, and the flange portion is fitted to the notch portion at an end edge portion of the under cover. The automobile door mirror according to claim 1, wherein a flange edge that is flush with the edge is extended. A mirror base comprising a base body attached to a mirror mounting portion on the door side, and a stay extending outwardly extending at a lower end portion of the base body and rotatably supporting the mirror housing in a horizontal direction. A method of integrally molding with a mold made of a mold,
On the upper part of the back surface of the base body, a box-shaped seat portion is formed by a slide core attached to one mold of the molding die, and an upper boss portion is integrally molded on the seat portion,
A box-shaped seat along the parting line of the pair of molds by means of a slide core attached to the other mold of the mold and formed on the lower surface of the base body and molding the lower surface side of the stay. Forming a lower part, and forming a lower boss part integrally on the seat part.

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