JP4401176B2 - Electronic equipment with a motor - Google Patents

Description

  The present invention relates to an electronic device in which a motor is installed in a hole or notch formed in a housing, and in particular, eliminates a gap between the inner edge of the hole or notch and the outer surface of the motor, or provides a gap. The present invention relates to electronic equipment that minimizes

  In in-vehicle electronic devices, for example, a disk device for driving a disk such as a CD, DVD or MD in a 1DIN or 2DIN size housing, a changer mechanism for exchanging and driving the disk, and Various mechanisms such as a drive mechanism for moving a movable panel on which a display device or an operation device is mounted are mounted. In addition, a circuit board or the like may be stored in the housing together with the mechanism, or a plurality of types of the mechanisms may be mounted together.

  However, since the mounting location of the mechanism is determined according to its function, it is difficult to efficiently arrange the mechanism in a limited space in the housing. Therefore, a hole is formed in the housing, and a part of the motor that is a driving source is intervened in the hole so that the outer surface of the motor is the same surface as the outer surface of the housing. Even a little space can be provided in the arrangement space.

As described above, a technique for interposing and installing a part of a motor in a hole formed in a housing is described in FIGS. 1 and 4 of Patent Document 1 below, for example.
JP 2000-105544 A

  However, since the outer surface of the motor is curved, when a part of this motor is inserted into the rectangular hole formed in the housing, it is between the outer surface of the motor and the inner edge of the hole. It cannot be avoided that a gap is formed. Also, in the case of a sheet metal housing, tolerances accumulate in the punching dimensions and punching positions of the holes, so the holes must be formed in advance and the gap between the outer surface of the motor and the inner edge of the hole is considerable. It becomes big and vacant.

  For this reason, it is easy for external dust and dirt to enter the inside of the housing through the gap. For example, dust and dirt adhere to the gear mechanism and other movable parts inside the housing, which hinders the operation of each mechanism. Or dust or dirt may adhere to electronic parts or circuit connection parts, resulting in poor connection.

  In addition, when a part of the motor is intervened in the hole formed in the housing, the motor floats in the hole, so that it is difficult to position and fix the motor firmly. For this reason, rotational vibration is likely to be generated in the motor, and inconveniences such as increase in vibration noise are likely to occur.

  The present invention solves the above-described conventional problems, and in the case where a part of the motor is interposed in a hole or notch formed in the housing, the inner edge of the hole or notch and the outer surface of the motor It is an object of the present invention to provide an electronic device in which a gap is not easily formed, and a motor installed in a hole or notch can be positioned and firmly fixed.

The present invention, in the interior of the formed sheet metal housing, an electronic apparatus in which the motor outer surface is cylindrically curved surface is provided,
Wherein the housing, the hole or notch through said sheet metal is formed, the bracket for supporting the motor is attached to the housing,
The bracket is made of synthetic resin, and has a through hole that communicates with the inside and outside of the housing inside the hole or notch, and a holding portion that rises from both sides of the through hole,
The motor has an outer surface closely attached to the inner surface of the holding portion and is supported by the bracket, and a bottom portion of the motor enters the hole or notch formed in the housing,
The holding portion of the bracket covers the gap between the outer surface of the motor and the inner edge of the hole or notch .

  In the electronic device of the present invention, by arranging the bracket between the inner edge of the hole or notch and the motor, the gap between the inner edge and the outer surface of the motor can be completely closed, or many of the gaps The part can be closed as much as possible. Therefore, it is easy to prevent dust and dust from entering the housing. In addition, since the motor can be positioned and held by the bracket that closes the gap, the motor intervening in the hole or notch can be firmly fixed, and the motor vibrates and the vibration noise increases. Can prevent problems.

  In this specification, the hole in the casing means that the periphery is completely surrounded by the inner edge, and the notch portion of the casing means that the internal space is opened to the edge of the casing. That is, that is, formed in a concave shape from the edge of the housing.

  By forming the through hole in the bracket, a part of the motor can be positioned inside the through hole, and the internal space of the housing can be effectively used. In addition, the motor can be securely held by this bracket, and further, a gap can be prevented from being formed between the motor and the bracket.

Further, the present invention, the said said metal plate from the hole or notch of the inner support piece bent at a right angle toward the casing is provided, wherein the motor is in contact with the supporting piece, the bracket preferably those is formed a gap filling part, and the gap filling part is positioned in a gap between said motor and said inner edge located on both sides of the support piece.

  When the support piece bent integrally from the inner edge of the hole or notch of the housing is formed, a step is formed on both sides of the support piece by the thickness of the support piece. When the motor facing or the like is brought into close contact with the support piece, a gap is formed in the stepped portion. By forming a gap filling portion in the bracket, it is possible to prevent a gap from being formed in the stepped portion.

According to the present invention, the bottom surface of the motor is configured to be substantially flush with the outer surface of the housing, so that there is no protrusion from the outer surface of the housing and the internal space of the housing is effectively used. it can.

  In the electronic device of the present invention, the space in the housing can be effectively used by interposing a part of the motor inside the hole or notch of the housing. Since the gap between the inner edge of the hole or notch of the housing and the outer surface of the motor can be closed as much as possible, it is easy to prevent dust from entering. Furthermore, the motor located in the hole or notch can be positioned and firmly fixed by the bracket.

  FIG. 1 is a side view showing an in-vehicle electronic device as an embodiment of the present invention, FIG. 2 is a plan view showing a structure inside a housing of the electronic device of FIG. 1, and FIG. 3 (A) is a main part of the present invention. FIG. 3B is an explanatory view of a hole in the housing, FIG. 4 is a transverse sectional view taken along line IV-IV in FIG. 2, and FIG. FIG. 6 to FIG. 8 are longitudinal sectional views sequentially showing steps of fixing the bracket to the housing.

  As shown in FIG. 1, the in-vehicle electronic device 1 includes a housing 2 and a movable panel 7. The electronic device 1 has a 1DIN or 2DIN size. The housing 2 is made of sheet metal obtained by press-molding a steel plate, and is embedded in, for example, a dashboard or an instrument panel in a vehicle cabin.

  Inside the housing 2 are housed a circuit board on which an electronic circuit is mounted, a disk drive mechanism for driving a disk such as a CD, DVD or MD, and various electronic devices such as a tuner. A front panel 3 having an accommodation recess capable of accommodating the rear portion (Y2 side portion) of the movable panel 7 is provided in front of the housing 2 (Y1 side).

  The movable panel 7 is provided with a display device such as various operation buttons and a liquid crystal panel on the front surface 7a. A sliding pin 4 is fixed to the upper part of the side surface of the movable panel 7, and the sliding pin 4 is guided in the vertical direction by a guide portion 3a formed substantially perpendicular to the inner wall of the housing recess of the front panel 3. Yes. A drive connection pin 5 is provided at a lower portion of the side surface of the movable panel 7, and this drive connection pin 5 is connected to a front portion of a reciprocating drive member 10 provided so as to be able to advance and retreat in and out of the housing 2. Yes.

  FIG. 2 shows a state in which the front opening 2A of the housing 2 is shown upward in the figure, the front panel 3 and the movable panel 7 are removed, and the ceiling plate is removed.

  The reciprocating drive member 10 is supported inside the bottom surface 2a of the housing 2 so as to be movable forward and backward (Y1 direction) and rearward (Y2 direction). When the reciprocating drive member 10 is retracted rearward, the movable panel 7 assumes a vertical posture that is substantially in close contact with the front surface of the front panel 3 as shown in FIG. When the reciprocating drive member 10 moves forward through the open portion 2A, the movable panel 7 assumes an inclined posture according to the amount of forward movement, and when the reciprocating drive member 10 further advances most, the movable panel 7 assumes a substantially horizontal posture. Become.

  As shown in FIG. 2, the reciprocating drive member 10 has a U-shaped planar shape and has arm portions 10A and 10B extending in the Y direction in the drawing. The X1 side edge of the arm 10A is bent upward at a right angle to form a moving plate 10D, and the X2 side edge of the arm 10B is bent upward at a right angle to form a moving plate 10E. . FIG. 2 shows a state in which the reciprocating drive member 10 is most retracted in the Y2 direction. At this time, the moving plate 10D and the tip of the moving plate 10E protrude forward from the open portion 2A. 10D and the tip of the moving plate 10E are rotatably connected to the lower part of the side surface of the movable panel 7 via the drive connecting pins 5 and 5.

  The arm portions 10A and 10B are formed with long holes 10a and 10b extending in the Y direction in the drawing. Guide convex portions 11a, 11b, and 12a are fixed to the bottom surface 2a of the housing 2, and the reciprocating drive member 10 is guided by the elongated holes 10a and 10b being guided by the guide convex portions 11a, 11b, and 12a. It can be moved back and forth linearly in the Y direction.

  One arm portion 10 </ b> A of the reciprocating drive member 10 is provided with a rack 10 c whose teeth are arranged along the Y direction. The rack 10 c can reciprocate in the Y direction together with the reciprocating drive member 10. ing. A pinion gear 23 is rotatably supported by a shaft 23a on the bottom surface 2a of the housing 2, and the pinion gear 23 meshes with the rack 10c.

  A shaft 22a is fixed to the bottom surface 2a, and a drive gear 22 is rotatably provided on the shaft 22a. The drive gear 22 is driven by a motor M. The bottom surface 2a is provided with a reduction gear train that reduces and transmits power from the drive gear 22 to the pinion gear 23.

  As shown in FIG. 3 (A), FIG. 4 and FIG. 5, the motor M is a DC motor and is parallel to the outer side surfaces M2 and M2 formed in a cylindrical curved surface, a planar bottom M7, and the bottom M7. It has a flat top surface. The front end surface M3 and the rear end surface M4 of the motor M are parallel to each other, and the shaft M1 projects from the front end surface M3. The front end face M3 is formed with a cylindrical protrusion M5 formed by projecting a bearing that supports the shaft M1, and the rear end face M4 is also formed with a bearing that supports the shaft M1. A cylindrical protrusion M6 is provided.

  A worm gear 21 is fixed to the shaft M 1, and the worm gear 21 meshes with the drive gear 22.

  As shown in FIGS. 3A and 3B, a rectangular hole 8 is formed in the bottom surface 2 a of the housing 2. The hole 8 is formed through a sheet metal material that is a plate-like material forming the bottom surface 2a. As shown in FIG. 4 and FIG. 5, the bottom surface M7 of the motor M intervenes in the hole 8, and the bottom surface M7 and the outer surface of the bottom surface 2a are substantially flush with each other. By installing the motor M in this way, the internal space of the housing 2 can be effectively used. The casing 2 is provided with a notch that is open at the edge of the bottom surface 2a and formed in a concave shape from the edge, instead of the rectangular hole 8, and one of the motors M is provided in the notch. The part may enter.

  FIG. 3B shows the planar shape of the hole 8. As shown in FIG. 3B, a front inner edge 8 a, a rear inner edge 8 b, and a side inner edge are formed around the rectangular hole 8. 8c and 8c are located. The sheet metal material forming the bottom surface 2a is bent at a right angle from the rear inner edge 8b toward the inside of the housing 2 to form a support piece 2c. As shown in FIG. 3A, a circular support hole 2c1 is formed through the support piece 2c.

  As shown in FIG. 3B, as a result of the support piece 2c being bent from the rear inner edge 8b so as to rise at a right angle, the base of the support piece 2c protrudes in the X1 direction from the rear inner edge 8b. ing. Therefore, at the base of the support piece 2c, on both sides of the Y1 side and the Y2 side, between the surface 2c2 facing the X1 side of the support piece 2c and the rear inner edge 8b, the same dimension as the plate thickness dimension T of the support piece 2c. Step recesses 2c3 and 2c3 having dimensions slightly deeper than or above T are formed.

  In the bottom surface 2a, an elongated hole 2d that penetrates the bottom surface 2a and extends in the X direction is formed on the X2 side of the support piece 2c. The sheet metal material forming the bottom surface 2a is formed so as to bulge on the side of the front inner edge 8a of the hole 8 on the Y2 side and in front of the X1 direction, and a support base 2e and a support base 2f are formed on the bottom surface 2a. Female screw holes 2e1 and 2f1 are formed in the respective support bases 2e and 2f.

  As shown in FIG. 3A, the motor M is supported by the bracket 30. The bracket 30 is made of a synthetic resin and has a frame shape. The bracket 30 is formed with a rectangular through hole 34 extending vertically. The bracket 30 is formed with holding portions 31, 31 provided to face both sides of the through hole 34. As shown in FIG. 4, the holding part 31 and the opposing surface of the holding part 31 have a concave curved surface shape so that the outer sides M2 and M2 of the motor M can be in close contact with each other.

  A contact portion 32 extending perpendicularly to the Z1 direction is integrally formed on the X1 side of the bracket 30 so that the front end face M3 of the motor M is in contact therewith. The contact portion 32 is formed with a support recess 32a that supports the protrusion M5 of the motor M. Further, in the through hole 34, gap filling portions 31a and 31a covering the step recesses 2c3 and 2c3 shown in FIG. 3B are provided inside the edge portion on the X2 side and on the corner portions on the Y1 side and the Y2 side. It is integrally formed.

  The bracket 30 is integrally formed with fixing portions 35 and 36 extending in the X1 direction. The fixing portion 35 has an attachment hole 35a, and the fixing portion 36 has an attachment hole 36a. The bracket 30 is integrally formed with an extension 33 extending in the X2 direction, and a protrusion 38 is formed at the rear end of the extension 33. A positioning projection 38 a is formed on the lower surface of the projection 38.

6 to 8 show a process of attaching the bracket 30 to the bottom surface 2a.
As shown in FIG. 6, when the bracket 30 is installed on the bottom surface 2a of the housing 2, the X-side edge of the through hole 34 of the bracket 30 and the gap 37 between the gap filling portions 31a and 31a are disposed. The support piece 2c on the housing 2 side is inserted. When the bottom surface of the bracket 30 is in contact with the bottom surface 2a in this state, the positioning protrusion 38a enters the inside of the long hole 2d formed in the bottom surface 2a.

  As shown in FIG. 7, the bracket 30 is moved in the X2 direction, and the positioning projection 38a is moved in the X2 direction within the elongated hole 2d. As a result, as shown in FIG. 8, the gap filling portions 31a and 31a of the bracket 30 enter into the recesses formed on both sides of the base portion of the support piece 2c, and the gap filling portions 31a and 31a are shown in FIG. The step recesses 2c3 and 2c3 shown in FIG. At this time, the mounting holes 35a and 36a of the bracket 30 coincide with the female screw holes 2e1 and 2f1.

  The bracket 30 is fixed to the bottom surface 2a by inserting mounting screws into the mounting holes 35a and 36a and screwing the mounting screws into the female screw holes 2e1 and 2f1. When fixed in this manner, the through hole 34 of the bracket 30 is positioned inside the hole 8 formed in the bottom surface 2a as shown in FIGS.

  As shown in FIG. 4, the motor M is attached so that the outer side surfaces M <b> 2 and M <b> 2 are in close contact with the curved surfaces of the inner surfaces of the holding portions 31 and 31 of the bracket 30. At this time, as shown in FIG. 5, the rear projecting portion M6 of the motor M is inserted into the support hole 2c1 of the support piece 2c, the rear end face M4 of the motor M is brought into contact with the support piece 2c, and the motor The front end surface M3 of M is brought into contact with the contact portion 32 of the bracket 30, and the protruding portion M5 of the motor M is fitted into a support recess 32a formed in the contact portion 32.

The motor M and the bracket 30 are fixed to each other by screwing or bonding.
When the bracket 30 and the motor M are attached to the bottom surface 2a, the outer surfaces M2 and M2 of the motor M are brought into close contact with the holding portions 31 and 31 of the bracket 30, as shown in FIG. The gap between the outer surfaces M2 and M2 and the side inner edges 8c and 8c of the hole 8 is covered and closed by the bottom surfaces of the holding portions 31 and 31 of the bracket 30.

  As shown in FIG. 5, the front end surface M3 of the motor M is in contact with the contact portion 32 of the bracket 30. The gap between the front end surface M3 and the front inner edge 8a of the hole 8 is It is blocked by being covered with the bottom surface of the portion where the contact portion 32 is formed.

  Further, the rear end surface M4 of the motor M abuts on the support piece 2c bent from the bottom surface 2a of the housing 2. As shown in FIG. 3B, step recesses 2c3 and 2c3 are formed on both sides of the support piece 2c, and a gap is formed between the rear end surface M4 of the motor M and the rear inner edge 8b of the hole 8 at this portion. However, the gap is closed by the gap filling portions 31a and 31a.

  As shown in FIGS. 4 and 5, the bottom surface M7 of the motor M is substantially flush with the outer surface of the bottom surface 2a of the housing 2, so that the installation height of the motor M on the bottom surface 2a can be minimized. The arrangement space of various mechanisms inside the 2 can be effectively used. Further, since the space between the outer surface of the motor M and the inner edge of the hole 8 is blocked by the bottom surface of the bracket 30, it is possible to prevent dust and the like from entering the housing 2 from the outside.

  In addition, since the motor M is firmly fixed by the bracket 30 and positioned, it is possible to avoid unnecessary vibration during operation.

  In the embodiment, the hole 8 is formed in the bottom surface 2a of the housing 2. However, the hole 8 may be formed in a side plate or a ceiling plate of the housing.

The side view which shows the vehicle-mounted electronic device as embodiment of this invention, The top view which shows the internal mechanism of the housing | casing of the electronic device of FIG. The exploded perspective view of the attachment part of the motor which is the principal part of the present invention, FIG. 2 is a transverse sectional view taken along line IV-IV in FIG. FIG. 2 is a longitudinal sectional view taken along line VV in FIG. Sectional drawing which shows the process of installing a bracket in the bottom face of a housing | casing, Sectional drawing which shows the process which installed the bracket in the bottom face of a housing | casing, Sectional drawing which shows the state in which the bracket was positioned in the bottom face of a housing | casing,

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic device 2 Case 2a Bottom face 2c of support case Support piece 2c1 Support hole 2c3 Stepped recess 2d Long hole 3 Front panel 7 Movable panel 8 Hole 8a Front inner edge 8b Rear inner edge 8c Side inner edge 10 Reciprocating drive member 10c Rack 21 Warm gear 23 pinion gear 30 bracket 31 holding portion 31a gap filling portion 32 abutting portion 32a support recess 34 through hole M motor M2 motor outer surface M3 motor front end surface M4 motor rear end surface

Claims (3)

The interior of a formed sheet metal housing, an electronic apparatus in which the motor outer surface is cylindrically curved surface is provided,
Wherein the housing, the hole or notch through said sheet metal is formed, the bracket for supporting the motor is attached to the housing,
The bracket is made of synthetic resin, and has a through hole that communicates with the inside and outside of the housing inside the hole or notch, and a holding portion that rises from both sides of the through hole,
The motor has an outer surface closely attached to the inner surface of the holding portion and is supported by the bracket, and a bottom portion of the motor enters the hole or notch formed in the housing,
The electronic device , wherein the holding portion of the bracket covers a gap between the outer surface of the motor and the inner edge of the hole or notch . Wherein the hole or notch of the inner sheet metal the support piece which is bent at a right angle toward the casing is provided, wherein the motor is in contact with the supporting piece, the supplement part to the bracket formed It has been the support piece electronic apparatus according to claim 1 Symbol mounting the gap filling part in the gap between the said inner motor is located located on both sides of the. It said bottom surface of the motor, the housing outer surface substantially electronics located in the same plane and according to claim 1 or 2.

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