JP3096975U - Motor mounting structure - Google Patents

Abstract

In a motor mounting structure for a chassis, a plurality of types of motors having different outer diameters and the like can be mounted with one screw.
A positioning for positioning the motor by bending the vicinity of the motor mounting portion at two positions toward the motor at an interval smaller than a minimum outer diameter of the plurality of types of the motor. Parts 4 and 5 are formed. Screw holes 31, 32, 33 through which fixing screws 6 for fixing the motor 2 penetrate are formed at positions facing the positioning portions 4, 5 with the output shaft 7 of the motor 2 interposed therebetween. The rotation of the motor 2 around the fixing screw 6 is restricted by the positioning portions 4 and 5 abutting on the side surface 21 of the outer cylindrical portion of the motor 2. A plurality of types of motors 2 having different diameters can be attached.
[Selection] Fig. 2

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a motor mounting structure for mounting a motor on a chassis of an electric device such as a video cassette recorder.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a motor is mounted on a chassis of a video cassette recorder by positioning the motor on a motor mounting portion of the chassis and fastening a fixing screw. Normally, two or more female screws for screwing a fixing screw are formed on the front surface of the outer cylindrical portion of the motor, and the motor is fixed to the chassis by fastening the fixing screw corresponding to each female screw. You.
[0003]
Such a structure in which the motor is mounted by fastening two or more fixing screws increases the number of components of the device and the number of assembling steps, and cannot reduce the manufacturing cost of the video cassette recorder. Therefore, conventionally, various structures have been proposed in which a motor can be attached by fastening one fixing screw.
[0004]
As an example, at a position corresponding to any of the internal threads of the motor mounting portion, a positioning boss for positioning the motor is protruded by press molding, and after engaging one internal thread and the positioning boss, the other internal thread is engaged. 2. Description of the Related Art A motor mounting structure configured to fix a motor by screwing a fixing screw is known (for example, see Patent Document 1). Further, a plurality of support shafts for supporting the lower surface and the side surface of the motor are erected on the resin chassis, and a washer screw is mounted on a tip surface of any of the support shafts for supporting the side surface, and a flange portion of the washer screw is provided. There is known a motor mounting structure configured to fix the upper surface of a motor (see, for example, Patent Document 2).
[0005]
[Patent Document 1]
Japanese Patent Application Laid-Open No. Hei 5-342636 [Patent Document 2]
Registered Utility Model No. 3046967
[Problems to be solved by the invention]
By the way, in a production line of a mass-produced video cassette recorder, a plurality of types of motors having the same rotation characteristics but different outer diameters and female screw formation positions are provided due to circumstances such as a motor purchase route and a purchase time. Is often used as appropriate. However, in the motor mounting structure disclosed in Patent Literature 1, since the positioning boss is protruded in correspondence with the formation position of the female screw, a plurality of types of motors having different formation positions of the female screw cannot be mounted. Further, in the motor mounting structure disclosed in Patent Document 2, since the support shaft is erected so as to circumscribe the side surface of the outer cylindrical portion of the motor, it is possible to mount a plurality of types of motors having different outer diameters. Can not.
[0007]
The present invention has been made to solve the above-described problem, and provides a motor mounting structure that can mount a plurality of types of motors having different outer diameters and female screw forming positions to a chassis with a single screw. The purpose is to:
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a motor, a pulley mounted on an output shaft of the motor, a belt stretched over the pulley, and an output of the motor transmitted through the pulley and the belt. In a motor mounting structure for a video cassette recorder having a tape loading mechanism for performing tape loading on a chassis, the vicinity of the motor mounting portion of the chassis is formed by bending at least two places substantially at right angles to the motor side, and the outer cylinder portion of the motor is formed. And a positioning portion that abuts the side surface of the motor and positions the motor, and is formed at a position corresponding to a female screw formed on the front surface of the outer cylindrical portion of a plurality of types of motors having different outer diameters attached to the motor mounting portion. A screw hole, and a fixing screw that penetrates the screw hole and is screwed to the female screw of the motor to fix the motor. The positioning portion is formed at an interval smaller than the minimum outer diameter of the plurality of types of motors having different outer diameters, and the screw hole is formed at a position facing the positioning portion across the output shaft of the motor. When the positioning portion contacts the outer cylinder portion of the motor, the rotation of the outer cylinder portion around the fixing screw is restricted, and a plurality of types of motors having different outer diameters are attached to the chassis by fastening one fixing screw. It can be attached.
[0009]
According to this configuration, the motor is positioned by bringing the side surface of the outer cylindrical portion of the motor into contact with the positioning portion, and in this state, the fixing screw is screwed into the female screw on the front surface of the outer cylindrical portion to thereby connect the motor to the chassis. Can be fixed to Since the screw hole through which the female screw penetrates is formed at a position opposed to the positioning portion formed at two places with the output shaft of the motor interposed therebetween, in any rotational direction of the outer cylindrical portion around the fixing screw. Can also be restricted.
[0010]
In addition, since the positioning portion is formed at a smaller interval than the minimum outer diameter of the outer diameters of the plurality of types of motors attached to the chassis, any one of the plurality of types of motors having different outer diameters can be used. Can be installed as needed. At this time, although the position of the output shaft is different for each motor, the belt stretched on the pulley can absorb the fluctuation of the position of the output shaft.
[0011]
According to a second aspect of the present invention, in the structure for mounting the motor on the chassis, the positioning portion is formed so as to protrude from the vicinity of the motor mounting portion of the chassis toward the motor, and abuts the side surface of the outer cylindrical portion of the motor to position the motor. A screw hole formed at a position corresponding to a female screw formed on the front surface of the outer cylindrical portion of the motor attached to the motor mounting portion, and the motor is screwed into the female screw of the motor through the screw hole. A fixing screw for fixing the motor, the positioning portion abuts against the side surface of the outer cylinder portion of the motor, thereby restricting the rotation of the outer cylinder portion around the fixing screw, and fastening one motor fixing screw. The motor can be attached to the chassis.
[0012]
According to this configuration, the motor is positioned by bringing the side surface of the outer cylindrical portion of the motor into contact with the positioning portion, and in this state, the fixing screw is screwed into the female screw on the front surface of the outer cylindrical portion to thereby connect the motor to the chassis. Can be fixed to
[0013]
According to a third aspect of the present invention, in the motor mounting structure according to the second aspect, the positioning portion is provided at an interval smaller than a minimum outer diameter among a plurality of types of motors having different outer diameters attached to the chassis. At least two locations are formed, and the screw holes are formed at positions corresponding to the female threads of a plurality of types of motors having different outer diameters, and a plurality of types of motors having different outer diameters can be attached to the chassis by fastening one fixing screw. It is what it was.
[0014]
According to this configuration, the positioning portion is formed at intervals smaller than the minimum outer diameter of the plurality of types of motors mounted on the chassis. Such a motor can be attached as needed.
[0015]
[Embodiment of the invention]
A motor mounting structure according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a mounting structure of a loading motor (hereinafter, referred to as a motor) for outputting a driving force for tape loading in a video cassette recorder. The motor mounting structure 1 includes a motor 2, a motor mounting portion 3 serving as a base surface for mounting the motor 2, positioning portions 4 and 5 for positioning the motor 2, and a motor 2 positioned by the positioning portions 4 and 5. It is composed of fixing screws 6 for fixing.
[0016]
A pulley 8 is mounted on a tip of an output shaft 7 of the motor 2, and a belt 9 for transmitting an output of the motor 2 to a loading mechanism (not shown) is stretched over the pulley 8. The motor mounting portion 3 is provided on a side surface of the chassis 10 formed by pressing a metal plate. The positioning portions 4 and 5 are formed by bending the vicinity of the motor mounting portion 3 at substantially two right angles, and abut (line contact) with the side surface 21 of the outer cylindrical portion of the motor 2 to position the motor 2.
[0017]
2A shows a side surface of the motor mounting structure 1, and FIG. 2B shows a side surface of the motor mounting structure 1 in the direction of arrow A in FIG. In FIG. 2, the pulley 8 and the belt 9 are omitted. On the front surface 22 of the outer cylindrical portion of the motor 2, female screws 23 and 23 a for fixing the motor 2 to the chassis 10 and the like are formed at two locations facing each other with the output shaft 7 interposed therebetween. However, in the motor mounting structure 1 of the present embodiment, only one female screw 23 is used to fix the motor 2, and the other female screw 23a is not used.
[0018]
In addition to the positioning portions 4 and 5, the motor mounting portion 3 has screw holes 31, 32 and 33 through which the fixing screws 6 penetrate at positions facing the positioning portions 4 and 5 with the output shaft 7 of the motor 2 interposed therebetween. A through hole 34 is formed around the output shaft 7 to allow the output shaft 7 and the bearing portion 24 to pass therethrough. The motor mounting structure 1 of the present embodiment is a structure that can appropriately mount three types of motors having different outer diameters and positions where the female screws 23 are formed. Therefore, the motor mounting portion 3 has three screw holes 31, 32, 33 are formed. Here, the position facing the positioning portions 4 and 5 with the output shaft 7 of the motor 2 interposed therebetween means that each straight line connecting the screw holes 31, 32 and 33 and the output shaft 7 corresponds to the positioning portion 4 and the positioning portion 4. The position where the screw holes 31, 32, 33 are formed so as to pass between the portions 5. The inner diameter of the through hole 34 is slightly larger than the bearing 24 of the motor 2 so that three types of motors can be attached.
[0019]
The positioning portions 4 and 5 are formed at intervals smaller than the minimum outer diameter of the three types of motors so that three types of motors having different outer diameters can be attached. Here, the interval between the positioning portions 4 and 5 may be appropriately set according to the outer diameter of the motor 2 to be used, but in order to secure the mounting rigidity of the motor 2, it is about の of the outer diameter of the motor 2. It is desirable to set to. The fixing screw 6 has the same diameter and pitch as the female screw 23. FIG. 2 shows a state in which the large-diameter motor 2 among the motors fixed to the chassis 10 is fixed to the chassis 10 by fixing screws 6 penetrating the screw holes 31. That is, the motor 2 is positioned by the side surface 21 of the outer cylindrical portion abutting on the opposing edges of the positioning portions 4 and 5, and the motor 2 is maintained while the side surface 21 and the positioning portions 4 and 5 are kept in contact with each other. After rotating the outer cylinder of the motor 2 to align the screw hole 31 with the female screw 23, the motor 2 is attached to the chassis 10 by passing the fixing screw 6 through the screw hole 31 and screwing with the female screw 23. Fixed. At this time, since the two positioning portions 4 and 5 abut against the side surface 21 of the outer cylindrical portion of the motor 2, the rotation of the outer cylindrical portion around the fixing screw 6 in any rotational direction is regulated, and the motor 2 is rotated. 2 is firmly fixed to the chassis 10 by one fixing screw 6.
[0020]
FIG. 3 shows a state in which a motor 2 ′ having a smaller outer diameter than the motor shown in FIG. 2 is fixed to the chassis 10 by a fixing screw 6 penetrating the screw hole 32. At this time, since the motor 2 'is positioned so that the side surface 21 of the outer cylindrical portion is in contact with the positioning portions 4 and 5, the output shaft 7 of the motor 2' is slightly retracted as compared with the state shown in FIG. However, the tension of the belt 9 (see FIG. 1) is slightly increased. However, usually, the material applied to the belt 9 has elasticity and allows a certain amount of change in tension, so that the change in the position of the output shaft 7 is absorbed by the belt 9. FIG. 3 shows a state in which the motor 2 ′ is mounted using the screw holes 32. However, if the screw holes 33 are used, another motor having a different outer diameter and a different position of the female screw can be mounted. It is possible.
[0021]
According to the motor mounting structure 1 configured as described above, the side surfaces 21 of the outer cylindrical portions of the motors 2, 2 '... Are fixed, and the motor 2 is fixed to the chassis 10 by screwing the fixing screw 6 to the female screw 23 on the front surface 22 of the outer cylinder portion. Thus, even when any one of a plurality of types of motors 2, 2 '... . Can be mounted on the motor 10, and the number of parts and the number of assembling steps of the motor mounting structure 1 can be reduced. Further, since the belt 9 stretched around the pulley 8 absorbs the change in the position of the output shaft 7 caused when the motors 2, 2 '... Having different outer diameters are attached, the motors 2, 2'. It is not necessary to readjust the arrangement of the drive system according to the conditions.
[0022]
The present invention can be variously modified without being limited to the configuration of the above-described embodiment. For example, the motor mounting structure 1 is not limited to the loading motor 2 of the video cassette recorder, but may be used for other electric devices. It can also be applied to various types of motors. Further, the present invention is not limited to the configuration in which a plurality of screw holes are formed corresponding to a motor to be used, and one or a plurality of oval screw holes may be used instead. Further, as a means for transmitting the driving force to the tape loading mechanism, it is most preferable to use the pulley 8 and the belt 9 and the like. However, the driving force may be transmitted by a plurality of gears. Further, the chassis 10 is not limited to a form formed by press-molding a metal plate, and may be a resin molded product by injection molding. In this case, the positioning portion is integrally formed with the motor mounting portion. Protrusion may be formed. Furthermore, three or more positioning portions may be formed.
[0023]
[Effect of the invention]
As described above, according to the invention of claim 1, even when any one of a plurality of types of motors is appropriately selected and used, the outer diameter of the chassis is reduced by fastening one fixing screw. Since a plurality of different types of motors can be mounted, the number of parts and the number of assembling steps of the motor mounting structure can be reduced, and the manufacturing cost can be reduced. Further, since the belts stretched on the pulleys absorb the fluctuations in the position of the output shaft caused by mounting motors having different outer diameters, it is necessary to readjust the arrangement of the drive system according to the change in the motor. Absent.
[0024]
According to the invention of claim 2, since the motor can be mounted on the chassis by fastening one fixing screw, the number of parts and the number of assembling steps of the motor mounting structure can be reduced, and the manufacturing cost can be reduced. Will be possible.
[0025]
According to the invention of claim 3, even when any one of a plurality of types of motors is appropriately selected and used, a plurality of types of motors having different outer diameters are attached to the chassis by fastening one fixing screw. Since the motor can be mounted, the number of parts and the number of assembling steps of the motor mounting structure can be reduced, and the manufacturing cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a motor mounting structure according to an embodiment of the present invention.
2 (a) is a side view of the same structure, and FIG. 2 (b) is a side view from the direction of arrow A in FIG. 2 (a).
FIG. 3 is a side view showing a state where a motor having a small outer diameter is attached to the same structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Motor mounting structure 2 Motor 3 Motor mounting parts 4, 5 Positioning part 6 Fixing screw 7 Output shaft 8 Pulley 9 Belt 10 Chassis 23 Female screw 31, 32, 33 Screw hole

Claims (3)

A motor, a pulley mounted on the output shaft of the motor, a belt stretched over the pulley, and a tape loading mechanism that performs tape loading by transmitting the output of the motor via the pulley and the belt. In the structure of attaching the motor to the chassis of the video cassette recorder
A positioning portion that is formed by bending at least two places near the motor side in the vicinity of the motor mounting portion of the chassis at a substantially right angle, and that contacts the side surface of the outer cylindrical portion of the motor to position the motor;
A screw hole formed at a position corresponding to a female screw formed on the front surface of the outer cylindrical portion of a plurality of types of motors having different outer diameters attached to the motor mounting portion,
A fixing screw for fixing the motor by penetrating the screw hole and being screwed into a female screw of the motor;
The positioning portion is formed at a smaller interval than the minimum outer diameter of the outer diameters of the plurality of types of motors having different outer diameters,
The screw hole is formed at a position facing the positioning portion with the output shaft of the motor interposed therebetween,
The positioning portion abuts on the outer cylinder portion of the motor, thereby restricting the rotation of the outer cylinder portion around the fixing screw, and a plurality of fixing members having different outer diameters are fixed to the chassis by fastening one fixing screw. A motor mounting structure characterized in that various types of motors can be mounted. In the structure for mounting the motor to the chassis,
A positioning portion formed so as to protrude toward the motor from the vicinity of the motor mounting portion of the chassis and abutting against a side surface of the outer cylindrical portion of the motor to position the motor;
A screw hole formed at a position corresponding to a female screw formed on the front surface of the outer cylindrical portion of the motor attached to the motor attachment portion,
A fixing screw for fixing the motor by being screwed into the female screw of the motor through the screw hole,
The positioning portion contacts the side surface of the outer cylinder portion of the motor, thereby restricting the rotation of the outer cylinder portion around the fixing screw, and attaching the motor to the chassis by fastening one motor fixing screw. A motor mounting structure characterized by being made possible. The positioning portion is formed in at least two places at intervals smaller than the minimum outer diameter among the outer diameters of a plurality of types of motors having different outer diameters attached to the chassis,
The screw holes are formed at positions corresponding to female screws of a plurality of types of motors having different outer diameters,
The motor mounting structure according to claim 2, wherein a plurality of types of motors having different outer diameters can be mounted on the chassis by fastening one fixing screw.

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