JP2018011436A - Motor device, and manufacturing method of frame body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor device comprising a frame body that supports a shaft body rotated by the driving force of the motor, and is capable of flexibly absorbing a dimensional error of a material used for the frame, and a manufacturing method of the frame body.SOLUTION: A motor device comprises: a motor 200 being a drive source; shaft body 300 which rotates by driving force of the motor; and a frame body 400 which supports the shaft body, in which the frame body has a base part 410, a shaft support part 420, and a parts to be fixed 430, the base part is arranged along the axial direction of the shaft body supported by the shaft support part, the parts to be fixed are portions which extend from the base part and fix the frame body to other members, and adjustment parts 431 which are formed by half-blanking and a step to the base part are provided for the parts to be fixed. A manufacturing method includes a process of adjusting a half-blanking amount of the adjustment parts such that a height dimension from a contact surface of the parts to be fixed with other members to a support position of the shaft body matches a predetermined reference value.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a motor device and a method for manufacturing a frame.

  Patent Document 1 listed below discloses a motor attachment plate for attaching a motor to a chassis of an electronic device.

JP-A-1-264543

  For example, in a device including a lead screw that converts a rotational motion of a motor into a linear motion, when the position of a nut member to be combined with the lead screw is determined in advance, the position of the lead screw is accurately matched with the position of the nut member. There is a need. In particular, when such a device is small and more precise operation is required, high positioning accuracy is required for the support member of the lead screw. The same applies to devices having other rotating shafts such as worm gears.

  When there is an error between individuals in the dimensions of the material used for the support member of such a rotation shaft, this error causes a reduction in the operation accuracy of the rotation shaft and the member combined with the rotation shaft. Moreover, when the single sheet-metal raw material is shape | molded by the bending process like the said patent document 1, it is necessary to adjust a press die according to such an error, Production efficiency decreases.

  In view of the above problems, a problem to be solved by the present invention is a frame body that supports a shaft body that is rotated by a driving force of a motor, and a frame body that can flexibly absorb a dimensional error of a material used for the shaft body. It is in providing the motor apparatus provided and the manufacturing method of such a frame.

  In order to solve the above problems, a motor device of the present invention includes a motor that is a drive source, a shaft that rotates by a driving force of the motor, and a frame that supports the shaft, and the frame is A base portion, a shaft support portion, and a fixed portion, and the base portion is disposed along an axial direction of the shaft body supported by the shaft support portion, and the fixed portion is the base portion The frame body is a part that fixes the frame body to another member, and the fixed part is provided with an adjustment part that is a step with the base part formed by half punching. To do. The base portion is a flat plate portion having one plate surface facing the shaft body side, and the shaft support portion supports the shaft body in parallel with the base portion, and the fixed portion Is preferably a flat plate portion extending from a part of the side surface of the base portion to the outside in the planar direction of the base portion.

  Absorbing the thickness error of the material used for the base and the fixed part with the step width of the adjustment part by providing the adjustment part formed by half punching in the fixed part extending from the base part of the frame Can do. By supporting the shaft body with this frame body, it becomes possible to maintain a constant height dimension from the lower surface of the fixed portion (contact surface with other members) to the shaft body. The positional accuracy with the member combined with can be improved. In addition, it is easier to adjust the half-punch amount of the mold compared to other processing methods such as bending, so it is possible to flexibly cope with material thickness errors while suppressing the effect on production efficiency. It becomes.

  Further, it is preferable that a screw hole penetrating in the height direction of the step is formed in the fixed portion.

  For example, when the adjustment portion is formed by step bending or the like, the area of the lower surface of the fixed portion varies according to the step width of the adjustment portion. If a screw hole is formed in this fixed part, it will move to the position of the screw hole due to a change in the step width of the adjustment part, so that the frame and other members to which the frame is fixed fit. Sexuality is impaired. On the other hand, since the adjustment part of the present invention is a step formed by half-punching, the fixed part can be moved up and down with respect to the base while maintaining the positional relationship between the screw hole and the other member. . Therefore, the adjustment part of this invention can adjust the level | step difference width of an adjustment part, without impairing the compatibility with the other member to which a frame is fixed.

  Moreover, it is preferable that the said frame is comprised with the single sheet metal raw material, and the said shaft support part is a standing part bent by the said shaft body side from the said base.

  By forming the frame body from a single sheet metal material, the number of parts constituting the frame body and its assembly tolerance can be suppressed, and the positioning accuracy of the shaft body by the frame body can be increased. At this time, the distance between the base portion of the frame body and the shaft body is fixed uncorrectably, but the frame body of the present invention has an adjustment portion in the fixed portion, and adjusts the step width of the adjustment portion. By doing so, the thickness error of the sheet metal member can be absorbed, so that the height dimension from the lower surface of the fixed portion to the shaft body can be kept constant.

  In addition, it is preferable that only the fixed portion of the frame body is in contact with the other member.

  When the lower surface of the base portion of the frame body is in contact with another member, the surface accuracy of the base portion and the other member may affect the position of the shaft body. Such an influence can be minimized by adopting a configuration in which only the lower surface of the fixed portion is brought into contact with another member.

  Further, the shaft body includes a cylindrical rotating tube portion that is rotated by a driving force of the motor, and a support shaft portion that is inserted into the tube of the rotating tube portion, It is preferable that a spiral groove is formed on the outer peripheral surface, and the shaft support portion supports the support shaft portion.

  By adopting a configuration in which the support shaft portion is inserted into the cylinder of the rotating cylinder portion and the rotating cylinder portion is supported by the support shaft portion over the entire length thereof, the inclination and deflection of the shaft body are suppressed, and the shaft body and the shaft body The positional accuracy with the member combined with can be further increased.

  In order to solve the above-mentioned problem, in the manufacturing method of a frame body for supporting a shaft body according to the present invention, the frame body is constituted by a single sheet metal material, and the frame body includes a base portion and a shaft support portion. And the fixed portion, and the base portion is a flat plate portion disposed with one plate surface facing the shaft body side, and the shaft support portion is bent from the base portion to the shaft body side. The upright portion that supports the shaft body along the base portion, and the fixed portion extends from a part of the side surface of the base portion to the outside in the planar direction of the base portion, and fixes the frame body to another member. A half-punch amount of the adjusting portion so that a height dimension from a contact surface with the other member of the fixed portion to a support position of the shaft body matches a predetermined reference value. And a step of adjusting.

  Absorbing the thickness error of the sheet metal member used for the frame with the step width of the adjustment part by forming the adjustment part by half-punching on the fixed part extending in the plane direction from the base part of the frame body Can do. By supporting the shaft body with this frame body, the height dimension from the lower surface of the fixed portion to the shaft body can be maintained constant, and the positional accuracy between the shaft body and the member combined with the shaft body can be improved. Can be increased. In addition, it is easier to adjust the half-punch amount of the mold compared to other processing methods such as bending, so it is possible to flexibly cope with material thickness errors while suppressing the effect on production efficiency. It becomes. Further, by forming the frame body from a single sheet metal material, the number of parts constituting the frame body and its assembly tolerance can be suppressed, and the positioning accuracy of the shaft body by the frame body can be increased. At this time, the distance between the base portion of the frame body and the shaft body is fixed uncorrectably, but the frame body of the present invention has an adjustment portion formed on the fixed portion, and adjusts the step width of the adjustment portion. Since the thickness error of the sheet metal member can be absorbed, the height dimension from the lower surface of the fixed portion to the shaft body can be kept constant.

  Further, in the method of manufacturing the frame body, when there is an error between a height dimension from a contact surface of the fixed part with the other member to a support position of the shaft body and a predetermined reference value, It is preferable that the method further includes a step of readjusting the half-punch amount of the adjustment unit.

  Adjustment of the half-punch amount of the mold is easy compared to other processing methods such as bending, so even if there is an error from the reference value in the above height dimension of the molded frame Can be readjusted.

  Moreover, it is preferable that the fixed part is formed with a screw hole penetrating in the thickness direction.

  For example, when the adjustment portion is formed by step bending or the like, the area of the lower surface of the fixed portion varies according to the step width of the adjustment portion. If a screw hole is formed in this fixed part, it will move to the position of the screw hole due to a change in the step width of the adjustment part, so that the frame and other members to which the frame is fixed fit. Sexuality is impaired. On the other hand, since the adjustment part of the present invention is a step formed by half-punching, the fixed part can be moved up and down with respect to the base while maintaining the positional relationship between the screw hole and the other member. . Therefore, the adjustment part of this invention can adjust the level | step difference width of an adjustment part, without impairing the compatibility with the other member to which a frame is fixed.

  According to the motor device and the frame manufacturing method of the present invention, the dimensional error of the material used for the frame that supports the shaft that rotates by the driving force of the motor is flexibly absorbed, and the shaft and the shaft are combined. It is possible to increase the positional accuracy with respect to the member.

It is a perspective view which shows the external appearance of the motor apparatus concerning this embodiment. It is a side view of a motor apparatus. It is MM sectional drawing of the motor apparatus of FIG. It is NN sectional drawing of the motor apparatus of FIG. It is a perspective view which shows the external appearance of a flame | frame. It is a front view of a frame It is a side view which shows the example which readjusts the height dimension of a flame | frame. It is side view sectional drawing which shows the modification of a motor apparatus.

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

〔overall structure〕
FIG. 1 is a perspective view illustrating an appearance of a motor device 10 according to the present embodiment. FIG. 2 is a side view of the motor device 10. The motor device 10 mainly includes a motor 200 that is a drive source, a lead screw 300 that is a shaft that is rotated by the driving force of the motor 200, and a frame 400 that is a frame that supports the lead screw 300. The motor device 10 is incorporated into, for example, an optical pickup mechanism of an optical drive or a focus mechanism of a camera, and a nut member (not shown) corresponding to each mechanism is combined with the lead screw 300. Thereby, the motor apparatus 10 converts the rotational motion of the motor 200 into a linear motion.

[Motor configuration]
3 is a cross-sectional view of the motor device 10 shown in FIG. Hereinafter, the structure of the motor 200 will be described with reference to FIG.

  The motor 200 of this embodiment is a so-called PM type stepping motor. The motor 200 includes a rotor 220 composed of a lead screw 300 and a permanent magnet 221, and a stator 210 disposed opposite to the outer peripheral surface of the permanent magnet 221 with a predetermined air gap interposed therebetween.

  The motor 200 includes a two-phase stator 210 arranged side by side in the axial direction. Each stator 210 is disposed so that the bobbin 212 around which the drive coil 211 is wound, the outer yoke 213 that supports the bobbin 212 so as to cover the bobbin 212 from the outside, and the bobbin 212 sandwiched between the outer yoke 213 from the inside. The inner yoke 214 is used. The outer yoke 213 has a plurality of pole teeth 213a arranged at a predetermined pitch along the circumferential direction on the surface facing the permanent magnet 221. Similarly, the inner yoke 214 is also connected to the permanent magnet 221. The opposing surface has a plurality of pole teeth 214a arranged along the circumferential direction at the same pitch as the pole teeth 213a. The pole teeth 213a and the pole teeth 214a are alternately arranged in the circumferential direction. Further, the outer yoke 213 of this embodiment also serves as a case member of the motor 200.

  The permanent magnet 221 is a rare earth magnet such as a ferrite magnet having N poles and S poles alternately magnetized in the circumferential direction, or a neodymium magnet similarly magnetized. Permanent magnets 221 are arranged in the axial direction for each stator 210. Each permanent magnet 221 of this embodiment is formed in a cylindrical shape, and is bonded and fixed to the outer peripheral surface of the lead screw 300.

  In addition, the motor 200 attaches the lead screw 300 to the distal end side via the bearing 231 by the elastic force of the bearing 231 that supports the base end side (drive source side) of the lead screw 300 and the spring portion 241. A leaf spring 240 is provided as a biasing member for biasing. The bearing 231 and the leaf spring 240 are supported by a cap portion 232 coupled to the stator 210. The motor 200 and the motor attachment portion 422 are fixed to each other by means such as welding.

  The motor of the present invention is not limited to the motor 200, and other motors can be used on the condition that the driving force for rotating the shaft body can be output. Moreover, although the motor 200 of this embodiment is a direct drive motor that directly rotates the lead screw 300, the shaft body of the present invention may be separated from the motor. For example, the driving force of the motor may be reduced by a reduction gear train and transmitted to the shaft body.

[Configuration of lead screw]
The lead screw 300 is a rotating shaft formed of a metal such as stainless steel, aluminum, or brass. The lead screw 300 is housed in the motor 200 at the base end side, and protrudes from the motor 200 at the tip end side. A spiral groove is formed on the outer peripheral surface of the lead screw 300, and a nut member (not shown) is screwed into this. When power is supplied to the terminal 260 (see FIGS. 1 and 2) of the motor 200 and the motor 200 is driven, the nut member reciprocates along the lead screw 300 in a linear direction (extending direction of the lead screw 300). To do.

  FIG. 4 is an NN cross-sectional view of the motor device 10 of FIG. As shown in FIGS. 3 and 4, recesses 310 and 320 having a V-shaped cross section are formed at the proximal end and the distal end of the lead screw 300, and these recesses 310 and 320 are formed of steel balls 233 and 320, respectively. It is supported by bearings 231 and 423 via 424. More specifically, the concave portion 310 formed at the distal end portion of the lead screw 300 is supported by the bearing 423 via the steel ball 424, and the concave portion 320 formed at the proximal end portion of the lead screw 300 is made of steel. It is supported by a bearing 231 via a ball 233.

[Frame structure]
FIG. 5 is a perspective view showing the appearance of the frame 400. In the following description, the “axial direction” refers to the axial direction of the lead screw 300 supported by the frame 400, and refers to a direction parallel to the X-axis direction of the coordinate axis display shown in FIG. Similarly, "axial tip side" refers to a direction toward the distal end side of the lead screw 300, it refers to the X ₁ direction in the coordinate axis display. The "axial direction base end side" refers to a direction toward the base end side of the lead screw 300, it refers to the X ₂ direction in the coordinate axis display. The “plate width” refers to the length of the frame 400 in the Y-axis direction of the same coordinate axis display, and the “upper”, “lower”, and “height” refer to the vertical direction in the Z-axis direction of the same coordinate axis display. The direction.

  The frame 400 is formed of a single sheet metal material. The frame 400 mainly includes a base portion 410, a shaft support portion 420, and a fixed portion 430. The base portion 410 is a flat plate portion that is disposed with one plate surface facing the lead screw 300 side. The shaft support portion 420 is an upright portion that is bent upward from the base portion 410 and supports the lead screw 300 in parallel with the base portion 410. The fixed portion 430 is a flat plate portion that extends from a part of the side surface of the base portion 410 to the outside in the planar direction of the base portion 410.

(base)
The base portion 410 is a substantially rectangular flat plate portion having both sides extending in the axial direction as long sides. The end of the base portion 410 on the front end side in the axial direction is formed to have a plate width that is slightly larger than the diameter of the lead screw 300, and the vicinity of the end portion gradually increases in width toward the end portion. It is formed to be smaller. The plate width of the other part of the base 410 is formed to be approximately the same as the diameter of the motor 200.

(Shaft support)
The shaft support portions 420 of the present embodiment are provided at both ends of the base portion 410 in the axial direction. The shaft support portion 420 includes a shaft tip support portion 421 provided on the distal end side in the axial direction of the base portion 410 and a motor mounting portion 422 provided on the proximal side in the axial direction. The shaft tip support portion 421 and the motor mounting portion 422 are formed in a semicircular shape when viewed from the axial direction.

  Since the shaft tip support portion 421 and the motor attachment portion 422 are portions that are continuously bent from the end portion of the base portion 410, the plate widths thereof are different from each other. That is, the plate width of the shaft support portion 421 is formed to be slightly larger than the diameter of the lead screw 300, and the plate width of the shaft support portion 422 is formed to be approximately the same as the diameter of the motor 200. Yes. The shaft tip support portion 421 and the motor mounting portion 422 are formed with holes 421a and 422a penetrating in the thickness direction, respectively. The radial centers of the holes 421a and 422a coincide with each other in the vertical direction and the plate width direction, and the lead screw 300 is inserted into the holes 421a and 422a and supported by the shaft support 420. Thus, the shaft support portion 420 supports the lead screw 300 at a constant distance from the base portion 410 in parallel with the base portion 410. Note that the shaft body of the present invention does not always need to be arranged in parallel with the base, and may be arranged at an angle slightly inclined with respect to the base.

  In the motor device 10 of this embodiment, since the motor 200 is a direct drive motor, the base end portion of the lead screw 300 is accommodated in the motor 200. Therefore, although the motor mounting portion 422 supports the base end portion of the lead screw 300 together with the motor 200, for example, the motor and the shaft body are separated, and the motor mounting portion 422 directly connects the base end portion of the lead screw 300. It is good also as a structure to support.

  In addition, the shaft support portion 420 of this embodiment is formed integrally with the base portion 410 and the fixed portion 430 from a single sheet metal material, but the shaft support portion 420 fixes the lead screw 300 along the base portion 410. It may be a separate member coupled to the base 410 directly or via another member as long as it can be supported at a distance.

(Fixed part)
The fixed portion 430 is a substantially rectangular flat plate portion that fixes the frame 400 to another member B. The fixed portions 430 of the present embodiment extend from the both side surfaces of the base portion 410 in the plate width direction to the outside in the plate width direction by two. Each fixed portion 430 is formed with a screw hole 432 penetrating in the thickness direction at the center thereof. In addition, an adjustment portion 431 that is a step with respect to the base portion 410 formed by half punching is provided at the base end portion of each fixed portion 430.

  The frame 400 of this embodiment is made of a single sheet metal material. As a result, the number of parts constituting the frame 400 and its assembly tolerance are suppressed, and the positioning accuracy of the lead screw 300 by the frame 400 is enhanced. On the other hand, in the sheet metal material, there is a slight error (difference) in the thickness dimension of the sheet between individuals. Even in this case, the shaft support portion 420 can support the lead screw 300 at a constant distance from the base portion 410 in parallel to the base portion 410 without being influenced by the thickness error of the sheet metal material. However, since the height dimension from the lower surface of the fixed portion 430 to the lead screw 300 varies due to an error (difference) in the thickness dimension of the sheet metal material, the error may impair the positioning accuracy of the lead screw 300 in the height direction. is there.

  FIG. 6 is a front view of the frame 400 as viewed from the shaft tip support portion 421 side. As shown in FIG. 6, the fixed portion 430 of the frame 400 has an adjustment portion 431, so that the position in the vertical direction can be changed. This means that the thickness error of the sheet metal material can be absorbed by adjusting the step width of the adjusting portion 431 according to the actual size of the sheet metal material.

  As described above, in the motor device 10 according to the present embodiment, the adjustment portion 431 is provided in the fixed portion 430 of the frame 400, and the lead screw 300 is supported by the frame 400. The height dimension from the lower surface to the lead screw 300 can be kept constant. Thereby, disturbance of the operation accuracy of the lead screw 300 and the nut member is suppressed. Furthermore, since the adjustment of the half-punch amount of the mold is easier than in the case of other processing methods such as bending, the motor device 10 of the present embodiment suppresses the influence on the production efficiency while suppressing the influence of the sheet metal material. It is possible to flexibly cope with the thickness error.

  Further, when the adjustment portion is formed by, for example, step bending, the area of the lower surface of the fixed portion varies according to the step width of the adjustment portion. If a screw hole is formed in this fixed part, it will move to the position of the screw hole due to a change in the step width of the adjustment part, so that the frame and other members to which the frame is fixed fit. Sexuality is impaired. On the other hand, since the adjustment portion 431 of the present embodiment is a step formed by half-punching processing, the fixed portion 430 is relative to the base portion 410 while maintaining the positional relationship between the screw hole 432 and the other member B. Can be moved up and down. Thereby, the adjustment part 431 of this embodiment can adjust the level | step difference width of the adjustment part 431, without impairing compatibility with the other member B to which the flame | frame 400 is fixed.

  Further, since the frame 400 is made of a single sheet metal material, the thickness of the fixed portion 430 is the same as the thickness of the base portion 410. And the to-be-fixed part 430 of this embodiment is pushed down below the level | step difference width of the adjustment part 431 by the half punching process. Therefore, the lower surface of the fixed portion 430 protrudes downward from the lower surface of the base portion 410. As a result, when the frame 400 is screwed to the other member B, only the lower surface of the fixed portion 430 comes into contact with the other member B. For example, when the lower surface of the base 410 of the frame 400 is in contact with another member B, the surface accuracy of the contact surface between the base 410 and the other member B may affect the position of the lead screw 300. In the present embodiment, such an influence is minimized by adopting a configuration in which only the lower surface of the fixed portion 430 is brought into contact with the other member B.

[Modification]
FIG. 8 is a side sectional view of a motor device 11 which is a modification of the motor device 10. In the following description, components having the same or similar functions as those of the previous embodiment are denoted by the same reference numerals as those of the previous embodiment, and detailed description thereof is omitted.

  A worm gear 350 that is a shaft body of the motor device 11 includes a cylindrical rotating cylinder portion 351 that is rotated by the driving force of the motor 201 that is a driving source, and a support shaft portion 352 that is inserted into the cylinder of the rotating cylinder portion 351. It is configured. The driving force of the motor 201 is decelerated by a reduction gear train (not shown) disposed in the gear box 500 and transmitted to the rotary cylinder portion 351. The shaft support portion 420 of the frame 400 supports the support shaft portion 352 of the worm gear 350. In this modification as well, since the base end portion of the support shaft portion 352 is accommodated in the motor 201, the motor mounting portion 422 supports the base end portion of the support shaft portion 352 together with the gear box 500 and the motor 201. doing.

  In this modification, the support shaft portion 352 is inserted into the cylinder of the rotating cylinder portion 351, and the rotation cylinder portion 351 is supported by the support shaft portion 352 over its entire length, so that the inclination and deflection of the worm gear 350 are suppressed. ing. Thereby, the operation accuracy of the worm gear 350 and a worm wheel (not shown) combined with the worm gear 350 is improved.

[Frame manufacturing method]
FIG. 7 is a side view showing the process of readjusting the height dimension of the frame 400 of this embodiment. As shown in FIG. 7A, there is an error between the height D of the molded frame 400 from the lower surface 430a of the fixed portion 430 to the support position A of the lead screw 300 and a predetermined reference value R. In this case, the step width of the adjusting unit 431 is adjusted by finely correcting the half-punch amount of the mold. Then, as shown in FIG. 7B, the fine correction of the mold is repeated until the height dimension D coincides with the predetermined reference value R. In this way, the adjustment of the half-punch amount of the mold is easier than in the case of other processing methods such as bending, so even when the height D of the molded product has an error from the reference value R. It is possible to deal flexibly while suppressing the impact on production efficiency.

  In the example of FIG. 7, the adjustment amount of the adjustment unit 431 is measured from the error between the height dimension D of the frame 400 after molding and the reference value R, but naturally the thickness error of the sheet metal material is measured in advance, The half-punch amount of the mold may be set so as to coincide with the reference value R.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

10, 11 Motor device 200, 201 Motor 300 Lead screw (shaft body)
350 Worm gear (shaft body)
351 Rotating cylinder 352 Support shaft 400 Frame (frame)
410 Base 420 Shaft support portion 421 Shaft support portion 422 Motor mounting portion 430 Fixed portion 430a Lower surface (contact surface with other members)
431 Adjustment unit 432 Screw hole A Shaft body support position B Other member D Distance from the bottom surface of the fixed part to the shaft body support position R Predetermined reference value

Claims (9)

A motor as a drive source;
A shaft that rotates by the driving force of the motor;
A frame that supports the shaft body,
The frame has a base, a shaft support, and a fixed part,
The base portion is disposed along the axial direction of the shaft body supported by the shaft support portion,
The fixed part is a part that extends from the base and fixes the frame to another member;
The motor device according to claim 1, wherein the fixed portion is provided with an adjustment portion that is a step with respect to the base portion formed by half punching. The base portion is a flat plate portion disposed with its one plate surface facing the shaft body side,
The shaft support portion supports the shaft body in parallel with the base portion,
The motor device according to claim 1, wherein the fixed portion is a flat plate portion that extends from a part of a side surface of the base portion to the outside in the planar direction of the base portion.   The motor device according to claim 1, wherein a screw hole penetrating in the height direction of the step is formed in the fixed portion. The frame is made of a single sheet metal material,
The motor device according to any one of claims 1 to 3, wherein the shaft support portion is an upright portion that is bent from the base portion toward the shaft body.   5. The motor device according to claim 1, wherein only the fixed portion of the frame body is in contact with the other member. The shaft body has a cylindrical rotating cylinder portion that is rotated by the driving force of the motor, and a support shaft portion that is inserted into the cylinder of the rotating cylinder portion,
A spiral groove is formed on the outer peripheral surface of the rotating cylinder portion,
The motor device according to any one of claims 1 to 5, wherein the shaft support portion supports the support shaft portion. A manufacturing method of a frame body that supports a shaft body,
The frame is made of a single sheet metal material,
The frame has a base, a shaft support, and a fixed part,
The base is a flat plate portion arranged with its one plate surface facing the shaft body side,
The shaft support portion is an upright portion that is bent from the base portion toward the shaft body and supports the shaft body along the base portion.
The fixed portion is a flat plate portion that extends from a part of the side surface of the base portion to the outside in the planar direction of the base portion, and fixes the frame body to another member.
Adjusting the half-punch amount of the adjusting portion so that a height dimension from a contact surface of the fixed portion with the other member to a support position of the shaft body matches a predetermined reference value. The manufacturing method of the frame characterized by these.   If there is an error in the height dimension from the contact surface of the fixed part with the other member to the support position of the shaft body and a predetermined reference value, the half extraction amount of the adjustment part is readjusted. The method for manufacturing a frame according to claim 7, further comprising a step.   The manufacturing method of the frame according to claim 6 or 8, wherein a screw hole penetrating in the thickness direction is formed in the fixed portion.

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