JP3105614U - Guide structure of optical axis stepping motor - Google Patents

Abstract

SOLUTION: It is composed of an outer shell, a fixed seat, a stator set, a rotor set and a telescopic shaft tube. The fixed seat includes a fixed cover plate, and the fixed seat and the fixed cover plate are used together to fix the shell and the stator set. The stepper motor is formed by fitting the stator set, the rotor set, and the telescopic shaft tube together. The fixed seat further includes a pair of guide rods. The guide rod is formed in the telescopic shaft tube, and is fixed between the fixed seat and the fixed lid plate, so that the guide rod is extended by the guide rod. It is configured such that movement in the direction can be accurately guided.
[Effect] By applying a pair of guide rods to a stepping motor and assembling and fixing the guide rods using a fixed seat, the rotation of the telescopic shaft tube by the guide rods can be guided. Therefore, the overall structure of the stepping motor can be simplified, and the assembling work can be more convenient.
[Selection diagram] Figure 2

Description

  The present invention relates to a guide structure of an optical axis stepping motor. In particular, the stepper motor is provided with a fixed seat, a fixed seat is provided with a pair of guide rods, and the telescopic shaft tube is fixed and guided by the guide rod. The present invention relates to an optical axis stepping motor guiding structure.

As a structure of a conventional stepping motor, a stepping motor and a lens seat are disclosed. The stepping motor includes an annular coil stator and a magnet ring rotor. A pair of pressing rings are formed on the lens seat, and the pressing rings are installed so as to correspond to the magnet ring rotor of the stepping motor, and limit the axial movement of the magnet ring rotor by the pressing rings. (See, for example, Patent Document 1).
Republic of China Notice No. 556851

  In the structure of the conventional stepping motor as described above, a pair of pressing rings or other positioning members are provided on the lens seat, and the movement of the magnet ring rotor in the axial direction is restricted by the pressing rings. However, there is a problem that the structure is complicated and assembly is difficult. In addition, a fitting member must be provided on the lens seat, and the fitting member is provided with a plurality of guiding members for accurately guiding the movement of the sleeve in the axial direction. In other words, by further improving the conventional stepping motor and lens seat as described above, the range of movement of the rotor in the axial direction can be accurately restricted, the overall structure can be simplified, and the assembling work can be made more convenient. be able to.

  The present invention was devised in view of such a problem, and its purpose is to apply a pair of guiding rods to a stepping motor and assemble and fix the guiding rods using a fixed seat. By doing so, it is possible to guide the rotation of the telescopic shaft tube by the guiding rod, so that the entire structure of the stepping motor can be simplified, and the assembling work can be more convenient. It is intended to provide a guiding structure.

  A first object of the present invention is to provide a pair of guide rods on a fixed seat and to fix and guide the telescopic shaft tube by the guide rods, thereby simplifying the entire structure of the stepping motor and further assembling. The purpose of the present invention is to provide a guide structure for an optical axis stepping motor that can make the above operation convenient.

  The second object of the present invention is to improve the quality of the stepping motor by using a pair of guiding rods, which can fix and guide the movement of the telescopic shaft in the axial direction by the guiding rods. An object of the present invention is to provide a guide structure for an optical axis stepping motor.

  The third object of the present invention is to use a pair of guiding rods, and the guiding rods are formed so as to directly drill the telescopic shaft tube, so that the space inside the stepping motor can be omitted. Another object of the present invention is to provide a guide structure for an optical axis stepping motor that can increase the volume of the stepping motor.

To achieve the above object, the guiding structure of the optical axis stepping motor according to the present invention is as follows. That is,
It is composed of a fixed seat, a stator set, a rotor set and a telescopic shaft tube. The fixed seat is provided with at least one guide rod. A pole ring and a coil are formed in the stator set. An annular magnet is formed in the rotor set, and the rotor set is fitted inside the stator set. The telescopic shaft tube is fitted into the rotor assembly to form a combined unit, and the telescopic shaft tube can perform relative expansion and contraction operations. The telescopic shaft tube has at least one guide through hole. Is formed, and the guide through hole is used to receive the guide rod of the fixed seat. By restricting and guiding the guiding through hole of the telescopic shaft tube by the guiding rod of the fixed seat, the telescopic shaft tube can smoothly move in the axial direction.

  The guide structure of the optical axis stepping motor according to the present invention may further include an outer shell, which may be used for fitting to a combination of a stator assembly, a rotor assembly and a telescopic shaft tube. . Further, the fixing seat is provided with at least one positioning hole, and the positioning hole can be used to fix the guiding rod. In addition, the fixed seat may include a fixed lid plate. Further, the outer shell can be fixed between the fixed seat and the fixed lid plate. Further, at least one positioning hole is provided in the fixed lid plate, and the positioning hole can be used for fixing the guiding rod. Further, a plurality of assembly holes are provided in the fixed seat, a plurality of assembly columns are provided in the stator set, and the assembly columns of the stator set can be fitted into the assembly holes of the fixed seat. Also, a plurality of assembly holes may be provided in the fixed cover plate, a plurality of assembly columns may be provided in the stator set, and the assembly columns of the stator set may be fitted into the assembly holes of the fixed cover plate.

  According to the guide structure of the optical axis stepping motor of the present invention, since a pair of guide rods is provided on the fixed seat, and the telescopic shaft tube can be fixed and guided by the guide rods, the entire structure of the stepping motor is provided. And the assembly work can be made more convenient.

  According to the guiding structure of the optical axis stepping motor of the present invention, a pair of guiding rods can be used to fix and guide the axial movement of the telescopic shaft tube by the guiding rods. There is an advantage that the quality can be improved.

  According to the guiding structure of the optical axis stepping motor of the present invention, a pair of guiding rods is used, and the guiding rods are formed so as to directly drill the telescopic shaft tube, so that the space inside the stepping motor is formed. Therefore, there is an advantage that the volume of the stepping motor can be increased.

  An embodiment of the present invention will be described below with reference to the drawings.

  Referring to FIGS. 1, 2, and 3, the guide structure of the optical axis stepping motor according to the embodiment of the present invention includes an outer shell 1, a fixed seat 10, a stator set 20, a rotor set 30, and a telescopic shaft tube 40. . The stepping motor is formed by fitting the stator set 20, the rotor set 30, and the telescopic shaft tube 40 in order to form a combined unit. The units of the above combination are housed inside the outer shell 1. Alternatively, the telescopic shaft tube 40 is formed in a telescopic mechanism, and relative extension and contraction can be performed by rotation of a stepping motor.

  Referring again to FIG. 1, the outer shell 1 structurally belongs to a cylindrical body and is used to protect members of the motor. The outer shell 1 is formed to have sufficient strength to support the operation of the stepping motor and its expansion and contraction mechanism.

  Referring again to FIGS. 1 and 2, structurally, the fixed seat 10 includes a fixed lid plate 10 '. The fixed seat 10 is provided with a plurality of positioning holes 11 and a plurality of assembly holes 12, while the fixed cover plate 10 'is provided with a plurality of positioning holes 11' and a plurality of assembly holes 12 '. The plurality of positioning holes 11 'and the plurality of assembly holes 12' are formed so as to correspond to the plurality of positioning holes 11 and the plurality of assembly holes 12 of the fixed seat 10. A plurality of guide rods 110 are provided on the fixed seat 10, and both ends of the guide rod 110 are fitted into positioning holes 11 of the fixed seat 10 and positioning holes 11 ′ of the fixed lid plate 10 ′.

  Referring again to FIGS. 1 and 2, structurally, the stator set 20 is composed of one pole ring (not shown) and one coil set (not shown), and the magnetic energy of the coil set is generated by the pole ring. Since an alternating magnetic field can be generated, the rotor set 30 can be driven to rotate. In addition, a plurality of assembly columns 21 are provided on the stator set 20 so as to protrude. In terms of spatial arrangement, the assembly columns 21 are respectively arranged on both sides of the stator set 20. At the time of assembling, the assembling hole 12 of the fixed seat 10 and the assembling hole 12 'of the fixed lid plate 10' can be assembled by the assembling column 21. The set 20 can be fixed.

  Referring again to FIGS. 1 and 2, an annular magnet 31 is formed on the outer periphery of the rotor set 30 in terms of the structure, and the annular magnet 31 is composed of a plurality of magnetic poles of permanent magnets. Therefore, the rotation of the rotor set 30 by the stator set 20 can be excited and driven.

  Referring again to FIGS. 1 and 2, the telescopic shaft tube 40 is provided with one lens set 41 and a plurality of guiding through holes 400 in terms of structure. Since the guide through hole 400 is formed so as to directly penetrate both ends of the main body of the telescopic shaft tube 40, it does not occupy an extra arrangement space. The lens set 41 is assembled at one end of the telescopic shaft tube 40, and the guide through hole 400 is used to accommodate the guide rod 110 of the fixed seat 10. The telescopic shaft tube 40 is screwed and fitted inside the rotor set 30, so that the stator set 20, the rotor set 30 and the telescopic shaft tube 40 can be fitted together to form a stepping motor.

  Referring again to FIG. 2, the guide rod 110 of the fixed seat 10 is formed in the guide through hole 400 of the telescopic shaft tube 40 and is fixed between the fixed seat 10 and the fixed cover plate 10 ′. Since the telescopic shaft tube 40 must be moved in the axial direction along the guiding rod 110, the moving of the telescopic shaft tube 40 in the axial direction can be accurately guided by the guiding rod 110.

  Referring to FIG. 3, when the rotor set 30 performs the rotation operation inside the outer shell 1, the inner screw of the rotor set 30 abuts against and presses the outer screw of the telescopic shaft tube 40, thereby causing the telescopic shaft tube to be pressed. 40 can be driven to effect axial movement, i.e., telescopic shaft tube 40 can move forward and backward along the axial direction.

  Referring again to FIG. 3, when the telescopic shaft tube 40 moves in the axial direction, the guide rod 110 of the fixed seat 10 can position and guide the telescopic shaft tube 40. 40 can smoothly move in the axial direction. As described above, since the axial movement of the telescopic shaft tube 40 can be enhanced by the guiding rod 110 of the fixed seat 10, the quality of the stepping motor can be improved.

  As described above, according to the structure of the conventional stepping motor, a pair of pressing rings or other positioning members are installed inside the lens seat, and the pressing rings restrict the movement of the magnet ring rotor in the axial direction. However, there is a problem that the structure is complicated and assembly is difficult. On the other hand, according to the guide structure of the optical axis stepping motor of the embodiment of the present invention, the extension shaft tube 40 can be restricted by the guide rod 110 of the fixed seat 10, so that the quality of the stepping motor can be improved. Can be. Further, by directly piercing the guide through hole 400 of the telescopic shaft tube 40 with the guide rod 110 of the fixed seat 10, the space inside the stepping motor can be omitted, so that the volume of the stepping motor can be reduced. it can.

  The present invention may be embodied in other ways without departing from its spirit and essential characteristics. Accordingly, the preferred embodiments described herein are illustrative and not limiting.

FIG. 3 is an exploded perspective view of the optical axis stepping motor according to the embodiment of the present invention, which is drawn by a guiding structure. FIG. 3 is a cross-sectional view of the optical axis stepping motor according to the embodiment of the present invention, which is assembled by the guiding structure. FIG. 5 is an explanatory view of the operation of the optical axis stepping motor according to the embodiment of the present invention by the guiding structure.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Outer shell 10 Fixed seat 11 Positioning hole 12 Assembly hole 110 Guide rod 10 'Fixed lid plate 11' Positioning hole 12 'Assembly hole 20 Stator set 21 Assembly column 30 Rotor set 31 Annular magnet 40 Telescopic shaft pipe 400 Guide penetration Hole 41 Lens set

Claims (8)

  A guide structure for an optical axis stepping motor comprising a fixed seat (10), a stator set (20), a rotor set (30) and a telescopic shaft tube (40), wherein the fixed seat (10) has at least one A guide rod (110) is provided, a magnetic pole ring and a coil are formed in the stator set (20), an annular magnet (31) is formed in the rotor set (30), and the rotor set (30) is formed by the stator set ( The telescopic shaft tube (40) is fitted inside the rotor assembly (30) to form a combined unit, and the relative expansion and contraction operation is performed by the telescopic shaft tube (40). At least one guide through hole (400) is formed in the telescopic shaft tube (40), and the guide through hole (400) accommodates the guide rod (110) of the fixed seat (10). Used to guide the fixed seat (10) By restricting and guiding the guiding through hole (400) of the telescopic shaft tube (40) by (110), the telescopic shaft tube (40) can smoothly move in the axial direction. Guide structure of the optical axis stepping motor.   In addition, an outer shell (1) is included, and the outer shell (1) is used for fitting to a unit of a combination of a stator set (20), a rotor set (30) and a telescopic shaft tube (40). The guiding structure for an optical axis stepping motor according to claim 1, wherein:   2. The optical axis according to claim 1, wherein the fixing seat has at least one positioning hole, and the positioning hole is used for fixing the guide rod. Guide structure of stepping motor.   4. The guide structure for an optical axis stepping motor according to claim 3, wherein the fixed seat (10) further includes a fixed lid plate (10 ').   The guiding structure of an optical axis stepping motor according to claim 4, wherein the outer shell (1) is fixed between the fixed seat (10) and the fixed lid plate (10 ').   5. The fixed lid plate (10 ') is provided with at least one positioning hole (11'), wherein the positioning hole (11 ') is used for fixing the guiding rod (110). An optical axis stepping motor according to the above description.   A plurality of assembly holes (12) are provided in the fixed seat (10), a plurality of assembly columns (21) are provided in the stator set (20), and the assembly columns (21) of the stator set (20) are 2. A guide structure for an optical axis stepping motor according to claim 1, wherein the guide hole is fitted into an assembly hole of the fixing seat. A plurality of assembly holes (12 ') are provided in the fixed lid plate (10'), a plurality of assembly columns (21) are provided in the stator set (20), and the assembly columns (21) of the stator set (20) are provided. 5. The guide structure for an optical axis stepping motor according to claim 4, wherein said 21) is fitted into an assembly hole (12 ') of said fixed cover plate (10').

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