CN105739045A - Combination structure of lens barrel and lens holder - Google Patents

Abstract

A combined structure of a lens barrel and a lens holder, suitable for an optical lens of a mobile phone, comprises a lens barrel and a lens holder, the lens barrel having a cylindrical wall and at least one protrusion, the protrusion radially protruding from the cylindrical wall, the lens holder having a circular hole wall and at least one spiral guide rail, a receiving space formed in the circular hole wall, the receiving space having an entrance for the lens barrel to be placed therein, the spiral guide rail being axially formed on a radial annular end surface at the entrance of the lens holder; the lens barrel is axially mounted in the receiving space, the protrusion will keep in contact with the spiral guide rail, and when the lens barrel is rotated, the protrusion slides along the spiral guide rail to adjust the axial position of the lens barrel relative to the lens holder.

Description

Combination structure of lens barrel and lens holder

technical field

The invention belongs to the technical field of optical lenses, in particular to a combined structure of a lens barrel and a lens base suitable for thin portable electronic products, which facilitates the production and manufacture of the lens barrel and the lens base.

Background technique

The thinning of portable electronic products is the current design trend, such thin portable electronic products such as smart phones, tablet computers and so on. This product usually has an optical lens for photography or photography. The combined structure of the lens barrel and the lens holder in the optical lens is shown in Figure 1. The outer wall of the lens barrel 1 has an external thread 11, and the inner hole wall of the mirror holder 2 It has an internal thread 21, and both the lens barrel 1 and the lens base 2 are assembled and adjusted by using a thread structure. The lens barrel 1 and the lens base 2 are basically prototyped by plastic injection molding, in which the internal thread must rely on the reaming device to rotate and retreat to complete the forming operation of the thread; the external thread is almost the same. In today's thinning trend of electronic products, the size of the lens barrel and the lens base are reduced simultaneously, and the manufacturing accuracy is also more sensitive. The processing accuracy of the thread and the assembly of the injection and retreating teeth are likely to affect the coaxiality of the components, the control of the inner and outer diameters, etc., which is not conducive to the production of high-end products.

Contents of the invention

The main purpose of the present invention is to provide a lens barrel and a lens holder without screw teeth, and the lens barrel and the lens barrel can still be adjusted axially after being assembled.

In order to achieve the above-mentioned purpose, the present invention includes a lens barrel and a lens base, the lens barrel has a cylindrical wall and at least one protrusion, and the protrusion protrudes radially from the cylindrical wall; the mirror base has a A circular hole wall, forming an accommodating space in the circular hole wall, the accommodating space has an entrance for the lens barrel to be placed in, and the spiral guide rail is formed on the radial annular end surface of the entrance of the mirror holder in the axial direction; The lens barrel is axially installed in the accommodating space, and the projection will keep in contact with the spiral guide rail. When the lens barrel is rotated, the projection slides along the spiral guide rail to adjust the lens barrel relative to the Axial position of mirror mount.

Moreover, another embodiment of the present invention includes a lens barrel and a lens base, the lens barrel has a cylindrical wall and at least one protrusion, and the protrusion protrudes radially from the cylindrical wall; the mirror base It has a circular hole wall and at least one spiral guide rail, forming an accommodating space in the circular hole wall, and the accommodating space has an entrance for the lens barrel to be placed in, and the spiral guide rail is radially retracted into the circular hole wall, It is located at the entrance of the wall of the circular hole, and the area of the spiral guide rail axially covering the inner circumference of the wall of the circular hole does not overlap; the lens barrel is axially installed in the accommodating space, and the projection It will keep in contact with the spiral guide rail, and when the lens barrel is rotated, the protrusion slides along the spiral guide rail to adjust the axial position of the lens barrel relative to the mirror base.

Furthermore, another embodiment of the present invention includes a lens barrel and a lens holder, the lens barrel has a cylindrical wall and at least one helical guide rail, the helical guide rail radially protrudes from the cylindrical wall, and the helical The area of the guide rail axially covering the outer circumference of the cylinder wall does not overlap; the mirror base has a circular hole wall and at least one protrusion, and a housing space is formed in the circular hole wall, and the housing space has a The entrance is for the lens barrel to be put into, the protrusion is located on the radial end face of the mirror seat at the entrance, and protrudes from the radial end face in the axial direction; the lens barrel is installed in the accommodating space in the axial direction, The spiral guide rail keeps in contact with the protrusion, and when the lens barrel is rotated, the spiral guide rail changes the contact position with the protrusion by sliding to adjust the axial position of the lens barrel relative to the mirror seat.

The technical means of the present invention is to use the projection of one of the components of the lens barrel and the lens base to cooperate with the spiral guide of the other component. The lens barrel is used to adjust its axial position on the lens holder. The above-mentioned embodiments are all designed on this basis, and the principles adopted are exactly the same.

In the present invention, the number of the protrusions is the same as the number of the spiral guide rails, and each protrusion bears against the corresponding spiral guide rails in the combined structure. When there are multiple bumps, the number of spiral guide rails must be less than or equal to the number of bumps.

In the present invention, when the lens barrel is adjusted to the axial position of the lens holder, the protrusion and the spiral guide rail must keep in constant contact state, and the contact state can be one of point contact, line contact or surface contact, Therefore, the shape of the bump can be a bump, a cylinder, a cuboid or a special shape, but not limited to these shapes; the radial surface of the guide rail of the spiral guide can be a plane, a curved surface, or an inclined surface, but not limited to these shapes.

The implementation of this creation is described in more detail below in conjunction with the drawings and component symbols, so that those who are familiar with the art can implement it after studying this manual.

Description of drawings

Figure 1 is a schematic diagram of a conventional lens barrel and lens holder;

2 is a schematic diagram of the lens barrel and the lens base of the first embodiment of the present invention;

3A is a schematic diagram of another embodiment of the lens barrel of the first embodiment of the present invention;

3B is a schematic diagram of another embodiment of the lens barrel of the first embodiment of the present invention;

4 is a schematic diagram of a lens barrel and a lens base according to a second embodiment of the present invention;

5 is a schematic diagram of a lens barrel and a lens base according to a third embodiment of the present invention;

Fig. 6 is a schematic diagram of a lens barrel and a lens base of a fourth embodiment of the present invention;

Fig. 7 is a schematic diagram of a lens barrel and a lens base of a fifth embodiment of the present invention;

FIG. 8 is a schematic diagram of a lens barrel and a lens base according to a sixth embodiment of the present invention.

Explanation of reference signs:

Lens barrel 1 external thread 11

Mirror holder 2 internal thread 21

lens barrel 3

barrel wall 31

Bump 32

Lens barrel top surface 33

hole 331

Card slot 34

mirror mount 4

Hole wall 41

Accommodating space 42

Entrance 421

Spiral guide 43

Bump 32A

Bump 32B

Mirror mount 4A

Spiral guide 43A

Lens barrel 5

Cylindrical wall 51

Spiral guide 52

mirror mount 6

Hole wall 61

Accommodating space 62

Entrance 621

Radial end face 63

Bump 64

detailed description

As shown in FIG. 2 , it is a schematic view of the lens barrel and the lens base of the present invention. The lens barrel 3 has a cylindrical wall 31 and at least one protrusion 32 , and the protrusion 32 radially protrudes from the cylindrical wall 31 . The lens barrel top surface 33 of this lens barrel 3 has a hole 331, and at least one lens is installed inside, and this hole 331 allows light to enter in the lens barrel 3, and this part is similar to conventional ones, so it will not be described in detail. The protrusion 32 is adjacent to the top surface 33 of the lens barrel. The circumference of the lens barrel top surface 33 and the cylindrical wall 31 is connected to form a concave number card slot 34. This card slot 34 is convenient to use a tool to be locked in the groove, so as to facilitate the rotation of the lens barrel 3 during adjustment. .

The mirror base 4 has a circular hole wall 41 and at least one spiral guide rail 43. A housing space 42 is formed in the circular hole wall 41. The housing space 42 has an entrance 421 for the lens barrel 3 to pass through. Inserted into the accommodating space 42 , the spiral guide rail 43 is axially formed on the radial annular end surface of the inlet 421 of the mirror base 4 , that is, the horizontal position of the spiral guide rail 43 decreases sequentially along the axial direction. In this way, the lens barrel 3 and the lens base 4 have no threads, and both can be directly injection-molded without secondary processing. Therefore, the dimensional accuracy of the lens barrel 3 and the lens base 4 can be effectively controlled.

Assembly method: the lens barrel 3 is axially inserted into the accommodating space 42 through the inlet 421 , and then the protrusion 32 keeps in contact with the spiral guide rail 43 , so that the lens barrel 3 cannot be axially inserted into the lens holder 4 temporarily. move. But this type of optical lens must carry out the fine-tuning of focal length before component is fixed, and this moment can utilize tool this lens barrel 3 to rotate, and this projection 32 slides along this spiral guide rail 43, adjusts this lens barrel 3 relative to this lens holder 4 axial positions to achieve the purpose of fine-tuning the focal length. After adjustment, fix the position of the lens barrel 3 on the lens base 4 with glue.

In the present invention, the convex block 32 is leaned against the spiral guide rail 43 , and the two continue to maintain a contact state, and the lens barrel 3 is rotated to achieve the axial adjustment of the lens barrel 3 and the lens holder 4 . Therefore, the contact state of the bump 32 and the spiral guide rail 43 can be at least one of point contact, line contact or surface contact, etc., so that the bump 32 and the spiral guide rail 43 can be in many different shapes, and the present invention makes several of them. Description, but not limited to the shape described. As shown in FIG. 2 , the protrusion 32 is a rectangular shape, and the radial surface of the spiral guide 43 is a plane. As shown in FIG. 3A , the bumps 32A are spherical bumps. As shown in FIG. 3B , the protrusion 32B is a long guide block, and the spiral shape of the long guide block is matched with the spiral guide rail 43 . In addition, the shape of the protrusion can be a cylinder or a special shape, etc.; the radial surface of the guide rail of the spiral guide 43 can also be a curved surface or an inclined surface.

In the present invention, the number of protrusions 32 of the lens barrel 3 is the same as the number of the spiral guide rail 43 of the mirror base 4. In the embodiment of FIG. This is the limit. As shown in FIG. 4 , which is a schematic view of the second embodiment of the present invention, the lens barrel 3 has two protrusions 32 , and the mirror base 4 also has two spiral guide rails 43 oppositely. In a preferred embodiment, the number of protrusions 32 is distributed on the cylindrical wall 31 at equal intervals, and the number of spiral guide rails 43 is also equiangularly distributed on the radial annular end surface of the mirror base 4, and the spiral guide rail 43 The number is equal to the number of the bumps 32 . In principle, at least one protrusion is supported against the corresponding spiral guide rail in the combined structure. If there are multiple protrusions, the number of the spiral guide rails must be less than or equal to the number of protrusions.

As shown in FIG. 5 , it is a schematic diagram of the third embodiment of the present invention. In this embodiment, the shape of the lens barrel 3 is the same as that of the embodiment in FIG. 2 , and the structure of the mirror base 4A has some changes, mainly the position of the spiral guide rail 43A. In this embodiment, the spiral guide rail 43A is radially retracted into the circular hole wall 41, and is located at the entrance 421 of the circular hole wall 41, and the spiral guide rail 43A covers the circular hole wall 41 in the axial direction. The areas of the circumference do not overlap. Among the figure, the area of the helical guide rail 43A covering the circumference of the circular hole wall 41 in the axial direction is equal to the circumference, so the length of the guide rail from the starting point to the end point of the guide rail 43A will be greater than a circumference length of the circular hole wall 41, but it is not limited by As a limitation, the spiral guide rail 43A can also only form a partial area of the circular hole wall 41, and the key point of this design depends on the distance to be adjusted in the axial direction.

As shown in Figure 6, it is a schematic view of the fourth embodiment of the present invention. This embodiment is an improvement made according to the embodiment in Figure 5. In this embodiment, the lens barrel 3 has two protrusions 32, and the The mirror base 4A also has two helical guides 43A. In a preferred embodiment, the numbering protrusions 32 are distributed on the cylindrical wall 31 at equal intervals, and the numbering spiral guide rails 43A are also distributed at equal angles, but the interval angles are not limited to be equal angles.

As shown in FIG. 7 , it is a schematic diagram of a fifth embodiment of the present invention. In this embodiment, the lens barrel 5 and the lens base 6 are still included, but the structure is somewhat different. The lens barrel 5 has a cylindrical wall 51 and at least one spiral guide rail 52, the spiral guide rail 52 radially protrudes from the cylindrical wall 51, and the spiral guide rail 52 covers the outer circumference of the cylindrical wall 51 in the axial direction The regions do not overlap. The mirror base 6 has a round hole wall 61 and at least one protrusion 64. An accommodating space 62 is formed in the round hole wall 61. The accommodating space 62 has an entrance 621 for the lens barrel 5 to be inserted into. The protrusion 64 is located on the radial end surface 63 of the mirror base 6 at the inlet 621 and protrudes from the radial end surface 63 in the axial direction. In this embodiment, the lens barrel 5 and the lens base 6 can still be directly injection molded without secondary processing. In addition, the maximum travel of the spiral guide 52 is the axial vertical distance between the starting point and the end point of the spiral guide, and the maximum travel must be smaller than the vertical distance of the protrusion 64 protruding from the radial end surface 63 to avoid interference. The shapes of the spiral guide rail 52 and the protruding block 64 are also the same as those described in the foregoing embodiments, and are not limited to specific shapes.

Assembly method: the lens barrel 5 is axially inserted into the accommodating space 62 through the inlet 621, and then the protrusion 64 keeps in contact with the spiral guide rail 52, so that the lens barrel 5 cannot be axially inserted into the lens holder 6 temporarily. move. Because this type of optical lens must be fine-tuned on the focal length before the component is fixed, the lens barrel 5 can be rotated by a tool at this time, and the spiral guide rail 52 adopts a sliding method to change the contact position with the protrusion 64 to adjust the lens barrel 5 relative to the axial position of the mirror holder 6 . After adjustment, the position of the lens barrel 5 on the lens base 6 can be fixed with glue.

In the embodiment of FIG. 7 , the number of the bump 64 and the number of the spiral guide rail 52 is one, but it is not limited thereto. As shown in FIG. 8 , which is a schematic diagram of the sixth embodiment of the present invention, the mirror base 6 has two protrusions 64 , and the lens barrel 5 also has two spiral guide rails 52 oppositely. The number of protrusions 64 are distributed on the radial end surface 63 at equal intervals, and the number of spiral guide rails 52 are also distributed on the cylindrical wall 51 at equal angles.

Based on the above, the present invention provides a lens barrel and lens base without screw teeth, which can be directly injection-molded during production and does not require additional processing with a hinge device, and the obtained lens barrel and lens base are accurate in size , the quality is stable, and the optical lens used in mobile phones can precisely adjust the focal length during the production process, which meets the requirements for patent application.

The above disclosures are only preferred examples of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope of the present invention.

Claims (10)

1. a combinative structure for lens barrel and microscope base, including a microscope base and a lens barrel, wherein

This lens barrel has a cylindrical wall and at least one projection, and this projection radially protrudes from this cylindrical wall；

This microscope base has a circular hole wall and at least one helical guideway, forms an accommodation space in this circular hole wall, and this accommodation space has one and enters this lens barrel of confession and insert, and this helical guideway is axially formed the radial ringed end face of this entrance in this microscope base；

This lens barrel is axially installed in this accommodation space, and this projection can keep in touch with this helical guideway, and when this lens barrel is rotated, this projection slides along this helical guideway, adjusts this lens barrel axial location relative to this microscope base.

2. the combinative structure of lens barrel as claimed in claim 1 and microscope base, wherein this projection is multiple.

3. the combinative structure of lens barrel as claimed in claim 2 and microscope base, wherein this projection is multiple, and the number of this helical guideway is less than or equal to this projection number.

4. a combinative structure for lens barrel and microscope base, including a microscope base and a lens barrel, wherein:

This lens barrel has a cylindrical wall and at least one projection, and this projection radially protrudes from this cylindrical wall；

This microscope base has a circular hole wall and at least one helical guideway, an accommodation space is formed in this circular hole wall, this accommodation space has one and enters this lens barrel of confession and insert, this helical guideway is radially recessed in this circular hole wall, position is in this entrance of this circular hole wall, and the region that this helical guideway contains this circular hole wall inner periphery vertically can't overlap；

This lens barrel is axially installed in this accommodation space, and this projection can keep in touch with this helical guideway, and when this lens barrel is rotated, this projection slides along this helical guideway, adjusts this lens barrel axial location relative to this microscope base.

5. the combinative structure of lens barrel as claimed in claim 4 and microscope base, wherein this projection is multiple.

6. the combinative structure of lens barrel as claimed in claim 5 and microscope base, wherein this projection is multiple, and the number of this helical guideway is less than or equal to this projection number.

7. a combinative structure for lens barrel and microscope base, including a microscope base and a lens barrel, wherein:

This lens barrel has a cylindrical wall and at least one helical guideway, and this helical guideway radially protrudes from this cylindrical wall, and the region that this helical guideway contains this cylindrical wall excircle vertically can't overlap；

This microscope base has a circular hole wall and at least one projection, forms an accommodation space in this circular hole wall, and this accommodation space has one and enters this lens barrel of confession and insert, and this projection is positioned at this microscope base in the radial end face of this entrance, and axially projecting in this radial end face；

This lens barrel is axially installed in this accommodation space, and this helical guideway can keep in touch with this projection, and when this lens barrel is rotated, this helical guideway is adopted the mode of sliding and changed the contact position with this projection, adjusts this lens barrel axial location relative to this microscope base.

8. the combinative structure of lens barrel as claimed in claim 7 and microscope base, wherein the range of this helical guideway is the axially vertical distance of this helical guideway Origin And Destination, and this range is necessarily less than this projection and protrudes from the vertical dimension of this radial end face.

9. the combinative structure of lens barrel as claimed in claim 7 and microscope base, wherein this projection is multiple.

10. the combinative structure of lens barrel as claimed in claim 9 and microscope base, wherein this projection is multiple, and the number of this helical guideway is less than or equal to this projection number.