TWI428199B - Assembling apparatus - Google Patents

Description

Assembly fixture

The present invention relates to lens module technology, and more particularly to an assembly fixture for assembling a lens to a lens barrel.

In recent years, with the development of multimedia technology, the application range of lens modules has become wider and wider, such as in electronic products such as digital cameras, video cameras, and mobile phones with camera functions. People are pursuing miniaturization of digital cameras, camcorders, and mobile phones with camera functions. At the same time, the image quality of the objects they shoot is also higher, that is, the image of the object is clear, and the image quality of the object is very high. It depends largely on whether the optical axes of the lenses in the lens module are aligned during assembly. Alpheus et al., "Zoom lens calibration for wind tunnel measurements", presented at the 1995 SPIE System, Videometrics IV, revealed that the optical axes of the lenses in the lens module are not aligned. The impact. Therefore, the assembly of the lens must be quite accurate to increase the probability of alignment of the optical axis, thereby improving the imaging quality of the lens module.

The lens module generally includes a cylindrical lens barrel and one or a plurality of lenses housed in the lens barrel. When assembling the lens module, the common nozzle sucks the lens from the tray and places the lens on the lens barrel, and then the staff assembles the lens into the appropriate position in the lens barrel by using a pressure bar. In the prior art, the pressure bar generally comprises a body that is both cylindrical and a push head. The body is used for the operator to apply the force, and the diameter is generally larger than the inner diameter of the lens barrel. . The diameter of the pushing head is generally smaller than the inner diameter of the lens barrel, and is used for pushing the assembled lens into the lens barrel when the worker applies force. However, it is difficult for the worker to precisely control the direction and depth of the push head pushing during the pushing process. When the direction of pushing the push head deviates from the predetermined direction, the tilt of the lens in the lens module may be caused, so that the optical axis of the lens is tilted, thereby affecting the optical performance of the lens module. When the depth of the pushing head does not match the predetermined depth, the lens assembly position in the lens module may be wrong, thereby affecting the imaging position of the lens and affecting the imaging quality of the lens module.

In view of the above, it is necessary to provide an assembly jig that can improve the assembly accuracy of the lens in the lens barrel.

An assembly jig will be described below by way of example.

An assembly fixture for assembling a lens to a lens barrel, the assembly fixture comprising a pressure bar, an abutting member and an elastic member. The pressure bar includes a body and a push head coupled to one end of the body, the push head being for contacting the lens to urge the lens. The abutting member is movably sleeved on the pressing head for abutting against the lens barrel. The elastic member is disposed between the pressure bar and the abutting member for abutting against the lens barrel and elastically deforming along the axial direction of the pressure bar when the pressure bar moves relative to the abutting member in the axial direction thereof. Thereby the push head is exposed from the abutment to contact the lens.

The assembly jig of the technical solution has the following advantages: firstly, the abutting member can ensure that the moving direction of the pressure bar does not tilt by the stable abutment with the lens barrel, thereby avoiding the oblique assembly of the lens in the lens barrel; The elastic deformation of the elastic member can control the pushing depth of the pressing rod, thereby ensuring that the lens is pushed to a predetermined position, and improving the assembly precision of the lens module; again, the assembling fixture of the technical solution is convenient for operation and can improve work. The efficiency of the personnel assembling the lens module.

1, 2‧‧‧assembly fixture

12, 22‧‧‧ pressure bar

14‧‧‧Attendance

16, 26‧‧‧Flexible components

120, 220‧‧‧ ontology

122‧‧‧Pushing head

123‧‧‧Clock Department

124‧‧‧Pressing Department

1230‧‧‧ card slot

1231‧‧‧ outer surface

1232‧‧‧ top surface

1233‧‧‧First contact surface

1234‧‧‧Second contact surface

1235‧‧‧ engaging surface

1240‧‧‧ receiving trough

1241‧‧‧Fitting surface

15, 25‧‧‧Fixed ring

141‧‧‧fixed surface

142‧‧‧Abutment

143‧‧‧ side

140‧‧‧through hole

1401‧‧‧ first hole

1402‧‧‧second hole

1404‧‧‧ bottom

151‧‧‧ Fixed Department

152‧‧‧ protruding parts

150‧‧‧ snap hole

1501, 2501‧‧‧ first half ring

1502, 2502‧‧‧ second half ring

261‧‧‧elastic resin block

FIG. 1 is a schematic diagram of a combination of an assembly jig provided by a first embodiment of the present technical solution.

FIG. 2 is an exploded perspective view of the assembly jig provided by the first embodiment of the present technical solution.

FIG. 3 is an exploded perspective view showing another perspective of the assembly jig provided by the first embodiment of the present technical solution.

Figure 4 is a cross-sectional view taken along line IV-IV of Figure 1.

FIG. 5 is a schematic view showing the assembly of the assembly jig provided by the first embodiment of the present technical solution.

FIG. 6 is a schematic diagram of an assembly jig provided by a second embodiment of the present technical solution.

The assembly jig provided by the technical solution will be further described in detail below with reference to the accompanying drawings and the embodiments.

Referring to FIG. 1 to FIG. 4 , the assembly jig 1 provided by the first embodiment of the present invention is used for assembling a lens to a lens barrel, which comprises a pressure bar 12 , an abutting member 14 and an elastic member 16 .

The pressure bar 12 includes a body 120 and a push head 122. The body 120 is for applying force to a worker, and the pressing head 122 is coupled to one end of the body 120 for contacting the lens to push the lens. In this embodiment, the body 120 is cylindrical, the pressing head 122 is also substantially cylindrical, and the body 120 is disposed coaxially with the pressing head 122. Specifically, the pressing head 122 includes a cylindrical engaging portion 123 and a nip portion 124. The engaging portion 123 is connected between the body 120 and the nip 124 and has a diameter smaller than the diameter of the body 120 and larger than the diameter of the nip 124. The engaging portion 123 has an annular outer surface 1231 and a top surface 1232 connected to one end of the outer surface 1231 away from the engaging portion 123. The outer surface 1231 defines an annular card slot 1230, the card The groove 1230 is for engaging with the abutment 14. The card slot 1230 has a first contact surface 1233 , a second contact surface 1234 opposite to the first contact surface 1233 , and an engagement surface 1235 connected between the first contact surface 1233 and the second contact surface 1234 . The first contact surface 1233 and the second contact surface 1234 are both planar and are perpendicular to the central axis of the urging head 122. The engaging surface 1235 is annular, and its central axis coincides with the central axis of the pressing head 122. The top surface 1232 is a flat surface, and the nip portion 124 extends from the top surface 1232 in a direction away from the engaging portion 123. The nip portion 124 has a pressing surface 1241 at one end of the engaging portion 123. The receiving surface 1241 defines a receiving groove 1240 corresponding to the shape of the optical portion of the lens. The receiving groove 1240 is used for assembly. The optics of the lens are housed during the process to avoid touching the optic portion of the lens and affecting the optical performance of the lens.

The abutting member 14 is movably sleeved on the pressing head 122 and is used to abut against the lens barrel. In this embodiment, the abutting member 14 is engaged with the latching groove 1230 of the engaging portion 123 through the fixing ring 15, and is movable together with the fixing ring 15 from the one end of the first contact surface 1233 to the close to the first slot 1230. One of the two contact faces 1234.

In this embodiment, the abutting member 14 has a cylindrical shape near one end of the body 120 and a frustum-conical shape at the other end. The abutting member 14 has a fixing surface 141 close to the body 120, an abutting surface 142 opposite to the fixing surface 141, and a side surface 143 connected between the fixing surface 141 and the abutting surface 142. The fixing surface 141 is a flat surface for fixing to the fixing ring 15 . The abutting surface 142 is also a flat surface having a diameter corresponding to the outer diameter of the lens barrel for abutting against the lens barrel. The side surface 143 is an annular surface, and a portion thereof near the fixing surface 141 is a cylindrical surface, and a portion close to the abutting surface 142 is a tapered surface.

The abutting member 14 further has a through hole 140 extending through the fixing surface 141 and the abutting surface 142 for receiving the pressing head 122. Specifically, the through hole 140 includes a continuous connection The first hole 1401 and the second hole 1402. The first hole 1401 is a cylindrical hole that penetrates the fixing surface 141 and has an inner diameter corresponding to the inner diameter of the engaging portion 123 for receiving the engaging portion 123. The first hole 1401 has a bottom surface 1404 opposite to the top surface 1232 of the engaging portion 123. The second hole 1402 is also a cylindrical hole that penetrates the bottom surface 1404 and the abutting surface 142 and has an inner diameter corresponding to the inner diameter of the nip 124 for receiving the nip 124.

The fixing ring 15 has a fixing portion 151 fixed to the fixing surface 141 and a protruding portion 152 fixed to the side surface 143. The fixing portion 151 is annular, and has a cylindrical engaging hole 150 in the middle portion for engaging with the engaging surface 1235 of the card slot 1230. The protrusion 152 is also annular and is disposed at the most edge portion of the fixing portion 151. The fixing ring 15 can be fixed to the abutting member 14 by bonding, screwing, riveting, welding or the like.

In this embodiment, in order to facilitate the engagement of the fixing ring 15 in the card slot 1230, the fixing ring 15 is divided into a first half ring 1501 and a second half ring 1502 having the same structure. The first half ring 1501 and the second half ring 1502 each have a half of the fixing portion 151, a half of the protruding portion 152, and a half of the engaging hole 150. Therefore, when the abutting member 14 is engaged with the pressing head 122, the abutting member 14 can be sleeved on the pressing head 122, and then the first half ring 1501 and the second half ring 1502 can be engaged with the card slot. The two sides of the 1230 are respectively brought into contact with the engaging surface 1235, and finally the first half ring 1501 and the second half ring 1502 are respectively fixed to the abutting member 14.

Of course, the fixing ring 15 can also have only the fixing portion 151 without the protruding portion 152, and can also be fixed to the abutting member 14. The fixing ring 15 may not be divided into the first half ring 1501 and the second half ring 1502, and may be engaged with the card slot 1230 by an interference fit or other means. Moreover, instead of using the fixing ring 15, an annular projection can be formed on the abutting member 14, and the abutting member 14 can also be movably engaged with the abutting member 14. In addition, the pressing head 122 may not form the annular card slot 1230, but form an annular protrusion, and the abutting member 14 Forming a corresponding annular card slot thereon also allows the abutment member 14 to be movably engaged with the abutment member 14. In addition, a slot or a protrusion may be formed on one end of the body 120 near the pressing head 122, so that the abutting member 14 forms a corresponding protrusion or a card slot, so that the abutting member 14 can be replaced by a card slot. The protrusion is movably engaged with the body 120 and sleeved on the pressing head 122.

The elastic element 16 is disposed between the pressure bar 12 and the abutment 14 . In this embodiment, the elastic member 16 is a spring disposed between the top surface 1232 of the engaging portion 123 and the bottom surface 1404 of the first hole 1401 and surrounding the portion of the nip portion 124 adjacent to the engaging portion 123. Thereby, the elastic deformation direction of the elastic member 16 is parallel to the central axis direction of the nip portion 124, that is, the direction of the central axis of the pressure bar 12. When the elastic member 16 is in a natural state, the nip portion 124 is received in the second hole 1402, and the second contact surface 1234 of the card slot 1230 is in contact with the fixing ring 15. The maximum elastic deformation amount of the elastic member 16 is less than or equal to the difference between the width of the card slot 1230 and the thickness of the fixing portion 151, that is, less than or equal to the distance between the first contact surface 1233 and the second contact surface 1234 and the fixing portion 151. The difference in thickness. Thereby, according to the elastic deformation of the elastic member 16, the abutting member 14 can move together with the fixing ring 15 from one end close to the first contact surface 1233 to one end near the second contact surface 1234 with respect to the card slot 1230.

When assembling and pushing the lens to the appropriate position in the lens barrel using the assembly jig 1 of the first embodiment of the present technical solution, please refer to FIG. 4 and FIG. 5 together. First, the abutting surface 142 of the abutting member 14 is used. Abutting against the lens barrel and biasing the body 120 of the pressure bar 12 to move the pressure bar 12 along its axis toward the lens barrel and the abutting member 14, the elastic member 16 is compressed by the engaging portion 123 to be elastically deformed. So that the portion of the pressing head 122 near the pressing surface 1241 is exposed from the second hole 1402 of the abutting member 14, so that the pressing surface 1241 is in contact with the lens; secondly, the body 120 is continuously pushed so that the pressing rod 12 continues to Moving closer to the lens barrel and the abutting member 14 and causing the fixing ring 15 to continue toward the first contact surface 1233, the urging head 122 continues to push the lens into the lens barrel until the elastic member 16 is elastically deformed to To a certain extent, and the lens is pushed to a predetermined position in the lens barrel, the assembly of the lens module can be completed.

Referring to FIG. 6, the assembly jig 2 of the second embodiment of the present technical solution is substantially the same as the assembly jig 1 of the first embodiment, except that the elastic member 26 includes two elastic resin blocks 261, and the two The elastic resin blocks 261 are disposed opposite to each other between the fixing ring 25 and the body 220 of the pressure bar 22. Specifically, one of them is disposed between the first half ring 2501 and the body 220, and the other is disposed between the second half ring 2502 and the body 220.

Of course, the elastic member 26 may be other elastic members than the spring and the elastic resin block, and may be disposed at other positions, and only the direction of the elastic deformation thereof is parallel to the central axis direction of the pressure bar 22.

The assembly jig of the technical solution has the following advantages: firstly, the abutting member abuts against the lens barrel to ensure that the moving direction of the pressure bar does not tilt, thereby avoiding the oblique assembly of the lens in the lens barrel; secondly, The elastic deformation of the elastic member can control the pushing depth of the pressure bar, thereby ensuring that the lens is pushed to a predetermined position, thereby improving the assembly precision of the lens module; again, the assembly tool of the technical solution is convenient for operation and can be improved The efficiency of the staff assembling the lens module.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

1‧‧‧Assembled fixture

120‧‧‧ body

1230‧‧‧ card slot

1232‧‧‧ top surface

1233‧‧‧First contact surface

1234‧‧‧Second contact surface

1235‧‧‧ engaging surface

1240‧‧‧ receiving trough

1241‧‧‧Fitting surface

140‧‧‧through hole

1401‧‧‧ first hole

1402‧‧‧second hole

1404‧‧‧ bottom

15‧‧‧Fixed ring

151‧‧‧ Fixed Department

152‧‧‧ protruding parts

Claims (11)

An assembly fixture for assembling a lens to a lens barrel, the assembly fixture comprising a pressure bar, an abutting member and an elastic member, the pressure bar comprising a body and a pushing head connected to one end of the body, the pressing The head is for contacting the lens to push the lens, the pressing head has a card slot or a protrusion; the abutting member has a corresponding protrusion or a card slot, and the abutting member is supported by the slot and the protrusion The mate is movably sleeved on the pressing head for abutting against the lens barrel; the elastic element is disposed between the pressure bar and the abutting member for abutting against the lens barrel and pressing the rod edge The axial direction thereof is elastically deformed in the direction of the axis of the pressure bar relative to the abutting member, so that the pressing head is exposed from the abutting member to come into contact with the lens. The assembly jig of claim 1, wherein the body has a card slot or a protrusion near one end of the pressing head, and the abutting member has a corresponding protrusion or a card slot to The abutment is movably engaged with the body by the cooperation of the card slot and the protrusion. The assembly jig of claim 2, wherein the card slot and the protrusion are both annular. The assembly jig according to claim 1, wherein the pressing head has a card slot, and the assembly jig further includes a fixing ring corresponding to the card slot, and the fixing ring is fixed at the The abutting member is adjacent to one end of the body, and the abutting member is movably engaged with the pressing head by the cooperation of the fixing ring and the card slot. The assembly jig of claim 4, wherein the card slot is an annular groove. The assembly jig of claim 4, wherein the elastic member is disposed between the body and the fixing ring. The assembly jig of claim 1, wherein the abutting member has a pressing surface for contacting the lens, a fixing surface opposite to the pressing surface, and the pressing surface solid a through hole corresponding to the pressing hole, and the through hole corresponds to the pressing head for receiving the pressing head. The assembly jig of claim 7, wherein the pressing head comprises an engaging portion and a nip portion both coaxial with the body, and the engaging portion is connected between the body and the nip portion. The diameter is between the diameter of the body and the diameter of the nip, the through hole includes a first hole and a second hole that communicate with each other, the first hole is for receiving the nip and the elastic element, the second The hole is for receiving the nip. The assembly jig of claim 8, wherein the first hole has a bottom surface opposite to the pressing surface, and the elastic member is disposed between the engaging portion and the bottom surface. The assembly jig of claim 7, wherein the pressing surface is provided with a receiving groove for receiving the lens. The assembly jig of claim 1, wherein the elastic member is a spring or an elastic resin block.