CN215468817U - Use laser welding's resistant water pressure camera lens - Google Patents
Use laser welding's resistant water pressure camera lens Download PDFInfo
- Publication number
- CN215468817U CN215468817U CN202120060039.8U CN202120060039U CN215468817U CN 215468817 U CN215468817 U CN 215468817U CN 202120060039 U CN202120060039 U CN 202120060039U CN 215468817 U CN215468817 U CN 215468817U
- Authority
- CN
- China
- Prior art keywords
- lens
- lens group
- fastener
- laser welding
- barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lens Barrels (AREA)
Abstract
The application provides an use laser welding's water pressure resistant camera lens possesses: a lens group having at least one lens; the lens barrel is used for accommodating and fixing the lens group; the connecting part is used for connecting and fastening the lens group and the lens barrel, the lens group and the lens barrel are connected and fastened through the connecting part, and the connection and fastening mode comprises laser welding; the lens group comprises a lens group main body, the lens group main body is an optical function part of the lens group, and the part of the connecting part for laser welding is separated from the lens group main body. This application has improved welding strength, makes the camera lens be difficult for droing when receiving high pressure bath or striking.
Description
Technical Field
The application relates to the field of optical lenses, in particular to a water pressure resistant lens using laser welding.
Background
In recent years, optical lenses are widely used in various industries, especially in the field of vehicles, and play an important role in safe driving, and are the solid foundation of the intelligent driving technology and the automatic driving technology which are developed at a high speed nowadays. In specific application, the optical lens can be used for monitoring the environmental conditions around the vehicle in real time, and the driving direction and the driving path of the vehicle can be timely adjusted according to the monitoring result of the optical lens, so that the driving safety is ensured.
In the prior art, an optical lens includes a lens barrel and a lens group formed by at least one lens, as shown in fig. 1, the lens group 1A is fixed in the lens barrel 2A by a hot-edge-covered manner, wherein the hot-edge-covered portion 3A on the lens barrel fixes the lens group 1A by a hot-melt flanging. Meanwhile, because the waterproof property of the hot edge 3A is not enough, a seal ring 4A is required to be arranged between the lens barrel and the lens group for preventing water from permeating into the lens barrel. The method has a simple structure, however, after the hot edge covering is subjected to secondary hot melting, the strength is low, and the hot edge covering is easy to tilt when the hot edge covering is subjected to high-pressure flushing or after the hot edge covering is degraded with time, so that the lens is loosened and even falls off.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present application provides a water pressure resistant lens using laser welding, a lens group and a lens barrel, wherein the lens group is fixed to the lens barrel by laser welding.
Preferably, the bottom end of the lens group is fixed to the top end of the lens barrel through laser welding.
Preferably, a welding ring is arranged at the bottom end of the lens group, a welding step is arranged at the top end of the lens barrel, a high-order surface of the welding step and the bottom of the welding ring are fixed through laser welding, and a sealing ring is arranged on a low-order surface of the welding step.
Preferably, the lens barrel further comprises a fastener, wherein the lens barrel and the fastener are fixed by laser welding, and the fastener fixes the lens group on the lens barrel.
Preferably, the fastening pieces are arranged on two sides of the lens group, and the lens group is fixed on the lens barrel through the fastening pieces on the two sides in a clamping mode.
Preferably, the fastener is provided with a laser welding surface, the laser welding surface can be attached to the side surface of the lens barrel, and the laser welding surface is fixed on the side surface of the lens barrel through laser welding;
preferably, one side of the fastening member, which is subjected to laser welding with the lens barrel, is set to be stepped, and the stepped side of the fastening member at least comprises two steps: the outer ring step where the laser welding surface is located and the inner ring step abutted against the lens group;
after the laser welding surface is welded on the side surface of the lens barrel through laser, the height of a first gap between the inner ring step of the fastener and the lens barrel is lower than the height of a second gap between the ring step and the lens barrel.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a sectional view of a conventional lens barrel in the related art.
FIG. 2 is a cross-sectional view of one embodiment of the present invention.
Fig. 3 is a cross-sectional view of another embodiment of the present invention.
Fig. 4 is a cross-sectional view of another embodiment of the present invention.
Fig. 5 is a cross-sectional view of another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The first embodiment is as follows:
fig. 2 is a sectional view of the present embodiment, and fig. 3 is an exploded sectional view of the present embodiment. As shown in fig. 2, the present application provides an optical lens 100 using laser welding, which includes a lens group 1, a lens barrel 2, a sealing washer 4, and a fastener 5. The lens group 1 includes at least 1 lens, is an optical lens for capturing optical information, and is made of glass or a translucent plastic material. The lens barrel 2 is made of a plastic material and houses and fixes the lens group 1. The sealing washer 4 is made of rubber, and is used for sealing between the lens group 1 and the lens barrel 2 and preventing water or dust from entering the lens group 2 and the lens barrel 2. The fastener 5 is made of one-time molding plastic material and is used for connecting and fixing the lens group 1 and the lens barrel 2. In the present embodiment, the fastener 5 corresponds to a connecting portion for connecting and fixing the lens group 1 and the lens barrel 2. The details of each component will be described below with reference to fig. 3. The sealing washer is omitted in fig. 3
The lens group 1 has a substantially flat shape, and includes a substantially spherical front surface 11, a cylindrical side surface 12 extending downward in the vertical direction from the edge of the front surface 11, and a substantially flat bottom surface 13. According to the application scenario, the lens set 1 may further have a concave portion recessed upward from the bottom surface to form different refractive indexes. In this case, the bottom surface 13 is formed in a substantially flat ring shape.
On the other hand, the light-transmitting portion of the lens group 1 is a portion having an optical function, and should be prevented from being thermally deformed as much as possible during the assembly process. For convenience of explanation, a portion of the lens group 1 that performs an optical function will be referred to as a lens group main body. In the present embodiment, since the lens group 1 is fixed by the rim 51 of the fastener 5 described later, the lens group main body in the present embodiment corresponds to the lens group 1 itself.
The lens barrel 2 is formed in a substantially cylindrical shape and includes an outer cylinder 21 and an inner cylinder 22 that constitutes an internal optical space of the optical lens 100 together with the lens group 1. An annular flange 23 protruding upward is formed on the upper portion of the outer cylinder 21, and the inner diameter of the flange 23 is configured to be substantially the same as the outer diameter of the lens group 1 and slightly larger than the outer diameter of the lens group 1, so as to accommodate the lens group 1 and position the lens group 1 in the circumferential direction.
A substantially flat annular first barrel step surface 24 is formed radially inward of the flange 23, and in an assembled state, the first barrel step surface 24 abuts against the bottom surface 13 of the lens group 1 to receive the lens group 1. Further, a first barrel vertical surface 25 extending vertically downward from the circumferential outer end edge of the flange 23 is provided, and the first barrel vertical surface 25 is brought into contact with a first fastener vertical surface 52 of a fastener 5 described later.
Further, a second barrel stepped surface 26 is formed at a position radially outward of the first barrel vertical surface 25 and lower than the first barrel stepped surface 24, and in an assembled state, the second barrel stepped surface 26 faces a first fastener stepped surface 53 of a fastener 5 described later. Further, a second barrel vertical surface 27 extending vertically downward from the outer edge in the circumferential direction of the second barrel stepped surface 26 is provided, and the second barrel vertical surface 27 abuts against a second fastening piece vertical surface 54 of a fastening piece 5 described later. A third barrel stepped surface 28 is formed radially outward of the second barrel vertical surface 27 and at a position lower than the second barrel stepped surface 26, and the third barrel stepped surface 28 is opposed to a second fastener stepped surface 55 of a fastener 5 described later and is used for engagement and fixation with another member, for example, a front bumper cowl of a vehicle body.
The lens barrel 2 is formed in a multistage step shape by the above-described step surfaces and vertical surfaces. Further, in the present embodiment, the second barrel step surface 26 and the third barrel step surface 28 correspond to the inner ring step and the outer ring step of the lens barrel 2.
Next, the fastener 5 will be explained based on the exploded view of the optical lens 100 of fig. 3. As described above, the fastener 5 includes: the edge covering 51 is used for wrapping and fixing the lens group 1; a first fastener vertical surface 52 which is located on the circumferential outer side of the edge cover 51, extends vertically downward, and abuts against the side surface 12 of the lens group 5; an annular first fastener stepped surface 53 extending outward in the circumferential direction from the lower edge of the first fastener vertical surface 52 and facing the second barrel stepped surface 26 of the lens barrel 2; a second fastening member vertical surface 54 extending vertically downward from the outer edge of the first fastening member stepped surface 53 in the circumferential direction and abutting against the second barrel vertical surface 27 of the barrel 2; and an annular second fastening member stepped surface 55 extending outward in the circumferential direction from the lower edge of the second fastening member vertical surface 54 and facing the third barrel stepped surface 28 of the lens barrel 2.
The fastening member 5 is formed in a multi-step shape by the aforementioned respective step surfaces and vertical surfaces. In addition, in the present embodiment, the second fastener vertical surface 54 corresponds to a laser welding surface. Further, the first fastener step face 53 and the second fastener step face 55 of the fastener 5 correspond to the inner race step and the outer race step of the fastener 5.
As shown in fig. 2, the fastener 5 is fixed around the lens barrel 2 by laser welding. Specifically, the second fastener vertical surface 54 of the fastener 5 and the first barrel vertical surface 25 of the barrel 2 are joined by laser welding. By this laser welding, the fastener 5 and the lens barrel 2 are connected and fastened to each other, and at the same time, the edge 51 of the fastener 5 abuts against the edge of the lens group 1, and can be engaged with the flange 23 of the lens barrel 2 to firmly hold the lens group 1 on the lens barrel 2.
In the present embodiment, the contact surface of the fastener 5 with the lens group 1 (i.e., the first fastener vertical surface 52 and the side surface 12 of the lens group 1) is not welded, but laser-welded to the contact surface of the fastener 5 with the lens barrel 2 (i.e., the second fastener vertical surface 54 and the second barrel vertical surface 27 of the lens barrel 2). That is, the fastener 5 is laser-welded only to the lens barrel 2, and the fastener 5 is connected to the lens group 1 mainly by positioning the lens group 1 with the first fastener vertical surface 52 and wrapping and fixing the lens group 1 with the rim 51. This can prevent the optical functional portion of the lens group, that is, the lens group main body from being thermally deformed by heat generated by laser welding, and can ensure the optical performance of the lens group 1 satisfactorily.
On the other hand, the laser welding of the second fastener vertical surface 54 of the fastener 5 and the first barrel vertical surface 25 of the barrel 2 may be performed continuously in the circumferential direction. In this case, since the laser welding surface is continuous in the circumferential direction, it is possible to seal the internal optical space of the optical lens 100 against foreign substances such as water and dust, and it is possible to further enhance the sealing of the internal optical space of the optical lens 100 by fitting with the gasket 4 shown in fig. 2. In this case, the welding cost and man-hours can be effectively reduced.
Further, in the assembled state, gaps (non-abutment) are formed between the first fastener step face 53 of the fastener 5 and the second barrel step face 26 of the lens barrel 2, and between the second fastener step face 55 of the fastener 5 and the third barrel step face 28 of the lens barrel 2. It is further preferable that a gap between the first fastener stepped surface 53 of the fastener 5 and the second barrel stepped surface 26 of the lens barrel 2 is smaller than a gap between the second fastener stepped surface 55 of the fastener 5 and the third barrel stepped surface 28 of the lens barrel 2. For example, the gap between the first fastener step surface 53 of the fastener 5 and the second barrel step surface 26 of the lens barrel 2 is 0.1mm, and the gap between the second fastener step surface 55 of the fastener 5 and the third barrel step surface 28 of the lens barrel 2 is 0.2 mm. This can effectively absorb manufacturing errors of the member, and prevent the edge 51 of the fastener 5 from failing to abut against the outer edge of the lens group 1 or the edge 51 of the fastener 5 from being higher than the outer edge of the lens group 1.
According to the embodiment, the fastening piece 5 is made of one-step molding plastic, and compared with the conventional hot-edge covering structure, hot melting treatment is reduced in the assembling process, so that the strength is better, and the fastening piece is not easy to fall off when high-pressure flushing or impact is applied.
In addition, laser welding is local heating, and is very little to the product heat loss, burr and dust can not appear, and the outward appearance is level and smooth. Further, laser welding does not cause vibration, does not cause internal damage, and can stably maintain mechanical strength, making the structure more reliable. In addition, in this embodiment, only laser welding is performed between the fastening member 5 and the lens barrel 2, and any surface of the lens group 1 is not laser welded, so that thermal deformation of the lens group 1 is effectively reduced, and the optical performance of the lens group 1 can be ensured.
Example two:
fig. 4 shows a cross-sectional view of another embodiment of the present invention. As shown in fig. 4, the present application provides an optical lens using laser welding, which includes a lens group 1 and a lens barrel 2. The present embodiment is different from embodiment 1 in that the fastening member 5 is not provided in the present embodiment, and a welding flange 14 for laser welding with the lens barrel 2 is provided on the outer edge of the lower end of the lens group 1. That is, in the present embodiment, the function of the connecting portion between the lens group 1 and the lens barrel 2 is realized by the welding flange 14 of the lens group 1. The components other than the above are the same as those in embodiment 1, and therefore, detailed description thereof is omitted.
Specifically, a welding flange 14 for welding and fixing to the lens barrel 2 side is provided at the bottom end of the lens group 1, a welding step 29 is provided at the upper end outer edge of the lens barrel 2, and the lens group 1 is fixed by laser welding in a state where the welding step 29 abuts against the welding flange 14. That is, an annular welding step 29 is formed on the outer edge of the surface of the lens barrel 2 facing the lens group 1, and the welding step 29 is higher by 0.1 to 0.2mm than the other portion of the surface of the lens barrel 2 facing the lens group 1.
Thus, in the present embodiment, the thermal hemming structure is eliminated, and the height of the lens barrel 2 can be reduced to be lower than the lens group 1. The laser welding between the lens group 1 and the lens barrel 2 may be performed continuously in the circumferential direction or intermittently. In the former case, the seal ring 4 and the laser welding structure perform a double sealing function. Because the contact surface between the lens group 1 and the lens barrel 2 is changed, the strength is higher, and the high-pressure flushing resistance and the impact resistance are better.
In the present embodiment, the laser welding of the lens group 1 and the lens barrel 2 is performed at the welding flange 14 on the lower end outer edge of the lens group 1. Therefore, the optical function portion of the lens group 1, that is, the lens group main body, is not subjected to laser welding, so that the thermal deformation of the lens group 1 is effectively reduced, and the optical performance of the lens group 1 can be ensured. Here, the lens group main body in the present embodiment corresponds to the portion of the lens group 1 excluding the welding flange 14.
Example three:
fig. 4 shows a cross-sectional view of another embodiment of the present invention. As shown in fig. 5, the present embodiment provides a water pressure resistant lens using laser welding, which has a structure similar to that of the second embodiment, and includes a lens group 1 and a lens barrel 2, wherein a welding flange 14 for performing welding and fixing is provided at the lower end outer edge of the lens group 1, and a welding step 29 is provided at the upper end outer edge of the lens barrel 2.
The present embodiment is different from the second embodiment in that laser welding between the lens group 1 and the lens barrel 2 is continuously performed in the circumferential direction in the present embodiment. By utilizing the sealing effect of the circumferential continuous laser welding, the sealing gasket 4 can be omitted under the condition of meeting the sealing performance of the optical lens, the cost is saved, and meanwhile, the waterproof performance of the lens can be ensured. In addition, as in the second embodiment, the lens group body of the lens group 1 is not laser-welded in the present embodiment, so that the thermal deformation of the lens group 1 is effectively reduced, and the optical performance of the lens group 1 can be ensured. Here, the lens group main body in the present embodiment corresponds to the portion of the lens group 1 excluding the welding flange 14.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (5)
1. A water pressure resistant lens using laser welding is characterized by comprising:
a lens group having at least one lens;
the lens barrel is used for accommodating and fixing the lens group; and
a connecting part for connecting and fastening the lens group and the lens barrel,
the lens group and the lens barrel are connected and fastened through the connecting part, and the connection and fastening mode comprises laser welding;
the lens group comprises a lens group main body, the lens group main body is an optical function part of the lens group, and the part of the connecting part for laser welding is separated from the lens group main body.
2. The water pressure resistant lens using laser welding as claimed in claim 1,
the connecting part is provided with a fastening piece,
the lens barrel and the fastener are fixed through laser welding, and the lens group is fixed on the lens barrel through the fastener.
3. The water pressure resistant lens using laser welding as claimed in claim 2,
the fastener comprises a first fastener vertical surface abutted with the lens group and a second fastener vertical surface abutted with the lens barrel and positioned on the circumferential outer side of the first fastener vertical surface, wherein the second fastener vertical surface is a surface which is subjected to laser welding with the lens barrel,
the fastener further includes an annular fastener inner ring step extending circumferentially outward from a lower edge of the first fastener vertical surface, and a fastener outer ring step extending circumferentially outward from a lower edge of the second fastener vertical surface,
the lens cone is provided with a lens cone inner ring step which is abutted with the fastener inner ring step and a lens cone outer ring step which is abutted with the fastener outer ring step,
in an assembled state of the water pressure resistant lens, a first gap height between the step of the inner ring of the fastener and the step of the inner ring of the lens barrel is lower than a second gap height between the step of the outer ring of the fastener and the step of the outer ring of the lens barrel.
4. The water pressure resistant lens using laser welding as claimed in claim 1,
the connecting part is arranged to be a welding flange at the outer edge of the lower end of the lens group, and the welding flange and the lens group are integrally formed;
the outer edge of the upper end of the lens cone is provided with a welding step,
and the welding convex edge of the lens group and the welding step of the lens barrel are subjected to laser welding, so that the lens group and the lens barrel are connected and fastened.
5. The water pressure resistant lens using laser welding according to any one of claims 1 to 4, wherein a sealing gasket for sealing is provided between the lens group and the lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120060039.8U CN215468817U (en) | 2021-01-11 | 2021-01-11 | Use laser welding's resistant water pressure camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120060039.8U CN215468817U (en) | 2021-01-11 | 2021-01-11 | Use laser welding's resistant water pressure camera lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215468817U true CN215468817U (en) | 2022-01-11 |
Family
ID=79760858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120060039.8U Active CN215468817U (en) | 2021-01-11 | 2021-01-11 | Use laser welding's resistant water pressure camera lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215468817U (en) |
-
2021
- 2021-01-11 CN CN202120060039.8U patent/CN215468817U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1528271B1 (en) | Ball joint components and methods for making same | |
| US7118250B2 (en) | Vehicular lamp and method of manufacturing same | |
| US8714796B2 (en) | Outer casing for headlight and headlight | |
| CN102985708A (en) | Ball joint and method for producing ball joint | |
| US7869146B2 (en) | Lens module | |
| JP2000193007A (en) | Flat spring-integrated core and its manufacture | |
| CN215468817U (en) | Use laser welding's resistant water pressure camera lens | |
| JP2019179075A (en) | Lens unit | |
| CN110291298B (en) | Improved socket assembly and method of manufacture | |
| CN112872587A (en) | Water pressure resistant lens using laser welding and welding method thereof | |
| KR101288203B1 (en) | Method for producing a chassis component | |
| JP2019179076A (en) | Lens unit | |
| JP2017053933A (en) | Lens unit | |
| JP4832239B2 (en) | Oil strainer and method for producing oil strainer | |
| JPH05141410A (en) | Axle strut joint | |
| KR20150122622A (en) | Resinous radiator cap and mounting structure therefor | |
| JP5426143B2 (en) | Manufacturing method of injection molded body | |
| US20210071714A1 (en) | Slide bearing and method for manufacturing same | |
| CN109421463B (en) | Ball hinge, automobile transverse stabilizer bar connecting rod assembly and preparation method thereof | |
| KR20120038844A (en) | The structure of hollow-fiber membrane module housing with a function of improved assembling performance | |
| JP2008185966A (en) | Camera module | |
| CN210007587U (en) | voice coil motor leak-proof glue assembly structure | |
| JP2006073296A (en) | Vehicular lamp and laser welding method of vehicular lamp | |
| JP5753938B2 (en) | RESIN RADIATOR CAP AND METHOD FOR MANUFACTURING THE SAME | |
| JP3642272B2 (en) | Optical element fixing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |