CN111474659A - Sealing washer, camera lens, module of making a video recording, electronic equipment and mould - Google Patents

Abstract

The application discloses sealing washer, camera lens, module, electronic equipment and mould of making a video recording, include: the orthographic projection of the annular ring on the projection surface is a first projection, the projection surface is vertical to the axial direction of the annular ring, the first projection is annular and comprises a first outer ring line positioned on the outer side, and the first outer ring line is formed by projecting a second outer ring line on the outer surface wall of the annular ring; wherein, the outward appearance wall of annular ring includes the burr area, and the burr takes the shaping to have the burr when the sealing washer is moulded plastics, and second outer lane line part at least lies in the burr outband. Because the annular ring seals, the second outer lane line carries out the butt with the external component, when the burr that has on the second outer lane line or remaining the burr and reduce, can strengthen the inseparability of contact between sealing washer and the external component to the sealed effect of sealing washer has been promoted.

Description

Sealing washer, camera lens, module of making a video recording, electronic equipment and mould

Technical Field

The application relates to the technical field of sealing devices, in particular to a sealing ring, a lens, a camera shooting module, electronic equipment and a mold.

Background

The sealing ring is a common component for sealing, and is annular and elastic. The burr can be formed on the outer surface wall during sealing washer injection moulding, and the burr can be got rid of in the later stage. On the one hand, the removal step of the burrs increases the manufacturing cost, and on the other hand, the burrs are difficult to remove cleanly.

The conventional lens includes a lens barrel, a lens, a seal ring, and the like. A sealing ring is connected between the lens at the object side end of the lens and the inner side wall of the lens barrel to prevent foreign matters such as water or dust from entering the lens barrel from the object side of the lens barrel. The outer peripheral wall of the lens is abutted to the inner ring position of the sealing ring, and the inner peripheral wall of the lens barrel is abutted to the outer ring position of the sealing ring, so that the sealing ring is extruded and deformed by the inner side and the outer side, and the purpose of sealing the gap between the lens and the lens barrel is achieved. Burrs of a sealing ring in the existing lens are respectively positioned at the outer ring and the inner ring. When the sealing ring is sealed, the sealing effect between the outer ring of the sealing ring and the lens barrel and between the inner ring of the sealing ring and the lens cannot meet the actual requirement due to the influence of burrs.

Disclosure of Invention

The application provides a sealing washer, camera lens, module, electronic equipment and mould of making a video recording can promote sealed effect.

According to an aspect of the present application, there is provided a seal ring for a lens, including:

the orthographic projection of the annular ring on the first projection surface is a first projection, the first projection surface is perpendicular to the axial direction of the annular ring, the first projection is annular and comprises a first outer ring line positioned on the outer side, and the first outer ring line is formed by projecting a second outer ring line on the outer surface wall of the annular ring;

wherein, the outward appearance wall of annular ring includes the burr area, and the burr takes the shaping to have the burr when the sealing washer is moulded plastics, and second outer lane line part at least lies in the burr outband.

In the above-mentioned scheme, because the sealing washer is installed behind the camera lens, at least some position of the second outer lane line of annular ring can closely laminate in other parts in the camera lens owing to not receiving the influence of burr, compare in prior art second outer lane line department and be covered with the burr or get rid of the incomplete structure that produces behind the burr better leakproofness.

According to some embodiments, the first projection further comprises a first inner loop wire on the inner side, the first inner loop wire being formed by a projection of a second inner loop wire on the outer surface wall;

the second inner coil wire is at least partially outside the glitch band.

In the above-mentioned scheme, because the sealing washer is installed behind the camera lens, the at least some position of the second inner circle line of annular ring can closely laminate in other parts in the camera lens owing to not receiving the influence of burr, compares in prior art second inner circle line department and is covered with the structure of the incomplete that produces behind the burr or get rid of the burr better leakproofness.

According to some embodiments, the second inner loop wire is located outside the spur band; and/or

The second outer coil line is located outside the burr band.

In the above-mentioned scheme, can eliminate the burr completely to the influence of sealed effect, make the sealed effect of sealing washer better.

According to some embodiments, an orthographic projection of the annular ring in a second projection plane is a second projection, the second projection plane is parallel to the axial direction of the annular ring, the second projection comprises a first side line and a second side line arranged opposite to the first side line, and the first side line and the second side line are perpendicular to the axial direction of the annular ring;

the first side edge line is formed by projection of a first side loop line on the annular ring, and the second side edge line is formed by projection of a second side loop line on the annular ring;

the burr area includes first annular area and second annular area, and first annular area extends and first side loop is located first annular area along the circumference of first side loop, and the second annular area extends and second side loop is located the second annular area along the circumference of second side loop.

In the above-mentioned scheme, can eliminate the burr completely to the influence of sealed effect, make the sealed effect of sealing washer better.

According to some embodiments, the burr band further comprises two outer arc bands arranged around the periphery of the annular ring, one ends of the outer arc bands are connected with the first annular band respectively, the other ends of the outer arc bands are connected with the second annular band respectively, and the two outer arc bands are arranged at two ends of the annular ring in an opposite manner.

In the scheme, the mold opening of the sealing ring can be conveniently carried out, and the manufacturing of the sealing ring is facilitated.

According to some embodiments, the burr band further comprises two inner arcs arranged around an inner circumference of the annular ring, one ends of the inner arcs are respectively connected with the first annular band, the other ends of the inner arcs are respectively connected with the second annular band, and the two inner arcs are oppositely arranged at two ends of the annular ring.

In the scheme, the mold opening of the sealing ring can be conveniently carried out, and the manufacturing of the sealing ring is facilitated.

According to some embodiments, the burr band comprises three or more outer arc bands arranged around the periphery of the annular ring, one end of each outer arc band is connected with the first annular band, the other end of each outer arc band is connected with the second annular band, and the outer arc bands are arranged in a circular array by taking the central axis of the annular ring as an axis;

the burr area includes the inner arc area that three or three more arrange around the inner periphery of annular circle, and the one end in each inner arc area is equallyd divide and is connected first annular area respectively, and the other end is equallyd divide and is connected the second annular area respectively, and each outer arc area uses the axis of annular circle to be circular array and arranges as the axis.

In the scheme, the mold opening of the sealing ring can be conveniently carried out, and the manufacturing of the sealing ring is facilitated.

A second aspect of the present application also provides a lens barrel, including:

a seal ring according to any one of the preceding claims;

the lens cone is provided with an accommodating cavity, and the sealing ring is arranged in the accommodating cavity;

the lens group is arranged in the accommodating cavity.

The sealing effect of the sealing ring in the scheme is better.

The third aspect of the present application further provides a camera module, including:

the lens described above;

and the imaging chip is arranged at the image side end of the lens and used for receiving the light rays passing through the lens group and carrying out imaging processing.

The sealing effect of the sealing ring of the lens in the scheme is better.

The fourth aspect of the present application further provides an electronic device, which includes the above-mentioned camera module.

The sealed effect of the sealing washer of module of making a video recording in the above-mentioned scheme is better.

The fifth aspect of the present application further provides a mold for processing the above-mentioned sealing ring, including:

the outer die comprises an inner hole, and a first annular groove arranged along the circumferential direction of the inner circumferential wall is formed in the inner circumferential wall of the inner hole;

the inner die comprises an outer peripheral wall, and a second annular groove arranged along the circumferential direction of the outer peripheral wall is formed in the outer peripheral wall;

the first annular groove and the second annular groove jointly define an injection molding cavity for injection molding of the sealing ring.

In the above scheme, the burrs at the outer circumference and the inner circumference of the manufactured sealing ring are less, and the sealing effect of the sealing ring is improved.

According to an embodiment, the outer mould comprises a first sub-mould and a second sub-mould, the first sub-mould comprises a first half arc wall, the second sub-mould comprises a second half arc wall, the inner peripheral wall of the inner hole is formed by combining the first half arc wall and the second half arc wall, a first forming groove is formed in the first half arc wall, a second forming groove is formed in the second half arc wall, and the first annular groove is formed by combining the first forming groove and the second forming groove.

In the scheme, the mold opening of the sealing ring is easier, and the sealing ring is convenient to process.

According to an embodiment, the inner mold comprises a third mold and a fourth mold, the third mold comprises a third half arc wall, the fourth mold comprises a fourth half arc wall, the outer peripheral wall of the inner mold is formed by combining the third half arc wall and the fourth half arc wall, a third forming groove is formed in the third half arc wall, a fourth forming groove is formed in the fourth half arc wall, and the second annular groove is formed by combining the third forming groove and the fourth forming groove.

In the scheme, the mold opening of the sealing ring is easier, and the sealing ring is convenient to process.

According to an embodiment, the inner mold comprises a third parting mold and a fourth parting mold, the third parting mold comprises a first circumferential wall, the fourth parting mold comprises a second circumferential wall, the circumferential wall of the inner mold is formed by combining the first circumferential wall and the second circumferential wall along the axial direction of the first circumferential wall, a third forming groove is arranged at the end part, close to the second circumferential wall, of the first circumferential wall, a fourth forming groove is arranged at the end part, close to the first circumferential wall, of the second circumferential wall, and the second forming groove is formed by combining the third forming groove and the fourth forming groove.

In the scheme, the mold opening of the sealing ring is easier, and the sealing ring is convenient to process.

According to one embodiment, the inner peripheral wall of the inner bore is provided with a plurality of first annular grooves, each arranged in a row in a direction parallel to the bore axis;

a plurality of second annular grooves are formed in the peripheral wall of the inner mold, and the injection molding cavities are defined by the second annular grooves and the first annular grooves in a one-to-one correspondence mode.

In the above scheme, the mould can process a plurality of sealing rings at a time, has improved the production efficiency of sealing ring.

The application provides a sealing washer, sealing washer include the annular ring, and the annular ring circles the burr that has the shaping when moulding plastics, and the burr is located the burr area on the annular ring outward appearance wall. In the prior art, burrs are fully distributed or residual burrs are distributed on the second outer ring line on the periphery of the annular ring, and in this embodiment, at least part of the second outer ring line is located outside the burr band. Because the annular ring seals, the second outer lane line carries out the butt with the external component, when the burr that has on the second outer lane line or remaining the burr and reduce, can strengthen the inseparability of contact between sealing washer and the external component to the sealed effect of sealing washer has been promoted.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings 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 of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic full-section view of a lens in the prior art;

FIG. 2 is a perspective view of a prior art seal ring, partially in section;

FIG. 3 is a perspective view, partially in section, of a seal ring according to a first embodiment of the present application;

FIG. 4 is a perspective view, partially in section, of a seal ring according to a second embodiment of the present application;

FIG. 5 is a perspective view, partially in section, of a seal ring according to a third embodiment of the present application;

FIG. 6 is a perspective view, partially in section, of a seal ring according to a fourth embodiment of the present application;

FIG. 7 is a schematic perspective view of a mold in a first embodiment of the present application;

FIG. 8 is a schematic view in full section of the mold of FIG. 7;

FIG. 9 is a schematic perspective view of a mold in a second embodiment of the present application;

FIG. 10 is a perspective view of a mold in a third embodiment of the present application;

FIG. 11 is a schematic perspective view of a mold in a fourth embodiment of the present application;

fig. 12 is a schematic perspective view of a mold in a fifth embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The sealing ring is a common component for sealing, and is annular and elastic. The burr can be formed on the outer surface wall during sealing washer injection moulding, and the burr can be got rid of in the later stage. On the one hand, the removal step of the burrs increases the manufacturing cost, and on the other hand, the burrs are difficult to remove cleanly.

As shown in fig. 1-2, the conventional lens 20 includes a lens barrel 21, a lens 23, and a seal ring 22, and the seal ring 22 includes an annular ring 222 and a burr 221 on the annular ring. A sealing ring 22 is connected between a lens 23 at the object side end of the lens 20 and the inner side wall of the lens barrel 21 to prevent foreign matters such as water or dust from entering the lens barrel 21 from the object side of the lens barrel 21. The outer peripheral wall of the lens 23 abuts against the inner ring position of the sealing ring 22, and the inner peripheral wall of the lens barrel 21 abuts against the outer ring position of the sealing ring 22, so that the sealing ring 22 is extruded and deformed at the inner side and the outer side, and the purpose of sealing the gap between the lens 23 and the lens barrel 21 is achieved. The burrs 221 of the sealing ring 22 in the conventional lens 20 are located at the outer ring and the inner ring, respectively. When the burr 221 on the sealing ring 22 is not removed, the sealing effect of the sealing ring 22 is poor, and when the burr 221 is removed, it is generally difficult to perfectly remove the burr 221, so that the residual burr 221 or the defective portion generated when the burr 221 is removed still has an influence on the sealing effect of the sealing ring 22.

Referring to fig. 3 to 6, the present embodiment provides a seal ring 10 for a lens, in which the position of a burr on the seal ring 10 is changed, so that, on one hand, the burr is not removed, and, even if the burr is removed, the sealing performance of the seal ring 10 is not affected by the defect generated after the burr is removed, thereby improving the sealing performance of the seal ring 10. Specifically, the annular ring 100 includes an annular ring 100.

In this embodiment, the annular ring 100 is a portion of the seal ring 10 where no burr is present (or a portion where the burr is removed) in an ideal state. The annular ring 100 is annular, which may be specifically annular (i.e., the annular ring 100 extends around a circle). Of course, in other embodiments, the annular ring 100 may also be an elliptical ring shape (the annular ring 100 extends around an ellipse) or a rectangular ring shape (the annular ring 100 extends around a rectangle). The cross-section of the annular ring 100 perpendicular to the plane passing through the central axis (parallel to the axial direction of the annular ring 100 and passing through the core of the annular ring 100) may be two circular cross-sections, two rectangular cross-sections, two elliptical cross-sections or two cross-sections of other shapes. The present embodiment is illustrated with the cross-section of the annular ring 100 perpendicular to the over-center axis being two circular cross-sections.

In this embodiment, an orthographic projection (a projection in a direction perpendicular to a projection plane) of the annular ring 100 on the first projection plane 200 is a first projection, wherein the first projection plane 200 is perpendicular to an axial direction of the annular ring 100. As shown in fig. 1-2, the first projection is annular and includes a first outer coil wire 210 located at the outer side, and the first outer coil wire 210 is formed by projecting a second outer coil wire 110 on the outer surface wall 140 of the annular ring 100. Burrs are distributed at the second outer ring line of the annular ring in the prior art. It should be noted that, when the cross section of the annular ring 100 perpendicular to the plane passing through the central axis of the annular ring 100 is two rectangular cross sections, the first outer ring line 210 is projected from the outer peripheral wall of the annular ring 100, and in this case, the second outer ring line 110 may be any one of the ring lines on the outer peripheral wall of the annular ring 100.

The outer wall 140 of the annular ring 100 includes a band of burrs that is part of the outer wall 140 of the annular ring 100 and that is covered by the burrs when the band of burrs is lined up. The burr on the seal ring 10 is formed on the burr band during injection molding. That is, the location of the band of burrs is determined based on the location of the burrs on the molded seal ring 10, which were previously located and then located based on the location of the burrs on the annular ring 100. It should be noted that, because the seal ring 10 has a burr when roughly machining, and the seal ring 10 sometimes has a step of removing the burr, that is, there is no burr on the actual sold product, the seal ring 10 mentioned in this application may be a roughly machined product with a burr, or a product after removing the burr. Regardless of whether the burr on the annular ring 100 is removed or not, there is a band of burrs on the annular ring 100 that was formed on the annular ring 100 before the burr was removed.

In this embodiment, the second outer coil 110 is at least partially located outside the burr band, that is, the burr band does not completely cover the second outer coil 110. Such a structure allows at least a portion of the second outer ring wire 110 of the annular ring 100 to be closely attached to other components in the lens without being affected by burrs after the gasket 10 is mounted on the lens, and thus has better sealing performance compared to a structure in which burrs are distributed on the second outer ring wire 110 or a defect is generated after the burrs are removed in the prior art.

The seal ring 10 may be formed by an outer ring and an inner ring, and may be formed by an outer ring and a side ring. But the outer and inner peripheries of the seal ring 10 simultaneously perform a sealing function. In some embodiments, the first projection on the projection plane further includes a first inner coil 220 located at the inner side, and the first inner coil 220 is formed by projecting a second inner coil 120 on the outer surface wall 140 of the seal ring 10. Similarly, when the cross section of the annular ring 100 perpendicular to the plane passing through the central axis of the annular ring 100 is two rectangular cross sections, the first inner coil 220 is formed by projecting the inner peripheral wall of the annular ring 100, and in this case, the second outer coil 110 may be any one of the annular rings on the inner peripheral wall of the annular ring 100. In particular, the second inner coil wire 120 is at least partially located outside the burr band. That is, the burr band does not completely cover the second inner coil wire 120. Such a structure allows at least a portion of the second inner coil wire 120 of the annular ring 100 to be closely attached to other components in the lens after the gasket 10 is mounted to the lens, without being affected by burrs, thereby improving sealing performance.

In one embodiment, the burr band may not overlap the second outer coil wire 110 at all or the second inner coil wire 120 at all. I.e., the second inner coil 120 is located outside the glitch band and/or the second outer coil 110 is located outside the glitch band. Therefore, the sealing ring 10 can be completely free from the influence of burrs after being installed in the lens barrel, and the sealing effect is further improved. Specifically, as shown in fig. 3 to 4, a projection of the annular ring 100 in the second projection plane 300 is a second projection, the second projection plane 300 is parallel to the axial direction of the annular ring 100, the second projection includes a first side line 310 and a second side line 320 arranged opposite to the first side line 310, and both the first side line 310 and the second side line 320 are perpendicular to the axial direction of the annular ring 100. Specifically, the first side edge line 310 is formed by projection of the first side loop line on the annular ring 100, and the second side edge line 320 is formed by projection of the second side loop line 131 on the annular ring 100. The burr band includes a first annular band extending in a circumferential direction of the first side loop line with the first loop line located within the first annular band, and a second annular band 151 extending in a circumferential direction of the second side loop line 131 with the second loop line located within the second annular band 151. This structure enables the burr band on the annular ring 100 not to intersect the second outer coil wire 110 and the second inner coil wire 120 at all.

When no burr band exists at the positions of the second outer ring wire 110 and the second inner ring wire 120 of the annular ring 100, the manufacturing difficulty of the seal ring 10 is high, and the design requirement on the mold is high.

As shown in fig. 7-8, the mold 20 for manufacturing the seal ring 10 includes an outer mold 210 and an inner mold 220, the outer mold 210 includes an inner hole 214, a wall surface of the inner hole 214 is a tapered surface, the tapered surface may be a complete conical surface or a part of the conical surface with a vertex removed, and both the two curved surfaces are defined as tapered surfaces in this embodiment. The tapered surface has a first annular groove, which preferably has a semicircular groove cross section (when the cross section of the sealing ring 10 is circular). The inner mold 220 also includes a tapered portion that mates with the inner bore 214, the tapered portion includes a tapered surface that mates with the inner wall of the inner bore 214, and the tapered surface of the tapered portion has a second molding groove 223 that cooperates with the inner bore 214 of the outer mold 210 to define an injection molding cavity for molding the gasket 10. When the seal ring 10 is injection-molded by the mold, burrs on the seal ring 10 can be deviated from the second inner coil wire 120 and the second outer coil wire 110 of the annular ring 100 at the time of mold opening. And the degree of deviation varies with the degree of inclination of the tapered surface of the inner bore 214.

When the inclination angle of the tapered surface of the inner mold 220 with respect to the central axis of the inner hole 214 is large (i.e., when the hole wall of the inner hole 214 is close to a flat surface), the inner mold 220 and the outer mold 210 can be released from the mold by the elasticity of the seal ring 10 because of the elasticity of the seal ring 10. In this way, the outer mold 210 and the inner mold 220 do not need to be disassembled into a plurality of sub-molds, and burrs can be prevented from being generated at the outer ring position of the molded sealing ring 10.

The mold in the embodiment has the advantages that the two mutually matched conical surfaces are required to be processed, the groove body is required to be processed on the conical surfaces, the processing precision requirement is high, and the processing difficulty is high. Therefore, in order to reduce the processing difficulty, the burr may be allowed to exist at portions of the second outer coil wire 110 and the second inner coil wire 120 of the annular ring 100.

As shown in fig. 5, in one embodiment, the burr band may further include two outer arc bands 152 disposed around the outer circumference of the annular ring 100 in addition to the first annular band and the second annular band 151, one end of each of the outer arc bands 152 is connected to the first annular band, the other end is connected to the second annular band 151, and the two outer arc bands 152 are disposed at two ends of the annular ring 100. Since the first and second annular bands 151 and 110 overlap less, the sealing effect of the sealing ring 10 is less affected, and the outer arc band 152 is present, so that the sealing ring 10 is easily processed.

As shown in fig. 9, the present embodiment further provides a mold 20 for processing the above-mentioned ground sealing ring 10, wherein the mold 20 includes an outer mold 210 and an inner mold 220. The outer mold 210 includes an inner hole 214, and a first annular groove 213 is provided on an inner circumferential wall (in a cylindrical surface) of the inner hole 214 and arranged along a circumferential direction of the inner circumferential wall. The inner mold 220 includes a peripheral wall, the peripheral wall of the inner mold 220 is matched with the inner peripheral wall of the outer mold 210, a second annular groove 223 arranged along the circumferential direction of the peripheral wall is arranged on the peripheral wall of the inner mold 220, and the first annular groove 213 and the second annular groove 223 jointly define an injection molding cavity for injection molding of the seal ring 10. Meanwhile, the outer mold 210 comprises a first sub-mold 211 and a second sub-mold 212, the first sub-mold 211 comprises a first half arc wall, the second sub-mold 212 comprises a second half arc wall, the inner peripheral wall of the inner hole 214 is formed by combining the first half arc wall and the second half arc wall, a first forming groove is formed in the first half arc wall, a second forming groove 223 is formed in the second half arc wall, and the first annular groove 213 is formed by combining the first forming groove and the second forming groove 223.

Of course, in order to facilitate the mold opening, the outer mold 210 may be formed by combining three or more sub-molds, at this time, the burr band correspondingly includes three or more outer arc bands 152, and each outer arc band 152 is arranged in a circular array with the central axis of the annular ring 100 as the axis.

In one embodiment, the seal ring 10 may also have the second outer coil 110 completely non-coincident with the burred band, while portions of the second inner coil 120 are coincident with the burred band. As shown in fig. 6, the burred belt further includes two inner arc belts 153 disposed around the inner circumference of the annular ring 100, one ends of the inner arc belts 153 are respectively connected to the first annular belt, the other ends are respectively connected to the second annular belt 151, and the two inner arc belts 153 are oppositely disposed at both ends of the annular ring 100.

As shown in fig. 10, the present embodiment further provides a mold 20 for manufacturing the sealing ring 10, wherein the mold 20 includes an outer mold 210 and an inner mold 220. The outer mold 210 includes an inner hole 214, and a first annular groove 213 is provided on an inner circumferential wall (in a cylindrical surface) of the inner hole 214 and arranged along a circumferential direction of the inner circumferential wall. The inner mold 220 includes a peripheral wall, the peripheral wall of the inner mold 220 is matched with the inner peripheral wall of the outer mold 210, a second annular groove 223 arranged along the circumferential direction of the peripheral wall is arranged on the peripheral wall of the inner mold 220, and the first annular groove 213 and the second annular groove 223 jointly define an injection molding cavity for injection molding of the seal ring 10. Inner mold 220 includes third mould 222 and fourth mould 221, and third mould 222 includes half arc wall of third, and fourth mould 221 includes half arc wall of fourth, and inner mold 220's periphery wall is formed by half arc wall of third and half arc wall of fourth combination, is provided with the third in the half arc wall of third and becomes the groove, is provided with the fourth in the half arc wall of fourth and becomes the groove, and second ring channel 223 is formed by third one-tenth groove and fourth one-tenth groove combination.

When the inner mold 220 is divided into a plurality of sub-molds, a gap exists between each sub-mold after combination, so that each sub-mold can be retracted inwards (i.e. each sub-mold with a gap is tightly attached) during demolding. Thereby facilitating demoulding. When the sealing ring 10 is injected, the plugging part can be inserted into the gap between the sub-molds, so that the complete injection molding of the sealing ring 10 is ensured. When demoulding, the plugging part can be detached firstly, and then all the sub-moulds are retracted inwards.

Certainly, in order to facilitate the mold opening, the inner mold 220 may also be formed by combining three or more sub-molds, at this time, the burr band correspondingly includes three or more inner arc bands 153, and each inner arc band 153 is arranged in a circular array with the central axis of the annular ring 100 as the axis.

In one embodiment, the seal ring 10 may further include a portion of each of the second outer ring 110 and the second inner ring 120 coinciding with a burred band, wherein the burred band on the annular ring 100 includes both the outer arc band 152 and the inner arc band 153. Similarly, as shown in fig. 11, the outer mold 210 of the mold 20 for manufacturing the sealing ring 10 includes two or more sub-molds, and the inner mold 220 also includes two or more sub-molds. The outer mold 210 includes an inner hole 214, and a first annular groove 213 is provided on an inner circumferential wall (in a cylindrical surface) of the inner hole 214 and arranged along a circumferential direction of the inner circumferential wall. The inner mold 220 includes a peripheral wall, the peripheral wall of the inner mold 220 is matched with the inner peripheral wall of the outer mold 210, a second annular groove 223 arranged along the circumferential direction of the peripheral wall is arranged on the peripheral wall of the inner mold 220, and the first annular groove 213 and the second annular groove 223 jointly define an injection molding cavity for injection molding of the seal ring 10.

As shown in fig. 12, in order to improve the processing efficiency, the present embodiment further provides a method for processing the mold 20 in any of the above embodiments, the mold includes an outer mold 210 and an inner mold 220, the outer mold 210 includes an inner hole 214, and a first annular groove 213 arranged along a circumferential direction of the inner wall is provided on an inner circumferential wall (in a cylindrical surface) of the inner hole 214. The inner mold 220 includes a peripheral wall, the peripheral wall of the inner mold 220 is matched with the inner peripheral wall of the outer mold 210, a second annular groove 223 arranged along the circumferential direction of the peripheral wall is arranged on the peripheral wall of the inner mold 220, and the first annular groove 213 and the second annular groove 223 jointly define an injection molding cavity for injection molding of the seal ring 10. A plurality of first annular grooves 213 are provided on the inner peripheral wall of the inner bore 214, and the first annular grooves 213 are arranged in a row in a direction parallel to the bore axis. The outer peripheral wall of the inner mold 220 is provided with a plurality of second annular grooves 223, and each second annular groove 223 and each first annular groove 213 define an injection molding cavity in a one-to-one correspondence mode.

The second aspect of the present application further provides a lens barrel including the sealing ring 10 in any of the above embodiments, and a lens group. The lens barrel has a cavity, and the sealing washer 10 sets up in holding the cavity. The lens group is arranged in the accommodating cavity.

The third aspect of the present application further provides a camera module, which includes the lens and the imaging chip in any of the above embodiments, wherein the imaging chip is disposed at the image side end of the lens, and the imaging chip is configured to receive light passing through the lens group and perform imaging processing.

The fourth aspect of the present application further provides an electronic device, which includes the above-mentioned camera module. The electronic device may be a mobile phone, a tablet, a computer, or other device with a shooting function.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (15)

1. A seal ring for a lens, comprising:

the orthographic projection of the annular ring on a first projection surface is a first projection, the first projection surface is perpendicular to the axial direction of the annular ring, the first projection is annular and comprises a first outer ring line positioned on the outer side, and the first outer ring line is formed by projecting a second outer ring line on the outer surface wall of the annular ring;

the outer surface wall of the annular ring comprises a burr belt, burrs are formed on the burr belt when the sealing ring is molded, and at least part of the second outer ring line is located outside the burr belt.

2. The seal ring of claim 1,

the first projection further comprises a first inner coil wire positioned on the inner side, and the first inner coil wire is formed by projecting a second inner coil wire on the outer surface wall;

the second inner coil wire is at least partially located outside the burr band.

3. The seal ring according to claim 2,

the second inner loop wire is positioned outside the burr band; and/or

The second outer coil line is located outside the burr band.

4. The seal ring of claim 1,

the orthographic projection of the annular ring in a second projection plane is a second projection, the second projection plane is parallel to the axial direction of the annular ring, the second projection comprises a first side line and a second side line arranged opposite to the first side line, and the first side line and the second side line are both perpendicular to the axial direction of the annular ring;

the first side edge line is formed by projection of a first side loop line on the annular ring, and the second side edge line is formed by projection of a second side loop line on the annular ring;

the burr area includes first endless belt and second endless belt, first endless belt follows the circumference of first side loop line extends just first side loop line is located in the first endless belt, the second endless belt follows the circumference of second side loop line extends just second side loop line is located in the second endless belt.

5. The seal ring according to claim 4,

burr area still includes two windings the outer arc area that the periphery of annular ring was arranged, the one end in outer arc area is equallyd divide and is do not connected first annular area, the other end are equallyd divide and do not connect the second annular area, two outer arc area relative arrangement in the both ends of annular ring.

6. The seal ring according to claim 5,

the burr area still includes two windings the inner arc area that the inner periphery of annular circle was arranged, the one end in inner arc area is equallyd divide and is connected respectively first annular area, the other end are equallyd divide and are connected the second annular area, two inner arc area relative arrangement in the both ends of annular circle.

7. The seal ring of claim 6,

the burr belt comprises three or more than three outer arc belts arranged around the periphery of the annular ring, one end of each outer arc belt is respectively connected with the first annular belt, the other end of each outer arc belt is respectively connected with the second annular belt, and the outer arc belts are arranged in a circular array by taking the central axis of the annular ring as an axis;

the burr area includes three or more than three inner arc area that arrange around the inner periphery of annular circle, and one end of each inner arc area is equallyd divide and is connected respectively first annular area, and the other end is equallyd divide and is connected respectively the second annular area, and each inner arc area uses the axis of annular circle is the axis and is the circular array and arranges.

8. A lens barrel characterized by comprising:

the seal ring of any one of claims 1 to 7;

the lens cone is provided with an accommodating cavity, and the sealing ring is arranged in the accommodating cavity;

the lens group is arranged in the accommodating cavity.

9. The utility model provides a module of making a video recording which characterized in that includes:

the lens barrel as claimed in claim 8;

and the imaging chip is arranged at the image side end of the lens and used for receiving the light rays passing through the lens group and carrying out imaging processing.

10. An electronic device comprising the camera module of claim 9.

11. A mold for processing the seal ring of claim 1, comprising:

the outer die comprises an inner hole, wherein a first annular groove arranged along the circumferential direction of the inner circumferential wall is formed in the inner circumferential wall of the inner hole;

the inner die comprises an outer peripheral wall, and a second annular groove arranged along the circumferential direction of the outer peripheral wall is formed in the outer peripheral wall;

the first annular groove and the second annular groove jointly define an injection molding cavity for injection molding of the sealing ring.

12. The mold of claim 11,

outer mould includes first branch mould and second branch mould, first branch mould includes first half arc wall, the second divides the mould to include second half arc wall, the internal perisporium in inside hole by first half arc wall and second half arc wall combination forms, be provided with first shaping groove on the first half arc wall, be provided with second shaping groove on the second half arc wall, first ring channel by first shaping groove and second shaping groove combination forms.

13. The mold of claim 11,

the inner mold comprises a third parting mold and a fourth parting mold, the third parting mold comprises a third half arc wall, the fourth parting mold comprises a fourth half arc wall, the peripheral wall of the inner mold is composed of the third half arc wall and the fourth half arc wall, a third forming groove is arranged on the third half arc wall, a fourth forming groove is arranged on the fourth half arc wall, and the second annular groove is composed of the third forming groove and the fourth forming groove.

14. The mold of claim 11,

interior mould includes third branch mould and fourth branch mould, the third branch mould includes first circumference wall, the fourth branch mould includes the second circumference wall, the periphery wall of interior mould by first circumference wall and the second circumference wall is followed the axial combination of first circumference wall forms, first circumference wall is close to the tip of second circumference wall is provided with third forming groove, the second circumference wall is close to be provided with fourth forming groove on the tip of first circumference wall, the second ring channel by third forming groove and fourth forming groove combination forms.

15. The mold of claim 11,

a plurality of first annular grooves are arranged on the inner peripheral wall of the inner hole, and the first annular grooves are arranged in a direction parallel to the axis of the hole;

the outer peripheral wall of the inner die is provided with a plurality of second annular grooves, and the second annular grooves correspond to the first annular grooves one by one to jointly define the injection molding cavity.

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