CN219496779U - Vehicle-mounted camera and lens module thereof - Google Patents

Abstract

The embodiment of the utility model provides a lens module, which comprises a lens barrel, a lens body assembled at one end of the lens barrel, a cap ring for locking the lens body on the lens barrel and a heating module, wherein the heating module comprises a heating plate and a wire which is led out from the heating plate to be correspondingly connected with a power supply, the outer side wall of the lens barrel is outwards protruded and is provided with a convex ring around the central axis of the lens barrel, the outer ring surface of the convex ring is also penetrated to form a groove for the wire to penetrate, the heating plate is attached to the outer side wall between the outer end surface of the lens barrel and the convex ring, and the cap ring is sleeved at the outer end part of the lens barrel and covers the heating plate, one end of the cap ring is abutted against the outer end surface of the lens body, and the other end of the cap ring is fixed with the convex ring. According to the embodiment of the utility model, the heating plate is arranged on the outer side surface of the lens barrel in a surrounding manner, so that the heating effect of the lens body is ensured, and the imaging area of the light incident surface is not interfered; the lead can be routed along the outer side wall of the lens barrel to reduce the structural complexity of the lens barrel, and the cap ring is sleeved on the outer side of the lens barrel to ensure the relative fixation of the heating plate, the lead and the lens barrel, so that the whole structure is simple and the manufacturing and the assembly are convenient. The application also provides a vehicle-mounted camera.

Description

Vehicle-mounted camera and lens module thereof

Technical Field

The embodiment of the utility model relates to the technical field of automobile accessories, in particular to a vehicle-mounted camera and a lens module thereof.

Background

Compared with the common camera, the vehicle-mounted camera can meet basic imaging quality requirements and adapt to more changeable and severe use environments. The lens surface icing caused by the ultralow temperature environment and the lens surface fogging under the cold-hot alternating environment are two common factors greatly influencing the shooting performance of the vehicle-mounted camera, so that the conventional vehicle-mounted camera can be correspondingly assembled with the heating module at the lens module to cope with the phenomena of icing and fogging.

The existing lens module comprises a lens cone, a lens body assembled in an inner cavity at one end of the lens cone and a heating module used for heating the lens body, wherein the heating module comprises a heating piece and a wire, the heating piece is attached to a non-imaging area of the periphery of a light inlet surface of the lens body in a surrounding mode, the wire is led out of the heating piece to be connected with a power supply, a wiring hole is formed in the wall of the lens cone, and the wire penetrates through the wiring hole and is electrically connected with corresponding power supply voltage.

In the implementation process, the inventor finds that, because the heating element is circumferentially attached to the non-imaging area near the periphery of the light incident surface of the lens body, the non-imaging area is generally narrower, the size of the heating element is limited, so that the heating power of the heating element and the contact surface of the heating element and the lens body are very limited, the heating efficiency of the heating element on the lens body is greatly reduced, if the width of the non-imaging area is increased, the overall size of the lens module is increased, the miniaturization of the vehicle-mounted camera is not facilitated, and wiring holes are required to be formed in the inner surface of the barrel wall of the lens barrel, so that the structure is relatively complex, and the difficulty in manufacturing and subsequent assembly is relatively high.

Disclosure of Invention

The technical problem to be solved by the embodiment of the utility model is to provide the lens module, which has a simple structure and is convenient to manufacture and assemble.

The technical problem to be further solved by the embodiment of the utility model is to provide the vehicle-mounted camera which is simple in structure and convenient to manufacture and assemble.

In order to solve the technical problems, the embodiment of the utility model provides the following technical scheme: the utility model provides a lens module, includes the lens cone that the middle part has the through-hole, assemble in the through-hole of lens cone and from the lens body that the drill way of lens cone outer end exposes, assemble in the outer end of lens cone in order to lock the lens body in cap ring and the heating module that is used for heating on the lens cone, the heating module includes the heating plate and follows draw forth in order to connect power supply's wire on the heating plate correspondingly, the lens cone lateral wall with the outer terminal surface department of lens cone is formed with the evagination and encircles the bulge loop that the axis set up of lens cone is located at predetermined distance, still be formed with on the outer anchor ring of bulge loop in the axis orientation runs through the recess of bulge loop, the heating plate is cyclic annular and laminating in on the lateral wall between the outer terminal surface of lens cone and the bulge loop, the wire is worn out from the recess, cap ring cover is located the outer terminal portion of lens cone and cover the heating plate with one end support the outer terminal surface of lens body and the other end is fixed mutually with the bulge loop.

Further, the cap ring comprises a connecting cylinder sleeved at the outer end part of the lens barrel and a ring edge bent inwards from the outer end edge of the connecting cylinder and crimped at the position, close to the edge, of the outer end face of the lens body, an inner concave thread is further arranged at one end, far away from the ring edge, of the inner cylinder wall of the connecting cylinder, and the outer ring face of the convex ring is formed with a first outer thread in threaded connection with the inner thread correspondingly.

Further, the heating plate is a closed ring body connected end to end and is tightly clamped on the outer side wall of the lens cone through interference fit with the lens cone.

Further, the heating plate is a C-shaped ring body disconnected from the head to the tail and is fixed on the outer side wall of the lens cone by means of heat conduction adhesive.

Further, the outer side wall of one end of the lens cone, which is far away from the cap ring, is also provided with a step ring which is coaxial with the lens cone and is used for being connected and fixed with a shell of the vehicle-mounted camera, the step ring comprises a threaded section which is close to the cap ring and is provided with a second external thread on the outer ring surface and a limit section which is far away from the cap ring and is thicker than the threaded section, one end of the lens cone, which is used for assembling the lens body, penetrates out of a corresponding mounting hole on the shell and is positioned by abutting a joint step surface between the limit section and the threaded section on the inner wall of the shell, and a locking nut is correspondingly screwed on the threaded section to lock the lens cone on the shell.

Further, a wiring groove for the corresponding passing of the lead is also formed in the outer ring surface of the stepped ring.

Further, the grooves and the wiring grooves are filled with sealant for positioning the wires and sealing the grooves and the wiring grooves correspondingly.

Further, the wire is a flexible flat cable.

On the other hand, in order to solve the above technical problems, the embodiment of the present utility model provides the following solutions: a vehicle-mounted camera, comprising a shell and a lens module assembled at one end of the shell, wherein the lens module is the lens module according to any one of the above.

Further, the vehicle-mounted camera further comprises an imaging circuit board and a power supply circuit board which are assembled in the shell, wherein the imaging circuit board is opposite to the inner end of the lens module through a photosensitive chip arranged on a side plate surface, two power supply ports are arranged on the power supply circuit board, and the imaging circuit board and the wires are electrically connected with the two power supply ports in one-to-one correspondence.

After the technical scheme is adopted, the embodiment of the utility model has at least the following beneficial effects: according to the embodiment of the utility model, the heating plate in the heating module is an annular heating plate arranged around the outer side wall of the lens barrel, and the heating plate transfers heat to the lens body through the lens barrel after being electrified and heated, so that the heating effect of the lens body is ensured, the imaging area of the light incident surface of the lens body is not interfered, and the lens module is more compatible with the existing lens module structure; in addition, the outer side wall of the lens barrel is provided with a convex ring which protrudes outwards and surrounds the central axis of the lens barrel at a preset distance from the outer end face of the lens barrel, the heating plate is attached to the outer side wall between the outer end face of the lens barrel and the convex ring, a cap ring is sleeved on the outer end of the lens barrel, the heating plate is correspondingly covered by the outer end of the lens barrel, one end of the heating plate is abutted against the outer end face of the lens body, the other end of the heating plate is fixed with the convex ring, the cap ring sleeve is matched with the outer side wall of the lens barrel to clamp and fix the heating plate, the convex ring is used for limiting the heating plate in the axial direction, in addition, a groove penetrating through the convex ring in the central axis direction is formed in the outer ring face of the convex ring, the groove can be used for a lead led out from the heating plate to pass through and be electrically connected with a corresponding power supply, meanwhile, the groove is matched with the cap ring to limit and fix the lead, the structural complexity of the lens barrel can be remarkably reduced by adopting an external wiring mode, the manufacturing and assembling difficulty of the lens module can be improved, and the production efficiency can be facilitated.

Drawings

Fig. 1 is a schematic perspective view illustrating a disassembled state of a lens module according to an alternative embodiment of the utility model.

Fig. 2 is a schematic perspective view of a heating module according to another alternative embodiment of the lens module of the present utility model.

Fig. 3 is a schematic overall perspective view of an alternative embodiment of the vehicle camera of the present utility model.

Fig. 4 is a schematic perspective view illustrating a disassembled state of an alternative embodiment of the vehicle camera according to the present utility model.

Fig. 5 is a schematic cross-sectional view of an alternative embodiment of the vehicle camera of the present utility model taken along the wiring slot.

Detailed Description

The present application is described in further detail below with reference to the drawings and specific examples. It should be understood that the following exemplary embodiments and descriptions are only for the purpose of illustrating the utility model and are not to be construed as limiting the utility model, and that the embodiments and features of the embodiments herein may be combined with one another without conflict.

As shown in fig. 1-2, an alternative embodiment of the present utility model provides a lens module 1, including a lens barrel 10 having a through hole 101 in the middle, a lens body 12 assembled in the through hole 101 of the lens barrel 10 and exposed from an aperture at the outer end of the lens barrel 10, a cap ring 16 assembled at the outer end of the lens barrel 10 to lock the lens body 12 on the lens barrel 10, and a heating module 14 for heating the lens body 12, wherein the heating module 14 includes a heating plate 141 and a wire 143 led out from the heating plate 141 to be connected to a power supply correspondingly, a convex ring 103 protruding outwardly from the outer end surface of the lens barrel 10 and disposed around a central axis of the lens barrel 10 is formed on the outer annular surface of the convex ring 103 in the central axis direction, the heating plate 141 is annular and is attached to an outer side wall between the outer end surface of the lens barrel 10 and the convex ring 103, the wire is protruded from the cap ring 105 and is pressed against the outer end surface of the lens barrel 10 by the cap ring 143.

The embodiment of the utility model sets the heating plate 141 in the heating module 14 as the annular heating plate 141 arranged around the outer side wall of the lens barrel 10, and the heating plate 141 transfers heat to the lens body 12 through the lens barrel 10 after being electrified and heated, thereby ensuring the heating effect of the lens body 12, avoiding interference to the imaging area of the light incident surface 121 of the lens body 12 and being more compatible with the structure of the existing lens module 1; in addition, a convex ring 103 protruding outwards and surrounding the central axis of the lens barrel 10 is formed on the outer side wall of the lens barrel 10 at a predetermined distance from the outer end surface of the lens barrel 10, the heating plate 141 is attached to the outer side wall between the outer end surface of the lens barrel 10 and the convex ring 103, a cap ring 16 is sleeved on the outer side wall of the lens barrel 10, the outer end of the lens barrel 10 correspondingly covers the heating plate 141 and abuts against the outer end surface of the lens body 12 at one end and is fixed with the convex ring 103 at the other end, the cap ring 16 is sleeved with the outer side wall of the lens barrel 10 to clamp and fix the heating plate 141 in a matched manner, the convex ring 103 is used for limiting the heating plate 141 in the axial direction, a groove 105 penetrating through the convex ring 103 in the central axis direction is formed on the outer ring surface of the convex ring 103, the groove 105 can be used for a wire 143 led out of the heating plate 141 to penetrate through and be electrically connected with a corresponding power supply, and meanwhile, the groove 105 is matched with the cap ring 16 to realize limiting and fixing of the wire 143, and the wire is capable of reducing the complexity of manufacturing the lens barrel 10 by adopting an external wiring mode, and manufacturing the lens module 1. In a specific implementation process, the heating plate 141 may be a flexible FPC heating plate with a thickness of 0.1-0.2mm, and in order to improve the heat conducting performance, the lens barrel 10 may also be made of a metal material with a good heat conducting effect.

In yet another alternative embodiment of the present utility model, as shown in fig. 3, the cap ring 16 includes a connecting cylinder 163 sleeved on the outer end of the lens barrel 10, and a ring edge 161 bent inwards from the outer end edge of the connecting cylinder 163 to be crimped at the edge of the outer end face of the lens body 12, and an inner concave internal thread 1630 is further provided on the inner cylinder wall of the connecting cylinder 163 at the end far from the ring edge 161, and the outer ring surface of the convex ring 103 is formed with a first external thread 1030 screwed corresponding to the internal thread. The cap ring 16 in this embodiment includes a connecting cylinder 163 sleeved on the outer end of the lens barrel 10 and a ring edge 161 bent inwards from the outer end edge of the connecting cylinder 163, and the inner wall of the connecting cylinder 163 is provided with an internal thread 1630 to be screwed and fixed with the first external thread 1030 of the outer ring surface of the convex ring 103, and the ring edge 161 is correspondingly pressed and connected to the edge of the outer end surface of the lens body 12, so that the fixed connection between the lens body 12 and the lens barrel 10 is realized, the sealing of the seam between the lens barrel 10 and the connecting cylinder 163, in which the heating plate 141 is assembled, is avoided, moisture and dust from entering the seam outside one end of the lens body 12 is avoided, and the stability of the heating performance of the heating plate 141 is ensured.

In another alternative embodiment of the present utility model, as shown in fig. 1, the heating plate 141 is a closed ring body connected end to end and is tightly fastened to the outer side wall of the lens barrel 10 by interference fit with the lens barrel 10. In this embodiment, the heating plate 141 is a closed ring body connected end to end, and the heating plate 141 is reasonably arranged to have an inner diameter to be in interference fit with the lens barrel 10, so that the heating plate is finally fastened on the outer side wall of the lens barrel 10, the connection stability is good, and the assembly operation is simple and convenient.

In yet another alternative embodiment of the present utility model, as shown in fig. 1 and 3-5, the heating plate 141 is a C-shaped ring body broken between the ends and is adhered and fixed to the outer sidewall of the lens barrel 10 by means of a heat conductive adhesive (not shown). In the embodiment, the heating plate 141 is a C-shaped ring heating plate with the ends disconnected, so that the deformation of the heating plate 141 is increased, and the lens barrels 10 with different thicknesses can be adapted by adjusting the radian of the heating plate 141, so that the compatibility is better; after the heating plate 141 is properly matched with the outer side wall of the lens barrel 10, the heating plate 141 and the lens barrel 10 are adhered and fixed by means of heat conducting glue, so that the heat conducting effect of the heating plate is enhanced.

In another alternative embodiment of the present utility model, as shown in fig. 1 and 5, an outer side wall of one end of the lens barrel 10 away from the cap ring 16 is further provided with a stepped ring 18 coaxial with the lens barrel 10 and used for being fixedly connected with the housing 2 of the vehicle camera, the stepped ring 18 comprises a threaded section 181 close to the cap ring 16 and provided with a second external thread 1810 on an outer ring surface, and a limit section 183 far away from the cap ring 16 and thicker than the threaded section 181, one end of the lens barrel 10 for assembling the lens body 12 penetrates from a corresponding mounting hole 21 on the housing 2 and is positioned by abutting a joint step surface 185 between the limit section 183 and the threaded section on the inner wall of the housing 2, and a locking nut 11 is correspondingly screwed on the threaded section 181 to lock the lens barrel 10 on the housing 2. In this embodiment, the stepped ring 18 is disposed on the outer side wall of the lens barrel 10 and is connected and fixed with the housing 2 of the vehicle-mounted camera, the stepped ring 18 includes a threaded section 181 with a second external thread 1810 on an outer ring surface, and a limit section 183 connected to the end of the threaded section 181 and having a diameter larger than that of the threaded section 181, the lens barrel 10 passes through the housing 2 and is positioned by abutting the engagement step surface 185 between the limit section 183 and the threaded section on the inner wall of the housing 2, the positioning operation is relatively simple and accurate, and the lens barrel 10 is locked on the housing 2 by corresponding to the threaded section through the lock nut 11, so that the assembly operation is simple and the connection is stable.

In yet another alternative embodiment of the present utility model, as shown in fig. 1, 4 and 5, the outer ring surface of the stepped ring 18 is further provided with a wire groove 187 through which the wire 143 passes correspondingly. In this embodiment, the wiring groove 187 is formed on the outer ring surface of the stepped ring 18 to allow the wires 143 to pass through, so as to effectively guide and limit the wiring direction of the wires 143, and the locking nut 11 and the housing 2 sleeved outside the stepped ring 18 limit the radial offset of the wires 143, so as to ensure the fitting degree of the wires 143 and the outer side wall of the lens barrel 10, and facilitate the packaging and use of the subsequent vehicle-mounted cameras.

In yet another alternative embodiment of the present utility model, as shown in fig. 4 and 5, the grooves 105 and the wiring grooves 187 are also filled with a sealant 5 that positions the wires 143 and correspondingly seals the grooves 105 and the wiring grooves 187. In this embodiment, the sealing between the cap ring 16 and the lens barrel 10 and the sealing between the housing 2 and the lens module 1 are achieved by filling the sealant 5 in the groove 105 and the wiring groove 187, so that the waterproof performance of the vehicle-mounted camera is improved. In addition, the wires 143 penetrating the grooves 105 and the wiring grooves 187 are correspondingly sealed in the sealant 5, so that the connection between the wires 143 and the corresponding power supply is prevented from being broken due to the accidental pulling of the parts of the wires 143 exposed outside the lens barrel 10 during use, and the electrical connection stability of the heating module 14 is ensured.

In yet another alternative embodiment of the present utility model, as shown in fig. 4 and 5, the conductive lines 143 are flexible flat cables. In this embodiment, the soft flat cable 143 is used as a conductive wire, which is thin and easy to bend, so that the installation operation of the traveling cable is more convenient to attach to the wall of the groove 105, and the overall aesthetic property of the lens module 1 is improved.

On the other hand, as shown in fig. 1-5, in another embodiment of the present utility model, a vehicle-mounted camera includes a housing 2 and a lens module 1 assembled at one end of the housing 2, wherein the lens module 1 is the lens module 1 according to any of the above embodiments. According to the embodiment, the heating plate 141 is attached to the outer side wall of the lens barrel 10, the conducting wire 143 is attached to the outer side wall of the lens barrel 10 and is connected with the lens module 1 of the corresponding power supply, so that the problems that the size of the lens is increased due to the fact that a heating element is arranged in a non-imaging area on the light incident surface 121 of the lens body 12 by the traditional lens module 1, and the manufacturing and assembling are inconvenient due to the fact that the conducting wire 143 is arranged on the inner wall of the lens barrel 10 are avoided, the structural design of the lens module 1 is greatly simplified, and the subsequent assembly of the vehicle-mounted camera is more convenient.

In yet another alternative embodiment of the present utility model, as shown in fig. 4 and 5, the vehicle-mounted camera further includes an imaging circuit board 3 and a power supply circuit board 4, both assembled in the housing 2, the imaging circuit board 3 is disposed opposite to the inner end of the lens module 1 with a photosensitive chip 30 disposed on a side plate surface, the power supply circuit board 34 is provided with two power supply ports 41, and the imaging circuit board 3 and the wires 143 are electrically connected to the two power supply ports 41 in a one-to-one correspondence. In this embodiment, the imaging circuit board 3 and the power supply circuit board 4 are respectively arranged, and the photosensitive chip 30 on the imaging circuit board 3 is opposite to the inner end of the lens module 1, and the two power supply ports 41 on the power supply circuit board 4 are respectively connected with the imaging circuit board 3 and the tail ends of the wires 143 led out from the heating plate 141, so that an independent external power supply is not required to be arranged for the heating plate 141, the structure of the vehicle-mounted camera is further simplified, and the size of the vehicle-mounted camera is reduced. In the specific implementation process, the power supply circuit board 4 may also be provided with a corresponding control circuit corresponding to the heating module 14 to control the heating state of the heating plate 141, so as to realize automatic control of heating of the lens module 1; the end of the flexible flat cable 143 may be correspondingly connected to the power supply port 41 by using a golden finger.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many changes may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are all within the scope of the present utility model.

Claims (10)

1. The utility model provides a lens module, includes the lens cone that the middle part has the through-hole, assemble in the through-hole of lens cone and from the lens body that the drill way of lens cone outer end exposes, assemble in the outer end of lens cone in order to lock the lens body in on the lens cone the cap ring and be used for heating the heating module of lens body, the heating module includes the heating plate and follows draw forth in order to connect power supply's wire correspondingly on the heating plate, its characterized in that, the lens cone lateral wall is in the department with the outer terminal surface of lens cone keeps away predetermined distance and takes shape the evagination and encircle the bulge loop that the axis of lens cone set up, still be formed with on the outer anchor loop of bulge loop in the axis direction runs through the recess of bulge loop, the heating plate is cyclic annular and laminating in the outer terminal surface of lens cone with on the lateral wall between the bulge loop, the wire is worn out from the recess, the cap ring cover is located the lens cone outer terminal portion and cover the heating plate with one end support the outer terminal surface of lens body and the other end is fixed with the bulge loop.

2. The lens module as claimed in claim 1, wherein the cap ring comprises a connecting cylinder sleeved at the outer end of the lens barrel and a ring edge bent inwards from the outer end edge of the connecting cylinder to be crimped at the position close to the edge of the outer end surface of the lens body, an inner concave thread is further arranged at one end of the inner cylinder wall of the connecting cylinder away from the ring edge, and the outer ring surface of the convex ring is formed with a first outer thread correspondingly screwed with the inner thread.

3. The lens module as claimed in claim 1, wherein the heating plate is a closed ring body connected end to end and is fastened to the outer side wall of the lens barrel by interference fit with the lens barrel.

4. The lens module of claim 1, wherein the heating plate is a C-shaped ring body broken between the ends and is attached to the outer side wall of the lens barrel by means of a heat-conductive adhesive.

5. The lens module of claim 1, wherein an outer side wall of one end of the lens barrel far away from the cap ring is further provided with a stepped ring which is coaxial with the lens barrel and is used for being connected and fixed with a shell of the vehicle-mounted camera, the stepped ring comprises a threaded section which is close to the cap ring and is provided with second external threads on an outer ring surface and a limiting section which is far away from the cap ring and is thicker than the threaded section, one end of the lens barrel for assembling the lens body penetrates out of a corresponding mounting hole on the shell and is positioned by abutting a joint step surface between the limiting section and the threaded section on the inner wall of the shell, and a locking nut is correspondingly screwed on the threaded section to lock the lens barrel on the shell.

6. The lens module as claimed in claim 5, wherein the outer ring surface of the step ring is further provided with a wiring groove through which the lead wire passes.

7. The lens module of claim 6, wherein the grooves and the wiring grooves are also filled with a sealant that positions the wires and seals the grooves and the wiring grooves correspondingly.

8. The lens module of claim 1, wherein the conductive lines are flexible flat cables.

9. A vehicle-mounted camera comprising a housing and a lens module assembled at one end of the housing, wherein the lens module is a lens module according to any one of claims 1-8.

10. The vehicle-mounted camera of claim 9, further comprising an imaging circuit board and a power supply circuit board which are both assembled in the shell, wherein the imaging circuit board is arranged opposite to the inner end of the lens module by a photosensitive chip arranged on a side plate surface, two power supply ports are arranged on the power supply circuit board, and the imaging circuit board and the wires are electrically connected with the two power supply ports in a one-to-one correspondence.