CN217113026U - Lens mounting structure - Google Patents

Abstract

The utility model discloses a camera lens mounting structure, include the lens cone and connect in the distolateral dustcoat spare of lens cone, be provided with the portion of leaning on of holding that is used for laying the lens on the lens cone, be provided with the pressure that is used for pushing down the lens along the lens cone axial on the dustcoat spare and attach the portion, be provided with block portion one on the dustcoat spare, be provided with block portion two on the lens cone, block portion one and the cooperation of block portion two joints so that press to attach the portion and hold and lean on the portion with the lens centre gripping between the two, be provided with the logical light mouth that exposes the lens on the dustcoat spare. Lens mounting structure be used for fixed lens mounting and outward appearance piece integrated as an organic whole, compromise fixedly, dustproof and outward appearance, assembly efficiency is high, the situation that the lens was taken along can not appear in the assembling process, guarantee lens assembly precision is favorable to ensureing good projection effect.

Description

Lens mounting structure

Technical Field

The utility model relates to a projection lens technical field especially relates to a camera lens mounting structure.

Background

The lens is an important component of a projector, wherein the G01 lens is the lens farthest from a DMD (digital micromirror device) and the lens closest to the outside, which plays a very important role in the quality of the image formed by the lens and also has a certain appearance effect. The G01 lens is usually assembled on the lens barrel through a fixing piece such as a lock ring, so that the G01 lens is always in a stable and reliable state, and the projection analysis effect is prevented from being influenced. A mounting for assembling the lens among the prior art is inconvenient to use, and assembly efficiency is lower to drive lens rotation, aversion etc. easily in the assembling process, influence the assembly precision, produce harmful effects to the projection effect.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve and the technical task who provides improve prior art, provide a camera lens mounting structure, it is inconvenient to solve the lens installation among the prior art, and efficiency is lower, drives the lens in the assembling process easily, influences the problem of assembly precision.

For solving the above technical problem, the technical scheme of the utility model is that:

the utility model provides a lens mounting structure, includes lens cone and connects in the lens cone lateral dustcoat spare, be provided with the portion of leaning on that holds that is used for laying the lens on the lens cone, be provided with the pressure that is used for pushing down the lens along the lens cone axial on the dustcoat spare and attach the portion, be provided with block portion one on the dustcoat spare, be provided with block portion two on the lens cone, block portion one and block portion two joint cooperations so that press to attach the portion and hold the portion of leaning on with the lens centre gripping between the two, be provided with the logical light mouth that exposes the lens on the dustcoat spare. Lens mounting structure be used for the mounting of fixed lens and outward appearance piece integrated as an organic whole, compromise fixedly, dustproof and outward appearance to adopt the connection structure of joint, can effectively improve assembly efficiency, can accomplish the installation with dustcoat lock on the lens cone along the lens cone axial, the situation of the mounting that traditional thread tightening mode can not appear in the installation drives the lens, guarantee lens assembly precision is favorable to ensureing good projection effect.

Furthermore, the second clamping part is a flange extending from the wall surface of the lens barrel along the radial direction, and the first clamping part is an elastic reverse buckle, so that the structure is simple, the processing and the implementation are easy, the assembly is convenient, and the connection stability is good.

Furthermore, be provided with location portion on the lens cone, be provided with on the dustcoat spare with location portion complex spacing portion of direction, the cooperation of location portion and the spacing portion of direction plays the spacing effect of direction in the assembling process for dustcoat spare and the accurate cooperation of lens cone ensure that disposable equipment is put in place, avoid appearing the situation of misloading, guarantee assembly efficiency and precision, location portion and the spacing portion of direction cooperation can also prevent to take place relative rotation between dustcoat spare and the lens cone after the assembly is accomplished, guarantee accurate stable relation of connection between the two.

Furthermore, a fit clearance is reserved between the positioning portion and the guide limiting portion to form a dispensing space, the rear outer cover piece and the lens barrel are further fixed in a dispensing mode, looseness caused by vibration is avoided, and assembling stability of the lens is improved.

Furthermore, location portion is the arc breach, the spacing portion of direction is the arc arch, and simple structure easily carries out processing, and it is spacing to effectively lead, assembly convenient operation.

Furthermore, the positioning parts are arranged at intervals along the circumferential direction of the lens cone, the guiding limiting parts are provided with a plurality of parts and correspond to the positioning parts one by one, limiting accuracy is improved, and the outer cover part can be assembled on the lens cone only when the guiding limiting parts are accurately matched with the positioning parts one by one.

Furthermore, the bearing part is a step formed by reducing the inner diameter of the inner wall of the lens cone, the structure is simple, the processing is easy, and the inner wall of the lens cone also plays a role in positioning the circumferential direction of the lens.

Furthermore, the pressing and attaching part is in a cylindrical shape matched with the inner diameter of the end part of the lens barrel, and the pressing and attaching part extends into the lens barrel to press the lens on the bearing part. The pressing part is inserted into the end part of the lens cone to play a role in guiding and limiting, so that the outer cover piece is better ensured to be accurately installed on the lens cone.

Furthermore, a plurality of bosses are arranged on the step at intervals along the circumferential direction of the lens barrel to support the lens at multiple points, the axis of the lens needs to be accurate along the designed optical axis direction, an included angle exists between the axis of the lens and the designed optical axis direction to influence imaging, if the bearing part is a whole annular plane, the flatness of the whole surface is relatively difficult to adjust, the lens is easy to incline when assembled on the lens barrel, the structure of the multiple-point support is formed by the bosses, the flatness is easy to adjust to guarantee, and the lens is not inclined after being assembled.

Furthermore, the height of boss is 0.1 ~ 0.2mm, and the precision is high, conveniently finely tunes.

Compared with the prior art, the utility model discloses the advantage lies in:

lens mounting structure be used for fixed lens mounting and outward appearance piece integrated as an organic whole, compromise fixedly, dustproof and outward appearance, assembly efficiency is high, the situation that the lens was taken along can not appear in the assembling process, guarantee lens assembly precision is favorable to ensureing good projection effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the lens mounting structure of the present invention;

fig. 2 is a schematic bottom-side structural view of the lens mounting structure of the present invention;

FIG. 3 is a schematic view of detail A of FIG. 2;

fig. 4 is an exploded schematic view of the lens mounting structure of the present invention;

fig. 5 is a schematic sectional view of the lens mounting structure of the present invention.

In the figure:

the lens barrel comprises a lens barrel 1, a bearing part 11, a boss 12, an outer cover part 2, a pressing part 21, a light through port 22, a first clamping part 41, a second clamping part 42, a positioning part 51, a guide limiting part 52, a dispensing space 53 and a lens 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses camera lens mounting structure, simple structure easily assembles, improves assembly efficiency, guarantee camera lens installation accuracy.

As shown in fig. 1 to 5, a lens mounting structure for a lens includes a lens barrel 1 and a housing 2 connected to an end side of the lens barrel 1, wherein the lens barrel 1 is provided with a bearing portion 11 for placing a lens 3, the housing 2 is provided with a pressing portion 21 for pressing the lens 3 along an axial direction of the lens barrel 1, the housing 2 is provided with a first engaging portion 41, the lens barrel 1 is provided with a second engaging portion 42, the first engaging portion 41 and the second engaging portion 42 are engaged with each other to allow the pressing portion 21 and the bearing portion 11 to clamp the lens 3 therebetween, and the housing 2 is provided with a light-passing opening 22 for exposing the lens 3.

Specifically, the second engaging portion 42 is a flange extending from the outer wall surface of the lens barrel 1 along the radial outer side, the flange covers the entire circumference of the lens barrel 1, that is, an annular flange is disposed on the outer wall of the lens barrel 1, the structure is simple, the processing and implementation are easy, the structural stability is good, the damage is not easy to occur, and the long-term stable connection is ensured, the first engaging portion 41 is an elastic reverse buckle, the elastic reverse buckle specifically comprises an elastic arm along the axial direction of the lens barrel 1 and a protruding portion disposed on the elastic arm, one side of the protruding portion in the axial direction of the lens barrel 1 is an inclined surface side, a stopping surface is disposed on the inclined surface side, the outer cover 2 is buckled to the end side of the lens barrel 1 along the axial direction of the lens barrel 1, the inclined surface of the elastic reverse buckle first contacts with the flange, the outer cover 2 continues to move along the axial direction of the lens barrel 1, under the inclined surface of the protruding portion, the elastic arm is elastically deformed to avoid the flange, and after the protruding portion passes over the flange, the stop surface of the boss snaps over the flange to complete the snap-fit. In this embodiment, four first engaging portions 41 on the outer cover 2 are uniformly arranged along the circumferential direction of the lens barrel 1 at intervals, so as to ensure that the outer cover 2 and the lens barrel 1 are sufficiently engaged in the entire circumferential direction, avoid local looseness in the circumferential direction, and ensure the stability of fixing the lens 3, and the number of the first engaging portions 41 is not specifically limited, and may be three, five, or more. The second engaging portion 42 may also be of other structures, for example, a groove is formed on the wall surface of the lens barrel 1, the first engaging portion 41 also adopts an elastic reverse buckle, and a convex portion of the elastic reverse buckle is embedded into the groove to complete the engagement.

In this embodiment, the lens barrel 1 is provided with a positioning portion 51, the outer cover member 2 is provided with a guiding and limiting portion 52 engaged with the positioning portion 51, the engagement between the positioning portion 51 and the guiding and limiting portion 52 plays a guiding and limiting role in the assembly process, so that the outer cover member 2 and the lens barrel 1 are precisely engaged to ensure the one-time assembly in place, because the lens barrel 1 is cylindrical, after the first engaging portion 41 and the second engaging portion 42 of this embodiment are engaged and connected, the outer cover member 2 and the lens barrel 1 can still rotate relatively, and the lens assembly cannot be accurately mounted when the lens assembly is assembled to the whole machine, in this embodiment, the positioning portion 51 and the guiding and limiting portion 52 are engaged to perform circumferential limiting, so that the outer cover member 2 can only be assembled to the lens barrel 1 according to a specific posture, and the positioning portion 51 is an arc-shaped notch, the arc-shaped notch is specifically arranged on a flange serving as a second clamping part 42, the guide limiting part 52 is an arc-shaped bulge, two positioning parts 51 are arranged at intervals along the circumferential direction of the lens barrel 1, two guide limiting parts 52 are arranged and correspond to the positioning parts 51 one by one, when the housing member 2 is mounted on the lens barrel 1, only after the positioning portions 51 and the guide stoppers 52 are aligned one by one, the outer cover 2 can move along the axial direction of the lens barrel 1 relative to the lens barrel 1, otherwise the arc-shaped protrusion as the guiding and limiting part 52 interferes with the flange as the second engaging part 42, so that the first engaging part 41 cannot be engaged with the second engaging part 42, after the outer cover part 2 is assembled on the lens cone 1, the arc-shaped bulge is just positioned in the arc-shaped notch, so that the outer cover part 2 is prevented from rotating relative to the lens cone 1, and the accurate and stable connection relation between the outer cover part and the lens cone 1 is guaranteed;

furthermore, a fit gap is reserved between the positioning portion 51 and the guide limiting portion 52 to form a dispensing space 53, an adhesive is added into the dispensing space 53 to bond and fix the outer cover 2 and the lens barrel 1, so that the situation that the first clamping portion 41 and the second clamping portion 42 are loosened due to disengagement caused by vibration is prevented, the lens 3 can be stably fixed for a long time, and the projection quality is prevented from being influenced by the looseness of the lens 3.

In this embodiment, the bearing portion 11 is a step formed by reducing the inner diameter of the inner wall of the lens barrel 1, and has a simple structure, and is easy to process and implement, the inner wall of the lens barrel 1 has a limiting effect on the circumferential direction of the lens 3, so as to ensure the installation accuracy of the lens 3, the pressing and attaching part 21 is in a cylinder shape matched with the inner diameter of the end part of the lens barrel 1, the pressing and attaching part 21 extends into the lens barrel 1 to press the lens 3 on the bearing part 11, the outer diameter of the pressing part 21 is matched with the inner diameter of the end part of the lens cone 1, and can play a role in guiding and limiting, so that the outer cover part 2 is precisely matched and connected with the lens cone 1, and the lens 3 is completely covered in the lens cone 1, the clearance between the outer wall of the pressing part 21 and the inner wall of the lens cone 1 is small, which can prevent the foreign dust and sundries from entering the position of the lens, the dustproof effect is good, in order to further improve the dustproof effect, a sealing ring can be arranged between the outer wall of the pressing part 21 and the inner wall of the lens barrel 1;

the lens barrel is characterized in that a plurality of bosses 12 are arranged on the step at intervals along the circumferential direction of the lens barrel 1 to support the lens 3 at multiple points, the height of each boss 12 is 0.1-0.2 mm, the height of each boss 12 specifically means that the boss 12 protrudes out of the height of the step in the axial direction of the lens barrel 1, the support flatness of the lens 3 can be adjusted more conveniently in a multi-point support mode, the axis of the lens 3 is ensured to be accurate, the projection quality is guaranteed, the height of each boss 12 is low enough, the structural stability is good, the support precision cannot be changed due to deformation and other reasons, and the lens 3 is ensured to be in an accurate state stably for a long time.

After the outer cover part 2, the lens 3 and the lens barrel 1 are assembled, the lens component is integrally installed on the whole machine, foam is attached to one side of the outer cover part 2 facing to the whole machine shell, namely, the foam is clamped between the outer cover part 2 and the whole machine shell, the foam is utilized to eliminate the fit clearance between the outer cover part 2 and the whole machine shell, the dustproof effect is achieved, meanwhile, the foam also plays a role in buffering, the lens component is effectively protected, and the lens component is prevented from being damaged due to impact. In this embodiment, one side of the outer cover 2 facing the casing of the whole device is rectangular to match with a window formed on the casing of the whole device, the rectangular frame on the outer cover 2 is not opposite to the lens 3, that is, the rectangular frame is deviated to one side of the lens 3 in the radial direction to partially shield the lens 3, so that the light passing port 22 is a non-circular shaped through port, but does not obstruct normal projection, because the projection picture is rectangular, the cross section of the projection beam is rectangular, and the projection beam does not occupy the whole area of the lens 3, and the local shielding of the lens 3 does not affect normal projection.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims (10)

1. The utility model provides a lens mounting structure, its characterized in that includes lens cone (1) and connects in lens cone (1) distolateral dustcoat spare (2), be provided with on lens cone (1) and hold and lean on portion (11) that are used for laying lens (3), be provided with on dustcoat spare (2) and be used for pushing down pressing attaching portion (21) of lens (3) along lens cone (1) axial, be provided with block portion one (41) on dustcoat spare (2), be provided with block portion two (42) on lens cone (1), block portion one (41) and block portion two (42) joint cooperation are so that press attaching portion (21) and hold and lean on portion (11) with lens (3) centre gripping between the two, be provided with clear optical access (22) that expose lens (3) on dustcoat spare (2).

2. The lens barrel according to claim 1, wherein the second engaging portion (42) is a radially extending flange on the wall surface of the lens barrel (1), and the first engaging portion (41) is an elastic reverse-locking member.

3. The lens barrel (1) according to claim 1, wherein a positioning portion (51) is provided on the lens barrel (1), and a guide stopper (52) engaged with the positioning portion (51) is provided on the outer cover member (2).

4. The lens barrel mounting structure according to claim 3, wherein a fitting gap is reserved between the positioning portion (51) and the guide limiting portion (52) to form a dispensing space (53).

5. The lens barrel mounting structure according to claim 3, wherein the positioning portion (51) is an arc-shaped notch, and the guide limiting portion (52) is an arc-shaped protrusion.

6. The lens barrel mounting structure according to claim 3, wherein the positioning portions (51) are provided in plural at intervals in a circumferential direction of the lens barrel (1), and the guide stoppers (52) are provided in plural and correspond to the positioning portions (51) one to one.

7. The lens barrel according to any one of claims 1 to 6, wherein the bearing portion (11) is a step formed by reducing an inner diameter of an inner wall of the lens barrel (1).

8. The lens barrel mounting structure according to claim 7, wherein the press-attaching portion (21) has a cylindrical shape matching an inner diameter of an end portion of the lens barrel (1), and the press-attaching portion (21) extends into the lens barrel (1) to press the lens (3) against the bearing portion (11).

9. The lens barrel mounting structure according to claim 7, wherein a plurality of bosses (12) are provided on the step at intervals along a circumferential direction of the lens barrel (1) to support the lens (3) at a plurality of points.

10. The lens barrel mounting structure according to claim 9, wherein the height of the boss (12) is 0.1 to 0.2 mm.

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