Lens barrel assembly structure and projection device

Abstract

A lens barrel assembly structure comprises a barrel body and a face shell, and the face shell is provided with an assembly hole. A plurality of first limiting parts are arranged on the cylinder body; the limiting piece is provided with a second limiting part; during assembly, one end of the cylinder penetrates through the assembly hole, the second limiting part is selectively clamped with the first limiting part, and the limiting piece is matched with the assembly hole, so that one end of the cylinder is limited in the face shell. According to the lens barrel assembling structure, the plurality of first limiting parts are arranged on the barrel body of the lens barrel, and the limiting piece is selectively in limiting fit with one of the first limiting parts on the inner side of the surface shell, so that the barrel body of the lens barrel is fixed in the assembling hole of the surface shell, and the purpose of simplifying the mounting process is achieved.

Description

Technical Field

[0001] The utility model relates to the field of lens barrels and related equipment, in particular to a lens barrel assembly structure and a projection device. Background Art

[0002] In the field of projection equipment, the lens barrel is an indispensable component used to load the lens group.

[0003] However, most of the lens barrels currently on the market are fixed by threads or screws, which makes installation difficult and is not conducive to improving production capacity.

[0004] Based on this, it is necessary to provide a lens barrel assembly structure. Summary of the Invention

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] A lens barrel assembly structure includes a barrel body 1 and a face shell 3, wherein the face shell 3 is provided with an assembly hole 31 suitable for installing the barrel body 1; a plurality of first limiting portions 13 are provided on the outer wall of the barrel body 1, and the first limiting portions 13 are arranged along the circumference of the barrel body 1, and the plurality of first limiting portions 13 are distributed along the length direction of the barrel body 1; and further includes a limiting member 2, wherein the limiting member 2 is provided with a second limiting portion 21; during assembly, one end of the barrel body 1 passes through the assembly hole 31, and the first limiting portion 13 is selectively engaged by the second limiting portion 21, and the limiting member 2 cooperates with the assembly hole 31, thereby limiting one end of the barrel body 1 within the face shell 3.

[0007] Furthermore, a protrusion 15 is provided at one end of the cylinder 1 away from the first limiting portion 13 , which is suitable for limiting the cylinder 1 from completely sinking into the surface shell 3 .

[0008] Furthermore, a buffer ring 4 is included, which is sleeved on the outer wall of the cylinder 1 and located between the raised portion 15 and the surface shell 3.

[0009] Furthermore, an annular groove 14 is provided on the outer wall of the cylinder 1; the buffer ring 4 is sleeved in the annular groove 14; the assembly hole 31 is provided with a limiting groove 311, and after assembly, the buffer ring 4 is located in the space formed by the annular groove 14 and the limiting groove 311.

[0010] Furthermore, the cylinder body 1 includes a first half cylinder 11 and a second half cylinder 12 ; the first half cylinder 11 and the second half cylinder 12 are centrally symmetrical or axisymmetrically arranged, and can form a complete cylindrical structure after being spliced ​​together.

[0011] Furthermore, an annular groove or a plurality of column grooves is provided on one side of the first half cylinder 11 close to the second half cylinder 12; a convex edge cooperating with the annular groove or a plurality of connecting columns cooperating with the column groove is provided on the second half cylinder 12.

[0012] Furthermore, the limiting member 2 is an annular member having a notch 22 ; the second limiting portion 21 is provided on the inner ring of the annular member; and the limiting member 2 is assembled with the cylinder 1 through the notch 22 .

[0013] Furthermore, the second limiting portion 21 is provided near one of the end faces of the limiting member 2 , so that when the limiting member 2 is assembled, the second limiting portion 21 has two installation modes: one is far away from the face shell 3 , and the other is close to the face shell 3 .

[0014] The present utility model also provides a projection device, comprising a lens barrel assembly structure as described in any one of the above items; a lens group, installed in the barrel body 1; a light source assembly, connected to the surface shell 3, and located behind the barrel body 1; a back shell 5, connected to the surface shell 3, forming an installation space with the surface shell 3 suitable for accommodating the barrel body 1 and the light source assembly.

[0015] Furthermore, the face shell 3 is provided with a plurality of assembly holes 31; the barrel 1 is provided with a plurality of, each of which is limited at one end in the face shell 3 by a limiting member 2; the lens group is provided with a plurality of groups, which are respectively installed in a plurality of the barrels 1; and the plurality of barrels 1 are respectively matched with a light source assembly, or share the same light source assembly.

[0016] The present invention provides a lens barrel assembly structure by providing multiple first limiting portions on the lens barrel body. A limiting member on the inner side of the face shell selectively forms a limiting engagement with one of the first limiting portions, thereby securing the lens barrel body in the assembly hole of the face shell, thereby simplifying the installation process. The present invention also provides a projection device that, by providing multiple lens barrels, can simultaneously provide multiple projections, thereby enriching the light and shadow atmosphere created by the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The present invention discloses a schematic structural diagram of a lens barrel assembly structure excluding the front shell.

[0019] Figure 2This is a structural diagram of the lens barrel assembly structure.

[0020] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the structure.

[0021] Figure 4 It is a structural diagram of the cylinder.

[0022] Figure 5 Schematic diagram of the explosion structure of the cylinder and lens group.

[0023] Figure 6 The present invention discloses a schematic diagram of the explosion structure of a projection device according to an embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 1. Cylinder; 11. First half cylinder; 12. Second half cylinder; 13. First limiting portion;

[0026] 14. annular groove; 15. raised portion;

[0027] 2. Limiting member; 21. Second limiting portion; 22. Notch;

[0028] 3. Surface shell; 31. Assembly hole; 311. Limiting groove;

[0029] 4. Buffer ring;

[0030] 5. Back shell. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments and drawings. It should be noted that the embodiments described below in conjunction with the reference drawings are exemplary and are intended to be used to explain the present invention, and should not be understood as limiting the present invention.

[0032] For example, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature; "plurality" means at least two, for example, two, three, etc., unless otherwise specifically specified.

[0033] Terms such as "installed", "connected", "connected", "fixed" etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined.

[0034] For example, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings, and are intended only to facilitate description of the technical solutions of the present invention, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. For example, when a first feature is "up" or "down" a second feature, it means that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium; when a first feature is "above," "above," or "above" a second feature, it means that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is at a higher level than the second feature; when a first feature is "below," "below," or "below" a second feature, it means that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is at a lower level than the second feature.

[0035] Example

[0036] like Figure 1-6 As shown, the present invention provides a preferred embodiment of a lens barrel assembly structure, comprising a barrel body 1 and a housing 3, wherein the housing 3 is provided with an assembly hole 31 suitable for mounting the barrel body 1; a plurality of first limiting portions 13 are provided on the outer wall of the barrel body 1, the first limiting portions 13 being arranged along the circumference of the barrel body 1 and distributed along the length of the barrel body 1; a limiting member 2 is also provided, wherein the limiting member 2 is provided with a second limiting portion 21; during assembly, one end of the barrel body 1 passes through the assembly hole 31, and the first limiting portion 13 can be selectively engaged by the second limiting portion 21 according to the thickness of the assembly hole 31 in different product models. The limiting member 2 cooperates with the assembly hole 31 to quickly limit one end of the barrel body 1 within the housing 3, avoiding the cumbersome process of threaded or screwed fixing, thereby optimizing production efficiency. Furthermore, the present invention provides multiple first limiting portions 13 on the barrel body 1, allowing the limiting member 2 to be selectively used according to different model sizes, thereby increasing the universal adaptability of the barrel body 1 accessories, thereby greatly improving production capacity and increasing the economic benefits of the enterprise.

[0037] In this embodiment, preferably, the barrel 1 is cylindrical as a whole, the first limiting portion 13 located on the barrel 1 is a circular groove surrounding the barrel 1, the limiting member 2 is annular, the second limiting portion 21 is a circular ring surrounding the limiting member 2, and the second limiting portion can also be a plurality of protrusions distributed in a circular shape, so as to facilitate installation, without the need to specifically adjust the orientation for alignment, and at the same time, it is also convenient to rotate and adjust the barrel 1. In other embodiments, the barrel 1 and the limiting member 2 are not limited to circular shapes, and only the first limiting portion 13 and the second limiting portion 21 are set to circular shapes, which can basically achieve the effect of this embodiment. In other embodiments with poorer effects, the outer shapes of the barrel 1 and the limiting member 2, as well as the first limiting portion 13 and the second limiting portion 21, can all be non-circular. In addition, as one of the simplest alternatives, the first limiting portion 13 can be set to a continuous annular ridge or a plurality of protrusions distributed in an annular shape, and the second limiting portion 21 can be set to a groove, which should also be regarded as an equivalent solution of the present utility model.

[0038] The assembly hole 31 is a circular through hole preset in the face shell 3. Preferably, the diameter of the limiting member 2 is larger than the aperture of the assembly hole 31, so that the limiting member 2 and the assembly hole 31 can achieve limited cooperation; and in some embodiments with poor effects, it is only necessary to set a certain length of the limiting member 2 to be larger than the aperture of the assembly hole 31.

[0039] Furthermore, a raised portion 15, preferably a raised ring, is provided at the end of the barrel 1 away from the first stop 13. This raised portion is adapted to prevent the barrel 1 from fully sinking into the housing 3. After assembly, the raised ring is at least partially exposed outside the housing 3. In this embodiment, the outer diameter of the raised ring is larger than the diameter of the assembly hole 31. Furthermore, the raised ring is a focus ring, rotatably connected to the barrel 1 and connected to the focusing mechanism of the lens assembly; the rotational axis of the focus ring coincides with the central axis of the barrel 1.

[0040] Furthermore, a buffer ring 4 is included, which is sleeved on the outer wall of the cylinder 1 and located between the raised portion 15 and the surface shell 3.

[0041] Specifically, an annular groove 14 is provided on the outer wall of the cylinder 1; the buffer ring 4 is sleeved on the annular groove 14; the buffer ring 4 is sleeved on the annular groove 14; the assembly hole 31 is provided with a limiting groove 311 suitable for limiting the buffer ring 4, and the limiting groove 311 is located on the hole wall of the assembly hole 31, so that after the assembly is completed, the buffer ring cannot be observed from the outside, so as to improve the aesthetics of the product; after assembly, the buffer ring 4 is located in the space formed by the annular groove 14 on the cylinder 1 and the upper limiting groove 311 on the assembly hole 31. One of the purposes is to form a buffer zone between the cylinder 1 and the surface shell 3 by arranging the buffer ring 4, increase the friction between the two, and reduce the noise generated by the shaking of the product, improve the texture of the product, and further provide an outward elastic force for the limiting member 2, so that it can be better stuck on the cylinder 1, thereby increasing the stability of the structure.

[0042] The barrel 1 comprises a first half 11 and a second half 12; the first half 11 and the second half 12 are arranged centrally or axially symmetrically, and when joined together, they form a complete cylindrical structure. In this embodiment, the barrel 1 is divided into the first half 11 and the second half 12, each half 12 having a semi-cylindrical shape.

[0043] The first half-tube 11 and the second half-tube 12 are joined and secured together using a plug-in structure. Specifically, an annular groove or several columnar grooves are provided on the side of the first half-tube 11 closest to the second half-tube 12; the second half-tube 12 is provided with a ridge that mates with the annular groove, or with several connecting columns that mate with the columnar grooves. In this embodiment, several connecting columns are preferably provided along the circumference of the splicing surface edge of the first half-tube 11, and several columnar grooves are preferably provided along the circumference of the splicing surface edge of the second half-tube 12.

[0044] The retaining member 2 is an annular member with a notch 22. The second retaining portion 21 is located on the inner ring of the annular member. The retaining member 2 is assembled with the cylindrical body 1 through the notch 22. Due to the inherent elasticity of the material, an external force can expand the notch 22 to a certain extent. After the cylindrical body 1 passes through the notch 22, the external force is removed, and the retaining member 2 tightens the cylindrical body 1, firmly engaging the second retaining portion 21 with the first retaining portion 13. The notch 22 is sized to occupy between one-quarter and one-half of the annular ring, preferably one-third, to better achieve the aforementioned function and ensure that the retaining member 2 holds the cylindrical body 1 tightly and does not easily fall off.

[0045] Furthermore, the second limiting portion 21 is located on the inner ring of the limiting member 2 and is close to one of the end faces of the limiting member 2, forming a stepped shape on the inner ring of the limiting member 2, so that when the limiting member 2 is assembled, the second limiting portion 21 has two installation modes: one is far away from the surface shell 3 and the other is close to the surface shell 3. Therefore, one of them can be selectively used according to actual conditions to adapt to different assembly heights. For example, the hole wall of the assembly hole 31 is thinner, that is, the limiting member 2 is selected to be stuck in the first limiting portion 13 closer to the outer protrusion 15, between the limiting member 2 and the edge of the assembly hole 31. There is still a certain distance. In this case, the second limit part 21 can be stuck on the cylinder 1 away from the face shell 3, and the step of the inner ring of the limit part 2 provides a certain height compensation to fill the distance between the edge of the assembly hole 31; in addition, the buffer ring 4 can also provide a certain height compensation, and the buffer ring 4 is made of flexible material and can be squeezed, which can better adjust the over-compensation problem caused by the inner step of the limit part 2 and the height of the buffer ring 4 itself, further increase the adaptability of the cylinder 1 component, and enable the cylinder 1 and the face shell 3 to be tightly assembled together.

[0046] like Figure 6As shown, the present invention also provides a projection device, including the lens barrel assembly structure as described above; a lens group, installed in the barrel body 1; a light source assembly, connected to the face shell 3, located behind the barrel body 1, that is, on the side away from the face shell 3; a back shell 5, connected to the face shell 3, forming an installation space with the face shell 3 suitable for accommodating the barrel body 1 and the light source assembly.

[0047] Furthermore, the housing 3 is provided with several mounting holes 31; the barrels 1 are provided with several ends, each of which is restrained within the housing 3 by a stopper 2; the lens groups are provided with several groups, each mounted within a plurality of barrels 1; and the barrels 1 are each equipped with a light source assembly, or they may share the same light source assembly. One purpose of this arrangement is to project different light and shadow effects by providing multiple lens barrels, thereby enriching the atmosphere created by the product.

[0048] The present invention provides a lens barrel assembly structure in which a plurality of first limiting portions 13 are provided on the lens barrel body 1. A limiting member 2 is located on the inner side of the face shell 3 and selectively engages with one of the first limiting portions 13 to form a limiting engagement, thereby securing the lens barrel body 1 in the assembly hole 31 of the face shell 3, thereby simplifying the installation process. A projection device is also provided, which, by providing multiple lens barrels, can simultaneously provide multiple projections, thereby enriching the light and shadow atmosphere created by the product.

[0049] The above embodiments only express part of the implementation methods of the invention. Based on the embodiments of the invention, certain modifications, substitutions and improvements made by those skilled in the art without creative work without departing from the concept of the invention are still within the scope of protection of the invention.

Claims

1. A lens barrel assembly structure, comprising a barrel body (1) and a cover (3), wherein the cover (3) is provided with an assembly hole (31) suitable for mounting the barrel body (1), characterized in that: A plurality of first limiting portions (13) are provided on the outer wall of the cylinder (1), the first limiting portions (13) are arranged along the circumference of the cylinder (1), and the plurality of first limiting portions (13) are distributed along the length direction of the cylinder (1); It also includes a limiting member (2), wherein the limiting member (2) is provided with a second limiting portion (21); During assembly, one end of the cylinder (1) passes through the assembly hole (31), and the second limiting portion (21) is selectively engaged with the first limiting portion (13), and the limiting member (2) cooperates with the assembly hole (31), thereby limiting one end of the cylinder (1) within the face shell (3).

2. The lens barrel assembly structure according to claim 1, wherein: A protrusion (15) is provided at one end of the cylinder (1) away from the first limiting portion (13), suitable for limiting the cylinder (1) from completely sinking into the surface shell (3).

3. The lens barrel assembly structure according to claim 2, wherein: It also includes a buffer ring (4) which is sleeved on the outer wall of the cylinder (1) and is located between the raised portion (15) and the surface shell (3).

4. The lens barrel assembly structure according to claim 3, wherein: An annular groove (14) is provided on the outer wall of the cylinder (1); The buffer ring (4) is sleeved in the ring groove (14); The assembly hole (31) is provided with a limiting groove (311); after assembly, the buffer ring (4) is located in a space formed by the ring groove (14) and the limiting groove (311).

5. The lens barrel assembly structure according to any one of claims 1 to 4, characterized in that: The cylinder (1) comprises a first half cylinder (11) and a second half cylinder (12); The first half cylinder (11) and the second half cylinder (12) are arranged in a centrosymmetric or axisymmetric manner, and can form a complete cylindrical structure after being spliced ​​together.

6. The lens barrel assembly structure according to claim 5, characterized in that: An annular groove or a plurality of column grooves are provided on one side of the first half-cylinder (11) close to the second half-cylinder (12); The second half cylinder (12) is provided with a convex edge that matches the annular groove, or is provided with a plurality of connecting columns that match the column grooves.

7. The lens barrel assembly structure according to any one of claims 1 to 4 and 6, characterized in that: The limiting member (2) is an annular member having a notch (22); The second limiting portion (21) is provided on the inner ring of the annular component; The limiting member (2) is assembled with the cylinder (1) through the notch (22).

8. The lens barrel assembly structure according to claim 7, wherein: The second limiting portion (21) is arranged near one of the end faces of the limiting member (2), so that when the limiting member (2) is assembled, the second limiting portion (21) has two installation modes: the second limiting portion (21) is away from the face shell (3) and the second limiting portion (21) is close to the face shell (3).

9. A projection device, characterized in that: comprising the lens barrel assembly structure according to any one of claims 1 to 8; A lens group is installed in the barrel (1); A light source assembly connected to the housing (3) and located behind the barrel (1); The back shell (5) is connected to the front shell (3) and forms an installation space suitable for accommodating the barrel (1) and the light source assembly with the front shell (3).

10. The projection device according to claim 9, wherein: The face shell (3) is provided with a plurality of assembly holes (31); The cylinder (1) is provided with a plurality of cylinders, each of which has one end limited within the surface shell (3) by a limiting member (2); The lens group is provided in a plurality of groups, which are respectively installed in a plurality of the barrels (1); A plurality of the barrels (1) are respectively matched with a light source assembly, or share the same light source assembly.

Images