Modularized focusing structure and lamp

Abstract

The utility model relates to a modular focusing structure and a lamp. The modular focusing structure comprises a lens assembly and a plurality of focusing driving assemblies. The lens assembly comprises a lens shell, a plurality of fixing flanges and a plurality of lead screws, the fixing flanges are arranged on the lens shell at intervals, and the fixing flanges are connected with one ends of the lead screws in a one-to-one correspondence mode. The multiple focusing driving assemblies and the lens shell are arranged in a spaced mode, the multiple focusing driving assemblies are in driving connection with the multiple lead screws in a one-to-one correspondence mode, and the focusing driving assemblies are used for driving the lens assembly to be close to or away from the focusing driving assemblies in the extending direction of the lead screws. According to the modularized focusing structure, the lead screw can be effectively connected to the lens shell through the fixing flange, so that compared with a traditional focusing structure in which the lead screw can be connected to the shell assembly only through a lead screw flange and a fixing metal plate, the modularized focusing structure can simplify a connecting structure between the lead screw and the lens shell, and the connecting structure is more compact. Therefore, the assembling efficiency of the modularized focusing structure can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of stage lamps, and in particular to a modular focusing structure and a lamp. Background Art

[0002] In order to meet the lighting design of different stage performances, the lamps used on the stage need to adjust the focal length to meet different stage lighting effects. Among them, the focusing structure provided on the lamp is an important component for realizing the focal length adjustment of the lamp. Generally, the focusing structure adjusts the focal length by driving the lens assembly to move forward and backward through the focusing drive assembly.

[0003] However, since the current focusing structure has a relatively complex structure, the current focusing structure has a problem of low assembly efficiency. Summary of the invention

[0004] Based on this, it is necessary to provide a modular focusing structure and lamp to address the problems of complex structure and low assembly efficiency of the focusing structure.

[0005] A modular focusing structure, comprising:

[0006] A lens assembly, the lens assembly comprising a lens housing, a plurality of fixing flanges and a plurality of screw rods, the plurality of fixing flanges being arranged at intervals on the lens housing, and the plurality of fixing flanges being connected to one end of the plurality of screw rods in a one-to-one correspondence;

[0007] A plurality of focus drive assemblies are arranged at intervals from the lens housing, and the plurality of focus drive assemblies are drive-connected to the plurality of lead screws in a one-to-one correspondence, and the focus drive assembly is used to drive the lens assembly to approach or move away from the focus drive assembly along the extension direction of the lead screw.

[0008] The technical solution is further described below:

[0009] In one embodiment, the lens housing includes a first housing and a second housing, the fixing flange is arranged on a side of the first housing facing away from the second housing, the lens assembly also includes a first screw, the first screw includes a first head and a first screw rod, the first head is arranged on a side of the first housing facing away from the second housing, and an end of the first screw rod facing away from the first head passes through the first housing and is connected to the second housing.

[0010] In one embodiment, the first shell is provided with a plurality of first accommodating grooves, and the second shell is provided with a plurality of second accommodating grooves, and the plurality of first accommodating grooves correspond one-to-one with the plurality of second accommodating grooves to form a plurality of accommodating spaces. The lens assembly also includes a plurality of lenses, and a step portion is provided on the outer periphery of the lens, and the step portion includes a first surface and a second surface which are arranged opposite to each other along the thickness direction of the lens. The plurality of lenses are installed one-to-one in the plurality of accommodating spaces, and the first surface abuts against the notch of the first accommodating groove, and the second surface abuts against the notch of the second accommodating groove.

[0011] In one embodiment, a plurality of light guide covers are disposed on a side of the first shell facing away from the second shell, the light guide covers are formed with light guide holes, and the plurality of light guide holes are connected to the plurality of first accommodating grooves in a one-to-one correspondence.

[0012] In one embodiment, the inner diameter of the light guide hole gradually decreases from an end close to the second shell to an end away from the second shell;

[0013] And / or, the light guide cover is provided with an avoidance groove, and when the lens assembly moves toward or away from the focus drive assembly, the focus drive assembly can penetrate into or exit from the avoidance groove.

[0014] In one embodiment, the lens assembly further includes a plurality of focus slides arranged at intervals, wherein the plurality of focus slides and the plurality of lead screws are arranged on the same side of the lens housing, the plurality of focus slides and the plurality of lead screws are arranged at intervals, and an extension direction of the focus slide is parallel to an extension direction of the lead screw, and one end of the focus slide is connected to the lens housing; the modular focusing structure further includes a plurality of guide sleeve assemblies, and the guide sleeve assemblies are slidingly connected to the focus slides in a one-to-one correspondence.

[0015] In one embodiment, the lens housing is provided with a slide rod hole, the inner surface of the slide rod hole includes two first matching planes arranged opposite to each other; the outer surface of the focus slide rod is provided with two second matching planes arranged opposite to each other, the first matching planes abut against the second matching planes in a one-to-one correspondence;

[0016] And / or, the guide sleeve assembly includes a guide sleeve fixing seat and a sliding sleeve, the guide sleeve fixing seat is provided with a guide sleeve through hole, the sliding sleeve is arranged in the guide sleeve through hole, and the sliding sleeve is slidably connected to the focusing slide rod.

[0017] In one embodiment, the modular focusing structure also includes a substrate, the substrate and the multiple screw rods are all arranged on the same side of the lens housing, and the substrate and the lens housing are spaced apart, and the guide sleeve assembly is arranged on the substrate; the focusing drive assembly includes a driving motor, a motor bracket, an elastic member, a second screw and a nut, the driving motor is arranged on the motor bracket and is drivingly connected to the screw rod, a mounting hole is opened on the motor bracket, the elastic member is ring-arranged in the mounting hole, the second screw includes a second head and a second screw, the second head is arranged on the substrate, and the end of the second screw away from the second head passes through the motor bracket and the elastic member and is threadedly connected to the nut.

[0018] In one embodiment, the modular focusing structure also includes a substrate and a Hall element, the substrate and the multiple screw rods are arranged on the same side of the lens housing, and the substrate and the lens housing are spaced apart; the Hall element and the focusing drive assembly are both arranged on the substrate; the lens assembly also includes a magnetic component, the magnetic component is arranged on the lens housing, and the magnetic component is arranged opposite to the Hall element.

[0019] A lamp comprises any one of the above modular focusing structures.

[0020] In the above-mentioned modular focusing structure and lamp, the fixed flange is connected to the lens housing, and one end of the lead screw is connected to the fixed flange, so that the lead screw can be effectively connected to the lens housing through the fixed flange. The lead screw is connected to the focusing drive assembly, so that when the focusing drive assembly is driven, the lead screw can drive the lens assembly to move along the extension direction of the lead screw, thereby realizing the focusing function of the modular focusing structure. Compared with the traditional focusing structure in which the lead screw is connected to the housing assembly through the lead screw flange and the fixed sheet metal, the modular focusing structure can effectively simplify the connection structure between the lead screw and the lens housing, thereby improving the assembly efficiency of the modular focusing structure, and can make the structure of the modular focusing structure more compact, which is conducive to realizing the miniaturization of the modular focusing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0024] FIG. 1 is a schematic structural diagram of a modular focusing structure in an embodiment of the present application.

[0025] FIG. 2 is a schematic diagram of the decomposed structure of the modular focusing structure shown in FIG. 1 .

[0026] FIG. 3 is a schematic diagram of the exploded structure of a lens assembly in an embodiment of the present application.

[0027] FIG. 4 is a schematic diagram of the exploded structure of a lens housing and a lens in an embodiment of the present application.

[0028] FIG. 5 is a partially enlarged schematic diagram of the connection between the first housing and the focus sliding rod in one embodiment of the present application.

[0029] Description of reference numerals:

[0030] 1000, modular focusing structure; 100, lens assembly; 101, focusing slide bar; 101a, second matching plane; 102, lead screw; 103, fixing flange; 104, light guide cover; 104a, light guide hole; 104b, avoidance groove; 105, first screw; 107, lens; 107a, step portion; 120, lens housing; 106, first housing; 106a, first accommodating groove; 106b, slide bar hole; 10 6c, first mating plane; 108, second shell; 108a, second accommodating groove; 109, focus positioning rod; 110, magnetic member; 200, guide sleeve assembly; 201, guide sleeve fixing seat; 202, sliding sleeve; 300, focus drive assembly; 301, drive motor; 302, nut; 303, gasket; 304, elastic member; 305, motor bracket; 306, second screw; 400, substrate; 500, Hall element. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean 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. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0037] In some related technologies, the lens assembly in the focusing structure includes a housing assembly, a fixed sheet metal, a plurality of screw flanges and a plurality of screws, the fixed sheet metal is connected to the housing assembly, the screw flange is provided at one end of the screw, and the screw flange is connected to the fixed sheet metal. When assembling the lens assembly, it is necessary to first fix the screw flange at one end of the screw, and then fix the screw flange to the fixed sheet metal fixed on the housing assembly. This means that the screw needs to be connected to the housing assembly through the screw flange and the fixed sheet metal, which makes the assembly on the lens assembly more complicated, which is not conducive to improving the assembly efficiency of the focusing structure.

[0038] Based on this, referring to FIG. 1, FIG. 2 and FIG. 3, a modular focusing structure 1000 provided in an embodiment of the present application includes a lens assembly 100 and a plurality of focusing drive assemblies 300. The lens assembly 100 includes a lens housing 120, a plurality of fixing flanges 103 and a plurality of screw rods 102, wherein the plurality of fixing flanges 103 are arranged at intervals on the lens housing 120, and the plurality of fixing flanges 103 are connected to one end of the plurality of screw rods 102 in a one-to-one correspondence. The plurality of focusing drive assemblies 300 are arranged at intervals with the lens housing 120, and the plurality of focusing drive assemblies 300 are drivingly connected to the plurality of screw rods 102 in a one-to-one correspondence, and the focusing drive assembly 300 is used to drive the lens assembly 100 to approach or move away from the focusing drive assembly 300 along the extension direction of the screw rod 102.

[0039] Among them, when assembling the lens assembly 100, it is only necessary to install the fixing flange 103 to the lens housing 120, and then connect one end of the screw rod 102 to the fixing flange 103 to complete the connection between the lens housing 120 and the screw rod 102. Therefore, compared with the focusing structure in the above-mentioned related technology, the connection structure between the lens housing 120 and the screw rod 102 is relatively simple, so it can effectively improve the assembly efficiency between the screw rod 102 and the lens housing 120.

[0040] In the above-mentioned modular focusing structure 1000, the fixing flange 103 is connected to the lens housing 120, and one end of the screw rod 102 is connected to the fixing flange 103, so that the screw rod 102 can be effectively connected to the lens housing 120 through the fixing flange 103. The screw rod 102 is drivingly connected to the focus drive assembly 300, so that when the focus drive assembly 300 is driven, the screw rod 102 can drive the lens assembly 100 to move along the extension direction of the screw rod 102, thereby realizing the focusing function of the modular focusing structure 1000. Compared with the traditional focusing structure in which the screw rod 102 is connected to the housing assembly through the screw rod flange and the fixed sheet metal, the modular focusing structure 1000 can effectively simplify the connection structure between the screw rod 102 and the lens housing 120, thereby improving the assembly efficiency of the modular focusing structure 1000, and making the structure of the modular focusing structure 1000 more compact, which is conducive to realizing the miniaturization of the modular focusing structure 1000.

[0041] Optionally, the connection between the fixing flange 103 and the screw rod 102 and between the fixing flange 103 and the first housing 106 can be a detachable connection. For example, the fixing flange 103 and the screw rod 102 and between the fixing flange 103 and the first housing 106 can be connected by screws.

[0042] Optionally, the material of the lens housing 120 may be plastic, and the lens housing 120 may be formed by extrusion of a plastic mold.

[0043] Optionally, the number of the screw rods 102 can be set as required, such as three, four or more. Preferably, the number of the screw rods 102 can be three, and the three focusing slide bars 101 are arranged in a triangle.

[0044] Optionally, the lead screw 102 can be connected to the focus drive assembly 300 through a lead screw nut provided inside the drive motor 301. Specifically, the drive motor 301 of the focus drive assembly 300 can drive the lead screw nut to rotate, and the lead screw nut is connected to the lead screw 102, so that when the focus drive assembly 300 drives the lead screw nut to rotate, the lead screw 102 can move relative to the focus drive assembly 300 along the extension direction of the lead screw 102, so as to realize the focusing function of the modular focusing structure 1000.

[0045] In one embodiment, as shown in FIG. 3 , the lens housing 120 includes a first housing 106 and a second housing 108, the fixing flange 103 is disposed on a side of the first housing 106 away from the second housing 108, and the lens assembly 100 further includes a first screw 105, the first screw 105 includes a first head and a first screw rod, the first head is disposed on a side of the first housing 106 away from the second housing 108, and an end of the first screw rod away from the first head passes through the first housing 106 and is connected to the second housing 108. In this way, the provision of the first screw 105 can effectively fasten the first housing 106 and the second housing 108, and since the second housing 108 is the outer housing of the lamp, when the first head is disposed on a side of the first housing 106 away from the second housing 108, the first head of the first screw 105 cannot be seen on the surface of the lamp, which is conducive to improving the aesthetics of the appearance of the lamp.

[0046] Further, in one embodiment, in combination with Figures 3 and 4, the first shell 106 is provided with a plurality of first accommodating grooves 106a, the second shell 108 is provided with a plurality of second accommodating grooves 108a, the plurality of first accommodating grooves 106a correspond one-to-one with the plurality of second accommodating grooves 108a to form a plurality of accommodating spaces, the lens assembly 100 also includes a plurality of lenses 107, the outer periphery of the lens 107 is provided with a step portion 107a, the step portion 107a includes a first surface and a second surface which are arranged opposite to each other along the thickness direction of the lens 107, the plurality of lenses 107 are installed one-to-one in the plurality of accommodating spaces, and the first surface abuts against the notch of the first accommodating groove 106a, and the second surface abuts against the notch of the second accommodating groove 108a. In this way, the lens 107 can be effectively fastened and fixed by the first housing 106 and the second housing 108, so that when the screw rod 102 drives the lens housing 120 to move, the lens 107 can also move closer to or farther from the focus drive assembly 300 with the lens housing 120, thereby achieving focal length adjustment, thereby satisfying the corresponding stage lighting effect. The step portion 107a is arranged so that when the lens 107 is arranged in the accommodation space, the main body of the lens 107 located on the opposite sides of the step portion 107a can be respectively embedded in the first accommodation groove 106a and the second accommodation groove 108a, thereby limiting the lens 107 in the accommodation space to prevent the lens 107 from moving left and right and affecting the focusing effect. The first surface is abutted against the notch of the first accommodation groove 106a and the second surface is abutted against the notch of the second accommodation groove 108a, which can limit the lens 107 from moving up and down along the thickness direction of the lens 107, thereby facilitating the multiple lenses 107 to be located on the same plane, thereby facilitating the focusing effect.

[0047] Specifically, when assembling the lens assembly 100, multiple lenses can be placed in the multiple second accommodating grooves 108a of the second shell 108 first, and then one end of the screw rod 102 can be inserted into the fixed flange 103 fixed on the first shell 106, and the fixed flange 103 and the screw rod can be fastened with screws, and then the first shell 106 and the second shell 108 are clamped, and the multiple lenses are correspondingly arranged in the multiple first accommodating grooves 106a, so that when the first screw rod of the first screw 105 is inserted into the lens shell 120 from one side of the first shell 106, the first shell 106 and the second shell 108 can clamp the multiple lenses.

[0048] In one embodiment, as shown in FIG. 3 and FIG. 4 , a plurality of light guide covers 104 are provided on the side of the first shell 106 away from the second shell 108, and the light guide covers 104 are formed with light guide holes 104a, and the plurality of light guide holes 104a are connected with the plurality of first accommodating grooves 106a in a one-to-one correspondence. The provision of the light guide holes 104a can ensure that the light emitted by the lamp beads corresponding to the lens 107 in the lamp can be effectively incident on the lens 107, and can also prevent the light emitted by other lamp beads that are not in a corresponding relationship with the lens 107 from being incident on the lens 107. Therefore, the provision of the light guide cover 104 can effectively prevent cross-lighting and ensure the focusing effect. Among them, in the lamp, the lamp beads are provided on the side of the first shell 106 away from the second shell 108, so that when the focusing drive assembly 300 drives the lens assembly 100 to move, the lens 107 can be close to or away from the lamp beads, thereby realizing the adjustment of the focal length.

[0049] Optionally, in order to ensure that the light guide cover 104 does not collide with the light guide column and other parts provided in the lamp during the focusing process, the height of the light guide cover 104 should be controlled within the focusing stroke.

[0050] Optionally, in one embodiment, as shown in FIG. 3 and FIG. 4 , the inner diameter of the light guide hole 104a gradually decreases from the end close to the second housing 108 to the end away from the second housing 108. When the opening of the light guide hole 104a close to the end of the lamp bead is too large, the light emitted by the lamp bead that does not correspond to the light guide cover 104 will also enter the opening, thereby forming stray light, which is not conducive to obtaining a pure light beam or a dyeing effect. Therefore, the inner diameter of the light guide hole 104a that gradually decreases toward the side away from the first housing 106 is conducive to the lamp to achieve the desired stage effect.

[0051] Optionally, the inner diameter of the opening in the light-guiding hole 104a at the end facing away from the first shell 106 cannot be too small, because the light emitted by the lamp bead will be emitted at a certain angle. If the opening is too small, when the lens shell 120 is located at the farthest position from the focusing drive assembly 300, part of the light emitted by the lamp bead cannot be smoothly incident into the light-guiding hole 104a, resulting in a loss of luminous flux, which is not conducive to fully utilizing light energy.

[0052] Furthermore, in one embodiment, the light guide cover 104 is provided with an avoidance groove 104b, and when the lens assembly 100 moves toward or away from the focus drive assembly 300, the focus drive assembly 300 can enter or exit the avoidance groove 104b. When the focus drive assembly 300 drives the lens housing 120 to move toward the side where the substrate 400 is located, the avoidance groove 104b can provide the focus drive assembly 300 with an avoidance space, thereby avoiding the collision between the lens assembly 100 and the light guide cover 104 during the focusing process. Therefore, the provision of the avoidance groove 104b is conducive to ensuring the reliability of the modular focusing structure 1000.

[0053] In one embodiment, in combination with FIGS. 1 to 4, the lens assembly 100 further includes a plurality of focus slide bars 101 arranged at intervals, the plurality of focus slide bars 101 and the plurality of lead screws 102 are all arranged on the same side of the lens housing 120, the plurality of focus slide bars 101 and the plurality of lead screws 102 are all arranged at intervals, and the extension direction of the focus slide bar 101 is parallel to the extension direction of the lead screw 102, and one end of the focus slide bar 101 is connected to the lens housing 120. The modular focusing structure 1000 further includes a plurality of guide sleeve assemblies 200, the plurality of guide sleeve assemblies 200 are all arranged on the substrate 400, and the guide sleeve assemblies 200 are slidably connected to the focus slide bar 101 in a one-to-one correspondence. The extension direction of the focus slide bar 101 is the same as the extension direction of the lead screw 102, and the focus slide bar 101 is slidably connected to the guide sleeve assembly 200, so that when the focus drive assembly 300 drives the lead screw 102, the focus slide bar 101 can slide relative to the guide sleeve assembly 200. During the use of the modular focusing structure 1000, the lead screw 102 may be deformed, which will cause inaccurate focusing accuracy when the focus drive assembly 300 drives the lead screw 102. The setting of the focus slide bar 101 is conducive to guiding the lens assembly 100 to move in a predetermined direction, thereby ensuring the focusing effect of the modular focusing structure 1000. In addition, the focus slide bar 101 can also achieve a certain support effect on the lens housing 120 and the components arranged on the lens housing 120, thereby reducing the pressure on the lead screw 102 and reducing the deformation of the lead screw 102.

[0054] Specifically, one end of the focus slide bar 101 is connected to the side of the first housing 106 away from the second housing 108. It is understandable that, since there may be assembly errors between the lead screw 102 and the first housing 106, and between the focus slide bar 101 and the first housing 106, and there may also be manufacturing errors when producing the lead screw 102 and the focus slide bar 101, the parallelism between the focus slide bar 101 and the lead screw 102 may be approximately parallel, that is, when there is a small angle between the focus slide bar 101 and the lead screw 102, the two may be considered to be parallel.

[0055] Optionally, the connection between the focus sliding bar 101 and the first housing 106 may be welding or bonding, or a detachable connection.

[0056] Optionally, the number of the focus slide bars 101 can be set as needed, such as three, four or more. Preferably, the number of the focus slide bars 101 can be three, and the three focus slide bars 101 are arranged in a triangle, and the focus slide bar 101 is arranged between two adjacent screw rods 102.

[0057] Further, in combination with FIG. 4 and FIG. 5 , the lens housing 120 is provided with a slide rod hole 106b, and the inner surface of the slide rod hole 106b includes two first matching planes 106c arranged opposite to each other. The outer surface of the focus slide rod 101 is provided with two second matching planes 101a arranged opposite to each other, and the first matching plane 106c abuts against the second matching plane 101a in a one-to-one correspondence. The cooperation of the two first matching planes 106c and the two second matching planes 101a can effectively prevent the focus slide rod 101 from rotating relative to the slide rod hole 106b without an additional stopper, which is conducive to improving the assembly efficiency of the first housing 106 and the focus slide rod 101.

[0058] Specifically, the slide rod hole 106b is provided on the first housing 106. Optionally, the focus slide rod 101 is interference fit with the slide rod hole 106b, so that the focus slide rod 101 can always be reliably connected to the first housing 106 during the focusing process.

[0059] Further, in one embodiment, as shown in combination with FIG. 1 and FIG. 2 , the guide sleeve assembly 200 includes a guide sleeve fixing seat 201 and a sliding sleeve 202, the guide sleeve fixing seat 201 is provided with a guide sleeve through hole, the sliding sleeve 202 is arranged in the guide sleeve through hole, and the sliding sleeve 202 is slidably connected to the focus slide bar 101. The arrangement of the sliding sleeve 202 can effectively reduce the friction force when the focus slide bar 101 slides relative to the guide sleeve assembly 200, thereby facilitating the focus slide bar 101 to better achieve a guiding effect.

[0060] Optionally, the material of the sleeve 202 can be set as needed. For example, the material of the sleeve 202 can be POM rod material. In this way, when the focusing slide bar 101 is made of stainless steel, compared with the sleeve 202 made of metal, the sleeve 202 can effectively reduce the noise when the focusing slide bar 101 moves relative to the sleeve 202, thereby helping to improve the user experience.

[0061] Optionally, the inner diameter of the sliding sleeve 202 may be 0.3 mm to 0.5 mm larger than the outer diameter of the focusing sliding rod 101 .

[0062] Further, in one embodiment, in combination with FIG. 1 and FIG. 2 , the modular focusing structure 1000 further includes a substrate 400, the substrate 400 and the plurality of lead screws 102 are all disposed on the same side of the lens housing 120, and the substrate 400 and the lens housing 120 are spaced apart, and the guide sleeve assembly 200 is disposed on the substrate 400. The focusing drive assembly 300 includes a driving motor 301, a motor bracket 305, an elastic member 304, a second screw 306 and a nut 302, the driving motor 301 is disposed on the motor bracket 305 and is drivingly connected to the lead screw 102, a mounting hole is provided on the motor bracket 305, the elastic member 304 is ringed around the mounting hole, the second screw 306 includes a second head and a second screw, the second head is disposed on the substrate 400, and the end of the second screw away from the second head passes through the motor bracket 305 and the elastic member 304 and is threadedly connected to the nut 302. Since there will be manufacturing errors when the lens housing 120 is formed by extrusion of a plastic mold, there will be assembly errors when the fixing flange 103 is connected to the lead screw 102, so there will be parallelism errors between the lead screw 102 connected to the first housing 106 and the focus slide 101, which makes it impossible for the lead screw 102 to move in a direction parallel to the axial direction of the drive motor 301 when the focus drive assembly 300 drives the lead screw 102. At this time, because the elastic member 304 has a certain elastic margin, the elastic member 304 can effectively compensate for the manufacturing error and the assembly error within the allowable error range, so that the drive motor 301 can be offset relative to the substrate within the elastic margin, so that the lead screw 102 can smoothly enter the drive motor 301, and the focus slide 101 can smoothly pass into the focus guide sleeve assembly 200. That is, the setting of the elastic member can avoid poor focusing or jamming, that is, when the drive motor 301 is working, the lead screw 102 can move smoothly relative to the drive motor 301, and the focusing slide bar 101 can move smoothly relative to the sliding sleeve 202, thereby achieving focusing.

[0063] Optionally, the number of the elastic member 304, the second screw 306 and the nut 302 in the focus drive assembly 300 can be set as needed, for example, they can be multiple, wherein the elastic member 304, the second screw 306 and the nut 302 can constitute an adjustment assembly, and the multiple adjustment assemblies can be arranged at intervals on the periphery of the drive motor 301 and connected to the motor bracket 305. Preferably, the number of the adjustment assemblies can be two, and the two adjustment assemblies are arranged on opposite sides of the drive motor 301, so that the adjustment assembly can reliably provide elastic margin to effectively compensate for assembly errors or manufacturing errors, thereby avoiding poor focusing or jamming.

[0064] Optionally, the second screw rod may include a first step section and a second step section connected, the first step section is connected to the second head, and the outer diameter of the first step section is larger than the second step section, and the nut 302 is connected to the second step section. The first step section is arranged so that when the focus drive assembly 300 is assembled, the nut 302 can be locked to the same height relative to the motor bracket 305, which is conducive to ensuring that the elastic loosening margin of the focus drive assembly 300 is consistent and improving the stability of the modular focus structure 1000.

[0065] Schematically, the focus drive assembly 300 further includes a gasket 303, and the end of the second screw rod away from the second head passes through the gasket 303 and is connected to the nut 302. The arrangement of the gasket 303 enables the nut 302 to effectively fix the second screw 306 and the motor bracket 305. The gasket 303 can abut against the end surface of the first step section facing the second step section, so that the nut 302 can be effectively connected to the second screw rod.

[0066] Optionally, the cross section of the elastic member 304 in the extension direction of the second screw rod may be in an "I" shape, so that the elastic member 304 can be reliably engaged with the mounting hole. The material of the elastic member 304 can be designed as needed, for example, it can be silicone, which has the advantages of not only good elasticity but also high temperature resistance and high hardness, so that when high heat is generated inside the lamp, the elastic member 304 can still maintain good performance characteristics, thereby facilitating the improvement of the reliability of the modular focusing structure 1000.

[0067] Optionally, multiple lamp beads in the lamp can be arranged on the side of the substrate 400 facing the lens housing 120, and the multiple lamp beads are arranged one by one with the multiple lenses 107, so that when the focus drive assembly 300 drives the screw rod 102, the lens housing 120 can be close to or away from the substrate 400, and the lens 107 arranged in the lens housing 120 can also be close to or away from its corresponding lamp bead, thereby achieving focal length adjustment and changing the effect of the light emitted by the lamp. Therefore, when the lens housing 120 drives the lens 107 to approach or move away from the lamp bead, the modular focus structure 1000 can achieve the focus function.

[0068] Optionally, the above-mentioned lamp bead can be a single lamp bead or can be composed of multiple small lamp beads, and the structures of the multiple lamp beads can be the same or different.

[0069] Further, in one embodiment, in combination with FIGS. 1 to 4 , the modular focusing structure 1000 further includes a substrate 400 and a Hall element 500, wherein the substrate 400 and the plurality of lead screws 102 are disposed on the same side of the lens housing 120, and the substrate 400 and the lens housing 120 are spaced apart. The Hall element 500 and the focusing drive assembly 300 are both disposed on the substrate 400. The lens assembly 100 further includes a magnetic member 110, which is disposed on the lens housing 120, and the magnetic member 110 and the Hall element 500 are disposed opposite to each other. The Hall element 500 and the magnetic member 110 are used for focusing positioning. Specifically, when the focusing drive assembly 300 drives the lens assembly 100 to move, the magnetic member 110 can approach or move away from the Hall element 500. Wherein, when the magnetic member 110 moves toward the side close to the Hall element 500 and the Hall element 500 senses the magnetic member 110, the Hall element 500 can control the focusing drive assembly 300 to stop driving the lens assembly 100. Therefore, the Hall element 500 and the magnetic component 110 can limit the position of the lens housing 120 closest to the substrate 400, and then control the movement of the lens housing 120 within the focusing stroke, ensuring that the structure in the lens assembly 100 will not collide with the substrate 400 and other structural components arranged on the substrate 400, which is beneficial to ensuring the reliability and safety of the modular focusing structure 1000.

[0070] Optionally, as shown in FIG. 3 , the magnetic member 110 is connected to the first housing 106 via a focus positioning rod 109. Specifically, the focus positioning rod 109 is disposed on a side of the first housing 106 away from the second housing 108, and the extension direction of the focus positioning rod 109 may be substantially parallel to the extension direction of the lead screw 102. One end of the focus positioning rod 109 is connected to the first housing 106, and the other end is connected to the magnetic member 110.

[0071] Optionally, the magnetic member 110 may be a magnet, such as a samarium cobalt magnet.

[0072] Optionally, the Hall element 500 can be connected to a side of the substrate 400 facing the first housing 106 by focusing and positioning the Hall plate and a Hall plate mounting bracket.

[0073] An embodiment of the present application further provides a lamp, which includes the modular focusing structure 1000 in any of the above embodiments.

[0074] In the above-mentioned lamp, the fixing flange 103 is connected to the lens housing 120, and one end of the screw rod 102 is connected to the fixing flange 103, so that the screw rod 102 can be effectively connected to the lens housing 120 through the fixing flange 103. The screw rod 102 is drivingly connected to the focus drive assembly 300, so that when the focus drive assembly 300 is driven, the screw rod 102 can drive the lens assembly 100 to move along the extension direction of the screw rod 102, thereby realizing the focusing function of the modular focusing structure 1000. Compared with the traditional focusing structure in which the screw rod 102 is connected to the housing assembly through the screw rod flange and the fixed sheet metal, the modular focusing structure 1000 can effectively simplify the connection structure between the screw rod 102 and the lens housing 120, thereby improving the assembly efficiency of the modular focusing structure 1000, and making the structure of the modular focusing structure 1000 more compact, which is conducive to realizing the miniaturization of the modular focusing structure 1000.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A modular focusing structure, characterized in that: include: A lens assembly, the lens assembly comprising a lens housing, a plurality of fixing flanges and a plurality of screw rods, the plurality of fixing flanges being arranged at intervals on the lens housing, and the plurality of fixing flanges being connected to one end of the plurality of screw rods in a one-to-one correspondence; A plurality of focus drive assemblies are arranged at intervals from the lens housing, and the plurality of focus drive assemblies are drive-connected to the plurality of lead screws in a one-to-one correspondence, and the focus drive assembly is used to drive the lens assembly to approach or move away from the focus drive assembly along the extension direction of the lead screw.

2. The modular focusing structure according to claim 1, characterized in that: The lens housing includes a first housing and a second housing, the fixing flange is arranged on a side of the first housing facing away from the second housing, the lens assembly also includes a first screw, the first screw includes a first head and a first screw rod, the first head is arranged on a side of the first housing facing away from the second housing, and an end of the first screw rod facing away from the first head passes through the first housing and is connected to the second housing.

3. The modular focusing structure according to claim 2, characterized in that: The first shell is provided with a plurality of first accommodating grooves, and the second shell is provided with a plurality of second accommodating grooves, and the plurality of first accommodating grooves correspond one-to-one with the plurality of second accommodating grooves to form a plurality of accommodating spaces. The lens assembly also includes a plurality of lenses, and a step portion is provided on the outer periphery of the lens, and the step portion includes a first surface and a second surface which are arranged opposite to each other along the thickness direction of the lens. The plurality of lenses are installed one-to-one in the plurality of accommodating spaces, and the first surface abuts against the notch of the first accommodating groove, and the second surface abuts against the notch of the second accommodating groove.

4. The modular focusing structure according to claim 3, characterized in that: A plurality of light guide covers are disposed on a side of the first shell facing away from the second shell. The light guide covers are formed with light guide holes. The plurality of light guide holes are connected to the plurality of first accommodating grooves in a one-to-one correspondence.

5. The modular focusing structure according to claim 4, characterized in that: The inner diameter of the light guide hole gradually decreases from an end close to the second shell to an end away from the second shell; And / or, the light guide cover is provided with an avoidance groove, and when the lens assembly moves toward or away from the focus drive assembly, the focus drive assembly can penetrate into or exit from the avoidance groove.

6. The modular focusing structure according to claim 1, characterized in that: The lens assembly also includes a plurality of focus slides arranged at intervals, wherein the plurality of focus slides and the plurality of lead screws are arranged on the same side of the lens housing, the plurality of focus slides and the plurality of lead screws are arranged at intervals, and the extension direction of the focus slides is parallel to the extension direction of the lead screws, and one end of the focus slide is connected to the lens housing; the modular focusing structure also includes a plurality of guide sleeve assemblies, and the guide sleeve assemblies are slidably connected to the focus slides in a one-to-one correspondence.

7. The modular focusing structure according to claim 6, characterized in that: The lens housing is provided with a slide rod hole, the inner surface of the slide rod hole includes two first matching planes arranged opposite to each other; the outer surface of the focus slide rod is provided with two second matching planes arranged opposite to each other, the first matching planes abut against the second matching planes in a one-to-one correspondence; And / or, the guide sleeve assembly includes a guide sleeve fixing seat and a sliding sleeve, the guide sleeve fixing seat is provided with a guide sleeve through hole, the sliding sleeve is arranged in the guide sleeve through hole, and the sliding sleeve is slidably connected to the focusing slide rod.

8. The modular focusing structure according to claim 6, characterized in that: The modular focusing structure also includes a substrate, the substrate and the multiple lead screws are all arranged on the same side of the lens housing, and the substrate and the lens housing are spaced apart, and the guide sleeve assembly is arranged on the substrate; the focusing drive assembly includes a driving motor, a motor bracket, an elastic member, a second screw and a nut, the driving motor is arranged on the motor bracket and is drivingly connected to the lead screw, a mounting hole is opened on the motor bracket, the elastic member is ring-arranged in the mounting hole, the second screw includes a second head and a second screw, the second head is arranged on the substrate, and the end of the second screw away from the second head passes through the motor bracket and the elastic member and is threadedly connected to the nut.

9. The modular focusing structure according to claim 1, characterized in that: The modular focusing structure also includes a substrate and a Hall element. The substrate and the multiple screw rods are arranged on the same side of the lens housing, and the substrate and the lens housing are spaced apart. The Hall element and the focusing drive assembly are both arranged on the substrate. The lens assembly also includes a magnetic component, which is arranged on the lens housing, and the magnetic component is arranged opposite to the Hall element.

10. A lamp, characterized in that: The modular focusing structure comprises the modular focusing structure as described in any one of claims 1 to 9.

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