CN219122560U - Projector focusing structure and projector - Google Patents

Abstract

The utility model relates to a projector focusing structure and a projector. The projector focusing structure comprises an adjusting rod and a pinion, the pinion is arranged in a projector shell, an adjusting rod part is fixed in the projector shell, the inner end of the adjusting rod is inserted into the pinion and used for driving the pinion to rotate around the axis of the adjusting rod, the pinion is meshed with a focusing gear of a projector lens, and the outer end of the adjusting rod is a manual adjusting end and penetrates out of the projector shell. According to the utility model, the focusing function is realized by driving the pinion and the pinion to drive the focusing gear through the adjusting rod, only the adjusting rod can penetrate out of the shell, and the penetrating hole of the adjusting rod is relatively smaller, so that the sealing design is improved, and the product quality is improved; and because the pinion drives the larger focusing gear, the relative labor is saved during focusing, and the number of turns required to rotate is more, so that an operator can control the focusing speed and the focusing accuracy more easily, and the convenience of use is improved.

Description

Projector focusing structure and projector

Technical Field

The utility model relates to projection equipment, in particular to a projector focusing structure and a projector.

Background

A projector is a device that can project images or video onto a curtain or wall. The basic principle of the projector is that light is firstly irradiated onto an image display element to generate an image, and then the image is projected through a lens. The projection of the lens rays onto a plane generally requires focusing to see the image. Projector lens focusing on the market is classified into automatic focusing and manual focusing. Autofocus is typically a focus ring that requires a sensor to detect whether the lens is in focus or not and a motor to drive the lens, and therefore the cost of autofocus is relatively high, while the cost of manual focus mechanisms is typically low. Chinese patent ZL201820231825.8 discloses a projector, which focuses by opening a focusing opening above a housing, exposing a focusing wheel at the focusing opening, and rotating the focusing wheel left and right. Chinese patent ZL202121404966.3 discloses a projector, and it has offered the regulating frame in the side, and the regulating frame has exposed a part of adjusting gear, can focus the operation through manual stirring adjusting gear. The two structures are the most common manual focusing structural forms of the projector, a large operation port is formed in the top surface or the side surface of the projector to expose enough adjusting gears, the adjusting gears are provided with a plurality of anti-skid grooves, the sealing design is not facilitated, the design integrity of the whole machine shell is destroyed, the large focusing wheel can be directly stirred by a single finger for focusing, the control is not easy, the head is extremely easy to adjust during focusing, and sometimes the head needs to be repeatedly adjusted to focus accurately for several times, so that the improvement is needed.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a projector focusing structure and a projector, which are beneficial to sealing design and enable focusing to be controlled more easily.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a projecting apparatus focusing structure, its includes adjusts pole and pinion, and the pinion is established in the projecting apparatus shell, adjusts the pole part and is fixed in the projecting apparatus shell, adjusts the inner of pole and inserts the pinion and be used for driving the pinion and rotate around adjusting the pole axis, and the pinion forms the meshing with the focusing gear of projecting apparatus camera lens, adjusts the outer end of pole and is manual regulation end and wears out outside the projecting apparatus shell.

Further, the focusing structure further comprises a support, the support is fixed on a light source generator where the projector lens is located, and the adjusting rod and the pinion are fixed on the support.

Further, the support comprises a supporting part, the supporting part is attached to and fixed with the light source generator, and the adjusting rod and the pinion are fixed on the supporting part.

Further, the support also comprises a fixing part, the supporting part is fixedly connected with the fixing part, and the fixing part is fixedly connected with the front surface of the light source generator.

Further, in the length direction of the adjusting rod, one end of the supporting part is provided with a supporting cylinder, the other end of the supporting part is provided with a first semicircular groove, the inner end of the adjusting rod penetrates through the supporting cylinder, and the adjusting rod is placed in the first semicircular groove.

Further, two clamping holes are formed in two sides of the first semicircular groove, a pressing plate is arranged on the clamping holes, clamping tongues are respectively arranged on two sides of the pressing plate and are respectively inserted into the clamping holes to form clamping connection and fixation, and the pressing plate is used for limiting the adjusting rod in the first semicircular groove.

Further, a second semicircular groove is further formed between the first semicircular groove and the supporting cylinder, the first semicircular groove, the supporting cylinder and the second semicircular groove are coaxial, the adjusting rod is also arranged in the second semicircular groove, the pinion is arranged on one side, facing the second semicircular groove, of the supporting cylinder, and the end face of the pinion abuts against the side face of the vertical plate where the second semicircular groove is located.

Further, a knob handle is fixed at the outer end of the adjusting rod.

Further, the outer end of the adjusting rod penetrates out of the inner wall of a horizontal concave handle groove of the projector shell.

The utility model also discloses a projector, which comprises the projector focusing structure.

Compared with the prior art, the utility model has the beneficial effects that: the focusing function is realized by driving the pinion and the pinion to drive the focusing gear through the adjusting rod, only the adjusting rod can penetrate out of the shell, the hole penetrated out by the adjusting rod is relatively smaller, the sealing design is improved, and the product quality is improved; and because the pinion drives the larger focusing gear, the relative labor is saved during focusing, and the number of turns required to rotate is more, so that an operator can control the focusing speed and the focusing accuracy more easily, and the convenience of use is improved.

The foregoing description is only an overview of the present utility model, and is intended to be more clearly understood as being carried out in accordance with the following description of the preferred embodiments, as well as other objects, features and advantages of the present utility model.

Drawings

Fig. 1 is a perspective view showing an internal structure of a projector according to the present utility model.

Fig. 2 is an exploded view of the internal structure of the projector according to the present utility model.

Fig. 3 is a rear perspective view of the projector of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

An embodiment of the present utility model is a focusing structure 110, which is shown in fig. 1-3. The focusing structure 110 of the embodiment of the present utility model is mounted in an electronic device, which is a projector. Of course, in other embodiments, if the electronic device projects light from the lens to the outside, and adjusts the front and rear positions of the lens through the focusing gear at the periphery of the lens, the focusing structure of the embodiment of the present utility model, such as a spotlight capable of focusing, may be used.

Focusing structure 110 of an embodiment of the present utility model is described in detail below by way of a projector as an example with reference to the accompanying drawings.

In some embodiments, as shown in fig. 1 and 2, the focusing structure 110 includes an adjustment lever 111 and a pinion 112. The pinion 112 is engaged with a focusing gear 109 of the projector lens 108, and the focusing gear 109 is sleeved outside the lens 108 of the light source generator 107 (i.e., the optical machine of the projector). The position of the lens 108 inside the lens of the light source generator 107 can be adjusted by rotating the focusing gear 109, so as to adjust the focal length, and the specific structure is designed as a conventional technology, which is not described herein. The adjustment lever 111 may be made of metal, such as iron. As shown in fig. 1 and 2, the inner end 1111 of the adjustment rod 111 is inserted into the pinion 112 and is configured to rotate the pinion 112 about the axis of the adjustment rod 111. Specifically, the outer surface of the inner end 1111 of the adjusting rod 111 is knurled, and when the inner end 1111 of the adjusting rod 111 is correspondingly inserted into the hole in the pinion 112, the inner end 1111 of the adjusting rod 111 is in tight fit with the hole, so that the adjusting rod 111 can directly drive the pinion 112 to rotate. In other embodiments, the shaft hole transmission structure of the inner end of the adjusting rod and the middle hole of the pinion can be replaced by other conventional transmission structures, such as a D-shaped shaft-hole transmission structure or a key transmission structure.

As shown in fig. 3, the outer end 1112 of the adjusting lever 111 serves as a manual adjusting end and protrudes out of the projector housing 101, i.e., the adjusting lever 111 is partially fixed inside the projector housing 101, while the pinion 112 (fig. 2) is provided inside the projector housing 101, so that only the adjusting lever 111 penetrates the housing 101 and the focus gear 109 (fig. 2) is not required to be exposed from the projector housing 101, the size of the adjusting lever 111 is relatively small, and thus the area required to be sealed between the adjusting lever 111 and the housing 101 is relatively small, and the seal design is easily improved to improve the product quality. And because the housing 101 does not need to provide a large adjustment opening in the top/side for exposing the focusing gear 109 (fig. 2), the integrity of the housing 101 is improved and the appearance is more attractive.

In some embodiments, as shown in fig. 1 and 2, the diameter of the pinion 112 is smaller than one third of the diameter of the projector focusing gear 109, so that the focusing structure 110 of the present utility model is relatively more labor-saving and requires more rotation turns during focusing than the structure of directly pulling the focusing gear 109, thereby making it easier for an operator to control the focusing speed and accuracy, and improving the convenience of use. In other embodiments, if the pinion diameter is smaller than the pinion diameter of fig. 1 and 2, then more revolutions are required during focusing, and the focusing speed is relatively slower; if the pinion diameter is larger than the pinion diameter of fig. 1 and 2, the number of rotations during focusing is relatively small, and the focusing speed is relatively high.

In some embodiments, as shown in fig. 1 and 2, the focusing structure 110 further includes a holder 120. The bracket 120 may be made of hard plastic or aluminum or steel. The bracket 120 is fixed to the light source generator 107 where the projector lens 108 is located, and the adjustment lever 111 and the pinion 112 are both fixed to the bracket 120. As shown in fig. 1 and 2, the bracket 120 includes an integrally formed supporting portion 121 and a fixing portion 122, the supporting portion 121 and the fixing portion 122 are fixedly connected perpendicular to each other, the supporting portion 121 is attached to the projector light source generator 107, the fixing portion 122 is fixedly connected to the front surface of the projector light source generator 107 by screws, and the adjusting lever 111 and the pinion 112 are both fixed on the supporting portion 121. A square hole 1221 is provided in the middle of the fixing portion 122, and the square hole 1221 is provided for the lens 108 of the projector to pass through.

In some embodiments, as shown in fig. 1 and 2, in the length direction of the adjusting rod 111, a supporting cylinder 123 is disposed at one end of the supporting portion 121, a first semicircular groove 1211 is disposed at the other end, a second semicircular groove 1213 is further disposed between the first semicircular groove 1211 and the supporting cylinder 123, and the first semicircular groove 1211, the supporting cylinder 123 and the second semicircular groove 1213 are coaxial. The adjusting rods 111 are respectively placed in the first semicircular groove 1211 and the second semicircular groove 1213, the inner ends 1111 of the adjusting rods 111 penetrate through the supporting cylinder 123, the pinion 112 is arranged on one side of the supporting cylinder 123 facing the second semicircular groove 1213, and the end face 1121 of the pinion 112 abuts against the side face of the vertical plate 1214 where the second semicircular groove 1213 is located. The first semicircular groove 1211, the second semicircular groove 1213 and the supporting cylinder 123 support the adjustment rod 111, and the pinion 112 is sandwiched by the vertical plate 1214 and the supporting cylinder 123 in which the second semicircular groove 1213 is located, thereby restricting the axial movement of the adjustment rod 111.

In some embodiments, as shown in fig. 1 and 2, two clamping holes 1212 are provided on two sides of the first semicircular slot 1211, a pressing plate 124 is provided on the clamping hole 1212, two clamping tongues 1241 are provided on two sides of the pressing plate 124, and the clamping tongues 1241 are respectively inserted into the clamping holes 1212 to form a clamping fixation. The pressing plate 124 can thus restrict the adjustment lever 111 to the first semicircular groove 1211. The pressing plate 124 and the supporting cylinder 123 limit the freedom of movement of the adjusting rod 111 in the vertical axial direction, the inner end 1111 of the adjusting rod 111 is tightly matched with the pinion 112, and the pinion 112 is limited between the second semicircular groove 1213 and the supporting cylinder 123, so that the freedom of linear movement of the adjusting rod 111 in the axial direction is limited, and the adjusting rod 111 can only rotate around the axis thereof.

In some embodiments, as shown in fig. 1 and 2, the support portion 121 of the stand 120 is disposed above the light source generator 107, which facilitates the mounting and fixing of the stand 120 without increasing the lateral size of the overall projector. However, in other embodiments, the supporting parts of the bracket can be arranged on the left side and the right side of the light source generator, and the adjusting rod and the pinion are arranged along with the supporting parts, so that the focusing function can be realized.

In some embodiments, the outer end 1112 of the adjustment rod 111 has a knob handle 113 secured thereto. The outer end 1112 of the adjusting rod 111 is provided with knurling, and the rotating handle 113 is fixedly connected with the adjusting rod 111 in a tight fit. The rotation handle 113 can be pressed by a plurality of fingers and rotated during focusing, so that the adjustment lever 111 can be driven to rotate. As shown in fig. 3, the outer end 1112 of the adjusting rod 111 is penetrated from the inner wall 103 of a horizontally concave handle groove 102 of the projector housing 101, so that the through hole 104 penetrated from the housing 101 by the adjusting rod 111 is hidden inside the handle groove 102, thereby preventing the through hole 104 from being directly exposed, improving the appearance and further improving the sealing condition.

In other embodiments, the adjusting rod can be made into a telescopic rod, when focusing is needed, the adjusting rod is lengthened to rotate for focusing, when focusing is not needed, the adjusting rod is retracted to reduce the length of the adjusting rod extending out of the adjusting rod, the adjusting rod can be prevented from being blocked by the shell when being rotated, and meanwhile portability when focusing is not needed is improved.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.

The foregoing examples are provided to further illustrate the technical contents of the present utility model for the convenience of the reader, but are not intended to limit the embodiments of the present utility model thereto, and any technical extension or re-creation according to the present utility model is protected by the present utility model. The protection scope of the utility model is subject to the claims.

Claims (10)

1. The utility model provides a projecting apparatus focusing structure, its characterized in that includes regulation pole and pinion, the pinion is established in the projecting apparatus shell, regulation pole part is fixed in the projecting apparatus shell, the inner of adjusting the pole inserts the pinion and is used for driving the pinion and rotate around adjusting the pole axis, the pinion forms the meshing with the focusing gear of projecting apparatus camera lens, the outer end of adjusting the pole is manual regulation end and wears out outside the projecting apparatus shell.

2. The projector focus-setting architecture of claim 1, further comprising a bracket, said bracket being fixed to a light source generator where a projector lens is located, said adjustment lever and pinion being both fixed to the bracket.

3. The projector focus-adjusting mechanism of claim 2, wherein said bracket includes a support portion that is attached to said light source generator, and said adjustment lever and pinion are both fixed to said support portion.

4. The projector focus-setting architecture of claim 3, wherein said bracket further comprises a fixedly connected portion, said support portion and said fixedly connected portion being fixedly connected to each other, said fixedly connected portion being fixedly connected to a front surface of said light source generator.

5. A projector focus-adjusting mechanism as defined in claim 3, wherein in a length direction of said adjustment lever, a support cylinder is provided at one end of said support portion, a first semicircular groove is provided at the other end, an inner end of said adjustment lever penetrates said support cylinder, and said adjustment lever is placed in said first semicircular groove.

6. The focusing structure of claim 5, wherein two clamping holes are formed on two sides of the first semicircular groove, a pressing plate is arranged on each clamping hole, clamping tongues are respectively arranged on two sides of each pressing plate, each clamping tongue is respectively inserted into each clamping hole to form clamping connection and fixing, and each pressing plate is used for limiting the adjusting rod in the first semicircular groove.

7. The focusing structure of claim 5, wherein a second semicircular groove is further provided between the first semicircular groove and the supporting cylinder, the first semicircular groove, the supporting cylinder and the second semicircular groove are coaxial, the adjusting rod is also placed in the second semicircular groove, the pinion is arranged on one side of the supporting cylinder facing the second semicircular groove, and the end face of the pinion abuts against the side face of the vertical plate where the second semicircular groove is located.

8. The projector focusing mechanism as defined in any one of claims 1 to 7, wherein a knob is fixed to an outer end of the adjustment lever.

9. The projector focus-setting architecture of any one of claims 1-7, wherein an outer end of said adjustment lever protrudes from an inner wall of a horizontal recessed handle slot of the projector housing.

10. Projector, characterized in that it comprises a projector focusing structure according to any one of claims 1 to 9.

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