CN208506471U - Focus control - Google Patents

Abstract

This application discloses focus controls.In one embodiment, which includes main body rack, slide switch, drive block and focusing lever, and slide switch can be mounted in main body rack relative to main body rack linear movement in a first direction；Drive block is movably installed in main body rack and can slidably couple relatively with slide switch, and can by slide switch drive relative to main body rack in the second direction vertical with first direction linear movement；Focusing lever is movably installed in main body rack and can slidably couple relatively with drive block, and can be driven by drive block relative to main body rack linear movement in a first direction.It, can be by two-stage linkage come large scale linear scale focusing stroke, to guarantee focus control miniaturization while realizing focusing function using the focus control and focus adjustment method according to the application.

Description

Focus control

Technical field

This application involves optical focusing fields, and in particular to focus control and focus adjustment method for projector.

Background technique

As micro projector is more more and more universal, requirement of the user to the function of projector is higher and higher, such as focusing function Energy.On the other hand, for the ease of carrying, the outer dimension of projector needs small as far as possible.

Currently, it is all using gear rotation focusing that the focus control of existing projector is most of on the market.However, being based on The focus control size of the mechanism is larger, the width spaces of about 12mm in projector is generally taken up, so as to cause projector Outer dimension is larger.

Therefore, it is necessary to design a kind of focus control for being both able to achieve focusing and having ensured that projector miniaturization.

Utility model content

This application provides be suitable for projector, the focusing of at least one drawbacks described above in the prior art can be overcome to fill It sets and focus adjustment method.

The first aspect of the application provides such a focus control, which includes: main body rack；Sliding is opened It closes, can be mounted in the main body rack relative to the main body rack linear movement in a first direction；Drive block, can It is movably mounted in the main body rack and can slidably couple relatively with the slide switch, and can be by the cunning Dynamic switch drive linear movement in the second direction vertical with the first direction relative to the main body rack；And focusing Bar is movably installed in the main body rack and can slidably couple relatively with the drive block, and can be by institute Drive block is stated to drive relative to main body rack linear movement in said first direction.

In certain optional embodiments of this aspect, lengthwise is provided on the slide switch and is obliquely extended One sliding rail；And the first sliding part that can be slided along first sliding rail is attached on the drive block.

In certain optional embodiments of this aspect, first sliding rail is the inner surface set on the slide switch In first sliding groove or the first elongated through hole；And first sliding part is to protrude from the respective side surface of the drive block Sliding block, the sliding block can slide in the first sliding groove or the first elongated through hole.

In certain optional embodiments of this aspect, lengthwise is provided on the drive block and is obliquely extended second Sliding rail；And the focusing lever can be slided along second sliding rail.

In certain optional embodiments of this aspect, second sliding rail is in the inner surface of the drive block Second sliding slot or the second elongated through hole；And the focusing lever can be in the second sliding slot or the second elongated through hole Sliding.

In certain optional embodiments of this aspect, boss is attached on the slide switch, the main body rack Boss contact surface is provided on the surface contacted with the slide switch；And the boss can be on the boss contact surface Sliding, the contact surface between the boss and the boss contact surface are set as coarse.

The second aspect of the application provides such a focus adjustment method, which includes: to push focus control Slide switch, so that main body rack in a first direction linear movement of the slide switch relative to the focus control；It is logical The sliding for crossing the slide switch drives the drive block of the slide switch and the focus control that opposite sliding occurs, thus Drive the drive block relative to the main body rack linear movement in the second direction vertical with the first direction；Pass through The sliding of the drive block drives the focusing lever of the drive block and the focus control that opposite sliding occurs, to drive institute Focusing lever is stated relative to main body rack linear movement in said first direction.

In certain optional embodiments of this aspect, drive the slide switch and the drive block that opposite sliding occurs It include: to drive the first sliding part being attached on the drive block along lengthwise and be obliquely arranged on the slide switch The sliding of first sliding rail.

In certain optional embodiments of this aspect, drive the slide switch and the drive block that opposite sliding occurs It include: the driven from the sliding block that the respective side surface of the drive block protrude in the inner surface set on the slide switch It is slided in one sliding slot or the first elongated through hole.

In certain optional embodiments of this aspect, drives the drive block and the focusing lever that opposite sliding occurs and wrap It includes: driving the focusing lever along lengthwise and the sliding of the second sliding rail on the drive block is obliquely set.

In certain optional embodiments of this aspect, drives the drive block and the focusing lever that opposite sliding occurs and wrap Include: drive the focusing lever in the inner surface for being set to the drive block second sliding slot or the second elongated through hole in it is sliding It is dynamic.

Using the technical solution of the application, by two-stage linkage, linear scale is focused stroke in a large proportion, so that focusing dress It sets and guarantees that focus control is compact in size while realizing reliable focusing function.

Detailed description of the invention

In conjunction with attached drawing, by the detailed description of following non-limiting embodiment, other features, purpose and excellent Point will become apparent.In the accompanying drawings:

Fig. 1 is the exploded perspective view for showing the focus control according to the application；

Fig. 2 is the exploded perspective view for showing the part of the realization level-one focusing movements according to the focus control of the application；

Fig. 3 is the exploded perspective view for showing the part of the realization second level focusing movements according to the focus control of the application；

Fig. 4 is the exploded perspective view of the assembly relation between each section shown according to the focus control of the application；And

Fig. 5 is the perspective view for schematically showing boss and boss contact surface according to the focus control of the application.

Specific embodiment

It is described in detail below in conjunction with various aspects of the attached drawing to the application, to more fully understand the application.It answers Understand, these specific descriptions are only the explanations to the illustrative embodiments of the application, without limiting the scope of the present application.

In this specification in the whole text and in whole attached drawings, identical appended drawing reference indicates identical element.For ease of description, Part relevant to technical theme is only shown in attached drawing.In addition, in the accompanying drawings, for ease of description, may exaggerate some elements, The size and shape of part or part.Attached drawing is merely illustrative and and non-critical drawn to scale.

Specific embodiment is combined to further describe the application below with reference to accompanying drawings.

This application involves focus control and its focus adjustment methods, are mainly used in projector, specifically, pass through the two-stage of linkage Focusing movements realize focusing in particular by based on the two-stage linear scale of straight line and ramp arrangement.

Firstly, by the two-stage coordinated type focus control referring to figs. 1 to Fig. 3 description according to the application.

Fig. 1 is the exploded perspective view for showing the focus control 100 according to the application.As shown in Figure 1, according to the tune of the application Coke installation 100 includes: main body rack 110, slide switch 120, drive block 130 and focusing lever 140.

Main body rack 110 can be a part of total frame of whole system (such as projector) or be to be rigidly attached to The independent component of total frame of system.For example, in the example of fig. 1, main body rack 110 is attached at projector as independent component Ray machine 112 side.Main body rack 110 is kept fixed, and is contained in main body rack 110 or is attached to main body rack 110 Moving element can be moved relative to main body rack 110.That is, main body rack 110 is the work directly or indirectly coupled The movement of dynamic element provides bearing.

Slide switch 120 can be mounted on main body branch relative to 110 linear movement of main body rack in the first direction dl In frame 110, it is allowed to be converted to focusing movements from external driving power to receive and transmit.

Specifically, such as shown in Figure 1, slide switch 120 is set as strip and has to respectively lead to projector Outer surface and inner surface outwardly and inwardly.In order to facilitate user's operation, it is provided on the outer surface of slide switch 120 Handle part, such as hold key.When being focused, user pushes the D1 in a first direction of slide switch 120 using handle part It is slided in upper linear slide, such as D1 in the horizontal direction as shown in Figure 1.

In order to support the sliding of slide switch 120, settable sliding rail or guide part on main body rack 110.For example, sliding is opened The inside for closing 120 can be horizontally equipped with the recess of form of straight lines, the surface of main body rack 110 contacted with slide switch 120 The protruding rail of corresponding form of straight lines can be equipped on (i.e. outer surface), protruding rail is slideably stuck in recess that sliding is guided to open 120 are closed to slide relative to main body rack 110.However, the guide frame is only exemplary rather than limitation；It can be used according to design requirement It is able to achieve other alternative mechanisms of identical function.

Drive block 130 is movably installed in main body rack 110 and can slidably join relatively with slide switch 120 It connects, and can be driven by slide switch 120 relative to main body rack 110 on the second direction D2 vertical with first direction D1 Linear movement.It is such to drive the movement of drive block 130 to be also referred to as level-one focusing movements by slide switch 120.

For example, as shown in Figure 1, drive block 130 is connected in sliding as the intermediary element for passing movement and opens in bulk It closes between 120 and focusing lever 140, and itself can be moved on such as vertical direction D2 in main body rack 110.Specifically, Drive block 130 is movably mounted to move it can only on vertical direction D2, i.e., drive block 130 exists Retard motion on horizontal direction D1.For example, at least two block pieces can be arranged along horizontal direction D1 in main body rack 110, The respective circumferential surface for abutting drive block 130 respectively makes the horizontal movement of drive block 130 be obstructed.It should be understood, however, that this is only Example rather than limit.

It is noted that although first direction D1 and second direction D2 are respectively depicted as horizontal direction and vertical above Direction, but this is only example；For example, in alternative embodiments, can separately orient according to demand.

Referring to Fig. 2 specific explanations for realizing the opposite fortune between the element of level-one focusing movements and these elements It is dynamic.Fig. 2 is the exploded perspective view for showing the part of the realization level-one focusing movements according to the focus control 100 of the application.

In an alternate embodiment of the invention, the first sliding rail 122 for being provided with lengthwise on slide switch 120 and obliquely extending passes The first sliding part 132 that can be slided along the first sliding rail 122 is attached on motion block 130.Still optionally further, the first sliding rail 122 be first sliding groove or the first elongated through hole in the inner surface of slide switch 120, the first sliding part 132 be from The sliding block 132 of the respective side surface protrusion of drive block 130, sliding block 132 can be slided in first sliding groove or the first elongated through hole It is dynamic.

In the figure 2 example, elongated through hole (as the first sliding rail 122) is offered on slide switch 120, relative to Horizontal direction D1 is obliquely extended linearly.The outer surface of drive block 130 is protruding with cylindric sliding block 132.The outer diameter of sliding block 132 It can be with the first sliding rail of cellular type 122 in size corresponding with the size on the vertical direction of its extending direction, so that sliding block 132 can Opposite sliding occurs in the first sliding rail of cellular type 122.By the cooperation between the first sliding rail 122 and sliding block 132, it can be achieved that level-one Stroke linear scaling movement.In addition, the slope and length of the first sliding rail 122 can change according to the requirement of different product, thus Obtain a variety of different stroke scalings of designer's needs.

Specifically, when carrying out linear reciprocal movement on user's promotion slide switch 120 in the horizontal direction D1, slide switch Opposite sliding occurs between the first sliding rail 122 on 120 and the sliding block 132 of drive block 130, since drive block 130 is in level side Retard motion on D1, the opposite sliding force drive block 130 back and forth to be transported on vertical direction D2 in main body rack 110 It is dynamic.

Focusing lever 140 is movably installed in main body rack 110 and can slidably couple relatively with drive block 130, And it can be driven by drive block 130 relative to the linear movement in the first direction dl of main body rack 110.It is such by drive block The movement of 130 drive focusing levers 140 is also referred to as second level focusing movements.

Focusing lever 140 for example may be configured as with circular cross-section, but this is only example.Referring back to Fig. 1, for example, adjusting One end protrusion of burnt bar 140 with drive block 130 to couple to passing movement, and the other end of focusing lever 140 is in projector Portion is connected for realizing final focusing with ray machine 112.Specifically, focusing lever 140 can be in the frame of projector in the horizontal direction Retard motion of the movement to be focused and on vertical direction D2 on D1.

Referring to Fig. 3 specific explanations for realizing the opposite fortune between the element of second level focusing movements and these elements It is dynamic.Fig. 3 is the exploded perspective view for showing the part of the realization second level focusing movements according to the focus control 100 of the application.

In an alternate embodiment of the invention, the second sliding rail 134 for being provided with lengthwise on drive block 130 and obliquely extending；And Focusing lever 140 can be slided along the second sliding rail 134.Still optionally further, the second sliding rail 134 is in drive block 130 Second sliding slot or the second elongated through hole in side surface；And focusing lever 140 can run through in second sliding slot or the second elongated It is slided in hole.

In the example of fig. 3, elongated through hole (as the second sliding rail 134) is offered on drive block 130, relative to water It square is obliquely extended linearly to D1.The size of the second sliding rail of cellular type 134 on the direction vertical with its extending direction can be with The outer diameter of one end of the stretching of focusing lever 140 is corresponding, so that focusing lever 140 can occur relatively in the second sliding rail of cellular type 134 Sliding.By the cooperation between the second sliding rail 134 and focusing lever 140, it can be achieved that second level stroke linear scale moves.In addition, the The slope and length of two sliding rails 134 can change according to the requirement of different product, to obtain the various differences of designer's needs Stroke scaling.

Specifically, when drive block 130 moves back and forth on vertical direction D2 in main body rack 110, on drive block 130 The second sliding rail 134 and focusing lever 140 between opposite sliding occurs, due to movement of the focusing lever 140 on vertical direction D2 by Resistance, the opposite sliding force focusing lever 140 relative to moving back and forth on main body rack 110 in the horizontal direction D1.

It can be realized two-stage focusing movements through the above configuration, make it possible to providing the same of reliable and stable focusing function When so that focus control 100 is occupied projector engine space it is smaller, therefore be conducive to the miniaturization of entire projecting apparatus system.

In an alternate embodiment of the invention, there is contact damping between slide switch 120 and main body rack 110.It is further optional Ground is attached with boss 124 on slide switch 120, is provided on the surface of main body rack 110 contacted with slide switch 120 convex Platform contact surface 114；And boss 124 can slide on boss contact surface 114, between boss 124 and boss contact surface 114 Contact surface is set as coarse.

Boss 124 and boss contact surface 114 are described next, with reference to Fig. 4 and Fig. 5.Fig. 4 is the tune shown according to the application The exploded perspective view of assembly relation between each section of coke installation 100；Fig. 5 is to schematically show to be filled according to the focusing of the application Set 100 boss 124 and the perspective view of boss contact surface 114.

For example, as shown in figure 4, slide switch 120 is mounted in main body rack 110 and its boss 124 and main body rack 110 boss contact surface 114 contacts.Specifically, as shown in figure 5, boss 124 is set as sheet, and it is arranged in slide switch At 120 peripheral surface, such as it can be protruded relative to upper surface or lower surface.When slide switch 120 is in 110 middle line of main body rack Property sliding when, boss 124 slide on boss contact surface 114 and therefore generation frictional force (i.e. frictional damping).

It using the configuration, on the one hand can play the role of fixed 112 focusing lever 140 of ray machine, be unlikely to because of the external world It shakes and focusing lever 140 is caused to shift, to influence image sharpness；It on the other hand, can be with by the suitable damping of setting Ensure that user's feel in normal use is good, push-and-pull dynamics when specifically focusing allows user to feel comfortable.In addition, can basis User demand controls the size of frictional damping, such as adjustable boss 124 by controlling the surface roughness of above-mentioned contact surface Height different dampings is provided.

Next, focus adjustment method according to the application will be explained in detail in conjunction with specific embodiments.According to the focusing of the application Method can rely on above-mentioned focus control 100 to realize.

Focus adjustment method according to the application includes: the slide switch 120 for pushing focus control 100, so that slide switch 120 Main body rack 110 relative to focus control 100 linear movement in the first direction dl；Pass through the sliding of slide switch 120, band The drive block 130 of dynamic slide switch 120 and focus control 100 occurs to slide relatively, to drive drive block 130 relative to main body The linear movement on the second direction D2 vertical with first direction D1 of bracket 110；By the sliding of drive block 130, transmission is driven The focusing lever 140 of block 130 and focus control 100 occurs to slide relatively, to drive focusing lever 140 relative to main body rack 110 Linear movement in the first direction dl.

Below referring back to above-mentioned Fig. 1 to Fig. 3, in conjunction with specific embodiments come explain based on two-stage linkage focus adjustment method, It specifically will focus on the implementation method for explaining level-one focusing movements and second level focusing movements.

The focus adjustment method the following steps are included:

Step 1: user pushes slide switch 120 by handle part horizontally forward, so that slide switch 120 is in main body branch It is slided horizontally forward in frame 110；

Step 2: the cylindric sliding block 132 on drive block 130 is sent out in the first sliding rail of cellular type 122 in slide switch 120 Raw opposite sliding；

Step 3: since drive block 130 can only be moved in vertical direction D2, the phase between sliding block 132 and the first sliding rail 122 To the inclined design for sliding through the first sliding rail 122, drive block 130 is forced to move downward on vertical direction D2；

Step 4: opposite slide occurs in the second sliding rail of cellular type 134 in drive block 130 for focusing lever 140；

Step 5: since focusing lever 140 can only move on D1 in the horizontal direction, between focusing lever 140 and the second sliding rail 134 The opposite inclined design for sliding through the second sliding rail 134, force focusing lever 140 to travel forward on D1 in the horizontal direction.

It is noted that step 2 and step 3 realize level-one focusing movements (primary transmission), step 4 and step 5 It realizes second level focusing movements (secondary transmission), above-mentioned level-one focusing movements and second level focusing movements carry out and substantially together in linkage When carry out (therefore also known as two-stage link).It is moved and is transmitted by above-mentioned two-stage, so that the size of focus adjusting mechanism is small and exquisite, focusing It is reliable and stable.

In addition, it is noted that being described for pushing slide switch 120 horizontally forward above, when opposite Direction on (that is, after horizontal direction) when pushing slide switch 120, similarly execute the process opposite with the above process, herein not Repeated description.In addition, though step 1 is described in detail above to step 5, still, above-mentioned steps are only exemplary rather than limitation, For example, in alternative embodiments, the step of can adding or omit some steps or substitution can be used.

It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can To be combined with each other.

In herein in the whole text, term is not limited to meaning defined by literal go up, but is not departing from for example appended power of the application In the case that benefit requires the range limited, cover the different device for realizing same or similar function.

For example, the ordinal number noun of " first ", " second " etc. is only for distinguishing an element with another element, Without limiting its sequence or importance；The space relative terms of "upper", "lower" etc. are not limited to orientation shown in the drawings, but Including device being differently directed in use；Term "and/or" include any of one or more of related listed item and All combinations；Term "include", "comprise" and/or " having " indicate there is stated spy when used in this manual Sign, step, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, step, operation, member Part, component and/or combination thereof；Term " illustrative " is intended to indicate that example or illustration；Term " substantially ", " about " and Similar word indicates approximate rather than degree, and be intended to illustrate by by those skilled in the art will appreciate that, measured value or meter Inherent variability in calculation value；When describing the implementation of this application, term " can with " indicates that " one or more of the application is real Apply mode "；When after the list for appearing in listed feature, the term of such as "...... at least one" modifies entire list And the discrete component in non-list.In addition, in each embodiment of the application, unless in addition reversely point out, otherwise singular It may include plural reference.

It should be understood that unless otherwise defined, otherwise all terms (including technical terms and scientific terms) used herein All have meaning identical with the meaning that the application those of ordinary skill in the art are generally understood.In addition, term (such as The term defined in common dictionary) should be interpreted that with their consistent meanings of meaning in the context of related technologies, And not idealization or it is too formal in the sense that explain, unless herein clearly so limit.

It is further noted that unless explicitly, otherwise some steps described herein are not necessarily intended to according to writing Tandem occurs.For example, in some alternative embodiments, these steps can be with sequence on the contrary, concurrently sequence hair It is raw, or can omit or add certain steps.

Above description is only the better embodiment of the application and the explanation to present techniques principle.Art technology Personnel should be understood that application range involved in the application is not limited to skill made of the specific combination by above-mentioned technical characteristic Art scheme, in the case where not departing from the application design, the application should also cover by above-mentioned technical characteristic or its equivalent feature into Row any combination and the other technologies scheme formed.Such as features described above and the technology with similar functions disclosed herein Feature is replaced mutually and the technical solution that is formed.

Claims (6)

1. focus control characterized by comprising

Main body rack；

Slide switch can be mounted on the main body rack relative to the main body rack linear movement in a first direction In；

Drive block is movably installed in the main body rack and can slidably couple relatively with the slide switch, and And it can be driven by the slide switch online in the second direction vertical with the first direction relative to the main body rack Property it is mobile；And

Focusing lever is movably installed in the main body rack and can slidably couple relatively with the drive block, and It can be driven by the drive block relative to main body rack linear movement in said first direction.

2. focus control as described in claim 1, which is characterized in that

The first sliding rail for being provided with lengthwise on the slide switch and obliquely extending；And

The first sliding part that can be slided along first sliding rail is attached on the drive block.

3. focus control as claimed in claim 2, which is characterized in that

First sliding rail is first sliding groove or the first elongated through hole in the inner surface of the slide switch；And

First sliding part is the sliding block protruded from the respective side surface of the drive block, and the sliding block can be described first It is slided in sliding slot or the first elongated through hole.

4. focus control as claimed in claim 1 or 2, which is characterized in that

The second sliding rail for being provided with lengthwise on the drive block and obliquely extending；And

The focusing lever can be slided along second sliding rail.

5. focus control as claimed in claim 4, which is characterized in that

Second sliding rail is second sliding slot or the second elongated through hole in the inner surface of the drive block；And

The focusing lever can slide in the second sliding slot or the second elongated through hole.

6. focus control as described in claim 1, which is characterized in that

It is attached with boss on the slide switch, is provided on the surface of the main body rack contacted with the slide switch convex Platform contact surface；And

The boss can slide on the boss contact surface, the contact surface between the boss and the boss contact surface It is set as coarse.