WO2022033383A1 - Lens adjusting device and projection apparatus - Google Patents

Abstract

A lens adjusting device and a projection apparatus. The lens adjusting device comprises a lens support (1), an adjusting support (2), a first direction adjusting assembly (3), a second direction adjusting assembly (4), a guide arm (5), an upper cover (6) and a shell body (7), wherein the first direction adjusting assembly (3) and the second direction adjusting assembly (4) are arranged on the upper cover (6), and the lens support (1), the adjusting support (2) and the guide arm (5) are accommodated in a space formed by the upper cover (6) and the shell body (7); and the first direction adjusting assembly (3) drives the lens support (1) to slide in a first direction, the second direction adjusting assembly (4) and the guide arm (5) drive the adjusting support (2) to rotate, the lens support (1) moves in a second direction, and the first direction is perpendicular to the second direction. By means of the lens adjusting device, the adjusting assemblies are used for making the lens move in one direction, the guide arm (5) drives the lens to rotate, and a component forms a movement in another direction, so as to adjust the position of a lens; and the two direction adjusting assemblies are relatively independent, and the whole adjusting device has a simple and compact structure and occupies a small space, thereby reducing the manufacturing cost and facilitating operation.

Description

A lens adjustment device and projection equipment technical field

The present invention relates to the technical field of position adjustment, in particular to a lens adjustment device and projection equipment.

Background technique

At present, in the field of projection equipment, there are mature solutions for adjusting the lens driven by a motor, which can automatically adjust the direction of the lens and make the lens move. However, some projection devices need to manually adjust the lens due to cost requirements and volume constraints, as well as low frequency of use, so that the projection screen can be moved, and at the same time, the volume of the lens adjustment mechanism is minimized to adapt to the limitations of the internal space of the projection device.

SUMMARY OF THE INVENTION

The present invention provides a lens adjustment device and projection equipment, which can manually adjust the position of the lens, has a simple structure and a small volume, and solves the problem that the current electric lens adjustment device is not suitable for some projection equipment.

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a lens adjustment device, the lens adjustment device includes a lens bracket, an adjustment bracket, a first direction adjustment component, a second direction adjustment component, a guide arm, an upper a cover and a casing; the first direction adjustment assembly and the second direction adjustment assembly are arranged on the upper cover, and the lens bracket, the adjustment bracket and the guide arm are accommodated in the upper cover and the in the space formed by the shell;

Wherein, the lens bracket is movably connected with the adjustment bracket; the first end of the guide arm is hinged with the adjustment bracket, and the second end of the guide arm is hinged with the housing;

Driven by the first direction adjustment component, the lens holder can move in the first direction relative to the upper cover, and driven by the second direction adjustment component and the guide arm, the lens holder moves in the second direction Movement, the first direction and the second direction are perpendicular.

Wherein, the adjusting bracket can rotate around the first end, and the guide arm can rotate around the second end;

The adjustment bracket rotates around the second end with the guide arm, thereby driving the lens bracket to have a tendency to rotate; one component of the rotation of the lens bracket is the first direction, and the other component is the first direction. In two directions, the lens holder is limited by the first direction adjusting assembly in the first direction, and the lens holder moves linearly along the second direction.

Wherein, the first direction adjustment component includes a first knob, a first screw rod and a first slider, the first knob is fixed on one end of the first screw rod, the first slider and the lens Bracket snap;

When the first knob rotates, it drives the first screw rod to rotate, the first slider moves along the length direction of the first screw rod when the first screw rod rotates, and the lens bracket follows the rotation of the first screw rod. the first sliding block moves together along the length direction of the first screw rod;

The length direction of the first screw rod is the first direction.

Wherein, the second direction adjustment assembly includes a second knob, a second screw rod and a second slider, the second knob is fixed on one end of the second screw rod, the second slider is connected to the adjustment Bracket snap;

When the second knob rotates, it drives the second screw rod to rotate, the second slider moves along the length direction of the second screw rod when the second screw rod rotates, and the adjusting bracket follows the rotation of the second screw rod. The second sliding block has a tendency to move along the length direction of the second screw rod, the adjusting bracket rotates around the second end under the action of the guide arm, and the side of the adjusting bracket drives the The lens holder has a tendency to rotate;

The rotation component of the lens holder in the first direction is limited by the first slider, and the rotation of the lens holder is converted into a linear motion in the second direction.

Wherein, the side of the first slider facing the lens bracket is provided with a first bayonet, the lens bracket is correspondingly provided with a first protrusion, and the first slider and the lens bracket pass through the a bayonet is clamped with the first protrusion;

The side of the second slider facing the adjustment bracket is provided with a second bayonet, the adjustment bracket is correspondingly provided with a second protrusion, and the second slider and the adjustment bracket pass through the second clip The mouth is clamped with the second protrusion.

Wherein, a side corresponding to the second protrusion of the lens bracket is provided with a notch, so that the second protrusion passes through the notch and is engaged with the second slider.

Wherein, the side of the lens bracket facing the adjustment bracket is provided with a first boss, the side of the adjustment bracket facing the lens bracket is provided with a second boss, the first boss and the first boss are The positions of the two bosses correspond to each other; when the lens support moves in the first direction, the first boss slides on the second boss.

Wherein, the adjusting bracket is provided with a first chute, the lens bracket is sleeved in the first chute, the lens bracket can move in the first chute along the first direction, and Driven by the lens holder, there is a tendency to rotate;

The first chute is formed by the bottom plate of the adjusting bracket and the first and second side walls extending from both sides of the bottom plate.

Wherein, the first side wall located on the same side as the first protrusion is provided with a hollow groove for accommodating the first protrusion;

The avoidance grooves are arranged along the first direction, and the width of the avoidance grooves is larger than the width of the first protrusions in the first direction, so that the first protrusions are located in the first direction. When moving in the direction, it can slide in the hollow slot. Wherein, the casing is provided with a second chute, and the side of the adjusting bracket facing the casing is provided with a third boss;

The third boss extends into the second chute, and when the lens holder rotates around the second end with the guide arm, the third boss slides in the second chute .

Wherein, the lens adjusting device further comprises a sealing pressure plate; the sealing pressure plate is connected with the casing and is covered on the side of the second chute away from the lens bracket;

The lens adjusting device further includes a plurality of screw pressing plates, the screw pressing plates are respectively covered on the side of the first screw rod and the second screw rod away from the lens bracket.

In order to solve the technical problem, the present invention also provides a projection device, the projection device includes a lens and a lens adjustment device, and the lens adjustment device is the above-mentioned lens adjustment device.

Compared with the prior art, the lens adjustment device and the projection device of the present invention have the following beneficial effects: the adjustment component is used to make the lens shift in one direction, the guide arm drives the lens to rotate, and the component moves in the other direction, so that the lens is moved in the other direction. The position adjustment, and the two direction adjustment components are relatively independent, the overall adjustment device has a simple and compact structure, occupies a small space, reduces the manufacturing cost and is easy to operate.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the first disassembled state schematic diagram of the lens adjustment device of the present invention;

Fig. 2 is the second disassembled state schematic diagram of the lens adjustment device of the present invention;

3 is a perspective view of the lens adjustment device of the present invention and the lens assembly;

4 is a schematic view of the front structure after the adjustment bracket and the lens bracket are assembled;

Figure 5 is a rear view of the lens holder;

Figure 6 is a front view of the adjustment bracket;

7 is a schematic structural diagram of a housing;

FIG. 8 is a schematic diagram of the rear structure of the adjusting bracket.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second", etc. in this application are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Please refer to FIGS. 1 and 2. FIG. 1 is a schematic diagram of the first disassembled state of the lens adjustment device of the present invention, and FIG. 2 is a schematic diagram of the second disassembled state of the lens adjustment device of the present invention. The lens adjustment device includes a lens bracket 1 and an adjustment bracket 2. , the first direction adjustment assembly 3, the second direction adjustment assembly 4, the guide arm 5, the upper cover 6 and the housing 7; the first direction adjustment assembly 3 and the second direction adjustment assembly 4 are arranged on the upper cover 6, and the lens holder 1 , The adjusting bracket 2 and the guide arm 5 are accommodated in the space formed by the upper cover 6 and the housing 7; wherein, the lens support 1 is movably connected with the adjusting support 2; the first end of the guide arm 5 is hinged with the adjusting support 2, and the guide arm 5 The second end of the lens is hinged with the housing 7, the adjustment bracket 2 can be rotated around the first end, and the guide arm 5 can be rotated around the second end; driven by the first direction adjustment component 3, the lens bracket 1 can be moved relative to the upper cover 6 at the second end. Moving in one direction and driven by the second direction adjusting component 4 and the guide arm 5, the lens holder 1 moves along the second direction, and the first direction and the second direction are perpendicular. The adjustment bracket 2 rotates around the second end with the guide arm 5, thereby driving the lens bracket 1 to have a tendency to rotate; one component of the rotation of the lens bracket 1 is the first direction, and the other component is the second direction perpendicular to the first direction. The bracket 1 is limited by the first direction adjusting assembly 3 in the first direction, and the lens bracket 1 moves linearly along the second direction.

The lens adjustment device in the present application is used to adjust the lens of the projection equipment. The existing lens adjustment device usually uses a motor to drive the lens to move on the guide rails on both sides, so as to adjust the position of the lens up, down, left, and right. The lens adjustment device in the present application is manually adjusted, and the position adjustment in the up-down direction and the left-right direction is independent of each other, and the structure is relatively simple. The structure of the lens adjustment device will be described in detail below.

The lens holder 1 in this application is provided with an area for installing the lens, which is used to install and carry the lens. The lens is fixed on the lens holder 1 and moves with the movement of the lens holder 1. The movement of the lens holder 1 is through the first direction. The adjustment component 3 is directly driven or indirectly driven by the second direction adjustment component 4 through the adjustment bracket 2 . The movement of the lens holder 1 driven by the first direction adjusting component 3 is linear movement, and the movement direction is the first direction. The adjusting bracket 2 and the lens bracket 1 are movably connected, and the two can move relative to each other. The adjustment bracket 2 is driven by the second direction adjustment component 4 to move linearly. During the movement, the linear motion is converted into a rotary motion by the guide arm 5. The adjustment bracket 2 drives the lens bracket 1 to move together during the above-mentioned movement process. Therefore, the lens bracket 1 also Be driven to form a trend of rotational movement. One component of the rotational movement of the lens holder 1 is the first direction, and the other component is the second direction perpendicular to the first direction, but the lens holder 1 is limited in the first direction by the first direction adjustment component 3, and the lens holder 1 It cannot move in the first direction, so the motion component in the first direction is cancelled, and the lens holder 1 has only the motion component in the second direction, so that the rotational motion of the lens holder 1 is converted into a linear motion in the second direction . Through the functions of the first direction adjustment assembly 3, the second direction adjustment assembly 4 and the guide arm 5, the lens holder 1 drives the lens to move linearly in the first direction and the second direction respectively, so that the positions in different directions can be adjusted independently.

In this embodiment, the upper cover 6 and the casing 7 are the outer protective shells of the lens, and the two are bolted to form an accommodating space. When the lens holder 1 drives the lens to move, the upper cover 6 and the casing 7 are relatively stationary. Both the first direction adjustment assembly 3 and the second direction adjustment assembly 4 are mounted on the upper cover 6 . The guide arm 5 is used to convert the linear motion of the adjustment bracket 2 into a rotational movement. One end of the guide arm 5 is hinged with the adjustment bracket 2 to form the first end, and the other end is hinged with the housing 7 to form the second end. The guide arm 5 can be respectively Rotate around the first or second end. When the second direction adjustment assembly 4 drives the adjustment bracket 2 to move linearly, the first end of the guide arm 5 is forced to rotate with the second end as the fulcrum, and at the same time drives the adjustment bracket 2 to rotate with the second end as the fulcrum, and the lens The bracket 1 is slidably connected with the adjustment bracket 2, so the adjustment bracket 2 drives the lens bracket 1 to form a tendency to rotate. Due to the limitation of the first direction adjusting assembly 3 in the first direction, the lens holder 1 can only move in the second direction, so that the position of the lens in the second direction can be adjusted by the second direction adjusting assembly 4 .

In this embodiment, the first direction and the second direction are perpendicular to each other, and can be the vertical direction of the lens and the horizontal direction of the lens, respectively. The movement of the lens holder 1 in the first direction can be understood as the up and down movement in the vertical direction , the movement of the lens holder 1 in the second direction can be understood as the left-right movement in the horizontal direction. Of course, it is also possible to exchange the first direction and the second direction, or it is also feasible to set the first direction and the second direction to be inclined to the direction of the lens, which are all technical concepts of the present invention. For the convenience of description, in this embodiment, the first direction and the second direction are respectively the vertical direction of the lens and the horizontal direction of the lens as an example.

The first direction adjustment assembly 3 in this embodiment includes a first knob 31 , a first screw rod 32 and a first slider 33 . The first knob 31 is fixed to one end of the first screw rod 32 , and the first slider 33 is connected to the lens. The bracket 1 is clamped; when the first knob 31 rotates, it drives the first screw rod 32 to rotate, the first slider 33 moves along the length direction of the first screw rod 32 when the first screw rod 32 rotates, and the lens bracket 1 follows the first screw rod 32. The sliders 33 move together along the length direction of the first screw rod 32 ; the length direction of the first screw rod 32 is the first direction. The first direction adjustment assembly 3 in this embodiment is a screw-slider structure, which converts the rotational motion of the first knob 31 into a linear motion of the first slider 33 on the first screw rod 32 . The first screw rod 32 is vertically installed on the upper cover 6 , so the length direction of the first screw rod 32 , that is, the movement direction of the first slider 33 is also the vertical direction, because the first slider 33 is clamped with the lens holder 1 Therefore, when the first slider 33 moves in the vertical direction, it also drives the lens holder 1 and the lens to move up and down, thereby adjusting the position of the lens in the up and down direction through the first direction adjustment component 3 .

The second direction adjustment assembly 4 in this embodiment includes a second knob 41 , a second screw rod 42 and a second slider 43 , the second knob 41 is fixed to one end of the second screw rod 42 , and the second slider 43 is connected to the adjustment The bracket 2 is clamped; when the second knob 41 is rotated, the second screw rod 42 is driven to rotate, the second slider 43 moves along the length direction of the second screw rod 42 when the second screw rod 42 is rotated, and the adjusting bracket 2 follows the second screw rod 42. The slider 43 has a tendency to move along the length direction of the second screw rod 42, the adjusting bracket 2 rotates around the second end under the action of the guide arm 5, and the side of the adjusting bracket 2 drives the lens holder 1 to have a tendency to rotate; The rotational component of 1 in the first direction is limited by the first slider 33, and the rotation of the lens holder 1 is converted into a linear motion in the second direction. The second direction adjustment assembly 4 in this embodiment is also a screw-slider structure, which converts the rotational motion of the second knob 41 into a linear motion of the second slider 43 on the second screw rod 42 . The second screw rod 42 is vertically installed on the upper cover 6, so the movement direction of the second sliding block 43 is the vertical direction. Since the second sliding block 43 is engaged with the adjusting bracket 2, the second sliding block 43 is vertically When moving in the upward direction, it also drives the adjusting bracket 2 to move up and down. When the adjustment bracket 2 moves, the guide arm 5 hinged with the adjustment bracket 2 is driven to rotate. During the above movement process, the housing 7 is in a static state, and the movement of the guide arm 5 is that the second end hinged with the housing 7 is the fulcrum to rotate, and the guide arm 5 rotates. The rotation of the arm 5 drives the adjustment bracket 2 to also rotate with the second end as a fulcrum, and the lens bracket 1 movably connected with the adjustment bracket 2 rotates at the same time. The vertical movement of the lens holder 1 is blocked by the first slider 33 through the first protrusion 11 described below, and cannot move in the up and down direction. Therefore, the rotation component of the lens holder 1 in the up and down direction is canceled, and only For the movement component in the left and right directions, the lens holder 1 drives the lens to move in the horizontal direction, thereby adjusting the position of the lens in the left and right directions through the second direction adjustment component 4 .

In this embodiment, the first screw rod 32 and the second screw rod 42 are both penetrated on the upper cover 6 , and the first knob 31 and the second knob 41 are located on the same side, which satisfies the use of adjusting the lens in different directions on one side requirements for user-friendly operation.

In this embodiment, the side of the first slider 33 facing the lens holder 1 is provided with a first bayonet 34 , the lens holder 1 is correspondingly provided with a first protrusion 11 , and the first slider 33 and the lens holder 1 pass through the first latch The port 34 is snapped with the first protrusion 11 . The side of the second slider 43 facing the adjusting bracket 2 is provided with a second bayonet 44 , the adjusting bracket 2 is provided with a second protrusion 21 correspondingly, and the second slide 43 and the adjusting bracket 2 are connected with the second bayonet 44 through the second bayonet 44 The protrusions 21 are snapped together. The first protrusions 11 and the second protrusions 21 are used for engaging with the first sliding block 33 and the second sliding block 43 respectively, so that the first sliding block 33 and the second sliding block 43 are connected between the first screw rod 32 and the second sliding block 43 . When the second screw rod 42 moves up, it drives the lens bracket 1 and the adjustment bracket 2 to move. The clamping connection between the first bayonet 34 and the first protrusion 11 and the second bayonet 44 and the second protrusion 21 is not completely stuck, and there is a certain gap between them, and they can move relatively. When the first sliding block 33 and the second sliding block 43 move in the vertical direction, the abutment with the first protrusion 11 and the second protrusion 21 drives the lens bracket 1 and the adjusting bracket 2 to move in the vertical direction. When the vertical movement of the second slider 43 drives the adjustment bracket 2 and the guide arm 5 to rotate, the adjustment bracket 2 rotates and drives the lens bracket 1 to rotate. Since the first slider 33 is stationary at this time, the lens bracket 1 cannot drive the lens bracket 1 to rotate. When the slider 33 moves, the lens holder 1 is held against the first slider 33 in the vertical direction, so the lens holder 1 cannot move in the vertical direction, and the rotational motion is converted into a linear motion in the horizontal direction, and the lens holder 1 Swipe sideways.

In this embodiment, a gap 12 is formed on the side corresponding to the second protrusion 21 of the lens holder 1 , so that the second protrusion 21 can be engaged with the second slider 43 through the gap 12 . When assembling the projection device, the upper cover 6 , the lens bracket 1 , the adjustment bracket 2 and the housing 7 are arranged in sequence, and the adjustment bracket 2 needs to pass through the lens bracket 1 and be clamped to the second slider 43 installed on the upper cover 6 , Therefore, a notch 12 is provided on one side of the lens holder 1 , so that the second protrusion 21 on the adjusting holder 2 can pass over the lens holder 1 and come into contact with the second sliding block 43 . Of course, the above-mentioned notch 12 can also be set as a through hole, so that the second protrusion 21 can pass through the through hole and contact the second slider 43 .

In one of the embodiments, please refer to FIG. 5 and FIG. 6 , FIG. 5 is a rear view of the lens holder, and FIG. 6 is a front view of the adjustment bracket. The lens bracket 1 is provided with a first boss 13 on the side facing the adjustment bracket 2 , the side of the adjustment bracket 2 facing the lens bracket 1 is provided with a second boss 28, and the positions of the first boss 13 and the second boss 28 correspond; when the lens bracket 1 moves in the first direction, the first boss 13 Sliding on the second boss 28 , the movement between the lens bracket 1 and the adjusting bracket 2 is the sliding of the first boss 13 on the second boss 28 . Please refer to FIG. 4 and FIG. 5. FIG. 4 is a rear view of the lens holder 1, that is, the side facing the adjustment bracket 2, and FIG. 5 is a front view of the adjustment bracket 2. Can be cylindrical bosses. The second boss 28 is arranged on the side of the adjusting bracket 2 and corresponds to the position of the first boss 13 in the vertical direction. A boss 13 can slide along the second boss 28 .

Please refer to FIG. 1 and FIG. 4 , the adjusting bracket 2 in this embodiment is provided with a first sliding slot 22 , the lens bracket 1 is sleeved in the first sliding slot 22 , and the lens bracket 1 can be inserted in the first sliding slot 22 along the first sliding slot 22 . It moves in one direction and is driven by the lens holder 1 to have a tendency to rotate. The first chute 22 is formed by the bottom plate 27 of the adjusting bracket 2 and the first side wall 23 and the second side wall 24 extending from both sides of the bottom plate 27 . The first side wall 23 and the second side wall 24 are disposed on both sides of the bottom plate 27 along the second direction and extend along the first direction. Further, the first side wall 23 located on the same side as the first protrusion 11 is provided with a hollow groove 25 for accommodating the first protrusion 11 . The lens holder 1 is sleeved in the first sliding slot 22 formed by the adjusting bracket 2. The first sliding slot 22 is used to limit the movement direction of the lens holder 1 to be the vertical direction when the lens holder 1 is moved by the first direction adjustment component 3, and is simultaneously moved by the second When the direction adjustment component 4 drives the adjustment bracket 2 to move, the adjustment bracket 2 rotates, thereby driving the lens bracket 1 to form a rotation trend. In order to avoid positional conflict, the first side wall 23 of the first protrusion 11 located on the same side is provided with a hollow groove 25 , so as to prevent the lens holder 1 from being unable to fit into the adjusting holder 2 . Moreover, the avoidance groove 25 is arranged along the first direction, and the width of the avoidance groove 25 in the first direction is greater than the width of the first protrusion 11 in the first direction, so that when the first protrusion 11 moves in the first direction, it can be It slides in the recess 25 without driving the adjusting bracket 2 to move in the first direction. At the same time, make sure that when the adjustment bracket 2 is rotated, the lens bracket 1 does not move with the adjustment bracket 2 in the first direction, and moves together with the adjustment bracket 2 in the second direction.

Referring to FIGS. 7 and 8 , in this embodiment, the housing 7 is provided with a second sliding slot 71 , and the side of the adjusting bracket 2 facing the housing 7 is provided with a third boss 26 . The third boss 26 extends into the second sliding slot 71 , and when the lens holder 1 rotates around the second end with the guide arm 5 , the third boss 26 slides in the second sliding slot 71 . Since the distance between the housing 7 and the lens of the lens is relatively short, it is necessary to compress the distance as much as possible under the premise of ensuring sufficient strength. Therefore, a second sliding groove 71 is provided on the housing 7, and the adjusting bracket 2 is connected to the housing through the third boss 26. The body 7 is slidably connected to reduce the area for finishing during processing, and at the same time, the distance between the housing 7 and the adjusting bracket 2 is reduced, so that the structure of the lens adjusting device is more compact. In this embodiment, the housing 7 is provided with four second sliding grooves 71 , and the side of the adjusting bracket 2 facing the housing 7 is provided with four third bosses 26 . The four second runners 71 are respectively distributed on the four corners of the housing 7, and the four third bosses 26 are also correspondingly arranged on the four corners of the back of the adjusting bracket 2, so that the third bosses 26 can correspond to the second runners 71 one-to-one. .

The lens adjusting device in this embodiment further includes a sealing pressing plate 8 . The sealing pressing plate 8 is connected to the casing 7 and is covered on the side of the second chute 71 away from the lens holder 1 . A sealing pressing plate 8 is provided to seal the housing 7 to prevent dust from entering the optical-mechanical system of the projection device from the lens holder.

The lens adjustment device in this embodiment further includes a plurality of screw press plates 9 , which are respectively covered on the sides of the first screw rod 32 and the second screw rod 42 away from the lens holder 1 . The screw press plate 9 is used to wrap and seal the first screw rod 32 and the second screw rod 42 from the outside, form protection for the first screw rod 32 and the second screw rod 42, and restrict the first slider 33 and the second screw rod. position of block 43 to prevent it from bouncing. In order to solve the technical problem, the present invention also provides a projection device, the projection device includes a lens and a lens adjustment device, and the lens adjustment device is the above-mentioned lens adjustment device. The lens adjustment device has been described in detail above, and will not be repeated here.

Using the lens adjustment device of the present invention, the lens is displaced in one direction by the adjustment component, the lens is driven by the guide arm to have a tendency to rotate, and the component forms a movement in the other direction, so as to adjust the position of the lens, and the two direction adjustment components are relatively independent. , the overall adjustment device has a simple and compact structure, occupies a small space, reduces the manufacturing cost and is easy to operate.

The above are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, All are similarly included in the scope of patent protection of the present invention.

Claims (12)

1. A lens adjustment device, characterized in that the lens adjustment device comprises a lens bracket, an adjustment bracket, a first direction adjustment assembly, a second direction adjustment assembly, a guide arm, an upper cover and a casing; the first direction adjustment assembly and the second direction adjustment assembly is arranged on the upper cover, and the lens bracket, the adjustment bracket and the guide arm are accommodated in the space formed by the upper cover and the housing;

   Wherein, the lens bracket is movably connected with the adjustment bracket; the first end of the guide arm is hinged with the adjustment bracket, and the second end of the guide arm is hinged with the housing;

   Driven by the first direction adjusting component, the lens holder can move in a first direction relative to the upper cover; and

   Driven by the second direction adjustment assembly and the guide arm, the lens holder moves in a second direction, and the first direction and the second direction are perpendicular.
2. The lens adjusting device according to claim 1, wherein the adjusting bracket is rotatable around the first end, and the guide arm is rotatable around the second end;

   The adjustment bracket rotates around the second end with the guide arm, thereby driving the lens bracket to have a tendency to rotate; one component of the rotation of the lens bracket is the first direction, and the other component is the first direction. In two directions, the lens holder is limited by the first direction adjusting assembly in the first direction, and the lens holder moves linearly along the second direction.
3. The lens adjustment device according to claim 2, wherein the first direction adjustment component comprises a first knob, a first screw rod and a first slider, and the first knob is fixed to the first screw rod one end of the first slider is clamped with the lens bracket;

   When the first knob rotates, it drives the first screw rod to rotate, the first slider moves along the length direction of the first screw rod when the first screw rod rotates, and the lens bracket follows the rotation of the first screw rod. the first sliding block moves together along the length direction of the first screw rod;

   The length direction of the first screw rod is the first direction.
4. The lens adjustment device according to claim 3, wherein the second direction adjustment component comprises a second knob, a second screw rod and a second slider, and the second knob is fixed to the second screw rod One end of the second sliding block is clamped with the adjusting bracket;

   When the second knob rotates, it drives the second screw rod to rotate, the second slider moves along the length direction of the second screw rod when the second screw rod rotates, and the adjusting bracket follows the rotation of the second screw rod. The second sliding block has a tendency to move along the length direction of the second screw rod, the adjusting bracket rotates around the second end under the action of the guide arm, and the side of the adjusting bracket drives the The lens holder has a tendency to rotate;

   The rotation component of the lens holder in the first direction is limited by the first slider, and the rotation of the lens holder is converted into a linear motion in the second direction.
5. The lens adjusting device according to claim 4, wherein a side of the first slider facing the lens bracket is provided with a first bayonet, and the lens bracket is correspondingly provided with a first protrusion, the The first slider and the lens bracket are clamped with the first protrusion through the first bayonet;

   The side of the second slider facing the adjustment bracket is provided with a second bayonet, the adjustment bracket is correspondingly provided with a second protrusion, and the second slider and the adjustment bracket pass through the second clip The mouth is clamped with the second protrusion.
6. The lens adjusting device according to claim 5, wherein a side corresponding to the second protrusion of the lens support is provided with a notch, so that the second protrusion can pass through the notch and the second protrusion. The second sliding block is snap-connected.
7. The lens adjusting device according to claim 5, wherein a first boss is provided on the side of the lens bracket facing the adjustment bracket, and a second boss is provided on the side of the adjustment bracket facing the lens bracket A boss, the positions of the first boss and the second boss correspond to each other; when the lens support moves in the first direction, the first boss slides on the second boss.
8. The lens adjusting device according to claim 5, wherein the adjusting bracket is provided with a first sliding slot, the lens bracket is sleeved in the first sliding slot, and the lens bracket can be inserted in the first sliding slot. A chute moves along the first direction, and the lens bracket is driven by the adjusting bracket to have a tendency to rotate;

   The first chute is formed by the bottom plate of the adjusting bracket and the first and second side walls extending from both sides of the bottom plate.
9. The lens adjustment device according to claim 8, characterized in that, a hollow groove is formed on the first side wall on the same side as the first protrusion, for accommodating the first protrusion;

   The avoidance grooves are arranged along the first direction, and the width of the avoidance grooves is larger than the width of the first protrusions in the first direction, so that the first protrusions are located in the first direction. When moving in the direction, it can slide in the hollow slot.
10. The lens adjusting device according to claim 1, wherein a second chute is provided on the housing, and a third boss is provided on a side of the adjusting bracket facing the housing;

    The third boss extends into the second chute, and when the lens holder rotates around the second end with the guide arm, the third boss slides in the second chute .
11. The lens adjusting device according to claim 1, wherein the lens adjusting device further comprises a sealing pressing plate; the sealing pressing plate is connected with the casing and is covered on the second sliding groove away from the lens one side of the bracket;

    The lens adjusting device further includes a plurality of screw pressing plates, the screw pressing plates are respectively covered on the side of the first screw rod and the second screw rod away from the lens bracket.
12. A projection device, the projection device comprising a lens and a lens adjustment device, wherein the lens adjustment device is the lens adjustment device according to any one of claims 1-11.

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