Lens unlocking device and projection device

Abstract

The utility model relates to the technical field of projection, and provides a lens unlocking device which comprises a lock column, an elastic piece and a driving assembly, the lock column has a first state and a second state, the lock column is used for locking a projection lens in the first state, and the lock column is separated from the projection lens and the elastic piece is matched with the lock column in the second state; the driving assembly comprises a driving part and an operating part, the driving part is matched with the elastic piece, and the operating part is used for driving the elastic piece to drive the lock column to selectively switch between the first state and the second state under the driving of external force. The driving assembly is driven by external force, in the driven process, the driving part moves to drive the elastic piece to move and drive the locking column to be switched between the first state and the second state, unlocking or locking of the lens is achieved, the whole lens unlocking device is easy and convenient to operate and simple in structure, a user can conduct unlocking with one hand and rotate the lens with the other hand for replacement during operation, and the user experience is improved. The operation difficulty is reduced, and the purpose of quickly replacing the lens is achieved. In addition, the embodiment of the utility model further provides a projection device.

Description

Technical Field

[0001] This application relates to the field of projection technology, specifically to a lens unlocking device and a projection device. Background Technology

[0002] Engineering projectors and commercial / educational projectors require different lenses to meet the needs of different scenarios. This necessitates quick and easy lens replacement on-site to avoid the additional costs associated with disassembling / installing the projector.

[0003] Current projection devices typically use complex unlocking mechanisms to lock the lens in order to ensure its stability during use. This results in complicated unlocking operations and a long lens replacement time, which cannot meet the need for quick lens replacement. Utility Model Content

[0004] This application provides a lens unlocking device and a projection device to at least partially improve the above-mentioned technical problems.

[0005] The embodiments of this application are implemented through the following technical solutions.

[0006] This application provides a lens unlocking device, including a locking pin, a spring, and a driving assembly. The locking pin has a first state and a second state. In the first state, the locking pin is used to lock the projection lens. In the second state, the locking pin is separated from the projection lens, and the spring engages with the locking pin. The driving assembly includes a driving part and an operating part. The driving part engages with the spring, and the operating part is used to drive the spring to selectively switch the locking pin between the first state and the second state under external force.

[0007] In some embodiments, the drive assembly includes a support column and a push rod. The push rod has a drive part and an operating part. The push rod is rotatably mounted on the support column. When the operating part is driven by an external force, the push rod rotates around the support column. During the rotation, the drive part drives a spring plate to selectively switch the locking column between a first state and a second state.

[0008] In some implementations, the drive assembly also includes a reset assembly for resetting the push rod after the external force disappears.

[0009] In some embodiments, the reset assembly includes a torsion spring and a mounting post. The torsion spring is sleeved on the mounting post, and the torsion arm of the torsion spring is connected to a push rod. When the operating part is subjected to an external force, the push rod is driven to rotate and the torsion arm is torsionally deformed.

[0010] In some implementations, the push rod has a track groove, and the mounting post is slidably embedded in the track groove.

[0011] In some embodiments, the operating part includes a button, an elastic element, and a guide post. The button has a guide hole, the guide post is connected to the push rod and slidably embedded in the guide hole, the elastic element is sleeved on the guide post, and the two ends of the elastic element abut against the button and the push rod, respectively.

[0012] In some embodiments, the drive assembly includes a baffle, which is provided with a drive part and an operating part. When the operating part is driven by an external force, the drive baffle moves in the direction of the external force so that the drive part drives the spring to selectively switch the locking pin between a first state and a second state.

[0013] In some embodiments, the operating unit includes a mounting base, an unlocking lever, and an elastic element. The unlocking lever is slidably disposed on the mounting base and is driven to move along the sliding direction during the sliding process. The elastic element is used to reset the unlocking lever.

[0014] In some embodiments, the unlocking rod is provided with a boss, the mounting base is provided with a boss, the boss has a through hole, the unlocking rod slides through the through hole, and the elastic element abuts between the boss and the boss.

[0015] Secondly, this application also provides a projection device, including the above-mentioned lens unlocking device and a projection lens. The projection lens is provided with a lock hole. When the lock pin is in the first state, the lock pin is inserted into the lock hole to limit the rotational freedom of the projection lens.

[0016] The lens unlocking device and projection device provided in this application embodiment receive external force through the driving component. During the driving process, the driving part moves and drives the spring to move, thereby driving the locking pin to switch between the first state and the second state, thereby unlocking or locking the lens. The entire lens unlocking device is easy to operate and has a relatively simple structure. When operating, the user can operate the unlocking with one hand and rotate the lens with the other hand to replace it, which greatly reduces the difficulty of operation and achieves the purpose of quickly changing the lens. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a partial disassembled structural diagram of a projection device provided in an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the structure of a lens unlocking device in a projection device provided in an embodiment of this application.

[0020] Figure 3This is a schematic diagram of another lens unlocking device in a projection device provided in an embodiment of this application. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Engineering projectors and commercial / educational projectors require different lenses to meet the needs of different scenarios. This necessitates quick and easy lens replacement on-site to avoid the additional costs associated with disassembling / installing the projector.

[0023] Current projection devices typically use complex unlocking mechanisms to lock the lens in order to ensure its stability during use. This results in complicated unlocking operations and a long lens replacement time, which cannot meet the need for quick lens replacement.

[0024] Example 1

[0025] See Figure 1 This embodiment provides a projection device 1, including a projection lens 10 and a lens unlocking device 20, wherein the lens unlocking device 20 is used to unlock or lock the projection lens 10.

[0026] Specifically, the projection lens 10 can be a lens of various specifications and performance parameters, and the number of projection lenses 10 can be one or more, which is not limited in this embodiment. The projection lens 10 has a generally cylindrical structure, and a locking hole 11 is provided on the housing of the projection lens 10. In one embodiment, the locking hole 11 is opened generally along the direction of the incident light optical axis of the projection lens 10. The number of locking holes 11 can be one or more, which is not limited in this embodiment.

[0027] Please refer to the following: Figure 1 and Figure 2 The lens unlocking device 20 includes a locking pin 40, a spring 30, and a driving component 50. The locking pin 40 is used to cooperate with the locking hole 11 of the projection lens 10 to unlock or lock the projection lens 10. The spring 30 is driven to cooperate with the locking pin 40. The driving component 50 is used to drive the spring 30 to move under external force, thereby driving the locking pin 40 to switch states to unlock or lock the projection lens 10.

[0028] The locking pin 40 has a first state and a second state. In the first state, the locking pin 40 locks the projection lens 10, preventing it from rotating and thus restricting its rotational freedom to prevent it from falling off. In the second state, the locking pin 40 is separated from the projection lens 10, and it no longer restricts the lens, allowing it to be rotated and removed for replacement. The locking pin 40 can switch between the first and second states.

[0029] Specifically, in this embodiment, the locking pin 40 includes a base plate 41, a connecting pin, and a locking pin 42. The connecting pin and the locking pin 42 are disposed on the same side surface of the base plate 41. The connecting pin is used to cooperate with the spring piece 30. The shape and structure of the locking pin 42 are compatible with the lock hole 11. The locking pin 42 can be embedded in the lock hole 11. When the locking pin 42 is embedded in the lock hole 11, the locking pin 40 is in a first state. When the locking pin 42 is completely withdrawn from the lock hole 11, the locking pin 40 is in a second state.

[0030] The spring 30 is made of a material with elastic deformation capability, such as metal. The spring 30 can form a transmission between the drive assembly 50 and the locking pin 40, thereby driving the locking pin 40 to move under the drive of the drive assembly 50, allowing the locking pin 40 to switch between a first state and a second state. In this embodiment, the spring 30 is configured with a roughly "Z"-shaped structure. This structure allows the locking pin 40 and the drive assembly 50 to be misaligned, which is more conducive to the layout of the entire lens unlocking device 20 within the projection device 1. One end of the spring 30 forms a transmission with the connecting pin. Specifically, in this embodiment, one end of the spring 30 is provided with a collar 31, which is sleeved on and fixedly connected to the connecting pin. The other end of the spring 30 cooperates with the drive assembly 50 for transmission.

[0031] The drive assembly 50 includes a drive unit 51 and an operating unit 52. The drive unit 51 cooperates with the spring 30. When the drive assembly 50 is subjected to force, the drive unit 51 can drive the spring 30 to move. The operating unit 52 can receive external force and is used to drive the spring 30 to selectively switch between a first state and a second state under the drive of external force.

[0032] Specifically, in this embodiment, the drive assembly 50 includes a support column 60 and a push rod 53. The support column 60 can be a columnar structure, and the push rod 53 is rotatably mounted on the support column 60. The support column 60 can serve as the axis of rotation for the push rod 53, that is, when the push rod 53 is subjected to force, it rotates around the support column 60. The push rod 53 has a drive part 51 and an operating part 52. When the operating part 52 is driven by an external force, the push rod 53 rotates around the support column 60. During the rotation, the drive part 51 drives the end of the spring piece 30 away from the locking pin 40 to move the locking pin 40, thereby allowing the locking pin 40 to selectively switch between a first state and a second state.

[0033] In this embodiment, the operating part 52 can be located between the driving part 51 and the support column 60. This arrangement allows the user to drive the push rod 53 to rotate with less effort, reducing the difficulty of operation. In this embodiment, when the user applies pressure to the operating part 52, the push rod 53 rotates, the driving part 51 drives the spring 30 to move, and then drives the locking column 40 to move, which can switch the locking column 40 from the first state to the second state. At this time, the locking pin 42 of the locking column 40 disengages from the lock hole 11, and the projection lens 10 is unlocked. In some embodiments, after unlocking, the user can remove the current projection lens 10 and replace it with a new one as needed. Then, the push rod 53 can be reset manually. After the push rod 53 is reset, the spring 30 can also drive the locking column 40 to reset due to its own deformation characteristics.

[0034] In this embodiment, the drive assembly 50 further includes a reset assembly, which is used to reset the push rod 53 after the external force disappears. This configuration can automatically reset the position of the push rod 53, so that after the locking pin 40 switches from the first state to the second state, it can automatically switch back to the first state after the external force disappears. The reset assembly can be of various structures; this is just one example. In this embodiment, the reset assembly includes a torsion spring 62 and a mounting post 61. The torsion spring 62 is sleeved on the mounting post 61, and the torsion arm of the torsion spring 62 is connected to the push rod 53. When the operating part 52 is subjected to an external force, it drives the push rod 53 to rotate and causes the torsion arm to torsionally deform. When the external force disappears, the torsionally deformed torsion arm provides a reset force for the push rod 53, driving the push rod 53 to reset to the initial state. At this time, the force of the push rod 53 on the spring 30 disappears, the push rod 53 drives the spring 30 to reset, and the spring 30 drives the locking pin 40 to reset.

[0035] It is understood that in other implementations, the reset component may be other structures, such as a spring.

[0036] To facilitate the installation of the mounting post 61 and limit the reset stroke of the push rod 53, the push rod 53 is provided with a track groove 55. The track groove 55 can be adapted to the trajectory of the push rod 53 when it rotates around the support post 60. The mounting post 61 is slidably embedded in the track groove 55. When the reset component drives the push rod 53 to reset, the push rod 53 can slide relative to the mounting post 61 along the extension direction of the track groove 55. This can guide the reset process and also facilitate the layout of the entire lens unlocking device 20, reducing space occupation.

[0037] The operating unit 52 can be configured to be suitable for user hand operation, such as being suitable for user finger operation. As an example only, in this embodiment, the operating unit 52 includes a button 521, an elastic member 523, and a guide post 522. The button 521 is provided with a guide hole (not shown in the figure). The guide post 522 is connected to the push rod 53 and is slidably embedded in the guide hole. The elastic member 523 is sleeved on the guide post 522, and both ends of the elastic member 523 abut against the button 521 and the push rod 53, respectively. The elastic member 523 can reset the button 521.

[0038] The working principle of the lens unlocking device 20 in this embodiment is as follows:

[0039] When the projection lens 10 is in the installed state, the locking pin 42 of the locking pin 40 is embedded in the locking hole 11 of the projection lens 10, and the locking pin 40 is in the first state. When the projection lens 10 needs to be replaced, the user can press the button 521 of the operating unit 52 to push the push rod 53 to rotate around the support column 60. At this time, the drive unit 51 of the push rod 53 drives the spring 30, and the spring 30 drives the locking pin 40 to move. The locking pin 42 of the locking pin 40 disengages from the locking hole 11, and the locking pin 40 switches from the first state to the second state. The projection lens 10 is no longer restricted and can be rotated and unscrewed. After the new lens is installed, the force applied by the user to the button 521 is removed, the reset assembly resets the push rod 53, and drives the spring 30 and the locking pin 40 to reset. The locking pin 40 switches from the second state to the first state, and the locking pin 42 of the locking pin 40 is re-embedded in the locking hole 11 of the new projection lens 10, thereby restricting the rotational freedom of the projection lens 10.

[0040] The lens unlocking device 20 and projection device 1 provided in this application embodiment receive external force through the drive component 50. During the driving process, the drive part 51 moves to drive the spring 30 to move, thereby driving the locking pin 40 to switch between the first state and the second state, realizing the unlocking or locking of the lens. The entire lens unlocking device 20 is easy to operate and has a relatively simple structure. When operating, the user can operate the unlocking with one hand and rotate the lens with the other hand to replace it, greatly reducing the difficulty of operation and achieving the purpose of quickly changing the lens.

[0041] Example 2

[0042] See Figure 3 This embodiment provides another lens unlocking device 20, which can be used to replace the lens unlocking device 20 in Embodiment 1. The following only describes in detail the differences from the lens unlocking device 20 in the embodiment. For the similarities, please refer to the relevant content in Embodiment 1, which will not be repeated here.

[0043] In this embodiment, the lens unlocking device 20 includes a spring 30, a locking pin 40, and a driving assembly 50. The structures of the spring 30 and the locking pin 40 are the same as those in Embodiment 1, and will not be described again here.

[0044] In this embodiment, the drive assembly 50 includes a baffle 54, which can be a straight plate or an arc-shaped plate, etc., and this embodiment is not limited in this respect. The baffle 54 is provided with a drive part 51 and an operation part 52. When the operation part 52 is driven by an external force, the drive baffle 54 moves in the direction of the external force, that is, the drive baffle 54 moves linearly in the direction of the external force, and the direction of movement is the same as the direction of the external force. During the movement of the baffle 54, the drive part 51 drives the spring 30 to selectively switch the locking pin 40 between the first state and the second state.

[0045] Specifically, as an example only, in this embodiment, the operating unit 52 includes a mounting base 524, an unlocking lever 526, and an elastic element 527. The unlocking lever 526 is slidably disposed on the mounting base 524, and during the sliding process, the unlocking lever 526 is driven to move along the sliding direction. When the unlocking lever 526 is driven by an external force, the unlocking lever 526 slides, pushing the baffle 54 during the sliding process, causing the baffle 54 to move, thereby causing the driving part 51 of the baffle 54 to drive the spring 30, and the spring 30 drives the locking pin 40 to switch between the first state and the second state. The mounting base 524 is provided with a protrusion 525, and the protrusion 525 has a through hole. The axis of the through hole is in the same direction as the sliding direction of the unlocking lever 526, and the unlocking lever 526 slides through the through hole. The end of the unlocking lever 526 away from the baffle 54 can be configured to be suitable for user pressing, for example, a button 521 can also be provided on the end of the unlocking lever 526 away from the baffle 54. The end of the unlocking lever 526 near the baffle 54 can be fixedly connected to the baffle 54, or it can be not fixedly connected to the baffle 54, but instead abut against the baffle 54. By operating the unlocking lever 526, the user can drive the baffle 54 to move, thereby achieving the purpose of switching the locking pin 40 between the first state and the second state.

[0046] The elastic element 527 is used to reset the unlocking lever 526 so that the unlocking lever 526 is reset after the external force disappears. The elastic element 527 can be a spring, an elastic pad made of elastic rubber, silicone, etc. In this embodiment, the unlocking lever 526 is provided with a boss 528, which is located approximately in the middle of the unlocking lever 526. The elastic element 527 abuts between the boss 528 and the boss 525. When the external force drives the unlocking lever 526 to move toward the baffle 54, the boss 528 squeezes the elastic element 527, causing the elastic element 527 to deform. When the external force disappears, the elastic element 527 restores its deformation, causing the unlocking lever 526 to reset. At the same time, the baffle 54, the spring 30, and the locking pin 40 are also reset.

[0047] The working principle of the lens unlocking device 20 in this embodiment is as follows:

[0048] When the projection lens 10 is in the installed state, the locking pin 42 of the locking pin 40 is embedded in the locking hole 11 of the projection lens 10, and the locking pin 40 is in the first state. When the projection lens 10 needs to be replaced, the user can press the unlocking lever 526 of the operating part 52 to push the unlocking lever 526 to move. At this time, the unlocking lever 526 pushes the baffle 54 to move. The driving part 51 of the baffle 54 drives the spring 30, and the spring 30 drives the locking pin 40 to move. The locking pin 42 of the locking pin 40 disengages from the locking hole 11, and the locking pin 40 switches from the first state to the second state. The projection lens 10 is no longer restricted and can be rotated and unscrewed. After the new lens is installed, the force applied by the user to the button 521 is removed, the reset part resets the unlocking lever 526, and drives the spring 30 and the locking pin 40 to reset. The locking pin 40 switches from the second state to the first state, and the locking pin 42 of the locking pin 40 is re-embedded in the locking hole 11 of the new projection lens 10, thereby restricting the rotational freedom of the projection lens 10.

[0049] The lens unlocking device 20 and projection device 1 provided in this application embodiment receive external force through the drive component 50. During the driving process, the drive part 51 moves to drive the spring 30 to move, thereby driving the locking pin 40 to switch between the first state and the second state, realizing the unlocking or locking of the lens. The entire lens unlocking device 20 is easy to operate and has a relatively simple structure. When operating, the user can operate the unlocking with one hand and rotate the lens with the other hand to replace it, greatly reducing the difficulty of operation and achieving the purpose of quickly changing the lens.

[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A lens unlocking device, characterized in that, include: The locking pin has a first state and a second state. In the first state, the locking pin is used to lock the projection lens. In the second state, the locking pin is separated from the projection lens. A spring clip that engages with the locking pin; as well as A driving assembly, comprising a driving part and an operating part, wherein the driving part cooperates with the spring piece, and the operating part is used to drive the spring piece to selectively switch the locking pin between the first state and the second state under external force.

2. The lens unlocking device according to claim 1, characterized in that, The driving component includes: Support column; A push rod has a driving part and an operating part. The push rod is rotatably mounted on a support column. When the operating part is driven by an external force, the push rod rotates around the support column. During the rotation, the driving part drives the spring plate to selectively switch the locking column between the first state and the second state.

3. The lens unlocking device according to claim 2, characterized in that, The drive assembly also includes a reset assembly, which is used to reset the push rod after the external force disappears.

4. The lens unlocking device according to claim 3, characterized in that, The reset assembly includes a torsion spring and a mounting post. The torsion spring is sleeved on the mounting post, and the torsion arm of the torsion spring is connected to the push rod. When the operating part is subjected to external force, it drives the push rod to rotate and causes the torsion arm to torsion deform.

5. The lens unlocking device according to claim 4, characterized in that, The push rod has a track groove, and the mounting post is slidably embedded in the track groove.

6. The lens unlocking device according to any one of claims 2-5, characterized in that, The operating part includes a button, an elastic element, and a guide post. The button has a guide hole, the guide post is connected to the push rod and is slidably embedded in the guide hole, the elastic element is sleeved on the guide post, and the two ends of the elastic element abut against the button and the push rod respectively.

7. The lens unlocking device according to claim 1, characterized in that, The drive assembly includes a baffle, which is provided with the drive part and the operation part. When the operation part is driven by an external force, it drives the baffle to move along the direction of the external force, so that the drive part drives the spring to selectively switch the locking pin between the first state and the second state.

8. The lens unlocking device according to claim 7, characterized in that, The operating unit includes a mounting base, an unlocking lever, and an elastic element. The unlocking lever is slidably disposed on the mounting base and is driven to move along the sliding direction during the sliding process. The elastic element is used to reset the unlocking lever.

9. The lens unlocking device according to claim 8, characterized in that, The unlocking rod is provided with a boss, the mounting base is provided with a boss, the boss has a through hole, the unlocking rod slides through the through hole, and the elastic element abuts between the boss and the boss.

10. A projection device, characterized in that, The device includes a lens unlocking device as described in any one of claims 1-9 and a projection lens, wherein the projection lens is provided with a locking hole, and when the locking pin is in a first state, the locking pin is inserted into the locking hole to limit the rotational freedom of the projection lens.

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