Horizontal moving device

Abstract

The utility model belongs to optical image equipment technical field, concretely relates to a horizontal moving device, include: base, the piece that moves, the piece that moves sets up in the base, piezoelectric mechanism, piezoelectric mechanism includes deformation block, and the first direction one end of deformation block is connected with the base bottom end, and the first direction other end of deformation block is butt -joint with the piece that moves bottom end, and deformation block is the deformation block that will produce the bending deformation along the second direction perpendicular to the first direction when the current change of being admitted, to drive the piece that moves along the second direction and moves the action of motion through deformation block. The utility model drives the piece that moves and moves the action of motion in the second direction through the deformation block that can realize the bending deformation in the second direction when the current change of being admitted, can realize the piece that moves and moves steadily to one side in the limited space.

Description

Technical Field

[0001] This utility model belongs to the field of optical imaging equipment technology, and specifically relates to a horizontal movement device. Background Technology

[0002] With the development of technology, many electronic devices today (such as smartphones or digital cameras) have the function of taking pictures or recording videos. The use of these electronic devices is becoming more and more common, and they are developing towards convenient and thinner designs to provide users with more choices.

[0003] Some electronic devices with photographic or video recording capabilities are equipped with a lens drive mechanism to move optical components such as a lens, thereby achieving autofocus. Light can pass through the optical components to form an image on the photosensitive element.

[0004] Most existing technologies achieve optical zoom and / or optical image stabilization through the movement of a movable component (such as a carrier). Therefore, a moving mechanism capable of achieving stable and reliable movement of the movable component is something that those skilled in the art need to actively consider. Utility Model Content

[0005] The present invention addresses the aforementioned technical problems by providing a horizontal movement device.

[0006] A horizontal moving device, comprising:

[0007] Base;

[0008] The movable component is disposed within the base;

[0009] A piezoelectric mechanism includes a deformable block. One end of the deformable block in a first direction is connected to the bottom end of the base, and the other end of the deformable block in the first direction abuts against the bottom end of the movable part. The deformable block is designed to bend and deform in a second direction perpendicular to the first direction when the applied current changes, so as to drive the movable part to move along the second direction.

[0010] Optionally, the piezoelectric mechanism further includes an abutment block, with one end of the deformable block in a first direction connected to one end of the abutment block, and the other end of the abutment block abutting against the bottom end of the movable part, so that the deformable block abuts against the bottom end of the movable part through the abutment block.

[0011] Optionally, the base has a base abutment protrusion at its bottom end, the movable part has a movable part abutment protrusion at its bottom end, one end of the deformable block in the first direction is connected to the base abutment protrusion, and the other end of the deformable block in the first direction directly or through an abutment block abuts against the movable part abutment protrusion.

[0012] Optionally, a power-conducting point is provided on the end face of the base that abuts against the protrusion and connects with the deformable block. The deformable block contacts the power-conducting point, and the power-conducting point is connected to the base's built-in circuitry. The base's built-in circuitry supplies power to the deformable block through the power-conducting point.

[0013] Optionally, the movable component is a carrier or a substrate.

[0014] Optionally, the horizontal moving device further includes:

[0015] A clamping mechanism is provided, which is connected to the movable part and the base respectively. The clamping mechanism presses the movable part against the piezoelectric mechanism and resets it after it moves in the second direction.

[0016] Optionally, the clamping mechanism may employ one or more of the following combinations: a spring, a pre-embedded elastic element, and a rubber elastic element.

[0017] Optionally, the base has one or more top protrusions at its top, and the clamping mechanism uses springs. The number of springs is the same as the number of top protrusions. One end of a single spring is connected to a corresponding top protrusion, and the other end of a single spring is connected to the top of the movable part.

[0018] Optionally, there are two top bosses, which are arranged on one side of the top of the base in a second direction near the deformable block.

[0019] Optionally, the horizontal moving device further includes:

[0020] A friction reduction mechanism is provided, which is respectively disposed between the outer side wall of the movable part and the inner side wall of the base. The friction reduction mechanism is used to reduce the frictional force between the movable part and the base during relative movement.

[0021] Optionally, the friction reduction mechanism may employ a combination of one or more of balls, rollers, and guide shafts.

[0022] Optionally, the horizontal moving device further includes:

[0023] A position sensor, which is mounted on the base;

[0024] A sensing magnet is disposed at the bottom end of the component to be moved. The sensing magnet is positioned opposite to the position sensor. The position of the component to be moved is monitored through the cooperation of the sensing magnet and the position sensor.

[0025] Optionally, the position sensor is powered by built-in wiring within the base.

[0026] Beneficial effects: This utility model has at least one or more of the following advantages:

[0027] 1. This utility model uses a deformable block that can bend and deform in a second direction when the current changes to drive the movable part to move in a second direction, so as to achieve the purpose of stable movement of the movable part to one side within a limited space.

[0028] 2. This utility model can provide elastic tension between the movable part and the base through the clamping mechanism, so that the contact between the deformable block / abutment block and the movable part is tighter; at the same time, when the movable part moves in the second direction, such as performing AF zoom operation, the clamping mechanism can also assist the movable part in the reset operation, which plays a technical role in assisting reset and preventing the movable part from twisting.

[0029] 3. This utility model guides the object by reducing friction and reduces the friction between the object to be moved and the base during relative movement.

[0030] 4. This utility model uses the combination of a position sensor and a sensing magnet to monitor the position of the moving part, which assists in automatic focusing or automatic image stabilization and achieves a closed-loop control purpose. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of a structure according to Embodiment 1 of the present utility model;

[0032] Figure 2 for Figure 1 Exploded view;

[0033] Figure 3 This is a diagram showing the positional relationship between the base and the piezoelectric mechanism in Embodiment 1 of this utility model;

[0034] Figure 4 This is a diagram showing the positional relationship between the movable part and the piezoelectric mechanism in Embodiment 1 of this utility model;

[0035] Figure 5 for Figure 4 Exploded view;

[0036] Figure 6 This is a schematic diagram illustrating the working principle of the piezoelectric mechanism of this utility model;

[0037] Figure 7 This is a schematic diagram of the structure of the piezoelectric mechanism of this utility model when it drives the movable part to move.

[0038] Figure 8 This is a diagram showing the positional relationship between the base, the movable part, and the spring in Example 1;

[0039] Figure 9 This is a diagram showing the positional relationship between the base, the movable part, and the ball bearing in Example 1;

[0040] Figure 10 This is a positional relationship diagram of the base, the movable part, and the guide shaft in Embodiment 1;

[0041] Figure 11 This is a schematic diagram of a structure according to Embodiment 2 of the present invention;

[0042] Figure 12 for Figure 11 Exploded view;

[0043] Figure 13 for Figure 12 Exploded view of part of the structure;

[0044] Figure 14 This is a schematic diagram of the power supply line in Embodiment 2 of this utility model;

[0045] Figure 15 This is a diagram showing the positional relationship between the movable component, the piezoelectric mechanism, and the inductive magnet in Example 2.

[0046] Figure 16 This is a diagram showing the positional relationship between the movable component and the sensing magnet in Example 2. Detailed Implementation

[0047] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0048] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0049] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0050] In the following description, in order to clearly demonstrate the structure and working method of this utility model, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0051] Example 1:

[0052] Reference Figures 1 to 5 This embodiment provides a horizontal moving device that enables the movable part to move along a second direction. When this horizontal moving device is used in a lens driving device, the movable part is a carrier, and the horizontal moving device, as a carrier moving mechanism, enables the AF zoom operation of a lens mounted on the carrier.

[0053] Of course, this horizontal movement device can also be used in other scenarios where movement is required. When applied to other scenarios, the component to be moved can be a substrate or other components that need to be moved.

[0054] The horizontal moving device in this embodiment includes a base 10, a carrier 20, and a piezoelectric mechanism 30. The piezoelectric mechanism 30 includes a deformable block 31.

[0055] The carrier 20 is set inside the base 10, such as Figure 1 As shown, if the first direction is the X-axis direction and the second direction is the Y-axis direction, and both the X-axis and Y-axis directions are horizontal directions parallel to the inner bottom surface of the base 10, then the carrier 20 can move along the Y-axis direction within the base 10.

[0056] Reference Figure 3 and Figure 4 The base 10 has a base abutment protrusion 11 at its bottom end, and the carrier 20 has a moving part abutment protrusion 21 at its bottom end. The piezoelectric mechanism 30 also includes an abutment block 32. One end of the deformable block 31 in the X-axis direction is connected to the base abutment protrusion 11, and the other end of the deformable block 31 in the X-axis direction is connected to one end of the abutment block 32. The other end of the abutment block 32 abuts against the moving part abutment protrusion 21. The deformable block 31 is designed to bend and deform along the Y-axis direction when the applied current changes. The deformable block 31 drives the carrier 20 to move along the Y-axis direction, thereby realizing the AF zoom operation of the lens on the carrier.

[0057] The deformable block 31 used in this embodiment is as follows: Figure 6 and Figure 7As shown, its length direction is the X-axis direction. When the applied current changes, it will bend and deform along the Y-axis direction, forming an S-shaped undulation. This S-shaped undulation allows the contact block 32 and the carrier 20 to move in the Y-axis direction, thereby realizing the movement of the carrier. Of course, during the design, the direction of the deformable block 31 can be changed to make the piezoelectric mechanism move in the X-axis or Z-axis direction. The Z-axis direction is perpendicular to the X-axis and Y-axis directions, respectively.

[0058] In this embodiment, the shape and material of the deformable block 31 and the abutment block 32 are not limited. Any shape and material that can achieve bending deformation along the Y-axis when the current supplied to the deformable block 31 changes, thereby driving the abutment block 32 and the carrier 20 to move in the Y-axis direction, is acceptable.

[0059] For example, the deformable block 31 uses a piezoelectric material, which typically consists of two piezoelectric ceramic (PZT) sheets with opposite polarization directions sandwiching a metal or carbon fiber sheet. The principle is to apply a voltage to the deformable block, causing one piezoelectric ceramic sheet to elongate and the other to shorten, resulting in the deformable block bending like a "metal-ceramic sandwich." It has advantages such as fast response, high force, and high-frequency capability.

[0060] In this embodiment, one end of the deformable block 31 in the X-axis direction may not be connected to the base abutment protrusion 11, but directly connected to the bottom end of the base 10. In this case, the base 10 does not have a base abutment protrusion 11, or the base abutment protrusion 11 can be considered as part of the base 10. The other end of the deformable block 31 in the X-axis direction may not be connected to the abutment block 32, but directly abut to the moving member abutment protrusion 21, or directly abut to the bottom end of the carrier 20. In this case, the piezoelectric mechanism does not contain the deformable block 31, or the bottom end of the carrier 20 does not have a moving member abutment protrusion 21, or the moving member abutment protrusion 21 can be considered as part of the bottom end of the carrier 20.

[0061] In one embodiment, the horizontal moving device further includes a pressing mechanism, which is connected to the carrier 20 and the base 10 respectively. The pressing mechanism presses the carrier 20 against the piezoelectric mechanism 30 and resets it after moving in the second direction.

[0062] This utility model can provide elastic tension between the carrier 20 and the base 10 through the clamping mechanism, so that the contact tightness between the deformable block 31 / abutment block 32 and the carrier 20 is higher; at the same time, when the carrier 20 moves in the second direction, such as when performing AF zoom operation, the clamping mechanism can also assist the carrier 20 in the reset operation, which plays a technical role in assisting reset and preventing the carrier 20 from twisting.

[0063] In one embodiment, the clamping mechanism includes, but is not limited to, one or more combinations of springs, embedded elastic elements, and rubber elastic elements.

[0064] In one embodiment, reference is made to Figure 1 and Figure 2 , Figure 8 The base 10 has one or more top protrusions 12 at its top. The clamping mechanism uses springs 40. The number of springs 40 is the same as the number of top protrusions 12. One end of a single spring 40 is connected to a corresponding top protrusion 12, and the other end of a single spring 40 is connected to the top of the carrier 20.

[0065] like Figure 8 The arrow indicates that the spring 40 generates a pulling force to the right, which allows the carrier 20 to be firmly abutted against the abutment block 32.

[0066] The number of springs 40 and top protrusions 12 can be determined according to the dimensions of the base 10 and the carrier 20 to ensure that the carrier 20 can be tightly abutted against the base 10 by the springs 40.

[0067] In one embodiment, reference is made to Figure 1 and Figure 2 There are two top protrusions 12, which are arranged side by side on one side of the top of the base 10 near the deformable block 31 in the Y-axis direction.

[0068] The carrier 20 preferably has a protrusion on one side, which is located between two top protrusions 12 so that the two top protrusions 12 can limit the carrier 20.

[0069] In one embodiment, the horizontal moving device further includes a friction reduction mechanism, which is respectively disposed between the outer side wall of the carrier 20 and the inner side wall of the base 10. The friction reduction mechanism is used to reduce the frictional force between the carrier 20 and the base 10 during relative movement.

[0070] In one embodiment, the friction reduction mechanism includes, but is not limited to, one or more combinations of balls, rollers, and guide shafts.

[0071] Reference Figure 9 The friction-reducing mechanism uses ball bearings 61. In specific implementations, one or more ball bearing grooves can be provided on the outer wall of the carrier 20 and the inner wall of the base 10. When multiple ball bearing grooves are provided, they are preferably arranged side by side along the Z-axis. The ball bearing grooves between the outer wall of the carrier 20 and the inner wall of the base 10 are arranged opposite each other and one or more ball bearings 61 are installed thereon. The friction is reduced by the rolling engagement of the ball bearings 61 in the ball bearing grooves. The number of ball bearing grooves and ball bearings 61 is not limited and can be set according to the actual situation.

[0072] Reference Figure 10The friction reduction mechanism uses a guide shaft 62. A guide groove can be provided on the outer wall of the carrier 20 and the inner wall of the base 10. The guide groove between the outer wall of the carrier 20 and the inner wall of the base 10 is arranged opposite to each other and the guide shaft 62 is installed. The friction is reduced by the rolling engagement of the guide shaft 62 in the guide groove.

[0073] In one embodiment, the horizontal moving device further includes a housing, which is detachably connected to the base to form a hollow cavity. The movable component, piezoelectric mechanism, clamping mechanism, and friction reduction mechanism are all disposed within the hollow cavity. Preferably, the housing and base 10 are detachably connected by a snap-fit ​​connection.

[0074] Example 2:

[0075] Reference Figures 11 to 16 This embodiment provides a horizontal moving device that enables the movable part to move along a second direction. Except for the following structural differences from Embodiment 1, this embodiment is identical to Embodiment 1 and will not be described again here.

[0076] In this embodiment, the horizontal movement device further includes a position monitoring mechanism, which includes a position sensor 51 and a sensing magnet 52.

[0077] The position sensor 51 is mounted on the base 10. Specifically, a sensor mounting slot 13 can be provided at the bottom of the base 10, and the position sensor 51 is mounted in the sensor mounting slot 13.

[0078] A sensing magnet 52 is disposed at the bottom of the carrier 20, and is positioned opposite to the position sensor 51. The cooperation between the sensing magnet 52 and the position sensor 51 enables the monitoring of the position of the carrier 20, providing an auxiliary effect for automatic focusing or automatic image stabilization, thus achieving a closed-loop control. Specifically, a magnet mounting groove can be provided at the bottom of the carrier 20, and the sensing magnet 52 can be installed within the magnet mounting groove.

[0079] In one embodiment, reference is made to Figure 14 The position sensor 51 is powered by the base-integrated circuit 14 within the base 10.

[0080] In one embodiment, reference is made to Figure 13 and Figure 14 A power-conducting point 15 is provided on one side of the base abutting the protrusion 11. The side of the base abutting the protrusion 11 is the end face where the base abuts the protrusion 11 and the deformable block 31 are connected. When the deformable block 31 is connected to the side of the base abutting the protrusion 11, the deformable block 31 is in contact with the power-conducting point 15. The power-conducting point 15 is connected to the base built-in circuit 14 in the base 10. The base built-in circuit 14 supplies power to the deformable block 31 through the power-conducting point 15.

[0081] The preferred embodiments of this utility model have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to this utility model. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A horizontal moving device, characterized in that, The horizontal moving device includes: Base; The movable component is disposed within the base; A piezoelectric mechanism includes a deformable block. One end of the deformable block in a first direction is connected to the bottom end of the base, and the other end of the deformable block in the first direction abuts against the bottom end of the movable part. The deformable block is designed to bend and deform in a second direction perpendicular to the first direction when the applied current changes, so as to drive the movable part to move along the second direction.

2. The horizontal moving device as described in claim 1, characterized in that, The piezoelectric mechanism further includes an abutment block, with one end of the deformable block in the first direction connected to one end of the abutment block, and the other end of the abutment block abutting against the bottom end of the movable part, causing the deformable block to abut against the bottom end of the movable part through the abutment block; Alternatively, the base may have a base abutment protrusion at its bottom end, the movable part may have a movable part abutment protrusion at its bottom end, one end of the deformable block in the first direction may be connected to the base abutment protrusion, and the other end of the deformable block in the first direction may directly or through an abutment block abut against the movable part abutment protrusion.

3. The horizontal moving device as described in claim 2, characterized in that, A power-conducting point is provided on the end face of the base that abuts against the protrusion and connects to the deformable block. The deformable block is in contact with the power-conducting point, and the power-conducting point is connected to the base's built-in circuitry. The base's built-in circuitry supplies power to the deformable block through the power-conducting point.

4. The horizontal moving device as described in claim 1, characterized in that, The movable component is a carrier or a substrate.

5. The horizontal moving device as described in claim 1, characterized in that, The horizontal moving device further includes a pressing mechanism, which is connected to the movable part and the base respectively. The pressing mechanism presses the movable part against the piezoelectric mechanism and resets it after it moves along the second direction. And / or, the horizontal moving device further includes: a friction reduction mechanism, which is respectively disposed between the outer side wall of the movable part and the inner side wall of the base, and is used to reduce the frictional force between the movable part and the base during relative movement.

6. The horizontal moving device as described in claim 5, characterized in that, The clamping mechanism employs one or more combinations of spring sheets, pre-embedded elastic elements, and rubber elastic elements; And / or, the base has one or more top protrusions at its top, the clamping mechanism includes springs, the number of springs is the same as the number of top protrusions, one end of a single spring is connected to a corresponding top protrusion, and the other end of a single spring is connected to the top of the movable part.

7. The horizontal moving device as described in claim 6, characterized in that, There are two top bosses, which are located on one side of the top of the base near the deformable block in a second direction.

8. The horizontal moving device as described in claim 5, characterized in that, The friction reduction mechanism employs one or more combinations of balls, rollers, and guide shafts.

9. The horizontal moving device according to any one of claims 1 to 8, characterized in that, The horizontal moving device further includes: A position sensor, which is mounted on the base; A sensing magnet is disposed at the bottom end of the component to be moved. The sensing magnet is positioned opposite to the position sensor. The position of the component to be moved is monitored through the cooperation of the sensing magnet and the position sensor.

10. The horizontal moving device as claimed in claim 9, characterized in that, The position sensor is powered by the built-in circuitry within the base.

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