Galvanometer with improved structure

Abstract

The utility model discloses a galvanometer with an improved structure, which comprises a fixed base, an elastic frame body, a lens, a coil group and a magnet group, and is characterized in that the elastic frame body comprises an inner frame and an outer frame, the lens is arranged in the inner frame, and the lens is vertically aligned with a base through hole of the fixed base; a plurality of elastic arms are arranged between the inner frame and the outer frame, the inner frame, the outer frame and the elastic arms are of an integrated structure, and an elastic frame body is of a metal reed structure formed by punching a metal sheet. The outer frame is fixedly mounted on the upper surface of the fixed base; the magnet group comprises four driving magnets, the lower surface of each edge part of the inner frame is respectively provided with one driving magnet, and each driving magnet respectively extends into the through hole of the base; and the coil group comprises four driving coils, and the driving coils are respectively positioned and clamped in corresponding coil mounting grooves in the side wall of the through hole of the base. By means of the structural design, the device has the advantages of being novel in design, simple in structure and good in structural compactness.

Description

Technical Field

[0001] The utility model relates to the technical field of galvanometer devices, in particular to a galvanometer with an improved structure. Background Art

[0002] A projector is a device that projects images or videos onto a screen or wall. It has been widely used in homes, offices, schools and entertainment venues. In order to improve the resolution and clarity of a projector, a galvanometer device is often used. When working, the galvanometer device changes the angle of light through reciprocating vibration or swinging motion, so that the original pixel is divided into multiple pixels, and multiple pixels are superimposed to obtain a higher resolution image.

[0003] Among them, the application publication number is: CN115657295A, and the patent name is: A Chinese invention patent application for a galvanometer device capable of biaxial linear motion, which discloses a galvanometer device; specifically, the galvanometer device capable of biaxial linear motion includes a fixed base, a galvanometer assembly installed on the upper end side of the fixed base, the galvanometer assembly includes a movable outer frame and a movable inner frame respectively in a rectangular full-surrounding shape, the movable inner frame is equipped with a lens, the movable outer frame is installed on the fixed base through two outer frame spring sheets arranged oppositely and spaced and extending respectively along the Y-axis direction, and the movable inner frame is installed on the movable outer frame through two inner frame spring sheets arranged oppositely and spaced and extending respectively along the X-axis direction; the movable outer frame is equipped with an outer frame magnet, the middle part of the movable inner frame is equipped with an inner frame magnet, and the fixed base is equipped with an outer frame drive coil located directly below the outer frame magnet and an inner frame drive coil located directly below the inner frame magnet.

[0004] It needs to be explained that in the process of the coil being energized and driving the magnet to move, a magnetic field is generated after the coil is energized, and the coil interacts with the magnet after being energized. At this time, under the action of the dynamic Ampere force F=NBiL (N is the number of turns of the coil, B is the magnetic field strength of the magnet, i is the current passing through the coil, and L is the effective length of the coil), the movable frame performs a swinging motion, thereby causing the lens to swing.

[0005] It should be pointed out that the above-mentioned galvanometer device capable of biaxial linear motion has the following defects, specifically:

[0006] Defect 1. The component structure consisting of the movable outer frame, the movable inner frame, the outer frame spring sheet, and the inner frame spring sheet adopts a split structure design, which is complex and will significantly increase the product assembly process;

[0007] Defect 2: Each driving coil is located directly below the corresponding magnet, that is, the driving coil and the corresponding magnet are arranged opposite each other with an upper and lower interval; in addition, the component structure composed of the movable outer frame, the movable inner frame, the outer frame spring sheet and the inner frame spring sheet is located above the fixed base; the above structural design will significantly increase the thickness of the entire product, and the structural compactness is poor. Utility Model Content

[0008] The utility model aims to provide a galvanometer with improved structure to address the deficiencies of the prior art. The galvanometer with improved structure has novel design, simple structure and good compactness.

[0009] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.

[0010] A galvanometer with improved structure comprises a fixed base, an elastic frame, a lens, a wire package group, and a magnet group. The elastic frame comprises an inner frame in a rectangular shape and an outer frame surrounding the inner frame.

[0011] The fixed base is provided with a base through hole which penetrates vertically, the lens is installed on the inner frame, and the lens is vertically aligned with the base through hole;

[0012] A plurality of elastic arms arranged at intervals are provided between the inner frame and the outer frame. The inner frame, the outer frame and the elastic arms are an integrated structure, and the elastic frame body is a metal spring structure formed by punching a metal sheet. The outer frame is fastened to the upper surface of the fixed base.

[0013] The magnet group includes four driving magnets, and a driving magnet is respectively installed on the lower surface of each side of the inner frame, and each driving magnet extends into the through hole of the base respectively;

[0014] The wire package group includes four driving wire packages, and the side walls of the base through hole are respectively provided with wire package mounting grooves corresponding to the driving wire packages, and each driving wire package is respectively positioned and mounted in the corresponding wire package mounting groove;

[0015] Each driving magnet corresponds to a driving coil, and each driving coil is located outside the corresponding driving magnet.

[0016] Wherein, each of the driving magnets is bonded to the lower surface of the corresponding edge of the inner frame by glue, and each edge of the inner frame is provided with a first glue hole for filling glue at the installation position of the corresponding driving magnet.

[0017] The lens is bonded to the lower surface of the inner frame by glue, and a second glue hole for filling glue is opened at the lens installation position of the inner frame.

[0018] Among them, the structurally improved galvanometer also includes an FPC circuit board, the FPC circuit board includes a wire package welding portion in a rectangular full-surrounding shape, the wire package welding portion of the FPC circuit board is fixed to the lower surface of the fixed base, and each of the driving wire packages is respectively welded to the wire package welding portion of the FPC circuit board to achieve electrical connection.

[0019] Wherein, the elastic frame is a stainless steel spring structure.

[0020] Compared with the prior art, the present invention has the following beneficial effects, specifically:

[0021] 1. The inner frame, outer frame and elastic arm of the elastic frame are an integrated structure, and the entire elastic frame is a sheet-like structure. Compared with the prior art, the elastic frame with an integrated structure design has the advantages of simple structure and convenient and quick installation;

[0022] 2. Since each driving magnet is respectively inserted into the base through hole of the fixed base, and each driving wire package is respectively clamped in the wire package clamping groove at the side wall of the base through hole, the driving magnet and driving wire package of the utility model can effectively utilize the thickness space of the fixed base, thereby making the overall structure more compact;

[0023] 3. Therefore, the structurally improved galvanometer of the utility model has the advantages of novel design, simple structure and good compactness. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below with reference to the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0025] Figure 1 It is a structural schematic diagram of the utility model.

[0026] Figure 2 for Figure 1 Schematic diagram of the decomposition.

[0027] Figure 3 It is a structural schematic diagram of the utility model from another perspective.

[0028] exist Figures 1 to 3 Included are:

[0029] 1-fixed base; 11-base through hole; 12-wire package mounting slot; 2-elastic frame; 21-inner frame; 211-first glue dispensing hole; 212-second glue dispensing hole; 22-outer frame; 23-elastic arm; 3-lens; 4-driving magnet; 5-driving wire package; 6-FPC circuit board; 61-wire package welding part. DETAILED DESCRIPTION

[0030] The present invention will be described below in conjunction with specific implementation methods.

[0031] Embodiment 1, as Figures 1 to 3 As shown, a galvanometer with improved structure includes a fixed base 1, an elastic frame 2, a lens 3, a wire package group, and a magnet group. The elastic frame 2 includes an inner frame 21 in a rectangular shape and an outer frame 22 surrounding the inner frame 21.

[0032] Among them, Figure 2 and Figure 3 As shown, the fixed base 1 is provided with a base through hole 11 which penetrates vertically, the lens 3 is mounted on the inner frame 21 , and the lens 3 is vertically aligned with the base through hole 11 .

[0033] Further, such as Figure 1 and Figure 2 As shown, a plurality of elastic arms 23 are arranged at intervals between the inner frame 21 and the outer frame 22. The inner frame 21, the outer frame 22 and the elastic arms 23 are an integrated structure, and the elastic frame body 2 is a metal spring structure punched out of a metal sheet; the outer frame 22 is fastened to the upper surface of the fixed base 1. It should be explained that the elastic frame body 2 of the first embodiment can be punched out of a SUS301 stainless steel sheet, that is, the elastic frame body 2 is a SUS301 stainless steel spring structure, which has the advantages of good elasticity and good strength.

[0034] Furthermore, Figures 1 to 3 As shown, the magnet group includes four driving magnets 4 , and a driving magnet 4 is respectively installed on the lower surface of each side of the inner frame 21 , and each driving magnet 4 extends into the base through hole 11 .

[0035] Also, if Figures 1 to 3 As shown, the coil group includes four driving coils 5, and the side walls of the base through hole 11 are respectively provided with coil clamping grooves 12 corresponding to each driving coil 5, and each driving coil 5 is respectively positioned and clamped in the corresponding coil mounting groove; each driving magnet 4 corresponds to a driving coil 5, and each driving coil 5 is respectively located on the outside of the corresponding driving magnet 4.

[0036] It should be pointed out that, for the elastic frame 2 of the first embodiment, the inner frame 21, the outer frame 22 and the elastic arm 23 are an integrated structure, and the entire elastic frame 2 is a sheet-like structure. The elastic frame 2 with an integrated structural design has the advantages of simple structure and convenient and quick installation; compared with the prior art, the elastic frame 2 of the first embodiment can effectively simplify the assembly process of the galvanometer device.

[0037] It should be further pointed out that since each driving magnet 4 extends into the base through hole 11 of the fixed base 1, and each driving coil 5 is clamped in the coil clamping groove 12 on the side wall of the base through hole 11, the driving magnet 4 and driving coil 5 of the first embodiment can effectively utilize the thickness space of the fixed base 1, thereby making the overall structure more compact.

[0038] In summary, it can be seen that, through the above structural design, the structurally improved galvanometer of the first embodiment has the advantages of novel design, simple structure and good compactness.

[0039] Embodiment 2, as Figure 1 and Figure 2 As shown, the difference between the second embodiment and the first embodiment is that each driving magnet 4 is bonded to the lower surface of the corresponding edge of the inner frame 21 by glue, and each edge of the inner frame 21 is provided with a first glue hole 211 for filling glue at the installation position of the corresponding driving magnet 4.

[0040] For the first glue hole 211 opened in the inner frame 21 , when the driving magnet 4 is installed on the lower surface of the edge of the inner frame 21 by gluing, the first glue hole 211 will be filled with glue, thereby increasing the bonding strength between the driving magnet 4 and the inner frame 21 .

[0041] Embodiment three, as Figure 1 and Figure 2 As shown, the difference between the third embodiment and the first embodiment is that the lens 3 is bonded to the lower surface of the inner frame 21 by glue, and the inner frame 21 is provided with a second glue hole 212 for filling glue at the installation position of the lens 3.

[0042] For the second glue hole 212 opened in the inner frame 21 , when the lens 3 is mounted on the lower surface of the inner frame 21 by gluing, the second glue hole 212 will be filled with glue, thereby increasing the bonding strength between the lens 3 and the inner frame 21 .

[0043] Embodiment 4, as Figures 1 to 3 As shown, the difference between the fourth embodiment and the first embodiment is that the structurally improved galvanometer also includes an FPC circuit board 6, the FPC circuit board 6 includes a wire package welding portion 61 in a rectangular full-surrounding shape, the wire package welding portion 61 of the FPC circuit board 6 is fixed to the lower surface of the fixed base 1, and each driving wire package 5 is respectively welded to the wire package welding portion 61 of the FPC circuit board 6 to achieve electrical connection.

[0044] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A galvanometer with improved structure, comprising a fixed base (1), an elastic frame (2), a lens (3), a wire package group, and a magnet group, wherein the elastic frame (2) comprises an inner frame (21) in a rectangular shape and an outer frame (22) surrounding the inner frame (21); The fixed base (1) is provided with a base through hole (11) which penetrates vertically, the lens (3) is mounted on the inner frame (21), and the lens (3) is vertically aligned with the base through hole (11); Features: A plurality of elastic arms (23) are arranged at intervals between the inner frame (21) and the outer frame (22); the inner frame (21), the outer frame (22), and the elastic arms (23) are an integrated structure, and the elastic frame body (2) is a metal spring structure formed by punching a metal sheet; the outer frame (22) is fixedly mounted on the upper surface of the fixed base (1); The magnet group comprises four driving magnets (4), one driving magnet (4) is respectively mounted on the lower surface of each side of the inner frame (21), and each driving magnet (4) extends into a base through hole (11); The wire package group comprises four driving wire packages (5), and the side walls of the base through hole (11) are respectively provided with wire package mounting grooves (12) corresponding to the driving wire packages (5), and each driving wire package (5) is respectively positioned and mounted in the corresponding wire package mounting groove; Each driving magnet (4) corresponds to a driving coil (5), and each driving coil (5) is located outside the corresponding driving magnet (4).

2. The structure-improved galvanometer according to claim 1, characterized in that: Each of the driving magnets (4) is bonded to the lower surface of the corresponding edge of the inner frame (21) by glue, and each edge of the inner frame (21) is provided with a first glue hole (211) for filling glue at the installation position of the corresponding driving magnet (4).

3. The structure-improved galvanometer according to claim 1, characterized in that: The lens (3) is bonded to the lower surface of the inner frame (21) by means of glue, and the inner frame (21) is provided with a second glue hole (212) for filling glue at the lens (3) installation position.

4. The structure-improved galvanometer according to claim 1, characterized in that: The structurally improved galvanometer further comprises an FPC circuit board (6), the FPC circuit board (6) comprising a wire package welding portion (61) in a rectangular full-circuit shape, the wire package welding portion (61) of the FPC circuit board (6) being fixed to the lower surface of the fixed base (1), and each of the driving wire packages (5) is respectively welded to the wire package welding portion (61) of the FPC circuit board (6) to achieve electrical connection.

5. The structure-improved galvanometer according to claim 1, characterized in that: The elastic frame (2) is a stainless steel spring structure.

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