Novel galvanometer device

Abstract

The utility model discloses a novel galvanometer device, which comprises a bearing base, a reed, a lens, a driving magnet and a driving coil, the driving magnet is mounted on the reed, the driving coil is mounted on the bearing base, and the driving magnet is opposite to the driving coil; the reed comprises an annular base portion in a circular ring shape, and a vertically-penetrating circular through hole is formed in the middle of the annular base portion. Two elastic arms which extend outwards in the radial direction are arranged on the edge of the outer end of the annular base part, the two elastic arms are aligned in the radial direction, a fixing part is arranged at the outer end of each elastic arm, and each fixing part is installed on the bearing base in a fastened mode; the lens is in a circular shape, and the lens is installed on the annular base and blocks the circular through hole. A magnet installation portion protruding outwards is further arranged on the edge portion of the outer end of the annular base portion of the reed, and the driving magnet is installed on the magnet installation portion. By means of the structural design, the device has the advantages of being novel in design, simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of optical devices, in particular to a new type of galvanometer device. 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.

[0003] For projectors, in order to improve resolution and clarity, 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 point is divided into multiple pixel points, and a higher resolution image is obtained by superimposing multiple pixel points.

[0004] Among them, the Chinese utility model patent with the authorization announcement number of CN219266768U and the patent name of polarizer and projector discloses a galvanometer device; specifically, the polarizer includes a mounting frame, a spring piece, a lens, a magnetic stripe group, and a coil group, the spring piece includes an outer frame part, an inner frame part, and an elastic arm connected between the outer frame part and the inner frame part, and the lens is installed on the inner frame part; the magnetic stripe group is installed on the lower surface of the inner frame part, the coil group is installed on the mounting frame, and the coil group and the magnetic stripe group are arranged at a relative interval; there are two elastic arms arranged oppositely, the two elastic arms are arranged at the diagonals of the inner frame part, the connecting line of the two elastic arms is the first axis, the first axis divides the spring piece into a first area and a second area, the magnetic stripe group and the coil group are both installed in the first area or the second area, so that the electromagnetic action between the magnetic stripe group and the coil group can drive the inner frame part to swing around the first axis; the magnetic stripe group includes a first magnetic stripe and a second magnetic stripe, and the coil group includes a first coil and a second coil.

[0005] For the above-mentioned polarizer, during its operation, when the coil group is energized, the magnetic field generated by the coil group causes the magnetic stripe group to shift, and by changing the direction of the current passing through the coil group, the inner frame can be made to reciprocate along the first axis as the rotation axis under the elastic force of the elastic arm, thereby indirectly driving the lens to reciprocate about the first axis of the spring plate as the rotation axis, thereby achieving the purpose of diagonal swinging of the lens along the entire polarizer.

[0006] It should be noted that the above polarizer has the following defects, specifically:

[0007] Defect 1. The spring piece is composed of an outer frame part, an inner frame part and two elastic arms in an integrated structure. The two elastic arms are aligned and form the rotation axis of the inner frame part. The spring piece structure is relatively complicated.

[0008] Defect 2: The power for the reciprocating rotation of the inner frame along the axis comes from two magnetic strips and two coils, and the power structure is relatively complicated. Utility Model Content

[0009] The utility model aims to provide a new type galvanometer device in view of the deficiencies in the prior art. The new type galvanometer device has novel design, simple structure and low cost.

[0010] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.

[0011] A novel galvanometer device includes a bearing base, a reed, a lens, a driving magnet, and a driving wire package. The driving magnet is installed on the reed, and the driving wire package is installed on the bearing base, and the driving magnet and the driving wire package are directly opposite to each other.

[0012] The spring sheet includes an annular base in the shape of an annulus, and a circular through hole is vertically penetrated in the middle of the annular base; two elastic arms are respectively radially extended outward at the outer edge of the annular base, and the two elastic arms are radially aligned, and the outer end of each elastic arm is respectively provided with a fixing part, and each fixing part is respectively fastened and installed on the bearing base;

[0013] The lens is circular in shape, mounted on the annular base and blocking the circular through hole;

[0014] The outer end edge of the annular base of the spring leaf is also provided with a magnet mounting portion protruding outward, and the driving magnet is mounted on the magnet mounting portion.

[0015] Wherein, the protruding direction of the magnet mounting portion is perpendicular to the extending direction of the elastic arm.

[0016] Wherein, each fixing portion of the spring sheet is provided with a positioning hole;

[0017] The bearing base is respectively provided with upwardly protruding mounting bosses corresponding to the fixing parts of the spring sheet, and the upper surface of each mounting boss is respectively provided with a positioning column;

[0018] The positioning columns of each mounting boss are respectively inserted into the positioning holes on the corresponding sides, and each fixing portion of the spring sheet is respectively screwed and fastened to the mounting boss on the corresponding side by fastening screws.

[0019] The supporting base is provided with a base through hole vertically aligned with the lens, a wire package installation groove is provided at the edge of the base through hole, and the driving wire package is embedded and fixed in the wire package installation groove.

[0020] Wherein, the bearing base is provided with an FPC circuit board beside the driving line package, and the driving line package is electrically connected to the FPC circuit board.

[0021] The beneficial effects of the utility model are as follows: the utility model is a novel galvanometer device, which includes a bearing base, a spring, a lens, a driving magnet, and a driving coil. The driving magnet is mounted on the spring, and the driving coil is mounted on the bearing base, and the driving magnet is directly opposite to the driving coil; the spring includes an annular base in the shape of an annular ring, and the middle of the annular base has a circular through hole that penetrates vertically; the outer edge of the annular base is provided with two elastic arms that extend radially outward respectively, and the two elastic arms are radially aligned, and the outer end of each elastic arm is respectively provided with a fixing part, and each fixing part is respectively fixedly mounted on the bearing base; the lens is in a circular shape, and the lens is mounted on the annular base and blocks the circular through hole; the outer edge of the annular base of the spring is also provided with a magnet mounting part that protrudes outward, and the driving magnet is mounted on the magnet mounting part. Through the above structural design, the utility model has the advantages of novel design, simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 for Figure 1 An enlarged schematic diagram of the "A" position is shown.

[0025] Figure 3 It is an exploded schematic diagram of the utility model.

[0026] exist Figures 1 to 3 Included are:

[0027] 1-bearing base; 11-mounting boss; 12-positioning column; 13-base through hole; 14-wire package mounting groove; 2-spring; 21-annular base; 22-circular through hole; 23-elastic arm; 24-fixing part; 25-magnet mounting part; 26-positioning hole; 3-lens; 4-driving magnet; 5-driving wire package; 6-FPC circuit board. DETAILED DESCRIPTION

[0028] The present invention will be described below in conjunction with specific implementation methods.

[0029] Embodiment 1, as Figures 1 to 3 As shown, a new type of galvanometer device includes a supporting base 1, a reed 2, a lens 3, a driving magnet 4, and a driving coil 5. The driving magnet 4 is installed on the reed 2, and the driving coil 5 is installed on the supporting base 1, and the driving magnet 4 and the driving coil 5 are opposite to each other.

[0030] The spring leaf 2 includes an annular base 21 in the shape of a circular ring, and a circular through hole 22 vertically passing through the middle of the annular base 21; the outer edge of the annular base 21 is provided with two elastic arms 23 extending radially outward respectively, and the two elastic arms 23 are radially aligned, and the outer end of each elastic arm 23 is respectively provided with a fixing portion 24, and each fixing portion 24 is respectively fastened and installed on the supporting base 1.

[0031] Furthermore, the lens 3 is circular in shape, and is mounted on the annular base 21 and blocks the circular through hole 22 .

[0032] Furthermore, the outer edge of the annular base 21 of the spring leaf 2 is also provided with a magnet mounting portion 25 protruding outward, and the driving magnet 4 is mounted on the magnet mounting portion 25 .

[0033] It should be explained that, for the reed 2 of the first embodiment, its annular base 21, elastic arm 23, fixing portion 24 and magnet mounting portion 25 are an integrated structure; specifically, the reed 2 of the first embodiment can be formed by punching a stainless steel sheet, that is, the integrated reed 2 is a stainless steel sheet structure.

[0034] During the operation of the new galvanometer device of the first embodiment, the magnetic field generated after the driving coil 5 is energized acts on the driving magnet 4, thereby causing the magnet mounting portion 25 of the reed 2 to flip and swing along the axis formed by the two elastic arms 23, and finally causing the lens 3 mounted on the annular base 21 of the reed 2 to flip and swing.

[0035] It should be emphasized that the first embodiment of the present invention can drive the reed 2 to move by cooperating with a driving coil 5 and a driving magnet 4. Compared with the driving structure composed of two coils and two magnetic strips in the prior art, the structure of the first embodiment of the present invention is simpler and the cost is lower. In addition, compared with the prior art, the reed 2 of the first embodiment of the present invention does not have an outer frame structure, that is, the overall structure of the reed 2 is simpler and the cost is lower.

[0036] Based on the above, it can be seen that through the above structural design, the new galvanometer device of the first embodiment has the advantages of novel design, simple structure and low cost.

[0037] Embodiment 2, as Figure 1 and Figure 2 As shown, the difference between the second embodiment and the first embodiment is that the protruding direction of the magnet mounting portion 25 is perpendicular to the extending direction of the elastic arm 23 .

[0038] Embodiment three, as Figure 1 and Figure 3 As shown, the difference between the third embodiment and the first embodiment is that each fixing portion 24 of the spring leaf 2 is respectively provided with a positioning hole 26 .

[0039] In addition, the supporting base 1 is respectively provided with mounting bosses 11 protruding upwards corresponding to each fixing portion 24 of the spring sheet 2 , and a positioning column 12 is respectively provided on the upper surface of each mounting boss 11 .

[0040] In addition, the positioning columns 12 of each mounting boss 11 are respectively inserted into the positioning holes 26 on the corresponding side, and each fixing portion 24 of the spring leaf 2 is screwed and fastened to the mounting boss 11 on the corresponding side by a fastening screw.

[0041] In the process of installing the spring leaf 2 of the third embodiment on the supporting base 1, the fixing portion 24 of the spring leaf 2 is first positioned by cooperating the positioning column 12 on the mounting boss 11 with the positioning hole 26 of the fixing portion 24 on the corresponding side of the spring leaf 2, and then the fastening screws are installed and each fixing portion 24 is screwed and fastened to the mounting boss 11 on the corresponding side.

[0042] The installation method of the fixing portion 24 of the reed 2 has the advantage of being easy and quick to install.

[0043] Embodiment 4, as Figure 2 and Figure 3 As shown, the difference between the fourth embodiment and the first embodiment is that the supporting base 1 is provided with a base through hole 13 for vertically aligning the lens 3 , the edge of the base through hole 13 is provided with a wire package installation groove 14 , and the driving wire package 5 is embedded and fixed in the wire package installation groove 14 .

[0044] By providing a coil installation groove 14 for positioning and installing the driving coil 5 at the edge of the base through hole 13 , the novel galvanometer device of the fourth embodiment can effectively reduce the overall height, thereby making the overall structure more compact.

[0045] Embodiment 5, as Figures 1 to 3 As shown, the difference between the fifth embodiment and the first embodiment is that the supporting base 1 is provided with an FPC circuit board 6 beside the driving wire package 5 , and the driving wire package 5 is electrically connected to the FPC circuit board 6 .

[0046] 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 novel galvanometer device, comprising a bearing base (1), a reed (2), a lens (3), a driving magnet (4), and a driving wire package (5), wherein the driving magnet (4) is mounted on the reed (2), the driving wire package (5) is mounted on the bearing base (1), and the driving magnet (4) and the driving wire package (5) are directly opposite to each other; Features: The leaf spring (2) comprises an annular base (21) in the shape of an annulus, the middle of the annular base (21) having a circular through hole (22) extending vertically therethrough; the outer edge of the annular base (21) is provided with two elastic arms (23) extending radially outwards respectively, the two elastic arms (23) are radially aligned, the outer end of each elastic arm (23) is provided with a fixing portion (24), and each fixing portion (24) is respectively fixedly mounted on the bearing base (1); The lens (3) is circular in shape, and is mounted on the annular base (21) and blocks the circular through hole (22); The outer edge of the annular base (21) of the leaf spring (2) is also provided with a magnet mounting portion (25) protruding outward, and the driving magnet (4) is mounted on the magnet mounting portion (25).

2. A novel galvanometer device according to claim 1, characterized in that: The protruding direction of the magnet mounting portion (25) is perpendicular to the extending direction of the elastic arm (23).

3. A novel galvanometer device according to claim 1, characterized in that: Each fixing portion (24) of the spring leaf (2) is respectively provided with a positioning hole (26); Each fixing portion (24) of the bearing base (1) corresponding to the spring leaf (2) is respectively provided with an upwardly protruding mounting boss (11), and a positioning column (12) is respectively provided on the upper surface of each mounting boss (11); The positioning columns (12) of each mounting boss (11) are respectively inserted into the positioning holes (26) on the corresponding sides, and each fixing portion (24) of the leaf spring (2) is respectively screwed and fastened to the mounting boss (11) on the corresponding side by means of a fastening screw.

4. A novel galvanometer device according to claim 1, characterized in that: The bearing base (1) is provided with a base through hole (13) vertically aligned with the lens (3), and a wire package installation groove (14) is provided at the edge of the base through hole (13), and the driving wire package (5) is embedded and fixed in the wire package installation groove (14).

5. A novel galvanometer device according to claim 1, characterized in that: The supporting base (1) is provided with an FPC circuit board (6) beside the driving line package (5), and the driving line package (5) is electrically connected to the FPC circuit board (6).

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