Phase conversion device

Abstract

A phase conversion device having a simple configuration and thus reduced in size and weight is provided. [Solution] According to one embodiment of the present disclosure, a phase conversion device is provided, comprising: a fixed part including a base and a first fixed substrate arranged on one surface of the base; a first moving part movable along a first direction on one surface of the base, the first moving part including a first moving substrate facing the first fixed substrate; and a guide bracket fixed to one side of the fixed part, configured to guide the first directional movement of the first moving part, wherein the first moving substrate includes a plurality of first moving strips arranged in a line along a second direction perpendicular to the first direction.

Description

Technical Field

[0001] The present disclosure relates to a phase conversion device.

Background Art

[0002] The content described in this part merely provides background information of the present disclosure and does not constitute prior art.

[0003] Although it is most efficient in terms of coverage for an antenna device to form a beam in the horizontal direction, there may be cases where the beam angle needs to be adjusted in the vertical direction due to reasons such as interference and loss. In this case, the beam angle in the vertical direction of the antenna device will be adjusted through a mechanical beam tilt method or an electrical beam tilt method.

[0004] The mechanical beam tilt method is a method of adjusting the beam angle by directly tilting the antenna device downward. Although it is a simple method, such a method has the drawback of being somewhat troublesome for various reasons such as the operator's on-site visit and power cut during operation.

[0005] The electrical beam tilt method is a method based on a multi-layer phase shifter (MLPS). Specifically, the electrical beam tilt method adjusts the beam angle by feeding signals with different phases to a plurality of radiating elements arranged vertically.

[0006] In order to implement the electrical beam tilt method, a phase conversion device is provided in the antenna device. The phase conversion device appropriately delays the input signal so that a phase difference occurs between the input signal and the output signal. At this time, the delay of the input signal is realized by changing the length of the transmission line or the signal transmission speed in the transmission line.

[0007] Patent Publication No. 2010-0122005 (hereinafter referred to as Patent Document 1), which is a conventional phase conversion device, discloses a fixed substrate having one input port and a plurality of output ports and a moving substrate having a variable strip. However, Patent Document 1 has a drawback that the fixed substrate and the moving substrate are provided only on one side of the phase conversion device, resulting in poor space efficiency.

[0008] On the other hand, recently, as base stations and repeaters of mobile communication systems, multi-band frequency antenna devices capable of servicing various bands have been widely used. The multi-band antenna device needs to individually adjust the phases of various band frequencies. Therefore, the number of phase conversion devices provided in the antenna device becomes larger, and thus, the phase conversion device needs to be made smaller and lighter.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0010] Therefore, the main object of the present disclosure is to provide a phase conversion device that is miniaturized and lightweight by having a simple configuration.

[0011] In addition, the main object of the present disclosure is to design such that a plurality of moving strips are formed on a sub-substrate of the moving substrate, and to reduce the size of the fixed substrate to lower the manufacturing cost.

[0012] It should be noted that the main object of the present disclosure is to improve the space utilization of the antenna device by reducing the installation space of the phase conversion device in the internal space of the antenna device.

[0013] Furthermore, the main object of the present disclosure is to provide a phase conversion device that is easy to repair and reassemble.

Means for Solving the Problems

[0014] According to an embodiment of the present disclosure, a fixed part including a base and a first fixed substrate disposed on one surface of the base, and a first moving part movable along a first direction on one surface of the base, the first moving part including a first moving substrate facing the first fixed substrate, and a guide bracket fixed to one side of the fixed part, the guide bracket being configured to guide the movement of the first moving part in the first direction, the first moving substrate including a plurality of first moving strips arranged side by side along a second direction perpendicular to the first direction, a phase conversion device is provided.

Effects of the Invention

[0015] As described above, according to this embodiment, the phase conversion device is miniaturized and lightened, enabling a space-efficient design of the antenna device and reducing the manufacturing cost.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

[0017] Hereinafter, some embodiments of the present disclosure will be described in detail through exemplary drawings. When adding reference numerals to the components of each drawing, it should be noted that for the same components, as much as possible, the same numerals are used even if they are shown in different drawings. In describing the present disclosure, if it is determined that a specific description of related known configurations or functions obscures the gist of the present disclosure, the detailed description thereof will be omitted.

[0018] When explaining the components of the embodiments according to the present disclosure, symbols such as first, second, i), ii), a), b), etc. may be used. Such symbols are only for distinguishing the components from other components, and the essence, order, or sequence of the corresponding components is not limited by the symbols. When a certain part of this specification says that a certain component "includes" or "comprises", this means that, unless explicitly stated to the contrary, it does not exclude other components, but may further include other components.

[0019] FIG. 1 is a perspective view of a phase conversion device 10 according to an embodiment of the present disclosure.

[0020] FIGS. 2 and 3 are exploded perspective views of the phase conversion device 10 according to an embodiment of the present disclosure.

[0021] Referring to FIGS. 1 to 3, the phase conversion device 10 includes a fixed part 110, a first moving part 120, a second moving part 130, and a guide bracket 140.

[0022] The fixed part 110 includes a first fixed substrate 112, a second fixed substrate 114, and a base 116.

[0023] The first fixed substrate 112 is disposed on one surface of the base 116, and the second fixed substrate 114 is disposed on the other surface of the base 116.

[0024] Circuit patterns 117 and 119 are respectively formed on the first fixed substrate 112 and the second fixed substrate 114. The circuit patterns 117 and 119 formed on the fixed substrates 112 and 114 are electrically coupled to the moving strips of the corresponding moving substrates 124 and 126.

[0025] Each of the circuit patterns 117 and 119 is connected to at least one input port and a plurality of output ports. Each of the circuit patterns 117 and 119 shares at least one input port, or each of the circuit patterns 117 and 119 is provided with its own input port.

[0026] Each of the circuit patterns 117 and 119 on the fixed substrates 112 and 114 forms a plurality of transmission lines by being coupled to the moving strips of the corresponding moving substrates 124 and 134.

[0027] The signal received through the input port is transmitted to each output port through each transmission line. The signal transmitted to each output port is transmitted to each antenna element (not shown) through an RF cable or an RF connector, etc.

[0028] When the moving substrates 124 and 134 move relative to the fixed substrates 112 and 114, the moving strips also move relative to the respective circuit patterns 117 and 119. Through this, the length of each transmission line becomes shorter or longer, and thereby, the phase difference between the signals transmitted through each transmission line is adjusted.

[0029] The base 116 is disposed between the first fixed substrate 112 and the second fixed substrate 114. The base 116 is made of Teflon (registered trademark) material having a low loss rate in a high-frequency environment. However, the present disclosure is not limited thereto, and the base 116 may be made of other materials.

[0030] The first moving part 120 is configured to be movable along a first direction on one surface of the first fixed substrate 112. Here, the first direction is a direction parallel to the longitudinal direction of the phase conversion device 10. For example, based on FIGS. 1 to 3, the first direction is a direction parallel to the X axis.

[0031] The first moving part 120 includes a first moving body 122 and a first moving substrate 124.

[0032] The first moving body 122 forms the outer shape of the first moving part 120, and the first moving substrate 124 is disposed on one surface of the first moving body 122 facing the first fixed substrate 112. In this case, the first moving substrate 124 faces the first fixed substrate 112.

[0033] The first moving substrate 124 includes a plurality of first moving strips 126 and a plurality of second moving strips 128.

[0034] The plurality of first moving strips 126 are arranged to be aligned along a second direction perpendicular to the first direction, and the plurality of second moving strips 128 are arranged to be aligned along the second direction. Here, the second direction is a direction parallel to the width direction of the phase conversion device 10. For example, based on FIGS. 1 to 3, the second direction is a direction parallel to the Y axis.

[0035] By arranging the plurality of moving strips to be aligned along the second direction, the plurality of first moving strips 126 and the plurality of second moving strips 128 each form one strip row. Here, the strip row refers to a plurality of moving strips arranged to be aligned along the second direction.

[0036] Furthermore, the plurality of first moving strips 126 and the plurality of second moving strips 128 are arranged to be aligned along the first direction. In this case, one first moving strip 126 and one second moving strip 128 adjacent thereto form one strip column. Here, the strip column refers to a plurality of moving strips arranged to be aligned in the first direction.

[0037] At this time, the number of strip columns is the same as the number of first moving strips 126 or the number of second moving strips 128. For example, if the number of first moving strips 126 or second moving strips 128 is two, the number of strip columns is two.

[0038] The phase conversion device 10 according to an embodiment of the present disclosure can form a plurality of strip columns on the moving substrates 124 and 134, through which the sizes of the moving substrates 124 and 134 and the fixed substrates 112 and 114 can be reduced. Thereby, the phase conversion device 10 is miniaturized or lightened. A detailed description related thereto will be described in relation to FIG. 4.

[0039] On the other hand, in FIGS. 1 to 3, it is illustrated that two strip rows and two strip columns are formed on the first moving substrate 124, but the present disclosure is not limited thereto. For example, three or more strip rows or three or more strip columns may be formed on the first moving substrate 124.

[0040] The first moving body 122 and the first moving substrate 124 can move along the first direction on one surface of the first fixed substrate 112. At this time, the first moving strips 126 and the second moving strips 128 formed on the first moving substrate 124 can also move along the first direction.

[0041] Through this, the length of each transmission line can be shortened or lengthened, whereby the phase difference between signals transmitted through each transmission line is adjusted.

[0042] The first moving substrate 124 according to an embodiment of the present disclosure includes a plurality of sub-substrates 1242.

[0043] Each moving strip of the plurality of first moving strips 126 and the plurality of second moving strips 128 is formed on each sub-substrate 1242 of the plurality of sub-substrates 1242. That is, one moving strip is formed on one sub-substrate 1242.

[0044] Each sub-substrate 1242 is seated in each receiving groove 1222 of the plurality of receiving grooves 1222 formed on one surface of the first moving body 122.

[0045] At this time, the leaf spring 160 is first seated inside the receiving groove 1222, and then the sub-substrate 1242 is seated.

[0046] Since one leaf spring 160 and one sub-substrate 1242 are accommodated inside each receiving groove 1222, each sub-substrate 1242 is individually biased by the corresponding leaf spring 160. Thereby, the contact property between the first fixed substrate 112 and the first moving substrate 124 is improved.

[0047] A mounting protrusion 1224 is formed inside the receiving groove 1222, and through holes 1244 and 162 through which the mounting protrusion 1224 can penetrate are formed on the sub-substrate 1242 and the leaf spring 160.

[0048] When the sub-substrate 1242 and the leaf spring 160 are seated in the receiving groove 1222, the mounting protrusion 1224 can penetrate through the through holes 1244 and 162, and through this, the sub-substrate 1242 and the leaf spring 160 are aligned inside the receiving groove 1222.

[0049] The second moving part 130 is disposed on the opposite side of the first moving part 120 with respect to the fixed part 110.

[0050] The second moving part 130 is configured to be movable along a first direction on one surface of the second fixed substrate 114. At this time, the second moving part 130 can move separately from the first moving part 120 or move together in conjunction with the first moving part 120.

[0051] The second moving part 130 includes a second moving body 132 and a second moving substrate 134.

[0052] The second moving body 132 forms the outer shape of the second moving part 130, and the second moving substrate 134 is disposed on one surface of the second moving body 132 facing the second fixed substrate 114. In this case, the second moving substrate 134 faces the second fixed substrate 114.

[0053] The second moving substrate 134 includes a plurality of third moving strips 136 and a plurality of fourth moving strips 138.

[0054] The plurality of third moving strips 136 are arranged to be aligned along a second direction, and the plurality of fourth moving strips 138 are arranged to be aligned along the second direction. In this case, the plurality of third moving strips 136 and the plurality of fourth moving strips 138 each form one strip row.

[0055] Furthermore, the plurality of third moving strips 136 and the plurality of fourth moving strips 138 are arranged to be aligned along the first direction.

[0056] In this case, one third moving strip 136 and one adjacent fourth moving strip 138 form one strip column. At this time, the number of strip columns is the same as the number of third moving strips 136 or the number of fourth moving strips 138.

[0057] On the one hand, in FIGS. 1 to 3, although it is illustrated that two strip rows and two strip columns are formed on the second moving substrate 134, the present disclosure is not limited thereto. For example, three or more strip rows, or three or more strip columns may be formed on the second moving substrate 134.

[0058] The second moving body 132 and the second moving substrate 134 move along the first direction on one surface of the second fixed substrate 114. At this time, the third moving strip 136 and the fourth moving strip 138 formed on the second moving substrate 134 also move along the first direction.

[0059] Through this, the length of each transmission line can be shortened or lengthened, and thereby, the phase difference between signals transmitted through each transmission line is adjusted.

[0060] The second moving substrate 134 includes a plurality of sub-substrates 1342.

[0061] Each moving strip of the plurality of third moving strips 136 and the plurality of fourth moving strips 138 is formed on each sub-substrate 1342 of the plurality of sub-substrates 1342. That is, one moving strip is formed on one sub-substrate 1342.

[0062] Each sub-substrate 1342 is individually biased by a corresponding leaf spring 160. Thereby, the contact property between the second fixed substrate 114 and the second moving substrate 134 is improved.

[0063] The phase conversion device 10 according to an embodiment of the present disclosure has a technical feature in that by arranging the first moving part 120 and the second moving part 130 on both side surfaces of the fixed part 110, the phase control of the signal is performed on both sides of the phase conversion device 10. Through this, the phase conversion device 10 is made smaller and lighter.

[0064] The guide bracket 140 guides the first-direction movement of the first moving part 120 and the first-direction movement of the second moving part 130 respectively.

[0065] The guide bracket 140 is fixed to one side of the fixed part 110, for example, to the coupling groove 118 of the fixed part 110. The guide bracket 140 surrounds the fixed part 110 and the moving parts 120, 130 in a state of being fixed to the fixed part 110.

[0066] Through this, the guide bracket 140 can limit the moving directions of the moving parts 120, 130 to the first direction, and can prevent the moving parts 120, 130 from moving in directions other than the first direction.

[0067] On the other hand, since the guide bracket 140 restricts the moving directions of the moving parts 120, 130 to the first direction, the contact between the fixed substrates 112, 114 and the moving substrates 124, 134 is well maintained.

[0068] However, the restraining forces of the guide bracket 140 act differently depending on the respective positions of the moving parts 120, 130. For example, in the regions of the moving parts 120, 130 that are far from the guide bracket 140, relatively smaller restraining forces act than in the regions of the moving parts 120, 130 adjacent to the guide bracket 140.

[0069] The regions of the moving parts 120, 130 that receive small restraining forces may lift off from the fixed part 110. In this case, the contact between the moving parts 120, 130 and the fixed part 110 may deteriorate.

[0070] To prevent this, the phase conversion device 10 includes a plurality of guide brackets 140 arranged along the first direction. The plurality of guide brackets 140 can restrain the moving parts 120, 130 at more points, thereby minimizing the lifting problem of the moving parts 120, 130.

[0071] On the other hand, since a plurality of strip columns are formed on the moving substrates 124 and 134, the number of strip rows formed on the moving substrates 124 and 134 relatively decreases. In this case, as the overall first-direction size of the moving substrates 124 and 134 decreases, the first-direction size of the moving parts 120 and 130 also decreases.

[0072] Therefore, the phase conversion device 10 according to an embodiment of the present disclosure has an effect that sufficient restraint force can be provided to the moving parts 120 and 130 even when a relatively small number of guide brackets 140 are used.

[0073] The phase conversion device 10 additionally includes a holder 150 and a leaf spring 160.

[0074] The holder 150 fixes the phase conversion device 10 to other external members.

[0075] One side of the holder 150 is connected to the fixing part 110, and the other side of the holder 150 is connected to other external members.

[0076] The holder 150 can at least partially surround the fixing part 110 and the moving parts 120 and 130. Through this, the holder 150 can guide the first-direction movement of the moving parts 120 and 130 together with the guide brackets 140.

[0077] The leaf spring 160 is disposed on one side of the first moving part 120 and one side of the second moving part 130. For example, the leaf spring 160 is seated in the accommodation grooves 1222 and 1322 formed in the moving bodies 122 and 132.

[0078] The leaf spring 160 is configured to bias the moving substrates 124 and 134 toward the fixed substrates 112 and 114.

[0079] In FIGS. 1 to 3, the first moving part 120 is illustrated as being disposed above the fixing part 110, and the second moving part 130 is illustrated as being disposed below the fixing part 110, but the present disclosure is not limited thereto.

[0080] For example, the first moving part 120 may be disposed below the fixed part 110, and the second moving part 130 may be disposed above the fixed part 110. In this case, the first fixed substrate 112 is disposed on the lower surface of the base 116, and the second fixed substrate 114 is disposed on the upper surface of the base 116.

[0081] FIG. 4 shows that the phase conversion device 10 according to an embodiment of the present disclosure adjusts the phase difference between signals transmitted through each transmission line via the movement of the first moving part 120.

[0082] Referring to FIG. 4, the first moving substrate 124 moves along the first direction on one surface of the first fixed substrate 112. At this time, the first moving strip 126 and the second moving strip 128 disposed on the first moving substrate 124 also move along the first direction. Through this, the length of each transmission line can be shortened or lengthened, whereby the phase difference between signals transmitted through each transmission line is adjusted.

[0083] The first moving strip 126 and the second moving strip 128 have a convex shape, for example, a "U" shape.

[0084] For example, each first moving strip 126 of the plurality of first moving strips 126 has a convex shape toward the adjacent second moving strip 128, and each second moving strip 128 of the plurality of second moving strips 128 has a convex shape toward the adjacent first moving strip 126.

[0085] When the first moving strip 126 and the second moving strip 128 have a convex shape with respect to each other, the shape of the circuit pattern 117 of the first fixed substrate 112 becomes simpler compared to the case where the first moving strip 126 and the second moving strip 128 have a concave shape with respect to each other, or have a convex shape in the same direction.

[0086] Specifically, with reference to FIG. 4, the region of the circuit pattern 117 coupled to the first moving strip 126 is disposed on the left side of the first moving strip 126, and the region of the circuit pattern 117 coupled to the second moving strip 128 is disposed on the right side of the second moving strip 128. That is, the region of the circuit pattern 117 coupled to the first moving strip 126 and the region of the circuit pattern 117 coupled to the second moving strip 128 are spaced apart from each other.

[0087] In this case, since a complicated design of the circuit pattern 117 for avoiding the overlapping of the regions of the circuit pattern 117 is not required, the shape of the circuit pattern 117 on the first fixed substrate 112 becomes simpler.

[0088] On the other hand, if there is a different moving strip (hereinafter, "additional moving strip") in the left region of the first moving strip 126, when the first moving substrate 124 moves rightward along the first direction, the additional moving strip may enter the region of the circuit pattern 117 coupled to the first moving strip 126.

[0089] Therefore, in order to prevent the problem of intrusion of the additional moving strip and at the same time ensure a sufficient moving range of the first moving substrate 124, the additional moving strip needs to be sufficiently spaced apart from the first moving strip 126 in the first direction.

[0090] As the interval between the moving strips increases, the region where the circuit pattern 117 is not formed on the first fixed substrate 112 increases, and thereby, the overall size of the first fixed substrate 112 becomes larger.

[0091] The phase conversion device 10 according to an embodiment of the present disclosure is configured such that a plurality of strip columns are formed on the first moving substrate 124, so that the number of strip rows formed on the first moving substrate 124 can be reduced.

[0092] For example, the plurality of first moving substrates 124 include a plurality of first moving strips 126 and a plurality of second moving strips 128, and may not include other moving strips.

[0093] That is, with reference to FIG. 4, there may be no moving strips in the left region of the first moving strip 126 and the right region of the second moving strip 128. In this case, only two strip rows are formed on the first moving substrate 124.

[0094] As a result, the area where the circuit pattern 117 is not formed on the first fixed substrate 112, that is, the area for securing the moving range of the first moving substrate 124, is reduced. As a result, the first fixed substrate 112 can have a more compact shape, thereby reducing the manufacturing cost of the first fixed substrate 112.

[0095] However, the present disclosure is not limited to this, and the number of strip rows formed on the first moving substrate 124 is set to be different according to the number of antenna elements to be arranged. For example, three or more strip rows may be formed on the moving substrates 124 and 134 according to an embodiment of the present disclosure.

[0096] On the other hand, signal transmission is performed via the PCB circuit pattern and the RF cable, and more signal loss occurs in the PCB circuit pattern than in the RF cable.

[0097] When the size of the first fixed substrate 112 becomes smaller, the PCB circuit pattern area relatively decreases, and conversely, the RF cable area relatively increases. As a result, the signal loss generated in the phase conversion device 10 is reduced.

[0098] In FIG. 4, the first fixed substrate 112 and the first moving part 120 are exemplarily illustrated, but the above-described content is not limited to only the first fixed substrate 112 and the first moving part 120. Therefore, the content described in relation to FIG. 4 is also directly applicable to the second fixed substrate 114 and the second moving part 130.

[0099] For example, each of the plurality of third moving strips 136 has a convex shape toward the adjacent fourth moving strip 138, and each of the plurality of fourth moving strips 138 has a convex shape toward the adjacent third moving strip 136. Thereby, the shape of the circuit pattern 119 of the second fixed substrate 114 becomes simpler.

[0100] Also, the second moving substrate 134 includes the plurality of third moving strips 136 and the plurality of fourth moving strips 138, and may not include other moving strips. Thereby, the size of the second fixed substrate 114 is reduced. Therefore, the manufacturing cost of the second fixed substrate 114 is reduced, and the signal loss is also reduced as a whole.

[0101] FIG. 5 is a cross-sectional view of the phase conversion device 10 according to an embodiment of the present disclosure taken along the V-V' direction of FIG. 1.

[0102] FIG. 6 is a perspective view of the guide bracket 140 according to an embodiment of the present disclosure. Specifically, FIG. 6(a) illustrates the assembled guide bracket 140, and FIG. 6(b) illustrates the separated guide bracket 140.

[0103] Referring to FIGS. 5 and 6, the guide bracket 140 includes a first section 142, a second section 144, a first shaft member 145, a first roller 146, a second shaft member 147, and a second roller 148.

[0104] The first section 142 is disposed above the fixed portion 110 and has a shape surrounding the first moving portion 120. The second section 144 is disposed below the fixed portion 110 and has a shape surrounding the second moving portion 130. The first section 142 and the second section 144 can be coupled to each other.

[0105] With the first section 142 and the second section 144 coupled to each other, the guide bracket 140 entirely surrounds the fixed part 110, the first moving part 120, and the second moving part 130.

[0106] Thereby, the guide bracket 140 can limit the moving directions of the moving parts 120 and 130 to the first direction, and can prevent the moving parts 120 and 130 from moving in directions other than the first direction.

[0107] The first section 142 includes a first coupling part 1422 and a second coupling part 1424, and the second section 144 includes a third coupling part 1442 and a fourth coupling part 1444.

[0108] The first coupling part 1422 is formed on one side of the first section 142, and the second coupling part 1424 is formed on the other side of the first section 142. Also, the third coupling part 1442 is formed on one side of the second section 144, and the fourth coupling part 1444 is formed on the other side of the second section 144.

[0109] The first coupling part 1422 is disposed at a position corresponding to the third coupling part 1442, and the first coupling part 1422 and the third coupling part 1442 are coupled to each other.

[0110] For example, the first coupling part 1422 and the third coupling part 1442 are coupled to each other via a hook coupling method. In this case, one of the first coupling part 1422 and the third coupling part 1442 includes a hook, and the other of the first coupling part 1422 and the third coupling part 1442 includes a locking groove or a locking hole into which the hook can be coupled.

[0111] The second coupling part 1424 is disposed at a position corresponding to the fourth coupling part 1444, and the second coupling part 1424 and the fourth coupling part 1444 are coupled to each other.

[0112] For example, the second coupling portion 1424 and the fourth coupling portion 1444 are coupled to each other via a hook coupling method. In this case, one of the second coupling portion 1424 and the fourth coupling portion 1444 includes a hook, and the other of the second coupling portion 1424 and the fourth coupling portion 1444 includes a locking groove or a locking hole into which the hook can be coupled.

[0113] The first shaft member 145 and the second shaft member 147 are shaft-shaped members that extend long in the second direction.

[0114] The first shaft member 145 is disposed in the first section 142 and is disposed above the first moving portion 120.

[0115] The first roller 146 is connected to the first shaft member 145 and contacts or faces the upper surface of the first moving body 122.

[0116] The first roller 146 is configured to rotate about the first rotation axis ax1. Here, the first rotation axis ax1 refers to a virtual rotation axis that is parallel to the second direction and passes through the center of the first shaft member 145.

[0117] The manner in which the first roller 146 rotates is a manner in which only the first roller 146 rotates while the first shaft member 145 is fixed to the first section 142, but the present disclosure is not limited thereto. For example, a manner in which both the first roller 146 and the first shaft member 145 rotate while the first shaft member 145 is fixed to the first roller 146 may be used.

[0118] The guide bracket 140 includes a pair of first rollers 146. The pair of first rollers 146 are spaced apart from each other in the second direction on the first shaft member 145.

[0119] In this case, the first guide rib 1226 protruding from the upper surface of the first moving body 122 is disposed between the pair of first rollers 146, and both side surfaces of the first guide rib 1226 in the second direction are supported by the pair of first rollers 146. Through this, the movement of the first moving part 120 in the second direction is blocked, thereby preventing the position of the first moving part 120 from shifting in the second direction.

[0120] The second shaft member 147 is disposed in the second section 144 and below the lower part of the second moving part 130.

[0121] The second roller 148 is connected to the second shaft member 147 and contacts or faces the lower surface of the second moving body 132. Further, the second roller 148 is configured to rotate about the second rotation axis ax2. Here, the second rotation axis ax2 refers to a virtual rotation axis that is parallel to the second direction and passes through the center of the second shaft member 147.

[0122] The manner in which the second roller 148 rotates is such that only the second roller 148 rotates while the second shaft member 147 is fixed to the second section 144, but the present disclosure is not limited thereto. For example, the second roller 148 and the second shaft member 147 may both rotate while the second shaft member 147 is fixed to the second roller 148.

[0123] The guide bracket 140 includes a pair of second rollers 148. The pair of second rollers 148 are spaced apart from each other in the second direction on the second shaft member 147.

[0124] In this case, the second guide rib 1326 protruding from the lower surface of the second moving body 132 is disposed between the pair of second rollers 148, and both side surfaces of the second guide rib 1326 in the second direction are supported by the pair of second rollers 148. Through this, the movement of the second moving part 130 in the second direction is blocked, thereby preventing the position of the second moving part 130 from shifting in the second direction.

[0125] In FIGS. 5 and 6, the first slice 142 is shown as being disposed above the fixed portion 110, and the second slice 144 is shown as being disposed below the fixed portion 110, but the present disclosure is not limited thereto.

[0126] For example, the first slice 142 may be disposed below the fixed portion 110, and the second slice 144 may be disposed above the fixed portion 110. In this case, the first moving portion 120 is disposed below the fixed portion 110, and the second moving portion 130 is disposed above the fixed portion 110.

[0127] The second to fourth embodiments of the present disclosure illustrated in FIGS. 7 to 9 described below differ from one embodiment of the present disclosure illustrated in FIGS. 1 to 6 in that a plurality of moving strips are formed on the sub-substrate. Hereinafter, the description will focus on the differential features of each embodiment of the present disclosure, and repeated descriptions of configurations substantially the same as those of one embodiment of the present disclosure will be omitted.

[0128] FIG. 7 is a perspective view of a first moving portion 220 according to a second embodiment of the present disclosure.

[0129] Referring to FIG. 7, the first moving portion 220 includes a first moving body 222 and a first moving substrate 224.

[0130] The first moving substrate 224 includes a first sub-substrate 2243 and a second sub-substrate 2245 spaced apart from the first sub-substrate 2243 in a first direction.

[0131] A plurality of first moving strips 226 are formed on the first sub-substrate 2243, and a plurality of second moving strips 228 are formed on the second sub-substrate 2245. That is, a plurality of moving strips forming one strip row are disposed on one sub-substrate 2243, 2243.

[0132] Each sub-board 2242 is seated in each of a plurality of receiving grooves 2222 formed on one surface of the first moving body 222. At this time, two leaf springs 260 are first seated inside the receiving groove 2222, and then the sub-boards 2243 and 2245 are seated.

[0133] Since two leaf springs 260 and one sub-board 2243, 2245 are accommodated inside each receiving groove 2222, each sub-board 2243, 2245 is biased by the two corresponding leaf springs 260.

[0134] FIG. 8 is a perspective view of a first moving part 320 according to a third embodiment of the present disclosure.

[0135] Referring to FIG. 8, the first moving part 320 includes a first moving body 322 and a first moving substrate 324. The first moving substrate 324 includes a third sub-board 3242.

[0136] A plurality of first moving strips 326 and a plurality of second moving strips 328 are formed on the third sub-board 3242. That is, all the moving strips of the plurality of first moving strips 326 and the plurality of second moving strips 328 are arranged on one sub-board 3242.

[0137] The third sub-board 3242 is seated in a receiving groove 3222 formed on one surface of the first moving body 322. At this time, four leaf springs 360 are first seated inside the receiving groove 3222, and then the third sub-board 3242 is seated.

[0138] Since four leaf springs 360 and one sub-board 3242 are accommodated inside each receiving groove 3222, the sub-board 3242 is biased by the four leaf springs 260.

[0139] FIG. 9 is a perspective view of a first moving part 420 according to a fourth embodiment of the present disclosure.

[0140] Referring to FIG. 9, the first moving part 420 includes a first moving body 422 and a first moving substrate 424.

[0141] The first moving substrate 424 includes a fourth sub-substrate 4243 and a fifth sub-substrate 4245 spaced apart from the fourth sub-substrate 4243 in a second direction.

[0142] One of the plurality of first moving strips 426 and one of the plurality of second moving strips 428 are formed on the fourth sub-substrate 4243.

[0143] Another one of the plurality of first moving strips 426 and another one of the plurality of second moving strips 428 are formed on the fifth sub-substrate 4245.

[0144] That is, the plurality of moving strips forming one strip column are arranged on one sub-substrate 4243, 4245.

[0145] Each sub-substrate 4243, 4245 is seated in a receiving groove 4222 formed on one surface of the first moving body 422. At this time, two leaf springs 460 are first seated inside the receiving groove 4222, and then each sub-substrate 4243, 4245 is seated.

[0146] Since two leaf springs 460 and one sub-substrate 4243, 4245 are accommodated inside each receiving groove 4222, each sub-substrate 4243, 4245 is biased by the two corresponding leaf springs 460.

[0147] As shown in FIGS. 7 to 9, when a plurality of moving strips are formed on one sub-substrate, the size of the moving substrate is reduced, and further, the manufacturing process of the moving substrate is simplified.

[0148] In FIGS. 7 to 9, the first moving part is illustrated by way of example, but the above-described content is not limited to only the first moving part. Therefore, the content described in relation to FIGS. 7 to 9 is also directly applicable to the second moving part.

[0149] A fifth embodiment of the present disclosure illustrated in FIG. 10 to be described later differs from the second to fourth embodiments of the present disclosure illustrated in FIGS. 7 to 9 in that a relatively small number of leaf springs are used to bias the sub-substrate. Hereinafter, the description will focus on the differential features of the fifth embodiment of the present disclosure, and repeated descriptions of configurations substantially the same as those described above will be omitted.

[0150] FIG. 10 is a perspective view of a first moving part 520 according to a fifth embodiment of the present disclosure.

[0151] Referring to FIGS. 10(a) to 10(c), the first moving part 520 includes a first moving body 522 and a first moving substrate 524.

[0152] The first moving substrate 524 includes a sub-substrate 5242.

[0153] On the sub-substrate 5242, at least two moving strips out of a plurality of first moving strips 526 and a plurality of second moving strips 528 are formed. That is, a plurality of moving strips are formed on one sub-substrate 5242.

[0154] The sub-substrate 5242 according to the fifth embodiment of the present disclosure is configured to be biased by a smaller number of leaf springs 560 as compared with the embodiments illustrated in FIGS. 7 and 9.

[0155] Specifically, referring to FIGS. 10(a) and 10(c), the sub-substrates 5242A and 5242C, which were biased by two leaf springs in FIGS. 7 and 9, are biased by one leaf spring 560.

[0156] Also, referring to FIG. 10(b), the sub-substrate 5242B that was biased by the four leaf springs in FIG. 8 is biased by the two leaf springs 560.

[0157] When one sub-substrate 5242 is biased by a smaller number of leaf springs, the number of leaf springs required to manufacture one phase conversion device decreases. Thereby, the manufacturing cost of the phase conversion device decreases, and further, the manufacturing process of the phase conversion device is simplified.

[0158] In FIG. 10, the first moving part is exemplarily shown, but the above content is not limited to only the first moving part. Therefore, the content described in relation to FIG. 10 is also directly applicable to the second moving part.

[0159] The above description merely exemplarily explains the technical idea of this embodiment. For those with ordinary knowledge in the technical field to which this embodiment belongs, various modifications and deformations are possible without departing from the essential characteristics of this embodiment. Therefore, this embodiment is not intended to limit the technical idea of this embodiment but to explain it, and the scope of the technical idea of this embodiment is not limited by such an embodiment. The protection scope of this embodiment should be interpreted by the scope of the claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of this embodiment.

[0160] [CROSS-REFERENCE TO RELATED APPLICATION] This patent application claims priority to Patent Application No. 10-2021-0003014, filed in Korea on January 11, 2021, which is incorporated herein by reference in its entirety.

Description of Reference Numerals

[0161] 10 Phase conversion device 110 Fixed part 112 First fixed substrate 114 Second fixed substrate 116 Base 120 First moving part 122 First moving body 124 First moving substrate 126 First moving strip 128 Second moving strip 130 Second moving part 132 Second moving body 134 Second moving substrate 136 Third moving strip 138 Fourth moving strip 140 Guide bracket

Claims

1. A fixing part including a base and a first fixing substrate disposed on one surface of the base, A first moving part movable along a first direction on one surface of the first fixing substrate, the first moving part including a first moving substrate facing the first fixing substrate, A second moving part movable along the first direction on one surface of a second fixing substrate included in the fixing part and disposed on the other surface of the base, the second moving part including a second moving substrate facing the second fixing substrate, A phase conversion device including a guide bracket fixed to the fixing part and configured to guide the first-direction movement of the first moving part and the first-direction movement of the second moving part respectively, The first moving substrate, Includes a plurality of first moving strips arranged along a second direction perpendicular to the first direction, The phase conversion device further includes a holder for fixing the phase conversion device to another external member, The holder holds a laminated structure including the fixing part and the first and second moving parts located on both sides of the fixing part from one side surface, The first moving substrate further includes a plurality of second moving strips arranged along the second direction, The plurality of first moving strips and the plurality of second moving strips are arranged along the first direction, The first moving substrate includes a plurality of sub-substrates, Each moving strip of the plurality of first moving strips and the plurality of second moving strips is formed on each sub-substrate of the plurality of sub-substrates. A phase conversion device characterized by this.

2. A fixing part including a base and a first fixing substrate disposed on one surface of the base, A first moving part movable along a first direction on one surface of the first fixing substrate, the first moving part including a first moving substrate facing the first fixing substrate, A second moving part movable along the first direction on one surface of a second fixing substrate included in the fixing part and disposed on the other surface of the base, the second moving part including a second moving substrate facing the second fixing substrate, A phase conversion device including a guide bracket fixed to the fixing part and configured to guide the first-direction movement of the first moving part and the first-direction movement of the second moving part respectively, The first moving substrate, including a plurality of first moving strips arranged side by side along a second direction perpendicular to the first direction; the phase conversion device further includes a holder for fixing the phase conversion device to another external member; the holder holds, from one side surface, a laminated structure including the fixing portion and the first and second moving portions located on both sides of the fixing portion; the first moving substrate further includes a plurality of second moving strips arranged side by side along the second direction; the plurality of first moving strips and the plurality of second moving strips are arranged side by side along the first direction; the first moving substrate includes a first sub-substrate and a second sub-substrate spaced from the first sub-substrate in the first direction; the plurality of first moving strips are formed on the first sub-substrate; the plurality of second moving strips are formed on the second sub-substrate, and the phase conversion device is characterized in this.

3. a fixing portion including a base and a first fixing substrate disposed on one surface of the base; a first moving portion movable along a first direction on one surface of the first fixing substrate, the first moving portion including a first moving substrate facing the first fixing substrate; a second moving portion movable along the first direction on one surface of a second fixing substrate included in the fixing portion and disposed on the other surface of the base, the second moving portion including a second moving substrate facing the second fixing substrate; a phase conversion device including a guide bracket fixed to the fixing portion and configured to guide the first-direction movement of the first moving portion and the first-direction movement of the second moving portion respectively; the first moving substrate is including a plurality of first moving strips arranged side by side along a second direction perpendicular to the first direction; the phase conversion device further includes a holder for fixing the phase conversion device to another external member; the holder holds, from one side surface, a laminated structure including the fixing portion and the first and second moving portions located on both sides of the fixing portion; the first moving substrate further includes a plurality of second moving strips arranged side by side along the second direction; the plurality of first moving strips and the plurality of second moving strips are arranged side by side along the first direction; the first moving substrate includes a third sub-substrate The phase conversion device is characterized in that the plurality of first moving strips and the plurality of second moving strips are formed on the third sub-substrate.

4. A fixing part including a base and a first fixing substrate disposed on one surface of the base, A first moving part movable along a first direction on one surface of the first fixing substrate, the first moving part including a first moving substrate facing the first fixing substrate, A second moving part movable along the first direction on one surface of a second fixing substrate included in the fixing part and disposed on the other surface of the base, the second moving part including a second moving substrate facing the second fixing substrate, A phase conversion device including a guide bracket fixed to the fixing part and configured to guide the first-direction movement of the first moving part and the first-direction movement of the second moving part respectively, The first moving substrate, Includes a plurality of first moving strips arranged side by side along a second direction perpendicular to the first direction, The phase conversion device further includes a holder for fixing the phase conversion device to another external member, The holder holds a laminated structure including the fixing part and the first and second moving parts located on both sides of the fixing part from one side surface, The first moving substrate further includes a plurality of second moving strips arranged side by side along the second direction, The plurality of first moving strips and the plurality of second moving strips are arranged side by side along the first direction, The first moving substrate includes a fourth sub-substrate and a fifth sub-substrate spaced apart from the fourth sub-substrate in the second direction, One first moving strip of the plurality of first moving strips and one second moving strip of the plurality of second moving strips are formed on the fourth sub-substrate, The phase conversion device is characterized in that another first moving strip of the plurality of first moving strips and another second moving strip of the plurality of second moving strips are formed on the fifth sub-substrate.

5. Each first moving strip of the plurality of first moving strips has a convex shape toward an adjacent second moving strip. The phase conversion device according to any one of claims 1 to 4, wherein each of the plurality of second moving strips has a convex shape toward an adjacent first moving strip.

6. The phase conversion device according to claim 5, wherein the first moving substrate does not include other moving strips other than the plurality of first moving strips and the plurality of second moving strips.

7. Furthermore, it includes a leaf spring disposed on one side of the first moving part, The leaf spring is configured to bias the plurality of sub-substrates toward the first fixed substrate, The phase conversion device according to claim 1, wherein at least two moving strips of the plurality of first moving strips and the plurality of second moving strips are formed on the plurality of sub-substrates.

8. Furthermore, it includes a leaf spring disposed on one side of the first moving part, The leaf spring is configured to bias the first sub-substrate and the second sub-substrate toward the first fixed substrate, The phase conversion device according to claim 2, wherein at least two moving strips of the plurality of first moving strips and the plurality of second moving strips are formed on the first sub-substrate and the second sub-substrate.

9. Furthermore, it includes a leaf spring disposed on one side of the first moving part, The leaf spring is configured to bias the third sub-substrate toward the first fixed substrate, The phase conversion device according to claim 3, wherein at least two moving strips of the plurality of first moving strips and the plurality of second moving strips are formed on the third sub-substrate.

10. Furthermore, it includes a leaf spring disposed on one side of the first moving part, The leaf spring is configured to bias the fourth sub-substrate and the fifth sub-substrate toward the first fixed substrate, The phase conversion device according to claim 4, wherein at least two moving strips of the plurality of first moving strips and the plurality of second moving strips are formed on the fourth sub-substrate and the fifth sub-substrate.

11. The second moving substrate is a plurality of third moving strips arranged to be aligned along the second direction and a plurality of fourth moving strips arranged to be aligned along the second direction, The phase conversion device according to any one of claims 1 to 4, wherein the plurality of third moving strips and the plurality of fourth moving strips are arranged to be aligned along the first direction.

12. The second moving substrate, each of the plurality of third moving strips has a convex shape toward an adjacent fourth moving strip, The phase conversion device according to claim 11, wherein each of the plurality of fourth moving strips has a convex shape toward an adjacent third moving strip.

13. The phase conversion device according to claim 12, wherein the second moving substrate does not include other moving strips other than the plurality of third moving strips and the plurality of fourth moving strips.

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